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* elf64-ppc.c (struct got_entry): Make tls_type and is_indirect
[thirdparty/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3a71aa26 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
fb34365b 3 2009, 2010 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.
32ca9640 6 Largely rewritten by Alan Modra.
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
cd123cb7 24
4ce794b7
AM
25/* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
5bd4f169 31#include "bfd.h"
5bd4f169
AM
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
04c9666a 35#include "elf/ppc64.h"
5d1634d7 36#include "elf64-ppc.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
56static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 58
ad8e1ba5
AM
59#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60#define TARGET_LITTLE_NAME "elf64-powerpcle"
61#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
64#define ELF_MACHINE_CODE EM_PPC64
65#define ELF_MAXPAGESIZE 0x10000
24718e3b 66#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM
67#define elf_info_to_howto ppc64_elf_info_to_howto
68
69#define elf_backend_want_got_sym 0
70#define elf_backend_want_plt_sym 0
71#define elf_backend_plt_alignment 3
72#define elf_backend_plt_not_loaded 1
ad8e1ba5 73#define elf_backend_got_header_size 8
ad8e1ba5
AM
74#define elf_backend_can_gc_sections 1
75#define elf_backend_can_refcount 1
76#define elf_backend_rela_normal 1
6bfdb61b 77#define elf_backend_default_execstack 0
ad8e1ba5 78
e717da7e 79#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 80#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
157090f7 81#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM
82#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 86#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM
87
88#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM
89#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 91#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM
92#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 94#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
7d9616d7 95#define elf_backend_check_directives ppc64_elf_process_dot_syms
97fed1c9 96#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 97#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 98#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 99#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 100#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM
101#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104#define elf_backend_hide_symbol ppc64_elf_hide_symbol
105#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 107#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 108#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM
109#define elf_backend_relocate_section ppc64_elf_relocate_section
110#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 113#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 114#define elf_backend_special_sections ppc64_elf_special_sections
e054468f 115#define elf_backend_post_process_headers _bfd_elf_set_osabi
ad8e1ba5 116
5bd4f169
AM
117/* The name of the dynamic interpreter. This is put in the .interp
118 section. */
119#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
120
121/* The size in bytes of an entry in the procedure linkage table. */
122#define PLT_ENTRY_SIZE 24
123
124/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 125#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM
126
127/* TOC base pointers offset from start of TOC. */
411e1bfb
AM
128#define TOC_BASE_OFF 0x8000
129
130/* Offset of tp and dtp pointers from start of TLS block. */
131#define TP_OFFSET 0x7000
132#define DTP_OFFSET 0x8000
5bd4f169 133
ad8e1ba5
AM
134/* .plt call stub instructions. The normal stub is like this, but
135 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 136 insert an addi to adjust r12. */
ad8e1ba5 137#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM
138#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
139#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
140#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 141#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 142#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
AM
143 /* ld %r11,xxx+16@l(%r12) */
144#define BCTR 0x4e800420 /* bctr */
145
5d1634d7 146
ee4bf8d2 147#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 148#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
ad8e1ba5
AM
149#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
150#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
151
ac2df442
AM
152#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
153#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
154
ad8e1ba5
AM
155#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
156
ee4bf8d2 157/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 158#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM
159 /* 0: */
160 /* .quad plt0-1f */
161 /* __glink: */
162#define MFLR_R12 0x7d8802a6 /* mflr %12 */
163#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
164 /* 1: */
165#define MFLR_R11 0x7d6802a6 /* mflr %11 */
166#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
167#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
168#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
169 /* ld %11,0(%12) */
170 /* ld %2,8(%12) */
171 /* mtctr %11 */
172 /* ld %11,16(%12) */
173 /* bctr */
5d1634d7
AM
174
175/* Pad with this. */
176#define NOP 0x60000000
177
721956f4
AM
178/* Some other nops. */
179#define CROR_151515 0x4def7b82
180#define CROR_313131 0x4ffffb82
181
cedb70c5 182/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM
183#define LI_R0_0 0x38000000 /* li %r0,0 */
184#define B_DOT 0x48000000 /* b . */
185
186/* After that, we need two instructions to load the index, followed by
187 a branch. */
188#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 189#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 190
deb0e272
AM
191/* Instructions used by the save and restore reg functions. */
192#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
193#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
194#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
195#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM
196#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
197#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM
198#define LI_R12_0 0x39800000 /* li %r12,0 */
199#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
200#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
201#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM
202#define BLR 0x4e800020 /* blr */
203
41bd81ab
AM
204/* Since .opd is an array of descriptors and each entry will end up
205 with identical R_PPC64_RELATIVE relocs, there is really no need to
206 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 207 relocate .opd without reloc entries. */
41bd81ab
AM
208#ifndef NO_OPD_RELOCS
209#define NO_OPD_RELOCS 0
210#endif
5bd4f169 211\f
f5e87a1d 212#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 213
5bd4f169 214/* Relocation HOWTO's. */
04c9666a 215static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM
216
217static reloc_howto_type ppc64_elf_howto_raw[] = {
218 /* This reloc does nothing. */
219 HOWTO (R_PPC64_NONE, /* type */
220 0, /* rightshift */
411e1bfb
AM
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 32, /* bitsize */
b34976b6 223 FALSE, /* pc_relative */
5bd4f169 224 0, /* bitpos */
f5e87a1d 225 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_NONE", /* name */
b34976b6 228 FALSE, /* partial_inplace */
d006db6c 229 0, /* src_mask */
5bd4f169 230 0, /* dst_mask */
b34976b6 231 FALSE), /* pcrel_offset */
5bd4f169
AM
232
233 /* A standard 32 bit relocation. */
234 HOWTO (R_PPC64_ADDR32, /* type */
235 0, /* rightshift */
236 2, /* size (0 = byte, 1 = short, 2 = long) */
237 32, /* bitsize */
b34976b6 238 FALSE, /* pc_relative */
5bd4f169
AM
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC64_ADDR32", /* name */
b34976b6 243 FALSE, /* partial_inplace */
5bd4f169
AM
244 0, /* src_mask */
245 0xffffffff, /* dst_mask */
b34976b6 246 FALSE), /* pcrel_offset */
5bd4f169
AM
247
248 /* An absolute 26 bit branch; the lower two bits must be zero.
249 FIXME: we don't check that, we just clear them. */
250 HOWTO (R_PPC64_ADDR24, /* type */
251 0, /* rightshift */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
253 26, /* bitsize */
b34976b6 254 FALSE, /* pc_relative */
5bd4f169
AM
255 0, /* bitpos */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR24", /* name */
b34976b6 259 FALSE, /* partial_inplace */
d006db6c 260 0, /* src_mask */
f5e87a1d 261 0x03fffffc, /* dst_mask */
b34976b6 262 FALSE), /* pcrel_offset */
5bd4f169
AM
263
264 /* A standard 16 bit relocation. */
265 HOWTO (R_PPC64_ADDR16, /* type */
266 0, /* rightshift */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
b34976b6 269 FALSE, /* pc_relative */
5bd4f169
AM
270 0, /* bitpos */
271 complain_overflow_bitfield, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16", /* name */
b34976b6 274 FALSE, /* partial_inplace */
5bd4f169
AM
275 0, /* src_mask */
276 0xffff, /* dst_mask */
b34976b6 277 FALSE), /* pcrel_offset */
5bd4f169
AM
278
279 /* A 16 bit relocation without overflow. */
280 HOWTO (R_PPC64_ADDR16_LO, /* type */
281 0, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
b34976b6 284 FALSE, /* pc_relative */
5bd4f169
AM
285 0, /* bitpos */
286 complain_overflow_dont,/* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_LO", /* name */
b34976b6 289 FALSE, /* partial_inplace */
5bd4f169
AM
290 0, /* src_mask */
291 0xffff, /* dst_mask */
b34976b6 292 FALSE), /* pcrel_offset */
5bd4f169
AM
293
294 /* Bits 16-31 of an address. */
295 HOWTO (R_PPC64_ADDR16_HI, /* type */
296 16, /* rightshift */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
298 16, /* bitsize */
b34976b6 299 FALSE, /* pc_relative */
5bd4f169
AM
300 0, /* bitpos */
301 complain_overflow_dont, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC64_ADDR16_HI", /* name */
b34976b6 304 FALSE, /* partial_inplace */
5bd4f169
AM
305 0, /* src_mask */
306 0xffff, /* dst_mask */
b34976b6 307 FALSE), /* pcrel_offset */
5bd4f169
AM
308
309 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
310 bits, treated as a signed number, is negative. */
311 HOWTO (R_PPC64_ADDR16_HA, /* type */
312 16, /* rightshift */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
314 16, /* bitsize */
b34976b6 315 FALSE, /* pc_relative */
5bd4f169
AM
316 0, /* bitpos */
317 complain_overflow_dont, /* complain_on_overflow */
805fc799 318 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 319 "R_PPC64_ADDR16_HA", /* name */
b34976b6 320 FALSE, /* partial_inplace */
5bd4f169
AM
321 0, /* src_mask */
322 0xffff, /* dst_mask */
b34976b6 323 FALSE), /* pcrel_offset */
5bd4f169
AM
324
325 /* An absolute 16 bit branch; the lower two bits must be zero.
326 FIXME: we don't check that, we just clear them. */
327 HOWTO (R_PPC64_ADDR14, /* type */
328 0, /* rightshift */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
330 16, /* bitsize */
b34976b6 331 FALSE, /* pc_relative */
5bd4f169
AM
332 0, /* bitpos */
333 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 334 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 335 "R_PPC64_ADDR14", /* name */
b34976b6 336 FALSE, /* partial_inplace */
d006db6c 337 0, /* src_mask */
f5e87a1d 338 0x0000fffc, /* dst_mask */
b34976b6 339 FALSE), /* pcrel_offset */
5bd4f169
AM
340
341 /* An absolute 16 bit branch, for which bit 10 should be set to
342 indicate that the branch is expected to be taken. The lower two
343 bits must be zero. */
344 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 16, /* bitsize */
b34976b6 348 FALSE, /* pc_relative */
5bd4f169
AM
349 0, /* bitpos */
350 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 351 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 352 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 353 FALSE, /* partial_inplace */
d006db6c 354 0, /* src_mask */
f5e87a1d 355 0x0000fffc, /* dst_mask */
b34976b6 356 FALSE), /* pcrel_offset */
5bd4f169
AM
357
358 /* An absolute 16 bit branch, for which bit 10 should be set to
359 indicate that the branch is not expected to be taken. The lower
360 two bits must be zero. */
361 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
b34976b6 365 FALSE, /* pc_relative */
5bd4f169
AM
366 0, /* bitpos */
367 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 368 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 369 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 370 FALSE, /* partial_inplace */
d006db6c 371 0, /* src_mask */
f5e87a1d 372 0x0000fffc, /* dst_mask */
b34976b6 373 FALSE), /* pcrel_offset */
5bd4f169
AM
374
375 /* A relative 26 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL24, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 26, /* bitsize */
b34976b6 380 TRUE, /* pc_relative */
5bd4f169
AM
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
2441e016 383 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 384 "R_PPC64_REL24", /* name */
b34976b6 385 FALSE, /* partial_inplace */
d006db6c 386 0, /* src_mask */
f5e87a1d 387 0x03fffffc, /* dst_mask */
b34976b6 388 TRUE), /* pcrel_offset */
5bd4f169
AM
389
390 /* A relative 16 bit branch; the lower two bits must be zero. */
391 HOWTO (R_PPC64_REL14, /* type */
392 0, /* rightshift */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
394 16, /* bitsize */
b34976b6 395 TRUE, /* pc_relative */
5bd4f169
AM
396 0, /* bitpos */
397 complain_overflow_signed, /* complain_on_overflow */
2441e016 398 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 399 "R_PPC64_REL14", /* name */
b34976b6 400 FALSE, /* partial_inplace */
d006db6c 401 0, /* src_mask */
f5e87a1d 402 0x0000fffc, /* dst_mask */
b34976b6 403 TRUE), /* pcrel_offset */
5bd4f169
AM
404
405 /* A relative 16 bit branch. Bit 10 should be set to indicate that
406 the branch is expected to be taken. The lower two bits must be
407 zero. */
408 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
409 0, /* rightshift */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
411 16, /* bitsize */
b34976b6 412 TRUE, /* pc_relative */
5bd4f169
AM
413 0, /* bitpos */
414 complain_overflow_signed, /* complain_on_overflow */
805fc799 415 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 416 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 417 FALSE, /* partial_inplace */
d006db6c 418 0, /* src_mask */
f5e87a1d 419 0x0000fffc, /* dst_mask */
b34976b6 420 TRUE), /* pcrel_offset */
5bd4f169
AM
421
422 /* A relative 16 bit branch. Bit 10 should be set to indicate that
423 the branch is not expected to be taken. The lower two bits must
424 be zero. */
425 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
426 0, /* rightshift */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
b34976b6 429 TRUE, /* pc_relative */
5bd4f169
AM
430 0, /* bitpos */
431 complain_overflow_signed, /* complain_on_overflow */
805fc799 432 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 433 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 434 FALSE, /* partial_inplace */
d006db6c 435 0, /* src_mask */
f5e87a1d 436 0x0000fffc, /* dst_mask */
b34976b6 437 TRUE), /* pcrel_offset */
5bd4f169
AM
438
439 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
440 symbol. */
441 HOWTO (R_PPC64_GOT16, /* type */
442 0, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 FALSE, /* pc_relative */
5bd4f169
AM
446 0, /* bitpos */
447 complain_overflow_signed, /* complain_on_overflow */
805fc799 448 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 449 "R_PPC64_GOT16", /* name */
b34976b6 450 FALSE, /* partial_inplace */
5bd4f169
AM
451 0, /* src_mask */
452 0xffff, /* dst_mask */
b34976b6 453 FALSE), /* pcrel_offset */
5bd4f169
AM
454
455 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
456 the symbol. */
457 HOWTO (R_PPC64_GOT16_LO, /* type */
458 0, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
b34976b6 461 FALSE, /* pc_relative */
5bd4f169
AM
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
805fc799 464 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 465 "R_PPC64_GOT16_LO", /* name */
b34976b6 466 FALSE, /* partial_inplace */
5bd4f169
AM
467 0, /* src_mask */
468 0xffff, /* dst_mask */
b34976b6 469 FALSE), /* pcrel_offset */
5bd4f169
AM
470
471 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
472 the symbol. */
473 HOWTO (R_PPC64_GOT16_HI, /* type */
474 16, /* rightshift */
475 1, /* size (0 = byte, 1 = short, 2 = long) */
476 16, /* bitsize */
b34976b6 477 FALSE, /* pc_relative */
5bd4f169
AM
478 0, /* bitpos */
479 complain_overflow_dont,/* complain_on_overflow */
805fc799 480 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 481 "R_PPC64_GOT16_HI", /* name */
b34976b6 482 FALSE, /* partial_inplace */
5bd4f169
AM
483 0, /* src_mask */
484 0xffff, /* dst_mask */
b34976b6 485 FALSE), /* pcrel_offset */
5bd4f169
AM
486
487 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
488 the symbol. */
489 HOWTO (R_PPC64_GOT16_HA, /* type */
490 16, /* rightshift */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
492 16, /* bitsize */
b34976b6 493 FALSE, /* pc_relative */
5bd4f169
AM
494 0, /* bitpos */
495 complain_overflow_dont,/* complain_on_overflow */
805fc799 496 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 497 "R_PPC64_GOT16_HA", /* name */
b34976b6 498 FALSE, /* partial_inplace */
5bd4f169
AM
499 0, /* src_mask */
500 0xffff, /* dst_mask */
b34976b6 501 FALSE), /* pcrel_offset */
5bd4f169
AM
502
503 /* This is used only by the dynamic linker. The symbol should exist
504 both in the object being run and in some shared library. The
505 dynamic linker copies the data addressed by the symbol from the
506 shared library into the object, because the object being
507 run has to have the data at some particular address. */
508 HOWTO (R_PPC64_COPY, /* type */
509 0, /* rightshift */
f5e87a1d
AM
510 0, /* this one is variable size */
511 0, /* bitsize */
b34976b6 512 FALSE, /* pc_relative */
5bd4f169 513 0, /* bitpos */
f5e87a1d
AM
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 516 "R_PPC64_COPY", /* name */
b34976b6 517 FALSE, /* partial_inplace */
5bd4f169
AM
518 0, /* src_mask */
519 0, /* dst_mask */
b34976b6 520 FALSE), /* pcrel_offset */
5bd4f169
AM
521
522 /* Like R_PPC64_ADDR64, but used when setting global offset table
523 entries. */
524 HOWTO (R_PPC64_GLOB_DAT, /* type */
525 0, /* rightshift */
526 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
527 64, /* bitsize */
b34976b6 528 FALSE, /* pc_relative */
5bd4f169
AM
529 0, /* bitpos */
530 complain_overflow_dont, /* complain_on_overflow */
805fc799 531 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 532 "R_PPC64_GLOB_DAT", /* name */
b34976b6 533 FALSE, /* partial_inplace */
5bd4f169 534 0, /* src_mask */
f5e87a1d 535 ONES (64), /* dst_mask */
b34976b6 536 FALSE), /* pcrel_offset */
5bd4f169
AM
537
538 /* Created by the link editor. Marks a procedure linkage table
539 entry for a symbol. */
540 HOWTO (R_PPC64_JMP_SLOT, /* type */
541 0, /* rightshift */
542 0, /* size (0 = byte, 1 = short, 2 = long) */
543 0, /* bitsize */
b34976b6 544 FALSE, /* pc_relative */
5bd4f169
AM
545 0, /* bitpos */
546 complain_overflow_dont, /* complain_on_overflow */
805fc799 547 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 548 "R_PPC64_JMP_SLOT", /* name */
b34976b6 549 FALSE, /* partial_inplace */
5bd4f169
AM
550 0, /* src_mask */
551 0, /* dst_mask */
b34976b6 552 FALSE), /* pcrel_offset */
5bd4f169
AM
553
554 /* Used only by the dynamic linker. When the object is run, this
555 doubleword64 is set to the load address of the object, plus the
556 addend. */
557 HOWTO (R_PPC64_RELATIVE, /* type */
558 0, /* rightshift */
559 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
560 64, /* bitsize */
b34976b6 561 FALSE, /* pc_relative */
5bd4f169
AM
562 0, /* bitpos */
563 complain_overflow_dont, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_RELATIVE", /* name */
b34976b6 566 FALSE, /* partial_inplace */
5bd4f169 567 0, /* src_mask */
f5e87a1d 568 ONES (64), /* dst_mask */
b34976b6 569 FALSE), /* pcrel_offset */
5bd4f169
AM
570
571 /* Like R_PPC64_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
b34976b6 576 FALSE, /* pc_relative */
5bd4f169
AM
577 0, /* bitpos */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR32", /* name */
b34976b6 581 FALSE, /* partial_inplace */
5bd4f169
AM
582 0, /* src_mask */
583 0xffffffff, /* dst_mask */
b34976b6 584 FALSE), /* pcrel_offset */
5bd4f169
AM
585
586 /* Like R_PPC64_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC64_UADDR16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
b34976b6 591 FALSE, /* pc_relative */
5bd4f169
AM
592 0, /* bitpos */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC64_UADDR16", /* name */
b34976b6 596 FALSE, /* partial_inplace */
5bd4f169
AM
597 0, /* src_mask */
598 0xffff, /* dst_mask */
b34976b6 599 FALSE), /* pcrel_offset */
5bd4f169
AM
600
601 /* 32-bit PC relative. */
602 HOWTO (R_PPC64_REL32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
b34976b6 606 TRUE, /* pc_relative */
5bd4f169 607 0, /* bitpos */
cedb70c5 608 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM
609 complain_overflow_signed, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC64_REL32", /* name */
b34976b6 612 FALSE, /* partial_inplace */
5bd4f169
AM
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
b34976b6 615 TRUE), /* pcrel_offset */
5bd4f169 616
10ed1bba 617 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
618 HOWTO (R_PPC64_PLT32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
b34976b6 622 FALSE, /* pc_relative */
5bd4f169
AM
623 0, /* bitpos */
624 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 625 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 626 "R_PPC64_PLT32", /* name */
b34976b6 627 FALSE, /* partial_inplace */
5bd4f169 628 0, /* src_mask */
f5e87a1d 629 0xffffffff, /* dst_mask */
b34976b6 630 FALSE), /* pcrel_offset */
5bd4f169
AM
631
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: R_PPC64_PLTREL32 not supported. */
634 HOWTO (R_PPC64_PLTREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
b34976b6 638 TRUE, /* pc_relative */
5bd4f169
AM
639 0, /* bitpos */
640 complain_overflow_signed, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC64_PLTREL32", /* name */
b34976b6 643 FALSE, /* partial_inplace */
5bd4f169 644 0, /* src_mask */
f5e87a1d 645 0xffffffff, /* dst_mask */
b34976b6 646 TRUE), /* pcrel_offset */
5bd4f169
AM
647
648 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC64_PLT16_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
b34976b6 654 FALSE, /* pc_relative */
5bd4f169
AM
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
805fc799 657 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 658 "R_PPC64_PLT16_LO", /* name */
b34976b6 659 FALSE, /* partial_inplace */
5bd4f169
AM
660 0, /* src_mask */
661 0xffff, /* dst_mask */
b34976b6 662 FALSE), /* pcrel_offset */
5bd4f169
AM
663
664 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC64_PLT16_HI, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
b34976b6 670 FALSE, /* pc_relative */
5bd4f169
AM
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
805fc799 673 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 674 "R_PPC64_PLT16_HI", /* name */
b34976b6 675 FALSE, /* partial_inplace */
5bd4f169
AM
676 0, /* src_mask */
677 0xffff, /* dst_mask */
b34976b6 678 FALSE), /* pcrel_offset */
5bd4f169
AM
679
680 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
681 the symbol. */
682 HOWTO (R_PPC64_PLT16_HA, /* type */
683 16, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
5bd4f169
AM
687 0, /* bitpos */
688 complain_overflow_dont, /* complain_on_overflow */
805fc799 689 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 690 "R_PPC64_PLT16_HA", /* name */
b34976b6 691 FALSE, /* partial_inplace */
5bd4f169
AM
692 0, /* src_mask */
693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
5bd4f169 695
c061c2d8 696 /* 16-bit section relative relocation. */
5bd4f169
AM
697 HOWTO (R_PPC64_SECTOFF, /* type */
698 0, /* rightshift */
c061c2d8
AM
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
5bd4f169
AM
702 0, /* bitpos */
703 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 704 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 705 "R_PPC64_SECTOFF", /* name */
b34976b6 706 FALSE, /* partial_inplace */
5bd4f169 707 0, /* src_mask */
c061c2d8 708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
5bd4f169 710
c061c2d8 711 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM
712 HOWTO (R_PPC64_SECTOFF_LO, /* type */
713 0, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
5bd4f169
AM
717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
805fc799 719 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 720 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 721 FALSE, /* partial_inplace */
5bd4f169
AM
722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
5bd4f169
AM
725
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HI, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
5bd4f169
AM
732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
805fc799 734 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 735 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 736 FALSE, /* partial_inplace */
5bd4f169
AM
737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
5bd4f169
AM
740
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC64_SECTOFF_HA, /* type */
743 16, /* rightshift */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
745 16, /* bitsize */
b34976b6 746 FALSE, /* pc_relative */
5bd4f169
AM
747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
805fc799 749 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 750 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 751 FALSE, /* partial_inplace */
5bd4f169
AM
752 0, /* src_mask */
753 0xffff, /* dst_mask */
b34976b6 754 FALSE), /* pcrel_offset */
5bd4f169 755
04c9666a
AM
756 /* Like R_PPC64_REL24 without touching the two least significant bits. */
757 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM
758 2, /* rightshift */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
760 30, /* bitsize */
b34976b6 761 TRUE, /* pc_relative */
5bd4f169
AM
762 0, /* bitpos */
763 complain_overflow_dont, /* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
04c9666a 765 "R_PPC64_REL30", /* name */
b34976b6 766 FALSE, /* partial_inplace */
d006db6c 767 0, /* src_mask */
5bd4f169 768 0xfffffffc, /* dst_mask */
b34976b6 769 TRUE), /* pcrel_offset */
5bd4f169
AM
770
771 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
772
773 /* A standard 64-bit relocation. */
774 HOWTO (R_PPC64_ADDR64, /* type */
775 0, /* rightshift */
776 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
777 64, /* bitsize */
b34976b6 778 FALSE, /* pc_relative */
5bd4f169
AM
779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR64", /* name */
b34976b6 783 FALSE, /* partial_inplace */
5bd4f169 784 0, /* src_mask */
f5e87a1d 785 ONES (64), /* dst_mask */
b34976b6 786 FALSE), /* pcrel_offset */
5bd4f169
AM
787
788 /* The bits 32-47 of an address. */
789 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
790 32, /* rightshift */
791 1, /* size (0 = byte, 1 = short, 2 = long) */
792 16, /* bitsize */
b34976b6 793 FALSE, /* pc_relative */
5bd4f169
AM
794 0, /* bitpos */
795 complain_overflow_dont, /* complain_on_overflow */
796 bfd_elf_generic_reloc, /* special_function */
797 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 798 FALSE, /* partial_inplace */
5bd4f169
AM
799 0, /* src_mask */
800 0xffff, /* dst_mask */
b34976b6 801 FALSE), /* pcrel_offset */
5bd4f169
AM
802
803 /* The bits 32-47 of an address, plus 1 if the contents of the low
804 16 bits, treated as a signed number, is negative. */
805 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
806 32, /* rightshift */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
b34976b6 809 FALSE, /* pc_relative */
5bd4f169
AM
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
805fc799 812 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 813 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 814 FALSE, /* partial_inplace */
5bd4f169
AM
815 0, /* src_mask */
816 0xffff, /* dst_mask */
b34976b6 817 FALSE), /* pcrel_offset */
5bd4f169
AM
818
819 /* The bits 48-63 of an address. */
820 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
821 48, /* rightshift */
822 1, /* size (0 = byte, 1 = short, 2 = long) */
823 16, /* bitsize */
b34976b6 824 FALSE, /* pc_relative */
5bd4f169
AM
825 0, /* bitpos */
826 complain_overflow_dont, /* complain_on_overflow */
827 bfd_elf_generic_reloc, /* special_function */
828 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 829 FALSE, /* partial_inplace */
5bd4f169
AM
830 0, /* src_mask */
831 0xffff, /* dst_mask */
b34976b6 832 FALSE), /* pcrel_offset */
5bd4f169
AM
833
834 /* The bits 48-63 of an address, plus 1 if the contents of the low
835 16 bits, treated as a signed number, is negative. */
836 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
837 48, /* rightshift */
838 1, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
b34976b6 840 FALSE, /* pc_relative */
5bd4f169
AM
841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
805fc799 843 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 844 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 845 FALSE, /* partial_inplace */
5bd4f169
AM
846 0, /* src_mask */
847 0xffff, /* dst_mask */
b34976b6 848 FALSE), /* pcrel_offset */
5bd4f169
AM
849
850 /* Like ADDR64, but may be unaligned. */
851 HOWTO (R_PPC64_UADDR64, /* type */
852 0, /* rightshift */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 64, /* bitsize */
b34976b6 855 FALSE, /* pc_relative */
5bd4f169
AM
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_UADDR64", /* name */
b34976b6 860 FALSE, /* partial_inplace */
5bd4f169 861 0, /* src_mask */
f5e87a1d 862 ONES (64), /* dst_mask */
b34976b6 863 FALSE), /* pcrel_offset */
5bd4f169
AM
864
865 /* 64-bit relative relocation. */
866 HOWTO (R_PPC64_REL64, /* type */
867 0, /* rightshift */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
869 64, /* bitsize */
b34976b6 870 TRUE, /* pc_relative */
5bd4f169
AM
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 bfd_elf_generic_reloc, /* special_function */
874 "R_PPC64_REL64", /* name */
b34976b6 875 FALSE, /* partial_inplace */
5bd4f169 876 0, /* src_mask */
f5e87a1d 877 ONES (64), /* dst_mask */
b34976b6 878 TRUE), /* pcrel_offset */
5bd4f169 879
cedb70c5 880 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
881 HOWTO (R_PPC64_PLT64, /* type */
882 0, /* rightshift */
883 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
884 64, /* bitsize */
b34976b6 885 FALSE, /* pc_relative */
5bd4f169
AM
886 0, /* bitpos */
887 complain_overflow_dont, /* complain_on_overflow */
805fc799 888 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 889 "R_PPC64_PLT64", /* name */
b34976b6 890 FALSE, /* partial_inplace */
5bd4f169 891 0, /* src_mask */
f5e87a1d 892 ONES (64), /* dst_mask */
b34976b6 893 FALSE), /* pcrel_offset */
5bd4f169
AM
894
895 /* 64-bit PC relative relocation to the symbol's procedure linkage
896 table. */
897 /* FIXME: R_PPC64_PLTREL64 not supported. */
898 HOWTO (R_PPC64_PLTREL64, /* type */
899 0, /* rightshift */
900 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
901 64, /* bitsize */
b34976b6 902 TRUE, /* pc_relative */
5bd4f169
AM
903 0, /* bitpos */
904 complain_overflow_dont, /* complain_on_overflow */
805fc799 905 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 906 "R_PPC64_PLTREL64", /* name */
b34976b6 907 FALSE, /* partial_inplace */
5bd4f169 908 0, /* src_mask */
f5e87a1d 909 ONES (64), /* dst_mask */
b34976b6 910 TRUE), /* pcrel_offset */
5bd4f169
AM
911
912 /* 16 bit TOC-relative relocation. */
913
914 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
915 HOWTO (R_PPC64_TOC16, /* type */
916 0, /* rightshift */
917 1, /* size (0 = byte, 1 = short, 2 = long) */
918 16, /* bitsize */
b34976b6 919 FALSE, /* pc_relative */
5bd4f169
AM
920 0, /* bitpos */
921 complain_overflow_signed, /* complain_on_overflow */
805fc799 922 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 923 "R_PPC64_TOC16", /* name */
b34976b6 924 FALSE, /* partial_inplace */
5bd4f169
AM
925 0, /* src_mask */
926 0xffff, /* dst_mask */
b34976b6 927 FALSE), /* pcrel_offset */
5bd4f169
AM
928
929 /* 16 bit TOC-relative relocation without overflow. */
930
931 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
932 HOWTO (R_PPC64_TOC16_LO, /* type */
933 0, /* rightshift */
934 1, /* size (0 = byte, 1 = short, 2 = long) */
935 16, /* bitsize */
b34976b6 936 FALSE, /* pc_relative */
5bd4f169
AM
937 0, /* bitpos */
938 complain_overflow_dont, /* complain_on_overflow */
805fc799 939 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 940 "R_PPC64_TOC16_LO", /* name */
b34976b6 941 FALSE, /* partial_inplace */
5bd4f169
AM
942 0, /* src_mask */
943 0xffff, /* dst_mask */
b34976b6 944 FALSE), /* pcrel_offset */
5bd4f169
AM
945
946 /* 16 bit TOC-relative relocation, high 16 bits. */
947
948 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
949 HOWTO (R_PPC64_TOC16_HI, /* type */
950 16, /* rightshift */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
952 16, /* bitsize */
b34976b6 953 FALSE, /* pc_relative */
5bd4f169
AM
954 0, /* bitpos */
955 complain_overflow_dont, /* complain_on_overflow */
805fc799 956 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 957 "R_PPC64_TOC16_HI", /* name */
b34976b6 958 FALSE, /* partial_inplace */
5bd4f169
AM
959 0, /* src_mask */
960 0xffff, /* dst_mask */
b34976b6 961 FALSE), /* pcrel_offset */
5bd4f169
AM
962
963 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
964 contents of the low 16 bits, treated as a signed number, is
965 negative. */
966
967 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
968 HOWTO (R_PPC64_TOC16_HA, /* type */
969 16, /* rightshift */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
971 16, /* bitsize */
b34976b6 972 FALSE, /* pc_relative */
5bd4f169
AM
973 0, /* bitpos */
974 complain_overflow_dont, /* complain_on_overflow */
805fc799 975 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 976 "R_PPC64_TOC16_HA", /* name */
b34976b6 977 FALSE, /* partial_inplace */
5bd4f169
AM
978 0, /* src_mask */
979 0xffff, /* dst_mask */
b34976b6 980 FALSE), /* pcrel_offset */
5bd4f169
AM
981
982 /* 64-bit relocation; insert value of TOC base (.TOC.). */
983
984 /* R_PPC64_TOC 51 doubleword64 .TOC. */
985 HOWTO (R_PPC64_TOC, /* type */
986 0, /* rightshift */
987 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
988 64, /* bitsize */
b34976b6 989 FALSE, /* pc_relative */
5bd4f169
AM
990 0, /* bitpos */
991 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 992 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 993 "R_PPC64_TOC", /* name */
b34976b6 994 FALSE, /* partial_inplace */
5bd4f169 995 0, /* src_mask */
f5e87a1d 996 ONES (64), /* dst_mask */
b34976b6 997 FALSE), /* pcrel_offset */
5bd4f169
AM
998
999 /* Like R_PPC64_GOT16, but also informs the link editor that the
1000 value to relocate may (!) refer to a PLT entry which the link
1001 editor (a) may replace with the symbol value. If the link editor
1002 is unable to fully resolve the symbol, it may (b) create a PLT
1003 entry and store the address to the new PLT entry in the GOT.
1004 This permits lazy resolution of function symbols at run time.
1005 The link editor may also skip all of this and just (c) emit a
1006 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1007 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1008 HOWTO (R_PPC64_PLTGOT16, /* type */
1009 0, /* rightshift */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 16, /* bitsize */
b34976b6 1012 FALSE, /* pc_relative */
5bd4f169
AM
1013 0, /* bitpos */
1014 complain_overflow_signed, /* complain_on_overflow */
805fc799 1015 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM
1016 "R_PPC64_PLTGOT16", /* name */
1017 FALSE, /* partial_inplace */
1018 0, /* src_mask */
1019 0xffff, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1021
1022 /* Like R_PPC64_PLTGOT16, but without overflow. */
1023 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1024 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1025 0, /* rightshift */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 16, /* bitsize */
1028 FALSE, /* pc_relative */
1029 0, /* bitpos */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc64_elf_unhandled_reloc, /* special_function */
1032 "R_PPC64_PLTGOT16_LO", /* name */
1033 FALSE, /* partial_inplace */
1034 0, /* src_mask */
1035 0xffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1037
1038 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1039 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1040 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1043 16, /* bitsize */
1044 FALSE, /* pc_relative */
1045 0, /* bitpos */
1046 complain_overflow_dont, /* complain_on_overflow */
1047 ppc64_elf_unhandled_reloc, /* special_function */
1048 "R_PPC64_PLTGOT16_HI", /* name */
1049 FALSE, /* partial_inplace */
1050 0, /* src_mask */
1051 0xffff, /* dst_mask */
1052 FALSE), /* pcrel_offset */
1053
1054 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1055 1 if the contents of the low 16 bits, treated as a signed number,
1056 is negative. */
1057 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1059 16, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc, /* special_function */
1066 "R_PPC64_PLTGOT16_HA", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_DS, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_bitfield, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_DS", /* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont,/* complain_on_overflow */
1095 bfd_elf_generic_reloc, /* special_function */
1096 "R_PPC64_ADDR16_LO_DS",/* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_signed, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_DS", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_GOT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc64_elf_unhandled_reloc, /* special_function */
1141 "R_PPC64_PLT16_LO_DS", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1149 0, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_bitfield, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_DS", /* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1164 0, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc64_elf_sectoff_reloc, /* special_function */
1171 "R_PPC64_SECTOFF_LO_DS",/* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_DS, /* type */
1179 0, /* rightshift */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 16, /* bitsize */
1182 FALSE, /* pc_relative */
1183 0, /* bitpos */
1184 complain_overflow_signed, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_DS", /* name */
1187 FALSE, /* partial_inplace */
1188 0, /* src_mask */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1191
1192 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1193 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1194 0, /* rightshift */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1196 16, /* bitsize */
1197 FALSE, /* pc_relative */
1198 0, /* bitpos */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc64_elf_toc_reloc, /* special_function */
1201 "R_PPC64_TOC16_LO_DS", /* name */
1202 FALSE, /* partial_inplace */
1203 0, /* src_mask */
1204 0xfffc, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1206
1207 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1208 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1209 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM
1210 0, /* rightshift */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 16, /* bitsize */
1213 FALSE, /* pc_relative */
1214 0, /* bitpos */
1215 complain_overflow_signed, /* complain_on_overflow */
1216 ppc64_elf_unhandled_reloc, /* special_function */
1217 "R_PPC64_PLTGOT16_DS", /* name */
1218 FALSE, /* partial_inplace */
1219 0, /* src_mask */
1220 0xfffc, /* dst_mask */
1221 FALSE), /* pcrel_offset */
1222
1223 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1224 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1225 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1226 0, /* rightshift */
1227 1, /* size (0 = byte, 1 = short, 2 = long) */
1228 16, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 ppc64_elf_unhandled_reloc, /* special_function */
1233 "R_PPC64_PLTGOT16_LO_DS",/* name */
1234 FALSE, /* partial_inplace */
1235 0, /* src_mask */
1236 0xfffc, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
727fc41e 1239 /* Marker relocs for TLS. */
411e1bfb
AM
1240 HOWTO (R_PPC64_TLS,
1241 0, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 32, /* bitsize */
1244 FALSE, /* pc_relative */
1245 0, /* bitpos */
1246 complain_overflow_dont, /* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 "R_PPC64_TLS", /* name */
1249 FALSE, /* partial_inplace */
1250 0, /* src_mask */
1251 0, /* dst_mask */
1252 FALSE), /* pcrel_offset */
1253
727fc41e
AM
1254 HOWTO (R_PPC64_TLSGD,
1255 0, /* rightshift */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 32, /* bitsize */
1258 FALSE, /* pc_relative */
1259 0, /* bitpos */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
1262 "R_PPC64_TLSGD", /* name */
1263 FALSE, /* partial_inplace */
1264 0, /* src_mask */
1265 0, /* dst_mask */
1266 FALSE), /* pcrel_offset */
1267
1268 HOWTO (R_PPC64_TLSLD,
1269 0, /* rightshift */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 32, /* bitsize */
1272 FALSE, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC64_TLSLD", /* name */
1277 FALSE, /* partial_inplace */
1278 0, /* src_mask */
1279 0, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
411e1bfb
AM
1282 /* Computes the load module index of the load module that contains the
1283 definition of its TLS sym. */
1284 HOWTO (R_PPC64_DTPMOD64,
1285 0, /* rightshift */
1286 4, /* size (0 = byte, 1 = short, 2 = long) */
1287 64, /* bitsize */
1288 FALSE, /* pc_relative */
1289 0, /* bitpos */
1290 complain_overflow_dont, /* complain_on_overflow */
1291 ppc64_elf_unhandled_reloc, /* special_function */
1292 "R_PPC64_DTPMOD64", /* name */
1293 FALSE, /* partial_inplace */
1294 0, /* src_mask */
1295 ONES (64), /* dst_mask */
1296 FALSE), /* pcrel_offset */
1297
1298 /* Computes a dtv-relative displacement, the difference between the value
1299 of sym+add and the base address of the thread-local storage block that
1300 contains the definition of sym, minus 0x8000. */
1301 HOWTO (R_PPC64_DTPREL64,
1302 0, /* rightshift */
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1304 64, /* bitsize */
1305 FALSE, /* pc_relative */
1306 0, /* bitpos */
1307 complain_overflow_dont, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc, /* special_function */
1309 "R_PPC64_DTPREL64", /* name */
1310 FALSE, /* partial_inplace */
1311 0, /* src_mask */
1312 ONES (64), /* dst_mask */
1313 FALSE), /* pcrel_offset */
1314
1315 /* A 16 bit dtprel reloc. */
1316 HOWTO (R_PPC64_DTPREL16,
1317 0, /* rightshift */
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1319 16, /* bitsize */
1320 FALSE, /* pc_relative */
1321 0, /* bitpos */
1322 complain_overflow_signed, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc, /* special_function */
1324 "R_PPC64_DTPREL16", /* name */
1325 FALSE, /* partial_inplace */
1326 0, /* src_mask */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1329
1330 /* Like DTPREL16, but no overflow. */
1331 HOWTO (R_PPC64_DTPREL16_LO,
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc, /* special_function */
1339 "R_PPC64_DTPREL16_LO", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HI,
1347 16, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_dont, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc, /* special_function */
1354 "R_PPC64_DTPREL16_HI", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HA,
1362 16, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1364 16, /* bitsize */
1365 FALSE, /* pc_relative */
1366 0, /* bitpos */
1367 complain_overflow_dont, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc, /* special_function */
1369 "R_PPC64_DTPREL16_HA", /* name */
1370 FALSE, /* partial_inplace */
1371 0, /* src_mask */
1372 0xffff, /* dst_mask */
1373 FALSE), /* pcrel_offset */
1374
1375 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHER,
1377 32, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1379 16, /* bitsize */
1380 FALSE, /* pc_relative */
1381 0, /* bitpos */
1382 complain_overflow_dont, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHER", /* name */
1385 FALSE, /* partial_inplace */
1386 0, /* src_mask */
1387 0xffff, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1389
1390 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1392 32, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 16, /* bitsize */
1395 FALSE, /* pc_relative */
1396 0, /* bitpos */
1397 complain_overflow_dont, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHERA", /* name */
1400 FALSE, /* partial_inplace */
1401 0, /* src_mask */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1404
1405 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1406 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1407 48, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 16, /* bitsize */
1410 FALSE, /* pc_relative */
1411 0, /* bitpos */
1412 complain_overflow_dont, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc, /* special_function */
1414 "R_PPC64_DTPREL16_HIGHEST", /* name */
1415 FALSE, /* partial_inplace */
1416 0, /* src_mask */
1417 0xffff, /* dst_mask */
1418 FALSE), /* pcrel_offset */
1419
1420 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1421 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1422 48, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1424 16, /* bitsize */
1425 FALSE, /* pc_relative */
1426 0, /* bitpos */
1427 complain_overflow_dont, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc, /* special_function */
1429 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1430 FALSE, /* partial_inplace */
1431 0, /* src_mask */
1432 0xffff, /* dst_mask */
1433 FALSE), /* pcrel_offset */
1434
1435 /* Like DTPREL16, but for insns with a DS field. */
1436 HOWTO (R_PPC64_DTPREL16_DS,
1437 0, /* rightshift */
1438 1, /* size (0 = byte, 1 = short, 2 = long) */
1439 16, /* bitsize */
1440 FALSE, /* pc_relative */
1441 0, /* bitpos */
1442 complain_overflow_signed, /* complain_on_overflow */
1443 ppc64_elf_unhandled_reloc, /* special_function */
1444 "R_PPC64_DTPREL16_DS", /* name */
1445 FALSE, /* partial_inplace */
1446 0, /* src_mask */
1447 0xfffc, /* dst_mask */
1448 FALSE), /* pcrel_offset */
1449
1450 /* Like DTPREL16_DS, but no overflow. */
1451 HOWTO (R_PPC64_DTPREL16_LO_DS,
1452 0, /* rightshift */
1453 1, /* size (0 = byte, 1 = short, 2 = long) */
1454 16, /* bitsize */
1455 FALSE, /* pc_relative */
1456 0, /* bitpos */
1457 complain_overflow_dont, /* complain_on_overflow */
1458 ppc64_elf_unhandled_reloc, /* special_function */
1459 "R_PPC64_DTPREL16_LO_DS", /* name */
1460 FALSE, /* partial_inplace */
1461 0, /* src_mask */
1462 0xfffc, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1464
1465 /* Computes a tp-relative displacement, the difference between the value of
1466 sym+add and the value of the thread pointer (r13). */
1467 HOWTO (R_PPC64_TPREL64,
1468 0, /* rightshift */
1469 4, /* size (0 = byte, 1 = short, 2 = long) */
1470 64, /* bitsize */
1471 FALSE, /* pc_relative */
1472 0, /* bitpos */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc, /* special_function */
1475 "R_PPC64_TPREL64", /* name */
1476 FALSE, /* partial_inplace */
1477 0, /* src_mask */
1478 ONES (64), /* dst_mask */
1479 FALSE), /* pcrel_offset */
1480
1481 /* A 16 bit tprel reloc. */
1482 HOWTO (R_PPC64_TPREL16,
1483 0, /* rightshift */
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1485 16, /* bitsize */
1486 FALSE, /* pc_relative */
1487 0, /* bitpos */
1488 complain_overflow_signed, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc, /* special_function */
1490 "R_PPC64_TPREL16", /* name */
1491 FALSE, /* partial_inplace */
1492 0, /* src_mask */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1495
1496 /* Like TPREL16, but no overflow. */
1497 HOWTO (R_PPC64_TPREL16_LO,
1498 0, /* rightshift */
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1500 16, /* bitsize */
1501 FALSE, /* pc_relative */
1502 0, /* bitpos */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc, /* special_function */
1505 "R_PPC64_TPREL16_LO", /* name */
1506 FALSE, /* partial_inplace */
1507 0, /* src_mask */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1510
1511 /* Like TPREL16_LO, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HI,
1513 16, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1515 16, /* bitsize */
1516 FALSE, /* pc_relative */
1517 0, /* bitpos */
1518 complain_overflow_dont, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc, /* special_function */
1520 "R_PPC64_TPREL16_HI", /* name */
1521 FALSE, /* partial_inplace */
1522 0, /* src_mask */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1525
1526 /* Like TPREL16_HI, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HA,
1528 16, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1530 16, /* bitsize */
1531 FALSE, /* pc_relative */
1532 0, /* bitpos */
1533 complain_overflow_dont, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc, /* special_function */
1535 "R_PPC64_TPREL16_HA", /* name */
1536 FALSE, /* partial_inplace */
1537 0, /* src_mask */
1538 0xffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1540
1541 /* Like TPREL16_HI, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHER,
1543 32, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1545 16, /* bitsize */
1546 FALSE, /* pc_relative */
1547 0, /* bitpos */
1548 complain_overflow_dont, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc, /* special_function */
1550 "R_PPC64_TPREL16_HIGHER", /* name */
1551 FALSE, /* partial_inplace */
1552 0, /* src_mask */
1553 0xffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1555
1556 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHERA,
1558 32, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1560 16, /* bitsize */
1561 FALSE, /* pc_relative */
1562 0, /* bitpos */
1563 complain_overflow_dont, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc, /* special_function */
1565 "R_PPC64_TPREL16_HIGHERA", /* name */
1566 FALSE, /* partial_inplace */
1567 0, /* src_mask */
1568 0xffff, /* dst_mask */
1569 FALSE), /* pcrel_offset */
1570
1571 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1572 HOWTO (R_PPC64_TPREL16_HIGHEST,
1573 48, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1575 16, /* bitsize */
1576 FALSE, /* pc_relative */
1577 0, /* bitpos */
1578 complain_overflow_dont, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc, /* special_function */
1580 "R_PPC64_TPREL16_HIGHEST", /* name */
1581 FALSE, /* partial_inplace */
1582 0, /* src_mask */
1583 0xffff, /* dst_mask */
1584 FALSE), /* pcrel_offset */
1585
1586 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1587 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1588 48, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1590 16, /* bitsize */
1591 FALSE, /* pc_relative */
1592 0, /* bitpos */
1593 complain_overflow_dont, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc, /* special_function */
1595 "R_PPC64_TPREL16_HIGHESTA", /* name */
1596 FALSE, /* partial_inplace */
1597 0, /* src_mask */
1598 0xffff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1600
1601 /* Like TPREL16, but for insns with a DS field. */
1602 HOWTO (R_PPC64_TPREL16_DS,
1603 0, /* rightshift */
1604 1, /* size (0 = byte, 1 = short, 2 = long) */
1605 16, /* bitsize */
1606 FALSE, /* pc_relative */
1607 0, /* bitpos */
1608 complain_overflow_signed, /* complain_on_overflow */
1609 ppc64_elf_unhandled_reloc, /* special_function */
1610 "R_PPC64_TPREL16_DS", /* name */
1611 FALSE, /* partial_inplace */
1612 0, /* src_mask */
1613 0xfffc, /* dst_mask */
1614 FALSE), /* pcrel_offset */
1615
1616 /* Like TPREL16_DS, but no overflow. */
1617 HOWTO (R_PPC64_TPREL16_LO_DS,
1618 0, /* rightshift */
1619 1, /* size (0 = byte, 1 = short, 2 = long) */
1620 16, /* bitsize */
1621 FALSE, /* pc_relative */
1622 0, /* bitpos */
1623 complain_overflow_dont, /* complain_on_overflow */
1624 ppc64_elf_unhandled_reloc, /* special_function */
1625 "R_PPC64_TPREL16_LO_DS", /* name */
1626 FALSE, /* partial_inplace */
1627 0, /* src_mask */
1628 0xfffc, /* dst_mask */
1629 FALSE), /* pcrel_offset */
1630
1631 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1632 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1633 to the first entry relative to the TOC base (r2). */
1634 HOWTO (R_PPC64_GOT_TLSGD16,
1635 0, /* rightshift */
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1637 16, /* bitsize */
1638 FALSE, /* pc_relative */
1639 0, /* bitpos */
1640 complain_overflow_signed, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc, /* special_function */
1642 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1643 FALSE, /* partial_inplace */
5bd4f169
AM
1644 0, /* src_mask */
1645 0xffff, /* dst_mask */
b34976b6 1646 FALSE), /* pcrel_offset */
5bd4f169 1647
411e1bfb
AM
1648 /* Like GOT_TLSGD16, but no overflow. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM
1650 0, /* rightshift */
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 16, /* bitsize */
b34976b6 1653 FALSE, /* pc_relative */
5bd4f169
AM
1654 0, /* bitpos */
1655 complain_overflow_dont, /* complain_on_overflow */
805fc799 1656 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1657 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1658 FALSE, /* partial_inplace */
5bd4f169
AM
1659 0, /* src_mask */
1660 0xffff, /* dst_mask */
b34976b6 1661 FALSE), /* pcrel_offset */
5bd4f169 1662
411e1bfb
AM
1663 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1664 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM
1665 16, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1667 16, /* bitsize */
b34976b6 1668 FALSE, /* pc_relative */
5bd4f169
AM
1669 0, /* bitpos */
1670 complain_overflow_dont, /* complain_on_overflow */
805fc799 1671 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1672 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1673 FALSE, /* partial_inplace */
5bd4f169
AM
1674 0, /* src_mask */
1675 0xffff, /* dst_mask */
b34976b6 1676 FALSE), /* pcrel_offset */
5bd4f169 1677
411e1bfb
AM
1678 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1679 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1682 16, /* bitsize */
b34976b6 1683 FALSE, /* pc_relative */
5bd4f169 1684 0, /* bitpos */
411e1bfb 1685 complain_overflow_dont, /* complain_on_overflow */
805fc799 1686 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1687 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1688 FALSE, /* partial_inplace */
5bd4f169
AM
1689 0, /* src_mask */
1690 0xffff, /* dst_mask */
b34976b6 1691 FALSE), /* pcrel_offset */
5bd4f169 1692
411e1bfb
AM
1693 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1694 with values (sym+add)@dtpmod and zero, and computes the offset to the
1695 first entry relative to the TOC base (r2). */
1696 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM
1697 0, /* rightshift */
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1699 16, /* bitsize */
b34976b6 1700 FALSE, /* pc_relative */
5bd4f169 1701 0, /* bitpos */
411e1bfb
AM
1702 complain_overflow_signed, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc, /* special_function */
1704 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1705 FALSE, /* partial_inplace */
d006db6c 1706 0, /* src_mask */
411e1bfb 1707 0xffff, /* dst_mask */
b34976b6 1708 FALSE), /* pcrel_offset */
5bd4f169 1709
411e1bfb
AM
1710 /* Like GOT_TLSLD16, but no overflow. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM
1712 0, /* rightshift */
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1714 16, /* bitsize */
b34976b6 1715 FALSE, /* pc_relative */
5bd4f169 1716 0, /* bitpos */
411e1bfb
AM
1717 complain_overflow_dont, /* complain_on_overflow */
1718 ppc64_elf_unhandled_reloc, /* special_function */
1719 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1720 FALSE, /* partial_inplace */
d006db6c 1721 0, /* src_mask */
411e1bfb 1722 0xffff, /* dst_mask */
b34976b6 1723 FALSE), /* pcrel_offset */
5bd4f169 1724
411e1bfb
AM
1725 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1726 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1727 16, /* rightshift */
5bd4f169
AM
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1729 16, /* bitsize */
b34976b6 1730 FALSE, /* pc_relative */
5bd4f169 1731 0, /* bitpos */
411e1bfb 1732 complain_overflow_dont, /* complain_on_overflow */
805fc799 1733 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1734 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1735 FALSE, /* partial_inplace */
d006db6c 1736 0, /* src_mask */
411e1bfb 1737 0xffff, /* dst_mask */
b34976b6 1738 FALSE), /* pcrel_offset */
5bd4f169 1739
411e1bfb
AM
1740 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1741 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1742 16, /* rightshift */
5bd4f169
AM
1743 1, /* size (0 = byte, 1 = short, 2 = long) */
1744 16, /* bitsize */
b34976b6 1745 FALSE, /* pc_relative */
5bd4f169
AM
1746 0, /* bitpos */
1747 complain_overflow_dont, /* complain_on_overflow */
805fc799 1748 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1749 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1750 FALSE, /* partial_inplace */
d006db6c 1751 0, /* src_mask */
411e1bfb 1752 0xffff, /* dst_mask */
b34976b6 1753 FALSE), /* pcrel_offset */
5bd4f169 1754
411e1bfb
AM
1755 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1756 the offset to the entry relative to the TOC base (r2). */
1757 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM
1758 0, /* rightshift */
1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1760 16, /* bitsize */
b34976b6 1761 FALSE, /* pc_relative */
5bd4f169 1762 0, /* bitpos */
411e1bfb 1763 complain_overflow_signed, /* complain_on_overflow */
805fc799 1764 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1765 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1766 FALSE, /* partial_inplace */
d006db6c 1767 0, /* src_mask */
5bd4f169 1768 0xfffc, /* dst_mask */
b34976b6 1769 FALSE), /* pcrel_offset */
5bd4f169 1770
411e1bfb
AM
1771 /* Like GOT_DTPREL16_DS, but no overflow. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1773 0, /* rightshift */
c061c2d8
AM
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1775 16, /* bitsize */
b34976b6 1776 FALSE, /* pc_relative */
5bd4f169 1777 0, /* bitpos */
411e1bfb
AM
1778 complain_overflow_dont, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1781 FALSE, /* partial_inplace */
d006db6c 1782 0, /* src_mask */
c061c2d8 1783 0xfffc, /* dst_mask */
b34976b6 1784 FALSE), /* pcrel_offset */
5bd4f169 1785
411e1bfb
AM
1786 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1787 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1788 16, /* rightshift */
5bd4f169
AM
1789 1, /* size (0 = byte, 1 = short, 2 = long) */
1790 16, /* bitsize */
b34976b6 1791 FALSE, /* pc_relative */
5bd4f169
AM
1792 0, /* bitpos */
1793 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1794 ppc64_elf_unhandled_reloc, /* special_function */
1795 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1796 FALSE, /* partial_inplace */
d006db6c 1797 0, /* src_mask */
411e1bfb 1798 0xffff, /* dst_mask */
b34976b6 1799 FALSE), /* pcrel_offset */
5bd4f169 1800
411e1bfb
AM
1801 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1802 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1803 16, /* rightshift */
1804 1, /* size (0 = byte, 1 = short, 2 = long) */
1805 16, /* bitsize */
1806 FALSE, /* pc_relative */
1807 0, /* bitpos */
1808 complain_overflow_dont, /* complain_on_overflow */
1809 ppc64_elf_unhandled_reloc, /* special_function */
1810 "R_PPC64_GOT_DTPREL16_HA", /* name */
1811 FALSE, /* partial_inplace */
1812 0, /* src_mask */
1813 0xffff, /* dst_mask */
1814 FALSE), /* pcrel_offset */
1815
1816 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1817 offset to the entry relative to the TOC base (r2). */
1818 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM
1819 0, /* rightshift */
1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1821 16, /* bitsize */
b34976b6 1822 FALSE, /* pc_relative */
5bd4f169
AM
1823 0, /* bitpos */
1824 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM
1825 ppc64_elf_unhandled_reloc, /* special_function */
1826 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1827 FALSE, /* partial_inplace */
d006db6c 1828 0, /* src_mask */
ad8e1ba5 1829 0xfffc, /* dst_mask */
b34976b6 1830 FALSE), /* pcrel_offset */
5bd4f169 1831
411e1bfb
AM
1832 /* Like GOT_TPREL16_DS, but no overflow. */
1833 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM
1834 0, /* rightshift */
1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1836 16, /* bitsize */
b34976b6 1837 FALSE, /* pc_relative */
5bd4f169
AM
1838 0, /* bitpos */
1839 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1840 ppc64_elf_unhandled_reloc, /* special_function */
1841 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1842 FALSE, /* partial_inplace */
d006db6c 1843 0, /* src_mask */
ad8e1ba5 1844 0xfffc, /* dst_mask */
b34976b6 1845 FALSE), /* pcrel_offset */
5bd4f169 1846
411e1bfb
AM
1847 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1848 HOWTO (R_PPC64_GOT_TPREL16_HI,
1849 16, /* rightshift */
5bd4f169
AM
1850 1, /* size (0 = byte, 1 = short, 2 = long) */
1851 16, /* bitsize */
b34976b6 1852 FALSE, /* pc_relative */
5bd4f169 1853 0, /* bitpos */
411e1bfb 1854 complain_overflow_dont, /* complain_on_overflow */
805fc799 1855 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1856 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1857 FALSE, /* partial_inplace */
d006db6c 1858 0, /* src_mask */
411e1bfb 1859 0xffff, /* dst_mask */
b34976b6 1860 FALSE), /* pcrel_offset */
5bd4f169 1861
411e1bfb
AM
1862 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1863 HOWTO (R_PPC64_GOT_TPREL16_HA,
1864 16, /* rightshift */
5bd4f169
AM
1865 1, /* size (0 = byte, 1 = short, 2 = long) */
1866 16, /* bitsize */
b34976b6 1867 FALSE, /* pc_relative */
5bd4f169
AM
1868 0, /* bitpos */
1869 complain_overflow_dont, /* complain_on_overflow */
805fc799 1870 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1871 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1872 FALSE, /* partial_inplace */
d006db6c 1873 0, /* src_mask */
411e1bfb 1874 0xffff, /* dst_mask */
b34976b6 1875 FALSE), /* pcrel_offset */
5bd4f169 1876
25f23106
AM
1877 HOWTO (R_PPC64_JMP_IREL, /* type */
1878 0, /* rightshift */
1879 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1880 0, /* bitsize */
1881 FALSE, /* pc_relative */
1882 0, /* bitpos */
1883 complain_overflow_dont, /* complain_on_overflow */
1884 ppc64_elf_unhandled_reloc, /* special_function */
1885 "R_PPC64_JMP_IREL", /* name */
1886 FALSE, /* partial_inplace */
1887 0, /* src_mask */
1888 0, /* dst_mask */
1889 FALSE), /* pcrel_offset */
1890
e054468f
AM
1891 HOWTO (R_PPC64_IRELATIVE, /* type */
1892 0, /* rightshift */
1893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1894 64, /* bitsize */
1895 FALSE, /* pc_relative */
1896 0, /* bitpos */
1897 complain_overflow_dont, /* complain_on_overflow */
1898 bfd_elf_generic_reloc, /* special_function */
1899 "R_PPC64_IRELATIVE", /* name */
1900 FALSE, /* partial_inplace */
1901 0, /* src_mask */
1902 ONES (64), /* dst_mask */
1903 FALSE), /* pcrel_offset */
1904
25f23106
AM
1905 /* A 16 bit relative relocation. */
1906 HOWTO (R_PPC64_REL16, /* type */
1907 0, /* rightshift */
1908 1, /* size (0 = byte, 1 = short, 2 = long) */
1909 16, /* bitsize */
1910 TRUE, /* pc_relative */
1911 0, /* bitpos */
1912 complain_overflow_bitfield, /* complain_on_overflow */
1913 bfd_elf_generic_reloc, /* special_function */
1914 "R_PPC64_REL16", /* name */
1915 FALSE, /* partial_inplace */
1916 0, /* src_mask */
1917 0xffff, /* dst_mask */
1918 TRUE), /* pcrel_offset */
1919
1920 /* A 16 bit relative relocation without overflow. */
1921 HOWTO (R_PPC64_REL16_LO, /* type */
1922 0, /* rightshift */
1923 1, /* size (0 = byte, 1 = short, 2 = long) */
1924 16, /* bitsize */
1925 TRUE, /* pc_relative */
1926 0, /* bitpos */
1927 complain_overflow_dont,/* complain_on_overflow */
1928 bfd_elf_generic_reloc, /* special_function */
1929 "R_PPC64_REL16_LO", /* name */
1930 FALSE, /* partial_inplace */
1931 0, /* src_mask */
1932 0xffff, /* dst_mask */
1933 TRUE), /* pcrel_offset */
1934
1935 /* The high order 16 bits of a relative address. */
1936 HOWTO (R_PPC64_REL16_HI, /* type */
1937 16, /* rightshift */
1938 1, /* size (0 = byte, 1 = short, 2 = long) */
1939 16, /* bitsize */
1940 TRUE, /* pc_relative */
1941 0, /* bitpos */
1942 complain_overflow_dont, /* complain_on_overflow */
1943 bfd_elf_generic_reloc, /* special_function */
1944 "R_PPC64_REL16_HI", /* name */
1945 FALSE, /* partial_inplace */
1946 0, /* src_mask */
1947 0xffff, /* dst_mask */
1948 TRUE), /* pcrel_offset */
1949
1950 /* The high order 16 bits of a relative address, plus 1 if the contents of
1951 the low 16 bits, treated as a signed number, is negative. */
1952 HOWTO (R_PPC64_REL16_HA, /* type */
1953 16, /* rightshift */
1954 1, /* size (0 = byte, 1 = short, 2 = long) */
1955 16, /* bitsize */
1956 TRUE, /* pc_relative */
1957 0, /* bitpos */
1958 complain_overflow_dont, /* complain_on_overflow */
1959 ppc64_elf_ha_reloc, /* special_function */
1960 "R_PPC64_REL16_HA", /* name */
1961 FALSE, /* partial_inplace */
1962 0, /* src_mask */
1963 0xffff, /* dst_mask */
1964 TRUE), /* pcrel_offset */
1965
5bd4f169
AM
1966 /* GNU extension to record C++ vtable hierarchy. */
1967 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1968 0, /* rightshift */
1969 0, /* size (0 = byte, 1 = short, 2 = long) */
1970 0, /* bitsize */
b34976b6 1971 FALSE, /* pc_relative */
5bd4f169
AM
1972 0, /* bitpos */
1973 complain_overflow_dont, /* complain_on_overflow */
1974 NULL, /* special_function */
1975 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1976 FALSE, /* partial_inplace */
5bd4f169
AM
1977 0, /* src_mask */
1978 0, /* dst_mask */
b34976b6 1979 FALSE), /* pcrel_offset */
5bd4f169
AM
1980
1981 /* GNU extension to record C++ vtable member usage. */
1982 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1983 0, /* rightshift */
1984 0, /* size (0 = byte, 1 = short, 2 = long) */
1985 0, /* bitsize */
b34976b6 1986 FALSE, /* pc_relative */
5bd4f169
AM
1987 0, /* bitpos */
1988 complain_overflow_dont, /* complain_on_overflow */
1989 NULL, /* special_function */
1990 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1991 FALSE, /* partial_inplace */
5bd4f169
AM
1992 0, /* src_mask */
1993 0, /* dst_mask */
b34976b6 1994 FALSE), /* pcrel_offset */
5bd4f169
AM
1995};
1996
1997\f
1998/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1999 be done. */
2000
2001static void
4ce794b7 2002ppc_howto_init (void)
5bd4f169
AM
2003{
2004 unsigned int i, type;
2005
2006 for (i = 0;
2007 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2008 i++)
2009 {
2010 type = ppc64_elf_howto_raw[i].type;
2011 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2012 / sizeof (ppc64_elf_howto_table[0])));
2013 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2014 }
2015}
2016
2017static reloc_howto_type *
4ce794b7
AM
2018ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2019 bfd_reloc_code_real_type code)
5bd4f169 2020{
411e1bfb 2021 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM
2022
2023 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2024 /* Initialize howto table if needed. */
2025 ppc_howto_init ();
2026
4ce794b7 2027 switch (code)
5bd4f169
AM
2028 {
2029 default:
4ce794b7 2030 return NULL;
5bd4f169 2031
411e1bfb
AM
2032 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2033 break;
2034 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2035 break;
2036 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2037 break;
2038 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2039 break;
2040 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2041 break;
2042 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2043 break;
2044 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2045 break;
411e1bfb 2046 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2047 break;
411e1bfb 2048 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2049 break;
411e1bfb 2050 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2051 break;
411e1bfb 2052 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2053 break;
411e1bfb 2054 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2055 break;
411e1bfb 2056 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2057 break;
411e1bfb 2058 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2059 break;
411e1bfb 2060 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2061 break;
411e1bfb 2062 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2063 break;
411e1bfb 2064 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2065 break;
411e1bfb 2066 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2067 break;
411e1bfb 2068 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2069 break;
411e1bfb 2070 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2071 break;
411e1bfb 2072 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2073 break;
411e1bfb 2074 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2075 break;
411e1bfb 2076 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2077 break;
411e1bfb 2078 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2079 break;
411e1bfb 2080 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2081 break;
411e1bfb 2082 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2083 break;
411e1bfb 2084 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2085 break;
411e1bfb 2086 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2087 break;
411e1bfb 2088 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2089 break;
411e1bfb 2090 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2091 break;
411e1bfb 2092 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2093 break;
411e1bfb 2094 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2095 break;
411e1bfb 2096 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2097 break;
411e1bfb 2098 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2099 break;
411e1bfb 2100 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2101 break;
411e1bfb 2102 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2103 break;
411e1bfb 2104 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2105 break;
411e1bfb 2106 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2107 break;
411e1bfb 2108 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2109 break;
411e1bfb 2110 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2111 break;
411e1bfb 2112 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2113 break;
411e1bfb 2114 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2115 break;
411e1bfb 2116 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2117 break;
411e1bfb 2118 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2119 break;
411e1bfb 2120 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2121 break;
411e1bfb 2122 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2123 break;
411e1bfb 2124 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2125 break;
411e1bfb 2126 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2127 break;
411e1bfb 2128 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2129 break;
411e1bfb 2130 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2131 break;
411e1bfb 2132 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2133 break;
411e1bfb 2134 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2135 break;
411e1bfb 2136 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2137 break;
411e1bfb 2138 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2139 break;
411e1bfb 2140 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2141 break;
411e1bfb 2142 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2143 break;
411e1bfb 2144 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2145 break;
411e1bfb 2146 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2147 break;
411e1bfb 2148 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2149 break;
411e1bfb 2150 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2151 break;
727fc41e
AM
2152 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2153 break;
2154 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2155 break;
411e1bfb 2156 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2157 break;
411e1bfb 2158 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2159 break;
411e1bfb 2160 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2161 break;
411e1bfb 2162 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2163 break;
411e1bfb 2164 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2165 break;
411e1bfb 2166 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2167 break;
411e1bfb
AM
2168 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2169 break;
2170 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2171 break;
2172 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2173 break;
2174 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2175 break;
2176 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2177 break;
2178 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2179 break;
2180 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2181 break;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2183 break;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2185 break;
2186 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2187 break;
2188 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2189 break;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2191 break;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2193 break;
2194 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2195 break;
2196 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2197 break;
2198 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2199 break;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2201 break;
2202 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2203 break;
2204 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2205 break;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2207 break;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2209 break;
2210 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2211 break;
2212 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2213 break;
2214 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2215 break;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2217 break;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2219 break;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2221 break;
2222 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2223 break;
2224 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2225 break;
2226 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2227 break;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2229 break;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2231 break;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2233 break;
25f23106
AM
2234 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2235 break;
2236 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2237 break;
2238 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2239 break;
2240 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2241 break;
411e1bfb
AM
2242 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2243 break;
2244 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM
2245 break;
2246 }
2247
4ce794b7 2248 return ppc64_elf_howto_table[r];
5bd4f169
AM
2249};
2250
157090f7
AM
2251static reloc_howto_type *
2252ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2253 const char *r_name)
2254{
2255 unsigned int i;
2256
2257 for (i = 0;
2258 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2259 i++)
2260 if (ppc64_elf_howto_raw[i].name != NULL
2261 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2262 return &ppc64_elf_howto_raw[i];
2263
2264 return NULL;
2265}
2266
5bd4f169
AM
2267/* Set the howto pointer for a PowerPC ELF reloc. */
2268
2269static void
4ce794b7
AM
2270ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2271 Elf_Internal_Rela *dst)
5bd4f169 2272{
65f38f15
AM
2273 unsigned int type;
2274
ef60b7ff 2275 /* Initialize howto table if needed. */
5bd4f169 2276 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
2277 ppc_howto_init ();
2278
65f38f15 2279 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ
2280 if (type >= (sizeof (ppc64_elf_howto_table)
2281 / sizeof (ppc64_elf_howto_table[0])))
2282 {
2283 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC
2284 abfd, (int) type);
2285 type = R_PPC64_NONE;
d0fb9a8d 2286 }
65f38f15 2287 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM
2288}
2289
04c9666a 2290/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM
2291
2292static bfd_reloc_status_type
4ce794b7
AM
2293ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
5bd4f169 2296{
805fc799
AM
2297 /* If this is a relocatable link (output_bfd test tells us), just
2298 call the generic function. Any adjustment will be done at final
2299 link time. */
2300 if (output_bfd != NULL)
cedb70c5 2301 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2302 input_section, output_bfd, error_message);
2303
2304 /* Adjust the addend for sign extension of the low 16 bits.
