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2007-02-05 Dave Brolley <brolley@redhat.com>
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
bce50a28 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
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
12 the Free Software Foundation; either version 2 of the License, or
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
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 27
183e98be 28#include <stdarg.h>
5bd4f169
AM		 29#include "bfd.h"
30#include "sysdep.h"
31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
04c9666a 34#include "elf/ppc64.h"
5d1634d7 35#include "elf64-ppc.h"
5bd4f169 36
805fc799 37static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 38 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 39static bfd_reloc_status_type ppc64_elf_branch_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 41static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 43static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 45static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 47static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 49static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 51static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 53static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 55static bfd_vma opd_entry_value
56 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 57
ad8e1ba5
AM		 58#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
59#define TARGET_LITTLE_NAME "elf64-powerpcle"
60#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
61#define TARGET_BIG_NAME "elf64-powerpc"
62#define ELF_ARCH bfd_arch_powerpc
63#define ELF_MACHINE_CODE EM_PPC64
64#define ELF_MAXPAGESIZE 0x10000
24718e3b 65#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM		 66#define elf_info_to_howto ppc64_elf_info_to_howto
67
68#define elf_backend_want_got_sym 0
69#define elf_backend_want_plt_sym 0
70#define elf_backend_plt_alignment 3
71#define elf_backend_plt_not_loaded 1
ad8e1ba5 72#define elf_backend_got_header_size 8
ad8e1ba5
AM		 73#define elf_backend_can_gc_sections 1
74#define elf_backend_can_refcount 1
75#define elf_backend_rela_normal 1
76
e717da7e 77#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 78#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
79#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
80#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
81#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
82#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 83#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 84
85#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 86#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
87#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 88#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 89#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
90#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 91#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d 92#define elf_backend_check_directives ppc64_elf_check_directives
97fed1c9 93#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 94#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 95#define elf_backend_check_relocs ppc64_elf_check_relocs
64d03ab5 96#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 97#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
98#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
99#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
100#define elf_backend_hide_symbol ppc64_elf_hide_symbol
101#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
102#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 103#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 104#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 105#define elf_backend_relocate_section ppc64_elf_relocate_section
106#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
107#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
108#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 109#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 110#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 111
5bd4f169
AM		 112/* The name of the dynamic interpreter. This is put in the .interp
113 section. */
114#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
115
116/* The size in bytes of an entry in the procedure linkage table. */
117#define PLT_ENTRY_SIZE 24
118
119/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 120#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 121
122/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 123#define TOC_BASE_OFF 0x8000
124
125/* Offset of tp and dtp pointers from start of TLS block. */
126#define TP_OFFSET 0x7000
127#define DTP_OFFSET 0x8000
5bd4f169 128
ad8e1ba5
AM		 129/* .plt call stub instructions. The normal stub is like this, but
130 sometimes the .plt entry crosses a 64k boundary and we need to
131 insert an addis to adjust r12. */
132#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 133#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
134#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
135#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
136#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
137#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
138 /* ld %r11,xxx+16@l(%r12) */
139#define BCTR 0x4e800420 /* bctr */
140
5d1634d7 141
ee4bf8d2 142#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ad8e1ba5
AM		 143#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
144#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
145
146#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
147
ee4bf8d2 148/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 149#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 150 /* 0: */
151 /* .quad plt0-1f */
152 /* __glink: */
153#define MFLR_R12 0x7d8802a6 /* mflr %12 */
154#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
155 /* 1: */
156#define MFLR_R11 0x7d6802a6 /* mflr %11 */
157#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
158#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
159#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
160 /* ld %11,0(%12) */
161 /* ld %2,8(%12) */
162 /* mtctr %11 */
163 /* ld %11,16(%12) */
164 /* bctr */
5d1634d7
AM		 165
166/* Pad with this. */
167#define NOP 0x60000000
168
721956f4
AM		 169/* Some other nops. */
170#define CROR_151515 0x4def7b82
171#define CROR_313131 0x4ffffb82
172
cedb70c5 173/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 174#define LI_R0_0 0x38000000 /* li %r0,0 */
175#define B_DOT 0x48000000 /* b . */
176
177/* After that, we need two instructions to load the index, followed by
178 a branch. */
179#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 180#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 181
deb0e272
AM		 182/* Instructions used by the save and restore reg functions. */
183#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
184#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
185#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
186#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 187#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
188#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 189#define LI_R12_0 0x39800000 /* li %r12,0 */
190#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
191#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
192#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 193#define BLR 0x4e800020 /* blr */
194
41bd81ab
AM		 195/* Since .opd is an array of descriptors and each entry will end up
196 with identical R_PPC64_RELATIVE relocs, there is really no need to
197 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 198 relocate .opd without reloc entries. */
41bd81ab
AM		 199#ifndef NO_OPD_RELOCS
200#define NO_OPD_RELOCS 0
201#endif
5bd4f169 202\f
f5e87a1d 203#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 204
5bd4f169 205/* Relocation HOWTO's. */
04c9666a 206static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 207
208static reloc_howto_type ppc64_elf_howto_raw[] = {
209 /* This reloc does nothing. */
210 HOWTO (R_PPC64_NONE, /* type */
211 0, /* rightshift */
411e1bfb
AM		 212 2, /* size (0 = byte, 1 = short, 2 = long) */
213 32, /* bitsize */
b34976b6 214 FALSE, /* pc_relative */
5bd4f169 215 0, /* bitpos */
f5e87a1d 216 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC64_NONE", /* name */
b34976b6 219 FALSE, /* partial_inplace */
d006db6c 220 0, /* src_mask */
5bd4f169 221 0, /* dst_mask */
b34976b6 222 FALSE), /* pcrel_offset */
5bd4f169
AM		 223
224 /* A standard 32 bit relocation. */
225 HOWTO (R_PPC64_ADDR32, /* type */
226 0, /* rightshift */
227 2, /* size (0 = byte, 1 = short, 2 = long) */
228 32, /* bitsize */
b34976b6 229 FALSE, /* pc_relative */
5bd4f169
AM		 230 0, /* bitpos */
231 complain_overflow_bitfield, /* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_PPC64_ADDR32", /* name */
b34976b6 234 FALSE, /* partial_inplace */
5bd4f169
AM		 235 0, /* src_mask */
236 0xffffffff, /* dst_mask */
b34976b6 237 FALSE), /* pcrel_offset */
5bd4f169
AM		 238
239 /* An absolute 26 bit branch; the lower two bits must be zero.
240 FIXME: we don't check that, we just clear them. */
241 HOWTO (R_PPC64_ADDR24, /* type */
242 0, /* rightshift */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
244 26, /* bitsize */
b34976b6 245 FALSE, /* pc_relative */
5bd4f169
AM		 246 0, /* bitpos */
247 complain_overflow_bitfield, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC64_ADDR24", /* name */
b34976b6 250 FALSE, /* partial_inplace */
d006db6c 251 0, /* src_mask */
f5e87a1d 252 0x03fffffc, /* dst_mask */
b34976b6 253 FALSE), /* pcrel_offset */
5bd4f169
AM		 254
255 /* A standard 16 bit relocation. */
256 HOWTO (R_PPC64_ADDR16, /* type */
257 0, /* rightshift */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
259 16, /* bitsize */
b34976b6 260 FALSE, /* pc_relative */
5bd4f169
AM		 261 0, /* bitpos */
262 complain_overflow_bitfield, /* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_PPC64_ADDR16", /* name */
b34976b6 265 FALSE, /* partial_inplace */
5bd4f169
AM		 266 0, /* src_mask */
267 0xffff, /* dst_mask */
b34976b6 268 FALSE), /* pcrel_offset */
5bd4f169
AM		 269
270 /* A 16 bit relocation without overflow. */
271 HOWTO (R_PPC64_ADDR16_LO, /* type */
272 0, /* rightshift */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
b34976b6 275 FALSE, /* pc_relative */
5bd4f169
AM		 276 0, /* bitpos */
277 complain_overflow_dont,/* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC64_ADDR16_LO", /* name */
b34976b6 280 FALSE, /* partial_inplace */
5bd4f169
AM		 281 0, /* src_mask */
282 0xffff, /* dst_mask */
b34976b6 283 FALSE), /* pcrel_offset */
5bd4f169
AM		 284
285 /* Bits 16-31 of an address. */
286 HOWTO (R_PPC64_ADDR16_HI, /* type */
287 16, /* rightshift */
288 1, /* size (0 = byte, 1 = short, 2 = long) */
289 16, /* bitsize */
b34976b6 290 FALSE, /* pc_relative */
5bd4f169
AM		 291 0, /* bitpos */
292 complain_overflow_dont, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* special_function */
294 "R_PPC64_ADDR16_HI", /* name */
b34976b6 295 FALSE, /* partial_inplace */
5bd4f169
AM		 296 0, /* src_mask */
297 0xffff, /* dst_mask */
b34976b6 298 FALSE), /* pcrel_offset */
5bd4f169
AM		 299
300 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
301 bits, treated as a signed number, is negative. */
302 HOWTO (R_PPC64_ADDR16_HA, /* type */
303 16, /* rightshift */
304 1, /* size (0 = byte, 1 = short, 2 = long) */
305 16, /* bitsize */
b34976b6 306 FALSE, /* pc_relative */
5bd4f169
AM		 307 0, /* bitpos */
308 complain_overflow_dont, /* complain_on_overflow */
805fc799 309 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 310 "R_PPC64_ADDR16_HA", /* name */
b34976b6 311 FALSE, /* partial_inplace */
5bd4f169
AM		 312 0, /* src_mask */
313 0xffff, /* dst_mask */
b34976b6 314 FALSE), /* pcrel_offset */
5bd4f169
AM		 315
316 /* An absolute 16 bit branch; the lower two bits must be zero.
317 FIXME: we don't check that, we just clear them. */
318 HOWTO (R_PPC64_ADDR14, /* type */
319 0, /* rightshift */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
321 16, /* bitsize */
b34976b6 322 FALSE, /* pc_relative */
5bd4f169
AM		 323 0, /* bitpos */
324 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 325 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 326 "R_PPC64_ADDR14", /* name */
b34976b6 327 FALSE, /* partial_inplace */
d006db6c 328 0, /* src_mask */
f5e87a1d 329 0x0000fffc, /* dst_mask */
b34976b6 330 FALSE), /* pcrel_offset */
5bd4f169
AM		 331
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is expected to be taken. The lower two
334 bits must be zero. */
335 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
b34976b6 339 FALSE, /* pc_relative */
5bd4f169
AM		 340 0, /* bitpos */
341 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 342 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 343 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 344 FALSE, /* partial_inplace */
d006db6c 345 0, /* src_mask */
f5e87a1d 346 0x0000fffc, /* dst_mask */
b34976b6 347 FALSE), /* pcrel_offset */
5bd4f169
AM		 348
349 /* An absolute 16 bit branch, for which bit 10 should be set to
350 indicate that the branch is not expected to be taken. The lower
351 two bits must be zero. */
352 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 16, /* bitsize */
b34976b6 356 FALSE, /* pc_relative */
5bd4f169
AM		 357 0, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 359 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 360 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 361 FALSE, /* partial_inplace */
d006db6c 362 0, /* src_mask */
f5e87a1d 363 0x0000fffc, /* dst_mask */
b34976b6 364 FALSE), /* pcrel_offset */
5bd4f169
AM		 365
366 /* A relative 26 bit branch; the lower two bits must be zero. */
367 HOWTO (R_PPC64_REL24, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 26, /* bitsize */
b34976b6 371 TRUE, /* pc_relative */
5bd4f169
AM		 372 0, /* bitpos */
373 complain_overflow_signed, /* complain_on_overflow */
2441e016 374 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 375 "R_PPC64_REL24", /* name */
b34976b6 376 FALSE, /* partial_inplace */
d006db6c 377 0, /* src_mask */
f5e87a1d 378 0x03fffffc, /* dst_mask */
b34976b6 379 TRUE), /* pcrel_offset */
5bd4f169
AM		 380
381 /* A relative 16 bit branch; the lower two bits must be zero. */
382 HOWTO (R_PPC64_REL14, /* type */
383 0, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 16, /* bitsize */
b34976b6 386 TRUE, /* pc_relative */
5bd4f169
AM		 387 0, /* bitpos */
388 complain_overflow_signed, /* complain_on_overflow */
2441e016 389 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 390 "R_PPC64_REL14", /* name */
b34976b6 391 FALSE, /* partial_inplace */
d006db6c 392 0, /* src_mask */
f5e87a1d 393 0x0000fffc, /* dst_mask */
b34976b6 394 TRUE), /* pcrel_offset */
5bd4f169
AM		 395
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is expected to be taken. The lower two bits must be
398 zero. */
399 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
400 0, /* rightshift */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
402 16, /* bitsize */
b34976b6 403 TRUE, /* pc_relative */
5bd4f169
AM		 404 0, /* bitpos */
405 complain_overflow_signed, /* complain_on_overflow */
805fc799 406 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 407 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 408 FALSE, /* partial_inplace */
d006db6c 409 0, /* src_mask */
f5e87a1d 410 0x0000fffc, /* dst_mask */
b34976b6 411 TRUE), /* pcrel_offset */
5bd4f169
AM		 412
413 /* A relative 16 bit branch. Bit 10 should be set to indicate that
414 the branch is not expected to be taken. The lower two bits must
415 be zero. */
416 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
417 0, /* rightshift */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
419 16, /* bitsize */
b34976b6 420 TRUE, /* pc_relative */
5bd4f169
AM		 421 0, /* bitpos */
422 complain_overflow_signed, /* complain_on_overflow */
805fc799 423 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 424 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 425 FALSE, /* partial_inplace */
d006db6c 426 0, /* src_mask */
f5e87a1d 427 0x0000fffc, /* dst_mask */
b34976b6 428 TRUE), /* pcrel_offset */
5bd4f169
AM		 429
430 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
431 symbol. */
432 HOWTO (R_PPC64_GOT16, /* type */
433 0, /* rightshift */
434 1, /* size (0 = byte, 1 = short, 2 = long) */
435 16, /* bitsize */
b34976b6 436 FALSE, /* pc_relative */
5bd4f169
AM		 437 0, /* bitpos */
438 complain_overflow_signed, /* complain_on_overflow */
805fc799 439 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 440 "R_PPC64_GOT16", /* name */
b34976b6 441 FALSE, /* partial_inplace */
5bd4f169
AM		 442 0, /* src_mask */
443 0xffff, /* dst_mask */
b34976b6 444 FALSE), /* pcrel_offset */
5bd4f169
AM		 445
446 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
447 the symbol. */
448 HOWTO (R_PPC64_GOT16_LO, /* type */
449 0, /* rightshift */
450 1, /* size (0 = byte, 1 = short, 2 = long) */
451 16, /* bitsize */
b34976b6 452 FALSE, /* pc_relative */
5bd4f169
AM		 453 0, /* bitpos */
454 complain_overflow_dont, /* complain_on_overflow */
805fc799 455 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 456 "R_PPC64_GOT16_LO", /* name */
b34976b6 457 FALSE, /* partial_inplace */
5bd4f169
AM		 458 0, /* src_mask */
459 0xffff, /* dst_mask */
b34976b6 460 FALSE), /* pcrel_offset */
5bd4f169
AM		 461
462 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
463 the symbol. */
464 HOWTO (R_PPC64_GOT16_HI, /* type */
465 16, /* rightshift */
466 1, /* size (0 = byte, 1 = short, 2 = long) */
467 16, /* bitsize */
b34976b6 468 FALSE, /* pc_relative */
5bd4f169
AM		 469 0, /* bitpos */
470 complain_overflow_dont,/* complain_on_overflow */
805fc799 471 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 472 "R_PPC64_GOT16_HI", /* name */
b34976b6 473 FALSE, /* partial_inplace */
5bd4f169
AM		 474 0, /* src_mask */
475 0xffff, /* dst_mask */
b34976b6 476 FALSE), /* pcrel_offset */
5bd4f169
AM		 477
478 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
479 the symbol. */
480 HOWTO (R_PPC64_GOT16_HA, /* type */
481 16, /* rightshift */
482 1, /* size (0 = byte, 1 = short, 2 = long) */
483 16, /* bitsize */
b34976b6 484 FALSE, /* pc_relative */
5bd4f169
AM		 485 0, /* bitpos */
486 complain_overflow_dont,/* complain_on_overflow */
805fc799 487 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 488 "R_PPC64_GOT16_HA", /* name */
b34976b6 489 FALSE, /* partial_inplace */
5bd4f169
AM		 490 0, /* src_mask */
491 0xffff, /* dst_mask */
b34976b6 492 FALSE), /* pcrel_offset */
5bd4f169
AM		 493
494 /* This is used only by the dynamic linker. The symbol should exist
495 both in the object being run and in some shared library. The
496 dynamic linker copies the data addressed by the symbol from the
497 shared library into the object, because the object being
498 run has to have the data at some particular address. */
499 HOWTO (R_PPC64_COPY, /* type */
500 0, /* rightshift */
f5e87a1d
AM		 501 0, /* this one is variable size */
502 0, /* bitsize */
b34976b6 503 FALSE, /* pc_relative */
5bd4f169 504 0, /* bitpos */
f5e87a1d
AM		 505 complain_overflow_dont, /* complain_on_overflow */
506 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 507 "R_PPC64_COPY", /* name */
b34976b6 508 FALSE, /* partial_inplace */
5bd4f169
AM		 509 0, /* src_mask */
510 0, /* dst_mask */
b34976b6 511 FALSE), /* pcrel_offset */
5bd4f169
AM		 512
513 /* Like R_PPC64_ADDR64, but used when setting global offset table
514 entries. */
515 HOWTO (R_PPC64_GLOB_DAT, /* type */
516 0, /* rightshift */
517 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
518 64, /* bitsize */
b34976b6 519 FALSE, /* pc_relative */
5bd4f169
AM		 520 0, /* bitpos */
521 complain_overflow_dont, /* complain_on_overflow */
805fc799 522 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 523 "R_PPC64_GLOB_DAT", /* name */
b34976b6 524 FALSE, /* partial_inplace */
5bd4f169 525 0, /* src_mask */
f5e87a1d 526 ONES (64), /* dst_mask */
b34976b6 527 FALSE), /* pcrel_offset */
5bd4f169
AM		 528
529 /* Created by the link editor. Marks a procedure linkage table
530 entry for a symbol. */
531 HOWTO (R_PPC64_JMP_SLOT, /* type */
532 0, /* rightshift */
533 0, /* size (0 = byte, 1 = short, 2 = long) */
534 0, /* bitsize */
b34976b6 535 FALSE, /* pc_relative */
5bd4f169
AM		 536 0, /* bitpos */
537 complain_overflow_dont, /* complain_on_overflow */
805fc799 538 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 539 "R_PPC64_JMP_SLOT", /* name */
b34976b6 540 FALSE, /* partial_inplace */
5bd4f169
AM		 541 0, /* src_mask */
542 0, /* dst_mask */
b34976b6 543 FALSE), /* pcrel_offset */
5bd4f169
AM		 544
545 /* Used only by the dynamic linker. When the object is run, this
546 doubleword64 is set to the load address of the object, plus the
547 addend. */
548 HOWTO (R_PPC64_RELATIVE, /* type */
549 0, /* rightshift */
550 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
551 64, /* bitsize */
b34976b6 552 FALSE, /* pc_relative */
5bd4f169
AM		 553 0, /* bitpos */
554 complain_overflow_dont, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC64_RELATIVE", /* name */
b34976b6 557 FALSE, /* partial_inplace */
5bd4f169 558 0, /* src_mask */
f5e87a1d 559 ONES (64), /* dst_mask */
b34976b6 560 FALSE), /* pcrel_offset */
5bd4f169
AM		 561
562 /* Like R_PPC64_ADDR32, but may be unaligned. */
563 HOWTO (R_PPC64_UADDR32, /* type */
564 0, /* rightshift */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
566 32, /* bitsize */
b34976b6 567 FALSE, /* pc_relative */
5bd4f169
AM		 568 0, /* bitpos */
569 complain_overflow_bitfield, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC64_UADDR32", /* name */
b34976b6 572 FALSE, /* partial_inplace */
5bd4f169
AM		 573 0, /* src_mask */
574 0xffffffff, /* dst_mask */
b34976b6 575 FALSE), /* pcrel_offset */
5bd4f169
AM		 576
577 /* Like R_PPC64_ADDR16, but may be unaligned. */
578 HOWTO (R_PPC64_UADDR16, /* type */
579 0, /* rightshift */
580 1, /* size (0 = byte, 1 = short, 2 = long) */
581 16, /* bitsize */
b34976b6 582 FALSE, /* pc_relative */
5bd4f169
AM		 583 0, /* bitpos */
584 complain_overflow_bitfield, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC64_UADDR16", /* name */
b34976b6 587 FALSE, /* partial_inplace */
5bd4f169
AM		 588 0, /* src_mask */
589 0xffff, /* dst_mask */
b34976b6 590 FALSE), /* pcrel_offset */
5bd4f169
AM		 591
592 /* 32-bit PC relative. */
593 HOWTO (R_PPC64_REL32, /* type */
594 0, /* rightshift */
595 2, /* size (0 = byte, 1 = short, 2 = long) */
596 32, /* bitsize */
b34976b6 597 TRUE, /* pc_relative */
5bd4f169 598 0, /* bitpos */
cedb70c5 599 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 600 complain_overflow_signed, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC64_REL32", /* name */
b34976b6 603 FALSE, /* partial_inplace */
5bd4f169
AM		 604 0, /* src_mask */
605 0xffffffff, /* dst_mask */
b34976b6 606 TRUE), /* pcrel_offset */
5bd4f169 607
10ed1bba 608 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 609 HOWTO (R_PPC64_PLT32, /* type */
610 0, /* rightshift */
611 2, /* size (0 = byte, 1 = short, 2 = long) */
612 32, /* bitsize */
b34976b6 613 FALSE, /* pc_relative */
5bd4f169
AM		 614 0, /* bitpos */
615 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 616 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 617 "R_PPC64_PLT32", /* name */
b34976b6 618 FALSE, /* partial_inplace */
5bd4f169 619 0, /* src_mask */
f5e87a1d 620 0xffffffff, /* dst_mask */
b34976b6 621 FALSE), /* pcrel_offset */
5bd4f169
AM		 622
623 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
624 FIXME: R_PPC64_PLTREL32 not supported. */
625 HOWTO (R_PPC64_PLTREL32, /* type */
626 0, /* rightshift */
627 2, /* size (0 = byte, 1 = short, 2 = long) */
628 32, /* bitsize */
b34976b6 629 TRUE, /* pc_relative */
5bd4f169
AM		 630 0, /* bitpos */
631 complain_overflow_signed, /* complain_on_overflow */
632 bfd_elf_generic_reloc, /* special_function */
633 "R_PPC64_PLTREL32", /* name */
b34976b6 634 FALSE, /* partial_inplace */
5bd4f169 635 0, /* src_mask */
f5e87a1d 636 0xffffffff, /* dst_mask */
b34976b6 637 TRUE), /* pcrel_offset */
5bd4f169
AM		 638
639 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
640 the symbol. */
641 HOWTO (R_PPC64_PLT16_LO, /* type */
642 0, /* rightshift */
643 1, /* size (0 = byte, 1 = short, 2 = long) */
644 16, /* bitsize */
b34976b6 645 FALSE, /* pc_relative */
5bd4f169
AM		 646 0, /* bitpos */
647 complain_overflow_dont, /* complain_on_overflow */
805fc799 648 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 649 "R_PPC64_PLT16_LO", /* name */
b34976b6 650 FALSE, /* partial_inplace */
5bd4f169
AM		 651 0, /* src_mask */
652 0xffff, /* dst_mask */
b34976b6 653 FALSE), /* pcrel_offset */
5bd4f169
AM		 654
655 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
656 the symbol. */
657 HOWTO (R_PPC64_PLT16_HI, /* type */
658 16, /* rightshift */
659 1, /* size (0 = byte, 1 = short, 2 = long) */
660 16, /* bitsize */
b34976b6 661 FALSE, /* pc_relative */
5bd4f169
AM		 662 0, /* bitpos */
663 complain_overflow_dont, /* complain_on_overflow */
805fc799 664 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 665 "R_PPC64_PLT16_HI", /* name */
b34976b6 666 FALSE, /* partial_inplace */
5bd4f169
AM		 667 0, /* src_mask */
668 0xffff, /* dst_mask */
b34976b6 669 FALSE), /* pcrel_offset */
5bd4f169
AM		 670
671 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
672 the symbol. */
673 HOWTO (R_PPC64_PLT16_HA, /* type */
674 16, /* rightshift */
675 1, /* size (0 = byte, 1 = short, 2 = long) */
676 16, /* bitsize */
b34976b6 677 FALSE, /* pc_relative */
5bd4f169
AM		 678 0, /* bitpos */
679 complain_overflow_dont, /* complain_on_overflow */
805fc799 680 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 681 "R_PPC64_PLT16_HA", /* name */
b34976b6 682 FALSE, /* partial_inplace */
5bd4f169
AM		 683 0, /* src_mask */
684 0xffff, /* dst_mask */
b34976b6 685 FALSE), /* pcrel_offset */
5bd4f169 686
c061c2d8 687 /* 16-bit section relative relocation. */
5bd4f169
AM		 688 HOWTO (R_PPC64_SECTOFF, /* type */
689 0, /* rightshift */
c061c2d8
AM		 690 1, /* size (0 = byte, 1 = short, 2 = long) */
691 16, /* bitsize */
b34976b6 692 FALSE, /* pc_relative */
5bd4f169
AM		 693 0, /* bitpos */
694 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 695 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 696 "R_PPC64_SECTOFF", /* name */
b34976b6 697 FALSE, /* partial_inplace */
5bd4f169 698 0, /* src_mask */
c061c2d8 699 0xffff, /* dst_mask */
b34976b6 700 FALSE), /* pcrel_offset */
5bd4f169 701
c061c2d8 702 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 703 HOWTO (R_PPC64_SECTOFF_LO, /* type */
704 0, /* rightshift */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
706 16, /* bitsize */
b34976b6 707 FALSE, /* pc_relative */
5bd4f169
AM		 708 0, /* bitpos */
709 complain_overflow_dont, /* complain_on_overflow */
805fc799 710 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 711 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 712 FALSE, /* partial_inplace */
5bd4f169
AM		 713 0, /* src_mask */
714 0xffff, /* dst_mask */
b34976b6 715 FALSE), /* pcrel_offset */
5bd4f169
AM		 716
717 /* 16-bit upper half section relative relocation. */
718 HOWTO (R_PPC64_SECTOFF_HI, /* type */
719 16, /* rightshift */
720 1, /* size (0 = byte, 1 = short, 2 = long) */
721 16, /* bitsize */
b34976b6 722 FALSE, /* pc_relative */
5bd4f169
AM		 723 0, /* bitpos */
724 complain_overflow_dont, /* complain_on_overflow */
805fc799 725 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 726 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 727 FALSE, /* partial_inplace */
5bd4f169
AM		 728 0, /* src_mask */
729 0xffff, /* dst_mask */
b34976b6 730 FALSE), /* pcrel_offset */
5bd4f169
AM		 731
732 /* 16-bit upper half adjusted section relative relocation. */
733 HOWTO (R_PPC64_SECTOFF_HA, /* type */
734 16, /* rightshift */
735 1, /* size (0 = byte, 1 = short, 2 = long) */
736 16, /* bitsize */
b34976b6 737 FALSE, /* pc_relative */
5bd4f169
AM		 738 0, /* bitpos */
739 complain_overflow_dont, /* complain_on_overflow */
805fc799 740 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 741 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 742 FALSE, /* partial_inplace */
5bd4f169
AM		 743 0, /* src_mask */
744 0xffff, /* dst_mask */
b34976b6 745 FALSE), /* pcrel_offset */
5bd4f169 746
04c9666a
AM		 747 /* Like R_PPC64_REL24 without touching the two least significant bits. */
748 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 749 2, /* rightshift */
750 2, /* size (0 = byte, 1 = short, 2 = long) */
751 30, /* bitsize */
b34976b6 752 TRUE, /* pc_relative */
5bd4f169
AM		 753 0, /* bitpos */
754 complain_overflow_dont, /* complain_on_overflow */
755 bfd_elf_generic_reloc, /* special_function */
04c9666a 756 "R_PPC64_REL30", /* name */
b34976b6 757 FALSE, /* partial_inplace */
d006db6c 758 0, /* src_mask */
5bd4f169 759 0xfffffffc, /* dst_mask */
b34976b6 760 TRUE), /* pcrel_offset */
5bd4f169
AM		 761
762 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
763
764 /* A standard 64-bit relocation. */
765 HOWTO (R_PPC64_ADDR64, /* type */
766 0, /* rightshift */
767 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
768 64, /* bitsize */
b34976b6 769 FALSE, /* pc_relative */
5bd4f169
AM		 770 0, /* bitpos */
771 complain_overflow_dont, /* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_PPC64_ADDR64", /* name */
b34976b6 774 FALSE, /* partial_inplace */
5bd4f169 775 0, /* src_mask */
f5e87a1d 776 ONES (64), /* dst_mask */
b34976b6 777 FALSE), /* pcrel_offset */
5bd4f169
AM		 778
779 /* The bits 32-47 of an address. */
780 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
781 32, /* rightshift */
782 1, /* size (0 = byte, 1 = short, 2 = long) */
783 16, /* bitsize */
b34976b6 784 FALSE, /* pc_relative */
5bd4f169
AM		 785 0, /* bitpos */
786 complain_overflow_dont, /* complain_on_overflow */
787 bfd_elf_generic_reloc, /* special_function */
788 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 789 FALSE, /* partial_inplace */
5bd4f169
AM		 790 0, /* src_mask */
791 0xffff, /* dst_mask */
b34976b6 792 FALSE), /* pcrel_offset */
5bd4f169
AM		 793
794 /* The bits 32-47 of an address, plus 1 if the contents of the low
795 16 bits, treated as a signed number, is negative. */
796 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
797 32, /* rightshift */
798 1, /* size (0 = byte, 1 = short, 2 = long) */
799 16, /* bitsize */
b34976b6 800 FALSE, /* pc_relative */
5bd4f169
AM		 801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
805fc799 803 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 804 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 805 FALSE, /* partial_inplace */
5bd4f169
AM		 806 0, /* src_mask */
807 0xffff, /* dst_mask */
b34976b6 808 FALSE), /* pcrel_offset */
5bd4f169
AM		 809
810 /* The bits 48-63 of an address. */
811 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
812 48, /* rightshift */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
814 16, /* bitsize */
b34976b6 815 FALSE, /* pc_relative */
5bd4f169
AM		 816 0, /* bitpos */
817 complain_overflow_dont, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 820 FALSE, /* partial_inplace */
5bd4f169
AM		 821 0, /* src_mask */
822 0xffff, /* dst_mask */
b34976b6 823 FALSE), /* pcrel_offset */
5bd4f169
AM		 824
825 /* The bits 48-63 of an address, plus 1 if the contents of the low
826 16 bits, treated as a signed number, is negative. */
827 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
828 48, /* rightshift */
829 1, /* size (0 = byte, 1 = short, 2 = long) */
830 16, /* bitsize */
b34976b6 831 FALSE, /* pc_relative */
5bd4f169
AM		 832 0, /* bitpos */
833 complain_overflow_dont, /* complain_on_overflow */
805fc799 834 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 835 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 836 FALSE, /* partial_inplace */
5bd4f169
AM		 837 0, /* src_mask */
838 0xffff, /* dst_mask */
b34976b6 839 FALSE), /* pcrel_offset */
5bd4f169
AM		 840
841 /* Like ADDR64, but may be unaligned. */
842 HOWTO (R_PPC64_UADDR64, /* type */
843 0, /* rightshift */
844 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
845 64, /* bitsize */
b34976b6 846 FALSE, /* pc_relative */
5bd4f169
AM		 847 0, /* bitpos */
848 complain_overflow_dont, /* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_PPC64_UADDR64", /* name */
b34976b6 851 FALSE, /* partial_inplace */
5bd4f169 852 0, /* src_mask */
f5e87a1d 853 ONES (64), /* dst_mask */
b34976b6 854 FALSE), /* pcrel_offset */
5bd4f169
AM		 855
856 /* 64-bit relative relocation. */
857 HOWTO (R_PPC64_REL64, /* type */
858 0, /* rightshift */
859 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
860 64, /* bitsize */
b34976b6 861 TRUE, /* pc_relative */
5bd4f169
AM		 862 0, /* bitpos */
863 complain_overflow_dont, /* complain_on_overflow */
864 bfd_elf_generic_reloc, /* special_function */
865 "R_PPC64_REL64", /* name */
b34976b6 866 FALSE, /* partial_inplace */
5bd4f169 867 0, /* src_mask */
f5e87a1d 868 ONES (64), /* dst_mask */
b34976b6 869 TRUE), /* pcrel_offset */
5bd4f169 870
cedb70c5 871 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 872 HOWTO (R_PPC64_PLT64, /* type */
873 0, /* rightshift */
874 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
875 64, /* bitsize */
b34976b6 876 FALSE, /* pc_relative */
5bd4f169
AM		 877 0, /* bitpos */
878 complain_overflow_dont, /* complain_on_overflow */
805fc799 879 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 880 "R_PPC64_PLT64", /* name */
b34976b6 881 FALSE, /* partial_inplace */
5bd4f169 882 0, /* src_mask */
f5e87a1d 883 ONES (64), /* dst_mask */
b34976b6 884 FALSE), /* pcrel_offset */
5bd4f169
AM		 885
886 /* 64-bit PC relative relocation to the symbol's procedure linkage
887 table. */
888 /* FIXME: R_PPC64_PLTREL64 not supported. */
889 HOWTO (R_PPC64_PLTREL64, /* type */
890 0, /* rightshift */
891 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
892 64, /* bitsize */
b34976b6 893 TRUE, /* pc_relative */
5bd4f169
AM		 894 0, /* bitpos */
895 complain_overflow_dont, /* complain_on_overflow */
805fc799 896 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 897 "R_PPC64_PLTREL64", /* name */
b34976b6 898 FALSE, /* partial_inplace */
5bd4f169 899 0, /* src_mask */
f5e87a1d 900 ONES (64), /* dst_mask */
b34976b6 901 TRUE), /* pcrel_offset */
5bd4f169
AM		 902
903 /* 16 bit TOC-relative relocation. */
904
905 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
906 HOWTO (R_PPC64_TOC16, /* type */
907 0, /* rightshift */
908 1, /* size (0 = byte, 1 = short, 2 = long) */
909 16, /* bitsize */
b34976b6 910 FALSE, /* pc_relative */
5bd4f169
AM		 911 0, /* bitpos */
912 complain_overflow_signed, /* complain_on_overflow */
805fc799 913 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 914 "R_PPC64_TOC16", /* name */
b34976b6 915 FALSE, /* partial_inplace */
5bd4f169
AM		 916 0, /* src_mask */
917 0xffff, /* dst_mask */
b34976b6 918 FALSE), /* pcrel_offset */
5bd4f169
AM		 919
920 /* 16 bit TOC-relative relocation without overflow. */
921
922 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
923 HOWTO (R_PPC64_TOC16_LO, /* type */
924 0, /* rightshift */
925 1, /* size (0 = byte, 1 = short, 2 = long) */
926 16, /* bitsize */
b34976b6 927 FALSE, /* pc_relative */
5bd4f169
AM		 928 0, /* bitpos */
929 complain_overflow_dont, /* complain_on_overflow */
805fc799 930 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 931 "R_PPC64_TOC16_LO", /* name */
b34976b6 932 FALSE, /* partial_inplace */
5bd4f169
AM		 933 0, /* src_mask */
934 0xffff, /* dst_mask */
b34976b6 935 FALSE), /* pcrel_offset */
5bd4f169
AM		 936
937 /* 16 bit TOC-relative relocation, high 16 bits. */
938
939 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
940 HOWTO (R_PPC64_TOC16_HI, /* type */
941 16, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
b34976b6 944 FALSE, /* pc_relative */
5bd4f169
AM		 945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
805fc799 947 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 948 "R_PPC64_TOC16_HI", /* name */
b34976b6 949 FALSE, /* partial_inplace */
5bd4f169
AM		 950 0, /* src_mask */
951 0xffff, /* dst_mask */
b34976b6 952 FALSE), /* pcrel_offset */
5bd4f169
AM		 953
954 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
955 contents of the low 16 bits, treated as a signed number, is
956 negative. */
957
958 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
959 HOWTO (R_PPC64_TOC16_HA, /* type */
960 16, /* rightshift */
961 1, /* size (0 = byte, 1 = short, 2 = long) */
962 16, /* bitsize */
b34976b6 963 FALSE, /* pc_relative */
5bd4f169
AM		 964 0, /* bitpos */
965 complain_overflow_dont, /* complain_on_overflow */
805fc799 966 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 967 "R_PPC64_TOC16_HA", /* name */
b34976b6 968 FALSE, /* partial_inplace */
5bd4f169
AM		 969 0, /* src_mask */
970 0xffff, /* dst_mask */
b34976b6 971 FALSE), /* pcrel_offset */
5bd4f169
AM		 972
973 /* 64-bit relocation; insert value of TOC base (.TOC.). */
974
975 /* R_PPC64_TOC 51 doubleword64 .TOC. */
976 HOWTO (R_PPC64_TOC, /* type */
977 0, /* rightshift */
978 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
979 64, /* bitsize */
b34976b6 980 FALSE, /* pc_relative */
5bd4f169
AM		 981 0, /* bitpos */
982 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 983 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 984 "R_PPC64_TOC", /* name */
b34976b6 985 FALSE, /* partial_inplace */
5bd4f169 986 0, /* src_mask */
f5e87a1d 987 ONES (64), /* dst_mask */
b34976b6 988 FALSE), /* pcrel_offset */
5bd4f169
AM		 989
990 /* Like R_PPC64_GOT16, but also informs the link editor that the
991 value to relocate may (!) refer to a PLT entry which the link
992 editor (a) may replace with the symbol value. If the link editor
993 is unable to fully resolve the symbol, it may (b) create a PLT
994 entry and store the address to the new PLT entry in the GOT.
