* breakpoint.c (print_one_breakpoint_location): Revert Enb field
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
74f0fb50 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
cd123cb7 24
4ce794b7
AM
25/* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
5bd4f169 31#include "bfd.h"
5bd4f169
AM
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
04c9666a 35#include "elf/ppc64.h"
5d1634d7 36#include "elf64-ppc.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
56static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 58
ad8e1ba5
AM
59#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60#define TARGET_LITTLE_NAME "elf64-powerpcle"
61#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
64#define ELF_MACHINE_CODE EM_PPC64
65#define ELF_MAXPAGESIZE 0x10000
24718e3b 66#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM
67#define elf_info_to_howto ppc64_elf_info_to_howto
68
69#define elf_backend_want_got_sym 0
70#define elf_backend_want_plt_sym 0
71#define elf_backend_plt_alignment 3
72#define elf_backend_plt_not_loaded 1
ad8e1ba5 73#define elf_backend_got_header_size 8
ad8e1ba5
AM
74#define elf_backend_can_gc_sections 1
75#define elf_backend_can_refcount 1
76#define elf_backend_rela_normal 1
6bfdb61b 77#define elf_backend_default_execstack 0
ad8e1ba5 78
e717da7e 79#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 80#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
157090f7 81#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM
82#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 86#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM
87
88#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM
89#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 91#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM
92#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 94#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d 95#define elf_backend_check_directives ppc64_elf_check_directives
97fed1c9 96#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 97#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 98#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 99#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 100#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM
101#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104#define elf_backend_hide_symbol ppc64_elf_hide_symbol
105#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 107#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 108#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM
109#define elf_backend_relocate_section ppc64_elf_relocate_section
110#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 113#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 114#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 115
5bd4f169
AM
116/* The name of the dynamic interpreter. This is put in the .interp
117 section. */
118#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
119
120/* The size in bytes of an entry in the procedure linkage table. */
121#define PLT_ENTRY_SIZE 24
122
123/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 124#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM
125
126/* TOC base pointers offset from start of TOC. */
411e1bfb
AM
127#define TOC_BASE_OFF 0x8000
128
129/* Offset of tp and dtp pointers from start of TLS block. */
130#define TP_OFFSET 0x7000
131#define DTP_OFFSET 0x8000
5bd4f169 132
ad8e1ba5
AM
133/* .plt call stub instructions. The normal stub is like this, but
134 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 135 insert an addi to adjust r12. */
ad8e1ba5 136#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM
137#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
138#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
139#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 140#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 141#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
AM
142 /* ld %r11,xxx+16@l(%r12) */
143#define BCTR 0x4e800420 /* bctr */
144
5d1634d7 145
ee4bf8d2 146#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 147#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
ad8e1ba5
AM
148#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
149#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
150
ac2df442
AM
151#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
152#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
153
ad8e1ba5
AM
154#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
155
ee4bf8d2 156/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 157#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM
158 /* 0: */
159 /* .quad plt0-1f */
160 /* __glink: */
161#define MFLR_R12 0x7d8802a6 /* mflr %12 */
162#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
163 /* 1: */
164#define MFLR_R11 0x7d6802a6 /* mflr %11 */
165#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
166#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
167#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
168 /* ld %11,0(%12) */
169 /* ld %2,8(%12) */
170 /* mtctr %11 */
171 /* ld %11,16(%12) */
172 /* bctr */
5d1634d7
AM
173
174/* Pad with this. */
175#define NOP 0x60000000
176
721956f4
AM
177/* Some other nops. */
178#define CROR_151515 0x4def7b82
179#define CROR_313131 0x4ffffb82
180
cedb70c5 181/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM
182#define LI_R0_0 0x38000000 /* li %r0,0 */
183#define B_DOT 0x48000000 /* b . */
184
185/* After that, we need two instructions to load the index, followed by
186 a branch. */
187#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 188#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 189
deb0e272
AM
190/* Instructions used by the save and restore reg functions. */
191#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
192#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
193#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
194#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM
195#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
196#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM
197#define LI_R12_0 0x39800000 /* li %r12,0 */
198#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
199#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
200#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM
201#define BLR 0x4e800020 /* blr */
202
41bd81ab
AM
203/* Since .opd is an array of descriptors and each entry will end up
204 with identical R_PPC64_RELATIVE relocs, there is really no need to
205 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 206 relocate .opd without reloc entries. */
41bd81ab
AM
207#ifndef NO_OPD_RELOCS
208#define NO_OPD_RELOCS 0
209#endif
5bd4f169 210\f
f5e87a1d 211#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 212
5bd4f169 213/* Relocation HOWTO's. */
04c9666a 214static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM
215
216static reloc_howto_type ppc64_elf_howto_raw[] = {
217 /* This reloc does nothing. */
218 HOWTO (R_PPC64_NONE, /* type */
219 0, /* rightshift */
411e1bfb
AM
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 32, /* bitsize */
b34976b6 222 FALSE, /* pc_relative */
5bd4f169 223 0, /* bitpos */
f5e87a1d 224 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC64_NONE", /* name */
b34976b6 227 FALSE, /* partial_inplace */
d006db6c 228 0, /* src_mask */
5bd4f169 229 0, /* dst_mask */
b34976b6 230 FALSE), /* pcrel_offset */
5bd4f169
AM
231
232 /* A standard 32 bit relocation. */
233 HOWTO (R_PPC64_ADDR32, /* type */
234 0, /* rightshift */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
236 32, /* bitsize */
b34976b6 237 FALSE, /* pc_relative */
5bd4f169
AM
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC64_ADDR32", /* name */
b34976b6 242 FALSE, /* partial_inplace */
5bd4f169
AM
243 0, /* src_mask */
244 0xffffffff, /* dst_mask */
b34976b6 245 FALSE), /* pcrel_offset */
5bd4f169
AM
246
247 /* An absolute 26 bit branch; the lower two bits must be zero.
248 FIXME: we don't check that, we just clear them. */
249 HOWTO (R_PPC64_ADDR24, /* type */
250 0, /* rightshift */
251 2, /* size (0 = byte, 1 = short, 2 = long) */
252 26, /* bitsize */
b34976b6 253 FALSE, /* pc_relative */
5bd4f169
AM
254 0, /* bitpos */
255 complain_overflow_bitfield, /* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC64_ADDR24", /* name */
b34976b6 258 FALSE, /* partial_inplace */
d006db6c 259 0, /* src_mask */
f5e87a1d 260 0x03fffffc, /* dst_mask */
b34976b6 261 FALSE), /* pcrel_offset */
5bd4f169
AM
262
263 /* A standard 16 bit relocation. */
264 HOWTO (R_PPC64_ADDR16, /* type */
265 0, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
b34976b6 268 FALSE, /* pc_relative */
5bd4f169
AM
269 0, /* bitpos */
270 complain_overflow_bitfield, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC64_ADDR16", /* name */
b34976b6 273 FALSE, /* partial_inplace */
5bd4f169
AM
274 0, /* src_mask */
275 0xffff, /* dst_mask */
b34976b6 276 FALSE), /* pcrel_offset */
5bd4f169
AM
277
278 /* A 16 bit relocation without overflow. */
279 HOWTO (R_PPC64_ADDR16_LO, /* type */
280 0, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
5bd4f169
AM
284 0, /* bitpos */
285 complain_overflow_dont,/* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC64_ADDR16_LO", /* name */
b34976b6 288 FALSE, /* partial_inplace */
5bd4f169
AM
289 0, /* src_mask */
290 0xffff, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
5bd4f169
AM
292
293 /* Bits 16-31 of an address. */
294 HOWTO (R_PPC64_ADDR16_HI, /* type */
295 16, /* rightshift */
296 1, /* size (0 = byte, 1 = short, 2 = long) */
297 16, /* bitsize */
b34976b6 298 FALSE, /* pc_relative */
5bd4f169
AM
299 0, /* bitpos */
300 complain_overflow_dont, /* complain_on_overflow */
301 bfd_elf_generic_reloc, /* special_function */
302 "R_PPC64_ADDR16_HI", /* name */
b34976b6 303 FALSE, /* partial_inplace */
5bd4f169
AM
304 0, /* src_mask */
305 0xffff, /* dst_mask */
b34976b6 306 FALSE), /* pcrel_offset */
5bd4f169
AM
307
308 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
309 bits, treated as a signed number, is negative. */
310 HOWTO (R_PPC64_ADDR16_HA, /* type */
311 16, /* rightshift */
312 1, /* size (0 = byte, 1 = short, 2 = long) */
313 16, /* bitsize */
b34976b6 314 FALSE, /* pc_relative */
5bd4f169
AM
315 0, /* bitpos */
316 complain_overflow_dont, /* complain_on_overflow */
805fc799 317 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 318 "R_PPC64_ADDR16_HA", /* name */
b34976b6 319 FALSE, /* partial_inplace */
5bd4f169
AM
320 0, /* src_mask */
321 0xffff, /* dst_mask */
b34976b6 322 FALSE), /* pcrel_offset */
5bd4f169
AM
323
324 /* An absolute 16 bit branch; the lower two bits must be zero.
325 FIXME: we don't check that, we just clear them. */
326 HOWTO (R_PPC64_ADDR14, /* type */
327 0, /* rightshift */
328 2, /* size (0 = byte, 1 = short, 2 = long) */
329 16, /* bitsize */
b34976b6 330 FALSE, /* pc_relative */
5bd4f169
AM
331 0, /* bitpos */
332 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 333 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 334 "R_PPC64_ADDR14", /* name */
b34976b6 335 FALSE, /* partial_inplace */
d006db6c 336 0, /* src_mask */
f5e87a1d 337 0x0000fffc, /* dst_mask */
b34976b6 338 FALSE), /* pcrel_offset */
5bd4f169
AM
339
340 /* An absolute 16 bit branch, for which bit 10 should be set to
341 indicate that the branch is expected to be taken. The lower two
342 bits must be zero. */
343 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
344 0, /* rightshift */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
346 16, /* bitsize */
b34976b6 347 FALSE, /* pc_relative */
5bd4f169
AM
348 0, /* bitpos */
349 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 350 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 351 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 352 FALSE, /* partial_inplace */
d006db6c 353 0, /* src_mask */
f5e87a1d 354 0x0000fffc, /* dst_mask */
b34976b6 355 FALSE), /* pcrel_offset */
5bd4f169
AM
356
357 /* An absolute 16 bit branch, for which bit 10 should be set to
358 indicate that the branch is not expected to be taken. The lower
359 two bits must be zero. */
360 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 FALSE, /* pc_relative */
5bd4f169
AM
365 0, /* bitpos */
366 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 367 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 368 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 369 FALSE, /* partial_inplace */
d006db6c 370 0, /* src_mask */
f5e87a1d 371 0x0000fffc, /* dst_mask */
b34976b6 372 FALSE), /* pcrel_offset */
5bd4f169
AM
373
374 /* A relative 26 bit branch; the lower two bits must be zero. */
375 HOWTO (R_PPC64_REL24, /* type */
376 0, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 26, /* bitsize */
b34976b6 379 TRUE, /* pc_relative */
5bd4f169
AM
380 0, /* bitpos */
381 complain_overflow_signed, /* complain_on_overflow */
2441e016 382 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 383 "R_PPC64_REL24", /* name */
b34976b6 384 FALSE, /* partial_inplace */
d006db6c 385 0, /* src_mask */
f5e87a1d 386 0x03fffffc, /* dst_mask */
b34976b6 387 TRUE), /* pcrel_offset */
5bd4f169
AM
388
389 /* A relative 16 bit branch; the lower two bits must be zero. */
390 HOWTO (R_PPC64_REL14, /* type */
391 0, /* rightshift */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
393 16, /* bitsize */
b34976b6 394 TRUE, /* pc_relative */
5bd4f169
AM
395 0, /* bitpos */
396 complain_overflow_signed, /* complain_on_overflow */
2441e016 397 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 398 "R_PPC64_REL14", /* name */
b34976b6 399 FALSE, /* partial_inplace */
d006db6c 400 0, /* src_mask */
f5e87a1d 401 0x0000fffc, /* dst_mask */
b34976b6 402 TRUE), /* pcrel_offset */
5bd4f169
AM
403
404 /* A relative 16 bit branch. Bit 10 should be set to indicate that
405 the branch is expected to be taken. The lower two bits must be
406 zero. */
407 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
408 0, /* rightshift */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
410 16, /* bitsize */
b34976b6 411 TRUE, /* pc_relative */
5bd4f169
AM
412 0, /* bitpos */
413 complain_overflow_signed, /* complain_on_overflow */
805fc799 414 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 415 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 416 FALSE, /* partial_inplace */
d006db6c 417 0, /* src_mask */
f5e87a1d 418 0x0000fffc, /* dst_mask */
b34976b6 419 TRUE), /* pcrel_offset */
5bd4f169
AM
420
421 /* A relative 16 bit branch. Bit 10 should be set to indicate that
422 the branch is not expected to be taken. The lower two bits must
423 be zero. */
424 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
425 0, /* rightshift */
426 2, /* size (0 = byte, 1 = short, 2 = long) */
427 16, /* bitsize */
b34976b6 428 TRUE, /* pc_relative */
5bd4f169
AM
429 0, /* bitpos */
430 complain_overflow_signed, /* complain_on_overflow */
805fc799 431 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 432 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 433 FALSE, /* partial_inplace */
d006db6c 434 0, /* src_mask */
f5e87a1d 435 0x0000fffc, /* dst_mask */
b34976b6 436 TRUE), /* pcrel_offset */
5bd4f169
AM
437
438 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
439 symbol. */
440 HOWTO (R_PPC64_GOT16, /* type */
441 0, /* rightshift */
442 1, /* size (0 = byte, 1 = short, 2 = long) */
443 16, /* bitsize */
b34976b6 444 FALSE, /* pc_relative */
5bd4f169
AM
445 0, /* bitpos */
446 complain_overflow_signed, /* complain_on_overflow */
805fc799 447 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 448 "R_PPC64_GOT16", /* name */
b34976b6 449 FALSE, /* partial_inplace */
5bd4f169
AM
450 0, /* src_mask */
451 0xffff, /* dst_mask */
b34976b6 452 FALSE), /* pcrel_offset */
5bd4f169
AM
453
454 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
455 the symbol. */
456 HOWTO (R_PPC64_GOT16_LO, /* type */
457 0, /* rightshift */
458 1, /* size (0 = byte, 1 = short, 2 = long) */
459 16, /* bitsize */
b34976b6 460 FALSE, /* pc_relative */
5bd4f169
AM
461 0, /* bitpos */
462 complain_overflow_dont, /* complain_on_overflow */
805fc799 463 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 464 "R_PPC64_GOT16_LO", /* name */
b34976b6 465 FALSE, /* partial_inplace */
5bd4f169
AM
466 0, /* src_mask */
467 0xffff, /* dst_mask */
b34976b6 468 FALSE), /* pcrel_offset */
5bd4f169
AM
469
470 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
471 the symbol. */
472 HOWTO (R_PPC64_GOT16_HI, /* type */
473 16, /* rightshift */
474 1, /* size (0 = byte, 1 = short, 2 = long) */
475 16, /* bitsize */
b34976b6 476 FALSE, /* pc_relative */
5bd4f169
AM
477 0, /* bitpos */
478 complain_overflow_dont,/* complain_on_overflow */
805fc799 479 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 480 "R_PPC64_GOT16_HI", /* name */
b34976b6 481 FALSE, /* partial_inplace */
5bd4f169
AM
482 0, /* src_mask */
483 0xffff, /* dst_mask */
b34976b6 484 FALSE), /* pcrel_offset */
5bd4f169
AM
485
486 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
487 the symbol. */
488 HOWTO (R_PPC64_GOT16_HA, /* type */
489 16, /* rightshift */
490 1, /* size (0 = byte, 1 = short, 2 = long) */
491 16, /* bitsize */
b34976b6 492 FALSE, /* pc_relative */
5bd4f169
AM
493 0, /* bitpos */
494 complain_overflow_dont,/* complain_on_overflow */
805fc799 495 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 496 "R_PPC64_GOT16_HA", /* name */
b34976b6 497 FALSE, /* partial_inplace */
5bd4f169
AM
498 0, /* src_mask */
499 0xffff, /* dst_mask */
b34976b6 500 FALSE), /* pcrel_offset */
5bd4f169
AM
501
502 /* This is used only by the dynamic linker. The symbol should exist
503 both in the object being run and in some shared library. The
504 dynamic linker copies the data addressed by the symbol from the
505 shared library into the object, because the object being
506 run has to have the data at some particular address. */
507 HOWTO (R_PPC64_COPY, /* type */
508 0, /* rightshift */
f5e87a1d
AM
509 0, /* this one is variable size */
510 0, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
5bd4f169 512 0, /* bitpos */
f5e87a1d
AM
513 complain_overflow_dont, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 515 "R_PPC64_COPY", /* name */
b34976b6 516 FALSE, /* partial_inplace */
5bd4f169
AM
517 0, /* src_mask */
518 0, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
5bd4f169
AM
520
521 /* Like R_PPC64_ADDR64, but used when setting global offset table
522 entries. */
523 HOWTO (R_PPC64_GLOB_DAT, /* type */
524 0, /* rightshift */
525 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
526 64, /* bitsize */
b34976b6 527 FALSE, /* pc_relative */
5bd4f169
AM
528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
805fc799 530 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 531 "R_PPC64_GLOB_DAT", /* name */
b34976b6 532 FALSE, /* partial_inplace */
5bd4f169 533 0, /* src_mask */
f5e87a1d 534 ONES (64), /* dst_mask */
b34976b6 535 FALSE), /* pcrel_offset */
5bd4f169
AM
536
537 /* Created by the link editor. Marks a procedure linkage table
538 entry for a symbol. */
539 HOWTO (R_PPC64_JMP_SLOT, /* type */
540 0, /* rightshift */
541 0, /* size (0 = byte, 1 = short, 2 = long) */
542 0, /* bitsize */
b34976b6 543 FALSE, /* pc_relative */
5bd4f169
AM
544 0, /* bitpos */
545 complain_overflow_dont, /* complain_on_overflow */
805fc799 546 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 547 "R_PPC64_JMP_SLOT", /* name */
b34976b6 548 FALSE, /* partial_inplace */
5bd4f169
AM
549 0, /* src_mask */
550 0, /* dst_mask */
b34976b6 551 FALSE), /* pcrel_offset */
5bd4f169
AM
552
553 /* Used only by the dynamic linker. When the object is run, this
554 doubleword64 is set to the load address of the object, plus the
555 addend. */
556 HOWTO (R_PPC64_RELATIVE, /* type */
557 0, /* rightshift */
558 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
559 64, /* bitsize */
b34976b6 560 FALSE, /* pc_relative */
5bd4f169
AM
561 0, /* bitpos */
562 complain_overflow_dont, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC64_RELATIVE", /* name */
b34976b6 565 FALSE, /* partial_inplace */
5bd4f169 566 0, /* src_mask */
f5e87a1d 567 ONES (64), /* dst_mask */
b34976b6 568 FALSE), /* pcrel_offset */
5bd4f169
AM
569
570 /* Like R_PPC64_ADDR32, but may be unaligned. */
571 HOWTO (R_PPC64_UADDR32, /* type */
572 0, /* rightshift */
573 2, /* size (0 = byte, 1 = short, 2 = long) */
574 32, /* bitsize */
b34976b6 575 FALSE, /* pc_relative */
5bd4f169
AM
576 0, /* bitpos */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC64_UADDR32", /* name */
b34976b6 580 FALSE, /* partial_inplace */
5bd4f169
AM
581 0, /* src_mask */
582 0xffffffff, /* dst_mask */
b34976b6 583 FALSE), /* pcrel_offset */
5bd4f169
AM
584
585 /* Like R_PPC64_ADDR16, but may be unaligned. */
586 HOWTO (R_PPC64_UADDR16, /* type */
587 0, /* rightshift */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
589 16, /* bitsize */
b34976b6 590 FALSE, /* pc_relative */
5bd4f169
AM
591 0, /* bitpos */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC64_UADDR16", /* name */
b34976b6 595 FALSE, /* partial_inplace */
5bd4f169
AM
596 0, /* src_mask */
597 0xffff, /* dst_mask */
b34976b6 598 FALSE), /* pcrel_offset */
5bd4f169
AM
599
600 /* 32-bit PC relative. */
601 HOWTO (R_PPC64_REL32, /* type */
602 0, /* rightshift */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
604 32, /* bitsize */
b34976b6 605 TRUE, /* pc_relative */
5bd4f169 606 0, /* bitpos */
cedb70c5 607 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM
608 complain_overflow_signed, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC64_REL32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
5bd4f169
AM
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
b34976b6 614 TRUE), /* pcrel_offset */
5bd4f169 615
10ed1bba 616 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
617 HOWTO (R_PPC64_PLT32, /* type */
618 0, /* rightshift */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
620 32, /* bitsize */
b34976b6 621 FALSE, /* pc_relative */
5bd4f169
AM
622 0, /* bitpos */
623 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 624 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 625 "R_PPC64_PLT32", /* name */
b34976b6 626 FALSE, /* partial_inplace */
5bd4f169 627 0, /* src_mask */
f5e87a1d 628 0xffffffff, /* dst_mask */
b34976b6 629 FALSE), /* pcrel_offset */
5bd4f169
AM
630
631 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
632 FIXME: R_PPC64_PLTREL32 not supported. */
633 HOWTO (R_PPC64_PLTREL32, /* type */
634 0, /* rightshift */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
636 32, /* bitsize */
b34976b6 637 TRUE, /* pc_relative */
5bd4f169
AM
638 0, /* bitpos */
639 complain_overflow_signed, /* complain_on_overflow */
640 bfd_elf_generic_reloc, /* special_function */
641 "R_PPC64_PLTREL32", /* name */
b34976b6 642 FALSE, /* partial_inplace */
5bd4f169 643 0, /* src_mask */
f5e87a1d 644 0xffffffff, /* dst_mask */
b34976b6 645 TRUE), /* pcrel_offset */
5bd4f169
AM
646
647 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
648 the symbol. */
649 HOWTO (R_PPC64_PLT16_LO, /* type */
650 0, /* rightshift */
651 1, /* size (0 = byte, 1 = short, 2 = long) */
652 16, /* bitsize */
b34976b6 653 FALSE, /* pc_relative */
5bd4f169
AM
654 0, /* bitpos */
655 complain_overflow_dont, /* complain_on_overflow */
805fc799 656 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 657 "R_PPC64_PLT16_LO", /* name */
b34976b6 658 FALSE, /* partial_inplace */
5bd4f169
AM
659 0, /* src_mask */
660 0xffff, /* dst_mask */
b34976b6 661 FALSE), /* pcrel_offset */
5bd4f169
AM
662
663 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
664 the symbol. */
665 HOWTO (R_PPC64_PLT16_HI, /* type */
666 16, /* rightshift */
667 1, /* size (0 = byte, 1 = short, 2 = long) */
668 16, /* bitsize */
b34976b6 669 FALSE, /* pc_relative */
5bd4f169
AM
670 0, /* bitpos */
671 complain_overflow_dont, /* complain_on_overflow */
805fc799 672 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 673 "R_PPC64_PLT16_HI", /* name */
b34976b6 674 FALSE, /* partial_inplace */
5bd4f169
AM
675 0, /* src_mask */
676 0xffff, /* dst_mask */
b34976b6 677 FALSE), /* pcrel_offset */
5bd4f169
AM
678
679 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
680 the symbol. */
681 HOWTO (R_PPC64_PLT16_HA, /* type */
682 16, /* rightshift */
683 1, /* size (0 = byte, 1 = short, 2 = long) */
684 16, /* bitsize */
b34976b6 685 FALSE, /* pc_relative */
5bd4f169
AM
686 0, /* bitpos */
687 complain_overflow_dont, /* complain_on_overflow */
805fc799 688 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 689 "R_PPC64_PLT16_HA", /* name */
b34976b6 690 FALSE, /* partial_inplace */
5bd4f169
AM
691 0, /* src_mask */
692 0xffff, /* dst_mask */
b34976b6 693 FALSE), /* pcrel_offset */
5bd4f169 694
c061c2d8 695 /* 16-bit section relative relocation. */
5bd4f169
AM
696 HOWTO (R_PPC64_SECTOFF, /* type */
697 0, /* rightshift */
c061c2d8
AM
698 1, /* size (0 = byte, 1 = short, 2 = long) */
699 16, /* bitsize */
b34976b6 700 FALSE, /* pc_relative */
5bd4f169
AM
701 0, /* bitpos */
702 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 703 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 704 "R_PPC64_SECTOFF", /* name */
b34976b6 705 FALSE, /* partial_inplace */
5bd4f169 706 0, /* src_mask */
c061c2d8 707 0xffff, /* dst_mask */
b34976b6 708 FALSE), /* pcrel_offset */
5bd4f169 709
c061c2d8 710 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM
711 HOWTO (R_PPC64_SECTOFF_LO, /* type */
712 0, /* rightshift */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
714 16, /* bitsize */
b34976b6 715 FALSE, /* pc_relative */
5bd4f169
AM
716 0, /* bitpos */
717 complain_overflow_dont, /* complain_on_overflow */
805fc799 718 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 719 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 720 FALSE, /* partial_inplace */
5bd4f169
AM
721 0, /* src_mask */
722 0xffff, /* dst_mask */
b34976b6 723 FALSE), /* pcrel_offset */
5bd4f169
AM
724
725 /* 16-bit upper half section relative relocation. */
726 HOWTO (R_PPC64_SECTOFF_HI, /* type */
727 16, /* rightshift */
728 1, /* size (0 = byte, 1 = short, 2 = long) */
729 16, /* bitsize */
b34976b6 730 FALSE, /* pc_relative */
5bd4f169
AM
731 0, /* bitpos */
732 complain_overflow_dont, /* complain_on_overflow */
805fc799 733 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 734 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 735 FALSE, /* partial_inplace */
5bd4f169
AM
736 0, /* src_mask */
737 0xffff, /* dst_mask */
b34976b6 738 FALSE), /* pcrel_offset */
5bd4f169
AM
739
740 /* 16-bit upper half adjusted section relative relocation. */
741 HOWTO (R_PPC64_SECTOFF_HA, /* type */
742 16, /* rightshift */
743 1, /* size (0 = byte, 1 = short, 2 = long) */
744 16, /* bitsize */
b34976b6 745 FALSE, /* pc_relative */
5bd4f169
AM
746 0, /* bitpos */
747 complain_overflow_dont, /* complain_on_overflow */
805fc799 748 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 749 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 750 FALSE, /* partial_inplace */
5bd4f169
AM
751 0, /* src_mask */
752 0xffff, /* dst_mask */
b34976b6 753 FALSE), /* pcrel_offset */
5bd4f169 754
04c9666a
AM
755 /* Like R_PPC64_REL24 without touching the two least significant bits. */
756 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM
757 2, /* rightshift */
758 2, /* size (0 = byte, 1 = short, 2 = long) */
759 30, /* bitsize */
b34976b6 760 TRUE, /* pc_relative */
5bd4f169
AM
761 0, /* bitpos */
762 complain_overflow_dont, /* complain_on_overflow */
763 bfd_elf_generic_reloc, /* special_function */
04c9666a 764 "R_PPC64_REL30", /* name */
b34976b6 765 FALSE, /* partial_inplace */
d006db6c 766 0, /* src_mask */
5bd4f169 767 0xfffffffc, /* dst_mask */
b34976b6 768 TRUE), /* pcrel_offset */
5bd4f169
AM
769
770 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
771
772 /* A standard 64-bit relocation. */
773 HOWTO (R_PPC64_ADDR64, /* type */
774 0, /* rightshift */
775 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
776 64, /* bitsize */
b34976b6 777 FALSE, /* pc_relative */
5bd4f169
AM
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC64_ADDR64", /* name */
b34976b6 782 FALSE, /* partial_inplace */
5bd4f169 783 0, /* src_mask */
f5e87a1d 784 ONES (64), /* dst_mask */
b34976b6 785 FALSE), /* pcrel_offset */
5bd4f169
AM
786
787 /* The bits 32-47 of an address. */
788 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
789 32, /* rightshift */
790 1, /* size (0 = byte, 1 = short, 2 = long) */
791 16, /* bitsize */
b34976b6 792 FALSE, /* pc_relative */
5bd4f169
AM
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 797 FALSE, /* partial_inplace */
5bd4f169
AM
798 0, /* src_mask */
799 0xffff, /* dst_mask */
b34976b6 800 FALSE), /* pcrel_offset */
5bd4f169
AM
801
802 /* The bits 32-47 of an address, plus 1 if the contents of the low
803 16 bits, treated as a signed number, is negative. */
804 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
805 32, /* rightshift */
806 1, /* size (0 = byte, 1 = short, 2 = long) */
807 16, /* bitsize */
b34976b6 808 FALSE, /* pc_relative */
5bd4f169
AM
809 0, /* bitpos */
810 complain_overflow_dont, /* complain_on_overflow */
805fc799 811 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 812 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 813 FALSE, /* partial_inplace */
5bd4f169
AM
814 0, /* src_mask */
815 0xffff, /* dst_mask */
b34976b6 816 FALSE), /* pcrel_offset */
5bd4f169
AM
817
818 /* The bits 48-63 of an address. */
819 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
820 48, /* rightshift */
821 1, /* size (0 = byte, 1 = short, 2 = long) */
822 16, /* bitsize */
b34976b6 823 FALSE, /* pc_relative */
5bd4f169
AM
824 0, /* bitpos */
825 complain_overflow_dont, /* complain_on_overflow */
826 bfd_elf_generic_reloc, /* special_function */
827 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 828 FALSE, /* partial_inplace */
5bd4f169
AM
829 0, /* src_mask */
830 0xffff, /* dst_mask */
b34976b6 831 FALSE), /* pcrel_offset */
5bd4f169
AM
832
833 /* The bits 48-63 of an address, plus 1 if the contents of the low
834 16 bits, treated as a signed number, is negative. */
835 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
836 48, /* rightshift */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
838 16, /* bitsize */
b34976b6 839 FALSE, /* pc_relative */
5bd4f169
AM
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
805fc799 842 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 843 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 844 FALSE, /* partial_inplace */
5bd4f169
AM
845 0, /* src_mask */
846 0xffff, /* dst_mask */
b34976b6 847 FALSE), /* pcrel_offset */
5bd4f169
AM
848
849 /* Like ADDR64, but may be unaligned. */
850 HOWTO (R_PPC64_UADDR64, /* type */
851 0, /* rightshift */
852 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
853 64, /* bitsize */
b34976b6 854 FALSE, /* pc_relative */
5bd4f169
AM
855 0, /* bitpos */
856 complain_overflow_dont, /* complain_on_overflow */
857 bfd_elf_generic_reloc, /* special_function */
858 "R_PPC64_UADDR64", /* name */
b34976b6 859 FALSE, /* partial_inplace */
5bd4f169 860 0, /* src_mask */
f5e87a1d 861 ONES (64), /* dst_mask */
b34976b6 862 FALSE), /* pcrel_offset */
5bd4f169
AM
863
864 /* 64-bit relative relocation. */
865 HOWTO (R_PPC64_REL64, /* type */
866 0, /* rightshift */
867 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
868 64, /* bitsize */
b34976b6 869 TRUE, /* pc_relative */
5bd4f169
AM
870 0, /* bitpos */
871 complain_overflow_dont, /* complain_on_overflow */
872 bfd_elf_generic_reloc, /* special_function */
873 "R_PPC64_REL64", /* name */
b34976b6 874 FALSE, /* partial_inplace */
5bd4f169 875 0, /* src_mask */
f5e87a1d 876 ONES (64), /* dst_mask */
b34976b6 877 TRUE), /* pcrel_offset */
5bd4f169 878
cedb70c5 879 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
880 HOWTO (R_PPC64_PLT64, /* type */
881 0, /* rightshift */
882 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
883 64, /* bitsize */
b34976b6 884 FALSE, /* pc_relative */
5bd4f169
AM
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
805fc799 887 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 888 "R_PPC64_PLT64", /* name */
b34976b6 889 FALSE, /* partial_inplace */
5bd4f169 890 0, /* src_mask */
f5e87a1d 891 ONES (64), /* dst_mask */
b34976b6 892 FALSE), /* pcrel_offset */
5bd4f169
AM
893
894 /* 64-bit PC relative relocation to the symbol's procedure linkage
895 table. */
896 /* FIXME: R_PPC64_PLTREL64 not supported. */
897 HOWTO (R_PPC64_PLTREL64, /* type */
898 0, /* rightshift */
899 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
900 64, /* bitsize */
b34976b6 901 TRUE, /* pc_relative */
5bd4f169
AM
902 0, /* bitpos */
903 complain_overflow_dont, /* complain_on_overflow */
805fc799 904 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 905 "R_PPC64_PLTREL64", /* name */
b34976b6 906 FALSE, /* partial_inplace */
5bd4f169 907 0, /* src_mask */
f5e87a1d 908 ONES (64), /* dst_mask */
b34976b6 909 TRUE), /* pcrel_offset */
5bd4f169
AM
910
911 /* 16 bit TOC-relative relocation. */
912
913 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
914 HOWTO (R_PPC64_TOC16, /* type */
915 0, /* rightshift */
916 1, /* size (0 = byte, 1 = short, 2 = long) */
917 16, /* bitsize */
b34976b6 918 FALSE, /* pc_relative */
5bd4f169
AM
919 0, /* bitpos */
920 complain_overflow_signed, /* complain_on_overflow */
805fc799 921 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 922 "R_PPC64_TOC16", /* name */
b34976b6 923 FALSE, /* partial_inplace */
5bd4f169
AM
924 0, /* src_mask */
925 0xffff, /* dst_mask */
b34976b6 926 FALSE), /* pcrel_offset */
5bd4f169
AM
927
928 /* 16 bit TOC-relative relocation without overflow. */
929
930 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
931 HOWTO (R_PPC64_TOC16_LO, /* type */
932 0, /* rightshift */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
934 16, /* bitsize */
b34976b6 935 FALSE, /* pc_relative */
5bd4f169
AM
936 0, /* bitpos */
937 complain_overflow_dont, /* complain_on_overflow */
805fc799 938 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 939 "R_PPC64_TOC16_LO", /* name */
b34976b6 940 FALSE, /* partial_inplace */
5bd4f169
AM
941 0, /* src_mask */
942 0xffff, /* dst_mask */
b34976b6 943 FALSE), /* pcrel_offset */
5bd4f169
AM
944
945 /* 16 bit TOC-relative relocation, high 16 bits. */
946
947 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
948 HOWTO (R_PPC64_TOC16_HI, /* type */
949 16, /* rightshift */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
951 16, /* bitsize */
b34976b6 952 FALSE, /* pc_relative */
5bd4f169
AM
953 0, /* bitpos */
954 complain_overflow_dont, /* complain_on_overflow */
805fc799 955 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 956 "R_PPC64_TOC16_HI", /* name */
b34976b6 957 FALSE, /* partial_inplace */
5bd4f169
AM
958 0, /* src_mask */
959 0xffff, /* dst_mask */
b34976b6 960 FALSE), /* pcrel_offset */
5bd4f169
AM
961
962 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
963 contents of the low 16 bits, treated as a signed number, is
964 negative. */
965
966 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
967 HOWTO (R_PPC64_TOC16_HA, /* type */
968 16, /* rightshift */
969 1, /* size (0 = byte, 1 = short, 2 = long) */
970 16, /* bitsize */
b34976b6 971 FALSE, /* pc_relative */
5bd4f169
AM
972 0, /* bitpos */
973 complain_overflow_dont, /* complain_on_overflow */
805fc799 974 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 975 "R_PPC64_TOC16_HA", /* name */
b34976b6 976 FALSE, /* partial_inplace */
5bd4f169
AM
977 0, /* src_mask */
978 0xffff, /* dst_mask */
b34976b6 979 FALSE), /* pcrel_offset */
5bd4f169
AM
980
981 /* 64-bit relocation; insert value of TOC base (.TOC.). */
982
983 /* R_PPC64_TOC 51 doubleword64 .TOC. */
984 HOWTO (R_PPC64_TOC, /* type */
985 0, /* rightshift */
986 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
987 64, /* bitsize */
b34976b6 988 FALSE, /* pc_relative */
5bd4f169
AM
989 0, /* bitpos */
990 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 991 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 992 "R_PPC64_TOC", /* name */
b34976b6 993 FALSE, /* partial_inplace */
5bd4f169 994 0, /* src_mask */
f5e87a1d 995 ONES (64), /* dst_mask */
b34976b6 996 FALSE), /* pcrel_offset */
5bd4f169
AM
997
998 /* Like R_PPC64_GOT16, but also informs the link editor that the
999 value to relocate may (!) refer to a PLT entry which the link
1000 editor (a) may replace with the symbol value. If the link editor
1001 is unable to fully resolve the symbol, it may (b) create a PLT
1002 entry and store the address to the new PLT entry in the GOT.