2305 We won't actually be using the low 16 bits, so trashing them
2306 doesn't matter. */
2307 reloc_entry->addend += 0x8000;
2308 return bfd_reloc_continue;
2309}
5bd4f169 2310
2441e016
AM
2311static bfd_reloc_status_type
2312ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2313 void *data, asection *input_section,
2314 bfd *output_bfd, char **error_message)
2315{
2316 if (output_bfd != NULL)
2317 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2318 input_section, output_bfd, error_message);
2319
699733f6
AM
2320 if (strcmp (symbol->section->name, ".opd") == 0
2321 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM
2322 {
2323 bfd_vma dest = opd_entry_value (symbol->section,
2324 symbol->value + reloc_entry->addend,
2325 NULL, NULL);
2326 if (dest != (bfd_vma) -1)
2327 reloc_entry->addend = dest - (symbol->value
2328 + symbol->section->output_section->vma
2329 + symbol->section->output_offset);
2330 }
2331 return bfd_reloc_continue;
2332}
2333
805fc799 2334static bfd_reloc_status_type
4ce794b7
AM
2335ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2336 void *data, asection *input_section,
2337 bfd *output_bfd, char **error_message)
805fc799
AM
2338{
2339 long insn;
04c9666a 2340 enum elf_ppc64_reloc_type r_type;
805fc799
AM
2341 bfd_size_type octets;
2342 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2343 bfd_boolean is_power4 = FALSE;
805fc799
AM
2344
2345 /* If this is a relocatable link (output_bfd test tells us), just
2346 call the generic function. Any adjustment will be done at final
2347 link time. */
5bd4f169 2348 if (output_bfd != NULL)
cedb70c5 2349 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2350 input_section, output_bfd, error_message);
2351
2352 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2353 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2354 insn &= ~(0x01 << 21);
4ce794b7 2355 r_type = reloc_entry->howto->type;
805fc799
AM
2356 if (r_type == R_PPC64_ADDR14_BRTAKEN
2357 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2358 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM
2359
2360 if (is_power4)
5bd4f169 2361 {
805fc799
AM
2362 /* Set 'a' bit. This is 0b00010 in BO field for branch
2363 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2364 for branch on CTR insns (BO == 1a00t or 1a01t). */
2365 if ((insn & (0x14 << 21)) == (0x04 << 21))
2366 insn |= 0x02 << 21;
2367 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2368 insn |= 0x08 << 21;
2369 else
2441e016 2370 goto out;
5bd4f169 2371 }
805fc799
AM
2372 else
2373 {
2374 bfd_vma target = 0;
2375 bfd_vma from;
5bd4f169 2376
805fc799
AM
2377 if (!bfd_is_com_section (symbol->section))
2378 target = symbol->value;
2379 target += symbol->section->output_section->vma;
2380 target += symbol->section->output_offset;
2381 target += reloc_entry->addend;
5bd4f169 2382
805fc799
AM
2383 from = (reloc_entry->address
2384 + input_section->output_offset
2385 + input_section->output_section->vma);
5bd4f169 2386
805fc799
AM
2387 /* Invert 'y' bit if not the default. */
2388 if ((bfd_signed_vma) (target - from) < 0)
2389 insn ^= 0x01 << 21;
2390 }
4ce794b7 2391 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM
2392 out:
2393 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2394 input_section, output_bfd, error_message);
805fc799 2395}
5bd4f169 2396
805fc799 2397static bfd_reloc_status_type
4ce794b7
AM
2398ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2399 void *data, asection *input_section,
2400 bfd *output_bfd, char **error_message)
805fc799
AM
2401{
2402 /* If this is a relocatable link (output_bfd test tells us), just
2403 call the generic function. Any adjustment will be done at final
2404 link time. */
2405 if (output_bfd != NULL)
cedb70c5 2406 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2407 input_section, output_bfd, error_message);
5bd4f169 2408
805fc799
AM
2409 /* Subtract the symbol section base address. */
2410 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM
2411 return bfd_reloc_continue;
2412}
2413
805fc799 2414static bfd_reloc_status_type
4ce794b7
AM
2415ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2416 void *data, asection *input_section,
2417 bfd *output_bfd, char **error_message)
805fc799
AM
2418{
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2421 link time. */
2422 if (output_bfd != NULL)
cedb70c5 2423 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2424 input_section, output_bfd, error_message);
2425
2426 /* Subtract the symbol section base address. */
2427 reloc_entry->addend -= symbol->section->output_section->vma;
2428
2429 /* Adjust the addend for sign extension of the low 16 bits. */
2430 reloc_entry->addend += 0x8000;
2431 return bfd_reloc_continue;
2432}
2433
2434static bfd_reloc_status_type
4ce794b7
AM
2435ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2436 void *data, asection *input_section,
2437 bfd *output_bfd, char **error_message)
805fc799
AM
2438{
2439 bfd_vma TOCstart;
2440
2441 /* If this is a relocatable link (output_bfd test tells us), just
2442 call the generic function. Any adjustment will be done at final
2443 link time. */
2444 if (output_bfd != NULL)
cedb70c5 2445 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2446 input_section, output_bfd, error_message);
2447
2448 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2449 if (TOCstart == 0)
2450 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2451
2452 /* Subtract the TOC base address. */
2453 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2454 return bfd_reloc_continue;
2455}
2456
2457static bfd_reloc_status_type
4ce794b7
AM
2458ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2459 void *data, asection *input_section,
2460 bfd *output_bfd, char **error_message)
805fc799
AM
2461{
2462 bfd_vma TOCstart;
2463
2464 /* If this is a relocatable link (output_bfd test tells us), just
2465 call the generic function. Any adjustment will be done at final
2466 link time. */
2467 if (output_bfd != NULL)
cedb70c5 2468 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2469 input_section, output_bfd, error_message);
2470
2471 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2472 if (TOCstart == 0)
2473 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2474
2475 /* Subtract the TOC base address. */
2476 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2477
2478 /* Adjust the addend for sign extension of the low 16 bits. */
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2481}
2482
2483static bfd_reloc_status_type
4ce794b7
AM
2484ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
805fc799
AM
2487{
2488 bfd_vma TOCstart;
2489 bfd_size_type octets;
2490
2491 /* If this is a relocatable link (output_bfd test tells us), just
2492 call the generic function. Any adjustment will be done at final
2493 link time. */
2494 if (output_bfd != NULL)
cedb70c5 2495 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2496 input_section, output_bfd, error_message);
2497
2498 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2499 if (TOCstart == 0)
2500 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2501
2502 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2503 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2504 return bfd_reloc_ok;
2505}
2506
2507static bfd_reloc_status_type
4ce794b7
AM
2508ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2509 void *data, asection *input_section,
2510 bfd *output_bfd, char **error_message)
805fc799
AM
2511{
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2514 link time. */
2515 if (output_bfd != NULL)
cedb70c5 2516 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2517 input_section, output_bfd, error_message);
2518
2519 if (error_message != NULL)
2520 {
2521 static char buf[60];
2522 sprintf (buf, "generic linker can't handle %s",
2523 reloc_entry->howto->name);
2524 *error_message = buf;
2525 }
2526 return bfd_reloc_dangerous;
2527}
2528
927be08e
AM
2529/* Track GOT entries needed for a given symbol. We might need more
2530 than one got entry per symbol. */
2531struct got_entry
2532{
2533 struct got_entry *next;
2534
2535 /* The symbol addend that we'll be placing in the GOT. */
2536 bfd_vma addend;
2537
2538 /* Unlike other ELF targets, we use separate GOT entries for the same
2539 symbol referenced from different input files. This is to support
2540 automatic multiple TOC/GOT sections, where the TOC base can vary
2541 from one input file to another. After partitioning into TOC groups
2542 we merge entries within the group.
2543
2544 Point to the BFD owning this GOT entry. */
2545 bfd *owner;
2546
2547 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2548 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2549 unsigned char tls_type;
927be08e
AM
2550
2551 /* Non-zero if got.ent points to real entry. */
f961d9dd 2552 unsigned char is_indirect;
927be08e
AM
2553
2554 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2555 union
2556 {
2557 bfd_signed_vma refcount;
2558 bfd_vma offset;
2559 struct got_entry *ent;
2560 } got;
2561};
2562
2563/* The same for PLT. */
2564struct plt_entry
2565{
2566 struct plt_entry *next;
2567
2568 bfd_vma addend;
2569
2570 union
2571 {
2572 bfd_signed_vma refcount;
2573 bfd_vma offset;
2574 } plt;
2575};
2576
e717da7e
AM
2577struct ppc64_elf_obj_tdata
2578{
2579 struct elf_obj_tdata elf;
2580
2581 /* Shortcuts to dynamic linker sections. */
2582 asection *got;
2583 asection *relgot;
2584
b3fac117
AM
2585 /* Used during garbage collection. We attach global symbols defined
2586 on removed .opd entries to this section so that the sym is removed. */
2587 asection *deleted_section;
81688140 2588
927be08e 2589 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2590 sections means we potentially need one of these for each input bfd. */
927be08e 2591 struct got_entry tlsld_got;
8860955f
AM
2592
2593 /* A copy of relocs before they are modified for --emit-relocs. */
2594 Elf_Internal_Rela *opd_relocs;
e717da7e
AM
2595};
2596
2597#define ppc64_elf_tdata(bfd) \
2598 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2599
2600#define ppc64_tlsld_got(bfd) \
2601 (&ppc64_elf_tdata (bfd)->tlsld_got)
2602
0c8d6e5c
AM
2603#define is_ppc64_elf(bfd) \
2604 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2605 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2606
e717da7e
AM
2607/* Override the generic function because we store some extras. */
2608
2609static bfd_boolean
2610ppc64_elf_mkobject (bfd *abfd)
2611{
0ffa91dd 2612 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2613 PPC64_ELF_DATA);
e717da7e
AM
2614}
2615
feee612b
AM
2616/* Fix bad default arch selected for a 64 bit input bfd when the
2617 default is 32 bit. */
2618
b34976b6 2619static bfd_boolean
4ce794b7 2620ppc64_elf_object_p (bfd *abfd)
feee612b
AM
2621{
2622 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2623 {
2624 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2625
2626 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2627 {
2628 /* Relies on arch after 32 bit default being 64 bit default. */
2629 abfd->arch_info = abfd->arch_info->next;
2630 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2631 }
2632 }
b34976b6 2633 return TRUE;
feee612b
AM
2634}
2635
d37c89e5
AM
2636/* Support for core dump NOTE sections. */
2637
2638static bfd_boolean
2639ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2640{
eea6121a 2641 size_t offset, size;
d37c89e5
AM
2642
2643 if (note->descsz != 504)
2644 return FALSE;
2645
2646 /* pr_cursig */
2647 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2648
2649 /* pr_pid */
2650 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2651
2652 /* pr_reg */
2653 offset = 112;
eea6121a 2654 size = 384;
d37c89e5
AM
2655
2656 /* Make a ".reg/999" section. */
2657 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2658 size, note->descpos + offset);
d37c89e5
AM
2659}
2660
2661static bfd_boolean
2662ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2663{
2664 if (note->descsz != 136)
2665 return FALSE;
2666
2667 elf_tdata (abfd)->core_program
2668 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2669 elf_tdata (abfd)->core_command
2670 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2671
2672 return TRUE;
2673}
2674
183e98be
AM
2675static char *
2676ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2677 ...)
2678{
2679 switch (note_type)
2680 {
2681 default:
2682 return NULL;
2683
2684 case NT_PRPSINFO:
2685 {
2686 char data[136];
2687 va_list ap;
2688
2689 va_start (ap, note_type);
2690 memset (data, 0, 40);
2691 strncpy (data + 40, va_arg (ap, const char *), 16);
2692 strncpy (data + 56, va_arg (ap, const char *), 80);
2693 va_end (ap);
2694 return elfcore_write_note (abfd, buf, bufsiz,
2695 "CORE", note_type, data, sizeof (data));
2696 }
2697
2698 case NT_PRSTATUS:
2699 {
2700 char data[504];
2701 va_list ap;
2702 long pid;
2703 int cursig;
2704 const void *greg;
2705
2706 va_start (ap, note_type);
2707 memset (data, 0, 112);
2708 pid = va_arg (ap, long);
2709 bfd_put_32 (abfd, pid, data + 32);
2710 cursig = va_arg (ap, int);
2711 bfd_put_16 (abfd, cursig, data + 12);
2712 greg = va_arg (ap, const void *);
2713 memcpy (data + 112, greg, 384);
2714 memset (data + 496, 0, 8);
2715 va_end (ap);
2716 return elfcore_write_note (abfd, buf, bufsiz,
2717 "CORE", note_type, data, sizeof (data));
2718 }
2719 }
2720}
2721
5bd4f169
AM
2722/* Merge backend specific data from an object file to the output
2723 object file when linking. */
2f6d9989 2724
b34976b6 2725static bfd_boolean
4ce794b7 2726ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2727{
5bd4f169
AM
2728 /* Check if we have the same endianess. */
2729 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2730 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM
2731 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2732 {
2733 const char *msg;
2734
2735 if (bfd_big_endian (ibfd))
d003868e 2736 msg = _("%B: compiled for a big endian system "
4ce794b7 2737 "and target is little endian");
5bd4f169 2738 else
d003868e 2739 msg = _("%B: compiled for a little endian system "
4ce794b7 2740 "and target is big endian");
5bd4f169 2741
d003868e 2742 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM
2743
2744 bfd_set_error (bfd_error_wrong_format);
b34976b6 2745 return FALSE;
5bd4f169
AM
2746 }
2747
b34976b6 2748 return TRUE;
5bd4f169 2749}
f0abc2a1 2750
5d35169e
AM
2751/* Add extra PPC sections. */
2752
b35d266b 2753static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2754{
0112cd26
NC
2755 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2756 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2757 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2758 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2759 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2760 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2761 { NULL, 0, 0, 0, 0 }
5d35169e
AM
2762};
2763
7c8fe5c4
AM
2764enum _ppc64_sec_type {
2765 sec_normal = 0,
2766 sec_opd = 1,
2767 sec_toc = 2
2768};
2769
f0abc2a1
AM
2770struct _ppc64_elf_section_data
2771{
2772 struct bfd_elf_section_data elf;
411e1bfb 2773
f0abc2a1
AM
2774 union
2775 {
74f0fb50
AM
2776 /* An array with one entry for each opd function descriptor. */
2777 struct _opd_sec_data
2778 {
2779 /* Points to the function code section for local opd entries. */
2780 asection **func_sec;
2781
2782 /* After editing .opd, adjust references to opd local syms. */
2783 long *adjust;
2784 } opd;
7c8fe5c4 2785
3a71aa26
AM
2786 /* An array for toc sections, indexed by offset/8. */
2787 struct _toc_sec_data
2788 {
2789 /* Specifies the relocation symbol index used at a given toc offset. */
2790 unsigned *symndx;
2791
2792 /* And the relocation addend. */
2793 bfd_vma *add;
2794 } toc;
7c8fe5c4
AM
2795 } u;
2796
2797 enum _ppc64_sec_type sec_type:2;
411e1bfb 2798
7c8fe5c4
AM
2799 /* Flag set when small branches are detected. Used to
2800 select suitable defaults for the stub group size. */
2801 unsigned int has_14bit_branch:1;
f0abc2a1
AM
2802};
2803
2804#define ppc64_elf_section_data(sec) \
411e1bfb 2805 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM
2806
2807static bfd_boolean
4ce794b7 2808ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2809{
f592407e
AM
2810 if (!sec->used_by_bfd)
2811 {
2812 struct _ppc64_elf_section_data *sdata;
2813 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2814
f592407e
AM
2815 sdata = bfd_zalloc (abfd, amt);
2816 if (sdata == NULL)
2817 return FALSE;
2818 sec->used_by_bfd = sdata;
2819 }
f0abc2a1
AM
2820
2821 return _bfd_elf_new_section_hook (abfd, sec);
2822}
4025353c 2823
74f0fb50 2824static struct _opd_sec_data *
4025353c
AM
2825get_opd_info (asection * sec)
2826{
2827 if (sec != NULL
2828 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 2829 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 2830 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM
2831 return NULL;
2832}
90e3cdf2
JJ
2833\f
2834/* Parameters for the qsort hook. */
90e3cdf2
JJ
2835static bfd_boolean synthetic_relocatable;
2836
699733f6 2837/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ
2838
2839static int
2840compare_symbols (const void *ap, const void *bp)
2841{
2842 const asymbol *a = * (const asymbol **) ap;
2843 const asymbol *b = * (const asymbol **) bp;
2844
699733f6
AM
2845 /* Section symbols first. */
2846 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2847 return -1;
699733f6 2848 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ
2849 return 1;
2850
699733f6 2851 /* then .opd symbols. */
ffcfec52
AM
2852 if (strcmp (a->section->name, ".opd") == 0
2853 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 2854 return -1;
ffcfec52
AM
2855 if (strcmp (a->section->name, ".opd") != 0
2856 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ
2857 return 1;
2858
699733f6 2859 /* then other code symbols. */
90e3cdf2
JJ
2860 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2861 == (SEC_CODE | SEC_ALLOC)
2862 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2863 != (SEC_CODE | SEC_ALLOC))
2864 return -1;
2865
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 != (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 == (SEC_CODE | SEC_ALLOC))
2870 return 1;
2871
2872 if (synthetic_relocatable)
2873 {
2874 if (a->section->id < b->section->id)
2875 return -1;
2876
2877 if (a->section->id > b->section->id)
2878 return 1;
2879 }
2880
2881 if (a->value + a->section->vma < b->value + b->section->vma)
2882 return -1;
2883
2884 if (a->value + a->section->vma > b->value + b->section->vma)
2885 return 1;
2886
4d35a0aa
AM
2887 /* For syms with the same value, prefer strong dynamic global function
2888 syms over other syms. */
2889 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2890 return -1;
2891
2892 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2893 return 1;
2894
2895 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2896 return -1;
2897
2898 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2899 return 1;
2900
2901 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2902 return -1;
2903
2904 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2905 return 1;
2906
2907 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2908 return -1;
2909
2910 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2911 return 1;
2912
90e3cdf2
JJ
2913 return 0;
2914}
2915
699733f6 2916/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2917
699733f6
AM
2918static asymbol *
2919sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2920{
699733f6 2921 long mid;
90e3cdf2 2922
699733f6
AM
2923 if (id == -1)
2924 {
2925 while (lo < hi)
2926 {
2927 mid = (lo + hi) >> 1;
2928 if (syms[mid]->value + syms[mid]->section->vma < value)
2929 lo = mid + 1;
2930 else if (syms[mid]->value + syms[mid]->section->vma > value)
2931 hi = mid;
2932 else
2933 return syms[mid];
2934 }
2935 }
2936 else
2937 {
2938 while (lo < hi)
2939 {
2940 mid = (lo + hi) >> 1;
2941 if (syms[mid]->section->id < id)
2942 lo = mid + 1;
2943 else if (syms[mid]->section->id > id)
2944 hi = mid;
2945 else if (syms[mid]->value < value)
2946 lo = mid + 1;
2947 else if (syms[mid]->value > value)
2948 hi = mid;
2949 else
2950 return syms[mid];
2951 }
2952 }
2953 return NULL;
90e3cdf2
JJ
2954}
2955
468392fb
AM
2956static bfd_boolean
2957section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2958{
2959 bfd_vma vma = *(bfd_vma *) ptr;
2960 return ((section->flags & SEC_ALLOC) != 0
2961 && section->vma <= vma
2962 && vma < section->vma + section->size);
2963}
2964
699733f6 2965/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 2966 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ
2967
2968static long
a7535cf3
AM
2969ppc64_elf_get_synthetic_symtab (bfd *abfd,
2970 long static_count, asymbol **static_syms,
2971 long dyn_count, asymbol **dyn_syms,
c9727e01 2972 asymbol **ret)
90e3cdf2
JJ
2973{
2974 asymbol *s;
699733f6
AM
2975 long i;
2976 long count;
90e3cdf2 2977 char *names;
a7535cf3 2978 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2979 asection *opd;
90e3cdf2 2980 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2981 asymbol **syms;
90e3cdf2
JJ
2982
2983 *ret = NULL;
2984
2985 opd = bfd_get_section_by_name (abfd, ".opd");
2986 if (opd == NULL)
2987 return 0;
2988
a7535cf3 2989 symcount = static_count;
c9727e01 2990 if (!relocatable)
a7535cf3 2991 symcount += dyn_count;
90e3cdf2 2992 if (symcount == 0)
c9727e01 2993 return 0;
90e3cdf2 2994
a7535cf3
AM
2995 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2996 if (syms == NULL)
7356fed5 2997 return -1;
a7535cf3
AM
2998
2999 if (!relocatable && static_count != 0 && dyn_count != 0)
3000 {
3001 /* Use both symbol tables. */
3002 memcpy (syms, static_syms, static_count * sizeof (*syms));
3003 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3004 }
3005 else if (!relocatable && static_count == 0)
3006 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3007 else
3008 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3009
90e3cdf2 3010 synthetic_relocatable = relocatable;
595da8c5 3011 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3012
c9727e01
AM
3013 if (!relocatable && symcount > 1)
3014 {
3015 long j;
3016 /* Trim duplicate syms, since we may have merged the normal and
3017 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3018 different values, so trim any with the same value. */
c9727e01
AM
3019 for (i = 1, j = 1; i < symcount; ++i)
3020 if (syms[i - 1]->value + syms[i - 1]->section->vma
3021 != syms[i]->value + syms[i]->section->vma)
3022 syms[j++] = syms[i];
3023 symcount = j;
3024 }
3025
699733f6 3026 i = 0;
ffcfec52 3027 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM
3028 ++i;
3029 codesecsym = i;
90e3cdf2 3030
699733f6
AM
3031 for (; i < symcount; ++i)
3032 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3033 != (SEC_CODE | SEC_ALLOC))
3034 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3035 break;
3036 codesecsymend = i;
90e3cdf2 3037
699733f6
AM
3038 for (; i < symcount; ++i)
3039 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3040 break;
3041 secsymend = i;
90e3cdf2 3042
699733f6 3043 for (; i < symcount; ++i)
ffcfec52 3044 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM
3045 break;
3046 opdsymend = i;
90e3cdf2 3047
699733f6
AM
3048 for (; i < symcount; ++i)
3049 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 != (SEC_CODE | SEC_ALLOC))
3051 break;
3052 symcount = i;
3053
c9727e01 3054 count = 0;
90e3cdf2 3055
699733f6 3056 if (relocatable)
90e3cdf2 3057 {
699733f6
AM
3058 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3059 arelent *r;
3060 size_t size;
3061 long relcount;
90e3cdf2 3062
468392fb
AM
3063 if (opdsymend == secsymend)
3064 goto done;
3065
699733f6 3066 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3067 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3068 if (relcount == 0)
c9727e01 3069 goto done;
90e3cdf2 3070
7356fed5
AM
3071 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3072 {
3073 count = -1;
3074 goto done;
3075 }
3076
699733f6 3077 size = 0;
595da8c5 3078 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM
3079 {
3080 asymbol *sym;
90e3cdf2 3081
595da8c5 3082 while (r < opd->relocation + relcount
699733f6
AM
3083 && r->address < syms[i]->value + opd->vma)
3084 ++r;
90e3cdf2 3085
595da8c5 3086 if (r == opd->relocation + relcount)
699733f6 3087 break;
90e3cdf2 3088
699733f6
AM
3089 if (r->address != syms[i]->value + opd->vma)
3090 continue;
90e3cdf2 3091
699733f6
AM
3092 if (r->howto->type != R_PPC64_ADDR64)
3093 continue;
90e3cdf2 3094
699733f6
AM
3095 sym = *r->sym_ptr_ptr;
3096 if (!sym_exists_at (syms, opdsymend, symcount,
3097 sym->section->id, sym->value + r->addend))
3098 {
3099 ++count;
3100 size += sizeof (asymbol);
3101 size += strlen (syms[i]->name) + 2;
3102 }
3103 }
90e3cdf2 3104
699733f6
AM
3105 s = *ret = bfd_malloc (size);
3106 if (s == NULL)
3107 {
7356fed5 3108 count = -1;
c9727e01 3109 goto done;
699733f6 3110 }
90e3cdf2 3111
699733f6 3112 names = (char *) (s + count);
90e3cdf2 3113
595da8c5 3114 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3115 {
699733f6 3116 asymbol *sym;
90e3cdf2 3117
595da8c5 3118 while (r < opd->relocation + relcount
699733f6
AM
3119 && r->address < syms[i]->value + opd->vma)
3120 ++r;
90e3cdf2 3121
595da8c5 3122 if (r == opd->relocation + relcount)
699733f6
AM
3123 break;
3124
3125 if (r->address != syms[i]->value + opd->vma)
3126 continue;
3127
3128 if (r->howto->type != R_PPC64_ADDR64)
3129 continue;
90e3cdf2 3130
699733f6
AM
3131 sym = *r->sym_ptr_ptr;
3132 if (!sym_exists_at (syms, opdsymend, symcount,
3133 sym->section->id, sym->value + r->addend))
3134 {
3135 size_t len;
3136
3137 *s = *syms[i];
6ba2a415 3138 s->flags |= BSF_SYNTHETIC;
699733f6
AM
3139 s->section = sym->section;
3140 s->value = sym->value + r->addend;
3141 s->name = names;
3142 *names++ = '.';
3143 len = strlen (syms[i]->name);
3144 memcpy (names, syms[i]->name, len + 1);
3145 names += len + 1;
6f610d07
UW
3146 /* Have udata.p point back to the original symbol this
3147 synthetic symbol was derived from. */
3148 s->udata.p = syms[i];
699733f6
AM
3149 s++;
3150 }
3151 }
3152 }
3153 else
90e3cdf2 3154 {
468392fb 3155 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
699733f6
AM
3156 bfd_byte *contents;
3157 size_t size;
468392fb
AM
3158 long plt_count = 0;
3159 bfd_vma glink_vma = 0, resolv_vma = 0;
3160 asection *dynamic, *glink = NULL, *relplt = NULL;
3161 arelent *p;
90e3cdf2 3162
699733f6
AM
3163 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3164 {
3165 if (contents)
c9727e01
AM
3166 {
3167 free_contents_and_exit:
3168 free (contents);
3169 }
7356fed5 3170 count = -1;
c9727e01 3171 goto done;
699733f6 3172 }
90e3cdf2 3173
699733f6
AM
3174 size = 0;
3175 for (i = secsymend; i < opdsymend; ++i)
3176 {
3177 bfd_vma ent;
90e3cdf2 3178
5ef11c02
AM
3179 /* Ignore bogus symbols. */
3180 if (syms[i]->value > opd->size - 8)
3181 continue;
3182
699733f6
AM
3183 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3184 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3185 {
3186 ++count;
3187 size += sizeof (asymbol);
3188 size += strlen (syms[i]->name) + 2;
3189 }
3190 }
90e3cdf2 3191
468392fb 3192 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM
3193 if (dyn_count != 0
3194 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM
3195 {
3196 bfd_byte *dynbuf, *extdyn, *extdynend;
3197 size_t extdynsize;
3198 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3199
3200 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3201 goto free_contents_and_exit;
3202
3203 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3204 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3205
3206 extdyn = dynbuf;
3207 extdynend = extdyn + dynamic->size;
3208 for (; extdyn < extdynend; extdyn += extdynsize)
3209 {
3210 Elf_Internal_Dyn dyn;
3211 (*swap_dyn_in) (abfd, extdyn, &dyn);
3212
3213 if (dyn.d_tag == DT_NULL)
3214 break;
3215
3216 if (dyn.d_tag == DT_PPC64_GLINK)
3217 {
3218 /* The first glink stub starts at offset 32; see comment in
3219 ppc64_elf_finish_dynamic_sections. */
3220 glink_vma = dyn.d_un.d_val + 32;
3221 /* The .glink section usually does not survive the final
3222 link; search for the section (usually .text) where the
3223 glink stubs now reside. */
3224 glink = bfd_sections_find_if (abfd, section_covers_vma,
3225 &glink_vma);
3226 break;
3227 }
3228 }
3229
3230 free (dynbuf);
3231 }
3232
3233 if (glink != NULL)
3234 {
3235 /* Determine __glink trampoline by reading the relative branch
3236 from the first glink stub. */
3237 bfd_byte buf[4];
3238 if (bfd_get_section_contents (abfd, glink, buf,
3239 glink_vma + 4 - glink->vma, 4))
3240 {
3241 unsigned int insn = bfd_get_32 (abfd, buf);
3242 insn ^= B_DOT;
3243 if ((insn & ~0x3fffffc) == 0)
3244 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3245 }
3246
3247 if (resolv_vma)
3248 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3249
066ee829
AM
3250 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3251 if (relplt != NULL)
3252 {
3253 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3254 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3255 goto free_contents_and_exit;
468392fb 3256
066ee829
AM
3257 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3258 size += plt_count * sizeof (asymbol);
468392fb 3259
066ee829
AM
3260 p = relplt->relocation;
3261 for (i = 0; i < plt_count; i++, p++)
e054468f
AM
3262 {
3263 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3264 if (p->addend != 0)
3265 size += sizeof ("+0x") - 1 + 16;
3266 }
066ee829 3267 }
468392fb
AM
3268 }
3269
699733f6
AM
3270 s = *ret = bfd_malloc (size);
3271 if (s == NULL)
7356fed5 3272 goto free_contents_and_exit;
90e3cdf2 3273
468392fb 3274 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3275
699733f6 3276 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3277 {
699733f6 3278 bfd_vma ent;
90e3cdf2 3279
5ef11c02
AM
3280 if (syms[i]->value > opd->size - 8)
3281 continue;
3282
699733f6
AM
3283 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3284 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3285 {
c9727e01 3286 long lo, hi;
699733f6 3287 size_t len;
c9727e01 3288 asection *sec = abfd->sections;
90e3cdf2 3289
699733f6
AM
3290 *s = *syms[i];
3291 lo = codesecsym;
3292 hi = codesecsymend;
3293 while (lo < hi)
3294 {
c9727e01 3295 long mid = (lo + hi) >> 1;
699733f6
AM
3296 if (syms[mid]->section->vma < ent)
3297 lo = mid + 1;
3298 else if (syms[mid]->section->vma > ent)
3299 hi = mid;
3300 else
c9727e01
AM
3301 {
3302 sec = syms[mid]->section;
3303 break;
3304 }
699733f6
AM
3305 }
3306
c9727e01 3307 if (lo >= hi && lo > codesecsym)
699733f6 3308 sec = syms[lo - 1]->section;
699733f6
AM
3309
3310 for (; sec != NULL; sec = sec->next)
3311 {
3312 if (sec->vma > ent)
3313 break;
3314 if ((sec->flags & SEC_ALLOC) == 0
3315 || (sec->flags & SEC_LOAD) == 0)
3316 break;
3317 if ((sec->flags & SEC_CODE) != 0)
3318 s->section = sec;
3319 }
6ba2a415 3320 s->flags |= BSF_SYNTHETIC;
699733f6
AM
3321 s->value = ent - s->section->vma;
3322 s->name = names;
3323 *names++ = '.';
3324 len = strlen (syms[i]->name);
3325 memcpy (names, syms[i]->name, len + 1);
3326 names += len + 1;
6f610d07
UW
3327 /* Have udata.p point back to the original symbol this
3328 synthetic symbol was derived from. */
3329 s->udata.p = syms[i];
699733f6 3330 s++;
90e3cdf2 3331 }
90e3cdf2 3332 }
699733f6 3333 free (contents);
468392fb
AM
3334
3335 if (glink != NULL && relplt != NULL)
3336 {
3337 if (resolv_vma)
3338 {
3339 /* Add a symbol for the main glink trampoline. */
86a4952b 3340 memset (s, 0, sizeof *s);
468392fb 3341 s->the_bfd = abfd;
6ba2a415 3342 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3343 s->section = glink;
3344 s->value = resolv_vma - glink->vma;
3345 s->name = names;
3346 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3347 names += sizeof ("__glink_PLTresolve");
3348 s++;
3349 count++;
3350 }
3351
3352 /* FIXME: It would be very much nicer to put sym@plt on the
3353 stub rather than on the glink branch table entry. The
3354 objdump disassembler would then use a sensible symbol
3355 name on plt calls. The difficulty in doing so is
3356 a) finding the stubs, and,
3357 b) matching stubs against plt entries, and,
3358 c) there can be multiple stubs for a given plt entry.
3359
3360 Solving (a) could be done by code scanning, but older
3361 ppc64 binaries used different stubs to current code.
3362 (b) is the tricky one since you need to known the toc
3363 pointer for at least one function that uses a pic stub to
3364 be able to calculate the plt address referenced.
3365 (c) means gdb would need to set multiple breakpoints (or
3366 find the glink branch itself) when setting breakpoints
3367 for pending shared library loads. */
3368 p = relplt->relocation;
3369 for (i = 0; i < plt_count; i++, p++)
3370 {
3371 size_t len;
3372
3373 *s = **p->sym_ptr_ptr;
3374 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3375 we are defining a symbol, ensure one of them is set. */
3376 if ((s->flags & BSF_LOCAL) == 0)
3377 s->flags |= BSF_GLOBAL;
6ba2a415 3378 s->flags |= BSF_SYNTHETIC;
468392fb
AM
3379 s->section = glink;
3380 s->value = glink_vma - glink->vma;
3381 s->name = names;
3382 s->udata.p = NULL;
3383 len = strlen ((*p->sym_ptr_ptr)->name);
3384 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3385 names += len;
e054468f
AM
3386 if (p->addend != 0)
3387 {
3388 memcpy (names, "+0x", sizeof ("+0x") - 1);
3389 names += sizeof ("+0x") - 1;
3390 bfd_sprintf_vma (abfd, names, p->addend);
3391 names += strlen (names);
3392 }
468392fb
AM
3393 memcpy (names, "@plt", sizeof ("@plt"));
3394 names += sizeof ("@plt");
3395 s++;
3396 glink_vma += 8;
3397 if (i >= 0x8000)
3398 glink_vma += 4;
3399 }
3400 count += plt_count;
3401 }
90e3cdf2
JJ
3402 }
3403
c9727e01 3404 done:
a7535cf3 3405 free (syms);
90e3cdf2
JJ
3406 return count;
3407}
5bd4f169 3408\f
65f38f15
AM
3409/* The following functions are specific to the ELF linker, while
3410 functions above are used generally. Those named ppc64_elf_* are
3411 called by the main ELF linker code. They appear in this file more
3412 or less in the order in which they are called. eg.
3413 ppc64_elf_check_relocs is called early in the link process,
3414 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM
3415 called.
3416
3417 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3418 functions have both a function code symbol and a function descriptor
3419 symbol. A call to foo in a relocatable object file looks like:
3420
3421 . .text
3422 . x:
3423 . bl .foo
3424 . nop
3425
3426 The function definition in another object file might be:
3427
3428 . .section .opd
3429 . foo: .quad .foo
3430 . .quad .TOC.@tocbase
3431 . .quad 0
3432 .
3433 . .text
3434 . .foo: blr
3435
3436 When the linker resolves the call during a static link, the branch
3437 unsurprisingly just goes to .foo and the .opd information is unused.
3438 If the function definition is in a shared library, things are a little
3439 different: The call goes via a plt call stub, the opd information gets
3440 copied to the plt, and the linker patches the nop.
3441
3442 . x:
3443 . bl .foo_stub
3444 . ld 2,40(1)
3445 .
3446 .
3447 . .foo_stub:
3448 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3449 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM
3450 . std 2,40(1) # this is the general idea
3451 . ld 11,0(12)
3452 . ld 2,8(12)
3453 . mtctr 11
3454 . ld 11,16(12)
3455 . bctr
3456 .
3457 . .section .plt
3458 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3459
3460 The "reloc ()" notation is supposed to indicate that the linker emits
3461 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3462 copying.
3463
3464 What are the difficulties here? Well, firstly, the relocations
3465 examined by the linker in check_relocs are against the function code
3466 sym .foo, while the dynamic relocation in the plt is emitted against
3467 the function descriptor symbol, foo. Somewhere along the line, we need
3468 to carefully copy dynamic link information from one symbol to the other.
3469 Secondly, the generic part of the elf linker will make .foo a dynamic
3470 symbol as is normal for most other backends. We need foo dynamic
3471 instead, at least for an application final link. However, when
3472 creating a shared library containing foo, we need to have both symbols
3473 dynamic so that references to .foo are satisfied during the early
3474 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM
3475 definition from some other object, eg. a static library.
3476
3477 Update: As of August 2004, we support a new convention. Function
3478 calls may use the function descriptor symbol, ie. "bl foo". This
3479 behaves exactly as "bl .foo". */
65f38f15
AM
3480
3481/* The linker needs to keep track of the number of relocs that it
3482 decides to copy as dynamic relocs in check_relocs for each symbol.
3483 This is so that it can later discard them if they are found to be
3484 unnecessary. We store the information in a field extending the
3485 regular ELF linker hash table. */
3486
3487struct ppc_dyn_relocs
3488{
3489 struct ppc_dyn_relocs *next;
3490
3491 /* The input section of the reloc. */
3492 asection *sec;
3493
3494 /* Total number of relocs copied for the input section. */
3495 bfd_size_type count;
3496
3497 /* Number of pc-relative relocs copied for the input section. */
3498 bfd_size_type pc_count;
3499};
3500
1d483afe 3501/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM
3502 selects those that must be copied when linking a shared library,
3503 even when the symbol is local. */
65f38f15 3504
1d483afe
AM
3505static int
3506must_be_dyn_reloc (struct bfd_link_info *info,
3507 enum elf_ppc64_reloc_type r_type)
3508{
3509 switch (r_type)
3510 {
3511 default:
3512 return 1;
3513
3514 case R_PPC64_REL32:
3515 case R_PPC64_REL64:
3516 case R_PPC64_REL30:
3517 return 0;
3518
3519 case R_PPC64_TPREL16:
3520 case R_PPC64_TPREL16_LO:
3521 case R_PPC64_TPREL16_HI:
3522 case R_PPC64_TPREL16_HA:
3523 case R_PPC64_TPREL16_DS:
3524 case R_PPC64_TPREL16_LO_DS:
3525 case R_PPC64_TPREL16_HIGHER:
3526 case R_PPC64_TPREL16_HIGHERA:
3527 case R_PPC64_TPREL16_HIGHEST:
3528 case R_PPC64_TPREL16_HIGHESTA:
3529 case R_PPC64_TPREL64:
3530 return !info->executable;
3531 }
3532}
65f38f15 3533
f4656909
AM
3534/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3535 copying dynamic variables from a shared lib into an app's dynbss
3536 section, and instead use a dynamic relocation to point into the
5d35169e
AM
3537 shared lib. With code that gcc generates, it's vital that this be
3538 enabled; In the PowerPC64 ABI, the address of a function is actually
3539 the address of a function descriptor, which resides in the .opd
3540 section. gcc uses the descriptor directly rather than going via the
3541 GOT as some other ABI's do, which means that initialized function
3542 pointers must reference the descriptor. Thus, a function pointer
3543 initialized to the address of a function in a shared library will
3544 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3545 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM
3546 presents a problem as a plt entry for that function is also
3547 initialized from the function descriptor symbol and the copy reloc
3548 may not be initialized first. */
a23b6845 3549#define ELIMINATE_COPY_RELOCS 1
f4656909 3550
721956f4
AM
3551/* Section name for stubs is the associated section name plus this
3552 string. */
3553#define STUB_SUFFIX ".stub"
3554
3555/* Linker stubs.
