* elf32-frv.c: Use info->callbacks->einfo throughout file in linker
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3a71aa26 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
df22d223 3 2009, 2010, 2011 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
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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
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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
ae95ffa6 64#define ELF_TARGET_ID PPC64_ELF_DATA
ad8e1ba5
AM
65#define ELF_MACHINE_CODE EM_PPC64
66#define ELF_MAXPAGESIZE 0x10000
24718e3b 67#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM
68#define elf_info_to_howto ppc64_elf_info_to_howto
69
70#define elf_backend_want_got_sym 0
71#define elf_backend_want_plt_sym 0
72#define elf_backend_plt_alignment 3
73#define elf_backend_plt_not_loaded 1
ad8e1ba5 74#define elf_backend_got_header_size 8
ad8e1ba5
AM
75#define elf_backend_can_gc_sections 1
76#define elf_backend_can_refcount 1
77#define elf_backend_rela_normal 1
6bfdb61b 78#define elf_backend_default_execstack 0
ad8e1ba5 79
e717da7e 80#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 81#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
aa374f67 82#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM
83#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
85#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
86#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 87#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
aa374f67 88#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
ad8e1ba5
AM
89
90#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM
91#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 93#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM
94#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 96#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
7d9616d7 97#define elf_backend_check_directives ppc64_elf_process_dot_syms
97fed1c9 98#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 99#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 100#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 101#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 102#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM
103#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106#define elf_backend_hide_symbol ppc64_elf_hide_symbol
107#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
108#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 109#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 110#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
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111#define elf_backend_relocate_section ppc64_elf_relocate_section
112#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
113#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
114#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 115#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 116#define elf_backend_special_sections ppc64_elf_special_sections
e054468f 117#define elf_backend_post_process_headers _bfd_elf_set_osabi
ad8e1ba5 118
5bd4f169
AM
119/* The name of the dynamic interpreter. This is put in the .interp
120 section. */
121#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
122
123/* The size in bytes of an entry in the procedure linkage table. */
124#define PLT_ENTRY_SIZE 24
125
126/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 127#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
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128
129/* TOC base pointers offset from start of TOC. */
411e1bfb
AM
130#define TOC_BASE_OFF 0x8000
131
132/* Offset of tp and dtp pointers from start of TLS block. */
133#define TP_OFFSET 0x7000
134#define DTP_OFFSET 0x8000
5bd4f169 135
ad8e1ba5
AM
136/* .plt call stub instructions. The normal stub is like this, but
137 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 138 insert an addi to adjust r12. */
ad8e1ba5 139#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM
140#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
141#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
142#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 143#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 144#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
AM
145 /* ld %r11,xxx+16@l(%r12) */
146#define BCTR 0x4e800420 /* bctr */
147
5d1634d7 148
ee4bf8d2 149#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 150#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
ad8e1ba5
AM
151#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
152#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
153
ac2df442
AM
154#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
155#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
156
ad8e1ba5
AM
157#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
158
ee4bf8d2 159/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 160#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM
161 /* 0: */
162 /* .quad plt0-1f */
163 /* __glink: */
164#define MFLR_R12 0x7d8802a6 /* mflr %12 */
165#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
166 /* 1: */
167#define MFLR_R11 0x7d6802a6 /* mflr %11 */
168#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
169#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
170#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
171 /* ld %11,0(%12) */
172 /* ld %2,8(%12) */
173 /* mtctr %11 */
174 /* ld %11,16(%12) */
175 /* bctr */
5d1634d7
AM
176
177/* Pad with this. */
178#define NOP 0x60000000
179
721956f4
AM
180/* Some other nops. */
181#define CROR_151515 0x4def7b82
182#define CROR_313131 0x4ffffb82
183
cedb70c5 184/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM
185#define LI_R0_0 0x38000000 /* li %r0,0 */
186#define B_DOT 0x48000000 /* b . */
187
188/* After that, we need two instructions to load the index, followed by
189 a branch. */
190#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 191#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 192
deb0e272
AM
193/* Instructions used by the save and restore reg functions. */
194#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
195#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
196#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
197#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM
198#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
199#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM
200#define LI_R12_0 0x39800000 /* li %r12,0 */
201#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
202#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
203#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM
204#define BLR 0x4e800020 /* blr */
205
41bd81ab
AM
206/* Since .opd is an array of descriptors and each entry will end up
207 with identical R_PPC64_RELATIVE relocs, there is really no need to
208 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 209 relocate .opd without reloc entries. */
41bd81ab
AM
210#ifndef NO_OPD_RELOCS
211#define NO_OPD_RELOCS 0
212#endif
5bd4f169 213\f
f5e87a1d 214#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 215
5bd4f169 216/* Relocation HOWTO's. */
04c9666a 217static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM
218
219static reloc_howto_type ppc64_elf_howto_raw[] = {
220 /* This reloc does nothing. */
221 HOWTO (R_PPC64_NONE, /* type */
222 0, /* rightshift */
411e1bfb
AM
223 2, /* size (0 = byte, 1 = short, 2 = long) */
224 32, /* bitsize */
b34976b6 225 FALSE, /* pc_relative */
5bd4f169 226 0, /* bitpos */
f5e87a1d 227 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM
228 bfd_elf_generic_reloc, /* special_function */
229 "R_PPC64_NONE", /* name */
b34976b6 230 FALSE, /* partial_inplace */
d006db6c 231 0, /* src_mask */
5bd4f169 232 0, /* dst_mask */
b34976b6 233 FALSE), /* pcrel_offset */
5bd4f169
AM
234
235 /* A standard 32 bit relocation. */
236 HOWTO (R_PPC64_ADDR32, /* type */
237 0, /* rightshift */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
239 32, /* bitsize */
b34976b6 240 FALSE, /* pc_relative */
5bd4f169
AM
241 0, /* bitpos */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR32", /* name */
b34976b6 245 FALSE, /* partial_inplace */
5bd4f169
AM
246 0, /* src_mask */
247 0xffffffff, /* dst_mask */
b34976b6 248 FALSE), /* pcrel_offset */
5bd4f169
AM
249
250 /* An absolute 26 bit branch; the lower two bits must be zero.
251 FIXME: we don't check that, we just clear them. */
252 HOWTO (R_PPC64_ADDR24, /* type */
253 0, /* rightshift */
254 2, /* size (0 = byte, 1 = short, 2 = long) */
255 26, /* bitsize */
b34976b6 256 FALSE, /* pc_relative */
5bd4f169
AM
257 0, /* bitpos */
258 complain_overflow_bitfield, /* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC64_ADDR24", /* name */
b34976b6 261 FALSE, /* partial_inplace */
d006db6c 262 0, /* src_mask */
f5e87a1d 263 0x03fffffc, /* dst_mask */
b34976b6 264 FALSE), /* pcrel_offset */
5bd4f169
AM
265
266 /* A standard 16 bit relocation. */
267 HOWTO (R_PPC64_ADDR16, /* type */
268 0, /* rightshift */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
b34976b6 271 FALSE, /* pc_relative */
5bd4f169
AM
272 0, /* bitpos */
273 complain_overflow_bitfield, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC64_ADDR16", /* name */
b34976b6 276 FALSE, /* partial_inplace */
5bd4f169
AM
277 0, /* src_mask */
278 0xffff, /* dst_mask */
b34976b6 279 FALSE), /* pcrel_offset */
5bd4f169
AM
280
281 /* A 16 bit relocation without overflow. */
282 HOWTO (R_PPC64_ADDR16_LO, /* type */
283 0, /* rightshift */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
285 16, /* bitsize */
b34976b6 286 FALSE, /* pc_relative */
5bd4f169
AM
287 0, /* bitpos */
288 complain_overflow_dont,/* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_PPC64_ADDR16_LO", /* name */
b34976b6 291 FALSE, /* partial_inplace */
5bd4f169
AM
292 0, /* src_mask */
293 0xffff, /* dst_mask */
b34976b6 294 FALSE), /* pcrel_offset */
5bd4f169
AM
295
296 /* Bits 16-31 of an address. */
297 HOWTO (R_PPC64_ADDR16_HI, /* type */
298 16, /* rightshift */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
300 16, /* bitsize */
b34976b6 301 FALSE, /* pc_relative */
5bd4f169
AM
302 0, /* bitpos */
303 complain_overflow_dont, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR16_HI", /* name */
b34976b6 306 FALSE, /* partial_inplace */
5bd4f169
AM
307 0, /* src_mask */
308 0xffff, /* dst_mask */
b34976b6 309 FALSE), /* pcrel_offset */
5bd4f169
AM
310
311 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
312 bits, treated as a signed number, is negative. */
313 HOWTO (R_PPC64_ADDR16_HA, /* type */
314 16, /* rightshift */
315 1, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
5bd4f169
AM
318 0, /* bitpos */
319 complain_overflow_dont, /* complain_on_overflow */
805fc799 320 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 321 "R_PPC64_ADDR16_HA", /* name */
b34976b6 322 FALSE, /* partial_inplace */
5bd4f169
AM
323 0, /* src_mask */
324 0xffff, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
5bd4f169
AM
326
327 /* An absolute 16 bit branch; the lower two bits must be zero.
328 FIXME: we don't check that, we just clear them. */
329 HOWTO (R_PPC64_ADDR14, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
b34976b6 333 FALSE, /* pc_relative */
5bd4f169
AM
334 0, /* bitpos */
335 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 336 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 337 "R_PPC64_ADDR14", /* name */
b34976b6 338 FALSE, /* partial_inplace */
d006db6c 339 0, /* src_mask */
f5e87a1d 340 0x0000fffc, /* dst_mask */
b34976b6 341 FALSE), /* pcrel_offset */
5bd4f169
AM
342
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is expected to be taken. The lower two
345 bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 16, /* bitsize */
b34976b6 350 FALSE, /* pc_relative */
5bd4f169
AM
351 0, /* bitpos */
352 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 353 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 354 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 355 FALSE, /* partial_inplace */
d006db6c 356 0, /* src_mask */
f5e87a1d 357 0x0000fffc, /* dst_mask */
b34976b6 358 FALSE), /* pcrel_offset */
5bd4f169
AM
359
360 /* An absolute 16 bit branch, for which bit 10 should be set to
361 indicate that the branch is not expected to be taken. The lower
362 two bits must be zero. */
363 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 16, /* bitsize */
b34976b6 367 FALSE, /* pc_relative */
5bd4f169
AM
368 0, /* bitpos */
369 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 370 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 371 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 372 FALSE, /* partial_inplace */
d006db6c 373 0, /* src_mask */
f5e87a1d 374 0x0000fffc, /* dst_mask */
b34976b6 375 FALSE), /* pcrel_offset */
5bd4f169
AM
376
377 /* A relative 26 bit branch; the lower two bits must be zero. */
378 HOWTO (R_PPC64_REL24, /* type */
379 0, /* rightshift */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
381 26, /* bitsize */
b34976b6 382 TRUE, /* pc_relative */
5bd4f169
AM
383 0, /* bitpos */
384 complain_overflow_signed, /* complain_on_overflow */
2441e016 385 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 386 "R_PPC64_REL24", /* name */
b34976b6 387 FALSE, /* partial_inplace */
d006db6c 388 0, /* src_mask */
f5e87a1d 389 0x03fffffc, /* dst_mask */
b34976b6 390 TRUE), /* pcrel_offset */
5bd4f169
AM
391
392 /* A relative 16 bit branch; the lower two bits must be zero. */
393 HOWTO (R_PPC64_REL14, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 TRUE, /* pc_relative */
5bd4f169
AM
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
2441e016 400 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 401 "R_PPC64_REL14", /* name */
b34976b6 402 FALSE, /* partial_inplace */
d006db6c 403 0, /* src_mask */
f5e87a1d 404 0x0000fffc, /* dst_mask */
b34976b6 405 TRUE), /* pcrel_offset */
5bd4f169
AM
406
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is expected to be taken. The lower two bits must be
409 zero. */
410 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
b34976b6 414 TRUE, /* pc_relative */
5bd4f169
AM
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
805fc799 417 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 418 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 419 FALSE, /* partial_inplace */
d006db6c 420 0, /* src_mask */
f5e87a1d 421 0x0000fffc, /* dst_mask */
b34976b6 422 TRUE), /* pcrel_offset */
5bd4f169
AM
423
424 /* A relative 16 bit branch. Bit 10 should be set to indicate that
425 the branch is not expected to be taken. The lower two bits must
426 be zero. */
427 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
428 0, /* rightshift */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
430 16, /* bitsize */
b34976b6 431 TRUE, /* pc_relative */
5bd4f169
AM
432 0, /* bitpos */
433 complain_overflow_signed, /* complain_on_overflow */
805fc799 434 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 435 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 436 FALSE, /* partial_inplace */
d006db6c 437 0, /* src_mask */
f5e87a1d 438 0x0000fffc, /* dst_mask */
b34976b6 439 TRUE), /* pcrel_offset */
5bd4f169
AM
440
441 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
442 symbol. */
443 HOWTO (R_PPC64_GOT16, /* type */
444 0, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
b34976b6 447 FALSE, /* pc_relative */
5bd4f169
AM
448 0, /* bitpos */
449 complain_overflow_signed, /* complain_on_overflow */
805fc799 450 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 451 "R_PPC64_GOT16", /* name */
b34976b6 452 FALSE, /* partial_inplace */
5bd4f169
AM
453 0, /* src_mask */
454 0xffff, /* dst_mask */
b34976b6 455 FALSE), /* pcrel_offset */
5bd4f169
AM
456
457 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
458 the symbol. */
459 HOWTO (R_PPC64_GOT16_LO, /* type */
460 0, /* rightshift */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
462 16, /* bitsize */
b34976b6 463 FALSE, /* pc_relative */
5bd4f169
AM
464 0, /* bitpos */
465 complain_overflow_dont, /* complain_on_overflow */
805fc799 466 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 467 "R_PPC64_GOT16_LO", /* name */
b34976b6 468 FALSE, /* partial_inplace */
5bd4f169
AM
469 0, /* src_mask */
470 0xffff, /* dst_mask */
b34976b6 471 FALSE), /* pcrel_offset */
5bd4f169
AM
472
473 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
474 the symbol. */
475 HOWTO (R_PPC64_GOT16_HI, /* type */
476 16, /* rightshift */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
b34976b6 479 FALSE, /* pc_relative */
5bd4f169
AM
480 0, /* bitpos */
481 complain_overflow_dont,/* complain_on_overflow */
805fc799 482 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 483 "R_PPC64_GOT16_HI", /* name */
b34976b6 484 FALSE, /* partial_inplace */
5bd4f169
AM
485 0, /* src_mask */
486 0xffff, /* dst_mask */
b34976b6 487 FALSE), /* pcrel_offset */
5bd4f169
AM
488
489 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
490 the symbol. */
491 HOWTO (R_PPC64_GOT16_HA, /* type */
492 16, /* rightshift */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
494 16, /* bitsize */
b34976b6 495 FALSE, /* pc_relative */
5bd4f169
AM
496 0, /* bitpos */
497 complain_overflow_dont,/* complain_on_overflow */
805fc799 498 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 499 "R_PPC64_GOT16_HA", /* name */
b34976b6 500 FALSE, /* partial_inplace */
5bd4f169
AM
501 0, /* src_mask */
502 0xffff, /* dst_mask */
b34976b6 503 FALSE), /* pcrel_offset */
5bd4f169
AM
504
505 /* This is used only by the dynamic linker. The symbol should exist
506 both in the object being run and in some shared library. The
507 dynamic linker copies the data addressed by the symbol from the
508 shared library into the object, because the object being
509 run has to have the data at some particular address. */
510 HOWTO (R_PPC64_COPY, /* type */
511 0, /* rightshift */
f5e87a1d
AM
512 0, /* this one is variable size */
513 0, /* bitsize */
b34976b6 514 FALSE, /* pc_relative */
5bd4f169 515 0, /* bitpos */
f5e87a1d
AM
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 518 "R_PPC64_COPY", /* name */
b34976b6 519 FALSE, /* partial_inplace */
5bd4f169
AM
520 0, /* src_mask */
521 0, /* dst_mask */
b34976b6 522 FALSE), /* pcrel_offset */
5bd4f169
AM
523
524 /* Like R_PPC64_ADDR64, but used when setting global offset table
525 entries. */
526 HOWTO (R_PPC64_GLOB_DAT, /* type */
527 0, /* rightshift */
528 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
529 64, /* bitsize */
b34976b6 530 FALSE, /* pc_relative */
5bd4f169
AM
531 0, /* bitpos */
532 complain_overflow_dont, /* complain_on_overflow */
805fc799 533 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 534 "R_PPC64_GLOB_DAT", /* name */
b34976b6 535 FALSE, /* partial_inplace */
5bd4f169 536 0, /* src_mask */
f5e87a1d 537 ONES (64), /* dst_mask */
b34976b6 538 FALSE), /* pcrel_offset */
5bd4f169
AM
539
540 /* Created by the link editor. Marks a procedure linkage table
541 entry for a symbol. */
542 HOWTO (R_PPC64_JMP_SLOT, /* type */
543 0, /* rightshift */
544 0, /* size (0 = byte, 1 = short, 2 = long) */
545 0, /* bitsize */
b34976b6 546 FALSE, /* pc_relative */
5bd4f169
AM
547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
805fc799 549 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 550 "R_PPC64_JMP_SLOT", /* name */
b34976b6 551 FALSE, /* partial_inplace */
5bd4f169
AM
552 0, /* src_mask */
553 0, /* dst_mask */
b34976b6 554 FALSE), /* pcrel_offset */
5bd4f169
AM
555
556 /* Used only by the dynamic linker. When the object is run, this
557 doubleword64 is set to the load address of the object, plus the
558 addend. */
559 HOWTO (R_PPC64_RELATIVE, /* type */
560 0, /* rightshift */
561 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
562 64, /* bitsize */
b34976b6 563 FALSE, /* pc_relative */
5bd4f169
AM
564 0, /* bitpos */
565 complain_overflow_dont, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC64_RELATIVE", /* name */
b34976b6 568 FALSE, /* partial_inplace */
5bd4f169 569 0, /* src_mask */
f5e87a1d 570 ONES (64), /* dst_mask */
b34976b6 571 FALSE), /* pcrel_offset */
5bd4f169
AM
572
573 /* Like R_PPC64_ADDR32, but may be unaligned. */
574 HOWTO (R_PPC64_UADDR32, /* type */
575 0, /* rightshift */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
577 32, /* bitsize */
b34976b6 578 FALSE, /* pc_relative */
5bd4f169
AM
579 0, /* bitpos */
580 complain_overflow_bitfield, /* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_PPC64_UADDR32", /* name */
b34976b6 583 FALSE, /* partial_inplace */
5bd4f169
AM
584 0, /* src_mask */
585 0xffffffff, /* dst_mask */
b34976b6 586 FALSE), /* pcrel_offset */
5bd4f169
AM
587
588 /* Like R_PPC64_ADDR16, but may be unaligned. */
589 HOWTO (R_PPC64_UADDR16, /* type */
590 0, /* rightshift */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
592 16, /* bitsize */
b34976b6 593 FALSE, /* pc_relative */
5bd4f169
AM
594 0, /* bitpos */
595 complain_overflow_bitfield, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_UADDR16", /* name */
b34976b6 598 FALSE, /* partial_inplace */
5bd4f169
AM
599 0, /* src_mask */
600 0xffff, /* dst_mask */
b34976b6 601 FALSE), /* pcrel_offset */
5bd4f169
AM
602
603 /* 32-bit PC relative. */
604 HOWTO (R_PPC64_REL32, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
b34976b6 608 TRUE, /* pc_relative */
5bd4f169 609 0, /* bitpos */
cedb70c5 610 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM
611 complain_overflow_signed, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_PPC64_REL32", /* name */
b34976b6 614 FALSE, /* partial_inplace */
5bd4f169
AM
615 0, /* src_mask */
616 0xffffffff, /* dst_mask */
b34976b6 617 TRUE), /* pcrel_offset */
5bd4f169 618
10ed1bba 619 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
620 HOWTO (R_PPC64_PLT32, /* type */
621 0, /* rightshift */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
623 32, /* bitsize */
b34976b6 624 FALSE, /* pc_relative */
5bd4f169
AM
625 0, /* bitpos */
626 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 627 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 628 "R_PPC64_PLT32", /* name */
b34976b6 629 FALSE, /* partial_inplace */
5bd4f169 630 0, /* src_mask */
f5e87a1d 631 0xffffffff, /* dst_mask */
b34976b6 632 FALSE), /* pcrel_offset */
5bd4f169
AM
633
634 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 FIXME: R_PPC64_PLTREL32 not supported. */
636 HOWTO (R_PPC64_PLTREL32, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 32, /* bitsize */
b34976b6 640 TRUE, /* pc_relative */
5bd4f169
AM
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_PPC64_PLTREL32", /* name */
b34976b6 645 FALSE, /* partial_inplace */
5bd4f169 646 0, /* src_mask */
f5e87a1d 647 0xffffffff, /* dst_mask */
b34976b6 648 TRUE), /* pcrel_offset */
5bd4f169
AM
649
650 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
651 the symbol. */
652 HOWTO (R_PPC64_PLT16_LO, /* type */
653 0, /* rightshift */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
655 16, /* bitsize */
b34976b6 656 FALSE, /* pc_relative */
5bd4f169
AM
657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
805fc799 659 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 660 "R_PPC64_PLT16_LO", /* name */
b34976b6 661 FALSE, /* partial_inplace */
5bd4f169
AM
662 0, /* src_mask */
663 0xffff, /* dst_mask */
b34976b6 664 FALSE), /* pcrel_offset */
5bd4f169
AM
665
666 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
667 the symbol. */
668 HOWTO (R_PPC64_PLT16_HI, /* type */
669 16, /* rightshift */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
671 16, /* bitsize */
b34976b6 672 FALSE, /* pc_relative */
5bd4f169
AM
673 0, /* bitpos */
674 complain_overflow_dont, /* complain_on_overflow */
805fc799 675 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 676 "R_PPC64_PLT16_HI", /* name */
b34976b6 677 FALSE, /* partial_inplace */
5bd4f169
AM
678 0, /* src_mask */
679 0xffff, /* dst_mask */
b34976b6 680 FALSE), /* pcrel_offset */
5bd4f169
AM
681
682 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
683 the symbol. */
684 HOWTO (R_PPC64_PLT16_HA, /* type */
685 16, /* rightshift */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
687 16, /* bitsize */
b34976b6 688 FALSE, /* pc_relative */
5bd4f169
AM
689 0, /* bitpos */
690 complain_overflow_dont, /* complain_on_overflow */
805fc799 691 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 692 "R_PPC64_PLT16_HA", /* name */
b34976b6 693 FALSE, /* partial_inplace */
5bd4f169
AM
694 0, /* src_mask */
695 0xffff, /* dst_mask */
b34976b6 696 FALSE), /* pcrel_offset */
5bd4f169 697
c061c2d8 698 /* 16-bit section relative relocation. */
5bd4f169
AM
699 HOWTO (R_PPC64_SECTOFF, /* type */
700 0, /* rightshift */
c061c2d8
AM
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
b34976b6 703 FALSE, /* pc_relative */
5bd4f169
AM
704 0, /* bitpos */
705 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 706 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 707 "R_PPC64_SECTOFF", /* name */
b34976b6 708 FALSE, /* partial_inplace */
5bd4f169 709 0, /* src_mask */
c061c2d8 710 0xffff, /* dst_mask */
b34976b6 711 FALSE), /* pcrel_offset */
5bd4f169 712
c061c2d8 713 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM
714 HOWTO (R_PPC64_SECTOFF_LO, /* type */
715 0, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
b34976b6 718 FALSE, /* pc_relative */
5bd4f169
AM
719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
805fc799 721 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 722 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 723 FALSE, /* partial_inplace */
5bd4f169
AM
724 0, /* src_mask */
725 0xffff, /* dst_mask */
b34976b6 726 FALSE), /* pcrel_offset */
5bd4f169
AM
727
728 /* 16-bit upper half section relative relocation. */
729 HOWTO (R_PPC64_SECTOFF_HI, /* type */
730 16, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
b34976b6 733 FALSE, /* pc_relative */
5bd4f169
AM
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
805fc799 736 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 737 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 738 FALSE, /* partial_inplace */
5bd4f169
AM
739 0, /* src_mask */
740 0xffff, /* dst_mask */
b34976b6 741 FALSE), /* pcrel_offset */
5bd4f169
AM
742
743 /* 16-bit upper half adjusted section relative relocation. */
744 HOWTO (R_PPC64_SECTOFF_HA, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
b34976b6 748 FALSE, /* pc_relative */
5bd4f169
AM
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
805fc799 751 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 752 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 753 FALSE, /* partial_inplace */
5bd4f169
AM
754 0, /* src_mask */
755 0xffff, /* dst_mask */
b34976b6 756 FALSE), /* pcrel_offset */
5bd4f169 757
04c9666a
AM
758 /* Like R_PPC64_REL24 without touching the two least significant bits. */
759 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM
760 2, /* rightshift */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
762 30, /* bitsize */
b34976b6 763 TRUE, /* pc_relative */
5bd4f169
AM
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
04c9666a 767 "R_PPC64_REL30", /* name */
b34976b6 768 FALSE, /* partial_inplace */
d006db6c 769 0, /* src_mask */
5bd4f169 770 0xfffffffc, /* dst_mask */
b34976b6 771 TRUE), /* pcrel_offset */
5bd4f169
AM
772
773 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
774
775 /* A standard 64-bit relocation. */
776 HOWTO (R_PPC64_ADDR64, /* type */
777 0, /* rightshift */
778 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
779 64, /* bitsize */
b34976b6 780 FALSE, /* pc_relative */
5bd4f169
AM
781 0, /* bitpos */
782 complain_overflow_dont, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_PPC64_ADDR64", /* name */
b34976b6 785 FALSE, /* partial_inplace */
5bd4f169 786 0, /* src_mask */
f5e87a1d 787 ONES (64), /* dst_mask */
b34976b6 788 FALSE), /* pcrel_offset */
5bd4f169
AM
789
790 /* The bits 32-47 of an address. */
791 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
792 32, /* rightshift */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
b34976b6 795 FALSE, /* pc_relative */
5bd4f169
AM
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 800 FALSE, /* partial_inplace */
5bd4f169
AM
801 0, /* src_mask */
802 0xffff, /* dst_mask */
b34976b6 803 FALSE), /* pcrel_offset */
5bd4f169
AM
804
805 /* The bits 32-47 of an address, plus 1 if the contents of the low
806 16 bits, treated as a signed number, is negative. */
807 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
808 32, /* rightshift */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
810 16, /* bitsize */
b34976b6 811 FALSE, /* pc_relative */
5bd4f169
AM
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
805fc799 814 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 815 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 816 FALSE, /* partial_inplace */
5bd4f169
AM
817 0, /* src_mask */
818 0xffff, /* dst_mask */
b34976b6 819 FALSE), /* pcrel_offset */
5bd4f169
AM
820
821 /* The bits 48-63 of an address. */
822 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
823 48, /* rightshift */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
825 16, /* bitsize */
b34976b6 826 FALSE, /* pc_relative */
5bd4f169
AM
827 0, /* bitpos */
828 complain_overflow_dont, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 831 FALSE, /* partial_inplace */
5bd4f169
AM
832 0, /* src_mask */
833 0xffff, /* dst_mask */
b34976b6 834 FALSE), /* pcrel_offset */
5bd4f169
AM
835
836 /* The bits 48-63 of an address, plus 1 if the contents of the low
837 16 bits, treated as a signed number, is negative. */
838 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
839 48, /* rightshift */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
841 16, /* bitsize */
b34976b6 842 FALSE, /* pc_relative */
5bd4f169
AM
843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
805fc799 845 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 846 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 847 FALSE, /* partial_inplace */
5bd4f169
AM
848 0, /* src_mask */
849 0xffff, /* dst_mask */
b34976b6 850 FALSE), /* pcrel_offset */
5bd4f169
AM
851
852 /* Like ADDR64, but may be unaligned. */
853 HOWTO (R_PPC64_UADDR64, /* type */
854 0, /* rightshift */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 64, /* bitsize */
b34976b6 857 FALSE, /* pc_relative */
5bd4f169
AM
858 0, /* bitpos */
859 complain_overflow_dont, /* complain_on_overflow */
860 bfd_elf_generic_reloc, /* special_function */
861 "R_PPC64_UADDR64", /* name */
b34976b6 862 FALSE, /* partial_inplace */
5bd4f169 863 0, /* src_mask */
f5e87a1d 864 ONES (64), /* dst_mask */
b34976b6 865 FALSE), /* pcrel_offset */
5bd4f169
AM
866
867 /* 64-bit relative relocation. */
868 HOWTO (R_PPC64_REL64, /* type */
869 0, /* rightshift */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 64, /* bitsize */
b34976b6 872 TRUE, /* pc_relative */
5bd4f169
AM
873 0, /* bitpos */
874 complain_overflow_dont, /* complain_on_overflow */
875 bfd_elf_generic_reloc, /* special_function */
876 "R_PPC64_REL64", /* name */
b34976b6 877 FALSE, /* partial_inplace */
5bd4f169 878 0, /* src_mask */
f5e87a1d 879 ONES (64), /* dst_mask */
b34976b6 880 TRUE), /* pcrel_offset */
5bd4f169 881
cedb70c5 882 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
883 HOWTO (R_PPC64_PLT64, /* type */
884 0, /* rightshift */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
886 64, /* bitsize */
b34976b6 887 FALSE, /* pc_relative */
5bd4f169
AM
888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
805fc799 890 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 891 "R_PPC64_PLT64", /* name */
b34976b6 892 FALSE, /* partial_inplace */
5bd4f169 893 0, /* src_mask */
f5e87a1d 894 ONES (64), /* dst_mask */
b34976b6 895 FALSE), /* pcrel_offset */
5bd4f169
AM
896
897 /* 64-bit PC relative relocation to the symbol's procedure linkage
898 table. */
899 /* FIXME: R_PPC64_PLTREL64 not supported. */
900 HOWTO (R_PPC64_PLTREL64, /* type */
901 0, /* rightshift */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
903 64, /* bitsize */
b34976b6 904 TRUE, /* pc_relative */
5bd4f169
AM
905 0, /* bitpos */
906 complain_overflow_dont, /* complain_on_overflow */
805fc799 907 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 908 "R_PPC64_PLTREL64", /* name */
b34976b6 909 FALSE, /* partial_inplace */
5bd4f169 910 0, /* src_mask */
f5e87a1d 911 ONES (64), /* dst_mask */
b34976b6 912 TRUE), /* pcrel_offset */
5bd4f169
AM
913
914 /* 16 bit TOC-relative relocation. */
915
916 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
917 HOWTO (R_PPC64_TOC16, /* type */
918 0, /* rightshift */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
b34976b6 921 FALSE, /* pc_relative */
5bd4f169
AM
922 0, /* bitpos */
923 complain_overflow_signed, /* complain_on_overflow */
805fc799 924 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 925 "R_PPC64_TOC16", /* name */
b34976b6 926 FALSE, /* partial_inplace */
5bd4f169
AM
927 0, /* src_mask */
928 0xffff, /* dst_mask */
b34976b6 929 FALSE), /* pcrel_offset */
5bd4f169
AM
930
931 /* 16 bit TOC-relative relocation without overflow. */
932
933 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_LO, /* type */
935 0, /* rightshift */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
b34976b6 938 FALSE, /* pc_relative */
5bd4f169
AM
939 0, /* bitpos */
940 complain_overflow_dont, /* complain_on_overflow */
805fc799 941 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 942 "R_PPC64_TOC16_LO", /* name */
b34976b6 943 FALSE, /* partial_inplace */
5bd4f169
AM
944 0, /* src_mask */
945 0xffff, /* dst_mask */
b34976b6 946 FALSE), /* pcrel_offset */
5bd4f169
AM
947
948 /* 16 bit TOC-relative relocation, high 16 bits. */
949
950 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
951 HOWTO (R_PPC64_TOC16_HI, /* type */
952 16, /* rightshift */
953 1, /* size (0 = byte, 1 = short, 2 = long) */
954 16, /* bitsize */
b34976b6 955 FALSE, /* pc_relative */
5bd4f169
AM
956 0, /* bitpos */
957 complain_overflow_dont, /* complain_on_overflow */
805fc799 958 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 959 "R_PPC64_TOC16_HI", /* name */
b34976b6 960 FALSE, /* partial_inplace */
5bd4f169
AM
961 0, /* src_mask */
962 0xffff, /* dst_mask */
b34976b6 963 FALSE), /* pcrel_offset */
5bd4f169
AM
964
965 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
966 contents of the low 16 bits, treated as a signed number, is
967 negative. */
968
969 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
970 HOWTO (R_PPC64_TOC16_HA, /* type */
971 16, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
b34976b6 974 FALSE, /* pc_relative */
5bd4f169
AM
975 0, /* bitpos */
976 complain_overflow_dont, /* complain_on_overflow */
805fc799 977 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 978 "R_PPC64_TOC16_HA", /* name */
b34976b6 979 FALSE, /* partial_inplace */
5bd4f169
AM
980 0, /* src_mask */
981 0xffff, /* dst_mask */
b34976b6 982 FALSE), /* pcrel_offset */
5bd4f169
AM
983
984 /* 64-bit relocation; insert value of TOC base (.TOC.). */
985
986 /* R_PPC64_TOC 51 doubleword64 .TOC. */
987 HOWTO (R_PPC64_TOC, /* type */
988 0, /* rightshift */
989 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
990 64, /* bitsize */
b34976b6 991 FALSE, /* pc_relative */
5bd4f169
AM
992 0, /* bitpos */
993 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 994 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 995 "R_PPC64_TOC", /* name */
b34976b6 996 FALSE, /* partial_inplace */
5bd4f169 997 0, /* src_mask */
f5e87a1d 998 ONES (64), /* dst_mask */
b34976b6 999 FALSE), /* pcrel_offset */
5bd4f169
AM
1000
1001 /* Like R_PPC64_GOT16, but also informs the link editor that the
1002 value to relocate may (!) refer to a PLT entry which the link
1003 editor (a) may replace with the symbol value. If the link editor
1004 is unable to fully resolve the symbol, it may (b) create a PLT
1005 entry and store the address to the new PLT entry in the GOT.
1006 This permits lazy resolution of function symbols at run time.
1007 The link editor may also skip all of this and just (c) emit a
1008 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1009 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16, /* type */
1011 0, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 16, /* bitsize */
b34976b6 1014 FALSE, /* pc_relative */
5bd4f169
AM
1015 0, /* bitpos */
1016 complain_overflow_signed, /* complain_on_overflow */
805fc799 1017 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM
1018 "R_PPC64_PLTGOT16", /* name */
1019 FALSE, /* partial_inplace */
1020 0, /* src_mask */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1023
1024 /* Like R_PPC64_PLTGOT16, but without overflow. */
1025 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1027 0, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_LO", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1041 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1042 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 16, /* bitsize */
1046 FALSE, /* pc_relative */
1047 0, /* bitpos */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc64_elf_unhandled_reloc, /* special_function */
1050 "R_PPC64_PLTGOT16_HI", /* name */
1051 FALSE, /* partial_inplace */
1052 0, /* src_mask */
1053 0xffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1055
1056 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1057 1 if the contents of the low 16 bits, treated as a signed number,
1058 is negative. */
1059 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1060 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1061 16, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 0, /* bitpos */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 ppc64_elf_unhandled_reloc, /* special_function */
1068 "R_PPC64_PLTGOT16_HA", /* name */
1069 FALSE, /* partial_inplace */
1070 0, /* src_mask */
1071 0xffff, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073
1074 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_ADDR16_DS, /* type */
1076 0, /* rightshift */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_bitfield, /* complain_on_overflow */
1082 bfd_elf_generic_reloc, /* special_function */
1083 "R_PPC64_ADDR16_DS", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0xfffc, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1088
1089 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1091 0, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 16, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont,/* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
1098 "R_PPC64_ADDR16_LO_DS",/* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 0xfffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1103
1104 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_GOT16_DS, /* type */
1106 0, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 FALSE, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_signed, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc, /* special_function */
1113 "R_PPC64_GOT16_DS", /* name */
1114 FALSE, /* partial_inplace */
1115 0, /* src_mask */
1116 0xfffc, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1118
1119 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1121 0, /* rightshift */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 16, /* bitsize */
1124 FALSE, /* pc_relative */
1125 0, /* bitpos */
1126 complain_overflow_dont, /* complain_on_overflow */
1127 ppc64_elf_unhandled_reloc, /* special_function */
1128 "R_PPC64_GOT16_LO_DS", /* name */
1129 FALSE, /* partial_inplace */
1130 0, /* src_mask */
1131 0xfffc, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1133
1134 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1136 0, /* rightshift */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 16, /* bitsize */
1139 FALSE, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc64_elf_unhandled_reloc, /* special_function */
1143 "R_PPC64_PLT16_LO_DS", /* name */
1144 FALSE, /* partial_inplace */
1145 0, /* src_mask */
1146 0xfffc, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1148
1149 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1151 0, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 FALSE, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_bitfield, /* complain_on_overflow */
1157 ppc64_elf_sectoff_reloc, /* special_function */
1158 "R_PPC64_SECTOFF_DS", /* name */
1159 FALSE, /* partial_inplace */
1160 0, /* src_mask */
1161 0xfffc, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1163
1164 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1166 0, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc64_elf_sectoff_reloc, /* special_function */
1173 "R_PPC64_SECTOFF_LO_DS",/* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0xfffc, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1180 HOWTO (R_PPC64_TOC16_DS, /* type */
1181 0, /* rightshift */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 16, /* bitsize */
1184 FALSE, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_signed, /* complain_on_overflow */
1187 ppc64_elf_toc_reloc, /* special_function */
1188 "R_PPC64_TOC16_DS", /* name */
1189 FALSE, /* partial_inplace */
1190 0, /* src_mask */
1191 0xfffc, /* dst_mask */
1192 FALSE), /* pcrel_offset */
1193
1194 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1195 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1196 0, /* rightshift */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 16, /* bitsize */
1199 FALSE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc64_elf_toc_reloc, /* special_function */
1203 "R_PPC64_TOC16_LO_DS", /* name */
1204 FALSE, /* partial_inplace */
1205 0, /* src_mask */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1208
1209 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1211 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM
1212 0, /* rightshift */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 16, /* bitsize */
1215 FALSE, /* pc_relative */
1216 0, /* bitpos */
1217 complain_overflow_signed, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_DS", /* name */
1220 FALSE, /* partial_inplace */
1221 0, /* src_mask */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1224
1225 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1226 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1227 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1228 0, /* rightshift */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1230 16, /* bitsize */
1231 FALSE, /* pc_relative */
1232 0, /* bitpos */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 ppc64_elf_unhandled_reloc, /* special_function */
1235 "R_PPC64_PLTGOT16_LO_DS",/* name */
1236 FALSE, /* partial_inplace */
1237 0, /* src_mask */
1238 0xfffc, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1240
727fc41e 1241 /* Marker relocs for TLS. */
411e1bfb
AM
1242 HOWTO (R_PPC64_TLS,
1243 0, /* rightshift */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1245 32, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 bfd_elf_generic_reloc, /* special_function */
1250 "R_PPC64_TLS", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 0, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
727fc41e
AM
1256 HOWTO (R_PPC64_TLSGD,
1257 0, /* rightshift */
1258 2, /* size (0 = byte, 1 = short, 2 = long) */
1259 32, /* bitsize */
1260 FALSE, /* pc_relative */
1261 0, /* bitpos */
1262 complain_overflow_dont, /* complain_on_overflow */
1263 bfd_elf_generic_reloc, /* special_function */
1264 "R_PPC64_TLSGD", /* name */
1265 FALSE, /* partial_inplace */
1266 0, /* src_mask */
1267 0, /* dst_mask */
1268 FALSE), /* pcrel_offset */
1269
1270 HOWTO (R_PPC64_TLSLD,
1271 0, /* rightshift */
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 32, /* bitsize */
1274 FALSE, /* pc_relative */
1275 0, /* bitpos */
1276 complain_overflow_dont, /* complain_on_overflow */
1277 bfd_elf_generic_reloc, /* special_function */
1278 "R_PPC64_TLSLD", /* name */
1279 FALSE, /* partial_inplace */
1280 0, /* src_mask */
1281 0, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1283
411e1bfb
AM
1284 /* Computes the load module index of the load module that contains the
1285 definition of its TLS sym. */
1286 HOWTO (R_PPC64_DTPMOD64,
1287 0, /* rightshift */
1288 4, /* size (0 = byte, 1 = short, 2 = long) */
1289 64, /* bitsize */
1290 FALSE, /* pc_relative */
1291 0, /* bitpos */
1292 complain_overflow_dont, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc, /* special_function */
1294 "R_PPC64_DTPMOD64", /* name */
1295 FALSE, /* partial_inplace */
1296 0, /* src_mask */
1297 ONES (64), /* dst_mask */
1298 FALSE), /* pcrel_offset */
1299
1300 /* Computes a dtv-relative displacement, the difference between the value
1301 of sym+add and the base address of the thread-local storage block that
1302 contains the definition of sym, minus 0x8000. */
1303 HOWTO (R_PPC64_DTPREL64,
1304 0, /* rightshift */
1305 4, /* size (0 = byte, 1 = short, 2 = long) */
1306 64, /* bitsize */
1307 FALSE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL64", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 ONES (64), /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 /* A 16 bit dtprel reloc. */
1318 HOWTO (R_PPC64_DTPREL16,
1319 0, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 16, /* bitsize */
1322 FALSE, /* pc_relative */
1323 0, /* bitpos */
1324 complain_overflow_signed, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1331
1332 /* Like DTPREL16, but no overflow. */
1333 HOWTO (R_PPC64_DTPREL16_LO,
1334 0, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_LO", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HI,
1349 16, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HI", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HA,
1364 16, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HA", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHER,
1379 32, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHER", /* name */
1387 FALSE, /* partial_inplace */
1388 0, /* src_mask */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1394 32, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_dont, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_HIGHERA", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1409 48, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 16, /* bitsize */
1412 FALSE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_HIGHEST", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xffff, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1421
1422 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1424 48, /* rightshift */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1426 16, /* bitsize */
1427 FALSE, /* pc_relative */
1428 0, /* bitpos */
1429 complain_overflow_dont, /* complain_on_overflow */
1430 ppc64_elf_unhandled_reloc, /* special_function */
1431 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1432 FALSE, /* partial_inplace */
1433 0, /* src_mask */
1434 0xffff, /* dst_mask */
1435 FALSE), /* pcrel_offset */
1436
1437 /* Like DTPREL16, but for insns with a DS field. */
1438 HOWTO (R_PPC64_DTPREL16_DS,
1439 0, /* rightshift */
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1441 16, /* bitsize */
1442 FALSE, /* pc_relative */
1443 0, /* bitpos */
1444 complain_overflow_signed, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc, /* special_function */
1446 "R_PPC64_DTPREL16_DS", /* name */
1447 FALSE, /* partial_inplace */
1448 0, /* src_mask */
1449 0xfffc, /* dst_mask */
1450 FALSE), /* pcrel_offset */
1451
1452 /* Like DTPREL16_DS, but no overflow. */
1453 HOWTO (R_PPC64_DTPREL16_LO_DS,
1454 0, /* rightshift */
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1456 16, /* bitsize */
1457 FALSE, /* pc_relative */
1458 0, /* bitpos */
1459 complain_overflow_dont, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc, /* special_function */
1461 "R_PPC64_DTPREL16_LO_DS", /* name */
1462 FALSE, /* partial_inplace */
1463 0, /* src_mask */
1464 0xfffc, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1466
1467 /* Computes a tp-relative displacement, the difference between the value of
1468 sym+add and the value of the thread pointer (r13). */
1469 HOWTO (R_PPC64_TPREL64,
1470 0, /* rightshift */
1471 4, /* size (0 = byte, 1 = short, 2 = long) */
1472 64, /* bitsize */
1473 FALSE, /* pc_relative */
1474 0, /* bitpos */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL64", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 ONES (64), /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* A 16 bit tprel reloc. */
1484 HOWTO (R_PPC64_TPREL16,
1485 0, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 16, /* bitsize */
1488 FALSE, /* pc_relative */
1489 0, /* bitpos */
1490 complain_overflow_signed, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like TPREL16, but no overflow. */
1499 HOWTO (R_PPC64_TPREL16_LO,
1500 0, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 16, /* bitsize */
1503 FALSE, /* pc_relative */
1504 0, /* bitpos */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_LO", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like TPREL16_LO, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HI,
1515 16, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 16, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HI", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Like TPREL16_HI, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HA,
1530 16, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1532 16, /* bitsize */
1533 FALSE, /* pc_relative */
1534 0, /* bitpos */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HA", /* name */
1538 FALSE, /* partial_inplace */
1539 0, /* src_mask */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1542
1543 /* Like TPREL16_HI, but next higher group of 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHER,
1545 32, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHER", /* name */
1553 FALSE, /* partial_inplace */
1554 0, /* src_mask */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHERA,
1560 32, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1562 16, /* bitsize */
1563 FALSE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_HIGHERA", /* name */
1568 FALSE, /* partial_inplace */
1569 0, /* src_mask */
1570 0xffff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572
1573 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHEST,
1575 48, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1577 16, /* bitsize */
1578 FALSE, /* pc_relative */
1579 0, /* bitpos */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_HIGHEST", /* name */
1583 FALSE, /* partial_inplace */
1584 0, /* src_mask */
1585 0xffff, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1587
1588 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1590 48, /* rightshift */
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1592 16, /* bitsize */
1593 FALSE, /* pc_relative */
1594 0, /* bitpos */
1595 complain_overflow_dont, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc, /* special_function */
1597 "R_PPC64_TPREL16_HIGHESTA", /* name */
1598 FALSE, /* partial_inplace */
1599 0, /* src_mask */
1600 0xffff, /* dst_mask */
1601 FALSE), /* pcrel_offset */
1602
1603 /* Like TPREL16, but for insns with a DS field. */
1604 HOWTO (R_PPC64_TPREL16_DS,
1605 0, /* rightshift */
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1607 16, /* bitsize */
1608 FALSE, /* pc_relative */
1609 0, /* bitpos */
1610 complain_overflow_signed, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc, /* special_function */
1612 "R_PPC64_TPREL16_DS", /* name */
1613 FALSE, /* partial_inplace */
1614 0, /* src_mask */
1615 0xfffc, /* dst_mask */
1616 FALSE), /* pcrel_offset */
1617
1618 /* Like TPREL16_DS, but no overflow. */
1619 HOWTO (R_PPC64_TPREL16_LO_DS,
1620 0, /* rightshift */
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1622 16, /* bitsize */
1623 FALSE, /* pc_relative */
1624 0, /* bitpos */
1625 complain_overflow_dont, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc, /* special_function */
1627 "R_PPC64_TPREL16_LO_DS", /* name */
1628 FALSE, /* partial_inplace */
1629 0, /* src_mask */
1630 0xfffc, /* dst_mask */
1631 FALSE), /* pcrel_offset */
1632
1633 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1634 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1635 to the first entry relative to the TOC base (r2). */
1636 HOWTO (R_PPC64_GOT_TLSGD16,
1637 0, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 16, /* bitsize */
1640 FALSE, /* pc_relative */
1641 0, /* bitpos */
1642 complain_overflow_signed, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1645 FALSE, /* partial_inplace */
5bd4f169
AM
1646 0, /* src_mask */
1647 0xffff, /* dst_mask */
b34976b6 1648 FALSE), /* pcrel_offset */
5bd4f169 1649
411e1bfb
AM
1650 /* Like GOT_TLSGD16, but no overflow. */
1651 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM
1652 0, /* rightshift */
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1654 16, /* bitsize */
b34976b6 1655 FALSE, /* pc_relative */
5bd4f169
AM
1656 0, /* bitpos */
1657 complain_overflow_dont, /* complain_on_overflow */
805fc799 1658 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1659 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1660 FALSE, /* partial_inplace */
5bd4f169
AM
1661 0, /* src_mask */
1662 0xffff, /* dst_mask */
b34976b6 1663 FALSE), /* pcrel_offset */
5bd4f169 1664
411e1bfb
AM
1665 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM
1667 16, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 16, /* bitsize */
b34976b6 1670 FALSE, /* pc_relative */
5bd4f169
AM
1671 0, /* bitpos */
1672 complain_overflow_dont, /* complain_on_overflow */
805fc799 1673 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1674 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1675 FALSE, /* partial_inplace */
5bd4f169
AM
1676 0, /* src_mask */
1677 0xffff, /* dst_mask */
b34976b6 1678 FALSE), /* pcrel_offset */
5bd4f169 1679
411e1bfb
AM
1680 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 16, /* bitsize */
b34976b6 1685 FALSE, /* pc_relative */
5bd4f169 1686 0, /* bitpos */
411e1bfb 1687 complain_overflow_dont, /* complain_on_overflow */
805fc799 1688 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1689 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1690 FALSE, /* partial_inplace */
5bd4f169
AM
1691 0, /* src_mask */
1692 0xffff, /* dst_mask */
b34976b6 1693 FALSE), /* pcrel_offset */
5bd4f169 1694
411e1bfb
AM
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and zero, and computes the offset to the
1697 first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM
1699 0, /* rightshift */
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 16, /* bitsize */
b34976b6 1702 FALSE, /* pc_relative */
5bd4f169 1703 0, /* bitpos */
411e1bfb
AM
1704 complain_overflow_signed, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1707 FALSE, /* partial_inplace */
d006db6c 1708 0, /* src_mask */
411e1bfb 1709 0xffff, /* dst_mask */
b34976b6 1710 FALSE), /* pcrel_offset */
5bd4f169 1711
411e1bfb
AM
1712 /* Like GOT_TLSLD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM
1714 0, /* rightshift */
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 16, /* bitsize */
b34976b6 1717 FALSE, /* pc_relative */
5bd4f169 1718 0, /* bitpos */
411e1bfb
AM
1719 complain_overflow_dont, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc, /* special_function */
1721 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1722 FALSE, /* partial_inplace */
d006db6c 1723 0, /* src_mask */
411e1bfb 1724 0xffff, /* dst_mask */
b34976b6 1725 FALSE), /* pcrel_offset */
5bd4f169 1726
411e1bfb
AM
1727 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1729 16, /* rightshift */
5bd4f169
AM
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 16, /* bitsize */
b34976b6 1732 FALSE, /* pc_relative */
5bd4f169 1733 0, /* bitpos */
411e1bfb 1734 complain_overflow_dont, /* complain_on_overflow */
805fc799 1735 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1736 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1737 FALSE, /* partial_inplace */
d006db6c 1738 0, /* src_mask */
411e1bfb 1739 0xffff, /* dst_mask */
b34976b6 1740 FALSE), /* pcrel_offset */
5bd4f169 1741
411e1bfb
AM
1742 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1744 16, /* rightshift */
5bd4f169
AM
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 16, /* bitsize */
b34976b6 1747 FALSE, /* pc_relative */
5bd4f169
AM
1748 0, /* bitpos */
1749 complain_overflow_dont, /* complain_on_overflow */
805fc799 1750 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1751 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1752 FALSE, /* partial_inplace */
d006db6c 1753 0, /* src_mask */
411e1bfb 1754 0xffff, /* dst_mask */
b34976b6 1755 FALSE), /* pcrel_offset */
5bd4f169 1756
411e1bfb
AM
1757 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1758 the offset to the entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM
1760 0, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 16, /* bitsize */
b34976b6 1763 FALSE, /* pc_relative */
5bd4f169 1764 0, /* bitpos */
411e1bfb 1765 complain_overflow_signed, /* complain_on_overflow */
805fc799 1766 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1767 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1768 FALSE, /* partial_inplace */
d006db6c 1769 0, /* src_mask */
5bd4f169 1770 0xfffc, /* dst_mask */
b34976b6 1771 FALSE), /* pcrel_offset */
5bd4f169 1772
411e1bfb
AM
1773 /* Like GOT_DTPREL16_DS, but no overflow. */
1774 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1775 0, /* rightshift */
c061c2d8
AM
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1777 16, /* bitsize */
b34976b6 1778 FALSE, /* pc_relative */
5bd4f169 1779 0, /* bitpos */
411e1bfb
AM
1780 complain_overflow_dont, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1783 FALSE, /* partial_inplace */
d006db6c 1784 0, /* src_mask */
c061c2d8 1785 0xfffc, /* dst_mask */
b34976b6 1786 FALSE), /* pcrel_offset */
5bd4f169 1787
411e1bfb
AM
1788 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1790 16, /* rightshift */
5bd4f169
AM
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1792 16, /* bitsize */
b34976b6 1793 FALSE, /* pc_relative */
5bd4f169
AM
1794 0, /* bitpos */
1795 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1798 FALSE, /* partial_inplace */
d006db6c 1799 0, /* src_mask */
411e1bfb 1800 0xffff, /* dst_mask */
b34976b6 1801 FALSE), /* pcrel_offset */
5bd4f169 1802
411e1bfb
AM
1803 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1807 16, /* bitsize */
1808 FALSE, /* pc_relative */
1809 0, /* bitpos */
1810 complain_overflow_dont, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_DTPREL16_HA", /* name */
1813 FALSE, /* partial_inplace */
1814 0, /* src_mask */
1815 0xffff, /* dst_mask */
1816 FALSE), /* pcrel_offset */
1817
1818 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1819 offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM
1821 0, /* rightshift */
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 16, /* bitsize */
b34976b6 1824 FALSE, /* pc_relative */
5bd4f169
AM
1825 0, /* bitpos */
1826 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1829 FALSE, /* partial_inplace */
d006db6c 1830 0, /* src_mask */
ad8e1ba5 1831 0xfffc, /* dst_mask */
b34976b6 1832 FALSE), /* pcrel_offset */
5bd4f169 1833
411e1bfb
AM
1834 /* Like GOT_TPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM
1836 0, /* rightshift */
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1838 16, /* bitsize */
b34976b6 1839 FALSE, /* pc_relative */
5bd4f169
AM
1840 0, /* bitpos */
1841 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1842 ppc64_elf_unhandled_reloc, /* special_function */
1843 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1844 FALSE, /* partial_inplace */
d006db6c 1845 0, /* src_mask */
ad8e1ba5 1846 0xfffc, /* dst_mask */
b34976b6 1847 FALSE), /* pcrel_offset */
5bd4f169 1848
411e1bfb
AM
1849 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_TPREL16_HI,
1851 16, /* rightshift */
5bd4f169
AM
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1853 16, /* bitsize */
b34976b6 1854 FALSE, /* pc_relative */
5bd4f169 1855 0, /* bitpos */
411e1bfb 1856 complain_overflow_dont, /* complain_on_overflow */
805fc799 1857 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1858 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1859 FALSE, /* partial_inplace */
d006db6c 1860 0, /* src_mask */
411e1bfb 1861 0xffff, /* dst_mask */
b34976b6 1862 FALSE), /* pcrel_offset */
5bd4f169 1863
411e1bfb
AM
1864 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HA,
1866 16, /* rightshift */
5bd4f169
AM
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1868 16, /* bitsize */
b34976b6 1869 FALSE, /* pc_relative */
5bd4f169
AM
1870 0, /* bitpos */
1871 complain_overflow_dont, /* complain_on_overflow */
805fc799 1872 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1873 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1874 FALSE, /* partial_inplace */
d006db6c 1875 0, /* src_mask */
411e1bfb 1876 0xffff, /* dst_mask */
b34976b6 1877 FALSE), /* pcrel_offset */
5bd4f169 1878
25f23106
AM
1879 HOWTO (R_PPC64_JMP_IREL, /* type */
1880 0, /* rightshift */
1881 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1882 0, /* bitsize */
1883 FALSE, /* pc_relative */
1884 0, /* bitpos */
1885 complain_overflow_dont, /* complain_on_overflow */
1886 ppc64_elf_unhandled_reloc, /* special_function */
1887 "R_PPC64_JMP_IREL", /* name */
1888 FALSE, /* partial_inplace */
1889 0, /* src_mask */
1890 0, /* dst_mask */
1891 FALSE), /* pcrel_offset */
1892
e054468f
AM
1893 HOWTO (R_PPC64_IRELATIVE, /* type */
1894 0, /* rightshift */
1895 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1896 64, /* bitsize */
1897 FALSE, /* pc_relative */
1898 0, /* bitpos */
1899 complain_overflow_dont, /* complain_on_overflow */
1900 bfd_elf_generic_reloc, /* special_function */
1901 "R_PPC64_IRELATIVE", /* name */
1902 FALSE, /* partial_inplace */
1903 0, /* src_mask */
1904 ONES (64), /* dst_mask */
1905 FALSE), /* pcrel_offset */
1906
25f23106
AM
1907 /* A 16 bit relative relocation. */
1908 HOWTO (R_PPC64_REL16, /* type */
1909 0, /* rightshift */
1910 1, /* size (0 = byte, 1 = short, 2 = long) */
1911 16, /* bitsize */
1912 TRUE, /* pc_relative */
1913 0, /* bitpos */
1914 complain_overflow_bitfield, /* complain_on_overflow */
1915 bfd_elf_generic_reloc, /* special_function */
1916 "R_PPC64_REL16", /* name */
1917 FALSE, /* partial_inplace */
1918 0, /* src_mask */
1919 0xffff, /* dst_mask */
1920 TRUE), /* pcrel_offset */
1921
1922 /* A 16 bit relative relocation without overflow. */
1923 HOWTO (R_PPC64_REL16_LO, /* type */
1924 0, /* rightshift */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1926 16, /* bitsize */
1927 TRUE, /* pc_relative */
1928 0, /* bitpos */
1929 complain_overflow_dont,/* complain_on_overflow */
1930 bfd_elf_generic_reloc, /* special_function */
1931 "R_PPC64_REL16_LO", /* name */
1932 FALSE, /* partial_inplace */
1933 0, /* src_mask */
1934 0xffff, /* dst_mask */
1935 TRUE), /* pcrel_offset */
1936
1937 /* The high order 16 bits of a relative address. */
1938 HOWTO (R_PPC64_REL16_HI, /* type */
1939 16, /* rightshift */
1940 1, /* size (0 = byte, 1 = short, 2 = long) */
1941 16, /* bitsize */
1942 TRUE, /* pc_relative */
1943 0, /* bitpos */
1944 complain_overflow_dont, /* complain_on_overflow */
1945 bfd_elf_generic_reloc, /* special_function */
1946 "R_PPC64_REL16_HI", /* name */
1947 FALSE, /* partial_inplace */
1948 0, /* src_mask */
1949 0xffff, /* dst_mask */
1950 TRUE), /* pcrel_offset */
1951
1952 /* The high order 16 bits of a relative address, plus 1 if the contents of
1953 the low 16 bits, treated as a signed number, is negative. */
1954 HOWTO (R_PPC64_REL16_HA, /* type */
1955 16, /* rightshift */
1956 1, /* size (0 = byte, 1 = short, 2 = long) */
1957 16, /* bitsize */
1958 TRUE, /* pc_relative */
1959 0, /* bitpos */
1960 complain_overflow_dont, /* complain_on_overflow */
1961 ppc64_elf_ha_reloc, /* special_function */
1962 "R_PPC64_REL16_HA", /* name */
1963 FALSE, /* partial_inplace */
1964 0, /* src_mask */
1965 0xffff, /* dst_mask */
1966 TRUE), /* pcrel_offset */
1967
5bd4f169
AM
1968 /* GNU extension to record C++ vtable hierarchy. */
1969 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1970 0, /* rightshift */
1971 0, /* size (0 = byte, 1 = short, 2 = long) */
1972 0, /* bitsize */
b34976b6 1973 FALSE, /* pc_relative */
5bd4f169
AM
1974 0, /* bitpos */
1975 complain_overflow_dont, /* complain_on_overflow */
1976 NULL, /* special_function */
1977 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1978 FALSE, /* partial_inplace */
5bd4f169
AM
1979 0, /* src_mask */
1980 0, /* dst_mask */
b34976b6 1981 FALSE), /* pcrel_offset */
5bd4f169
AM
1982
1983 /* GNU extension to record C++ vtable member usage. */
1984 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1985 0, /* rightshift */
1986 0, /* size (0 = byte, 1 = short, 2 = long) */
1987 0, /* bitsize */
b34976b6 1988 FALSE, /* pc_relative */
5bd4f169
AM
1989 0, /* bitpos */
1990 complain_overflow_dont, /* complain_on_overflow */
1991 NULL, /* special_function */
1992 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1993 FALSE, /* partial_inplace */
5bd4f169
AM
1994 0, /* src_mask */
1995 0, /* dst_mask */
b34976b6 1996 FALSE), /* pcrel_offset */
5bd4f169
AM
1997};
1998
1999\f
2000/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2001 be done. */
2002
2003static void
4ce794b7 2004ppc_howto_init (void)
5bd4f169
AM
2005{
2006 unsigned int i, type;
2007
2008 for (i = 0;
2009 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2010 i++)
2011 {
2012 type = ppc64_elf_howto_raw[i].type;
2013 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2014 / sizeof (ppc64_elf_howto_table[0])));
2015 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2016 }
2017}
2018
2019static reloc_howto_type *
4ce794b7
AM
2020ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2021 bfd_reloc_code_real_type code)
5bd4f169 2022{
411e1bfb 2023 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM
2024
2025 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2026 /* Initialize howto table if needed. */
2027 ppc_howto_init ();
2028
4ce794b7 2029 switch (code)
5bd4f169
AM
2030 {
2031 default:
4ce794b7 2032 return NULL;
5bd4f169 2033
411e1bfb
AM
2034 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2035 break;
2036 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2037 break;
2038 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2039 break;
2040 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2041 break;
2042 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2043 break;
2044 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2045 break;
2046 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2047 break;
411e1bfb 2048 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2049 break;
411e1bfb 2050 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2051 break;
411e1bfb 2052 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2053 break;
411e1bfb 2054 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2055 break;
411e1bfb 2056 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2057 break;
411e1bfb 2058 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2059 break;
411e1bfb 2060 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2061 break;
411e1bfb 2062 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2063 break;
411e1bfb 2064 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2065 break;
411e1bfb 2066 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2067 break;
411e1bfb 2068 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2069 break;
411e1bfb 2070 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2071 break;
411e1bfb 2072 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2073 break;
411e1bfb 2074 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2075 break;
411e1bfb 2076 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2077 break;
411e1bfb 2078 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2079 break;
411e1bfb 2080 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2081 break;
411e1bfb 2082 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2083 break;
411e1bfb 2084 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2085 break;
411e1bfb 2086 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2087 break;
411e1bfb 2088 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2089 break;
411e1bfb 2090 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2091 break;
411e1bfb 2092 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2093 break;
411e1bfb 2094 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2095 break;
411e1bfb 2096 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2097 break;
411e1bfb 2098 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2099 break;
411e1bfb 2100 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2101 break;
411e1bfb 2102 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2103 break;
411e1bfb 2104 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2105 break;
411e1bfb 2106 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2107 break;
411e1bfb 2108 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2109 break;
411e1bfb 2110 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2111 break;
411e1bfb 2112 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2113 break;
411e1bfb 2114 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2115 break;
411e1bfb 2116 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2117 break;
411e1bfb 2118 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2119 break;
411e1bfb 2120 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2121 break;
411e1bfb 2122 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2123 break;
411e1bfb 2124 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2125 break;
411e1bfb 2126 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2127 break;
411e1bfb 2128 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2129 break;
411e1bfb 2130 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2131 break;
411e1bfb 2132 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2133 break;
411e1bfb 2134 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2135 break;
411e1bfb 2136 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2137 break;
411e1bfb 2138 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2139 break;
411e1bfb 2140 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2141 break;
411e1bfb 2142 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2143 break;
411e1bfb 2144 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2145 break;
411e1bfb 2146 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2147 break;
411e1bfb 2148 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2149 break;
411e1bfb 2150 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2151 break;
411e1bfb 2152 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2153 break;
727fc41e
AM
2154 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2155 break;
2156 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2157 break;
411e1bfb 2158 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2159 break;
411e1bfb 2160 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2161 break;
411e1bfb 2162 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2163 break;
411e1bfb 2164 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2165 break;
411e1bfb 2166 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2167 break;
411e1bfb 2168 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2169 break;
411e1bfb
AM
2170 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2171 break;
2172 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2173 break;
2174 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2175 break;
2176 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2177 break;
2178 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2179 break;
2180 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2181 break;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2183 break;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2185 break;
2186 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2187 break;
2188 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2189 break;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2191 break;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2193 break;
2194 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2195 break;
2196 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2197 break;
2198 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2199 break;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2201 break;
2202 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2203 break;
2204 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2205 break;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2207 break;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2209 break;
2210 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2211 break;
2212 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2213 break;
2214 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2215 break;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2217 break;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2219 break;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2221 break;
2222 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2223 break;
2224 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2225 break;
2226 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2227 break;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2229 break;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2231 break;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2233 break;
2234 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2235 break;
25f23106
AM
2236 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2237 break;
2238 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2239 break;
2240 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2241 break;
2242 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2243 break;
411e1bfb
AM
2244 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2245 break;
2246 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM
2247 break;
2248 }
2249
4ce794b7 2250 return ppc64_elf_howto_table[r];
5bd4f169
AM
2251};
2252
157090f7
AM
2253static reloc_howto_type *
2254ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2255 const char *r_name)
2256{
2257 unsigned int i;
2258
2259 for (i = 0;
2260 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2261 i++)
2262 if (ppc64_elf_howto_raw[i].name != NULL
2263 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2264 return &ppc64_elf_howto_raw[i];
2265
2266 return NULL;
2267}
2268
5bd4f169
AM
2269/* Set the howto pointer for a PowerPC ELF reloc. */
2270
2271static void
4ce794b7
AM
2272ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2273 Elf_Internal_Rela *dst)
5bd4f169 2274{
65f38f15
AM
2275 unsigned int type;
2276
ef60b7ff 2277 /* Initialize howto table if needed. */
5bd4f169 2278 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
2279 ppc_howto_init ();
2280
65f38f15 2281 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ
2282 if (type >= (sizeof (ppc64_elf_howto_table)
2283 / sizeof (ppc64_elf_howto_table[0])))
2284 {
2285 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC
2286 abfd, (int) type);
2287 type = R_PPC64_NONE;
d0fb9a8d 2288 }
65f38f15 2289 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM
2290}
2291
04c9666a 2292/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM
2293
2294static bfd_reloc_status_type
4ce794b7
AM
2295ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2296 void *data, asection *input_section,
2297 bfd *output_bfd, char **error_message)
5bd4f169 2298{
805fc799
AM
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2301 link time. */
2302 if (output_bfd != NULL)
cedb70c5 2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2304 input_section, output_bfd, error_message);
2305
2306 /* Adjust the addend for sign extension of the low 16 bits.
