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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.
3eb128b2 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169
AM		 27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
04c9666a 33#include "elf/ppc64.h"
5d1634d7 34#include "elf64-ppc.h"
5bd4f169 35
805fc799 36static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 38static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 54static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 56
ad8e1ba5
AM		 57#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58#define TARGET_LITTLE_NAME "elf64-powerpcle"
59#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60#define TARGET_BIG_NAME "elf64-powerpc"
61#define ELF_ARCH bfd_arch_powerpc
62#define ELF_MACHINE_CODE EM_PPC64
63#define ELF_MAXPAGESIZE 0x10000
64#define elf_info_to_howto ppc64_elf_info_to_howto
65
66#define elf_backend_want_got_sym 0
67#define elf_backend_want_plt_sym 0
68#define elf_backend_plt_alignment 3
69#define elf_backend_plt_not_loaded 1
ad8e1ba5 70#define elf_backend_got_header_size 8
ad8e1ba5
AM		 71#define elf_backend_can_gc_sections 1
72#define elf_backend_can_refcount 1
73#define elf_backend_rela_normal 1
74
e717da7e 75#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 76#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 81#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 82
83#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 84#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 86#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 88#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d
AM		 89#define elf_backend_check_directives ppc64_elf_check_directives
90#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5
AM		 91#define elf_backend_check_relocs ppc64_elf_check_relocs
92#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95#define elf_backend_hide_symbol ppc64_elf_hide_symbol
96#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98#define elf_backend_relocate_section ppc64_elf_relocate_section
99#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 102#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
551b43fd 103#define elf_backend_get_sec_type_attr ppc64_elf_get_sec_type_attr
ad8e1ba5 104
5bd4f169
AM		 105/* The name of the dynamic interpreter. This is put in the .interp
106 section. */
107#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
108
109/* The size in bytes of an entry in the procedure linkage table. */
110#define PLT_ENTRY_SIZE 24
111
112/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 113#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 114
115/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 116#define TOC_BASE_OFF 0x8000
117
118/* Offset of tp and dtp pointers from start of TLS block. */
119#define TP_OFFSET 0x7000
120#define DTP_OFFSET 0x8000
5bd4f169 121
ad8e1ba5
AM		 122/* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 126#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132#define BCTR 0x4e800420 /* bctr */
133
5d1634d7 134
ad8e1ba5
AM		 135#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
137
138#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
139
140/* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142#define GLINK_CALL_STUB_SIZE (16*4)
143#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
155 /* ld %r2,8(%r12) */
156 /* mtctr %r11 */
157 /* ld %r11,16(%r12) */
158 /* bctr */
5d1634d7
AM		 159
160/* Pad with this. */
161#define NOP 0x60000000
162
721956f4
AM		 163/* Some other nops. */
164#define CROR_151515 0x4def7b82
165#define CROR_313131 0x4ffffb82
166
cedb70c5 167/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 168#define LI_R0_0 0x38000000 /* li %r0,0 */
169#define B_DOT 0x48000000 /* b . */
170
171/* After that, we need two instructions to load the index, followed by
172 a branch. */
173#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 174#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 175
deb0e272
AM		 176/* Instructions used by the save and restore reg functions. */
177#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 181#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 183#define LI_R12_0 0x39800000 /* li %r12,0 */
184#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 187#define BLR 0x4e800020 /* blr */
188
41bd81ab
AM		 189/* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 192 relocate .opd without reloc entries. */
41bd81ab
AM		 193#ifndef NO_OPD_RELOCS
194#define NO_OPD_RELOCS 0
195#endif
5bd4f169 196\f
f5e87a1d 197#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 198
5bd4f169 199/* Relocation HOWTO's. */
04c9666a 200static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 201
202static reloc_howto_type ppc64_elf_howto_raw[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE, /* type */
205 0, /* rightshift */
411e1bfb