3556 ppc_stub_long_branch:
3557 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3558 destination, but a 24 bit branch in a stub section will reach.
3559 . b dest
3560
3561 ppc_stub_plt_branch:
3562 Similar to the above, but a 24 bit branch in the stub section won't
3563 reach its destination.
87e226ce
AM
3564 . addis %r12,%r2,xxx@toc@ha
3565 . ld %r11,xxx@toc@l(%r12)
721956f4
AM
3566 . mtctr %r11
3567 . bctr
3568
3569 ppc_stub_plt_call:
2c66dc6c
AM
3570 Used to call a function in a shared library. If it so happens that
3571 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3572 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3573 . addis %r12,%r2,xxx@toc@ha
721956f4 3574 . std %r2,40(%r1)
87e226ce 3575 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3576 . mtctr %r11
ac2df442 3577 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3578 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3579 . bctr
ad8e1ba5
AM
3580
3581 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3582 code to adjust the value and save r2 to support multiple toc sections.
3583 A ppc_stub_long_branch with an r2 offset looks like:
3584 . std %r2,40(%r1)
3585 . addis %r2,%r2,off@ha
3586 . addi %r2,%r2,off@l
3587 . b dest
3588
3589 A ppc_stub_plt_branch with an r2 offset looks like:
3590 . std %r2,40(%r1)
3591 . addis %r12,%r2,xxx@toc@ha
3592 . ld %r11,xxx@toc@l(%r12)
3593 . addis %r2,%r2,off@ha
3594 . addi %r2,%r2,off@l
3595 . mtctr %r11
3596 . bctr
ac2df442
AM
3597
3598 In cases where the "addis" instruction would add zero, the "addis" is
3599 omitted and following instructions modified slightly in some cases.
721956f4
AM
3600*/
3601
3602enum ppc_stub_type {
3603 ppc_stub_none,
3604 ppc_stub_long_branch,
ad8e1ba5 3605 ppc_stub_long_branch_r2off,
721956f4 3606 ppc_stub_plt_branch,
ad8e1ba5 3607 ppc_stub_plt_branch_r2off,
721956f4
AM
3608 ppc_stub_plt_call
3609};
3610
3611struct ppc_stub_hash_entry {
3612
3613 /* Base hash table entry structure. */
3614 struct bfd_hash_entry root;
3615
ad8e1ba5
AM
3616 enum ppc_stub_type stub_type;
3617
721956f4
AM
3618 /* The stub section. */
3619 asection *stub_sec;
3620
3621 /* Offset within stub_sec of the beginning of this stub. */
3622 bfd_vma stub_offset;
3623
3624 /* Given the symbol's value and its section we can determine its final
3625 value when building the stubs (so the stub knows where to jump. */
3626 bfd_vma target_value;
3627 asection *target_section;
3628
721956f4
AM
3629 /* The symbol table entry, if any, that this was derived from. */
3630 struct ppc_link_hash_entry *h;
e054468f 3631 struct plt_entry *plt_ent;
721956f4 3632
411e1bfb
AM
3633 /* And the reloc addend that this was derived from. */
3634 bfd_vma addend;
3635
721956f4
AM
3636 /* Where this stub is being called from, or, in the case of combined
3637 stub sections, the first input section in the group. */
3638 asection *id_sec;
3639};
3640
3641struct ppc_branch_hash_entry {
3642
3643 /* Base hash table entry structure. */
3644 struct bfd_hash_entry root;
3645
c456f082 3646 /* Offset within branch lookup table. */
721956f4
AM
3647 unsigned int offset;
3648
3649 /* Generation marker. */
3650 unsigned int iter;
3651};
65f38f15
AM
3652
3653struct ppc_link_hash_entry
3654{
3655 struct elf_link_hash_entry elf;
3656
b3fac117
AM
3657 union {
3658 /* A pointer to the most recently used stub hash entry against this
3659 symbol. */
3660 struct ppc_stub_hash_entry *stub_cache;
3661
3662 /* A pointer to the next symbol starting with a '.' */
3663 struct ppc_link_hash_entry *next_dot_sym;
3664 } u;
721956f4 3665
65f38f15
AM
3666 /* Track dynamic relocs copied for this symbol. */
3667 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3668
721956f4 3669 /* Link between function code and descriptor symbols. */
34814b9f 3670 struct ppc_link_hash_entry *oh;
721956f4 3671
e86ce104
AM
3672 /* Flag function code and descriptor symbols. */
3673 unsigned int is_func:1;
3674 unsigned int is_func_descriptor:1;
908b32fc 3675 unsigned int fake:1;
411e1bfb 3676
c5614fa4
AM
3677 /* Whether global opd/toc sym has been adjusted or not.
3678 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3679 should be set for all globals defined in any opd/toc section. */
754021d0
AM
3680 unsigned int adjust_done:1;
3681
99877b66
AM
3682 /* Set if we twiddled this symbol to weak at some stage. */
3683 unsigned int was_undefined:1;
3684
411e1bfb 3685 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM
3686 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3687 corresponding relocs are encountered during check_relocs.
3688 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3689 indicate the corresponding GOT entry type is not needed.
3690 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3691 a TPREL one. We use a separate flag rather than setting TPREL
3692 just for convenience in distinguishing the two cases. */
3693#define TLS_GD 1 /* GD reloc. */
3694#define TLS_LD 2 /* LD reloc. */
3695#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3696#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3697#define TLS_TLS 16 /* Any TLS reloc. */
3698#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3699#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3700#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3701 unsigned char tls_mask;
65f38f15
AM
3702};
3703
3704/* ppc64 ELF linker hash table. */
3705
3706struct ppc_link_hash_table
3707{
3708 struct elf_link_hash_table elf;
3709
721956f4
AM
3710 /* The stub hash table. */
3711 struct bfd_hash_table stub_hash_table;
3712
3713 /* Another hash table for plt_branch stubs. */
3714 struct bfd_hash_table branch_hash_table;
3715
3716 /* Linker stub bfd. */
3717 bfd *stub_bfd;
3718
3719 /* Linker call-backs. */
4ce794b7
AM
3720 asection * (*add_stub_section) (const char *, asection *);
3721 void (*layout_sections_again) (void);
721956f4
AM
3722
3723 /* Array to keep track of which stub sections have been created, and
3724 information on stub grouping. */
3725 struct map_stub {
3726 /* This is the section to which stubs in the group will be attached. */
3727 asection *link_sec;
3728 /* The stub section. */
3729 asection *stub_sec;
ad8e1ba5
AM
3730 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3731 bfd_vma toc_off;
721956f4
AM
3732 } *stub_group;
3733
ad8e1ba5
AM
3734 /* Temp used when calculating TOC pointers. */
3735 bfd_vma toc_curr;
bf102f86
AM
3736 bfd *toc_bfd;
3737 asection *toc_first_sec;
ad8e1ba5 3738
8f3bab57
AM
3739 /* Highest input section id. */
3740 int top_id;
3741
734b6cf9
AM
3742 /* Highest output section index. */
3743 int top_index;
3744
b3fac117
AM
3745 /* Used when adding symbols. */
3746 struct ppc_link_hash_entry *dot_syms;
3747
734b6cf9
AM
3748 /* List of input sections for each output section. */
3749 asection **input_list;
721956f4 3750
65f38f15 3751 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3752 asection *got;
4ce794b7
AM
3753 asection *plt;
3754 asection *relplt;
e054468f
AM
3755 asection *iplt;
3756 asection *reliplt;
4ce794b7
AM
3757 asection *dynbss;
3758 asection *relbss;
3759 asection *glink;
82bd7b59 3760 asection *sfpr;
4ce794b7
AM
3761 asection *brlt;
3762 asection *relbrlt;
ec338859 3763
8387904d
AM
3764 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3765 struct ppc_link_hash_entry *tls_get_addr;
3766 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3767
927be08e
AM
3768 /* The size of reliplt used by got entry relocs. */
3769 bfd_size_type got_reli_size;
3770
9b5ecbd0
AM
3771 /* Statistics. */
3772 unsigned long stub_count[ppc_stub_plt_call];
3773
ee75fd95
AM
3774 /* Number of stubs against global syms. */
3775 unsigned long stub_globals;
3776
ad8e1ba5 3777 /* Set if we should emit symbols for stubs. */
99877b66 3778 unsigned int emit_stub_syms:1;
ad8e1ba5 3779
a7f2871e
AM
3780 /* Set if __tls_get_addr optimization should not be done. */
3781 unsigned int no_tls_get_addr_opt:1;
3782
4c52953f 3783 /* Support for multiple toc sections. */
33c0ec9d 3784 unsigned int do_multi_toc:1;
4c52953f 3785 unsigned int multi_toc_needed:1;
927be08e 3786 unsigned int second_toc_pass:1;
4c52953f 3787
5d1634d7 3788 /* Set on error. */
99877b66 3789 unsigned int stub_error:1;
721956f4 3790
7d9616d7 3791 /* Temp used by ppc64_elf_process_dot_syms. */
99877b66 3792 unsigned int twiddled_syms:1;
721956f4
AM
3793
3794 /* Incremented every time we size stubs. */
3795 unsigned int stub_iteration;
5d1634d7 3796
87d72d41
AM
3797 /* Small local sym cache. */
3798 struct sym_cache sym_cache;
65f38f15
AM
3799};
3800
4c52953f
AM
3801/* Rename some of the generic section flags to better document how they
3802 are used here. */
b0dddeec
AM
3803
3804/* Nonzero if this section has TLS related relocations. */
3805#define has_tls_reloc sec_flg0
3806
3807/* Nonzero if this section has a call to __tls_get_addr. */
3808#define has_tls_get_addr_call sec_flg1
3809
3810/* Nonzero if this section has any toc or got relocs. */
3811#define has_toc_reloc sec_flg2
3812
33c0ec9d
AM
3813/* Nonzero if this section has small toc/got relocs, ie. that expect
3814 the reloc to be in the range -32768 to 32767. */
3815#define has_small_toc_reloc sec_flg3
3816
b0dddeec
AM
3817/* Nonzero if this section has a call to another section that uses
3818 the toc or got. */
3819#define makes_toc_func_call sec_flg4
3820
3821/* Recursion protection when determining above flag. */
3822#define call_check_in_progress sec_flg5
4c52953f 3823
65f38f15
AM
3824/* Get the ppc64 ELF linker hash table from a link_info structure. */
3825
3826#define ppc_hash_table(p) \
4dfe6ac6
NC
3827 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3828 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 3829
721956f4
AM
3830#define ppc_stub_hash_lookup(table, string, create, copy) \
3831 ((struct ppc_stub_hash_entry *) \
3832 bfd_hash_lookup ((table), (string), (create), (copy)))
3833
3834#define ppc_branch_hash_lookup(table, string, create, copy) \
3835 ((struct ppc_branch_hash_entry *) \
3836 bfd_hash_lookup ((table), (string), (create), (copy)))
3837
3838/* Create an entry in the stub hash table. */
3839
3840static struct bfd_hash_entry *
4ce794b7
AM
3841stub_hash_newfunc (struct bfd_hash_entry *entry,
3842 struct bfd_hash_table *table,
3843 const char *string)
721956f4
AM
3844{
3845 /* Allocate the structure if it has not already been allocated by a
3846 subclass. */
3847 if (entry == NULL)
3848 {
3849 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3850 if (entry == NULL)
3851 return entry;
3852 }
3853
3854 /* Call the allocation method of the superclass. */
3855 entry = bfd_hash_newfunc (entry, table, string);
3856 if (entry != NULL)
3857 {
3858 struct ppc_stub_hash_entry *eh;
3859
3860 /* Initialize the local fields. */
3861 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3862 eh->stub_type = ppc_stub_none;
721956f4
AM
3863 eh->stub_sec = NULL;
3864 eh->stub_offset = 0;
3865 eh->target_value = 0;
3866 eh->target_section = NULL;
721956f4
AM
3867 eh->h = NULL;
3868 eh->id_sec = NULL;
3869 }
3870
3871 return entry;
3872}
3873
3874/* Create an entry in the branch hash table. */
3875
3876static struct bfd_hash_entry *
4ce794b7
AM
3877branch_hash_newfunc (struct bfd_hash_entry *entry,
3878 struct bfd_hash_table *table,
3879 const char *string)
721956f4
AM
3880{
3881 /* Allocate the structure if it has not already been allocated by a
3882 subclass. */
3883 if (entry == NULL)
3884 {
3885 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3886 if (entry == NULL)
3887 return entry;
3888 }
3889
3890 /* Call the allocation method of the superclass. */
3891 entry = bfd_hash_newfunc (entry, table, string);
3892 if (entry != NULL)
3893 {
3894 struct ppc_branch_hash_entry *eh;
3895
3896 /* Initialize the local fields. */
3897 eh = (struct ppc_branch_hash_entry *) entry;
3898 eh->offset = 0;
3899 eh->iter = 0;
3900 }
3901
3902 return entry;
3903}
3904
65f38f15
AM
3905/* Create an entry in a ppc64 ELF linker hash table. */
3906
3907static struct bfd_hash_entry *
4ce794b7
AM
3908link_hash_newfunc (struct bfd_hash_entry *entry,
3909 struct bfd_hash_table *table,
3910 const char *string)
65f38f15
AM
3911{
3912 /* Allocate the structure if it has not already been allocated by a
3913 subclass. */
3914 if (entry == NULL)
3915 {
3916 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3917 if (entry == NULL)
3918 return entry;
3919 }
3920
3921 /* Call the allocation method of the superclass. */
3922 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3923 if (entry != NULL)
3924 {
3925 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3926
b3fac117 3927 memset (&eh->u.stub_cache, 0,
908b32fc 3928 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM
3929 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3930
3931 /* When making function calls, old ABI code references function entry
3932 points (dot symbols), while new ABI code references the function
3933 descriptor symbol. We need to make any combination of reference and
3934 definition work together, without breaking archive linking.
3935
3936 For a defined function "foo" and an undefined call to "bar":
3937 An old object defines "foo" and ".foo", references ".bar" (possibly
3938 "bar" too).
3939 A new object defines "foo" and references "bar".
3940
3941 A new object thus has no problem with its undefined symbols being
3942 satisfied by definitions in an old object. On the other hand, the
3943 old object won't have ".bar" satisfied by a new object.
3944
3945 Keep a list of newly added dot-symbols. */
3946
3947 if (string[0] == '.')
3948 {
3949 struct ppc_link_hash_table *htab;
3950
3951 htab = (struct ppc_link_hash_table *) table;
3952 eh->u.next_dot_sym = htab->dot_syms;
3953 htab->dot_syms = eh;
3954 }
65f38f15
AM
3955 }
3956
3957 return entry;
3958}
3959
3960/* Create a ppc64 ELF linker hash table. */
3961
3962static struct bfd_link_hash_table *
4ce794b7 3963ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM
3964{
3965 struct ppc_link_hash_table *htab;
3966 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3967
4ce794b7 3968 htab = bfd_zmalloc (amt);
65f38f15
AM
3969 if (htab == NULL)
3970 return NULL;
3971
66eb6687 3972 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC
3973 sizeof (struct ppc_link_hash_entry),
3974 PPC64_ELF_DATA))
65f38f15 3975 {
e2d34d7d 3976 free (htab);
65f38f15
AM
3977 return NULL;
3978 }
3979
721956f4 3980 /* Init the stub hash table too. */
66eb6687
AM
3981 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3982 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM
3983 return NULL;
3984
3985 /* And the branch hash table. */
66eb6687
AM
3986 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3987 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM
3988 return NULL;
3989
3254fd24
AM
3990 /* Initializing two fields of the union is just cosmetic. We really
3991 only care about glist, but when compiled on a 32-bit host the
3992 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3993 debugger inspection of these fields look nicer. */
a6aa5195
AM
3994 htab->elf.init_got_refcount.refcount = 0;
3995 htab->elf.init_got_refcount.glist = NULL;
3996 htab->elf.init_plt_refcount.refcount = 0;
3997 htab->elf.init_plt_refcount.glist = NULL;
3998 htab->elf.init_got_offset.offset = 0;
3999 htab->elf.init_got_offset.glist = NULL;
4000 htab->elf.init_plt_offset.offset = 0;
4001 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4002
65f38f15
AM
4003 return &htab->elf.root;
4004}
4005
721956f4
AM
4006/* Free the derived linker hash table. */
4007
4008static void
4ce794b7 4009ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM
4010{
4011 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
4012
4013 bfd_hash_table_free (&ret->stub_hash_table);
4014 bfd_hash_table_free (&ret->branch_hash_table);
4015 _bfd_generic_link_hash_table_free (hash);
4016}
4017
e717da7e
AM
4018/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4019
4020void
4021ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4022{
4023 struct ppc_link_hash_table *htab;
4024
4025 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4026
4027/* Always hook our dynamic sections into the first bfd, which is the
4028 linker created stub bfd. This ensures that the GOT header is at
4029 the start of the output TOC section. */
4030 htab = ppc_hash_table (info);
4dfe6ac6
NC
4031 if (htab == NULL)
4032 return;
e717da7e
AM
4033 htab->stub_bfd = abfd;
4034 htab->elf.dynobj = abfd;
4035}
4036
721956f4
AM
4037/* Build a name for an entry in the stub hash table. */
4038
4039static char *
4ce794b7
AM
4040ppc_stub_name (const asection *input_section,
4041 const asection *sym_sec,
4042 const struct ppc_link_hash_entry *h,
4043 const Elf_Internal_Rela *rel)
721956f4
AM
4044{
4045 char *stub_name;
4046 bfd_size_type len;
4047
4048 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4049 offsets from a sym as a branch target? In fact, we could
4050 probably assume the addend is always zero. */
4051 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4052
4053 if (h)
4054 {
4055 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4056 stub_name = bfd_malloc (len);
46de2a7c
AM
4057 if (stub_name == NULL)
4058 return stub_name;
4059
4060 sprintf (stub_name, "%08x.%s+%x",
4061 input_section->id & 0xffffffff,
4062 h->elf.root.root.string,
4063 (int) rel->r_addend & 0xffffffff);
721956f4
AM
4064 }
4065 else
4066 {
ad8e1ba5 4067 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4068 stub_name = bfd_malloc (len);
46de2a7c
AM
4069 if (stub_name == NULL)
4070 return stub_name;
4071
4072 sprintf (stub_name, "%08x.%x:%x+%x",
4073 input_section->id & 0xffffffff,
4074 sym_sec->id & 0xffffffff,
4075 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4076 (int) rel->r_addend & 0xffffffff);
721956f4 4077 }
ee75fd95
AM
4078 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4079 stub_name[len - 2] = 0;
721956f4
AM
4080 return stub_name;
4081}
4082
4083/* Look up an entry in the stub hash. Stub entries are cached because
4084 creating the stub name takes a bit of time. */
4085
4086static struct ppc_stub_hash_entry *
4ce794b7
AM
4087ppc_get_stub_entry (const asection *input_section,
4088 const asection *sym_sec,
039b3fef 4089 struct ppc_link_hash_entry *h,
4ce794b7
AM
4090 const Elf_Internal_Rela *rel,
4091 struct ppc_link_hash_table *htab)
721956f4
AM
4092{
4093 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM
4094 const asection *id_sec;
4095
4096 /* If this input section is part of a group of sections sharing one
4097 stub section, then use the id of the first section in the group.
4098 Stub names need to include a section id, as there may well be
4099 more than one stub used to reach say, printf, and we need to
4100 distinguish between them. */
4101 id_sec = htab->stub_group[input_section->id].link_sec;
4102
b3fac117
AM
4103 if (h != NULL && h->u.stub_cache != NULL
4104 && h->u.stub_cache->h == h
4105 && h->u.stub_cache->id_sec == id_sec)
721956f4 4106 {
b3fac117 4107 stub_entry = h->u.stub_cache;
721956f4
AM
4108 }
4109 else
4110 {
4111 char *stub_name;
4112
4113 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4114 if (stub_name == NULL)
4115 return NULL;
4116
4117 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4118 stub_name, FALSE, FALSE);
721956f4 4119 if (h != NULL)
b3fac117 4120 h->u.stub_cache = stub_entry;
721956f4
AM
4121
4122 free (stub_name);
4123 }
4124
4125 return stub_entry;
4126}
4127
4128/* Add a new stub entry to the stub hash. Not all fields of the new
4129 stub entry are initialised. */
4130
4131static struct ppc_stub_hash_entry *
4ce794b7
AM
4132ppc_add_stub (const char *stub_name,
4133 asection *section,
4134 struct ppc_link_hash_table *htab)
721956f4
AM
4135{
4136 asection *link_sec;
4137 asection *stub_sec;
4138 struct ppc_stub_hash_entry *stub_entry;
4139
4140 link_sec = htab->stub_group[section->id].link_sec;
4141 stub_sec = htab->stub_group[section->id].stub_sec;
4142 if (stub_sec == NULL)
4143 {
4144 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4145 if (stub_sec == NULL)
4146 {
d4c88bbb 4147 size_t namelen;
721956f4
AM
4148 bfd_size_type len;
4149 char *s_name;
4150
d4c88bbb
AM
4151 namelen = strlen (link_sec->name);
4152 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM
4153 s_name = bfd_alloc (htab->stub_bfd, len);
4154 if (s_name == NULL)
4155 return NULL;
4156
d4c88bbb
AM
4157 memcpy (s_name, link_sec->name, namelen);
4158 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM
4159 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4160 if (stub_sec == NULL)
4161 return NULL;
4162 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4163 }
4164 htab->stub_group[section->id].stub_sec = stub_sec;
4165 }
4166
4167 /* Enter this entry into the linker stub hash table. */
4168 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4169 TRUE, FALSE);
721956f4
AM
4170 if (stub_entry == NULL)
4171 {
d003868e
AM
4172 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4173 section->owner, stub_name);
721956f4
AM
4174 return NULL;
4175 }
4176
4177 stub_entry->stub_sec = stub_sec;
4178 stub_entry->stub_offset = 0;
4179 stub_entry->id_sec = link_sec;
4180 return stub_entry;
4181}
4182
82bd7b59
AM
4183/* Create sections for linker generated code. */
4184
b34976b6 4185static bfd_boolean
4ce794b7 4186create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM
4187{
4188 struct ppc_link_hash_table *htab;
4189 flagword flags;
4190
4191 htab = ppc_hash_table (info);
4dfe6ac6
NC
4192 if (htab == NULL)
4193 return FALSE;
82bd7b59
AM
4194
4195 /* Create .sfpr for code to save and restore fp regs. */
4196 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4197 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L
4198 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4199 flags);
82bd7b59 4200 if (htab->sfpr == NULL
82bd7b59 4201 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 4202 return FALSE;
82bd7b59 4203
721956f4 4204 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L
4205 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4206 flags);
4ce794b7 4207 if (htab->glink == NULL
ee4bf8d2 4208 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 4209 return FALSE;
82bd7b59 4210
e054468f
AM
4211 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4212 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4213 if (htab->iplt == NULL
4214 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4215 return FALSE;
4216
4217 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4218 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4219 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4220 ".rela.iplt",
4221 flags);
4222 if (htab->reliplt == NULL
4223 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4224 return FALSE;
4225
c456f082 4226 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM
4227 flags = (SEC_ALLOC | SEC_LOAD
4228 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4229 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4230 flags);
4ce794b7 4231 if (htab->brlt == NULL
4ce794b7 4232 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 4233 return FALSE;
721956f4 4234
e4e0193e 4235 if (!info->shared)
c456f082
AM
4236 return TRUE;
4237
e4e0193e
AM
4238 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4239 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4240 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4241 ".rela.branch_lt",
4242 flags);
e054468f 4243 if (htab->relbrlt == NULL
c456f082
AM
4244 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4245 return FALSE;
4246
b34976b6 4247 return TRUE;
82bd7b59
AM
4248}
4249
e717da7e
AM
4250/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4251 not already done. */
65f38f15 4252
b34976b6 4253static bfd_boolean
e717da7e 4254create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4255{
e717da7e
AM
4256 asection *got, *relgot;
4257 flagword flags;
4258 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4259
0c8d6e5c 4260 if (!is_ppc64_elf (abfd))
0ffa91dd 4261 return FALSE;
4dfe6ac6
NC
4262 if (htab == NULL)
4263 return FALSE;
0ffa91dd 4264
4ce794b7 4265 if (!htab->got)
e717da7e
AM
4266 {
4267 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4268 return FALSE;
4269
4270 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4271 if (!htab->got)
4272 abort ();
4273 }
4274
4275 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4276 | SEC_LINKER_CREATED);
4277
c456f082 4278 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4279 if (!got
e717da7e
AM
4280 || !bfd_set_section_alignment (abfd, got, 3))
4281 return FALSE;
65f38f15 4282
c456f082
AM
4283 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4284 flags | SEC_READONLY);
e717da7e 4285 if (!relgot
e717da7e 4286 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4287 return FALSE;
e717da7e
AM
4288
4289 ppc64_elf_tdata (abfd)->got = got;
4290 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4291 return TRUE;
65f38f15 4292}
5bd4f169 4293
82bd7b59 4294/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4295
b34976b6 4296static bfd_boolean
4ce794b7 4297ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4298{
65f38f15 4299 struct ppc_link_hash_table *htab;
5bd4f169 4300
65f38f15 4301 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4302 return FALSE;
65f38f15 4303
e717da7e 4304 htab = ppc_hash_table (info);
4dfe6ac6
NC
4305 if (htab == NULL)
4306 return FALSE;
4307
e717da7e
AM
4308 if (!htab->got)
4309 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM
4310 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4311 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4312 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 4313 if (!info->shared)
4ce794b7 4314 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 4315
e717da7e 4316 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 4317 || (!info->shared && !htab->relbss))
65f38f15
AM
4318 abort ();
4319
b34976b6 4320 return TRUE;
5bd4f169
AM
4321}
4322
b31867b6
AM
4323/* Follow indirect and warning symbol links. */
4324
4325static inline struct bfd_link_hash_entry *
4326follow_link (struct bfd_link_hash_entry *h)
4327{
4328 while (h->type == bfd_link_hash_indirect
4329 || h->type == bfd_link_hash_warning)
4330 h = h->u.i.link;
4331 return h;
4332}
4333
4334static inline struct elf_link_hash_entry *
4335elf_follow_link (struct elf_link_hash_entry *h)
4336{
4337 return (struct elf_link_hash_entry *) follow_link (&h->root);
4338}
4339
4340static inline struct ppc_link_hash_entry *
4341ppc_follow_link (struct ppc_link_hash_entry *h)
4342{
4343 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4344}
4345
40d16e0b
AM
4346/* Merge PLT info on FROM with that on TO. */
4347
4348static void
4349move_plt_plist (struct ppc_link_hash_entry *from,
4350 struct ppc_link_hash_entry *to)
4351{
4352 if (from->elf.plt.plist != NULL)
4353 {
4354 if (to->elf.plt.plist != NULL)
4355 {
4356 struct plt_entry **entp;
4357 struct plt_entry *ent;
4358
4359 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4360 {
4361 struct plt_entry *dent;
4362
4363 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4364 if (dent->addend == ent->addend)
4365 {
4366 dent->plt.refcount += ent->plt.refcount;
4367 *entp = ent->next;
4368 break;
4369 }
4370 if (dent == NULL)
4371 entp = &ent->next;
4372 }
4373 *entp = to->elf.plt.plist;
4374 }
4375
4376 to->elf.plt.plist = from->elf.plt.plist;
4377 from->elf.plt.plist = NULL;
4378 }
4379}
4380
65f38f15
AM
4381/* Copy the extra info we tack onto an elf_link_hash_entry. */
4382
4383static void
fcfa13d2
AM
4384ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4385 struct elf_link_hash_entry *dir,
4386 struct elf_link_hash_entry *ind)
65f38f15
AM
4387{
4388 struct ppc_link_hash_entry *edir, *eind;
4389
4390 edir = (struct ppc_link_hash_entry *) dir;
4391 eind = (struct ppc_link_hash_entry *) ind;
4392
411e1bfb 4393 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4394 if (eind->dyn_relocs != NULL)
65f38f15 4395 {
bbd7ec4a
AM
4396 if (edir->dyn_relocs != NULL)
4397 {
4398 struct ppc_dyn_relocs **pp;
4399 struct ppc_dyn_relocs *p;
4400
fcfa13d2 4401 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
4402 list. Merge any entries against the same section. */
4403 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4404 {
4405 struct ppc_dyn_relocs *q;
4406
4407 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4408 if (q->sec == p->sec)
4409 {
4410 q->pc_count += p->pc_count;
4411 q->count += p->count;
4412 *pp = p->next;
4413 break;
4414 }
4415 if (q == NULL)
4416 pp = &p->next;
4417 }
4418 *pp = edir->dyn_relocs;
4419 }
4420
65f38f15
AM
4421 edir->dyn_relocs = eind->dyn_relocs;
4422 eind->dyn_relocs = NULL;
4423 }
65f38f15 4424
6349e628
AM
4425 edir->is_func |= eind->is_func;
4426 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4427 edir->tls_mask |= eind->tls_mask;
b31867b6
AM
4428 if (eind->oh != NULL)
4429 edir->oh = ppc_follow_link (eind->oh);
6349e628 4430
81848ca0 4431 /* If called to transfer flags for a weakdef during processing
f5385ebf 4432 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4433 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM
4434 if (!(ELIMINATE_COPY_RELOCS
4435 && eind->elf.root.type != bfd_link_hash_indirect
4436 && edir->elf.dynamic_adjusted))
4437 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4438
f5385ebf
AM
4439 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4440 edir->elf.ref_regular |= eind->elf.ref_regular;
4441 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4442 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM
4443
4444 /* If we were called to copy over info for a weak sym, that's all. */
4445 if (eind->elf.root.type != bfd_link_hash_indirect)
4446 return;
4447
81848ca0
AM
4448 /* Copy over got entries that we may have already seen to the
4449 symbol which just became indirect. */
411e1bfb
AM
4450 if (eind->elf.got.glist != NULL)
4451 {
4452 if (edir->elf.got.glist != NULL)
4453 {
4454 struct got_entry **entp;
4455 struct got_entry *ent;
4456
4457 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4458 {
4459 struct got_entry *dent;
4460
4461 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4462 if (dent->addend == ent->addend
e717da7e 4463 && dent->owner == ent->owner
411e1bfb
AM
4464 && dent->tls_type == ent->tls_type)
4465 {
4466 dent->got.refcount += ent->got.refcount;
4467 *entp = ent->next;
4468 break;
4469 }
4470 if (dent == NULL)
4471 entp = &ent->next;
4472 }
4473 *entp = edir->elf.got.glist;
4474 }
4475
4476 edir->elf.got.glist = eind->elf.got.glist;
4477 eind->elf.got.glist = NULL;
4478 }
4479
4480 /* And plt entries. */
40d16e0b 4481 move_plt_plist (eind, edir);
411e1bfb 4482
fcfa13d2 4483 if (eind->elf.dynindx != -1)
411e1bfb 4484 {
fcfa13d2
AM
4485 if (edir->elf.dynindx != -1)
4486 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4487 edir->elf.dynstr_index);
411e1bfb
AM
4488 edir->elf.dynindx = eind->elf.dynindx;
4489 edir->elf.dynstr_index = eind->elf.dynstr_index;
4490 eind->elf.dynindx = -1;
4491 eind->elf.dynstr_index = 0;
4492 }
411e1bfb
AM
4493}
4494
8387904d
AM
4495/* Find the function descriptor hash entry from the given function code
4496 hash entry FH. Link the entries via their OH fields. */
4497
4498static struct ppc_link_hash_entry *
b31867b6 4499lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM
4500{
4501 struct ppc_link_hash_entry *fdh = fh->oh;
4502
4503 if (fdh == NULL)
4504 {
4505 const char *fd_name = fh->elf.root.root.string + 1;
4506
4507 fdh = (struct ppc_link_hash_entry *)
4508 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM
4509 if (fdh == NULL)
4510 return fdh;
4511
4512 fdh->is_func_descriptor = 1;
4513 fdh->oh = fh;
4514 fh->is_func = 1;
4515 fh->oh = fdh;
8387904d
AM
4516 }
4517
b31867b6 4518 return ppc_follow_link (fdh);
8387904d
AM
4519}
4520
bb700d78
AM
4521/* Make a fake function descriptor sym for the code sym FH. */
4522
4523static struct ppc_link_hash_entry *
4524make_fdh (struct bfd_link_info *info,
908b32fc 4525 struct ppc_link_hash_entry *fh)
bb700d78
AM
4526{
4527 bfd *abfd;
4528 asymbol *newsym;
4529 struct bfd_link_hash_entry *bh;
4530 struct ppc_link_hash_entry *fdh;
4531
4532 abfd = fh->elf.root.u.undef.abfd;
4533 newsym = bfd_make_empty_symbol (abfd);
4534 newsym->name = fh->elf.root.root.string + 1;
4535 newsym->section = bfd_und_section_ptr;
4536 newsym->value = 0;
908b32fc 4537 newsym->flags = BSF_WEAK;
bb700d78
AM
4538
4539 bh = NULL;
4540 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4541 newsym->flags, newsym->section,
4542 newsym->value, NULL, FALSE, FALSE,
4543 &bh))
4544 return NULL;
4545
4546 fdh = (struct ppc_link_hash_entry *) bh;
4547 fdh->elf.non_elf = 0;
908b32fc
AM
4548 fdh->fake = 1;
4549 fdh->is_func_descriptor = 1;
4550 fdh->oh = fh;
4551 fh->is_func = 1;
4552 fh->oh = fdh;
bb700d78
AM
4553 return fdh;
4554}
4555
8387904d
AM
4556/* Fix function descriptor symbols defined in .opd sections to be
4557 function type. */
555cd476
AM
4558
4559static bfd_boolean
b3fac117 4560ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
e054468f 4561 struct bfd_link_info *info,
555cd476 4562 Elf_Internal_Sym *isym,
b3fac117 4563 const char **name ATTRIBUTE_UNUSED,
555cd476
AM
4564 flagword *flags ATTRIBUTE_UNUSED,
4565 asection **sec,
4566 bfd_vma *value ATTRIBUTE_UNUSED)
4567{
e054468f
AM
4568 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4569 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4570 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4571 ;
4572 else if (*sec != NULL
4573 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4574 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4575
555cd476
AM
4576 return TRUE;
4577}
4578
8387904d 4579/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM
4580 inclusion of a new ABI object archive that defines "bar".
4581 NAME is a symbol defined in an archive. Return a symbol in the hash
4582 table that might be satisfied by the archive symbols. */
8387904d
AM
4583
4584static struct elf_link_hash_entry *
4585ppc64_elf_archive_symbol_lookup (bfd *abfd,
4586 struct bfd_link_info *info,
4587 const char *name)
4588{
4589 struct elf_link_hash_entry *h;
4590 char *dot_name;
4591 size_t len;
4592
4593 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM
4594 if (h != NULL
4595 /* Don't return this sym if it is a fake function descriptor
4596 created by add_symbol_adjust. */
4597 && !(h->root.type == bfd_link_hash_undefweak
4598 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM
4599 return h;
4600
4601 if (name[0] == '.')
4602 return h;
4603
4604 len = strlen (name);
4605 dot_name = bfd_alloc (abfd, len + 2);
4606 if (dot_name == NULL)
4607 return (struct elf_link_hash_entry *) 0 - 1;
4608 dot_name[0] = '.';
4609 memcpy (dot_name + 1, name, len + 1);
4610 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4611 bfd_release (abfd, dot_name);
4612 return h;
4613}
4614
4615/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM
4616 new ABI object defines "bar". Well, at least, undefined dot symbols
4617 are made weak. This stops later archive searches from including an
4618 object if we already have a function descriptor definition. It also
35b0ce59
AM
4619 prevents the linker complaining about undefined symbols.
4620 We also check and correct mismatched symbol visibility here. The
4621 most restrictive visibility of the function descriptor and the
4622 function entry symbol is used. */
8387904d
AM
4623
4624static bfd_boolean
b3fac117 4625add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4626{
8387904d
AM
4627 struct ppc_link_hash_table *htab;
4628 struct ppc_link_hash_entry *fdh;
4629
b3fac117 4630 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM
4631 return TRUE;
4632
b3fac117
AM
4633 if (eh->elf.root.type == bfd_link_hash_warning)
4634 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4635
b3fac117
AM
4636 if (eh->elf.root.root.string[0] != '.')
4637 abort ();
8387904d 4638
b3fac117 4639 htab = ppc_hash_table (info);
4dfe6ac6
NC
4640 if (htab == NULL)
4641 return FALSE;
4642
b31867b6
AM
4643 fdh = lookup_fdh (eh, htab);
4644 if (fdh == NULL)
4645 {
4646 if (!info->relocatable
4647 && (eh->elf.root.type == bfd_link_hash_undefined
4648 || eh->elf.root.type == bfd_link_hash_undefweak)
4649 && eh->elf.ref_regular)
4650 {
4651 /* Make an undefweak function descriptor sym, which is enough to
4652 pull in an --as-needed shared lib, but won't cause link
4653 errors. Archives are handled elsewhere. */
4654 fdh = make_fdh (info, eh);
4655 if (fdh == NULL)
4656 return FALSE;
4657 fdh->elf.ref_regular = 1;
4658 }
bb700d78 4659 }
b31867b6 4660 else
8387904d 4661 {
35b0ce59
AM
4662 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4663 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4664 if (entry_vis < descr_vis)
4665 fdh->elf.other += entry_vis - descr_vis;
4666 else if (entry_vis > descr_vis)
4667 eh->elf.other += descr_vis - entry_vis;
4668
e87d886e
AM
4669 if ((fdh->elf.root.type == bfd_link_hash_defined
4670 || fdh->elf.root.type == bfd_link_hash_defweak)
4671 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM
4672 {
4673 eh->elf.root.type = bfd_link_hash_undefweak;
4674 eh->was_undefined = 1;
4675 htab->twiddled_syms = 1;
4676 }
8387904d 4677 }
99877b66 4678
8387904d
AM
4679 return TRUE;
4680}
4681
b3fac117
AM
4682/* Process list of dot-symbols we made in link_hash_newfunc. */
4683
8387904d 4684static bfd_boolean
7d9616d7 4685ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
8387904d 4686{
99877b66 4687 struct ppc_link_hash_table *htab;
b3fac117 4688 struct ppc_link_hash_entry **p, *eh;
433817dd 4689
0c8d6e5c 4690 if (!is_ppc64_elf (info->output_bfd))
35b0ce59 4691 return TRUE;
4dfe6ac6
NC
4692 htab = ppc_hash_table (info);
4693 if (htab == NULL)
4694 return FALSE;
35b0ce59 4695
0c8d6e5c 4696 if (is_ppc64_elf (ibfd))
b3fac117
AM
4697 {
4698 p = &htab->dot_syms;
4699 while ((eh = *p) != NULL)
4700 {
4701 *p = NULL;
4702 if (!add_symbol_adjust (eh, info))
4703 return FALSE;
4704 p = &eh->u.next_dot_sym;
4705 }
4706 }
4707
4708 /* Clear the list for non-ppc64 input files. */
4709 p = &htab->dot_syms;
4710 while ((eh = *p) != NULL)
4711 {
4712 *p = NULL;
4713 p = &eh->u.next_dot_sym;
4714 }
99877b66
AM
4715
4716 /* We need to fix the undefs list for any syms we have twiddled to
4717 undef_weak. */
4718 if (htab->twiddled_syms)
4719 {
77cfaee6 4720 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM
4721 htab->twiddled_syms = 0;
4722 }
b3fac117 4723 return TRUE;
8387904d
AM
4724}
4725
97fed1c9
JJ
4726/* Undo hash table changes when an --as-needed input file is determined
4727 not to be needed. */
4728
4729static bfd_boolean
4730ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4731 struct bfd_link_info *info)
4732{
4dfe6ac6
NC
4733 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4734
4735 if (htab == NULL)
4736 return FALSE;
4737
4738 htab->dot_syms = NULL;
97fed1c9
JJ
4739 return TRUE;
4740}
4741
e054468f 4742static struct plt_entry **
4ce794b7
AM
4743update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4744 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM
4745{
4746 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 4747 struct plt_entry **local_plt;
f961d9dd 4748 unsigned char *local_got_tls_masks;
411e1bfb
AM
4749
4750 if (local_got_ents == NULL)
4751 {
4752 bfd_size_type size = symtab_hdr->sh_info;
4753
e054468f
AM
4754 size *= (sizeof (*local_got_ents)
4755 + sizeof (*local_plt)
4756 + sizeof (*local_got_tls_masks));
4ce794b7 4757 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 4758 if (local_got_ents == NULL)
e054468f 4759 return NULL;
411e1bfb
AM
4760 elf_local_got_ents (abfd) = local_got_ents;
4761 }
4762
e054468f 4763 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM
4764 {
4765 struct got_entry *ent;
4766
4767 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM
4768 if (ent->addend == r_addend
4769 && ent->owner == abfd
4770 && ent->tls_type == tls_type)
411e1bfb
AM
4771 break;
4772 if (ent == NULL)
4773 {
4774 bfd_size_type amt = sizeof (*ent);
4ce794b7 4775 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4776 if (ent == NULL)
4777 return FALSE;
4778 ent->next = local_got_ents[r_symndx];
4779 ent->addend = r_addend;
e717da7e 4780 ent->owner = abfd;
411e1bfb 4781 ent->tls_type = tls_type;
927be08e 4782 ent->is_indirect = FALSE;
411e1bfb
AM
4783 ent->got.refcount = 0;
4784 local_got_ents[r_symndx] = ent;
4785 }
4786 ent->got.refcount += 1;
4787 }
4788
e054468f 4789 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 4790 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 4791 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
4792
4793 return local_plt + r_symndx;
65f38f15
AM
4794}
4795
411e1bfb 4796static bfd_boolean
e054468f 4797update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 4798{
411e1bfb 4799 struct plt_entry *ent;
1e2f5b6e 4800
e054468f 4801 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM
4802 if (ent->addend == addend)
4803 break;
4804 if (ent == NULL)
1e2f5b6e 4805 {
411e1bfb 4806 bfd_size_type amt = sizeof (*ent);
4ce794b7 4807 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4808 if (ent == NULL)
4809 return FALSE;
e054468f 4810 ent->next = *plist;
411e1bfb
AM
4811 ent->addend = addend;
4812 ent->plt.refcount = 0;
e054468f 4813 *plist = ent;
1e2f5b6e 4814 }
411e1bfb 4815 ent->plt.refcount += 1;
b34976b6 4816 return TRUE;
1e2f5b6e
AM
4817}
4818
e054468f
AM
4819static bfd_boolean
4820is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4821{
4822 return (r_type == R_PPC64_REL24
4823 || r_type == R_PPC64_REL14
4824 || r_type == R_PPC64_REL14_BRTAKEN
4825 || r_type == R_PPC64_REL14_BRNTAKEN
4826 || r_type == R_PPC64_ADDR24
4827 || r_type == R_PPC64_ADDR14
4828 || r_type == R_PPC64_ADDR14_BRTAKEN
4829 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4830}
4831
5bd4f169 4832/* Look through the relocs for a section during the first phase, and
65f38f15 4833 calculate needed space in the global offset table, procedure
5d1634d7 4834 linkage table, and dynamic reloc sections. */
5bd4f169 4835
b34976b6 4836static bfd_boolean
4ce794b7
AM
4837ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4838 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4839{
65f38f15 4840 struct ppc_link_hash_table *htab;
5bd4f169
AM
4841 Elf_Internal_Shdr *symtab_hdr;
4842 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4843 const Elf_Internal_Rela *rel;
4844 const Elf_Internal_Rela *rel_end;
5bd4f169 4845 asection *sreloc;
1e2f5b6e 4846 asection **opd_sym_map;
3a71aa26 4847 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 4848
1049f94e 4849 if (info->relocatable)
b34976b6 4850 return TRUE;
5bd4f169 4851
680a3378
AM
4852 /* Don't do anything special with non-loaded, non-alloced sections.
4853 In particular, any relocs in such sections should not affect GOT
4854 and PLT reference counting (ie. we don't allow them to create GOT
4855 or PLT entries), there's no possibility or desire to optimize TLS
4856 relocs, and there's not much point in propagating relocs to shared
4857 libs that the dynamic linker won't relocate. */
4858 if ((sec->flags & SEC_ALLOC) == 0)
4859 return TRUE;
4860
0c8d6e5c 4861 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4862
65f38f15 4863 htab = ppc_hash_table (info);
4dfe6ac6
NC
4864 if (htab == NULL)
4865 return FALSE;
4866
3a71aa26
AM
4867 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4868 FALSE, FALSE, TRUE);
4869 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4870 FALSE, FALSE, TRUE);
0ffa91dd 4871 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169
AM
4872
4873 sym_hashes = elf_sym_hashes (abfd);
4874 sym_hashes_end = (sym_hashes
1e2f5b6e
AM
4875 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4876 - symtab_hdr->sh_info);
5bd4f169
AM
4877
4878 sreloc = NULL;
1e2f5b6e
AM
4879 opd_sym_map = NULL;
4880 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4881 {
4882 /* Garbage collection needs some extra help with .opd sections.
4883 We don't want to necessarily keep everything referenced by
4884 relocs in .opd, as that would keep all functions. Instead,
4885 if we reference an .opd symbol (a function descriptor), we
4886 want to keep the function code symbol's section. This is
4887 easy for global symbols, but for local syms we need to keep
74f0fb50 4888 information about the associated function section. */
1e2f5b6e
AM
4889 bfd_size_type amt;
4890
74f0fb50 4891 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4892 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4893 if (opd_sym_map == NULL)
b34976b6 4894 return FALSE;
74f0fb50 4895 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM
4896 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4897 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4898 }
5bd4f169 4899
82bd7b59
AM
4900 if (htab->sfpr == NULL
4901 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4902 return FALSE;
82bd7b59 4903
5bd4f169
AM
4904 rel_end = relocs + sec->reloc_count;
4905 for (rel = relocs; rel < rel_end; rel++)
4906 {
4907 unsigned long r_symndx;
4908 struct elf_link_hash_entry *h;
04c9666a 4909 enum elf_ppc64_reloc_type r_type;
727fc41e 4910 int tls_type;
7c8fe5c4 4911 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 4912 struct plt_entry **ifunc;
5bd4f169
AM
4913
4914 r_symndx = ELF64_R_SYM (rel->r_info);
4915 if (r_symndx < symtab_hdr->sh_info)
4916 h = NULL;
4917 else
973a3492
L
4918 {
4919 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 4920 h = elf_follow_link (h);
973a3492 4921 }
5bd4f169 4922
727fc41e 4923 tls_type = 0;
e054468f 4924 ifunc = NULL;
25f23106
AM
4925 if (h != NULL)
4926 {
4927 if (h->type == STT_GNU_IFUNC)
4928 {
4929 h->needs_plt = 1;
4930 ifunc = &h->plt.plist;
4931 }
4932 }
4933 else
4934 {
4935 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4936 abfd, r_symndx);
4937 if (isym == NULL)
4938 return FALSE;
4939
4940 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4941 {
4942 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4943 rel->r_addend, PLT_IFUNC);
4944 if (ifunc == NULL)
4945 return FALSE;
4946 }
4947 }
4ce794b7 4948 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM
4949 if (is_branch_reloc (r_type))
4950 {
4951 if (h != NULL && (h == tga || h == dottga))
4952 {
4953 if (rel != relocs
4954 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4955 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4956 /* We have a new-style __tls_get_addr call with a marker
4957 reloc. */
4958 ;
4959 else
4960 /* Mark this section as having an old-style call. */
4961 sec->has_tls_get_addr_call = 1;
4962 }
727fc41e 4963
e054468f 4964 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM
4965 if (ifunc != NULL
4966 && !update_plt_info (abfd, ifunc, rel->r_addend))
4967 return FALSE;
4968 }
727fc41e 4969
a33d1f77 4970 switch (r_type)
5bd4f169 4971 {
727fc41e
AM
4972 case R_PPC64_TLSGD:
4973 case R_PPC64_TLSLD:
4974 /* These special tls relocs tie a call to __tls_get_addr with
4975 its parameter symbol. */
4976 break;
4977
411e1bfb
AM
4978 case R_PPC64_GOT_TLSLD16:
4979 case R_PPC64_GOT_TLSLD16_LO:
4980 case R_PPC64_GOT_TLSLD16_HI:
4981 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 4982 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
4983 goto dogottls;
4984
4985 case R_PPC64_GOT_TLSGD16:
4986 case R_PPC64_GOT_TLSGD16_LO:
4987 case R_PPC64_GOT_TLSGD16_HI:
4988 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4989 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
4990 goto dogottls;
4991
4992 case R_PPC64_GOT_TPREL16_DS:
4993 case R_PPC64_GOT_TPREL16_LO_DS:
4994 case R_PPC64_GOT_TPREL16_HI:
4995 case R_PPC64_GOT_TPREL16_HA:
1d483afe 4996 if (!info->executable)
411e1bfb
AM
4997 info->flags |= DF_STATIC_TLS;
4998 tls_type = TLS_TLS | TLS_TPREL;
4999 goto dogottls;
5000
5001 case R_PPC64_GOT_DTPREL16_DS:
5002 case R_PPC64_GOT_DTPREL16_LO_DS:
5003 case R_PPC64_GOT_DTPREL16_HI:
5004 case R_PPC64_GOT_DTPREL16_HA:
5005 tls_type = TLS_TLS | TLS_DTPREL;
5006 dogottls:
5007 sec->has_tls_reloc = 1;
5008 /* Fall thru */
5009
5bd4f169 5010 case R_PPC64_GOT16:
5bd4f169 5011 case R_PPC64_GOT16_DS:
65f38f15
AM
5012 case R_PPC64_GOT16_HA:
5013 case R_PPC64_GOT16_HI:
5014 case R_PPC64_GOT16_LO:
5bd4f169 5015 case R_PPC64_GOT16_LO_DS:
65f38f15 5016 /* This symbol requires a global offset table entry. */
4c52953f 5017 sec->has_toc_reloc = 1;
33c0ec9d
AM
5018 if (r_type == R_PPC64_GOT_TLSLD16
5019 || r_type == R_PPC64_GOT_TLSGD16
5020 || r_type == R_PPC64_GOT_TPREL16_DS
5021 || r_type == R_PPC64_GOT_DTPREL16_DS
5022 || r_type == R_PPC64_GOT16
5023 || r_type == R_PPC64_GOT16_DS)
5024 {
5025 htab->do_multi_toc = 1;
5026 sec->has_small_toc_reloc = 1;
5027 }
5028
e717da7e
AM
5029 if (ppc64_elf_tdata (abfd)->got == NULL
5030 && !create_got_section (abfd, info))
b34976b6 5031 return FALSE;
5bd4f169
AM
5032
5033 if (h != NULL)
5034 {
411e1bfb
AM
5035 struct ppc_link_hash_entry *eh;
5036 struct got_entry *ent;
65f38f15 5037
411e1bfb
AM
5038 eh = (struct ppc_link_hash_entry *) h;
5039 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5040 if (ent->addend == rel->r_addend
e717da7e 5041 && ent->owner == abfd
411e1bfb
AM
5042 && ent->tls_type == tls_type)
5043 break;
5044 if (ent == NULL)
5bd4f169 5045 {
411e1bfb 5046 bfd_size_type amt = sizeof (*ent);
4ce794b7 5047 ent = bfd_alloc (abfd, amt);
411e1bfb 5048 if (ent == NULL)
b34976b6 5049 return FALSE;
411e1bfb
AM
5050 ent->next = eh->elf.got.glist;
5051 ent->addend = rel->r_addend;
e717da7e 5052 ent->owner = abfd;
411e1bfb 5053 ent->tls_type = tls_type;
927be08e 5054 ent->is_indirect = FALSE;
411e1bfb
AM
5055 ent->got.refcount = 0;
5056 eh->elf.got.glist = ent;
5bd4f169 5057 }
411e1bfb 5058 ent->got.refcount += 1;
e7b938ca 5059 eh->tls_mask |= tls_type;
5bd4f169 5060 }
411e1bfb
AM
5061 else
5062 /* This is a global offset table entry for a local symbol. */
5063 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5064 rel->r_addend, tls_type))
5065 return FALSE;
5bd4f169
AM
5066 break;
5067
5bd4f169 5068 case R_PPC64_PLT16_HA:
65f38f15
AM
5069 case R_PPC64_PLT16_HI:
5070 case R_PPC64_PLT16_LO:
5071 case R_PPC64_PLT32:
5072 case R_PPC64_PLT64:
5bd4f169 5073 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM
5074 actually build the entry in adjust_dynamic_symbol,
5075 because this might be a case of linking PIC code without
5076 linking in any dynamic objects, in which case we don't
5077 need to generate a procedure linkage table after all. */
5bd4f169
AM
5078 if (h == NULL)
5079 {
5080 /* It does not make sense to have a procedure linkage
3fad3c7c 5081 table entry for a local symbol. */
5bd4f169 5082 bfd_set_error (bfd_error_bad_value);
b34976b6 5083 return FALSE;
5bd4f169 5084 }
411e1bfb 5085 else
e054468f
AM
5086 {
5087 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5088 return FALSE;
5089 h->needs_plt = 1;
5090 if (h->root.root.string[0] == '.'
5091 && h->root.root.string[1] != '\0')
5092 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5093 }
5bd4f169
AM
5094 break;
5095
5096 /* The following relocations don't need to propagate the
5097 relocation if linking a shared object since they are
5098 section relative. */
5099 case R_PPC64_SECTOFF:
5100 case R_PPC64_SECTOFF_LO:
5101 case R_PPC64_SECTOFF_HI:
5102 case R_PPC64_SECTOFF_HA:
5103 case R_PPC64_SECTOFF_DS:
5104 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM
5105 case R_PPC64_DTPREL16:
5106 case R_PPC64_DTPREL16_LO:
5107 case R_PPC64_DTPREL16_HI:
5108 case R_PPC64_DTPREL16_HA:
5109 case R_PPC64_DTPREL16_DS:
5110 case R_PPC64_DTPREL16_LO_DS:
5111 case R_PPC64_DTPREL16_HIGHER:
5112 case R_PPC64_DTPREL16_HIGHERA:
5113 case R_PPC64_DTPREL16_HIGHEST:
5114 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM
5115 break;
5116
ad8e1ba5 5117 /* Nor do these. */
25f23106
AM
5118 case R_PPC64_REL16:
5119 case R_PPC64_REL16_LO:
5120 case R_PPC64_REL16_HI:
5121 case R_PPC64_REL16_HA:
5122 break;
5123
ad8e1ba5 5124 case R_PPC64_TOC16:
33c0ec9d
AM
5125 case R_PPC64_TOC16_DS:
5126 htab->do_multi_toc = 1;
5127 sec->has_small_toc_reloc = 1;
ad8e1ba5
AM
5128 case R_PPC64_TOC16_LO:
5129 case R_PPC64_TOC16_HI:
5130 case R_PPC64_TOC16_HA:
ad8e1ba5 5131 case R_PPC64_TOC16_LO_DS:
4c52953f 5132 sec->has_toc_reloc = 1;
ad8e1ba5
AM
5133 break;
5134
5bd4f169
AM
5135 /* This relocation describes the C++ object vtable hierarchy.
