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2007-08-24 Joseph Myers <joseph@codesourcery.com>
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
84f5d08e 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
cd123cb7 24
4ce794b7
AM		 25/* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
5bd4f169 31#include "bfd.h"
5bd4f169
AM		 32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
04c9666a 35#include "elf/ppc64.h"
5d1634d7 36#include "elf64-ppc.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 56static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 58
ad8e1ba5
AM		 59#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60#define TARGET_LITTLE_NAME "elf64-powerpcle"
61#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
64#define ELF_MACHINE_CODE EM_PPC64
65#define ELF_MAXPAGESIZE 0x10000
24718e3b 66#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM		 67#define elf_info_to_howto ppc64_elf_info_to_howto
68
69#define elf_backend_want_got_sym 0
70#define elf_backend_want_plt_sym 0
71#define elf_backend_plt_alignment 3
72#define elf_backend_plt_not_loaded 1
ad8e1ba5 73#define elf_backend_got_header_size 8
ad8e1ba5
AM		 74#define elf_backend_can_gc_sections 1
75#define elf_backend_can_refcount 1
76#define elf_backend_rela_normal 1
6bfdb61b 77#define elf_backend_default_execstack 0
ad8e1ba5 78
e717da7e 79#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 80#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
157090f7 81#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM		 82#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 86#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 87
88#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 89#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 91#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 92#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 94#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d 95#define elf_backend_check_directives ppc64_elf_check_directives
97fed1c9 96#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 97#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 98#define elf_backend_check_relocs ppc64_elf_check_relocs
64d03ab5 99#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 100#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
101#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
102#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
103#define elf_backend_hide_symbol ppc64_elf_hide_symbol
104#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
105#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 106#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 107#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 108#define elf_backend_relocate_section ppc64_elf_relocate_section
109#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
110#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
111#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 112#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 113#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 114
5bd4f169
AM		 115/* The name of the dynamic interpreter. This is put in the .interp
116 section. */
117#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
118
119/* The size in bytes of an entry in the procedure linkage table. */
120#define PLT_ENTRY_SIZE 24
121
122/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 123#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 124
125/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 126#define TOC_BASE_OFF 0x8000
127
128/* Offset of tp and dtp pointers from start of TLS block. */
129#define TP_OFFSET 0x7000
130#define DTP_OFFSET 0x8000
5bd4f169 131
ad8e1ba5
AM		 132/* .plt call stub instructions. The normal stub is like this, but
133 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 134 insert an addi to adjust r12. */
ad8e1ba5 135#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 136#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
137#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
138#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 139#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 140#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
AM		 141 /* ld %r11,xxx+16@l(%r12) */
142#define BCTR 0x4e800420 /* bctr */
143
5d1634d7 144
ee4bf8d2 145#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 146#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
ad8e1ba5
AM		 147#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
148#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
149
ac2df442
AM		 150#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
151#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
152
ad8e1ba5
AM		 153#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
154
ee4bf8d2 155/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 156#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 157 /* 0: */
158 /* .quad plt0-1f */
159 /* __glink: */
160#define MFLR_R12 0x7d8802a6 /* mflr %12 */
161#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
162 /* 1: */
163#define MFLR_R11 0x7d6802a6 /* mflr %11 */
164#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
165#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
166#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
167 /* ld %11,0(%12) */
168 /* ld %2,8(%12) */
169 /* mtctr %11 */
170 /* ld %11,16(%12) */
171 /* bctr */
5d1634d7
AM		 172
173/* Pad with this. */
174#define NOP 0x60000000
175
721956f4
AM		 176/* Some other nops. */
177#define CROR_151515 0x4def7b82
178#define CROR_313131 0x4ffffb82
179
cedb70c5 180/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 181#define LI_R0_0 0x38000000 /* li %r0,0 */
182#define B_DOT 0x48000000 /* b . */
183
184/* After that, we need two instructions to load the index, followed by
185 a branch. */
186#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 187#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 188
deb0e272
AM		 189/* Instructions used by the save and restore reg functions. */
190#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
191#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
192#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
193#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 194#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
195#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 196#define LI_R12_0 0x39800000 /* li %r12,0 */
197#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
198#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
199#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 200#define BLR 0x4e800020 /* blr */
201
41bd81ab
AM		 202/* Since .opd is an array of descriptors and each entry will end up
203 with identical R_PPC64_RELATIVE relocs, there is really no need to
204 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 205 relocate .opd without reloc entries. */
41bd81ab
AM		 206#ifndef NO_OPD_RELOCS
207#define NO_OPD_RELOCS 0
208#endif
5bd4f169 209\f
f5e87a1d 210#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 211
5bd4f169 212/* Relocation HOWTO's. */
04c9666a 213static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 214
215static reloc_howto_type ppc64_elf_howto_raw[] = {
216 /* This reloc does nothing. */
217 HOWTO (R_PPC64_NONE, /* type */
218 0, /* rightshift */
411e1bfb
AM		 219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 32, /* bitsize */
b34976b6 221 FALSE, /* pc_relative */
5bd4f169 222 0, /* bitpos */
f5e87a1d 223 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC64_NONE", /* name */
b34976b6 226 FALSE, /* partial_inplace */
d006db6c 227 0, /* src_mask */
5bd4f169 228 0, /* dst_mask */
b34976b6 229 FALSE), /* pcrel_offset */
5bd4f169
AM		 230
231 /* A standard 32 bit relocation. */
232 HOWTO (R_PPC64_ADDR32, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 32, /* bitsize */
b34976b6 236 FALSE, /* pc_relative */
5bd4f169
AM		 237 0, /* bitpos */
238 complain_overflow_bitfield, /* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC64_ADDR32", /* name */
b34976b6 241 FALSE, /* partial_inplace */
5bd4f169
AM		 242 0, /* src_mask */
243 0xffffffff, /* dst_mask */
b34976b6 244 FALSE), /* pcrel_offset */
5bd4f169
AM		 245
246 /* An absolute 26 bit branch; the lower two bits must be zero.
247 FIXME: we don't check that, we just clear them. */
248 HOWTO (R_PPC64_ADDR24, /* type */
249 0, /* rightshift */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
251 26, /* bitsize */
b34976b6 252 FALSE, /* pc_relative */
5bd4f169
AM		 253 0, /* bitpos */
254 complain_overflow_bitfield, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC64_ADDR24", /* name */
b34976b6 257 FALSE, /* partial_inplace */
d006db6c 258 0, /* src_mask */
f5e87a1d 259 0x03fffffc, /* dst_mask */
b34976b6 260 FALSE), /* pcrel_offset */
5bd4f169
AM		 261
262 /* A standard 16 bit relocation. */
263 HOWTO (R_PPC64_ADDR16, /* type */
264 0, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
5bd4f169
AM		 268 0, /* bitpos */
269 complain_overflow_bitfield, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC64_ADDR16", /* name */
b34976b6 272 FALSE, /* partial_inplace */
5bd4f169
AM		 273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
5bd4f169
AM		 276
277 /* A 16 bit relocation without overflow. */
278 HOWTO (R_PPC64_ADDR16_LO, /* type */
279 0, /* rightshift */
280 1, /* size (0 = byte, 1 = short, 2 = long) */
281 16, /* bitsize */
b34976b6 282 FALSE, /* pc_relative */
5bd4f169
AM		 283 0, /* bitpos */
284 complain_overflow_dont,/* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_PPC64_ADDR16_LO", /* name */
b34976b6 287 FALSE, /* partial_inplace */
5bd4f169
AM		 288 0, /* src_mask */
289 0xffff, /* dst_mask */
b34976b6 290 FALSE), /* pcrel_offset */
5bd4f169
AM		 291
292 /* Bits 16-31 of an address. */
293 HOWTO (R_PPC64_ADDR16_HI, /* type */
294 16, /* rightshift */
295 1, /* size (0 = byte, 1 = short, 2 = long) */
296 16, /* bitsize */
b34976b6 297 FALSE, /* pc_relative */
5bd4f169
AM		 298 0, /* bitpos */
299 complain_overflow_dont, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_PPC64_ADDR16_HI", /* name */
b34976b6 302 FALSE, /* partial_inplace */
5bd4f169
AM		 303 0, /* src_mask */
304 0xffff, /* dst_mask */
b34976b6 305 FALSE), /* pcrel_offset */
5bd4f169
AM		 306
307 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
308 bits, treated as a signed number, is negative. */
309 HOWTO (R_PPC64_ADDR16_HA, /* type */
310 16, /* rightshift */
311 1, /* size (0 = byte, 1 = short, 2 = long) */
312 16, /* bitsize */
b34976b6 313 FALSE, /* pc_relative */
5bd4f169
AM		 314 0, /* bitpos */
315 complain_overflow_dont, /* complain_on_overflow */
805fc799 316 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 317 "R_PPC64_ADDR16_HA", /* name */
b34976b6 318 FALSE, /* partial_inplace */
5bd4f169
AM		 319 0, /* src_mask */
320 0xffff, /* dst_mask */
b34976b6 321 FALSE), /* pcrel_offset */
5bd4f169
AM		 322
323 /* An absolute 16 bit branch; the lower two bits must be zero.
324 FIXME: we don't check that, we just clear them. */
325 HOWTO (R_PPC64_ADDR14, /* type */
326 0, /* rightshift */
327 2, /* size (0 = byte, 1 = short, 2 = long) */
328 16, /* bitsize */
b34976b6 329 FALSE, /* pc_relative */
5bd4f169
AM		 330 0, /* bitpos */
331 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 332 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 333 "R_PPC64_ADDR14", /* name */
b34976b6 334 FALSE, /* partial_inplace */
d006db6c 335 0, /* src_mask */
f5e87a1d 336 0x0000fffc, /* dst_mask */
b34976b6 337 FALSE), /* pcrel_offset */
5bd4f169
AM		 338
339 /* An absolute 16 bit branch, for which bit 10 should be set to
340 indicate that the branch is expected to be taken. The lower two
341 bits must be zero. */
342 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
343 0, /* rightshift */
344 2, /* size (0 = byte, 1 = short, 2 = long) */
345 16, /* bitsize */
b34976b6 346 FALSE, /* pc_relative */
5bd4f169
AM		 347 0, /* bitpos */
348 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 349 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 350 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 351 FALSE, /* partial_inplace */
d006db6c 352 0, /* src_mask */
f5e87a1d 353 0x0000fffc, /* dst_mask */
b34976b6 354 FALSE), /* pcrel_offset */
5bd4f169
AM		 355
356 /* An absolute 16 bit branch, for which bit 10 should be set to
357 indicate that the branch is not expected to be taken. The lower
358 two bits must be zero. */
359 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
b34976b6 363 FALSE, /* pc_relative */
5bd4f169
AM		 364 0, /* bitpos */
365 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 366 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 367 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 368 FALSE, /* partial_inplace */
d006db6c 369 0, /* src_mask */
f5e87a1d 370 0x0000fffc, /* dst_mask */
b34976b6 371 FALSE), /* pcrel_offset */
5bd4f169
AM		 372
373 /* A relative 26 bit branch; the lower two bits must be zero. */
374 HOWTO (R_PPC64_REL24, /* type */
375 0, /* rightshift */
376 2, /* size (0 = byte, 1 = short, 2 = long) */
377 26, /* bitsize */
b34976b6 378 TRUE, /* pc_relative */
5bd4f169
AM		 379 0, /* bitpos */
380 complain_overflow_signed, /* complain_on_overflow */
2441e016 381 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 382 "R_PPC64_REL24", /* name */
b34976b6 383 FALSE, /* partial_inplace */
d006db6c 384 0, /* src_mask */
f5e87a1d 385 0x03fffffc, /* dst_mask */
b34976b6 386 TRUE), /* pcrel_offset */
5bd4f169
AM		 387
388 /* A relative 16 bit branch; the lower two bits must be zero. */
389 HOWTO (R_PPC64_REL14, /* type */
390 0, /* rightshift */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
392 16, /* bitsize */
b34976b6 393 TRUE, /* pc_relative */
5bd4f169
AM		 394 0, /* bitpos */
395 complain_overflow_signed, /* complain_on_overflow */
2441e016 396 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 397 "R_PPC64_REL14", /* name */
b34976b6 398 FALSE, /* partial_inplace */
d006db6c 399 0, /* src_mask */
f5e87a1d 400 0x0000fffc, /* dst_mask */
b34976b6 401 TRUE), /* pcrel_offset */
5bd4f169
AM		 402
403 /* A relative 16 bit branch. Bit 10 should be set to indicate that
404 the branch is expected to be taken. The lower two bits must be
405 zero. */
406 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
407 0, /* rightshift */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
409 16, /* bitsize */
b34976b6 410 TRUE, /* pc_relative */
5bd4f169
AM		 411 0, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
805fc799 413 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 414 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 415 FALSE, /* partial_inplace */
d006db6c 416 0, /* src_mask */
f5e87a1d 417 0x0000fffc, /* dst_mask */
b34976b6 418 TRUE), /* pcrel_offset */
5bd4f169
AM		 419
420 /* A relative 16 bit branch. Bit 10 should be set to indicate that
421 the branch is not expected to be taken. The lower two bits must
422 be zero. */
423 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
424 0, /* rightshift */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
426 16, /* bitsize */
b34976b6 427 TRUE, /* pc_relative */
5bd4f169
AM		 428 0, /* bitpos */
429 complain_overflow_signed, /* complain_on_overflow */
805fc799 430 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 431 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 432 FALSE, /* partial_inplace */
d006db6c 433 0, /* src_mask */
f5e87a1d 434 0x0000fffc, /* dst_mask */
b34976b6 435 TRUE), /* pcrel_offset */
5bd4f169
AM		 436
437 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
438 symbol. */
439 HOWTO (R_PPC64_GOT16, /* type */
440 0, /* rightshift */
441 1, /* size (0 = byte, 1 = short, 2 = long) */
442 16, /* bitsize */
b34976b6 443 FALSE, /* pc_relative */
5bd4f169
AM		 444 0, /* bitpos */
445 complain_overflow_signed, /* complain_on_overflow */
805fc799 446 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 447 "R_PPC64_GOT16", /* name */
b34976b6 448 FALSE, /* partial_inplace */
5bd4f169
AM		 449 0, /* src_mask */
450 0xffff, /* dst_mask */
b34976b6 451 FALSE), /* pcrel_offset */
5bd4f169
AM		 452
453 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
454 the symbol. */
455 HOWTO (R_PPC64_GOT16_LO, /* type */
456 0, /* rightshift */
457 1, /* size (0 = byte, 1 = short, 2 = long) */
458 16, /* bitsize */
b34976b6 459 FALSE, /* pc_relative */
5bd4f169
AM		 460 0, /* bitpos */
461 complain_overflow_dont, /* complain_on_overflow */
805fc799 462 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 463 "R_PPC64_GOT16_LO", /* name */
b34976b6 464 FALSE, /* partial_inplace */
5bd4f169
AM		 465 0, /* src_mask */
466 0xffff, /* dst_mask */
b34976b6 467 FALSE), /* pcrel_offset */
5bd4f169
AM		 468
469 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
470 the symbol. */
471 HOWTO (R_PPC64_GOT16_HI, /* type */
472 16, /* rightshift */
473 1, /* size (0 = byte, 1 = short, 2 = long) */
474 16, /* bitsize */
b34976b6 475 FALSE, /* pc_relative */
5bd4f169
AM		 476 0, /* bitpos */
477 complain_overflow_dont,/* complain_on_overflow */
805fc799 478 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 479 "R_PPC64_GOT16_HI", /* name */
b34976b6 480 FALSE, /* partial_inplace */
5bd4f169
AM		 481 0, /* src_mask */
482 0xffff, /* dst_mask */
b34976b6 483 FALSE), /* pcrel_offset */
5bd4f169
AM		 484
485 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
486 the symbol. */
487 HOWTO (R_PPC64_GOT16_HA, /* type */
488 16, /* rightshift */
489 1, /* size (0 = byte, 1 = short, 2 = long) */
490 16, /* bitsize */
b34976b6 491 FALSE, /* pc_relative */
5bd4f169
AM		 492 0, /* bitpos */
493 complain_overflow_dont,/* complain_on_overflow */
805fc799 494 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 495 "R_PPC64_GOT16_HA", /* name */
b34976b6 496 FALSE, /* partial_inplace */
5bd4f169
AM		 497 0, /* src_mask */
498 0xffff, /* dst_mask */
b34976b6 499 FALSE), /* pcrel_offset */
5bd4f169
AM		 500
501 /* This is used only by the dynamic linker. The symbol should exist
502 both in the object being run and in some shared library. The
503 dynamic linker copies the data addressed by the symbol from the
504 shared library into the object, because the object being
505 run has to have the data at some particular address. */
506 HOWTO (R_PPC64_COPY, /* type */
507 0, /* rightshift */
f5e87a1d
AM		 508 0, /* this one is variable size */
509 0, /* bitsize */
b34976b6 510 FALSE, /* pc_relative */
5bd4f169 511 0, /* bitpos */
f5e87a1d
AM		 512 complain_overflow_dont, /* complain_on_overflow */
513 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 514 "R_PPC64_COPY", /* name */
b34976b6 515 FALSE, /* partial_inplace */
5bd4f169
AM		 516 0, /* src_mask */
517 0, /* dst_mask */
b34976b6 518 FALSE), /* pcrel_offset */
5bd4f169
AM		 519
520 /* Like R_PPC64_ADDR64, but used when setting global offset table
521 entries. */
522 HOWTO (R_PPC64_GLOB_DAT, /* type */
523 0, /* rightshift */
524 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
525 64, /* bitsize */
b34976b6 526 FALSE, /* pc_relative */
5bd4f169
AM		 527 0, /* bitpos */
528 complain_overflow_dont, /* complain_on_overflow */
805fc799 529 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 530 "R_PPC64_GLOB_DAT", /* name */
b34976b6 531 FALSE, /* partial_inplace */
5bd4f169 532 0, /* src_mask */
f5e87a1d 533 ONES (64), /* dst_mask */
b34976b6 534 FALSE), /* pcrel_offset */
5bd4f169
AM		 535
536 /* Created by the link editor. Marks a procedure linkage table
537 entry for a symbol. */
538 HOWTO (R_PPC64_JMP_SLOT, /* type */
539 0, /* rightshift */
540 0, /* size (0 = byte, 1 = short, 2 = long) */
541 0, /* bitsize */
b34976b6 542 FALSE, /* pc_relative */
5bd4f169
AM		 543 0, /* bitpos */
544 complain_overflow_dont, /* complain_on_overflow */
805fc799 545 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 546 "R_PPC64_JMP_SLOT", /* name */
b34976b6 547 FALSE, /* partial_inplace */
5bd4f169
AM		 548 0, /* src_mask */
549 0, /* dst_mask */
b34976b6 550 FALSE), /* pcrel_offset */
5bd4f169
AM		 551
552 /* Used only by the dynamic linker. When the object is run, this
553 doubleword64 is set to the load address of the object, plus the
554 addend. */
555 HOWTO (R_PPC64_RELATIVE, /* type */
556 0, /* rightshift */
557 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
558 64, /* bitsize */
b34976b6 559 FALSE, /* pc_relative */
5bd4f169
AM		 560 0, /* bitpos */
561 complain_overflow_dont, /* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_PPC64_RELATIVE", /* name */
b34976b6 564 FALSE, /* partial_inplace */
5bd4f169 565 0, /* src_mask */
f5e87a1d 566 ONES (64), /* dst_mask */
b34976b6 567 FALSE), /* pcrel_offset */
5bd4f169
AM		 568
569 /* Like R_PPC64_ADDR32, but may be unaligned. */
570 HOWTO (R_PPC64_UADDR32, /* type */
571 0, /* rightshift */
572 2, /* size (0 = byte, 1 = short, 2 = long) */
573 32, /* bitsize */
b34976b6 574 FALSE, /* pc_relative */
5bd4f169
AM		 575 0, /* bitpos */
576 complain_overflow_bitfield, /* complain_on_overflow */
577 bfd_elf_generic_reloc, /* special_function */
578 "R_PPC64_UADDR32", /* name */
b34976b6 579 FALSE, /* partial_inplace */
5bd4f169
AM		 580 0, /* src_mask */
581 0xffffffff, /* dst_mask */
b34976b6 582 FALSE), /* pcrel_offset */
5bd4f169
AM		 583
584 /* Like R_PPC64_ADDR16, but may be unaligned. */
585 HOWTO (R_PPC64_UADDR16, /* type */
586 0, /* rightshift */
587 1, /* size (0 = byte, 1 = short, 2 = long) */
588 16, /* bitsize */
b34976b6 589 FALSE, /* pc_relative */
5bd4f169
AM		 590 0, /* bitpos */
591 complain_overflow_bitfield, /* complain_on_overflow */
592 bfd_elf_generic_reloc, /* special_function */
593 "R_PPC64_UADDR16", /* name */
b34976b6 594 FALSE, /* partial_inplace */
5bd4f169
AM		 595 0, /* src_mask */
596 0xffff, /* dst_mask */
b34976b6 597 FALSE), /* pcrel_offset */
5bd4f169
AM		 598
599 /* 32-bit PC relative. */
600 HOWTO (R_PPC64_REL32, /* type */
601 0, /* rightshift */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
603 32, /* bitsize */
b34976b6 604 TRUE, /* pc_relative */
5bd4f169 605 0, /* bitpos */
cedb70c5 606 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 607 complain_overflow_signed, /* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_PPC64_REL32", /* name */
b34976b6 610 FALSE, /* partial_inplace */
5bd4f169
AM		 611 0, /* src_mask */
612 0xffffffff, /* dst_mask */
b34976b6 613 TRUE), /* pcrel_offset */
5bd4f169 614
10ed1bba 615 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 616 HOWTO (R_PPC64_PLT32, /* type */
617 0, /* rightshift */
618 2, /* size (0 = byte, 1 = short, 2 = long) */
619 32, /* bitsize */
b34976b6 620 FALSE, /* pc_relative */
5bd4f169
AM		 621 0, /* bitpos */
622 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 623 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 624 "R_PPC64_PLT32", /* name */
b34976b6 625 FALSE, /* partial_inplace */
5bd4f169 626 0, /* src_mask */
f5e87a1d 627 0xffffffff, /* dst_mask */
b34976b6 628 FALSE), /* pcrel_offset */
5bd4f169
AM		 629
630 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
631 FIXME: R_PPC64_PLTREL32 not supported. */
632 HOWTO (R_PPC64_PLTREL32, /* type */
633 0, /* rightshift */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
635 32, /* bitsize */
b34976b6 636 TRUE, /* pc_relative */
5bd4f169
AM		 637 0, /* bitpos */
638 complain_overflow_signed, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC64_PLTREL32", /* name */
b34976b6 641 FALSE, /* partial_inplace */
5bd4f169 642 0, /* src_mask */
f5e87a1d 643 0xffffffff, /* dst_mask */
b34976b6 644 TRUE), /* pcrel_offset */
5bd4f169
AM		 645
646 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
647 the symbol. */
648 HOWTO (R_PPC64_PLT16_LO, /* type */
649 0, /* rightshift */
650 1, /* size (0 = byte, 1 = short, 2 = long) */
651 16, /* bitsize */
b34976b6 652 FALSE, /* pc_relative */
5bd4f169
AM		 653 0, /* bitpos */
654 complain_overflow_dont, /* complain_on_overflow */
805fc799 655 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 656 "R_PPC64_PLT16_LO", /* name */
b34976b6 657 FALSE, /* partial_inplace */
5bd4f169
AM		 658 0, /* src_mask */
659 0xffff, /* dst_mask */
b34976b6 660 FALSE), /* pcrel_offset */
5bd4f169
AM		 661
662 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
663 the symbol. */
664 HOWTO (R_PPC64_PLT16_HI, /* type */
665 16, /* rightshift */
666 1, /* size (0 = byte, 1 = short, 2 = long) */
667 16, /* bitsize */
b34976b6 668 FALSE, /* pc_relative */
5bd4f169
AM		 669 0, /* bitpos */
670 complain_overflow_dont, /* complain_on_overflow */
805fc799 671 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 672 "R_PPC64_PLT16_HI", /* name */
b34976b6 673 FALSE, /* partial_inplace */
5bd4f169
AM		 674 0, /* src_mask */
675 0xffff, /* dst_mask */
b34976b6 676 FALSE), /* pcrel_offset */
5bd4f169
AM		 677
678 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
679 the symbol. */
680 HOWTO (R_PPC64_PLT16_HA, /* type */
681 16, /* rightshift */
682 1, /* size (0 = byte, 1 = short, 2 = long) */
683 16, /* bitsize */
b34976b6 684 FALSE, /* pc_relative */
5bd4f169
AM		 685 0, /* bitpos */
686 complain_overflow_dont, /* complain_on_overflow */
805fc799 687 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 688 "R_PPC64_PLT16_HA", /* name */
b34976b6 689 FALSE, /* partial_inplace */
5bd4f169
AM		 690 0, /* src_mask */
691 0xffff, /* dst_mask */
b34976b6 692 FALSE), /* pcrel_offset */
5bd4f169 693
c061c2d8 694 /* 16-bit section relative relocation. */
5bd4f169
AM		 695 HOWTO (R_PPC64_SECTOFF, /* type */
696 0, /* rightshift */
c061c2d8
AM		 697 1, /* size (0 = byte, 1 = short, 2 = long) */
698 16, /* bitsize */
b34976b6 699 FALSE, /* pc_relative */
5bd4f169
AM		 700 0, /* bitpos */
701 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 702 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 703 "R_PPC64_SECTOFF", /* name */
b34976b6 704 FALSE, /* partial_inplace */
5bd4f169 705 0, /* src_mask */
c061c2d8 706 0xffff, /* dst_mask */
b34976b6 707 FALSE), /* pcrel_offset */
5bd4f169 708
c061c2d8 709 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 710 HOWTO (R_PPC64_SECTOFF_LO, /* type */
711 0, /* rightshift */
712 1, /* size (0 = byte, 1 = short, 2 = long) */
713 16, /* bitsize */
b34976b6 714 FALSE, /* pc_relative */
5bd4f169
AM		 715 0, /* bitpos */
716 complain_overflow_dont, /* complain_on_overflow */
805fc799 717 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 718 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 719 FALSE, /* partial_inplace */
5bd4f169
AM		 720 0, /* src_mask */
721 0xffff, /* dst_mask */
b34976b6 722 FALSE), /* pcrel_offset */
5bd4f169
AM		 723
724 /* 16-bit upper half section relative relocation. */
725 HOWTO (R_PPC64_SECTOFF_HI, /* type */
726 16, /* rightshift */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
728 16, /* bitsize */
b34976b6 729 FALSE, /* pc_relative */
5bd4f169
AM		 730 0, /* bitpos */
731 complain_overflow_dont, /* complain_on_overflow */
805fc799 732 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 733 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 734 FALSE, /* partial_inplace */
5bd4f169
AM		 735 0, /* src_mask */
736 0xffff, /* dst_mask */
b34976b6 737 FALSE), /* pcrel_offset */
5bd4f169
AM		 738
739 /* 16-bit upper half adjusted section relative relocation. */
740 HOWTO (R_PPC64_SECTOFF_HA, /* type */
741 16, /* rightshift */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
743 16, /* bitsize */
b34976b6 744 FALSE, /* pc_relative */
5bd4f169
AM		 745 0, /* bitpos */
746 complain_overflow_dont, /* complain_on_overflow */
805fc799 747 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 748 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 749 FALSE, /* partial_inplace */
5bd4f169
AM		 750 0, /* src_mask */
751 0xffff, /* dst_mask */
b34976b6 752 FALSE), /* pcrel_offset */
5bd4f169 753
04c9666a
AM		 754 /* Like R_PPC64_REL24 without touching the two least significant bits. */
755 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 756 2, /* rightshift */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
758 30, /* bitsize */
b34976b6 759 TRUE, /* pc_relative */
5bd4f169
AM		 760 0, /* bitpos */
761 complain_overflow_dont, /* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
04c9666a 763 "R_PPC64_REL30", /* name */
b34976b6 764 FALSE, /* partial_inplace */
d006db6c 765 0, /* src_mask */
5bd4f169 766 0xfffffffc, /* dst_mask */
b34976b6 767 TRUE), /* pcrel_offset */
5bd4f169
AM		 768
769 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
770
771 /* A standard 64-bit relocation. */
772 HOWTO (R_PPC64_ADDR64, /* type */
773 0, /* rightshift */
774 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
775 64, /* bitsize */
b34976b6 776 FALSE, /* pc_relative */
5bd4f169
AM		 777 0, /* bitpos */
778 complain_overflow_dont, /* complain_on_overflow */
779 bfd_elf_generic_reloc, /* special_function */
780 "R_PPC64_ADDR64", /* name */
b34976b6 781 FALSE, /* partial_inplace */
5bd4f169 782 0, /* src_mask */
f5e87a1d 783 ONES (64), /* dst_mask */
b34976b6 784 FALSE), /* pcrel_offset */
5bd4f169
AM		 785
786 /* The bits 32-47 of an address. */
787 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
788 32, /* rightshift */
789 1, /* size (0 = byte, 1 = short, 2 = long) */
790 16, /* bitsize */
b34976b6 791 FALSE, /* pc_relative */
5bd4f169
AM		 792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 796 FALSE, /* partial_inplace */
5bd4f169
AM		 797 0, /* src_mask */
798 0xffff, /* dst_mask */
b34976b6 799 FALSE), /* pcrel_offset */
5bd4f169
AM		 800
801 /* The bits 32-47 of an address, plus 1 if the contents of the low
802 16 bits, treated as a signed number, is negative. */
803 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
804 32, /* rightshift */
805 1, /* size (0 = byte, 1 = short, 2 = long) */
806 16, /* bitsize */
b34976b6 807 FALSE, /* pc_relative */
5bd4f169
AM		 808 0, /* bitpos */
809 complain_overflow_dont, /* complain_on_overflow */
805fc799 810 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 811 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 812 FALSE, /* partial_inplace */
5bd4f169
AM		 813 0, /* src_mask */
814 0xffff, /* dst_mask */
b34976b6 815 FALSE), /* pcrel_offset */
5bd4f169
AM		 816
817 /* The bits 48-63 of an address. */
818 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
819 48, /* rightshift */
820 1, /* size (0 = byte, 1 = short, 2 = long) */
821 16, /* bitsize */
b34976b6 822 FALSE, /* pc_relative */
5bd4f169
AM		 823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 bfd_elf_generic_reloc, /* special_function */
826 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 827 FALSE, /* partial_inplace */
5bd4f169
AM		 828 0, /* src_mask */
829 0xffff, /* dst_mask */
b34976b6 830 FALSE), /* pcrel_offset */
5bd4f169
AM		 831
832 /* The bits 48-63 of an address, plus 1 if the contents of the low
833 16 bits, treated as a signed number, is negative. */
834 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
835 48, /* rightshift */
836 1, /* size (0 = byte, 1 = short, 2 = long) */
837 16, /* bitsize */
b34976b6 838 FALSE, /* pc_relative */
5bd4f169
AM		 839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
805fc799 841 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 842 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 843 FALSE, /* partial_inplace */
5bd4f169
AM		 844 0, /* src_mask */
845 0xffff, /* dst_mask */
b34976b6 846 FALSE), /* pcrel_offset */
5bd4f169
AM		 847
848 /* Like ADDR64, but may be unaligned. */
849 HOWTO (R_PPC64_UADDR64, /* type */
850 0, /* rightshift */
851 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
852 64, /* bitsize */
b34976b6 853 FALSE, /* pc_relative */
5bd4f169
AM		 854 0, /* bitpos */
855 complain_overflow_dont, /* complain_on_overflow */
856 bfd_elf_generic_reloc, /* special_function */
857 "R_PPC64_UADDR64", /* name */
b34976b6 858 FALSE, /* partial_inplace */
5bd4f169 859 0, /* src_mask */
f5e87a1d 860 ONES (64), /* dst_mask */
b34976b6 861 FALSE), /* pcrel_offset */
5bd4f169
AM		 862
863 /* 64-bit relative relocation. */
864 HOWTO (R_PPC64_REL64, /* type */
865 0, /* rightshift */
866 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
867 64, /* bitsize */
b34976b6 868 TRUE, /* pc_relative */
5bd4f169
AM		 869 0, /* bitpos */
870 complain_overflow_dont, /* complain_on_overflow */
871 bfd_elf_generic_reloc, /* special_function */
872 "R_PPC64_REL64", /* name */
b34976b6 873 FALSE, /* partial_inplace */
5bd4f169 874 0, /* src_mask */
f5e87a1d 875 ONES (64), /* dst_mask */
b34976b6 876 TRUE), /* pcrel_offset */
5bd4f169 877
cedb70c5 878 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 879 HOWTO (R_PPC64_PLT64, /* type */
880 0, /* rightshift */
881 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
882 64, /* bitsize */
b34976b6 883 FALSE, /* pc_relative */
5bd4f169
AM		 884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
805fc799 886 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 887 "R_PPC64_PLT64", /* name */
b34976b6 888 FALSE, /* partial_inplace */
5bd4f169 889 0, /* src_mask */
f5e87a1d 890 ONES (64), /* dst_mask */
b34976b6 891 FALSE), /* pcrel_offset */
5bd4f169
AM		 892
893 /* 64-bit PC relative relocation to the symbol's procedure linkage
894 table. */
895 /* FIXME: R_PPC64_PLTREL64 not supported. */
896 HOWTO (R_PPC64_PLTREL64, /* type */
897 0, /* rightshift */
898 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
899 64, /* bitsize */
b34976b6 900 TRUE, /* pc_relative */
5bd4f169
AM		 901 0, /* bitpos */
902 complain_overflow_dont, /* complain_on_overflow */
805fc799 903 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 904 "R_PPC64_PLTREL64", /* name */
b34976b6 905 FALSE, /* partial_inplace */
5bd4f169 906 0, /* src_mask */
f5e87a1d 907 ONES (64), /* dst_mask */
b34976b6 908 TRUE), /* pcrel_offset */
5bd4f169
AM		 909
910 /* 16 bit TOC-relative relocation. */
911
912 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
913 HOWTO (R_PPC64_TOC16, /* type */
914 0, /* rightshift */
915 1, /* size (0 = byte, 1 = short, 2 = long) */
916 16, /* bitsize */
b34976b6 917 FALSE, /* pc_relative */
5bd4f169
AM		 918 0, /* bitpos */
919 complain_overflow_signed, /* complain_on_overflow */
805fc799 920 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 921 "R_PPC64_TOC16", /* name */
b34976b6 922 FALSE, /* partial_inplace */
5bd4f169
AM		 923 0, /* src_mask */
924 0xffff, /* dst_mask */
b34976b6 925 FALSE), /* pcrel_offset */
5bd4f169
AM		 926
927 /* 16 bit TOC-relative relocation without overflow. */
928
929 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
930 HOWTO (R_PPC64_TOC16_LO, /* type */
931 0, /* rightshift */
932 1, /* size (0 = byte, 1 = short, 2 = long) */
933 16, /* bitsize */
b34976b6 934 FALSE, /* pc_relative */
5bd4f169
AM		 935 0, /* bitpos */
936 complain_overflow_dont, /* complain_on_overflow */
805fc799 937 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 938 "R_PPC64_TOC16_LO", /* name */
b34976b6 939 FALSE, /* partial_inplace */
5bd4f169
AM		 940 0, /* src_mask */
941 0xffff, /* dst_mask */
b34976b6 942 FALSE), /* pcrel_offset */
5bd4f169
AM		 943
944 /* 16 bit TOC-relative relocation, high 16 bits. */
945
946 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
947 HOWTO (R_PPC64_TOC16_HI, /* type */
948 16, /* rightshift */
949 1, /* size (0 = byte, 1 = short, 2 = long) */
950 16, /* bitsize */
b34976b6 951 FALSE, /* pc_relative */
5bd4f169
AM		 952 0, /* bitpos */
953 complain_overflow_dont, /* complain_on_overflow */
805fc799 954 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 955 "R_PPC64_TOC16_HI", /* name */
b34976b6 956 FALSE, /* partial_inplace */
5bd4f169
AM		 957 0, /* src_mask */
958 0xffff, /* dst_mask */
b34976b6 959 FALSE), /* pcrel_offset */
5bd4f169
AM		 960
961 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
962 contents of the low 16 bits, treated as a signed number, is
963 negative. */
964
965 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
966 HOWTO (R_PPC64_TOC16_HA, /* type */
967 16, /* rightshift */
968 1, /* size (0 = byte, 1 = short, 2 = long) */
969 16, /* bitsize */
b34976b6 970 FALSE, /* pc_relative */
5bd4f169
AM		 971 0, /* bitpos */
972 complain_overflow_dont, /* complain_on_overflow */
805fc799 973 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 974 "R_PPC64_TOC16_HA", /* name */
b34976b6 975 FALSE, /* partial_inplace */
5bd4f169
AM		 976 0, /* src_mask */
977 0xffff, /* dst_mask */
b34976b6 978 FALSE), /* pcrel_offset */
5bd4f169
AM		 979
980 /* 64-bit relocation; insert value of TOC base (.TOC.). */
981
982 /* R_PPC64_TOC 51 doubleword64 .TOC. */
983 HOWTO (R_PPC64_TOC, /* type */
984 0, /* rightshift */
985 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
986 64, /* bitsize */
b34976b6 987 FALSE, /* pc_relative */
5bd4f169
AM		 988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 990 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 991 "R_PPC64_TOC", /* name */
b34976b6 992 FALSE, /* partial_inplace */
5bd4f169 993 0, /* src_mask */
f5e87a1d 994 ONES (64), /* dst_mask */
b34976b6 995 FALSE), /* pcrel_offset */
5bd4f169
AM		 996
997 /* Like R_PPC64_GOT16, but also informs the link editor that the
998 value to relocate may (!) refer to a PLT entry which the link
999 editor (a) may replace with the symbol value. If the link editor
1000 is unable to fully resolve the symbol, it may (b) create a PLT
1001 entry and store the address to the new PLT entry in the GOT.