AM		 206 2, /* size (0 = byte, 1 = short, 2 = long) */
207 32, /* bitsize */
b34976b6 208 FALSE, /* pc_relative */
5bd4f169 209 0, /* bitpos */
f5e87a1d 210 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_NONE", /* name */
b34976b6 213 FALSE, /* partial_inplace */
d006db6c 214 0, /* src_mask */
5bd4f169 215 0, /* dst_mask */
b34976b6 216 FALSE), /* pcrel_offset */
5bd4f169
AM		 217
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 32, /* bitsize */
b34976b6 223 FALSE, /* pc_relative */
5bd4f169
AM		 224 0, /* bitpos */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR32", /* name */
b34976b6 228 FALSE, /* partial_inplace */
5bd4f169
AM		 229 0, /* src_mask */
230 0xffffffff, /* dst_mask */
b34976b6 231 FALSE), /* pcrel_offset */
5bd4f169
AM		 232
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24, /* type */
236 0, /* rightshift */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
238 26, /* bitsize */
b34976b6 239 FALSE, /* pc_relative */
5bd4f169
AM		 240 0, /* bitpos */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC64_ADDR24", /* name */
b34976b6 244 FALSE, /* partial_inplace */
d006db6c 245 0, /* src_mask */
f5e87a1d 246 0x03fffffc, /* dst_mask */
b34976b6 247 FALSE), /* pcrel_offset */
5bd4f169
AM		 248
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16, /* type */
251 0, /* rightshift */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
b34976b6 254 FALSE, /* pc_relative */
5bd4f169
AM		 255 0, /* bitpos */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16", /* name */
b34976b6 259 FALSE, /* partial_inplace */
5bd4f169
AM		 260 0, /* src_mask */
261 0xffff, /* dst_mask */
b34976b6 262 FALSE), /* pcrel_offset */
5bd4f169
AM		 263
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO, /* type */
266 0, /* rightshift */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
b34976b6 269 FALSE, /* pc_relative */
5bd4f169
AM		 270 0, /* bitpos */
271 complain_overflow_dont,/* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16_LO", /* name */
b34976b6 274 FALSE, /* partial_inplace */
5bd4f169
AM		 275 0, /* src_mask */
276 0xffff, /* dst_mask */
b34976b6 277 FALSE), /* pcrel_offset */
5bd4f169
AM		 278
279 /* Bits 16-31 of an address. */
280 HOWTO (R_PPC64_ADDR16_HI, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
b34976b6 284 FALSE, /* pc_relative */
5bd4f169
AM		 285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_HI", /* name */
b34976b6 289 FALSE, /* partial_inplace */
5bd4f169
AM		 290 0, /* src_mask */
291 0xffff, /* dst_mask */
b34976b6 292 FALSE), /* pcrel_offset */
5bd4f169
AM		 293
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA, /* type */
297 16, /* rightshift */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
5bd4f169
AM		 301 0, /* bitpos */
302 complain_overflow_dont, /* complain_on_overflow */
805fc799 303 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 304 "R_PPC64_ADDR16_HA", /* name */
b34976b6 305 FALSE, /* partial_inplace */
5bd4f169
AM		 306 0, /* src_mask */
307 0xffff, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
5bd4f169
AM		 309
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
b34976b6 316 FALSE, /* pc_relative */
5bd4f169
AM		 317 0, /* bitpos */
318 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 319 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 320 "R_PPC64_ADDR14", /* name */
b34976b6 321 FALSE, /* partial_inplace */
d006db6c 322 0, /* src_mask */
f5e87a1d 323 0x0000fffc, /* dst_mask */
b34976b6 324 FALSE), /* pcrel_offset */
5bd4f169
AM		 325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
b34976b6 333 FALSE, /* pc_relative */
5bd4f169
AM		 334 0, /* bitpos */
335 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 336 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 337 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 338 FALSE, /* partial_inplace */
d006db6c 339 0, /* src_mask */
f5e87a1d 340 0x0000fffc, /* dst_mask */
b34976b6 341 FALSE), /* pcrel_offset */
5bd4f169
AM		 342
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 16, /* bitsize */
b34976b6 350 FALSE, /* pc_relative */
5bd4f169
AM		 351 0, /* bitpos */
352 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 353 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 355 FALSE, /* partial_inplace */
d006db6c 356 0, /* src_mask */
f5e87a1d 357 0x0000fffc, /* dst_mask */
b34976b6 358 FALSE), /* pcrel_offset */
5bd4f169
AM		 359
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 26, /* bitsize */
b34976b6 365 TRUE, /* pc_relative */
5bd4f169
AM		 366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
2441e016 368 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 369 "R_PPC64_REL24", /* name */
b34976b6 370 FALSE, /* partial_inplace */
d006db6c 371 0, /* src_mask */
f5e87a1d 372 0x03fffffc, /* dst_mask */
b34976b6 373 TRUE), /* pcrel_offset */
5bd4f169
AM		 374
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
