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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
84f5d08e 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
cd123cb7 24
4ce794b7
AM		 25/* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
5bd4f169 31#include "bfd.h"
5bd4f169
AM		 32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
04c9666a 35#include "elf/ppc64.h"
5d1634d7 36#include "elf64-ppc.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 56static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 58
ad8e1ba5
AM		 59#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60#define TARGET_LITTLE_NAME "elf64-powerpcle"
61#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
64#define ELF_MACHINE_CODE EM_PPC64
65#define ELF_MAXPAGESIZE 0x10000
24718e3b 66#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM		 67#define elf_info_to_howto ppc64_elf_info_to_howto
68
69#define elf_backend_want_got_sym 0
70#define elf_backend_want_plt_sym 0
71#define elf_backend_plt_alignment 3
72#define elf_backend_plt_not_loaded 1
ad8e1ba5 73#define elf_backend_got_header_size 8
ad8e1ba5
AM		 74#define elf_backend_can_gc_sections 1
75#define elf_backend_can_refcount 1
76#define elf_backend_rela_normal 1
6bfdb61b 77#define elf_backend_default_execstack 0
ad8e1ba5 78
e717da7e 79#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 80#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
157090f7 81#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM		 82#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 86#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 87
88#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 89#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 91#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 92#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 94#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d 95#define elf_backend_check_directives ppc64_elf_check_directives
97fed1c9 96#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 97#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 98#define elf_backend_check_relocs ppc64_elf_check_relocs
64d03ab5 99#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 100#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
101#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
102#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
103#define elf_backend_hide_symbol ppc64_elf_hide_symbol
104#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
105#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 106#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 107#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 108#define elf_backend_relocate_section ppc64_elf_relocate_section
109#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
110#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
111#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 112#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 113#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 114
5bd4f169
AM		 115/* The name of the dynamic interpreter. This is put in the .interp
116 section. */
117#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
118
119/* The size in bytes of an entry in the procedure linkage table. */
120#define PLT_ENTRY_SIZE 24
121
122/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 123#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 124
125/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 126#define TOC_BASE_OFF 0x8000
127
128/* Offset of tp and dtp pointers from start of TLS block. */
129#define TP_OFFSET 0x7000
130#define DTP_OFFSET 0x8000
5bd4f169 131
ad8e1ba5
AM		 132/* .plt call stub instructions. The normal stub is like this, but
133 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 134 insert an addi to adjust r12. */
ad8e1ba5 135#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 136#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
137#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
138#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 139#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 140#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
AM		 141 /* ld %r11,xxx+16@l(%r12) */
142#define BCTR 0x4e800420 /* bctr */
143
5d1634d7 144
ee4bf8d2 145#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 146#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
ad8e1ba5
AM		 147#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
148#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
149
ac2df442
AM		 150#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
151#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
152
ad8e1ba5
AM		 153#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
154
ee4bf8d2 155/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 156#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 157 /* 0: */
158 /* .quad plt0-1f */
159 /* __glink: */
160#define MFLR_R12 0x7d8802a6 /* mflr %12 */
161#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
162 /* 1: */
163#define MFLR_R11 0x7d6802a6 /* mflr %11 */
164#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
165#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
166#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
167 /* ld %11,0(%12) */
168 /* ld %2,8(%12) */
169 /* mtctr %11 */
170 /* ld %11,16(%12) */
171 /* bctr */
5d1634d7
AM		 172
173/* Pad with this. */
174#define NOP 0x60000000
175
721956f4
AM		 176/* Some other nops. */
177#define CROR_151515 0x4def7b82
178#define CROR_313131 0x4ffffb82
179
cedb70c5 180/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 181#define LI_R0_0 0x38000000 /* li %r0,0 */
182#define B_DOT 0x48000000 /* b . */
183
184/* After that, we need two instructions to load the index, followed by
185 a branch. */
186#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 187#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 188
deb0e272
AM		 189/* Instructions used by the save and restore reg functions. */
190#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
191#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
192#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
193#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 194#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
195#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 196#define LI_R12_0 0x39800000 /* li %r12,0 */
197#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
198#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
199#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 200#define BLR 0x4e800020 /* blr */
201
41bd81ab
AM		 202/* Since .opd is an array of descriptors and each entry will end up
203 with identical R_PPC64_RELATIVE relocs, there is really no need to
204 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 205 relocate .opd without reloc entries. */
41bd81ab
AM		 206#ifndef NO_OPD_RELOCS
207#define NO_OPD_RELOCS 0
208#endif
5bd4f169 209\f
f5e87a1d 210#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 211
5bd4f169 212/* Relocation HOWTO's. */
04c9666a 213static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 214
215static reloc_howto_type ppc64_elf_howto_raw[] = {
216 /* This reloc does nothing. */
217 HOWTO (R_PPC64_NONE, /* type */
218 0, /* rightshift */
411e1bfb
AM		 219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 32, /* bitsize */
b34976b6 221 FALSE, /* pc_relative */
5bd4f169 222 0, /* bitpos */
f5e87a1d 223 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC64_NONE", /* name */
b34976b6 226 FALSE, /* partial_inplace */
d006db6c 227 0, /* src_mask */
5bd4f169 228 0, /* dst_mask */
b34976b6 229 FALSE), /* pcrel_offset */
5bd4f169
AM		 230
231 /* A standard 32 bit relocation. */
232 HOWTO (R_PPC64_ADDR32, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 32, /* bitsize */
b34976b6 236 FALSE, /* pc_relative */
5bd4f169
AM		 237 0, /* bitpos */
238 complain_overflow_bitfield, /* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC64_ADDR32", /* name */
b34976b6 241 FALSE, /* partial_inplace */
5bd4f169
AM		 242 0, /* src_mask */
243 0xffffffff, /* dst_mask */
b34976b6 244 FALSE), /* pcrel_offset */
5bd4f169
AM		 245
246 /* An absolute 26 bit branch; the lower two bits must be zero.
247 FIXME: we don't check that, we just clear them. */
248 HOWTO (R_PPC64_ADDR24, /* type */
249 0, /* rightshift */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
251 26, /* bitsize */
b34976b6 252 FALSE, /* pc_relative */
5bd4f169
AM		 253 0, /* bitpos */
254 complain_overflow_bitfield, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC64_ADDR24", /* name */
b34976b6 257 FALSE, /* partial_inplace */
d006db6c 258 0, /* src_mask */
f5e87a1d 259 0x03fffffc, /* dst_mask */
b34976b6 260 FALSE), /* pcrel_offset */
5bd4f169
AM		 261
262 /* A standard 16 bit relocation. */
263 HOWTO (R_PPC64_ADDR16, /* type */
264 0, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
5bd4f169
AM		 268 0, /* bitpos */
269 complain_overflow_bitfield, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC64_ADDR16", /* name */
b34976b6 272 FALSE, /* partial_inplace */
5bd4f169
AM		 273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
5bd4f169
AM		 276
277 /* A 16 bit relocation without overflow. */
278 HOWTO (R_PPC64_ADDR16_LO, /* type */
279 0, /* rightshift */
280 1, /* size (0 = byte, 1 = short, 2 = long) */
281 16, /* bitsize */
b34976b6 282 FALSE, /* pc_relative */
5bd4f169
AM		 283 0, /* bitpos */
284 complain_overflow_dont,/* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_PPC64_ADDR16_LO", /* name */
b34976b6 287 FALSE, /* partial_inplace */
5bd4f169
AM		 288 0, /* src_mask */
289 0xffff, /* dst_mask */
b34976b6 290 FALSE), /* pcrel_offset */
5bd4f169
AM		 291
292 /* Bits 16-31 of an address. */
293 HOWTO (R_PPC64_ADDR16_HI, /* type */
294 16, /* rightshift */
295 1, /* size (0 = byte, 1 = short, 2 = long) */
296 16, /* bitsize */
b34976b6 297 FALSE, /* pc_relative */
5bd4f169
AM		 298 0, /* bitpos */
299 complain_overflow_dont, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_PPC64_ADDR16_HI", /* name */
b34976b6 302 FALSE, /* partial_inplace */
5bd4f169
AM		 303 0, /* src_mask */
304 0xffff, /* dst_mask */
b34976b6 305 FALSE), /* pcrel_offset */
5bd4f169
AM		 306
307 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
308 bits, treated as a signed number, is negative. */
309 HOWTO (R_PPC64_ADDR16_HA, /* type */
310 16, /* rightshift */
311 1, /* size (0 = byte, 1 = short, 2 = long) */
312 16, /* bitsize */
b34976b6 313 FALSE, /* pc_relative */
5bd4f169
AM		 314 0, /* bitpos */
315 complain_overflow_dont, /* complain_on_overflow */
805fc799 316 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 317 "R_PPC64_ADDR16_HA", /* name */
b34976b6 318 FALSE, /* partial_inplace */
5bd4f169
AM		 319 0, /* src_mask */
320 0xffff, /* dst_mask */
b34976b6 321 FALSE), /* pcrel_offset */
5bd4f169
AM		 322
323 /* An absolute 16 bit branch; the lower two bits must be zero.
324 FIXME: we don't check that, we just clear them. */
325 HOWTO (R_PPC64_ADDR14, /* type */
326 0, /* rightshift */
327 2, /* size (0 = byte, 1 = short, 2 = long) */
328 16, /* bitsize */
b34976b6 329 FALSE, /* pc_relative */
5bd4f169
AM		 330 0, /* bitpos */
331 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 332 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 333 "R_PPC64_ADDR14", /* name */
b34976b6 334 FALSE, /* partial_inplace */
d006db6c 335 0, /* src_mask */
f5e87a1d 336 0x0000fffc, /* dst_mask */
b34976b6 337 FALSE), /* pcrel_offset */
5bd4f169
AM		 338
339 /* An absolute 16 bit branch, for which bit 10 should be set to
340 indicate that the branch is expected to be taken. The lower two
341 bits must be zero. */
342 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
343 0, /* rightshift */
344 2, /* size (0 = byte, 1 = short, 2 = long) */
345 16, /* bitsize */
b34976b6 346 FALSE, /* pc_relative */
5bd4f169
AM		 347 0, /* bitpos */
348 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 349 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 350 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 351 FALSE, /* partial_inplace */
d006db6c 352 0, /* src_mask */
f5e87a1d 353 0x0000fffc, /* dst_mask */
b34976b6 354 FALSE), /* pcrel_offset */
5bd4f169
AM		 355
356 /* An absolute 16 bit branch, for which bit 10 should be set to
357 indicate that the branch is not expected to be taken. The lower
358 two bits must be zero. */
359 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
b34976b6 363 FALSE, /* pc_relative */
5bd4f169
AM		 364 0, /* bitpos */
365 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 366 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 367 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 368 FALSE, /* partial_inplace */
d006db6c 369 0, /* src_mask */
f5e87a1d 370 0x0000fffc, /* dst_mask */
b34976b6 371 FALSE), /* pcrel_offset */
5bd4f169
AM		 372
373 /* A relative 26 bit branch; the lower two bits must be zero. */
374 HOWTO (R_PPC64_REL24, /* type */
375 0, /* rightshift */
376 2, /* size (0 = byte, 1 = short, 2 = long) */
377 26, /* bitsize */
b34976b6 378 TRUE, /* pc_relative */
5bd4f169
AM		 379 0, /* bitpos */
380 complain_overflow_signed, /* complain_on_overflow */
2441e016 381 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 382 "R_PPC64_REL24", /* name */
b34976b6 383 FALSE, /* partial_inplace */
d006db6c 384 0, /* src_mask */
f5e87a1d 385 0x03fffffc, /* dst_mask */
b34976b6 386 TRUE), /* pcrel_offset */
5bd4f169
AM		 387
388 /* A relative 16 bit branch; the lower two bits must be zero. */
389 HOWTO (R_PPC64_REL14, /* type */
390 0, /* rightshift */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
392 16, /* bitsize */
b34976b6 393 TRUE, /* pc_relative */
5bd4f169
AM		 394 0, /* bitpos */
395 complain_overflow_signed, /* complain_on_overflow */
2441e016 396 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 397 "R_PPC64_REL14", /* name */
b34976b6 398 FALSE, /* partial_inplace */
d006db6c 399 0, /* src_mask */
f5e87a1d 400 0x0000fffc, /* dst_mask */
b34976b6 401 TRUE), /* pcrel_offset */
5bd4f169
AM		 402
403 /* A relative 16 bit branch. Bit 10 should be set to indicate that
404 the branch is expected to be taken. The lower two bits must be
405 zero. */
406 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
407 0, /* rightshift */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
409 16, /* bitsize */
b34976b6 410 TRUE, /* pc_relative */
5bd4f169
AM		 411 0, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
805fc799 413 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 414 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 415 FALSE, /* partial_inplace */
d006db6c 416 0, /* src_mask */
f5e87a1d 417 0x0000fffc, /* dst_mask */
b34976b6 418 TRUE), /* pcrel_offset */
5bd4f169
AM		 419
420 /* A relative 16 bit branch. Bit 10 should be set to indicate that
421 the branch is not expected to be taken. The lower two bits must
422 be zero. */
423 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
424 0, /* rightshift */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
426 16, /* bitsize */
b34976b6 427 TRUE, /* pc_relative */
5bd4f169
AM		 428 0, /* bitpos */
429 complain_overflow_signed, /* complain_on_overflow */
805fc799 430 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 431 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 432 FALSE, /* partial_inplace */
d006db6c 433 0, /* src_mask */
f5e87a1d 434 0x0000fffc, /* dst_mask */
b34976b6 435 TRUE), /* pcrel_offset */
5bd4f169
AM		 436
437 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
438 symbol. */
439 HOWTO (R_PPC64_GOT16, /* type */
440 0, /* rightshift */
441 1, /* size (0 = byte, 1 = short, 2 = long) */
442 16, /* bitsize */
b34976b6 443 FALSE, /* pc_relative */
5bd4f169
AM		 444 0, /* bitpos */
445 complain_overflow_signed, /* complain_on_overflow */
805fc799 446 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 447 "R_PPC64_GOT16", /* name */
b34976b6 448 FALSE, /* partial_inplace */
5bd4f169
AM		 449 0, /* src_mask */
450 0xffff, /* dst_mask */
b34976b6 451 FALSE), /* pcrel_offset */
5bd4f169
AM		 452
453 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
454 the symbol. */
455 HOWTO (R_PPC64_GOT16_LO, /* type */
456 0, /* rightshift */
457 1, /* size (0 = byte, 1 = short, 2 = long) */
458 16, /* bitsize */
b34976b6 459 FALSE, /* pc_relative */
5bd4f169
AM		 460 0, /* bitpos */
461 complain_overflow_dont, /* complain_on_overflow */
805fc799 462 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 463 "R_PPC64_GOT16_LO", /* name */
b34976b6 464 FALSE, /* partial_inplace */
5bd4f169
AM		 465 0, /* src_mask */
466 0xffff, /* dst_mask */
b34976b6 467 FALSE), /* pcrel_offset */
5bd4f169
AM		 468
469 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
470 the symbol. */
471 HOWTO (R_PPC64_GOT16_HI, /* type */
472 16, /* rightshift */
473 1, /* size (0 = byte, 1 = short, 2 = long) */
474 16, /* bitsize */
b34976b6 475 FALSE, /* pc_relative */
5bd4f169
AM		 476 0, /* bitpos */
477 complain_overflow_dont,/* complain_on_overflow */
805fc799 478 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 479 "R_PPC64_GOT16_HI", /* name */
b34976b6 480 FALSE, /* partial_inplace */
5bd4f169
AM		 481 0, /* src_mask */
482 0xffff, /* dst_mask */
b34976b6 483 FALSE), /* pcrel_offset */
5bd4f169
AM		 484
485 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
486 the symbol. */
487 HOWTO (R_PPC64_GOT16_HA, /* type */
488 16, /* rightshift */
489 1, /* size (0 = byte, 1 = short, 2 = long) */
490 16, /* bitsize */
b34976b6 491 FALSE, /* pc_relative */
5bd4f169
AM		 492 0, /* bitpos */
493 complain_overflow_dont,/* complain_on_overflow */
805fc799 494 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 495 "R_PPC64_GOT16_HA", /* name */
b34976b6 496 FALSE, /* partial_inplace */
5bd4f169
AM		 497 0, /* src_mask */
498 0xffff, /* dst_mask */
b34976b6 499 FALSE), /* pcrel_offset */
5bd4f169
AM		 500
501 /* This is used only by the dynamic linker. The symbol should exist
502 both in the object being run and in some shared library. The
503 dynamic linker copies the data addressed by the symbol from the
504 shared library into the object, because the object being
505 run has to have the data at some particular address. */
506 HOWTO (R_PPC64_COPY, /* type */
507 0, /* rightshift */
f5e87a1d
AM		 508 0, /* this one is variable size */
509 0, /* bitsize */
b34976b6 510 FALSE, /* pc_relative */
5bd4f169 511 0, /* bitpos */
f5e87a1d
AM		 512 complain_overflow_dont, /* complain_on_overflow */
513 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 514 "R_PPC64_COPY", /* name */
b34976b6 515 FALSE, /* partial_inplace */
5bd4f169
AM		 516 0, /* src_mask */
517 0, /* dst_mask */
b34976b6 518 FALSE), /* pcrel_offset */
5bd4f169
AM		 519
520 /* Like R_PPC64_ADDR64, but used when setting global offset table
521 entries. */
522 HOWTO (R_PPC64_GLOB_DAT, /* type */
523 0, /* rightshift */
524 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
525 64, /* bitsize */
b34976b6 526 FALSE, /* pc_relative */
5bd4f169
AM		 527 0, /* bitpos */
528 complain_overflow_dont, /* complain_on_overflow */
805fc799 529 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 530 "R_PPC64_GLOB_DAT", /* name */
b34976b6 531 FALSE, /* partial_inplace */
5bd4f169 532 0, /* src_mask */
f5e87a1d 533 ONES (64), /* dst_mask */
b34976b6 534 FALSE), /* pcrel_offset */
5bd4f169
AM		 535
536 /* Created by the link editor. Marks a procedure linkage table
537 entry for a symbol. */
538 HOWTO (R_PPC64_JMP_SLOT, /* type */
539 0, /* rightshift */
540 0, /* size (0 = byte, 1 = short, 2 = long) */
541 0, /* bitsize */
b34976b6 542 FALSE, /* pc_relative */
5bd4f169
AM		 543 0, /* bitpos */
544 complain_overflow_dont, /* complain_on_overflow */
805fc799 545 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 546 "R_PPC64_JMP_SLOT", /* name */
b34976b6 547 FALSE, /* partial_inplace */
5bd4f169
AM		 548 0, /* src_mask */
549 0, /* dst_mask */
b34976b6 550 FALSE), /* pcrel_offset */
5bd4f169
AM		 551
552 /* Used only by the dynamic linker. When the object is run, this
553 doubleword64 is set to the load address of the object, plus the
554 addend. */
555 HOWTO (R_PPC64_RELATIVE, /* type */
556 0, /* rightshift */
557 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
558 64, /* bitsize */
b34976b6 559 FALSE, /* pc_relative */
5bd4f169
AM		 560 0, /* bitpos */
561 complain_overflow_dont, /* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_PPC64_RELATIVE", /* name */
b34976b6 564 FALSE, /* partial_inplace */
5bd4f169 565 0, /* src_mask */
f5e87a1d 566 ONES (64), /* dst_mask */
b34976b6 567 FALSE), /* pcrel_offset */
5bd4f169
AM		 568
569 /* Like R_PPC64_ADDR32, but may be unaligned. */
570 HOWTO (R_PPC64_UADDR32, /* type */
571 0, /* rightshift */
572 2, /* size (0 = byte, 1 = short, 2 = long) */
573 32, /* bitsize */
b34976b6 574 FALSE, /* pc_relative */
5bd4f169
AM		 575 0, /* bitpos */
576 complain_overflow_bitfield, /* complain_on_overflow */
577 bfd_elf_generic_reloc, /* special_function */
578 "R_PPC64_UADDR32", /* name */
b34976b6 579 FALSE, /* partial_inplace */
5bd4f169
AM		 580 0, /* src_mask */
581 0xffffffff, /* dst_mask */
b34976b6 582 FALSE), /* pcrel_offset */
5bd4f169
AM		 583
584 /* Like R_PPC64_ADDR16, but may be unaligned. */
585 HOWTO (R_PPC64_UADDR16, /* type */
586 0, /* rightshift */
587 1, /* size (0 = byte, 1 = short, 2 = long) */
588 16, /* bitsize */
b34976b6 589 FALSE, /* pc_relative */
5bd4f169
AM		 590 0, /* bitpos */
591 complain_overflow_bitfield, /* complain_on_overflow */
592 bfd_elf_generic_reloc, /* special_function */
593 "R_PPC64_UADDR16", /* name */
b34976b6 594 FALSE, /* partial_inplace */
5bd4f169
AM		 595 0, /* src_mask */
596 0xffff, /* dst_mask */
b34976b6 597 FALSE), /* pcrel_offset */
5bd4f169
AM		 598
599 /* 32-bit PC relative. */
600 HOWTO (R_PPC64_REL32, /* type */
601 0, /* rightshift */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
603 32, /* bitsize */
b34976b6 604 TRUE, /* pc_relative */
5bd4f169 605 0, /* bitpos */
cedb70c5 606 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 607 complain_overflow_signed, /* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_PPC64_REL32", /* name */
b34976b6 610 FALSE, /* partial_inplace */
5bd4f169
AM		 611 0, /* src_mask */
612 0xffffffff, /* dst_mask */
b34976b6 613 TRUE), /* pcrel_offset */
5bd4f169 614
10ed1bba 615 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 616 HOWTO (R_PPC64_PLT32, /* type */
617 0, /* rightshift */
618 2, /* size (0 = byte, 1 = short, 2 = long) */
619 32, /* bitsize */
b34976b6 620 FALSE, /* pc_relative */
5bd4f169
AM		 621 0, /* bitpos */
622 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 623 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 624 "R_PPC64_PLT32", /* name */
b34976b6 625 FALSE, /* partial_inplace */
5bd4f169 626 0, /* src_mask */
f5e87a1d 627 0xffffffff, /* dst_mask */
b34976b6 628 FALSE), /* pcrel_offset */
5bd4f169
AM		 629
630 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
631 FIXME: R_PPC64_PLTREL32 not supported. */
632 HOWTO (R_PPC64_PLTREL32, /* type */
633 0, /* rightshift */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
635 32, /* bitsize */
b34976b6 636 TRUE, /* pc_relative */
5bd4f169
AM		 637 0, /* bitpos */
638 complain_overflow_signed, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC64_PLTREL32", /* name */
b34976b6 641 FALSE, /* partial_inplace */
5bd4f169 642 0, /* src_mask */
f5e87a1d 643 0xffffffff, /* dst_mask */
b34976b6 644 TRUE), /* pcrel_offset */
5bd4f169
AM		 645
646 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
647 the symbol. */
648 HOWTO (R_PPC64_PLT16_LO, /* type */
649 0, /* rightshift */
650 1, /* size (0 = byte, 1 = short, 2 = long) */
651 16, /* bitsize */
b34976b6 652 FALSE, /* pc_relative */
5bd4f169
AM		 653 0, /* bitpos */
654 complain_overflow_dont, /* complain_on_overflow */
805fc799 655 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 656 "R_PPC64_PLT16_LO", /* name */
b34976b6 657 FALSE, /* partial_inplace */
5bd4f169
AM		 658 0, /* src_mask */
659 0xffff, /* dst_mask */
b34976b6 660 FALSE), /* pcrel_offset */
5bd4f169
AM		 661
662 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
663 the symbol. */
664 HOWTO (R_PPC64_PLT16_HI, /* type */
665 16, /* rightshift */
666 1, /* size (0 = byte, 1 = short, 2 = long) */
667 16, /* bitsize */
b34976b6 668 FALSE, /* pc_relative */
5bd4f169
AM		 669 0, /* bitpos */
670 complain_overflow_dont, /* complain_on_overflow */
805fc799 671 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 672 "R_PPC64_PLT16_HI", /* name */
b34976b6 673 FALSE, /* partial_inplace */
5bd4f169
AM		 674 0, /* src_mask */
675 0xffff, /* dst_mask */
b34976b6 676 FALSE), /* pcrel_offset */
5bd4f169
AM		 677
678 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
679 the symbol. */
680 HOWTO (R_PPC64_PLT16_HA, /* type */
681 16, /* rightshift */
682 1, /* size (0 = byte, 1 = short, 2 = long) */
683 16, /* bitsize */
b34976b6 684 FALSE, /* pc_relative */
5bd4f169
AM		 685 0, /* bitpos */
686 complain_overflow_dont, /* complain_on_overflow */
805fc799 687 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 688 "R_PPC64_PLT16_HA", /* name */
b34976b6 689 FALSE, /* partial_inplace */
5bd4f169
AM		 690 0, /* src_mask */
691 0xffff, /* dst_mask */
b34976b6 692 FALSE), /* pcrel_offset */
5bd4f169 693
c061c2d8 694 /* 16-bit section relative relocation. */
5bd4f169
AM		 695 HOWTO (R_PPC64_SECTOFF, /* type */
696 0, /* rightshift */
c061c2d8
AM		 697 1, /* size (0 = byte, 1 = short, 2 = long) */
698 16, /* bitsize */
b34976b6 699 FALSE, /* pc_relative */
5bd4f169
AM		 700 0, /* bitpos */
701 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 702 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 703 "R_PPC64_SECTOFF", /* name */
b34976b6 704 FALSE, /* partial_inplace */
5bd4f169 705 0, /* src_mask */
c061c2d8 706 0xffff, /* dst_mask */
b34976b6 707 FALSE), /* pcrel_offset */
5bd4f169 708
c061c2d8 709 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 710 HOWTO (R_PPC64_SECTOFF_LO, /* type */
711 0, /* rightshift */
712 1, /* size (0 = byte, 1 = short, 2 = long) */
713 16, /* bitsize */
b34976b6 714 FALSE, /* pc_relative */
5bd4f169
AM		 715 0, /* bitpos */
716 complain_overflow_dont, /* complain_on_overflow */
805fc799 717 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 718 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 719 FALSE, /* partial_inplace */
5bd4f169
AM		 720 0, /* src_mask */
721 0xffff, /* dst_mask */
b34976b6 722 FALSE), /* pcrel_offset */
5bd4f169
AM		 723
724 /* 16-bit upper half section relative relocation. */
725 HOWTO (R_PPC64_SECTOFF_HI, /* type */
726 16, /* rightshift */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
728 16, /* bitsize */
b34976b6 729 FALSE, /* pc_relative */
5bd4f169
AM		 730 0, /* bitpos */
731 complain_overflow_dont, /* complain_on_overflow */
805fc799 732 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 733 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 734 FALSE, /* partial_inplace */
5bd4f169
AM		 735 0, /* src_mask */
736 0xffff, /* dst_mask */
b34976b6 737 FALSE), /* pcrel_offset */
5bd4f169
AM		 738
739 /* 16-bit upper half adjusted section relative relocation. */
740 HOWTO (R_PPC64_SECTOFF_HA, /* type */
741 16, /* rightshift */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
743 16, /* bitsize */
b34976b6 744 FALSE, /* pc_relative */
5bd4f169
AM		 745 0, /* bitpos */
746 complain_overflow_dont, /* complain_on_overflow */
805fc799 747 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 748 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 749 FALSE, /* partial_inplace */
5bd4f169
AM		 750 0, /* src_mask */
751 0xffff, /* dst_mask */
b34976b6 752 FALSE), /* pcrel_offset */
5bd4f169 753
04c9666a
AM		 754 /* Like R_PPC64_REL24 without touching the two least significant bits. */
755 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 756 2, /* rightshift */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
758 30, /* bitsize */
b34976b6 759 TRUE, /* pc_relative */
5bd4f169
AM		 760 0, /* bitpos */
761 complain_overflow_dont, /* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
04c9666a 763 "R_PPC64_REL30", /* name */
b34976b6 764 FALSE, /* partial_inplace */
d006db6c 765 0, /* src_mask */
5bd4f169 766 0xfffffffc, /* dst_mask */
b34976b6 767 TRUE), /* pcrel_offset */
5bd4f169
AM		 768
769 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
770
771 /* A standard 64-bit relocation. */
772 HOWTO (R_PPC64_ADDR64, /* type */
773 0, /* rightshift */
774 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
775 64, /* bitsize */
b34976b6 776 FALSE, /* pc_relative */
5bd4f169
AM		 777 0, /* bitpos */
778 complain_overflow_dont, /* complain_on_overflow */
779 bfd_elf_generic_reloc, /* special_function */
780 "R_PPC64_ADDR64", /* name */
b34976b6 781 FALSE, /* partial_inplace */
5bd4f169 782 0, /* src_mask */
f5e87a1d 783 ONES (64), /* dst_mask */
b34976b6 784 FALSE), /* pcrel_offset */
5bd4f169
AM		 785
786 /* The bits 32-47 of an address. */
787 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
788 32, /* rightshift */
789 1, /* size (0 = byte, 1 = short, 2 = long) */
790 16, /* bitsize */
b34976b6 791 FALSE, /* pc_relative */
5bd4f169
AM		 792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 796 FALSE, /* partial_inplace */
5bd4f169
AM		 797 0, /* src_mask */
798 0xffff, /* dst_mask */
b34976b6 799 FALSE), /* pcrel_offset */
5bd4f169
AM		 800
801 /* The bits 32-47 of an address, plus 1 if the contents of the low
802 16 bits, treated as a signed number, is negative. */
803 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
804 32, /* rightshift */
805 1, /* size (0 = byte, 1 = short, 2 = long) */
806 16, /* bitsize */
b34976b6 807 FALSE, /* pc_relative */
5bd4f169
AM		 808 0, /* bitpos */
809 complain_overflow_dont, /* complain_on_overflow */
805fc799 810 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 811 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 812 FALSE, /* partial_inplace */
5bd4f169
AM		 813 0, /* src_mask */
814 0xffff, /* dst_mask */
b34976b6 815 FALSE), /* pcrel_offset */
5bd4f169
AM		 816
817 /* The bits 48-63 of an address. */
818 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
819 48, /* rightshift */
820 1, /* size (0 = byte, 1 = short, 2 = long) */
821 16, /* bitsize */
b34976b6 822 FALSE, /* pc_relative */
5bd4f169
AM		 823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 bfd_elf_generic_reloc, /* special_function */
826 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 827 FALSE, /* partial_inplace */
5bd4f169
AM		 828 0, /* src_mask */
829 0xffff, /* dst_mask */
b34976b6 830 FALSE), /* pcrel_offset */
5bd4f169
AM		 831
832 /* The bits 48-63 of an address, plus 1 if the contents of the low
833 16 bits, treated as a signed number, is negative. */
834 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
835 48, /* rightshift */
836 1, /* size (0 = byte, 1 = short, 2 = long) */
837 16, /* bitsize */
b34976b6 838 FALSE, /* pc_relative */
5bd4f169
AM		 839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
805fc799 841 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 842 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 843 FALSE, /* partial_inplace */
5bd4f169
AM		 844 0, /* src_mask */
845 0xffff, /* dst_mask */
b34976b6 846 FALSE), /* pcrel_offset */
5bd4f169
AM		 847
848 /* Like ADDR64, but may be unaligned. */
849 HOWTO (R_PPC64_UADDR64, /* type */
850 0, /* rightshift */
851 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
852 64, /* bitsize */
b34976b6 853 FALSE, /* pc_relative */
5bd4f169
AM		 854 0, /* bitpos */
855 complain_overflow_dont, /* complain_on_overflow */
856 bfd_elf_generic_reloc, /* special_function */
857 "R_PPC64_UADDR64", /* name */
b34976b6 858 FALSE, /* partial_inplace */
5bd4f169 859 0, /* src_mask */
f5e87a1d 860 ONES (64), /* dst_mask */
b34976b6 861 FALSE), /* pcrel_offset */
5bd4f169
AM		 862
863 /* 64-bit relative relocation. */
864 HOWTO (R_PPC64_REL64, /* type */
865 0, /* rightshift */
866 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
867 64, /* bitsize */
b34976b6 868 TRUE, /* pc_relative */
5bd4f169
AM		 869 0, /* bitpos */
870 complain_overflow_dont, /* complain_on_overflow */
871 bfd_elf_generic_reloc, /* special_function */
872 "R_PPC64_REL64", /* name */
b34976b6 873 FALSE, /* partial_inplace */
5bd4f169 874 0, /* src_mask */
f5e87a1d 875 ONES (64), /* dst_mask */
b34976b6 876 TRUE), /* pcrel_offset */
5bd4f169 877
cedb70c5 878 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 879 HOWTO (R_PPC64_PLT64, /* type */
880 0, /* rightshift */
881 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
882 64, /* bitsize */
b34976b6 883 FALSE, /* pc_relative */
5bd4f169
AM		 884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
805fc799 886 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 887 "R_PPC64_PLT64", /* name */
b34976b6 888 FALSE, /* partial_inplace */
5bd4f169 889 0, /* src_mask */
f5e87a1d 890 ONES (64), /* dst_mask */
b34976b6 891 FALSE), /* pcrel_offset */
5bd4f169
AM		 892
893 /* 64-bit PC relative relocation to the symbol's procedure linkage
894 table. */
895 /* FIXME: R_PPC64_PLTREL64 not supported. */
896 HOWTO (R_PPC64_PLTREL64, /* type */
897 0, /* rightshift */
898 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
899 64, /* bitsize */
b34976b6 900 TRUE, /* pc_relative */
5bd4f169
AM		 901 0, /* bitpos */
902 complain_overflow_dont, /* complain_on_overflow */
805fc799 903 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 904 "R_PPC64_PLTREL64", /* name */
b34976b6 905 FALSE, /* partial_inplace */
5bd4f169 906 0, /* src_mask */
f5e87a1d 907 ONES (64), /* dst_mask */
b34976b6 908 TRUE), /* pcrel_offset */
5bd4f169
AM		 909
910 /* 16 bit TOC-relative relocation. */
911
912 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
913 HOWTO (R_PPC64_TOC16, /* type */
914 0, /* rightshift */
915 1, /* size (0 = byte, 1 = short, 2 = long) */
916 16, /* bitsize */
b34976b6 917 FALSE, /* pc_relative */
5bd4f169
AM		 918 0, /* bitpos */
919 complain_overflow_signed, /* complain_on_overflow */
805fc799 920 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 921 "R_PPC64_TOC16", /* name */
b34976b6 922 FALSE, /* partial_inplace */
5bd4f169
AM		 923 0, /* src_mask */
924 0xffff, /* dst_mask */
b34976b6 925 FALSE), /* pcrel_offset */
5bd4f169
AM		 926
927 /* 16 bit TOC-relative relocation without overflow. */
928
929 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
930 HOWTO (R_PPC64_TOC16_LO, /* type */
931 0, /* rightshift */
932 1, /* size (0 = byte, 1 = short, 2 = long) */
933 16, /* bitsize */
b34976b6 934 FALSE, /* pc_relative */
5bd4f169
AM		 935 0, /* bitpos */
936 complain_overflow_dont, /* complain_on_overflow */
805fc799 937 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 938 "R_PPC64_TOC16_LO", /* name */
b34976b6 939 FALSE, /* partial_inplace */
5bd4f169
AM		 940 0, /* src_mask */
941 0xffff, /* dst_mask */
b34976b6 942 FALSE), /* pcrel_offset */
5bd4f169
AM		 943
944 /* 16 bit TOC-relative relocation, high 16 bits. */
945
946 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
947 HOWTO (R_PPC64_TOC16_HI, /* type */
948 16, /* rightshift */
949 1, /* size (0 = byte, 1 = short, 2 = long) */
950 16, /* bitsize */
b34976b6 951 FALSE, /* pc_relative */
5bd4f169
AM		 952 0, /* bitpos */
953 complain_overflow_dont, /* complain_on_overflow */
805fc799 954 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 955 "R_PPC64_TOC16_HI", /* name */
b34976b6 956 FALSE, /* partial_inplace */
5bd4f169
AM		 957 0, /* src_mask */
958 0xffff, /* dst_mask */
b34976b6 959 FALSE), /* pcrel_offset */
5bd4f169
AM		 960
961 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
962 contents of the low 16 bits, treated as a signed number, is
963 negative. */
964
965 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
966 HOWTO (R_PPC64_TOC16_HA, /* type */
967 16, /* rightshift */
968 1, /* size (0 = byte, 1 = short, 2 = long) */
969 16, /* bitsize */
b34976b6 970 FALSE, /* pc_relative */
5bd4f169
AM		 971 0, /* bitpos */
972 complain_overflow_dont, /* complain_on_overflow */
805fc799 973 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 974 "R_PPC64_TOC16_HA", /* name */
b34976b6 975 FALSE, /* partial_inplace */
5bd4f169
AM		 976 0, /* src_mask */
977 0xffff, /* dst_mask */
b34976b6 978 FALSE), /* pcrel_offset */
5bd4f169
AM		 979
980 /* 64-bit relocation; insert value of TOC base (.TOC.). */
981
982 /* R_PPC64_TOC 51 doubleword64 .TOC. */
983 HOWTO (R_PPC64_TOC, /* type */
984 0, /* rightshift */
985 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
986 64, /* bitsize */
b34976b6 987 FALSE, /* pc_relative */
5bd4f169
AM		 988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 990 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 991 "R_PPC64_TOC", /* name */
b34976b6 992 FALSE, /* partial_inplace */
5bd4f169 993 0, /* src_mask */
f5e87a1d 994 ONES (64), /* dst_mask */
b34976b6 995 FALSE), /* pcrel_offset */
5bd4f169
AM		 996
997 /* Like R_PPC64_GOT16, but also informs the link editor that the
998 value to relocate may (!) refer to a PLT entry which the link
999 editor (a) may replace with the symbol value. If the link editor
1000 is unable to fully resolve the symbol, it may (b) create a PLT
1001 entry and store the address to the new PLT entry in the GOT.