995 This permits lazy resolution of function symbols at run time.
996 The link editor may also skip all of this and just (c) emit a
997 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
998 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
999 HOWTO (R_PPC64_PLTGOT16, /* type */
1000 0, /* rightshift */
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 16, /* bitsize */
b34976b6 1003 FALSE, /* pc_relative */
5bd4f169
AM		 1004 0, /* bitpos */
1005 complain_overflow_signed, /* complain_on_overflow */
805fc799 1006 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1007 "R_PPC64_PLTGOT16", /* name */
1008 FALSE, /* partial_inplace */
1009 0, /* src_mask */
1010 0xffff, /* dst_mask */
1011 FALSE), /* pcrel_offset */
1012
1013 /* Like R_PPC64_PLTGOT16, but without overflow. */
1014 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1015 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1016 0, /* rightshift */
1017 1, /* size (0 = byte, 1 = short, 2 = long) */
1018 16, /* bitsize */
1019 FALSE, /* pc_relative */
1020 0, /* bitpos */
1021 complain_overflow_dont, /* complain_on_overflow */
1022 ppc64_elf_unhandled_reloc, /* special_function */
1023 "R_PPC64_PLTGOT16_LO", /* name */
1024 FALSE, /* partial_inplace */
1025 0, /* src_mask */
1026 0xffff, /* dst_mask */
1027 FALSE), /* pcrel_offset */
1028
1029 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1030 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1031 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1032 16, /* rightshift */
1033 1, /* size (0 = byte, 1 = short, 2 = long) */
1034 16, /* bitsize */
1035 FALSE, /* pc_relative */
1036 0, /* bitpos */
1037 complain_overflow_dont, /* complain_on_overflow */
1038 ppc64_elf_unhandled_reloc, /* special_function */
1039 "R_PPC64_PLTGOT16_HI", /* name */
1040 FALSE, /* partial_inplace */
1041 0, /* src_mask */
1042 0xffff, /* dst_mask */
1043 FALSE), /* pcrel_offset */
1044
1045 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1046 1 if the contents of the low 16 bits, treated as a signed number,
1047 is negative. */
1048 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1049 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1050 16, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
1053 FALSE, /* pc_relative */
1054 0, /* bitpos */
1055 complain_overflow_dont,/* complain_on_overflow */
1056 ppc64_elf_unhandled_reloc, /* special_function */
1057 "R_PPC64_PLTGOT16_HA", /* name */
1058 FALSE, /* partial_inplace */
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1062
1063 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1064 HOWTO (R_PPC64_ADDR16_DS, /* type */
1065 0, /* rightshift */
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 16, /* bitsize */
1068 FALSE, /* pc_relative */
1069 0, /* bitpos */
1070 complain_overflow_bitfield, /* complain_on_overflow */
1071 bfd_elf_generic_reloc, /* special_function */
1072 "R_PPC64_ADDR16_DS", /* name */
1073 FALSE, /* partial_inplace */
1074 0, /* src_mask */
1075 0xfffc, /* dst_mask */
1076 FALSE), /* pcrel_offset */
1077
1078 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1079 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1080 0, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont,/* complain_on_overflow */
1086 bfd_elf_generic_reloc, /* special_function */
1087 "R_PPC64_ADDR16_LO_DS",/* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xfffc, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1094 HOWTO (R_PPC64_GOT16_DS, /* type */
1095 0, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
1098 FALSE, /* pc_relative */
1099 0, /* bitpos */
1100 complain_overflow_signed, /* complain_on_overflow */
1101 ppc64_elf_unhandled_reloc, /* special_function */
1102 "R_PPC64_GOT16_DS", /* name */
1103 FALSE, /* partial_inplace */
1104 0, /* src_mask */
1105 0xfffc, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1107
1108 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1109 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1110 0, /* rightshift */
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 16, /* bitsize */
1113 FALSE, /* pc_relative */
1114 0, /* bitpos */
1115 complain_overflow_dont, /* complain_on_overflow */
1116 ppc64_elf_unhandled_reloc, /* special_function */
1117 "R_PPC64_GOT16_LO_DS", /* name */
1118 FALSE, /* partial_inplace */
1119 0, /* src_mask */
1120 0xfffc, /* dst_mask */
1121 FALSE), /* pcrel_offset */
1122
1123 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1124 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1125 0, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 16, /* bitsize */
1128 FALSE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont, /* complain_on_overflow */
1131 ppc64_elf_unhandled_reloc, /* special_function */
1132 "R_PPC64_PLT16_LO_DS", /* name */
1133 FALSE, /* partial_inplace */
1134 0, /* src_mask */
1135 0xfffc, /* dst_mask */
1136 FALSE), /* pcrel_offset */
1137
1138 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1139 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1140 0, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1142 16, /* bitsize */
1143 FALSE, /* pc_relative */
1144 0, /* bitpos */
1145 complain_overflow_bitfield, /* complain_on_overflow */
1146 ppc64_elf_sectoff_reloc, /* special_function */
1147 "R_PPC64_SECTOFF_DS", /* name */
1148 FALSE, /* partial_inplace */
1149 0, /* src_mask */
1150 0xfffc, /* dst_mask */
1151 FALSE), /* pcrel_offset */
1152
1153 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1154 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1155 0, /* rightshift */
1156 1, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 ppc64_elf_sectoff_reloc, /* special_function */
1162 "R_PPC64_SECTOFF_LO_DS",/* name */
1163 FALSE, /* partial_inplace */
1164 0, /* src_mask */
1165 0xfffc, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167
1168 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1169 HOWTO (R_PPC64_TOC16_DS, /* type */
1170 0, /* rightshift */
1171 1, /* size (0 = byte, 1 = short, 2 = long) */
1172 16, /* bitsize */
1173 FALSE, /* pc_relative */
1174 0, /* bitpos */
1175 complain_overflow_signed, /* complain_on_overflow */
1176 ppc64_elf_toc_reloc, /* special_function */
1177 "R_PPC64_TOC16_DS", /* name */
1178 FALSE, /* partial_inplace */
1179 0, /* src_mask */
1180 0xfffc, /* dst_mask */
1181 FALSE), /* pcrel_offset */
1182
1183 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1184 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1185 0, /* rightshift */
1186 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 16, /* bitsize */
1188 FALSE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_dont, /* complain_on_overflow */
1191 ppc64_elf_toc_reloc, /* special_function */
1192 "R_PPC64_TOC16_LO_DS", /* name */
1193 FALSE, /* partial_inplace */
1194 0, /* src_mask */
1195 0xfffc, /* dst_mask */
1196 FALSE), /* pcrel_offset */
1197
1198 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1199 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1200 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1201 0, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 16, /* bitsize */
1204 FALSE, /* pc_relative */
1205 0, /* bitpos */
1206 complain_overflow_signed, /* complain_on_overflow */
1207 ppc64_elf_unhandled_reloc, /* special_function */
1208 "R_PPC64_PLTGOT16_DS", /* name */
1209 FALSE, /* partial_inplace */
1210 0, /* src_mask */
1211 0xfffc, /* dst_mask */
1212 FALSE), /* pcrel_offset */
1213
1214 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1215 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1216 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1217 0, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc64_elf_unhandled_reloc, /* special_function */
1224 "R_PPC64_PLTGOT16_LO_DS",/* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xfffc, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* Marker reloc for TLS. */
1231 HOWTO (R_PPC64_TLS,
1232 0, /* rightshift */
1233 2, /* size (0 = byte, 1 = short, 2 = long) */
1234 32, /* bitsize */
1235 FALSE, /* pc_relative */
1236 0, /* bitpos */
1237 complain_overflow_dont, /* complain_on_overflow */
1238 bfd_elf_generic_reloc, /* special_function */
1239 "R_PPC64_TLS", /* name */
1240 FALSE, /* partial_inplace */
1241 0, /* src_mask */
1242 0, /* dst_mask */
1243 FALSE), /* pcrel_offset */
1244
1245 /* Computes the load module index of the load module that contains the
1246 definition of its TLS sym. */
1247 HOWTO (R_PPC64_DTPMOD64,
1248 0, /* rightshift */
1249 4, /* size (0 = byte, 1 = short, 2 = long) */
1250 64, /* bitsize */
1251 FALSE, /* pc_relative */
1252 0, /* bitpos */
1253 complain_overflow_dont, /* complain_on_overflow */
1254 ppc64_elf_unhandled_reloc, /* special_function */
1255 "R_PPC64_DTPMOD64", /* name */
1256 FALSE, /* partial_inplace */
1257 0, /* src_mask */
1258 ONES (64), /* dst_mask */
1259 FALSE), /* pcrel_offset */
1260
1261 /* Computes a dtv-relative displacement, the difference between the value
1262 of sym+add and the base address of the thread-local storage block that
1263 contains the definition of sym, minus 0x8000. */
1264 HOWTO (R_PPC64_DTPREL64,
1265 0, /* rightshift */
1266 4, /* size (0 = byte, 1 = short, 2 = long) */
1267 64, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_DTPREL64", /* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 ONES (64), /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* A 16 bit dtprel reloc. */
1279 HOWTO (R_PPC64_DTPREL16,
1280 0, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_signed, /* complain_on_overflow */
1286 ppc64_elf_unhandled_reloc, /* special_function */
1287 "R_PPC64_DTPREL16", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* Like DTPREL16, but no overflow. */
1294 HOWTO (R_PPC64_DTPREL16_LO,
1295 0, /* rightshift */
1296 1, /* size (0 = byte, 1 = short, 2 = long) */
1297 16, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_dont, /* complain_on_overflow */
1301 ppc64_elf_unhandled_reloc, /* special_function */
1302 "R_PPC64_DTPREL16_LO", /* name */
1303 FALSE, /* partial_inplace */
1304 0, /* src_mask */
1305 0xffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1309 HOWTO (R_PPC64_DTPREL16_HI,
1310 16, /* rightshift */
1311 1, /* size (0 = byte, 1 = short, 2 = long) */
1312 16, /* bitsize */
1313 FALSE, /* pc_relative */
1314 0, /* bitpos */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPREL16_HI", /* name */
1318 FALSE, /* partial_inplace */
1319 0, /* src_mask */
1320 0xffff, /* dst_mask */
1321 FALSE), /* pcrel_offset */
1322
1323 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1324 HOWTO (R_PPC64_DTPREL16_HA,
1325 16, /* rightshift */
1326 1, /* size (0 = byte, 1 = short, 2 = long) */
1327 16, /* bitsize */
1328 FALSE, /* pc_relative */
1329 0, /* bitpos */
1330 complain_overflow_dont, /* complain_on_overflow */
1331 ppc64_elf_unhandled_reloc, /* special_function */
1332 "R_PPC64_DTPREL16_HA", /* name */
1333 FALSE, /* partial_inplace */
1334 0, /* src_mask */
1335 0xffff, /* dst_mask */
1336 FALSE), /* pcrel_offset */
1337
1338 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1339 HOWTO (R_PPC64_DTPREL16_HIGHER,
1340 32, /* rightshift */
1341 1, /* size (0 = byte, 1 = short, 2 = long) */
1342 16, /* bitsize */
1343 FALSE, /* pc_relative */
1344 0, /* bitpos */
1345 complain_overflow_dont, /* complain_on_overflow */
1346 ppc64_elf_unhandled_reloc, /* special_function */
1347 "R_PPC64_DTPREL16_HIGHER", /* name */
1348 FALSE, /* partial_inplace */
1349 0, /* src_mask */
1350 0xffff, /* dst_mask */
1351 FALSE), /* pcrel_offset */
1352
1353 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1354 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1355 32, /* rightshift */
1356 1, /* size (0 = byte, 1 = short, 2 = long) */
1357 16, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL16_HIGHERA", /* name */
1363 FALSE, /* partial_inplace */
1364 0, /* src_mask */
1365 0xffff, /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367
1368 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1369 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1370 48, /* rightshift */
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1372 16, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_dont, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16_HIGHEST", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1384 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1385 48, /* rightshift */
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 16, /* bitsize */
1388 FALSE, /* pc_relative */
1389 0, /* bitpos */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1393 FALSE, /* partial_inplace */
1394 0, /* src_mask */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1397
1398 /* Like DTPREL16, but for insns with a DS field. */
1399 HOWTO (R_PPC64_DTPREL16_DS,
1400 0, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 16, /* bitsize */
1403 FALSE, /* pc_relative */
1404 0, /* bitpos */
1405 complain_overflow_signed, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_DS", /* name */
1408 FALSE, /* partial_inplace */
1409 0, /* src_mask */
1410 0xfffc, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1412
1413 /* Like DTPREL16_DS, but no overflow. */
1414 HOWTO (R_PPC64_DTPREL16_LO_DS,
1415 0, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 16, /* bitsize */
1418 FALSE, /* pc_relative */
1419 0, /* bitpos */
1420 complain_overflow_dont, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_LO_DS", /* name */
1423 FALSE, /* partial_inplace */
1424 0, /* src_mask */
1425 0xfffc, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1427
1428 /* Computes a tp-relative displacement, the difference between the value of
1429 sym+add and the value of the thread pointer (r13). */
1430 HOWTO (R_PPC64_TPREL64,
1431 0, /* rightshift */
1432 4, /* size (0 = byte, 1 = short, 2 = long) */
1433 64, /* bitsize */
1434 FALSE, /* pc_relative */
1435 0, /* bitpos */
1436 complain_overflow_dont, /* complain_on_overflow */
1437 ppc64_elf_unhandled_reloc, /* special_function */
1438 "R_PPC64_TPREL64", /* name */
1439 FALSE, /* partial_inplace */
1440 0, /* src_mask */
1441 ONES (64), /* dst_mask */
1442 FALSE), /* pcrel_offset */
1443
1444 /* A 16 bit tprel reloc. */
1445 HOWTO (R_PPC64_TPREL16,
1446 0, /* rightshift */
1447 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 16, /* bitsize */
1449 FALSE, /* pc_relative */
1450 0, /* bitpos */
1451 complain_overflow_signed, /* complain_on_overflow */
1452 ppc64_elf_unhandled_reloc, /* special_function */
1453 "R_PPC64_TPREL16", /* name */
1454 FALSE, /* partial_inplace */
1455 0, /* src_mask */
1456 0xffff, /* dst_mask */
1457 FALSE), /* pcrel_offset */
1458
1459 /* Like TPREL16, but no overflow. */
1460 HOWTO (R_PPC64_TPREL16_LO,
1461 0, /* rightshift */
1462 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 16, /* bitsize */
1464 FALSE, /* pc_relative */
1465 0, /* bitpos */
1466 complain_overflow_dont, /* complain_on_overflow */
1467 ppc64_elf_unhandled_reloc, /* special_function */
1468 "R_PPC64_TPREL16_LO", /* name */
1469 FALSE, /* partial_inplace */
1470 0, /* src_mask */
1471 0xffff, /* dst_mask */
1472 FALSE), /* pcrel_offset */
1473
1474 /* Like TPREL16_LO, but next higher group of 16 bits. */
1475 HOWTO (R_PPC64_TPREL16_HI,
1476 16, /* rightshift */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 16, /* bitsize */
1479 FALSE, /* pc_relative */
1480 0, /* bitpos */
1481 complain_overflow_dont, /* complain_on_overflow */
1482 ppc64_elf_unhandled_reloc, /* special_function */
1483 "R_PPC64_TPREL16_HI", /* name */
1484 FALSE, /* partial_inplace */
1485 0, /* src_mask */
1486 0xffff, /* dst_mask */
1487 FALSE), /* pcrel_offset */
1488
1489 /* Like TPREL16_HI, but adjust for low 16 bits. */
1490 HOWTO (R_PPC64_TPREL16_HA,
1491 16, /* rightshift */
1492 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 16, /* bitsize */
1494 FALSE, /* pc_relative */
1495 0, /* bitpos */
1496 complain_overflow_dont, /* complain_on_overflow */
1497 ppc64_elf_unhandled_reloc, /* special_function */
1498 "R_PPC64_TPREL16_HA", /* name */
1499 FALSE, /* partial_inplace */
1500 0, /* src_mask */
1501 0xffff, /* dst_mask */
1502 FALSE), /* pcrel_offset */
1503
1504 /* Like TPREL16_HI, but next higher group of 16 bits. */
1505 HOWTO (R_PPC64_TPREL16_HIGHER,
1506 32, /* rightshift */
1507 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 16, /* bitsize */
1509 FALSE, /* pc_relative */
1510 0, /* bitpos */
1511 complain_overflow_dont, /* complain_on_overflow */
1512 ppc64_elf_unhandled_reloc, /* special_function */
1513 "R_PPC64_TPREL16_HIGHER", /* name */
1514 FALSE, /* partial_inplace */
1515 0, /* src_mask */
1516 0xffff, /* dst_mask */
1517 FALSE), /* pcrel_offset */
1518
1519 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1520 HOWTO (R_PPC64_TPREL16_HIGHERA,
1521 32, /* rightshift */
1522 1, /* size (0 = byte, 1 = short, 2 = long) */
1523 16, /* bitsize */
1524 FALSE, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL16_HIGHERA", /* name */
1529 FALSE, /* partial_inplace */
1530 0, /* src_mask */
1531 0xffff, /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533
1534 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1535 HOWTO (R_PPC64_TPREL16_HIGHEST,
1536 48, /* rightshift */
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1538 16, /* bitsize */
1539 FALSE, /* pc_relative */
1540 0, /* bitpos */
1541 complain_overflow_dont, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16_HIGHEST", /* name */
1544 FALSE, /* partial_inplace */
1545 0, /* src_mask */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1548
1549 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1550 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1551 48, /* rightshift */
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1553 16, /* bitsize */
1554 FALSE, /* pc_relative */
1555 0, /* bitpos */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_HIGHESTA", /* name */
1559 FALSE, /* partial_inplace */
1560 0, /* src_mask */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1563
1564 /* Like TPREL16, but for insns with a DS field. */
1565 HOWTO (R_PPC64_TPREL16_DS,
1566 0, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1568 16, /* bitsize */
1569 FALSE, /* pc_relative */
1570 0, /* bitpos */
1571 complain_overflow_signed, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_DS", /* name */
1574 FALSE, /* partial_inplace */
1575 0, /* src_mask */
1576 0xfffc, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1578
1579 /* Like TPREL16_DS, but no overflow. */
1580 HOWTO (R_PPC64_TPREL16_LO_DS,
1581 0, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1583 16, /* bitsize */
1584 FALSE, /* pc_relative */
1585 0, /* bitpos */
1586 complain_overflow_dont, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_LO_DS", /* name */
1589 FALSE, /* partial_inplace */
1590 0, /* src_mask */
1591 0xfffc, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1593
1594 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1595 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1596 to the first entry relative to the TOC base (r2). */
1597 HOWTO (R_PPC64_GOT_TLSGD16,
1598 0, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1600 16, /* bitsize */
1601 FALSE, /* pc_relative */
1602 0, /* bitpos */
1603 complain_overflow_signed, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1606 FALSE, /* partial_inplace */
5bd4f169
AM		 1607 0, /* src_mask */
1608 0xffff, /* dst_mask */
b34976b6 1609 FALSE), /* pcrel_offset */
5bd4f169 1610
411e1bfb
AM		 1611 /* Like GOT_TLSGD16, but no overflow. */
1612 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1613 0, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1615 16, /* bitsize */
b34976b6 1616 FALSE, /* pc_relative */
5bd4f169
AM		 1617 0, /* bitpos */
1618 complain_overflow_dont, /* complain_on_overflow */
805fc799 1619 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1620 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1621 FALSE, /* partial_inplace */
5bd4f169
AM		 1622 0, /* src_mask */
1623 0xffff, /* dst_mask */
b34976b6 1624 FALSE), /* pcrel_offset */
5bd4f169 1625
411e1bfb
AM		 1626 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1627 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1628 16, /* rightshift */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1630 16, /* bitsize */
b34976b6 1631 FALSE, /* pc_relative */
5bd4f169
AM		 1632 0, /* bitpos */
1633 complain_overflow_dont, /* complain_on_overflow */
805fc799 1634 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1635 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1636 FALSE, /* partial_inplace */
5bd4f169
AM		 1637 0, /* src_mask */
1638 0xffff, /* dst_mask */
b34976b6 1639 FALSE), /* pcrel_offset */
5bd4f169 1640
411e1bfb
AM		 1641 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1642 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1643 16, /* rightshift */
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1645 16, /* bitsize */
b34976b6 1646 FALSE, /* pc_relative */
5bd4f169 1647 0, /* bitpos */
411e1bfb 1648 complain_overflow_dont, /* complain_on_overflow */
805fc799 1649 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1650 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1651 FALSE, /* partial_inplace */
5bd4f169
AM		 1652 0, /* src_mask */
1653 0xffff, /* dst_mask */
b34976b6 1654 FALSE), /* pcrel_offset */
5bd4f169 1655
411e1bfb
AM		 1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and zero, and computes the offset to the
1658 first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1660 0, /* rightshift */
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1662 16, /* bitsize */
b34976b6 1663 FALSE, /* pc_relative */
5bd4f169 1664 0, /* bitpos */
411e1bfb
AM		 1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1668 FALSE, /* partial_inplace */
d006db6c 1669 0, /* src_mask */
411e1bfb 1670 0xffff, /* dst_mask */
b34976b6 1671 FALSE), /* pcrel_offset */
5bd4f169 1672
411e1bfb
AM		 1673 /* Like GOT_TLSLD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
b34976b6 1678 FALSE, /* pc_relative */
5bd4f169 1679 0, /* bitpos */
411e1bfb
AM		 1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1683 FALSE, /* partial_inplace */
d006db6c 1684 0, /* src_mask */
411e1bfb 1685 0xffff, /* dst_mask */
b34976b6 1686 FALSE), /* pcrel_offset */
5bd4f169 1687
411e1bfb
AM		 1688 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1690 16, /* rightshift */
5bd4f169
AM		 1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
b34976b6 1693 FALSE, /* pc_relative */
5bd4f169 1694 0, /* bitpos */
411e1bfb 1695 complain_overflow_dont, /* complain_on_overflow */
805fc799 1696 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1697 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1698 FALSE, /* partial_inplace */
d006db6c 1699 0, /* src_mask */
411e1bfb 1700 0xffff, /* dst_mask */
b34976b6 1701 FALSE), /* pcrel_offset */
5bd4f169 1702
411e1bfb
AM		 1703 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1705 16, /* rightshift */
5bd4f169
AM		 1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
b34976b6 1708 FALSE, /* pc_relative */
5bd4f169
AM		 1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
805fc799 1711 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1712 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1713 FALSE, /* partial_inplace */
d006db6c 1714 0, /* src_mask */
411e1bfb 1715 0xffff, /* dst_mask */
b34976b6 1716 FALSE), /* pcrel_offset */
5bd4f169 1717
411e1bfb
AM		 1718 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1719 the offset to the entry relative to the TOC base (r2). */
1720 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1721 0, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
b34976b6 1724 FALSE, /* pc_relative */
5bd4f169 1725 0, /* bitpos */
411e1bfb 1726 complain_overflow_signed, /* complain_on_overflow */
805fc799 1727 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1728 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1729 FALSE, /* partial_inplace */
d006db6c 1730 0, /* src_mask */
5bd4f169 1731 0xfffc, /* dst_mask */
b34976b6 1732 FALSE), /* pcrel_offset */
5bd4f169 1733
411e1bfb
AM		 1734 /* Like GOT_DTPREL16_DS, but no overflow. */
1735 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1736 0, /* rightshift */
c061c2d8
AM		 1737 1, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
b34976b6 1739 FALSE, /* pc_relative */
5bd4f169 1740 0, /* bitpos */
411e1bfb
AM		 1741 complain_overflow_dont, /* complain_on_overflow */
1742 ppc64_elf_unhandled_reloc, /* special_function */
1743 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1744 FALSE, /* partial_inplace */
d006db6c 1745 0, /* src_mask */
c061c2d8 1746 0xfffc, /* dst_mask */
b34976b6 1747 FALSE), /* pcrel_offset */
5bd4f169 1748
411e1bfb
AM		 1749 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1750 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1751 16, /* rightshift */
5bd4f169
AM		 1752 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 16, /* bitsize */
b34976b6 1754 FALSE, /* pc_relative */
5bd4f169
AM		 1755 0, /* bitpos */
1756 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1757 ppc64_elf_unhandled_reloc, /* special_function */
1758 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1759 FALSE, /* partial_inplace */
d006db6c 1760 0, /* src_mask */
411e1bfb 1761 0xffff, /* dst_mask */
b34976b6 1762 FALSE), /* pcrel_offset */
5bd4f169 1763
411e1bfb
AM		 1764 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1765 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1766 16, /* rightshift */
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 16, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 ppc64_elf_unhandled_reloc, /* special_function */
1773 "R_PPC64_GOT_DTPREL16_HA", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0xffff, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1780 offset to the entry relative to the TOC base (r2). */
1781 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1782 0, /* rightshift */
1783 1, /* size (0 = byte, 1 = short, 2 = long) */
1784 16, /* bitsize */
b34976b6 1785 FALSE, /* pc_relative */
5bd4f169
AM		 1786 0, /* bitpos */
1787 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1788 ppc64_elf_unhandled_reloc, /* special_function */
1789 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1790 FALSE, /* partial_inplace */
d006db6c 1791 0, /* src_mask */
ad8e1ba5 1792 0xfffc, /* dst_mask */
b34976b6 1793 FALSE), /* pcrel_offset */
5bd4f169 1794
411e1bfb
AM		 1795 /* Like GOT_TPREL16_DS, but no overflow. */
1796 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1797 0, /* rightshift */
1798 1, /* size (0 = byte, 1 = short, 2 = long) */
1799 16, /* bitsize */
b34976b6 1800 FALSE, /* pc_relative */
5bd4f169
AM		 1801 0, /* bitpos */
1802 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1803 ppc64_elf_unhandled_reloc, /* special_function */
1804 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1805 FALSE, /* partial_inplace */
d006db6c 1806 0, /* src_mask */
ad8e1ba5 1807 0xfffc, /* dst_mask */
b34976b6 1808 FALSE), /* pcrel_offset */
5bd4f169 1809
411e1bfb
AM		 1810 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1811 HOWTO (R_PPC64_GOT_TPREL16_HI,
1812 16, /* rightshift */
5bd4f169
AM		 1813 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 16, /* bitsize */
b34976b6 1815 FALSE, /* pc_relative */
5bd4f169 1816 0, /* bitpos */
411e1bfb 1817 complain_overflow_dont, /* complain_on_overflow */
805fc799 1818 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1819 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1820 FALSE, /* partial_inplace */
d006db6c 1821 0, /* src_mask */
411e1bfb 1822 0xffff, /* dst_mask */
b34976b6 1823 FALSE), /* pcrel_offset */
5bd4f169 1824
411e1bfb
AM		 1825 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1826 HOWTO (R_PPC64_GOT_TPREL16_HA,
1827 16, /* rightshift */
5bd4f169
AM		 1828 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 16, /* bitsize */
b34976b6 1830 FALSE, /* pc_relative */
5bd4f169
AM		 1831 0, /* bitpos */
1832 complain_overflow_dont, /* complain_on_overflow */
805fc799 1833 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1834 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1835 FALSE, /* partial_inplace */
d006db6c 1836 0, /* src_mask */
411e1bfb 1837 0xffff, /* dst_mask */
b34976b6 1838 FALSE), /* pcrel_offset */
5bd4f169
AM		 1839
1840 /* GNU extension to record C++ vtable hierarchy. */
1841 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1842 0, /* rightshift */
1843 0, /* size (0 = byte, 1 = short, 2 = long) */
1844 0, /* bitsize */
b34976b6 1845 FALSE, /* pc_relative */
5bd4f169
AM		 1846 0, /* bitpos */
1847 complain_overflow_dont, /* complain_on_overflow */
1848 NULL, /* special_function */
1849 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1850 FALSE, /* partial_inplace */
5bd4f169
AM		 1851 0, /* src_mask */
1852 0, /* dst_mask */
b34976b6 1853 FALSE), /* pcrel_offset */
5bd4f169
AM		 1854
1855 /* GNU extension to record C++ vtable member usage. */
1856 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1857 0, /* rightshift */
1858 0, /* size (0 = byte, 1 = short, 2 = long) */
1859 0, /* bitsize */
b34976b6 1860 FALSE, /* pc_relative */
5bd4f169
AM		 1861 0, /* bitpos */
1862 complain_overflow_dont, /* complain_on_overflow */
1863 NULL, /* special_function */
1864 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1865 FALSE, /* partial_inplace */
5bd4f169
AM		 1866 0, /* src_mask */
1867 0, /* dst_mask */
b34976b6 1868 FALSE), /* pcrel_offset */
5bd4f169
AM		 1869};
1870
1871\f
1872/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1873 be done. */
1874
1875static void
4ce794b7 1876ppc_howto_init (void)
5bd4f169
AM		 1877{
1878 unsigned int i, type;
1879
1880 for (i = 0;
1881 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1882 i++)
1883 {
1884 type = ppc64_elf_howto_raw[i].type;
1885 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1886 / sizeof (ppc64_elf_howto_table[0])));
1887 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1888 }
1889}
1890
1891static reloc_howto_type *
4ce794b7
AM		 1892ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1893 bfd_reloc_code_real_type code)
5bd4f169 1894{
411e1bfb 1895 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1896
1897 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1898 /* Initialize howto table if needed. */
1899 ppc_howto_init ();
1900
4ce794b7 1901 switch (code)
5bd4f169
AM		 1902 {
1903 default:
4ce794b7 1904 return NULL;
5bd4f169 1905
411e1bfb
AM		 1906 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1907 break;
1908 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1909 break;
1910 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1911 break;
1912 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1913 break;
1914 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1915 break;
1916 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1917 break;
1918 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1919 break;
411e1bfb 1920 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1921 break;
411e1bfb 1922 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1923 break;
411e1bfb 1924 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1925 break;
411e1bfb 1926 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2031 break;
411e1bfb 2032 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2033 break;
411e1bfb 2034 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2035 break;
411e1bfb 2036 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2037 break;
411e1bfb
AM		 2038 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2039 break;
2040 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2041 break;
2042 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2043 break;
2044 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2045 break;
2046 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2047 break;
2048 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2049 break;
2050 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2051 break;
2052 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2053 break;
2054 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2065 break;
2066 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2067 break;
2068 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2069 break;
2070 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2071 break;
2072 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2073 break;
2074 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2075 break;
2076 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2077 break;
2078 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2079 break;
2080 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2081 break;
2082 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2083 break;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2085 break;
2086 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2087 break;
2088 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2089 break;
2090 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2091 break;
2092 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2093 break;
2094 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2095 break;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2097 break;
2098 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2099 break;
2100 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2101 break;
2102 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2103 break;
2104 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2105 break;
2106 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2107 break;
2108 }
2109
4ce794b7 2110 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2111};
2112
2113/* Set the howto pointer for a PowerPC ELF reloc. */
2114
2115static void
4ce794b7
AM		 2116ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2117 Elf_Internal_Rela *dst)
5bd4f169 2118{
65f38f15
AM		 2119 unsigned int type;
2120
ef60b7ff 2121 /* Initialize howto table if needed. */
5bd4f169 2122 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2123 ppc_howto_init ();
2124
65f38f15 2125 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2126 if (type >= (sizeof (ppc64_elf_howto_table)
2127 / sizeof (ppc64_elf_howto_table[0])))
2128 {
2129 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2130 abfd, (int) type);
2131 type = R_PPC64_NONE;
d0fb9a8d 2132 }
65f38f15 2133 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2134}
2135
04c9666a 2136/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2137
2138static bfd_reloc_status_type
4ce794b7
AM		 2139ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2140 void *data, asection *input_section,
2141 bfd *output_bfd, char **error_message)
5bd4f169 2142{
805fc799
AM		 2143 /* If this is a relocatable link (output_bfd test tells us), just
2144 call the generic function. Any adjustment will be done at final
2145 link time. */
2146 if (output_bfd != NULL)
cedb70c5 2147 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2148 input_section, output_bfd, error_message);
2149
2150 /* Adjust the addend for sign extension of the low 16 bits.
2151 We won't actually be using the low 16 bits, so trashing them
2152 doesn't matter. */
2153 reloc_entry->addend += 0x8000;
2154 return bfd_reloc_continue;
2155}
5bd4f169 2156
2441e016
AM		 2157static bfd_reloc_status_type
2158ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2159 void *data, asection *input_section,
2160 bfd *output_bfd, char **error_message)
2161{
2162 if (output_bfd != NULL)
2163 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2164 input_section, output_bfd, error_message);
2165
699733f6
AM		 2166 if (strcmp (symbol->section->name, ".opd") == 0
2167 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2168 {
2169 bfd_vma dest = opd_entry_value (symbol->section,
2170 symbol->value + reloc_entry->addend,
2171 NULL, NULL);
2172 if (dest != (bfd_vma) -1)
2173 reloc_entry->addend = dest - (symbol->value
2174 + symbol->section->output_section->vma
2175 + symbol->section->output_offset);
2176 }
2177 return bfd_reloc_continue;
2178}
2179
805fc799 2180static bfd_reloc_status_type
4ce794b7
AM		 2181ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2182 void *data, asection *input_section,
2183 bfd *output_bfd, char **error_message)
805fc799
AM		 2184{
2185 long insn;
04c9666a 2186 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2187 bfd_size_type octets;
2188 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2189 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2190
2191 /* If this is a relocatable link (output_bfd test tells us), just
2192 call the generic function. Any adjustment will be done at final
2193 link time. */
5bd4f169 2194 if (output_bfd != NULL)
cedb70c5 2195 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2196 input_section, output_bfd, error_message);
2197
2198 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2199 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2200 insn &= ~(0x01 << 21);
4ce794b7 2201 r_type = reloc_entry->howto->type;
805fc799
AM		 2202 if (r_type == R_PPC64_ADDR14_BRTAKEN
2203 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2204 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2205
2206 if (is_power4)
5bd4f169 2207 {
805fc799
AM		 2208 /* Set 'a' bit. This is 0b00010 in BO field for branch
2209 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2210 for branch on CTR insns (BO == 1a00t or 1a01t). */
2211 if ((insn & (0x14 << 21)) == (0x04 << 21))
2212 insn |= 0x02 << 21;
2213 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2214 insn |= 0x08 << 21;
2215 else
2441e016 2216 goto out;
5bd4f169 2217 }
805fc799
AM		 2218 else
2219 {
2220 bfd_vma target = 0;
2221 bfd_vma from;
5bd4f169 2222
805fc799
AM		 2223 if (!bfd_is_com_section (symbol->section))
2224 target = symbol->value;
2225 target += symbol->section->output_section->vma;
2226 target += symbol->section->output_offset;
2227 target += reloc_entry->addend;
5bd4f169 2228
805fc799
AM		 2229 from = (reloc_entry->address
2230 + input_section->output_offset
2231 + input_section->output_section->vma);
5bd4f169 2232
805fc799
AM		 2233 /* Invert 'y' bit if not the default. */
2234 if ((bfd_signed_vma) (target - from) < 0)
2235 insn ^= 0x01 << 21;
2236 }
4ce794b7 2237 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2238 out:
2239 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2240 input_section, output_bfd, error_message);
805fc799 2241}
5bd4f169 2242
805fc799 2243static bfd_reloc_status_type
4ce794b7
AM		 2244ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2245 void *data, asection *input_section,
2246 bfd *output_bfd, char **error_message)
805fc799
AM		 2247{
2248 /* If this is a relocatable link (output_bfd test tells us), just
2249 call the generic function. Any adjustment will be done at final
2250 link time. */
2251 if (output_bfd != NULL)
cedb70c5 2252 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2253 input_section, output_bfd, error_message);
5bd4f169 2254
805fc799
AM		 2255 /* Subtract the symbol section base address. */
2256 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2257 return bfd_reloc_continue;
2258}
2259
805fc799 2260static bfd_reloc_status_type
4ce794b7
AM		 2261ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2262 void *data, asection *input_section,
2263 bfd *output_bfd, char **error_message)
805fc799
AM		 2264{
2265 /* If this is a relocatable link (output_bfd test tells us), just
2266 call the generic function. Any adjustment will be done at final
2267 link time. */
2268 if (output_bfd != NULL)
cedb70c5 2269 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2270 input_section, output_bfd, error_message);
2271
2272 /* Subtract the symbol section base address. */
2273 reloc_entry->addend -= symbol->section->output_section->vma;
2274
2275 /* Adjust the addend for sign extension of the low 16 bits. */
2276 reloc_entry->addend += 0x8000;
2277 return bfd_reloc_continue;
2278}
2279
2280static bfd_reloc_status_type
4ce794b7
AM		 2281ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2282 void *data, asection *input_section,
2283 bfd *output_bfd, char **error_message)
805fc799
AM		 2284{
2285 bfd_vma TOCstart;
2286
2287 /* If this is a relocatable link (output_bfd test tells us), just
2288 call the generic function. Any adjustment will be done at final
2289 link time. */
2290 if (output_bfd != NULL)
cedb70c5 2291 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2292 input_section, output_bfd, error_message);
2293
2294 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2295 if (TOCstart == 0)
2296 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2297
2298 /* Subtract the TOC base address. */
2299 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2300 return bfd_reloc_continue;
2301}
2302
2303static bfd_reloc_status_type
4ce794b7
AM		 2304ppc64_elf_toc_ha_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
2324 /* Adjust the addend for sign extension of the low 16 bits. */
2325 reloc_entry->addend += 0x8000;
2326 return bfd_reloc_continue;
2327}
2328
2329static bfd_reloc_status_type
4ce794b7
AM		 2330ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2331 void *data, asection *input_section,
2332 bfd *output_bfd, char **error_message)
805fc799
AM		 2333{
2334 bfd_vma TOCstart;
2335 bfd_size_type octets;
2336
2337 /* If this is a relocatable link (output_bfd test tells us), just
2338 call the generic function. Any adjustment will be done at final
2339 link time. */
2340 if (output_bfd != NULL)
cedb70c5 2341 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2342 input_section, output_bfd, error_message);
2343
2344 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2345 if (TOCstart == 0)
2346 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2347
2348 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2349 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2350 return bfd_reloc_ok;
2351}
2352
2353static bfd_reloc_status_type
4ce794b7
AM		 2354ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2355 void *data, asection *input_section,
2356 bfd *output_bfd, char **error_message)
805fc799
AM		 2357{
2358 /* If this is a relocatable link (output_bfd test tells us), just
2359 call the generic function. Any adjustment will be done at final
2360 link time. */
2361 if (output_bfd != NULL)
cedb70c5 2362 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2363 input_section, output_bfd, error_message);
2364
2365 if (error_message != NULL)
2366 {
2367 static char buf[60];
2368 sprintf (buf, "generic linker can't handle %s",
2369 reloc_entry->howto->name);
2370 *error_message = buf;
2371 }
2372 return bfd_reloc_dangerous;
2373}
2374
e717da7e
AM		 2375struct ppc64_elf_obj_tdata
2376{
2377 struct elf_obj_tdata elf;
2378
2379 /* Shortcuts to dynamic linker sections. */
2380 asection *got;
2381 asection *relgot;
2382
b3fac117
AM		 2383 /* Used during garbage collection. We attach global symbols defined
2384 on removed .opd entries to this section so that the sym is removed. */
2385 asection *deleted_section;
81688140 2386
e717da7e
AM		 2387 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2388 sections means we potentially need one of these for each input bfd. */
2389 union {
2390 bfd_signed_vma refcount;
2391 bfd_vma offset;
2392 } tlsld_got;
8860955f
AM		 2393
2394 /* A copy of relocs before they are modified for --emit-relocs. */
2395 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2396};
2397
2398#define ppc64_elf_tdata(bfd) \
2399 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2400
2401#define ppc64_tlsld_got(bfd) \
2402 (&ppc64_elf_tdata (bfd)->tlsld_got)
2403
2404/* Override the generic function because we store some extras. */
2405
2406static bfd_boolean
2407ppc64_elf_mkobject (bfd *abfd)
2408{
e717da7e 2409 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 2410 {
2411 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2412 abfd->tdata.any = bfd_zalloc (abfd, amt);
2413 if (abfd->tdata.any == NULL)
2414 return FALSE;
2415 }
2416 return bfd_elf_mkobject (abfd);
e717da7e
AM		 2417}
2418
ee75fd95
AM		 2419/* Return 1 if target is one of ours. */
2420
7b53ace3 2421static bfd_boolean
ee75fd95 2422is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2423{
2424 extern const bfd_target bfd_elf64_powerpc_vec;
2425 extern const bfd_target bfd_elf64_powerpcle_vec;
2426
2427 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2428}
2429
feee612b
AM		 2430/* Fix bad default arch selected for a 64 bit input bfd when the
2431 default is 32 bit. */
2432
b34976b6 2433static bfd_boolean
4ce794b7 2434ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2435{
2436 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2437 {
2438 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2439
2440 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2441 {
2442 /* Relies on arch after 32 bit default being 64 bit default. */
2443 abfd->arch_info = abfd->arch_info->next;
2444 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2445 }
2446 }
b34976b6 2447 return TRUE;
feee612b
AM		 2448}
2449
d37c89e5
AM		 2450/* Support for core dump NOTE sections. */
2451
2452static bfd_boolean
2453ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2454{
eea6121a 2455 size_t offset, size;
d37c89e5
AM		 2456
2457 if (note->descsz != 504)
2458 return FALSE;
2459
2460 /* pr_cursig */
2461 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2462
2463 /* pr_pid */
2464 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2465
2466 /* pr_reg */
2467 offset = 112;
eea6121a 2468 size = 384;
d37c89e5
AM		 2469
2470 /* Make a ".reg/999" section. */
2471 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2472 size, note->descpos + offset);
d37c89e5
AM		 2473}
2474
2475static bfd_boolean
2476ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2477{
2478 if (note->descsz != 136)
2479 return FALSE;
2480
2481 elf_tdata (abfd)->core_program
2482 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2483 elf_tdata (abfd)->core_command
2484 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2485
2486 return TRUE;
2487}
2488
183e98be
AM		 2489static char *
2490ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2491 ...)
2492{
2493 switch (note_type)
2494 {
2495 default:
2496 return NULL;
2497
2498 case NT_PRPSINFO:
2499 {
2500 char data[136];
2501 va_list ap;
2502
2503 va_start (ap, note_type);
2504 memset (data, 0, 40);
2505 strncpy (data + 40, va_arg (ap, const char *), 16);
2506 strncpy (data + 56, va_arg (ap, const char *), 80);
2507 va_end (ap);
2508 return elfcore_write_note (abfd, buf, bufsiz,
2509 "CORE", note_type, data, sizeof (data));
2510 }
2511
2512 case NT_PRSTATUS:
2513 {
2514 char data[504];
2515 va_list ap;
2516 long pid;
2517 int cursig;
2518 const void *greg;
2519
2520 va_start (ap, note_type);
2521 memset (data, 0, 112);
2522 pid = va_arg (ap, long);
2523 bfd_put_32 (abfd, pid, data + 32);
2524 cursig = va_arg (ap, int);
2525 bfd_put_16 (abfd, cursig, data + 12);
2526 greg = va_arg (ap, const void *);
2527 memcpy (data + 112, greg, 384);
2528 memset (data + 496, 0, 8);
2529 va_end (ap);
2530 return elfcore_write_note (abfd, buf, bufsiz,
2531 "CORE", note_type, data, sizeof (data));
2532 }
2533 }
2534}
2535
5bd4f169
AM		 2536/* Merge backend specific data from an object file to the output
2537 object file when linking. */
2f6d9989 2538
b34976b6 2539static bfd_boolean
4ce794b7 2540ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2541{
5bd4f169
AM		 2542 /* Check if we have the same endianess. */
2543 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2544 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2545 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2546 {
2547 const char *msg;
2548
2549 if (bfd_big_endian (ibfd))
d003868e 2550 msg = _("%B: compiled for a big endian system "
4ce794b7 2551 "and target is little endian");
5bd4f169 2552 else
d003868e 2553 msg = _("%B: compiled for a little endian system "
4ce794b7 2554 "and target is big endian");
5bd4f169 2555
d003868e 2556 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2557
2558 bfd_set_error (bfd_error_wrong_format);
b34976b6 2559 return FALSE;
5bd4f169
AM		 2560 }
2561
b34976b6 2562 return TRUE;
5bd4f169 2563}
f0abc2a1 2564
5d35169e
AM		 2565/* Add extra PPC sections. */
2566
b35d266b 2567static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2568{
0112cd26
NC		 2569 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2570 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2571 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2572 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2573 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2574 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2575 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2576};
2577
7c8fe5c4
AM		 2578enum _ppc64_sec_type {
2579 sec_normal = 0,
2580 sec_opd = 1,
2581 sec_toc = 2
2582};
2583
f0abc2a1
AM		 2584struct _ppc64_elf_section_data
2585{
2586 struct bfd_elf_section_data elf;
411e1bfb
AM		 2587
2588 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2589 union
2590 {
411e1bfb 2591 /* Points to the function code section for local opd entries. */
7c8fe5c4 2592 asection **opd_func_sec;
411e1bfb 2593 /* After editing .opd, adjust references to opd local syms. */
7c8fe5c4
AM		 2594 long *opd_adjust;
2595
2596 /* An array for toc sections, indexed by offset/8.
2597 Specifies the relocation symbol index used at a given toc offset. */
2598 unsigned *t_symndx;
2599 } u;
2600
2601 enum _ppc64_sec_type sec_type:2;
411e1bfb 2602
7c8fe5c4
AM		 2603 /* Flag set when small branches are detected. Used to
2604 select suitable defaults for the stub group size. */
2605 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2606};
2607
2608#define ppc64_elf_section_data(sec) \
411e1bfb 2609 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2610
2611static bfd_boolean
4ce794b7 2612ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2613{
f592407e
AM		 2614 if (!sec->used_by_bfd)
2615 {
2616 struct _ppc64_elf_section_data *sdata;
2617 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2618
f592407e
AM		 2619 sdata = bfd_zalloc (abfd, amt);
2620 if (sdata == NULL)
2621 return FALSE;
2622 sec->used_by_bfd = sdata;
2623 }
f0abc2a1
AM		 2624
2625 return _bfd_elf_new_section_hook (abfd, sec);
2626}
4025353c
AM		 2627
2628static void *
2629get_opd_info (asection * sec)
2630{
2631 if (sec != NULL
2632 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4
AM		 2633 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2634 return ppc64_elf_section_data (sec)->u.opd_adjust;
4025353c
AM		 2635 return NULL;
2636}
90e3cdf2
JJ		 2637\f
2638/* Parameters for the qsort hook. */
2639static asection *synthetic_opd;
2640static bfd_boolean synthetic_relocatable;
2641
699733f6 2642/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2643
2644static int
2645compare_symbols (const void *ap, const void *bp)
2646{
2647 const asymbol *a = * (const asymbol **) ap;
2648 const asymbol *b = * (const asymbol **) bp;
2649
699733f6
AM		 2650 /* Section symbols first. */
2651 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2652 return -1;
699733f6 2653 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2654 return 1;
2655
699733f6 2656 /* then .opd symbols. */
90e3cdf2
JJ		 2657 if (a->section == synthetic_opd && b->section != synthetic_opd)
2658 return -1;
2659 if (a->section != synthetic_opd && b->section == synthetic_opd)
2660 return 1;
2661
699733f6 2662 /* then other code symbols. */
90e3cdf2
JJ		 2663 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2664 == (SEC_CODE | SEC_ALLOC)
2665 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2666 != (SEC_CODE | SEC_ALLOC))
2667 return -1;
2668
2669 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2670 != (SEC_CODE | SEC_ALLOC)
2671 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2672 == (SEC_CODE | SEC_ALLOC))
2673 return 1;
2674
2675 if (synthetic_relocatable)
2676 {
2677 if (a->section->id < b->section->id)
2678 return -1;
2679
2680 if (a->section->id > b->section->id)
2681 return 1;
2682 }
2683
2684 if (a->value + a->section->vma < b->value + b->section->vma)
2685 return -1;
2686
2687 if (a->value + a->section->vma > b->value + b->section->vma)
2688 return 1;
2689
4d35a0aa
AM		 2690 /* For syms with the same value, prefer strong dynamic global function
2691 syms over other syms. */
2692 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2693 return -1;
2694
2695 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2696 return 1;
2697
2698 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2699 return -1;
2700
2701 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2702 return 1;
2703
2704 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2705 return -1;
2706
2707 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2708 return 1;
2709
2710 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2711 return -1;
2712
2713 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2714 return 1;
2715
90e3cdf2
JJ		 2716 return 0;
2717}
2718
699733f6 2719/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2720
699733f6
AM		 2721static asymbol *
2722sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2723{
699733f6 2724 long mid;
90e3cdf2 2725
699733f6
AM		 2726 if (id == -1)
2727 {
2728 while (lo < hi)
2729 {
2730 mid = (lo + hi) >> 1;
2731 if (syms[mid]->value + syms[mid]->section->vma < value)
2732 lo = mid + 1;
2733 else if (syms[mid]->value + syms[mid]->section->vma > value)
2734 hi = mid;
2735 else
2736 return syms[mid];
2737 }
2738 }
2739 else
2740 {
2741 while (lo < hi)
2742 {
2743 mid = (lo + hi) >> 1;
2744 if (syms[mid]->section->id < id)
2745 lo = mid + 1;
2746 else if (syms[mid]->section->id > id)
2747 hi = mid;
2748 else if (syms[mid]->value < value)
2749 lo = mid + 1;
2750 else if (syms[mid]->value > value)
2751 hi = mid;
2752 else
2753 return syms[mid];
2754 }
2755 }
2756 return NULL;
90e3cdf2
JJ		 2757}
2758
699733f6
AM		 2759/* Create synthetic symbols, effectively restoring "dot-symbol" function
2760 entry syms. */
90e3cdf2
JJ		 2761
2762static long
a7535cf3
AM		 2763ppc64_elf_get_synthetic_symtab (bfd *abfd,
2764 long static_count, asymbol **static_syms,
2765 long dyn_count, asymbol **dyn_syms,
c9727e01 2766 asymbol **ret)
90e3cdf2
JJ		 2767{
2768 asymbol *s;
699733f6
AM		 2769 long i;
2770 long count;
90e3cdf2 2771 char *names;
a7535cf3 2772 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2773 asection *opd;
90e3cdf2 2774 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2775 asymbol **syms;
90e3cdf2
JJ		 2776
2777 *ret = NULL;
2778
2779 opd = bfd_get_section_by_name (abfd, ".opd");
2780 if (opd == NULL)
2781 return 0;
2782
a7535cf3 2783 symcount = static_count;
c9727e01 2784 if (!relocatable)
a7535cf3 2785 symcount += dyn_count;
90e3cdf2 2786 if (symcount == 0)
c9727e01 2787 return 0;
90e3cdf2 2788
a7535cf3
AM		 2789 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2790 if (syms == NULL)
7356fed5 2791 return -1;
a7535cf3
AM		 2792
2793 if (!relocatable && static_count != 0 && dyn_count != 0)
2794 {
2795 /* Use both symbol tables. */
2796 memcpy (syms, static_syms, static_count * sizeof (*syms));
2797 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2798 }
2799 else if (!relocatable && static_count == 0)
2800 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2801 else
2802 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2803
90e3cdf2
JJ		 2804 synthetic_opd = opd;
2805 synthetic_relocatable = relocatable;
595da8c5 2806 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2807
c9727e01
AM		 2808 if (!relocatable && symcount > 1)
2809 {
2810 long j;
2811 /* Trim duplicate syms, since we may have merged the normal and
2812 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2813 different values, so trim any with the same value. */
c9727e01
AM		 2814 for (i = 1, j = 1; i < symcount; ++i)
2815 if (syms[i - 1]->value + syms[i - 1]->section->vma
2816 != syms[i]->value + syms[i]->section->vma)
2817 syms[j++] = syms[i];
2818 symcount = j;
2819 }
2820
699733f6
AM		 2821 i = 0;
2822 if (syms[i]->section == opd)
2823 ++i;
2824 codesecsym = i;
90e3cdf2 2825
699733f6
AM		 2826 for (; i < symcount; ++i)
2827 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2828 != (SEC_CODE | SEC_ALLOC))
2829 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2830 break;
2831 codesecsymend = i;
90e3cdf2 2832
699733f6
AM		 2833 for (; i < symcount; ++i)
2834 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2835 break;
2836 secsymend = i;
90e3cdf2 2837
699733f6
AM		 2838 for (; i < symcount; ++i)
2839 if (syms[i]->section != opd)
2840 break;
2841 opdsymend = i;
90e3cdf2 2842
699733f6
AM		 2843 for (; i < symcount; ++i)
2844 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2845 != (SEC_CODE | SEC_ALLOC))
2846 break;
2847 symcount = i;
2848
c9727e01 2849 count = 0;
699733f6 2850 if (opdsymend == secsymend)
c9727e01 2851 goto done;
90e3cdf2 2852
699733f6 2853 if (relocatable)
90e3cdf2 2854 {
699733f6
AM		 2855 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2856 arelent *r;
2857 size_t size;
2858 long relcount;
90e3cdf2 2859
699733f6 2860 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2861 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2862 if (relcount == 0)
c9727e01 2863 goto done;
90e3cdf2 2864
7356fed5
AM		 2865 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2866 {
2867 count = -1;
2868 goto done;
2869 }
2870
699733f6 2871 size = 0;
595da8c5 2872 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2873 {
2874 asymbol *sym;
90e3cdf2 2875
595da8c5 2876 while (r < opd->relocation + relcount
699733f6
AM		 2877 && r->address < syms[i]->value + opd->vma)
2878 ++r;
90e3cdf2 2879
595da8c5 2880 if (r == opd->relocation + relcount)
699733f6 2881 break;
90e3cdf2 2882
699733f6
AM		 2883 if (r->address != syms[i]->value + opd->vma)
2884 continue;
90e3cdf2 2885
699733f6
AM		 2886 if (r->howto->type != R_PPC64_ADDR64)
2887 continue;
90e3cdf2 2888
699733f6
AM		 2889 sym = *r->sym_ptr_ptr;
2890 if (!sym_exists_at (syms, opdsymend, symcount,
2891 sym->section->id, sym->value + r->addend))
2892 {
2893 ++count;
2894 size += sizeof (asymbol);
2895 size += strlen (syms[i]->name) + 2;
2896 }
2897 }
90e3cdf2 2898
699733f6
AM		 2899 s = *ret = bfd_malloc (size);
2900 if (s == NULL)
2901 {
7356fed5 2902 count = -1;
c9727e01 2903 goto done;
699733f6 2904 }
90e3cdf2 2905
699733f6 2906 names = (char *) (s + count);
90e3cdf2 2907
595da8c5 2908 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2909 {
699733f6 2910 asymbol *sym;
90e3cdf2 2911
595da8c5 2912 while (r < opd->relocation + relcount
699733f6
AM		 2913 && r->address < syms[i]->value + opd->vma)
2914 ++r;
90e3cdf2 2915
595da8c5 2916 if (r == opd->relocation + relcount)
699733f6
AM		 2917 break;
2918
2919 if (r->address != syms[i]->value + opd->vma)
2920 continue;
2921
2922 if (r->howto->type != R_PPC64_ADDR64)
2923 continue;
90e3cdf2 2924
699733f6
AM		 2925 sym = *r->sym_ptr_ptr;
2926 if (!sym_exists_at (syms, opdsymend, symcount,
2927 sym->section->id, sym->value + r->addend))
2928 {
2929 size_t len;
2930
2931 *s = *syms[i];
2932 s->section = sym->section;
2933 s->value = sym->value + r->addend;
2934 s->name = names;
2935 *names++ = '.';
2936 len = strlen (syms[i]->name);
2937 memcpy (names, syms[i]->name, len + 1);
2938 names += len + 1;
2939 s++;
2940 }
2941 }
2942 }
2943 else
90e3cdf2 2944 {
699733f6
AM		 2945 bfd_byte *contents;
2946 size_t size;
90e3cdf2 2947
699733f6
AM		 2948 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2949 {
2950 if (contents)
c9727e01
AM		 2951 {
2952 free_contents_and_exit:
2953 free (contents);
2954 }
7356fed5 2955 count = -1;
c9727e01 2956 goto done;
699733f6 2957 }
90e3cdf2 2958
699733f6
AM		 2959 size = 0;
2960 for (i = secsymend; i < opdsymend; ++i)
2961 {
2962 bfd_vma ent;
90e3cdf2 2963
699733f6
AM		 2964 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2965 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2966 {
2967 ++count;
2968 size += sizeof (asymbol);
2969 size += strlen (syms[i]->name) + 2;
2970 }
2971 }
90e3cdf2 2972
699733f6
AM		 2973 s = *ret = bfd_malloc (size);
2974 if (s == NULL)
7356fed5 2975 goto free_contents_and_exit;
90e3cdf2 2976
699733f6 2977 names = (char *) (s + count);
90e3cdf2 2978
699733f6 2979 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2980 {
699733f6 2981 bfd_vma ent;
90e3cdf2 2982
699733f6
AM		 2983 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2984 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2985 {
c9727e01 2986 long lo, hi;
699733f6 2987 size_t len;
c9727e01 2988 asection *sec = abfd->sections;
90e3cdf2 2989
699733f6
AM		 2990 *s = *syms[i];
2991 lo = codesecsym;
2992 hi = codesecsymend;
2993 while (lo < hi)
2994 {
c9727e01 2995 long mid = (lo + hi) >> 1;
699733f6
AM		 2996 if (syms[mid]->section->vma < ent)
2997 lo = mid + 1;
2998 else if (syms[mid]->section->vma > ent)
2999 hi = mid;
3000 else
c9727e01
AM		 3001 {
3002 sec = syms[mid]->section;
3003 break;
3004 }
699733f6
AM		 3005 }
3006
c9727e01 3007 if (lo >= hi && lo > codesecsym)
699733f6 3008 sec = syms[lo - 1]->section;
699733f6
AM		 3009
3010 for (; sec != NULL; sec = sec->next)
3011 {
3012 if (sec->vma > ent)
3013 break;
3014 if ((sec->flags & SEC_ALLOC) == 0
3015 || (sec->flags & SEC_LOAD) == 0)
3016 break;
3017 if ((sec->flags & SEC_CODE) != 0)
3018 s->section = sec;
3019 }
3020 s->value = ent - s->section->vma;
3021 s->name = names;
3022 *names++ = '.';
3023 len = strlen (syms[i]->name);
3024 memcpy (names, syms[i]->name, len + 1);
3025 names += len + 1;
3026 s++;
90e3cdf2 3027 }
90e3cdf2 3028 }
699733f6 3029 free (contents);
90e3cdf2
JJ		 3030 }
3031
c9727e01 3032 done:
a7535cf3 3033 free (syms);
90e3cdf2
JJ		 3034 return count;
3035}
5bd4f169 3036\f
65f38f15
AM		 3037/* The following functions are specific to the ELF linker, while
3038 functions above are used generally. Those named ppc64_elf_* are
3039 called by the main ELF linker code. They appear in this file more
3040 or less in the order in which they are called. eg.