b34976b6 380 TRUE, /* pc_relative */
5bd4f169
AM		 381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
2441e016 383 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 384 "R_PPC64_REL14", /* name */
b34976b6 385 FALSE, /* partial_inplace */
d006db6c 386 0, /* src_mask */
f5e87a1d 387 0x0000fffc, /* dst_mask */
b34976b6 388 TRUE), /* pcrel_offset */
5bd4f169
AM		 389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
392 zero. */
393 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 TRUE, /* pc_relative */
5bd4f169
AM		 398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
805fc799 400 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 401 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 402 FALSE, /* partial_inplace */
d006db6c 403 0, /* src_mask */
f5e87a1d 404 0x0000fffc, /* dst_mask */
b34976b6 405 TRUE), /* pcrel_offset */
5bd4f169
AM		 406
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
409 be zero. */
410 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
b34976b6 414 TRUE, /* pc_relative */
5bd4f169
AM		 415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
805fc799 417 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 418 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 419 FALSE, /* partial_inplace */
d006db6c 420 0, /* src_mask */
f5e87a1d 421 0x0000fffc, /* dst_mask */
b34976b6 422 TRUE), /* pcrel_offset */
5bd4f169
AM		 423
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
425 symbol. */
426 HOWTO (R_PPC64_GOT16, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
b34976b6 430 FALSE, /* pc_relative */
5bd4f169
AM		 431 0, /* bitpos */
432 complain_overflow_signed, /* complain_on_overflow */
805fc799 433 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 434 "R_PPC64_GOT16", /* name */
b34976b6 435 FALSE, /* partial_inplace */
5bd4f169
AM		 436 0, /* src_mask */
437 0xffff, /* dst_mask */
b34976b6 438 FALSE), /* pcrel_offset */
5bd4f169
AM		 439
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC64_GOT16_LO, /* type */
443 0, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
b34976b6 446 FALSE, /* pc_relative */
5bd4f169
AM		 447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
805fc799 449 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 450 "R_PPC64_GOT16_LO", /* name */
b34976b6 451 FALSE, /* partial_inplace */
5bd4f169
AM		 452 0, /* src_mask */
453 0xffff, /* dst_mask */
b34976b6 454 FALSE), /* pcrel_offset */
5bd4f169
AM		 455
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC64_GOT16_HI, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
b34976b6 462 FALSE, /* pc_relative */
5bd4f169
AM		 463 0, /* bitpos */
464 complain_overflow_dont,/* complain_on_overflow */
805fc799 465 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 466 "R_PPC64_GOT16_HI", /* name */
b34976b6 467 FALSE, /* partial_inplace */
5bd4f169
AM		 468 0, /* src_mask */
469 0xffff, /* dst_mask */
b34976b6 470 FALSE), /* pcrel_offset */
5bd4f169
AM		 471
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
473 the symbol. */
474 HOWTO (R_PPC64_GOT16_HA, /* type */
475 16, /* rightshift */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
477 16, /* bitsize */
b34976b6 478 FALSE, /* pc_relative */
5bd4f169
AM		 479 0, /* bitpos */
480 complain_overflow_dont,/* complain_on_overflow */
805fc799 481 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 482 "R_PPC64_GOT16_HA", /* name */
b34976b6 483 FALSE, /* partial_inplace */
5bd4f169
AM		 484 0, /* src_mask */
485 0xffff, /* dst_mask */
b34976b6 486 FALSE), /* pcrel_offset */
5bd4f169
AM		 487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY, /* type */
494 0, /* rightshift */
f5e87a1d
AM		 495 0, /* this one is variable size */
496 0, /* bitsize */
b34976b6 497 FALSE, /* pc_relative */
5bd4f169 498 0, /* bitpos */
f5e87a1d
AM		 499 complain_overflow_dont, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 501 "R_PPC64_COPY", /* name */
b34976b6 502 FALSE, /* partial_inplace */
5bd4f169
AM		 503 0, /* src_mask */
504 0, /* dst_mask */
b34976b6 505 FALSE), /* pcrel_offset */
5bd4f169
AM		 506
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC64_GLOB_DAT, /* type */
510 0, /* rightshift */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
512 64, /* bitsize */
b34976b6 513 FALSE, /* pc_relative */
5bd4f169
AM		 514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
805fc799 516 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 517 "R_PPC64_GLOB_DAT", /* name */
b34976b6 518 FALSE, /* partial_inplace */
5bd4f169 519 0, /* src_mask */
f5e87a1d 520 ONES (64), /* dst_mask */
b34976b6 521 FALSE), /* pcrel_offset */
5bd4f169
AM		 522
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT, /* type */
526 0, /* rightshift */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
528 0, /* bitsize */
b34976b6 529 FALSE, /* pc_relative */
5bd4f169