2307 We won't actually be using the low 16 bits, so trashing them
2308 doesn't matter. */
2309 reloc_entry->addend += 0x8000;
2310 return bfd_reloc_continue;
2311}
5bd4f169 2312
2441e016
AM
2313static bfd_reloc_status_type
2314ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2315 void *data, asection *input_section,
2316 bfd *output_bfd, char **error_message)
2317{
2318 if (output_bfd != NULL)
2319 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2320 input_section, output_bfd, error_message);
2321
699733f6
AM
2322 if (strcmp (symbol->section->name, ".opd") == 0
2323 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM
2324 {
2325 bfd_vma dest = opd_entry_value (symbol->section,
2326 symbol->value + reloc_entry->addend,
2327 NULL, NULL);
2328 if (dest != (bfd_vma) -1)
2329 reloc_entry->addend = dest - (symbol->value
2330 + symbol->section->output_section->vma
2331 + symbol->section->output_offset);
2332 }
2333 return bfd_reloc_continue;
2334}
2335
805fc799 2336static bfd_reloc_status_type
4ce794b7
AM
2337ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
805fc799
AM
2340{
2341 long insn;
04c9666a 2342 enum elf_ppc64_reloc_type r_type;
805fc799
AM
2343 bfd_size_type octets;
2344 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2345 bfd_boolean is_power4 = FALSE;
805fc799
AM
2346
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2349 link time. */
5bd4f169 2350 if (output_bfd != NULL)
cedb70c5 2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2352 input_section, output_bfd, error_message);
2353
2354 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2355 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2356 insn &= ~(0x01 << 21);
4ce794b7 2357 r_type = reloc_entry->howto->type;
805fc799
AM
2358 if (r_type == R_PPC64_ADDR14_BRTAKEN
2359 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2360 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM
2361
2362 if (is_power4)
5bd4f169 2363 {
805fc799
AM
2364 /* Set 'a' bit. This is 0b00010 in BO field for branch
2365 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2366 for branch on CTR insns (BO == 1a00t or 1a01t). */
2367 if ((insn & (0x14 << 21)) == (0x04 << 21))
2368 insn |= 0x02 << 21;
2369 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2370 insn |= 0x08 << 21;
2371 else
2441e016 2372 goto out;
5bd4f169 2373 }
805fc799
AM
2374 else
2375 {
2376 bfd_vma target = 0;
2377 bfd_vma from;
5bd4f169 2378
805fc799
AM
2379 if (!bfd_is_com_section (symbol->section))
2380 target = symbol->value;
2381 target += symbol->section->output_section->vma;
2382 target += symbol->section->output_offset;
2383 target += reloc_entry->addend;
5bd4f169 2384
805fc799
AM
2385 from = (reloc_entry->address
2386 + input_section->output_offset
2387 + input_section->output_section->vma);
5bd4f169 2388
805fc799
AM
2389 /* Invert 'y' bit if not the default. */
2390 if ((bfd_signed_vma) (target - from) < 0)
2391 insn ^= 0x01 << 21;
2392 }
4ce794b7 2393 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM
2394 out:
2395 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2396 input_section, output_bfd, error_message);
805fc799 2397}
5bd4f169 2398
805fc799 2399static bfd_reloc_status_type
4ce794b7
AM
2400ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2401 void *data, asection *input_section,
2402 bfd *output_bfd, char **error_message)
805fc799
AM
2403{
2404 /* If this is a relocatable link (output_bfd test tells us), just
2405 call the generic function. Any adjustment will be done at final
2406 link time. */
2407 if (output_bfd != NULL)
cedb70c5 2408 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2409 input_section, output_bfd, error_message);
5bd4f169 2410
805fc799
AM
2411 /* Subtract the symbol section base address. */
2412 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM
2413 return bfd_reloc_continue;
2414}
2415
805fc799 2416static bfd_reloc_status_type
4ce794b7
AM
2417ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2418 void *data, asection *input_section,
2419 bfd *output_bfd, char **error_message)
805fc799
AM
2420{
2421 /* If this is a relocatable link (output_bfd test tells us), just
2422 call the generic function. Any adjustment will be done at final
2423 link time. */
2424 if (output_bfd != NULL)
cedb70c5 2425 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2426 input_section, output_bfd, error_message);
2427
2428 /* Subtract the symbol section base address. */
2429 reloc_entry->addend -= symbol->section->output_section->vma;
2430
2431 /* Adjust the addend for sign extension of the low 16 bits. */
2432 reloc_entry->addend += 0x8000;
2433 return bfd_reloc_continue;
2434}
2435
2436static bfd_reloc_status_type
4ce794b7
AM
2437ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2438 void *data, asection *input_section,
2439 bfd *output_bfd, char **error_message)
805fc799
AM
2440{
2441 bfd_vma TOCstart;
2442
2443 /* If this is a relocatable link (output_bfd test tells us), just
2444 call the generic function. Any adjustment will be done at final
2445 link time. */
2446 if (output_bfd != NULL)
cedb70c5 2447 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2448 input_section, output_bfd, error_message);
2449
2450 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2451 if (TOCstart == 0)
2452 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2453
2454 /* Subtract the TOC base address. */
2455 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2456 return bfd_reloc_continue;
2457}
2458
2459static bfd_reloc_status_type
4ce794b7
AM
2460ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
805fc799
AM
2463{
2464 bfd_vma TOCstart;
2465
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2468 link time. */
2469 if (output_bfd != NULL)
cedb70c5 2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2471 input_section, output_bfd, error_message);
2472
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2474 if (TOCstart == 0)
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2476
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479
2480 /* Adjust the addend for sign extension of the low 16 bits. */
2481 reloc_entry->addend += 0x8000;
2482 return bfd_reloc_continue;
2483}
2484
2485static bfd_reloc_status_type
4ce794b7
AM
2486ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2487 void *data, asection *input_section,
2488 bfd *output_bfd, char **error_message)
805fc799
AM
2489{
2490 bfd_vma TOCstart;
2491 bfd_size_type octets;
2492
2493 /* If this is a relocatable link (output_bfd test tells us), just
2494 call the generic function. Any adjustment will be done at final
2495 link time. */
2496 if (output_bfd != NULL)
cedb70c5 2497 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2498 input_section, output_bfd, error_message);
2499
2500 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2501 if (TOCstart == 0)
2502 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2503
2504 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2505 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2506 return bfd_reloc_ok;
2507}
2508
2509static bfd_reloc_status_type
4ce794b7
AM
2510ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2511 void *data, asection *input_section,
2512 bfd *output_bfd, char **error_message)
805fc799
AM
2513{
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2516 link time. */
2517 if (output_bfd != NULL)
cedb70c5 2518 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2519 input_section, output_bfd, error_message);
2520
2521 if (error_message != NULL)
2522 {
2523 static char buf[60];
2524 sprintf (buf, "generic linker can't handle %s",
2525 reloc_entry->howto->name);
2526 *error_message = buf;
2527 }
2528 return bfd_reloc_dangerous;
2529}
2530
927be08e
AM
2531/* Track GOT entries needed for a given symbol. We might need more
2532 than one got entry per symbol. */
2533struct got_entry
2534{
2535 struct got_entry *next;
2536
2537 /* The symbol addend that we'll be placing in the GOT. */
2538 bfd_vma addend;
2539
2540 /* Unlike other ELF targets, we use separate GOT entries for the same
2541 symbol referenced from different input files. This is to support
2542 automatic multiple TOC/GOT sections, where the TOC base can vary
2543 from one input file to another. After partitioning into TOC groups
2544 we merge entries within the group.
2545
2546 Point to the BFD owning this GOT entry. */
2547 bfd *owner;
2548
2549 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2550 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2551 unsigned char tls_type;
927be08e
AM
2552
2553 /* Non-zero if got.ent points to real entry. */
f961d9dd 2554 unsigned char is_indirect;
927be08e
AM
2555
2556 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2557 union
2558 {
2559 bfd_signed_vma refcount;
2560 bfd_vma offset;
2561 struct got_entry *ent;
2562 } got;
2563};
2564
2565/* The same for PLT. */
2566struct plt_entry
2567{
2568 struct plt_entry *next;
2569
2570 bfd_vma addend;
2571
2572 union
2573 {
2574 bfd_signed_vma refcount;
2575 bfd_vma offset;
2576 } plt;
2577};
2578
e717da7e
AM
2579struct ppc64_elf_obj_tdata
2580{
2581 struct elf_obj_tdata elf;
2582
2583 /* Shortcuts to dynamic linker sections. */
2584 asection *got;
2585 asection *relgot;
2586
b3fac117
AM
2587 /* Used during garbage collection. We attach global symbols defined
2588 on removed .opd entries to this section so that the sym is removed. */
2589 asection *deleted_section;
81688140 2590
927be08e 2591 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2592 sections means we potentially need one of these for each input bfd. */
927be08e 2593 struct got_entry tlsld_got;
8860955f
AM
2594
2595 /* A copy of relocs before they are modified for --emit-relocs. */
2596 Elf_Internal_Rela *opd_relocs;
d77c8a4b
AM
2597
2598 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2599 the reloc to be in the range -32768 to 32767. */
2600 unsigned int has_small_toc_reloc;
e717da7e
AM
2601};
2602
2603#define ppc64_elf_tdata(bfd) \
2604 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2605
2606#define ppc64_tlsld_got(bfd) \
2607 (&ppc64_elf_tdata (bfd)->tlsld_got)
2608
0c8d6e5c
AM
2609#define is_ppc64_elf(bfd) \
2610 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2611 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2612
e717da7e
AM
2613/* Override the generic function because we store some extras. */
2614
2615static bfd_boolean
2616ppc64_elf_mkobject (bfd *abfd)
2617{
0ffa91dd 2618 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2619 PPC64_ELF_DATA);
e717da7e
AM
2620}
2621
feee612b
AM
2622/* Fix bad default arch selected for a 64 bit input bfd when the
2623 default is 32 bit. */
2624
b34976b6 2625static bfd_boolean
4ce794b7 2626ppc64_elf_object_p (bfd *abfd)
feee612b
AM
2627{
2628 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2629 {
2630 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2631
2632 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2633 {
2634 /* Relies on arch after 32 bit default being 64 bit default. */
2635 abfd->arch_info = abfd->arch_info->next;
2636 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2637 }
2638 }
b34976b6 2639 return TRUE;
feee612b
AM
2640}
2641
d37c89e5
AM
2642/* Support for core dump NOTE sections. */
2643
2644static bfd_boolean
2645ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2646{
eea6121a 2647 size_t offset, size;
d37c89e5
AM
2648
2649 if (note->descsz != 504)
2650 return FALSE;
2651
2652 /* pr_cursig */
2653 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2654
2655 /* pr_pid */
261b8d08 2656 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM
2657
2658 /* pr_reg */
2659 offset = 112;
eea6121a 2660 size = 384;
d37c89e5
AM
2661
2662 /* Make a ".reg/999" section. */
2663 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2664 size, note->descpos + offset);
d37c89e5
AM
2665}
2666
2667static bfd_boolean
2668ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2669{
2670 if (note->descsz != 136)
2671 return FALSE;
2672
bc989cdc
JK
2673 elf_tdata (abfd)->core_pid
2674 = bfd_get_32 (abfd, note->descdata + 24);
d37c89e5
AM
2675 elf_tdata (abfd)->core_program
2676 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2677 elf_tdata (abfd)->core_command
2678 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2679
2680 return TRUE;
2681}
2682
183e98be
AM
2683static char *
2684ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2685 ...)
2686{
2687 switch (note_type)
2688 {
2689 default:
2690 return NULL;
2691
2692 case NT_PRPSINFO:
2693 {
2694 char data[136];
2695 va_list ap;
2696
2697 va_start (ap, note_type);
2698 memset (data, 0, 40);
2699 strncpy (data + 40, va_arg (ap, const char *), 16);
2700 strncpy (data + 56, va_arg (ap, const char *), 80);
2701 va_end (ap);
2702 return elfcore_write_note (abfd, buf, bufsiz,
2703 "CORE", note_type, data, sizeof (data));
2704 }
2705
2706 case NT_PRSTATUS:
2707 {
2708 char data[504];
2709 va_list ap;
2710 long pid;
2711 int cursig;
2712 const void *greg;
2713
2714 va_start (ap, note_type);
2715 memset (data, 0, 112);
2716 pid = va_arg (ap, long);
2717 bfd_put_32 (abfd, pid, data + 32);
2718 cursig = va_arg (ap, int);
2719 bfd_put_16 (abfd, cursig, data + 12);
2720 greg = va_arg (ap, const void *);
2721 memcpy (data + 112, greg, 384);
2722 memset (data + 496, 0, 8);
2723 va_end (ap);
2724 return elfcore_write_note (abfd, buf, bufsiz,
2725 "CORE", note_type, data, sizeof (data));
2726 }
2727 }
2728}
2729
5bd4f169
AM
2730/* Merge backend specific data from an object file to the output
2731 object file when linking. */
2f6d9989 2732
b34976b6 2733static bfd_boolean
4ce794b7 2734ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2735{
5bd4f169
AM
2736 /* Check if we have the same endianess. */
2737 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2738 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM
2739 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2740 {
2741 const char *msg;
2742
2743 if (bfd_big_endian (ibfd))
d003868e 2744 msg = _("%B: compiled for a big endian system "
4ce794b7 2745 "and target is little endian");
5bd4f169 2746 else
d003868e 2747 msg = _("%B: compiled for a little endian system "
4ce794b7 2748 "and target is big endian");
5bd4f169 2749
d003868e 2750 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM
2751
2752 bfd_set_error (bfd_error_wrong_format);
b34976b6 2753 return FALSE;
5bd4f169
AM
2754 }
2755
b34976b6 2756 return TRUE;
5bd4f169 2757}
f0abc2a1 2758
5d35169e
AM
2759/* Add extra PPC sections. */
2760
b35d266b 2761static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2762{
0112cd26
NC
2763 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2764 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2767 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2768 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2769 { NULL, 0, 0, 0, 0 }
5d35169e
AM
2770};
2771
7c8fe5c4
AM
2772enum _ppc64_sec_type {
2773 sec_normal = 0,
2774 sec_opd = 1,
2775 sec_toc = 2
2776};
2777
f0abc2a1
AM
2778struct _ppc64_elf_section_data
2779{
2780 struct bfd_elf_section_data elf;
411e1bfb 2781
f0abc2a1
AM
2782 union
2783 {
74f0fb50
AM
2784 /* An array with one entry for each opd function descriptor. */
2785 struct _opd_sec_data
2786 {
2787 /* Points to the function code section for local opd entries. */
2788 asection **func_sec;
2789
2790 /* After editing .opd, adjust references to opd local syms. */
2791 long *adjust;
2792 } opd;
7c8fe5c4 2793
3a71aa26
AM
2794 /* An array for toc sections, indexed by offset/8. */
2795 struct _toc_sec_data
2796 {
2797 /* Specifies the relocation symbol index used at a given toc offset. */
2798 unsigned *symndx;
2799
2800 /* And the relocation addend. */
2801 bfd_vma *add;
2802 } toc;
7c8fe5c4
AM
2803 } u;
2804
2805 enum _ppc64_sec_type sec_type:2;
411e1bfb 2806
7c8fe5c4
AM
2807 /* Flag set when small branches are detected. Used to
2808 select suitable defaults for the stub group size. */
2809 unsigned int has_14bit_branch:1;
f0abc2a1
AM
2810};
2811
2812#define ppc64_elf_section_data(sec) \
411e1bfb 2813 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM
2814
2815static bfd_boolean
4ce794b7 2816ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2817{
f592407e
AM
2818 if (!sec->used_by_bfd)
2819 {
2820 struct _ppc64_elf_section_data *sdata;
2821 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2822
f592407e
AM
2823 sdata = bfd_zalloc (abfd, amt);
2824 if (sdata == NULL)
2825 return FALSE;
2826 sec->used_by_bfd = sdata;
2827 }
f0abc2a1
AM
2828
2829 return _bfd_elf_new_section_hook (abfd, sec);
2830}
4025353c 2831
74f0fb50 2832static struct _opd_sec_data *
4025353c
AM
2833get_opd_info (asection * sec)
2834{
2835 if (sec != NULL
2836 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 2837 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 2838 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM
2839 return NULL;
2840}
90e3cdf2
JJ
2841\f
2842/* Parameters for the qsort hook. */
90e3cdf2
JJ
2843static bfd_boolean synthetic_relocatable;
2844
699733f6 2845/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ
2846
2847static int
2848compare_symbols (const void *ap, const void *bp)
2849{
2850 const asymbol *a = * (const asymbol **) ap;
2851 const asymbol *b = * (const asymbol **) bp;
2852
699733f6
AM
2853 /* Section symbols first. */
2854 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2855 return -1;
699733f6 2856 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ
2857 return 1;
2858
699733f6 2859 /* then .opd symbols. */
ffcfec52
AM
2860 if (strcmp (a->section->name, ".opd") == 0
2861 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 2862 return -1;
ffcfec52
AM
2863 if (strcmp (a->section->name, ".opd") != 0
2864 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ
2865 return 1;
2866
699733f6 2867 /* then other code symbols. */
90e3cdf2
JJ
2868 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 == (SEC_CODE | SEC_ALLOC)
2870 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2871 != (SEC_CODE | SEC_ALLOC))
2872 return -1;
2873
2874 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 != (SEC_CODE | SEC_ALLOC)
2876 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2877 == (SEC_CODE | SEC_ALLOC))
2878 return 1;
2879
2880 if (synthetic_relocatable)
2881 {
2882 if (a->section->id < b->section->id)
2883 return -1;
2884
2885 if (a->section->id > b->section->id)
2886 return 1;
2887 }
2888
2889 if (a->value + a->section->vma < b->value + b->section->vma)
2890 return -1;
2891
2892 if (a->value + a->section->vma > b->value + b->section->vma)
2893 return 1;
2894
4d35a0aa
AM
2895 /* For syms with the same value, prefer strong dynamic global function
2896 syms over other syms. */
2897 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 return -1;
2899
2900 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 return 1;
2902
2903 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 return -1;
2905
2906 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 return 1;
2908
2909 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 return -1;
2911
2912 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 return 1;
2914
2915 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 return -1;
2917
2918 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2919 return 1;
2920
90e3cdf2
JJ
2921 return 0;
2922}
2923
699733f6 2924/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2925
699733f6
AM
2926static asymbol *
2927sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2928{
699733f6 2929 long mid;
90e3cdf2 2930
699733f6
AM
2931 if (id == -1)
2932 {
2933 while (lo < hi)
2934 {
2935 mid = (lo + hi) >> 1;
2936 if (syms[mid]->value + syms[mid]->section->vma < value)
2937 lo = mid + 1;
2938 else if (syms[mid]->value + syms[mid]->section->vma > value)
2939 hi = mid;
2940 else
2941 return syms[mid];
2942 }
2943 }
2944 else
2945 {
2946 while (lo < hi)
2947 {
2948 mid = (lo + hi) >> 1;
2949 if (syms[mid]->section->id < id)
2950 lo = mid + 1;
2951 else if (syms[mid]->section->id > id)
2952 hi = mid;
2953 else if (syms[mid]->value < value)
2954 lo = mid + 1;
2955 else if (syms[mid]->value > value)
2956 hi = mid;
2957 else
2958 return syms[mid];
2959 }
2960 }
2961 return NULL;
90e3cdf2
JJ
2962}
2963
468392fb
AM
2964static bfd_boolean
2965section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2966{
2967 bfd_vma vma = *(bfd_vma *) ptr;
2968 return ((section->flags & SEC_ALLOC) != 0
2969 && section->vma <= vma
2970 && vma < section->vma + section->size);
2971}
2972
699733f6 2973/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 2974 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ
2975
2976static long
a7535cf3
AM
2977ppc64_elf_get_synthetic_symtab (bfd *abfd,
2978 long static_count, asymbol **static_syms,
2979 long dyn_count, asymbol **dyn_syms,
c9727e01 2980 asymbol **ret)
90e3cdf2
JJ
2981{
2982 asymbol *s;
699733f6
AM
2983 long i;
2984 long count;
90e3cdf2 2985 char *names;
a7535cf3 2986 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2987 asection *opd;
90e3cdf2 2988 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2989 asymbol **syms;
90e3cdf2
JJ
2990
2991 *ret = NULL;
2992
2993 opd = bfd_get_section_by_name (abfd, ".opd");
2994 if (opd == NULL)
2995 return 0;
2996
a7535cf3 2997 symcount = static_count;
c9727e01 2998 if (!relocatable)
a7535cf3 2999 symcount += dyn_count;
90e3cdf2 3000 if (symcount == 0)
c9727e01 3001 return 0;
90e3cdf2 3002
a7535cf3
AM
3003 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3004 if (syms == NULL)
7356fed5 3005 return -1;
a7535cf3
AM
3006
3007 if (!relocatable && static_count != 0 && dyn_count != 0)
3008 {
3009 /* Use both symbol tables. */
3010 memcpy (syms, static_syms, static_count * sizeof (*syms));
3011 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3012 }
3013 else if (!relocatable && static_count == 0)
3014 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3015 else
3016 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3017
90e3cdf2 3018 synthetic_relocatable = relocatable;
595da8c5 3019 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3020
c9727e01
AM
3021 if (!relocatable && symcount > 1)
3022 {
3023 long j;
3024 /* Trim duplicate syms, since we may have merged the normal and
3025 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3026 different values, so trim any with the same value. */
c9727e01
AM
3027 for (i = 1, j = 1; i < symcount; ++i)
3028 if (syms[i - 1]->value + syms[i - 1]->section->vma
3029 != syms[i]->value + syms[i]->section->vma)
3030 syms[j++] = syms[i];
3031 symcount = j;
3032 }
3033
699733f6 3034 i = 0;
ffcfec52 3035 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM
3036 ++i;
3037 codesecsym = i;
90e3cdf2 3038
699733f6
AM
3039 for (; i < symcount; ++i)
3040 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3041 != (SEC_CODE | SEC_ALLOC))
3042 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3043 break;
3044 codesecsymend = i;
90e3cdf2 3045
699733f6
AM
3046 for (; i < symcount; ++i)
3047 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3048 break;
3049 secsymend = i;
90e3cdf2 3050
699733f6 3051 for (; i < symcount; ++i)
ffcfec52 3052 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM
3053 break;
3054 opdsymend = i;
90e3cdf2 3055
699733f6
AM
3056 for (; i < symcount; ++i)
3057 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3058 != (SEC_CODE | SEC_ALLOC))
3059 break;
3060 symcount = i;
3061
c9727e01 3062 count = 0;
90e3cdf2 3063
699733f6 3064 if (relocatable)
90e3cdf2 3065 {
699733f6
AM
3066 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3067 arelent *r;
3068 size_t size;
3069 long relcount;
90e3cdf2 3070
468392fb
AM
3071 if (opdsymend == secsymend)
3072 goto done;
3073
699733f6 3074 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3075 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3076 if (relcount == 0)
c9727e01 3077 goto done;
90e3cdf2 3078
7356fed5
AM
3079 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3080 {
3081 count = -1;
3082 goto done;
3083 }
3084
699733f6 3085 size = 0;
595da8c5 3086 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM
3087 {
3088 asymbol *sym;
90e3cdf2 3089
595da8c5 3090 while (r < opd->relocation + relcount
699733f6
AM
3091 && r->address < syms[i]->value + opd->vma)
3092 ++r;
90e3cdf2 3093
595da8c5 3094 if (r == opd->relocation + relcount)
699733f6 3095 break;
90e3cdf2 3096
699733f6
AM
3097 if (r->address != syms[i]->value + opd->vma)
3098 continue;
90e3cdf2 3099
699733f6
AM
3100 if (r->howto->type != R_PPC64_ADDR64)
3101 continue;
90e3cdf2 3102
699733f6
AM
3103 sym = *r->sym_ptr_ptr;
3104 if (!sym_exists_at (syms, opdsymend, symcount,
3105 sym->section->id, sym->value + r->addend))
3106 {
3107 ++count;
3108 size += sizeof (asymbol);
3109 size += strlen (syms[i]->name) + 2;
3110 }
3111 }
90e3cdf2 3112
699733f6
AM
3113 s = *ret = bfd_malloc (size);
3114 if (s == NULL)
3115 {
7356fed5 3116 count = -1;
c9727e01 3117 goto done;
699733f6 3118 }
90e3cdf2 3119
699733f6 3120 names = (char *) (s + count);
90e3cdf2 3121
595da8c5 3122 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3123 {
699733f6 3124 asymbol *sym;
90e3cdf2 3125
595da8c5 3126 while (r < opd->relocation + relcount
699733f6
AM
3127 && r->address < syms[i]->value + opd->vma)
3128 ++r;
90e3cdf2 3129
595da8c5 3130 if (r == opd->relocation + relcount)
699733f6
AM
3131 break;
3132
3133 if (r->address != syms[i]->value + opd->vma)
3134 continue;
3135
3136 if (r->howto->type != R_PPC64_ADDR64)
3137 continue;
90e3cdf2 3138
699733f6
AM
3139 sym = *r->sym_ptr_ptr;
3140 if (!sym_exists_at (syms, opdsymend, symcount,
3141 sym->section->id, sym->value + r->addend))
3142 {
3143 size_t len;
3144
3145 *s = *syms[i];
6ba2a415 3146 s->flags |= BSF_SYNTHETIC;
699733f6
AM
3147 s->section = sym->section;
3148 s->value = sym->value + r->addend;
3149 s->name = names;
3150 *names++ = '.';
3151 len = strlen (syms[i]->name);
3152 memcpy (names, syms[i]->name, len + 1);
3153 names += len + 1;
6f610d07
UW
3154 /* Have udata.p point back to the original symbol this
3155 synthetic symbol was derived from. */
3156 s->udata.p = syms[i];
699733f6
AM
3157 s++;
3158 }
3159 }
3160 }
3161 else
90e3cdf2 3162 {
468392fb 3163 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
699733f6
AM
3164 bfd_byte *contents;
3165 size_t size;
468392fb
AM
3166 long plt_count = 0;
3167 bfd_vma glink_vma = 0, resolv_vma = 0;
3168 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 arelent *p;
90e3cdf2 3170
699733f6
AM
3171 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3172 {
3173 if (contents)
c9727e01
AM
3174 {
3175 free_contents_and_exit:
3176 free (contents);
3177 }
7356fed5 3178 count = -1;
c9727e01 3179 goto done;
699733f6 3180 }
90e3cdf2 3181
699733f6
AM
3182 size = 0;
3183 for (i = secsymend; i < opdsymend; ++i)
3184 {
3185 bfd_vma ent;
90e3cdf2 3186
5ef11c02
AM
3187 /* Ignore bogus symbols. */
3188 if (syms[i]->value > opd->size - 8)
3189 continue;
3190
699733f6
AM
3191 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3192 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 {
3194 ++count;
3195 size += sizeof (asymbol);
3196 size += strlen (syms[i]->name) + 2;
3197 }
3198 }
90e3cdf2 3199
468392fb 3200 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM
3201 if (dyn_count != 0
3202 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM
3203 {
3204 bfd_byte *dynbuf, *extdyn, *extdynend;
3205 size_t extdynsize;
3206 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3207
3208 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3209 goto free_contents_and_exit;
3210
3211 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3212 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213
3214 extdyn = dynbuf;
3215 extdynend = extdyn + dynamic->size;
3216 for (; extdyn < extdynend; extdyn += extdynsize)
3217 {
3218 Elf_Internal_Dyn dyn;
3219 (*swap_dyn_in) (abfd, extdyn, &dyn);
3220
3221 if (dyn.d_tag == DT_NULL)
3222 break;
3223
3224 if (dyn.d_tag == DT_PPC64_GLINK)
3225 {
3226 /* The first glink stub starts at offset 32; see comment in
3227 ppc64_elf_finish_dynamic_sections. */
3228 glink_vma = dyn.d_un.d_val + 32;
3229 /* The .glink section usually does not survive the final
3230 link; search for the section (usually .text) where the
3231 glink stubs now reside. */
3232 glink = bfd_sections_find_if (abfd, section_covers_vma,
3233 &glink_vma);
3234 break;
3235 }
3236 }
3237
3238 free (dynbuf);
3239 }
3240
3241 if (glink != NULL)
3242 {
3243 /* Determine __glink trampoline by reading the relative branch
3244 from the first glink stub. */
3245 bfd_byte buf[4];
3246 if (bfd_get_section_contents (abfd, glink, buf,
3247 glink_vma + 4 - glink->vma, 4))
3248 {
3249 unsigned int insn = bfd_get_32 (abfd, buf);
3250 insn ^= B_DOT;
3251 if ((insn & ~0x3fffffc) == 0)
3252 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3253 }
3254
3255 if (resolv_vma)
3256 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3257
066ee829
AM
3258 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 if (relplt != NULL)
3260 {
3261 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3262 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3263 goto free_contents_and_exit;
468392fb 3264
066ee829
AM
3265 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3266 size += plt_count * sizeof (asymbol);
468392fb 3267
066ee829
AM
3268 p = relplt->relocation;
3269 for (i = 0; i < plt_count; i++, p++)
e054468f
AM
3270 {
3271 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3272 if (p->addend != 0)
3273 size += sizeof ("+0x") - 1 + 16;
3274 }
066ee829 3275 }
468392fb
AM
3276 }
3277
699733f6
AM
3278 s = *ret = bfd_malloc (size);
3279 if (s == NULL)
7356fed5 3280 goto free_contents_and_exit;
90e3cdf2 3281
468392fb 3282 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3283
699733f6 3284 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3285 {
699733f6 3286 bfd_vma ent;
90e3cdf2 3287
5ef11c02
AM
3288 if (syms[i]->value > opd->size - 8)
3289 continue;
3290
699733f6
AM
3291 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3292 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3293 {
c9727e01 3294 long lo, hi;
699733f6 3295 size_t len;
c9727e01 3296 asection *sec = abfd->sections;
90e3cdf2 3297
699733f6
AM
3298 *s = *syms[i];
3299 lo = codesecsym;
3300 hi = codesecsymend;
3301 while (lo < hi)
3302 {
c9727e01 3303 long mid = (lo + hi) >> 1;
699733f6
AM
3304 if (syms[mid]->section->vma < ent)
3305 lo = mid + 1;
3306 else if (syms[mid]->section->vma > ent)
3307 hi = mid;
3308 else
c9727e01
AM
3309 {
3310 sec = syms[mid]->section;
3311 break;
3312 }
699733f6
AM
3313 }
3314
c9727e01 3315 if (lo >= hi && lo > codesecsym)
699733f6 3316 sec = syms[lo - 1]->section;
699733f6
AM
3317
3318 for (; sec != NULL; sec = sec->next)
3319 {
3320 if (sec->vma > ent)
3321 break;
63524580
JK
3322 /* SEC_LOAD may not be set if SEC is from a separate debug
3323 info file. */
3324 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM
3325 break;
3326 if ((sec->flags & SEC_CODE) != 0)
3327 s->section = sec;
3328 }
6ba2a415 3329 s->flags |= BSF_SYNTHETIC;
699733f6
AM
3330 s->value = ent - s->section->vma;
3331 s->name = names;
3332 *names++ = '.';
3333 len = strlen (syms[i]->name);
3334 memcpy (names, syms[i]->name, len + 1);
3335 names += len + 1;
6f610d07
UW
3336 /* Have udata.p point back to the original symbol this
3337 synthetic symbol was derived from. */
3338 s->udata.p = syms[i];
699733f6 3339 s++;
90e3cdf2 3340 }
90e3cdf2 3341 }
699733f6 3342 free (contents);
468392fb
AM
3343
3344 if (glink != NULL && relplt != NULL)
3345 {
3346 if (resolv_vma)
3347 {
3348 /* Add a symbol for the main glink trampoline. */
86a4952b 3349 memset (s, 0, sizeof *s);
468392fb 3350 s->the_bfd = abfd;
6ba2a415 3351 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3352 s->section = glink;
3353 s->value = resolv_vma - glink->vma;
3354 s->name = names;
3355 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3356 names += sizeof ("__glink_PLTresolve");
3357 s++;
3358 count++;
3359 }
3360
3361 /* FIXME: It would be very much nicer to put sym@plt on the
3362 stub rather than on the glink branch table entry. The
3363 objdump disassembler would then use a sensible symbol
3364 name on plt calls. The difficulty in doing so is
3365 a) finding the stubs, and,
3366 b) matching stubs against plt entries, and,
3367 c) there can be multiple stubs for a given plt entry.
3368
3369 Solving (a) could be done by code scanning, but older
3370 ppc64 binaries used different stubs to current code.
3371 (b) is the tricky one since you need to known the toc
3372 pointer for at least one function that uses a pic stub to
3373 be able to calculate the plt address referenced.
3374 (c) means gdb would need to set multiple breakpoints (or
3375 find the glink branch itself) when setting breakpoints
3376 for pending shared library loads. */
3377 p = relplt->relocation;
3378 for (i = 0; i < plt_count; i++, p++)
3379 {
3380 size_t len;
3381
3382 *s = **p->sym_ptr_ptr;
3383 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3384 we are defining a symbol, ensure one of them is set. */
3385 if ((s->flags & BSF_LOCAL) == 0)
3386 s->flags |= BSF_GLOBAL;
6ba2a415 3387 s->flags |= BSF_SYNTHETIC;
468392fb
AM
3388 s->section = glink;
3389 s->value = glink_vma - glink->vma;
3390 s->name = names;
3391 s->udata.p = NULL;
3392 len = strlen ((*p->sym_ptr_ptr)->name);
3393 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3394 names += len;
e054468f
AM
3395 if (p->addend != 0)
3396 {
3397 memcpy (names, "+0x", sizeof ("+0x") - 1);
3398 names += sizeof ("+0x") - 1;
3399 bfd_sprintf_vma (abfd, names, p->addend);
3400 names += strlen (names);
3401 }
468392fb
AM
3402 memcpy (names, "@plt", sizeof ("@plt"));
3403 names += sizeof ("@plt");
3404 s++;
3405 glink_vma += 8;
3406 if (i >= 0x8000)
3407 glink_vma += 4;
3408 }
3409 count += plt_count;
3410 }
90e3cdf2
JJ
3411 }
3412
c9727e01 3413 done:
a7535cf3 3414 free (syms);
90e3cdf2
JJ
3415 return count;
3416}
5bd4f169 3417\f
65f38f15
AM
3418/* The following functions are specific to the ELF linker, while
3419 functions above are used generally. Those named ppc64_elf_* are
3420 called by the main ELF linker code. They appear in this file more
3421 or less in the order in which they are called. eg.
3422 ppc64_elf_check_relocs is called early in the link process,
3423 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM
3424 called.
3425
3426 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3427 functions have both a function code symbol and a function descriptor
3428 symbol. A call to foo in a relocatable object file looks like:
3429
3430 . .text
3431 . x:
3432 . bl .foo
3433 . nop
3434
3435 The function definition in another object file might be:
3436
3437 . .section .opd
3438 . foo: .quad .foo
3439 . .quad .TOC.@tocbase
3440 . .quad 0
3441 .
3442 . .text
3443 . .foo: blr
3444
3445 When the linker resolves the call during a static link, the branch
3446 unsurprisingly just goes to .foo and the .opd information is unused.
3447 If the function definition is in a shared library, things are a little
3448 different: The call goes via a plt call stub, the opd information gets
3449 copied to the plt, and the linker patches the nop.
3450
3451 . x:
3452 . bl .foo_stub
3453 . ld 2,40(1)
3454 .
3455 .
3456 . .foo_stub:
3457 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3458 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM
3459 . std 2,40(1) # this is the general idea
3460 . ld 11,0(12)
3461 . ld 2,8(12)
3462 . mtctr 11
3463 . ld 11,16(12)
3464 . bctr
3465 .
3466 . .section .plt
3467 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3468
3469 The "reloc ()" notation is supposed to indicate that the linker emits
3470 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 copying.
3472
3473 What are the difficulties here? Well, firstly, the relocations
3474 examined by the linker in check_relocs are against the function code
3475 sym .foo, while the dynamic relocation in the plt is emitted against
3476 the function descriptor symbol, foo. Somewhere along the line, we need
3477 to carefully copy dynamic link information from one symbol to the other.
3478 Secondly, the generic part of the elf linker will make .foo a dynamic
3479 symbol as is normal for most other backends. We need foo dynamic
3480 instead, at least for an application final link. However, when
3481 creating a shared library containing foo, we need to have both symbols
3482 dynamic so that references to .foo are satisfied during the early
3483 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM
3484 definition from some other object, eg. a static library.
3485
3486 Update: As of August 2004, we support a new convention. Function
3487 calls may use the function descriptor symbol, ie. "bl foo". This
3488 behaves exactly as "bl .foo". */
65f38f15
AM
3489
3490/* The linker needs to keep track of the number of relocs that it
3491 decides to copy as dynamic relocs in check_relocs for each symbol.
3492 This is so that it can later discard them if they are found to be
3493 unnecessary. We store the information in a field extending the
3494 regular ELF linker hash table. */
3495
3496struct ppc_dyn_relocs
3497{
3498 struct ppc_dyn_relocs *next;
3499
3500 /* The input section of the reloc. */
3501 asection *sec;
3502
3503 /* Total number of relocs copied for the input section. */
3504 bfd_size_type count;
3505
3506 /* Number of pc-relative relocs copied for the input section. */
3507 bfd_size_type pc_count;
3508};
3509
1d483afe 3510/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM
3511 selects those that must be copied when linking a shared library,
3512 even when the symbol is local. */
65f38f15 3513
1d483afe
AM
3514static int
3515must_be_dyn_reloc (struct bfd_link_info *info,
3516 enum elf_ppc64_reloc_type r_type)
3517{
3518 switch (r_type)
3519 {
3520 default:
3521 return 1;
3522
3523 case R_PPC64_REL32:
3524 case R_PPC64_REL64:
3525 case R_PPC64_REL30:
3526 return 0;
3527
3528 case R_PPC64_TPREL16:
3529 case R_PPC64_TPREL16_LO:
3530 case R_PPC64_TPREL16_HI:
3531 case R_PPC64_TPREL16_HA:
3532 case R_PPC64_TPREL16_DS:
3533 case R_PPC64_TPREL16_LO_DS:
3534 case R_PPC64_TPREL16_HIGHER:
3535 case R_PPC64_TPREL16_HIGHERA:
3536 case R_PPC64_TPREL16_HIGHEST:
3537 case R_PPC64_TPREL16_HIGHESTA:
3538 case R_PPC64_TPREL64:
3539 return !info->executable;
3540 }
3541}
65f38f15 3542
f4656909
AM
3543/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3544 copying dynamic variables from a shared lib into an app's dynbss
3545 section, and instead use a dynamic relocation to point into the
5d35169e
AM
3546 shared lib. With code that gcc generates, it's vital that this be
3547 enabled; In the PowerPC64 ABI, the address of a function is actually
3548 the address of a function descriptor, which resides in the .opd
3549 section. gcc uses the descriptor directly rather than going via the
3550 GOT as some other ABI's do, which means that initialized function
3551 pointers must reference the descriptor. Thus, a function pointer
3552 initialized to the address of a function in a shared library will
3553 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3554 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM
3555 presents a problem as a plt entry for that function is also
3556 initialized from the function descriptor symbol and the copy reloc
3557 may not be initialized first. */
a23b6845 3558#define ELIMINATE_COPY_RELOCS 1
f4656909 3559
721956f4
AM
3560/* Section name for stubs is the associated section name plus this
3561 string. */
3562#define STUB_SUFFIX ".stub"
3563
3564/* Linker stubs.
3565 ppc_stub_long_branch:
3566 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3567 destination, but a 24 bit branch in a stub section will reach.
3568 . b dest
3569
3570 ppc_stub_plt_branch:
3571 Similar to the above, but a 24 bit branch in the stub section won't
3572 reach its destination.
87e226ce
AM
3573 . addis %r12,%r2,xxx@toc@ha
3574 . ld %r11,xxx@toc@l(%r12)
721956f4
AM
3575 . mtctr %r11
3576 . bctr
3577
3578 ppc_stub_plt_call:
2c66dc6c
AM
3579 Used to call a function in a shared library. If it so happens that
3580 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3581 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3582 . addis %r12,%r2,xxx@toc@ha
721956f4 3583 . std %r2,40(%r1)
87e226ce 3584 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3585 . mtctr %r11
ac2df442 3586 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3587 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3588 . bctr
ad8e1ba5
AM
3589
3590 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3591 code to adjust the value and save r2 to support multiple toc sections.
3592 A ppc_stub_long_branch with an r2 offset looks like:
3593 . std %r2,40(%r1)
3594 . addis %r2,%r2,off@ha
3595 . addi %r2,%r2,off@l
3596 . b dest
3597
3598 A ppc_stub_plt_branch with an r2 offset looks like:
3599 . std %r2,40(%r1)
3600 . addis %r12,%r2,xxx@toc@ha
3601 . ld %r11,xxx@toc@l(%r12)
3602 . addis %r2,%r2,off@ha
3603 . addi %r2,%r2,off@l
3604 . mtctr %r11
3605 . bctr
ac2df442
AM
3606
3607 In cases where the "addis" instruction would add zero, the "addis" is
3608 omitted and following instructions modified slightly in some cases.
721956f4
AM
3609*/
3610
3611enum ppc_stub_type {
3612 ppc_stub_none,
3613 ppc_stub_long_branch,
ad8e1ba5 3614 ppc_stub_long_branch_r2off,
721956f4 3615 ppc_stub_plt_branch,
ad8e1ba5 3616 ppc_stub_plt_branch_r2off,
721956f4
AM
3617 ppc_stub_plt_call
3618};
3619
3620struct ppc_stub_hash_entry {
3621
3622 /* Base hash table entry structure. */
3623 struct bfd_hash_entry root;
3624
ad8e1ba5
AM
3625 enum ppc_stub_type stub_type;
3626
721956f4
AM
3627 /* The stub section. */
3628 asection *stub_sec;
3629
3630 /* Offset within stub_sec of the beginning of this stub. */
3631 bfd_vma stub_offset;
3632
3633 /* Given the symbol's value and its section we can determine its final
3634 value when building the stubs (so the stub knows where to jump. */
3635 bfd_vma target_value;
3636 asection *target_section;
3637
721956f4
AM
3638 /* The symbol table entry, if any, that this was derived from. */
3639 struct ppc_link_hash_entry *h;
e054468f 3640 struct plt_entry *plt_ent;
721956f4 3641
411e1bfb
AM
3642 /* And the reloc addend that this was derived from. */
3643 bfd_vma addend;
3644
721956f4
AM
3645 /* Where this stub is being called from, or, in the case of combined
3646 stub sections, the first input section in the group. */
3647 asection *id_sec;
3648};
3649
3650struct ppc_branch_hash_entry {
3651
3652 /* Base hash table entry structure. */
3653 struct bfd_hash_entry root;
3654
c456f082 3655 /* Offset within branch lookup table. */
721956f4
AM
3656 unsigned int offset;
3657
3658 /* Generation marker. */
3659 unsigned int iter;
3660};
65f38f15
AM
3661
3662struct ppc_link_hash_entry
3663{
3664 struct elf_link_hash_entry elf;
3665
b3fac117
AM
3666 union {
3667 /* A pointer to the most recently used stub hash entry against this
3668 symbol. */
3669 struct ppc_stub_hash_entry *stub_cache;
3670
3671 /* A pointer to the next symbol starting with a '.' */
3672 struct ppc_link_hash_entry *next_dot_sym;
3673 } u;
721956f4 3674
65f38f15
AM
3675 /* Track dynamic relocs copied for this symbol. */
3676 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3677
721956f4 3678 /* Link between function code and descriptor symbols. */
34814b9f 3679 struct ppc_link_hash_entry *oh;
721956f4 3680
e86ce104
AM
3681 /* Flag function code and descriptor symbols. */
3682 unsigned int is_func:1;
3683 unsigned int is_func_descriptor:1;
908b32fc 3684 unsigned int fake:1;
411e1bfb 3685
c5614fa4
AM
3686 /* Whether global opd/toc sym has been adjusted or not.
3687 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3688 should be set for all globals defined in any opd/toc section. */
754021d0
AM
3689 unsigned int adjust_done:1;
3690
99877b66
AM
3691 /* Set if we twiddled this symbol to weak at some stage. */
3692 unsigned int was_undefined:1;
3693
411e1bfb 3694 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM
3695 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3696 corresponding relocs are encountered during check_relocs.
3697 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3698 indicate the corresponding GOT entry type is not needed.