1002 This permits lazy resolution of function symbols at run time.
1003 The link editor may also skip all of this and just (c) emit a
1004 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1005 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1006 HOWTO (R_PPC64_PLTGOT16, /* type */
1007 0, /* rightshift */
1008 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 16, /* bitsize */
b34976b6 1010 FALSE, /* pc_relative */
5bd4f169
AM		 1011 0, /* bitpos */
1012 complain_overflow_signed, /* complain_on_overflow */
805fc799 1013 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1014 "R_PPC64_PLTGOT16", /* name */
1015 FALSE, /* partial_inplace */
1016 0, /* src_mask */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1019
1020 /* Like R_PPC64_PLTGOT16, but without overflow. */
1021 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1022 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1023 0, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1025 16, /* bitsize */
1026 FALSE, /* pc_relative */
1027 0, /* bitpos */
1028 complain_overflow_dont, /* complain_on_overflow */
1029 ppc64_elf_unhandled_reloc, /* special_function */
1030 "R_PPC64_PLTGOT16_LO", /* name */
1031 FALSE, /* partial_inplace */
1032 0, /* src_mask */
1033 0xffff, /* dst_mask */
1034 FALSE), /* pcrel_offset */
1035
1036 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1037 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1038 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 16, /* bitsize */
1042 FALSE, /* pc_relative */
1043 0, /* bitpos */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc64_elf_unhandled_reloc, /* special_function */
1046 "R_PPC64_PLTGOT16_HI", /* name */
1047 FALSE, /* partial_inplace */
1048 0, /* src_mask */
1049 0xffff, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1051
1052 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1053 1 if the contents of the low 16 bits, treated as a signed number,
1054 is negative. */
1055 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1056 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1057 16, /* rightshift */
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1059 16, /* bitsize */
1060 FALSE, /* pc_relative */
1061 0, /* bitpos */
1062 complain_overflow_dont,/* complain_on_overflow */
1063 ppc64_elf_unhandled_reloc, /* special_function */
1064 "R_PPC64_PLTGOT16_HA", /* name */
1065 FALSE, /* partial_inplace */
1066 0, /* src_mask */
1067 0xffff, /* dst_mask */
1068 FALSE), /* pcrel_offset */
1069
1070 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1071 HOWTO (R_PPC64_ADDR16_DS, /* type */
1072 0, /* rightshift */
1073 1, /* size (0 = byte, 1 = short, 2 = long) */
1074 16, /* bitsize */
1075 FALSE, /* pc_relative */
1076 0, /* bitpos */
1077 complain_overflow_bitfield, /* complain_on_overflow */
1078 bfd_elf_generic_reloc, /* special_function */
1079 "R_PPC64_ADDR16_DS", /* name */
1080 FALSE, /* partial_inplace */
1081 0, /* src_mask */
1082 0xfffc, /* dst_mask */
1083 FALSE), /* pcrel_offset */
1084
1085 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1086 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1087 0, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1089 16, /* bitsize */
1090 FALSE, /* pc_relative */
1091 0, /* bitpos */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_PPC64_ADDR16_LO_DS",/* name */
1095 FALSE, /* partial_inplace */
1096 0, /* src_mask */
1097 0xfffc, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1099
1100 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1101 HOWTO (R_PPC64_GOT16_DS, /* type */
1102 0, /* rightshift */
1103 1, /* size (0 = byte, 1 = short, 2 = long) */
1104 16, /* bitsize */
1105 FALSE, /* pc_relative */
1106 0, /* bitpos */
1107 complain_overflow_signed, /* complain_on_overflow */
1108 ppc64_elf_unhandled_reloc, /* special_function */
1109 "R_PPC64_GOT16_DS", /* name */
1110 FALSE, /* partial_inplace */
1111 0, /* src_mask */
1112 0xfffc, /* dst_mask */
1113 FALSE), /* pcrel_offset */
1114
1115 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1116 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1117 0, /* rightshift */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1119 16, /* bitsize */
1120 FALSE, /* pc_relative */
1121 0, /* bitpos */
1122 complain_overflow_dont, /* complain_on_overflow */
1123 ppc64_elf_unhandled_reloc, /* special_function */
1124 "R_PPC64_GOT16_LO_DS", /* name */
1125 FALSE, /* partial_inplace */
1126 0, /* src_mask */
1127 0xfffc, /* dst_mask */
1128 FALSE), /* pcrel_offset */
1129
1130 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1131 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1132 0, /* rightshift */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1134 16, /* bitsize */
1135 FALSE, /* pc_relative */
1136 0, /* bitpos */
1137 complain_overflow_dont, /* complain_on_overflow */
1138 ppc64_elf_unhandled_reloc, /* special_function */
1139 "R_PPC64_PLT16_LO_DS", /* name */
1140 FALSE, /* partial_inplace */
1141 0, /* src_mask */
1142 0xfffc, /* dst_mask */
1143 FALSE), /* pcrel_offset */
1144
1145 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1146 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1147 0, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1149 16, /* bitsize */
1150 FALSE, /* pc_relative */
1151 0, /* bitpos */
1152 complain_overflow_bitfield, /* complain_on_overflow */
1153 ppc64_elf_sectoff_reloc, /* special_function */
1154 "R_PPC64_SECTOFF_DS", /* name */
1155 FALSE, /* partial_inplace */
1156 0, /* src_mask */
1157 0xfffc, /* dst_mask */
1158 FALSE), /* pcrel_offset */
1159
1160 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1161 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1162 0, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1164 16, /* bitsize */
1165 FALSE, /* pc_relative */
1166 0, /* bitpos */
1167 complain_overflow_dont, /* complain_on_overflow */
1168 ppc64_elf_sectoff_reloc, /* special_function */
1169 "R_PPC64_SECTOFF_LO_DS",/* name */
1170 FALSE, /* partial_inplace */
1171 0, /* src_mask */
1172 0xfffc, /* dst_mask */
1173 FALSE), /* pcrel_offset */
1174
1175 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1176 HOWTO (R_PPC64_TOC16_DS, /* type */
1177 0, /* rightshift */
1178 1, /* size (0 = byte, 1 = short, 2 = long) */
1179 16, /* bitsize */
1180 FALSE, /* pc_relative */
1181 0, /* bitpos */
1182 complain_overflow_signed, /* complain_on_overflow */
1183 ppc64_elf_toc_reloc, /* special_function */
1184 "R_PPC64_TOC16_DS", /* name */
1185 FALSE, /* partial_inplace */
1186 0, /* src_mask */
1187 0xfffc, /* dst_mask */
1188 FALSE), /* pcrel_offset */
1189
1190 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1191 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1192 0, /* rightshift */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 16, /* bitsize */
1195 FALSE, /* pc_relative */
1196 0, /* bitpos */
1197 complain_overflow_dont, /* complain_on_overflow */
1198 ppc64_elf_toc_reloc, /* special_function */
1199 "R_PPC64_TOC16_LO_DS", /* name */
1200 FALSE, /* partial_inplace */
1201 0, /* src_mask */
1202 0xfffc, /* dst_mask */
1203 FALSE), /* pcrel_offset */
1204
1205 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1206 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1207 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1208 0, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 16, /* bitsize */
1211 FALSE, /* pc_relative */
1212 0, /* bitpos */
1213 complain_overflow_signed, /* complain_on_overflow */
1214 ppc64_elf_unhandled_reloc, /* special_function */
1215 "R_PPC64_PLTGOT16_DS", /* name */
1216 FALSE, /* partial_inplace */
1217 0, /* src_mask */
1218 0xfffc, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1220
1221 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1222 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1223 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1224 0, /* rightshift */
1225 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 16, /* bitsize */
1227 FALSE, /* pc_relative */
1228 0, /* bitpos */
1229 complain_overflow_dont, /* complain_on_overflow */
1230 ppc64_elf_unhandled_reloc, /* special_function */
1231 "R_PPC64_PLTGOT16_LO_DS",/* name */
1232 FALSE, /* partial_inplace */
1233 0, /* src_mask */
1234 0xfffc, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1236
1237 /* Marker reloc for TLS. */
1238 HOWTO (R_PPC64_TLS,
1239 0, /* rightshift */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 32, /* bitsize */
1242 FALSE, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 "R_PPC64_TLS", /* name */
1247 FALSE, /* partial_inplace */
1248 0, /* src_mask */
1249 0, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* Computes the load module index of the load module that contains the
1253 definition of its TLS sym. */
1254 HOWTO (R_PPC64_DTPMOD64,
1255 0, /* rightshift */
1256 4, /* size (0 = byte, 1 = short, 2 = long) */
1257 64, /* bitsize */
1258 FALSE, /* pc_relative */
1259 0, /* bitpos */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 ppc64_elf_unhandled_reloc, /* special_function */
1262 "R_PPC64_DTPMOD64", /* name */
1263 FALSE, /* partial_inplace */
1264 0, /* src_mask */
1265 ONES (64), /* dst_mask */
1266 FALSE), /* pcrel_offset */
1267
1268 /* Computes a dtv-relative displacement, the difference between the value
1269 of sym+add and the base address of the thread-local storage block that
1270 contains the definition of sym, minus 0x8000. */
1271 HOWTO (R_PPC64_DTPREL64,
1272 0, /* rightshift */
1273 4, /* size (0 = byte, 1 = short, 2 = long) */
1274 64, /* bitsize */
1275 FALSE, /* pc_relative */
1276 0, /* bitpos */
1277 complain_overflow_dont, /* complain_on_overflow */
1278 ppc64_elf_unhandled_reloc, /* special_function */
1279 "R_PPC64_DTPREL64", /* name */
1280 FALSE, /* partial_inplace */
1281 0, /* src_mask */
1282 ONES (64), /* dst_mask */
1283 FALSE), /* pcrel_offset */
1284
1285 /* A 16 bit dtprel reloc. */
1286 HOWTO (R_PPC64_DTPREL16,
1287 0, /* rightshift */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1289 16, /* bitsize */
1290 FALSE, /* pc_relative */
1291 0, /* bitpos */
1292 complain_overflow_signed, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc, /* special_function */
1294 "R_PPC64_DTPREL16", /* name */
1295 FALSE, /* partial_inplace */
1296 0, /* src_mask */
1297 0xffff, /* dst_mask */
1298 FALSE), /* pcrel_offset */
1299
1300 /* Like DTPREL16, but no overflow. */
1301 HOWTO (R_PPC64_DTPREL16_LO,
1302 0, /* rightshift */
1303 1, /* size (0 = byte, 1 = short, 2 = long) */
1304 16, /* bitsize */
1305 FALSE, /* pc_relative */
1306 0, /* bitpos */
1307 complain_overflow_dont, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc, /* special_function */
1309 "R_PPC64_DTPREL16_LO", /* name */
1310 FALSE, /* partial_inplace */
1311 0, /* src_mask */
1312 0xffff, /* dst_mask */
1313 FALSE), /* pcrel_offset */
1314
1315 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1316 HOWTO (R_PPC64_DTPREL16_HI,
1317 16, /* rightshift */
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1319 16, /* bitsize */
1320 FALSE, /* pc_relative */
1321 0, /* bitpos */
1322 complain_overflow_dont, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc, /* special_function */
1324 "R_PPC64_DTPREL16_HI", /* name */
1325 FALSE, /* partial_inplace */
1326 0, /* src_mask */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1329
1330 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1331 HOWTO (R_PPC64_DTPREL16_HA,
1332 16, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc, /* special_function */
1339 "R_PPC64_DTPREL16_HA", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HIGHER,
1347 32, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_dont, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc, /* special_function */
1354 "R_PPC64_DTPREL16_HIGHER", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1362 32, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1364 16, /* bitsize */
1365 FALSE, /* pc_relative */
1366 0, /* bitpos */
1367 complain_overflow_dont, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc, /* special_function */
1369 "R_PPC64_DTPREL16_HIGHERA", /* name */
1370 FALSE, /* partial_inplace */
1371 0, /* src_mask */
1372 0xffff, /* dst_mask */
1373 FALSE), /* pcrel_offset */
1374
1375 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1377 48, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1379 16, /* bitsize */
1380 FALSE, /* pc_relative */
1381 0, /* bitpos */
1382 complain_overflow_dont, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHEST", /* name */
1385 FALSE, /* partial_inplace */
1386 0, /* src_mask */
1387 0xffff, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1389
1390 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1392 48, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 16, /* bitsize */
1395 FALSE, /* pc_relative */
1396 0, /* bitpos */
1397 complain_overflow_dont, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1400 FALSE, /* partial_inplace */
1401 0, /* src_mask */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1404
1405 /* Like DTPREL16, but for insns with a DS field. */
1406 HOWTO (R_PPC64_DTPREL16_DS,
1407 0, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 16, /* bitsize */
1410 FALSE, /* pc_relative */
1411 0, /* bitpos */
1412 complain_overflow_signed, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc, /* special_function */
1414 "R_PPC64_DTPREL16_DS", /* name */
1415 FALSE, /* partial_inplace */
1416 0, /* src_mask */
1417 0xfffc, /* dst_mask */
1418 FALSE), /* pcrel_offset */
1419
1420 /* Like DTPREL16_DS, but no overflow. */
1421 HOWTO (R_PPC64_DTPREL16_LO_DS,
1422 0, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1424 16, /* bitsize */
1425 FALSE, /* pc_relative */
1426 0, /* bitpos */
1427 complain_overflow_dont, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc, /* special_function */
1429 "R_PPC64_DTPREL16_LO_DS", /* name */
1430 FALSE, /* partial_inplace */
1431 0, /* src_mask */
1432 0xfffc, /* dst_mask */
1433 FALSE), /* pcrel_offset */
1434
1435 /* Computes a tp-relative displacement, the difference between the value of
1436 sym+add and the value of the thread pointer (r13). */
1437 HOWTO (R_PPC64_TPREL64,
1438 0, /* rightshift */
1439 4, /* size (0 = byte, 1 = short, 2 = long) */
1440 64, /* bitsize */
1441 FALSE, /* pc_relative */
1442 0, /* bitpos */
1443 complain_overflow_dont, /* complain_on_overflow */
1444 ppc64_elf_unhandled_reloc, /* special_function */
1445 "R_PPC64_TPREL64", /* name */
1446 FALSE, /* partial_inplace */
1447 0, /* src_mask */
1448 ONES (64), /* dst_mask */
1449 FALSE), /* pcrel_offset */
1450
1451 /* A 16 bit tprel reloc. */
1452 HOWTO (R_PPC64_TPREL16,
1453 0, /* rightshift */
1454 1, /* size (0 = byte, 1 = short, 2 = long) */
1455 16, /* bitsize */
1456 FALSE, /* pc_relative */
1457 0, /* bitpos */
1458 complain_overflow_signed, /* complain_on_overflow */
1459 ppc64_elf_unhandled_reloc, /* special_function */
1460 "R_PPC64_TPREL16", /* name */
1461 FALSE, /* partial_inplace */
1462 0, /* src_mask */
1463 0xffff, /* dst_mask */
1464 FALSE), /* pcrel_offset */
1465
1466 /* Like TPREL16, but no overflow. */
1467 HOWTO (R_PPC64_TPREL16_LO,
1468 0, /* rightshift */
1469 1, /* size (0 = byte, 1 = short, 2 = long) */
1470 16, /* bitsize */
1471 FALSE, /* pc_relative */
1472 0, /* bitpos */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc, /* special_function */
1475 "R_PPC64_TPREL16_LO", /* name */
1476 FALSE, /* partial_inplace */
1477 0, /* src_mask */
1478 0xffff, /* dst_mask */
1479 FALSE), /* pcrel_offset */
1480
1481 /* Like TPREL16_LO, but next higher group of 16 bits. */
1482 HOWTO (R_PPC64_TPREL16_HI,
1483 16, /* rightshift */
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1485 16, /* bitsize */
1486 FALSE, /* pc_relative */
1487 0, /* bitpos */
1488 complain_overflow_dont, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc, /* special_function */
1490 "R_PPC64_TPREL16_HI", /* name */
1491 FALSE, /* partial_inplace */
1492 0, /* src_mask */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1495
1496 /* Like TPREL16_HI, but adjust for low 16 bits. */
1497 HOWTO (R_PPC64_TPREL16_HA,
1498 16, /* rightshift */
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1500 16, /* bitsize */
1501 FALSE, /* pc_relative */
1502 0, /* bitpos */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc, /* special_function */
1505 "R_PPC64_TPREL16_HA", /* name */
1506 FALSE, /* partial_inplace */
1507 0, /* src_mask */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1510
1511 /* Like TPREL16_HI, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HIGHER,
1513 32, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1515 16, /* bitsize */
1516 FALSE, /* pc_relative */
1517 0, /* bitpos */
1518 complain_overflow_dont, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc, /* special_function */
1520 "R_PPC64_TPREL16_HIGHER", /* name */
1521 FALSE, /* partial_inplace */
1522 0, /* src_mask */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1525
1526 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HIGHERA,
1528 32, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1530 16, /* bitsize */
1531 FALSE, /* pc_relative */
1532 0, /* bitpos */
1533 complain_overflow_dont, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc, /* special_function */
1535 "R_PPC64_TPREL16_HIGHERA", /* name */
1536 FALSE, /* partial_inplace */
1537 0, /* src_mask */
1538 0xffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1540
1541 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHEST,
1543 48, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1545 16, /* bitsize */
1546 FALSE, /* pc_relative */
1547 0, /* bitpos */
1548 complain_overflow_dont, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc, /* special_function */
1550 "R_PPC64_TPREL16_HIGHEST", /* name */
1551 FALSE, /* partial_inplace */
1552 0, /* src_mask */
1553 0xffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1555
1556 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1558 48, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1560 16, /* bitsize */
1561 FALSE, /* pc_relative */
1562 0, /* bitpos */
1563 complain_overflow_dont, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc, /* special_function */
1565 "R_PPC64_TPREL16_HIGHESTA", /* name */
1566 FALSE, /* partial_inplace */
1567 0, /* src_mask */
1568 0xffff, /* dst_mask */
1569 FALSE), /* pcrel_offset */
1570
1571 /* Like TPREL16, but for insns with a DS field. */
1572 HOWTO (R_PPC64_TPREL16_DS,
1573 0, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1575 16, /* bitsize */
1576 FALSE, /* pc_relative */
1577 0, /* bitpos */
1578 complain_overflow_signed, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc, /* special_function */
1580 "R_PPC64_TPREL16_DS", /* name */
1581 FALSE, /* partial_inplace */
1582 0, /* src_mask */
1583 0xfffc, /* dst_mask */
1584 FALSE), /* pcrel_offset */
1585
1586 /* Like TPREL16_DS, but no overflow. */
1587 HOWTO (R_PPC64_TPREL16_LO_DS,
1588 0, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1590 16, /* bitsize */
1591 FALSE, /* pc_relative */
1592 0, /* bitpos */
1593 complain_overflow_dont, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc, /* special_function */
1595 "R_PPC64_TPREL16_LO_DS", /* name */
1596 FALSE, /* partial_inplace */
1597 0, /* src_mask */
1598 0xfffc, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1600
1601 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1602 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1603 to the first entry relative to the TOC base (r2). */
1604 HOWTO (R_PPC64_GOT_TLSGD16,
1605 0, /* rightshift */
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1607 16, /* bitsize */
1608 FALSE, /* pc_relative */
1609 0, /* bitpos */
1610 complain_overflow_signed, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc, /* special_function */
1612 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1613 FALSE, /* partial_inplace */
5bd4f169
AM		 1614 0, /* src_mask */
1615 0xffff, /* dst_mask */
b34976b6 1616 FALSE), /* pcrel_offset */
5bd4f169 1617
411e1bfb
AM		 1618 /* Like GOT_TLSGD16, but no overflow. */
1619 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1620 0, /* rightshift */
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1622 16, /* bitsize */
b34976b6 1623 FALSE, /* pc_relative */
5bd4f169
AM		 1624 0, /* bitpos */
1625 complain_overflow_dont, /* complain_on_overflow */
805fc799 1626 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1627 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1628 FALSE, /* partial_inplace */
5bd4f169
AM		 1629 0, /* src_mask */
1630 0xffff, /* dst_mask */
b34976b6 1631 FALSE), /* pcrel_offset */
5bd4f169 1632
411e1bfb
AM		 1633 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1634 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1635 16, /* rightshift */
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1637 16, /* bitsize */
b34976b6 1638 FALSE, /* pc_relative */
5bd4f169
AM		 1639 0, /* bitpos */
1640 complain_overflow_dont, /* complain_on_overflow */
805fc799 1641 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1642 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1643 FALSE, /* partial_inplace */
5bd4f169
AM		 1644 0, /* src_mask */
1645 0xffff, /* dst_mask */
b34976b6 1646 FALSE), /* pcrel_offset */
5bd4f169 1647
411e1bfb
AM		 1648 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1650 16, /* rightshift */
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 16, /* bitsize */
b34976b6 1653 FALSE, /* pc_relative */
5bd4f169 1654 0, /* bitpos */
411e1bfb 1655 complain_overflow_dont, /* complain_on_overflow */
805fc799 1656 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1657 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1658 FALSE, /* partial_inplace */
5bd4f169
AM		 1659 0, /* src_mask */
1660 0xffff, /* dst_mask */
b34976b6 1661 FALSE), /* pcrel_offset */
5bd4f169 1662
411e1bfb
AM		 1663 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1664 with values (sym+add)@dtpmod and zero, and computes the offset to the
1665 first entry relative to the TOC base (r2). */
1666 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1667 0, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 16, /* bitsize */
b34976b6 1670 FALSE, /* pc_relative */
5bd4f169 1671 0, /* bitpos */
411e1bfb
AM		 1672 complain_overflow_signed, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc, /* special_function */
1674 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1675 FALSE, /* partial_inplace */
d006db6c 1676 0, /* src_mask */
411e1bfb 1677 0xffff, /* dst_mask */
b34976b6 1678 FALSE), /* pcrel_offset */
5bd4f169 1679
411e1bfb
AM		 1680 /* Like GOT_TLSLD16, but no overflow. */
1681 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1682 0, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 16, /* bitsize */
b34976b6 1685 FALSE, /* pc_relative */
5bd4f169 1686 0, /* bitpos */
411e1bfb
AM		 1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc, /* special_function */
1689 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1690 FALSE, /* partial_inplace */
d006db6c 1691 0, /* src_mask */
411e1bfb 1692 0xffff, /* dst_mask */
b34976b6 1693 FALSE), /* pcrel_offset */
5bd4f169 1694
411e1bfb
AM		 1695 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1696 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1697 16, /* rightshift */
5bd4f169
AM		 1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1699 16, /* bitsize */
b34976b6 1700 FALSE, /* pc_relative */
5bd4f169 1701 0, /* bitpos */
411e1bfb 1702 complain_overflow_dont, /* complain_on_overflow */
805fc799 1703 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1704 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1705 FALSE, /* partial_inplace */
d006db6c 1706 0, /* src_mask */
411e1bfb 1707 0xffff, /* dst_mask */
b34976b6 1708 FALSE), /* pcrel_offset */
5bd4f169 1709
411e1bfb
AM		 1710 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1712 16, /* rightshift */
5bd4f169
AM		 1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1714 16, /* bitsize */
b34976b6 1715 FALSE, /* pc_relative */
5bd4f169
AM		 1716 0, /* bitpos */
1717 complain_overflow_dont, /* complain_on_overflow */
805fc799 1718 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1719 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1720 FALSE, /* partial_inplace */
d006db6c 1721 0, /* src_mask */
411e1bfb 1722 0xffff, /* dst_mask */
b34976b6 1723 FALSE), /* pcrel_offset */
5bd4f169 1724
411e1bfb
AM		 1725 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1726 the offset to the entry relative to the TOC base (r2). */
1727 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1728 0, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 16, /* bitsize */
b34976b6 1731 FALSE, /* pc_relative */
5bd4f169 1732 0, /* bitpos */
411e1bfb 1733 complain_overflow_signed, /* complain_on_overflow */
805fc799 1734 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1735 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1736 FALSE, /* partial_inplace */
d006db6c 1737 0, /* src_mask */
5bd4f169 1738 0xfffc, /* dst_mask */
b34976b6 1739 FALSE), /* pcrel_offset */
5bd4f169 1740
411e1bfb
AM		 1741 /* Like GOT_DTPREL16_DS, but no overflow. */
1742 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1743 0, /* rightshift */
c061c2d8
AM		 1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 16, /* bitsize */
b34976b6 1746 FALSE, /* pc_relative */
5bd4f169 1747 0, /* bitpos */
411e1bfb
AM		 1748 complain_overflow_dont, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc, /* special_function */
1750 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1751 FALSE, /* partial_inplace */
d006db6c 1752 0, /* src_mask */
c061c2d8 1753 0xfffc, /* dst_mask */
b34976b6 1754 FALSE), /* pcrel_offset */
5bd4f169 1755
411e1bfb
AM		 1756 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1757 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1758 16, /* rightshift */
5bd4f169
AM		 1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1760 16, /* bitsize */
b34976b6 1761 FALSE, /* pc_relative */
5bd4f169
AM		 1762 0, /* bitpos */
1763 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1764 ppc64_elf_unhandled_reloc, /* special_function */
1765 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1766 FALSE, /* partial_inplace */
d006db6c 1767 0, /* src_mask */
411e1bfb 1768 0xffff, /* dst_mask */
b34976b6 1769 FALSE), /* pcrel_offset */
5bd4f169 1770
411e1bfb
AM		 1771 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1773 16, /* rightshift */
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1775 16, /* bitsize */
1776 FALSE, /* pc_relative */
1777 0, /* bitpos */
1778 complain_overflow_dont, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_HA", /* name */
1781 FALSE, /* partial_inplace */
1782 0, /* src_mask */
1783 0xffff, /* dst_mask */
1784 FALSE), /* pcrel_offset */
1785
1786 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1787 offset to the entry relative to the TOC base (r2). */
1788 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1789 0, /* rightshift */
1790 1, /* size (0 = byte, 1 = short, 2 = long) */
1791 16, /* bitsize */
b34976b6 1792 FALSE, /* pc_relative */
5bd4f169
AM		 1793 0, /* bitpos */
1794 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1795 ppc64_elf_unhandled_reloc, /* special_function */
1796 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1797 FALSE, /* partial_inplace */
d006db6c 1798 0, /* src_mask */
ad8e1ba5 1799 0xfffc, /* dst_mask */
b34976b6 1800 FALSE), /* pcrel_offset */
5bd4f169 1801
411e1bfb
AM		 1802 /* Like GOT_TPREL16_DS, but no overflow. */
1803 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1804 0, /* rightshift */
1805 1, /* size (0 = byte, 1 = short, 2 = long) */
1806 16, /* bitsize */
b34976b6 1807 FALSE, /* pc_relative */
5bd4f169
AM		 1808 0, /* bitpos */
1809 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1810 ppc64_elf_unhandled_reloc, /* special_function */
1811 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1812 FALSE, /* partial_inplace */
d006db6c 1813 0, /* src_mask */
ad8e1ba5 1814 0xfffc, /* dst_mask */
b34976b6 1815 FALSE), /* pcrel_offset */
5bd4f169 1816
411e1bfb
AM		 1817 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1818 HOWTO (R_PPC64_GOT_TPREL16_HI,
1819 16, /* rightshift */
5bd4f169
AM		 1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1821 16, /* bitsize */
b34976b6 1822 FALSE, /* pc_relative */
5bd4f169 1823 0, /* bitpos */
411e1bfb 1824 complain_overflow_dont, /* complain_on_overflow */
805fc799 1825 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1826 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1827 FALSE, /* partial_inplace */
d006db6c 1828 0, /* src_mask */
411e1bfb 1829 0xffff, /* dst_mask */
b34976b6 1830 FALSE), /* pcrel_offset */
5bd4f169 1831
411e1bfb
AM		 1832 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1833 HOWTO (R_PPC64_GOT_TPREL16_HA,
1834 16, /* rightshift */
5bd4f169
AM		 1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1836 16, /* bitsize */
b34976b6 1837 FALSE, /* pc_relative */
5bd4f169
AM		 1838 0, /* bitpos */
1839 complain_overflow_dont, /* complain_on_overflow */
805fc799 1840 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1841 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1842 FALSE, /* partial_inplace */
d006db6c 1843 0, /* src_mask */
411e1bfb 1844 0xffff, /* dst_mask */
b34976b6 1845 FALSE), /* pcrel_offset */
5bd4f169
AM		 1846
1847 /* GNU extension to record C++ vtable hierarchy. */
1848 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1849 0, /* rightshift */
1850 0, /* size (0 = byte, 1 = short, 2 = long) */
1851 0, /* bitsize */
b34976b6 1852 FALSE, /* pc_relative */
5bd4f169
AM		 1853 0, /* bitpos */
1854 complain_overflow_dont, /* complain_on_overflow */
1855 NULL, /* special_function */
1856 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1857 FALSE, /* partial_inplace */
5bd4f169
AM		 1858 0, /* src_mask */
1859 0, /* dst_mask */
b34976b6 1860 FALSE), /* pcrel_offset */
5bd4f169
AM		 1861
1862 /* GNU extension to record C++ vtable member usage. */
1863 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1864 0, /* rightshift */
1865 0, /* size (0 = byte, 1 = short, 2 = long) */
1866 0, /* bitsize */
b34976b6 1867 FALSE, /* pc_relative */
5bd4f169
AM		 1868 0, /* bitpos */
1869 complain_overflow_dont, /* complain_on_overflow */
1870 NULL, /* special_function */
1871 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1872 FALSE, /* partial_inplace */
5bd4f169
AM		 1873 0, /* src_mask */
1874 0, /* dst_mask */
b34976b6 1875 FALSE), /* pcrel_offset */
5bd4f169
AM		 1876};
1877
1878\f
1879/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1880 be done. */
1881
1882static void
4ce794b7 1883ppc_howto_init (void)
5bd4f169
AM		 1884{
1885 unsigned int i, type;
1886
1887 for (i = 0;
1888 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1889 i++)
1890 {
1891 type = ppc64_elf_howto_raw[i].type;
1892 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1893 / sizeof (ppc64_elf_howto_table[0])));
1894 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1895 }
1896}
1897
1898static reloc_howto_type *
4ce794b7
AM		 1899ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1900 bfd_reloc_code_real_type code)
5bd4f169 1901{
411e1bfb 1902 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1903
1904 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1905 /* Initialize howto table if needed. */
1906 ppc_howto_init ();
1907
4ce794b7 1908 switch (code)
5bd4f169
AM		 1909 {
1910 default:
4ce794b7 1911 return NULL;
5bd4f169 1912
411e1bfb
AM		 1913 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1914 break;
1915 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1916 break;
1917 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1918 break;
1919 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1920 break;
1921 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1922 break;
1923 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1924 break;
1925 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1926 break;
411e1bfb 1927 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1928 break;
411e1bfb 1929 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1930 break;
411e1bfb 1931 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1932 break;
411e1bfb 1933 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1934 break;
411e1bfb 1935 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1936 break;
411e1bfb 1937 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1938 break;
411e1bfb 1939 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1940 break;
411e1bfb 1941 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1942 break;
411e1bfb 1943 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1944 break;
411e1bfb 1945 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1946 break;
411e1bfb 1947 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1948 break;
411e1bfb 1949 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1950 break;
411e1bfb 1951 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1952 break;
411e1bfb 1953 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1954 break;
411e1bfb 1955 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1956 break;
411e1bfb 1957 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1958 break;
411e1bfb 1959 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1960 break;
411e1bfb 1961 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1962 break;
411e1bfb 1963 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1964 break;
411e1bfb 1965 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1966 break;
411e1bfb 1967 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1968 break;
411e1bfb 1969 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1970 break;
411e1bfb 1971 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1972 break;
411e1bfb 1973 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1974 break;
411e1bfb 1975 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1976 break;
411e1bfb 1977 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1978 break;
411e1bfb 1979 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1980 break;
411e1bfb 1981 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1982 break;
411e1bfb 1983 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1984 break;
411e1bfb 1985 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1986 break;
411e1bfb 1987 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1988 break;
411e1bfb 1989 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1990 break;
411e1bfb 1991 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1992 break;
411e1bfb 1993 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1994 break;
411e1bfb 1995 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1996 break;
411e1bfb 1997 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1998 break;
411e1bfb 1999 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2000 break;
411e1bfb 2001 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2002 break;
411e1bfb 2003 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2004 break;
411e1bfb 2005 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2006 break;
411e1bfb 2007 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2008 break;
411e1bfb 2009 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2010 break;
411e1bfb 2011 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2012 break;
411e1bfb 2013 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2014 break;
411e1bfb 2015 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2016 break;
411e1bfb 2017 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2018 break;
411e1bfb 2019 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2020 break;
411e1bfb 2021 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2022 break;
411e1bfb 2023 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2024 break;
411e1bfb 2025 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2026 break;
411e1bfb 2027 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2028 break;
411e1bfb 2029 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2030 break;
411e1bfb 2031 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2032 break;
411e1bfb 2033 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2034 break;
411e1bfb 2035 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2036 break;
411e1bfb 2037 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2038 break;
411e1bfb 2039 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2040 break;
411e1bfb 2041 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2042 break;
411e1bfb 2043 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2044 break;
411e1bfb
AM		 2045 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2046 break;
2047 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2048 break;
2049 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2050 break;
2051 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2052 break;
2053 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2054 break;
2055 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2056 break;
2057 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2058 break;
2059 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2060 break;
2061 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2062 break;
2063 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2064 break;
2065 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2066 break;
2067 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2068 break;
2069 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2070 break;
2071 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2072 break;
2073 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2074 break;
2075 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2076 break;
2077 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2078 break;
2079 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2080 break;
2081 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2082 break;
2083 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2084 break;
2085 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2086 break;
2087 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2088 break;
2089 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2090 break;
2091 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2092 break;
2093 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2094 break;
2095 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2096 break;
2097 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2098 break;
2099 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2100 break;
2101 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2102 break;
2103 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2104 break;
2105 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2106 break;
2107 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2108 break;
2109 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2110 break;
2111 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2112 break;
2113 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2114 break;
2115 }
2116
4ce794b7 2117 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2118};
2119
157090f7
AM		 2120static reloc_howto_type *
2121ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2122 const char *r_name)
2123{
2124 unsigned int i;
2125
2126 for (i = 0;
2127 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2128 i++)
2129 if (ppc64_elf_howto_raw[i].name != NULL
2130 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2131 return &ppc64_elf_howto_raw[i];
2132
2133 return NULL;
2134}
2135
5bd4f169
AM		 2136/* Set the howto pointer for a PowerPC ELF reloc. */
2137
2138static void
4ce794b7
AM		 2139ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2140 Elf_Internal_Rela *dst)
5bd4f169 2141{
65f38f15
AM		 2142 unsigned int type;
2143
ef60b7ff 2144 /* Initialize howto table if needed. */
5bd4f169 2145 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2146 ppc_howto_init ();
2147
65f38f15 2148 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2149 if (type >= (sizeof (ppc64_elf_howto_table)
2150 / sizeof (ppc64_elf_howto_table[0])))
2151 {
2152 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2153 abfd, (int) type);
2154 type = R_PPC64_NONE;
d0fb9a8d 2155 }
65f38f15 2156 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2157}
2158
04c9666a 2159/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2160
2161static bfd_reloc_status_type
4ce794b7
AM		 2162ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2163 void *data, asection *input_section,
2164 bfd *output_bfd, char **error_message)
5bd4f169 2165{
805fc799
AM		 2166 /* If this is a relocatable link (output_bfd test tells us), just
2167 call the generic function. Any adjustment will be done at final
2168 link time. */
2169 if (output_bfd != NULL)
cedb70c5 2170 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2171 input_section, output_bfd, error_message);
2172
2173 /* Adjust the addend for sign extension of the low 16 bits.
2174 We won't actually be using the low 16 bits, so trashing them
2175 doesn't matter. */
2176 reloc_entry->addend += 0x8000;
2177 return bfd_reloc_continue;
2178}
5bd4f169 2179
2441e016
AM		 2180static bfd_reloc_status_type
2181ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2182 void *data, asection *input_section,
2183 bfd *output_bfd, char **error_message)
2184{
2185 if (output_bfd != NULL)
2186 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2187 input_section, output_bfd, error_message);
2188
699733f6
AM		 2189 if (strcmp (symbol->section->name, ".opd") == 0
2190 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2191 {
2192 bfd_vma dest = opd_entry_value (symbol->section,
2193 symbol->value + reloc_entry->addend,
2194 NULL, NULL);
2195 if (dest != (bfd_vma) -1)
2196 reloc_entry->addend = dest - (symbol->value
2197 + symbol->section->output_section->vma
2198 + symbol->section->output_offset);
2199 }
2200 return bfd_reloc_continue;
2201}
2202
805fc799 2203static bfd_reloc_status_type
4ce794b7
AM		 2204ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2205 void *data, asection *input_section,
2206 bfd *output_bfd, char **error_message)
805fc799
AM		 2207{
2208 long insn;
04c9666a 2209 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2210 bfd_size_type octets;
2211 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2212 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2213
2214 /* If this is a relocatable link (output_bfd test tells us), just
2215 call the generic function. Any adjustment will be done at final
2216 link time. */
5bd4f169 2217 if (output_bfd != NULL)
cedb70c5 2218 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2219 input_section, output_bfd, error_message);
2220
2221 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2222 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2223 insn &= ~(0x01 << 21);
4ce794b7 2224 r_type = reloc_entry->howto->type;
805fc799
AM		 2225 if (r_type == R_PPC64_ADDR14_BRTAKEN
2226 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2227 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2228
2229 if (is_power4)
5bd4f169 2230 {
805fc799
AM		 2231 /* Set 'a' bit. This is 0b00010 in BO field for branch
2232 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2233 for branch on CTR insns (BO == 1a00t or 1a01t). */
2234 if ((insn & (0x14 << 21)) == (0x04 << 21))
2235 insn |= 0x02 << 21;
2236 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2237 insn |= 0x08 << 21;
2238 else
2441e016 2239 goto out;
5bd4f169 2240 }
805fc799
AM		 2241 else
2242 {
2243 bfd_vma target = 0;
2244 bfd_vma from;
5bd4f169 2245
805fc799
AM		 2246 if (!bfd_is_com_section (symbol->section))
2247 target = symbol->value;
2248 target += symbol->section->output_section->vma;
2249 target += symbol->section->output_offset;
2250 target += reloc_entry->addend;
5bd4f169 2251
805fc799
AM		 2252 from = (reloc_entry->address
2253 + input_section->output_offset
2254 + input_section->output_section->vma);
5bd4f169 2255
805fc799
AM		 2256 /* Invert 'y' bit if not the default. */
2257 if ((bfd_signed_vma) (target - from) < 0)
2258 insn ^= 0x01 << 21;
2259 }
4ce794b7 2260 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2261 out:
2262 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2263 input_section, output_bfd, error_message);
805fc799 2264}
5bd4f169 2265
805fc799 2266static bfd_reloc_status_type
4ce794b7
AM		 2267ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2268 void *data, asection *input_section,
2269 bfd *output_bfd, char **error_message)
805fc799
AM		 2270{
2271 /* If this is a relocatable link (output_bfd test tells us), just
2272 call the generic function. Any adjustment will be done at final
2273 link time. */
2274 if (output_bfd != NULL)
cedb70c5 2275 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2276 input_section, output_bfd, error_message);
5bd4f169 2277
805fc799
AM		 2278 /* Subtract the symbol section base address. */
2279 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2280 return bfd_reloc_continue;
2281}
2282
805fc799 2283static bfd_reloc_status_type
4ce794b7
AM		 2284ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2285 void *data, asection *input_section,
2286 bfd *output_bfd, char **error_message)
805fc799
AM		 2287{
2288 /* If this is a relocatable link (output_bfd test tells us), just
2289 call the generic function. Any adjustment will be done at final
2290 link time. */
2291 if (output_bfd != NULL)
cedb70c5 2292 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2293 input_section, output_bfd, error_message);
2294
2295 /* Subtract the symbol section base address. */
2296 reloc_entry->addend -= symbol->section->output_section->vma;
2297
2298 /* Adjust the addend for sign extension of the low 16 bits. */
2299 reloc_entry->addend += 0x8000;
2300 return bfd_reloc_continue;
2301}
2302
2303static bfd_reloc_status_type
4ce794b7
AM		 2304ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2305 void *data, asection *input_section,
2306 bfd *output_bfd, char **error_message)
805fc799
AM		 2307{
2308 bfd_vma TOCstart;
2309
2310 /* If this is a relocatable link (output_bfd test tells us), just
2311 call the generic function. Any adjustment will be done at final
2312 link time. */
2313 if (output_bfd != NULL)
cedb70c5 2314 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2315 input_section, output_bfd, error_message);
2316
2317 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2318 if (TOCstart == 0)
2319 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2320
2321 /* Subtract the TOC base address. */
2322 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2323 return bfd_reloc_continue;
2324}
2325
2326static bfd_reloc_status_type
4ce794b7
AM		 2327ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2328 void *data, asection *input_section,
2329 bfd *output_bfd, char **error_message)
805fc799
AM		 2330{
2331 bfd_vma TOCstart;
2332
2333 /* If this is a relocatable link (output_bfd test tells us), just
2334 call the generic function. Any adjustment will be done at final
2335 link time. */
2336 if (output_bfd != NULL)
cedb70c5 2337 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2338 input_section, output_bfd, error_message);
2339
2340 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2341 if (TOCstart == 0)
2342 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2343
2344 /* Subtract the TOC base address. */
2345 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2346
2347 /* Adjust the addend for sign extension of the low 16 bits. */
2348 reloc_entry->addend += 0x8000;
2349 return bfd_reloc_continue;
2350}
2351
2352static bfd_reloc_status_type
4ce794b7
AM		 2353ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2354 void *data, asection *input_section,
2355 bfd *output_bfd, char **error_message)
805fc799
AM		 2356{
2357 bfd_vma TOCstart;
2358 bfd_size_type octets;
2359
2360 /* If this is a relocatable link (output_bfd test tells us), just
2361 call the generic function. Any adjustment will be done at final
2362 link time. */
2363 if (output_bfd != NULL)
cedb70c5 2364 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2365 input_section, output_bfd, error_message);
2366
2367 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2368 if (TOCstart == 0)
2369 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2370
2371 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2372 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2373 return bfd_reloc_ok;
2374}
2375
2376static bfd_reloc_status_type
4ce794b7
AM		 2377ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2378 void *data, asection *input_section,
2379 bfd *output_bfd, char **error_message)
805fc799
AM		 2380{
2381 /* If this is a relocatable link (output_bfd test tells us), just
2382 call the generic function. Any adjustment will be done at final
2383 link time. */
2384 if (output_bfd != NULL)
cedb70c5 2385 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2386 input_section, output_bfd, error_message);
2387
2388 if (error_message != NULL)
2389 {
2390 static char buf[60];
2391 sprintf (buf, "generic linker can't handle %s",
2392 reloc_entry->howto->name);
2393 *error_message = buf;
2394 }
2395 return bfd_reloc_dangerous;
2396}
2397
e717da7e
AM		 2398struct ppc64_elf_obj_tdata
2399{
2400 struct elf_obj_tdata elf;
2401
2402 /* Shortcuts to dynamic linker sections. */
2403 asection *got;
2404 asection *relgot;
2405
b3fac117
AM		 2406 /* Used during garbage collection. We attach global symbols defined
2407 on removed .opd entries to this section so that the sym is removed. */
2408 asection *deleted_section;
81688140 2409
e717da7e
AM		 2410 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2411 sections means we potentially need one of these for each input bfd. */
2412 union {
2413 bfd_signed_vma refcount;
2414 bfd_vma offset;
2415 } tlsld_got;
8860955f
AM		 2416
2417 /* A copy of relocs before they are modified for --emit-relocs. */
2418 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2419};
2420
2421#define ppc64_elf_tdata(bfd) \
2422 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2423
2424#define ppc64_tlsld_got(bfd) \
2425 (&ppc64_elf_tdata (bfd)->tlsld_got)
2426
2427/* Override the generic function because we store some extras. */
2428
2429static bfd_boolean
2430ppc64_elf_mkobject (bfd *abfd)
2431{
e717da7e 2432 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 2433 {
2434 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2435 abfd->tdata.any = bfd_zalloc (abfd, amt);
2436 if (abfd->tdata.any == NULL)
2437 return FALSE;
2438 }
2439 return bfd_elf_mkobject (abfd);
e717da7e
AM		 2440}
2441
ee75fd95
AM		 2442/* Return 1 if target is one of ours. */
2443
7b53ace3 2444static bfd_boolean
ee75fd95 2445is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2446{
2447 extern const bfd_target bfd_elf64_powerpc_vec;
2448 extern const bfd_target bfd_elf64_powerpcle_vec;
2449
2450 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2451}
2452
feee612b
AM		 2453/* Fix bad default arch selected for a 64 bit input bfd when the
2454 default is 32 bit. */
2455
b34976b6 2456static bfd_boolean
4ce794b7 2457ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2458{
2459 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2460 {
2461 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2462
2463 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2464 {
2465 /* Relies on arch after 32 bit default being 64 bit default. */
2466 abfd->arch_info = abfd->arch_info->next;
2467 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2468 }
2469 }
b34976b6 2470 return TRUE;
feee612b
AM		 2471}
2472
d37c89e5
AM		 2473/* Support for core dump NOTE sections. */
2474
2475static bfd_boolean
2476ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2477{
eea6121a 2478 size_t offset, size;
d37c89e5
AM		 2479
2480 if (note->descsz != 504)
2481 return FALSE;
2482
2483 /* pr_cursig */
2484 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2485
2486 /* pr_pid */
2487 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2488
2489 /* pr_reg */
2490 offset = 112;
eea6121a 2491 size = 384;
d37c89e5
AM		 2492
2493 /* Make a ".reg/999" section. */
2494 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2495 size, note->descpos + offset);
d37c89e5
AM		 2496}
2497
2498static bfd_boolean
2499ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2500{
2501 if (note->descsz != 136)
2502 return FALSE;
2503
2504 elf_tdata (abfd)->core_program
2505 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2506 elf_tdata (abfd)->core_command
2507 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2508
2509 return TRUE;
2510}
2511
183e98be
AM		 2512static char *
2513ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2514 ...)
2515{
2516 switch (note_type)
2517 {
2518 default:
2519 return NULL;
2520
2521 case NT_PRPSINFO:
2522 {
2523 char data[136];
2524 va_list ap;
2525
2526 va_start (ap, note_type);
2527 memset (data, 0, 40);
2528 strncpy (data + 40, va_arg (ap, const char *), 16);
2529 strncpy (data + 56, va_arg (ap, const char *), 80);
2530 va_end (ap);
2531 return elfcore_write_note (abfd, buf, bufsiz,
2532 "CORE", note_type, data, sizeof (data));
2533 }
2534
2535 case NT_PRSTATUS:
2536 {
2537 char data[504];
2538 va_list ap;
2539 long pid;
2540 int cursig;
2541 const void *greg;
2542
2543 va_start (ap, note_type);
2544 memset (data, 0, 112);
2545 pid = va_arg (ap, long);
2546 bfd_put_32 (abfd, pid, data + 32);
2547 cursig = va_arg (ap, int);
2548 bfd_put_16 (abfd, cursig, data + 12);
2549 greg = va_arg (ap, const void *);
2550 memcpy (data + 112, greg, 384);
2551 memset (data + 496, 0, 8);
2552 va_end (ap);
2553 return elfcore_write_note (abfd, buf, bufsiz,
2554 "CORE", note_type, data, sizeof (data));
2555 }
2556 }
2557}
2558
5bd4f169
AM		 2559/* Merge backend specific data from an object file to the output
2560 object file when linking. */
2f6d9989 2561
b34976b6 2562static bfd_boolean
4ce794b7 2563ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2564{
5bd4f169
AM		 2565 /* Check if we have the same endianess. */
2566 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2567 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2568 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2569 {
2570 const char *msg;
2571
2572 if (bfd_big_endian (ibfd))
d003868e 2573 msg = _("%B: compiled for a big endian system "
4ce794b7 2574 "and target is little endian");
5bd4f169 2575 else
d003868e 2576 msg = _("%B: compiled for a little endian system "
4ce794b7 2577 "and target is big endian");
5bd4f169 2578
d003868e 2579 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2580
2581 bfd_set_error (bfd_error_wrong_format);
b34976b6 2582 return FALSE;
5bd4f169
AM		 2583 }
2584
b34976b6 2585 return TRUE;
5bd4f169 2586}
f0abc2a1 2587
5d35169e
AM		 2588/* Add extra PPC sections. */
2589
b35d266b 2590static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2591{
0112cd26
NC		 2592 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2593 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2594 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2595 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2596 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2597 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2598 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2599};
2600
7c8fe5c4
AM		 2601enum _ppc64_sec_type {
2602 sec_normal = 0,
2603 sec_opd = 1,
2604 sec_toc = 2
2605};
2606
f0abc2a1
AM		 2607struct _ppc64_elf_section_data
2608{
2609 struct bfd_elf_section_data elf;
411e1bfb
AM		 2610
2611 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2612 union
2613 {
411e1bfb 2614 /* Points to the function code section for local opd entries. */
7c8fe5c4 2615 asection **opd_func_sec;
411e1bfb 2616 /* After editing .opd, adjust references to opd local syms. */
7c8fe5c4
AM		 2617 long *opd_adjust;
2618
2619 /* An array for toc sections, indexed by offset/8.
2620 Specifies the relocation symbol index used at a given toc offset. */
2621 unsigned *t_symndx;
2622 } u;
2623
2624 enum _ppc64_sec_type sec_type:2;
411e1bfb 2625
7c8fe5c4
AM		 2626 /* Flag set when small branches are detected. Used to
2627 select suitable defaults for the stub group size. */
2628 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2629};
2630
2631#define ppc64_elf_section_data(sec) \
411e1bfb 2632 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2633
2634static bfd_boolean
4ce794b7 2635ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2636{
f592407e
AM		 2637 if (!sec->used_by_bfd)
2638 {
2639 struct _ppc64_elf_section_data *sdata;
2640 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2641
f592407e
AM		 2642 sdata = bfd_zalloc (abfd, amt);
2643 if (sdata == NULL)
2644 return FALSE;
2645 sec->used_by_bfd = sdata;
2646 }
f0abc2a1
AM		 2647
2648 return _bfd_elf_new_section_hook (abfd, sec);
2649}
4025353c
AM		 2650
2651static void *
2652get_opd_info (asection * sec)
2653{
2654 if (sec != NULL
2655 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4
AM		 2656 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2657 return ppc64_elf_section_data (sec)->u.opd_adjust;
4025353c
AM		 2658 return NULL;
2659}
90e3cdf2
JJ		 2660\f
2661/* Parameters for the qsort hook. */
2662static asection *synthetic_opd;
2663static bfd_boolean synthetic_relocatable;
2664
699733f6 2665/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2666
2667static int
2668compare_symbols (const void *ap, const void *bp)
2669{
2670 const asymbol *a = * (const asymbol **) ap;
2671 const asymbol *b = * (const asymbol **) bp;
2672
699733f6
AM		 2673 /* Section symbols first. */
2674 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2675 return -1;
699733f6 2676 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2677 return 1;
2678
699733f6 2679 /* then .opd symbols. */
90e3cdf2
JJ		 2680 if (a->section == synthetic_opd && b->section != synthetic_opd)
2681 return -1;
2682 if (a->section != synthetic_opd && b->section == synthetic_opd)
2683 return 1;
2684
699733f6 2685 /* then other code symbols. */
90e3cdf2
JJ		 2686 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2687 == (SEC_CODE | SEC_ALLOC)
2688 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2689 != (SEC_CODE | SEC_ALLOC))
2690 return -1;
2691
2692 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2693 != (SEC_CODE | SEC_ALLOC)
2694 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2695 == (SEC_CODE | SEC_ALLOC))
2696 return 1;
2697
2698 if (synthetic_relocatable)
2699 {
2700 if (a->section->id < b->section->id)
2701 return -1;
2702
2703 if (a->section->id > b->section->id)
2704 return 1;
2705 }
2706
2707 if (a->value + a->section->vma < b->value + b->section->vma)
2708 return -1;
2709
2710 if (a->value + a->section->vma > b->value + b->section->vma)
2711 return 1;
2712
4d35a0aa
AM		 2713 /* For syms with the same value, prefer strong dynamic global function
2714 syms over other syms. */
2715 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2716 return -1;
2717
2718 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2719 return 1;
2720
2721 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2722 return -1;
2723
2724 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2725 return 1;
2726
2727 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2728 return -1;
2729
2730 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2731 return 1;
2732
2733 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2734 return -1;
2735
2736 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2737 return 1;
2738
90e3cdf2
JJ		 2739 return 0;
2740}
2741
699733f6 2742/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2743
699733f6
AM		 2744static asymbol *
2745sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2746{
699733f6 2747 long mid;
90e3cdf2 2748
699733f6
AM		 2749 if (id == -1)
2750 {
2751 while (lo < hi)
2752 {
2753 mid = (lo + hi) >> 1;
2754 if (syms[mid]->value + syms[mid]->section->vma < value)
2755 lo = mid + 1;
2756 else if (syms[mid]->value + syms[mid]->section->vma > value)
2757 hi = mid;
2758 else
2759 return syms[mid];
2760 }
2761 }
2762 else
2763 {
2764 while (lo < hi)
2765 {
2766 mid = (lo + hi) >> 1;
2767 if (syms[mid]->section->id < id)
2768 lo = mid + 1;
2769 else if (syms[mid]->section->id > id)
2770 hi = mid;
2771 else if (syms[mid]->value < value)
2772 lo = mid + 1;
2773 else if (syms[mid]->value > value)
2774 hi = mid;
2775 else
2776 return syms[mid];
2777 }
2778 }
2779 return NULL;
90e3cdf2
JJ		 2780}
2781
699733f6
AM		 2782/* Create synthetic symbols, effectively restoring "dot-symbol" function
2783 entry syms. */
90e3cdf2
JJ		 2784
2785static long
a7535cf3
AM		 2786ppc64_elf_get_synthetic_symtab (bfd *abfd,
2787 long static_count, asymbol **static_syms,
2788 long dyn_count, asymbol **dyn_syms,
c9727e01 2789 asymbol **ret)
90e3cdf2
JJ		 2790{
2791 asymbol *s;
699733f6
AM		 2792 long i;
2793 long count;
90e3cdf2 2794 char *names;
a7535cf3 2795 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2796 asection *opd;
90e3cdf2 2797 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2798 asymbol **syms;
90e3cdf2
JJ		 2799
2800 *ret = NULL;
2801
2802 opd = bfd_get_section_by_name (abfd, ".opd");
2803 if (opd == NULL)
2804 return 0;
2805
a7535cf3 2806 symcount = static_count;
c9727e01 2807 if (!relocatable)
a7535cf3 2808 symcount += dyn_count;
90e3cdf2 2809 if (symcount == 0)
c9727e01 2810 return 0;
90e3cdf2 2811
a7535cf3
AM		 2812 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2813 if (syms == NULL)
7356fed5 2814 return -1;
a7535cf3
AM		 2815
2816 if (!relocatable && static_count != 0 && dyn_count != 0)
2817 {
2818 /* Use both symbol tables. */
2819 memcpy (syms, static_syms, static_count * sizeof (*syms));
2820 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2821 }
2822 else if (!relocatable && static_count == 0)
2823 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2824 else
2825 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2826
90e3cdf2
JJ		 2827 synthetic_opd = opd;
2828 synthetic_relocatable = relocatable;
595da8c5 2829 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2830
c9727e01
AM		 2831 if (!relocatable && symcount > 1)
2832 {
2833 long j;
2834 /* Trim duplicate syms, since we may have merged the normal and
2835 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2836 different values, so trim any with the same value. */
c9727e01
AM		 2837 for (i = 1, j = 1; i < symcount; ++i)
2838 if (syms[i - 1]->value + syms[i - 1]->section->vma
2839 != syms[i]->value + syms[i]->section->vma)
2840 syms[j++] = syms[i];
2841 symcount = j;
2842 }
2843
699733f6
AM		 2844 i = 0;
2845 if (syms[i]->section == opd)
2846 ++i;
2847 codesecsym = i;
90e3cdf2 2848
699733f6
AM		 2849 for (; i < symcount; ++i)
2850 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2851 != (SEC_CODE | SEC_ALLOC))
2852 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2853 break;
2854 codesecsymend = i;
90e3cdf2 2855
699733f6
AM		 2856 for (; i < symcount; ++i)
2857 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2858 break;
2859 secsymend = i;
90e3cdf2 2860
699733f6
AM		 2861 for (; i < symcount; ++i)
2862 if (syms[i]->section != opd)
2863 break;
2864 opdsymend = i;
90e3cdf2 2865
699733f6
AM		 2866 for (; i < symcount; ++i)
2867 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2868 != (SEC_CODE | SEC_ALLOC))
2869 break;
2870 symcount = i;
2871
c9727e01 2872 count = 0;
699733f6 2873 if (opdsymend == secsymend)
c9727e01 2874 goto done;
90e3cdf2 2875
699733f6 2876 if (relocatable)
90e3cdf2 2877 {
699733f6
AM		 2878 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2879 arelent *r;
2880 size_t size;
2881 long relcount;
90e3cdf2 2882
699733f6 2883 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2884 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2885 if (relcount == 0)
c9727e01 2886 goto done;
90e3cdf2 2887
7356fed5
AM		 2888 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2889 {
2890 count = -1;
2891 goto done;
2892 }
2893
699733f6 2894 size = 0;
595da8c5 2895 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2896 {
2897 asymbol *sym;
90e3cdf2 2898
595da8c5 2899 while (r < opd->relocation + relcount
699733f6
AM		 2900 && r->address < syms[i]->value + opd->vma)
2901 ++r;
90e3cdf2 2902
595da8c5 2903 if (r == opd->relocation + relcount)
699733f6 2904 break;
90e3cdf2 2905
699733f6
AM		 2906 if (r->address != syms[i]->value + opd->vma)
2907 continue;
90e3cdf2 2908
699733f6
AM		 2909 if (r->howto->type != R_PPC64_ADDR64)
2910 continue;
90e3cdf2 2911
699733f6
AM		 2912 sym = *r->sym_ptr_ptr;
2913 if (!sym_exists_at (syms, opdsymend, symcount,
2914 sym->section->id, sym->value + r->addend))
2915 {
2916 ++count;
2917 size += sizeof (asymbol);
2918 size += strlen (syms[i]->name) + 2;
2919 }
2920 }
90e3cdf2 2921
699733f6
AM		 2922 s = *ret = bfd_malloc (size);
2923 if (s == NULL)
2924 {
7356fed5 2925 count = -1;
c9727e01 2926 goto done;
699733f6 2927 }
90e3cdf2 2928
699733f6 2929 names = (char *) (s + count);
90e3cdf2 2930
595da8c5 2931 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2932 {
699733f6 2933 asymbol *sym;
90e3cdf2 2934
595da8c5 2935 while (r < opd->relocation + relcount
699733f6
AM		 2936 && r->address < syms[i]->value + opd->vma)
2937 ++r;
90e3cdf2 2938
595da8c5 2939 if (r == opd->relocation + relcount)
699733f6
AM		 2940 break;
2941
2942 if (r->address != syms[i]->value + opd->vma)
2943 continue;
2944
2945 if (r->howto->type != R_PPC64_ADDR64)
2946 continue;
90e3cdf2 2947
699733f6
AM		 2948 sym = *r->sym_ptr_ptr;
2949 if (!sym_exists_at (syms, opdsymend, symcount,
2950 sym->section->id, sym->value + r->addend))
2951 {
2952 size_t len;
2953
2954 *s = *syms[i];
2955 s->section = sym->section;
2956 s->value = sym->value + r->addend;
2957 s->name = names;
2958 *names++ = '.';
2959 len = strlen (syms[i]->name);
2960 memcpy (names, syms[i]->name, len + 1);
2961 names += len + 1;
2962 s++;
2963 }
2964 }
2965 }
2966 else
90e3cdf2 2967 {
699733f6
AM		 2968 bfd_byte *contents;
2969 size_t size;
90e3cdf2 2970
699733f6
AM		 2971 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2972 {
2973 if (contents)
c9727e01
AM		 2974 {
2975 free_contents_and_exit:
2976 free (contents);
2977 }
7356fed5 2978 count = -1;
c9727e01 2979 goto done;
699733f6 2980 }
90e3cdf2 2981
699733f6
AM		 2982 size = 0;
2983 for (i = secsymend; i < opdsymend; ++i)
2984 {
2985 bfd_vma ent;
90e3cdf2 2986
699733f6
AM		 2987 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2988 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2989 {
2990 ++count;
2991 size += sizeof (asymbol);
2992 size += strlen (syms[i]->name) + 2;
2993 }
2994 }
90e3cdf2 2995
699733f6
AM		 2996 s = *ret = bfd_malloc (size);
2997 if (s == NULL)
7356fed5 2998 goto free_contents_and_exit;
90e3cdf2 2999
699733f6 3000 names = (char *) (s + count);
90e3cdf2 3001
699733f6 3002 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3003 {
699733f6 3004 bfd_vma ent;
90e3cdf2 3005
699733f6
AM		 3006 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3007 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3008 {
c9727e01 3009 long lo, hi;
699733f6 3010 size_t len;
c9727e01 3011 asection *sec = abfd->sections;
90e3cdf2 3012
699733f6
AM		 3013 *s = *syms[i];
3014 lo = codesecsym;
3015 hi = codesecsymend;
3016 while (lo < hi)
3017 {
c9727e01 3018 long mid = (lo + hi) >> 1;
699733f6
AM		 3019 if (syms[mid]->section->vma < ent)
3020 lo = mid + 1;
3021 else if (syms[mid]->section->vma > ent)
3022 hi = mid;
3023 else
c9727e01
AM		 3024 {
3025 sec = syms[mid]->section;
3026 break;
3027 }
699733f6
AM		 3028 }
3029
c9727e01 3030 if (lo >= hi && lo > codesecsym)
699733f6 3031 sec = syms[lo - 1]->section;
699733f6
AM		 3032
3033 for (; sec != NULL; sec = sec->next)
3034 {
3035 if (sec->vma > ent)
3036 break;
3037 if ((sec->flags & SEC_ALLOC) == 0
3038 || (sec->flags & SEC_LOAD) == 0)
3039 break;
3040 if ((sec->flags & SEC_CODE) != 0)
3041 s->section = sec;
3042 }
3043 s->value = ent - s->section->vma;
3044 s->name = names;
3045 *names++ = '.';
3046 len = strlen (syms[i]->name);
3047 memcpy (names, syms[i]->name, len + 1);
3048 names += len + 1;
3049 s++;
90e3cdf2 3050 }
90e3cdf2 3051 }
699733f6 3052 free (contents);
90e3cdf2
JJ		 3053 }
3054
c9727e01 3055 done:
a7535cf3 3056 free (syms);
90e3cdf2
JJ		 3057 return count;
3058}
5bd4f169 3059\f
65f38f15
AM		 3060/* The following functions are specific to the ELF linker, while
3061 functions above are used generally. Those named ppc64_elf_* are
3062 called by the main ELF linker code. They appear in this file more
3063 or less in the order in which they are called. eg.