1002 This permits lazy resolution of function symbols at run time.
1003 The link editor may also skip all of this and just (c) emit a
1004 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1005 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1006 HOWTO (R_PPC64_PLTGOT16, /* type */
1007 0, /* rightshift */
1008 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 16, /* bitsize */
b34976b6 1010 FALSE, /* pc_relative */
5bd4f169
AM		 1011 0, /* bitpos */
1012 complain_overflow_signed, /* complain_on_overflow */
805fc799 1013 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1014 "R_PPC64_PLTGOT16", /* name */
1015 FALSE, /* partial_inplace */
1016 0, /* src_mask */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1019
1020 /* Like R_PPC64_PLTGOT16, but without overflow. */
1021 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1022 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1023 0, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1025 16, /* bitsize */
1026 FALSE, /* pc_relative */
1027 0, /* bitpos */
1028 complain_overflow_dont, /* complain_on_overflow */
1029 ppc64_elf_unhandled_reloc, /* special_function */
1030 "R_PPC64_PLTGOT16_LO", /* name */
1031 FALSE, /* partial_inplace */
1032 0, /* src_mask */
1033 0xffff, /* dst_mask */
1034 FALSE), /* pcrel_offset */
1035
1036 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1037 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1038 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 16, /* bitsize */
1042 FALSE, /* pc_relative */
1043 0, /* bitpos */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc64_elf_unhandled_reloc, /* special_function */
1046 "R_PPC64_PLTGOT16_HI", /* name */
1047 FALSE, /* partial_inplace */
1048 0, /* src_mask */
1049 0xffff, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1051
1052 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1053 1 if the contents of the low 16 bits, treated as a signed number,
1054 is negative. */
1055 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1056 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1057 16, /* rightshift */
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1059 16, /* bitsize */
1060 FALSE, /* pc_relative */
1061 0, /* bitpos */
1062 complain_overflow_dont,/* complain_on_overflow */
1063 ppc64_elf_unhandled_reloc, /* special_function */
1064 "R_PPC64_PLTGOT16_HA", /* name */
1065 FALSE, /* partial_inplace */
1066 0, /* src_mask */
1067 0xffff, /* dst_mask */
1068 FALSE), /* pcrel_offset */
1069
1070 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1071 HOWTO (R_PPC64_ADDR16_DS, /* type */
1072 0, /* rightshift */
1073 1, /* size (0 = byte, 1 = short, 2 = long) */
1074 16, /* bitsize */
1075 FALSE, /* pc_relative */
1076 0, /* bitpos */
1077 complain_overflow_bitfield, /* complain_on_overflow */
1078 bfd_elf_generic_reloc, /* special_function */
1079 "R_PPC64_ADDR16_DS", /* name */
1080 FALSE, /* partial_inplace */
1081 0, /* src_mask */
1082 0xfffc, /* dst_mask */
1083 FALSE), /* pcrel_offset */
1084
1085 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1086 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1087 0, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1089 16, /* bitsize */
1090 FALSE, /* pc_relative */
1091 0, /* bitpos */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_PPC64_ADDR16_LO_DS",/* name */
1095 FALSE, /* partial_inplace */
1096 0, /* src_mask */
1097 0xfffc, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1099
1100 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1101 HOWTO (R_PPC64_GOT16_DS, /* type */
1102 0, /* rightshift */
1103 1, /* size (0 = byte, 1 = short, 2 = long) */
1104 16, /* bitsize */
1105 FALSE, /* pc_relative */
1106 0, /* bitpos */
1107 complain_overflow_signed, /* complain_on_overflow */
1108 ppc64_elf_unhandled_reloc, /* special_function */
1109 "R_PPC64_GOT16_DS", /* name */
1110 FALSE, /* partial_inplace */
1111 0, /* src_mask */
1112 0xfffc, /* dst_mask */
1113 FALSE), /* pcrel_offset */
1114
1115 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1116 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1117 0, /* rightshift */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1119 16, /* bitsize */
1120 FALSE, /* pc_relative */
1121 0, /* bitpos */
1122 complain_overflow_dont, /* complain_on_overflow */
1123 ppc64_elf_unhandled_reloc, /* special_function */
1124 "R_PPC64_GOT16_LO_DS", /* name */
1125 FALSE, /* partial_inplace */
1126 0, /* src_mask */
1127 0xfffc, /* dst_mask */
1128 FALSE), /* pcrel_offset */
1129
1130 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1131 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1132 0, /* rightshift */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1134 16, /* bitsize */
1135 FALSE, /* pc_relative */
1136 0, /* bitpos */
1137 complain_overflow_dont, /* complain_on_overflow */
1138 ppc64_elf_unhandled_reloc, /* special_function */
1139 "R_PPC64_PLT16_LO_DS", /* name */
1140 FALSE, /* partial_inplace */
1141 0, /* src_mask */
1142 0xfffc, /* dst_mask */
1143 FALSE), /* pcrel_offset */
1144
1145 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1146 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1147 0, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1149 16, /* bitsize */
1150 FALSE, /* pc_relative */
1151 0, /* bitpos */
1152 complain_overflow_bitfield, /* complain_on_overflow */
1153 ppc64_elf_sectoff_reloc, /* special_function */
1154 "R_PPC64_SECTOFF_DS", /* name */
1155 FALSE, /* partial_inplace */
1156 0, /* src_mask */
1157 0xfffc, /* dst_mask */
1158 FALSE), /* pcrel_offset */
1159
1160 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1161 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1162 0, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1164 16, /* bitsize */
1165 FALSE, /* pc_relative */
1166 0, /* bitpos */
1167 complain_overflow_dont, /* complain_on_overflow */
1168 ppc64_elf_sectoff_reloc, /* special_function */
1169 "R_PPC64_SECTOFF_LO_DS",/* name */
1170 FALSE, /* partial_inplace */
1171 0, /* src_mask */
1172 0xfffc, /* dst_mask */
1173 FALSE), /* pcrel_offset */
1174
1175 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1176 HOWTO (R_PPC64_TOC16_DS, /* type */
1177 0, /* rightshift */
1178 1, /* size (0 = byte, 1 = short, 2 = long) */
1179 16, /* bitsize */
1180 FALSE, /* pc_relative */
1181 0, /* bitpos */
1182 complain_overflow_signed, /* complain_on_overflow */
1183 ppc64_elf_toc_reloc, /* special_function */
1184 "R_PPC64_TOC16_DS", /* name */
1185 FALSE, /* partial_inplace */
1186 0, /* src_mask */
1187 0xfffc, /* dst_mask */
1188 FALSE), /* pcrel_offset */
1189
1190 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1191 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1192 0, /* rightshift */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 16, /* bitsize */
1195 FALSE, /* pc_relative */
1196 0, /* bitpos */
1197 complain_overflow_dont, /* complain_on_overflow */
1198 ppc64_elf_toc_reloc, /* special_function */
1199 "R_PPC64_TOC16_LO_DS", /* name */
1200 FALSE, /* partial_inplace */
1201 0, /* src_mask */
1202 0xfffc, /* dst_mask */
1203 FALSE), /* pcrel_offset */
1204
1205 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1206 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1207 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1208 0, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 16, /* bitsize */
1211 FALSE, /* pc_relative */
1212 0, /* bitpos */
1213 complain_overflow_signed, /* complain_on_overflow */
1214 ppc64_elf_unhandled_reloc, /* special_function */
1215 "R_PPC64_PLTGOT16_DS", /* name */
1216 FALSE, /* partial_inplace */
1217 0, /* src_mask */
1218 0xfffc, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1220
1221 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1222 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1223 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1224 0, /* rightshift */
1225 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 16, /* bitsize */
1227 FALSE, /* pc_relative */
1228 0, /* bitpos */
1229 complain_overflow_dont, /* complain_on_overflow */
1230 ppc64_elf_unhandled_reloc, /* special_function */
1231 "R_PPC64_PLTGOT16_LO_DS",/* name */
1232 FALSE, /* partial_inplace */
1233 0, /* src_mask */
1234 0xfffc, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1236
1237 /* Marker reloc for TLS. */
1238 HOWTO (R_PPC64_TLS,
1239 0, /* rightshift */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 32, /* bitsize */
1242 FALSE, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 "R_PPC64_TLS", /* name */
1247 FALSE, /* partial_inplace */
1248 0, /* src_mask */
1249 0, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* Computes the load module index of the load module that contains the
1253 definition of its TLS sym. */
1254 HOWTO (R_PPC64_DTPMOD64,
1255 0, /* rightshift */
1256 4, /* size (0 = byte, 1 = short, 2 = long) */
1257 64, /* bitsize */
1258 FALSE, /* pc_relative */
1259 0, /* bitpos */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 ppc64_elf_unhandled_reloc, /* special_function */
1262 "R_PPC64_DTPMOD64", /* name */
1263 FALSE, /* partial_inplace */
1264 0, /* src_mask */
1265 ONES (64), /* dst_mask */
1266 FALSE), /* pcrel_offset */
1267
1268 /* Computes a dtv-relative displacement, the difference between the value
1269 of sym+add and the base address of the thread-local storage block that
1270 contains the definition of sym, minus 0x8000. */
1271 HOWTO (R_PPC64_DTPREL64,
1272 0, /* rightshift */
1273 4, /* size (0 = byte, 1 = short, 2 = long) */
1274 64, /* bitsize */
1275 FALSE, /* pc_relative */
1276 0, /* bitpos */
1277 complain_overflow_dont, /* complain_on_overflow */
1278 ppc64_elf_unhandled_reloc, /* special_function */
1279 "R_PPC64_DTPREL64", /* name */
1280 FALSE, /* partial_inplace */
1281 0, /* src_mask */
1282 ONES (64), /* dst_mask */
1283 FALSE), /* pcrel_offset */
1284
1285 /* A 16 bit dtprel reloc. */
1286 HOWTO (R_PPC64_DTPREL16,
1287 0, /* rightshift */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1289 16, /* bitsize */
1290 FALSE, /* pc_relative */
1291 0, /* bitpos */
1292 complain_overflow_signed, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc, /* special_function */
1294 "R_PPC64_DTPREL16", /* name */
1295 FALSE, /* partial_inplace */
1296 0, /* src_mask */
1297 0xffff, /* dst_mask */
1298 FALSE), /* pcrel_offset */
1299
1300 /* Like DTPREL16, but no overflow. */
1301 HOWTO (R_PPC64_DTPREL16_LO,
1302 0, /* rightshift */
1303 1, /* size (0 = byte, 1 = short, 2 = long) */
1304 16, /* bitsize */
1305 FALSE, /* pc_relative */
1306 0, /* bitpos */
1307 complain_overflow_dont, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc, /* special_function */
1309 "R_PPC64_DTPREL16_LO", /* name */
1310 FALSE, /* partial_inplace */
1311 0, /* src_mask */
1312 0xffff, /* dst_mask */
1313 FALSE), /* pcrel_offset */
1314
1315 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1316 HOWTO (R_PPC64_DTPREL16_HI,
1317 16, /* rightshift */
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1319 16, /* bitsize */
1320 FALSE, /* pc_relative */
1321 0, /* bitpos */
1322 complain_overflow_dont, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc, /* special_function */
1324 "R_PPC64_DTPREL16_HI", /* name */
1325 FALSE, /* partial_inplace */
1326 0, /* src_mask */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1329
1330 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1331 HOWTO (R_PPC64_DTPREL16_HA,
1332 16, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc, /* special_function */
1339 "R_PPC64_DTPREL16_HA", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HIGHER,
1347 32, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_dont, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc, /* special_function */
1354 "R_PPC64_DTPREL16_HIGHER", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1362 32, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1364 16, /* bitsize */
1365 FALSE, /* pc_relative */
1366 0, /* bitpos */
1367 complain_overflow_dont, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc, /* special_function */
1369 "R_PPC64_DTPREL16_HIGHERA", /* name */
1370 FALSE, /* partial_inplace */
1371 0, /* src_mask */
1372 0xffff, /* dst_mask */
1373 FALSE), /* pcrel_offset */
1374
1375 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1377 48, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1379 16, /* bitsize */
1380 FALSE, /* pc_relative */
1381 0, /* bitpos */
1382 complain_overflow_dont, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHEST", /* name */
1385 FALSE, /* partial_inplace */
1386 0, /* src_mask */
1387 0xffff, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1389
1390 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1392 48, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 16, /* bitsize */
1395 FALSE, /* pc_relative */
1396 0, /* bitpos */
1397 complain_overflow_dont, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1400 FALSE, /* partial_inplace */
1401 0, /* src_mask */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1404
1405 /* Like DTPREL16, but for insns with a DS field. */
1406 HOWTO (R_PPC64_DTPREL16_DS,
1407 0, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 16, /* bitsize */
1410 FALSE, /* pc_relative */
1411 0, /* bitpos */
1412 complain_overflow_signed, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc, /* special_function */
1414 "R_PPC64_DTPREL16_DS", /* name */
1415 FALSE, /* partial_inplace */
1416 0, /* src_mask */
1417 0xfffc, /* dst_mask */
1418 FALSE), /* pcrel_offset */
1419
1420 /* Like DTPREL16_DS, but no overflow. */
1421 HOWTO (R_PPC64_DTPREL16_LO_DS,
1422 0, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1424 16, /* bitsize */
1425 FALSE, /* pc_relative */
1426 0, /* bitpos */
1427 complain_overflow_dont, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc, /* special_function */
1429 "R_PPC64_DTPREL16_LO_DS", /* name */
1430 FALSE, /* partial_inplace */
1431 0, /* src_mask */
1432 0xfffc, /* dst_mask */
1433 FALSE), /* pcrel_offset */
1434
1435 /* Computes a tp-relative displacement, the difference between the value of
1436 sym+add and the value of the thread pointer (r13). */
1437 HOWTO (R_PPC64_TPREL64,
1438 0, /* rightshift */
1439 4, /* size (0 = byte, 1 = short, 2 = long) */
1440 64, /* bitsize */
1441 FALSE, /* pc_relative */
1442 0, /* bitpos */
1443 complain_overflow_dont, /* complain_on_overflow */
1444 ppc64_elf_unhandled_reloc, /* special_function */
1445 "R_PPC64_TPREL64", /* name */
1446 FALSE, /* partial_inplace */
1447 0, /* src_mask */
1448 ONES (64), /* dst_mask */
1449 FALSE), /* pcrel_offset */
1450
1451 /* A 16 bit tprel reloc. */
1452 HOWTO (R_PPC64_TPREL16,
1453 0, /* rightshift */
1454 1, /* size (0 = byte, 1 = short, 2 = long) */
1455 16, /* bitsize */
1456 FALSE, /* pc_relative */
1457 0, /* bitpos */
1458 complain_overflow_signed, /* complain_on_overflow */
1459 ppc64_elf_unhandled_reloc, /* special_function */
1460 "R_PPC64_TPREL16", /* name */
1461 FALSE, /* partial_inplace */
1462 0, /* src_mask */
1463 0xffff, /* dst_mask */
1464 FALSE), /* pcrel_offset */
1465
1466 /* Like TPREL16, but no overflow. */
1467 HOWTO (R_PPC64_TPREL16_LO,
1468 0, /* rightshift */
1469 1, /* size (0 = byte, 1 = short, 2 = long) */
1470 16, /* bitsize */
1471 FALSE, /* pc_relative */
1472 0, /* bitpos */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc, /* special_function */
1475 "R_PPC64_TPREL16_LO", /* name */
1476 FALSE, /* partial_inplace */
1477 0, /* src_mask */
1478 0xffff, /* dst_mask */
1479 FALSE), /* pcrel_offset */
1480
1481 /* Like TPREL16_LO, but next higher group of 16 bits. */
1482 HOWTO (R_PPC64_TPREL16_HI,
1483 16, /* rightshift */
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1485 16, /* bitsize */
1486 FALSE, /* pc_relative */
1487 0, /* bitpos */
1488 complain_overflow_dont, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc, /* special_function */
1490 "R_PPC64_TPREL16_HI", /* name */
1491 FALSE, /* partial_inplace */
1492 0, /* src_mask */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1495
1496 /* Like TPREL16_HI, but adjust for low 16 bits. */
1497 HOWTO (R_PPC64_TPREL16_HA,
1498 16, /* rightshift */
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1500 16, /* bitsize */
1501 FALSE, /* pc_relative */
1502 0, /* bitpos */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc, /* special_function */
1505 "R_PPC64_TPREL16_HA", /* name */
1506 FALSE, /* partial_inplace */
1507 0, /* src_mask */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1510
1511 /* Like TPREL16_HI, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HIGHER,
1513 32, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1515 16, /* bitsize */
1516 FALSE, /* pc_relative */
1517 0, /* bitpos */
1518 complain_overflow_dont, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc, /* special_function */
1520 "R_PPC64_TPREL16_HIGHER", /* name */
1521 FALSE, /* partial_inplace */
1522 0, /* src_mask */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1525
1526 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HIGHERA,
1528 32, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1530 16, /* bitsize */
1531 FALSE, /* pc_relative */
1532 0, /* bitpos */
1533 complain_overflow_dont, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc, /* special_function */
1535 "R_PPC64_TPREL16_HIGHERA", /* name */
1536 FALSE, /* partial_inplace */
1537 0, /* src_mask */
1538 0xffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1540
1541 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHEST,
1543 48, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1545 16, /* bitsize */
1546 FALSE, /* pc_relative */
1547 0, /* bitpos */
1548 complain_overflow_dont, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc, /* special_function */
1550 "R_PPC64_TPREL16_HIGHEST", /* name */
1551 FALSE, /* partial_inplace */
1552 0, /* src_mask */
1553 0xffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1555
1556 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1558 48, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1560 16, /* bitsize */
1561 FALSE, /* pc_relative */
1562 0, /* bitpos */
1563 complain_overflow_dont, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc, /* special_function */
1565 "R_PPC64_TPREL16_HIGHESTA", /* name */
1566 FALSE, /* partial_inplace */
1567 0, /* src_mask */
1568 0xffff, /* dst_mask */
1569 FALSE), /* pcrel_offset */
1570
1571 /* Like TPREL16, but for insns with a DS field. */
1572 HOWTO (R_PPC64_TPREL16_DS,
1573 0, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1575 16, /* bitsize */
1576 FALSE, /* pc_relative */
1577 0, /* bitpos */
1578 complain_overflow_signed, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc, /* special_function */
1580 "R_PPC64_TPREL16_DS", /* name */
1581 FALSE, /* partial_inplace */
1582 0, /* src_mask */
1583 0xfffc, /* dst_mask */
1584 FALSE), /* pcrel_offset */
1585
1586 /* Like TPREL16_DS, but no overflow. */
1587 HOWTO (R_PPC64_TPREL16_LO_DS,
1588 0, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1590 16, /* bitsize */
1591 FALSE, /* pc_relative */
1592 0, /* bitpos */
1593 complain_overflow_dont, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc, /* special_function */
1595 "R_PPC64_TPREL16_LO_DS", /* name */
1596 FALSE, /* partial_inplace */
1597 0, /* src_mask */
1598 0xfffc, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1600
1601 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1602 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1603 to the first entry relative to the TOC base (r2). */
1604 HOWTO (R_PPC64_GOT_TLSGD16,
1605 0, /* rightshift */
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1607 16, /* bitsize */
1608 FALSE, /* pc_relative */
1609 0, /* bitpos */
1610 complain_overflow_signed, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc, /* special_function */
1612 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1613 FALSE, /* partial_inplace */
5bd4f169
AM		 1614 0, /* src_mask */
1615 0xffff, /* dst_mask */
b34976b6 1616 FALSE), /* pcrel_offset */
5bd4f169 1617
411e1bfb
AM		 1618 /* Like GOT_TLSGD16, but no overflow. */
1619 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1620 0, /* rightshift */
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1622 16, /* bitsize */
b34976b6 1623 FALSE, /* pc_relative */
5bd4f169
AM		 1624 0, /* bitpos */
1625 complain_overflow_dont, /* complain_on_overflow */
805fc799 1626 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1627 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1628 FALSE, /* partial_inplace */
5bd4f169
AM		 1629 0, /* src_mask */
1630 0xffff, /* dst_mask */
b34976b6 1631 FALSE), /* pcrel_offset */
5bd4f169 1632
411e1bfb
AM		 1633 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1634 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1635 16, /* rightshift */
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1637 16, /* bitsize */
b34976b6 1638 FALSE, /* pc_relative */
5bd4f169
AM		 1639 0, /* bitpos */
1640 complain_overflow_dont, /* complain_on_overflow */
805fc799 1641 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1642 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1643 FALSE, /* partial_inplace */
5bd4f169
AM		 1644 0, /* src_mask */
1645 0xffff, /* dst_mask */
b34976b6 1646 FALSE), /* pcrel_offset */
5bd4f169 1647
411e1bfb
AM		 1648 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1650 16, /* rightshift */
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 16, /* bitsize */
b34976b6 1653 FALSE, /* pc_relative */
5bd4f169 1654 0, /* bitpos */
411e1bfb 1655 complain_overflow_dont, /* complain_on_overflow */
805fc799 1656 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1657 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1658 FALSE, /* partial_inplace */
5bd4f169
AM		 1659 0, /* src_mask */
1660 0xffff, /* dst_mask */
b34976b6 1661 FALSE), /* pcrel_offset */
5bd4f169 1662
411e1bfb
AM		 1663 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1664 with values (sym+add)@dtpmod and zero, and computes the offset to the
1665 first entry relative to the TOC base (r2). */
1666 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1667 0, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 16, /* bitsize */
b34976b6 1670 FALSE, /* pc_relative */
5bd4f169 1671 0, /* bitpos */
411e1bfb
AM		 1672 complain_overflow_signed, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc, /* special_function */
1674 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1675 FALSE, /* partial_inplace */
d006db6c 1676 0, /* src_mask */
411e1bfb 1677 0xffff, /* dst_mask */
b34976b6 1678 FALSE), /* pcrel_offset */
5bd4f169 1679
411e1bfb
AM		 1680 /* Like GOT_TLSLD16, but no overflow. */
1681 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1682 0, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 16, /* bitsize */
b34976b6 1685 FALSE, /* pc_relative */
5bd4f169 1686 0, /* bitpos */
411e1bfb
AM		 1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc, /* special_function */
1689 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1690 FALSE, /* partial_inplace */
d006db6c 1691 0, /* src_mask */
411e1bfb 1692 0xffff, /* dst_mask */
b34976b6 1693 FALSE), /* pcrel_offset */
5bd4f169 1694
411e1bfb
AM		 1695 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1696 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1697 16, /* rightshift */
5bd4f169
AM		 1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1699 16, /* bitsize */
b34976b6 1700 FALSE, /* pc_relative */
5bd4f169 1701 0, /* bitpos */
411e1bfb 1702 complain_overflow_dont, /* complain_on_overflow */
805fc799 1703 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1704 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1705 FALSE, /* partial_inplace */
d006db6c 1706 0, /* src_mask */
411e1bfb 1707 0xffff, /* dst_mask */
b34976b6 1708 FALSE), /* pcrel_offset */
5bd4f169 1709
411e1bfb
AM		 1710 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1712 16, /* rightshift */
5bd4f169
AM		 1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1714 16, /* bitsize */
b34976b6 1715 FALSE, /* pc_relative */
5bd4f169
AM		 1716 0, /* bitpos */
1717 complain_overflow_dont, /* complain_on_overflow */
805fc799 1718 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1719 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1720 FALSE, /* partial_inplace */
d006db6c 1721 0, /* src_mask */
411e1bfb 1722 0xffff, /* dst_mask */
b34976b6 1723 FALSE), /* pcrel_offset */
5bd4f169 1724
411e1bfb
AM		 1725 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1726 the offset to the entry relative to the TOC base (r2). */
1727 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1728 0, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 16, /* bitsize */
b34976b6 1731 FALSE, /* pc_relative */
5bd4f169 1732 0, /* bitpos */
411e1bfb 1733 complain_overflow_signed, /* complain_on_overflow */
805fc799 1734 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1735 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1736 FALSE, /* partial_inplace */
d006db6c 1737 0, /* src_mask */
5bd4f169 1738 0xfffc, /* dst_mask */
b34976b6 1739 FALSE), /* pcrel_offset */
5bd4f169 1740
411e1bfb
AM		 1741 /* Like GOT_DTPREL16_DS, but no overflow. */
1742 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1743 0, /* rightshift */
c061c2d8
AM		 1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 16, /* bitsize */
b34976b6 1746 FALSE, /* pc_relative */
5bd4f169 1747 0, /* bitpos */
411e1bfb
AM		 1748 complain_overflow_dont, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc, /* special_function */
1750 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1751 FALSE, /* partial_inplace */
d006db6c 1752 0, /* src_mask */
c061c2d8 1753 0xfffc, /* dst_mask */
b34976b6 1754 FALSE), /* pcrel_offset */
5bd4f169 1755
411e1bfb
AM		 1756 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1757 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1758 16, /* rightshift */
5bd4f169
AM		 1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1760 16, /* bitsize */
b34976b6 1761 FALSE, /* pc_relative */
5bd4f169
AM		 1762 0, /* bitpos */
1763 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1764 ppc64_elf_unhandled_reloc, /* special_function */
1765 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1766 FALSE, /* partial_inplace */
d006db6c 1767 0, /* src_mask */
411e1bfb 1768 0xffff, /* dst_mask */
b34976b6 1769 FALSE), /* pcrel_offset */
5bd4f169 1770
411e1bfb
AM		 1771 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1773 16, /* rightshift */
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1775 16, /* bitsize */
1776 FALSE, /* pc_relative */
1777 0, /* bitpos */
1778 complain_overflow_dont, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_HA", /* name */
1781 FALSE, /* partial_inplace */
1782 0, /* src_mask */
1783 0xffff, /* dst_mask */
1784 FALSE), /* pcrel_offset */
1785
1786 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1787 offset to the entry relative to the TOC base (r2). */
1788 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1789 0, /* rightshift */
1790 1, /* size (0 = byte, 1 = short, 2 = long) */
1791 16, /* bitsize */
b34976b6 1792 FALSE, /* pc_relative */
5bd4f169
AM		 1793 0, /* bitpos */
1794 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1795 ppc64_elf_unhandled_reloc, /* special_function */
1796 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1797 FALSE, /* partial_inplace */
d006db6c 1798 0, /* src_mask */
ad8e1ba5 1799 0xfffc, /* dst_mask */
b34976b6 1800 FALSE), /* pcrel_offset */
5bd4f169 1801
411e1bfb
AM		 1802 /* Like GOT_TPREL16_DS, but no overflow. */
1803 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1804 0, /* rightshift */
1805 1, /* size (0 = byte, 1 = short, 2 = long) */
1806 16, /* bitsize */
b34976b6 1807 FALSE, /* pc_relative */
5bd4f169
AM		 1808 0, /* bitpos */
1809 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1810 ppc64_elf_unhandled_reloc, /* special_function */
1811 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1812 FALSE, /* partial_inplace */
d006db6c 1813 0, /* src_mask */
ad8e1ba5 1814 0xfffc, /* dst_mask */
b34976b6 1815 FALSE), /* pcrel_offset */
5bd4f169 1816
411e1bfb
AM		 1817 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1818 HOWTO (R_PPC64_GOT_TPREL16_HI,
1819 16, /* rightshift */
5bd4f169
AM		 1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1821 16, /* bitsize */
b34976b6 1822 FALSE, /* pc_relative */
5bd4f169 1823 0, /* bitpos */
411e1bfb 1824 complain_overflow_dont, /* complain_on_overflow */
805fc799 1825 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1826 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1827 FALSE, /* partial_inplace */
d006db6c 1828 0, /* src_mask */
411e1bfb 1829 0xffff, /* dst_mask */
b34976b6 1830 FALSE), /* pcrel_offset */
5bd4f169 1831
411e1bfb
AM		 1832 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1833 HOWTO (R_PPC64_GOT_TPREL16_HA,
1834 16, /* rightshift */
5bd4f169
AM		 1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1836 16, /* bitsize */
b34976b6 1837 FALSE, /* pc_relative */
5bd4f169
AM		 1838 0, /* bitpos */
1839 complain_overflow_dont, /* complain_on_overflow */
805fc799 1840 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1841 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1842 FALSE, /* partial_inplace */
d006db6c 1843 0, /* src_mask */
411e1bfb 1844 0xffff, /* dst_mask */
b34976b6 1845 FALSE), /* pcrel_offset */
5bd4f169
AM		 1846
1847 /* GNU extension to record C++ vtable hierarchy. */
1848 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1849 0, /* rightshift */
1850 0, /* size (0 = byte, 1 = short, 2 = long) */
1851 0, /* bitsize */
b34976b6 1852 FALSE, /* pc_relative */
5bd4f169
AM		 1853 0, /* bitpos */
1854 complain_overflow_dont, /* complain_on_overflow */
1855 NULL, /* special_function */
1856 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1857 FALSE, /* partial_inplace */
5bd4f169
AM		 1858 0, /* src_mask */
1859 0, /* dst_mask */
b34976b6 1860 FALSE), /* pcrel_offset */
5bd4f169
AM		 1861
1862 /* GNU extension to record C++ vtable member usage. */
1863 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1864 0, /* rightshift */
1865 0, /* size (0 = byte, 1 = short, 2 = long) */
1866 0, /* bitsize */
b34976b6 1867 FALSE, /* pc_relative */
5bd4f169
AM		 1868 0, /* bitpos */
1869 complain_overflow_dont, /* complain_on_overflow */
1870 NULL, /* special_function */
1871 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1872 FALSE, /* partial_inplace */
5bd4f169
AM		 1873 0, /* src_mask */
1874 0, /* dst_mask */
b34976b6 1875 FALSE), /* pcrel_offset */
5bd4f169
AM		 1876};
1877
1878\f
1879/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1880 be done. */
1881
1882static void
4ce794b7 1883ppc_howto_init (void)
5bd4f169
AM		 1884{
1885 unsigned int i, type;
1886
1887 for (i = 0;
1888 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1889 i++)
1890 {
1891 type = ppc64_elf_howto_raw[i].type;
1892 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1893 / sizeof (ppc64_elf_howto_table[0])));
1894 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1895 }
1896}
1897
1898static reloc_howto_type *
4ce794b7
AM		 1899ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1900 bfd_reloc_code_real_type code)
5bd4f169 1901{
411e1bfb 1902 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1903
1904 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1905 /* Initialize howto table if needed. */
1906 ppc_howto_init ();
1907
4ce794b7 1908 switch (code)
5bd4f169
AM		 1909 {
1910 default:
4ce794b7 1911 return NULL;
5bd4f169 1912
411e1bfb
AM		 1913 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1914 break;
1915 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1916 break;
1917 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1918 break;
1919 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1920 break;
1921 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1922 break;
1923 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1924 break;
1925 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1926 break;
411e1bfb 1927 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1928 break;
411e1bfb 1929 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1930 break;
411e1bfb 1931 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1932 break;
411e1bfb 1933 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1934 break;
411e1bfb 1935 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1936 break;
411e1bfb 1937 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1938 break;
411e1bfb 1939 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1940 break;
411e1bfb 1941 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1942 break;
411e1bfb 1943 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1944 break;
411e1bfb 1945 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1946 break;
411e1bfb 1947 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1948 break;
411e1bfb 1949 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1950 break;
411e1bfb 1951 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1952 break;
411e1bfb 1953 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1954 break;
411e1bfb 1955 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1956 break;
411e1bfb 1957 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1958 break;
411e1bfb 1959 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1960 break;
411e1bfb 1961 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1962 break;
411e1bfb 1963 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1964 break;
411e1bfb 1965 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1966 break;
411e1bfb 1967 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1968 break;
411e1bfb 1969 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1970 break;
411e1bfb 1971 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1972 break;
411e1bfb 1973 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1974 break;
411e1bfb 1975 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1976 break;
411e1bfb 1977 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1978 break;
411e1bfb 1979 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1980 break;
411e1bfb 1981 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1982 break;
411e1bfb 1983 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1984 break;
411e1bfb 1985 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1986 break;
411e1bfb 1987 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1988 break;
411e1bfb 1989 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1990 break;
411e1bfb 1991 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1992 break;
411e1bfb 1993 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1994 break;
411e1bfb 1995 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1996 break;
411e1bfb 1997 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1998 break;
411e1bfb 1999 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2000 break;
411e1bfb 2001 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2002 break;
411e1bfb 2003 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2004 break;
411e1bfb 2005 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2006 break;
411e1bfb 2007 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2008 break;
411e1bfb 2009 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2010 break;
411e1bfb 2011 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2012 break;
411e1bfb 2013 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2014 break;
411e1bfb 2015 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2016 break;
411e1bfb 2017 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2018 break;
411e1bfb 2019 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2020 break;
411e1bfb 2021 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2022 break;
411e1bfb 2023 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2024 break;
411e1bfb 2025 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2026 break;
411e1bfb 2027 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2028 break;
411e1bfb 2029 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2030 break;
411e1bfb 2031 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2032 break;
411e1bfb 2033 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2034 break;
411e1bfb 2035 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2036 break;
411e1bfb 2037 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2038 break;
411e1bfb 2039 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2040 break;
411e1bfb 2041 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2042 break;
411e1bfb 2043 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2044 break;
411e1bfb
AM		 2045 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2046 break;
2047 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2048 break;
2049 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2050 break;
2051 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2052 break;
2053 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2054 break;
2055 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2056 break;
2057 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2058 break;
2059 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2060 break;
2061 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2062 break;
2063 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2064 break;
2065 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2066 break;
2067 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2068 break;
2069 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2070 break;
2071 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2072 break;
2073 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2074 break;
2075 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2076 break;
2077 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2078 break;
2079 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2080 break;
2081 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2082 break;
2083 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2084 break;
2085 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2086 break;
2087 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2088 break;
2089 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2090 break;
2091 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2092 break;
2093 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2094 break;
2095 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2096 break;
2097 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2098 break;
2099 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2100 break;
2101 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2102 break;
2103 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2104 break;
2105 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2106 break;
2107 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2108 break;
2109 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2110 break;
2111 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2112 break;
2113 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2114 break;
2115 }
2116
4ce794b7 2117 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2118};
2119
157090f7
AM		 2120static reloc_howto_type *
2121ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2122 const char *r_name)
2123{
2124 unsigned int i;
2125
2126 for (i = 0;
2127 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2128 i++)
2129 if (ppc64_elf_howto_raw[i].name != NULL
2130 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2131 return &ppc64_elf_howto_raw[i];
2132
2133 return NULL;
2134}
2135
5bd4f169
AM		 2136/* Set the howto pointer for a PowerPC ELF reloc. */
2137
2138static void
4ce794b7
AM		 2139ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2140 Elf_Internal_Rela *dst)
5bd4f169 2141{
65f38f15
AM		 2142 unsigned int type;
2143
ef60b7ff 2144 /* Initialize howto table if needed. */
5bd4f169 2145 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2146 ppc_howto_init ();
2147
65f38f15 2148 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2149 if (type >= (sizeof (ppc64_elf_howto_table)
2150 / sizeof (ppc64_elf_howto_table[0])))
2151 {
2152 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2153 abfd, (int) type);
2154 type = R_PPC64_NONE;
d0fb9a8d 2155 }
65f38f15 2156 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2157}
2158
04c9666a 2159/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2160
2161static bfd_reloc_status_type
4ce794b7
AM		 2162ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2163 void *data, asection *input_section,
2164 bfd *output_bfd, char **error_message)
5bd4f169 2165{
805fc799
AM		 2166 /* If this is a relocatable link (output_bfd test tells us), just
2167 call the generic function. Any adjustment will be done at final
2168 link time. */
2169 if (output_bfd != NULL)
cedb70c5 2170 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2171 input_section, output_bfd, error_message);
2172
2173 /* Adjust the addend for sign extension of the low 16 bits.
2174 We won't actually be using the low 16 bits, so trashing them
2175 doesn't matter. */
2176 reloc_entry->addend += 0x8000;
2177 return bfd_reloc_continue;
2178}
5bd4f169 2179
2441e016
AM		 2180static bfd_reloc_status_type
2181ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2182 void *data, asection *input_section,
2183 bfd *output_bfd, char **error_message)
2184{
2185 if (output_bfd != NULL)
2186 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2187 input_section, output_bfd, error_message);
2188
699733f6
AM		 2189 if (strcmp (symbol->section->name, ".opd") == 0
2190 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2191 {
2192 bfd_vma dest = opd_entry_value (symbol->section,
2193 symbol->value + reloc_entry->addend,
2194 NULL, NULL);
2195 if (dest != (bfd_vma) -1)
2196 reloc_entry->addend = dest - (symbol->value
2197 + symbol->section->output_section->vma
2198 + symbol->section->output_offset);
2199 }
2200 return bfd_reloc_continue;
2201}
2202
805fc799 2203static bfd_reloc_status_type
4ce794b7
AM		 2204ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2205 void *data, asection *input_section,
2206 bfd *output_bfd, char **error_message)
805fc799
AM		 2207{
2208 long insn;
04c9666a 2209 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2210 bfd_size_type octets;
2211 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2212 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2213
2214 /* If this is a relocatable link (output_bfd test tells us), just
2215 call the generic function. Any adjustment will be done at final
2216 link time. */
5bd4f169 2217 if (output_bfd != NULL)
cedb70c5 2218 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2219 input_section, output_bfd, error_message);
2220
2221 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2222 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2223 insn &= ~(0x01 << 21);
4ce794b7 2224 r_type = reloc_entry->howto->type;
805fc799
AM		 2225 if (r_type == R_PPC64_ADDR14_BRTAKEN
2226 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2227 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2228
2229 if (is_power4)
5bd4f169 2230 {
805fc799
AM		 2231 /* Set 'a' bit. This is 0b00010 in BO field for branch
2232 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2233 for branch on CTR insns (BO == 1a00t or 1a01t). */
2234 if ((insn & (0x14 << 21)) == (0x04 << 21))
2235 insn |= 0x02 << 21;
2236 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2237 insn |= 0x08 << 21;
2238 else
2441e016 2239 goto out;
5bd4f169 2240 }
805fc799
AM		 2241 else
2242 {
2243 bfd_vma target = 0;
2244 bfd_vma from;
5bd4f169 2245
805fc799
AM		 2246 if (!bfd_is_com_section (symbol->section))
2247 target = symbol->value;
2248 target += symbol->section->output_section->vma;
2249 target += symbol->section->output_offset;
2250 target += reloc_entry->addend;
5bd4f169 2251
805fc799
AM		 2252 from = (reloc_entry->address
2253 + input_section->output_offset
2254 + input_section->output_section->vma);
5bd4f169 2255
805fc799
AM		 2256 /* Invert 'y' bit if not the default. */
2257 if ((bfd_signed_vma) (target - from) < 0)
2258 insn ^= 0x01 << 21;
2259 }
4ce794b7 2260 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2261 out:
2262 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2263 input_section, output_bfd, error_message);
805fc799 2264}
5bd4f169 2265
805fc799 2266static bfd_reloc_status_type
4ce794b7
AM		 2267ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2268 void *data, asection *input_section,
2269 bfd *output_bfd, char **error_message)
805fc799
AM		 2270{
2271 /* If this is a relocatable link (output_bfd test tells us), just
2272 call the generic function. Any adjustment will be done at final
2273 link time. */
2274 if (output_bfd != NULL)
cedb70c5 2275 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2276 input_section, output_bfd, error_message);
5bd4f169 2277
805fc799
AM		 2278 /* Subtract the symbol section base address. */
2279 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2280 return bfd_reloc_continue;
2281}
2282
805fc799 2283static bfd_reloc_status_type
4ce794b7
AM		 2284ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2285 void *data, asection *input_section,
2286 bfd *output_bfd, char **error_message)
805fc799
AM		 2287{
2288 /* If this is a relocatable link (output_bfd test tells us), just
2289 call the generic function. Any adjustment will be done at final
2290 link time. */
2291 if (output_bfd != NULL)
cedb70c5 2292 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2293 input_section, output_bfd, error_message);
2294
2295 /* Subtract the symbol section base address. */
2296 reloc_entry->addend -= symbol->section->output_section->vma;
2297
2298 /* Adjust the addend for sign extension of the low 16 bits. */
2299 reloc_entry->addend += 0x8000;
2300 return bfd_reloc_continue;
2301}
2302
2303static bfd_reloc_status_type
4ce794b7
AM		 2304ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2305 void *data, asection *input_section,
2306 bfd *output_bfd, char **error_message)
805fc799
AM		 2307{
2308 bfd_vma TOCstart;
2309
2310 /* If this is a relocatable link (output_bfd test tells us), just
2311 call the generic function. Any adjustment will be done at final
2312 link time. */
2313 if (output_bfd != NULL)
cedb70c5 2314 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2315 input_section, output_bfd, error_message);
2316
2317 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2318 if (TOCstart == 0)
2319 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2320
2321 /* Subtract the TOC base address. */
2322 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2323 return bfd_reloc_continue;
2324}
2325
2326static bfd_reloc_status_type
4ce794b7
AM		 2327ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2328 void *data, asection *input_section,
2329 bfd *output_bfd, char **error_message)
805fc799
AM		 2330{
2331 bfd_vma TOCstart;
2332
2333 /* If this is a relocatable link (output_bfd test tells us), just
2334 call the generic function. Any adjustment will be done at final
2335 link time. */
2336 if (output_bfd != NULL)
cedb70c5 2337 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2338 input_section, output_bfd, error_message);
2339
2340 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2341 if (TOCstart == 0)
2342 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2343
2344 /* Subtract the TOC base address. */
2345 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2346
2347 /* Adjust the addend for sign extension of the low 16 bits. */
2348 reloc_entry->addend += 0x8000;
2349 return bfd_reloc_continue;
2350}
2351
2352static bfd_reloc_status_type
4ce794b7
AM		 2353ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2354 void *data, asection *input_section,
2355 bfd *output_bfd, char **error_message)
805fc799
AM		 2356{
2357 bfd_vma TOCstart;
2358 bfd_size_type octets;
2359
2360 /* If this is a relocatable link (output_bfd test tells us), just
2361 call the generic function. Any adjustment will be done at final
2362 link time. */
2363 if (output_bfd != NULL)
cedb70c5 2364 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2365 input_section, output_bfd, error_message);
2366
2367 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2368 if (TOCstart == 0)
2369 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2370
2371 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2372 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2373 return bfd_reloc_ok;
2374}
2375
2376static bfd_reloc_status_type
4ce794b7
AM		 2377ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2378 void *data, asection *input_section,
2379 bfd *output_bfd, char **error_message)
805fc799
AM		 2380{
2381 /* If this is a relocatable link (output_bfd test tells us), just
2382 call the generic function. Any adjustment will be done at final
2383 link time. */
2384 if (output_bfd != NULL)
cedb70c5 2385 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2386 input_section, output_bfd, error_message);
2387
2388 if (error_message != NULL)
2389 {
2390 static char buf[60];
2391 sprintf (buf, "generic linker can't handle %s",
2392 reloc_entry->howto->name);
2393 *error_message = buf;
2394 }
2395 return bfd_reloc_dangerous;
2396}
2397
e717da7e
AM		 2398struct ppc64_elf_obj_tdata
2399{
2400 struct elf_obj_tdata elf;
2401
2402 /* Shortcuts to dynamic linker sections. */
2403 asection *got;
2404 asection *relgot;
2405
b3fac117
AM		 2406 /* Used during garbage collection. We attach global symbols defined
2407 on removed .opd entries to this section so that the sym is removed. */
2408 asection *deleted_section;
81688140 2409
e717da7e
AM		 2410 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2411 sections means we potentially need one of these for each input bfd. */
2412 union {
2413 bfd_signed_vma refcount;
2414 bfd_vma offset;
2415 } tlsld_got;
8860955f
AM		 2416
2417 /* A copy of relocs before they are modified for --emit-relocs. */
2418 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2419};
2420
2421#define ppc64_elf_tdata(bfd) \
2422 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2423
2424#define ppc64_tlsld_got(bfd) \
2425 (&ppc64_elf_tdata (bfd)->tlsld_got)
2426
2427/* Override the generic function because we store some extras. */
2428
2429static bfd_boolean
2430ppc64_elf_mkobject (bfd *abfd)
2431{
e717da7e 2432 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 2433 {
2434 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2435 abfd->tdata.any = bfd_zalloc (abfd, amt);
2436 if (abfd->tdata.any == NULL)
2437 return FALSE;
2438 }
2439 return bfd_elf_mkobject (abfd);
e717da7e
AM		 2440}
2441
ee75fd95
AM		 2442/* Return 1 if target is one of ours. */
2443
7b53ace3 2444static bfd_boolean
ee75fd95 2445is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2446{
2447 extern const bfd_target bfd_elf64_powerpc_vec;
2448 extern const bfd_target bfd_elf64_powerpcle_vec;
2449
2450 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2451}
2452
feee612b
AM		 2453/* Fix bad default arch selected for a 64 bit input bfd when the
2454 default is 32 bit. */
2455
b34976b6 2456static bfd_boolean
4ce794b7 2457ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2458{
2459 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2460 {
2461 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2462
2463 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2464 {
2465 /* Relies on arch after 32 bit default being 64 bit default. */
2466 abfd->arch_info = abfd->arch_info->next;
2467 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2468 }
2469 }
b34976b6 2470 return TRUE;
feee612b
AM		 2471}
2472
d37c89e5
AM		 2473/* Support for core dump NOTE sections. */
2474
2475static bfd_boolean
2476ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2477{
eea6121a 2478 size_t offset, size;
d37c89e5
AM		 2479
2480 if (note->descsz != 504)
2481 return FALSE;
2482
2483 /* pr_cursig */
2484 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2485
2486 /* pr_pid */
2487 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2488
2489 /* pr_reg */
2490 offset = 112;
eea6121a 2491 size = 384;
d37c89e5
AM		 2492
2493 /* Make a ".reg/999" section. */
2494 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2495 size, note->descpos + offset);
d37c89e5
AM		 2496}
2497
2498static bfd_boolean
2499ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2500{
2501 if (note->descsz != 136)
2502 return FALSE;
2503
2504 elf_tdata (abfd)->core_program
2505 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2506 elf_tdata (abfd)->core_command
2507 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2508
2509 return TRUE;
2510}
2511
183e98be
AM		 2512static char *
2513ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2514 ...)
2515{
2516 switch (note_type)
2517 {
2518 default:
2519 return NULL;
2520
2521 case NT_PRPSINFO:
2522 {
2523 char data[136];
2524 va_list ap;
2525
2526 va_start (ap, note_type);
2527 memset (data, 0, 40);
2528 strncpy (data + 40, va_arg (ap, const char *), 16);
2529 strncpy (data + 56, va_arg (ap, const char *), 80);
2530 va_end (ap);
2531 return elfcore_write_note (abfd, buf, bufsiz,
2532 "CORE", note_type, data, sizeof (data));
2533 }
2534
2535 case NT_PRSTATUS:
2536 {
2537 char data[504];
2538 va_list ap;
2539 long pid;
2540 int cursig;
2541 const void *greg;
2542
2543 va_start (ap, note_type);
2544 memset (data, 0, 112);
2545 pid = va_arg (ap, long);
2546 bfd_put_32 (abfd, pid, data + 32);
2547 cursig = va_arg (ap, int);
2548 bfd_put_16 (abfd, cursig, data + 12);
2549 greg = va_arg (ap, const void *);
2550 memcpy (data + 112, greg, 384);
2551 memset (data + 496, 0, 8);
2552 va_end (ap);
2553 return elfcore_write_note (abfd, buf, bufsiz,
2554 "CORE", note_type, data, sizeof (data));
2555 }
2556 }
2557}
2558
5bd4f169
AM		 2559/* Merge backend specific data from an object file to the output
2560 object file when linking. */
2f6d9989 2561
b34976b6 2562static bfd_boolean
4ce794b7 2563ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2564{
5bd4f169
AM		 2565 /* Check if we have the same endianess. */
2566 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2567 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2568 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2569 {
2570 const char *msg;
2571
2572 if (bfd_big_endian (ibfd))
d003868e 2573 msg = _("%B: compiled for a big endian system "
4ce794b7 2574 "and target is little endian");
5bd4f169 2575 else
d003868e 2576 msg = _("%B: compiled for a little endian system "
4ce794b7 2577 "and target is big endian");
5bd4f169 2578
d003868e 2579 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2580
2581 bfd_set_error (bfd_error_wrong_format);
b34976b6 2582 return FALSE;
5bd4f169
AM		 2583 }
2584
b34976b6 2585 return TRUE;
5bd4f169 2586}
f0abc2a1 2587
5d35169e
AM		 2588/* Add extra PPC sections. */
2589
b35d266b 2590static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2591{
0112cd26
NC		 2592 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2593 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2594 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2595 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2596 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2597 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2598 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2599};
2600
7c8fe5c4
AM		 2601enum _ppc64_sec_type {
2602 sec_normal = 0,
2603 sec_opd = 1,
2604 sec_toc = 2
2605};
2606
f0abc2a1
AM		 2607struct _ppc64_elf_section_data
2608{
2609 struct bfd_elf_section_data elf;
411e1bfb
AM		 2610
2611 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2612 union
2613 {
411e1bfb 2614 /* Points to the function code section for local opd entries. */
7c8fe5c4 2615 asection **opd_func_sec;
411e1bfb 2616 /* After editing .opd, adjust references to opd local syms. */
7c8fe5c4
AM		 2617 long *opd_adjust;
2618
2619 /* An array for toc sections, indexed by offset/8.
2620 Specifies the relocation symbol index used at a given toc offset. */
2621 unsigned *t_symndx;
2622 } u;
2623
2624 enum _ppc64_sec_type sec_type:2;
411e1bfb 2625
7c8fe5c4
AM		 2626 /* Flag set when small branches are detected. Used to
2627 select suitable defaults for the stub group size. */
2628 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2629};
2630
2631#define ppc64_elf_section_data(sec) \
411e1bfb 2632 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2633
2634static bfd_boolean
4ce794b7 2635ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2636{
f592407e
AM		 2637 if (!sec->used_by_bfd)
2638 {
2639 struct _ppc64_elf_section_data *sdata;
2640 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2641
f592407e
AM		 2642 sdata = bfd_zalloc (abfd, amt);
2643 if (sdata == NULL)
2644 return FALSE;
2645 sec->used_by_bfd = sdata;
2646 }
f0abc2a1
AM		 2647
2648 return _bfd_elf_new_section_hook (abfd, sec);
2649}
4025353c
AM		 2650
2651static void *
2652get_opd_info (asection * sec)
2653{
2654 if (sec != NULL
2655 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4
AM		 2656 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2657 return ppc64_elf_section_data (sec)->u.opd_adjust;
4025353c
AM		 2658 return NULL;
2659}
90e3cdf2
JJ		 2660\f
2661/* Parameters for the qsort hook. */
2662static asection *synthetic_opd;
2663static bfd_boolean synthetic_relocatable;
2664
699733f6 2665/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2666
2667static int
2668compare_symbols (const void *ap, const void *bp)
2669{
2670 const asymbol *a = * (const asymbol **) ap;
2671 const asymbol *b = * (const asymbol **) bp;
2672
699733f6
AM		 2673 /* Section symbols first. */
2674 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2675 return -1;
699733f6 2676 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2677 return 1;
2678
699733f6 2679 /* then .opd symbols. */
90e3cdf2
JJ		 2680 if (a->section == synthetic_opd && b->section != synthetic_opd)
2681 return -1;
2682 if (a->section != synthetic_opd && b->section == synthetic_opd)
2683 return 1;
2684
699733f6 2685 /* then other code symbols. */
90e3cdf2
JJ		 2686 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2687 == (SEC_CODE | SEC_ALLOC)
2688 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2689 != (SEC_CODE | SEC_ALLOC))
2690 return -1;
2691
2692 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2693 != (SEC_CODE | SEC_ALLOC)
2694 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2695 == (SEC_CODE | SEC_ALLOC))
2696 return 1;
2697
2698 if (synthetic_relocatable)
2699 {
2700 if (a->section->id < b->section->id)
2701 return -1;
2702
2703 if (a->section->id > b->section->id)
2704 return 1;
2705 }
2706
2707 if (a->value + a->section->vma < b->value + b->section->vma)
2708 return -1;
2709
2710 if (a->value + a->section->vma > b->value + b->section->vma)
2711 return 1;
2712
4d35a0aa
AM		 2713 /* For syms with the same value, prefer strong dynamic global function
2714 syms over other syms. */
2715 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2716 return -1;
2717
2718 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2719 return 1;
2720
2721 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2722 return -1;
2723
2724 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2725 return 1;
2726
2727 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2728 return -1;
2729
2730 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2731 return 1;
2732
2733 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2734 return -1;
2735
2736 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2737 return 1;
2738
90e3cdf2
JJ		 2739 return 0;
2740}
2741
699733f6 2742/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2743
699733f6
AM		 2744static asymbol *
2745sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2746{
699733f6 2747 long mid;
90e3cdf2 2748
699733f6
AM		 2749 if (id == -1)
2750 {
2751 while (lo < hi)
2752 {
2753 mid = (lo + hi) >> 1;
2754 if (syms[mid]->value + syms[mid]->section->vma < value)
2755 lo = mid + 1;
2756 else if (syms[mid]->value + syms[mid]->section->vma > value)
2757 hi = mid;
2758 else
2759 return syms[mid];
2760 }
2761 }
2762 else
2763 {
2764 while (lo < hi)
2765 {
2766 mid = (lo + hi) >> 1;
2767 if (syms[mid]->section->id < id)
2768 lo = mid + 1;
2769 else if (syms[mid]->section->id > id)
2770 hi = mid;
2771 else if (syms[mid]->value < value)
2772 lo = mid + 1;
2773 else if (syms[mid]->value > value)
2774 hi = mid;
2775 else
2776 return syms[mid];
2777 }
2778 }
2779 return NULL;
90e3cdf2
JJ		 2780}
2781
699733f6
AM		 2782/* Create synthetic symbols, effectively restoring "dot-symbol" function
2783 entry syms. */
90e3cdf2
JJ		 2784
2785static long
a7535cf3
AM		 2786ppc64_elf_get_synthetic_symtab (bfd *abfd,
2787 long static_count, asymbol **static_syms,
2788 long dyn_count, asymbol **dyn_syms,
c9727e01 2789 asymbol **ret)
90e3cdf2
JJ		 2790{
2791 asymbol *s;
699733f6
AM		 2792 long i;
2793 long count;
90e3cdf2 2794 char *names;
a7535cf3 2795 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2796 asection *opd;
90e3cdf2 2797 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2798 asymbol **syms;
90e3cdf2
JJ		 2799
2800 *ret = NULL;
2801
2802 opd = bfd_get_section_by_name (abfd, ".opd");
2803 if (opd == NULL)
2804 return 0;
2805
a7535cf3 2806 symcount = static_count;
c9727e01 2807 if (!relocatable)
a7535cf3 2808 symcount += dyn_count;
90e3cdf2 2809 if (symcount == 0)
c9727e01 2810 return 0;
90e3cdf2 2811
a7535cf3
AM		 2812 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2813 if (syms == NULL)
7356fed5 2814 return -1;
a7535cf3
AM		 2815
2816 if (!relocatable && static_count != 0 && dyn_count != 0)
2817 {
2818 /* Use both symbol tables. */
2819 memcpy (syms, static_syms, static_count * sizeof (*syms));
2820 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2821 }
2822 else if (!relocatable && static_count == 0)
2823 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2824 else
2825 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2826
90e3cdf2
JJ		 2827 synthetic_opd = opd;
2828 synthetic_relocatable = relocatable;
595da8c5 2829 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2830
c9727e01
AM		 2831 if (!relocatable && symcount > 1)
2832 {
2833 long j;
2834 /* Trim duplicate syms, since we may have merged the normal and
2835 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2836 different values, so trim any with the same value. */
c9727e01
AM		 2837 for (i = 1, j = 1; i < symcount; ++i)
2838 if (syms[i - 1]->value + syms[i - 1]->section->vma
2839 != syms[i]->value + syms[i]->section->vma)
2840 syms[j++] = syms[i];
2841 symcount = j;
2842 }
2843
699733f6
AM		 2844 i = 0;
2845 if (syms[i]->section == opd)
2846 ++i;
2847 codesecsym = i;
90e3cdf2 2848
699733f6
AM		 2849 for (; i < symcount; ++i)
2850 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2851 != (SEC_CODE | SEC_ALLOC))
2852 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2853 break;
2854 codesecsymend = i;
90e3cdf2 2855
699733f6
AM		 2856 for (; i < symcount; ++i)
2857 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2858 break;
2859 secsymend = i;
90e3cdf2 2860
699733f6
AM		 2861 for (; i < symcount; ++i)
2862 if (syms[i]->section != opd)
2863 break;
2864 opdsymend = i;
90e3cdf2 2865
699733f6
AM		 2866 for (; i < symcount; ++i)
2867 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2868 != (SEC_CODE | SEC_ALLOC))
2869 break;
2870 symcount = i;
2871
c9727e01 2872 count = 0;
699733f6 2873 if (opdsymend == secsymend)
c9727e01 2874 goto done;
90e3cdf2 2875
699733f6 2876 if (relocatable)
90e3cdf2 2877 {
699733f6
AM		 2878 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2879 arelent *r;
2880 size_t size;
2881 long relcount;
90e3cdf2 2882
699733f6 2883 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2884 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2885 if (relcount == 0)
c9727e01 2886 goto done;
90e3cdf2 2887
7356fed5
AM		 2888 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2889 {
2890 count = -1;
2891 goto done;
2892 }
2893
699733f6 2894 size = 0;
595da8c5 2895 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2896 {
2897 asymbol *sym;
90e3cdf2 2898
595da8c5 2899 while (r < opd->relocation + relcount
699733f6
AM		 2900 && r->address < syms[i]->value + opd->vma)
2901 ++r;
90e3cdf2 2902
595da8c5 2903 if (r == opd->relocation + relcount)
699733f6 2904 break;
90e3cdf2 2905
699733f6
AM		 2906 if (r->address != syms[i]->value + opd->vma)
2907 continue;
90e3cdf2 2908
699733f6
AM		 2909 if (r->howto->type != R_PPC64_ADDR64)
2910 continue;
90e3cdf2 2911
699733f6
AM		 2912 sym = *r->sym_ptr_ptr;
2913 if (!sym_exists_at (syms, opdsymend, symcount,
2914 sym->section->id, sym->value + r->addend))
2915 {
2916 ++count;
2917 size += sizeof (asymbol);
2918 size += strlen (syms[i]->name) + 2;
2919 }
2920 }
90e3cdf2 2921
699733f6
AM		 2922 s = *ret = bfd_malloc (size);
2923 if (s == NULL)
2924 {
7356fed5 2925 count = -1;
c9727e01 2926 goto done;
699733f6 2927 }
90e3cdf2 2928
699733f6 2929 names = (char *) (s + count);
90e3cdf2 2930
595da8c5 2931 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2932 {
699733f6 2933 asymbol *sym;
90e3cdf2 2934
595da8c5 2935 while (r < opd->relocation + relcount
699733f6
AM		 2936 && r->address < syms[i]->value + opd->vma)
2937 ++r;
90e3cdf2 2938
595da8c5 2939 if (r == opd->relocation + relcount)
699733f6
AM		 2940 break;
2941
2942 if (r->address != syms[i]->value + opd->vma)
2943 continue;
2944
2945 if (r->howto->type != R_PPC64_ADDR64)
2946 continue;
90e3cdf2 2947
699733f6
AM		 2948 sym = *r->sym_ptr_ptr;
2949 if (!sym_exists_at (syms, opdsymend, symcount,
2950 sym->section->id, sym->value + r->addend))
2951 {
2952 size_t len;
2953
2954 *s = *syms[i];
2955 s->section = sym->section;
2956 s->value = sym->value + r->addend;
2957 s->name = names;
2958 *names++ = '.';
2959 len = strlen (syms[i]->name);
2960 memcpy (names, syms[i]->name, len + 1);
2961 names += len + 1;
2962 s++;
2963 }
2964 }
2965 }
2966 else
90e3cdf2 2967 {
699733f6
AM		 2968 bfd_byte *contents;
2969 size_t size;
90e3cdf2 2970
699733f6
AM		 2971 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2972 {
2973 if (contents)
c9727e01
AM		 2974 {
2975 free_contents_and_exit:
2976 free (contents);
2977 }
7356fed5 2978 count = -1;
c9727e01 2979 goto done;
699733f6 2980 }
90e3cdf2 2981
699733f6
AM		 2982 size = 0;
2983 for (i = secsymend; i < opdsymend; ++i)
2984 {
2985 bfd_vma ent;
90e3cdf2 2986
699733f6
AM		 2987 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2988 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2989 {
2990 ++count;
2991 size += sizeof (asymbol);
2992 size += strlen (syms[i]->name) + 2;
2993 }
2994 }
90e3cdf2 2995
699733f6
AM		 2996 s = *ret = bfd_malloc (size);
2997 if (s == NULL)
7356fed5 2998 goto free_contents_and_exit;
90e3cdf2 2999
699733f6 3000 names = (char *) (s + count);
90e3cdf2 3001
699733f6 3002 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3003 {
699733f6 3004 bfd_vma ent;
90e3cdf2 3005
699733f6
AM		 3006 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3007 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3008 {
c9727e01 3009 long lo, hi;
699733f6 3010 size_t len;
c9727e01 3011 asection *sec = abfd->sections;
90e3cdf2 3012
699733f6
AM		 3013 *s = *syms[i];
3014 lo = codesecsym;
3015 hi = codesecsymend;
3016 while (lo < hi)
3017 {
c9727e01 3018 long mid = (lo + hi) >> 1;
699733f6
AM		 3019 if (syms[mid]->section->vma < ent)
3020 lo = mid + 1;
3021 else if (syms[mid]->section->vma > ent)
3022 hi = mid;
3023 else
c9727e01
AM		 3024 {
3025 sec = syms[mid]->section;
3026 break;
3027 }
699733f6
AM		 3028 }
3029
c9727e01 3030 if (lo >= hi && lo > codesecsym)
699733f6 3031 sec = syms[lo - 1]->section;
699733f6
AM		 3032
3033 for (; sec != NULL; sec = sec->next)
3034 {
3035 if (sec->vma > ent)
3036 break;
3037 if ((sec->flags & SEC_ALLOC) == 0
3038 || (sec->flags & SEC_LOAD) == 0)
3039 break;
3040 if ((sec->flags & SEC_CODE) != 0)
3041 s->section = sec;
3042 }
3043 s->value = ent - s->section->vma;
3044 s->name = names;
3045 *names++ = '.';
3046 len = strlen (syms[i]->name);
3047 memcpy (names, syms[i]->name, len + 1);
3048 names += len + 1;
3049 s++;
90e3cdf2 3050 }
90e3cdf2 3051 }
699733f6 3052 free (contents);
90e3cdf2
JJ		 3053 }
3054
c9727e01 3055 done:
a7535cf3 3056 free (syms);
90e3cdf2
JJ		 3057 return count;
3058}
5bd4f169 3059\f
65f38f15
AM		 3060/* The following functions are specific to the ELF linker, while
3061 functions above are used generally. Those named ppc64_elf_* are
3062 called by the main ELF linker code. They appear in this file more
3063 or less in the order in which they are called. eg.