3699 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3700 a TPREL one. We use a separate flag rather than setting TPREL
3701 just for convenience in distinguishing the two cases. */
3702#define TLS_GD 1 /* GD reloc. */
3703#define TLS_LD 2 /* LD reloc. */
3704#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3705#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3706#define TLS_TLS 16 /* Any TLS reloc. */
3707#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3708#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3709#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3710 unsigned char tls_mask;
65f38f15
AM
3711};
3712
3713/* ppc64 ELF linker hash table. */
3714
3715struct ppc_link_hash_table
3716{
3717 struct elf_link_hash_table elf;
3718
721956f4
AM
3719 /* The stub hash table. */
3720 struct bfd_hash_table stub_hash_table;
3721
3722 /* Another hash table for plt_branch stubs. */
3723 struct bfd_hash_table branch_hash_table;
3724
3725 /* Linker stub bfd. */
3726 bfd *stub_bfd;
3727
3728 /* Linker call-backs. */
4ce794b7
AM
3729 asection * (*add_stub_section) (const char *, asection *);
3730 void (*layout_sections_again) (void);
721956f4
AM
3731
3732 /* Array to keep track of which stub sections have been created, and
3733 information on stub grouping. */
3734 struct map_stub {
3735 /* This is the section to which stubs in the group will be attached. */
3736 asection *link_sec;
3737 /* The stub section. */
3738 asection *stub_sec;
ad8e1ba5
AM
3739 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3740 bfd_vma toc_off;
721956f4
AM
3741 } *stub_group;
3742
ad8e1ba5
AM
3743 /* Temp used when calculating TOC pointers. */
3744 bfd_vma toc_curr;
bf102f86
AM
3745 bfd *toc_bfd;
3746 asection *toc_first_sec;
ad8e1ba5 3747
8f3bab57
AM
3748 /* Highest input section id. */
3749 int top_id;
3750
734b6cf9
AM
3751 /* Highest output section index. */
3752 int top_index;
3753
b3fac117
AM
3754 /* Used when adding symbols. */
3755 struct ppc_link_hash_entry *dot_syms;
3756
734b6cf9
AM
3757 /* List of input sections for each output section. */
3758 asection **input_list;
721956f4 3759
65f38f15 3760 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3761 asection *got;
4ce794b7
AM
3762 asection *plt;
3763 asection *relplt;
e054468f
AM
3764 asection *iplt;
3765 asection *reliplt;
4ce794b7
AM
3766 asection *dynbss;
3767 asection *relbss;
3768 asection *glink;
82bd7b59 3769 asection *sfpr;
4ce794b7
AM
3770 asection *brlt;
3771 asection *relbrlt;
ec338859 3772
8387904d
AM
3773 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3774 struct ppc_link_hash_entry *tls_get_addr;
3775 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3776
927be08e
AM
3777 /* The size of reliplt used by got entry relocs. */
3778 bfd_size_type got_reli_size;
3779
9b5ecbd0
AM
3780 /* Statistics. */
3781 unsigned long stub_count[ppc_stub_plt_call];
3782
ee75fd95
AM
3783 /* Number of stubs against global syms. */
3784 unsigned long stub_globals;
3785
ad8e1ba5 3786 /* Set if we should emit symbols for stubs. */
99877b66 3787 unsigned int emit_stub_syms:1;
ad8e1ba5 3788
a7f2871e
AM
3789 /* Set if __tls_get_addr optimization should not be done. */
3790 unsigned int no_tls_get_addr_opt:1;
3791
4c52953f 3792 /* Support for multiple toc sections. */
33c0ec9d 3793 unsigned int do_multi_toc:1;
4c52953f 3794 unsigned int multi_toc_needed:1;
927be08e 3795 unsigned int second_toc_pass:1;
67f0cbdb 3796 unsigned int do_toc_opt:1;
4c52953f 3797
5d1634d7 3798 /* Set on error. */
99877b66 3799 unsigned int stub_error:1;
721956f4 3800
7d9616d7 3801 /* Temp used by ppc64_elf_process_dot_syms. */
99877b66 3802 unsigned int twiddled_syms:1;
721956f4
AM
3803
3804 /* Incremented every time we size stubs. */
3805 unsigned int stub_iteration;
5d1634d7 3806
87d72d41
AM
3807 /* Small local sym cache. */
3808 struct sym_cache sym_cache;
65f38f15
AM
3809};
3810
4c52953f
AM
3811/* Rename some of the generic section flags to better document how they
3812 are used here. */
b0dddeec
AM
3813
3814/* Nonzero if this section has TLS related relocations. */
3815#define has_tls_reloc sec_flg0
3816
3817/* Nonzero if this section has a call to __tls_get_addr. */
3818#define has_tls_get_addr_call sec_flg1
3819
3820/* Nonzero if this section has any toc or got relocs. */
3821#define has_toc_reloc sec_flg2
3822
3823/* Nonzero if this section has a call to another section that uses
3824 the toc or got. */
d77c8a4b 3825#define makes_toc_func_call sec_flg3
b0dddeec
AM
3826
3827/* Recursion protection when determining above flag. */
d77c8a4b 3828#define call_check_in_progress sec_flg4
70cc837d 3829#define call_check_done sec_flg5
4c52953f 3830
65f38f15
AM
3831/* Get the ppc64 ELF linker hash table from a link_info structure. */
3832
3833#define ppc_hash_table(p) \
4dfe6ac6
NC
3834 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3835 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 3836
721956f4
AM
3837#define ppc_stub_hash_lookup(table, string, create, copy) \
3838 ((struct ppc_stub_hash_entry *) \
3839 bfd_hash_lookup ((table), (string), (create), (copy)))
3840
3841#define ppc_branch_hash_lookup(table, string, create, copy) \
3842 ((struct ppc_branch_hash_entry *) \
3843 bfd_hash_lookup ((table), (string), (create), (copy)))
3844
3845/* Create an entry in the stub hash table. */
3846
3847static struct bfd_hash_entry *
4ce794b7
AM
3848stub_hash_newfunc (struct bfd_hash_entry *entry,
3849 struct bfd_hash_table *table,
3850 const char *string)
721956f4
AM
3851{
3852 /* Allocate the structure if it has not already been allocated by a
3853 subclass. */
3854 if (entry == NULL)
3855 {
3856 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3857 if (entry == NULL)
3858 return entry;
3859 }
3860
3861 /* Call the allocation method of the superclass. */
3862 entry = bfd_hash_newfunc (entry, table, string);
3863 if (entry != NULL)
3864 {
3865 struct ppc_stub_hash_entry *eh;
3866
3867 /* Initialize the local fields. */
3868 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3869 eh->stub_type = ppc_stub_none;
721956f4
AM
3870 eh->stub_sec = NULL;
3871 eh->stub_offset = 0;
3872 eh->target_value = 0;
3873 eh->target_section = NULL;
721956f4
AM
3874 eh->h = NULL;
3875 eh->id_sec = NULL;
3876 }
3877
3878 return entry;
3879}
3880
3881/* Create an entry in the branch hash table. */
3882
3883static struct bfd_hash_entry *
4ce794b7
AM
3884branch_hash_newfunc (struct bfd_hash_entry *entry,
3885 struct bfd_hash_table *table,
3886 const char *string)
721956f4
AM
3887{
3888 /* Allocate the structure if it has not already been allocated by a
3889 subclass. */
3890 if (entry == NULL)
3891 {
3892 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3893 if (entry == NULL)
3894 return entry;
3895 }
3896
3897 /* Call the allocation method of the superclass. */
3898 entry = bfd_hash_newfunc (entry, table, string);
3899 if (entry != NULL)
3900 {
3901 struct ppc_branch_hash_entry *eh;
3902
3903 /* Initialize the local fields. */
3904 eh = (struct ppc_branch_hash_entry *) entry;
3905 eh->offset = 0;
3906 eh->iter = 0;
3907 }
3908
3909 return entry;
3910}
3911
65f38f15
AM
3912/* Create an entry in a ppc64 ELF linker hash table. */
3913
3914static struct bfd_hash_entry *
4ce794b7
AM
3915link_hash_newfunc (struct bfd_hash_entry *entry,
3916 struct bfd_hash_table *table,
3917 const char *string)
65f38f15
AM
3918{
3919 /* Allocate the structure if it has not already been allocated by a
3920 subclass. */
3921 if (entry == NULL)
3922 {
3923 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3924 if (entry == NULL)
3925 return entry;
3926 }
3927
3928 /* Call the allocation method of the superclass. */
3929 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3930 if (entry != NULL)
3931 {
3932 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3933
b3fac117 3934 memset (&eh->u.stub_cache, 0,
908b32fc 3935 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM
3936 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3937
3938 /* When making function calls, old ABI code references function entry
3939 points (dot symbols), while new ABI code references the function
3940 descriptor symbol. We need to make any combination of reference and
3941 definition work together, without breaking archive linking.
3942
3943 For a defined function "foo" and an undefined call to "bar":
3944 An old object defines "foo" and ".foo", references ".bar" (possibly
3945 "bar" too).
3946 A new object defines "foo" and references "bar".
3947
3948 A new object thus has no problem with its undefined symbols being
3949 satisfied by definitions in an old object. On the other hand, the
3950 old object won't have ".bar" satisfied by a new object.
3951
3952 Keep a list of newly added dot-symbols. */
3953
3954 if (string[0] == '.')
3955 {
3956 struct ppc_link_hash_table *htab;
3957
3958 htab = (struct ppc_link_hash_table *) table;
3959 eh->u.next_dot_sym = htab->dot_syms;
3960 htab->dot_syms = eh;
3961 }
65f38f15
AM
3962 }
3963
3964 return entry;
3965}
3966
3967/* Create a ppc64 ELF linker hash table. */
3968
3969static struct bfd_link_hash_table *
4ce794b7 3970ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM
3971{
3972 struct ppc_link_hash_table *htab;
3973 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3974
4ce794b7 3975 htab = bfd_zmalloc (amt);
65f38f15
AM
3976 if (htab == NULL)
3977 return NULL;
3978
66eb6687 3979 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC
3980 sizeof (struct ppc_link_hash_entry),
3981 PPC64_ELF_DATA))
65f38f15 3982 {
e2d34d7d 3983 free (htab);
65f38f15
AM
3984 return NULL;
3985 }
3986
721956f4 3987 /* Init the stub hash table too. */
66eb6687
AM
3988 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3989 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM
3990 return NULL;
3991
3992 /* And the branch hash table. */
66eb6687
AM
3993 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3994 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM
3995 return NULL;
3996
3254fd24
AM
3997 /* Initializing two fields of the union is just cosmetic. We really
3998 only care about glist, but when compiled on a 32-bit host the
3999 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4000 debugger inspection of these fields look nicer. */
a6aa5195
AM
4001 htab->elf.init_got_refcount.refcount = 0;
4002 htab->elf.init_got_refcount.glist = NULL;
4003 htab->elf.init_plt_refcount.refcount = 0;
4004 htab->elf.init_plt_refcount.glist = NULL;
4005 htab->elf.init_got_offset.offset = 0;
4006 htab->elf.init_got_offset.glist = NULL;
4007 htab->elf.init_plt_offset.offset = 0;
4008 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4009
65f38f15
AM
4010 return &htab->elf.root;
4011}
4012
721956f4
AM
4013/* Free the derived linker hash table. */
4014
4015static void
4ce794b7 4016ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM
4017{
4018 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
4019
4020 bfd_hash_table_free (&ret->stub_hash_table);
4021 bfd_hash_table_free (&ret->branch_hash_table);
4022 _bfd_generic_link_hash_table_free (hash);
4023}
4024
e717da7e
AM
4025/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4026
4027void
4028ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4029{
4030 struct ppc_link_hash_table *htab;
4031
4032 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4033
4034/* Always hook our dynamic sections into the first bfd, which is the
4035 linker created stub bfd. This ensures that the GOT header is at
4036 the start of the output TOC section. */
4037 htab = ppc_hash_table (info);
4dfe6ac6
NC
4038 if (htab == NULL)
4039 return;
e717da7e
AM
4040 htab->stub_bfd = abfd;
4041 htab->elf.dynobj = abfd;
4042}
4043
721956f4
AM
4044/* Build a name for an entry in the stub hash table. */
4045
4046static char *
4ce794b7
AM
4047ppc_stub_name (const asection *input_section,
4048 const asection *sym_sec,
4049 const struct ppc_link_hash_entry *h,
4050 const Elf_Internal_Rela *rel)
721956f4
AM
4051{
4052 char *stub_name;
4053 bfd_size_type len;
4054
4055 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4056 offsets from a sym as a branch target? In fact, we could
4057 probably assume the addend is always zero. */
4058 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4059
4060 if (h)
4061 {
4062 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4063 stub_name = bfd_malloc (len);
46de2a7c
AM
4064 if (stub_name == NULL)
4065 return stub_name;
4066
4067 sprintf (stub_name, "%08x.%s+%x",
4068 input_section->id & 0xffffffff,
4069 h->elf.root.root.string,
4070 (int) rel->r_addend & 0xffffffff);
721956f4
AM
4071 }
4072 else
4073 {
ad8e1ba5 4074 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4075 stub_name = bfd_malloc (len);
46de2a7c
AM
4076 if (stub_name == NULL)
4077 return stub_name;
4078
4079 sprintf (stub_name, "%08x.%x:%x+%x",
4080 input_section->id & 0xffffffff,
4081 sym_sec->id & 0xffffffff,
4082 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4083 (int) rel->r_addend & 0xffffffff);
721956f4 4084 }
ee75fd95
AM
4085 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4086 stub_name[len - 2] = 0;
721956f4
AM
4087 return stub_name;
4088}
4089
4090/* Look up an entry in the stub hash. Stub entries are cached because
4091 creating the stub name takes a bit of time. */
4092
4093static struct ppc_stub_hash_entry *
4ce794b7
AM
4094ppc_get_stub_entry (const asection *input_section,
4095 const asection *sym_sec,
039b3fef 4096 struct ppc_link_hash_entry *h,
4ce794b7
AM
4097 const Elf_Internal_Rela *rel,
4098 struct ppc_link_hash_table *htab)
721956f4
AM
4099{
4100 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM
4101 const asection *id_sec;
4102
4103 /* If this input section is part of a group of sections sharing one
4104 stub section, then use the id of the first section in the group.
4105 Stub names need to include a section id, as there may well be
4106 more than one stub used to reach say, printf, and we need to
4107 distinguish between them. */
4108 id_sec = htab->stub_group[input_section->id].link_sec;
4109
b3fac117
AM
4110 if (h != NULL && h->u.stub_cache != NULL
4111 && h->u.stub_cache->h == h
4112 && h->u.stub_cache->id_sec == id_sec)
721956f4 4113 {
b3fac117 4114 stub_entry = h->u.stub_cache;
721956f4
AM
4115 }
4116 else
4117 {
4118 char *stub_name;
4119
4120 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4121 if (stub_name == NULL)
4122 return NULL;
4123
4124 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4125 stub_name, FALSE, FALSE);
721956f4 4126 if (h != NULL)
b3fac117 4127 h->u.stub_cache = stub_entry;
721956f4
AM
4128
4129 free (stub_name);
4130 }
4131
4132 return stub_entry;
4133}
4134
4135/* Add a new stub entry to the stub hash. Not all fields of the new
4136 stub entry are initialised. */
4137
4138static struct ppc_stub_hash_entry *
4ce794b7
AM
4139ppc_add_stub (const char *stub_name,
4140 asection *section,
25f53a85 4141 struct bfd_link_info *info)
721956f4 4142{
25f53a85 4143 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4
AM
4144 asection *link_sec;
4145 asection *stub_sec;
4146 struct ppc_stub_hash_entry *stub_entry;
4147
4148 link_sec = htab->stub_group[section->id].link_sec;
4149 stub_sec = htab->stub_group[section->id].stub_sec;
4150 if (stub_sec == NULL)
4151 {
4152 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4153 if (stub_sec == NULL)
4154 {
d4c88bbb 4155 size_t namelen;
721956f4
AM
4156 bfd_size_type len;
4157 char *s_name;
4158
d4c88bbb
AM
4159 namelen = strlen (link_sec->name);
4160 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM
4161 s_name = bfd_alloc (htab->stub_bfd, len);
4162 if (s_name == NULL)
4163 return NULL;
4164
d4c88bbb
AM
4165 memcpy (s_name, link_sec->name, namelen);
4166 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM
4167 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4168 if (stub_sec == NULL)
4169 return NULL;
4170 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4171 }
4172 htab->stub_group[section->id].stub_sec = stub_sec;
4173 }
4174
4175 /* Enter this entry into the linker stub hash table. */
4176 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4177 TRUE, FALSE);
721956f4
AM
4178 if (stub_entry == NULL)
4179 {
25f53a85
AM
4180 info->callbacks->einfo (_("%B: cannot create stub entry %s\n"),
4181 section->owner, stub_name);
721956f4
AM
4182 return NULL;
4183 }
4184
4185 stub_entry->stub_sec = stub_sec;
4186 stub_entry->stub_offset = 0;
4187 stub_entry->id_sec = link_sec;
4188 return stub_entry;
4189}
4190
82bd7b59
AM
4191/* Create sections for linker generated code. */
4192
b34976b6 4193static bfd_boolean
4ce794b7 4194create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM
4195{
4196 struct ppc_link_hash_table *htab;
4197 flagword flags;
4198
4199 htab = ppc_hash_table (info);
4dfe6ac6
NC
4200 if (htab == NULL)
4201 return FALSE;
82bd7b59
AM
4202
4203 /* Create .sfpr for code to save and restore fp regs. */
4204 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4205 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L
4206 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4207 flags);
82bd7b59 4208 if (htab->sfpr == NULL
82bd7b59 4209 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 4210 return FALSE;
82bd7b59 4211
721956f4 4212 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L
4213 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4214 flags);
4ce794b7 4215 if (htab->glink == NULL
ee4bf8d2 4216 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 4217 return FALSE;
82bd7b59 4218
e054468f
AM
4219 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4220 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4221 if (htab->iplt == NULL
4222 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4223 return FALSE;
4224
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4227 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4228 ".rela.iplt",
4229 flags);
4230 if (htab->reliplt == NULL
4231 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4232 return FALSE;
4233
c456f082 4234 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM
4235 flags = (SEC_ALLOC | SEC_LOAD
4236 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4237 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4238 flags);
4ce794b7 4239 if (htab->brlt == NULL
4ce794b7 4240 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 4241 return FALSE;
721956f4 4242
e4e0193e 4243 if (!info->shared)
c456f082
AM
4244 return TRUE;
4245
e4e0193e
AM
4246 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4247 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4248 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4249 ".rela.branch_lt",
4250 flags);
e054468f 4251 if (htab->relbrlt == NULL
c456f082
AM
4252 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4253 return FALSE;
4254
b34976b6 4255 return TRUE;
82bd7b59
AM
4256}
4257
e717da7e
AM
4258/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4259 not already done. */
65f38f15 4260
b34976b6 4261static bfd_boolean
e717da7e 4262create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4263{
e717da7e
AM
4264 asection *got, *relgot;
4265 flagword flags;
4266 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4267
0c8d6e5c 4268 if (!is_ppc64_elf (abfd))
0ffa91dd 4269 return FALSE;
4dfe6ac6
NC
4270 if (htab == NULL)
4271 return FALSE;
0ffa91dd 4272
4ce794b7 4273 if (!htab->got)
e717da7e
AM
4274 {
4275 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4276 return FALSE;
4277
4278 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4279 if (!htab->got)
4280 abort ();
4281 }
4282
4283 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4284 | SEC_LINKER_CREATED);
4285
c456f082 4286 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4287 if (!got
e717da7e
AM
4288 || !bfd_set_section_alignment (abfd, got, 3))
4289 return FALSE;
65f38f15 4290
c456f082
AM
4291 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4292 flags | SEC_READONLY);
e717da7e 4293 if (!relgot
e717da7e 4294 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4295 return FALSE;
e717da7e
AM
4296
4297 ppc64_elf_tdata (abfd)->got = got;
4298 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4299 return TRUE;
65f38f15 4300}
5bd4f169 4301
82bd7b59 4302/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4303
b34976b6 4304static bfd_boolean
4ce794b7 4305ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4306{
65f38f15 4307 struct ppc_link_hash_table *htab;
5bd4f169 4308
65f38f15 4309 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4310 return FALSE;
65f38f15 4311
e717da7e 4312 htab = ppc_hash_table (info);
4dfe6ac6
NC
4313 if (htab == NULL)
4314 return FALSE;
4315
e717da7e
AM
4316 if (!htab->got)
4317 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM
4318 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4319 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4320 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 4321 if (!info->shared)
4ce794b7 4322 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 4323
e717da7e 4324 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 4325 || (!info->shared && !htab->relbss))
65f38f15
AM
4326 abort ();
4327
b34976b6 4328 return TRUE;
5bd4f169
AM
4329}
4330
b31867b6
AM
4331/* Follow indirect and warning symbol links. */
4332
4333static inline struct bfd_link_hash_entry *
4334follow_link (struct bfd_link_hash_entry *h)
4335{
4336 while (h->type == bfd_link_hash_indirect
4337 || h->type == bfd_link_hash_warning)
4338 h = h->u.i.link;
4339 return h;
4340}
4341
4342static inline struct elf_link_hash_entry *
4343elf_follow_link (struct elf_link_hash_entry *h)
4344{
4345 return (struct elf_link_hash_entry *) follow_link (&h->root);
4346}
4347
4348static inline struct ppc_link_hash_entry *
4349ppc_follow_link (struct ppc_link_hash_entry *h)
4350{
4351 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4352}
4353
40d16e0b
AM
4354/* Merge PLT info on FROM with that on TO. */
4355
4356static void
4357move_plt_plist (struct ppc_link_hash_entry *from,
4358 struct ppc_link_hash_entry *to)
4359{
4360 if (from->elf.plt.plist != NULL)
4361 {
4362 if (to->elf.plt.plist != NULL)
4363 {
4364 struct plt_entry **entp;
4365 struct plt_entry *ent;
4366
4367 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4368 {
4369 struct plt_entry *dent;
4370
4371 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4372 if (dent->addend == ent->addend)
4373 {
4374 dent->plt.refcount += ent->plt.refcount;
4375 *entp = ent->next;
4376 break;
4377 }
4378 if (dent == NULL)
4379 entp = &ent->next;
4380 }
4381 *entp = to->elf.plt.plist;
4382 }
4383
4384 to->elf.plt.plist = from->elf.plt.plist;
4385 from->elf.plt.plist = NULL;
4386 }
4387}
4388
65f38f15
AM
4389/* Copy the extra info we tack onto an elf_link_hash_entry. */
4390
4391static void
fcfa13d2
AM
4392ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4393 struct elf_link_hash_entry *dir,
4394 struct elf_link_hash_entry *ind)
65f38f15
AM
4395{
4396 struct ppc_link_hash_entry *edir, *eind;
4397
4398 edir = (struct ppc_link_hash_entry *) dir;
4399 eind = (struct ppc_link_hash_entry *) ind;
4400
411e1bfb 4401 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4402 if (eind->dyn_relocs != NULL)
65f38f15 4403 {
bbd7ec4a
AM
4404 if (edir->dyn_relocs != NULL)
4405 {
4406 struct ppc_dyn_relocs **pp;
4407 struct ppc_dyn_relocs *p;
4408
fcfa13d2 4409 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
4410 list. Merge any entries against the same section. */
4411 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4412 {
4413 struct ppc_dyn_relocs *q;
4414
4415 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4416 if (q->sec == p->sec)
4417 {
4418 q->pc_count += p->pc_count;
4419 q->count += p->count;
4420 *pp = p->next;
4421 break;
4422 }
4423 if (q == NULL)
4424 pp = &p->next;
4425 }
4426 *pp = edir->dyn_relocs;
4427 }
4428
65f38f15
AM
4429 edir->dyn_relocs = eind->dyn_relocs;
4430 eind->dyn_relocs = NULL;
4431 }
65f38f15 4432
6349e628
AM
4433 edir->is_func |= eind->is_func;
4434 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4435 edir->tls_mask |= eind->tls_mask;
b31867b6
AM
4436 if (eind->oh != NULL)
4437 edir->oh = ppc_follow_link (eind->oh);
6349e628 4438
81848ca0 4439 /* If called to transfer flags for a weakdef during processing
f5385ebf 4440 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4441 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM
4442 if (!(ELIMINATE_COPY_RELOCS
4443 && eind->elf.root.type != bfd_link_hash_indirect
4444 && edir->elf.dynamic_adjusted))
4445 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4446
f5385ebf
AM
4447 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4448 edir->elf.ref_regular |= eind->elf.ref_regular;
4449 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4450 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM
4451
4452 /* If we were called to copy over info for a weak sym, that's all. */
4453 if (eind->elf.root.type != bfd_link_hash_indirect)
4454 return;
4455
81848ca0
AM
4456 /* Copy over got entries that we may have already seen to the
4457 symbol which just became indirect. */
411e1bfb
AM
4458 if (eind->elf.got.glist != NULL)
4459 {
4460 if (edir->elf.got.glist != NULL)
4461 {
4462 struct got_entry **entp;
4463 struct got_entry *ent;
4464
4465 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4466 {
4467 struct got_entry *dent;
4468
4469 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4470 if (dent->addend == ent->addend
e717da7e 4471 && dent->owner == ent->owner
411e1bfb
AM
4472 && dent->tls_type == ent->tls_type)
4473 {
4474 dent->got.refcount += ent->got.refcount;
4475 *entp = ent->next;
4476 break;
4477 }
4478 if (dent == NULL)
4479 entp = &ent->next;
4480 }
4481 *entp = edir->elf.got.glist;
4482 }
4483
4484 edir->elf.got.glist = eind->elf.got.glist;
4485 eind->elf.got.glist = NULL;
4486 }
4487
4488 /* And plt entries. */
40d16e0b 4489 move_plt_plist (eind, edir);
411e1bfb 4490
fcfa13d2 4491 if (eind->elf.dynindx != -1)
411e1bfb 4492 {
fcfa13d2
AM
4493 if (edir->elf.dynindx != -1)
4494 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4495 edir->elf.dynstr_index);
411e1bfb
AM
4496 edir->elf.dynindx = eind->elf.dynindx;
4497 edir->elf.dynstr_index = eind->elf.dynstr_index;
4498 eind->elf.dynindx = -1;
4499 eind->elf.dynstr_index = 0;
4500 }
411e1bfb
AM
4501}
4502
8387904d
AM
4503/* Find the function descriptor hash entry from the given function code
4504 hash entry FH. Link the entries via their OH fields. */
4505
4506static struct ppc_link_hash_entry *
b31867b6 4507lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM
4508{
4509 struct ppc_link_hash_entry *fdh = fh->oh;
4510
4511 if (fdh == NULL)
4512 {
4513 const char *fd_name = fh->elf.root.root.string + 1;
4514
4515 fdh = (struct ppc_link_hash_entry *)
4516 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM
4517 if (fdh == NULL)
4518 return fdh;
4519
4520 fdh->is_func_descriptor = 1;
4521 fdh->oh = fh;
4522 fh->is_func = 1;
4523 fh->oh = fdh;
8387904d
AM
4524 }
4525
b31867b6 4526 return ppc_follow_link (fdh);
8387904d
AM
4527}
4528
bb700d78
AM
4529/* Make a fake function descriptor sym for the code sym FH. */
4530
4531static struct ppc_link_hash_entry *
4532make_fdh (struct bfd_link_info *info,
908b32fc 4533 struct ppc_link_hash_entry *fh)
bb700d78
AM
4534{
4535 bfd *abfd;
4536 asymbol *newsym;
4537 struct bfd_link_hash_entry *bh;
4538 struct ppc_link_hash_entry *fdh;
4539
4540 abfd = fh->elf.root.u.undef.abfd;
4541 newsym = bfd_make_empty_symbol (abfd);
4542 newsym->name = fh->elf.root.root.string + 1;
4543 newsym->section = bfd_und_section_ptr;
4544 newsym->value = 0;
908b32fc 4545 newsym->flags = BSF_WEAK;
bb700d78
AM
4546
4547 bh = NULL;
4548 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4549 newsym->flags, newsym->section,
4550 newsym->value, NULL, FALSE, FALSE,
4551 &bh))
4552 return NULL;
4553
4554 fdh = (struct ppc_link_hash_entry *) bh;
4555 fdh->elf.non_elf = 0;
908b32fc
AM
4556 fdh->fake = 1;
4557 fdh->is_func_descriptor = 1;
4558 fdh->oh = fh;
4559 fh->is_func = 1;
4560 fh->oh = fdh;
bb700d78
AM
4561 return fdh;
4562}
4563
8387904d
AM
4564/* Fix function descriptor symbols defined in .opd sections to be
4565 function type. */
555cd476
AM
4566
4567static bfd_boolean
c16153ae 4568ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4569 struct bfd_link_info *info,
555cd476 4570 Elf_Internal_Sym *isym,
b3fac117 4571 const char **name ATTRIBUTE_UNUSED,
555cd476
AM
4572 flagword *flags ATTRIBUTE_UNUSED,
4573 asection **sec,
4574 bfd_vma *value ATTRIBUTE_UNUSED)
4575{
f64b2e8d
NC
4576 if ((ibfd->flags & DYNAMIC) == 0
4577 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4578 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4579
e054468f 4580 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c16153ae
L
4581 {
4582 if ((ibfd->flags & DYNAMIC) == 0)
f64b2e8d 4583 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
c16153ae 4584 }
e054468f
AM
4585 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4586 ;
4587 else if (*sec != NULL
70cc837d 4588 && strcmp ((*sec)->name, ".opd") == 0)
555cd476 4589 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4590
555cd476
AM
4591 return TRUE;
4592}
4593
8387904d 4594/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM
4595 inclusion of a new ABI object archive that defines "bar".
4596 NAME is a symbol defined in an archive. Return a symbol in the hash
4597 table that might be satisfied by the archive symbols. */
8387904d
AM
4598
4599static struct elf_link_hash_entry *
4600ppc64_elf_archive_symbol_lookup (bfd *abfd,
4601 struct bfd_link_info *info,
4602 const char *name)
4603{
4604 struct elf_link_hash_entry *h;
4605 char *dot_name;
4606 size_t len;
4607
4608 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM
4609 if (h != NULL
4610 /* Don't return this sym if it is a fake function descriptor
4611 created by add_symbol_adjust. */
4612 && !(h->root.type == bfd_link_hash_undefweak
4613 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM
4614 return h;
4615
4616 if (name[0] == '.')
4617 return h;
4618
4619 len = strlen (name);
4620 dot_name = bfd_alloc (abfd, len + 2);
4621 if (dot_name == NULL)
4622 return (struct elf_link_hash_entry *) 0 - 1;
4623 dot_name[0] = '.';
4624 memcpy (dot_name + 1, name, len + 1);
4625 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4626 bfd_release (abfd, dot_name);
4627 return h;
4628}
4629
4630/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM
4631 new ABI object defines "bar". Well, at least, undefined dot symbols
4632 are made weak. This stops later archive searches from including an
4633 object if we already have a function descriptor definition. It also
35b0ce59
AM
4634 prevents the linker complaining about undefined symbols.
4635 We also check and correct mismatched symbol visibility here. The
4636 most restrictive visibility of the function descriptor and the
4637 function entry symbol is used. */
8387904d
AM
4638
4639static bfd_boolean
b3fac117 4640add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4641{
8387904d
AM
4642 struct ppc_link_hash_table *htab;
4643 struct ppc_link_hash_entry *fdh;
4644
b3fac117 4645 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM
4646 return TRUE;
4647
b3fac117
AM
4648 if (eh->elf.root.type == bfd_link_hash_warning)
4649 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4650
b3fac117
AM
4651 if (eh->elf.root.root.string[0] != '.')
4652 abort ();
8387904d 4653
b3fac117 4654 htab = ppc_hash_table (info);
4dfe6ac6
NC
4655 if (htab == NULL)
4656 return FALSE;
4657
b31867b6
AM
4658 fdh = lookup_fdh (eh, htab);
4659 if (fdh == NULL)
4660 {
4661 if (!info->relocatable
4662 && (eh->elf.root.type == bfd_link_hash_undefined
4663 || eh->elf.root.type == bfd_link_hash_undefweak)
4664 && eh->elf.ref_regular)
4665 {
4666 /* Make an undefweak function descriptor sym, which is enough to
4667 pull in an --as-needed shared lib, but won't cause link
4668 errors. Archives are handled elsewhere. */
4669 fdh = make_fdh (info, eh);
4670 if (fdh == NULL)
4671 return FALSE;
4672 fdh->elf.ref_regular = 1;
4673 }
bb700d78 4674 }
b31867b6 4675 else
8387904d 4676 {
35b0ce59
AM
4677 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4678 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4679 if (entry_vis < descr_vis)
4680 fdh->elf.other += entry_vis - descr_vis;
4681 else if (entry_vis > descr_vis)
4682 eh->elf.other += descr_vis - entry_vis;
4683
e87d886e
AM
4684 if ((fdh->elf.root.type == bfd_link_hash_defined
4685 || fdh->elf.root.type == bfd_link_hash_defweak)
4686 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM
4687 {
4688 eh->elf.root.type = bfd_link_hash_undefweak;
4689 eh->was_undefined = 1;
4690 htab->twiddled_syms = 1;
4691 }
8387904d 4692 }
99877b66 4693
8387904d
AM
4694 return TRUE;
4695}
4696
b3fac117
AM
4697/* Process list of dot-symbols we made in link_hash_newfunc. */
4698
8387904d 4699static bfd_boolean
7d9616d7 4700ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
8387904d 4701{
99877b66 4702 struct ppc_link_hash_table *htab;
b3fac117 4703 struct ppc_link_hash_entry **p, *eh;
433817dd 4704
0c8d6e5c 4705 if (!is_ppc64_elf (info->output_bfd))
35b0ce59 4706 return TRUE;
4dfe6ac6
NC
4707 htab = ppc_hash_table (info);
4708 if (htab == NULL)
4709 return FALSE;
35b0ce59 4710
0c8d6e5c 4711 if (is_ppc64_elf (ibfd))
b3fac117
AM
4712 {
4713 p = &htab->dot_syms;
4714 while ((eh = *p) != NULL)
4715 {
4716 *p = NULL;
4717 if (!add_symbol_adjust (eh, info))
4718 return FALSE;
4719 p = &eh->u.next_dot_sym;
4720 }
4721 }
4722
4723 /* Clear the list for non-ppc64 input files. */
4724 p = &htab->dot_syms;
4725 while ((eh = *p) != NULL)
4726 {
4727 *p = NULL;
4728 p = &eh->u.next_dot_sym;
4729 }
99877b66
AM
4730
4731 /* We need to fix the undefs list for any syms we have twiddled to
4732 undef_weak. */
4733 if (htab->twiddled_syms)
4734 {
77cfaee6 4735 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM
4736 htab->twiddled_syms = 0;
4737 }
b3fac117 4738 return TRUE;
8387904d
AM
4739}
4740
97fed1c9
JJ
4741/* Undo hash table changes when an --as-needed input file is determined
4742 not to be needed. */
4743
4744static bfd_boolean
4745ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4746 struct bfd_link_info *info)
4747{
4dfe6ac6
NC
4748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4749
4750 if (htab == NULL)
4751 return FALSE;
4752
4753 htab->dot_syms = NULL;
97fed1c9
JJ
4754 return TRUE;
4755}
4756
aa374f67
AM
4757/* If --just-symbols against a final linked binary, then assume we need
4758 toc adjusting stubs when calling functions defined there. */
4759
4760static void
4761ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4762{
4763 if ((sec->flags & SEC_CODE) != 0
4764 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4765 && is_ppc64_elf (sec->owner))
4766 {
4767 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4768 if (got != NULL
4769 && got->size >= elf_backend_got_header_size
4770 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4771 sec->has_toc_reloc = 1;
4772 }
4773 _bfd_elf_link_just_syms (sec, info);
4774}
4775
e054468f 4776static struct plt_entry **
4ce794b7
AM
4777update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4778 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM
4779{
4780 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 4781 struct plt_entry **local_plt;
f961d9dd 4782 unsigned char *local_got_tls_masks;
411e1bfb
AM
4783
4784 if (local_got_ents == NULL)
4785 {
4786 bfd_size_type size = symtab_hdr->sh_info;
4787
e054468f
AM
4788 size *= (sizeof (*local_got_ents)
4789 + sizeof (*local_plt)
4790 + sizeof (*local_got_tls_masks));
4ce794b7 4791 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 4792 if (local_got_ents == NULL)
e054468f 4793 return NULL;
411e1bfb
AM
4794 elf_local_got_ents (abfd) = local_got_ents;
4795 }
4796
e054468f 4797 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM
4798 {
4799 struct got_entry *ent;
4800
4801 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM
4802 if (ent->addend == r_addend
4803 && ent->owner == abfd
4804 && ent->tls_type == tls_type)
411e1bfb
AM
4805 break;
4806 if (ent == NULL)
4807 {
4808 bfd_size_type amt = sizeof (*ent);
4ce794b7 4809 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4810 if (ent == NULL)
4811 return FALSE;
4812 ent->next = local_got_ents[r_symndx];
4813 ent->addend = r_addend;
e717da7e 4814 ent->owner = abfd;
411e1bfb 4815 ent->tls_type = tls_type;
927be08e 4816 ent->is_indirect = FALSE;
411e1bfb
AM
4817 ent->got.refcount = 0;
4818 local_got_ents[r_symndx] = ent;
4819 }
4820 ent->got.refcount += 1;
4821 }
4822
e054468f 4823 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 4824 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 4825 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
4826
4827 return local_plt + r_symndx;
65f38f15
AM
4828}
4829
411e1bfb 4830static bfd_boolean
e054468f 4831update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 4832{
411e1bfb 4833 struct plt_entry *ent;
1e2f5b6e 4834
e054468f 4835 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM
4836 if (ent->addend == addend)
4837 break;
4838 if (ent == NULL)
1e2f5b6e 4839 {
411e1bfb 4840 bfd_size_type amt = sizeof (*ent);
4ce794b7 4841 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4842 if (ent == NULL)
4843 return FALSE;
e054468f 4844 ent->next = *plist;
411e1bfb
AM
4845 ent->addend = addend;
4846 ent->plt.refcount = 0;
e054468f 4847 *plist = ent;
1e2f5b6e 4848 }
411e1bfb 4849 ent->plt.refcount += 1;
b34976b6 4850 return TRUE;
1e2f5b6e
AM
4851}
4852
e054468f
AM
4853static bfd_boolean
4854is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4855{
4856 return (r_type == R_PPC64_REL24
4857 || r_type == R_PPC64_REL14
4858 || r_type == R_PPC64_REL14_BRTAKEN
4859 || r_type == R_PPC64_REL14_BRNTAKEN
4860 || r_type == R_PPC64_ADDR24
4861 || r_type == R_PPC64_ADDR14
4862 || r_type == R_PPC64_ADDR14_BRTAKEN
4863 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4864}
4865
5bd4f169 4866/* Look through the relocs for a section during the first phase, and
65f38f15 4867 calculate needed space in the global offset table, procedure
5d1634d7 4868 linkage table, and dynamic reloc sections. */
5bd4f169 4869
b34976b6 4870static bfd_boolean
4ce794b7
AM
4871ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4872 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4873{
65f38f15 4874 struct ppc_link_hash_table *htab;
5bd4f169 4875 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 4876 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
4877 const Elf_Internal_Rela *rel;
4878 const Elf_Internal_Rela *rel_end;
5bd4f169 4879 asection *sreloc;
1e2f5b6e 4880 asection **opd_sym_map;
3a71aa26 4881 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 4882
1049f94e 4883 if (info->relocatable)
b34976b6 4884 return TRUE;
5bd4f169 4885
680a3378
AM
4886 /* Don't do anything special with non-loaded, non-alloced sections.
4887 In particular, any relocs in such sections should not affect GOT
4888 and PLT reference counting (ie. we don't allow them to create GOT
4889 or PLT entries), there's no possibility or desire to optimize TLS
4890 relocs, and there's not much point in propagating relocs to shared
4891 libs that the dynamic linker won't relocate. */
4892 if ((sec->flags & SEC_ALLOC) == 0)
4893 return TRUE;
4894
0c8d6e5c 4895 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4896
65f38f15 4897 htab = ppc_hash_table (info);
4dfe6ac6
NC
4898 if (htab == NULL)
4899 return FALSE;
4900
3a71aa26
AM
4901 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4902 FALSE, FALSE, TRUE);
4903 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4904 FALSE, FALSE, TRUE);
0ffa91dd 4905 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 4906 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 4907 sreloc = NULL;
1e2f5b6e 4908 opd_sym_map = NULL;
70cc837d 4909 if (strcmp (sec->name, ".opd") == 0)
1e2f5b6e
AM
4910 {
4911 /* Garbage collection needs some extra help with .opd sections.
4912 We don't want to necessarily keep everything referenced by
4913 relocs in .opd, as that would keep all functions. Instead,
4914 if we reference an .opd symbol (a function descriptor), we
4915 want to keep the function code symbol's section. This is
4916 easy for global symbols, but for local syms we need to keep
74f0fb50 4917 information about the associated function section. */
1e2f5b6e
AM
4918 bfd_size_type amt;
4919
74f0fb50 4920 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4921 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4922 if (opd_sym_map == NULL)
b34976b6 4923 return FALSE;
74f0fb50 4924 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM
4925 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4926 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4927 }
5bd4f169 4928
82bd7b59
AM
4929 if (htab->sfpr == NULL
4930 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4931 return FALSE;
82bd7b59 4932
5bd4f169
AM
4933 rel_end = relocs + sec->reloc_count;
4934 for (rel = relocs; rel < rel_end; rel++)
4935 {
4936 unsigned long r_symndx;
4937 struct elf_link_hash_entry *h;
04c9666a 4938 enum elf_ppc64_reloc_type r_type;
727fc41e 4939 int tls_type;
7c8fe5c4 4940 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 4941 struct plt_entry **ifunc;
5bd4f169
AM
4942
4943 r_symndx = ELF64_R_SYM (rel->r_info);
4944 if (r_symndx < symtab_hdr->sh_info)
4945 h = NULL;
4946 else
973a3492
L
4947 {
4948 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 4949 h = elf_follow_link (h);
973a3492 4950 }
5bd4f169 4951
727fc41e 4952 tls_type = 0;
e054468f 4953 ifunc = NULL;
25f23106
AM
4954 if (h != NULL)
4955 {
4956 if (h->type == STT_GNU_IFUNC)
4957 {
4958 h->needs_plt = 1;
4959 ifunc = &h->plt.plist;
4960 }
4961 }
4962 else
4963 {
4964 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4965 abfd, r_symndx);
4966 if (isym == NULL)
4967 return FALSE;
4968
4969 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4970 {
4971 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4972 rel->r_addend, PLT_IFUNC);
4973 if (ifunc == NULL)
4974 return FALSE;
4975 }
4976 }
4ce794b7 4977 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM
4978 if (is_branch_reloc (r_type))
4979 {
4980 if (h != NULL && (h == tga || h == dottga))
4981 {
4982 if (rel != relocs
4983 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4984 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4985 /* We have a new-style __tls_get_addr call with a marker
4986 reloc. */
4987 ;
4988 else
4989 /* Mark this section as having an old-style call. */
4990 sec->has_tls_get_addr_call = 1;
4991 }
727fc41e 4992
e054468f 4993 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM
4994 if (ifunc != NULL
4995 && !update_plt_info (abfd, ifunc, rel->r_addend))
4996 return FALSE;
4997 }
727fc41e 4998
a33d1f77 4999 switch (r_type)
5bd4f169 5000 {
727fc41e
AM
5001 case R_PPC64_TLSGD:
5002 case R_PPC64_TLSLD:
5003 /* These special tls relocs tie a call to __tls_get_addr with
5004 its parameter symbol. */
5005 break;
5006
411e1bfb
AM
5007 case R_PPC64_GOT_TLSLD16:
5008 case R_PPC64_GOT_TLSLD16_LO:
5009 case R_PPC64_GOT_TLSLD16_HI:
5010 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5011 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5012 goto dogottls;
5013
5014 case R_PPC64_GOT_TLSGD16:
5015 case R_PPC64_GOT_TLSGD16_LO:
5016 case R_PPC64_GOT_TLSGD16_HI:
5017 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5018 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5019 goto dogottls;
5020
5021 case R_PPC64_GOT_TPREL16_DS:
5022 case R_PPC64_GOT_TPREL16_LO_DS:
5023 case R_PPC64_GOT_TPREL16_HI:
5024 case R_PPC64_GOT_TPREL16_HA:
1d483afe 5025 if (!info->executable)
411e1bfb
AM
5026 info->flags |= DF_STATIC_TLS;
5027 tls_type = TLS_TLS | TLS_TPREL;
5028 goto dogottls;
5029
5030 case R_PPC64_GOT_DTPREL16_DS:
5031 case R_PPC64_GOT_DTPREL16_LO_DS:
5032 case R_PPC64_GOT_DTPREL16_HI:
5033 case R_PPC64_GOT_DTPREL16_HA:
5034 tls_type = TLS_TLS | TLS_DTPREL;
5035 dogottls:
5036 sec->has_tls_reloc = 1;
5037 /* Fall thru */
5038
5bd4f169 5039 case R_PPC64_GOT16:
5bd4f169 5040 case R_PPC64_GOT16_DS:
65f38f15
AM
5041 case R_PPC64_GOT16_HA:
5042 case R_PPC64_GOT16_HI:
5043 case R_PPC64_GOT16_LO:
5bd4f169 5044 case R_PPC64_GOT16_LO_DS:
65f38f15 5045 /* This symbol requires a global offset table entry. */
4c52953f 5046 sec->has_toc_reloc = 1;
33c0ec9d
AM
5047 if (r_type == R_PPC64_GOT_TLSLD16
5048 || r_type == R_PPC64_GOT_TLSGD16
5049 || r_type == R_PPC64_GOT_TPREL16_DS
5050 || r_type == R_PPC64_GOT_DTPREL16_DS
5051 || r_type == R_PPC64_GOT16
5052 || r_type == R_PPC64_GOT16_DS)
5053 {
5054 htab->do_multi_toc = 1;
d77c8a4b 5055 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM
5056 }
5057
e717da7e
AM
5058 if (ppc64_elf_tdata (abfd)->got == NULL
5059 && !create_got_section (abfd, info))
b34976b6 5060 return FALSE;
5bd4f169
AM
5061
5062 if (h != NULL)
5063 {
411e1bfb
AM
5064 struct ppc_link_hash_entry *eh;
5065 struct got_entry *ent;
65f38f15 5066
411e1bfb
AM
5067 eh = (struct ppc_link_hash_entry *) h;
5068 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5069 if (ent->addend == rel->r_addend
e717da7e 5070 && ent->owner == abfd
411e1bfb
AM
5071 && ent->tls_type == tls_type)
5072 break;
5073 if (ent == NULL)
5bd4f169 5074 {
411e1bfb 5075 bfd_size_type amt = sizeof (*ent);
4ce794b7 5076 ent = bfd_alloc (abfd, amt);
411e1bfb 5077 if (ent == NULL)
b34976b6 5078 return FALSE;
411e1bfb
AM
5079 ent->next = eh->elf.got.glist;
5080 ent->addend = rel->r_addend;
e717da7e 5081 ent->owner = abfd;
411e1bfb 5082 ent->tls_type = tls_type;
927be08e 5083 ent->is_indirect = FALSE;
411e1bfb
AM
5084 ent->got.refcount = 0;
5085 eh->elf.got.glist = ent;
5bd4f169 5086 }
411e1bfb 5087 ent->got.refcount += 1;
e7b938ca 5088 eh->tls_mask |= tls_type;
5bd4f169 5089 }
411e1bfb
AM
5090 else
5091 /* This is a global offset table entry for a local symbol. */
5092 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5093 rel->r_addend, tls_type))
5094 return FALSE;
5bd4f169
AM
5095 break;
5096
5bd4f169 5097 case R_PPC64_PLT16_HA:
65f38f15
AM
5098 case R_PPC64_PLT16_HI:
5099 case R_PPC64_PLT16_LO:
5100 case R_PPC64_PLT32:
5101 case R_PPC64_PLT64:
5bd4f169 5102 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM
5103 actually build the entry in adjust_dynamic_symbol,
5104 because this might be a case of linking PIC code without
5105 linking in any dynamic objects, in which case we don't
5106 need to generate a procedure linkage table after all. */
5bd4f169
AM
5107 if (h == NULL)
5108 {
5109 /* It does not make sense to have a procedure linkage
3fad3c7c 5110 table entry for a local symbol. */
5bd4f169 5111 bfd_set_error (bfd_error_bad_value);
b34976b6 5112 return FALSE;
5bd4f169 5113 }
411e1bfb 5114 else
e054468f
AM
5115 {
5116 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5117 return FALSE;
5118 h->needs_plt = 1;
5119 if (h->root.root.string[0] == '.'
5120 && h->root.root.string[1] != '\0')
5121 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5122 }
5bd4f169
AM
5123 break;
5124
5125 /* The following relocations don't need to propagate the
5126 relocation if linking a shared object since they are
5127 section relative. */
5128 case R_PPC64_SECTOFF:
5129 case R_PPC64_SECTOFF_LO:
5130 case R_PPC64_SECTOFF_HI:
5131 case R_PPC64_SECTOFF_HA:
5132 case R_PPC64_SECTOFF_DS:
5133 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM
5134 case R_PPC64_DTPREL16:
5135 case R_PPC64_DTPREL16_LO:
5136 case R_PPC64_DTPREL16_HI:
5137 case R_PPC64_DTPREL16_HA:
5138 case R_PPC64_DTPREL16_DS:
5139 case R_PPC64_DTPREL16_LO_DS:
5140 case R_PPC64_DTPREL16_HIGHER:
5141 case R_PPC64_DTPREL16_HIGHERA:
5142 case R_PPC64_DTPREL16_HIGHEST:
5143 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM
5144 break;
5145
ad8e1ba5 5146 /* Nor do these. */
25f23106
AM
5147 case R_PPC64_REL16:
5148 case R_PPC64_REL16_LO:
5149 case R_PPC64_REL16_HI:
5150 case R_PPC64_REL16_HA:
5151 break;
5152
ad8e1ba5 5153 case R_PPC64_TOC16:
33c0ec9d
AM
5154 case R_PPC64_TOC16_DS:
5155 htab->do_multi_toc = 1;
d77c8a4b 5156 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM
5157 case R_PPC64_TOC16_LO:
5158 case R_PPC64_TOC16_HI:
5159 case R_PPC64_TOC16_HA:
ad8e1ba5 5160 case R_PPC64_TOC16_LO_DS:
4c52953f 5161 sec->has_toc_reloc = 1;
ad8e1ba5
AM
5162 break;
5163
5bd4f169
AM
5164 /* This relocation describes the C++ object vtable hierarchy.
5165 Reconstruct it for later use during GC. */
5166 case R_PPC64_GNU_VTINHERIT:
c152c796 5167 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5168 return FALSE;
5bd4f169
AM
5169 break;
5170
5171 /* This relocation describes which C++ vtable entries are actually
5172 used. Record for later use during GC. */
5173 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB
5174 BFD_ASSERT (h != NULL);
5175 if (h != NULL
5176 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5177 return FALSE;
5bd4f169
AM
5178 break;
5179
721956f4
AM
5180 case R_PPC64_REL14:
5181 case R_PPC64_REL14_BRTAKEN:
5182 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM
5183 {
5184 asection *dest = NULL;
5185
5186 /* Heuristic: If jumping outside our section, chances are
5187 we are going to need a stub. */
5188 if (h != NULL)
5189 {
5190 /* If the sym is weak it may be overridden later, so
5191 don't assume we know where a weak sym lives. */
5192 if (h->root.type == bfd_link_hash_defined)
5193 dest = h->root.u.def.section;
5194 }
5195 else
87d72d41
AM
5196 {
5197 Elf_Internal_Sym *isym;
5198
5199 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5200 abfd, r_symndx);
5201 if (isym == NULL)
5202 return FALSE;
5203
5204 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5205 }
5206
220c76dd 5207 if (dest != sec)
7c8fe5c4 5208 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5209 }
721956f4
AM
5210 /* Fall through. */
5211
5d1634d7 5212 case R_PPC64_REL24:
e054468f 5213 if (h != NULL && ifunc == NULL)
5d1634d7
AM
5214 {
5215 /* We may need a .plt entry if the function this reloc
5216 refers to is in a shared lib. */
e054468f 5217 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5218 return FALSE;
e054468f
AM
5219 h->needs_plt = 1;
5220 if (h->root.root.string[0] == '.'
5221 && h->root.root.string[1] != '\0')
5222 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5223 if (h == tga || h == dottga)
411e1bfb 5224 sec->has_tls_reloc = 1;
411e1bfb
AM
5225 }
5226 break;
5227
5228 case R_PPC64_TPREL64:
5229 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
1d483afe 5230 if (!info->executable)
411e1bfb
AM
5231 info->flags |= DF_STATIC_TLS;
5232 goto dotlstoc;
5233
5234 case R_PPC64_DTPMOD64:
5235 if (rel + 1 < rel_end
5236 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5237 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5238 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5239 else
951fd09b 5240 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM
5241 goto dotlstoc;
5242
5243 case R_PPC64_DTPREL64:
5244 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5245 if (rel != relocs
5246 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5247 && rel[-1].r_offset == rel->r_offset - 8)
5248 /* This is the second reloc of a dtpmod, dtprel pair.
5249 Don't mark with TLS_DTPREL. */
5250 goto dodyn;
5251
5252 dotlstoc:
5253 sec->has_tls_reloc = 1;
5254 if (h != NULL)
5255 {
5256 struct ppc_link_hash_entry *eh;
5257 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5258 eh->tls_mask |= tls_type;
411e1bfb
AM
5259 }
5260 else
5261 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5262 rel->r_addend, tls_type))
5263 return FALSE;
5264
7c8fe5c4
AM
5265 ppc64_sec = ppc64_elf_section_data (sec);
5266 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5267 {
3a71aa26
AM
5268 bfd_size_type amt;
5269
e7b938ca 5270 /* One extra to simplify get_tls_mask. */
3a71aa26
AM
5271 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5272 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5273 if (ppc64_sec->u.toc.symndx == NULL)
5274 return FALSE;
5275 amt = sec->size * sizeof (bfd_vma) / 8;
5276 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5277 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5278 return FALSE;
7c8fe5c4
AM
5279 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5280 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM
5281 }
5282 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM
5283 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5284 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM
5285
5286 /* Mark the second slot of a GD or LD entry.
5287 -1 to indicate GD and -2 to indicate LD. */
5288 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5289 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5290 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5291 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM
5292 goto dodyn;
5293
5294 case R_PPC64_TPREL16:
5295 case R_PPC64_TPREL16_LO:
5296 case R_PPC64_TPREL16_HI:
5297 case R_PPC64_TPREL16_HA:
5298 case R_PPC64_TPREL16_DS:
5299 case R_PPC64_TPREL16_LO_DS:
5300 case R_PPC64_TPREL16_HIGHER:
5301 case R_PPC64_TPREL16_HIGHERA:
5302 case R_PPC64_TPREL16_HIGHEST:
5303 case R_PPC64_TPREL16_HIGHESTA:
5304 if (info->shared)
5305 {
1d483afe
AM
5306 if (!info->executable)
5307 info->flags |= DF_STATIC_TLS;
411e1bfb 5308 goto dodyn;
5d1634d7
AM
5309 }
5310 break;
5311
e86ce104 5312 case R_PPC64_ADDR64:
1e2f5b6e 5313 if (opd_sym_map != NULL
1e2f5b6e 5314 && rel + 1 < rel_end
4ce794b7 5315 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5316 {
8387904d
AM
5317 if (h != NULL)
5318 {
5319 if (h->root.root.string[0] == '.'
5320 && h->root.root.string[1] != 0
b31867b6 5321 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM
5322 ;
5323 else
5324 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5325 }
5326 else
5327 {
5328 asection *s;
87d72d41 5329 Elf_Internal_Sym *isym;
1e2f5b6e 5330
87d72d41
AM
5331 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5332 abfd, r_symndx);
5333 if (isym == NULL)
8387904d 5334 return FALSE;
87d72d41
AM
5335
5336 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5337 if (s != NULL && s != sec)
3f764659 5338 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5339 }
1e2f5b6e 5340 }
e86ce104
AM
5341 /* Fall through. */
5342
04c9666a 5343 case R_PPC64_REL30:
5bd4f169 5344 case R_PPC64_REL32:
04c9666a 5345 case R_PPC64_REL64:
65f38f15
AM
5346 case R_PPC64_ADDR14:
5347 case R_PPC64_ADDR14_BRNTAKEN:
5348 case R_PPC64_ADDR14_BRTAKEN:
5349 case R_PPC64_ADDR16:
5350 case R_PPC64_ADDR16_DS:
5351 case R_PPC64_ADDR16_HA:
5352 case R_PPC64_ADDR16_HI:
5353 case R_PPC64_ADDR16_HIGHER:
5354 case R_PPC64_ADDR16_HIGHERA:
5355 case R_PPC64_ADDR16_HIGHEST:
5356 case R_PPC64_ADDR16_HIGHESTA:
5357 case R_PPC64_ADDR16_LO:
5358 case R_PPC64_ADDR16_LO_DS:
5359 case R_PPC64_ADDR24:
65f38f15 5360 case R_PPC64_ADDR32:
65f38f15
AM
5361 case R_PPC64_UADDR16:
5362 case R_PPC64_UADDR32:
5363 case R_PPC64_UADDR64:
5bd4f169 5364 case R_PPC64_TOC:
81848ca0
AM
5365 if (h != NULL && !info->shared)
5366 /* We may need a copy reloc. */
f5385ebf 5367 h->non_got_ref = 1;
81848ca0 5368
41bd81ab 5369 /* Don't propagate .opd relocs. */
1e2f5b6e 5370 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5371 break;
e86ce104 5372
65f38f15
AM
5373 /* If we are creating a shared library, and this is a reloc
5374 against a global symbol, or a non PC relative reloc
5375 against a local symbol, then we need to copy the reloc
5376 into the shared library. However, if we are linking with
5377 -Bsymbolic, we do not need to copy a reloc against a
5378 global symbol which is defined in an object we are
5379 including in the link (i.e., DEF_REGULAR is set). At
5380 this point we have not seen all the input files, so it is
5381 possible that DEF_REGULAR is not set now but will be set
5382 later (it is never cleared). In case of a weak definition,
5383 DEF_REGULAR may be cleared later by a strong definition in
5384 a shared library. We account for that possibility below by
f4656909 5385 storing information in the dyn_relocs field of the hash
65f38f15
AM
5386 table entry. A similar situation occurs when creating
5387 shared libraries and symbol visibility changes render the
5388 symbol local.
5389
5390 If on the other hand, we are creating an executable, we
5391 may need to keep relocations for symbols satisfied by a
5392 dynamic library if we manage to avoid copy relocs for the
5393 symbol. */
411e1bfb 5394 dodyn:
65f38f15 5395 if ((info->shared
1d483afe 5396 && (must_be_dyn_reloc (info, r_type)
65f38f15
AM
5397 || (h != NULL
5398 && (! info->symbolic
5399 || h->root.type == bfd_link_hash_defweak
f5385ebf 5400 || !h->def_regular))))
f4656909
AM
5401 || (ELIMINATE_COPY_RELOCS
5402 && !info->shared
65f38f15
AM
5403 && h != NULL
5404 && (h->root.type == bfd_link_hash_defweak
25f23106
AM
5405 || !h->def_regular))
5406 || (!info->shared
5407 && ifunc != NULL))
5bd4f169 5408 {
ec338859
AM
5409 struct ppc_dyn_relocs *p;
5410 struct ppc_dyn_relocs **head;
5411
65f38f15
AM
5412 /* We must copy these reloc types into the output file.