3064 ppc64_elf_check_relocs is called early in the link process,
3065 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3066 called.
3067
3068 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3069 functions have both a function code symbol and a function descriptor
3070 symbol. A call to foo in a relocatable object file looks like:
3071
3072 . .text
3073 . x:
3074 . bl .foo
3075 . nop
3076
3077 The function definition in another object file might be:
3078
3079 . .section .opd
3080 . foo: .quad .foo
3081 . .quad .TOC.@tocbase
3082 . .quad 0
3083 .
3084 . .text
3085 . .foo: blr
3086
3087 When the linker resolves the call during a static link, the branch
3088 unsurprisingly just goes to .foo and the .opd information is unused.
3089 If the function definition is in a shared library, things are a little
3090 different: The call goes via a plt call stub, the opd information gets
3091 copied to the plt, and the linker patches the nop.
3092
3093 . x:
3094 . bl .foo_stub
3095 . ld 2,40(1)
3096 .
3097 .
3098 . .foo_stub:
3099 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3100 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3101 . std 2,40(1) # this is the general idea
3102 . ld 11,0(12)
3103 . ld 2,8(12)
3104 . mtctr 11
3105 . ld 11,16(12)
3106 . bctr
3107 .
3108 . .section .plt
3109 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3110
3111 The "reloc ()" notation is supposed to indicate that the linker emits
3112 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3113 copying.
3114
3115 What are the difficulties here? Well, firstly, the relocations
3116 examined by the linker in check_relocs are against the function code
3117 sym .foo, while the dynamic relocation in the plt is emitted against
3118 the function descriptor symbol, foo. Somewhere along the line, we need
3119 to carefully copy dynamic link information from one symbol to the other.
3120 Secondly, the generic part of the elf linker will make .foo a dynamic
3121 symbol as is normal for most other backends. We need foo dynamic
3122 instead, at least for an application final link. However, when
3123 creating a shared library containing foo, we need to have both symbols
3124 dynamic so that references to .foo are satisfied during the early
3125 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3126 definition from some other object, eg. a static library.
3127
3128 Update: As of August 2004, we support a new convention. Function
3129 calls may use the function descriptor symbol, ie. "bl foo". This
3130 behaves exactly as "bl .foo". */
65f38f15
AM		 3131
3132/* The linker needs to keep track of the number of relocs that it
3133 decides to copy as dynamic relocs in check_relocs for each symbol.
3134 This is so that it can later discard them if they are found to be
3135 unnecessary. We store the information in a field extending the
3136 regular ELF linker hash table. */
3137
3138struct ppc_dyn_relocs
3139{
3140 struct ppc_dyn_relocs *next;
3141
3142 /* The input section of the reloc. */
3143 asection *sec;
3144
3145 /* Total number of relocs copied for the input section. */
3146 bfd_size_type count;
3147
3148 /* Number of pc-relative relocs copied for the input section. */
3149 bfd_size_type pc_count;
3150};
3151
411e1bfb
AM		 3152/* Track GOT entries needed for a given symbol. We might need more
3153 than one got entry per symbol. */
3154struct got_entry
3155{
3156 struct got_entry *next;
3157
e7b938ca 3158 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3159 bfd_vma addend;
3160
e717da7e
AM		 3161 /* Unlike other ELF targets, we use separate GOT entries for the same
3162 symbol referenced from different input files. This is to support
3163 automatic multiple TOC/GOT sections, where the TOC base can vary
3164 from one input file to another.
3165
3166 Point to the BFD owning this GOT entry. */
3167 bfd *owner;
3168
3169 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3170 TLS_TPREL or TLS_DTPREL for tls entries. */
3171 char tls_type;
3172
e7b938ca 3173 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3174 union
3175 {
3176 bfd_signed_vma refcount;
3177 bfd_vma offset;
3178 } got;
411e1bfb
AM		 3179};
3180
3181/* The same for PLT. */
3182struct plt_entry
3183{
3184 struct plt_entry *next;
3185
3186 bfd_vma addend;
3187
3188 union
3189 {
3190 bfd_signed_vma refcount;
3191 bfd_vma offset;
3192 } plt;
3193};
3194
65f38f15 3195/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3196 selects those that must be copied when linking a shared library,
3197 even when the symbol is local. */
65f38f15 3198
411e1bfb 3199#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3200 ((RTYPE) != R_PPC64_REL32 \
3201 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3202 && (RTYPE) != R_PPC64_REL30)
65f38f15 3203
f4656909
AM		 3204/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3205 copying dynamic variables from a shared lib into an app's dynbss
3206 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3207 shared lib. With code that gcc generates, it's vital that this be
3208 enabled; In the PowerPC64 ABI, the address of a function is actually
3209 the address of a function descriptor, which resides in the .opd
3210 section. gcc uses the descriptor directly rather than going via the
3211 GOT as some other ABI's do, which means that initialized function
3212 pointers must reference the descriptor. Thus, a function pointer
3213 initialized to the address of a function in a shared library will
3214 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3215 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3216 presents a problem as a plt entry for that function is also
3217 initialized from the function descriptor symbol and the copy reloc
3218 may not be initialized first. */
a23b6845 3219#define ELIMINATE_COPY_RELOCS 1
f4656909 3220
721956f4
AM		 3221/* Section name for stubs is the associated section name plus this
3222 string. */
3223#define STUB_SUFFIX ".stub"
3224
3225/* Linker stubs.
3226 ppc_stub_long_branch:
3227 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3228 destination, but a 24 bit branch in a stub section will reach.
3229 . b dest
3230
3231 ppc_stub_plt_branch:
3232 Similar to the above, but a 24 bit branch in the stub section won't
3233 reach its destination.
87e226ce
AM		 3234 . addis %r12,%r2,xxx@toc@ha
3235 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3236 . mtctr %r11
3237 . bctr
3238
3239 ppc_stub_plt_call:
2c66dc6c
AM		 3240 Used to call a function in a shared library. If it so happens that
3241 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3242 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3243 . addis %r12,%r2,xxx@toc@ha
721956f4 3244 . std %r2,40(%r1)
87e226ce 3245 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3246 . mtctr %r11
ac2df442 3247 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3248 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3249 . bctr
ad8e1ba5
AM		 3250
3251 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3252 code to adjust the value and save r2 to support multiple toc sections.
3253 A ppc_stub_long_branch with an r2 offset looks like:
3254 . std %r2,40(%r1)
3255 . addis %r2,%r2,off@ha
3256 . addi %r2,%r2,off@l
3257 . b dest
3258
3259 A ppc_stub_plt_branch with an r2 offset looks like:
3260 . std %r2,40(%r1)
3261 . addis %r12,%r2,xxx@toc@ha
3262 . ld %r11,xxx@toc@l(%r12)
3263 . addis %r2,%r2,off@ha
3264 . addi %r2,%r2,off@l
3265 . mtctr %r11
3266 . bctr
ac2df442
AM		 3267
3268 In cases where the "addis" instruction would add zero, the "addis" is
3269 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3270*/
3271
3272enum ppc_stub_type {
3273 ppc_stub_none,
3274 ppc_stub_long_branch,
ad8e1ba5 3275 ppc_stub_long_branch_r2off,
721956f4 3276 ppc_stub_plt_branch,
ad8e1ba5 3277 ppc_stub_plt_branch_r2off,
721956f4
AM		 3278 ppc_stub_plt_call
3279};
3280
3281struct ppc_stub_hash_entry {
3282
3283 /* Base hash table entry structure. */
3284 struct bfd_hash_entry root;
3285
ad8e1ba5
AM		 3286 enum ppc_stub_type stub_type;
3287
721956f4
AM		 3288 /* The stub section. */
3289 asection *stub_sec;
3290
3291 /* Offset within stub_sec of the beginning of this stub. */
3292 bfd_vma stub_offset;
3293
3294 /* Given the symbol's value and its section we can determine its final
3295 value when building the stubs (so the stub knows where to jump. */
3296 bfd_vma target_value;
3297 asection *target_section;
3298
721956f4
AM		 3299 /* The symbol table entry, if any, that this was derived from. */
3300 struct ppc_link_hash_entry *h;
3301
411e1bfb
AM		 3302 /* And the reloc addend that this was derived from. */
3303 bfd_vma addend;
3304
721956f4
AM		 3305 /* Where this stub is being called from, or, in the case of combined
3306 stub sections, the first input section in the group. */
3307 asection *id_sec;
3308};
3309
3310struct ppc_branch_hash_entry {
3311
3312 /* Base hash table entry structure. */
3313 struct bfd_hash_entry root;
3314
c456f082 3315 /* Offset within branch lookup table. */
721956f4
AM		 3316 unsigned int offset;
3317
3318 /* Generation marker. */
3319 unsigned int iter;
3320};
65f38f15
AM		 3321
3322struct ppc_link_hash_entry
3323{
3324 struct elf_link_hash_entry elf;
3325
b3fac117
AM		 3326 union {
3327 /* A pointer to the most recently used stub hash entry against this
3328 symbol. */
3329 struct ppc_stub_hash_entry *stub_cache;
3330
3331 /* A pointer to the next symbol starting with a '.' */
3332 struct ppc_link_hash_entry *next_dot_sym;
3333 } u;
721956f4 3334
65f38f15
AM		 3335 /* Track dynamic relocs copied for this symbol. */
3336 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3337
721956f4 3338 /* Link between function code and descriptor symbols. */
34814b9f 3339 struct ppc_link_hash_entry *oh;
721956f4 3340
e86ce104
AM		 3341 /* Flag function code and descriptor symbols. */
3342 unsigned int is_func:1;
3343 unsigned int is_func_descriptor:1;
908b32fc 3344 unsigned int fake:1;
411e1bfb 3345
c5614fa4
AM		 3346 /* Whether global opd/toc sym has been adjusted or not.
3347 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3348 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3349 unsigned int adjust_done:1;
3350
99877b66
AM		 3351 /* Set if we twiddled this symbol to weak at some stage. */
3352 unsigned int was_undefined:1;
3353
411e1bfb 3354 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3355 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3356 corresponding relocs are encountered during check_relocs.
3357 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3358 indicate the corresponding GOT entry type is not needed.
3359 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3360 a TPREL one. We use a separate flag rather than setting TPREL
3361 just for convenience in distinguishing the two cases. */
3362#define TLS_GD 1 /* GD reloc. */
3363#define TLS_LD 2 /* LD reloc. */
3364#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3365#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3366#define TLS_TLS 16 /* Any TLS reloc. */
3367#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3368#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3369 char tls_mask;
65f38f15
AM		 3370};
3371
3372/* ppc64 ELF linker hash table. */
3373
3374struct ppc_link_hash_table
3375{
3376 struct elf_link_hash_table elf;
3377
721956f4
AM		 3378 /* The stub hash table. */
3379 struct bfd_hash_table stub_hash_table;
3380
3381 /* Another hash table for plt_branch stubs. */
3382 struct bfd_hash_table branch_hash_table;
3383
3384 /* Linker stub bfd. */
3385 bfd *stub_bfd;
3386
3387 /* Linker call-backs. */
4ce794b7
AM		 3388 asection * (*add_stub_section) (const char *, asection *);
3389 void (*layout_sections_again) (void);
721956f4
AM		 3390
3391 /* Array to keep track of which stub sections have been created, and
3392 information on stub grouping. */
3393 struct map_stub {
3394 /* This is the section to which stubs in the group will be attached. */
3395 asection *link_sec;
3396 /* The stub section. */
3397 asection *stub_sec;
ad8e1ba5
AM		 3398 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3399 bfd_vma toc_off;
721956f4
AM		 3400 } *stub_group;
3401
ad8e1ba5
AM		 3402 /* Temp used when calculating TOC pointers. */
3403 bfd_vma toc_curr;
3404
8f3bab57
AM		 3405 /* Highest input section id. */
3406 int top_id;
3407
734b6cf9
AM		 3408 /* Highest output section index. */
3409 int top_index;
3410
b3fac117
AM		 3411 /* Used when adding symbols. */
3412 struct ppc_link_hash_entry *dot_syms;
3413
734b6cf9
AM		 3414 /* List of input sections for each output section. */
3415 asection **input_list;
721956f4 3416
65f38f15 3417 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3418 asection *got;
4ce794b7
AM		 3419 asection *plt;
3420 asection *relplt;
3421 asection *dynbss;
3422 asection *relbss;
3423 asection *glink;
82bd7b59 3424 asection *sfpr;
4ce794b7
AM		 3425 asection *brlt;
3426 asection *relbrlt;
ec338859 3427
8387904d
AM		 3428 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3429 struct ppc_link_hash_entry *tls_get_addr;
3430 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3431
9b5ecbd0
AM		 3432 /* Statistics. */
3433 unsigned long stub_count[ppc_stub_plt_call];
3434
ee75fd95
AM		 3435 /* Number of stubs against global syms. */
3436 unsigned long stub_globals;
3437
ad8e1ba5 3438 /* Set if we should emit symbols for stubs. */
99877b66 3439 unsigned int emit_stub_syms:1;
ad8e1ba5 3440
4c52953f
AM		 3441 /* Support for multiple toc sections. */
3442 unsigned int no_multi_toc:1;
3443 unsigned int multi_toc_needed:1;
3444
5d1634d7 3445 /* Set on error. */
99877b66 3446 unsigned int stub_error:1;
721956f4 3447
99877b66
AM		 3448 /* Temp used by ppc64_elf_check_directives. */
3449 unsigned int twiddled_syms:1;
721956f4
AM		 3450
3451 /* Incremented every time we size stubs. */
3452 unsigned int stub_iteration;
5d1634d7 3453
ec338859
AM		 3454 /* Small local sym to section mapping cache. */
3455 struct sym_sec_cache sym_sec;
65f38f15
AM		 3456};
3457
4c52953f
AM		 3458/* Rename some of the generic section flags to better document how they
3459 are used here. */
3460#define has_toc_reloc has_gp_reloc
3461#define makes_toc_func_call need_finalize_relax
3462#define call_check_in_progress reloc_done
3463
65f38f15
AM		 3464/* Get the ppc64 ELF linker hash table from a link_info structure. */
3465
3466#define ppc_hash_table(p) \
3467 ((struct ppc_link_hash_table *) ((p)->hash))
3468
721956f4
AM		 3469#define ppc_stub_hash_lookup(table, string, create, copy) \
3470 ((struct ppc_stub_hash_entry *) \
3471 bfd_hash_lookup ((table), (string), (create), (copy)))
3472
3473#define ppc_branch_hash_lookup(table, string, create, copy) \
3474 ((struct ppc_branch_hash_entry *) \
3475 bfd_hash_lookup ((table), (string), (create), (copy)))
3476
3477/* Create an entry in the stub hash table. */
3478
3479static struct bfd_hash_entry *
4ce794b7
AM		 3480stub_hash_newfunc (struct bfd_hash_entry *entry,
3481 struct bfd_hash_table *table,
3482 const char *string)
721956f4
AM		 3483{
3484 /* Allocate the structure if it has not already been allocated by a
3485 subclass. */
3486 if (entry == NULL)
3487 {
3488 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3489 if (entry == NULL)
3490 return entry;
3491 }
3492
3493 /* Call the allocation method of the superclass. */
3494 entry = bfd_hash_newfunc (entry, table, string);
3495 if (entry != NULL)
3496 {
3497 struct ppc_stub_hash_entry *eh;
3498
3499 /* Initialize the local fields. */
3500 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3501 eh->stub_type = ppc_stub_none;
721956f4
AM		 3502 eh->stub_sec = NULL;
3503 eh->stub_offset = 0;
3504 eh->target_value = 0;
3505 eh->target_section = NULL;
721956f4
AM		 3506 eh->h = NULL;
3507 eh->id_sec = NULL;
3508 }
3509
3510 return entry;
3511}
3512
3513/* Create an entry in the branch hash table. */
3514
3515static struct bfd_hash_entry *
4ce794b7
AM		 3516branch_hash_newfunc (struct bfd_hash_entry *entry,
3517 struct bfd_hash_table *table,
3518 const char *string)
721956f4
AM		 3519{
3520 /* Allocate the structure if it has not already been allocated by a
3521 subclass. */
3522 if (entry == NULL)
3523 {
3524 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3525 if (entry == NULL)
3526 return entry;
3527 }
3528
3529 /* Call the allocation method of the superclass. */
3530 entry = bfd_hash_newfunc (entry, table, string);
3531 if (entry != NULL)
3532 {
3533 struct ppc_branch_hash_entry *eh;
3534
3535 /* Initialize the local fields. */
3536 eh = (struct ppc_branch_hash_entry *) entry;
3537 eh->offset = 0;
3538 eh->iter = 0;
3539 }
3540
3541 return entry;
3542}
3543
65f38f15
AM		 3544/* Create an entry in a ppc64 ELF linker hash table. */
3545
3546static struct bfd_hash_entry *
4ce794b7
AM		 3547link_hash_newfunc (struct bfd_hash_entry *entry,
3548 struct bfd_hash_table *table,
3549 const char *string)
65f38f15
AM		 3550{
3551 /* Allocate the structure if it has not already been allocated by a
3552 subclass. */
3553 if (entry == NULL)
3554 {
3555 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3556 if (entry == NULL)
3557 return entry;
3558 }
3559
3560 /* Call the allocation method of the superclass. */
3561 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3562 if (entry != NULL)
3563 {
3564 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3565
b3fac117 3566 memset (&eh->u.stub_cache, 0,
908b32fc 3567 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 3568 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3569
3570 /* When making function calls, old ABI code references function entry
3571 points (dot symbols), while new ABI code references the function
3572 descriptor symbol. We need to make any combination of reference and
3573 definition work together, without breaking archive linking.
3574
3575 For a defined function "foo" and an undefined call to "bar":
3576 An old object defines "foo" and ".foo", references ".bar" (possibly
3577 "bar" too).
3578 A new object defines "foo" and references "bar".
3579
3580 A new object thus has no problem with its undefined symbols being
3581 satisfied by definitions in an old object. On the other hand, the
3582 old object won't have ".bar" satisfied by a new object.
3583
3584 Keep a list of newly added dot-symbols. */
3585
3586 if (string[0] == '.')
3587 {
3588 struct ppc_link_hash_table *htab;
3589
3590 htab = (struct ppc_link_hash_table *) table;
3591 eh->u.next_dot_sym = htab->dot_syms;
3592 htab->dot_syms = eh;
3593 }
65f38f15
AM		 3594 }
3595
3596 return entry;
3597}
3598
3599/* Create a ppc64 ELF linker hash table. */
3600
3601static struct bfd_link_hash_table *
4ce794b7 3602ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3603{
3604 struct ppc_link_hash_table *htab;
3605 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3606
4ce794b7 3607 htab = bfd_zmalloc (amt);
65f38f15
AM		 3608 if (htab == NULL)
3609 return NULL;
3610
66eb6687
AM		 3611 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3612 sizeof (struct ppc_link_hash_entry)))
65f38f15 3613 {
e2d34d7d 3614 free (htab);
65f38f15
AM		 3615 return NULL;
3616 }
3617
721956f4 3618 /* Init the stub hash table too. */
66eb6687
AM		 3619 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3620 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM		 3621 return NULL;
3622
3623 /* And the branch hash table. */
66eb6687
AM		 3624 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3625 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM		 3626 return NULL;
3627
3254fd24
AM		 3628 /* Initializing two fields of the union is just cosmetic. We really
3629 only care about glist, but when compiled on a 32-bit host the
3630 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3631 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3632 htab->elf.init_got_refcount.refcount = 0;
3633 htab->elf.init_got_refcount.glist = NULL;
3634 htab->elf.init_plt_refcount.refcount = 0;
3635 htab->elf.init_plt_refcount.glist = NULL;
3636 htab->elf.init_got_offset.offset = 0;
3637 htab->elf.init_got_offset.glist = NULL;
3638 htab->elf.init_plt_offset.offset = 0;
3639 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3640
65f38f15
AM		 3641 return &htab->elf.root;
3642}
3643
721956f4
AM		 3644/* Free the derived linker hash table. */
3645
3646static void
4ce794b7 3647ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3648{
3649 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3650
3651 bfd_hash_table_free (&ret->stub_hash_table);
3652 bfd_hash_table_free (&ret->branch_hash_table);
3653 _bfd_generic_link_hash_table_free (hash);
3654}
3655
e717da7e
AM		 3656/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3657
3658void
3659ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3660{
3661 struct ppc_link_hash_table *htab;
3662
3663 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3664
3665/* Always hook our dynamic sections into the first bfd, which is the
3666 linker created stub bfd. This ensures that the GOT header is at
3667 the start of the output TOC section. */
3668 htab = ppc_hash_table (info);
3669 htab->stub_bfd = abfd;
3670 htab->elf.dynobj = abfd;
3671}
3672
721956f4
AM		 3673/* Build a name for an entry in the stub hash table. */
3674
3675static char *
4ce794b7
AM		 3676ppc_stub_name (const asection *input_section,
3677 const asection *sym_sec,
3678 const struct ppc_link_hash_entry *h,
3679 const Elf_Internal_Rela *rel)
721956f4
AM		 3680{
3681 char *stub_name;
3682 bfd_size_type len;
3683
3684 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3685 offsets from a sym as a branch target? In fact, we could
3686 probably assume the addend is always zero. */
3687 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3688
3689 if (h)
3690 {
3691 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3692 stub_name = bfd_malloc (len);
46de2a7c
AM		 3693 if (stub_name == NULL)
3694 return stub_name;
3695
3696 sprintf (stub_name, "%08x.%s+%x",
3697 input_section->id & 0xffffffff,
3698 h->elf.root.root.string,
3699 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3700 }
3701 else
3702 {
ad8e1ba5 3703 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3704 stub_name = bfd_malloc (len);
46de2a7c
AM		 3705 if (stub_name == NULL)
3706 return stub_name;
3707
3708 sprintf (stub_name, "%08x.%x:%x+%x",
3709 input_section->id & 0xffffffff,
3710 sym_sec->id & 0xffffffff,
3711 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3712 (int) rel->r_addend & 0xffffffff);
721956f4 3713 }
ee75fd95
AM		 3714 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3715 stub_name[len - 2] = 0;
721956f4
AM		 3716 return stub_name;
3717}
3718
3719/* Look up an entry in the stub hash. Stub entries are cached because
3720 creating the stub name takes a bit of time. */
3721
3722static struct ppc_stub_hash_entry *
4ce794b7
AM		 3723ppc_get_stub_entry (const asection *input_section,
3724 const asection *sym_sec,
039b3fef 3725 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3726 const Elf_Internal_Rela *rel,
3727 struct ppc_link_hash_table *htab)
721956f4
AM		 3728{
3729 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3730 const asection *id_sec;
3731
3732 /* If this input section is part of a group of sections sharing one
3733 stub section, then use the id of the first section in the group.
3734 Stub names need to include a section id, as there may well be
3735 more than one stub used to reach say, printf, and we need to
3736 distinguish between them. */
3737 id_sec = htab->stub_group[input_section->id].link_sec;
3738
b3fac117
AM		 3739 if (h != NULL && h->u.stub_cache != NULL
3740 && h->u.stub_cache->h == h
3741 && h->u.stub_cache->id_sec == id_sec)
721956f4 3742 {
b3fac117 3743 stub_entry = h->u.stub_cache;
721956f4
AM		 3744 }
3745 else
3746 {
3747 char *stub_name;
3748
3749 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3750 if (stub_name == NULL)
3751 return NULL;
3752
3753 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3754 stub_name, FALSE, FALSE);
721956f4 3755 if (h != NULL)
b3fac117 3756 h->u.stub_cache = stub_entry;
721956f4
AM		 3757
3758 free (stub_name);
3759 }
3760
3761 return stub_entry;
3762}
3763
3764/* Add a new stub entry to the stub hash. Not all fields of the new
3765 stub entry are initialised. */
3766
3767static struct ppc_stub_hash_entry *
4ce794b7
AM		 3768ppc_add_stub (const char *stub_name,
3769 asection *section,
3770 struct ppc_link_hash_table *htab)
721956f4
AM		 3771{
3772 asection *link_sec;
3773 asection *stub_sec;
3774 struct ppc_stub_hash_entry *stub_entry;
3775
3776 link_sec = htab->stub_group[section->id].link_sec;
3777 stub_sec = htab->stub_group[section->id].stub_sec;
3778 if (stub_sec == NULL)
3779 {
3780 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3781 if (stub_sec == NULL)
3782 {
d4c88bbb 3783 size_t namelen;
721956f4
AM		 3784 bfd_size_type len;
3785 char *s_name;
3786
d4c88bbb
AM		 3787 namelen = strlen (link_sec->name);
3788 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3789 s_name = bfd_alloc (htab->stub_bfd, len);
3790 if (s_name == NULL)
3791 return NULL;
3792
d4c88bbb
AM		 3793 memcpy (s_name, link_sec->name, namelen);
3794 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3795 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3796 if (stub_sec == NULL)
3797 return NULL;
3798 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3799 }
3800 htab->stub_group[section->id].stub_sec = stub_sec;
3801 }
3802
3803 /* Enter this entry into the linker stub hash table. */
3804 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3805 TRUE, FALSE);
721956f4
AM		 3806 if (stub_entry == NULL)
3807 {
d003868e
AM		 3808 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3809 section->owner, stub_name);
721956f4
AM		 3810 return NULL;
3811 }
3812
3813 stub_entry->stub_sec = stub_sec;
3814 stub_entry->stub_offset = 0;
3815 stub_entry->id_sec = link_sec;
3816 return stub_entry;
3817}
3818
82bd7b59
AM		 3819/* Create sections for linker generated code. */
3820
b34976b6 3821static bfd_boolean
4ce794b7 3822create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3823{
3824 struct ppc_link_hash_table *htab;
3825 flagword flags;
3826
3827 htab = ppc_hash_table (info);
3828
3829 /* Create .sfpr for code to save and restore fp regs. */
3830 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3831 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3832 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3833 flags);
82bd7b59 3834 if (htab->sfpr == NULL
82bd7b59 3835 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3836 return FALSE;
82bd7b59 3837
721956f4 3838 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3839 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3840 flags);
4ce794b7 3841 if (htab->glink == NULL
ee4bf8d2 3842 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 3843 return FALSE;
82bd7b59 3844
c456f082 3845 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM		 3846 flags = (SEC_ALLOC | SEC_LOAD
3847 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3848 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3849 flags);
4ce794b7 3850 if (htab->brlt == NULL
4ce794b7 3851 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3852 return FALSE;
721956f4 3853
e4e0193e 3854 if (!info->shared)
c456f082
AM		 3855 return TRUE;
3856
e4e0193e
AM		 3857 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3858 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3859 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3860 ".rela.branch_lt",
3861 flags);
c456f082
AM		 3862 if (!htab->relbrlt
3863 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3864 return FALSE;
3865
b34976b6 3866 return TRUE;
82bd7b59
AM		 3867}
3868
e717da7e
AM		 3869/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3870 not already done. */
65f38f15 3871
b34976b6 3872static bfd_boolean
e717da7e 3873create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3874{
e717da7e
AM		 3875 asection *got, *relgot;
3876 flagword flags;
3877 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3878
4ce794b7 3879 if (!htab->got)
e717da7e
AM		 3880 {
3881 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3882 return FALSE;
3883
3884 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3885 if (!htab->got)
3886 abort ();
3887 }
3888
3889 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3890 | SEC_LINKER_CREATED);
3891
c456f082 3892 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3893 if (!got
e717da7e
AM		 3894 || !bfd_set_section_alignment (abfd, got, 3))
3895 return FALSE;
65f38f15 3896
c456f082
AM		 3897 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3898 flags | SEC_READONLY);
e717da7e 3899 if (!relgot
e717da7e 3900 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3901 return FALSE;
e717da7e
AM		 3902
3903 ppc64_elf_tdata (abfd)->got = got;
3904 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3905 return TRUE;
65f38f15 3906}
5bd4f169 3907
82bd7b59 3908/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3909
b34976b6 3910static bfd_boolean
4ce794b7 3911ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3912{
65f38f15 3913 struct ppc_link_hash_table *htab;
5bd4f169 3914
65f38f15 3915 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3916 return FALSE;
65f38f15 3917
e717da7e
AM		 3918 htab = ppc_hash_table (info);
3919 if (!htab->got)
3920 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3921 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3922 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3923 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3924 if (!info->shared)
4ce794b7 3925 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3926
e717da7e 3927 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3928 || (!info->shared && !htab->relbss))
65f38f15
AM		 3929 abort ();
3930
b34976b6 3931 return TRUE;
5bd4f169
AM		 3932}
3933
40d16e0b
AM		 3934/* Merge PLT info on FROM with that on TO. */
3935
3936static void
3937move_plt_plist (struct ppc_link_hash_entry *from,
3938 struct ppc_link_hash_entry *to)
3939{
3940 if (from->elf.plt.plist != NULL)
3941 {
3942 if (to->elf.plt.plist != NULL)
3943 {
3944 struct plt_entry **entp;
3945 struct plt_entry *ent;
3946
3947 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3948 {
3949 struct plt_entry *dent;
3950
3951 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3952 if (dent->addend == ent->addend)
3953 {
3954 dent->plt.refcount += ent->plt.refcount;
3955 *entp = ent->next;
3956 break;
3957 }
3958 if (dent == NULL)
3959 entp = &ent->next;
3960 }
3961 *entp = to->elf.plt.plist;
3962 }
3963
3964 to->elf.plt.plist = from->elf.plt.plist;
3965 from->elf.plt.plist = NULL;
3966 }
3967}
3968
65f38f15
AM		 3969/* Copy the extra info we tack onto an elf_link_hash_entry. */
3970
3971static void
fcfa13d2
AM		 3972ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3973 struct elf_link_hash_entry *dir,
3974 struct elf_link_hash_entry *ind)
65f38f15
AM		 3975{
3976 struct ppc_link_hash_entry *edir, *eind;
3977
3978 edir = (struct ppc_link_hash_entry *) dir;
3979 eind = (struct ppc_link_hash_entry *) ind;
3980
411e1bfb 3981 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3982 if (eind->dyn_relocs != NULL)
65f38f15 3983 {
bbd7ec4a
AM		 3984 if (edir->dyn_relocs != NULL)
3985 {
3986 struct ppc_dyn_relocs **pp;
3987 struct ppc_dyn_relocs *p;
3988
fcfa13d2 3989 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 3990 list. Merge any entries against the same section. */
3991 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3992 {
3993 struct ppc_dyn_relocs *q;
3994
3995 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3996 if (q->sec == p->sec)
3997 {
3998 q->pc_count += p->pc_count;
3999 q->count += p->count;
4000 *pp = p->next;
4001 break;
4002 }
4003 if (q == NULL)
4004 pp = &p->next;
4005 }
4006 *pp = edir->dyn_relocs;
4007 }
4008
65f38f15
AM		 4009 edir->dyn_relocs = eind->dyn_relocs;
4010 eind->dyn_relocs = NULL;
4011 }
65f38f15 4012
6349e628
AM		 4013 edir->is_func |= eind->is_func;
4014 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4015 edir->tls_mask |= eind->tls_mask;
6349e628 4016
81848ca0 4017 /* If called to transfer flags for a weakdef during processing
f5385ebf 4018 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4019 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 4020 if (!(ELIMINATE_COPY_RELOCS
4021 && eind->elf.root.type != bfd_link_hash_indirect
4022 && edir->elf.dynamic_adjusted))
4023 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4024
f5385ebf
AM		 4025 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4026 edir->elf.ref_regular |= eind->elf.ref_regular;
4027 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4028 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 4029
4030 /* If we were called to copy over info for a weak sym, that's all. */
4031 if (eind->elf.root.type != bfd_link_hash_indirect)
4032 return;
4033
81848ca0
AM		 4034 /* Copy over got entries that we may have already seen to the
4035 symbol which just became indirect. */
411e1bfb
AM		 4036 if (eind->elf.got.glist != NULL)
4037 {
4038 if (edir->elf.got.glist != NULL)
4039 {
4040 struct got_entry **entp;
4041 struct got_entry *ent;
4042
4043 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4044 {
4045 struct got_entry *dent;
4046
4047 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4048 if (dent->addend == ent->addend
e717da7e 4049 && dent->owner == ent->owner
411e1bfb
AM		 4050 && dent->tls_type == ent->tls_type)
4051 {
4052 dent->got.refcount += ent->got.refcount;
4053 *entp = ent->next;
4054 break;
4055 }
4056 if (dent == NULL)
4057 entp = &ent->next;
4058 }
4059 *entp = edir->elf.got.glist;
4060 }
4061
4062 edir->elf.got.glist = eind->elf.got.glist;
4063 eind->elf.got.glist = NULL;
4064 }
4065
4066 /* And plt entries. */
40d16e0b 4067 move_plt_plist (eind, edir);
411e1bfb 4068
fcfa13d2 4069 if (eind->elf.dynindx != -1)
411e1bfb 4070 {
fcfa13d2
AM		 4071 if (edir->elf.dynindx != -1)
4072 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4073 edir->elf.dynstr_index);
411e1bfb
AM		 4074 edir->elf.dynindx = eind->elf.dynindx;
4075 edir->elf.dynstr_index = eind->elf.dynstr_index;
4076 eind->elf.dynindx = -1;
4077 eind->elf.dynstr_index = 0;
4078 }
411e1bfb
AM		 4079}
4080
8387904d
AM		 4081/* Find the function descriptor hash entry from the given function code
4082 hash entry FH. Link the entries via their OH fields. */
4083
4084static struct ppc_link_hash_entry *
4085get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4086{
4087 struct ppc_link_hash_entry *fdh = fh->oh;
4088
4089 if (fdh == NULL)
4090 {
4091 const char *fd_name = fh->elf.root.root.string + 1;
4092
4093 fdh = (struct ppc_link_hash_entry *)
4094 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4095 if (fdh != NULL)
4096 {
4097 fdh->is_func_descriptor = 1;
4098 fdh->oh = fh;
4099 fh->is_func = 1;
4100 fh->oh = fdh;
4101 }
4102 }
4103
4104 return fdh;
4105}
4106
bb700d78
AM		 4107/* Make a fake function descriptor sym for the code sym FH. */
4108
4109static struct ppc_link_hash_entry *
4110make_fdh (struct bfd_link_info *info,
908b32fc 4111 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4112{
4113 bfd *abfd;
4114 asymbol *newsym;
4115 struct bfd_link_hash_entry *bh;
4116 struct ppc_link_hash_entry *fdh;
4117
4118 abfd = fh->elf.root.u.undef.abfd;
4119 newsym = bfd_make_empty_symbol (abfd);
4120 newsym->name = fh->elf.root.root.string + 1;
4121 newsym->section = bfd_und_section_ptr;
4122 newsym->value = 0;
908b32fc 4123 newsym->flags = BSF_WEAK;
bb700d78
AM		 4124
4125 bh = NULL;
4126 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4127 newsym->flags, newsym->section,
4128 newsym->value, NULL, FALSE, FALSE,
4129 &bh))
4130 return NULL;
4131
4132 fdh = (struct ppc_link_hash_entry *) bh;
4133 fdh->elf.non_elf = 0;
908b32fc
AM		 4134 fdh->fake = 1;
4135 fdh->is_func_descriptor = 1;
4136 fdh->oh = fh;
4137 fh->is_func = 1;
4138 fh->oh = fdh;
bb700d78
AM		 4139 return fdh;
4140}
4141
8387904d
AM		 4142/* Fix function descriptor symbols defined in .opd sections to be
4143 function type. */
555cd476
AM		 4144
4145static bfd_boolean
b3fac117 4146ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM		 4147 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4148 Elf_Internal_Sym *isym,
b3fac117 4149 const char **name ATTRIBUTE_UNUSED,
555cd476
AM		 4150 flagword *flags ATTRIBUTE_UNUSED,
4151 asection **sec,
4152 bfd_vma *value ATTRIBUTE_UNUSED)
4153{
8843416a
AM		 4154 if (*sec != NULL
4155 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4156 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4157
555cd476
AM		 4158 return TRUE;
4159}
4160
8387904d 4161/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4162 inclusion of a new ABI object archive that defines "bar".
4163 NAME is a symbol defined in an archive. Return a symbol in the hash
4164 table that might be satisfied by the archive symbols. */
8387904d
AM		 4165
4166static struct elf_link_hash_entry *
4167ppc64_elf_archive_symbol_lookup (bfd *abfd,
4168 struct bfd_link_info *info,
4169 const char *name)
4170{
4171 struct elf_link_hash_entry *h;
4172 char *dot_name;
4173 size_t len;
4174
4175 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4176 if (h != NULL
4177 /* Don't return this sym if it is a fake function descriptor
4178 created by add_symbol_adjust. */
4179 && !(h->root.type == bfd_link_hash_undefweak
4180 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4181 return h;
4182
4183 if (name[0] == '.')
4184 return h;
4185
4186 len = strlen (name);
4187 dot_name = bfd_alloc (abfd, len + 2);
4188 if (dot_name == NULL)
4189 return (struct elf_link_hash_entry *) 0 - 1;
4190 dot_name[0] = '.';
4191 memcpy (dot_name + 1, name, len + 1);
4192 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4193 bfd_release (abfd, dot_name);
4194 return h;
4195}
4196
4197/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4198 new ABI object defines "bar". Well, at least, undefined dot symbols
4199 are made weak. This stops later archive searches from including an
4200 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4201 prevents the linker complaining about undefined symbols.
4202 We also check and correct mismatched symbol visibility here. The
4203 most restrictive visibility of the function descriptor and the
4204 function entry symbol is used. */
8387904d
AM		 4205
4206static bfd_boolean
b3fac117 4207add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4208{
8387904d
AM		 4209 struct ppc_link_hash_table *htab;
4210 struct ppc_link_hash_entry *fdh;
4211
b3fac117 4212 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4213 return TRUE;
4214
b3fac117
AM		 4215 if (eh->elf.root.type == bfd_link_hash_warning)
4216 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4217
b3fac117
AM		 4218 if (eh->elf.root.root.string[0] != '.')
4219 abort ();
8387904d 4220
b3fac117 4221 htab = ppc_hash_table (info);
99877b66 4222 fdh = get_fdh (eh, htab);
bb700d78 4223 if (fdh == NULL
b3fac117 4224 && !info->relocatable
bb700d78
AM		 4225 && (eh->elf.root.type == bfd_link_hash_undefined
4226 || eh->elf.root.type == bfd_link_hash_undefweak)
4227 && eh->elf.ref_regular)
4228 {
4229 /* Make an undefweak function descriptor sym, which is enough to
4230 pull in an --as-needed shared lib, but won't cause link
4231 errors. Archives are handled elsewhere. */
b3fac117 4232 fdh = make_fdh (info, eh);
bb700d78 4233 if (fdh == NULL)
b3fac117 4234 return FALSE;
bb700d78
AM		 4235 else
4236 fdh->elf.ref_regular = 1;
4237 }
e87d886e 4238 else if (fdh != NULL)
8387904d 4239 {
35b0ce59
AM		 4240 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4241 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4242 if (entry_vis < descr_vis)
4243 fdh->elf.other += entry_vis - descr_vis;
4244 else if (entry_vis > descr_vis)
4245 eh->elf.other += descr_vis - entry_vis;
4246
e87d886e
AM		 4247 if ((fdh->elf.root.type == bfd_link_hash_defined
4248 || fdh->elf.root.type == bfd_link_hash_defweak)
4249 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4250 {
4251 eh->elf.root.type = bfd_link_hash_undefweak;
4252 eh->was_undefined = 1;
4253 htab->twiddled_syms = 1;
4254 }
8387904d 4255 }
99877b66 4256
8387904d
AM		 4257 return TRUE;
4258}
4259
b3fac117
AM		 4260/* Process list of dot-symbols we made in link_hash_newfunc. */
4261
8387904d 4262static bfd_boolean
b3fac117 4263ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4264{
99877b66 4265 struct ppc_link_hash_table *htab;
b3fac117 4266 struct ppc_link_hash_entry **p, *eh;
433817dd 4267
99877b66 4268 htab = ppc_hash_table (info);
ee75fd95 4269 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4270 return TRUE;
4271
b3fac117
AM		 4272 if (is_ppc64_elf_target (ibfd->xvec))
4273 {
4274 p = &htab->dot_syms;
4275 while ((eh = *p) != NULL)
4276 {
4277 *p = NULL;
4278 if (!add_symbol_adjust (eh, info))
4279 return FALSE;
4280 p = &eh->u.next_dot_sym;
4281 }
4282 }
4283
4284 /* Clear the list for non-ppc64 input files. */
4285 p = &htab->dot_syms;
4286 while ((eh = *p) != NULL)
4287 {
4288 *p = NULL;
4289 p = &eh->u.next_dot_sym;
4290 }
99877b66
AM		 4291
4292 /* We need to fix the undefs list for any syms we have twiddled to
4293 undef_weak. */
4294 if (htab->twiddled_syms)
4295 {
77cfaee6 4296 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4297 htab->twiddled_syms = 0;
4298 }
b3fac117 4299 return TRUE;
8387904d
AM		 4300}
4301
97fed1c9
JJ		 4302/* Undo hash table changes when an --as-needed input file is determined
4303 not to be needed. */
4304
4305static bfd_boolean
4306ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4307 struct bfd_link_info *info)
4308{
4309 ppc_hash_table (info)->dot_syms = NULL;
4310 return TRUE;
4311}
4312
411e1bfb 4313static bfd_boolean
4ce794b7
AM		 4314update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4315 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4316{
4317 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4318 char *local_got_tls_masks;
411e1bfb
AM		 4319
4320 if (local_got_ents == NULL)
4321 {
4322 bfd_size_type size = symtab_hdr->sh_info;
4323
e7b938ca 4324 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4325 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4326 if (local_got_ents == NULL)
4327 return FALSE;
4328 elf_local_got_ents (abfd) = local_got_ents;
4329 }
4330
4331 if ((tls_type & TLS_EXPLICIT) == 0)
4332 {
4333 struct got_entry *ent;
4334
4335 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4336 if (ent->addend == r_addend
4337 && ent->owner == abfd
4338 && ent->tls_type == tls_type)
411e1bfb
AM		 4339 break;
4340 if (ent == NULL)
4341 {
4342 bfd_size_type amt = sizeof (*ent);
4ce794b7 4343 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4344 if (ent == NULL)
4345 return FALSE;
4346 ent->next = local_got_ents[r_symndx];
4347 ent->addend = r_addend;
e717da7e 4348 ent->owner = abfd;
411e1bfb
AM		 4349 ent->tls_type = tls_type;
4350 ent->got.refcount = 0;
4351 local_got_ents[r_symndx] = ent;
4352 }
4353 ent->got.refcount += 1;
4354 }
4355
e7b938ca
AM		 4356 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4357 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4358 return TRUE;
65f38f15
AM		 4359}
4360
411e1bfb 4361static bfd_boolean
4ce794b7 4362update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4363{
411e1bfb 4364 struct plt_entry *ent;
1e2f5b6e 4365
411e1bfb
AM		 4366 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4367 if (ent->addend == addend)
4368 break;
4369 if (ent == NULL)
1e2f5b6e 4370 {
411e1bfb 4371 bfd_size_type amt = sizeof (*ent);
4ce794b7 4372 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4373 if (ent == NULL)
4374 return FALSE;
4375 ent->next = eh->elf.plt.plist;
4376 ent->addend = addend;
4377 ent->plt.refcount = 0;
4378 eh->elf.plt.plist = ent;
1e2f5b6e 4379 }
411e1bfb 4380 ent->plt.refcount += 1;
f5385ebf 4381 eh->elf.needs_plt = 1;
93f3fa99
AM		 4382 if (eh->elf.root.root.string[0] == '.'