3041 ppc64_elf_check_relocs is called early in the link process,
3042 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3043 called.
3044
3045 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3046 functions have both a function code symbol and a function descriptor
3047 symbol. A call to foo in a relocatable object file looks like:
3048
3049 . .text
3050 . x:
3051 . bl .foo
3052 . nop
3053
3054 The function definition in another object file might be:
3055
3056 . .section .opd
3057 . foo: .quad .foo
3058 . .quad .TOC.@tocbase
3059 . .quad 0
3060 .
3061 . .text
3062 . .foo: blr
3063
3064 When the linker resolves the call during a static link, the branch
3065 unsurprisingly just goes to .foo and the .opd information is unused.
3066 If the function definition is in a shared library, things are a little
3067 different: The call goes via a plt call stub, the opd information gets
3068 copied to the plt, and the linker patches the nop.
3069
3070 . x:
3071 . bl .foo_stub
3072 . ld 2,40(1)
3073 .
3074 .
3075 . .foo_stub:
3076 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3077 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3078 . std 2,40(1) # this is the general idea
3079 . ld 11,0(12)
3080 . ld 2,8(12)
3081 . mtctr 11
3082 . ld 11,16(12)
3083 . bctr
3084 .
3085 . .section .plt
3086 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3087
3088 The "reloc ()" notation is supposed to indicate that the linker emits
3089 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3090 copying.
3091
3092 What are the difficulties here? Well, firstly, the relocations
3093 examined by the linker in check_relocs are against the function code
3094 sym .foo, while the dynamic relocation in the plt is emitted against
3095 the function descriptor symbol, foo. Somewhere along the line, we need
3096 to carefully copy dynamic link information from one symbol to the other.
3097 Secondly, the generic part of the elf linker will make .foo a dynamic
3098 symbol as is normal for most other backends. We need foo dynamic
3099 instead, at least for an application final link. However, when
3100 creating a shared library containing foo, we need to have both symbols
3101 dynamic so that references to .foo are satisfied during the early
3102 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3103 definition from some other object, eg. a static library.
3104
3105 Update: As of August 2004, we support a new convention. Function
3106 calls may use the function descriptor symbol, ie. "bl foo". This
3107 behaves exactly as "bl .foo". */
65f38f15
AM		 3108
3109/* The linker needs to keep track of the number of relocs that it
3110 decides to copy as dynamic relocs in check_relocs for each symbol.
3111 This is so that it can later discard them if they are found to be
3112 unnecessary. We store the information in a field extending the
3113 regular ELF linker hash table. */
3114
3115struct ppc_dyn_relocs
3116{
3117 struct ppc_dyn_relocs *next;
3118
3119 /* The input section of the reloc. */
3120 asection *sec;
3121
3122 /* Total number of relocs copied for the input section. */
3123 bfd_size_type count;
3124
3125 /* Number of pc-relative relocs copied for the input section. */
3126 bfd_size_type pc_count;
3127};
3128
411e1bfb
AM		 3129/* Track GOT entries needed for a given symbol. We might need more
3130 than one got entry per symbol. */
3131struct got_entry
3132{
3133 struct got_entry *next;
3134
e7b938ca 3135 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3136 bfd_vma addend;
3137
e717da7e
AM		 3138 /* Unlike other ELF targets, we use separate GOT entries for the same
3139 symbol referenced from different input files. This is to support
3140 automatic multiple TOC/GOT sections, where the TOC base can vary
3141 from one input file to another.
3142
3143 Point to the BFD owning this GOT entry. */
3144 bfd *owner;
3145
3146 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3147 TLS_TPREL or TLS_DTPREL for tls entries. */
3148 char tls_type;
3149
e7b938ca 3150 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3151 union
3152 {
3153 bfd_signed_vma refcount;
3154 bfd_vma offset;
3155 } got;
411e1bfb
AM		 3156};
3157
3158/* The same for PLT. */
3159struct plt_entry
3160{
3161 struct plt_entry *next;
3162
3163 bfd_vma addend;
3164
3165 union
3166 {
3167 bfd_signed_vma refcount;
3168 bfd_vma offset;
3169 } plt;
3170};
3171
65f38f15 3172/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3173 selects those that must be copied when linking a shared library,
3174 even when the symbol is local. */
65f38f15 3175
411e1bfb 3176#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3177 ((RTYPE) != R_PPC64_REL32 \
3178 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3179 && (RTYPE) != R_PPC64_REL30)
65f38f15 3180
f4656909
AM		 3181/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3182 copying dynamic variables from a shared lib into an app's dynbss
3183 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3184 shared lib. With code that gcc generates, it's vital that this be
3185 enabled; In the PowerPC64 ABI, the address of a function is actually
3186 the address of a function descriptor, which resides in the .opd
3187 section. gcc uses the descriptor directly rather than going via the
3188 GOT as some other ABI's do, which means that initialized function
3189 pointers must reference the descriptor. Thus, a function pointer
3190 initialized to the address of a function in a shared library will
3191 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3192 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3193 presents a problem as a plt entry for that function is also
3194 initialized from the function descriptor symbol and the copy reloc
3195 may not be initialized first. */
a23b6845 3196#define ELIMINATE_COPY_RELOCS 1
f4656909 3197
721956f4
AM		 3198/* Section name for stubs is the associated section name plus this
3199 string. */
3200#define STUB_SUFFIX ".stub"
3201
3202/* Linker stubs.
3203 ppc_stub_long_branch:
3204 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3205 destination, but a 24 bit branch in a stub section will reach.
3206 . b dest
3207
3208 ppc_stub_plt_branch:
3209 Similar to the above, but a 24 bit branch in the stub section won't
3210 reach its destination.
87e226ce
AM		 3211 . addis %r12,%r2,xxx@toc@ha
3212 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3213 . mtctr %r11
3214 . bctr
3215
3216 ppc_stub_plt_call:
2c66dc6c
AM		 3217 Used to call a function in a shared library. If it so happens that
3218 the plt entry referenced crosses a 64k boundary, then an extra
3219 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3220 xxx+16 as appropriate.
87e226ce 3221 . addis %r12,%r2,xxx@toc@ha
721956f4 3222 . std %r2,40(%r1)
87e226ce
AM		 3223 . ld %r11,xxx+0@toc@l(%r12)
3224 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3225 . mtctr %r11
87e226ce 3226 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3227 . bctr
ad8e1ba5
AM		 3228
3229 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3230 code to adjust the value and save r2 to support multiple toc sections.
3231 A ppc_stub_long_branch with an r2 offset looks like:
3232 . std %r2,40(%r1)
3233 . addis %r2,%r2,off@ha
3234 . addi %r2,%r2,off@l
3235 . b dest
3236
3237 A ppc_stub_plt_branch with an r2 offset looks like:
3238 . std %r2,40(%r1)
3239 . addis %r12,%r2,xxx@toc@ha
3240 . ld %r11,xxx@toc@l(%r12)
3241 . addis %r2,%r2,off@ha
3242 . addi %r2,%r2,off@l
3243 . mtctr %r11
3244 . bctr
721956f4
AM		 3245*/
3246
3247enum ppc_stub_type {
3248 ppc_stub_none,
3249 ppc_stub_long_branch,
ad8e1ba5 3250 ppc_stub_long_branch_r2off,
721956f4 3251 ppc_stub_plt_branch,
ad8e1ba5 3252 ppc_stub_plt_branch_r2off,
721956f4
AM		 3253 ppc_stub_plt_call
3254};
3255
3256struct ppc_stub_hash_entry {
3257
3258 /* Base hash table entry structure. */
3259 struct bfd_hash_entry root;
3260
ad8e1ba5
AM		 3261 enum ppc_stub_type stub_type;
3262
721956f4
AM		 3263 /* The stub section. */
3264 asection *stub_sec;
3265
3266 /* Offset within stub_sec of the beginning of this stub. */
3267 bfd_vma stub_offset;
3268
3269 /* Given the symbol's value and its section we can determine its final
3270 value when building the stubs (so the stub knows where to jump. */
3271 bfd_vma target_value;
3272 asection *target_section;
3273
721956f4
AM		 3274 /* The symbol table entry, if any, that this was derived from. */
3275 struct ppc_link_hash_entry *h;
3276
411e1bfb
AM		 3277 /* And the reloc addend that this was derived from. */
3278 bfd_vma addend;
3279
721956f4
AM		 3280 /* Where this stub is being called from, or, in the case of combined
3281 stub sections, the first input section in the group. */
3282 asection *id_sec;
3283};
3284
3285struct ppc_branch_hash_entry {
3286
3287 /* Base hash table entry structure. */
3288 struct bfd_hash_entry root;
3289
c456f082 3290 /* Offset within branch lookup table. */
721956f4
AM		 3291 unsigned int offset;
3292
3293 /* Generation marker. */
3294 unsigned int iter;
3295};
65f38f15
AM		 3296
3297struct ppc_link_hash_entry
3298{
3299 struct elf_link_hash_entry elf;
3300
b3fac117
AM		 3301 union {
3302 /* A pointer to the most recently used stub hash entry against this
3303 symbol. */
3304 struct ppc_stub_hash_entry *stub_cache;
3305
3306 /* A pointer to the next symbol starting with a '.' */
3307 struct ppc_link_hash_entry *next_dot_sym;
3308 } u;
721956f4 3309
65f38f15
AM		 3310 /* Track dynamic relocs copied for this symbol. */
3311 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3312
721956f4 3313 /* Link between function code and descriptor symbols. */
34814b9f 3314 struct ppc_link_hash_entry *oh;
721956f4 3315
e86ce104
AM		 3316 /* Flag function code and descriptor symbols. */
3317 unsigned int is_func:1;
3318 unsigned int is_func_descriptor:1;
908b32fc 3319 unsigned int fake:1;
411e1bfb 3320
c5614fa4
AM		 3321 /* Whether global opd/toc sym has been adjusted or not.
3322 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3323 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3324 unsigned int adjust_done:1;
3325
99877b66
AM		 3326 /* Set if we twiddled this symbol to weak at some stage. */
3327 unsigned int was_undefined:1;
3328
411e1bfb 3329 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3330 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3331 corresponding relocs are encountered during check_relocs.
3332 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3333 indicate the corresponding GOT entry type is not needed.
3334 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3335 a TPREL one. We use a separate flag rather than setting TPREL
3336 just for convenience in distinguishing the two cases. */
3337#define TLS_GD 1 /* GD reloc. */
3338#define TLS_LD 2 /* LD reloc. */
3339#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3340#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3341#define TLS_TLS 16 /* Any TLS reloc. */
3342#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3343#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3344 char tls_mask;
65f38f15
AM		 3345};
3346
3347/* ppc64 ELF linker hash table. */
3348
3349struct ppc_link_hash_table
3350{
3351 struct elf_link_hash_table elf;
3352
721956f4
AM		 3353 /* The stub hash table. */
3354 struct bfd_hash_table stub_hash_table;
3355
3356 /* Another hash table for plt_branch stubs. */
3357 struct bfd_hash_table branch_hash_table;
3358
3359 /* Linker stub bfd. */
3360 bfd *stub_bfd;
3361
3362 /* Linker call-backs. */
4ce794b7
AM		 3363 asection * (*add_stub_section) (const char *, asection *);
3364 void (*layout_sections_again) (void);
721956f4
AM		 3365
3366 /* Array to keep track of which stub sections have been created, and
3367 information on stub grouping. */
3368 struct map_stub {
3369 /* This is the section to which stubs in the group will be attached. */
3370 asection *link_sec;
3371 /* The stub section. */
3372 asection *stub_sec;
ad8e1ba5
AM		 3373 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3374 bfd_vma toc_off;
721956f4
AM		 3375 } *stub_group;
3376
ad8e1ba5
AM		 3377 /* Temp used when calculating TOC pointers. */
3378 bfd_vma toc_curr;
3379
8f3bab57
AM		 3380 /* Highest input section id. */
3381 int top_id;
3382
734b6cf9
AM		 3383 /* Highest output section index. */
3384 int top_index;
3385
b3fac117
AM		 3386 /* Used when adding symbols. */
3387 struct ppc_link_hash_entry *dot_syms;
3388
734b6cf9
AM		 3389 /* List of input sections for each output section. */
3390 asection **input_list;
721956f4 3391
65f38f15 3392 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3393 asection *got;
4ce794b7
AM		 3394 asection *plt;
3395 asection *relplt;
3396 asection *dynbss;
3397 asection *relbss;
3398 asection *glink;
82bd7b59 3399 asection *sfpr;
4ce794b7
AM		 3400 asection *brlt;
3401 asection *relbrlt;
ec338859 3402
8387904d
AM		 3403 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3404 struct ppc_link_hash_entry *tls_get_addr;
3405 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3406
9b5ecbd0
AM		 3407 /* Statistics. */
3408 unsigned long stub_count[ppc_stub_plt_call];
3409
ee75fd95
AM		 3410 /* Number of stubs against global syms. */
3411 unsigned long stub_globals;
3412
ad8e1ba5 3413 /* Set if we should emit symbols for stubs. */
99877b66 3414 unsigned int emit_stub_syms:1;
ad8e1ba5 3415
4c52953f
AM		 3416 /* Support for multiple toc sections. */
3417 unsigned int no_multi_toc:1;
3418 unsigned int multi_toc_needed:1;
3419
5d1634d7 3420 /* Set on error. */
99877b66 3421 unsigned int stub_error:1;
721956f4 3422
99877b66
AM		 3423 /* Temp used by ppc64_elf_check_directives. */
3424 unsigned int twiddled_syms:1;
721956f4
AM		 3425
3426 /* Incremented every time we size stubs. */
3427 unsigned int stub_iteration;
5d1634d7 3428
ec338859
AM		 3429 /* Small local sym to section mapping cache. */
3430 struct sym_sec_cache sym_sec;
65f38f15
AM		 3431};
3432
4c52953f
AM		 3433/* Rename some of the generic section flags to better document how they
3434 are used here. */
3435#define has_toc_reloc has_gp_reloc
3436#define makes_toc_func_call need_finalize_relax
3437#define call_check_in_progress reloc_done
3438
65f38f15
AM		 3439/* Get the ppc64 ELF linker hash table from a link_info structure. */
3440
3441#define ppc_hash_table(p) \
3442 ((struct ppc_link_hash_table *) ((p)->hash))
3443
721956f4
AM		 3444#define ppc_stub_hash_lookup(table, string, create, copy) \
3445 ((struct ppc_stub_hash_entry *) \
3446 bfd_hash_lookup ((table), (string), (create), (copy)))
3447
3448#define ppc_branch_hash_lookup(table, string, create, copy) \
3449 ((struct ppc_branch_hash_entry *) \
3450 bfd_hash_lookup ((table), (string), (create), (copy)))
3451
3452/* Create an entry in the stub hash table. */
3453
3454static struct bfd_hash_entry *
4ce794b7
AM		 3455stub_hash_newfunc (struct bfd_hash_entry *entry,
3456 struct bfd_hash_table *table,
3457 const char *string)
721956f4
AM		 3458{
3459 /* Allocate the structure if it has not already been allocated by a
3460 subclass. */
3461 if (entry == NULL)
3462 {
3463 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3464 if (entry == NULL)
3465 return entry;
3466 }
3467
3468 /* Call the allocation method of the superclass. */
3469 entry = bfd_hash_newfunc (entry, table, string);
3470 if (entry != NULL)
3471 {
3472 struct ppc_stub_hash_entry *eh;
3473
3474 /* Initialize the local fields. */
3475 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3476 eh->stub_type = ppc_stub_none;
721956f4
AM		 3477 eh->stub_sec = NULL;
3478 eh->stub_offset = 0;
3479 eh->target_value = 0;
3480 eh->target_section = NULL;
721956f4
AM		 3481 eh->h = NULL;
3482 eh->id_sec = NULL;
3483 }
3484
3485 return entry;
3486}
3487
3488/* Create an entry in the branch hash table. */
3489
3490static struct bfd_hash_entry *
4ce794b7
AM		 3491branch_hash_newfunc (struct bfd_hash_entry *entry,
3492 struct bfd_hash_table *table,
3493 const char *string)
721956f4
AM		 3494{
3495 /* Allocate the structure if it has not already been allocated by a
3496 subclass. */
3497 if (entry == NULL)
3498 {
3499 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3500 if (entry == NULL)
3501 return entry;
3502 }
3503
3504 /* Call the allocation method of the superclass. */
3505 entry = bfd_hash_newfunc (entry, table, string);
3506 if (entry != NULL)
3507 {
3508 struct ppc_branch_hash_entry *eh;
3509
3510 /* Initialize the local fields. */
3511 eh = (struct ppc_branch_hash_entry *) entry;
3512 eh->offset = 0;
3513 eh->iter = 0;
3514 }
3515
3516 return entry;
3517}
3518
65f38f15
AM		 3519/* Create an entry in a ppc64 ELF linker hash table. */
3520
3521static struct bfd_hash_entry *
4ce794b7
AM		 3522link_hash_newfunc (struct bfd_hash_entry *entry,
3523 struct bfd_hash_table *table,
3524 const char *string)
65f38f15
AM		 3525{
3526 /* Allocate the structure if it has not already been allocated by a
3527 subclass. */
3528 if (entry == NULL)
3529 {
3530 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3531 if (entry == NULL)
3532 return entry;
3533 }
3534
3535 /* Call the allocation method of the superclass. */
3536 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3537 if (entry != NULL)
3538 {
3539 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3540
b3fac117 3541 memset (&eh->u.stub_cache, 0,
908b32fc 3542 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 3543 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3544
3545 /* When making function calls, old ABI code references function entry
3546 points (dot symbols), while new ABI code references the function
3547 descriptor symbol. We need to make any combination of reference and
3548 definition work together, without breaking archive linking.
3549
3550 For a defined function "foo" and an undefined call to "bar":
3551 An old object defines "foo" and ".foo", references ".bar" (possibly
3552 "bar" too).
3553 A new object defines "foo" and references "bar".
3554
3555 A new object thus has no problem with its undefined symbols being
3556 satisfied by definitions in an old object. On the other hand, the
3557 old object won't have ".bar" satisfied by a new object.
3558
3559 Keep a list of newly added dot-symbols. */
3560
3561 if (string[0] == '.')
3562 {
3563 struct ppc_link_hash_table *htab;
3564
3565 htab = (struct ppc_link_hash_table *) table;
3566 eh->u.next_dot_sym = htab->dot_syms;
3567 htab->dot_syms = eh;
3568 }
65f38f15
AM		 3569 }
3570
3571 return entry;
3572}
3573
3574/* Create a ppc64 ELF linker hash table. */
3575
3576static struct bfd_link_hash_table *
4ce794b7 3577ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3578{
3579 struct ppc_link_hash_table *htab;
3580 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3581
4ce794b7 3582 htab = bfd_zmalloc (amt);
65f38f15
AM		 3583 if (htab == NULL)
3584 return NULL;
3585
66eb6687
AM		 3586 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3587 sizeof (struct ppc_link_hash_entry)))
65f38f15 3588 {
e2d34d7d 3589 free (htab);
65f38f15
AM		 3590 return NULL;
3591 }
3592
721956f4 3593 /* Init the stub hash table too. */
66eb6687
AM		 3594 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3595 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM		 3596 return NULL;
3597
3598 /* And the branch hash table. */
66eb6687
AM		 3599 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3600 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM		 3601 return NULL;
3602
3254fd24
AM		 3603 /* Initializing two fields of the union is just cosmetic. We really
3604 only care about glist, but when compiled on a 32-bit host the
3605 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3606 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3607 htab->elf.init_got_refcount.refcount = 0;
3608 htab->elf.init_got_refcount.glist = NULL;
3609 htab->elf.init_plt_refcount.refcount = 0;
3610 htab->elf.init_plt_refcount.glist = NULL;
3611 htab->elf.init_got_offset.offset = 0;
3612 htab->elf.init_got_offset.glist = NULL;
3613 htab->elf.init_plt_offset.offset = 0;
3614 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3615
65f38f15
AM		 3616 return &htab->elf.root;
3617}
3618
721956f4
AM		 3619/* Free the derived linker hash table. */
3620
3621static void
4ce794b7 3622ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3623{
3624 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3625
3626 bfd_hash_table_free (&ret->stub_hash_table);
3627 bfd_hash_table_free (&ret->branch_hash_table);
3628 _bfd_generic_link_hash_table_free (hash);
3629}
3630
e717da7e
AM		 3631/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3632
3633void
3634ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3635{
3636 struct ppc_link_hash_table *htab;
3637
3638 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3639
3640/* Always hook our dynamic sections into the first bfd, which is the
3641 linker created stub bfd. This ensures that the GOT header is at
3642 the start of the output TOC section. */
3643 htab = ppc_hash_table (info);
3644 htab->stub_bfd = abfd;
3645 htab->elf.dynobj = abfd;
3646}
3647
721956f4
AM		 3648/* Build a name for an entry in the stub hash table. */
3649
3650static char *
4ce794b7
AM		 3651ppc_stub_name (const asection *input_section,
3652 const asection *sym_sec,
3653 const struct ppc_link_hash_entry *h,
3654 const Elf_Internal_Rela *rel)
721956f4
AM		 3655{
3656 char *stub_name;
3657 bfd_size_type len;
3658
3659 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3660 offsets from a sym as a branch target? In fact, we could
3661 probably assume the addend is always zero. */
3662 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3663
3664 if (h)
3665 {
3666 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3667 stub_name = bfd_malloc (len);
46de2a7c
AM		 3668 if (stub_name == NULL)
3669 return stub_name;
3670
3671 sprintf (stub_name, "%08x.%s+%x",
3672 input_section->id & 0xffffffff,
3673 h->elf.root.root.string,
3674 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3675 }
3676 else
3677 {
ad8e1ba5 3678 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3679 stub_name = bfd_malloc (len);
46de2a7c
AM		 3680 if (stub_name == NULL)
3681 return stub_name;
3682
3683 sprintf (stub_name, "%08x.%x:%x+%x",
3684 input_section->id & 0xffffffff,
3685 sym_sec->id & 0xffffffff,
3686 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3687 (int) rel->r_addend & 0xffffffff);
721956f4 3688 }
ee75fd95
AM		 3689 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3690 stub_name[len - 2] = 0;
721956f4
AM		 3691 return stub_name;
3692}
3693
3694/* Look up an entry in the stub hash. Stub entries are cached because
3695 creating the stub name takes a bit of time. */
3696
3697static struct ppc_stub_hash_entry *
4ce794b7
AM		 3698ppc_get_stub_entry (const asection *input_section,
3699 const asection *sym_sec,
039b3fef 3700 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3701 const Elf_Internal_Rela *rel,
3702 struct ppc_link_hash_table *htab)
721956f4
AM		 3703{
3704 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3705 const asection *id_sec;
3706
3707 /* If this input section is part of a group of sections sharing one
3708 stub section, then use the id of the first section in the group.
3709 Stub names need to include a section id, as there may well be
3710 more than one stub used to reach say, printf, and we need to
3711 distinguish between them. */
3712 id_sec = htab->stub_group[input_section->id].link_sec;
3713
b3fac117
AM		 3714 if (h != NULL && h->u.stub_cache != NULL
3715 && h->u.stub_cache->h == h
3716 && h->u.stub_cache->id_sec == id_sec)
721956f4 3717 {
b3fac117 3718 stub_entry = h->u.stub_cache;
721956f4
AM		 3719 }
3720 else
3721 {
3722 char *stub_name;
3723
3724 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3725 if (stub_name == NULL)
3726 return NULL;
3727
3728 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3729 stub_name, FALSE, FALSE);
721956f4 3730 if (h != NULL)
b3fac117 3731 h->u.stub_cache = stub_entry;
721956f4
AM		 3732
3733 free (stub_name);
3734 }
3735
3736 return stub_entry;
3737}
3738
3739/* Add a new stub entry to the stub hash. Not all fields of the new
3740 stub entry are initialised. */
3741
3742static struct ppc_stub_hash_entry *
4ce794b7
AM		 3743ppc_add_stub (const char *stub_name,
3744 asection *section,
3745 struct ppc_link_hash_table *htab)
721956f4
AM		 3746{
3747 asection *link_sec;
3748 asection *stub_sec;
3749 struct ppc_stub_hash_entry *stub_entry;
3750
3751 link_sec = htab->stub_group[section->id].link_sec;
3752 stub_sec = htab->stub_group[section->id].stub_sec;
3753 if (stub_sec == NULL)
3754 {
3755 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3756 if (stub_sec == NULL)
3757 {
d4c88bbb 3758 size_t namelen;
721956f4
AM		 3759 bfd_size_type len;
3760 char *s_name;
3761
d4c88bbb
AM		 3762 namelen = strlen (link_sec->name);
3763 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3764 s_name = bfd_alloc (htab->stub_bfd, len);
3765 if (s_name == NULL)
3766 return NULL;
3767
d4c88bbb
AM		 3768 memcpy (s_name, link_sec->name, namelen);
3769 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3770 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3771 if (stub_sec == NULL)
3772 return NULL;
3773 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3774 }
3775 htab->stub_group[section->id].stub_sec = stub_sec;
3776 }
3777
3778 /* Enter this entry into the linker stub hash table. */
3779 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3780 TRUE, FALSE);
721956f4
AM		 3781 if (stub_entry == NULL)
3782 {
d003868e
AM		 3783 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3784 section->owner, stub_name);
721956f4
AM		 3785 return NULL;
3786 }
3787
3788 stub_entry->stub_sec = stub_sec;
3789 stub_entry->stub_offset = 0;
3790 stub_entry->id_sec = link_sec;
3791 return stub_entry;
3792}
3793
82bd7b59
AM		 3794/* Create sections for linker generated code. */
3795
b34976b6 3796static bfd_boolean
4ce794b7 3797create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3798{
3799 struct ppc_link_hash_table *htab;
3800 flagword flags;
3801
3802 htab = ppc_hash_table (info);
3803
3804 /* Create .sfpr for code to save and restore fp regs. */
3805 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3806 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3807 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3808 flags);
82bd7b59 3809 if (htab->sfpr == NULL
82bd7b59 3810 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3811 return FALSE;
82bd7b59 3812
721956f4 3813 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3814 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3815 flags);
4ce794b7 3816 if (htab->glink == NULL
ee4bf8d2 3817 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 3818 return FALSE;
82bd7b59 3819
c456f082
AM		 3820 /* Create branch lookup table for plt_branch stubs. */
3821 if (info->shared)
3822 {
3823 flags = (SEC_ALLOC | SEC_LOAD
3824 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3825 htab->brlt
3826 = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt",
3827 flags);
3828 }
3829 else
3830 {
3831 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3832 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3833 htab->brlt
3834 = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags);
3835 }
3836
4ce794b7 3837 if (htab->brlt == NULL
4ce794b7 3838 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3839 return FALSE;
721956f4 3840
c456f082 3841 if (info->shared)
721956f4
AM		 3842 {
3843 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3844 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
c456f082
AM		 3845 htab->relbrlt
3846 = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt",
3847 flags);
721956f4 3848 }
c456f082
AM		 3849 else if (info->emitrelocations)
3850 {
3851 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3852 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3853 htab->relbrlt
3854 = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt",
3855 flags);
3856 }
3857 else
3858 return TRUE;
3859
3860 if (!htab->relbrlt
3861 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3862 return FALSE;
3863
b34976b6 3864 return TRUE;
82bd7b59
AM		 3865}
3866
e717da7e
AM		 3867/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3868 not already done. */
65f38f15 3869
b34976b6 3870static bfd_boolean
e717da7e 3871create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3872{
e717da7e
AM		 3873 asection *got, *relgot;
3874 flagword flags;
3875 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3876
4ce794b7 3877 if (!htab->got)
e717da7e
AM		 3878 {
3879 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3880 return FALSE;
3881
3882 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3883 if (!htab->got)
3884 abort ();
3885 }
3886
3887 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3888 | SEC_LINKER_CREATED);
3889
c456f082 3890 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3891 if (!got
e717da7e
AM		 3892 || !bfd_set_section_alignment (abfd, got, 3))
3893 return FALSE;
65f38f15 3894
c456f082
AM		 3895 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3896 flags | SEC_READONLY);
e717da7e 3897 if (!relgot
e717da7e 3898 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3899 return FALSE;
e717da7e
AM		 3900
3901 ppc64_elf_tdata (abfd)->got = got;
3902 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3903 return TRUE;
65f38f15 3904}
5bd4f169 3905
82bd7b59 3906/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3907
b34976b6 3908static bfd_boolean
4ce794b7 3909ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3910{
65f38f15 3911 struct ppc_link_hash_table *htab;
5bd4f169 3912
65f38f15 3913 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3914 return FALSE;
65f38f15 3915
e717da7e
AM		 3916 htab = ppc_hash_table (info);
3917 if (!htab->got)
3918 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3919 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3920 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3921 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3922 if (!info->shared)
4ce794b7 3923 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3924
e717da7e 3925 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3926 || (!info->shared && !htab->relbss))
65f38f15
AM		 3927 abort ();
3928
b34976b6 3929 return TRUE;
5bd4f169
AM		 3930}
3931
40d16e0b
AM		 3932/* Merge PLT info on FROM with that on TO. */
3933
3934static void
3935move_plt_plist (struct ppc_link_hash_entry *from,
3936 struct ppc_link_hash_entry *to)
3937{
3938 if (from->elf.plt.plist != NULL)
3939 {
3940 if (to->elf.plt.plist != NULL)
3941 {
3942 struct plt_entry **entp;
3943 struct plt_entry *ent;
3944
3945 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3946 {
3947 struct plt_entry *dent;
3948
3949 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3950 if (dent->addend == ent->addend)
3951 {
3952 dent->plt.refcount += ent->plt.refcount;
3953 *entp = ent->next;
3954 break;
3955 }
3956 if (dent == NULL)
3957 entp = &ent->next;
3958 }
3959 *entp = to->elf.plt.plist;
3960 }
3961
3962 to->elf.plt.plist = from->elf.plt.plist;
3963 from->elf.plt.plist = NULL;
3964 }
3965}
3966
65f38f15
AM		 3967/* Copy the extra info we tack onto an elf_link_hash_entry. */
3968
3969static void
fcfa13d2
AM		 3970ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3971 struct elf_link_hash_entry *dir,
3972 struct elf_link_hash_entry *ind)
65f38f15
AM		 3973{
3974 struct ppc_link_hash_entry *edir, *eind;
3975
3976 edir = (struct ppc_link_hash_entry *) dir;
3977 eind = (struct ppc_link_hash_entry *) ind;
3978
411e1bfb 3979 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3980 if (eind->dyn_relocs != NULL)
65f38f15 3981 {
bbd7ec4a
AM		 3982 if (edir->dyn_relocs != NULL)
3983 {
3984 struct ppc_dyn_relocs **pp;
3985 struct ppc_dyn_relocs *p;
3986
fcfa13d2 3987 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 3988 list. Merge any entries against the same section. */
3989 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3990 {
3991 struct ppc_dyn_relocs *q;
3992
3993 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3994 if (q->sec == p->sec)
3995 {
3996 q->pc_count += p->pc_count;
3997 q->count += p->count;
3998 *pp = p->next;
3999 break;
4000 }
4001 if (q == NULL)
4002 pp = &p->next;
4003 }
4004 *pp = edir->dyn_relocs;
4005 }
4006
65f38f15
AM		 4007 edir->dyn_relocs = eind->dyn_relocs;
4008 eind->dyn_relocs = NULL;
4009 }
65f38f15 4010
6349e628
AM		 4011 edir->is_func |= eind->is_func;
4012 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4013 edir->tls_mask |= eind->tls_mask;
6349e628 4014
81848ca0 4015 /* If called to transfer flags for a weakdef during processing
f5385ebf 4016 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4017 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 4018 if (!(ELIMINATE_COPY_RELOCS
4019 && eind->elf.root.type != bfd_link_hash_indirect
4020 && edir->elf.dynamic_adjusted))
4021 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4022
f5385ebf
AM		 4023 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4024 edir->elf.ref_regular |= eind->elf.ref_regular;
4025 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4026 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 4027
4028 /* If we were called to copy over info for a weak sym, that's all. */
4029 if (eind->elf.root.type != bfd_link_hash_indirect)
4030 return;
4031
81848ca0
AM		 4032 /* Copy over got entries that we may have already seen to the
4033 symbol which just became indirect. */
411e1bfb
AM		 4034 if (eind->elf.got.glist != NULL)
4035 {
4036 if (edir->elf.got.glist != NULL)
4037 {
4038 struct got_entry **entp;
4039 struct got_entry *ent;
4040
4041 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4042 {
4043 struct got_entry *dent;
4044
4045 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4046 if (dent->addend == ent->addend
e717da7e 4047 && dent->owner == ent->owner
411e1bfb
AM		 4048 && dent->tls_type == ent->tls_type)
4049 {
4050 dent->got.refcount += ent->got.refcount;
4051 *entp = ent->next;
4052 break;
4053 }
4054 if (dent == NULL)
4055 entp = &ent->next;
4056 }
4057 *entp = edir->elf.got.glist;
4058 }
4059
4060 edir->elf.got.glist = eind->elf.got.glist;
4061 eind->elf.got.glist = NULL;
4062 }
4063
4064 /* And plt entries. */
40d16e0b 4065 move_plt_plist (eind, edir);
411e1bfb 4066
fcfa13d2 4067 if (eind->elf.dynindx != -1)
411e1bfb 4068 {
fcfa13d2
AM		 4069 if (edir->elf.dynindx != -1)
4070 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4071 edir->elf.dynstr_index);
411e1bfb
AM		 4072 edir->elf.dynindx = eind->elf.dynindx;
4073 edir->elf.dynstr_index = eind->elf.dynstr_index;
4074 eind->elf.dynindx = -1;
4075 eind->elf.dynstr_index = 0;
4076 }
411e1bfb
AM		 4077}
4078
8387904d
AM		 4079/* Find the function descriptor hash entry from the given function code
4080 hash entry FH. Link the entries via their OH fields. */
4081
4082static struct ppc_link_hash_entry *
4083get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4084{
4085 struct ppc_link_hash_entry *fdh = fh->oh;
4086
4087 if (fdh == NULL)
4088 {
4089 const char *fd_name = fh->elf.root.root.string + 1;
4090
4091 fdh = (struct ppc_link_hash_entry *)
4092 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4093 if (fdh != NULL)
4094 {
4095 fdh->is_func_descriptor = 1;
4096 fdh->oh = fh;
4097 fh->is_func = 1;
4098 fh->oh = fdh;
4099 }
4100 }
4101
4102 return fdh;
4103}
4104
bb700d78
AM		 4105/* Make a fake function descriptor sym for the code sym FH. */
4106
4107static struct ppc_link_hash_entry *
4108make_fdh (struct bfd_link_info *info,
908b32fc 4109 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4110{
4111 bfd *abfd;
4112 asymbol *newsym;
4113 struct bfd_link_hash_entry *bh;
4114 struct ppc_link_hash_entry *fdh;
4115
4116 abfd = fh->elf.root.u.undef.abfd;
4117 newsym = bfd_make_empty_symbol (abfd);
4118 newsym->name = fh->elf.root.root.string + 1;
4119 newsym->section = bfd_und_section_ptr;
4120 newsym->value = 0;
908b32fc 4121 newsym->flags = BSF_WEAK;
bb700d78
AM		 4122
4123 bh = NULL;
4124 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4125 newsym->flags, newsym->section,
4126 newsym->value, NULL, FALSE, FALSE,
4127 &bh))
4128 return NULL;
4129
4130 fdh = (struct ppc_link_hash_entry *) bh;
4131 fdh->elf.non_elf = 0;
908b32fc
AM		 4132 fdh->fake = 1;
4133 fdh->is_func_descriptor = 1;
4134 fdh->oh = fh;
4135 fh->is_func = 1;
4136 fh->oh = fdh;
bb700d78
AM		 4137 return fdh;
4138}
4139
8387904d
AM		 4140/* Fix function descriptor symbols defined in .opd sections to be
4141 function type. */
555cd476
AM		 4142
4143static bfd_boolean
b3fac117 4144ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM		 4145 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4146 Elf_Internal_Sym *isym,
b3fac117 4147 const char **name ATTRIBUTE_UNUSED,
555cd476
AM		 4148 flagword *flags ATTRIBUTE_UNUSED,
4149 asection **sec,
4150 bfd_vma *value ATTRIBUTE_UNUSED)
4151{
8843416a
AM		 4152 if (*sec != NULL
4153 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4154 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4155
555cd476
AM		 4156 return TRUE;
4157}
4158
8387904d 4159/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4160 inclusion of a new ABI object archive that defines "bar".
4161 NAME is a symbol defined in an archive. Return a symbol in the hash
4162 table that might be satisfied by the archive symbols. */
8387904d
AM		 4163
4164static struct elf_link_hash_entry *
4165ppc64_elf_archive_symbol_lookup (bfd *abfd,
4166 struct bfd_link_info *info,
4167 const char *name)
4168{
4169 struct elf_link_hash_entry *h;
4170 char *dot_name;
4171 size_t len;
4172
4173 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4174 if (h != NULL
4175 /* Don't return this sym if it is a fake function descriptor
4176 created by add_symbol_adjust. */
4177 && !(h->root.type == bfd_link_hash_undefweak
4178 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4179 return h;
4180
4181 if (name[0] == '.')
4182 return h;
4183
4184 len = strlen (name);
4185 dot_name = bfd_alloc (abfd, len + 2);
4186 if (dot_name == NULL)
4187 return (struct elf_link_hash_entry *) 0 - 1;
4188 dot_name[0] = '.';
4189 memcpy (dot_name + 1, name, len + 1);
4190 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4191 bfd_release (abfd, dot_name);
4192 return h;
4193}
4194
4195/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4196 new ABI object defines "bar". Well, at least, undefined dot symbols
4197 are made weak. This stops later archive searches from including an
4198 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4199 prevents the linker complaining about undefined symbols.
4200 We also check and correct mismatched symbol visibility here. The
4201 most restrictive visibility of the function descriptor and the
4202 function entry symbol is used. */
8387904d
AM		 4203
4204static bfd_boolean
b3fac117 4205add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4206{
8387904d
AM		 4207 struct ppc_link_hash_table *htab;
4208 struct ppc_link_hash_entry *fdh;
4209
b3fac117 4210 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4211 return TRUE;
4212
b3fac117
AM		 4213 if (eh->elf.root.type == bfd_link_hash_warning)
4214 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4215
b3fac117
AM		 4216 if (eh->elf.root.root.string[0] != '.')
4217 abort ();
8387904d 4218
b3fac117 4219 htab = ppc_hash_table (info);
99877b66 4220 fdh = get_fdh (eh, htab);
bb700d78 4221 if (fdh == NULL
b3fac117 4222 && !info->relocatable
bb700d78
AM		 4223 && (eh->elf.root.type == bfd_link_hash_undefined
4224 || eh->elf.root.type == bfd_link_hash_undefweak)
4225 && eh->elf.ref_regular)
4226 {
4227 /* Make an undefweak function descriptor sym, which is enough to
4228 pull in an --as-needed shared lib, but won't cause link
4229 errors. Archives are handled elsewhere. */
b3fac117 4230 fdh = make_fdh (info, eh);
bb700d78 4231 if (fdh == NULL)
b3fac117 4232 return FALSE;
bb700d78
AM		 4233 else
4234 fdh->elf.ref_regular = 1;
4235 }
e87d886e 4236 else if (fdh != NULL)
8387904d 4237 {
35b0ce59
AM		 4238 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4239 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4240 if (entry_vis < descr_vis)
4241 fdh->elf.other += entry_vis - descr_vis;
4242 else if (entry_vis > descr_vis)
4243 eh->elf.other += descr_vis - entry_vis;
4244
e87d886e
AM		 4245 if ((fdh->elf.root.type == bfd_link_hash_defined
4246 || fdh->elf.root.type == bfd_link_hash_defweak)
4247 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4248 {
4249 eh->elf.root.type = bfd_link_hash_undefweak;
4250 eh->was_undefined = 1;
4251 htab->twiddled_syms = 1;
4252 }
8387904d 4253 }
99877b66 4254
8387904d
AM		 4255 return TRUE;
4256}
4257
b3fac117
AM		 4258/* Process list of dot-symbols we made in link_hash_newfunc. */
4259
8387904d 4260static bfd_boolean
b3fac117 4261ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4262{
99877b66 4263 struct ppc_link_hash_table *htab;
b3fac117 4264 struct ppc_link_hash_entry **p, *eh;
433817dd 4265
99877b66 4266 htab = ppc_hash_table (info);
ee75fd95 4267 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4268 return TRUE;
4269
b3fac117
AM		 4270 if (is_ppc64_elf_target (ibfd->xvec))
4271 {
4272 p = &htab->dot_syms;
4273 while ((eh = *p) != NULL)
4274 {
4275 *p = NULL;
4276 if (!add_symbol_adjust (eh, info))
4277 return FALSE;
4278 p = &eh->u.next_dot_sym;
4279 }
4280 }
4281
4282 /* Clear the list for non-ppc64 input files. */
4283 p = &htab->dot_syms;
4284 while ((eh = *p) != NULL)
4285 {
4286 *p = NULL;
4287 p = &eh->u.next_dot_sym;
4288 }
99877b66
AM		 4289
4290 /* We need to fix the undefs list for any syms we have twiddled to
4291 undef_weak. */
4292 if (htab->twiddled_syms)
4293 {
77cfaee6 4294 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4295 htab->twiddled_syms = 0;
4296 }
b3fac117 4297 return TRUE;
8387904d
AM		 4298}
4299
97fed1c9
JJ		 4300/* Undo hash table changes when an --as-needed input file is determined
4301 not to be needed. */
4302
4303static bfd_boolean
4304ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4305 struct bfd_link_info *info)
4306{
4307 ppc_hash_table (info)->dot_syms = NULL;
4308 return TRUE;
4309}
4310
411e1bfb 4311static bfd_boolean
4ce794b7
AM		 4312update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4313 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4314{
4315 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4316 char *local_got_tls_masks;
411e1bfb
AM		 4317
4318 if (local_got_ents == NULL)
4319 {
4320 bfd_size_type size = symtab_hdr->sh_info;
4321
e7b938ca 4322 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4323 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4324 if (local_got_ents == NULL)
4325 return FALSE;
4326 elf_local_got_ents (abfd) = local_got_ents;
4327 }
4328
4329 if ((tls_type & TLS_EXPLICIT) == 0)
4330 {
4331 struct got_entry *ent;
4332
4333 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4334 if (ent->addend == r_addend
4335 && ent->owner == abfd
4336 && ent->tls_type == tls_type)
411e1bfb
AM		 4337 break;
4338 if (ent == NULL)
4339 {
4340 bfd_size_type amt = sizeof (*ent);
4ce794b7 4341 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4342 if (ent == NULL)
4343 return FALSE;
4344 ent->next = local_got_ents[r_symndx];
4345 ent->addend = r_addend;
e717da7e 4346 ent->owner = abfd;
411e1bfb
AM		 4347 ent->tls_type = tls_type;
4348 ent->got.refcount = 0;
4349 local_got_ents[r_symndx] = ent;
4350 }
4351 ent->got.refcount += 1;
4352 }
4353
e7b938ca
AM		 4354 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4355 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4356 return TRUE;
65f38f15
AM		 4357}
4358
411e1bfb 4359static bfd_boolean
4ce794b7 4360update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4361{
411e1bfb 4362 struct plt_entry *ent;
1e2f5b6e 4363
411e1bfb
AM		 4364 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4365 if (ent->addend == addend)
4366 break;
4367 if (ent == NULL)
1e2f5b6e 4368 {
411e1bfb 4369 bfd_size_type amt = sizeof (*ent);
4ce794b7 4370 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4371 if (ent == NULL)
4372 return FALSE;
4373 ent->next = eh->elf.plt.plist;
4374 ent->addend = addend;
4375 ent->plt.refcount = 0;
4376 eh->elf.plt.plist = ent;
1e2f5b6e 4377 }
411e1bfb 4378 ent->plt.refcount += 1;
f5385ebf 4379 eh->elf.needs_plt = 1;
93f3fa99
AM		 4380 if (eh->elf.root.root.string[0] == '.'
4381 && eh->elf.root.root.string[1] != '\0')
4382 eh->is_func = 1;
b34976b6 4383 return TRUE;
1e2f5b6e
AM		 4384}
4385
5bd4f169 4386/* Look through the relocs for a section during the first phase, and
65f38f15 4387 calculate needed space in the global offset table, procedure
5d1634d7 4388 linkage table, and dynamic reloc sections. */
5bd4f169 4389
b34976b6 4390static bfd_boolean
4ce794b7
AM		 4391ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4392 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4393{
65f38f15 4394 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4395 Elf_Internal_Shdr *symtab_hdr;
4396 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4397 const Elf_Internal_Rela *rel;
4398 const Elf_Internal_Rela *rel_end;
5bd4f169 4399 asection *sreloc;
1e2f5b6e 4400 asection **opd_sym_map;
5bd4f169 4401
1049f94e 4402 if (info->relocatable)
b34976b6 4403 return TRUE;
5bd4f169 4404
680a3378
AM		 4405 /* Don't do anything special with non-loaded, non-alloced sections.