3064 ppc64_elf_check_relocs is called early in the link process,
3065 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3066 called.
3067
3068 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3069 functions have both a function code symbol and a function descriptor
3070 symbol. A call to foo in a relocatable object file looks like:
3071
3072 . .text
3073 . x:
3074 . bl .foo
3075 . nop
3076
3077 The function definition in another object file might be:
3078
3079 . .section .opd
3080 . foo: .quad .foo
3081 . .quad .TOC.@tocbase
3082 . .quad 0
3083 .
3084 . .text
3085 . .foo: blr
3086
3087 When the linker resolves the call during a static link, the branch
3088 unsurprisingly just goes to .foo and the .opd information is unused.
3089 If the function definition is in a shared library, things are a little
3090 different: The call goes via a plt call stub, the opd information gets
3091 copied to the plt, and the linker patches the nop.
3092
3093 . x:
3094 . bl .foo_stub
3095 . ld 2,40(1)
3096 .
3097 .
3098 . .foo_stub:
3099 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3100 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3101 . std 2,40(1) # this is the general idea
3102 . ld 11,0(12)
3103 . ld 2,8(12)
3104 . mtctr 11
3105 . ld 11,16(12)
3106 . bctr
3107 .
3108 . .section .plt
3109 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3110
3111 The "reloc ()" notation is supposed to indicate that the linker emits
3112 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3113 copying.
3114
3115 What are the difficulties here? Well, firstly, the relocations
3116 examined by the linker in check_relocs are against the function code
3117 sym .foo, while the dynamic relocation in the plt is emitted against
3118 the function descriptor symbol, foo. Somewhere along the line, we need
3119 to carefully copy dynamic link information from one symbol to the other.
3120 Secondly, the generic part of the elf linker will make .foo a dynamic
3121 symbol as is normal for most other backends. We need foo dynamic
3122 instead, at least for an application final link. However, when
3123 creating a shared library containing foo, we need to have both symbols
3124 dynamic so that references to .foo are satisfied during the early
3125 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3126 definition from some other object, eg. a static library.
3127
3128 Update: As of August 2004, we support a new convention. Function
3129 calls may use the function descriptor symbol, ie. "bl foo". This
3130 behaves exactly as "bl .foo". */
65f38f15
AM		 3131
3132/* The linker needs to keep track of the number of relocs that it
3133 decides to copy as dynamic relocs in check_relocs for each symbol.
3134 This is so that it can later discard them if they are found to be
3135 unnecessary. We store the information in a field extending the
3136 regular ELF linker hash table. */
3137
3138struct ppc_dyn_relocs
3139{
3140 struct ppc_dyn_relocs *next;
3141
3142 /* The input section of the reloc. */
3143 asection *sec;
3144
3145 /* Total number of relocs copied for the input section. */
3146 bfd_size_type count;
3147
3148 /* Number of pc-relative relocs copied for the input section. */
3149 bfd_size_type pc_count;
3150};
3151
411e1bfb
AM		 3152/* Track GOT entries needed for a given symbol. We might need more
3153 than one got entry per symbol. */
3154struct got_entry
3155{
3156 struct got_entry *next;
3157
e7b938ca 3158 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3159 bfd_vma addend;
3160
e717da7e
AM		 3161 /* Unlike other ELF targets, we use separate GOT entries for the same
3162 symbol referenced from different input files. This is to support
3163 automatic multiple TOC/GOT sections, where the TOC base can vary
3164 from one input file to another.
3165
3166 Point to the BFD owning this GOT entry. */
3167 bfd *owner;
3168
3169 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3170 TLS_TPREL or TLS_DTPREL for tls entries. */
3171 char tls_type;
3172
e7b938ca 3173 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3174 union
3175 {
3176 bfd_signed_vma refcount;
3177 bfd_vma offset;
3178 } got;
411e1bfb
AM		 3179};
3180
3181/* The same for PLT. */
3182struct plt_entry
3183{
3184 struct plt_entry *next;
3185
3186 bfd_vma addend;
3187
3188 union
3189 {
3190 bfd_signed_vma refcount;
3191 bfd_vma offset;
3192 } plt;
3193};
3194
65f38f15 3195/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3196 selects those that must be copied when linking a shared library,
3197 even when the symbol is local. */
65f38f15 3198
411e1bfb 3199#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3200 ((RTYPE) != R_PPC64_REL32 \
3201 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3202 && (RTYPE) != R_PPC64_REL30)
65f38f15 3203
f4656909
AM		 3204/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3205 copying dynamic variables from a shared lib into an app's dynbss
3206 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3207 shared lib. With code that gcc generates, it's vital that this be
3208 enabled; In the PowerPC64 ABI, the address of a function is actually
3209 the address of a function descriptor, which resides in the .opd
3210 section. gcc uses the descriptor directly rather than going via the
3211 GOT as some other ABI's do, which means that initialized function
3212 pointers must reference the descriptor. Thus, a function pointer
3213 initialized to the address of a function in a shared library will
3214 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3215 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3216 presents a problem as a plt entry for that function is also
3217 initialized from the function descriptor symbol and the copy reloc
3218 may not be initialized first. */
a23b6845 3219#define ELIMINATE_COPY_RELOCS 1
f4656909 3220
721956f4
AM		 3221/* Section name for stubs is the associated section name plus this
3222 string. */
3223#define STUB_SUFFIX ".stub"
3224
3225/* Linker stubs.
3226 ppc_stub_long_branch:
3227 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3228 destination, but a 24 bit branch in a stub section will reach.
3229 . b dest
3230
3231 ppc_stub_plt_branch:
3232 Similar to the above, but a 24 bit branch in the stub section won't
3233 reach its destination.
87e226ce
AM		 3234 . addis %r12,%r2,xxx@toc@ha
3235 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3236 . mtctr %r11
3237 . bctr
3238
3239 ppc_stub_plt_call:
2c66dc6c
AM		 3240 Used to call a function in a shared library. If it so happens that
3241 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3242 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3243 . addis %r12,%r2,xxx@toc@ha
721956f4 3244 . std %r2,40(%r1)
87e226ce 3245 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3246 . mtctr %r11
ac2df442 3247 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3248 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3249 . bctr
ad8e1ba5
AM		 3250
3251 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3252 code to adjust the value and save r2 to support multiple toc sections.
3253 A ppc_stub_long_branch with an r2 offset looks like:
3254 . std %r2,40(%r1)
3255 . addis %r2,%r2,off@ha
3256 . addi %r2,%r2,off@l
3257 . b dest
3258
3259 A ppc_stub_plt_branch with an r2 offset looks like:
3260 . std %r2,40(%r1)
3261 . addis %r12,%r2,xxx@toc@ha
3262 . ld %r11,xxx@toc@l(%r12)
3263 . addis %r2,%r2,off@ha
3264 . addi %r2,%r2,off@l
3265 . mtctr %r11
3266 . bctr
ac2df442
AM		 3267
3268 In cases where the "addis" instruction would add zero, the "addis" is
3269 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3270*/
3271
3272enum ppc_stub_type {
3273 ppc_stub_none,
3274 ppc_stub_long_branch,
ad8e1ba5 3275 ppc_stub_long_branch_r2off,
721956f4 3276 ppc_stub_plt_branch,
ad8e1ba5 3277 ppc_stub_plt_branch_r2off,
721956f4
AM		 3278 ppc_stub_plt_call
3279};
3280
3281struct ppc_stub_hash_entry {
3282
3283 /* Base hash table entry structure. */
3284 struct bfd_hash_entry root;
3285
ad8e1ba5
AM		 3286 enum ppc_stub_type stub_type;
3287
721956f4
AM		 3288 /* The stub section. */
3289 asection *stub_sec;
3290
3291 /* Offset within stub_sec of the beginning of this stub. */
3292 bfd_vma stub_offset;
3293
3294 /* Given the symbol's value and its section we can determine its final
3295 value when building the stubs (so the stub knows where to jump. */
3296 bfd_vma target_value;
3297 asection *target_section;
3298
721956f4
AM		 3299 /* The symbol table entry, if any, that this was derived from. */
3300 struct ppc_link_hash_entry *h;
3301
411e1bfb
AM		 3302 /* And the reloc addend that this was derived from. */
3303 bfd_vma addend;
3304
721956f4
AM		 3305 /* Where this stub is being called from, or, in the case of combined
3306 stub sections, the first input section in the group. */
3307 asection *id_sec;
3308};
3309
3310struct ppc_branch_hash_entry {
3311
3312 /* Base hash table entry structure. */
3313 struct bfd_hash_entry root;
3314
c456f082 3315 /* Offset within branch lookup table. */
721956f4
AM		 3316 unsigned int offset;
3317
3318 /* Generation marker. */
3319 unsigned int iter;
3320};
65f38f15
AM		 3321
3322struct ppc_link_hash_entry
3323{
3324 struct elf_link_hash_entry elf;
3325
b3fac117
AM		 3326 union {
3327 /* A pointer to the most recently used stub hash entry against this
3328 symbol. */
3329 struct ppc_stub_hash_entry *stub_cache;
3330
3331 /* A pointer to the next symbol starting with a '.' */
3332 struct ppc_link_hash_entry *next_dot_sym;
3333 } u;
721956f4 3334
65f38f15
AM		 3335 /* Track dynamic relocs copied for this symbol. */
3336 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3337
721956f4 3338 /* Link between function code and descriptor symbols. */
34814b9f 3339 struct ppc_link_hash_entry *oh;
721956f4 3340
e86ce104
AM		 3341 /* Flag function code and descriptor symbols. */
3342 unsigned int is_func:1;
3343 unsigned int is_func_descriptor:1;
908b32fc 3344 unsigned int fake:1;
411e1bfb 3345
c5614fa4
AM		 3346 /* Whether global opd/toc sym has been adjusted or not.
3347 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3348 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3349 unsigned int adjust_done:1;
3350
99877b66
AM		 3351 /* Set if we twiddled this symbol to weak at some stage. */
3352 unsigned int was_undefined:1;
3353
411e1bfb 3354 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3355 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3356 corresponding relocs are encountered during check_relocs.
3357 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3358 indicate the corresponding GOT entry type is not needed.
3359 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3360 a TPREL one. We use a separate flag rather than setting TPREL
3361 just for convenience in distinguishing the two cases. */
3362#define TLS_GD 1 /* GD reloc. */
3363#define TLS_LD 2 /* LD reloc. */
3364#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3365#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3366#define TLS_TLS 16 /* Any TLS reloc. */
3367#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3368#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3369 char tls_mask;
65f38f15
AM		 3370};
3371
3372/* ppc64 ELF linker hash table. */
3373
3374struct ppc_link_hash_table
3375{
3376 struct elf_link_hash_table elf;
3377
721956f4
AM		 3378 /* The stub hash table. */
3379 struct bfd_hash_table stub_hash_table;
3380
3381 /* Another hash table for plt_branch stubs. */
3382 struct bfd_hash_table branch_hash_table;
3383
3384 /* Linker stub bfd. */
3385 bfd *stub_bfd;
3386
3387 /* Linker call-backs. */
4ce794b7
AM		 3388 asection * (*add_stub_section) (const char *, asection *);
3389 void (*layout_sections_again) (void);
721956f4
AM		 3390
3391 /* Array to keep track of which stub sections have been created, and
3392 information on stub grouping. */
3393 struct map_stub {
3394 /* This is the section to which stubs in the group will be attached. */
3395 asection *link_sec;
3396 /* The stub section. */
3397 asection *stub_sec;
ad8e1ba5
AM		 3398 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3399 bfd_vma toc_off;
721956f4
AM		 3400 } *stub_group;
3401
ad8e1ba5
AM		 3402 /* Temp used when calculating TOC pointers. */
3403 bfd_vma toc_curr;
3404
8f3bab57
AM		 3405 /* Highest input section id. */
3406 int top_id;
3407
734b6cf9
AM		 3408 /* Highest output section index. */
3409 int top_index;
3410
b3fac117
AM		 3411 /* Used when adding symbols. */
3412 struct ppc_link_hash_entry *dot_syms;
3413
734b6cf9
AM		 3414 /* List of input sections for each output section. */
3415 asection **input_list;
721956f4 3416
65f38f15 3417 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3418 asection *got;
4ce794b7
AM		 3419 asection *plt;
3420 asection *relplt;
3421 asection *dynbss;
3422 asection *relbss;
3423 asection *glink;
82bd7b59 3424 asection *sfpr;
4ce794b7
AM		 3425 asection *brlt;
3426 asection *relbrlt;
ec338859 3427
8387904d
AM		 3428 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3429 struct ppc_link_hash_entry *tls_get_addr;
3430 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3431
9b5ecbd0
AM		 3432 /* Statistics. */
3433 unsigned long stub_count[ppc_stub_plt_call];
3434
ee75fd95
AM		 3435 /* Number of stubs against global syms. */
3436 unsigned long stub_globals;
3437
ad8e1ba5 3438 /* Set if we should emit symbols for stubs. */
99877b66 3439 unsigned int emit_stub_syms:1;
ad8e1ba5 3440
4c52953f
AM		 3441 /* Support for multiple toc sections. */
3442 unsigned int no_multi_toc:1;
3443 unsigned int multi_toc_needed:1;
3444
5d1634d7 3445 /* Set on error. */
99877b66 3446 unsigned int stub_error:1;
721956f4 3447
99877b66
AM		 3448 /* Temp used by ppc64_elf_check_directives. */
3449 unsigned int twiddled_syms:1;
721956f4
AM		 3450
3451 /* Incremented every time we size stubs. */
3452 unsigned int stub_iteration;
5d1634d7 3453
ec338859
AM		 3454 /* Small local sym to section mapping cache. */
3455 struct sym_sec_cache sym_sec;
65f38f15
AM		 3456};
3457
4c52953f
AM		 3458/* Rename some of the generic section flags to better document how they
3459 are used here. */
3460#define has_toc_reloc has_gp_reloc
3461#define makes_toc_func_call need_finalize_relax
3462#define call_check_in_progress reloc_done
3463
65f38f15
AM		 3464/* Get the ppc64 ELF linker hash table from a link_info structure. */
3465
3466#define ppc_hash_table(p) \
3467 ((struct ppc_link_hash_table *) ((p)->hash))
3468
721956f4
AM		 3469#define ppc_stub_hash_lookup(table, string, create, copy) \
3470 ((struct ppc_stub_hash_entry *) \
3471 bfd_hash_lookup ((table), (string), (create), (copy)))
3472
3473#define ppc_branch_hash_lookup(table, string, create, copy) \
3474 ((struct ppc_branch_hash_entry *) \
3475 bfd_hash_lookup ((table), (string), (create), (copy)))
3476
3477/* Create an entry in the stub hash table. */
3478
3479static struct bfd_hash_entry *
4ce794b7
AM		 3480stub_hash_newfunc (struct bfd_hash_entry *entry,
3481 struct bfd_hash_table *table,
3482 const char *string)
721956f4
AM		 3483{
3484 /* Allocate the structure if it has not already been allocated by a
3485 subclass. */
3486 if (entry == NULL)
3487 {
3488 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3489 if (entry == NULL)
3490 return entry;
3491 }
3492
3493 /* Call the allocation method of the superclass. */
3494 entry = bfd_hash_newfunc (entry, table, string);
3495 if (entry != NULL)
3496 {
3497 struct ppc_stub_hash_entry *eh;
3498
3499 /* Initialize the local fields. */
3500 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3501 eh->stub_type = ppc_stub_none;
721956f4
AM		 3502 eh->stub_sec = NULL;
3503 eh->stub_offset = 0;
3504 eh->target_value = 0;
3505 eh->target_section = NULL;
721956f4
AM		 3506 eh->h = NULL;
3507 eh->id_sec = NULL;
3508 }
3509
3510 return entry;
3511}
3512
3513/* Create an entry in the branch hash table. */
3514
3515static struct bfd_hash_entry *
4ce794b7
AM		 3516branch_hash_newfunc (struct bfd_hash_entry *entry,
3517 struct bfd_hash_table *table,
3518 const char *string)
721956f4
AM		 3519{
3520 /* Allocate the structure if it has not already been allocated by a
3521 subclass. */
3522 if (entry == NULL)
3523 {
3524 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3525 if (entry == NULL)
3526 return entry;
3527 }
3528
3529 /* Call the allocation method of the superclass. */
3530 entry = bfd_hash_newfunc (entry, table, string);
3531 if (entry != NULL)
3532 {
3533 struct ppc_branch_hash_entry *eh;
3534
3535 /* Initialize the local fields. */
3536 eh = (struct ppc_branch_hash_entry *) entry;
3537 eh->offset = 0;
3538 eh->iter = 0;
3539 }
3540
3541 return entry;
3542}
3543
65f38f15
AM		 3544/* Create an entry in a ppc64 ELF linker hash table. */
3545
3546static struct bfd_hash_entry *
4ce794b7
AM		 3547link_hash_newfunc (struct bfd_hash_entry *entry,
3548 struct bfd_hash_table *table,
3549 const char *string)
65f38f15
AM		 3550{
3551 /* Allocate the structure if it has not already been allocated by a
3552 subclass. */
3553 if (entry == NULL)
3554 {
3555 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3556 if (entry == NULL)
3557 return entry;
3558 }
3559
3560 /* Call the allocation method of the superclass. */
3561 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3562 if (entry != NULL)
3563 {
3564 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3565
b3fac117 3566 memset (&eh->u.stub_cache, 0,
908b32fc 3567 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 3568 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3569
3570 /* When making function calls, old ABI code references function entry
3571 points (dot symbols), while new ABI code references the function
3572 descriptor symbol. We need to make any combination of reference and
3573 definition work together, without breaking archive linking.
3574
3575 For a defined function "foo" and an undefined call to "bar":
3576 An old object defines "foo" and ".foo", references ".bar" (possibly
3577 "bar" too).
3578 A new object defines "foo" and references "bar".
3579
3580 A new object thus has no problem with its undefined symbols being
3581 satisfied by definitions in an old object. On the other hand, the
3582 old object won't have ".bar" satisfied by a new object.
3583
3584 Keep a list of newly added dot-symbols. */
3585
3586 if (string[0] == '.')
3587 {
3588 struct ppc_link_hash_table *htab;
3589
3590 htab = (struct ppc_link_hash_table *) table;
3591 eh->u.next_dot_sym = htab->dot_syms;
3592 htab->dot_syms = eh;
3593 }
65f38f15
AM		 3594 }
3595
3596 return entry;
3597}
3598
3599/* Create a ppc64 ELF linker hash table. */
3600
3601static struct bfd_link_hash_table *
4ce794b7 3602ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3603{
3604 struct ppc_link_hash_table *htab;
3605 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3606
4ce794b7 3607 htab = bfd_zmalloc (amt);
65f38f15
AM		 3608 if (htab == NULL)
3609 return NULL;
3610
66eb6687
AM		 3611 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3612 sizeof (struct ppc_link_hash_entry)))
65f38f15 3613 {
e2d34d7d 3614 free (htab);
65f38f15
AM		 3615 return NULL;
3616 }
3617
721956f4 3618 /* Init the stub hash table too. */
66eb6687
AM		 3619 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3620 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM		 3621 return NULL;
3622
3623 /* And the branch hash table. */
66eb6687
AM		 3624 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3625 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM		 3626 return NULL;
3627
3254fd24
AM		 3628 /* Initializing two fields of the union is just cosmetic. We really
3629 only care about glist, but when compiled on a 32-bit host the
3630 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3631 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3632 htab->elf.init_got_refcount.refcount = 0;
3633 htab->elf.init_got_refcount.glist = NULL;
3634 htab->elf.init_plt_refcount.refcount = 0;
3635 htab->elf.init_plt_refcount.glist = NULL;
3636 htab->elf.init_got_offset.offset = 0;
3637 htab->elf.init_got_offset.glist = NULL;
3638 htab->elf.init_plt_offset.offset = 0;
3639 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3640
65f38f15
AM		 3641 return &htab->elf.root;
3642}
3643
721956f4
AM		 3644/* Free the derived linker hash table. */
3645
3646static void
4ce794b7 3647ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3648{
3649 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3650
3651 bfd_hash_table_free (&ret->stub_hash_table);
3652 bfd_hash_table_free (&ret->branch_hash_table);
3653 _bfd_generic_link_hash_table_free (hash);
3654}
3655
e717da7e
AM		 3656/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3657
3658void
3659ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3660{
3661 struct ppc_link_hash_table *htab;
3662
3663 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3664
3665/* Always hook our dynamic sections into the first bfd, which is the
3666 linker created stub bfd. This ensures that the GOT header is at
3667 the start of the output TOC section. */
3668 htab = ppc_hash_table (info);
3669 htab->stub_bfd = abfd;
3670 htab->elf.dynobj = abfd;
3671}
3672
721956f4
AM		 3673/* Build a name for an entry in the stub hash table. */
3674
3675static char *
4ce794b7
AM		 3676ppc_stub_name (const asection *input_section,
3677 const asection *sym_sec,
3678 const struct ppc_link_hash_entry *h,
3679 const Elf_Internal_Rela *rel)
721956f4
AM		 3680{
3681 char *stub_name;
3682 bfd_size_type len;
3683
3684 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3685 offsets from a sym as a branch target? In fact, we could
3686 probably assume the addend is always zero. */
3687 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3688
3689 if (h)
3690 {
3691 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3692 stub_name = bfd_malloc (len);
46de2a7c
AM		 3693 if (stub_name == NULL)
3694 return stub_name;
3695
3696 sprintf (stub_name, "%08x.%s+%x",
3697 input_section->id & 0xffffffff,
3698 h->elf.root.root.string,
3699 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3700 }
3701 else
3702 {
ad8e1ba5 3703 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3704 stub_name = bfd_malloc (len);
46de2a7c
AM		 3705 if (stub_name == NULL)
3706 return stub_name;
3707
3708 sprintf (stub_name, "%08x.%x:%x+%x",
3709 input_section->id & 0xffffffff,
3710 sym_sec->id & 0xffffffff,
3711 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3712 (int) rel->r_addend & 0xffffffff);
721956f4 3713 }
ee75fd95
AM		 3714 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3715 stub_name[len - 2] = 0;
721956f4
AM		 3716 return stub_name;
3717}
3718
3719/* Look up an entry in the stub hash. Stub entries are cached because
3720 creating the stub name takes a bit of time. */
3721
3722static struct ppc_stub_hash_entry *
4ce794b7
AM		 3723ppc_get_stub_entry (const asection *input_section,
3724 const asection *sym_sec,
039b3fef 3725 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3726 const Elf_Internal_Rela *rel,
3727 struct ppc_link_hash_table *htab)
721956f4
AM		 3728{
3729 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3730 const asection *id_sec;
3731
3732 /* If this input section is part of a group of sections sharing one
3733 stub section, then use the id of the first section in the group.
3734 Stub names need to include a section id, as there may well be
3735 more than one stub used to reach say, printf, and we need to
3736 distinguish between them. */
3737 id_sec = htab->stub_group[input_section->id].link_sec;
3738
b3fac117
AM		 3739 if (h != NULL && h->u.stub_cache != NULL
3740 && h->u.stub_cache->h == h
3741 && h->u.stub_cache->id_sec == id_sec)
721956f4 3742 {
b3fac117 3743 stub_entry = h->u.stub_cache;
721956f4
AM		 3744 }
3745 else
3746 {
3747 char *stub_name;
3748
3749 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3750 if (stub_name == NULL)
3751 return NULL;
3752
3753 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3754 stub_name, FALSE, FALSE);
721956f4 3755 if (h != NULL)
b3fac117 3756 h->u.stub_cache = stub_entry;
721956f4
AM		 3757
3758 free (stub_name);
3759 }
3760
3761 return stub_entry;
3762}
3763
3764/* Add a new stub entry to the stub hash. Not all fields of the new
3765 stub entry are initialised. */
3766
3767static struct ppc_stub_hash_entry *
4ce794b7
AM		 3768ppc_add_stub (const char *stub_name,
3769 asection *section,
3770 struct ppc_link_hash_table *htab)
721956f4
AM		 3771{
3772 asection *link_sec;
3773 asection *stub_sec;
3774 struct ppc_stub_hash_entry *stub_entry;
3775
3776 link_sec = htab->stub_group[section->id].link_sec;
3777 stub_sec = htab->stub_group[section->id].stub_sec;
3778 if (stub_sec == NULL)
3779 {
3780 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3781 if (stub_sec == NULL)
3782 {
d4c88bbb 3783 size_t namelen;
721956f4
AM		 3784 bfd_size_type len;
3785 char *s_name;
3786
d4c88bbb
AM		 3787 namelen = strlen (link_sec->name);
3788 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3789 s_name = bfd_alloc (htab->stub_bfd, len);
3790 if (s_name == NULL)
3791 return NULL;
3792
d4c88bbb
AM		 3793 memcpy (s_name, link_sec->name, namelen);
3794 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3795 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3796 if (stub_sec == NULL)
3797 return NULL;
3798 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3799 }
3800 htab->stub_group[section->id].stub_sec = stub_sec;
3801 }
3802
3803 /* Enter this entry into the linker stub hash table. */
3804 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3805 TRUE, FALSE);
721956f4
AM		 3806 if (stub_entry == NULL)
3807 {
d003868e
AM		 3808 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3809 section->owner, stub_name);
721956f4
AM		 3810 return NULL;
3811 }
3812
3813 stub_entry->stub_sec = stub_sec;
3814 stub_entry->stub_offset = 0;
3815 stub_entry->id_sec = link_sec;
3816 return stub_entry;
3817}
3818
82bd7b59
AM		 3819/* Create sections for linker generated code. */
3820
b34976b6 3821static bfd_boolean
4ce794b7 3822create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3823{
3824 struct ppc_link_hash_table *htab;
3825 flagword flags;
3826
3827 htab = ppc_hash_table (info);
3828
3829 /* Create .sfpr for code to save and restore fp regs. */
3830 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3831 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3832 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3833 flags);
82bd7b59 3834 if (htab->sfpr == NULL
82bd7b59 3835 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3836 return FALSE;
82bd7b59 3837
721956f4 3838 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3839 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3840 flags);
4ce794b7 3841 if (htab->glink == NULL
ee4bf8d2 3842 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 3843 return FALSE;
82bd7b59 3844
c456f082 3845 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM		 3846 flags = (SEC_ALLOC | SEC_LOAD
3847 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3848 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3849 flags);
4ce794b7 3850 if (htab->brlt == NULL
4ce794b7 3851 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3852 return FALSE;
721956f4 3853
e4e0193e 3854 if (!info->shared)
c456f082
AM		 3855 return TRUE;
3856
e4e0193e
AM		 3857 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3858 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3859 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3860 ".rela.branch_lt",
3861 flags);
c456f082
AM		 3862 if (!htab->relbrlt
3863 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3864 return FALSE;
3865
b34976b6 3866 return TRUE;
82bd7b59
AM		 3867}
3868
e717da7e
AM		 3869/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3870 not already done. */
65f38f15 3871
b34976b6 3872static bfd_boolean
e717da7e 3873create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3874{
e717da7e
AM		 3875 asection *got, *relgot;
3876 flagword flags;
3877 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3878
4ce794b7 3879 if (!htab->got)
e717da7e
AM		 3880 {
3881 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3882 return FALSE;
3883
3884 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3885 if (!htab->got)
3886 abort ();
3887 }
3888
3889 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3890 | SEC_LINKER_CREATED);
3891
c456f082 3892 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3893 if (!got
e717da7e
AM		 3894 || !bfd_set_section_alignment (abfd, got, 3))
3895 return FALSE;
65f38f15 3896
c456f082
AM		 3897 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3898 flags | SEC_READONLY);
e717da7e 3899 if (!relgot
e717da7e 3900 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3901 return FALSE;
e717da7e
AM		 3902
3903 ppc64_elf_tdata (abfd)->got = got;
3904 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3905 return TRUE;
65f38f15 3906}
5bd4f169 3907
82bd7b59 3908/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3909
b34976b6 3910static bfd_boolean
4ce794b7 3911ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3912{
65f38f15 3913 struct ppc_link_hash_table *htab;
5bd4f169 3914
65f38f15 3915 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3916 return FALSE;
65f38f15 3917
e717da7e
AM		 3918 htab = ppc_hash_table (info);
3919 if (!htab->got)
3920 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3921 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3922 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3923 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3924 if (!info->shared)
4ce794b7 3925 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3926
e717da7e 3927 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3928 || (!info->shared && !htab->relbss))
65f38f15
AM		 3929 abort ();
3930
b34976b6 3931 return TRUE;
5bd4f169
AM		 3932}
3933
40d16e0b
AM		 3934/* Merge PLT info on FROM with that on TO. */
3935
3936static void
3937move_plt_plist (struct ppc_link_hash_entry *from,
3938 struct ppc_link_hash_entry *to)
3939{
3940 if (from->elf.plt.plist != NULL)
3941 {
3942 if (to->elf.plt.plist != NULL)
3943 {
3944 struct plt_entry **entp;
3945 struct plt_entry *ent;
3946
3947 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3948 {
3949 struct plt_entry *dent;
3950
3951 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3952 if (dent->addend == ent->addend)
3953 {
3954 dent->plt.refcount += ent->plt.refcount;
3955 *entp = ent->next;
3956 break;
3957 }
3958 if (dent == NULL)
3959 entp = &ent->next;
3960 }
3961 *entp = to->elf.plt.plist;
3962 }
3963
3964 to->elf.plt.plist = from->elf.plt.plist;
3965 from->elf.plt.plist = NULL;
3966 }
3967}
3968
65f38f15
AM		 3969/* Copy the extra info we tack onto an elf_link_hash_entry. */
3970
3971static void
fcfa13d2
AM		 3972ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3973 struct elf_link_hash_entry *dir,
3974 struct elf_link_hash_entry *ind)
65f38f15
AM		 3975{
3976 struct ppc_link_hash_entry *edir, *eind;
3977
3978 edir = (struct ppc_link_hash_entry *) dir;
3979 eind = (struct ppc_link_hash_entry *) ind;
3980
411e1bfb 3981 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3982 if (eind->dyn_relocs != NULL)
65f38f15 3983 {
bbd7ec4a
AM		 3984 if (edir->dyn_relocs != NULL)
3985 {
3986 struct ppc_dyn_relocs **pp;
3987 struct ppc_dyn_relocs *p;
3988
fcfa13d2 3989 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 3990 list. Merge any entries against the same section. */
3991 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3992 {
3993 struct ppc_dyn_relocs *q;
3994
3995 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3996 if (q->sec == p->sec)
3997 {
3998 q->pc_count += p->pc_count;
3999 q->count += p->count;
4000 *pp = p->next;
4001 break;
4002 }
4003 if (q == NULL)
4004 pp = &p->next;
4005 }
4006 *pp = edir->dyn_relocs;
4007 }
4008
65f38f15
AM		 4009 edir->dyn_relocs = eind->dyn_relocs;
4010 eind->dyn_relocs = NULL;
4011 }
65f38f15 4012
6349e628
AM		 4013 edir->is_func |= eind->is_func;
4014 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4015 edir->tls_mask |= eind->tls_mask;
6349e628 4016
81848ca0 4017 /* If called to transfer flags for a weakdef during processing
f5385ebf 4018 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4019 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 4020 if (!(ELIMINATE_COPY_RELOCS
4021 && eind->elf.root.type != bfd_link_hash_indirect
4022 && edir->elf.dynamic_adjusted))
4023 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4024
f5385ebf
AM		 4025 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4026 edir->elf.ref_regular |= eind->elf.ref_regular;
4027 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4028 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 4029
4030 /* If we were called to copy over info for a weak sym, that's all. */
4031 if (eind->elf.root.type != bfd_link_hash_indirect)
4032 return;
4033
81848ca0
AM		 4034 /* Copy over got entries that we may have already seen to the
4035 symbol which just became indirect. */
411e1bfb
AM		 4036 if (eind->elf.got.glist != NULL)
4037 {
4038 if (edir->elf.got.glist != NULL)
4039 {
4040 struct got_entry **entp;
4041 struct got_entry *ent;
4042
4043 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4044 {
4045 struct got_entry *dent;
4046
4047 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4048 if (dent->addend == ent->addend
e717da7e 4049 && dent->owner == ent->owner
411e1bfb
AM		 4050 && dent->tls_type == ent->tls_type)
4051 {
4052 dent->got.refcount += ent->got.refcount;
4053 *entp = ent->next;
4054 break;
4055 }
4056 if (dent == NULL)
4057 entp = &ent->next;
4058 }
4059 *entp = edir->elf.got.glist;
4060 }
4061
4062 edir->elf.got.glist = eind->elf.got.glist;
4063 eind->elf.got.glist = NULL;
4064 }
4065
4066 /* And plt entries. */
40d16e0b 4067 move_plt_plist (eind, edir);
411e1bfb 4068
fcfa13d2 4069 if (eind->elf.dynindx != -1)
411e1bfb 4070 {
fcfa13d2
AM		 4071 if (edir->elf.dynindx != -1)
4072 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4073 edir->elf.dynstr_index);
411e1bfb
AM		 4074 edir->elf.dynindx = eind->elf.dynindx;
4075 edir->elf.dynstr_index = eind->elf.dynstr_index;
4076 eind->elf.dynindx = -1;
4077 eind->elf.dynstr_index = 0;
4078 }
411e1bfb
AM		 4079}
4080
8387904d
AM		 4081/* Find the function descriptor hash entry from the given function code
4082 hash entry FH. Link the entries via their OH fields. */
4083
4084static struct ppc_link_hash_entry *
4085get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4086{
4087 struct ppc_link_hash_entry *fdh = fh->oh;
4088
4089 if (fdh == NULL)
4090 {
4091 const char *fd_name = fh->elf.root.root.string + 1;
4092
4093 fdh = (struct ppc_link_hash_entry *)
4094 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4095 if (fdh != NULL)
4096 {
4097 fdh->is_func_descriptor = 1;
4098 fdh->oh = fh;
4099 fh->is_func = 1;
4100 fh->oh = fdh;
4101 }
4102 }
4103
4104 return fdh;
4105}
4106
bb700d78
AM		 4107/* Make a fake function descriptor sym for the code sym FH. */
4108
4109static struct ppc_link_hash_entry *
4110make_fdh (struct bfd_link_info *info,
908b32fc 4111 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4112{
4113 bfd *abfd;
4114 asymbol *newsym;
4115 struct bfd_link_hash_entry *bh;
4116 struct ppc_link_hash_entry *fdh;
4117
4118 abfd = fh->elf.root.u.undef.abfd;
4119 newsym = bfd_make_empty_symbol (abfd);
4120 newsym->name = fh->elf.root.root.string + 1;
4121 newsym->section = bfd_und_section_ptr;
4122 newsym->value = 0;
908b32fc 4123 newsym->flags = BSF_WEAK;
bb700d78
AM		 4124
4125 bh = NULL;
4126 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4127 newsym->flags, newsym->section,
4128 newsym->value, NULL, FALSE, FALSE,
4129 &bh))
4130 return NULL;
4131
4132 fdh = (struct ppc_link_hash_entry *) bh;
4133 fdh->elf.non_elf = 0;
908b32fc
AM		 4134 fdh->fake = 1;
4135 fdh->is_func_descriptor = 1;
4136 fdh->oh = fh;
4137 fh->is_func = 1;
4138 fh->oh = fdh;
bb700d78
AM		 4139 return fdh;
4140}
4141
8387904d
AM		 4142/* Fix function descriptor symbols defined in .opd sections to be
4143 function type. */
555cd476
AM		 4144
4145static bfd_boolean
b3fac117 4146ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM		 4147 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4148 Elf_Internal_Sym *isym,
b3fac117 4149 const char **name ATTRIBUTE_UNUSED,
555cd476
AM		 4150 flagword *flags ATTRIBUTE_UNUSED,
4151 asection **sec,
4152 bfd_vma *value ATTRIBUTE_UNUSED)
4153{
8843416a
AM		 4154 if (*sec != NULL
4155 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4156 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4157
555cd476
AM		 4158 return TRUE;
4159}
4160
8387904d 4161/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4162 inclusion of a new ABI object archive that defines "bar".
4163 NAME is a symbol defined in an archive. Return a symbol in the hash
4164 table that might be satisfied by the archive symbols. */
8387904d
AM		 4165
4166static struct elf_link_hash_entry *
4167ppc64_elf_archive_symbol_lookup (bfd *abfd,
4168 struct bfd_link_info *info,
4169 const char *name)
4170{
4171 struct elf_link_hash_entry *h;
4172 char *dot_name;
4173 size_t len;
4174
4175 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4176 if (h != NULL
4177 /* Don't return this sym if it is a fake function descriptor
4178 created by add_symbol_adjust. */
4179 && !(h->root.type == bfd_link_hash_undefweak
4180 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4181 return h;
4182
4183 if (name[0] == '.')
4184 return h;
4185
4186 len = strlen (name);
4187 dot_name = bfd_alloc (abfd, len + 2);
4188 if (dot_name == NULL)
4189 return (struct elf_link_hash_entry *) 0 - 1;
4190 dot_name[0] = '.';
4191 memcpy (dot_name + 1, name, len + 1);
4192 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4193 bfd_release (abfd, dot_name);
4194 return h;
4195}
4196
4197/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4198 new ABI object defines "bar". Well, at least, undefined dot symbols
4199 are made weak. This stops later archive searches from including an
4200 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4201 prevents the linker complaining about undefined symbols.
4202 We also check and correct mismatched symbol visibility here. The
4203 most restrictive visibility of the function descriptor and the
4204 function entry symbol is used. */
8387904d
AM		 4205
4206static bfd_boolean
b3fac117 4207add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4208{
8387904d
AM		 4209 struct ppc_link_hash_table *htab;
4210 struct ppc_link_hash_entry *fdh;
4211
b3fac117 4212 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4213 return TRUE;
4214
b3fac117
AM		 4215 if (eh->elf.root.type == bfd_link_hash_warning)
4216 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4217
b3fac117
AM		 4218 if (eh->elf.root.root.string[0] != '.')
4219 abort ();
8387904d 4220
b3fac117 4221 htab = ppc_hash_table (info);
99877b66 4222 fdh = get_fdh (eh, htab);
bb700d78 4223 if (fdh == NULL
b3fac117 4224 && !info->relocatable
bb700d78
AM		 4225 && (eh->elf.root.type == bfd_link_hash_undefined
4226 || eh->elf.root.type == bfd_link_hash_undefweak)
4227 && eh->elf.ref_regular)
4228 {
4229 /* Make an undefweak function descriptor sym, which is enough to
4230 pull in an --as-needed shared lib, but won't cause link
4231 errors. Archives are handled elsewhere. */
b3fac117 4232 fdh = make_fdh (info, eh);
bb700d78 4233 if (fdh == NULL)
b3fac117 4234 return FALSE;
bb700d78
AM		 4235 else
4236 fdh->elf.ref_regular = 1;
4237 }
e87d886e 4238 else if (fdh != NULL)
8387904d 4239 {
35b0ce59
AM		 4240 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4241 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4242 if (entry_vis < descr_vis)
4243 fdh->elf.other += entry_vis - descr_vis;
4244 else if (entry_vis > descr_vis)
4245 eh->elf.other += descr_vis - entry_vis;
4246
e87d886e
AM		 4247 if ((fdh->elf.root.type == bfd_link_hash_defined
4248 || fdh->elf.root.type == bfd_link_hash_defweak)
4249 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4250 {
4251 eh->elf.root.type = bfd_link_hash_undefweak;
4252 eh->was_undefined = 1;
4253 htab->twiddled_syms = 1;
4254 }
8387904d 4255 }
99877b66 4256
8387904d
AM		 4257 return TRUE;
4258}
4259
b3fac117
AM		 4260/* Process list of dot-symbols we made in link_hash_newfunc. */
4261
8387904d 4262static bfd_boolean
b3fac117 4263ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4264{
99877b66 4265 struct ppc_link_hash_table *htab;
b3fac117 4266 struct ppc_link_hash_entry **p, *eh;
433817dd 4267
99877b66 4268 htab = ppc_hash_table (info);
ee75fd95 4269 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4270 return TRUE;
4271
b3fac117
AM		 4272 if (is_ppc64_elf_target (ibfd->xvec))
4273 {
4274 p = &htab->dot_syms;
4275 while ((eh = *p) != NULL)
4276 {
4277 *p = NULL;
4278 if (!add_symbol_adjust (eh, info))
4279 return FALSE;
4280 p = &eh->u.next_dot_sym;
4281 }
4282 }
4283
4284 /* Clear the list for non-ppc64 input files. */
4285 p = &htab->dot_syms;
4286 while ((eh = *p) != NULL)
4287 {
4288 *p = NULL;
4289 p = &eh->u.next_dot_sym;
4290 }
99877b66
AM		 4291
4292 /* We need to fix the undefs list for any syms we have twiddled to
4293 undef_weak. */
4294 if (htab->twiddled_syms)
4295 {
77cfaee6 4296 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4297 htab->twiddled_syms = 0;
4298 }
b3fac117 4299 return TRUE;
8387904d
AM		 4300}
4301
97fed1c9
JJ		 4302/* Undo hash table changes when an --as-needed input file is determined
4303 not to be needed. */
4304
4305static bfd_boolean
4306ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4307 struct bfd_link_info *info)
4308{
4309 ppc_hash_table (info)->dot_syms = NULL;
4310 return TRUE;
4311}
4312
411e1bfb 4313static bfd_boolean
4ce794b7
AM		 4314update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4315 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4316{
4317 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4318 char *local_got_tls_masks;
411e1bfb
AM		 4319
4320 if (local_got_ents == NULL)
4321 {
4322 bfd_size_type size = symtab_hdr->sh_info;
4323
e7b938ca 4324 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4325 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4326 if (local_got_ents == NULL)
4327 return FALSE;
4328 elf_local_got_ents (abfd) = local_got_ents;
4329 }
4330
4331 if ((tls_type & TLS_EXPLICIT) == 0)
4332 {
4333 struct got_entry *ent;
4334
4335 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4336 if (ent->addend == r_addend
4337 && ent->owner == abfd
4338 && ent->tls_type == tls_type)
411e1bfb
AM		 4339 break;
4340 if (ent == NULL)
4341 {
4342 bfd_size_type amt = sizeof (*ent);
4ce794b7 4343 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4344 if (ent == NULL)
4345 return FALSE;
4346 ent->next = local_got_ents[r_symndx];
4347 ent->addend = r_addend;
e717da7e 4348 ent->owner = abfd;
411e1bfb
AM		 4349 ent->tls_type = tls_type;
4350 ent->got.refcount = 0;
4351 local_got_ents[r_symndx] = ent;
4352 }
4353 ent->got.refcount += 1;
4354 }
4355
e7b938ca
AM		 4356 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4357 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4358 return TRUE;
65f38f15
AM		 4359}
4360
411e1bfb 4361static bfd_boolean
4ce794b7 4362update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4363{
411e1bfb 4364 struct plt_entry *ent;
1e2f5b6e 4365
411e1bfb
AM		 4366 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4367 if (ent->addend == addend)
4368 break;
4369 if (ent == NULL)
1e2f5b6e 4370 {
411e1bfb 4371 bfd_size_type amt = sizeof (*ent);
4ce794b7 4372 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4373 if (ent == NULL)
4374 return FALSE;
4375 ent->next = eh->elf.plt.plist;
4376 ent->addend = addend;
4377 ent->plt.refcount = 0;
4378 eh->elf.plt.plist = ent;
1e2f5b6e 4379 }
411e1bfb 4380 ent->plt.refcount += 1;
f5385ebf 4381 eh->elf.needs_plt = 1;
93f3fa99
AM		 4382 if (eh->elf.root.root.string[0] == '.'