4383 && eh->elf.root.root.string[1] != '\0')
4384 eh->is_func = 1;
b34976b6 4385 return TRUE;
1e2f5b6e
AM		 4386}
4387
5bd4f169 4388/* Look through the relocs for a section during the first phase, and
65f38f15 4389 calculate needed space in the global offset table, procedure
5d1634d7 4390 linkage table, and dynamic reloc sections. */
5bd4f169 4391
b34976b6 4392static bfd_boolean
4ce794b7
AM		 4393ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4394 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4395{
65f38f15 4396 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4397 Elf_Internal_Shdr *symtab_hdr;
4398 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4399 const Elf_Internal_Rela *rel;
4400 const Elf_Internal_Rela *rel_end;
5bd4f169 4401 asection *sreloc;
1e2f5b6e 4402 asection **opd_sym_map;
5bd4f169 4403
1049f94e 4404 if (info->relocatable)
b34976b6 4405 return TRUE;
5bd4f169 4406
680a3378
AM		 4407 /* Don't do anything special with non-loaded, non-alloced sections.
4408 In particular, any relocs in such sections should not affect GOT
4409 and PLT reference counting (ie. we don't allow them to create GOT
4410 or PLT entries), there's no possibility or desire to optimize TLS
4411 relocs, and there's not much point in propagating relocs to shared
4412 libs that the dynamic linker won't relocate. */
4413 if ((sec->flags & SEC_ALLOC) == 0)
4414 return TRUE;
4415
65f38f15 4416 htab = ppc_hash_table (info);
5bd4f169 4417 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4418
4419 sym_hashes = elf_sym_hashes (abfd);
4420 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4421 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4422 - symtab_hdr->sh_info);
5bd4f169
AM		 4423
4424 sreloc = NULL;
1e2f5b6e
AM		 4425 opd_sym_map = NULL;
4426 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4427 {
4428 /* Garbage collection needs some extra help with .opd sections.
4429 We don't want to necessarily keep everything referenced by
4430 relocs in .opd, as that would keep all functions. Instead,
4431 if we reference an .opd symbol (a function descriptor), we
4432 want to keep the function code symbol's section. This is
4433 easy for global symbols, but for local syms we need to keep
4434 information about the associated function section. Later, if
4435 edit_opd deletes entries, we'll use this array to adjust
4436 local syms in .opd. */
4437 union opd_info {
4438 asection *func_section;
4439 long entry_adjust;
4440 };
4441 bfd_size_type amt;
4442
3f764659 4443 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4444 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4445 if (opd_sym_map == NULL)
b34976b6 4446 return FALSE;
7c8fe5c4
AM		 4447 ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map;
4448 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4449 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4450 }
5bd4f169 4451
82bd7b59
AM		 4452 if (htab->sfpr == NULL
4453 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4454 return FALSE;
82bd7b59 4455
5bd4f169
AM		 4456 rel_end = relocs + sec->reloc_count;
4457 for (rel = relocs; rel < rel_end; rel++)
4458 {
4459 unsigned long r_symndx;
4460 struct elf_link_hash_entry *h;
04c9666a 4461 enum elf_ppc64_reloc_type r_type;
411e1bfb 4462 int tls_type = 0;
7c8fe5c4 4463 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM		 4464
4465 r_symndx = ELF64_R_SYM (rel->r_info);
4466 if (r_symndx < symtab_hdr->sh_info)
4467 h = NULL;
4468 else
973a3492
L		 4469 {
4470 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4471 while (h->root.type == bfd_link_hash_indirect
4472 || h->root.type == bfd_link_hash_warning)
4473 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4474 }
5bd4f169 4475
4ce794b7 4476 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4477 switch (r_type)
5bd4f169 4478 {
411e1bfb
AM		 4479 case R_PPC64_GOT_TLSLD16:
4480 case R_PPC64_GOT_TLSLD16_LO:
4481 case R_PPC64_GOT_TLSLD16_HI:
4482 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4483 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4484 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4485 goto dogottls;
4486
4487 case R_PPC64_GOT_TLSGD16:
4488 case R_PPC64_GOT_TLSGD16_LO:
4489 case R_PPC64_GOT_TLSGD16_HI:
4490 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4491 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4492 goto dogottls;
4493
4494 case R_PPC64_GOT_TPREL16_DS:
4495 case R_PPC64_GOT_TPREL16_LO_DS:
4496 case R_PPC64_GOT_TPREL16_HI:
4497 case R_PPC64_GOT_TPREL16_HA:
4498 if (info->shared)
4499 info->flags |= DF_STATIC_TLS;
4500 tls_type = TLS_TLS | TLS_TPREL;
4501 goto dogottls;
4502
4503 case R_PPC64_GOT_DTPREL16_DS:
4504 case R_PPC64_GOT_DTPREL16_LO_DS:
4505 case R_PPC64_GOT_DTPREL16_HI:
4506 case R_PPC64_GOT_DTPREL16_HA:
4507 tls_type = TLS_TLS | TLS_DTPREL;
4508 dogottls:
4509 sec->has_tls_reloc = 1;
4510 /* Fall thru */
4511
5bd4f169 4512 case R_PPC64_GOT16:
5bd4f169 4513 case R_PPC64_GOT16_DS:
65f38f15
AM		 4514 case R_PPC64_GOT16_HA:
4515 case R_PPC64_GOT16_HI:
4516 case R_PPC64_GOT16_LO:
5bd4f169 4517 case R_PPC64_GOT16_LO_DS:
65f38f15 4518 /* This symbol requires a global offset table entry. */
4c52953f 4519 sec->has_toc_reloc = 1;
e717da7e
AM		 4520 if (ppc64_elf_tdata (abfd)->got == NULL
4521 && !create_got_section (abfd, info))
b34976b6 4522 return FALSE;
5bd4f169
AM		 4523
4524 if (h != NULL)
4525 {
411e1bfb
AM		 4526 struct ppc_link_hash_entry *eh;
4527 struct got_entry *ent;
65f38f15 4528
411e1bfb
AM		 4529 eh = (struct ppc_link_hash_entry *) h;
4530 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4531 if (ent->addend == rel->r_addend
e717da7e 4532 && ent->owner == abfd
411e1bfb
AM		 4533 && ent->tls_type == tls_type)
4534 break;
4535 if (ent == NULL)
5bd4f169 4536 {
411e1bfb 4537 bfd_size_type amt = sizeof (*ent);
4ce794b7 4538 ent = bfd_alloc (abfd, amt);
411e1bfb 4539 if (ent == NULL)
b34976b6 4540 return FALSE;
411e1bfb
AM		 4541 ent->next = eh->elf.got.glist;
4542 ent->addend = rel->r_addend;
e717da7e 4543 ent->owner = abfd;
411e1bfb
AM		 4544 ent->tls_type = tls_type;
4545 ent->got.refcount = 0;
4546 eh->elf.got.glist = ent;
5bd4f169 4547 }
411e1bfb 4548 ent->got.refcount += 1;
e7b938ca 4549 eh->tls_mask |= tls_type;
5bd4f169 4550 }
411e1bfb
AM		 4551 else
4552 /* This is a global offset table entry for a local symbol. */
4553 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4554 rel->r_addend, tls_type))
4555 return FALSE;
5bd4f169
AM		 4556 break;
4557
5bd4f169 4558 case R_PPC64_PLT16_HA:
65f38f15
AM		 4559 case R_PPC64_PLT16_HI:
4560 case R_PPC64_PLT16_LO:
4561 case R_PPC64_PLT32:
4562 case R_PPC64_PLT64:
5bd4f169 4563 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4564 actually build the entry in adjust_dynamic_symbol,
4565 because this might be a case of linking PIC code without
4566 linking in any dynamic objects, in which case we don't
4567 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4568 if (h == NULL)
4569 {
4570 /* It does not make sense to have a procedure linkage
3fad3c7c 4571 table entry for a local symbol. */
5bd4f169 4572 bfd_set_error (bfd_error_bad_value);
b34976b6 4573 return FALSE;
5bd4f169 4574 }
411e1bfb
AM		 4575 else
4576 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4577 rel->r_addend))
4578 return FALSE;
5bd4f169
AM		 4579 break;
4580
4581 /* The following relocations don't need to propagate the
4582 relocation if linking a shared object since they are
4583 section relative. */
4584 case R_PPC64_SECTOFF:
4585 case R_PPC64_SECTOFF_LO:
4586 case R_PPC64_SECTOFF_HI:
4587 case R_PPC64_SECTOFF_HA:
4588 case R_PPC64_SECTOFF_DS:
4589 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4590 case R_PPC64_DTPREL16:
4591 case R_PPC64_DTPREL16_LO:
4592 case R_PPC64_DTPREL16_HI:
4593 case R_PPC64_DTPREL16_HA:
4594 case R_PPC64_DTPREL16_DS:
4595 case R_PPC64_DTPREL16_LO_DS:
4596 case R_PPC64_DTPREL16_HIGHER:
4597 case R_PPC64_DTPREL16_HIGHERA:
4598 case R_PPC64_DTPREL16_HIGHEST:
4599 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4600 break;
4601
ad8e1ba5
AM		 4602 /* Nor do these. */
4603 case R_PPC64_TOC16:
4604 case R_PPC64_TOC16_LO:
4605 case R_PPC64_TOC16_HI:
4606 case R_PPC64_TOC16_HA:
4607 case R_PPC64_TOC16_DS:
4608 case R_PPC64_TOC16_LO_DS:
4c52953f 4609 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4610 break;
4611
5bd4f169
AM		 4612 /* This relocation describes the C++ object vtable hierarchy.
4613 Reconstruct it for later use during GC. */
4614 case R_PPC64_GNU_VTINHERIT:
c152c796 4615 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4616 return FALSE;
5bd4f169
AM		 4617 break;
4618
4619 /* This relocation describes which C++ vtable entries are actually
4620 used. Record for later use during GC. */
4621 case R_PPC64_GNU_VTENTRY:
c152c796 4622 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4623 return FALSE;
5bd4f169
AM		 4624 break;
4625
721956f4
AM		 4626 case R_PPC64_REL14:
4627 case R_PPC64_REL14_BRTAKEN:
4628 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 4629 {
4630 asection *dest = NULL;
4631
4632 /* Heuristic: If jumping outside our section, chances are
4633 we are going to need a stub. */
4634 if (h != NULL)
4635 {
4636 /* If the sym is weak it may be overridden later, so
4637 don't assume we know where a weak sym lives. */
4638 if (h->root.type == bfd_link_hash_defined)
4639 dest = h->root.u.def.section;
4640 }
4641 else
4642 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4643 sec, r_symndx);
4644 if (dest != sec)
7c8fe5c4 4645 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4646 }
721956f4
AM		 4647 /* Fall through. */
4648
5d1634d7 4649 case R_PPC64_REL24:
8387904d 4650 if (h != NULL)
5d1634d7
AM		 4651 {
4652 /* We may need a .plt entry if the function this reloc
4653 refers to is in a shared lib. */
411e1bfb
AM		 4654 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4655 rel->r_addend))
4656 return FALSE;
8387904d
AM		 4657 if (h == &htab->tls_get_addr->elf
4658 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4659 sec->has_tls_reloc = 1;
8387904d 4660 else if (htab->tls_get_addr == NULL
0112cd26 4661 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM		 4662 && (h->root.root.string[15] == 0
4663 || h->root.root.string[15] == '@'))
411e1bfb 4664 {
8387904d
AM		 4665 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4666 sec->has_tls_reloc = 1;
4667 }
4668 else if (htab->tls_get_addr_fd == NULL
0112cd26 4669 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM		 4670 && (h->root.root.string[14] == 0
4671 || h->root.root.string[14] == '@'))
4672 {
4673 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4674 sec->has_tls_reloc = 1;
4675 }
4676 }
4677 break;
4678
4679 case R_PPC64_TPREL64:
4680 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4681 if (info->shared)
4682 info->flags |= DF_STATIC_TLS;
4683 goto dotlstoc;
4684
4685 case R_PPC64_DTPMOD64:
4686 if (rel + 1 < rel_end
4687 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4688 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4689 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4690 else
951fd09b 4691 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4692 goto dotlstoc;
4693
4694 case R_PPC64_DTPREL64:
4695 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4696 if (rel != relocs
4697 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4698 && rel[-1].r_offset == rel->r_offset - 8)
4699 /* This is the second reloc of a dtpmod, dtprel pair.
4700 Don't mark with TLS_DTPREL. */
4701 goto dodyn;
4702
4703 dotlstoc:
4704 sec->has_tls_reloc = 1;
4705 if (h != NULL)
4706 {
4707 struct ppc_link_hash_entry *eh;
4708 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4709 eh->tls_mask |= tls_type;
411e1bfb
AM		 4710 }
4711 else
4712 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4713 rel->r_addend, tls_type))
4714 return FALSE;
4715
7c8fe5c4
AM		 4716 ppc64_sec = ppc64_elf_section_data (sec);
4717 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4718 {
e7b938ca 4719 /* One extra to simplify get_tls_mask. */
eea6121a 4720 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM		 4721 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4722 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4723 return FALSE;
7c8fe5c4
AM		 4724 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4725 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 4726 }
4727 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4728 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4729
4730 /* Mark the second slot of a GD or LD entry.
4731 -1 to indicate GD and -2 to indicate LD. */
4732 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4733 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4734 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4735 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4736 goto dodyn;
4737
4738 case R_PPC64_TPREL16:
4739 case R_PPC64_TPREL16_LO:
4740 case R_PPC64_TPREL16_HI:
4741 case R_PPC64_TPREL16_HA:
4742 case R_PPC64_TPREL16_DS:
4743 case R_PPC64_TPREL16_LO_DS:
4744 case R_PPC64_TPREL16_HIGHER:
4745 case R_PPC64_TPREL16_HIGHERA:
4746 case R_PPC64_TPREL16_HIGHEST:
4747 case R_PPC64_TPREL16_HIGHESTA:
4748 if (info->shared)
4749 {
4750 info->flags |= DF_STATIC_TLS;
4751 goto dodyn;
5d1634d7
AM		 4752 }
4753 break;
4754
e86ce104 4755 case R_PPC64_ADDR64:
1e2f5b6e 4756 if (opd_sym_map != NULL
1e2f5b6e 4757 && rel + 1 < rel_end
4ce794b7 4758 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4759 {
8387904d
AM		 4760 if (h != NULL)
4761 {
4762 if (h->root.root.string[0] == '.'
4763 && h->root.root.string[1] != 0
4764 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4765 ;
4766 else
4767 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4768 }
4769 else
4770 {
4771 asection *s;
1e2f5b6e 4772
8387904d
AM		 4773 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4774 r_symndx);
4775 if (s == NULL)
4776 return FALSE;
4777 else if (s != sec)
3f764659 4778 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4779 }
1e2f5b6e 4780 }
e86ce104
AM		 4781 /* Fall through. */
4782
04c9666a 4783 case R_PPC64_REL30:
5bd4f169 4784 case R_PPC64_REL32:
04c9666a 4785 case R_PPC64_REL64:
65f38f15
AM		 4786 case R_PPC64_ADDR14:
4787 case R_PPC64_ADDR14_BRNTAKEN:
4788 case R_PPC64_ADDR14_BRTAKEN:
4789 case R_PPC64_ADDR16:
4790 case R_PPC64_ADDR16_DS:
4791 case R_PPC64_ADDR16_HA:
4792 case R_PPC64_ADDR16_HI:
4793 case R_PPC64_ADDR16_HIGHER:
4794 case R_PPC64_ADDR16_HIGHERA:
4795 case R_PPC64_ADDR16_HIGHEST:
4796 case R_PPC64_ADDR16_HIGHESTA:
4797 case R_PPC64_ADDR16_LO:
4798 case R_PPC64_ADDR16_LO_DS:
4799 case R_PPC64_ADDR24:
65f38f15 4800 case R_PPC64_ADDR32:
65f38f15
AM		 4801 case R_PPC64_UADDR16:
4802 case R_PPC64_UADDR32:
4803 case R_PPC64_UADDR64:
5bd4f169 4804 case R_PPC64_TOC:
81848ca0
AM		 4805 if (h != NULL && !info->shared)
4806 /* We may need a copy reloc. */
f5385ebf 4807 h->non_got_ref = 1;
81848ca0 4808
41bd81ab 4809 /* Don't propagate .opd relocs. */
1e2f5b6e 4810 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4811 break;
e86ce104 4812
65f38f15
AM		 4813 /* If we are creating a shared library, and this is a reloc
4814 against a global symbol, or a non PC relative reloc
4815 against a local symbol, then we need to copy the reloc
4816 into the shared library. However, if we are linking with
4817 -Bsymbolic, we do not need to copy a reloc against a
4818 global symbol which is defined in an object we are
4819 including in the link (i.e., DEF_REGULAR is set). At
4820 this point we have not seen all the input files, so it is
4821 possible that DEF_REGULAR is not set now but will be set
4822 later (it is never cleared). In case of a weak definition,
4823 DEF_REGULAR may be cleared later by a strong definition in
4824 a shared library. We account for that possibility below by
f4656909 4825 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4826 table entry. A similar situation occurs when creating
4827 shared libraries and symbol visibility changes render the
4828 symbol local.
4829
4830 If on the other hand, we are creating an executable, we
4831 may need to keep relocations for symbols satisfied by a
4832 dynamic library if we manage to avoid copy relocs for the
4833 symbol. */
411e1bfb 4834 dodyn:
65f38f15 4835 if ((info->shared
411e1bfb 4836 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4837 || (h != NULL
4838 && (! info->symbolic
4839 || h->root.type == bfd_link_hash_defweak
f5385ebf 4840 || !h->def_regular))))
f4656909
AM		 4841 || (ELIMINATE_COPY_RELOCS
4842 && !info->shared
65f38f15
AM		 4843 && h != NULL
4844 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4845 || !h->def_regular)))
5bd4f169 4846 {
ec338859
AM		 4847 struct ppc_dyn_relocs *p;
4848 struct ppc_dyn_relocs **head;
4849
65f38f15
AM		 4850 /* We must copy these reloc types into the output file.
4851 Create a reloc section in dynobj and make room for
4852 this reloc. */
5bd4f169
AM		 4853 if (sreloc == NULL)
4854 {
4855 const char *name;
65f38f15 4856 bfd *dynobj;
5bd4f169
AM		 4857
4858 name = (bfd_elf_string_from_elf_section
4859 (abfd,
4860 elf_elfheader (abfd)->e_shstrndx,
4861 elf_section_data (sec)->rel_hdr.sh_name));
4862 if (name == NULL)
b34976b6 4863 return FALSE;
5bd4f169 4864
0112cd26 4865 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM		 4866 || strcmp (bfd_get_section_name (abfd, sec),
4867 name + 5) != 0)
4868 {
4869 (*_bfd_error_handler)
d003868e
AM		 4870 (_("%B: bad relocation section name `%s\'"),
4871 abfd, name);
5d1634d7 4872 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4873 }
4874
65f38f15 4875 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4876 sreloc = bfd_get_section_by_name (dynobj, name);
4877 if (sreloc == NULL)
4878 {
4879 flagword flags;
4880
5bd4f169 4881 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4882 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4883 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4884 sreloc = bfd_make_section_with_flags (dynobj,
4885 name,
4886 flags);
5bd4f169 4887 if (sreloc == NULL
65f38f15 4888 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4889 return FALSE;
5bd4f169 4890 }
65f38f15 4891 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4892 }
4893
65f38f15
AM		 4894 /* If this is a global symbol, we count the number of
4895 relocations we need for this symbol. */
4896 if (h != NULL)
4897 {
ec338859 4898 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4899 }
4900 else
4901 {
ec338859
AM		 4902 /* Track dynamic relocs needed for local syms too.
4903 We really need local syms available to do this
4904 easily. Oh well. */
4905
4906 asection *s;
6edfbbad
DJ		 4907 void *vpp;
4908
ec338859
AM		 4909 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4910 sec, r_symndx);
4911 if (s == NULL)
b34976b6 4912 return FALSE;
ec338859 4913
6edfbbad
DJ		 4914 vpp = &elf_section_data (s)->local_dynrel;
4915 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 4916 }
ec338859
AM		 4917
4918 p = *head;
4919 if (p == NULL || p->sec != sec)
4920 {
4ce794b7 4921 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4922 if (p == NULL)
b34976b6 4923 return FALSE;
ec338859
AM		 4924 p->next = *head;
4925 *head = p;
4926 p->sec = sec;
4927 p->count = 0;
4928 p->pc_count = 0;
4929 }
4930
4931 p->count += 1;
411e1bfb 4932 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4933 p->pc_count += 1;
65f38f15 4934 }
5bd4f169 4935 break;
65f38f15
AM		 4936
4937 default:
96e0dda4 4938 break;
5bd4f169
AM		 4939 }
4940 }
4941
b34976b6 4942 return TRUE;
5bd4f169
AM		 4943}
4944
8387904d
AM		 4945/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4946 of the code entry point, and its section. */
4947
4948static bfd_vma
4949opd_entry_value (asection *opd_sec,
4950 bfd_vma offset,
4951 asection **code_sec,
4952 bfd_vma *code_off)
4953{
4954 bfd *opd_bfd = opd_sec->owner;
8860955f 4955 Elf_Internal_Rela *relocs;
8387904d 4956 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4957 bfd_vma val;
8387904d 4958
4b85d634
AM		 4959 /* No relocs implies we are linking a --just-symbols object. */
4960 if (opd_sec->reloc_count == 0)
4961 {
4962 bfd_vma val;
4963
4964 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4965 return (bfd_vma) -1;
3b36f7e6 4966
4b85d634
AM		 4967 if (code_sec != NULL)
4968 {
4969 asection *sec, *likely = NULL;
4970 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4971 if (sec->vma <= val
4972 && (sec->flags & SEC_LOAD) != 0
4973 && (sec->flags & SEC_ALLOC) != 0)
4974 likely = sec;
4975 if (likely != NULL)
4976 {
4977 *code_sec = likely;
4978 if (code_off != NULL)
4979 *code_off = val - likely->vma;
4980 }
4981 }
4982 return val;
4983 }
4984
8860955f
AM		 4985 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4986 if (relocs == NULL)
4987 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4988
8387904d 4989 /* Go find the opd reloc at the sym address. */
8860955f 4990 lo = relocs;
8387904d
AM		 4991 BFD_ASSERT (lo != NULL);
4992 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4993 val = (bfd_vma) -1;
8387904d
AM		 4994 while (lo < hi)
4995 {
4996 look = lo + (hi - lo) / 2;
4997 if (look->r_offset < offset)
4998 lo = look + 1;
4999 else if (look->r_offset > offset)
5000 hi = look;
5001 else
5002 {
5003 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
5004 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5005 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5006 {
5007 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5008 asection *sec;
5009
5010 if (symndx < symtab_hdr->sh_info)
5011 {
5012 Elf_Internal_Sym *sym;
5013
5014 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5015 if (sym == NULL)
5016 {
5017 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5018 symtab_hdr->sh_info,
5019 0, NULL, NULL, NULL);
5020 if (sym == NULL)
645ea6a9 5021 break;
8387904d
AM		 5022 symtab_hdr->contents = (bfd_byte *) sym;
5023 }
5024
5025 sym += symndx;
5026 val = sym->st_value;
5027 sec = NULL;
5028 if ((sym->st_shndx != SHN_UNDEF
5029 && sym->st_shndx < SHN_LORESERVE)
5030 || sym->st_shndx > SHN_HIRESERVE)
5031 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5032 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5033 }
5034 else
5035 {
5036 struct elf_link_hash_entry **sym_hashes;
5037 struct elf_link_hash_entry *rh;
5038
5039 sym_hashes = elf_sym_hashes (opd_bfd);
5040 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5041 while (rh->root.type == bfd_link_hash_indirect
5042 || rh->root.type == bfd_link_hash_warning)
5043 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5044 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5045 || rh->root.type == bfd_link_hash_defweak);
5046 val = rh->root.u.def.value;
5047 sec = rh->root.u.def.section;
5048 }
5049 val += look->r_addend;
5050 if (code_off != NULL)
5051 *code_off = val;
5052 if (code_sec != NULL)
5053 *code_sec = sec;
5054 if (sec != NULL && sec->output_section != NULL)
5055 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 5056 }
5057 break;
5058 }
5059 }
645ea6a9 5060
645ea6a9 5061 return val;
8387904d
AM		 5062}
5063
64d03ab5
AM		 5064/* Mark sections containing dynamically referenced symbols. When
5065 building shared libraries, we must assume that any visible symbol is
5066 referenced. */
5067
5068static bfd_boolean
5069ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5070{
5071 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5072 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5073
5074 if (eh->elf.root.type == bfd_link_hash_warning)
5075 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5076
5077 /* Dynamic linking info is on the func descriptor sym. */
5078 if (eh->oh != NULL
5079 && eh->oh->is_func_descriptor
5080 && (eh->oh->elf.root.type == bfd_link_hash_defined
5081 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5082 eh = eh->oh;
5083
5084 if ((eh->elf.root.type == bfd_link_hash_defined
5085 || eh->elf.root.type == bfd_link_hash_defweak)
5086 && (eh->elf.ref_dynamic
5087 || (!info->executable
5088 && eh->elf.def_regular
5089 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5090 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5091 {
5092 asection *code_sec;
5093
5094 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5095
5096 /* Function descriptor syms cause the associated
5097 function code sym section to be marked. */
5098 if (eh->is_func_descriptor
5099 && (eh->oh->elf.root.type == bfd_link_hash_defined
5100 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5101 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5102 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5103 && opd_entry_value (eh->elf.root.u.def.section,
5104 eh->elf.root.u.def.value,
5105 &code_sec, NULL) != (bfd_vma) -1)
5106 code_sec->flags |= SEC_KEEP;
5107 }
5108
5109 return TRUE;
5110}
5111
5bd4f169
AM		 5112/* Return the section that should be marked against GC for a given
5113 relocation. */
5114
5115static asection *
4ce794b7 5116ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 5117 struct bfd_link_info *info,
4ce794b7
AM		 5118 Elf_Internal_Rela *rel,
5119 struct elf_link_hash_entry *h,
5120 Elf_Internal_Sym *sym)
5bd4f169 5121{
ccfa59ea
AM		 5122 asection *rsec;
5123
5124 /* First mark all our entry sym sections. */
5125 if (info->gc_sym_list != NULL)
5126 {
5127 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5128 struct bfd_sym_chain *sym = info->gc_sym_list;
5129
5130 info->gc_sym_list = NULL;
b56cbdb9 5131 for (; sym != NULL; sym = sym->next)
ccfa59ea
AM		 5132 {
5133 struct ppc_link_hash_entry *eh;
5134
5135 eh = (struct ppc_link_hash_entry *)
5136 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5137 if (eh == NULL)
5138 continue;
5139 if (eh->elf.root.type != bfd_link_hash_defined
5140 && eh->elf.root.type != bfd_link_hash_defweak)
5141 continue;
5142
c4f68ce3
AM		 5143 if (eh->is_func_descriptor
5144 && (eh->oh->elf.root.type == bfd_link_hash_defined
5145 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5146 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 5147 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5148 && opd_entry_value (eh->elf.root.u.def.section,
5149 eh->elf.root.u.def.value,
5150 &rsec, NULL) != (bfd_vma) -1)
5151 ;
ccfa59ea
AM		 5152 else
5153 continue;
5154
5155 if (!rsec->gc_mark)
5156 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5157
5158 rsec = eh->elf.root.u.def.section;
5159 if (!rsec->gc_mark)
5160 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
ccfa59ea 5161 }
ccfa59ea
AM		 5162 }
5163
5164 /* Syms return NULL if we're marking .opd, so we avoid marking all
5165 function sections, as all functions are referenced in .opd. */
5166 rsec = NULL;
5167 if (get_opd_info (sec) != NULL)
5168 return rsec;
1e2f5b6e 5169
5bd4f169
AM		 5170 if (h != NULL)
5171 {
04c9666a 5172 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5173 struct ppc_link_hash_entry *eh;
a33d1f77 5174
4ce794b7 5175 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5176 switch (r_type)
5bd4f169
AM		 5177 {
5178 case R_PPC64_GNU_VTINHERIT:
5179 case R_PPC64_GNU_VTENTRY:
5180 break;
5181
5182 default:
5183 switch (h->root.type)
5184 {
5185 case bfd_link_hash_defined:
5186 case bfd_link_hash_defweak:
ccfa59ea 5187 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5188 if (eh->oh != NULL
5189 && eh->oh->is_func_descriptor
5190 && (eh->oh->elf.root.type == bfd_link_hash_defined
5191 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5192 eh = eh->oh;
1e2f5b6e
AM		 5193
5194 /* Function descriptor syms cause the associated
5195 function code sym section to be marked. */
c4f68ce3
AM		 5196 if (eh->is_func_descriptor
5197 && (eh->oh->elf.root.type == bfd_link_hash_defined
5198 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5199 {
5200 /* They also mark their opd section. */
5201 if (!eh->elf.root.u.def.section->gc_mark)
5202 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5203 ppc64_elf_gc_mark_hook);
5204
5205 rsec = eh->oh->elf.root.u.def.section;
5206 }
8387904d
AM		 5207 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5208 && opd_entry_value (eh->elf.root.u.def.section,
5209 eh->elf.root.u.def.value,
5210 &rsec, NULL) != (bfd_vma) -1)
5211 {
5212 if (!eh->elf.root.u.def.section->gc_mark)
5213 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5214 ppc64_elf_gc_mark_hook);
5215 }
ccfa59ea 5216 else
1e2f5b6e
AM		 5217 rsec = h->root.u.def.section;
5218 break;
5bd4f169
AM		 5219
5220 case bfd_link_hash_common:
1e2f5b6e
AM		 5221 rsec = h->root.u.c.p->section;
5222 break;
5bd4f169
AM		 5223
5224 default:
5225 break;
5226 }
5227 }
5228 }
5229 else
5230 {
1e2f5b6e
AM		 5231 asection **opd_sym_section;
5232
5233 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5234 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5235 if (opd_sym_section != NULL)
ccfa59ea
AM		 5236 {
5237 if (!rsec->gc_mark)
5238 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5239
b4f4e59f 5240 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5241 }
5bd4f169
AM		 5242 }
5243
1e2f5b6e 5244 return rsec;
5bd4f169
AM		 5245}
5246
65f38f15
AM		 5247/* Update the .got, .plt. and dynamic reloc reference counts for the
5248 section being removed. */
5bd4f169 5249
b34976b6 5250static bfd_boolean
4ce794b7
AM		 5251ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5252 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5253{
411e1bfb 5254 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5255 Elf_Internal_Shdr *symtab_hdr;
5256 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5257 struct got_entry **local_got_ents;
5bd4f169 5258 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5259
680a3378
AM		 5260 if ((sec->flags & SEC_ALLOC) == 0)
5261 return TRUE;
5262
ec338859
AM		 5263 elf_section_data (sec)->local_dynrel = NULL;
5264
411e1bfb 5265 htab = ppc_hash_table (info);
5bd4f169
AM		 5266 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5267 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5268 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5269
5270 relend = relocs + sec->reloc_count;
5271 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5272 {
5273 unsigned long r_symndx;
04c9666a 5274 enum elf_ppc64_reloc_type r_type;
58ac9f71 5275 struct elf_link_hash_entry *h = NULL;
411e1bfb 5276 char tls_type = 0;
5bd4f169 5277
a33d1f77 5278 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5279 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5280 if (r_symndx >= symtab_hdr->sh_info)
5281 {
5282 struct ppc_link_hash_entry *eh;
5283 struct ppc_dyn_relocs **pp;
5284 struct ppc_dyn_relocs *p;
5285
5286 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5287 while (h->root.type == bfd_link_hash_indirect
5288 || h->root.type == bfd_link_hash_warning)
5289 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5290 eh = (struct ppc_link_hash_entry *) h;
5291
5292 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5293 if (p->sec == sec)
5294 {
5295 /* Everything must go for SEC. */
5296 *pp = p->next;
5297 break;
5298 }
5299 }
5300
a33d1f77
AM		 5301 switch (r_type)
5302 {
411e1bfb
AM		 5303 case R_PPC64_GOT_TLSLD16:
5304 case R_PPC64_GOT_TLSLD16_LO:
5305 case R_PPC64_GOT_TLSLD16_HI:
5306 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5307 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5308 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5309 goto dogot;
5310
5311 case R_PPC64_GOT_TLSGD16:
5312 case R_PPC64_GOT_TLSGD16_LO:
5313 case R_PPC64_GOT_TLSGD16_HI:
5314 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5315 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5316 goto dogot;
5317
5318 case R_PPC64_GOT_TPREL16_DS:
5319 case R_PPC64_GOT_TPREL16_LO_DS:
5320 case R_PPC64_GOT_TPREL16_HI:
5321 case R_PPC64_GOT_TPREL16_HA:
5322 tls_type = TLS_TLS | TLS_TPREL;
5323 goto dogot;
5324
5325 case R_PPC64_GOT_DTPREL16_DS:
5326 case R_PPC64_GOT_DTPREL16_LO_DS:
5327 case R_PPC64_GOT_DTPREL16_HI:
5328 case R_PPC64_GOT_DTPREL16_HA:
5329 tls_type = TLS_TLS | TLS_DTPREL;
5330 goto dogot;
5331
a33d1f77
AM		 5332 case R_PPC64_GOT16:
5333 case R_PPC64_GOT16_DS:
5334 case R_PPC64_GOT16_HA:
5335 case R_PPC64_GOT16_HI:
5336 case R_PPC64_GOT16_LO:
5337 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5338 dogot:
5339 {
5340 struct got_entry *ent;
5341
58ac9f71
AM		 5342 if (h != NULL)
5343 ent = h->got.glist;
411e1bfb
AM		 5344 else
5345 ent = local_got_ents[r_symndx];
5346
5347 for (; ent != NULL; ent = ent->next)
5348 if (ent->addend == rel->r_addend
e717da7e 5349 && ent->owner == abfd
411e1bfb
AM		 5350 && ent->tls_type == tls_type)
5351 break;
5352 if (ent == NULL)
5353 abort ();
5354 if (ent->got.refcount > 0)
5355 ent->got.refcount -= 1;
5356 }
a33d1f77 5357 break;
65f38f15 5358
a33d1f77
AM		 5359 case R_PPC64_PLT16_HA:
5360 case R_PPC64_PLT16_HI:
5361 case R_PPC64_PLT16_LO:
5362 case R_PPC64_PLT32:
5363 case R_PPC64_PLT64:
721956f4
AM		 5364 case R_PPC64_REL14:
5365 case R_PPC64_REL14_BRNTAKEN:
5366 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5367 case R_PPC64_REL24:
58ac9f71 5368 if (h != NULL)
5d1634d7 5369 {
411e1bfb
AM		 5370 struct plt_entry *ent;
5371
411e1bfb
AM		 5372 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5373 if (ent->addend == rel->r_addend)
5374 break;
5375 if (ent == NULL)
5376 abort ();
5377 if (ent->plt.refcount > 0)
5378 ent->plt.refcount -= 1;
5d1634d7 5379 }
e86ce104 5380 break;
5d1634d7 5381
a33d1f77
AM		 5382 default:
5383 break;
5384 }
5385 }
b34976b6 5386 return TRUE;
5bd4f169
AM		 5387}
5388
deb0e272
AM		 5389/* The maximum size of .sfpr. */
5390#define SFPR_MAX (218*4)
5391
5392struct sfpr_def_parms
5393{
699733f6
AM		 5394 const char name[12];
5395 unsigned char lo, hi;
deb0e272
AM		 5396 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5397 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5398};
5399
5400/* Auto-generate _save*, _rest* functions in .sfpr. */
5401
5402static unsigned int
5403sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5404{
5405 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5406 unsigned int i;
5407 size_t len = strlen (parm->name);
5408 bfd_boolean writing = FALSE;
699733f6 5409 char sym[16];
deb0e272
AM		 5410
5411 memcpy (sym, parm->name, len);
5412 sym[len + 2] = 0;
5413
5414 for (i = parm->lo; i <= parm->hi; i++)
5415 {
5416 struct elf_link_hash_entry *h;
5417
5418 sym[len + 0] = i / 10 + '0';
5419 sym[len + 1] = i % 10 + '0';
5420 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5421 if (h != NULL
f5385ebf 5422 && !h->def_regular)
deb0e272
AM		 5423 {
5424 h->root.type = bfd_link_hash_defined;
5425 h->root.u.def.section = htab->sfpr;
5426 h->root.u.def.value = htab->sfpr->size;
5427 h->type = STT_FUNC;
f5385ebf 5428 h->def_regular = 1;
deb0e272
AM		 5429 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5430 writing = TRUE;
5431 if (htab->sfpr->contents == NULL)
5432 {
5433 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5434 if (htab->sfpr->contents == NULL)
5435 return FALSE;
5436 }
5437 }
5438 if (writing)
5439 {
5440 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5441 if (i != parm->hi)
5442 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5443 else
5444 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5445 htab->sfpr->size = p - htab->sfpr->contents;
5446 }
5447 }
5448
5449 return TRUE;
5450}
5451
5452static bfd_byte *
5453savegpr0 (bfd *abfd, bfd_byte *p, int r)
5454{
5455 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5456 return p + 4;
5457}
5458
5459static bfd_byte *
5460savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5461{
5462 p = savegpr0 (abfd, p, r);
5463 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5464 p = p + 4;
5465 bfd_put_32 (abfd, BLR, p);
5466 return p + 4;
5467}
5468
5469static bfd_byte *
5470restgpr0 (bfd *abfd, bfd_byte *p, int r)
5471{
5472 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5473 return p + 4;
5474}
5475
5476static bfd_byte *
5477restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5478{
5479 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5480 p = p + 4;
5481 p = restgpr0 (abfd, p, r);
5482 bfd_put_32 (abfd, MTLR_R0, p);
5483 p = p + 4;
5484 if (r == 29)
5485 {
5486 p = restgpr0 (abfd, p, 30);
5487 p = restgpr0 (abfd, p, 31);
5488 }
5489 bfd_put_32 (abfd, BLR, p);
5490 return p + 4;
5491}
5492
5493static bfd_byte *
5494savegpr1 (bfd *abfd, bfd_byte *p, int r)
5495{
5496 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5497 return p + 4;
5498}
5499
5500static bfd_byte *
5501savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5502{
5503 p = savegpr1 (abfd, p, r);
5504 bfd_put_32 (abfd, BLR, p);
5505 return p + 4;
5506}
5507
5508static bfd_byte *
5509restgpr1 (bfd *abfd, bfd_byte *p, int r)
5510{
5511 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5512 return p + 4;
5513}
5514
5515static bfd_byte *
5516restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5517{
5518 p = restgpr1 (abfd, p, r);
5519 bfd_put_32 (abfd, BLR, p);
5520 return p + 4;
5521}
5522
5523static bfd_byte *
5524savefpr (bfd *abfd, bfd_byte *p, int r)
5525{
5526 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5527 return p + 4;
5528}
5529
5530static bfd_byte *
5531savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5532{
5533 p = savefpr (abfd, p, r);
5534 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5535 p = p + 4;
5536 bfd_put_32 (abfd, BLR, p);
5537 return p + 4;
5538}
5539
5540static bfd_byte *
5541restfpr (bfd *abfd, bfd_byte *p, int r)
5542{
5543 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5544 return p + 4;
5545}
5546
5547static bfd_byte *
5548restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5549{
5550 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5551 p = p + 4;
5552 p = restfpr (abfd, p, r);
5553 bfd_put_32 (abfd, MTLR_R0, p);
5554 p = p + 4;
5555 if (r == 29)
5556 {
5557 p = restfpr (abfd, p, 30);
5558 p = restfpr (abfd, p, 31);
5559 }
5560 bfd_put_32 (abfd, BLR, p);
5561 return p + 4;
5562}
5563
5564static bfd_byte *
5565savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5566{
5567 p = savefpr (abfd, p, r);
5568 bfd_put_32 (abfd, BLR, p);
5569 return p + 4;
5570}
5571
5572static bfd_byte *
5573restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5574{
5575 p = restfpr (abfd, p, r);
5576 bfd_put_32 (abfd, BLR, p);
5577 return p + 4;
5578}
5579
5580static bfd_byte *
5581savevr (bfd *abfd, bfd_byte *p, int r)
5582{
5583 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5584 p = p + 4;
5585 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5586 return p + 4;
5587}
5588
5589static bfd_byte *
5590savevr_tail (bfd *abfd, bfd_byte *p, int r)
5591{
5592 p = savevr (abfd, p, r);
5593 bfd_put_32 (abfd, BLR, p);
5594 return p + 4;
5595}
5596
5597static bfd_byte *
5598restvr (bfd *abfd, bfd_byte *p, int r)
5599{
5600 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5601 p = p + 4;
5602 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5603 return p + 4;
5604}
5605
5606static bfd_byte *
5607restvr_tail (bfd *abfd, bfd_byte *p, int r)
5608{
5609 p = restvr (abfd, p, r);
5610 bfd_put_32 (abfd, BLR, p);
5611 return p + 4;
5612}
5613
e86ce104
AM		 5614/* Called via elf_link_hash_traverse to transfer dynamic linking
5615 information on function code symbol entries to their corresponding
5616 function descriptor symbol entries. */
deb0e272 5617
b34976b6 5618static bfd_boolean
4ce794b7 5619func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5620{
e86ce104 5621 struct bfd_link_info *info;
65f38f15 5622 struct ppc_link_hash_table *htab;
411e1bfb 5623 struct plt_entry *ent;
50bc7936
AM		 5624 struct ppc_link_hash_entry *fh;
5625 struct ppc_link_hash_entry *fdh;
5626 bfd_boolean force_local;
5bd4f169 5627
50bc7936
AM		 5628 fh = (struct ppc_link_hash_entry *) h;
5629 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5630 return TRUE;
e86ce104 5631
50bc7936
AM		 5632 if (fh->elf.root.type == bfd_link_hash_warning)
5633 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5634
4ce794b7 5635 info = inf;
65f38f15 5636 htab = ppc_hash_table (info);
5bd4f169 5637
c09bdfe5
AM		 5638 /* Resolve undefined references to dot-symbols as the value
5639 in the function descriptor, if we have one in a regular object.
5640 This is to satisfy cases like ".quad .foo". Calls to functions
5641 in dynamic objects are handled elsewhere. */
5642 if (fh->elf.root.type == bfd_link_hash_undefweak
5643 && fh->was_undefined
5644 && (fh->oh->elf.root.type == bfd_link_hash_defined
5645 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5646 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5647 && opd_entry_value (fh->oh->elf.root.u.def.section,
5648 fh->oh->elf.root.u.def.value,
5649 &fh->elf.root.u.def.section,
5650 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5651 {
5652 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5653 fh->elf.forced_local = 1;
c09bdfe5
AM		 5654 }
5655
e86ce104
AM		 5656 /* If this is a function code symbol, transfer dynamic linking
5657 information to the function descriptor symbol. */
50bc7936 5658 if (!fh->is_func)
b34976b6 5659 return TRUE;
e86ce104 5660
50bc7936 5661 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5662 if (ent->plt.refcount > 0)
5663 break;
50bc7936
AM		 5664 if (ent == NULL
5665 || fh->elf.root.root.string[0] != '.'
5666 || fh->elf.root.root.string[1] == '\0')
5667 return TRUE;
5bd4f169 5668
50bc7936
AM		 5669 /* Find the corresponding function descriptor symbol. Create it
5670 as undefined if necessary. */
5bd4f169 5671
50bc7936
AM		 5672 fdh = get_fdh (fh, htab);
5673 if (fdh != NULL)
5674 while (fdh->elf.root.type == bfd_link_hash_indirect
5675 || fdh->elf.root.type == bfd_link_hash_warning)
5676 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5677
50bc7936
AM		 5678 if (fdh == NULL
5679 && info->shared
5680 && (fh->elf.root.type == bfd_link_hash_undefined
5681 || fh->elf.root.type == bfd_link_hash_undefweak))
5682 {
908b32fc 5683 fdh = make_fdh (info, fh);
bb700d78
AM		 5684 if (fdh == NULL)
5685 return FALSE;
50bc7936 5686 }
648cca2c 5687
908b32fc 5688 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5689 code symbol is strong undefined, make the fake sym the same.
5690 If the function code symbol is defined, then force the fake
5691 descriptor local; We can't support overriding of symbols in a
5692 shared library on a fake descriptor. */
908b32fc
AM		 5693
5694 if (fdh != NULL
5695 && fdh->fake
433817dd 5696 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5697 {
433817dd
AM		 5698 if (fh->elf.root.type == bfd_link_hash_undefined)
5699 {
5700 fdh->elf.root.type = bfd_link_hash_undefined;
5701 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5702 }
5703 else if (fh->elf.root.type == bfd_link_hash_defined
5704 || fh->elf.root.type == bfd_link_hash_defweak)
5705 {
5706 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5707 }
908b32fc
AM		 5708 }
5709
50bc7936 5710 if (fdh != NULL
f5385ebf 5711 && !fdh->elf.forced_local
50bc7936 5712 && (info->shared
f5385ebf
AM		 5713 || fdh->elf.def_dynamic
5714 || fdh->elf.ref_dynamic
50bc7936
AM		 5715 || (fdh->elf.root.type == bfd_link_hash_undefweak
5716 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5717 {
5718 if (fdh->elf.dynindx == -1)
c152c796 5719 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5720 return FALSE;
f5385ebf
AM		 5721 fdh->elf.ref_regular |= fh->elf.ref_regular;
5722 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5723 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5724 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5725 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5726 {
40d16e0b 5727 move_plt_plist (fh, fdh);
f5385ebf 5728 fdh->elf.needs_plt = 1;
e86ce104 5729 }
50bc7936 5730 fdh->is_func_descriptor = 1;
34814b9f
AM		 5731 fdh->oh = fh;
5732 fh->oh = fdh;
e86ce104
AM		 5733 }
5734
50bc7936
AM		 5735 /* Now that the info is on the function descriptor, clear the
5736 function code sym info. Any function code syms for which we
5737 don't have a definition in a regular file, we force local.
5738 This prevents a shared library from exporting syms that have
5739 been imported from another library. Function code syms that
5740 are really in the library we must leave global to prevent the
5741 linker dragging in a definition from a static library. */
93f3fa99
AM		 5742 force_local = (!fh->elf.def_regular
5743 || fdh == NULL
5744 || !fdh->elf.def_regular
5745 || fdh->elf.forced_local);
50bc7936
AM		 5746 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5747
b34976b6 5748 return TRUE;
e86ce104 5749}
40b8271b 5750
e86ce104 5751/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5752 this hook to a) provide some gcc support functions, and b) transfer
5753 dynamic linking information gathered so far on function code symbol
5754 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5755
b34976b6 5756static bfd_boolean
4ce794b7
AM		 5757ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5758 struct bfd_link_info *info)
e86ce104
AM		 5759{
5760 struct ppc_link_hash_table *htab;
82bd7b59 5761 unsigned int i;
deb0e272
AM		 5762 const struct sfpr_def_parms funcs[] =
5763 {
5764 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5765 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5766 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5767 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5768 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5769 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5770 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5771 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5772 { "._savef", 14, 31, savefpr, savefpr1_tail },
5773 { "._restf", 14, 31, restfpr, restfpr1_tail },
5774 { "_savevr_", 20, 31, savevr, savevr_tail },
5775 { "_restvr_", 20, 31, restvr, restvr_tail }
5776 };
e86ce104
AM		 5777
5778 htab = ppc_hash_table (info);
82bd7b59
AM		 5779 if (htab->sfpr == NULL)
5780 /* We don't have any relocs. */
b34976b6 5781 return TRUE;
82bd7b59 5782
deb0e272
AM		 5783 /* Provide any missing _save* and _rest* functions. */
5784 htab->sfpr->size = 0;
5785 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5786 if (!sfpr_define (info, &funcs[i]))
5787 return FALSE;
82bd7b59 5788
4ce794b7 5789 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5790
eea6121a 5791 if (htab->sfpr->size == 0)
8423293d 5792 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5793
b34976b6 5794 return TRUE;
e86ce104
AM		 5795}
5796
5797/* Adjust a symbol defined by a dynamic object and referenced by a
5798 regular object. The current definition is in some section of the
5799 dynamic object, but we're not including those sections. We have to
5800 change the definition to something the rest of the link can
5801 understand. */
5802
b34976b6 5803static bfd_boolean
4ce794b7
AM		 5804ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5805 struct elf_link_hash_entry *h)
e86ce104
AM		 5806{
5807 struct ppc_link_hash_table *htab;
e86ce104 5808 asection *s;
e86ce104
AM		 5809
5810 htab = ppc_hash_table (info);
5811
5812 /* Deal with function syms. */
5813 if (h->type == STT_FUNC
f5385ebf 5814 || h->needs_plt)
e86ce104
AM		 5815 {
5816 /* Clear procedure linkage table information for any symbol that
5817 won't need a .plt entry. */
411e1bfb
AM		 5818 struct plt_entry *ent;
5819 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5820 if (ent->plt.refcount > 0)
5821 break;
8387904d 5822 if (ent == NULL
9c7a29a3
AM		 5823 || SYMBOL_CALLS_LOCAL (info, h)
5824 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5825 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5826 {
411e1bfb 5827 h->plt.plist = NULL;
f5385ebf 5828 h->needs_plt = 0;
40b8271b 5829 }
5bd4f169 5830 }
bbd7ec4a 5831 else
411e1bfb 5832 h->plt.plist = NULL;
5bd4f169
AM		 5833
5834 /* If this is a weak symbol, and there is a real definition, the
5835 processor independent code will have arranged for us to see the
5836 real definition first, and we can just use the same value. */
f6e332e6 5837 if (h->u.weakdef != NULL)
5bd4f169 5838 {
f6e332e6
AM		 5839 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5840 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5841 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5842 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5843 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5844 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5845 return TRUE;
5bd4f169
AM		 5846 }
5847
5bd4f169
AM		 5848 /* If we are creating a shared library, we must presume that the
5849 only references to the symbol are via the global offset table.