5413 Create a reloc section in dynobj and make room for
5414 this reloc. */
5bd4f169
AM
5415 if (sreloc == NULL)
5416 {
83bac4b0
NC
5417 sreloc = _bfd_elf_make_dynamic_reloc_section
5418 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5419
5bd4f169 5420 if (sreloc == NULL)
83bac4b0 5421 return FALSE;
5bd4f169
AM
5422 }
5423
65f38f15
AM
5424 /* If this is a global symbol, we count the number of
5425 relocations we need for this symbol. */
5426 if (h != NULL)
5427 {
ec338859 5428 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM
5429 }
5430 else
5431 {
ec338859
AM
5432 /* Track dynamic relocs needed for local syms too.
5433 We really need local syms available to do this
5434 easily. Oh well. */
ec338859 5435 asection *s;
6edfbbad 5436 void *vpp;
87d72d41 5437 Elf_Internal_Sym *isym;
6edfbbad 5438
87d72d41
AM
5439 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5440 abfd, r_symndx);
5441 if (isym == NULL)
b34976b6 5442 return FALSE;
ec338859 5443
87d72d41
AM
5444 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5445 if (s == NULL)
5446 s = sec;
5447
6edfbbad
DJ
5448 vpp = &elf_section_data (s)->local_dynrel;
5449 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 5450 }
ec338859
AM
5451
5452 p = *head;
5453 if (p == NULL || p->sec != sec)
5454 {
4ce794b7 5455 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 5456 if (p == NULL)
b34976b6 5457 return FALSE;
ec338859
AM
5458 p->next = *head;
5459 *head = p;
5460 p->sec = sec;
5461 p->count = 0;
5462 p->pc_count = 0;
5463 }
5464
5465 p->count += 1;
1d483afe 5466 if (!must_be_dyn_reloc (info, r_type))
ec338859 5467 p->pc_count += 1;
65f38f15 5468 }
5bd4f169 5469 break;
65f38f15
AM
5470
5471 default:
96e0dda4 5472 break;
5bd4f169
AM
5473 }
5474 }
5475
b34976b6 5476 return TRUE;
5bd4f169
AM
5477}
5478
8387904d
AM
5479/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5480 of the code entry point, and its section. */
5481
5482static bfd_vma
5483opd_entry_value (asection *opd_sec,
5484 bfd_vma offset,
5485 asection **code_sec,
5486 bfd_vma *code_off)
5487{
5488 bfd *opd_bfd = opd_sec->owner;
8860955f 5489 Elf_Internal_Rela *relocs;
8387904d 5490 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5491 bfd_vma val;
8387904d 5492
4b85d634
AM
5493 /* No relocs implies we are linking a --just-symbols object. */
5494 if (opd_sec->reloc_count == 0)
5495 {
aa374f67
AM
5496 char buf[8];
5497
5498 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
4b85d634 5499 return (bfd_vma) -1;
3b36f7e6 5500
aa374f67 5501 val = bfd_get_64 (opd_bfd, buf);
4b85d634
AM
5502 if (code_sec != NULL)
5503 {
5504 asection *sec, *likely = NULL;
5505 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5506 if (sec->vma <= val
5507 && (sec->flags & SEC_LOAD) != 0
5508 && (sec->flags & SEC_ALLOC) != 0)
5509 likely = sec;
5510 if (likely != NULL)
5511 {
5512 *code_sec = likely;
5513 if (code_off != NULL)
5514 *code_off = val - likely->vma;
5515 }
5516 }
5517 return val;
5518 }
5519
0c8d6e5c 5520 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5521
8860955f
AM
5522 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5523 if (relocs == NULL)
5524 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5525
8387904d 5526 /* Go find the opd reloc at the sym address. */
8860955f 5527 lo = relocs;
8387904d
AM
5528 BFD_ASSERT (lo != NULL);
5529 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5530 val = (bfd_vma) -1;
8387904d
AM
5531 while (lo < hi)
5532 {
5533 look = lo + (hi - lo) / 2;
5534 if (look->r_offset < offset)
5535 lo = look + 1;
5536 else if (look->r_offset > offset)
5537 hi = look;
5538 else
5539 {
0ffa91dd
NC
5540 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5541
8387904d
AM
5542 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5543 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5544 {
5545 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM
5546 asection *sec;
5547
5548 if (symndx < symtab_hdr->sh_info)
5549 {
5550 Elf_Internal_Sym *sym;
5551
5552 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5553 if (sym == NULL)
5554 {
5555 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5556 symtab_hdr->sh_info,
5557 0, NULL, NULL, NULL);
5558 if (sym == NULL)
645ea6a9 5559 break;
8387904d
AM
5560 symtab_hdr->contents = (bfd_byte *) sym;
5561 }
5562
5563 sym += symndx;
5564 val = sym->st_value;
cb33740c 5565 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM
5566 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5567 }
5568 else
5569 {
5570 struct elf_link_hash_entry **sym_hashes;
5571 struct elf_link_hash_entry *rh;
5572
5573 sym_hashes = elf_sym_hashes (opd_bfd);
5574 rh = sym_hashes[symndx - symtab_hdr->sh_info];
b31867b6 5575 rh = elf_follow_link (rh);
8387904d
AM
5576 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5577 || rh->root.type == bfd_link_hash_defweak);
5578 val = rh->root.u.def.value;
5579 sec = rh->root.u.def.section;
5580 }
5581 val += look->r_addend;
5582 if (code_off != NULL)
5583 *code_off = val;
5584 if (code_sec != NULL)
5585 *code_sec = sec;
5586 if (sec != NULL && sec->output_section != NULL)
5587 val += sec->output_section->vma + sec->output_offset;
8387904d
AM
5588 }
5589 break;
5590 }
5591 }
645ea6a9 5592
645ea6a9 5593 return val;
8387904d
AM
5594}
5595
854b41e7
AM
5596/* Return true if symbol is defined in a regular object file. */
5597
5598static bfd_boolean
5599is_static_defined (struct elf_link_hash_entry *h)
5600{
5601 return ((h->root.type == bfd_link_hash_defined
5602 || h->root.type == bfd_link_hash_defweak)
5603 && h->root.u.def.section != NULL
5604 && h->root.u.def.section->output_section != NULL);
5605}
5606
b31867b6
AM
5607/* If FDH is a function descriptor symbol, return the associated code
5608 entry symbol if it is defined. Return NULL otherwise. */
5609
5610static struct ppc_link_hash_entry *
5611defined_code_entry (struct ppc_link_hash_entry *fdh)
5612{
5613 if (fdh->is_func_descriptor)
5614 {
5615 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5616 if (fh->elf.root.type == bfd_link_hash_defined
5617 || fh->elf.root.type == bfd_link_hash_defweak)
5618 return fh;
5619 }
5620 return NULL;
5621}
5622
5623/* If FH is a function code entry symbol, return the associated
5624 function descriptor symbol if it is defined. Return NULL otherwise. */
5625
5626static struct ppc_link_hash_entry *
5627defined_func_desc (struct ppc_link_hash_entry *fh)
5628{
5629 if (fh->oh != NULL
5630 && fh->oh->is_func_descriptor)
5631 {
5632 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5633 if (fdh->elf.root.type == bfd_link_hash_defined
5634 || fdh->elf.root.type == bfd_link_hash_defweak)
5635 return fdh;
5636 }
5637 return NULL;
5638}
5639
74f0fb50
AM
5640/* Mark all our entry sym sections, both opd and code section. */
5641
5642static void
5643ppc64_elf_gc_keep (struct bfd_link_info *info)
5644{
5645 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5646 struct bfd_sym_chain *sym;
5647
4dfe6ac6
NC
5648 if (htab == NULL)
5649 return;
5650
74f0fb50
AM
5651 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5652 {
b31867b6 5653 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM
5654 asection *sec;
5655
5656 eh = (struct ppc_link_hash_entry *)
b31867b6 5657 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM
5658 if (eh == NULL)
5659 continue;
5660 if (eh->elf.root.type != bfd_link_hash_defined
5661 && eh->elf.root.type != bfd_link_hash_defweak)
5662 continue;
5663
b31867b6
AM
5664 fh = defined_code_entry (eh);
5665 if (fh != NULL)
74f0fb50 5666 {
b31867b6 5667 sec = fh->elf.root.u.def.section;
74f0fb50
AM
5668 sec->flags |= SEC_KEEP;
5669 }
5670 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5671 && opd_entry_value (eh->elf.root.u.def.section,
5672 eh->elf.root.u.def.value,
5673 &sec, NULL) != (bfd_vma) -1)
5674 sec->flags |= SEC_KEEP;
5675
5676 sec = eh->elf.root.u.def.section;
5677 sec->flags |= SEC_KEEP;
5678 }
5679}
5680
64d03ab5
AM
5681/* Mark sections containing dynamically referenced symbols. When
5682 building shared libraries, we must assume that any visible symbol is
5683 referenced. */
5684
5685static bfd_boolean
5686ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5687{
5688 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5689 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 5690 struct ppc_link_hash_entry *fdh;
64d03ab5
AM
5691
5692 if (eh->elf.root.type == bfd_link_hash_warning)
5693 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5694
5695 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM
5696 fdh = defined_func_desc (eh);
5697 if (fdh != NULL)
5698 eh = fdh;
64d03ab5
AM
5699
5700 if ((eh->elf.root.type == bfd_link_hash_defined
5701 || eh->elf.root.type == bfd_link_hash_defweak)
5702 && (eh->elf.ref_dynamic
5703 || (!info->executable
5704 && eh->elf.def_regular
5705 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5706 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5707 {
5708 asection *code_sec;
b31867b6 5709 struct ppc_link_hash_entry *fh;
64d03ab5
AM
5710
5711 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5712
5713 /* Function descriptor syms cause the associated
5714 function code sym section to be marked. */
b31867b6
AM
5715 fh = defined_code_entry (eh);
5716 if (fh != NULL)
5717 {
5718 code_sec = fh->elf.root.u.def.section;
5719 code_sec->flags |= SEC_KEEP;
5720 }
64d03ab5
AM
5721 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5722 && opd_entry_value (eh->elf.root.u.def.section,
5723 eh->elf.root.u.def.value,
5724 &code_sec, NULL) != (bfd_vma) -1)
5725 code_sec->flags |= SEC_KEEP;
5726 }
5727
5728 return TRUE;
5729}
5730
5bd4f169
AM
5731/* Return the section that should be marked against GC for a given
5732 relocation. */
5733
5734static asection *
4ce794b7 5735ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 5736 struct bfd_link_info *info,
4ce794b7
AM
5737 Elf_Internal_Rela *rel,
5738 struct elf_link_hash_entry *h,
5739 Elf_Internal_Sym *sym)
5bd4f169 5740{
ccfa59ea
AM
5741 asection *rsec;
5742
ccfa59ea
AM
5743 /* Syms return NULL if we're marking .opd, so we avoid marking all
5744 function sections, as all functions are referenced in .opd. */
5745 rsec = NULL;
5746 if (get_opd_info (sec) != NULL)
5747 return rsec;
1e2f5b6e 5748
5bd4f169
AM
5749 if (h != NULL)
5750 {
04c9666a 5751 enum elf_ppc64_reloc_type r_type;
b31867b6 5752 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 5753
4ce794b7 5754 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5755 switch (r_type)
5bd4f169
AM
5756 {
5757 case R_PPC64_GNU_VTINHERIT:
5758 case R_PPC64_GNU_VTENTRY:
5759 break;
5760
5761 default:
5762 switch (h->root.type)
5763 {
5764 case bfd_link_hash_defined:
5765 case bfd_link_hash_defweak:
ccfa59ea 5766 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM
5767 fdh = defined_func_desc (eh);
5768 if (fdh != NULL)
5769 eh = fdh;
1e2f5b6e
AM
5770
5771 /* Function descriptor syms cause the associated
5772 function code sym section to be marked. */
b31867b6
AM
5773 fh = defined_code_entry (eh);
5774 if (fh != NULL)
ccfa59ea
AM
5775 {
5776 /* They also mark their opd section. */
74f0fb50 5777 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5778
b31867b6 5779 rsec = fh->elf.root.u.def.section;
ccfa59ea 5780 }
8387904d
AM
5781 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5782 && opd_entry_value (eh->elf.root.u.def.section,
5783 eh->elf.root.u.def.value,
5784 &rsec, NULL) != (bfd_vma) -1)
74f0fb50 5785 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5786 else
1e2f5b6e
AM
5787 rsec = h->root.u.def.section;
5788 break;
5bd4f169
AM
5789
5790 case bfd_link_hash_common:
1e2f5b6e
AM
5791 rsec = h->root.u.c.p->section;
5792 break;
5bd4f169
AM
5793
5794 default:
fb34365b 5795 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM
5796 }
5797 }
5798 }
5799 else
5800 {
74f0fb50 5801 struct _opd_sec_data *opd;
1e2f5b6e
AM
5802
5803 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM
5804 opd = get_opd_info (rsec);
5805 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5806 {
74f0fb50 5807 rsec->gc_mark = 1;
ccfa59ea 5808
74f0fb50 5809 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5810 }
5bd4f169
AM
5811 }
5812
1e2f5b6e 5813 return rsec;
5bd4f169
AM
5814}
5815
65f38f15
AM
5816/* Update the .got, .plt. and dynamic reloc reference counts for the
5817 section being removed. */
5bd4f169 5818
b34976b6 5819static bfd_boolean
4ce794b7
AM
5820ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5821 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5822{
411e1bfb 5823 struct ppc_link_hash_table *htab;
5bd4f169
AM
5824 Elf_Internal_Shdr *symtab_hdr;
5825 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5826 struct got_entry **local_got_ents;
5bd4f169 5827 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5828
7dda2462
TG
5829 if (info->relocatable)
5830 return TRUE;
5831
680a3378
AM
5832 if ((sec->flags & SEC_ALLOC) == 0)
5833 return TRUE;
5834
ec338859
AM
5835 elf_section_data (sec)->local_dynrel = NULL;
5836
411e1bfb 5837 htab = ppc_hash_table (info);
4dfe6ac6
NC
5838 if (htab == NULL)
5839 return FALSE;
5840
0ffa91dd 5841 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5842 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5843 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM
5844
5845 relend = relocs + sec->reloc_count;
5846 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM
5847 {
5848 unsigned long r_symndx;
04c9666a 5849 enum elf_ppc64_reloc_type r_type;
58ac9f71 5850 struct elf_link_hash_entry *h = NULL;
f961d9dd 5851 unsigned char tls_type = 0;
5bd4f169 5852
a33d1f77 5853 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5854 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM
5855 if (r_symndx >= symtab_hdr->sh_info)
5856 {
5857 struct ppc_link_hash_entry *eh;
5858 struct ppc_dyn_relocs **pp;
5859 struct ppc_dyn_relocs *p;
5860
5861 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5862 h = elf_follow_link (h);
58ac9f71
AM
5863 eh = (struct ppc_link_hash_entry *) h;
5864
5865 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5866 if (p->sec == sec)
5867 {
5868 /* Everything must go for SEC. */
5869 *pp = p->next;
5870 break;
5871 }
5872 }
5873
e054468f
AM
5874 if (is_branch_reloc (r_type))
5875 {
5876 struct plt_entry **ifunc = NULL;
5877 if (h != NULL)
5878 {
5879 if (h->type == STT_GNU_IFUNC)
5880 ifunc = &h->plt.plist;
5881 }
5882 else if (local_got_ents != NULL)
5883 {
5884 struct plt_entry **local_plt = (struct plt_entry **)
5885 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5886 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM
5887 (local_plt + symtab_hdr->sh_info);
5888 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5889 ifunc = local_plt + r_symndx;
5890 }
5891 if (ifunc != NULL)
5892 {
5893 struct plt_entry *ent;
5894
5895 for (ent = *ifunc; ent != NULL; ent = ent->next)
5896 if (ent->addend == rel->r_addend)
5897 break;
5898 if (ent == NULL)
5899 abort ();
5900 if (ent->plt.refcount > 0)
5901 ent->plt.refcount -= 1;
5902 continue;
5903 }
5904 }
5905
a33d1f77
AM
5906 switch (r_type)
5907 {
411e1bfb
AM
5908 case R_PPC64_GOT_TLSLD16:
5909 case R_PPC64_GOT_TLSLD16_LO:
5910 case R_PPC64_GOT_TLSLD16_HI:
5911 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5912 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5913 goto dogot;
5914
5915 case R_PPC64_GOT_TLSGD16:
5916 case R_PPC64_GOT_TLSGD16_LO:
5917 case R_PPC64_GOT_TLSGD16_HI:
5918 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5919 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5920 goto dogot;
5921
5922 case R_PPC64_GOT_TPREL16_DS:
5923 case R_PPC64_GOT_TPREL16_LO_DS:
5924 case R_PPC64_GOT_TPREL16_HI:
5925 case R_PPC64_GOT_TPREL16_HA:
5926 tls_type = TLS_TLS | TLS_TPREL;
5927 goto dogot;
5928
5929 case R_PPC64_GOT_DTPREL16_DS:
5930 case R_PPC64_GOT_DTPREL16_LO_DS:
5931 case R_PPC64_GOT_DTPREL16_HI:
5932 case R_PPC64_GOT_DTPREL16_HA:
5933 tls_type = TLS_TLS | TLS_DTPREL;
5934 goto dogot;
5935
a33d1f77
AM
5936 case R_PPC64_GOT16:
5937 case R_PPC64_GOT16_DS:
5938 case R_PPC64_GOT16_HA:
5939 case R_PPC64_GOT16_HI:
5940 case R_PPC64_GOT16_LO:
5941 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM
5942 dogot:
5943 {
5944 struct got_entry *ent;
5945
58ac9f71
AM
5946 if (h != NULL)
5947 ent = h->got.glist;
411e1bfb
AM
5948 else
5949 ent = local_got_ents[r_symndx];
5950
5951 for (; ent != NULL; ent = ent->next)
5952 if (ent->addend == rel->r_addend
e717da7e 5953 && ent->owner == abfd
411e1bfb
AM
5954 && ent->tls_type == tls_type)
5955 break;
5956 if (ent == NULL)
5957 abort ();
5958 if (ent->got.refcount > 0)
5959 ent->got.refcount -= 1;
5960 }
a33d1f77 5961 break;
65f38f15 5962
a33d1f77
AM
5963 case R_PPC64_PLT16_HA:
5964 case R_PPC64_PLT16_HI:
5965 case R_PPC64_PLT16_LO:
5966 case R_PPC64_PLT32:
5967 case R_PPC64_PLT64:
721956f4
AM
5968 case R_PPC64_REL14:
5969 case R_PPC64_REL14_BRNTAKEN:
5970 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5971 case R_PPC64_REL24:
58ac9f71 5972 if (h != NULL)
5d1634d7 5973 {
411e1bfb
AM
5974 struct plt_entry *ent;
5975
411e1bfb
AM
5976 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5977 if (ent->addend == rel->r_addend)
5978 break;
7c6c1722 5979 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 5980 ent->plt.refcount -= 1;
5d1634d7 5981 }
e86ce104 5982 break;
5d1634d7 5983
a33d1f77
AM
5984 default:
5985 break;
5986 }
5987 }
b34976b6 5988 return TRUE;
5bd4f169
AM
5989}
5990
deb0e272
AM
5991/* The maximum size of .sfpr. */
5992#define SFPR_MAX (218*4)
5993
5994struct sfpr_def_parms
5995{
699733f6
AM
5996 const char name[12];
5997 unsigned char lo, hi;
deb0e272
AM
5998 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5999 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6000};
6001
6002/* Auto-generate _save*, _rest* functions in .sfpr. */
6003
4dfe6ac6 6004static bfd_boolean
deb0e272
AM
6005sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6006{
6007 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6008 unsigned int i;
6009 size_t len = strlen (parm->name);
6010 bfd_boolean writing = FALSE;
699733f6 6011 char sym[16];
deb0e272 6012
4dfe6ac6
NC
6013 if (htab == NULL)
6014 return FALSE;
6015
deb0e272
AM
6016 memcpy (sym, parm->name, len);
6017 sym[len + 2] = 0;
6018
6019 for (i = parm->lo; i <= parm->hi; i++)
6020 {
6021 struct elf_link_hash_entry *h;
6022
6023 sym[len + 0] = i / 10 + '0';
6024 sym[len + 1] = i % 10 + '0';
6025 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6026 if (h != NULL
f5385ebf 6027 && !h->def_regular)
deb0e272
AM
6028 {
6029 h->root.type = bfd_link_hash_defined;
6030 h->root.u.def.section = htab->sfpr;
6031 h->root.u.def.value = htab->sfpr->size;
6032 h->type = STT_FUNC;
f5385ebf 6033 h->def_regular = 1;
deb0e272
AM
6034 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6035 writing = TRUE;
6036 if (htab->sfpr->contents == NULL)
6037 {
6038 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6039 if (htab->sfpr->contents == NULL)
6040 return FALSE;
6041 }
6042 }
6043 if (writing)
6044 {
6045 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6046 if (i != parm->hi)
6047 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6048 else
6049 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6050 htab->sfpr->size = p - htab->sfpr->contents;
6051 }
6052 }
6053
6054 return TRUE;
6055}
6056
6057static bfd_byte *
6058savegpr0 (bfd *abfd, bfd_byte *p, int r)
6059{
6060 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6061 return p + 4;
6062}
6063
6064static bfd_byte *
6065savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6066{
6067 p = savegpr0 (abfd, p, r);
6068 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6069 p = p + 4;
6070 bfd_put_32 (abfd, BLR, p);
6071 return p + 4;
6072}
6073
6074static bfd_byte *
6075restgpr0 (bfd *abfd, bfd_byte *p, int r)
6076{
6077 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6078 return p + 4;
6079}
6080
6081static bfd_byte *
6082restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6083{
6084 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6085 p = p + 4;
6086 p = restgpr0 (abfd, p, r);
6087 bfd_put_32 (abfd, MTLR_R0, p);
6088 p = p + 4;
6089 if (r == 29)
6090 {
6091 p = restgpr0 (abfd, p, 30);
6092 p = restgpr0 (abfd, p, 31);
6093 }
6094 bfd_put_32 (abfd, BLR, p);
6095 return p + 4;
6096}
6097
6098static bfd_byte *
6099savegpr1 (bfd *abfd, bfd_byte *p, int r)
6100{
6101 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6102 return p + 4;
6103}
6104
6105static bfd_byte *
6106savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6107{
6108 p = savegpr1 (abfd, p, r);
6109 bfd_put_32 (abfd, BLR, p);
6110 return p + 4;
6111}
6112
6113static bfd_byte *
6114restgpr1 (bfd *abfd, bfd_byte *p, int r)
6115{
6116 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6117 return p + 4;
6118}
6119
6120static bfd_byte *
6121restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6122{
6123 p = restgpr1 (abfd, p, r);
6124 bfd_put_32 (abfd, BLR, p);
6125 return p + 4;
6126}
6127
6128static bfd_byte *
6129savefpr (bfd *abfd, bfd_byte *p, int r)
6130{
6131 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6132 return p + 4;
6133}
6134
6135static bfd_byte *
6136savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6137{
6138 p = savefpr (abfd, p, r);
6139 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6140 p = p + 4;
6141 bfd_put_32 (abfd, BLR, p);
6142 return p + 4;
6143}
6144
6145static bfd_byte *
6146restfpr (bfd *abfd, bfd_byte *p, int r)
6147{
6148 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6149 return p + 4;
6150}
6151
6152static bfd_byte *
6153restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6154{
6155 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6156 p = p + 4;
6157 p = restfpr (abfd, p, r);
6158 bfd_put_32 (abfd, MTLR_R0, p);
6159 p = p + 4;
6160 if (r == 29)
6161 {
6162 p = restfpr (abfd, p, 30);
6163 p = restfpr (abfd, p, 31);
6164 }
6165 bfd_put_32 (abfd, BLR, p);
6166 return p + 4;
6167}
6168
6169static bfd_byte *
6170savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6171{
6172 p = savefpr (abfd, p, r);
6173 bfd_put_32 (abfd, BLR, p);
6174 return p + 4;
6175}
6176
6177static bfd_byte *
6178restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6179{
6180 p = restfpr (abfd, p, r);
6181 bfd_put_32 (abfd, BLR, p);
6182 return p + 4;
6183}
6184
6185static bfd_byte *
6186savevr (bfd *abfd, bfd_byte *p, int r)
6187{
6188 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6189 p = p + 4;
6190 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6191 return p + 4;
6192}
6193
6194static bfd_byte *
6195savevr_tail (bfd *abfd, bfd_byte *p, int r)
6196{
6197 p = savevr (abfd, p, r);
6198 bfd_put_32 (abfd, BLR, p);
6199 return p + 4;
6200}
6201
6202static bfd_byte *
6203restvr (bfd *abfd, bfd_byte *p, int r)
6204{
6205 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6206 p = p + 4;
6207 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6208 return p + 4;
6209}
6210
6211static bfd_byte *
6212restvr_tail (bfd *abfd, bfd_byte *p, int r)
6213{
6214 p = restvr (abfd, p, r);
6215 bfd_put_32 (abfd, BLR, p);
6216 return p + 4;
6217}
6218
e86ce104
AM
6219/* Called via elf_link_hash_traverse to transfer dynamic linking
6220 information on function code symbol entries to their corresponding
6221 function descriptor symbol entries. */
deb0e272 6222
b34976b6 6223static bfd_boolean
4ce794b7 6224func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6225{
e86ce104 6226 struct bfd_link_info *info;
65f38f15 6227 struct ppc_link_hash_table *htab;
411e1bfb 6228 struct plt_entry *ent;
50bc7936
AM
6229 struct ppc_link_hash_entry *fh;
6230 struct ppc_link_hash_entry *fdh;
6231 bfd_boolean force_local;
5bd4f169 6232
50bc7936
AM
6233 fh = (struct ppc_link_hash_entry *) h;
6234 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6235 return TRUE;
e86ce104 6236
50bc7936
AM
6237 if (fh->elf.root.type == bfd_link_hash_warning)
6238 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 6239
4ce794b7 6240 info = inf;
65f38f15 6241 htab = ppc_hash_table (info);
4dfe6ac6
NC
6242 if (htab == NULL)
6243 return FALSE;
5bd4f169 6244
c09bdfe5
AM
6245 /* Resolve undefined references to dot-symbols as the value
6246 in the function descriptor, if we have one in a regular object.
6247 This is to satisfy cases like ".quad .foo". Calls to functions
6248 in dynamic objects are handled elsewhere. */
6249 if (fh->elf.root.type == bfd_link_hash_undefweak
6250 && fh->was_undefined
b31867b6
AM
6251 && (fdh = defined_func_desc (fh)) != NULL
6252 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6253 && opd_entry_value (fdh->elf.root.u.def.section,
6254 fdh->elf.root.u.def.value,
c09bdfe5
AM
6255 &fh->elf.root.u.def.section,
6256 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6257 {
b31867b6 6258 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6259 fh->elf.forced_local = 1;
b31867b6
AM
6260 fh->elf.def_regular = fdh->elf.def_regular;
6261 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM
6262 }
6263
e86ce104
AM
6264 /* If this is a function code symbol, transfer dynamic linking
6265 information to the function descriptor symbol. */
50bc7936 6266 if (!fh->is_func)
b34976b6 6267 return TRUE;
e86ce104 6268
50bc7936 6269 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
6270 if (ent->plt.refcount > 0)
6271 break;
50bc7936
AM
6272 if (ent == NULL
6273 || fh->elf.root.root.string[0] != '.'
6274 || fh->elf.root.root.string[1] == '\0')
6275 return TRUE;
5bd4f169 6276
50bc7936
AM
6277 /* Find the corresponding function descriptor symbol. Create it
6278 as undefined if necessary. */
5bd4f169 6279
b31867b6 6280 fdh = lookup_fdh (fh, htab);
50bc7936 6281 if (fdh == NULL
df131623 6282 && !info->executable
50bc7936
AM
6283 && (fh->elf.root.type == bfd_link_hash_undefined
6284 || fh->elf.root.type == bfd_link_hash_undefweak))
6285 {
908b32fc 6286 fdh = make_fdh (info, fh);
bb700d78
AM
6287 if (fdh == NULL)
6288 return FALSE;
50bc7936 6289 }
648cca2c 6290
908b32fc 6291 /* Fake function descriptors are made undefweak. If the function
433817dd
AM
6292 code symbol is strong undefined, make the fake sym the same.
6293 If the function code symbol is defined, then force the fake
6294 descriptor local; We can't support overriding of symbols in a
6295 shared library on a fake descriptor. */
908b32fc
AM
6296
6297 if (fdh != NULL
6298 && fdh->fake
433817dd 6299 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6300 {
433817dd
AM
6301 if (fh->elf.root.type == bfd_link_hash_undefined)
6302 {
6303 fdh->elf.root.type = bfd_link_hash_undefined;
6304 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6305 }
6306 else if (fh->elf.root.type == bfd_link_hash_defined
6307 || fh->elf.root.type == bfd_link_hash_defweak)
6308 {
6309 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6310 }
908b32fc
AM
6311 }
6312
50bc7936 6313 if (fdh != NULL
f5385ebf 6314 && !fdh->elf.forced_local
df131623 6315 && (!info->executable
f5385ebf
AM
6316 || fdh->elf.def_dynamic
6317 || fdh->elf.ref_dynamic
50bc7936
AM
6318 || (fdh->elf.root.type == bfd_link_hash_undefweak
6319 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6320 {
6321 if (fdh->elf.dynindx == -1)
c152c796 6322 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6323 return FALSE;
f5385ebf
AM
6324 fdh->elf.ref_regular |= fh->elf.ref_regular;
6325 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6326 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6327 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6328 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6329 {
40d16e0b 6330 move_plt_plist (fh, fdh);
f5385ebf 6331 fdh->elf.needs_plt = 1;
e86ce104 6332 }
50bc7936 6333 fdh->is_func_descriptor = 1;
34814b9f
AM
6334 fdh->oh = fh;
6335 fh->oh = fdh;
e86ce104
AM
6336 }
6337
50bc7936
AM
6338 /* Now that the info is on the function descriptor, clear the
6339 function code sym info. Any function code syms for which we
6340 don't have a definition in a regular file, we force local.
6341 This prevents a shared library from exporting syms that have
6342 been imported from another library. Function code syms that
6343 are really in the library we must leave global to prevent the
6344 linker dragging in a definition from a static library. */
93f3fa99
AM
6345 force_local = (!fh->elf.def_regular
6346 || fdh == NULL
6347 || !fdh->elf.def_regular
6348 || fdh->elf.forced_local);
50bc7936
AM
6349 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6350
b34976b6 6351 return TRUE;
e86ce104 6352}
40b8271b 6353
e86ce104 6354/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM
6355 this hook to a) provide some gcc support functions, and b) transfer
6356 dynamic linking information gathered so far on function code symbol
6357 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6358
b34976b6 6359static bfd_boolean
4ce794b7
AM
6360ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6361 struct bfd_link_info *info)
e86ce104
AM
6362{
6363 struct ppc_link_hash_table *htab;
82bd7b59 6364 unsigned int i;
deb0e272
AM
6365 const struct sfpr_def_parms funcs[] =
6366 {
6367 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6368 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6369 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6370 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6371 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6372 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6373 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6374 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6375 { "._savef", 14, 31, savefpr, savefpr1_tail },
6376 { "._restf", 14, 31, restfpr, restfpr1_tail },
6377 { "_savevr_", 20, 31, savevr, savevr_tail },
6378 { "_restvr_", 20, 31, restvr, restvr_tail }
6379 };
e86ce104
AM
6380
6381 htab = ppc_hash_table (info);
4dfe6ac6
NC
6382 if (htab == NULL)
6383 return FALSE;
6384
82bd7b59
AM
6385 if (htab->sfpr == NULL)
6386 /* We don't have any relocs. */
b34976b6 6387 return TRUE;
82bd7b59 6388
deb0e272
AM
6389 /* Provide any missing _save* and _rest* functions. */
6390 htab->sfpr->size = 0;
6391 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6392 if (!sfpr_define (info, &funcs[i]))
6393 return FALSE;
82bd7b59 6394
4ce794b7 6395 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6396
eea6121a 6397 if (htab->sfpr->size == 0)
8423293d 6398 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6399
b34976b6 6400 return TRUE;
e86ce104
AM
6401}
6402
6403/* Adjust a symbol defined by a dynamic object and referenced by a
6404 regular object. The current definition is in some section of the
6405 dynamic object, but we're not including those sections. We have to
6406 change the definition to something the rest of the link can
6407 understand. */
6408
b34976b6 6409static bfd_boolean
4ce794b7
AM
6410ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6411 struct elf_link_hash_entry *h)
e86ce104
AM
6412{
6413 struct ppc_link_hash_table *htab;
e86ce104 6414 asection *s;
e86ce104
AM
6415
6416 htab = ppc_hash_table (info);
4dfe6ac6
NC
6417 if (htab == NULL)
6418 return FALSE;
e86ce104
AM
6419
6420 /* Deal with function syms. */
6421 if (h->type == STT_FUNC
e054468f 6422 || h->type == STT_GNU_IFUNC
f5385ebf 6423 || h->needs_plt)
e86ce104
AM
6424 {
6425 /* Clear procedure linkage table information for any symbol that
6426 won't need a .plt entry. */
411e1bfb
AM
6427 struct plt_entry *ent;
6428 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6429 if (ent->plt.refcount > 0)
6430 break;
8387904d 6431 if (ent == NULL
e054468f
AM
6432 || (h->type != STT_GNU_IFUNC
6433 && (SYMBOL_CALLS_LOCAL (info, h)
6434 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6435 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 6436 {
411e1bfb 6437 h->plt.plist = NULL;
f5385ebf 6438 h->needs_plt = 0;
40b8271b 6439 }
5bd4f169 6440 }
bbd7ec4a 6441 else
411e1bfb 6442 h->plt.plist = NULL;
5bd4f169
AM
6443
6444 /* If this is a weak symbol, and there is a real definition, the
6445 processor independent code will have arranged for us to see the
6446 real definition first, and we can just use the same value. */
f6e332e6 6447 if (h->u.weakdef != NULL)
5bd4f169 6448 {
f6e332e6
AM
6449 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6450 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6451 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6452 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 6453 if (ELIMINATE_COPY_RELOCS)
f6e332e6 6454 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 6455 return TRUE;
5bd4f169
AM
6456 }
6457
5bd4f169
AM
6458 /* If we are creating a shared library, we must presume that the
6459 only references to the symbol are via the global offset table.
6460 For such cases we need not do anything here; the relocations will
6461 be handled correctly by relocate_section. */
6462 if (info->shared)
b34976b6 6463 return TRUE;
5bd4f169 6464
65f38f15
AM
6465 /* If there are no references to this symbol that do not use the
6466 GOT, we don't need to generate a copy reloc. */
f5385ebf 6467 if (!h->non_got_ref)
b34976b6 6468 return TRUE;
65f38f15 6469
b186458a
JJ
6470 /* Don't generate a copy reloc for symbols defined in the executable. */
6471 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6472 return TRUE;
6473
f4656909 6474 if (ELIMINATE_COPY_RELOCS)
65f38f15 6475 {
f4656909
AM
6476 struct ppc_link_hash_entry * eh;
6477 struct ppc_dyn_relocs *p;
65f38f15 6478
f4656909
AM
6479 eh = (struct ppc_link_hash_entry *) h;
6480 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6481 {
6482 s = p->sec->output_section;
6483 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6484 break;
6485 }
6486
6487 /* If we didn't find any dynamic relocs in read-only sections, then
6488 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6489 if (p == NULL)
6490 {
f5385ebf 6491 h->non_got_ref = 0;
f4656909
AM
6492 return TRUE;
6493 }
65f38f15
AM
6494 }
6495
5d35169e 6496 if (h->plt.plist != NULL)
97b639ba
AM
6497 {
6498 /* We should never get here, but unfortunately there are versions
6499 of gcc out there that improperly (for this ABI) put initialized
6500 function pointers, vtable refs and suchlike in read-only
6501 sections. Allow them to proceed, but warn that this might
6502 break at runtime. */
25f53a85 6503 info->callbacks->einfo
97b639ba 6504 (_("copy reloc against `%s' requires lazy plt linking; "
25f53a85 6505 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM
6506 h->root.root.string);
6507 }
5d35169e
AM
6508
6509 /* This is a reference to a symbol defined by a dynamic object which
6510 is not a function. */
6511
909272ee
AM
6512 if (h->size == 0)
6513 {
25f53a85
AM
6514 info->callbacks->einfo (_("dynamic variable `%s' is zero size\n"),
6515 h->root.root.string);
909272ee
AM
6516 return TRUE;
6517 }
6518
5bd4f169
AM
6519 /* We must allocate the symbol in our .dynbss section, which will
6520 become part of the .bss section of the executable. There will be
6521 an entry for this symbol in the .dynsym section. The dynamic
6522 object will contain position independent code, so all references
6523 from the dynamic object to this symbol will go through the global
6524 offset table. The dynamic linker will use the .dynsym entry to
6525 determine the address it must put in the global offset table, so
6526 both the dynamic object and the regular object will refer to the
6527 same memory location for the variable. */
5bd4f169 6528
04c9666a
AM
6529 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6530 to copy the initial value out of the dynamic object and into the
5bd4f169
AM
6531 runtime process image. We need to remember the offset into the
6532 .rela.bss section we are going to use. */
6533 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6534 {
eea6121a 6535 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 6536 h->needs_copy = 1;
5bd4f169
AM
6537 }
6538
4ce794b7 6539 s = htab->dynbss;
5bd4f169 6540
027297b7 6541 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM
6542}
6543
e86ce104
AM
6544/* If given a function descriptor symbol, hide both the function code
6545 sym and the descriptor. */
6546static void
4ce794b7
AM
6547ppc64_elf_hide_symbol (struct bfd_link_info *info,
6548 struct elf_link_hash_entry *h,
6549 bfd_boolean force_local)
e86ce104 6550{
34814b9f 6551 struct ppc_link_hash_entry *eh;
e86ce104
AM
6552 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6553
34814b9f
AM
6554 eh = (struct ppc_link_hash_entry *) h;
6555 if (eh->is_func_descriptor)
e86ce104 6556 {
34814b9f 6557 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 6558
721956f4 6559 if (fh == NULL)
d1329ca3
AM
6560 {
6561 const char *p, *q;
6562 struct ppc_link_hash_table *htab;
6563 char save;
6564
6565 /* We aren't supposed to use alloca in BFD because on
6566 systems which do not have alloca the version in libiberty
6567 calls xmalloc, which might cause the program to crash
6568 when it runs out of memory. This function doesn't have a
6569 return status, so there's no way to gracefully return an
6570 error. So cheat. We know that string[-1] can be safely
34814b9f
AM
6571 accessed; It's either a string in an ELF string table,
6572 or allocated in an objalloc structure. */
d1329ca3 6573
34814b9f 6574 p = eh->elf.root.root.string - 1;
d1329ca3
AM
6575 save = *p;
6576 *(char *) p = '.';
6577 htab = ppc_hash_table (info);
4dfe6ac6
NC
6578 if (htab == NULL)
6579 return;
6580
34814b9f
AM
6581 fh = (struct ppc_link_hash_entry *)
6582 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
6583 *(char *) p = save;
6584
6585 /* Unfortunately, if it so happens that the string we were
6586 looking for was allocated immediately before this string,
6587 then we overwrote the string terminator. That's the only
6588 reason the lookup should fail. */
6589 if (fh == NULL)
6590 {
34814b9f
AM
6591 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6592 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 6593 --q, --p;
34814b9f
AM
6594 if (q < eh->elf.root.root.string && *p == '.')
6595 fh = (struct ppc_link_hash_entry *)
6596 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
6597 }
6598 if (fh != NULL)
6599 {
34814b9f
AM
6600 eh->oh = fh;
6601 fh->oh = eh;
d1329ca3
AM
6602 }
6603 }
e86ce104 6604 if (fh != NULL)
34814b9f 6605 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM
6606 }
6607}
6608
411e1bfb 6609static bfd_boolean
8843416a
AM
6610get_sym_h (struct elf_link_hash_entry **hp,
6611 Elf_Internal_Sym **symp,
6612 asection **symsecp,
f961d9dd 6613 unsigned char **tls_maskp,
8843416a
AM
6614 Elf_Internal_Sym **locsymsp,
6615 unsigned long r_symndx,
6616 bfd *ibfd)
411e1bfb 6617{
0ffa91dd 6618 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM
6619
6620 if (r_symndx >= symtab_hdr->sh_info)
6621 {
6622 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6623 struct elf_link_hash_entry *h;
6624
6625 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6626 h = elf_follow_link (h);
411e1bfb
AM
6627
6628 if (hp != NULL)
6629 *hp = h;
6630
6631 if (symp != NULL)
6632 *symp = NULL;
6633
6634 if (symsecp != NULL)
6635 {
6636 asection *symsec = NULL;
6637 if (h->root.type == bfd_link_hash_defined
6638 || h->root.type == bfd_link_hash_defweak)
6639 symsec = h->root.u.def.section;
6640 *symsecp = symsec;
6641 }
6642
e7b938ca 6643 if (tls_maskp != NULL)
411e1bfb
AM
6644 {
6645 struct ppc_link_hash_entry *eh;
6646
6647 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6648 *tls_maskp = &eh->tls_mask;
411e1bfb
AM
6649 }
6650 }
6651 else
6652 {
6653 Elf_Internal_Sym *sym;
6654 Elf_Internal_Sym *locsyms = *locsymsp;
6655
6656 if (locsyms == NULL)
6657 {
6658 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6659 if (locsyms == NULL)
6660 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6661 symtab_hdr->sh_info,
6662 0, NULL, NULL, NULL);
6663 if (locsyms == NULL)
6664 return FALSE;
6665 *locsymsp = locsyms;
6666 }
6667 sym = locsyms + r_symndx;
6668
6669 if (hp != NULL)
6670 *hp = NULL;
6671
6672 if (symp != NULL)
6673 *symp = sym;
6674
6675 if (symsecp != NULL)
cb33740c 6676 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 6677
e7b938ca 6678 if (tls_maskp != NULL)
411e1bfb
AM
6679 {
6680 struct got_entry **lgot_ents;
f961d9dd 6681 unsigned char *tls_mask;
411e1bfb 6682
e7b938ca 6683 tls_mask = NULL;
411e1bfb
AM
6684 lgot_ents = elf_local_got_ents (ibfd);
6685 if (lgot_ents != NULL)
6686 {
e054468f
AM
6687 struct plt_entry **local_plt = (struct plt_entry **)
6688 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 6689 unsigned char *lgot_masks = (unsigned char *)
e054468f 6690 (local_plt + symtab_hdr->sh_info);
e7b938ca 6691 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6692 }
e7b938ca 6693 *tls_maskp = tls_mask;
411e1bfb
AM
6694 }
6695 }
6696 return TRUE;
6697}
6698
e7b938ca 6699/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6700 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6701 type suitable for optimization, and 1 otherwise. */
951fd09b
AM
6702
6703static int
f961d9dd 6704get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM
6705 unsigned long *toc_symndx,
6706 bfd_vma *toc_addend,
0d4792f7 6707 Elf_Internal_Sym **locsymsp,
3a71aa26
AM
6708 const Elf_Internal_Rela *rel,
6709 bfd *ibfd)
411e1bfb
AM
6710{
6711 unsigned long r_symndx;
0d4792f7 6712 int next_r;
411e1bfb
AM
6713 struct elf_link_hash_entry *h;
6714 Elf_Internal_Sym *sym;
6715 asection *sec;
6716 bfd_vma off;
6717
6718 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6719 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6720 return 0;
411e1bfb 6721
e7b938ca 6722 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6723 || sec == NULL
6bee8834 6724 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 6725 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6726 return 1;
411e1bfb
AM
6727
6728 /* Look inside a TOC section too. */
6729 if (h != NULL)
6730 {
6731 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6732 off = h->root.u.def.value;
6733 }
6734 else
6735 off = sym->st_value;
6736 off += rel->r_addend;
6737 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM
6738 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6739 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM
6740 if (toc_symndx != NULL)
6741 *toc_symndx = r_symndx;
3a71aa26
AM
6742 if (toc_addend != NULL)
6743 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6744 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6745 return 0;
854b41e7 6746 if ((h == NULL || is_static_defined (h))
0d4792f7
AM
6747 && (next_r == -1 || next_r == -2))
6748 return 1 - next_r;
951fd09b 6749 return 1;
411e1bfb
AM
6750}
6751
754021d0 6752/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6753 code for the old ABI, these will already have been done. */
754021d0
AM
6754
6755static bfd_boolean
6756adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6757{
6758 struct ppc_link_hash_entry *eh;
6759 asection *sym_sec;
74f0fb50 6760 struct _opd_sec_data *opd;
754021d0
AM
6761
6762 if (h->root.type == bfd_link_hash_indirect)
6763 return TRUE;
6764
6765 if (h->root.type == bfd_link_hash_warning)
6766 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6767
6768 if (h->root.type != bfd_link_hash_defined
6769 && h->root.type != bfd_link_hash_defweak)
6770 return TRUE;
6771
6772 eh = (struct ppc_link_hash_entry *) h;
6773 if (eh->adjust_done)
6774 return TRUE;
6775
6776 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM
6777 opd = get_opd_info (sym_sec);
6778 if (opd != NULL && opd->adjust != NULL)
754021d0 6779 {
74f0fb50 6780 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM
6781 if (adjust == -1)
6782 {
6783 /* This entry has been deleted. */
b3fac117 6784 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM
6785 if (dsec == NULL)
6786 {
6787 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6788 if (elf_discarded_section (dsec))
6789 {
b3fac117 6790 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM
6791 break;
6792 }
6793 }
4025353c 6794 eh->elf.root.u.def.value = 0;
81688140 6795 eh->elf.root.u.def.section = dsec;
4025353c
AM
6796 }
6797 else
6798 eh->elf.root.u.def.value += adjust;
754021d0
AM
6799 eh->adjust_done = 1;
6800 }
6801 return TRUE;
6802}
6803
8c1d1bb8
AM
6804/* Handles decrementing dynamic reloc counts for the reloc specified by
6805 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6806 have already been determined. */
6807
6808static bfd_boolean
6809dec_dynrel_count (bfd_vma r_info,
6810 asection *sec,
6811 struct bfd_link_info *info,
6812 Elf_Internal_Sym **local_syms,
6813 struct elf_link_hash_entry *h,
6814 asection *sym_sec)
6815{
6816 enum elf_ppc64_reloc_type r_type;
6817 struct ppc_dyn_relocs *p;
6818 struct ppc_dyn_relocs **pp;
6819
6820 /* Can this reloc be dynamic? This switch, and later tests here
6821 should be kept in sync with the code in check_relocs. */
6822 r_type = ELF64_R_TYPE (r_info);
6823 switch (r_type)
6824 {
6825 default:
6826 return TRUE;
6827
6828 case R_PPC64_TPREL16:
6829 case R_PPC64_TPREL16_LO:
6830 case R_PPC64_TPREL16_HI:
6831 case R_PPC64_TPREL16_HA:
6832 case R_PPC64_TPREL16_DS:
6833 case R_PPC64_TPREL16_LO_DS:
6834 case R_PPC64_TPREL16_HIGHER:
6835 case R_PPC64_TPREL16_HIGHERA:
6836 case R_PPC64_TPREL16_HIGHEST:
6837 case R_PPC64_TPREL16_HIGHESTA:
6838 if (!info->shared)
6839 return TRUE;
6840
6841 case R_PPC64_TPREL64:
6842 case R_PPC64_DTPMOD64:
6843 case R_PPC64_DTPREL64:
6844 case R_PPC64_ADDR64:
6845 case R_PPC64_REL30:
6846 case R_PPC64_REL32:
6847 case R_PPC64_REL64:
6848 case R_PPC64_ADDR14:
6849 case R_PPC64_ADDR14_BRNTAKEN:
6850 case R_PPC64_ADDR14_BRTAKEN:
6851 case R_PPC64_ADDR16:
6852 case R_PPC64_ADDR16_DS:
6853 case R_PPC64_ADDR16_HA:
6854 case R_PPC64_ADDR16_HI:
6855 case R_PPC64_ADDR16_HIGHER:
6856 case R_PPC64_ADDR16_HIGHERA:
6857 case R_PPC64_ADDR16_HIGHEST:
6858 case R_PPC64_ADDR16_HIGHESTA:
6859 case R_PPC64_ADDR16_LO:
6860 case R_PPC64_ADDR16_LO_DS:
6861 case R_PPC64_ADDR24:
6862 case R_PPC64_ADDR32:
6863 case R_PPC64_UADDR16:
6864 case R_PPC64_UADDR32:
6865 case R_PPC64_UADDR64:
6866 case R_PPC64_TOC:
6867 break;
6868 }
6869
6870 if (local_syms != NULL)
6871 {
6872 unsigned long r_symndx;
6873 Elf_Internal_Sym *sym;
6874 bfd *ibfd = sec->owner;
6875
6876 r_symndx = ELF64_R_SYM (r_info);
6877 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6878 return FALSE;
6879 }
6880
6881 if ((info->shared
1d483afe 6882 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8
AM
6883 || (h != NULL
6884 && (!info->symbolic
6885 || h->root.type == bfd_link_hash_defweak
6886 || !h->def_regular))))
6887 || (ELIMINATE_COPY_RELOCS
6888 && !info->shared
6889 && h != NULL
6890 && (h->root.type == bfd_link_hash_defweak
6891 || !h->def_regular)))
6892 ;
6893 else
6894 return TRUE;
6895
6896 if (h != NULL)
6897 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6898 else
6edfbbad 6899 {
60124e18
AM
6900 if (sym_sec != NULL)
6901 {
6902 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6903 pp = (struct ppc_dyn_relocs **) vpp;
6904 }
6905 else
6906 {
6907 void *vpp = &elf_section_data (sec)->local_dynrel;
6908 pp = (struct ppc_dyn_relocs **) vpp;
6909 }
6910
6911 /* elf_gc_sweep may have already removed all dyn relocs associated
6912 with local syms for a given section. Don't report a dynreloc
6913 miscount. */
6914 if (*pp == NULL)
6915 return TRUE;
6edfbbad 6916 }
8c1d1bb8
AM
6917
6918 while ((p = *pp) != NULL)
6919 {
6920 if (p->sec == sec)
6921 {
1d483afe 6922 if (!must_be_dyn_reloc (info, r_type))
8c1d1bb8
AM
6923 p->pc_count -= 1;
6924 p->count -= 1;
6925 if (p->count == 0)
6926 *pp = p->next;
6927 return TRUE;
6928 }
6929 pp = &p->next;
6930 }
6931
25f53a85
AM
6932 info->callbacks->einfo (_("dynreloc miscount for %B, section %A\n"),
6933 sec->owner, sec);
8c1d1bb8
AM
6934 bfd_set_error (bfd_error_bad_value);
6935 return FALSE;
6936}
6937
754021d0
AM
6938/* Remove unused Official Procedure Descriptor entries. Currently we
6939 only remove those associated with functions in discarded link-once
6940 sections, or weakly defined functions that have been overridden. It
6941 would be possible to remove many more entries for statically linked
6942 applications. */
6943
b34976b6 6944bfd_boolean
33c0ec9d 6945ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
1e2f5b6e
AM
6946{
6947 bfd *ibfd;
754021d0 6948 bfd_boolean some_edited = FALSE;
3f764659 6949 asection *need_pad = NULL;
1e2f5b6e 6950
411e1bfb 6951 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM
6952 {
6953 asection *sec;
6954 Elf_Internal_Rela *relstart, *rel, *relend;
6955 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6956 Elf_Internal_Sym *local_syms;
1e2f5b6e 6957 bfd_vma offset;
74f0fb50 6958 struct _opd_sec_data *opd;
3f764659
JJ
6959 bfd_boolean need_edit, add_aux_fields;
6960 bfd_size_type cnt_16b = 0;
1e2f5b6e 6961
854b41e7
AM
6962 if (!is_ppc64_elf (ibfd))
6963 continue;
6964
1e2f5b6e 6965 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6966 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM
6967 continue;
6968
4b85d634
AM
6969 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6970 continue;
6971
1e2f5b6e
AM
6972 if (sec->output_section == bfd_abs_section_ptr)
6973 continue;
6974
6975 /* Look through the section relocs. */
6976 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6977 continue;
6978
6cdc0ccc 6979 local_syms = NULL;
0ffa91dd 6980 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM
6981
6982 /* Read the relocations. */
4ce794b7 6983 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6984 info->keep_memory);
1e2f5b6e 6985 if (relstart == NULL)
b34976b6 6986 return FALSE;
1e2f5b6e
AM
6987
6988 /* First run through the relocs to check they are sane, and to
6989 determine whether we need to edit this opd section. */
b34976b6 6990 need_edit = FALSE;
3f764659 6991 need_pad = sec;
1e2f5b6e
AM
6992 offset = 0;
6993 relend = relstart + sec->reloc_count;
50bc7936 6994 for (rel = relstart; rel < relend; )
1e2f5b6e 6995 {
04c9666a 6996 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM
6997 unsigned long r_symndx;
6998 asection *sym_sec;
6999 struct elf_link_hash_entry *h;
7000 Elf_Internal_Sym *sym;
7001
3f764659 7002 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM
7003 only interested in the reloc pointing to a function entry
7004 point. */
50bc7936
AM
7005 if (rel->r_offset != offset
7006 || rel + 1 >= relend
7007 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM
7008 {
7009 /* If someone messes with .opd alignment then after a
7010 "ld -r" we might have padding in the middle of .opd.