4383 && eh->elf.root.root.string[1] != '\0')
4384 eh->is_func = 1;
b34976b6 4385 return TRUE;
1e2f5b6e
AM		 4386}
4387
5bd4f169 4388/* Look through the relocs for a section during the first phase, and
65f38f15 4389 calculate needed space in the global offset table, procedure
5d1634d7 4390 linkage table, and dynamic reloc sections. */
5bd4f169 4391
b34976b6 4392static bfd_boolean
4ce794b7
AM		 4393ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4394 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4395{
65f38f15 4396 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4397 Elf_Internal_Shdr *symtab_hdr;
4398 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4399 const Elf_Internal_Rela *rel;
4400 const Elf_Internal_Rela *rel_end;
5bd4f169 4401 asection *sreloc;
1e2f5b6e 4402 asection **opd_sym_map;
5bd4f169 4403
1049f94e 4404 if (info->relocatable)
b34976b6 4405 return TRUE;
5bd4f169 4406
680a3378
AM		 4407 /* Don't do anything special with non-loaded, non-alloced sections.
4408 In particular, any relocs in such sections should not affect GOT
4409 and PLT reference counting (ie. we don't allow them to create GOT
4410 or PLT entries), there's no possibility or desire to optimize TLS
4411 relocs, and there's not much point in propagating relocs to shared
4412 libs that the dynamic linker won't relocate. */
4413 if ((sec->flags & SEC_ALLOC) == 0)
4414 return TRUE;
4415
65f38f15 4416 htab = ppc_hash_table (info);
5bd4f169 4417 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4418
4419 sym_hashes = elf_sym_hashes (abfd);
4420 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4421 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4422 - symtab_hdr->sh_info);
5bd4f169
AM		 4423
4424 sreloc = NULL;
1e2f5b6e
AM		 4425 opd_sym_map = NULL;
4426 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4427 {
4428 /* Garbage collection needs some extra help with .opd sections.
4429 We don't want to necessarily keep everything referenced by
4430 relocs in .opd, as that would keep all functions. Instead,
4431 if we reference an .opd symbol (a function descriptor), we
4432 want to keep the function code symbol's section. This is
4433 easy for global symbols, but for local syms we need to keep
4434 information about the associated function section. Later, if
4435 edit_opd deletes entries, we'll use this array to adjust
4436 local syms in .opd. */
4437 union opd_info {
4438 asection *func_section;
4439 long entry_adjust;
4440 };
4441 bfd_size_type amt;
4442
3f764659 4443 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4444 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4445 if (opd_sym_map == NULL)
b34976b6 4446 return FALSE;
7c8fe5c4
AM		 4447 ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map;
4448 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4449 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4450 }
5bd4f169 4451
82bd7b59
AM		 4452 if (htab->sfpr == NULL
4453 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4454 return FALSE;
82bd7b59 4455
5bd4f169
AM		 4456 rel_end = relocs + sec->reloc_count;
4457 for (rel = relocs; rel < rel_end; rel++)
4458 {
4459 unsigned long r_symndx;
4460 struct elf_link_hash_entry *h;
04c9666a 4461 enum elf_ppc64_reloc_type r_type;
411e1bfb 4462 int tls_type = 0;
7c8fe5c4 4463 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM		 4464
4465 r_symndx = ELF64_R_SYM (rel->r_info);
4466 if (r_symndx < symtab_hdr->sh_info)
4467 h = NULL;
4468 else
973a3492
L		 4469 {
4470 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4471 while (h->root.type == bfd_link_hash_indirect
4472 || h->root.type == bfd_link_hash_warning)
4473 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4474 }
5bd4f169 4475
4ce794b7 4476 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4477 switch (r_type)
5bd4f169 4478 {
411e1bfb
AM		 4479 case R_PPC64_GOT_TLSLD16:
4480 case R_PPC64_GOT_TLSLD16_LO:
4481 case R_PPC64_GOT_TLSLD16_HI:
4482 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4483 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4484 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4485 goto dogottls;
4486
4487 case R_PPC64_GOT_TLSGD16:
4488 case R_PPC64_GOT_TLSGD16_LO:
4489 case R_PPC64_GOT_TLSGD16_HI:
4490 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4491 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4492 goto dogottls;
4493
4494 case R_PPC64_GOT_TPREL16_DS:
4495 case R_PPC64_GOT_TPREL16_LO_DS:
4496 case R_PPC64_GOT_TPREL16_HI:
4497 case R_PPC64_GOT_TPREL16_HA:
4498 if (info->shared)
4499 info->flags |= DF_STATIC_TLS;
4500 tls_type = TLS_TLS | TLS_TPREL;
4501 goto dogottls;
4502
4503 case R_PPC64_GOT_DTPREL16_DS:
4504 case R_PPC64_GOT_DTPREL16_LO_DS:
4505 case R_PPC64_GOT_DTPREL16_HI:
4506 case R_PPC64_GOT_DTPREL16_HA:
4507 tls_type = TLS_TLS | TLS_DTPREL;
4508 dogottls:
4509 sec->has_tls_reloc = 1;
4510 /* Fall thru */
4511
5bd4f169 4512 case R_PPC64_GOT16:
5bd4f169 4513 case R_PPC64_GOT16_DS:
65f38f15
AM		 4514 case R_PPC64_GOT16_HA:
4515 case R_PPC64_GOT16_HI:
4516 case R_PPC64_GOT16_LO:
5bd4f169 4517 case R_PPC64_GOT16_LO_DS:
65f38f15 4518 /* This symbol requires a global offset table entry. */
4c52953f 4519 sec->has_toc_reloc = 1;
e717da7e
AM		 4520 if (ppc64_elf_tdata (abfd)->got == NULL
4521 && !create_got_section (abfd, info))
b34976b6 4522 return FALSE;
5bd4f169
AM		 4523
4524 if (h != NULL)
4525 {
411e1bfb
AM		 4526 struct ppc_link_hash_entry *eh;
4527 struct got_entry *ent;
65f38f15 4528
411e1bfb
AM		 4529 eh = (struct ppc_link_hash_entry *) h;
4530 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4531 if (ent->addend == rel->r_addend
e717da7e 4532 && ent->owner == abfd
411e1bfb
AM		 4533 && ent->tls_type == tls_type)
4534 break;
4535 if (ent == NULL)
5bd4f169 4536 {
411e1bfb 4537 bfd_size_type amt = sizeof (*ent);
4ce794b7 4538 ent = bfd_alloc (abfd, amt);
411e1bfb 4539 if (ent == NULL)
b34976b6 4540 return FALSE;
411e1bfb
AM		 4541 ent->next = eh->elf.got.glist;
4542 ent->addend = rel->r_addend;
e717da7e 4543 ent->owner = abfd;
411e1bfb
AM		 4544 ent->tls_type = tls_type;
4545 ent->got.refcount = 0;
4546 eh->elf.got.glist = ent;
5bd4f169 4547 }
411e1bfb 4548 ent->got.refcount += 1;
e7b938ca 4549 eh->tls_mask |= tls_type;
5bd4f169 4550 }
411e1bfb
AM		 4551 else
4552 /* This is a global offset table entry for a local symbol. */
4553 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4554 rel->r_addend, tls_type))
4555 return FALSE;
5bd4f169
AM		 4556 break;
4557
5bd4f169 4558 case R_PPC64_PLT16_HA:
65f38f15
AM		 4559 case R_PPC64_PLT16_HI:
4560 case R_PPC64_PLT16_LO:
4561 case R_PPC64_PLT32:
4562 case R_PPC64_PLT64:
5bd4f169 4563 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4564 actually build the entry in adjust_dynamic_symbol,
4565 because this might be a case of linking PIC code without
4566 linking in any dynamic objects, in which case we don't
4567 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4568 if (h == NULL)
4569 {
4570 /* It does not make sense to have a procedure linkage
3fad3c7c 4571 table entry for a local symbol. */
5bd4f169 4572 bfd_set_error (bfd_error_bad_value);
b34976b6 4573 return FALSE;
5bd4f169 4574 }
411e1bfb
AM		 4575 else
4576 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4577 rel->r_addend))
4578 return FALSE;
5bd4f169
AM		 4579 break;
4580
4581 /* The following relocations don't need to propagate the
4582 relocation if linking a shared object since they are
4583 section relative. */
4584 case R_PPC64_SECTOFF:
4585 case R_PPC64_SECTOFF_LO:
4586 case R_PPC64_SECTOFF_HI:
4587 case R_PPC64_SECTOFF_HA:
4588 case R_PPC64_SECTOFF_DS:
4589 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4590 case R_PPC64_DTPREL16:
4591 case R_PPC64_DTPREL16_LO:
4592 case R_PPC64_DTPREL16_HI:
4593 case R_PPC64_DTPREL16_HA:
4594 case R_PPC64_DTPREL16_DS:
4595 case R_PPC64_DTPREL16_LO_DS:
4596 case R_PPC64_DTPREL16_HIGHER:
4597 case R_PPC64_DTPREL16_HIGHERA:
4598 case R_PPC64_DTPREL16_HIGHEST:
4599 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4600 break;
4601
ad8e1ba5
AM		 4602 /* Nor do these. */
4603 case R_PPC64_TOC16:
4604 case R_PPC64_TOC16_LO:
4605 case R_PPC64_TOC16_HI:
4606 case R_PPC64_TOC16_HA:
4607 case R_PPC64_TOC16_DS:
4608 case R_PPC64_TOC16_LO_DS:
4c52953f 4609 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4610 break;
4611
5bd4f169
AM		 4612 /* This relocation describes the C++ object vtable hierarchy.
4613 Reconstruct it for later use during GC. */
4614 case R_PPC64_GNU_VTINHERIT:
c152c796 4615 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4616 return FALSE;
5bd4f169
AM		 4617 break;
4618
4619 /* This relocation describes which C++ vtable entries are actually
4620 used. Record for later use during GC. */
4621 case R_PPC64_GNU_VTENTRY:
c152c796 4622 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4623 return FALSE;
5bd4f169
AM		 4624 break;
4625
721956f4
AM		 4626 case R_PPC64_REL14:
4627 case R_PPC64_REL14_BRTAKEN:
4628 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 4629 {
4630 asection *dest = NULL;
4631
4632 /* Heuristic: If jumping outside our section, chances are
4633 we are going to need a stub. */
4634 if (h != NULL)
4635 {
4636 /* If the sym is weak it may be overridden later, so
4637 don't assume we know where a weak sym lives. */
4638 if (h->root.type == bfd_link_hash_defined)
4639 dest = h->root.u.def.section;
4640 }
4641 else
4642 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4643 sec, r_symndx);
4644 if (dest != sec)
7c8fe5c4 4645 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4646 }
721956f4
AM		 4647 /* Fall through. */
4648
5d1634d7 4649 case R_PPC64_REL24:
8387904d 4650 if (h != NULL)
5d1634d7
AM		 4651 {
4652 /* We may need a .plt entry if the function this reloc
4653 refers to is in a shared lib. */
411e1bfb
AM		 4654 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4655 rel->r_addend))
4656 return FALSE;
8387904d
AM		 4657 if (h == &htab->tls_get_addr->elf
4658 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4659 sec->has_tls_reloc = 1;
8387904d 4660 else if (htab->tls_get_addr == NULL
0112cd26 4661 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM		 4662 && (h->root.root.string[15] == 0
4663 || h->root.root.string[15] == '@'))
411e1bfb 4664 {
8387904d
AM		 4665 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4666 sec->has_tls_reloc = 1;
4667 }
4668 else if (htab->tls_get_addr_fd == NULL
0112cd26 4669 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM		 4670 && (h->root.root.string[14] == 0
4671 || h->root.root.string[14] == '@'))
4672 {
4673 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4674 sec->has_tls_reloc = 1;
4675 }
4676 }
4677 break;
4678
4679 case R_PPC64_TPREL64:
4680 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4681 if (info->shared)
4682 info->flags |= DF_STATIC_TLS;
4683 goto dotlstoc;
4684
4685 case R_PPC64_DTPMOD64:
4686 if (rel + 1 < rel_end
4687 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4688 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4689 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4690 else
951fd09b 4691 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4692 goto dotlstoc;
4693
4694 case R_PPC64_DTPREL64:
4695 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4696 if (rel != relocs
4697 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4698 && rel[-1].r_offset == rel->r_offset - 8)
4699 /* This is the second reloc of a dtpmod, dtprel pair.
4700 Don't mark with TLS_DTPREL. */
4701 goto dodyn;
4702
4703 dotlstoc:
4704 sec->has_tls_reloc = 1;
4705 if (h != NULL)
4706 {
4707 struct ppc_link_hash_entry *eh;
4708 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4709 eh->tls_mask |= tls_type;
411e1bfb
AM		 4710 }
4711 else
4712 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4713 rel->r_addend, tls_type))
4714 return FALSE;
4715
7c8fe5c4
AM		 4716 ppc64_sec = ppc64_elf_section_data (sec);
4717 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4718 {
e7b938ca 4719 /* One extra to simplify get_tls_mask. */
eea6121a 4720 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM		 4721 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4722 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4723 return FALSE;
7c8fe5c4
AM		 4724 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4725 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 4726 }
4727 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4728 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4729
4730 /* Mark the second slot of a GD or LD entry.
4731 -1 to indicate GD and -2 to indicate LD. */
4732 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4733 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4734 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4735 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4736 goto dodyn;
4737
4738 case R_PPC64_TPREL16:
4739 case R_PPC64_TPREL16_LO:
4740 case R_PPC64_TPREL16_HI:
4741 case R_PPC64_TPREL16_HA:
4742 case R_PPC64_TPREL16_DS:
4743 case R_PPC64_TPREL16_LO_DS:
4744 case R_PPC64_TPREL16_HIGHER:
4745 case R_PPC64_TPREL16_HIGHERA:
4746 case R_PPC64_TPREL16_HIGHEST:
4747 case R_PPC64_TPREL16_HIGHESTA:
4748 if (info->shared)
4749 {
4750 info->flags |= DF_STATIC_TLS;
4751 goto dodyn;
5d1634d7
AM		 4752 }
4753 break;
4754
e86ce104 4755 case R_PPC64_ADDR64:
1e2f5b6e 4756 if (opd_sym_map != NULL
1e2f5b6e 4757 && rel + 1 < rel_end
4ce794b7 4758 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4759 {
8387904d
AM		 4760 if (h != NULL)
4761 {
4762 if (h->root.root.string[0] == '.'
4763 && h->root.root.string[1] != 0
4764 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4765 ;
4766 else
4767 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4768 }
4769 else
4770 {
4771 asection *s;
1e2f5b6e 4772
8387904d
AM		 4773 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4774 r_symndx);
4775 if (s == NULL)
4776 return FALSE;
4777 else if (s != sec)
3f764659 4778 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4779 }
1e2f5b6e 4780 }
e86ce104
AM		 4781 /* Fall through. */
4782
04c9666a 4783 case R_PPC64_REL30:
5bd4f169 4784 case R_PPC64_REL32:
04c9666a 4785 case R_PPC64_REL64:
65f38f15
AM		 4786 case R_PPC64_ADDR14:
4787 case R_PPC64_ADDR14_BRNTAKEN:
4788 case R_PPC64_ADDR14_BRTAKEN:
4789 case R_PPC64_ADDR16:
4790 case R_PPC64_ADDR16_DS:
4791 case R_PPC64_ADDR16_HA:
4792 case R_PPC64_ADDR16_HI:
4793 case R_PPC64_ADDR16_HIGHER:
4794 case R_PPC64_ADDR16_HIGHERA:
4795 case R_PPC64_ADDR16_HIGHEST:
4796 case R_PPC64_ADDR16_HIGHESTA:
4797 case R_PPC64_ADDR16_LO:
4798 case R_PPC64_ADDR16_LO_DS:
4799 case R_PPC64_ADDR24:
65f38f15 4800 case R_PPC64_ADDR32:
65f38f15
AM		 4801 case R_PPC64_UADDR16:
4802 case R_PPC64_UADDR32:
4803 case R_PPC64_UADDR64:
5bd4f169 4804 case R_PPC64_TOC:
81848ca0
AM		 4805 if (h != NULL && !info->shared)
4806 /* We may need a copy reloc. */
f5385ebf 4807 h->non_got_ref = 1;
81848ca0 4808
41bd81ab 4809 /* Don't propagate .opd relocs. */
1e2f5b6e 4810 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4811 break;
e86ce104 4812
65f38f15
AM		 4813 /* If we are creating a shared library, and this is a reloc
4814 against a global symbol, or a non PC relative reloc
4815 against a local symbol, then we need to copy the reloc
4816 into the shared library. However, if we are linking with
4817 -Bsymbolic, we do not need to copy a reloc against a
4818 global symbol which is defined in an object we are
4819 including in the link (i.e., DEF_REGULAR is set). At
4820 this point we have not seen all the input files, so it is
4821 possible that DEF_REGULAR is not set now but will be set
4822 later (it is never cleared). In case of a weak definition,
4823 DEF_REGULAR may be cleared later by a strong definition in
4824 a shared library. We account for that possibility below by
f4656909 4825 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4826 table entry. A similar situation occurs when creating
4827 shared libraries and symbol visibility changes render the
4828 symbol local.
4829
4830 If on the other hand, we are creating an executable, we
4831 may need to keep relocations for symbols satisfied by a
4832 dynamic library if we manage to avoid copy relocs for the
4833 symbol. */
411e1bfb 4834 dodyn:
65f38f15 4835 if ((info->shared
411e1bfb 4836 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4837 || (h != NULL
4838 && (! info->symbolic
4839 || h->root.type == bfd_link_hash_defweak
f5385ebf 4840 || !h->def_regular))))
f4656909
AM		 4841 || (ELIMINATE_COPY_RELOCS
4842 && !info->shared
65f38f15
AM		 4843 && h != NULL
4844 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4845 || !h->def_regular)))
5bd4f169 4846 {
ec338859
AM		 4847 struct ppc_dyn_relocs *p;
4848 struct ppc_dyn_relocs **head;
4849
65f38f15
AM		 4850 /* We must copy these reloc types into the output file.
4851 Create a reloc section in dynobj and make room for
4852 this reloc. */
5bd4f169
AM		 4853 if (sreloc == NULL)
4854 {
4855 const char *name;
65f38f15 4856 bfd *dynobj;
5bd4f169
AM		 4857
4858 name = (bfd_elf_string_from_elf_section
4859 (abfd,
4860 elf_elfheader (abfd)->e_shstrndx,
4861 elf_section_data (sec)->rel_hdr.sh_name));
4862 if (name == NULL)
b34976b6 4863 return FALSE;
5bd4f169 4864
0112cd26 4865 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM		 4866 || strcmp (bfd_get_section_name (abfd, sec),
4867 name + 5) != 0)
4868 {
4869 (*_bfd_error_handler)
d003868e
AM		 4870 (_("%B: bad relocation section name `%s\'"),
4871 abfd, name);
5d1634d7 4872 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4873 }
4874
65f38f15 4875 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4876 sreloc = bfd_get_section_by_name (dynobj, name);
4877 if (sreloc == NULL)
4878 {
4879 flagword flags;
4880
5bd4f169 4881 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4882 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4883 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4884 sreloc = bfd_make_section_with_flags (dynobj,
4885 name,
4886 flags);
5bd4f169 4887 if (sreloc == NULL
65f38f15 4888 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4889 return FALSE;
5bd4f169 4890 }
65f38f15 4891 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4892 }
4893
65f38f15
AM		 4894 /* If this is a global symbol, we count the number of
4895 relocations we need for this symbol. */
4896 if (h != NULL)
4897 {
ec338859 4898 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4899 }
4900 else
4901 {
ec338859
AM		 4902 /* Track dynamic relocs needed for local syms too.
4903 We really need local syms available to do this
4904 easily. Oh well. */
4905
4906 asection *s;
6edfbbad
DJ		 4907 void *vpp;
4908
ec338859
AM		 4909 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4910 sec, r_symndx);
4911 if (s == NULL)
b34976b6 4912 return FALSE;
ec338859 4913
6edfbbad
DJ		 4914 vpp = &elf_section_data (s)->local_dynrel;
4915 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 4916 }
ec338859
AM		 4917
4918 p = *head;
4919 if (p == NULL || p->sec != sec)
4920 {
4ce794b7 4921 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4922 if (p == NULL)
b34976b6 4923 return FALSE;
ec338859
AM		 4924 p->next = *head;
4925 *head = p;
4926 p->sec = sec;
4927 p->count = 0;
4928 p->pc_count = 0;
4929 }
4930
4931 p->count += 1;
411e1bfb 4932 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4933 p->pc_count += 1;
65f38f15 4934 }
5bd4f169 4935 break;
65f38f15
AM		 4936
4937 default:
96e0dda4 4938 break;
5bd4f169
AM		 4939 }
4940 }
4941
b34976b6 4942 return TRUE;
5bd4f169
AM		 4943}
4944
8387904d
AM		 4945/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4946 of the code entry point, and its section. */
4947
4948static bfd_vma
4949opd_entry_value (asection *opd_sec,
4950 bfd_vma offset,
4951 asection **code_sec,
4952 bfd_vma *code_off)
4953{
4954 bfd *opd_bfd = opd_sec->owner;
8860955f 4955 Elf_Internal_Rela *relocs;
8387904d 4956 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4957 bfd_vma val;
8387904d 4958
4b85d634
AM		 4959 /* No relocs implies we are linking a --just-symbols object. */
4960 if (opd_sec->reloc_count == 0)
4961 {
4962 bfd_vma val;
4963
4964 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4965 return (bfd_vma) -1;
3b36f7e6 4966
4b85d634
AM		 4967 if (code_sec != NULL)
4968 {
4969 asection *sec, *likely = NULL;
4970 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4971 if (sec->vma <= val
4972 && (sec->flags & SEC_LOAD) != 0
4973 && (sec->flags & SEC_ALLOC) != 0)
4974 likely = sec;
4975 if (likely != NULL)
4976 {
4977 *code_sec = likely;
4978 if (code_off != NULL)
4979 *code_off = val - likely->vma;
4980 }
4981 }
4982 return val;
4983 }
4984
8860955f
AM		 4985 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4986 if (relocs == NULL)
4987 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4988
8387904d 4989 /* Go find the opd reloc at the sym address. */
8860955f 4990 lo = relocs;
8387904d
AM		 4991 BFD_ASSERT (lo != NULL);
4992 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4993 val = (bfd_vma) -1;
8387904d
AM		 4994 while (lo < hi)
4995 {
4996 look = lo + (hi - lo) / 2;
4997 if (look->r_offset < offset)
4998 lo = look + 1;
4999 else if (look->r_offset > offset)
5000 hi = look;
5001 else
5002 {
5003 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
5004 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5005 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5006 {
5007 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5008 asection *sec;
5009
5010 if (symndx < symtab_hdr->sh_info)
5011 {
5012 Elf_Internal_Sym *sym;
5013
5014 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5015 if (sym == NULL)
5016 {
5017 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5018 symtab_hdr->sh_info,
5019 0, NULL, NULL, NULL);
5020 if (sym == NULL)
645ea6a9 5021 break;
8387904d
AM		 5022 symtab_hdr->contents = (bfd_byte *) sym;
5023 }
5024
5025 sym += symndx;
5026 val = sym->st_value;
5027 sec = NULL;
5028 if ((sym->st_shndx != SHN_UNDEF
5029 && sym->st_shndx < SHN_LORESERVE)
5030 || sym->st_shndx > SHN_HIRESERVE)
5031 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5032 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5033 }
5034 else
5035 {
5036 struct elf_link_hash_entry **sym_hashes;
5037 struct elf_link_hash_entry *rh;
5038
5039 sym_hashes = elf_sym_hashes (opd_bfd);
5040 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5041 while (rh->root.type == bfd_link_hash_indirect
5042 || rh->root.type == bfd_link_hash_warning)
5043 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5044 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5045 || rh->root.type == bfd_link_hash_defweak);
5046 val = rh->root.u.def.value;
5047 sec = rh->root.u.def.section;
5048 }
5049 val += look->r_addend;
5050 if (code_off != NULL)
5051 *code_off = val;
5052 if (code_sec != NULL)
5053 *code_sec = sec;
5054 if (sec != NULL && sec->output_section != NULL)
5055 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 5056 }
5057 break;
5058 }
5059 }
645ea6a9 5060
645ea6a9 5061 return val;
8387904d
AM		 5062}
5063
64d03ab5
AM		 5064/* Mark sections containing dynamically referenced symbols. When
5065 building shared libraries, we must assume that any visible symbol is
5066 referenced. */
5067
5068static bfd_boolean
5069ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5070{
5071 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5072 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5073
5074 if (eh->elf.root.type == bfd_link_hash_warning)
5075 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5076
5077 /* Dynamic linking info is on the func descriptor sym. */
5078 if (eh->oh != NULL
5079 && eh->oh->is_func_descriptor
5080 && (eh->oh->elf.root.type == bfd_link_hash_defined
5081 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5082 eh = eh->oh;
5083
5084 if ((eh->elf.root.type == bfd_link_hash_defined
5085 || eh->elf.root.type == bfd_link_hash_defweak)
5086 && (eh->elf.ref_dynamic
5087 || (!info->executable
5088 && eh->elf.def_regular
5089 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5090 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5091 {
5092 asection *code_sec;
5093
5094 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5095
5096 /* Function descriptor syms cause the associated
5097 function code sym section to be marked. */
5098 if (eh->is_func_descriptor
5099 && (eh->oh->elf.root.type == bfd_link_hash_defined
5100 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5101 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5102 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5103 && opd_entry_value (eh->elf.root.u.def.section,
5104 eh->elf.root.u.def.value,
5105 &code_sec, NULL) != (bfd_vma) -1)
5106 code_sec->flags |= SEC_KEEP;
5107 }
5108
5109 return TRUE;
5110}
5111
5bd4f169
AM		 5112/* Return the section that should be marked against GC for a given
5113 relocation. */
5114
5115static asection *
4ce794b7 5116ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 5117 struct bfd_link_info *info,
4ce794b7
AM		 5118 Elf_Internal_Rela *rel,
5119 struct elf_link_hash_entry *h,
5120 Elf_Internal_Sym *sym)
5bd4f169 5121{
ccfa59ea
AM		 5122 asection *rsec;
5123
5124 /* First mark all our entry sym sections. */
5125 if (info->gc_sym_list != NULL)
5126 {
5127 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5128 struct bfd_sym_chain *sym = info->gc_sym_list;
5129
5130 info->gc_sym_list = NULL;
b56cbdb9 5131 for (; sym != NULL; sym = sym->next)
ccfa59ea
AM		 5132 {
5133 struct ppc_link_hash_entry *eh;
5134
5135 eh = (struct ppc_link_hash_entry *)
5136 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5137 if (eh == NULL)
5138 continue;
5139 if (eh->elf.root.type != bfd_link_hash_defined
5140 && eh->elf.root.type != bfd_link_hash_defweak)
5141 continue;
5142
c4f68ce3
AM		 5143 if (eh->is_func_descriptor
5144 && (eh->oh->elf.root.type == bfd_link_hash_defined
5145 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5146 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 5147 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5148 && opd_entry_value (eh->elf.root.u.def.section,
5149 eh->elf.root.u.def.value,
5150 &rsec, NULL) != (bfd_vma) -1)
5151 ;
ccfa59ea
AM		 5152 else
5153 continue;
5154
5155 if (!rsec->gc_mark)
5156 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5157
5158 rsec = eh->elf.root.u.def.section;
5159 if (!rsec->gc_mark)
5160 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
ccfa59ea 5161 }
ccfa59ea
AM		 5162 }
5163
5164 /* Syms return NULL if we're marking .opd, so we avoid marking all
5165 function sections, as all functions are referenced in .opd. */
5166 rsec = NULL;
5167 if (get_opd_info (sec) != NULL)
5168 return rsec;
1e2f5b6e 5169
5bd4f169
AM		 5170 if (h != NULL)
5171 {
04c9666a 5172 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5173 struct ppc_link_hash_entry *eh;
a33d1f77 5174
4ce794b7 5175 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5176 switch (r_type)
5bd4f169
AM		 5177 {
5178 case R_PPC64_GNU_VTINHERIT:
5179 case R_PPC64_GNU_VTENTRY:
5180 break;
5181
5182 default:
5183 switch (h->root.type)
5184 {
5185 case bfd_link_hash_defined:
5186 case bfd_link_hash_defweak:
ccfa59ea 5187 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5188 if (eh->oh != NULL
5189 && eh->oh->is_func_descriptor
5190 && (eh->oh->elf.root.type == bfd_link_hash_defined
5191 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5192 eh = eh->oh;
1e2f5b6e
AM		 5193
5194 /* Function descriptor syms cause the associated
5195 function code sym section to be marked. */
c4f68ce3
AM		 5196 if (eh->is_func_descriptor
5197 && (eh->oh->elf.root.type == bfd_link_hash_defined
5198 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5199 {
5200 /* They also mark their opd section. */
5201 if (!eh->elf.root.u.def.section->gc_mark)
5202 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5203 ppc64_elf_gc_mark_hook);
5204
5205 rsec = eh->oh->elf.root.u.def.section;
5206 }
8387904d
AM		 5207 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5208 && opd_entry_value (eh->elf.root.u.def.section,
5209 eh->elf.root.u.def.value,
5210 &rsec, NULL) != (bfd_vma) -1)
5211 {
5212 if (!eh->elf.root.u.def.section->gc_mark)
5213 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5214 ppc64_elf_gc_mark_hook);
5215 }
ccfa59ea 5216 else
1e2f5b6e
AM		 5217 rsec = h->root.u.def.section;
5218 break;
5bd4f169
AM		 5219
5220 case bfd_link_hash_common:
1e2f5b6e
AM		 5221 rsec = h->root.u.c.p->section;
5222 break;
5bd4f169
AM		 5223
5224 default:
5225 break;
5226 }
5227 }
5228 }
5229 else
5230 {
1e2f5b6e
AM		 5231 asection **opd_sym_section;
5232
5233 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5234 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5235 if (opd_sym_section != NULL)
ccfa59ea
AM		 5236 {
5237 if (!rsec->gc_mark)
5238 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5239
b4f4e59f 5240 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5241 }
5bd4f169
AM		 5242 }
5243
1e2f5b6e 5244 return rsec;
5bd4f169
AM		 5245}
5246
65f38f15
AM		 5247/* Update the .got, .plt. and dynamic reloc reference counts for the
5248 section being removed. */
5bd4f169 5249
b34976b6 5250static bfd_boolean
4ce794b7
AM		 5251ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5252 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5253{
411e1bfb 5254 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5255 Elf_Internal_Shdr *symtab_hdr;
5256 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5257 struct got_entry **local_got_ents;
5bd4f169 5258 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5259
680a3378
AM		 5260 if ((sec->flags & SEC_ALLOC) == 0)
5261 return TRUE;
5262
ec338859
AM		 5263 elf_section_data (sec)->local_dynrel = NULL;
5264
411e1bfb 5265 htab = ppc_hash_table (info);
5bd4f169
AM		 5266 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5267 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5268 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5269
5270 relend = relocs + sec->reloc_count;
5271 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5272 {
5273 unsigned long r_symndx;
04c9666a 5274 enum elf_ppc64_reloc_type r_type;
58ac9f71 5275 struct elf_link_hash_entry *h = NULL;
411e1bfb 5276 char tls_type = 0;
5bd4f169 5277
a33d1f77 5278 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5279 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5280 if (r_symndx >= symtab_hdr->sh_info)
5281 {
5282 struct ppc_link_hash_entry *eh;
5283 struct ppc_dyn_relocs **pp;
5284 struct ppc_dyn_relocs *p;
5285
5286 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5287 while (h->root.type == bfd_link_hash_indirect
5288 || h->root.type == bfd_link_hash_warning)
5289 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5290 eh = (struct ppc_link_hash_entry *) h;
5291
5292 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5293 if (p->sec == sec)
5294 {
5295 /* Everything must go for SEC. */
5296 *pp = p->next;
5297 break;
5298 }
5299 }
5300
a33d1f77
AM		 5301 switch (r_type)
5302 {
411e1bfb
AM		 5303 case R_PPC64_GOT_TLSLD16:
5304 case R_PPC64_GOT_TLSLD16_LO:
5305 case R_PPC64_GOT_TLSLD16_HI:
5306 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5307 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5308 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5309 goto dogot;
5310
5311 case R_PPC64_GOT_TLSGD16:
5312 case R_PPC64_GOT_TLSGD16_LO:
5313 case R_PPC64_GOT_TLSGD16_HI:
5314 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5315 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5316 goto dogot;
5317
5318 case R_PPC64_GOT_TPREL16_DS:
5319 case R_PPC64_GOT_TPREL16_LO_DS:
5320 case R_PPC64_GOT_TPREL16_HI:
5321 case R_PPC64_GOT_TPREL16_HA:
5322 tls_type = TLS_TLS | TLS_TPREL;
5323 goto dogot;
5324
5325 case R_PPC64_GOT_DTPREL16_DS:
5326 case R_PPC64_GOT_DTPREL16_LO_DS:
5327 case R_PPC64_GOT_DTPREL16_HI:
5328 case R_PPC64_GOT_DTPREL16_HA:
5329 tls_type = TLS_TLS | TLS_DTPREL;
5330 goto dogot;
5331
a33d1f77
AM		 5332 case R_PPC64_GOT16:
5333 case R_PPC64_GOT16_DS:
5334 case R_PPC64_GOT16_HA:
5335 case R_PPC64_GOT16_HI:
5336 case R_PPC64_GOT16_LO:
5337 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5338 dogot:
5339 {
5340 struct got_entry *ent;
5341
58ac9f71
AM		 5342 if (h != NULL)
5343 ent = h->got.glist;
411e1bfb
AM		 5344 else
5345 ent = local_got_ents[r_symndx];
5346
5347 for (; ent != NULL; ent = ent->next)
5348 if (ent->addend == rel->r_addend
e717da7e 5349 && ent->owner == abfd
411e1bfb
AM		 5350 && ent->tls_type == tls_type)
5351 break;
5352 if (ent == NULL)
5353 abort ();
5354 if (ent->got.refcount > 0)
5355 ent->got.refcount -= 1;
5356 }
a33d1f77 5357 break;
65f38f15 5358
a33d1f77
AM		 5359 case R_PPC64_PLT16_HA:
5360 case R_PPC64_PLT16_HI:
5361 case R_PPC64_PLT16_LO:
5362 case R_PPC64_PLT32:
5363 case R_PPC64_PLT64:
721956f4
AM		 5364 case R_PPC64_REL14:
5365 case R_PPC64_REL14_BRNTAKEN:
5366 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5367 case R_PPC64_REL24:
58ac9f71 5368 if (h != NULL)
5d1634d7 5369 {
411e1bfb
AM		 5370 struct plt_entry *ent;
5371
411e1bfb
AM		 5372 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5373 if (ent->addend == rel->r_addend)
5374 break;
5375 if (ent == NULL)
5376 abort ();
5377 if (ent->plt.refcount > 0)
5378 ent->plt.refcount -= 1;
5d1634d7 5379 }
e86ce104 5380 break;
5d1634d7 5381
a33d1f77
AM		 5382 default:
5383 break;
5384 }
5385 }
b34976b6 5386 return TRUE;
5bd4f169
AM		 5387}
5388
deb0e272
AM		 5389/* The maximum size of .sfpr. */
5390#define SFPR_MAX (218*4)
5391
5392struct sfpr_def_parms
5393{
699733f6
AM		 5394 const char name[12];
5395 unsigned char lo, hi;
deb0e272
AM		 5396 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5397 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5398};
5399
5400/* Auto-generate _save*, _rest* functions in .sfpr. */
5401
5402static unsigned int
5403sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5404{
5405 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5406 unsigned int i;
5407 size_t len = strlen (parm->name);
5408 bfd_boolean writing = FALSE;
699733f6 5409 char sym[16];
deb0e272
AM		 5410
5411 memcpy (sym, parm->name, len);
5412 sym[len + 2] = 0;
5413
5414 for (i = parm->lo; i <= parm->hi; i++)
5415 {
5416 struct elf_link_hash_entry *h;
5417
5418 sym[len + 0] = i / 10 + '0';
5419 sym[len + 1] = i % 10 + '0';
5420 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5421 if (h != NULL
f5385ebf 5422 && !h->def_regular)
deb0e272
AM		 5423 {
5424 h->root.type = bfd_link_hash_defined;
5425 h->root.u.def.section = htab->sfpr;
5426 h->root.u.def.value = htab->sfpr->size;
5427 h->type = STT_FUNC;
f5385ebf 5428 h->def_regular = 1;
deb0e272
AM		 5429 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5430 writing = TRUE;
5431 if (htab->sfpr->contents == NULL)
5432 {
5433 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5434 if (htab->sfpr->contents == NULL)
5435 return FALSE;
5436 }
5437 }
5438 if (writing)
5439 {
5440 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5441 if (i != parm->hi)
5442 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5443 else
5444 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5445 htab->sfpr->size = p - htab->sfpr->contents;
5446 }
5447 }
5448
5449 return TRUE;
5450}
5451
5452static bfd_byte *
5453savegpr0 (bfd *abfd, bfd_byte *p, int r)
5454{
5455 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5456 return p + 4;
5457}
5458
5459static bfd_byte *
5460savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5461{
5462 p = savegpr0 (abfd, p, r);
5463 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5464 p = p + 4;
5465 bfd_put_32 (abfd, BLR, p);
5466 return p + 4;
5467}
5468
5469static bfd_byte *
5470restgpr0 (bfd *abfd, bfd_byte *p, int r)
5471{
5472 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5473 return p + 4;
5474}
5475
5476static bfd_byte *
5477restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5478{
5479 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5480 p = p + 4;
5481 p = restgpr0 (abfd, p, r);
5482 bfd_put_32 (abfd, MTLR_R0, p);
5483 p = p + 4;
5484 if (r == 29)
5485 {
5486 p = restgpr0 (abfd, p, 30);
5487 p = restgpr0 (abfd, p, 31);
5488 }
5489 bfd_put_32 (abfd, BLR, p);
5490 return p + 4;
5491}
5492
5493static bfd_byte *
5494savegpr1 (bfd *abfd, bfd_byte *p, int r)
5495{
5496 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5497 return p + 4;
5498}
5499
5500static bfd_byte *
5501savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5502{
5503 p = savegpr1 (abfd, p, r);
5504 bfd_put_32 (abfd, BLR, p);
5505 return p + 4;
5506}
5507
5508static bfd_byte *
5509restgpr1 (bfd *abfd, bfd_byte *p, int r)
5510{
5511 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5512 return p + 4;
5513}
5514
5515static bfd_byte *
5516restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5517{
5518 p = restgpr1 (abfd, p, r);
5519 bfd_put_32 (abfd, BLR, p);
5520 return p + 4;
5521}
5522
5523static bfd_byte *
5524savefpr (bfd *abfd, bfd_byte *p, int r)
5525{
5526 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5527 return p + 4;
5528}
5529
5530static bfd_byte *
5531savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5532{
5533 p = savefpr (abfd, p, r);
5534 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5535 p = p + 4;
5536 bfd_put_32 (abfd, BLR, p);
5537 return p + 4;
5538}
5539
5540static bfd_byte *
5541restfpr (bfd *abfd, bfd_byte *p, int r)
5542{
5543 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5544 return p + 4;
5545}
5546
5547static bfd_byte *
5548restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5549{
5550 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5551 p = p + 4;
5552 p = restfpr (abfd, p, r);
5553 bfd_put_32 (abfd, MTLR_R0, p);
5554 p = p + 4;
5555 if (r == 29)
5556 {
5557 p = restfpr (abfd, p, 30);
5558 p = restfpr (abfd, p, 31);
5559 }
5560 bfd_put_32 (abfd, BLR, p);
5561 return p + 4;
5562}
5563
5564static bfd_byte *
5565savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5566{
5567 p = savefpr (abfd, p, r);
5568 bfd_put_32 (abfd, BLR, p);
5569 return p + 4;
5570}
5571
5572static bfd_byte *
5573restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5574{
5575 p = restfpr (abfd, p, r);
5576 bfd_put_32 (abfd, BLR, p);
5577 return p + 4;
5578}
5579
5580static bfd_byte *
5581savevr (bfd *abfd, bfd_byte *p, int r)
5582{
5583 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5584 p = p + 4;
5585 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5586 return p + 4;
5587}
5588
5589static bfd_byte *
5590savevr_tail (bfd *abfd, bfd_byte *p, int r)
5591{
5592 p = savevr (abfd, p, r);
5593 bfd_put_32 (abfd, BLR, p);
5594 return p + 4;
5595}
5596
5597static bfd_byte *
5598restvr (bfd *abfd, bfd_byte *p, int r)
5599{
5600 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5601 p = p + 4;
5602 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5603 return p + 4;
5604}
5605
5606static bfd_byte *
5607restvr_tail (bfd *abfd, bfd_byte *p, int r)
5608{
5609 p = restvr (abfd, p, r);
5610 bfd_put_32 (abfd, BLR, p);
5611 return p + 4;
5612}
5613
e86ce104
AM		 5614/* Called via elf_link_hash_traverse to transfer dynamic linking
5615 information on function code symbol entries to their corresponding
5616 function descriptor symbol entries. */
deb0e272 5617
b34976b6 5618static bfd_boolean
4ce794b7 5619func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5620{
e86ce104 5621 struct bfd_link_info *info;
65f38f15 5622 struct ppc_link_hash_table *htab;
411e1bfb 5623 struct plt_entry *ent;
50bc7936
AM		 5624 struct ppc_link_hash_entry *fh;
5625 struct ppc_link_hash_entry *fdh;
5626 bfd_boolean force_local;
5bd4f169 5627
50bc7936
AM		 5628 fh = (struct ppc_link_hash_entry *) h;
5629 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5630 return TRUE;
e86ce104 5631
50bc7936
AM		 5632 if (fh->elf.root.type == bfd_link_hash_warning)
5633 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5634
4ce794b7 5635 info = inf;
65f38f15 5636 htab = ppc_hash_table (info);
5bd4f169 5637
c09bdfe5
AM		 5638 /* Resolve undefined references to dot-symbols as the value
5639 in the function descriptor, if we have one in a regular object.
5640 This is to satisfy cases like ".quad .foo". Calls to functions
5641 in dynamic objects are handled elsewhere. */
5642 if (fh->elf.root.type == bfd_link_hash_undefweak
5643 && fh->was_undefined
5644 && (fh->oh->elf.root.type == bfd_link_hash_defined
5645 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5646 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5647 && opd_entry_value (fh->oh->elf.root.u.def.section,
5648 fh->oh->elf.root.u.def.value,
5649 &fh->elf.root.u.def.section,
5650 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5651 {
5652 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5653 fh->elf.forced_local = 1;
2b953679
AM		 5654 fh->elf.def_regular = fh->oh->elf.def_regular;
5655 fh->elf.def_dynamic = fh->oh->elf.def_dynamic;
c09bdfe5
AM		 5656 }
5657
e86ce104
AM		 5658 /* If this is a function code symbol, transfer dynamic linking
5659 information to the function descriptor symbol. */
50bc7936 5660 if (!fh->is_func)
b34976b6 5661 return TRUE;
e86ce104 5662
50bc7936 5663 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5664 if (ent->plt.refcount > 0)
5665 break;
50bc7936
AM		 5666 if (ent == NULL
5667 || fh->elf.root.root.string[0] != '.'
5668 || fh->elf.root.root.string[1] == '\0')
5669 return TRUE;
5bd4f169 5670
50bc7936
AM		 5671 /* Find the corresponding function descriptor symbol. Create it
5672 as undefined if necessary. */
5bd4f169 5673
50bc7936
AM		 5674 fdh = get_fdh (fh, htab);
5675 if (fdh != NULL)
5676 while (fdh->elf.root.type == bfd_link_hash_indirect
5677 || fdh->elf.root.type == bfd_link_hash_warning)
5678 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5679
50bc7936
AM		 5680 if (fdh == NULL
5681 && info->shared
5682 && (fh->elf.root.type == bfd_link_hash_undefined
5683 || fh->elf.root.type == bfd_link_hash_undefweak))
5684 {
908b32fc 5685 fdh = make_fdh (info, fh);
bb700d78
AM		 5686 if (fdh == NULL)
5687 return FALSE;
50bc7936 5688 }
648cca2c 5689
908b32fc 5690 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5691 code symbol is strong undefined, make the fake sym the same.
5692 If the function code symbol is defined, then force the fake
5693 descriptor local; We can't support overriding of symbols in a
5694 shared library on a fake descriptor. */
908b32fc
AM		 5695
5696 if (fdh != NULL
5697 && fdh->fake
433817dd 5698 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5699 {
433817dd
AM		 5700 if (fh->elf.root.type == bfd_link_hash_undefined)
5701 {
5702 fdh->elf.root.type = bfd_link_hash_undefined;
5703 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5704 }
5705 else if (fh->elf.root.type == bfd_link_hash_defined
5706 || fh->elf.root.type == bfd_link_hash_defweak)
5707 {
5708 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5709 }
908b32fc
AM		 5710 }
5711
50bc7936 5712 if (fdh != NULL
f5385ebf 5713 && !fdh->elf.forced_local
50bc7936 5714 && (info->shared
f5385ebf
AM		 5715 || fdh->elf.def_dynamic
5716 || fdh->elf.ref_dynamic
50bc7936
AM		 5717 || (fdh->elf.root.type == bfd_link_hash_undefweak
5718 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5719 {
5720 if (fdh->elf.dynindx == -1)
c152c796 5721 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5722 return FALSE;
f5385ebf
AM		 5723 fdh->elf.ref_regular |= fh->elf.ref_regular;
5724 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5725 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5726 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5727 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5728 {
40d16e0b 5729 move_plt_plist (fh, fdh);
f5385ebf 5730 fdh->elf.needs_plt = 1;
e86ce104 5731 }
50bc7936 5732 fdh->is_func_descriptor = 1;
34814b9f
AM		 5733 fdh->oh = fh;
5734 fh->oh = fdh;
e86ce104
AM		 5735 }
5736
50bc7936
AM		 5737 /* Now that the info is on the function descriptor, clear the
5738 function code sym info. Any function code syms for which we
5739 don't have a definition in a regular file, we force local.
5740 This prevents a shared library from exporting syms that have
5741 been imported from another library. Function code syms that
5742 are really in the library we must leave global to prevent the
5743 linker dragging in a definition from a static library. */
93f3fa99
AM		 5744 force_local = (!fh->elf.def_regular
5745 || fdh == NULL
5746 || !fdh->elf.def_regular
5747 || fdh->elf.forced_local);
50bc7936
AM		 5748 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5749
b34976b6 5750 return TRUE;
e86ce104 5751}
40b8271b 5752
e86ce104 5753/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5754 this hook to a) provide some gcc support functions, and b) transfer
5755 dynamic linking information gathered so far on function code symbol
5756 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5757
b34976b6 5758static bfd_boolean
4ce794b7
AM		 5759ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5760 struct bfd_link_info *info)
e86ce104
AM		 5761{
5762 struct ppc_link_hash_table *htab;
82bd7b59 5763 unsigned int i;
deb0e272
AM		 5764 const struct sfpr_def_parms funcs[] =
5765 {
5766 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5767 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5768 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5769 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5770 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5771 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5772 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5773 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5774 { "._savef", 14, 31, savefpr, savefpr1_tail },
5775 { "._restf", 14, 31, restfpr, restfpr1_tail },
5776 { "_savevr_", 20, 31, savevr, savevr_tail },
5777 { "_restvr_", 20, 31, restvr, restvr_tail }
5778 };
e86ce104
AM		 5779
5780 htab = ppc_hash_table (info);
82bd7b59
AM		 5781 if (htab->sfpr == NULL)
5782 /* We don't have any relocs. */
b34976b6 5783 return TRUE;
82bd7b59 5784
deb0e272
AM		 5785 /* Provide any missing _save* and _rest* functions. */
5786 htab->sfpr->size = 0;
5787 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5788 if (!sfpr_define (info, &funcs[i]))
5789 return FALSE;
82bd7b59 5790
4ce794b7 5791 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5792
eea6121a 5793 if (htab->sfpr->size == 0)
8423293d 5794 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5795
b34976b6 5796 return TRUE;
e86ce104
AM		 5797}
5798
5799/* Adjust a symbol defined by a dynamic object and referenced by a
5800 regular object. The current definition is in some section of the
5801 dynamic object, but we're not including those sections. We have to
5802 change the definition to something the rest of the link can
5803 understand. */
5804
b34976b6 5805static bfd_boolean
4ce794b7
AM		 5806ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5807 struct elf_link_hash_entry *h)
e86ce104
AM		 5808{
5809 struct ppc_link_hash_table *htab;
e86ce104 5810 asection *s;
e86ce104
AM		 5811
5812 htab = ppc_hash_table (info);
5813
5814 /* Deal with function syms. */
5815 if (h->type == STT_FUNC
f5385ebf 5816 || h->needs_plt)
e86ce104
AM		 5817 {
5818 /* Clear procedure linkage table information for any symbol that
5819 won't need a .plt entry. */
411e1bfb
AM		 5820 struct plt_entry *ent;
5821 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5822 if (ent->plt.refcount > 0)
5823 break;
8387904d 5824 if (ent == NULL
9c7a29a3
AM		 5825 || SYMBOL_CALLS_LOCAL (info, h)
5826 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5827 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5828 {
411e1bfb 5829 h->plt.plist = NULL;
f5385ebf 5830 h->needs_plt = 0;
40b8271b 5831 }
5bd4f169 5832 }
bbd7ec4a 5833 else
411e1bfb 5834 h->plt.plist = NULL;
5bd4f169
AM		 5835
5836 /* If this is a weak symbol, and there is a real definition, the
5837 processor independent code will have arranged for us to see the
5838 real definition first, and we can just use the same value. */
f6e332e6 5839 if (h->u.weakdef != NULL)
5bd4f169 5840 {
f6e332e6
AM		 5841 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5842 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5843 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5844 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5845 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5846 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5847 return TRUE;
5bd4f169
AM		 5848 }
5849
5bd4f169
AM		 5850 /* If we are creating a shared library, we must presume that the
5851 only references to the symbol are via the global offset table.