4406 In particular, any relocs in such sections should not affect GOT
4407 and PLT reference counting (ie. we don't allow them to create GOT
4408 or PLT entries), there's no possibility or desire to optimize TLS
4409 relocs, and there's not much point in propagating relocs to shared
4410 libs that the dynamic linker won't relocate. */
4411 if ((sec->flags & SEC_ALLOC) == 0)
4412 return TRUE;
4413
65f38f15 4414 htab = ppc_hash_table (info);
5bd4f169 4415 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4416
4417 sym_hashes = elf_sym_hashes (abfd);
4418 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4419 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4420 - symtab_hdr->sh_info);
5bd4f169
AM		 4421
4422 sreloc = NULL;
1e2f5b6e
AM		 4423 opd_sym_map = NULL;
4424 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4425 {
4426 /* Garbage collection needs some extra help with .opd sections.
4427 We don't want to necessarily keep everything referenced by
4428 relocs in .opd, as that would keep all functions. Instead,
4429 if we reference an .opd symbol (a function descriptor), we
4430 want to keep the function code symbol's section. This is
4431 easy for global symbols, but for local syms we need to keep
4432 information about the associated function section. Later, if
4433 edit_opd deletes entries, we'll use this array to adjust
4434 local syms in .opd. */
4435 union opd_info {
4436 asection *func_section;
4437 long entry_adjust;
4438 };
4439 bfd_size_type amt;
4440
3f764659 4441 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4442 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4443 if (opd_sym_map == NULL)
b34976b6 4444 return FALSE;
7c8fe5c4
AM		 4445 ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map;
4446 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4447 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4448 }
5bd4f169 4449
82bd7b59
AM		 4450 if (htab->sfpr == NULL
4451 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4452 return FALSE;
82bd7b59 4453
5bd4f169
AM		 4454 rel_end = relocs + sec->reloc_count;
4455 for (rel = relocs; rel < rel_end; rel++)
4456 {
4457 unsigned long r_symndx;
4458 struct elf_link_hash_entry *h;
04c9666a 4459 enum elf_ppc64_reloc_type r_type;
411e1bfb 4460 int tls_type = 0;
7c8fe5c4 4461 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM		 4462
4463 r_symndx = ELF64_R_SYM (rel->r_info);
4464 if (r_symndx < symtab_hdr->sh_info)
4465 h = NULL;
4466 else
973a3492
L		 4467 {
4468 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4469 while (h->root.type == bfd_link_hash_indirect
4470 || h->root.type == bfd_link_hash_warning)
4471 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4472 }
5bd4f169 4473
4ce794b7 4474 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4475 switch (r_type)
5bd4f169 4476 {
411e1bfb
AM		 4477 case R_PPC64_GOT_TLSLD16:
4478 case R_PPC64_GOT_TLSLD16_LO:
4479 case R_PPC64_GOT_TLSLD16_HI:
4480 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4481 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4482 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4483 goto dogottls;
4484
4485 case R_PPC64_GOT_TLSGD16:
4486 case R_PPC64_GOT_TLSGD16_LO:
4487 case R_PPC64_GOT_TLSGD16_HI:
4488 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4489 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4490 goto dogottls;
4491
4492 case R_PPC64_GOT_TPREL16_DS:
4493 case R_PPC64_GOT_TPREL16_LO_DS:
4494 case R_PPC64_GOT_TPREL16_HI:
4495 case R_PPC64_GOT_TPREL16_HA:
4496 if (info->shared)
4497 info->flags |= DF_STATIC_TLS;
4498 tls_type = TLS_TLS | TLS_TPREL;
4499 goto dogottls;
4500
4501 case R_PPC64_GOT_DTPREL16_DS:
4502 case R_PPC64_GOT_DTPREL16_LO_DS:
4503 case R_PPC64_GOT_DTPREL16_HI:
4504 case R_PPC64_GOT_DTPREL16_HA:
4505 tls_type = TLS_TLS | TLS_DTPREL;
4506 dogottls:
4507 sec->has_tls_reloc = 1;
4508 /* Fall thru */
4509
5bd4f169 4510 case R_PPC64_GOT16:
5bd4f169 4511 case R_PPC64_GOT16_DS:
65f38f15
AM		 4512 case R_PPC64_GOT16_HA:
4513 case R_PPC64_GOT16_HI:
4514 case R_PPC64_GOT16_LO:
5bd4f169 4515 case R_PPC64_GOT16_LO_DS:
65f38f15 4516 /* This symbol requires a global offset table entry. */
4c52953f 4517 sec->has_toc_reloc = 1;
e717da7e
AM		 4518 if (ppc64_elf_tdata (abfd)->got == NULL
4519 && !create_got_section (abfd, info))
b34976b6 4520 return FALSE;
5bd4f169
AM		 4521
4522 if (h != NULL)
4523 {
411e1bfb
AM		 4524 struct ppc_link_hash_entry *eh;
4525 struct got_entry *ent;
65f38f15 4526
411e1bfb
AM		 4527 eh = (struct ppc_link_hash_entry *) h;
4528 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4529 if (ent->addend == rel->r_addend
e717da7e 4530 && ent->owner == abfd
411e1bfb
AM		 4531 && ent->tls_type == tls_type)
4532 break;
4533 if (ent == NULL)
5bd4f169 4534 {
411e1bfb 4535 bfd_size_type amt = sizeof (*ent);
4ce794b7 4536 ent = bfd_alloc (abfd, amt);
411e1bfb 4537 if (ent == NULL)
b34976b6 4538 return FALSE;
411e1bfb
AM		 4539 ent->next = eh->elf.got.glist;
4540 ent->addend = rel->r_addend;
e717da7e 4541 ent->owner = abfd;
411e1bfb
AM		 4542 ent->tls_type = tls_type;
4543 ent->got.refcount = 0;
4544 eh->elf.got.glist = ent;
5bd4f169 4545 }
411e1bfb 4546 ent->got.refcount += 1;
e7b938ca 4547 eh->tls_mask |= tls_type;
5bd4f169 4548 }
411e1bfb
AM		 4549 else
4550 /* This is a global offset table entry for a local symbol. */
4551 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4552 rel->r_addend, tls_type))
4553 return FALSE;
5bd4f169
AM		 4554 break;
4555
5bd4f169 4556 case R_PPC64_PLT16_HA:
65f38f15
AM		 4557 case R_PPC64_PLT16_HI:
4558 case R_PPC64_PLT16_LO:
4559 case R_PPC64_PLT32:
4560 case R_PPC64_PLT64:
5bd4f169 4561 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4562 actually build the entry in adjust_dynamic_symbol,
4563 because this might be a case of linking PIC code without
4564 linking in any dynamic objects, in which case we don't
4565 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4566 if (h == NULL)
4567 {
4568 /* It does not make sense to have a procedure linkage
3fad3c7c 4569 table entry for a local symbol. */
5bd4f169 4570 bfd_set_error (bfd_error_bad_value);
b34976b6 4571 return FALSE;
5bd4f169 4572 }
411e1bfb
AM		 4573 else
4574 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4575 rel->r_addend))
4576 return FALSE;
5bd4f169
AM		 4577 break;
4578
4579 /* The following relocations don't need to propagate the
4580 relocation if linking a shared object since they are
4581 section relative. */
4582 case R_PPC64_SECTOFF:
4583 case R_PPC64_SECTOFF_LO:
4584 case R_PPC64_SECTOFF_HI:
4585 case R_PPC64_SECTOFF_HA:
4586 case R_PPC64_SECTOFF_DS:
4587 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4588 case R_PPC64_DTPREL16:
4589 case R_PPC64_DTPREL16_LO:
4590 case R_PPC64_DTPREL16_HI:
4591 case R_PPC64_DTPREL16_HA:
4592 case R_PPC64_DTPREL16_DS:
4593 case R_PPC64_DTPREL16_LO_DS:
4594 case R_PPC64_DTPREL16_HIGHER:
4595 case R_PPC64_DTPREL16_HIGHERA:
4596 case R_PPC64_DTPREL16_HIGHEST:
4597 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4598 break;
4599
ad8e1ba5
AM		 4600 /* Nor do these. */
4601 case R_PPC64_TOC16:
4602 case R_PPC64_TOC16_LO:
4603 case R_PPC64_TOC16_HI:
4604 case R_PPC64_TOC16_HA:
4605 case R_PPC64_TOC16_DS:
4606 case R_PPC64_TOC16_LO_DS:
4c52953f 4607 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4608 break;
4609
5bd4f169
AM		 4610 /* This relocation describes the C++ object vtable hierarchy.
4611 Reconstruct it for later use during GC. */
4612 case R_PPC64_GNU_VTINHERIT:
c152c796 4613 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4614 return FALSE;
5bd4f169
AM		 4615 break;
4616
4617 /* This relocation describes which C++ vtable entries are actually
4618 used. Record for later use during GC. */
4619 case R_PPC64_GNU_VTENTRY:
c152c796 4620 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4621 return FALSE;
5bd4f169
AM		 4622 break;
4623
721956f4
AM		 4624 case R_PPC64_REL14:
4625 case R_PPC64_REL14_BRTAKEN:
4626 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 4627 {
4628 asection *dest = NULL;
4629
4630 /* Heuristic: If jumping outside our section, chances are
4631 we are going to need a stub. */
4632 if (h != NULL)
4633 {
4634 /* If the sym is weak it may be overridden later, so
4635 don't assume we know where a weak sym lives. */
4636 if (h->root.type == bfd_link_hash_defined)
4637 dest = h->root.u.def.section;
4638 }
4639 else
4640 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4641 sec, r_symndx);
4642 if (dest != sec)
7c8fe5c4 4643 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4644 }
721956f4
AM		 4645 /* Fall through. */
4646
5d1634d7 4647 case R_PPC64_REL24:
8387904d 4648 if (h != NULL)
5d1634d7
AM		 4649 {
4650 /* We may need a .plt entry if the function this reloc
4651 refers to is in a shared lib. */
411e1bfb
AM		 4652 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4653 rel->r_addend))
4654 return FALSE;
8387904d
AM		 4655 if (h == &htab->tls_get_addr->elf
4656 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4657 sec->has_tls_reloc = 1;
8387904d 4658 else if (htab->tls_get_addr == NULL
0112cd26 4659 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM		 4660 && (h->root.root.string[15] == 0
4661 || h->root.root.string[15] == '@'))
411e1bfb 4662 {
8387904d
AM		 4663 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4664 sec->has_tls_reloc = 1;
4665 }
4666 else if (htab->tls_get_addr_fd == NULL
0112cd26 4667 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM		 4668 && (h->root.root.string[14] == 0
4669 || h->root.root.string[14] == '@'))
4670 {
4671 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4672 sec->has_tls_reloc = 1;
4673 }
4674 }
4675 break;
4676
4677 case R_PPC64_TPREL64:
4678 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4679 if (info->shared)
4680 info->flags |= DF_STATIC_TLS;
4681 goto dotlstoc;
4682
4683 case R_PPC64_DTPMOD64:
4684 if (rel + 1 < rel_end
4685 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4686 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4687 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4688 else
951fd09b 4689 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4690 goto dotlstoc;
4691
4692 case R_PPC64_DTPREL64:
4693 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4694 if (rel != relocs
4695 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4696 && rel[-1].r_offset == rel->r_offset - 8)
4697 /* This is the second reloc of a dtpmod, dtprel pair.
4698 Don't mark with TLS_DTPREL. */
4699 goto dodyn;
4700
4701 dotlstoc:
4702 sec->has_tls_reloc = 1;
4703 if (h != NULL)
4704 {
4705 struct ppc_link_hash_entry *eh;
4706 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4707 eh->tls_mask |= tls_type;
411e1bfb
AM		 4708 }
4709 else
4710 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4711 rel->r_addend, tls_type))
4712 return FALSE;
4713
7c8fe5c4
AM		 4714 ppc64_sec = ppc64_elf_section_data (sec);
4715 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4716 {
e7b938ca 4717 /* One extra to simplify get_tls_mask. */
eea6121a 4718 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM		 4719 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4720 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4721 return FALSE;
7c8fe5c4
AM		 4722 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4723 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 4724 }
4725 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4726 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4727
4728 /* Mark the second slot of a GD or LD entry.
4729 -1 to indicate GD and -2 to indicate LD. */
4730 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4731 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4732 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4733 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4734 goto dodyn;
4735
4736 case R_PPC64_TPREL16:
4737 case R_PPC64_TPREL16_LO:
4738 case R_PPC64_TPREL16_HI:
4739 case R_PPC64_TPREL16_HA:
4740 case R_PPC64_TPREL16_DS:
4741 case R_PPC64_TPREL16_LO_DS:
4742 case R_PPC64_TPREL16_HIGHER:
4743 case R_PPC64_TPREL16_HIGHERA:
4744 case R_PPC64_TPREL16_HIGHEST:
4745 case R_PPC64_TPREL16_HIGHESTA:
4746 if (info->shared)
4747 {
4748 info->flags |= DF_STATIC_TLS;
4749 goto dodyn;
5d1634d7
AM		 4750 }
4751 break;
4752
e86ce104 4753 case R_PPC64_ADDR64:
1e2f5b6e 4754 if (opd_sym_map != NULL
1e2f5b6e 4755 && rel + 1 < rel_end
4ce794b7 4756 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4757 {
8387904d
AM		 4758 if (h != NULL)
4759 {
4760 if (h->root.root.string[0] == '.'
4761 && h->root.root.string[1] != 0
4762 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4763 ;
4764 else
4765 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4766 }
4767 else
4768 {
4769 asection *s;
1e2f5b6e 4770
8387904d
AM		 4771 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4772 r_symndx);
4773 if (s == NULL)
4774 return FALSE;
4775 else if (s != sec)
3f764659 4776 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4777 }
1e2f5b6e 4778 }
e86ce104
AM		 4779 /* Fall through. */
4780
04c9666a 4781 case R_PPC64_REL30:
5bd4f169 4782 case R_PPC64_REL32:
04c9666a 4783 case R_PPC64_REL64:
65f38f15
AM		 4784 case R_PPC64_ADDR14:
4785 case R_PPC64_ADDR14_BRNTAKEN:
4786 case R_PPC64_ADDR14_BRTAKEN:
4787 case R_PPC64_ADDR16:
4788 case R_PPC64_ADDR16_DS:
4789 case R_PPC64_ADDR16_HA:
4790 case R_PPC64_ADDR16_HI:
4791 case R_PPC64_ADDR16_HIGHER:
4792 case R_PPC64_ADDR16_HIGHERA:
4793 case R_PPC64_ADDR16_HIGHEST:
4794 case R_PPC64_ADDR16_HIGHESTA:
4795 case R_PPC64_ADDR16_LO:
4796 case R_PPC64_ADDR16_LO_DS:
4797 case R_PPC64_ADDR24:
65f38f15 4798 case R_PPC64_ADDR32:
65f38f15
AM		 4799 case R_PPC64_UADDR16:
4800 case R_PPC64_UADDR32:
4801 case R_PPC64_UADDR64:
5bd4f169 4802 case R_PPC64_TOC:
81848ca0
AM		 4803 if (h != NULL && !info->shared)
4804 /* We may need a copy reloc. */
f5385ebf 4805 h->non_got_ref = 1;
81848ca0 4806
41bd81ab 4807 /* Don't propagate .opd relocs. */
1e2f5b6e 4808 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4809 break;
e86ce104 4810
65f38f15
AM		 4811 /* If we are creating a shared library, and this is a reloc
4812 against a global symbol, or a non PC relative reloc
4813 against a local symbol, then we need to copy the reloc
4814 into the shared library. However, if we are linking with
4815 -Bsymbolic, we do not need to copy a reloc against a
4816 global symbol which is defined in an object we are
4817 including in the link (i.e., DEF_REGULAR is set). At
4818 this point we have not seen all the input files, so it is
4819 possible that DEF_REGULAR is not set now but will be set
4820 later (it is never cleared). In case of a weak definition,
4821 DEF_REGULAR may be cleared later by a strong definition in
4822 a shared library. We account for that possibility below by
f4656909 4823 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4824 table entry. A similar situation occurs when creating
4825 shared libraries and symbol visibility changes render the
4826 symbol local.
4827
4828 If on the other hand, we are creating an executable, we
4829 may need to keep relocations for symbols satisfied by a
4830 dynamic library if we manage to avoid copy relocs for the
4831 symbol. */
411e1bfb 4832 dodyn:
65f38f15 4833 if ((info->shared
411e1bfb 4834 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4835 || (h != NULL
4836 && (! info->symbolic
4837 || h->root.type == bfd_link_hash_defweak
f5385ebf 4838 || !h->def_regular))))
f4656909
AM		 4839 || (ELIMINATE_COPY_RELOCS
4840 && !info->shared
65f38f15
AM		 4841 && h != NULL
4842 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4843 || !h->def_regular)))
5bd4f169 4844 {
ec338859
AM		 4845 struct ppc_dyn_relocs *p;
4846 struct ppc_dyn_relocs **head;
4847
65f38f15
AM		 4848 /* We must copy these reloc types into the output file.
4849 Create a reloc section in dynobj and make room for
4850 this reloc. */
5bd4f169
AM		 4851 if (sreloc == NULL)
4852 {
4853 const char *name;
65f38f15 4854 bfd *dynobj;
5bd4f169
AM		 4855
4856 name = (bfd_elf_string_from_elf_section
4857 (abfd,
4858 elf_elfheader (abfd)->e_shstrndx,
4859 elf_section_data (sec)->rel_hdr.sh_name));
4860 if (name == NULL)
b34976b6 4861 return FALSE;
5bd4f169 4862
0112cd26 4863 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM		 4864 || strcmp (bfd_get_section_name (abfd, sec),
4865 name + 5) != 0)
4866 {
4867 (*_bfd_error_handler)
d003868e
AM		 4868 (_("%B: bad relocation section name `%s\'"),
4869 abfd, name);
5d1634d7 4870 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4871 }
4872
65f38f15 4873 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4874 sreloc = bfd_get_section_by_name (dynobj, name);
4875 if (sreloc == NULL)
4876 {
4877 flagword flags;
4878
5bd4f169 4879 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4880 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4881 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4882 sreloc = bfd_make_section_with_flags (dynobj,
4883 name,
4884 flags);
5bd4f169 4885 if (sreloc == NULL
65f38f15 4886 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4887 return FALSE;
5bd4f169 4888 }
65f38f15 4889 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4890 }
4891
65f38f15
AM		 4892 /* If this is a global symbol, we count the number of
4893 relocations we need for this symbol. */
4894 if (h != NULL)
4895 {
ec338859 4896 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4897 }
4898 else
4899 {
ec338859
AM		 4900 /* Track dynamic relocs needed for local syms too.
4901 We really need local syms available to do this
4902 easily. Oh well. */
4903
4904 asection *s;
6edfbbad
DJ		 4905 void *vpp;
4906
ec338859
AM		 4907 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4908 sec, r_symndx);
4909 if (s == NULL)
b34976b6 4910 return FALSE;
ec338859 4911
6edfbbad
DJ		 4912 vpp = &elf_section_data (s)->local_dynrel;
4913 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 4914 }
ec338859
AM		 4915
4916 p = *head;
4917 if (p == NULL || p->sec != sec)
4918 {
4ce794b7 4919 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4920 if (p == NULL)
b34976b6 4921 return FALSE;
ec338859
AM		 4922 p->next = *head;
4923 *head = p;
4924 p->sec = sec;
4925 p->count = 0;
4926 p->pc_count = 0;
4927 }
4928
4929 p->count += 1;
411e1bfb 4930 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4931 p->pc_count += 1;
65f38f15 4932 }
5bd4f169 4933 break;
65f38f15
AM		 4934
4935 default:
96e0dda4 4936 break;
5bd4f169
AM		 4937 }
4938 }
4939
b34976b6 4940 return TRUE;
5bd4f169
AM		 4941}
4942
8387904d
AM		 4943/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4944 of the code entry point, and its section. */
4945
4946static bfd_vma
4947opd_entry_value (asection *opd_sec,
4948 bfd_vma offset,
4949 asection **code_sec,
4950 bfd_vma *code_off)
4951{
4952 bfd *opd_bfd = opd_sec->owner;
8860955f 4953 Elf_Internal_Rela *relocs;
8387904d 4954 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4955 bfd_vma val;
8387904d 4956
4b85d634
AM		 4957 /* No relocs implies we are linking a --just-symbols object. */
4958 if (opd_sec->reloc_count == 0)
4959 {
4960 bfd_vma val;
4961
4962 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4963 return (bfd_vma) -1;
3b36f7e6 4964
4b85d634
AM		 4965 if (code_sec != NULL)
4966 {
4967 asection *sec, *likely = NULL;
4968 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4969 if (sec->vma <= val
4970 && (sec->flags & SEC_LOAD) != 0
4971 && (sec->flags & SEC_ALLOC) != 0)
4972 likely = sec;
4973 if (likely != NULL)
4974 {
4975 *code_sec = likely;
4976 if (code_off != NULL)
4977 *code_off = val - likely->vma;
4978 }
4979 }
4980 return val;
4981 }
4982
8860955f
AM		 4983 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4984 if (relocs == NULL)
4985 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4986
8387904d 4987 /* Go find the opd reloc at the sym address. */
8860955f 4988 lo = relocs;
8387904d
AM		 4989 BFD_ASSERT (lo != NULL);
4990 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4991 val = (bfd_vma) -1;
8387904d
AM		 4992 while (lo < hi)
4993 {
4994 look = lo + (hi - lo) / 2;
4995 if (look->r_offset < offset)
4996 lo = look + 1;
4997 else if (look->r_offset > offset)
4998 hi = look;
4999 else
5000 {
5001 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
5002 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5003 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5004 {
5005 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5006 asection *sec;
5007
5008 if (symndx < symtab_hdr->sh_info)
5009 {
5010 Elf_Internal_Sym *sym;
5011
5012 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5013 if (sym == NULL)
5014 {
5015 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5016 symtab_hdr->sh_info,
5017 0, NULL, NULL, NULL);
5018 if (sym == NULL)
645ea6a9 5019 break;
8387904d
AM		 5020 symtab_hdr->contents = (bfd_byte *) sym;
5021 }
5022
5023 sym += symndx;
5024 val = sym->st_value;
5025 sec = NULL;
5026 if ((sym->st_shndx != SHN_UNDEF
5027 && sym->st_shndx < SHN_LORESERVE)
5028 || sym->st_shndx > SHN_HIRESERVE)
5029 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5030 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5031 }
5032 else
5033 {
5034 struct elf_link_hash_entry **sym_hashes;
5035 struct elf_link_hash_entry *rh;
5036
5037 sym_hashes = elf_sym_hashes (opd_bfd);
5038 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5039 while (rh->root.type == bfd_link_hash_indirect
5040 || rh->root.type == bfd_link_hash_warning)
5041 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5042 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5043 || rh->root.type == bfd_link_hash_defweak);
5044 val = rh->root.u.def.value;
5045 sec = rh->root.u.def.section;
5046 }
5047 val += look->r_addend;
5048 if (code_off != NULL)
5049 *code_off = val;
5050 if (code_sec != NULL)
5051 *code_sec = sec;
5052 if (sec != NULL && sec->output_section != NULL)
5053 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 5054 }
5055 break;
5056 }
5057 }
645ea6a9 5058
645ea6a9 5059 return val;
8387904d
AM		 5060}
5061
64d03ab5
AM		 5062/* Mark sections containing dynamically referenced symbols. When
5063 building shared libraries, we must assume that any visible symbol is
5064 referenced. */
5065
5066static bfd_boolean
5067ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5068{
5069 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5070 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5071
5072 if (eh->elf.root.type == bfd_link_hash_warning)
5073 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5074
5075 /* Dynamic linking info is on the func descriptor sym. */
5076 if (eh->oh != NULL
5077 && eh->oh->is_func_descriptor
5078 && (eh->oh->elf.root.type == bfd_link_hash_defined
5079 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5080 eh = eh->oh;
5081
5082 if ((eh->elf.root.type == bfd_link_hash_defined
5083 || eh->elf.root.type == bfd_link_hash_defweak)
5084 && (eh->elf.ref_dynamic
5085 || (!info->executable
5086 && eh->elf.def_regular
5087 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5088 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5089 {
5090 asection *code_sec;
5091
5092 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5093
5094 /* Function descriptor syms cause the associated
5095 function code sym section to be marked. */
5096 if (eh->is_func_descriptor
5097 && (eh->oh->elf.root.type == bfd_link_hash_defined
5098 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5099 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5100 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5101 && opd_entry_value (eh->elf.root.u.def.section,
5102 eh->elf.root.u.def.value,
5103 &code_sec, NULL) != (bfd_vma) -1)
5104 code_sec->flags |= SEC_KEEP;
5105 }
5106
5107 return TRUE;
5108}
5109
5bd4f169
AM		 5110/* Return the section that should be marked against GC for a given
5111 relocation. */
5112
5113static asection *
4ce794b7 5114ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 5115 struct bfd_link_info *info,
4ce794b7
AM		 5116 Elf_Internal_Rela *rel,
5117 struct elf_link_hash_entry *h,
5118 Elf_Internal_Sym *sym)
5bd4f169 5119{
ccfa59ea
AM		 5120 asection *rsec;
5121
5122 /* First mark all our entry sym sections. */
5123 if (info->gc_sym_list != NULL)
5124 {
5125 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5126 struct bfd_sym_chain *sym = info->gc_sym_list;
5127
5128 info->gc_sym_list = NULL;
b56cbdb9 5129 for (; sym != NULL; sym = sym->next)
ccfa59ea
AM		 5130 {
5131 struct ppc_link_hash_entry *eh;
5132
5133 eh = (struct ppc_link_hash_entry *)
5134 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5135 if (eh == NULL)
5136 continue;
5137 if (eh->elf.root.type != bfd_link_hash_defined
5138 && eh->elf.root.type != bfd_link_hash_defweak)
5139 continue;
5140
c4f68ce3
AM		 5141 if (eh->is_func_descriptor
5142 && (eh->oh->elf.root.type == bfd_link_hash_defined
5143 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5144 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 5145 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5146 && opd_entry_value (eh->elf.root.u.def.section,
5147 eh->elf.root.u.def.value,
5148 &rsec, NULL) != (bfd_vma) -1)
5149 ;
ccfa59ea
AM		 5150 else
5151 continue;
5152
5153 if (!rsec->gc_mark)
5154 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5155
5156 rsec = eh->elf.root.u.def.section;
5157 if (!rsec->gc_mark)
5158 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
ccfa59ea 5159 }
ccfa59ea
AM		 5160 }
5161
5162 /* Syms return NULL if we're marking .opd, so we avoid marking all
5163 function sections, as all functions are referenced in .opd. */
5164 rsec = NULL;
5165 if (get_opd_info (sec) != NULL)
5166 return rsec;
1e2f5b6e 5167
5bd4f169
AM		 5168 if (h != NULL)
5169 {
04c9666a 5170 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5171 struct ppc_link_hash_entry *eh;
a33d1f77 5172
4ce794b7 5173 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5174 switch (r_type)
5bd4f169
AM		 5175 {
5176 case R_PPC64_GNU_VTINHERIT:
5177 case R_PPC64_GNU_VTENTRY:
5178 break;
5179
5180 default:
5181 switch (h->root.type)
5182 {
5183 case bfd_link_hash_defined:
5184 case bfd_link_hash_defweak:
ccfa59ea 5185 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5186 if (eh->oh != NULL
5187 && eh->oh->is_func_descriptor
5188 && (eh->oh->elf.root.type == bfd_link_hash_defined
5189 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5190 eh = eh->oh;
1e2f5b6e
AM		 5191
5192 /* Function descriptor syms cause the associated
5193 function code sym section to be marked. */
c4f68ce3
AM		 5194 if (eh->is_func_descriptor
5195 && (eh->oh->elf.root.type == bfd_link_hash_defined
5196 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5197 {
5198 /* They also mark their opd section. */
5199 if (!eh->elf.root.u.def.section->gc_mark)
5200 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5201 ppc64_elf_gc_mark_hook);
5202
5203 rsec = eh->oh->elf.root.u.def.section;
5204 }
8387904d
AM		 5205 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5206 && opd_entry_value (eh->elf.root.u.def.section,
5207 eh->elf.root.u.def.value,
5208 &rsec, NULL) != (bfd_vma) -1)
5209 {
5210 if (!eh->elf.root.u.def.section->gc_mark)
5211 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5212 ppc64_elf_gc_mark_hook);
5213 }
ccfa59ea 5214 else
1e2f5b6e
AM		 5215 rsec = h->root.u.def.section;
5216 break;
5bd4f169
AM		 5217
5218 case bfd_link_hash_common:
1e2f5b6e
AM		 5219 rsec = h->root.u.c.p->section;
5220 break;
5bd4f169
AM		 5221
5222 default:
5223 break;
5224 }
5225 }
5226 }
5227 else
5228 {
1e2f5b6e
AM		 5229 asection **opd_sym_section;
5230
5231 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5232 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5233 if (opd_sym_section != NULL)
ccfa59ea
AM		 5234 {
5235 if (!rsec->gc_mark)
5236 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5237
b4f4e59f 5238 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5239 }
5bd4f169
AM		 5240 }
5241
1e2f5b6e 5242 return rsec;
5bd4f169
AM		 5243}
5244
65f38f15
AM		 5245/* Update the .got, .plt. and dynamic reloc reference counts for the
5246 section being removed. */
5bd4f169 5247
b34976b6 5248static bfd_boolean
4ce794b7
AM		 5249ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5250 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5251{
411e1bfb 5252 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5253 Elf_Internal_Shdr *symtab_hdr;
5254 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5255 struct got_entry **local_got_ents;
5bd4f169 5256 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5257
680a3378
AM		 5258 if ((sec->flags & SEC_ALLOC) == 0)
5259 return TRUE;
5260
ec338859
AM		 5261 elf_section_data (sec)->local_dynrel = NULL;
5262
411e1bfb 5263 htab = ppc_hash_table (info);
5bd4f169
AM		 5264 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5265 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5266 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5267
5268 relend = relocs + sec->reloc_count;
5269 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5270 {
5271 unsigned long r_symndx;
04c9666a 5272 enum elf_ppc64_reloc_type r_type;
58ac9f71 5273 struct elf_link_hash_entry *h = NULL;
411e1bfb 5274 char tls_type = 0;
5bd4f169 5275
a33d1f77 5276 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5277 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5278 if (r_symndx >= symtab_hdr->sh_info)
5279 {
5280 struct ppc_link_hash_entry *eh;
5281 struct ppc_dyn_relocs **pp;
5282 struct ppc_dyn_relocs *p;
5283
5284 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5285 while (h->root.type == bfd_link_hash_indirect
5286 || h->root.type == bfd_link_hash_warning)
5287 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5288 eh = (struct ppc_link_hash_entry *) h;
5289
5290 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5291 if (p->sec == sec)
5292 {
5293 /* Everything must go for SEC. */
5294 *pp = p->next;
5295 break;
5296 }
5297 }
5298
a33d1f77
AM		 5299 switch (r_type)
5300 {
411e1bfb
AM		 5301 case R_PPC64_GOT_TLSLD16:
5302 case R_PPC64_GOT_TLSLD16_LO:
5303 case R_PPC64_GOT_TLSLD16_HI:
5304 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5305 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5306 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5307 goto dogot;
5308
5309 case R_PPC64_GOT_TLSGD16:
5310 case R_PPC64_GOT_TLSGD16_LO:
5311 case R_PPC64_GOT_TLSGD16_HI:
5312 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5313 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5314 goto dogot;
5315
5316 case R_PPC64_GOT_TPREL16_DS:
5317 case R_PPC64_GOT_TPREL16_LO_DS:
5318 case R_PPC64_GOT_TPREL16_HI:
5319 case R_PPC64_GOT_TPREL16_HA:
5320 tls_type = TLS_TLS | TLS_TPREL;
5321 goto dogot;
5322
5323 case R_PPC64_GOT_DTPREL16_DS:
5324 case R_PPC64_GOT_DTPREL16_LO_DS:
5325 case R_PPC64_GOT_DTPREL16_HI:
5326 case R_PPC64_GOT_DTPREL16_HA:
5327 tls_type = TLS_TLS | TLS_DTPREL;
5328 goto dogot;
5329
a33d1f77
AM		 5330 case R_PPC64_GOT16:
5331 case R_PPC64_GOT16_DS:
5332 case R_PPC64_GOT16_HA:
5333 case R_PPC64_GOT16_HI:
5334 case R_PPC64_GOT16_LO:
5335 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5336 dogot:
5337 {
5338 struct got_entry *ent;
5339
58ac9f71
AM		 5340 if (h != NULL)
5341 ent = h->got.glist;
411e1bfb
AM		 5342 else
5343 ent = local_got_ents[r_symndx];
5344
5345 for (; ent != NULL; ent = ent->next)
5346 if (ent->addend == rel->r_addend
e717da7e 5347 && ent->owner == abfd
411e1bfb
AM		 5348 && ent->tls_type == tls_type)
5349 break;
5350 if (ent == NULL)
5351 abort ();
5352 if (ent->got.refcount > 0)
5353 ent->got.refcount -= 1;
5354 }
a33d1f77 5355 break;
65f38f15 5356
a33d1f77
AM		 5357 case R_PPC64_PLT16_HA:
5358 case R_PPC64_PLT16_HI:
5359 case R_PPC64_PLT16_LO:
5360 case R_PPC64_PLT32:
5361 case R_PPC64_PLT64:
721956f4
AM		 5362 case R_PPC64_REL14:
5363 case R_PPC64_REL14_BRNTAKEN:
5364 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5365 case R_PPC64_REL24:
58ac9f71 5366 if (h != NULL)
5d1634d7 5367 {
411e1bfb
AM		 5368 struct plt_entry *ent;
5369
411e1bfb
AM		 5370 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5371 if (ent->addend == rel->r_addend)
5372 break;
5373 if (ent == NULL)
5374 abort ();
5375 if (ent->plt.refcount > 0)
5376 ent->plt.refcount -= 1;
5d1634d7 5377 }
e86ce104 5378 break;
5d1634d7 5379
a33d1f77
AM		 5380 default:
5381 break;
5382 }
5383 }
b34976b6 5384 return TRUE;
5bd4f169
AM		 5385}
5386
deb0e272
AM		 5387/* The maximum size of .sfpr. */
5388#define SFPR_MAX (218*4)
5389
5390struct sfpr_def_parms
5391{
699733f6
AM		 5392 const char name[12];
5393 unsigned char lo, hi;
deb0e272
AM		 5394 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5395 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5396};
5397
5398/* Auto-generate _save*, _rest* functions in .sfpr. */
5399
5400static unsigned int
5401sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5402{
5403 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5404 unsigned int i;
5405 size_t len = strlen (parm->name);
5406 bfd_boolean writing = FALSE;
699733f6 5407 char sym[16];
deb0e272
AM		 5408
5409 memcpy (sym, parm->name, len);
5410 sym[len + 2] = 0;
5411
5412 for (i = parm->lo; i <= parm->hi; i++)
5413 {
5414 struct elf_link_hash_entry *h;
5415
5416 sym[len + 0] = i / 10 + '0';
5417 sym[len + 1] = i % 10 + '0';
5418 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5419 if (h != NULL
f5385ebf 5420 && !h->def_regular)
deb0e272
AM		 5421 {
5422 h->root.type = bfd_link_hash_defined;
5423 h->root.u.def.section = htab->sfpr;
5424 h->root.u.def.value = htab->sfpr->size;
5425 h->type = STT_FUNC;
f5385ebf 5426 h->def_regular = 1;
deb0e272
AM		 5427 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5428 writing = TRUE;
5429 if (htab->sfpr->contents == NULL)
5430 {
5431 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5432 if (htab->sfpr->contents == NULL)
5433 return FALSE;
5434 }
5435 }
5436 if (writing)
5437 {
5438 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5439 if (i != parm->hi)
5440 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5441 else
5442 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5443 htab->sfpr->size = p - htab->sfpr->contents;
5444 }
5445 }
5446
5447 return TRUE;
5448}
5449
5450static bfd_byte *
5451savegpr0 (bfd *abfd, bfd_byte *p, int r)
5452{
5453 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5454 return p + 4;
5455}
5456
5457static bfd_byte *
5458savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5459{
5460 p = savegpr0 (abfd, p, r);
5461 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5462 p = p + 4;
5463 bfd_put_32 (abfd, BLR, p);
5464 return p + 4;
5465}
5466
5467static bfd_byte *
5468restgpr0 (bfd *abfd, bfd_byte *p, int r)
5469{
5470 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5471 return p + 4;
5472}
5473
5474static bfd_byte *
5475restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5476{
5477 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5478 p = p + 4;
5479 p = restgpr0 (abfd, p, r);
5480 bfd_put_32 (abfd, MTLR_R0, p);
5481 p = p + 4;
5482 if (r == 29)
5483 {
5484 p = restgpr0 (abfd, p, 30);
5485 p = restgpr0 (abfd, p, 31);
5486 }
5487 bfd_put_32 (abfd, BLR, p);
5488 return p + 4;
5489}
5490
5491static bfd_byte *
5492savegpr1 (bfd *abfd, bfd_byte *p, int r)
5493{
5494 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5495 return p + 4;
5496}
5497
5498static bfd_byte *
5499savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5500{
5501 p = savegpr1 (abfd, p, r);
5502 bfd_put_32 (abfd, BLR, p);
5503 return p + 4;
5504}
5505
5506static bfd_byte *
5507restgpr1 (bfd *abfd, bfd_byte *p, int r)
5508{
5509 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5510 return p + 4;
5511}
5512
5513static bfd_byte *
5514restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5515{
5516 p = restgpr1 (abfd, p, r);
5517 bfd_put_32 (abfd, BLR, p);
5518 return p + 4;
5519}
5520
5521static bfd_byte *
5522savefpr (bfd *abfd, bfd_byte *p, int r)
5523{
5524 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5525 return p + 4;
5526}
5527
5528static bfd_byte *
5529savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5530{
5531 p = savefpr (abfd, p, r);
5532 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5533 p = p + 4;
5534 bfd_put_32 (abfd, BLR, p);
5535 return p + 4;
5536}
5537
5538static bfd_byte *
5539restfpr (bfd *abfd, bfd_byte *p, int r)
5540{
5541 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5542 return p + 4;
5543}
5544
5545static bfd_byte *
5546restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5547{
5548 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5549 p = p + 4;
5550 p = restfpr (abfd, p, r);
5551 bfd_put_32 (abfd, MTLR_R0, p);
5552 p = p + 4;
5553 if (r == 29)
5554 {
5555 p = restfpr (abfd, p, 30);
5556 p = restfpr (abfd, p, 31);
5557 }
5558 bfd_put_32 (abfd, BLR, p);
5559 return p + 4;
5560}
5561
5562static bfd_byte *
5563savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5564{
5565 p = savefpr (abfd, p, r);
5566 bfd_put_32 (abfd, BLR, p);
5567 return p + 4;
5568}
5569
5570static bfd_byte *
5571restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5572{
5573 p = restfpr (abfd, p, r);
5574 bfd_put_32 (abfd, BLR, p);
5575 return p + 4;
5576}
5577
5578static bfd_byte *
5579savevr (bfd *abfd, bfd_byte *p, int r)
5580{
5581 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5582 p = p + 4;
5583 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5584 return p + 4;
5585}
5586
5587static bfd_byte *
5588savevr_tail (bfd *abfd, bfd_byte *p, int r)
5589{
5590 p = savevr (abfd, p, r);
5591 bfd_put_32 (abfd, BLR, p);
5592 return p + 4;
5593}
5594
5595static bfd_byte *
5596restvr (bfd *abfd, bfd_byte *p, int r)
5597{
5598 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5599 p = p + 4;
5600 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5601 return p + 4;
5602}
5603
5604static bfd_byte *
5605restvr_tail (bfd *abfd, bfd_byte *p, int r)
5606{
5607 p = restvr (abfd, p, r);
5608 bfd_put_32 (abfd, BLR, p);
5609 return p + 4;
5610}
5611
e86ce104
AM		 5612/* Called via elf_link_hash_traverse to transfer dynamic linking
5613 information on function code symbol entries to their corresponding
5614 function descriptor symbol entries. */
deb0e272 5615
b34976b6 5616static bfd_boolean
4ce794b7 5617func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5618{
e86ce104 5619 struct bfd_link_info *info;
65f38f15 5620 struct ppc_link_hash_table *htab;
411e1bfb 5621 struct plt_entry *ent;
50bc7936
AM		 5622 struct ppc_link_hash_entry *fh;
5623 struct ppc_link_hash_entry *fdh;
5624 bfd_boolean force_local;
5bd4f169 5625
50bc7936
AM		 5626 fh = (struct ppc_link_hash_entry *) h;
5627 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5628 return TRUE;
e86ce104 5629
50bc7936
AM		 5630 if (fh->elf.root.type == bfd_link_hash_warning)
5631 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5632
4ce794b7 5633 info = inf;
65f38f15 5634 htab = ppc_hash_table (info);
5bd4f169 5635
c09bdfe5
AM		 5636 /* Resolve undefined references to dot-symbols as the value
5637 in the function descriptor, if we have one in a regular object.
5638 This is to satisfy cases like ".quad .foo". Calls to functions
5639 in dynamic objects are handled elsewhere. */
5640 if (fh->elf.root.type == bfd_link_hash_undefweak
5641 && fh->was_undefined
5642 && (fh->oh->elf.root.type == bfd_link_hash_defined
5643 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5644 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5645 && opd_entry_value (fh->oh->elf.root.u.def.section,
5646 fh->oh->elf.root.u.def.value,
5647 &fh->elf.root.u.def.section,
5648 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5649 {
5650 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5651 fh->elf.forced_local = 1;
c09bdfe5
AM		 5652 }
5653
e86ce104
AM		 5654 /* If this is a function code symbol, transfer dynamic linking
5655 information to the function descriptor symbol. */
50bc7936 5656 if (!fh->is_func)
b34976b6 5657 return TRUE;
e86ce104 5658
50bc7936 5659 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5660 if (ent->plt.refcount > 0)
5661 break;
50bc7936
AM		 5662 if (ent == NULL
5663 || fh->elf.root.root.string[0] != '.'
5664 || fh->elf.root.root.string[1] == '\0')
5665 return TRUE;
5bd4f169 5666
50bc7936
AM		 5667 /* Find the corresponding function descriptor symbol. Create it
5668 as undefined if necessary. */
5bd4f169 5669
50bc7936
AM		 5670 fdh = get_fdh (fh, htab);
5671 if (fdh != NULL)
5672 while (fdh->elf.root.type == bfd_link_hash_indirect
5673 || fdh->elf.root.type == bfd_link_hash_warning)
5674 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5675
50bc7936
AM		 5676 if (fdh == NULL
5677 && info->shared
5678 && (fh->elf.root.type == bfd_link_hash_undefined
5679 || fh->elf.root.type == bfd_link_hash_undefweak))
5680 {
908b32fc 5681 fdh = make_fdh (info, fh);
bb700d78
AM		 5682 if (fdh == NULL)
5683 return FALSE;
50bc7936 5684 }
648cca2c 5685
908b32fc 5686 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5687 code symbol is strong undefined, make the fake sym the same.
5688 If the function code symbol is defined, then force the fake
5689 descriptor local; We can't support overriding of symbols in a
5690 shared library on a fake descriptor. */
908b32fc
AM		 5691
5692 if (fdh != NULL
5693 && fdh->fake
433817dd 5694 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5695 {
433817dd
AM		 5696 if (fh->elf.root.type == bfd_link_hash_undefined)
5697 {
5698 fdh->elf.root.type = bfd_link_hash_undefined;
5699 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5700 }
5701 else if (fh->elf.root.type == bfd_link_hash_defined
5702 || fh->elf.root.type == bfd_link_hash_defweak)
5703 {
5704 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5705 }
908b32fc
AM		 5706 }
5707
50bc7936 5708 if (fdh != NULL
f5385ebf 5709 && !fdh->elf.forced_local
50bc7936 5710 && (info->shared
f5385ebf
AM		 5711 || fdh->elf.def_dynamic
5712 || fdh->elf.ref_dynamic
50bc7936
AM		 5713 || (fdh->elf.root.type == bfd_link_hash_undefweak
5714 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5715 {
5716 if (fdh->elf.dynindx == -1)
c152c796 5717 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5718 return FALSE;
f5385ebf
AM		 5719 fdh->elf.ref_regular |= fh->elf.ref_regular;
5720 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5721 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5722 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5723 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5724 {
40d16e0b 5725 move_plt_plist (fh, fdh);
f5385ebf 5726 fdh->elf.needs_plt = 1;
e86ce104 5727 }
50bc7936 5728 fdh->is_func_descriptor = 1;
34814b9f
AM		 5729 fdh->oh = fh;
5730 fh->oh = fdh;
e86ce104
AM		 5731 }
5732
50bc7936
AM		 5733 /* Now that the info is on the function descriptor, clear the
5734 function code sym info. Any function code syms for which we
5735 don't have a definition in a regular file, we force local.
5736 This prevents a shared library from exporting syms that have
5737 been imported from another library. Function code syms that
5738 are really in the library we must leave global to prevent the
5739 linker dragging in a definition from a static library. */
93f3fa99
AM		 5740 force_local = (!fh->elf.def_regular
5741 || fdh == NULL
5742 || !fdh->elf.def_regular
5743 || fdh->elf.forced_local);
50bc7936
AM		 5744 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5745
b34976b6 5746 return TRUE;
e86ce104 5747}
40b8271b 5748
e86ce104 5749/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5750 this hook to a) provide some gcc support functions, and b) transfer
5751 dynamic linking information gathered so far on function code symbol
5752 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5753
b34976b6 5754static bfd_boolean
4ce794b7
AM		 5755ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5756 struct bfd_link_info *info)
e86ce104
AM		 5757{
5758 struct ppc_link_hash_table *htab;
82bd7b59 5759 unsigned int i;
deb0e272
AM		 5760 const struct sfpr_def_parms funcs[] =
5761 {
5762 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5763 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5764 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5765 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5766 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5767 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5768 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5769 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5770 { "._savef", 14, 31, savefpr, savefpr1_tail },
5771 { "._restf", 14, 31, restfpr, restfpr1_tail },
5772 { "_savevr_", 20, 31, savevr, savevr_tail },
5773 { "_restvr_", 20, 31, restvr, restvr_tail }
5774 };
e86ce104
AM		 5775
5776 htab = ppc_hash_table (info);
82bd7b59
AM		 5777 if (htab->sfpr == NULL)
5778 /* We don't have any relocs. */
b34976b6 5779 return TRUE;
82bd7b59 5780
deb0e272
AM		 5781 /* Provide any missing _save* and _rest* functions. */
5782 htab->sfpr->size = 0;
5783 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5784 if (!sfpr_define (info, &funcs[i]))
5785 return FALSE;
82bd7b59 5786
4ce794b7 5787 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5788
eea6121a 5789 if (htab->sfpr->size == 0)
8423293d 5790 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5791
b34976b6 5792 return TRUE;
e86ce104
AM		 5793}
5794
5795/* Adjust a symbol defined by a dynamic object and referenced by a
5796 regular object. The current definition is in some section of the
5797 dynamic object, but we're not including those sections. We have to
5798 change the definition to something the rest of the link can
5799 understand. */
5800
b34976b6 5801static bfd_boolean
4ce794b7
AM		 5802ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5803 struct elf_link_hash_entry *h)
e86ce104
AM		 5804{
5805 struct ppc_link_hash_table *htab;
e86ce104
AM		 5806 asection *s;
5807 unsigned int power_of_two;
5808
5809 htab = ppc_hash_table (info);
5810
5811 /* Deal with function syms. */
5812 if (h->type == STT_FUNC
f5385ebf 5813 || h->needs_plt)
e86ce104
AM		 5814 {
5815 /* Clear procedure linkage table information for any symbol that
5816 won't need a .plt entry. */
411e1bfb
AM		 5817 struct plt_entry *ent;
5818 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5819 if (ent->plt.refcount > 0)
5820 break;
8387904d 5821 if (ent == NULL
9c7a29a3
AM		 5822 || SYMBOL_CALLS_LOCAL (info, h)
5823 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5824 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5825 {
411e1bfb 5826 h->plt.plist = NULL;
f5385ebf 5827 h->needs_plt = 0;
40b8271b 5828 }
5bd4f169 5829 }
bbd7ec4a 5830 else
411e1bfb 5831 h->plt.plist = NULL;
5bd4f169
AM		 5832
5833 /* If this is a weak symbol, and there is a real definition, the
5834 processor independent code will have arranged for us to see the
5835 real definition first, and we can just use the same value. */
f6e332e6 5836 if (h->u.weakdef != NULL)
5bd4f169 5837 {
f6e332e6
AM		 5838 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5839 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5840 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5841 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5842 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5843 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5844 return TRUE;
5bd4f169
AM		 5845 }
5846
5bd4f169
AM		 5847 /* If we are creating a shared library, we must presume that the
5848 only references to the symbol are via the global offset table.