5136 Reconstruct it for later use during GC. */
5137 case R_PPC64_GNU_VTINHERIT:
c152c796 5138 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5139 return FALSE;
5bd4f169
AM
5140 break;
5141
5142 /* This relocation describes which C++ vtable entries are actually
5143 used. Record for later use during GC. */
5144 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB
5145 BFD_ASSERT (h != NULL);
5146 if (h != NULL
5147 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5148 return FALSE;
5bd4f169
AM
5149 break;
5150
721956f4
AM
5151 case R_PPC64_REL14:
5152 case R_PPC64_REL14_BRTAKEN:
5153 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM
5154 {
5155 asection *dest = NULL;
5156
5157 /* Heuristic: If jumping outside our section, chances are
5158 we are going to need a stub. */
5159 if (h != NULL)
5160 {
5161 /* If the sym is weak it may be overridden later, so
5162 don't assume we know where a weak sym lives. */
5163 if (h->root.type == bfd_link_hash_defined)
5164 dest = h->root.u.def.section;
5165 }
5166 else
87d72d41
AM
5167 {
5168 Elf_Internal_Sym *isym;
5169
5170 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5171 abfd, r_symndx);
5172 if (isym == NULL)
5173 return FALSE;
5174
5175 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5176 }
5177
220c76dd 5178 if (dest != sec)
7c8fe5c4 5179 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5180 }
721956f4
AM
5181 /* Fall through. */
5182
5d1634d7 5183 case R_PPC64_REL24:
e054468f 5184 if (h != NULL && ifunc == NULL)
5d1634d7
AM
5185 {
5186 /* We may need a .plt entry if the function this reloc
5187 refers to is in a shared lib. */
e054468f 5188 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5189 return FALSE;
e054468f
AM
5190 h->needs_plt = 1;
5191 if (h->root.root.string[0] == '.'
5192 && h->root.root.string[1] != '\0')
5193 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5194 if (h == tga || h == dottga)
411e1bfb 5195 sec->has_tls_reloc = 1;
411e1bfb
AM
5196 }
5197 break;
5198
5199 case R_PPC64_TPREL64:
5200 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
1d483afe 5201 if (!info->executable)
411e1bfb
AM
5202 info->flags |= DF_STATIC_TLS;
5203 goto dotlstoc;
5204
5205 case R_PPC64_DTPMOD64:
5206 if (rel + 1 < rel_end
5207 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5208 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5209 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5210 else
951fd09b 5211 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM
5212 goto dotlstoc;
5213
5214 case R_PPC64_DTPREL64:
5215 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5216 if (rel != relocs
5217 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5218 && rel[-1].r_offset == rel->r_offset - 8)
5219 /* This is the second reloc of a dtpmod, dtprel pair.
5220 Don't mark with TLS_DTPREL. */
5221 goto dodyn;
5222
5223 dotlstoc:
5224 sec->has_tls_reloc = 1;
5225 if (h != NULL)
5226 {
5227 struct ppc_link_hash_entry *eh;
5228 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5229 eh->tls_mask |= tls_type;
411e1bfb
AM
5230 }
5231 else
5232 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5233 rel->r_addend, tls_type))
5234 return FALSE;
5235
7c8fe5c4
AM
5236 ppc64_sec = ppc64_elf_section_data (sec);
5237 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5238 {
3a71aa26
AM
5239 bfd_size_type amt;
5240
e7b938ca 5241 /* One extra to simplify get_tls_mask. */
3a71aa26
AM
5242 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5243 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5244 if (ppc64_sec->u.toc.symndx == NULL)
5245 return FALSE;
5246 amt = sec->size * sizeof (bfd_vma) / 8;
5247 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5248 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5249 return FALSE;
7c8fe5c4
AM
5250 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5251 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM
5252 }
5253 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM
5254 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5255 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM
5256
5257 /* Mark the second slot of a GD or LD entry.
5258 -1 to indicate GD and -2 to indicate LD. */
5259 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5260 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5261 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5262 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM
5263 goto dodyn;
5264
5265 case R_PPC64_TPREL16:
5266 case R_PPC64_TPREL16_LO:
5267 case R_PPC64_TPREL16_HI:
5268 case R_PPC64_TPREL16_HA:
5269 case R_PPC64_TPREL16_DS:
5270 case R_PPC64_TPREL16_LO_DS:
5271 case R_PPC64_TPREL16_HIGHER:
5272 case R_PPC64_TPREL16_HIGHERA:
5273 case R_PPC64_TPREL16_HIGHEST:
5274 case R_PPC64_TPREL16_HIGHESTA:
5275 if (info->shared)
5276 {
1d483afe
AM
5277 if (!info->executable)
5278 info->flags |= DF_STATIC_TLS;
411e1bfb 5279 goto dodyn;
5d1634d7
AM
5280 }
5281 break;
5282
e86ce104 5283 case R_PPC64_ADDR64:
1e2f5b6e 5284 if (opd_sym_map != NULL
1e2f5b6e 5285 && rel + 1 < rel_end
4ce794b7 5286 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5287 {
8387904d
AM
5288 if (h != NULL)
5289 {
5290 if (h->root.root.string[0] == '.'
5291 && h->root.root.string[1] != 0
b31867b6 5292 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM
5293 ;
5294 else
5295 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5296 }
5297 else
5298 {
5299 asection *s;
87d72d41 5300 Elf_Internal_Sym *isym;
1e2f5b6e 5301
87d72d41
AM
5302 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5303 abfd, r_symndx);
5304 if (isym == NULL)
8387904d 5305 return FALSE;
87d72d41
AM
5306
5307 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5308 if (s != NULL && s != sec)
3f764659 5309 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5310 }
1e2f5b6e 5311 }
e86ce104
AM
5312 /* Fall through. */
5313
04c9666a 5314 case R_PPC64_REL30:
5bd4f169 5315 case R_PPC64_REL32:
04c9666a 5316 case R_PPC64_REL64:
65f38f15
AM
5317 case R_PPC64_ADDR14:
5318 case R_PPC64_ADDR14_BRNTAKEN:
5319 case R_PPC64_ADDR14_BRTAKEN:
5320 case R_PPC64_ADDR16:
5321 case R_PPC64_ADDR16_DS:
5322 case R_PPC64_ADDR16_HA:
5323 case R_PPC64_ADDR16_HI:
5324 case R_PPC64_ADDR16_HIGHER:
5325 case R_PPC64_ADDR16_HIGHERA:
5326 case R_PPC64_ADDR16_HIGHEST:
5327 case R_PPC64_ADDR16_HIGHESTA:
5328 case R_PPC64_ADDR16_LO:
5329 case R_PPC64_ADDR16_LO_DS:
5330 case R_PPC64_ADDR24:
65f38f15 5331 case R_PPC64_ADDR32:
65f38f15
AM
5332 case R_PPC64_UADDR16:
5333 case R_PPC64_UADDR32:
5334 case R_PPC64_UADDR64:
5bd4f169 5335 case R_PPC64_TOC:
81848ca0
AM
5336 if (h != NULL && !info->shared)
5337 /* We may need a copy reloc. */
f5385ebf 5338 h->non_got_ref = 1;
81848ca0 5339
41bd81ab 5340 /* Don't propagate .opd relocs. */
1e2f5b6e 5341 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5342 break;
e86ce104 5343
65f38f15
AM
5344 /* If we are creating a shared library, and this is a reloc
5345 against a global symbol, or a non PC relative reloc
5346 against a local symbol, then we need to copy the reloc
5347 into the shared library. However, if we are linking with
5348 -Bsymbolic, we do not need to copy a reloc against a
5349 global symbol which is defined in an object we are
5350 including in the link (i.e., DEF_REGULAR is set). At
5351 this point we have not seen all the input files, so it is
5352 possible that DEF_REGULAR is not set now but will be set
5353 later (it is never cleared). In case of a weak definition,
5354 DEF_REGULAR may be cleared later by a strong definition in
5355 a shared library. We account for that possibility below by
f4656909 5356 storing information in the dyn_relocs field of the hash
65f38f15
AM
5357 table entry. A similar situation occurs when creating
5358 shared libraries and symbol visibility changes render the
5359 symbol local.
5360
5361 If on the other hand, we are creating an executable, we
5362 may need to keep relocations for symbols satisfied by a
5363 dynamic library if we manage to avoid copy relocs for the
5364 symbol. */
411e1bfb 5365 dodyn:
65f38f15 5366 if ((info->shared
1d483afe 5367 && (must_be_dyn_reloc (info, r_type)
65f38f15
AM
5368 || (h != NULL
5369 && (! info->symbolic
5370 || h->root.type == bfd_link_hash_defweak
f5385ebf 5371 || !h->def_regular))))
f4656909
AM
5372 || (ELIMINATE_COPY_RELOCS
5373 && !info->shared
65f38f15
AM
5374 && h != NULL
5375 && (h->root.type == bfd_link_hash_defweak
25f23106
AM
5376 || !h->def_regular))
5377 || (!info->shared
5378 && ifunc != NULL))
5bd4f169 5379 {
ec338859
AM
5380 struct ppc_dyn_relocs *p;
5381 struct ppc_dyn_relocs **head;
5382
65f38f15
AM
5383 /* We must copy these reloc types into the output file.
5384 Create a reloc section in dynobj and make room for
5385 this reloc. */
5bd4f169
AM
5386 if (sreloc == NULL)
5387 {
83bac4b0
NC
5388 sreloc = _bfd_elf_make_dynamic_reloc_section
5389 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5390
5bd4f169 5391 if (sreloc == NULL)
83bac4b0 5392 return FALSE;
5bd4f169
AM
5393 }
5394
65f38f15
AM
5395 /* If this is a global symbol, we count the number of
5396 relocations we need for this symbol. */
5397 if (h != NULL)
5398 {
ec338859 5399 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM
5400 }
5401 else
5402 {
ec338859
AM
5403 /* Track dynamic relocs needed for local syms too.
5404 We really need local syms available to do this
5405 easily. Oh well. */
ec338859 5406 asection *s;
6edfbbad 5407 void *vpp;
87d72d41 5408 Elf_Internal_Sym *isym;
6edfbbad 5409
87d72d41
AM
5410 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5411 abfd, r_symndx);
5412 if (isym == NULL)
b34976b6 5413 return FALSE;
ec338859 5414
87d72d41
AM
5415 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5416 if (s == NULL)
5417 s = sec;
5418
6edfbbad
DJ
5419 vpp = &elf_section_data (s)->local_dynrel;
5420 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 5421 }
ec338859
AM
5422
5423 p = *head;
5424 if (p == NULL || p->sec != sec)
5425 {
4ce794b7 5426 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 5427 if (p == NULL)
b34976b6 5428 return FALSE;
ec338859
AM
5429 p->next = *head;
5430 *head = p;
5431 p->sec = sec;
5432 p->count = 0;
5433 p->pc_count = 0;
5434 }
5435
5436 p->count += 1;
1d483afe 5437 if (!must_be_dyn_reloc (info, r_type))
ec338859 5438 p->pc_count += 1;
65f38f15 5439 }
5bd4f169 5440 break;
65f38f15
AM
5441
5442 default:
96e0dda4 5443 break;
5bd4f169
AM
5444 }
5445 }
5446
b34976b6 5447 return TRUE;
5bd4f169
AM
5448}
5449
8387904d
AM
5450/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5451 of the code entry point, and its section. */
5452
5453static bfd_vma
5454opd_entry_value (asection *opd_sec,
5455 bfd_vma offset,
5456 asection **code_sec,
5457 bfd_vma *code_off)
5458{
5459 bfd *opd_bfd = opd_sec->owner;
8860955f 5460 Elf_Internal_Rela *relocs;
8387904d 5461 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5462 bfd_vma val;
8387904d 5463
4b85d634
AM
5464 /* No relocs implies we are linking a --just-symbols object. */
5465 if (opd_sec->reloc_count == 0)
5466 {
4b85d634
AM
5467 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5468 return (bfd_vma) -1;
3b36f7e6 5469
4b85d634
AM
5470 if (code_sec != NULL)
5471 {
5472 asection *sec, *likely = NULL;
5473 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5474 if (sec->vma <= val
5475 && (sec->flags & SEC_LOAD) != 0
5476 && (sec->flags & SEC_ALLOC) != 0)
5477 likely = sec;
5478 if (likely != NULL)
5479 {
5480 *code_sec = likely;
5481 if (code_off != NULL)
5482 *code_off = val - likely->vma;
5483 }
5484 }
5485 return val;
5486 }
5487
0c8d6e5c 5488 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5489
8860955f
AM
5490 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5491 if (relocs == NULL)
5492 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5493
8387904d 5494 /* Go find the opd reloc at the sym address. */
8860955f 5495 lo = relocs;
8387904d
AM
5496 BFD_ASSERT (lo != NULL);
5497 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5498 val = (bfd_vma) -1;
8387904d
AM
5499 while (lo < hi)
5500 {
5501 look = lo + (hi - lo) / 2;
5502 if (look->r_offset < offset)
5503 lo = look + 1;
5504 else if (look->r_offset > offset)
5505 hi = look;
5506 else
5507 {
0ffa91dd
NC
5508 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5509
8387904d
AM
5510 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5511 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5512 {
5513 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM
5514 asection *sec;
5515
5516 if (symndx < symtab_hdr->sh_info)
5517 {
5518 Elf_Internal_Sym *sym;
5519
5520 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5521 if (sym == NULL)
5522 {
5523 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5524 symtab_hdr->sh_info,
5525 0, NULL, NULL, NULL);
5526 if (sym == NULL)
645ea6a9 5527 break;
8387904d
AM
5528 symtab_hdr->contents = (bfd_byte *) sym;
5529 }
5530
5531 sym += symndx;
5532 val = sym->st_value;
cb33740c 5533 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM
5534 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5535 }
5536 else
5537 {
5538 struct elf_link_hash_entry **sym_hashes;
5539 struct elf_link_hash_entry *rh;
5540
5541 sym_hashes = elf_sym_hashes (opd_bfd);
5542 rh = sym_hashes[symndx - symtab_hdr->sh_info];
b31867b6 5543 rh = elf_follow_link (rh);
8387904d
AM
5544 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5545 || rh->root.type == bfd_link_hash_defweak);
5546 val = rh->root.u.def.value;
5547 sec = rh->root.u.def.section;
5548 }
5549 val += look->r_addend;
5550 if (code_off != NULL)
5551 *code_off = val;
5552 if (code_sec != NULL)
5553 *code_sec = sec;
5554 if (sec != NULL && sec->output_section != NULL)
5555 val += sec->output_section->vma + sec->output_offset;
8387904d
AM
5556 }
5557 break;
5558 }
5559 }
645ea6a9 5560
645ea6a9 5561 return val;
8387904d
AM
5562}
5563
b31867b6
AM
5564/* If FDH is a function descriptor symbol, return the associated code
5565 entry symbol if it is defined. Return NULL otherwise. */
5566
5567static struct ppc_link_hash_entry *
5568defined_code_entry (struct ppc_link_hash_entry *fdh)
5569{
5570 if (fdh->is_func_descriptor)
5571 {
5572 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5573 if (fh->elf.root.type == bfd_link_hash_defined
5574 || fh->elf.root.type == bfd_link_hash_defweak)
5575 return fh;
5576 }
5577 return NULL;
5578}
5579
5580/* If FH is a function code entry symbol, return the associated
5581 function descriptor symbol if it is defined. Return NULL otherwise. */
5582
5583static struct ppc_link_hash_entry *
5584defined_func_desc (struct ppc_link_hash_entry *fh)
5585{
5586 if (fh->oh != NULL
5587 && fh->oh->is_func_descriptor)
5588 {
5589 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5590 if (fdh->elf.root.type == bfd_link_hash_defined
5591 || fdh->elf.root.type == bfd_link_hash_defweak)
5592 return fdh;
5593 }
5594 return NULL;
5595}
5596
74f0fb50
AM
5597/* Mark all our entry sym sections, both opd and code section. */
5598
5599static void
5600ppc64_elf_gc_keep (struct bfd_link_info *info)
5601{
5602 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5603 struct bfd_sym_chain *sym;
5604
4dfe6ac6
NC
5605 if (htab == NULL)
5606 return;
5607
74f0fb50
AM
5608 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5609 {
b31867b6 5610 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM
5611 asection *sec;
5612
5613 eh = (struct ppc_link_hash_entry *)
b31867b6 5614 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM
5615 if (eh == NULL)
5616 continue;
5617 if (eh->elf.root.type != bfd_link_hash_defined
5618 && eh->elf.root.type != bfd_link_hash_defweak)
5619 continue;
5620
b31867b6
AM
5621 fh = defined_code_entry (eh);
5622 if (fh != NULL)
74f0fb50 5623 {
b31867b6 5624 sec = fh->elf.root.u.def.section;
74f0fb50
AM
5625 sec->flags |= SEC_KEEP;
5626 }
5627 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5628 && opd_entry_value (eh->elf.root.u.def.section,
5629 eh->elf.root.u.def.value,
5630 &sec, NULL) != (bfd_vma) -1)
5631 sec->flags |= SEC_KEEP;
5632
5633 sec = eh->elf.root.u.def.section;
5634 sec->flags |= SEC_KEEP;
5635 }
5636}
5637
64d03ab5
AM
5638/* Mark sections containing dynamically referenced symbols. When
5639 building shared libraries, we must assume that any visible symbol is
5640 referenced. */
5641
5642static bfd_boolean
5643ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5644{
5645 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5646 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 5647 struct ppc_link_hash_entry *fdh;
64d03ab5
AM
5648
5649 if (eh->elf.root.type == bfd_link_hash_warning)
5650 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5651
5652 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM
5653 fdh = defined_func_desc (eh);
5654 if (fdh != NULL)
5655 eh = fdh;
64d03ab5
AM
5656
5657 if ((eh->elf.root.type == bfd_link_hash_defined
5658 || eh->elf.root.type == bfd_link_hash_defweak)
5659 && (eh->elf.ref_dynamic
5660 || (!info->executable
5661 && eh->elf.def_regular
5662 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5663 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5664 {
5665 asection *code_sec;
b31867b6 5666 struct ppc_link_hash_entry *fh;
64d03ab5
AM
5667
5668 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5669
5670 /* Function descriptor syms cause the associated
5671 function code sym section to be marked. */
b31867b6
AM
5672 fh = defined_code_entry (eh);
5673 if (fh != NULL)
5674 {
5675 code_sec = fh->elf.root.u.def.section;
5676 code_sec->flags |= SEC_KEEP;
5677 }
64d03ab5
AM
5678 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5679 && opd_entry_value (eh->elf.root.u.def.section,
5680 eh->elf.root.u.def.value,
5681 &code_sec, NULL) != (bfd_vma) -1)
5682 code_sec->flags |= SEC_KEEP;
5683 }
5684
5685 return TRUE;
5686}
5687
5bd4f169
AM
5688/* Return the section that should be marked against GC for a given
5689 relocation. */
5690
5691static asection *
4ce794b7 5692ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 5693 struct bfd_link_info *info,
4ce794b7
AM
5694 Elf_Internal_Rela *rel,
5695 struct elf_link_hash_entry *h,
5696 Elf_Internal_Sym *sym)
5bd4f169 5697{
ccfa59ea
AM
5698 asection *rsec;
5699
ccfa59ea
AM
5700 /* Syms return NULL if we're marking .opd, so we avoid marking all
5701 function sections, as all functions are referenced in .opd. */
5702 rsec = NULL;
5703 if (get_opd_info (sec) != NULL)
5704 return rsec;
1e2f5b6e 5705
5bd4f169
AM
5706 if (h != NULL)
5707 {
04c9666a 5708 enum elf_ppc64_reloc_type r_type;
b31867b6 5709 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 5710
4ce794b7 5711 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5712 switch (r_type)
5bd4f169
AM
5713 {
5714 case R_PPC64_GNU_VTINHERIT:
5715 case R_PPC64_GNU_VTENTRY:
5716 break;
5717
5718 default:
5719 switch (h->root.type)
5720 {
5721 case bfd_link_hash_defined:
5722 case bfd_link_hash_defweak:
ccfa59ea 5723 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM
5724 fdh = defined_func_desc (eh);
5725 if (fdh != NULL)
5726 eh = fdh;
1e2f5b6e
AM
5727
5728 /* Function descriptor syms cause the associated
5729 function code sym section to be marked. */
b31867b6
AM
5730 fh = defined_code_entry (eh);
5731 if (fh != NULL)
ccfa59ea
AM
5732 {
5733 /* They also mark their opd section. */
74f0fb50 5734 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5735
b31867b6 5736 rsec = fh->elf.root.u.def.section;
ccfa59ea 5737 }
8387904d
AM
5738 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5739 && opd_entry_value (eh->elf.root.u.def.section,
5740 eh->elf.root.u.def.value,
5741 &rsec, NULL) != (bfd_vma) -1)
74f0fb50 5742 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5743 else
1e2f5b6e
AM
5744 rsec = h->root.u.def.section;
5745 break;
5bd4f169
AM
5746
5747 case bfd_link_hash_common:
1e2f5b6e
AM
5748 rsec = h->root.u.c.p->section;
5749 break;
5bd4f169
AM
5750
5751 default:
fb34365b 5752 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM
5753 }
5754 }
5755 }
5756 else
5757 {
74f0fb50 5758 struct _opd_sec_data *opd;
1e2f5b6e
AM
5759
5760 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM
5761 opd = get_opd_info (rsec);
5762 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5763 {
74f0fb50 5764 rsec->gc_mark = 1;
ccfa59ea 5765
74f0fb50 5766 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5767 }
5bd4f169
AM
5768 }
5769
1e2f5b6e 5770 return rsec;
5bd4f169
AM
5771}
5772
65f38f15
AM
5773/* Update the .got, .plt. and dynamic reloc reference counts for the
5774 section being removed. */
5bd4f169 5775
b34976b6 5776static bfd_boolean
4ce794b7
AM
5777ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5778 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5779{
411e1bfb 5780 struct ppc_link_hash_table *htab;
5bd4f169
AM
5781 Elf_Internal_Shdr *symtab_hdr;
5782 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5783 struct got_entry **local_got_ents;
5bd4f169 5784 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5785
7dda2462
TG
5786 if (info->relocatable)
5787 return TRUE;
5788
680a3378
AM
5789 if ((sec->flags & SEC_ALLOC) == 0)
5790 return TRUE;
5791
ec338859
AM
5792 elf_section_data (sec)->local_dynrel = NULL;
5793
411e1bfb 5794 htab = ppc_hash_table (info);
4dfe6ac6
NC
5795 if (htab == NULL)
5796 return FALSE;
5797
0ffa91dd 5798 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5799 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5800 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM
5801
5802 relend = relocs + sec->reloc_count;
5803 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM
5804 {
5805 unsigned long r_symndx;
04c9666a 5806 enum elf_ppc64_reloc_type r_type;
58ac9f71 5807 struct elf_link_hash_entry *h = NULL;
f961d9dd 5808 unsigned char tls_type = 0;
5bd4f169 5809
a33d1f77 5810 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5811 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM
5812 if (r_symndx >= symtab_hdr->sh_info)
5813 {
5814 struct ppc_link_hash_entry *eh;
5815 struct ppc_dyn_relocs **pp;
5816 struct ppc_dyn_relocs *p;
5817
5818 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5819 h = elf_follow_link (h);
58ac9f71
AM
5820 eh = (struct ppc_link_hash_entry *) h;
5821
5822 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5823 if (p->sec == sec)
5824 {
5825 /* Everything must go for SEC. */
5826 *pp = p->next;
5827 break;
5828 }
5829 }
5830
e054468f
AM
5831 if (is_branch_reloc (r_type))
5832 {
5833 struct plt_entry **ifunc = NULL;
5834 if (h != NULL)
5835 {
5836 if (h->type == STT_GNU_IFUNC)
5837 ifunc = &h->plt.plist;
5838 }
5839 else if (local_got_ents != NULL)
5840 {
5841 struct plt_entry **local_plt = (struct plt_entry **)
5842 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5843 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM
5844 (local_plt + symtab_hdr->sh_info);
5845 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5846 ifunc = local_plt + r_symndx;
5847 }
5848 if (ifunc != NULL)
5849 {
5850 struct plt_entry *ent;
5851
5852 for (ent = *ifunc; ent != NULL; ent = ent->next)
5853 if (ent->addend == rel->r_addend)
5854 break;
5855 if (ent == NULL)
5856 abort ();
5857 if (ent->plt.refcount > 0)
5858 ent->plt.refcount -= 1;
5859 continue;
5860 }
5861 }
5862
a33d1f77
AM
5863 switch (r_type)
5864 {
411e1bfb
AM
5865 case R_PPC64_GOT_TLSLD16:
5866 case R_PPC64_GOT_TLSLD16_LO:
5867 case R_PPC64_GOT_TLSLD16_HI:
5868 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5869 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5870 goto dogot;
5871
5872 case R_PPC64_GOT_TLSGD16:
5873 case R_PPC64_GOT_TLSGD16_LO:
5874 case R_PPC64_GOT_TLSGD16_HI:
5875 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5876 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5877 goto dogot;
5878
5879 case R_PPC64_GOT_TPREL16_DS:
5880 case R_PPC64_GOT_TPREL16_LO_DS:
5881 case R_PPC64_GOT_TPREL16_HI:
5882 case R_PPC64_GOT_TPREL16_HA:
5883 tls_type = TLS_TLS | TLS_TPREL;
5884 goto dogot;
5885
5886 case R_PPC64_GOT_DTPREL16_DS:
5887 case R_PPC64_GOT_DTPREL16_LO_DS:
5888 case R_PPC64_GOT_DTPREL16_HI:
5889 case R_PPC64_GOT_DTPREL16_HA:
5890 tls_type = TLS_TLS | TLS_DTPREL;
5891 goto dogot;
5892
a33d1f77
AM
5893 case R_PPC64_GOT16:
5894 case R_PPC64_GOT16_DS:
5895 case R_PPC64_GOT16_HA:
5896 case R_PPC64_GOT16_HI:
5897 case R_PPC64_GOT16_LO:
5898 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM
5899 dogot:
5900 {
5901 struct got_entry *ent;
5902
58ac9f71
AM
5903 if (h != NULL)
5904 ent = h->got.glist;
411e1bfb
AM
5905 else
5906 ent = local_got_ents[r_symndx];
5907
5908 for (; ent != NULL; ent = ent->next)
5909 if (ent->addend == rel->r_addend
e717da7e 5910 && ent->owner == abfd
411e1bfb
AM
5911 && ent->tls_type == tls_type)
5912 break;
5913 if (ent == NULL)
5914 abort ();
5915 if (ent->got.refcount > 0)
5916 ent->got.refcount -= 1;
5917 }
a33d1f77 5918 break;
65f38f15 5919
a33d1f77
AM
5920 case R_PPC64_PLT16_HA:
5921 case R_PPC64_PLT16_HI:
5922 case R_PPC64_PLT16_LO:
5923 case R_PPC64_PLT32:
5924 case R_PPC64_PLT64:
721956f4
AM
5925 case R_PPC64_REL14:
5926 case R_PPC64_REL14_BRNTAKEN:
5927 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5928 case R_PPC64_REL24:
58ac9f71 5929 if (h != NULL)
5d1634d7 5930 {
411e1bfb
AM
5931 struct plt_entry *ent;
5932
411e1bfb
AM
5933 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5934 if (ent->addend == rel->r_addend)
5935 break;
7c6c1722 5936 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 5937 ent->plt.refcount -= 1;
5d1634d7 5938 }
e86ce104 5939 break;
5d1634d7 5940
a33d1f77
AM
5941 default:
5942 break;
5943 }
5944 }
b34976b6 5945 return TRUE;
5bd4f169
AM
5946}
5947
deb0e272
AM
5948/* The maximum size of .sfpr. */
5949#define SFPR_MAX (218*4)
5950
5951struct sfpr_def_parms
5952{
699733f6
AM
5953 const char name[12];
5954 unsigned char lo, hi;
deb0e272
AM
5955 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5956 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5957};
5958
5959/* Auto-generate _save*, _rest* functions in .sfpr. */
5960
4dfe6ac6 5961static bfd_boolean
deb0e272
AM
5962sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5963{
5964 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5965 unsigned int i;
5966 size_t len = strlen (parm->name);
5967 bfd_boolean writing = FALSE;
699733f6 5968 char sym[16];
deb0e272 5969
4dfe6ac6
NC
5970 if (htab == NULL)
5971 return FALSE;
5972
deb0e272
AM
5973 memcpy (sym, parm->name, len);
5974 sym[len + 2] = 0;
5975
5976 for (i = parm->lo; i <= parm->hi; i++)
5977 {
5978 struct elf_link_hash_entry *h;
5979
5980 sym[len + 0] = i / 10 + '0';
5981 sym[len + 1] = i % 10 + '0';
5982 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5983 if (h != NULL
f5385ebf 5984 && !h->def_regular)
deb0e272
AM
5985 {
5986 h->root.type = bfd_link_hash_defined;
5987 h->root.u.def.section = htab->sfpr;
5988 h->root.u.def.value = htab->sfpr->size;
5989 h->type = STT_FUNC;
f5385ebf 5990 h->def_regular = 1;
deb0e272
AM
5991 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5992 writing = TRUE;
5993 if (htab->sfpr->contents == NULL)
5994 {
5995 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5996 if (htab->sfpr->contents == NULL)
5997 return FALSE;
5998 }
5999 }
6000 if (writing)
6001 {
6002 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6003 if (i != parm->hi)
6004 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6005 else
6006 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6007 htab->sfpr->size = p - htab->sfpr->contents;
6008 }
6009 }
6010
6011 return TRUE;
6012}
6013
6014static bfd_byte *
6015savegpr0 (bfd *abfd, bfd_byte *p, int r)
6016{
6017 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6018 return p + 4;
6019}
6020
6021static bfd_byte *
6022savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6023{
6024 p = savegpr0 (abfd, p, r);
6025 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6026 p = p + 4;
6027 bfd_put_32 (abfd, BLR, p);
6028 return p + 4;
6029}
6030
6031static bfd_byte *
6032restgpr0 (bfd *abfd, bfd_byte *p, int r)
6033{
6034 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6035 return p + 4;
6036}
6037
6038static bfd_byte *
6039restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6040{
6041 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6042 p = p + 4;
6043 p = restgpr0 (abfd, p, r);
6044 bfd_put_32 (abfd, MTLR_R0, p);
6045 p = p + 4;
6046 if (r == 29)
6047 {
6048 p = restgpr0 (abfd, p, 30);
6049 p = restgpr0 (abfd, p, 31);
6050 }
6051 bfd_put_32 (abfd, BLR, p);
6052 return p + 4;
6053}
6054
6055static bfd_byte *
6056savegpr1 (bfd *abfd, bfd_byte *p, int r)
6057{
6058 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6059 return p + 4;
6060}
6061
6062static bfd_byte *
6063savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6064{
6065 p = savegpr1 (abfd, p, r);
6066 bfd_put_32 (abfd, BLR, p);
6067 return p + 4;
6068}
6069
6070static bfd_byte *
6071restgpr1 (bfd *abfd, bfd_byte *p, int r)
6072{
6073 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6074 return p + 4;
6075}
6076
6077static bfd_byte *
6078restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6079{
6080 p = restgpr1 (abfd, p, r);
6081 bfd_put_32 (abfd, BLR, p);
6082 return p + 4;
6083}
6084
6085static bfd_byte *
6086savefpr (bfd *abfd, bfd_byte *p, int r)
6087{
6088 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6089 return p + 4;
6090}
6091
6092static bfd_byte *
6093savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6094{
6095 p = savefpr (abfd, p, r);
6096 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6097 p = p + 4;
6098 bfd_put_32 (abfd, BLR, p);
6099 return p + 4;
6100}
6101
6102static bfd_byte *
6103restfpr (bfd *abfd, bfd_byte *p, int r)
6104{
6105 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6106 return p + 4;
6107}
6108
6109static bfd_byte *
6110restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6111{
6112 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6113 p = p + 4;
6114 p = restfpr (abfd, p, r);
6115 bfd_put_32 (abfd, MTLR_R0, p);
6116 p = p + 4;
6117 if (r == 29)
6118 {
6119 p = restfpr (abfd, p, 30);
6120 p = restfpr (abfd, p, 31);
6121 }
6122 bfd_put_32 (abfd, BLR, p);
6123 return p + 4;
6124}
6125
6126static bfd_byte *
6127savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6128{
6129 p = savefpr (abfd, p, r);
6130 bfd_put_32 (abfd, BLR, p);
6131 return p + 4;
6132}
6133
6134static bfd_byte *
6135restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6136{
6137 p = restfpr (abfd, p, r);
6138 bfd_put_32 (abfd, BLR, p);
6139 return p + 4;
6140}
6141
6142static bfd_byte *
6143savevr (bfd *abfd, bfd_byte *p, int r)
6144{
6145 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6146 p = p + 4;
6147 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6148 return p + 4;
6149}
6150
6151static bfd_byte *
6152savevr_tail (bfd *abfd, bfd_byte *p, int r)
6153{
6154 p = savevr (abfd, p, r);
6155 bfd_put_32 (abfd, BLR, p);
6156 return p + 4;
6157}
6158
6159static bfd_byte *
6160restvr (bfd *abfd, bfd_byte *p, int r)
6161{
6162 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6163 p = p + 4;
6164 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6165 return p + 4;
6166}
6167
6168static bfd_byte *
6169restvr_tail (bfd *abfd, bfd_byte *p, int r)
6170{
6171 p = restvr (abfd, p, r);
6172 bfd_put_32 (abfd, BLR, p);
6173 return p + 4;
6174}
6175
e86ce104
AM
6176/* Called via elf_link_hash_traverse to transfer dynamic linking
6177 information on function code symbol entries to their corresponding
6178 function descriptor symbol entries. */
deb0e272 6179
b34976b6 6180static bfd_boolean
4ce794b7 6181func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6182{
e86ce104 6183 struct bfd_link_info *info;
65f38f15 6184 struct ppc_link_hash_table *htab;
411e1bfb 6185 struct plt_entry *ent;
50bc7936
AM
6186 struct ppc_link_hash_entry *fh;
6187 struct ppc_link_hash_entry *fdh;
6188 bfd_boolean force_local;
5bd4f169 6189
50bc7936
AM
6190 fh = (struct ppc_link_hash_entry *) h;
6191 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6192 return TRUE;
e86ce104 6193
50bc7936
AM
6194 if (fh->elf.root.type == bfd_link_hash_warning)
6195 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 6196
4ce794b7 6197 info = inf;
65f38f15 6198 htab = ppc_hash_table (info);
4dfe6ac6
NC
6199 if (htab == NULL)
6200 return FALSE;
5bd4f169 6201
c09bdfe5
AM
6202 /* Resolve undefined references to dot-symbols as the value
6203 in the function descriptor, if we have one in a regular object.
6204 This is to satisfy cases like ".quad .foo". Calls to functions
6205 in dynamic objects are handled elsewhere. */
6206 if (fh->elf.root.type == bfd_link_hash_undefweak
6207 && fh->was_undefined
b31867b6
AM
6208 && (fdh = defined_func_desc (fh)) != NULL
6209 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6210 && opd_entry_value (fdh->elf.root.u.def.section,
6211 fdh->elf.root.u.def.value,
c09bdfe5
AM
6212 &fh->elf.root.u.def.section,
6213 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6214 {
b31867b6 6215 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6216 fh->elf.forced_local = 1;
b31867b6
AM
6217 fh->elf.def_regular = fdh->elf.def_regular;
6218 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM
6219 }
6220
e86ce104
AM
6221 /* If this is a function code symbol, transfer dynamic linking
6222 information to the function descriptor symbol. */
50bc7936 6223 if (!fh->is_func)
b34976b6 6224 return TRUE;
e86ce104 6225
50bc7936 6226 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
6227 if (ent->plt.refcount > 0)
6228 break;
50bc7936
AM
6229 if (ent == NULL
6230 || fh->elf.root.root.string[0] != '.'
6231 || fh->elf.root.root.string[1] == '\0')
6232 return TRUE;
5bd4f169 6233
50bc7936
AM
6234 /* Find the corresponding function descriptor symbol. Create it
6235 as undefined if necessary. */
5bd4f169 6236
b31867b6 6237 fdh = lookup_fdh (fh, htab);
50bc7936 6238 if (fdh == NULL
df131623 6239 && !info->executable
50bc7936
AM
6240 && (fh->elf.root.type == bfd_link_hash_undefined
6241 || fh->elf.root.type == bfd_link_hash_undefweak))
6242 {
908b32fc 6243 fdh = make_fdh (info, fh);
bb700d78
AM
6244 if (fdh == NULL)
6245 return FALSE;
50bc7936 6246 }
648cca2c 6247
908b32fc 6248 /* Fake function descriptors are made undefweak. If the function
433817dd
AM
6249 code symbol is strong undefined, make the fake sym the same.
6250 If the function code symbol is defined, then force the fake
6251 descriptor local; We can't support overriding of symbols in a
6252 shared library on a fake descriptor. */
908b32fc
AM
6253
6254 if (fdh != NULL
6255 && fdh->fake
433817dd 6256 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6257 {
433817dd
AM
6258 if (fh->elf.root.type == bfd_link_hash_undefined)
6259 {
6260 fdh->elf.root.type = bfd_link_hash_undefined;
6261 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6262 }
6263 else if (fh->elf.root.type == bfd_link_hash_defined
6264 || fh->elf.root.type == bfd_link_hash_defweak)
6265 {
6266 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6267 }
908b32fc
AM
6268 }
6269
50bc7936 6270 if (fdh != NULL
f5385ebf 6271 && !fdh->elf.forced_local
df131623 6272 && (!info->executable
f5385ebf
AM
6273 || fdh->elf.def_dynamic
6274 || fdh->elf.ref_dynamic
50bc7936
AM
6275 || (fdh->elf.root.type == bfd_link_hash_undefweak
6276 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6277 {
6278 if (fdh->elf.dynindx == -1)
c152c796 6279 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6280 return FALSE;
f5385ebf
AM
6281 fdh->elf.ref_regular |= fh->elf.ref_regular;
6282 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6283 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6284 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6285 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6286 {
40d16e0b 6287 move_plt_plist (fh, fdh);
f5385ebf 6288 fdh->elf.needs_plt = 1;
e86ce104 6289 }
50bc7936 6290 fdh->is_func_descriptor = 1;
34814b9f
AM
6291 fdh->oh = fh;
6292 fh->oh = fdh;
e86ce104
AM
6293 }
6294
50bc7936
AM
6295 /* Now that the info is on the function descriptor, clear the
6296 function code sym info. Any function code syms for which we
6297 don't have a definition in a regular file, we force local.
6298 This prevents a shared library from exporting syms that have
6299 been imported from another library. Function code syms that
6300 are really in the library we must leave global to prevent the
6301 linker dragging in a definition from a static library. */
93f3fa99
AM
6302 force_local = (!fh->elf.def_regular
6303 || fdh == NULL
6304 || !fdh->elf.def_regular
6305 || fdh->elf.forced_local);
50bc7936
AM
6306 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6307
b34976b6 6308 return TRUE;
e86ce104 6309}
40b8271b 6310
e86ce104 6311/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM
6312 this hook to a) provide some gcc support functions, and b) transfer
6313 dynamic linking information gathered so far on function code symbol
6314 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6315
b34976b6 6316static bfd_boolean
4ce794b7
AM
6317ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6318 struct bfd_link_info *info)
e86ce104
AM
6319{
6320 struct ppc_link_hash_table *htab;
82bd7b59 6321 unsigned int i;
deb0e272
AM
6322 const struct sfpr_def_parms funcs[] =
6323 {
6324 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6325 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6326 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6327 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6328 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6329 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6330 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6331 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6332 { "._savef", 14, 31, savefpr, savefpr1_tail },
6333 { "._restf", 14, 31, restfpr, restfpr1_tail },
6334 { "_savevr_", 20, 31, savevr, savevr_tail },
6335 { "_restvr_", 20, 31, restvr, restvr_tail }
6336 };
e86ce104
AM
6337
6338 htab = ppc_hash_table (info);
4dfe6ac6
NC
6339 if (htab == NULL)
6340 return FALSE;
6341
82bd7b59
AM
6342 if (htab->sfpr == NULL)
6343 /* We don't have any relocs. */
b34976b6 6344 return TRUE;
82bd7b59 6345
deb0e272
AM
6346 /* Provide any missing _save* and _rest* functions. */
6347 htab->sfpr->size = 0;
6348 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6349 if (!sfpr_define (info, &funcs[i]))
6350 return FALSE;
82bd7b59 6351
4ce794b7 6352 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6353
eea6121a 6354 if (htab->sfpr->size == 0)
8423293d 6355 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6356
b34976b6 6357 return TRUE;
e86ce104
AM
6358}
6359
6360/* Adjust a symbol defined by a dynamic object and referenced by a
6361 regular object. The current definition is in some section of the
6362 dynamic object, but we're not including those sections. We have to
6363 change the definition to something the rest of the link can
6364 understand. */
6365
b34976b6 6366static bfd_boolean
4ce794b7
AM
6367ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6368 struct elf_link_hash_entry *h)
e86ce104
AM
6369{
6370 struct ppc_link_hash_table *htab;
e86ce104 6371 asection *s;
e86ce104
AM
6372
6373 htab = ppc_hash_table (info);
4dfe6ac6
NC
6374 if (htab == NULL)
6375 return FALSE;
e86ce104
AM
6376
6377 /* Deal with function syms. */
6378 if (h->type == STT_FUNC
e054468f 6379 || h->type == STT_GNU_IFUNC
f5385ebf 6380 || h->needs_plt)
e86ce104
AM
6381 {
6382 /* Clear procedure linkage table information for any symbol that
6383 won't need a .plt entry. */
411e1bfb
AM
6384 struct plt_entry *ent;
6385 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6386 if (ent->plt.refcount > 0)
6387 break;
8387904d 6388 if (ent == NULL
e054468f
AM
6389 || (h->type != STT_GNU_IFUNC
6390 && (SYMBOL_CALLS_LOCAL (info, h)
6391 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6392 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 6393 {
411e1bfb 6394 h->plt.plist = NULL;
f5385ebf 6395 h->needs_plt = 0;
40b8271b 6396 }
5bd4f169 6397 }
bbd7ec4a 6398 else
411e1bfb 6399 h->plt.plist = NULL;
5bd4f169
AM
6400
6401 /* If this is a weak symbol, and there is a real definition, the
6402 processor independent code will have arranged for us to see the
6403 real definition first, and we can just use the same value. */
f6e332e6 6404 if (h->u.weakdef != NULL)
5bd4f169 6405 {
f6e332e6
AM
6406 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6407 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6408 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6409 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 6410 if (ELIMINATE_COPY_RELOCS)
f6e332e6 6411 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 6412 return TRUE;
5bd4f169
AM
6413 }
6414
5bd4f169
AM
6415 /* If we are creating a shared library, we must presume that the
6416 only references to the symbol are via the global offset table.
6417 For such cases we need not do anything here; the relocations will
6418 be handled correctly by relocate_section. */
6419 if (info->shared)
b34976b6 6420 return TRUE;
5bd4f169 6421
65f38f15
AM
6422 /* If there are no references to this symbol that do not use the
6423 GOT, we don't need to generate a copy reloc. */
f5385ebf 6424 if (!h->non_got_ref)
b34976b6 6425 return TRUE;
65f38f15 6426
b186458a
JJ
6427 /* Don't generate a copy reloc for symbols defined in the executable. */
6428 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6429 return TRUE;
6430
f4656909 6431 if (ELIMINATE_COPY_RELOCS)
65f38f15 6432 {
f4656909
AM
6433 struct ppc_link_hash_entry * eh;
6434 struct ppc_dyn_relocs *p;
65f38f15 6435
f4656909
AM
6436 eh = (struct ppc_link_hash_entry *) h;
6437 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6438 {
6439 s = p->sec->output_section;
6440 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6441 break;
6442 }
6443
6444 /* If we didn't find any dynamic relocs in read-only sections, then
6445 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6446 if (p == NULL)
6447 {
f5385ebf 6448 h->non_got_ref = 0;
f4656909
AM
6449 return TRUE;
6450 }
65f38f15
AM
6451 }
6452
5d35169e 6453 if (h->plt.plist != NULL)
97b639ba
AM
6454 {
6455 /* We should never get here, but unfortunately there are versions
6456 of gcc out there that improperly (for this ABI) put initialized
6457 function pointers, vtable refs and suchlike in read-only
6458 sections. Allow them to proceed, but warn that this might
6459 break at runtime. */
6460 (*_bfd_error_handler)
6461 (_("copy reloc against `%s' requires lazy plt linking; "
6462 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6463 h->root.root.string);
6464 }
5d35169e
AM
6465
6466 /* This is a reference to a symbol defined by a dynamic object which
6467 is not a function. */
6468
909272ee
AM
6469 if (h->size == 0)
6470 {
6471 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6472 h->root.root.string);
6473 return TRUE;
6474 }
6475
5bd4f169
AM
6476 /* We must allocate the symbol in our .dynbss section, which will
6477 become part of the .bss section of the executable. There will be
6478 an entry for this symbol in the .dynsym section. The dynamic
6479 object will contain position independent code, so all references
6480 from the dynamic object to this symbol will go through the global
6481 offset table. The dynamic linker will use the .dynsym entry to
6482 determine the address it must put in the global offset table, so
6483 both the dynamic object and the regular object will refer to the
6484 same memory location for the variable. */
5bd4f169 6485
04c9666a
AM
6486 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6487 to copy the initial value out of the dynamic object and into the
5bd4f169
AM
6488 runtime process image. We need to remember the offset into the
6489 .rela.bss section we are going to use. */
6490 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6491 {
eea6121a 6492 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 6493 h->needs_copy = 1;
5bd4f169
AM
6494 }
6495
4ce794b7 6496 s = htab->dynbss;
5bd4f169 6497
027297b7 6498 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM
6499}
6500
e86ce104
AM
6501/* If given a function descriptor symbol, hide both the function code
6502 sym and the descriptor. */
6503static void
4ce794b7
AM
6504ppc64_elf_hide_symbol (struct bfd_link_info *info,
6505 struct elf_link_hash_entry *h,
6506 bfd_boolean force_local)
e86ce104 6507{
34814b9f 6508 struct ppc_link_hash_entry *eh;
e86ce104
AM
6509 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6510
34814b9f
AM
6511 eh = (struct ppc_link_hash_entry *) h;
6512 if (eh->is_func_descriptor)
e86ce104 6513 {
34814b9f 6514 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 6515
721956f4 6516 if (fh == NULL)
d1329ca3
AM
6517 {
6518 const char *p, *q;
6519 struct ppc_link_hash_table *htab;
6520 char save;
6521
6522 /* We aren't supposed to use alloca in BFD because on
6523 systems which do not have alloca the version in libiberty
6524 calls xmalloc, which might cause the program to crash
6525 when it runs out of memory. This function doesn't have a
6526 return status, so there's no way to gracefully return an
6527 error. So cheat. We know that string[-1] can be safely
34814b9f
AM
6528 accessed; It's either a string in an ELF string table,
6529 or allocated in an objalloc structure. */
d1329ca3 6530
34814b9f 6531 p = eh->elf.root.root.string - 1;
d1329ca3
AM
6532 save = *p;
6533 *(char *) p = '.';
6534 htab = ppc_hash_table (info);
4dfe6ac6
NC
6535 if (htab == NULL)
6536 return;
6537
34814b9f
AM
6538 fh = (struct ppc_link_hash_entry *)
6539 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
6540 *(char *) p = save;
6541
6542 /* Unfortunately, if it so happens that the string we were
6543 looking for was allocated immediately before this string,
6544 then we overwrote the string terminator. That's the only
6545 reason the lookup should fail. */
6546 if (fh == NULL)
6547 {
34814b9f
AM
6548 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6549 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 6550 --q, --p;
34814b9f
AM
6551 if (q < eh->elf.root.root.string && *p == '.')