7011 Also, there's nothing to prevent someone putting
7012 something silly in .opd with the assembler. No .opd
b34976b6 7013 optimization for them! */
3f764659 7014 broken_opd:
1e2f5b6e 7015 (*_bfd_error_handler)
d003868e 7016 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7017 need_edit = FALSE;
1e2f5b6e
AM
7018 break;
7019 }
7020
50bc7936
AM
7021 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7022 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7023 {
7024 (*_bfd_error_handler)
d003868e
AM
7025 (_("%B: unexpected reloc type %u in .opd section"),
7026 ibfd, r_type);
50bc7936
AM
7027 need_edit = FALSE;
7028 break;
7029 }
7030
1e2f5b6e 7031 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM
7032 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7033 r_symndx, ibfd))
50bc7936 7034 goto error_ret;
1e2f5b6e
AM
7035
7036 if (sym_sec == NULL || sym_sec->owner == NULL)
7037 {
411e1bfb
AM
7038 const char *sym_name;
7039 if (h != NULL)
7040 sym_name = h->root.root.string;
7041 else
26c61ae5
L
7042 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7043 sym_sec);
411e1bfb 7044
1e2f5b6e 7045 (*_bfd_error_handler)
d003868e
AM
7046 (_("%B: undefined sym `%s' in .opd section"),
7047 ibfd, sym_name);
b34976b6 7048 need_edit = FALSE;
1e2f5b6e
AM
7049 break;
7050 }
7051
51020317
AM
7052 /* opd entries are always for functions defined in the
7053 current input bfd. If the symbol isn't defined in the
7054 input bfd, then we won't be using the function in this
7055 bfd; It must be defined in a linkonce section in another
7056 bfd, or is weak. It's also possible that we are
7057 discarding the function due to a linker script /DISCARD/,
7058 which we test for via the output_section. */
7059 if (sym_sec->owner != ibfd
7060 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7061 need_edit = TRUE;
1e2f5b6e 7062
50bc7936 7063 rel += 2;
3f764659
JJ
7064 if (rel == relend
7065 || (rel + 1 == relend && rel->r_offset == offset + 16))
7066 {
7067 if (sec->size == offset + 24)
7068 {
7069 need_pad = NULL;
7070 break;
7071 }
7072 if (rel == relend && sec->size == offset + 16)
7073 {
7074 cnt_16b++;
7075 break;
7076 }
7077 goto broken_opd;
7078 }
7079
7080 if (rel->r_offset == offset + 24)
7081 offset += 24;
7082 else if (rel->r_offset != offset + 16)
7083 goto broken_opd;
7084 else if (rel + 1 < relend
7085 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7086 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7087 {
7088 offset += 16;
7089 cnt_16b++;
7090 }
7091 else if (rel + 2 < relend
7092 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7093 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7094 {
7095 offset += 24;
7096 rel += 1;
7097 }
7098 else
7099 goto broken_opd;
1e2f5b6e
AM
7100 }
7101
3f764659
JJ
7102 add_aux_fields = non_overlapping && cnt_16b > 0;
7103
7104 if (need_edit || add_aux_fields)
1e2f5b6e
AM
7105 {
7106 Elf_Internal_Rela *write_rel;
d4730f92 7107 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7108 bfd_byte *rptr, *wptr;
983bddc8 7109 bfd_byte *new_contents;
b34976b6 7110 bfd_boolean skip;
3f764659 7111 long opd_ent_size;
74f0fb50
AM
7112 bfd_size_type amt;
7113
983bddc8 7114 new_contents = NULL;
74f0fb50
AM
7115 amt = sec->size * sizeof (long) / 8;
7116 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7117 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM
7118 if (opd->adjust == NULL)
7119 return FALSE;
7120 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM
7121
7122 /* This seems a waste of time as input .opd sections are all
7123 zeros as generated by gcc, but I suppose there's no reason
7124 this will always be so. We might start putting something in
7125 the third word of .opd entries. */
7126 if ((sec->flags & SEC_IN_MEMORY) == 0)
7127 {
eea6121a
AM
7128 bfd_byte *loc;
7129 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7130 {
eea6121a
AM
7131 if (loc != NULL)
7132 free (loc);
50bc7936 7133 error_ret:
6cdc0ccc
AM
7134 if (local_syms != NULL
7135 && symtab_hdr->contents != (unsigned char *) local_syms)
7136 free (local_syms);
6cdc0ccc
AM
7137 if (elf_section_data (sec)->relocs != relstart)
7138 free (relstart);
b34976b6 7139 return FALSE;
6cdc0ccc 7140 }
1e2f5b6e
AM
7141 sec->contents = loc;
7142 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7143 }
7144
7145 elf_section_data (sec)->relocs = relstart;
7146
3f764659 7147 new_contents = sec->contents;
3f764659
JJ
7148 if (add_aux_fields)
7149 {
7150 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7151 if (new_contents == NULL)
7152 return FALSE;
7153 need_pad = FALSE;
3f764659 7154 }
b4f4e59f
AM
7155 wptr = new_contents;
7156 rptr = sec->contents;
3f764659 7157
1e2f5b6e 7158 write_rel = relstart;
b34976b6 7159 skip = FALSE;
1e2f5b6e 7160 offset = 0;
3f764659 7161 opd_ent_size = 0;
1e2f5b6e
AM
7162 for (rel = relstart; rel < relend; rel++)
7163 {
50bc7936
AM
7164 unsigned long r_symndx;
7165 asection *sym_sec;
7166 struct elf_link_hash_entry *h;
7167 Elf_Internal_Sym *sym;
7168
7169 r_symndx = ELF64_R_SYM (rel->r_info);
7170 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7171 r_symndx, ibfd))
50bc7936
AM
7172 goto error_ret;
7173
1e2f5b6e
AM
7174 if (rel->r_offset == offset)
7175 {
50bc7936 7176 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ
7177
7178 /* See if the .opd entry is full 24 byte or
7179 16 byte (with fd_aux entry overlapped with next
7180 fd_func). */
7181 opd_ent_size = 24;
7182 if ((rel + 2 == relend && sec->size == offset + 16)
7183 || (rel + 3 < relend
7184 && rel[2].r_offset == offset + 16
7185 && rel[3].r_offset == offset + 24
7186 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7187 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7188 opd_ent_size = 16;
7189
4025353c
AM
7190 if (h != NULL
7191 && h->root.root.string[0] == '.')
c4f68ce3 7192 {
4dfe6ac6
NC
7193 struct ppc_link_hash_table *htab;
7194
7195 htab = ppc_hash_table (info);
7196 if (htab != NULL)
7197 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7198 htab);
c4f68ce3
AM
7199 if (fdh != NULL
7200 && fdh->elf.root.type != bfd_link_hash_defined
7201 && fdh->elf.root.type != bfd_link_hash_defweak)
7202 fdh = NULL;
7203 }
1e2f5b6e 7204
51020317
AM
7205 skip = (sym_sec->owner != ibfd
7206 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM
7207 if (skip)
7208 {
4025353c 7209 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM
7210 {
7211 /* Arrange for the function descriptor sym
7212 to be dropped. */
d6fe2dc1
AM
7213 fdh->elf.root.u.def.value = 0;
7214 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7215 }
74f0fb50 7216 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM
7217 }
7218 else
1e2f5b6e
AM
7219 {
7220 /* We'll be keeping this opd entry. */
7221
4025353c 7222 if (fdh != NULL)
1e2f5b6e 7223 {
754021d0
AM
7224 /* Redefine the function descriptor symbol to
7225 this location in the opd section. It is
7226 necessary to update the value here rather
7227 than using an array of adjustments as we do
7228 for local symbols, because various places
7229 in the generic ELF code use the value
7230 stored in u.def.value. */
3f764659 7231 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7232 fdh->adjust_done = 1;
1e2f5b6e 7233 }
754021d0
AM
7234
7235 /* Local syms are a bit tricky. We could
7236 tweak them as they can be cached, but
7237 we'd need to look through the local syms
7238 for the function descriptor sym which we
7239 don't have at the moment. So keep an
7240 array of adjustments. */
74f0fb50 7241 opd->adjust[rel->r_offset / 8]
3f764659 7242 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM
7243
7244 if (wptr != rptr)
3f764659
JJ
7245 memcpy (wptr, rptr, opd_ent_size);
7246 wptr += opd_ent_size;
7247 if (add_aux_fields && opd_ent_size == 16)
7248 {
7249 memset (wptr, '\0', 8);
7250 wptr += 8;
7251 }
1e2f5b6e 7252 }
3f764659
JJ
7253 rptr += opd_ent_size;
7254 offset += opd_ent_size;
1e2f5b6e
AM
7255 }
7256
50bc7936
AM
7257 if (skip)
7258 {
60124e18
AM
7259 if (!NO_OPD_RELOCS
7260 && !info->relocatable
18d944df
AM
7261 && !dec_dynrel_count (rel->r_info, sec, info,
7262 NULL, h, sym_sec))
8c1d1bb8 7263 goto error_ret;
50bc7936
AM
7264 }
7265 else
1e2f5b6e 7266 {
50bc7936
AM
7267 /* We need to adjust any reloc offsets to point to the
7268 new opd entries. While we're at it, we may as well
7269 remove redundant relocs. */
74f0fb50 7270 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM
7271 if (write_rel != rel)
7272 memcpy (write_rel, rel, sizeof (*rel));
7273 ++write_rel;
7274 }
7275 }
7276
3f764659 7277 sec->size = wptr - new_contents;
1e2f5b6e 7278 sec->reloc_count = write_rel - relstart;
3f764659
JJ
7279 if (add_aux_fields)
7280 {
7281 free (sec->contents);
7282 sec->contents = new_contents;
7283 }
7284
05bf9422 7285 /* Fudge the header size too, as this is used later in
cdcf6e38 7286 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS
7287 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7288 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7289 some_edited = TRUE;
1e2f5b6e 7290 }
6cdc0ccc 7291 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7292 free (relstart);
6cdc0ccc 7293
411e1bfb
AM
7294 if (local_syms != NULL
7295 && symtab_hdr->contents != (unsigned char *) local_syms)
7296 {
7297 if (!info->keep_memory)
7298 free (local_syms);
7299 else
7300 symtab_hdr->contents = (unsigned char *) local_syms;
7301 }
7302 }
7303
754021d0
AM
7304 if (some_edited)
7305 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7306
3f764659
JJ
7307 /* If we are doing a final link and the last .opd entry is just 16 byte
7308 long, add a 8 byte padding after it. */
7309 if (need_pad != NULL && !info->relocatable)
7310 {
7311 bfd_byte *p;
7312
7313 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7314 {
7315 BFD_ASSERT (need_pad->size > 0);
7316
7317 p = bfd_malloc (need_pad->size + 8);
7318 if (p == NULL)
7319 return FALSE;
699733f6 7320
3f764659
JJ
7321 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7322 p, 0, need_pad->size))
7323 return FALSE;
7324
7325 need_pad->contents = p;
7326 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7327 }
7328 else
7329 {
7330 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7331 if (p == NULL)
7332 return FALSE;
7333
7334 need_pad->contents = p;
7335 }
7336
7337 memset (need_pad->contents + need_pad->size, 0, 8);
7338 need_pad->size += 8;
7339 }
7340
411e1bfb
AM
7341 return TRUE;
7342}
7343
e1918d23 7344/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7345
e1918d23 7346asection *
33c0ec9d
AM
7347ppc64_elf_tls_setup (struct bfd_link_info *info,
7348 int no_tls_get_addr_opt,
7349 int *no_multi_toc)
411e1bfb 7350{
411e1bfb
AM
7351 struct ppc_link_hash_table *htab;
7352
411e1bfb 7353 htab = ppc_hash_table (info);
4dfe6ac6
NC
7354 if (htab == NULL)
7355 return NULL;
7356
33c0ec9d
AM
7357 if (*no_multi_toc)
7358 htab->do_multi_toc = 0;
7359 else if (!htab->do_multi_toc)
7360 *no_multi_toc = 1;
7361
3a71aa26
AM
7362 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7363 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7364 FALSE, FALSE, TRUE));
a7f2871e
AM
7365 /* Move dynamic linking info to the function descriptor sym. */
7366 if (htab->tls_get_addr != NULL)
7367 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM
7368 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7369 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7370 FALSE, FALSE, TRUE));
a7f2871e
AM
7371 if (!no_tls_get_addr_opt)
7372 {
7373 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7374
7375 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7376 FALSE, FALSE, TRUE);
7377 if (opt != NULL)
7378 func_desc_adjust (opt, info);
7379 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7380 FALSE, FALSE, TRUE);
7381 if (opt_fd != NULL
7382 && (opt_fd->root.type == bfd_link_hash_defined
7383 || opt_fd->root.type == bfd_link_hash_defweak))
7384 {
7385 /* If glibc supports an optimized __tls_get_addr call stub,
7386 signalled by the presence of __tls_get_addr_opt, and we'll
7387 be calling __tls_get_addr via a plt call stub, then
7388 make __tls_get_addr point to __tls_get_addr_opt. */
7389 tga_fd = &htab->tls_get_addr_fd->elf;
7390 if (htab->elf.dynamic_sections_created
7391 && tga_fd != NULL
7392 && (tga_fd->type == STT_FUNC
7393 || tga_fd->needs_plt)
7394 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7395 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7396 && tga_fd->root.type == bfd_link_hash_undefweak)))
7397 {
7398 struct plt_entry *ent;
7399
7400 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7401 if (ent->plt.refcount > 0)
7402 break;
7403 if (ent != NULL)
7404 {
7405 tga_fd->root.type = bfd_link_hash_indirect;
7406 tga_fd->root.u.i.link = &opt_fd->root;
7407 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7408 if (opt_fd->dynindx != -1)
7409 {
7410 /* Use __tls_get_addr_opt in dynamic relocations. */
7411 opt_fd->dynindx = -1;
7412 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7413 opt_fd->dynstr_index);
7414 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 7415 return NULL;
a7f2871e
AM
7416 }
7417 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7418 tga = &htab->tls_get_addr->elf;
7419 if (opt != NULL && tga != NULL)
7420 {
7421 tga->root.type = bfd_link_hash_indirect;
7422 tga->root.u.i.link = &opt->root;
7423 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7424 _bfd_elf_link_hash_hide_symbol (info, opt,
7425 tga->forced_local);
7426 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7427 }
7428 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7429 htab->tls_get_addr_fd->is_func_descriptor = 1;
7430 if (htab->tls_get_addr != NULL)
7431 {
7432 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7433 htab->tls_get_addr->is_func = 1;
7434 }
7435 }
7436 }
7437 }
7438 else
7439 no_tls_get_addr_opt = TRUE;
7440 }
7441 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
33c0ec9d 7442 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 7443}
8387904d 7444
3a71aa26
AM
7445/* Return TRUE iff REL is a branch reloc with a global symbol matching
7446 HASH1 or HASH2. */
8387904d 7447
3a71aa26
AM
7448static bfd_boolean
7449branch_reloc_hash_match (const bfd *ibfd,
7450 const Elf_Internal_Rela *rel,
7451 const struct ppc_link_hash_entry *hash1,
7452 const struct ppc_link_hash_entry *hash2)
7453{
7454 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7455 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7456 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7457
e054468f 7458 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 7459 {
3a71aa26
AM
7460 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7461 struct elf_link_hash_entry *h;
8387904d 7462
3a71aa26 7463 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7464 h = elf_follow_link (h);
3a71aa26
AM
7465 if (h == &hash1->elf || h == &hash2->elf)
7466 return TRUE;
a48ebf4d 7467 }
3a71aa26 7468 return FALSE;
951fd09b 7469}
411e1bfb 7470
951fd09b
AM
7471/* Run through all the TLS relocs looking for optimization
7472 opportunities. The linker has been hacked (see ppc64elf.em) to do
7473 a preliminary section layout so that we know the TLS segment
7474 offsets. We can't optimize earlier because some optimizations need
7475 to know the tp offset, and we need to optimize before allocating
7476 dynamic relocations. */
7477
7478bfd_boolean
33c0ec9d 7479ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM
7480{
7481 bfd *ibfd;
7482 asection *sec;
7483 struct ppc_link_hash_table *htab;
663a1470 7484 unsigned char *toc_ref;
102890f0 7485 int pass;
951fd09b 7486
1d483afe 7487 if (info->relocatable || !info->executable)
411e1bfb
AM
7488 return TRUE;
7489
951fd09b 7490 htab = ppc_hash_table (info);
4dfe6ac6
NC
7491 if (htab == NULL)
7492 return FALSE;
7493
663a1470
AM
7494 /* Make two passes over the relocs. On the first pass, mark toc
7495 entries involved with tls relocs, and check that tls relocs
7496 involved in setting up a tls_get_addr call are indeed followed by
7497 such a call. If they are not, we can't do any tls optimization.
7498 On the second pass twiddle tls_mask flags to notify
7499 relocate_section that optimization can be done, and adjust got
7500 and plt refcounts. */
7501 toc_ref = NULL;
7502 for (pass = 0; pass < 2; ++pass)
7503 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7504 {
7505 Elf_Internal_Sym *locsyms = NULL;
7506 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7507
102890f0
AM
7508 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7509 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7510 {
7511 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 7512 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 7513
102890f0
AM
7514 /* Read the relocations. */
7515 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7516 info->keep_memory);
7517 if (relstart == NULL)
7518 return FALSE;
411e1bfb 7519
102890f0
AM
7520 relend = relstart + sec->reloc_count;
7521 for (rel = relstart; rel < relend; rel++)
7522 {
7523 enum elf_ppc64_reloc_type r_type;
7524 unsigned long r_symndx;
7525 struct elf_link_hash_entry *h;
7526 Elf_Internal_Sym *sym;
7527 asection *sym_sec;
f961d9dd
AM
7528 unsigned char *tls_mask;
7529 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM
7530 bfd_vma value;
7531 bfd_boolean ok_tprel, is_local;
7532 long toc_ref_index = 0;
7533 int expecting_tls_get_addr = 0;
663a1470 7534 bfd_boolean ret = FALSE;
411e1bfb 7535
102890f0
AM
7536 r_symndx = ELF64_R_SYM (rel->r_info);
7537 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7538 r_symndx, ibfd))
7539 {
7540 err_free_rel:
7541 if (elf_section_data (sec)->relocs != relstart)
7542 free (relstart);
7543 if (toc_ref != NULL)
7544 free (toc_ref);
7545 if (locsyms != NULL
0ffa91dd 7546 && (elf_symtab_hdr (ibfd).contents
102890f0
AM
7547 != (unsigned char *) locsyms))
7548 free (locsyms);
663a1470 7549 return ret;
102890f0 7550 }
411e1bfb 7551
102890f0
AM
7552 if (h != NULL)
7553 {
766bc656
AM
7554 if (h->root.type == bfd_link_hash_defined
7555 || h->root.type == bfd_link_hash_defweak)
7556 value = h->root.u.def.value;
7557 else if (h->root.type == bfd_link_hash_undefweak)
7558 value = 0;
7559 else
663a1470
AM
7560 {
7561 found_tls_get_addr_arg = 0;
7562 continue;
7563 }
102890f0
AM
7564 }
7565 else
7566 /* Symbols referenced by TLS relocs must be of type
7567 STT_TLS. So no need for .opd local sym adjust. */
7568 value = sym->st_value;
7569
7570 ok_tprel = FALSE;
7571 is_local = FALSE;
7572 if (h == NULL
7573 || !h->def_dynamic)
7574 {
7575 is_local = TRUE;
766bc656
AM
7576 if (h != NULL
7577 && h->root.type == bfd_link_hash_undefweak)
7578 ok_tprel = TRUE;
7579 else
7580 {
7581 value += sym_sec->output_offset;
7582 value += sym_sec->output_section->vma;
7583 value -= htab->elf.tls_sec->vma;
7584 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7585 < (bfd_vma) 1 << 32);
7586 }
102890f0 7587 }
951fd09b 7588
102890f0 7589 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM
7590 /* If this section has old-style __tls_get_addr calls
7591 without marker relocs, then check that each
7592 __tls_get_addr call reloc is preceded by a reloc
7593 that conceivably belongs to the __tls_get_addr arg
7594 setup insn. If we don't find matching arg setup
7595 relocs, don't do any tls optimization. */
7596 if (pass == 0
7597 && sec->has_tls_get_addr_call
7598 && h != NULL
7599 && (h == &htab->tls_get_addr->elf
7600 || h == &htab->tls_get_addr_fd->elf)
7601 && !found_tls_get_addr_arg
7602 && is_branch_reloc (r_type))
7603 {
25f53a85 7604 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM
7605 "TLS optimization disabled\n"),
7606 ibfd, sec, rel->r_offset);
7607 ret = TRUE;
7608 goto err_free_rel;
7609 }
7610
7611 found_tls_get_addr_arg = 0;
102890f0
AM
7612 switch (r_type)
7613 {
7614 case R_PPC64_GOT_TLSLD16:
7615 case R_PPC64_GOT_TLSLD16_LO:
7616 expecting_tls_get_addr = 1;
663a1470 7617 found_tls_get_addr_arg = 1;
102890f0
AM
7618 /* Fall thru */
7619
7620 case R_PPC64_GOT_TLSLD16_HI:
7621 case R_PPC64_GOT_TLSLD16_HA:
7622 /* These relocs should never be against a symbol
7623 defined in a shared lib. Leave them alone if
7624 that turns out to be the case. */
7625 if (!is_local)
7626 continue;
411e1bfb 7627
102890f0 7628 /* LD -> LE */
411e1bfb 7629 tls_set = 0;
102890f0
AM
7630 tls_clear = TLS_LD;
7631 tls_type = TLS_TLS | TLS_LD;
7632 break;
411e1bfb 7633
102890f0
AM
7634 case R_PPC64_GOT_TLSGD16:
7635 case R_PPC64_GOT_TLSGD16_LO:
7636 expecting_tls_get_addr = 1;
663a1470 7637 found_tls_get_addr_arg = 1;
102890f0
AM
7638 /* Fall thru */
7639
7640 case R_PPC64_GOT_TLSGD16_HI:
7641 case R_PPC64_GOT_TLSGD16_HA:
7642 if (ok_tprel)
7643 /* GD -> LE */
411e1bfb 7644 tls_set = 0;
102890f0
AM
7645 else
7646 /* GD -> IE */
7647 tls_set = TLS_TLS | TLS_TPRELGD;
7648 tls_clear = TLS_GD;
7649 tls_type = TLS_TLS | TLS_GD;
7650 break;
7651
7652 case R_PPC64_GOT_TPREL16_DS:
7653 case R_PPC64_GOT_TPREL16_LO_DS:
7654 case R_PPC64_GOT_TPREL16_HI:
7655 case R_PPC64_GOT_TPREL16_HA:
7656 if (ok_tprel)
7657 {
7658 /* IE -> LE */
7659 tls_set = 0;
7660 tls_clear = TLS_TPREL;
7661 tls_type = TLS_TLS | TLS_TPREL;
7662 break;
7663 }
411e1bfb
AM
7664 continue;
7665
727fc41e
AM
7666 case R_PPC64_TLSGD:
7667 case R_PPC64_TLSLD:
663a1470
AM
7668 found_tls_get_addr_arg = 1;
7669 /* Fall thru */
7670
7671 case R_PPC64_TLS:
7672 case R_PPC64_TOC16:
7673 case R_PPC64_TOC16_LO:
102890f0
AM
7674 if (sym_sec == NULL || sym_sec != toc)
7675 continue;
7676
7677 /* Mark this toc entry as referenced by a TLS
7678 code sequence. We can do that now in the
7679 case of R_PPC64_TLS, and after checking for
7680 tls_get_addr for the TOC16 relocs. */
7681 if (toc_ref == NULL)
663a1470
AM
7682 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7683 if (toc_ref == NULL)
7684 goto err_free_rel;
7685
102890f0
AM
7686 if (h != NULL)
7687 value = h->root.u.def.value;
7688 else
7689 value = sym->st_value;
7690 value += rel->r_addend;
7691 BFD_ASSERT (value < toc->size && value % 8 == 0);
663a1470 7692 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM
7693 if (r_type == R_PPC64_TLS
7694 || r_type == R_PPC64_TLSGD
7695 || r_type == R_PPC64_TLSLD)
102890f0
AM
7696 {
7697 toc_ref[toc_ref_index] = 1;
7698 continue;
7699 }
7700
7701 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7702 continue;
7703
7704 tls_set = 0;
7705 tls_clear = 0;
7706 expecting_tls_get_addr = 2;
7707 break;
7708
7709 case R_PPC64_TPREL64:
7710 if (pass == 0
7711 || sec != toc
7712 || toc_ref == NULL
663a1470 7713 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM
7714 continue;
7715 if (ok_tprel)
7716 {
7717 /* IE -> LE */
7718 tls_set = TLS_EXPLICIT;
7719 tls_clear = TLS_TPREL;
7720 break;
7721 }
7722 continue;
7723
7724 case R_PPC64_DTPMOD64:
7725 if (pass == 0
7726 || sec != toc
7727 || toc_ref == NULL
663a1470 7728 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM
7729 continue;
7730 if (rel + 1 < relend
7731 && (rel[1].r_info
7732 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7733 && rel[1].r_offset == rel->r_offset + 8)
7734 {
7735 if (ok_tprel)
7736 /* GD -> LE */
7737 tls_set = TLS_EXPLICIT | TLS_GD;
7738 else
7739 /* GD -> IE */
7740 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7741 tls_clear = TLS_GD;
7742 }
7743 else
7744 {
7745 if (!is_local)
7746 continue;
7747
7748 /* LD -> LE */
7749 tls_set = TLS_EXPLICIT;
7750 tls_clear = TLS_LD;
7751 }
7752 break;
7753
7754 default:
7755 continue;
7756 }
7757
7758 if (pass == 0)
7759 {
727fc41e
AM
7760 if (!expecting_tls_get_addr
7761 || !sec->has_tls_get_addr_call)
102890f0
AM
7762 continue;
7763
3a71aa26
AM
7764 if (rel + 1 < relend
7765 && branch_reloc_hash_match (ibfd, rel + 1,
7766 htab->tls_get_addr,
7767 htab->tls_get_addr_fd))
102890f0 7768 {
3a71aa26 7769 if (expecting_tls_get_addr == 2)
102890f0 7770 {
3a71aa26 7771 /* Check for toc tls entries. */
f961d9dd 7772 unsigned char *toc_tls;
3a71aa26
AM
7773 int retval;
7774
7775 retval = get_tls_mask (&toc_tls, NULL, NULL,
7776 &locsyms,
7777 rel, ibfd);
7778 if (retval == 0)
7779 goto err_free_rel;
663a1470
AM
7780 if (toc_tls != NULL)
7781 {
7782 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7783 found_tls_get_addr_arg = 1;
7784 if (retval > 1)
7785 toc_ref[toc_ref_index] = 1;
7786 }
102890f0 7787 }
3a71aa26 7788 continue;
102890f0
AM
7789 }
7790
7791 if (expecting_tls_get_addr != 1)
7792 continue;
7793
7794 /* Uh oh, we didn't find the expected call. We
7795 could just mark this symbol to exclude it
7796 from tls optimization but it's safer to skip
663a1470 7797 the entire optimization. */
25f53a85 7798 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
7799 "TLS optimization disabled\n"),
7800 ibfd, sec, rel->r_offset);
7801 ret = TRUE;
7802 goto err_free_rel;
102890f0
AM
7803 }
7804
85f7a9cb 7805 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM
7806 {
7807 struct plt_entry *ent;
7808 for (ent = htab->tls_get_addr->elf.plt.plist;
7809 ent != NULL;
7810 ent = ent->next)
7811 if (ent->addend == 0)
411e1bfb 7812 {
102890f0 7813 if (ent->plt.refcount > 0)
30038c59 7814 {
102890f0
AM
7815 ent->plt.refcount -= 1;
7816 expecting_tls_get_addr = 0;
30038c59 7817 }
102890f0 7818 break;
411e1bfb 7819 }
102890f0 7820 }
411e1bfb 7821
85f7a9cb 7822 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM
7823 {
7824 struct plt_entry *ent;
7825 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7826 ent != NULL;
7827 ent = ent->next)
7828 if (ent->addend == 0)
411e1bfb 7829 {
102890f0
AM
7830 if (ent->plt.refcount > 0)
7831 ent->plt.refcount -= 1;
7832 break;
411e1bfb 7833 }
102890f0 7834 }
411e1bfb 7835
102890f0 7836 if (tls_clear == 0)
30038c59
AM
7837 continue;
7838
102890f0
AM
7839 if ((tls_set & TLS_EXPLICIT) == 0)
7840 {
7841 struct got_entry *ent;
411e1bfb 7842
102890f0
AM
7843 /* Adjust got entry for this reloc. */
7844 if (h != NULL)
7845 ent = h->got.glist;
7846 else
7847 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7848
102890f0
AM
7849 for (; ent != NULL; ent = ent->next)
7850 if (ent->addend == rel->r_addend
7851 && ent->owner == ibfd
7852 && ent->tls_type == tls_type)
7853 break;
7854 if (ent == NULL)
7855 abort ();
411e1bfb 7856
102890f0
AM
7857 if (tls_set == 0)
7858 {
7859 /* We managed to get rid of a got entry. */
7860 if (ent->got.refcount > 0)
7861 ent->got.refcount -= 1;
7862 }
7863 }
7864 else
7865 {
7866 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7867 we'll lose one or two dyn relocs. */
7868 if (!dec_dynrel_count (rel->r_info, sec, info,
7869 NULL, h, sym_sec))
7870 return FALSE;
411e1bfb 7871
102890f0
AM
7872 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7873 {
7874 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7875 NULL, h, sym_sec))
7876 return FALSE;
7877 }
7878 }
411e1bfb 7879
102890f0
AM
7880 *tls_mask |= tls_set;
7881 *tls_mask &= ~tls_clear;
7882 }
8c1d1bb8 7883
102890f0
AM
7884 if (elf_section_data (sec)->relocs != relstart)
7885 free (relstart);
7886 }
411e1bfb 7887
663a1470
AM
7888 if (locsyms != NULL
7889 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7890 {
7891 if (!info->keep_memory)
7892 free (locsyms);
7893 else
7894 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7895 }
7896 }
411e1bfb 7897
663a1470
AM
7898 if (toc_ref != NULL)
7899 free (toc_ref);
b34976b6 7900 return TRUE;
1e2f5b6e 7901}
b34976b6 7902
c5614fa4
AM
7903/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7904 the values of any global symbols in a toc section that has been
7905 edited. Globals in toc sections should be a rarity, so this function
7906 sets a flag if any are found in toc sections other than the one just
7907 edited, so that futher hash table traversals can be avoided. */
7908
7909struct adjust_toc_info
7910{
7911 asection *toc;
7912 unsigned long *skip;
7913 bfd_boolean global_toc_syms;
7914};
7915
ba761f19
AM
7916enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
7917
c5614fa4
AM
7918static bfd_boolean
7919adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7920{
7921 struct ppc_link_hash_entry *eh;
7922 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 7923 unsigned long i;
c5614fa4
AM
7924
7925 if (h->root.type == bfd_link_hash_indirect)
7926 return TRUE;
7927
7928 if (h->root.type == bfd_link_hash_warning)
7929 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7930
7931 if (h->root.type != bfd_link_hash_defined
7932 && h->root.type != bfd_link_hash_defweak)
7933 return TRUE;
7934
7935 eh = (struct ppc_link_hash_entry *) h;
7936 if (eh->adjust_done)
7937 return TRUE;
7938
7939 if (eh->elf.root.u.def.section == toc_inf->toc)
7940 {
854b41e7
AM
7941 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
7942 i = toc_inf->toc->rawsize >> 3;
c5614fa4 7943 else
854b41e7
AM
7944 i = eh->elf.root.u.def.value >> 3;
7945
ba761f19 7946 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM
7947 {
7948 (*_bfd_error_handler)
854b41e7
AM
7949 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
7950 do
7951 ++i;
ba761f19 7952 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 7953 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 7954 }
854b41e7
AM
7955
7956 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM
7957 eh->adjust_done = 1;
7958 }
7959 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7960 toc_inf->global_toc_syms = TRUE;
7961
7962 return TRUE;
7963}
7964
7965/* Examine all relocs referencing .toc sections in order to remove
7966 unused .toc entries. */
7967
7968bfd_boolean
33c0ec9d 7969ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM
7970{
7971 bfd *ibfd;
7972 struct adjust_toc_info toc_inf;
67f0cbdb 7973 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 7974
67f0cbdb 7975 htab->do_toc_opt = 1;
c5614fa4
AM
7976 toc_inf.global_toc_syms = TRUE;
7977 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7978 {
7979 asection *toc, *sec;
7980 Elf_Internal_Shdr *symtab_hdr;
7981 Elf_Internal_Sym *local_syms;
425b145b 7982 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM
7983 unsigned long *skip, *drop;
7984 unsigned char *used;
7985 unsigned char *keep, last, some_unused;
7986
854b41e7
AM
7987 if (!is_ppc64_elf (ibfd))
7988 continue;
7989
c5614fa4
AM
7990 toc = bfd_get_section_by_name (ibfd, ".toc");
7991 if (toc == NULL
92b7a70f 7992 || toc->size == 0
c5614fa4
AM
7993 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7994 || elf_discarded_section (toc))
7995 continue;
7996
425b145b 7997 toc_relocs = NULL;
c5614fa4 7998 local_syms = NULL;
0ffa91dd 7999 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM
8000
8001 /* Look at sections dropped from the final link. */
8002 skip = NULL;
8003 relstart = NULL;
8004 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8005 {
8006 if (sec->reloc_count == 0
8007 || !elf_discarded_section (sec)
8008 || get_opd_info (sec)
8009 || (sec->flags & SEC_ALLOC) == 0
8010 || (sec->flags & SEC_DEBUGGING) != 0)
8011 continue;
8012
8013 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8014 if (relstart == NULL)
8015 goto error_ret;
8016
8017 /* Run through the relocs to see which toc entries might be
8018 unused. */
8019 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8020 {
8021 enum elf_ppc64_reloc_type r_type;
8022 unsigned long r_symndx;
8023 asection *sym_sec;
8024 struct elf_link_hash_entry *h;
8025 Elf_Internal_Sym *sym;
8026 bfd_vma val;
8027
8028 r_type = ELF64_R_TYPE (rel->r_info);
8029 switch (r_type)
8030 {
8031 default:
8032 continue;
8033
8034 case R_PPC64_TOC16:
8035 case R_PPC64_TOC16_LO:
8036 case R_PPC64_TOC16_HI:
8037 case R_PPC64_TOC16_HA:
8038 case R_PPC64_TOC16_DS:
8039 case R_PPC64_TOC16_LO_DS:
8040 break;
8041 }
8042
8043 r_symndx = ELF64_R_SYM (rel->r_info);
8044 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8045 r_symndx, ibfd))
8046 goto error_ret;
8047
8048 if (sym_sec != toc)
8049 continue;
8050
8051 if (h != NULL)
8052 val = h->root.u.def.value;
8053 else
8054 val = sym->st_value;
8055 val += rel->r_addend;
8056
8057 if (val >= toc->size)
8058 continue;
8059
8060 /* Anything in the toc ought to be aligned to 8 bytes.
8061 If not, don't mark as unused. */
8062 if (val & 7)
8063 continue;
8064
8065 if (skip == NULL)
8066 {
854b41e7 8067 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM
8068 if (skip == NULL)
8069 goto error_ret;
8070 }
8071
ba761f19 8072 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM
8073 }
8074
8075 if (elf_section_data (sec)->relocs != relstart)
8076 free (relstart);
8077 }
8078
ba761f19
AM
8079 /* For largetoc loads of address constants, we can convert
8080 . addis rx,2,addr@got@ha
8081 . ld ry,addr@got@l(rx)
8082 to
8083 . addis rx,2,addr@toc@ha
8084 . addi ry,rx,addr@toc@l
8085 when addr is within 2G of the toc pointer. This then means
8086 that the word storing "addr" in the toc is no longer needed. */
8087
8088 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8089 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8090 && toc->reloc_count != 0)
8091 {
8092 /* Read toc relocs. */
425b145b
AM
8093 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8094 info->keep_memory);
8095 if (toc_relocs == NULL)
ba761f19
AM
8096 goto error_ret;
8097
425b145b 8098 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM
8099 {
8100 enum elf_ppc64_reloc_type r_type;
8101 unsigned long r_symndx;
8102 asection *sym_sec;
8103 struct elf_link_hash_entry *h;
8104 Elf_Internal_Sym *sym;
8105 bfd_vma val, addr;
8106
8107 r_type = ELF64_R_TYPE (rel->r_info);
8108 if (r_type != R_PPC64_ADDR64)
8109 continue;
8110
8111 r_symndx = ELF64_R_SYM (rel->r_info);
8112 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8113 r_symndx, ibfd))
8114 goto error_ret;
8115
425b145b
AM
8116 if (sym_sec == NULL
8117 || elf_discarded_section (sym_sec))
8118 continue;
8119
726d3ab0 8120 if (!SYMBOL_CALLS_LOCAL (info, h))
ba761f19
AM
8121 continue;
8122
8123 if (h != NULL)
bddc25c9
AM
8124 {
8125 if (h->type == STT_GNU_IFUNC)
8126 continue;
8127 val = h->root.u.def.value;
8128 }
ba761f19 8129 else
bddc25c9
AM
8130 {
8131 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8132 continue;
8133 val = sym->st_value;
8134 }
ba761f19
AM
8135 val += rel->r_addend;
8136 val += sym_sec->output_section->vma + sym_sec->output_offset;
8137
8138 /* We don't yet know the exact toc pointer value, but we
8139 know it will be somewhere in the toc section. Don't
8140 optimize if the difference from any possible toc
8141 pointer is outside [ff..f80008000, 7fff7fff]. */
8142 addr = toc->output_section->vma + TOC_BASE_OFF;
8143 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8144 continue;
8145
8146 addr = toc->output_section->vma + toc->output_section->rawsize;
8147 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8148 continue;
8149
8150 if (skip == NULL)
8151 {
8152 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8153 if (skip == NULL)
8154 goto error_ret;
8155 }
8156
8157 skip[rel->r_offset >> 3]
425b145b 8158 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8159 }
ba761f19
AM
8160 }
8161
c5614fa4
AM
8162 if (skip == NULL)
8163 continue;
8164
8165 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8166 if (used == NULL)
8167 {
8168 error_ret:
8169 if (local_syms != NULL
8170 && symtab_hdr->contents != (unsigned char *) local_syms)
8171 free (local_syms);
8172 if (sec != NULL
8173 && relstart != NULL
8174 && elf_section_data (sec)->relocs != relstart)
8175 free (relstart);
425b145b
AM
8176 if (toc_relocs != NULL
8177 && elf_section_data (toc)->relocs != toc_relocs)
8178 free (toc_relocs);
c5614fa4
AM
8179 if (skip != NULL)
8180 free (skip);
8181 return FALSE;
8182 }
8183
30038c59
AM
8184 /* Now check all kept sections that might reference the toc.
8185 Check the toc itself last. */
8186 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8187 : ibfd->sections);
c5614fa4 8188 sec != NULL;
c5614fa4 8189 sec = (sec == toc ? NULL
c5614fa4 8190 : sec->next == NULL ? toc
30038c59 8191 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM
8192 : sec->next))
8193 {
8194 int repeat;
8195
8196 if (sec->reloc_count == 0
8197 || elf_discarded_section (sec)
8198 || get_opd_info (sec)
8199 || (sec->flags & SEC_ALLOC) == 0
8200 || (sec->flags & SEC_DEBUGGING) != 0)
8201 continue;
8202
854b41e7
AM
8203 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8204 info->keep_memory);
c5614fa4
AM
8205 if (relstart == NULL)
8206 goto error_ret;
8207
8208 /* Mark toc entries referenced as used. */
8209 repeat = 0;
8210 do
8211 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8212 {
8213 enum elf_ppc64_reloc_type r_type;
8214 unsigned long r_symndx;
8215 asection *sym_sec;
8216 struct elf_link_hash_entry *h;
8217 Elf_Internal_Sym *sym;
8218 bfd_vma val;
8219
8220 r_type = ELF64_R_TYPE (rel->r_info);
8221 switch (r_type)
8222 {
8223 case R_PPC64_TOC16:
8224 case R_PPC64_TOC16_LO:
8225 case R_PPC64_TOC16_HI:
8226 case R_PPC64_TOC16_HA:
8227 case R_PPC64_TOC16_DS:
8228 case R_PPC64_TOC16_LO_DS:
8229 /* In case we're taking addresses of toc entries. */
8230 case R_PPC64_ADDR64:
8231 break;
8232
8233 default:
8234 continue;
8235 }
8236
8237 r_symndx = ELF64_R_SYM (rel->r_info);
8238 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8239 r_symndx, ibfd))
8240 {
8241 free (used);
8242 goto error_ret;
8243 }
8244
8245 if (sym_sec != toc)
8246 continue;
8247
8248 if (h != NULL)
8249 val = h->root.u.def.value;
8250 else
8251 val = sym->st_value;
8252 val += rel->r_addend;
8253
8254 if (val >= toc->size)
8255 continue;
8256
ba761f19
AM
8257 if ((skip[val >> 3] & can_optimize) != 0)
8258 {
8259 bfd_vma off;
8260 unsigned char opc;
8261
8262 switch (r_type)
8263 {
8264 case R_PPC64_TOC16_HA:
8265 break;
8266
8267 case R_PPC64_TOC16_LO_DS:
8268 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8269 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8270 return FALSE;
8271 if ((opc & (0x3f << 2)) == (58u << 2))
8272 break;
8273 /* Fall thru */
8274
8275 default:
8276 /* Wrong sort of reloc, or not a ld. We may
8277 as well clear ref_from_discarded too. */
8278 skip[val >> 3] = 0;
8279 }
8280 }
8281
c5614fa4
AM
8282 /* For the toc section, we only mark as used if
8283 this entry itself isn't unused. */
8284 if (sec == toc
8285 && !used[val >> 3]
8286 && (used[rel->r_offset >> 3]
ba761f19 8287 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
c5614fa4
AM
8288 /* Do all the relocs again, to catch reference
8289 chains. */
8290 repeat = 1;
8291
8292 used[val >> 3] = 1;
8293 }
8294 while (repeat);
854b41e7
AM
8295
8296 if (elf_section_data (sec)->relocs != relstart)
8297 free (relstart);
c5614fa4
AM
8298 }
8299
8300 /* Merge the used and skip arrays. Assume that TOC
8301 doublewords not appearing as either used or unused belong
8302 to to an entry more than one doubleword in size. */
8303 for (drop = skip, keep = used, last = 0, some_unused = 0;
8304 drop < skip + (toc->size + 7) / 8;
8305 ++drop, ++keep)
8306 {
8307 if (*keep)
8308 {
ba761f19
AM
8309 *drop &= ~ref_from_discarded;
8310 if ((*drop & can_optimize) != 0)
8311 some_unused = 1;
c5614fa4
AM
8312 last = 0;
8313 }
8314 else if (*drop)
8315 {
8316 some_unused = 1;
ba761f19 8317 last = ref_from_discarded;
c5614fa4
AM
8318 }
8319 else
8320 *drop = last;
8321 }
8322
8323 free (used);
8324
8325 if (some_unused)
8326 {
8327 bfd_byte *contents, *src;
8328 unsigned long off;
d62b3684 8329 Elf_Internal_Sym *sym;
ba761f19 8330 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM
8331
8332 /* Shuffle the toc contents, and at the same time convert the
8333 skip array from booleans into offsets. */
8334 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8335 goto error_ret;
8336
8337 elf_section_data (toc)->this_hdr.contents = contents;
8338
8339 for (src = contents, off = 0, drop = skip;
8340 src < contents + toc->size;
8341 src += 8, ++drop)
8342 {
ba761f19
AM
8343 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8344 off += 8;
c5614fa4
AM
8345 else if (off != 0)
8346 {
8347 *drop = off;
8348 memcpy (src - off, src, 8);
8349 }
8350 }
854b41e7 8351 *drop = off;
c5614fa4
AM
8352 toc->rawsize = toc->size;
8353 toc->size = src - contents - off;
8354
ba761f19
AM
8355 /* Adjust addends for relocs against the toc section sym,
8356 and optimize any accesses we can. */
c5614fa4
AM
8357 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8358 {
8359 if (sec->reloc_count == 0
8360 || elf_discarded_section (sec))
8361 continue;
8362
8363 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 8364 info->keep_memory);
c5614fa4
AM
8365 if (relstart == NULL)
8366 goto error_ret;
8367
8368 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8369 {
8370 enum elf_ppc64_reloc_type r_type;
8371 unsigned long r_symndx;
8372 asection *sym_sec;
8373 struct elf_link_hash_entry *h;
854b41e7 8374 bfd_vma val;
c5614fa4
AM
8375
8376 r_type = ELF64_R_TYPE (rel->r_info);
8377 switch (r_type)
8378 {
8379 default:
8380 continue;
8381
8382 case R_PPC64_TOC16:
8383 case R_PPC64_TOC16_LO:
8384 case R_PPC64_TOC16_HI:
8385 case R_PPC64_TOC16_HA:
8386 case R_PPC64_TOC16_DS:
8387 case R_PPC64_TOC16_LO_DS:
8388 case R_PPC64_ADDR64:
8389 break;
8390 }
8391
8392 r_symndx = ELF64_R_SYM (rel->r_info);
8393 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8394 r_symndx, ibfd))
8395 goto error_ret;
8396
ba761f19 8397 if (sym_sec != toc)
c5614fa4
AM
8398 continue;
8399
ba761f19
AM
8400 if (h != NULL)
8401 val = h->root.u.def.value;
8402 else
8403 {
8404 val = sym->st_value;
8405 if (val != 0)
8406 local_toc_syms = TRUE;
8407 }
8408
8409 val += rel->r_addend;
854b41e7
AM
8410
8411 if (val > toc->rawsize)
8412 val = toc->rawsize;
ba761f19
AM
8413 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8414 continue;
8415 else if ((skip[val >> 3] & can_optimize) != 0)
8416 {
8417 Elf_Internal_Rela *tocrel
425b145b 8418 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM
8419 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8420
8421 switch (r_type)
8422 {
8423 case R_PPC64_TOC16_HA:
8424 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8425 break;
8426
8427 case R_PPC64_TOC16_LO_DS:
8428 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8429 break;
8430
8431 default:
8432 abort ();
8433 }
8434 rel->r_addend = tocrel->r_addend;
8435 elf_section_data (sec)->relocs = relstart;
8436 continue;
8437 }
8438
8439 if (h != NULL || sym->st_value != 0)
8440 continue;
854b41e7
AM
8441
8442 rel->r_addend -= skip[val >> 3];
8443 elf_section_data (sec)->relocs = relstart;
c5614fa4 8444 }
854b41e7
AM
8445
8446 if (elf_section_data (sec)->relocs != relstart)
8447 free (relstart);
c5614fa4
AM
8448 }
8449
8450 /* We shouldn't have local or global symbols defined in the TOC,
8451 but handle them anyway. */
df22d223
AM
8452 if (local_syms != NULL)
8453 for (sym = local_syms;
8454 sym < local_syms + symtab_hdr->sh_info;
8455 ++sym)
8456 if (sym->st_value != 0
8457 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8458 {
8459 unsigned long i;
854b41e7 8460
df22d223
AM
8461 if (sym->st_value > toc->rawsize)
8462 i = toc->rawsize >> 3;
8463 else
8464 i = sym->st_value >> 3;
854b41e7 8465
df22d223
AM
8466 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8467 {
8468 if (local_toc_syms)
8469 (*_bfd_error_handler)
8470 (_("%s defined on removed toc entry"),
8471 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8472 do
8473 ++i;
8474 while ((skip[i] & (ref_from_discarded | can_optimize)));
8475 sym->st_value = (bfd_vma) i << 3;
8476 }
d62b3684 8477
df22d223
AM
8478 sym->st_value -= skip[i];
8479 symtab_hdr->contents = (unsigned char *) local_syms;
8480 }
c5614fa4 8481
854b41e7 8482 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM
8483 if (toc_inf.global_toc_syms)
8484 {
8485 toc_inf.toc = toc;
8486 toc_inf.skip = skip;
8487 toc_inf.global_toc_syms = FALSE;
8488 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8489 &toc_inf);
8490 }
854b41e7
AM
8491
8492 if (toc->reloc_count != 0)
8493 {
d4730f92 8494 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM
8495 Elf_Internal_Rela *wrel;
8496 bfd_size_type sz;
8497
854b41e7 8498 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM
8499 if (toc_relocs == NULL)
8500 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8501 info->keep_memory);
8502 if (toc_relocs == NULL)
8503 goto error_ret;
8504
425b145b
AM
8505 wrel = toc_relocs;
8506 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM
8507 if ((skip[rel->r_offset >> 3]
8508 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM
8509 {
8510 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8511 wrel->r_info = rel->r_info;
8512 wrel->r_addend = rel->r_addend;
8513 ++wrel;
8514 }
8515 else if (!dec_dynrel_count (rel->r_info, toc, info,
8516 &local_syms, NULL, NULL))
8517 goto error_ret;
8518
425b145b
AM
8519 elf_section_data (toc)->relocs = toc_relocs;
8520 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS
8521 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8522 sz = rel_hdr->sh_entsize;
8523 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 8524 }
c5614fa4 8525 }
28be611c
AM
8526 else if (toc_relocs != NULL
8527 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 8528 free (toc_relocs);
c5614fa4
AM
8529
8530 if (local_syms != NULL
8531 && symtab_hdr->contents != (unsigned char *) local_syms)
8532 {
8533 if (!info->keep_memory)
8534 free (local_syms);
8535 else
8536 symtab_hdr->contents = (unsigned char *) local_syms;
8537 }
8538 free (skip);
8539 }
8540
8541 return TRUE;
8542}
8543
1bbe0902
AM
8544/* Return true iff input section I references the TOC using
8545 instructions limited to +/-32k offsets. */
8546
8547bfd_boolean
8548ppc64_elf_has_small_toc_reloc (asection *i)
8549{
8550 return (is_ppc64_elf (i->owner)
8551 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8552}
8553
927be08e
AM
8554/* Allocate space for one GOT entry. */
8555
8556static void
8557allocate_got (struct elf_link_hash_entry *h,
8558 struct bfd_link_info *info,
8559 struct got_entry *gent)
8560{
8561 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8562 bfd_boolean dyn;
8563 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8564 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8565 ? 16 : 8);
8566 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8567 ? 2 : 1) * sizeof (Elf64_External_Rela);
8568 asection *got = ppc64_elf_tdata (gent->owner)->got;
8569
8570 gent->got.offset = got->size;
8571 got->size += entsize;
8572
8573 dyn = htab->elf.dynamic_sections_created;
8574 if ((info->shared
8575 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8576 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8577 || h->root.type != bfd_link_hash_undefweak))
8578 {
8579 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8580 relgot->size += rentsize;
8581 }
8582 else if (h->type == STT_GNU_IFUNC)
8583 {
8584 asection *relgot = htab->reliplt;
8585 relgot->size += rentsize;
8586 htab->got_reli_size += rentsize;
8587 }
8588}
8589
7865406b
AM
8590/* This function merges got entries in the same toc group. */
8591
8592static void
8593merge_got_entries (struct got_entry **pent)
8594{
8595 struct got_entry *ent, *ent2;
8596
8597 for (ent = *pent; ent != NULL; ent = ent->next)
8598 if (!ent->is_indirect)
8599 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8600 if (!ent2->is_indirect
8601 && ent2->addend == ent->addend
8602 && ent2->tls_type == ent->tls_type
8603 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8604 {
8605 ent2->is_indirect = TRUE;
8606 ent2->got.ent = ent;
8607 }
8608}
8609
65f38f15
AM
8610/* Allocate space in .plt, .got and associated reloc sections for
8611 dynamic relocs. */
5bd4f169 8612
b34976b6 8613static bfd_boolean
4ce794b7 8614allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 8615{
65f38f15
AM
8616 struct bfd_link_info *info;
8617 struct ppc_link_hash_table *htab;
5bd4f169 8618 asection *s;
65f38f15
AM
8619 struct ppc_link_hash_entry *eh;
8620 struct ppc_dyn_relocs *p;
0b8bcf0d 8621 struct got_entry **pgent, *gent;
5bd4f169 8622
e92d460e 8623 if (h->root.type == bfd_link_hash_indirect)
b34976b6 8624 return TRUE;
5bd4f169 8625
e92d460e
AM
8626 if (h->root.type == bfd_link_hash_warning)
8627 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8628
65f38f15
AM
8629 info = (struct bfd_link_info *) inf;
8630 htab = ppc_hash_table (info);
4dfe6ac6
NC
8631 if (htab == NULL)
8632 return FALSE;
5bd4f169 8633
e054468f
AM
8634 if ((htab->elf.dynamic_sections_created
8635 && h->dynindx != -1
8636 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8637 || h->type == STT_GNU_IFUNC)
5bd4f169 8638 {
411e1bfb
AM
8639 struct plt_entry *pent;
8640 bfd_boolean doneone = FALSE;
8641 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8642 if (pent->plt.refcount > 0)
8643 {
25f23106
AM
8644 if (!htab->elf.dynamic_sections_created
8645 || h->dynindx == -1)
e054468f
AM
8646 {
8647 s = htab->iplt;
8648 pent->plt.offset = s->size;
8649 s->size += PLT_ENTRY_SIZE;
8650 s = htab->reliplt;
8651 }
8652 else
8653 {
8654 /* If this is the first .plt entry, make room for the special
8655 first entry. */
8656 s = htab->plt;
8657 if (s->size == 0)
8658 s->size += PLT_INITIAL_ENTRY_SIZE;
8659
8660 pent->plt.offset = s->size;
8661
8662 /* Make room for this entry. */
8663 s->size += PLT_ENTRY_SIZE;
8664
8665 /* Make room for the .glink code. */
8666 s = htab->glink;
8667 if (s->size == 0)
8668 s->size += GLINK_CALL_STUB_SIZE;
8669 /* We need bigger stubs past index 32767. */
8670 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8671 s->size += 4;
8672 s->size += 2*4;
8673
8674 /* We also need to make an entry in the .rela.plt section. */
8675 s = htab->relplt;
8676 }
eea6121a 8677 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
8678 doneone = TRUE;
8679 }
8680 else
8681 pent->plt.offset = (bfd_vma) -1;
8682 if (!doneone)
65f38f15 8683 {
411e1bfb 8684 h->plt.plist = NULL;
f5385ebf 8685 h->needs_plt = 0;
65f38f15
AM
8686 }
8687 }
8688 else
8689 {
411e1bfb 8690 h->plt.plist = NULL;
f5385ebf 8691 h->needs_plt = 0;
65f38f15
AM
8692 }
8693
951fd09b
AM
8694 eh = (struct ppc_link_hash_entry *) h;
8695 /* Run through the TLS GD got entries first if we're changing them
8696 to TPREL. */
e7b938ca 8697 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM
8698 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8699 if (gent->got.refcount > 0
8700 && (gent->tls_type & TLS_GD) != 0)
8701 {
8702 /* This was a GD entry that has been converted to TPREL. If
8703 there happens to be a TPREL entry we can use that one. */
8704 struct got_entry *ent;
8705 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8706 if (ent->got.refcount > 0
8707 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM
8708 && ent->addend == gent->addend
8709 && ent->owner == gent->owner)
951fd09b
AM
8710 {
8711 gent->got.refcount = 0;
8712 break;
8713 }
8714
8715 /* If not, then we'll be using our own TPREL entry. */
8716 if (gent->got.refcount != 0)
8717 gent->tls_type = TLS_TLS | TLS_TPREL;
8718 }
8719
7865406b
AM
8720 /* Remove any list entry that won't generate a word in the GOT before
8721 we call merge_got_entries. Otherwise we risk merging to empty
8722 entries. */
0b8bcf0d
AM
8723 pgent = &h->got.glist;
8724 while ((gent = *pgent) != NULL)
411e1bfb 8725 if (gent->got.refcount > 0)
7865406b
AM
8726 {
8727 if ((gent->tls_type & TLS_LD) != 0
8728 && !h->def_dynamic)
8729 {
8730 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8731 *pgent = gent->next;
8732 }
8733 else
8734 pgent = &gent->next;
8735 }
8736 else
8737 *pgent = gent->next;
8738
8739 if (!htab->do_multi_toc)
8740 merge_got_entries (&h->got.glist);
8741
8742 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8743 if (!gent->is_indirect)
411e1bfb
AM
8744 {
8745 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM
8746 Undefined weak syms won't yet be marked as dynamic,
8747 nor will all TLS symbols. */
411e1bfb 8748 if (h->dynindx == -1
b099ab9f 8749 && !h->forced_local
25f23106 8750 && h->type != STT_GNU_IFUNC
b099ab9f 8751 && htab->elf.dynamic_sections_created)
411e1bfb 8752 {
c152c796 8753 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM
8754 return FALSE;
8755 }
65f38f15 8756
0c8d6e5c 8757 if (!is_ppc64_elf (gent->owner))
927be08e 8758 abort ();
0ffa91dd 8759
927be08e 8760 allocate_got (h, info, gent);
411e1bfb 8761 }
65f38f15 8762
b099ab9f 8763 if (eh->dyn_relocs == NULL
25f23106
AM
8764 || (!htab->elf.dynamic_sections_created
8765 && h->type != STT_GNU_IFUNC))
b34976b6 8766 return TRUE;
65f38f15
AM
8767
8768 /* In the shared -Bsymbolic case, discard space allocated for
8769 dynamic pc-relative relocs against symbols which turn out to be
8770 defined in regular objects. For the normal shared case, discard
8771 space for relocs that have become local due to symbol visibility
8772 changes. */
8773
8774 if (info->shared)
8775 {
9c7a29a3 8776 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 8777 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM
8778 generated via assembly. We want calls to protected symbols to
8779 resolve directly to the function rather than going via the plt.
8780 If people want function pointer comparisons to work as expected
8781 then they should avoid writing weird assembly. */
09695f56 8782 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM
8783 {
8784 struct ppc_dyn_relocs **pp;
8785
8786 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 8787 {
65f38f15
AM
8788 p->count -= p->pc_count;
8789 p->pc_count = 0;
8790 if (p->count == 0)
8791 *pp = p->next;
8792 else
8793 pp = &p->next;
5bd4f169 8794 }
65f38f15 8795 }
4e795f50
AM
8796
8797 /* Also discard relocs on undefined weak syms with non-default
8798 visibility. */
cab87ef9
AM
8799 if (eh->dyn_relocs != NULL
8800 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM
8801 {
8802 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8803 eh->dyn_relocs = NULL;
8804
8805 /* Make sure this symbol is output as a dynamic symbol.
8806 Undefined weak syms won't yet be marked as dynamic. */
8807 else if (h->dynindx == -1
8808 && !h->forced_local)
8809 {
8810 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8811 return FALSE;
8812 }
8813 }
65f38f15 8814 }
25f23106
AM
8815 else if (h->type == STT_GNU_IFUNC)
8816 {
8817 if (!h->non_got_ref)
8818 eh->dyn_relocs = NULL;
8819 }
f4656909 8820 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM
8821 {
8822 /* For the non-shared case, discard space for relocs against
8823 symbols which turn out to need copy relocs or are not
8824 dynamic. */
8825
f5385ebf 8826 if (!h->non_got_ref
f5385ebf 8827 && !h->def_regular)
65f38f15
AM
8828 {
8829 /* Make sure this symbol is output as a dynamic symbol.