5850 For such cases we need not do anything here; the relocations will
5851 be handled correctly by relocate_section. */
5852 if (info->shared)
b34976b6 5853 return TRUE;
5bd4f169 5854
65f38f15
AM		 5855 /* If there are no references to this symbol that do not use the
5856 GOT, we don't need to generate a copy reloc. */
f5385ebf 5857 if (!h->non_got_ref)
b34976b6 5858 return TRUE;
65f38f15 5859
b186458a
JJ		 5860 /* Don't generate a copy reloc for symbols defined in the executable. */
5861 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
5862 return TRUE;
5863
f4656909 5864 if (ELIMINATE_COPY_RELOCS)
65f38f15 5865 {
f4656909
AM		 5866 struct ppc_link_hash_entry * eh;
5867 struct ppc_dyn_relocs *p;
65f38f15 5868
f4656909
AM		 5869 eh = (struct ppc_link_hash_entry *) h;
5870 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5871 {
5872 s = p->sec->output_section;
5873 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5874 break;
5875 }
5876
5877 /* If we didn't find any dynamic relocs in read-only sections, then
5878 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5879 if (p == NULL)
5880 {
f5385ebf 5881 h->non_got_ref = 0;
f4656909
AM		 5882 return TRUE;
5883 }
65f38f15
AM		 5884 }
5885
5d35169e 5886 if (h->plt.plist != NULL)
97b639ba
AM		 5887 {
5888 /* We should never get here, but unfortunately there are versions
5889 of gcc out there that improperly (for this ABI) put initialized
5890 function pointers, vtable refs and suchlike in read-only
5891 sections. Allow them to proceed, but warn that this might
5892 break at runtime. */
5893 (*_bfd_error_handler)
5894 (_("copy reloc against `%s' requires lazy plt linking; "
5895 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5896 h->root.root.string);
5897 }
5d35169e
AM		 5898
5899 /* This is a reference to a symbol defined by a dynamic object which
5900 is not a function. */
5901
909272ee
AM		 5902 if (h->size == 0)
5903 {
5904 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5905 h->root.root.string);
5906 return TRUE;
5907 }
5908
5bd4f169
AM		 5909 /* We must allocate the symbol in our .dynbss section, which will
5910 become part of the .bss section of the executable. There will be
5911 an entry for this symbol in the .dynsym section. The dynamic
5912 object will contain position independent code, so all references
5913 from the dynamic object to this symbol will go through the global
5914 offset table. The dynamic linker will use the .dynsym entry to
5915 determine the address it must put in the global offset table, so
5916 both the dynamic object and the regular object will refer to the
5917 same memory location for the variable. */
5bd4f169 5918
04c9666a
AM		 5919 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5920 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5921 runtime process image. We need to remember the offset into the
5922 .rela.bss section we are going to use. */
5923 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5924 {
eea6121a 5925 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5926 h->needs_copy = 1;
5bd4f169
AM		 5927 }
5928
4ce794b7 5929 s = htab->dynbss;
5bd4f169 5930
027297b7 5931 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 5932}
5933
e86ce104
AM		 5934/* If given a function descriptor symbol, hide both the function code
5935 sym and the descriptor. */
5936static void
4ce794b7
AM		 5937ppc64_elf_hide_symbol (struct bfd_link_info *info,
5938 struct elf_link_hash_entry *h,
5939 bfd_boolean force_local)
e86ce104 5940{
34814b9f 5941 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5942 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5943
34814b9f
AM		 5944 eh = (struct ppc_link_hash_entry *) h;
5945 if (eh->is_func_descriptor)
e86ce104 5946 {
34814b9f 5947 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5948
721956f4 5949 if (fh == NULL)
d1329ca3
AM		 5950 {
5951 const char *p, *q;
5952 struct ppc_link_hash_table *htab;
5953 char save;
5954
5955 /* We aren't supposed to use alloca in BFD because on
5956 systems which do not have alloca the version in libiberty
5957 calls xmalloc, which might cause the program to crash
5958 when it runs out of memory. This function doesn't have a
5959 return status, so there's no way to gracefully return an
5960 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5961 accessed; It's either a string in an ELF string table,
5962 or allocated in an objalloc structure. */
d1329ca3 5963
34814b9f 5964 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5965 save = *p;
5966 *(char *) p = '.';
5967 htab = ppc_hash_table (info);
34814b9f
AM		 5968 fh = (struct ppc_link_hash_entry *)
5969 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5970 *(char *) p = save;
5971
5972 /* Unfortunately, if it so happens that the string we were
5973 looking for was allocated immediately before this string,
5974 then we overwrote the string terminator. That's the only
5975 reason the lookup should fail. */
5976 if (fh == NULL)
5977 {
34814b9f
AM		 5978 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5979 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5980 --q, --p;
34814b9f
AM		 5981 if (q < eh->elf.root.root.string && *p == '.')
5982 fh = (struct ppc_link_hash_entry *)
5983 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5984 }
5985 if (fh != NULL)
5986 {
34814b9f
AM		 5987 eh->oh = fh;
5988 fh->oh = eh;
d1329ca3
AM		 5989 }
5990 }
e86ce104 5991 if (fh != NULL)
34814b9f 5992 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5993 }
5994}
5995
411e1bfb 5996static bfd_boolean
8843416a
AM		 5997get_sym_h (struct elf_link_hash_entry **hp,
5998 Elf_Internal_Sym **symp,
5999 asection **symsecp,
6000 char **tls_maskp,
6001 Elf_Internal_Sym **locsymsp,
6002 unsigned long r_symndx,
6003 bfd *ibfd)
411e1bfb
AM		 6004{
6005 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6006
6007 if (r_symndx >= symtab_hdr->sh_info)
6008 {
6009 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6010 struct elf_link_hash_entry *h;
6011
6012 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6013 while (h->root.type == bfd_link_hash_indirect
6014 || h->root.type == bfd_link_hash_warning)
6015 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6016
6017 if (hp != NULL)
6018 *hp = h;
6019
6020 if (symp != NULL)
6021 *symp = NULL;
6022
6023 if (symsecp != NULL)
6024 {
6025 asection *symsec = NULL;
6026 if (h->root.type == bfd_link_hash_defined
6027 || h->root.type == bfd_link_hash_defweak)
6028 symsec = h->root.u.def.section;
6029 *symsecp = symsec;
6030 }
6031
e7b938ca 6032 if (tls_maskp != NULL)
411e1bfb
AM		 6033 {
6034 struct ppc_link_hash_entry *eh;
6035
6036 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6037 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 6038 }
6039 }
6040 else
6041 {
6042 Elf_Internal_Sym *sym;
6043 Elf_Internal_Sym *locsyms = *locsymsp;
6044
6045 if (locsyms == NULL)
6046 {
6047 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6048 if (locsyms == NULL)
6049 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6050 symtab_hdr->sh_info,
6051 0, NULL, NULL, NULL);
6052 if (locsyms == NULL)
6053 return FALSE;
6054 *locsymsp = locsyms;
6055 }
6056 sym = locsyms + r_symndx;
6057
6058 if (hp != NULL)
6059 *hp = NULL;
6060
6061 if (symp != NULL)
6062 *symp = sym;
6063
6064 if (symsecp != NULL)
6065 {
6066 asection *symsec = NULL;
6067 if ((sym->st_shndx != SHN_UNDEF
6068 && sym->st_shndx < SHN_LORESERVE)
6069 || sym->st_shndx > SHN_HIRESERVE)
6070 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6071 *symsecp = symsec;
6072 }
6073
e7b938ca 6074 if (tls_maskp != NULL)
411e1bfb
AM		 6075 {
6076 struct got_entry **lgot_ents;
e7b938ca 6077 char *tls_mask;
411e1bfb 6078
e7b938ca 6079 tls_mask = NULL;
411e1bfb
AM		 6080 lgot_ents = elf_local_got_ents (ibfd);
6081 if (lgot_ents != NULL)
6082 {
e7b938ca
AM		 6083 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6084 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6085 }
e7b938ca 6086 *tls_maskp = tls_mask;
411e1bfb
AM		 6087 }
6088 }
6089 return TRUE;
6090}
6091
e7b938ca 6092/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6093 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6094 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 6095
6096static int
0d4792f7
AM		 6097get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6098 Elf_Internal_Sym **locsymsp,
4ce794b7 6099 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 6100{
6101 unsigned long r_symndx;
0d4792f7 6102 int next_r;
411e1bfb
AM		 6103 struct elf_link_hash_entry *h;
6104 Elf_Internal_Sym *sym;
6105 asection *sec;
6106 bfd_vma off;
6107
6108 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6109 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6110 return 0;
411e1bfb 6111
e7b938ca 6112 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6113 || sec == NULL
7c8fe5c4 6114 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6115 return 1;
411e1bfb
AM		 6116
6117 /* Look inside a TOC section too. */
6118 if (h != NULL)
6119 {
6120 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6121 off = h->root.u.def.value;
6122 }
6123 else
6124 off = sym->st_value;
6125 off += rel->r_addend;
6126 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM		 6127 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6128 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6129 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6130 return 0;
0d4792f7
AM		 6131 if (toc_symndx != NULL)
6132 *toc_symndx = r_symndx;
6133 if ((h == NULL
6134 || ((h->root.type == bfd_link_hash_defined
6135 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6136 && !h->def_dynamic))
0d4792f7
AM		 6137 && (next_r == -1 || next_r == -2))
6138 return 1 - next_r;
951fd09b 6139 return 1;
411e1bfb
AM		 6140}
6141
754021d0 6142/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6143 code for the old ABI, these will already have been done. */
754021d0
AM		 6144
6145static bfd_boolean
6146adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6147{
6148 struct ppc_link_hash_entry *eh;
6149 asection *sym_sec;
6150 long *opd_adjust;
6151
6152 if (h->root.type == bfd_link_hash_indirect)
6153 return TRUE;
6154
6155 if (h->root.type == bfd_link_hash_warning)
6156 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6157
6158 if (h->root.type != bfd_link_hash_defined
6159 && h->root.type != bfd_link_hash_defweak)
6160 return TRUE;
6161
6162 eh = (struct ppc_link_hash_entry *) h;
6163 if (eh->adjust_done)
6164 return TRUE;
6165
6166 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 6167 opd_adjust = get_opd_info (sym_sec);
6168 if (opd_adjust != NULL)
754021d0 6169 {
3f764659 6170 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6171 if (adjust == -1)
6172 {
6173 /* This entry has been deleted. */
b3fac117 6174 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 6175 if (dsec == NULL)
6176 {
6177 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6178 if (elf_discarded_section (dsec))
6179 {
b3fac117 6180 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 6181 break;
6182 }
6183 }
4025353c 6184 eh->elf.root.u.def.value = 0;
81688140 6185 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6186 }
6187 else
6188 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6189 eh->adjust_done = 1;
6190 }
6191 return TRUE;
6192}
6193
8c1d1bb8
AM		 6194/* Handles decrementing dynamic reloc counts for the reloc specified by
6195 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6196 have already been determined. */
6197
6198static bfd_boolean
6199dec_dynrel_count (bfd_vma r_info,
6200 asection *sec,
6201 struct bfd_link_info *info,
6202 Elf_Internal_Sym **local_syms,
6203 struct elf_link_hash_entry *h,
6204 asection *sym_sec)
6205{
6206 enum elf_ppc64_reloc_type r_type;
6207 struct ppc_dyn_relocs *p;
6208 struct ppc_dyn_relocs **pp;
6209
6210 /* Can this reloc be dynamic? This switch, and later tests here
6211 should be kept in sync with the code in check_relocs. */
6212 r_type = ELF64_R_TYPE (r_info);
6213 switch (r_type)
6214 {
6215 default:
6216 return TRUE;
6217
6218 case R_PPC64_TPREL16:
6219 case R_PPC64_TPREL16_LO:
6220 case R_PPC64_TPREL16_HI:
6221 case R_PPC64_TPREL16_HA:
6222 case R_PPC64_TPREL16_DS:
6223 case R_PPC64_TPREL16_LO_DS:
6224 case R_PPC64_TPREL16_HIGHER:
6225 case R_PPC64_TPREL16_HIGHERA:
6226 case R_PPC64_TPREL16_HIGHEST:
6227 case R_PPC64_TPREL16_HIGHESTA:
6228 if (!info->shared)
6229 return TRUE;
6230
6231 case R_PPC64_TPREL64:
6232 case R_PPC64_DTPMOD64:
6233 case R_PPC64_DTPREL64:
6234 case R_PPC64_ADDR64:
6235 case R_PPC64_REL30:
6236 case R_PPC64_REL32:
6237 case R_PPC64_REL64:
6238 case R_PPC64_ADDR14:
6239 case R_PPC64_ADDR14_BRNTAKEN:
6240 case R_PPC64_ADDR14_BRTAKEN:
6241 case R_PPC64_ADDR16:
6242 case R_PPC64_ADDR16_DS:
6243 case R_PPC64_ADDR16_HA:
6244 case R_PPC64_ADDR16_HI:
6245 case R_PPC64_ADDR16_HIGHER:
6246 case R_PPC64_ADDR16_HIGHERA:
6247 case R_PPC64_ADDR16_HIGHEST:
6248 case R_PPC64_ADDR16_HIGHESTA:
6249 case R_PPC64_ADDR16_LO:
6250 case R_PPC64_ADDR16_LO_DS:
6251 case R_PPC64_ADDR24:
6252 case R_PPC64_ADDR32:
6253 case R_PPC64_UADDR16:
6254 case R_PPC64_UADDR32:
6255 case R_PPC64_UADDR64:
6256 case R_PPC64_TOC:
6257 break;
6258 }
6259
6260 if (local_syms != NULL)
6261 {
6262 unsigned long r_symndx;
6263 Elf_Internal_Sym *sym;
6264 bfd *ibfd = sec->owner;
6265
6266 r_symndx = ELF64_R_SYM (r_info);
6267 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6268 return FALSE;
6269 }
6270
6271 if ((info->shared
6272 && (MUST_BE_DYN_RELOC (r_type)
6273 || (h != NULL
6274 && (!info->symbolic
6275 || h->root.type == bfd_link_hash_defweak
6276 || !h->def_regular))))
6277 || (ELIMINATE_COPY_RELOCS
6278 && !info->shared
6279 && h != NULL
6280 && (h->root.type == bfd_link_hash_defweak
6281 || !h->def_regular)))
6282 ;
6283 else
6284 return TRUE;
6285
6286 if (h != NULL)
6287 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6288 else
6edfbbad 6289 {
60124e18
AM		 6290 if (sym_sec != NULL)
6291 {
6292 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6293 pp = (struct ppc_dyn_relocs **) vpp;
6294 }
6295 else
6296 {
6297 void *vpp = &elf_section_data (sec)->local_dynrel;
6298 pp = (struct ppc_dyn_relocs **) vpp;
6299 }
6300
6301 /* elf_gc_sweep may have already removed all dyn relocs associated
6302 with local syms for a given section. Don't report a dynreloc
6303 miscount. */
6304 if (*pp == NULL)
6305 return TRUE;
6edfbbad 6306 }
8c1d1bb8
AM		 6307
6308 while ((p = *pp) != NULL)
6309 {
6310 if (p->sec == sec)
6311 {
6312 if (!MUST_BE_DYN_RELOC (r_type))
6313 p->pc_count -= 1;
6314 p->count -= 1;
6315 if (p->count == 0)
6316 *pp = p->next;
6317 return TRUE;
6318 }
6319 pp = &p->next;
6320 }
6321
6322 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6323 sec->owner, sec);
6324 bfd_set_error (bfd_error_bad_value);
6325 return FALSE;
6326}
6327
754021d0
AM		 6328/* Remove unused Official Procedure Descriptor entries. Currently we
6329 only remove those associated with functions in discarded link-once
6330 sections, or weakly defined functions that have been overridden. It
6331 would be possible to remove many more entries for statically linked
6332 applications. */
6333
b34976b6 6334bfd_boolean
3f764659 6335ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6336 bfd_boolean no_opd_opt,
3f764659 6337 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6338{
6339 bfd *ibfd;
754021d0 6340 bfd_boolean some_edited = FALSE;
3f764659 6341 asection *need_pad = NULL;
1e2f5b6e 6342
411e1bfb 6343 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6344 {
6345 asection *sec;
6346 Elf_Internal_Rela *relstart, *rel, *relend;
6347 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6348 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6349 struct elf_link_hash_entry **sym_hashes;
6350 bfd_vma offset;
d6fe2dc1 6351 bfd_size_type amt;
4025353c 6352 long *opd_adjust;
3f764659
JJ		 6353 bfd_boolean need_edit, add_aux_fields;
6354 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6355
6356 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6357 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6358 continue;
6359
3f764659 6360 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6361 opd_adjust = get_opd_info (sec);
6362 if (opd_adjust == NULL)
d6fe2dc1 6363 {
4b85d634
AM		 6364 /* check_relocs hasn't been called. Must be a ld -r link
6365 or --just-symbols object. */
b4f4e59f 6366 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM		 6367 if (opd_adjust == NULL)
6368 return FALSE;
7c8fe5c4
AM		 6369 ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust;
6370 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
6371 ppc64_elf_section_data (sec)->sec_type = sec_opd;
d6fe2dc1 6372 }
4025353c 6373 memset (opd_adjust, 0, amt);
1e2f5b6e 6374
b4f4e59f
AM		 6375 if (no_opd_opt)
6376 continue;
6377
4b85d634
AM		 6378 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6379 continue;
6380
1e2f5b6e
AM		 6381 if (sec->output_section == bfd_abs_section_ptr)
6382 continue;
6383
6384 /* Look through the section relocs. */
6385 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6386 continue;
6387
6cdc0ccc 6388 local_syms = NULL;
1e2f5b6e
AM		 6389 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6390 sym_hashes = elf_sym_hashes (ibfd);
6391
6392 /* Read the relocations. */
4ce794b7 6393 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6394 info->keep_memory);
1e2f5b6e 6395 if (relstart == NULL)
b34976b6 6396 return FALSE;
1e2f5b6e
AM		 6397
6398 /* First run through the relocs to check they are sane, and to
6399 determine whether we need to edit this opd section. */
b34976b6 6400 need_edit = FALSE;
3f764659 6401 need_pad = sec;
1e2f5b6e
AM		 6402 offset = 0;
6403 relend = relstart + sec->reloc_count;
50bc7936 6404 for (rel = relstart; rel < relend; )
1e2f5b6e 6405 {
04c9666a 6406 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6407 unsigned long r_symndx;
6408 asection *sym_sec;
6409 struct elf_link_hash_entry *h;
6410 Elf_Internal_Sym *sym;
6411
3f764659 6412 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6413 only interested in the reloc pointing to a function entry
6414 point. */
50bc7936
AM		 6415 if (rel->r_offset != offset
6416 || rel + 1 >= relend
6417 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6418 {
6419 /* If someone messes with .opd alignment then after a
6420 "ld -r" we might have padding in the middle of .opd.
6421 Also, there's nothing to prevent someone putting
6422 something silly in .opd with the assembler. No .opd
b34976b6 6423 optimization for them! */
3f764659 6424 broken_opd:
1e2f5b6e 6425 (*_bfd_error_handler)
d003868e 6426 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6427 need_edit = FALSE;
1e2f5b6e
AM		 6428 break;
6429 }
6430
50bc7936
AM		 6431 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6432 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6433 {
6434 (*_bfd_error_handler)
d003868e
AM		 6435 (_("%B: unexpected reloc type %u in .opd section"),
6436 ibfd, r_type);
50bc7936
AM		 6437 need_edit = FALSE;
6438 break;
6439 }
6440
1e2f5b6e 6441 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6442 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6443 r_symndx, ibfd))
50bc7936 6444 goto error_ret;
1e2f5b6e
AM		 6445
6446 if (sym_sec == NULL || sym_sec->owner == NULL)
6447 {
411e1bfb
AM		 6448 const char *sym_name;
6449 if (h != NULL)
6450 sym_name = h->root.root.string;
6451 else
26c61ae5
L		 6452 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6453 sym_sec);
411e1bfb 6454
1e2f5b6e 6455 (*_bfd_error_handler)
d003868e
AM		 6456 (_("%B: undefined sym `%s' in .opd section"),
6457 ibfd, sym_name);
b34976b6 6458 need_edit = FALSE;
1e2f5b6e
AM		 6459 break;
6460 }
6461
51020317
AM		 6462 /* opd entries are always for functions defined in the
6463 current input bfd. If the symbol isn't defined in the
6464 input bfd, then we won't be using the function in this
6465 bfd; It must be defined in a linkonce section in another
6466 bfd, or is weak. It's also possible that we are
6467 discarding the function due to a linker script /DISCARD/,
6468 which we test for via the output_section. */
6469 if (sym_sec->owner != ibfd
6470 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6471 need_edit = TRUE;
1e2f5b6e 6472
50bc7936 6473 rel += 2;
3f764659
JJ		 6474 if (rel == relend
6475 || (rel + 1 == relend && rel->r_offset == offset + 16))
6476 {
6477 if (sec->size == offset + 24)
6478 {
6479 need_pad = NULL;
6480 break;
6481 }
6482 if (rel == relend && sec->size == offset + 16)
6483 {
6484 cnt_16b++;
6485 break;
6486 }
6487 goto broken_opd;
6488 }
6489
6490 if (rel->r_offset == offset + 24)
6491 offset += 24;
6492 else if (rel->r_offset != offset + 16)
6493 goto broken_opd;
6494 else if (rel + 1 < relend
6495 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6496 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6497 {
6498 offset += 16;
6499 cnt_16b++;
6500 }
6501 else if (rel + 2 < relend
6502 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6503 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6504 {
6505 offset += 24;
6506 rel += 1;
6507 }
6508 else
6509 goto broken_opd;
1e2f5b6e
AM		 6510 }
6511
3f764659
JJ		 6512 add_aux_fields = non_overlapping && cnt_16b > 0;
6513
6514 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6515 {
6516 Elf_Internal_Rela *write_rel;
6517 bfd_byte *rptr, *wptr;
3f764659 6518 bfd_byte *new_contents = NULL;
b34976b6 6519 bfd_boolean skip;
3f764659 6520 long opd_ent_size;
1e2f5b6e
AM		 6521
6522 /* This seems a waste of time as input .opd sections are all
6523 zeros as generated by gcc, but I suppose there's no reason
6524 this will always be so. We might start putting something in
6525 the third word of .opd entries. */
6526 if ((sec->flags & SEC_IN_MEMORY) == 0)
6527 {
eea6121a
AM		 6528 bfd_byte *loc;
6529 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6530 {
eea6121a
AM		 6531 if (loc != NULL)
6532 free (loc);
50bc7936 6533 error_ret:
6cdc0ccc
AM		 6534 if (local_syms != NULL
6535 && symtab_hdr->contents != (unsigned char *) local_syms)
6536 free (local_syms);
6cdc0ccc
AM		 6537 if (elf_section_data (sec)->relocs != relstart)
6538 free (relstart);
b34976b6 6539 return FALSE;
6cdc0ccc 6540 }
1e2f5b6e
AM		 6541 sec->contents = loc;
6542 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6543 }
6544
6545 elf_section_data (sec)->relocs = relstart;
6546
3f764659 6547 new_contents = sec->contents;
3f764659
JJ		 6548 if (add_aux_fields)
6549 {
6550 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6551 if (new_contents == NULL)
6552 return FALSE;
6553 need_pad = FALSE;
3f764659 6554 }
b4f4e59f
AM		 6555 wptr = new_contents;
6556 rptr = sec->contents;
3f764659 6557
1e2f5b6e 6558 write_rel = relstart;
b34976b6 6559 skip = FALSE;
1e2f5b6e 6560 offset = 0;
3f764659 6561 opd_ent_size = 0;
1e2f5b6e
AM		 6562 for (rel = relstart; rel < relend; rel++)
6563 {
50bc7936
AM		 6564 unsigned long r_symndx;
6565 asection *sym_sec;
6566 struct elf_link_hash_entry *h;
6567 Elf_Internal_Sym *sym;
6568
6569 r_symndx = ELF64_R_SYM (rel->r_info);
6570 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6571 r_symndx, ibfd))
50bc7936
AM		 6572 goto error_ret;
6573
1e2f5b6e
AM		 6574 if (rel->r_offset == offset)
6575 {
50bc7936 6576 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6577
6578 /* See if the .opd entry is full 24 byte or
6579 16 byte (with fd_aux entry overlapped with next
6580 fd_func). */
6581 opd_ent_size = 24;
6582 if ((rel + 2 == relend && sec->size == offset + 16)
6583 || (rel + 3 < relend
6584 && rel[2].r_offset == offset + 16
6585 && rel[3].r_offset == offset + 24
6586 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6587 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6588 opd_ent_size = 16;
6589
4025353c
AM		 6590 if (h != NULL
6591 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6592 {
6593 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6594 ppc_hash_table (info));
6595 if (fdh != NULL
6596 && fdh->elf.root.type != bfd_link_hash_defined
6597 && fdh->elf.root.type != bfd_link_hash_defweak)
6598 fdh = NULL;
6599 }
1e2f5b6e 6600
51020317
AM		 6601 skip = (sym_sec->owner != ibfd
6602 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6603 if (skip)
6604 {
4025353c 6605 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6606 {
6607 /* Arrange for the function descriptor sym
6608 to be dropped. */
d6fe2dc1
AM		 6609 fdh->elf.root.u.def.value = 0;
6610 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6611 }
3f764659 6612 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6613 }
6614 else
1e2f5b6e
AM		 6615 {
6616 /* We'll be keeping this opd entry. */
6617
4025353c 6618 if (fdh != NULL)
1e2f5b6e 6619 {
754021d0
AM		 6620 /* Redefine the function descriptor symbol to
6621 this location in the opd section. It is
6622 necessary to update the value here rather
6623 than using an array of adjustments as we do
6624 for local symbols, because various places
6625 in the generic ELF code use the value
6626 stored in u.def.value. */
3f764659 6627 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6628 fdh->adjust_done = 1;
1e2f5b6e 6629 }
754021d0
AM		 6630
6631 /* Local syms are a bit tricky. We could
6632 tweak them as they can be cached, but
6633 we'd need to look through the local syms
6634 for the function descriptor sym which we
6635 don't have at the moment. So keep an
6636 array of adjustments. */
3f764659
JJ		 6637 opd_adjust[rel->r_offset / 8]
6638 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6639
6640 if (wptr != rptr)
3f764659
JJ		 6641 memcpy (wptr, rptr, opd_ent_size);
6642 wptr += opd_ent_size;
6643 if (add_aux_fields && opd_ent_size == 16)
6644 {
6645 memset (wptr, '\0', 8);
6646 wptr += 8;
6647 }
1e2f5b6e 6648 }
3f764659
JJ		 6649 rptr += opd_ent_size;
6650 offset += opd_ent_size;
1e2f5b6e
AM		 6651 }
6652
50bc7936
AM		 6653 if (skip)
6654 {
60124e18
AM		 6655 if (!NO_OPD_RELOCS
6656 && !info->relocatable
18d944df
AM		 6657 && !dec_dynrel_count (rel->r_info, sec, info,
6658 NULL, h, sym_sec))
8c1d1bb8 6659 goto error_ret;
50bc7936
AM		 6660 }
6661 else
1e2f5b6e 6662 {
50bc7936
AM		 6663 /* We need to adjust any reloc offsets to point to the
6664 new opd entries. While we're at it, we may as well
6665 remove redundant relocs. */
3f764659 6666 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6667 if (write_rel != rel)
6668 memcpy (write_rel, rel, sizeof (*rel));
6669 ++write_rel;
6670 }
6671 }
6672
3f764659 6673 sec->size = wptr - new_contents;
1e2f5b6e 6674 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6675 if (add_aux_fields)
6676 {
6677 free (sec->contents);
6678 sec->contents = new_contents;
6679 }
6680
05bf9422 6681 /* Fudge the header size too, as this is used later in
cdcf6e38
AM		 6682 elf_bfd_final_link if we are emitting relocs. */
6683 elf_section_data (sec)->rel_hdr.sh_size
6684 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6685 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6686 some_edited = TRUE;
1e2f5b6e 6687 }
6cdc0ccc 6688 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6689 free (relstart);
6cdc0ccc 6690
411e1bfb
AM		 6691 if (local_syms != NULL
6692 && symtab_hdr->contents != (unsigned char *) local_syms)
6693 {
6694 if (!info->keep_memory)
6695 free (local_syms);
6696 else
6697 symtab_hdr->contents = (unsigned char *) local_syms;
6698 }
6699 }
6700
754021d0
AM		 6701 if (some_edited)
6702 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6703
3f764659
JJ		 6704 /* If we are doing a final link and the last .opd entry is just 16 byte
6705 long, add a 8 byte padding after it. */
6706 if (need_pad != NULL && !info->relocatable)
6707 {
6708 bfd_byte *p;
6709
6710 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6711 {
6712 BFD_ASSERT (need_pad->size > 0);
6713
6714 p = bfd_malloc (need_pad->size + 8);
6715 if (p == NULL)
6716 return FALSE;
699733f6 6717
3f764659
JJ		 6718 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6719 p, 0, need_pad->size))
6720 return FALSE;
6721
6722 need_pad->contents = p;
6723 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6724 }
6725 else
6726 {
6727 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6728 if (p == NULL)
6729 return FALSE;
6730
6731 need_pad->contents = p;
6732 }
6733
6734 memset (need_pad->contents + need_pad->size, 0, 8);
6735 need_pad->size += 8;
6736 }
6737
411e1bfb
AM		 6738 return TRUE;
6739}
6740
e1918d23 6741/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6742
e1918d23 6743asection *
4ce794b7 6744ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6745{
411e1bfb
AM		 6746 struct ppc_link_hash_table *htab;
6747
411e1bfb 6748 htab = ppc_hash_table (info);
a48ebf4d
AM		 6749 if (htab->tls_get_addr != NULL)
6750 {
8387904d 6751 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6752
8387904d
AM		 6753 while (h->elf.root.type == bfd_link_hash_indirect
6754 || h->elf.root.type == bfd_link_hash_warning)
6755 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6756
6757 htab->tls_get_addr = h;
8387904d
AM		 6758
6759 if (htab->tls_get_addr_fd == NULL
6760 && h->oh != NULL
c4f68ce3
AM		 6761 && h->oh->is_func_descriptor
6762 && (h->oh->elf.root.type == bfd_link_hash_defined
6763 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6764 htab->tls_get_addr_fd = h->oh;
6765 }
6766
6767 if (htab->tls_get_addr_fd != NULL)
6768 {
6769 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6770
6771 while (h->elf.root.type == bfd_link_hash_indirect
6772 || h->elf.root.type == bfd_link_hash_warning)
6773 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6774
6775 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6776 }
6777
e1918d23 6778 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6779}
411e1bfb 6780
951fd09b
AM		 6781/* Run through all the TLS relocs looking for optimization
6782 opportunities. The linker has been hacked (see ppc64elf.em) to do
6783 a preliminary section layout so that we know the TLS segment
6784 offsets. We can't optimize earlier because some optimizations need
6785 to know the tp offset, and we need to optimize before allocating
6786 dynamic relocations. */
6787
6788bfd_boolean
4ce794b7 6789ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6790{
6791 bfd *ibfd;
6792 asection *sec;
6793 struct ppc_link_hash_table *htab;
6794
1049f94e 6795 if (info->relocatable || info->shared)
411e1bfb
AM		 6796 return TRUE;
6797
951fd09b 6798 htab = ppc_hash_table (info);
411e1bfb
AM		 6799 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6800 {
6801 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM		 6802 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6803 unsigned char *toc_ref = NULL;
411e1bfb 6804
30038c59
AM		 6805 /* Look at all the sections for this file, with TOC last. */
6806 for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next
6807 : ibfd->sections);
6808 sec != NULL;
6809 sec = (sec == toc ? NULL
6810 : sec->next == NULL ? toc
6811 : sec->next == toc && toc->next ? toc->next
6812 : sec->next))
411e1bfb
AM		 6813 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6814 {
6815 Elf_Internal_Rela *relstart, *rel, *relend;
6816 int expecting_tls_get_addr;
30038c59 6817 long toc_ref_index = 0;
411e1bfb
AM		 6818
6819 /* Read the relocations. */
4ce794b7 6820 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6821 info->keep_memory);
411e1bfb
AM		 6822 if (relstart == NULL)
6823 return FALSE;
6824
6825 expecting_tls_get_addr = 0;
6826 relend = relstart + sec->reloc_count;
6827 for (rel = relstart; rel < relend; rel++)
6828 {
6829 enum elf_ppc64_reloc_type r_type;
6830 unsigned long r_symndx;
6831 struct elf_link_hash_entry *h;
6832 Elf_Internal_Sym *sym;
6833 asection *sym_sec;
e7b938ca
AM		 6834 char *tls_mask;
6835 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6836 bfd_vma value;
951fd09b 6837 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6838
6839 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6840 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6841 r_symndx, ibfd))
6842 {
6843 err_free_rel:
6844 if (elf_section_data (sec)->relocs != relstart)
6845 free (relstart);
30038c59
AM		 6846 if (toc_ref != NULL)
6847 free (toc_ref);
411e1bfb
AM		 6848 if (locsyms != NULL
6849 && (elf_tdata (ibfd)->symtab_hdr.contents
6850 != (unsigned char *) locsyms))
6851 free (locsyms);
6852 return FALSE;
6853 }
6854
6855 if (h != NULL)
6856 {
6857 if (h->root.type != bfd_link_hash_defined
6858 && h->root.type != bfd_link_hash_defweak)
6859 continue;
6860 value = h->root.u.def.value;
6861 }
6862 else
4025353c
AM		 6863 /* Symbols referenced by TLS relocs must be of type
6864 STT_TLS. So no need for .opd local sym adjust. */
6865 value = sym->st_value;
951fd09b 6866
411e1bfb 6867 ok_tprel = FALSE;
951fd09b
AM		 6868 is_local = FALSE;
6869 if (h == NULL
f5385ebf 6870 || !h->def_dynamic)
411e1bfb 6871 {
951fd09b 6872 is_local = TRUE;
411e1bfb
AM		 6873 value += sym_sec->output_offset;
6874 value += sym_sec->output_section->vma;
e1918d23 6875 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6876 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6877 < (bfd_vma) 1 << 32);
6878 }
6879
4ce794b7 6880 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6881 switch (r_type)
6882 {
6883 case R_PPC64_GOT_TLSLD16:
6884 case R_PPC64_GOT_TLSLD16_LO:
6885 case R_PPC64_GOT_TLSLD16_HI:
6886 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6887 /* These relocs should never be against a symbol
6888 defined in a shared lib. Leave them alone if
6889 that turns out to be the case. */
e717da7e 6890 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6891 if (!is_local)
6892 continue;
6893
951fd09b
AM		 6894 /* LD -> LE */
6895 tls_set = 0;
6896 tls_clear = TLS_LD;
e7b938ca 6897 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6898 expecting_tls_get_addr = 1;
6899 break;
6900
6901 case R_PPC64_GOT_TLSGD16:
6902 case R_PPC64_GOT_TLSGD16_LO:
6903 case R_PPC64_GOT_TLSGD16_HI:
6904 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6905 if (ok_tprel)
411e1bfb
AM		 6906 /* GD -> LE */
6907 tls_set = 0;
6908 else
6909 /* GD -> IE */
951fd09b
AM		 6910 tls_set = TLS_TLS | TLS_TPRELGD;
6911 tls_clear = TLS_GD;
e7b938ca 6912 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6913 expecting_tls_get_addr = 1;
6914 break;
6915
6916 case R_PPC64_GOT_TPREL16_DS:
6917 case R_PPC64_GOT_TPREL16_LO_DS:
6918 case R_PPC64_GOT_TPREL16_HI:
6919 case R_PPC64_GOT_TPREL16_HA:
6920 expecting_tls_get_addr = 0;
6921 if (ok_tprel)
6922 {
6923 /* IE -> LE */
6924 tls_set = 0;
6925 tls_clear = TLS_TPREL;
e7b938ca 6926 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6927 break;
6928 }
6929 else
6930 continue;
6931
6932 case R_PPC64_REL14:
6933 case R_PPC64_REL14_BRTAKEN:
6934 case R_PPC64_REL14_BRNTAKEN:
6935 case R_PPC64_REL24:
6936 if (h != NULL
8387904d
AM		 6937 && (h == &htab->tls_get_addr->elf
6938 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6939 {
6940 if (!expecting_tls_get_addr
6941 && rel != relstart
6942 && ((ELF64_R_TYPE (rel[-1].r_info)
6943 == R_PPC64_TOC16)
6944 || (ELF64_R_TYPE (rel[-1].r_info)
6945 == R_PPC64_TOC16_LO)))
6946 {
6947 /* Check for toc tls entries. */
6948 char *toc_tls;
951fd09b 6949 int retval;
411e1bfb 6950
0d4792f7 6951 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6952 rel - 1, ibfd);
6953 if (retval == 0)
411e1bfb 6954 goto err_free_rel;
30038c59
AM		 6955 if (retval > 1 && toc_tls != NULL)
6956 {
6957 expecting_tls_get_addr = 1;
6958 if (toc_ref != NULL)
6959 toc_ref[toc_ref_index] = 1;
6960 }
411e1bfb
AM		 6961 }
6962
6963 if (expecting_tls_get_addr)
6964 {
6965 struct plt_entry *ent;
6966 for (ent = h->plt.plist; ent; ent = ent->next)
6967 if (ent->addend == 0)
6968 {
6969 if (ent->plt.refcount > 0)
6970 ent->plt.refcount -= 1;
6971 break;
6972 }
6973 }
6974 }
6975 expecting_tls_get_addr = 0;
6976 continue;
6977
30038c59
AM		 6978 case R_PPC64_TOC16:
6979 case R_PPC64_TOC16_LO:
6980 case R_PPC64_TLS:
6981 expecting_tls_get_addr = 0;
6982 if (sym_sec == toc && toc != NULL)
6983 {
6984 /* Mark this toc entry as referenced by a TLS
6985 code sequence. We can do that now in the
6986 case of R_PPC64_TLS, and after checking for
6987 tls_get_addr for the TOC16 relocs. */
6988 if (toc_ref == NULL)
6989 {
6990 toc_ref = bfd_zmalloc (toc->size / 8);
6991 if (toc_ref == NULL)
6992 goto err_free_rel;
6993 }
6994 if (h != NULL)
6995 value = h->root.u.def.value;
6996 else
6997 value = sym->st_value;
6998 value += rel->r_addend;
6999 BFD_ASSERT (value < toc->size && value % 8 == 0);
7000 toc_ref_index = value / 8;
7001 if (r_type == R_PPC64_TLS)
7002 toc_ref[toc_ref_index] = 1;
7003 }
7004 continue;
7005
411e1bfb
AM		 7006 case R_PPC64_TPREL64:
7007 expecting_tls_get_addr = 0;
30038c59
AM		 7008 if (sec != toc
7009 || toc_ref == NULL
7010 || !toc_ref[rel->r_offset / 8])
7011 continue;
411e1bfb
AM		 7012 if (ok_tprel)
7013 {
7014 /* IE -> LE */
7015 tls_set = TLS_EXPLICIT;
7016 tls_clear = TLS_TPREL;
7017 break;
7018 }
7019 else
7020 continue;
7021
7022 case R_PPC64_DTPMOD64:
7023 expecting_tls_get_addr = 0;
30038c59
AM		 7024 if (sec != toc
7025 || toc_ref == NULL
7026 || !toc_ref[rel->r_offset / 8])
7027 continue;
951fd09b
AM		 7028 if (rel + 1 < relend
7029 && (rel[1].r_info
7030 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7031 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 7032 {
951fd09b 7033 if (ok_tprel)
411e1bfb 7034 /* GD -> LE */
951fd09b 7035 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 7036 else
7037 /* GD -> IE */
951fd09b
AM		 7038 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7039 tls_clear = TLS_GD;
411e1bfb
AM		 7040 }
7041 else
7042 {
951fd09b
AM		 7043 if (!is_local)
7044 continue;
7045
7046 /* LD -> LE */
7047 tls_set = TLS_EXPLICIT;
7048 tls_clear = TLS_LD;
411e1bfb
AM		 7049 }
7050 break;
7051
7052 default:
7053 expecting_tls_get_addr = 0;
7054 continue;
7055 }
7056
7057 if ((tls_set & TLS_EXPLICIT) == 0)
7058 {
7059 struct got_entry *ent;
7060
7061 /* Adjust got entry for this reloc. */
7062 if (h != NULL)
7063 ent = h->got.glist;
7064 else
7065 ent = elf_local_got_ents (ibfd)[r_symndx];
7066
7067 for (; ent != NULL; ent = ent->next)
7068 if (ent->addend == rel->r_addend
e717da7e 7069 && ent->owner == ibfd
e7b938ca 7070 && ent->tls_type == tls_type)
411e1bfb
AM		 7071 break;
7072 if (ent == NULL)
7073 abort ();
7074
7075 if (tls_set == 0)
7076 {
7077 /* We managed to get rid of a got entry. */
7078 if (ent->got.refcount > 0)
7079 ent->got.refcount -= 1;
7080 }
411e1bfb 7081 }
8c1d1bb8 7082 else
411e1bfb 7083 {
8c1d1bb8
AM		 7084 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7085 we'll lose one or two dyn relocs. */
7086 if (!dec_dynrel_count (rel->r_info, sec, info,
7087 NULL, h, sym_sec))
7088 return FALSE;
7089
7090 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7091 {
7092 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7093 NULL, h, sym_sec))
7094 return FALSE;
7095 }
411e1bfb
AM		 7096 }
7097
e7b938ca
AM		 7098 *tls_mask |= tls_set;
7099 *tls_mask &= ~tls_clear;
411e1bfb
AM		 7100 }
7101
7102 if (elf_section_data (sec)->relocs != relstart)
7103 free (relstart);
7104 }
7105
30038c59
AM		 7106 if (toc_ref != NULL)
7107 free (toc_ref);
7108
411e1bfb
AM		 7109 if (locsyms != NULL
7110 && (elf_tdata (ibfd)->symtab_hdr.contents
7111 != (unsigned char *) locsyms))
6cdc0ccc
AM		 7112 {
7113 if (!info->keep_memory)
411e1bfb 7114 free (locsyms);
6cdc0ccc 7115 else
411e1bfb 7116 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 7117 }
1e2f5b6e 7118 }
b34976b6 7119 return TRUE;
1e2f5b6e 7120}
b34976b6 7121
c5614fa4
AM		 7122/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7123 the values of any global symbols in a toc section that has been
7124 edited. Globals in toc sections should be a rarity, so this function
7125 sets a flag if any are found in toc sections other than the one just
7126 edited, so that futher hash table traversals can be avoided. */
7127
7128struct adjust_toc_info
7129{
7130 asection *toc;
7131 unsigned long *skip;
7132 bfd_boolean global_toc_syms;
7133};
7134
7135static bfd_boolean
7136adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7137{
7138 struct ppc_link_hash_entry *eh;
7139 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7140
7141 if (h->root.type == bfd_link_hash_indirect)
7142 return TRUE;
7143
7144 if (h->root.type == bfd_link_hash_warning)
7145 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7146
7147 if (h->root.type != bfd_link_hash_defined
7148 && h->root.type != bfd_link_hash_defweak)
7149 return TRUE;
7150
7151 eh = (struct ppc_link_hash_entry *) h;
7152 if (eh->adjust_done)
7153 return TRUE;
7154
7155 if (eh->elf.root.u.def.section == toc_inf->toc)
7156 {
7157 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7158 if (skip != (unsigned long) -1)
7159 eh->elf.root.u.def.value -= skip;
7160 else
7161 {
7162 (*_bfd_error_handler)
7163 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7164 eh->elf.root.u.def.section = &bfd_abs_section;
7165 eh->elf.root.u.def.value = 0;
7166 }
7167 eh->adjust_done = 1;
7168 }
7169 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7170 toc_inf->global_toc_syms = TRUE;
7171
7172 return TRUE;
7173}
7174
7175/* Examine all relocs referencing .toc sections in order to remove
7176 unused .toc entries. */
7177
7178bfd_boolean
7179ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7180{
7181 bfd *ibfd;
7182 struct adjust_toc_info toc_inf;
7183
7184 toc_inf.global_toc_syms = TRUE;
7185 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7186 {
7187 asection *toc, *sec;
7188 Elf_Internal_Shdr *symtab_hdr;
7189 Elf_Internal_Sym *local_syms;
7190 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7191 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 7192 unsigned long *skip, *drop;
7193 unsigned char *used;
7194 unsigned char *keep, last, some_unused;
7195
7196 toc = bfd_get_section_by_name (ibfd, ".toc");
7197 if (toc == NULL
92b7a70f 7198 || toc->size == 0
c5614fa4
AM		 7199 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7200 || elf_discarded_section (toc))
7201 continue;
7202
7203 local_syms = NULL;
7204 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7205 sym_hashes = elf_sym_hashes (ibfd);
7206
7207 /* Look at sections dropped from the final link. */
7208 skip = NULL;
7209 relstart = NULL;
7210 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7211 {
7212 if (sec->reloc_count == 0
7213 || !elf_discarded_section (sec)
7214 || get_opd_info (sec)
7215 || (sec->flags & SEC_ALLOC) == 0
7216 || (sec->flags & SEC_DEBUGGING) != 0)
7217 continue;
7218
7219 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7220 if (relstart == NULL)
7221 goto error_ret;
7222
7223 /* Run through the relocs to see which toc entries might be
7224 unused. */
7225 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7226 {
7227 enum elf_ppc64_reloc_type r_type;
7228 unsigned long r_symndx;
7229 asection *sym_sec;
7230 struct elf_link_hash_entry *h;
7231 Elf_Internal_Sym *sym;
7232 bfd_vma val;
7233
7234 r_type = ELF64_R_TYPE (rel->r_info);
7235 switch (r_type)
7236 {
7237 default:
7238 continue;
7239
7240 case R_PPC64_TOC16:
7241 case R_PPC64_TOC16_LO:
7242 case R_PPC64_TOC16_HI:
7243 case R_PPC64_TOC16_HA:
7244 case R_PPC64_TOC16_DS:
7245 case R_PPC64_TOC16_LO_DS:
7246 break;
7247 }
7248
7249 r_symndx = ELF64_R_SYM (rel->r_info);
7250 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7251 r_symndx, ibfd))
7252 goto error_ret;
7253
7254 if (sym_sec != toc)
7255 continue;
7256
7257 if (h != NULL)
7258 val = h->root.u.def.value;
7259 else
7260 val = sym->st_value;
7261 val += rel->r_addend;
7262
7263 if (val >= toc->size)
7264 continue;
7265
7266 /* Anything in the toc ought to be aligned to 8 bytes.