1003 This permits lazy resolution of function symbols at run time.
1004 The link editor may also skip all of this and just (c) emit a
1005 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1006 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1007 HOWTO (R_PPC64_PLTGOT16, /* type */
1008 0, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 16, /* bitsize */
b34976b6 1011 FALSE, /* pc_relative */
5bd4f169
AM
1012 0, /* bitpos */
1013 complain_overflow_signed, /* complain_on_overflow */
805fc799 1014 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM
1015 "R_PPC64_PLTGOT16", /* name */
1016 FALSE, /* partial_inplace */
1017 0, /* src_mask */
1018 0xffff, /* dst_mask */
1019 FALSE), /* pcrel_offset */
1020
1021 /* Like R_PPC64_PLTGOT16, but without overflow. */
1022 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1023 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1024 0, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 16, /* bitsize */
1027 FALSE, /* pc_relative */
1028 0, /* bitpos */
1029 complain_overflow_dont, /* complain_on_overflow */
1030 ppc64_elf_unhandled_reloc, /* special_function */
1031 "R_PPC64_PLTGOT16_LO", /* name */
1032 FALSE, /* partial_inplace */
1033 0, /* src_mask */
1034 0xffff, /* dst_mask */
1035 FALSE), /* pcrel_offset */
1036
1037 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1038 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1039 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1040 16, /* rightshift */
1041 1, /* size (0 = byte, 1 = short, 2 = long) */
1042 16, /* bitsize */
1043 FALSE, /* pc_relative */
1044 0, /* bitpos */
1045 complain_overflow_dont, /* complain_on_overflow */
1046 ppc64_elf_unhandled_reloc, /* special_function */
1047 "R_PPC64_PLTGOT16_HI", /* name */
1048 FALSE, /* partial_inplace */
1049 0, /* src_mask */
1050 0xffff, /* dst_mask */
1051 FALSE), /* pcrel_offset */
1052
1053 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1054 1 if the contents of the low 16 bits, treated as a signed number,
1055 is negative. */
1056 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1058 16, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 16, /* bitsize */
1061 FALSE, /* pc_relative */
1062 0, /* bitpos */
1063 complain_overflow_dont,/* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc, /* special_function */
1065 "R_PPC64_PLTGOT16_HA", /* name */
1066 FALSE, /* partial_inplace */
1067 0, /* src_mask */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1070
1071 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1072 HOWTO (R_PPC64_ADDR16_DS, /* type */
1073 0, /* rightshift */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 16, /* bitsize */
1076 FALSE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_bitfield, /* complain_on_overflow */
1079 bfd_elf_generic_reloc, /* special_function */
1080 "R_PPC64_ADDR16_DS", /* name */
1081 FALSE, /* partial_inplace */
1082 0, /* src_mask */
1083 0xfffc, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1085
1086 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1087 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1088 0, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 16, /* bitsize */
1091 FALSE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 bfd_elf_generic_reloc, /* special_function */
1095 "R_PPC64_ADDR16_LO_DS",/* name */
1096 FALSE, /* partial_inplace */
1097 0, /* src_mask */
1098 0xfffc, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1100
1101 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1102 HOWTO (R_PPC64_GOT16_DS, /* type */
1103 0, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 16, /* bitsize */
1106 FALSE, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_signed, /* complain_on_overflow */
1109 ppc64_elf_unhandled_reloc, /* special_function */
1110 "R_PPC64_GOT16_DS", /* name */
1111 FALSE, /* partial_inplace */
1112 0, /* src_mask */
1113 0xfffc, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1115
1116 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1117 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1118 0, /* rightshift */
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 16, /* bitsize */
1121 FALSE, /* pc_relative */
1122 0, /* bitpos */
1123 complain_overflow_dont, /* complain_on_overflow */
1124 ppc64_elf_unhandled_reloc, /* special_function */
1125 "R_PPC64_GOT16_LO_DS", /* name */
1126 FALSE, /* partial_inplace */
1127 0, /* src_mask */
1128 0xfffc, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1130
1131 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1132 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1133 0, /* rightshift */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 16, /* bitsize */
1136 FALSE, /* pc_relative */
1137 0, /* bitpos */
1138 complain_overflow_dont, /* complain_on_overflow */
1139 ppc64_elf_unhandled_reloc, /* special_function */
1140 "R_PPC64_PLT16_LO_DS", /* name */
1141 FALSE, /* partial_inplace */
1142 0, /* src_mask */
1143 0xfffc, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1145
1146 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1147 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1148 0, /* rightshift */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 16, /* bitsize */
1151 FALSE, /* pc_relative */
1152 0, /* bitpos */
1153 complain_overflow_bitfield, /* complain_on_overflow */
1154 ppc64_elf_sectoff_reloc, /* special_function */
1155 "R_PPC64_SECTOFF_DS", /* name */
1156 FALSE, /* partial_inplace */
1157 0, /* src_mask */
1158 0xfffc, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1160
1161 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1162 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1163 0, /* rightshift */
1164 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 16, /* bitsize */
1166 FALSE, /* pc_relative */
1167 0, /* bitpos */
1168 complain_overflow_dont, /* complain_on_overflow */
1169 ppc64_elf_sectoff_reloc, /* special_function */
1170 "R_PPC64_SECTOFF_LO_DS",/* name */
1171 FALSE, /* partial_inplace */
1172 0, /* src_mask */
1173 0xfffc, /* dst_mask */
1174 FALSE), /* pcrel_offset */
1175
1176 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1177 HOWTO (R_PPC64_TOC16_DS, /* type */
1178 0, /* rightshift */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 16, /* bitsize */
1181 FALSE, /* pc_relative */
1182 0, /* bitpos */
1183 complain_overflow_signed, /* complain_on_overflow */
1184 ppc64_elf_toc_reloc, /* special_function */
1185 "R_PPC64_TOC16_DS", /* name */
1186 FALSE, /* partial_inplace */
1187 0, /* src_mask */
1188 0xfffc, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1190
1191 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1192 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1193 0, /* rightshift */
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 16, /* bitsize */
1196 FALSE, /* pc_relative */
1197 0, /* bitpos */
1198 complain_overflow_dont, /* complain_on_overflow */
1199 ppc64_elf_toc_reloc, /* special_function */
1200 "R_PPC64_TOC16_LO_DS", /* name */
1201 FALSE, /* partial_inplace */
1202 0, /* src_mask */
1203 0xfffc, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1205
1206 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1207 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1208 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM
1209 0, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 16, /* bitsize */
1212 FALSE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 ppc64_elf_unhandled_reloc, /* special_function */
1216 "R_PPC64_PLTGOT16_DS", /* name */
1217 FALSE, /* partial_inplace */
1218 0, /* src_mask */
1219 0xfffc, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1221
1222 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1223 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1224 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1225 0, /* rightshift */
1226 1, /* size (0 = byte, 1 = short, 2 = long) */
1227 16, /* bitsize */
1228 FALSE, /* pc_relative */
1229 0, /* bitpos */
1230 complain_overflow_dont, /* complain_on_overflow */
1231 ppc64_elf_unhandled_reloc, /* special_function */
1232 "R_PPC64_PLTGOT16_LO_DS",/* name */
1233 FALSE, /* partial_inplace */
1234 0, /* src_mask */
1235 0xfffc, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1237
1238 /* Marker reloc for TLS. */
1239 HOWTO (R_PPC64_TLS,
1240 0, /* rightshift */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1242 32, /* bitsize */
1243 FALSE, /* pc_relative */
1244 0, /* bitpos */
1245 complain_overflow_dont, /* complain_on_overflow */
1246 bfd_elf_generic_reloc, /* special_function */
1247 "R_PPC64_TLS", /* name */
1248 FALSE, /* partial_inplace */
1249 0, /* src_mask */
1250 0, /* dst_mask */
1251 FALSE), /* pcrel_offset */
1252
1253 /* Computes the load module index of the load module that contains the
1254 definition of its TLS sym. */
1255 HOWTO (R_PPC64_DTPMOD64,
1256 0, /* rightshift */
1257 4, /* size (0 = byte, 1 = short, 2 = long) */
1258 64, /* bitsize */
1259 FALSE, /* pc_relative */
1260 0, /* bitpos */
1261 complain_overflow_dont, /* complain_on_overflow */
1262 ppc64_elf_unhandled_reloc, /* special_function */
1263 "R_PPC64_DTPMOD64", /* name */
1264 FALSE, /* partial_inplace */
1265 0, /* src_mask */
1266 ONES (64), /* dst_mask */
1267 FALSE), /* pcrel_offset */
1268
1269 /* Computes a dtv-relative displacement, the difference between the value
1270 of sym+add and the base address of the thread-local storage block that
1271 contains the definition of sym, minus 0x8000. */
1272 HOWTO (R_PPC64_DTPREL64,
1273 0, /* rightshift */
1274 4, /* size (0 = byte, 1 = short, 2 = long) */
1275 64, /* bitsize */
1276 FALSE, /* pc_relative */
1277 0, /* bitpos */
1278 complain_overflow_dont, /* complain_on_overflow */
1279 ppc64_elf_unhandled_reloc, /* special_function */
1280 "R_PPC64_DTPREL64", /* name */
1281 FALSE, /* partial_inplace */
1282 0, /* src_mask */
1283 ONES (64), /* dst_mask */
1284 FALSE), /* pcrel_offset */
1285
1286 /* A 16 bit dtprel reloc. */
1287 HOWTO (R_PPC64_DTPREL16,
1288 0, /* rightshift */
1289 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 16, /* bitsize */
1291 FALSE, /* pc_relative */
1292 0, /* bitpos */
1293 complain_overflow_signed, /* complain_on_overflow */
1294 ppc64_elf_unhandled_reloc, /* special_function */
1295 "R_PPC64_DTPREL16", /* name */
1296 FALSE, /* partial_inplace */
1297 0, /* src_mask */
1298 0xffff, /* dst_mask */
1299 FALSE), /* pcrel_offset */
1300
1301 /* Like DTPREL16, but no overflow. */
1302 HOWTO (R_PPC64_DTPREL16_LO,
1303 0, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1305 16, /* bitsize */
1306 FALSE, /* pc_relative */
1307 0, /* bitpos */
1308 complain_overflow_dont, /* complain_on_overflow */
1309 ppc64_elf_unhandled_reloc, /* special_function */
1310 "R_PPC64_DTPREL16_LO", /* name */
1311 FALSE, /* partial_inplace */
1312 0, /* src_mask */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1315
1316 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1317 HOWTO (R_PPC64_DTPREL16_HI,
1318 16, /* rightshift */
1319 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 16, /* bitsize */
1321 FALSE, /* pc_relative */
1322 0, /* bitpos */
1323 complain_overflow_dont, /* complain_on_overflow */
1324 ppc64_elf_unhandled_reloc, /* special_function */
1325 "R_PPC64_DTPREL16_HI", /* name */
1326 FALSE, /* partial_inplace */
1327 0, /* src_mask */
1328 0xffff, /* dst_mask */
1329 FALSE), /* pcrel_offset */
1330
1331 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1332 HOWTO (R_PPC64_DTPREL16_HA,
1333 16, /* rightshift */
1334 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 16, /* bitsize */
1336 FALSE, /* pc_relative */
1337 0, /* bitpos */
1338 complain_overflow_dont, /* complain_on_overflow */
1339 ppc64_elf_unhandled_reloc, /* special_function */
1340 "R_PPC64_DTPREL16_HA", /* name */
1341 FALSE, /* partial_inplace */
1342 0, /* src_mask */
1343 0xffff, /* dst_mask */
1344 FALSE), /* pcrel_offset */
1345
1346 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1347 HOWTO (R_PPC64_DTPREL16_HIGHER,
1348 32, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc, /* special_function */
1355 "R_PPC64_DTPREL16_HIGHER", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1362 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1363 32, /* rightshift */
1364 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 16, /* bitsize */
1366 FALSE, /* pc_relative */
1367 0, /* bitpos */
1368 complain_overflow_dont, /* complain_on_overflow */
1369 ppc64_elf_unhandled_reloc, /* special_function */
1370 "R_PPC64_DTPREL16_HIGHERA", /* name */
1371 FALSE, /* partial_inplace */
1372 0, /* src_mask */
1373 0xffff, /* dst_mask */
1374 FALSE), /* pcrel_offset */
1375
1376 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1377 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1378 48, /* rightshift */
1379 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 16, /* bitsize */
1381 FALSE, /* pc_relative */
1382 0, /* bitpos */
1383 complain_overflow_dont, /* complain_on_overflow */
1384 ppc64_elf_unhandled_reloc, /* special_function */
1385 "R_PPC64_DTPREL16_HIGHEST", /* name */
1386 FALSE, /* partial_inplace */
1387 0, /* src_mask */
1388 0xffff, /* dst_mask */
1389 FALSE), /* pcrel_offset */
1390
1391 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1392 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1393 48, /* rightshift */
1394 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 16, /* bitsize */
1396 FALSE, /* pc_relative */
1397 0, /* bitpos */
1398 complain_overflow_dont, /* complain_on_overflow */
1399 ppc64_elf_unhandled_reloc, /* special_function */
1400 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1401 FALSE, /* partial_inplace */
1402 0, /* src_mask */
1403 0xffff, /* dst_mask */
1404 FALSE), /* pcrel_offset */
1405
1406 /* Like DTPREL16, but for insns with a DS field. */
1407 HOWTO (R_PPC64_DTPREL16_DS,
1408 0, /* rightshift */
1409 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 16, /* bitsize */
1411 FALSE, /* pc_relative */
1412 0, /* bitpos */
1413 complain_overflow_signed, /* complain_on_overflow */
1414 ppc64_elf_unhandled_reloc, /* special_function */
1415 "R_PPC64_DTPREL16_DS", /* name */
1416 FALSE, /* partial_inplace */
1417 0, /* src_mask */
1418 0xfffc, /* dst_mask */
1419 FALSE), /* pcrel_offset */
1420
1421 /* Like DTPREL16_DS, but no overflow. */
1422 HOWTO (R_PPC64_DTPREL16_LO_DS,
1423 0, /* rightshift */
1424 1, /* size (0 = byte, 1 = short, 2 = long) */
1425 16, /* bitsize */
1426 FALSE, /* pc_relative */
1427 0, /* bitpos */
1428 complain_overflow_dont, /* complain_on_overflow */
1429 ppc64_elf_unhandled_reloc, /* special_function */
1430 "R_PPC64_DTPREL16_LO_DS", /* name */
1431 FALSE, /* partial_inplace */
1432 0, /* src_mask */
1433 0xfffc, /* dst_mask */
1434 FALSE), /* pcrel_offset */
1435
1436 /* Computes a tp-relative displacement, the difference between the value of
1437 sym+add and the value of the thread pointer (r13). */
1438 HOWTO (R_PPC64_TPREL64,
1439 0, /* rightshift */
1440 4, /* size (0 = byte, 1 = short, 2 = long) */
1441 64, /* bitsize */
1442 FALSE, /* pc_relative */
1443 0, /* bitpos */
1444 complain_overflow_dont, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc, /* special_function */
1446 "R_PPC64_TPREL64", /* name */
1447 FALSE, /* partial_inplace */
1448 0, /* src_mask */
1449 ONES (64), /* dst_mask */
1450 FALSE), /* pcrel_offset */
1451
1452 /* A 16 bit tprel reloc. */
1453 HOWTO (R_PPC64_TPREL16,
1454 0, /* rightshift */
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1456 16, /* bitsize */
1457 FALSE, /* pc_relative */
1458 0, /* bitpos */
1459 complain_overflow_signed, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc, /* special_function */
1461 "R_PPC64_TPREL16", /* name */
1462 FALSE, /* partial_inplace */
1463 0, /* src_mask */
1464 0xffff, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1466
1467 /* Like TPREL16, but no overflow. */
1468 HOWTO (R_PPC64_TPREL16_LO,
1469 0, /* rightshift */
1470 1, /* size (0 = byte, 1 = short, 2 = long) */
1471 16, /* bitsize */
1472 FALSE, /* pc_relative */
1473 0, /* bitpos */
1474 complain_overflow_dont, /* complain_on_overflow */
1475 ppc64_elf_unhandled_reloc, /* special_function */
1476 "R_PPC64_TPREL16_LO", /* name */
1477 FALSE, /* partial_inplace */
1478 0, /* src_mask */
1479 0xffff, /* dst_mask */
1480 FALSE), /* pcrel_offset */
1481
1482 /* Like TPREL16_LO, but next higher group of 16 bits. */
1483 HOWTO (R_PPC64_TPREL16_HI,
1484 16, /* rightshift */
1485 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 16, /* bitsize */
1487 FALSE, /* pc_relative */
1488 0, /* bitpos */
1489 complain_overflow_dont, /* complain_on_overflow */
1490 ppc64_elf_unhandled_reloc, /* special_function */
1491 "R_PPC64_TPREL16_HI", /* name */
1492 FALSE, /* partial_inplace */
1493 0, /* src_mask */
1494 0xffff, /* dst_mask */
1495 FALSE), /* pcrel_offset */
1496
1497 /* Like TPREL16_HI, but adjust for low 16 bits. */
1498 HOWTO (R_PPC64_TPREL16_HA,
1499 16, /* rightshift */
1500 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 16, /* bitsize */
1502 FALSE, /* pc_relative */
1503 0, /* bitpos */
1504 complain_overflow_dont, /* complain_on_overflow */
1505 ppc64_elf_unhandled_reloc, /* special_function */
1506 "R_PPC64_TPREL16_HA", /* name */
1507 FALSE, /* partial_inplace */
1508 0, /* src_mask */
1509 0xffff, /* dst_mask */
1510 FALSE), /* pcrel_offset */
1511
1512 /* Like TPREL16_HI, but next higher group of 16 bits. */
1513 HOWTO (R_PPC64_TPREL16_HIGHER,
1514 32, /* rightshift */
1515 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 16, /* bitsize */
1517 FALSE, /* pc_relative */
1518 0, /* bitpos */
1519 complain_overflow_dont, /* complain_on_overflow */
1520 ppc64_elf_unhandled_reloc, /* special_function */
1521 "R_PPC64_TPREL16_HIGHER", /* name */
1522 FALSE, /* partial_inplace */
1523 0, /* src_mask */
1524 0xffff, /* dst_mask */
1525 FALSE), /* pcrel_offset */
1526
1527 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1528 HOWTO (R_PPC64_TPREL16_HIGHERA,
1529 32, /* rightshift */
1530 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 16, /* bitsize */
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
1534 complain_overflow_dont, /* complain_on_overflow */
1535 ppc64_elf_unhandled_reloc, /* special_function */
1536 "R_PPC64_TPREL16_HIGHERA", /* name */
1537 FALSE, /* partial_inplace */
1538 0, /* src_mask */
1539 0xffff, /* dst_mask */
1540 FALSE), /* pcrel_offset */
1541
1542 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1543 HOWTO (R_PPC64_TPREL16_HIGHEST,
1544 48, /* rightshift */
1545 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 16, /* bitsize */
1547 FALSE, /* pc_relative */
1548 0, /* bitpos */
1549 complain_overflow_dont, /* complain_on_overflow */
1550 ppc64_elf_unhandled_reloc, /* special_function */
1551 "R_PPC64_TPREL16_HIGHEST", /* name */
1552 FALSE, /* partial_inplace */
1553 0, /* src_mask */
1554 0xffff, /* dst_mask */
1555 FALSE), /* pcrel_offset */
1556
1557 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1558 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1559 48, /* rightshift */
1560 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 16, /* bitsize */
1562 FALSE, /* pc_relative */
1563 0, /* bitpos */
1564 complain_overflow_dont, /* complain_on_overflow */
1565 ppc64_elf_unhandled_reloc, /* special_function */
1566 "R_PPC64_TPREL16_HIGHESTA", /* name */
1567 FALSE, /* partial_inplace */
1568 0, /* src_mask */
1569 0xffff, /* dst_mask */
1570 FALSE), /* pcrel_offset */
1571
1572 /* Like TPREL16, but for insns with a DS field. */
1573 HOWTO (R_PPC64_TPREL16_DS,
1574 0, /* rightshift */
1575 1, /* size (0 = byte, 1 = short, 2 = long) */
1576 16, /* bitsize */
1577 FALSE, /* pc_relative */
1578 0, /* bitpos */
1579 complain_overflow_signed, /* complain_on_overflow */
1580 ppc64_elf_unhandled_reloc, /* special_function */
1581 "R_PPC64_TPREL16_DS", /* name */
1582 FALSE, /* partial_inplace */
1583 0, /* src_mask */
1584 0xfffc, /* dst_mask */
1585 FALSE), /* pcrel_offset */
1586
1587 /* Like TPREL16_DS, but no overflow. */
1588 HOWTO (R_PPC64_TPREL16_LO_DS,
1589 0, /* rightshift */
1590 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 16, /* bitsize */
1592 FALSE, /* pc_relative */
1593 0, /* bitpos */
1594 complain_overflow_dont, /* complain_on_overflow */
1595 ppc64_elf_unhandled_reloc, /* special_function */
1596 "R_PPC64_TPREL16_LO_DS", /* name */
1597 FALSE, /* partial_inplace */
1598 0, /* src_mask */
1599 0xfffc, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1601
1602 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1603 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1604 to the first entry relative to the TOC base (r2). */
1605 HOWTO (R_PPC64_GOT_TLSGD16,
1606 0, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 16, /* bitsize */
1609 FALSE, /* pc_relative */
1610 0, /* bitpos */
1611 complain_overflow_signed, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc, /* special_function */
1613 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1614 FALSE, /* partial_inplace */
5bd4f169
AM
1615 0, /* src_mask */
1616 0xffff, /* dst_mask */
b34976b6 1617 FALSE), /* pcrel_offset */
5bd4f169 1618
411e1bfb
AM
1619 /* Like GOT_TLSGD16, but no overflow. */
1620 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM
1621 0, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 16, /* bitsize */
b34976b6 1624 FALSE, /* pc_relative */
5bd4f169
AM
1625 0, /* bitpos */
1626 complain_overflow_dont, /* complain_on_overflow */
805fc799 1627 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1628 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1629 FALSE, /* partial_inplace */
5bd4f169
AM
1630 0, /* src_mask */
1631 0xffff, /* dst_mask */
b34976b6 1632 FALSE), /* pcrel_offset */
5bd4f169 1633
411e1bfb
AM
1634 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM
1636 16, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 16, /* bitsize */
b34976b6 1639 FALSE, /* pc_relative */
5bd4f169
AM
1640 0, /* bitpos */
1641 complain_overflow_dont, /* complain_on_overflow */
805fc799 1642 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1643 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1644 FALSE, /* partial_inplace */
5bd4f169
AM
1645 0, /* src_mask */
1646 0xffff, /* dst_mask */
b34976b6 1647 FALSE), /* pcrel_offset */
5bd4f169 1648
411e1bfb
AM
1649 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM
1651 16, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 16, /* bitsize */
b34976b6 1654 FALSE, /* pc_relative */
5bd4f169 1655 0, /* bitpos */
411e1bfb 1656 complain_overflow_dont, /* complain_on_overflow */
805fc799 1657 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1658 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1659 FALSE, /* partial_inplace */
5bd4f169
AM
1660 0, /* src_mask */
1661 0xffff, /* dst_mask */
b34976b6 1662 FALSE), /* pcrel_offset */
5bd4f169 1663
411e1bfb
AM
1664 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1665 with values (sym+add)@dtpmod and zero, and computes the offset to the
1666 first entry relative to the TOC base (r2). */
1667 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM
1668 0, /* rightshift */
1669 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 16, /* bitsize */
b34976b6 1671 FALSE, /* pc_relative */
5bd4f169 1672 0, /* bitpos */
411e1bfb
AM
1673 complain_overflow_signed, /* complain_on_overflow */
1674 ppc64_elf_unhandled_reloc, /* special_function */
1675 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1676 FALSE, /* partial_inplace */
d006db6c 1677 0, /* src_mask */
411e1bfb 1678 0xffff, /* dst_mask */
b34976b6 1679 FALSE), /* pcrel_offset */
5bd4f169 1680
411e1bfb
AM
1681 /* Like GOT_TLSLD16, but no overflow. */
1682 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM
1683 0, /* rightshift */
1684 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 16, /* bitsize */
b34976b6 1686 FALSE, /* pc_relative */
5bd4f169 1687 0, /* bitpos */
411e1bfb
AM
1688 complain_overflow_dont, /* complain_on_overflow */
1689 ppc64_elf_unhandled_reloc, /* special_function */
1690 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1691 FALSE, /* partial_inplace */
d006db6c 1692 0, /* src_mask */
411e1bfb 1693 0xffff, /* dst_mask */
b34976b6 1694 FALSE), /* pcrel_offset */
5bd4f169 1695
411e1bfb
AM
1696 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1697 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1698 16, /* rightshift */
5bd4f169
AM
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 16, /* bitsize */
b34976b6 1701 FALSE, /* pc_relative */
5bd4f169 1702 0, /* bitpos */
411e1bfb 1703 complain_overflow_dont, /* complain_on_overflow */
805fc799 1704 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1705 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1706 FALSE, /* partial_inplace */
d006db6c 1707 0, /* src_mask */
411e1bfb 1708 0xffff, /* dst_mask */
b34976b6 1709 FALSE), /* pcrel_offset */
5bd4f169 1710
411e1bfb
AM
1711 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1712 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1713 16, /* rightshift */
5bd4f169
AM
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 16, /* bitsize */
b34976b6 1716 FALSE, /* pc_relative */
5bd4f169
AM
1717 0, /* bitpos */
1718 complain_overflow_dont, /* complain_on_overflow */
805fc799 1719 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1720 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1721 FALSE, /* partial_inplace */
d006db6c 1722 0, /* src_mask */
411e1bfb 1723 0xffff, /* dst_mask */
b34976b6 1724 FALSE), /* pcrel_offset */
5bd4f169 1725
411e1bfb
AM
1726 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1727 the offset to the entry relative to the TOC base (r2). */
1728 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM
1729 0, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 16, /* bitsize */
b34976b6 1732 FALSE, /* pc_relative */
5bd4f169 1733 0, /* bitpos */
411e1bfb 1734 complain_overflow_signed, /* complain_on_overflow */
805fc799 1735 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1736 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1737 FALSE, /* partial_inplace */
d006db6c 1738 0, /* src_mask */
5bd4f169 1739 0xfffc, /* dst_mask */
b34976b6 1740 FALSE), /* pcrel_offset */
5bd4f169 1741
411e1bfb
AM
1742 /* Like GOT_DTPREL16_DS, but no overflow. */
1743 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1744 0, /* rightshift */
c061c2d8
AM
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 16, /* bitsize */
b34976b6 1747 FALSE, /* pc_relative */
5bd4f169 1748 0, /* bitpos */
411e1bfb
AM
1749 complain_overflow_dont, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc, /* special_function */
1751 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1752 FALSE, /* partial_inplace */
d006db6c 1753 0, /* src_mask */
c061c2d8 1754 0xfffc, /* dst_mask */
b34976b6 1755 FALSE), /* pcrel_offset */
5bd4f169 1756
411e1bfb
AM
1757 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1758 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1759 16, /* rightshift */
5bd4f169
AM
1760 1, /* size (0 = byte, 1 = short, 2 = long) */
1761 16, /* bitsize */
b34976b6 1762 FALSE, /* pc_relative */
5bd4f169
AM
1763 0, /* bitpos */
1764 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1765 ppc64_elf_unhandled_reloc, /* special_function */
1766 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1767 FALSE, /* partial_inplace */
d006db6c 1768 0, /* src_mask */
411e1bfb 1769 0xffff, /* dst_mask */
b34976b6 1770 FALSE), /* pcrel_offset */
5bd4f169 1771
411e1bfb
AM
1772 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1773 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1774 16, /* rightshift */
1775 1, /* size (0 = byte, 1 = short, 2 = long) */
1776 16, /* bitsize */
1777 FALSE, /* pc_relative */
1778 0, /* bitpos */
1779 complain_overflow_dont, /* complain_on_overflow */
1780 ppc64_elf_unhandled_reloc, /* special_function */
1781 "R_PPC64_GOT_DTPREL16_HA", /* name */
1782 FALSE, /* partial_inplace */
1783 0, /* src_mask */
1784 0xffff, /* dst_mask */
1785 FALSE), /* pcrel_offset */
1786
1787 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1788 offset to the entry relative to the TOC base (r2). */
1789 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM
1790 0, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1792 16, /* bitsize */
b34976b6 1793 FALSE, /* pc_relative */
5bd4f169
AM
1794 0, /* bitpos */
1795 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1798 FALSE, /* partial_inplace */
d006db6c 1799 0, /* src_mask */
ad8e1ba5 1800 0xfffc, /* dst_mask */
b34976b6 1801 FALSE), /* pcrel_offset */
5bd4f169 1802
411e1bfb
AM
1803 /* Like GOT_TPREL16_DS, but no overflow. */
1804 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM
1805 0, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1807 16, /* bitsize */
b34976b6 1808 FALSE, /* pc_relative */
5bd4f169
AM
1809 0, /* bitpos */
1810 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1813 FALSE, /* partial_inplace */
d006db6c 1814 0, /* src_mask */
ad8e1ba5 1815 0xfffc, /* dst_mask */
b34976b6 1816 FALSE), /* pcrel_offset */
5bd4f169 1817
411e1bfb
AM
1818 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1819 HOWTO (R_PPC64_GOT_TPREL16_HI,
1820 16, /* rightshift */
5bd4f169
AM
1821 1, /* size (0 = byte, 1 = short, 2 = long) */
1822 16, /* bitsize */
b34976b6 1823 FALSE, /* pc_relative */
5bd4f169 1824 0, /* bitpos */
411e1bfb 1825 complain_overflow_dont, /* complain_on_overflow */
805fc799 1826 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1827 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1828 FALSE, /* partial_inplace */
d006db6c 1829 0, /* src_mask */
411e1bfb 1830 0xffff, /* dst_mask */
b34976b6 1831 FALSE), /* pcrel_offset */
5bd4f169 1832
411e1bfb
AM
1833 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1834 HOWTO (R_PPC64_GOT_TPREL16_HA,
1835 16, /* rightshift */
5bd4f169
AM
1836 1, /* size (0 = byte, 1 = short, 2 = long) */
1837 16, /* bitsize */
b34976b6 1838 FALSE, /* pc_relative */
5bd4f169
AM
1839 0, /* bitpos */
1840 complain_overflow_dont, /* complain_on_overflow */
805fc799 1841 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1842 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1843 FALSE, /* partial_inplace */
d006db6c 1844 0, /* src_mask */
411e1bfb 1845 0xffff, /* dst_mask */
b34976b6 1846 FALSE), /* pcrel_offset */
5bd4f169
AM
1847
1848 /* GNU extension to record C++ vtable hierarchy. */
1849 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1850 0, /* rightshift */
1851 0, /* size (0 = byte, 1 = short, 2 = long) */
1852 0, /* bitsize */
b34976b6 1853 FALSE, /* pc_relative */
5bd4f169
AM
1854 0, /* bitpos */
1855 complain_overflow_dont, /* complain_on_overflow */
1856 NULL, /* special_function */
1857 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1858 FALSE, /* partial_inplace */
5bd4f169
AM
1859 0, /* src_mask */
1860 0, /* dst_mask */
b34976b6 1861 FALSE), /* pcrel_offset */
5bd4f169
AM
1862
1863 /* GNU extension to record C++ vtable member usage. */
1864 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1865 0, /* rightshift */
1866 0, /* size (0 = byte, 1 = short, 2 = long) */
1867 0, /* bitsize */
b34976b6 1868 FALSE, /* pc_relative */
5bd4f169
AM
1869 0, /* bitpos */
1870 complain_overflow_dont, /* complain_on_overflow */
1871 NULL, /* special_function */
1872 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1873 FALSE, /* partial_inplace */
5bd4f169
AM
1874 0, /* src_mask */
1875 0, /* dst_mask */
b34976b6 1876 FALSE), /* pcrel_offset */
5bd4f169
AM
1877};
1878
1879\f
1880/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1881 be done. */
1882
1883static void
4ce794b7 1884ppc_howto_init (void)
5bd4f169
AM
1885{
1886 unsigned int i, type;
1887
1888 for (i = 0;
1889 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1890 i++)
1891 {
1892 type = ppc64_elf_howto_raw[i].type;
1893 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1894 / sizeof (ppc64_elf_howto_table[0])));
1895 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1896 }
1897}
1898
1899static reloc_howto_type *
4ce794b7
AM
1900ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1901 bfd_reloc_code_real_type code)
5bd4f169 1902{
411e1bfb 1903 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM
1904
1905 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1906 /* Initialize howto table if needed. */
1907 ppc_howto_init ();
1908
4ce794b7 1909 switch (code)
5bd4f169
AM
1910 {
1911 default:
4ce794b7 1912 return NULL;
5bd4f169 1913
411e1bfb
AM
1914 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1915 break;
1916 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1917 break;
1918 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1919 break;
1920 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1921 break;
1922 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1923 break;
1924 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1925 break;
1926 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2031 break;
411e1bfb 2032 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2033 break;
411e1bfb 2034 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2035 break;
411e1bfb 2036 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2037 break;
411e1bfb 2038 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2039 break;
411e1bfb 2040 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2041 break;
411e1bfb 2042 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2043 break;
411e1bfb 2044 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2045 break;
411e1bfb
AM
2046 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2047 break;
2048 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2049 break;
2050 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2051 break;
2052 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2053 break;
2054 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2065 break;
2066 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2067 break;
2068 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2069 break;
2070 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2071 break;
2072 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2073 break;
2074 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2075 break;
2076 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2077 break;
2078 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2079 break;
2080 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2081 break;
2082 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2083 break;
2084 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2085 break;
2086 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2087 break;
2088 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2089 break;
2090 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2091 break;
2092 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2093 break;
2094 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2095 break;
2096 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2097 break;
2098 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2099 break;
2100 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2101 break;
2102 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2103 break;
2104 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2105 break;
2106 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2107 break;
2108 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2109 break;
2110 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2111 break;
2112 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2113 break;
2114 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM
2115 break;
2116 }
2117
4ce794b7 2118 return ppc64_elf_howto_table[r];
5bd4f169
AM
2119};
2120
157090f7
AM
2121static reloc_howto_type *
2122ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2123 const char *r_name)
2124{
2125 unsigned int i;
2126
2127 for (i = 0;
2128 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2129 i++)
2130 if (ppc64_elf_howto_raw[i].name != NULL
2131 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2132 return &ppc64_elf_howto_raw[i];
2133
2134 return NULL;
2135}
2136
5bd4f169
AM
2137/* Set the howto pointer for a PowerPC ELF reloc. */
2138
2139static void
4ce794b7
AM
2140ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2141 Elf_Internal_Rela *dst)
5bd4f169 2142{
65f38f15
AM
2143 unsigned int type;
2144
ef60b7ff 2145 /* Initialize howto table if needed. */
5bd4f169 2146 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
2147 ppc_howto_init ();
2148
65f38f15 2149 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ
2150 if (type >= (sizeof (ppc64_elf_howto_table)
2151 / sizeof (ppc64_elf_howto_table[0])))
2152 {
2153 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC
2154 abfd, (int) type);
2155 type = R_PPC64_NONE;
d0fb9a8d 2156 }
65f38f15 2157 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM
2158}
2159
04c9666a 2160/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM
2161
2162static bfd_reloc_status_type
4ce794b7
AM
2163ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2164 void *data, asection *input_section,
2165 bfd *output_bfd, char **error_message)
5bd4f169 2166{
805fc799
AM
2167 /* If this is a relocatable link (output_bfd test tells us), just
2168 call the generic function. Any adjustment will be done at final
2169 link time. */
2170 if (output_bfd != NULL)
cedb70c5 2171 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2172 input_section, output_bfd, error_message);
2173
2174 /* Adjust the addend for sign extension of the low 16 bits.
2175 We won't actually be using the low 16 bits, so trashing them
2176 doesn't matter. */
2177 reloc_entry->addend += 0x8000;
2178 return bfd_reloc_continue;
2179}
5bd4f169 2180
2441e016
AM
2181static bfd_reloc_status_type
2182ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2183 void *data, asection *input_section,
2184 bfd *output_bfd, char **error_message)
2185{
2186 if (output_bfd != NULL)
2187 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2188 input_section, output_bfd, error_message);
2189
699733f6
AM
2190 if (strcmp (symbol->section->name, ".opd") == 0
2191 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM
2192 {
2193 bfd_vma dest = opd_entry_value (symbol->section,
2194 symbol->value + reloc_entry->addend,
2195 NULL, NULL);
2196 if (dest != (bfd_vma) -1)
2197 reloc_entry->addend = dest - (symbol->value
2198 + symbol->section->output_section->vma
2199 + symbol->section->output_offset);
2200 }
2201 return bfd_reloc_continue;
2202}
2203
805fc799 2204static bfd_reloc_status_type
4ce794b7
AM
2205ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2206 void *data, asection *input_section,
2207 bfd *output_bfd, char **error_message)
805fc799
AM
2208{
2209 long insn;
04c9666a 2210 enum elf_ppc64_reloc_type r_type;
805fc799
AM
2211 bfd_size_type octets;
2212 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2213 bfd_boolean is_power4 = FALSE;
805fc799
AM
2214
2215 /* If this is a relocatable link (output_bfd test tells us), just
2216 call the generic function. Any adjustment will be done at final
2217 link time. */
5bd4f169 2218 if (output_bfd != NULL)
cedb70c5 2219 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2220 input_section, output_bfd, error_message);
2221
2222 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2223 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2224 insn &= ~(0x01 << 21);
4ce794b7 2225 r_type = reloc_entry->howto->type;
805fc799
AM
2226 if (r_type == R_PPC64_ADDR14_BRTAKEN
2227 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2228 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM
2229
2230 if (is_power4)
5bd4f169 2231 {
805fc799
AM
2232 /* Set 'a' bit. This is 0b00010 in BO field for branch
2233 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2234 for branch on CTR insns (BO == 1a00t or 1a01t). */
2235 if ((insn & (0x14 << 21)) == (0x04 << 21))
2236 insn |= 0x02 << 21;
2237 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2238 insn |= 0x08 << 21;
2239 else
2441e016 2240 goto out;
5bd4f169 2241 }
805fc799
AM
2242 else
2243 {
2244 bfd_vma target = 0;
2245 bfd_vma from;
5bd4f169 2246
805fc799
AM
2247 if (!bfd_is_com_section (symbol->section))
2248 target = symbol->value;
2249 target += symbol->section->output_section->vma;
2250 target += symbol->section->output_offset;
2251 target += reloc_entry->addend;
5bd4f169 2252
805fc799
AM
2253 from = (reloc_entry->address
2254 + input_section->output_offset
2255 + input_section->output_section->vma);
5bd4f169 2256
805fc799
AM
2257 /* Invert 'y' bit if not the default. */
2258 if ((bfd_signed_vma) (target - from) < 0)
2259 insn ^= 0x01 << 21;
2260 }
4ce794b7 2261 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM
2262 out:
2263 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2264 input_section, output_bfd, error_message);
805fc799 2265}
5bd4f169 2266
805fc799 2267static bfd_reloc_status_type
4ce794b7
AM
2268ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2269 void *data, asection *input_section,
2270 bfd *output_bfd, char **error_message)
805fc799
AM
2271{
2272 /* If this is a relocatable link (output_bfd test tells us), just
2273 call the generic function. Any adjustment will be done at final
2274 link time. */
2275 if (output_bfd != NULL)
cedb70c5 2276 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2277 input_section, output_bfd, error_message);
5bd4f169 2278
805fc799
AM
2279 /* Subtract the symbol section base address. */
2280 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM
2281 return bfd_reloc_continue;
2282}
2283
805fc799 2284static bfd_reloc_status_type
4ce794b7
AM
2285ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2286 void *data, asection *input_section,
2287 bfd *output_bfd, char **error_message)
805fc799
AM
2288{
2289 /* If this is a relocatable link (output_bfd test tells us), just
2290 call the generic function. Any adjustment will be done at final
2291 link time. */
2292 if (output_bfd != NULL)
cedb70c5 2293 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2294 input_section, output_bfd, error_message);
2295
2296 /* Subtract the symbol section base address. */
2297 reloc_entry->addend -= symbol->section->output_section->vma;
2298
2299 /* Adjust the addend for sign extension of the low 16 bits. */
2300 reloc_entry->addend += 0x8000;
2301 return bfd_reloc_continue;
2302}
2303
2304static bfd_reloc_status_type
4ce794b7
AM
2305ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2306 void *data, asection *input_section,
2307 bfd *output_bfd, char **error_message)
805fc799
AM
2308{
2309 bfd_vma TOCstart;
2310
2311 /* If this is a relocatable link (output_bfd test tells us), just
2312 call the generic function. Any adjustment will be done at final
2313 link time. */
2314 if (output_bfd != NULL)
cedb70c5 2315 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2316 input_section, output_bfd, error_message);
2317
2318 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2319 if (TOCstart == 0)
2320 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2321
2322 /* Subtract the TOC base address. */
2323 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2324 return bfd_reloc_continue;
2325}
2326
2327static bfd_reloc_status_type
4ce794b7
AM
2328ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2329 void *data, asection *input_section,
2330 bfd *output_bfd, char **error_message)
805fc799
AM
2331{
2332 bfd_vma TOCstart;
2333
2334 /* If this is a relocatable link (output_bfd test tells us), just
2335 call the generic function. Any adjustment will be done at final
2336 link time. */
2337 if (output_bfd != NULL)
cedb70c5 2338 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2339 input_section, output_bfd, error_message);
2340
2341 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2342 if (TOCstart == 0)
2343 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2344
2345 /* Subtract the TOC base address. */
2346 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2347
2348 /* Adjust the addend for sign extension of the low 16 bits. */
2349 reloc_entry->addend += 0x8000;
2350 return bfd_reloc_continue;
2351}
2352
2353static bfd_reloc_status_type
4ce794b7
AM
2354ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2355 void *data, asection *input_section,
2356 bfd *output_bfd, char **error_message)
805fc799
AM
2357{
2358 bfd_vma TOCstart;
2359 bfd_size_type octets;
2360
2361 /* If this is a relocatable link (output_bfd test tells us), just
2362 call the generic function. Any adjustment will be done at final
2363 link time. */
2364 if (output_bfd != NULL)
cedb70c5 2365 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2366 input_section, output_bfd, error_message);
2367
2368 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2369 if (TOCstart == 0)
2370 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2371
2372 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2373 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2374 return bfd_reloc_ok;
2375}
2376
2377static bfd_reloc_status_type
4ce794b7
AM
2378ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2379 void *data, asection *input_section,
2380 bfd *output_bfd, char **error_message)
805fc799
AM
2381{
2382 /* If this is a relocatable link (output_bfd test tells us), just
2383 call the generic function. Any adjustment will be done at final
2384 link time. */
2385 if (output_bfd != NULL)
cedb70c5 2386 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2387 input_section, output_bfd, error_message);
2388
2389 if (error_message != NULL)
2390 {
2391 static char buf[60];
2392 sprintf (buf, "generic linker can't handle %s",
2393 reloc_entry->howto->name);
2394 *error_message = buf;
2395 }
2396 return bfd_reloc_dangerous;
2397}
2398
e717da7e
AM
2399struct ppc64_elf_obj_tdata
2400{
2401 struct elf_obj_tdata elf;
2402
2403 /* Shortcuts to dynamic linker sections. */
2404 asection *got;
2405 asection *relgot;
2406
b3fac117
AM
2407 /* Used during garbage collection. We attach global symbols defined
2408 on removed .opd entries to this section so that the sym is removed. */
2409 asection *deleted_section;
81688140 2410
e717da7e
AM
2411 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2412 sections means we potentially need one of these for each input bfd. */
2413 union {
2414 bfd_signed_vma refcount;
2415 bfd_vma offset;
2416 } tlsld_got;
8860955f
AM
2417
2418 /* A copy of relocs before they are modified for --emit-relocs. */
2419 Elf_Internal_Rela *opd_relocs;
e717da7e
AM
2420};
2421
2422#define ppc64_elf_tdata(bfd) \
2423 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2424
2425#define ppc64_tlsld_got(bfd) \
2426 (&ppc64_elf_tdata (bfd)->tlsld_got)
2427
0c8d6e5c
AM
2428#define is_ppc64_elf(bfd) \
2429 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2430 && elf_object_id (bfd) == PPC64_ELF_TDATA)
2431
e717da7e
AM
2432/* Override the generic function because we store some extras. */
2433
2434static bfd_boolean
2435ppc64_elf_mkobject (bfd *abfd)
2436{
0ffa91dd
NC
2437 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2438 PPC64_ELF_TDATA);
e717da7e
AM
2439}
2440
feee612b
AM
2441/* Fix bad default arch selected for a 64 bit input bfd when the
2442 default is 32 bit. */
2443
b34976b6 2444static bfd_boolean
4ce794b7 2445ppc64_elf_object_p (bfd *abfd)
feee612b
AM
2446{
2447 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2448 {
2449 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2450
2451 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2452 {
2453 /* Relies on arch after 32 bit default being 64 bit default. */
2454 abfd->arch_info = abfd->arch_info->next;
2455 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2456 }
2457 }
b34976b6 2458 return TRUE;
feee612b
AM
2459}
2460
d37c89e5
AM
2461/* Support for core dump NOTE sections. */
2462
2463static bfd_boolean
2464ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2465{
eea6121a 2466 size_t offset, size;
d37c89e5
AM
2467
2468 if (note->descsz != 504)
2469 return FALSE;
2470
2471 /* pr_cursig */
2472 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2473
2474 /* pr_pid */
2475 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2476
2477 /* pr_reg */
2478 offset = 112;
eea6121a 2479 size = 384;
d37c89e5
AM
2480
2481 /* Make a ".reg/999" section. */
2482 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2483 size, note->descpos + offset);
d37c89e5
AM
2484}
2485
2486static bfd_boolean
2487ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2488{
2489 if (note->descsz != 136)
2490 return FALSE;
2491
2492 elf_tdata (abfd)->core_program
2493 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2494 elf_tdata (abfd)->core_command
2495 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2496
2497 return TRUE;
2498}
2499
183e98be
AM
2500static char *
2501ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2502 ...)
2503{
2504 switch (note_type)
2505 {
2506 default:
2507 return NULL;
2508
2509 case NT_PRPSINFO:
2510 {
2511 char data[136];
2512 va_list ap;
2513
2514 va_start (ap, note_type);
2515 memset (data, 0, 40);
2516 strncpy (data + 40, va_arg (ap, const char *), 16);
2517 strncpy (data + 56, va_arg (ap, const char *), 80);
2518 va_end (ap);
2519 return elfcore_write_note (abfd, buf, bufsiz,
2520 "CORE", note_type, data, sizeof (data));
2521 }
2522
2523 case NT_PRSTATUS:
2524 {
2525 char data[504];
2526 va_list ap;
2527 long pid;
2528 int cursig;
2529 const void *greg;
2530
2531 va_start (ap, note_type);
2532 memset (data, 0, 112);
2533 pid = va_arg (ap, long);
2534 bfd_put_32 (abfd, pid, data + 32);
2535 cursig = va_arg (ap, int);
2536 bfd_put_16 (abfd, cursig, data + 12);
2537 greg = va_arg (ap, const void *);
2538 memcpy (data + 112, greg, 384);
2539 memset (data + 496, 0, 8);
2540 va_end (ap);
2541 return elfcore_write_note (abfd, buf, bufsiz,
2542 "CORE", note_type, data, sizeof (data));
2543 }
2544 }
2545}
2546
5bd4f169
AM
2547/* Merge backend specific data from an object file to the output
2548 object file when linking. */
2f6d9989 2549
b34976b6 2550static bfd_boolean
4ce794b7 2551ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2552{
5bd4f169
AM
2553 /* Check if we have the same endianess. */
2554 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2555 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM
2556 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2557 {
2558 const char *msg;
2559
2560 if (bfd_big_endian (ibfd))
d003868e 2561 msg = _("%B: compiled for a big endian system "
4ce794b7 2562 "and target is little endian");
5bd4f169 2563 else
d003868e 2564 msg = _("%B: compiled for a little endian system "
4ce794b7 2565 "and target is big endian");
5bd4f169 2566
d003868e 2567 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM
2568
2569 bfd_set_error (bfd_error_wrong_format);
b34976b6 2570 return FALSE;
5bd4f169
AM
2571 }
2572
b34976b6 2573 return TRUE;
5bd4f169 2574}
f0abc2a1 2575
5d35169e
AM
2576/* Add extra PPC sections. */
2577
b35d266b 2578static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2579{
0112cd26
NC
2580 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2581 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2582 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2583 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2584 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2585 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2586 { NULL, 0, 0, 0, 0 }
5d35169e
AM
2587};
2588
7c8fe5c4
AM
2589enum _ppc64_sec_type {
2590 sec_normal = 0,
2591 sec_opd = 1,
2592 sec_toc = 2
2593};
2594
f0abc2a1
AM
2595struct _ppc64_elf_section_data
2596{
2597 struct bfd_elf_section_data elf;
411e1bfb 2598
f0abc2a1
AM
2599 union
2600 {
74f0fb50
AM
2601 /* An array with one entry for each opd function descriptor. */
2602 struct _opd_sec_data
2603 {
2604 /* Points to the function code section for local opd entries. */
2605 asection **func_sec;
2606
2607 /* After editing .opd, adjust references to opd local syms. */
2608 long *adjust;
2609 } opd;
7c8fe5c4
AM
2610
2611 /* An array for toc sections, indexed by offset/8.
2612 Specifies the relocation symbol index used at a given toc offset. */
2613 unsigned *t_symndx;
2614 } u;
2615
2616 enum _ppc64_sec_type sec_type:2;
411e1bfb 2617
7c8fe5c4
AM
2618 /* Flag set when small branches are detected. Used to
2619 select suitable defaults for the stub group size. */
2620 unsigned int has_14bit_branch:1;
f0abc2a1
AM
2621};
2622
2623#define ppc64_elf_section_data(sec) \
411e1bfb 2624 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM
2625
2626static bfd_boolean
4ce794b7 2627ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2628{
f592407e
AM
2629 if (!sec->used_by_bfd)
2630 {
2631 struct _ppc64_elf_section_data *sdata;
2632 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2633
f592407e
AM
2634 sdata = bfd_zalloc (abfd, amt);
2635 if (sdata == NULL)
2636 return FALSE;
2637 sec->used_by_bfd = sdata;
2638 }
f0abc2a1
AM
2639
2640 return _bfd_elf_new_section_hook (abfd, sec);
2641}
4025353c 2642
74f0fb50 2643static struct _opd_sec_data *
4025353c
AM
2644get_opd_info (asection * sec)
2645{
2646 if (sec != NULL
2647 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 2648 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 2649 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM
2650 return NULL;
2651}
90e3cdf2
JJ
2652\f
2653/* Parameters for the qsort hook. */
2654static asection *synthetic_opd;
2655static bfd_boolean synthetic_relocatable;
2656
699733f6 2657/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ
2658
2659static int
2660compare_symbols (const void *ap, const void *bp)
2661{
2662 const asymbol *a = * (const asymbol **) ap;
2663 const asymbol *b = * (const asymbol **) bp;
2664
699733f6
AM
2665 /* Section symbols first. */
2666 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2667 return -1;
699733f6 2668 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ
2669 return 1;
2670
699733f6 2671 /* then .opd symbols. */
90e3cdf2
JJ
2672 if (a->section == synthetic_opd && b->section != synthetic_opd)
2673 return -1;
2674 if (a->section != synthetic_opd && b->section == synthetic_opd)
2675 return 1;
2676
699733f6 2677 /* then other code symbols. */
90e3cdf2
JJ
2678 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2679 == (SEC_CODE | SEC_ALLOC)
2680 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2681 != (SEC_CODE | SEC_ALLOC))
2682 return -1;
2683
2684 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2685 != (SEC_CODE | SEC_ALLOC)
2686 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2687 == (SEC_CODE | SEC_ALLOC))
2688 return 1;
2689
2690 if (synthetic_relocatable)
2691 {
2692 if (a->section->id < b->section->id)
2693 return -1;
2694
2695 if (a->section->id > b->section->id)
2696 return 1;
2697 }
2698
2699 if (a->value + a->section->vma < b->value + b->section->vma)
2700 return -1;
2701
2702 if (a->value + a->section->vma > b->value + b->section->vma)
2703 return 1;
2704
4d35a0aa
AM
2705 /* For syms with the same value, prefer strong dynamic global function
2706 syms over other syms. */
2707 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2708 return -1;
2709
2710 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2711 return 1;
2712
2713 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2714 return -1;
2715
2716 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2717 return 1;
2718
2719 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2720 return -1;
2721
2722 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2723 return 1;
2724
2725 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2726 return -1;
2727
2728 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2729 return 1;
2730
90e3cdf2
JJ
2731 return 0;
2732}
2733
699733f6 2734/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2735
699733f6
AM
2736static asymbol *
2737sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2738{
699733f6 2739 long mid;
90e3cdf2 2740
699733f6
AM
2741 if (id == -1)
2742 {
2743 while (lo < hi)
2744 {
2745 mid = (lo + hi) >> 1;
2746 if (syms[mid]->value + syms[mid]->section->vma < value)
2747 lo = mid + 1;
2748 else if (syms[mid]->value + syms[mid]->section->vma > value)
2749 hi = mid;
2750 else
2751 return syms[mid];
2752 }
2753 }
2754 else
2755 {
2756 while (lo < hi)
2757 {
2758 mid = (lo + hi) >> 1;
2759 if (syms[mid]->section->id < id)
2760 lo = mid + 1;
2761 else if (syms[mid]->section->id > id)
2762 hi = mid;
2763 else if (syms[mid]->value < value)
2764 lo = mid + 1;
2765 else if (syms[mid]->value > value)
2766 hi = mid;
2767 else
2768 return syms[mid];
2769 }
2770 }
2771 return NULL;
90e3cdf2
JJ
2772}
2773
699733f6
AM
2774/* Create synthetic symbols, effectively restoring "dot-symbol" function
2775 entry syms. */
90e3cdf2
JJ
2776
2777static long
a7535cf3
AM
2778ppc64_elf_get_synthetic_symtab (bfd *abfd,
2779 long static_count, asymbol **static_syms,
2780 long dyn_count, asymbol **dyn_syms,
c9727e01 2781 asymbol **ret)
90e3cdf2
JJ
2782{
2783 asymbol *s;
699733f6
AM
2784 long i;
2785 long count;
90e3cdf2 2786 char *names;
a7535cf3 2787 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2788 asection *opd;
90e3cdf2 2789 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2790 asymbol **syms;
90e3cdf2
JJ
2791
2792 *ret = NULL;
2793
2794 opd = bfd_get_section_by_name (abfd, ".opd");
2795 if (opd == NULL)
2796 return 0;
2797
a7535cf3 2798 symcount = static_count;
c9727e01 2799 if (!relocatable)
a7535cf3 2800 symcount += dyn_count;
90e3cdf2 2801 if (symcount == 0)
c9727e01 2802 return 0;
90e3cdf2 2803
a7535cf3
AM
2804 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2805 if (syms == NULL)
7356fed5 2806 return -1;
a7535cf3
AM
2807
2808 if (!relocatable && static_count != 0 && dyn_count != 0)
2809 {
2810 /* Use both symbol tables. */
2811 memcpy (syms, static_syms, static_count * sizeof (*syms));
2812 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2813 }
2814 else if (!relocatable && static_count == 0)
2815 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2816 else
2817 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2818
90e3cdf2
JJ
2819 synthetic_opd = opd;
2820 synthetic_relocatable = relocatable;
595da8c5 2821 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2822
c9727e01
AM
2823 if (!relocatable && symcount > 1)
2824 {
2825 long j;
2826 /* Trim duplicate syms, since we may have merged the normal and
2827 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2828 different values, so trim any with the same value. */
c9727e01
AM
2829 for (i = 1, j = 1; i < symcount; ++i)
2830 if (syms[i - 1]->value + syms[i - 1]->section->vma
2831 != syms[i]->value + syms[i]->section->vma)
2832 syms[j++] = syms[i];
2833 symcount = j;
2834 }
2835
699733f6
AM
2836 i = 0;
2837 if (syms[i]->section == opd)
2838 ++i;
2839 codesecsym = i;
90e3cdf2 2840
699733f6
AM
2841 for (; i < symcount; ++i)
2842 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2843 != (SEC_CODE | SEC_ALLOC))
2844 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2845 break;
2846 codesecsymend = i;
90e3cdf2 2847
699733f6
AM
2848 for (; i < symcount; ++i)
2849 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2850 break;
2851 secsymend = i;
90e3cdf2 2852
699733f6
AM
2853 for (; i < symcount; ++i)
2854 if (syms[i]->section != opd)
2855 break;
2856 opdsymend = i;
90e3cdf2 2857
699733f6
AM
2858 for (; i < symcount; ++i)
2859 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2860 != (SEC_CODE | SEC_ALLOC))
2861 break;
2862 symcount = i;
2863
c9727e01 2864 count = 0;
699733f6 2865 if (opdsymend == secsymend)
c9727e01 2866 goto done;
90e3cdf2 2867
699733f6 2868 if (relocatable)
90e3cdf2 2869 {
699733f6
AM
2870 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2871 arelent *r;
2872 size_t size;
2873 long relcount;
90e3cdf2 2874
699733f6 2875 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2876 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2877 if (relcount == 0)
c9727e01 2878 goto done;
90e3cdf2 2879
7356fed5
AM
2880 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2881 {
2882 count = -1;
2883 goto done;
2884 }
2885
699733f6 2886 size = 0;
595da8c5 2887 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM
2888 {
2889 asymbol *sym;
90e3cdf2 2890
595da8c5 2891 while (r < opd->relocation + relcount
699733f6
AM
2892 && r->address < syms[i]->value + opd->vma)
2893 ++r;
90e3cdf2 2894
595da8c5 2895 if (r == opd->relocation + relcount)
699733f6 2896 break;
90e3cdf2 2897
699733f6
AM
2898 if (r->address != syms[i]->value + opd->vma)
2899 continue;
90e3cdf2 2900
699733f6
AM
2901 if (r->howto->type != R_PPC64_ADDR64)
2902 continue;
90e3cdf2 2903
699733f6
AM
2904 sym = *r->sym_ptr_ptr;
2905 if (!sym_exists_at (syms, opdsymend, symcount,
2906 sym->section->id, sym->value + r->addend))
2907 {
2908 ++count;
2909 size += sizeof (asymbol);
2910 size += strlen (syms[i]->name) + 2;
2911 }
2912 }
90e3cdf2 2913
699733f6
AM
2914 s = *ret = bfd_malloc (size);
2915 if (s == NULL)
2916 {
7356fed5 2917 count = -1;
c9727e01 2918 goto done;
699733f6 2919 }
90e3cdf2 2920
699733f6 2921 names = (char *) (s + count);
90e3cdf2 2922
595da8c5 2923 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2924 {
699733f6 2925 asymbol *sym;
90e3cdf2 2926
595da8c5 2927 while (r < opd->relocation + relcount
699733f6
AM
2928 && r->address < syms[i]->value + opd->vma)
2929 ++r;
90e3cdf2 2930
595da8c5 2931 if (r == opd->relocation + relcount)
699733f6
AM
2932 break;
2933
2934 if (r->address != syms[i]->value + opd->vma)
2935 continue;
2936
2937 if (r->howto->type != R_PPC64_ADDR64)
2938 continue;
90e3cdf2 2939
699733f6
AM
2940 sym = *r->sym_ptr_ptr;
2941 if (!sym_exists_at (syms, opdsymend, symcount,
2942 sym->section->id, sym->value + r->addend))
2943 {
2944 size_t len;
2945
2946 *s = *syms[i];
2947 s->section = sym->section;
2948 s->value = sym->value + r->addend;
2949 s->name = names;
2950 *names++ = '.';
2951 len = strlen (syms[i]->name);
2952 memcpy (names, syms[i]->name, len + 1);
2953 names += len + 1;
6f610d07
UW
2954 /* Have udata.p point back to the original symbol this
2955 synthetic symbol was derived from. */
2956 s->udata.p = syms[i];
699733f6
AM
2957 s++;
2958 }
2959 }
2960 }
2961 else
90e3cdf2 2962 {
699733f6
AM
2963 bfd_byte *contents;
2964 size_t size;
90e3cdf2 2965
699733f6
AM
2966 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2967 {
2968 if (contents)
c9727e01
AM
2969 {
2970 free_contents_and_exit:
2971 free (contents);
2972 }
7356fed5 2973 count = -1;
c9727e01 2974 goto done;
699733f6 2975 }
90e3cdf2 2976
699733f6
AM
2977 size = 0;
2978 for (i = secsymend; i < opdsymend; ++i)
2979 {
2980 bfd_vma ent;
90e3cdf2 2981
699733f6
AM
2982 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2983 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2984 {
2985 ++count;
2986 size += sizeof (asymbol);
2987 size += strlen (syms[i]->name) + 2;
2988 }
2989 }
90e3cdf2 2990
699733f6
AM
2991 s = *ret = bfd_malloc (size);
2992 if (s == NULL)
7356fed5 2993 goto free_contents_and_exit;
90e3cdf2 2994
699733f6 2995 names = (char *) (s + count);
90e3cdf2 2996
699733f6 2997 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2998 {
699733f6 2999 bfd_vma ent;
90e3cdf2 3000
699733f6
AM
3001 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3002 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3003 {
c9727e01 3004 long lo, hi;
699733f6 3005 size_t len;
c9727e01 3006 asection *sec = abfd->sections;
90e3cdf2 3007
699733f6
AM
3008 *s = *syms[i];
3009 lo = codesecsym;
3010 hi = codesecsymend;
3011 while (lo < hi)
3012 {
c9727e01 3013 long mid = (lo + hi) >> 1;
699733f6
AM
3014 if (syms[mid]->section->vma < ent)
3015 lo = mid + 1;
3016 else if (syms[mid]->section->vma > ent)
3017 hi = mid;
3018 else
c9727e01
AM
3019 {
3020 sec = syms[mid]->section;
3021 break;
3022 }
699733f6
AM
3023 }
3024
c9727e01 3025 if (lo >= hi && lo > codesecsym)
699733f6 3026 sec = syms[lo - 1]->section;
699733f6
AM
3027
3028 for (; sec != NULL; sec = sec->next)
3029 {
3030 if (sec->vma > ent)
3031 break;
3032 if ((sec->flags & SEC_ALLOC) == 0
3033 || (sec->flags & SEC_LOAD) == 0)
3034 break;
3035 if ((sec->flags & SEC_CODE) != 0)
3036 s->section = sec;
3037 }
3038 s->value = ent - s->section->vma;
3039 s->name = names;
3040 *names++ = '.';
3041 len = strlen (syms[i]->name);
3042 memcpy (names, syms[i]->name, len + 1);
3043 names += len + 1;
6f610d07
UW
3044 /* Have udata.p point back to the original symbol this
3045 synthetic symbol was derived from. */
3046 s->udata.p = syms[i];
699733f6 3047 s++;
90e3cdf2 3048 }
90e3cdf2 3049 }
699733f6 3050 free (contents);
90e3cdf2
JJ
3051 }
3052
c9727e01 3053 done:
a7535cf3 3054 free (syms);
90e3cdf2
JJ
3055 return count;
3056}
5bd4f169 3057\f
65f38f15
AM
3058/* The following functions are specific to the ELF linker, while
3059 functions above are used generally. Those named ppc64_elf_* are
3060 called by the main ELF linker code. They appear in this file more
3061 or less in the order in which they are called. eg.