5852 For such cases we need not do anything here; the relocations will
5853 be handled correctly by relocate_section. */
5854 if (info->shared)
b34976b6 5855 return TRUE;
5bd4f169 5856
65f38f15
AM		 5857 /* If there are no references to this symbol that do not use the
5858 GOT, we don't need to generate a copy reloc. */
f5385ebf 5859 if (!h->non_got_ref)
b34976b6 5860 return TRUE;
65f38f15 5861
b186458a
JJ		 5862 /* Don't generate a copy reloc for symbols defined in the executable. */
5863 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
5864 return TRUE;
5865
f4656909 5866 if (ELIMINATE_COPY_RELOCS)
65f38f15 5867 {
f4656909
AM		 5868 struct ppc_link_hash_entry * eh;
5869 struct ppc_dyn_relocs *p;
65f38f15 5870
f4656909
AM		 5871 eh = (struct ppc_link_hash_entry *) h;
5872 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5873 {
5874 s = p->sec->output_section;
5875 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5876 break;
5877 }
5878
5879 /* If we didn't find any dynamic relocs in read-only sections, then
5880 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5881 if (p == NULL)
5882 {
f5385ebf 5883 h->non_got_ref = 0;
f4656909
AM		 5884 return TRUE;
5885 }
65f38f15
AM		 5886 }
5887
5d35169e 5888 if (h->plt.plist != NULL)
97b639ba
AM		 5889 {
5890 /* We should never get here, but unfortunately there are versions
5891 of gcc out there that improperly (for this ABI) put initialized
5892 function pointers, vtable refs and suchlike in read-only
5893 sections. Allow them to proceed, but warn that this might
5894 break at runtime. */
5895 (*_bfd_error_handler)
5896 (_("copy reloc against `%s' requires lazy plt linking; "
5897 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5898 h->root.root.string);
5899 }
5d35169e
AM		 5900
5901 /* This is a reference to a symbol defined by a dynamic object which
5902 is not a function. */
5903
909272ee
AM		 5904 if (h->size == 0)
5905 {
5906 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5907 h->root.root.string);
5908 return TRUE;
5909 }
5910
5bd4f169
AM		 5911 /* We must allocate the symbol in our .dynbss section, which will
5912 become part of the .bss section of the executable. There will be
5913 an entry for this symbol in the .dynsym section. The dynamic
5914 object will contain position independent code, so all references
5915 from the dynamic object to this symbol will go through the global
5916 offset table. The dynamic linker will use the .dynsym entry to
5917 determine the address it must put in the global offset table, so
5918 both the dynamic object and the regular object will refer to the
5919 same memory location for the variable. */
5bd4f169 5920
04c9666a
AM		 5921 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5922 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5923 runtime process image. We need to remember the offset into the
5924 .rela.bss section we are going to use. */
5925 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5926 {
eea6121a 5927 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5928 h->needs_copy = 1;
5bd4f169
AM		 5929 }
5930
4ce794b7 5931 s = htab->dynbss;
5bd4f169 5932
027297b7 5933 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 5934}
5935
e86ce104
AM		 5936/* If given a function descriptor symbol, hide both the function code
5937 sym and the descriptor. */
5938static void
4ce794b7
AM		 5939ppc64_elf_hide_symbol (struct bfd_link_info *info,
5940 struct elf_link_hash_entry *h,
5941 bfd_boolean force_local)
e86ce104 5942{
34814b9f 5943 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5944 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5945
34814b9f
AM		 5946 eh = (struct ppc_link_hash_entry *) h;
5947 if (eh->is_func_descriptor)
e86ce104 5948 {
34814b9f 5949 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5950
721956f4 5951 if (fh == NULL)
d1329ca3
AM		 5952 {
5953 const char *p, *q;
5954 struct ppc_link_hash_table *htab;
5955 char save;
5956
5957 /* We aren't supposed to use alloca in BFD because on
5958 systems which do not have alloca the version in libiberty
5959 calls xmalloc, which might cause the program to crash
5960 when it runs out of memory. This function doesn't have a
5961 return status, so there's no way to gracefully return an
5962 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5963 accessed; It's either a string in an ELF string table,
5964 or allocated in an objalloc structure. */
d1329ca3 5965
34814b9f 5966 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5967 save = *p;
5968 *(char *) p = '.';
5969 htab = ppc_hash_table (info);
34814b9f
AM		 5970 fh = (struct ppc_link_hash_entry *)
5971 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5972 *(char *) p = save;
5973
5974 /* Unfortunately, if it so happens that the string we were
5975 looking for was allocated immediately before this string,
5976 then we overwrote the string terminator. That's the only
5977 reason the lookup should fail. */
5978 if (fh == NULL)
5979 {
34814b9f
AM		 5980 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5981 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5982 --q, --p;
34814b9f
AM		 5983 if (q < eh->elf.root.root.string && *p == '.')
5984 fh = (struct ppc_link_hash_entry *)
5985 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5986 }
5987 if (fh != NULL)
5988 {
34814b9f
AM		 5989 eh->oh = fh;
5990 fh->oh = eh;
d1329ca3
AM		 5991 }
5992 }
e86ce104 5993 if (fh != NULL)
34814b9f 5994 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5995 }
5996}
5997
411e1bfb 5998static bfd_boolean
8843416a
AM		 5999get_sym_h (struct elf_link_hash_entry **hp,
6000 Elf_Internal_Sym **symp,
6001 asection **symsecp,
6002 char **tls_maskp,
6003 Elf_Internal_Sym **locsymsp,
6004 unsigned long r_symndx,
6005 bfd *ibfd)
411e1bfb
AM		 6006{
6007 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6008
6009 if (r_symndx >= symtab_hdr->sh_info)
6010 {
6011 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6012 struct elf_link_hash_entry *h;
6013
6014 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6015 while (h->root.type == bfd_link_hash_indirect
6016 || h->root.type == bfd_link_hash_warning)
6017 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6018
6019 if (hp != NULL)
6020 *hp = h;
6021
6022 if (symp != NULL)
6023 *symp = NULL;
6024
6025 if (symsecp != NULL)
6026 {
6027 asection *symsec = NULL;
6028 if (h->root.type == bfd_link_hash_defined
6029 || h->root.type == bfd_link_hash_defweak)
6030 symsec = h->root.u.def.section;
6031 *symsecp = symsec;
6032 }
6033
e7b938ca 6034 if (tls_maskp != NULL)
411e1bfb
AM		 6035 {
6036 struct ppc_link_hash_entry *eh;
6037
6038 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6039 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 6040 }
6041 }
6042 else
6043 {
6044 Elf_Internal_Sym *sym;
6045 Elf_Internal_Sym *locsyms = *locsymsp;
6046
6047 if (locsyms == NULL)
6048 {
6049 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6050 if (locsyms == NULL)
6051 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6052 symtab_hdr->sh_info,
6053 0, NULL, NULL, NULL);
6054 if (locsyms == NULL)
6055 return FALSE;
6056 *locsymsp = locsyms;
6057 }
6058 sym = locsyms + r_symndx;
6059
6060 if (hp != NULL)
6061 *hp = NULL;
6062
6063 if (symp != NULL)
6064 *symp = sym;
6065
6066 if (symsecp != NULL)
6067 {
6068 asection *symsec = NULL;
6069 if ((sym->st_shndx != SHN_UNDEF
6070 && sym->st_shndx < SHN_LORESERVE)
6071 || sym->st_shndx > SHN_HIRESERVE)
6072 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6073 *symsecp = symsec;
6074 }
6075
e7b938ca 6076 if (tls_maskp != NULL)
411e1bfb
AM		 6077 {
6078 struct got_entry **lgot_ents;
e7b938ca 6079 char *tls_mask;
411e1bfb 6080
e7b938ca 6081 tls_mask = NULL;
411e1bfb
AM		 6082 lgot_ents = elf_local_got_ents (ibfd);
6083 if (lgot_ents != NULL)
6084 {
e7b938ca
AM		 6085 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6086 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6087 }
e7b938ca 6088 *tls_maskp = tls_mask;
411e1bfb
AM		 6089 }
6090 }
6091 return TRUE;
6092}
6093
e7b938ca 6094/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6095 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6096 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 6097
6098static int
0d4792f7
AM		 6099get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6100 Elf_Internal_Sym **locsymsp,
4ce794b7 6101 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 6102{
6103 unsigned long r_symndx;
0d4792f7 6104 int next_r;
411e1bfb
AM		 6105 struct elf_link_hash_entry *h;
6106 Elf_Internal_Sym *sym;
6107 asection *sec;
6108 bfd_vma off;
6109
6110 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6111 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6112 return 0;
411e1bfb 6113
e7b938ca 6114 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6115 || sec == NULL
7c8fe5c4 6116 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6117 return 1;
411e1bfb
AM		 6118
6119 /* Look inside a TOC section too. */
6120 if (h != NULL)
6121 {
6122 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6123 off = h->root.u.def.value;
6124 }
6125 else
6126 off = sym->st_value;
6127 off += rel->r_addend;
6128 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM		 6129 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6130 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6131 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6132 return 0;
0d4792f7
AM		 6133 if (toc_symndx != NULL)
6134 *toc_symndx = r_symndx;
6135 if ((h == NULL
6136 || ((h->root.type == bfd_link_hash_defined
6137 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6138 && !h->def_dynamic))
0d4792f7
AM		 6139 && (next_r == -1 || next_r == -2))
6140 return 1 - next_r;
951fd09b 6141 return 1;
411e1bfb
AM		 6142}
6143
754021d0 6144/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6145 code for the old ABI, these will already have been done. */
754021d0
AM		 6146
6147static bfd_boolean
6148adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6149{
6150 struct ppc_link_hash_entry *eh;
6151 asection *sym_sec;
6152 long *opd_adjust;
6153
6154 if (h->root.type == bfd_link_hash_indirect)
6155 return TRUE;
6156
6157 if (h->root.type == bfd_link_hash_warning)
6158 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6159
6160 if (h->root.type != bfd_link_hash_defined
6161 && h->root.type != bfd_link_hash_defweak)
6162 return TRUE;
6163
6164 eh = (struct ppc_link_hash_entry *) h;
6165 if (eh->adjust_done)
6166 return TRUE;
6167
6168 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 6169 opd_adjust = get_opd_info (sym_sec);
6170 if (opd_adjust != NULL)
754021d0 6171 {
3f764659 6172 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6173 if (adjust == -1)
6174 {
6175 /* This entry has been deleted. */
b3fac117 6176 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 6177 if (dsec == NULL)
6178 {
6179 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6180 if (elf_discarded_section (dsec))
6181 {
b3fac117 6182 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 6183 break;
6184 }
6185 }
4025353c 6186 eh->elf.root.u.def.value = 0;
81688140 6187 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6188 }
6189 else
6190 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6191 eh->adjust_done = 1;
6192 }
6193 return TRUE;
6194}
6195
8c1d1bb8
AM		 6196/* Handles decrementing dynamic reloc counts for the reloc specified by
6197 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6198 have already been determined. */
6199
6200static bfd_boolean
6201dec_dynrel_count (bfd_vma r_info,
6202 asection *sec,
6203 struct bfd_link_info *info,
6204 Elf_Internal_Sym **local_syms,
6205 struct elf_link_hash_entry *h,
6206 asection *sym_sec)
6207{
6208 enum elf_ppc64_reloc_type r_type;
6209 struct ppc_dyn_relocs *p;
6210 struct ppc_dyn_relocs **pp;
6211
6212 /* Can this reloc be dynamic? This switch, and later tests here
6213 should be kept in sync with the code in check_relocs. */
6214 r_type = ELF64_R_TYPE (r_info);
6215 switch (r_type)
6216 {
6217 default:
6218 return TRUE;
6219
6220 case R_PPC64_TPREL16:
6221 case R_PPC64_TPREL16_LO:
6222 case R_PPC64_TPREL16_HI:
6223 case R_PPC64_TPREL16_HA:
6224 case R_PPC64_TPREL16_DS:
6225 case R_PPC64_TPREL16_LO_DS:
6226 case R_PPC64_TPREL16_HIGHER:
6227 case R_PPC64_TPREL16_HIGHERA:
6228 case R_PPC64_TPREL16_HIGHEST:
6229 case R_PPC64_TPREL16_HIGHESTA:
6230 if (!info->shared)
6231 return TRUE;
6232
6233 case R_PPC64_TPREL64:
6234 case R_PPC64_DTPMOD64:
6235 case R_PPC64_DTPREL64:
6236 case R_PPC64_ADDR64:
6237 case R_PPC64_REL30:
6238 case R_PPC64_REL32:
6239 case R_PPC64_REL64:
6240 case R_PPC64_ADDR14:
6241 case R_PPC64_ADDR14_BRNTAKEN:
6242 case R_PPC64_ADDR14_BRTAKEN:
6243 case R_PPC64_ADDR16:
6244 case R_PPC64_ADDR16_DS:
6245 case R_PPC64_ADDR16_HA:
6246 case R_PPC64_ADDR16_HI:
6247 case R_PPC64_ADDR16_HIGHER:
6248 case R_PPC64_ADDR16_HIGHERA:
6249 case R_PPC64_ADDR16_HIGHEST:
6250 case R_PPC64_ADDR16_HIGHESTA:
6251 case R_PPC64_ADDR16_LO:
6252 case R_PPC64_ADDR16_LO_DS:
6253 case R_PPC64_ADDR24:
6254 case R_PPC64_ADDR32:
6255 case R_PPC64_UADDR16:
6256 case R_PPC64_UADDR32:
6257 case R_PPC64_UADDR64:
6258 case R_PPC64_TOC:
6259 break;
6260 }
6261
6262 if (local_syms != NULL)
6263 {
6264 unsigned long r_symndx;
6265 Elf_Internal_Sym *sym;
6266 bfd *ibfd = sec->owner;
6267
6268 r_symndx = ELF64_R_SYM (r_info);
6269 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6270 return FALSE;
6271 }
6272
6273 if ((info->shared
6274 && (MUST_BE_DYN_RELOC (r_type)
6275 || (h != NULL
6276 && (!info->symbolic
6277 || h->root.type == bfd_link_hash_defweak
6278 || !h->def_regular))))
6279 || (ELIMINATE_COPY_RELOCS
6280 && !info->shared
6281 && h != NULL
6282 && (h->root.type == bfd_link_hash_defweak
6283 || !h->def_regular)))
6284 ;
6285 else
6286 return TRUE;
6287
6288 if (h != NULL)
6289 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6290 else
6edfbbad 6291 {
60124e18
AM		 6292 if (sym_sec != NULL)
6293 {
6294 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6295 pp = (struct ppc_dyn_relocs **) vpp;
6296 }
6297 else
6298 {
6299 void *vpp = &elf_section_data (sec)->local_dynrel;
6300 pp = (struct ppc_dyn_relocs **) vpp;
6301 }
6302
6303 /* elf_gc_sweep may have already removed all dyn relocs associated
6304 with local syms for a given section. Don't report a dynreloc
6305 miscount. */
6306 if (*pp == NULL)
6307 return TRUE;
6edfbbad 6308 }
8c1d1bb8
AM		 6309
6310 while ((p = *pp) != NULL)
6311 {
6312 if (p->sec == sec)
6313 {
6314 if (!MUST_BE_DYN_RELOC (r_type))
6315 p->pc_count -= 1;
6316 p->count -= 1;
6317 if (p->count == 0)
6318 *pp = p->next;
6319 return TRUE;
6320 }
6321 pp = &p->next;
6322 }
6323
6324 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6325 sec->owner, sec);
6326 bfd_set_error (bfd_error_bad_value);
6327 return FALSE;
6328}
6329
754021d0
AM		 6330/* Remove unused Official Procedure Descriptor entries. Currently we
6331 only remove those associated with functions in discarded link-once
6332 sections, or weakly defined functions that have been overridden. It
6333 would be possible to remove many more entries for statically linked
6334 applications. */
6335
b34976b6 6336bfd_boolean
3f764659 6337ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6338 bfd_boolean no_opd_opt,
3f764659 6339 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6340{
6341 bfd *ibfd;
754021d0 6342 bfd_boolean some_edited = FALSE;
3f764659 6343 asection *need_pad = NULL;
1e2f5b6e 6344
411e1bfb 6345 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6346 {
6347 asection *sec;
6348 Elf_Internal_Rela *relstart, *rel, *relend;
6349 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6350 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6351 struct elf_link_hash_entry **sym_hashes;
6352 bfd_vma offset;
d6fe2dc1 6353 bfd_size_type amt;
4025353c 6354 long *opd_adjust;
3f764659
JJ		 6355 bfd_boolean need_edit, add_aux_fields;
6356 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6357
6358 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6359 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6360 continue;
6361
3f764659 6362 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6363 opd_adjust = get_opd_info (sec);
6364 if (opd_adjust == NULL)
d6fe2dc1 6365 {
4b85d634
AM		 6366 /* check_relocs hasn't been called. Must be a ld -r link
6367 or --just-symbols object. */
b4f4e59f 6368 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM		 6369 if (opd_adjust == NULL)
6370 return FALSE;
7c8fe5c4
AM		 6371 ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust;
6372 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
6373 ppc64_elf_section_data (sec)->sec_type = sec_opd;
d6fe2dc1 6374 }
4025353c 6375 memset (opd_adjust, 0, amt);
1e2f5b6e 6376
b4f4e59f
AM		 6377 if (no_opd_opt)
6378 continue;
6379
4b85d634
AM		 6380 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6381 continue;
6382
1e2f5b6e
AM		 6383 if (sec->output_section == bfd_abs_section_ptr)
6384 continue;
6385
6386 /* Look through the section relocs. */
6387 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6388 continue;
6389
6cdc0ccc 6390 local_syms = NULL;
1e2f5b6e
AM		 6391 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6392 sym_hashes = elf_sym_hashes (ibfd);
6393
6394 /* Read the relocations. */
4ce794b7 6395 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6396 info->keep_memory);
1e2f5b6e 6397 if (relstart == NULL)
b34976b6 6398 return FALSE;
1e2f5b6e
AM		 6399
6400 /* First run through the relocs to check they are sane, and to
6401 determine whether we need to edit this opd section. */
b34976b6 6402 need_edit = FALSE;
3f764659 6403 need_pad = sec;
1e2f5b6e
AM		 6404 offset = 0;
6405 relend = relstart + sec->reloc_count;
50bc7936 6406 for (rel = relstart; rel < relend; )
1e2f5b6e 6407 {
04c9666a 6408 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6409 unsigned long r_symndx;
6410 asection *sym_sec;
6411 struct elf_link_hash_entry *h;
6412 Elf_Internal_Sym *sym;
6413
3f764659 6414 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6415 only interested in the reloc pointing to a function entry
6416 point. */
50bc7936
AM		 6417 if (rel->r_offset != offset
6418 || rel + 1 >= relend
6419 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6420 {
6421 /* If someone messes with .opd alignment then after a
6422 "ld -r" we might have padding in the middle of .opd.
6423 Also, there's nothing to prevent someone putting
6424 something silly in .opd with the assembler. No .opd
b34976b6 6425 optimization for them! */
3f764659 6426 broken_opd:
1e2f5b6e 6427 (*_bfd_error_handler)
d003868e 6428 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6429 need_edit = FALSE;
1e2f5b6e
AM		 6430 break;
6431 }
6432
50bc7936
AM		 6433 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6434 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6435 {
6436 (*_bfd_error_handler)
d003868e
AM		 6437 (_("%B: unexpected reloc type %u in .opd section"),
6438 ibfd, r_type);
50bc7936
AM		 6439 need_edit = FALSE;
6440 break;
6441 }
6442
1e2f5b6e 6443 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6444 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6445 r_symndx, ibfd))
50bc7936 6446 goto error_ret;
1e2f5b6e
AM		 6447
6448 if (sym_sec == NULL || sym_sec->owner == NULL)
6449 {
411e1bfb
AM		 6450 const char *sym_name;
6451 if (h != NULL)
6452 sym_name = h->root.root.string;
6453 else
26c61ae5
L		 6454 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6455 sym_sec);
411e1bfb 6456
1e2f5b6e 6457 (*_bfd_error_handler)
d003868e
AM		 6458 (_("%B: undefined sym `%s' in .opd section"),
6459 ibfd, sym_name);
b34976b6 6460 need_edit = FALSE;
1e2f5b6e
AM		 6461 break;
6462 }
6463
51020317
AM		 6464 /* opd entries are always for functions defined in the
6465 current input bfd. If the symbol isn't defined in the
6466 input bfd, then we won't be using the function in this
6467 bfd; It must be defined in a linkonce section in another
6468 bfd, or is weak. It's also possible that we are
6469 discarding the function due to a linker script /DISCARD/,
6470 which we test for via the output_section. */
6471 if (sym_sec->owner != ibfd
6472 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6473 need_edit = TRUE;
1e2f5b6e 6474
50bc7936 6475 rel += 2;
3f764659
JJ		 6476 if (rel == relend
6477 || (rel + 1 == relend && rel->r_offset == offset + 16))
6478 {
6479 if (sec->size == offset + 24)
6480 {
6481 need_pad = NULL;
6482 break;
6483 }
6484 if (rel == relend && sec->size == offset + 16)
6485 {
6486 cnt_16b++;
6487 break;
6488 }
6489 goto broken_opd;
6490 }
6491
6492 if (rel->r_offset == offset + 24)
6493 offset += 24;
6494 else if (rel->r_offset != offset + 16)
6495 goto broken_opd;
6496 else if (rel + 1 < relend
6497 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6498 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6499 {
6500 offset += 16;
6501 cnt_16b++;
6502 }
6503 else if (rel + 2 < relend
6504 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6505 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6506 {
6507 offset += 24;
6508 rel += 1;
6509 }
6510 else
6511 goto broken_opd;
1e2f5b6e
AM		 6512 }
6513
3f764659
JJ		 6514 add_aux_fields = non_overlapping && cnt_16b > 0;
6515
6516 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6517 {
6518 Elf_Internal_Rela *write_rel;
6519 bfd_byte *rptr, *wptr;
3f764659 6520 bfd_byte *new_contents = NULL;
b34976b6 6521 bfd_boolean skip;
3f764659 6522 long opd_ent_size;
1e2f5b6e
AM		 6523
6524 /* This seems a waste of time as input .opd sections are all
6525 zeros as generated by gcc, but I suppose there's no reason
6526 this will always be so. We might start putting something in
6527 the third word of .opd entries. */
6528 if ((sec->flags & SEC_IN_MEMORY) == 0)
6529 {
eea6121a
AM		 6530 bfd_byte *loc;
6531 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6532 {
eea6121a
AM		 6533 if (loc != NULL)
6534 free (loc);
50bc7936 6535 error_ret:
6cdc0ccc
AM		 6536 if (local_syms != NULL
6537 && symtab_hdr->contents != (unsigned char *) local_syms)
6538 free (local_syms);
6cdc0ccc
AM		 6539 if (elf_section_data (sec)->relocs != relstart)
6540 free (relstart);
b34976b6 6541 return FALSE;
6cdc0ccc 6542 }
1e2f5b6e
AM		 6543 sec->contents = loc;
6544 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6545 }
6546
6547 elf_section_data (sec)->relocs = relstart;
6548
3f764659 6549 new_contents = sec->contents;
3f764659
JJ		 6550 if (add_aux_fields)
6551 {
6552 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6553 if (new_contents == NULL)
6554 return FALSE;
6555 need_pad = FALSE;
3f764659 6556 }
b4f4e59f
AM		 6557 wptr = new_contents;
6558 rptr = sec->contents;
3f764659 6559
1e2f5b6e 6560 write_rel = relstart;
b34976b6 6561 skip = FALSE;
1e2f5b6e 6562 offset = 0;
3f764659 6563 opd_ent_size = 0;
1e2f5b6e
AM		 6564 for (rel = relstart; rel < relend; rel++)
6565 {
50bc7936
AM		 6566 unsigned long r_symndx;
6567 asection *sym_sec;
6568 struct elf_link_hash_entry *h;
6569 Elf_Internal_Sym *sym;
6570
6571 r_symndx = ELF64_R_SYM (rel->r_info);
6572 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6573 r_symndx, ibfd))
50bc7936
AM		 6574 goto error_ret;
6575
1e2f5b6e
AM		 6576 if (rel->r_offset == offset)
6577 {
50bc7936 6578 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6579
6580 /* See if the .opd entry is full 24 byte or
6581 16 byte (with fd_aux entry overlapped with next
6582 fd_func). */
6583 opd_ent_size = 24;
6584 if ((rel + 2 == relend && sec->size == offset + 16)
6585 || (rel + 3 < relend
6586 && rel[2].r_offset == offset + 16
6587 && rel[3].r_offset == offset + 24
6588 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6589 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6590 opd_ent_size = 16;
6591
4025353c
AM		 6592 if (h != NULL
6593 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6594 {
6595 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6596 ppc_hash_table (info));
6597 if (fdh != NULL
6598 && fdh->elf.root.type != bfd_link_hash_defined
6599 && fdh->elf.root.type != bfd_link_hash_defweak)
6600 fdh = NULL;
6601 }
1e2f5b6e 6602
51020317
AM		 6603 skip = (sym_sec->owner != ibfd
6604 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6605 if (skip)
6606 {
4025353c 6607 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6608 {
6609 /* Arrange for the function descriptor sym
6610 to be dropped. */
d6fe2dc1
AM		 6611 fdh->elf.root.u.def.value = 0;
6612 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6613 }
3f764659 6614 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6615 }
6616 else
1e2f5b6e
AM		 6617 {
6618 /* We'll be keeping this opd entry. */
6619
4025353c 6620 if (fdh != NULL)
1e2f5b6e 6621 {
754021d0
AM		 6622 /* Redefine the function descriptor symbol to
6623 this location in the opd section. It is
6624 necessary to update the value here rather
6625 than using an array of adjustments as we do
6626 for local symbols, because various places
6627 in the generic ELF code use the value
6628 stored in u.def.value. */
3f764659 6629 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6630 fdh->adjust_done = 1;
1e2f5b6e 6631 }
754021d0
AM		 6632
6633 /* Local syms are a bit tricky. We could
6634 tweak them as they can be cached, but
6635 we'd need to look through the local syms
6636 for the function descriptor sym which we
6637 don't have at the moment. So keep an
6638 array of adjustments. */
3f764659
JJ		 6639 opd_adjust[rel->r_offset / 8]
6640 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6641
6642 if (wptr != rptr)
3f764659
JJ		 6643 memcpy (wptr, rptr, opd_ent_size);
6644 wptr += opd_ent_size;
6645 if (add_aux_fields && opd_ent_size == 16)
6646 {
6647 memset (wptr, '\0', 8);
6648 wptr += 8;
6649 }
1e2f5b6e 6650 }
3f764659
JJ		 6651 rptr += opd_ent_size;
6652 offset += opd_ent_size;
1e2f5b6e
AM		 6653 }
6654
50bc7936
AM		 6655 if (skip)
6656 {
60124e18
AM		 6657 if (!NO_OPD_RELOCS
6658 && !info->relocatable
18d944df
AM		 6659 && !dec_dynrel_count (rel->r_info, sec, info,
6660 NULL, h, sym_sec))
8c1d1bb8 6661 goto error_ret;
50bc7936
AM		 6662 }
6663 else
1e2f5b6e 6664 {
50bc7936
AM		 6665 /* We need to adjust any reloc offsets to point to the
6666 new opd entries. While we're at it, we may as well
6667 remove redundant relocs. */
3f764659 6668 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6669 if (write_rel != rel)
6670 memcpy (write_rel, rel, sizeof (*rel));
6671 ++write_rel;
6672 }
6673 }
6674
3f764659 6675 sec->size = wptr - new_contents;
1e2f5b6e 6676 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6677 if (add_aux_fields)
6678 {
6679 free (sec->contents);
6680 sec->contents = new_contents;
6681 }
6682
05bf9422 6683 /* Fudge the header size too, as this is used later in
cdcf6e38
AM		 6684 elf_bfd_final_link if we are emitting relocs. */
6685 elf_section_data (sec)->rel_hdr.sh_size
6686 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6687 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6688 some_edited = TRUE;
1e2f5b6e 6689 }
6cdc0ccc 6690 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6691 free (relstart);
6cdc0ccc 6692
411e1bfb
AM		 6693 if (local_syms != NULL
6694 && symtab_hdr->contents != (unsigned char *) local_syms)
6695 {
6696 if (!info->keep_memory)
6697 free (local_syms);
6698 else
6699 symtab_hdr->contents = (unsigned char *) local_syms;
6700 }
6701 }
6702
754021d0
AM		 6703 if (some_edited)
6704 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6705
3f764659
JJ		 6706 /* If we are doing a final link and the last .opd entry is just 16 byte
6707 long, add a 8 byte padding after it. */
6708 if (need_pad != NULL && !info->relocatable)
6709 {
6710 bfd_byte *p;
6711
6712 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6713 {
6714 BFD_ASSERT (need_pad->size > 0);
6715
6716 p = bfd_malloc (need_pad->size + 8);
6717 if (p == NULL)
6718 return FALSE;
699733f6 6719
3f764659
JJ		 6720 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6721 p, 0, need_pad->size))
6722 return FALSE;
6723
6724 need_pad->contents = p;
6725 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6726 }
6727 else
6728 {
6729 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6730 if (p == NULL)
6731 return FALSE;
6732
6733 need_pad->contents = p;
6734 }
6735
6736 memset (need_pad->contents + need_pad->size, 0, 8);
6737 need_pad->size += 8;
6738 }
6739
411e1bfb
AM		 6740 return TRUE;
6741}
6742
e1918d23 6743/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6744
e1918d23 6745asection *
4ce794b7 6746ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6747{
411e1bfb
AM		 6748 struct ppc_link_hash_table *htab;
6749
411e1bfb 6750 htab = ppc_hash_table (info);
a48ebf4d
AM		 6751 if (htab->tls_get_addr != NULL)
6752 {
8387904d 6753 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6754
8387904d
AM		 6755 while (h->elf.root.type == bfd_link_hash_indirect
6756 || h->elf.root.type == bfd_link_hash_warning)
6757 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6758
6759 htab->tls_get_addr = h;
8387904d
AM		 6760
6761 if (htab->tls_get_addr_fd == NULL
6762 && h->oh != NULL
c4f68ce3
AM		 6763 && h->oh->is_func_descriptor
6764 && (h->oh->elf.root.type == bfd_link_hash_defined
6765 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6766 htab->tls_get_addr_fd = h->oh;
6767 }
6768
6769 if (htab->tls_get_addr_fd != NULL)
6770 {
6771 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6772
6773 while (h->elf.root.type == bfd_link_hash_indirect
6774 || h->elf.root.type == bfd_link_hash_warning)
6775 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6776
6777 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6778 }
6779
e1918d23 6780 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6781}
411e1bfb 6782
951fd09b
AM		 6783/* Run through all the TLS relocs looking for optimization
6784 opportunities. The linker has been hacked (see ppc64elf.em) to do
6785 a preliminary section layout so that we know the TLS segment
6786 offsets. We can't optimize earlier because some optimizations need
6787 to know the tp offset, and we need to optimize before allocating
6788 dynamic relocations. */
6789
6790bfd_boolean
4ce794b7 6791ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6792{
6793 bfd *ibfd;
6794 asection *sec;
6795 struct ppc_link_hash_table *htab;
6796
1049f94e 6797 if (info->relocatable || info->shared)
411e1bfb
AM		 6798 return TRUE;
6799
951fd09b 6800 htab = ppc_hash_table (info);
411e1bfb
AM		 6801 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6802 {
6803 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM		 6804 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6805 unsigned char *toc_ref = NULL;
411e1bfb 6806
30038c59
AM		 6807 /* Look at all the sections for this file, with TOC last. */
6808 for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next
6809 : ibfd->sections);
6810 sec != NULL;
6811 sec = (sec == toc ? NULL
6812 : sec->next == NULL ? toc
6813 : sec->next == toc && toc->next ? toc->next
6814 : sec->next))
411e1bfb
AM		 6815 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6816 {
6817 Elf_Internal_Rela *relstart, *rel, *relend;
6818 int expecting_tls_get_addr;
30038c59 6819 long toc_ref_index = 0;
411e1bfb
AM		 6820
6821 /* Read the relocations. */
4ce794b7 6822 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6823 info->keep_memory);
411e1bfb
AM		 6824 if (relstart == NULL)
6825 return FALSE;
6826
6827 expecting_tls_get_addr = 0;
6828 relend = relstart + sec->reloc_count;
6829 for (rel = relstart; rel < relend; rel++)
6830 {
6831 enum elf_ppc64_reloc_type r_type;
6832 unsigned long r_symndx;
6833 struct elf_link_hash_entry *h;
6834 Elf_Internal_Sym *sym;
6835 asection *sym_sec;
e7b938ca
AM		 6836 char *tls_mask;
6837 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6838 bfd_vma value;
951fd09b 6839 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6840
6841 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6842 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6843 r_symndx, ibfd))
6844 {
6845 err_free_rel:
6846 if (elf_section_data (sec)->relocs != relstart)
6847 free (relstart);
30038c59
AM		 6848 if (toc_ref != NULL)
6849 free (toc_ref);
411e1bfb
AM		 6850 if (locsyms != NULL
6851 && (elf_tdata (ibfd)->symtab_hdr.contents
6852 != (unsigned char *) locsyms))
6853 free (locsyms);
6854 return FALSE;
6855 }
6856
6857 if (h != NULL)
6858 {
6859 if (h->root.type != bfd_link_hash_defined
6860 && h->root.type != bfd_link_hash_defweak)
6861 continue;
6862 value = h->root.u.def.value;
6863 }
6864 else
4025353c
AM		 6865 /* Symbols referenced by TLS relocs must be of type
6866 STT_TLS. So no need for .opd local sym adjust. */
6867 value = sym->st_value;
951fd09b 6868
411e1bfb 6869 ok_tprel = FALSE;
951fd09b
AM		 6870 is_local = FALSE;
6871 if (h == NULL
f5385ebf 6872 || !h->def_dynamic)
411e1bfb 6873 {
951fd09b 6874 is_local = TRUE;
411e1bfb
AM		 6875 value += sym_sec->output_offset;
6876 value += sym_sec->output_section->vma;
e1918d23 6877 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6878 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6879 < (bfd_vma) 1 << 32);
6880 }
6881
4ce794b7 6882 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6883 switch (r_type)
6884 {
6885 case R_PPC64_GOT_TLSLD16:
6886 case R_PPC64_GOT_TLSLD16_LO:
6887 case R_PPC64_GOT_TLSLD16_HI:
6888 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6889 /* These relocs should never be against a symbol
6890 defined in a shared lib. Leave them alone if
6891 that turns out to be the case. */
e717da7e 6892 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6893 if (!is_local)
6894 continue;
6895
951fd09b
AM		 6896 /* LD -> LE */
6897 tls_set = 0;
6898 tls_clear = TLS_LD;
e7b938ca 6899 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6900 expecting_tls_get_addr = 1;
6901 break;
6902
6903 case R_PPC64_GOT_TLSGD16:
6904 case R_PPC64_GOT_TLSGD16_LO:
6905 case R_PPC64_GOT_TLSGD16_HI:
6906 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6907 if (ok_tprel)
411e1bfb
AM		 6908 /* GD -> LE */
6909 tls_set = 0;
6910 else
6911 /* GD -> IE */
951fd09b
AM		 6912 tls_set = TLS_TLS | TLS_TPRELGD;
6913 tls_clear = TLS_GD;
e7b938ca 6914 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6915 expecting_tls_get_addr = 1;
6916 break;
6917
6918 case R_PPC64_GOT_TPREL16_DS:
6919 case R_PPC64_GOT_TPREL16_LO_DS:
6920 case R_PPC64_GOT_TPREL16_HI:
6921 case R_PPC64_GOT_TPREL16_HA:
6922 expecting_tls_get_addr = 0;
6923 if (ok_tprel)
6924 {
6925 /* IE -> LE */
6926 tls_set = 0;
6927 tls_clear = TLS_TPREL;
e7b938ca 6928 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6929 break;
6930 }
6931 else
6932 continue;
6933
6934 case R_PPC64_REL14:
6935 case R_PPC64_REL14_BRTAKEN:
6936 case R_PPC64_REL14_BRNTAKEN:
6937 case R_PPC64_REL24:
6938 if (h != NULL
8387904d
AM		 6939 && (h == &htab->tls_get_addr->elf
6940 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6941 {
6942 if (!expecting_tls_get_addr
6943 && rel != relstart
6944 && ((ELF64_R_TYPE (rel[-1].r_info)
6945 == R_PPC64_TOC16)
6946 || (ELF64_R_TYPE (rel[-1].r_info)
6947 == R_PPC64_TOC16_LO)))
6948 {
6949 /* Check for toc tls entries. */
6950 char *toc_tls;
951fd09b 6951 int retval;
411e1bfb 6952
0d4792f7 6953 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6954 rel - 1, ibfd);
6955 if (retval == 0)
411e1bfb 6956 goto err_free_rel;
30038c59
AM		 6957 if (retval > 1 && toc_tls != NULL)
6958 {
6959 expecting_tls_get_addr = 1;
6960 if (toc_ref != NULL)
6961 toc_ref[toc_ref_index] = 1;
6962 }
411e1bfb
AM		 6963 }
6964
6965 if (expecting_tls_get_addr)
6966 {
6967 struct plt_entry *ent;
6968 for (ent = h->plt.plist; ent; ent = ent->next)
6969 if (ent->addend == 0)
6970 {
6971 if (ent->plt.refcount > 0)
6972 ent->plt.refcount -= 1;
6973 break;
6974 }
6975 }
6976 }
6977 expecting_tls_get_addr = 0;
6978 continue;
6979
30038c59
AM		 6980 case R_PPC64_TOC16:
6981 case R_PPC64_TOC16_LO:
6982 case R_PPC64_TLS:
6983 expecting_tls_get_addr = 0;
6984 if (sym_sec == toc && toc != NULL)
6985 {
6986 /* Mark this toc entry as referenced by a TLS
6987 code sequence. We can do that now in the
6988 case of R_PPC64_TLS, and after checking for
6989 tls_get_addr for the TOC16 relocs. */
6990 if (toc_ref == NULL)
6991 {
6992 toc_ref = bfd_zmalloc (toc->size / 8);
6993 if (toc_ref == NULL)
6994 goto err_free_rel;
6995 }
6996 if (h != NULL)
6997 value = h->root.u.def.value;
6998 else
6999 value = sym->st_value;
7000 value += rel->r_addend;
7001 BFD_ASSERT (value < toc->size && value % 8 == 0);
7002 toc_ref_index = value / 8;
7003 if (r_type == R_PPC64_TLS)
7004 toc_ref[toc_ref_index] = 1;
7005 }
7006 continue;
7007
411e1bfb
AM		 7008 case R_PPC64_TPREL64:
7009 expecting_tls_get_addr = 0;
30038c59
AM		 7010 if (sec != toc
7011 || toc_ref == NULL
7012 || !toc_ref[rel->r_offset / 8])
7013 continue;
411e1bfb
AM		 7014 if (ok_tprel)
7015 {
7016 /* IE -> LE */
7017 tls_set = TLS_EXPLICIT;
7018 tls_clear = TLS_TPREL;
7019 break;
7020 }
7021 else
7022 continue;
7023
7024 case R_PPC64_DTPMOD64:
7025 expecting_tls_get_addr = 0;
30038c59
AM		 7026 if (sec != toc
7027 || toc_ref == NULL
7028 || !toc_ref[rel->r_offset / 8])
7029 continue;
951fd09b
AM		 7030 if (rel + 1 < relend
7031 && (rel[1].r_info
7032 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7033 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 7034 {
951fd09b 7035 if (ok_tprel)
411e1bfb 7036 /* GD -> LE */
951fd09b 7037 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 7038 else
7039 /* GD -> IE */
951fd09b
AM		 7040 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7041 tls_clear = TLS_GD;
411e1bfb
AM		 7042 }
7043 else
7044 {
951fd09b
AM		 7045 if (!is_local)
7046 continue;
7047
7048 /* LD -> LE */
7049 tls_set = TLS_EXPLICIT;
7050 tls_clear = TLS_LD;
411e1bfb
AM		 7051 }
7052 break;
7053
7054 default:
7055 expecting_tls_get_addr = 0;
7056 continue;
7057 }
7058
7059 if ((tls_set & TLS_EXPLICIT) == 0)
7060 {
7061 struct got_entry *ent;
7062
7063 /* Adjust got entry for this reloc. */
7064 if (h != NULL)
7065 ent = h->got.glist;
7066 else
7067 ent = elf_local_got_ents (ibfd)[r_symndx];
7068
7069 for (; ent != NULL; ent = ent->next)
7070 if (ent->addend == rel->r_addend
e717da7e 7071 && ent->owner == ibfd
e7b938ca 7072 && ent->tls_type == tls_type)
411e1bfb
AM		 7073 break;
7074 if (ent == NULL)
7075 abort ();
7076
7077 if (tls_set == 0)
7078 {
7079 /* We managed to get rid of a got entry. */
7080 if (ent->got.refcount > 0)
7081 ent->got.refcount -= 1;
7082 }
411e1bfb 7083 }
8c1d1bb8 7084 else
411e1bfb 7085 {
8c1d1bb8
AM		 7086 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7087 we'll lose one or two dyn relocs. */
7088 if (!dec_dynrel_count (rel->r_info, sec, info,
7089 NULL, h, sym_sec))
7090 return FALSE;
7091
7092 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7093 {
7094 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7095 NULL, h, sym_sec))
7096 return FALSE;
7097 }
411e1bfb
AM		 7098 }
7099
e7b938ca
AM		 7100 *tls_mask |= tls_set;
7101 *tls_mask &= ~tls_clear;
411e1bfb
AM		 7102 }
7103
7104 if (elf_section_data (sec)->relocs != relstart)
7105 free (relstart);
7106 }
7107
30038c59
AM		 7108 if (toc_ref != NULL)
7109 free (toc_ref);
7110
411e1bfb
AM		 7111 if (locsyms != NULL
7112 && (elf_tdata (ibfd)->symtab_hdr.contents
7113 != (unsigned char *) locsyms))
6cdc0ccc
AM		 7114 {
7115 if (!info->keep_memory)
411e1bfb 7116 free (locsyms);
6cdc0ccc 7117 else
411e1bfb 7118 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 7119 }
1e2f5b6e 7120 }
b34976b6 7121 return TRUE;
1e2f5b6e 7122}
b34976b6 7123
c5614fa4
AM		 7124/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7125 the values of any global symbols in a toc section that has been
7126 edited. Globals in toc sections should be a rarity, so this function
7127 sets a flag if any are found in toc sections other than the one just
7128 edited, so that futher hash table traversals can be avoided. */
7129
7130struct adjust_toc_info
7131{
7132 asection *toc;
7133 unsigned long *skip;
7134 bfd_boolean global_toc_syms;
7135};
7136
7137static bfd_boolean
7138adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7139{
7140 struct ppc_link_hash_entry *eh;
7141 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7142
7143 if (h->root.type == bfd_link_hash_indirect)
7144 return TRUE;
7145
7146 if (h->root.type == bfd_link_hash_warning)
7147 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7148
7149 if (h->root.type != bfd_link_hash_defined
7150 && h->root.type != bfd_link_hash_defweak)
7151 return TRUE;
7152
7153 eh = (struct ppc_link_hash_entry *) h;
7154 if (eh->adjust_done)
7155 return TRUE;
7156
7157 if (eh->elf.root.u.def.section == toc_inf->toc)
7158 {
7159 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7160 if (skip != (unsigned long) -1)
7161 eh->elf.root.u.def.value -= skip;
7162 else
7163 {
7164 (*_bfd_error_handler)
7165 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7166 eh->elf.root.u.def.section = &bfd_abs_section;
7167 eh->elf.root.u.def.value = 0;
7168 }
7169 eh->adjust_done = 1;
7170 }
7171 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7172 toc_inf->global_toc_syms = TRUE;
7173
7174 return TRUE;
7175}
7176
7177/* Examine all relocs referencing .toc sections in order to remove
7178 unused .toc entries. */
7179
7180bfd_boolean
7181ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7182{
7183 bfd *ibfd;
7184 struct adjust_toc_info toc_inf;
7185
7186 toc_inf.global_toc_syms = TRUE;
7187 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7188 {
7189 asection *toc, *sec;
7190 Elf_Internal_Shdr *symtab_hdr;
7191 Elf_Internal_Sym *local_syms;
7192 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7193 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 7194 unsigned long *skip, *drop;
7195 unsigned char *used;
7196 unsigned char *keep, last, some_unused;
7197
7198 toc = bfd_get_section_by_name (ibfd, ".toc");
7199 if (toc == NULL
92b7a70f 7200 || toc->size == 0
c5614fa4
AM		 7201 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7202 || elf_discarded_section (toc))
7203 continue;
7204
7205 local_syms = NULL;
7206 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7207 sym_hashes = elf_sym_hashes (ibfd);
7208
7209 /* Look at sections dropped from the final link. */
7210 skip = NULL;
7211 relstart = NULL;
7212 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7213 {
7214 if (sec->reloc_count == 0
7215 || !elf_discarded_section (sec)
7216 || get_opd_info (sec)
7217 || (sec->flags & SEC_ALLOC) == 0
7218 || (sec->flags & SEC_DEBUGGING) != 0)
7219 continue;
7220
7221 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7222 if (relstart == NULL)
7223 goto error_ret;
7224
7225 /* Run through the relocs to see which toc entries might be
7226 unused. */
7227 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7228 {
7229 enum elf_ppc64_reloc_type r_type;
7230 unsigned long r_symndx;
7231 asection *sym_sec;
7232 struct elf_link_hash_entry *h;
7233 Elf_Internal_Sym *sym;
7234 bfd_vma val;
7235
7236 r_type = ELF64_R_TYPE (rel->r_info);
7237 switch (r_type)
7238 {
7239 default:
7240 continue;
7241
7242 case R_PPC64_TOC16:
7243 case R_PPC64_TOC16_LO:
7244 case R_PPC64_TOC16_HI:
7245 case R_PPC64_TOC16_HA:
7246 case R_PPC64_TOC16_DS:
7247 case R_PPC64_TOC16_LO_DS:
7248 break;
7249 }
7250
7251 r_symndx = ELF64_R_SYM (rel->r_info);
7252 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7253 r_symndx, ibfd))
7254 goto error_ret;
7255
7256 if (sym_sec != toc)
7257 continue;
7258
7259 if (h != NULL)
7260 val = h->root.u.def.value;
7261 else
7262 val = sym->st_value;
7263 val += rel->r_addend;
7264
7265 if (val >= toc->size)
7266 continue;
7267
7268 /* Anything in the toc ought to be aligned to 8 bytes.