AM		 530 0, /* bitpos */
531 complain_overflow_dont, /* complain_on_overflow */
805fc799 532 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 533 "R_PPC64_JMP_SLOT", /* name */
b34976b6 534 FALSE, /* partial_inplace */
5bd4f169
AM		 535 0, /* src_mask */
536 0, /* dst_mask */
b34976b6 537 FALSE), /* pcrel_offset */
5bd4f169
AM		 538
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
541 addend. */
542 HOWTO (R_PPC64_RELATIVE, /* type */
543 0, /* rightshift */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
545 64, /* bitsize */
b34976b6 546 FALSE, /* pc_relative */
5bd4f169
AM		 547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
b34976b6 551 FALSE, /* partial_inplace */
5bd4f169 552 0, /* src_mask */
f5e87a1d 553 ONES (64), /* dst_mask */
b34976b6 554 FALSE), /* pcrel_offset */
5bd4f169
AM		 555
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 32, /* bitsize */
b34976b6 561 FALSE, /* pc_relative */
5bd4f169
AM		 562 0, /* bitpos */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_UADDR32", /* name */
b34976b6 566 FALSE, /* partial_inplace */
5bd4f169
AM		 567 0, /* src_mask */
568 0xffffffff, /* dst_mask */
b34976b6 569 FALSE), /* pcrel_offset */
5bd4f169
AM		 570
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16, /* type */
573 0, /* rightshift */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
575 16, /* bitsize */
b34976b6 576 FALSE, /* pc_relative */
5bd4f169
AM		 577 0, /* bitpos */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR16", /* name */
b34976b6 581 FALSE, /* partial_inplace */
5bd4f169
AM		 582 0, /* src_mask */
583 0xffff, /* dst_mask */
b34976b6 584 FALSE), /* pcrel_offset */
5bd4f169
AM		 585
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 32, /* bitsize */
b34976b6 591 TRUE, /* pc_relative */
5bd4f169 592 0, /* bitpos */
cedb70c5 593 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 594 complain_overflow_signed, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC64_REL32", /* name */
b34976b6 597 FALSE, /* partial_inplace */
5bd4f169
AM		 598 0, /* src_mask */
599 0xffffffff, /* dst_mask */
b34976b6 600 TRUE), /* pcrel_offset */
5bd4f169 601
10ed1bba 602 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 603 HOWTO (R_PPC64_PLT32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
b34976b6 607 FALSE, /* pc_relative */
5bd4f169
AM		 608 0, /* bitpos */
609 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 610 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 611 "R_PPC64_PLT32", /* name */
b34976b6 612 FALSE, /* partial_inplace */
5bd4f169 613 0, /* src_mask */
f5e87a1d 614 0xffffffff, /* dst_mask */
b34976b6 615 FALSE), /* pcrel_offset */
5bd4f169
AM		 616
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
b34976b6 623 TRUE, /* pc_relative */
5bd4f169
AM		 624 0, /* bitpos */
625 complain_overflow_signed, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
b34976b6 628 FALSE, /* partial_inplace */
5bd4f169 629 0, /* src_mask */
f5e87a1d 630 0xffffffff, /* dst_mask */
b34976b6 631 TRUE), /* pcrel_offset */
5bd4f169
AM		 632
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
634 the symbol. */
635 HOWTO (R_PPC64_PLT16_LO, /* type */
636 0, /* rightshift */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
638 16, /* bitsize */
b34976b6 639 FALSE, /* pc_relative */
5bd4f169
AM		 640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
805fc799 642 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 643 "R_PPC64_PLT16_LO", /* name */
b34976b6 644 FALSE, /* partial_inplace */
5bd4f169
AM		 645 0, /* src_mask */
646 0xffff, /* dst_mask */
b34976b6 647 FALSE), /* pcrel_offset */
5bd4f169
AM		 648
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC64_PLT16_HI, /* type */
652 16, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
b34976b6 655 FALSE, /* pc_relative */
5bd4f169
AM		 656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
805fc799 658 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 659 "R_PPC64_PLT16_HI", /* name */
b34976b6 660 FALSE, /* partial_inplace */
5bd4f169
AM		 661 0, /* src_mask */
662 0xffff, /* dst_mask */
b34976b6 663 FALSE), /* pcrel_offset */
5bd4f169
AM		 664
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC64_PLT16_HA, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
b34976b6 671 FALSE, /* pc_relative */
5bd4f169
AM		 672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
805fc799 674 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 675 "R_PPC64_PLT16_HA", /* name */
b34976b6 676 FALSE, /* partial_inplace */
5bd4f169
AM		 677 0, /* src_mask */
678 0xffff, /* dst_mask */
b34976b6 679 FALSE), /* pcrel_offset */
5bd4f169 680
c061c2d8 681 /* 16-bit section relative relocation. */
5bd4f169
AM		 682 HOWTO (R_PPC64_SECTOFF, /* type */
683 0, /* rightshift */
c061c2d8
AM		 684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
5bd4f169
AM		 687 0, /* bitpos */