8830 Undefined weak syms won't yet be marked as dynamic. */
8831 if (h->dynindx == -1
f5385ebf 8832 && !h->forced_local)
65f38f15 8833 {
c152c796 8834 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 8835 return FALSE;
65f38f15
AM
8836 }
8837
8838 /* If that succeeded, we know we'll be keeping all the
8839 relocs. */
8840 if (h->dynindx != -1)
8841 goto keep;
8842 }
8843
8844 eh->dyn_relocs = NULL;
8845
ec338859 8846 keep: ;
65f38f15
AM
8847 }
8848
8849 /* Finally, allocate space. */
8850 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8851 {
8852 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM
8853 if (!htab->elf.dynamic_sections_created)
8854 sreloc = htab->reliplt;
eea6121a 8855 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM
8856 }
8857
b34976b6 8858 return TRUE;
65f38f15
AM
8859}
8860
8861/* Find any dynamic relocs that apply to read-only sections. */
8862
b34976b6 8863static bfd_boolean
4ce794b7 8864readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM
8865{
8866 struct ppc_link_hash_entry *eh;
8867 struct ppc_dyn_relocs *p;
8868
e92d460e
AM
8869 if (h->root.type == bfd_link_hash_warning)
8870 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8871
65f38f15
AM
8872 eh = (struct ppc_link_hash_entry *) h;
8873 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8874 {
8875 asection *s = p->sec->output_section;
8876
8877 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8878 {
4ce794b7 8879 struct bfd_link_info *info = inf;
65f38f15
AM
8880
8881 info->flags |= DF_TEXTREL;
8882
8883 /* Not an error, just cut short the traversal. */
b34976b6 8884 return FALSE;
65f38f15
AM
8885 }
8886 }
b34976b6 8887 return TRUE;
65f38f15
AM
8888}
8889
8890/* Set the sizes of the dynamic sections. */
8891
b34976b6 8892static bfd_boolean
4ce794b7
AM
8893ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8894 struct bfd_link_info *info)
65f38f15
AM
8895{
8896 struct ppc_link_hash_table *htab;
8897 bfd *dynobj;
8898 asection *s;
b34976b6 8899 bfd_boolean relocs;
65f38f15 8900 bfd *ibfd;
7865406b 8901 struct got_entry *first_tlsld;
65f38f15
AM
8902
8903 htab = ppc_hash_table (info);
4dfe6ac6
NC
8904 if (htab == NULL)
8905 return FALSE;
8906
65f38f15
AM
8907 dynobj = htab->elf.dynobj;
8908 if (dynobj == NULL)
8909 abort ();
8910
8911 if (htab->elf.dynamic_sections_created)
8912 {
8913 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 8914 if (info->executable)
65f38f15
AM
8915 {
8916 s = bfd_get_section_by_name (dynobj, ".interp");
8917 if (s == NULL)
8918 abort ();
eea6121a 8919 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM
8920 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8921 }
8922 }
8923
8924 /* Set up .got offsets for local syms, and space for local dynamic
8925 relocs. */
8926 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8927 {
411e1bfb
AM
8928 struct got_entry **lgot_ents;
8929 struct got_entry **end_lgot_ents;
e054468f
AM
8930 struct plt_entry **local_plt;
8931 struct plt_entry **end_local_plt;
f961d9dd 8932 unsigned char *lgot_masks;
65f38f15
AM
8933 bfd_size_type locsymcount;
8934 Elf_Internal_Shdr *symtab_hdr;
8935 asection *srel;
8936
0c8d6e5c 8937 if (!is_ppc64_elf (ibfd))
65f38f15
AM
8938 continue;
8939
8940 for (s = ibfd->sections; s != NULL; s = s->next)
8941 {
ec338859 8942 struct ppc_dyn_relocs *p;
65f38f15 8943
6edfbbad 8944 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 8945 {
ec338859
AM
8946 if (!bfd_is_abs_section (p->sec)
8947 && bfd_is_abs_section (p->sec->output_section))
8948 {
8949 /* Input section has been discarded, either because
8950 it is a copy of a linkonce section or due to
8951 linker script /DISCARD/, so we'll be discarding
8952 the relocs too. */
8953 }
248866a8 8954 else if (p->count != 0)
ec338859
AM
8955 {
8956 srel = elf_section_data (p->sec)->sreloc;
25f23106
AM
8957 if (!htab->elf.dynamic_sections_created)
8958 srel = htab->reliplt;
eea6121a 8959 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
8960 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8961 info->flags |= DF_TEXTREL;
ec338859 8962 }
65f38f15
AM
8963 }
8964 }
8965
411e1bfb
AM
8966 lgot_ents = elf_local_got_ents (ibfd);
8967 if (!lgot_ents)
65f38f15
AM
8968 continue;
8969
0ffa91dd 8970 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 8971 locsymcount = symtab_hdr->sh_info;
411e1bfb 8972 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM
8973 local_plt = (struct plt_entry **) end_lgot_ents;
8974 end_local_plt = local_plt + locsymcount;
f961d9dd 8975 lgot_masks = (unsigned char *) end_local_plt;
e717da7e
AM
8976 s = ppc64_elf_tdata (ibfd)->got;
8977 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 8978 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 8979 {
0b8bcf0d 8980 struct got_entry **pent, *ent;
411e1bfb 8981
0b8bcf0d
AM
8982 pent = lgot_ents;
8983 while ((ent = *pent) != NULL)
411e1bfb
AM
8984 if (ent->got.refcount > 0)
8985 {
e7b938ca 8986 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 8987 {
927be08e 8988 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 8989 *pent = ent->next;
411e1bfb
AM
8990 }
8991 else
8992 {
25f23106 8993 unsigned int num = 1;
eea6121a 8994 ent->got.offset = s->size;
e7b938ca 8995 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
25f23106
AM
8996 num = 2;
8997 s->size += num * 8;
8998 if (info->shared)
8999 srel->size += num * sizeof (Elf64_External_Rela);
9000 else if ((*lgot_masks & PLT_IFUNC) != 0)
927be08e
AM
9001 {
9002 htab->reliplt->size
9003 += num * sizeof (Elf64_External_Rela);
9004 htab->got_reli_size
9005 += num * sizeof (Elf64_External_Rela);
9006 }
0b8bcf0d 9007 pent = &ent->next;
411e1bfb
AM
9008 }
9009 }
9010 else
0b8bcf0d 9011 *pent = ent->next;
65f38f15 9012 }
e054468f
AM
9013
9014 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9015 for (; local_plt < end_local_plt; ++local_plt)
9016 {
9017 struct plt_entry *ent;
9018
9019 for (ent = *local_plt; ent != NULL; ent = ent->next)
9020 if (ent->plt.refcount > 0)
9021 {
91d6fa6a 9022 s = htab->iplt;
e054468f
AM
9023 ent->plt.offset = s->size;
9024 s->size += PLT_ENTRY_SIZE;
9025
25f23106 9026 htab->reliplt->size += sizeof (Elf64_External_Rela);
e054468f
AM
9027 }
9028 else
9029 ent->plt.offset = (bfd_vma) -1;
9030 }
65f38f15
AM
9031 }
9032
9033 /* Allocate global sym .plt and .got entries, and space for global
9034 sym dynamic relocs. */
4ce794b7 9035 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 9036
7865406b 9037 first_tlsld = NULL;
102890f0
AM
9038 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9039 {
7865406b
AM
9040 struct got_entry *ent;
9041
0c8d6e5c 9042 if (!is_ppc64_elf (ibfd))
102890f0
AM
9043 continue;
9044
7865406b
AM
9045 ent = ppc64_tlsld_got (ibfd);
9046 if (ent->got.refcount > 0)
102890f0 9047 {
7865406b 9048 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9049 {
7865406b
AM
9050 ent->is_indirect = TRUE;
9051 ent->got.ent = first_tlsld;
9052 }
9053 else
9054 {
9055 if (first_tlsld == NULL)
9056 first_tlsld = ent;
9057 s = ppc64_elf_tdata (ibfd)->got;
9058 ent->got.offset = s->size;
9059 ent->owner = ibfd;
9060 s->size += 16;
9061 if (info->shared)
9062 {
9063 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9064 srel->size += sizeof (Elf64_External_Rela);
9065 }
102890f0
AM
9066 }
9067 }
9068 else
7865406b 9069 ent->got.offset = (bfd_vma) -1;
102890f0
AM
9070 }
9071
65f38f15
AM
9072 /* We now have determined the sizes of the various dynamic sections.
9073 Allocate memory for them. */
b34976b6 9074 relocs = FALSE;
65f38f15
AM
9075 for (s = dynobj->sections; s != NULL; s = s->next)
9076 {
9077 if ((s->flags & SEC_LINKER_CREATED) == 0)
9078 continue;
9079
4ce794b7 9080 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM
9081 /* These haven't been allocated yet; don't strip. */
9082 continue;
e717da7e
AM
9083 else if (s == htab->got
9084 || s == htab->plt
e054468f 9085 || s == htab->iplt
c456f082
AM
9086 || s == htab->glink
9087 || s == htab->dynbss)
65f38f15
AM
9088 {
9089 /* Strip this section if we don't need it; see the
9090 comment below. */
5bd4f169 9091 }
70cc837d 9092 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9093 {
c456f082 9094 if (s->size != 0)
5bd4f169 9095 {
4ce794b7 9096 if (s != htab->relplt)
b34976b6 9097 relocs = TRUE;
5bd4f169
AM
9098
9099 /* We use the reloc_count field as a counter if we need
9100 to copy relocs into the output file. */
9101 s->reloc_count = 0;
9102 }
9103 }
65f38f15 9104 else
5bd4f169
AM
9105 {
9106 /* It's not one of our sections, so don't allocate space. */
9107 continue;
9108 }
9109
eea6121a 9110 if (s->size == 0)
5bd4f169 9111 {
c456f082
AM
9112 /* If we don't need this section, strip it from the
9113 output file. This is mostly to handle .rela.bss and
9114 .rela.plt. We must create both sections in
9115 create_dynamic_sections, because they must be created
9116 before the linker maps input sections to output
9117 sections. The linker does that before
9118 adjust_dynamic_symbol is called, and it is that
9119 function which decides whether anything needs to go
9120 into these sections. */
8423293d 9121 s->flags |= SEC_EXCLUDE;
5bd4f169
AM
9122 continue;
9123 }
9124
c456f082 9125 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM
9126 continue;
9127
65f38f15
AM
9128 /* Allocate memory for the section contents. We use bfd_zalloc
9129 here in case unused entries are not reclaimed before the
9130 section's contents are written out. This should not happen,
411e1bfb
AM
9131 but this way if it does we get a R_PPC64_NONE reloc in .rela
9132 sections instead of garbage.
9133 We also rely on the section contents being zero when writing
9134 the GOT. */
eea6121a 9135 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9136 if (s->contents == NULL)
b34976b6 9137 return FALSE;
5bd4f169
AM
9138 }
9139
e717da7e
AM
9140 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9141 {
0c8d6e5c 9142 if (!is_ppc64_elf (ibfd))
7b53ace3
AM
9143 continue;
9144
e717da7e
AM
9145 s = ppc64_elf_tdata (ibfd)->got;
9146 if (s != NULL && s != htab->got)
9147 {
eea6121a 9148 if (s->size == 0)
8423293d 9149 s->flags |= SEC_EXCLUDE;
e717da7e
AM
9150 else
9151 {
eea6121a 9152 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
9153 if (s->contents == NULL)
9154 return FALSE;
9155 }
9156 }
9157 s = ppc64_elf_tdata (ibfd)->relgot;
9158 if (s != NULL)
9159 {
eea6121a 9160 if (s->size == 0)
8423293d 9161 s->flags |= SEC_EXCLUDE;
e717da7e
AM
9162 else
9163 {
eea6121a 9164 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
9165 if (s->contents == NULL)
9166 return FALSE;
9167 relocs = TRUE;
9168 s->reloc_count = 0;
9169 }
9170 }
9171 }
9172
e86ce104 9173 if (htab->elf.dynamic_sections_created)
5bd4f169
AM
9174 {
9175 /* Add some entries to the .dynamic section. We fill in the
9176 values later, in ppc64_elf_finish_dynamic_sections, but we
9177 must add the entries now so that we get the correct size for
9178 the .dynamic section. The DT_DEBUG entry is filled in by the
9179 dynamic linker and used by the debugger. */
dc810e39 9180#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9181 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9182
36af4a4e 9183 if (info->executable)
5bd4f169 9184 {
dc810e39 9185 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9186 return FALSE;
5bd4f169
AM
9187 }
9188
eea6121a 9189 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 9190 {
dc810e39
AM
9191 if (!add_dynamic_entry (DT_PLTGOT, 0)
9192 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9193 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM
9194 || !add_dynamic_entry (DT_JMPREL, 0)
9195 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 9196 return FALSE;
5bd4f169
AM
9197 }
9198
19397422
AM
9199 if (NO_OPD_RELOCS)
9200 {
9201 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9202 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 9203 return FALSE;
19397422
AM
9204 }
9205
a7f2871e
AM
9206 if (!htab->no_tls_get_addr_opt
9207 && htab->tls_get_addr_fd != NULL
9208 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9209 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9210 return FALSE;
9211
5bd4f169
AM
9212 if (relocs)
9213 {
dc810e39
AM
9214 if (!add_dynamic_entry (DT_RELA, 0)
9215 || !add_dynamic_entry (DT_RELASZ, 0)
9216 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 9217 return FALSE;
5bd4f169 9218
65f38f15
AM
9219 /* If any dynamic relocs apply to a read-only section,
9220 then we need a DT_TEXTREL entry. */
248866a8 9221 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 9222 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 9223
65f38f15 9224 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 9225 {
65f38f15 9226 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 9227 return FALSE;
5bd4f169 9228 }
5bd4f169 9229 }
5bd4f169 9230 }
65f38f15 9231#undef add_dynamic_entry
5bd4f169 9232
b34976b6 9233 return TRUE;
5bd4f169
AM
9234}
9235
721956f4 9236/* Determine the type of stub needed, if any, for a call. */
5bd4f169 9237
4ce794b7
AM
9238static inline enum ppc_stub_type
9239ppc_type_of_stub (asection *input_sec,
9240 const Elf_Internal_Rela *rel,
9241 struct ppc_link_hash_entry **hash,
e054468f 9242 struct plt_entry **plt_ent,
4ce794b7 9243 bfd_vma destination)
5bd4f169 9244{
721956f4
AM
9245 struct ppc_link_hash_entry *h = *hash;
9246 bfd_vma location;
9247 bfd_vma branch_offset;
9248 bfd_vma max_branch_offset;
4ce794b7 9249 enum elf_ppc64_reloc_type r_type;
5bd4f169 9250
721956f4
AM
9251 if (h != NULL)
9252 {
e054468f 9253 struct plt_entry *ent;
7fe2b9a6 9254 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM
9255 if (h->oh != NULL
9256 && h->oh->is_func_descriptor)
7b8f6675
AM
9257 {
9258 fdh = ppc_follow_link (h->oh);
9259 *hash = fdh;
9260 }
8387904d 9261
e054468f
AM
9262 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9263 if (ent->addend == rel->r_addend
9264 && ent->plt.offset != (bfd_vma) -1)
9265 {
e054468f
AM
9266 *plt_ent = ent;
9267 return ppc_stub_plt_call;
9268 }
5bd4f169 9269
7fe2b9a6
AM
9270 /* Here, we know we don't have a plt entry. If we don't have a
9271 either a defined function descriptor or a defined entry symbol
9272 in a regular object file, then it is pointless trying to make
9273 any other type of stub. */
854b41e7
AM
9274 if (!is_static_defined (&fdh->elf)
9275 && !is_static_defined (&h->elf))
721956f4 9276 return ppc_stub_none;
5d1634d7 9277 }
e054468f
AM
9278 else if (elf_local_got_ents (input_sec->owner) != NULL)
9279 {
9280 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9281 struct plt_entry **local_plt = (struct plt_entry **)
9282 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9283 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9284
9285 if (local_plt[r_symndx] != NULL)
9286 {
9287 struct plt_entry *ent;
9288
9289 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9290 if (ent->addend == rel->r_addend
9291 && ent->plt.offset != (bfd_vma) -1)
9292 {
9293 *plt_ent = ent;
9294 return ppc_stub_plt_call;
9295 }
9296 }
9297 }
5d1634d7 9298
721956f4
AM
9299 /* Determine where the call point is. */
9300 location = (input_sec->output_offset
9301 + input_sec->output_section->vma
9302 + rel->r_offset);
5d1634d7 9303
721956f4
AM
9304 branch_offset = destination - location;
9305 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 9306
721956f4
AM
9307 /* Determine if a long branch stub is needed. */
9308 max_branch_offset = 1 << 25;
4ce794b7 9309 if (r_type != R_PPC64_REL24)
721956f4 9310 max_branch_offset = 1 << 15;
5d1634d7 9311
721956f4
AM
9312 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9313 /* We need a stub. Figure out whether a long_branch or plt_branch
9314 is needed later. */
9315 return ppc_stub_long_branch;
5d1634d7 9316
721956f4 9317 return ppc_stub_none;
5d1634d7
AM
9318}
9319
9320/* Build a .plt call stub. */
9321
4ce794b7 9322static inline bfd_byte *
176a0d42 9323build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
5d1634d7
AM
9324{
9325#define PPC_LO(v) ((v) & 0xffff)
9326#define PPC_HI(v) (((v) >> 16) & 0xffff)
9327#define PPC_HA(v) PPC_HI ((v) + 0x8000)
9328
ac2df442
AM
9329 if (PPC_HA (offset) != 0)
9330 {
176a0d42
AM
9331 if (r != NULL)
9332 {
9333 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9334 r[1].r_offset = r[0].r_offset + 8;
9335 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9336 r[1].r_addend = r[0].r_addend;
9337 if (PPC_HA (offset + 16) != PPC_HA (offset))
9338 {
9339 r[2].r_offset = r[1].r_offset + 4;
9340 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9341 r[2].r_addend = r[0].r_addend;
9342 }
9343 else
9344 {
9345 r[2].r_offset = r[1].r_offset + 8;
9346 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9347 r[2].r_addend = r[0].r_addend + 8;
9348 r[3].r_offset = r[2].r_offset + 4;
9349 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9350 r[3].r_addend = r[0].r_addend + 16;
9351 }
9352 }
ac2df442
AM
9353 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9354 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9355 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9356 if (PPC_HA (offset + 16) != PPC_HA (offset))
9357 {
9358 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9359 offset = 0;
9360 }
9361 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9362 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9363 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9364 bfd_put_32 (obfd, BCTR, p), p += 4;
9365 }
9366 else
9367 {
176a0d42
AM
9368 if (r != NULL)
9369 {
9370 r[0].r_offset += 4;
9371 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9372 if (PPC_HA (offset + 16) != PPC_HA (offset))
9373 {
9374 r[1].r_offset = r[0].r_offset + 4;
9375 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9376 r[1].r_addend = r[0].r_addend;
9377 }
9378 else
9379 {
9380 r[1].r_offset = r[0].r_offset + 8;
9381 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9382 r[1].r_addend = r[0].r_addend + 16;
9383 r[2].r_offset = r[1].r_offset + 4;
9384 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9385 r[2].r_addend = r[0].r_addend + 8;
9386 }
9387 }
ac2df442
AM
9388 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9389 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9390 if (PPC_HA (offset + 16) != PPC_HA (offset))
9391 {
9392 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9393 offset = 0;
9394 }
9395 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9396 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9397 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9398 bfd_put_32 (obfd, BCTR, p), p += 4;
9399 }
5d1634d7
AM
9400 return p;
9401}
9402
a7f2871e
AM
9403/* Build a special .plt call stub for __tls_get_addr. */
9404
9405#define LD_R11_0R3 0xe9630000
9406#define LD_R12_0R3 0xe9830000
9407#define MR_R0_R3 0x7c601b78
9408#define CMPDI_R11_0 0x2c2b0000
9409#define ADD_R3_R12_R13 0x7c6c6a14
9410#define BEQLR 0x4d820020
9411#define MR_R3_R0 0x7c030378
9412#define MFLR_R11 0x7d6802a6
9413#define STD_R11_0R1 0xf9610000
9414#define BCTRL 0x4e800421
9415#define LD_R11_0R1 0xe9610000
9416#define LD_R2_0R1 0xe8410000
9417#define MTLR_R11 0x7d6803a6
9418
9419static inline bfd_byte *
9420build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9421 Elf_Internal_Rela *r)
9422{
9423 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9424 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9425 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9426 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9427 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9428 bfd_put_32 (obfd, BEQLR, p), p += 4;
9429 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9430 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9431 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9432
9433 if (r != NULL)
9434 r[0].r_offset += 9 * 4;
9435 p = build_plt_stub (obfd, p, offset, r);
9436 bfd_put_32 (obfd, BCTRL, p - 4);
9437
9438 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9439 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9440 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9441 bfd_put_32 (obfd, BLR, p), p += 4;
9442
9443 return p;
9444}
9445
176a0d42
AM
9446static Elf_Internal_Rela *
9447get_relocs (asection *sec, int count)
9448{
9449 Elf_Internal_Rela *relocs;
9450 struct bfd_elf_section_data *elfsec_data;
9451
9452 elfsec_data = elf_section_data (sec);
9453 relocs = elfsec_data->relocs;
9454 if (relocs == NULL)
9455 {
9456 bfd_size_type relsize;
9457 relsize = sec->reloc_count * sizeof (*relocs);
9458 relocs = bfd_alloc (sec->owner, relsize);
9459 if (relocs == NULL)
9460 return NULL;
9461 elfsec_data->relocs = relocs;
d4730f92
BS
9462 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9463 sizeof (Elf_Internal_Shdr));
9464 if (elfsec_data->rela.hdr == NULL)
9465 return NULL;
9466 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9467 * sizeof (Elf64_External_Rela));
9468 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM
9469 sec->reloc_count = 0;
9470 }
9471 relocs += sec->reloc_count;
9472 sec->reloc_count += count;
9473 return relocs;
9474}
9475
aa374f67 9476static bfd_vma
25f53a85 9477get_r2off (struct bfd_link_info *info,
aa374f67
AM
9478 struct ppc_stub_hash_entry *stub_entry)
9479{
25f53a85 9480 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM
9481 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9482
9483 if (r2off == 0)
9484 {
9485 /* Support linking -R objects. Get the toc pointer from the
9486 opd entry. */
9487 char buf[8];
9488 asection *opd = stub_entry->h->elf.root.u.def.section;
9489 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9490
9491 if (strcmp (opd->name, ".opd") != 0
9492 || opd->reloc_count != 0)
9493 {
25f53a85
AM
9494 info->callbacks->einfo (_("cannot find opd entry toc for %s\n"),
9495 stub_entry->h->elf.root.root.string);
aa374f67
AM
9496 bfd_set_error (bfd_error_bad_value);
9497 return 0;
9498 }
9499 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9500 return 0;
9501 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 9502 r2off -= elf_gp (info->output_bfd);
aa374f67
AM
9503 }
9504 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9505 return r2off;
9506}
9507
b34976b6 9508static bfd_boolean
4ce794b7 9509ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 9510{
721956f4
AM
9511 struct ppc_stub_hash_entry *stub_entry;
9512 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM
9513 struct bfd_link_info *info;
9514 struct ppc_link_hash_table *htab;
721956f4
AM
9515 bfd_byte *loc;
9516 bfd_byte *p;
ee75fd95 9517 bfd_vma dest, off;
721956f4 9518 int size;
176a0d42 9519 Elf_Internal_Rela *r;
e054468f 9520 asection *plt;
5d1634d7 9521
721956f4
AM
9522 /* Massage our args to the form they really have. */
9523 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 9524 info = in_arg;
5d1634d7 9525
5d1634d7 9526 htab = ppc_hash_table (info);
4dfe6ac6
NC
9527 if (htab == NULL)
9528 return FALSE;
5d1634d7 9529
721956f4 9530 /* Make a note of the offset within the stubs for this entry. */
eea6121a 9531 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 9532 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 9533
4ce794b7 9534 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 9535 switch (stub_entry->stub_type)
5d1634d7 9536 {
721956f4 9537 case ppc_stub_long_branch:
ad8e1ba5 9538 case ppc_stub_long_branch_r2off:
721956f4 9539 /* Branches are relative. This is where we are going to. */
ee75fd95
AM
9540 off = dest = (stub_entry->target_value
9541 + stub_entry->target_section->output_offset
9542 + stub_entry->target_section->output_section->vma);
5d1634d7 9543
721956f4
AM
9544 /* And this is where we are coming from. */
9545 off -= (stub_entry->stub_offset
97b639ba
AM
9546 + stub_entry->stub_sec->output_offset
9547 + stub_entry->stub_sec->output_section->vma);
e86ce104 9548
ac2df442
AM
9549 size = 4;
9550 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 9551 {
25f53a85 9552 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 9553
aa374f67
AM
9554 if (r2off == 0)
9555 {
9556 htab->stub_error = TRUE;
9557 return FALSE;
9558 }
97b639ba 9559 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 9560 loc += 4;
ac2df442
AM
9561 size = 12;
9562 if (PPC_HA (r2off) != 0)
9563 {
9564 size = 16;
9565 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9566 loc += 4;
9567 }
97b639ba 9568 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 9569 loc += 4;
ac2df442 9570 off -= size - 4;
ad8e1ba5 9571 }
97b639ba 9572 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 9573
5c3dead3
AM
9574 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9575 {
25f53a85
AM
9576 info->callbacks->einfo (_("long branch stub `%s' offset overflow\n"),
9577 stub_entry->root.string);
5c3dead3
AM
9578 htab->stub_error = TRUE;
9579 return FALSE;
9580 }
ee75fd95
AM
9581
9582 if (info->emitrelocations)
9583 {
176a0d42
AM
9584 r = get_relocs (stub_entry->stub_sec, 1);
9585 if (r == NULL)
9586 return FALSE;
ee75fd95
AM
9587 r->r_offset = loc - stub_entry->stub_sec->contents;
9588 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9589 r->r_addend = dest;
9590 if (stub_entry->h != NULL)
9591 {
9592 struct elf_link_hash_entry **hashes;
9593 unsigned long symndx;
9594 struct ppc_link_hash_entry *h;
9595
9596 hashes = elf_sym_hashes (htab->stub_bfd);
9597 if (hashes == NULL)
9598 {
9599 bfd_size_type hsize;
9600
9601 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9602 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9603 if (hashes == NULL)
9604 return FALSE;
9605 elf_sym_hashes (htab->stub_bfd) = hashes;
9606 htab->stub_globals = 1;
9607 }
9608 symndx = htab->stub_globals++;
9609 h = stub_entry->h;
9610 hashes[symndx] = &h->elf;
9611 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9612 if (h->oh != NULL && h->oh->is_func)
b31867b6 9613 h = ppc_follow_link (h->oh);
ee75fd95
AM
9614 if (h->elf.root.u.def.section != stub_entry->target_section)
9615 /* H is an opd symbol. The addend must be zero. */
9616 r->r_addend = 0;
9617 else
9618 {
9619 off = (h->elf.root.u.def.value
9620 + h->elf.root.u.def.section->output_offset
9621 + h->elf.root.u.def.section->output_section->vma);
9622 r->r_addend -= off;
9623 }
9624 }
9625 }
721956f4 9626 break;
e86ce104 9627
721956f4 9628 case ppc_stub_plt_branch:
ad8e1ba5 9629 case ppc_stub_plt_branch_r2off:
721956f4
AM
9630 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9631 stub_entry->root.string + 9,
b34976b6 9632 FALSE, FALSE);
721956f4
AM
9633 if (br_entry == NULL)
9634 {
25f53a85
AM
9635 info->callbacks->einfo (_("can't find branch stub `%s'\n"),
9636 stub_entry->root.string);
b34976b6
AM
9637 htab->stub_error = TRUE;
9638 return FALSE;
721956f4
AM
9639 }
9640
176a0d42
AM
9641 dest = (stub_entry->target_value
9642 + stub_entry->target_section->output_offset
9643 + stub_entry->target_section->output_section->vma);
721956f4 9644
176a0d42 9645 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 9646 htab->brlt->contents + br_entry->offset);
721956f4 9647
f94498ff 9648 if (br_entry->iter == htab->stub_iteration)
721956f4 9649 {
f94498ff 9650 br_entry->iter = 0;
84f5d08e 9651
f94498ff 9652 if (htab->relbrlt != NULL)
84f5d08e 9653 {
f94498ff
AM
9654 /* Create a reloc for the branch lookup table entry. */
9655 Elf_Internal_Rela rela;
9656 bfd_byte *rl;
9657
9658 rela.r_offset = (br_entry->offset
9659 + htab->brlt->output_offset
9660 + htab->brlt->output_section->vma);
9661 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 9662 rela.r_addend = dest;
f94498ff
AM
9663
9664 rl = htab->relbrlt->contents;
9665 rl += (htab->relbrlt->reloc_count++
9666 * sizeof (Elf64_External_Rela));
9667 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9668 }
9669 else if (info->emitrelocations)
9670 {
176a0d42
AM
9671 r = get_relocs (htab->brlt, 1);
9672 if (r == NULL)
9673 return FALSE;
9674 /* brlt, being SEC_LINKER_CREATED does not go through the
9675 normal reloc processing. Symbols and offsets are not
9676 translated from input file to output file form, so
9677 set up the offset per the output file. */
f94498ff
AM
9678 r->r_offset = (br_entry->offset
9679 + htab->brlt->output_offset
9680 + htab->brlt->output_section->vma);
9681 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 9682 r->r_addend = dest;
84f5d08e 9683 }
84f5d08e 9684 }
721956f4 9685
176a0d42
AM
9686 dest = (br_entry->offset
9687 + htab->brlt->output_offset
9688 + htab->brlt->output_section->vma);
9689
9690 off = (dest
4ce794b7 9691 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 9692 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 9693
ad8e1ba5 9694 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 9695 {
25f53a85
AM
9696 info->callbacks->einfo
9697 (_("linkage table error against `%s'\n"),
721956f4 9698 stub_entry->root.string);
5d1634d7 9699 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
9700 htab->stub_error = TRUE;
9701 return FALSE;
5d1634d7 9702 }
41bd81ab 9703
176a0d42
AM
9704 if (info->emitrelocations)
9705 {
9706 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9707 if (r == NULL)
9708 return FALSE;
9709 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM
9710 if (bfd_big_endian (info->output_bfd))
9711 r[0].r_offset += 2;
176a0d42
AM
9712 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9713 r[0].r_offset += 4;
9714 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9715 r[0].r_addend = dest;
9716 if (PPC_HA (off) != 0)
9717 {
9718 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9719 r[1].r_offset = r[0].r_offset + 4;
9720 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9721 r[1].r_addend = r[0].r_addend;
9722 }
9723 }
9724
ad8e1ba5
AM
9725 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9726 {
176a0d42 9727 if (PPC_HA (off) != 0)
ac2df442
AM
9728 {
9729 size = 16;
176a0d42 9730 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 9731 loc += 4;
176a0d42 9732 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
9733 }
9734 else
9735 {
9736 size = 12;
176a0d42 9737 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 9738 }
ad8e1ba5
AM
9739 }
9740 else
9741 {
25f53a85 9742 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67
AM
9743
9744 if (r2off == 0)
9745 {
9746 htab->stub_error = TRUE;
9747 return FALSE;
9748 }
ad8e1ba5 9749
97b639ba 9750 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 9751 loc += 4;
ac2df442 9752 size = 20;
176a0d42 9753 if (PPC_HA (off) != 0)
ac2df442
AM
9754 {
9755 size += 4;
176a0d42 9756 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 9757 loc += 4;
176a0d42 9758 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
9759 loc += 4;
9760 }
9761 else
9762 {
176a0d42 9763 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM
9764 loc += 4;
9765 }
9766
9767 if (PPC_HA (r2off) != 0)
9768 {
9769 size += 4;
9770 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9771 loc += 4;
9772 }
97b639ba 9773 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
9774 }
9775 loc += 4;
97b639ba 9776 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 9777 loc += 4;
97b639ba 9778 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 9779 break;
5d1634d7 9780
721956f4 9781 case ppc_stub_plt_call:
e054468f 9782 if (stub_entry->h != NULL
b31867b6
AM
9783 && stub_entry->h->is_func_descriptor
9784 && stub_entry->h->oh != NULL)
c862ae31 9785 {
b31867b6
AM
9786 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9787
9788 /* If the old-ABI "dot-symbol" is undefined make it weak so
9789 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9790 FIXME: We used to define the symbol on one of the call
9791 stubs instead, which is why we test symbol section id
9792 against htab->top_id in various places. Likely all
9793 these checks could now disappear. */
9794 if (fh->elf.root.type == bfd_link_hash_undefined)
9795 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM
9796 /* Stop undo_symbol_twiddle changing it back to undefined. */
9797 fh->was_undefined = 0;
c862ae31
AM
9798 }
9799
721956f4 9800 /* Now build the stub. */
e054468f 9801 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 9802 if (dest >= (bfd_vma) -2)
721956f4
AM
9803 abort ();
9804
e054468f 9805 plt = htab->plt;
25f23106
AM
9806 if (!htab->elf.dynamic_sections_created
9807 || stub_entry->h == NULL
9808 || stub_entry->h->elf.dynindx == -1)
e054468f
AM
9809 plt = htab->iplt;
9810
9811 dest += plt->output_offset + plt->output_section->vma;
9812
9813 if (stub_entry->h == NULL
9814 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9815 {
9816 Elf_Internal_Rela rela;
9817 bfd_byte *rl;
9818
9819 rela.r_offset = dest;
25f23106 9820 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
e054468f
AM
9821 rela.r_addend = (stub_entry->target_value
9822 + stub_entry->target_section->output_offset
9823 + stub_entry->target_section->output_section->vma);
9824
25f23106
AM
9825 rl = (htab->reliplt->contents
9826 + (htab->reliplt->reloc_count++
9827 * sizeof (Elf64_External_Rela)));
9828 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM
9829 stub_entry->plt_ent->plt.offset |= 1;
9830 }
176a0d42
AM
9831
9832 off = (dest
e054468f 9833 - elf_gp (plt->output_section->owner)
176a0d42 9834 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 9835
ad8e1ba5 9836 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 9837 {
25f53a85
AM
9838 info->callbacks->einfo
9839 (_("linkage table error against `%s'\n"),
e054468f
AM
9840 stub_entry->h != NULL
9841 ? stub_entry->h->elf.root.root.string
9842 : "<local sym>");
721956f4 9843 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
9844 htab->stub_error = TRUE;
9845 return FALSE;
721956f4
AM
9846 }
9847
176a0d42
AM
9848 r = NULL;
9849 if (info->emitrelocations)
9850 {
9851 r = get_relocs (stub_entry->stub_sec,
9852 (2 + (PPC_HA (off) != 0)
9853 + (PPC_HA (off + 16) == PPC_HA (off))));
9854 if (r == NULL)
9855 return FALSE;
9856 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM
9857 if (bfd_big_endian (info->output_bfd))
9858 r[0].r_offset += 2;
176a0d42
AM
9859 r[0].r_addend = dest;
9860 }
a7f2871e
AM
9861 if (stub_entry->h != NULL
9862 && (stub_entry->h == htab->tls_get_addr_fd
9863 || stub_entry->h == htab->tls_get_addr)
9864 && !htab->no_tls_get_addr_opt)
9865 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9866 else
9867 p = build_plt_stub (htab->stub_bfd, loc, off, r);
721956f4
AM
9868 size = p - loc;
9869 break;
9870
9871 default:
9872 BFD_FAIL ();
b34976b6 9873 return FALSE;
721956f4
AM
9874 }
9875
eea6121a 9876 stub_entry->stub_sec->size += size;
97b639ba 9877
ee75fd95 9878 if (htab->emit_stub_syms)
97b639ba
AM
9879 {
9880 struct elf_link_hash_entry *h;
ee75fd95
AM
9881 size_t len1, len2;
9882 char *name;
9883 const char *const stub_str[] = { "long_branch",
9884 "long_branch_r2off",
9885 "plt_branch",
9886 "plt_branch_r2off",
9887 "plt_call" };
9888
9889 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9890 len2 = strlen (stub_entry->root.string);
9891 name = bfd_malloc (len1 + len2 + 2);
9892 if (name == NULL)
9893 return FALSE;
9894 memcpy (name, stub_entry->root.string, 9);
9895 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9896 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9897 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM
9898 if (h == NULL)
9899 return FALSE;
9900 if (h->root.type == bfd_link_hash_new)
9901 {
9902 h->root.type = bfd_link_hash_defined;
9903 h->root.u.def.section = stub_entry->stub_sec;
9904 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM
9905 h->ref_regular = 1;
9906 h->def_regular = 1;
9907 h->ref_regular_nonweak = 1;
9908 h->forced_local = 1;
9909 h->non_elf = 0;
97b639ba
AM
9910 }
9911 }
9912
b34976b6 9913 return TRUE;
721956f4
AM
9914}
9915
9916/* As above, but don't actually build the stub. Just bump offset so
9917 we know stub section sizes, and select plt_branch stubs where
9918 long_branch stubs won't do. */
9919
b34976b6 9920static bfd_boolean
4ce794b7 9921ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM
9922{
9923 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 9924 struct bfd_link_info *info;
721956f4
AM
9925 struct ppc_link_hash_table *htab;
9926 bfd_vma off;
9927 int size;
9928
9929 /* Massage our args to the form they really have. */
9930 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM
9931 info = in_arg;
9932
9933 htab = ppc_hash_table (info);
4dfe6ac6
NC
9934 if (htab == NULL)
9935 return FALSE;
721956f4
AM
9936
9937 if (stub_entry->stub_type == ppc_stub_plt_call)
9938 {
e054468f
AM
9939 asection *plt;
9940 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 9941 if (off >= (bfd_vma) -2)
411e1bfb 9942 abort ();
e054468f 9943 plt = htab->plt;
25f23106
AM
9944 if (!htab->elf.dynamic_sections_created
9945 || stub_entry->h == NULL
9946 || stub_entry->h->elf.dynindx == -1)
e054468f
AM
9947 plt = htab->iplt;
9948 off += (plt->output_offset
9949 + plt->output_section->vma
9950 - elf_gp (plt->output_section->owner)
ad8e1ba5 9951 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 9952
ad8e1ba5 9953 size = PLT_CALL_STUB_SIZE;
ac2df442
AM
9954 if (PPC_HA (off) == 0)
9955 size -= 4;
4ce794b7 9956 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4 9957 size += 4;
a7f2871e
AM
9958 if (stub_entry->h != NULL
9959 && (stub_entry->h == htab->tls_get_addr_fd
9960 || stub_entry->h == htab->tls_get_addr)
9961 && !htab->no_tls_get_addr_opt)
9962 size += 13 * 4;
176a0d42
AM
9963 if (info->emitrelocations)
9964 {
9965 stub_entry->stub_sec->reloc_count
9966 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9967 stub_entry->stub_sec->flags |= SEC_RELOC;
9968 }
721956f4
AM
9969 }
9970 else
9971 {
ad8e1ba5
AM
9972 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9973 variants. */
ac2df442
AM
9974 bfd_vma r2off = 0;
9975
721956f4
AM
9976 off = (stub_entry->target_value
9977 + stub_entry->target_section->output_offset
9978 + stub_entry->target_section->output_section->vma);
eea6121a 9979 off -= (stub_entry->stub_sec->size
721956f4
AM
9980 + stub_entry->stub_sec->output_offset
9981 + stub_entry->stub_sec->output_section->vma);
9982
ad8e1ba5
AM
9983 /* Reset the stub type from the plt variant in case we now
9984 can reach with a shorter stub. */
9985 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9986 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9987
9988 size = 4;
9989 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9990 {
25f53a85 9991 r2off = get_r2off (info, stub_entry);
aa374f67
AM
9992 if (r2off == 0)
9993 {
9994 htab->stub_error = TRUE;
9995 return FALSE;
9996 }
ac2df442
AM
9997 size = 12;
9998 if (PPC_HA (r2off) != 0)
9999 size = 16;
10000 off -= size - 4;
ad8e1ba5
AM
10001 }
10002
10003 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM
10004 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10005 {
10006 struct ppc_branch_hash_entry *br_entry;
10007
10008 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10009 stub_entry->root.string + 9,
b34976b6 10010 TRUE, FALSE);
721956f4
AM
10011 if (br_entry == NULL)
10012 {
25f53a85
AM
10013 info->callbacks->einfo (_("can't build branch stub `%s'\n"),
10014 stub_entry->root.string);
b34976b6
AM
10015 htab->stub_error = TRUE;
10016 return FALSE;
721956f4
AM
10017 }
10018
10019 if (br_entry->iter != htab->stub_iteration)
10020 {
10021 br_entry->iter = htab->stub_iteration;
eea6121a
AM
10022 br_entry->offset = htab->brlt->size;
10023 htab->brlt->size += 8;
63bc6f6c 10024
ee75fd95 10025 if (htab->relbrlt != NULL)
eea6121a 10026 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM
10027 else if (info->emitrelocations)
10028 {
10029 htab->brlt->reloc_count += 1;
10030 htab->brlt->flags |= SEC_RELOC;
10031 }
721956f4 10032 }
ad8e1ba5
AM
10033
10034 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM
10035 off = (br_entry->offset
10036 + htab->brlt->output_offset
10037 + htab->brlt->output_section->vma
10038 - elf_gp (htab->brlt->output_section->owner)
10039 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10040
176a0d42
AM
10041 if (info->emitrelocations)
10042 {
10043 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10044 stub_entry->stub_sec->flags |= SEC_RELOC;
10045 }
10046
ac2df442
AM
10047 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10048 {
10049 size = 12;
176a0d42 10050 if (PPC_HA (off) != 0)
ac2df442
AM
10051 size = 16;
10052 }
10053 else
10054 {
10055 size = 20;
176a0d42 10056 if (PPC_HA (off) != 0)
ac2df442
AM
10057 size += 4;
10058
10059 if (PPC_HA (r2off) != 0)
10060 size += 4;
10061 }
721956f4 10062 }
84f5d08e
AM
10063 else if (info->emitrelocations)
10064 {
10065 stub_entry->stub_sec->reloc_count += 1;
10066 stub_entry->stub_sec->flags |= SEC_RELOC;
10067 }
721956f4
AM
10068 }
10069
eea6121a 10070 stub_entry->stub_sec->size += size;
b34976b6 10071 return TRUE;
721956f4
AM
10072}
10073
10074/* Set up various things so that we can make a list of input sections
10075 for each output section included in the link. Returns -1 on error,
cedb70c5 10076 0 when no stubs will be needed, and 1 on success. */
721956f4
AM
10077
10078int
927be08e
AM
10079ppc64_elf_setup_section_lists
10080 (struct bfd_link_info *info,
10081 asection *(*add_stub_section) (const char *, asection *),
10082 void (*layout_sections_again) (void))
721956f4
AM
10083{
10084 bfd *input_bfd;
734b6cf9 10085 int top_id, top_index, id;
721956f4 10086 asection *section;
734b6cf9 10087 asection **input_list;
721956f4
AM
10088 bfd_size_type amt;
10089 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10090
4dfe6ac6
NC
10091 if (htab == NULL)
10092 return -1;
927be08e
AM
10093 /* Stash our params away. */
10094 htab->add_stub_section = add_stub_section;
10095 htab->layout_sections_again = layout_sections_again;
4c52953f 10096
4ce794b7 10097 if (htab->brlt == NULL)
721956f4
AM
10098 return 0;
10099
1e2f5b6e 10100 /* Find the top input section id. */
3d6f9012 10101 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM
10102 input_bfd != NULL;
10103 input_bfd = input_bfd->link_next)
10104 {
721956f4
AM
10105 for (section = input_bfd->sections;
10106 section != NULL;
10107 section = section->next)
10108 {
10109 if (top_id < section->id)
10110 top_id = section->id;
10111 }
10112 }
721956f4 10113
8f3bab57 10114 htab->top_id = top_id;
721956f4 10115 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 10116 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM
10117 if (htab->stub_group == NULL)
10118 return -1;
10119
3d6f9012
AM
10120 /* Set toc_off for com, und, abs and ind sections. */
10121 for (id = 0; id < 3; id++)
10122 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 10123
734b6cf9
AM
10124 /* We can't use output_bfd->section_count here to find the top output
10125 section index as some sections may have been removed, and
8423293d 10126 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 10127 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM
10128 section != NULL;
10129 section = section->next)
10130 {
10131 if (top_index < section->index)
10132 top_index = section->index;
10133 }
10134
10135 htab->top_index = top_index;
10136 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 10137 input_list = bfd_zmalloc (amt);
734b6cf9
AM
10138 htab->input_list = input_list;
10139 if (input_list == NULL)
10140 return -1;
10141
721956f4
AM
10142 return 1;
10143}
10144
927be08e
AM
10145/* Set up for first pass at multitoc partitioning. */
10146
10147void
10148ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10149{
10150 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10151
10152 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10153 htab->toc_curr = elf_gp (info->output_bfd);
10154 htab->toc_bfd = NULL;
10155 htab->toc_first_sec = NULL;
10156}
10157
e717da7e
AM
10158/* The linker repeatedly calls this function for each TOC input section
10159 and linker generated GOT section. Group input bfds such that the toc
927be08e 10160 within a group is less than 64k in size. */
ad8e1ba5 10161
927be08e 10162bfd_boolean
4ce794b7 10163ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM
10164{
10165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 10166 bfd_vma addr, off, limit;
ad8e1ba5 10167
4dfe6ac6
NC
10168 if (htab == NULL)
10169 return FALSE;
10170
927be08e 10171 if (!htab->second_toc_pass)
4c52953f 10172 {
927be08e 10173 /* Keep track of the first .toc or .got section for this input bfd. */
bf102f86
AM
10174 if (htab->toc_bfd != isec->owner)
10175 {
10176 htab->toc_bfd = isec->owner;
10177 htab->toc_first_sec = isec;
10178 }
927be08e 10179
bf102f86
AM
10180 addr = isec->output_offset + isec->output_section->vma;
10181 off = addr - htab->toc_curr;
d77c8a4b
AM
10182 limit = 0x80008000;
10183 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10184 limit = 0x10000;
10185 if (off + isec->size > limit)
bf102f86
AM
10186 {
10187 addr = (htab->toc_first_sec->output_offset
10188 + htab->toc_first_sec->output_section->vma);
10189 htab->toc_curr = addr;
10190 }
99877b66 10191
927be08e
AM
10192 /* toc_curr is the base address of this toc group. Set elf_gp
10193 for the input section to be the offset relative to the
10194 output toc base plus 0x8000. Making the input elf_gp an
10195 offset allows us to move the toc as a whole without
10196 recalculating input elf_gp. */
10197 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10198 off += TOC_BASE_OFF;
10199
10200 /* Die if someone uses a linker script that doesn't keep input
10201 file .toc and .got together. */
10202 if (elf_gp (isec->owner) != 0
10203 && elf_gp (isec->owner) != off)
10204 return FALSE;
10205
10206 elf_gp (isec->owner) = off;
10207 return TRUE;
4c52953f 10208 }
927be08e
AM
10209
10210 /* During the second pass toc_first_sec points to the start of
10211 a toc group, and toc_curr is used to track the old elf_gp.
10212 We use toc_bfd to ensure we only look at each bfd once. */
10213 if (htab->toc_bfd == isec->owner)
10214 return TRUE;
10215 htab->toc_bfd = isec->owner;
10216
10217 if (htab->toc_first_sec == NULL
10218 || htab->toc_curr != elf_gp (isec->owner))
10219 {
10220 htab->toc_curr = elf_gp (isec->owner);
10221 htab->toc_first_sec = isec;
10222 }
10223 addr = (htab->toc_first_sec->output_offset
10224 + htab->toc_first_sec->output_section->vma);
10225 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10226 elf_gp (isec->owner) = off;
10227
10228 return TRUE;
ad8e1ba5
AM
10229}
10230
927be08e
AM
10231/* Called via elf_link_hash_traverse to merge GOT entries for global
10232 symbol H. */
10233
10234static bfd_boolean
10235merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10236{
10237 if (h->root.type == bfd_link_hash_indirect)
10238 return TRUE;
10239
10240 if (h->root.type == bfd_link_hash_warning)
10241 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10242
10243 merge_got_entries (&h->got.glist);
10244
10245 return TRUE;
10246}
10247
10248/* Called via elf_link_hash_traverse to allocate GOT entries for global
10249 symbol H. */
10250
10251static bfd_boolean
10252reallocate_got (struct elf_link_hash_entry *h, void *inf)
10253{
10254 struct got_entry *gent;
10255
10256 if (h->root.type == bfd_link_hash_indirect)
10257 return TRUE;
10258
10259 if (h->root.type == bfd_link_hash_warning)
10260 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10261
10262 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10263 if (!gent->is_indirect)
10264 allocate_got (h, (struct bfd_link_info *) inf, gent);
10265 return TRUE;
10266}
10267
10268/* Called on the first multitoc pass after the last call to
10269 ppc64_elf_next_toc_section. This function removes duplicate GOT
10270 entries. */
10271
10272bfd_boolean
10273ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM
10274{
10275 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM
10276 struct bfd *ibfd, *ibfd2;
10277 bfd_boolean done_something;
10278
10279 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 10280
7865406b
AM
10281 if (!htab->do_multi_toc)
10282 return FALSE;
10283
d0fae19d 10284 /* Merge global sym got entries within a toc group. */
927be08e
AM
10285 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10286
10287 /* And tlsld_got. */
10288 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10289 {
10290 struct got_entry *ent, *ent2;
10291
10292 if (!is_ppc64_elf (ibfd))
10293 continue;
10294
10295 ent = ppc64_tlsld_got (ibfd);
10296 if (!ent->is_indirect
10297 && ent->got.offset != (bfd_vma) -1)
10298 {
10299 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10300 {
10301 if (!is_ppc64_elf (ibfd2))
10302 continue;
10303
10304 ent2 = ppc64_tlsld_got (ibfd2);
10305 if (!ent2->is_indirect
10306 && ent2->got.offset != (bfd_vma) -1
10307 && elf_gp (ibfd2) == elf_gp (ibfd))
10308 {
10309 ent2->is_indirect = TRUE;
10310 ent2->got.ent = ent;
10311 }
10312 }
10313 }
10314 }
10315
10316 /* Zap sizes of got sections. */
10317 htab->reliplt->rawsize = htab->reliplt->size;
10318 htab->reliplt->size -= htab->got_reli_size;
10319 htab->got_reli_size = 0;
10320
10321 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10322 {
10323 asection *got, *relgot;
10324
10325 if (!is_ppc64_elf (ibfd))
10326 continue;
10327
10328 got = ppc64_elf_tdata (ibfd)->got;
10329 if (got != NULL)
10330 {
10331 got->rawsize = got->size;
10332 got->size = 0;
10333 relgot = ppc64_elf_tdata (ibfd)->relgot;
10334 relgot->rawsize = relgot->size;
10335 relgot->size = 0;
10336 }
10337 }
10338
10339 /* Now reallocate the got, local syms first. We don't need to
10340 allocate section contents again since we never increase size. */
10341 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10342 {
10343 struct got_entry **lgot_ents;
10344 struct got_entry **end_lgot_ents;
10345 struct plt_entry **local_plt;
10346 struct plt_entry **end_local_plt;
f961d9dd 10347 unsigned char *lgot_masks;
927be08e
AM
10348 bfd_size_type locsymcount;
10349 Elf_Internal_Shdr *symtab_hdr;
10350 asection *s, *srel;
10351
10352 if (!is_ppc64_elf (ibfd))
10353 continue;
10354
10355 lgot_ents = elf_local_got_ents (ibfd);
10356 if (!lgot_ents)
10357 continue;
10358
10359 symtab_hdr = &elf_symtab_hdr (ibfd);
10360 locsymcount = symtab_hdr->sh_info;
10361 end_lgot_ents = lgot_ents + locsymcount;
10362 local_plt = (struct plt_entry **) end_lgot_ents;
10363 end_local_plt = local_plt + locsymcount;
f961d9dd 10364 lgot_masks = (unsigned char *) end_local_plt;
927be08e
AM
10365 s = ppc64_elf_tdata (ibfd)->got;
10366 srel = ppc64_elf_tdata (ibfd)->relgot;
10367 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10368 {
10369 struct got_entry *ent;
10370
10371 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d
AM
10372 {
10373 unsigned int num = 1;
10374 ent->got.offset = s->size;
10375 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10376 num = 2;
10377 s->size += num * 8;
10378 if (info->shared)
10379 srel->size += num * sizeof (Elf64_External_Rela);
10380 else if ((*lgot_masks & PLT_IFUNC) != 0)
10381 {
10382 htab->reliplt->size
10383 += num * sizeof (Elf64_External_Rela);
10384 htab->got_reli_size
10385 += num * sizeof (Elf64_External_Rela);
10386 }
10387 }
927be08e
AM
10388 }
10389 }
10390
10391 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10392
10393 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10394 {
10395 struct got_entry *ent;
10396
10397 if (!is_ppc64_elf (ibfd))
10398 continue;
10399
10400 ent = ppc64_tlsld_got (ibfd);
10401 if (!ent->is_indirect
10402 && ent->got.offset != (bfd_vma) -1)
10403 {
10404 asection *s = ppc64_elf_tdata (ibfd)->got;
10405 ent->got.offset = s->size;
10406 s->size += 16;
10407 if (info->shared)
10408 {
10409 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10410 srel->size += sizeof (Elf64_External_Rela);
10411 }
10412 }
10413 }
10414
10415 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10416 if (!done_something)
10417 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10418 {
10419 asection *got;
10420
10421 if (!is_ppc64_elf (ibfd))
10422 continue;
10423
10424 got = ppc64_elf_tdata (ibfd)->got;
10425 if (got != NULL)
10426 {
10427 done_something = got->rawsize != got->size;
10428 if (done_something)
10429 break;
10430 }
10431 }
10432
10433 if (done_something)
10434 (*htab->layout_sections_again) ();
10435
10436 /* Set up for second pass over toc sections to recalculate elf_gp
10437 on input sections. */
10438 htab->toc_bfd = NULL;
10439 htab->toc_first_sec = NULL;
10440 htab->second_toc_pass = TRUE;
10441 return done_something;
10442}
10443
10444/* Called after second pass of multitoc partitioning. */
10445
10446void
10447ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10448{
10449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10450
10451 /* After the second pass, toc_curr tracks the TOC offset used
10452 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 10453 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM
10454}
10455
9b5ecbd0
AM
10456/* No toc references were found in ISEC. If the code in ISEC makes no
10457 calls, then there's no need to use toc adjusting stubs when branching
10458 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM
10459 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10460 needed, and 2 if a cyclical call-graph was found but no other reason
10461 for a stub was detected. If called from the top level, a return of
10462 2 means the same as a return of 0. */
9b5ecbd0
AM
10463
10464static int
4ce794b7 10465toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 10466{
9b5ecbd0 10467 int ret;
70cc837d
AM
10468
10469 /* Mark this section as checked. */
10470 isec->call_check_done = 1;
9b5ecbd0 10471
772119ce
AM
10472 /* We know none of our code bearing sections will need toc stubs. */
10473 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10474 return 0;
10475
eea6121a 10476 if (isec->size == 0)
082c50f8
AM
10477 return 0;
10478
4c52953f
AM
10479 if (isec->output_section == NULL)
10480 return 0;
10481
4c52953f 10482 ret = 0;
70cc837d 10483 if (isec->reloc_count != 0)
9b5ecbd0 10484 {
70cc837d
AM
10485 Elf_Internal_Rela *relstart, *rel;
10486 Elf_Internal_Sym *local_syms;
10487 struct ppc_link_hash_table *htab;
2917689a 10488
70cc837d
AM
10489 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10490 info->keep_memory);
10491 if (relstart == NULL)
10492 return -1;
90aecf7a 10493
70cc837d
AM
10494 /* Look for branches to outside of this section. */
10495 local_syms = NULL;
10496 htab = ppc_hash_table (info);
10497 if (htab == NULL)
10498 return -1;
4c52953f 10499
70cc837d 10500 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 10501 {
70cc837d
AM
10502 enum elf_ppc64_reloc_type r_type;
10503 unsigned long r_symndx;
10504 struct elf_link_hash_entry *h;
10505 struct ppc_link_hash_entry *eh;
10506 Elf_Internal_Sym *sym;
10507 asection *sym_sec;
10508 struct _opd_sec_data *opd;
10509 bfd_vma sym_value;
10510 bfd_vma dest;
10511
10512 r_type = ELF64_R_TYPE (rel->r_info);
10513 if (r_type != R_PPC64_REL24
10514 && r_type != R_PPC64_REL14
10515 && r_type != R_PPC64_REL14_BRTAKEN
10516 && r_type != R_PPC64_REL14_BRNTAKEN)
10517 continue;
4c52953f 10518
70cc837d
AM
10519 r_symndx = ELF64_R_SYM (rel->r_info);
10520 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10521 isec->owner))
4c52953f 10522 {
70cc837d
AM
10523 ret = -1;
10524 break;
10525 }
4c52953f 10526
70cc837d
AM
10527 /* Calls to dynamic lib functions go through a plt call stub
10528 that uses r2. */
10529 eh = (struct ppc_link_hash_entry *) h;
10530 if (eh != NULL
10531 && (eh->elf.plt.plist != NULL
10532 || (eh->oh != NULL
10533 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10534 {
10535 ret = 1;
10536 break;
4c52953f
AM
10537 }
10538
70cc837d
AM
10539 if (sym_sec == NULL)
10540 /* Ignore other undefined symbols. */
4c52953f 10541 continue;
4c52953f 10542
70cc837d
AM
10543 /* Assume branches to other sections not included in the
10544 link need stubs too, to cover -R and absolute syms. */
10545 if (sym_sec->output_section == NULL)
10546 {
10547 ret = 1;
10548 break;
10549 }
4c52953f 10550
70cc837d
AM
10551 if (h == NULL)
10552 sym_value = sym->st_value;
10553 else
10554 {
10555 if (h->root.type != bfd_link_hash_defined
10556 && h->root.type != bfd_link_hash_defweak)
10557 abort ();
10558 sym_value = h->root.u.def.value;
10559 }
10560 sym_value += rel->r_addend;
4c52953f 10561
70cc837d
AM
10562 /* If this branch reloc uses an opd sym, find the code section. */
10563 opd = get_opd_info (sym_sec);
10564 if (opd != NULL)
10565 {
10566 if (h == NULL && opd->adjust != NULL)
10567 {
10568 long adjust;
4c52953f 10569
70cc837d
AM
10570 adjust = opd->adjust[sym->st_value / 8];
10571 if (adjust == -1)
10572 /* Assume deleted functions won't ever be called. */
10573 continue;
10574 sym_value += adjust;
10575 }
4c52953f 10576
70cc837d
AM
10577 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10578 if (dest == (bfd_vma) -1)
10579 continue;
10580 }
10581 else
10582 dest = (sym_value
10583 + sym_sec->output_offset
10584 + sym_sec->output_section->vma);
4c52953f 10585
70cc837d
AM
10586 /* Ignore branch to self. */
10587 if (sym_sec == isec)
10588 continue;
4c52953f 10589
70cc837d
AM
10590 /* If the called function uses the toc, we need a stub. */
10591 if (sym_sec->has_toc_reloc
10592 || sym_sec->makes_toc_func_call)
4c52953f 10593 {
70cc837d 10594 ret = 1;
4c52953f
AM
10595 break;
10596 }
70cc837d
AM
10597
10598 /* Assume any branch that needs a long branch stub might in fact
10599 need a plt_branch stub. A plt_branch stub uses r2. */
10600 else if (dest - (isec->output_offset
10601 + isec->output_section->vma
10602 + rel->r_offset) + (1 << 25) >= (2 << 25))
4c52953f 10603 {
70cc837d
AM
10604 ret = 1;
10605 break;
10606 }
10607
10608 /* If calling back to a section in the process of being
10609 tested, we can't say for sure that no toc adjusting stubs
10610 are needed, so don't return zero. */
10611 else if (sym_sec->call_check_in_progress)
10612 ret = 2;
10613
10614 /* Branches to another section that itself doesn't have any TOC
10615 references are OK. Recursively call ourselves to check. */
10616 else if (!sym_sec->call_check_done)
10617 {
10618 int recur;
10619
10620 /* Mark current section as indeterminate, so that other
10621 sections that call back to current won't be marked as
10622 known. */
10623 isec->call_check_in_progress = 1;
10624 recur = toc_adjusting_stub_needed (info, sym_sec);
10625 isec->call_check_in_progress = 0;
10626
4c52953f
AM
10627 if (recur != 0)
10628 {
70cc837d
AM
10629 ret = recur;
10630 if (recur != 2)
10631 break;
4c52953f
AM
10632 }
10633 }
4c52953f 10634 }
70cc837d
AM
10635
10636 if (local_syms != NULL
10637 && (elf_symtab_hdr (isec->owner).contents
10638 != (unsigned char *) local_syms))
10639 free (local_syms);
10640 if (elf_section_data (isec)->relocs != relstart)
10641 free (relstart);
9b5ecbd0
AM
10642 }
10643
70cc837d
AM
10644 if ((ret & 1) == 0
10645 && isec->map_head.s != NULL
10646 && (strcmp (isec->output_section->name, ".init") == 0
10647 || strcmp (isec->output_section->name, ".fini") == 0))
10648 {
10649 if (isec->map_head.s->has_toc_reloc
10650 || isec->map_head.s->makes_toc_func_call)
10651 ret = 1;
10652 else if (!isec->map_head.s->call_check_done)
10653 {
10654 int recur;
10655 isec->call_check_in_progress = 1;
10656 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10657 isec->call_check_in_progress = 0;
10658 if (recur != 0)
10659 ret = recur;
10660 }
10661 }
10662
10663 if (ret == 1)
10664 isec->makes_toc_func_call = 1;
4c52953f 10665
9b5ecbd0
AM
10666 return ret;
10667}
10668
721956f4
AM
10669/* The linker repeatedly calls this function for each input section,
10670 in the order that input sections are linked into output sections.