6552 fh = (struct ppc_link_hash_entry *)
6553 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
6554 }
6555 if (fh != NULL)
6556 {
34814b9f
AM
6557 eh->oh = fh;
6558 fh->oh = eh;
d1329ca3
AM
6559 }
6560 }
e86ce104 6561 if (fh != NULL)
34814b9f 6562 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM
6563 }
6564}
6565
411e1bfb 6566static bfd_boolean
8843416a
AM
6567get_sym_h (struct elf_link_hash_entry **hp,
6568 Elf_Internal_Sym **symp,
6569 asection **symsecp,
f961d9dd 6570 unsigned char **tls_maskp,
8843416a
AM
6571 Elf_Internal_Sym **locsymsp,
6572 unsigned long r_symndx,
6573 bfd *ibfd)
411e1bfb 6574{
0ffa91dd 6575 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM
6576
6577 if (r_symndx >= symtab_hdr->sh_info)
6578 {
6579 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6580 struct elf_link_hash_entry *h;
6581
6582 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6583 h = elf_follow_link (h);
411e1bfb
AM
6584
6585 if (hp != NULL)
6586 *hp = h;
6587
6588 if (symp != NULL)
6589 *symp = NULL;
6590
6591 if (symsecp != NULL)
6592 {
6593 asection *symsec = NULL;
6594 if (h->root.type == bfd_link_hash_defined
6595 || h->root.type == bfd_link_hash_defweak)
6596 symsec = h->root.u.def.section;
6597 *symsecp = symsec;
6598 }
6599
e7b938ca 6600 if (tls_maskp != NULL)
411e1bfb
AM
6601 {
6602 struct ppc_link_hash_entry *eh;
6603
6604 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6605 *tls_maskp = &eh->tls_mask;
411e1bfb
AM
6606 }
6607 }
6608 else
6609 {
6610 Elf_Internal_Sym *sym;
6611 Elf_Internal_Sym *locsyms = *locsymsp;
6612
6613 if (locsyms == NULL)
6614 {
6615 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6616 if (locsyms == NULL)
6617 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6618 symtab_hdr->sh_info,
6619 0, NULL, NULL, NULL);
6620 if (locsyms == NULL)
6621 return FALSE;
6622 *locsymsp = locsyms;
6623 }
6624 sym = locsyms + r_symndx;
6625
6626 if (hp != NULL)
6627 *hp = NULL;
6628
6629 if (symp != NULL)
6630 *symp = sym;
6631
6632 if (symsecp != NULL)
cb33740c 6633 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 6634
e7b938ca 6635 if (tls_maskp != NULL)
411e1bfb
AM
6636 {
6637 struct got_entry **lgot_ents;
f961d9dd 6638 unsigned char *tls_mask;
411e1bfb 6639
e7b938ca 6640 tls_mask = NULL;
411e1bfb
AM
6641 lgot_ents = elf_local_got_ents (ibfd);
6642 if (lgot_ents != NULL)
6643 {
e054468f
AM
6644 struct plt_entry **local_plt = (struct plt_entry **)
6645 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 6646 unsigned char *lgot_masks = (unsigned char *)
e054468f 6647 (local_plt + symtab_hdr->sh_info);
e7b938ca 6648 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6649 }
e7b938ca 6650 *tls_maskp = tls_mask;
411e1bfb
AM
6651 }
6652 }
6653 return TRUE;
6654}
6655
e7b938ca 6656/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6657 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6658 type suitable for optimization, and 1 otherwise. */
951fd09b
AM
6659
6660static int
f961d9dd 6661get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM
6662 unsigned long *toc_symndx,
6663 bfd_vma *toc_addend,
0d4792f7 6664 Elf_Internal_Sym **locsymsp,
3a71aa26
AM
6665 const Elf_Internal_Rela *rel,
6666 bfd *ibfd)
411e1bfb
AM
6667{
6668 unsigned long r_symndx;
0d4792f7 6669 int next_r;
411e1bfb
AM
6670 struct elf_link_hash_entry *h;
6671 Elf_Internal_Sym *sym;
6672 asection *sec;
6673 bfd_vma off;
6674
6675 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6676 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6677 return 0;
411e1bfb 6678
e7b938ca 6679 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6680 || sec == NULL
7c8fe5c4 6681 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6682 return 1;
411e1bfb
AM
6683
6684 /* Look inside a TOC section too. */
6685 if (h != NULL)
6686 {
6687 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6688 off = h->root.u.def.value;
6689 }
6690 else
6691 off = sym->st_value;
6692 off += rel->r_addend;
6693 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM
6694 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6695 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM
6696 if (toc_symndx != NULL)
6697 *toc_symndx = r_symndx;
3a71aa26
AM
6698 if (toc_addend != NULL)
6699 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6700 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6701 return 0;
0d4792f7
AM
6702 if ((h == NULL
6703 || ((h->root.type == bfd_link_hash_defined
6704 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6705 && !h->def_dynamic))
0d4792f7
AM
6706 && (next_r == -1 || next_r == -2))
6707 return 1 - next_r;
951fd09b 6708 return 1;
411e1bfb
AM
6709}
6710
754021d0 6711/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6712 code for the old ABI, these will already have been done. */
754021d0
AM
6713
6714static bfd_boolean
6715adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6716{
6717 struct ppc_link_hash_entry *eh;
6718 asection *sym_sec;
74f0fb50 6719 struct _opd_sec_data *opd;
754021d0
AM
6720
6721 if (h->root.type == bfd_link_hash_indirect)
6722 return TRUE;
6723
6724 if (h->root.type == bfd_link_hash_warning)
6725 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6726
6727 if (h->root.type != bfd_link_hash_defined
6728 && h->root.type != bfd_link_hash_defweak)
6729 return TRUE;
6730
6731 eh = (struct ppc_link_hash_entry *) h;
6732 if (eh->adjust_done)
6733 return TRUE;
6734
6735 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM
6736 opd = get_opd_info (sym_sec);
6737 if (opd != NULL && opd->adjust != NULL)
754021d0 6738 {
74f0fb50 6739 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM
6740 if (adjust == -1)
6741 {
6742 /* This entry has been deleted. */
b3fac117 6743 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM
6744 if (dsec == NULL)
6745 {
6746 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6747 if (elf_discarded_section (dsec))
6748 {
b3fac117 6749 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM
6750 break;
6751 }
6752 }
4025353c 6753 eh->elf.root.u.def.value = 0;
81688140 6754 eh->elf.root.u.def.section = dsec;
4025353c
AM
6755 }
6756 else
6757 eh->elf.root.u.def.value += adjust;
754021d0
AM
6758 eh->adjust_done = 1;
6759 }
6760 return TRUE;
6761}
6762
8c1d1bb8
AM
6763/* Handles decrementing dynamic reloc counts for the reloc specified by
6764 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6765 have already been determined. */
6766
6767static bfd_boolean
6768dec_dynrel_count (bfd_vma r_info,
6769 asection *sec,
6770 struct bfd_link_info *info,
6771 Elf_Internal_Sym **local_syms,
6772 struct elf_link_hash_entry *h,
6773 asection *sym_sec)
6774{
6775 enum elf_ppc64_reloc_type r_type;
6776 struct ppc_dyn_relocs *p;
6777 struct ppc_dyn_relocs **pp;
6778
6779 /* Can this reloc be dynamic? This switch, and later tests here
6780 should be kept in sync with the code in check_relocs. */
6781 r_type = ELF64_R_TYPE (r_info);
6782 switch (r_type)
6783 {
6784 default:
6785 return TRUE;
6786
6787 case R_PPC64_TPREL16:
6788 case R_PPC64_TPREL16_LO:
6789 case R_PPC64_TPREL16_HI:
6790 case R_PPC64_TPREL16_HA:
6791 case R_PPC64_TPREL16_DS:
6792 case R_PPC64_TPREL16_LO_DS:
6793 case R_PPC64_TPREL16_HIGHER:
6794 case R_PPC64_TPREL16_HIGHERA:
6795 case R_PPC64_TPREL16_HIGHEST:
6796 case R_PPC64_TPREL16_HIGHESTA:
6797 if (!info->shared)
6798 return TRUE;
6799
6800 case R_PPC64_TPREL64:
6801 case R_PPC64_DTPMOD64:
6802 case R_PPC64_DTPREL64:
6803 case R_PPC64_ADDR64:
6804 case R_PPC64_REL30:
6805 case R_PPC64_REL32:
6806 case R_PPC64_REL64:
6807 case R_PPC64_ADDR14:
6808 case R_PPC64_ADDR14_BRNTAKEN:
6809 case R_PPC64_ADDR14_BRTAKEN:
6810 case R_PPC64_ADDR16:
6811 case R_PPC64_ADDR16_DS:
6812 case R_PPC64_ADDR16_HA:
6813 case R_PPC64_ADDR16_HI:
6814 case R_PPC64_ADDR16_HIGHER:
6815 case R_PPC64_ADDR16_HIGHERA:
6816 case R_PPC64_ADDR16_HIGHEST:
6817 case R_PPC64_ADDR16_HIGHESTA:
6818 case R_PPC64_ADDR16_LO:
6819 case R_PPC64_ADDR16_LO_DS:
6820 case R_PPC64_ADDR24:
6821 case R_PPC64_ADDR32:
6822 case R_PPC64_UADDR16:
6823 case R_PPC64_UADDR32:
6824 case R_PPC64_UADDR64:
6825 case R_PPC64_TOC:
6826 break;
6827 }
6828
6829 if (local_syms != NULL)
6830 {
6831 unsigned long r_symndx;
6832 Elf_Internal_Sym *sym;
6833 bfd *ibfd = sec->owner;
6834
6835 r_symndx = ELF64_R_SYM (r_info);
6836 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6837 return FALSE;
6838 }
6839
6840 if ((info->shared
1d483afe 6841 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8
AM
6842 || (h != NULL
6843 && (!info->symbolic
6844 || h->root.type == bfd_link_hash_defweak
6845 || !h->def_regular))))
6846 || (ELIMINATE_COPY_RELOCS
6847 && !info->shared
6848 && h != NULL
6849 && (h->root.type == bfd_link_hash_defweak
6850 || !h->def_regular)))
6851 ;
6852 else
6853 return TRUE;
6854
6855 if (h != NULL)
6856 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6857 else
6edfbbad 6858 {
60124e18
AM
6859 if (sym_sec != NULL)
6860 {
6861 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6862 pp = (struct ppc_dyn_relocs **) vpp;
6863 }
6864 else
6865 {
6866 void *vpp = &elf_section_data (sec)->local_dynrel;
6867 pp = (struct ppc_dyn_relocs **) vpp;
6868 }
6869
6870 /* elf_gc_sweep may have already removed all dyn relocs associated
6871 with local syms for a given section. Don't report a dynreloc
6872 miscount. */
6873 if (*pp == NULL)
6874 return TRUE;
6edfbbad 6875 }
8c1d1bb8
AM
6876
6877 while ((p = *pp) != NULL)
6878 {
6879 if (p->sec == sec)
6880 {
1d483afe 6881 if (!must_be_dyn_reloc (info, r_type))
8c1d1bb8
AM
6882 p->pc_count -= 1;
6883 p->count -= 1;
6884 if (p->count == 0)
6885 *pp = p->next;
6886 return TRUE;
6887 }
6888 pp = &p->next;
6889 }
6890
6891 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6892 sec->owner, sec);
6893 bfd_set_error (bfd_error_bad_value);
6894 return FALSE;
6895}
6896
754021d0
AM
6897/* Remove unused Official Procedure Descriptor entries. Currently we
6898 only remove those associated with functions in discarded link-once
6899 sections, or weakly defined functions that have been overridden. It
6900 would be possible to remove many more entries for statically linked
6901 applications. */
6902
b34976b6 6903bfd_boolean
33c0ec9d 6904ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
1e2f5b6e
AM
6905{
6906 bfd *ibfd;
754021d0 6907 bfd_boolean some_edited = FALSE;
3f764659 6908 asection *need_pad = NULL;
1e2f5b6e 6909
411e1bfb 6910 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM
6911 {
6912 asection *sec;
6913 Elf_Internal_Rela *relstart, *rel, *relend;
6914 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6915 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM
6916 struct elf_link_hash_entry **sym_hashes;
6917 bfd_vma offset;
74f0fb50 6918 struct _opd_sec_data *opd;
3f764659
JJ
6919 bfd_boolean need_edit, add_aux_fields;
6920 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM
6921
6922 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6923 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM
6924 continue;
6925
4b85d634
AM
6926 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6927 continue;
6928
1e2f5b6e
AM
6929 if (sec->output_section == bfd_abs_section_ptr)
6930 continue;
6931
6932 /* Look through the section relocs. */
6933 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6934 continue;
6935
6cdc0ccc 6936 local_syms = NULL;
0ffa91dd 6937 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM
6938 sym_hashes = elf_sym_hashes (ibfd);
6939
6940 /* Read the relocations. */
4ce794b7 6941 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6942 info->keep_memory);
1e2f5b6e 6943 if (relstart == NULL)
b34976b6 6944 return FALSE;
1e2f5b6e
AM
6945
6946 /* First run through the relocs to check they are sane, and to
6947 determine whether we need to edit this opd section. */
b34976b6 6948 need_edit = FALSE;
3f764659 6949 need_pad = sec;
1e2f5b6e
AM
6950 offset = 0;
6951 relend = relstart + sec->reloc_count;
50bc7936 6952 for (rel = relstart; rel < relend; )
1e2f5b6e 6953 {
04c9666a 6954 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM
6955 unsigned long r_symndx;
6956 asection *sym_sec;
6957 struct elf_link_hash_entry *h;
6958 Elf_Internal_Sym *sym;
6959
3f764659 6960 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM
6961 only interested in the reloc pointing to a function entry
6962 point. */
50bc7936
AM
6963 if (rel->r_offset != offset
6964 || rel + 1 >= relend
6965 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM
6966 {
6967 /* If someone messes with .opd alignment then after a
6968 "ld -r" we might have padding in the middle of .opd.
6969 Also, there's nothing to prevent someone putting
6970 something silly in .opd with the assembler. No .opd
b34976b6 6971 optimization for them! */
3f764659 6972 broken_opd:
1e2f5b6e 6973 (*_bfd_error_handler)
d003868e 6974 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6975 need_edit = FALSE;
1e2f5b6e
AM
6976 break;
6977 }
6978
50bc7936
AM
6979 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6980 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6981 {
6982 (*_bfd_error_handler)
d003868e
AM
6983 (_("%B: unexpected reloc type %u in .opd section"),
6984 ibfd, r_type);
50bc7936
AM
6985 need_edit = FALSE;
6986 break;
6987 }
6988
1e2f5b6e 6989 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM
6990 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6991 r_symndx, ibfd))
50bc7936 6992 goto error_ret;
1e2f5b6e
AM
6993
6994 if (sym_sec == NULL || sym_sec->owner == NULL)
6995 {
411e1bfb
AM
6996 const char *sym_name;
6997 if (h != NULL)
6998 sym_name = h->root.root.string;
6999 else
26c61ae5
L
7000 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7001 sym_sec);
411e1bfb 7002
1e2f5b6e 7003 (*_bfd_error_handler)
d003868e
AM
7004 (_("%B: undefined sym `%s' in .opd section"),
7005 ibfd, sym_name);
b34976b6 7006 need_edit = FALSE;
1e2f5b6e
AM
7007 break;
7008 }
7009
51020317
AM
7010 /* opd entries are always for functions defined in the
7011 current input bfd. If the symbol isn't defined in the
7012 input bfd, then we won't be using the function in this
7013 bfd; It must be defined in a linkonce section in another
7014 bfd, or is weak. It's also possible that we are
7015 discarding the function due to a linker script /DISCARD/,
7016 which we test for via the output_section. */
7017 if (sym_sec->owner != ibfd
7018 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7019 need_edit = TRUE;
1e2f5b6e 7020
50bc7936 7021 rel += 2;
3f764659
JJ
7022 if (rel == relend
7023 || (rel + 1 == relend && rel->r_offset == offset + 16))
7024 {
7025 if (sec->size == offset + 24)
7026 {
7027 need_pad = NULL;
7028 break;
7029 }
7030 if (rel == relend && sec->size == offset + 16)
7031 {
7032 cnt_16b++;
7033 break;
7034 }
7035 goto broken_opd;
7036 }
7037
7038 if (rel->r_offset == offset + 24)
7039 offset += 24;
7040 else if (rel->r_offset != offset + 16)
7041 goto broken_opd;
7042 else if (rel + 1 < relend
7043 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7044 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7045 {
7046 offset += 16;
7047 cnt_16b++;
7048 }
7049 else if (rel + 2 < relend
7050 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7051 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7052 {
7053 offset += 24;
7054 rel += 1;
7055 }
7056 else
7057 goto broken_opd;
1e2f5b6e
AM
7058 }
7059
3f764659
JJ
7060 add_aux_fields = non_overlapping && cnt_16b > 0;
7061
7062 if (need_edit || add_aux_fields)
1e2f5b6e
AM
7063 {
7064 Elf_Internal_Rela *write_rel;
7065 bfd_byte *rptr, *wptr;
983bddc8 7066 bfd_byte *new_contents;
b34976b6 7067 bfd_boolean skip;
3f764659 7068 long opd_ent_size;
74f0fb50
AM
7069 bfd_size_type amt;
7070
983bddc8 7071 new_contents = NULL;
74f0fb50
AM
7072 amt = sec->size * sizeof (long) / 8;
7073 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7074 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM
7075 if (opd->adjust == NULL)
7076 return FALSE;
7077 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM
7078
7079 /* This seems a waste of time as input .opd sections are all
7080 zeros as generated by gcc, but I suppose there's no reason
7081 this will always be so. We might start putting something in
7082 the third word of .opd entries. */
7083 if ((sec->flags & SEC_IN_MEMORY) == 0)
7084 {
eea6121a
AM
7085 bfd_byte *loc;
7086 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7087 {
eea6121a
AM
7088 if (loc != NULL)
7089 free (loc);
50bc7936 7090 error_ret:
6cdc0ccc
AM
7091 if (local_syms != NULL
7092 && symtab_hdr->contents != (unsigned char *) local_syms)
7093 free (local_syms);
6cdc0ccc
AM
7094 if (elf_section_data (sec)->relocs != relstart)
7095 free (relstart);
b34976b6 7096 return FALSE;
6cdc0ccc 7097 }
1e2f5b6e
AM
7098 sec->contents = loc;
7099 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7100 }
7101
7102 elf_section_data (sec)->relocs = relstart;
7103
3f764659 7104 new_contents = sec->contents;
3f764659
JJ
7105 if (add_aux_fields)
7106 {
7107 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7108 if (new_contents == NULL)
7109 return FALSE;
7110 need_pad = FALSE;
3f764659 7111 }
b4f4e59f
AM
7112 wptr = new_contents;
7113 rptr = sec->contents;
3f764659 7114
1e2f5b6e 7115 write_rel = relstart;
b34976b6 7116 skip = FALSE;
1e2f5b6e 7117 offset = 0;
3f764659 7118 opd_ent_size = 0;
1e2f5b6e
AM
7119 for (rel = relstart; rel < relend; rel++)
7120 {
50bc7936
AM
7121 unsigned long r_symndx;
7122 asection *sym_sec;
7123 struct elf_link_hash_entry *h;
7124 Elf_Internal_Sym *sym;
7125
7126 r_symndx = ELF64_R_SYM (rel->r_info);
7127 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7128 r_symndx, ibfd))
50bc7936
AM
7129 goto error_ret;
7130
1e2f5b6e
AM
7131 if (rel->r_offset == offset)
7132 {
50bc7936 7133 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ
7134
7135 /* See if the .opd entry is full 24 byte or
7136 16 byte (with fd_aux entry overlapped with next
7137 fd_func). */
7138 opd_ent_size = 24;
7139 if ((rel + 2 == relend && sec->size == offset + 16)
7140 || (rel + 3 < relend
7141 && rel[2].r_offset == offset + 16
7142 && rel[3].r_offset == offset + 24
7143 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7144 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7145 opd_ent_size = 16;
7146
4025353c
AM
7147 if (h != NULL
7148 && h->root.root.string[0] == '.')
c4f68ce3 7149 {
4dfe6ac6
NC
7150 struct ppc_link_hash_table *htab;
7151
7152 htab = ppc_hash_table (info);
7153 if (htab != NULL)
7154 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7155 htab);
c4f68ce3
AM
7156 if (fdh != NULL
7157 && fdh->elf.root.type != bfd_link_hash_defined
7158 && fdh->elf.root.type != bfd_link_hash_defweak)
7159 fdh = NULL;
7160 }
1e2f5b6e 7161
51020317
AM
7162 skip = (sym_sec->owner != ibfd
7163 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM
7164 if (skip)
7165 {
4025353c 7166 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM
7167 {
7168 /* Arrange for the function descriptor sym
7169 to be dropped. */
d6fe2dc1
AM
7170 fdh->elf.root.u.def.value = 0;
7171 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7172 }
74f0fb50 7173 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM
7174 }
7175 else
1e2f5b6e
AM
7176 {
7177 /* We'll be keeping this opd entry. */
7178
4025353c 7179 if (fdh != NULL)
1e2f5b6e 7180 {
754021d0
AM
7181 /* Redefine the function descriptor symbol to
7182 this location in the opd section. It is
7183 necessary to update the value here rather
7184 than using an array of adjustments as we do
7185 for local symbols, because various places
7186 in the generic ELF code use the value
7187 stored in u.def.value. */
3f764659 7188 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7189 fdh->adjust_done = 1;
1e2f5b6e 7190 }
754021d0
AM
7191
7192 /* Local syms are a bit tricky. We could
7193 tweak them as they can be cached, but
7194 we'd need to look through the local syms
7195 for the function descriptor sym which we
7196 don't have at the moment. So keep an
7197 array of adjustments. */
74f0fb50 7198 opd->adjust[rel->r_offset / 8]
3f764659 7199 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM
7200
7201 if (wptr != rptr)
3f764659
JJ
7202 memcpy (wptr, rptr, opd_ent_size);
7203 wptr += opd_ent_size;
7204 if (add_aux_fields && opd_ent_size == 16)
7205 {
7206 memset (wptr, '\0', 8);
7207 wptr += 8;
7208 }
1e2f5b6e 7209 }
3f764659
JJ
7210 rptr += opd_ent_size;
7211 offset += opd_ent_size;
1e2f5b6e
AM
7212 }
7213
50bc7936
AM
7214 if (skip)
7215 {
60124e18
AM
7216 if (!NO_OPD_RELOCS
7217 && !info->relocatable
18d944df
AM
7218 && !dec_dynrel_count (rel->r_info, sec, info,
7219 NULL, h, sym_sec))
8c1d1bb8 7220 goto error_ret;
50bc7936
AM
7221 }
7222 else
1e2f5b6e 7223 {
50bc7936
AM
7224 /* We need to adjust any reloc offsets to point to the
7225 new opd entries. While we're at it, we may as well
7226 remove redundant relocs. */
74f0fb50 7227 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM
7228 if (write_rel != rel)
7229 memcpy (write_rel, rel, sizeof (*rel));
7230 ++write_rel;
7231 }
7232 }
7233
3f764659 7234 sec->size = wptr - new_contents;
1e2f5b6e 7235 sec->reloc_count = write_rel - relstart;
3f764659
JJ
7236 if (add_aux_fields)
7237 {
7238 free (sec->contents);
7239 sec->contents = new_contents;
7240 }
7241
05bf9422 7242 /* Fudge the header size too, as this is used later in
cdcf6e38
AM
7243 elf_bfd_final_link if we are emitting relocs. */
7244 elf_section_data (sec)->rel_hdr.sh_size
7245 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
7246 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 7247 some_edited = TRUE;
1e2f5b6e 7248 }
6cdc0ccc 7249 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7250 free (relstart);
6cdc0ccc 7251
411e1bfb
AM
7252 if (local_syms != NULL
7253 && symtab_hdr->contents != (unsigned char *) local_syms)
7254 {
7255 if (!info->keep_memory)
7256 free (local_syms);
7257 else
7258 symtab_hdr->contents = (unsigned char *) local_syms;
7259 }
7260 }
7261
754021d0
AM
7262 if (some_edited)
7263 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7264
3f764659
JJ
7265 /* If we are doing a final link and the last .opd entry is just 16 byte
7266 long, add a 8 byte padding after it. */
7267 if (need_pad != NULL && !info->relocatable)
7268 {
7269 bfd_byte *p;
7270
7271 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7272 {
7273 BFD_ASSERT (need_pad->size > 0);
7274
7275 p = bfd_malloc (need_pad->size + 8);
7276 if (p == NULL)
7277 return FALSE;
699733f6 7278
3f764659
JJ
7279 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7280 p, 0, need_pad->size))
7281 return FALSE;
7282
7283 need_pad->contents = p;
7284 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7285 }
7286 else
7287 {
7288 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7289 if (p == NULL)
7290 return FALSE;
7291
7292 need_pad->contents = p;
7293 }
7294
7295 memset (need_pad->contents + need_pad->size, 0, 8);
7296 need_pad->size += 8;
7297 }
7298
411e1bfb
AM
7299 return TRUE;
7300}
7301
e1918d23 7302/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7303
e1918d23 7304asection *
33c0ec9d
AM
7305ppc64_elf_tls_setup (struct bfd_link_info *info,
7306 int no_tls_get_addr_opt,
7307 int *no_multi_toc)
411e1bfb 7308{
411e1bfb
AM
7309 struct ppc_link_hash_table *htab;
7310
411e1bfb 7311 htab = ppc_hash_table (info);
4dfe6ac6
NC
7312 if (htab == NULL)
7313 return NULL;
7314
33c0ec9d
AM
7315 if (*no_multi_toc)
7316 htab->do_multi_toc = 0;
7317 else if (!htab->do_multi_toc)
7318 *no_multi_toc = 1;
7319
3a71aa26
AM
7320 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7321 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7322 FALSE, FALSE, TRUE));
a7f2871e
AM
7323 /* Move dynamic linking info to the function descriptor sym. */
7324 if (htab->tls_get_addr != NULL)
7325 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM
7326 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7327 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7328 FALSE, FALSE, TRUE));
a7f2871e
AM
7329 if (!no_tls_get_addr_opt)
7330 {
7331 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7332
7333 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7334 FALSE, FALSE, TRUE);
7335 if (opt != NULL)
7336 func_desc_adjust (opt, info);
7337 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7338 FALSE, FALSE, TRUE);
7339 if (opt_fd != NULL
7340 && (opt_fd->root.type == bfd_link_hash_defined
7341 || opt_fd->root.type == bfd_link_hash_defweak))
7342 {
7343 /* If glibc supports an optimized __tls_get_addr call stub,
7344 signalled by the presence of __tls_get_addr_opt, and we'll
7345 be calling __tls_get_addr via a plt call stub, then
7346 make __tls_get_addr point to __tls_get_addr_opt. */
7347 tga_fd = &htab->tls_get_addr_fd->elf;
7348 if (htab->elf.dynamic_sections_created
7349 && tga_fd != NULL
7350 && (tga_fd->type == STT_FUNC
7351 || tga_fd->needs_plt)
7352 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7353 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7354 && tga_fd->root.type == bfd_link_hash_undefweak)))
7355 {
7356 struct plt_entry *ent;
7357
7358 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7359 if (ent->plt.refcount > 0)
7360 break;
7361 if (ent != NULL)
7362 {
7363 tga_fd->root.type = bfd_link_hash_indirect;
7364 tga_fd->root.u.i.link = &opt_fd->root;
7365 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7366 if (opt_fd->dynindx != -1)
7367 {
7368 /* Use __tls_get_addr_opt in dynamic relocations. */
7369 opt_fd->dynindx = -1;
7370 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7371 opt_fd->dynstr_index);
7372 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7373 return FALSE;
7374 }
7375 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7376 tga = &htab->tls_get_addr->elf;
7377 if (opt != NULL && tga != NULL)
7378 {
7379 tga->root.type = bfd_link_hash_indirect;
7380 tga->root.u.i.link = &opt->root;
7381 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7382 _bfd_elf_link_hash_hide_symbol (info, opt,
7383 tga->forced_local);
7384 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7385 }
7386 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7387 htab->tls_get_addr_fd->is_func_descriptor = 1;
7388 if (htab->tls_get_addr != NULL)
7389 {
7390 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7391 htab->tls_get_addr->is_func = 1;
7392 }
7393 }
7394 }
7395 }
7396 else
7397 no_tls_get_addr_opt = TRUE;
7398 }
7399 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
33c0ec9d 7400 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 7401}
8387904d 7402
3a71aa26
AM
7403/* Return TRUE iff REL is a branch reloc with a global symbol matching
7404 HASH1 or HASH2. */
8387904d 7405
3a71aa26
AM
7406static bfd_boolean
7407branch_reloc_hash_match (const bfd *ibfd,
7408 const Elf_Internal_Rela *rel,
7409 const struct ppc_link_hash_entry *hash1,
7410 const struct ppc_link_hash_entry *hash2)
7411{
7412 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7413 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7414 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7415
e054468f 7416 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 7417 {
3a71aa26
AM
7418 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7419 struct elf_link_hash_entry *h;
8387904d 7420
3a71aa26 7421 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7422 h = elf_follow_link (h);
3a71aa26
AM
7423 if (h == &hash1->elf || h == &hash2->elf)
7424 return TRUE;
a48ebf4d 7425 }
3a71aa26 7426 return FALSE;
951fd09b 7427}
411e1bfb 7428
951fd09b
AM
7429/* Run through all the TLS relocs looking for optimization
7430 opportunities. The linker has been hacked (see ppc64elf.em) to do
7431 a preliminary section layout so that we know the TLS segment
7432 offsets. We can't optimize earlier because some optimizations need
7433 to know the tp offset, and we need to optimize before allocating
7434 dynamic relocations. */
7435
7436bfd_boolean
33c0ec9d 7437ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM
7438{
7439 bfd *ibfd;
7440 asection *sec;
7441 struct ppc_link_hash_table *htab;
102890f0 7442 int pass;
951fd09b 7443
1d483afe 7444 if (info->relocatable || !info->executable)
411e1bfb
AM
7445 return TRUE;
7446
951fd09b 7447 htab = ppc_hash_table (info);
4dfe6ac6
NC
7448 if (htab == NULL)
7449 return FALSE;
7450
411e1bfb
AM
7451 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7452 {
7453 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM
7454 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7455 unsigned char *toc_ref = NULL;
411e1bfb 7456
102890f0
AM
7457 /* Look at all the sections for this file. Make two passes over
7458 the relocs. On the first pass, mark toc entries involved
7459 with tls relocs, and check that tls relocs involved in
7460 setting up a tls_get_addr call are indeed followed by such a
7461 call. If they are not, exclude them from the optimizations
7462 done on the second pass. */
7463 for (pass = 0; pass < 2; ++pass)
7464 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7465 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7466 {
7467 Elf_Internal_Rela *relstart, *rel, *relend;
411e1bfb 7468
102890f0
AM
7469 /* Read the relocations. */
7470 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7471 info->keep_memory);
7472 if (relstart == NULL)
7473 return FALSE;
411e1bfb 7474
102890f0
AM
7475 relend = relstart + sec->reloc_count;
7476 for (rel = relstart; rel < relend; rel++)
7477 {
7478 enum elf_ppc64_reloc_type r_type;
7479 unsigned long r_symndx;
7480 struct elf_link_hash_entry *h;
7481 Elf_Internal_Sym *sym;
7482 asection *sym_sec;
f961d9dd
AM
7483 unsigned char *tls_mask;
7484 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM
7485 bfd_vma value;
7486 bfd_boolean ok_tprel, is_local;
7487 long toc_ref_index = 0;
7488 int expecting_tls_get_addr = 0;
411e1bfb 7489
102890f0
AM
7490 r_symndx = ELF64_R_SYM (rel->r_info);
7491 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7492 r_symndx, ibfd))
7493 {
7494 err_free_rel:
7495 if (elf_section_data (sec)->relocs != relstart)
7496 free (relstart);
7497 if (toc_ref != NULL)
7498 free (toc_ref);
7499 if (locsyms != NULL
0ffa91dd 7500 && (elf_symtab_hdr (ibfd).contents
102890f0
AM
7501 != (unsigned char *) locsyms))
7502 free (locsyms);
7503 return FALSE;
7504 }
411e1bfb 7505
102890f0
AM
7506 if (h != NULL)
7507 {
766bc656
AM
7508 if (h->root.type == bfd_link_hash_defined
7509 || h->root.type == bfd_link_hash_defweak)
7510 value = h->root.u.def.value;
7511 else if (h->root.type == bfd_link_hash_undefweak)
7512 value = 0;
7513 else
102890f0 7514 continue;
102890f0
AM
7515 }
7516 else
7517 /* Symbols referenced by TLS relocs must be of type
7518 STT_TLS. So no need for .opd local sym adjust. */
7519 value = sym->st_value;
7520
7521 ok_tprel = FALSE;
7522 is_local = FALSE;
7523 if (h == NULL
7524 || !h->def_dynamic)
7525 {
7526 is_local = TRUE;
766bc656
AM
7527 if (h != NULL
7528 && h->root.type == bfd_link_hash_undefweak)
7529 ok_tprel = TRUE;
7530 else
7531 {
7532 value += sym_sec->output_offset;
7533 value += sym_sec->output_section->vma;
7534 value -= htab->elf.tls_sec->vma;
7535 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7536 < (bfd_vma) 1 << 32);
7537 }
102890f0 7538 }
951fd09b 7539
102890f0
AM
7540 r_type = ELF64_R_TYPE (rel->r_info);
7541 switch (r_type)
7542 {
7543 case R_PPC64_GOT_TLSLD16:
7544 case R_PPC64_GOT_TLSLD16_LO:
7545 expecting_tls_get_addr = 1;
7546 /* Fall thru */
7547
7548 case R_PPC64_GOT_TLSLD16_HI:
7549 case R_PPC64_GOT_TLSLD16_HA:
7550 /* These relocs should never be against a symbol
7551 defined in a shared lib. Leave them alone if
7552 that turns out to be the case. */
7553 if (!is_local)
7554 continue;
411e1bfb 7555
102890f0 7556 /* LD -> LE */
411e1bfb 7557 tls_set = 0;
102890f0
AM
7558 tls_clear = TLS_LD;
7559 tls_type = TLS_TLS | TLS_LD;
7560 break;
411e1bfb 7561
102890f0
AM
7562 case R_PPC64_GOT_TLSGD16:
7563 case R_PPC64_GOT_TLSGD16_LO:
7564 expecting_tls_get_addr = 1;
7565 /* Fall thru */
7566
7567 case R_PPC64_GOT_TLSGD16_HI:
7568 case R_PPC64_GOT_TLSGD16_HA:
7569 if (ok_tprel)
7570 /* GD -> LE */
411e1bfb 7571 tls_set = 0;
102890f0
AM
7572 else
7573 /* GD -> IE */
7574 tls_set = TLS_TLS | TLS_TPRELGD;
7575 tls_clear = TLS_GD;
7576 tls_type = TLS_TLS | TLS_GD;
7577 break;
7578
7579 case R_PPC64_GOT_TPREL16_DS:
7580 case R_PPC64_GOT_TPREL16_LO_DS:
7581 case R_PPC64_GOT_TPREL16_HI:
7582 case R_PPC64_GOT_TPREL16_HA:
7583 if (ok_tprel)
7584 {
7585 /* IE -> LE */
7586 tls_set = 0;
7587 tls_clear = TLS_TPREL;
7588 tls_type = TLS_TLS | TLS_TPREL;
7589 break;
7590 }
411e1bfb
AM
7591 continue;
7592
102890f0
AM
7593 case R_PPC64_TOC16:
7594 case R_PPC64_TOC16_LO:
7595 case R_PPC64_TLS:
727fc41e
AM
7596 case R_PPC64_TLSGD:
7597 case R_PPC64_TLSLD:
102890f0
AM
7598 if (sym_sec == NULL || sym_sec != toc)
7599 continue;
7600
7601 /* Mark this toc entry as referenced by a TLS
7602 code sequence. We can do that now in the
7603 case of R_PPC64_TLS, and after checking for
7604 tls_get_addr for the TOC16 relocs. */
7605 if (toc_ref == NULL)
7606 {
7607 toc_ref = bfd_zmalloc (toc->size / 8);
7608 if (toc_ref == NULL)
7609 goto err_free_rel;
7610 }
7611 if (h != NULL)
7612 value = h->root.u.def.value;
7613 else
7614 value = sym->st_value;
7615 value += rel->r_addend;
7616 BFD_ASSERT (value < toc->size && value % 8 == 0);
7617 toc_ref_index = value / 8;
727fc41e
AM
7618 if (r_type == R_PPC64_TLS
7619 || r_type == R_PPC64_TLSGD
7620 || r_type == R_PPC64_TLSLD)
102890f0
AM
7621 {
7622 toc_ref[toc_ref_index] = 1;
7623 continue;
7624 }
7625
7626 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7627 continue;
7628
7629 tls_set = 0;
7630 tls_clear = 0;
7631 expecting_tls_get_addr = 2;
7632 break;
7633
7634 case R_PPC64_TPREL64:
7635 if (pass == 0
7636 || sec != toc
7637 || toc_ref == NULL
7638 || !toc_ref[rel->r_offset / 8])
7639 continue;
7640 if (ok_tprel)
7641 {
7642 /* IE -> LE */
7643 tls_set = TLS_EXPLICIT;
7644 tls_clear = TLS_TPREL;
7645 break;
7646 }
7647 continue;
7648
7649 case R_PPC64_DTPMOD64:
7650 if (pass == 0
7651 || sec != toc
7652 || toc_ref == NULL
7653 || !toc_ref[rel->r_offset / 8])
7654 continue;
7655 if (rel + 1 < relend
7656 && (rel[1].r_info
7657 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7658 && rel[1].r_offset == rel->r_offset + 8)
7659 {
7660 if (ok_tprel)
7661 /* GD -> LE */
7662 tls_set = TLS_EXPLICIT | TLS_GD;
7663 else
7664 /* GD -> IE */
7665 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7666 tls_clear = TLS_GD;
7667 }
7668 else
7669 {
7670 if (!is_local)
7671 continue;
7672
7673 /* LD -> LE */
7674 tls_set = TLS_EXPLICIT;
7675 tls_clear = TLS_LD;
7676 }
7677 break;
7678
7679 default:
7680 continue;
7681 }
7682
7683 if (pass == 0)
7684 {
727fc41e
AM
7685 if (!expecting_tls_get_addr
7686 || !sec->has_tls_get_addr_call)
102890f0
AM
7687 continue;
7688
3a71aa26
AM
7689 if (rel + 1 < relend
7690 && branch_reloc_hash_match (ibfd, rel + 1,
7691 htab->tls_get_addr,
7692 htab->tls_get_addr_fd))
102890f0 7693 {
3a71aa26 7694 if (expecting_tls_get_addr == 2)
102890f0 7695 {
3a71aa26 7696 /* Check for toc tls entries. */
f961d9dd 7697 unsigned char *toc_tls;
3a71aa26
AM
7698 int retval;
7699
7700 retval = get_tls_mask (&toc_tls, NULL, NULL,
7701 &locsyms,
7702 rel, ibfd);
7703 if (retval == 0)
7704 goto err_free_rel;
7705 if (retval > 1 && toc_tls != NULL)
7706 toc_ref[toc_ref_index] = 1;
102890f0 7707 }
3a71aa26 7708 continue;
102890f0
AM
7709 }
7710
7711 if (expecting_tls_get_addr != 1)
7712 continue;
7713
7714 /* Uh oh, we didn't find the expected call. We
7715 could just mark this symbol to exclude it
7716 from tls optimization but it's safer to skip
7717 the entire section. */
7718 sec->has_tls_reloc = 0;
7719 break;
7720 }
7721
85f7a9cb 7722 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM
7723 {
7724 struct plt_entry *ent;
7725 for (ent = htab->tls_get_addr->elf.plt.plist;
7726 ent != NULL;
7727 ent = ent->next)
7728 if (ent->addend == 0)
411e1bfb 7729 {
102890f0 7730 if (ent->plt.refcount > 0)
30038c59 7731 {
102890f0
AM
7732 ent->plt.refcount -= 1;
7733 expecting_tls_get_addr = 0;
30038c59 7734 }
102890f0 7735 break;
411e1bfb 7736 }
102890f0 7737 }
411e1bfb 7738
85f7a9cb 7739 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM
7740 {
7741 struct plt_entry *ent;
7742 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7743 ent != NULL;
7744 ent = ent->next)
7745 if (ent->addend == 0)
411e1bfb 7746 {
102890f0
AM
7747 if (ent->plt.refcount > 0)
7748 ent->plt.refcount -= 1;
7749 break;
411e1bfb 7750 }
102890f0 7751 }
411e1bfb 7752
102890f0 7753 if (tls_clear == 0)
30038c59
AM
7754 continue;
7755
102890f0
AM
7756 if ((tls_set & TLS_EXPLICIT) == 0)
7757 {
7758 struct got_entry *ent;
411e1bfb 7759
102890f0
AM
7760 /* Adjust got entry for this reloc. */
7761 if (h != NULL)
7762 ent = h->got.glist;
7763 else
7764 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7765
102890f0
AM
7766 for (; ent != NULL; ent = ent->next)
7767 if (ent->addend == rel->r_addend
7768 && ent->owner == ibfd
7769 && ent->tls_type == tls_type)
7770 break;
7771 if (ent == NULL)
7772 abort ();
411e1bfb 7773
102890f0
AM
7774 if (tls_set == 0)
7775 {
7776 /* We managed to get rid of a got entry. */
7777 if (ent->got.refcount > 0)
7778 ent->got.refcount -= 1;
7779 }
7780 }
7781 else
7782 {
7783 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7784 we'll lose one or two dyn relocs. */
7785 if (!dec_dynrel_count (rel->r_info, sec, info,
7786 NULL, h, sym_sec))
7787 return FALSE;
411e1bfb 7788
102890f0
AM
7789 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7790 {
7791 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7792 NULL, h, sym_sec))
7793 return FALSE;
7794 }
7795 }
411e1bfb 7796
102890f0
AM
7797 *tls_mask |= tls_set;
7798 *tls_mask &= ~tls_clear;
7799 }
8c1d1bb8 7800
102890f0
AM
7801 if (elf_section_data (sec)->relocs != relstart)
7802 free (relstart);
7803 }
411e1bfb 7804
727fc41e
AM
7805 if (toc_ref != NULL)
7806 free (toc_ref);
411e1bfb 7807
727fc41e
AM
7808 if (locsyms != NULL
7809 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7810 {
7811 if (!info->keep_memory)
7812 free (locsyms);
7813 else
7814 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7815 }
7816 }
b34976b6 7817 return TRUE;
1e2f5b6e 7818}
b34976b6 7819
c5614fa4
AM
7820/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7821 the values of any global symbols in a toc section that has been
7822 edited. Globals in toc sections should be a rarity, so this function
7823 sets a flag if any are found in toc sections other than the one just
7824 edited, so that futher hash table traversals can be avoided. */
7825
7826struct adjust_toc_info
7827{
7828 asection *toc;
7829 unsigned long *skip;
7830 bfd_boolean global_toc_syms;
7831};
7832
7833static bfd_boolean
7834adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7835{
7836 struct ppc_link_hash_entry *eh;
7837 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7838
7839 if (h->root.type == bfd_link_hash_indirect)
7840 return TRUE;
7841
7842 if (h->root.type == bfd_link_hash_warning)
7843 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7844
7845 if (h->root.type != bfd_link_hash_defined
7846 && h->root.type != bfd_link_hash_defweak)
7847 return TRUE;
7848
7849 eh = (struct ppc_link_hash_entry *) h;
7850 if (eh->adjust_done)
7851 return TRUE;
7852
7853 if (eh->elf.root.u.def.section == toc_inf->toc)
7854 {
7855 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7856 if (skip != (unsigned long) -1)
7857 eh->elf.root.u.def.value -= skip;
7858 else
7859 {
7860 (*_bfd_error_handler)
7861 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7862 eh->elf.root.u.def.section = &bfd_abs_section;
7863 eh->elf.root.u.def.value = 0;
7864 }
7865 eh->adjust_done = 1;
7866 }
7867 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7868 toc_inf->global_toc_syms = TRUE;
7869
7870 return TRUE;
7871}
7872
7873/* Examine all relocs referencing .toc sections in order to remove
7874 unused .toc entries. */
7875
7876bfd_boolean
33c0ec9d 7877ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM
7878{
7879 bfd *ibfd;
7880 struct adjust_toc_info toc_inf;
7881
7882 toc_inf.global_toc_syms = TRUE;
7883 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7884 {
7885 asection *toc, *sec;
7886 Elf_Internal_Shdr *symtab_hdr;
7887 Elf_Internal_Sym *local_syms;
7888 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7889 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM
7890 unsigned long *skip, *drop;
7891 unsigned char *used;
7892 unsigned char *keep, last, some_unused;
7893
7894 toc = bfd_get_section_by_name (ibfd, ".toc");
7895 if (toc == NULL
92b7a70f 7896 || toc->size == 0
c5614fa4
AM
7897 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7898 || elf_discarded_section (toc))
7899 continue;
7900
7901 local_syms = NULL;
0ffa91dd 7902 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM
7903 sym_hashes = elf_sym_hashes (ibfd);
7904
7905 /* Look at sections dropped from the final link. */
7906 skip = NULL;
7907 relstart = NULL;
7908 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7909 {
7910 if (sec->reloc_count == 0
7911 || !elf_discarded_section (sec)
7912 || get_opd_info (sec)
7913 || (sec->flags & SEC_ALLOC) == 0
7914 || (sec->flags & SEC_DEBUGGING) != 0)
7915 continue;
7916
7917 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7918 if (relstart == NULL)
7919 goto error_ret;
7920
7921 /* Run through the relocs to see which toc entries might be
7922 unused. */
7923 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7924 {
7925 enum elf_ppc64_reloc_type r_type;
7926 unsigned long r_symndx;
7927 asection *sym_sec;
7928 struct elf_link_hash_entry *h;
7929 Elf_Internal_Sym *sym;
7930 bfd_vma val;
7931
7932 r_type = ELF64_R_TYPE (rel->r_info);
7933 switch (r_type)
7934 {
7935 default:
7936 continue;
7937
7938 case R_PPC64_TOC16:
7939 case R_PPC64_TOC16_LO:
7940 case R_PPC64_TOC16_HI:
7941 case R_PPC64_TOC16_HA:
7942 case R_PPC64_TOC16_DS:
7943 case R_PPC64_TOC16_LO_DS:
7944 break;
7945 }
7946
7947 r_symndx = ELF64_R_SYM (rel->r_info);
7948 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7949 r_symndx, ibfd))
7950 goto error_ret;
7951
7952 if (sym_sec != toc)
7953 continue;
7954
7955 if (h != NULL)
7956 val = h->root.u.def.value;
7957 else
7958 val = sym->st_value;
7959 val += rel->r_addend;
7960
7961 if (val >= toc->size)
7962 continue;
7963
7964 /* Anything in the toc ought to be aligned to 8 bytes.
7965 If not, don't mark as unused. */
7966 if (val & 7)
7967 continue;
7968
7969 if (skip == NULL)
7970 {
7971 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7972 if (skip == NULL)
7973 goto error_ret;
7974 }
7975
7976 skip[val >> 3] = 1;
7977 }
7978
7979 if (elf_section_data (sec)->relocs != relstart)
7980 free (relstart);
7981 }
7982
7983 if (skip == NULL)
7984 continue;
7985
7986 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7987 if (used == NULL)
7988 {
7989 error_ret:
7990 if (local_syms != NULL
7991 && symtab_hdr->contents != (unsigned char *) local_syms)
7992 free (local_syms);
7993 if (sec != NULL
7994 && relstart != NULL
7995 && elf_section_data (sec)->relocs != relstart)
7996 free (relstart);
7997 if (skip != NULL)
7998 free (skip);
7999 return FALSE;
8000 }
8001
30038c59
AM
8002 /* Now check all kept sections that might reference the toc.
8003 Check the toc itself last. */
8004 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8005 : ibfd->sections);
c5614fa4 8006 sec != NULL;
c5614fa4 8007 sec = (sec == toc ? NULL
c5614fa4 8008 : sec->next == NULL ? toc
30038c59 8009 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM
8010 : sec->next))
8011 {
8012 int repeat;
8013
8014 if (sec->reloc_count == 0
8015 || elf_discarded_section (sec)
8016 || get_opd_info (sec)
8017 || (sec->flags & SEC_ALLOC) == 0
8018 || (sec->flags & SEC_DEBUGGING) != 0)
8019 continue;
8020
8021 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
8022 if (relstart == NULL)
8023 goto error_ret;
8024
8025 /* Mark toc entries referenced as used. */
8026 repeat = 0;
8027 do
8028 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8029 {
8030 enum elf_ppc64_reloc_type r_type;
8031 unsigned long r_symndx;
8032 asection *sym_sec;
8033 struct elf_link_hash_entry *h;
8034 Elf_Internal_Sym *sym;
8035 bfd_vma val;
8036
8037 r_type = ELF64_R_TYPE (rel->r_info);
8038 switch (r_type)
8039 {
8040 case R_PPC64_TOC16:
8041 case R_PPC64_TOC16_LO:
8042 case R_PPC64_TOC16_HI:
8043 case R_PPC64_TOC16_HA:
8044 case R_PPC64_TOC16_DS:
8045 case R_PPC64_TOC16_LO_DS:
8046 /* In case we're taking addresses of toc entries. */
8047 case R_PPC64_ADDR64:
8048 break;
8049
8050 default:
8051 continue;
8052 }
8053
8054 r_symndx = ELF64_R_SYM (rel->r_info);
8055 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8056 r_symndx, ibfd))
8057 {
8058 free (used);
8059 goto error_ret;
8060 }
8061
8062 if (sym_sec != toc)
8063 continue;
8064
8065 if (h != NULL)
8066 val = h->root.u.def.value;
8067 else
8068 val = sym->st_value;
8069 val += rel->r_addend;
8070
8071 if (val >= toc->size)
8072 continue;
8073
8074 /* For the toc section, we only mark as used if
8075 this entry itself isn't unused. */
8076 if (sec == toc
8077 && !used[val >> 3]
8078 && (used[rel->r_offset >> 3]
8079 || !skip[rel->r_offset >> 3]))
8080 /* Do all the relocs again, to catch reference
8081 chains. */
8082 repeat = 1;
8083
8084 used[val >> 3] = 1;
8085 }
8086 while (repeat);
8087 }
8088
8089 /* Merge the used and skip arrays. Assume that TOC
8090 doublewords not appearing as either used or unused belong
8091 to to an entry more than one doubleword in size. */
8092 for (drop = skip, keep = used, last = 0, some_unused = 0;
8093 drop < skip + (toc->size + 7) / 8;
8094 ++drop, ++keep)
8095 {
8096 if (*keep)
8097 {
8098 *drop = 0;
8099 last = 0;
8100 }
8101 else if (*drop)
8102 {
8103 some_unused = 1;
8104 last = 1;
8105 }
8106 else
8107 *drop = last;
8108 }
8109
8110 free (used);
8111
8112 if (some_unused)
8113 {
8114 bfd_byte *contents, *src;
8115 unsigned long off;
8116
8117 /* Shuffle the toc contents, and at the same time convert the
8118 skip array from booleans into offsets. */
8119 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8120 goto error_ret;
8121
8122 elf_section_data (toc)->this_hdr.contents = contents;
8123
8124 for (src = contents, off = 0, drop = skip;
8125 src < contents + toc->size;
8126 src += 8, ++drop)
8127 {
8128 if (*drop)
8129 {
8130 *drop = (unsigned long) -1;
8131 off += 8;
8132 }
8133 else if (off != 0)
8134 {
8135 *drop = off;
8136 memcpy (src - off, src, 8);
8137 }
8138 }
8139 toc->rawsize = toc->size;
8140 toc->size = src - contents - off;
8141
92b7a70f
AM
8142 if (toc->reloc_count != 0)
8143 {
8144 Elf_Internal_Rela *wrel;
8145 bfd_size_type sz;
c5614fa4 8146
92b7a70f
AM
8147 /* Read toc relocs. */
8148 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8149 TRUE);
8150 if (relstart == NULL)
8151 goto error_ret;
8152
8153 /* Remove unused toc relocs, and adjust those we keep. */
8154 wrel = relstart;
8155 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8156 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
8157 {
8158 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8159 wrel->r_info = rel->r_info;
8160 wrel->r_addend = rel->r_addend;
8161 ++wrel;
8162 }
8c1d1bb8
AM
8163 else if (!dec_dynrel_count (rel->r_info, toc, info,
8164 &local_syms, NULL, NULL))
8165 goto error_ret;
35090471 8166
92b7a70f
AM
8167 toc->reloc_count = wrel - relstart;
8168 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
8169 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
8170 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
8171 }
c5614fa4
AM
8172
8173 /* Adjust addends for relocs against the toc section sym. */
8174 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8175 {
8176 if (sec->reloc_count == 0
8177 || elf_discarded_section (sec))
8178 continue;
8179
8180 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8181 TRUE);
8182 if (relstart == NULL)
8183 goto error_ret;
8184
8185 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8186 {
8187 enum elf_ppc64_reloc_type r_type;
8188 unsigned long r_symndx;
8189 asection *sym_sec;
8190 struct elf_link_hash_entry *h;
8191 Elf_Internal_Sym *sym;
8192
8193 r_type = ELF64_R_TYPE (rel->r_info);
8194 switch (r_type)
8195 {
8196 default:
8197 continue;
8198
8199 case R_PPC64_TOC16:
8200 case R_PPC64_TOC16_LO:
8201 case R_PPC64_TOC16_HI:
8202 case R_PPC64_TOC16_HA:
8203 case R_PPC64_TOC16_DS:
8204 case R_PPC64_TOC16_LO_DS:
8205 case R_PPC64_ADDR64:
8206 break;
8207 }
8208
8209 r_symndx = ELF64_R_SYM (rel->r_info);
8210 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8211 r_symndx, ibfd))
8212 goto error_ret;
8213
8214 if (sym_sec != toc || h != NULL || sym->st_value != 0)
8215 continue;
8216
8217 rel->r_addend -= skip[rel->r_addend >> 3];
8218 }
8219 }
8220
8221 /* We shouldn't have local or global symbols defined in the TOC,
8222 but handle them anyway. */
8223 if (local_syms != NULL)
8224 {
8225 Elf_Internal_Sym *sym;
8226
8227 for (sym = local_syms;
8228 sym < local_syms + symtab_hdr->sh_info;
8229 ++sym)
cb33740c 8230 if (sym->st_value != 0
c5614fa4
AM
8231 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8232 {
8233 if (skip[sym->st_value >> 3] != (unsigned long) -1)
8234 sym->st_value -= skip[sym->st_value >> 3];
8235 else
8236 {
8237 (*_bfd_error_handler)
8238 (_("%s defined in removed toc entry"),
26c61ae5
L
8239 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8240 NULL));
c5614fa4
AM
8241 sym->st_value = 0;
8242 sym->st_shndx = SHN_ABS;
8243 }
8244 symtab_hdr->contents = (unsigned char *) local_syms;
8245 }
8246 }
8247
8248 /* Finally, adjust any global syms defined in the toc. */
8249 if (toc_inf.global_toc_syms)
8250 {
8251 toc_inf.toc = toc;
8252 toc_inf.skip = skip;
8253 toc_inf.global_toc_syms = FALSE;
8254 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8255 &toc_inf);
8256 }
8257 }
8258
8259 if (local_syms != NULL
8260 && symtab_hdr->contents != (unsigned char *) local_syms)
8261 {
8262 if (!info->keep_memory)
8263 free (local_syms);
8264 else
8265 symtab_hdr->contents = (unsigned char *) local_syms;
8266 }
8267 free (skip);
8268 }
8269
8270 return TRUE;
8271}
8272
927be08e
AM
8273/* Allocate space for one GOT entry. */
8274
8275static void
8276allocate_got (struct elf_link_hash_entry *h,
8277 struct bfd_link_info *info,
8278 struct got_entry *gent)
8279{
8280 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8281 bfd_boolean dyn;
8282 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8283 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8284 ? 16 : 8);
8285 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8286 ? 2 : 1) * sizeof (Elf64_External_Rela);
8287 asection *got = ppc64_elf_tdata (gent->owner)->got;
8288
8289 gent->got.offset = got->size;
8290 got->size += entsize;
8291
8292 dyn = htab->elf.dynamic_sections_created;
8293 if ((info->shared
8294 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8295 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8296 || h->root.type != bfd_link_hash_undefweak))
8297 {
8298 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8299 relgot->size += rentsize;
8300 }
8301 else if (h->type == STT_GNU_IFUNC)
8302 {
8303 asection *relgot = htab->reliplt;
8304 relgot->size += rentsize;
8305 htab->got_reli_size += rentsize;
8306 }
8307}
8308
65f38f15
AM
8309/* Allocate space in .plt, .got and associated reloc sections for
8310 dynamic relocs. */
5bd4f169 8311
b34976b6 8312static bfd_boolean
4ce794b7 8313allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 8314{
65f38f15
AM
8315 struct bfd_link_info *info;
8316 struct ppc_link_hash_table *htab;
5bd4f169 8317 asection *s;
65f38f15
AM
8318 struct ppc_link_hash_entry *eh;
8319 struct ppc_dyn_relocs *p;
0b8bcf0d 8320 struct got_entry **pgent, *gent;
5bd4f169 8321
e92d460e 8322 if (h->root.type == bfd_link_hash_indirect)
b34976b6 8323 return TRUE;
5bd4f169 8324
e92d460e
AM
8325 if (h->root.type == bfd_link_hash_warning)
8326 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8327
65f38f15
AM
8328 info = (struct bfd_link_info *) inf;
8329 htab = ppc_hash_table (info);
4dfe6ac6
NC
8330 if (htab == NULL)
8331 return FALSE;
5bd4f169 8332
e054468f
AM
8333 if ((htab->elf.dynamic_sections_created
8334 && h->dynindx != -1
8335 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8336 || h->type == STT_GNU_IFUNC)
5bd4f169 8337 {
411e1bfb
AM
8338 struct plt_entry *pent;
8339 bfd_boolean doneone = FALSE;
8340 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8341 if (pent->plt.refcount > 0)
8342 {
25f23106
AM
8343 if (!htab->elf.dynamic_sections_created
8344 || h->dynindx == -1)
e054468f
AM
8345 {
8346 s = htab->iplt;
8347 pent->plt.offset = s->size;
8348 s->size += PLT_ENTRY_SIZE;
8349 s = htab->reliplt;
8350 }
8351 else
8352 {
8353 /* If this is the first .plt entry, make room for the special
8354 first entry. */
8355 s = htab->plt;
8356 if (s->size == 0)
8357 s->size += PLT_INITIAL_ENTRY_SIZE;
8358
8359 pent->plt.offset = s->size;
8360
8361 /* Make room for this entry. */
8362 s->size += PLT_ENTRY_SIZE;
8363
8364 /* Make room for the .glink code. */
8365 s = htab->glink;
8366 if (s->size == 0)
8367 s->size += GLINK_CALL_STUB_SIZE;
8368 /* We need bigger stubs past index 32767. */
8369 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8370 s->size += 4;
8371 s->size += 2*4;
8372
8373 /* We also need to make an entry in the .rela.plt section. */
8374 s = htab->relplt;
8375 }
eea6121a 8376 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
8377 doneone = TRUE;
8378 }
8379 else
8380 pent->plt.offset = (bfd_vma) -1;
8381 if (!doneone)
65f38f15 8382 {
411e1bfb 8383 h->plt.plist = NULL;
f5385ebf 8384 h->needs_plt = 0;
65f38f15
AM
8385 }
8386 }
8387 else
8388 {
411e1bfb 8389 h->plt.plist = NULL;
f5385ebf 8390 h->needs_plt = 0;
65f38f15
AM
8391 }
8392
951fd09b
AM
8393 eh = (struct ppc_link_hash_entry *) h;
8394 /* Run through the TLS GD got entries first if we're changing them
8395 to TPREL. */
e7b938ca 8396 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM
8397 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8398 if (gent->got.refcount > 0
8399 && (gent->tls_type & TLS_GD) != 0)
8400 {
8401 /* This was a GD entry that has been converted to TPREL. If
8402 there happens to be a TPREL entry we can use that one. */
8403 struct got_entry *ent;
8404 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8405 if (ent->got.refcount > 0
8406 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM
8407 && ent->addend == gent->addend
8408 && ent->owner == gent->owner)
951fd09b
AM
8409 {
8410 gent->got.refcount = 0;
8411 break;
8412 }
8413
8414 /* If not, then we'll be using our own TPREL entry. */
8415 if (gent->got.refcount != 0)
8416 gent->tls_type = TLS_TLS | TLS_TPREL;
8417 }
8418
0b8bcf0d
AM
8419 pgent = &h->got.glist;
8420 while ((gent = *pgent) != NULL)
411e1bfb
AM
8421 if (gent->got.refcount > 0)
8422 {
8423 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM
8424 Undefined weak syms won't yet be marked as dynamic,
8425 nor will all TLS symbols. */
411e1bfb 8426 if (h->dynindx == -1
b099ab9f 8427 && !h->forced_local
25f23106 8428 && h->type != STT_GNU_IFUNC
b099ab9f 8429 && htab->elf.dynamic_sections_created)
411e1bfb 8430 {
c152c796 8431 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM
8432 return FALSE;
8433 }
65f38f15 8434
d881513a 8435 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 8436 && !h->def_dynamic)
411e1bfb 8437 {
927be08e 8438 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
0b8bcf0d 8439 *pgent = gent->next;
951fd09b 8440 continue;
411e1bfb 8441 }
951fd09b 8442
0c8d6e5c 8443 if (!is_ppc64_elf (gent->owner))
927be08e 8444 abort ();
0ffa91dd 8445
927be08e 8446 allocate_got (h, info, gent);
0b8bcf0d 8447 pgent = &gent->next;
411e1bfb
AM
8448 }
8449 else
0b8bcf0d 8450 *pgent = gent->next;
65f38f15 8451
b099ab9f 8452 if (eh->dyn_relocs == NULL
25f23106
AM
8453 || (!htab->elf.dynamic_sections_created
8454 && h->type != STT_GNU_IFUNC))
b34976b6 8455 return TRUE;
65f38f15
AM
8456
8457 /* In the shared -Bsymbolic case, discard space allocated for
8458 dynamic pc-relative relocs against symbols which turn out to be
8459 defined in regular objects. For the normal shared case, discard
8460 space for relocs that have become local due to symbol visibility
8461 changes. */
8462
8463 if (info->shared)
8464 {
9c7a29a3 8465 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 8466 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM
8467 generated via assembly. We want calls to protected symbols to
8468 resolve directly to the function rather than going via the plt.