5849 For such cases we need not do anything here; the relocations will
5850 be handled correctly by relocate_section. */
5851 if (info->shared)
b34976b6 5852 return TRUE;
5bd4f169 5853
65f38f15
AM		 5854 /* If there are no references to this symbol that do not use the
5855 GOT, we don't need to generate a copy reloc. */
f5385ebf 5856 if (!h->non_got_ref)
b34976b6 5857 return TRUE;
65f38f15 5858
f4656909 5859 if (ELIMINATE_COPY_RELOCS)
65f38f15 5860 {
f4656909
AM		 5861 struct ppc_link_hash_entry * eh;
5862 struct ppc_dyn_relocs *p;
65f38f15 5863
f4656909
AM		 5864 eh = (struct ppc_link_hash_entry *) h;
5865 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5866 {
5867 s = p->sec->output_section;
5868 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5869 break;
5870 }
5871
5872 /* If we didn't find any dynamic relocs in read-only sections, then
5873 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5874 if (p == NULL)
5875 {
f5385ebf 5876 h->non_got_ref = 0;
f4656909
AM		 5877 return TRUE;
5878 }
65f38f15
AM		 5879 }
5880
5d35169e 5881 if (h->plt.plist != NULL)
97b639ba
AM		 5882 {
5883 /* We should never get here, but unfortunately there are versions
5884 of gcc out there that improperly (for this ABI) put initialized
5885 function pointers, vtable refs and suchlike in read-only
5886 sections. Allow them to proceed, but warn that this might
5887 break at runtime. */
5888 (*_bfd_error_handler)
5889 (_("copy reloc against `%s' requires lazy plt linking; "
5890 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5891 h->root.root.string);
5892 }
5d35169e
AM		 5893
5894 /* This is a reference to a symbol defined by a dynamic object which
5895 is not a function. */
5896
909272ee
AM		 5897 if (h->size == 0)
5898 {
5899 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5900 h->root.root.string);
5901 return TRUE;
5902 }
5903
5bd4f169
AM		 5904 /* We must allocate the symbol in our .dynbss section, which will
5905 become part of the .bss section of the executable. There will be
5906 an entry for this symbol in the .dynsym section. The dynamic
5907 object will contain position independent code, so all references
5908 from the dynamic object to this symbol will go through the global
5909 offset table. The dynamic linker will use the .dynsym entry to
5910 determine the address it must put in the global offset table, so
5911 both the dynamic object and the regular object will refer to the
5912 same memory location for the variable. */
5bd4f169 5913
04c9666a
AM		 5914 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5915 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5916 runtime process image. We need to remember the offset into the
5917 .rela.bss section we are going to use. */
5918 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5919 {
eea6121a 5920 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5921 h->needs_copy = 1;
5bd4f169
AM		 5922 }
5923
5924 /* We need to figure out the alignment required for this symbol. I
5925 have no idea how ELF linkers handle this. */
5926 power_of_two = bfd_log2 (h->size);
5927 if (power_of_two > 4)
5928 power_of_two = 4;
5929
5930 /* Apply the required alignment. */
4ce794b7 5931 s = htab->dynbss;
eea6121a 5932 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5933 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5934 {
65f38f15 5935 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5936 return FALSE;
5bd4f169
AM		 5937 }
5938
5939 /* Define the symbol as being at this point in the section. */
5940 h->root.u.def.section = s;
eea6121a 5941 h->root.u.def.value = s->size;
5bd4f169
AM		 5942
5943 /* Increment the section size to make room for the symbol. */
eea6121a 5944 s->size += h->size;
5bd4f169 5945
b34976b6 5946 return TRUE;
5bd4f169
AM		 5947}
5948
e86ce104
AM		 5949/* If given a function descriptor symbol, hide both the function code
5950 sym and the descriptor. */
5951static void
4ce794b7
AM		 5952ppc64_elf_hide_symbol (struct bfd_link_info *info,
5953 struct elf_link_hash_entry *h,
5954 bfd_boolean force_local)
e86ce104 5955{
34814b9f 5956 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5957 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5958
34814b9f
AM		 5959 eh = (struct ppc_link_hash_entry *) h;
5960 if (eh->is_func_descriptor)
e86ce104 5961 {
34814b9f 5962 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5963
721956f4 5964 if (fh == NULL)
d1329ca3
AM		 5965 {
5966 const char *p, *q;
5967 struct ppc_link_hash_table *htab;
5968 char save;
5969
5970 /* We aren't supposed to use alloca in BFD because on
5971 systems which do not have alloca the version in libiberty
5972 calls xmalloc, which might cause the program to crash
5973 when it runs out of memory. This function doesn't have a
5974 return status, so there's no way to gracefully return an
5975 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5976 accessed; It's either a string in an ELF string table,
5977 or allocated in an objalloc structure. */
d1329ca3 5978
34814b9f 5979 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5980 save = *p;
5981 *(char *) p = '.';
5982 htab = ppc_hash_table (info);
34814b9f
AM		 5983 fh = (struct ppc_link_hash_entry *)
5984 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5985 *(char *) p = save;
5986
5987 /* Unfortunately, if it so happens that the string we were
5988 looking for was allocated immediately before this string,
5989 then we overwrote the string terminator. That's the only
5990 reason the lookup should fail. */
5991 if (fh == NULL)
5992 {
34814b9f
AM		 5993 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5994 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5995 --q, --p;
34814b9f
AM		 5996 if (q < eh->elf.root.root.string && *p == '.')
5997 fh = (struct ppc_link_hash_entry *)
5998 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5999 }
6000 if (fh != NULL)
6001 {
34814b9f
AM		 6002 eh->oh = fh;
6003 fh->oh = eh;
d1329ca3
AM		 6004 }
6005 }
e86ce104 6006 if (fh != NULL)
34814b9f 6007 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 6008 }
6009}
6010
411e1bfb 6011static bfd_boolean
8843416a
AM		 6012get_sym_h (struct elf_link_hash_entry **hp,
6013 Elf_Internal_Sym **symp,
6014 asection **symsecp,
6015 char **tls_maskp,
6016 Elf_Internal_Sym **locsymsp,
6017 unsigned long r_symndx,
6018 bfd *ibfd)
411e1bfb
AM		 6019{
6020 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6021
6022 if (r_symndx >= symtab_hdr->sh_info)
6023 {
6024 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6025 struct elf_link_hash_entry *h;
6026
6027 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6028 while (h->root.type == bfd_link_hash_indirect
6029 || h->root.type == bfd_link_hash_warning)
6030 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6031
6032 if (hp != NULL)
6033 *hp = h;
6034
6035 if (symp != NULL)
6036 *symp = NULL;
6037
6038 if (symsecp != NULL)
6039 {
6040 asection *symsec = NULL;
6041 if (h->root.type == bfd_link_hash_defined
6042 || h->root.type == bfd_link_hash_defweak)
6043 symsec = h->root.u.def.section;
6044 *symsecp = symsec;
6045 }
6046
e7b938ca 6047 if (tls_maskp != NULL)
411e1bfb
AM		 6048 {
6049 struct ppc_link_hash_entry *eh;
6050
6051 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6052 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 6053 }
6054 }
6055 else
6056 {
6057 Elf_Internal_Sym *sym;
6058 Elf_Internal_Sym *locsyms = *locsymsp;
6059
6060 if (locsyms == NULL)
6061 {
6062 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6063 if (locsyms == NULL)
6064 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6065 symtab_hdr->sh_info,
6066 0, NULL, NULL, NULL);
6067 if (locsyms == NULL)
6068 return FALSE;
6069 *locsymsp = locsyms;
6070 }
6071 sym = locsyms + r_symndx;
6072
6073 if (hp != NULL)
6074 *hp = NULL;
6075
6076 if (symp != NULL)
6077 *symp = sym;
6078
6079 if (symsecp != NULL)
6080 {
6081 asection *symsec = NULL;
6082 if ((sym->st_shndx != SHN_UNDEF
6083 && sym->st_shndx < SHN_LORESERVE)
6084 || sym->st_shndx > SHN_HIRESERVE)
6085 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6086 *symsecp = symsec;
6087 }
6088
e7b938ca 6089 if (tls_maskp != NULL)
411e1bfb
AM		 6090 {
6091 struct got_entry **lgot_ents;
e7b938ca 6092 char *tls_mask;
411e1bfb 6093
e7b938ca 6094 tls_mask = NULL;
411e1bfb
AM		 6095 lgot_ents = elf_local_got_ents (ibfd);
6096 if (lgot_ents != NULL)
6097 {
e7b938ca
AM		 6098 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6099 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6100 }
e7b938ca 6101 *tls_maskp = tls_mask;
411e1bfb
AM		 6102 }
6103 }
6104 return TRUE;
6105}
6106
e7b938ca 6107/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6108 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6109 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 6110
6111static int
0d4792f7
AM		 6112get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6113 Elf_Internal_Sym **locsymsp,
4ce794b7 6114 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 6115{
6116 unsigned long r_symndx;
0d4792f7 6117 int next_r;
411e1bfb
AM		 6118 struct elf_link_hash_entry *h;
6119 Elf_Internal_Sym *sym;
6120 asection *sec;
6121 bfd_vma off;
6122
6123 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6124 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6125 return 0;
411e1bfb 6126
e7b938ca 6127 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6128 || sec == NULL
7c8fe5c4 6129 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6130 return 1;
411e1bfb
AM		 6131
6132 /* Look inside a TOC section too. */
6133 if (h != NULL)
6134 {
6135 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6136 off = h->root.u.def.value;
6137 }
6138 else
6139 off = sym->st_value;
6140 off += rel->r_addend;
6141 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM		 6142 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6143 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6144 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6145 return 0;
0d4792f7
AM		 6146 if (toc_symndx != NULL)
6147 *toc_symndx = r_symndx;
6148 if ((h == NULL
6149 || ((h->root.type == bfd_link_hash_defined
6150 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6151 && !h->def_dynamic))
0d4792f7
AM		 6152 && (next_r == -1 || next_r == -2))
6153 return 1 - next_r;
951fd09b 6154 return 1;
411e1bfb
AM		 6155}
6156
754021d0 6157/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6158 code for the old ABI, these will already have been done. */
754021d0
AM		 6159
6160static bfd_boolean
6161adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6162{
6163 struct ppc_link_hash_entry *eh;
6164 asection *sym_sec;
6165 long *opd_adjust;
6166
6167 if (h->root.type == bfd_link_hash_indirect)
6168 return TRUE;
6169
6170 if (h->root.type == bfd_link_hash_warning)
6171 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6172
6173 if (h->root.type != bfd_link_hash_defined
6174 && h->root.type != bfd_link_hash_defweak)
6175 return TRUE;
6176
6177 eh = (struct ppc_link_hash_entry *) h;
6178 if (eh->adjust_done)
6179 return TRUE;
6180
6181 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 6182 opd_adjust = get_opd_info (sym_sec);
6183 if (opd_adjust != NULL)
754021d0 6184 {
3f764659 6185 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6186 if (adjust == -1)
6187 {
6188 /* This entry has been deleted. */
b3fac117 6189 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 6190 if (dsec == NULL)
6191 {
6192 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6193 if (elf_discarded_section (dsec))
6194 {
b3fac117 6195 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 6196 break;
6197 }
6198 }
4025353c 6199 eh->elf.root.u.def.value = 0;
81688140 6200 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6201 }
6202 else
6203 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6204 eh->adjust_done = 1;
6205 }
6206 return TRUE;
6207}
6208
8c1d1bb8
AM		 6209/* Handles decrementing dynamic reloc counts for the reloc specified by
6210 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6211 have already been determined. */
6212
6213static bfd_boolean
6214dec_dynrel_count (bfd_vma r_info,
6215 asection *sec,
6216 struct bfd_link_info *info,
6217 Elf_Internal_Sym **local_syms,
6218 struct elf_link_hash_entry *h,
6219 asection *sym_sec)
6220{
6221 enum elf_ppc64_reloc_type r_type;
6222 struct ppc_dyn_relocs *p;
6223 struct ppc_dyn_relocs **pp;
6224
6225 /* Can this reloc be dynamic? This switch, and later tests here
6226 should be kept in sync with the code in check_relocs. */
6227 r_type = ELF64_R_TYPE (r_info);
6228 switch (r_type)
6229 {
6230 default:
6231 return TRUE;
6232
6233 case R_PPC64_TPREL16:
6234 case R_PPC64_TPREL16_LO:
6235 case R_PPC64_TPREL16_HI:
6236 case R_PPC64_TPREL16_HA:
6237 case R_PPC64_TPREL16_DS:
6238 case R_PPC64_TPREL16_LO_DS:
6239 case R_PPC64_TPREL16_HIGHER:
6240 case R_PPC64_TPREL16_HIGHERA:
6241 case R_PPC64_TPREL16_HIGHEST:
6242 case R_PPC64_TPREL16_HIGHESTA:
6243 if (!info->shared)
6244 return TRUE;
6245
6246 case R_PPC64_TPREL64:
6247 case R_PPC64_DTPMOD64:
6248 case R_PPC64_DTPREL64:
6249 case R_PPC64_ADDR64:
6250 case R_PPC64_REL30:
6251 case R_PPC64_REL32:
6252 case R_PPC64_REL64:
6253 case R_PPC64_ADDR14:
6254 case R_PPC64_ADDR14_BRNTAKEN:
6255 case R_PPC64_ADDR14_BRTAKEN:
6256 case R_PPC64_ADDR16:
6257 case R_PPC64_ADDR16_DS:
6258 case R_PPC64_ADDR16_HA:
6259 case R_PPC64_ADDR16_HI:
6260 case R_PPC64_ADDR16_HIGHER:
6261 case R_PPC64_ADDR16_HIGHERA:
6262 case R_PPC64_ADDR16_HIGHEST:
6263 case R_PPC64_ADDR16_HIGHESTA:
6264 case R_PPC64_ADDR16_LO:
6265 case R_PPC64_ADDR16_LO_DS:
6266 case R_PPC64_ADDR24:
6267 case R_PPC64_ADDR32:
6268 case R_PPC64_UADDR16:
6269 case R_PPC64_UADDR32:
6270 case R_PPC64_UADDR64:
6271 case R_PPC64_TOC:
6272 break;
6273 }
6274
6275 if (local_syms != NULL)
6276 {
6277 unsigned long r_symndx;
6278 Elf_Internal_Sym *sym;
6279 bfd *ibfd = sec->owner;
6280
6281 r_symndx = ELF64_R_SYM (r_info);
6282 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6283 return FALSE;
6284 }
6285
6286 if ((info->shared
6287 && (MUST_BE_DYN_RELOC (r_type)
6288 || (h != NULL
6289 && (!info->symbolic
6290 || h->root.type == bfd_link_hash_defweak
6291 || !h->def_regular))))
6292 || (ELIMINATE_COPY_RELOCS
6293 && !info->shared
6294 && h != NULL
6295 && (h->root.type == bfd_link_hash_defweak
6296 || !h->def_regular)))
6297 ;
6298 else
6299 return TRUE;
6300
6301 if (h != NULL)
6302 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6303 else
6edfbbad 6304 {
60124e18
AM		 6305 if (sym_sec != NULL)
6306 {
6307 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6308 pp = (struct ppc_dyn_relocs **) vpp;
6309 }
6310 else
6311 {
6312 void *vpp = &elf_section_data (sec)->local_dynrel;
6313 pp = (struct ppc_dyn_relocs **) vpp;
6314 }
6315
6316 /* elf_gc_sweep may have already removed all dyn relocs associated
6317 with local syms for a given section. Don't report a dynreloc
6318 miscount. */
6319 if (*pp == NULL)
6320 return TRUE;
6edfbbad 6321 }
8c1d1bb8
AM		 6322
6323 while ((p = *pp) != NULL)
6324 {
6325 if (p->sec == sec)
6326 {
6327 if (!MUST_BE_DYN_RELOC (r_type))
6328 p->pc_count -= 1;
6329 p->count -= 1;
6330 if (p->count == 0)
6331 *pp = p->next;
6332 return TRUE;
6333 }
6334 pp = &p->next;
6335 }
6336
6337 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6338 sec->owner, sec);
6339 bfd_set_error (bfd_error_bad_value);
6340 return FALSE;
6341}
6342
754021d0
AM		 6343/* Remove unused Official Procedure Descriptor entries. Currently we
6344 only remove those associated with functions in discarded link-once
6345 sections, or weakly defined functions that have been overridden. It
6346 would be possible to remove many more entries for statically linked
6347 applications. */
6348
b34976b6 6349bfd_boolean
3f764659 6350ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6351 bfd_boolean no_opd_opt,
3f764659 6352 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6353{
6354 bfd *ibfd;
754021d0 6355 bfd_boolean some_edited = FALSE;
3f764659 6356 asection *need_pad = NULL;
1e2f5b6e 6357
411e1bfb 6358 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6359 {
6360 asection *sec;
6361 Elf_Internal_Rela *relstart, *rel, *relend;
6362 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6363 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6364 struct elf_link_hash_entry **sym_hashes;
6365 bfd_vma offset;
d6fe2dc1 6366 bfd_size_type amt;
4025353c 6367 long *opd_adjust;
3f764659
JJ		 6368 bfd_boolean need_edit, add_aux_fields;
6369 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6370
6371 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6372 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6373 continue;
6374
3f764659 6375 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6376 opd_adjust = get_opd_info (sec);
6377 if (opd_adjust == NULL)
d6fe2dc1 6378 {
4b85d634
AM		 6379 /* check_relocs hasn't been called. Must be a ld -r link
6380 or --just-symbols object. */
b4f4e59f 6381 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM		 6382 if (opd_adjust == NULL)
6383 return FALSE;
7c8fe5c4
AM		 6384 ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust;
6385 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
6386 ppc64_elf_section_data (sec)->sec_type = sec_opd;
d6fe2dc1 6387 }
4025353c 6388 memset (opd_adjust, 0, amt);
1e2f5b6e 6389
b4f4e59f
AM		 6390 if (no_opd_opt)
6391 continue;
6392
4b85d634
AM		 6393 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6394 continue;
6395
1e2f5b6e
AM		 6396 if (sec->output_section == bfd_abs_section_ptr)
6397 continue;
6398
6399 /* Look through the section relocs. */
6400 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6401 continue;
6402
6cdc0ccc 6403 local_syms = NULL;
1e2f5b6e
AM		 6404 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6405 sym_hashes = elf_sym_hashes (ibfd);
6406
6407 /* Read the relocations. */
4ce794b7 6408 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6409 info->keep_memory);
1e2f5b6e 6410 if (relstart == NULL)
b34976b6 6411 return FALSE;
1e2f5b6e
AM		 6412
6413 /* First run through the relocs to check they are sane, and to
6414 determine whether we need to edit this opd section. */
b34976b6 6415 need_edit = FALSE;
3f764659 6416 need_pad = sec;
1e2f5b6e
AM		 6417 offset = 0;
6418 relend = relstart + sec->reloc_count;
50bc7936 6419 for (rel = relstart; rel < relend; )
1e2f5b6e 6420 {
04c9666a 6421 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6422 unsigned long r_symndx;
6423 asection *sym_sec;
6424 struct elf_link_hash_entry *h;
6425 Elf_Internal_Sym *sym;
6426
3f764659 6427 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6428 only interested in the reloc pointing to a function entry
6429 point. */
50bc7936
AM		 6430 if (rel->r_offset != offset
6431 || rel + 1 >= relend
6432 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6433 {
6434 /* If someone messes with .opd alignment then after a
6435 "ld -r" we might have padding in the middle of .opd.
6436 Also, there's nothing to prevent someone putting
6437 something silly in .opd with the assembler. No .opd
b34976b6 6438 optimization for them! */
3f764659 6439 broken_opd:
1e2f5b6e 6440 (*_bfd_error_handler)
d003868e 6441 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6442 need_edit = FALSE;
1e2f5b6e
AM		 6443 break;
6444 }
6445
50bc7936
AM		 6446 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6447 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6448 {
6449 (*_bfd_error_handler)
d003868e
AM		 6450 (_("%B: unexpected reloc type %u in .opd section"),
6451 ibfd, r_type);
50bc7936
AM		 6452 need_edit = FALSE;
6453 break;
6454 }
6455
1e2f5b6e 6456 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6457 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6458 r_symndx, ibfd))
50bc7936 6459 goto error_ret;
1e2f5b6e
AM		 6460
6461 if (sym_sec == NULL || sym_sec->owner == NULL)
6462 {
411e1bfb
AM		 6463 const char *sym_name;
6464 if (h != NULL)
6465 sym_name = h->root.root.string;
6466 else
26c61ae5
L		 6467 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6468 sym_sec);
411e1bfb 6469
1e2f5b6e 6470 (*_bfd_error_handler)
d003868e
AM		 6471 (_("%B: undefined sym `%s' in .opd section"),
6472 ibfd, sym_name);
b34976b6 6473 need_edit = FALSE;
1e2f5b6e
AM		 6474 break;
6475 }
6476
51020317
AM		 6477 /* opd entries are always for functions defined in the
6478 current input bfd. If the symbol isn't defined in the
6479 input bfd, then we won't be using the function in this
6480 bfd; It must be defined in a linkonce section in another
6481 bfd, or is weak. It's also possible that we are
6482 discarding the function due to a linker script /DISCARD/,
6483 which we test for via the output_section. */
6484 if (sym_sec->owner != ibfd
6485 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6486 need_edit = TRUE;
1e2f5b6e 6487
50bc7936 6488 rel += 2;
3f764659
JJ		 6489 if (rel == relend
6490 || (rel + 1 == relend && rel->r_offset == offset + 16))
6491 {
6492 if (sec->size == offset + 24)
6493 {
6494 need_pad = NULL;
6495 break;
6496 }
6497 if (rel == relend && sec->size == offset + 16)
6498 {
6499 cnt_16b++;
6500 break;
6501 }
6502 goto broken_opd;
6503 }
6504
6505 if (rel->r_offset == offset + 24)
6506 offset += 24;
6507 else if (rel->r_offset != offset + 16)
6508 goto broken_opd;
6509 else if (rel + 1 < relend
6510 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6511 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6512 {
6513 offset += 16;
6514 cnt_16b++;
6515 }
6516 else if (rel + 2 < relend
6517 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6518 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6519 {
6520 offset += 24;
6521 rel += 1;
6522 }
6523 else
6524 goto broken_opd;
1e2f5b6e
AM		 6525 }
6526
3f764659
JJ		 6527 add_aux_fields = non_overlapping && cnt_16b > 0;
6528
6529 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6530 {
6531 Elf_Internal_Rela *write_rel;
6532 bfd_byte *rptr, *wptr;
3f764659 6533 bfd_byte *new_contents = NULL;
b34976b6 6534 bfd_boolean skip;
3f764659 6535 long opd_ent_size;
1e2f5b6e
AM		 6536
6537 /* This seems a waste of time as input .opd sections are all
6538 zeros as generated by gcc, but I suppose there's no reason
6539 this will always be so. We might start putting something in
6540 the third word of .opd entries. */
6541 if ((sec->flags & SEC_IN_MEMORY) == 0)
6542 {
eea6121a
AM		 6543 bfd_byte *loc;
6544 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6545 {
eea6121a
AM		 6546 if (loc != NULL)
6547 free (loc);
50bc7936 6548 error_ret:
6cdc0ccc
AM		 6549 if (local_syms != NULL
6550 && symtab_hdr->contents != (unsigned char *) local_syms)
6551 free (local_syms);
6cdc0ccc
AM		 6552 if (elf_section_data (sec)->relocs != relstart)
6553 free (relstart);
b34976b6 6554 return FALSE;
6cdc0ccc 6555 }
1e2f5b6e
AM		 6556 sec->contents = loc;
6557 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6558 }
6559
6560 elf_section_data (sec)->relocs = relstart;
6561
3f764659 6562 new_contents = sec->contents;
3f764659
JJ		 6563 if (add_aux_fields)
6564 {
6565 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6566 if (new_contents == NULL)
6567 return FALSE;
6568 need_pad = FALSE;
3f764659 6569 }
b4f4e59f
AM		 6570 wptr = new_contents;
6571 rptr = sec->contents;
3f764659 6572
1e2f5b6e 6573 write_rel = relstart;
b34976b6 6574 skip = FALSE;
1e2f5b6e 6575 offset = 0;
3f764659 6576 opd_ent_size = 0;
1e2f5b6e
AM		 6577 for (rel = relstart; rel < relend; rel++)
6578 {
50bc7936
AM		 6579 unsigned long r_symndx;
6580 asection *sym_sec;
6581 struct elf_link_hash_entry *h;
6582 Elf_Internal_Sym *sym;
6583
6584 r_symndx = ELF64_R_SYM (rel->r_info);
6585 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6586 r_symndx, ibfd))
50bc7936
AM		 6587 goto error_ret;
6588
1e2f5b6e
AM		 6589 if (rel->r_offset == offset)
6590 {
50bc7936 6591 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6592
6593 /* See if the .opd entry is full 24 byte or
6594 16 byte (with fd_aux entry overlapped with next
6595 fd_func). */
6596 opd_ent_size = 24;
6597 if ((rel + 2 == relend && sec->size == offset + 16)
6598 || (rel + 3 < relend
6599 && rel[2].r_offset == offset + 16
6600 && rel[3].r_offset == offset + 24
6601 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6602 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6603 opd_ent_size = 16;
6604
4025353c
AM		 6605 if (h != NULL
6606 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6607 {
6608 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6609 ppc_hash_table (info));
6610 if (fdh != NULL
6611 && fdh->elf.root.type != bfd_link_hash_defined
6612 && fdh->elf.root.type != bfd_link_hash_defweak)
6613 fdh = NULL;
6614 }
1e2f5b6e 6615
51020317
AM		 6616 skip = (sym_sec->owner != ibfd
6617 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6618 if (skip)
6619 {
4025353c 6620 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6621 {
6622 /* Arrange for the function descriptor sym
6623 to be dropped. */
d6fe2dc1
AM		 6624 fdh->elf.root.u.def.value = 0;
6625 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6626 }
3f764659 6627 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6628 }
6629 else
1e2f5b6e
AM		 6630 {
6631 /* We'll be keeping this opd entry. */
6632
4025353c 6633 if (fdh != NULL)
1e2f5b6e 6634 {
754021d0
AM		 6635 /* Redefine the function descriptor symbol to
6636 this location in the opd section. It is
6637 necessary to update the value here rather
6638 than using an array of adjustments as we do
6639 for local symbols, because various places
6640 in the generic ELF code use the value
6641 stored in u.def.value. */
3f764659 6642 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6643 fdh->adjust_done = 1;
1e2f5b6e 6644 }
754021d0
AM		 6645
6646 /* Local syms are a bit tricky. We could
6647 tweak them as they can be cached, but
6648 we'd need to look through the local syms
6649 for the function descriptor sym which we
6650 don't have at the moment. So keep an
6651 array of adjustments. */
3f764659
JJ		 6652 opd_adjust[rel->r_offset / 8]
6653 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6654
6655 if (wptr != rptr)
3f764659
JJ		 6656 memcpy (wptr, rptr, opd_ent_size);
6657 wptr += opd_ent_size;
6658 if (add_aux_fields && opd_ent_size == 16)
6659 {
6660 memset (wptr, '\0', 8);
6661 wptr += 8;
6662 }
1e2f5b6e 6663 }
3f764659
JJ		 6664 rptr += opd_ent_size;
6665 offset += opd_ent_size;
1e2f5b6e
AM		 6666 }
6667
50bc7936
AM		 6668 if (skip)
6669 {
60124e18
AM		 6670 if (!NO_OPD_RELOCS
6671 && !info->relocatable
18d944df
AM		 6672 && !dec_dynrel_count (rel->r_info, sec, info,
6673 NULL, h, sym_sec))
8c1d1bb8 6674 goto error_ret;
50bc7936
AM		 6675 }
6676 else
1e2f5b6e 6677 {
50bc7936
AM		 6678 /* We need to adjust any reloc offsets to point to the
6679 new opd entries. While we're at it, we may as well
6680 remove redundant relocs. */
3f764659 6681 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6682 if (write_rel != rel)
6683 memcpy (write_rel, rel, sizeof (*rel));
6684 ++write_rel;
6685 }
6686 }
6687
3f764659 6688 sec->size = wptr - new_contents;
1e2f5b6e 6689 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6690 if (add_aux_fields)
6691 {
6692 free (sec->contents);
6693 sec->contents = new_contents;
6694 }
6695
05bf9422 6696 /* Fudge the header size too, as this is used later in
cdcf6e38
AM		 6697 elf_bfd_final_link if we are emitting relocs. */
6698 elf_section_data (sec)->rel_hdr.sh_size
6699 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6700 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6701 some_edited = TRUE;
1e2f5b6e 6702 }
6cdc0ccc 6703 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6704 free (relstart);
6cdc0ccc 6705
411e1bfb
AM		 6706 if (local_syms != NULL
6707 && symtab_hdr->contents != (unsigned char *) local_syms)
6708 {
6709 if (!info->keep_memory)
6710 free (local_syms);
6711 else
6712 symtab_hdr->contents = (unsigned char *) local_syms;
6713 }
6714 }
6715
754021d0
AM		 6716 if (some_edited)
6717 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6718
3f764659
JJ		 6719 /* If we are doing a final link and the last .opd entry is just 16 byte
6720 long, add a 8 byte padding after it. */
6721 if (need_pad != NULL && !info->relocatable)
6722 {
6723 bfd_byte *p;
6724
6725 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6726 {
6727 BFD_ASSERT (need_pad->size > 0);
6728
6729 p = bfd_malloc (need_pad->size + 8);
6730 if (p == NULL)
6731 return FALSE;
699733f6 6732
3f764659
JJ		 6733 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6734 p, 0, need_pad->size))
6735 return FALSE;
6736
6737 need_pad->contents = p;
6738 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6739 }
6740 else
6741 {
6742 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6743 if (p == NULL)
6744 return FALSE;
6745
6746 need_pad->contents = p;
6747 }
6748
6749 memset (need_pad->contents + need_pad->size, 0, 8);
6750 need_pad->size += 8;
6751 }
6752
411e1bfb
AM		 6753 return TRUE;
6754}
6755
e1918d23 6756/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6757
e1918d23 6758asection *
4ce794b7 6759ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6760{
411e1bfb
AM		 6761 struct ppc_link_hash_table *htab;
6762
411e1bfb 6763 htab = ppc_hash_table (info);
a48ebf4d
AM		 6764 if (htab->tls_get_addr != NULL)
6765 {
8387904d 6766 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6767
8387904d
AM		 6768 while (h->elf.root.type == bfd_link_hash_indirect
6769 || h->elf.root.type == bfd_link_hash_warning)
6770 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6771
6772 htab->tls_get_addr = h;
8387904d
AM		 6773
6774 if (htab->tls_get_addr_fd == NULL
6775 && h->oh != NULL
c4f68ce3
AM		 6776 && h->oh->is_func_descriptor
6777 && (h->oh->elf.root.type == bfd_link_hash_defined
6778 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6779 htab->tls_get_addr_fd = h->oh;
6780 }
6781
6782 if (htab->tls_get_addr_fd != NULL)
6783 {
6784 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6785
6786 while (h->elf.root.type == bfd_link_hash_indirect
6787 || h->elf.root.type == bfd_link_hash_warning)
6788 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6789
6790 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6791 }
6792
e1918d23 6793 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6794}
411e1bfb 6795
951fd09b
AM		 6796/* Run through all the TLS relocs looking for optimization
6797 opportunities. The linker has been hacked (see ppc64elf.em) to do
6798 a preliminary section layout so that we know the TLS segment
6799 offsets. We can't optimize earlier because some optimizations need
6800 to know the tp offset, and we need to optimize before allocating
6801 dynamic relocations. */
6802
6803bfd_boolean
4ce794b7 6804ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6805{
6806 bfd *ibfd;
6807 asection *sec;
6808 struct ppc_link_hash_table *htab;
6809
1049f94e 6810 if (info->relocatable || info->shared)
411e1bfb
AM		 6811 return TRUE;
6812
951fd09b 6813 htab = ppc_hash_table (info);
411e1bfb
AM		 6814 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6815 {
6816 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM		 6817 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6818 unsigned char *toc_ref = NULL;
411e1bfb 6819
30038c59
AM		 6820 /* Look at all the sections for this file, with TOC last. */
6821 for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next
6822 : ibfd->sections);
6823 sec != NULL;
6824 sec = (sec == toc ? NULL
6825 : sec->next == NULL ? toc
6826 : sec->next == toc && toc->next ? toc->next
6827 : sec->next))
411e1bfb
AM		 6828 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6829 {
6830 Elf_Internal_Rela *relstart, *rel, *relend;
6831 int expecting_tls_get_addr;
30038c59 6832 long toc_ref_index = 0;
411e1bfb
AM		 6833
6834 /* Read the relocations. */
4ce794b7 6835 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6836 info->keep_memory);
411e1bfb
AM		 6837 if (relstart == NULL)
6838 return FALSE;
6839
6840 expecting_tls_get_addr = 0;
6841 relend = relstart + sec->reloc_count;
6842 for (rel = relstart; rel < relend; rel++)
6843 {
6844 enum elf_ppc64_reloc_type r_type;
6845 unsigned long r_symndx;
6846 struct elf_link_hash_entry *h;
6847 Elf_Internal_Sym *sym;
6848 asection *sym_sec;
e7b938ca
AM		 6849 char *tls_mask;
6850 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6851 bfd_vma value;
951fd09b 6852 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6853
6854 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6855 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6856 r_symndx, ibfd))
6857 {
6858 err_free_rel:
6859 if (elf_section_data (sec)->relocs != relstart)
6860 free (relstart);
30038c59
AM		 6861 if (toc_ref != NULL)
6862 free (toc_ref);
411e1bfb
AM		 6863 if (locsyms != NULL
6864 && (elf_tdata (ibfd)->symtab_hdr.contents
6865 != (unsigned char *) locsyms))
6866 free (locsyms);
6867 return FALSE;
6868 }
6869
6870 if (h != NULL)
6871 {
6872 if (h->root.type != bfd_link_hash_defined
6873 && h->root.type != bfd_link_hash_defweak)
6874 continue;
6875 value = h->root.u.def.value;
6876 }
6877 else
4025353c
AM		 6878 /* Symbols referenced by TLS relocs must be of type
6879 STT_TLS. So no need for .opd local sym adjust. */
6880 value = sym->st_value;
951fd09b 6881
411e1bfb 6882 ok_tprel = FALSE;
951fd09b
AM		 6883 is_local = FALSE;
6884 if (h == NULL
f5385ebf 6885 || !h->def_dynamic)
411e1bfb 6886 {
951fd09b 6887 is_local = TRUE;
411e1bfb
AM		 6888 value += sym_sec->output_offset;
6889 value += sym_sec->output_section->vma;
e1918d23 6890 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6891 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6892 < (bfd_vma) 1 << 32);
6893 }
6894
4ce794b7 6895 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6896 switch (r_type)
6897 {
6898 case R_PPC64_GOT_TLSLD16:
6899 case R_PPC64_GOT_TLSLD16_LO:
6900 case R_PPC64_GOT_TLSLD16_HI:
6901 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6902 /* These relocs should never be against a symbol
6903 defined in a shared lib. Leave them alone if
6904 that turns out to be the case. */
e717da7e 6905 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6906 if (!is_local)
6907 continue;
6908
951fd09b
AM		 6909 /* LD -> LE */
6910 tls_set = 0;
6911 tls_clear = TLS_LD;
e7b938ca 6912 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6913 expecting_tls_get_addr = 1;
6914 break;
6915
6916 case R_PPC64_GOT_TLSGD16:
6917 case R_PPC64_GOT_TLSGD16_LO:
6918 case R_PPC64_GOT_TLSGD16_HI:
6919 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6920 if (ok_tprel)
411e1bfb
AM		 6921 /* GD -> LE */
6922 tls_set = 0;
6923 else
6924 /* GD -> IE */
951fd09b
AM		 6925 tls_set = TLS_TLS | TLS_TPRELGD;
6926 tls_clear = TLS_GD;
e7b938ca 6927 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6928 expecting_tls_get_addr = 1;
6929 break;
6930
6931 case R_PPC64_GOT_TPREL16_DS:
6932 case R_PPC64_GOT_TPREL16_LO_DS:
6933 case R_PPC64_GOT_TPREL16_HI:
6934 case R_PPC64_GOT_TPREL16_HA:
6935 expecting_tls_get_addr = 0;
6936 if (ok_tprel)
6937 {
6938 /* IE -> LE */
6939 tls_set = 0;
6940 tls_clear = TLS_TPREL;
e7b938ca 6941 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6942 break;
6943 }
6944 else
6945 continue;
6946
6947 case R_PPC64_REL14:
6948 case R_PPC64_REL14_BRTAKEN:
6949 case R_PPC64_REL14_BRNTAKEN:
6950 case R_PPC64_REL24:
6951 if (h != NULL
8387904d
AM		 6952 && (h == &htab->tls_get_addr->elf
6953 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6954 {
6955 if (!expecting_tls_get_addr
6956 && rel != relstart
6957 && ((ELF64_R_TYPE (rel[-1].r_info)
6958 == R_PPC64_TOC16)
6959 || (ELF64_R_TYPE (rel[-1].r_info)
6960 == R_PPC64_TOC16_LO)))
6961 {
6962 /* Check for toc tls entries. */
6963 char *toc_tls;
951fd09b 6964 int retval;
411e1bfb 6965
0d4792f7 6966 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6967 rel - 1, ibfd);
6968 if (retval == 0)
411e1bfb 6969 goto err_free_rel;
30038c59
AM		 6970 if (retval > 1 && toc_tls != NULL)
6971 {
6972 expecting_tls_get_addr = 1;
6973 if (toc_ref != NULL)
6974 toc_ref[toc_ref_index] = 1;
6975 }
411e1bfb
AM		 6976 }
6977
6978 if (expecting_tls_get_addr)
6979 {
6980 struct plt_entry *ent;
6981 for (ent = h->plt.plist; ent; ent = ent->next)
6982 if (ent->addend == 0)
6983 {
6984 if (ent->plt.refcount > 0)
6985 ent->plt.refcount -= 1;
6986 break;
6987 }
6988 }
6989 }
6990 expecting_tls_get_addr = 0;
6991 continue;
6992
30038c59
AM		 6993 case R_PPC64_TOC16:
6994 case R_PPC64_TOC16_LO:
6995 case R_PPC64_TLS:
6996 expecting_tls_get_addr = 0;
6997 if (sym_sec == toc && toc != NULL)
6998 {
6999 /* Mark this toc entry as referenced by a TLS
7000 code sequence. We can do that now in the
7001 case of R_PPC64_TLS, and after checking for
7002 tls_get_addr for the TOC16 relocs. */
7003 if (toc_ref == NULL)
7004 {
7005 toc_ref = bfd_zmalloc (toc->size / 8);
7006 if (toc_ref == NULL)
7007 goto err_free_rel;
7008 }
7009 if (h != NULL)
7010 value = h->root.u.def.value;
7011 else
7012 value = sym->st_value;
7013 value += rel->r_addend;
7014 BFD_ASSERT (value < toc->size && value % 8 == 0);
7015 toc_ref_index = value / 8;
7016 if (r_type == R_PPC64_TLS)
7017 toc_ref[toc_ref_index] = 1;
7018 }
7019 continue;
7020
411e1bfb
AM		 7021 case R_PPC64_TPREL64:
7022 expecting_tls_get_addr = 0;
30038c59
AM		 7023 if (sec != toc
7024 || toc_ref == NULL
7025 || !toc_ref[rel->r_offset / 8])
7026 continue;
411e1bfb
AM		 7027 if (ok_tprel)
7028 {
7029 /* IE -> LE */
7030 tls_set = TLS_EXPLICIT;
7031 tls_clear = TLS_TPREL;
7032 break;
7033 }
7034 else
7035 continue;
7036
7037 case R_PPC64_DTPMOD64:
7038 expecting_tls_get_addr = 0;
30038c59
AM		 7039 if (sec != toc
7040 || toc_ref == NULL
7041 || !toc_ref[rel->r_offset / 8])
7042 continue;
951fd09b
AM		 7043 if (rel + 1 < relend
7044 && (rel[1].r_info
7045 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7046 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 7047 {
951fd09b 7048 if (ok_tprel)
411e1bfb 7049 /* GD -> LE */
951fd09b 7050 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 7051 else
7052 /* GD -> IE */
951fd09b
AM		 7053 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7054 tls_clear = TLS_GD;
411e1bfb
AM		 7055 }
7056 else
7057 {
951fd09b
AM		 7058 if (!is_local)
7059 continue;
7060
7061 /* LD -> LE */
7062 tls_set = TLS_EXPLICIT;
7063 tls_clear = TLS_LD;
411e1bfb
AM		 7064 }
7065 break;
7066
7067 default:
7068 expecting_tls_get_addr = 0;
7069 continue;
7070 }
7071
7072 if ((tls_set & TLS_EXPLICIT) == 0)
7073 {
7074 struct got_entry *ent;
7075
7076 /* Adjust got entry for this reloc. */
7077 if (h != NULL)
7078 ent = h->got.glist;
7079 else
7080 ent = elf_local_got_ents (ibfd)[r_symndx];
7081
7082 for (; ent != NULL; ent = ent->next)
7083 if (ent->addend == rel->r_addend
e717da7e 7084 && ent->owner == ibfd
e7b938ca 7085 && ent->tls_type == tls_type)
411e1bfb
AM		 7086 break;
7087 if (ent == NULL)
7088 abort ();
7089
7090 if (tls_set == 0)
7091 {
7092 /* We managed to get rid of a got entry. */
7093 if (ent->got.refcount > 0)
7094 ent->got.refcount -= 1;
7095 }
411e1bfb 7096 }
8c1d1bb8 7097 else
411e1bfb 7098 {
8c1d1bb8
AM		 7099 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7100 we'll lose one or two dyn relocs. */
7101 if (!dec_dynrel_count (rel->r_info, sec, info,
7102 NULL, h, sym_sec))
7103 return FALSE;
7104
7105 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7106 {
7107 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7108 NULL, h, sym_sec))
7109 return FALSE;
7110 }
411e1bfb
AM		 7111 }
7112
e7b938ca
AM		 7113 *tls_mask |= tls_set;
7114 *tls_mask &= ~tls_clear;
411e1bfb
AM		 7115 }
7116
7117 if (elf_section_data (sec)->relocs != relstart)
7118 free (relstart);
7119 }
7120
30038c59
AM		 7121 if (toc_ref != NULL)
7122 free (toc_ref);
7123
411e1bfb
AM		 7124 if (locsyms != NULL
7125 && (elf_tdata (ibfd)->symtab_hdr.contents
7126 != (unsigned char *) locsyms))
6cdc0ccc
AM		 7127 {
7128 if (!info->keep_memory)
411e1bfb 7129 free (locsyms);
6cdc0ccc 7130 else
411e1bfb 7131 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 7132 }
1e2f5b6e 7133 }
b34976b6 7134 return TRUE;
1e2f5b6e 7135}
b34976b6 7136
c5614fa4
AM		 7137/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7138 the values of any global symbols in a toc section that has been
7139 edited. Globals in toc sections should be a rarity, so this function
7140 sets a flag if any are found in toc sections other than the one just
7141 edited, so that futher hash table traversals can be avoided. */
7142
7143struct adjust_toc_info
7144{
7145 asection *toc;
7146 unsigned long *skip;
7147 bfd_boolean global_toc_syms;
7148};
7149
7150static bfd_boolean
7151adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7152{
7153 struct ppc_link_hash_entry *eh;
7154 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7155
7156 if (h->root.type == bfd_link_hash_indirect)
7157 return TRUE;
7158
7159 if (h->root.type == bfd_link_hash_warning)
7160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7161
7162 if (h->root.type != bfd_link_hash_defined
7163 && h->root.type != bfd_link_hash_defweak)
7164 return TRUE;
7165
7166 eh = (struct ppc_link_hash_entry *) h;
7167 if (eh->adjust_done)
7168 return TRUE;
7169
7170 if (eh->elf.root.u.def.section == toc_inf->toc)
7171 {
7172 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7173 if (skip != (unsigned long) -1)
7174 eh->elf.root.u.def.value -= skip;
7175 else
7176 {
7177 (*_bfd_error_handler)
7178 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7179 eh->elf.root.u.def.section = &bfd_abs_section;
7180 eh->elf.root.u.def.value = 0;
7181 }
7182 eh->adjust_done = 1;
7183 }
7184 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7185 toc_inf->global_toc_syms = TRUE;
7186
7187 return TRUE;
7188}
7189
7190/* Examine all relocs referencing .toc sections in order to remove
7191 unused .toc entries. */
7192
7193bfd_boolean
7194ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7195{
7196 bfd *ibfd;
7197 struct adjust_toc_info toc_inf;
7198
7199 toc_inf.global_toc_syms = TRUE;
7200 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7201 {
7202 asection *toc, *sec;
7203 Elf_Internal_Shdr *symtab_hdr;
7204 Elf_Internal_Sym *local_syms;
7205 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7206 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 7207 unsigned long *skip, *drop;
7208 unsigned char *used;
7209 unsigned char *keep, last, some_unused;
7210
7211 toc = bfd_get_section_by_name (ibfd, ".toc");
7212 if (toc == NULL
92b7a70f 7213 || toc->size == 0
c5614fa4
AM		 7214 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7215 || elf_discarded_section (toc))
7216 continue;
7217
7218 local_syms = NULL;
7219 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7220 sym_hashes = elf_sym_hashes (ibfd);
7221
7222 /* Look at sections dropped from the final link. */
7223 skip = NULL;
7224 relstart = NULL;
7225 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7226 {
7227 if (sec->reloc_count == 0
7228 || !elf_discarded_section (sec)
7229 || get_opd_info (sec)
7230 || (sec->flags & SEC_ALLOC) == 0
7231 || (sec->flags & SEC_DEBUGGING) != 0)
7232 continue;
7233
7234 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7235 if (relstart == NULL)
7236 goto error_ret;
7237
7238 /* Run through the relocs to see which toc entries might be
7239 unused. */
7240 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7241 {
7242 enum elf_ppc64_reloc_type r_type;
7243 unsigned long r_symndx;
7244 asection *sym_sec;
7245 struct elf_link_hash_entry *h;
7246 Elf_Internal_Sym *sym;
7247 bfd_vma val;
7248
7249 r_type = ELF64_R_TYPE (rel->r_info);
7250 switch (r_type)
7251 {
7252 default:
7253 continue;
7254
7255 case R_PPC64_TOC16:
7256 case R_PPC64_TOC16_LO:
7257 case R_PPC64_TOC16_HI:
7258 case R_PPC64_TOC16_HA:
7259 case R_PPC64_TOC16_DS:
7260 case R_PPC64_TOC16_LO_DS:
7261 break;
7262 }
7263
7264 r_symndx = ELF64_R_SYM (rel->r_info);
7265 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7266 r_symndx, ibfd))
7267 goto error_ret;
7268
7269 if (sym_sec != toc)
7270 continue;
7271
7272 if (h != NULL)
7273 val = h->root.u.def.value;
7274 else
7275 val = sym->st_value;
7276 val += rel->r_addend;
7277
7278 if (val >= toc->size)
7279 continue;
7280
7281 /* Anything in the toc ought to be aligned to 8 bytes.