3062 ppc64_elf_check_relocs is called early in the link process,
3063 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM
3064 called.
3065
3066 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3067 functions have both a function code symbol and a function descriptor
3068 symbol. A call to foo in a relocatable object file looks like:
3069
3070 . .text
3071 . x:
3072 . bl .foo
3073 . nop
3074
3075 The function definition in another object file might be:
3076
3077 . .section .opd
3078 . foo: .quad .foo
3079 . .quad .TOC.@tocbase
3080 . .quad 0
3081 .
3082 . .text
3083 . .foo: blr
3084
3085 When the linker resolves the call during a static link, the branch
3086 unsurprisingly just goes to .foo and the .opd information is unused.
3087 If the function definition is in a shared library, things are a little
3088 different: The call goes via a plt call stub, the opd information gets
3089 copied to the plt, and the linker patches the nop.
3090
3091 . x:
3092 . bl .foo_stub
3093 . ld 2,40(1)
3094 .
3095 .
3096 . .foo_stub:
3097 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3098 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM
3099 . std 2,40(1) # this is the general idea
3100 . ld 11,0(12)
3101 . ld 2,8(12)
3102 . mtctr 11
3103 . ld 11,16(12)
3104 . bctr
3105 .
3106 . .section .plt
3107 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3108
3109 The "reloc ()" notation is supposed to indicate that the linker emits
3110 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3111 copying.
3112
3113 What are the difficulties here? Well, firstly, the relocations
3114 examined by the linker in check_relocs are against the function code
3115 sym .foo, while the dynamic relocation in the plt is emitted against
3116 the function descriptor symbol, foo. Somewhere along the line, we need
3117 to carefully copy dynamic link information from one symbol to the other.
3118 Secondly, the generic part of the elf linker will make .foo a dynamic
3119 symbol as is normal for most other backends. We need foo dynamic
3120 instead, at least for an application final link. However, when
3121 creating a shared library containing foo, we need to have both symbols
3122 dynamic so that references to .foo are satisfied during the early
3123 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM
3124 definition from some other object, eg. a static library.
3125
3126 Update: As of August 2004, we support a new convention. Function
3127 calls may use the function descriptor symbol, ie. "bl foo". This
3128 behaves exactly as "bl .foo". */
65f38f15
AM
3129
3130/* The linker needs to keep track of the number of relocs that it
3131 decides to copy as dynamic relocs in check_relocs for each symbol.
3132 This is so that it can later discard them if they are found to be
3133 unnecessary. We store the information in a field extending the
3134 regular ELF linker hash table. */
3135
3136struct ppc_dyn_relocs
3137{
3138 struct ppc_dyn_relocs *next;
3139
3140 /* The input section of the reloc. */
3141 asection *sec;
3142
3143 /* Total number of relocs copied for the input section. */
3144 bfd_size_type count;
3145
3146 /* Number of pc-relative relocs copied for the input section. */
3147 bfd_size_type pc_count;
3148};
3149
411e1bfb
AM
3150/* Track GOT entries needed for a given symbol. We might need more
3151 than one got entry per symbol. */
3152struct got_entry
3153{
3154 struct got_entry *next;
3155
e7b938ca 3156 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM
3157 bfd_vma addend;
3158
e717da7e
AM
3159 /* Unlike other ELF targets, we use separate GOT entries for the same
3160 symbol referenced from different input files. This is to support
3161 automatic multiple TOC/GOT sections, where the TOC base can vary
102890f0
AM
3162 from one input file to another. FIXME: After group_sections we
3163 ought to merge entries within the group.
e717da7e
AM
3164
3165 Point to the BFD owning this GOT entry. */
3166 bfd *owner;
3167
3168 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3169 TLS_TPREL or TLS_DTPREL for tls entries. */
3170 char tls_type;
3171
e7b938ca 3172 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM
3173 union
3174 {
3175 bfd_signed_vma refcount;
3176 bfd_vma offset;
3177 } got;
411e1bfb
AM
3178};
3179
3180/* The same for PLT. */
3181struct plt_entry
3182{
3183 struct plt_entry *next;
3184
3185 bfd_vma addend;
3186
3187 union
3188 {
3189 bfd_signed_vma refcount;
3190 bfd_vma offset;
3191 } plt;
3192};
3193
65f38f15 3194/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM
3195 selects those that must be copied when linking a shared library,
3196 even when the symbol is local. */
65f38f15 3197
411e1bfb 3198#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM
3199 ((RTYPE) != R_PPC64_REL32 \
3200 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3201 && (RTYPE) != R_PPC64_REL30)
65f38f15 3202
f4656909
AM
3203/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3204 copying dynamic variables from a shared lib into an app's dynbss
3205 section, and instead use a dynamic relocation to point into the
5d35169e
AM
3206 shared lib. With code that gcc generates, it's vital that this be
3207 enabled; In the PowerPC64 ABI, the address of a function is actually
3208 the address of a function descriptor, which resides in the .opd
3209 section. gcc uses the descriptor directly rather than going via the
3210 GOT as some other ABI's do, which means that initialized function
3211 pointers must reference the descriptor. Thus, a function pointer
3212 initialized to the address of a function in a shared library will
3213 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3214 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM
3215 presents a problem as a plt entry for that function is also
3216 initialized from the function descriptor symbol and the copy reloc
3217 may not be initialized first. */
a23b6845 3218#define ELIMINATE_COPY_RELOCS 1
f4656909 3219
721956f4
AM
3220/* Section name for stubs is the associated section name plus this
3221 string. */
3222#define STUB_SUFFIX ".stub"
3223
3224/* Linker stubs.
3225 ppc_stub_long_branch:
3226 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3227 destination, but a 24 bit branch in a stub section will reach.
3228 . b dest
3229
3230 ppc_stub_plt_branch:
3231 Similar to the above, but a 24 bit branch in the stub section won't
3232 reach its destination.
87e226ce
AM
3233 . addis %r12,%r2,xxx@toc@ha
3234 . ld %r11,xxx@toc@l(%r12)
721956f4
AM
3235 . mtctr %r11
3236 . bctr
3237
3238 ppc_stub_plt_call:
2c66dc6c
AM
3239 Used to call a function in a shared library. If it so happens that
3240 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3241 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3242 . addis %r12,%r2,xxx@toc@ha
721956f4 3243 . std %r2,40(%r1)
87e226ce 3244 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3245 . mtctr %r11
ac2df442 3246 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3247 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3248 . bctr
ad8e1ba5
AM
3249
3250 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3251 code to adjust the value and save r2 to support multiple toc sections.
3252 A ppc_stub_long_branch with an r2 offset looks like:
3253 . std %r2,40(%r1)
3254 . addis %r2,%r2,off@ha
3255 . addi %r2,%r2,off@l
3256 . b dest
3257
3258 A ppc_stub_plt_branch with an r2 offset looks like:
3259 . std %r2,40(%r1)
3260 . addis %r12,%r2,xxx@toc@ha
3261 . ld %r11,xxx@toc@l(%r12)
3262 . addis %r2,%r2,off@ha
3263 . addi %r2,%r2,off@l
3264 . mtctr %r11
3265 . bctr
ac2df442
AM
3266
3267 In cases where the "addis" instruction would add zero, the "addis" is
3268 omitted and following instructions modified slightly in some cases.
721956f4
AM
3269*/
3270
3271enum ppc_stub_type {
3272 ppc_stub_none,
3273 ppc_stub_long_branch,
ad8e1ba5 3274 ppc_stub_long_branch_r2off,
721956f4 3275 ppc_stub_plt_branch,
ad8e1ba5 3276 ppc_stub_plt_branch_r2off,
721956f4
AM
3277 ppc_stub_plt_call
3278};
3279
3280struct ppc_stub_hash_entry {
3281
3282 /* Base hash table entry structure. */
3283 struct bfd_hash_entry root;
3284
ad8e1ba5
AM
3285 enum ppc_stub_type stub_type;
3286
721956f4
AM
3287 /* The stub section. */
3288 asection *stub_sec;
3289
3290 /* Offset within stub_sec of the beginning of this stub. */
3291 bfd_vma stub_offset;
3292
3293 /* Given the symbol's value and its section we can determine its final
3294 value when building the stubs (so the stub knows where to jump. */
3295 bfd_vma target_value;
3296 asection *target_section;
3297
721956f4
AM
3298 /* The symbol table entry, if any, that this was derived from. */
3299 struct ppc_link_hash_entry *h;
3300
411e1bfb
AM
3301 /* And the reloc addend that this was derived from. */
3302 bfd_vma addend;
3303
721956f4
AM
3304 /* Where this stub is being called from, or, in the case of combined
3305 stub sections, the first input section in the group. */
3306 asection *id_sec;
3307};
3308
3309struct ppc_branch_hash_entry {
3310
3311 /* Base hash table entry structure. */
3312 struct bfd_hash_entry root;
3313
c456f082 3314 /* Offset within branch lookup table. */
721956f4
AM
3315 unsigned int offset;
3316
3317 /* Generation marker. */
3318 unsigned int iter;
3319};
65f38f15
AM
3320
3321struct ppc_link_hash_entry
3322{
3323 struct elf_link_hash_entry elf;
3324
b3fac117
AM
3325 union {
3326 /* A pointer to the most recently used stub hash entry against this
3327 symbol. */
3328 struct ppc_stub_hash_entry *stub_cache;
3329
3330 /* A pointer to the next symbol starting with a '.' */
3331 struct ppc_link_hash_entry *next_dot_sym;
3332 } u;
721956f4 3333
65f38f15
AM
3334 /* Track dynamic relocs copied for this symbol. */
3335 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3336
721956f4 3337 /* Link between function code and descriptor symbols. */
34814b9f 3338 struct ppc_link_hash_entry *oh;
721956f4 3339
e86ce104
AM
3340 /* Flag function code and descriptor symbols. */
3341 unsigned int is_func:1;
3342 unsigned int is_func_descriptor:1;
908b32fc 3343 unsigned int fake:1;
411e1bfb 3344
c5614fa4
AM
3345 /* Whether global opd/toc sym has been adjusted or not.
3346 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3347 should be set for all globals defined in any opd/toc section. */
754021d0
AM
3348 unsigned int adjust_done:1;
3349
99877b66
AM
3350 /* Set if we twiddled this symbol to weak at some stage. */
3351 unsigned int was_undefined:1;
3352
411e1bfb 3353 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM
3354 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3355 corresponding relocs are encountered during check_relocs.
3356 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3357 indicate the corresponding GOT entry type is not needed.
3358 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3359 a TPREL one. We use a separate flag rather than setting TPREL
3360 just for convenience in distinguishing the two cases. */
3361#define TLS_GD 1 /* GD reloc. */
3362#define TLS_LD 2 /* LD reloc. */
3363#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3364#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3365#define TLS_TLS 16 /* Any TLS reloc. */
3366#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3367#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3368 char tls_mask;
65f38f15
AM
3369};
3370
3371/* ppc64 ELF linker hash table. */
3372
3373struct ppc_link_hash_table
3374{
3375 struct elf_link_hash_table elf;
3376
721956f4
AM
3377 /* The stub hash table. */
3378 struct bfd_hash_table stub_hash_table;
3379
3380 /* Another hash table for plt_branch stubs. */
3381 struct bfd_hash_table branch_hash_table;
3382
3383 /* Linker stub bfd. */
3384 bfd *stub_bfd;
3385
3386 /* Linker call-backs. */
4ce794b7
AM
3387 asection * (*add_stub_section) (const char *, asection *);
3388 void (*layout_sections_again) (void);
721956f4
AM
3389
3390 /* Array to keep track of which stub sections have been created, and
3391 information on stub grouping. */
3392 struct map_stub {
3393 /* This is the section to which stubs in the group will be attached. */
3394 asection *link_sec;
3395 /* The stub section. */
3396 asection *stub_sec;
ad8e1ba5
AM
3397 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3398 bfd_vma toc_off;
721956f4
AM
3399 } *stub_group;
3400
ad8e1ba5
AM
3401 /* Temp used when calculating TOC pointers. */
3402 bfd_vma toc_curr;
3403
8f3bab57
AM
3404 /* Highest input section id. */
3405 int top_id;
3406
734b6cf9
AM
3407 /* Highest output section index. */
3408 int top_index;
3409
b3fac117
AM
3410 /* Used when adding symbols. */
3411 struct ppc_link_hash_entry *dot_syms;
3412
734b6cf9
AM
3413 /* List of input sections for each output section. */
3414 asection **input_list;
721956f4 3415
65f38f15 3416 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3417 asection *got;
4ce794b7
AM
3418 asection *plt;
3419 asection *relplt;
3420 asection *dynbss;
3421 asection *relbss;
3422 asection *glink;
82bd7b59 3423 asection *sfpr;
4ce794b7
AM
3424 asection *brlt;
3425 asection *relbrlt;
ec338859 3426
8387904d
AM
3427 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3428 struct ppc_link_hash_entry *tls_get_addr;
3429 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3430
9b5ecbd0
AM
3431 /* Statistics. */
3432 unsigned long stub_count[ppc_stub_plt_call];
3433
ee75fd95
AM
3434 /* Number of stubs against global syms. */
3435 unsigned long stub_globals;
3436
ad8e1ba5 3437 /* Set if we should emit symbols for stubs. */
99877b66 3438 unsigned int emit_stub_syms:1;
ad8e1ba5 3439
4c52953f
AM
3440 /* Support for multiple toc sections. */
3441 unsigned int no_multi_toc:1;
3442 unsigned int multi_toc_needed:1;
3443
5d1634d7 3444 /* Set on error. */
99877b66 3445 unsigned int stub_error:1;
721956f4 3446
99877b66
AM
3447 /* Temp used by ppc64_elf_check_directives. */
3448 unsigned int twiddled_syms:1;
721956f4
AM
3449
3450 /* Incremented every time we size stubs. */
3451 unsigned int stub_iteration;
5d1634d7 3452
ec338859
AM
3453 /* Small local sym to section mapping cache. */
3454 struct sym_sec_cache sym_sec;
65f38f15
AM
3455};
3456
4c52953f
AM
3457/* Rename some of the generic section flags to better document how they
3458 are used here. */
3459#define has_toc_reloc has_gp_reloc
3460#define makes_toc_func_call need_finalize_relax
3461#define call_check_in_progress reloc_done
3462
65f38f15
AM
3463/* Get the ppc64 ELF linker hash table from a link_info structure. */
3464
3465#define ppc_hash_table(p) \
3466 ((struct ppc_link_hash_table *) ((p)->hash))
3467
721956f4
AM
3468#define ppc_stub_hash_lookup(table, string, create, copy) \
3469 ((struct ppc_stub_hash_entry *) \
3470 bfd_hash_lookup ((table), (string), (create), (copy)))
3471
3472#define ppc_branch_hash_lookup(table, string, create, copy) \
3473 ((struct ppc_branch_hash_entry *) \
3474 bfd_hash_lookup ((table), (string), (create), (copy)))
3475
3476/* Create an entry in the stub hash table. */
3477
3478static struct bfd_hash_entry *
4ce794b7
AM
3479stub_hash_newfunc (struct bfd_hash_entry *entry,
3480 struct bfd_hash_table *table,
3481 const char *string)
721956f4
AM
3482{
3483 /* Allocate the structure if it has not already been allocated by a
3484 subclass. */
3485 if (entry == NULL)
3486 {
3487 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3488 if (entry == NULL)
3489 return entry;
3490 }
3491
3492 /* Call the allocation method of the superclass. */
3493 entry = bfd_hash_newfunc (entry, table, string);
3494 if (entry != NULL)
3495 {
3496 struct ppc_stub_hash_entry *eh;
3497
3498 /* Initialize the local fields. */
3499 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3500 eh->stub_type = ppc_stub_none;
721956f4
AM
3501 eh->stub_sec = NULL;
3502 eh->stub_offset = 0;
3503 eh->target_value = 0;
3504 eh->target_section = NULL;
721956f4
AM
3505 eh->h = NULL;
3506 eh->id_sec = NULL;
3507 }
3508
3509 return entry;
3510}
3511
3512/* Create an entry in the branch hash table. */
3513
3514static struct bfd_hash_entry *
4ce794b7
AM
3515branch_hash_newfunc (struct bfd_hash_entry *entry,
3516 struct bfd_hash_table *table,
3517 const char *string)
721956f4
AM
3518{
3519 /* Allocate the structure if it has not already been allocated by a
3520 subclass. */
3521 if (entry == NULL)
3522 {
3523 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3524 if (entry == NULL)
3525 return entry;
3526 }
3527
3528 /* Call the allocation method of the superclass. */
3529 entry = bfd_hash_newfunc (entry, table, string);
3530 if (entry != NULL)
3531 {
3532 struct ppc_branch_hash_entry *eh;
3533
3534 /* Initialize the local fields. */
3535 eh = (struct ppc_branch_hash_entry *) entry;
3536 eh->offset = 0;
3537 eh->iter = 0;
3538 }
3539
3540 return entry;
3541}
3542
65f38f15
AM
3543/* Create an entry in a ppc64 ELF linker hash table. */
3544
3545static struct bfd_hash_entry *
4ce794b7
AM
3546link_hash_newfunc (struct bfd_hash_entry *entry,
3547 struct bfd_hash_table *table,
3548 const char *string)
65f38f15
AM
3549{
3550 /* Allocate the structure if it has not already been allocated by a
3551 subclass. */
3552 if (entry == NULL)
3553 {
3554 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3555 if (entry == NULL)
3556 return entry;
3557 }
3558
3559 /* Call the allocation method of the superclass. */
3560 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3561 if (entry != NULL)
3562 {
3563 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3564
b3fac117 3565 memset (&eh->u.stub_cache, 0,
908b32fc 3566 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM
3567 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3568
3569 /* When making function calls, old ABI code references function entry
3570 points (dot symbols), while new ABI code references the function
3571 descriptor symbol. We need to make any combination of reference and
3572 definition work together, without breaking archive linking.
3573
3574 For a defined function "foo" and an undefined call to "bar":
3575 An old object defines "foo" and ".foo", references ".bar" (possibly
3576 "bar" too).
3577 A new object defines "foo" and references "bar".
3578
3579 A new object thus has no problem with its undefined symbols being
3580 satisfied by definitions in an old object. On the other hand, the
3581 old object won't have ".bar" satisfied by a new object.
3582
3583 Keep a list of newly added dot-symbols. */
3584
3585 if (string[0] == '.')
3586 {
3587 struct ppc_link_hash_table *htab;
3588
3589 htab = (struct ppc_link_hash_table *) table;
3590 eh->u.next_dot_sym = htab->dot_syms;
3591 htab->dot_syms = eh;
3592 }
65f38f15
AM
3593 }
3594
3595 return entry;
3596}
3597
3598/* Create a ppc64 ELF linker hash table. */
3599
3600static struct bfd_link_hash_table *
4ce794b7 3601ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM
3602{
3603 struct ppc_link_hash_table *htab;
3604 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3605
4ce794b7 3606 htab = bfd_zmalloc (amt);
65f38f15
AM
3607 if (htab == NULL)
3608 return NULL;
3609
66eb6687
AM
3610 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3611 sizeof (struct ppc_link_hash_entry)))
65f38f15 3612 {
e2d34d7d 3613 free (htab);
65f38f15
AM
3614 return NULL;
3615 }
3616
721956f4 3617 /* Init the stub hash table too. */
66eb6687
AM
3618 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3619 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM
3620 return NULL;
3621
3622 /* And the branch hash table. */
66eb6687
AM
3623 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3624 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM
3625 return NULL;
3626
3254fd24
AM
3627 /* Initializing two fields of the union is just cosmetic. We really
3628 only care about glist, but when compiled on a 32-bit host the
3629 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3630 debugger inspection of these fields look nicer. */
a6aa5195
AM
3631 htab->elf.init_got_refcount.refcount = 0;
3632 htab->elf.init_got_refcount.glist = NULL;
3633 htab->elf.init_plt_refcount.refcount = 0;
3634 htab->elf.init_plt_refcount.glist = NULL;
3635 htab->elf.init_got_offset.offset = 0;
3636 htab->elf.init_got_offset.glist = NULL;
3637 htab->elf.init_plt_offset.offset = 0;
3638 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3639
65f38f15
AM
3640 return &htab->elf.root;
3641}
3642
721956f4
AM
3643/* Free the derived linker hash table. */
3644
3645static void
4ce794b7 3646ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM
3647{
3648 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3649
3650 bfd_hash_table_free (&ret->stub_hash_table);
3651 bfd_hash_table_free (&ret->branch_hash_table);
3652 _bfd_generic_link_hash_table_free (hash);
3653}
3654
e717da7e
AM
3655/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3656
3657void
3658ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3659{
3660 struct ppc_link_hash_table *htab;
3661
3662 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3663
3664/* Always hook our dynamic sections into the first bfd, which is the
3665 linker created stub bfd. This ensures that the GOT header is at
3666 the start of the output TOC section. */
3667 htab = ppc_hash_table (info);
3668 htab->stub_bfd = abfd;
3669 htab->elf.dynobj = abfd;
3670}
3671
721956f4
AM
3672/* Build a name for an entry in the stub hash table. */
3673
3674static char *
4ce794b7
AM
3675ppc_stub_name (const asection *input_section,
3676 const asection *sym_sec,
3677 const struct ppc_link_hash_entry *h,
3678 const Elf_Internal_Rela *rel)
721956f4
AM
3679{
3680 char *stub_name;
3681 bfd_size_type len;
3682
3683 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3684 offsets from a sym as a branch target? In fact, we could
3685 probably assume the addend is always zero. */
3686 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3687
3688 if (h)
3689 {
3690 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3691 stub_name = bfd_malloc (len);
46de2a7c
AM
3692 if (stub_name == NULL)
3693 return stub_name;
3694
3695 sprintf (stub_name, "%08x.%s+%x",
3696 input_section->id & 0xffffffff,
3697 h->elf.root.root.string,
3698 (int) rel->r_addend & 0xffffffff);
721956f4
AM
3699 }
3700 else
3701 {
ad8e1ba5 3702 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3703 stub_name = bfd_malloc (len);
46de2a7c
AM
3704 if (stub_name == NULL)
3705 return stub_name;
3706
3707 sprintf (stub_name, "%08x.%x:%x+%x",
3708 input_section->id & 0xffffffff,
3709 sym_sec->id & 0xffffffff,
3710 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3711 (int) rel->r_addend & 0xffffffff);
721956f4 3712 }
ee75fd95
AM
3713 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3714 stub_name[len - 2] = 0;
721956f4
AM
3715 return stub_name;
3716}
3717
3718/* Look up an entry in the stub hash. Stub entries are cached because
3719 creating the stub name takes a bit of time. */
3720
3721static struct ppc_stub_hash_entry *
4ce794b7
AM
3722ppc_get_stub_entry (const asection *input_section,
3723 const asection *sym_sec,
039b3fef 3724 struct ppc_link_hash_entry *h,
4ce794b7
AM
3725 const Elf_Internal_Rela *rel,
3726 struct ppc_link_hash_table *htab)
721956f4
AM
3727{
3728 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM
3729 const asection *id_sec;
3730
3731 /* If this input section is part of a group of sections sharing one
3732 stub section, then use the id of the first section in the group.
3733 Stub names need to include a section id, as there may well be
3734 more than one stub used to reach say, printf, and we need to
3735 distinguish between them. */
3736 id_sec = htab->stub_group[input_section->id].link_sec;
3737
b3fac117
AM
3738 if (h != NULL && h->u.stub_cache != NULL
3739 && h->u.stub_cache->h == h
3740 && h->u.stub_cache->id_sec == id_sec)
721956f4 3741 {
b3fac117 3742 stub_entry = h->u.stub_cache;
721956f4
AM
3743 }
3744 else
3745 {
3746 char *stub_name;
3747
3748 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3749 if (stub_name == NULL)
3750 return NULL;
3751
3752 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3753 stub_name, FALSE, FALSE);
721956f4 3754 if (h != NULL)
b3fac117 3755 h->u.stub_cache = stub_entry;
721956f4
AM
3756
3757 free (stub_name);
3758 }
3759
3760 return stub_entry;
3761}
3762
3763/* Add a new stub entry to the stub hash. Not all fields of the new
3764 stub entry are initialised. */
3765
3766static struct ppc_stub_hash_entry *
4ce794b7
AM
3767ppc_add_stub (const char *stub_name,
3768 asection *section,
3769 struct ppc_link_hash_table *htab)
721956f4
AM
3770{
3771 asection *link_sec;
3772 asection *stub_sec;
3773 struct ppc_stub_hash_entry *stub_entry;
3774
3775 link_sec = htab->stub_group[section->id].link_sec;
3776 stub_sec = htab->stub_group[section->id].stub_sec;
3777 if (stub_sec == NULL)
3778 {
3779 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3780 if (stub_sec == NULL)
3781 {
d4c88bbb 3782 size_t namelen;
721956f4
AM
3783 bfd_size_type len;
3784 char *s_name;
3785
d4c88bbb
AM
3786 namelen = strlen (link_sec->name);
3787 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM
3788 s_name = bfd_alloc (htab->stub_bfd, len);
3789 if (s_name == NULL)
3790 return NULL;
3791
d4c88bbb
AM
3792 memcpy (s_name, link_sec->name, namelen);
3793 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM
3794 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3795 if (stub_sec == NULL)
3796 return NULL;
3797 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3798 }
3799 htab->stub_group[section->id].stub_sec = stub_sec;
3800 }
3801
3802 /* Enter this entry into the linker stub hash table. */
3803 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3804 TRUE, FALSE);
721956f4
AM
3805 if (stub_entry == NULL)
3806 {
d003868e
AM
3807 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3808 section->owner, stub_name);
721956f4
AM
3809 return NULL;
3810 }
3811
3812 stub_entry->stub_sec = stub_sec;
3813 stub_entry->stub_offset = 0;
3814 stub_entry->id_sec = link_sec;
3815 return stub_entry;
3816}
3817
82bd7b59
AM
3818/* Create sections for linker generated code. */
3819
b34976b6 3820static bfd_boolean
4ce794b7 3821create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM
3822{
3823 struct ppc_link_hash_table *htab;
3824 flagword flags;
3825
3826 htab = ppc_hash_table (info);
3827
3828 /* Create .sfpr for code to save and restore fp regs. */
3829 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3830 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L
3831 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3832 flags);
82bd7b59 3833 if (htab->sfpr == NULL
82bd7b59 3834 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3835 return FALSE;
82bd7b59 3836
721956f4 3837 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L
3838 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3839 flags);
4ce794b7 3840 if (htab->glink == NULL
ee4bf8d2 3841 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 3842 return FALSE;
82bd7b59 3843
c456f082 3844 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM
3845 flags = (SEC_ALLOC | SEC_LOAD
3846 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3847 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3848 flags);
4ce794b7 3849 if (htab->brlt == NULL
4ce794b7 3850 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3851 return FALSE;
721956f4 3852
e4e0193e 3853 if (!info->shared)
c456f082
AM
3854 return TRUE;
3855
e4e0193e
AM
3856 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3857 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3858 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3859 ".rela.branch_lt",
3860 flags);
c456f082
AM
3861 if (!htab->relbrlt
3862 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3863 return FALSE;
3864
b34976b6 3865 return TRUE;
82bd7b59
AM
3866}
3867
e717da7e
AM
3868/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3869 not already done. */
65f38f15 3870
b34976b6 3871static bfd_boolean
e717da7e 3872create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3873{
e717da7e
AM
3874 asection *got, *relgot;
3875 flagword flags;
3876 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3877
0c8d6e5c 3878 if (!is_ppc64_elf (abfd))
0ffa91dd
NC
3879 return FALSE;
3880
4ce794b7 3881 if (!htab->got)
e717da7e
AM
3882 {
3883 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3884 return FALSE;
3885
3886 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3887 if (!htab->got)
3888 abort ();
3889 }
3890
3891 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3892 | SEC_LINKER_CREATED);
3893
c456f082 3894 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3895 if (!got
e717da7e
AM
3896 || !bfd_set_section_alignment (abfd, got, 3))
3897 return FALSE;
65f38f15 3898
c456f082
AM
3899 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3900 flags | SEC_READONLY);
e717da7e 3901 if (!relgot
e717da7e 3902 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3903 return FALSE;
e717da7e
AM
3904
3905 ppc64_elf_tdata (abfd)->got = got;
3906 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3907 return TRUE;
65f38f15 3908}
5bd4f169 3909
82bd7b59 3910/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3911
b34976b6 3912static bfd_boolean
4ce794b7 3913ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3914{
65f38f15 3915 struct ppc_link_hash_table *htab;
5bd4f169 3916
65f38f15 3917 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3918 return FALSE;
65f38f15 3919
e717da7e
AM
3920 htab = ppc_hash_table (info);
3921 if (!htab->got)
3922 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM
3923 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3924 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3925 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3926 if (!info->shared)
4ce794b7 3927 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3928
e717da7e 3929 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3930 || (!info->shared && !htab->relbss))
65f38f15
AM
3931 abort ();
3932
b34976b6 3933 return TRUE;
5bd4f169
AM
3934}
3935
40d16e0b
AM
3936/* Merge PLT info on FROM with that on TO. */
3937
3938static void
3939move_plt_plist (struct ppc_link_hash_entry *from,
3940 struct ppc_link_hash_entry *to)
3941{
3942 if (from->elf.plt.plist != NULL)
3943 {
3944 if (to->elf.plt.plist != NULL)
3945 {
3946 struct plt_entry **entp;
3947 struct plt_entry *ent;
3948
3949 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3950 {
3951 struct plt_entry *dent;
3952
3953 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3954 if (dent->addend == ent->addend)
3955 {
3956 dent->plt.refcount += ent->plt.refcount;
3957 *entp = ent->next;
3958 break;
3959 }
3960 if (dent == NULL)
3961 entp = &ent->next;
3962 }
3963 *entp = to->elf.plt.plist;
3964 }
3965
3966 to->elf.plt.plist = from->elf.plt.plist;
3967 from->elf.plt.plist = NULL;
3968 }
3969}
3970
65f38f15
AM
3971/* Copy the extra info we tack onto an elf_link_hash_entry. */
3972
3973static void
fcfa13d2
AM
3974ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3975 struct elf_link_hash_entry *dir,
3976 struct elf_link_hash_entry *ind)
65f38f15
AM
3977{
3978 struct ppc_link_hash_entry *edir, *eind;
3979
3980 edir = (struct ppc_link_hash_entry *) dir;
3981 eind = (struct ppc_link_hash_entry *) ind;
3982
411e1bfb 3983 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3984 if (eind->dyn_relocs != NULL)
65f38f15 3985 {
bbd7ec4a
AM
3986 if (edir->dyn_relocs != NULL)
3987 {
3988 struct ppc_dyn_relocs **pp;
3989 struct ppc_dyn_relocs *p;
3990
fcfa13d2 3991 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
3992 list. Merge any entries against the same section. */
3993 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3994 {
3995 struct ppc_dyn_relocs *q;
3996
3997 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3998 if (q->sec == p->sec)
3999 {
4000 q->pc_count += p->pc_count;
4001 q->count += p->count;
4002 *pp = p->next;
4003 break;
4004 }
4005 if (q == NULL)
4006 pp = &p->next;
4007 }
4008 *pp = edir->dyn_relocs;
4009 }
4010
65f38f15
AM
4011 edir->dyn_relocs = eind->dyn_relocs;
4012 eind->dyn_relocs = NULL;
4013 }
65f38f15 4014
6349e628
AM
4015 edir->is_func |= eind->is_func;
4016 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4017 edir->tls_mask |= eind->tls_mask;
6349e628 4018
81848ca0 4019 /* If called to transfer flags for a weakdef during processing
f5385ebf 4020 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4021 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM
4022 if (!(ELIMINATE_COPY_RELOCS
4023 && eind->elf.root.type != bfd_link_hash_indirect
4024 && edir->elf.dynamic_adjusted))
4025 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4026
f5385ebf
AM
4027 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4028 edir->elf.ref_regular |= eind->elf.ref_regular;
4029 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4030 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM
4031
4032 /* If we were called to copy over info for a weak sym, that's all. */
4033 if (eind->elf.root.type != bfd_link_hash_indirect)
4034 return;
4035
81848ca0
AM
4036 /* Copy over got entries that we may have already seen to the
4037 symbol which just became indirect. */
411e1bfb
AM
4038 if (eind->elf.got.glist != NULL)
4039 {
4040 if (edir->elf.got.glist != NULL)
4041 {
4042 struct got_entry **entp;
4043 struct got_entry *ent;
4044
4045 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4046 {
4047 struct got_entry *dent;
4048
4049 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4050 if (dent->addend == ent->addend
e717da7e 4051 && dent->owner == ent->owner
411e1bfb
AM
4052 && dent->tls_type == ent->tls_type)
4053 {
4054 dent->got.refcount += ent->got.refcount;
4055 *entp = ent->next;
4056 break;
4057 }
4058 if (dent == NULL)
4059 entp = &ent->next;
4060 }
4061 *entp = edir->elf.got.glist;
4062 }
4063
4064 edir->elf.got.glist = eind->elf.got.glist;
4065 eind->elf.got.glist = NULL;
4066 }
4067
4068 /* And plt entries. */
40d16e0b 4069 move_plt_plist (eind, edir);
411e1bfb 4070
fcfa13d2 4071 if (eind->elf.dynindx != -1)
411e1bfb 4072 {
fcfa13d2
AM
4073 if (edir->elf.dynindx != -1)
4074 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4075 edir->elf.dynstr_index);
411e1bfb
AM
4076 edir->elf.dynindx = eind->elf.dynindx;
4077 edir->elf.dynstr_index = eind->elf.dynstr_index;
4078 eind->elf.dynindx = -1;
4079 eind->elf.dynstr_index = 0;
4080 }
411e1bfb
AM
4081}
4082
8387904d
AM
4083/* Find the function descriptor hash entry from the given function code
4084 hash entry FH. Link the entries via their OH fields. */
4085
4086static struct ppc_link_hash_entry *
4087get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4088{
4089 struct ppc_link_hash_entry *fdh = fh->oh;
4090
4091 if (fdh == NULL)
4092 {
4093 const char *fd_name = fh->elf.root.root.string + 1;
4094
4095 fdh = (struct ppc_link_hash_entry *)
4096 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4097 if (fdh != NULL)
4098 {
4099 fdh->is_func_descriptor = 1;
4100 fdh->oh = fh;
4101 fh->is_func = 1;
4102 fh->oh = fdh;
4103 }
4104 }
4105
4106 return fdh;
4107}
4108
bb700d78
AM
4109/* Make a fake function descriptor sym for the code sym FH. */
4110
4111static struct ppc_link_hash_entry *
4112make_fdh (struct bfd_link_info *info,
908b32fc 4113 struct ppc_link_hash_entry *fh)
bb700d78
AM
4114{
4115 bfd *abfd;
4116 asymbol *newsym;
4117 struct bfd_link_hash_entry *bh;
4118 struct ppc_link_hash_entry *fdh;
4119
4120 abfd = fh->elf.root.u.undef.abfd;
4121 newsym = bfd_make_empty_symbol (abfd);
4122 newsym->name = fh->elf.root.root.string + 1;
4123 newsym->section = bfd_und_section_ptr;
4124 newsym->value = 0;
908b32fc 4125 newsym->flags = BSF_WEAK;
bb700d78
AM
4126
4127 bh = NULL;
4128 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4129 newsym->flags, newsym->section,
4130 newsym->value, NULL, FALSE, FALSE,
4131 &bh))
4132 return NULL;
4133
4134 fdh = (struct ppc_link_hash_entry *) bh;
4135 fdh->elf.non_elf = 0;
908b32fc
AM
4136 fdh->fake = 1;
4137 fdh->is_func_descriptor = 1;
4138 fdh->oh = fh;
4139 fh->is_func = 1;
4140 fh->oh = fdh;
bb700d78
AM
4141 return fdh;
4142}
4143
8387904d
AM
4144/* Fix function descriptor symbols defined in .opd sections to be
4145 function type. */
555cd476
AM
4146
4147static bfd_boolean
b3fac117 4148ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM
4149 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4150 Elf_Internal_Sym *isym,
b3fac117 4151 const char **name ATTRIBUTE_UNUSED,
555cd476
AM
4152 flagword *flags ATTRIBUTE_UNUSED,
4153 asection **sec,
4154 bfd_vma *value ATTRIBUTE_UNUSED)
4155{
8843416a
AM
4156 if (*sec != NULL
4157 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4158 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4159
555cd476
AM
4160 return TRUE;
4161}
4162
8387904d 4163/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM
4164 inclusion of a new ABI object archive that defines "bar".
4165 NAME is a symbol defined in an archive. Return a symbol in the hash
4166 table that might be satisfied by the archive symbols. */
8387904d
AM
4167
4168static struct elf_link_hash_entry *
4169ppc64_elf_archive_symbol_lookup (bfd *abfd,
4170 struct bfd_link_info *info,
4171 const char *name)
4172{
4173 struct elf_link_hash_entry *h;
4174 char *dot_name;
4175 size_t len;
4176
4177 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM
4178 if (h != NULL
4179 /* Don't return this sym if it is a fake function descriptor
4180 created by add_symbol_adjust. */
4181 && !(h->root.type == bfd_link_hash_undefweak
4182 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM
4183 return h;
4184
4185 if (name[0] == '.')
4186 return h;
4187
4188 len = strlen (name);
4189 dot_name = bfd_alloc (abfd, len + 2);
4190 if (dot_name == NULL)
4191 return (struct elf_link_hash_entry *) 0 - 1;
4192 dot_name[0] = '.';
4193 memcpy (dot_name + 1, name, len + 1);
4194 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4195 bfd_release (abfd, dot_name);
4196 return h;
4197}
4198
4199/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM
4200 new ABI object defines "bar". Well, at least, undefined dot symbols
4201 are made weak. This stops later archive searches from including an
4202 object if we already have a function descriptor definition. It also
35b0ce59
AM
4203 prevents the linker complaining about undefined symbols.
4204 We also check and correct mismatched symbol visibility here. The
4205 most restrictive visibility of the function descriptor and the
4206 function entry symbol is used. */
8387904d
AM
4207
4208static bfd_boolean
b3fac117 4209add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4210{
8387904d
AM
4211 struct ppc_link_hash_table *htab;
4212 struct ppc_link_hash_entry *fdh;
4213
b3fac117 4214 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM
4215 return TRUE;
4216
b3fac117
AM
4217 if (eh->elf.root.type == bfd_link_hash_warning)
4218 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4219
b3fac117
AM
4220 if (eh->elf.root.root.string[0] != '.')
4221 abort ();
8387904d 4222
b3fac117 4223 htab = ppc_hash_table (info);
99877b66 4224 fdh = get_fdh (eh, htab);
bb700d78 4225 if (fdh == NULL
b3fac117 4226 && !info->relocatable
bb700d78
AM
4227 && (eh->elf.root.type == bfd_link_hash_undefined
4228 || eh->elf.root.type == bfd_link_hash_undefweak)
4229 && eh->elf.ref_regular)
4230 {
4231 /* Make an undefweak function descriptor sym, which is enough to
4232 pull in an --as-needed shared lib, but won't cause link
4233 errors. Archives are handled elsewhere. */
b3fac117 4234 fdh = make_fdh (info, eh);
bb700d78 4235 if (fdh == NULL)
b3fac117 4236 return FALSE;
bb700d78
AM
4237 else
4238 fdh->elf.ref_regular = 1;
4239 }
e87d886e 4240 else if (fdh != NULL)
8387904d 4241 {
35b0ce59
AM
4242 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4243 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4244 if (entry_vis < descr_vis)
4245 fdh->elf.other += entry_vis - descr_vis;
4246 else if (entry_vis > descr_vis)
4247 eh->elf.other += descr_vis - entry_vis;
4248
e87d886e
AM
4249 if ((fdh->elf.root.type == bfd_link_hash_defined
4250 || fdh->elf.root.type == bfd_link_hash_defweak)
4251 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM
4252 {
4253 eh->elf.root.type = bfd_link_hash_undefweak;
4254 eh->was_undefined = 1;
4255 htab->twiddled_syms = 1;
4256 }
8387904d 4257 }
99877b66 4258
8387904d
AM
4259 return TRUE;
4260}
4261
b3fac117
AM
4262/* Process list of dot-symbols we made in link_hash_newfunc. */
4263
8387904d 4264static bfd_boolean
b3fac117 4265ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4266{
99877b66 4267 struct ppc_link_hash_table *htab;
b3fac117 4268 struct ppc_link_hash_entry **p, *eh;
433817dd 4269
99877b66 4270 htab = ppc_hash_table (info);
0c8d6e5c 4271 if (!is_ppc64_elf (info->output_bfd))
35b0ce59
AM
4272 return TRUE;
4273
0c8d6e5c 4274 if (is_ppc64_elf (ibfd))
b3fac117
AM
4275 {
4276 p = &htab->dot_syms;
4277 while ((eh = *p) != NULL)
4278 {
4279 *p = NULL;
4280 if (!add_symbol_adjust (eh, info))
4281 return FALSE;
4282 p = &eh->u.next_dot_sym;
4283 }
4284 }
4285
4286 /* Clear the list for non-ppc64 input files. */
4287 p = &htab->dot_syms;
4288 while ((eh = *p) != NULL)
4289 {
4290 *p = NULL;
4291 p = &eh->u.next_dot_sym;
4292 }
99877b66
AM
4293
4294 /* We need to fix the undefs list for any syms we have twiddled to
4295 undef_weak. */
4296 if (htab->twiddled_syms)
4297 {
77cfaee6 4298 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM
4299 htab->twiddled_syms = 0;
4300 }
b3fac117 4301 return TRUE;
8387904d
AM
4302}
4303
97fed1c9
JJ
4304/* Undo hash table changes when an --as-needed input file is determined
4305 not to be needed. */
4306
4307static bfd_boolean
4308ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4309 struct bfd_link_info *info)
4310{
4311 ppc_hash_table (info)->dot_syms = NULL;
4312 return TRUE;
4313}
4314
411e1bfb 4315static bfd_boolean
4ce794b7
AM
4316update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4317 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM
4318{
4319 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4320 char *local_got_tls_masks;
411e1bfb
AM
4321
4322 if (local_got_ents == NULL)
4323 {
4324 bfd_size_type size = symtab_hdr->sh_info;
4325
e7b938ca 4326 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4327 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM
4328 if (local_got_ents == NULL)
4329 return FALSE;
4330 elf_local_got_ents (abfd) = local_got_ents;
4331 }
4332
4333 if ((tls_type & TLS_EXPLICIT) == 0)
4334 {
4335 struct got_entry *ent;
4336
4337 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM
4338 if (ent->addend == r_addend
4339 && ent->owner == abfd
4340 && ent->tls_type == tls_type)
411e1bfb
AM
4341 break;
4342 if (ent == NULL)
4343 {
4344 bfd_size_type amt = sizeof (*ent);
4ce794b7 4345 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4346 if (ent == NULL)
4347 return FALSE;
4348 ent->next = local_got_ents[r_symndx];
4349 ent->addend = r_addend;
e717da7e 4350 ent->owner = abfd;
411e1bfb
AM
4351 ent->tls_type = tls_type;
4352 ent->got.refcount = 0;
4353 local_got_ents[r_symndx] = ent;
4354 }
4355 ent->got.refcount += 1;
4356 }
4357
e7b938ca
AM
4358 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4359 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4360 return TRUE;
65f38f15
AM
4361}
4362
411e1bfb 4363static bfd_boolean
4ce794b7 4364update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4365{
411e1bfb 4366 struct plt_entry *ent;
1e2f5b6e 4367
411e1bfb
AM
4368 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4369 if (ent->addend == addend)
4370 break;
4371 if (ent == NULL)
1e2f5b6e 4372 {
411e1bfb 4373 bfd_size_type amt = sizeof (*ent);
4ce794b7 4374 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4375 if (ent == NULL)
4376 return FALSE;
4377 ent->next = eh->elf.plt.plist;
4378 ent->addend = addend;
4379 ent->plt.refcount = 0;
4380 eh->elf.plt.plist = ent;
1e2f5b6e 4381 }
411e1bfb 4382 ent->plt.refcount += 1;
f5385ebf 4383 eh->elf.needs_plt = 1;
93f3fa99
AM
4384 if (eh->elf.root.root.string[0] == '.'