8469 If people want function pointer comparisons to work as expected
8470 then they should avoid writing weird assembly. */
09695f56 8471 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM
8472 {
8473 struct ppc_dyn_relocs **pp;
8474
8475 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 8476 {
65f38f15
AM
8477 p->count -= p->pc_count;
8478 p->pc_count = 0;
8479 if (p->count == 0)
8480 *pp = p->next;
8481 else
8482 pp = &p->next;
5bd4f169 8483 }
65f38f15 8484 }
4e795f50
AM
8485
8486 /* Also discard relocs on undefined weak syms with non-default
8487 visibility. */
cab87ef9
AM
8488 if (eh->dyn_relocs != NULL
8489 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM
8490 {
8491 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8492 eh->dyn_relocs = NULL;
8493
8494 /* Make sure this symbol is output as a dynamic symbol.
8495 Undefined weak syms won't yet be marked as dynamic. */
8496 else if (h->dynindx == -1
8497 && !h->forced_local)
8498 {
8499 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8500 return FALSE;
8501 }
8502 }
65f38f15 8503 }
25f23106
AM
8504 else if (h->type == STT_GNU_IFUNC)
8505 {
8506 if (!h->non_got_ref)
8507 eh->dyn_relocs = NULL;
8508 }
f4656909 8509 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM
8510 {
8511 /* For the non-shared case, discard space for relocs against
8512 symbols which turn out to need copy relocs or are not
8513 dynamic. */
8514
f5385ebf 8515 if (!h->non_got_ref
f5385ebf 8516 && !h->def_regular)
65f38f15
AM
8517 {
8518 /* Make sure this symbol is output as a dynamic symbol.
8519 Undefined weak syms won't yet be marked as dynamic. */
8520 if (h->dynindx == -1
f5385ebf 8521 && !h->forced_local)
65f38f15 8522 {
c152c796 8523 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 8524 return FALSE;
65f38f15
AM
8525 }
8526
8527 /* If that succeeded, we know we'll be keeping all the
8528 relocs. */
8529 if (h->dynindx != -1)
8530 goto keep;
8531 }
8532
8533 eh->dyn_relocs = NULL;
8534
ec338859 8535 keep: ;
65f38f15
AM
8536 }
8537
8538 /* Finally, allocate space. */
8539 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8540 {
8541 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM
8542 if (!htab->elf.dynamic_sections_created)
8543 sreloc = htab->reliplt;
eea6121a 8544 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM
8545 }
8546
b34976b6 8547 return TRUE;
65f38f15
AM
8548}
8549
8550/* Find any dynamic relocs that apply to read-only sections. */
8551
b34976b6 8552static bfd_boolean
4ce794b7 8553readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM
8554{
8555 struct ppc_link_hash_entry *eh;
8556 struct ppc_dyn_relocs *p;
8557
e92d460e
AM
8558 if (h->root.type == bfd_link_hash_warning)
8559 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8560
65f38f15
AM
8561 eh = (struct ppc_link_hash_entry *) h;
8562 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8563 {
8564 asection *s = p->sec->output_section;
8565
8566 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8567 {
4ce794b7 8568 struct bfd_link_info *info = inf;
65f38f15
AM
8569
8570 info->flags |= DF_TEXTREL;
8571
8572 /* Not an error, just cut short the traversal. */
b34976b6 8573 return FALSE;
65f38f15
AM
8574 }
8575 }
b34976b6 8576 return TRUE;
65f38f15
AM
8577}
8578
8579/* Set the sizes of the dynamic sections. */
8580
b34976b6 8581static bfd_boolean
4ce794b7
AM
8582ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8583 struct bfd_link_info *info)
65f38f15
AM
8584{
8585 struct ppc_link_hash_table *htab;
8586 bfd *dynobj;
8587 asection *s;
b34976b6 8588 bfd_boolean relocs;
65f38f15
AM
8589 bfd *ibfd;
8590
8591 htab = ppc_hash_table (info);
4dfe6ac6
NC
8592 if (htab == NULL)
8593 return FALSE;
8594
65f38f15
AM
8595 dynobj = htab->elf.dynobj;
8596 if (dynobj == NULL)
8597 abort ();
8598
8599 if (htab->elf.dynamic_sections_created)
8600 {
8601 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 8602 if (info->executable)
65f38f15
AM
8603 {
8604 s = bfd_get_section_by_name (dynobj, ".interp");
8605 if (s == NULL)
8606 abort ();
eea6121a 8607 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM
8608 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8609 }
8610 }
8611
8612 /* Set up .got offsets for local syms, and space for local dynamic
8613 relocs. */
8614 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8615 {
411e1bfb
AM
8616 struct got_entry **lgot_ents;
8617 struct got_entry **end_lgot_ents;
e054468f
AM
8618 struct plt_entry **local_plt;
8619 struct plt_entry **end_local_plt;
f961d9dd 8620 unsigned char *lgot_masks;
65f38f15
AM
8621 bfd_size_type locsymcount;
8622 Elf_Internal_Shdr *symtab_hdr;
8623 asection *srel;
8624
0c8d6e5c 8625 if (!is_ppc64_elf (ibfd))
65f38f15
AM
8626 continue;
8627
8628 for (s = ibfd->sections; s != NULL; s = s->next)
8629 {
ec338859 8630 struct ppc_dyn_relocs *p;
65f38f15 8631
6edfbbad 8632 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 8633 {
ec338859
AM
8634 if (!bfd_is_abs_section (p->sec)
8635 && bfd_is_abs_section (p->sec->output_section))
8636 {
8637 /* Input section has been discarded, either because
8638 it is a copy of a linkonce section or due to
8639 linker script /DISCARD/, so we'll be discarding
8640 the relocs too. */
8641 }
248866a8 8642 else if (p->count != 0)
ec338859
AM
8643 {
8644 srel = elf_section_data (p->sec)->sreloc;
25f23106
AM
8645 if (!htab->elf.dynamic_sections_created)
8646 srel = htab->reliplt;
eea6121a 8647 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
8648 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8649 info->flags |= DF_TEXTREL;
ec338859 8650 }
65f38f15
AM
8651 }
8652 }
8653
411e1bfb
AM
8654 lgot_ents = elf_local_got_ents (ibfd);
8655 if (!lgot_ents)
65f38f15
AM
8656 continue;
8657
0ffa91dd 8658 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 8659 locsymcount = symtab_hdr->sh_info;
411e1bfb 8660 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM
8661 local_plt = (struct plt_entry **) end_lgot_ents;
8662 end_local_plt = local_plt + locsymcount;
f961d9dd 8663 lgot_masks = (unsigned char *) end_local_plt;
e717da7e
AM
8664 s = ppc64_elf_tdata (ibfd)->got;
8665 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 8666 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 8667 {
0b8bcf0d 8668 struct got_entry **pent, *ent;
411e1bfb 8669
0b8bcf0d
AM
8670 pent = lgot_ents;
8671 while ((ent = *pent) != NULL)
411e1bfb
AM
8672 if (ent->got.refcount > 0)
8673 {
e7b938ca 8674 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 8675 {
927be08e 8676 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 8677 *pent = ent->next;
411e1bfb
AM
8678 }
8679 else
8680 {
25f23106 8681 unsigned int num = 1;
eea6121a 8682 ent->got.offset = s->size;
e7b938ca 8683 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
25f23106
AM
8684 num = 2;
8685 s->size += num * 8;
8686 if (info->shared)
8687 srel->size += num * sizeof (Elf64_External_Rela);
8688 else if ((*lgot_masks & PLT_IFUNC) != 0)
927be08e
AM
8689 {
8690 htab->reliplt->size
8691 += num * sizeof (Elf64_External_Rela);
8692 htab->got_reli_size
8693 += num * sizeof (Elf64_External_Rela);
8694 }
0b8bcf0d 8695 pent = &ent->next;
411e1bfb
AM
8696 }
8697 }
8698 else
0b8bcf0d 8699 *pent = ent->next;
65f38f15 8700 }
e054468f
AM
8701
8702 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8703 for (; local_plt < end_local_plt; ++local_plt)
8704 {
8705 struct plt_entry *ent;
8706
8707 for (ent = *local_plt; ent != NULL; ent = ent->next)
8708 if (ent->plt.refcount > 0)
8709 {
91d6fa6a 8710 s = htab->iplt;
e054468f
AM
8711 ent->plt.offset = s->size;
8712 s->size += PLT_ENTRY_SIZE;
8713
25f23106 8714 htab->reliplt->size += sizeof (Elf64_External_Rela);
e054468f
AM
8715 }
8716 else
8717 ent->plt.offset = (bfd_vma) -1;
8718 }
65f38f15
AM
8719 }
8720
8721 /* Allocate global sym .plt and .got entries, and space for global
8722 sym dynamic relocs. */
4ce794b7 8723 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 8724
102890f0
AM
8725 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8726 {
0c8d6e5c 8727 if (!is_ppc64_elf (ibfd))
102890f0
AM
8728 continue;
8729
927be08e 8730 if (ppc64_tlsld_got (ibfd)->got.refcount > 0)
102890f0
AM
8731 {
8732 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM
8733 ppc64_tlsld_got (ibfd)->got.offset = s->size;
8734 ppc64_tlsld_got (ibfd)->owner = ibfd;
102890f0
AM
8735 s->size += 16;
8736 if (info->shared)
8737 {
8738 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8739 srel->size += sizeof (Elf64_External_Rela);
8740 }
8741 }
8742 else
927be08e 8743 ppc64_tlsld_got (ibfd)->got.offset = (bfd_vma) -1;
102890f0
AM
8744 }
8745
65f38f15
AM
8746 /* We now have determined the sizes of the various dynamic sections.
8747 Allocate memory for them. */
b34976b6 8748 relocs = FALSE;
65f38f15
AM
8749 for (s = dynobj->sections; s != NULL; s = s->next)
8750 {
8751 if ((s->flags & SEC_LINKER_CREATED) == 0)
8752 continue;
8753
4ce794b7 8754 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM
8755 /* These haven't been allocated yet; don't strip. */
8756 continue;
e717da7e
AM
8757 else if (s == htab->got
8758 || s == htab->plt
e054468f 8759 || s == htab->iplt
c456f082
AM
8760 || s == htab->glink
8761 || s == htab->dynbss)
65f38f15
AM
8762 {
8763 /* Strip this section if we don't need it; see the
8764 comment below. */
5bd4f169 8765 }
0112cd26 8766 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 8767 {
c456f082 8768 if (s->size != 0)
5bd4f169 8769 {
4ce794b7 8770 if (s != htab->relplt)
b34976b6 8771 relocs = TRUE;
5bd4f169
AM
8772
8773 /* We use the reloc_count field as a counter if we need
8774 to copy relocs into the output file. */
8775 s->reloc_count = 0;
8776 }
8777 }
65f38f15 8778 else
5bd4f169
AM
8779 {
8780 /* It's not one of our sections, so don't allocate space. */
8781 continue;
8782 }
8783
eea6121a 8784 if (s->size == 0)
5bd4f169 8785 {
c456f082
AM
8786 /* If we don't need this section, strip it from the
8787 output file. This is mostly to handle .rela.bss and
8788 .rela.plt. We must create both sections in
8789 create_dynamic_sections, because they must be created
8790 before the linker maps input sections to output
8791 sections. The linker does that before
8792 adjust_dynamic_symbol is called, and it is that
8793 function which decides whether anything needs to go
8794 into these sections. */
8423293d 8795 s->flags |= SEC_EXCLUDE;
5bd4f169
AM
8796 continue;
8797 }
8798
c456f082 8799 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM
8800 continue;
8801
65f38f15
AM
8802 /* Allocate memory for the section contents. We use bfd_zalloc
8803 here in case unused entries are not reclaimed before the
8804 section's contents are written out. This should not happen,
411e1bfb
AM
8805 but this way if it does we get a R_PPC64_NONE reloc in .rela
8806 sections instead of garbage.
8807 We also rely on the section contents being zero when writing
8808 the GOT. */
eea6121a 8809 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8810 if (s->contents == NULL)
b34976b6 8811 return FALSE;
5bd4f169
AM
8812 }
8813
e717da7e
AM
8814 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8815 {
0c8d6e5c 8816 if (!is_ppc64_elf (ibfd))
7b53ace3
AM
8817 continue;
8818
e717da7e
AM
8819 s = ppc64_elf_tdata (ibfd)->got;
8820 if (s != NULL && s != htab->got)
8821 {
eea6121a 8822 if (s->size == 0)
8423293d 8823 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8824 else
8825 {
eea6121a 8826 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8827 if (s->contents == NULL)
8828 return FALSE;
8829 }
8830 }
8831 s = ppc64_elf_tdata (ibfd)->relgot;
8832 if (s != NULL)
8833 {
eea6121a 8834 if (s->size == 0)
8423293d 8835 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8836 else
8837 {
eea6121a 8838 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8839 if (s->contents == NULL)
8840 return FALSE;
8841 relocs = TRUE;
8842 s->reloc_count = 0;
8843 }
8844 }
8845 }
8846
e86ce104 8847 if (htab->elf.dynamic_sections_created)
5bd4f169
AM
8848 {
8849 /* Add some entries to the .dynamic section. We fill in the
8850 values later, in ppc64_elf_finish_dynamic_sections, but we
8851 must add the entries now so that we get the correct size for
8852 the .dynamic section. The DT_DEBUG entry is filled in by the
8853 dynamic linker and used by the debugger. */
dc810e39 8854#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8855 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8856
36af4a4e 8857 if (info->executable)
5bd4f169 8858 {
dc810e39 8859 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8860 return FALSE;
5bd4f169
AM
8861 }
8862
eea6121a 8863 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8864 {
dc810e39
AM
8865 if (!add_dynamic_entry (DT_PLTGOT, 0)
8866 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8867 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM
8868 || !add_dynamic_entry (DT_JMPREL, 0)
8869 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8870 return FALSE;
5bd4f169
AM
8871 }
8872
19397422
AM
8873 if (NO_OPD_RELOCS)
8874 {
8875 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8876 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8877 return FALSE;
19397422
AM
8878 }
8879
a7f2871e
AM
8880 if (!htab->no_tls_get_addr_opt
8881 && htab->tls_get_addr_fd != NULL
8882 && htab->tls_get_addr_fd->elf.plt.plist != NULL
8883 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
8884 return FALSE;
8885
5bd4f169
AM
8886 if (relocs)
8887 {
dc810e39
AM
8888 if (!add_dynamic_entry (DT_RELA, 0)
8889 || !add_dynamic_entry (DT_RELASZ, 0)
8890 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8891 return FALSE;
5bd4f169 8892
65f38f15
AM
8893 /* If any dynamic relocs apply to a read-only section,
8894 then we need a DT_TEXTREL entry. */
248866a8 8895 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8896 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8897
65f38f15 8898 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8899 {
65f38f15 8900 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8901 return FALSE;
5bd4f169 8902 }
5bd4f169 8903 }
5bd4f169 8904 }
65f38f15 8905#undef add_dynamic_entry
5bd4f169 8906
b34976b6 8907 return TRUE;
5bd4f169
AM
8908}
8909
721956f4 8910/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8911
4ce794b7
AM
8912static inline enum ppc_stub_type
8913ppc_type_of_stub (asection *input_sec,
8914 const Elf_Internal_Rela *rel,
8915 struct ppc_link_hash_entry **hash,
e054468f 8916 struct plt_entry **plt_ent,
4ce794b7 8917 bfd_vma destination)
5bd4f169 8918{
721956f4
AM
8919 struct ppc_link_hash_entry *h = *hash;
8920 bfd_vma location;
8921 bfd_vma branch_offset;
8922 bfd_vma max_branch_offset;
4ce794b7 8923 enum elf_ppc64_reloc_type r_type;
5bd4f169 8924
721956f4
AM
8925 if (h != NULL)
8926 {
e054468f 8927 struct plt_entry *ent;
7fe2b9a6 8928 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM
8929 if (h->oh != NULL
8930 && h->oh->is_func_descriptor)
8931 fdh = ppc_follow_link (h->oh);
8387904d 8932
e054468f
AM
8933 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8934 if (ent->addend == rel->r_addend
8935 && ent->plt.offset != (bfd_vma) -1)
8936 {
8937 *hash = fdh;
8938 *plt_ent = ent;
8939 return ppc_stub_plt_call;
8940 }
5bd4f169 8941
7fe2b9a6
AM
8942 /* Here, we know we don't have a plt entry. If we don't have a
8943 either a defined function descriptor or a defined entry symbol
8944 in a regular object file, then it is pointless trying to make
8945 any other type of stub. */
8946 if (!((fdh->elf.root.type == bfd_link_hash_defined
8947 || fdh->elf.root.type == bfd_link_hash_defweak)
8948 && fdh->elf.root.u.def.section->output_section != NULL)
8949 && !((h->elf.root.type == bfd_link_hash_defined
8950 || h->elf.root.type == bfd_link_hash_defweak)
8951 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8952 return ppc_stub_none;
5d1634d7 8953 }
e054468f
AM
8954 else if (elf_local_got_ents (input_sec->owner) != NULL)
8955 {
8956 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
8957 struct plt_entry **local_plt = (struct plt_entry **)
8958 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
8959 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
8960
8961 if (local_plt[r_symndx] != NULL)
8962 {
8963 struct plt_entry *ent;
8964
8965 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
8966 if (ent->addend == rel->r_addend
8967 && ent->plt.offset != (bfd_vma) -1)
8968 {
8969 *plt_ent = ent;
8970 return ppc_stub_plt_call;
8971 }
8972 }
8973 }
5d1634d7 8974
721956f4
AM
8975 /* Determine where the call point is. */
8976 location = (input_sec->output_offset
8977 + input_sec->output_section->vma
8978 + rel->r_offset);
5d1634d7 8979
721956f4
AM
8980 branch_offset = destination - location;
8981 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8982
721956f4
AM
8983 /* Determine if a long branch stub is needed. */
8984 max_branch_offset = 1 << 25;
4ce794b7 8985 if (r_type != R_PPC64_REL24)
721956f4 8986 max_branch_offset = 1 << 15;
5d1634d7 8987
721956f4
AM
8988 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8989 /* We need a stub. Figure out whether a long_branch or plt_branch
8990 is needed later. */
8991 return ppc_stub_long_branch;
5d1634d7 8992
721956f4 8993 return ppc_stub_none;
5d1634d7
AM
8994}
8995
8996/* Build a .plt call stub. */
8997
4ce794b7 8998static inline bfd_byte *
176a0d42 8999build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
5d1634d7
AM
9000{
9001#define PPC_LO(v) ((v) & 0xffff)
9002#define PPC_HI(v) (((v) >> 16) & 0xffff)
9003#define PPC_HA(v) PPC_HI ((v) + 0x8000)
9004
ac2df442
AM
9005 if (PPC_HA (offset) != 0)
9006 {
176a0d42
AM
9007 if (r != NULL)
9008 {
9009 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9010 r[1].r_offset = r[0].r_offset + 8;
9011 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9012 r[1].r_addend = r[0].r_addend;
9013 if (PPC_HA (offset + 16) != PPC_HA (offset))
9014 {
9015 r[2].r_offset = r[1].r_offset + 4;
9016 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9017 r[2].r_addend = r[0].r_addend;
9018 }
9019 else
9020 {
9021 r[2].r_offset = r[1].r_offset + 8;
9022 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9023 r[2].r_addend = r[0].r_addend + 8;
9024 r[3].r_offset = r[2].r_offset + 4;
9025 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9026 r[3].r_addend = r[0].r_addend + 16;
9027 }
9028 }
ac2df442
AM
9029 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9030 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9031 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9032 if (PPC_HA (offset + 16) != PPC_HA (offset))
9033 {
9034 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9035 offset = 0;
9036 }
9037 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9038 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9039 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9040 bfd_put_32 (obfd, BCTR, p), p += 4;
9041 }
9042 else
9043 {
176a0d42
AM
9044 if (r != NULL)
9045 {
9046 r[0].r_offset += 4;
9047 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9048 if (PPC_HA (offset + 16) != PPC_HA (offset))
9049 {
9050 r[1].r_offset = r[0].r_offset + 4;
9051 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9052 r[1].r_addend = r[0].r_addend;
9053 }
9054 else
9055 {
9056 r[1].r_offset = r[0].r_offset + 8;
9057 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9058 r[1].r_addend = r[0].r_addend + 16;
9059 r[2].r_offset = r[1].r_offset + 4;
9060 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9061 r[2].r_addend = r[0].r_addend + 8;
9062 }
9063 }
ac2df442
AM
9064 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9065 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9066 if (PPC_HA (offset + 16) != PPC_HA (offset))
9067 {
9068 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9069 offset = 0;
9070 }
9071 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9072 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9073 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9074 bfd_put_32 (obfd, BCTR, p), p += 4;
9075 }
5d1634d7
AM
9076 return p;
9077}
9078
a7f2871e
AM
9079/* Build a special .plt call stub for __tls_get_addr. */
9080
9081#define LD_R11_0R3 0xe9630000
9082#define LD_R12_0R3 0xe9830000
9083#define MR_R0_R3 0x7c601b78
9084#define CMPDI_R11_0 0x2c2b0000
9085#define ADD_R3_R12_R13 0x7c6c6a14
9086#define BEQLR 0x4d820020
9087#define MR_R3_R0 0x7c030378
9088#define MFLR_R11 0x7d6802a6
9089#define STD_R11_0R1 0xf9610000
9090#define BCTRL 0x4e800421
9091#define LD_R11_0R1 0xe9610000
9092#define LD_R2_0R1 0xe8410000
9093#define MTLR_R11 0x7d6803a6
9094
9095static inline bfd_byte *
9096build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9097 Elf_Internal_Rela *r)
9098{
9099 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9100 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9101 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9102 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9103 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9104 bfd_put_32 (obfd, BEQLR, p), p += 4;
9105 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9106 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9107 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9108
9109 if (r != NULL)
9110 r[0].r_offset += 9 * 4;
9111 p = build_plt_stub (obfd, p, offset, r);
9112 bfd_put_32 (obfd, BCTRL, p - 4);
9113
9114 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9115 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9116 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9117 bfd_put_32 (obfd, BLR, p), p += 4;
9118
9119 return p;
9120}
9121
176a0d42
AM
9122static Elf_Internal_Rela *
9123get_relocs (asection *sec, int count)
9124{
9125 Elf_Internal_Rela *relocs;
9126 struct bfd_elf_section_data *elfsec_data;
9127
9128 elfsec_data = elf_section_data (sec);
9129 relocs = elfsec_data->relocs;
9130 if (relocs == NULL)
9131 {
9132 bfd_size_type relsize;
9133 relsize = sec->reloc_count * sizeof (*relocs);
9134 relocs = bfd_alloc (sec->owner, relsize);
9135 if (relocs == NULL)
9136 return NULL;
9137 elfsec_data->relocs = relocs;
9138 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
9139 * sizeof (Elf64_External_Rela));
9140 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
9141 sec->reloc_count = 0;
9142 }
9143 relocs += sec->reloc_count;
9144 sec->reloc_count += count;
9145 return relocs;
9146}
9147
b34976b6 9148static bfd_boolean
4ce794b7 9149ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 9150{
721956f4
AM
9151 struct ppc_stub_hash_entry *stub_entry;
9152 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM
9153 struct bfd_link_info *info;
9154 struct ppc_link_hash_table *htab;
721956f4
AM
9155 bfd_byte *loc;
9156 bfd_byte *p;
ee75fd95 9157 bfd_vma dest, off;
721956f4 9158 int size;
176a0d42 9159 Elf_Internal_Rela *r;
e054468f 9160 asection *plt;
5d1634d7 9161
721956f4
AM
9162 /* Massage our args to the form they really have. */
9163 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 9164 info = in_arg;
5d1634d7 9165
5d1634d7 9166 htab = ppc_hash_table (info);
4dfe6ac6
NC
9167 if (htab == NULL)
9168 return FALSE;
5d1634d7 9169
721956f4 9170 /* Make a note of the offset within the stubs for this entry. */
eea6121a 9171 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 9172 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 9173
4ce794b7 9174 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 9175 switch (stub_entry->stub_type)
5d1634d7 9176 {
721956f4 9177 case ppc_stub_long_branch:
ad8e1ba5 9178 case ppc_stub_long_branch_r2off:
721956f4 9179 /* Branches are relative. This is where we are going to. */
ee75fd95
AM
9180 off = dest = (stub_entry->target_value
9181 + stub_entry->target_section->output_offset
9182 + stub_entry->target_section->output_section->vma);
5d1634d7 9183
721956f4
AM
9184 /* And this is where we are coming from. */
9185 off -= (stub_entry->stub_offset
97b639ba
AM
9186 + stub_entry->stub_sec->output_offset
9187 + stub_entry->stub_sec->output_section->vma);
e86ce104 9188
ac2df442
AM
9189 size = 4;
9190 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM
9191 {
9192 bfd_vma r2off;
9193
9194 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9195 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 9196 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 9197 loc += 4;
ac2df442
AM
9198 size = 12;
9199 if (PPC_HA (r2off) != 0)
9200 {
9201 size = 16;
9202 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9203 loc += 4;
9204 }
97b639ba 9205 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 9206 loc += 4;
ac2df442 9207 off -= size - 4;
ad8e1ba5 9208 }
97b639ba 9209 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 9210
5c3dead3
AM
9211 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9212 {
9213 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9214 stub_entry->root.string);
9215 htab->stub_error = TRUE;
9216 return FALSE;
9217 }
ee75fd95
AM
9218
9219 if (info->emitrelocations)
9220 {
176a0d42
AM
9221 r = get_relocs (stub_entry->stub_sec, 1);
9222 if (r == NULL)
9223 return FALSE;
ee75fd95
AM
9224 r->r_offset = loc - stub_entry->stub_sec->contents;
9225 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9226 r->r_addend = dest;
9227 if (stub_entry->h != NULL)
9228 {
9229 struct elf_link_hash_entry **hashes;
9230 unsigned long symndx;
9231 struct ppc_link_hash_entry *h;
9232
9233 hashes = elf_sym_hashes (htab->stub_bfd);
9234 if (hashes == NULL)
9235 {
9236 bfd_size_type hsize;
9237
9238 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9239 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9240 if (hashes == NULL)
9241 return FALSE;
9242 elf_sym_hashes (htab->stub_bfd) = hashes;
9243 htab->stub_globals = 1;
9244 }
9245 symndx = htab->stub_globals++;
9246 h = stub_entry->h;
9247 hashes[symndx] = &h->elf;
9248 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9249 if (h->oh != NULL && h->oh->is_func)
b31867b6 9250 h = ppc_follow_link (h->oh);
ee75fd95
AM
9251 if (h->elf.root.u.def.section != stub_entry->target_section)
9252 /* H is an opd symbol. The addend must be zero. */
9253 r->r_addend = 0;
9254 else
9255 {
9256 off = (h->elf.root.u.def.value
9257 + h->elf.root.u.def.section->output_offset
9258 + h->elf.root.u.def.section->output_section->vma);
9259 r->r_addend -= off;
9260 }
9261 }
9262 }
721956f4 9263 break;
e86ce104 9264
721956f4 9265 case ppc_stub_plt_branch:
ad8e1ba5 9266 case ppc_stub_plt_branch_r2off:
721956f4
AM
9267 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9268 stub_entry->root.string + 9,
b34976b6 9269 FALSE, FALSE);
721956f4
AM
9270 if (br_entry == NULL)
9271 {
9272 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 9273 stub_entry->root.string);
b34976b6
AM
9274 htab->stub_error = TRUE;
9275 return FALSE;
721956f4
AM
9276 }
9277
176a0d42
AM
9278 dest = (stub_entry->target_value
9279 + stub_entry->target_section->output_offset
9280 + stub_entry->target_section->output_section->vma);
721956f4 9281
176a0d42 9282 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 9283 htab->brlt->contents + br_entry->offset);
721956f4 9284
f94498ff 9285 if (br_entry->iter == htab->stub_iteration)
721956f4 9286 {
f94498ff 9287 br_entry->iter = 0;
84f5d08e 9288
f94498ff 9289 if (htab->relbrlt != NULL)
84f5d08e 9290 {
f94498ff
AM
9291 /* Create a reloc for the branch lookup table entry. */
9292 Elf_Internal_Rela rela;
9293 bfd_byte *rl;
9294
9295 rela.r_offset = (br_entry->offset
9296 + htab->brlt->output_offset
9297 + htab->brlt->output_section->vma);
9298 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 9299 rela.r_addend = dest;
f94498ff
AM
9300
9301 rl = htab->relbrlt->contents;
9302 rl += (htab->relbrlt->reloc_count++
9303 * sizeof (Elf64_External_Rela));
9304 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9305 }
9306 else if (info->emitrelocations)
9307 {
176a0d42
AM
9308 r = get_relocs (htab->brlt, 1);
9309 if (r == NULL)
9310 return FALSE;
9311 /* brlt, being SEC_LINKER_CREATED does not go through the
9312 normal reloc processing. Symbols and offsets are not
9313 translated from input file to output file form, so
9314 set up the offset per the output file. */
f94498ff
AM
9315 r->r_offset = (br_entry->offset
9316 + htab->brlt->output_offset
9317 + htab->brlt->output_section->vma);
9318 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 9319 r->r_addend = dest;
84f5d08e 9320 }
84f5d08e 9321 }
721956f4 9322
176a0d42
AM
9323 dest = (br_entry->offset
9324 + htab->brlt->output_offset
9325 + htab->brlt->output_section->vma);
9326
9327 off = (dest
4ce794b7 9328 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 9329 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 9330
ad8e1ba5 9331 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM
9332 {
9333 (*_bfd_error_handler)
e86ce104 9334 (_("linkage table error against `%s'"),
721956f4 9335 stub_entry->root.string);
5d1634d7 9336 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
9337 htab->stub_error = TRUE;
9338 return FALSE;
5d1634d7 9339 }
41bd81ab 9340
176a0d42
AM
9341 if (info->emitrelocations)
9342 {
9343 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9344 if (r == NULL)
9345 return FALSE;
9346 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM
9347 if (bfd_big_endian (info->output_bfd))
9348 r[0].r_offset += 2;
176a0d42
AM
9349 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9350 r[0].r_offset += 4;
9351 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9352 r[0].r_addend = dest;
9353 if (PPC_HA (off) != 0)
9354 {
9355 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9356 r[1].r_offset = r[0].r_offset + 4;
9357 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9358 r[1].r_addend = r[0].r_addend;
9359 }
9360 }
9361
ad8e1ba5
AM
9362 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9363 {
176a0d42 9364 if (PPC_HA (off) != 0)
ac2df442
AM
9365 {
9366 size = 16;
176a0d42 9367 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 9368 loc += 4;
176a0d42 9369 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
9370 }
9371 else
9372 {
9373 size = 12;
176a0d42 9374 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 9375 }
ad8e1ba5
AM
9376 }
9377 else
9378 {
9379 bfd_vma r2off;
9380
9381 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9382 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 9383 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 9384 loc += 4;
ac2df442 9385 size = 20;
176a0d42 9386 if (PPC_HA (off) != 0)
ac2df442
AM
9387 {
9388 size += 4;
176a0d42 9389 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 9390 loc += 4;
176a0d42 9391 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
9392 loc += 4;
9393 }
9394 else
9395 {
176a0d42 9396 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM
9397 loc += 4;
9398 }
9399
9400 if (PPC_HA (r2off) != 0)
9401 {
9402 size += 4;
9403 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9404 loc += 4;
9405 }
97b639ba 9406 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
9407 }
9408 loc += 4;
97b639ba 9409 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 9410 loc += 4;
97b639ba 9411 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 9412 break;
5d1634d7 9413
721956f4 9414 case ppc_stub_plt_call:
e054468f 9415 if (stub_entry->h != NULL
b31867b6
AM
9416 && stub_entry->h->is_func_descriptor
9417 && stub_entry->h->oh != NULL)
c862ae31 9418 {
b31867b6
AM
9419 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9420
9421 /* If the old-ABI "dot-symbol" is undefined make it weak so
9422 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9423 FIXME: We used to define the symbol on one of the call
9424 stubs instead, which is why we test symbol section id
9425 against htab->top_id in various places. Likely all
9426 these checks could now disappear. */
9427 if (fh->elf.root.type == bfd_link_hash_undefined)
9428 fh->elf.root.type = bfd_link_hash_undefweak;
c862ae31
AM
9429 }
9430
721956f4 9431 /* Now build the stub. */
e054468f 9432 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 9433 if (dest >= (bfd_vma) -2)
721956f4
AM
9434 abort ();
9435
e054468f 9436 plt = htab->plt;
25f23106
AM
9437 if (!htab->elf.dynamic_sections_created
9438 || stub_entry->h == NULL
9439 || stub_entry->h->elf.dynindx == -1)
e054468f
AM
9440 plt = htab->iplt;
9441
9442 dest += plt->output_offset + plt->output_section->vma;
9443
9444 if (stub_entry->h == NULL
9445 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9446 {
9447 Elf_Internal_Rela rela;
9448 bfd_byte *rl;
9449
9450 rela.r_offset = dest;
25f23106 9451 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
e054468f
AM
9452 rela.r_addend = (stub_entry->target_value
9453 + stub_entry->target_section->output_offset
9454 + stub_entry->target_section->output_section->vma);
9455
25f23106
AM
9456 rl = (htab->reliplt->contents
9457 + (htab->reliplt->reloc_count++
9458 * sizeof (Elf64_External_Rela)));
9459 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM
9460 stub_entry->plt_ent->plt.offset |= 1;
9461 }
176a0d42
AM
9462
9463 off = (dest
e054468f 9464 - elf_gp (plt->output_section->owner)
176a0d42 9465 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 9466
ad8e1ba5 9467 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM
9468 {
9469 (*_bfd_error_handler)
9470 (_("linkage table error against `%s'"),
e054468f
AM
9471 stub_entry->h != NULL
9472 ? stub_entry->h->elf.root.root.string
9473 : "<local sym>");
721956f4 9474 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
9475 htab->stub_error = TRUE;
9476 return FALSE;
721956f4
AM
9477 }
9478
176a0d42
AM
9479 r = NULL;
9480 if (info->emitrelocations)
9481 {
9482 r = get_relocs (stub_entry->stub_sec,
9483 (2 + (PPC_HA (off) != 0)
9484 + (PPC_HA (off + 16) == PPC_HA (off))));
9485 if (r == NULL)
9486 return FALSE;
9487 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM
9488 if (bfd_big_endian (info->output_bfd))
9489 r[0].r_offset += 2;
176a0d42
AM
9490 r[0].r_addend = dest;
9491 }
a7f2871e
AM
9492 if (stub_entry->h != NULL
9493 && (stub_entry->h == htab->tls_get_addr_fd
9494 || stub_entry->h == htab->tls_get_addr)
9495 && !htab->no_tls_get_addr_opt)
9496 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9497 else
9498 p = build_plt_stub (htab->stub_bfd, loc, off, r);
721956f4
AM
9499 size = p - loc;
9500 break;
9501
9502 default:
9503 BFD_FAIL ();
b34976b6 9504 return FALSE;
721956f4
AM
9505 }
9506
eea6121a 9507 stub_entry->stub_sec->size += size;
97b639ba 9508
ee75fd95 9509 if (htab->emit_stub_syms)
97b639ba
AM
9510 {
9511 struct elf_link_hash_entry *h;
ee75fd95
AM
9512 size_t len1, len2;
9513 char *name;
9514 const char *const stub_str[] = { "long_branch",
9515 "long_branch_r2off",
9516 "plt_branch",
9517 "plt_branch_r2off",
9518 "plt_call" };
9519
9520 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9521 len2 = strlen (stub_entry->root.string);
9522 name = bfd_malloc (len1 + len2 + 2);
9523 if (name == NULL)
9524 return FALSE;
9525 memcpy (name, stub_entry->root.string, 9);
9526 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9527 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9528 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM
9529 if (h == NULL)
9530 return FALSE;
9531 if (h->root.type == bfd_link_hash_new)
9532 {
9533 h->root.type = bfd_link_hash_defined;
9534 h->root.u.def.section = stub_entry->stub_sec;
9535 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM
9536 h->ref_regular = 1;
9537 h->def_regular = 1;
9538 h->ref_regular_nonweak = 1;
9539 h->forced_local = 1;
9540 h->non_elf = 0;
97b639ba
AM
9541 }
9542 }
9543
b34976b6 9544 return TRUE;
721956f4
AM
9545}
9546
9547/* As above, but don't actually build the stub. Just bump offset so
9548 we know stub section sizes, and select plt_branch stubs where
9549 long_branch stubs won't do. */
9550
b34976b6 9551static bfd_boolean
4ce794b7 9552ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM
9553{
9554 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 9555 struct bfd_link_info *info;
721956f4
AM
9556 struct ppc_link_hash_table *htab;
9557 bfd_vma off;
9558 int size;
9559
9560 /* Massage our args to the form they really have. */
9561 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM
9562 info = in_arg;
9563
9564 htab = ppc_hash_table (info);
4dfe6ac6
NC
9565 if (htab == NULL)
9566 return FALSE;
721956f4
AM
9567
9568 if (stub_entry->stub_type == ppc_stub_plt_call)
9569 {
e054468f
AM
9570 asection *plt;
9571 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 9572 if (off >= (bfd_vma) -2)
411e1bfb 9573 abort ();
e054468f 9574 plt = htab->plt;
25f23106
AM
9575 if (!htab->elf.dynamic_sections_created
9576 || stub_entry->h == NULL
9577 || stub_entry->h->elf.dynindx == -1)
e054468f
AM
9578 plt = htab->iplt;
9579 off += (plt->output_offset
9580 + plt->output_section->vma
9581 - elf_gp (plt->output_section->owner)
ad8e1ba5 9582 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 9583
ad8e1ba5 9584 size = PLT_CALL_STUB_SIZE;
ac2df442
AM
9585 if (PPC_HA (off) == 0)
9586 size -= 4;
4ce794b7 9587 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4 9588 size += 4;
a7f2871e
AM
9589 if (stub_entry->h != NULL
9590 && (stub_entry->h == htab->tls_get_addr_fd
9591 || stub_entry->h == htab->tls_get_addr)
9592 && !htab->no_tls_get_addr_opt)
9593 size += 13 * 4;
176a0d42
AM
9594 if (info->emitrelocations)
9595 {
9596 stub_entry->stub_sec->reloc_count
9597 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9598 stub_entry->stub_sec->flags |= SEC_RELOC;
9599 }
721956f4
AM
9600 }
9601 else
9602 {
ad8e1ba5
AM
9603 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9604 variants. */
ac2df442
AM
9605 bfd_vma r2off = 0;
9606
721956f4
AM
9607 off = (stub_entry->target_value
9608 + stub_entry->target_section->output_offset
9609 + stub_entry->target_section->output_section->vma);
eea6121a 9610 off -= (stub_entry->stub_sec->size
721956f4
AM
9611 + stub_entry->stub_sec->output_offset
9612 + stub_entry->stub_sec->output_section->vma);
9613
ad8e1ba5
AM
9614 /* Reset the stub type from the plt variant in case we now
9615 can reach with a shorter stub. */
9616 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9617 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9618
9619 size = 4;
9620 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9621 {
ac2df442
AM
9622 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9623 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9624 size = 12;
9625 if (PPC_HA (r2off) != 0)
9626 size = 16;
9627 off -= size - 4;
ad8e1ba5
AM
9628 }
9629
9630 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM
9631 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9632 {
9633 struct ppc_branch_hash_entry *br_entry;
9634
9635 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9636 stub_entry->root.string + 9,
b34976b6 9637 TRUE, FALSE);
721956f4
AM
9638 if (br_entry == NULL)
9639 {
9640 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 9641 stub_entry->root.string);
b34976b6
AM
9642 htab->stub_error = TRUE;
9643 return FALSE;
721956f4
AM
9644 }
9645
9646 if (br_entry->iter != htab->stub_iteration)
9647 {
9648 br_entry->iter = htab->stub_iteration;
eea6121a
AM
9649 br_entry->offset = htab->brlt->size;
9650 htab->brlt->size += 8;
63bc6f6c 9651
ee75fd95 9652 if (htab->relbrlt != NULL)
eea6121a 9653 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM
9654 else if (info->emitrelocations)
9655 {
9656 htab->brlt->reloc_count += 1;
9657 htab->brlt->flags |= SEC_RELOC;
9658 }
721956f4 9659 }
ad8e1ba5
AM
9660
9661 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM
9662 off = (br_entry->offset
9663 + htab->brlt->output_offset
9664 + htab->brlt->output_section->vma
9665 - elf_gp (htab->brlt->output_section->owner)
9666 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9667
176a0d42
AM
9668 if (info->emitrelocations)
9669 {
9670 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9671 stub_entry->stub_sec->flags |= SEC_RELOC;
9672 }
9673
ac2df442
AM
9674 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9675 {
9676 size = 12;
176a0d42 9677 if (PPC_HA (off) != 0)
ac2df442
AM
9678 size = 16;
9679 }
9680 else
9681 {
9682 size = 20;
176a0d42 9683 if (PPC_HA (off) != 0)
ac2df442
AM
9684 size += 4;
9685
9686 if (PPC_HA (r2off) != 0)
9687 size += 4;
9688 }
721956f4 9689 }
84f5d08e
AM
9690 else if (info->emitrelocations)
9691 {
9692 stub_entry->stub_sec->reloc_count += 1;
9693 stub_entry->stub_sec->flags |= SEC_RELOC;
9694 }
721956f4
AM
9695 }
9696
eea6121a 9697 stub_entry->stub_sec->size += size;
b34976b6 9698 return TRUE;
721956f4
AM
9699}
9700
9701/* Set up various things so that we can make a list of input sections
9702 for each output section included in the link. Returns -1 on error,
cedb70c5 9703 0 when no stubs will be needed, and 1 on success. */
721956f4
AM
9704
9705int
927be08e
AM
9706ppc64_elf_setup_section_lists
9707 (struct bfd_link_info *info,
9708 asection *(*add_stub_section) (const char *, asection *),
9709 void (*layout_sections_again) (void))
721956f4
AM
9710{
9711 bfd *input_bfd;
734b6cf9 9712 int top_id, top_index, id;
721956f4 9713 asection *section;
734b6cf9 9714 asection **input_list;
721956f4
AM
9715 bfd_size_type amt;
9716 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9717
4dfe6ac6
NC
9718 if (htab == NULL)
9719 return -1;
927be08e
AM
9720 /* Stash our params away. */
9721 htab->add_stub_section = add_stub_section;
9722 htab->layout_sections_again = layout_sections_again;
4c52953f 9723
4ce794b7 9724 if (htab->brlt == NULL)
721956f4
AM
9725 return 0;
9726
1e2f5b6e 9727 /* Find the top input section id. */
3d6f9012 9728 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM
9729 input_bfd != NULL;
9730 input_bfd = input_bfd->link_next)
9731 {
721956f4
AM
9732 for (section = input_bfd->sections;
9733 section != NULL;
9734 section = section->next)
9735 {
9736 if (top_id < section->id)
9737 top_id = section->id;
9738 }
9739 }
721956f4 9740
8f3bab57 9741 htab->top_id = top_id;
721956f4 9742 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 9743 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM
9744 if (htab->stub_group == NULL)
9745 return -1;
9746
3d6f9012
AM
9747 /* Set toc_off for com, und, abs and ind sections. */
9748 for (id = 0; id < 3; id++)
9749 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 9750
734b6cf9
AM
9751 /* We can't use output_bfd->section_count here to find the top output
9752 section index as some sections may have been removed, and
8423293d 9753 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 9754 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM
9755 section != NULL;
9756 section = section->next)
9757 {
9758 if (top_index < section->index)
9759 top_index = section->index;
9760 }
9761
9762 htab->top_index = top_index;
9763 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 9764 input_list = bfd_zmalloc (amt);
734b6cf9
AM
9765 htab->input_list = input_list;
9766 if (input_list == NULL)
9767 return -1;
9768
721956f4
AM
9769 return 1;
9770}
9771
927be08e
AM
9772/* Set up for first pass at multitoc partitioning. */
9773
9774void
9775ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
9776{
9777 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9778
9779 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
9780 htab->toc_curr = elf_gp (info->output_bfd);
9781 htab->toc_bfd = NULL;
9782 htab->toc_first_sec = NULL;
9783}
9784
e717da7e
AM
9785/* The linker repeatedly calls this function for each TOC input section
9786 and linker generated GOT section. Group input bfds such that the toc
927be08e 9787 within a group is less than 64k in size. */
ad8e1ba5 9788
927be08e 9789bfd_boolean
4ce794b7 9790ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM
9791{
9792 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e 9793 bfd_vma addr, off;
ad8e1ba5 9794
4dfe6ac6
NC
9795 if (htab == NULL)
9796 return FALSE;
9797
927be08e 9798 if (!htab->second_toc_pass)
4c52953f 9799 {
927be08e 9800 /* Keep track of the first .toc or .got section for this input bfd. */
bf102f86
AM
9801 if (htab->toc_bfd != isec->owner)
9802 {
9803 htab->toc_bfd = isec->owner;
9804 htab->toc_first_sec = isec;
9805 }
927be08e 9806
bf102f86
AM
9807 addr = isec->output_offset + isec->output_section->vma;
9808 off = addr - htab->toc_curr;
4c52953f 9809 if (off + isec->size > 0x10000)
bf102f86
AM
9810 {
9811 addr = (htab->toc_first_sec->output_offset
9812 + htab->toc_first_sec->output_section->vma);
9813 htab->toc_curr = addr;
9814 }
99877b66 9815
927be08e
AM
9816 /* toc_curr is the base address of this toc group. Set elf_gp
9817 for the input section to be the offset relative to the
9818 output toc base plus 0x8000. Making the input elf_gp an
9819 offset allows us to move the toc as a whole without
9820 recalculating input elf_gp. */
9821 off = htab->toc_curr - elf_gp (isec->output_section->owner);
9822 off += TOC_BASE_OFF;
9823
9824 /* Die if someone uses a linker script that doesn't keep input
9825 file .toc and .got together. */
9826 if (elf_gp (isec->owner) != 0
9827 && elf_gp (isec->owner) != off)
9828 return FALSE;
9829
9830 elf_gp (isec->owner) = off;
9831 return TRUE;
4c52953f 9832 }
927be08e
AM
9833
9834 /* During the second pass toc_first_sec points to the start of
9835 a toc group, and toc_curr is used to track the old elf_gp.