7282 If not, don't mark as unused. */
7283 if (val & 7)
7284 continue;
7285
7286 if (skip == NULL)
7287 {
7288 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7289 if (skip == NULL)
7290 goto error_ret;
7291 }
7292
7293 skip[val >> 3] = 1;
7294 }
7295
7296 if (elf_section_data (sec)->relocs != relstart)
7297 free (relstart);
7298 }
7299
7300 if (skip == NULL)
7301 continue;
7302
7303 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7304 if (used == NULL)
7305 {
7306 error_ret:
7307 if (local_syms != NULL
7308 && symtab_hdr->contents != (unsigned char *) local_syms)
7309 free (local_syms);
7310 if (sec != NULL
7311 && relstart != NULL
7312 && elf_section_data (sec)->relocs != relstart)
7313 free (relstart);
7314 if (skip != NULL)
7315 free (skip);
7316 return FALSE;
7317 }
7318
30038c59
AM		 7319 /* Now check all kept sections that might reference the toc.
7320 Check the toc itself last. */
7321 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7322 : ibfd->sections);
c5614fa4 7323 sec != NULL;
c5614fa4 7324 sec = (sec == toc ? NULL
c5614fa4 7325 : sec->next == NULL ? toc
30038c59 7326 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 7327 : sec->next))
7328 {
7329 int repeat;
7330
7331 if (sec->reloc_count == 0
7332 || elf_discarded_section (sec)
7333 || get_opd_info (sec)
7334 || (sec->flags & SEC_ALLOC) == 0
7335 || (sec->flags & SEC_DEBUGGING) != 0)
7336 continue;
7337
7338 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7339 if (relstart == NULL)
7340 goto error_ret;
7341
7342 /* Mark toc entries referenced as used. */
7343 repeat = 0;
7344 do
7345 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7346 {
7347 enum elf_ppc64_reloc_type r_type;
7348 unsigned long r_symndx;
7349 asection *sym_sec;
7350 struct elf_link_hash_entry *h;
7351 Elf_Internal_Sym *sym;
7352 bfd_vma val;
7353
7354 r_type = ELF64_R_TYPE (rel->r_info);
7355 switch (r_type)
7356 {
7357 case R_PPC64_TOC16:
7358 case R_PPC64_TOC16_LO:
7359 case R_PPC64_TOC16_HI:
7360 case R_PPC64_TOC16_HA:
7361 case R_PPC64_TOC16_DS:
7362 case R_PPC64_TOC16_LO_DS:
7363 /* In case we're taking addresses of toc entries. */
7364 case R_PPC64_ADDR64:
7365 break;
7366
7367 default:
7368 continue;
7369 }
7370
7371 r_symndx = ELF64_R_SYM (rel->r_info);
7372 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7373 r_symndx, ibfd))
7374 {
7375 free (used);
7376 goto error_ret;
7377 }
7378
7379 if (sym_sec != toc)
7380 continue;
7381
7382 if (h != NULL)
7383 val = h->root.u.def.value;
7384 else
7385 val = sym->st_value;
7386 val += rel->r_addend;
7387
7388 if (val >= toc->size)
7389 continue;
7390
7391 /* For the toc section, we only mark as used if
7392 this entry itself isn't unused. */
7393 if (sec == toc
7394 && !used[val >> 3]
7395 && (used[rel->r_offset >> 3]
7396 || !skip[rel->r_offset >> 3]))
7397 /* Do all the relocs again, to catch reference
7398 chains. */
7399 repeat = 1;
7400
7401 used[val >> 3] = 1;
7402 }
7403 while (repeat);
7404 }
7405
7406 /* Merge the used and skip arrays. Assume that TOC
7407 doublewords not appearing as either used or unused belong
7408 to to an entry more than one doubleword in size. */
7409 for (drop = skip, keep = used, last = 0, some_unused = 0;
7410 drop < skip + (toc->size + 7) / 8;
7411 ++drop, ++keep)
7412 {
7413 if (*keep)
7414 {
7415 *drop = 0;
7416 last = 0;
7417 }
7418 else if (*drop)
7419 {
7420 some_unused = 1;
7421 last = 1;
7422 }
7423 else
7424 *drop = last;
7425 }
7426
7427 free (used);
7428
7429 if (some_unused)
7430 {
7431 bfd_byte *contents, *src;
7432 unsigned long off;
7433
7434 /* Shuffle the toc contents, and at the same time convert the
7435 skip array from booleans into offsets. */
7436 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7437 goto error_ret;
7438
7439 elf_section_data (toc)->this_hdr.contents = contents;
7440
7441 for (src = contents, off = 0, drop = skip;
7442 src < contents + toc->size;
7443 src += 8, ++drop)
7444 {
7445 if (*drop)
7446 {
7447 *drop = (unsigned long) -1;
7448 off += 8;
7449 }
7450 else if (off != 0)
7451 {
7452 *drop = off;
7453 memcpy (src - off, src, 8);
7454 }
7455 }
7456 toc->rawsize = toc->size;
7457 toc->size = src - contents - off;
7458
92b7a70f
AM		 7459 if (toc->reloc_count != 0)
7460 {
7461 Elf_Internal_Rela *wrel;
7462 bfd_size_type sz;
c5614fa4 7463
92b7a70f
AM		 7464 /* Read toc relocs. */
7465 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7466 TRUE);
7467 if (relstart == NULL)
7468 goto error_ret;
7469
7470 /* Remove unused toc relocs, and adjust those we keep. */
7471 wrel = relstart;
7472 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7473 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7474 {
7475 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7476 wrel->r_info = rel->r_info;
7477 wrel->r_addend = rel->r_addend;
7478 ++wrel;
7479 }
8c1d1bb8
AM		 7480 else if (!dec_dynrel_count (rel->r_info, toc, info,
7481 &local_syms, NULL, NULL))
7482 goto error_ret;
35090471 7483
92b7a70f
AM		 7484 toc->reloc_count = wrel - relstart;
7485 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7486 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7487 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7488 }
c5614fa4
AM		 7489
7490 /* Adjust addends for relocs against the toc section sym. */
7491 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7492 {
7493 if (sec->reloc_count == 0
7494 || elf_discarded_section (sec))
7495 continue;
7496
7497 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7498 TRUE);
7499 if (relstart == NULL)
7500 goto error_ret;
7501
7502 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7503 {
7504 enum elf_ppc64_reloc_type r_type;
7505 unsigned long r_symndx;
7506 asection *sym_sec;
7507 struct elf_link_hash_entry *h;
7508 Elf_Internal_Sym *sym;
7509
7510 r_type = ELF64_R_TYPE (rel->r_info);
7511 switch (r_type)
7512 {
7513 default:
7514 continue;
7515
7516 case R_PPC64_TOC16:
7517 case R_PPC64_TOC16_LO:
7518 case R_PPC64_TOC16_HI:
7519 case R_PPC64_TOC16_HA:
7520 case R_PPC64_TOC16_DS:
7521 case R_PPC64_TOC16_LO_DS:
7522 case R_PPC64_ADDR64:
7523 break;
7524 }
7525
7526 r_symndx = ELF64_R_SYM (rel->r_info);
7527 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7528 r_symndx, ibfd))
7529 goto error_ret;
7530
7531 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7532 continue;
7533
7534 rel->r_addend -= skip[rel->r_addend >> 3];
7535 }
7536 }
7537
7538 /* We shouldn't have local or global symbols defined in the TOC,
7539 but handle them anyway. */
7540 if (local_syms != NULL)
7541 {
7542 Elf_Internal_Sym *sym;
7543
7544 for (sym = local_syms;
7545 sym < local_syms + symtab_hdr->sh_info;
7546 ++sym)
7547 if (sym->st_shndx != SHN_UNDEF
7548 && (sym->st_shndx < SHN_LORESERVE
7549 || sym->st_shndx > SHN_HIRESERVE)
7550 && sym->st_value != 0
7551 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7552 {
7553 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7554 sym->st_value -= skip[sym->st_value >> 3];
7555 else
7556 {
7557 (*_bfd_error_handler)
7558 (_("%s defined in removed toc entry"),
26c61ae5
L		 7559 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7560 NULL));
c5614fa4
AM		 7561 sym->st_value = 0;
7562 sym->st_shndx = SHN_ABS;
7563 }
7564 symtab_hdr->contents = (unsigned char *) local_syms;
7565 }
7566 }
7567
7568 /* Finally, adjust any global syms defined in the toc. */
7569 if (toc_inf.global_toc_syms)
7570 {
7571 toc_inf.toc = toc;
7572 toc_inf.skip = skip;
7573 toc_inf.global_toc_syms = FALSE;
7574 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7575 &toc_inf);
7576 }
7577 }
7578
7579 if (local_syms != NULL
7580 && symtab_hdr->contents != (unsigned char *) local_syms)
7581 {
7582 if (!info->keep_memory)
7583 free (local_syms);
7584 else
7585 symtab_hdr->contents = (unsigned char *) local_syms;
7586 }
7587 free (skip);
7588 }
7589
7590 return TRUE;
7591}
7592
65f38f15
AM		 7593/* Allocate space in .plt, .got and associated reloc sections for
7594 dynamic relocs. */
5bd4f169 7595
b34976b6 7596static bfd_boolean
4ce794b7 7597allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7598{
65f38f15
AM		 7599 struct bfd_link_info *info;
7600 struct ppc_link_hash_table *htab;
5bd4f169 7601 asection *s;
65f38f15
AM		 7602 struct ppc_link_hash_entry *eh;
7603 struct ppc_dyn_relocs *p;
411e1bfb 7604 struct got_entry *gent;
5bd4f169 7605
e92d460e 7606 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7607 return TRUE;
5bd4f169 7608
e92d460e
AM		 7609 if (h->root.type == bfd_link_hash_warning)
7610 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7611
65f38f15
AM		 7612 info = (struct bfd_link_info *) inf;
7613 htab = ppc_hash_table (info);
5bd4f169 7614
65f38f15 7615 if (htab->elf.dynamic_sections_created
411e1bfb 7616 && h->dynindx != -1
9c7a29a3 7617 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7618 {
411e1bfb
AM		 7619 struct plt_entry *pent;
7620 bfd_boolean doneone = FALSE;
7621 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7622 if (pent->plt.refcount > 0)
7623 {
411e1bfb
AM		 7624 /* If this is the first .plt entry, make room for the special
7625 first entry. */
4ce794b7 7626 s = htab->plt;
eea6121a
AM		 7627 if (s->size == 0)
7628 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7629
eea6121a 7630 pent->plt.offset = s->size;
411e1bfb
AM		 7631
7632 /* Make room for this entry. */
eea6121a 7633 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7634
7635 /* Make room for the .glink code. */
4ce794b7 7636 s = htab->glink;
eea6121a
AM		 7637 if (s->size == 0)
7638 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7639 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7640 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7641 s->size += 4;
7642 s->size += 2*4;
411e1bfb
AM		 7643
7644 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7645 s = htab->relplt;
eea6121a 7646 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7647 doneone = TRUE;
7648 }
7649 else
7650 pent->plt.offset = (bfd_vma) -1;
7651 if (!doneone)
65f38f15 7652 {
411e1bfb 7653 h->plt.plist = NULL;
f5385ebf 7654 h->needs_plt = 0;
65f38f15
AM		 7655 }
7656 }
7657 else
7658 {
411e1bfb 7659 h->plt.plist = NULL;
f5385ebf 7660 h->needs_plt = 0;
65f38f15
AM		 7661 }
7662
951fd09b
AM		 7663 eh = (struct ppc_link_hash_entry *) h;
7664 /* Run through the TLS GD got entries first if we're changing them
7665 to TPREL. */
e7b938ca 7666 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7667 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7668 if (gent->got.refcount > 0
7669 && (gent->tls_type & TLS_GD) != 0)
7670 {
7671 /* This was a GD entry that has been converted to TPREL. If
7672 there happens to be a TPREL entry we can use that one. */
7673 struct got_entry *ent;
7674 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7675 if (ent->got.refcount > 0
7676 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7677 && ent->addend == gent->addend
7678 && ent->owner == gent->owner)
951fd09b
AM		 7679 {
7680 gent->got.refcount = 0;
7681 break;
7682 }
7683
7684 /* If not, then we'll be using our own TPREL entry. */
7685 if (gent->got.refcount != 0)
7686 gent->tls_type = TLS_TLS | TLS_TPREL;
7687 }
7688
411e1bfb
AM		 7689 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7690 if (gent->got.refcount > 0)
7691 {
951fd09b
AM		 7692 bfd_boolean dyn;
7693
411e1bfb 7694 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7695 Undefined weak syms won't yet be marked as dynamic,
7696 nor will all TLS symbols. */
411e1bfb 7697 if (h->dynindx == -1
f5385ebf 7698 && !h->forced_local)
411e1bfb 7699 {
c152c796 7700 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7701 return FALSE;
7702 }
65f38f15 7703
d881513a 7704 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7705 && !h->def_dynamic)
411e1bfb 7706 {
e717da7e 7707 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7708 continue;
411e1bfb 7709 }
951fd09b 7710
e717da7e 7711 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7712 gent->got.offset = s->size;
7713 s->size
d881513a 7714 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7715 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7716 if ((info->shared
7717 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7718 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7719 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7720 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7721 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7722 ? 2 * sizeof (Elf64_External_Rela)
7723 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7724 }
7725 else
7726 gent->got.offset = (bfd_vma) -1;
65f38f15 7727
65f38f15 7728 if (eh->dyn_relocs == NULL)
b34976b6 7729 return TRUE;
65f38f15
AM		 7730
7731 /* In the shared -Bsymbolic case, discard space allocated for
7732 dynamic pc-relative relocs against symbols which turn out to be
7733 defined in regular objects. For the normal shared case, discard
7734 space for relocs that have become local due to symbol visibility
7735 changes. */
7736
7737 if (info->shared)
7738 {
9c7a29a3
AM		 7739 /* Relocs that use pc_count are those that appear on a call insn,
7740 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7741 generated via assembly. We want calls to protected symbols to
7742 resolve directly to the function rather than going via the plt.
7743 If people want function pointer comparisons to work as expected
7744 then they should avoid writing weird assembly. */
09695f56 7745 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7746 {
7747 struct ppc_dyn_relocs **pp;
7748
7749 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7750 {
65f38f15
AM		 7751 p->count -= p->pc_count;
7752 p->pc_count = 0;
7753 if (p->count == 0)
7754 *pp = p->next;
7755 else
7756 pp = &p->next;
5bd4f169 7757 }
65f38f15 7758 }
4e795f50
AM		 7759
7760 /* Also discard relocs on undefined weak syms with non-default
7761 visibility. */
cab87ef9
AM		 7762 if (eh->dyn_relocs != NULL
7763 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 7764 {
7765 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7766 eh->dyn_relocs = NULL;
7767
7768 /* Make sure this symbol is output as a dynamic symbol.
7769 Undefined weak syms won't yet be marked as dynamic. */
7770 else if (h->dynindx == -1
7771 && !h->forced_local)
7772 {
7773 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7774 return FALSE;
7775 }
7776 }
65f38f15 7777 }
f4656909 7778 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7779 {
7780 /* For the non-shared case, discard space for relocs against
7781 symbols which turn out to need copy relocs or are not
7782 dynamic. */
7783
f5385ebf
AM		 7784 if (!h->non_got_ref
7785 && h->def_dynamic
7786 && !h->def_regular)
65f38f15
AM		 7787 {
7788 /* Make sure this symbol is output as a dynamic symbol.
7789 Undefined weak syms won't yet be marked as dynamic. */
7790 if (h->dynindx == -1
f5385ebf 7791 && !h->forced_local)
65f38f15 7792 {
c152c796 7793 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7794 return FALSE;
65f38f15
AM		 7795 }
7796
7797 /* If that succeeded, we know we'll be keeping all the
7798 relocs. */
7799 if (h->dynindx != -1)
7800 goto keep;
7801 }
7802
7803 eh->dyn_relocs = NULL;
7804
ec338859 7805 keep: ;
65f38f15
AM		 7806 }
7807
7808 /* Finally, allocate space. */
7809 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7810 {
7811 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7812 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7813 }
7814
b34976b6 7815 return TRUE;
65f38f15
AM		 7816}
7817
7818/* Find any dynamic relocs that apply to read-only sections. */
7819
b34976b6 7820static bfd_boolean
4ce794b7 7821readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7822{
7823 struct ppc_link_hash_entry *eh;
7824 struct ppc_dyn_relocs *p;
7825
e92d460e
AM		 7826 if (h->root.type == bfd_link_hash_warning)
7827 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7828
65f38f15
AM		 7829 eh = (struct ppc_link_hash_entry *) h;
7830 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7831 {
7832 asection *s = p->sec->output_section;
7833
7834 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7835 {
4ce794b7 7836 struct bfd_link_info *info = inf;
65f38f15
AM		 7837
7838 info->flags |= DF_TEXTREL;
7839
7840 /* Not an error, just cut short the traversal. */
b34976b6 7841 return FALSE;
65f38f15
AM		 7842 }
7843 }
b34976b6 7844 return TRUE;
65f38f15
AM		 7845}
7846
7847/* Set the sizes of the dynamic sections. */
7848
b34976b6 7849static bfd_boolean
4ce794b7
AM		 7850ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7851 struct bfd_link_info *info)
65f38f15
AM		 7852{
7853 struct ppc_link_hash_table *htab;
7854 bfd *dynobj;
7855 asection *s;
b34976b6 7856 bfd_boolean relocs;
65f38f15
AM		 7857 bfd *ibfd;
7858
7859 htab = ppc_hash_table (info);
7860 dynobj = htab->elf.dynobj;
7861 if (dynobj == NULL)
7862 abort ();
7863
7864 if (htab->elf.dynamic_sections_created)
7865 {
7866 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7867 if (info->executable)
65f38f15
AM		 7868 {
7869 s = bfd_get_section_by_name (dynobj, ".interp");
7870 if (s == NULL)
7871 abort ();
eea6121a 7872 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7873 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7874 }
7875 }
7876
7877 /* Set up .got offsets for local syms, and space for local dynamic
7878 relocs. */
7879 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7880 {
411e1bfb
AM		 7881 struct got_entry **lgot_ents;
7882 struct got_entry **end_lgot_ents;
e7b938ca 7883 char *lgot_masks;
65f38f15
AM		 7884 bfd_size_type locsymcount;
7885 Elf_Internal_Shdr *symtab_hdr;
7886 asection *srel;
7887
ee75fd95 7888 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7889 continue;
7890
e717da7e
AM		 7891 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7892 {
7893 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7894 ppc64_tlsld_got (ibfd)->offset = s->size;
7895 s->size += 16;
e717da7e
AM		 7896 if (info->shared)
7897 {
7898 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7899 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7900 }
7901 }
7902 else
7903 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7904
65f38f15
AM		 7905 for (s = ibfd->sections; s != NULL; s = s->next)
7906 {
ec338859 7907 struct ppc_dyn_relocs *p;
65f38f15 7908
6edfbbad 7909 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 7910 {
ec338859
AM		 7911 if (!bfd_is_abs_section (p->sec)
7912 && bfd_is_abs_section (p->sec->output_section))
7913 {
7914 /* Input section has been discarded, either because
7915 it is a copy of a linkonce section or due to
7916 linker script /DISCARD/, so we'll be discarding
7917 the relocs too. */
7918 }
248866a8 7919 else if (p->count != 0)
ec338859
AM		 7920 {
7921 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7922 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7923 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7924 info->flags |= DF_TEXTREL;
ec338859 7925 }
65f38f15
AM		 7926 }
7927 }
7928
411e1bfb
AM		 7929 lgot_ents = elf_local_got_ents (ibfd);
7930 if (!lgot_ents)
65f38f15
AM		 7931 continue;
7932
7933 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7934 locsymcount = symtab_hdr->sh_info;
411e1bfb 7935 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7936 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7937 s = ppc64_elf_tdata (ibfd)->got;
7938 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7939 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7940 {
411e1bfb
AM		 7941 struct got_entry *ent;
7942
7943 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7944 if (ent->got.refcount > 0)
7945 {
e7b938ca 7946 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7947 {
e717da7e 7948 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7949 {
eea6121a
AM		 7950 ppc64_tlsld_got (ibfd)->offset = s->size;
7951 s->size += 16;
411e1bfb 7952 if (info->shared)
eea6121a 7953 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7954 }
e717da7e 7955 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7956 }
7957 else
7958 {
eea6121a 7959 ent->got.offset = s->size;
e7b938ca 7960 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7961 {
eea6121a 7962 s->size += 16;
411e1bfb 7963 if (info->shared)
eea6121a 7964 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7965 }
7966 else
7967 {
eea6121a 7968 s->size += 8;
411e1bfb 7969 if (info->shared)
eea6121a 7970 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7971 }
7972 }
7973 }
7974 else
7975 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7976 }
7977 }
7978
7979 /* Allocate global sym .plt and .got entries, and space for global
7980 sym dynamic relocs. */
4ce794b7 7981 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7982
7983 /* We now have determined the sizes of the various dynamic sections.
7984 Allocate memory for them. */
b34976b6 7985 relocs = FALSE;
65f38f15
AM		 7986 for (s = dynobj->sections; s != NULL; s = s->next)
7987 {
7988 if ((s->flags & SEC_LINKER_CREATED) == 0)
7989 continue;
7990
4ce794b7 7991 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7992 /* These haven't been allocated yet; don't strip. */
7993 continue;
e717da7e
AM		 7994 else if (s == htab->got
7995 || s == htab->plt
c456f082
AM		 7996 || s == htab->glink
7997 || s == htab->dynbss)
65f38f15
AM		 7998 {
7999 /* Strip this section if we don't need it; see the
8000 comment below. */
5bd4f169 8001 }
0112cd26 8002 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 8003 {
c456f082 8004 if (s->size != 0)
5bd4f169 8005 {
4ce794b7 8006 if (s != htab->relplt)
b34976b6 8007 relocs = TRUE;
5bd4f169
AM		 8008
8009 /* We use the reloc_count field as a counter if we need
8010 to copy relocs into the output file. */
8011 s->reloc_count = 0;
8012 }
8013 }
65f38f15 8014 else
5bd4f169
AM		 8015 {
8016 /* It's not one of our sections, so don't allocate space. */
8017 continue;
8018 }
8019
eea6121a 8020 if (s->size == 0)
5bd4f169 8021 {
c456f082
AM		 8022 /* If we don't need this section, strip it from the
8023 output file. This is mostly to handle .rela.bss and
8024 .rela.plt. We must create both sections in
8025 create_dynamic_sections, because they must be created
8026 before the linker maps input sections to output
8027 sections. The linker does that before
8028 adjust_dynamic_symbol is called, and it is that
8029 function which decides whether anything needs to go
8030 into these sections. */
8423293d 8031 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 8032 continue;
8033 }
8034
c456f082 8035 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 8036 continue;
8037
65f38f15
AM		 8038 /* Allocate memory for the section contents. We use bfd_zalloc
8039 here in case unused entries are not reclaimed before the
8040 section's contents are written out. This should not happen,
411e1bfb
AM		 8041 but this way if it does we get a R_PPC64_NONE reloc in .rela
8042 sections instead of garbage.
8043 We also rely on the section contents being zero when writing
8044 the GOT. */
eea6121a 8045 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8046 if (s->contents == NULL)
b34976b6 8047 return FALSE;
5bd4f169
AM		 8048 }
8049
e717da7e
AM		 8050 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8051 {
ee75fd95 8052 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 8053 continue;
8054
e717da7e
AM		 8055 s = ppc64_elf_tdata (ibfd)->got;
8056 if (s != NULL && s != htab->got)
8057 {
eea6121a 8058 if (s->size == 0)
8423293d 8059 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8060 else
8061 {
eea6121a 8062 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8063 if (s->contents == NULL)
8064 return FALSE;
8065 }
8066 }
8067 s = ppc64_elf_tdata (ibfd)->relgot;
8068 if (s != NULL)
8069 {
eea6121a 8070 if (s->size == 0)
8423293d 8071 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8072 else
8073 {
eea6121a 8074 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8075 if (s->contents == NULL)
8076 return FALSE;
8077 relocs = TRUE;
8078 s->reloc_count = 0;
8079 }
8080 }
8081 }
8082
e86ce104 8083 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 8084 {
8085 /* Add some entries to the .dynamic section. We fill in the
8086 values later, in ppc64_elf_finish_dynamic_sections, but we
8087 must add the entries now so that we get the correct size for
8088 the .dynamic section. The DT_DEBUG entry is filled in by the
8089 dynamic linker and used by the debugger. */
dc810e39 8090#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8091 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8092
36af4a4e 8093 if (info->executable)
5bd4f169 8094 {
dc810e39 8095 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8096 return FALSE;
5bd4f169
AM		 8097 }
8098
eea6121a 8099 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8100 {
dc810e39
AM		 8101 if (!add_dynamic_entry (DT_PLTGOT, 0)
8102 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8103 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 8104 || !add_dynamic_entry (DT_JMPREL, 0)
8105 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8106 return FALSE;
5bd4f169
AM		 8107 }
8108
19397422
AM		 8109 if (NO_OPD_RELOCS)
8110 {
8111 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8112 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8113 return FALSE;
19397422
AM		 8114 }
8115
5bd4f169
AM		 8116 if (relocs)
8117 {
dc810e39
AM		 8118 if (!add_dynamic_entry (DT_RELA, 0)
8119 || !add_dynamic_entry (DT_RELASZ, 0)
8120 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8121 return FALSE;
5bd4f169 8122
65f38f15
AM		 8123 /* If any dynamic relocs apply to a read-only section,
8124 then we need a DT_TEXTREL entry. */
248866a8 8125 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8126 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8127
65f38f15 8128 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8129 {
65f38f15 8130 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8131 return FALSE;
5bd4f169 8132 }
5bd4f169 8133 }
5bd4f169 8134 }
65f38f15 8135#undef add_dynamic_entry
5bd4f169 8136
b34976b6 8137 return TRUE;
5bd4f169
AM		 8138}
8139
721956f4 8140/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8141
4ce794b7
AM		 8142static inline enum ppc_stub_type
8143ppc_type_of_stub (asection *input_sec,
8144 const Elf_Internal_Rela *rel,
8145 struct ppc_link_hash_entry **hash,
8146 bfd_vma destination)
5bd4f169 8147{
721956f4
AM		 8148 struct ppc_link_hash_entry *h = *hash;
8149 bfd_vma location;
8150 bfd_vma branch_offset;
8151 bfd_vma max_branch_offset;
4ce794b7 8152 enum elf_ppc64_reloc_type r_type;
5bd4f169 8153
721956f4
AM		 8154 if (h != NULL)
8155 {
7fe2b9a6
AM		 8156 struct ppc_link_hash_entry *fdh = h;
8157 if (fdh->oh != NULL
8158 && fdh->oh->is_func_descriptor)
8159 fdh = fdh->oh;
8387904d 8160
7fe2b9a6 8161 if (fdh->elf.dynindx != -1)
5bd4f169 8162 {
411e1bfb 8163 struct plt_entry *ent;
8387904d 8164
7fe2b9a6 8165 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 8166 if (ent->addend == rel->r_addend
8167 && ent->plt.offset != (bfd_vma) -1)
8168 {
7fe2b9a6 8169 *hash = fdh;
411e1bfb
AM		 8170 return ppc_stub_plt_call;
8171 }
5bd4f169
AM		 8172 }
8173
7fe2b9a6
AM		 8174 /* Here, we know we don't have a plt entry. If we don't have a
8175 either a defined function descriptor or a defined entry symbol
8176 in a regular object file, then it is pointless trying to make
8177 any other type of stub. */
8178 if (!((fdh->elf.root.type == bfd_link_hash_defined
8179 || fdh->elf.root.type == bfd_link_hash_defweak)
8180 && fdh->elf.root.u.def.section->output_section != NULL)
8181 && !((h->elf.root.type == bfd_link_hash_defined
8182 || h->elf.root.type == bfd_link_hash_defweak)
8183 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8184 return ppc_stub_none;
5d1634d7 8185 }
5d1634d7 8186
721956f4
AM		 8187 /* Determine where the call point is. */
8188 location = (input_sec->output_offset
8189 + input_sec->output_section->vma
8190 + rel->r_offset);
5d1634d7 8191
721956f4
AM		 8192 branch_offset = destination - location;
8193 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8194
721956f4
AM		 8195 /* Determine if a long branch stub is needed. */
8196 max_branch_offset = 1 << 25;
4ce794b7 8197 if (r_type != R_PPC64_REL24)
721956f4 8198 max_branch_offset = 1 << 15;
5d1634d7 8199
721956f4
AM		 8200 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8201 /* We need a stub. Figure out whether a long_branch or plt_branch
8202 is needed later. */
8203 return ppc_stub_long_branch;
5d1634d7 8204
721956f4 8205 return ppc_stub_none;
5d1634d7
AM		 8206}
8207
8208/* Build a .plt call stub. */
8209
4ce794b7
AM		 8210static inline bfd_byte *
8211build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 8212{
8213#define PPC_LO(v) ((v) & 0xffff)
8214#define PPC_HI(v) (((v) >> 16) & 0xffff)
8215#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8216
5d1634d7 8217 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 8218 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 8219 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8220 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 8221 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 8222 offset += 8;
8223 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
8224 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 8225 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 8226 offset += 8;
8227 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8228 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8229 bfd_put_32 (obfd, BCTR, p), p += 4;
8230 return p;
8231}
8232
b34976b6 8233static bfd_boolean
4ce794b7 8234ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8235{
721956f4
AM		 8236 struct ppc_stub_hash_entry *stub_entry;
8237 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 8238 struct bfd_link_info *info;
8239 struct ppc_link_hash_table *htab;
721956f4
AM		 8240 bfd_byte *loc;
8241 bfd_byte *p;
8242 unsigned int indx;
411e1bfb 8243 struct plt_entry *ent;
ee75fd95 8244 bfd_vma dest, off;
721956f4 8245 int size;
5d1634d7 8246
721956f4
AM		 8247 /* Massage our args to the form they really have. */
8248 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8249 info = in_arg;
5d1634d7 8250
5d1634d7
AM		 8251 htab = ppc_hash_table (info);
8252
721956f4 8253 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8254 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8255 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8256
4ce794b7 8257 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8258 switch (stub_entry->stub_type)
5d1634d7 8259 {
721956f4 8260 case ppc_stub_long_branch:
ad8e1ba5 8261 case ppc_stub_long_branch_r2off:
721956f4 8262 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 8263 off = dest = (stub_entry->target_value
8264 + stub_entry->target_section->output_offset
8265 + stub_entry->target_section->output_section->vma);
5d1634d7 8266
721956f4
AM		 8267 /* And this is where we are coming from. */
8268 off -= (stub_entry->stub_offset
97b639ba
AM		 8269 + stub_entry->stub_sec->output_offset
8270 + stub_entry->stub_sec->output_section->vma);
e86ce104 8271
ad8e1ba5
AM		 8272 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8273 size = 4;
8274 else
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;
97b639ba 8282 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8283 loc += 4;
97b639ba 8284 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8285 loc += 4;
8286 off -= 12;
8287 size = 16;
8288 }
97b639ba 8289 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8290
5c3dead3
AM		 8291 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8292 {
8293 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8294 stub_entry->root.string);
8295 htab->stub_error = TRUE;
8296 return FALSE;
8297 }
ee75fd95
AM		 8298
8299 if (info->emitrelocations)
8300 {
8301 Elf_Internal_Rela *relocs, *r;
8302 struct bfd_elf_section_data *elfsec_data;
8303
8304 elfsec_data = elf_section_data (stub_entry->stub_sec);
8305 relocs = elfsec_data->relocs;
8306 if (relocs == NULL)
8307 {
8308 bfd_size_type relsize;
8309 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8310 relocs = bfd_alloc (htab->stub_bfd, relsize);
8311 if (relocs == NULL)
8312 return FALSE;
8313 elfsec_data->relocs = relocs;
8314 elfsec_data->rel_hdr.sh_size = relsize;
8315 elfsec_data->rel_hdr.sh_entsize = 24;
8316 stub_entry->stub_sec->reloc_count = 0;
8317 }
8318 r = relocs + stub_entry->stub_sec->reloc_count;
8319 stub_entry->stub_sec->reloc_count += 1;
8320 r->r_offset = loc - stub_entry->stub_sec->contents;
8321 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8322 r->r_addend = dest;
8323 if (stub_entry->h != NULL)
8324 {
8325 struct elf_link_hash_entry **hashes;
8326 unsigned long symndx;
8327 struct ppc_link_hash_entry *h;
8328
8329 hashes = elf_sym_hashes (htab->stub_bfd);
8330 if (hashes == NULL)
8331 {
8332 bfd_size_type hsize;
8333
8334 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8335 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8336 if (hashes == NULL)
8337 return FALSE;
8338 elf_sym_hashes (htab->stub_bfd) = hashes;
8339 htab->stub_globals = 1;
8340 }
8341 symndx = htab->stub_globals++;
8342 h = stub_entry->h;
8343 hashes[symndx] = &h->elf;
8344 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8345 if (h->oh != NULL && h->oh->is_func)
8346 h = h->oh;
8347 if (h->elf.root.u.def.section != stub_entry->target_section)
8348 /* H is an opd symbol. The addend must be zero. */
8349 r->r_addend = 0;
8350 else
8351 {
8352 off = (h->elf.root.u.def.value
8353 + h->elf.root.u.def.section->output_offset
8354 + h->elf.root.u.def.section->output_section->vma);
8355 r->r_addend -= off;
8356 }
8357 }
8358 }
721956f4 8359 break;
e86ce104 8360
721956f4 8361 case ppc_stub_plt_branch:
ad8e1ba5 8362 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8363 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8364 stub_entry->root.string + 9,
b34976b6 8365 FALSE, FALSE);
721956f4
AM		 8366 if (br_entry == NULL)
8367 {
8368 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8369 stub_entry->root.string);
b34976b6
AM		 8370 htab->stub_error = TRUE;
8371 return FALSE;
721956f4
AM		 8372 }
8373
8374 off = (stub_entry->target_value
8375 + stub_entry->target_section->output_offset
8376 + stub_entry->target_section->output_section->vma);
8377
4ce794b7
AM		 8378 bfd_put_64 (htab->brlt->owner, off,
8379 htab->brlt->contents + br_entry->offset);
721956f4 8380
ee75fd95 8381 if (htab->relbrlt != NULL)
721956f4
AM		 8382 {
8383 /* Create a reloc for the branch lookup table entry. */
8384 Elf_Internal_Rela rela;
ad8e1ba5 8385 bfd_byte *rl;
5d1634d7 8386
721956f4 8387 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8388 + htab->brlt->output_offset
8389 + htab->brlt->output_section->vma);
721956f4
AM		 8390 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8391 rela.r_addend = off;
8392
4ce794b7
AM		 8393 rl = htab->relbrlt->contents;
8394 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8395 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 8396 }
8397
8398 off = (br_entry->offset
4ce794b7
AM		 8399 + htab->brlt->output_offset
8400 + htab->brlt->output_section->vma
8401 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8402 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8403
ad8e1ba5 8404 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8405 {
8406 (*_bfd_error_handler)
e86ce104 8407 (_("linkage table error against `%s'"),
721956f4 8408 stub_entry->root.string);
5d1634d7 8409 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8410 htab->stub_error = TRUE;
8411 return FALSE;
5d1634d7 8412 }
41bd81ab 8413
721956f4 8414 indx = off;
ad8e1ba5
AM		 8415 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8416 {
97b639ba 8417 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8418 loc += 4;
97b639ba 8419 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 8420 size = 16;
8421 }
8422 else
8423 {
8424 bfd_vma r2off;
8425
8426 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8427 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8428 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8429 loc += 4;
97b639ba 8430 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8431 loc += 4;
97b639ba 8432 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8433 loc += 4;
97b639ba 8434 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8435 loc += 4;
97b639ba 8436 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8437 size = 28;
8438 }
8439 loc += 4;
97b639ba 8440 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8441 loc += 4;
97b639ba 8442 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8443 break;
5d1634d7 8444
721956f4 8445 case ppc_stub_plt_call:
c862ae31
AM		 8446 /* Do the best we can for shared libraries built without
8447 exporting ".foo" for each "foo". This can happen when symbol
8448 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8449 if (stub_entry->h->oh != NULL
8450 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8451 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8452 {
8453 /* Point the symbol at the stub. There may be multiple stubs,
8454 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8455 defined somewhere. Maybe defining the symbol in the stub
8456 section is a silly idea. If we didn't do this, htab->top_id
8457 could disappear. */
34814b9f
AM		 8458 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8459 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8460 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8461 }
8462
721956f4 8463 /* Now build the stub. */
411e1bfb
AM		 8464 off = (bfd_vma) -1;
8465 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8466 if (ent->addend == stub_entry->addend)
8467 {
8468 off = ent->plt.offset;
8469 break;
8470 }
721956f4
AM		 8471 if (off >= (bfd_vma) -2)
8472 abort ();
8473
8474 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8475 off += (htab->plt->output_offset
8476 + htab->plt->output_section->vma
8477 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8478 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8479
ad8e1ba5 8480 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8481 {
8482 (*_bfd_error_handler)
8483 (_("linkage table error against `%s'"),
8484 stub_entry->h->elf.root.root.string);
8485 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8486 htab->stub_error = TRUE;
8487 return FALSE;
721956f4
AM		 8488 }
8489
97b639ba 8490 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8491 size = p - loc;
8492 break;
8493
8494 default:
8495 BFD_FAIL ();
b34976b6 8496 return FALSE;
721956f4
AM		 8497 }
8498
eea6121a 8499 stub_entry->stub_sec->size += size;
97b639ba 8500
ee75fd95 8501 if (htab->emit_stub_syms)
97b639ba
AM		 8502 {
8503 struct elf_link_hash_entry *h;
ee75fd95
AM		 8504 size_t len1, len2;
8505 char *name;
8506 const char *const stub_str[] = { "long_branch",
8507 "long_branch_r2off",
8508 "plt_branch",
8509 "plt_branch_r2off",
8510 "plt_call" };
8511
8512 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8513 len2 = strlen (stub_entry->root.string);
8514 name = bfd_malloc (len1 + len2 + 2);
8515 if (name == NULL)
8516 return FALSE;
8517 memcpy (name, stub_entry->root.string, 9);
8518 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8519 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8520 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8521 if (h == NULL)
8522 return FALSE;
8523 if (h->root.type == bfd_link_hash_new)
8524 {
8525 h->root.type = bfd_link_hash_defined;
8526 h->root.u.def.section = stub_entry->stub_sec;
8527 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8528 h->ref_regular = 1;
8529 h->def_regular = 1;
8530 h->ref_regular_nonweak = 1;
8531 h->forced_local = 1;
8532 h->non_elf = 0;
97b639ba
AM		 8533 }
8534 }
8535
b34976b6 8536 return TRUE;
721956f4
AM		 8537}
8538
8539/* As above, but don't actually build the stub. Just bump offset so
8540 we know stub section sizes, and select plt_branch stubs where
8541 long_branch stubs won't do. */
8542
b34976b6 8543static bfd_boolean
4ce794b7 8544ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8545{
8546 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8547 struct bfd_link_info *info;
721956f4
AM		 8548 struct ppc_link_hash_table *htab;
8549 bfd_vma off;
8550 int size;
8551
8552 /* Massage our args to the form they really have. */
8553 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8554 info = in_arg;
8555
8556 htab = ppc_hash_table (info);
721956f4
AM		 8557
8558 if (stub_entry->stub_type == ppc_stub_plt_call)
8559 {
411e1bfb 8560 struct plt_entry *ent;
58ac9f71 8561 off = (bfd_vma) -1;
411e1bfb
AM		 8562 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8563 if (ent->addend == stub_entry->addend)
8564 {
8565 off = ent->plt.offset & ~(bfd_vma) 1;
8566 break;
8567 }
58ac9f71 8568 if (off >= (bfd_vma) -2)
411e1bfb 8569 abort ();
4ce794b7
AM		 8570 off += (htab->plt->output_offset
8571 + htab->plt->output_section->vma
8572 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8573 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8574
ad8e1ba5 8575 size = PLT_CALL_STUB_SIZE;
4ce794b7 8576 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8577 size += 4;
8578 }
8579 else
8580 {
ad8e1ba5
AM		 8581 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8582 variants. */
721956f4
AM		 8583 off = (stub_entry->target_value
8584 + stub_entry->target_section->output_offset
8585 + stub_entry->target_section->output_section->vma);
eea6121a 8586 off -= (stub_entry->stub_sec->size
721956f4
AM		 8587 + stub_entry->stub_sec->output_offset
8588 + stub_entry->stub_sec->output_section->vma);
8589
ad8e1ba5
AM		 8590 /* Reset the stub type from the plt variant in case we now
8591 can reach with a shorter stub. */
8592 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8593 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8594
8595 size = 4;
8596 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8597 {
8598 off -= 12;
8599 size = 16;
8600 }
8601
8602 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8603 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8604 {
8605 struct ppc_branch_hash_entry *br_entry;
8606
8607 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8608 stub_entry->root.string + 9,
b34976b6 8609 TRUE, FALSE);
721956f4
AM		 8610 if (br_entry == NULL)
8611 {
8612 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8613 stub_entry->root.string);
b34976b6
AM		 8614 htab->stub_error = TRUE;
8615 return FALSE;
721956f4
AM		 8616 }
8617
8618 if (br_entry->iter != htab->stub_iteration)
8619 {
8620 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8621 br_entry->offset = htab->brlt->size;
8622 htab->brlt->size += 8;
63bc6f6c 8623
ee75fd95 8624 if (htab->relbrlt != NULL)
eea6121a 8625 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8626 }
ad8e1ba5
AM		 8627
8628 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8629 size = 16;
ad8e1ba5
AM		 8630 if (stub_entry->stub_type != ppc_stub_plt_branch)
8631 size = 28;
721956f4 8632 }
ee75fd95
AM		 8633
8634 if (info->emitrelocations
8635 && (stub_entry->stub_type == ppc_stub_long_branch
8636 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8637 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8638 }
8639
eea6121a 8640 stub_entry->stub_sec->size += size;
b34976b6 8641 return TRUE;
721956f4
AM		 8642}
8643
8644/* Set up various things so that we can make a list of input sections
8645 for each output section included in the link. Returns -1 on error,
cedb70c5 8646 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8647
8648int
4c52953f
AM		 8649ppc64_elf_setup_section_lists (bfd *output_bfd,
8650 struct bfd_link_info *info,
8651 int no_multi_toc)
721956f4
AM		 8652{
8653 bfd *input_bfd;
734b6cf9 8654 int top_id, top_index, id;
721956f4 8655 asection *section;
734b6cf9 8656 asection **input_list;
721956f4
AM		 8657 bfd_size_type amt;
8658 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8659
4c52953f
AM		 8660 htab->no_multi_toc = no_multi_toc;
8661
4ce794b7 8662 if (htab->brlt == NULL)
721956f4
AM		 8663 return 0;
8664
1e2f5b6e 8665 /* Find the top input section id. */
3d6f9012 8666 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8667 input_bfd != NULL;
8668 input_bfd = input_bfd->link_next)
8669 {
721956f4
AM		 8670 for (section = input_bfd->sections;
8671 section != NULL;
8672 section = section->next)
8673 {
8674 if (top_id < section->id)
8675 top_id = section->id;
8676 }
8677 }
721956f4 8678
8f3bab57 8679 htab->top_id = top_id;
721956f4 8680 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8681 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8682 if (htab->stub_group == NULL)
8683 return -1;
8684
3d6f9012
AM		 8685 /* Set toc_off for com, und, abs and ind sections. */
8686 for (id = 0; id < 3; id++)
8687 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8688
3d6f9012 8689 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8690
8691 /* We can't use output_bfd->section_count here to find the top output
8692 section index as some sections may have been removed, and
8423293d 8693 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8694 for (section = output_bfd->sections, top_index = 0;
8695 section != NULL;
8696 section = section->next)
8697 {
8698 if (top_index < section->index)
8699 top_index = section->index;
8700 }
8701
8702 htab->top_index = top_index;
8703 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8704 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8705 htab->input_list = input_list;
8706 if (input_list == NULL)
8707 return -1;
8708
721956f4
AM		 8709 return 1;
8710}
8711
e717da7e
AM		 8712/* The linker repeatedly calls this function for each TOC input section
8713 and linker generated GOT section. Group input bfds such that the toc
8714 within a group is less than 64k in size. Will break with cute linker
8715 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8716
8717void
4ce794b7 8718ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8719{
8720 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8721
4c52953f
AM		 8722 if (!htab->no_multi_toc)
8723 {
8724 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8725 bfd_vma off = addr - htab->toc_curr;
8726
8727 if (off + isec->size > 0x10000)
8728 htab->toc_curr = addr;
99877b66 8729
4c52953f
AM		 8730 elf_gp (isec->owner) = (htab->toc_curr
8731 - elf_gp (isec->output_section->owner)
8732 + TOC_BASE_OFF);
8733 }
ad8e1ba5
AM		 8734}
8735
8736/* Called after the last call to the above function. */
8737
8738void
4c52953f 8739ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8740{
8741 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8742
4c52953f
AM		 8743 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8744
ad8e1ba5
AM		 8745 /* toc_curr tracks the TOC offset used for code sections below in
8746 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8747 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8748}
8749
9b5ecbd0
AM		 8750/* No toc references were found in ISEC. If the code in ISEC makes no
8751 calls, then there's no need to use toc adjusting stubs when branching
8752 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8753 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8754 needed, and 2 if a cyclical call-graph was found but no other reason
8755 for a stub was detected. If called from the top level, a return of
8756 2 means the same as a return of 0. */
9b5ecbd0
AM		 8757
8758static int
4ce794b7 8759toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8760{
4c52953f
AM		 8761 Elf_Internal_Rela *relstart, *rel;
8762 Elf_Internal_Sym *local_syms;
9b5ecbd0 8763 int ret;
4c52953f 8764 struct ppc_link_hash_table *htab;
9b5ecbd0 8765
772119ce
AM		 8766 /* We know none of our code bearing sections will need toc stubs. */
8767 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8768 return 0;
8769
eea6121a 8770 if (isec->size == 0)
082c50f8
AM		 8771 return 0;
8772
4c52953f
AM		 8773 if (isec->output_section == NULL)
8774 return 0;
8775
9b5ecbd0
AM		 8776 /* Hack for linux kernel. .fixup contains branches, but only back to
8777 the function that hit an exception. */
4c52953f
AM		 8778 if (strcmp (isec->name, ".fixup") == 0)
8779 return 0;
9b5ecbd0 8780
4c52953f
AM		 8781 if (isec->reloc_count == 0)
8782 return 0;
8783
8784 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8785 info->keep_memory);
8786 if (relstart == NULL)
8787 return -1;
8788
8789 /* Look for branches to outside of this section. */
8790 local_syms = NULL;
8791 ret = 0;
8792 htab = ppc_hash_table (info);
8793 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8794 {
4c52953f
AM		 8795 enum elf_ppc64_reloc_type r_type;
8796 unsigned long r_symndx;
8797 struct elf_link_hash_entry *h;
8798 Elf_Internal_Sym *sym;
8799 asection *sym_sec;
8800 long *opd_adjust;
8801 bfd_vma sym_value;
8802 bfd_vma dest;
8803
8804 r_type = ELF64_R_TYPE (rel->r_info);
8805 if (r_type != R_PPC64_REL24
8806 && r_type != R_PPC64_REL14
8807 && r_type != R_PPC64_REL14_BRTAKEN
8808 && r_type != R_PPC64_REL14_BRNTAKEN)
8809 continue;
8810
8811 r_symndx = ELF64_R_SYM (rel->r_info);
8812 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8813 isec->owner))
9b5ecbd0 8814 {
4c52953f
AM		 8815 ret = -1;
8816 break;
9b5ecbd0 8817 }
9b5ecbd0 8818
2917689a
AM		 8819 /* Calls to dynamic lib functions go through a plt call stub
8820 that uses r2. Branches to undefined symbols might be a call
8821 using old-style dot symbols that can be satisfied by a plt
8822 call into a new-style dynamic library. */
4c52953f 8823 if (sym_sec == NULL)
2917689a
AM		 8824 {
8825 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8826 if (eh != NULL
8827 && eh->oh != NULL
8828 && eh->oh->elf.plt.plist != NULL)
8829 {
8830 ret = 1;
8831 break;
8832 }
4c52953f 8833
2917689a
AM		 8834 /* Ignore other undefined symbols. */
8835 continue;
8836 }
8837
8838 /* Assume branches to other sections not included in the link need
8839 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8840 if (sym_sec->output_section == NULL)
8841 {
8842 ret = 1;
8843 break;
8844 }
8845
8846 if (h == NULL)
8847 sym_value = sym->st_value;
8848 else
8849 {
8850 if (h->root.type != bfd_link_hash_defined
8851 && h->root.type != bfd_link_hash_defweak)
8852 abort ();
8853 sym_value = h->root.u.def.value;
8854 }
8855 sym_value += rel->r_addend;
8856
8857 /* If this branch reloc uses an opd sym, find the code section. */
8858 opd_adjust = get_opd_info (sym_sec);
8859 if (opd_adjust != NULL)
8860 {
4c52953f
AM		 8861 if (h == NULL)
8862 {
8863 long adjust;
8864
8865 adjust = opd_adjust[sym->st_value / 8];
8866 if (adjust == -1)
8867 /* Assume deleted functions won't ever be called. */
8868 continue;
8869 sym_value += adjust;
8870 }
8871
8872 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8873 if (dest == (bfd_vma) -1)
8874 continue;
8875 }
8876 else
8877 dest = (sym_value
8878 + sym_sec->output_offset
8879 + sym_sec->output_section->vma);
8880
8881 /* Ignore branch to self. */
8882 if (sym_sec == isec)
8883 continue;
8884
8885 /* If the called function uses the toc, we need a stub. */
8886 if (sym_sec->has_toc_reloc
8887 || sym_sec->makes_toc_func_call)
8888 {
8889 ret = 1;
8890 break;
8891 }
8892
8893 /* Assume any branch that needs a long branch stub might in fact
8894 need a plt_branch stub. A plt_branch stub uses r2. */
8895 else if (dest - (isec->output_offset
8896 + isec->output_section->vma
8897 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8898 {
8899 ret = 1;
8900 break;
8901 }
4c52953f
AM		 8902
8903 /* If calling back to a section in the process of being tested, we
8904 can't say for sure that no toc adjusting stubs are needed, so
8905 don't return zero. */
8906 else if (sym_sec->call_check_in_progress)
8907 ret = 2;
8908
8909 /* Branches to another section that itself doesn't have any TOC
8910 references are OK. Recursively call ourselves to check. */
8911 else if (sym_sec->id <= htab->top_id
8912 && htab->stub_group[sym_sec->id].toc_off == 0)
8913 {
8914 int recur;
8915
8916 /* Mark current section as indeterminate, so that other
8917 sections that call back to current won't be marked as
8918 known. */
8919 isec->call_check_in_progress = 1;
8920 recur = toc_adjusting_stub_needed (info, sym_sec);
8921 isec->call_check_in_progress = 0;
8922
8923 if (recur < 0)
8924 {
8925 /* An error. Exit. */
8926 ret = -1;
8927 break;
8928 }
8929 else if (recur <= 1)
8930 {
8931 /* Known result. Mark as checked and set section flag. */
8932 htab->stub_group[sym_sec->id].toc_off = 1;
8933 if (recur != 0)
8934 {
8935 sym_sec->makes_toc_func_call = 1;
8936 ret = 1;
8937 break;
8938 }
8939 }
8940 else
8941 {
8942 /* Unknown result. Continue checking. */
8943 ret = 2;
8944 }
8945 }
9b5ecbd0
AM		 8946 }
8947
4c52953f
AM		 8948 if (local_syms != NULL
8949 && (elf_tdata (isec->owner)->symtab_hdr.contents
8950 != (unsigned char *) local_syms))
8951 free (local_syms);
8952 if (elf_section_data (isec)->relocs != relstart)
8953 free (relstart);
8954
9b5ecbd0
AM		 8955 return ret;
8956}
8957
721956f4
AM		 8958/* The linker repeatedly calls this function for each input section,
8959 in the order that input sections are linked into output sections.