4385 && eh->elf.root.root.string[1] != '\0')
4386 eh->is_func = 1;
b34976b6 4387 return TRUE;
1e2f5b6e
AM
4388}
4389
5bd4f169 4390/* Look through the relocs for a section during the first phase, and
65f38f15 4391 calculate needed space in the global offset table, procedure
5d1634d7 4392 linkage table, and dynamic reloc sections. */
5bd4f169 4393
b34976b6 4394static bfd_boolean
4ce794b7
AM
4395ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4396 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4397{
65f38f15 4398 struct ppc_link_hash_table *htab;
5bd4f169
AM
4399 Elf_Internal_Shdr *symtab_hdr;
4400 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4401 const Elf_Internal_Rela *rel;
4402 const Elf_Internal_Rela *rel_end;
5bd4f169 4403 asection *sreloc;
1e2f5b6e 4404 asection **opd_sym_map;
5bd4f169 4405
1049f94e 4406 if (info->relocatable)
b34976b6 4407 return TRUE;
5bd4f169 4408
680a3378
AM
4409 /* Don't do anything special with non-loaded, non-alloced sections.
4410 In particular, any relocs in such sections should not affect GOT
4411 and PLT reference counting (ie. we don't allow them to create GOT
4412 or PLT entries), there's no possibility or desire to optimize TLS
4413 relocs, and there's not much point in propagating relocs to shared
4414 libs that the dynamic linker won't relocate. */
4415 if ((sec->flags & SEC_ALLOC) == 0)
4416 return TRUE;
4417
0c8d6e5c 4418 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4419
65f38f15 4420 htab = ppc_hash_table (info);
0ffa91dd 4421 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169
AM
4422
4423 sym_hashes = elf_sym_hashes (abfd);
4424 sym_hashes_end = (sym_hashes
1e2f5b6e
AM
4425 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4426 - symtab_hdr->sh_info);
5bd4f169
AM
4427
4428 sreloc = NULL;
1e2f5b6e
AM
4429 opd_sym_map = NULL;
4430 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4431 {
4432 /* Garbage collection needs some extra help with .opd sections.
4433 We don't want to necessarily keep everything referenced by
4434 relocs in .opd, as that would keep all functions. Instead,
4435 if we reference an .opd symbol (a function descriptor), we
4436 want to keep the function code symbol's section. This is
4437 easy for global symbols, but for local syms we need to keep
74f0fb50 4438 information about the associated function section. */
1e2f5b6e
AM
4439 bfd_size_type amt;
4440
74f0fb50 4441 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4442 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4443 if (opd_sym_map == NULL)
b34976b6 4444 return FALSE;
74f0fb50 4445 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM
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:
951fd09b 4481 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
4482 goto dogottls;
4483
4484 case R_PPC64_GOT_TLSGD16:
4485 case R_PPC64_GOT_TLSGD16_LO:
4486 case R_PPC64_GOT_TLSGD16_HI:
4487 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4488 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
4489 goto dogottls;
4490
4491 case R_PPC64_GOT_TPREL16_DS:
4492 case R_PPC64_GOT_TPREL16_LO_DS:
4493 case R_PPC64_GOT_TPREL16_HI:
4494 case R_PPC64_GOT_TPREL16_HA:
4495 if (info->shared)
4496 info->flags |= DF_STATIC_TLS;
4497 tls_type = TLS_TLS | TLS_TPREL;
4498 goto dogottls;
4499
4500 case R_PPC64_GOT_DTPREL16_DS:
4501 case R_PPC64_GOT_DTPREL16_LO_DS:
4502 case R_PPC64_GOT_DTPREL16_HI:
4503 case R_PPC64_GOT_DTPREL16_HA:
4504 tls_type = TLS_TLS | TLS_DTPREL;
4505 dogottls:
4506 sec->has_tls_reloc = 1;
4507 /* Fall thru */
4508
5bd4f169 4509 case R_PPC64_GOT16:
5bd4f169 4510 case R_PPC64_GOT16_DS:
65f38f15
AM
4511 case R_PPC64_GOT16_HA:
4512 case R_PPC64_GOT16_HI:
4513 case R_PPC64_GOT16_LO:
5bd4f169 4514 case R_PPC64_GOT16_LO_DS:
65f38f15 4515 /* This symbol requires a global offset table entry. */
4c52953f 4516 sec->has_toc_reloc = 1;
e717da7e
AM
4517 if (ppc64_elf_tdata (abfd)->got == NULL
4518 && !create_got_section (abfd, info))
b34976b6 4519 return FALSE;
5bd4f169
AM
4520
4521 if (h != NULL)
4522 {
411e1bfb
AM
4523 struct ppc_link_hash_entry *eh;
4524 struct got_entry *ent;
65f38f15 4525
411e1bfb
AM
4526 eh = (struct ppc_link_hash_entry *) h;
4527 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4528 if (ent->addend == rel->r_addend
e717da7e 4529 && ent->owner == abfd
411e1bfb
AM
4530 && ent->tls_type == tls_type)
4531 break;
4532 if (ent == NULL)
5bd4f169 4533 {
411e1bfb 4534 bfd_size_type amt = sizeof (*ent);
4ce794b7 4535 ent = bfd_alloc (abfd, amt);
411e1bfb 4536 if (ent == NULL)
b34976b6 4537 return FALSE;
411e1bfb
AM
4538 ent->next = eh->elf.got.glist;
4539 ent->addend = rel->r_addend;
e717da7e 4540 ent->owner = abfd;
411e1bfb
AM
4541 ent->tls_type = tls_type;
4542 ent->got.refcount = 0;
4543 eh->elf.got.glist = ent;
5bd4f169 4544 }
411e1bfb 4545 ent->got.refcount += 1;
e7b938ca 4546 eh->tls_mask |= tls_type;
5bd4f169 4547 }
411e1bfb
AM
4548 else
4549 /* This is a global offset table entry for a local symbol. */
4550 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4551 rel->r_addend, tls_type))
4552 return FALSE;
5bd4f169
AM
4553 break;
4554
5bd4f169 4555 case R_PPC64_PLT16_HA:
65f38f15
AM
4556 case R_PPC64_PLT16_HI:
4557 case R_PPC64_PLT16_LO:
4558 case R_PPC64_PLT32:
4559 case R_PPC64_PLT64:
5bd4f169 4560 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM
4561 actually build the entry in adjust_dynamic_symbol,
4562 because this might be a case of linking PIC code without
4563 linking in any dynamic objects, in which case we don't
4564 need to generate a procedure linkage table after all. */
5bd4f169
AM
4565 if (h == NULL)
4566 {
4567 /* It does not make sense to have a procedure linkage
3fad3c7c 4568 table entry for a local symbol. */
5bd4f169 4569 bfd_set_error (bfd_error_bad_value);
b34976b6 4570 return FALSE;
5bd4f169 4571 }
411e1bfb
AM
4572 else
4573 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4574 rel->r_addend))
4575 return FALSE;
5bd4f169
AM
4576 break;
4577
4578 /* The following relocations don't need to propagate the
4579 relocation if linking a shared object since they are
4580 section relative. */
4581 case R_PPC64_SECTOFF:
4582 case R_PPC64_SECTOFF_LO:
4583 case R_PPC64_SECTOFF_HI:
4584 case R_PPC64_SECTOFF_HA:
4585 case R_PPC64_SECTOFF_DS:
4586 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM
4587 case R_PPC64_DTPREL16:
4588 case R_PPC64_DTPREL16_LO:
4589 case R_PPC64_DTPREL16_HI:
4590 case R_PPC64_DTPREL16_HA:
4591 case R_PPC64_DTPREL16_DS:
4592 case R_PPC64_DTPREL16_LO_DS:
4593 case R_PPC64_DTPREL16_HIGHER:
4594 case R_PPC64_DTPREL16_HIGHERA:
4595 case R_PPC64_DTPREL16_HIGHEST:
4596 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM
4597 break;
4598
ad8e1ba5
AM
4599 /* Nor do these. */
4600 case R_PPC64_TOC16:
4601 case R_PPC64_TOC16_LO:
4602 case R_PPC64_TOC16_HI:
4603 case R_PPC64_TOC16_HA:
4604 case R_PPC64_TOC16_DS:
4605 case R_PPC64_TOC16_LO_DS:
4c52953f 4606 sec->has_toc_reloc = 1;
ad8e1ba5
AM
4607 break;
4608
5bd4f169
AM
4609 /* This relocation describes the C++ object vtable hierarchy.
4610 Reconstruct it for later use during GC. */
4611 case R_PPC64_GNU_VTINHERIT:
c152c796 4612 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4613 return FALSE;
5bd4f169
AM
4614 break;
4615
4616 /* This relocation describes which C++ vtable entries are actually
4617 used. Record for later use during GC. */
4618 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB
4619 BFD_ASSERT (h != NULL);
4620 if (h != NULL
4621 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4622 return FALSE;
5bd4f169
AM
4623 break;
4624
721956f4
AM
4625 case R_PPC64_REL14:
4626 case R_PPC64_REL14_BRTAKEN:
4627 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM
4628 {
4629 asection *dest = NULL;
4630
4631 /* Heuristic: If jumping outside our section, chances are
4632 we are going to need a stub. */
4633 if (h != NULL)
4634 {
4635 /* If the sym is weak it may be overridden later, so
4636 don't assume we know where a weak sym lives. */
4637 if (h->root.type == bfd_link_hash_defined)
4638 dest = h->root.u.def.section;
4639 }
4640 else
4641 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4642 sec, r_symndx);
4643 if (dest != sec)
7c8fe5c4 4644 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4645 }
721956f4
AM
4646 /* Fall through. */
4647
5d1634d7 4648 case R_PPC64_REL24:
8387904d 4649 if (h != NULL)
5d1634d7
AM
4650 {
4651 /* We may need a .plt entry if the function this reloc
4652 refers to is in a shared lib. */
411e1bfb
AM
4653 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4654 rel->r_addend))
4655 return FALSE;
8387904d
AM
4656 if (h == &htab->tls_get_addr->elf
4657 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4658 sec->has_tls_reloc = 1;
8387904d 4659 else if (htab->tls_get_addr == NULL
0112cd26 4660 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM
4661 && (h->root.root.string[15] == 0
4662 || h->root.root.string[15] == '@'))
411e1bfb 4663 {
8387904d
AM
4664 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4665 sec->has_tls_reloc = 1;
4666 }
4667 else if (htab->tls_get_addr_fd == NULL
0112cd26 4668 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM
4669 && (h->root.root.string[14] == 0
4670 || h->root.root.string[14] == '@'))
4671 {
4672 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM
4673 sec->has_tls_reloc = 1;
4674 }
4675 }
4676 break;
4677
4678 case R_PPC64_TPREL64:
4679 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4680 if (info->shared)
4681 info->flags |= DF_STATIC_TLS;
4682 goto dotlstoc;
4683
4684 case R_PPC64_DTPMOD64:
4685 if (rel + 1 < rel_end
4686 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4687 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4688 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4689 else
951fd09b 4690 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM
4691 goto dotlstoc;
4692
4693 case R_PPC64_DTPREL64:
4694 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4695 if (rel != relocs
4696 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4697 && rel[-1].r_offset == rel->r_offset - 8)
4698 /* This is the second reloc of a dtpmod, dtprel pair.
4699 Don't mark with TLS_DTPREL. */
4700 goto dodyn;
4701
4702 dotlstoc:
4703 sec->has_tls_reloc = 1;
4704 if (h != NULL)
4705 {
4706 struct ppc_link_hash_entry *eh;
4707 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4708 eh->tls_mask |= tls_type;
411e1bfb
AM
4709 }
4710 else
4711 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4712 rel->r_addend, tls_type))
4713 return FALSE;
4714
7c8fe5c4
AM
4715 ppc64_sec = ppc64_elf_section_data (sec);
4716 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4717 {
e7b938ca 4718 /* One extra to simplify get_tls_mask. */
eea6121a 4719 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM
4720 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4721 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4722 return FALSE;
7c8fe5c4
AM
4723 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4724 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM
4725 }
4726 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4727 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM
4728
4729 /* Mark the second slot of a GD or LD entry.
4730 -1 to indicate GD and -2 to indicate LD. */
4731 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4732 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4733 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4734 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM
4735 goto dodyn;
4736
4737 case R_PPC64_TPREL16:
4738 case R_PPC64_TPREL16_LO:
4739 case R_PPC64_TPREL16_HI:
4740 case R_PPC64_TPREL16_HA:
4741 case R_PPC64_TPREL16_DS:
4742 case R_PPC64_TPREL16_LO_DS:
4743 case R_PPC64_TPREL16_HIGHER:
4744 case R_PPC64_TPREL16_HIGHERA:
4745 case R_PPC64_TPREL16_HIGHEST:
4746 case R_PPC64_TPREL16_HIGHESTA:
4747 if (info->shared)
4748 {
4749 info->flags |= DF_STATIC_TLS;
4750 goto dodyn;
5d1634d7
AM
4751 }
4752 break;
4753
e86ce104 4754 case R_PPC64_ADDR64:
1e2f5b6e 4755 if (opd_sym_map != NULL
1e2f5b6e 4756 && rel + 1 < rel_end
4ce794b7 4757 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4758 {
8387904d
AM
4759 if (h != NULL)
4760 {
4761 if (h->root.root.string[0] == '.'
4762 && h->root.root.string[1] != 0
4763 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4764 ;
4765 else
4766 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4767 }
4768 else
4769 {
4770 asection *s;
1e2f5b6e 4771
8387904d
AM
4772 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4773 r_symndx);
4774 if (s == NULL)
4775 return FALSE;
4776 else if (s != sec)
3f764659 4777 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4778 }
1e2f5b6e 4779 }
e86ce104
AM
4780 /* Fall through. */
4781
04c9666a 4782 case R_PPC64_REL30:
5bd4f169 4783 case R_PPC64_REL32:
04c9666a 4784 case R_PPC64_REL64:
65f38f15
AM
4785 case R_PPC64_ADDR14:
4786 case R_PPC64_ADDR14_BRNTAKEN:
4787 case R_PPC64_ADDR14_BRTAKEN:
4788 case R_PPC64_ADDR16:
4789 case R_PPC64_ADDR16_DS:
4790 case R_PPC64_ADDR16_HA:
4791 case R_PPC64_ADDR16_HI:
4792 case R_PPC64_ADDR16_HIGHER:
4793 case R_PPC64_ADDR16_HIGHERA:
4794 case R_PPC64_ADDR16_HIGHEST:
4795 case R_PPC64_ADDR16_HIGHESTA:
4796 case R_PPC64_ADDR16_LO:
4797 case R_PPC64_ADDR16_LO_DS:
4798 case R_PPC64_ADDR24:
65f38f15 4799 case R_PPC64_ADDR32:
65f38f15
AM
4800 case R_PPC64_UADDR16:
4801 case R_PPC64_UADDR32:
4802 case R_PPC64_UADDR64:
5bd4f169 4803 case R_PPC64_TOC:
81848ca0
AM
4804 if (h != NULL && !info->shared)
4805 /* We may need a copy reloc. */
f5385ebf 4806 h->non_got_ref = 1;
81848ca0 4807
41bd81ab 4808 /* Don't propagate .opd relocs. */
1e2f5b6e 4809 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4810 break;
e86ce104 4811
65f38f15
AM
4812 /* If we are creating a shared library, and this is a reloc
4813 against a global symbol, or a non PC relative reloc
4814 against a local symbol, then we need to copy the reloc
4815 into the shared library. However, if we are linking with
4816 -Bsymbolic, we do not need to copy a reloc against a
4817 global symbol which is defined in an object we are
4818 including in the link (i.e., DEF_REGULAR is set). At
4819 this point we have not seen all the input files, so it is
4820 possible that DEF_REGULAR is not set now but will be set
4821 later (it is never cleared). In case of a weak definition,
4822 DEF_REGULAR may be cleared later by a strong definition in
4823 a shared library. We account for that possibility below by
f4656909 4824 storing information in the dyn_relocs field of the hash
65f38f15
AM
4825 table entry. A similar situation occurs when creating
4826 shared libraries and symbol visibility changes render the
4827 symbol local.
4828
4829 If on the other hand, we are creating an executable, we
4830 may need to keep relocations for symbols satisfied by a
4831 dynamic library if we manage to avoid copy relocs for the
4832 symbol. */
411e1bfb 4833 dodyn:
65f38f15 4834 if ((info->shared
411e1bfb 4835 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM
4836 || (h != NULL
4837 && (! info->symbolic
4838 || h->root.type == bfd_link_hash_defweak
f5385ebf 4839 || !h->def_regular))))
f4656909
AM
4840 || (ELIMINATE_COPY_RELOCS
4841 && !info->shared
65f38f15
AM
4842 && h != NULL
4843 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4844 || !h->def_regular)))
5bd4f169 4845 {
ec338859
AM
4846 struct ppc_dyn_relocs *p;
4847 struct ppc_dyn_relocs **head;
4848
65f38f15
AM
4849 /* We must copy these reloc types into the output file.
4850 Create a reloc section in dynobj and make room for
4851 this reloc. */
5bd4f169
AM
4852 if (sreloc == NULL)
4853 {
4854 const char *name;
65f38f15 4855 bfd *dynobj;
5bd4f169
AM
4856
4857 name = (bfd_elf_string_from_elf_section
4858 (abfd,
4859 elf_elfheader (abfd)->e_shstrndx,
4860 elf_section_data (sec)->rel_hdr.sh_name));
4861 if (name == NULL)
b34976b6 4862 return FALSE;
5bd4f169 4863
0112cd26 4864 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM
4865 || strcmp (bfd_get_section_name (abfd, sec),
4866 name + 5) != 0)
4867 {
4868 (*_bfd_error_handler)
d003868e
AM
4869 (_("%B: bad relocation section name `%s\'"),
4870 abfd, name);
5d1634d7 4871 bfd_set_error (bfd_error_bad_value);
65f38f15
AM
4872 }
4873
65f38f15 4874 dynobj = htab->elf.dynobj;
5bd4f169
AM
4875 sreloc = bfd_get_section_by_name (dynobj, name);
4876 if (sreloc == NULL)
4877 {
4878 flagword flags;
4879
5bd4f169 4880 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM
4881 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4882 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L
4883 sreloc = bfd_make_section_with_flags (dynobj,
4884 name,
4885 flags);
5bd4f169 4886 if (sreloc == NULL
65f38f15 4887 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4888 return FALSE;
5bd4f169 4889 }
65f38f15 4890 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM
4891 }
4892
65f38f15
AM
4893 /* If this is a global symbol, we count the number of
4894 relocations we need for this symbol. */
4895 if (h != NULL)
4896 {
ec338859 4897 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM
4898 }
4899 else
4900 {
ec338859
AM
4901 /* Track dynamic relocs needed for local syms too.
4902 We really need local syms available to do this
4903 easily. Oh well. */
4904
4905 asection *s;
6edfbbad
DJ
4906 void *vpp;
4907
ec338859
AM
4908 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4909 sec, r_symndx);
4910 if (s == NULL)
b34976b6 4911 return FALSE;
ec338859 4912
6edfbbad
DJ
4913 vpp = &elf_section_data (s)->local_dynrel;
4914 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 4915 }
ec338859
AM
4916
4917 p = *head;
4918 if (p == NULL || p->sec != sec)
4919 {
4ce794b7 4920 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4921 if (p == NULL)
b34976b6 4922 return FALSE;
ec338859
AM
4923 p->next = *head;
4924 *head = p;
4925 p->sec = sec;
4926 p->count = 0;
4927 p->pc_count = 0;
4928 }
4929
4930 p->count += 1;
411e1bfb 4931 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4932 p->pc_count += 1;
65f38f15 4933 }
5bd4f169 4934 break;
65f38f15
AM
4935
4936 default:
96e0dda4 4937 break;
5bd4f169
AM
4938 }
4939 }
4940
b34976b6 4941 return TRUE;
5bd4f169
AM
4942}
4943
8387904d
AM
4944/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4945 of the code entry point, and its section. */
4946
4947static bfd_vma
4948opd_entry_value (asection *opd_sec,
4949 bfd_vma offset,
4950 asection **code_sec,
4951 bfd_vma *code_off)
4952{
4953 bfd *opd_bfd = opd_sec->owner;
8860955f 4954 Elf_Internal_Rela *relocs;
8387904d 4955 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4956 bfd_vma val;
8387904d 4957
4b85d634
AM
4958 /* No relocs implies we are linking a --just-symbols object. */
4959 if (opd_sec->reloc_count == 0)
4960 {
4961 bfd_vma val;
4962
4963 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4964 return (bfd_vma) -1;
3b36f7e6 4965
4b85d634
AM
4966 if (code_sec != NULL)
4967 {
4968 asection *sec, *likely = NULL;
4969 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4970 if (sec->vma <= val
4971 && (sec->flags & SEC_LOAD) != 0
4972 && (sec->flags & SEC_ALLOC) != 0)
4973 likely = sec;
4974 if (likely != NULL)
4975 {
4976 *code_sec = likely;
4977 if (code_off != NULL)
4978 *code_off = val - likely->vma;
4979 }
4980 }
4981 return val;
4982 }
4983
0c8d6e5c 4984 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 4985
8860955f
AM
4986 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4987 if (relocs == NULL)
4988 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4989
8387904d 4990 /* Go find the opd reloc at the sym address. */
8860955f 4991 lo = relocs;
8387904d
AM
4992 BFD_ASSERT (lo != NULL);
4993 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4994 val = (bfd_vma) -1;
8387904d
AM
4995 while (lo < hi)
4996 {
4997 look = lo + (hi - lo) / 2;
4998 if (look->r_offset < offset)
4999 lo = look + 1;
5000 else if (look->r_offset > offset)
5001 hi = look;
5002 else
5003 {
0ffa91dd
NC
5004 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5005
8387904d
AM
5006 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5007 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5008 {
5009 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM
5010 asection *sec;
5011
5012 if (symndx < symtab_hdr->sh_info)
5013 {
5014 Elf_Internal_Sym *sym;
5015
5016 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5017 if (sym == NULL)
5018 {
5019 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5020 symtab_hdr->sh_info,
5021 0, NULL, NULL, NULL);
5022 if (sym == NULL)
645ea6a9 5023 break;
8387904d
AM
5024 symtab_hdr->contents = (bfd_byte *) sym;
5025 }
5026
5027 sym += symndx;
5028 val = sym->st_value;
5029 sec = NULL;
5030 if ((sym->st_shndx != SHN_UNDEF
5031 && sym->st_shndx < SHN_LORESERVE)
5032 || sym->st_shndx > SHN_HIRESERVE)
5033 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5034 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5035 }
5036 else
5037 {
5038 struct elf_link_hash_entry **sym_hashes;
5039 struct elf_link_hash_entry *rh;
5040
5041 sym_hashes = elf_sym_hashes (opd_bfd);
5042 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5043 while (rh->root.type == bfd_link_hash_indirect
5044 || rh->root.type == bfd_link_hash_warning)
5045 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5046 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5047 || rh->root.type == bfd_link_hash_defweak);
5048 val = rh->root.u.def.value;
5049 sec = rh->root.u.def.section;
5050 }
5051 val += look->r_addend;
5052 if (code_off != NULL)
5053 *code_off = val;
5054 if (code_sec != NULL)
5055 *code_sec = sec;
5056 if (sec != NULL && sec->output_section != NULL)
5057 val += sec->output_section->vma + sec->output_offset;
8387904d
AM
5058 }
5059 break;
5060 }
5061 }
645ea6a9 5062
645ea6a9 5063 return val;
8387904d
AM
5064}
5065
74f0fb50
AM
5066/* Mark all our entry sym sections, both opd and code section. */
5067
5068static void
5069ppc64_elf_gc_keep (struct bfd_link_info *info)
5070{
5071 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5072 struct bfd_sym_chain *sym;
5073
5074 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5075 {
5076 struct ppc_link_hash_entry *eh;
5077 asection *sec;
5078
5079 eh = (struct ppc_link_hash_entry *)
5080 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5081 if (eh == NULL)
5082 continue;
5083 if (eh->elf.root.type != bfd_link_hash_defined
5084 && eh->elf.root.type != bfd_link_hash_defweak)
5085 continue;
5086
5087 if (eh->is_func_descriptor
5088 && (eh->oh->elf.root.type == bfd_link_hash_defined
5089 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5090 {
5091 sec = eh->oh->elf.root.u.def.section;
5092 sec->flags |= SEC_KEEP;
5093 }
5094 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5095 && opd_entry_value (eh->elf.root.u.def.section,
5096 eh->elf.root.u.def.value,
5097 &sec, NULL) != (bfd_vma) -1)
5098 sec->flags |= SEC_KEEP;
5099
5100 sec = eh->elf.root.u.def.section;
5101 sec->flags |= SEC_KEEP;
5102 }
5103}
5104
64d03ab5
AM
5105/* Mark sections containing dynamically referenced symbols. When
5106 building shared libraries, we must assume that any visible symbol is
5107 referenced. */
5108
5109static bfd_boolean
5110ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5111{
5112 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5113 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5114
5115 if (eh->elf.root.type == bfd_link_hash_warning)
5116 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5117
5118 /* Dynamic linking info is on the func descriptor sym. */
5119 if (eh->oh != NULL
5120 && eh->oh->is_func_descriptor
5121 && (eh->oh->elf.root.type == bfd_link_hash_defined
5122 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5123 eh = eh->oh;
5124
5125 if ((eh->elf.root.type == bfd_link_hash_defined
5126 || eh->elf.root.type == bfd_link_hash_defweak)
5127 && (eh->elf.ref_dynamic
5128 || (!info->executable
5129 && eh->elf.def_regular
5130 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5131 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5132 {
5133 asection *code_sec;
5134
5135 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5136
5137 /* Function descriptor syms cause the associated
5138 function code sym section to be marked. */
5139 if (eh->is_func_descriptor
5140 && (eh->oh->elf.root.type == bfd_link_hash_defined
5141 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5142 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5143 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5144 && opd_entry_value (eh->elf.root.u.def.section,
5145 eh->elf.root.u.def.value,
5146 &code_sec, NULL) != (bfd_vma) -1)
5147 code_sec->flags |= SEC_KEEP;
5148 }
5149
5150 return TRUE;
5151}
5152
5bd4f169
AM
5153/* Return the section that should be marked against GC for a given
5154 relocation. */
5155
5156static asection *
4ce794b7 5157ppc64_elf_gc_mark_hook (asection *sec,
74f0fb50 5158 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4ce794b7
AM
5159 Elf_Internal_Rela *rel,
5160 struct elf_link_hash_entry *h,
5161 Elf_Internal_Sym *sym)
5bd4f169 5162{
ccfa59ea
AM
5163 asection *rsec;
5164
ccfa59ea
AM
5165 /* Syms return NULL if we're marking .opd, so we avoid marking all
5166 function sections, as all functions are referenced in .opd. */
5167 rsec = NULL;
5168 if (get_opd_info (sec) != NULL)
5169 return rsec;
1e2f5b6e 5170
5bd4f169
AM
5171 if (h != NULL)
5172 {
04c9666a 5173 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5174 struct ppc_link_hash_entry *eh;
a33d1f77 5175
4ce794b7 5176 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5177 switch (r_type)
5bd4f169
AM
5178 {
5179 case R_PPC64_GNU_VTINHERIT:
5180 case R_PPC64_GNU_VTENTRY:
5181 break;
5182
5183 default:
5184 switch (h->root.type)
5185 {
5186 case bfd_link_hash_defined:
5187 case bfd_link_hash_defweak:
ccfa59ea 5188 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM
5189 if (eh->oh != NULL
5190 && eh->oh->is_func_descriptor
5191 && (eh->oh->elf.root.type == bfd_link_hash_defined
5192 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5193 eh = eh->oh;
1e2f5b6e
AM
5194
5195 /* Function descriptor syms cause the associated
5196 function code sym section to be marked. */
c4f68ce3
AM
5197 if (eh->is_func_descriptor
5198 && (eh->oh->elf.root.type == bfd_link_hash_defined
5199 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM
5200 {
5201 /* They also mark their opd section. */
74f0fb50 5202 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea
AM
5203
5204 rsec = eh->oh->elf.root.u.def.section;
5205 }
8387904d
AM
5206 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5207 && opd_entry_value (eh->elf.root.u.def.section,
5208 eh->elf.root.u.def.value,
5209 &rsec, NULL) != (bfd_vma) -1)
74f0fb50 5210 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5211 else
1e2f5b6e
AM
5212 rsec = h->root.u.def.section;
5213 break;
5bd4f169
AM
5214
5215 case bfd_link_hash_common:
1e2f5b6e
AM
5216 rsec = h->root.u.c.p->section;
5217 break;
5bd4f169
AM
5218
5219 default:
5220 break;
5221 }
5222 }
5223 }
5224 else
5225 {
74f0fb50 5226 struct _opd_sec_data *opd;
1e2f5b6e
AM
5227
5228 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM
5229 opd = get_opd_info (rsec);
5230 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5231 {
74f0fb50 5232 rsec->gc_mark = 1;
ccfa59ea 5233
74f0fb50 5234 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5235 }
5bd4f169
AM
5236 }
5237
1e2f5b6e 5238 return rsec;
5bd4f169
AM
5239}
5240
65f38f15
AM
5241/* Update the .got, .plt. and dynamic reloc reference counts for the
5242 section being removed. */
5bd4f169 5243
b34976b6 5244static bfd_boolean
4ce794b7
AM
5245ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5246 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5247{
411e1bfb 5248 struct ppc_link_hash_table *htab;
5bd4f169
AM
5249 Elf_Internal_Shdr *symtab_hdr;
5250 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5251 struct got_entry **local_got_ents;
5bd4f169 5252 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5253
7dda2462
TG
5254 if (info->relocatable)
5255 return TRUE;
5256
680a3378
AM
5257 if ((sec->flags & SEC_ALLOC) == 0)
5258 return TRUE;
5259
ec338859
AM
5260 elf_section_data (sec)->local_dynrel = NULL;
5261
411e1bfb 5262 htab = ppc_hash_table (info);
0ffa91dd 5263 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5264 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5265 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM
5266
5267 relend = relocs + sec->reloc_count;
5268 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM
5269 {
5270 unsigned long r_symndx;
04c9666a 5271 enum elf_ppc64_reloc_type r_type;
58ac9f71 5272 struct elf_link_hash_entry *h = NULL;
411e1bfb 5273 char tls_type = 0;
5bd4f169 5274
a33d1f77 5275 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5276 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM
5277 if (r_symndx >= symtab_hdr->sh_info)
5278 {
5279 struct ppc_link_hash_entry *eh;
5280 struct ppc_dyn_relocs **pp;
5281 struct ppc_dyn_relocs *p;
5282
5283 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
5284 while (h->root.type == bfd_link_hash_indirect
5285 || h->root.type == bfd_link_hash_warning)
5286 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM
5287 eh = (struct ppc_link_hash_entry *) h;
5288
5289 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5290 if (p->sec == sec)
5291 {
5292 /* Everything must go for SEC. */
5293 *pp = p->next;
5294 break;
5295 }
5296 }
5297
a33d1f77
AM
5298 switch (r_type)
5299 {
411e1bfb
AM
5300 case R_PPC64_GOT_TLSLD16:
5301 case R_PPC64_GOT_TLSLD16_LO:
5302 case R_PPC64_GOT_TLSLD16_HI:
5303 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5304 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5305 goto dogot;
5306
5307 case R_PPC64_GOT_TLSGD16:
5308 case R_PPC64_GOT_TLSGD16_LO:
5309 case R_PPC64_GOT_TLSGD16_HI:
5310 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5311 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5312 goto dogot;
5313
5314 case R_PPC64_GOT_TPREL16_DS:
5315 case R_PPC64_GOT_TPREL16_LO_DS:
5316 case R_PPC64_GOT_TPREL16_HI:
5317 case R_PPC64_GOT_TPREL16_HA:
5318 tls_type = TLS_TLS | TLS_TPREL;
5319 goto dogot;
5320
5321 case R_PPC64_GOT_DTPREL16_DS:
5322 case R_PPC64_GOT_DTPREL16_LO_DS:
5323 case R_PPC64_GOT_DTPREL16_HI:
5324 case R_PPC64_GOT_DTPREL16_HA:
5325 tls_type = TLS_TLS | TLS_DTPREL;
5326 goto dogot;
5327
a33d1f77
AM
5328 case R_PPC64_GOT16:
5329 case R_PPC64_GOT16_DS:
5330 case R_PPC64_GOT16_HA:
5331 case R_PPC64_GOT16_HI:
5332 case R_PPC64_GOT16_LO:
5333 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM
5334 dogot:
5335 {
5336 struct got_entry *ent;
5337
58ac9f71
AM
5338 if (h != NULL)
5339 ent = h->got.glist;
411e1bfb
AM
5340 else
5341 ent = local_got_ents[r_symndx];
5342
5343 for (; ent != NULL; ent = ent->next)
5344 if (ent->addend == rel->r_addend
e717da7e 5345 && ent->owner == abfd
411e1bfb
AM
5346 && ent->tls_type == tls_type)
5347 break;
5348 if (ent == NULL)
5349 abort ();
5350 if (ent->got.refcount > 0)
5351 ent->got.refcount -= 1;
5352 }
a33d1f77 5353 break;
65f38f15 5354
a33d1f77
AM
5355 case R_PPC64_PLT16_HA:
5356 case R_PPC64_PLT16_HI:
5357 case R_PPC64_PLT16_LO:
5358 case R_PPC64_PLT32:
5359 case R_PPC64_PLT64:
721956f4
AM
5360 case R_PPC64_REL14:
5361 case R_PPC64_REL14_BRNTAKEN:
5362 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5363 case R_PPC64_REL24:
58ac9f71 5364 if (h != NULL)
5d1634d7 5365 {
411e1bfb
AM
5366 struct plt_entry *ent;
5367
411e1bfb
AM
5368 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5369 if (ent->addend == rel->r_addend)
5370 break;
5371 if (ent == NULL)
5372 abort ();
5373 if (ent->plt.refcount > 0)
5374 ent->plt.refcount -= 1;
5d1634d7 5375 }
e86ce104 5376 break;
5d1634d7 5377
a33d1f77
AM
5378 default:
5379 break;
5380 }
5381 }
b34976b6 5382 return TRUE;
5bd4f169
AM
5383}
5384
deb0e272
AM
5385/* The maximum size of .sfpr. */
5386#define SFPR_MAX (218*4)
5387
5388struct sfpr_def_parms
5389{
699733f6
AM
5390 const char name[12];
5391 unsigned char lo, hi;
deb0e272
AM
5392 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5393 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5394};
5395
5396/* Auto-generate _save*, _rest* functions in .sfpr. */
5397
5398static unsigned int
5399sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5400{
5401 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5402 unsigned int i;
5403 size_t len = strlen (parm->name);
5404 bfd_boolean writing = FALSE;
699733f6 5405 char sym[16];
deb0e272
AM
5406
5407 memcpy (sym, parm->name, len);
5408 sym[len + 2] = 0;
5409
5410 for (i = parm->lo; i <= parm->hi; i++)
5411 {
5412 struct elf_link_hash_entry *h;
5413
5414 sym[len + 0] = i / 10 + '0';
5415 sym[len + 1] = i % 10 + '0';
5416 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5417 if (h != NULL
f5385ebf 5418 && !h->def_regular)
deb0e272
AM
5419 {
5420 h->root.type = bfd_link_hash_defined;
5421 h->root.u.def.section = htab->sfpr;
5422 h->root.u.def.value = htab->sfpr->size;
5423 h->type = STT_FUNC;
f5385ebf 5424 h->def_regular = 1;
deb0e272
AM
5425 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5426 writing = TRUE;
5427 if (htab->sfpr->contents == NULL)
5428 {
5429 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5430 if (htab->sfpr->contents == NULL)
5431 return FALSE;
5432 }
5433 }
5434 if (writing)
5435 {
5436 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5437 if (i != parm->hi)
5438 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5439 else
5440 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5441 htab->sfpr->size = p - htab->sfpr->contents;
5442 }
5443 }
5444
5445 return TRUE;
5446}
5447
5448static bfd_byte *
5449savegpr0 (bfd *abfd, bfd_byte *p, int r)
5450{
5451 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5452 return p + 4;
5453}
5454
5455static bfd_byte *
5456savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5457{
5458 p = savegpr0 (abfd, p, r);
5459 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5460 p = p + 4;
5461 bfd_put_32 (abfd, BLR, p);
5462 return p + 4;
5463}
5464
5465static bfd_byte *
5466restgpr0 (bfd *abfd, bfd_byte *p, int r)
5467{
5468 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5469 return p + 4;
5470}
5471
5472static bfd_byte *
5473restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5474{
5475 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5476 p = p + 4;
5477 p = restgpr0 (abfd, p, r);
5478 bfd_put_32 (abfd, MTLR_R0, p);
5479 p = p + 4;
5480 if (r == 29)
5481 {
5482 p = restgpr0 (abfd, p, 30);
5483 p = restgpr0 (abfd, p, 31);
5484 }
5485 bfd_put_32 (abfd, BLR, p);
5486 return p + 4;
5487}
5488
5489static bfd_byte *
5490savegpr1 (bfd *abfd, bfd_byte *p, int r)
5491{
5492 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5493 return p + 4;
5494}
5495
5496static bfd_byte *
5497savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5498{
5499 p = savegpr1 (abfd, p, r);
5500 bfd_put_32 (abfd, BLR, p);
5501 return p + 4;
5502}
5503
5504static bfd_byte *
5505restgpr1 (bfd *abfd, bfd_byte *p, int r)
5506{
5507 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5508 return p + 4;
5509}
5510
5511static bfd_byte *
5512restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5513{
5514 p = restgpr1 (abfd, p, r);
5515 bfd_put_32 (abfd, BLR, p);
5516 return p + 4;
5517}
5518
5519static bfd_byte *
5520savefpr (bfd *abfd, bfd_byte *p, int r)
5521{
5522 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5523 return p + 4;
5524}
5525
5526static bfd_byte *
5527savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5528{
5529 p = savefpr (abfd, p, r);
5530 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5531 p = p + 4;
5532 bfd_put_32 (abfd, BLR, p);
5533 return p + 4;
5534}
5535
5536static bfd_byte *
5537restfpr (bfd *abfd, bfd_byte *p, int r)
5538{
5539 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5540 return p + 4;
5541}
5542
5543static bfd_byte *
5544restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5545{
5546 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5547 p = p + 4;
5548 p = restfpr (abfd, p, r);
5549 bfd_put_32 (abfd, MTLR_R0, p);
5550 p = p + 4;
5551 if (r == 29)
5552 {
5553 p = restfpr (abfd, p, 30);
5554 p = restfpr (abfd, p, 31);
5555 }
5556 bfd_put_32 (abfd, BLR, p);
5557 return p + 4;
5558}
5559
5560static bfd_byte *
5561savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5562{
5563 p = savefpr (abfd, p, r);
5564 bfd_put_32 (abfd, BLR, p);
5565 return p + 4;
5566}
5567
5568static bfd_byte *
5569restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5570{
5571 p = restfpr (abfd, p, r);
5572 bfd_put_32 (abfd, BLR, p);
5573 return p + 4;
5574}
5575
5576static bfd_byte *
5577savevr (bfd *abfd, bfd_byte *p, int r)
5578{
5579 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5580 p = p + 4;
5581 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5582 return p + 4;
5583}
5584
5585static bfd_byte *
5586savevr_tail (bfd *abfd, bfd_byte *p, int r)
5587{
5588 p = savevr (abfd, p, r);
5589 bfd_put_32 (abfd, BLR, p);
5590 return p + 4;
5591}
5592
5593static bfd_byte *
5594restvr (bfd *abfd, bfd_byte *p, int r)
5595{
5596 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5597 p = p + 4;
5598 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5599 return p + 4;
5600}
5601
5602static bfd_byte *
5603restvr_tail (bfd *abfd, bfd_byte *p, int r)
5604{
5605 p = restvr (abfd, p, r);
5606 bfd_put_32 (abfd, BLR, p);
5607 return p + 4;
5608}
5609
e86ce104
AM
5610/* Called via elf_link_hash_traverse to transfer dynamic linking
5611 information on function code symbol entries to their corresponding
5612 function descriptor symbol entries. */
deb0e272 5613
b34976b6 5614static bfd_boolean
4ce794b7 5615func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5616{
e86ce104 5617 struct bfd_link_info *info;
65f38f15 5618 struct ppc_link_hash_table *htab;
411e1bfb 5619 struct plt_entry *ent;
50bc7936
AM
5620 struct ppc_link_hash_entry *fh;
5621 struct ppc_link_hash_entry *fdh;
5622 bfd_boolean force_local;
5bd4f169 5623
50bc7936
AM
5624 fh = (struct ppc_link_hash_entry *) h;
5625 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5626 return TRUE;
e86ce104 5627
50bc7936
AM
5628 if (fh->elf.root.type == bfd_link_hash_warning)
5629 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5630
4ce794b7 5631 info = inf;
65f38f15 5632 htab = ppc_hash_table (info);
5bd4f169 5633
c09bdfe5
AM
5634 /* Resolve undefined references to dot-symbols as the value
5635 in the function descriptor, if we have one in a regular object.
5636 This is to satisfy cases like ".quad .foo". Calls to functions
5637 in dynamic objects are handled elsewhere. */
5638 if (fh->elf.root.type == bfd_link_hash_undefweak
5639 && fh->was_undefined
5640 && (fh->oh->elf.root.type == bfd_link_hash_defined
5641 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5642 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5643 && opd_entry_value (fh->oh->elf.root.u.def.section,
5644 fh->oh->elf.root.u.def.value,
5645 &fh->elf.root.u.def.section,
5646 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5647 {
5648 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5649 fh->elf.forced_local = 1;
2b953679
AM
5650 fh->elf.def_regular = fh->oh->elf.def_regular;
5651 fh->elf.def_dynamic = fh->oh->elf.def_dynamic;
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 5806 asection *s;
e86ce104
AM
5807
5808 htab = ppc_hash_table (info);
5809
5810 /* Deal with function syms. */
5811 if (h->type == STT_FUNC
f5385ebf 5812 || h->needs_plt)
e86ce104
AM
5813 {
5814 /* Clear procedure linkage table information for any symbol that
5815 won't need a .plt entry. */
411e1bfb
AM
5816 struct plt_entry *ent;
5817 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5818 if (ent->plt.refcount > 0)
5819 break;
8387904d 5820 if (ent == NULL
9c7a29a3
AM
5821 || SYMBOL_CALLS_LOCAL (info, h)
5822 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5823 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5824 {
411e1bfb 5825 h->plt.plist = NULL;
f5385ebf 5826 h->needs_plt = 0;
40b8271b 5827 }
5bd4f169 5828 }
bbd7ec4a 5829 else
411e1bfb 5830 h->plt.plist = NULL;
5bd4f169
AM
5831
5832 /* If this is a weak symbol, and there is a real definition, the
5833 processor independent code will have arranged for us to see the
5834 real definition first, and we can just use the same value. */
f6e332e6 5835 if (h->u.weakdef != NULL)
5bd4f169 5836 {
f6e332e6
AM
5837 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5838 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5839 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5840 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5841 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5842 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5843 return TRUE;
5bd4f169
AM
5844 }
5845
5bd4f169
AM
5846 /* If we are creating a shared library, we must presume that the
5847 only references to the symbol are via the global offset table.
5848 For such cases we need not do anything here; the relocations will
5849 be handled correctly by relocate_section. */
5850 if (info->shared)
b34976b6 5851 return TRUE;
5bd4f169 5852
65f38f15
AM
5853 /* If there are no references to this symbol that do not use the
5854 GOT, we don't need to generate a copy reloc. */
f5385ebf 5855 if (!h->non_got_ref)
b34976b6 5856 return TRUE;
65f38f15 5857
b186458a
JJ
5858 /* Don't generate a copy reloc for symbols defined in the executable. */
5859 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
5860 return TRUE;
5861
f4656909 5862 if (ELIMINATE_COPY_RELOCS)
65f38f15 5863 {
f4656909
AM
5864 struct ppc_link_hash_entry * eh;
5865 struct ppc_dyn_relocs *p;
65f38f15 5866
f4656909
AM
5867 eh = (struct ppc_link_hash_entry *) h;
5868 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5869 {
5870 s = p->sec->output_section;
5871 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5872 break;
5873 }
5874
5875 /* If we didn't find any dynamic relocs in read-only sections, then
5876 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5877 if (p == NULL)
5878 {
f5385ebf 5879 h->non_got_ref = 0;
f4656909
AM
5880 return TRUE;
5881 }
65f38f15
AM
5882 }
5883
5d35169e 5884 if (h->plt.plist != NULL)
97b639ba
AM
5885 {
5886 /* We should never get here, but unfortunately there are versions
5887 of gcc out there that improperly (for this ABI) put initialized
5888 function pointers, vtable refs and suchlike in read-only
5889 sections. Allow them to proceed, but warn that this might
5890 break at runtime. */
5891 (*_bfd_error_handler)
5892 (_("copy reloc against `%s' requires lazy plt linking; "
5893 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5894 h->root.root.string);
5895 }
5d35169e
AM
5896
5897 /* This is a reference to a symbol defined by a dynamic object which
5898 is not a function. */
5899
909272ee
AM
5900 if (h->size == 0)
5901 {
5902 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5903 h->root.root.string);
5904 return TRUE;
5905 }
5906
5bd4f169
AM
5907 /* We must allocate the symbol in our .dynbss section, which will
5908 become part of the .bss section of the executable. There will be
5909 an entry for this symbol in the .dynsym section. The dynamic
5910 object will contain position independent code, so all references
5911 from the dynamic object to this symbol will go through the global
5912 offset table. The dynamic linker will use the .dynsym entry to
5913 determine the address it must put in the global offset table, so
5914 both the dynamic object and the regular object will refer to the
5915 same memory location for the variable. */
5bd4f169 5916
04c9666a
AM
5917 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5918 to copy the initial value out of the dynamic object and into the
5bd4f169
AM
5919 runtime process image. We need to remember the offset into the
5920 .rela.bss section we are going to use. */
5921 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5922 {
eea6121a 5923 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5924 h->needs_copy = 1;
5bd4f169
AM
5925 }
5926
4ce794b7 5927 s = htab->dynbss;
5bd4f169 5928
027297b7 5929 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM
5930}
5931
e86ce104
AM
5932/* If given a function descriptor symbol, hide both the function code
5933 sym and the descriptor. */
5934static void
4ce794b7
AM
5935ppc64_elf_hide_symbol (struct bfd_link_info *info,
5936 struct elf_link_hash_entry *h,
5937 bfd_boolean force_local)
e86ce104 5938{
34814b9f 5939 struct ppc_link_hash_entry *eh;
e86ce104
AM
5940 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5941
34814b9f
AM
5942 eh = (struct ppc_link_hash_entry *) h;
5943 if (eh->is_func_descriptor)
e86ce104 5944 {
34814b9f 5945 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5946
721956f4 5947 if (fh == NULL)
d1329ca3
AM
5948 {
5949 const char *p, *q;
5950 struct ppc_link_hash_table *htab;
5951 char save;
5952
5953 /* We aren't supposed to use alloca in BFD because on
5954 systems which do not have alloca the version in libiberty
5955 calls xmalloc, which might cause the program to crash
5956 when it runs out of memory. This function doesn't have a
5957 return status, so there's no way to gracefully return an
5958 error. So cheat. We know that string[-1] can be safely
34814b9f
AM
5959 accessed; It's either a string in an ELF string table,
5960 or allocated in an objalloc structure. */
d1329ca3 5961
34814b9f 5962 p = eh->elf.root.root.string - 1;
d1329ca3
AM
5963 save = *p;
5964 *(char *) p = '.';
5965 htab = ppc_hash_table (info);
34814b9f
AM
5966 fh = (struct ppc_link_hash_entry *)
5967 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
5968 *(char *) p = save;
5969
5970 /* Unfortunately, if it so happens that the string we were
5971 looking for was allocated immediately before this string,
5972 then we overwrote the string terminator. That's the only
5973 reason the lookup should fail. */
5974 if (fh == NULL)
5975 {
34814b9f
AM
5976 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5977 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5978 --q, --p;
34814b9f
AM
5979 if (q < eh->elf.root.root.string && *p == '.')