9836 We use toc_bfd to ensure we only look at each bfd once. */
9837 if (htab->toc_bfd == isec->owner)
9838 return TRUE;
9839 htab->toc_bfd = isec->owner;
9840
9841 if (htab->toc_first_sec == NULL
9842 || htab->toc_curr != elf_gp (isec->owner))
9843 {
9844 htab->toc_curr = elf_gp (isec->owner);
9845 htab->toc_first_sec = isec;
9846 }
9847 addr = (htab->toc_first_sec->output_offset
9848 + htab->toc_first_sec->output_section->vma);
9849 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
9850 elf_gp (isec->owner) = off;
9851
9852 return TRUE;
ad8e1ba5
AM
9853}
9854
0b8bcf0d 9855/* This function merges got entries in the same toc group. */
ad8e1ba5 9856
927be08e
AM
9857static void
9858merge_got_entries (struct got_entry **pent)
9859{
9860 struct got_entry *ent, *ent2;
9861
0b8bcf0d
AM
9862 for (ent = *pent; ent != NULL; ent = ent->next)
9863 if (!ent->is_indirect)
9864 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9865 if (!ent2->is_indirect
9866 && ent2->addend == ent->addend
9867 && ent2->tls_type == ent->tls_type
9868 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9869 {
9870 ent2->is_indirect = TRUE;
9871 ent2->got.ent = ent;
9872 }
927be08e
AM
9873}
9874
9875/* Called via elf_link_hash_traverse to merge GOT entries for global
9876 symbol H. */
9877
9878static bfd_boolean
9879merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9880{
9881 if (h->root.type == bfd_link_hash_indirect)
9882 return TRUE;
9883
9884 if (h->root.type == bfd_link_hash_warning)
9885 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9886
9887 merge_got_entries (&h->got.glist);
9888
9889 return TRUE;
9890}
9891
9892/* Called via elf_link_hash_traverse to allocate GOT entries for global
9893 symbol H. */
9894
9895static bfd_boolean
9896reallocate_got (struct elf_link_hash_entry *h, void *inf)
9897{
9898 struct got_entry *gent;
9899
9900 if (h->root.type == bfd_link_hash_indirect)
9901 return TRUE;
9902
9903 if (h->root.type == bfd_link_hash_warning)
9904 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9905
9906 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9907 if (!gent->is_indirect)
9908 allocate_got (h, (struct bfd_link_info *) inf, gent);
9909 return TRUE;
9910}
9911
9912/* Called on the first multitoc pass after the last call to
9913 ppc64_elf_next_toc_section. This function removes duplicate GOT
9914 entries. */
9915
9916bfd_boolean
9917ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM
9918{
9919 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM
9920 struct bfd *ibfd, *ibfd2;
9921 bfd_boolean done_something;
9922
9923 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 9924
927be08e
AM
9925 /* Merge local got entries within a toc group. */
9926 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9927 {
9928 struct got_entry **lgot_ents;
9929 struct got_entry **end_lgot_ents;
9930 Elf_Internal_Shdr *symtab_hdr;
9931 bfd_size_type locsymcount;
4c52953f 9932
927be08e
AM
9933 if (!is_ppc64_elf (ibfd))
9934 continue;
9935
9936 lgot_ents = elf_local_got_ents (ibfd);
9937 if (!lgot_ents)
9938 continue;
9939
9940 symtab_hdr = &elf_symtab_hdr (ibfd);
9941 locsymcount = symtab_hdr->sh_info;
9942 end_lgot_ents = lgot_ents + locsymcount;
9943
9944 for (; lgot_ents < end_lgot_ents; ++lgot_ents)
9945 merge_got_entries (lgot_ents);
9946 }
9947
9948 /* And the same for global sym got entries. */
9949 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
9950
9951 /* And tlsld_got. */
9952 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9953 {
9954 struct got_entry *ent, *ent2;
9955
9956 if (!is_ppc64_elf (ibfd))
9957 continue;
9958
9959 ent = ppc64_tlsld_got (ibfd);
9960 if (!ent->is_indirect
9961 && ent->got.offset != (bfd_vma) -1)
9962 {
9963 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
9964 {
9965 if (!is_ppc64_elf (ibfd2))
9966 continue;
9967
9968 ent2 = ppc64_tlsld_got (ibfd2);
9969 if (!ent2->is_indirect
9970 && ent2->got.offset != (bfd_vma) -1
9971 && elf_gp (ibfd2) == elf_gp (ibfd))
9972 {
9973 ent2->is_indirect = TRUE;
9974 ent2->got.ent = ent;
9975 }
9976 }
9977 }
9978 }
9979
9980 /* Zap sizes of got sections. */
9981 htab->reliplt->rawsize = htab->reliplt->size;
9982 htab->reliplt->size -= htab->got_reli_size;
9983 htab->got_reli_size = 0;
9984
9985 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9986 {
9987 asection *got, *relgot;
9988
9989 if (!is_ppc64_elf (ibfd))
9990 continue;
9991
9992 got = ppc64_elf_tdata (ibfd)->got;
9993 if (got != NULL)
9994 {
9995 got->rawsize = got->size;
9996 got->size = 0;
9997 relgot = ppc64_elf_tdata (ibfd)->relgot;
9998 relgot->rawsize = relgot->size;
9999 relgot->size = 0;
10000 }
10001 }
10002
10003 /* Now reallocate the got, local syms first. We don't need to
10004 allocate section contents again since we never increase size. */
10005 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10006 {
10007 struct got_entry **lgot_ents;
10008 struct got_entry **end_lgot_ents;
10009 struct plt_entry **local_plt;
10010 struct plt_entry **end_local_plt;
f961d9dd 10011 unsigned char *lgot_masks;
927be08e
AM
10012 bfd_size_type locsymcount;
10013 Elf_Internal_Shdr *symtab_hdr;
10014 asection *s, *srel;
10015
10016 if (!is_ppc64_elf (ibfd))
10017 continue;
10018
10019 lgot_ents = elf_local_got_ents (ibfd);
10020 if (!lgot_ents)
10021 continue;
10022
10023 symtab_hdr = &elf_symtab_hdr (ibfd);
10024 locsymcount = symtab_hdr->sh_info;
10025 end_lgot_ents = lgot_ents + locsymcount;
10026 local_plt = (struct plt_entry **) end_lgot_ents;
10027 end_local_plt = local_plt + locsymcount;
f961d9dd 10028 lgot_masks = (unsigned char *) end_local_plt;
927be08e
AM
10029 s = ppc64_elf_tdata (ibfd)->got;
10030 srel = ppc64_elf_tdata (ibfd)->relgot;
10031 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10032 {
10033 struct got_entry *ent;
10034
10035 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10036 if (!ent->is_indirect)
10037 {
10038 unsigned int num = 1;
10039 ent->got.offset = s->size;
10040 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10041 num = 2;
10042 s->size += num * 8;
10043 if (info->shared)
10044 srel->size += num * sizeof (Elf64_External_Rela);
10045 else if ((*lgot_masks & PLT_IFUNC) != 0)
10046 {
10047 htab->reliplt->size
10048 += num * sizeof (Elf64_External_Rela);
10049 htab->got_reli_size
10050 += num * sizeof (Elf64_External_Rela);
10051 }
10052 }
10053 }
10054 }
10055
10056 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10057
10058 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10059 {
10060 struct got_entry *ent;
10061
10062 if (!is_ppc64_elf (ibfd))
10063 continue;
10064
10065 ent = ppc64_tlsld_got (ibfd);
10066 if (!ent->is_indirect
10067 && ent->got.offset != (bfd_vma) -1)
10068 {
10069 asection *s = ppc64_elf_tdata (ibfd)->got;
10070 ent->got.offset = s->size;
10071 s->size += 16;
10072 if (info->shared)
10073 {
10074 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10075 srel->size += sizeof (Elf64_External_Rela);
10076 }
10077 }
10078 }
10079
10080 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10081 if (!done_something)
10082 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10083 {
10084 asection *got;
10085
10086 if (!is_ppc64_elf (ibfd))
10087 continue;
10088
10089 got = ppc64_elf_tdata (ibfd)->got;
10090 if (got != NULL)
10091 {
10092 done_something = got->rawsize != got->size;
10093 if (done_something)
10094 break;
10095 }
10096 }
10097
10098 if (done_something)
10099 (*htab->layout_sections_again) ();
10100
10101 /* Set up for second pass over toc sections to recalculate elf_gp
10102 on input sections. */
10103 htab->toc_bfd = NULL;
10104 htab->toc_first_sec = NULL;
10105 htab->second_toc_pass = TRUE;
10106 return done_something;
10107}
10108
10109/* Called after second pass of multitoc partitioning. */
10110
10111void
10112ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10113{
10114 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10115
4dfe6ac6
NC
10116 if (htab == NULL)
10117 return;
10118
927be08e
AM
10119 /* After the second pass, toc_curr tracks the TOC offset used
10120 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 10121 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM
10122}
10123
9b5ecbd0
AM
10124/* No toc references were found in ISEC. If the code in ISEC makes no
10125 calls, then there's no need to use toc adjusting stubs when branching
10126 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM
10127 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10128 needed, and 2 if a cyclical call-graph was found but no other reason
10129 for a stub was detected. If called from the top level, a return of
10130 2 means the same as a return of 0. */
9b5ecbd0
AM
10131
10132static int
4ce794b7 10133toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 10134{
4c52953f
AM
10135 Elf_Internal_Rela *relstart, *rel;
10136 Elf_Internal_Sym *local_syms;
9b5ecbd0 10137 int ret;
4c52953f 10138 struct ppc_link_hash_table *htab;
9b5ecbd0 10139
772119ce
AM
10140 /* We know none of our code bearing sections will need toc stubs. */
10141 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10142 return 0;
10143
eea6121a 10144 if (isec->size == 0)
082c50f8
AM
10145 return 0;
10146
4c52953f
AM
10147 if (isec->output_section == NULL)
10148 return 0;
10149
4c52953f
AM
10150 if (isec->reloc_count == 0)
10151 return 0;
10152
10153 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10154 info->keep_memory);
10155 if (relstart == NULL)
10156 return -1;
10157
10158 /* Look for branches to outside of this section. */
10159 local_syms = NULL;
10160 ret = 0;
10161 htab = ppc_hash_table (info);
4dfe6ac6
NC
10162 if (htab == NULL)
10163 return -1;
10164
4c52953f 10165 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 10166 {
4c52953f
AM
10167 enum elf_ppc64_reloc_type r_type;
10168 unsigned long r_symndx;
10169 struct elf_link_hash_entry *h;
90aecf7a 10170 struct ppc_link_hash_entry *eh;
4c52953f
AM
10171 Elf_Internal_Sym *sym;
10172 asection *sym_sec;
74f0fb50 10173 struct _opd_sec_data *opd;
4c52953f
AM
10174 bfd_vma sym_value;
10175 bfd_vma dest;
10176
10177 r_type = ELF64_R_TYPE (rel->r_info);
10178 if (r_type != R_PPC64_REL24
10179 && r_type != R_PPC64_REL14
10180 && r_type != R_PPC64_REL14_BRTAKEN
10181 && r_type != R_PPC64_REL14_BRNTAKEN)
10182 continue;
10183
10184 r_symndx = ELF64_R_SYM (rel->r_info);
10185 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10186 isec->owner))
9b5ecbd0 10187 {
4c52953f
AM
10188 ret = -1;
10189 break;
9b5ecbd0 10190 }
9b5ecbd0 10191
2917689a 10192 /* Calls to dynamic lib functions go through a plt call stub
90aecf7a
AM
10193 that uses r2. */
10194 eh = (struct ppc_link_hash_entry *) h;
10195 if (eh != NULL
10196 && (eh->elf.plt.plist != NULL
10197 || (eh->oh != NULL
b31867b6 10198 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
2917689a 10199 {
90aecf7a
AM
10200 ret = 1;
10201 break;
2917689a
AM
10202 }
10203
90aecf7a
AM
10204 if (sym_sec == NULL)
10205 /* Ignore other undefined symbols. */
10206 continue;
10207
2917689a
AM
10208 /* Assume branches to other sections not included in the link need
10209 stubs too, to cover -R and absolute syms. */
4c52953f
AM
10210 if (sym_sec->output_section == NULL)
10211 {
10212 ret = 1;
10213 break;
10214 }
10215
10216 if (h == NULL)
10217 sym_value = sym->st_value;
10218 else
10219 {
10220 if (h->root.type != bfd_link_hash_defined
10221 && h->root.type != bfd_link_hash_defweak)
10222 abort ();
10223 sym_value = h->root.u.def.value;
10224 }
10225 sym_value += rel->r_addend;
10226
10227 /* If this branch reloc uses an opd sym, find the code section. */
74f0fb50
AM
10228 opd = get_opd_info (sym_sec);
10229 if (opd != NULL)
4c52953f 10230 {
74f0fb50 10231 if (h == NULL && opd->adjust != NULL)
4c52953f
AM
10232 {
10233 long adjust;
10234
74f0fb50 10235 adjust = opd->adjust[sym->st_value / 8];
4c52953f
AM
10236 if (adjust == -1)
10237 /* Assume deleted functions won't ever be called. */
10238 continue;
10239 sym_value += adjust;
10240 }
10241
10242 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10243 if (dest == (bfd_vma) -1)
10244 continue;
10245 }
10246 else
10247 dest = (sym_value
10248 + sym_sec->output_offset
10249 + sym_sec->output_section->vma);
10250
10251 /* Ignore branch to self. */
10252 if (sym_sec == isec)
10253 continue;
10254
10255 /* If the called function uses the toc, we need a stub. */
10256 if (sym_sec->has_toc_reloc
10257 || sym_sec->makes_toc_func_call)
10258 {
10259 ret = 1;
10260 break;
10261 }
10262
10263 /* Assume any branch that needs a long branch stub might in fact
10264 need a plt_branch stub. A plt_branch stub uses r2. */
10265 else if (dest - (isec->output_offset
10266 + isec->output_section->vma
10267 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM
10268 {
10269 ret = 1;
10270 break;
10271 }
4c52953f
AM
10272
10273 /* If calling back to a section in the process of being tested, we
10274 can't say for sure that no toc adjusting stubs are needed, so
10275 don't return zero. */
10276 else if (sym_sec->call_check_in_progress)
10277 ret = 2;
10278
10279 /* Branches to another section that itself doesn't have any TOC
10280 references are OK. Recursively call ourselves to check. */
10281 else if (sym_sec->id <= htab->top_id
10282 && htab->stub_group[sym_sec->id].toc_off == 0)
10283 {
10284 int recur;
10285
10286 /* Mark current section as indeterminate, so that other
10287 sections that call back to current won't be marked as
10288 known. */
10289 isec->call_check_in_progress = 1;
10290 recur = toc_adjusting_stub_needed (info, sym_sec);
10291 isec->call_check_in_progress = 0;
10292
10293 if (recur < 0)
10294 {
10295 /* An error. Exit. */
10296 ret = -1;
10297 break;
10298 }
10299 else if (recur <= 1)
10300 {
10301 /* Known result. Mark as checked and set section flag. */
10302 htab->stub_group[sym_sec->id].toc_off = 1;
10303 if (recur != 0)
10304 {
10305 sym_sec->makes_toc_func_call = 1;
10306 ret = 1;
10307 break;
10308 }
10309 }
10310 else
10311 {
10312 /* Unknown result. Continue checking. */
10313 ret = 2;
10314 }
10315 }
9b5ecbd0
AM
10316 }
10317
4c52953f 10318 if (local_syms != NULL
0ffa91dd 10319 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
4c52953f
AM
10320 free (local_syms);
10321 if (elf_section_data (isec)->relocs != relstart)
10322 free (relstart);
10323
9b5ecbd0
AM
10324 return ret;
10325}
10326
721956f4
AM
10327/* The linker repeatedly calls this function for each input section,
10328 in the order that input sections are linked into output sections.
10329 Build lists of input sections to determine groupings between which
10330 we may insert linker stubs. */
10331
9b5ecbd0 10332bfd_boolean
4ce794b7 10333ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM
10334{
10335 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10336
4dfe6ac6
NC
10337 if (htab == NULL)
10338 return FALSE;
10339
734b6cf9
AM
10340 if ((isec->output_section->flags & SEC_CODE) != 0
10341 && isec->output_section->index <= htab->top_index)
721956f4 10342 {
734b6cf9 10343 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 10344 /* Steal the link_sec pointer for our list. */
721956f4 10345#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM
10346 /* This happens to make the list in reverse order,
10347 which is what we want. */
734b6cf9
AM
10348 PREV_SEC (isec) = *list;
10349 *list = isec;
721956f4 10350 }
ad8e1ba5 10351
4c52953f 10352 if (htab->multi_toc_needed)
9b5ecbd0 10353 {
4c52953f
AM
10354 /* If a code section has a function that uses the TOC then we need
10355 to use the right TOC (obviously). Also, make sure that .opd gets
10356 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM
10357 can't find their function symbol (shouldn't ever happen now).
10358 Also specially treat .fixup for the linux kernel. .fixup
10359 contains branches, but only back to the function that hit an
10360 exception. */
10361 if (isec->has_toc_reloc
10362 || (isec->flags & SEC_CODE) == 0
10363 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM
10364 {
10365 if (elf_gp (isec->owner) != 0)
10366 htab->toc_curr = elf_gp (isec->owner);
10367 }
10368 else if (htab->stub_group[isec->id].toc_off == 0)
10369 {
10370 int ret = toc_adjusting_stub_needed (info, isec);
10371 if (ret < 0)
10372 return FALSE;
10373 else
10374 isec->makes_toc_func_call = ret & 1;
10375 }
9b5ecbd0 10376 }
ad8e1ba5
AM
10377
10378 /* Functions that don't use the TOC can belong in any TOC group.
10379 Use the last TOC base. This happens to make _init and _fini
10380 pasting work. */
10381 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 10382 return TRUE;
721956f4
AM
10383}
10384
10385/* See whether we can group stub sections together. Grouping stub
10386 sections may result in fewer stubs. More importantly, we need to
10387 put all .init* and .fini* stubs at the beginning of the .init or
10388 .fini output sections respectively, because glibc splits the
10389 _init and _fini functions into multiple parts. Putting a stub in
10390 the middle of a function is not a good idea. */
10391
10392static void
4ce794b7
AM
10393group_sections (struct ppc_link_hash_table *htab,
10394 bfd_size_type stub_group_size,
10395 bfd_boolean stubs_always_before_branch)
721956f4 10396{
7c8fe5c4
AM
10397 asection **list;
10398 bfd_size_type stub14_group_size;
10399 bfd_boolean suppress_size_errors;
10400
10401 suppress_size_errors = FALSE;
10402 stub14_group_size = stub_group_size;
10403 if (stub_group_size == 1)
10404 {
10405 /* Default values. */
10406 if (stubs_always_before_branch)
10407 {
10408 stub_group_size = 0x1e00000;
10409 stub14_group_size = 0x7800;
10410 }
10411 else
10412 {
10413 stub_group_size = 0x1c00000;
10414 stub14_group_size = 0x7000;
10415 }
10416 suppress_size_errors = TRUE;
10417 }
10418
10419 list = htab->input_list + htab->top_index;
734b6cf9 10420 do
721956f4 10421 {
734b6cf9
AM
10422 asection *tail = *list;
10423 while (tail != NULL)
721956f4 10424 {
734b6cf9
AM
10425 asection *curr;
10426 asection *prev;
10427 bfd_size_type total;
10428 bfd_boolean big_sec;
10429 bfd_vma curr_toc;
10430
10431 curr = tail;
eea6121a 10432 total = tail->size;
7c8fe5c4
AM
10433 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
10434 ? stub14_group_size : stub_group_size);
10435 if (big_sec && !suppress_size_errors)
5c3dead3
AM
10436 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10437 tail->owner, tail);
734b6cf9
AM
10438 curr_toc = htab->stub_group[tail->id].toc_off;
10439
10440 while ((prev = PREV_SEC (curr)) != NULL
10441 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM
10442 < (ppc64_elf_section_data (prev)->has_14bit_branch
10443 ? stub14_group_size : stub_group_size))
ad8e1ba5 10444 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM
10445 curr = prev;
10446
10447 /* OK, the size from the start of CURR to the end is less
10448 than stub_group_size and thus can be handled by one stub
10449 section. (or the tail section is itself larger than
10450 stub_group_size, in which case we may be toast.) We
10451 should really be keeping track of the total size of stubs
10452 added here, as stubs contribute to the final output
10453 section size. That's a little tricky, and this way will
10454 only break if stubs added make the total size more than
10455 2^25, ie. for the default stub_group_size, if stubs total
10456 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10457 do
721956f4
AM
10458 {
10459 prev = PREV_SEC (tail);
734b6cf9 10460 /* Set up this stub group. */
721956f4
AM
10461 htab->stub_group[tail->id].link_sec = curr;
10462 }
734b6cf9
AM
10463 while (tail != curr && (tail = prev) != NULL);
10464
10465 /* But wait, there's more! Input sections up to stub_group_size
10466 bytes before the stub section can be handled by it too.
10467 Don't do this if we have a really large section after the
10468 stubs, as adding more stubs increases the chance that
10469 branches may not reach into the stub section. */
10470 if (!stubs_always_before_branch && !big_sec)
10471 {
10472 total = 0;
10473 while (prev != NULL
10474 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM
10475 < (ppc64_elf_section_data (prev)->has_14bit_branch
10476 ? stub14_group_size : stub_group_size))
734b6cf9
AM
10477 && htab->stub_group[prev->id].toc_off == curr_toc)
10478 {
10479 tail = prev;
10480 prev = PREV_SEC (tail);
10481 htab->stub_group[tail->id].link_sec = curr;
10482 }
10483 }
10484 tail = prev;
721956f4
AM
10485 }
10486 }
734b6cf9
AM
10487 while (list-- != htab->input_list);
10488 free (htab->input_list);
721956f4
AM
10489#undef PREV_SEC
10490}
10491
721956f4
AM
10492/* Determine and set the size of the stub section for a final link.
10493
10494 The basic idea here is to examine all the relocations looking for
10495 PC-relative calls to a target that is unreachable with a "bl"
10496 instruction. */
10497
b34976b6 10498bfd_boolean
927be08e 10499ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
721956f4
AM
10500{
10501 bfd_size_type stub_group_size;
b34976b6 10502 bfd_boolean stubs_always_before_branch;
721956f4
AM
10503 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10504
4dfe6ac6
NC
10505 if (htab == NULL)
10506 return FALSE;
10507
721956f4
AM
10508 stubs_always_before_branch = group_size < 0;
10509 if (group_size < 0)
10510 stub_group_size = -group_size;
10511 else
10512 stub_group_size = group_size;
721956f4
AM
10513
10514 group_sections (htab, stub_group_size, stubs_always_before_branch);
10515
721956f4
AM
10516 while (1)
10517 {
10518 bfd *input_bfd;
10519 unsigned int bfd_indx;
10520 asection *stub_sec;
721956f4
AM
10521
10522 htab->stub_iteration += 1;
721956f4
AM
10523
10524 for (input_bfd = info->input_bfds, bfd_indx = 0;
10525 input_bfd != NULL;
10526 input_bfd = input_bfd->link_next, bfd_indx++)
10527 {
10528 Elf_Internal_Shdr *symtab_hdr;
10529 asection *section;
6cdc0ccc 10530 Elf_Internal_Sym *local_syms = NULL;
721956f4 10531
0c8d6e5c 10532 if (!is_ppc64_elf (input_bfd))
67f93c31
AM
10533 continue;
10534
721956f4 10535 /* We'll need the symbol table in a second. */
0ffa91dd 10536 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM
10537 if (symtab_hdr->sh_info == 0)
10538 continue;
10539
721956f4
AM
10540 /* Walk over each section attached to the input bfd. */
10541 for (section = input_bfd->sections;
10542 section != NULL;
10543 section = section->next)
10544 {
721956f4 10545 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM
10546
10547 /* If there aren't any relocs, then there's nothing more
10548 to do. */
10549 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM
10550 || (section->flags & SEC_ALLOC) == 0
10551 || (section->flags & SEC_LOAD) == 0
10552 || (section->flags & SEC_CODE) == 0
721956f4
AM
10553 || section->reloc_count == 0)
10554 continue;
10555
10556 /* If this section is a link-once section that will be
10557 discarded, then don't create any stubs. */
10558 if (section->output_section == NULL
927be08e 10559 || section->output_section->owner != info->output_bfd)
721956f4
AM
10560 continue;
10561
1e2f5b6e
AM
10562 /* Get the relocs. */
10563 internal_relocs
4ce794b7 10564 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 10565 info->keep_memory);
721956f4 10566 if (internal_relocs == NULL)
1e2f5b6e 10567 goto error_ret_free_local;
721956f4
AM
10568
10569 /* Now examine each relocation. */
10570 irela = internal_relocs;
10571 irelaend = irela + section->reloc_count;
10572 for (; irela < irelaend; irela++)
10573 {
4ce794b7
AM
10574 enum elf_ppc64_reloc_type r_type;
10575 unsigned int r_indx;
721956f4
AM
10576 enum ppc_stub_type stub_type;
10577 struct ppc_stub_hash_entry *stub_entry;
8387904d 10578 asection *sym_sec, *code_sec;
e054468f 10579 bfd_vma sym_value, code_value;
721956f4 10580 bfd_vma destination;
8843416a 10581 bfd_boolean ok_dest;
721956f4 10582 struct ppc_link_hash_entry *hash;
8387904d 10583 struct ppc_link_hash_entry *fdh;
411e1bfb
AM
10584 struct elf_link_hash_entry *h;
10585 Elf_Internal_Sym *sym;
721956f4
AM
10586 char *stub_name;
10587 const asection *id_sec;
74f0fb50 10588 struct _opd_sec_data *opd;
e054468f 10589 struct plt_entry *plt_ent;
721956f4
AM
10590
10591 r_type = ELF64_R_TYPE (irela->r_info);
10592 r_indx = ELF64_R_SYM (irela->r_info);
10593
4ce794b7 10594 if (r_type >= R_PPC64_max)
721956f4
AM
10595 {
10596 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 10597 goto error_ret_free_internal;
721956f4
AM
10598 }
10599
10600 /* Only look for stubs on branch instructions. */
4ce794b7
AM
10601 if (r_type != R_PPC64_REL24
10602 && r_type != R_PPC64_REL14
10603 && r_type != R_PPC64_REL14_BRTAKEN
10604 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM
10605 continue;
10606
10607 /* Now determine the call target, its name, value,
10608 section. */
411e1bfb
AM
10609 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10610 r_indx, input_bfd))
10611 goto error_ret_free_internal;
10612 hash = (struct ppc_link_hash_entry *) h;
10613
8843416a 10614 ok_dest = FALSE;
8387904d 10615 fdh = NULL;
7fe2b9a6 10616 sym_value = 0;
411e1bfb 10617 if (hash == NULL)
721956f4 10618 {
411e1bfb 10619 sym_value = sym->st_value;
8843416a 10620 ok_dest = TRUE;
721956f4 10621 }
7fe2b9a6
AM
10622 else if (hash->elf.root.type == bfd_link_hash_defined
10623 || hash->elf.root.type == bfd_link_hash_defweak)
10624 {
10625 sym_value = hash->elf.root.u.def.value;
10626 if (sym_sec->output_section != NULL)
10627 ok_dest = TRUE;
10628 }
10629 else if (hash->elf.root.type == bfd_link_hash_undefweak
10630 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 10631 {
99877b66 10632 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM
10633 use the func descriptor sym instead if it is
10634 defined. */
ceb1f1ef 10635 if (hash->elf.root.root.string[0] == '.'
b31867b6 10636 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 10637 {
8387904d
AM
10638 if (fdh->elf.root.type == bfd_link_hash_defined
10639 || fdh->elf.root.type == bfd_link_hash_defweak)
10640 {
10641 sym_sec = fdh->elf.root.u.def.section;
10642 sym_value = fdh->elf.root.u.def.value;
10643 if (sym_sec->output_section != NULL)
10644 ok_dest = TRUE;
10645 }
99877b66
AM
10646 else
10647 fdh = NULL;
8387904d 10648 }
7fe2b9a6
AM
10649 }
10650 else
10651 {
10652 bfd_set_error (bfd_error_bad_value);
10653 goto error_ret_free_internal;
721956f4
AM
10654 }
10655
8843416a
AM
10656 destination = 0;
10657 if (ok_dest)
10658 {
10659 sym_value += irela->r_addend;
10660 destination = (sym_value
10661 + sym_sec->output_offset
10662 + sym_sec->output_section->vma);
10663 }
10664
8387904d 10665 code_sec = sym_sec;
e054468f 10666 code_value = sym_value;
74f0fb50
AM
10667 opd = get_opd_info (sym_sec);
10668 if (opd != NULL)
8387904d
AM
10669 {
10670 bfd_vma dest;
10671
74f0fb50 10672 if (hash == NULL && opd->adjust != NULL)
8387904d 10673 {
74f0fb50 10674 long adjust = opd->adjust[sym_value / 8];
8387904d
AM
10675 if (adjust == -1)
10676 continue;
e054468f 10677 code_value += adjust;
8387904d
AM
10678 sym_value += adjust;
10679 }
10680 dest = opd_entry_value (sym_sec, sym_value,
e054468f 10681 &code_sec, &code_value);
8387904d
AM
10682 if (dest != (bfd_vma) -1)
10683 {
10684 destination = dest;
10685 if (fdh != NULL)
10686 {
10687 /* Fixup old ABI sym to point at code
10688 entry. */
99877b66 10689 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 10690 hash->elf.root.u.def.section = code_sec;
e054468f 10691 hash->elf.root.u.def.value = code_value;
8387904d
AM
10692 }
10693 }
10694 }
10695
721956f4 10696 /* Determine what (if any) linker stub is needed. */
e054468f 10697 plt_ent = NULL;
721956f4 10698 stub_type = ppc_type_of_stub (section, irela, &hash,
e054468f 10699 &plt_ent, destination);
ad8e1ba5
AM
10700
10701 if (stub_type != ppc_stub_plt_call)
10702 {
10703 /* Check whether we need a TOC adjusting stub.
10704 Since the linker pastes together pieces from
10705 different object files when creating the
10706 _init and _fini functions, it may be that a
10707 call to what looks like a local sym is in
10708 fact a call needing a TOC adjustment. */
8387904d
AM
10709 if (code_sec != NULL
10710 && code_sec->output_section != NULL
10711 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 10712 != htab->stub_group[section->id].toc_off)
4c52953f
AM
10713 && (code_sec->has_toc_reloc
10714 || code_sec->makes_toc_func_call))
ad8e1ba5
AM
10715 stub_type = ppc_stub_long_branch_r2off;
10716 }
10717
721956f4
AM
10718 if (stub_type == ppc_stub_none)
10719 continue;
10720
411e1bfb
AM
10721 /* __tls_get_addr calls might be eliminated. */
10722 if (stub_type != ppc_stub_plt_call
10723 && hash != NULL
8387904d
AM
10724 && (hash == htab->tls_get_addr
10725 || hash == htab->tls_get_addr_fd)
411e1bfb
AM
10726 && section->has_tls_reloc
10727 && irela != internal_relocs)
10728 {
10729 /* Get tls info. */
f961d9dd 10730 unsigned char *tls_mask;
411e1bfb 10731
3a71aa26 10732 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM
10733 irela - 1, input_bfd))
10734 goto error_ret_free_internal;
e7b938ca 10735 if (*tls_mask != 0)
411e1bfb
AM
10736 continue;
10737 }
10738
721956f4
AM
10739 /* Support for grouping stub sections. */
10740 id_sec = htab->stub_group[section->id].link_sec;
10741
10742 /* Get the name of this stub. */
10743 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
10744 if (!stub_name)
10745 goto error_ret_free_internal;
10746
10747 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 10748 stub_name, FALSE, FALSE);
721956f4
AM
10749 if (stub_entry != NULL)
10750 {
10751 /* The proper stub has already been created. */
10752 free (stub_name);
10753 continue;
10754 }
10755
10756 stub_entry = ppc_add_stub (stub_name, section, htab);
10757 if (stub_entry == NULL)
10758 {
10759 free (stub_name);
6cdc0ccc
AM
10760 error_ret_free_internal:
10761 if (elf_section_data (section)->relocs == NULL)
10762 free (internal_relocs);
10763 error_ret_free_local:
10764 if (local_syms != NULL
10765 && (symtab_hdr->contents
10766 != (unsigned char *) local_syms))
10767 free (local_syms);
b34976b6 10768 return FALSE;
721956f4
AM
10769 }
10770
ad8e1ba5 10771 stub_entry->stub_type = stub_type;
e054468f
AM
10772 if (stub_type != ppc_stub_plt_call)
10773 {
10774 stub_entry->target_value = code_value;
10775 stub_entry->target_section = code_sec;
10776 }
10777 else
10778 {
10779 stub_entry->target_value = sym_value;
10780 stub_entry->target_section = sym_sec;
10781 }
721956f4 10782 stub_entry->h = hash;
e054468f 10783 stub_entry->plt_ent = plt_ent;
411e1bfb 10784 stub_entry->addend = irela->r_addend;
ee75fd95
AM
10785
10786 if (stub_entry->h != NULL)
10787 htab->stub_globals += 1;
721956f4
AM
10788 }
10789
10790 /* We're done with the internal relocs, free them. */
6cdc0ccc 10791 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 10792 free (internal_relocs);
721956f4 10793 }
6cdc0ccc
AM
10794
10795 if (local_syms != NULL
10796 && symtab_hdr->contents != (unsigned char *) local_syms)
10797 {
10798 if (!info->keep_memory)
10799 free (local_syms);
10800 else
10801 symtab_hdr->contents = (unsigned char *) local_syms;
10802 }
721956f4
AM
10803 }
10804
5c3dead3 10805 /* We may have added some stubs. Find out the new size of the
721956f4
AM
10806 stub sections. */
10807 for (stub_sec = htab->stub_bfd->sections;
10808 stub_sec != NULL;
10809 stub_sec = stub_sec->next)
e717da7e 10810 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 10811 {
5c3dead3 10812 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM
10813 stub_sec->size = 0;
10814 stub_sec->reloc_count = 0;
84f5d08e 10815 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 10816 }
eea6121a
AM
10817
10818 htab->brlt->size = 0;
84f5d08e
AM
10819 htab->brlt->reloc_count = 0;
10820 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 10821 if (htab->relbrlt != NULL)
eea6121a 10822 htab->relbrlt->size = 0;
721956f4 10823
63bc6f6c 10824 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 10825
176a0d42
AM
10826 if (info->emitrelocations
10827 && htab->glink != NULL && htab->glink->size != 0)
10828 {
10829 htab->glink->reloc_count = 1;
10830 htab->glink->flags |= SEC_RELOC;
10831 }
10832
5c3dead3
AM
10833 for (stub_sec = htab->stub_bfd->sections;
10834 stub_sec != NULL;
10835 stub_sec = stub_sec->next)
10836 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10837 && stub_sec->rawsize != stub_sec->size)
10838 break;
10839
10840 /* Exit from this loop when no stubs have been added, and no stubs
10841 have changed size. */
10842 if (stub_sec == NULL)
10843 break;
10844
721956f4
AM
10845 /* Ask the linker to do its stuff. */
10846 (*htab->layout_sections_again) ();
10847 }
10848
c456f082 10849 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM
10850 section is empty, but it's too late. If we strip sections here,
10851 the dynamic symbol table is corrupted since the section symbol
10852 for the stripped section isn't written. */
721956f4 10853
b34976b6 10854 return TRUE;
721956f4
AM
10855}
10856
10857/* Called after we have determined section placement. If sections
805fc799 10858 move, we'll be called again. Provide a value for TOCstart. */
721956f4 10859
805fc799 10860bfd_vma
4ce794b7 10861ppc64_elf_toc (bfd *obfd)
721956f4 10862{
805fc799
AM
10863 asection *s;
10864 bfd_vma TOCstart;
721956f4 10865
805fc799
AM
10866 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10867 order. The TOC starts where the first of these sections starts. */
10868 s = bfd_get_section_by_name (obfd, ".got");
e054468f 10869 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 10870 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 10871 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 10872 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 10873 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 10874 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 10875 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM
10876 {
10877 /* This may happen for
10878 o references to TOC base (SYM@toc / TOC[tc0]) without a
10879 .toc directive
10880 o bad linker script
10881 o --gc-sections and empty TOC sections
10882
10883 FIXME: Warn user? */
10884
10885 /* Look for a likely section. We probably won't even be
10886 using TOCstart. */
10887 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM
10888 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
10889 | SEC_EXCLUDE))
805fc799
AM
10890 == (SEC_ALLOC | SEC_SMALL_DATA))
10891 break;
721956f4 10892 if (s == NULL)
805fc799 10893 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 10894 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM
10895 == (SEC_ALLOC | SEC_SMALL_DATA))
10896 break;
721956f4 10897 if (s == NULL)
805fc799 10898 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM
10899 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
10900 == SEC_ALLOC)
805fc799 10901 break;
721956f4 10902 if (s == NULL)
805fc799 10903 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 10904 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM
10905 break;
10906 }
721956f4 10907
805fc799
AM
10908 TOCstart = 0;
10909 if (s != NULL)
10910 TOCstart = s->output_section->vma + s->output_offset;
721956f4 10911
805fc799 10912 return TOCstart;
721956f4
AM
10913}
10914
10915/* Build all the stubs associated with the current output file.
10916 The stubs are kept in a hash table attached to the main linker
10917 hash table. This function is called via gldelf64ppc_finish. */
10918
b34976b6 10919bfd_boolean
4ce794b7
AM
10920ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
10921 struct bfd_link_info *info,
10922 char **stats)
5d1634d7
AM
10923{
10924 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 10925 asection *stub_sec;
5d1634d7 10926 bfd_byte *p;
e717da7e 10927 int stub_sec_count = 0;
5d1634d7 10928
4dfe6ac6
NC
10929 if (htab == NULL)
10930 return FALSE;
10931
ad8e1ba5 10932 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM
10933
10934 /* Allocate memory to hold the linker stubs. */
721956f4
AM
10935 for (stub_sec = htab->stub_bfd->sections;
10936 stub_sec != NULL;
10937 stub_sec = stub_sec->next)
eea6121a
AM
10938 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10939 && stub_sec->size != 0)
e717da7e 10940 {
eea6121a
AM
10941 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
10942 if (stub_sec->contents == NULL)
10943 return FALSE;
10944 /* We want to check that built size is the same as calculated
10945 size. rawsize is a convenient location to use. */
10946 stub_sec->rawsize = stub_sec->size;
10947 stub_sec->size = 0;
e717da7e 10948 }
5d1634d7 10949
23eb7e01 10950 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 10951 {
9f951329 10952 unsigned int indx;
ad8e1ba5 10953 bfd_vma plt0;
9f951329 10954
721956f4 10955 /* Build the .glink plt call stub. */
97b639ba
AM
10956 if (htab->emit_stub_syms)
10957 {
10958 struct elf_link_hash_entry *h;
468392fb
AM
10959 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
10960 TRUE, FALSE, FALSE);
97b639ba
AM
10961 if (h == NULL)
10962 return FALSE;
10963 if (h->root.type == bfd_link_hash_new)
10964 {
10965 h->root.type = bfd_link_hash_defined;
10966 h->root.u.def.section = htab->glink;
ee4bf8d2 10967 h->root.u.def.value = 8;
f5385ebf
AM
10968 h->ref_regular = 1;
10969 h->def_regular = 1;
10970 h->ref_regular_nonweak = 1;
10971 h->forced_local = 1;
10972 h->non_elf = 0;
97b639ba
AM
10973 }
10974 }
176a0d42
AM
10975 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
10976 if (info->emitrelocations)
10977 {
10978 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
10979 if (r == NULL)
10980 return FALSE;
10981 r->r_offset = (htab->glink->output_offset
10982 + htab->glink->output_section->vma);
10983 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
10984 r->r_addend = plt0;
10985 }
4ce794b7 10986 p = htab->glink->contents;
176a0d42 10987 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM
10988 bfd_put_64 (htab->glink->owner, plt0, p);
10989 p += 8;
10990 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 10991 p += 4;
ee4bf8d2 10992 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 10993 p += 4;
ee4bf8d2 10994 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 10995 p += 4;
ee4bf8d2 10996 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 10997 p += 4;
ee4bf8d2 10998 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 10999 p += 4;
ee4bf8d2 11000 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 11001 p += 4;
ee4bf8d2 11002 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 11003 p += 4;
4ce794b7 11004 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 11005 p += 4;
4ce794b7 11006 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 11007 p += 4;
4ce794b7 11008 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 11009 p += 4;
4ce794b7 11010 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 11011 p += 4;
ee4bf8d2
AM
11012 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11013 {
11014 bfd_put_32 (htab->glink->owner, NOP, p);
11015 p += 4;
11016 }
ad8e1ba5 11017
9f951329
AM
11018 /* Build the .glink lazy link call stubs. */
11019 indx = 0;
eea6121a 11020 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM
11021 {
11022 if (indx < 0x8000)
11023 {
4ce794b7 11024 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM
11025 p += 4;
11026 }
11027 else
11028 {
4ce794b7 11029 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 11030 p += 4;
4ce794b7 11031 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM
11032 p += 4;
11033 }
4ce794b7 11034 bfd_put_32 (htab->glink->owner,
ee4bf8d2 11035 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 11036 indx++;
9f951329
AM
11037 p += 4;
11038 }
eea6121a 11039 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 11040 }
5d1634d7 11041
eea6121a 11042 if (htab->brlt->size != 0)
721956f4 11043 {
4ce794b7 11044 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 11045 htab->brlt->size);
4ce794b7 11046 if (htab->brlt->contents == NULL)
b34976b6 11047 return FALSE;
721956f4 11048 }
ee75fd95 11049 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM
11050 {
11051 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 11052 htab->relbrlt->size);
63bc6f6c
AM
11053 if (htab->relbrlt->contents == NULL)
11054 return FALSE;
11055 }
5d1634d7 11056
721956f4
AM
11057 /* Build the stubs as directed by the stub hash table. */
11058 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 11059
aa8a7074
AM
11060 if (htab->relbrlt != NULL)
11061 htab->relbrlt->reloc_count = 0;
11062
721956f4
AM
11063 for (stub_sec = htab->stub_bfd->sections;
11064 stub_sec != NULL;
11065 stub_sec = stub_sec->next)
e717da7e
AM
11066 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11067 {
11068 stub_sec_count += 1;
eea6121a 11069 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM
11070 break;
11071 }
5d1634d7 11072
721956f4 11073 if (stub_sec != NULL
eea6121a 11074 || htab->glink->rawsize != htab->glink->size)
5d1634d7 11075 {
b34976b6 11076 htab->stub_error = TRUE;
721956f4 11077 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 11078 }
721956f4 11079
d2a300cf
AM
11080 if (htab->stub_error)
11081 return FALSE;
11082
11083 if (stats != NULL)
11084 {
11085 *stats = bfd_malloc (500);
11086 if (*stats == NULL)
11087 return FALSE;
11088
ee75fd95 11089 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM
11090 " branch %lu\n"
11091 " toc adjust %lu\n"
11092 " long branch %lu\n"
11093 " long toc adj %lu\n"
11094 " plt call %lu"),
e717da7e 11095 stub_sec_count,
ee75fd95 11096 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM
11097 htab->stub_count[ppc_stub_long_branch - 1],
11098 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11099 htab->stub_count[ppc_stub_plt_branch - 1],
11100 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11101 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM
11102 }
11103 return TRUE;
5bd4f169
AM
11104}
11105
99877b66
AM
11106/* This function undoes the changes made by add_symbol_adjust. */
11107
11108static bfd_boolean
11109undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11110{
11111 struct ppc_link_hash_entry *eh;
11112
11113 if (h->root.type == bfd_link_hash_indirect)
11114 return TRUE;
11115
11116 if (h->root.type == bfd_link_hash_warning)
11117 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11118
11119 eh = (struct ppc_link_hash_entry *) h;
11120 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11121 return TRUE;
11122
11123 eh->elf.root.type = bfd_link_hash_undefined;
11124 return TRUE;
11125}
11126
11127void
11128ppc64_elf_restore_symbols (struct bfd_link_info *info)
11129{
11130 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC
11131
11132 if (htab != NULL)
11133 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM
11134}
11135
60124e18
AM
11136/* What to do when ld finds relocations against symbols defined in
11137 discarded sections. */
11138
11139static unsigned int
11140ppc64_elf_action_discarded (asection *sec)
11141{
11142 if (strcmp (".opd", sec->name) == 0)
11143 return 0;
11144
11145 if (strcmp (".toc", sec->name) == 0)
11146 return 0;
11147
bce50a28
JJ
11148 if (strcmp (".toc1", sec->name) == 0)
11149 return 0;
11150
60124e18
AM
11151 return _bfd_elf_default_action_discarded (sec);
11152}
11153
5bd4f169
AM
11154/* The RELOCATE_SECTION function is called by the ELF backend linker
11155 to handle the relocations for a section.
11156
11157 The relocs are always passed as Rela structures; if the section
11158 actually uses Rel structures, the r_addend field will always be
11159 zero.
11160
11161 This function is responsible for adjust the section contents as
11162 necessary, and (if using Rela relocs and generating a
1049f94e 11163 relocatable output file) adjusting the reloc addend as
5bd4f169
AM
11164 necessary.
11165
11166 This function does not have to worry about setting the reloc
11167 address or the reloc symbol index.
11168
11169 LOCAL_SYMS is a pointer to the swapped in local symbols.
11170
11171 LOCAL_SECTIONS is an array giving the section in the input file
11172 corresponding to the st_shndx field of each local symbol.
11173
11174 The global hash table entry for the global symbols can be found
11175 via elf_sym_hashes (input_bfd).
11176
1049f94e 11177 When generating relocatable output, this function must handle
5bd4f169
AM
11178 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11179 going to be the section symbol corresponding to the output
11180 section, which means that the addend must be adjusted
11181 accordingly. */
11182
b34976b6 11183static bfd_boolean
4ce794b7
AM
11184ppc64_elf_relocate_section (bfd *output_bfd,
11185 struct bfd_link_info *info,
11186 bfd *input_bfd,
11187 asection *input_section,
11188 bfd_byte *contents,
11189 Elf_Internal_Rela *relocs,
11190 Elf_Internal_Sym *local_syms,
11191 asection **local_sections)
5bd4f169 11192{
65f38f15 11193 struct ppc_link_hash_table *htab;
5bd4f169
AM
11194 Elf_Internal_Shdr *symtab_hdr;
11195 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
11196 Elf_Internal_Rela *rel;
11197 Elf_Internal_Rela *relend;
411e1bfb
AM
11198 Elf_Internal_Rela outrel;
11199 bfd_byte *loc;
411e1bfb 11200 struct got_entry **local_got_ents;
5bd4f169 11201 bfd_vma TOCstart;
b34976b6
AM
11202 bfd_boolean ret = TRUE;
11203 bfd_boolean is_opd;
96e0dda4 11204 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 11205 bfd_boolean is_power4 = FALSE;
4fe5ca5b 11206 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 11207
65f38f15 11208 /* Initialize howto table if needed. */
5bd4f169 11209 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
11210 ppc_howto_init ();
11211
65f38f15 11212 htab = ppc_hash_table (info);
4dfe6ac6
NC
11213 if (htab == NULL)
11214 return FALSE;
ee75fd95
AM
11215
11216 /* Don't relocate stub sections. */
11217 if (input_section->owner == htab->stub_bfd)
11218 return TRUE;
11219
0c8d6e5c 11220 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 11221
411e1bfb 11222 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 11223 TOCstart = elf_gp (output_bfd);
0ffa91dd 11224 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 11225 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 11226 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 11227
5bd4f169
AM
11228 rel = relocs;
11229 relend = relocs + input_section->reloc_count;
11230 for (; rel < relend; rel++)
11231 {
04c9666a 11232 enum elf_ppc64_reloc_type r_type;
4cc603a5 11233 bfd_vma addend, orig_addend;
5bd4f169
AM
11234 bfd_reloc_status_type r;
11235 Elf_Internal_Sym *sym;
11236 asection *sec;
039b3fef
AM
11237 struct elf_link_hash_entry *h_elf;
11238 struct ppc_link_hash_entry *h;
11239 struct ppc_link_hash_entry *fdh;
5bd4f169 11240 const char *sym_name;
0d4792f7 11241 unsigned long r_symndx, toc_symndx;
3a71aa26 11242 bfd_vma toc_addend;
f961d9dd
AM
11243 unsigned char tls_mask, tls_gd, tls_type;
11244 unsigned char sym_type;
5bd4f169 11245 bfd_vma relocation;
b34976b6
AM
11246 bfd_boolean unresolved_reloc;
11247 bfd_boolean warned;
50bc7936 11248 unsigned long insn, mask;
721956f4
AM
11249 struct ppc_stub_hash_entry *stub_entry;
11250 bfd_vma max_br_offset;
11251 bfd_vma from;
5bd4f169 11252
4ce794b7 11253 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 11254 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM
11255
11256 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11257 symbol of the previous ADDR64 reloc. The symbol gives us the
11258 proper TOC base to use. */
11259 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11260 && rel != relocs
11261 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11262 && is_opd)
11263 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11264
4ce794b7
AM
11265 sym = NULL;
11266 sec = NULL;
039b3fef 11267 h_elf = NULL;
4ce794b7 11268 sym_name = NULL;
b34976b6
AM
11269 unresolved_reloc = FALSE;
11270 warned = FALSE;
4cc603a5 11271 orig_addend = rel->r_addend;
65f38f15 11272
0b13192e 11273 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM
11274 {
11275 /* It's a local symbol. */
74f0fb50 11276 struct _opd_sec_data *opd;
4025353c 11277
5bd4f169
AM
11278 sym = local_syms + r_symndx;
11279 sec = local_sections[r_symndx];
26c61ae5 11280 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 11281 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 11282 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM
11283 opd = get_opd_info (sec);
11284 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 11285 {
74f0fb50 11286 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM
11287 if (adjust == -1)
11288 relocation = 0;
11289 else
4cc603a5
AM
11290 {
11291 /* If this is a relocation against the opd section sym
11292 and we have edited .opd, adjust the reloc addend so
11293 that ld -r and ld --emit-relocs output is correct.