7267 If not, don't mark as unused. */
7268 if (val & 7)
7269 continue;
7270
7271 if (skip == NULL)
7272 {
7273 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7274 if (skip == NULL)
7275 goto error_ret;
7276 }
7277
7278 skip[val >> 3] = 1;
7279 }
7280
7281 if (elf_section_data (sec)->relocs != relstart)
7282 free (relstart);
7283 }
7284
7285 if (skip == NULL)
7286 continue;
7287
7288 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7289 if (used == NULL)
7290 {
7291 error_ret:
7292 if (local_syms != NULL
7293 && symtab_hdr->contents != (unsigned char *) local_syms)
7294 free (local_syms);
7295 if (sec != NULL
7296 && relstart != NULL
7297 && elf_section_data (sec)->relocs != relstart)
7298 free (relstart);
7299 if (skip != NULL)
7300 free (skip);
7301 return FALSE;
7302 }
7303
30038c59
AM		 7304 /* Now check all kept sections that might reference the toc.
7305 Check the toc itself last. */
7306 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7307 : ibfd->sections);
c5614fa4 7308 sec != NULL;
c5614fa4 7309 sec = (sec == toc ? NULL
c5614fa4 7310 : sec->next == NULL ? toc
30038c59 7311 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 7312 : sec->next))
7313 {
7314 int repeat;
7315
7316 if (sec->reloc_count == 0
7317 || elf_discarded_section (sec)
7318 || get_opd_info (sec)
7319 || (sec->flags & SEC_ALLOC) == 0
7320 || (sec->flags & SEC_DEBUGGING) != 0)
7321 continue;
7322
7323 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7324 if (relstart == NULL)
7325 goto error_ret;
7326
7327 /* Mark toc entries referenced as used. */
7328 repeat = 0;
7329 do
7330 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7331 {
7332 enum elf_ppc64_reloc_type r_type;
7333 unsigned long r_symndx;
7334 asection *sym_sec;
7335 struct elf_link_hash_entry *h;
7336 Elf_Internal_Sym *sym;
7337 bfd_vma val;
7338
7339 r_type = ELF64_R_TYPE (rel->r_info);
7340 switch (r_type)
7341 {
7342 case R_PPC64_TOC16:
7343 case R_PPC64_TOC16_LO:
7344 case R_PPC64_TOC16_HI:
7345 case R_PPC64_TOC16_HA:
7346 case R_PPC64_TOC16_DS:
7347 case R_PPC64_TOC16_LO_DS:
7348 /* In case we're taking addresses of toc entries. */
7349 case R_PPC64_ADDR64:
7350 break;
7351
7352 default:
7353 continue;
7354 }
7355
7356 r_symndx = ELF64_R_SYM (rel->r_info);
7357 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7358 r_symndx, ibfd))
7359 {
7360 free (used);
7361 goto error_ret;
7362 }
7363
7364 if (sym_sec != toc)
7365 continue;
7366
7367 if (h != NULL)
7368 val = h->root.u.def.value;
7369 else
7370 val = sym->st_value;
7371 val += rel->r_addend;
7372
7373 if (val >= toc->size)
7374 continue;
7375
7376 /* For the toc section, we only mark as used if
7377 this entry itself isn't unused. */
7378 if (sec == toc
7379 && !used[val >> 3]
7380 && (used[rel->r_offset >> 3]
7381 || !skip[rel->r_offset >> 3]))
7382 /* Do all the relocs again, to catch reference
7383 chains. */
7384 repeat = 1;
7385
7386 used[val >> 3] = 1;
7387 }
7388 while (repeat);
7389 }
7390
7391 /* Merge the used and skip arrays. Assume that TOC
7392 doublewords not appearing as either used or unused belong
7393 to to an entry more than one doubleword in size. */
7394 for (drop = skip, keep = used, last = 0, some_unused = 0;
7395 drop < skip + (toc->size + 7) / 8;
7396 ++drop, ++keep)
7397 {
7398 if (*keep)
7399 {
7400 *drop = 0;
7401 last = 0;
7402 }
7403 else if (*drop)
7404 {
7405 some_unused = 1;
7406 last = 1;
7407 }
7408 else
7409 *drop = last;
7410 }
7411
7412 free (used);
7413
7414 if (some_unused)
7415 {
7416 bfd_byte *contents, *src;
7417 unsigned long off;
7418
7419 /* Shuffle the toc contents, and at the same time convert the
7420 skip array from booleans into offsets. */
7421 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7422 goto error_ret;
7423
7424 elf_section_data (toc)->this_hdr.contents = contents;
7425
7426 for (src = contents, off = 0, drop = skip;
7427 src < contents + toc->size;
7428 src += 8, ++drop)
7429 {
7430 if (*drop)
7431 {
7432 *drop = (unsigned long) -1;
7433 off += 8;
7434 }
7435 else if (off != 0)
7436 {
7437 *drop = off;
7438 memcpy (src - off, src, 8);
7439 }
7440 }
7441 toc->rawsize = toc->size;
7442 toc->size = src - contents - off;
7443
92b7a70f
AM		 7444 if (toc->reloc_count != 0)
7445 {
7446 Elf_Internal_Rela *wrel;
7447 bfd_size_type sz;
c5614fa4 7448
92b7a70f
AM		 7449 /* Read toc relocs. */
7450 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7451 TRUE);
7452 if (relstart == NULL)
7453 goto error_ret;
7454
7455 /* Remove unused toc relocs, and adjust those we keep. */
7456 wrel = relstart;
7457 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7458 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7459 {
7460 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7461 wrel->r_info = rel->r_info;
7462 wrel->r_addend = rel->r_addend;
7463 ++wrel;
7464 }
8c1d1bb8
AM		 7465 else if (!dec_dynrel_count (rel->r_info, toc, info,
7466 &local_syms, NULL, NULL))
7467 goto error_ret;
35090471 7468
92b7a70f
AM		 7469 toc->reloc_count = wrel - relstart;
7470 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7471 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7472 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7473 }
c5614fa4
AM		 7474
7475 /* Adjust addends for relocs against the toc section sym. */
7476 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7477 {
7478 if (sec->reloc_count == 0
7479 || elf_discarded_section (sec))
7480 continue;
7481
7482 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7483 TRUE);
7484 if (relstart == NULL)
7485 goto error_ret;
7486
7487 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7488 {
7489 enum elf_ppc64_reloc_type r_type;
7490 unsigned long r_symndx;
7491 asection *sym_sec;
7492 struct elf_link_hash_entry *h;
7493 Elf_Internal_Sym *sym;
7494
7495 r_type = ELF64_R_TYPE (rel->r_info);
7496 switch (r_type)
7497 {
7498 default:
7499 continue;
7500
7501 case R_PPC64_TOC16:
7502 case R_PPC64_TOC16_LO:
7503 case R_PPC64_TOC16_HI:
7504 case R_PPC64_TOC16_HA:
7505 case R_PPC64_TOC16_DS:
7506 case R_PPC64_TOC16_LO_DS:
7507 case R_PPC64_ADDR64:
7508 break;
7509 }
7510
7511 r_symndx = ELF64_R_SYM (rel->r_info);
7512 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7513 r_symndx, ibfd))
7514 goto error_ret;
7515
7516 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7517 continue;
7518
7519 rel->r_addend -= skip[rel->r_addend >> 3];
7520 }
7521 }
7522
7523 /* We shouldn't have local or global symbols defined in the TOC,
7524 but handle them anyway. */
7525 if (local_syms != NULL)
7526 {
7527 Elf_Internal_Sym *sym;
7528
7529 for (sym = local_syms;
7530 sym < local_syms + symtab_hdr->sh_info;
7531 ++sym)
7532 if (sym->st_shndx != SHN_UNDEF
7533 && (sym->st_shndx < SHN_LORESERVE
7534 || sym->st_shndx > SHN_HIRESERVE)
7535 && sym->st_value != 0
7536 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7537 {
7538 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7539 sym->st_value -= skip[sym->st_value >> 3];
7540 else
7541 {
7542 (*_bfd_error_handler)
7543 (_("%s defined in removed toc entry"),
26c61ae5
L		 7544 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7545 NULL));
c5614fa4
AM		 7546 sym->st_value = 0;
7547 sym->st_shndx = SHN_ABS;
7548 }
7549 symtab_hdr->contents = (unsigned char *) local_syms;
7550 }
7551 }
7552
7553 /* Finally, adjust any global syms defined in the toc. */
7554 if (toc_inf.global_toc_syms)
7555 {
7556 toc_inf.toc = toc;
7557 toc_inf.skip = skip;
7558 toc_inf.global_toc_syms = FALSE;
7559 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7560 &toc_inf);
7561 }
7562 }
7563
7564 if (local_syms != NULL
7565 && symtab_hdr->contents != (unsigned char *) local_syms)
7566 {
7567 if (!info->keep_memory)
7568 free (local_syms);
7569 else
7570 symtab_hdr->contents = (unsigned char *) local_syms;
7571 }
7572 free (skip);
7573 }
7574
7575 return TRUE;
7576}
7577
65f38f15
AM		 7578/* Allocate space in .plt, .got and associated reloc sections for
7579 dynamic relocs. */
5bd4f169 7580
b34976b6 7581static bfd_boolean
4ce794b7 7582allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7583{
65f38f15
AM		 7584 struct bfd_link_info *info;
7585 struct ppc_link_hash_table *htab;
5bd4f169 7586 asection *s;
65f38f15
AM		 7587 struct ppc_link_hash_entry *eh;
7588 struct ppc_dyn_relocs *p;
411e1bfb 7589 struct got_entry *gent;
5bd4f169 7590
e92d460e 7591 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7592 return TRUE;
5bd4f169 7593
e92d460e
AM		 7594 if (h->root.type == bfd_link_hash_warning)
7595 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7596
65f38f15
AM		 7597 info = (struct bfd_link_info *) inf;
7598 htab = ppc_hash_table (info);
5bd4f169 7599
65f38f15 7600 if (htab->elf.dynamic_sections_created
411e1bfb 7601 && h->dynindx != -1
9c7a29a3 7602 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7603 {
411e1bfb
AM		 7604 struct plt_entry *pent;
7605 bfd_boolean doneone = FALSE;
7606 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7607 if (pent->plt.refcount > 0)
7608 {
411e1bfb
AM		 7609 /* If this is the first .plt entry, make room for the special
7610 first entry. */
4ce794b7 7611 s = htab->plt;
eea6121a
AM		 7612 if (s->size == 0)
7613 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7614
eea6121a 7615 pent->plt.offset = s->size;
411e1bfb
AM		 7616
7617 /* Make room for this entry. */
eea6121a 7618 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7619
7620 /* Make room for the .glink code. */
4ce794b7 7621 s = htab->glink;
eea6121a
AM		 7622 if (s->size == 0)
7623 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7624 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7625 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7626 s->size += 4;
7627 s->size += 2*4;
411e1bfb
AM		 7628
7629 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7630 s = htab->relplt;
eea6121a 7631 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7632 doneone = TRUE;
7633 }
7634 else
7635 pent->plt.offset = (bfd_vma) -1;
7636 if (!doneone)
65f38f15 7637 {
411e1bfb 7638 h->plt.plist = NULL;
f5385ebf 7639 h->needs_plt = 0;
65f38f15
AM		 7640 }
7641 }
7642 else
7643 {
411e1bfb 7644 h->plt.plist = NULL;
f5385ebf 7645 h->needs_plt = 0;
65f38f15
AM		 7646 }
7647
951fd09b
AM		 7648 eh = (struct ppc_link_hash_entry *) h;
7649 /* Run through the TLS GD got entries first if we're changing them
7650 to TPREL. */
e7b938ca 7651 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7652 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7653 if (gent->got.refcount > 0
7654 && (gent->tls_type & TLS_GD) != 0)
7655 {
7656 /* This was a GD entry that has been converted to TPREL. If
7657 there happens to be a TPREL entry we can use that one. */
7658 struct got_entry *ent;
7659 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7660 if (ent->got.refcount > 0
7661 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7662 && ent->addend == gent->addend
7663 && ent->owner == gent->owner)
951fd09b
AM		 7664 {
7665 gent->got.refcount = 0;
7666 break;
7667 }
7668
7669 /* If not, then we'll be using our own TPREL entry. */
7670 if (gent->got.refcount != 0)
7671 gent->tls_type = TLS_TLS | TLS_TPREL;
7672 }
7673
411e1bfb
AM		 7674 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7675 if (gent->got.refcount > 0)
7676 {
951fd09b
AM		 7677 bfd_boolean dyn;
7678
411e1bfb 7679 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7680 Undefined weak syms won't yet be marked as dynamic,
7681 nor will all TLS symbols. */
411e1bfb 7682 if (h->dynindx == -1
f5385ebf 7683 && !h->forced_local)
411e1bfb 7684 {
c152c796 7685 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7686 return FALSE;
7687 }
65f38f15 7688
d881513a 7689 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7690 && !h->def_dynamic)
411e1bfb 7691 {
e717da7e 7692 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7693 continue;
411e1bfb 7694 }
951fd09b 7695
e717da7e 7696 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7697 gent->got.offset = s->size;
7698 s->size
d881513a 7699 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7700 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7701 if ((info->shared
7702 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7703 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7704 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7705 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7706 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7707 ? 2 * sizeof (Elf64_External_Rela)
7708 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7709 }
7710 else
7711 gent->got.offset = (bfd_vma) -1;
65f38f15 7712
65f38f15 7713 if (eh->dyn_relocs == NULL)
b34976b6 7714 return TRUE;
65f38f15
AM		 7715
7716 /* In the shared -Bsymbolic case, discard space allocated for
7717 dynamic pc-relative relocs against symbols which turn out to be
7718 defined in regular objects. For the normal shared case, discard
7719 space for relocs that have become local due to symbol visibility
7720 changes. */
7721
7722 if (info->shared)
7723 {
9c7a29a3
AM		 7724 /* Relocs that use pc_count are those that appear on a call insn,
7725 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7726 generated via assembly. We want calls to protected symbols to
7727 resolve directly to the function rather than going via the plt.
7728 If people want function pointer comparisons to work as expected
7729 then they should avoid writing weird assembly. */
09695f56 7730 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7731 {
7732 struct ppc_dyn_relocs **pp;
7733
7734 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7735 {
65f38f15
AM		 7736 p->count -= p->pc_count;
7737 p->pc_count = 0;
7738 if (p->count == 0)
7739 *pp = p->next;
7740 else
7741 pp = &p->next;
5bd4f169 7742 }
65f38f15 7743 }
4e795f50
AM		 7744
7745 /* Also discard relocs on undefined weak syms with non-default
7746 visibility. */
cab87ef9
AM		 7747 if (eh->dyn_relocs != NULL
7748 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 7749 {
7750 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7751 eh->dyn_relocs = NULL;
7752
7753 /* Make sure this symbol is output as a dynamic symbol.
7754 Undefined weak syms won't yet be marked as dynamic. */
7755 else if (h->dynindx == -1
7756 && !h->forced_local)
7757 {
7758 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7759 return FALSE;
7760 }
7761 }
65f38f15 7762 }
f4656909 7763 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7764 {
7765 /* For the non-shared case, discard space for relocs against
7766 symbols which turn out to need copy relocs or are not
7767 dynamic. */
7768
f5385ebf
AM		 7769 if (!h->non_got_ref
7770 && h->def_dynamic
7771 && !h->def_regular)
65f38f15
AM		 7772 {
7773 /* Make sure this symbol is output as a dynamic symbol.
7774 Undefined weak syms won't yet be marked as dynamic. */
7775 if (h->dynindx == -1
f5385ebf 7776 && !h->forced_local)
65f38f15 7777 {
c152c796 7778 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7779 return FALSE;
65f38f15
AM		 7780 }
7781
7782 /* If that succeeded, we know we'll be keeping all the
7783 relocs. */
7784 if (h->dynindx != -1)
7785 goto keep;
7786 }
7787
7788 eh->dyn_relocs = NULL;
7789
ec338859 7790 keep: ;
65f38f15
AM		 7791 }
7792
7793 /* Finally, allocate space. */
7794 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7795 {
7796 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7797 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7798 }
7799
b34976b6 7800 return TRUE;
65f38f15
AM		 7801}
7802
7803/* Find any dynamic relocs that apply to read-only sections. */
7804
b34976b6 7805static bfd_boolean
4ce794b7 7806readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7807{
7808 struct ppc_link_hash_entry *eh;
7809 struct ppc_dyn_relocs *p;
7810
e92d460e
AM		 7811 if (h->root.type == bfd_link_hash_warning)
7812 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7813
65f38f15
AM		 7814 eh = (struct ppc_link_hash_entry *) h;
7815 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7816 {
7817 asection *s = p->sec->output_section;
7818
7819 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7820 {
4ce794b7 7821 struct bfd_link_info *info = inf;
65f38f15
AM		 7822
7823 info->flags |= DF_TEXTREL;
7824
7825 /* Not an error, just cut short the traversal. */
b34976b6 7826 return FALSE;
65f38f15
AM		 7827 }
7828 }
b34976b6 7829 return TRUE;
65f38f15
AM		 7830}
7831
7832/* Set the sizes of the dynamic sections. */
7833
b34976b6 7834static bfd_boolean
4ce794b7
AM		 7835ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7836 struct bfd_link_info *info)
65f38f15
AM		 7837{
7838 struct ppc_link_hash_table *htab;
7839 bfd *dynobj;
7840 asection *s;
b34976b6 7841 bfd_boolean relocs;
65f38f15
AM		 7842 bfd *ibfd;
7843
7844 htab = ppc_hash_table (info);
7845 dynobj = htab->elf.dynobj;
7846 if (dynobj == NULL)
7847 abort ();
7848
7849 if (htab->elf.dynamic_sections_created)
7850 {
7851 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7852 if (info->executable)
65f38f15
AM		 7853 {
7854 s = bfd_get_section_by_name (dynobj, ".interp");
7855 if (s == NULL)
7856 abort ();
eea6121a 7857 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7858 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7859 }
7860 }
7861
7862 /* Set up .got offsets for local syms, and space for local dynamic
7863 relocs. */
7864 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7865 {
411e1bfb
AM		 7866 struct got_entry **lgot_ents;
7867 struct got_entry **end_lgot_ents;
e7b938ca 7868 char *lgot_masks;
65f38f15
AM		 7869 bfd_size_type locsymcount;
7870 Elf_Internal_Shdr *symtab_hdr;
7871 asection *srel;
7872
ee75fd95 7873 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7874 continue;
7875
e717da7e
AM		 7876 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7877 {
7878 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7879 ppc64_tlsld_got (ibfd)->offset = s->size;
7880 s->size += 16;
e717da7e
AM		 7881 if (info->shared)
7882 {
7883 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7884 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7885 }
7886 }
7887 else
7888 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7889
65f38f15
AM		 7890 for (s = ibfd->sections; s != NULL; s = s->next)
7891 {
ec338859 7892 struct ppc_dyn_relocs *p;
65f38f15 7893
6edfbbad 7894 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 7895 {
ec338859
AM		 7896 if (!bfd_is_abs_section (p->sec)
7897 && bfd_is_abs_section (p->sec->output_section))
7898 {
7899 /* Input section has been discarded, either because
7900 it is a copy of a linkonce section or due to
7901 linker script /DISCARD/, so we'll be discarding
7902 the relocs too. */
7903 }
248866a8 7904 else if (p->count != 0)
ec338859
AM		 7905 {
7906 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7907 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7908 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7909 info->flags |= DF_TEXTREL;
ec338859 7910 }
65f38f15
AM		 7911 }
7912 }
7913
411e1bfb
AM		 7914 lgot_ents = elf_local_got_ents (ibfd);
7915 if (!lgot_ents)
65f38f15
AM		 7916 continue;
7917
7918 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7919 locsymcount = symtab_hdr->sh_info;
411e1bfb 7920 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7921 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7922 s = ppc64_elf_tdata (ibfd)->got;
7923 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7924 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7925 {
411e1bfb
AM		 7926 struct got_entry *ent;
7927
7928 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7929 if (ent->got.refcount > 0)
7930 {
e7b938ca 7931 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7932 {
e717da7e 7933 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7934 {
eea6121a
AM		 7935 ppc64_tlsld_got (ibfd)->offset = s->size;
7936 s->size += 16;
411e1bfb 7937 if (info->shared)
eea6121a 7938 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7939 }
e717da7e 7940 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7941 }
7942 else
7943 {
eea6121a 7944 ent->got.offset = s->size;
e7b938ca 7945 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7946 {
eea6121a 7947 s->size += 16;
411e1bfb 7948 if (info->shared)
eea6121a 7949 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7950 }
7951 else
7952 {
eea6121a 7953 s->size += 8;
411e1bfb 7954 if (info->shared)
eea6121a 7955 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7956 }
7957 }
7958 }
7959 else
7960 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7961 }
7962 }
7963
7964 /* Allocate global sym .plt and .got entries, and space for global
7965 sym dynamic relocs. */
4ce794b7 7966 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7967
7968 /* We now have determined the sizes of the various dynamic sections.
7969 Allocate memory for them. */
b34976b6 7970 relocs = FALSE;
65f38f15
AM		 7971 for (s = dynobj->sections; s != NULL; s = s->next)
7972 {
7973 if ((s->flags & SEC_LINKER_CREATED) == 0)
7974 continue;
7975
4ce794b7 7976 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7977 /* These haven't been allocated yet; don't strip. */
7978 continue;
e717da7e
AM		 7979 else if (s == htab->got
7980 || s == htab->plt
c456f082
AM		 7981 || s == htab->glink
7982 || s == htab->dynbss)
65f38f15
AM		 7983 {
7984 /* Strip this section if we don't need it; see the
7985 comment below. */
5bd4f169 7986 }
0112cd26 7987 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 7988 {
c456f082 7989 if (s->size != 0)
5bd4f169 7990 {
4ce794b7 7991 if (s != htab->relplt)
b34976b6 7992 relocs = TRUE;
5bd4f169
AM		 7993
7994 /* We use the reloc_count field as a counter if we need
7995 to copy relocs into the output file. */
7996 s->reloc_count = 0;
7997 }
7998 }
65f38f15 7999 else
5bd4f169
AM		 8000 {
8001 /* It's not one of our sections, so don't allocate space. */
8002 continue;
8003 }
8004
eea6121a 8005 if (s->size == 0)
5bd4f169 8006 {
c456f082
AM		 8007 /* If we don't need this section, strip it from the
8008 output file. This is mostly to handle .rela.bss and
8009 .rela.plt. We must create both sections in
8010 create_dynamic_sections, because they must be created
8011 before the linker maps input sections to output
8012 sections. The linker does that before
8013 adjust_dynamic_symbol is called, and it is that
8014 function which decides whether anything needs to go
8015 into these sections. */
8423293d 8016 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 8017 continue;
8018 }
8019
c456f082 8020 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 8021 continue;
8022
65f38f15
AM		 8023 /* Allocate memory for the section contents. We use bfd_zalloc
8024 here in case unused entries are not reclaimed before the
8025 section's contents are written out. This should not happen,
411e1bfb
AM		 8026 but this way if it does we get a R_PPC64_NONE reloc in .rela
8027 sections instead of garbage.
8028 We also rely on the section contents being zero when writing
8029 the GOT. */
eea6121a 8030 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8031 if (s->contents == NULL)
b34976b6 8032 return FALSE;
5bd4f169
AM		 8033 }
8034
e717da7e
AM		 8035 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8036 {
ee75fd95 8037 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 8038 continue;
8039
e717da7e
AM		 8040 s = ppc64_elf_tdata (ibfd)->got;
8041 if (s != NULL && s != htab->got)
8042 {
eea6121a 8043 if (s->size == 0)
8423293d 8044 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8045 else
8046 {
eea6121a 8047 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8048 if (s->contents == NULL)
8049 return FALSE;
8050 }
8051 }
8052 s = ppc64_elf_tdata (ibfd)->relgot;
8053 if (s != NULL)
8054 {
eea6121a 8055 if (s->size == 0)
8423293d 8056 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8057 else
8058 {
eea6121a 8059 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8060 if (s->contents == NULL)
8061 return FALSE;
8062 relocs = TRUE;
8063 s->reloc_count = 0;
8064 }
8065 }
8066 }
8067
e86ce104 8068 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 8069 {
8070 /* Add some entries to the .dynamic section. We fill in the
8071 values later, in ppc64_elf_finish_dynamic_sections, but we
8072 must add the entries now so that we get the correct size for
8073 the .dynamic section. The DT_DEBUG entry is filled in by the
8074 dynamic linker and used by the debugger. */
dc810e39 8075#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8076 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8077
36af4a4e 8078 if (info->executable)
5bd4f169 8079 {
dc810e39 8080 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8081 return FALSE;
5bd4f169
AM		 8082 }
8083
eea6121a 8084 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8085 {
dc810e39
AM		 8086 if (!add_dynamic_entry (DT_PLTGOT, 0)
8087 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8088 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 8089 || !add_dynamic_entry (DT_JMPREL, 0)
8090 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8091 return FALSE;
5bd4f169
AM		 8092 }
8093
19397422
AM		 8094 if (NO_OPD_RELOCS)
8095 {
8096 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8097 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8098 return FALSE;
19397422
AM		 8099 }
8100
5bd4f169
AM		 8101 if (relocs)
8102 {
dc810e39
AM		 8103 if (!add_dynamic_entry (DT_RELA, 0)
8104 || !add_dynamic_entry (DT_RELASZ, 0)
8105 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8106 return FALSE;
5bd4f169 8107
65f38f15
AM		 8108 /* If any dynamic relocs apply to a read-only section,
8109 then we need a DT_TEXTREL entry. */
248866a8 8110 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8111 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8112
65f38f15 8113 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8114 {
65f38f15 8115 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8116 return FALSE;
5bd4f169 8117 }
5bd4f169 8118 }
5bd4f169 8119 }
65f38f15 8120#undef add_dynamic_entry
5bd4f169 8121
b34976b6 8122 return TRUE;
5bd4f169
AM		 8123}
8124
721956f4 8125/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8126
4ce794b7
AM		 8127static inline enum ppc_stub_type
8128ppc_type_of_stub (asection *input_sec,
8129 const Elf_Internal_Rela *rel,
8130 struct ppc_link_hash_entry **hash,
8131 bfd_vma destination)
5bd4f169 8132{
721956f4
AM		 8133 struct ppc_link_hash_entry *h = *hash;
8134 bfd_vma location;
8135 bfd_vma branch_offset;
8136 bfd_vma max_branch_offset;
4ce794b7 8137 enum elf_ppc64_reloc_type r_type;
5bd4f169 8138
721956f4
AM		 8139 if (h != NULL)
8140 {
7fe2b9a6
AM		 8141 struct ppc_link_hash_entry *fdh = h;
8142 if (fdh->oh != NULL
8143 && fdh->oh->is_func_descriptor)
8144 fdh = fdh->oh;
8387904d 8145
7fe2b9a6 8146 if (fdh->elf.dynindx != -1)
5bd4f169 8147 {
411e1bfb 8148 struct plt_entry *ent;
8387904d 8149
7fe2b9a6 8150 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 8151 if (ent->addend == rel->r_addend
8152 && ent->plt.offset != (bfd_vma) -1)
8153 {
7fe2b9a6 8154 *hash = fdh;
411e1bfb
AM		 8155 return ppc_stub_plt_call;
8156 }
5bd4f169
AM		 8157 }
8158
7fe2b9a6
AM		 8159 /* Here, we know we don't have a plt entry. If we don't have a
8160 either a defined function descriptor or a defined entry symbol
8161 in a regular object file, then it is pointless trying to make
8162 any other type of stub. */
8163 if (!((fdh->elf.root.type == bfd_link_hash_defined
8164 || fdh->elf.root.type == bfd_link_hash_defweak)
8165 && fdh->elf.root.u.def.section->output_section != NULL)
8166 && !((h->elf.root.type == bfd_link_hash_defined
8167 || h->elf.root.type == bfd_link_hash_defweak)
8168 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8169 return ppc_stub_none;
5d1634d7 8170 }
5d1634d7 8171
721956f4
AM		 8172 /* Determine where the call point is. */
8173 location = (input_sec->output_offset
8174 + input_sec->output_section->vma
8175 + rel->r_offset);
5d1634d7 8176
721956f4
AM		 8177 branch_offset = destination - location;
8178 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8179
721956f4
AM		 8180 /* Determine if a long branch stub is needed. */
8181 max_branch_offset = 1 << 25;
4ce794b7 8182 if (r_type != R_PPC64_REL24)
721956f4 8183 max_branch_offset = 1 << 15;
5d1634d7 8184
721956f4
AM		 8185 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8186 /* We need a stub. Figure out whether a long_branch or plt_branch
8187 is needed later. */
8188 return ppc_stub_long_branch;
5d1634d7 8189
721956f4 8190 return ppc_stub_none;
5d1634d7
AM		 8191}
8192
8193/* Build a .plt call stub. */
8194
4ce794b7
AM		 8195static inline bfd_byte *
8196build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 8197{
8198#define PPC_LO(v) ((v) & 0xffff)
8199#define PPC_HI(v) (((v) >> 16) & 0xffff)
8200#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8201
ac2df442
AM		 8202 if (PPC_HA (offset) != 0)
8203 {
8204 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8205 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8206 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8207 if (PPC_HA (offset + 16) != PPC_HA (offset))
8208 {
8209 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8210 offset = 0;
8211 }
8212 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8213 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8214 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8215 bfd_put_32 (obfd, BCTR, p), p += 4;
8216 }
8217 else
8218 {
8219 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8220 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8221 if (PPC_HA (offset + 16) != PPC_HA (offset))
8222 {
8223 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8224 offset = 0;
8225 }
8226 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8227 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8228 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8229 bfd_put_32 (obfd, BCTR, p), p += 4;
8230 }
5d1634d7
AM		 8231 return p;
8232}
8233
b34976b6 8234static bfd_boolean
4ce794b7 8235ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8236{
721956f4
AM		 8237 struct ppc_stub_hash_entry *stub_entry;
8238 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 8239 struct bfd_link_info *info;
8240 struct ppc_link_hash_table *htab;
721956f4
AM		 8241 bfd_byte *loc;
8242 bfd_byte *p;
8243 unsigned int indx;
411e1bfb 8244 struct plt_entry *ent;
ee75fd95 8245 bfd_vma dest, off;
721956f4 8246 int size;
5d1634d7 8247
721956f4
AM		 8248 /* Massage our args to the form they really have. */
8249 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8250 info = in_arg;
5d1634d7 8251
5d1634d7
AM		 8252 htab = ppc_hash_table (info);
8253
721956f4 8254 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8255 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8256 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8257
4ce794b7 8258 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8259 switch (stub_entry->stub_type)
5d1634d7 8260 {
721956f4 8261 case ppc_stub_long_branch:
ad8e1ba5 8262 case ppc_stub_long_branch_r2off:
721956f4 8263 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 8264 off = dest = (stub_entry->target_value
8265 + stub_entry->target_section->output_offset
8266 + stub_entry->target_section->output_section->vma);
5d1634d7 8267
721956f4
AM		 8268 /* And this is where we are coming from. */
8269 off -= (stub_entry->stub_offset
97b639ba
AM		 8270 + stub_entry->stub_sec->output_offset
8271 + stub_entry->stub_sec->output_section->vma);
e86ce104 8272
ac2df442
AM		 8273 size = 4;
8274 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM		 8275 {
8276 bfd_vma r2off;
8277
8278 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8279 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8280 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8281 loc += 4;
ac2df442
AM		 8282 size = 12;
8283 if (PPC_HA (r2off) != 0)
8284 {
8285 size = 16;
8286 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8287 loc += 4;
8288 }
97b639ba 8289 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 8290 loc += 4;
ac2df442 8291 off -= size - 4;
ad8e1ba5 8292 }
97b639ba 8293 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8294
5c3dead3
AM		 8295 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8296 {
8297 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8298 stub_entry->root.string);
8299 htab->stub_error = TRUE;
8300 return FALSE;
8301 }
ee75fd95
AM		 8302
8303 if (info->emitrelocations)
8304 {
8305 Elf_Internal_Rela *relocs, *r;
8306 struct bfd_elf_section_data *elfsec_data;
8307
8308 elfsec_data = elf_section_data (stub_entry->stub_sec);
8309 relocs = elfsec_data->relocs;
8310 if (relocs == NULL)
8311 {
8312 bfd_size_type relsize;
8313 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8314 relocs = bfd_alloc (htab->stub_bfd, relsize);
8315 if (relocs == NULL)
8316 return FALSE;
8317 elfsec_data->relocs = relocs;
8318 elfsec_data->rel_hdr.sh_size = relsize;
8319 elfsec_data->rel_hdr.sh_entsize = 24;
8320 stub_entry->stub_sec->reloc_count = 0;
8321 }
8322 r = relocs + stub_entry->stub_sec->reloc_count;
8323 stub_entry->stub_sec->reloc_count += 1;
8324 r->r_offset = loc - stub_entry->stub_sec->contents;
8325 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8326 r->r_addend = dest;
8327 if (stub_entry->h != NULL)
8328 {
8329 struct elf_link_hash_entry **hashes;
8330 unsigned long symndx;
8331 struct ppc_link_hash_entry *h;
8332
8333 hashes = elf_sym_hashes (htab->stub_bfd);
8334 if (hashes == NULL)
8335 {
8336 bfd_size_type hsize;
8337
8338 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8339 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8340 if (hashes == NULL)
8341 return FALSE;
8342 elf_sym_hashes (htab->stub_bfd) = hashes;
8343 htab->stub_globals = 1;
8344 }
8345 symndx = htab->stub_globals++;
8346 h = stub_entry->h;
8347 hashes[symndx] = &h->elf;
8348 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8349 if (h->oh != NULL && h->oh->is_func)
8350 h = h->oh;
8351 if (h->elf.root.u.def.section != stub_entry->target_section)
8352 /* H is an opd symbol. The addend must be zero. */
8353 r->r_addend = 0;
8354 else
8355 {
8356 off = (h->elf.root.u.def.value
8357 + h->elf.root.u.def.section->output_offset
8358 + h->elf.root.u.def.section->output_section->vma);
8359 r->r_addend -= off;
8360 }
8361 }
8362 }
721956f4 8363 break;
e86ce104 8364
721956f4 8365 case ppc_stub_plt_branch:
ad8e1ba5 8366 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8367 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8368 stub_entry->root.string + 9,
b34976b6 8369 FALSE, FALSE);
721956f4
AM		 8370 if (br_entry == NULL)
8371 {
8372 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8373 stub_entry->root.string);
b34976b6
AM		 8374 htab->stub_error = TRUE;
8375 return FALSE;
721956f4
AM		 8376 }
8377
8378 off = (stub_entry->target_value
8379 + stub_entry->target_section->output_offset
8380 + stub_entry->target_section->output_section->vma);
8381
4ce794b7
AM		 8382 bfd_put_64 (htab->brlt->owner, off,
8383 htab->brlt->contents + br_entry->offset);
721956f4 8384
ee75fd95 8385 if (htab->relbrlt != NULL)
721956f4
AM		 8386 {
8387 /* Create a reloc for the branch lookup table entry. */
8388 Elf_Internal_Rela rela;
ad8e1ba5 8389 bfd_byte *rl;
5d1634d7 8390
721956f4 8391 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8392 + htab->brlt->output_offset
8393 + htab->brlt->output_section->vma);
721956f4
AM		 8394 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8395 rela.r_addend = off;
8396
4ce794b7
AM		 8397 rl = htab->relbrlt->contents;
8398 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8399 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4 8400 }
84f5d08e
AM		 8401 else if (info->emitrelocations)
8402 {
8403 Elf_Internal_Rela *relocs, *r;
8404 struct bfd_elf_section_data *elfsec_data;
8405
8406 elfsec_data = elf_section_data (htab->brlt);
8407 relocs = elfsec_data->relocs;
8408 if (relocs == NULL)
8409 {
8410 bfd_size_type relsize;
8411 relsize = htab->brlt->reloc_count * sizeof (*relocs);
8412 relocs = bfd_alloc (htab->brlt->owner, relsize);
8413 if (relocs == NULL)
8414 return FALSE;
8415 elfsec_data->relocs = relocs;
8416 elfsec_data->rel_hdr.sh_size = relsize;
8417 elfsec_data->rel_hdr.sh_entsize = 24;
8418 htab->brlt->reloc_count = 0;
8419 }
8420 r = relocs + htab->brlt->reloc_count;
8421 htab->brlt->reloc_count += 1;
8422 r->r_offset = (br_entry->offset
8423 + htab->brlt->output_offset
8424 + htab->brlt->output_section->vma);
8425 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8426 r->r_addend = off;
8427 }
721956f4
AM		 8428
8429 off = (br_entry->offset
4ce794b7
AM		 8430 + htab->brlt->output_offset
8431 + htab->brlt->output_section->vma
8432 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8433 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8434
ad8e1ba5 8435 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8436 {
8437 (*_bfd_error_handler)
e86ce104 8438 (_("linkage table error against `%s'"),
721956f4 8439 stub_entry->root.string);
5d1634d7 8440 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8441 htab->stub_error = TRUE;
8442 return FALSE;
5d1634d7 8443 }
41bd81ab 8444
721956f4 8445 indx = off;
ad8e1ba5
AM		 8446 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8447 {
ac2df442
AM		 8448 if (PPC_HA (indx) != 0)
8449 {
8450 size = 16;
8451 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8452 loc += 4;
8453 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8454 }
8455 else
8456 {
8457 size = 12;
8458 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
8459 }
ad8e1ba5
AM		 8460 }
8461 else
8462 {
8463 bfd_vma r2off;
8464
8465 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8466 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8467 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8468 loc += 4;
ac2df442
AM		 8469 size = 20;
8470 if (PPC_HA (indx) != 0)
8471 {
8472 size += 4;
8473 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8474 loc += 4;
8475 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8476 loc += 4;
8477 }
8478 else
8479 {
8480 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
8481 loc += 4;
8482 }
8483
8484 if (PPC_HA (r2off) != 0)
8485 {
8486 size += 4;
8487 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8488 loc += 4;
8489 }
97b639ba 8490 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8491 }
8492 loc += 4;
97b639ba 8493 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8494 loc += 4;
97b639ba 8495 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8496 break;
5d1634d7 8497
721956f4 8498 case ppc_stub_plt_call:
c862ae31
AM		 8499 /* Do the best we can for shared libraries built without
8500 exporting ".foo" for each "foo". This can happen when symbol
8501 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8502 if (stub_entry->h->oh != NULL
8503 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8504 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8505 {
8506 /* Point the symbol at the stub. There may be multiple stubs,
8507 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8508 defined somewhere. Maybe defining the symbol in the stub
8509 section is a silly idea. If we didn't do this, htab->top_id
8510 could disappear. */
34814b9f
AM		 8511 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8512 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8513 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8514 }
8515
721956f4 8516 /* Now build the stub. */
411e1bfb
AM		 8517 off = (bfd_vma) -1;
8518 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8519 if (ent->addend == stub_entry->addend)
8520 {
8521 off = ent->plt.offset;
8522 break;
8523 }
721956f4
AM		 8524 if (off >= (bfd_vma) -2)
8525 abort ();
8526
8527 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8528 off += (htab->plt->output_offset
8529 + htab->plt->output_section->vma
8530 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8531 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8532
ad8e1ba5 8533 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8534 {
8535 (*_bfd_error_handler)
8536 (_("linkage table error against `%s'"),
8537 stub_entry->h->elf.root.root.string);
8538 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8539 htab->stub_error = TRUE;
8540 return FALSE;
721956f4
AM		 8541 }
8542
97b639ba 8543 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8544 size = p - loc;
8545 break;
8546
8547 default:
8548 BFD_FAIL ();
b34976b6 8549 return FALSE;
721956f4
AM		 8550 }
8551
eea6121a 8552 stub_entry->stub_sec->size += size;
97b639ba 8553
ee75fd95 8554 if (htab->emit_stub_syms)
97b639ba
AM		 8555 {
8556 struct elf_link_hash_entry *h;
ee75fd95
AM		 8557 size_t len1, len2;
8558 char *name;
8559 const char *const stub_str[] = { "long_branch",
8560 "long_branch_r2off",
8561 "plt_branch",
8562 "plt_branch_r2off",
8563 "plt_call" };
8564
8565 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8566 len2 = strlen (stub_entry->root.string);
8567 name = bfd_malloc (len1 + len2 + 2);
8568 if (name == NULL)
8569 return FALSE;
8570 memcpy (name, stub_entry->root.string, 9);
8571 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8572 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8573 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8574 if (h == NULL)
8575 return FALSE;
8576 if (h->root.type == bfd_link_hash_new)
8577 {
8578 h->root.type = bfd_link_hash_defined;
8579 h->root.u.def.section = stub_entry->stub_sec;
8580 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8581 h->ref_regular = 1;
8582 h->def_regular = 1;
8583 h->ref_regular_nonweak = 1;
8584 h->forced_local = 1;
8585 h->non_elf = 0;
97b639ba
AM		 8586 }
8587 }
8588
b34976b6 8589 return TRUE;
721956f4
AM		 8590}
8591
8592/* As above, but don't actually build the stub. Just bump offset so
8593 we know stub section sizes, and select plt_branch stubs where
8594 long_branch stubs won't do. */
8595
b34976b6 8596static bfd_boolean
4ce794b7 8597ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8598{
8599 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8600 struct bfd_link_info *info;
721956f4
AM		 8601 struct ppc_link_hash_table *htab;
8602 bfd_vma off;
8603 int size;
8604
8605 /* Massage our args to the form they really have. */
8606 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8607 info = in_arg;
8608
8609 htab = ppc_hash_table (info);
721956f4
AM		 8610
8611 if (stub_entry->stub_type == ppc_stub_plt_call)
8612 {
411e1bfb 8613 struct plt_entry *ent;
58ac9f71 8614 off = (bfd_vma) -1;
411e1bfb
AM		 8615 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8616 if (ent->addend == stub_entry->addend)
8617 {
8618 off = ent->plt.offset & ~(bfd_vma) 1;
8619 break;
8620 }
58ac9f71 8621 if (off >= (bfd_vma) -2)
411e1bfb 8622 abort ();
4ce794b7
AM		 8623 off += (htab->plt->output_offset
8624 + htab->plt->output_section->vma
8625 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8626 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8627
ad8e1ba5 8628 size = PLT_CALL_STUB_SIZE;
ac2df442
AM		 8629 if (PPC_HA (off) == 0)
8630 size -= 4;
4ce794b7 8631 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8632 size += 4;
8633 }
8634 else
8635 {
ad8e1ba5
AM		 8636 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8637 variants. */
ac2df442
AM		 8638 bfd_vma r2off = 0;
8639
721956f4
AM		 8640 off = (stub_entry->target_value
8641 + stub_entry->target_section->output_offset
8642 + stub_entry->target_section->output_section->vma);
eea6121a 8643 off -= (stub_entry->stub_sec->size
721956f4
AM		 8644 + stub_entry->stub_sec->output_offset
8645 + stub_entry->stub_sec->output_section->vma);
8646
ad8e1ba5
AM		 8647 /* Reset the stub type from the plt variant in case we now
8648 can reach with a shorter stub. */
8649 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8650 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8651
8652 size = 4;
8653 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8654 {
ac2df442
AM		 8655 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8656 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8657 size = 12;
8658 if (PPC_HA (r2off) != 0)
8659 size = 16;
8660 off -= size - 4;
ad8e1ba5
AM		 8661 }
8662
8663 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8664 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8665 {
8666 struct ppc_branch_hash_entry *br_entry;
ac2df442 8667 unsigned int indx;
721956f4
AM		 8668
8669 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8670 stub_entry->root.string + 9,
b34976b6 8671 TRUE, FALSE);
721956f4
AM		 8672 if (br_entry == NULL)
8673 {
8674 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8675 stub_entry->root.string);
b34976b6
AM		 8676 htab->stub_error = TRUE;
8677 return FALSE;
721956f4
AM		 8678 }
8679
8680 if (br_entry->iter != htab->stub_iteration)
8681 {
8682 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8683 br_entry->offset = htab->brlt->size;
8684 htab->brlt->size += 8;
63bc6f6c 8685
ee75fd95 8686 if (htab->relbrlt != NULL)
eea6121a 8687 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 8688 else if (info->emitrelocations)
8689 {
8690 htab->brlt->reloc_count += 1;
8691 htab->brlt->flags |= SEC_RELOC;
8692 }
721956f4 8693 }
ad8e1ba5
AM		 8694
8695 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 8696 off = (br_entry->offset
8697 + htab->brlt->output_offset
8698 + htab->brlt->output_section->vma
8699 - elf_gp (htab->brlt->output_section->owner)
8700 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8701
8702 indx = off;
8703 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8704 {
8705 size = 12;
8706 if (PPC_HA (indx) != 0)
8707 size = 16;
8708 }
8709 else
8710 {
8711 size = 20;
8712 if (PPC_HA (indx) != 0)
8713 size += 4;
8714
8715 if (PPC_HA (r2off) != 0)
8716 size += 4;
8717 }
721956f4 8718 }
84f5d08e
AM		 8719 else if (info->emitrelocations)
8720 {
8721 stub_entry->stub_sec->reloc_count += 1;
8722 stub_entry->stub_sec->flags |= SEC_RELOC;
8723 }
721956f4
AM		 8724 }
8725
eea6121a 8726 stub_entry->stub_sec->size += size;
b34976b6 8727 return TRUE;
721956f4
AM		 8728}
8729
8730/* Set up various things so that we can make a list of input sections
8731 for each output section included in the link. Returns -1 on error,
cedb70c5 8732 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8733
8734int
4c52953f
AM		 8735ppc64_elf_setup_section_lists (bfd *output_bfd,
8736 struct bfd_link_info *info,
8737 int no_multi_toc)
721956f4
AM		 8738{
8739 bfd *input_bfd;
734b6cf9 8740 int top_id, top_index, id;
721956f4 8741 asection *section;
734b6cf9 8742 asection **input_list;
721956f4
AM		 8743 bfd_size_type amt;
8744 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8745
4c52953f
AM		 8746 htab->no_multi_toc = no_multi_toc;
8747
4ce794b7 8748 if (htab->brlt == NULL)
721956f4
AM		 8749 return 0;
8750
1e2f5b6e 8751 /* Find the top input section id. */
3d6f9012 8752 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8753 input_bfd != NULL;
8754 input_bfd = input_bfd->link_next)
8755 {
721956f4
AM		 8756 for (section = input_bfd->sections;
8757 section != NULL;
8758 section = section->next)
8759 {
8760 if (top_id < section->id)
8761 top_id = section->id;
8762 }
8763 }
721956f4 8764
8f3bab57 8765 htab->top_id = top_id;
721956f4 8766 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8767 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8768 if (htab->stub_group == NULL)
8769 return -1;
8770
3d6f9012
AM		 8771 /* Set toc_off for com, und, abs and ind sections. */
8772 for (id = 0; id < 3; id++)
8773 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8774
3d6f9012 8775 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8776
8777 /* We can't use output_bfd->section_count here to find the top output
8778 section index as some sections may have been removed, and
8423293d 8779 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8780 for (section = output_bfd->sections, top_index = 0;
8781 section != NULL;
8782 section = section->next)
8783 {
8784 if (top_index < section->index)
8785 top_index = section->index;
8786 }
8787
8788 htab->top_index = top_index;
8789 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8790 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8791 htab->input_list = input_list;
8792 if (input_list == NULL)
8793 return -1;
8794
721956f4
AM		 8795 return 1;
8796}
8797
e717da7e
AM		 8798/* The linker repeatedly calls this function for each TOC input section
8799 and linker generated GOT section. Group input bfds such that the toc
8800 within a group is less than 64k in size. Will break with cute linker
8801 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8802
8803void
4ce794b7 8804ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8805{
8806 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8807
4c52953f
AM		 8808 if (!htab->no_multi_toc)
8809 {
8810 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8811 bfd_vma off = addr - htab->toc_curr;
8812
8813 if (off + isec->size > 0x10000)
8814 htab->toc_curr = addr;
99877b66 8815
4c52953f
AM		 8816 elf_gp (isec->owner) = (htab->toc_curr
8817 - elf_gp (isec->output_section->owner)
8818 + TOC_BASE_OFF);
8819 }
ad8e1ba5
AM		 8820}
8821
8822/* Called after the last call to the above function. */
8823
8824void
4c52953f 8825ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8826{
8827 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8828
4c52953f
AM		 8829 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8830
ad8e1ba5
AM		 8831 /* toc_curr tracks the TOC offset used for code sections below in
8832 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8833 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8834}
8835
9b5ecbd0
AM		 8836/* No toc references were found in ISEC. If the code in ISEC makes no
8837 calls, then there's no need to use toc adjusting stubs when branching
8838 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8839 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8840 needed, and 2 if a cyclical call-graph was found but no other reason
8841 for a stub was detected. If called from the top level, a return of
8842 2 means the same as a return of 0. */
9b5ecbd0
AM		 8843
8844static int
4ce794b7 8845toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8846{
4c52953f
AM		 8847 Elf_Internal_Rela *relstart, *rel;
8848 Elf_Internal_Sym *local_syms;
9b5ecbd0 8849 int ret;
4c52953f 8850 struct ppc_link_hash_table *htab;
9b5ecbd0 8851
772119ce
AM		 8852 /* We know none of our code bearing sections will need toc stubs. */
8853 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8854 return 0;
8855
eea6121a 8856 if (isec->size == 0)
082c50f8
AM		 8857 return 0;
8858
4c52953f
AM		 8859 if (isec->output_section == NULL)
8860 return 0;
8861
9b5ecbd0
AM		 8862 /* Hack for linux kernel. .fixup contains branches, but only back to
8863 the function that hit an exception. */
4c52953f
AM		 8864 if (strcmp (isec->name, ".fixup") == 0)
8865 return 0;
9b5ecbd0 8866
4c52953f
AM		 8867 if (isec->reloc_count == 0)
8868 return 0;
8869
8870 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8871 info->keep_memory);
8872 if (relstart == NULL)
8873 return -1;
8874
8875 /* Look for branches to outside of this section. */
8876 local_syms = NULL;
8877 ret = 0;
8878 htab = ppc_hash_table (info);
8879 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8880 {
4c52953f
AM		 8881 enum elf_ppc64_reloc_type r_type;
8882 unsigned long r_symndx;
8883 struct elf_link_hash_entry *h;
8884 Elf_Internal_Sym *sym;
8885 asection *sym_sec;
8886 long *opd_adjust;
8887 bfd_vma sym_value;
8888 bfd_vma dest;
8889
8890 r_type = ELF64_R_TYPE (rel->r_info);
8891 if (r_type != R_PPC64_REL24
8892 && r_type != R_PPC64_REL14
8893 && r_type != R_PPC64_REL14_BRTAKEN
8894 && r_type != R_PPC64_REL14_BRNTAKEN)
8895 continue;
8896
8897 r_symndx = ELF64_R_SYM (rel->r_info);
8898 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8899 isec->owner))
9b5ecbd0 8900 {
4c52953f
AM		 8901 ret = -1;
8902 break;
9b5ecbd0 8903 }
9b5ecbd0 8904
2917689a
AM		 8905 /* Calls to dynamic lib functions go through a plt call stub
8906 that uses r2. Branches to undefined symbols might be a call
8907 using old-style dot symbols that can be satisfied by a plt
8908 call into a new-style dynamic library. */
4c52953f 8909 if (sym_sec == NULL)
2917689a
AM		 8910 {
8911 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8912 if (eh != NULL
8913 && eh->oh != NULL
8914 && eh->oh->elf.plt.plist != NULL)
8915 {
8916 ret = 1;
8917 break;
8918 }
4c52953f 8919
2917689a
AM		 8920 /* Ignore other undefined symbols. */
8921 continue;
8922 }
8923
8924 /* Assume branches to other sections not included in the link need
8925 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8926 if (sym_sec->output_section == NULL)
8927 {
8928 ret = 1;
8929 break;
8930 }
8931
8932 if (h == NULL)
8933 sym_value = sym->st_value;
8934 else
8935 {
8936 if (h->root.type != bfd_link_hash_defined
8937 && h->root.type != bfd_link_hash_defweak)
8938 abort ();
8939 sym_value = h->root.u.def.value;
8940 }
8941 sym_value += rel->r_addend;
8942
8943 /* If this branch reloc uses an opd sym, find the code section. */
8944 opd_adjust = get_opd_info (sym_sec);
8945 if (opd_adjust != NULL)
8946 {
4c52953f
AM		 8947 if (h == NULL)
8948 {
8949 long adjust;
8950
8951 adjust = opd_adjust[sym->st_value / 8];
8952 if (adjust == -1)
8953 /* Assume deleted functions won't ever be called. */
8954 continue;
8955 sym_value += adjust;
8956 }
8957
8958 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8959 if (dest == (bfd_vma) -1)
8960 continue;
8961 }
8962 else
8963 dest = (sym_value
8964 + sym_sec->output_offset
8965 + sym_sec->output_section->vma);
8966
8967 /* Ignore branch to self. */
8968 if (sym_sec == isec)
8969 continue;
8970
8971 /* If the called function uses the toc, we need a stub. */
8972 if (sym_sec->has_toc_reloc
8973 || sym_sec->makes_toc_func_call)
8974 {
8975 ret = 1;
8976 break;
8977 }
8978
8979 /* Assume any branch that needs a long branch stub might in fact
8980 need a plt_branch stub. A plt_branch stub uses r2. */
8981 else if (dest - (isec->output_offset
8982 + isec->output_section->vma
8983 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8984 {
8985 ret = 1;
8986 break;
8987 }
4c52953f
AM		 8988
8989 /* If calling back to a section in the process of being tested, we
8990 can't say for sure that no toc adjusting stubs are needed, so
8991 don't return zero. */
8992 else if (sym_sec->call_check_in_progress)
8993 ret = 2;
8994
8995 /* Branches to another section that itself doesn't have any TOC
8996 references are OK. Recursively call ourselves to check. */
8997 else if (sym_sec->id <= htab->top_id
8998 && htab->stub_group[sym_sec->id].toc_off == 0)
8999 {
9000 int recur;
9001
9002 /* Mark current section as indeterminate, so that other
9003 sections that call back to current won't be marked as
9004 known. */
9005 isec->call_check_in_progress = 1;
9006 recur = toc_adjusting_stub_needed (info, sym_sec);
9007 isec->call_check_in_progress = 0;
9008
9009 if (recur < 0)
9010 {
9011 /* An error. Exit. */
9012 ret = -1;
9013 break;
9014 }
9015 else if (recur <= 1)
9016 {
9017 /* Known result. Mark as checked and set section flag. */
9018 htab->stub_group[sym_sec->id].toc_off = 1;
9019 if (recur != 0)
9020 {
9021 sym_sec->makes_toc_func_call = 1;
9022 ret = 1;
9023 break;
9024 }
9025 }
9026 else
9027 {
9028 /* Unknown result. Continue checking. */
9029 ret = 2;
9030 }
9031 }
9b5ecbd0
AM		 9032 }
9033
4c52953f
AM		 9034 if (local_syms != NULL
9035 && (elf_tdata (isec->owner)->symtab_hdr.contents
9036 != (unsigned char *) local_syms))
9037 free (local_syms);
9038 if (elf_section_data (isec)->relocs != relstart)
9039 free (relstart);
9040
9b5ecbd0
AM		 9041 return ret;
9042}
9043
721956f4
AM		 9044/* The linker repeatedly calls this function for each input section,
9045 in the order that input sections are linked into output sections.