10671 Build lists of input sections to determine groupings between which
10672 we may insert linker stubs. */
10673
9b5ecbd0 10674bfd_boolean
4ce794b7 10675ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM
10676{
10677 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10678
4dfe6ac6
NC
10679 if (htab == NULL)
10680 return FALSE;
10681
734b6cf9
AM
10682 if ((isec->output_section->flags & SEC_CODE) != 0
10683 && isec->output_section->index <= htab->top_index)
721956f4 10684 {
734b6cf9 10685 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 10686 /* Steal the link_sec pointer for our list. */
721956f4 10687#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM
10688 /* This happens to make the list in reverse order,
10689 which is what we want. */
734b6cf9
AM
10690 PREV_SEC (isec) = *list;
10691 *list = isec;
721956f4 10692 }
ad8e1ba5 10693
4c52953f 10694 if (htab->multi_toc_needed)
9b5ecbd0 10695 {
4c52953f
AM
10696 /* If a code section has a function that uses the TOC then we need
10697 to use the right TOC (obviously). Also, make sure that .opd gets
10698 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM
10699 can't find their function symbol (shouldn't ever happen now).
10700 Also specially treat .fixup for the linux kernel. .fixup
10701 contains branches, but only back to the function that hit an
10702 exception. */
10703 if (isec->has_toc_reloc
10704 || (isec->flags & SEC_CODE) == 0
10705 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM
10706 {
10707 if (elf_gp (isec->owner) != 0)
10708 htab->toc_curr = elf_gp (isec->owner);
10709 }
6683a28d
AM
10710 else
10711 {
10712 if (!isec->call_check_done
10713 && toc_adjusting_stub_needed (info, isec) < 0)
10714 return FALSE;
10715 /* If we make a local call from this section, ie. a branch
10716 without a following nop, then we have no place to put a
10717 toc restoring insn. We must use the same toc group as
10718 the callee.
10719 Testing makes_toc_func_call actually tests for *any*
10720 calls to functions that need a good toc pointer. A more
10721 precise test would be better, as this one will set
10722 incorrect values for pasted .init/.fini fragments.
10723 (Fixed later in check_pasted_section.) */
10724 if (isec->makes_toc_func_call
10725 && elf_gp (isec->owner) != 0)
10726 htab->toc_curr = elf_gp (isec->owner);
10727 }
9b5ecbd0 10728 }
ad8e1ba5
AM
10729
10730 /* Functions that don't use the TOC can belong in any TOC group.
6683a28d 10731 Use the last TOC base. */
ad8e1ba5 10732 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 10733 return TRUE;
721956f4
AM
10734}
10735
70cc837d
AM
10736/* Check that all .init and .fini sections use the same toc, if they
10737 have toc relocs. */
10738
10739static bfd_boolean
10740check_pasted_section (struct bfd_link_info *info, const char *name)
10741{
10742 asection *o = bfd_get_section_by_name (info->output_bfd, name);
10743
10744 if (o != NULL)
10745 {
10746 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10747 bfd_vma toc_off = 0;
10748 asection *i;
10749
10750 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10751 if (i->has_toc_reloc)
10752 {
10753 if (toc_off == 0)
10754 toc_off = htab->stub_group[i->id].toc_off;
10755 else if (toc_off != htab->stub_group[i->id].toc_off)
10756 return FALSE;
10757 }
6683a28d
AM
10758
10759 if (toc_off == 0)
10760 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10761 if (i->makes_toc_func_call)
10762 {
10763 toc_off = htab->stub_group[i->id].toc_off;
10764 break;
10765 }
10766
70cc837d
AM
10767 /* Make sure the whole pasted function uses the same toc offset. */
10768 if (toc_off != 0)
10769 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10770 htab->stub_group[i->id].toc_off = toc_off;
10771 }
10772 return TRUE;
10773}
10774
10775bfd_boolean
10776ppc64_elf_check_init_fini (struct bfd_link_info *info)
10777{
10778 return (check_pasted_section (info, ".init")
10779 & check_pasted_section (info, ".fini"));
10780}
10781
721956f4
AM
10782/* See whether we can group stub sections together. Grouping stub
10783 sections may result in fewer stubs. More importantly, we need to
10784 put all .init* and .fini* stubs at the beginning of the .init or
10785 .fini output sections respectively, because glibc splits the
10786 _init and _fini functions into multiple parts. Putting a stub in
10787 the middle of a function is not a good idea. */
10788
10789static void
4ce794b7
AM
10790group_sections (struct ppc_link_hash_table *htab,
10791 bfd_size_type stub_group_size,
10792 bfd_boolean stubs_always_before_branch)
721956f4 10793{
7c8fe5c4
AM
10794 asection **list;
10795 bfd_size_type stub14_group_size;
10796 bfd_boolean suppress_size_errors;
10797
10798 suppress_size_errors = FALSE;
10799 stub14_group_size = stub_group_size;
10800 if (stub_group_size == 1)
10801 {
10802 /* Default values. */
10803 if (stubs_always_before_branch)
10804 {
10805 stub_group_size = 0x1e00000;
10806 stub14_group_size = 0x7800;
10807 }
10808 else
10809 {
10810 stub_group_size = 0x1c00000;
10811 stub14_group_size = 0x7000;
10812 }
10813 suppress_size_errors = TRUE;
10814 }
10815
10816 list = htab->input_list + htab->top_index;
734b6cf9 10817 do
721956f4 10818 {
734b6cf9
AM
10819 asection *tail = *list;
10820 while (tail != NULL)
721956f4 10821 {
734b6cf9
AM
10822 asection *curr;
10823 asection *prev;
10824 bfd_size_type total;
10825 bfd_boolean big_sec;
10826 bfd_vma curr_toc;
10827
10828 curr = tail;
eea6121a 10829 total = tail->size;
6bee8834
AM
10830 big_sec = total > (ppc64_elf_section_data (tail) != NULL
10831 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM
10832 ? stub14_group_size : stub_group_size);
10833 if (big_sec && !suppress_size_errors)
5c3dead3
AM
10834 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10835 tail->owner, tail);
734b6cf9
AM
10836 curr_toc = htab->stub_group[tail->id].toc_off;
10837
10838 while ((prev = PREV_SEC (curr)) != NULL
10839 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM
10840 < (ppc64_elf_section_data (prev) != NULL
10841 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 10842 ? stub14_group_size : stub_group_size))
ad8e1ba5 10843 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM
10844 curr = prev;
10845
10846 /* OK, the size from the start of CURR to the end is less
10847 than stub_group_size and thus can be handled by one stub
10848 section. (or the tail section is itself larger than
10849 stub_group_size, in which case we may be toast.) We
10850 should really be keeping track of the total size of stubs
10851 added here, as stubs contribute to the final output
10852 section size. That's a little tricky, and this way will
10853 only break if stubs added make the total size more than
10854 2^25, ie. for the default stub_group_size, if stubs total
10855 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10856 do
721956f4
AM
10857 {
10858 prev = PREV_SEC (tail);
734b6cf9 10859 /* Set up this stub group. */
721956f4
AM
10860 htab->stub_group[tail->id].link_sec = curr;
10861 }
734b6cf9
AM
10862 while (tail != curr && (tail = prev) != NULL);
10863
10864 /* But wait, there's more! Input sections up to stub_group_size
10865 bytes before the stub section can be handled by it too.
10866 Don't do this if we have a really large section after the
10867 stubs, as adding more stubs increases the chance that
10868 branches may not reach into the stub section. */
10869 if (!stubs_always_before_branch && !big_sec)
10870 {
10871 total = 0;
10872 while (prev != NULL
10873 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM
10874 < (ppc64_elf_section_data (prev) != NULL
10875 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 10876 ? stub14_group_size : stub_group_size))
734b6cf9
AM
10877 && htab->stub_group[prev->id].toc_off == curr_toc)
10878 {
10879 tail = prev;
10880 prev = PREV_SEC (tail);
10881 htab->stub_group[tail->id].link_sec = curr;
10882 }
10883 }
10884 tail = prev;
721956f4
AM
10885 }
10886 }
734b6cf9
AM
10887 while (list-- != htab->input_list);
10888 free (htab->input_list);
721956f4
AM
10889#undef PREV_SEC
10890}
10891
721956f4
AM
10892/* Determine and set the size of the stub section for a final link.
10893
10894 The basic idea here is to examine all the relocations looking for
10895 PC-relative calls to a target that is unreachable with a "bl"
10896 instruction. */
10897
b34976b6 10898bfd_boolean
927be08e 10899ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
721956f4
AM
10900{
10901 bfd_size_type stub_group_size;
b34976b6 10902 bfd_boolean stubs_always_before_branch;
721956f4
AM
10903 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10904
4dfe6ac6
NC
10905 if (htab == NULL)
10906 return FALSE;
10907
721956f4
AM
10908 stubs_always_before_branch = group_size < 0;
10909 if (group_size < 0)
10910 stub_group_size = -group_size;
10911 else
10912 stub_group_size = group_size;
721956f4
AM
10913
10914 group_sections (htab, stub_group_size, stubs_always_before_branch);
10915
721956f4
AM
10916 while (1)
10917 {
10918 bfd *input_bfd;
10919 unsigned int bfd_indx;
10920 asection *stub_sec;
721956f4
AM
10921
10922 htab->stub_iteration += 1;
721956f4
AM
10923
10924 for (input_bfd = info->input_bfds, bfd_indx = 0;
10925 input_bfd != NULL;
10926 input_bfd = input_bfd->link_next, bfd_indx++)
10927 {
10928 Elf_Internal_Shdr *symtab_hdr;
10929 asection *section;
6cdc0ccc 10930 Elf_Internal_Sym *local_syms = NULL;
721956f4 10931
0c8d6e5c 10932 if (!is_ppc64_elf (input_bfd))
67f93c31
AM
10933 continue;
10934
721956f4 10935 /* We'll need the symbol table in a second. */
0ffa91dd 10936 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM
10937 if (symtab_hdr->sh_info == 0)
10938 continue;
10939
721956f4
AM
10940 /* Walk over each section attached to the input bfd. */
10941 for (section = input_bfd->sections;
10942 section != NULL;
10943 section = section->next)
10944 {
721956f4 10945 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM
10946
10947 /* If there aren't any relocs, then there's nothing more
10948 to do. */
10949 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM
10950 || (section->flags & SEC_ALLOC) == 0
10951 || (section->flags & SEC_LOAD) == 0
10952 || (section->flags & SEC_CODE) == 0
721956f4
AM
10953 || section->reloc_count == 0)
10954 continue;
10955
10956 /* If this section is a link-once section that will be
10957 discarded, then don't create any stubs. */
10958 if (section->output_section == NULL
927be08e 10959 || section->output_section->owner != info->output_bfd)
721956f4
AM
10960 continue;
10961
1e2f5b6e
AM
10962 /* Get the relocs. */
10963 internal_relocs
4ce794b7 10964 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 10965 info->keep_memory);
721956f4 10966 if (internal_relocs == NULL)
1e2f5b6e 10967 goto error_ret_free_local;
721956f4
AM
10968
10969 /* Now examine each relocation. */
10970 irela = internal_relocs;
10971 irelaend = irela + section->reloc_count;
10972 for (; irela < irelaend; irela++)
10973 {
4ce794b7
AM
10974 enum elf_ppc64_reloc_type r_type;
10975 unsigned int r_indx;
721956f4
AM
10976 enum ppc_stub_type stub_type;
10977 struct ppc_stub_hash_entry *stub_entry;
8387904d 10978 asection *sym_sec, *code_sec;
e054468f 10979 bfd_vma sym_value, code_value;
721956f4 10980 bfd_vma destination;
8843416a 10981 bfd_boolean ok_dest;
721956f4 10982 struct ppc_link_hash_entry *hash;
8387904d 10983 struct ppc_link_hash_entry *fdh;
411e1bfb
AM
10984 struct elf_link_hash_entry *h;
10985 Elf_Internal_Sym *sym;
721956f4
AM
10986 char *stub_name;
10987 const asection *id_sec;
74f0fb50 10988 struct _opd_sec_data *opd;
e054468f 10989 struct plt_entry *plt_ent;
721956f4
AM
10990
10991 r_type = ELF64_R_TYPE (irela->r_info);
10992 r_indx = ELF64_R_SYM (irela->r_info);
10993
4ce794b7 10994 if (r_type >= R_PPC64_max)
721956f4
AM
10995 {
10996 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 10997 goto error_ret_free_internal;
721956f4
AM
10998 }
10999
11000 /* Only look for stubs on branch instructions. */
4ce794b7
AM
11001 if (r_type != R_PPC64_REL24
11002 && r_type != R_PPC64_REL14
11003 && r_type != R_PPC64_REL14_BRTAKEN
11004 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM
11005 continue;
11006
11007 /* Now determine the call target, its name, value,
11008 section. */
411e1bfb
AM
11009 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11010 r_indx, input_bfd))
11011 goto error_ret_free_internal;
11012 hash = (struct ppc_link_hash_entry *) h;
11013
8843416a 11014 ok_dest = FALSE;
8387904d 11015 fdh = NULL;
7fe2b9a6 11016 sym_value = 0;
411e1bfb 11017 if (hash == NULL)
721956f4 11018 {
411e1bfb 11019 sym_value = sym->st_value;
8843416a 11020 ok_dest = TRUE;
721956f4 11021 }
7fe2b9a6
AM
11022 else if (hash->elf.root.type == bfd_link_hash_defined
11023 || hash->elf.root.type == bfd_link_hash_defweak)
11024 {
11025 sym_value = hash->elf.root.u.def.value;
11026 if (sym_sec->output_section != NULL)
11027 ok_dest = TRUE;
11028 }
11029 else if (hash->elf.root.type == bfd_link_hash_undefweak
11030 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 11031 {
99877b66 11032 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM
11033 use the func descriptor sym instead if it is
11034 defined. */
ceb1f1ef 11035 if (hash->elf.root.root.string[0] == '.'
b31867b6 11036 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 11037 {
8387904d
AM
11038 if (fdh->elf.root.type == bfd_link_hash_defined
11039 || fdh->elf.root.type == bfd_link_hash_defweak)
11040 {
11041 sym_sec = fdh->elf.root.u.def.section;
11042 sym_value = fdh->elf.root.u.def.value;
11043 if (sym_sec->output_section != NULL)
11044 ok_dest = TRUE;
11045 }
99877b66
AM
11046 else
11047 fdh = NULL;
8387904d 11048 }
7fe2b9a6
AM
11049 }
11050 else
11051 {
11052 bfd_set_error (bfd_error_bad_value);
11053 goto error_ret_free_internal;
721956f4
AM
11054 }
11055
8843416a
AM
11056 destination = 0;
11057 if (ok_dest)
11058 {
11059 sym_value += irela->r_addend;
11060 destination = (sym_value
11061 + sym_sec->output_offset
11062 + sym_sec->output_section->vma);
11063 }
11064
8387904d 11065 code_sec = sym_sec;
e054468f 11066 code_value = sym_value;
74f0fb50
AM
11067 opd = get_opd_info (sym_sec);
11068 if (opd != NULL)
8387904d
AM
11069 {
11070 bfd_vma dest;
11071
74f0fb50 11072 if (hash == NULL && opd->adjust != NULL)
8387904d 11073 {
74f0fb50 11074 long adjust = opd->adjust[sym_value / 8];
8387904d
AM
11075 if (adjust == -1)
11076 continue;
e054468f 11077 code_value += adjust;
8387904d
AM
11078 sym_value += adjust;
11079 }
11080 dest = opd_entry_value (sym_sec, sym_value,
e054468f 11081 &code_sec, &code_value);
8387904d
AM
11082 if (dest != (bfd_vma) -1)
11083 {
11084 destination = dest;
11085 if (fdh != NULL)
11086 {
11087 /* Fixup old ABI sym to point at code
11088 entry. */
99877b66 11089 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 11090 hash->elf.root.u.def.section = code_sec;
e054468f 11091 hash->elf.root.u.def.value = code_value;
8387904d
AM
11092 }
11093 }
11094 }
11095
721956f4 11096 /* Determine what (if any) linker stub is needed. */
e054468f 11097 plt_ent = NULL;
721956f4 11098 stub_type = ppc_type_of_stub (section, irela, &hash,
e054468f 11099 &plt_ent, destination);
ad8e1ba5
AM
11100
11101 if (stub_type != ppc_stub_plt_call)
11102 {
11103 /* Check whether we need a TOC adjusting stub.
11104 Since the linker pastes together pieces from
11105 different object files when creating the
11106 _init and _fini functions, it may be that a
11107 call to what looks like a local sym is in
11108 fact a call needing a TOC adjustment. */
8387904d
AM
11109 if (code_sec != NULL
11110 && code_sec->output_section != NULL
11111 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 11112 != htab->stub_group[section->id].toc_off)
4c52953f
AM
11113 && (code_sec->has_toc_reloc
11114 || code_sec->makes_toc_func_call))
ad8e1ba5
AM
11115 stub_type = ppc_stub_long_branch_r2off;
11116 }
11117
721956f4
AM
11118 if (stub_type == ppc_stub_none)
11119 continue;
11120
411e1bfb
AM
11121 /* __tls_get_addr calls might be eliminated. */
11122 if (stub_type != ppc_stub_plt_call
11123 && hash != NULL
8387904d
AM
11124 && (hash == htab->tls_get_addr
11125 || hash == htab->tls_get_addr_fd)
411e1bfb
AM
11126 && section->has_tls_reloc
11127 && irela != internal_relocs)
11128 {
11129 /* Get tls info. */
f961d9dd 11130 unsigned char *tls_mask;
411e1bfb 11131
3a71aa26 11132 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM
11133 irela - 1, input_bfd))
11134 goto error_ret_free_internal;
e7b938ca 11135 if (*tls_mask != 0)
411e1bfb
AM
11136 continue;
11137 }
11138
721956f4
AM
11139 /* Support for grouping stub sections. */
11140 id_sec = htab->stub_group[section->id].link_sec;
11141
11142 /* Get the name of this stub. */
11143 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11144 if (!stub_name)
11145 goto error_ret_free_internal;
11146
11147 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 11148 stub_name, FALSE, FALSE);
721956f4
AM
11149 if (stub_entry != NULL)
11150 {
11151 /* The proper stub has already been created. */
11152 free (stub_name);
11153 continue;
11154 }
11155
25f53a85 11156 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM
11157 if (stub_entry == NULL)
11158 {
11159 free (stub_name);
6cdc0ccc
AM
11160 error_ret_free_internal:
11161 if (elf_section_data (section)->relocs == NULL)
11162 free (internal_relocs);
11163 error_ret_free_local:
11164 if (local_syms != NULL
11165 && (symtab_hdr->contents
11166 != (unsigned char *) local_syms))
11167 free (local_syms);
b34976b6 11168 return FALSE;
721956f4
AM
11169 }
11170
ad8e1ba5 11171 stub_entry->stub_type = stub_type;
e054468f
AM
11172 if (stub_type != ppc_stub_plt_call)
11173 {
11174 stub_entry->target_value = code_value;
11175 stub_entry->target_section = code_sec;
11176 }
11177 else
11178 {
11179 stub_entry->target_value = sym_value;
11180 stub_entry->target_section = sym_sec;
11181 }
721956f4 11182 stub_entry->h = hash;
e054468f 11183 stub_entry->plt_ent = plt_ent;
411e1bfb 11184 stub_entry->addend = irela->r_addend;
ee75fd95
AM
11185
11186 if (stub_entry->h != NULL)
11187 htab->stub_globals += 1;
721956f4
AM
11188 }
11189
11190 /* We're done with the internal relocs, free them. */
6cdc0ccc 11191 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 11192 free (internal_relocs);
721956f4 11193 }
6cdc0ccc
AM
11194
11195 if (local_syms != NULL
11196 && symtab_hdr->contents != (unsigned char *) local_syms)
11197 {
11198 if (!info->keep_memory)
11199 free (local_syms);
11200 else
11201 symtab_hdr->contents = (unsigned char *) local_syms;
11202 }
721956f4
AM
11203 }
11204
5c3dead3 11205 /* We may have added some stubs. Find out the new size of the
721956f4
AM
11206 stub sections. */
11207 for (stub_sec = htab->stub_bfd->sections;
11208 stub_sec != NULL;
11209 stub_sec = stub_sec->next)
e717da7e 11210 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 11211 {
5c3dead3 11212 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM
11213 stub_sec->size = 0;
11214 stub_sec->reloc_count = 0;
84f5d08e 11215 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 11216 }
eea6121a
AM
11217
11218 htab->brlt->size = 0;
84f5d08e
AM
11219 htab->brlt->reloc_count = 0;
11220 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 11221 if (htab->relbrlt != NULL)
eea6121a 11222 htab->relbrlt->size = 0;
721956f4 11223
63bc6f6c 11224 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 11225
176a0d42
AM
11226 if (info->emitrelocations
11227 && htab->glink != NULL && htab->glink->size != 0)
11228 {
11229 htab->glink->reloc_count = 1;
11230 htab->glink->flags |= SEC_RELOC;
11231 }
11232
5c3dead3
AM
11233 for (stub_sec = htab->stub_bfd->sections;
11234 stub_sec != NULL;
11235 stub_sec = stub_sec->next)
11236 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11237 && stub_sec->rawsize != stub_sec->size)
11238 break;
11239
11240 /* Exit from this loop when no stubs have been added, and no stubs
11241 have changed size. */
11242 if (stub_sec == NULL)
11243 break;
11244
721956f4
AM
11245 /* Ask the linker to do its stuff. */
11246 (*htab->layout_sections_again) ();
11247 }
11248
c456f082 11249 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM
11250 section is empty, but it's too late. If we strip sections here,
11251 the dynamic symbol table is corrupted since the section symbol
11252 for the stripped section isn't written. */
721956f4 11253
b34976b6 11254 return TRUE;
721956f4
AM
11255}
11256
11257/* Called after we have determined section placement. If sections
805fc799 11258 move, we'll be called again. Provide a value for TOCstart. */
721956f4 11259
805fc799 11260bfd_vma
4ce794b7 11261ppc64_elf_toc (bfd *obfd)
721956f4 11262{
805fc799
AM
11263 asection *s;
11264 bfd_vma TOCstart;
721956f4 11265
805fc799
AM
11266 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11267 order. The TOC starts where the first of these sections starts. */
11268 s = bfd_get_section_by_name (obfd, ".got");
e054468f 11269 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 11270 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 11271 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 11272 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 11273 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 11274 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 11275 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM
11276 {
11277 /* This may happen for
11278 o references to TOC base (SYM@toc / TOC[tc0]) without a
11279 .toc directive
11280 o bad linker script
11281 o --gc-sections and empty TOC sections
11282
11283 FIXME: Warn user? */
11284
11285 /* Look for a likely section. We probably won't even be
11286 using TOCstart. */
11287 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM
11288 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11289 | SEC_EXCLUDE))
805fc799
AM
11290 == (SEC_ALLOC | SEC_SMALL_DATA))
11291 break;
721956f4 11292 if (s == NULL)
805fc799 11293 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 11294 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM
11295 == (SEC_ALLOC | SEC_SMALL_DATA))
11296 break;
721956f4 11297 if (s == NULL)
805fc799 11298 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM
11299 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11300 == SEC_ALLOC)
805fc799 11301 break;
721956f4 11302 if (s == NULL)
805fc799 11303 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 11304 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM
11305 break;
11306 }
721956f4 11307
805fc799
AM
11308 TOCstart = 0;
11309 if (s != NULL)
11310 TOCstart = s->output_section->vma + s->output_offset;
721956f4 11311
805fc799 11312 return TOCstart;
721956f4
AM
11313}
11314
11315/* Build all the stubs associated with the current output file.
11316 The stubs are kept in a hash table attached to the main linker
11317 hash table. This function is called via gldelf64ppc_finish. */
11318
b34976b6 11319bfd_boolean
4ce794b7
AM
11320ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11321 struct bfd_link_info *info,
11322 char **stats)
5d1634d7
AM
11323{
11324 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 11325 asection *stub_sec;
5d1634d7 11326 bfd_byte *p;
e717da7e 11327 int stub_sec_count = 0;
5d1634d7 11328
4dfe6ac6
NC
11329 if (htab == NULL)
11330 return FALSE;
11331
ad8e1ba5 11332 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM
11333
11334 /* Allocate memory to hold the linker stubs. */
721956f4
AM
11335 for (stub_sec = htab->stub_bfd->sections;
11336 stub_sec != NULL;
11337 stub_sec = stub_sec->next)
eea6121a
AM
11338 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11339 && stub_sec->size != 0)
e717da7e 11340 {
eea6121a
AM
11341 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11342 if (stub_sec->contents == NULL)
11343 return FALSE;
11344 /* We want to check that built size is the same as calculated
11345 size. rawsize is a convenient location to use. */
11346 stub_sec->rawsize = stub_sec->size;
11347 stub_sec->size = 0;
e717da7e 11348 }
5d1634d7 11349
23eb7e01 11350 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 11351 {
9f951329 11352 unsigned int indx;
ad8e1ba5 11353 bfd_vma plt0;
9f951329 11354
721956f4 11355 /* Build the .glink plt call stub. */
97b639ba
AM
11356 if (htab->emit_stub_syms)
11357 {
11358 struct elf_link_hash_entry *h;
468392fb
AM
11359 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11360 TRUE, FALSE, FALSE);
97b639ba
AM
11361 if (h == NULL)
11362 return FALSE;
11363 if (h->root.type == bfd_link_hash_new)
11364 {
11365 h->root.type = bfd_link_hash_defined;
11366 h->root.u.def.section = htab->glink;
ee4bf8d2 11367 h->root.u.def.value = 8;
f5385ebf
AM
11368 h->ref_regular = 1;
11369 h->def_regular = 1;
11370 h->ref_regular_nonweak = 1;
11371 h->forced_local = 1;
11372 h->non_elf = 0;
97b639ba
AM
11373 }
11374 }
176a0d42
AM
11375 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11376 if (info->emitrelocations)
11377 {
11378 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11379 if (r == NULL)
11380 return FALSE;
11381 r->r_offset = (htab->glink->output_offset
11382 + htab->glink->output_section->vma);
11383 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11384 r->r_addend = plt0;
11385 }
4ce794b7 11386 p = htab->glink->contents;
176a0d42 11387 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM
11388 bfd_put_64 (htab->glink->owner, plt0, p);
11389 p += 8;
11390 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 11391 p += 4;
ee4bf8d2 11392 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 11393 p += 4;
ee4bf8d2 11394 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 11395 p += 4;
ee4bf8d2 11396 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 11397 p += 4;
ee4bf8d2 11398 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 11399 p += 4;
ee4bf8d2 11400 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 11401 p += 4;
ee4bf8d2 11402 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 11403 p += 4;
4ce794b7 11404 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 11405 p += 4;
4ce794b7 11406 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 11407 p += 4;
4ce794b7 11408 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 11409 p += 4;
4ce794b7 11410 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 11411 p += 4;
ee4bf8d2
AM
11412 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11413 {
11414 bfd_put_32 (htab->glink->owner, NOP, p);
11415 p += 4;
11416 }
ad8e1ba5 11417
9f951329
AM
11418 /* Build the .glink lazy link call stubs. */
11419 indx = 0;
eea6121a 11420 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM
11421 {
11422 if (indx < 0x8000)
11423 {
4ce794b7 11424 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM
11425 p += 4;
11426 }
11427 else
11428 {
4ce794b7 11429 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 11430 p += 4;
4ce794b7 11431 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM
11432 p += 4;
11433 }
4ce794b7 11434 bfd_put_32 (htab->glink->owner,
ee4bf8d2 11435 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 11436 indx++;
9f951329
AM
11437 p += 4;
11438 }
eea6121a 11439 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 11440 }
5d1634d7 11441
eea6121a 11442 if (htab->brlt->size != 0)
721956f4 11443 {
4ce794b7 11444 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 11445 htab->brlt->size);
4ce794b7 11446 if (htab->brlt->contents == NULL)
b34976b6 11447 return FALSE;
721956f4 11448 }
ee75fd95 11449 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM
11450 {
11451 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 11452 htab->relbrlt->size);
63bc6f6c
AM
11453 if (htab->relbrlt->contents == NULL)
11454 return FALSE;
11455 }
5d1634d7 11456
721956f4
AM
11457 /* Build the stubs as directed by the stub hash table. */
11458 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 11459
aa8a7074
AM
11460 if (htab->relbrlt != NULL)
11461 htab->relbrlt->reloc_count = 0;
11462
721956f4
AM
11463 for (stub_sec = htab->stub_bfd->sections;
11464 stub_sec != NULL;
11465 stub_sec = stub_sec->next)
e717da7e
AM
11466 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11467 {
11468 stub_sec_count += 1;
eea6121a 11469 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM
11470 break;
11471 }
5d1634d7 11472
721956f4 11473 if (stub_sec != NULL
eea6121a 11474 || htab->glink->rawsize != htab->glink->size)
5d1634d7 11475 {
b34976b6 11476 htab->stub_error = TRUE;
25f53a85 11477 info->callbacks->einfo (_("stubs don't match calculated size\n"));
5d1634d7 11478 }
721956f4 11479
d2a300cf
AM
11480 if (htab->stub_error)
11481 return FALSE;
11482
11483 if (stats != NULL)
11484 {
11485 *stats = bfd_malloc (500);
11486 if (*stats == NULL)
11487 return FALSE;
11488
ee75fd95 11489 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM
11490 " branch %lu\n"
11491 " toc adjust %lu\n"
11492 " long branch %lu\n"
11493 " long toc adj %lu\n"
11494 " plt call %lu"),
e717da7e 11495 stub_sec_count,
ee75fd95 11496 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM
11497 htab->stub_count[ppc_stub_long_branch - 1],
11498 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11499 htab->stub_count[ppc_stub_plt_branch - 1],
11500 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11501 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM
11502 }
11503 return TRUE;
5bd4f169
AM
11504}
11505
99877b66
AM
11506/* This function undoes the changes made by add_symbol_adjust. */
11507
11508static bfd_boolean
11509undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11510{
11511 struct ppc_link_hash_entry *eh;
11512
11513 if (h->root.type == bfd_link_hash_indirect)
11514 return TRUE;
11515
11516 if (h->root.type == bfd_link_hash_warning)
11517 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11518
11519 eh = (struct ppc_link_hash_entry *) h;
11520 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11521 return TRUE;
11522
11523 eh->elf.root.type = bfd_link_hash_undefined;
11524 return TRUE;
11525}
11526
11527void
11528ppc64_elf_restore_symbols (struct bfd_link_info *info)
11529{
11530 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC
11531
11532 if (htab != NULL)
11533 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM
11534}
11535
60124e18
AM
11536/* What to do when ld finds relocations against symbols defined in
11537 discarded sections. */
11538
11539static unsigned int
11540ppc64_elf_action_discarded (asection *sec)
11541{
11542 if (strcmp (".opd", sec->name) == 0)
11543 return 0;
11544
11545 if (strcmp (".toc", sec->name) == 0)
11546 return 0;
11547
bce50a28
JJ
11548 if (strcmp (".toc1", sec->name) == 0)
11549 return 0;
11550
60124e18
AM
11551 return _bfd_elf_default_action_discarded (sec);
11552}
11553
ba761f19 11554/* REL points to a low-part reloc on a largetoc instruction sequence.
67f0cbdb 11555 Find the matching high-part reloc instruction and verify that it
d983b7a0
AM
11556 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11557 the high-part reloc. */
67f0cbdb
AM
11558
11559static const Elf_Internal_Rela *
11560ha_reloc_match (const Elf_Internal_Rela *relocs,
11561 const Elf_Internal_Rela *rel,
d983b7a0
AM
11562 unsigned int *reg,
11563 bfd_boolean match_addend,
67f0cbdb
AM
11564 const bfd *input_bfd,
11565 const bfd_byte *contents)
11566{
11567 enum elf_ppc64_reloc_type r_type, r_type_ha;
11568 bfd_vma r_info_ha, r_addend;
11569
11570 r_type = ELF64_R_TYPE (rel->r_info);
11571 switch (r_type)
11572 {
11573 case R_PPC64_GOT_TLSLD16_LO:
11574 case R_PPC64_GOT_TLSGD16_LO:
11575 case R_PPC64_GOT_TPREL16_LO_DS:
11576 case R_PPC64_GOT_DTPREL16_LO_DS:
11577 case R_PPC64_GOT16_LO:
11578 case R_PPC64_TOC16_LO:
11579 r_type_ha = r_type + 2;
11580 break;
11581 case R_PPC64_GOT16_LO_DS:
11582 r_type_ha = R_PPC64_GOT16_HA;
11583 break;
11584 case R_PPC64_TOC16_LO_DS:
11585 r_type_ha = R_PPC64_TOC16_HA;
11586 break;
11587 default:
11588 abort ();
11589 }
11590 r_info_ha = ELF64_R_INFO (ELF64_R_SYM (rel->r_info), r_type_ha);
11591 r_addend = rel->r_addend;
11592
11593 while (--rel >= relocs)
11594 if (rel->r_info == r_info_ha
d983b7a0
AM
11595 && (!match_addend
11596 || rel->r_addend == r_addend))
67f0cbdb
AM
11597 {
11598 const bfd_byte *p = contents + (rel->r_offset & ~3);
11599 unsigned int insn = bfd_get_32 (input_bfd, p);
d983b7a0
AM
11600 if ((insn & (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11601 && (insn & (0x1f << 21)) == (*reg << 21))
11602 {
11603 *reg = (insn >> 16) & 0x1f;
11604 return rel;
11605 }
67f0cbdb
AM
11606 break;
11607 }
11608 return NULL;
11609}
11610
5bd4f169
AM
11611/* The RELOCATE_SECTION function is called by the ELF backend linker
11612 to handle the relocations for a section.
11613
11614 The relocs are always passed as Rela structures; if the section
11615 actually uses Rel structures, the r_addend field will always be
11616 zero.
11617
11618 This function is responsible for adjust the section contents as
11619 necessary, and (if using Rela relocs and generating a
1049f94e 11620 relocatable output file) adjusting the reloc addend as
5bd4f169
AM
11621 necessary.
11622
11623 This function does not have to worry about setting the reloc
11624 address or the reloc symbol index.
11625
11626 LOCAL_SYMS is a pointer to the swapped in local symbols.
11627
11628 LOCAL_SECTIONS is an array giving the section in the input file
11629 corresponding to the st_shndx field of each local symbol.
11630
11631 The global hash table entry for the global symbols can be found
11632 via elf_sym_hashes (input_bfd).
11633
1049f94e 11634 When generating relocatable output, this function must handle
5bd4f169
AM
11635 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11636 going to be the section symbol corresponding to the output
11637 section, which means that the addend must be adjusted
11638 accordingly. */
11639
b34976b6 11640static bfd_boolean
4ce794b7
AM
11641ppc64_elf_relocate_section (bfd *output_bfd,
11642 struct bfd_link_info *info,
11643 bfd *input_bfd,
11644 asection *input_section,
11645 bfd_byte *contents,
11646 Elf_Internal_Rela *relocs,
11647 Elf_Internal_Sym *local_syms,
11648 asection **local_sections)
5bd4f169 11649{
65f38f15 11650 struct ppc_link_hash_table *htab;
5bd4f169
AM
11651 Elf_Internal_Shdr *symtab_hdr;
11652 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
11653 Elf_Internal_Rela *rel;
11654 Elf_Internal_Rela *relend;
411e1bfb
AM
11655 Elf_Internal_Rela outrel;
11656 bfd_byte *loc;
411e1bfb 11657 struct got_entry **local_got_ents;
d983b7a0 11658 unsigned char *ha_opt;
5bd4f169 11659 bfd_vma TOCstart;
d983b7a0 11660 bfd_boolean no_ha_opt;
b34976b6
AM
11661 bfd_boolean ret = TRUE;
11662 bfd_boolean is_opd;
96e0dda4 11663 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 11664 bfd_boolean is_power4 = FALSE;
4fe5ca5b 11665 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 11666
65f38f15 11667 /* Initialize howto table if needed. */
5bd4f169 11668 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
11669 ppc_howto_init ();
11670
65f38f15 11671 htab = ppc_hash_table (info);
4dfe6ac6
NC
11672 if (htab == NULL)
11673 return FALSE;
ee75fd95
AM
11674
11675 /* Don't relocate stub sections. */
11676 if (input_section->owner == htab->stub_bfd)
11677 return TRUE;
11678
0c8d6e5c 11679 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 11680
411e1bfb 11681 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 11682 TOCstart = elf_gp (output_bfd);
0ffa91dd 11683 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 11684 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 11685 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
d983b7a0
AM
11686 ha_opt = NULL;
11687 no_ha_opt = FALSE;
65f38f15 11688
5bd4f169
AM
11689 rel = relocs;
11690 relend = relocs + input_section->reloc_count;
11691 for (; rel < relend; rel++)
11692 {
04c9666a 11693 enum elf_ppc64_reloc_type r_type;
4cc603a5 11694 bfd_vma addend, orig_addend;
5bd4f169
AM
11695 bfd_reloc_status_type r;
11696 Elf_Internal_Sym *sym;
11697 asection *sec;
039b3fef
AM
11698 struct elf_link_hash_entry *h_elf;
11699 struct ppc_link_hash_entry *h;
11700 struct ppc_link_hash_entry *fdh;
5bd4f169 11701 const char *sym_name;
0d4792f7 11702 unsigned long r_symndx, toc_symndx;
3a71aa26 11703 bfd_vma toc_addend;
f961d9dd
AM
11704 unsigned char tls_mask, tls_gd, tls_type;
11705 unsigned char sym_type;
5bd4f169 11706 bfd_vma relocation;
b34976b6
AM
11707 bfd_boolean unresolved_reloc;
11708 bfd_boolean warned;
67f0cbdb 11709 unsigned int insn;
e11840f9 11710 unsigned int mask;
721956f4
AM
11711 struct ppc_stub_hash_entry *stub_entry;
11712 bfd_vma max_br_offset;
11713 bfd_vma from;
5bd4f169 11714
4ce794b7 11715 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 11716 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM
11717
11718 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11719 symbol of the previous ADDR64 reloc. The symbol gives us the
11720 proper TOC base to use. */
11721 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11722 && rel != relocs
11723 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11724 && is_opd)
11725 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11726
4ce794b7
AM
11727 sym = NULL;
11728 sec = NULL;
039b3fef 11729 h_elf = NULL;
4ce794b7 11730 sym_name = NULL;
b34976b6
AM
11731 unresolved_reloc = FALSE;
11732 warned = FALSE;
4cc603a5 11733 orig_addend = rel->r_addend;
65f38f15 11734
0b13192e 11735 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM
11736 {
11737 /* It's a local symbol. */
74f0fb50 11738 struct _opd_sec_data *opd;
4025353c 11739
5bd4f169
AM
11740 sym = local_syms + r_symndx;
11741 sec = local_sections[r_symndx];
26c61ae5 11742 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 11743 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 11744 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM
11745 opd = get_opd_info (sec);
11746 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 11747 {
74f0fb50 11748 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM
11749 if (adjust == -1)
11750 relocation = 0;
11751 else
4cc603a5
AM
11752 {
11753 /* If this is a relocation against the opd section sym
11754 and we have edited .opd, adjust the reloc addend so
11755 that ld -r and ld --emit-relocs output is correct.
11756 If it is a reloc against some other .opd symbol,
11757 then the symbol value will be adjusted later. */
11758 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11759 rel->r_addend += adjust;
11760 else
11761 relocation += adjust;
11762 }
1e2f5b6e 11763 }
5bd4f169
AM
11764 }
11765 else
11766 {
b2a8e766
AM
11767 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11768 r_symndx, symtab_hdr, sym_hashes,
039b3fef 11769 h_elf, sec, relocation,
b2a8e766 11770 unresolved_reloc, warned);
039b3fef
AM
11771 sym_name = h_elf->root.root.string;
11772 sym_type = h_elf->type;
5bd4f169 11773 }
039b3fef 11774 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 11775
ab96bf03 11776 if (sec != NULL && elf_discarded_section (sec))
e4067dbb
DJ
11777 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
11778 rel, relend,
11779 ppc64_elf_howto_table[r_type],
11780 contents);
ab96bf03
AM
11781
11782 if (info->relocatable)
11783 continue;
11784
951fd09b
AM
11785 /* TLS optimizations. Replace instruction sequences and relocs
11786 based on information we collected in tls_optimize. We edit
11787 RELOCS so that --emit-relocs will output something sensible
11788 for the final instruction stream. */
11789 tls_mask = 0;
11790 tls_gd = 0;
0d4792f7 11791 toc_symndx = 0;
727fc41e
AM
11792 if (h != NULL)
11793 tls_mask = h->tls_mask;
11794 else if (local_got_ents != NULL)
411e1bfb 11795 {
e054468f
AM
11796 struct plt_entry **local_plt = (struct plt_entry **)
11797 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 11798 unsigned char *lgot_masks = (unsigned char *)
e054468f 11799 (local_plt + symtab_hdr->sh_info);
727fc41e
AM
11800 tls_mask = lgot_masks[r_symndx];
11801 }
11802 if (tls_mask == 0
11803 && (r_type == R_PPC64_TLS
11804 || r_type == R_PPC64_TLSGD
11805 || r_type == R_PPC64_TLSLD))
11806 {
11807 /* Check for toc tls entries. */
f961d9dd 11808 unsigned char *toc_tls;
0d4792f7 11809
727fc41e
AM
11810 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11811 &local_syms, rel, input_bfd))
11812 return FALSE;
0d4792f7 11813
727fc41e
AM
11814 if (toc_tls)
11815 tls_mask = *toc_tls;
0d4792f7
AM
11816 }
11817
11818 /* Check that tls relocs are used with tls syms, and non-tls
11819 relocs are used with non-tls syms. */
cf35638d 11820 if (r_symndx != STN_UNDEF
0d4792f7
AM
11821 && r_type != R_PPC64_NONE
11822 && (h == NULL
039b3fef
AM
11823 || h->elf.root.type == bfd_link_hash_defined
11824 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM
11825 && (IS_PPC64_TLS_RELOC (r_type)
11826 != (sym_type == STT_TLS
11827 || (sym_type == STT_SECTION
11828 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 11829 {
727fc41e
AM
11830 if (tls_mask != 0
11831 && (r_type == R_PPC64_TLS
11832 || r_type == R_PPC64_TLSGD
11833 || r_type == R_PPC64_TLSLD))
0d4792f7
AM
11834 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11835 ;
11836 else
25f53a85 11837 info->callbacks->einfo
1d483afe 11838 (!IS_PPC64_TLS_RELOC (r_type)
25f53a85
AM
11839 ? _("%H: %s used with TLS symbol %s\n")
11840 : _("%H: %s used with non-TLS symbol %s\n"),
11841 input_bfd, input_section, rel->r_offset,
0d4792f7
AM
11842 ppc64_elf_howto_table[r_type]->name,
11843 sym_name);
411e1bfb
AM
11844 }
11845
11846 /* Ensure reloc mapping code below stays sane. */
11847 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11848 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11849 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11850 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11851 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11852 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11853 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11854 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11855 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11856 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11857 abort ();
0d4792f7 11858
411e1bfb
AM
11859 switch (r_type)
11860 {
11861 default:
411e1bfb
AM
11862 break;
11863
ba761f19
AM
11864 case R_PPC64_LO_DS_OPT:
11865 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11866 if ((insn & (0x3f << 26)) != 58u << 26)
11867 abort ();
11868 insn += (14u << 26) - (58u << 26);
11869 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11870 r_type = R_PPC64_TOC16_LO;
11871 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11872 break;
11873
411e1bfb
AM
11874 case R_PPC64_TOC16:
11875 case R_PPC64_TOC16_LO:
11876 case R_PPC64_TOC16_DS:
11877 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM
11878 {
11879 /* Check for toc tls entries. */
f961d9dd 11880 unsigned char *toc_tls;
951fd09b 11881 int retval;
411e1bfb 11882
3a71aa26
AM
11883 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11884 &local_syms, rel, input_bfd);
951fd09b 11885 if (retval == 0)
411e1bfb
AM
11886 return FALSE;
11887
11888 if (toc_tls)
11889 {
951fd09b 11890 tls_mask = *toc_tls;
411e1bfb
AM
11891 if (r_type == R_PPC64_TOC16_DS
11892 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM
11893 {
11894 if (tls_mask != 0
11895 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11896 goto toctprel;
11897 }
411e1bfb 11898 else
951fd09b
AM
11899 {
11900 /* If we found a GD reloc pair, then we might be
11901 doing a GD->IE transition. */
11902 if (retval == 2)
11903 {
11904 tls_gd = TLS_TPRELGD;
11905 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 11906 goto tls_ldgd_opt;
951fd09b
AM
11907 }
11908 else if (retval == 3)
11909 {
11910 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 11911 goto tls_ldgd_opt;
951fd09b
AM
11912 }
11913 }
411e1bfb
AM
11914 }
11915 }
11916 break;
11917
9d6ded02
AM
11918 case R_PPC64_GOT_TPREL16_HI:
11919 case R_PPC64_GOT_TPREL16_HA:
11920 if (tls_mask != 0
11921 && (tls_mask & TLS_TPREL) == 0)
11922 {
11923 rel->r_offset -= d_offset;
11924 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11925 r_type = R_PPC64_NONE;
11926 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11927 }
11928 break;
11929
411e1bfb
AM
11930 case R_PPC64_GOT_TPREL16_DS:
11931 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM
11932 if (tls_mask != 0
11933 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 11934 {
81407a69 11935 toctprel:
4fe5ca5b 11936 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM
11937 insn &= 31 << 21;
11938 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 11939 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 11940 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM
11941 if (toc_symndx != 0)
11942 {
11943 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 11944 rel->r_addend = toc_addend;
0d4792f7
AM
11945 /* We changed the symbol. Start over in order to
11946 get h, sym, sec etc. right. */
11947 rel--;
11948 continue;
11949 }
11950 else
11951 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
11952 }
11953 break;
11954
11955 case R_PPC64_TLS:
951fd09b
AM
11956 if (tls_mask != 0
11957 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 11958 {
411e1bfb 11959 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
11960 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11961 if (insn == 0)
411e1bfb 11962 abort ();
411e1bfb 11963 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 11964 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM
11965 PPC64_TPREL16_LO which is at low-order half-word. */
11966 rel->r_offset += d_offset;
0d4792f7
AM
11967 r_type = R_PPC64_TPREL16_LO;
11968 if (toc_symndx != 0)
11969 {
11970 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 11971 rel->r_addend = toc_addend;
0d4792f7
AM
11972 /* We changed the symbol. Start over in order to
11973 get h, sym, sec etc. right. */
11974 rel--;
11975 continue;
11976 }
11977 else
11978 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
11979 }
11980 break;
11981
411e1bfb
AM
11982 case R_PPC64_GOT_TLSGD16_HI:
11983 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM
11984 tls_gd = TLS_TPRELGD;
11985 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11986 goto tls_gdld_hi;
11987 break;
11988
411e1bfb
AM
11989 case R_PPC64_GOT_TLSLD16_HI:
11990 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 11991 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 11992 {
951fd09b
AM
11993 tls_gdld_hi:
11994 if ((tls_mask & tls_gd) != 0)
11995 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11996 + R_PPC64_GOT_TPREL16_DS);
11997 else
411e1bfb 11998 {
4fe5ca5b 11999 rel->r_offset -= d_offset;
727ac201 12000 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 12001 r_type = R_PPC64_NONE;
411e1bfb 12002 }
951fd09b 12003 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
12004 }
12005 break;
12006
951fd09b
AM
12007 case R_PPC64_GOT_TLSGD16:
12008 case R_PPC64_GOT_TLSGD16_LO:
12009 tls_gd = TLS_TPRELGD;
12010 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 12011 goto tls_ldgd_opt;
951fd09b 12012 break;
411e1bfb 12013
951fd09b
AM
12014 case R_PPC64_GOT_TLSLD16:
12015 case R_PPC64_GOT_TLSLD16_LO:
12016 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12017 {
3a71aa26 12018 unsigned int insn1, insn2, insn3;
102890f0
AM
12019 bfd_vma offset;
12020
12021 tls_ldgd_opt:
727fc41e
AM
12022 offset = (bfd_vma) -1;
12023 /* If not using the newer R_PPC64_TLSGD/LD to mark
12024 __tls_get_addr calls, we must trust that the call
12025 stays with its arg setup insns, ie. that the next
12026 reloc is the __tls_get_addr call associated with
12027 the current reloc. Edit both insns. */
12028 if (input_section->has_tls_get_addr_call
12029 && rel + 1 < relend
12030 && branch_reloc_hash_match (input_bfd, rel + 1,
12031 htab->tls_get_addr,
12032 htab->tls_get_addr_fd))
12033 offset = rel[1].r_offset;
102890f0 12034 if ((tls_mask & tls_gd) != 0)
411e1bfb 12035 {
102890f0 12036 /* IE */
3a71aa26
AM
12037 insn1 = bfd_get_32 (output_bfd,
12038 contents + rel->r_offset - d_offset);
102890f0
AM
12039 insn1 &= (1 << 26) - (1 << 2);
12040 insn1 |= 58 << 26; /* ld */
12041 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 12042 if (offset != (bfd_vma) -1)
f58d5a2d 12043 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM
12044 if ((tls_mask & TLS_EXPLICIT) == 0)
12045 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12046 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 12047 else
102890f0
AM
12048 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12049 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12050 }
12051 else
12052 {
12053 /* LE */
12054 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12055 insn2 = 0x38630000; /* addi 3,3,0 */
12056 if (tls_gd == 0)
951fd09b 12057 {
102890f0 12058 /* Was an LD reloc. */
1d483afe
AM
12059 if (toc_symndx)
12060 sec = local_sections[toc_symndx];
12061 for (r_symndx = 0;
12062 r_symndx < symtab_hdr->sh_info;
12063 r_symndx++)
12064 if (local_sections[r_symndx] == sec)
12065 break;
12066 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 12067 r_symndx = STN_UNDEF;
102890f0 12068 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 12069 if (r_symndx != STN_UNDEF)
1d483afe
AM
12070 rel->r_addend -= (local_syms[r_symndx].st_value
12071 + sec->output_offset
12072 + sec->output_section->vma);
951fd09b 12073 }
102890f0 12074 else if (toc_symndx != 0)
3a71aa26
AM
12075 {
12076 r_symndx = toc_symndx;
12077 rel->r_addend = toc_addend;
12078 }
102890f0
AM
12079 r_type = R_PPC64_TPREL16_HA;
12080 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM
12081 if (offset != (bfd_vma) -1)
12082 {
12083 rel[1].r_info = ELF64_R_INFO (r_symndx,
12084 R_PPC64_TPREL16_LO);
12085 rel[1].r_offset = offset + d_offset;
12086 rel[1].r_addend = rel->r_addend;
12087 }
102890f0 12088 }
3a71aa26
AM
12089 bfd_put_32 (output_bfd, insn1,
12090 contents + rel->r_offset - d_offset);
727fc41e
AM
12091 if (offset != (bfd_vma) -1)
12092 {
12093 insn3 = bfd_get_32 (output_bfd,
12094 contents + offset + 4);
12095 if (insn3 == NOP
12096 || insn3 == CROR_151515 || insn3 == CROR_313131)
12097 {
12098 rel[1].r_offset += 4;
12099 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12100 insn2 = NOP;
12101 }
12102 bfd_put_32 (output_bfd, insn2, contents + offset);
12103 }
12104 if ((tls_mask & tls_gd) == 0
12105 && (tls_gd == 0 || toc_symndx != 0))
12106 {
12107 /* We changed the symbol. Start over in order
12108 to get h, sym, sec etc. right. */
12109 rel--;
12110 continue;
12111 }
12112 }
12113 break;
12114
12115 case R_PPC64_TLSGD:
12116 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12117 {
12118 unsigned int insn2, insn3;
12119 bfd_vma offset = rel->r_offset;
12120
12121 if ((tls_mask & TLS_TPRELGD) != 0)
12122 {
12123 /* IE */
12124 r_type = R_PPC64_NONE;
12125 insn2 = 0x7c636a14; /* add 3,3,13 */
12126 }
12127 else
12128 {
12129 /* LE */
12130 if (toc_symndx != 0)
12131 {
12132 r_symndx = toc_symndx;
12133 rel->r_addend = toc_addend;
12134 }
12135 r_type = R_PPC64_TPREL16_LO;
12136 rel->r_offset = offset + d_offset;
12137 insn2 = 0x38630000; /* addi 3,3,0 */
12138 }
12139 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12140 /* Zap the reloc on the _tls_get_addr call too. */
12141 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 12142 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM
12143 insn3 = bfd_get_32 (output_bfd,
12144 contents + offset + 4);
102890f0
AM
12145 if (insn3 == NOP
12146 || insn3 == CROR_151515 || insn3 == CROR_313131)
12147 {
727fc41e 12148 rel->r_offset += 4;
3a71aa26
AM
12149 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12150 insn2 = NOP;
102890f0 12151 }
102890f0 12152 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 12153 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 12154 {
102890f0
AM
12155 rel--;
12156 continue;
411e1bfb 12157 }
411e1bfb 12158 }
411e1bfb
AM
12159 break;
12160
727fc41e
AM
12161 case R_PPC64_TLSLD:
12162 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12163 {
12164 unsigned int insn2, insn3;
12165 bfd_vma offset = rel->r_offset;
12166
12167 if (toc_symndx)
12168 sec = local_sections[toc_symndx];
12169 for (r_symndx = 0;
12170 r_symndx < symtab_hdr->sh_info;
12171 r_symndx++)
12172 if (local_sections[r_symndx] == sec)
12173 break;
12174 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 12175 r_symndx = STN_UNDEF;
727fc41e 12176 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 12177 if (r_symndx != STN_UNDEF)
727fc41e
AM
12178 rel->r_addend -= (local_syms[r_symndx].st_value
12179 + sec->output_offset
12180 + sec->output_section->vma);
12181
12182 r_type = R_PPC64_TPREL16_LO;
12183 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12184 rel->r_offset = offset + d_offset;
12185 /* Zap the reloc on the _tls_get_addr call too. */
12186 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 12187 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM
12188 insn2 = 0x38630000; /* addi 3,3,0 */
12189 insn3 = bfd_get_32 (output_bfd,
12190 contents + offset + 4);
12191 if (insn3 == NOP
12192 || insn3 == CROR_151515 || insn3 == CROR_313131)
12193 {
12194 rel->r_offset += 4;
12195 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12196 insn2 = NOP;
12197 }
12198 bfd_put_32 (output_bfd, insn2, contents + offset);
12199 rel--;
12200 continue;
12201 }
12202 break;
12203
411e1bfb 12204 case R_PPC64_DTPMOD64:
951fd09b
AM
12205 if (rel + 1 < relend
12206 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12207 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 12208 {
951fd09b
AM
12209 if ((tls_mask & TLS_GD) == 0)
12210 {
12211 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12212 if ((tls_mask & TLS_TPRELGD) != 0)
12213 r_type = R_PPC64_TPREL64;
12214 else
12215 {
4ce794b7 12216 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM
12217 r_type = R_PPC64_NONE;
12218 }
12219 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12220 }
12221 }
12222 else
12223 {
12224 if ((tls_mask & TLS_LD) == 0)
411e1bfb 12225 {
4ce794b7 12226 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 12227 r_type = R_PPC64_NONE;
951fd09b 12228 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 12229 }
411e1bfb
AM
12230 }
12231 break;
12232
12233 case R_PPC64_TPREL64:
951fd09b 12234 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM
12235 {
12236 r_type = R_PPC64_NONE;
12237 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12238 }
12239 break;
12240 }
12241
12242 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 12243 insn = 0;
b25116a9
AM
12244 max_br_offset = 1 << 25;
12245 addend = rel->r_addend;
65f38f15 12246 switch (r_type)
5bd4f169
AM
12247 {
12248 default:
65f38f15 12249 break;
5bd4f169 12250
65f38f15
AM
12251 /* Branch taken prediction relocations. */
12252 case R_PPC64_ADDR14_BRTAKEN:
12253 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH
12254 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12255 /* Fall thru. */
65f38f15 12256
86c76c7b 12257 /* Branch not taken prediction relocations. */
65f38f15
AM
12258 case R_PPC64_ADDR14_BRNTAKEN:
12259 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM
12260 insn |= bfd_get_32 (output_bfd,
12261 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 12262 /* Fall thru. */
86c76c7b 12263
b25116a9
AM
12264 case R_PPC64_REL14:
12265 max_br_offset = 1 << 15;
12266 /* Fall thru. */
5bd4f169 12267
65f38f15 12268 case R_PPC64_REL24:
ad8e1ba5
AM
12269 /* Calls to functions with a different TOC, such as calls to
12270 shared objects, need to alter the TOC pointer. This is
12271 done using a linkage stub. A REL24 branching to these
12272 linkage stubs needs to be followed by a nop, as the nop
12273 will be replaced with an instruction to restore the TOC
12274 base pointer. */
8387904d 12275 fdh = h;
b31867b6
AM
12276 if (h != NULL
12277 && h->oh != NULL
12278 && h->oh->is_func_descriptor)
12279 fdh = ppc_follow_link (h->oh);
6abec6bc
AM
12280 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12281 if (stub_entry != NULL
ad8e1ba5
AM
12282 && (stub_entry->stub_type == ppc_stub_plt_call
12283 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12284 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 12285 {
b25116a9 12286 bfd_boolean can_plt_call = FALSE;
721956f4 12287
eea6121a 12288 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 12289 {
b25116a9
AM
12290 unsigned long nop;
12291 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12292 if (nop == NOP
12293 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 12294 {
a7f2871e
AM
12295 if (h != NULL
12296 && (h == htab->tls_get_addr_fd
12297 || h == htab->tls_get_addr)
12298 && !htab->no_tls_get_addr_opt)
12299 {
12300 /* Special stub used, leave nop alone. */
12301 }
12302 else
12303 bfd_put_32 (input_bfd, LD_R2_40R1,
12304 contents + rel->r_offset + 4);
b25116a9 12305 can_plt_call = TRUE;
41bd81ab 12306 }
5bd4f169 12307 }
721956f4
AM
12308
12309 if (!can_plt_call)
12310 {
ad8e1ba5
AM
12311 if (stub_entry->stub_type == ppc_stub_plt_call)
12312 {
12313 /* If this is a plain branch rather than a branch
4fa1c237
AM
12314 and link, don't require a nop. However, don't
12315 allow tail calls in a shared library as they
12316 will result in r2 being corrupted. */
b25116a9
AM
12317 unsigned long br;
12318 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 12319 if (info->executable && (br & 1) == 0)
b25116a9 12320 can_plt_call = TRUE;
15b552e9
AM
12321 else
12322 stub_entry = NULL;
ad8e1ba5 12323 }
6ab189d5 12324 else if (h != NULL
039b3fef 12325 && strcmp (h->elf.root.root.string,
6ab189d5
AM
12326 ".__libc_start_main") == 0)
12327 {
12328 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 12329 can_plt_call = TRUE;
6ab189d5 12330 }
ad8e1ba5
AM
12331 else
12332 {
12333 if (strcmp (input_section->output_section->name,
12334 ".init") == 0
12335 || strcmp (input_section->output_section->name,
12336 ".fini") == 0)
25f53a85
AM
12337 info->callbacks->einfo
12338 (_("%H: automatic multiple TOCs "
ad8e1ba5 12339 "not supported using your crt files; "
25f53a85
AM
12340 "recompile with -mminimal-toc or upgrade gcc\n"),
12341 input_bfd, input_section, rel->r_offset);
ad8e1ba5 12342 else
25f53a85
AM
12343 info->callbacks->einfo
12344 (_("%H: sibling call optimization to `%s' "
ad8e1ba5
AM
12345 "does not allow automatic multiple TOCs; "
12346 "recompile with -mminimal-toc or "
12347 "-fno-optimize-sibling-calls, "
25f53a85
AM
12348 "or make `%s' extern\n"),
12349 input_bfd, input_section, rel->r_offset,
ad8e1ba5
AM
12350 sym_name,
12351 sym_name);
12352 bfd_set_error (bfd_error_bad_value);
12353 ret = FALSE;
12354 }
721956f4
AM
12355 }
12356
b25116a9
AM
12357 if (can_plt_call
12358 && stub_entry->stub_type == ppc_stub_plt_call)
12359 unresolved_reloc = FALSE;
12360 }
12361
6abec6bc
AM
12362 if ((stub_entry == NULL
12363 || stub_entry->stub_type == ppc_stub_long_branch
12364 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM
12365 && get_opd_info (sec) != NULL)
12366 {
12367 /* The branch destination is the value of the opd entry. */
4cc603a5
AM
12368 bfd_vma off = (relocation + addend
12369 - sec->output_section->vma
12370 - sec->output_offset);
8387904d
AM
12371 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12372 if (dest != (bfd_vma) -1)
12373 {
12374 relocation = dest;
12375 addend = 0;
12376 }
12377 }
12378
b25116a9
AM
12379 /* If the branch is out of reach we ought to have a long
12380 branch stub. */
12381 from = (rel->r_offset
12382 + input_section->output_offset
12383 + input_section->output_section->vma);
12384
6abec6bc
AM
12385 if (stub_entry != NULL
12386 && (stub_entry->stub_type == ppc_stub_long_branch
12387 || stub_entry->stub_type == ppc_stub_plt_branch)
12388 && (r_type == R_PPC64_ADDR14_BRTAKEN
12389 || r_type == R_PPC64_ADDR14_BRNTAKEN
12390 || (relocation + addend - from + max_br_offset
12391 < 2 * max_br_offset)))
12392 /* Don't use the stub if this branch is in range. */
12393 stub_entry = NULL;
b25116a9
AM
12394
12395 if (stub_entry != NULL)
12396 {
12397 /* Munge up the value and addend so that we call the stub
12398 rather than the procedure directly. */
12399 relocation = (stub_entry->stub_offset
12400 + stub_entry->stub_sec->output_offset
12401 + stub_entry->stub_sec->output_section->vma);
12402 addend = 0;
12403 }
12404
12405 if (insn != 0)
12406 {
12407 if (is_power4)
721956f4 12408 {
b25116a9
AM
12409 /* Set 'a' bit. This is 0b00010 in BO field for branch
12410 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12411 for branch on CTR insns (BO == 1a00t or 1a01t). */
12412 if ((insn & (0x14 << 21)) == (0x04 << 21))
12413 insn |= 0x02 << 21;
12414 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12415 insn |= 0x08 << 21;
12416 else
12417 break;
12418 }
12419 else
12420 {
12421 /* Invert 'y' bit if not the default. */
4cc603a5 12422 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 12423 insn ^= 0x01 << 21;
721956f4 12424 }
b25116a9
AM
12425
12426 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 12427 }
e86ce104 12428
06da1e8e
AM
12429 /* NOP out calls to undefined weak functions.