5980 fh = (struct ppc_link_hash_entry *)
5981 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
5982 }
5983 if (fh != NULL)
5984 {
34814b9f
AM
5985 eh->oh = fh;
5986 fh->oh = eh;
d1329ca3
AM
5987 }
5988 }
e86ce104 5989 if (fh != NULL)
34814b9f 5990 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM
5991 }
5992}
5993
411e1bfb 5994static bfd_boolean
8843416a
AM
5995get_sym_h (struct elf_link_hash_entry **hp,
5996 Elf_Internal_Sym **symp,
5997 asection **symsecp,
5998 char **tls_maskp,
5999 Elf_Internal_Sym **locsymsp,
6000 unsigned long r_symndx,
6001 bfd *ibfd)
411e1bfb 6002{
0ffa91dd 6003 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM
6004
6005 if (r_symndx >= symtab_hdr->sh_info)
6006 {
6007 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6008 struct elf_link_hash_entry *h;
6009
6010 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6011 while (h->root.type == bfd_link_hash_indirect
6012 || h->root.type == bfd_link_hash_warning)
6013 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6014
6015 if (hp != NULL)
6016 *hp = h;
6017
6018 if (symp != NULL)
6019 *symp = NULL;
6020
6021 if (symsecp != NULL)
6022 {
6023 asection *symsec = NULL;
6024 if (h->root.type == bfd_link_hash_defined
6025 || h->root.type == bfd_link_hash_defweak)
6026 symsec = h->root.u.def.section;
6027 *symsecp = symsec;
6028 }
6029
e7b938ca 6030 if (tls_maskp != NULL)
411e1bfb
AM
6031 {
6032 struct ppc_link_hash_entry *eh;
6033
6034 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6035 *tls_maskp = &eh->tls_mask;
411e1bfb
AM
6036 }
6037 }
6038 else
6039 {
6040 Elf_Internal_Sym *sym;
6041 Elf_Internal_Sym *locsyms = *locsymsp;
6042
6043 if (locsyms == NULL)
6044 {
6045 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6046 if (locsyms == NULL)
6047 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6048 symtab_hdr->sh_info,
6049 0, NULL, NULL, NULL);
6050 if (locsyms == NULL)
6051 return FALSE;
6052 *locsymsp = locsyms;
6053 }
6054 sym = locsyms + r_symndx;
6055
6056 if (hp != NULL)
6057 *hp = NULL;
6058
6059 if (symp != NULL)
6060 *symp = sym;
6061
6062 if (symsecp != NULL)
6063 {
6064 asection *symsec = NULL;
6065 if ((sym->st_shndx != SHN_UNDEF
6066 && sym->st_shndx < SHN_LORESERVE)
6067 || sym->st_shndx > SHN_HIRESERVE)
6068 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6069 *symsecp = symsec;
6070 }
6071
e7b938ca 6072 if (tls_maskp != NULL)
411e1bfb
AM
6073 {
6074 struct got_entry **lgot_ents;
e7b938ca 6075 char *tls_mask;
411e1bfb 6076
e7b938ca 6077 tls_mask = NULL;
411e1bfb
AM
6078 lgot_ents = elf_local_got_ents (ibfd);
6079 if (lgot_ents != NULL)
6080 {
e7b938ca
AM
6081 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6082 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6083 }
e7b938ca 6084 *tls_maskp = tls_mask;
411e1bfb
AM
6085 }
6086 }
6087 return TRUE;
6088}
6089
e7b938ca 6090/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6091 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6092 type suitable for optimization, and 1 otherwise. */
951fd09b
AM
6093
6094static int
0d4792f7
AM
6095get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6096 Elf_Internal_Sym **locsymsp,
4ce794b7 6097 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM
6098{
6099 unsigned long r_symndx;
0d4792f7 6100 int next_r;
411e1bfb
AM
6101 struct elf_link_hash_entry *h;
6102 Elf_Internal_Sym *sym;
6103 asection *sec;
6104 bfd_vma off;
6105
6106 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6107 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6108 return 0;
411e1bfb 6109
e7b938ca 6110 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6111 || sec == NULL
7c8fe5c4 6112 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6113 return 1;
411e1bfb
AM
6114
6115 /* Look inside a TOC section too. */
6116 if (h != NULL)
6117 {
6118 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6119 off = h->root.u.def.value;
6120 }
6121 else
6122 off = sym->st_value;
6123 off += rel->r_addend;
6124 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM
6125 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6126 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6127 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6128 return 0;
0d4792f7
AM
6129 if (toc_symndx != NULL)
6130 *toc_symndx = r_symndx;
6131 if ((h == NULL
6132 || ((h->root.type == bfd_link_hash_defined
6133 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6134 && !h->def_dynamic))
0d4792f7
AM
6135 && (next_r == -1 || next_r == -2))
6136 return 1 - next_r;
951fd09b 6137 return 1;
411e1bfb
AM
6138}
6139
754021d0 6140/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6141 code for the old ABI, these will already have been done. */
754021d0
AM
6142
6143static bfd_boolean
6144adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6145{
6146 struct ppc_link_hash_entry *eh;
6147 asection *sym_sec;
74f0fb50 6148 struct _opd_sec_data *opd;
754021d0
AM
6149
6150 if (h->root.type == bfd_link_hash_indirect)
6151 return TRUE;
6152
6153 if (h->root.type == bfd_link_hash_warning)
6154 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6155
6156 if (h->root.type != bfd_link_hash_defined
6157 && h->root.type != bfd_link_hash_defweak)
6158 return TRUE;
6159
6160 eh = (struct ppc_link_hash_entry *) h;
6161 if (eh->adjust_done)
6162 return TRUE;
6163
6164 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM
6165 opd = get_opd_info (sym_sec);
6166 if (opd != NULL && opd->adjust != NULL)
754021d0 6167 {
74f0fb50 6168 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM
6169 if (adjust == -1)
6170 {
6171 /* This entry has been deleted. */
b3fac117 6172 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM
6173 if (dsec == NULL)
6174 {
6175 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6176 if (elf_discarded_section (dsec))
6177 {
b3fac117 6178 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM
6179 break;
6180 }
6181 }
4025353c 6182 eh->elf.root.u.def.value = 0;
81688140 6183 eh->elf.root.u.def.section = dsec;
4025353c
AM
6184 }
6185 else
6186 eh->elf.root.u.def.value += adjust;
754021d0
AM
6187 eh->adjust_done = 1;
6188 }
6189 return TRUE;
6190}
6191
8c1d1bb8
AM
6192/* Handles decrementing dynamic reloc counts for the reloc specified by
6193 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6194 have already been determined. */
6195
6196static bfd_boolean
6197dec_dynrel_count (bfd_vma r_info,
6198 asection *sec,
6199 struct bfd_link_info *info,
6200 Elf_Internal_Sym **local_syms,
6201 struct elf_link_hash_entry *h,
6202 asection *sym_sec)
6203{
6204 enum elf_ppc64_reloc_type r_type;
6205 struct ppc_dyn_relocs *p;
6206 struct ppc_dyn_relocs **pp;
6207
6208 /* Can this reloc be dynamic? This switch, and later tests here
6209 should be kept in sync with the code in check_relocs. */
6210 r_type = ELF64_R_TYPE (r_info);
6211 switch (r_type)
6212 {
6213 default:
6214 return TRUE;
6215
6216 case R_PPC64_TPREL16:
6217 case R_PPC64_TPREL16_LO:
6218 case R_PPC64_TPREL16_HI:
6219 case R_PPC64_TPREL16_HA:
6220 case R_PPC64_TPREL16_DS:
6221 case R_PPC64_TPREL16_LO_DS:
6222 case R_PPC64_TPREL16_HIGHER:
6223 case R_PPC64_TPREL16_HIGHERA:
6224 case R_PPC64_TPREL16_HIGHEST:
6225 case R_PPC64_TPREL16_HIGHESTA:
6226 if (!info->shared)
6227 return TRUE;
6228
6229 case R_PPC64_TPREL64:
6230 case R_PPC64_DTPMOD64:
6231 case R_PPC64_DTPREL64:
6232 case R_PPC64_ADDR64:
6233 case R_PPC64_REL30:
6234 case R_PPC64_REL32:
6235 case R_PPC64_REL64:
6236 case R_PPC64_ADDR14:
6237 case R_PPC64_ADDR14_BRNTAKEN:
6238 case R_PPC64_ADDR14_BRTAKEN:
6239 case R_PPC64_ADDR16:
6240 case R_PPC64_ADDR16_DS:
6241 case R_PPC64_ADDR16_HA:
6242 case R_PPC64_ADDR16_HI:
6243 case R_PPC64_ADDR16_HIGHER:
6244 case R_PPC64_ADDR16_HIGHERA:
6245 case R_PPC64_ADDR16_HIGHEST:
6246 case R_PPC64_ADDR16_HIGHESTA:
6247 case R_PPC64_ADDR16_LO:
6248 case R_PPC64_ADDR16_LO_DS:
6249 case R_PPC64_ADDR24:
6250 case R_PPC64_ADDR32:
6251 case R_PPC64_UADDR16:
6252 case R_PPC64_UADDR32:
6253 case R_PPC64_UADDR64:
6254 case R_PPC64_TOC:
6255 break;
6256 }
6257
6258 if (local_syms != NULL)
6259 {
6260 unsigned long r_symndx;
6261 Elf_Internal_Sym *sym;
6262 bfd *ibfd = sec->owner;
6263
6264 r_symndx = ELF64_R_SYM (r_info);
6265 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6266 return FALSE;
6267 }
6268
6269 if ((info->shared
6270 && (MUST_BE_DYN_RELOC (r_type)
6271 || (h != NULL
6272 && (!info->symbolic
6273 || h->root.type == bfd_link_hash_defweak
6274 || !h->def_regular))))
6275 || (ELIMINATE_COPY_RELOCS
6276 && !info->shared
6277 && h != NULL
6278 && (h->root.type == bfd_link_hash_defweak
6279 || !h->def_regular)))
6280 ;
6281 else
6282 return TRUE;
6283
6284 if (h != NULL)
6285 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6286 else
6edfbbad 6287 {
60124e18
AM
6288 if (sym_sec != NULL)
6289 {
6290 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6291 pp = (struct ppc_dyn_relocs **) vpp;
6292 }
6293 else
6294 {
6295 void *vpp = &elf_section_data (sec)->local_dynrel;
6296 pp = (struct ppc_dyn_relocs **) vpp;
6297 }
6298
6299 /* elf_gc_sweep may have already removed all dyn relocs associated
6300 with local syms for a given section. Don't report a dynreloc
6301 miscount. */
6302 if (*pp == NULL)
6303 return TRUE;
6edfbbad 6304 }
8c1d1bb8
AM
6305
6306 while ((p = *pp) != NULL)
6307 {
6308 if (p->sec == sec)
6309 {
6310 if (!MUST_BE_DYN_RELOC (r_type))
6311 p->pc_count -= 1;
6312 p->count -= 1;
6313 if (p->count == 0)
6314 *pp = p->next;
6315 return TRUE;
6316 }
6317 pp = &p->next;
6318 }
6319
6320 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6321 sec->owner, sec);
6322 bfd_set_error (bfd_error_bad_value);
6323 return FALSE;
6324}
6325
754021d0
AM
6326/* Remove unused Official Procedure Descriptor entries. Currently we
6327 only remove those associated with functions in discarded link-once
6328 sections, or weakly defined functions that have been overridden. It
6329 would be possible to remove many more entries for statically linked
6330 applications. */
6331
b34976b6 6332bfd_boolean
3f764659
JJ
6333ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6334 bfd_boolean non_overlapping)
1e2f5b6e
AM
6335{
6336 bfd *ibfd;
754021d0 6337 bfd_boolean some_edited = FALSE;
3f764659 6338 asection *need_pad = NULL;
1e2f5b6e 6339
411e1bfb 6340 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM
6341 {
6342 asection *sec;
6343 Elf_Internal_Rela *relstart, *rel, *relend;
6344 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6345 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM
6346 struct elf_link_hash_entry **sym_hashes;
6347 bfd_vma offset;
74f0fb50 6348 struct _opd_sec_data *opd;
3f764659
JJ
6349 bfd_boolean need_edit, add_aux_fields;
6350 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM
6351
6352 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6353 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM
6354 continue;
6355
4b85d634
AM
6356 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6357 continue;
6358
1e2f5b6e
AM
6359 if (sec->output_section == bfd_abs_section_ptr)
6360 continue;
6361
6362 /* Look through the section relocs. */
6363 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6364 continue;
6365
6cdc0ccc 6366 local_syms = NULL;
0ffa91dd 6367 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM
6368 sym_hashes = elf_sym_hashes (ibfd);
6369
6370 /* Read the relocations. */
4ce794b7 6371 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6372 info->keep_memory);
1e2f5b6e 6373 if (relstart == NULL)
b34976b6 6374 return FALSE;
1e2f5b6e
AM
6375
6376 /* First run through the relocs to check they are sane, and to
6377 determine whether we need to edit this opd section. */
b34976b6 6378 need_edit = FALSE;
3f764659 6379 need_pad = sec;
1e2f5b6e
AM
6380 offset = 0;
6381 relend = relstart + sec->reloc_count;
50bc7936 6382 for (rel = relstart; rel < relend; )
1e2f5b6e 6383 {
04c9666a 6384 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM
6385 unsigned long r_symndx;
6386 asection *sym_sec;
6387 struct elf_link_hash_entry *h;
6388 Elf_Internal_Sym *sym;
6389
3f764659 6390 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM
6391 only interested in the reloc pointing to a function entry
6392 point. */
50bc7936
AM
6393 if (rel->r_offset != offset
6394 || rel + 1 >= relend
6395 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM
6396 {
6397 /* If someone messes with .opd alignment then after a
6398 "ld -r" we might have padding in the middle of .opd.
6399 Also, there's nothing to prevent someone putting
6400 something silly in .opd with the assembler. No .opd
b34976b6 6401 optimization for them! */
3f764659 6402 broken_opd:
1e2f5b6e 6403 (*_bfd_error_handler)
d003868e 6404 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6405 need_edit = FALSE;
1e2f5b6e
AM
6406 break;
6407 }
6408
50bc7936
AM
6409 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6410 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6411 {
6412 (*_bfd_error_handler)
d003868e
AM
6413 (_("%B: unexpected reloc type %u in .opd section"),
6414 ibfd, r_type);
50bc7936
AM
6415 need_edit = FALSE;
6416 break;
6417 }
6418
1e2f5b6e 6419 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM
6420 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6421 r_symndx, ibfd))
50bc7936 6422 goto error_ret;
1e2f5b6e
AM
6423
6424 if (sym_sec == NULL || sym_sec->owner == NULL)
6425 {
411e1bfb
AM
6426 const char *sym_name;
6427 if (h != NULL)
6428 sym_name = h->root.root.string;
6429 else
26c61ae5
L
6430 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6431 sym_sec);
411e1bfb 6432
1e2f5b6e 6433 (*_bfd_error_handler)
d003868e
AM
6434 (_("%B: undefined sym `%s' in .opd section"),
6435 ibfd, sym_name);
b34976b6 6436 need_edit = FALSE;
1e2f5b6e
AM
6437 break;
6438 }
6439
51020317
AM
6440 /* opd entries are always for functions defined in the
6441 current input bfd. If the symbol isn't defined in the
6442 input bfd, then we won't be using the function in this
6443 bfd; It must be defined in a linkonce section in another
6444 bfd, or is weak. It's also possible that we are
6445 discarding the function due to a linker script /DISCARD/,
6446 which we test for via the output_section. */
6447 if (sym_sec->owner != ibfd
6448 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6449 need_edit = TRUE;
1e2f5b6e 6450
50bc7936 6451 rel += 2;
3f764659
JJ
6452 if (rel == relend
6453 || (rel + 1 == relend && rel->r_offset == offset + 16))
6454 {
6455 if (sec->size == offset + 24)
6456 {
6457 need_pad = NULL;
6458 break;
6459 }
6460 if (rel == relend && sec->size == offset + 16)
6461 {
6462 cnt_16b++;
6463 break;
6464 }
6465 goto broken_opd;
6466 }
6467
6468 if (rel->r_offset == offset + 24)
6469 offset += 24;
6470 else if (rel->r_offset != offset + 16)
6471 goto broken_opd;
6472 else if (rel + 1 < relend
6473 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6474 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6475 {
6476 offset += 16;
6477 cnt_16b++;
6478 }
6479 else if (rel + 2 < relend
6480 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6481 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6482 {
6483 offset += 24;
6484 rel += 1;
6485 }
6486 else
6487 goto broken_opd;
1e2f5b6e
AM
6488 }
6489
3f764659
JJ
6490 add_aux_fields = non_overlapping && cnt_16b > 0;
6491
6492 if (need_edit || add_aux_fields)
1e2f5b6e
AM
6493 {
6494 Elf_Internal_Rela *write_rel;
6495 bfd_byte *rptr, *wptr;
3f764659 6496 bfd_byte *new_contents = NULL;
b34976b6 6497 bfd_boolean skip;
3f764659 6498 long opd_ent_size;
74f0fb50
AM
6499 bfd_size_type amt;
6500
6501 amt = sec->size * sizeof (long) / 8;
6502 opd = &ppc64_elf_section_data (sec)->u.opd;
6503 opd->adjust = bfd_zalloc (obfd, amt);
6504 if (opd->adjust == NULL)
6505 return FALSE;
6506 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM
6507
6508 /* This seems a waste of time as input .opd sections are all
6509 zeros as generated by gcc, but I suppose there's no reason
6510 this will always be so. We might start putting something in
6511 the third word of .opd entries. */
6512 if ((sec->flags & SEC_IN_MEMORY) == 0)
6513 {
eea6121a
AM
6514 bfd_byte *loc;
6515 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6516 {
eea6121a
AM
6517 if (loc != NULL)
6518 free (loc);
50bc7936 6519 error_ret:
6cdc0ccc
AM
6520 if (local_syms != NULL
6521 && symtab_hdr->contents != (unsigned char *) local_syms)
6522 free (local_syms);
6cdc0ccc
AM
6523 if (elf_section_data (sec)->relocs != relstart)
6524 free (relstart);
b34976b6 6525 return FALSE;
6cdc0ccc 6526 }
1e2f5b6e
AM
6527 sec->contents = loc;
6528 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6529 }
6530
6531 elf_section_data (sec)->relocs = relstart;
6532
3f764659 6533 new_contents = sec->contents;
3f764659
JJ
6534 if (add_aux_fields)
6535 {
6536 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6537 if (new_contents == NULL)
6538 return FALSE;
6539 need_pad = FALSE;
3f764659 6540 }
b4f4e59f
AM
6541 wptr = new_contents;
6542 rptr = sec->contents;
3f764659 6543
1e2f5b6e 6544 write_rel = relstart;
b34976b6 6545 skip = FALSE;
1e2f5b6e 6546 offset = 0;
3f764659 6547 opd_ent_size = 0;
1e2f5b6e
AM
6548 for (rel = relstart; rel < relend; rel++)
6549 {
50bc7936
AM
6550 unsigned long r_symndx;
6551 asection *sym_sec;
6552 struct elf_link_hash_entry *h;
6553 Elf_Internal_Sym *sym;
6554
6555 r_symndx = ELF64_R_SYM (rel->r_info);
6556 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6557 r_symndx, ibfd))
50bc7936
AM
6558 goto error_ret;
6559
1e2f5b6e
AM
6560 if (rel->r_offset == offset)
6561 {
50bc7936 6562 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ
6563
6564 /* See if the .opd entry is full 24 byte or
6565 16 byte (with fd_aux entry overlapped with next
6566 fd_func). */
6567 opd_ent_size = 24;
6568 if ((rel + 2 == relend && sec->size == offset + 16)
6569 || (rel + 3 < relend
6570 && rel[2].r_offset == offset + 16
6571 && rel[3].r_offset == offset + 24
6572 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6573 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6574 opd_ent_size = 16;
6575
4025353c
AM
6576 if (h != NULL
6577 && h->root.root.string[0] == '.')
c4f68ce3
AM
6578 {
6579 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6580 ppc_hash_table (info));
6581 if (fdh != NULL
6582 && fdh->elf.root.type != bfd_link_hash_defined
6583 && fdh->elf.root.type != bfd_link_hash_defweak)
6584 fdh = NULL;
6585 }
1e2f5b6e 6586
51020317
AM
6587 skip = (sym_sec->owner != ibfd
6588 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM
6589 if (skip)
6590 {
4025353c 6591 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM
6592 {
6593 /* Arrange for the function descriptor sym
6594 to be dropped. */
d6fe2dc1
AM
6595 fdh->elf.root.u.def.value = 0;
6596 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6597 }
74f0fb50 6598 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM
6599 }
6600 else
1e2f5b6e
AM
6601 {
6602 /* We'll be keeping this opd entry. */
6603
4025353c 6604 if (fdh != NULL)
1e2f5b6e 6605 {
754021d0
AM
6606 /* Redefine the function descriptor symbol to
6607 this location in the opd section. It is
6608 necessary to update the value here rather
6609 than using an array of adjustments as we do
6610 for local symbols, because various places
6611 in the generic ELF code use the value
6612 stored in u.def.value. */
3f764659 6613 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6614 fdh->adjust_done = 1;
1e2f5b6e 6615 }
754021d0
AM
6616
6617 /* Local syms are a bit tricky. We could
6618 tweak them as they can be cached, but
6619 we'd need to look through the local syms
6620 for the function descriptor sym which we
6621 don't have at the moment. So keep an
6622 array of adjustments. */
74f0fb50 6623 opd->adjust[rel->r_offset / 8]
3f764659 6624 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM
6625
6626 if (wptr != rptr)
3f764659
JJ
6627 memcpy (wptr, rptr, opd_ent_size);
6628 wptr += opd_ent_size;
6629 if (add_aux_fields && opd_ent_size == 16)
6630 {
6631 memset (wptr, '\0', 8);
6632 wptr += 8;
6633 }
1e2f5b6e 6634 }
3f764659
JJ
6635 rptr += opd_ent_size;
6636 offset += opd_ent_size;
1e2f5b6e
AM
6637 }
6638
50bc7936
AM
6639 if (skip)
6640 {
60124e18
AM
6641 if (!NO_OPD_RELOCS
6642 && !info->relocatable
18d944df
AM
6643 && !dec_dynrel_count (rel->r_info, sec, info,
6644 NULL, h, sym_sec))
8c1d1bb8 6645 goto error_ret;
50bc7936
AM
6646 }
6647 else
1e2f5b6e 6648 {
50bc7936
AM
6649 /* We need to adjust any reloc offsets to point to the
6650 new opd entries. While we're at it, we may as well
6651 remove redundant relocs. */
74f0fb50 6652 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM
6653 if (write_rel != rel)
6654 memcpy (write_rel, rel, sizeof (*rel));
6655 ++write_rel;
6656 }
6657 }
6658
3f764659 6659 sec->size = wptr - new_contents;
1e2f5b6e 6660 sec->reloc_count = write_rel - relstart;
3f764659
JJ
6661 if (add_aux_fields)
6662 {
6663 free (sec->contents);
6664 sec->contents = new_contents;
6665 }
6666
05bf9422 6667 /* Fudge the header size too, as this is used later in
cdcf6e38
AM
6668 elf_bfd_final_link if we are emitting relocs. */
6669 elf_section_data (sec)->rel_hdr.sh_size
6670 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6671 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6672 some_edited = TRUE;
1e2f5b6e 6673 }
6cdc0ccc 6674 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6675 free (relstart);
6cdc0ccc 6676
411e1bfb
AM
6677 if (local_syms != NULL
6678 && symtab_hdr->contents != (unsigned char *) local_syms)
6679 {
6680 if (!info->keep_memory)
6681 free (local_syms);
6682 else
6683 symtab_hdr->contents = (unsigned char *) local_syms;
6684 }
6685 }
6686
754021d0
AM
6687 if (some_edited)
6688 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6689
3f764659
JJ
6690 /* If we are doing a final link and the last .opd entry is just 16 byte
6691 long, add a 8 byte padding after it. */
6692 if (need_pad != NULL && !info->relocatable)
6693 {
6694 bfd_byte *p;
6695
6696 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6697 {
6698 BFD_ASSERT (need_pad->size > 0);
6699
6700 p = bfd_malloc (need_pad->size + 8);
6701 if (p == NULL)
6702 return FALSE;
699733f6 6703
3f764659
JJ
6704 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6705 p, 0, need_pad->size))
6706 return FALSE;
6707
6708 need_pad->contents = p;
6709 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6710 }
6711 else
6712 {
6713 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6714 if (p == NULL)
6715 return FALSE;
6716
6717 need_pad->contents = p;
6718 }
6719
6720 memset (need_pad->contents + need_pad->size, 0, 8);
6721 need_pad->size += 8;
6722 }
6723
411e1bfb
AM
6724 return TRUE;
6725}
6726
e1918d23 6727/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6728
e1918d23 6729asection *
4ce794b7 6730ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6731{
411e1bfb
AM
6732 struct ppc_link_hash_table *htab;
6733
411e1bfb 6734 htab = ppc_hash_table (info);
a48ebf4d
AM
6735 if (htab->tls_get_addr != NULL)
6736 {
8387904d 6737 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6738
8387904d
AM
6739 while (h->elf.root.type == bfd_link_hash_indirect
6740 || h->elf.root.type == bfd_link_hash_warning)
6741 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM
6742
6743 htab->tls_get_addr = h;
8387904d
AM
6744
6745 if (htab->tls_get_addr_fd == NULL
6746 && h->oh != NULL
c4f68ce3
AM
6747 && h->oh->is_func_descriptor
6748 && (h->oh->elf.root.type == bfd_link_hash_defined
6749 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM
6750 htab->tls_get_addr_fd = h->oh;
6751 }
6752
6753 if (htab->tls_get_addr_fd != NULL)
6754 {
6755 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6756
6757 while (h->elf.root.type == bfd_link_hash_indirect
6758 || h->elf.root.type == bfd_link_hash_warning)
6759 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6760
6761 htab->tls_get_addr_fd = h;
a48ebf4d
AM
6762 }
6763
e1918d23 6764 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6765}
411e1bfb 6766
951fd09b
AM
6767/* Run through all the TLS relocs looking for optimization
6768 opportunities. The linker has been hacked (see ppc64elf.em) to do
6769 a preliminary section layout so that we know the TLS segment
6770 offsets. We can't optimize earlier because some optimizations need
6771 to know the tp offset, and we need to optimize before allocating
6772 dynamic relocations. */
6773
6774bfd_boolean
4ce794b7 6775ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM
6776{
6777 bfd *ibfd;
6778 asection *sec;
6779 struct ppc_link_hash_table *htab;
102890f0 6780 int pass;
951fd09b 6781
1049f94e 6782 if (info->relocatable || info->shared)
411e1bfb
AM
6783 return TRUE;
6784
951fd09b 6785 htab = ppc_hash_table (info);
411e1bfb
AM
6786 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6787 {
6788 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM
6789 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6790 unsigned char *toc_ref = NULL;
411e1bfb 6791
102890f0
AM
6792 /* Look at all the sections for this file. Make two passes over
6793 the relocs. On the first pass, mark toc entries involved
6794 with tls relocs, and check that tls relocs involved in
6795 setting up a tls_get_addr call are indeed followed by such a
6796 call. If they are not, exclude them from the optimizations
6797 done on the second pass. */
6798 for (pass = 0; pass < 2; ++pass)
6799 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6800 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6801 {
6802 Elf_Internal_Rela *relstart, *rel, *relend;
411e1bfb 6803
102890f0
AM
6804 /* Read the relocations. */
6805 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6806 info->keep_memory);
6807 if (relstart == NULL)
6808 return FALSE;
411e1bfb 6809
102890f0
AM
6810 relend = relstart + sec->reloc_count;
6811 for (rel = relstart; rel < relend; rel++)
6812 {
6813 enum elf_ppc64_reloc_type r_type;
6814 unsigned long r_symndx;
6815 struct elf_link_hash_entry *h;
6816 Elf_Internal_Sym *sym;
6817 asection *sym_sec;
6818 char *tls_mask;
6819 char tls_set, tls_clear, tls_type = 0;
6820 bfd_vma value;
6821 bfd_boolean ok_tprel, is_local;
6822 long toc_ref_index = 0;
6823 int expecting_tls_get_addr = 0;
411e1bfb 6824
102890f0
AM
6825 r_symndx = ELF64_R_SYM (rel->r_info);
6826 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6827 r_symndx, ibfd))
6828 {
6829 err_free_rel:
6830 if (elf_section_data (sec)->relocs != relstart)
6831 free (relstart);
6832 if (toc_ref != NULL)
6833 free (toc_ref);
6834 if (locsyms != NULL
0ffa91dd 6835 && (elf_symtab_hdr (ibfd).contents
102890f0
AM
6836 != (unsigned char *) locsyms))
6837 free (locsyms);
6838 return FALSE;
6839 }
411e1bfb 6840
102890f0
AM
6841 if (h != NULL)
6842 {
6843 if (h->root.type != bfd_link_hash_defined
6844 && h->root.type != bfd_link_hash_defweak)
6845 continue;
6846 value = h->root.u.def.value;
6847 }
6848 else
6849 /* Symbols referenced by TLS relocs must be of type
6850 STT_TLS. So no need for .opd local sym adjust. */
6851 value = sym->st_value;
6852
6853 ok_tprel = FALSE;
6854 is_local = FALSE;
6855 if (h == NULL
6856 || !h->def_dynamic)
6857 {
6858 is_local = TRUE;
6859 value += sym_sec->output_offset;
6860 value += sym_sec->output_section->vma;
6861 value -= htab->elf.tls_sec->vma;
6862 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6863 < (bfd_vma) 1 << 32);
6864 }
951fd09b 6865
102890f0
AM
6866 r_type = ELF64_R_TYPE (rel->r_info);
6867 switch (r_type)
6868 {
6869 case R_PPC64_GOT_TLSLD16:
6870 case R_PPC64_GOT_TLSLD16_LO:
6871 expecting_tls_get_addr = 1;
6872 /* Fall thru */
6873
6874 case R_PPC64_GOT_TLSLD16_HI:
6875 case R_PPC64_GOT_TLSLD16_HA:
6876 /* These relocs should never be against a symbol
6877 defined in a shared lib. Leave them alone if
6878 that turns out to be the case. */
6879 if (!is_local)
6880 continue;
411e1bfb 6881
102890f0 6882 /* LD -> LE */
411e1bfb 6883 tls_set = 0;
102890f0
AM
6884 tls_clear = TLS_LD;
6885 tls_type = TLS_TLS | TLS_LD;
6886 break;
411e1bfb 6887
102890f0
AM
6888 case R_PPC64_GOT_TLSGD16:
6889 case R_PPC64_GOT_TLSGD16_LO:
6890 expecting_tls_get_addr = 1;
6891 /* Fall thru */
6892
6893 case R_PPC64_GOT_TLSGD16_HI:
6894 case R_PPC64_GOT_TLSGD16_HA:
6895 if (ok_tprel)
6896 /* GD -> LE */
411e1bfb 6897 tls_set = 0;
102890f0
AM
6898 else
6899 /* GD -> IE */
6900 tls_set = TLS_TLS | TLS_TPRELGD;
6901 tls_clear = TLS_GD;
6902 tls_type = TLS_TLS | TLS_GD;
6903 break;
6904
6905 case R_PPC64_GOT_TPREL16_DS:
6906 case R_PPC64_GOT_TPREL16_LO_DS:
6907 case R_PPC64_GOT_TPREL16_HI:
6908 case R_PPC64_GOT_TPREL16_HA:
6909 if (ok_tprel)
6910 {
6911 /* IE -> LE */
6912 tls_set = 0;
6913 tls_clear = TLS_TPREL;
6914 tls_type = TLS_TLS | TLS_TPREL;
6915 break;
6916 }
411e1bfb
AM
6917 continue;
6918
102890f0
AM
6919 case R_PPC64_TOC16:
6920 case R_PPC64_TOC16_LO:
6921 case R_PPC64_TLS:
6922 if (sym_sec == NULL || sym_sec != toc)
6923 continue;
6924
6925 /* Mark this toc entry as referenced by a TLS
6926 code sequence. We can do that now in the
6927 case of R_PPC64_TLS, and after checking for
6928 tls_get_addr for the TOC16 relocs. */
6929 if (toc_ref == NULL)
6930 {
6931 toc_ref = bfd_zmalloc (toc->size / 8);
6932 if (toc_ref == NULL)
6933 goto err_free_rel;
6934 }
6935 if (h != NULL)
6936 value = h->root.u.def.value;
6937 else
6938 value = sym->st_value;
6939 value += rel->r_addend;
6940 BFD_ASSERT (value < toc->size && value % 8 == 0);
6941 toc_ref_index = value / 8;
6942 if (r_type == R_PPC64_TLS)
6943 {
6944 toc_ref[toc_ref_index] = 1;
6945 continue;
6946 }
6947
6948 if (pass != 0 && toc_ref[toc_ref_index] == 0)
6949 continue;
6950
6951 tls_set = 0;
6952 tls_clear = 0;
6953 expecting_tls_get_addr = 2;
6954 break;
6955
6956 case R_PPC64_TPREL64:
6957 if (pass == 0
6958 || sec != toc
6959 || toc_ref == NULL
6960 || !toc_ref[rel->r_offset / 8])
6961 continue;
6962 if (ok_tprel)
6963 {
6964 /* IE -> LE */
6965 tls_set = TLS_EXPLICIT;
6966 tls_clear = TLS_TPREL;
6967 break;
6968 }
6969 continue;
6970
6971 case R_PPC64_DTPMOD64:
6972 if (pass == 0
6973 || sec != toc
6974 || toc_ref == NULL
6975 || !toc_ref[rel->r_offset / 8])
6976 continue;
6977 if (rel + 1 < relend
6978 && (rel[1].r_info
6979 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6980 && rel[1].r_offset == rel->r_offset + 8)
6981 {
6982 if (ok_tprel)
6983 /* GD -> LE */
6984 tls_set = TLS_EXPLICIT | TLS_GD;
6985 else
6986 /* GD -> IE */
6987 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6988 tls_clear = TLS_GD;
6989 }
6990 else
6991 {
6992 if (!is_local)
6993 continue;
6994
6995 /* LD -> LE */
6996 tls_set = TLS_EXPLICIT;
6997 tls_clear = TLS_LD;
6998 }
6999 break;
7000
7001 default:
7002 continue;
7003 }
7004
7005 if (pass == 0)
7006 {
7007 if (!expecting_tls_get_addr)
7008 continue;
7009
7010 if (rel + 1 < relend)
7011 {
7012 Elf_Internal_Shdr *symtab_hdr;
7013 enum elf_ppc64_reloc_type r_type2;
7014 unsigned long r_symndx2;
7015 struct elf_link_hash_entry *h2;
7016
0ffa91dd 7017 symtab_hdr = &elf_symtab_hdr (ibfd);
102890f0
AM
7018
7019 /* The next instruction should be a call to
7020 __tls_get_addr. Peek at the reloc to be sure. */
7021 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7022 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7023 if (r_symndx2 >= symtab_hdr->sh_info
7024 && (r_type2 == R_PPC64_REL14
7025 || r_type2 == R_PPC64_REL14_BRTAKEN
7026 || r_type2 == R_PPC64_REL14_BRNTAKEN
7027 || r_type2 == R_PPC64_REL24))
7028 {
7029 struct elf_link_hash_entry **sym_hashes;
7030
7031 sym_hashes = elf_sym_hashes (ibfd);
7032
7033 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7034 while (h2->root.type == bfd_link_hash_indirect
7035 || h2->root.type == bfd_link_hash_warning)
7036 h2 = ((struct elf_link_hash_entry *)
7037 h2->root.u.i.link);
7038 if (h2 != NULL
7039 && (h2 == &htab->tls_get_addr->elf
7040 || h2 == &htab->tls_get_addr_fd->elf))
7041 {
7042 if (expecting_tls_get_addr == 2)
7043 {
7044 /* Check for toc tls entries. */
7045 char *toc_tls;
7046 int retval;
7047
7048 retval = get_tls_mask (&toc_tls, NULL,
7049 &locsyms,
7050 rel, ibfd);
7051 if (retval == 0)
7052 goto err_free_rel;
7053 if (retval > 1 && toc_tls != NULL)
7054 toc_ref[toc_ref_index] = 1;
7055 }
7056 continue;
7057 }
7058 }
7059 }
7060
7061 if (expecting_tls_get_addr != 1)
7062 continue;
7063
7064 /* Uh oh, we didn't find the expected call. We
7065 could just mark this symbol to exclude it
7066 from tls optimization but it's safer to skip
7067 the entire section. */
7068 sec->has_tls_reloc = 0;
7069 break;
7070 }
7071
85f7a9cb 7072 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM
7073 {
7074 struct plt_entry *ent;
7075 for (ent = htab->tls_get_addr->elf.plt.plist;
7076 ent != NULL;
7077 ent = ent->next)
7078 if (ent->addend == 0)
411e1bfb 7079 {
102890f0 7080 if (ent->plt.refcount > 0)
30038c59 7081 {
102890f0
AM
7082 ent->plt.refcount -= 1;
7083 expecting_tls_get_addr = 0;
30038c59 7084 }
102890f0 7085 break;
411e1bfb 7086 }
102890f0 7087 }
411e1bfb 7088
85f7a9cb 7089 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM
7090 {
7091 struct plt_entry *ent;
7092 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7093 ent != NULL;
7094 ent = ent->next)
7095 if (ent->addend == 0)
411e1bfb 7096 {
102890f0
AM
7097 if (ent->plt.refcount > 0)
7098 ent->plt.refcount -= 1;
7099 break;
411e1bfb 7100 }
102890f0 7101 }
411e1bfb 7102
102890f0 7103 if (tls_clear == 0)
30038c59
AM
7104 continue;
7105
102890f0
AM
7106 if ((tls_set & TLS_EXPLICIT) == 0)
7107 {
7108 struct got_entry *ent;
411e1bfb 7109
102890f0
AM
7110 /* Adjust got entry for this reloc. */
7111 if (h != NULL)
7112 ent = h->got.glist;
7113 else
7114 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7115
102890f0
AM
7116 for (; ent != NULL; ent = ent->next)
7117 if (ent->addend == rel->r_addend
7118 && ent->owner == ibfd
7119 && ent->tls_type == tls_type)
7120 break;
7121 if (ent == NULL)
7122 abort ();
411e1bfb 7123
102890f0
AM
7124 if (tls_set == 0)
7125 {
7126 /* We managed to get rid of a got entry. */
7127 if (ent->got.refcount > 0)
7128 ent->got.refcount -= 1;
7129 }
7130 }
7131 else
7132 {
7133 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7134 we'll lose one or two dyn relocs. */
7135 if (!dec_dynrel_count (rel->r_info, sec, info,
7136 NULL, h, sym_sec))
7137 return FALSE;
411e1bfb 7138
102890f0
AM
7139 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7140 {
7141 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7142 NULL, h, sym_sec))
7143 return FALSE;
7144 }
7145 }
411e1bfb 7146
102890f0
AM
7147 *tls_mask |= tls_set;
7148 *tls_mask &= ~tls_clear;
7149 }
8c1d1bb8 7150
102890f0
AM
7151 if (elf_section_data (sec)->relocs != relstart)
7152 free (relstart);
7153 }
411e1bfb 7154
102890f0
AM
7155 if (toc_ref != NULL)
7156 free (toc_ref);
411e1bfb 7157
102890f0 7158 if (locsyms != NULL
0ffa91dd 7159 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
102890f0
AM
7160 {
7161 if (!info->keep_memory)
7162 free (locsyms);
7163 else
0ffa91dd 7164 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
411e1bfb 7165 }
102890f0 7166 }
b34976b6 7167 return TRUE;
1e2f5b6e 7168}
b34976b6 7169
c5614fa4
AM
7170/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7171 the values of any global symbols in a toc section that has been
7172 edited. Globals in toc sections should be a rarity, so this function
7173 sets a flag if any are found in toc sections other than the one just
7174 edited, so that futher hash table traversals can be avoided. */
7175
7176struct adjust_toc_info
7177{
7178 asection *toc;
7179 unsigned long *skip;
7180 bfd_boolean global_toc_syms;
7181};
7182
7183static bfd_boolean
7184adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7185{
7186 struct ppc_link_hash_entry *eh;
7187 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7188
7189 if (h->root.type == bfd_link_hash_indirect)
7190 return TRUE;
7191
7192 if (h->root.type == bfd_link_hash_warning)
7193 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7194
7195 if (h->root.type != bfd_link_hash_defined
7196 && h->root.type != bfd_link_hash_defweak)
7197 return TRUE;
7198
7199 eh = (struct ppc_link_hash_entry *) h;
7200 if (eh->adjust_done)
7201 return TRUE;
7202
7203 if (eh->elf.root.u.def.section == toc_inf->toc)
7204 {
7205 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7206 if (skip != (unsigned long) -1)
7207 eh->elf.root.u.def.value -= skip;
7208 else
7209 {
7210 (*_bfd_error_handler)
7211 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7212 eh->elf.root.u.def.section = &bfd_abs_section;
7213 eh->elf.root.u.def.value = 0;
7214 }
7215 eh->adjust_done = 1;
7216 }
7217 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7218 toc_inf->global_toc_syms = TRUE;
7219
7220 return TRUE;
7221}
7222
7223/* Examine all relocs referencing .toc sections in order to remove
7224 unused .toc entries. */
7225
7226bfd_boolean
7227ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7228{
7229 bfd *ibfd;
7230 struct adjust_toc_info toc_inf;
7231
7232 toc_inf.global_toc_syms = TRUE;
7233 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7234 {
7235 asection *toc, *sec;
7236 Elf_Internal_Shdr *symtab_hdr;
7237 Elf_Internal_Sym *local_syms;
7238 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7239 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM
7240 unsigned long *skip, *drop;
7241 unsigned char *used;
7242 unsigned char *keep, last, some_unused;
7243
7244 toc = bfd_get_section_by_name (ibfd, ".toc");
7245 if (toc == NULL
92b7a70f 7246 || toc->size == 0
c5614fa4
AM
7247 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7248 || elf_discarded_section (toc))
7249 continue;
7250
7251 local_syms = NULL;
0ffa91dd 7252 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM
7253 sym_hashes = elf_sym_hashes (ibfd);
7254
7255 /* Look at sections dropped from the final link. */
7256 skip = NULL;
7257 relstart = NULL;
7258 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7259 {
7260 if (sec->reloc_count == 0
7261 || !elf_discarded_section (sec)
7262 || get_opd_info (sec)
7263 || (sec->flags & SEC_ALLOC) == 0
7264 || (sec->flags & SEC_DEBUGGING) != 0)
7265 continue;
7266
7267 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7268 if (relstart == NULL)
7269 goto error_ret;
7270
7271 /* Run through the relocs to see which toc entries might be
7272 unused. */
7273 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7274 {
7275 enum elf_ppc64_reloc_type r_type;
7276 unsigned long r_symndx;
7277 asection *sym_sec;
7278 struct elf_link_hash_entry *h;
7279 Elf_Internal_Sym *sym;
7280 bfd_vma val;
7281
7282 r_type = ELF64_R_TYPE (rel->r_info);
7283 switch (r_type)
7284 {
7285 default:
7286 continue;
7287
7288 case R_PPC64_TOC16:
7289 case R_PPC64_TOC16_LO:
7290 case R_PPC64_TOC16_HI:
7291 case R_PPC64_TOC16_HA:
7292 case R_PPC64_TOC16_DS:
7293 case R_PPC64_TOC16_LO_DS:
7294 break;
7295 }
7296
7297 r_symndx = ELF64_R_SYM (rel->r_info);
7298 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7299 r_symndx, ibfd))
7300 goto error_ret;
7301
7302 if (sym_sec != toc)
7303 continue;
7304
7305 if (h != NULL)
7306 val = h->root.u.def.value;
7307 else
7308 val = sym->st_value;
7309 val += rel->r_addend;
7310
7311 if (val >= toc->size)
7312 continue;
7313
7314 /* Anything in the toc ought to be aligned to 8 bytes.
7315 If not, don't mark as unused. */
7316 if (val & 7)
7317 continue;
7318
7319 if (skip == NULL)
7320 {
7321 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7322 if (skip == NULL)
7323 goto error_ret;
7324 }
7325
7326 skip[val >> 3] = 1;
7327 }
7328
7329 if (elf_section_data (sec)->relocs != relstart)
7330 free (relstart);
7331 }
7332
7333 if (skip == NULL)
7334 continue;
7335
7336 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7337 if (used == NULL)
7338 {
7339 error_ret:
7340 if (local_syms != NULL
7341 && symtab_hdr->contents != (unsigned char *) local_syms)
7342 free (local_syms);
7343 if (sec != NULL
7344 && relstart != NULL
7345 && elf_section_data (sec)->relocs != relstart)
7346 free (relstart);
7347 if (skip != NULL)
7348 free (skip);
7349 return FALSE;
7350 }
7351
30038c59
AM
7352 /* Now check all kept sections that might reference the toc.