9046 Build lists of input sections to determine groupings between which
9047 we may insert linker stubs. */
9048
9b5ecbd0 9049bfd_boolean
4ce794b7 9050ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 9051{
9052 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9053
734b6cf9
AM		 9054 if ((isec->output_section->flags & SEC_CODE) != 0
9055 && isec->output_section->index <= htab->top_index)
721956f4 9056 {
734b6cf9 9057 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9058 /* Steal the link_sec pointer for our list. */
721956f4 9059#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 9060 /* This happens to make the list in reverse order,
9061 which is what we want. */
734b6cf9
AM		 9062 PREV_SEC (isec) = *list;
9063 *list = isec;
721956f4 9064 }
ad8e1ba5 9065
4c52953f 9066 if (htab->multi_toc_needed)
9b5ecbd0 9067 {
4c52953f
AM		 9068 /* If a code section has a function that uses the TOC then we need
9069 to use the right TOC (obviously). Also, make sure that .opd gets
9070 the correct TOC value for R_PPC64_TOC relocs that don't have or
9071 can't find their function symbol (shouldn't ever happen now). */
9072 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
9073 {
9074 if (elf_gp (isec->owner) != 0)
9075 htab->toc_curr = elf_gp (isec->owner);
9076 }
9077 else if (htab->stub_group[isec->id].toc_off == 0)
9078 {
9079 int ret = toc_adjusting_stub_needed (info, isec);
9080 if (ret < 0)
9081 return FALSE;
9082 else
9083 isec->makes_toc_func_call = ret & 1;
9084 }
9b5ecbd0 9085 }
ad8e1ba5
AM		 9086
9087 /* Functions that don't use the TOC can belong in any TOC group.
9088 Use the last TOC base. This happens to make _init and _fini
9089 pasting work. */
9090 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9091 return TRUE;
721956f4
AM		 9092}
9093
9094/* See whether we can group stub sections together. Grouping stub
9095 sections may result in fewer stubs. More importantly, we need to
9096 put all .init* and .fini* stubs at the beginning of the .init or
9097 .fini output sections respectively, because glibc splits the
9098 _init and _fini functions into multiple parts. Putting a stub in
9099 the middle of a function is not a good idea. */
9100
9101static void
4ce794b7
AM		 9102group_sections (struct ppc_link_hash_table *htab,
9103 bfd_size_type stub_group_size,
9104 bfd_boolean stubs_always_before_branch)
721956f4 9105{
7c8fe5c4
AM		 9106 asection **list;
9107 bfd_size_type stub14_group_size;
9108 bfd_boolean suppress_size_errors;
9109
9110 suppress_size_errors = FALSE;
9111 stub14_group_size = stub_group_size;
9112 if (stub_group_size == 1)
9113 {
9114 /* Default values. */
9115 if (stubs_always_before_branch)
9116 {
9117 stub_group_size = 0x1e00000;
9118 stub14_group_size = 0x7800;
9119 }
9120 else
9121 {
9122 stub_group_size = 0x1c00000;
9123 stub14_group_size = 0x7000;
9124 }
9125 suppress_size_errors = TRUE;
9126 }
9127
9128 list = htab->input_list + htab->top_index;
734b6cf9 9129 do
721956f4 9130 {
734b6cf9
AM		 9131 asection *tail = *list;
9132 while (tail != NULL)
721956f4 9133 {
734b6cf9
AM		 9134 asection *curr;
9135 asection *prev;
9136 bfd_size_type total;
9137 bfd_boolean big_sec;
9138 bfd_vma curr_toc;
9139
9140 curr = tail;
eea6121a 9141 total = tail->size;
7c8fe5c4
AM		 9142 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9143 ? stub14_group_size : stub_group_size);
9144 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 9145 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9146 tail->owner, tail);
734b6cf9
AM		 9147 curr_toc = htab->stub_group[tail->id].toc_off;
9148
9149 while ((prev = PREV_SEC (curr)) != NULL
9150 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM		 9151 < (ppc64_elf_section_data (prev)->has_14bit_branch
9152 ? stub14_group_size : stub_group_size))
ad8e1ba5 9153 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 9154 curr = prev;
9155
9156 /* OK, the size from the start of CURR to the end is less
9157 than stub_group_size and thus can be handled by one stub
9158 section. (or the tail section is itself larger than
9159 stub_group_size, in which case we may be toast.) We
9160 should really be keeping track of the total size of stubs
9161 added here, as stubs contribute to the final output
9162 section size. That's a little tricky, and this way will
9163 only break if stubs added make the total size more than
9164 2^25, ie. for the default stub_group_size, if stubs total
9165 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9166 do
721956f4
AM		 9167 {
9168 prev = PREV_SEC (tail);
734b6cf9 9169 /* Set up this stub group. */
721956f4
AM		 9170 htab->stub_group[tail->id].link_sec = curr;
9171 }
734b6cf9
AM		 9172 while (tail != curr && (tail = prev) != NULL);
9173
9174 /* But wait, there's more! Input sections up to stub_group_size
9175 bytes before the stub section can be handled by it too.
9176 Don't do this if we have a really large section after the
9177 stubs, as adding more stubs increases the chance that
9178 branches may not reach into the stub section. */
9179 if (!stubs_always_before_branch && !big_sec)
9180 {
9181 total = 0;
9182 while (prev != NULL
9183 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM		 9184 < (ppc64_elf_section_data (prev)->has_14bit_branch
9185 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 9186 && htab->stub_group[prev->id].toc_off == curr_toc)
9187 {
9188 tail = prev;
9189 prev = PREV_SEC (tail);
9190 htab->stub_group[tail->id].link_sec = curr;
9191 }
9192 }
9193 tail = prev;
721956f4
AM		 9194 }
9195 }
734b6cf9
AM		 9196 while (list-- != htab->input_list);
9197 free (htab->input_list);
721956f4
AM		 9198#undef PREV_SEC
9199}
9200
721956f4
AM		 9201/* Determine and set the size of the stub section for a final link.
9202
9203 The basic idea here is to examine all the relocations looking for
9204 PC-relative calls to a target that is unreachable with a "bl"
9205 instruction. */
9206
b34976b6 9207bfd_boolean
4ce794b7 9208ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 9209 struct bfd_link_info *info,
9210 bfd_signed_vma group_size,
9211 asection *(*add_stub_section) (const char *, asection *),
9212 void (*layout_sections_again) (void))
721956f4
AM		 9213{
9214 bfd_size_type stub_group_size;
b34976b6 9215 bfd_boolean stubs_always_before_branch;
721956f4
AM		 9216 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9217
9218 /* Stash our params away. */
721956f4
AM		 9219 htab->add_stub_section = add_stub_section;
9220 htab->layout_sections_again = layout_sections_again;
9221 stubs_always_before_branch = group_size < 0;
9222 if (group_size < 0)
9223 stub_group_size = -group_size;
9224 else
9225 stub_group_size = group_size;
721956f4
AM		 9226
9227 group_sections (htab, stub_group_size, stubs_always_before_branch);
9228
721956f4
AM		 9229 while (1)
9230 {
9231 bfd *input_bfd;
9232 unsigned int bfd_indx;
9233 asection *stub_sec;
721956f4
AM		 9234
9235 htab->stub_iteration += 1;
721956f4
AM		 9236
9237 for (input_bfd = info->input_bfds, bfd_indx = 0;
9238 input_bfd != NULL;
9239 input_bfd = input_bfd->link_next, bfd_indx++)
9240 {
9241 Elf_Internal_Shdr *symtab_hdr;
9242 asection *section;
6cdc0ccc 9243 Elf_Internal_Sym *local_syms = NULL;
721956f4 9244
67f93c31
AM		 9245 if (!is_ppc64_elf_target (input_bfd->xvec))
9246 continue;
9247
721956f4
AM		 9248 /* We'll need the symbol table in a second. */
9249 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9250 if (symtab_hdr->sh_info == 0)
9251 continue;
9252
721956f4
AM		 9253 /* Walk over each section attached to the input bfd. */
9254 for (section = input_bfd->sections;
9255 section != NULL;
9256 section = section->next)
9257 {
721956f4 9258 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 9259
9260 /* If there aren't any relocs, then there's nothing more
9261 to do. */
9262 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 9263 || (section->flags & SEC_ALLOC) == 0
9264 || (section->flags & SEC_LOAD) == 0
9265 || (section->flags & SEC_CODE) == 0
721956f4
AM		 9266 || section->reloc_count == 0)
9267 continue;
9268
9269 /* If this section is a link-once section that will be
9270 discarded, then don't create any stubs. */
9271 if (section->output_section == NULL
9272 || section->output_section->owner != output_bfd)
9273 continue;
9274
1e2f5b6e
AM		 9275 /* Get the relocs. */
9276 internal_relocs
4ce794b7 9277 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9278 info->keep_memory);
721956f4 9279 if (internal_relocs == NULL)
1e2f5b6e 9280 goto error_ret_free_local;
721956f4
AM		 9281
9282 /* Now examine each relocation. */
9283 irela = internal_relocs;
9284 irelaend = irela + section->reloc_count;
9285 for (; irela < irelaend; irela++)
9286 {
4ce794b7
AM		 9287 enum elf_ppc64_reloc_type r_type;
9288 unsigned int r_indx;
721956f4
AM		 9289 enum ppc_stub_type stub_type;
9290 struct ppc_stub_hash_entry *stub_entry;
8387904d 9291 asection *sym_sec, *code_sec;
721956f4
AM		 9292 bfd_vma sym_value;
9293 bfd_vma destination;
8843416a 9294 bfd_boolean ok_dest;
721956f4 9295 struct ppc_link_hash_entry *hash;
8387904d 9296 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 9297 struct elf_link_hash_entry *h;
9298 Elf_Internal_Sym *sym;
721956f4
AM		 9299 char *stub_name;
9300 const asection *id_sec;
8387904d 9301 long *opd_adjust;
721956f4
AM		 9302
9303 r_type = ELF64_R_TYPE (irela->r_info);
9304 r_indx = ELF64_R_SYM (irela->r_info);
9305
4ce794b7 9306 if (r_type >= R_PPC64_max)
721956f4
AM		 9307 {
9308 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9309 goto error_ret_free_internal;
721956f4
AM		 9310 }
9311
9312 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 9313 if (r_type != R_PPC64_REL24
9314 && r_type != R_PPC64_REL14
9315 && r_type != R_PPC64_REL14_BRTAKEN
9316 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 9317 continue;
9318
9319 /* Now determine the call target, its name, value,
9320 section. */
411e1bfb
AM		 9321 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9322 r_indx, input_bfd))
9323 goto error_ret_free_internal;
9324 hash = (struct ppc_link_hash_entry *) h;
9325
8843416a 9326 ok_dest = FALSE;
8387904d 9327 fdh = NULL;
7fe2b9a6 9328 sym_value = 0;
411e1bfb 9329 if (hash == NULL)
721956f4 9330 {
411e1bfb 9331 sym_value = sym->st_value;
8843416a 9332 ok_dest = TRUE;
721956f4 9333 }
7fe2b9a6
AM		 9334 else if (hash->elf.root.type == bfd_link_hash_defined
9335 || hash->elf.root.type == bfd_link_hash_defweak)
9336 {
9337 sym_value = hash->elf.root.u.def.value;
9338 if (sym_sec->output_section != NULL)
9339 ok_dest = TRUE;
9340 }
9341 else if (hash->elf.root.type == bfd_link_hash_undefweak
9342 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9343 {
99877b66 9344 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 9345 use the func descriptor sym instead if it is
9346 defined. */
ceb1f1ef 9347 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 9348 && (fdh = get_fdh (hash, htab)) != NULL)
9349 {
8387904d
AM		 9350 if (fdh->elf.root.type == bfd_link_hash_defined
9351 || fdh->elf.root.type == bfd_link_hash_defweak)
9352 {
9353 sym_sec = fdh->elf.root.u.def.section;
9354 sym_value = fdh->elf.root.u.def.value;
9355 if (sym_sec->output_section != NULL)
9356 ok_dest = TRUE;
9357 }
99877b66
AM		 9358 else
9359 fdh = NULL;
8387904d 9360 }
7fe2b9a6
AM		 9361 }
9362 else
9363 {
9364 bfd_set_error (bfd_error_bad_value);
9365 goto error_ret_free_internal;
721956f4
AM		 9366 }
9367
8843416a
AM		 9368 destination = 0;
9369 if (ok_dest)
9370 {
9371 sym_value += irela->r_addend;
9372 destination = (sym_value
9373 + sym_sec->output_offset
9374 + sym_sec->output_section->vma);
9375 }
9376
8387904d
AM		 9377 code_sec = sym_sec;
9378 opd_adjust = get_opd_info (sym_sec);
9379 if (opd_adjust != NULL)
9380 {
9381 bfd_vma dest;
9382
9383 if (hash == NULL)
9384 {
3f764659 9385 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 9386 if (adjust == -1)
9387 continue;
9388 sym_value += adjust;
9389 }
9390 dest = opd_entry_value (sym_sec, sym_value,
9391 &code_sec, &sym_value);
9392 if (dest != (bfd_vma) -1)
9393 {
9394 destination = dest;
9395 if (fdh != NULL)
9396 {
9397 /* Fixup old ABI sym to point at code
9398 entry. */
99877b66 9399 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9400 hash->elf.root.u.def.section = code_sec;
9401 hash->elf.root.u.def.value = sym_value;
9402 }
9403 }
9404 }
9405
721956f4
AM		 9406 /* Determine what (if any) linker stub is needed. */
9407 stub_type = ppc_type_of_stub (section, irela, &hash,
9408 destination);
ad8e1ba5
AM		 9409
9410 if (stub_type != ppc_stub_plt_call)
9411 {
9412 /* Check whether we need a TOC adjusting stub.
9413 Since the linker pastes together pieces from
9414 different object files when creating the
9415 _init and _fini functions, it may be that a
9416 call to what looks like a local sym is in
9417 fact a call needing a TOC adjustment. */
8387904d
AM		 9418 if (code_sec != NULL
9419 && code_sec->output_section != NULL
9420 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9421 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9422 && (code_sec->has_toc_reloc
9423 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9424 stub_type = ppc_stub_long_branch_r2off;
9425 }
9426
721956f4
AM		 9427 if (stub_type == ppc_stub_none)
9428 continue;
9429
411e1bfb
AM		 9430 /* __tls_get_addr calls might be eliminated. */
9431 if (stub_type != ppc_stub_plt_call
9432 && hash != NULL
8387904d
AM		 9433 && (hash == htab->tls_get_addr
9434 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9435 && section->has_tls_reloc
9436 && irela != internal_relocs)
9437 {
9438 /* Get tls info. */
e7b938ca 9439 char *tls_mask;
411e1bfb 9440
0d4792f7 9441 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9442 irela - 1, input_bfd))
9443 goto error_ret_free_internal;
e7b938ca 9444 if (*tls_mask != 0)
411e1bfb
AM		 9445 continue;
9446 }
9447
721956f4
AM		 9448 /* Support for grouping stub sections. */
9449 id_sec = htab->stub_group[section->id].link_sec;
9450
9451 /* Get the name of this stub. */
9452 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9453 if (!stub_name)
9454 goto error_ret_free_internal;
9455
9456 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9457 stub_name, FALSE, FALSE);
721956f4
AM		 9458 if (stub_entry != NULL)
9459 {
9460 /* The proper stub has already been created. */
9461 free (stub_name);
9462 continue;
9463 }
9464
9465 stub_entry = ppc_add_stub (stub_name, section, htab);
9466 if (stub_entry == NULL)
9467 {
9468 free (stub_name);
6cdc0ccc
AM		 9469 error_ret_free_internal:
9470 if (elf_section_data (section)->relocs == NULL)
9471 free (internal_relocs);
9472 error_ret_free_local:
9473 if (local_syms != NULL
9474 && (symtab_hdr->contents
9475 != (unsigned char *) local_syms))
9476 free (local_syms);
b34976b6 9477 return FALSE;
721956f4
AM		 9478 }
9479
ad8e1ba5 9480 stub_entry->stub_type = stub_type;
721956f4 9481 stub_entry->target_value = sym_value;
8387904d 9482 stub_entry->target_section = code_sec;
721956f4 9483 stub_entry->h = hash;
411e1bfb 9484 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9485
9486 if (stub_entry->h != NULL)
9487 htab->stub_globals += 1;
721956f4
AM		 9488 }
9489
9490 /* We're done with the internal relocs, free them. */
6cdc0ccc 9491 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9492 free (internal_relocs);
721956f4 9493 }
6cdc0ccc
AM		 9494
9495 if (local_syms != NULL
9496 && symtab_hdr->contents != (unsigned char *) local_syms)
9497 {
9498 if (!info->keep_memory)
9499 free (local_syms);
9500 else
9501 symtab_hdr->contents = (unsigned char *) local_syms;
9502 }
721956f4
AM		 9503 }
9504
5c3dead3 9505 /* We may have added some stubs. Find out the new size of the
721956f4
AM		 9506 stub sections. */
9507 for (stub_sec = htab->stub_bfd->sections;
9508 stub_sec != NULL;
9509 stub_sec = stub_sec->next)
e717da7e 9510 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9511 {
5c3dead3 9512 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 9513 stub_sec->size = 0;
9514 stub_sec->reloc_count = 0;
84f5d08e 9515 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9516 }
eea6121a
AM		 9517
9518 htab->brlt->size = 0;
84f5d08e
AM		 9519 htab->brlt->reloc_count = 0;
9520 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9521 if (htab->relbrlt != NULL)
eea6121a 9522 htab->relbrlt->size = 0;
721956f4 9523
63bc6f6c 9524 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9525
5c3dead3
AM		 9526 for (stub_sec = htab->stub_bfd->sections;
9527 stub_sec != NULL;
9528 stub_sec = stub_sec->next)
9529 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9530 && stub_sec->rawsize != stub_sec->size)
9531 break;
9532
9533 /* Exit from this loop when no stubs have been added, and no stubs
9534 have changed size. */
9535 if (stub_sec == NULL)
9536 break;
9537
721956f4
AM		 9538 /* Ask the linker to do its stuff. */
9539 (*htab->layout_sections_again) ();
9540 }
9541
c456f082 9542 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9543 section is empty, but it's too late. If we strip sections here,
9544 the dynamic symbol table is corrupted since the section symbol
9545 for the stripped section isn't written. */
721956f4 9546
b34976b6 9547 return TRUE;
721956f4
AM		 9548}
9549
9550/* Called after we have determined section placement. If sections
805fc799 9551 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9552
805fc799 9553bfd_vma
4ce794b7 9554ppc64_elf_toc (bfd *obfd)
721956f4 9555{
805fc799
AM		 9556 asection *s;
9557 bfd_vma TOCstart;
721956f4 9558
805fc799
AM		 9559 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9560 order. The TOC starts where the first of these sections starts. */
9561 s = bfd_get_section_by_name (obfd, ".got");
9562 if (s == NULL)
9563 s = bfd_get_section_by_name (obfd, ".toc");
9564 if (s == NULL)
9565 s = bfd_get_section_by_name (obfd, ".tocbss");
9566 if (s == NULL)
9567 s = bfd_get_section_by_name (obfd, ".plt");
9568 if (s == NULL)
9569 {
9570 /* This may happen for
9571 o references to TOC base (SYM@toc / TOC[tc0]) without a
9572 .toc directive
9573 o bad linker script
9574 o --gc-sections and empty TOC sections
9575
9576 FIXME: Warn user? */
9577
9578 /* Look for a likely section. We probably won't even be
9579 using TOCstart. */
9580 for (s = obfd->sections; s != NULL; s = s->next)
9581 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9582 == (SEC_ALLOC | SEC_SMALL_DATA))
9583 break;
721956f4 9584 if (s == NULL)
805fc799
AM		 9585 for (s = obfd->sections; s != NULL; s = s->next)
9586 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9587 == (SEC_ALLOC | SEC_SMALL_DATA))
9588 break;
721956f4 9589 if (s == NULL)
805fc799
AM		 9590 for (s = obfd->sections; s != NULL; s = s->next)
9591 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9592 break;
721956f4 9593 if (s == NULL)
805fc799
AM		 9594 for (s = obfd->sections; s != NULL; s = s->next)
9595 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9596 break;
9597 }
721956f4 9598
805fc799
AM		 9599 TOCstart = 0;
9600 if (s != NULL)
9601 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9602
805fc799 9603 return TOCstart;
721956f4
AM		 9604}
9605
9606/* Build all the stubs associated with the current output file.
9607 The stubs are kept in a hash table attached to the main linker
9608 hash table. This function is called via gldelf64ppc_finish. */
9609
b34976b6 9610bfd_boolean
4ce794b7
AM		 9611ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9612 struct bfd_link_info *info,
9613 char **stats)
5d1634d7
AM		 9614{
9615 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9616 asection *stub_sec;
5d1634d7 9617 bfd_byte *p;
e717da7e 9618 int stub_sec_count = 0;
5d1634d7 9619
ad8e1ba5 9620 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9621
9622 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9623 for (stub_sec = htab->stub_bfd->sections;
9624 stub_sec != NULL;
9625 stub_sec = stub_sec->next)
eea6121a
AM		 9626 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9627 && stub_sec->size != 0)
e717da7e 9628 {
eea6121a
AM		 9629 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9630 if (stub_sec->contents == NULL)
9631 return FALSE;
9632 /* We want to check that built size is the same as calculated
9633 size. rawsize is a convenient location to use. */
9634 stub_sec->rawsize = stub_sec->size;
9635 stub_sec->size = 0;
e717da7e 9636 }
5d1634d7 9637
23eb7e01 9638 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9639 {
9f951329 9640 unsigned int indx;
ad8e1ba5 9641 bfd_vma plt0;
9f951329 9642
721956f4 9643 /* Build the .glink plt call stub. */
97b639ba
AM		 9644 if (htab->emit_stub_syms)
9645 {
9646 struct elf_link_hash_entry *h;
9647 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9648 if (h == NULL)
9649 return FALSE;
9650 if (h->root.type == bfd_link_hash_new)
9651 {
9652 h->root.type = bfd_link_hash_defined;
9653 h->root.u.def.section = htab->glink;
ee4bf8d2 9654 h->root.u.def.value = 8;
f5385ebf
AM		 9655 h->ref_regular = 1;
9656 h->def_regular = 1;
9657 h->ref_regular_nonweak = 1;
9658 h->forced_local = 1;
9659 h->non_elf = 0;
97b639ba
AM		 9660 }
9661 }
4ce794b7 9662 p = htab->glink->contents;
ee4bf8d2
AM		 9663 plt0 = (htab->plt->output_section->vma
9664 + htab->plt->output_offset
9665 - (htab->glink->output_section->vma
9666 + htab->glink->output_offset
9667 + 16));
9668 bfd_put_64 (htab->glink->owner, plt0, p);
9669 p += 8;
9670 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9671 p += 4;
ee4bf8d2 9672 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9673 p += 4;
ee4bf8d2 9674 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9675 p += 4;
ee4bf8d2 9676 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9677 p += 4;
ee4bf8d2 9678 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9679 p += 4;
ee4bf8d2 9680 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9681 p += 4;
ee4bf8d2 9682 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9683 p += 4;
4ce794b7 9684 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9685 p += 4;
4ce794b7 9686 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9687 p += 4;
4ce794b7 9688 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9689 p += 4;
4ce794b7 9690 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9691 p += 4;
ee4bf8d2
AM		 9692 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9693 {
9694 bfd_put_32 (htab->glink->owner, NOP, p);
9695 p += 4;
9696 }
ad8e1ba5 9697
9f951329
AM		 9698 /* Build the .glink lazy link call stubs. */
9699 indx = 0;
eea6121a 9700 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9701 {
9702 if (indx < 0x8000)
9703 {
4ce794b7 9704 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9705 p += 4;
9706 }
9707 else
9708 {
4ce794b7 9709 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9710 p += 4;
4ce794b7 9711 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9712 p += 4;
9713 }
4ce794b7 9714 bfd_put_32 (htab->glink->owner,
ee4bf8d2 9715 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 9716 indx++;
9f951329
AM		 9717 p += 4;
9718 }
eea6121a 9719 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9720 }
5d1634d7 9721
eea6121a 9722 if (htab->brlt->size != 0)
721956f4 9723 {
4ce794b7 9724 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9725 htab->brlt->size);
4ce794b7 9726 if (htab->brlt->contents == NULL)
b34976b6 9727 return FALSE;
721956f4 9728 }
ee75fd95 9729 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9730 {
9731 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9732 htab->relbrlt->size);
63bc6f6c
AM		 9733 if (htab->relbrlt->contents == NULL)
9734 return FALSE;
9735 }
5d1634d7 9736
721956f4
AM		 9737 /* Build the stubs as directed by the stub hash table. */
9738 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9739
aa8a7074
AM		 9740 if (htab->relbrlt != NULL)
9741 htab->relbrlt->reloc_count = 0;
9742
721956f4
AM		 9743 for (stub_sec = htab->stub_bfd->sections;
9744 stub_sec != NULL;
9745 stub_sec = stub_sec->next)
e717da7e
AM		 9746 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9747 {
9748 stub_sec_count += 1;
eea6121a 9749 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9750 break;
9751 }
5d1634d7 9752
721956f4 9753 if (stub_sec != NULL
eea6121a 9754 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9755 {
b34976b6 9756 htab->stub_error = TRUE;
721956f4 9757 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9758 }
721956f4 9759
d2a300cf
AM		 9760 if (htab->stub_error)
9761 return FALSE;
9762
9763 if (stats != NULL)
9764 {
9765 *stats = bfd_malloc (500);
9766 if (*stats == NULL)
9767 return FALSE;
9768
ee75fd95 9769 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9770 " branch %lu\n"
9771 " toc adjust %lu\n"
9772 " long branch %lu\n"
9773 " long toc adj %lu\n"
9774 " plt call %lu"),
e717da7e 9775 stub_sec_count,
ee75fd95 9776 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9777 htab->stub_count[ppc_stub_long_branch - 1],
9778 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9779 htab->stub_count[ppc_stub_plt_branch - 1],
9780 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9781 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9782 }
9783 return TRUE;
5bd4f169
AM		 9784}
9785
99877b66
AM		 9786/* This function undoes the changes made by add_symbol_adjust. */
9787
9788static bfd_boolean
9789undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9790{
9791 struct ppc_link_hash_entry *eh;
9792
9793 if (h->root.type == bfd_link_hash_indirect)
9794 return TRUE;
9795
9796 if (h->root.type == bfd_link_hash_warning)
9797 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9798
9799 eh = (struct ppc_link_hash_entry *) h;
9800 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9801 return TRUE;
9802
9803 eh->elf.root.type = bfd_link_hash_undefined;
9804 return TRUE;
9805}
9806
9807void
9808ppc64_elf_restore_symbols (struct bfd_link_info *info)
9809{
9810 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9811 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9812}
9813
60124e18
AM		 9814/* What to do when ld finds relocations against symbols defined in
9815 discarded sections. */
9816
9817static unsigned int
9818ppc64_elf_action_discarded (asection *sec)
9819{
9820 if (strcmp (".opd", sec->name) == 0)
9821 return 0;
9822
9823 if (strcmp (".toc", sec->name) == 0)
9824 return 0;
9825
bce50a28
JJ		 9826 if (strcmp (".toc1", sec->name) == 0)
9827 return 0;
9828
60124e18
AM		 9829 return _bfd_elf_default_action_discarded (sec);
9830}
9831
5bd4f169
AM		 9832/* The RELOCATE_SECTION function is called by the ELF backend linker
9833 to handle the relocations for a section.
9834
9835 The relocs are always passed as Rela structures; if the section
9836 actually uses Rel structures, the r_addend field will always be
9837 zero.
9838
9839 This function is responsible for adjust the section contents as
9840 necessary, and (if using Rela relocs and generating a
1049f94e 9841 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9842 necessary.
9843
9844 This function does not have to worry about setting the reloc
9845 address or the reloc symbol index.
9846
9847 LOCAL_SYMS is a pointer to the swapped in local symbols.
9848
9849 LOCAL_SECTIONS is an array giving the section in the input file
9850 corresponding to the st_shndx field of each local symbol.
9851
9852 The global hash table entry for the global symbols can be found
9853 via elf_sym_hashes (input_bfd).
9854
1049f94e 9855 When generating relocatable output, this function must handle
5bd4f169
AM		 9856 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9857 going to be the section symbol corresponding to the output
9858 section, which means that the addend must be adjusted
9859 accordingly. */
9860
b34976b6 9861static bfd_boolean
4ce794b7
AM		 9862ppc64_elf_relocate_section (bfd *output_bfd,
9863 struct bfd_link_info *info,
9864 bfd *input_bfd,
9865 asection *input_section,
9866 bfd_byte *contents,
9867 Elf_Internal_Rela *relocs,
9868 Elf_Internal_Sym *local_syms,
9869 asection **local_sections)
5bd4f169 9870{
65f38f15 9871 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9872 Elf_Internal_Shdr *symtab_hdr;
9873 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9874 Elf_Internal_Rela *rel;
9875 Elf_Internal_Rela *relend;
411e1bfb
AM		 9876 Elf_Internal_Rela outrel;
9877 bfd_byte *loc;
411e1bfb 9878 struct got_entry **local_got_ents;
5bd4f169 9879 bfd_vma TOCstart;
b34976b6
AM		 9880 bfd_boolean ret = TRUE;
9881 bfd_boolean is_opd;
96e0dda4 9882 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9883 bfd_boolean is_power4 = FALSE;
4fe5ca5b 9884 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 9885
65f38f15 9886 /* Initialize howto table if needed. */
5bd4f169 9887 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9888 ppc_howto_init ();
9889
65f38f15 9890 htab = ppc_hash_table (info);
ee75fd95
AM		 9891
9892 /* Don't relocate stub sections. */
9893 if (input_section->owner == htab->stub_bfd)
9894 return TRUE;
9895
411e1bfb 9896 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9897 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9898 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9899 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 9900 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 9901
5bd4f169
AM		 9902 rel = relocs;
9903 relend = relocs + input_section->reloc_count;
9904 for (; rel < relend; rel++)
9905 {
04c9666a 9906 enum elf_ppc64_reloc_type r_type;
4cc603a5 9907 bfd_vma addend, orig_addend;
5bd4f169
AM		 9908 bfd_reloc_status_type r;
9909 Elf_Internal_Sym *sym;
9910 asection *sec;
039b3fef
AM		 9911 struct elf_link_hash_entry *h_elf;
9912 struct ppc_link_hash_entry *h;
9913 struct ppc_link_hash_entry *fdh;
5bd4f169 9914 const char *sym_name;
0d4792f7 9915 unsigned long r_symndx, toc_symndx;
951fd09b 9916 char tls_mask, tls_gd, tls_type;
0d4792f7 9917 char sym_type;
5bd4f169 9918 bfd_vma relocation;
b34976b6
AM		 9919 bfd_boolean unresolved_reloc;
9920 bfd_boolean warned;
50bc7936 9921 unsigned long insn, mask;
721956f4
AM		 9922 struct ppc_stub_hash_entry *stub_entry;
9923 bfd_vma max_br_offset;
9924 bfd_vma from;
5bd4f169 9925
4ce794b7 9926 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9927 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9928
9929 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9930 symbol of the previous ADDR64 reloc. The symbol gives us the
9931 proper TOC base to use. */
9932 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9933 && rel != relocs
9934 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9935 && is_opd)
9936 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9937
4ce794b7
AM		 9938 sym = NULL;
9939 sec = NULL;
039b3fef 9940 h_elf = NULL;
4ce794b7 9941 sym_name = NULL;
b34976b6
AM		 9942 unresolved_reloc = FALSE;
9943 warned = FALSE;
4cc603a5 9944 orig_addend = rel->r_addend;
65f38f15 9945
0b13192e 9946 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9947 {
9948 /* It's a local symbol. */
4025353c
AM		 9949 long *opd_adjust;
9950
5bd4f169
AM		 9951 sym = local_syms + r_symndx;
9952 sec = local_sections[r_symndx];
26c61ae5 9953 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9954 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9955 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9956 opd_adjust = get_opd_info (sec);
9957 if (opd_adjust != NULL)
1e2f5b6e 9958 {
3f764659 9959 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9960 if (adjust == -1)
9961 relocation = 0;
9962 else
4cc603a5
AM		 9963 {
9964 /* If this is a relocation against the opd section sym
9965 and we have edited .opd, adjust the reloc addend so
9966 that ld -r and ld --emit-relocs output is correct.