12430 We can thus call a weak function without first
12431 checking whether the function is defined. */
b25116a9 12432 else if (h != NULL
039b3fef 12433 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 12434 && h->elf.dynindx == -1
b25116a9
AM
12435 && r_type == R_PPC64_REL24
12436 && relocation == 0
4cc603a5 12437 && addend == 0)
e86ce104 12438 {
06da1e8e
AM
12439 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12440 continue;
e86ce104 12441 }
65f38f15
AM
12442 break;
12443 }
5bd4f169 12444
65f38f15 12445 /* Set `addend'. */
411e1bfb 12446 tls_type = 0;
65f38f15
AM
12447 switch (r_type)
12448 {
12449 default:
25f53a85
AM
12450 info->callbacks->einfo
12451 (_("%B: unknown relocation type %d for symbol %s\n"),
d003868e 12452 input_bfd, (int) r_type, sym_name);
5bd4f169 12453
65f38f15 12454 bfd_set_error (bfd_error_bad_value);
b34976b6 12455 ret = FALSE;
65f38f15 12456 continue;
5bd4f169 12457
65f38f15 12458 case R_PPC64_NONE:
411e1bfb 12459 case R_PPC64_TLS:
727fc41e
AM
12460 case R_PPC64_TLSGD:
12461 case R_PPC64_TLSLD:
04c9666a
AM
12462 case R_PPC64_GNU_VTINHERIT:
12463 case R_PPC64_GNU_VTENTRY:
65f38f15 12464 continue;
5bd4f169
AM
12465
12466 /* GOT16 relocations. Like an ADDR16 using the symbol's
12467 address in the GOT as relocation value instead of the
411e1bfb 12468 symbol's value itself. Also, create a GOT entry for the
5bd4f169 12469 symbol and put the symbol value there. */
411e1bfb
AM
12470 case R_PPC64_GOT_TLSGD16:
12471 case R_PPC64_GOT_TLSGD16_LO:
12472 case R_PPC64_GOT_TLSGD16_HI:
12473 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 12474 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
12475 goto dogot;
12476
12477 case R_PPC64_GOT_TLSLD16:
12478 case R_PPC64_GOT_TLSLD16_LO:
12479 case R_PPC64_GOT_TLSLD16_HI:
12480 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 12481 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
12482 goto dogot;
12483
12484 case R_PPC64_GOT_TPREL16_DS:
12485 case R_PPC64_GOT_TPREL16_LO_DS:
12486 case R_PPC64_GOT_TPREL16_HI:
12487 case R_PPC64_GOT_TPREL16_HA:
12488 tls_type = TLS_TLS | TLS_TPREL;
12489 goto dogot;
12490
12491 case R_PPC64_GOT_DTPREL16_DS:
12492 case R_PPC64_GOT_DTPREL16_LO_DS:
12493 case R_PPC64_GOT_DTPREL16_HI:
12494 case R_PPC64_GOT_DTPREL16_HA:
12495 tls_type = TLS_TLS | TLS_DTPREL;
12496 goto dogot;
12497
65f38f15
AM
12498 case R_PPC64_GOT16:
12499 case R_PPC64_GOT16_LO:
12500 case R_PPC64_GOT16_HI:
12501 case R_PPC64_GOT16_HA:
12502 case R_PPC64_GOT16_DS:
12503 case R_PPC64_GOT16_LO_DS:
411e1bfb 12504 dogot:
5bd4f169
AM
12505 {
12506 /* Relocation is to the entry for this symbol in the global
12507 offset table. */
e717da7e 12508 asection *got;
d881513a 12509 bfd_vma *offp;
5bd4f169 12510 bfd_vma off;
d881513a 12511 unsigned long indx = 0;
927be08e 12512 struct got_entry *ent;
65f38f15 12513
d881513a
AM
12514 if (tls_type == (TLS_TLS | TLS_LD)
12515 && (h == NULL
f5385ebf 12516 || !h->elf.def_dynamic))
927be08e 12517 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 12518 else
5bd4f169 12519 {
5bd4f169 12520
d881513a
AM
12521 if (h != NULL)
12522 {
12523 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM
12524 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12525 &h->elf)
d881513a 12526 || (info->shared
726d3ab0 12527 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
d881513a
AM
12528 /* This is actually a static link, or it is a
12529 -Bsymbolic link and the symbol is defined
12530 locally, or the symbol was forced to be local
12531 because of a version file. */
12532 ;
12533 else
12534 {
039b3fef 12535 indx = h->elf.dynindx;
d881513a
AM
12536 unresolved_reloc = FALSE;
12537 }
039b3fef 12538 ent = h->elf.got.glist;
d881513a 12539 }
411e1bfb 12540 else
5bd4f169 12541 {
d881513a
AM
12542 if (local_got_ents == NULL)
12543 abort ();
12544 ent = local_got_ents[r_symndx];
5bd4f169 12545 }
d881513a
AM
12546
12547 for (; ent != NULL; ent = ent->next)
4cc603a5 12548 if (ent->addend == orig_addend
e717da7e 12549 && ent->owner == input_bfd
d881513a
AM
12550 && ent->tls_type == tls_type)
12551 break;
5bd4f169 12552 }
411e1bfb 12553
927be08e
AM
12554 if (ent == NULL)
12555 abort ();
12556 if (ent->is_indirect)
12557 ent = ent->got.ent;
12558 offp = &ent->got.offset;
12559 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM
12560 if (got == NULL)
12561 abort ();
12562
411e1bfb
AM
12563 /* The offset must always be a multiple of 8. We use the
12564 least significant bit to record whether we have already
12565 processed this entry. */
d881513a 12566 off = *offp;
411e1bfb
AM
12567 if ((off & 1) != 0)
12568 off &= ~1;
5bd4f169
AM
12569 else
12570 {
411e1bfb
AM
12571 /* Generate relocs for the dynamic linker, except in
12572 the case of TLSLD where we'll use one entry per
12573 module. */
25f23106
AM
12574 asection *relgot;
12575 bfd_boolean ifunc;
e717da7e 12576
d881513a 12577 *offp = off | 1;
25f23106
AM
12578 relgot = NULL;
12579 ifunc = (h != NULL
12580 ? h->elf.type == STT_GNU_IFUNC
12581 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
4e795f50 12582 if ((info->shared || indx != 0)
927be08e
AM
12583 && (h == NULL
12584 || (tls_type == (TLS_TLS | TLS_LD)
12585 && !h->elf.def_dynamic)
039b3fef
AM
12586 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12587 || h->elf.root.type != bfd_link_hash_undefweak))
927be08e 12588 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106
AM
12589 else if (ifunc)
12590 relgot = htab->reliplt;
12591 if (relgot != NULL)
5bd4f169 12592 {
e717da7e
AM
12593 outrel.r_offset = (got->output_section->vma
12594 + got->output_offset
411e1bfb 12595 + off);
4cc603a5 12596 outrel.r_addend = addend;
d881513a 12597 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 12598 {
411e1bfb 12599 outrel.r_addend = 0;
e515b051 12600 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM
12601 if (tls_type == (TLS_TLS | TLS_GD))
12602 {
e717da7e
AM
12603 loc = relgot->contents;
12604 loc += (relgot->reloc_count++
d881513a
AM
12605 * sizeof (Elf64_External_Rela));
12606 bfd_elf64_swap_reloca_out (output_bfd,
12607 &outrel, loc);
e515b051 12608 outrel.r_offset += 8;
4cc603a5 12609 outrel.r_addend = addend;
d881513a
AM
12610 outrel.r_info
12611 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 12612 }
411e1bfb 12613 }
951fd09b 12614 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 12615 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 12616 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 12617 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM
12618 else if (indx != 0)
12619 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12620 else
81407a69 12621 {
25f23106
AM
12622 if (ifunc)
12623 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12624 else
12625 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM
12626
12627 /* Write the .got section contents for the sake
12628 of prelink. */
e717da7e 12629 loc = got->contents + off;
23fbd6fa
JJ
12630 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12631 loc);
81407a69 12632 }
81407a69
AM
12633
12634 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM
12635 {
12636 outrel.r_addend += relocation;
12637 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 12638 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 12639 }
e717da7e
AM
12640 loc = relgot->contents;
12641 loc += (relgot->reloc_count++
411e1bfb
AM
12642 * sizeof (Elf64_External_Rela));
12643 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12644 }
12645
ad8e1ba5 12646 /* Init the .got section contents here if we're not
81407a69 12647 emitting a reloc. */
d881513a 12648 else
411e1bfb 12649 {
4cc603a5 12650 relocation += addend;
7b609f53
AM
12651 if (tls_type == (TLS_TLS | TLS_LD))
12652 relocation = 1;
12653 else if (tls_type != 0)
411e1bfb 12654 {
e1918d23 12655 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 12656 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 12657 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 12658
7b609f53
AM
12659 if (tls_type == (TLS_TLS | TLS_GD))
12660 {
12661 bfd_put_64 (output_bfd, relocation,
e717da7e 12662 got->contents + off + 8);
7b609f53
AM
12663 relocation = 1;
12664 }
411e1bfb 12665 }
7b609f53 12666
411e1bfb 12667 bfd_put_64 (output_bfd, relocation,
e717da7e 12668 got->contents + off);
5bd4f169
AM
12669 }
12670 }
12671
65f38f15
AM
12672 if (off >= (bfd_vma) -2)
12673 abort ();
12674
bf102f86
AM
12675 relocation = got->output_section->vma + got->output_offset + off;
12676 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 12677 }
65f38f15
AM
12678 break;
12679
12680 case R_PPC64_PLT16_HA:
12681 case R_PPC64_PLT16_HI:
12682 case R_PPC64_PLT16_LO:
12683 case R_PPC64_PLT32:
12684 case R_PPC64_PLT64:
12685 /* Relocation is to the entry for this symbol in the
12686 procedure linkage table. */
12687
12688 /* Resolve a PLT reloc against a local symbol directly,
12689 without using the procedure linkage table. */
12690 if (h == NULL)
12691 break;
12692
411e1bfb
AM
12693 /* It's possible that we didn't make a PLT entry for this
12694 symbol. This happens when statically linking PIC code,
12695 or when using -Bsymbolic. Go find a match if there is a
12696 PLT entry. */
4ce794b7 12697 if (htab->plt != NULL)
65f38f15 12698 {
411e1bfb 12699 struct plt_entry *ent;
039b3fef 12700 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 12701 if (ent->addend == orig_addend
411e1bfb
AM
12702 && ent->plt.offset != (bfd_vma) -1)
12703 {
4ce794b7
AM
12704 relocation = (htab->plt->output_section->vma
12705 + htab->plt->output_offset
411e1bfb
AM
12706 + ent->plt.offset);
12707 unresolved_reloc = FALSE;
12708 }
65f38f15 12709 }
65f38f15 12710 break;
5bd4f169 12711
0b13192e
AM
12712 case R_PPC64_TOC:
12713 /* Relocation value is TOC base. */
12714 relocation = TOCstart;
cf35638d 12715 if (r_symndx == STN_UNDEF)
0b13192e 12716 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM
12717 else if (unresolved_reloc)
12718 ;
12719 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM
12720 relocation += htab->stub_group[sec->id].toc_off;
12721 else
12722 unresolved_reloc = TRUE;
ab96bf03 12723 goto dodyn;
0b13192e 12724
5bd4f169
AM
12725 /* TOC16 relocs. We want the offset relative to the TOC base,
12726 which is the address of the start of the TOC plus 0x8000.
12727 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12728 in this order. */
65f38f15
AM
12729 case R_PPC64_TOC16:
12730 case R_PPC64_TOC16_LO:
12731 case R_PPC64_TOC16_HI:
12732 case R_PPC64_TOC16_DS:
12733 case R_PPC64_TOC16_LO_DS:
12734 case R_PPC64_TOC16_HA:
ad8e1ba5 12735 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM
12736 break;
12737
12738 /* Relocate against the beginning of the section. */
65f38f15
AM
12739 case R_PPC64_SECTOFF:
12740 case R_PPC64_SECTOFF_LO:
12741 case R_PPC64_SECTOFF_HI:
12742 case R_PPC64_SECTOFF_DS:
12743 case R_PPC64_SECTOFF_LO_DS:
12744 case R_PPC64_SECTOFF_HA:
4ce794b7 12745 if (sec != NULL)
65f38f15 12746 addend -= sec->output_section->vma;
5bd4f169
AM
12747 break;
12748
25f23106
AM
12749 case R_PPC64_REL16:
12750 case R_PPC64_REL16_LO:
12751 case R_PPC64_REL16_HI:
12752 case R_PPC64_REL16_HA:
12753 break;
12754
721956f4
AM
12755 case R_PPC64_REL14:
12756 case R_PPC64_REL14_BRNTAKEN:
12757 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM
12758 case R_PPC64_REL24:
12759 break;
12760
411e1bfb
AM
12761 case R_PPC64_TPREL16:
12762 case R_PPC64_TPREL16_LO:
12763 case R_PPC64_TPREL16_HI:
12764 case R_PPC64_TPREL16_HA:
12765 case R_PPC64_TPREL16_DS:
12766 case R_PPC64_TPREL16_LO_DS:
12767 case R_PPC64_TPREL16_HIGHER:
12768 case R_PPC64_TPREL16_HIGHERA:
12769 case R_PPC64_TPREL16_HIGHEST:
12770 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM
12771 if (h != NULL
12772 && h->elf.root.type == bfd_link_hash_undefweak
12773 && h->elf.dynindx == -1)
12774 {
12775 /* Make this relocation against an undefined weak symbol
12776 resolve to zero. This is really just a tweak, since
12777 code using weak externs ought to check that they are
12778 defined before using them. */
12779 bfd_byte *p = contents + rel->r_offset - d_offset;
12780
12781 insn = bfd_get_32 (output_bfd, p);
12782 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12783 if (insn != 0)
12784 bfd_put_32 (output_bfd, insn, p);
12785 break;
12786 }
e1918d23 12787 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
12788 if (info->shared)
12789 /* The TPREL16 relocs shouldn't really be used in shared
12790 libs as they will result in DT_TEXTREL being set, but
12791 support them anyway. */
12792 goto dodyn;
12793 break;
12794
12795 case R_PPC64_DTPREL16:
12796 case R_PPC64_DTPREL16_LO:
12797 case R_PPC64_DTPREL16_HI:
12798 case R_PPC64_DTPREL16_HA:
12799 case R_PPC64_DTPREL16_DS:
12800 case R_PPC64_DTPREL16_LO_DS:
12801 case R_PPC64_DTPREL16_HIGHER:
12802 case R_PPC64_DTPREL16_HIGHERA:
12803 case R_PPC64_DTPREL16_HIGHEST:
12804 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 12805 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
12806 break;
12807
e515b051
AM
12808 case R_PPC64_DTPMOD64:
12809 relocation = 1;
12810 addend = 0;
12811 goto dodyn;
12812
411e1bfb 12813 case R_PPC64_TPREL64:
e1918d23 12814 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
12815 goto dodyn;
12816
12817 case R_PPC64_DTPREL64:
e1918d23 12818 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
12819 /* Fall thru */
12820
65f38f15
AM
12821 /* Relocations that may need to be propagated if this is a
12822 dynamic object. */
04c9666a 12823 case R_PPC64_REL30:
65f38f15
AM
12824 case R_PPC64_REL32:
12825 case R_PPC64_REL64:
12826 case R_PPC64_ADDR14:
12827 case R_PPC64_ADDR14_BRNTAKEN:
12828 case R_PPC64_ADDR14_BRTAKEN:
12829 case R_PPC64_ADDR16:
12830 case R_PPC64_ADDR16_DS:
12831 case R_PPC64_ADDR16_HA:
12832 case R_PPC64_ADDR16_HI:
12833 case R_PPC64_ADDR16_HIGHER:
12834 case R_PPC64_ADDR16_HIGHERA:
12835 case R_PPC64_ADDR16_HIGHEST:
12836 case R_PPC64_ADDR16_HIGHESTA:
12837 case R_PPC64_ADDR16_LO:
12838 case R_PPC64_ADDR16_LO_DS:
12839 case R_PPC64_ADDR24:
65f38f15
AM
12840 case R_PPC64_ADDR32:
12841 case R_PPC64_ADDR64:
12842 case R_PPC64_UADDR16:
12843 case R_PPC64_UADDR32:
12844 case R_PPC64_UADDR64:
411e1bfb 12845 dodyn:
5d1634d7 12846 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
12847 break;
12848
41bd81ab
AM
12849 if (NO_OPD_RELOCS && is_opd)
12850 break;
12851
65f38f15 12852 if ((info->shared
4e795f50 12853 && (h == NULL
039b3fef
AM
12854 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12855 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 12856 && (must_be_dyn_reloc (info, r_type)
039b3fef 12857 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM
12858 || (ELIMINATE_COPY_RELOCS
12859 && !info->shared
65f38f15 12860 && h != NULL
039b3fef 12861 && h->elf.dynindx != -1
f5385ebf 12862 && !h->elf.non_got_ref
25f23106
AM
12863 && !h->elf.def_regular)
12864 || (!info->shared
12865 && (h != NULL
12866 ? h->elf.type == STT_GNU_IFUNC
12867 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 12868 {
b34976b6 12869 bfd_boolean skip, relocate;
65f38f15 12870 asection *sreloc;
1cf1f670 12871 bfd_vma out_off;
65f38f15
AM
12872
12873 /* When generating a dynamic object, these relocations
12874 are copied into the output file to be resolved at run
12875 time. */
12876
b34976b6
AM
12877 skip = FALSE;
12878 relocate = FALSE;
65f38f15 12879
1cf1f670
AM
12880 out_off = _bfd_elf_section_offset (output_bfd, info,
12881 input_section, rel->r_offset);
12882 if (out_off == (bfd_vma) -1)
b34976b6 12883 skip = TRUE;
1cf1f670 12884 else if (out_off == (bfd_vma) -2)
b34976b6 12885 skip = TRUE, relocate = TRUE;
1cf1f670
AM
12886 out_off += (input_section->output_section->vma
12887 + input_section->output_offset);
12888 outrel.r_offset = out_off;
411e1bfb 12889 outrel.r_addend = rel->r_addend;
65f38f15 12890
1cf1f670
AM
12891 /* Optimize unaligned reloc use. */
12892 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12893 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12894 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12895 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12896 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12897 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12898 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12899 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12900 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12901
65f38f15 12902 if (skip)
0bb2d96a 12903 memset (&outrel, 0, sizeof outrel);
726d3ab0 12904 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
0b13192e
AM
12905 && !is_opd
12906 && r_type != R_PPC64_TOC)
039b3fef 12907 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM
12908 else
12909 {
41bd81ab
AM
12910 /* This symbol is local, or marked to become local,
12911 or this is an opd section reloc which must point
12912 at a local function. */
65f38f15 12913 outrel.r_addend += relocation;
e86ce104 12914 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 12915 {
3fad3c7c 12916 if (is_opd && h != NULL)
afbe61cf
AM
12917 {
12918 /* Lie about opd entries. This case occurs
12919 when building shared libraries and we
12920 reference a function in another shared
3fad3c7c
AM
12921 lib. The same thing happens for a weak
12922 definition in an application that's
12923 overridden by a strong definition in a
12924 shared lib. (I believe this is a generic
12925 bug in binutils handling of weak syms.)
12926 In these cases we won't use the opd
1e2f5b6e 12927 entry in this lib. */
b34976b6 12928 unresolved_reloc = FALSE;
afbe61cf 12929 }
25f23106
AM
12930 if (!is_opd
12931 && r_type == R_PPC64_ADDR64
12932 && (h != NULL
12933 ? h->elf.type == STT_GNU_IFUNC
12934 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12935 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12936 else
12937 {
12938 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 12939
25f23106
AM
12940 /* We need to relocate .opd contents for ld.so.
12941 Prelink also wants simple and consistent rules
12942 for relocs. This make all RELATIVE relocs have
12943 *r_offset equal to r_addend. */
12944 relocate = TRUE;
12945 }
65f38f15
AM
12946 }
12947 else
12948 {
12949 long indx = 0;
12950
25f23106
AM
12951 if (h != NULL
12952 ? h->elf.type == STT_GNU_IFUNC
12953 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12954 {
25f53a85
AM
12955 info->callbacks->einfo
12956 (_("%H: relocation %s for indirect "
12957 "function %s unsupported\n"),
12958 input_bfd, input_section, rel->r_offset,
25f23106
AM
12959 ppc64_elf_howto_table[r_type]->name,
12960 sym_name);
12961 ret = FALSE;
12962 }
cf35638d 12963 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM
12964 ;
12965 else if (sec == NULL || sec->owner == NULL)
12966 {
12967 bfd_set_error (bfd_error_bad_value);
b34976b6 12968 return FALSE;
65f38f15
AM
12969 }
12970 else
12971 {
12972 asection *osec;
12973
12974 osec = sec->output_section;
12975 indx = elf_section_data (osec)->dynindx;
12976
74541ad4
AM
12977 if (indx == 0)
12978 {
12979 if ((osec->flags & SEC_READONLY) == 0
12980 && htab->elf.data_index_section != NULL)
12981 osec = htab->elf.data_index_section;
12982 else
12983 osec = htab->elf.text_index_section;
12984 indx = elf_section_data (osec)->dynindx;
12985 }
12986 BFD_ASSERT (indx != 0);
12987
65f38f15
AM
12988 /* We are turning this relocation into one
12989 against a section symbol, so subtract out
12990 the output section's address but not the
12991 offset of the input section in the output
12992 section. */
12993 outrel.r_addend -= osec->vma;
12994 }
12995
12996 outrel.r_info = ELF64_R_INFO (indx, r_type);
12997 }
12998 }
12999
13000 sreloc = elf_section_data (input_section)->sreloc;
25f23106
AM
13001 if (!htab->elf.dynamic_sections_created)
13002 sreloc = htab->reliplt;
65f38f15
AM
13003 if (sreloc == NULL)
13004 abort ();
13005
dfbb6ac9
AM
13006 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13007 >= sreloc->size)
13008 abort ();
947216bf
AM
13009 loc = sreloc->contents;
13010 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM
13011 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13012
13013 /* If this reloc is against an external symbol, it will
13014 be computed at runtime, so there's no need to do
81407a69
AM
13015 anything now. However, for the sake of prelink ensure
13016 that the section contents are a known value. */
65f38f15 13017 if (! relocate)
81407a69
AM
13018 {
13019 unresolved_reloc = FALSE;
13020 /* The value chosen here is quite arbitrary as ld.so
13021 ignores section contents except for the special
13022 case of .opd where the contents might be accessed
13023 before relocation. Choose zero, as that won't
13024 cause reloc overflow. */
13025 relocation = 0;
13026 addend = 0;
13027 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13028 to improve backward compatibility with older
13029 versions of ld. */
13030 if (r_type == R_PPC64_ADDR64)
13031 addend = outrel.r_addend;
13032 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 13033 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM
13034 addend = (input_section->output_section->vma
13035 + input_section->output_offset
13036 + rel->r_offset);
81407a69 13037 }
65f38f15 13038 }
5bd4f169
AM
13039 break;
13040
65f38f15
AM
13041 case R_PPC64_COPY:
13042 case R_PPC64_GLOB_DAT:
13043 case R_PPC64_JMP_SLOT:
25f23106 13044 case R_PPC64_JMP_IREL:
65f38f15
AM
13045 case R_PPC64_RELATIVE:
13046 /* We shouldn't ever see these dynamic relocs in relocatable
13047 files. */
ae9a127f 13048 /* Fall through. */
65f38f15
AM
13049
13050 case R_PPC64_PLTGOT16:
13051 case R_PPC64_PLTGOT16_DS:
13052 case R_PPC64_PLTGOT16_HA:
13053 case R_PPC64_PLTGOT16_HI:
13054 case R_PPC64_PLTGOT16_LO:
13055 case R_PPC64_PLTGOT16_LO_DS:
13056 case R_PPC64_PLTREL32:
13057 case R_PPC64_PLTREL64:
13058 /* These ones haven't been implemented yet. */
13059
25f53a85
AM
13060 info->callbacks->einfo
13061 (_("%B: relocation %s is not supported for symbol %s\n"),
d003868e 13062 input_bfd,
4ce794b7 13063 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM
13064
13065 bfd_set_error (bfd_error_invalid_operation);
b34976b6 13066 ret = FALSE;
5bd4f169 13067 continue;
65f38f15 13068 }
5bd4f169 13069
67f0cbdb
AM
13070 /* Multi-instruction sequences that access the TOC can be
13071 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13072 to nop; addi rb,r2,x; */
13073 switch (r_type)
13074 {
13075 default:
13076 break;
13077
13078 case R_PPC64_GOT_TLSLD16_HI:
13079 case R_PPC64_GOT_TLSGD16_HI:
13080 case R_PPC64_GOT_TPREL16_HI:
13081 case R_PPC64_GOT_DTPREL16_HI:
13082 case R_PPC64_GOT16_HI:
13083 case R_PPC64_TOC16_HI:
13084 /* These relocs would only be useful if building up an
13085 offset to later add to r2, perhaps in an indexed
13086 addressing mode instruction. Don't try to optimize.
13087 Unfortunately, the possibility of someone building up an
13088 offset like this or even with the HA relocs, means that
13089 we need to check the high insn when optimizing the low
13090 insn. */
13091 break;
13092
13093 case R_PPC64_GOT_TLSLD16_HA:
13094 case R_PPC64_GOT_TLSGD16_HA:
13095 case R_PPC64_GOT_TPREL16_HA:
13096 case R_PPC64_GOT_DTPREL16_HA:
13097 case R_PPC64_GOT16_HA:
13098 case R_PPC64_TOC16_HA:
d983b7a0 13099 /* nop is done later. */
67f0cbdb
AM
13100 break;
13101
13102 case R_PPC64_GOT_TLSLD16_LO:
13103 case R_PPC64_GOT_TLSGD16_LO:
13104 case R_PPC64_GOT_TPREL16_LO_DS:
13105 case R_PPC64_GOT_DTPREL16_LO_DS:
13106 case R_PPC64_GOT16_LO:
13107 case R_PPC64_GOT16_LO_DS:
13108 case R_PPC64_TOC16_LO:
13109 case R_PPC64_TOC16_LO_DS:
13110 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000)
13111 {
13112 bfd_byte *p = contents + (rel->r_offset & ~3);
13113 insn = bfd_get_32 (input_bfd, p);
13114 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
13115 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
13116 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
13117 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
13118 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
13119 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
13120 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
13121 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
13122 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
13123 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
13124 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
13125 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
13126 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
13127 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
13128 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13129 && (insn & 3) != 1)
13130 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
13131 && ((insn & 3) == 0 || (insn & 3) == 3)))
13132 {
13133 unsigned int reg = (insn >> 16) & 0x1f;
d983b7a0
AM
13134 const Elf_Internal_Rela *ha;
13135 bfd_boolean match_addend;
13136
13137 match_addend = (sym != NULL
13138 && ELF_ST_TYPE (sym->st_info) == STT_SECTION);
13139 ha = ha_reloc_match (relocs, rel, &reg, match_addend,
13140 input_bfd, contents);
13141 if (ha != NULL)
67f0cbdb
AM
13142 {
13143 insn &= ~(0x1f << 16);
d983b7a0 13144 insn |= reg << 16;
67f0cbdb 13145 bfd_put_32 (input_bfd, insn, p);
d983b7a0
AM
13146 if (ha_opt == NULL)
13147 {
13148 ha_opt = bfd_zmalloc (input_section->reloc_count);
13149 if (ha_opt == NULL)
13150 return FALSE;
13151 }
13152 ha_opt[ha - relocs] = 1;
67f0cbdb 13153 }
d983b7a0
AM
13154 else
13155 /* If we don't find a matching high part insn,
13156 something is fishy. Refuse to nop any high
13157 part insn in this section. */
13158 no_ha_opt = TRUE;
67f0cbdb
AM
13159 }
13160 }
13161 break;
13162 }
13163
65f38f15
AM
13164 /* Do any further special processing. */
13165 switch (r_type)
13166 {
13167 default:
13168 break;
13169
13170 case R_PPC64_ADDR16_HA:
25f23106 13171 case R_PPC64_REL16_HA:
65f38f15
AM
13172 case R_PPC64_ADDR16_HIGHERA:
13173 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM
13174 case R_PPC64_TOC16_HA:
13175 case R_PPC64_SECTOFF_HA:
411e1bfb
AM
13176 case R_PPC64_TPREL16_HA:
13177 case R_PPC64_DTPREL16_HA:
411e1bfb
AM
13178 case R_PPC64_TPREL16_HIGHER:
13179 case R_PPC64_TPREL16_HIGHERA:
13180 case R_PPC64_TPREL16_HIGHEST:
13181 case R_PPC64_TPREL16_HIGHESTA:
13182 case R_PPC64_DTPREL16_HIGHER:
13183 case R_PPC64_DTPREL16_HIGHERA:
13184 case R_PPC64_DTPREL16_HIGHEST:
13185 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM
13186 /* It's just possible that this symbol is a weak symbol
13187 that's not actually defined anywhere. In that case,
13188 'sec' would be NULL, and we should leave the symbol
13189 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
13190 if (sec == NULL)
13191 break;
13192 /* Fall thru */
13193
13194 case R_PPC64_GOT16_HA:
13195 case R_PPC64_PLTGOT16_HA:
13196 case R_PPC64_PLT16_HA:
13197 case R_PPC64_GOT_TLSGD16_HA:
13198 case R_PPC64_GOT_TLSLD16_HA:
13199 case R_PPC64_GOT_TPREL16_HA:
13200 case R_PPC64_GOT_DTPREL16_HA:
13201 /* Add 0x10000 if sign bit in 0:15 is set.
13202 Bits 0:15 are not used. */
13203 addend += 0x8000;
65f38f15
AM
13204 break;
13205
13206 case R_PPC64_ADDR16_DS:
13207 case R_PPC64_ADDR16_LO_DS:
13208 case R_PPC64_GOT16_DS:
13209 case R_PPC64_GOT16_LO_DS:
13210 case R_PPC64_PLT16_LO_DS:
13211 case R_PPC64_SECTOFF_DS:
13212 case R_PPC64_SECTOFF_LO_DS:
13213 case R_PPC64_TOC16_DS:
13214 case R_PPC64_TOC16_LO_DS:
13215 case R_PPC64_PLTGOT16_DS:
13216 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM
13217 case R_PPC64_GOT_TPREL16_DS:
13218 case R_PPC64_GOT_TPREL16_LO_DS:
13219 case R_PPC64_GOT_DTPREL16_DS:
13220 case R_PPC64_GOT_DTPREL16_LO_DS:
13221 case R_PPC64_TPREL16_DS:
13222 case R_PPC64_TPREL16_LO_DS:
13223 case R_PPC64_DTPREL16_DS:
13224 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM
13225 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13226 mask = 3;
13227 /* If this reloc is against an lq insn, then the value must be
13228 a multiple of 16. This is somewhat of a hack, but the
13229 "correct" way to do this by defining _DQ forms of all the
13230 _DS relocs bloats all reloc switches in this file. It
13231 doesn't seem to make much sense to use any of these relocs
13232 in data, so testing the insn should be safe. */
494dac0c 13233 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM
13234 mask = 15;
13235 if (((relocation + addend) & mask) != 0)
65f38f15 13236 {
25f53a85
AM
13237 info->callbacks->einfo
13238 (_("%H: error: %s not a multiple of %u\n"),
13239 input_bfd, input_section, rel->r_offset,
4ce794b7 13240 ppc64_elf_howto_table[r_type]->name,
adadcc0c 13241 mask + 1);
65f38f15 13242 bfd_set_error (bfd_error_bad_value);
b34976b6 13243 ret = FALSE;
65f38f15
AM
13244 continue;
13245 }
13246 break;
5bd4f169
AM
13247 }
13248
239e1f3a
AM
13249 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13250 because such sections are not SEC_ALLOC and thus ld.so will
13251 not process them. */
65f38f15 13252 if (unresolved_reloc
239e1f3a 13253 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 13254 && h->elf.def_dynamic))
9c07fe7c 13255 {
25f53a85
AM
13256 info->callbacks->einfo
13257 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
13258 input_bfd, input_section, rel->r_offset,
7b609f53 13259 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 13260 h->elf.root.root.string);
b34976b6 13261 ret = FALSE;
9c07fe7c 13262 }
5bd4f169 13263
65f38f15 13264 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM
13265 input_bfd,
13266 input_section,
13267 contents,
411e1bfb 13268 rel->r_offset,
5bd4f169
AM
13269 relocation,
13270 addend);
13271
ef60b7ff 13272 if (r != bfd_reloc_ok)
5bd4f169 13273 {
cd27b276
AM
13274 if (sym_name == NULL)
13275 sym_name = "(null)";
13276 if (r == bfd_reloc_overflow)
5bd4f169 13277 {
cd27b276
AM
13278 if (warned)
13279 continue;
13280 if (h != NULL
039b3fef 13281 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 13282 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM
13283 {
13284 /* Assume this is a call protected by other code that
13285 detects the symbol is undefined. If this is the case,
13286 we can safely ignore the overflow. If not, the
13287 program is hosed anyway, and a little warning isn't
13288 going to help. */
13289
13290 continue;
13291 }
13292
ef60b7ff 13293 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
13294 (info, (h ? &h->elf.root : NULL), sym_name,
13295 ppc64_elf_howto_table[r_type]->name,
4cc603a5 13296 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 13297 return FALSE;
ef60b7ff
AM
13298 }
13299 else
13300 {
25f53a85
AM
13301 info->callbacks->einfo
13302 (_("%H: %s reloc against `%s': error %d\n"),
13303 input_bfd, input_section, rel->r_offset,
4ce794b7 13304 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM
13305 sym_name,
13306 (int) r);
b34976b6 13307 ret = FALSE;
ef60b7ff 13308 }
5bd4f169 13309 }
5bd4f169
AM
13310 }
13311
d983b7a0
AM
13312 if (ha_opt != NULL)
13313 {
13314 if (!no_ha_opt)
13315 {
13316 unsigned char *opt = ha_opt;
13317 rel = relocs;
13318 relend = relocs + input_section->reloc_count;
13319 for (; rel < relend; opt++, rel++)
13320 if (*opt != 0)
13321 {
13322 bfd_byte *p = contents + (rel->r_offset & ~3);
13323 bfd_put_32 (input_bfd, NOP, p);
13324 }
13325 }
13326 free (ha_opt);
13327 }
13328
645ea6a9
AM
13329 /* If we're emitting relocations, then shortly after this function
13330 returns, reloc offsets and addends for this section will be
13331 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM
13332 file rather than the input. Save a copy of the relocs for
13333 opd_entry_value. */
4cc603a5 13334 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM
13335 {
13336 bfd_size_type amt;
13337 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13338 rel = bfd_alloc (input_bfd, amt);
13339 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13340 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13341 if (rel == NULL)
13342 return FALSE;
13343 memcpy (rel, relocs, amt);
13344 }
5bd4f169
AM
13345 return ret;
13346}
13347
754021d0
AM
13348/* Adjust the value of any local symbols in opd sections. */
13349
6e0b88f1 13350static int
754021d0
AM
13351ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13352 const char *name ATTRIBUTE_UNUSED,
13353 Elf_Internal_Sym *elfsym,
13354 asection *input_sec,
13355 struct elf_link_hash_entry *h)
13356{
74f0fb50
AM
13357 struct _opd_sec_data *opd;
13358 long adjust;
754021d0
AM
13359 bfd_vma value;
13360
4025353c 13361 if (h != NULL)
6e0b88f1 13362 return 1;
4025353c 13363
74f0fb50
AM
13364 opd = get_opd_info (input_sec);
13365 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 13366 return 1;
754021d0
AM
13367
13368 value = elfsym->st_value - input_sec->output_offset;
13369 if (!info->relocatable)
13370 value -= input_sec->output_section->vma;
13371
74f0fb50 13372 adjust = opd->adjust[value / 8];
4025353c 13373 if (adjust == -1)
6e0b88f1
AM
13374 return 2;
13375
13376 elfsym->st_value += adjust;
13377 return 1;
754021d0
AM
13378}
13379
5bd4f169
AM
13380/* Finish up dynamic symbol handling. We set the contents of various
13381 dynamic sections here. */
13382
b34976b6 13383static bfd_boolean
4ce794b7
AM
13384ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13385 struct bfd_link_info *info,
13386 struct elf_link_hash_entry *h,
13387 Elf_Internal_Sym *sym)
5bd4f169 13388{
65f38f15 13389 struct ppc_link_hash_table *htab;
8387904d
AM
13390 struct plt_entry *ent;
13391 Elf_Internal_Rela rela;
13392 bfd_byte *loc;
5bd4f169 13393
65f38f15 13394 htab = ppc_hash_table (info);
4dfe6ac6
NC
13395 if (htab == NULL)
13396 return FALSE;
5bd4f169 13397
8387904d
AM
13398 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13399 if (ent->plt.offset != (bfd_vma) -1)
13400 {
13401 /* This symbol has an entry in the procedure linkage
13402 table. Set it up. */
e054468f
AM
13403 if (!htab->elf.dynamic_sections_created
13404 || h->dynindx == -1)
13405 {
13406 BFD_ASSERT (h->type == STT_GNU_IFUNC
13407 && h->def_regular
13408 && (h->root.type == bfd_link_hash_defined
13409 || h->root.type == bfd_link_hash_defweak));
25f23106
AM
13410 rela.r_offset = (htab->iplt->output_section->vma
13411 + htab->iplt->output_offset
13412 + ent->plt.offset);
13413 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
e054468f
AM
13414 rela.r_addend = (h->root.u.def.value
13415 + h->root.u.def.section->output_offset
13416 + h->root.u.def.section->output_section->vma
13417 + ent->addend);
25f23106
AM
13418 loc = (htab->reliplt->contents
13419 + (htab->reliplt->reloc_count++
13420 * sizeof (Elf64_External_Rela)));
e054468f
AM
13421 }
13422 else
13423 {
25f23106
AM
13424 rela.r_offset = (htab->plt->output_section->vma
13425 + htab->plt->output_offset
13426 + ent->plt.offset);
e054468f
AM
13427 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13428 rela.r_addend = ent->addend;
25f23106
AM
13429 loc = (htab->relplt->contents
13430 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13431 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
e054468f 13432 }
8387904d
AM
13433 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13434 }
5bd4f169 13435
f5385ebf 13436 if (h->needs_copy)
5bd4f169 13437 {
65f38f15 13438 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 13439
65f38f15
AM
13440 if (h->dynindx == -1
13441 || (h->root.type != bfd_link_hash_defined
13442 && h->root.type != bfd_link_hash_defweak)
4ce794b7 13443 || htab->relbss == NULL)
65f38f15 13444 abort ();
5bd4f169
AM
13445
13446 rela.r_offset = (h->root.u.def.value
13447 + h->root.u.def.section->output_section->vma
13448 + h->root.u.def.section->output_offset);
13449 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13450 rela.r_addend = 0;
4ce794b7
AM
13451 loc = htab->relbss->contents;
13452 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 13453 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM
13454 }
13455
5bd4f169
AM
13456 /* Mark some specially defined symbols as absolute. */
13457 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13458 sym->st_shndx = SHN_ABS;
13459
b34976b6 13460 return TRUE;
5bd4f169
AM
13461}
13462
65f38f15
AM
13463/* Used to decide how to sort relocs in an optimal manner for the
13464 dynamic linker, before writing them out. */
13465
13466static enum elf_reloc_type_class
4ce794b7 13467ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 13468{
04c9666a 13469 enum elf_ppc64_reloc_type r_type;
a33d1f77 13470
4ce794b7 13471 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 13472 switch (r_type)
65f38f15
AM
13473 {
13474 case R_PPC64_RELATIVE:
13475 return reloc_class_relative;
13476 case R_PPC64_JMP_SLOT:
13477 return reloc_class_plt;
13478 case R_PPC64_COPY:
13479 return reloc_class_copy;
13480 default:
13481 return reloc_class_normal;
13482 }
13483}
13484
5bd4f169
AM
13485/* Finish up the dynamic sections. */
13486
b34976b6 13487static bfd_boolean
4ce794b7
AM
13488ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13489 struct bfd_link_info *info)
5bd4f169 13490{
65f38f15
AM
13491 struct ppc_link_hash_table *htab;
13492 bfd *dynobj;
5bd4f169 13493 asection *sdyn;
5bd4f169 13494
65f38f15 13495 htab = ppc_hash_table (info);
4dfe6ac6
NC
13496 if (htab == NULL)
13497 return FALSE;
13498
65f38f15 13499 dynobj = htab->elf.dynobj;
5bd4f169
AM
13500 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13501
65f38f15 13502 if (htab->elf.dynamic_sections_created)
5bd4f169 13503 {
5bd4f169
AM
13504 Elf64_External_Dyn *dyncon, *dynconend;
13505
4ce794b7 13506 if (sdyn == NULL || htab->got == NULL)
65f38f15 13507 abort ();
5bd4f169
AM
13508
13509 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 13510 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM
13511 for (; dyncon < dynconend; dyncon++)
13512 {
13513 Elf_Internal_Dyn dyn;
19397422 13514 asection *s;
5bd4f169
AM
13515
13516 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13517
13518 switch (dyn.d_tag)
13519 {
65f38f15
AM
13520 default:
13521 continue;
5bd4f169 13522
5d1634d7 13523 case DT_PPC64_GLINK:
4ce794b7 13524 s = htab->glink;
6348e046 13525 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM
13526 /* We stupidly defined DT_PPC64_GLINK to be the start
13527 of glink rather than the first entry point, which is
13528 what ld.so needs, and now have a bigger stub to
13529 support automatic multiple TOCs. */
13530 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM
13531 break;
13532
19397422
AM
13533 case DT_PPC64_OPD:
13534 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
13535 if (s == NULL)
13536 continue;
13537 dyn.d_un.d_ptr = s->vma;
19397422
AM
13538 break;
13539
13540 case DT_PPC64_OPDSZ:
13541 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
13542 if (s == NULL)
13543 continue;
eea6121a 13544 dyn.d_un.d_val = s->size;
19397422
AM
13545 break;
13546
65f38f15 13547 case DT_PLTGOT:
4ce794b7 13548 s = htab->plt;
6348e046 13549 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM
13550 break;
13551
13552 case DT_JMPREL:
4ce794b7 13553 s = htab->relplt;
6348e046 13554 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 13555 break;
5bd4f169 13556
65f38f15 13557 case DT_PLTRELSZ:
eea6121a 13558 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM
13559 break;
13560
13561 case DT_RELASZ:
13562 /* Don't count procedure linkage table relocs in the
13563 overall reloc count. */
4ce794b7 13564 s = htab->relplt;
6348e046
AM
13565 if (s == NULL)
13566 continue;
eea6121a 13567 dyn.d_un.d_val -= s->size;
6348e046
AM
13568 break;
13569
13570 case DT_RELA:
13571 /* We may not be using the standard ELF linker script.
13572 If .rela.plt is the first .rela section, we adjust
13573 DT_RELA to not include it. */
4ce794b7 13574 s = htab->relplt;
6348e046
AM
13575 if (s == NULL)
13576 continue;
13577 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
13578 continue;
eea6121a 13579 dyn.d_un.d_ptr += s->size;
65f38f15 13580 break;
5bd4f169 13581 }
5bd4f169 13582
65f38f15 13583 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 13584 }
5bd4f169
AM
13585 }
13586
eea6121a 13587 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM
13588 {
13589 /* Fill in the first entry in the global offset table.
13590 We use it to hold the link-time TOCbase. */
13591 bfd_put_64 (output_bfd,
60ee0d4a 13592 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 13593 htab->got->contents);
5d1634d7
AM
13594
13595 /* Set .got entry size. */
4ce794b7 13596 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM
13597 }
13598
eea6121a 13599 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM
13600 {
13601 /* Set .plt entry size. */
4ce794b7 13602 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM
13603 = PLT_ENTRY_SIZE;
13604 }
13605
84f5d08e
AM
13606 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13607 brlt ourselves if emitrelocations. */
13608 if (htab->brlt != NULL
13609 && htab->brlt->reloc_count != 0
13610 && !_bfd_elf_link_output_relocs (output_bfd,
13611 htab->brlt,
d4730f92 13612 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM
13613 elf_section_data (htab->brlt)->relocs,
13614 NULL))
13615 return FALSE;
13616
176a0d42
AM
13617 if (htab->glink != NULL
13618 && htab->glink->reloc_count != 0
13619 && !_bfd_elf_link_output_relocs (output_bfd,
13620 htab->glink,
d4730f92 13621 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM
13622 elf_section_data (htab->glink)->relocs,
13623 NULL))
13624 return FALSE;
13625
e717da7e 13626 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM
13627 since we didn't add them to DYNOBJ. We know dynobj is the first
13628 bfd. */
e717da7e
AM
13629 while ((dynobj = dynobj->link_next) != NULL)
13630 {
13631 asection *s;
7b53ace3 13632
0c8d6e5c 13633 if (!is_ppc64_elf (dynobj))
7b53ace3
AM
13634 continue;
13635
e717da7e
AM
13636 s = ppc64_elf_tdata (dynobj)->got;
13637 if (s != NULL
eea6121a 13638 && s->size != 0
e717da7e
AM
13639 && s->output_section != bfd_abs_section_ptr
13640 && !bfd_set_section_contents (output_bfd, s->output_section,
13641 s->contents, s->output_offset,
eea6121a 13642 s->size))
e717da7e
AM
13643 return FALSE;
13644 s = ppc64_elf_tdata (dynobj)->relgot;
13645 if (s != NULL
eea6121a 13646 && s->size != 0
e717da7e
AM
13647 && s->output_section != bfd_abs_section_ptr
13648 && !bfd_set_section_contents (output_bfd, s->output_section,
13649 s->contents, s->output_offset,
eea6121a 13650 s->size))
e717da7e
AM
13651 return FALSE;
13652 }
f6c52c13 13653
b34976b6 13654 return TRUE;
5bd4f169
AM
13655}
13656
5bd4f169 13657#include "elf64-target.h"
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