7269 If not, don't mark as unused. */
7270 if (val & 7)
7271 continue;
7272
7273 if (skip == NULL)
7274 {
7275 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7276 if (skip == NULL)
7277 goto error_ret;
7278 }
7279
7280 skip[val >> 3] = 1;
7281 }
7282
7283 if (elf_section_data (sec)->relocs != relstart)
7284 free (relstart);
7285 }
7286
7287 if (skip == NULL)
7288 continue;
7289
7290 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7291 if (used == NULL)
7292 {
7293 error_ret:
7294 if (local_syms != NULL
7295 && symtab_hdr->contents != (unsigned char *) local_syms)
7296 free (local_syms);
7297 if (sec != NULL
7298 && relstart != NULL
7299 && elf_section_data (sec)->relocs != relstart)
7300 free (relstart);
7301 if (skip != NULL)
7302 free (skip);
7303 return FALSE;
7304 }
7305
30038c59
AM		 7306 /* Now check all kept sections that might reference the toc.
7307 Check the toc itself last. */
7308 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7309 : ibfd->sections);
c5614fa4 7310 sec != NULL;
c5614fa4 7311 sec = (sec == toc ? NULL
c5614fa4 7312 : sec->next == NULL ? toc
30038c59 7313 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 7314 : sec->next))
7315 {
7316 int repeat;
7317
7318 if (sec->reloc_count == 0
7319 || elf_discarded_section (sec)
7320 || get_opd_info (sec)
7321 || (sec->flags & SEC_ALLOC) == 0
7322 || (sec->flags & SEC_DEBUGGING) != 0)
7323 continue;
7324
7325 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7326 if (relstart == NULL)
7327 goto error_ret;
7328
7329 /* Mark toc entries referenced as used. */
7330 repeat = 0;
7331 do
7332 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7333 {
7334 enum elf_ppc64_reloc_type r_type;
7335 unsigned long r_symndx;
7336 asection *sym_sec;
7337 struct elf_link_hash_entry *h;
7338 Elf_Internal_Sym *sym;
7339 bfd_vma val;
7340
7341 r_type = ELF64_R_TYPE (rel->r_info);
7342 switch (r_type)
7343 {
7344 case R_PPC64_TOC16:
7345 case R_PPC64_TOC16_LO:
7346 case R_PPC64_TOC16_HI:
7347 case R_PPC64_TOC16_HA:
7348 case R_PPC64_TOC16_DS:
7349 case R_PPC64_TOC16_LO_DS:
7350 /* In case we're taking addresses of toc entries. */
7351 case R_PPC64_ADDR64:
7352 break;
7353
7354 default:
7355 continue;
7356 }
7357
7358 r_symndx = ELF64_R_SYM (rel->r_info);
7359 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7360 r_symndx, ibfd))
7361 {
7362 free (used);
7363 goto error_ret;
7364 }
7365
7366 if (sym_sec != toc)
7367 continue;
7368
7369 if (h != NULL)
7370 val = h->root.u.def.value;
7371 else
7372 val = sym->st_value;
7373 val += rel->r_addend;
7374
7375 if (val >= toc->size)
7376 continue;
7377
7378 /* For the toc section, we only mark as used if
7379 this entry itself isn't unused. */
7380 if (sec == toc
7381 && !used[val >> 3]
7382 && (used[rel->r_offset >> 3]
7383 || !skip[rel->r_offset >> 3]))
7384 /* Do all the relocs again, to catch reference
7385 chains. */
7386 repeat = 1;
7387
7388 used[val >> 3] = 1;
7389 }
7390 while (repeat);
7391 }
7392
7393 /* Merge the used and skip arrays. Assume that TOC
7394 doublewords not appearing as either used or unused belong
7395 to to an entry more than one doubleword in size. */
7396 for (drop = skip, keep = used, last = 0, some_unused = 0;
7397 drop < skip + (toc->size + 7) / 8;
7398 ++drop, ++keep)
7399 {
7400 if (*keep)
7401 {
7402 *drop = 0;
7403 last = 0;
7404 }
7405 else if (*drop)
7406 {
7407 some_unused = 1;
7408 last = 1;
7409 }
7410 else
7411 *drop = last;
7412 }
7413
7414 free (used);
7415
7416 if (some_unused)
7417 {
7418 bfd_byte *contents, *src;
7419 unsigned long off;
7420
7421 /* Shuffle the toc contents, and at the same time convert the
7422 skip array from booleans into offsets. */
7423 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7424 goto error_ret;
7425
7426 elf_section_data (toc)->this_hdr.contents = contents;
7427
7428 for (src = contents, off = 0, drop = skip;
7429 src < contents + toc->size;
7430 src += 8, ++drop)
7431 {
7432 if (*drop)
7433 {
7434 *drop = (unsigned long) -1;
7435 off += 8;
7436 }
7437 else if (off != 0)
7438 {
7439 *drop = off;
7440 memcpy (src - off, src, 8);
7441 }
7442 }
7443 toc->rawsize = toc->size;
7444 toc->size = src - contents - off;
7445
92b7a70f
AM		 7446 if (toc->reloc_count != 0)
7447 {
7448 Elf_Internal_Rela *wrel;
7449 bfd_size_type sz;
c5614fa4 7450
92b7a70f
AM		 7451 /* Read toc relocs. */
7452 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7453 TRUE);
7454 if (relstart == NULL)
7455 goto error_ret;
7456
7457 /* Remove unused toc relocs, and adjust those we keep. */
7458 wrel = relstart;
7459 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7460 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7461 {
7462 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7463 wrel->r_info = rel->r_info;
7464 wrel->r_addend = rel->r_addend;
7465 ++wrel;
7466 }
8c1d1bb8
AM		 7467 else if (!dec_dynrel_count (rel->r_info, toc, info,
7468 &local_syms, NULL, NULL))
7469 goto error_ret;
35090471 7470
92b7a70f
AM		 7471 toc->reloc_count = wrel - relstart;
7472 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7473 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7474 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7475 }
c5614fa4
AM		 7476
7477 /* Adjust addends for relocs against the toc section sym. */
7478 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7479 {
7480 if (sec->reloc_count == 0
7481 || elf_discarded_section (sec))
7482 continue;
7483
7484 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7485 TRUE);
7486 if (relstart == NULL)
7487 goto error_ret;
7488
7489 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7490 {
7491 enum elf_ppc64_reloc_type r_type;
7492 unsigned long r_symndx;
7493 asection *sym_sec;
7494 struct elf_link_hash_entry *h;
7495 Elf_Internal_Sym *sym;
7496
7497 r_type = ELF64_R_TYPE (rel->r_info);
7498 switch (r_type)
7499 {
7500 default:
7501 continue;
7502
7503 case R_PPC64_TOC16:
7504 case R_PPC64_TOC16_LO:
7505 case R_PPC64_TOC16_HI:
7506 case R_PPC64_TOC16_HA:
7507 case R_PPC64_TOC16_DS:
7508 case R_PPC64_TOC16_LO_DS:
7509 case R_PPC64_ADDR64:
7510 break;
7511 }
7512
7513 r_symndx = ELF64_R_SYM (rel->r_info);
7514 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7515 r_symndx, ibfd))
7516 goto error_ret;
7517
7518 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7519 continue;
7520
7521 rel->r_addend -= skip[rel->r_addend >> 3];
7522 }
7523 }
7524
7525 /* We shouldn't have local or global symbols defined in the TOC,
7526 but handle them anyway. */
7527 if (local_syms != NULL)
7528 {
7529 Elf_Internal_Sym *sym;
7530
7531 for (sym = local_syms;
7532 sym < local_syms + symtab_hdr->sh_info;
7533 ++sym)
7534 if (sym->st_shndx != SHN_UNDEF
7535 && (sym->st_shndx < SHN_LORESERVE
7536 || sym->st_shndx > SHN_HIRESERVE)
7537 && sym->st_value != 0
7538 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7539 {
7540 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7541 sym->st_value -= skip[sym->st_value >> 3];
7542 else
7543 {
7544 (*_bfd_error_handler)
7545 (_("%s defined in removed toc entry"),
26c61ae5
L		 7546 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7547 NULL));
c5614fa4
AM		 7548 sym->st_value = 0;
7549 sym->st_shndx = SHN_ABS;
7550 }
7551 symtab_hdr->contents = (unsigned char *) local_syms;
7552 }
7553 }
7554
7555 /* Finally, adjust any global syms defined in the toc. */
7556 if (toc_inf.global_toc_syms)
7557 {
7558 toc_inf.toc = toc;
7559 toc_inf.skip = skip;
7560 toc_inf.global_toc_syms = FALSE;
7561 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7562 &toc_inf);
7563 }
7564 }
7565
7566 if (local_syms != NULL
7567 && symtab_hdr->contents != (unsigned char *) local_syms)
7568 {
7569 if (!info->keep_memory)
7570 free (local_syms);
7571 else
7572 symtab_hdr->contents = (unsigned char *) local_syms;
7573 }
7574 free (skip);
7575 }
7576
7577 return TRUE;
7578}
7579
65f38f15
AM		 7580/* Allocate space in .plt, .got and associated reloc sections for
7581 dynamic relocs. */
5bd4f169 7582
b34976b6 7583static bfd_boolean
4ce794b7 7584allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7585{
65f38f15
AM		 7586 struct bfd_link_info *info;
7587 struct ppc_link_hash_table *htab;
5bd4f169 7588 asection *s;
65f38f15
AM		 7589 struct ppc_link_hash_entry *eh;
7590 struct ppc_dyn_relocs *p;
411e1bfb 7591 struct got_entry *gent;
5bd4f169 7592
e92d460e 7593 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7594 return TRUE;
5bd4f169 7595
e92d460e
AM		 7596 if (h->root.type == bfd_link_hash_warning)
7597 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7598
65f38f15
AM		 7599 info = (struct bfd_link_info *) inf;
7600 htab = ppc_hash_table (info);
5bd4f169 7601
65f38f15 7602 if (htab->elf.dynamic_sections_created
411e1bfb 7603 && h->dynindx != -1
9c7a29a3 7604 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7605 {
411e1bfb
AM		 7606 struct plt_entry *pent;
7607 bfd_boolean doneone = FALSE;
7608 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7609 if (pent->plt.refcount > 0)
7610 {
411e1bfb
AM		 7611 /* If this is the first .plt entry, make room for the special
7612 first entry. */
4ce794b7 7613 s = htab->plt;
eea6121a
AM		 7614 if (s->size == 0)
7615 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7616
eea6121a 7617 pent->plt.offset = s->size;
411e1bfb
AM		 7618
7619 /* Make room for this entry. */
eea6121a 7620 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7621
7622 /* Make room for the .glink code. */
4ce794b7 7623 s = htab->glink;
eea6121a
AM		 7624 if (s->size == 0)
7625 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7626 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7627 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7628 s->size += 4;
7629 s->size += 2*4;
411e1bfb
AM		 7630
7631 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7632 s = htab->relplt;
eea6121a 7633 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7634 doneone = TRUE;
7635 }
7636 else
7637 pent->plt.offset = (bfd_vma) -1;
7638 if (!doneone)
65f38f15 7639 {
411e1bfb 7640 h->plt.plist = NULL;
f5385ebf 7641 h->needs_plt = 0;
65f38f15
AM		 7642 }
7643 }
7644 else
7645 {
411e1bfb 7646 h->plt.plist = NULL;
f5385ebf 7647 h->needs_plt = 0;
65f38f15
AM		 7648 }
7649
951fd09b
AM		 7650 eh = (struct ppc_link_hash_entry *) h;
7651 /* Run through the TLS GD got entries first if we're changing them
7652 to TPREL. */
e7b938ca 7653 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7654 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7655 if (gent->got.refcount > 0
7656 && (gent->tls_type & TLS_GD) != 0)
7657 {
7658 /* This was a GD entry that has been converted to TPREL. If
7659 there happens to be a TPREL entry we can use that one. */
7660 struct got_entry *ent;
7661 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7662 if (ent->got.refcount > 0
7663 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7664 && ent->addend == gent->addend
7665 && ent->owner == gent->owner)
951fd09b
AM		 7666 {
7667 gent->got.refcount = 0;
7668 break;
7669 }
7670
7671 /* If not, then we'll be using our own TPREL entry. */
7672 if (gent->got.refcount != 0)
7673 gent->tls_type = TLS_TLS | TLS_TPREL;
7674 }
7675
411e1bfb
AM		 7676 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7677 if (gent->got.refcount > 0)
7678 {
951fd09b
AM		 7679 bfd_boolean dyn;
7680
411e1bfb 7681 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7682 Undefined weak syms won't yet be marked as dynamic,
7683 nor will all TLS symbols. */
411e1bfb 7684 if (h->dynindx == -1
f5385ebf 7685 && !h->forced_local)
411e1bfb 7686 {
c152c796 7687 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7688 return FALSE;
7689 }
65f38f15 7690
d881513a 7691 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7692 && !h->def_dynamic)
411e1bfb 7693 {
e717da7e 7694 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7695 continue;
411e1bfb 7696 }
951fd09b 7697
e717da7e 7698 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7699 gent->got.offset = s->size;
7700 s->size
d881513a 7701 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7702 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7703 if ((info->shared
7704 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7705 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7706 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7707 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7708 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7709 ? 2 * sizeof (Elf64_External_Rela)
7710 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7711 }
7712 else
7713 gent->got.offset = (bfd_vma) -1;
65f38f15 7714
65f38f15 7715 if (eh->dyn_relocs == NULL)
b34976b6 7716 return TRUE;
65f38f15
AM		 7717
7718 /* In the shared -Bsymbolic case, discard space allocated for
7719 dynamic pc-relative relocs against symbols which turn out to be
7720 defined in regular objects. For the normal shared case, discard
7721 space for relocs that have become local due to symbol visibility
7722 changes. */
7723
7724 if (info->shared)
7725 {
9c7a29a3
AM		 7726 /* Relocs that use pc_count are those that appear on a call insn,
7727 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7728 generated via assembly. We want calls to protected symbols to
7729 resolve directly to the function rather than going via the plt.
7730 If people want function pointer comparisons to work as expected
7731 then they should avoid writing weird assembly. */
09695f56 7732 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7733 {
7734 struct ppc_dyn_relocs **pp;
7735
7736 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7737 {
65f38f15
AM		 7738 p->count -= p->pc_count;
7739 p->pc_count = 0;
7740 if (p->count == 0)
7741 *pp = p->next;
7742 else
7743 pp = &p->next;
5bd4f169 7744 }
65f38f15 7745 }
4e795f50
AM		 7746
7747 /* Also discard relocs on undefined weak syms with non-default
7748 visibility. */
cab87ef9
AM		 7749 if (eh->dyn_relocs != NULL
7750 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 7751 {
7752 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7753 eh->dyn_relocs = NULL;
7754
7755 /* Make sure this symbol is output as a dynamic symbol.
7756 Undefined weak syms won't yet be marked as dynamic. */
7757 else if (h->dynindx == -1
7758 && !h->forced_local)
7759 {
7760 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7761 return FALSE;
7762 }
7763 }
65f38f15 7764 }
f4656909 7765 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7766 {
7767 /* For the non-shared case, discard space for relocs against
7768 symbols which turn out to need copy relocs or are not
7769 dynamic. */
7770
f5385ebf
AM		 7771 if (!h->non_got_ref
7772 && h->def_dynamic
7773 && !h->def_regular)
65f38f15
AM		 7774 {
7775 /* Make sure this symbol is output as a dynamic symbol.
7776 Undefined weak syms won't yet be marked as dynamic. */
7777 if (h->dynindx == -1
f5385ebf 7778 && !h->forced_local)
65f38f15 7779 {
c152c796 7780 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7781 return FALSE;
65f38f15
AM		 7782 }
7783
7784 /* If that succeeded, we know we'll be keeping all the
7785 relocs. */
7786 if (h->dynindx != -1)
7787 goto keep;
7788 }
7789
7790 eh->dyn_relocs = NULL;
7791
ec338859 7792 keep: ;
65f38f15
AM		 7793 }
7794
7795 /* Finally, allocate space. */
7796 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7797 {
7798 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7799 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7800 }
7801
b34976b6 7802 return TRUE;
65f38f15
AM		 7803}
7804
7805/* Find any dynamic relocs that apply to read-only sections. */
7806
b34976b6 7807static bfd_boolean
4ce794b7 7808readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7809{
7810 struct ppc_link_hash_entry *eh;
7811 struct ppc_dyn_relocs *p;
7812
e92d460e
AM		 7813 if (h->root.type == bfd_link_hash_warning)
7814 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7815
65f38f15
AM		 7816 eh = (struct ppc_link_hash_entry *) h;
7817 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7818 {
7819 asection *s = p->sec->output_section;
7820
7821 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7822 {
4ce794b7 7823 struct bfd_link_info *info = inf;
65f38f15
AM		 7824
7825 info->flags |= DF_TEXTREL;
7826
7827 /* Not an error, just cut short the traversal. */
b34976b6 7828 return FALSE;
65f38f15
AM		 7829 }
7830 }
b34976b6 7831 return TRUE;
65f38f15
AM		 7832}
7833
7834/* Set the sizes of the dynamic sections. */
7835
b34976b6 7836static bfd_boolean
4ce794b7
AM		 7837ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7838 struct bfd_link_info *info)
65f38f15
AM		 7839{
7840 struct ppc_link_hash_table *htab;
7841 bfd *dynobj;
7842 asection *s;
b34976b6 7843 bfd_boolean relocs;
65f38f15
AM		 7844 bfd *ibfd;
7845
7846 htab = ppc_hash_table (info);
7847 dynobj = htab->elf.dynobj;
7848 if (dynobj == NULL)
7849 abort ();
7850
7851 if (htab->elf.dynamic_sections_created)
7852 {
7853 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7854 if (info->executable)
65f38f15
AM		 7855 {
7856 s = bfd_get_section_by_name (dynobj, ".interp");
7857 if (s == NULL)
7858 abort ();
eea6121a 7859 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7860 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7861 }
7862 }
7863
7864 /* Set up .got offsets for local syms, and space for local dynamic
7865 relocs. */
7866 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7867 {
411e1bfb
AM		 7868 struct got_entry **lgot_ents;
7869 struct got_entry **end_lgot_ents;
e7b938ca 7870 char *lgot_masks;
65f38f15
AM		 7871 bfd_size_type locsymcount;
7872 Elf_Internal_Shdr *symtab_hdr;
7873 asection *srel;
7874
ee75fd95 7875 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7876 continue;
7877
e717da7e
AM		 7878 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7879 {
7880 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7881 ppc64_tlsld_got (ibfd)->offset = s->size;
7882 s->size += 16;
e717da7e
AM		 7883 if (info->shared)
7884 {
7885 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7886 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7887 }
7888 }
7889 else
7890 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7891
65f38f15
AM		 7892 for (s = ibfd->sections; s != NULL; s = s->next)
7893 {
ec338859 7894 struct ppc_dyn_relocs *p;
65f38f15 7895
6edfbbad 7896 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 7897 {
ec338859
AM		 7898 if (!bfd_is_abs_section (p->sec)
7899 && bfd_is_abs_section (p->sec->output_section))
7900 {
7901 /* Input section has been discarded, either because
7902 it is a copy of a linkonce section or due to
7903 linker script /DISCARD/, so we'll be discarding
7904 the relocs too. */
7905 }
248866a8 7906 else if (p->count != 0)
ec338859
AM		 7907 {
7908 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7909 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7910 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7911 info->flags |= DF_TEXTREL;
ec338859 7912 }
65f38f15
AM		 7913 }
7914 }
7915
411e1bfb
AM		 7916 lgot_ents = elf_local_got_ents (ibfd);
7917 if (!lgot_ents)
65f38f15
AM		 7918 continue;
7919
7920 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7921 locsymcount = symtab_hdr->sh_info;
411e1bfb 7922 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7923 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7924 s = ppc64_elf_tdata (ibfd)->got;
7925 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7926 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7927 {
411e1bfb
AM		 7928 struct got_entry *ent;
7929
7930 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7931 if (ent->got.refcount > 0)
7932 {
e7b938ca 7933 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7934 {
e717da7e 7935 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7936 {
eea6121a
AM		 7937 ppc64_tlsld_got (ibfd)->offset = s->size;
7938 s->size += 16;
411e1bfb 7939 if (info->shared)
eea6121a 7940 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7941 }
e717da7e 7942 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7943 }
7944 else
7945 {
eea6121a 7946 ent->got.offset = s->size;
e7b938ca 7947 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7948 {
eea6121a 7949 s->size += 16;
411e1bfb 7950 if (info->shared)
eea6121a 7951 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7952 }
7953 else
7954 {
eea6121a 7955 s->size += 8;
411e1bfb 7956 if (info->shared)
eea6121a 7957 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7958 }
7959 }
7960 }
7961 else
7962 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7963 }
7964 }
7965
7966 /* Allocate global sym .plt and .got entries, and space for global
7967 sym dynamic relocs. */
4ce794b7 7968 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7969
7970 /* We now have determined the sizes of the various dynamic sections.
7971 Allocate memory for them. */
b34976b6 7972 relocs = FALSE;
65f38f15
AM		 7973 for (s = dynobj->sections; s != NULL; s = s->next)
7974 {
7975 if ((s->flags & SEC_LINKER_CREATED) == 0)
7976 continue;
7977
4ce794b7 7978 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7979 /* These haven't been allocated yet; don't strip. */
7980 continue;
e717da7e
AM		 7981 else if (s == htab->got
7982 || s == htab->plt
c456f082
AM		 7983 || s == htab->glink
7984 || s == htab->dynbss)
65f38f15
AM		 7985 {
7986 /* Strip this section if we don't need it; see the
7987 comment below. */
5bd4f169 7988 }
0112cd26 7989 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 7990 {
c456f082 7991 if (s->size != 0)
5bd4f169 7992 {
4ce794b7 7993 if (s != htab->relplt)
b34976b6 7994 relocs = TRUE;
5bd4f169
AM		 7995
7996 /* We use the reloc_count field as a counter if we need
7997 to copy relocs into the output file. */
7998 s->reloc_count = 0;
7999 }
8000 }
65f38f15 8001 else
5bd4f169
AM		 8002 {
8003 /* It's not one of our sections, so don't allocate space. */
8004 continue;
8005 }
8006
eea6121a 8007 if (s->size == 0)
5bd4f169 8008 {
c456f082
AM		 8009 /* If we don't need this section, strip it from the
8010 output file. This is mostly to handle .rela.bss and
8011 .rela.plt. We must create both sections in
8012 create_dynamic_sections, because they must be created
8013 before the linker maps input sections to output
8014 sections. The linker does that before
8015 adjust_dynamic_symbol is called, and it is that
8016 function which decides whether anything needs to go
8017 into these sections. */
8423293d 8018 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 8019 continue;
8020 }
8021
c456f082 8022 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 8023 continue;
8024
65f38f15
AM		 8025 /* Allocate memory for the section contents. We use bfd_zalloc
8026 here in case unused entries are not reclaimed before the
8027 section's contents are written out. This should not happen,
411e1bfb
AM		 8028 but this way if it does we get a R_PPC64_NONE reloc in .rela
8029 sections instead of garbage.
8030 We also rely on the section contents being zero when writing
8031 the GOT. */
eea6121a 8032 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8033 if (s->contents == NULL)
b34976b6 8034 return FALSE;
5bd4f169
AM		 8035 }
8036
e717da7e
AM		 8037 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8038 {
ee75fd95 8039 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 8040 continue;
8041
e717da7e
AM		 8042 s = ppc64_elf_tdata (ibfd)->got;
8043 if (s != NULL && s != htab->got)
8044 {
eea6121a 8045 if (s->size == 0)
8423293d 8046 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8047 else
8048 {
eea6121a 8049 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8050 if (s->contents == NULL)
8051 return FALSE;
8052 }
8053 }
8054 s = ppc64_elf_tdata (ibfd)->relgot;
8055 if (s != NULL)
8056 {
eea6121a 8057 if (s->size == 0)
8423293d 8058 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8059 else
8060 {
eea6121a 8061 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8062 if (s->contents == NULL)
8063 return FALSE;
8064 relocs = TRUE;
8065 s->reloc_count = 0;
8066 }
8067 }
8068 }
8069
e86ce104 8070 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 8071 {
8072 /* Add some entries to the .dynamic section. We fill in the
8073 values later, in ppc64_elf_finish_dynamic_sections, but we
8074 must add the entries now so that we get the correct size for
8075 the .dynamic section. The DT_DEBUG entry is filled in by the
8076 dynamic linker and used by the debugger. */
dc810e39 8077#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8078 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8079
36af4a4e 8080 if (info->executable)
5bd4f169 8081 {
dc810e39 8082 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8083 return FALSE;
5bd4f169
AM		 8084 }
8085
eea6121a 8086 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8087 {
dc810e39
AM		 8088 if (!add_dynamic_entry (DT_PLTGOT, 0)
8089 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8090 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 8091 || !add_dynamic_entry (DT_JMPREL, 0)
8092 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8093 return FALSE;
5bd4f169
AM		 8094 }
8095
19397422
AM		 8096 if (NO_OPD_RELOCS)
8097 {
8098 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8099 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8100 return FALSE;
19397422
AM		 8101 }
8102
5bd4f169
AM		 8103 if (relocs)
8104 {
dc810e39
AM		 8105 if (!add_dynamic_entry (DT_RELA, 0)
8106 || !add_dynamic_entry (DT_RELASZ, 0)
8107 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8108 return FALSE;
5bd4f169 8109
65f38f15
AM		 8110 /* If any dynamic relocs apply to a read-only section,
8111 then we need a DT_TEXTREL entry. */
248866a8 8112 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8113 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8114
65f38f15 8115 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8116 {
65f38f15 8117 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8118 return FALSE;
5bd4f169 8119 }
5bd4f169 8120 }
5bd4f169 8121 }
65f38f15 8122#undef add_dynamic_entry
5bd4f169 8123
b34976b6 8124 return TRUE;
5bd4f169
AM		 8125}
8126
721956f4 8127/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8128
4ce794b7
AM		 8129static inline enum ppc_stub_type
8130ppc_type_of_stub (asection *input_sec,
8131 const Elf_Internal_Rela *rel,
8132 struct ppc_link_hash_entry **hash,
8133 bfd_vma destination)
5bd4f169 8134{
721956f4
AM		 8135 struct ppc_link_hash_entry *h = *hash;
8136 bfd_vma location;
8137 bfd_vma branch_offset;
8138 bfd_vma max_branch_offset;
4ce794b7 8139 enum elf_ppc64_reloc_type r_type;
5bd4f169 8140
721956f4
AM		 8141 if (h != NULL)
8142 {
7fe2b9a6
AM		 8143 struct ppc_link_hash_entry *fdh = h;
8144 if (fdh->oh != NULL
8145 && fdh->oh->is_func_descriptor)
8146 fdh = fdh->oh;
8387904d 8147
7fe2b9a6 8148 if (fdh->elf.dynindx != -1)
5bd4f169 8149 {
411e1bfb 8150 struct plt_entry *ent;
8387904d 8151
7fe2b9a6 8152 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 8153 if (ent->addend == rel->r_addend
8154 && ent->plt.offset != (bfd_vma) -1)
8155 {
7fe2b9a6 8156 *hash = fdh;
411e1bfb
AM		 8157 return ppc_stub_plt_call;
8158 }
5bd4f169
AM		 8159 }
8160
7fe2b9a6
AM		 8161 /* Here, we know we don't have a plt entry. If we don't have a
8162 either a defined function descriptor or a defined entry symbol
8163 in a regular object file, then it is pointless trying to make
8164 any other type of stub. */
8165 if (!((fdh->elf.root.type == bfd_link_hash_defined
8166 || fdh->elf.root.type == bfd_link_hash_defweak)
8167 && fdh->elf.root.u.def.section->output_section != NULL)
8168 && !((h->elf.root.type == bfd_link_hash_defined
8169 || h->elf.root.type == bfd_link_hash_defweak)
8170 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8171 return ppc_stub_none;
5d1634d7 8172 }
5d1634d7 8173
721956f4
AM		 8174 /* Determine where the call point is. */
8175 location = (input_sec->output_offset
8176 + input_sec->output_section->vma
8177 + rel->r_offset);
5d1634d7 8178
721956f4
AM		 8179 branch_offset = destination - location;
8180 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8181
721956f4
AM		 8182 /* Determine if a long branch stub is needed. */
8183 max_branch_offset = 1 << 25;
4ce794b7 8184 if (r_type != R_PPC64_REL24)
721956f4 8185 max_branch_offset = 1 << 15;
5d1634d7 8186
721956f4
AM		 8187 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8188 /* We need a stub. Figure out whether a long_branch or plt_branch
8189 is needed later. */
8190 return ppc_stub_long_branch;
5d1634d7 8191
721956f4 8192 return ppc_stub_none;
5d1634d7
AM		 8193}
8194
8195/* Build a .plt call stub. */
8196
4ce794b7
AM		 8197static inline bfd_byte *
8198build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 8199{
8200#define PPC_LO(v) ((v) & 0xffff)
8201#define PPC_HI(v) (((v) >> 16) & 0xffff)
8202#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8203
ac2df442
AM		 8204 if (PPC_HA (offset) != 0)
8205 {
8206 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8207 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8208 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8209 if (PPC_HA (offset + 16) != PPC_HA (offset))
8210 {
8211 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8212 offset = 0;
8213 }
8214 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8215 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8216 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8217 bfd_put_32 (obfd, BCTR, p), p += 4;
8218 }
8219 else
8220 {
8221 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8222 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8223 if (PPC_HA (offset + 16) != PPC_HA (offset))
8224 {
8225 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8226 offset = 0;
8227 }
8228 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8229 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8230 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8231 bfd_put_32 (obfd, BCTR, p), p += 4;
8232 }
5d1634d7
AM		 8233 return p;
8234}
8235
b34976b6 8236static bfd_boolean
4ce794b7 8237ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8238{
721956f4
AM		 8239 struct ppc_stub_hash_entry *stub_entry;
8240 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 8241 struct bfd_link_info *info;
8242 struct ppc_link_hash_table *htab;
721956f4
AM		 8243 bfd_byte *loc;
8244 bfd_byte *p;
8245 unsigned int indx;
411e1bfb 8246 struct plt_entry *ent;
ee75fd95 8247 bfd_vma dest, off;
721956f4 8248 int size;
5d1634d7 8249
721956f4
AM		 8250 /* Massage our args to the form they really have. */
8251 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8252 info = in_arg;
5d1634d7 8253
5d1634d7
AM		 8254 htab = ppc_hash_table (info);
8255
721956f4 8256 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8257 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8258 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8259
4ce794b7 8260 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8261 switch (stub_entry->stub_type)
5d1634d7 8262 {
721956f4 8263 case ppc_stub_long_branch:
ad8e1ba5 8264 case ppc_stub_long_branch_r2off:
721956f4 8265 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 8266 off = dest = (stub_entry->target_value
8267 + stub_entry->target_section->output_offset
8268 + stub_entry->target_section->output_section->vma);
5d1634d7 8269
721956f4
AM		 8270 /* And this is where we are coming from. */
8271 off -= (stub_entry->stub_offset
97b639ba
AM		 8272 + stub_entry->stub_sec->output_offset
8273 + stub_entry->stub_sec->output_section->vma);
e86ce104 8274
ac2df442
AM		 8275 size = 4;
8276 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM		 8277 {
8278 bfd_vma r2off;
8279
8280 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8281 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8282 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8283 loc += 4;
ac2df442
AM		 8284 size = 12;
8285 if (PPC_HA (r2off) != 0)
8286 {
8287 size = 16;
8288 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8289 loc += 4;
8290 }
97b639ba 8291 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 8292 loc += 4;
ac2df442 8293 off -= size - 4;
ad8e1ba5 8294 }
97b639ba 8295 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8296
5c3dead3
AM		 8297 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8298 {
8299 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8300 stub_entry->root.string);
8301 htab->stub_error = TRUE;
8302 return FALSE;
8303 }
ee75fd95
AM		 8304
8305 if (info->emitrelocations)
8306 {
8307 Elf_Internal_Rela *relocs, *r;
8308 struct bfd_elf_section_data *elfsec_data;
8309
8310 elfsec_data = elf_section_data (stub_entry->stub_sec);
8311 relocs = elfsec_data->relocs;
8312 if (relocs == NULL)
8313 {
8314 bfd_size_type relsize;
8315 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8316 relocs = bfd_alloc (htab->stub_bfd, relsize);
8317 if (relocs == NULL)
8318 return FALSE;
8319 elfsec_data->relocs = relocs;
2e5b2d74
AM		 8320 elfsec_data->rel_hdr.sh_size = (stub_entry->stub_sec->reloc_count
8321 * sizeof (Elf64_External_Rela));
8322 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
ee75fd95
AM		 8323 stub_entry->stub_sec->reloc_count = 0;
8324 }
8325 r = relocs + stub_entry->stub_sec->reloc_count;
8326 stub_entry->stub_sec->reloc_count += 1;
8327 r->r_offset = loc - stub_entry->stub_sec->contents;
8328 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8329 r->r_addend = dest;
8330 if (stub_entry->h != NULL)
8331 {
8332 struct elf_link_hash_entry **hashes;
8333 unsigned long symndx;
8334 struct ppc_link_hash_entry *h;
8335
8336 hashes = elf_sym_hashes (htab->stub_bfd);
8337 if (hashes == NULL)
8338 {
8339 bfd_size_type hsize;
8340
8341 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8342 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8343 if (hashes == NULL)
8344 return FALSE;
8345 elf_sym_hashes (htab->stub_bfd) = hashes;
8346 htab->stub_globals = 1;
8347 }
8348 symndx = htab->stub_globals++;
8349 h = stub_entry->h;
8350 hashes[symndx] = &h->elf;
8351 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8352 if (h->oh != NULL && h->oh->is_func)
8353 h = h->oh;
8354 if (h->elf.root.u.def.section != stub_entry->target_section)
8355 /* H is an opd symbol. The addend must be zero. */
8356 r->r_addend = 0;
8357 else
8358 {
8359 off = (h->elf.root.u.def.value
8360 + h->elf.root.u.def.section->output_offset
8361 + h->elf.root.u.def.section->output_section->vma);
8362 r->r_addend -= off;
8363 }
8364 }
8365 }
721956f4 8366 break;
e86ce104 8367
721956f4 8368 case ppc_stub_plt_branch:
ad8e1ba5 8369 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8370 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8371 stub_entry->root.string + 9,
b34976b6 8372 FALSE, FALSE);
721956f4
AM		 8373 if (br_entry == NULL)
8374 {
8375 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8376 stub_entry->root.string);
b34976b6
AM		 8377 htab->stub_error = TRUE;
8378 return FALSE;
721956f4
AM		 8379 }
8380
8381 off = (stub_entry->target_value
8382 + stub_entry->target_section->output_offset
8383 + stub_entry->target_section->output_section->vma);
8384
4ce794b7
AM		 8385 bfd_put_64 (htab->brlt->owner, off,
8386 htab->brlt->contents + br_entry->offset);
721956f4 8387
ee75fd95 8388 if (htab->relbrlt != NULL)
721956f4
AM		 8389 {
8390 /* Create a reloc for the branch lookup table entry. */
8391 Elf_Internal_Rela rela;
ad8e1ba5 8392 bfd_byte *rl;
5d1634d7 8393
721956f4 8394 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8395 + htab->brlt->output_offset
8396 + htab->brlt->output_section->vma);
721956f4
AM		 8397 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8398 rela.r_addend = off;
8399
4ce794b7
AM		 8400 rl = htab->relbrlt->contents;
8401 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8402 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4 8403 }
84f5d08e
AM		 8404 else if (info->emitrelocations)
8405 {
8406 Elf_Internal_Rela *relocs, *r;
8407 struct bfd_elf_section_data *elfsec_data;
8408
8409 elfsec_data = elf_section_data (htab->brlt);
8410 relocs = elfsec_data->relocs;
8411 if (relocs == NULL)
8412 {
8413 bfd_size_type relsize;
8414 relsize = htab->brlt->reloc_count * sizeof (*relocs);
8415 relocs = bfd_alloc (htab->brlt->owner, relsize);
8416 if (relocs == NULL)
8417 return FALSE;
8418 elfsec_data->relocs = relocs;
2e5b2d74
AM		 8419 elfsec_data->rel_hdr.sh_size = (stub_entry->stub_sec->reloc_count
8420 * sizeof (Elf64_External_Rela));
8421 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
84f5d08e
AM		 8422 htab->brlt->reloc_count = 0;
8423 }
8424 r = relocs + htab->brlt->reloc_count;
8425 htab->brlt->reloc_count += 1;
8426 r->r_offset = (br_entry->offset
8427 + htab->brlt->output_offset
8428 + htab->brlt->output_section->vma);
8429 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8430 r->r_addend = off;
8431 }
721956f4
AM		 8432
8433 off = (br_entry->offset
4ce794b7
AM		 8434 + htab->brlt->output_offset
8435 + htab->brlt->output_section->vma
8436 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8437 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8438
ad8e1ba5 8439 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8440 {
8441 (*_bfd_error_handler)
e86ce104 8442 (_("linkage table error against `%s'"),
721956f4 8443 stub_entry->root.string);
5d1634d7 8444 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8445 htab->stub_error = TRUE;
8446 return FALSE;
5d1634d7 8447 }
41bd81ab 8448
721956f4 8449 indx = off;
ad8e1ba5
AM		 8450 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8451 {
ac2df442
AM		 8452 if (PPC_HA (indx) != 0)
8453 {
8454 size = 16;
8455 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8456 loc += 4;
8457 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8458 }
8459 else
8460 {
8461 size = 12;
8462 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
8463 }
ad8e1ba5
AM		 8464 }
8465 else
8466 {
8467 bfd_vma r2off;
8468
8469 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8470 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8471 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8472 loc += 4;
ac2df442
AM		 8473 size = 20;
8474 if (PPC_HA (indx) != 0)
8475 {
8476 size += 4;
8477 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8478 loc += 4;
8479 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8480 loc += 4;
8481 }
8482 else
8483 {
8484 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
8485 loc += 4;
8486 }
8487
8488 if (PPC_HA (r2off) != 0)
8489 {
8490 size += 4;
8491 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8492 loc += 4;
8493 }
97b639ba 8494 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8495 }
8496 loc += 4;
97b639ba 8497 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8498 loc += 4;
97b639ba 8499 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8500 break;
5d1634d7 8501
721956f4 8502 case ppc_stub_plt_call:
c862ae31
AM		 8503 /* Do the best we can for shared libraries built without
8504 exporting ".foo" for each "foo". This can happen when symbol
8505 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8506 if (stub_entry->h->oh != NULL
8507 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8508 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8509 {
8510 /* Point the symbol at the stub. There may be multiple stubs,
8511 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8512 defined somewhere. Maybe defining the symbol in the stub
8513 section is a silly idea. If we didn't do this, htab->top_id
8514 could disappear. */
34814b9f
AM		 8515 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8516 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8517 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8518 }
8519
721956f4 8520 /* Now build the stub. */
411e1bfb
AM		 8521 off = (bfd_vma) -1;
8522 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8523 if (ent->addend == stub_entry->addend)
8524 {
8525 off = ent->plt.offset;
8526 break;
8527 }
721956f4
AM		 8528 if (off >= (bfd_vma) -2)
8529 abort ();
8530
8531 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8532 off += (htab->plt->output_offset
8533 + htab->plt->output_section->vma
8534 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8535 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8536
ad8e1ba5 8537 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8538 {
8539 (*_bfd_error_handler)
8540 (_("linkage table error against `%s'"),
8541 stub_entry->h->elf.root.root.string);
8542 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8543 htab->stub_error = TRUE;
8544 return FALSE;
721956f4
AM		 8545 }
8546
97b639ba 8547 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8548 size = p - loc;
8549 break;
8550
8551 default:
8552 BFD_FAIL ();
b34976b6 8553 return FALSE;
721956f4
AM		 8554 }
8555
eea6121a 8556 stub_entry->stub_sec->size += size;
97b639ba 8557
ee75fd95 8558 if (htab->emit_stub_syms)
97b639ba
AM		 8559 {
8560 struct elf_link_hash_entry *h;
ee75fd95
AM		 8561 size_t len1, len2;
8562 char *name;
8563 const char *const stub_str[] = { "long_branch",
8564 "long_branch_r2off",
8565 "plt_branch",
8566 "plt_branch_r2off",
8567 "plt_call" };
8568
8569 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8570 len2 = strlen (stub_entry->root.string);
8571 name = bfd_malloc (len1 + len2 + 2);
8572 if (name == NULL)
8573 return FALSE;
8574 memcpy (name, stub_entry->root.string, 9);
8575 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8576 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8577 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8578 if (h == NULL)
8579 return FALSE;
8580 if (h->root.type == bfd_link_hash_new)
8581 {
8582 h->root.type = bfd_link_hash_defined;
8583 h->root.u.def.section = stub_entry->stub_sec;
8584 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8585 h->ref_regular = 1;
8586 h->def_regular = 1;
8587 h->ref_regular_nonweak = 1;
8588 h->forced_local = 1;
8589 h->non_elf = 0;
97b639ba
AM		 8590 }
8591 }
8592
b34976b6 8593 return TRUE;
721956f4
AM		 8594}
8595
8596/* As above, but don't actually build the stub. Just bump offset so
8597 we know stub section sizes, and select plt_branch stubs where
8598 long_branch stubs won't do. */
8599
b34976b6 8600static bfd_boolean
4ce794b7 8601ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8602{
8603 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8604 struct bfd_link_info *info;
721956f4
AM		 8605 struct ppc_link_hash_table *htab;
8606 bfd_vma off;
8607 int size;
8608
8609 /* Massage our args to the form they really have. */
8610 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8611 info = in_arg;
8612
8613 htab = ppc_hash_table (info);
721956f4
AM		 8614
8615 if (stub_entry->stub_type == ppc_stub_plt_call)
8616 {
411e1bfb 8617 struct plt_entry *ent;
58ac9f71 8618 off = (bfd_vma) -1;
411e1bfb
AM		 8619 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8620 if (ent->addend == stub_entry->addend)
8621 {
8622 off = ent->plt.offset & ~(bfd_vma) 1;
8623 break;
8624 }
58ac9f71 8625 if (off >= (bfd_vma) -2)
411e1bfb 8626 abort ();
4ce794b7
AM		 8627 off += (htab->plt->output_offset
8628 + htab->plt->output_section->vma
8629 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8630 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8631
ad8e1ba5 8632 size = PLT_CALL_STUB_SIZE;
ac2df442
AM		 8633 if (PPC_HA (off) == 0)
8634 size -= 4;
4ce794b7 8635 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8636 size += 4;
8637 }
8638 else
8639 {
ad8e1ba5
AM		 8640 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8641 variants. */
ac2df442
AM		 8642 bfd_vma r2off = 0;
8643
721956f4
AM		 8644 off = (stub_entry->target_value
8645 + stub_entry->target_section->output_offset
8646 + stub_entry->target_section->output_section->vma);
eea6121a 8647 off -= (stub_entry->stub_sec->size
721956f4
AM		 8648 + stub_entry->stub_sec->output_offset
8649 + stub_entry->stub_sec->output_section->vma);
8650
ad8e1ba5
AM		 8651 /* Reset the stub type from the plt variant in case we now
8652 can reach with a shorter stub. */
8653 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8654 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8655
8656 size = 4;
8657 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8658 {
ac2df442
AM		 8659 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8660 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8661 size = 12;
8662 if (PPC_HA (r2off) != 0)
8663 size = 16;
8664 off -= size - 4;
ad8e1ba5
AM		 8665 }
8666
8667 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8668 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8669 {
8670 struct ppc_branch_hash_entry *br_entry;
ac2df442 8671 unsigned int indx;
721956f4
AM		 8672
8673 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8674 stub_entry->root.string + 9,
b34976b6 8675 TRUE, FALSE);
721956f4
AM		 8676 if (br_entry == NULL)
8677 {
8678 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8679 stub_entry->root.string);
b34976b6
AM		 8680 htab->stub_error = TRUE;
8681 return FALSE;
721956f4
AM		 8682 }
8683
8684 if (br_entry->iter != htab->stub_iteration)
8685 {
8686 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8687 br_entry->offset = htab->brlt->size;
8688 htab->brlt->size += 8;
63bc6f6c 8689
ee75fd95 8690 if (htab->relbrlt != NULL)
eea6121a 8691 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 8692 else if (info->emitrelocations)
8693 {
8694 htab->brlt->reloc_count += 1;
8695 htab->brlt->flags |= SEC_RELOC;
8696 }
721956f4 8697 }
ad8e1ba5
AM		 8698
8699 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 8700 off = (br_entry->offset
8701 + htab->brlt->output_offset
8702 + htab->brlt->output_section->vma
8703 - elf_gp (htab->brlt->output_section->owner)
8704 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8705
8706 indx = off;
8707 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8708 {
8709 size = 12;
8710 if (PPC_HA (indx) != 0)
8711 size = 16;
8712 }
8713 else
8714 {
8715 size = 20;
8716 if (PPC_HA (indx) != 0)
8717 size += 4;
8718
8719 if (PPC_HA (r2off) != 0)
8720 size += 4;
8721 }
721956f4 8722 }
84f5d08e
AM		 8723 else if (info->emitrelocations)
8724 {
8725 stub_entry->stub_sec->reloc_count += 1;
8726 stub_entry->stub_sec->flags |= SEC_RELOC;
8727 }
721956f4
AM		 8728 }
8729
eea6121a 8730 stub_entry->stub_sec->size += size;
b34976b6 8731 return TRUE;
721956f4
AM		 8732}
8733
8734/* Set up various things so that we can make a list of input sections
8735 for each output section included in the link. Returns -1 on error,
cedb70c5 8736 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8737
8738int
4c52953f
AM		 8739ppc64_elf_setup_section_lists (bfd *output_bfd,
8740 struct bfd_link_info *info,
8741 int no_multi_toc)
721956f4
AM		 8742{
8743 bfd *input_bfd;
734b6cf9 8744 int top_id, top_index, id;
721956f4 8745 asection *section;
734b6cf9 8746 asection **input_list;
721956f4
AM		 8747 bfd_size_type amt;
8748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8749
4c52953f
AM		 8750 htab->no_multi_toc = no_multi_toc;
8751
4ce794b7 8752 if (htab->brlt == NULL)
721956f4
AM		 8753 return 0;
8754
1e2f5b6e 8755 /* Find the top input section id. */
3d6f9012 8756 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8757 input_bfd != NULL;
8758 input_bfd = input_bfd->link_next)
8759 {
721956f4
AM		 8760 for (section = input_bfd->sections;
8761 section != NULL;
8762 section = section->next)
8763 {
8764 if (top_id < section->id)
8765 top_id = section->id;
8766 }
8767 }
721956f4 8768
8f3bab57 8769 htab->top_id = top_id;
721956f4 8770 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8771 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8772 if (htab->stub_group == NULL)
8773 return -1;
8774
3d6f9012
AM		 8775 /* Set toc_off for com, und, abs and ind sections. */
8776 for (id = 0; id < 3; id++)
8777 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8778
3d6f9012 8779 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8780
8781 /* We can't use output_bfd->section_count here to find the top output
8782 section index as some sections may have been removed, and
8423293d 8783 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8784 for (section = output_bfd->sections, top_index = 0;
8785 section != NULL;
8786 section = section->next)
8787 {
8788 if (top_index < section->index)
8789 top_index = section->index;
8790 }
8791
8792 htab->top_index = top_index;
8793 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8794 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8795 htab->input_list = input_list;
8796 if (input_list == NULL)
8797 return -1;
8798
721956f4
AM		 8799 return 1;
8800}
8801
e717da7e
AM		 8802/* The linker repeatedly calls this function for each TOC input section
8803 and linker generated GOT section. Group input bfds such that the toc
8804 within a group is less than 64k in size. Will break with cute linker
8805 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8806
8807void
4ce794b7 8808ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8809{
8810 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8811
4c52953f
AM		 8812 if (!htab->no_multi_toc)
8813 {
8814 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8815 bfd_vma off = addr - htab->toc_curr;
8816
8817 if (off + isec->size > 0x10000)
8818 htab->toc_curr = addr;
99877b66 8819
4c52953f
AM		 8820 elf_gp (isec->owner) = (htab->toc_curr
8821 - elf_gp (isec->output_section->owner)
8822 + TOC_BASE_OFF);
8823 }
ad8e1ba5
AM		 8824}
8825
8826/* Called after the last call to the above function. */
8827
8828void
4c52953f 8829ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8830{
8831 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8832
4c52953f
AM		 8833 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8834
ad8e1ba5
AM		 8835 /* toc_curr tracks the TOC offset used for code sections below in
8836 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8837 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8838}
8839
9b5ecbd0
AM		 8840/* No toc references were found in ISEC. If the code in ISEC makes no
8841 calls, then there's no need to use toc adjusting stubs when branching
8842 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8843 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8844 needed, and 2 if a cyclical call-graph was found but no other reason
8845 for a stub was detected. If called from the top level, a return of
8846 2 means the same as a return of 0. */
9b5ecbd0
AM		 8847
8848static int
4ce794b7 8849toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8850{
4c52953f
AM		 8851 Elf_Internal_Rela *relstart, *rel;
8852 Elf_Internal_Sym *local_syms;
9b5ecbd0 8853 int ret;
4c52953f 8854 struct ppc_link_hash_table *htab;
9b5ecbd0 8855
772119ce
AM		 8856 /* We know none of our code bearing sections will need toc stubs. */
8857 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8858 return 0;
8859
eea6121a 8860 if (isec->size == 0)
082c50f8
AM		 8861 return 0;
8862
4c52953f
AM		 8863 if (isec->output_section == NULL)
8864 return 0;
8865
9b5ecbd0
AM		 8866 /* Hack for linux kernel. .fixup contains branches, but only back to
8867 the function that hit an exception. */
4c52953f
AM		 8868 if (strcmp (isec->name, ".fixup") == 0)
8869 return 0;
9b5ecbd0 8870
4c52953f
AM		 8871 if (isec->reloc_count == 0)
8872 return 0;
8873
8874 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8875 info->keep_memory);
8876 if (relstart == NULL)
8877 return -1;
8878
8879 /* Look for branches to outside of this section. */
8880 local_syms = NULL;
8881 ret = 0;
8882 htab = ppc_hash_table (info);
8883 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8884 {
4c52953f
AM		 8885 enum elf_ppc64_reloc_type r_type;
8886 unsigned long r_symndx;
8887 struct elf_link_hash_entry *h;
8888 Elf_Internal_Sym *sym;
8889 asection *sym_sec;
8890 long *opd_adjust;
8891 bfd_vma sym_value;
8892 bfd_vma dest;
8893
8894 r_type = ELF64_R_TYPE (rel->r_info);
8895 if (r_type != R_PPC64_REL24
8896 && r_type != R_PPC64_REL14
8897 && r_type != R_PPC64_REL14_BRTAKEN
8898 && r_type != R_PPC64_REL14_BRNTAKEN)
8899 continue;
8900
8901 r_symndx = ELF64_R_SYM (rel->r_info);
8902 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8903 isec->owner))
9b5ecbd0 8904 {
4c52953f
AM		 8905 ret = -1;
8906 break;
9b5ecbd0 8907 }
9b5ecbd0 8908
2917689a
AM		 8909 /* Calls to dynamic lib functions go through a plt call stub
8910 that uses r2. Branches to undefined symbols might be a call
8911 using old-style dot symbols that can be satisfied by a plt
8912 call into a new-style dynamic library. */
4c52953f 8913 if (sym_sec == NULL)
2917689a
AM		 8914 {
8915 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8916 if (eh != NULL
8917 && eh->oh != NULL
8918 && eh->oh->elf.plt.plist != NULL)
8919 {
8920 ret = 1;
8921 break;
8922 }
4c52953f 8923
2917689a
AM		 8924 /* Ignore other undefined symbols. */
8925 continue;
8926 }
8927
8928 /* Assume branches to other sections not included in the link need
8929 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8930 if (sym_sec->output_section == NULL)
8931 {
8932 ret = 1;
8933 break;
8934 }
8935
8936 if (h == NULL)
8937 sym_value = sym->st_value;
8938 else
8939 {
8940 if (h->root.type != bfd_link_hash_defined
8941 && h->root.type != bfd_link_hash_defweak)
8942 abort ();
8943 sym_value = h->root.u.def.value;
8944 }
8945 sym_value += rel->r_addend;
8946
8947 /* If this branch reloc uses an opd sym, find the code section. */
8948 opd_adjust = get_opd_info (sym_sec);
8949 if (opd_adjust != NULL)
8950 {
4c52953f
AM		 8951 if (h == NULL)
8952 {
8953 long adjust;
8954
8955 adjust = opd_adjust[sym->st_value / 8];
8956 if (adjust == -1)
8957 /* Assume deleted functions won't ever be called. */
8958 continue;
8959 sym_value += adjust;
8960 }
8961
8962 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8963 if (dest == (bfd_vma) -1)
8964 continue;
8965 }
8966 else
8967 dest = (sym_value
8968 + sym_sec->output_offset
8969 + sym_sec->output_section->vma);
8970
8971 /* Ignore branch to self. */
8972 if (sym_sec == isec)
8973 continue;
8974
8975 /* If the called function uses the toc, we need a stub. */
8976 if (sym_sec->has_toc_reloc
8977 || sym_sec->makes_toc_func_call)
8978 {
8979 ret = 1;
8980 break;
8981 }
8982
8983 /* Assume any branch that needs a long branch stub might in fact
8984 need a plt_branch stub. A plt_branch stub uses r2. */
8985 else if (dest - (isec->output_offset
8986 + isec->output_section->vma
8987 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8988 {
8989 ret = 1;
8990 break;
8991 }
4c52953f
AM		 8992
8993 /* If calling back to a section in the process of being tested, we
8994 can't say for sure that no toc adjusting stubs are needed, so
8995 don't return zero. */
8996 else if (sym_sec->call_check_in_progress)
8997 ret = 2;
8998
8999 /* Branches to another section that itself doesn't have any TOC
9000 references are OK. Recursively call ourselves to check. */
9001 else if (sym_sec->id <= htab->top_id
9002 && htab->stub_group[sym_sec->id].toc_off == 0)
9003 {
9004 int recur;
9005
9006 /* Mark current section as indeterminate, so that other
9007 sections that call back to current won't be marked as
9008 known. */
9009 isec->call_check_in_progress = 1;
9010 recur = toc_adjusting_stub_needed (info, sym_sec);
9011 isec->call_check_in_progress = 0;
9012
9013 if (recur < 0)
9014 {
9015 /* An error. Exit. */
9016 ret = -1;
9017 break;
9018 }
9019 else if (recur <= 1)
9020 {
9021 /* Known result. Mark as checked and set section flag. */
9022 htab->stub_group[sym_sec->id].toc_off = 1;
9023 if (recur != 0)
9024 {
9025 sym_sec->makes_toc_func_call = 1;
9026 ret = 1;
9027 break;
9028 }
9029 }
9030 else
9031 {
9032 /* Unknown result. Continue checking. */
9033 ret = 2;
9034 }
9035 }
9b5ecbd0
AM		 9036 }
9037
4c52953f
AM		 9038 if (local_syms != NULL
9039 && (elf_tdata (isec->owner)->symtab_hdr.contents
9040 != (unsigned char *) local_syms))
9041 free (local_syms);
9042 if (elf_section_data (isec)->relocs != relstart)
9043 free (relstart);
9044
9b5ecbd0
AM		 9045 return ret;
9046}
9047
721956f4
AM		 9048/* The linker repeatedly calls this function for each input section,
9049 in the order that input sections are linked into output sections.