9967 If it is a reloc against some other .opd symbol,
9968 then the symbol value will be adjusted later. */
9969 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
9970 rel->r_addend += adjust;
9971 else
9972 relocation += adjust;
9973 }
1e2f5b6e 9974 }
5bd4f169
AM		 9975 }
9976 else
9977 {
b2a8e766
AM		 9978 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9979 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9980 h_elf, sec, relocation,
b2a8e766 9981 unresolved_reloc, warned);
039b3fef
AM		 9982 sym_name = h_elf->root.root.string;
9983 sym_type = h_elf->type;
5bd4f169 9984 }
039b3fef 9985 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9986
ab96bf03
AM		 9987 if (sec != NULL && elf_discarded_section (sec))
9988 {
9989 /* For relocs against symbols from removed linkonce sections,
9990 or sections discarded by a linker script, we just want the
9991 section contents zeroed. Avoid any special processing. */
9992 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
9993 contents + rel->r_offset);
9994 rel->r_info = 0;
9995 rel->r_addend = 0;
9996 continue;
9997 }
9998
9999 if (info->relocatable)
10000 continue;
10001
951fd09b
AM		 10002 /* TLS optimizations. Replace instruction sequences and relocs
10003 based on information we collected in tls_optimize. We edit
10004 RELOCS so that --emit-relocs will output something sensible
10005 for the final instruction stream. */
10006 tls_mask = 0;
10007 tls_gd = 0;
0d4792f7 10008 toc_symndx = 0;
d881513a 10009 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 10010 {
10011 if (h != NULL)
039b3fef 10012 tls_mask = h->tls_mask;
411e1bfb
AM		 10013 else if (local_got_ents != NULL)
10014 {
e7b938ca
AM		 10015 char *lgot_masks;
10016 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10017 tls_mask = lgot_masks[r_symndx];
411e1bfb 10018 }
0d4792f7
AM		 10019 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10020 {
10021 /* Check for toc tls entries. */
10022 char *toc_tls;
10023
10024 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10025 rel, input_bfd))
10026 return FALSE;
10027
10028 if (toc_tls)
10029 tls_mask = *toc_tls;
10030 }
10031 }
10032
10033 /* Check that tls relocs are used with tls syms, and non-tls
10034 relocs are used with non-tls syms. */
10035 if (r_symndx != 0
10036 && r_type != R_PPC64_NONE
10037 && (h == NULL
039b3fef
AM		 10038 || h->elf.root.type == bfd_link_hash_defined
10039 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 10040 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
10041 {
10042 if (r_type == R_PPC64_TLS && tls_mask != 0)
10043 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10044 ;
10045 else
10046 (*_bfd_error_handler)
10047 (sym_type == STT_TLS
d003868e
AM		 10048 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10049 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10050 input_bfd,
10051 input_section,
0d4792f7
AM		 10052 (long) rel->r_offset,
10053 ppc64_elf_howto_table[r_type]->name,
10054 sym_name);
411e1bfb
AM		 10055 }
10056
10057 /* Ensure reloc mapping code below stays sane. */
10058 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10059 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10060 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10061 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10062 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10063 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10064 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10065 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10066 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10067 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10068 abort ();
0d4792f7 10069
411e1bfb
AM		 10070 switch (r_type)
10071 {
10072 default:
411e1bfb
AM		 10073 break;
10074
10075 case R_PPC64_TOC16:
10076 case R_PPC64_TOC16_LO:
10077 case R_PPC64_TOC16_DS:
10078 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 10079 {
10080 /* Check for toc tls entries. */
10081 char *toc_tls;
951fd09b 10082 int retval;
411e1bfb 10083
0d4792f7
AM		 10084 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10085 rel, input_bfd);
951fd09b 10086 if (retval == 0)
411e1bfb
AM		 10087 return FALSE;
10088
10089 if (toc_tls)
10090 {
951fd09b 10091 tls_mask = *toc_tls;
411e1bfb
AM		 10092 if (r_type == R_PPC64_TOC16_DS
10093 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 10094 {
10095 if (tls_mask != 0
10096 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10097 goto toctprel;
10098 }
411e1bfb 10099 else
951fd09b
AM		 10100 {
10101 /* If we found a GD reloc pair, then we might be
10102 doing a GD->IE transition. */
10103 if (retval == 2)
10104 {
10105 tls_gd = TLS_TPRELGD;
10106 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10107 goto tls_get_addr_check;
10108 }
10109 else if (retval == 3)
10110 {
10111 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10112 goto tls_get_addr_check;
10113 }
10114 }
411e1bfb
AM		 10115 }
10116 }
10117 break;
10118
10119 case R_PPC64_GOT_TPREL16_DS:
10120 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 10121 if (tls_mask != 0
10122 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10123 {
81407a69 10124 toctprel:
4fe5ca5b 10125 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 10126 insn &= 31 << 21;
10127 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10128 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10129 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 10130 if (toc_symndx != 0)
10131 {
10132 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10133 /* We changed the symbol. Start over in order to
10134 get h, sym, sec etc. right. */
10135 rel--;
10136 continue;
10137 }
10138 else
10139 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10140 }
10141 break;
10142
10143 case R_PPC64_TLS:
951fd09b
AM		 10144 if (tls_mask != 0
10145 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10146 {
50bc7936 10147 bfd_vma rtra;
411e1bfb 10148 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10149 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 10150 == ((31 << 26) | (13 << 11)))
10151 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10152 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 10153 == ((31 << 26) | (13 << 16)))
10154 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10155 else
10156 abort ();
10157 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10158 /* add -> addi. */
10159 insn = 14 << 26;
10160 else if ((insn & (31 << 1)) == 23 << 1
10161 && ((insn & (31 << 6)) < 14 << 6
10162 || ((insn & (31 << 6)) >= 16 << 6
10163 && (insn & (31 << 6)) < 24 << 6)))
10164 /* load and store indexed -> dform. */
10165 insn = (32 | ((insn >> 6) & 31)) << 26;
10166 else if ((insn & (31 << 1)) == 21 << 1
10167 && (insn & (0x1a << 6)) == 0)
10168 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10169 insn = (((58 | ((insn >> 6) & 4)) << 26)
10170 | ((insn >> 6) & 1));
10171 else if ((insn & (31 << 1)) == 21 << 1
10172 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10173 /* lwax -> lwa. */
10174 insn = (58 << 26) | 2;
10175 else
10176 abort ();
10177 insn |= rtra;
10178 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10179 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 10180 PPC64_TPREL16_LO which is at low-order half-word. */
10181 rel->r_offset += d_offset;
0d4792f7
AM		 10182 r_type = R_PPC64_TPREL16_LO;
10183 if (toc_symndx != 0)
10184 {
10185 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10186 /* We changed the symbol. Start over in order to
10187 get h, sym, sec etc. right. */
10188 rel--;
10189 continue;
10190 }
10191 else
10192 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10193 }
10194 break;
10195
411e1bfb
AM		 10196 case R_PPC64_GOT_TLSGD16_HI:
10197 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 10198 tls_gd = TLS_TPRELGD;
10199 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10200 goto tls_gdld_hi;
10201 break;
10202
411e1bfb
AM		 10203 case R_PPC64_GOT_TLSLD16_HI:
10204 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10205 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10206 {
951fd09b
AM		 10207 tls_gdld_hi:
10208 if ((tls_mask & tls_gd) != 0)
10209 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10210 + R_PPC64_GOT_TPREL16_DS);
10211 else
411e1bfb 10212 {
951fd09b 10213 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10214 rel->r_offset -= d_offset;
951fd09b 10215 r_type = R_PPC64_NONE;
411e1bfb 10216 }
951fd09b 10217 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10218 }
10219 break;
10220
951fd09b
AM		 10221 case R_PPC64_GOT_TLSGD16:
10222 case R_PPC64_GOT_TLSGD16_LO:
10223 tls_gd = TLS_TPRELGD;
10224 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10225 goto tls_get_addr_check;
10226 break;
411e1bfb 10227
951fd09b
AM		 10228 case R_PPC64_GOT_TLSLD16:
10229 case R_PPC64_GOT_TLSLD16_LO:
10230 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10231 {
10232 tls_get_addr_check:
10233 if (rel + 1 < relend)
411e1bfb 10234 {
951fd09b
AM		 10235 enum elf_ppc64_reloc_type r_type2;
10236 unsigned long r_symndx2;
10237 struct elf_link_hash_entry *h2;
10238 bfd_vma insn1, insn2, insn3;
10239 bfd_vma offset;
10240
10241 /* The next instruction should be a call to
10242 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 10243 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 10244 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
10245 if (r_symndx2 < symtab_hdr->sh_info
10246 || (r_type2 != R_PPC64_REL14
10247 && r_type2 != R_PPC64_REL14_BRTAKEN
10248 && r_type2 != R_PPC64_REL14_BRNTAKEN
10249 && r_type2 != R_PPC64_REL24))
10250 break;
10251
10252 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
10253 while (h2->root.type == bfd_link_hash_indirect
10254 || h2->root.type == bfd_link_hash_warning)
10255 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 10256 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
10257 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 10258 break;
10259
10260 /* OK, it checks out. Replace the call. */
10261 offset = rel[1].r_offset;
10262 insn1 = bfd_get_32 (output_bfd,
4fe5ca5b 10263 contents + rel->r_offset - d_offset);
951fd09b
AM		 10264 insn3 = bfd_get_32 (output_bfd,
10265 contents + offset + 4);
10266 if ((tls_mask & tls_gd) != 0)
411e1bfb 10267 {
951fd09b
AM		 10268 /* IE */
10269 insn1 &= (1 << 26) - (1 << 2);
10270 insn1 |= 58 << 26; /* ld */
10271 insn2 = 0x7c636a14; /* add 3,3,13 */
10272 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
10273 if ((tls_mask & TLS_EXPLICIT) == 0)
10274 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10275 + R_PPC64_GOT_TPREL16_DS);
10276 else
10277 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10278 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10279 }
10280 else
951fd09b
AM		 10281 {
10282 /* LE */
10283 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10284 insn2 = 0x38630000; /* addi 3,3,0 */
10285 if (tls_gd == 0)
10286 {
10287 /* Was an LD reloc. */
10288 r_symndx = 0;
e1918d23
AM		 10289 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10290 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 10291 }
0d4792f7
AM		 10292 else if (toc_symndx != 0)
10293 r_symndx = toc_symndx;
951fd09b
AM		 10294 r_type = R_PPC64_TPREL16_HA;
10295 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10296 rel[1].r_info = ELF64_R_INFO (r_symndx,
10297 R_PPC64_TPREL16_LO);
4fe5ca5b 10298 rel[1].r_offset += d_offset;
951fd09b
AM		 10299 }
10300 if (insn3 == NOP
10301 || insn3 == CROR_151515 || insn3 == CROR_313131)
10302 {
10303 insn3 = insn2;
10304 insn2 = NOP;
10305 rel[1].r_offset += 4;
10306 }
4fe5ca5b 10307 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
951fd09b
AM		 10308 bfd_put_32 (output_bfd, insn2, contents + offset);
10309 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 10310 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 10311 {
0d4792f7
AM		 10312 /* We changed the symbol. Start over in order
10313 to get h, sym, sec etc. right. */
951fd09b
AM		 10314 rel--;
10315 continue;
10316 }
411e1bfb 10317 }
411e1bfb 10318 }
411e1bfb
AM		 10319 break;
10320
10321 case R_PPC64_DTPMOD64:
951fd09b
AM		 10322 if (rel + 1 < relend
10323 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10324 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10325 {
951fd09b
AM		 10326 if ((tls_mask & TLS_GD) == 0)
10327 {
10328 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10329 if ((tls_mask & TLS_TPRELGD) != 0)
10330 r_type = R_PPC64_TPREL64;
10331 else
10332 {
4ce794b7 10333 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 10334 r_type = R_PPC64_NONE;
10335 }
10336 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10337 }
10338 }
10339 else
10340 {
10341 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10342 {
4ce794b7 10343 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10344 r_type = R_PPC64_NONE;
951fd09b 10345 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10346 }
411e1bfb
AM		 10347 }
10348 break;
10349
10350 case R_PPC64_TPREL64:
951fd09b 10351 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 10352 {
10353 r_type = R_PPC64_NONE;
10354 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10355 }
10356 break;
10357 }
10358
10359 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10360 insn = 0;
b25116a9
AM		 10361 max_br_offset = 1 << 25;
10362 addend = rel->r_addend;
65f38f15 10363 switch (r_type)
5bd4f169
AM		 10364 {
10365 default:
65f38f15 10366 break;
5bd4f169 10367
65f38f15
AM		 10368 /* Branch taken prediction relocations. */
10369 case R_PPC64_ADDR14_BRTAKEN:
10370 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 10371 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10372 /* Fall thru. */
65f38f15 10373
86c76c7b 10374 /* Branch not taken prediction relocations. */
65f38f15
AM		 10375 case R_PPC64_ADDR14_BRNTAKEN:
10376 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 10377 insn |= bfd_get_32 (output_bfd,
10378 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10379 /* Fall thru. */
86c76c7b 10380
b25116a9
AM		 10381 case R_PPC64_REL14:
10382 max_br_offset = 1 << 15;
10383 /* Fall thru. */
5bd4f169 10384
65f38f15 10385 case R_PPC64_REL24:
ad8e1ba5
AM		 10386 /* Calls to functions with a different TOC, such as calls to
10387 shared objects, need to alter the TOC pointer. This is
10388 done using a linkage stub. A REL24 branching to these
10389 linkage stubs needs to be followed by a nop, as the nop
10390 will be replaced with an instruction to restore the TOC
10391 base pointer. */
b25116a9 10392 stub_entry = NULL;
8387904d 10393 fdh = h;
ad8e1ba5 10394 if (((h != NULL
039b3fef
AM		 10395 && (((fdh = h->oh) != NULL
10396 && fdh->elf.plt.plist != NULL)
10397 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10398 || (sec != NULL
ad8e1ba5 10399 && sec->output_section != NULL
b25116a9 10400 && sec->id <= htab->top_id
ad8e1ba5
AM		 10401 && (htab->stub_group[sec->id].toc_off
10402 != htab->stub_group[input_section->id].toc_off)))
721956f4 10403 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 10404 rel, htab)) != NULL
10405 && (stub_entry->stub_type == ppc_stub_plt_call
10406 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10407 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10408 {
b25116a9 10409 bfd_boolean can_plt_call = FALSE;
721956f4 10410
eea6121a 10411 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10412 {
b25116a9
AM		 10413 unsigned long nop;
10414 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10415 if (nop == NOP
10416 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10417 {
4ce794b7 10418 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10419 contents + rel->r_offset + 4);
b25116a9 10420 can_plt_call = TRUE;
41bd81ab 10421 }
5bd4f169 10422 }
721956f4
AM		 10423
10424 if (!can_plt_call)
10425 {
ad8e1ba5
AM		 10426 if (stub_entry->stub_type == ppc_stub_plt_call)
10427 {
10428 /* If this is a plain branch rather than a branch
4fa1c237
AM		 10429 and link, don't require a nop. However, don't
10430 allow tail calls in a shared library as they
10431 will result in r2 being corrupted. */
b25116a9
AM		 10432 unsigned long br;
10433 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10434 if (info->executable && (br & 1) == 0)
b25116a9 10435 can_plt_call = TRUE;
15b552e9
AM		 10436 else
10437 stub_entry = NULL;
ad8e1ba5 10438 }
6ab189d5 10439 else if (h != NULL
039b3fef 10440 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10441 ".__libc_start_main") == 0)
10442 {
10443 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10444 can_plt_call = TRUE;
6ab189d5 10445 }
ad8e1ba5
AM		 10446 else
10447 {
10448 if (strcmp (input_section->output_section->name,
10449 ".init") == 0
10450 || strcmp (input_section->output_section->name,
10451 ".fini") == 0)
10452 (*_bfd_error_handler)
d003868e 10453 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10454 "not supported using your crt files; "
10455 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10456 input_bfd,
10457 input_section,
ad8e1ba5
AM		 10458 (long) rel->r_offset);
10459 else
10460 (*_bfd_error_handler)
d003868e 10461 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10462 "does not allow automatic multiple TOCs; "
10463 "recompile with -mminimal-toc or "
10464 "-fno-optimize-sibling-calls, "
10465 "or make `%s' extern"),
d003868e
AM		 10466 input_bfd,
10467 input_section,
ad8e1ba5
AM		 10468 (long) rel->r_offset,
10469 sym_name,
10470 sym_name);
10471 bfd_set_error (bfd_error_bad_value);
10472 ret = FALSE;
10473 }
721956f4
AM		 10474 }
10475
b25116a9
AM		 10476 if (can_plt_call
10477 && stub_entry->stub_type == ppc_stub_plt_call)
10478 unresolved_reloc = FALSE;
10479 }
10480
8387904d
AM		 10481 if (stub_entry == NULL
10482 && get_opd_info (sec) != NULL)
10483 {
10484 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 10485 bfd_vma off = (relocation + addend
10486 - sec->output_section->vma
10487 - sec->output_offset);
8387904d
AM		 10488 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10489 if (dest != (bfd_vma) -1)
10490 {
10491 relocation = dest;
10492 addend = 0;
10493 }
10494 }
10495
b25116a9
AM		 10496 /* If the branch is out of reach we ought to have a long
10497 branch stub. */
10498 from = (rel->r_offset
10499 + input_section->output_offset
10500 + input_section->output_section->vma);
10501
10502 if (stub_entry == NULL
4cc603a5 10503 && (relocation + addend - from + max_br_offset
b25116a9
AM		 10504 >= 2 * max_br_offset)
10505 && r_type != R_PPC64_ADDR14_BRTAKEN
10506 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10507 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10508 htab);
b25116a9
AM		 10509
10510 if (stub_entry != NULL)
10511 {
10512 /* Munge up the value and addend so that we call the stub
10513 rather than the procedure directly. */
10514 relocation = (stub_entry->stub_offset
10515 + stub_entry->stub_sec->output_offset
10516 + stub_entry->stub_sec->output_section->vma);
10517 addend = 0;
10518 }
10519
10520 if (insn != 0)
10521 {
10522 if (is_power4)
721956f4 10523 {
b25116a9
AM		 10524 /* Set 'a' bit. This is 0b00010 in BO field for branch
10525 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10526 for branch on CTR insns (BO == 1a00t or 1a01t). */
10527 if ((insn & (0x14 << 21)) == (0x04 << 21))
10528 insn |= 0x02 << 21;
10529 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10530 insn |= 0x08 << 21;
10531 else
10532 break;
10533 }
10534 else
10535 {
10536 /* Invert 'y' bit if not the default. */
4cc603a5 10537 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10538 insn ^= 0x01 << 21;
721956f4 10539 }
b25116a9
AM		 10540
10541 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10542 }
e86ce104 10543
06da1e8e
AM		 10544 /* NOP out calls to undefined weak functions.
10545 We can thus call a weak function without first
10546 checking whether the function is defined. */
b25116a9 10547 else if (h != NULL
039b3fef 10548 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10549 && r_type == R_PPC64_REL24
10550 && relocation == 0
4cc603a5 10551 && addend == 0)
e86ce104 10552 {
06da1e8e
AM		 10553 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10554 continue;
e86ce104 10555 }
65f38f15
AM		 10556 break;
10557 }
5bd4f169 10558
65f38f15 10559 /* Set `addend'. */
411e1bfb 10560 tls_type = 0;
65f38f15
AM		 10561 switch (r_type)
10562 {
10563 default:
10564 (*_bfd_error_handler)
d003868e
AM		 10565 (_("%B: unknown relocation type %d for symbol %s"),
10566 input_bfd, (int) r_type, sym_name);
5bd4f169 10567
65f38f15 10568 bfd_set_error (bfd_error_bad_value);
b34976b6 10569 ret = FALSE;
65f38f15 10570 continue;
5bd4f169 10571
65f38f15 10572 case R_PPC64_NONE:
411e1bfb 10573 case R_PPC64_TLS:
04c9666a
AM		 10574 case R_PPC64_GNU_VTINHERIT:
10575 case R_PPC64_GNU_VTENTRY:
65f38f15 10576 continue;
5bd4f169
AM		 10577
10578 /* GOT16 relocations. Like an ADDR16 using the symbol's
10579 address in the GOT as relocation value instead of the
411e1bfb 10580 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10581 symbol and put the symbol value there. */
411e1bfb
AM		 10582 case R_PPC64_GOT_TLSGD16:
10583 case R_PPC64_GOT_TLSGD16_LO:
10584 case R_PPC64_GOT_TLSGD16_HI:
10585 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10586 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10587 goto dogot;
10588
10589 case R_PPC64_GOT_TLSLD16:
10590 case R_PPC64_GOT_TLSLD16_LO:
10591 case R_PPC64_GOT_TLSLD16_HI:
10592 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10593 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10594 goto dogot;
10595
10596 case R_PPC64_GOT_TPREL16_DS:
10597 case R_PPC64_GOT_TPREL16_LO_DS:
10598 case R_PPC64_GOT_TPREL16_HI:
10599 case R_PPC64_GOT_TPREL16_HA:
10600 tls_type = TLS_TLS | TLS_TPREL;
10601 goto dogot;
10602
10603 case R_PPC64_GOT_DTPREL16_DS:
10604 case R_PPC64_GOT_DTPREL16_LO_DS:
10605 case R_PPC64_GOT_DTPREL16_HI:
10606 case R_PPC64_GOT_DTPREL16_HA:
10607 tls_type = TLS_TLS | TLS_DTPREL;
10608 goto dogot;
10609
65f38f15
AM		 10610 case R_PPC64_GOT16:
10611 case R_PPC64_GOT16_LO:
10612 case R_PPC64_GOT16_HI:
10613 case R_PPC64_GOT16_HA:
10614 case R_PPC64_GOT16_DS:
10615 case R_PPC64_GOT16_LO_DS:
411e1bfb 10616 dogot:
5bd4f169
AM		 10617 {
10618 /* Relocation is to the entry for this symbol in the global
10619 offset table. */
e717da7e 10620 asection *got;
d881513a 10621 bfd_vma *offp;
5bd4f169 10622 bfd_vma off;
d881513a 10623 unsigned long indx = 0;
65f38f15 10624
d881513a
AM		 10625 if (tls_type == (TLS_TLS | TLS_LD)
10626 && (h == NULL
f5385ebf 10627 || !h->elf.def_dynamic))
e717da7e 10628 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10629 else
5bd4f169 10630 {
d881513a 10631 struct got_entry *ent;
5bd4f169 10632
d881513a
AM		 10633 if (h != NULL)
10634 {
10635 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10636 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10637 &h->elf)
d881513a 10638 || (info->shared
039b3fef 10639 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10640 /* This is actually a static link, or it is a
10641 -Bsymbolic link and the symbol is defined
10642 locally, or the symbol was forced to be local
10643 because of a version file. */
10644 ;
10645 else
10646 {
039b3fef 10647 indx = h->elf.dynindx;
d881513a
AM		 10648 unresolved_reloc = FALSE;
10649 }
039b3fef 10650 ent = h->elf.got.glist;
d881513a 10651 }
411e1bfb 10652 else
5bd4f169 10653 {
d881513a
AM		 10654 if (local_got_ents == NULL)
10655 abort ();
10656 ent = local_got_ents[r_symndx];
5bd4f169 10657 }
d881513a
AM		 10658
10659 for (; ent != NULL; ent = ent->next)
4cc603a5 10660 if (ent->addend == orig_addend
e717da7e 10661 && ent->owner == input_bfd
d881513a
AM		 10662 && ent->tls_type == tls_type)
10663 break;
10664 if (ent == NULL)
10665 abort ();
10666 offp = &ent->got.offset;
5bd4f169 10667 }
411e1bfb 10668
e717da7e
AM		 10669 got = ppc64_elf_tdata (input_bfd)->got;
10670 if (got == NULL)
10671 abort ();
10672
411e1bfb
AM		 10673 /* The offset must always be a multiple of 8. We use the
10674 least significant bit to record whether we have already
10675 processed this entry. */
d881513a 10676 off = *offp;
411e1bfb
AM		 10677 if ((off & 1) != 0)
10678 off &= ~1;
5bd4f169
AM		 10679 else
10680 {
411e1bfb
AM		 10681 /* Generate relocs for the dynamic linker, except in
10682 the case of TLSLD where we'll use one entry per
10683 module. */
e717da7e
AM		 10684 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10685
d881513a 10686 *offp = off | 1;
4e795f50
AM		 10687 if ((info->shared || indx != 0)
10688 && (h == NULL
039b3fef
AM		 10689 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10690 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10691 {
e717da7e
AM		 10692 outrel.r_offset = (got->output_section->vma
10693 + got->output_offset
411e1bfb 10694 + off);
4cc603a5 10695 outrel.r_addend = addend;
d881513a 10696 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10697 {
411e1bfb 10698 outrel.r_addend = 0;
e515b051 10699 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10700 if (tls_type == (TLS_TLS | TLS_GD))
10701 {
e717da7e
AM		 10702 loc = relgot->contents;
10703 loc += (relgot->reloc_count++
d881513a
AM		 10704 * sizeof (Elf64_External_Rela));
10705 bfd_elf64_swap_reloca_out (output_bfd,
10706 &outrel, loc);
e515b051 10707 outrel.r_offset += 8;
4cc603a5 10708 outrel.r_addend = addend;
d881513a
AM		 10709 outrel.r_info
10710 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10711 }
411e1bfb 10712 }
951fd09b 10713 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10714 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10715 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10716 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10717 else if (indx == 0)
81407a69
AM		 10718 {
10719 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10720
10721 /* Write the .got section contents for the sake
10722 of prelink. */
e717da7e 10723 loc = got->contents + off;
23fbd6fa
JJ		 10724 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10725 loc);
81407a69 10726 }
411e1bfb
AM		 10727 else
10728 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10729
10730 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10731 {
10732 outrel.r_addend += relocation;
10733 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10734 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10735 }
e717da7e
AM		 10736 loc = relgot->contents;
10737 loc += (relgot->reloc_count++
411e1bfb
AM		 10738 * sizeof (Elf64_External_Rela));
10739 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10740 }
10741
ad8e1ba5 10742 /* Init the .got section contents here if we're not
81407a69 10743 emitting a reloc. */
d881513a 10744 else
411e1bfb 10745 {
4cc603a5 10746 relocation += addend;
7b609f53
AM		 10747 if (tls_type == (TLS_TLS | TLS_LD))
10748 relocation = 1;
10749 else if (tls_type != 0)
411e1bfb 10750 {
e1918d23 10751 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10752 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10753 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10754
7b609f53
AM		 10755 if (tls_type == (TLS_TLS | TLS_GD))
10756 {
10757 bfd_put_64 (output_bfd, relocation,
e717da7e 10758 got->contents + off + 8);
7b609f53
AM		 10759 relocation = 1;
10760 }
411e1bfb 10761 }
7b609f53 10762
411e1bfb 10763 bfd_put_64 (output_bfd, relocation,
e717da7e 10764 got->contents + off);
5bd4f169
AM		 10765 }
10766 }
10767
65f38f15
AM		 10768 if (off >= (bfd_vma) -2)
10769 abort ();
10770
e717da7e 10771 relocation = got->output_offset + off;
65f38f15 10772
5bd4f169 10773 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10774 addend = -TOC_BASE_OFF;
5bd4f169 10775 }
65f38f15
AM		 10776 break;
10777
10778 case R_PPC64_PLT16_HA:
10779 case R_PPC64_PLT16_HI:
10780 case R_PPC64_PLT16_LO:
10781 case R_PPC64_PLT32:
10782 case R_PPC64_PLT64:
10783 /* Relocation is to the entry for this symbol in the
10784 procedure linkage table. */
10785
10786 /* Resolve a PLT reloc against a local symbol directly,
10787 without using the procedure linkage table. */
10788 if (h == NULL)
10789 break;
10790
411e1bfb
AM		 10791 /* It's possible that we didn't make a PLT entry for this
10792 symbol. This happens when statically linking PIC code,
10793 or when using -Bsymbolic. Go find a match if there is a
10794 PLT entry. */
4ce794b7 10795 if (htab->plt != NULL)
65f38f15 10796 {
411e1bfb 10797 struct plt_entry *ent;
039b3fef 10798 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 10799 if (ent->addend == orig_addend
411e1bfb
AM		 10800 && ent->plt.offset != (bfd_vma) -1)
10801 {
4ce794b7
AM		 10802 relocation = (htab->plt->output_section->vma
10803 + htab->plt->output_offset
411e1bfb
AM		 10804 + ent->plt.offset);
10805 unresolved_reloc = FALSE;
10806 }
65f38f15 10807 }
65f38f15 10808 break;
5bd4f169 10809
0b13192e
AM		 10810 case R_PPC64_TOC:
10811 /* Relocation value is TOC base. */
10812 relocation = TOCstart;
10813 if (r_symndx == 0)
10814 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10815 else if (unresolved_reloc)
10816 ;
10817 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10818 relocation += htab->stub_group[sec->id].toc_off;
10819 else
10820 unresolved_reloc = TRUE;
ab96bf03 10821 goto dodyn;
0b13192e 10822
5bd4f169
AM		 10823 /* TOC16 relocs. We want the offset relative to the TOC base,
10824 which is the address of the start of the TOC plus 0x8000.
10825 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10826 in this order. */
65f38f15
AM		 10827 case R_PPC64_TOC16:
10828 case R_PPC64_TOC16_LO:
10829 case R_PPC64_TOC16_HI:
10830 case R_PPC64_TOC16_DS:
10831 case R_PPC64_TOC16_LO_DS:
10832 case R_PPC64_TOC16_HA:
ad8e1ba5 10833 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10834 break;
10835
10836 /* Relocate against the beginning of the section. */
65f38f15
AM		 10837 case R_PPC64_SECTOFF:
10838 case R_PPC64_SECTOFF_LO:
10839 case R_PPC64_SECTOFF_HI:
10840 case R_PPC64_SECTOFF_DS:
10841 case R_PPC64_SECTOFF_LO_DS:
10842 case R_PPC64_SECTOFF_HA:
4ce794b7 10843 if (sec != NULL)
65f38f15 10844 addend -= sec->output_section->vma;
5bd4f169
AM		 10845 break;
10846
721956f4
AM		 10847 case R_PPC64_REL14:
10848 case R_PPC64_REL14_BRNTAKEN:
10849 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10850 case R_PPC64_REL24:
10851 break;
10852
411e1bfb
AM		 10853 case R_PPC64_TPREL16:
10854 case R_PPC64_TPREL16_LO:
10855 case R_PPC64_TPREL16_HI:
10856 case R_PPC64_TPREL16_HA:
10857 case R_PPC64_TPREL16_DS:
10858 case R_PPC64_TPREL16_LO_DS:
10859 case R_PPC64_TPREL16_HIGHER:
10860 case R_PPC64_TPREL16_HIGHERA:
10861 case R_PPC64_TPREL16_HIGHEST:
10862 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10863 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10864 if (info->shared)
10865 /* The TPREL16 relocs shouldn't really be used in shared
10866 libs as they will result in DT_TEXTREL being set, but
10867 support them anyway. */
10868 goto dodyn;
10869 break;
10870
10871 case R_PPC64_DTPREL16:
10872 case R_PPC64_DTPREL16_LO:
10873 case R_PPC64_DTPREL16_HI:
10874 case R_PPC64_DTPREL16_HA:
10875 case R_PPC64_DTPREL16_DS:
10876 case R_PPC64_DTPREL16_LO_DS:
10877 case R_PPC64_DTPREL16_HIGHER:
10878 case R_PPC64_DTPREL16_HIGHERA:
10879 case R_PPC64_DTPREL16_HIGHEST:
10880 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10881 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10882 break;
10883
e515b051
AM		 10884 case R_PPC64_DTPMOD64:
10885 relocation = 1;
10886 addend = 0;
10887 goto dodyn;
10888
411e1bfb 10889 case R_PPC64_TPREL64:
e1918d23 10890 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10891 goto dodyn;
10892
10893 case R_PPC64_DTPREL64:
e1918d23 10894 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10895 /* Fall thru */
10896
65f38f15
AM		 10897 /* Relocations that may need to be propagated if this is a
10898 dynamic object. */
04c9666a 10899 case R_PPC64_REL30:
65f38f15
AM		 10900 case R_PPC64_REL32:
10901 case R_PPC64_REL64:
10902 case R_PPC64_ADDR14:
10903 case R_PPC64_ADDR14_BRNTAKEN:
10904 case R_PPC64_ADDR14_BRTAKEN:
10905 case R_PPC64_ADDR16:
10906 case R_PPC64_ADDR16_DS:
10907 case R_PPC64_ADDR16_HA:
10908 case R_PPC64_ADDR16_HI:
10909 case R_PPC64_ADDR16_HIGHER:
10910 case R_PPC64_ADDR16_HIGHERA:
10911 case R_PPC64_ADDR16_HIGHEST:
10912 case R_PPC64_ADDR16_HIGHESTA:
10913 case R_PPC64_ADDR16_LO:
10914 case R_PPC64_ADDR16_LO_DS:
10915 case R_PPC64_ADDR24:
65f38f15
AM		 10916 case R_PPC64_ADDR32:
10917 case R_PPC64_ADDR64:
10918 case R_PPC64_UADDR16:
10919 case R_PPC64_UADDR32:
10920 case R_PPC64_UADDR64:
411e1bfb 10921 dodyn:
5d1634d7 10922 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10923 break;
10924
41bd81ab
AM		 10925 if (NO_OPD_RELOCS && is_opd)
10926 break;
10927
65f38f15 10928 if ((info->shared
4e795f50 10929 && (h == NULL
039b3fef
AM		 10930 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10931 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10932 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10933 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10934 || (ELIMINATE_COPY_RELOCS
10935 && !info->shared
65f38f15 10936 && h != NULL
039b3fef 10937 && h->elf.dynindx != -1
f5385ebf
AM		 10938 && !h->elf.non_got_ref
10939 && h->elf.def_dynamic
10940 && !h->elf.def_regular))
65f38f15
AM		 10941 {
10942 Elf_Internal_Rela outrel;
b34976b6 10943 bfd_boolean skip, relocate;
65f38f15 10944 asection *sreloc;
947216bf 10945 bfd_byte *loc;
1cf1f670 10946 bfd_vma out_off;
65f38f15
AM		 10947
10948 /* When generating a dynamic object, these relocations
10949 are copied into the output file to be resolved at run
10950 time. */
10951
b34976b6
AM		 10952 skip = FALSE;
10953 relocate = FALSE;
65f38f15 10954
1cf1f670
AM		 10955 out_off = _bfd_elf_section_offset (output_bfd, info,
10956 input_section, rel->r_offset);
10957 if (out_off == (bfd_vma) -1)
b34976b6 10958 skip = TRUE;
1cf1f670 10959 else if (out_off == (bfd_vma) -2)
b34976b6 10960 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10961 out_off += (input_section->output_section->vma
10962 + input_section->output_offset);
10963 outrel.r_offset = out_off;
411e1bfb 10964 outrel.r_addend = rel->r_addend;
65f38f15 10965
1cf1f670
AM		 10966 /* Optimize unaligned reloc use. */
10967 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10968 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10969 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10970 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10971 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10972 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10973 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10974 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10975 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10976
65f38f15 10977 if (skip)
0bb2d96a 10978 memset (&outrel, 0, sizeof outrel);
039b3fef 10979 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10980 && !is_opd
10981 && r_type != R_PPC64_TOC)
039b3fef 10982 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10983 else
10984 {
41bd81ab
AM		 10985 /* This symbol is local, or marked to become local,
10986 or this is an opd section reloc which must point
10987 at a local function. */
65f38f15 10988 outrel.r_addend += relocation;
e86ce104 10989 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10990 {
3fad3c7c 10991 if (is_opd && h != NULL)
afbe61cf
AM		 10992 {
10993 /* Lie about opd entries. This case occurs
10994 when building shared libraries and we
10995 reference a function in another shared
3fad3c7c
AM		 10996 lib. The same thing happens for a weak
10997 definition in an application that's
10998 overridden by a strong definition in a
10999 shared lib. (I believe this is a generic
11000 bug in binutils handling of weak syms.)
11001 In these cases we won't use the opd
1e2f5b6e 11002 entry in this lib. */
b34976b6 11003 unresolved_reloc = FALSE;
afbe61cf 11004 }
65f38f15 11005 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 11006
11007 /* We need to relocate .opd contents for ld.so.
11008 Prelink also wants simple and consistent rules
11009 for relocs. This make all RELATIVE relocs have
11010 *r_offset equal to r_addend. */
11011 relocate = TRUE;
65f38f15
AM		 11012 }
11013 else
11014 {
11015 long indx = 0;
11016
41bd81ab 11017 if (bfd_is_abs_section (sec))
65f38f15
AM		 11018 ;
11019 else if (sec == NULL || sec->owner == NULL)
11020 {
11021 bfd_set_error (bfd_error_bad_value);
b34976b6 11022 return FALSE;
65f38f15
AM		 11023 }
11024 else
11025 {
11026 asection *osec;
11027
11028 osec = sec->output_section;
11029 indx = elf_section_data (osec)->dynindx;
11030
74541ad4
AM		 11031 if (indx == 0)
11032 {
11033 if ((osec->flags & SEC_READONLY) == 0
11034 && htab->elf.data_index_section != NULL)
11035 osec = htab->elf.data_index_section;
11036 else
11037 osec = htab->elf.text_index_section;
11038 indx = elf_section_data (osec)->dynindx;
11039 }
11040 BFD_ASSERT (indx != 0);
11041
65f38f15
AM		 11042 /* We are turning this relocation into one
11043 against a section symbol, so subtract out
11044 the output section's address but not the
11045 offset of the input section in the output
11046 section. */
11047 outrel.r_addend -= osec->vma;
11048 }
11049
11050 outrel.r_info = ELF64_R_INFO (indx, r_type);
11051 }
11052 }
11053
11054 sreloc = elf_section_data (input_section)->sreloc;
11055 if (sreloc == NULL)
11056 abort ();
11057
dfbb6ac9
AM		 11058 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11059 >= sreloc->size)
11060 abort ();
947216bf
AM		 11061 loc = sreloc->contents;
11062 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 11063 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11064
11065 /* If this reloc is against an external symbol, it will
11066 be computed at runtime, so there's no need to do
81407a69
AM		 11067 anything now. However, for the sake of prelink ensure
11068 that the section contents are a known value. */
65f38f15 11069 if (! relocate)
81407a69
AM		 11070 {
11071 unresolved_reloc = FALSE;
11072 /* The value chosen here is quite arbitrary as ld.so
11073 ignores section contents except for the special
11074 case of .opd where the contents might be accessed
11075 before relocation. Choose zero, as that won't
11076 cause reloc overflow. */
11077 relocation = 0;
11078 addend = 0;
11079 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11080 to improve backward compatibility with older
11081 versions of ld. */
11082 if (r_type == R_PPC64_ADDR64)
11083 addend = outrel.r_addend;
11084 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11085 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 11086 addend = (input_section->output_section->vma
11087 + input_section->output_offset
11088 + rel->r_offset);
81407a69 11089 }
65f38f15 11090 }
5bd4f169
AM		 11091 break;
11092
65f38f15
AM		 11093 case R_PPC64_COPY:
11094 case R_PPC64_GLOB_DAT:
11095 case R_PPC64_JMP_SLOT:
11096 case R_PPC64_RELATIVE:
11097 /* We shouldn't ever see these dynamic relocs in relocatable
11098 files. */
ae9a127f 11099 /* Fall through. */
65f38f15
AM		 11100
11101 case R_PPC64_PLTGOT16:
11102 case R_PPC64_PLTGOT16_DS:
11103 case R_PPC64_PLTGOT16_HA:
11104 case R_PPC64_PLTGOT16_HI:
11105 case R_PPC64_PLTGOT16_LO:
11106 case R_PPC64_PLTGOT16_LO_DS:
11107 case R_PPC64_PLTREL32:
11108 case R_PPC64_PLTREL64:
11109 /* These ones haven't been implemented yet. */
11110
11111 (*_bfd_error_handler)
d003868e
AM		 11112 (_("%B: relocation %s is not supported for symbol %s."),
11113 input_bfd,
4ce794b7 11114 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 11115
11116 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11117 ret = FALSE;
5bd4f169 11118 continue;
65f38f15 11119 }
5bd4f169 11120
65f38f15
AM		 11121 /* Do any further special processing. */
11122 switch (r_type)
11123 {
11124 default:
11125 break;
11126
11127 case R_PPC64_ADDR16_HA:
11128 case R_PPC64_ADDR16_HIGHERA:
11129 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 11130 case R_PPC64_TOC16_HA:
11131 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 11132 case R_PPC64_TPREL16_HA:
11133 case R_PPC64_DTPREL16_HA:
411e1bfb
AM		 11134 case R_PPC64_TPREL16_HIGHER:
11135 case R_PPC64_TPREL16_HIGHERA:
11136 case R_PPC64_TPREL16_HIGHEST:
11137 case R_PPC64_TPREL16_HIGHESTA:
11138 case R_PPC64_DTPREL16_HIGHER:
11139 case R_PPC64_DTPREL16_HIGHERA:
11140 case R_PPC64_DTPREL16_HIGHEST:
11141 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 11142 /* It's just possible that this symbol is a weak symbol
11143 that's not actually defined anywhere. In that case,
11144 'sec' would be NULL, and we should leave the symbol
11145 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 11146 if (sec == NULL)
11147 break;
11148 /* Fall thru */
11149
11150 case R_PPC64_GOT16_HA:
11151 case R_PPC64_PLTGOT16_HA:
11152 case R_PPC64_PLT16_HA:
11153 case R_PPC64_GOT_TLSGD16_HA:
11154 case R_PPC64_GOT_TLSLD16_HA:
11155 case R_PPC64_GOT_TPREL16_HA:
11156 case R_PPC64_GOT_DTPREL16_HA:
11157 /* Add 0x10000 if sign bit in 0:15 is set.
11158 Bits 0:15 are not used. */
11159 addend += 0x8000;
65f38f15
AM		 11160 break;
11161
11162 case R_PPC64_ADDR16_DS:
11163 case R_PPC64_ADDR16_LO_DS:
11164 case R_PPC64_GOT16_DS:
11165 case R_PPC64_GOT16_LO_DS:
11166 case R_PPC64_PLT16_LO_DS:
11167 case R_PPC64_SECTOFF_DS:
11168 case R_PPC64_SECTOFF_LO_DS:
11169 case R_PPC64_TOC16_DS:
11170 case R_PPC64_TOC16_LO_DS:
11171 case R_PPC64_PLTGOT16_DS:
11172 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 11173 case R_PPC64_GOT_TPREL16_DS:
11174 case R_PPC64_GOT_TPREL16_LO_DS:
11175 case R_PPC64_GOT_DTPREL16_DS:
11176 case R_PPC64_GOT_DTPREL16_LO_DS:
11177 case R_PPC64_TPREL16_DS:
11178 case R_PPC64_TPREL16_LO_DS:
11179 case R_PPC64_DTPREL16_DS:
11180 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 11181 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11182 mask = 3;
11183 /* If this reloc is against an lq insn, then the value must be
11184 a multiple of 16. This is somewhat of a hack, but the
11185 "correct" way to do this by defining _DQ forms of all the
11186 _DS relocs bloats all reloc switches in this file. It
11187 doesn't seem to make much sense to use any of these relocs
11188 in data, so testing the insn should be safe. */
494dac0c 11189 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 11190 mask = 15;
11191 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 11192 {
11193 (*_bfd_error_handler)
d003868e
AM		 11194 (_("%B: error: relocation %s not a multiple of %d"),
11195 input_bfd,
4ce794b7 11196 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11197 mask + 1);
65f38f15 11198 bfd_set_error (bfd_error_bad_value);
b34976b6 11199 ret = FALSE;
65f38f15
AM		 11200 continue;
11201 }
11202 break;
5bd4f169
AM		 11203 }
11204
239e1f3a
AM		 11205 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11206 because such sections are not SEC_ALLOC and thus ld.so will
11207 not process them. */
65f38f15 11208 if (unresolved_reloc
239e1f3a 11209 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11210 && h->elf.def_dynamic))
9c07fe7c
AM		 11211 {
11212 (*_bfd_error_handler)
d003868e
AM		 11213 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11214 input_bfd,
11215 input_section,
9c07fe7c 11216 (long) rel->r_offset,
7b609f53 11217 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11218 h->elf.root.root.string);
b34976b6 11219 ret = FALSE;
9c07fe7c 11220 }
5bd4f169 11221
65f38f15 11222 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 11223 input_bfd,
11224 input_section,
11225 contents,
411e1bfb 11226 rel->r_offset,
5bd4f169
AM		 11227 relocation,
11228 addend);
11229
ef60b7ff 11230 if (r != bfd_reloc_ok)
5bd4f169 11231 {
cd27b276
AM		 11232 if (sym_name == NULL)
11233 sym_name = "(null)";
11234 if (r == bfd_reloc_overflow)
5bd4f169 11235 {
cd27b276
AM		 11236 if (warned)
11237 continue;
11238 if (h != NULL
039b3fef 11239 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11240 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 11241 {
11242 /* Assume this is a call protected by other code that
11243 detects the symbol is undefined. If this is the case,
11244 we can safely ignore the overflow. If not, the
11245 program is hosed anyway, and a little warning isn't
11246 going to help. */
11247
11248 continue;
11249 }
11250
ef60b7ff 11251 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 11252 (info, (h ? &h->elf.root : NULL), sym_name,
11253 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11254 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11255 return FALSE;
ef60b7ff
AM		 11256 }
11257 else
11258 {
11259 (*_bfd_error_handler)
d003868e
AM		 11260 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11261 input_bfd,
11262 input_section,
7b609f53 11263 (long) rel->r_offset,
4ce794b7 11264 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 11265 sym_name,
11266 (int) r);
b34976b6 11267 ret = FALSE;
ef60b7ff 11268 }
5bd4f169 11269 }
5bd4f169
AM		 11270 }
11271
645ea6a9
AM		 11272 /* If we're emitting relocations, then shortly after this function
11273 returns, reloc offsets and addends for this section will be
11274 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 11275 file rather than the input. Save a copy of the relocs for
11276 opd_entry_value. */
4cc603a5 11277 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 11278 {
11279 bfd_size_type amt;
11280 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11281 rel = bfd_alloc (input_bfd, amt);
11282 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11283 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11284 if (rel == NULL)
11285 return FALSE;
11286 memcpy (rel, relocs, amt);
11287 }
5bd4f169
AM		 11288 return ret;
11289}
11290
754021d0
AM		 11291/* Adjust the value of any local symbols in opd sections. */
11292
11293static bfd_boolean
11294ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11295 const char *name ATTRIBUTE_UNUSED,
11296 Elf_Internal_Sym *elfsym,
11297 asection *input_sec,
11298 struct elf_link_hash_entry *h)
11299{
4025353c 11300 long *opd_adjust, adjust;
754021d0
AM		 11301 bfd_vma value;
11302
4025353c
AM		 11303 if (h != NULL)
11304 return TRUE;
11305
11306 opd_adjust = get_opd_info (input_sec);
11307 if (opd_adjust == NULL)
754021d0
AM		 11308 return TRUE;
11309
11310 value = elfsym->st_value - input_sec->output_offset;
11311 if (!info->relocatable)
11312 value -= input_sec->output_section->vma;
11313
3f764659 11314 adjust = opd_adjust[value / 8];
4025353c
AM		 11315 if (adjust == -1)
11316 elfsym->st_value = 0;
11317 else
11318 elfsym->st_value += adjust;
754021d0
AM		 11319 return TRUE;
11320}
11321
5bd4f169
AM		 11322/* Finish up dynamic symbol handling. We set the contents of various
11323 dynamic sections here. */
11324
b34976b6 11325static bfd_boolean
4ce794b7
AM		 11326ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11327 struct bfd_link_info *info,
11328 struct elf_link_hash_entry *h,
11329 Elf_Internal_Sym *sym)
5bd4f169 11330{
65f38f15 11331 struct ppc_link_hash_table *htab;
8387904d
AM		 11332 struct plt_entry *ent;
11333 Elf_Internal_Rela rela;
11334 bfd_byte *loc;
5bd4f169 11335
65f38f15 11336 htab = ppc_hash_table (info);
5bd4f169 11337
8387904d
AM		 11338 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11339 if (ent->plt.offset != (bfd_vma) -1)
11340 {
11341 /* This symbol has an entry in the procedure linkage
11342 table. Set it up. */
11343
11344 if (htab->plt == NULL
11345 || htab->relplt == NULL
11346 || htab->glink == NULL)
11347 abort ();
11348
11349 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11350 fill in the PLT entry. */
11351 rela.r_offset = (htab->plt->output_section->vma
11352 + htab->plt->output_offset
11353 + ent->plt.offset);
11354 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11355 rela.r_addend = ent->addend;
11356
11357 loc = htab->relplt->contents;
11358 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11359 * sizeof (Elf64_External_Rela));
11360 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11361 }
5bd4f169 11362
f5385ebf 11363 if (h->needs_copy)
5bd4f169 11364 {
5bd4f169 11365 Elf_Internal_Rela rela;
947216bf 11366 bfd_byte *loc;
5bd4f169 11367
65f38f15 11368 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11369
65f38f15
AM		 11370 if (h->dynindx == -1
11371 || (h->root.type != bfd_link_hash_defined
11372 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11373 || htab->relbss == NULL)
65f38f15 11374 abort ();
5bd4f169
AM		 11375
11376 rela.r_offset = (h->root.u.def.value
11377 + h->root.u.def.section->output_section->vma
11378 + h->root.u.def.section->output_offset);
11379 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11380 rela.r_addend = 0;
4ce794b7
AM		 11381 loc = htab->relbss->contents;
11382 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11383 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 11384 }
11385
5bd4f169
AM		 11386 /* Mark some specially defined symbols as absolute. */
11387 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11388 sym->st_shndx = SHN_ABS;
11389
b34976b6 11390 return TRUE;
5bd4f169
AM		 11391}
11392
65f38f15
AM		 11393/* Used to decide how to sort relocs in an optimal manner for the
11394 dynamic linker, before writing them out. */
11395
11396static enum elf_reloc_type_class
4ce794b7 11397ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11398{
04c9666a 11399 enum elf_ppc64_reloc_type r_type;
a33d1f77 11400
4ce794b7 11401 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11402 switch (r_type)
65f38f15
AM		 11403 {
11404 case R_PPC64_RELATIVE:
11405 return reloc_class_relative;
11406 case R_PPC64_JMP_SLOT:
11407 return reloc_class_plt;
11408 case R_PPC64_COPY:
11409 return reloc_class_copy;
11410 default:
11411 return reloc_class_normal;
11412 }
11413}
11414
5bd4f169
AM		 11415/* Finish up the dynamic sections. */
11416
b34976b6 11417static bfd_boolean
4ce794b7
AM		 11418ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11419 struct bfd_link_info *info)
5bd4f169 11420{
65f38f15
AM		 11421 struct ppc_link_hash_table *htab;
11422 bfd *dynobj;
5bd4f169 11423 asection *sdyn;
5bd4f169 11424
65f38f15
AM		 11425 htab = ppc_hash_table (info);
11426 dynobj = htab->elf.dynobj;
5bd4f169
AM		 11427 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11428
65f38f15 11429 if (htab->elf.dynamic_sections_created)
5bd4f169 11430 {
5bd4f169
AM		 11431 Elf64_External_Dyn *dyncon, *dynconend;
11432
4ce794b7 11433 if (sdyn == NULL || htab->got == NULL)
65f38f15 11434 abort ();
5bd4f169
AM		 11435
11436 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11437 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11438 for (; dyncon < dynconend; dyncon++)
11439 {
11440 Elf_Internal_Dyn dyn;
19397422 11441 asection *s;
5bd4f169
AM		 11442
11443 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11444
11445 switch (dyn.d_tag)
11446 {
65f38f15
AM		 11447 default:
11448 continue;
5bd4f169 11449
5d1634d7 11450 case DT_PPC64_GLINK:
4ce794b7 11451 s = htab->glink;
6348e046 11452 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11453 /* We stupidly defined DT_PPC64_GLINK to be the start
11454 of glink rather than the first entry point, which is
11455 what ld.so needs, and now have a bigger stub to
11456 support automatic multiple TOCs. */
11457 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11458 break;
11459
19397422
AM		 11460 case DT_PPC64_OPD:
11461 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11462 if (s == NULL)
11463 continue;
11464 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11465 break;
11466
11467 case DT_PPC64_OPDSZ:
11468 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11469 if (s == NULL)
11470 continue;
eea6121a 11471 dyn.d_un.d_val = s->size;
19397422
AM		 11472 break;
11473
65f38f15 11474 case DT_PLTGOT:
4ce794b7 11475 s = htab->plt;
6348e046 11476 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11477 break;
11478
11479 case DT_JMPREL:
4ce794b7 11480 s = htab->relplt;
6348e046 11481 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11482 break;
5bd4f169 11483
65f38f15 11484 case DT_PLTRELSZ:
eea6121a 11485 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11486 break;
11487
11488 case DT_RELASZ:
11489 /* Don't count procedure linkage table relocs in the
11490 overall reloc count. */
4ce794b7 11491 s = htab->relplt;
6348e046
AM		 11492 if (s == NULL)
11493 continue;
eea6121a 11494 dyn.d_un.d_val -= s->size;
6348e046
AM		 11495 break;
11496
11497 case DT_RELA:
11498 /* We may not be using the standard ELF linker script.
11499 If .rela.plt is the first .rela section, we adjust
11500 DT_RELA to not include it. */
4ce794b7 11501 s = htab->relplt;
6348e046
AM		 11502 if (s == NULL)
11503 continue;
11504 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11505 continue;
eea6121a 11506 dyn.d_un.d_ptr += s->size;
65f38f15 11507 break;
5bd4f169 11508 }
5bd4f169 11509
65f38f15 11510 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11511 }
5bd4f169
AM		 11512 }
11513
eea6121a 11514 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11515 {
11516 /* Fill in the first entry in the global offset table.
11517 We use it to hold the link-time TOCbase. */
11518 bfd_put_64 (output_bfd,
60ee0d4a 11519 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11520 htab->got->contents);
5d1634d7
AM		 11521
11522 /* Set .got entry size. */
4ce794b7 11523 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11524 }
11525
eea6121a 11526 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11527 {
11528 /* Set .plt entry size. */
4ce794b7 11529 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11530 = PLT_ENTRY_SIZE;
11531 }
11532
84f5d08e
AM		 11533 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11534 brlt ourselves if emitrelocations. */
11535 if (htab->brlt != NULL
11536 && htab->brlt->reloc_count != 0
11537 && !_bfd_elf_link_output_relocs (output_bfd,
11538 htab->brlt,
11539 &elf_section_data (htab->brlt)->rel_hdr,
11540 elf_section_data (htab->brlt)->relocs,
11541 NULL))
11542 return FALSE;
11543
e717da7e 11544 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11545 since we didn't add them to DYNOBJ. We know dynobj is the first
11546 bfd. */
e717da7e
AM		 11547 while ((dynobj = dynobj->link_next) != NULL)
11548 {
11549 asection *s;
7b53ace3 11550
ee75fd95 11551 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11552 continue;
11553
e717da7e
AM		 11554 s = ppc64_elf_tdata (dynobj)->got;
11555 if (s != NULL
eea6121a 11556 && s->size != 0
e717da7e
AM		 11557 && s->output_section != bfd_abs_section_ptr
11558 && !bfd_set_section_contents (output_bfd, s->output_section,
11559 s->contents, s->output_offset,
eea6121a 11560 s->size))
e717da7e
AM		 11561 return FALSE;
11562 s = ppc64_elf_tdata (dynobj)->relgot;
11563 if (s != NULL
eea6121a 11564 && s->size != 0
e717da7e
AM		 11565 && s->output_section != bfd_abs_section_ptr
11566 && !bfd_set_section_contents (output_bfd, s->output_section,
11567 s->contents, s->output_offset,
eea6121a 11568 s->size))
e717da7e
AM		 11569 return FALSE;
11570 }
f6c52c13 11571
b34976b6 11572 return TRUE;
5bd4f169
AM		 11573}
11574
5bd4f169 11575#include "elf64-target.h"
GDB Binutils - Deliverables
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