7353 Check the toc itself last. */
7354 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7355 : ibfd->sections);
c5614fa4 7356 sec != NULL;
c5614fa4 7357 sec = (sec == toc ? NULL
c5614fa4 7358 : sec->next == NULL ? toc
30038c59 7359 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM
7360 : sec->next))
7361 {
7362 int repeat;
7363
7364 if (sec->reloc_count == 0
7365 || elf_discarded_section (sec)
7366 || get_opd_info (sec)
7367 || (sec->flags & SEC_ALLOC) == 0
7368 || (sec->flags & SEC_DEBUGGING) != 0)
7369 continue;
7370
7371 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7372 if (relstart == NULL)
7373 goto error_ret;
7374
7375 /* Mark toc entries referenced as used. */
7376 repeat = 0;
7377 do
7378 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7379 {
7380 enum elf_ppc64_reloc_type r_type;
7381 unsigned long r_symndx;
7382 asection *sym_sec;
7383 struct elf_link_hash_entry *h;
7384 Elf_Internal_Sym *sym;
7385 bfd_vma val;
7386
7387 r_type = ELF64_R_TYPE (rel->r_info);
7388 switch (r_type)
7389 {
7390 case R_PPC64_TOC16:
7391 case R_PPC64_TOC16_LO:
7392 case R_PPC64_TOC16_HI:
7393 case R_PPC64_TOC16_HA:
7394 case R_PPC64_TOC16_DS:
7395 case R_PPC64_TOC16_LO_DS:
7396 /* In case we're taking addresses of toc entries. */
7397 case R_PPC64_ADDR64:
7398 break;
7399
7400 default:
7401 continue;
7402 }
7403
7404 r_symndx = ELF64_R_SYM (rel->r_info);
7405 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7406 r_symndx, ibfd))
7407 {
7408 free (used);
7409 goto error_ret;
7410 }
7411
7412 if (sym_sec != toc)
7413 continue;
7414
7415 if (h != NULL)
7416 val = h->root.u.def.value;
7417 else
7418 val = sym->st_value;
7419 val += rel->r_addend;
7420
7421 if (val >= toc->size)
7422 continue;
7423
7424 /* For the toc section, we only mark as used if
7425 this entry itself isn't unused. */
7426 if (sec == toc
7427 && !used[val >> 3]
7428 && (used[rel->r_offset >> 3]
7429 || !skip[rel->r_offset >> 3]))
7430 /* Do all the relocs again, to catch reference
7431 chains. */
7432 repeat = 1;
7433
7434 used[val >> 3] = 1;
7435 }
7436 while (repeat);
7437 }
7438
7439 /* Merge the used and skip arrays. Assume that TOC
7440 doublewords not appearing as either used or unused belong
7441 to to an entry more than one doubleword in size. */
7442 for (drop = skip, keep = used, last = 0, some_unused = 0;
7443 drop < skip + (toc->size + 7) / 8;
7444 ++drop, ++keep)
7445 {
7446 if (*keep)
7447 {
7448 *drop = 0;
7449 last = 0;
7450 }
7451 else if (*drop)
7452 {
7453 some_unused = 1;
7454 last = 1;
7455 }
7456 else
7457 *drop = last;
7458 }
7459
7460 free (used);
7461
7462 if (some_unused)
7463 {
7464 bfd_byte *contents, *src;
7465 unsigned long off;
7466
7467 /* Shuffle the toc contents, and at the same time convert the
7468 skip array from booleans into offsets. */
7469 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7470 goto error_ret;
7471
7472 elf_section_data (toc)->this_hdr.contents = contents;
7473
7474 for (src = contents, off = 0, drop = skip;
7475 src < contents + toc->size;
7476 src += 8, ++drop)
7477 {
7478 if (*drop)
7479 {
7480 *drop = (unsigned long) -1;
7481 off += 8;
7482 }
7483 else if (off != 0)
7484 {
7485 *drop = off;
7486 memcpy (src - off, src, 8);
7487 }
7488 }
7489 toc->rawsize = toc->size;
7490 toc->size = src - contents - off;
7491
92b7a70f
AM
7492 if (toc->reloc_count != 0)
7493 {
7494 Elf_Internal_Rela *wrel;
7495 bfd_size_type sz;
c5614fa4 7496
92b7a70f
AM
7497 /* Read toc relocs. */
7498 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7499 TRUE);
7500 if (relstart == NULL)
7501 goto error_ret;
7502
7503 /* Remove unused toc relocs, and adjust those we keep. */
7504 wrel = relstart;
7505 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7506 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7507 {
7508 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7509 wrel->r_info = rel->r_info;
7510 wrel->r_addend = rel->r_addend;
7511 ++wrel;
7512 }
8c1d1bb8
AM
7513 else if (!dec_dynrel_count (rel->r_info, toc, info,
7514 &local_syms, NULL, NULL))
7515 goto error_ret;
35090471 7516
92b7a70f
AM
7517 toc->reloc_count = wrel - relstart;
7518 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7519 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7520 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7521 }
c5614fa4
AM
7522
7523 /* Adjust addends for relocs against the toc section sym. */
7524 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7525 {
7526 if (sec->reloc_count == 0
7527 || elf_discarded_section (sec))
7528 continue;
7529
7530 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7531 TRUE);
7532 if (relstart == NULL)
7533 goto error_ret;
7534
7535 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7536 {
7537 enum elf_ppc64_reloc_type r_type;
7538 unsigned long r_symndx;
7539 asection *sym_sec;
7540 struct elf_link_hash_entry *h;
7541 Elf_Internal_Sym *sym;
7542
7543 r_type = ELF64_R_TYPE (rel->r_info);
7544 switch (r_type)
7545 {
7546 default:
7547 continue;
7548
7549 case R_PPC64_TOC16:
7550 case R_PPC64_TOC16_LO:
7551 case R_PPC64_TOC16_HI:
7552 case R_PPC64_TOC16_HA:
7553 case R_PPC64_TOC16_DS:
7554 case R_PPC64_TOC16_LO_DS:
7555 case R_PPC64_ADDR64:
7556 break;
7557 }
7558
7559 r_symndx = ELF64_R_SYM (rel->r_info);
7560 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7561 r_symndx, ibfd))
7562 goto error_ret;
7563
7564 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7565 continue;
7566
7567 rel->r_addend -= skip[rel->r_addend >> 3];
7568 }
7569 }
7570
7571 /* We shouldn't have local or global symbols defined in the TOC,
7572 but handle them anyway. */
7573 if (local_syms != NULL)
7574 {
7575 Elf_Internal_Sym *sym;
7576
7577 for (sym = local_syms;
7578 sym < local_syms + symtab_hdr->sh_info;
7579 ++sym)
7580 if (sym->st_shndx != SHN_UNDEF
7581 && (sym->st_shndx < SHN_LORESERVE
7582 || sym->st_shndx > SHN_HIRESERVE)
7583 && sym->st_value != 0
7584 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7585 {
7586 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7587 sym->st_value -= skip[sym->st_value >> 3];
7588 else
7589 {
7590 (*_bfd_error_handler)
7591 (_("%s defined in removed toc entry"),
26c61ae5
L
7592 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7593 NULL));
c5614fa4
AM
7594 sym->st_value = 0;
7595 sym->st_shndx = SHN_ABS;
7596 }
7597 symtab_hdr->contents = (unsigned char *) local_syms;
7598 }
7599 }
7600
7601 /* Finally, adjust any global syms defined in the toc. */
7602 if (toc_inf.global_toc_syms)
7603 {
7604 toc_inf.toc = toc;
7605 toc_inf.skip = skip;
7606 toc_inf.global_toc_syms = FALSE;
7607 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7608 &toc_inf);
7609 }
7610 }
7611
7612 if (local_syms != NULL
7613 && symtab_hdr->contents != (unsigned char *) local_syms)
7614 {
7615 if (!info->keep_memory)
7616 free (local_syms);
7617 else
7618 symtab_hdr->contents = (unsigned char *) local_syms;
7619 }
7620 free (skip);
7621 }
7622
7623 return TRUE;
7624}
7625
65f38f15
AM
7626/* Allocate space in .plt, .got and associated reloc sections for
7627 dynamic relocs. */
5bd4f169 7628
b34976b6 7629static bfd_boolean
4ce794b7 7630allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7631{
65f38f15
AM
7632 struct bfd_link_info *info;
7633 struct ppc_link_hash_table *htab;
5bd4f169 7634 asection *s;
65f38f15
AM
7635 struct ppc_link_hash_entry *eh;
7636 struct ppc_dyn_relocs *p;
411e1bfb 7637 struct got_entry *gent;
5bd4f169 7638
e92d460e 7639 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7640 return TRUE;
5bd4f169 7641
e92d460e
AM
7642 if (h->root.type == bfd_link_hash_warning)
7643 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7644
65f38f15
AM
7645 info = (struct bfd_link_info *) inf;
7646 htab = ppc_hash_table (info);
5bd4f169 7647
65f38f15 7648 if (htab->elf.dynamic_sections_created
411e1bfb 7649 && h->dynindx != -1
9c7a29a3 7650 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7651 {
411e1bfb
AM
7652 struct plt_entry *pent;
7653 bfd_boolean doneone = FALSE;
7654 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7655 if (pent->plt.refcount > 0)
7656 {
411e1bfb
AM
7657 /* If this is the first .plt entry, make room for the special
7658 first entry. */
4ce794b7 7659 s = htab->plt;
eea6121a
AM
7660 if (s->size == 0)
7661 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7662
eea6121a 7663 pent->plt.offset = s->size;
411e1bfb
AM
7664
7665 /* Make room for this entry. */
eea6121a 7666 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM
7667
7668 /* Make room for the .glink code. */
4ce794b7 7669 s = htab->glink;
eea6121a
AM
7670 if (s->size == 0)
7671 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7672 /* We need bigger stubs past index 32767. */
eea6121a
AM
7673 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7674 s->size += 4;
7675 s->size += 2*4;
411e1bfb
AM
7676
7677 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7678 s = htab->relplt;
eea6121a 7679 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
7680 doneone = TRUE;
7681 }
7682 else
7683 pent->plt.offset = (bfd_vma) -1;
7684 if (!doneone)
65f38f15 7685 {
411e1bfb 7686 h->plt.plist = NULL;
f5385ebf 7687 h->needs_plt = 0;
65f38f15
AM
7688 }
7689 }
7690 else
7691 {
411e1bfb 7692 h->plt.plist = NULL;
f5385ebf 7693 h->needs_plt = 0;
65f38f15
AM
7694 }
7695
951fd09b
AM
7696 eh = (struct ppc_link_hash_entry *) h;
7697 /* Run through the TLS GD got entries first if we're changing them
7698 to TPREL. */
e7b938ca 7699 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM
7700 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7701 if (gent->got.refcount > 0
7702 && (gent->tls_type & TLS_GD) != 0)
7703 {
7704 /* This was a GD entry that has been converted to TPREL. If
7705 there happens to be a TPREL entry we can use that one. */
7706 struct got_entry *ent;
7707 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7708 if (ent->got.refcount > 0
7709 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM
7710 && ent->addend == gent->addend
7711 && ent->owner == gent->owner)
951fd09b
AM
7712 {
7713 gent->got.refcount = 0;
7714 break;
7715 }
7716
7717 /* If not, then we'll be using our own TPREL entry. */
7718 if (gent->got.refcount != 0)
7719 gent->tls_type = TLS_TLS | TLS_TPREL;
7720 }
7721
411e1bfb
AM
7722 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7723 if (gent->got.refcount > 0)
7724 {
951fd09b
AM
7725 bfd_boolean dyn;
7726
411e1bfb 7727 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM
7728 Undefined weak syms won't yet be marked as dynamic,
7729 nor will all TLS symbols. */
411e1bfb 7730 if (h->dynindx == -1
f5385ebf 7731 && !h->forced_local)
411e1bfb 7732 {
c152c796 7733 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM
7734 return FALSE;
7735 }
65f38f15 7736
d881513a 7737 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7738 && !h->def_dynamic)
411e1bfb 7739 {
102890f0
AM
7740 ppc64_tlsld_got (gent->owner)->refcount += 1;
7741 gent->got.offset = (bfd_vma) -1;
951fd09b 7742 continue;
411e1bfb 7743 }
951fd09b 7744
0c8d6e5c 7745 if (!is_ppc64_elf (gent->owner))
0ffa91dd
NC
7746 continue;
7747
e717da7e 7748 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM
7749 gent->got.offset = s->size;
7750 s->size
d881513a 7751 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7752 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM
7753 if ((info->shared
7754 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7755 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7756 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7757 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7758 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM
7759 ? 2 * sizeof (Elf64_External_Rela)
7760 : sizeof (Elf64_External_Rela));
411e1bfb
AM
7761 }
7762 else
7763 gent->got.offset = (bfd_vma) -1;
65f38f15 7764
65f38f15 7765 if (eh->dyn_relocs == NULL)
b34976b6 7766 return TRUE;
65f38f15
AM
7767
7768 /* In the shared -Bsymbolic case, discard space allocated for
7769 dynamic pc-relative relocs against symbols which turn out to be
7770 defined in regular objects. For the normal shared case, discard
7771 space for relocs that have become local due to symbol visibility
7772 changes. */
7773
7774 if (info->shared)
7775 {
9c7a29a3
AM
7776 /* Relocs that use pc_count are those that appear on a call insn,
7777 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7778 generated via assembly. We want calls to protected symbols to
7779 resolve directly to the function rather than going via the plt.
7780 If people want function pointer comparisons to work as expected
7781 then they should avoid writing weird assembly. */
09695f56 7782 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM
7783 {
7784 struct ppc_dyn_relocs **pp;
7785
7786 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7787 {
65f38f15
AM
7788 p->count -= p->pc_count;
7789 p->pc_count = 0;
7790 if (p->count == 0)
7791 *pp = p->next;
7792 else
7793 pp = &p->next;
5bd4f169 7794 }
65f38f15 7795 }
4e795f50
AM
7796
7797 /* Also discard relocs on undefined weak syms with non-default
7798 visibility. */
cab87ef9
AM
7799 if (eh->dyn_relocs != NULL
7800 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM
7801 {
7802 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7803 eh->dyn_relocs = NULL;
7804
7805 /* Make sure this symbol is output as a dynamic symbol.
7806 Undefined weak syms won't yet be marked as dynamic. */
7807 else if (h->dynindx == -1
7808 && !h->forced_local)
7809 {
7810 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7811 return FALSE;
7812 }
7813 }
65f38f15 7814 }
f4656909 7815 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM
7816 {
7817 /* For the non-shared case, discard space for relocs against
7818 symbols which turn out to need copy relocs or are not
7819 dynamic. */
7820
f5385ebf
AM
7821 if (!h->non_got_ref
7822 && h->def_dynamic
7823 && !h->def_regular)
65f38f15
AM
7824 {
7825 /* Make sure this symbol is output as a dynamic symbol.
7826 Undefined weak syms won't yet be marked as dynamic. */
7827 if (h->dynindx == -1
f5385ebf 7828 && !h->forced_local)
65f38f15 7829 {
c152c796 7830 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7831 return FALSE;
65f38f15
AM
7832 }
7833
7834 /* If that succeeded, we know we'll be keeping all the
7835 relocs. */
7836 if (h->dynindx != -1)
7837 goto keep;
7838 }
7839
7840 eh->dyn_relocs = NULL;
7841
ec338859 7842 keep: ;
65f38f15
AM
7843 }
7844
7845 /* Finally, allocate space. */
7846 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7847 {
7848 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7849 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM
7850 }
7851
b34976b6 7852 return TRUE;
65f38f15
AM
7853}
7854
7855/* Find any dynamic relocs that apply to read-only sections. */
7856
b34976b6 7857static bfd_boolean
4ce794b7 7858readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM
7859{
7860 struct ppc_link_hash_entry *eh;
7861 struct ppc_dyn_relocs *p;
7862
e92d460e
AM
7863 if (h->root.type == bfd_link_hash_warning)
7864 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7865
65f38f15
AM
7866 eh = (struct ppc_link_hash_entry *) h;
7867 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7868 {
7869 asection *s = p->sec->output_section;
7870
7871 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7872 {
4ce794b7 7873 struct bfd_link_info *info = inf;
65f38f15
AM
7874
7875 info->flags |= DF_TEXTREL;
7876
7877 /* Not an error, just cut short the traversal. */
b34976b6 7878 return FALSE;
65f38f15
AM
7879 }
7880 }
b34976b6 7881 return TRUE;
65f38f15
AM
7882}
7883
7884/* Set the sizes of the dynamic sections. */
7885
b34976b6 7886static bfd_boolean
4ce794b7
AM
7887ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7888 struct bfd_link_info *info)
65f38f15
AM
7889{
7890 struct ppc_link_hash_table *htab;
7891 bfd *dynobj;
7892 asection *s;
b34976b6 7893 bfd_boolean relocs;
65f38f15
AM
7894 bfd *ibfd;
7895
7896 htab = ppc_hash_table (info);
7897 dynobj = htab->elf.dynobj;
7898 if (dynobj == NULL)
7899 abort ();
7900
7901 if (htab->elf.dynamic_sections_created)
7902 {
7903 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7904 if (info->executable)
65f38f15
AM
7905 {
7906 s = bfd_get_section_by_name (dynobj, ".interp");
7907 if (s == NULL)
7908 abort ();
eea6121a 7909 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM
7910 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7911 }
7912 }
7913
7914 /* Set up .got offsets for local syms, and space for local dynamic
7915 relocs. */
7916 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7917 {
411e1bfb
AM
7918 struct got_entry **lgot_ents;
7919 struct got_entry **end_lgot_ents;
e7b938ca 7920 char *lgot_masks;
65f38f15
AM
7921 bfd_size_type locsymcount;
7922 Elf_Internal_Shdr *symtab_hdr;
7923 asection *srel;
7924
0c8d6e5c 7925 if (!is_ppc64_elf (ibfd))
65f38f15
AM
7926 continue;
7927
7928 for (s = ibfd->sections; s != NULL; s = s->next)
7929 {
ec338859 7930 struct ppc_dyn_relocs *p;
65f38f15 7931
6edfbbad 7932 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 7933 {
ec338859
AM
7934 if (!bfd_is_abs_section (p->sec)
7935 && bfd_is_abs_section (p->sec->output_section))
7936 {
7937 /* Input section has been discarded, either because
7938 it is a copy of a linkonce section or due to
7939 linker script /DISCARD/, so we'll be discarding
7940 the relocs too. */
7941 }
248866a8 7942 else if (p->count != 0)
ec338859
AM
7943 {
7944 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7945 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
7946 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7947 info->flags |= DF_TEXTREL;
ec338859 7948 }
65f38f15
AM
7949 }
7950 }
7951
411e1bfb
AM
7952 lgot_ents = elf_local_got_ents (ibfd);
7953 if (!lgot_ents)
65f38f15
AM
7954 continue;
7955
0ffa91dd 7956 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 7957 locsymcount = symtab_hdr->sh_info;
411e1bfb 7958 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7959 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM
7960 s = ppc64_elf_tdata (ibfd)->got;
7961 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7962 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7963 {
411e1bfb
AM
7964 struct got_entry *ent;
7965
7966 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7967 if (ent->got.refcount > 0)
7968 {
e7b938ca 7969 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7970 {
102890f0
AM
7971 ppc64_tlsld_got (ibfd)->refcount += 1;
7972 ent->got.offset = (bfd_vma) -1;
411e1bfb
AM
7973 }
7974 else
7975 {
eea6121a 7976 ent->got.offset = s->size;
e7b938ca 7977 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7978 {
eea6121a 7979 s->size += 16;
411e1bfb 7980 if (info->shared)
eea6121a 7981 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM
7982 }
7983 else
7984 {
eea6121a 7985 s->size += 8;
411e1bfb 7986 if (info->shared)
eea6121a 7987 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
7988 }
7989 }
7990 }
7991 else
7992 ent->got.offset = (bfd_vma) -1;
65f38f15
AM
7993 }
7994 }
7995
7996 /* Allocate global sym .plt and .got entries, and space for global
7997 sym dynamic relocs. */
4ce794b7 7998 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 7999
102890f0
AM
8000 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8001 {
0c8d6e5c 8002 if (!is_ppc64_elf (ibfd))
102890f0
AM
8003 continue;
8004
8005 if (ppc64_tlsld_got (ibfd)->refcount > 0)
8006 {
8007 s = ppc64_elf_tdata (ibfd)->got;
8008 ppc64_tlsld_got (ibfd)->offset = s->size;
8009 s->size += 16;
8010 if (info->shared)
8011 {
8012 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8013 srel->size += sizeof (Elf64_External_Rela);
8014 }
8015 }
8016 else
8017 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
8018 }
8019
65f38f15
AM
8020 /* We now have determined the sizes of the various dynamic sections.
8021 Allocate memory for them. */
b34976b6 8022 relocs = FALSE;
65f38f15
AM
8023 for (s = dynobj->sections; s != NULL; s = s->next)
8024 {
8025 if ((s->flags & SEC_LINKER_CREATED) == 0)
8026 continue;
8027
4ce794b7 8028 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM
8029 /* These haven't been allocated yet; don't strip. */
8030 continue;
e717da7e
AM
8031 else if (s == htab->got
8032 || s == htab->plt
c456f082
AM
8033 || s == htab->glink
8034 || s == htab->dynbss)
65f38f15
AM
8035 {
8036 /* Strip this section if we don't need it; see the
8037 comment below. */
5bd4f169 8038 }
0112cd26 8039 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 8040 {
c456f082 8041 if (s->size != 0)
5bd4f169 8042 {
4ce794b7 8043 if (s != htab->relplt)
b34976b6 8044 relocs = TRUE;
5bd4f169
AM
8045
8046 /* We use the reloc_count field as a counter if we need
8047 to copy relocs into the output file. */
8048 s->reloc_count = 0;
8049 }
8050 }
65f38f15 8051 else
5bd4f169
AM
8052 {
8053 /* It's not one of our sections, so don't allocate space. */
8054 continue;
8055 }
8056
eea6121a 8057 if (s->size == 0)
5bd4f169 8058 {
c456f082
AM
8059 /* If we don't need this section, strip it from the
8060 output file. This is mostly to handle .rela.bss and
8061 .rela.plt. We must create both sections in
8062 create_dynamic_sections, because they must be created
8063 before the linker maps input sections to output
8064 sections. The linker does that before
8065 adjust_dynamic_symbol is called, and it is that
8066 function which decides whether anything needs to go
8067 into these sections. */
8423293d 8068 s->flags |= SEC_EXCLUDE;
5bd4f169
AM
8069 continue;
8070 }
8071
c456f082 8072 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM
8073 continue;
8074
65f38f15
AM
8075 /* Allocate memory for the section contents. We use bfd_zalloc
8076 here in case unused entries are not reclaimed before the
8077 section's contents are written out. This should not happen,
411e1bfb
AM
8078 but this way if it does we get a R_PPC64_NONE reloc in .rela
8079 sections instead of garbage.
8080 We also rely on the section contents being zero when writing
8081 the GOT. */
eea6121a 8082 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8083 if (s->contents == NULL)
b34976b6 8084 return FALSE;
5bd4f169
AM
8085 }
8086
e717da7e
AM
8087 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8088 {
0c8d6e5c 8089 if (!is_ppc64_elf (ibfd))
7b53ace3
AM
8090 continue;
8091
e717da7e
AM
8092 s = ppc64_elf_tdata (ibfd)->got;
8093 if (s != NULL && s != htab->got)
8094 {
eea6121a 8095 if (s->size == 0)
8423293d 8096 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8097 else
8098 {
eea6121a 8099 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8100 if (s->contents == NULL)
8101 return FALSE;
8102 }
8103 }
8104 s = ppc64_elf_tdata (ibfd)->relgot;
8105 if (s != NULL)
8106 {
eea6121a 8107 if (s->size == 0)
8423293d 8108 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8109 else
8110 {
eea6121a 8111 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8112 if (s->contents == NULL)
8113 return FALSE;
8114 relocs = TRUE;
8115 s->reloc_count = 0;
8116 }
8117 }
8118 }
8119
e86ce104 8120 if (htab->elf.dynamic_sections_created)
5bd4f169
AM
8121 {
8122 /* Add some entries to the .dynamic section. We fill in the
8123 values later, in ppc64_elf_finish_dynamic_sections, but we
8124 must add the entries now so that we get the correct size for
8125 the .dynamic section. The DT_DEBUG entry is filled in by the
8126 dynamic linker and used by the debugger. */
dc810e39 8127#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8128 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8129
36af4a4e 8130 if (info->executable)
5bd4f169 8131 {
dc810e39 8132 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8133 return FALSE;
5bd4f169
AM
8134 }
8135
eea6121a 8136 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8137 {
dc810e39
AM
8138 if (!add_dynamic_entry (DT_PLTGOT, 0)
8139 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8140 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM
8141 || !add_dynamic_entry (DT_JMPREL, 0)
8142 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8143 return FALSE;
5bd4f169
AM
8144 }
8145
19397422
AM
8146 if (NO_OPD_RELOCS)
8147 {
8148 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8149 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8150 return FALSE;
19397422
AM
8151 }
8152
5bd4f169
AM
8153 if (relocs)
8154 {
dc810e39
AM
8155 if (!add_dynamic_entry (DT_RELA, 0)
8156 || !add_dynamic_entry (DT_RELASZ, 0)
8157 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8158 return FALSE;
5bd4f169 8159
65f38f15
AM
8160 /* If any dynamic relocs apply to a read-only section,
8161 then we need a DT_TEXTREL entry. */
248866a8 8162 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8163 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8164
65f38f15 8165 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8166 {
65f38f15 8167 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8168 return FALSE;
5bd4f169 8169 }
5bd4f169 8170 }
5bd4f169 8171 }
65f38f15 8172#undef add_dynamic_entry
5bd4f169 8173
b34976b6 8174 return TRUE;
5bd4f169
AM
8175}
8176
721956f4 8177/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8178
4ce794b7
AM
8179static inline enum ppc_stub_type
8180ppc_type_of_stub (asection *input_sec,
8181 const Elf_Internal_Rela *rel,
8182 struct ppc_link_hash_entry **hash,
8183 bfd_vma destination)
5bd4f169 8184{
721956f4
AM
8185 struct ppc_link_hash_entry *h = *hash;
8186 bfd_vma location;
8187 bfd_vma branch_offset;
8188 bfd_vma max_branch_offset;
4ce794b7 8189 enum elf_ppc64_reloc_type r_type;
5bd4f169 8190
721956f4
AM
8191 if (h != NULL)
8192 {
7fe2b9a6
AM
8193 struct ppc_link_hash_entry *fdh = h;
8194 if (fdh->oh != NULL
8195 && fdh->oh->is_func_descriptor)
8196 fdh = fdh->oh;
8387904d 8197
7fe2b9a6 8198 if (fdh->elf.dynindx != -1)
5bd4f169 8199 {
411e1bfb 8200 struct plt_entry *ent;
8387904d 8201
7fe2b9a6 8202 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
8203 if (ent->addend == rel->r_addend
8204 && ent->plt.offset != (bfd_vma) -1)
8205 {
7fe2b9a6 8206 *hash = fdh;
411e1bfb
AM
8207 return ppc_stub_plt_call;
8208 }
5bd4f169
AM
8209 }
8210
7fe2b9a6
AM
8211 /* Here, we know we don't have a plt entry. If we don't have a
8212 either a defined function descriptor or a defined entry symbol
8213 in a regular object file, then it is pointless trying to make
8214 any other type of stub. */
8215 if (!((fdh->elf.root.type == bfd_link_hash_defined
8216 || fdh->elf.root.type == bfd_link_hash_defweak)
8217 && fdh->elf.root.u.def.section->output_section != NULL)
8218 && !((h->elf.root.type == bfd_link_hash_defined
8219 || h->elf.root.type == bfd_link_hash_defweak)
8220 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8221 return ppc_stub_none;
5d1634d7 8222 }
5d1634d7 8223
721956f4
AM
8224 /* Determine where the call point is. */
8225 location = (input_sec->output_offset
8226 + input_sec->output_section->vma
8227 + rel->r_offset);
5d1634d7 8228
721956f4
AM
8229 branch_offset = destination - location;
8230 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8231
721956f4
AM
8232 /* Determine if a long branch stub is needed. */
8233 max_branch_offset = 1 << 25;
4ce794b7 8234 if (r_type != R_PPC64_REL24)
721956f4 8235 max_branch_offset = 1 << 15;
5d1634d7 8236
721956f4
AM
8237 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8238 /* We need a stub. Figure out whether a long_branch or plt_branch
8239 is needed later. */
8240 return ppc_stub_long_branch;
5d1634d7 8241
721956f4 8242 return ppc_stub_none;
5d1634d7
AM
8243}
8244
8245/* Build a .plt call stub. */
8246
4ce794b7
AM
8247static inline bfd_byte *
8248build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM
8249{
8250#define PPC_LO(v) ((v) & 0xffff)
8251#define PPC_HI(v) (((v) >> 16) & 0xffff)
8252#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8253
ac2df442
AM
8254 if (PPC_HA (offset) != 0)
8255 {
8256 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8257 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8258 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8259 if (PPC_HA (offset + 16) != PPC_HA (offset))
8260 {
8261 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8262 offset = 0;
8263 }
8264 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8265 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8266 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8267 bfd_put_32 (obfd, BCTR, p), p += 4;
8268 }
8269 else
8270 {
8271 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8272 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8273 if (PPC_HA (offset + 16) != PPC_HA (offset))
8274 {
8275 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8276 offset = 0;
8277 }
8278 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8279 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8280 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8281 bfd_put_32 (obfd, BCTR, p), p += 4;
8282 }
5d1634d7
AM
8283 return p;
8284}
8285
b34976b6 8286static bfd_boolean
4ce794b7 8287ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8288{
721956f4
AM
8289 struct ppc_stub_hash_entry *stub_entry;
8290 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM
8291 struct bfd_link_info *info;
8292 struct ppc_link_hash_table *htab;
721956f4
AM
8293 bfd_byte *loc;
8294 bfd_byte *p;
8295 unsigned int indx;
411e1bfb 8296 struct plt_entry *ent;
ee75fd95 8297 bfd_vma dest, off;
721956f4 8298 int size;
5d1634d7 8299
721956f4
AM
8300 /* Massage our args to the form they really have. */
8301 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8302 info = in_arg;
5d1634d7 8303
5d1634d7
AM
8304 htab = ppc_hash_table (info);
8305
721956f4 8306 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8307 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8308 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8309
4ce794b7 8310 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8311 switch (stub_entry->stub_type)
5d1634d7 8312 {
721956f4 8313 case ppc_stub_long_branch:
ad8e1ba5 8314 case ppc_stub_long_branch_r2off:
721956f4 8315 /* Branches are relative. This is where we are going to. */
ee75fd95
AM
8316 off = dest = (stub_entry->target_value
8317 + stub_entry->target_section->output_offset
8318 + stub_entry->target_section->output_section->vma);
5d1634d7 8319
721956f4
AM
8320 /* And this is where we are coming from. */
8321 off -= (stub_entry->stub_offset
97b639ba
AM
8322 + stub_entry->stub_sec->output_offset
8323 + stub_entry->stub_sec->output_section->vma);
e86ce104 8324
ac2df442
AM
8325 size = 4;
8326 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM
8327 {
8328 bfd_vma r2off;
8329
8330 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8331 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8332 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8333 loc += 4;
ac2df442
AM
8334 size = 12;
8335 if (PPC_HA (r2off) != 0)
8336 {
8337 size = 16;
8338 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8339 loc += 4;
8340 }
97b639ba 8341 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 8342 loc += 4;
ac2df442 8343 off -= size - 4;
ad8e1ba5 8344 }
97b639ba 8345 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8346
5c3dead3
AM
8347 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8348 {
8349 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8350 stub_entry->root.string);
8351 htab->stub_error = TRUE;
8352 return FALSE;
8353 }
ee75fd95
AM
8354
8355 if (info->emitrelocations)
8356 {
8357 Elf_Internal_Rela *relocs, *r;
8358 struct bfd_elf_section_data *elfsec_data;
8359
8360 elfsec_data = elf_section_data (stub_entry->stub_sec);
8361 relocs = elfsec_data->relocs;
8362 if (relocs == NULL)
8363 {
8364 bfd_size_type relsize;
8365 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8366 relocs = bfd_alloc (htab->stub_bfd, relsize);
8367 if (relocs == NULL)
8368 return FALSE;
8369 elfsec_data->relocs = relocs;
2e5b2d74
AM
8370 elfsec_data->rel_hdr.sh_size = (stub_entry->stub_sec->reloc_count
8371 * sizeof (Elf64_External_Rela));
8372 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
ee75fd95
AM
8373 stub_entry->stub_sec->reloc_count = 0;
8374 }
8375 r = relocs + stub_entry->stub_sec->reloc_count;
8376 stub_entry->stub_sec->reloc_count += 1;
8377 r->r_offset = loc - stub_entry->stub_sec->contents;
8378 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8379 r->r_addend = dest;
8380 if (stub_entry->h != NULL)
8381 {
8382 struct elf_link_hash_entry **hashes;
8383 unsigned long symndx;
8384 struct ppc_link_hash_entry *h;
8385
8386 hashes = elf_sym_hashes (htab->stub_bfd);
8387 if (hashes == NULL)
8388 {
8389 bfd_size_type hsize;
8390
8391 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8392 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8393 if (hashes == NULL)
8394 return FALSE;
8395 elf_sym_hashes (htab->stub_bfd) = hashes;
8396 htab->stub_globals = 1;
8397 }
8398 symndx = htab->stub_globals++;
8399 h = stub_entry->h;
8400 hashes[symndx] = &h->elf;
8401 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8402 if (h->oh != NULL && h->oh->is_func)
8403 h = h->oh;
8404 if (h->elf.root.u.def.section != stub_entry->target_section)
8405 /* H is an opd symbol. The addend must be zero. */
8406 r->r_addend = 0;
8407 else
8408 {
8409 off = (h->elf.root.u.def.value
8410 + h->elf.root.u.def.section->output_offset
8411 + h->elf.root.u.def.section->output_section->vma);
8412 r->r_addend -= off;
8413 }
8414 }
8415 }
721956f4 8416 break;
e86ce104 8417
721956f4 8418 case ppc_stub_plt_branch:
ad8e1ba5 8419 case ppc_stub_plt_branch_r2off:
721956f4
AM
8420 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8421 stub_entry->root.string + 9,
b34976b6 8422 FALSE, FALSE);
721956f4
AM
8423 if (br_entry == NULL)
8424 {
8425 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8426 stub_entry->root.string);
b34976b6
AM
8427 htab->stub_error = TRUE;
8428 return FALSE;
721956f4
AM
8429 }
8430
8431 off = (stub_entry->target_value
8432 + stub_entry->target_section->output_offset
8433 + stub_entry->target_section->output_section->vma);
8434
4ce794b7
AM
8435 bfd_put_64 (htab->brlt->owner, off,
8436 htab->brlt->contents + br_entry->offset);
721956f4 8437
f94498ff 8438 if (br_entry->iter == htab->stub_iteration)
721956f4 8439 {
f94498ff 8440 br_entry->iter = 0;
84f5d08e 8441
f94498ff 8442 if (htab->relbrlt != NULL)
84f5d08e 8443 {
f94498ff
AM
8444 /* Create a reloc for the branch lookup table entry. */
8445 Elf_Internal_Rela rela;
8446 bfd_byte *rl;
8447
8448 rela.r_offset = (br_entry->offset
8449 + htab->brlt->output_offset
8450 + htab->brlt->output_section->vma);
8451 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8452 rela.r_addend = off;
8453
8454 rl = htab->relbrlt->contents;
8455 rl += (htab->relbrlt->reloc_count++
8456 * sizeof (Elf64_External_Rela));
8457 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8458 }
8459 else if (info->emitrelocations)
8460 {
8461 Elf_Internal_Rela *relocs, *r;
8462 struct bfd_elf_section_data *elfsec_data;
8463
8464 elfsec_data = elf_section_data (htab->brlt);
8465 relocs = elfsec_data->relocs;
84f5d08e 8466 if (relocs == NULL)
f94498ff
AM
8467 {
8468 bfd_size_type relsize;
8469 relsize = htab->brlt->reloc_count * sizeof (*relocs);
8470 relocs = bfd_alloc (htab->brlt->owner, relsize);
8471 if (relocs == NULL)
8472 return FALSE;
8473 elfsec_data->relocs = relocs;
8474 elfsec_data->rel_hdr.sh_size
8475 = (stub_entry->stub_sec->reloc_count
8476 * sizeof (Elf64_External_Rela));
8477 elfsec_data->rel_hdr.sh_entsize
8478 = sizeof (Elf64_External_Rela);
8479 htab->brlt->reloc_count = 0;
8480 }
8481 r = relocs + htab->brlt->reloc_count;
8482 htab->brlt->reloc_count += 1;
8483 r->r_offset = (br_entry->offset
8484 + htab->brlt->output_offset
8485 + htab->brlt->output_section->vma);
8486 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8487 r->r_addend = off;
84f5d08e 8488 }
84f5d08e 8489 }
721956f4
AM
8490
8491 off = (br_entry->offset
4ce794b7
AM
8492 + htab->brlt->output_offset
8493 + htab->brlt->output_section->vma
8494 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8495 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8496
ad8e1ba5 8497 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM
8498 {
8499 (*_bfd_error_handler)
e86ce104 8500 (_("linkage table error against `%s'"),
721956f4 8501 stub_entry->root.string);
5d1634d7 8502 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
8503 htab->stub_error = TRUE;
8504 return FALSE;
5d1634d7 8505 }
41bd81ab 8506
721956f4 8507 indx = off;
ad8e1ba5
AM
8508 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8509 {
ac2df442
AM
8510 if (PPC_HA (indx) != 0)
8511 {
8512 size = 16;
8513 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8514 loc += 4;
8515 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8516 }
8517 else
8518 {
8519 size = 12;
8520 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
8521 }
ad8e1ba5
AM
8522 }
8523 else
8524 {
8525 bfd_vma r2off;
8526
8527 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8528 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8529 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8530 loc += 4;
ac2df442
AM
8531 size = 20;
8532 if (PPC_HA (indx) != 0)
8533 {
8534 size += 4;
8535 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8536 loc += 4;
8537 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8538 loc += 4;
8539 }
8540 else
8541 {
8542 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
8543 loc += 4;
8544 }
8545
8546 if (PPC_HA (r2off) != 0)
8547 {
8548 size += 4;
8549 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8550 loc += 4;
8551 }
97b639ba 8552 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
8553 }
8554 loc += 4;
97b639ba 8555 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8556 loc += 4;
97b639ba 8557 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8558 break;
5d1634d7 8559
721956f4 8560 case ppc_stub_plt_call:
c862ae31
AM
8561 /* Do the best we can for shared libraries built without
8562 exporting ".foo" for each "foo". This can happen when symbol
8563 versioning scripts strip all bar a subset of symbols. */
8387904d
AM
8564 if (stub_entry->h->oh != NULL
8565 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8566 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM
8567 {
8568 /* Point the symbol at the stub. There may be multiple stubs,
8569 we don't really care; The main thing is to make this sym
8f3bab57
AM
8570 defined somewhere. Maybe defining the symbol in the stub
8571 section is a silly idea. If we didn't do this, htab->top_id
8572 could disappear. */
34814b9f
AM
8573 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8574 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8575 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM
8576 }
8577
721956f4 8578 /* Now build the stub. */
411e1bfb
AM
8579 off = (bfd_vma) -1;
8580 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8581 if (ent->addend == stub_entry->addend)
8582 {
8583 off = ent->plt.offset;
8584 break;
8585 }
721956f4
AM
8586 if (off >= (bfd_vma) -2)
8587 abort ();
8588
8589 off &= ~ (bfd_vma) 1;
4ce794b7
AM
8590 off += (htab->plt->output_offset
8591 + htab->plt->output_section->vma
8592 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8593 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8594
ad8e1ba5 8595 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM
8596 {
8597 (*_bfd_error_handler)
8598 (_("linkage table error against `%s'"),
8599 stub_entry->h->elf.root.root.string);
8600 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
8601 htab->stub_error = TRUE;
8602 return FALSE;
721956f4
AM
8603 }
8604
97b639ba 8605 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM
8606 size = p - loc;
8607 break;
8608
8609 default:
8610 BFD_FAIL ();
b34976b6 8611 return FALSE;
721956f4
AM
8612 }
8613
eea6121a 8614 stub_entry->stub_sec->size += size;
97b639ba 8615
ee75fd95 8616 if (htab->emit_stub_syms)
97b639ba
AM
8617 {
8618 struct elf_link_hash_entry *h;
ee75fd95
AM
8619 size_t len1, len2;
8620 char *name;
8621 const char *const stub_str[] = { "long_branch",
8622 "long_branch_r2off",
8623 "plt_branch",
8624 "plt_branch_r2off",
8625 "plt_call" };
8626
8627 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8628 len2 = strlen (stub_entry->root.string);
8629 name = bfd_malloc (len1 + len2 + 2);
8630 if (name == NULL)
8631 return FALSE;
8632 memcpy (name, stub_entry->root.string, 9);
8633 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8634 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8635 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM
8636 if (h == NULL)
8637 return FALSE;
8638 if (h->root.type == bfd_link_hash_new)
8639 {
8640 h->root.type = bfd_link_hash_defined;
8641 h->root.u.def.section = stub_entry->stub_sec;
8642 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM
8643 h->ref_regular = 1;
8644 h->def_regular = 1;
8645 h->ref_regular_nonweak = 1;
8646 h->forced_local = 1;
8647 h->non_elf = 0;
97b639ba
AM
8648 }
8649 }
8650
b34976b6 8651 return TRUE;
721956f4
AM
8652}
8653
8654/* As above, but don't actually build the stub. Just bump offset so
8655 we know stub section sizes, and select plt_branch stubs where
8656 long_branch stubs won't do. */
8657
b34976b6 8658static bfd_boolean
4ce794b7 8659ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM
8660{
8661 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8662 struct bfd_link_info *info;
721956f4
AM
8663 struct ppc_link_hash_table *htab;
8664 bfd_vma off;
8665 int size;
8666
8667 /* Massage our args to the form they really have. */
8668 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM
8669 info = in_arg;
8670
8671 htab = ppc_hash_table (info);
721956f4
AM
8672
8673 if (stub_entry->stub_type == ppc_stub_plt_call)
8674 {
411e1bfb 8675 struct plt_entry *ent;
58ac9f71 8676 off = (bfd_vma) -1;
411e1bfb
AM
8677 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8678 if (ent->addend == stub_entry->addend)
8679 {
8680 off = ent->plt.offset & ~(bfd_vma) 1;
8681 break;
8682 }
58ac9f71 8683 if (off >= (bfd_vma) -2)
411e1bfb 8684 abort ();
4ce794b7
AM
8685 off += (htab->plt->output_offset
8686 + htab->plt->output_section->vma
8687 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8688 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8689
ad8e1ba5 8690 size = PLT_CALL_STUB_SIZE;
ac2df442
AM
8691 if (PPC_HA (off) == 0)
8692 size -= 4;
4ce794b7 8693 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM
8694 size += 4;
8695 }
8696 else
8697 {
ad8e1ba5
AM
8698 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8699 variants. */
ac2df442
AM
8700 bfd_vma r2off = 0;
8701
721956f4
AM
8702 off = (stub_entry->target_value
8703 + stub_entry->target_section->output_offset
8704 + stub_entry->target_section->output_section->vma);
eea6121a 8705 off -= (stub_entry->stub_sec->size
721956f4
AM
8706 + stub_entry->stub_sec->output_offset
8707 + stub_entry->stub_sec->output_section->vma);
8708
ad8e1ba5
AM
8709 /* Reset the stub type from the plt variant in case we now
8710 can reach with a shorter stub. */
8711 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8712 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8713
8714 size = 4;
8715 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8716 {
ac2df442
AM
8717 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8718 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8719 size = 12;
8720 if (PPC_HA (r2off) != 0)
8721 size = 16;
8722 off -= size - 4;
ad8e1ba5
AM
8723 }
8724
8725 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM
8726 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8727 {
8728 struct ppc_branch_hash_entry *br_entry;
ac2df442 8729 unsigned int indx;
721956f4
AM
8730
8731 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8732 stub_entry->root.string + 9,
b34976b6 8733 TRUE, FALSE);
721956f4
AM
8734 if (br_entry == NULL)
8735 {
8736 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8737 stub_entry->root.string);
b34976b6
AM
8738 htab->stub_error = TRUE;
8739 return FALSE;
721956f4
AM
8740 }
8741
8742 if (br_entry->iter != htab->stub_iteration)
8743 {
8744 br_entry->iter = htab->stub_iteration;
eea6121a
AM
8745 br_entry->offset = htab->brlt->size;
8746 htab->brlt->size += 8;
63bc6f6c 8747
ee75fd95 8748 if (htab->relbrlt != NULL)
eea6121a 8749 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM
8750 else if (info->emitrelocations)
8751 {
8752 htab->brlt->reloc_count += 1;
8753 htab->brlt->flags |= SEC_RELOC;
8754 }
721956f4 8755 }
ad8e1ba5
AM
8756
8757 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM
8758 off = (br_entry->offset
8759 + htab->brlt->output_offset
8760 + htab->brlt->output_section->vma
8761 - elf_gp (htab->brlt->output_section->owner)
8762 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8763
8764 indx = off;
8765 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8766 {
8767 size = 12;
8768 if (PPC_HA (indx) != 0)
8769 size = 16;
8770 }
8771 else
8772 {
8773 size = 20;
8774 if (PPC_HA (indx) != 0)
8775 size += 4;
8776
8777 if (PPC_HA (r2off) != 0)
8778 size += 4;
8779 }
721956f4 8780 }
84f5d08e
AM
8781 else if (info->emitrelocations)
8782 {
8783 stub_entry->stub_sec->reloc_count += 1;
8784 stub_entry->stub_sec->flags |= SEC_RELOC;
8785 }
721956f4
AM
8786 }
8787
eea6121a 8788 stub_entry->stub_sec->size += size;
b34976b6 8789 return TRUE;
721956f4
AM
8790}
8791
8792/* Set up various things so that we can make a list of input sections
8793 for each output section included in the link. Returns -1 on error,
cedb70c5 8794 0 when no stubs will be needed, and 1 on success. */
721956f4
AM
8795
8796int
4c52953f
AM
8797ppc64_elf_setup_section_lists (bfd *output_bfd,
8798 struct bfd_link_info *info,
8799 int no_multi_toc)
721956f4
AM
8800{
8801 bfd *input_bfd;
734b6cf9 8802 int top_id, top_index, id;
721956f4 8803 asection *section;
734b6cf9 8804 asection **input_list;
721956f4
AM
8805 bfd_size_type amt;
8806 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8807
4c52953f
AM
8808 htab->no_multi_toc = no_multi_toc;
8809
4ce794b7 8810 if (htab->brlt == NULL)
721956f4
AM
8811 return 0;
8812
1e2f5b6e 8813 /* Find the top input section id. */
3d6f9012 8814 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM
8815 input_bfd != NULL;
8816 input_bfd = input_bfd->link_next)
8817 {
721956f4
AM
8818 for (section = input_bfd->sections;
8819 section != NULL;
8820 section = section->next)
8821 {
8822 if (top_id < section->id)
8823 top_id = section->id;
8824 }
8825 }
721956f4 8826
8f3bab57 8827 htab->top_id = top_id;
721956f4 8828 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8829 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM
8830 if (htab->stub_group == NULL)
8831 return -1;
8832
3d6f9012
AM
8833 /* Set toc_off for com, und, abs and ind sections. */
8834 for (id = 0; id < 3; id++)
8835 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8836
3d6f9012 8837 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM
8838
8839 /* We can't use output_bfd->section_count here to find the top output
8840 section index as some sections may have been removed, and
8423293d 8841 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM
8842 for (section = output_bfd->sections, top_index = 0;
8843 section != NULL;
8844 section = section->next)
8845 {
8846 if (top_index < section->index)
8847 top_index = section->index;
8848 }
8849
8850 htab->top_index = top_index;
8851 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8852 input_list = bfd_zmalloc (amt);
734b6cf9
AM
8853 htab->input_list = input_list;
8854 if (input_list == NULL)
8855 return -1;
8856
721956f4
AM
8857 return 1;
8858}
8859
e717da7e
AM
8860/* The linker repeatedly calls this function for each TOC input section
8861 and linker generated GOT section. Group input bfds such that the toc
8862 within a group is less than 64k in size. Will break with cute linker
8863 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM
8864
8865void
4ce794b7 8866ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM
8867{
8868 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8869
4c52953f
AM
8870 if (!htab->no_multi_toc)
8871 {
8872 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8873 bfd_vma off = addr - htab->toc_curr;
8874
8875 if (off + isec->size > 0x10000)
8876 htab->toc_curr = addr;
99877b66 8877
4c52953f
AM
8878 elf_gp (isec->owner) = (htab->toc_curr
8879 - elf_gp (isec->output_section->owner)
8880 + TOC_BASE_OFF);
8881 }
ad8e1ba5
AM
8882}
8883
8884/* Called after the last call to the above function. */
8885
8886void
4c52953f 8887ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM
8888{
8889 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8890
4c52953f
AM
8891 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8892
ad8e1ba5
AM
8893 /* toc_curr tracks the TOC offset used for code sections below in
8894 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8895 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM
8896}
8897
9b5ecbd0
AM
8898/* No toc references were found in ISEC. If the code in ISEC makes no
8899 calls, then there's no need to use toc adjusting stubs when branching
8900 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM
8901 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8902 needed, and 2 if a cyclical call-graph was found but no other reason
8903 for a stub was detected. If called from the top level, a return of
8904 2 means the same as a return of 0. */
9b5ecbd0
AM
8905
8906static int
4ce794b7 8907toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8908{
4c52953f
AM
8909 Elf_Internal_Rela *relstart, *rel;
8910 Elf_Internal_Sym *local_syms;
9b5ecbd0 8911 int ret;
4c52953f 8912 struct ppc_link_hash_table *htab;
9b5ecbd0 8913
772119ce
AM
8914 /* We know none of our code bearing sections will need toc stubs. */
8915 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8916 return 0;
8917
eea6121a 8918 if (isec->size == 0)
082c50f8
AM
8919 return 0;
8920
4c52953f
AM
8921 if (isec->output_section == NULL)
8922 return 0;
8923
4c52953f
AM
8924 if (isec->reloc_count == 0)
8925 return 0;
8926
8927 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8928 info->keep_memory);
8929 if (relstart == NULL)
8930 return -1;
8931
8932 /* Look for branches to outside of this section. */
8933 local_syms = NULL;
8934 ret = 0;
8935 htab = ppc_hash_table (info);
8936 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8937 {
4c52953f
AM
8938 enum elf_ppc64_reloc_type r_type;
8939 unsigned long r_symndx;
8940 struct elf_link_hash_entry *h;
8941 Elf_Internal_Sym *sym;
8942 asection *sym_sec;
74f0fb50 8943 struct _opd_sec_data *opd;
4c52953f
AM
8944 bfd_vma sym_value;
8945 bfd_vma dest;
8946
8947 r_type = ELF64_R_TYPE (rel->r_info);
8948 if (r_type != R_PPC64_REL24
8949 && r_type != R_PPC64_REL14
8950 && r_type != R_PPC64_REL14_BRTAKEN
8951 && r_type != R_PPC64_REL14_BRNTAKEN)
8952 continue;
8953
8954 r_symndx = ELF64_R_SYM (rel->r_info);
8955 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8956 isec->owner))
9b5ecbd0 8957 {
4c52953f
AM
8958 ret = -1;
8959 break;
9b5ecbd0 8960 }
9b5ecbd0 8961
2917689a
AM
8962 /* Calls to dynamic lib functions go through a plt call stub
8963 that uses r2. Branches to undefined symbols might be a call
8964 using old-style dot symbols that can be satisfied by a plt
8965 call into a new-style dynamic library. */
4c52953f 8966 if (sym_sec == NULL)
2917689a
AM
8967 {
8968 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8969 if (eh != NULL
8970 && eh->oh != NULL
8971 && eh->oh->elf.plt.plist != NULL)
8972 {
8973 ret = 1;
8974 break;
8975 }
4c52953f 8976
2917689a
AM
8977 /* Ignore other undefined symbols. */
8978 continue;
8979 }
8980
8981 /* Assume branches to other sections not included in the link need
8982 stubs too, to cover -R and absolute syms. */
4c52953f
AM
8983 if (sym_sec->output_section == NULL)
8984 {
8985 ret = 1;
8986 break;
8987 }
8988
8989 if (h == NULL)
8990 sym_value = sym->st_value;
8991 else
8992 {
8993 if (h->root.type != bfd_link_hash_defined
8994 && h->root.type != bfd_link_hash_defweak)
8995 abort ();
8996 sym_value = h->root.u.def.value;
8997 }
8998 sym_value += rel->r_addend;
8999
9000 /* If this branch reloc uses an opd sym, find the code section. */
74f0fb50
AM
9001 opd = get_opd_info (sym_sec);
9002 if (opd != NULL)
4c52953f 9003 {
74f0fb50 9004 if (h == NULL && opd->adjust != NULL)
4c52953f
AM
9005 {
9006 long adjust;
9007
74f0fb50 9008 adjust = opd->adjust[sym->st_value / 8];
4c52953f
AM
9009 if (adjust == -1)
9010 /* Assume deleted functions won't ever be called. */
9011 continue;
9012 sym_value += adjust;
9013 }
9014
9015 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
9016 if (dest == (bfd_vma) -1)
9017 continue;
9018 }
9019 else
9020 dest = (sym_value
9021 + sym_sec->output_offset
9022 + sym_sec->output_section->vma);
9023
9024 /* Ignore branch to self. */
9025 if (sym_sec == isec)
9026 continue;
9027
9028 /* If the called function uses the toc, we need a stub. */
9029 if (sym_sec->has_toc_reloc
9030 || sym_sec->makes_toc_func_call)
9031 {
9032 ret = 1;
9033 break;
9034 }
9035
9036 /* Assume any branch that needs a long branch stub might in fact
9037 need a plt_branch stub. A plt_branch stub uses r2. */
9038 else if (dest - (isec->output_offset
9039 + isec->output_section->vma
9040 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM
9041 {
9042 ret = 1;
9043 break;
9044 }
4c52953f
AM
9045
9046 /* If calling back to a section in the process of being tested, we
9047 can't say for sure that no toc adjusting stubs are needed, so
9048 don't return zero. */
9049 else if (sym_sec->call_check_in_progress)
9050 ret = 2;
9051
9052 /* Branches to another section that itself doesn't have any TOC
9053 references are OK. Recursively call ourselves to check. */
9054 else if (sym_sec->id <= htab->top_id
9055 && htab->stub_group[sym_sec->id].toc_off == 0)
9056 {
9057 int recur;
9058
9059 /* Mark current section as indeterminate, so that other
9060 sections that call back to current won't be marked as
9061 known. */
9062 isec->call_check_in_progress = 1;
9063 recur = toc_adjusting_stub_needed (info, sym_sec);
9064 isec->call_check_in_progress = 0;
9065
9066 if (recur < 0)
9067 {
9068 /* An error. Exit. */
9069 ret = -1;
9070 break;
9071 }
9072 else if (recur <= 1)
9073 {
9074 /* Known result. Mark as checked and set section flag. */
9075 htab->stub_group[sym_sec->id].toc_off = 1;
9076 if (recur != 0)
9077 {
9078 sym_sec->makes_toc_func_call = 1;
9079 ret = 1;
9080 break;
9081 }
9082 }
9083 else
9084 {
9085 /* Unknown result. Continue checking. */
9086 ret = 2;
9087 }
9088 }
9b5ecbd0
AM
9089 }
9090
4c52953f 9091 if (local_syms != NULL
0ffa91dd 9092 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
4c52953f
AM
9093 free (local_syms);
9094 if (elf_section_data (isec)->relocs != relstart)
9095 free (relstart);
9096
9b5ecbd0
AM
9097 return ret;
9098}
9099
721956f4
AM
9100/* The linker repeatedly calls this function for each input section,
9101 in the order that input sections are linked into output sections.