9050 Build lists of input sections to determine groupings between which
9051 we may insert linker stubs. */
9052
9b5ecbd0 9053bfd_boolean
4ce794b7 9054ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 9055{
9056 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9057
734b6cf9
AM		 9058 if ((isec->output_section->flags & SEC_CODE) != 0
9059 && isec->output_section->index <= htab->top_index)
721956f4 9060 {
734b6cf9 9061 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9062 /* Steal the link_sec pointer for our list. */
721956f4 9063#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 9064 /* This happens to make the list in reverse order,
9065 which is what we want. */
734b6cf9
AM		 9066 PREV_SEC (isec) = *list;
9067 *list = isec;
721956f4 9068 }
ad8e1ba5 9069
4c52953f 9070 if (htab->multi_toc_needed)
9b5ecbd0 9071 {
4c52953f
AM		 9072 /* If a code section has a function that uses the TOC then we need
9073 to use the right TOC (obviously). Also, make sure that .opd gets
9074 the correct TOC value for R_PPC64_TOC relocs that don't have or
9075 can't find their function symbol (shouldn't ever happen now). */
9076 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
9077 {
9078 if (elf_gp (isec->owner) != 0)
9079 htab->toc_curr = elf_gp (isec->owner);
9080 }
9081 else if (htab->stub_group[isec->id].toc_off == 0)
9082 {
9083 int ret = toc_adjusting_stub_needed (info, isec);
9084 if (ret < 0)
9085 return FALSE;
9086 else
9087 isec->makes_toc_func_call = ret & 1;
9088 }
9b5ecbd0 9089 }
ad8e1ba5
AM		 9090
9091 /* Functions that don't use the TOC can belong in any TOC group.
9092 Use the last TOC base. This happens to make _init and _fini
9093 pasting work. */
9094 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9095 return TRUE;
721956f4
AM		 9096}
9097
9098/* See whether we can group stub sections together. Grouping stub
9099 sections may result in fewer stubs. More importantly, we need to
9100 put all .init* and .fini* stubs at the beginning of the .init or
9101 .fini output sections respectively, because glibc splits the
9102 _init and _fini functions into multiple parts. Putting a stub in
9103 the middle of a function is not a good idea. */
9104
9105static void
4ce794b7
AM		 9106group_sections (struct ppc_link_hash_table *htab,
9107 bfd_size_type stub_group_size,
9108 bfd_boolean stubs_always_before_branch)
721956f4 9109{
7c8fe5c4
AM		 9110 asection **list;
9111 bfd_size_type stub14_group_size;
9112 bfd_boolean suppress_size_errors;
9113
9114 suppress_size_errors = FALSE;
9115 stub14_group_size = stub_group_size;
9116 if (stub_group_size == 1)
9117 {
9118 /* Default values. */
9119 if (stubs_always_before_branch)
9120 {
9121 stub_group_size = 0x1e00000;
9122 stub14_group_size = 0x7800;
9123 }
9124 else
9125 {
9126 stub_group_size = 0x1c00000;
9127 stub14_group_size = 0x7000;
9128 }
9129 suppress_size_errors = TRUE;
9130 }
9131
9132 list = htab->input_list + htab->top_index;
734b6cf9 9133 do
721956f4 9134 {
734b6cf9
AM		 9135 asection *tail = *list;
9136 while (tail != NULL)
721956f4 9137 {
734b6cf9
AM		 9138 asection *curr;
9139 asection *prev;
9140 bfd_size_type total;
9141 bfd_boolean big_sec;
9142 bfd_vma curr_toc;
9143
9144 curr = tail;
eea6121a 9145 total = tail->size;
7c8fe5c4
AM		 9146 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9147 ? stub14_group_size : stub_group_size);
9148 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 9149 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9150 tail->owner, tail);
734b6cf9
AM		 9151 curr_toc = htab->stub_group[tail->id].toc_off;
9152
9153 while ((prev = PREV_SEC (curr)) != NULL
9154 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM		 9155 < (ppc64_elf_section_data (prev)->has_14bit_branch
9156 ? stub14_group_size : stub_group_size))
ad8e1ba5 9157 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 9158 curr = prev;
9159
9160 /* OK, the size from the start of CURR to the end is less
9161 than stub_group_size and thus can be handled by one stub
9162 section. (or the tail section is itself larger than
9163 stub_group_size, in which case we may be toast.) We
9164 should really be keeping track of the total size of stubs
9165 added here, as stubs contribute to the final output
9166 section size. That's a little tricky, and this way will
9167 only break if stubs added make the total size more than
9168 2^25, ie. for the default stub_group_size, if stubs total
9169 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9170 do
721956f4
AM		 9171 {
9172 prev = PREV_SEC (tail);
734b6cf9 9173 /* Set up this stub group. */
721956f4
AM		 9174 htab->stub_group[tail->id].link_sec = curr;
9175 }
734b6cf9
AM		 9176 while (tail != curr && (tail = prev) != NULL);
9177
9178 /* But wait, there's more! Input sections up to stub_group_size
9179 bytes before the stub section can be handled by it too.
9180 Don't do this if we have a really large section after the
9181 stubs, as adding more stubs increases the chance that
9182 branches may not reach into the stub section. */
9183 if (!stubs_always_before_branch && !big_sec)
9184 {
9185 total = 0;
9186 while (prev != NULL
9187 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM		 9188 < (ppc64_elf_section_data (prev)->has_14bit_branch
9189 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 9190 && htab->stub_group[prev->id].toc_off == curr_toc)
9191 {
9192 tail = prev;
9193 prev = PREV_SEC (tail);
9194 htab->stub_group[tail->id].link_sec = curr;
9195 }
9196 }
9197 tail = prev;
721956f4
AM		 9198 }
9199 }
734b6cf9
AM		 9200 while (list-- != htab->input_list);
9201 free (htab->input_list);
721956f4
AM		 9202#undef PREV_SEC
9203}
9204
721956f4
AM		 9205/* Determine and set the size of the stub section for a final link.
9206
9207 The basic idea here is to examine all the relocations looking for
9208 PC-relative calls to a target that is unreachable with a "bl"
9209 instruction. */
9210
b34976b6 9211bfd_boolean
4ce794b7 9212ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 9213 struct bfd_link_info *info,
9214 bfd_signed_vma group_size,
9215 asection *(*add_stub_section) (const char *, asection *),
9216 void (*layout_sections_again) (void))
721956f4
AM		 9217{
9218 bfd_size_type stub_group_size;
b34976b6 9219 bfd_boolean stubs_always_before_branch;
721956f4
AM		 9220 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9221
9222 /* Stash our params away. */
721956f4
AM		 9223 htab->add_stub_section = add_stub_section;
9224 htab->layout_sections_again = layout_sections_again;
9225 stubs_always_before_branch = group_size < 0;
9226 if (group_size < 0)
9227 stub_group_size = -group_size;
9228 else
9229 stub_group_size = group_size;
721956f4
AM		 9230
9231 group_sections (htab, stub_group_size, stubs_always_before_branch);
9232
721956f4
AM		 9233 while (1)
9234 {
9235 bfd *input_bfd;
9236 unsigned int bfd_indx;
9237 asection *stub_sec;
721956f4
AM		 9238
9239 htab->stub_iteration += 1;
721956f4
AM		 9240
9241 for (input_bfd = info->input_bfds, bfd_indx = 0;
9242 input_bfd != NULL;
9243 input_bfd = input_bfd->link_next, bfd_indx++)
9244 {
9245 Elf_Internal_Shdr *symtab_hdr;
9246 asection *section;
6cdc0ccc 9247 Elf_Internal_Sym *local_syms = NULL;
721956f4 9248
67f93c31
AM		 9249 if (!is_ppc64_elf_target (input_bfd->xvec))
9250 continue;
9251
721956f4
AM		 9252 /* We'll need the symbol table in a second. */
9253 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9254 if (symtab_hdr->sh_info == 0)
9255 continue;
9256
721956f4
AM		 9257 /* Walk over each section attached to the input bfd. */
9258 for (section = input_bfd->sections;
9259 section != NULL;
9260 section = section->next)
9261 {
721956f4 9262 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 9263
9264 /* If there aren't any relocs, then there's nothing more
9265 to do. */
9266 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 9267 || (section->flags & SEC_ALLOC) == 0
9268 || (section->flags & SEC_LOAD) == 0
9269 || (section->flags & SEC_CODE) == 0
721956f4
AM		 9270 || section->reloc_count == 0)
9271 continue;
9272
9273 /* If this section is a link-once section that will be
9274 discarded, then don't create any stubs. */
9275 if (section->output_section == NULL
9276 || section->output_section->owner != output_bfd)
9277 continue;
9278
1e2f5b6e
AM		 9279 /* Get the relocs. */
9280 internal_relocs
4ce794b7 9281 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9282 info->keep_memory);
721956f4 9283 if (internal_relocs == NULL)
1e2f5b6e 9284 goto error_ret_free_local;
721956f4
AM		 9285
9286 /* Now examine each relocation. */
9287 irela = internal_relocs;
9288 irelaend = irela + section->reloc_count;
9289 for (; irela < irelaend; irela++)
9290 {
4ce794b7
AM		 9291 enum elf_ppc64_reloc_type r_type;
9292 unsigned int r_indx;
721956f4
AM		 9293 enum ppc_stub_type stub_type;
9294 struct ppc_stub_hash_entry *stub_entry;
8387904d 9295 asection *sym_sec, *code_sec;
721956f4
AM		 9296 bfd_vma sym_value;
9297 bfd_vma destination;
8843416a 9298 bfd_boolean ok_dest;
721956f4 9299 struct ppc_link_hash_entry *hash;
8387904d 9300 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 9301 struct elf_link_hash_entry *h;
9302 Elf_Internal_Sym *sym;
721956f4
AM		 9303 char *stub_name;
9304 const asection *id_sec;
8387904d 9305 long *opd_adjust;
721956f4
AM		 9306
9307 r_type = ELF64_R_TYPE (irela->r_info);
9308 r_indx = ELF64_R_SYM (irela->r_info);
9309
4ce794b7 9310 if (r_type >= R_PPC64_max)
721956f4
AM		 9311 {
9312 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9313 goto error_ret_free_internal;
721956f4
AM		 9314 }
9315
9316 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 9317 if (r_type != R_PPC64_REL24
9318 && r_type != R_PPC64_REL14
9319 && r_type != R_PPC64_REL14_BRTAKEN
9320 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 9321 continue;
9322
9323 /* Now determine the call target, its name, value,
9324 section. */
411e1bfb
AM		 9325 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9326 r_indx, input_bfd))
9327 goto error_ret_free_internal;
9328 hash = (struct ppc_link_hash_entry *) h;
9329
8843416a 9330 ok_dest = FALSE;
8387904d 9331 fdh = NULL;
7fe2b9a6 9332 sym_value = 0;
411e1bfb 9333 if (hash == NULL)
721956f4 9334 {
411e1bfb 9335 sym_value = sym->st_value;
8843416a 9336 ok_dest = TRUE;
721956f4 9337 }
7fe2b9a6
AM		 9338 else if (hash->elf.root.type == bfd_link_hash_defined
9339 || hash->elf.root.type == bfd_link_hash_defweak)
9340 {
9341 sym_value = hash->elf.root.u.def.value;
9342 if (sym_sec->output_section != NULL)
9343 ok_dest = TRUE;
9344 }
9345 else if (hash->elf.root.type == bfd_link_hash_undefweak
9346 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9347 {
99877b66 9348 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 9349 use the func descriptor sym instead if it is
9350 defined. */
ceb1f1ef 9351 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 9352 && (fdh = get_fdh (hash, htab)) != NULL)
9353 {
8387904d
AM		 9354 if (fdh->elf.root.type == bfd_link_hash_defined
9355 || fdh->elf.root.type == bfd_link_hash_defweak)
9356 {
9357 sym_sec = fdh->elf.root.u.def.section;
9358 sym_value = fdh->elf.root.u.def.value;
9359 if (sym_sec->output_section != NULL)
9360 ok_dest = TRUE;
9361 }
99877b66
AM		 9362 else
9363 fdh = NULL;
8387904d 9364 }
7fe2b9a6
AM		 9365 }
9366 else
9367 {
9368 bfd_set_error (bfd_error_bad_value);
9369 goto error_ret_free_internal;
721956f4
AM		 9370 }
9371
8843416a
AM		 9372 destination = 0;
9373 if (ok_dest)
9374 {
9375 sym_value += irela->r_addend;
9376 destination = (sym_value
9377 + sym_sec->output_offset
9378 + sym_sec->output_section->vma);
9379 }
9380
8387904d
AM		 9381 code_sec = sym_sec;
9382 opd_adjust = get_opd_info (sym_sec);
9383 if (opd_adjust != NULL)
9384 {
9385 bfd_vma dest;
9386
9387 if (hash == NULL)
9388 {
3f764659 9389 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 9390 if (adjust == -1)
9391 continue;
9392 sym_value += adjust;
9393 }
9394 dest = opd_entry_value (sym_sec, sym_value,
9395 &code_sec, &sym_value);
9396 if (dest != (bfd_vma) -1)
9397 {
9398 destination = dest;
9399 if (fdh != NULL)
9400 {
9401 /* Fixup old ABI sym to point at code
9402 entry. */
99877b66 9403 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9404 hash->elf.root.u.def.section = code_sec;
9405 hash->elf.root.u.def.value = sym_value;
9406 }
9407 }
9408 }
9409
721956f4
AM		 9410 /* Determine what (if any) linker stub is needed. */
9411 stub_type = ppc_type_of_stub (section, irela, &hash,
9412 destination);
ad8e1ba5
AM		 9413
9414 if (stub_type != ppc_stub_plt_call)
9415 {
9416 /* Check whether we need a TOC adjusting stub.
9417 Since the linker pastes together pieces from
9418 different object files when creating the
9419 _init and _fini functions, it may be that a
9420 call to what looks like a local sym is in
9421 fact a call needing a TOC adjustment. */
8387904d
AM		 9422 if (code_sec != NULL
9423 && code_sec->output_section != NULL
9424 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9425 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9426 && (code_sec->has_toc_reloc
9427 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9428 stub_type = ppc_stub_long_branch_r2off;
9429 }
9430
721956f4
AM		 9431 if (stub_type == ppc_stub_none)
9432 continue;
9433
411e1bfb
AM		 9434 /* __tls_get_addr calls might be eliminated. */
9435 if (stub_type != ppc_stub_plt_call
9436 && hash != NULL
8387904d
AM		 9437 && (hash == htab->tls_get_addr
9438 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9439 && section->has_tls_reloc
9440 && irela != internal_relocs)
9441 {
9442 /* Get tls info. */
e7b938ca 9443 char *tls_mask;
411e1bfb 9444
0d4792f7 9445 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9446 irela - 1, input_bfd))
9447 goto error_ret_free_internal;
e7b938ca 9448 if (*tls_mask != 0)
411e1bfb
AM		 9449 continue;
9450 }
9451
721956f4
AM		 9452 /* Support for grouping stub sections. */
9453 id_sec = htab->stub_group[section->id].link_sec;
9454
9455 /* Get the name of this stub. */
9456 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9457 if (!stub_name)
9458 goto error_ret_free_internal;
9459
9460 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9461 stub_name, FALSE, FALSE);
721956f4
AM		 9462 if (stub_entry != NULL)
9463 {
9464 /* The proper stub has already been created. */
9465 free (stub_name);
9466 continue;
9467 }
9468
9469 stub_entry = ppc_add_stub (stub_name, section, htab);
9470 if (stub_entry == NULL)
9471 {
9472 free (stub_name);
6cdc0ccc
AM		 9473 error_ret_free_internal:
9474 if (elf_section_data (section)->relocs == NULL)
9475 free (internal_relocs);
9476 error_ret_free_local:
9477 if (local_syms != NULL
9478 && (symtab_hdr->contents
9479 != (unsigned char *) local_syms))
9480 free (local_syms);
b34976b6 9481 return FALSE;
721956f4
AM		 9482 }
9483
ad8e1ba5 9484 stub_entry->stub_type = stub_type;
721956f4 9485 stub_entry->target_value = sym_value;
8387904d 9486 stub_entry->target_section = code_sec;
721956f4 9487 stub_entry->h = hash;
411e1bfb 9488 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9489
9490 if (stub_entry->h != NULL)
9491 htab->stub_globals += 1;
721956f4
AM		 9492 }
9493
9494 /* We're done with the internal relocs, free them. */
6cdc0ccc 9495 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9496 free (internal_relocs);
721956f4 9497 }
6cdc0ccc
AM		 9498
9499 if (local_syms != NULL
9500 && symtab_hdr->contents != (unsigned char *) local_syms)
9501 {
9502 if (!info->keep_memory)
9503 free (local_syms);
9504 else
9505 symtab_hdr->contents = (unsigned char *) local_syms;
9506 }
721956f4
AM		 9507 }
9508
5c3dead3 9509 /* We may have added some stubs. Find out the new size of the
721956f4
AM		 9510 stub sections. */
9511 for (stub_sec = htab->stub_bfd->sections;
9512 stub_sec != NULL;
9513 stub_sec = stub_sec->next)
e717da7e 9514 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9515 {
5c3dead3 9516 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 9517 stub_sec->size = 0;
9518 stub_sec->reloc_count = 0;
84f5d08e 9519 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9520 }
eea6121a
AM		 9521
9522 htab->brlt->size = 0;
84f5d08e
AM		 9523 htab->brlt->reloc_count = 0;
9524 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9525 if (htab->relbrlt != NULL)
eea6121a 9526 htab->relbrlt->size = 0;
721956f4 9527
63bc6f6c 9528 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9529
5c3dead3
AM		 9530 for (stub_sec = htab->stub_bfd->sections;
9531 stub_sec != NULL;
9532 stub_sec = stub_sec->next)
9533 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9534 && stub_sec->rawsize != stub_sec->size)
9535 break;
9536
9537 /* Exit from this loop when no stubs have been added, and no stubs
9538 have changed size. */
9539 if (stub_sec == NULL)
9540 break;
9541
721956f4
AM		 9542 /* Ask the linker to do its stuff. */
9543 (*htab->layout_sections_again) ();
9544 }
9545
c456f082 9546 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9547 section is empty, but it's too late. If we strip sections here,
9548 the dynamic symbol table is corrupted since the section symbol
9549 for the stripped section isn't written. */
721956f4 9550
b34976b6 9551 return TRUE;
721956f4
AM		 9552}
9553
9554/* Called after we have determined section placement. If sections
805fc799 9555 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9556
805fc799 9557bfd_vma
4ce794b7 9558ppc64_elf_toc (bfd *obfd)
721956f4 9559{
805fc799
AM		 9560 asection *s;
9561 bfd_vma TOCstart;
721956f4 9562
805fc799
AM		 9563 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9564 order. The TOC starts where the first of these sections starts. */
9565 s = bfd_get_section_by_name (obfd, ".got");
9566 if (s == NULL)
9567 s = bfd_get_section_by_name (obfd, ".toc");
9568 if (s == NULL)
9569 s = bfd_get_section_by_name (obfd, ".tocbss");
9570 if (s == NULL)
9571 s = bfd_get_section_by_name (obfd, ".plt");
9572 if (s == NULL)
9573 {
9574 /* This may happen for
9575 o references to TOC base (SYM@toc / TOC[tc0]) without a
9576 .toc directive
9577 o bad linker script
9578 o --gc-sections and empty TOC sections
9579
9580 FIXME: Warn user? */
9581
9582 /* Look for a likely section. We probably won't even be
9583 using TOCstart. */
9584 for (s = obfd->sections; s != NULL; s = s->next)
9585 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9586 == (SEC_ALLOC | SEC_SMALL_DATA))
9587 break;
721956f4 9588 if (s == NULL)
805fc799
AM		 9589 for (s = obfd->sections; s != NULL; s = s->next)
9590 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9591 == (SEC_ALLOC | SEC_SMALL_DATA))
9592 break;
721956f4 9593 if (s == NULL)
805fc799
AM		 9594 for (s = obfd->sections; s != NULL; s = s->next)
9595 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9596 break;
721956f4 9597 if (s == NULL)
805fc799
AM		 9598 for (s = obfd->sections; s != NULL; s = s->next)
9599 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9600 break;
9601 }
721956f4 9602
805fc799
AM		 9603 TOCstart = 0;
9604 if (s != NULL)
9605 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9606
805fc799 9607 return TOCstart;
721956f4
AM		 9608}
9609
9610/* Build all the stubs associated with the current output file.
9611 The stubs are kept in a hash table attached to the main linker
9612 hash table. This function is called via gldelf64ppc_finish. */
9613
b34976b6 9614bfd_boolean
4ce794b7
AM		 9615ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9616 struct bfd_link_info *info,
9617 char **stats)
5d1634d7
AM		 9618{
9619 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9620 asection *stub_sec;
5d1634d7 9621 bfd_byte *p;
e717da7e 9622 int stub_sec_count = 0;
5d1634d7 9623
ad8e1ba5 9624 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9625
9626 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9627 for (stub_sec = htab->stub_bfd->sections;
9628 stub_sec != NULL;
9629 stub_sec = stub_sec->next)
eea6121a
AM		 9630 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9631 && stub_sec->size != 0)
e717da7e 9632 {
eea6121a
AM		 9633 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9634 if (stub_sec->contents == NULL)
9635 return FALSE;
9636 /* We want to check that built size is the same as calculated
9637 size. rawsize is a convenient location to use. */
9638 stub_sec->rawsize = stub_sec->size;
9639 stub_sec->size = 0;
e717da7e 9640 }
5d1634d7 9641
23eb7e01 9642 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9643 {
9f951329 9644 unsigned int indx;
ad8e1ba5 9645 bfd_vma plt0;
9f951329 9646
721956f4 9647 /* Build the .glink plt call stub. */
97b639ba
AM		 9648 if (htab->emit_stub_syms)
9649 {
9650 struct elf_link_hash_entry *h;
9651 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9652 if (h == NULL)
9653 return FALSE;
9654 if (h->root.type == bfd_link_hash_new)
9655 {
9656 h->root.type = bfd_link_hash_defined;
9657 h->root.u.def.section = htab->glink;
ee4bf8d2 9658 h->root.u.def.value = 8;
f5385ebf
AM		 9659 h->ref_regular = 1;
9660 h->def_regular = 1;
9661 h->ref_regular_nonweak = 1;
9662 h->forced_local = 1;
9663 h->non_elf = 0;
97b639ba
AM		 9664 }
9665 }
4ce794b7 9666 p = htab->glink->contents;
ee4bf8d2
AM		 9667 plt0 = (htab->plt->output_section->vma
9668 + htab->plt->output_offset
9669 - (htab->glink->output_section->vma
9670 + htab->glink->output_offset
9671 + 16));
9672 bfd_put_64 (htab->glink->owner, plt0, p);
9673 p += 8;
9674 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9675 p += 4;
ee4bf8d2 9676 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9677 p += 4;
ee4bf8d2 9678 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9679 p += 4;
ee4bf8d2 9680 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9681 p += 4;
ee4bf8d2 9682 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9683 p += 4;
ee4bf8d2 9684 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9685 p += 4;
ee4bf8d2 9686 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9687 p += 4;
4ce794b7 9688 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9689 p += 4;
4ce794b7 9690 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9691 p += 4;
4ce794b7 9692 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9693 p += 4;
4ce794b7 9694 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9695 p += 4;
ee4bf8d2
AM		 9696 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9697 {
9698 bfd_put_32 (htab->glink->owner, NOP, p);
9699 p += 4;
9700 }
ad8e1ba5 9701
9f951329
AM		 9702 /* Build the .glink lazy link call stubs. */
9703 indx = 0;
eea6121a 9704 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9705 {
9706 if (indx < 0x8000)
9707 {
4ce794b7 9708 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9709 p += 4;
9710 }
9711 else
9712 {
4ce794b7 9713 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9714 p += 4;
4ce794b7 9715 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9716 p += 4;
9717 }
4ce794b7 9718 bfd_put_32 (htab->glink->owner,
ee4bf8d2 9719 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 9720 indx++;
9f951329
AM		 9721 p += 4;
9722 }
eea6121a 9723 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9724 }
5d1634d7 9725
eea6121a 9726 if (htab->brlt->size != 0)
721956f4 9727 {
4ce794b7 9728 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9729 htab->brlt->size);
4ce794b7 9730 if (htab->brlt->contents == NULL)
b34976b6 9731 return FALSE;
721956f4 9732 }
ee75fd95 9733 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9734 {
9735 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9736 htab->relbrlt->size);
63bc6f6c
AM		 9737 if (htab->relbrlt->contents == NULL)
9738 return FALSE;
9739 }
5d1634d7 9740
721956f4
AM		 9741 /* Build the stubs as directed by the stub hash table. */
9742 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9743
aa8a7074
AM		 9744 if (htab->relbrlt != NULL)
9745 htab->relbrlt->reloc_count = 0;
9746
721956f4
AM		 9747 for (stub_sec = htab->stub_bfd->sections;
9748 stub_sec != NULL;
9749 stub_sec = stub_sec->next)
e717da7e
AM		 9750 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9751 {
9752 stub_sec_count += 1;
eea6121a 9753 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9754 break;
9755 }
5d1634d7 9756
721956f4 9757 if (stub_sec != NULL
eea6121a 9758 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9759 {
b34976b6 9760 htab->stub_error = TRUE;
721956f4 9761 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9762 }
721956f4 9763
d2a300cf
AM		 9764 if (htab->stub_error)
9765 return FALSE;
9766
9767 if (stats != NULL)
9768 {
9769 *stats = bfd_malloc (500);
9770 if (*stats == NULL)
9771 return FALSE;
9772
ee75fd95 9773 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9774 " branch %lu\n"
9775 " toc adjust %lu\n"
9776 " long branch %lu\n"
9777 " long toc adj %lu\n"
9778 " plt call %lu"),
e717da7e 9779 stub_sec_count,
ee75fd95 9780 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9781 htab->stub_count[ppc_stub_long_branch - 1],
9782 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9783 htab->stub_count[ppc_stub_plt_branch - 1],
9784 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9785 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9786 }
9787 return TRUE;
5bd4f169
AM		 9788}
9789
99877b66
AM		 9790/* This function undoes the changes made by add_symbol_adjust. */
9791
9792static bfd_boolean
9793undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9794{
9795 struct ppc_link_hash_entry *eh;
9796
9797 if (h->root.type == bfd_link_hash_indirect)
9798 return TRUE;
9799
9800 if (h->root.type == bfd_link_hash_warning)
9801 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9802
9803 eh = (struct ppc_link_hash_entry *) h;
9804 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9805 return TRUE;
9806
9807 eh->elf.root.type = bfd_link_hash_undefined;
9808 return TRUE;
9809}
9810
9811void
9812ppc64_elf_restore_symbols (struct bfd_link_info *info)
9813{
9814 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9815 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9816}
9817
60124e18
AM		 9818/* What to do when ld finds relocations against symbols defined in
9819 discarded sections. */
9820
9821static unsigned int
9822ppc64_elf_action_discarded (asection *sec)
9823{
9824 if (strcmp (".opd", sec->name) == 0)
9825 return 0;
9826
9827 if (strcmp (".toc", sec->name) == 0)
9828 return 0;
9829
bce50a28
JJ		 9830 if (strcmp (".toc1", sec->name) == 0)
9831 return 0;
9832
60124e18
AM		 9833 return _bfd_elf_default_action_discarded (sec);
9834}
9835
5bd4f169
AM		 9836/* The RELOCATE_SECTION function is called by the ELF backend linker
9837 to handle the relocations for a section.
9838
9839 The relocs are always passed as Rela structures; if the section
9840 actually uses Rel structures, the r_addend field will always be
9841 zero.
9842
9843 This function is responsible for adjust the section contents as
9844 necessary, and (if using Rela relocs and generating a
1049f94e 9845 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9846 necessary.
9847
9848 This function does not have to worry about setting the reloc
9849 address or the reloc symbol index.
9850
9851 LOCAL_SYMS is a pointer to the swapped in local symbols.
9852
9853 LOCAL_SECTIONS is an array giving the section in the input file
9854 corresponding to the st_shndx field of each local symbol.
9855
9856 The global hash table entry for the global symbols can be found
9857 via elf_sym_hashes (input_bfd).
9858
1049f94e 9859 When generating relocatable output, this function must handle
5bd4f169
AM		 9860 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9861 going to be the section symbol corresponding to the output
9862 section, which means that the addend must be adjusted
9863 accordingly. */
9864
b34976b6 9865static bfd_boolean
4ce794b7
AM		 9866ppc64_elf_relocate_section (bfd *output_bfd,
9867 struct bfd_link_info *info,
9868 bfd *input_bfd,
9869 asection *input_section,
9870 bfd_byte *contents,
9871 Elf_Internal_Rela *relocs,
9872 Elf_Internal_Sym *local_syms,
9873 asection **local_sections)
5bd4f169 9874{
65f38f15 9875 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9876 Elf_Internal_Shdr *symtab_hdr;
9877 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9878 Elf_Internal_Rela *rel;
9879 Elf_Internal_Rela *relend;
411e1bfb
AM		 9880 Elf_Internal_Rela outrel;
9881 bfd_byte *loc;
411e1bfb 9882 struct got_entry **local_got_ents;
5bd4f169 9883 bfd_vma TOCstart;
b34976b6
AM		 9884 bfd_boolean ret = TRUE;
9885 bfd_boolean is_opd;
96e0dda4 9886 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9887 bfd_boolean is_power4 = FALSE;
4fe5ca5b 9888 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 9889
65f38f15 9890 /* Initialize howto table if needed. */
5bd4f169 9891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9892 ppc_howto_init ();
9893
65f38f15 9894 htab = ppc_hash_table (info);
ee75fd95
AM		 9895
9896 /* Don't relocate stub sections. */
9897 if (input_section->owner == htab->stub_bfd)
9898 return TRUE;
9899
411e1bfb 9900 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9901 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9902 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9903 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 9904 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 9905
5bd4f169
AM		 9906 rel = relocs;
9907 relend = relocs + input_section->reloc_count;
9908 for (; rel < relend; rel++)
9909 {
04c9666a 9910 enum elf_ppc64_reloc_type r_type;
4cc603a5 9911 bfd_vma addend, orig_addend;
5bd4f169
AM		 9912 bfd_reloc_status_type r;
9913 Elf_Internal_Sym *sym;
9914 asection *sec;
039b3fef
AM		 9915 struct elf_link_hash_entry *h_elf;
9916 struct ppc_link_hash_entry *h;
9917 struct ppc_link_hash_entry *fdh;
5bd4f169 9918 const char *sym_name;
0d4792f7 9919 unsigned long r_symndx, toc_symndx;
951fd09b 9920 char tls_mask, tls_gd, tls_type;
0d4792f7 9921 char sym_type;
5bd4f169 9922 bfd_vma relocation;
b34976b6
AM		 9923 bfd_boolean unresolved_reloc;
9924 bfd_boolean warned;
50bc7936 9925 unsigned long insn, mask;
721956f4
AM		 9926 struct ppc_stub_hash_entry *stub_entry;
9927 bfd_vma max_br_offset;
9928 bfd_vma from;
5bd4f169 9929
4ce794b7 9930 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9931 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9932
9933 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9934 symbol of the previous ADDR64 reloc. The symbol gives us the
9935 proper TOC base to use. */
9936 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9937 && rel != relocs
9938 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9939 && is_opd)
9940 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9941
4ce794b7
AM		 9942 sym = NULL;
9943 sec = NULL;
039b3fef 9944 h_elf = NULL;
4ce794b7 9945 sym_name = NULL;
b34976b6
AM		 9946 unresolved_reloc = FALSE;
9947 warned = FALSE;
4cc603a5 9948 orig_addend = rel->r_addend;
65f38f15 9949
0b13192e 9950 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9951 {
9952 /* It's a local symbol. */
4025353c
AM		 9953 long *opd_adjust;
9954
5bd4f169
AM		 9955 sym = local_syms + r_symndx;
9956 sec = local_sections[r_symndx];
26c61ae5 9957 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9958 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9959 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9960 opd_adjust = get_opd_info (sec);
9961 if (opd_adjust != NULL)
1e2f5b6e 9962 {
3f764659 9963 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9964 if (adjust == -1)
9965 relocation = 0;
9966 else
4cc603a5
AM		 9967 {
9968 /* If this is a relocation against the opd section sym
9969 and we have edited .opd, adjust the reloc addend so
9970 that ld -r and ld --emit-relocs output is correct.