11294 If it is a reloc against some other .opd symbol,
11295 then the symbol value will be adjusted later. */
11296 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11297 rel->r_addend += adjust;
11298 else
11299 relocation += adjust;
11300 }
1e2f5b6e 11301 }
5bd4f169
AM
11302 }
11303 else
11304 {
b2a8e766
AM
11305 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11306 r_symndx, symtab_hdr, sym_hashes,
039b3fef 11307 h_elf, sec, relocation,
b2a8e766 11308 unresolved_reloc, warned);
039b3fef
AM
11309 sym_name = h_elf->root.root.string;
11310 sym_type = h_elf->type;
5bd4f169 11311 }
039b3fef 11312 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 11313
ab96bf03
AM
11314 if (sec != NULL && elf_discarded_section (sec))
11315 {
11316 /* For relocs against symbols from removed linkonce sections,
11317 or sections discarded by a linker script, we just want the
11318 section contents zeroed. Avoid any special processing. */
11319 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
11320 contents + rel->r_offset);
11321 rel->r_info = 0;
11322 rel->r_addend = 0;
11323 continue;
11324 }
11325
11326 if (info->relocatable)
11327 continue;
11328
951fd09b
AM
11329 /* TLS optimizations. Replace instruction sequences and relocs
11330 based on information we collected in tls_optimize. We edit
11331 RELOCS so that --emit-relocs will output something sensible
11332 for the final instruction stream. */
11333 tls_mask = 0;
11334 tls_gd = 0;
0d4792f7 11335 toc_symndx = 0;
727fc41e
AM
11336 if (h != NULL)
11337 tls_mask = h->tls_mask;
11338 else if (local_got_ents != NULL)
411e1bfb 11339 {
e054468f
AM
11340 struct plt_entry **local_plt = (struct plt_entry **)
11341 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 11342 unsigned char *lgot_masks = (unsigned char *)
e054468f 11343 (local_plt + symtab_hdr->sh_info);
727fc41e
AM
11344 tls_mask = lgot_masks[r_symndx];
11345 }
11346 if (tls_mask == 0
11347 && (r_type == R_PPC64_TLS
11348 || r_type == R_PPC64_TLSGD
11349 || r_type == R_PPC64_TLSLD))
11350 {
11351 /* Check for toc tls entries. */
f961d9dd 11352 unsigned char *toc_tls;
0d4792f7 11353
727fc41e
AM
11354 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11355 &local_syms, rel, input_bfd))
11356 return FALSE;
0d4792f7 11357
727fc41e
AM
11358 if (toc_tls)
11359 tls_mask = *toc_tls;
0d4792f7
AM
11360 }
11361
11362 /* Check that tls relocs are used with tls syms, and non-tls
11363 relocs are used with non-tls syms. */
11364 if (r_symndx != 0
11365 && r_type != R_PPC64_NONE
11366 && (h == NULL
039b3fef
AM
11367 || h->elf.root.type == bfd_link_hash_defined
11368 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM
11369 && (IS_PPC64_TLS_RELOC (r_type)
11370 != (sym_type == STT_TLS
11371 || (sym_type == STT_SECTION
11372 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 11373 {
727fc41e
AM
11374 if (tls_mask != 0
11375 && (r_type == R_PPC64_TLS
11376 || r_type == R_PPC64_TLSGD
11377 || r_type == R_PPC64_TLSLD))
0d4792f7
AM
11378 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11379 ;
11380 else
11381 (*_bfd_error_handler)
1d483afe 11382 (!IS_PPC64_TLS_RELOC (r_type)
d003868e
AM
11383 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11384 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11385 input_bfd,
11386 input_section,
0d4792f7
AM
11387 (long) rel->r_offset,
11388 ppc64_elf_howto_table[r_type]->name,
11389 sym_name);
411e1bfb
AM
11390 }
11391
11392 /* Ensure reloc mapping code below stays sane. */
11393 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11394 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11395 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11396 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11397 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11398 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11399 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11400 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11401 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11402 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11403 abort ();
0d4792f7 11404
411e1bfb
AM
11405 switch (r_type)
11406 {
11407 default:
411e1bfb
AM
11408 break;
11409
11410 case R_PPC64_TOC16:
11411 case R_PPC64_TOC16_LO:
11412 case R_PPC64_TOC16_DS:
11413 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM
11414 {
11415 /* Check for toc tls entries. */
f961d9dd 11416 unsigned char *toc_tls;
951fd09b 11417 int retval;
411e1bfb 11418
3a71aa26
AM
11419 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11420 &local_syms, rel, input_bfd);
951fd09b 11421 if (retval == 0)
411e1bfb
AM
11422 return FALSE;
11423
11424 if (toc_tls)
11425 {
951fd09b 11426 tls_mask = *toc_tls;
411e1bfb
AM
11427 if (r_type == R_PPC64_TOC16_DS
11428 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM
11429 {
11430 if (tls_mask != 0
11431 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11432 goto toctprel;
11433 }
411e1bfb 11434 else
951fd09b
AM
11435 {
11436 /* If we found a GD reloc pair, then we might be
11437 doing a GD->IE transition. */
11438 if (retval == 2)
11439 {
11440 tls_gd = TLS_TPRELGD;
11441 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 11442 goto tls_ldgd_opt;
951fd09b
AM
11443 }
11444 else if (retval == 3)
11445 {
11446 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 11447 goto tls_ldgd_opt;
951fd09b
AM
11448 }
11449 }
411e1bfb
AM
11450 }
11451 }
11452 break;
11453
11454 case R_PPC64_GOT_TPREL16_DS:
11455 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM
11456 if (tls_mask != 0
11457 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 11458 {
81407a69 11459 toctprel:
4fe5ca5b 11460 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM
11461 insn &= 31 << 21;
11462 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 11463 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 11464 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM
11465 if (toc_symndx != 0)
11466 {
11467 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 11468 rel->r_addend = toc_addend;
0d4792f7
AM
11469 /* We changed the symbol. Start over in order to
11470 get h, sym, sec etc. right. */
11471 rel--;
11472 continue;
11473 }
11474 else
11475 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
11476 }
11477 break;
11478
11479 case R_PPC64_TLS:
951fd09b
AM
11480 if (tls_mask != 0
11481 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 11482 {
411e1bfb 11483 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
11484 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11485 if (insn == 0)
411e1bfb 11486 abort ();
411e1bfb 11487 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 11488 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM
11489 PPC64_TPREL16_LO which is at low-order half-word. */
11490 rel->r_offset += d_offset;
0d4792f7
AM
11491 r_type = R_PPC64_TPREL16_LO;
11492 if (toc_symndx != 0)
11493 {
11494 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 11495 rel->r_addend = toc_addend;
0d4792f7
AM
11496 /* We changed the symbol. Start over in order to
11497 get h, sym, sec etc. right. */
11498 rel--;
11499 continue;
11500 }
11501 else
11502 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
11503 }
11504 break;
11505
411e1bfb
AM
11506 case R_PPC64_GOT_TLSGD16_HI:
11507 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM
11508 tls_gd = TLS_TPRELGD;
11509 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11510 goto tls_gdld_hi;
11511 break;
11512
411e1bfb
AM
11513 case R_PPC64_GOT_TLSLD16_HI:
11514 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 11515 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 11516 {
951fd09b
AM
11517 tls_gdld_hi:
11518 if ((tls_mask & tls_gd) != 0)
11519 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11520 + R_PPC64_GOT_TPREL16_DS);
11521 else
411e1bfb 11522 {
951fd09b 11523 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 11524 rel->r_offset -= d_offset;
951fd09b 11525 r_type = R_PPC64_NONE;
411e1bfb 11526 }
951fd09b 11527 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
11528 }
11529 break;
11530
951fd09b
AM
11531 case R_PPC64_GOT_TLSGD16:
11532 case R_PPC64_GOT_TLSGD16_LO:
11533 tls_gd = TLS_TPRELGD;
11534 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 11535 goto tls_ldgd_opt;
951fd09b 11536 break;
411e1bfb 11537
951fd09b
AM
11538 case R_PPC64_GOT_TLSLD16:
11539 case R_PPC64_GOT_TLSLD16_LO:
11540 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11541 {
3a71aa26 11542 unsigned int insn1, insn2, insn3;
102890f0
AM
11543 bfd_vma offset;
11544
11545 tls_ldgd_opt:
727fc41e
AM
11546 offset = (bfd_vma) -1;
11547 /* If not using the newer R_PPC64_TLSGD/LD to mark
11548 __tls_get_addr calls, we must trust that the call
11549 stays with its arg setup insns, ie. that the next
11550 reloc is the __tls_get_addr call associated with
11551 the current reloc. Edit both insns. */
11552 if (input_section->has_tls_get_addr_call
11553 && rel + 1 < relend
11554 && branch_reloc_hash_match (input_bfd, rel + 1,
11555 htab->tls_get_addr,
11556 htab->tls_get_addr_fd))
11557 offset = rel[1].r_offset;
102890f0 11558 if ((tls_mask & tls_gd) != 0)
411e1bfb 11559 {
102890f0 11560 /* IE */
3a71aa26
AM
11561 insn1 = bfd_get_32 (output_bfd,
11562 contents + rel->r_offset - d_offset);
102890f0
AM
11563 insn1 &= (1 << 26) - (1 << 2);
11564 insn1 |= 58 << 26; /* ld */
11565 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 11566 if (offset != (bfd_vma) -1)
f58d5a2d 11567 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM
11568 if ((tls_mask & TLS_EXPLICIT) == 0)
11569 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11570 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 11571 else
102890f0
AM
11572 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
11573 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11574 }
11575 else
11576 {
11577 /* LE */
11578 insn1 = 0x3c6d0000; /* addis 3,13,0 */
11579 insn2 = 0x38630000; /* addi 3,3,0 */
11580 if (tls_gd == 0)
951fd09b 11581 {
102890f0 11582 /* Was an LD reloc. */
1d483afe
AM
11583 if (toc_symndx)
11584 sec = local_sections[toc_symndx];
11585 for (r_symndx = 0;
11586 r_symndx < symtab_hdr->sh_info;
11587 r_symndx++)
11588 if (local_sections[r_symndx] == sec)
11589 break;
11590 if (r_symndx >= symtab_hdr->sh_info)
11591 r_symndx = 0;
102890f0 11592 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
11593 if (r_symndx != 0)
11594 rel->r_addend -= (local_syms[r_symndx].st_value
11595 + sec->output_offset
11596 + sec->output_section->vma);
951fd09b 11597 }
102890f0 11598 else if (toc_symndx != 0)
3a71aa26
AM
11599 {
11600 r_symndx = toc_symndx;
11601 rel->r_addend = toc_addend;
11602 }
102890f0
AM
11603 r_type = R_PPC64_TPREL16_HA;
11604 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM
11605 if (offset != (bfd_vma) -1)
11606 {
11607 rel[1].r_info = ELF64_R_INFO (r_symndx,
11608 R_PPC64_TPREL16_LO);
11609 rel[1].r_offset = offset + d_offset;
11610 rel[1].r_addend = rel->r_addend;
11611 }
102890f0 11612 }
3a71aa26
AM
11613 bfd_put_32 (output_bfd, insn1,
11614 contents + rel->r_offset - d_offset);
727fc41e
AM
11615 if (offset != (bfd_vma) -1)
11616 {
11617 insn3 = bfd_get_32 (output_bfd,
11618 contents + offset + 4);
11619 if (insn3 == NOP
11620 || insn3 == CROR_151515 || insn3 == CROR_313131)
11621 {
11622 rel[1].r_offset += 4;
11623 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11624 insn2 = NOP;
11625 }
11626 bfd_put_32 (output_bfd, insn2, contents + offset);
11627 }
11628 if ((tls_mask & tls_gd) == 0
11629 && (tls_gd == 0 || toc_symndx != 0))
11630 {
11631 /* We changed the symbol. Start over in order
11632 to get h, sym, sec etc. right. */
11633 rel--;
11634 continue;
11635 }
11636 }
11637 break;
11638
11639 case R_PPC64_TLSGD:
11640 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11641 {
11642 unsigned int insn2, insn3;
11643 bfd_vma offset = rel->r_offset;
11644
11645 if ((tls_mask & TLS_TPRELGD) != 0)
11646 {
11647 /* IE */
11648 r_type = R_PPC64_NONE;
11649 insn2 = 0x7c636a14; /* add 3,3,13 */
11650 }
11651 else
11652 {
11653 /* LE */
11654 if (toc_symndx != 0)
11655 {
11656 r_symndx = toc_symndx;
11657 rel->r_addend = toc_addend;
11658 }
11659 r_type = R_PPC64_TPREL16_LO;
11660 rel->r_offset = offset + d_offset;
11661 insn2 = 0x38630000; /* addi 3,3,0 */
11662 }
11663 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11664 /* Zap the reloc on the _tls_get_addr call too. */
11665 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 11666 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM
11667 insn3 = bfd_get_32 (output_bfd,
11668 contents + offset + 4);
102890f0
AM
11669 if (insn3 == NOP
11670 || insn3 == CROR_151515 || insn3 == CROR_313131)
11671 {
727fc41e 11672 rel->r_offset += 4;
3a71aa26
AM
11673 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11674 insn2 = NOP;
102890f0 11675 }
102890f0 11676 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 11677 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 11678 {
102890f0
AM
11679 rel--;
11680 continue;
411e1bfb 11681 }
411e1bfb 11682 }
411e1bfb
AM
11683 break;
11684
727fc41e
AM
11685 case R_PPC64_TLSLD:
11686 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11687 {
11688 unsigned int insn2, insn3;
11689 bfd_vma offset = rel->r_offset;
11690
11691 if (toc_symndx)
11692 sec = local_sections[toc_symndx];
11693 for (r_symndx = 0;
11694 r_symndx < symtab_hdr->sh_info;
11695 r_symndx++)
11696 if (local_sections[r_symndx] == sec)
11697 break;
11698 if (r_symndx >= symtab_hdr->sh_info)
11699 r_symndx = 0;
11700 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11701 if (r_symndx != 0)
11702 rel->r_addend -= (local_syms[r_symndx].st_value
11703 + sec->output_offset
11704 + sec->output_section->vma);
11705
11706 r_type = R_PPC64_TPREL16_LO;
11707 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11708 rel->r_offset = offset + d_offset;
11709 /* Zap the reloc on the _tls_get_addr call too. */
11710 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 11711 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM
11712 insn2 = 0x38630000; /* addi 3,3,0 */
11713 insn3 = bfd_get_32 (output_bfd,
11714 contents + offset + 4);
11715 if (insn3 == NOP
11716 || insn3 == CROR_151515 || insn3 == CROR_313131)
11717 {
11718 rel->r_offset += 4;
11719 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11720 insn2 = NOP;
11721 }
11722 bfd_put_32 (output_bfd, insn2, contents + offset);
11723 rel--;
11724 continue;
11725 }
11726 break;
11727
411e1bfb 11728 case R_PPC64_DTPMOD64:
951fd09b
AM
11729 if (rel + 1 < relend
11730 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
11731 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 11732 {
951fd09b
AM
11733 if ((tls_mask & TLS_GD) == 0)
11734 {
11735 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
11736 if ((tls_mask & TLS_TPRELGD) != 0)
11737 r_type = R_PPC64_TPREL64;
11738 else
11739 {
4ce794b7 11740 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM
11741 r_type = R_PPC64_NONE;
11742 }
11743 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11744 }
11745 }
11746 else
11747 {
11748 if ((tls_mask & TLS_LD) == 0)
411e1bfb 11749 {
4ce794b7 11750 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 11751 r_type = R_PPC64_NONE;
951fd09b 11752 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 11753 }
411e1bfb
AM
11754 }
11755 break;
11756
11757 case R_PPC64_TPREL64:
951fd09b 11758 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM
11759 {
11760 r_type = R_PPC64_NONE;
11761 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11762 }
11763 break;
11764 }
11765
11766 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 11767 insn = 0;
b25116a9
AM
11768 max_br_offset = 1 << 25;
11769 addend = rel->r_addend;
65f38f15 11770 switch (r_type)
5bd4f169
AM
11771 {
11772 default:
65f38f15 11773 break;
5bd4f169 11774
65f38f15
AM
11775 /* Branch taken prediction relocations. */
11776 case R_PPC64_ADDR14_BRTAKEN:
11777 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH
11778 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11779 /* Fall thru. */
65f38f15 11780
86c76c7b 11781 /* Branch not taken prediction relocations. */
65f38f15
AM
11782 case R_PPC64_ADDR14_BRNTAKEN:
11783 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM
11784 insn |= bfd_get_32 (output_bfd,
11785 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 11786 /* Fall thru. */
86c76c7b 11787
b25116a9
AM
11788 case R_PPC64_REL14:
11789 max_br_offset = 1 << 15;
11790 /* Fall thru. */
5bd4f169 11791
65f38f15 11792 case R_PPC64_REL24:
ad8e1ba5
AM
11793 /* Calls to functions with a different TOC, such as calls to
11794 shared objects, need to alter the TOC pointer. This is
11795 done using a linkage stub. A REL24 branching to these
11796 linkage stubs needs to be followed by a nop, as the nop
11797 will be replaced with an instruction to restore the TOC
11798 base pointer. */
b25116a9 11799 stub_entry = NULL;
8387904d 11800 fdh = h;
b31867b6
AM
11801 if (h != NULL
11802 && h->oh != NULL
11803 && h->oh->is_func_descriptor)
11804 fdh = ppc_follow_link (h->oh);
11805 if (((fdh != NULL
11806 && fdh->elf.plt.plist != NULL)
8387904d 11807 || (sec != NULL
ad8e1ba5 11808 && sec->output_section != NULL
b25116a9 11809 && sec->id <= htab->top_id
ad8e1ba5 11810 && (htab->stub_group[sec->id].toc_off
25f23106
AM
11811 != htab->stub_group[input_section->id].toc_off))
11812 || (h == NULL
11813 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
721956f4 11814 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM
11815 rel, htab)) != NULL
11816 && (stub_entry->stub_type == ppc_stub_plt_call
11817 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
11818 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 11819 {
b25116a9 11820 bfd_boolean can_plt_call = FALSE;
721956f4 11821
eea6121a 11822 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 11823 {
b25116a9
AM
11824 unsigned long nop;
11825 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
11826 if (nop == NOP
11827 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 11828 {
a7f2871e
AM
11829 if (h != NULL
11830 && (h == htab->tls_get_addr_fd
11831 || h == htab->tls_get_addr)
11832 && !htab->no_tls_get_addr_opt)
11833 {
11834 /* Special stub used, leave nop alone. */
11835 }
11836 else
11837 bfd_put_32 (input_bfd, LD_R2_40R1,
11838 contents + rel->r_offset + 4);
b25116a9 11839 can_plt_call = TRUE;
41bd81ab 11840 }
5bd4f169 11841 }
721956f4
AM
11842
11843 if (!can_plt_call)
11844 {
ad8e1ba5
AM
11845 if (stub_entry->stub_type == ppc_stub_plt_call)
11846 {
11847 /* If this is a plain branch rather than a branch
4fa1c237
AM
11848 and link, don't require a nop. However, don't
11849 allow tail calls in a shared library as they
11850 will result in r2 being corrupted. */
b25116a9
AM
11851 unsigned long br;
11852 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 11853 if (info->executable && (br & 1) == 0)
b25116a9 11854 can_plt_call = TRUE;
15b552e9
AM
11855 else
11856 stub_entry = NULL;
ad8e1ba5 11857 }
6ab189d5 11858 else if (h != NULL
039b3fef 11859 && strcmp (h->elf.root.root.string,
6ab189d5
AM
11860 ".__libc_start_main") == 0)
11861 {
11862 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 11863 can_plt_call = TRUE;
6ab189d5 11864 }
ad8e1ba5
AM
11865 else
11866 {
11867 if (strcmp (input_section->output_section->name,
11868 ".init") == 0
11869 || strcmp (input_section->output_section->name,
11870 ".fini") == 0)
11871 (*_bfd_error_handler)
d003868e 11872 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM
11873 "not supported using your crt files; "
11874 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM
11875 input_bfd,
11876 input_section,
ad8e1ba5
AM
11877 (long) rel->r_offset);
11878 else
11879 (*_bfd_error_handler)
d003868e 11880 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM
11881 "does not allow automatic multiple TOCs; "
11882 "recompile with -mminimal-toc or "
11883 "-fno-optimize-sibling-calls, "
11884 "or make `%s' extern"),
d003868e
AM
11885 input_bfd,
11886 input_section,
ad8e1ba5
AM
11887 (long) rel->r_offset,
11888 sym_name,
11889 sym_name);
11890 bfd_set_error (bfd_error_bad_value);
11891 ret = FALSE;
11892 }
721956f4
AM
11893 }
11894
b25116a9
AM
11895 if (can_plt_call
11896 && stub_entry->stub_type == ppc_stub_plt_call)
11897 unresolved_reloc = FALSE;
11898 }
11899
8387904d
AM
11900 if (stub_entry == NULL
11901 && get_opd_info (sec) != NULL)
11902 {
11903 /* The branch destination is the value of the opd entry. */
4cc603a5
AM
11904 bfd_vma off = (relocation + addend
11905 - sec->output_section->vma
11906 - sec->output_offset);
8387904d
AM
11907 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
11908 if (dest != (bfd_vma) -1)
11909 {
11910 relocation = dest;
11911 addend = 0;
11912 }
11913 }
11914
b25116a9
AM
11915 /* If the branch is out of reach we ought to have a long
11916 branch stub. */
11917 from = (rel->r_offset
11918 + input_section->output_offset
11919 + input_section->output_section->vma);
11920
11921 if (stub_entry == NULL
4cc603a5 11922 && (relocation + addend - from + max_br_offset
b25116a9
AM
11923 >= 2 * max_br_offset)
11924 && r_type != R_PPC64_ADDR14_BRTAKEN
11925 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM
11926 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
11927 htab);
b25116a9
AM
11928
11929 if (stub_entry != NULL)
11930 {
11931 /* Munge up the value and addend so that we call the stub
11932 rather than the procedure directly. */
11933 relocation = (stub_entry->stub_offset
11934 + stub_entry->stub_sec->output_offset
11935 + stub_entry->stub_sec->output_section->vma);
11936 addend = 0;
11937 }
11938
11939 if (insn != 0)
11940 {
11941 if (is_power4)
721956f4 11942 {
b25116a9
AM
11943 /* Set 'a' bit. This is 0b00010 in BO field for branch
11944 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11945 for branch on CTR insns (BO == 1a00t or 1a01t). */
11946 if ((insn & (0x14 << 21)) == (0x04 << 21))
11947 insn |= 0x02 << 21;
11948 else if ((insn & (0x14 << 21)) == (0x10 << 21))
11949 insn |= 0x08 << 21;
11950 else
11951 break;
11952 }
11953 else
11954 {
11955 /* Invert 'y' bit if not the default. */
4cc603a5 11956 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 11957 insn ^= 0x01 << 21;
721956f4 11958 }
b25116a9
AM
11959
11960 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 11961 }
e86ce104 11962
06da1e8e
AM
11963 /* NOP out calls to undefined weak functions.
11964 We can thus call a weak function without first
11965 checking whether the function is defined. */
b25116a9 11966 else if (h != NULL
039b3fef 11967 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 11968 && h->elf.dynindx == -1
b25116a9
AM
11969 && r_type == R_PPC64_REL24
11970 && relocation == 0
4cc603a5 11971 && addend == 0)
e86ce104 11972 {
06da1e8e
AM
11973 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11974 continue;
e86ce104 11975 }
65f38f15
AM
11976 break;
11977 }
5bd4f169 11978
65f38f15 11979 /* Set `addend'. */
411e1bfb 11980 tls_type = 0;
65f38f15
AM
11981 switch (r_type)
11982 {
11983 default:
11984 (*_bfd_error_handler)
d003868e
AM
11985 (_("%B: unknown relocation type %d for symbol %s"),
11986 input_bfd, (int) r_type, sym_name);
5bd4f169 11987
65f38f15 11988 bfd_set_error (bfd_error_bad_value);
b34976b6 11989 ret = FALSE;
65f38f15 11990 continue;
5bd4f169 11991
65f38f15 11992 case R_PPC64_NONE:
411e1bfb 11993 case R_PPC64_TLS:
727fc41e
AM
11994 case R_PPC64_TLSGD:
11995 case R_PPC64_TLSLD:
04c9666a
AM
11996 case R_PPC64_GNU_VTINHERIT:
11997 case R_PPC64_GNU_VTENTRY:
65f38f15 11998 continue;
5bd4f169
AM
11999
12000 /* GOT16 relocations. Like an ADDR16 using the symbol's
12001 address in the GOT as relocation value instead of the
411e1bfb 12002 symbol's value itself. Also, create a GOT entry for the
5bd4f169 12003 symbol and put the symbol value there. */
411e1bfb
AM
12004 case R_PPC64_GOT_TLSGD16:
12005 case R_PPC64_GOT_TLSGD16_LO:
12006 case R_PPC64_GOT_TLSGD16_HI:
12007 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 12008 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
12009 goto dogot;
12010
12011 case R_PPC64_GOT_TLSLD16:
12012 case R_PPC64_GOT_TLSLD16_LO:
12013 case R_PPC64_GOT_TLSLD16_HI:
12014 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 12015 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
12016 goto dogot;
12017
12018 case R_PPC64_GOT_TPREL16_DS:
12019 case R_PPC64_GOT_TPREL16_LO_DS:
12020 case R_PPC64_GOT_TPREL16_HI:
12021 case R_PPC64_GOT_TPREL16_HA:
12022 tls_type = TLS_TLS | TLS_TPREL;
12023 goto dogot;
12024
12025 case R_PPC64_GOT_DTPREL16_DS:
12026 case R_PPC64_GOT_DTPREL16_LO_DS:
12027 case R_PPC64_GOT_DTPREL16_HI:
12028 case R_PPC64_GOT_DTPREL16_HA:
12029 tls_type = TLS_TLS | TLS_DTPREL;
12030 goto dogot;
12031
65f38f15
AM
12032 case R_PPC64_GOT16:
12033 case R_PPC64_GOT16_LO:
12034 case R_PPC64_GOT16_HI:
12035 case R_PPC64_GOT16_HA:
12036 case R_PPC64_GOT16_DS:
12037 case R_PPC64_GOT16_LO_DS:
411e1bfb 12038 dogot:
5bd4f169
AM
12039 {
12040 /* Relocation is to the entry for this symbol in the global
12041 offset table. */
e717da7e 12042 asection *got;
d881513a 12043 bfd_vma *offp;
5bd4f169 12044 bfd_vma off;
d881513a 12045 unsigned long indx = 0;
927be08e 12046 struct got_entry *ent;
65f38f15 12047
d881513a
AM
12048 if (tls_type == (TLS_TLS | TLS_LD)
12049 && (h == NULL
f5385ebf 12050 || !h->elf.def_dynamic))
927be08e 12051 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 12052 else
5bd4f169 12053 {
5bd4f169 12054
d881513a
AM
12055 if (h != NULL)
12056 {
12057 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM
12058 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12059 &h->elf)
d881513a 12060 || (info->shared
039b3fef 12061 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM
12062 /* This is actually a static link, or it is a
12063 -Bsymbolic link and the symbol is defined
12064 locally, or the symbol was forced to be local
12065 because of a version file. */
12066 ;
12067 else
12068 {
039b3fef 12069 indx = h->elf.dynindx;
d881513a
AM
12070 unresolved_reloc = FALSE;
12071 }
039b3fef 12072 ent = h->elf.got.glist;
d881513a 12073 }
411e1bfb 12074 else
5bd4f169 12075 {
d881513a
AM
12076 if (local_got_ents == NULL)
12077 abort ();
12078 ent = local_got_ents[r_symndx];
5bd4f169 12079 }
d881513a
AM
12080
12081 for (; ent != NULL; ent = ent->next)
4cc603a5 12082 if (ent->addend == orig_addend
e717da7e 12083 && ent->owner == input_bfd
d881513a
AM
12084 && ent->tls_type == tls_type)
12085 break;
5bd4f169 12086 }
411e1bfb 12087
927be08e
AM
12088 if (ent == NULL)
12089 abort ();
12090 if (ent->is_indirect)
12091 ent = ent->got.ent;
12092 offp = &ent->got.offset;
12093 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM
12094 if (got == NULL)
12095 abort ();
12096
411e1bfb
AM
12097 /* The offset must always be a multiple of 8. We use the
12098 least significant bit to record whether we have already
12099 processed this entry. */
d881513a 12100 off = *offp;
411e1bfb
AM
12101 if ((off & 1) != 0)
12102 off &= ~1;
5bd4f169
AM
12103 else
12104 {
411e1bfb
AM
12105 /* Generate relocs for the dynamic linker, except in
12106 the case of TLSLD where we'll use one entry per
12107 module. */
25f23106
AM
12108 asection *relgot;
12109 bfd_boolean ifunc;
e717da7e 12110
d881513a 12111 *offp = off | 1;
25f23106
AM
12112 relgot = NULL;
12113 ifunc = (h != NULL
12114 ? h->elf.type == STT_GNU_IFUNC
12115 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
4e795f50 12116 if ((info->shared || indx != 0)
927be08e
AM
12117 && (h == NULL
12118 || (tls_type == (TLS_TLS | TLS_LD)
12119 && !h->elf.def_dynamic)
039b3fef
AM
12120 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12121 || h->elf.root.type != bfd_link_hash_undefweak))
927be08e 12122 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106
AM
12123 else if (ifunc)
12124 relgot = htab->reliplt;
12125 if (relgot != NULL)
5bd4f169 12126 {
e717da7e
AM
12127 outrel.r_offset = (got->output_section->vma
12128 + got->output_offset
411e1bfb 12129 + off);
4cc603a5 12130 outrel.r_addend = addend;
d881513a 12131 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 12132 {
411e1bfb 12133 outrel.r_addend = 0;
e515b051 12134 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM
12135 if (tls_type == (TLS_TLS | TLS_GD))
12136 {
e717da7e
AM
12137 loc = relgot->contents;
12138 loc += (relgot->reloc_count++
d881513a
AM
12139 * sizeof (Elf64_External_Rela));
12140 bfd_elf64_swap_reloca_out (output_bfd,
12141 &outrel, loc);
e515b051 12142 outrel.r_offset += 8;
4cc603a5 12143 outrel.r_addend = addend;
d881513a
AM
12144 outrel.r_info
12145 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 12146 }
411e1bfb 12147 }
951fd09b 12148 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 12149 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 12150 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 12151 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM
12152 else if (indx != 0)
12153 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12154 else
81407a69 12155 {
25f23106
AM
12156 if (ifunc)
12157 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12158 else
12159 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM
12160
12161 /* Write the .got section contents for the sake
12162 of prelink. */
e717da7e 12163 loc = got->contents + off;
23fbd6fa
JJ
12164 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12165 loc);
81407a69 12166 }
81407a69
AM
12167
12168 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM
12169 {
12170 outrel.r_addend += relocation;
12171 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 12172 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 12173 }
e717da7e
AM
12174 loc = relgot->contents;
12175 loc += (relgot->reloc_count++
411e1bfb
AM
12176 * sizeof (Elf64_External_Rela));
12177 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12178 }
12179
ad8e1ba5 12180 /* Init the .got section contents here if we're not
81407a69 12181 emitting a reloc. */
d881513a 12182 else
411e1bfb 12183 {
4cc603a5 12184 relocation += addend;
7b609f53
AM
12185 if (tls_type == (TLS_TLS | TLS_LD))
12186 relocation = 1;
12187 else if (tls_type != 0)
411e1bfb 12188 {
e1918d23 12189 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 12190 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 12191 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 12192
7b609f53
AM
12193 if (tls_type == (TLS_TLS | TLS_GD))
12194 {
12195 bfd_put_64 (output_bfd, relocation,
e717da7e 12196 got->contents + off + 8);
7b609f53
AM
12197 relocation = 1;
12198 }
411e1bfb 12199 }
7b609f53 12200
411e1bfb 12201 bfd_put_64 (output_bfd, relocation,
e717da7e 12202 got->contents + off);
5bd4f169
AM
12203 }
12204 }
12205
65f38f15
AM
12206 if (off >= (bfd_vma) -2)
12207 abort ();
12208
bf102f86
AM
12209 relocation = got->output_section->vma + got->output_offset + off;
12210 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 12211 }
65f38f15
AM
12212 break;
12213
12214 case R_PPC64_PLT16_HA:
12215 case R_PPC64_PLT16_HI:
12216 case R_PPC64_PLT16_LO:
12217 case R_PPC64_PLT32:
12218 case R_PPC64_PLT64:
12219 /* Relocation is to the entry for this symbol in the
12220 procedure linkage table. */
12221
12222 /* Resolve a PLT reloc against a local symbol directly,
12223 without using the procedure linkage table. */
12224 if (h == NULL)
12225 break;
12226
411e1bfb
AM
12227 /* It's possible that we didn't make a PLT entry for this
12228 symbol. This happens when statically linking PIC code,
12229 or when using -Bsymbolic. Go find a match if there is a
12230 PLT entry. */
4ce794b7 12231 if (htab->plt != NULL)
65f38f15 12232 {
411e1bfb 12233 struct plt_entry *ent;
039b3fef 12234 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 12235 if (ent->addend == orig_addend
411e1bfb
AM
12236 && ent->plt.offset != (bfd_vma) -1)
12237 {
4ce794b7
AM
12238 relocation = (htab->plt->output_section->vma
12239 + htab->plt->output_offset
411e1bfb
AM
12240 + ent->plt.offset);
12241 unresolved_reloc = FALSE;
12242 }
65f38f15 12243 }
65f38f15 12244 break;
5bd4f169 12245
0b13192e
AM
12246 case R_PPC64_TOC:
12247 /* Relocation value is TOC base. */
12248 relocation = TOCstart;
12249 if (r_symndx == 0)
12250 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM
12251 else if (unresolved_reloc)
12252 ;
12253 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM
12254 relocation += htab->stub_group[sec->id].toc_off;
12255 else
12256 unresolved_reloc = TRUE;
ab96bf03 12257 goto dodyn;
0b13192e 12258
5bd4f169
AM
12259 /* TOC16 relocs. We want the offset relative to the TOC base,
12260 which is the address of the start of the TOC plus 0x8000.
12261 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12262 in this order. */
65f38f15
AM
12263 case R_PPC64_TOC16:
12264 case R_PPC64_TOC16_LO:
12265 case R_PPC64_TOC16_HI:
12266 case R_PPC64_TOC16_DS:
12267 case R_PPC64_TOC16_LO_DS:
12268 case R_PPC64_TOC16_HA:
ad8e1ba5 12269 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM
12270 break;
12271
12272 /* Relocate against the beginning of the section. */
65f38f15
AM
12273 case R_PPC64_SECTOFF:
12274 case R_PPC64_SECTOFF_LO:
12275 case R_PPC64_SECTOFF_HI:
12276 case R_PPC64_SECTOFF_DS:
12277 case R_PPC64_SECTOFF_LO_DS:
12278 case R_PPC64_SECTOFF_HA:
4ce794b7 12279 if (sec != NULL)
65f38f15 12280 addend -= sec->output_section->vma;
5bd4f169
AM
12281 break;
12282
25f23106
AM
12283 case R_PPC64_REL16:
12284 case R_PPC64_REL16_LO:
12285 case R_PPC64_REL16_HI:
12286 case R_PPC64_REL16_HA:
12287 break;
12288
721956f4
AM
12289 case R_PPC64_REL14:
12290 case R_PPC64_REL14_BRNTAKEN:
12291 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM
12292 case R_PPC64_REL24:
12293 break;
12294
411e1bfb
AM
12295 case R_PPC64_TPREL16:
12296 case R_PPC64_TPREL16_LO:
12297 case R_PPC64_TPREL16_HI:
12298 case R_PPC64_TPREL16_HA:
12299 case R_PPC64_TPREL16_DS:
12300 case R_PPC64_TPREL16_LO_DS:
12301 case R_PPC64_TPREL16_HIGHER:
12302 case R_PPC64_TPREL16_HIGHERA:
12303 case R_PPC64_TPREL16_HIGHEST:
12304 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM
12305 if (h != NULL
12306 && h->elf.root.type == bfd_link_hash_undefweak
12307 && h->elf.dynindx == -1)
12308 {
12309 /* Make this relocation against an undefined weak symbol
12310 resolve to zero. This is really just a tweak, since
12311 code using weak externs ought to check that they are
12312 defined before using them. */
12313 bfd_byte *p = contents + rel->r_offset - d_offset;
12314
12315 insn = bfd_get_32 (output_bfd, p);
12316 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12317 if (insn != 0)
12318 bfd_put_32 (output_bfd, insn, p);
12319 break;
12320 }
e1918d23 12321 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
12322 if (info->shared)
12323 /* The TPREL16 relocs shouldn't really be used in shared
12324 libs as they will result in DT_TEXTREL being set, but
12325 support them anyway. */
12326 goto dodyn;
12327 break;
12328
12329 case R_PPC64_DTPREL16:
12330 case R_PPC64_DTPREL16_LO:
12331 case R_PPC64_DTPREL16_HI:
12332 case R_PPC64_DTPREL16_HA:
12333 case R_PPC64_DTPREL16_DS:
12334 case R_PPC64_DTPREL16_LO_DS:
12335 case R_PPC64_DTPREL16_HIGHER:
12336 case R_PPC64_DTPREL16_HIGHERA:
12337 case R_PPC64_DTPREL16_HIGHEST:
12338 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 12339 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
12340 break;
12341
e515b051
AM
12342 case R_PPC64_DTPMOD64:
12343 relocation = 1;
12344 addend = 0;
12345 goto dodyn;
12346
411e1bfb 12347 case R_PPC64_TPREL64:
e1918d23 12348 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
12349 goto dodyn;
12350
12351 case R_PPC64_DTPREL64:
e1918d23 12352 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
12353 /* Fall thru */
12354
65f38f15
AM
12355 /* Relocations that may need to be propagated if this is a
12356 dynamic object. */
04c9666a 12357 case R_PPC64_REL30:
65f38f15
AM
12358 case R_PPC64_REL32:
12359 case R_PPC64_REL64:
12360 case R_PPC64_ADDR14:
12361 case R_PPC64_ADDR14_BRNTAKEN:
12362 case R_PPC64_ADDR14_BRTAKEN:
12363 case R_PPC64_ADDR16:
12364 case R_PPC64_ADDR16_DS:
12365 case R_PPC64_ADDR16_HA:
12366 case R_PPC64_ADDR16_HI:
12367 case R_PPC64_ADDR16_HIGHER:
12368 case R_PPC64_ADDR16_HIGHERA:
12369 case R_PPC64_ADDR16_HIGHEST:
12370 case R_PPC64_ADDR16_HIGHESTA:
12371 case R_PPC64_ADDR16_LO:
12372 case R_PPC64_ADDR16_LO_DS:
12373 case R_PPC64_ADDR24:
65f38f15
AM
12374 case R_PPC64_ADDR32:
12375 case R_PPC64_ADDR64:
12376 case R_PPC64_UADDR16:
12377 case R_PPC64_UADDR32:
12378 case R_PPC64_UADDR64:
411e1bfb 12379 dodyn:
5d1634d7 12380 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
12381 break;
12382
41bd81ab
AM
12383 if (NO_OPD_RELOCS && is_opd)
12384 break;
12385
65f38f15 12386 if ((info->shared
4e795f50 12387 && (h == NULL
039b3fef
AM
12388 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12389 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 12390 && (must_be_dyn_reloc (info, r_type)
039b3fef 12391 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM
12392 || (ELIMINATE_COPY_RELOCS
12393 && !info->shared
65f38f15 12394 && h != NULL
039b3fef 12395 && h->elf.dynindx != -1
f5385ebf 12396 && !h->elf.non_got_ref
25f23106
AM
12397 && !h->elf.def_regular)
12398 || (!info->shared
12399 && (h != NULL
12400 ? h->elf.type == STT_GNU_IFUNC
12401 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 12402 {
b34976b6 12403 bfd_boolean skip, relocate;
65f38f15 12404 asection *sreloc;
1cf1f670 12405 bfd_vma out_off;
65f38f15
AM
12406
12407 /* When generating a dynamic object, these relocations
12408 are copied into the output file to be resolved at run
12409 time. */
12410
b34976b6
AM
12411 skip = FALSE;
12412 relocate = FALSE;
65f38f15 12413
1cf1f670
AM
12414 out_off = _bfd_elf_section_offset (output_bfd, info,
12415 input_section, rel->r_offset);
12416 if (out_off == (bfd_vma) -1)
b34976b6 12417 skip = TRUE;
1cf1f670 12418 else if (out_off == (bfd_vma) -2)
b34976b6 12419 skip = TRUE, relocate = TRUE;
1cf1f670
AM
12420 out_off += (input_section->output_section->vma
12421 + input_section->output_offset);
12422 outrel.r_offset = out_off;
411e1bfb 12423 outrel.r_addend = rel->r_addend;
65f38f15 12424
1cf1f670
AM
12425 /* Optimize unaligned reloc use. */
12426 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12427 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12428 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12429 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12430 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12431 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12432 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12433 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12434 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12435
65f38f15 12436 if (skip)
0bb2d96a 12437 memset (&outrel, 0, sizeof outrel);
039b3fef 12438 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM
12439 && !is_opd
12440 && r_type != R_PPC64_TOC)
039b3fef 12441 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM
12442 else
12443 {
41bd81ab
AM
12444 /* This symbol is local, or marked to become local,
12445 or this is an opd section reloc which must point
12446 at a local function. */
65f38f15 12447 outrel.r_addend += relocation;
e86ce104 12448 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 12449 {
3fad3c7c 12450 if (is_opd && h != NULL)
afbe61cf
AM
12451 {
12452 /* Lie about opd entries. This case occurs
12453 when building shared libraries and we
12454 reference a function in another shared
3fad3c7c
AM
12455 lib. The same thing happens for a weak
12456 definition in an application that's
12457 overridden by a strong definition in a
12458 shared lib. (I believe this is a generic
12459 bug in binutils handling of weak syms.)
12460 In these cases we won't use the opd
1e2f5b6e 12461 entry in this lib. */
b34976b6 12462 unresolved_reloc = FALSE;
afbe61cf 12463 }
25f23106
AM
12464 if (!is_opd
12465 && r_type == R_PPC64_ADDR64
12466 && (h != NULL
12467 ? h->elf.type == STT_GNU_IFUNC
12468 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12469 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12470 else
12471 {
12472 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 12473
25f23106
AM
12474 /* We need to relocate .opd contents for ld.so.
12475 Prelink also wants simple and consistent rules
12476 for relocs. This make all RELATIVE relocs have
12477 *r_offset equal to r_addend. */
12478 relocate = TRUE;
12479 }
65f38f15
AM
12480 }
12481 else
12482 {
12483 long indx = 0;
12484
25f23106
AM
12485 if (h != NULL
12486 ? h->elf.type == STT_GNU_IFUNC
12487 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12488 {
12489 (*_bfd_error_handler)
12490 (_("%B(%A+0x%lx): relocation %s for indirect "
12491 "function %s unsupported"),
12492 input_bfd,
12493 input_section,
12494 (long) rel->r_offset,
12495 ppc64_elf_howto_table[r_type]->name,
12496 sym_name);
12497 ret = FALSE;
12498 }
12499 else if (r_symndx == 0 || bfd_is_abs_section (sec))
65f38f15
AM
12500 ;
12501 else if (sec == NULL || sec->owner == NULL)
12502 {
12503 bfd_set_error (bfd_error_bad_value);
b34976b6 12504 return FALSE;
65f38f15
AM
12505 }
12506 else
12507 {
12508 asection *osec;
12509
12510 osec = sec->output_section;
12511 indx = elf_section_data (osec)->dynindx;
12512
74541ad4
AM
12513 if (indx == 0)
12514 {
12515 if ((osec->flags & SEC_READONLY) == 0
12516 && htab->elf.data_index_section != NULL)
12517 osec = htab->elf.data_index_section;
12518 else
12519 osec = htab->elf.text_index_section;
12520 indx = elf_section_data (osec)->dynindx;
12521 }
12522 BFD_ASSERT (indx != 0);
12523
65f38f15
AM
12524 /* We are turning this relocation into one
12525 against a section symbol, so subtract out
12526 the output section's address but not the
12527 offset of the input section in the output
12528 section. */
12529 outrel.r_addend -= osec->vma;
12530 }
12531
12532 outrel.r_info = ELF64_R_INFO (indx, r_type);
12533 }
12534 }
12535
12536 sreloc = elf_section_data (input_section)->sreloc;
25f23106
AM
12537 if (!htab->elf.dynamic_sections_created)
12538 sreloc = htab->reliplt;
65f38f15
AM
12539 if (sreloc == NULL)
12540 abort ();
12541
dfbb6ac9
AM
12542 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
12543 >= sreloc->size)
12544 abort ();
947216bf
AM
12545 loc = sreloc->contents;
12546 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM
12547 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12548
12549 /* If this reloc is against an external symbol, it will
12550 be computed at runtime, so there's no need to do
81407a69
AM
12551 anything now. However, for the sake of prelink ensure
12552 that the section contents are a known value. */
65f38f15 12553 if (! relocate)
81407a69
AM
12554 {
12555 unresolved_reloc = FALSE;
12556 /* The value chosen here is quite arbitrary as ld.so
12557 ignores section contents except for the special
12558 case of .opd where the contents might be accessed
12559 before relocation. Choose zero, as that won't
12560 cause reloc overflow. */
12561 relocation = 0;
12562 addend = 0;
12563 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12564 to improve backward compatibility with older
12565 versions of ld. */
12566 if (r_type == R_PPC64_ADDR64)
12567 addend = outrel.r_addend;
12568 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 12569 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM
12570 addend = (input_section->output_section->vma
12571 + input_section->output_offset
12572 + rel->r_offset);
81407a69 12573 }
65f38f15 12574 }
5bd4f169
AM
12575 break;
12576
65f38f15
AM
12577 case R_PPC64_COPY:
12578 case R_PPC64_GLOB_DAT:
12579 case R_PPC64_JMP_SLOT:
25f23106 12580 case R_PPC64_JMP_IREL:
65f38f15
AM
12581 case R_PPC64_RELATIVE:
12582 /* We shouldn't ever see these dynamic relocs in relocatable
12583 files. */
ae9a127f 12584 /* Fall through. */
65f38f15
AM
12585
12586 case R_PPC64_PLTGOT16:
12587 case R_PPC64_PLTGOT16_DS:
12588 case R_PPC64_PLTGOT16_HA:
12589 case R_PPC64_PLTGOT16_HI:
12590 case R_PPC64_PLTGOT16_LO:
12591 case R_PPC64_PLTGOT16_LO_DS:
12592 case R_PPC64_PLTREL32:
12593 case R_PPC64_PLTREL64:
12594 /* These ones haven't been implemented yet. */
12595
12596 (*_bfd_error_handler)
d003868e
AM
12597 (_("%B: relocation %s is not supported for symbol %s."),
12598 input_bfd,
4ce794b7 12599 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM
12600
12601 bfd_set_error (bfd_error_invalid_operation);
b34976b6 12602 ret = FALSE;
5bd4f169 12603 continue;
65f38f15 12604 }
5bd4f169 12605
65f38f15
AM
12606 /* Do any further special processing. */
12607 switch (r_type)
12608 {
12609 default:
12610 break;
12611
12612 case R_PPC64_ADDR16_HA:
25f23106 12613 case R_PPC64_REL16_HA:
65f38f15
AM
12614 case R_PPC64_ADDR16_HIGHERA:
12615 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM
12616 case R_PPC64_TOC16_HA:
12617 case R_PPC64_SECTOFF_HA:
411e1bfb
AM
12618 case R_PPC64_TPREL16_HA:
12619 case R_PPC64_DTPREL16_HA:
411e1bfb
AM
12620 case R_PPC64_TPREL16_HIGHER:
12621 case R_PPC64_TPREL16_HIGHERA:
12622 case R_PPC64_TPREL16_HIGHEST:
12623 case R_PPC64_TPREL16_HIGHESTA:
12624 case R_PPC64_DTPREL16_HIGHER:
12625 case R_PPC64_DTPREL16_HIGHERA:
12626 case R_PPC64_DTPREL16_HIGHEST:
12627 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM
12628 /* It's just possible that this symbol is a weak symbol
12629 that's not actually defined anywhere. In that case,
12630 'sec' would be NULL, and we should leave the symbol
12631 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
12632 if (sec == NULL)
12633 break;
12634 /* Fall thru */
12635
12636 case R_PPC64_GOT16_HA:
12637 case R_PPC64_PLTGOT16_HA:
12638 case R_PPC64_PLT16_HA:
12639 case R_PPC64_GOT_TLSGD16_HA:
12640 case R_PPC64_GOT_TLSLD16_HA:
12641 case R_PPC64_GOT_TPREL16_HA:
12642 case R_PPC64_GOT_DTPREL16_HA:
12643 /* Add 0x10000 if sign bit in 0:15 is set.
12644 Bits 0:15 are not used. */
12645 addend += 0x8000;
65f38f15
AM
12646 break;
12647
12648 case R_PPC64_ADDR16_DS:
12649 case R_PPC64_ADDR16_LO_DS:
12650 case R_PPC64_GOT16_DS:
12651 case R_PPC64_GOT16_LO_DS:
12652 case R_PPC64_PLT16_LO_DS:
12653 case R_PPC64_SECTOFF_DS:
12654 case R_PPC64_SECTOFF_LO_DS:
12655 case R_PPC64_TOC16_DS:
12656 case R_PPC64_TOC16_LO_DS:
12657 case R_PPC64_PLTGOT16_DS:
12658 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM
12659 case R_PPC64_GOT_TPREL16_DS:
12660 case R_PPC64_GOT_TPREL16_LO_DS:
12661 case R_PPC64_GOT_DTPREL16_DS:
12662 case R_PPC64_GOT_DTPREL16_LO_DS:
12663 case R_PPC64_TPREL16_DS:
12664 case R_PPC64_TPREL16_LO_DS:
12665 case R_PPC64_DTPREL16_DS:
12666 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM
12667 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
12668 mask = 3;
12669 /* If this reloc is against an lq insn, then the value must be
12670 a multiple of 16. This is somewhat of a hack, but the
12671 "correct" way to do this by defining _DQ forms of all the
12672 _DS relocs bloats all reloc switches in this file. It
12673 doesn't seem to make much sense to use any of these relocs
12674 in data, so testing the insn should be safe. */
494dac0c 12675 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM
12676 mask = 15;
12677 if (((relocation + addend) & mask) != 0)
65f38f15
AM
12678 {
12679 (*_bfd_error_handler)
d003868e
AM
12680 (_("%B: error: relocation %s not a multiple of %d"),
12681 input_bfd,
4ce794b7 12682 ppc64_elf_howto_table[r_type]->name,
adadcc0c 12683 mask + 1);
65f38f15 12684 bfd_set_error (bfd_error_bad_value);
b34976b6 12685 ret = FALSE;
65f38f15
AM
12686 continue;
12687 }
12688 break;
5bd4f169
AM
12689 }
12690
239e1f3a
AM
12691 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12692 because such sections are not SEC_ALLOC and thus ld.so will
12693 not process them. */
65f38f15 12694 if (unresolved_reloc
239e1f3a 12695 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 12696 && h->elf.def_dynamic))
9c07fe7c
AM
12697 {
12698 (*_bfd_error_handler)
d003868e
AM
12699 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12700 input_bfd,
12701 input_section,
9c07fe7c 12702 (long) rel->r_offset,
7b609f53 12703 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 12704 h->elf.root.root.string);
b34976b6 12705 ret = FALSE;
9c07fe7c 12706 }
5bd4f169 12707
65f38f15 12708 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM
12709 input_bfd,
12710 input_section,
12711 contents,
411e1bfb 12712 rel->r_offset,
5bd4f169
AM
12713 relocation,
12714 addend);
12715
ef60b7ff 12716 if (r != bfd_reloc_ok)
5bd4f169 12717 {
cd27b276
AM
12718 if (sym_name == NULL)
12719 sym_name = "(null)";
12720 if (r == bfd_reloc_overflow)
5bd4f169 12721 {
cd27b276
AM
12722 if (warned)
12723 continue;
12724 if (h != NULL
039b3fef 12725 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 12726 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM
12727 {
12728 /* Assume this is a call protected by other code that
12729 detects the symbol is undefined. If this is the case,
12730 we can safely ignore the overflow. If not, the
12731 program is hosed anyway, and a little warning isn't
12732 going to help. */
12733
12734 continue;
12735 }
12736
ef60b7ff 12737 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
12738 (info, (h ? &h->elf.root : NULL), sym_name,
12739 ppc64_elf_howto_table[r_type]->name,
4cc603a5 12740 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 12741 return FALSE;
ef60b7ff
AM
12742 }
12743 else
12744 {
12745 (*_bfd_error_handler)
d003868e
AM
12746 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12747 input_bfd,
12748 input_section,
7b609f53 12749 (long) rel->r_offset,
4ce794b7 12750 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM
12751 sym_name,
12752 (int) r);
b34976b6 12753 ret = FALSE;
ef60b7ff 12754 }
5bd4f169 12755 }
5bd4f169
AM
12756 }
12757
645ea6a9
AM
12758 /* If we're emitting relocations, then shortly after this function
12759 returns, reloc offsets and addends for this section will be
12760 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM
12761 file rather than the input. Save a copy of the relocs for
12762 opd_entry_value. */
4cc603a5 12763 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM
12764 {
12765 bfd_size_type amt;
12766 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
12767 rel = bfd_alloc (input_bfd, amt);
12768 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
12769 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
12770 if (rel == NULL)
12771 return FALSE;
12772 memcpy (rel, relocs, amt);
12773 }
5bd4f169
AM
12774 return ret;
12775}
12776
754021d0
AM
12777/* Adjust the value of any local symbols in opd sections. */
12778
6e0b88f1 12779static int
754021d0
AM
12780ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
12781 const char *name ATTRIBUTE_UNUSED,
12782 Elf_Internal_Sym *elfsym,
12783 asection *input_sec,
12784 struct elf_link_hash_entry *h)
12785{
74f0fb50
AM
12786 struct _opd_sec_data *opd;
12787 long adjust;
754021d0
AM
12788 bfd_vma value;
12789
4025353c 12790 if (h != NULL)
6e0b88f1 12791 return 1;
4025353c 12792
74f0fb50
AM
12793 opd = get_opd_info (input_sec);
12794 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 12795 return 1;
754021d0
AM
12796
12797 value = elfsym->st_value - input_sec->output_offset;
12798 if (!info->relocatable)
12799 value -= input_sec->output_section->vma;
12800
74f0fb50 12801 adjust = opd->adjust[value / 8];
4025353c 12802 if (adjust == -1)
6e0b88f1
AM
12803 return 2;
12804
12805 elfsym->st_value += adjust;
12806 return 1;
754021d0
AM
12807}
12808
5bd4f169
AM
12809/* Finish up dynamic symbol handling. We set the contents of various
12810 dynamic sections here. */
12811
b34976b6 12812static bfd_boolean
4ce794b7
AM
12813ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
12814 struct bfd_link_info *info,
12815 struct elf_link_hash_entry *h,
12816 Elf_Internal_Sym *sym)
5bd4f169 12817{
65f38f15 12818 struct ppc_link_hash_table *htab;
8387904d
AM
12819 struct plt_entry *ent;
12820 Elf_Internal_Rela rela;
12821 bfd_byte *loc;
5bd4f169 12822
65f38f15 12823 htab = ppc_hash_table (info);
4dfe6ac6
NC
12824 if (htab == NULL)
12825 return FALSE;
5bd4f169 12826
8387904d
AM
12827 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
12828 if (ent->plt.offset != (bfd_vma) -1)
12829 {
12830 /* This symbol has an entry in the procedure linkage
12831 table. Set it up. */
e054468f
AM
12832 if (!htab->elf.dynamic_sections_created
12833 || h->dynindx == -1)
12834 {
12835 BFD_ASSERT (h->type == STT_GNU_IFUNC
12836 && h->def_regular
12837 && (h->root.type == bfd_link_hash_defined
12838 || h->root.type == bfd_link_hash_defweak));
25f23106
AM
12839 rela.r_offset = (htab->iplt->output_section->vma
12840 + htab->iplt->output_offset
12841 + ent->plt.offset);
12842 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
e054468f
AM
12843 rela.r_addend = (h->root.u.def.value
12844 + h->root.u.def.section->output_offset
12845 + h->root.u.def.section->output_section->vma
12846 + ent->addend);
25f23106
AM
12847 loc = (htab->reliplt->contents
12848 + (htab->reliplt->reloc_count++
12849 * sizeof (Elf64_External_Rela)));
e054468f
AM
12850 }
12851 else
12852 {
25f23106
AM
12853 rela.r_offset = (htab->plt->output_section->vma
12854 + htab->plt->output_offset
12855 + ent->plt.offset);
e054468f
AM
12856 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
12857 rela.r_addend = ent->addend;
25f23106
AM
12858 loc = (htab->relplt->contents
12859 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
12860 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
e054468f 12861 }
8387904d
AM
12862 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12863 }
5bd4f169 12864
f5385ebf 12865 if (h->needs_copy)
5bd4f169 12866 {
65f38f15 12867 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 12868
65f38f15
AM
12869 if (h->dynindx == -1
12870 || (h->root.type != bfd_link_hash_defined
12871 && h->root.type != bfd_link_hash_defweak)
4ce794b7 12872 || htab->relbss == NULL)
65f38f15 12873 abort ();
5bd4f169
AM
12874
12875 rela.r_offset = (h->root.u.def.value
12876 + h->root.u.def.section->output_section->vma
12877 + h->root.u.def.section->output_offset);
12878 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
12879 rela.r_addend = 0;
4ce794b7
AM
12880 loc = htab->relbss->contents;
12881 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 12882 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM
12883 }
12884
5bd4f169
AM
12885 /* Mark some specially defined symbols as absolute. */
12886 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
12887 sym->st_shndx = SHN_ABS;
12888
b34976b6 12889 return TRUE;
5bd4f169
AM
12890}
12891
65f38f15
AM
12892/* Used to decide how to sort relocs in an optimal manner for the
12893 dynamic linker, before writing them out. */
12894
12895static enum elf_reloc_type_class
4ce794b7 12896ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 12897{
04c9666a 12898 enum elf_ppc64_reloc_type r_type;
a33d1f77 12899
4ce794b7 12900 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 12901 switch (r_type)
65f38f15
AM
12902 {
12903 case R_PPC64_RELATIVE:
12904 return reloc_class_relative;
12905 case R_PPC64_JMP_SLOT:
12906 return reloc_class_plt;
12907 case R_PPC64_COPY:
12908 return reloc_class_copy;
12909 default:
12910 return reloc_class_normal;
12911 }
12912}
12913
5bd4f169
AM
12914/* Finish up the dynamic sections. */
12915
b34976b6 12916static bfd_boolean
4ce794b7
AM
12917ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
12918 struct bfd_link_info *info)
5bd4f169 12919{
65f38f15
AM
12920 struct ppc_link_hash_table *htab;
12921 bfd *dynobj;
5bd4f169 12922 asection *sdyn;
5bd4f169 12923
65f38f15 12924 htab = ppc_hash_table (info);
4dfe6ac6
NC
12925 if (htab == NULL)
12926 return FALSE;
12927
65f38f15 12928 dynobj = htab->elf.dynobj;
5bd4f169
AM
12929 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
12930
65f38f15 12931 if (htab->elf.dynamic_sections_created)
5bd4f169 12932 {
5bd4f169
AM
12933 Elf64_External_Dyn *dyncon, *dynconend;
12934
4ce794b7 12935 if (sdyn == NULL || htab->got == NULL)
65f38f15 12936 abort ();
5bd4f169
AM
12937
12938 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 12939 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM
12940 for (; dyncon < dynconend; dyncon++)
12941 {
12942 Elf_Internal_Dyn dyn;
19397422 12943 asection *s;
5bd4f169
AM
12944
12945 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
12946
12947 switch (dyn.d_tag)
12948 {
65f38f15
AM
12949 default:
12950 continue;
5bd4f169 12951
5d1634d7 12952 case DT_PPC64_GLINK:
4ce794b7 12953 s = htab->glink;
6348e046 12954 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM
12955 /* We stupidly defined DT_PPC64_GLINK to be the start
12956 of glink rather than the first entry point, which is
12957 what ld.so needs, and now have a bigger stub to
12958 support automatic multiple TOCs. */
12959 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM
12960 break;
12961
19397422
AM
12962 case DT_PPC64_OPD:
12963 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
12964 if (s == NULL)
12965 continue;
12966 dyn.d_un.d_ptr = s->vma;
19397422
AM
12967 break;
12968
12969 case DT_PPC64_OPDSZ:
12970 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
12971 if (s == NULL)
12972 continue;
eea6121a 12973 dyn.d_un.d_val = s->size;
19397422
AM
12974 break;
12975
65f38f15 12976 case DT_PLTGOT:
4ce794b7 12977 s = htab->plt;
6348e046 12978 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM
12979 break;
12980
12981 case DT_JMPREL:
4ce794b7 12982 s = htab->relplt;
6348e046 12983 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 12984 break;
5bd4f169 12985
65f38f15 12986 case DT_PLTRELSZ:
eea6121a 12987 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM
12988 break;
12989
12990 case DT_RELASZ:
12991 /* Don't count procedure linkage table relocs in the
12992 overall reloc count. */
4ce794b7 12993 s = htab->relplt;
6348e046
AM
12994 if (s == NULL)
12995 continue;
eea6121a 12996 dyn.d_un.d_val -= s->size;
6348e046
AM
12997 break;
12998
12999 case DT_RELA:
13000 /* We may not be using the standard ELF linker script.
13001 If .rela.plt is the first .rela section, we adjust
13002 DT_RELA to not include it. */
4ce794b7 13003 s = htab->relplt;
6348e046
AM
13004 if (s == NULL)
13005 continue;
13006 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
13007 continue;
eea6121a 13008 dyn.d_un.d_ptr += s->size;
65f38f15 13009 break;
5bd4f169 13010 }
5bd4f169 13011
65f38f15 13012 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 13013 }
5bd4f169
AM
13014 }
13015
eea6121a 13016 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM
13017 {
13018 /* Fill in the first entry in the global offset table.
13019 We use it to hold the link-time TOCbase. */
13020 bfd_put_64 (output_bfd,
60ee0d4a 13021 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 13022 htab->got->contents);
5d1634d7
AM
13023
13024 /* Set .got entry size. */
4ce794b7 13025 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM
13026 }
13027
eea6121a 13028 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM
13029 {
13030 /* Set .plt entry size. */
4ce794b7 13031 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM
13032 = PLT_ENTRY_SIZE;
13033 }
13034
84f5d08e
AM
13035 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13036 brlt ourselves if emitrelocations. */
13037 if (htab->brlt != NULL
13038 && htab->brlt->reloc_count != 0
13039 && !_bfd_elf_link_output_relocs (output_bfd,
13040 htab->brlt,
13041 &elf_section_data (htab->brlt)->rel_hdr,
13042 elf_section_data (htab->brlt)->relocs,
13043 NULL))
13044 return FALSE;
13045
176a0d42
AM
13046 if (htab->glink != NULL
13047 && htab->glink->reloc_count != 0
13048 && !_bfd_elf_link_output_relocs (output_bfd,
13049 htab->glink,
13050 &elf_section_data (htab->glink)->rel_hdr,
13051 elf_section_data (htab->glink)->relocs,
13052 NULL))
13053 return FALSE;
13054
e717da7e 13055 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM
13056 since we didn't add them to DYNOBJ. We know dynobj is the first
13057 bfd. */
e717da7e
AM
13058 while ((dynobj = dynobj->link_next) != NULL)
13059 {
13060 asection *s;
7b53ace3 13061
0c8d6e5c 13062 if (!is_ppc64_elf (dynobj))
7b53ace3
AM
13063 continue;
13064
e717da7e
AM
13065 s = ppc64_elf_tdata (dynobj)->got;
13066 if (s != NULL
eea6121a 13067 && s->size != 0
e717da7e
AM
13068 && s->output_section != bfd_abs_section_ptr
13069 && !bfd_set_section_contents (output_bfd, s->output_section,
13070 s->contents, s->output_offset,
eea6121a 13071 s->size))
e717da7e
AM
13072 return FALSE;
13073 s = ppc64_elf_tdata (dynobj)->relgot;
13074 if (s != NULL
eea6121a 13075 && s->size != 0
e717da7e
AM
13076 && s->output_section != bfd_abs_section_ptr
13077 && !bfd_set_section_contents (output_bfd, s->output_section,
13078 s->contents, s->output_offset,
eea6121a 13079 s->size))
e717da7e
AM
13080 return FALSE;
13081 }
f6c52c13 13082
b34976b6 13083 return TRUE;
5bd4f169
AM
13084}
13085
5bd4f169 13086#include "elf64-target.h"