9102 Build lists of input sections to determine groupings between which
9103 we may insert linker stubs. */
9104
9b5ecbd0 9105bfd_boolean
4ce794b7 9106ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM
9107{
9108 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9109
734b6cf9
AM
9110 if ((isec->output_section->flags & SEC_CODE) != 0
9111 && isec->output_section->index <= htab->top_index)
721956f4 9112 {
734b6cf9 9113 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9114 /* Steal the link_sec pointer for our list. */
721956f4 9115#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM
9116 /* This happens to make the list in reverse order,
9117 which is what we want. */
734b6cf9
AM
9118 PREV_SEC (isec) = *list;
9119 *list = isec;
721956f4 9120 }
ad8e1ba5 9121
4c52953f 9122 if (htab->multi_toc_needed)
9b5ecbd0 9123 {
4c52953f
AM
9124 /* If a code section has a function that uses the TOC then we need
9125 to use the right TOC (obviously). Also, make sure that .opd gets
9126 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM
9127 can't find their function symbol (shouldn't ever happen now).
9128 Also specially treat .fixup for the linux kernel. .fixup
9129 contains branches, but only back to the function that hit an
9130 exception. */
9131 if (isec->has_toc_reloc
9132 || (isec->flags & SEC_CODE) == 0
9133 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM
9134 {
9135 if (elf_gp (isec->owner) != 0)
9136 htab->toc_curr = elf_gp (isec->owner);
9137 }
9138 else if (htab->stub_group[isec->id].toc_off == 0)
9139 {
9140 int ret = toc_adjusting_stub_needed (info, isec);
9141 if (ret < 0)
9142 return FALSE;
9143 else
9144 isec->makes_toc_func_call = ret & 1;
9145 }
9b5ecbd0 9146 }
ad8e1ba5
AM
9147
9148 /* Functions that don't use the TOC can belong in any TOC group.
9149 Use the last TOC base. This happens to make _init and _fini
9150 pasting work. */
9151 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9152 return TRUE;
721956f4
AM
9153}
9154
9155/* See whether we can group stub sections together. Grouping stub
9156 sections may result in fewer stubs. More importantly, we need to
9157 put all .init* and .fini* stubs at the beginning of the .init or
9158 .fini output sections respectively, because glibc splits the
9159 _init and _fini functions into multiple parts. Putting a stub in
9160 the middle of a function is not a good idea. */
9161
9162static void
4ce794b7
AM
9163group_sections (struct ppc_link_hash_table *htab,
9164 bfd_size_type stub_group_size,
9165 bfd_boolean stubs_always_before_branch)
721956f4 9166{
7c8fe5c4
AM
9167 asection **list;
9168 bfd_size_type stub14_group_size;
9169 bfd_boolean suppress_size_errors;
9170
9171 suppress_size_errors = FALSE;
9172 stub14_group_size = stub_group_size;
9173 if (stub_group_size == 1)
9174 {
9175 /* Default values. */
9176 if (stubs_always_before_branch)
9177 {
9178 stub_group_size = 0x1e00000;
9179 stub14_group_size = 0x7800;
9180 }
9181 else
9182 {
9183 stub_group_size = 0x1c00000;
9184 stub14_group_size = 0x7000;
9185 }
9186 suppress_size_errors = TRUE;
9187 }
9188
9189 list = htab->input_list + htab->top_index;
734b6cf9 9190 do
721956f4 9191 {
734b6cf9
AM
9192 asection *tail = *list;
9193 while (tail != NULL)
721956f4 9194 {
734b6cf9
AM
9195 asection *curr;
9196 asection *prev;
9197 bfd_size_type total;
9198 bfd_boolean big_sec;
9199 bfd_vma curr_toc;
9200
9201 curr = tail;
eea6121a 9202 total = tail->size;
7c8fe5c4
AM
9203 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9204 ? stub14_group_size : stub_group_size);
9205 if (big_sec && !suppress_size_errors)
5c3dead3
AM
9206 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9207 tail->owner, tail);
734b6cf9
AM
9208 curr_toc = htab->stub_group[tail->id].toc_off;
9209
9210 while ((prev = PREV_SEC (curr)) != NULL
9211 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM
9212 < (ppc64_elf_section_data (prev)->has_14bit_branch
9213 ? stub14_group_size : stub_group_size))
ad8e1ba5 9214 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM
9215 curr = prev;
9216
9217 /* OK, the size from the start of CURR to the end is less
9218 than stub_group_size and thus can be handled by one stub
9219 section. (or the tail section is itself larger than
9220 stub_group_size, in which case we may be toast.) We
9221 should really be keeping track of the total size of stubs
9222 added here, as stubs contribute to the final output
9223 section size. That's a little tricky, and this way will
9224 only break if stubs added make the total size more than
9225 2^25, ie. for the default stub_group_size, if stubs total
9226 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9227 do
721956f4
AM
9228 {
9229 prev = PREV_SEC (tail);
734b6cf9 9230 /* Set up this stub group. */
721956f4
AM
9231 htab->stub_group[tail->id].link_sec = curr;
9232 }
734b6cf9
AM
9233 while (tail != curr && (tail = prev) != NULL);
9234
9235 /* But wait, there's more! Input sections up to stub_group_size
9236 bytes before the stub section can be handled by it too.
9237 Don't do this if we have a really large section after the
9238 stubs, as adding more stubs increases the chance that
9239 branches may not reach into the stub section. */
9240 if (!stubs_always_before_branch && !big_sec)
9241 {
9242 total = 0;
9243 while (prev != NULL
9244 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM
9245 < (ppc64_elf_section_data (prev)->has_14bit_branch
9246 ? stub14_group_size : stub_group_size))
734b6cf9
AM
9247 && htab->stub_group[prev->id].toc_off == curr_toc)
9248 {
9249 tail = prev;
9250 prev = PREV_SEC (tail);
9251 htab->stub_group[tail->id].link_sec = curr;
9252 }
9253 }
9254 tail = prev;
721956f4
AM
9255 }
9256 }
734b6cf9
AM
9257 while (list-- != htab->input_list);
9258 free (htab->input_list);
721956f4
AM
9259#undef PREV_SEC
9260}
9261
721956f4
AM
9262/* Determine and set the size of the stub section for a final link.
9263
9264 The basic idea here is to examine all the relocations looking for
9265 PC-relative calls to a target that is unreachable with a "bl"
9266 instruction. */
9267
b34976b6 9268bfd_boolean
4ce794b7 9269ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM
9270 struct bfd_link_info *info,
9271 bfd_signed_vma group_size,
9272 asection *(*add_stub_section) (const char *, asection *),
9273 void (*layout_sections_again) (void))
721956f4
AM
9274{
9275 bfd_size_type stub_group_size;
b34976b6 9276 bfd_boolean stubs_always_before_branch;
721956f4
AM
9277 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9278
9279 /* Stash our params away. */
721956f4
AM
9280 htab->add_stub_section = add_stub_section;
9281 htab->layout_sections_again = layout_sections_again;
9282 stubs_always_before_branch = group_size < 0;
9283 if (group_size < 0)
9284 stub_group_size = -group_size;
9285 else
9286 stub_group_size = group_size;
721956f4
AM
9287
9288 group_sections (htab, stub_group_size, stubs_always_before_branch);
9289
721956f4
AM
9290 while (1)
9291 {
9292 bfd *input_bfd;
9293 unsigned int bfd_indx;
9294 asection *stub_sec;
721956f4
AM
9295
9296 htab->stub_iteration += 1;
721956f4
AM
9297
9298 for (input_bfd = info->input_bfds, bfd_indx = 0;
9299 input_bfd != NULL;
9300 input_bfd = input_bfd->link_next, bfd_indx++)
9301 {
9302 Elf_Internal_Shdr *symtab_hdr;
9303 asection *section;
6cdc0ccc 9304 Elf_Internal_Sym *local_syms = NULL;
721956f4 9305
0c8d6e5c 9306 if (!is_ppc64_elf (input_bfd))
67f93c31
AM
9307 continue;
9308
721956f4 9309 /* We'll need the symbol table in a second. */
0ffa91dd 9310 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM
9311 if (symtab_hdr->sh_info == 0)
9312 continue;
9313
721956f4
AM
9314 /* Walk over each section attached to the input bfd. */
9315 for (section = input_bfd->sections;
9316 section != NULL;
9317 section = section->next)
9318 {
721956f4 9319 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM
9320
9321 /* If there aren't any relocs, then there's nothing more
9322 to do. */
9323 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM
9324 || (section->flags & SEC_ALLOC) == 0
9325 || (section->flags & SEC_LOAD) == 0
9326 || (section->flags & SEC_CODE) == 0
721956f4
AM
9327 || section->reloc_count == 0)
9328 continue;
9329
9330 /* If this section is a link-once section that will be
9331 discarded, then don't create any stubs. */
9332 if (section->output_section == NULL
9333 || section->output_section->owner != output_bfd)
9334 continue;
9335
1e2f5b6e
AM
9336 /* Get the relocs. */
9337 internal_relocs
4ce794b7 9338 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9339 info->keep_memory);
721956f4 9340 if (internal_relocs == NULL)
1e2f5b6e 9341 goto error_ret_free_local;
721956f4
AM
9342
9343 /* Now examine each relocation. */
9344 irela = internal_relocs;
9345 irelaend = irela + section->reloc_count;
9346 for (; irela < irelaend; irela++)
9347 {
4ce794b7
AM
9348 enum elf_ppc64_reloc_type r_type;
9349 unsigned int r_indx;
721956f4
AM
9350 enum ppc_stub_type stub_type;
9351 struct ppc_stub_hash_entry *stub_entry;
8387904d 9352 asection *sym_sec, *code_sec;
721956f4
AM
9353 bfd_vma sym_value;
9354 bfd_vma destination;
8843416a 9355 bfd_boolean ok_dest;
721956f4 9356 struct ppc_link_hash_entry *hash;
8387904d 9357 struct ppc_link_hash_entry *fdh;
411e1bfb
AM
9358 struct elf_link_hash_entry *h;
9359 Elf_Internal_Sym *sym;
721956f4
AM
9360 char *stub_name;
9361 const asection *id_sec;
74f0fb50 9362 struct _opd_sec_data *opd;
721956f4
AM
9363
9364 r_type = ELF64_R_TYPE (irela->r_info);
9365 r_indx = ELF64_R_SYM (irela->r_info);
9366
4ce794b7 9367 if (r_type >= R_PPC64_max)
721956f4
AM
9368 {
9369 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9370 goto error_ret_free_internal;
721956f4
AM
9371 }
9372
9373 /* Only look for stubs on branch instructions. */
4ce794b7
AM
9374 if (r_type != R_PPC64_REL24
9375 && r_type != R_PPC64_REL14
9376 && r_type != R_PPC64_REL14_BRTAKEN
9377 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM
9378 continue;
9379
9380 /* Now determine the call target, its name, value,
9381 section. */
411e1bfb
AM
9382 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9383 r_indx, input_bfd))
9384 goto error_ret_free_internal;
9385 hash = (struct ppc_link_hash_entry *) h;
9386
8843416a 9387 ok_dest = FALSE;
8387904d 9388 fdh = NULL;
7fe2b9a6 9389 sym_value = 0;
411e1bfb 9390 if (hash == NULL)
721956f4 9391 {
411e1bfb 9392 sym_value = sym->st_value;
8843416a 9393 ok_dest = TRUE;
721956f4 9394 }
7fe2b9a6
AM
9395 else if (hash->elf.root.type == bfd_link_hash_defined
9396 || hash->elf.root.type == bfd_link_hash_defweak)
9397 {
9398 sym_value = hash->elf.root.u.def.value;
9399 if (sym_sec->output_section != NULL)
9400 ok_dest = TRUE;
9401 }
9402 else if (hash->elf.root.type == bfd_link_hash_undefweak
9403 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9404 {
99877b66 9405 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM
9406 use the func descriptor sym instead if it is
9407 defined. */
ceb1f1ef 9408 if (hash->elf.root.root.string[0] == '.'
8387904d
AM
9409 && (fdh = get_fdh (hash, htab)) != NULL)
9410 {
8387904d
AM
9411 if (fdh->elf.root.type == bfd_link_hash_defined
9412 || fdh->elf.root.type == bfd_link_hash_defweak)
9413 {
9414 sym_sec = fdh->elf.root.u.def.section;
9415 sym_value = fdh->elf.root.u.def.value;
9416 if (sym_sec->output_section != NULL)
9417 ok_dest = TRUE;
9418 }
99877b66
AM
9419 else
9420 fdh = NULL;
8387904d 9421 }
7fe2b9a6
AM
9422 }
9423 else
9424 {
9425 bfd_set_error (bfd_error_bad_value);
9426 goto error_ret_free_internal;
721956f4
AM
9427 }
9428
8843416a
AM
9429 destination = 0;
9430 if (ok_dest)
9431 {
9432 sym_value += irela->r_addend;
9433 destination = (sym_value
9434 + sym_sec->output_offset
9435 + sym_sec->output_section->vma);
9436 }
9437
8387904d 9438 code_sec = sym_sec;
74f0fb50
AM
9439 opd = get_opd_info (sym_sec);
9440 if (opd != NULL)
8387904d
AM
9441 {
9442 bfd_vma dest;
9443
74f0fb50 9444 if (hash == NULL && opd->adjust != NULL)
8387904d 9445 {
74f0fb50 9446 long adjust = opd->adjust[sym_value / 8];
8387904d
AM
9447 if (adjust == -1)
9448 continue;
9449 sym_value += adjust;
9450 }
9451 dest = opd_entry_value (sym_sec, sym_value,
9452 &code_sec, &sym_value);
9453 if (dest != (bfd_vma) -1)
9454 {
9455 destination = dest;
9456 if (fdh != NULL)
9457 {
9458 /* Fixup old ABI sym to point at code
9459 entry. */
99877b66 9460 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM
9461 hash->elf.root.u.def.section = code_sec;
9462 hash->elf.root.u.def.value = sym_value;
9463 }
9464 }
9465 }
9466
721956f4
AM
9467 /* Determine what (if any) linker stub is needed. */
9468 stub_type = ppc_type_of_stub (section, irela, &hash,
9469 destination);
ad8e1ba5
AM
9470
9471 if (stub_type != ppc_stub_plt_call)
9472 {
9473 /* Check whether we need a TOC adjusting stub.
9474 Since the linker pastes together pieces from
9475 different object files when creating the
9476 _init and _fini functions, it may be that a
9477 call to what looks like a local sym is in
9478 fact a call needing a TOC adjustment. */
8387904d
AM
9479 if (code_sec != NULL
9480 && code_sec->output_section != NULL
9481 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9482 != htab->stub_group[section->id].toc_off)
4c52953f
AM
9483 && (code_sec->has_toc_reloc
9484 || code_sec->makes_toc_func_call))
ad8e1ba5
AM
9485 stub_type = ppc_stub_long_branch_r2off;
9486 }
9487
721956f4
AM
9488 if (stub_type == ppc_stub_none)
9489 continue;
9490
411e1bfb
AM
9491 /* __tls_get_addr calls might be eliminated. */
9492 if (stub_type != ppc_stub_plt_call
9493 && hash != NULL
8387904d
AM
9494 && (hash == htab->tls_get_addr
9495 || hash == htab->tls_get_addr_fd)
411e1bfb
AM
9496 && section->has_tls_reloc
9497 && irela != internal_relocs)
9498 {
9499 /* Get tls info. */
e7b938ca 9500 char *tls_mask;
411e1bfb 9501
0d4792f7 9502 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM
9503 irela - 1, input_bfd))
9504 goto error_ret_free_internal;
e7b938ca 9505 if (*tls_mask != 0)
411e1bfb
AM
9506 continue;
9507 }
9508
721956f4
AM
9509 /* Support for grouping stub sections. */
9510 id_sec = htab->stub_group[section->id].link_sec;
9511
9512 /* Get the name of this stub. */
9513 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9514 if (!stub_name)
9515 goto error_ret_free_internal;
9516
9517 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9518 stub_name, FALSE, FALSE);
721956f4
AM
9519 if (stub_entry != NULL)
9520 {
9521 /* The proper stub has already been created. */
9522 free (stub_name);
9523 continue;
9524 }
9525
9526 stub_entry = ppc_add_stub (stub_name, section, htab);
9527 if (stub_entry == NULL)
9528 {
9529 free (stub_name);
6cdc0ccc
AM
9530 error_ret_free_internal:
9531 if (elf_section_data (section)->relocs == NULL)
9532 free (internal_relocs);
9533 error_ret_free_local:
9534 if (local_syms != NULL
9535 && (symtab_hdr->contents
9536 != (unsigned char *) local_syms))
9537 free (local_syms);
b34976b6 9538 return FALSE;
721956f4
AM
9539 }
9540
ad8e1ba5 9541 stub_entry->stub_type = stub_type;
721956f4 9542 stub_entry->target_value = sym_value;
8387904d 9543 stub_entry->target_section = code_sec;
721956f4 9544 stub_entry->h = hash;
411e1bfb 9545 stub_entry->addend = irela->r_addend;
ee75fd95
AM
9546
9547 if (stub_entry->h != NULL)
9548 htab->stub_globals += 1;
721956f4
AM
9549 }
9550
9551 /* We're done with the internal relocs, free them. */
6cdc0ccc 9552 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9553 free (internal_relocs);
721956f4 9554 }
6cdc0ccc
AM
9555
9556 if (local_syms != NULL
9557 && symtab_hdr->contents != (unsigned char *) local_syms)
9558 {
9559 if (!info->keep_memory)
9560 free (local_syms);
9561 else
9562 symtab_hdr->contents = (unsigned char *) local_syms;
9563 }
721956f4
AM
9564 }
9565
5c3dead3 9566 /* We may have added some stubs. Find out the new size of the
721956f4
AM
9567 stub sections. */
9568 for (stub_sec = htab->stub_bfd->sections;
9569 stub_sec != NULL;
9570 stub_sec = stub_sec->next)
e717da7e 9571 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9572 {
5c3dead3 9573 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM
9574 stub_sec->size = 0;
9575 stub_sec->reloc_count = 0;
84f5d08e 9576 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9577 }
eea6121a
AM
9578
9579 htab->brlt->size = 0;
84f5d08e
AM
9580 htab->brlt->reloc_count = 0;
9581 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9582 if (htab->relbrlt != NULL)
eea6121a 9583 htab->relbrlt->size = 0;
721956f4 9584
63bc6f6c 9585 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9586
5c3dead3
AM
9587 for (stub_sec = htab->stub_bfd->sections;
9588 stub_sec != NULL;
9589 stub_sec = stub_sec->next)
9590 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9591 && stub_sec->rawsize != stub_sec->size)
9592 break;
9593
9594 /* Exit from this loop when no stubs have been added, and no stubs
9595 have changed size. */
9596 if (stub_sec == NULL)
9597 break;
9598
721956f4
AM
9599 /* Ask the linker to do its stuff. */
9600 (*htab->layout_sections_again) ();
9601 }
9602
c456f082 9603 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM
9604 section is empty, but it's too late. If we strip sections here,
9605 the dynamic symbol table is corrupted since the section symbol
9606 for the stripped section isn't written. */
721956f4 9607
b34976b6 9608 return TRUE;
721956f4
AM
9609}
9610
9611/* Called after we have determined section placement. If sections
805fc799 9612 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9613
805fc799 9614bfd_vma
4ce794b7 9615ppc64_elf_toc (bfd *obfd)
721956f4 9616{
805fc799
AM
9617 asection *s;
9618 bfd_vma TOCstart;
721956f4 9619
805fc799
AM
9620 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9621 order. The TOC starts where the first of these sections starts. */
9622 s = bfd_get_section_by_name (obfd, ".got");
9623 if (s == NULL)
9624 s = bfd_get_section_by_name (obfd, ".toc");
9625 if (s == NULL)
9626 s = bfd_get_section_by_name (obfd, ".tocbss");
9627 if (s == NULL)
9628 s = bfd_get_section_by_name (obfd, ".plt");
9629 if (s == NULL)
9630 {
9631 /* This may happen for
9632 o references to TOC base (SYM@toc / TOC[tc0]) without a
9633 .toc directive
9634 o bad linker script
9635 o --gc-sections and empty TOC sections
9636
9637 FIXME: Warn user? */
9638
9639 /* Look for a likely section. We probably won't even be
9640 using TOCstart. */
9641 for (s = obfd->sections; s != NULL; s = s->next)
9642 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9643 == (SEC_ALLOC | SEC_SMALL_DATA))
9644 break;
721956f4 9645 if (s == NULL)
805fc799
AM
9646 for (s = obfd->sections; s != NULL; s = s->next)
9647 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9648 == (SEC_ALLOC | SEC_SMALL_DATA))
9649 break;
721956f4 9650 if (s == NULL)
805fc799
AM
9651 for (s = obfd->sections; s != NULL; s = s->next)
9652 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9653 break;
721956f4 9654 if (s == NULL)
805fc799
AM
9655 for (s = obfd->sections; s != NULL; s = s->next)
9656 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9657 break;
9658 }
721956f4 9659
805fc799
AM
9660 TOCstart = 0;
9661 if (s != NULL)
9662 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9663
805fc799 9664 return TOCstart;
721956f4
AM
9665}
9666
9667/* Build all the stubs associated with the current output file.
9668 The stubs are kept in a hash table attached to the main linker
9669 hash table. This function is called via gldelf64ppc_finish. */
9670
b34976b6 9671bfd_boolean
4ce794b7
AM
9672ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9673 struct bfd_link_info *info,
9674 char **stats)
5d1634d7
AM
9675{
9676 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9677 asection *stub_sec;
5d1634d7 9678 bfd_byte *p;
e717da7e 9679 int stub_sec_count = 0;
5d1634d7 9680
ad8e1ba5 9681 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM
9682
9683 /* Allocate memory to hold the linker stubs. */
721956f4
AM
9684 for (stub_sec = htab->stub_bfd->sections;
9685 stub_sec != NULL;
9686 stub_sec = stub_sec->next)
eea6121a
AM
9687 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9688 && stub_sec->size != 0)
e717da7e 9689 {
eea6121a
AM
9690 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9691 if (stub_sec->contents == NULL)
9692 return FALSE;
9693 /* We want to check that built size is the same as calculated
9694 size. rawsize is a convenient location to use. */
9695 stub_sec->rawsize = stub_sec->size;
9696 stub_sec->size = 0;
e717da7e 9697 }
5d1634d7 9698
23eb7e01 9699 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9700 {
9f951329 9701 unsigned int indx;
ad8e1ba5 9702 bfd_vma plt0;
9f951329 9703
721956f4 9704 /* Build the .glink plt call stub. */
97b639ba
AM
9705 if (htab->emit_stub_syms)
9706 {
9707 struct elf_link_hash_entry *h;
9708 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9709 if (h == NULL)
9710 return FALSE;
9711 if (h->root.type == bfd_link_hash_new)
9712 {
9713 h->root.type = bfd_link_hash_defined;
9714 h->root.u.def.section = htab->glink;
ee4bf8d2 9715 h->root.u.def.value = 8;
f5385ebf
AM
9716 h->ref_regular = 1;
9717 h->def_regular = 1;
9718 h->ref_regular_nonweak = 1;
9719 h->forced_local = 1;
9720 h->non_elf = 0;
97b639ba
AM
9721 }
9722 }
4ce794b7 9723 p = htab->glink->contents;
ee4bf8d2
AM
9724 plt0 = (htab->plt->output_section->vma
9725 + htab->plt->output_offset
9726 - (htab->glink->output_section->vma
9727 + htab->glink->output_offset
9728 + 16));
9729 bfd_put_64 (htab->glink->owner, plt0, p);
9730 p += 8;
9731 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9732 p += 4;
ee4bf8d2 9733 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9734 p += 4;
ee4bf8d2 9735 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9736 p += 4;
ee4bf8d2 9737 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9738 p += 4;
ee4bf8d2 9739 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9740 p += 4;
ee4bf8d2 9741 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9742 p += 4;
ee4bf8d2 9743 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9744 p += 4;
4ce794b7 9745 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9746 p += 4;
4ce794b7 9747 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9748 p += 4;
4ce794b7 9749 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9750 p += 4;
4ce794b7 9751 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9752 p += 4;
ee4bf8d2
AM
9753 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9754 {
9755 bfd_put_32 (htab->glink->owner, NOP, p);
9756 p += 4;
9757 }
ad8e1ba5 9758
9f951329
AM
9759 /* Build the .glink lazy link call stubs. */
9760 indx = 0;
eea6121a 9761 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM
9762 {
9763 if (indx < 0x8000)
9764 {
4ce794b7 9765 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM
9766 p += 4;
9767 }
9768 else
9769 {
4ce794b7 9770 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9771 p += 4;
4ce794b7 9772 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM
9773 p += 4;
9774 }
4ce794b7 9775 bfd_put_32 (htab->glink->owner,
ee4bf8d2 9776 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 9777 indx++;
9f951329
AM
9778 p += 4;
9779 }
eea6121a 9780 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9781 }
5d1634d7 9782
eea6121a 9783 if (htab->brlt->size != 0)
721956f4 9784 {
4ce794b7 9785 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9786 htab->brlt->size);
4ce794b7 9787 if (htab->brlt->contents == NULL)
b34976b6 9788 return FALSE;
721956f4 9789 }
ee75fd95 9790 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM
9791 {
9792 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9793 htab->relbrlt->size);
63bc6f6c
AM
9794 if (htab->relbrlt->contents == NULL)
9795 return FALSE;
9796 }
5d1634d7 9797
721956f4
AM
9798 /* Build the stubs as directed by the stub hash table. */
9799 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9800
aa8a7074
AM
9801 if (htab->relbrlt != NULL)
9802 htab->relbrlt->reloc_count = 0;
9803
721956f4
AM
9804 for (stub_sec = htab->stub_bfd->sections;
9805 stub_sec != NULL;
9806 stub_sec = stub_sec->next)
e717da7e
AM
9807 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9808 {
9809 stub_sec_count += 1;
eea6121a 9810 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM
9811 break;
9812 }
5d1634d7 9813
721956f4 9814 if (stub_sec != NULL
eea6121a 9815 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9816 {
b34976b6 9817 htab->stub_error = TRUE;
721956f4 9818 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9819 }
721956f4 9820
d2a300cf
AM
9821 if (htab->stub_error)
9822 return FALSE;
9823
9824 if (stats != NULL)
9825 {
9826 *stats = bfd_malloc (500);
9827 if (*stats == NULL)
9828 return FALSE;
9829
ee75fd95 9830 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM
9831 " branch %lu\n"
9832 " toc adjust %lu\n"
9833 " long branch %lu\n"
9834 " long toc adj %lu\n"
9835 " plt call %lu"),
e717da7e 9836 stub_sec_count,
ee75fd95 9837 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM
9838 htab->stub_count[ppc_stub_long_branch - 1],
9839 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9840 htab->stub_count[ppc_stub_plt_branch - 1],
9841 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9842 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM
9843 }
9844 return TRUE;
5bd4f169
AM
9845}
9846
99877b66
AM
9847/* This function undoes the changes made by add_symbol_adjust. */
9848
9849static bfd_boolean
9850undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9851{
9852 struct ppc_link_hash_entry *eh;
9853
9854 if (h->root.type == bfd_link_hash_indirect)
9855 return TRUE;
9856
9857 if (h->root.type == bfd_link_hash_warning)
9858 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9859
9860 eh = (struct ppc_link_hash_entry *) h;
9861 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9862 return TRUE;
9863
9864 eh->elf.root.type = bfd_link_hash_undefined;
9865 return TRUE;
9866}
9867
9868void
9869ppc64_elf_restore_symbols (struct bfd_link_info *info)
9870{
9871 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9872 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9873}
9874
60124e18
AM
9875/* What to do when ld finds relocations against symbols defined in
9876 discarded sections. */
9877
9878static unsigned int
9879ppc64_elf_action_discarded (asection *sec)
9880{
9881 if (strcmp (".opd", sec->name) == 0)
9882 return 0;
9883
9884 if (strcmp (".toc", sec->name) == 0)
9885 return 0;
9886
bce50a28
JJ
9887 if (strcmp (".toc1", sec->name) == 0)
9888 return 0;
9889
60124e18
AM
9890 return _bfd_elf_default_action_discarded (sec);
9891}
9892
5bd4f169
AM
9893/* The RELOCATE_SECTION function is called by the ELF backend linker
9894 to handle the relocations for a section.
9895
9896 The relocs are always passed as Rela structures; if the section
9897 actually uses Rel structures, the r_addend field will always be
9898 zero.
9899
9900 This function is responsible for adjust the section contents as
9901 necessary, and (if using Rela relocs and generating a
1049f94e 9902 relocatable output file) adjusting the reloc addend as
5bd4f169
AM
9903 necessary.
9904
9905 This function does not have to worry about setting the reloc
9906 address or the reloc symbol index.
9907
9908 LOCAL_SYMS is a pointer to the swapped in local symbols.
9909
9910 LOCAL_SECTIONS is an array giving the section in the input file
9911 corresponding to the st_shndx field of each local symbol.
9912
9913 The global hash table entry for the global symbols can be found
9914 via elf_sym_hashes (input_bfd).
9915
1049f94e 9916 When generating relocatable output, this function must handle
5bd4f169
AM
9917 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9918 going to be the section symbol corresponding to the output
9919 section, which means that the addend must be adjusted
9920 accordingly. */
9921
b34976b6 9922static bfd_boolean
4ce794b7
AM
9923ppc64_elf_relocate_section (bfd *output_bfd,
9924 struct bfd_link_info *info,
9925 bfd *input_bfd,
9926 asection *input_section,
9927 bfd_byte *contents,
9928 Elf_Internal_Rela *relocs,
9929 Elf_Internal_Sym *local_syms,
9930 asection **local_sections)
5bd4f169 9931{
65f38f15 9932 struct ppc_link_hash_table *htab;
5bd4f169
AM
9933 Elf_Internal_Shdr *symtab_hdr;
9934 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
9935 Elf_Internal_Rela *rel;
9936 Elf_Internal_Rela *relend;
411e1bfb
AM
9937 Elf_Internal_Rela outrel;
9938 bfd_byte *loc;
411e1bfb 9939 struct got_entry **local_got_ents;
5bd4f169 9940 bfd_vma TOCstart;
b34976b6
AM
9941 bfd_boolean ret = TRUE;
9942 bfd_boolean is_opd;
96e0dda4 9943 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9944 bfd_boolean is_power4 = FALSE;
4fe5ca5b 9945 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 9946
65f38f15 9947 /* Initialize howto table if needed. */
5bd4f169 9948 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
9949 ppc_howto_init ();
9950
65f38f15 9951 htab = ppc_hash_table (info);
ee75fd95
AM
9952
9953 /* Don't relocate stub sections. */
9954 if (input_section->owner == htab->stub_bfd)
9955 return TRUE;
9956
0c8d6e5c 9957 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 9958
411e1bfb 9959 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9960 TOCstart = elf_gp (output_bfd);
0ffa91dd 9961 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 9962 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 9963 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 9964
5bd4f169
AM
9965 rel = relocs;
9966 relend = relocs + input_section->reloc_count;
9967 for (; rel < relend; rel++)
9968 {
04c9666a 9969 enum elf_ppc64_reloc_type r_type;
4cc603a5 9970 bfd_vma addend, orig_addend;
5bd4f169
AM
9971 bfd_reloc_status_type r;
9972 Elf_Internal_Sym *sym;
9973 asection *sec;
039b3fef
AM
9974 struct elf_link_hash_entry *h_elf;
9975 struct ppc_link_hash_entry *h;
9976 struct ppc_link_hash_entry *fdh;
5bd4f169 9977 const char *sym_name;
0d4792f7 9978 unsigned long r_symndx, toc_symndx;
951fd09b 9979 char tls_mask, tls_gd, tls_type;
0d4792f7 9980 char sym_type;
5bd4f169 9981 bfd_vma relocation;
b34976b6
AM
9982 bfd_boolean unresolved_reloc;
9983 bfd_boolean warned;
50bc7936 9984 unsigned long insn, mask;
721956f4
AM
9985 struct ppc_stub_hash_entry *stub_entry;
9986 bfd_vma max_br_offset;
9987 bfd_vma from;
5bd4f169 9988
4ce794b7 9989 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9990 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM
9991
9992 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9993 symbol of the previous ADDR64 reloc. The symbol gives us the
9994 proper TOC base to use. */
9995 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9996 && rel != relocs
9997 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9998 && is_opd)
9999 r_symndx = ELF64_R_SYM (rel[-1].r_info);
10000
4ce794b7
AM
10001 sym = NULL;
10002 sec = NULL;
039b3fef 10003 h_elf = NULL;
4ce794b7 10004 sym_name = NULL;
b34976b6
AM
10005 unresolved_reloc = FALSE;
10006 warned = FALSE;
4cc603a5 10007 orig_addend = rel->r_addend;
65f38f15 10008
0b13192e 10009 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM
10010 {
10011 /* It's a local symbol. */
74f0fb50 10012 struct _opd_sec_data *opd;
4025353c 10013
5bd4f169
AM
10014 sym = local_syms + r_symndx;
10015 sec = local_sections[r_symndx];
26c61ae5 10016 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 10017 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 10018 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM
10019 opd = get_opd_info (sec);
10020 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 10021 {
74f0fb50 10022 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM
10023 if (adjust == -1)
10024 relocation = 0;
10025 else
4cc603a5
AM
10026 {
10027 /* If this is a relocation against the opd section sym
10028 and we have edited .opd, adjust the reloc addend so
10029 that ld -r and ld --emit-relocs output is correct.