9971 If it is a reloc against some other .opd symbol,
9972 then the symbol value will be adjusted later. */
9973 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
9974 rel->r_addend += adjust;
9975 else
9976 relocation += adjust;
9977 }
1e2f5b6e 9978 }
5bd4f169
AM		 9979 }
9980 else
9981 {
b2a8e766
AM		 9982 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9983 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9984 h_elf, sec, relocation,
b2a8e766 9985 unresolved_reloc, warned);
039b3fef
AM		 9986 sym_name = h_elf->root.root.string;
9987 sym_type = h_elf->type;
5bd4f169 9988 }
039b3fef 9989 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9990
ab96bf03
AM		 9991 if (sec != NULL && elf_discarded_section (sec))
9992 {
9993 /* For relocs against symbols from removed linkonce sections,
9994 or sections discarded by a linker script, we just want the
9995 section contents zeroed. Avoid any special processing. */
9996 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
9997 contents + rel->r_offset);
9998 rel->r_info = 0;
9999 rel->r_addend = 0;
10000 continue;
10001 }
10002
10003 if (info->relocatable)
10004 continue;
10005
951fd09b
AM		 10006 /* TLS optimizations. Replace instruction sequences and relocs
10007 based on information we collected in tls_optimize. We edit
10008 RELOCS so that --emit-relocs will output something sensible
10009 for the final instruction stream. */
10010 tls_mask = 0;
10011 tls_gd = 0;
0d4792f7 10012 toc_symndx = 0;
d881513a 10013 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 10014 {
10015 if (h != NULL)
039b3fef 10016 tls_mask = h->tls_mask;
411e1bfb
AM		 10017 else if (local_got_ents != NULL)
10018 {
e7b938ca
AM		 10019 char *lgot_masks;
10020 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10021 tls_mask = lgot_masks[r_symndx];
411e1bfb 10022 }
0d4792f7
AM		 10023 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10024 {
10025 /* Check for toc tls entries. */
10026 char *toc_tls;
10027
10028 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10029 rel, input_bfd))
10030 return FALSE;
10031
10032 if (toc_tls)
10033 tls_mask = *toc_tls;
10034 }
10035 }
10036
10037 /* Check that tls relocs are used with tls syms, and non-tls
10038 relocs are used with non-tls syms. */
10039 if (r_symndx != 0
10040 && r_type != R_PPC64_NONE
10041 && (h == NULL
039b3fef
AM		 10042 || h->elf.root.type == bfd_link_hash_defined
10043 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 10044 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
10045 {
10046 if (r_type == R_PPC64_TLS && tls_mask != 0)
10047 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10048 ;
10049 else
10050 (*_bfd_error_handler)
10051 (sym_type == STT_TLS
d003868e
AM		 10052 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10053 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10054 input_bfd,
10055 input_section,
0d4792f7
AM		 10056 (long) rel->r_offset,
10057 ppc64_elf_howto_table[r_type]->name,
10058 sym_name);
411e1bfb
AM		 10059 }
10060
10061 /* Ensure reloc mapping code below stays sane. */
10062 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10063 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10064 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10065 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10066 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10067 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10068 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10069 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10070 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10071 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10072 abort ();
0d4792f7 10073
411e1bfb
AM		 10074 switch (r_type)
10075 {
10076 default:
411e1bfb
AM		 10077 break;
10078
10079 case R_PPC64_TOC16:
10080 case R_PPC64_TOC16_LO:
10081 case R_PPC64_TOC16_DS:
10082 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 10083 {
10084 /* Check for toc tls entries. */
10085 char *toc_tls;
951fd09b 10086 int retval;
411e1bfb 10087
0d4792f7
AM		 10088 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10089 rel, input_bfd);
951fd09b 10090 if (retval == 0)
411e1bfb
AM		 10091 return FALSE;
10092
10093 if (toc_tls)
10094 {
951fd09b 10095 tls_mask = *toc_tls;
411e1bfb
AM		 10096 if (r_type == R_PPC64_TOC16_DS
10097 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 10098 {
10099 if (tls_mask != 0
10100 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10101 goto toctprel;
10102 }
411e1bfb 10103 else
951fd09b
AM		 10104 {
10105 /* If we found a GD reloc pair, then we might be
10106 doing a GD->IE transition. */
10107 if (retval == 2)
10108 {
10109 tls_gd = TLS_TPRELGD;
10110 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10111 goto tls_get_addr_check;
10112 }
10113 else if (retval == 3)
10114 {
10115 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10116 goto tls_get_addr_check;
10117 }
10118 }
411e1bfb
AM		 10119 }
10120 }
10121 break;
10122
10123 case R_PPC64_GOT_TPREL16_DS:
10124 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 10125 if (tls_mask != 0
10126 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10127 {
81407a69 10128 toctprel:
4fe5ca5b 10129 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 10130 insn &= 31 << 21;
10131 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10132 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10133 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 10134 if (toc_symndx != 0)
10135 {
10136 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10137 /* We changed the symbol. Start over in order to
10138 get h, sym, sec etc. right. */
10139 rel--;
10140 continue;
10141 }
10142 else
10143 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10144 }
10145 break;
10146
10147 case R_PPC64_TLS:
951fd09b
AM		 10148 if (tls_mask != 0
10149 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10150 {
50bc7936 10151 bfd_vma rtra;
411e1bfb 10152 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10153 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 10154 == ((31 << 26) | (13 << 11)))
10155 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10156 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 10157 == ((31 << 26) | (13 << 16)))
10158 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10159 else
10160 abort ();
10161 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10162 /* add -> addi. */
10163 insn = 14 << 26;
10164 else if ((insn & (31 << 1)) == 23 << 1
10165 && ((insn & (31 << 6)) < 14 << 6
10166 || ((insn & (31 << 6)) >= 16 << 6
10167 && (insn & (31 << 6)) < 24 << 6)))
10168 /* load and store indexed -> dform. */
10169 insn = (32 | ((insn >> 6) & 31)) << 26;
10170 else if ((insn & (31 << 1)) == 21 << 1
10171 && (insn & (0x1a << 6)) == 0)
10172 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10173 insn = (((58 | ((insn >> 6) & 4)) << 26)
10174 | ((insn >> 6) & 1));
10175 else if ((insn & (31 << 1)) == 21 << 1
10176 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10177 /* lwax -> lwa. */
10178 insn = (58 << 26) | 2;
10179 else
10180 abort ();
10181 insn |= rtra;
10182 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10183 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 10184 PPC64_TPREL16_LO which is at low-order half-word. */
10185 rel->r_offset += d_offset;
0d4792f7
AM		 10186 r_type = R_PPC64_TPREL16_LO;
10187 if (toc_symndx != 0)
10188 {
10189 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10190 /* We changed the symbol. Start over in order to
10191 get h, sym, sec etc. right. */
10192 rel--;
10193 continue;
10194 }
10195 else
10196 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10197 }
10198 break;
10199
411e1bfb
AM		 10200 case R_PPC64_GOT_TLSGD16_HI:
10201 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 10202 tls_gd = TLS_TPRELGD;
10203 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10204 goto tls_gdld_hi;
10205 break;
10206
411e1bfb
AM		 10207 case R_PPC64_GOT_TLSLD16_HI:
10208 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10209 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10210 {
951fd09b
AM		 10211 tls_gdld_hi:
10212 if ((tls_mask & tls_gd) != 0)
10213 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10214 + R_PPC64_GOT_TPREL16_DS);
10215 else
411e1bfb 10216 {
951fd09b 10217 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10218 rel->r_offset -= d_offset;
951fd09b 10219 r_type = R_PPC64_NONE;
411e1bfb 10220 }
951fd09b 10221 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10222 }
10223 break;
10224
951fd09b
AM		 10225 case R_PPC64_GOT_TLSGD16:
10226 case R_PPC64_GOT_TLSGD16_LO:
10227 tls_gd = TLS_TPRELGD;
10228 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10229 goto tls_get_addr_check;
10230 break;
411e1bfb 10231
951fd09b
AM		 10232 case R_PPC64_GOT_TLSLD16:
10233 case R_PPC64_GOT_TLSLD16_LO:
10234 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10235 {
10236 tls_get_addr_check:
10237 if (rel + 1 < relend)
411e1bfb 10238 {
951fd09b
AM		 10239 enum elf_ppc64_reloc_type r_type2;
10240 unsigned long r_symndx2;
10241 struct elf_link_hash_entry *h2;
10242 bfd_vma insn1, insn2, insn3;
10243 bfd_vma offset;
10244
10245 /* The next instruction should be a call to
10246 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 10247 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 10248 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
10249 if (r_symndx2 < symtab_hdr->sh_info
10250 || (r_type2 != R_PPC64_REL14
10251 && r_type2 != R_PPC64_REL14_BRTAKEN
10252 && r_type2 != R_PPC64_REL14_BRNTAKEN
10253 && r_type2 != R_PPC64_REL24))
10254 break;
10255
10256 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
10257 while (h2->root.type == bfd_link_hash_indirect
10258 || h2->root.type == bfd_link_hash_warning)
10259 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 10260 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
10261 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 10262 break;
10263
10264 /* OK, it checks out. Replace the call. */
10265 offset = rel[1].r_offset;
10266 insn1 = bfd_get_32 (output_bfd,
4fe5ca5b 10267 contents + rel->r_offset - d_offset);
951fd09b
AM		 10268 insn3 = bfd_get_32 (output_bfd,
10269 contents + offset + 4);
10270 if ((tls_mask & tls_gd) != 0)
411e1bfb 10271 {
951fd09b
AM		 10272 /* IE */
10273 insn1 &= (1 << 26) - (1 << 2);
10274 insn1 |= 58 << 26; /* ld */
10275 insn2 = 0x7c636a14; /* add 3,3,13 */
10276 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
10277 if ((tls_mask & TLS_EXPLICIT) == 0)
10278 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10279 + R_PPC64_GOT_TPREL16_DS);
10280 else
10281 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10282 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10283 }
10284 else
951fd09b
AM		 10285 {
10286 /* LE */
10287 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10288 insn2 = 0x38630000; /* addi 3,3,0 */
10289 if (tls_gd == 0)
10290 {
10291 /* Was an LD reloc. */
10292 r_symndx = 0;
e1918d23
AM		 10293 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10294 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 10295 }
0d4792f7
AM		 10296 else if (toc_symndx != 0)
10297 r_symndx = toc_symndx;
951fd09b
AM		 10298 r_type = R_PPC64_TPREL16_HA;
10299 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10300 rel[1].r_info = ELF64_R_INFO (r_symndx,
10301 R_PPC64_TPREL16_LO);
4fe5ca5b 10302 rel[1].r_offset += d_offset;
951fd09b
AM		 10303 }
10304 if (insn3 == NOP
10305 || insn3 == CROR_151515 || insn3 == CROR_313131)
10306 {
10307 insn3 = insn2;
10308 insn2 = NOP;
10309 rel[1].r_offset += 4;
10310 }
4fe5ca5b 10311 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
951fd09b
AM		 10312 bfd_put_32 (output_bfd, insn2, contents + offset);
10313 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 10314 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 10315 {
0d4792f7
AM		 10316 /* We changed the symbol. Start over in order
10317 to get h, sym, sec etc. right. */
951fd09b
AM		 10318 rel--;
10319 continue;
10320 }
411e1bfb 10321 }
411e1bfb 10322 }
411e1bfb
AM		 10323 break;
10324
10325 case R_PPC64_DTPMOD64:
951fd09b
AM		 10326 if (rel + 1 < relend
10327 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10328 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10329 {
951fd09b
AM		 10330 if ((tls_mask & TLS_GD) == 0)
10331 {
10332 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10333 if ((tls_mask & TLS_TPRELGD) != 0)
10334 r_type = R_PPC64_TPREL64;
10335 else
10336 {
4ce794b7 10337 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 10338 r_type = R_PPC64_NONE;
10339 }
10340 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10341 }
10342 }
10343 else
10344 {
10345 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10346 {
4ce794b7 10347 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10348 r_type = R_PPC64_NONE;
951fd09b 10349 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10350 }
411e1bfb
AM		 10351 }
10352 break;
10353
10354 case R_PPC64_TPREL64:
951fd09b 10355 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 10356 {
10357 r_type = R_PPC64_NONE;
10358 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10359 }
10360 break;
10361 }
10362
10363 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10364 insn = 0;
b25116a9
AM		 10365 max_br_offset = 1 << 25;
10366 addend = rel->r_addend;
65f38f15 10367 switch (r_type)
5bd4f169
AM		 10368 {
10369 default:
65f38f15 10370 break;
5bd4f169 10371
65f38f15
AM		 10372 /* Branch taken prediction relocations. */
10373 case R_PPC64_ADDR14_BRTAKEN:
10374 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 10375 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10376 /* Fall thru. */
65f38f15 10377
86c76c7b 10378 /* Branch not taken prediction relocations. */
65f38f15
AM		 10379 case R_PPC64_ADDR14_BRNTAKEN:
10380 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 10381 insn |= bfd_get_32 (output_bfd,
10382 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10383 /* Fall thru. */
86c76c7b 10384
b25116a9
AM		 10385 case R_PPC64_REL14:
10386 max_br_offset = 1 << 15;
10387 /* Fall thru. */
5bd4f169 10388
65f38f15 10389 case R_PPC64_REL24:
ad8e1ba5
AM		 10390 /* Calls to functions with a different TOC, such as calls to
10391 shared objects, need to alter the TOC pointer. This is
10392 done using a linkage stub. A REL24 branching to these
10393 linkage stubs needs to be followed by a nop, as the nop
10394 will be replaced with an instruction to restore the TOC
10395 base pointer. */
b25116a9 10396 stub_entry = NULL;
8387904d 10397 fdh = h;
ad8e1ba5 10398 if (((h != NULL
039b3fef
AM		 10399 && (((fdh = h->oh) != NULL
10400 && fdh->elf.plt.plist != NULL)
10401 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10402 || (sec != NULL
ad8e1ba5 10403 && sec->output_section != NULL
b25116a9 10404 && sec->id <= htab->top_id
ad8e1ba5
AM		 10405 && (htab->stub_group[sec->id].toc_off
10406 != htab->stub_group[input_section->id].toc_off)))
721956f4 10407 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 10408 rel, htab)) != NULL
10409 && (stub_entry->stub_type == ppc_stub_plt_call
10410 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10411 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10412 {
b25116a9 10413 bfd_boolean can_plt_call = FALSE;
721956f4 10414
eea6121a 10415 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10416 {
b25116a9
AM		 10417 unsigned long nop;
10418 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10419 if (nop == NOP
10420 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10421 {
4ce794b7 10422 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10423 contents + rel->r_offset + 4);
b25116a9 10424 can_plt_call = TRUE;
41bd81ab 10425 }
5bd4f169 10426 }
721956f4
AM		 10427
10428 if (!can_plt_call)
10429 {
ad8e1ba5
AM		 10430 if (stub_entry->stub_type == ppc_stub_plt_call)
10431 {
10432 /* If this is a plain branch rather than a branch
4fa1c237
AM		 10433 and link, don't require a nop. However, don't
10434 allow tail calls in a shared library as they
10435 will result in r2 being corrupted. */
b25116a9
AM		 10436 unsigned long br;
10437 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10438 if (info->executable && (br & 1) == 0)
b25116a9 10439 can_plt_call = TRUE;
15b552e9
AM		 10440 else
10441 stub_entry = NULL;
ad8e1ba5 10442 }
6ab189d5 10443 else if (h != NULL
039b3fef 10444 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10445 ".__libc_start_main") == 0)
10446 {
10447 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10448 can_plt_call = TRUE;
6ab189d5 10449 }
ad8e1ba5
AM		 10450 else
10451 {
10452 if (strcmp (input_section->output_section->name,
10453 ".init") == 0
10454 || strcmp (input_section->output_section->name,
10455 ".fini") == 0)
10456 (*_bfd_error_handler)
d003868e 10457 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10458 "not supported using your crt files; "
10459 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10460 input_bfd,
10461 input_section,
ad8e1ba5
AM		 10462 (long) rel->r_offset);
10463 else
10464 (*_bfd_error_handler)
d003868e 10465 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10466 "does not allow automatic multiple TOCs; "
10467 "recompile with -mminimal-toc or "
10468 "-fno-optimize-sibling-calls, "
10469 "or make `%s' extern"),
d003868e
AM		 10470 input_bfd,
10471 input_section,
ad8e1ba5
AM		 10472 (long) rel->r_offset,
10473 sym_name,
10474 sym_name);
10475 bfd_set_error (bfd_error_bad_value);
10476 ret = FALSE;
10477 }
721956f4
AM		 10478 }
10479
b25116a9
AM		 10480 if (can_plt_call
10481 && stub_entry->stub_type == ppc_stub_plt_call)
10482 unresolved_reloc = FALSE;
10483 }
10484
8387904d
AM		 10485 if (stub_entry == NULL
10486 && get_opd_info (sec) != NULL)
10487 {
10488 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 10489 bfd_vma off = (relocation + addend
10490 - sec->output_section->vma
10491 - sec->output_offset);
8387904d
AM		 10492 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10493 if (dest != (bfd_vma) -1)
10494 {
10495 relocation = dest;
10496 addend = 0;
10497 }
10498 }
10499
b25116a9
AM		 10500 /* If the branch is out of reach we ought to have a long
10501 branch stub. */
10502 from = (rel->r_offset
10503 + input_section->output_offset
10504 + input_section->output_section->vma);
10505
10506 if (stub_entry == NULL
4cc603a5 10507 && (relocation + addend - from + max_br_offset
b25116a9
AM		 10508 >= 2 * max_br_offset)
10509 && r_type != R_PPC64_ADDR14_BRTAKEN
10510 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10511 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10512 htab);
b25116a9
AM		 10513
10514 if (stub_entry != NULL)
10515 {
10516 /* Munge up the value and addend so that we call the stub
10517 rather than the procedure directly. */
10518 relocation = (stub_entry->stub_offset
10519 + stub_entry->stub_sec->output_offset
10520 + stub_entry->stub_sec->output_section->vma);
10521 addend = 0;
10522 }
10523
10524 if (insn != 0)
10525 {
10526 if (is_power4)
721956f4 10527 {
b25116a9
AM		 10528 /* Set 'a' bit. This is 0b00010 in BO field for branch
10529 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10530 for branch on CTR insns (BO == 1a00t or 1a01t). */
10531 if ((insn & (0x14 << 21)) == (0x04 << 21))
10532 insn |= 0x02 << 21;
10533 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10534 insn |= 0x08 << 21;
10535 else
10536 break;
10537 }
10538 else
10539 {
10540 /* Invert 'y' bit if not the default. */
4cc603a5 10541 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10542 insn ^= 0x01 << 21;
721956f4 10543 }
b25116a9
AM		 10544
10545 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10546 }
e86ce104 10547
06da1e8e
AM		 10548 /* NOP out calls to undefined weak functions.
10549 We can thus call a weak function without first
10550 checking whether the function is defined. */
b25116a9 10551 else if (h != NULL
039b3fef 10552 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10553 && r_type == R_PPC64_REL24
10554 && relocation == 0
4cc603a5 10555 && addend == 0)
e86ce104 10556 {
06da1e8e
AM		 10557 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10558 continue;
e86ce104 10559 }
65f38f15
AM		 10560 break;
10561 }
5bd4f169 10562
65f38f15 10563 /* Set `addend'. */
411e1bfb 10564 tls_type = 0;
65f38f15
AM		 10565 switch (r_type)
10566 {
10567 default:
10568 (*_bfd_error_handler)
d003868e
AM		 10569 (_("%B: unknown relocation type %d for symbol %s"),
10570 input_bfd, (int) r_type, sym_name);
5bd4f169 10571
65f38f15 10572 bfd_set_error (bfd_error_bad_value);
b34976b6 10573 ret = FALSE;
65f38f15 10574 continue;
5bd4f169 10575
65f38f15 10576 case R_PPC64_NONE:
411e1bfb 10577 case R_PPC64_TLS:
04c9666a
AM		 10578 case R_PPC64_GNU_VTINHERIT:
10579 case R_PPC64_GNU_VTENTRY:
65f38f15 10580 continue;
5bd4f169
AM		 10581
10582 /* GOT16 relocations. Like an ADDR16 using the symbol's
10583 address in the GOT as relocation value instead of the
411e1bfb 10584 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10585 symbol and put the symbol value there. */
411e1bfb
AM		 10586 case R_PPC64_GOT_TLSGD16:
10587 case R_PPC64_GOT_TLSGD16_LO:
10588 case R_PPC64_GOT_TLSGD16_HI:
10589 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10590 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10591 goto dogot;
10592
10593 case R_PPC64_GOT_TLSLD16:
10594 case R_PPC64_GOT_TLSLD16_LO:
10595 case R_PPC64_GOT_TLSLD16_HI:
10596 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10597 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10598 goto dogot;
10599
10600 case R_PPC64_GOT_TPREL16_DS:
10601 case R_PPC64_GOT_TPREL16_LO_DS:
10602 case R_PPC64_GOT_TPREL16_HI:
10603 case R_PPC64_GOT_TPREL16_HA:
10604 tls_type = TLS_TLS | TLS_TPREL;
10605 goto dogot;
10606
10607 case R_PPC64_GOT_DTPREL16_DS:
10608 case R_PPC64_GOT_DTPREL16_LO_DS:
10609 case R_PPC64_GOT_DTPREL16_HI:
10610 case R_PPC64_GOT_DTPREL16_HA:
10611 tls_type = TLS_TLS | TLS_DTPREL;
10612 goto dogot;
10613
65f38f15
AM		 10614 case R_PPC64_GOT16:
10615 case R_PPC64_GOT16_LO:
10616 case R_PPC64_GOT16_HI:
10617 case R_PPC64_GOT16_HA:
10618 case R_PPC64_GOT16_DS:
10619 case R_PPC64_GOT16_LO_DS:
411e1bfb 10620 dogot:
5bd4f169
AM		 10621 {
10622 /* Relocation is to the entry for this symbol in the global
10623 offset table. */
e717da7e 10624 asection *got;
d881513a 10625 bfd_vma *offp;
5bd4f169 10626 bfd_vma off;
d881513a 10627 unsigned long indx = 0;
65f38f15 10628
d881513a
AM		 10629 if (tls_type == (TLS_TLS | TLS_LD)
10630 && (h == NULL
f5385ebf 10631 || !h->elf.def_dynamic))
e717da7e 10632 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10633 else
5bd4f169 10634 {
d881513a 10635 struct got_entry *ent;
5bd4f169 10636
d881513a
AM		 10637 if (h != NULL)
10638 {
10639 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10640 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10641 &h->elf)
d881513a 10642 || (info->shared
039b3fef 10643 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10644 /* This is actually a static link, or it is a
10645 -Bsymbolic link and the symbol is defined
10646 locally, or the symbol was forced to be local
10647 because of a version file. */
10648 ;
10649 else
10650 {
039b3fef 10651 indx = h->elf.dynindx;
d881513a
AM		 10652 unresolved_reloc = FALSE;
10653 }
039b3fef 10654 ent = h->elf.got.glist;
d881513a 10655 }
411e1bfb 10656 else
5bd4f169 10657 {
d881513a
AM		 10658 if (local_got_ents == NULL)
10659 abort ();
10660 ent = local_got_ents[r_symndx];
5bd4f169 10661 }
d881513a
AM		 10662
10663 for (; ent != NULL; ent = ent->next)
4cc603a5 10664 if (ent->addend == orig_addend
e717da7e 10665 && ent->owner == input_bfd
d881513a
AM		 10666 && ent->tls_type == tls_type)
10667 break;
10668 if (ent == NULL)
10669 abort ();
10670 offp = &ent->got.offset;
5bd4f169 10671 }
411e1bfb 10672
e717da7e
AM		 10673 got = ppc64_elf_tdata (input_bfd)->got;
10674 if (got == NULL)
10675 abort ();
10676
411e1bfb
AM		 10677 /* The offset must always be a multiple of 8. We use the
10678 least significant bit to record whether we have already
10679 processed this entry. */
d881513a 10680 off = *offp;
411e1bfb
AM		 10681 if ((off & 1) != 0)
10682 off &= ~1;
5bd4f169
AM		 10683 else
10684 {
411e1bfb
AM		 10685 /* Generate relocs for the dynamic linker, except in
10686 the case of TLSLD where we'll use one entry per
10687 module. */
e717da7e
AM		 10688 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10689
d881513a 10690 *offp = off | 1;
4e795f50
AM		 10691 if ((info->shared || indx != 0)
10692 && (h == NULL
039b3fef
AM		 10693 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10694 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10695 {
e717da7e
AM		 10696 outrel.r_offset = (got->output_section->vma
10697 + got->output_offset
411e1bfb 10698 + off);
4cc603a5 10699 outrel.r_addend = addend;
d881513a 10700 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10701 {
411e1bfb 10702 outrel.r_addend = 0;
e515b051 10703 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10704 if (tls_type == (TLS_TLS | TLS_GD))
10705 {
e717da7e
AM		 10706 loc = relgot->contents;
10707 loc += (relgot->reloc_count++
d881513a
AM		 10708 * sizeof (Elf64_External_Rela));
10709 bfd_elf64_swap_reloca_out (output_bfd,
10710 &outrel, loc);
e515b051 10711 outrel.r_offset += 8;
4cc603a5 10712 outrel.r_addend = addend;
d881513a
AM		 10713 outrel.r_info
10714 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10715 }
411e1bfb 10716 }
951fd09b 10717 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10718 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10719 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10720 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10721 else if (indx == 0)
81407a69
AM		 10722 {
10723 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10724
10725 /* Write the .got section contents for the sake
10726 of prelink. */
e717da7e 10727 loc = got->contents + off;
23fbd6fa
JJ		 10728 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10729 loc);
81407a69 10730 }
411e1bfb
AM		 10731 else
10732 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10733
10734 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10735 {
10736 outrel.r_addend += relocation;
10737 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10738 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10739 }
e717da7e
AM		 10740 loc = relgot->contents;
10741 loc += (relgot->reloc_count++
411e1bfb
AM		 10742 * sizeof (Elf64_External_Rela));
10743 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10744 }
10745
ad8e1ba5 10746 /* Init the .got section contents here if we're not
81407a69 10747 emitting a reloc. */
d881513a 10748 else
411e1bfb 10749 {
4cc603a5 10750 relocation += addend;
7b609f53
AM		 10751 if (tls_type == (TLS_TLS | TLS_LD))
10752 relocation = 1;
10753 else if (tls_type != 0)
411e1bfb 10754 {
e1918d23 10755 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10756 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10757 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10758
7b609f53
AM		 10759 if (tls_type == (TLS_TLS | TLS_GD))
10760 {
10761 bfd_put_64 (output_bfd, relocation,
e717da7e 10762 got->contents + off + 8);
7b609f53
AM		 10763 relocation = 1;
10764 }
411e1bfb 10765 }
7b609f53 10766
411e1bfb 10767 bfd_put_64 (output_bfd, relocation,
e717da7e 10768 got->contents + off);
5bd4f169
AM		 10769 }
10770 }
10771
65f38f15
AM		 10772 if (off >= (bfd_vma) -2)
10773 abort ();
10774
e717da7e 10775 relocation = got->output_offset + off;
65f38f15 10776
5bd4f169 10777 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10778 addend = -TOC_BASE_OFF;
5bd4f169 10779 }
65f38f15
AM		 10780 break;
10781
10782 case R_PPC64_PLT16_HA:
10783 case R_PPC64_PLT16_HI:
10784 case R_PPC64_PLT16_LO:
10785 case R_PPC64_PLT32:
10786 case R_PPC64_PLT64:
10787 /* Relocation is to the entry for this symbol in the
10788 procedure linkage table. */
10789
10790 /* Resolve a PLT reloc against a local symbol directly,
10791 without using the procedure linkage table. */
10792 if (h == NULL)
10793 break;
10794
411e1bfb
AM		 10795 /* It's possible that we didn't make a PLT entry for this
10796 symbol. This happens when statically linking PIC code,
10797 or when using -Bsymbolic. Go find a match if there is a
10798 PLT entry. */
4ce794b7 10799 if (htab->plt != NULL)
65f38f15 10800 {
411e1bfb 10801 struct plt_entry *ent;
039b3fef 10802 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 10803 if (ent->addend == orig_addend
411e1bfb
AM		 10804 && ent->plt.offset != (bfd_vma) -1)
10805 {
4ce794b7
AM		 10806 relocation = (htab->plt->output_section->vma
10807 + htab->plt->output_offset
411e1bfb
AM		 10808 + ent->plt.offset);
10809 unresolved_reloc = FALSE;
10810 }
65f38f15 10811 }
65f38f15 10812 break;
5bd4f169 10813
0b13192e
AM		 10814 case R_PPC64_TOC:
10815 /* Relocation value is TOC base. */
10816 relocation = TOCstart;
10817 if (r_symndx == 0)
10818 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10819 else if (unresolved_reloc)
10820 ;
10821 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10822 relocation += htab->stub_group[sec->id].toc_off;
10823 else
10824 unresolved_reloc = TRUE;
ab96bf03 10825 goto dodyn;
0b13192e 10826
5bd4f169
AM		 10827 /* TOC16 relocs. We want the offset relative to the TOC base,
10828 which is the address of the start of the TOC plus 0x8000.
10829 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10830 in this order. */
65f38f15
AM		 10831 case R_PPC64_TOC16:
10832 case R_PPC64_TOC16_LO:
10833 case R_PPC64_TOC16_HI:
10834 case R_PPC64_TOC16_DS:
10835 case R_PPC64_TOC16_LO_DS:
10836 case R_PPC64_TOC16_HA:
ad8e1ba5 10837 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10838 break;
10839
10840 /* Relocate against the beginning of the section. */
65f38f15
AM		 10841 case R_PPC64_SECTOFF:
10842 case R_PPC64_SECTOFF_LO:
10843 case R_PPC64_SECTOFF_HI:
10844 case R_PPC64_SECTOFF_DS:
10845 case R_PPC64_SECTOFF_LO_DS:
10846 case R_PPC64_SECTOFF_HA:
4ce794b7 10847 if (sec != NULL)
65f38f15 10848 addend -= sec->output_section->vma;
5bd4f169
AM		 10849 break;
10850
721956f4
AM		 10851 case R_PPC64_REL14:
10852 case R_PPC64_REL14_BRNTAKEN:
10853 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10854 case R_PPC64_REL24:
10855 break;
10856
411e1bfb
AM		 10857 case R_PPC64_TPREL16:
10858 case R_PPC64_TPREL16_LO:
10859 case R_PPC64_TPREL16_HI:
10860 case R_PPC64_TPREL16_HA:
10861 case R_PPC64_TPREL16_DS:
10862 case R_PPC64_TPREL16_LO_DS:
10863 case R_PPC64_TPREL16_HIGHER:
10864 case R_PPC64_TPREL16_HIGHERA:
10865 case R_PPC64_TPREL16_HIGHEST:
10866 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10867 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10868 if (info->shared)
10869 /* The TPREL16 relocs shouldn't really be used in shared
10870 libs as they will result in DT_TEXTREL being set, but
10871 support them anyway. */
10872 goto dodyn;
10873 break;
10874
10875 case R_PPC64_DTPREL16:
10876 case R_PPC64_DTPREL16_LO:
10877 case R_PPC64_DTPREL16_HI:
10878 case R_PPC64_DTPREL16_HA:
10879 case R_PPC64_DTPREL16_DS:
10880 case R_PPC64_DTPREL16_LO_DS:
10881 case R_PPC64_DTPREL16_HIGHER:
10882 case R_PPC64_DTPREL16_HIGHERA:
10883 case R_PPC64_DTPREL16_HIGHEST:
10884 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10885 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10886 break;
10887
e515b051
AM		 10888 case R_PPC64_DTPMOD64:
10889 relocation = 1;
10890 addend = 0;
10891 goto dodyn;
10892
411e1bfb 10893 case R_PPC64_TPREL64:
e1918d23 10894 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10895 goto dodyn;
10896
10897 case R_PPC64_DTPREL64:
e1918d23 10898 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10899 /* Fall thru */
10900
65f38f15
AM		 10901 /* Relocations that may need to be propagated if this is a
10902 dynamic object. */
04c9666a 10903 case R_PPC64_REL30:
65f38f15
AM		 10904 case R_PPC64_REL32:
10905 case R_PPC64_REL64:
10906 case R_PPC64_ADDR14:
10907 case R_PPC64_ADDR14_BRNTAKEN:
10908 case R_PPC64_ADDR14_BRTAKEN:
10909 case R_PPC64_ADDR16:
10910 case R_PPC64_ADDR16_DS:
10911 case R_PPC64_ADDR16_HA:
10912 case R_PPC64_ADDR16_HI:
10913 case R_PPC64_ADDR16_HIGHER:
10914 case R_PPC64_ADDR16_HIGHERA:
10915 case R_PPC64_ADDR16_HIGHEST:
10916 case R_PPC64_ADDR16_HIGHESTA:
10917 case R_PPC64_ADDR16_LO:
10918 case R_PPC64_ADDR16_LO_DS:
10919 case R_PPC64_ADDR24:
65f38f15
AM		 10920 case R_PPC64_ADDR32:
10921 case R_PPC64_ADDR64:
10922 case R_PPC64_UADDR16:
10923 case R_PPC64_UADDR32:
10924 case R_PPC64_UADDR64:
411e1bfb 10925 dodyn:
5d1634d7 10926 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10927 break;
10928
41bd81ab
AM		 10929 if (NO_OPD_RELOCS && is_opd)
10930 break;
10931
65f38f15 10932 if ((info->shared
4e795f50 10933 && (h == NULL
039b3fef
AM		 10934 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10935 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10936 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10937 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10938 || (ELIMINATE_COPY_RELOCS
10939 && !info->shared
65f38f15 10940 && h != NULL
039b3fef 10941 && h->elf.dynindx != -1
f5385ebf
AM		 10942 && !h->elf.non_got_ref
10943 && h->elf.def_dynamic
10944 && !h->elf.def_regular))
65f38f15
AM		 10945 {
10946 Elf_Internal_Rela outrel;
b34976b6 10947 bfd_boolean skip, relocate;
65f38f15 10948 asection *sreloc;
947216bf 10949 bfd_byte *loc;
1cf1f670 10950 bfd_vma out_off;
65f38f15
AM		 10951
10952 /* When generating a dynamic object, these relocations
10953 are copied into the output file to be resolved at run
10954 time. */
10955
b34976b6
AM		 10956 skip = FALSE;
10957 relocate = FALSE;
65f38f15 10958
1cf1f670
AM		 10959 out_off = _bfd_elf_section_offset (output_bfd, info,
10960 input_section, rel->r_offset);
10961 if (out_off == (bfd_vma) -1)
b34976b6 10962 skip = TRUE;
1cf1f670 10963 else if (out_off == (bfd_vma) -2)
b34976b6 10964 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10965 out_off += (input_section->output_section->vma
10966 + input_section->output_offset);
10967 outrel.r_offset = out_off;
411e1bfb 10968 outrel.r_addend = rel->r_addend;
65f38f15 10969
1cf1f670
AM		 10970 /* Optimize unaligned reloc use. */
10971 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10972 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10973 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10974 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10975 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10976 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10977 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10978 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10979 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10980
65f38f15 10981 if (skip)
0bb2d96a 10982 memset (&outrel, 0, sizeof outrel);
039b3fef 10983 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10984 && !is_opd
10985 && r_type != R_PPC64_TOC)
039b3fef 10986 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10987 else
10988 {
41bd81ab
AM		 10989 /* This symbol is local, or marked to become local,
10990 or this is an opd section reloc which must point
10991 at a local function. */
65f38f15 10992 outrel.r_addend += relocation;
e86ce104 10993 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10994 {
3fad3c7c 10995 if (is_opd && h != NULL)
afbe61cf
AM		 10996 {
10997 /* Lie about opd entries. This case occurs
10998 when building shared libraries and we
10999 reference a function in another shared
3fad3c7c
AM		 11000 lib. The same thing happens for a weak
11001 definition in an application that's
11002 overridden by a strong definition in a
11003 shared lib. (I believe this is a generic
11004 bug in binutils handling of weak syms.)
11005 In these cases we won't use the opd
1e2f5b6e 11006 entry in this lib. */
b34976b6 11007 unresolved_reloc = FALSE;
afbe61cf 11008 }
65f38f15 11009 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 11010
11011 /* We need to relocate .opd contents for ld.so.
11012 Prelink also wants simple and consistent rules
11013 for relocs. This make all RELATIVE relocs have
11014 *r_offset equal to r_addend. */
11015 relocate = TRUE;
65f38f15
AM		 11016 }
11017 else
11018 {
11019 long indx = 0;
11020
41bd81ab 11021 if (bfd_is_abs_section (sec))
65f38f15
AM		 11022 ;
11023 else if (sec == NULL || sec->owner == NULL)
11024 {
11025 bfd_set_error (bfd_error_bad_value);
b34976b6 11026 return FALSE;
65f38f15
AM		 11027 }
11028 else
11029 {
11030 asection *osec;
11031
11032 osec = sec->output_section;
11033 indx = elf_section_data (osec)->dynindx;
11034
74541ad4
AM		 11035 if (indx == 0)
11036 {
11037 if ((osec->flags & SEC_READONLY) == 0
11038 && htab->elf.data_index_section != NULL)
11039 osec = htab->elf.data_index_section;
11040 else
11041 osec = htab->elf.text_index_section;
11042 indx = elf_section_data (osec)->dynindx;
11043 }
11044 BFD_ASSERT (indx != 0);
11045
65f38f15
AM		 11046 /* We are turning this relocation into one
11047 against a section symbol, so subtract out
11048 the output section's address but not the
11049 offset of the input section in the output
11050 section. */
11051 outrel.r_addend -= osec->vma;
11052 }
11053
11054 outrel.r_info = ELF64_R_INFO (indx, r_type);
11055 }
11056 }
11057
11058 sreloc = elf_section_data (input_section)->sreloc;
11059 if (sreloc == NULL)
11060 abort ();
11061
dfbb6ac9
AM		 11062 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11063 >= sreloc->size)
11064 abort ();
947216bf
AM		 11065 loc = sreloc->contents;
11066 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 11067 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11068
11069 /* If this reloc is against an external symbol, it will
11070 be computed at runtime, so there's no need to do
81407a69
AM		 11071 anything now. However, for the sake of prelink ensure
11072 that the section contents are a known value. */
65f38f15 11073 if (! relocate)
81407a69
AM		 11074 {
11075 unresolved_reloc = FALSE;
11076 /* The value chosen here is quite arbitrary as ld.so
11077 ignores section contents except for the special
11078 case of .opd where the contents might be accessed
11079 before relocation. Choose zero, as that won't
11080 cause reloc overflow. */
11081 relocation = 0;
11082 addend = 0;
11083 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11084 to improve backward compatibility with older
11085 versions of ld. */
11086 if (r_type == R_PPC64_ADDR64)
11087 addend = outrel.r_addend;
11088 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11089 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 11090 addend = (input_section->output_section->vma
11091 + input_section->output_offset
11092 + rel->r_offset);
81407a69 11093 }
65f38f15 11094 }
5bd4f169
AM		 11095 break;
11096
65f38f15
AM		 11097 case R_PPC64_COPY:
11098 case R_PPC64_GLOB_DAT:
11099 case R_PPC64_JMP_SLOT:
11100 case R_PPC64_RELATIVE:
11101 /* We shouldn't ever see these dynamic relocs in relocatable
11102 files. */
ae9a127f 11103 /* Fall through. */
65f38f15
AM		 11104
11105 case R_PPC64_PLTGOT16:
11106 case R_PPC64_PLTGOT16_DS:
11107 case R_PPC64_PLTGOT16_HA:
11108 case R_PPC64_PLTGOT16_HI:
11109 case R_PPC64_PLTGOT16_LO:
11110 case R_PPC64_PLTGOT16_LO_DS:
11111 case R_PPC64_PLTREL32:
11112 case R_PPC64_PLTREL64:
11113 /* These ones haven't been implemented yet. */
11114
11115 (*_bfd_error_handler)
d003868e
AM		 11116 (_("%B: relocation %s is not supported for symbol %s."),
11117 input_bfd,
4ce794b7 11118 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 11119
11120 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11121 ret = FALSE;
5bd4f169 11122 continue;
65f38f15 11123 }
5bd4f169 11124
65f38f15
AM		 11125 /* Do any further special processing. */
11126 switch (r_type)
11127 {
11128 default:
11129 break;
11130
11131 case R_PPC64_ADDR16_HA:
11132 case R_PPC64_ADDR16_HIGHERA:
11133 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 11134 case R_PPC64_TOC16_HA:
11135 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 11136 case R_PPC64_TPREL16_HA:
11137 case R_PPC64_DTPREL16_HA:
411e1bfb
AM		 11138 case R_PPC64_TPREL16_HIGHER:
11139 case R_PPC64_TPREL16_HIGHERA:
11140 case R_PPC64_TPREL16_HIGHEST:
11141 case R_PPC64_TPREL16_HIGHESTA:
11142 case R_PPC64_DTPREL16_HIGHER:
11143 case R_PPC64_DTPREL16_HIGHERA:
11144 case R_PPC64_DTPREL16_HIGHEST:
11145 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 11146 /* It's just possible that this symbol is a weak symbol
11147 that's not actually defined anywhere. In that case,
11148 'sec' would be NULL, and we should leave the symbol
11149 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 11150 if (sec == NULL)
11151 break;
11152 /* Fall thru */
11153
11154 case R_PPC64_GOT16_HA:
11155 case R_PPC64_PLTGOT16_HA:
11156 case R_PPC64_PLT16_HA:
11157 case R_PPC64_GOT_TLSGD16_HA:
11158 case R_PPC64_GOT_TLSLD16_HA:
11159 case R_PPC64_GOT_TPREL16_HA:
11160 case R_PPC64_GOT_DTPREL16_HA:
11161 /* Add 0x10000 if sign bit in 0:15 is set.
11162 Bits 0:15 are not used. */
11163 addend += 0x8000;
65f38f15
AM		 11164 break;
11165
11166 case R_PPC64_ADDR16_DS:
11167 case R_PPC64_ADDR16_LO_DS:
11168 case R_PPC64_GOT16_DS:
11169 case R_PPC64_GOT16_LO_DS:
11170 case R_PPC64_PLT16_LO_DS:
11171 case R_PPC64_SECTOFF_DS:
11172 case R_PPC64_SECTOFF_LO_DS:
11173 case R_PPC64_TOC16_DS:
11174 case R_PPC64_TOC16_LO_DS:
11175 case R_PPC64_PLTGOT16_DS:
11176 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 11177 case R_PPC64_GOT_TPREL16_DS:
11178 case R_PPC64_GOT_TPREL16_LO_DS:
11179 case R_PPC64_GOT_DTPREL16_DS:
11180 case R_PPC64_GOT_DTPREL16_LO_DS:
11181 case R_PPC64_TPREL16_DS:
11182 case R_PPC64_TPREL16_LO_DS:
11183 case R_PPC64_DTPREL16_DS:
11184 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 11185 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11186 mask = 3;
11187 /* If this reloc is against an lq insn, then the value must be
11188 a multiple of 16. This is somewhat of a hack, but the
11189 "correct" way to do this by defining _DQ forms of all the
11190 _DS relocs bloats all reloc switches in this file. It
11191 doesn't seem to make much sense to use any of these relocs
11192 in data, so testing the insn should be safe. */
494dac0c 11193 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 11194 mask = 15;
11195 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 11196 {
11197 (*_bfd_error_handler)
d003868e
AM		 11198 (_("%B: error: relocation %s not a multiple of %d"),
11199 input_bfd,
4ce794b7 11200 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11201 mask + 1);
65f38f15 11202 bfd_set_error (bfd_error_bad_value);
b34976b6 11203 ret = FALSE;
65f38f15
AM		 11204 continue;
11205 }
11206 break;
5bd4f169
AM		 11207 }
11208
239e1f3a
AM		 11209 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11210 because such sections are not SEC_ALLOC and thus ld.so will
11211 not process them. */
65f38f15 11212 if (unresolved_reloc
239e1f3a 11213 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11214 && h->elf.def_dynamic))
9c07fe7c
AM		 11215 {
11216 (*_bfd_error_handler)
d003868e
AM		 11217 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11218 input_bfd,
11219 input_section,
9c07fe7c 11220 (long) rel->r_offset,
7b609f53 11221 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11222 h->elf.root.root.string);
b34976b6 11223 ret = FALSE;
9c07fe7c 11224 }
5bd4f169 11225
65f38f15 11226 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 11227 input_bfd,
11228 input_section,
11229 contents,
411e1bfb 11230 rel->r_offset,
5bd4f169
AM		 11231 relocation,
11232 addend);
11233
ef60b7ff 11234 if (r != bfd_reloc_ok)
5bd4f169 11235 {
cd27b276
AM		 11236 if (sym_name == NULL)
11237 sym_name = "(null)";
11238 if (r == bfd_reloc_overflow)
5bd4f169 11239 {
cd27b276
AM		 11240 if (warned)
11241 continue;
11242 if (h != NULL
039b3fef 11243 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11244 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 11245 {
11246 /* Assume this is a call protected by other code that
11247 detects the symbol is undefined. If this is the case,
11248 we can safely ignore the overflow. If not, the
11249 program is hosed anyway, and a little warning isn't
11250 going to help. */
11251
11252 continue;
11253 }
11254
ef60b7ff 11255 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 11256 (info, (h ? &h->elf.root : NULL), sym_name,
11257 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11258 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11259 return FALSE;
ef60b7ff
AM		 11260 }
11261 else
11262 {
11263 (*_bfd_error_handler)
d003868e
AM		 11264 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11265 input_bfd,
11266 input_section,
7b609f53 11267 (long) rel->r_offset,
4ce794b7 11268 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 11269 sym_name,
11270 (int) r);
b34976b6 11271 ret = FALSE;
ef60b7ff 11272 }
5bd4f169 11273 }
5bd4f169
AM		 11274 }
11275
645ea6a9
AM		 11276 /* If we're emitting relocations, then shortly after this function
11277 returns, reloc offsets and addends for this section will be
11278 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 11279 file rather than the input. Save a copy of the relocs for
11280 opd_entry_value. */
4cc603a5 11281 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 11282 {
11283 bfd_size_type amt;
11284 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11285 rel = bfd_alloc (input_bfd, amt);
11286 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11287 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11288 if (rel == NULL)
11289 return FALSE;
11290 memcpy (rel, relocs, amt);
11291 }
5bd4f169
AM		 11292 return ret;
11293}
11294
754021d0
AM		 11295/* Adjust the value of any local symbols in opd sections. */
11296
11297static bfd_boolean
11298ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11299 const char *name ATTRIBUTE_UNUSED,
11300 Elf_Internal_Sym *elfsym,
11301 asection *input_sec,
11302 struct elf_link_hash_entry *h)
11303{
4025353c 11304 long *opd_adjust, adjust;
754021d0
AM		 11305 bfd_vma value;
11306
4025353c
AM		 11307 if (h != NULL)
11308 return TRUE;
11309
11310 opd_adjust = get_opd_info (input_sec);
11311 if (opd_adjust == NULL)
754021d0
AM		 11312 return TRUE;
11313
11314 value = elfsym->st_value - input_sec->output_offset;
11315 if (!info->relocatable)
11316 value -= input_sec->output_section->vma;
11317
3f764659 11318 adjust = opd_adjust[value / 8];
4025353c
AM		 11319 if (adjust == -1)
11320 elfsym->st_value = 0;
11321 else
11322 elfsym->st_value += adjust;
754021d0
AM		 11323 return TRUE;
11324}
11325
5bd4f169
AM		 11326/* Finish up dynamic symbol handling. We set the contents of various
11327 dynamic sections here. */
11328
b34976b6 11329static bfd_boolean
4ce794b7
AM		 11330ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11331 struct bfd_link_info *info,
11332 struct elf_link_hash_entry *h,
11333 Elf_Internal_Sym *sym)
5bd4f169 11334{
65f38f15 11335 struct ppc_link_hash_table *htab;
8387904d
AM		 11336 struct plt_entry *ent;
11337 Elf_Internal_Rela rela;
11338 bfd_byte *loc;
5bd4f169 11339
65f38f15 11340 htab = ppc_hash_table (info);
5bd4f169 11341
8387904d
AM		 11342 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11343 if (ent->plt.offset != (bfd_vma) -1)
11344 {
11345 /* This symbol has an entry in the procedure linkage
11346 table. Set it up. */
11347
11348 if (htab->plt == NULL
11349 || htab->relplt == NULL
11350 || htab->glink == NULL)
11351 abort ();
11352
11353 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11354 fill in the PLT entry. */
11355 rela.r_offset = (htab->plt->output_section->vma
11356 + htab->plt->output_offset
11357 + ent->plt.offset);
11358 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11359 rela.r_addend = ent->addend;
11360
11361 loc = htab->relplt->contents;
11362 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11363 * sizeof (Elf64_External_Rela));
11364 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11365 }
5bd4f169 11366
f5385ebf 11367 if (h->needs_copy)
5bd4f169 11368 {
5bd4f169 11369 Elf_Internal_Rela rela;
947216bf 11370 bfd_byte *loc;
5bd4f169 11371
65f38f15 11372 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11373
65f38f15
AM		 11374 if (h->dynindx == -1
11375 || (h->root.type != bfd_link_hash_defined
11376 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11377 || htab->relbss == NULL)
65f38f15 11378 abort ();
5bd4f169
AM		 11379
11380 rela.r_offset = (h->root.u.def.value
11381 + h->root.u.def.section->output_section->vma
11382 + h->root.u.def.section->output_offset);
11383 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11384 rela.r_addend = 0;
4ce794b7
AM		 11385 loc = htab->relbss->contents;
11386 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11387 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 11388 }
11389
5bd4f169
AM		 11390 /* Mark some specially defined symbols as absolute. */
11391 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11392 sym->st_shndx = SHN_ABS;
11393
b34976b6 11394 return TRUE;
5bd4f169
AM		 11395}
11396
65f38f15
AM		 11397/* Used to decide how to sort relocs in an optimal manner for the
11398 dynamic linker, before writing them out. */
11399
11400static enum elf_reloc_type_class
4ce794b7 11401ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11402{
04c9666a 11403 enum elf_ppc64_reloc_type r_type;
a33d1f77 11404
4ce794b7 11405 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11406 switch (r_type)
65f38f15
AM		 11407 {
11408 case R_PPC64_RELATIVE:
11409 return reloc_class_relative;
11410 case R_PPC64_JMP_SLOT:
11411 return reloc_class_plt;
11412 case R_PPC64_COPY:
11413 return reloc_class_copy;
11414 default:
11415 return reloc_class_normal;
11416 }
11417}
11418
5bd4f169
AM		 11419/* Finish up the dynamic sections. */
11420
b34976b6 11421static bfd_boolean
4ce794b7
AM		 11422ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11423 struct bfd_link_info *info)
5bd4f169 11424{
65f38f15
AM		 11425 struct ppc_link_hash_table *htab;
11426 bfd *dynobj;
5bd4f169 11427 asection *sdyn;
5bd4f169 11428
65f38f15
AM		 11429 htab = ppc_hash_table (info);
11430 dynobj = htab->elf.dynobj;
5bd4f169
AM		 11431 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11432
65f38f15 11433 if (htab->elf.dynamic_sections_created)
5bd4f169 11434 {
5bd4f169
AM		 11435 Elf64_External_Dyn *dyncon, *dynconend;
11436
4ce794b7 11437 if (sdyn == NULL || htab->got == NULL)
65f38f15 11438 abort ();
5bd4f169
AM		 11439
11440 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11441 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11442 for (; dyncon < dynconend; dyncon++)
11443 {
11444 Elf_Internal_Dyn dyn;
19397422 11445 asection *s;
5bd4f169
AM		 11446
11447 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11448
11449 switch (dyn.d_tag)
11450 {
65f38f15
AM		 11451 default:
11452 continue;
5bd4f169 11453
5d1634d7 11454 case DT_PPC64_GLINK:
4ce794b7 11455 s = htab->glink;
6348e046 11456 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11457 /* We stupidly defined DT_PPC64_GLINK to be the start
11458 of glink rather than the first entry point, which is
11459 what ld.so needs, and now have a bigger stub to
11460 support automatic multiple TOCs. */
11461 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11462 break;
11463
19397422
AM		 11464 case DT_PPC64_OPD:
11465 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11466 if (s == NULL)
11467 continue;
11468 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11469 break;
11470
11471 case DT_PPC64_OPDSZ:
11472 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11473 if (s == NULL)
11474 continue;
eea6121a 11475 dyn.d_un.d_val = s->size;
19397422
AM		 11476 break;
11477
65f38f15 11478 case DT_PLTGOT:
4ce794b7 11479 s = htab->plt;
6348e046 11480 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11481 break;
11482
11483 case DT_JMPREL:
4ce794b7 11484 s = htab->relplt;
6348e046 11485 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11486 break;
5bd4f169 11487
65f38f15 11488 case DT_PLTRELSZ:
eea6121a 11489 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11490 break;
11491
11492 case DT_RELASZ:
11493 /* Don't count procedure linkage table relocs in the
11494 overall reloc count. */
4ce794b7 11495 s = htab->relplt;
6348e046
AM		 11496 if (s == NULL)
11497 continue;
eea6121a 11498 dyn.d_un.d_val -= s->size;
6348e046
AM		 11499 break;
11500
11501 case DT_RELA:
11502 /* We may not be using the standard ELF linker script.
11503 If .rela.plt is the first .rela section, we adjust
11504 DT_RELA to not include it. */
4ce794b7 11505 s = htab->relplt;
6348e046
AM		 11506 if (s == NULL)
11507 continue;
11508 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11509 continue;
eea6121a 11510 dyn.d_un.d_ptr += s->size;
65f38f15 11511 break;
5bd4f169 11512 }
5bd4f169 11513
65f38f15 11514 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11515 }
5bd4f169
AM		 11516 }
11517
eea6121a 11518 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11519 {
11520 /* Fill in the first entry in the global offset table.
11521 We use it to hold the link-time TOCbase. */
11522 bfd_put_64 (output_bfd,
60ee0d4a 11523 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11524 htab->got->contents);
5d1634d7
AM		 11525
11526 /* Set .got entry size. */
4ce794b7 11527 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11528 }
11529
eea6121a 11530 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11531 {
11532 /* Set .plt entry size. */
4ce794b7 11533 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11534 = PLT_ENTRY_SIZE;
11535 }
11536
84f5d08e
AM		 11537 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11538 brlt ourselves if emitrelocations. */
11539 if (htab->brlt != NULL
11540 && htab->brlt->reloc_count != 0
11541 && !_bfd_elf_link_output_relocs (output_bfd,
11542 htab->brlt,
11543 &elf_section_data (htab->brlt)->rel_hdr,
11544 elf_section_data (htab->brlt)->relocs,
11545 NULL))
11546 return FALSE;
11547
e717da7e 11548 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11549 since we didn't add them to DYNOBJ. We know dynobj is the first
11550 bfd. */
e717da7e
AM		 11551 while ((dynobj = dynobj->link_next) != NULL)
11552 {
11553 asection *s;
7b53ace3 11554
ee75fd95 11555 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11556 continue;
11557
e717da7e
AM		 11558 s = ppc64_elf_tdata (dynobj)->got;
11559 if (s != NULL
eea6121a 11560 && s->size != 0
e717da7e
AM		 11561 && s->output_section != bfd_abs_section_ptr
11562 && !bfd_set_section_contents (output_bfd, s->output_section,
11563 s->contents, s->output_offset,
eea6121a 11564 s->size))
e717da7e
AM		 11565 return FALSE;
11566 s = ppc64_elf_tdata (dynobj)->relgot;
11567 if (s != NULL
eea6121a 11568 && s->size != 0
e717da7e
AM		 11569 && s->output_section != bfd_abs_section_ptr
11570 && !bfd_set_section_contents (output_bfd, s->output_section,
11571 s->contents, s->output_offset,
eea6121a 11572 s->size))
e717da7e
AM		 11573 return FALSE;
11574 }
f6c52c13 11575
b34976b6 11576 return TRUE;
5bd4f169
AM		 11577}
11578
5bd4f169 11579#include "elf64-target.h"
GDB Binutils - Deliverables
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