8960 Build lists of input sections to determine groupings between which
8961 we may insert linker stubs. */
8962
9b5ecbd0 8963bfd_boolean
4ce794b7 8964ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8965{
8966 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8967
734b6cf9
AM		 8968 if ((isec->output_section->flags & SEC_CODE) != 0
8969 && isec->output_section->index <= htab->top_index)
721956f4 8970 {
734b6cf9 8971 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8972 /* Steal the link_sec pointer for our list. */
721956f4 8973#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8974 /* This happens to make the list in reverse order,
8975 which is what we want. */
734b6cf9
AM		 8976 PREV_SEC (isec) = *list;
8977 *list = isec;
721956f4 8978 }
ad8e1ba5 8979
4c52953f 8980 if (htab->multi_toc_needed)
9b5ecbd0 8981 {
4c52953f
AM		 8982 /* If a code section has a function that uses the TOC then we need
8983 to use the right TOC (obviously). Also, make sure that .opd gets
8984 the correct TOC value for R_PPC64_TOC relocs that don't have or
8985 can't find their function symbol (shouldn't ever happen now). */
8986 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8987 {
8988 if (elf_gp (isec->owner) != 0)
8989 htab->toc_curr = elf_gp (isec->owner);
8990 }
8991 else if (htab->stub_group[isec->id].toc_off == 0)
8992 {
8993 int ret = toc_adjusting_stub_needed (info, isec);
8994 if (ret < 0)
8995 return FALSE;
8996 else
8997 isec->makes_toc_func_call = ret & 1;
8998 }
9b5ecbd0 8999 }
ad8e1ba5
AM		 9000
9001 /* Functions that don't use the TOC can belong in any TOC group.
9002 Use the last TOC base. This happens to make _init and _fini
9003 pasting work. */
9004 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9005 return TRUE;
721956f4
AM		 9006}
9007
9008/* See whether we can group stub sections together. Grouping stub
9009 sections may result in fewer stubs. More importantly, we need to
9010 put all .init* and .fini* stubs at the beginning of the .init or
9011 .fini output sections respectively, because glibc splits the
9012 _init and _fini functions into multiple parts. Putting a stub in
9013 the middle of a function is not a good idea. */
9014
9015static void
4ce794b7
AM		 9016group_sections (struct ppc_link_hash_table *htab,
9017 bfd_size_type stub_group_size,
9018 bfd_boolean stubs_always_before_branch)
721956f4 9019{
7c8fe5c4
AM		 9020 asection **list;
9021 bfd_size_type stub14_group_size;
9022 bfd_boolean suppress_size_errors;
9023
9024 suppress_size_errors = FALSE;
9025 stub14_group_size = stub_group_size;
9026 if (stub_group_size == 1)
9027 {
9028 /* Default values. */
9029 if (stubs_always_before_branch)
9030 {
9031 stub_group_size = 0x1e00000;
9032 stub14_group_size = 0x7800;
9033 }
9034 else
9035 {
9036 stub_group_size = 0x1c00000;
9037 stub14_group_size = 0x7000;
9038 }
9039 suppress_size_errors = TRUE;
9040 }
9041
9042 list = htab->input_list + htab->top_index;
734b6cf9 9043 do
721956f4 9044 {
734b6cf9
AM		 9045 asection *tail = *list;
9046 while (tail != NULL)
721956f4 9047 {
734b6cf9
AM		 9048 asection *curr;
9049 asection *prev;
9050 bfd_size_type total;
9051 bfd_boolean big_sec;
9052 bfd_vma curr_toc;
9053
9054 curr = tail;
eea6121a 9055 total = tail->size;
7c8fe5c4
AM		 9056 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9057 ? stub14_group_size : stub_group_size);
9058 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 9059 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9060 tail->owner, tail);
734b6cf9
AM		 9061 curr_toc = htab->stub_group[tail->id].toc_off;
9062
9063 while ((prev = PREV_SEC (curr)) != NULL
9064 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM		 9065 < (ppc64_elf_section_data (prev)->has_14bit_branch
9066 ? stub14_group_size : stub_group_size))
ad8e1ba5 9067 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 9068 curr = prev;
9069
9070 /* OK, the size from the start of CURR to the end is less
9071 than stub_group_size and thus can be handled by one stub
9072 section. (or the tail section is itself larger than
9073 stub_group_size, in which case we may be toast.) We
9074 should really be keeping track of the total size of stubs
9075 added here, as stubs contribute to the final output
9076 section size. That's a little tricky, and this way will
9077 only break if stubs added make the total size more than
9078 2^25, ie. for the default stub_group_size, if stubs total
9079 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9080 do
721956f4
AM		 9081 {
9082 prev = PREV_SEC (tail);
734b6cf9 9083 /* Set up this stub group. */
721956f4
AM		 9084 htab->stub_group[tail->id].link_sec = curr;
9085 }
734b6cf9
AM		 9086 while (tail != curr && (tail = prev) != NULL);
9087
9088 /* But wait, there's more! Input sections up to stub_group_size
9089 bytes before the stub section can be handled by it too.
9090 Don't do this if we have a really large section after the
9091 stubs, as adding more stubs increases the chance that
9092 branches may not reach into the stub section. */
9093 if (!stubs_always_before_branch && !big_sec)
9094 {
9095 total = 0;
9096 while (prev != NULL
9097 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM		 9098 < (ppc64_elf_section_data (prev)->has_14bit_branch
9099 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 9100 && htab->stub_group[prev->id].toc_off == curr_toc)
9101 {
9102 tail = prev;
9103 prev = PREV_SEC (tail);
9104 htab->stub_group[tail->id].link_sec = curr;
9105 }
9106 }
9107 tail = prev;
721956f4
AM		 9108 }
9109 }
734b6cf9
AM		 9110 while (list-- != htab->input_list);
9111 free (htab->input_list);
721956f4
AM		 9112#undef PREV_SEC
9113}
9114
721956f4
AM		 9115/* Determine and set the size of the stub section for a final link.
9116
9117 The basic idea here is to examine all the relocations looking for
9118 PC-relative calls to a target that is unreachable with a "bl"
9119 instruction. */
9120
b34976b6 9121bfd_boolean
4ce794b7 9122ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 9123 struct bfd_link_info *info,
9124 bfd_signed_vma group_size,
9125 asection *(*add_stub_section) (const char *, asection *),
9126 void (*layout_sections_again) (void))
721956f4
AM		 9127{
9128 bfd_size_type stub_group_size;
b34976b6 9129 bfd_boolean stubs_always_before_branch;
721956f4
AM		 9130 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9131
9132 /* Stash our params away. */
721956f4
AM		 9133 htab->add_stub_section = add_stub_section;
9134 htab->layout_sections_again = layout_sections_again;
9135 stubs_always_before_branch = group_size < 0;
9136 if (group_size < 0)
9137 stub_group_size = -group_size;
9138 else
9139 stub_group_size = group_size;
721956f4
AM		 9140
9141 group_sections (htab, stub_group_size, stubs_always_before_branch);
9142
721956f4
AM		 9143 while (1)
9144 {
9145 bfd *input_bfd;
9146 unsigned int bfd_indx;
9147 asection *stub_sec;
721956f4
AM		 9148
9149 htab->stub_iteration += 1;
721956f4
AM		 9150
9151 for (input_bfd = info->input_bfds, bfd_indx = 0;
9152 input_bfd != NULL;
9153 input_bfd = input_bfd->link_next, bfd_indx++)
9154 {
9155 Elf_Internal_Shdr *symtab_hdr;
9156 asection *section;
6cdc0ccc 9157 Elf_Internal_Sym *local_syms = NULL;
721956f4 9158
67f93c31
AM		 9159 if (!is_ppc64_elf_target (input_bfd->xvec))
9160 continue;
9161
721956f4
AM		 9162 /* We'll need the symbol table in a second. */
9163 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9164 if (symtab_hdr->sh_info == 0)
9165 continue;
9166
721956f4
AM		 9167 /* Walk over each section attached to the input bfd. */
9168 for (section = input_bfd->sections;
9169 section != NULL;
9170 section = section->next)
9171 {
721956f4 9172 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 9173
9174 /* If there aren't any relocs, then there's nothing more
9175 to do. */
9176 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 9177 || (section->flags & SEC_ALLOC) == 0
9178 || (section->flags & SEC_LOAD) == 0
9179 || (section->flags & SEC_CODE) == 0
721956f4
AM		 9180 || section->reloc_count == 0)
9181 continue;
9182
9183 /* If this section is a link-once section that will be
9184 discarded, then don't create any stubs. */
9185 if (section->output_section == NULL
9186 || section->output_section->owner != output_bfd)
9187 continue;
9188
1e2f5b6e
AM		 9189 /* Get the relocs. */
9190 internal_relocs
4ce794b7 9191 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9192 info->keep_memory);
721956f4 9193 if (internal_relocs == NULL)
1e2f5b6e 9194 goto error_ret_free_local;
721956f4
AM		 9195
9196 /* Now examine each relocation. */
9197 irela = internal_relocs;
9198 irelaend = irela + section->reloc_count;
9199 for (; irela < irelaend; irela++)
9200 {
4ce794b7
AM		 9201 enum elf_ppc64_reloc_type r_type;
9202 unsigned int r_indx;
721956f4
AM		 9203 enum ppc_stub_type stub_type;
9204 struct ppc_stub_hash_entry *stub_entry;
8387904d 9205 asection *sym_sec, *code_sec;
721956f4
AM		 9206 bfd_vma sym_value;
9207 bfd_vma destination;
8843416a 9208 bfd_boolean ok_dest;
721956f4 9209 struct ppc_link_hash_entry *hash;
8387904d 9210 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 9211 struct elf_link_hash_entry *h;
9212 Elf_Internal_Sym *sym;
721956f4
AM		 9213 char *stub_name;
9214 const asection *id_sec;
8387904d 9215 long *opd_adjust;
721956f4
AM		 9216
9217 r_type = ELF64_R_TYPE (irela->r_info);
9218 r_indx = ELF64_R_SYM (irela->r_info);
9219
4ce794b7 9220 if (r_type >= R_PPC64_max)
721956f4
AM		 9221 {
9222 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9223 goto error_ret_free_internal;
721956f4
AM		 9224 }
9225
9226 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 9227 if (r_type != R_PPC64_REL24
9228 && r_type != R_PPC64_REL14
9229 && r_type != R_PPC64_REL14_BRTAKEN
9230 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 9231 continue;
9232
9233 /* Now determine the call target, its name, value,
9234 section. */
411e1bfb
AM		 9235 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9236 r_indx, input_bfd))
9237 goto error_ret_free_internal;
9238 hash = (struct ppc_link_hash_entry *) h;
9239
8843416a 9240 ok_dest = FALSE;
8387904d 9241 fdh = NULL;
7fe2b9a6 9242 sym_value = 0;
411e1bfb 9243 if (hash == NULL)
721956f4 9244 {
411e1bfb 9245 sym_value = sym->st_value;
8843416a 9246 ok_dest = TRUE;
721956f4 9247 }
7fe2b9a6
AM		 9248 else if (hash->elf.root.type == bfd_link_hash_defined
9249 || hash->elf.root.type == bfd_link_hash_defweak)
9250 {
9251 sym_value = hash->elf.root.u.def.value;
9252 if (sym_sec->output_section != NULL)
9253 ok_dest = TRUE;
9254 }
9255 else if (hash->elf.root.type == bfd_link_hash_undefweak
9256 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9257 {
99877b66 9258 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 9259 use the func descriptor sym instead if it is
9260 defined. */
ceb1f1ef 9261 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 9262 && (fdh = get_fdh (hash, htab)) != NULL)
9263 {
8387904d
AM		 9264 if (fdh->elf.root.type == bfd_link_hash_defined
9265 || fdh->elf.root.type == bfd_link_hash_defweak)
9266 {
9267 sym_sec = fdh->elf.root.u.def.section;
9268 sym_value = fdh->elf.root.u.def.value;
9269 if (sym_sec->output_section != NULL)
9270 ok_dest = TRUE;
9271 }
99877b66
AM		 9272 else
9273 fdh = NULL;
8387904d 9274 }
7fe2b9a6
AM		 9275 }
9276 else
9277 {
9278 bfd_set_error (bfd_error_bad_value);
9279 goto error_ret_free_internal;
721956f4
AM		 9280 }
9281
8843416a
AM		 9282 destination = 0;
9283 if (ok_dest)
9284 {
9285 sym_value += irela->r_addend;
9286 destination = (sym_value
9287 + sym_sec->output_offset
9288 + sym_sec->output_section->vma);
9289 }
9290
8387904d
AM		 9291 code_sec = sym_sec;
9292 opd_adjust = get_opd_info (sym_sec);
9293 if (opd_adjust != NULL)
9294 {
9295 bfd_vma dest;
9296
9297 if (hash == NULL)
9298 {
3f764659 9299 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 9300 if (adjust == -1)
9301 continue;
9302 sym_value += adjust;
9303 }
9304 dest = opd_entry_value (sym_sec, sym_value,
9305 &code_sec, &sym_value);
9306 if (dest != (bfd_vma) -1)
9307 {
9308 destination = dest;
9309 if (fdh != NULL)
9310 {
9311 /* Fixup old ABI sym to point at code
9312 entry. */
99877b66 9313 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9314 hash->elf.root.u.def.section = code_sec;
9315 hash->elf.root.u.def.value = sym_value;
9316 }
9317 }
9318 }
9319
721956f4
AM		 9320 /* Determine what (if any) linker stub is needed. */
9321 stub_type = ppc_type_of_stub (section, irela, &hash,
9322 destination);
ad8e1ba5
AM		 9323
9324 if (stub_type != ppc_stub_plt_call)
9325 {
9326 /* Check whether we need a TOC adjusting stub.
9327 Since the linker pastes together pieces from
9328 different object files when creating the
9329 _init and _fini functions, it may be that a
9330 call to what looks like a local sym is in
9331 fact a call needing a TOC adjustment. */
8387904d
AM		 9332 if (code_sec != NULL
9333 && code_sec->output_section != NULL
9334 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9335 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9336 && (code_sec->has_toc_reloc
9337 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9338 stub_type = ppc_stub_long_branch_r2off;
9339 }
9340
721956f4
AM		 9341 if (stub_type == ppc_stub_none)
9342 continue;
9343
411e1bfb
AM		 9344 /* __tls_get_addr calls might be eliminated. */
9345 if (stub_type != ppc_stub_plt_call
9346 && hash != NULL
8387904d
AM		 9347 && (hash == htab->tls_get_addr
9348 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9349 && section->has_tls_reloc
9350 && irela != internal_relocs)
9351 {
9352 /* Get tls info. */
e7b938ca 9353 char *tls_mask;
411e1bfb 9354
0d4792f7 9355 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9356 irela - 1, input_bfd))
9357 goto error_ret_free_internal;
e7b938ca 9358 if (*tls_mask != 0)
411e1bfb
AM		 9359 continue;
9360 }
9361
721956f4
AM		 9362 /* Support for grouping stub sections. */
9363 id_sec = htab->stub_group[section->id].link_sec;
9364
9365 /* Get the name of this stub. */
9366 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9367 if (!stub_name)
9368 goto error_ret_free_internal;
9369
9370 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9371 stub_name, FALSE, FALSE);
721956f4
AM		 9372 if (stub_entry != NULL)
9373 {
9374 /* The proper stub has already been created. */
9375 free (stub_name);
9376 continue;
9377 }
9378
9379 stub_entry = ppc_add_stub (stub_name, section, htab);
9380 if (stub_entry == NULL)
9381 {
9382 free (stub_name);
6cdc0ccc
AM		 9383 error_ret_free_internal:
9384 if (elf_section_data (section)->relocs == NULL)
9385 free (internal_relocs);
9386 error_ret_free_local:
9387 if (local_syms != NULL
9388 && (symtab_hdr->contents
9389 != (unsigned char *) local_syms))
9390 free (local_syms);
b34976b6 9391 return FALSE;
721956f4
AM		 9392 }
9393
ad8e1ba5 9394 stub_entry->stub_type = stub_type;
721956f4 9395 stub_entry->target_value = sym_value;
8387904d 9396 stub_entry->target_section = code_sec;
721956f4 9397 stub_entry->h = hash;
411e1bfb 9398 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9399
9400 if (stub_entry->h != NULL)
9401 htab->stub_globals += 1;
721956f4
AM		 9402 }
9403
9404 /* We're done with the internal relocs, free them. */
6cdc0ccc 9405 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9406 free (internal_relocs);
721956f4 9407 }
6cdc0ccc
AM		 9408
9409 if (local_syms != NULL
9410 && symtab_hdr->contents != (unsigned char *) local_syms)
9411 {
9412 if (!info->keep_memory)
9413 free (local_syms);
9414 else
9415 symtab_hdr->contents = (unsigned char *) local_syms;
9416 }
721956f4
AM		 9417 }
9418
5c3dead3 9419 /* We may have added some stubs. Find out the new size of the
721956f4
AM		 9420 stub sections. */
9421 for (stub_sec = htab->stub_bfd->sections;
9422 stub_sec != NULL;
9423 stub_sec = stub_sec->next)
e717da7e 9424 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9425 {
5c3dead3 9426 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 9427 stub_sec->size = 0;
9428 stub_sec->reloc_count = 0;
9429 }
eea6121a
AM		 9430
9431 htab->brlt->size = 0;
ee75fd95 9432 if (htab->relbrlt != NULL)
eea6121a 9433 htab->relbrlt->size = 0;
721956f4 9434
63bc6f6c 9435 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9436
5c3dead3
AM		 9437 for (stub_sec = htab->stub_bfd->sections;
9438 stub_sec != NULL;
9439 stub_sec = stub_sec->next)
9440 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9441 && stub_sec->rawsize != stub_sec->size)
9442 break;
9443
9444 /* Exit from this loop when no stubs have been added, and no stubs
9445 have changed size. */
9446 if (stub_sec == NULL)
9447 break;
9448
721956f4
AM		 9449 /* Ask the linker to do its stuff. */
9450 (*htab->layout_sections_again) ();
9451 }
9452
c456f082 9453 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9454 section is empty, but it's too late. If we strip sections here,
9455 the dynamic symbol table is corrupted since the section symbol
9456 for the stripped section isn't written. */
721956f4 9457
b34976b6 9458 return TRUE;
721956f4
AM		 9459}
9460
9461/* Called after we have determined section placement. If sections
805fc799 9462 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9463
805fc799 9464bfd_vma
4ce794b7 9465ppc64_elf_toc (bfd *obfd)
721956f4 9466{
805fc799
AM		 9467 asection *s;
9468 bfd_vma TOCstart;
721956f4 9469
805fc799
AM		 9470 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9471 order. The TOC starts where the first of these sections starts. */
9472 s = bfd_get_section_by_name (obfd, ".got");
9473 if (s == NULL)
9474 s = bfd_get_section_by_name (obfd, ".toc");
9475 if (s == NULL)
9476 s = bfd_get_section_by_name (obfd, ".tocbss");
9477 if (s == NULL)
9478 s = bfd_get_section_by_name (obfd, ".plt");
9479 if (s == NULL)
9480 {
9481 /* This may happen for
9482 o references to TOC base (SYM@toc / TOC[tc0]) without a
9483 .toc directive
9484 o bad linker script
9485 o --gc-sections and empty TOC sections
9486
9487 FIXME: Warn user? */
9488
9489 /* Look for a likely section. We probably won't even be
9490 using TOCstart. */
9491 for (s = obfd->sections; s != NULL; s = s->next)
9492 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9493 == (SEC_ALLOC | SEC_SMALL_DATA))
9494 break;
721956f4 9495 if (s == NULL)
805fc799
AM		 9496 for (s = obfd->sections; s != NULL; s = s->next)
9497 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9498 == (SEC_ALLOC | SEC_SMALL_DATA))
9499 break;
721956f4 9500 if (s == NULL)
805fc799
AM		 9501 for (s = obfd->sections; s != NULL; s = s->next)
9502 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9503 break;
721956f4 9504 if (s == NULL)
805fc799
AM		 9505 for (s = obfd->sections; s != NULL; s = s->next)
9506 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9507 break;
9508 }
721956f4 9509
805fc799
AM		 9510 TOCstart = 0;
9511 if (s != NULL)
9512 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9513
805fc799 9514 return TOCstart;
721956f4
AM		 9515}
9516
9517/* Build all the stubs associated with the current output file.
9518 The stubs are kept in a hash table attached to the main linker
9519 hash table. This function is called via gldelf64ppc_finish. */
9520
b34976b6 9521bfd_boolean
4ce794b7
AM		 9522ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9523 struct bfd_link_info *info,
9524 char **stats)
5d1634d7
AM		 9525{
9526 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9527 asection *stub_sec;
5d1634d7 9528 bfd_byte *p;
e717da7e 9529 int stub_sec_count = 0;
5d1634d7 9530
ad8e1ba5 9531 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9532
9533 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9534 for (stub_sec = htab->stub_bfd->sections;
9535 stub_sec != NULL;
9536 stub_sec = stub_sec->next)
eea6121a
AM		 9537 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9538 && stub_sec->size != 0)
e717da7e 9539 {
eea6121a
AM		 9540 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9541 if (stub_sec->contents == NULL)
9542 return FALSE;
9543 /* We want to check that built size is the same as calculated
9544 size. rawsize is a convenient location to use. */
9545 stub_sec->rawsize = stub_sec->size;
9546 stub_sec->size = 0;
e717da7e 9547 }
5d1634d7 9548
23eb7e01 9549 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9550 {
9f951329 9551 unsigned int indx;
ad8e1ba5 9552 bfd_vma plt0;
9f951329 9553
721956f4 9554 /* Build the .glink plt call stub. */
97b639ba
AM		 9555 if (htab->emit_stub_syms)
9556 {
9557 struct elf_link_hash_entry *h;
9558 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9559 if (h == NULL)
9560 return FALSE;
9561 if (h->root.type == bfd_link_hash_new)
9562 {
9563 h->root.type = bfd_link_hash_defined;
9564 h->root.u.def.section = htab->glink;
ee4bf8d2 9565 h->root.u.def.value = 8;
f5385ebf
AM		 9566 h->ref_regular = 1;
9567 h->def_regular = 1;
9568 h->ref_regular_nonweak = 1;
9569 h->forced_local = 1;
9570 h->non_elf = 0;
97b639ba
AM		 9571 }
9572 }
4ce794b7 9573 p = htab->glink->contents;
ee4bf8d2
AM		 9574 plt0 = (htab->plt->output_section->vma
9575 + htab->plt->output_offset
9576 - (htab->glink->output_section->vma
9577 + htab->glink->output_offset
9578 + 16));
9579 bfd_put_64 (htab->glink->owner, plt0, p);
9580 p += 8;
9581 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9582 p += 4;
ee4bf8d2 9583 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9584 p += 4;
ee4bf8d2 9585 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9586 p += 4;
ee4bf8d2 9587 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9588 p += 4;
ee4bf8d2 9589 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9590 p += 4;
ee4bf8d2 9591 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9592 p += 4;
ee4bf8d2 9593 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9594 p += 4;
4ce794b7 9595 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9596 p += 4;
4ce794b7 9597 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9598 p += 4;
4ce794b7 9599 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9600 p += 4;
4ce794b7 9601 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9602 p += 4;
ee4bf8d2
AM		 9603 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9604 {
9605 bfd_put_32 (htab->glink->owner, NOP, p);
9606 p += 4;
9607 }
ad8e1ba5 9608
9f951329
AM		 9609 /* Build the .glink lazy link call stubs. */
9610 indx = 0;
eea6121a 9611 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9612 {
9613 if (indx < 0x8000)
9614 {
4ce794b7 9615 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9616 p += 4;
9617 }
9618 else
9619 {
4ce794b7 9620 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9621 p += 4;
4ce794b7 9622 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9623 p += 4;
9624 }
4ce794b7 9625 bfd_put_32 (htab->glink->owner,
ee4bf8d2 9626 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 9627 indx++;
9f951329
AM		 9628 p += 4;
9629 }
eea6121a 9630 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9631 }
5d1634d7 9632
eea6121a 9633 if (htab->brlt->size != 0)
721956f4 9634 {
4ce794b7 9635 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9636 htab->brlt->size);
4ce794b7 9637 if (htab->brlt->contents == NULL)
b34976b6 9638 return FALSE;
721956f4 9639 }
ee75fd95 9640 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9641 {
9642 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9643 htab->relbrlt->size);
63bc6f6c
AM		 9644 if (htab->relbrlt->contents == NULL)
9645 return FALSE;
9646 }
5d1634d7 9647
721956f4
AM		 9648 /* Build the stubs as directed by the stub hash table. */
9649 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9650
aa8a7074
AM		 9651 if (htab->relbrlt != NULL)
9652 htab->relbrlt->reloc_count = 0;
9653
721956f4
AM		 9654 for (stub_sec = htab->stub_bfd->sections;
9655 stub_sec != NULL;
9656 stub_sec = stub_sec->next)
e717da7e
AM		 9657 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9658 {
9659 stub_sec_count += 1;
eea6121a 9660 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9661 break;
9662 }
5d1634d7 9663
721956f4 9664 if (stub_sec != NULL
eea6121a 9665 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9666 {
b34976b6 9667 htab->stub_error = TRUE;
721956f4 9668 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9669 }
721956f4 9670
d2a300cf
AM		 9671 if (htab->stub_error)
9672 return FALSE;
9673
9674 if (stats != NULL)
9675 {
9676 *stats = bfd_malloc (500);
9677 if (*stats == NULL)
9678 return FALSE;
9679
ee75fd95 9680 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9681 " branch %lu\n"
9682 " toc adjust %lu\n"
9683 " long branch %lu\n"
9684 " long toc adj %lu\n"
9685 " plt call %lu"),
e717da7e 9686 stub_sec_count,
ee75fd95 9687 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9688 htab->stub_count[ppc_stub_long_branch - 1],
9689 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9690 htab->stub_count[ppc_stub_plt_branch - 1],
9691 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9692 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9693 }
9694 return TRUE;
5bd4f169
AM		 9695}
9696
99877b66
AM		 9697/* This function undoes the changes made by add_symbol_adjust. */
9698
9699static bfd_boolean
9700undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9701{
9702 struct ppc_link_hash_entry *eh;
9703
9704 if (h->root.type == bfd_link_hash_indirect)
9705 return TRUE;
9706
9707 if (h->root.type == bfd_link_hash_warning)
9708 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9709
9710 eh = (struct ppc_link_hash_entry *) h;
9711 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9712 return TRUE;
9713
9714 eh->elf.root.type = bfd_link_hash_undefined;
9715 return TRUE;
9716}
9717
9718void
9719ppc64_elf_restore_symbols (struct bfd_link_info *info)
9720{
9721 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9722 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9723}
9724
60124e18
AM		 9725/* What to do when ld finds relocations against symbols defined in
9726 discarded sections. */
9727
9728static unsigned int
9729ppc64_elf_action_discarded (asection *sec)
9730{
9731 if (strcmp (".opd", sec->name) == 0)
9732 return 0;
9733
9734 if (strcmp (".toc", sec->name) == 0)
9735 return 0;
9736
bce50a28
JJ		 9737 if (strcmp (".toc1", sec->name) == 0)
9738 return 0;
9739
60124e18
AM		 9740 return _bfd_elf_default_action_discarded (sec);
9741}
9742
5bd4f169
AM		 9743/* The RELOCATE_SECTION function is called by the ELF backend linker
9744 to handle the relocations for a section.
9745
9746 The relocs are always passed as Rela structures; if the section
9747 actually uses Rel structures, the r_addend field will always be
9748 zero.
9749
9750 This function is responsible for adjust the section contents as
9751 necessary, and (if using Rela relocs and generating a
1049f94e 9752 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9753 necessary.
9754
9755 This function does not have to worry about setting the reloc
9756 address or the reloc symbol index.
9757
9758 LOCAL_SYMS is a pointer to the swapped in local symbols.
9759
9760 LOCAL_SECTIONS is an array giving the section in the input file
9761 corresponding to the st_shndx field of each local symbol.
9762
9763 The global hash table entry for the global symbols can be found
9764 via elf_sym_hashes (input_bfd).
9765
1049f94e 9766 When generating relocatable output, this function must handle
5bd4f169
AM		 9767 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9768 going to be the section symbol corresponding to the output
9769 section, which means that the addend must be adjusted
9770 accordingly. */
9771
b34976b6 9772static bfd_boolean
4ce794b7
AM		 9773ppc64_elf_relocate_section (bfd *output_bfd,
9774 struct bfd_link_info *info,
9775 bfd *input_bfd,
9776 asection *input_section,
9777 bfd_byte *contents,
9778 Elf_Internal_Rela *relocs,
9779 Elf_Internal_Sym *local_syms,
9780 asection **local_sections)
5bd4f169 9781{
65f38f15 9782 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9783 Elf_Internal_Shdr *symtab_hdr;
9784 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9785 Elf_Internal_Rela *rel;
9786 Elf_Internal_Rela *relend;
411e1bfb
AM		 9787 Elf_Internal_Rela outrel;
9788 bfd_byte *loc;
411e1bfb 9789 struct got_entry **local_got_ents;
5bd4f169 9790 bfd_vma TOCstart;
b34976b6
AM		 9791 bfd_boolean ret = TRUE;
9792 bfd_boolean is_opd;
96e0dda4 9793 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9794 bfd_boolean is_power4 = FALSE;
4fe5ca5b 9795 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 9796
65f38f15 9797 /* Initialize howto table if needed. */
5bd4f169 9798 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9799 ppc_howto_init ();
9800
65f38f15 9801 htab = ppc_hash_table (info);
ee75fd95
AM		 9802
9803 /* Don't relocate stub sections. */
9804 if (input_section->owner == htab->stub_bfd)
9805 return TRUE;
9806
411e1bfb 9807 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9808 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9809 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9810 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 9811 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 9812
5bd4f169
AM		 9813 rel = relocs;
9814 relend = relocs + input_section->reloc_count;
9815 for (; rel < relend; rel++)
9816 {
04c9666a 9817 enum elf_ppc64_reloc_type r_type;
4cc603a5 9818 bfd_vma addend, orig_addend;
5bd4f169
AM		 9819 bfd_reloc_status_type r;
9820 Elf_Internal_Sym *sym;
9821 asection *sec;
039b3fef
AM		 9822 struct elf_link_hash_entry *h_elf;
9823 struct ppc_link_hash_entry *h;
9824 struct ppc_link_hash_entry *fdh;
5bd4f169 9825 const char *sym_name;
0d4792f7 9826 unsigned long r_symndx, toc_symndx;
951fd09b 9827 char tls_mask, tls_gd, tls_type;
0d4792f7 9828 char sym_type;
5bd4f169 9829 bfd_vma relocation;
b34976b6
AM		 9830 bfd_boolean unresolved_reloc;
9831 bfd_boolean warned;
50bc7936 9832 unsigned long insn, mask;
721956f4
AM		 9833 struct ppc_stub_hash_entry *stub_entry;
9834 bfd_vma max_br_offset;
9835 bfd_vma from;
5bd4f169 9836
4ce794b7 9837 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9838 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9839
9840 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9841 symbol of the previous ADDR64 reloc. The symbol gives us the
9842 proper TOC base to use. */
9843 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9844 && rel != relocs
9845 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9846 && is_opd)
9847 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9848
4ce794b7
AM		 9849 sym = NULL;
9850 sec = NULL;
039b3fef 9851 h_elf = NULL;
4ce794b7 9852 sym_name = NULL;
b34976b6
AM		 9853 unresolved_reloc = FALSE;
9854 warned = FALSE;
4cc603a5 9855 orig_addend = rel->r_addend;
65f38f15 9856
0b13192e 9857 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9858 {
9859 /* It's a local symbol. */
4025353c
AM		 9860 long *opd_adjust;
9861
5bd4f169
AM		 9862 sym = local_syms + r_symndx;
9863 sec = local_sections[r_symndx];
26c61ae5 9864 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9865 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9866 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9867 opd_adjust = get_opd_info (sec);
9868 if (opd_adjust != NULL)
1e2f5b6e 9869 {
3f764659 9870 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9871 if (adjust == -1)
9872 relocation = 0;
9873 else
4cc603a5
AM		 9874 {
9875 /* If this is a relocation against the opd section sym
9876 and we have edited .opd, adjust the reloc addend so
9877 that ld -r and ld --emit-relocs output is correct.