10030 If it is a reloc against some other .opd symbol,
10031 then the symbol value will be adjusted later. */
10032 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
10033 rel->r_addend += adjust;
10034 else
10035 relocation += adjust;
10036 }
1e2f5b6e 10037 }
5bd4f169
AM
10038 }
10039 else
10040 {
b2a8e766
AM
10041 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
10042 r_symndx, symtab_hdr, sym_hashes,
039b3fef 10043 h_elf, sec, relocation,
b2a8e766 10044 unresolved_reloc, warned);
039b3fef
AM
10045 sym_name = h_elf->root.root.string;
10046 sym_type = h_elf->type;
5bd4f169 10047 }
039b3fef 10048 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 10049
ab96bf03
AM
10050 if (sec != NULL && elf_discarded_section (sec))
10051 {
10052 /* For relocs against symbols from removed linkonce sections,
10053 or sections discarded by a linker script, we just want the
10054 section contents zeroed. Avoid any special processing. */
10055 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10056 contents + rel->r_offset);
10057 rel->r_info = 0;
10058 rel->r_addend = 0;
10059 continue;
10060 }
10061
10062 if (info->relocatable)
10063 continue;
10064
951fd09b
AM
10065 /* TLS optimizations. Replace instruction sequences and relocs
10066 based on information we collected in tls_optimize. We edit
10067 RELOCS so that --emit-relocs will output something sensible
10068 for the final instruction stream. */
10069 tls_mask = 0;
10070 tls_gd = 0;
0d4792f7 10071 toc_symndx = 0;
d881513a 10072 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM
10073 {
10074 if (h != NULL)
039b3fef 10075 tls_mask = h->tls_mask;
411e1bfb
AM
10076 else if (local_got_ents != NULL)
10077 {
e7b938ca
AM
10078 char *lgot_masks;
10079 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10080 tls_mask = lgot_masks[r_symndx];
411e1bfb 10081 }
0d4792f7
AM
10082 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10083 {
10084 /* Check for toc tls entries. */
10085 char *toc_tls;
10086
10087 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10088 rel, input_bfd))
10089 return FALSE;
10090
10091 if (toc_tls)
10092 tls_mask = *toc_tls;
10093 }
10094 }
10095
10096 /* Check that tls relocs are used with tls syms, and non-tls
10097 relocs are used with non-tls syms. */
10098 if (r_symndx != 0
10099 && r_type != R_PPC64_NONE
10100 && (h == NULL
039b3fef
AM
10101 || h->elf.root.type == bfd_link_hash_defined
10102 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM
10103 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
10104 {
10105 if (r_type == R_PPC64_TLS && tls_mask != 0)
10106 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10107 ;
10108 else
10109 (*_bfd_error_handler)
10110 (sym_type == STT_TLS
d003868e
AM
10111 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10112 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10113 input_bfd,
10114 input_section,
0d4792f7
AM
10115 (long) rel->r_offset,
10116 ppc64_elf_howto_table[r_type]->name,
10117 sym_name);
411e1bfb
AM
10118 }
10119
10120 /* Ensure reloc mapping code below stays sane. */
10121 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10122 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10123 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10124 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10125 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10126 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10127 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10128 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10129 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10130 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10131 abort ();
0d4792f7 10132
411e1bfb
AM
10133 switch (r_type)
10134 {
10135 default:
411e1bfb
AM
10136 break;
10137
10138 case R_PPC64_TOC16:
10139 case R_PPC64_TOC16_LO:
10140 case R_PPC64_TOC16_DS:
10141 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM
10142 {
10143 /* Check for toc tls entries. */
10144 char *toc_tls;
951fd09b 10145 int retval;
411e1bfb 10146
0d4792f7
AM
10147 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10148 rel, input_bfd);
951fd09b 10149 if (retval == 0)
411e1bfb
AM
10150 return FALSE;
10151
10152 if (toc_tls)
10153 {
951fd09b 10154 tls_mask = *toc_tls;
411e1bfb
AM
10155 if (r_type == R_PPC64_TOC16_DS
10156 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM
10157 {
10158 if (tls_mask != 0
10159 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10160 goto toctprel;
10161 }
411e1bfb 10162 else
951fd09b
AM
10163 {
10164 /* If we found a GD reloc pair, then we might be
10165 doing a GD->IE transition. */
10166 if (retval == 2)
10167 {
10168 tls_gd = TLS_TPRELGD;
10169 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10170 goto tls_ldgd_opt;
951fd09b
AM
10171 }
10172 else if (retval == 3)
10173 {
10174 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 10175 goto tls_ldgd_opt;
951fd09b
AM
10176 }
10177 }
411e1bfb
AM
10178 }
10179 }
10180 break;
10181
10182 case R_PPC64_GOT_TPREL16_DS:
10183 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM
10184 if (tls_mask != 0
10185 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10186 {
81407a69 10187 toctprel:
4fe5ca5b 10188 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM
10189 insn &= 31 << 21;
10190 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10191 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10192 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM
10193 if (toc_symndx != 0)
10194 {
10195 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10196 /* We changed the symbol. Start over in order to
10197 get h, sym, sec etc. right. */
10198 rel--;
10199 continue;
10200 }
10201 else
10202 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10203 }
10204 break;
10205
10206 case R_PPC64_TLS:
951fd09b
AM
10207 if (tls_mask != 0
10208 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10209 {
50bc7936 10210 bfd_vma rtra;
411e1bfb 10211 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10212 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM
10213 == ((31 << 26) | (13 << 11)))
10214 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10215 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM
10216 == ((31 << 26) | (13 << 16)))
10217 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10218 else
10219 abort ();
10220 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10221 /* add -> addi. */
10222 insn = 14 << 26;
10223 else if ((insn & (31 << 1)) == 23 << 1
10224 && ((insn & (31 << 6)) < 14 << 6
10225 || ((insn & (31 << 6)) >= 16 << 6
10226 && (insn & (31 << 6)) < 24 << 6)))
10227 /* load and store indexed -> dform. */
10228 insn = (32 | ((insn >> 6) & 31)) << 26;
10229 else if ((insn & (31 << 1)) == 21 << 1
10230 && (insn & (0x1a << 6)) == 0)
10231 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10232 insn = (((58 | ((insn >> 6) & 4)) << 26)
10233 | ((insn >> 6) & 1));
10234 else if ((insn & (31 << 1)) == 21 << 1
10235 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10236 /* lwax -> lwa. */
10237 insn = (58 << 26) | 2;
10238 else
10239 abort ();
10240 insn |= rtra;
10241 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10242 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM
10243 PPC64_TPREL16_LO which is at low-order half-word. */
10244 rel->r_offset += d_offset;
0d4792f7
AM
10245 r_type = R_PPC64_TPREL16_LO;
10246 if (toc_symndx != 0)
10247 {
10248 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10249 /* We changed the symbol. Start over in order to
10250 get h, sym, sec etc. right. */
10251 rel--;
10252 continue;
10253 }
10254 else
10255 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10256 }
10257 break;
10258
411e1bfb
AM
10259 case R_PPC64_GOT_TLSGD16_HI:
10260 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM
10261 tls_gd = TLS_TPRELGD;
10262 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10263 goto tls_gdld_hi;
10264 break;
10265
411e1bfb
AM
10266 case R_PPC64_GOT_TLSLD16_HI:
10267 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10268 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10269 {
951fd09b
AM
10270 tls_gdld_hi:
10271 if ((tls_mask & tls_gd) != 0)
10272 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10273 + R_PPC64_GOT_TPREL16_DS);
10274 else
411e1bfb 10275 {
951fd09b 10276 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10277 rel->r_offset -= d_offset;
951fd09b 10278 r_type = R_PPC64_NONE;
411e1bfb 10279 }
951fd09b 10280 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10281 }
10282 break;
10283
951fd09b
AM
10284 case R_PPC64_GOT_TLSGD16:
10285 case R_PPC64_GOT_TLSGD16_LO:
10286 tls_gd = TLS_TPRELGD;
10287 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10288 goto tls_ldgd_opt;
951fd09b 10289 break;
411e1bfb 10290
951fd09b
AM
10291 case R_PPC64_GOT_TLSLD16:
10292 case R_PPC64_GOT_TLSLD16_LO:
10293 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10294 {
102890f0
AM
10295 bfd_vma insn1, insn2, insn3;
10296 bfd_vma offset;
10297
10298 tls_ldgd_opt:
10299 /* We know that the next reloc is on a tls_get_addr
10300 call, since ppc64_elf_tls_optimize checks this. */
10301 offset = rel[1].r_offset;
10302 insn1 = bfd_get_32 (output_bfd,
10303 contents + rel->r_offset - d_offset);
10304 insn3 = bfd_get_32 (output_bfd,
10305 contents + offset + 4);
10306 if ((tls_mask & tls_gd) != 0)
411e1bfb 10307 {
102890f0
AM
10308 /* IE */
10309 insn1 &= (1 << 26) - (1 << 2);
10310 insn1 |= 58 << 26; /* ld */
10311 insn2 = 0x7c636a14; /* add 3,3,13 */
10312 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
10313 R_PPC64_NONE);
10314 if ((tls_mask & TLS_EXPLICIT) == 0)
10315 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10316 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 10317 else
102890f0
AM
10318 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10319 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10320 }
10321 else
10322 {
10323 /* LE */
10324 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10325 insn2 = 0x38630000; /* addi 3,3,0 */
10326 if (tls_gd == 0)
951fd09b 10327 {
102890f0
AM
10328 /* Was an LD reloc. */
10329 r_symndx = 0;
10330 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10331 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 10332 }
102890f0
AM
10333 else if (toc_symndx != 0)
10334 r_symndx = toc_symndx;
10335 r_type = R_PPC64_TPREL16_HA;
10336 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10337 rel[1].r_info = ELF64_R_INFO (r_symndx,
10338 R_PPC64_TPREL16_LO);
10339 rel[1].r_offset += d_offset;
10340 }
10341 if (insn3 == NOP
10342 || insn3 == CROR_151515 || insn3 == CROR_313131)
10343 {
10344 insn3 = insn2;
10345 insn2 = NOP;
10346 rel[1].r_offset += 4;
10347 }
10348 bfd_put_32 (output_bfd, insn1,
10349 contents + rel->r_offset - d_offset);
10350 bfd_put_32 (output_bfd, insn2, contents + offset);
10351 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10352 if (tls_gd == 0 || toc_symndx != 0)
10353 {
10354 /* We changed the symbol. Start over in order
10355 to get h, sym, sec etc. right. */
10356 rel--;
10357 continue;
411e1bfb 10358 }
411e1bfb 10359 }
411e1bfb
AM
10360 break;
10361
10362 case R_PPC64_DTPMOD64:
951fd09b
AM
10363 if (rel + 1 < relend
10364 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10365 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10366 {
951fd09b
AM
10367 if ((tls_mask & TLS_GD) == 0)
10368 {
10369 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10370 if ((tls_mask & TLS_TPRELGD) != 0)
10371 r_type = R_PPC64_TPREL64;
10372 else
10373 {
4ce794b7 10374 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM
10375 r_type = R_PPC64_NONE;
10376 }
10377 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10378 }
10379 }
10380 else
10381 {
10382 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10383 {
4ce794b7 10384 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10385 r_type = R_PPC64_NONE;
951fd09b 10386 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10387 }
411e1bfb
AM
10388 }
10389 break;
10390
10391 case R_PPC64_TPREL64:
951fd09b 10392 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM
10393 {
10394 r_type = R_PPC64_NONE;
10395 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10396 }
10397 break;
10398 }
10399
10400 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10401 insn = 0;
b25116a9
AM
10402 max_br_offset = 1 << 25;
10403 addend = rel->r_addend;
65f38f15 10404 switch (r_type)
5bd4f169
AM
10405 {
10406 default:
65f38f15 10407 break;
5bd4f169 10408
65f38f15
AM
10409 /* Branch taken prediction relocations. */
10410 case R_PPC64_ADDR14_BRTAKEN:
10411 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH
10412 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10413 /* Fall thru. */
65f38f15 10414
86c76c7b 10415 /* Branch not taken prediction relocations. */
65f38f15
AM
10416 case R_PPC64_ADDR14_BRNTAKEN:
10417 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM
10418 insn |= bfd_get_32 (output_bfd,
10419 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10420 /* Fall thru. */
86c76c7b 10421
b25116a9
AM
10422 case R_PPC64_REL14:
10423 max_br_offset = 1 << 15;
10424 /* Fall thru. */
5bd4f169 10425
65f38f15 10426 case R_PPC64_REL24:
ad8e1ba5
AM
10427 /* Calls to functions with a different TOC, such as calls to
10428 shared objects, need to alter the TOC pointer. This is
10429 done using a linkage stub. A REL24 branching to these
10430 linkage stubs needs to be followed by a nop, as the nop
10431 will be replaced with an instruction to restore the TOC
10432 base pointer. */
b25116a9 10433 stub_entry = NULL;
8387904d 10434 fdh = h;
ad8e1ba5 10435 if (((h != NULL
039b3fef
AM
10436 && (((fdh = h->oh) != NULL
10437 && fdh->elf.plt.plist != NULL)
10438 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10439 || (sec != NULL
ad8e1ba5 10440 && sec->output_section != NULL
b25116a9 10441 && sec->id <= htab->top_id
ad8e1ba5
AM
10442 && (htab->stub_group[sec->id].toc_off
10443 != htab->stub_group[input_section->id].toc_off)))
721956f4 10444 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM
10445 rel, htab)) != NULL
10446 && (stub_entry->stub_type == ppc_stub_plt_call
10447 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10448 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10449 {
b25116a9 10450 bfd_boolean can_plt_call = FALSE;
721956f4 10451
eea6121a 10452 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10453 {
b25116a9
AM
10454 unsigned long nop;
10455 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10456 if (nop == NOP
10457 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10458 {
4ce794b7 10459 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10460 contents + rel->r_offset + 4);
b25116a9 10461 can_plt_call = TRUE;
41bd81ab 10462 }
5bd4f169 10463 }
721956f4
AM
10464
10465 if (!can_plt_call)
10466 {
ad8e1ba5
AM
10467 if (stub_entry->stub_type == ppc_stub_plt_call)
10468 {
10469 /* If this is a plain branch rather than a branch
4fa1c237
AM
10470 and link, don't require a nop. However, don't
10471 allow tail calls in a shared library as they
10472 will result in r2 being corrupted. */
b25116a9
AM
10473 unsigned long br;
10474 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10475 if (info->executable && (br & 1) == 0)
b25116a9 10476 can_plt_call = TRUE;
15b552e9
AM
10477 else
10478 stub_entry = NULL;
ad8e1ba5 10479 }
6ab189d5 10480 else if (h != NULL
039b3fef 10481 && strcmp (h->elf.root.root.string,
6ab189d5
AM
10482 ".__libc_start_main") == 0)
10483 {
10484 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10485 can_plt_call = TRUE;
6ab189d5 10486 }
ad8e1ba5
AM
10487 else
10488 {
10489 if (strcmp (input_section->output_section->name,
10490 ".init") == 0
10491 || strcmp (input_section->output_section->name,
10492 ".fini") == 0)
10493 (*_bfd_error_handler)
d003868e 10494 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM
10495 "not supported using your crt files; "
10496 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM
10497 input_bfd,
10498 input_section,
ad8e1ba5
AM
10499 (long) rel->r_offset);
10500 else
10501 (*_bfd_error_handler)
d003868e 10502 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM
10503 "does not allow automatic multiple TOCs; "
10504 "recompile with -mminimal-toc or "
10505 "-fno-optimize-sibling-calls, "
10506 "or make `%s' extern"),
d003868e
AM
10507 input_bfd,
10508 input_section,
ad8e1ba5
AM
10509 (long) rel->r_offset,
10510 sym_name,
10511 sym_name);
10512 bfd_set_error (bfd_error_bad_value);
10513 ret = FALSE;
10514 }
721956f4
AM
10515 }
10516
b25116a9
AM
10517 if (can_plt_call
10518 && stub_entry->stub_type == ppc_stub_plt_call)
10519 unresolved_reloc = FALSE;
10520 }
10521
8387904d
AM
10522 if (stub_entry == NULL
10523 && get_opd_info (sec) != NULL)
10524 {
10525 /* The branch destination is the value of the opd entry. */
4cc603a5
AM
10526 bfd_vma off = (relocation + addend
10527 - sec->output_section->vma
10528 - sec->output_offset);
8387904d
AM
10529 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10530 if (dest != (bfd_vma) -1)
10531 {
10532 relocation = dest;
10533 addend = 0;
10534 }
10535 }
10536
b25116a9
AM
10537 /* If the branch is out of reach we ought to have a long
10538 branch stub. */
10539 from = (rel->r_offset
10540 + input_section->output_offset
10541 + input_section->output_section->vma);
10542
10543 if (stub_entry == NULL
4cc603a5 10544 && (relocation + addend - from + max_br_offset
b25116a9
AM
10545 >= 2 * max_br_offset)
10546 && r_type != R_PPC64_ADDR14_BRTAKEN
10547 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM
10548 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10549 htab);
b25116a9
AM
10550
10551 if (stub_entry != NULL)
10552 {
10553 /* Munge up the value and addend so that we call the stub
10554 rather than the procedure directly. */
10555 relocation = (stub_entry->stub_offset
10556 + stub_entry->stub_sec->output_offset
10557 + stub_entry->stub_sec->output_section->vma);
10558 addend = 0;
10559 }
10560
10561 if (insn != 0)
10562 {
10563 if (is_power4)
721956f4 10564 {
b25116a9
AM
10565 /* Set 'a' bit. This is 0b00010 in BO field for branch
10566 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10567 for branch on CTR insns (BO == 1a00t or 1a01t). */
10568 if ((insn & (0x14 << 21)) == (0x04 << 21))
10569 insn |= 0x02 << 21;
10570 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10571 insn |= 0x08 << 21;
10572 else
10573 break;
10574 }
10575 else
10576 {
10577 /* Invert 'y' bit if not the default. */
4cc603a5 10578 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10579 insn ^= 0x01 << 21;
721956f4 10580 }
b25116a9
AM
10581
10582 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10583 }
e86ce104 10584
06da1e8e
AM
10585 /* NOP out calls to undefined weak functions.
10586 We can thus call a weak function without first
10587 checking whether the function is defined. */
b25116a9 10588 else if (h != NULL
039b3fef 10589 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM
10590 && r_type == R_PPC64_REL24
10591 && relocation == 0
4cc603a5 10592 && addend == 0)
e86ce104 10593 {
06da1e8e
AM
10594 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10595 continue;
e86ce104 10596 }
65f38f15
AM
10597 break;
10598 }
5bd4f169 10599
65f38f15 10600 /* Set `addend'. */
411e1bfb 10601 tls_type = 0;
65f38f15
AM
10602 switch (r_type)
10603 {
10604 default:
10605 (*_bfd_error_handler)
d003868e
AM
10606 (_("%B: unknown relocation type %d for symbol %s"),
10607 input_bfd, (int) r_type, sym_name);
5bd4f169 10608
65f38f15 10609 bfd_set_error (bfd_error_bad_value);
b34976b6 10610 ret = FALSE;
65f38f15 10611 continue;
5bd4f169 10612
65f38f15 10613 case R_PPC64_NONE:
411e1bfb 10614 case R_PPC64_TLS:
04c9666a
AM
10615 case R_PPC64_GNU_VTINHERIT:
10616 case R_PPC64_GNU_VTENTRY:
65f38f15 10617 continue;
5bd4f169
AM
10618
10619 /* GOT16 relocations. Like an ADDR16 using the symbol's
10620 address in the GOT as relocation value instead of the
411e1bfb 10621 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10622 symbol and put the symbol value there. */
411e1bfb
AM
10623 case R_PPC64_GOT_TLSGD16:
10624 case R_PPC64_GOT_TLSGD16_LO:
10625 case R_PPC64_GOT_TLSGD16_HI:
10626 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10627 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
10628 goto dogot;
10629
10630 case R_PPC64_GOT_TLSLD16:
10631 case R_PPC64_GOT_TLSLD16_LO:
10632 case R_PPC64_GOT_TLSLD16_HI:
10633 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10634 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
10635 goto dogot;
10636
10637 case R_PPC64_GOT_TPREL16_DS:
10638 case R_PPC64_GOT_TPREL16_LO_DS:
10639 case R_PPC64_GOT_TPREL16_HI:
10640 case R_PPC64_GOT_TPREL16_HA:
10641 tls_type = TLS_TLS | TLS_TPREL;
10642 goto dogot;
10643
10644 case R_PPC64_GOT_DTPREL16_DS:
10645 case R_PPC64_GOT_DTPREL16_LO_DS:
10646 case R_PPC64_GOT_DTPREL16_HI:
10647 case R_PPC64_GOT_DTPREL16_HA:
10648 tls_type = TLS_TLS | TLS_DTPREL;
10649 goto dogot;
10650
65f38f15
AM
10651 case R_PPC64_GOT16:
10652 case R_PPC64_GOT16_LO:
10653 case R_PPC64_GOT16_HI:
10654 case R_PPC64_GOT16_HA:
10655 case R_PPC64_GOT16_DS:
10656 case R_PPC64_GOT16_LO_DS:
411e1bfb 10657 dogot:
5bd4f169
AM
10658 {
10659 /* Relocation is to the entry for this symbol in the global
10660 offset table. */
e717da7e 10661 asection *got;
d881513a 10662 bfd_vma *offp;
5bd4f169 10663 bfd_vma off;
d881513a 10664 unsigned long indx = 0;
65f38f15 10665
d881513a
AM
10666 if (tls_type == (TLS_TLS | TLS_LD)
10667 && (h == NULL
f5385ebf 10668 || !h->elf.def_dynamic))
e717da7e 10669 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10670 else
5bd4f169 10671 {
d881513a 10672 struct got_entry *ent;
5bd4f169 10673
d881513a
AM
10674 if (h != NULL)
10675 {
10676 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM
10677 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10678 &h->elf)
d881513a 10679 || (info->shared
039b3fef 10680 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM
10681 /* This is actually a static link, or it is a
10682 -Bsymbolic link and the symbol is defined
10683 locally, or the symbol was forced to be local
10684 because of a version file. */
10685 ;
10686 else
10687 {
039b3fef 10688 indx = h->elf.dynindx;
d881513a
AM
10689 unresolved_reloc = FALSE;
10690 }
039b3fef 10691 ent = h->elf.got.glist;
d881513a 10692 }
411e1bfb 10693 else
5bd4f169 10694 {
d881513a
AM
10695 if (local_got_ents == NULL)
10696 abort ();
10697 ent = local_got_ents[r_symndx];
5bd4f169 10698 }
d881513a
AM
10699
10700 for (; ent != NULL; ent = ent->next)
4cc603a5 10701 if (ent->addend == orig_addend
e717da7e 10702 && ent->owner == input_bfd
d881513a
AM
10703 && ent->tls_type == tls_type)
10704 break;
10705 if (ent == NULL)
10706 abort ();
10707 offp = &ent->got.offset;
5bd4f169 10708 }
411e1bfb 10709
e717da7e
AM
10710 got = ppc64_elf_tdata (input_bfd)->got;
10711 if (got == NULL)
10712 abort ();
10713
411e1bfb
AM
10714 /* The offset must always be a multiple of 8. We use the
10715 least significant bit to record whether we have already
10716 processed this entry. */
d881513a 10717 off = *offp;
411e1bfb
AM
10718 if ((off & 1) != 0)
10719 off &= ~1;
5bd4f169
AM
10720 else
10721 {
411e1bfb
AM
10722 /* Generate relocs for the dynamic linker, except in
10723 the case of TLSLD where we'll use one entry per
10724 module. */
e717da7e
AM
10725 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10726
d881513a 10727 *offp = off | 1;
4e795f50
AM
10728 if ((info->shared || indx != 0)
10729 && (h == NULL
039b3fef
AM
10730 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10731 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10732 {
e717da7e
AM
10733 outrel.r_offset = (got->output_section->vma
10734 + got->output_offset
411e1bfb 10735 + off);
4cc603a5 10736 outrel.r_addend = addend;
d881513a 10737 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10738 {
411e1bfb 10739 outrel.r_addend = 0;
e515b051 10740 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM
10741 if (tls_type == (TLS_TLS | TLS_GD))
10742 {
e717da7e
AM
10743 loc = relgot->contents;
10744 loc += (relgot->reloc_count++
d881513a
AM
10745 * sizeof (Elf64_External_Rela));
10746 bfd_elf64_swap_reloca_out (output_bfd,
10747 &outrel, loc);
e515b051 10748 outrel.r_offset += 8;
4cc603a5 10749 outrel.r_addend = addend;
d881513a
AM
10750 outrel.r_info
10751 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10752 }
411e1bfb 10753 }
951fd09b 10754 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10755 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10756 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM
10757 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10758 else if (indx == 0)
81407a69
AM
10759 {
10760 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10761
10762 /* Write the .got section contents for the sake
10763 of prelink. */
e717da7e 10764 loc = got->contents + off;
23fbd6fa
JJ
10765 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10766 loc);
81407a69 10767 }
411e1bfb
AM
10768 else
10769 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM
10770
10771 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM
10772 {
10773 outrel.r_addend += relocation;
10774 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10775 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10776 }
e717da7e
AM
10777 loc = relgot->contents;
10778 loc += (relgot->reloc_count++
411e1bfb
AM
10779 * sizeof (Elf64_External_Rela));
10780 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10781 }
10782
ad8e1ba5 10783 /* Init the .got section contents here if we're not
81407a69 10784 emitting a reloc. */
d881513a 10785 else
411e1bfb 10786 {
4cc603a5 10787 relocation += addend;
7b609f53
AM
10788 if (tls_type == (TLS_TLS | TLS_LD))
10789 relocation = 1;
10790 else if (tls_type != 0)
411e1bfb 10791 {
e1918d23 10792 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10793 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10794 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10795
7b609f53
AM
10796 if (tls_type == (TLS_TLS | TLS_GD))
10797 {
10798 bfd_put_64 (output_bfd, relocation,
e717da7e 10799 got->contents + off + 8);
7b609f53
AM
10800 relocation = 1;
10801 }
411e1bfb 10802 }
7b609f53 10803
411e1bfb 10804 bfd_put_64 (output_bfd, relocation,
e717da7e 10805 got->contents + off);
5bd4f169
AM
10806 }
10807 }
10808
65f38f15
AM
10809 if (off >= (bfd_vma) -2)
10810 abort ();
10811
e717da7e 10812 relocation = got->output_offset + off;
65f38f15 10813
5bd4f169 10814 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10815 addend = -TOC_BASE_OFF;
5bd4f169 10816 }
65f38f15
AM
10817 break;
10818
10819 case R_PPC64_PLT16_HA:
10820 case R_PPC64_PLT16_HI:
10821 case R_PPC64_PLT16_LO:
10822 case R_PPC64_PLT32:
10823 case R_PPC64_PLT64:
10824 /* Relocation is to the entry for this symbol in the
10825 procedure linkage table. */
10826
10827 /* Resolve a PLT reloc against a local symbol directly,
10828 without using the procedure linkage table. */
10829 if (h == NULL)
10830 break;
10831
411e1bfb
AM
10832 /* It's possible that we didn't make a PLT entry for this
10833 symbol. This happens when statically linking PIC code,
10834 or when using -Bsymbolic. Go find a match if there is a
10835 PLT entry. */
4ce794b7 10836 if (htab->plt != NULL)
65f38f15 10837 {
411e1bfb 10838 struct plt_entry *ent;
039b3fef 10839 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 10840 if (ent->addend == orig_addend
411e1bfb
AM
10841 && ent->plt.offset != (bfd_vma) -1)
10842 {
4ce794b7
AM
10843 relocation = (htab->plt->output_section->vma
10844 + htab->plt->output_offset
411e1bfb
AM
10845 + ent->plt.offset);
10846 unresolved_reloc = FALSE;
10847 }
65f38f15 10848 }
65f38f15 10849 break;
5bd4f169 10850
0b13192e
AM
10851 case R_PPC64_TOC:
10852 /* Relocation value is TOC base. */
10853 relocation = TOCstart;
10854 if (r_symndx == 0)
10855 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM
10856 else if (unresolved_reloc)
10857 ;
10858 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM
10859 relocation += htab->stub_group[sec->id].toc_off;
10860 else
10861 unresolved_reloc = TRUE;
ab96bf03 10862 goto dodyn;
0b13192e 10863
5bd4f169
AM
10864 /* TOC16 relocs. We want the offset relative to the TOC base,
10865 which is the address of the start of the TOC plus 0x8000.
10866 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10867 in this order. */
65f38f15
AM
10868 case R_PPC64_TOC16:
10869 case R_PPC64_TOC16_LO:
10870 case R_PPC64_TOC16_HI:
10871 case R_PPC64_TOC16_DS:
10872 case R_PPC64_TOC16_LO_DS:
10873 case R_PPC64_TOC16_HA:
ad8e1ba5 10874 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM
10875 break;
10876
10877 /* Relocate against the beginning of the section. */
65f38f15
AM
10878 case R_PPC64_SECTOFF:
10879 case R_PPC64_SECTOFF_LO:
10880 case R_PPC64_SECTOFF_HI:
10881 case R_PPC64_SECTOFF_DS:
10882 case R_PPC64_SECTOFF_LO_DS:
10883 case R_PPC64_SECTOFF_HA:
4ce794b7 10884 if (sec != NULL)
65f38f15 10885 addend -= sec->output_section->vma;
5bd4f169
AM
10886 break;
10887
721956f4
AM
10888 case R_PPC64_REL14:
10889 case R_PPC64_REL14_BRNTAKEN:
10890 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM
10891 case R_PPC64_REL24:
10892 break;
10893
411e1bfb
AM
10894 case R_PPC64_TPREL16:
10895 case R_PPC64_TPREL16_LO:
10896 case R_PPC64_TPREL16_HI:
10897 case R_PPC64_TPREL16_HA:
10898 case R_PPC64_TPREL16_DS:
10899 case R_PPC64_TPREL16_LO_DS:
10900 case R_PPC64_TPREL16_HIGHER:
10901 case R_PPC64_TPREL16_HIGHERA:
10902 case R_PPC64_TPREL16_HIGHEST:
10903 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10904 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
10905 if (info->shared)
10906 /* The TPREL16 relocs shouldn't really be used in shared
10907 libs as they will result in DT_TEXTREL being set, but
10908 support them anyway. */
10909 goto dodyn;
10910 break;
10911
10912 case R_PPC64_DTPREL16:
10913 case R_PPC64_DTPREL16_LO:
10914 case R_PPC64_DTPREL16_HI:
10915 case R_PPC64_DTPREL16_HA:
10916 case R_PPC64_DTPREL16_DS:
10917 case R_PPC64_DTPREL16_LO_DS:
10918 case R_PPC64_DTPREL16_HIGHER:
10919 case R_PPC64_DTPREL16_HIGHERA:
10920 case R_PPC64_DTPREL16_HIGHEST:
10921 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10922 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
10923 break;
10924
e515b051
AM
10925 case R_PPC64_DTPMOD64:
10926 relocation = 1;
10927 addend = 0;
10928 goto dodyn;
10929
411e1bfb 10930 case R_PPC64_TPREL64:
e1918d23 10931 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
10932 goto dodyn;
10933
10934 case R_PPC64_DTPREL64:
e1918d23 10935 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
10936 /* Fall thru */
10937
65f38f15
AM
10938 /* Relocations that may need to be propagated if this is a
10939 dynamic object. */
04c9666a 10940 case R_PPC64_REL30:
65f38f15
AM
10941 case R_PPC64_REL32:
10942 case R_PPC64_REL64:
10943 case R_PPC64_ADDR14:
10944 case R_PPC64_ADDR14_BRNTAKEN:
10945 case R_PPC64_ADDR14_BRTAKEN:
10946 case R_PPC64_ADDR16:
10947 case R_PPC64_ADDR16_DS:
10948 case R_PPC64_ADDR16_HA:
10949 case R_PPC64_ADDR16_HI:
10950 case R_PPC64_ADDR16_HIGHER:
10951 case R_PPC64_ADDR16_HIGHERA:
10952 case R_PPC64_ADDR16_HIGHEST:
10953 case R_PPC64_ADDR16_HIGHESTA:
10954 case R_PPC64_ADDR16_LO:
10955 case R_PPC64_ADDR16_LO_DS:
10956 case R_PPC64_ADDR24:
65f38f15
AM
10957 case R_PPC64_ADDR32:
10958 case R_PPC64_ADDR64:
10959 case R_PPC64_UADDR16:
10960 case R_PPC64_UADDR32:
10961 case R_PPC64_UADDR64:
411e1bfb 10962 dodyn:
5d1634d7 10963 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
10964 break;
10965
41bd81ab
AM
10966 if (NO_OPD_RELOCS && is_opd)
10967 break;
10968
65f38f15 10969 if ((info->shared
4e795f50 10970 && (h == NULL
039b3fef
AM
10971 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10972 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10973 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10974 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM
10975 || (ELIMINATE_COPY_RELOCS
10976 && !info->shared
65f38f15 10977 && h != NULL
039b3fef 10978 && h->elf.dynindx != -1
f5385ebf
AM
10979 && !h->elf.non_got_ref
10980 && h->elf.def_dynamic
10981 && !h->elf.def_regular))
65f38f15
AM
10982 {
10983 Elf_Internal_Rela outrel;
b34976b6 10984 bfd_boolean skip, relocate;
65f38f15 10985 asection *sreloc;
947216bf 10986 bfd_byte *loc;
1cf1f670 10987 bfd_vma out_off;
65f38f15
AM
10988
10989 /* When generating a dynamic object, these relocations
10990 are copied into the output file to be resolved at run
10991 time. */
10992
b34976b6
AM
10993 skip = FALSE;
10994 relocate = FALSE;
65f38f15 10995
1cf1f670
AM
10996 out_off = _bfd_elf_section_offset (output_bfd, info,
10997 input_section, rel->r_offset);
10998 if (out_off == (bfd_vma) -1)
b34976b6 10999 skip = TRUE;
1cf1f670 11000 else if (out_off == (bfd_vma) -2)
b34976b6 11001 skip = TRUE, relocate = TRUE;
1cf1f670
AM
11002 out_off += (input_section->output_section->vma
11003 + input_section->output_offset);
11004 outrel.r_offset = out_off;
411e1bfb 11005 outrel.r_addend = rel->r_addend;
65f38f15 11006
1cf1f670
AM
11007 /* Optimize unaligned reloc use. */
11008 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
11009 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
11010 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
11011 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
11012 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
11013 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
11014 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
11015 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
11016 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
11017
65f38f15 11018 if (skip)
0bb2d96a 11019 memset (&outrel, 0, sizeof outrel);
039b3fef 11020 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM
11021 && !is_opd
11022 && r_type != R_PPC64_TOC)
039b3fef 11023 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM
11024 else
11025 {
41bd81ab
AM
11026 /* This symbol is local, or marked to become local,
11027 or this is an opd section reloc which must point
11028 at a local function. */
65f38f15 11029 outrel.r_addend += relocation;
e86ce104 11030 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 11031 {
3fad3c7c 11032 if (is_opd && h != NULL)
afbe61cf
AM
11033 {
11034 /* Lie about opd entries. This case occurs
11035 when building shared libraries and we
11036 reference a function in another shared
3fad3c7c
AM
11037 lib. The same thing happens for a weak
11038 definition in an application that's
11039 overridden by a strong definition in a
11040 shared lib. (I believe this is a generic
11041 bug in binutils handling of weak syms.)
11042 In these cases we won't use the opd
1e2f5b6e 11043 entry in this lib. */
b34976b6 11044 unresolved_reloc = FALSE;
afbe61cf 11045 }
65f38f15 11046 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM
11047
11048 /* We need to relocate .opd contents for ld.so.
11049 Prelink also wants simple and consistent rules
11050 for relocs. This make all RELATIVE relocs have
11051 *r_offset equal to r_addend. */
11052 relocate = TRUE;
65f38f15
AM
11053 }
11054 else
11055 {
11056 long indx = 0;
11057
41bd81ab 11058 if (bfd_is_abs_section (sec))
65f38f15
AM
11059 ;
11060 else if (sec == NULL || sec->owner == NULL)
11061 {
11062 bfd_set_error (bfd_error_bad_value);
b34976b6 11063 return FALSE;
65f38f15
AM
11064 }
11065 else
11066 {
11067 asection *osec;
11068
11069 osec = sec->output_section;
11070 indx = elf_section_data (osec)->dynindx;
11071
74541ad4
AM
11072 if (indx == 0)
11073 {
11074 if ((osec->flags & SEC_READONLY) == 0
11075 && htab->elf.data_index_section != NULL)
11076 osec = htab->elf.data_index_section;
11077 else
11078 osec = htab->elf.text_index_section;
11079 indx = elf_section_data (osec)->dynindx;
11080 }
11081 BFD_ASSERT (indx != 0);
11082
65f38f15
AM
11083 /* We are turning this relocation into one
11084 against a section symbol, so subtract out
11085 the output section's address but not the
11086 offset of the input section in the output
11087 section. */
11088 outrel.r_addend -= osec->vma;
11089 }
11090
11091 outrel.r_info = ELF64_R_INFO (indx, r_type);
11092 }
11093 }
11094
11095 sreloc = elf_section_data (input_section)->sreloc;
11096 if (sreloc == NULL)
11097 abort ();
11098
dfbb6ac9
AM
11099 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11100 >= sreloc->size)
11101 abort ();
947216bf
AM
11102 loc = sreloc->contents;
11103 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM
11104 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11105
11106 /* If this reloc is against an external symbol, it will
11107 be computed at runtime, so there's no need to do
81407a69
AM
11108 anything now. However, for the sake of prelink ensure
11109 that the section contents are a known value. */
65f38f15 11110 if (! relocate)
81407a69
AM
11111 {
11112 unresolved_reloc = FALSE;
11113 /* The value chosen here is quite arbitrary as ld.so
11114 ignores section contents except for the special
11115 case of .opd where the contents might be accessed
11116 before relocation. Choose zero, as that won't
11117 cause reloc overflow. */
11118 relocation = 0;
11119 addend = 0;
11120 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11121 to improve backward compatibility with older
11122 versions of ld. */
11123 if (r_type == R_PPC64_ADDR64)
11124 addend = outrel.r_addend;
11125 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11126 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM
11127 addend = (input_section->output_section->vma
11128 + input_section->output_offset
11129 + rel->r_offset);
81407a69 11130 }
65f38f15 11131 }
5bd4f169
AM
11132 break;
11133
65f38f15
AM
11134 case R_PPC64_COPY:
11135 case R_PPC64_GLOB_DAT:
11136 case R_PPC64_JMP_SLOT:
11137 case R_PPC64_RELATIVE:
11138 /* We shouldn't ever see these dynamic relocs in relocatable
11139 files. */
ae9a127f 11140 /* Fall through. */
65f38f15
AM
11141
11142 case R_PPC64_PLTGOT16:
11143 case R_PPC64_PLTGOT16_DS:
11144 case R_PPC64_PLTGOT16_HA:
11145 case R_PPC64_PLTGOT16_HI:
11146 case R_PPC64_PLTGOT16_LO:
11147 case R_PPC64_PLTGOT16_LO_DS:
11148 case R_PPC64_PLTREL32:
11149 case R_PPC64_PLTREL64:
11150 /* These ones haven't been implemented yet. */
11151
11152 (*_bfd_error_handler)
d003868e
AM
11153 (_("%B: relocation %s is not supported for symbol %s."),
11154 input_bfd,
4ce794b7 11155 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM
11156
11157 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11158 ret = FALSE;
5bd4f169 11159 continue;
65f38f15 11160 }
5bd4f169 11161
65f38f15
AM
11162 /* Do any further special processing. */
11163 switch (r_type)
11164 {
11165 default:
11166 break;
11167
11168 case R_PPC64_ADDR16_HA:
11169 case R_PPC64_ADDR16_HIGHERA:
11170 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM
11171 case R_PPC64_TOC16_HA:
11172 case R_PPC64_SECTOFF_HA:
411e1bfb
AM
11173 case R_PPC64_TPREL16_HA:
11174 case R_PPC64_DTPREL16_HA:
411e1bfb
AM
11175 case R_PPC64_TPREL16_HIGHER:
11176 case R_PPC64_TPREL16_HIGHERA:
11177 case R_PPC64_TPREL16_HIGHEST:
11178 case R_PPC64_TPREL16_HIGHESTA:
11179 case R_PPC64_DTPREL16_HIGHER:
11180 case R_PPC64_DTPREL16_HIGHERA:
11181 case R_PPC64_DTPREL16_HIGHEST:
11182 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM
11183 /* It's just possible that this symbol is a weak symbol
11184 that's not actually defined anywhere. In that case,
11185 'sec' would be NULL, and we should leave the symbol
11186 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
11187 if (sec == NULL)
11188 break;
11189 /* Fall thru */
11190
11191 case R_PPC64_GOT16_HA:
11192 case R_PPC64_PLTGOT16_HA:
11193 case R_PPC64_PLT16_HA:
11194 case R_PPC64_GOT_TLSGD16_HA:
11195 case R_PPC64_GOT_TLSLD16_HA:
11196 case R_PPC64_GOT_TPREL16_HA:
11197 case R_PPC64_GOT_DTPREL16_HA:
11198 /* Add 0x10000 if sign bit in 0:15 is set.
11199 Bits 0:15 are not used. */
11200 addend += 0x8000;
65f38f15
AM
11201 break;
11202
11203 case R_PPC64_ADDR16_DS:
11204 case R_PPC64_ADDR16_LO_DS:
11205 case R_PPC64_GOT16_DS:
11206 case R_PPC64_GOT16_LO_DS:
11207 case R_PPC64_PLT16_LO_DS:
11208 case R_PPC64_SECTOFF_DS:
11209 case R_PPC64_SECTOFF_LO_DS:
11210 case R_PPC64_TOC16_DS:
11211 case R_PPC64_TOC16_LO_DS:
11212 case R_PPC64_PLTGOT16_DS:
11213 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM
11214 case R_PPC64_GOT_TPREL16_DS:
11215 case R_PPC64_GOT_TPREL16_LO_DS:
11216 case R_PPC64_GOT_DTPREL16_DS:
11217 case R_PPC64_GOT_DTPREL16_LO_DS:
11218 case R_PPC64_TPREL16_DS:
11219 case R_PPC64_TPREL16_LO_DS:
11220 case R_PPC64_DTPREL16_DS:
11221 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM
11222 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11223 mask = 3;
11224 /* If this reloc is against an lq insn, then the value must be
11225 a multiple of 16. This is somewhat of a hack, but the
11226 "correct" way to do this by defining _DQ forms of all the
11227 _DS relocs bloats all reloc switches in this file. It
11228 doesn't seem to make much sense to use any of these relocs
11229 in data, so testing the insn should be safe. */
494dac0c 11230 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM
11231 mask = 15;
11232 if (((relocation + addend) & mask) != 0)
65f38f15
AM
11233 {
11234 (*_bfd_error_handler)
d003868e
AM
11235 (_("%B: error: relocation %s not a multiple of %d"),
11236 input_bfd,
4ce794b7 11237 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11238 mask + 1);
65f38f15 11239 bfd_set_error (bfd_error_bad_value);
b34976b6 11240 ret = FALSE;
65f38f15
AM
11241 continue;
11242 }
11243 break;
5bd4f169
AM
11244 }
11245
239e1f3a
AM
11246 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11247 because such sections are not SEC_ALLOC and thus ld.so will
11248 not process them. */
65f38f15 11249 if (unresolved_reloc
239e1f3a 11250 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11251 && h->elf.def_dynamic))
9c07fe7c
AM
11252 {
11253 (*_bfd_error_handler)
d003868e
AM
11254 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11255 input_bfd,
11256 input_section,
9c07fe7c 11257 (long) rel->r_offset,
7b609f53 11258 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11259 h->elf.root.root.string);
b34976b6 11260 ret = FALSE;
9c07fe7c 11261 }
5bd4f169 11262
65f38f15 11263 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM
11264 input_bfd,
11265 input_section,
11266 contents,
411e1bfb 11267 rel->r_offset,
5bd4f169
AM
11268 relocation,
11269 addend);
11270
ef60b7ff 11271 if (r != bfd_reloc_ok)
5bd4f169 11272 {
cd27b276
AM
11273 if (sym_name == NULL)
11274 sym_name = "(null)";
11275 if (r == bfd_reloc_overflow)
5bd4f169 11276 {
cd27b276
AM
11277 if (warned)
11278 continue;
11279 if (h != NULL
039b3fef 11280 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11281 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM
11282 {
11283 /* Assume this is a call protected by other code that
11284 detects the symbol is undefined. If this is the case,
11285 we can safely ignore the overflow. If not, the
11286 program is hosed anyway, and a little warning isn't
11287 going to help. */
11288
11289 continue;
11290 }
11291
ef60b7ff 11292 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
11293 (info, (h ? &h->elf.root : NULL), sym_name,
11294 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11295 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11296 return FALSE;
ef60b7ff
AM
11297 }
11298 else
11299 {
11300 (*_bfd_error_handler)
d003868e
AM
11301 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11302 input_bfd,
11303 input_section,
7b609f53 11304 (long) rel->r_offset,
4ce794b7 11305 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM
11306 sym_name,
11307 (int) r);
b34976b6 11308 ret = FALSE;
ef60b7ff 11309 }
5bd4f169 11310 }
5bd4f169
AM
11311 }
11312
645ea6a9
AM
11313 /* If we're emitting relocations, then shortly after this function
11314 returns, reloc offsets and addends for this section will be
11315 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM
11316 file rather than the input. Save a copy of the relocs for
11317 opd_entry_value. */
4cc603a5 11318 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM
11319 {
11320 bfd_size_type amt;
11321 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11322 rel = bfd_alloc (input_bfd, amt);
11323 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11324 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11325 if (rel == NULL)
11326 return FALSE;
11327 memcpy (rel, relocs, amt);
11328 }
5bd4f169
AM
11329 return ret;
11330}
11331
754021d0
AM
11332/* Adjust the value of any local symbols in opd sections. */
11333
11334static bfd_boolean
11335ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11336 const char *name ATTRIBUTE_UNUSED,
11337 Elf_Internal_Sym *elfsym,
11338 asection *input_sec,
11339 struct elf_link_hash_entry *h)
11340{
74f0fb50
AM
11341 struct _opd_sec_data *opd;
11342 long adjust;
754021d0
AM
11343 bfd_vma value;
11344
4025353c
AM
11345 if (h != NULL)
11346 return TRUE;
11347
74f0fb50
AM
11348 opd = get_opd_info (input_sec);
11349 if (opd == NULL || opd->adjust == NULL)
754021d0
AM
11350 return TRUE;
11351
11352 value = elfsym->st_value - input_sec->output_offset;
11353 if (!info->relocatable)
11354 value -= input_sec->output_section->vma;
11355
74f0fb50 11356 adjust = opd->adjust[value / 8];
4025353c
AM
11357 if (adjust == -1)
11358 elfsym->st_value = 0;
11359 else
11360 elfsym->st_value += adjust;
754021d0
AM
11361 return TRUE;
11362}
11363
5bd4f169
AM
11364/* Finish up dynamic symbol handling. We set the contents of various
11365 dynamic sections here. */
11366
b34976b6 11367static bfd_boolean
4ce794b7
AM
11368ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11369 struct bfd_link_info *info,
11370 struct elf_link_hash_entry *h,
11371 Elf_Internal_Sym *sym)
5bd4f169 11372{
65f38f15 11373 struct ppc_link_hash_table *htab;
8387904d
AM
11374 struct plt_entry *ent;
11375 Elf_Internal_Rela rela;
11376 bfd_byte *loc;
5bd4f169 11377
65f38f15 11378 htab = ppc_hash_table (info);
5bd4f169 11379
8387904d
AM
11380 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11381 if (ent->plt.offset != (bfd_vma) -1)
11382 {
11383 /* This symbol has an entry in the procedure linkage
11384 table. Set it up. */
11385
11386 if (htab->plt == NULL
11387 || htab->relplt == NULL
11388 || htab->glink == NULL)
11389 abort ();
11390
11391 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11392 fill in the PLT entry. */
11393 rela.r_offset = (htab->plt->output_section->vma
11394 + htab->plt->output_offset
11395 + ent->plt.offset);
11396 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11397 rela.r_addend = ent->addend;
11398
11399 loc = htab->relplt->contents;
11400 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11401 * sizeof (Elf64_External_Rela));
11402 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11403 }
5bd4f169 11404
f5385ebf 11405 if (h->needs_copy)
5bd4f169 11406 {
5bd4f169 11407 Elf_Internal_Rela rela;
947216bf 11408 bfd_byte *loc;
5bd4f169 11409
65f38f15 11410 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11411
65f38f15
AM
11412 if (h->dynindx == -1
11413 || (h->root.type != bfd_link_hash_defined
11414 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11415 || htab->relbss == NULL)
65f38f15 11416 abort ();
5bd4f169
AM
11417
11418 rela.r_offset = (h->root.u.def.value
11419 + h->root.u.def.section->output_section->vma
11420 + h->root.u.def.section->output_offset);
11421 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11422 rela.r_addend = 0;
4ce794b7
AM
11423 loc = htab->relbss->contents;
11424 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11425 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM
11426 }
11427
5bd4f169
AM
11428 /* Mark some specially defined symbols as absolute. */
11429 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11430 sym->st_shndx = SHN_ABS;
11431
b34976b6 11432 return TRUE;
5bd4f169
AM
11433}
11434
65f38f15
AM
11435/* Used to decide how to sort relocs in an optimal manner for the
11436 dynamic linker, before writing them out. */
11437
11438static enum elf_reloc_type_class
4ce794b7 11439ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11440{
04c9666a 11441 enum elf_ppc64_reloc_type r_type;
a33d1f77 11442
4ce794b7 11443 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11444 switch (r_type)
65f38f15
AM
11445 {
11446 case R_PPC64_RELATIVE:
11447 return reloc_class_relative;
11448 case R_PPC64_JMP_SLOT:
11449 return reloc_class_plt;
11450 case R_PPC64_COPY:
11451 return reloc_class_copy;
11452 default:
11453 return reloc_class_normal;
11454 }
11455}
11456
5bd4f169
AM
11457/* Finish up the dynamic sections. */
11458
b34976b6 11459static bfd_boolean
4ce794b7
AM
11460ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11461 struct bfd_link_info *info)
5bd4f169 11462{
65f38f15
AM
11463 struct ppc_link_hash_table *htab;
11464 bfd *dynobj;
5bd4f169 11465 asection *sdyn;
5bd4f169 11466
65f38f15
AM
11467 htab = ppc_hash_table (info);
11468 dynobj = htab->elf.dynobj;
5bd4f169
AM
11469 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11470
65f38f15 11471 if (htab->elf.dynamic_sections_created)
5bd4f169 11472 {
5bd4f169
AM
11473 Elf64_External_Dyn *dyncon, *dynconend;
11474
4ce794b7 11475 if (sdyn == NULL || htab->got == NULL)
65f38f15 11476 abort ();
5bd4f169
AM
11477
11478 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11479 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM
11480 for (; dyncon < dynconend; dyncon++)
11481 {
11482 Elf_Internal_Dyn dyn;
19397422 11483 asection *s;
5bd4f169
AM
11484
11485 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11486
11487 switch (dyn.d_tag)
11488 {
65f38f15
AM
11489 default:
11490 continue;
5bd4f169 11491
5d1634d7 11492 case DT_PPC64_GLINK:
4ce794b7 11493 s = htab->glink;
6348e046 11494 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM
11495 /* We stupidly defined DT_PPC64_GLINK to be the start
11496 of glink rather than the first entry point, which is
11497 what ld.so needs, and now have a bigger stub to
11498 support automatic multiple TOCs. */
11499 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM
11500 break;
11501
19397422
AM
11502 case DT_PPC64_OPD:
11503 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
11504 if (s == NULL)
11505 continue;
11506 dyn.d_un.d_ptr = s->vma;
19397422
AM
11507 break;
11508
11509 case DT_PPC64_OPDSZ:
11510 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
11511 if (s == NULL)
11512 continue;
eea6121a 11513 dyn.d_un.d_val = s->size;
19397422
AM
11514 break;
11515
65f38f15 11516 case DT_PLTGOT:
4ce794b7 11517 s = htab->plt;
6348e046 11518 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM
11519 break;
11520
11521 case DT_JMPREL:
4ce794b7 11522 s = htab->relplt;
6348e046 11523 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11524 break;
5bd4f169 11525
65f38f15 11526 case DT_PLTRELSZ:
eea6121a 11527 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM
11528 break;
11529
11530 case DT_RELASZ:
11531 /* Don't count procedure linkage table relocs in the
11532 overall reloc count. */
4ce794b7 11533 s = htab->relplt;
6348e046
AM
11534 if (s == NULL)
11535 continue;
eea6121a 11536 dyn.d_un.d_val -= s->size;
6348e046
AM
11537 break;
11538
11539 case DT_RELA:
11540 /* We may not be using the standard ELF linker script.
11541 If .rela.plt is the first .rela section, we adjust
11542 DT_RELA to not include it. */
4ce794b7 11543 s = htab->relplt;
6348e046
AM
11544 if (s == NULL)
11545 continue;
11546 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11547 continue;
eea6121a 11548 dyn.d_un.d_ptr += s->size;
65f38f15 11549 break;
5bd4f169 11550 }
5bd4f169 11551
65f38f15 11552 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11553 }
5bd4f169
AM
11554 }
11555
eea6121a 11556 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM
11557 {
11558 /* Fill in the first entry in the global offset table.
11559 We use it to hold the link-time TOCbase. */
11560 bfd_put_64 (output_bfd,
60ee0d4a 11561 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11562 htab->got->contents);
5d1634d7
AM
11563
11564 /* Set .got entry size. */
4ce794b7 11565 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM
11566 }
11567
eea6121a 11568 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM
11569 {
11570 /* Set .plt entry size. */
4ce794b7 11571 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM
11572 = PLT_ENTRY_SIZE;
11573 }
11574
84f5d08e
AM
11575 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11576 brlt ourselves if emitrelocations. */
11577 if (htab->brlt != NULL
11578 && htab->brlt->reloc_count != 0
11579 && !_bfd_elf_link_output_relocs (output_bfd,
11580 htab->brlt,
11581 &elf_section_data (htab->brlt)->rel_hdr,
11582 elf_section_data (htab->brlt)->relocs,
11583 NULL))
11584 return FALSE;
11585
e717da7e 11586 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM
11587 since we didn't add them to DYNOBJ. We know dynobj is the first
11588 bfd. */
e717da7e
AM
11589 while ((dynobj = dynobj->link_next) != NULL)
11590 {
11591 asection *s;
7b53ace3 11592
0c8d6e5c 11593 if (!is_ppc64_elf (dynobj))
7b53ace3
AM
11594 continue;
11595
e717da7e
AM
11596 s = ppc64_elf_tdata (dynobj)->got;
11597 if (s != NULL
eea6121a 11598 && s->size != 0
e717da7e
AM
11599 && s->output_section != bfd_abs_section_ptr
11600 && !bfd_set_section_contents (output_bfd, s->output_section,
11601 s->contents, s->output_offset,
eea6121a 11602 s->size))
e717da7e
AM
11603 return FALSE;
11604 s = ppc64_elf_tdata (dynobj)->relgot;
11605 if (s != NULL
eea6121a 11606 && s->size != 0
e717da7e
AM
11607 && s->output_section != bfd_abs_section_ptr
11608 && !bfd_set_section_contents (output_bfd, s->output_section,
11609 s->contents, s->output_offset,
eea6121a 11610 s->size))
e717da7e
AM
11611 return FALSE;
11612 }
f6c52c13 11613
b34976b6 11614 return TRUE;
5bd4f169
AM
11615}
11616
5bd4f169 11617#include "elf64-target.h"
This page took 1.201764 seconds and 4 git commands to generate.