9878 If it is a reloc against some other .opd symbol,
9879 then the symbol value will be adjusted later. */
9880 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
9881 rel->r_addend += adjust;
9882 else
9883 relocation += adjust;
9884 }
1e2f5b6e 9885 }
4cc603a5
AM		 9886 if (info->relocatable)
9887 continue;
5bd4f169
AM		 9888 }
9889 else
9890 {
4cc603a5
AM		 9891 if (info->relocatable)
9892 continue;
b2a8e766
AM		 9893 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9894 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9895 h_elf, sec, relocation,
b2a8e766 9896 unresolved_reloc, warned);
039b3fef
AM		 9897 sym_name = h_elf->root.root.string;
9898 sym_type = h_elf->type;
5bd4f169 9899 }
039b3fef 9900 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9901
951fd09b
AM		 9902 /* TLS optimizations. Replace instruction sequences and relocs
9903 based on information we collected in tls_optimize. We edit
9904 RELOCS so that --emit-relocs will output something sensible
9905 for the final instruction stream. */
9906 tls_mask = 0;
9907 tls_gd = 0;
0d4792f7 9908 toc_symndx = 0;
d881513a 9909 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9910 {
9911 if (h != NULL)
039b3fef 9912 tls_mask = h->tls_mask;
411e1bfb
AM		 9913 else if (local_got_ents != NULL)
9914 {
e7b938ca
AM		 9915 char *lgot_masks;
9916 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9917 tls_mask = lgot_masks[r_symndx];
411e1bfb 9918 }
0d4792f7
AM		 9919 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9920 {
9921 /* Check for toc tls entries. */
9922 char *toc_tls;
9923
9924 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9925 rel, input_bfd))
9926 return FALSE;
9927
9928 if (toc_tls)
9929 tls_mask = *toc_tls;
9930 }
9931 }
9932
9933 /* Check that tls relocs are used with tls syms, and non-tls
9934 relocs are used with non-tls syms. */
9935 if (r_symndx != 0
9936 && r_type != R_PPC64_NONE
9937 && (h == NULL
039b3fef
AM		 9938 || h->elf.root.type == bfd_link_hash_defined
9939 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9940 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9941 {
9942 if (r_type == R_PPC64_TLS && tls_mask != 0)
9943 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9944 ;
9945 else
9946 (*_bfd_error_handler)
9947 (sym_type == STT_TLS
d003868e
AM		 9948 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9949 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9950 input_bfd,
9951 input_section,
0d4792f7
AM		 9952 (long) rel->r_offset,
9953 ppc64_elf_howto_table[r_type]->name,
9954 sym_name);
411e1bfb
AM		 9955 }
9956
9957 /* Ensure reloc mapping code below stays sane. */
9958 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9959 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9960 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9961 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9962 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9963 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9964 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9965 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9966 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9967 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9968 abort ();
0d4792f7 9969
411e1bfb
AM		 9970 switch (r_type)
9971 {
9972 default:
411e1bfb
AM		 9973 break;
9974
9975 case R_PPC64_TOC16:
9976 case R_PPC64_TOC16_LO:
9977 case R_PPC64_TOC16_DS:
9978 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9979 {
9980 /* Check for toc tls entries. */
9981 char *toc_tls;
951fd09b 9982 int retval;
411e1bfb 9983
0d4792f7
AM		 9984 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9985 rel, input_bfd);
951fd09b 9986 if (retval == 0)
411e1bfb
AM		 9987 return FALSE;
9988
9989 if (toc_tls)
9990 {
951fd09b 9991 tls_mask = *toc_tls;
411e1bfb
AM		 9992 if (r_type == R_PPC64_TOC16_DS
9993 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9994 {
9995 if (tls_mask != 0
9996 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9997 goto toctprel;
9998 }
411e1bfb 9999 else
951fd09b
AM		 10000 {
10001 /* If we found a GD reloc pair, then we might be
10002 doing a GD->IE transition. */
10003 if (retval == 2)
10004 {
10005 tls_gd = TLS_TPRELGD;
10006 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10007 goto tls_get_addr_check;
10008 }
10009 else if (retval == 3)
10010 {
10011 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10012 goto tls_get_addr_check;
10013 }
10014 }
411e1bfb
AM		 10015 }
10016 }
10017 break;
10018
10019 case R_PPC64_GOT_TPREL16_DS:
10020 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 10021 if (tls_mask != 0
10022 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10023 {
81407a69 10024 toctprel:
4fe5ca5b 10025 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 10026 insn &= 31 << 21;
10027 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10028 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10029 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 10030 if (toc_symndx != 0)
10031 {
10032 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10033 /* We changed the symbol. Start over in order to
10034 get h, sym, sec etc. right. */
10035 rel--;
10036 continue;
10037 }
10038 else
10039 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10040 }
10041 break;
10042
10043 case R_PPC64_TLS:
951fd09b
AM		 10044 if (tls_mask != 0
10045 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10046 {
50bc7936 10047 bfd_vma rtra;
411e1bfb 10048 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10049 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 10050 == ((31 << 26) | (13 << 11)))
10051 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10052 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 10053 == ((31 << 26) | (13 << 16)))
10054 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10055 else
10056 abort ();
10057 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10058 /* add -> addi. */
10059 insn = 14 << 26;
10060 else if ((insn & (31 << 1)) == 23 << 1
10061 && ((insn & (31 << 6)) < 14 << 6
10062 || ((insn & (31 << 6)) >= 16 << 6
10063 && (insn & (31 << 6)) < 24 << 6)))
10064 /* load and store indexed -> dform. */
10065 insn = (32 | ((insn >> 6) & 31)) << 26;
10066 else if ((insn & (31 << 1)) == 21 << 1
10067 && (insn & (0x1a << 6)) == 0)
10068 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10069 insn = (((58 | ((insn >> 6) & 4)) << 26)
10070 | ((insn >> 6) & 1));
10071 else if ((insn & (31 << 1)) == 21 << 1
10072 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10073 /* lwax -> lwa. */
10074 insn = (58 << 26) | 2;
10075 else
10076 abort ();
10077 insn |= rtra;
10078 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10079 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 10080 PPC64_TPREL16_LO which is at low-order half-word. */
10081 rel->r_offset += d_offset;
0d4792f7
AM		 10082 r_type = R_PPC64_TPREL16_LO;
10083 if (toc_symndx != 0)
10084 {
10085 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10086 /* We changed the symbol. Start over in order to
10087 get h, sym, sec etc. right. */
10088 rel--;
10089 continue;
10090 }
10091 else
10092 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10093 }
10094 break;
10095
411e1bfb
AM		 10096 case R_PPC64_GOT_TLSGD16_HI:
10097 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 10098 tls_gd = TLS_TPRELGD;
10099 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10100 goto tls_gdld_hi;
10101 break;
10102
411e1bfb
AM		 10103 case R_PPC64_GOT_TLSLD16_HI:
10104 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10105 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10106 {
951fd09b
AM		 10107 tls_gdld_hi:
10108 if ((tls_mask & tls_gd) != 0)
10109 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10110 + R_PPC64_GOT_TPREL16_DS);
10111 else
411e1bfb 10112 {
951fd09b 10113 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10114 rel->r_offset -= d_offset;
951fd09b 10115 r_type = R_PPC64_NONE;
411e1bfb 10116 }
951fd09b 10117 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10118 }
10119 break;
10120
951fd09b
AM		 10121 case R_PPC64_GOT_TLSGD16:
10122 case R_PPC64_GOT_TLSGD16_LO:
10123 tls_gd = TLS_TPRELGD;
10124 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10125 goto tls_get_addr_check;
10126 break;
411e1bfb 10127
951fd09b
AM		 10128 case R_PPC64_GOT_TLSLD16:
10129 case R_PPC64_GOT_TLSLD16_LO:
10130 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10131 {
10132 tls_get_addr_check:
10133 if (rel + 1 < relend)
411e1bfb 10134 {
951fd09b
AM		 10135 enum elf_ppc64_reloc_type r_type2;
10136 unsigned long r_symndx2;
10137 struct elf_link_hash_entry *h2;
10138 bfd_vma insn1, insn2, insn3;
10139 bfd_vma offset;
10140
10141 /* The next instruction should be a call to
10142 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 10143 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 10144 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
10145 if (r_symndx2 < symtab_hdr->sh_info
10146 || (r_type2 != R_PPC64_REL14
10147 && r_type2 != R_PPC64_REL14_BRTAKEN
10148 && r_type2 != R_PPC64_REL14_BRNTAKEN
10149 && r_type2 != R_PPC64_REL24))
10150 break;
10151
10152 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
10153 while (h2->root.type == bfd_link_hash_indirect
10154 || h2->root.type == bfd_link_hash_warning)
10155 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 10156 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
10157 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 10158 break;
10159
10160 /* OK, it checks out. Replace the call. */
10161 offset = rel[1].r_offset;
10162 insn1 = bfd_get_32 (output_bfd,
4fe5ca5b 10163 contents + rel->r_offset - d_offset);
951fd09b
AM		 10164 insn3 = bfd_get_32 (output_bfd,
10165 contents + offset + 4);
10166 if ((tls_mask & tls_gd) != 0)
411e1bfb 10167 {
951fd09b
AM		 10168 /* IE */
10169 insn1 &= (1 << 26) - (1 << 2);
10170 insn1 |= 58 << 26; /* ld */
10171 insn2 = 0x7c636a14; /* add 3,3,13 */
10172 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
10173 if ((tls_mask & TLS_EXPLICIT) == 0)
10174 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10175 + R_PPC64_GOT_TPREL16_DS);
10176 else
10177 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10178 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10179 }
10180 else
951fd09b
AM		 10181 {
10182 /* LE */
10183 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10184 insn2 = 0x38630000; /* addi 3,3,0 */
10185 if (tls_gd == 0)
10186 {
10187 /* Was an LD reloc. */
10188 r_symndx = 0;
e1918d23
AM		 10189 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10190 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 10191 }
0d4792f7
AM		 10192 else if (toc_symndx != 0)
10193 r_symndx = toc_symndx;
951fd09b
AM		 10194 r_type = R_PPC64_TPREL16_HA;
10195 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10196 rel[1].r_info = ELF64_R_INFO (r_symndx,
10197 R_PPC64_TPREL16_LO);
4fe5ca5b 10198 rel[1].r_offset += d_offset;
951fd09b
AM		 10199 }
10200 if (insn3 == NOP
10201 || insn3 == CROR_151515 || insn3 == CROR_313131)
10202 {
10203 insn3 = insn2;
10204 insn2 = NOP;
10205 rel[1].r_offset += 4;
10206 }
4fe5ca5b 10207 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
951fd09b
AM		 10208 bfd_put_32 (output_bfd, insn2, contents + offset);
10209 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 10210 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 10211 {
0d4792f7
AM		 10212 /* We changed the symbol. Start over in order
10213 to get h, sym, sec etc. right. */
951fd09b
AM		 10214 rel--;
10215 continue;
10216 }
411e1bfb 10217 }
411e1bfb 10218 }
411e1bfb
AM		 10219 break;
10220
10221 case R_PPC64_DTPMOD64:
951fd09b
AM		 10222 if (rel + 1 < relend
10223 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10224 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10225 {
951fd09b
AM		 10226 if ((tls_mask & TLS_GD) == 0)
10227 {
10228 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10229 if ((tls_mask & TLS_TPRELGD) != 0)
10230 r_type = R_PPC64_TPREL64;
10231 else
10232 {
4ce794b7 10233 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 10234 r_type = R_PPC64_NONE;
10235 }
10236 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10237 }
10238 }
10239 else
10240 {
10241 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10242 {
4ce794b7 10243 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10244 r_type = R_PPC64_NONE;
951fd09b 10245 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10246 }
411e1bfb
AM		 10247 }
10248 break;
10249
10250 case R_PPC64_TPREL64:
951fd09b 10251 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 10252 {
10253 r_type = R_PPC64_NONE;
10254 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10255 }
10256 break;
10257 }
10258
10259 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10260 insn = 0;
b25116a9
AM		 10261 max_br_offset = 1 << 25;
10262 addend = rel->r_addend;
65f38f15 10263 switch (r_type)
5bd4f169
AM		 10264 {
10265 default:
65f38f15 10266 break;
5bd4f169 10267
65f38f15
AM		 10268 /* Branch taken prediction relocations. */
10269 case R_PPC64_ADDR14_BRTAKEN:
10270 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 10271 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10272 /* Fall thru. */
65f38f15 10273
86c76c7b 10274 /* Branch not taken prediction relocations. */
65f38f15
AM		 10275 case R_PPC64_ADDR14_BRNTAKEN:
10276 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 10277 insn |= bfd_get_32 (output_bfd,
10278 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10279 /* Fall thru. */
86c76c7b 10280
b25116a9
AM		 10281 case R_PPC64_REL14:
10282 max_br_offset = 1 << 15;
10283 /* Fall thru. */
5bd4f169 10284
65f38f15 10285 case R_PPC64_REL24:
ad8e1ba5
AM		 10286 /* Calls to functions with a different TOC, such as calls to
10287 shared objects, need to alter the TOC pointer. This is
10288 done using a linkage stub. A REL24 branching to these
10289 linkage stubs needs to be followed by a nop, as the nop
10290 will be replaced with an instruction to restore the TOC
10291 base pointer. */
b25116a9 10292 stub_entry = NULL;
8387904d 10293 fdh = h;
ad8e1ba5 10294 if (((h != NULL
039b3fef
AM		 10295 && (((fdh = h->oh) != NULL
10296 && fdh->elf.plt.plist != NULL)
10297 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10298 || (sec != NULL
ad8e1ba5 10299 && sec->output_section != NULL
b25116a9 10300 && sec->id <= htab->top_id
ad8e1ba5
AM		 10301 && (htab->stub_group[sec->id].toc_off
10302 != htab->stub_group[input_section->id].toc_off)))
721956f4 10303 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 10304 rel, htab)) != NULL
10305 && (stub_entry->stub_type == ppc_stub_plt_call
10306 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10307 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10308 {
b25116a9 10309 bfd_boolean can_plt_call = FALSE;
721956f4 10310
eea6121a 10311 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10312 {
b25116a9
AM		 10313 unsigned long nop;
10314 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10315 if (nop == NOP
10316 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10317 {
4ce794b7 10318 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10319 contents + rel->r_offset + 4);
b25116a9 10320 can_plt_call = TRUE;
41bd81ab 10321 }
5bd4f169 10322 }
721956f4
AM		 10323
10324 if (!can_plt_call)
10325 {
ad8e1ba5
AM		 10326 if (stub_entry->stub_type == ppc_stub_plt_call)
10327 {
10328 /* If this is a plain branch rather than a branch
4fa1c237
AM		 10329 and link, don't require a nop. However, don't
10330 allow tail calls in a shared library as they
10331 will result in r2 being corrupted. */
b25116a9
AM		 10332 unsigned long br;
10333 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10334 if (info->executable && (br & 1) == 0)
b25116a9 10335 can_plt_call = TRUE;
15b552e9
AM		 10336 else
10337 stub_entry = NULL;
ad8e1ba5 10338 }
6ab189d5 10339 else if (h != NULL
039b3fef 10340 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10341 ".__libc_start_main") == 0)
10342 {
10343 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10344 can_plt_call = TRUE;
6ab189d5 10345 }
ad8e1ba5
AM		 10346 else
10347 {
10348 if (strcmp (input_section->output_section->name,
10349 ".init") == 0
10350 || strcmp (input_section->output_section->name,
10351 ".fini") == 0)
10352 (*_bfd_error_handler)
d003868e 10353 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10354 "not supported using your crt files; "
10355 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10356 input_bfd,
10357 input_section,
ad8e1ba5
AM		 10358 (long) rel->r_offset);
10359 else
10360 (*_bfd_error_handler)
d003868e 10361 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10362 "does not allow automatic multiple TOCs; "
10363 "recompile with -mminimal-toc or "
10364 "-fno-optimize-sibling-calls, "
10365 "or make `%s' extern"),
d003868e
AM		 10366 input_bfd,
10367 input_section,
ad8e1ba5
AM		 10368 (long) rel->r_offset,
10369 sym_name,
10370 sym_name);
10371 bfd_set_error (bfd_error_bad_value);
10372 ret = FALSE;
10373 }
721956f4
AM		 10374 }
10375
b25116a9
AM		 10376 if (can_plt_call
10377 && stub_entry->stub_type == ppc_stub_plt_call)
10378 unresolved_reloc = FALSE;
10379 }
10380
8387904d
AM		 10381 if (stub_entry == NULL
10382 && get_opd_info (sec) != NULL)
10383 {
10384 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 10385 bfd_vma off = (relocation + addend
10386 - sec->output_section->vma
10387 - sec->output_offset);
8387904d
AM		 10388 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10389 if (dest != (bfd_vma) -1)
10390 {
10391 relocation = dest;
10392 addend = 0;
10393 }
10394 }
10395
b25116a9
AM		 10396 /* If the branch is out of reach we ought to have a long
10397 branch stub. */
10398 from = (rel->r_offset
10399 + input_section->output_offset
10400 + input_section->output_section->vma);
10401
10402 if (stub_entry == NULL
4cc603a5 10403 && (relocation + addend - from + max_br_offset
b25116a9
AM		 10404 >= 2 * max_br_offset)
10405 && r_type != R_PPC64_ADDR14_BRTAKEN
10406 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10407 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10408 htab);
b25116a9
AM		 10409
10410 if (stub_entry != NULL)
10411 {
10412 /* Munge up the value and addend so that we call the stub
10413 rather than the procedure directly. */
10414 relocation = (stub_entry->stub_offset
10415 + stub_entry->stub_sec->output_offset
10416 + stub_entry->stub_sec->output_section->vma);
10417 addend = 0;
10418 }
10419
10420 if (insn != 0)
10421 {
10422 if (is_power4)
721956f4 10423 {
b25116a9
AM		 10424 /* Set 'a' bit. This is 0b00010 in BO field for branch
10425 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10426 for branch on CTR insns (BO == 1a00t or 1a01t). */
10427 if ((insn & (0x14 << 21)) == (0x04 << 21))
10428 insn |= 0x02 << 21;
10429 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10430 insn |= 0x08 << 21;
10431 else
10432 break;
10433 }
10434 else
10435 {
10436 /* Invert 'y' bit if not the default. */
4cc603a5 10437 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10438 insn ^= 0x01 << 21;
721956f4 10439 }
b25116a9
AM		 10440
10441 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10442 }
e86ce104 10443
06da1e8e
AM		 10444 /* NOP out calls to undefined weak functions.
10445 We can thus call a weak function without first
10446 checking whether the function is defined. */
b25116a9 10447 else if (h != NULL
039b3fef 10448 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10449 && r_type == R_PPC64_REL24
10450 && relocation == 0
4cc603a5 10451 && addend == 0)
e86ce104 10452 {
06da1e8e
AM		 10453 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10454 continue;
e86ce104 10455 }
65f38f15
AM		 10456 break;
10457 }
5bd4f169 10458
65f38f15 10459 /* Set `addend'. */
411e1bfb 10460 tls_type = 0;
65f38f15
AM		 10461 switch (r_type)
10462 {
10463 default:
10464 (*_bfd_error_handler)
d003868e
AM		 10465 (_("%B: unknown relocation type %d for symbol %s"),
10466 input_bfd, (int) r_type, sym_name);
5bd4f169 10467
65f38f15 10468 bfd_set_error (bfd_error_bad_value);
b34976b6 10469 ret = FALSE;
65f38f15 10470 continue;
5bd4f169 10471
65f38f15 10472 case R_PPC64_NONE:
411e1bfb 10473 case R_PPC64_TLS:
04c9666a
AM		 10474 case R_PPC64_GNU_VTINHERIT:
10475 case R_PPC64_GNU_VTENTRY:
65f38f15 10476 continue;
5bd4f169
AM		 10477
10478 /* GOT16 relocations. Like an ADDR16 using the symbol's
10479 address in the GOT as relocation value instead of the
411e1bfb 10480 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10481 symbol and put the symbol value there. */
411e1bfb
AM		 10482 case R_PPC64_GOT_TLSGD16:
10483 case R_PPC64_GOT_TLSGD16_LO:
10484 case R_PPC64_GOT_TLSGD16_HI:
10485 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10486 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10487 goto dogot;
10488
10489 case R_PPC64_GOT_TLSLD16:
10490 case R_PPC64_GOT_TLSLD16_LO:
10491 case R_PPC64_GOT_TLSLD16_HI:
10492 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10493 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10494 goto dogot;
10495
10496 case R_PPC64_GOT_TPREL16_DS:
10497 case R_PPC64_GOT_TPREL16_LO_DS:
10498 case R_PPC64_GOT_TPREL16_HI:
10499 case R_PPC64_GOT_TPREL16_HA:
10500 tls_type = TLS_TLS | TLS_TPREL;
10501 goto dogot;
10502
10503 case R_PPC64_GOT_DTPREL16_DS:
10504 case R_PPC64_GOT_DTPREL16_LO_DS:
10505 case R_PPC64_GOT_DTPREL16_HI:
10506 case R_PPC64_GOT_DTPREL16_HA:
10507 tls_type = TLS_TLS | TLS_DTPREL;
10508 goto dogot;
10509
65f38f15
AM		 10510 case R_PPC64_GOT16:
10511 case R_PPC64_GOT16_LO:
10512 case R_PPC64_GOT16_HI:
10513 case R_PPC64_GOT16_HA:
10514 case R_PPC64_GOT16_DS:
10515 case R_PPC64_GOT16_LO_DS:
411e1bfb 10516 dogot:
5bd4f169
AM		 10517 {
10518 /* Relocation is to the entry for this symbol in the global
10519 offset table. */
e717da7e 10520 asection *got;
d881513a 10521 bfd_vma *offp;
5bd4f169 10522 bfd_vma off;
d881513a 10523 unsigned long indx = 0;
65f38f15 10524
d881513a
AM		 10525 if (tls_type == (TLS_TLS | TLS_LD)
10526 && (h == NULL
f5385ebf 10527 || !h->elf.def_dynamic))
e717da7e 10528 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10529 else
5bd4f169 10530 {
d881513a 10531 struct got_entry *ent;
5bd4f169 10532
d881513a
AM		 10533 if (h != NULL)
10534 {
10535 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10536 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10537 &h->elf)
d881513a 10538 || (info->shared
039b3fef 10539 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10540 /* This is actually a static link, or it is a
10541 -Bsymbolic link and the symbol is defined
10542 locally, or the symbol was forced to be local
10543 because of a version file. */
10544 ;
10545 else
10546 {
039b3fef 10547 indx = h->elf.dynindx;
d881513a
AM		 10548 unresolved_reloc = FALSE;
10549 }
039b3fef 10550 ent = h->elf.got.glist;
d881513a 10551 }
411e1bfb 10552 else
5bd4f169 10553 {
d881513a
AM		 10554 if (local_got_ents == NULL)
10555 abort ();
10556 ent = local_got_ents[r_symndx];
5bd4f169 10557 }
d881513a
AM		 10558
10559 for (; ent != NULL; ent = ent->next)
4cc603a5 10560 if (ent->addend == orig_addend
e717da7e 10561 && ent->owner == input_bfd
d881513a
AM		 10562 && ent->tls_type == tls_type)
10563 break;
10564 if (ent == NULL)
10565 abort ();
10566 offp = &ent->got.offset;
5bd4f169 10567 }
411e1bfb 10568
e717da7e
AM		 10569 got = ppc64_elf_tdata (input_bfd)->got;
10570 if (got == NULL)
10571 abort ();
10572
411e1bfb
AM		 10573 /* The offset must always be a multiple of 8. We use the
10574 least significant bit to record whether we have already
10575 processed this entry. */
d881513a 10576 off = *offp;
411e1bfb
AM		 10577 if ((off & 1) != 0)
10578 off &= ~1;
5bd4f169
AM		 10579 else
10580 {
411e1bfb
AM		 10581 /* Generate relocs for the dynamic linker, except in
10582 the case of TLSLD where we'll use one entry per
10583 module. */
e717da7e
AM		 10584 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10585
d881513a 10586 *offp = off | 1;
4e795f50
AM		 10587 if ((info->shared || indx != 0)
10588 && (h == NULL
039b3fef
AM		 10589 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10590 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10591 {
e717da7e
AM		 10592 outrel.r_offset = (got->output_section->vma
10593 + got->output_offset
411e1bfb 10594 + off);
4cc603a5 10595 outrel.r_addend = addend;
d881513a 10596 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10597 {
411e1bfb 10598 outrel.r_addend = 0;
e515b051 10599 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10600 if (tls_type == (TLS_TLS | TLS_GD))
10601 {
e717da7e
AM		 10602 loc = relgot->contents;
10603 loc += (relgot->reloc_count++
d881513a
AM		 10604 * sizeof (Elf64_External_Rela));
10605 bfd_elf64_swap_reloca_out (output_bfd,
10606 &outrel, loc);
e515b051 10607 outrel.r_offset += 8;
4cc603a5 10608 outrel.r_addend = addend;
d881513a
AM		 10609 outrel.r_info
10610 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10611 }
411e1bfb 10612 }
951fd09b 10613 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10614 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10615 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10616 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10617 else if (indx == 0)
81407a69
AM		 10618 {
10619 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10620
10621 /* Write the .got section contents for the sake
10622 of prelink. */
e717da7e 10623 loc = got->contents + off;
23fbd6fa
JJ		 10624 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10625 loc);
81407a69 10626 }
411e1bfb
AM		 10627 else
10628 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10629
10630 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10631 {
10632 outrel.r_addend += relocation;
10633 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10634 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10635 }
e717da7e
AM		 10636 loc = relgot->contents;
10637 loc += (relgot->reloc_count++
411e1bfb
AM		 10638 * sizeof (Elf64_External_Rela));
10639 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10640 }
10641
ad8e1ba5 10642 /* Init the .got section contents here if we're not
81407a69 10643 emitting a reloc. */
d881513a 10644 else
411e1bfb 10645 {
4cc603a5 10646 relocation += addend;
7b609f53
AM		 10647 if (tls_type == (TLS_TLS | TLS_LD))
10648 relocation = 1;
10649 else if (tls_type != 0)
411e1bfb 10650 {
e1918d23 10651 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10652 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10653 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10654
7b609f53
AM		 10655 if (tls_type == (TLS_TLS | TLS_GD))
10656 {
10657 bfd_put_64 (output_bfd, relocation,
e717da7e 10658 got->contents + off + 8);
7b609f53
AM		 10659 relocation = 1;
10660 }
411e1bfb 10661 }
7b609f53 10662
411e1bfb 10663 bfd_put_64 (output_bfd, relocation,
e717da7e 10664 got->contents + off);
5bd4f169
AM		 10665 }
10666 }
10667
65f38f15
AM		 10668 if (off >= (bfd_vma) -2)
10669 abort ();
10670
e717da7e 10671 relocation = got->output_offset + off;
65f38f15 10672
5bd4f169 10673 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10674 addend = -TOC_BASE_OFF;
5bd4f169 10675 }
65f38f15
AM		 10676 break;
10677
10678 case R_PPC64_PLT16_HA:
10679 case R_PPC64_PLT16_HI:
10680 case R_PPC64_PLT16_LO:
10681 case R_PPC64_PLT32:
10682 case R_PPC64_PLT64:
10683 /* Relocation is to the entry for this symbol in the
10684 procedure linkage table. */
10685
10686 /* Resolve a PLT reloc against a local symbol directly,
10687 without using the procedure linkage table. */
10688 if (h == NULL)
10689 break;
10690
411e1bfb
AM		 10691 /* It's possible that we didn't make a PLT entry for this
10692 symbol. This happens when statically linking PIC code,
10693 or when using -Bsymbolic. Go find a match if there is a
10694 PLT entry. */
4ce794b7 10695 if (htab->plt != NULL)
65f38f15 10696 {
411e1bfb 10697 struct plt_entry *ent;
039b3fef 10698 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 10699 if (ent->addend == orig_addend
411e1bfb
AM		 10700 && ent->plt.offset != (bfd_vma) -1)
10701 {
4ce794b7
AM		 10702 relocation = (htab->plt->output_section->vma
10703 + htab->plt->output_offset
411e1bfb
AM		 10704 + ent->plt.offset);
10705 unresolved_reloc = FALSE;
10706 }
65f38f15 10707 }
65f38f15 10708 break;
5bd4f169 10709
0b13192e
AM		 10710 case R_PPC64_TOC:
10711 /* Relocation value is TOC base. */
10712 relocation = TOCstart;
10713 if (r_symndx == 0)
10714 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10715 else if (unresolved_reloc)
10716 ;
10717 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10718 relocation += htab->stub_group[sec->id].toc_off;
10719 else
10720 unresolved_reloc = TRUE;
10721 goto dodyn2;
10722
5bd4f169
AM		 10723 /* TOC16 relocs. We want the offset relative to the TOC base,
10724 which is the address of the start of the TOC plus 0x8000.
10725 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10726 in this order. */
65f38f15
AM		 10727 case R_PPC64_TOC16:
10728 case R_PPC64_TOC16_LO:
10729 case R_PPC64_TOC16_HI:
10730 case R_PPC64_TOC16_DS:
10731 case R_PPC64_TOC16_LO_DS:
10732 case R_PPC64_TOC16_HA:
ad8e1ba5 10733 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10734 break;
10735
10736 /* Relocate against the beginning of the section. */
65f38f15
AM		 10737 case R_PPC64_SECTOFF:
10738 case R_PPC64_SECTOFF_LO:
10739 case R_PPC64_SECTOFF_HI:
10740 case R_PPC64_SECTOFF_DS:
10741 case R_PPC64_SECTOFF_LO_DS:
10742 case R_PPC64_SECTOFF_HA:
4ce794b7 10743 if (sec != NULL)
65f38f15 10744 addend -= sec->output_section->vma;
5bd4f169
AM		 10745 break;
10746
721956f4
AM		 10747 case R_PPC64_REL14:
10748 case R_PPC64_REL14_BRNTAKEN:
10749 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10750 case R_PPC64_REL24:
10751 break;
10752
411e1bfb
AM		 10753 case R_PPC64_TPREL16:
10754 case R_PPC64_TPREL16_LO:
10755 case R_PPC64_TPREL16_HI:
10756 case R_PPC64_TPREL16_HA:
10757 case R_PPC64_TPREL16_DS:
10758 case R_PPC64_TPREL16_LO_DS:
10759 case R_PPC64_TPREL16_HIGHER:
10760 case R_PPC64_TPREL16_HIGHERA:
10761 case R_PPC64_TPREL16_HIGHEST:
10762 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10763 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10764 if (info->shared)
10765 /* The TPREL16 relocs shouldn't really be used in shared
10766 libs as they will result in DT_TEXTREL being set, but
10767 support them anyway. */
10768 goto dodyn;
10769 break;
10770
10771 case R_PPC64_DTPREL16:
10772 case R_PPC64_DTPREL16_LO:
10773 case R_PPC64_DTPREL16_HI:
10774 case R_PPC64_DTPREL16_HA:
10775 case R_PPC64_DTPREL16_DS:
10776 case R_PPC64_DTPREL16_LO_DS:
10777 case R_PPC64_DTPREL16_HIGHER:
10778 case R_PPC64_DTPREL16_HIGHERA:
10779 case R_PPC64_DTPREL16_HIGHEST:
10780 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10781 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10782 break;
10783
e515b051
AM		 10784 case R_PPC64_DTPMOD64:
10785 relocation = 1;
10786 addend = 0;
10787 goto dodyn;
10788
411e1bfb 10789 case R_PPC64_TPREL64:
e1918d23 10790 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10791 goto dodyn;
10792
10793 case R_PPC64_DTPREL64:
e1918d23 10794 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10795 /* Fall thru */
10796
65f38f15
AM		 10797 /* Relocations that may need to be propagated if this is a
10798 dynamic object. */
04c9666a 10799 case R_PPC64_REL30:
65f38f15
AM		 10800 case R_PPC64_REL32:
10801 case R_PPC64_REL64:
10802 case R_PPC64_ADDR14:
10803 case R_PPC64_ADDR14_BRNTAKEN:
10804 case R_PPC64_ADDR14_BRTAKEN:
10805 case R_PPC64_ADDR16:
10806 case R_PPC64_ADDR16_DS:
10807 case R_PPC64_ADDR16_HA:
10808 case R_PPC64_ADDR16_HI:
10809 case R_PPC64_ADDR16_HIGHER:
10810 case R_PPC64_ADDR16_HIGHERA:
10811 case R_PPC64_ADDR16_HIGHEST:
10812 case R_PPC64_ADDR16_HIGHESTA:
10813 case R_PPC64_ADDR16_LO:
10814 case R_PPC64_ADDR16_LO_DS:
10815 case R_PPC64_ADDR24:
65f38f15
AM		 10816 case R_PPC64_ADDR32:
10817 case R_PPC64_ADDR64:
10818 case R_PPC64_UADDR16:
10819 case R_PPC64_UADDR32:
10820 case R_PPC64_UADDR64:
ec338859
AM		 10821 /* r_symndx will be zero only for relocs against symbols
10822 from removed linkonce sections, or sections discarded by
10823 a linker script. */
411e1bfb 10824 dodyn:
5d1634d7 10825 if (r_symndx == 0)
b1e24c02
DJ		 10826 {
10827 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10828 contents + rel->r_offset);
10829 break;
10830 }
5d1634d7
AM		 10831 /* Fall thru. */
10832
0b13192e 10833 dodyn2:
5d1634d7 10834 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10835 break;
10836
41bd81ab
AM		 10837 if (NO_OPD_RELOCS && is_opd)
10838 break;
10839
65f38f15 10840 if ((info->shared
4e795f50 10841 && (h == NULL
039b3fef
AM		 10842 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10843 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10844 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10845 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10846 || (ELIMINATE_COPY_RELOCS
10847 && !info->shared
65f38f15 10848 && h != NULL
039b3fef 10849 && h->elf.dynindx != -1
f5385ebf
AM		 10850 && !h->elf.non_got_ref
10851 && h->elf.def_dynamic
10852 && !h->elf.def_regular))
65f38f15
AM		 10853 {
10854 Elf_Internal_Rela outrel;
b34976b6 10855 bfd_boolean skip, relocate;
65f38f15 10856 asection *sreloc;
947216bf 10857 bfd_byte *loc;
1cf1f670 10858 bfd_vma out_off;
65f38f15
AM		 10859
10860 /* When generating a dynamic object, these relocations
10861 are copied into the output file to be resolved at run
10862 time. */
10863
b34976b6
AM		 10864 skip = FALSE;
10865 relocate = FALSE;
65f38f15 10866
1cf1f670
AM		 10867 out_off = _bfd_elf_section_offset (output_bfd, info,
10868 input_section, rel->r_offset);
10869 if (out_off == (bfd_vma) -1)
b34976b6 10870 skip = TRUE;
1cf1f670 10871 else if (out_off == (bfd_vma) -2)
b34976b6 10872 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10873 out_off += (input_section->output_section->vma
10874 + input_section->output_offset);
10875 outrel.r_offset = out_off;
411e1bfb 10876 outrel.r_addend = rel->r_addend;
65f38f15 10877
1cf1f670
AM		 10878 /* Optimize unaligned reloc use. */
10879 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10880 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10881 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10882 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10883 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10884 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10885 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10886 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10887 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10888
65f38f15 10889 if (skip)
0bb2d96a 10890 memset (&outrel, 0, sizeof outrel);
039b3fef 10891 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10892 && !is_opd
10893 && r_type != R_PPC64_TOC)
039b3fef 10894 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10895 else
10896 {
41bd81ab
AM		 10897 /* This symbol is local, or marked to become local,
10898 or this is an opd section reloc which must point
10899 at a local function. */
65f38f15 10900 outrel.r_addend += relocation;
e86ce104 10901 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10902 {
3fad3c7c 10903 if (is_opd && h != NULL)
afbe61cf
AM		 10904 {
10905 /* Lie about opd entries. This case occurs
10906 when building shared libraries and we
10907 reference a function in another shared
3fad3c7c
AM		 10908 lib. The same thing happens for a weak
10909 definition in an application that's
10910 overridden by a strong definition in a
10911 shared lib. (I believe this is a generic
10912 bug in binutils handling of weak syms.)
10913 In these cases we won't use the opd
1e2f5b6e 10914 entry in this lib. */
b34976b6 10915 unresolved_reloc = FALSE;
afbe61cf 10916 }
65f38f15 10917 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10918
10919 /* We need to relocate .opd contents for ld.so.
10920 Prelink also wants simple and consistent rules
10921 for relocs. This make all RELATIVE relocs have
10922 *r_offset equal to r_addend. */
10923 relocate = TRUE;
65f38f15
AM		 10924 }
10925 else
10926 {
10927 long indx = 0;
10928
41bd81ab 10929 if (bfd_is_abs_section (sec))
65f38f15
AM		 10930 ;
10931 else if (sec == NULL || sec->owner == NULL)
10932 {
10933 bfd_set_error (bfd_error_bad_value);
b34976b6 10934 return FALSE;
65f38f15
AM		 10935 }
10936 else
10937 {
10938 asection *osec;
10939
10940 osec = sec->output_section;
10941 indx = elf_section_data (osec)->dynindx;
10942
74541ad4
AM		 10943 if (indx == 0)
10944 {
10945 if ((osec->flags & SEC_READONLY) == 0
10946 && htab->elf.data_index_section != NULL)
10947 osec = htab->elf.data_index_section;
10948 else
10949 osec = htab->elf.text_index_section;
10950 indx = elf_section_data (osec)->dynindx;
10951 }
10952 BFD_ASSERT (indx != 0);
10953
65f38f15
AM		 10954 /* We are turning this relocation into one
10955 against a section symbol, so subtract out
10956 the output section's address but not the
10957 offset of the input section in the output
10958 section. */
10959 outrel.r_addend -= osec->vma;
10960 }
10961
10962 outrel.r_info = ELF64_R_INFO (indx, r_type);
10963 }
10964 }
10965
10966 sreloc = elf_section_data (input_section)->sreloc;
10967 if (sreloc == NULL)
10968 abort ();
10969
dfbb6ac9
AM		 10970 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
10971 >= sreloc->size)
10972 abort ();
947216bf
AM		 10973 loc = sreloc->contents;
10974 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10975 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10976
10977 /* If this reloc is against an external symbol, it will
10978 be computed at runtime, so there's no need to do
81407a69
AM		 10979 anything now. However, for the sake of prelink ensure
10980 that the section contents are a known value. */
65f38f15 10981 if (! relocate)
81407a69
AM		 10982 {
10983 unresolved_reloc = FALSE;
10984 /* The value chosen here is quite arbitrary as ld.so
10985 ignores section contents except for the special
10986 case of .opd where the contents might be accessed
10987 before relocation. Choose zero, as that won't
10988 cause reloc overflow. */
10989 relocation = 0;
10990 addend = 0;
10991 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10992 to improve backward compatibility with older
10993 versions of ld. */
10994 if (r_type == R_PPC64_ADDR64)
10995 addend = outrel.r_addend;
10996 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10997 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10998 addend = (input_section->output_section->vma
10999 + input_section->output_offset
11000 + rel->r_offset);
81407a69 11001 }
65f38f15 11002 }
5bd4f169
AM		 11003 break;
11004
65f38f15
AM		 11005 case R_PPC64_COPY:
11006 case R_PPC64_GLOB_DAT:
11007 case R_PPC64_JMP_SLOT:
11008 case R_PPC64_RELATIVE:
11009 /* We shouldn't ever see these dynamic relocs in relocatable
11010 files. */
ae9a127f 11011 /* Fall through. */
65f38f15
AM		 11012
11013 case R_PPC64_PLTGOT16:
11014 case R_PPC64_PLTGOT16_DS:
11015 case R_PPC64_PLTGOT16_HA:
11016 case R_PPC64_PLTGOT16_HI:
11017 case R_PPC64_PLTGOT16_LO:
11018 case R_PPC64_PLTGOT16_LO_DS:
11019 case R_PPC64_PLTREL32:
11020 case R_PPC64_PLTREL64:
11021 /* These ones haven't been implemented yet. */
11022
11023 (*_bfd_error_handler)
d003868e
AM		 11024 (_("%B: relocation %s is not supported for symbol %s."),
11025 input_bfd,
4ce794b7 11026 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 11027
11028 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11029 ret = FALSE;
5bd4f169 11030 continue;
65f38f15 11031 }
5bd4f169 11032
65f38f15
AM		 11033 /* Do any further special processing. */
11034 switch (r_type)
11035 {
11036 default:
11037 break;
11038
11039 case R_PPC64_ADDR16_HA:
11040 case R_PPC64_ADDR16_HIGHERA:
11041 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 11042 case R_PPC64_TOC16_HA:
11043 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 11044 case R_PPC64_TPREL16_HA:
11045 case R_PPC64_DTPREL16_HA:
411e1bfb
AM		 11046 case R_PPC64_TPREL16_HIGHER:
11047 case R_PPC64_TPREL16_HIGHERA:
11048 case R_PPC64_TPREL16_HIGHEST:
11049 case R_PPC64_TPREL16_HIGHESTA:
11050 case R_PPC64_DTPREL16_HIGHER:
11051 case R_PPC64_DTPREL16_HIGHERA:
11052 case R_PPC64_DTPREL16_HIGHEST:
11053 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 11054 /* It's just possible that this symbol is a weak symbol
11055 that's not actually defined anywhere. In that case,
11056 'sec' would be NULL, and we should leave the symbol
11057 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 11058 if (sec == NULL)
11059 break;
11060 /* Fall thru */
11061
11062 case R_PPC64_GOT16_HA:
11063 case R_PPC64_PLTGOT16_HA:
11064 case R_PPC64_PLT16_HA:
11065 case R_PPC64_GOT_TLSGD16_HA:
11066 case R_PPC64_GOT_TLSLD16_HA:
11067 case R_PPC64_GOT_TPREL16_HA:
11068 case R_PPC64_GOT_DTPREL16_HA:
11069 /* Add 0x10000 if sign bit in 0:15 is set.
11070 Bits 0:15 are not used. */
11071 addend += 0x8000;
65f38f15
AM		 11072 break;
11073
11074 case R_PPC64_ADDR16_DS:
11075 case R_PPC64_ADDR16_LO_DS:
11076 case R_PPC64_GOT16_DS:
11077 case R_PPC64_GOT16_LO_DS:
11078 case R_PPC64_PLT16_LO_DS:
11079 case R_PPC64_SECTOFF_DS:
11080 case R_PPC64_SECTOFF_LO_DS:
11081 case R_PPC64_TOC16_DS:
11082 case R_PPC64_TOC16_LO_DS:
11083 case R_PPC64_PLTGOT16_DS:
11084 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 11085 case R_PPC64_GOT_TPREL16_DS:
11086 case R_PPC64_GOT_TPREL16_LO_DS:
11087 case R_PPC64_GOT_DTPREL16_DS:
11088 case R_PPC64_GOT_DTPREL16_LO_DS:
11089 case R_PPC64_TPREL16_DS:
11090 case R_PPC64_TPREL16_LO_DS:
11091 case R_PPC64_DTPREL16_DS:
11092 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 11093 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11094 mask = 3;
11095 /* If this reloc is against an lq insn, then the value must be
11096 a multiple of 16. This is somewhat of a hack, but the
11097 "correct" way to do this by defining _DQ forms of all the
11098 _DS relocs bloats all reloc switches in this file. It
11099 doesn't seem to make much sense to use any of these relocs
11100 in data, so testing the insn should be safe. */
494dac0c 11101 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 11102 mask = 15;
11103 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 11104 {
11105 (*_bfd_error_handler)
d003868e
AM		 11106 (_("%B: error: relocation %s not a multiple of %d"),
11107 input_bfd,
4ce794b7 11108 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11109 mask + 1);
65f38f15 11110 bfd_set_error (bfd_error_bad_value);
b34976b6 11111 ret = FALSE;
65f38f15
AM		 11112 continue;
11113 }
11114 break;
5bd4f169
AM		 11115 }
11116
239e1f3a
AM		 11117 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11118 because such sections are not SEC_ALLOC and thus ld.so will
11119 not process them. */
65f38f15 11120 if (unresolved_reloc
239e1f3a 11121 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11122 && h->elf.def_dynamic))
9c07fe7c
AM		 11123 {
11124 (*_bfd_error_handler)
d003868e
AM		 11125 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11126 input_bfd,
11127 input_section,
9c07fe7c 11128 (long) rel->r_offset,
7b609f53 11129 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11130 h->elf.root.root.string);
b34976b6 11131 ret = FALSE;
9c07fe7c 11132 }
5bd4f169 11133
65f38f15 11134 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 11135 input_bfd,
11136 input_section,
11137 contents,
411e1bfb 11138 rel->r_offset,
5bd4f169
AM		 11139 relocation,
11140 addend);
11141
ef60b7ff 11142 if (r != bfd_reloc_ok)
5bd4f169 11143 {
cd27b276
AM		 11144 if (sym_name == NULL)
11145 sym_name = "(null)";
11146 if (r == bfd_reloc_overflow)
5bd4f169 11147 {
cd27b276
AM		 11148 if (warned)
11149 continue;
11150 if (h != NULL
039b3fef 11151 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11152 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 11153 {
11154 /* Assume this is a call protected by other code that
11155 detects the symbol is undefined. If this is the case,
11156 we can safely ignore the overflow. If not, the
11157 program is hosed anyway, and a little warning isn't
11158 going to help. */
11159
11160 continue;
11161 }
11162
ef60b7ff 11163 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 11164 (info, (h ? &h->elf.root : NULL), sym_name,
11165 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11166 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11167 return FALSE;
ef60b7ff
AM		 11168 }
11169 else
11170 {
11171 (*_bfd_error_handler)
d003868e
AM		 11172 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11173 input_bfd,
11174 input_section,
7b609f53 11175 (long) rel->r_offset,
4ce794b7 11176 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 11177 sym_name,
11178 (int) r);
b34976b6 11179 ret = FALSE;
ef60b7ff 11180 }
5bd4f169 11181 }
5bd4f169
AM		 11182 }
11183
645ea6a9
AM		 11184 /* If we're emitting relocations, then shortly after this function
11185 returns, reloc offsets and addends for this section will be
11186 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 11187 file rather than the input. Save a copy of the relocs for
11188 opd_entry_value. */
4cc603a5 11189 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 11190 {
11191 bfd_size_type amt;
11192 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11193 rel = bfd_alloc (input_bfd, amt);
11194 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11195 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11196 if (rel == NULL)
11197 return FALSE;
11198 memcpy (rel, relocs, amt);
11199 }
5bd4f169
AM		 11200 return ret;
11201}
11202
754021d0
AM		 11203/* Adjust the value of any local symbols in opd sections. */
11204
11205static bfd_boolean
11206ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11207 const char *name ATTRIBUTE_UNUSED,
11208 Elf_Internal_Sym *elfsym,
11209 asection *input_sec,
11210 struct elf_link_hash_entry *h)
11211{
4025353c 11212 long *opd_adjust, adjust;
754021d0
AM		 11213 bfd_vma value;
11214
4025353c
AM		 11215 if (h != NULL)
11216 return TRUE;
11217
11218 opd_adjust = get_opd_info (input_sec);
11219 if (opd_adjust == NULL)
754021d0
AM		 11220 return TRUE;
11221
11222 value = elfsym->st_value - input_sec->output_offset;
11223 if (!info->relocatable)
11224 value -= input_sec->output_section->vma;
11225
3f764659 11226 adjust = opd_adjust[value / 8];
4025353c
AM		 11227 if (adjust == -1)
11228 elfsym->st_value = 0;
11229 else
11230 elfsym->st_value += adjust;
754021d0
AM		 11231 return TRUE;
11232}
11233
5bd4f169
AM		 11234/* Finish up dynamic symbol handling. We set the contents of various
11235 dynamic sections here. */
11236
b34976b6 11237static bfd_boolean
4ce794b7
AM		 11238ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11239 struct bfd_link_info *info,
11240 struct elf_link_hash_entry *h,
11241 Elf_Internal_Sym *sym)
5bd4f169 11242{
65f38f15 11243 struct ppc_link_hash_table *htab;
8387904d
AM		 11244 struct plt_entry *ent;
11245 Elf_Internal_Rela rela;
11246 bfd_byte *loc;
5bd4f169 11247
65f38f15 11248 htab = ppc_hash_table (info);
5bd4f169 11249
8387904d
AM		 11250 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11251 if (ent->plt.offset != (bfd_vma) -1)
11252 {
11253 /* This symbol has an entry in the procedure linkage
11254 table. Set it up. */
11255
11256 if (htab->plt == NULL
11257 || htab->relplt == NULL
11258 || htab->glink == NULL)
11259 abort ();
11260
11261 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11262 fill in the PLT entry. */
11263 rela.r_offset = (htab->plt->output_section->vma
11264 + htab->plt->output_offset
11265 + ent->plt.offset);
11266 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11267 rela.r_addend = ent->addend;
11268
11269 loc = htab->relplt->contents;
11270 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11271 * sizeof (Elf64_External_Rela));
11272 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11273 }
5bd4f169 11274
f5385ebf 11275 if (h->needs_copy)
5bd4f169 11276 {
5bd4f169 11277 Elf_Internal_Rela rela;
947216bf 11278 bfd_byte *loc;
5bd4f169 11279
65f38f15 11280 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11281
65f38f15
AM		 11282 if (h->dynindx == -1
11283 || (h->root.type != bfd_link_hash_defined
11284 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11285 || htab->relbss == NULL)
65f38f15 11286 abort ();
5bd4f169
AM		 11287
11288 rela.r_offset = (h->root.u.def.value
11289 + h->root.u.def.section->output_section->vma
11290 + h->root.u.def.section->output_offset);
11291 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11292 rela.r_addend = 0;
4ce794b7
AM		 11293 loc = htab->relbss->contents;
11294 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11295 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 11296 }
11297
5bd4f169
AM		 11298 /* Mark some specially defined symbols as absolute. */
11299 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11300 sym->st_shndx = SHN_ABS;
11301
b34976b6 11302 return TRUE;
5bd4f169
AM		 11303}
11304
65f38f15
AM		 11305/* Used to decide how to sort relocs in an optimal manner for the
11306 dynamic linker, before writing them out. */
11307
11308static enum elf_reloc_type_class
4ce794b7 11309ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11310{
04c9666a 11311 enum elf_ppc64_reloc_type r_type;
a33d1f77 11312
4ce794b7 11313 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11314 switch (r_type)
65f38f15
AM		 11315 {
11316 case R_PPC64_RELATIVE:
11317 return reloc_class_relative;
11318 case R_PPC64_JMP_SLOT:
11319 return reloc_class_plt;
11320 case R_PPC64_COPY:
11321 return reloc_class_copy;
11322 default:
11323 return reloc_class_normal;
11324 }
11325}
11326
5bd4f169
AM		 11327/* Finish up the dynamic sections. */
11328
b34976b6 11329static bfd_boolean
4ce794b7
AM		 11330ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11331 struct bfd_link_info *info)
5bd4f169 11332{
65f38f15
AM		 11333 struct ppc_link_hash_table *htab;
11334 bfd *dynobj;
5bd4f169 11335 asection *sdyn;
5bd4f169 11336
65f38f15
AM		 11337 htab = ppc_hash_table (info);
11338 dynobj = htab->elf.dynobj;
5bd4f169
AM		 11339 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11340
65f38f15 11341 if (htab->elf.dynamic_sections_created)
5bd4f169 11342 {
5bd4f169
AM		 11343 Elf64_External_Dyn *dyncon, *dynconend;
11344
4ce794b7 11345 if (sdyn == NULL || htab->got == NULL)
65f38f15 11346 abort ();
5bd4f169
AM		 11347
11348 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11349 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11350 for (; dyncon < dynconend; dyncon++)
11351 {
11352 Elf_Internal_Dyn dyn;
19397422 11353 asection *s;
5bd4f169
AM		 11354
11355 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11356
11357 switch (dyn.d_tag)
11358 {
65f38f15
AM		 11359 default:
11360 continue;
5bd4f169 11361
5d1634d7 11362 case DT_PPC64_GLINK:
4ce794b7 11363 s = htab->glink;
6348e046 11364 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11365 /* We stupidly defined DT_PPC64_GLINK to be the start
11366 of glink rather than the first entry point, which is
11367 what ld.so needs, and now have a bigger stub to
11368 support automatic multiple TOCs. */
11369 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11370 break;
11371
19397422
AM		 11372 case DT_PPC64_OPD:
11373 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11374 if (s == NULL)
11375 continue;
11376 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11377 break;
11378
11379 case DT_PPC64_OPDSZ:
11380 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11381 if (s == NULL)
11382 continue;
eea6121a 11383 dyn.d_un.d_val = s->size;
19397422
AM		 11384 break;
11385
65f38f15 11386 case DT_PLTGOT:
4ce794b7 11387 s = htab->plt;
6348e046 11388 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11389 break;
11390
11391 case DT_JMPREL:
4ce794b7 11392 s = htab->relplt;
6348e046 11393 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11394 break;
5bd4f169 11395
65f38f15 11396 case DT_PLTRELSZ:
eea6121a 11397 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11398 break;
11399
11400 case DT_RELASZ:
11401 /* Don't count procedure linkage table relocs in the
11402 overall reloc count. */
4ce794b7 11403 s = htab->relplt;
6348e046
AM		 11404 if (s == NULL)
11405 continue;
eea6121a 11406 dyn.d_un.d_val -= s->size;
6348e046
AM		 11407 break;
11408
11409 case DT_RELA:
11410 /* We may not be using the standard ELF linker script.
11411 If .rela.plt is the first .rela section, we adjust
11412 DT_RELA to not include it. */
4ce794b7 11413 s = htab->relplt;
6348e046
AM		 11414 if (s == NULL)
11415 continue;
11416 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11417 continue;
eea6121a 11418 dyn.d_un.d_ptr += s->size;
65f38f15 11419 break;
5bd4f169 11420 }
5bd4f169 11421
65f38f15 11422 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11423 }
5bd4f169
AM		 11424 }
11425
eea6121a 11426 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11427 {
11428 /* Fill in the first entry in the global offset table.
11429 We use it to hold the link-time TOCbase. */
11430 bfd_put_64 (output_bfd,
60ee0d4a 11431 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11432 htab->got->contents);
5d1634d7
AM		 11433
11434 /* Set .got entry size. */
4ce794b7 11435 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11436 }
11437
eea6121a 11438 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11439 {
11440 /* Set .plt entry size. */
4ce794b7 11441 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11442 = PLT_ENTRY_SIZE;
11443 }
11444
e717da7e 11445 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11446 since we didn't add them to DYNOBJ. We know dynobj is the first
11447 bfd. */
e717da7e
AM		 11448 while ((dynobj = dynobj->link_next) != NULL)
11449 {
11450 asection *s;
7b53ace3 11451
ee75fd95 11452 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11453 continue;
11454
e717da7e
AM		 11455 s = ppc64_elf_tdata (dynobj)->got;
11456 if (s != NULL
eea6121a 11457 && s->size != 0
e717da7e
AM		 11458 && s->output_section != bfd_abs_section_ptr
11459 && !bfd_set_section_contents (output_bfd, s->output_section,
11460 s->contents, s->output_offset,
eea6121a 11461 s->size))
e717da7e
AM		 11462 return FALSE;
11463 s = ppc64_elf_tdata (dynobj)->relgot;
11464 if (s != NULL
eea6121a 11465 && s->size != 0
e717da7e
AM		 11466 && s->output_section != bfd_abs_section_ptr
11467 && !bfd_set_section_contents (output_bfd, s->output_section,
11468 s->contents, s->output_offset,
eea6121a 11469 s->size))
e717da7e
AM		 11470 return FALSE;
11471 }
f6c52c13 11472
b34976b6 11473 return TRUE;
5bd4f169
AM		 11474}
11475
5bd4f169 11476#include "elf64-target.h"
GDB Binutils - Deliverables
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