688 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 689 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 690 "R_PPC64_SECTOFF", /* name */
b34976b6 691 FALSE, /* partial_inplace */
5bd4f169 692 0, /* src_mask */
c061c2d8 693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
5bd4f169 695
c061c2d8 696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 697 HOWTO (R_PPC64_SECTOFF_LO, /* type */
698 0, /* rightshift */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
5bd4f169
AM		 702 0, /* bitpos */
703 complain_overflow_dont, /* complain_on_overflow */
805fc799 704 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 705 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 706 FALSE, /* partial_inplace */
5bd4f169
AM		 707 0, /* src_mask */
708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
5bd4f169
AM		 710
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI, /* type */
713 16, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
5bd4f169
AM		 717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
805fc799 719 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 720 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 721 FALSE, /* partial_inplace */
5bd4f169
AM		 722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
5bd4f169
AM		 725
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
5bd4f169
AM		 732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
805fc799 734 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 735 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 736 FALSE, /* partial_inplace */
5bd4f169
AM		 737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
5bd4f169 740
04c9666a
AM		 741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 743 2, /* rightshift */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
745 30, /* bitsize */
b34976b6 746 TRUE, /* pc_relative */
5bd4f169
AM		 747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
04c9666a 750 "R_PPC64_REL30", /* name */
b34976b6 751 FALSE, /* partial_inplace */
d006db6c 752 0, /* src_mask */
5bd4f169 753 0xfffffffc, /* dst_mask */
b34976b6 754 TRUE), /* pcrel_offset */
5bd4f169
AM		 755
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
757
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64, /* type */
760 0, /* rightshift */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
762 64, /* bitsize */
b34976b6 763 FALSE, /* pc_relative */
5bd4f169
AM		 764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR64", /* name */
b34976b6 768 FALSE, /* partial_inplace */
5bd4f169 769 0, /* src_mask */
f5e87a1d 770 ONES (64), /* dst_mask */
b34976b6 771 FALSE), /* pcrel_offset */
5bd4f169
AM		 772
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
775 32, /* rightshift */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
777 16, /* bitsize */
b34976b6 778 FALSE, /* pc_relative */
5bd4f169
AM		 779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 783 FALSE, /* partial_inplace */
5bd4f169
AM		 784 0, /* src_mask */
785 0xffff, /* dst_mask */
b34976b6 786 FALSE), /* pcrel_offset */
5bd4f169
AM		 787
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
791 32, /* rightshift */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
b34976b6 794 FALSE, /* pc_relative */
5bd4f169
AM		 795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
805fc799 797 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 798 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 799 FALSE, /* partial_inplace */
5bd4f169
AM		 800 0, /* src_mask */
801 0xffff, /* dst_mask */
b34976b6 802 FALSE), /* pcrel_offset */
5bd4f169
AM		 803
804 /* The bits 48-63 of an address. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
806 48, /* rightshift */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
b34976b6 809 FALSE, /* pc_relative */
5bd4f169
AM		 810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 814 FALSE, /* partial_inplace */
5bd4f169
AM		 815 0, /* src_mask */
816 0xffff, /* dst_mask */
b34976b6 817 FALSE), /* pcrel_offset */
5bd4f169
AM		 818
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
822 48, /* rightshift */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
b34976b6 825 FALSE, /* pc_relative */
5bd4f169
AM		 826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
805fc799 828 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 829 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 830 FALSE, /* partial_inplace */
5bd4f169
AM		 831 0, /* src_mask */
832 0xffff, /* dst_mask */
b34976b6 833 FALSE), /* pcrel_offset */
5bd4f169
AM		 834
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64, /* type */
837 0, /* rightshift */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
839 64, /* bitsize */
b34976b6 840 FALSE, /* pc_relative */
5bd4f169
AM		 841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_UADDR64", /* name */
b34976b6 845 FALSE, /* partial_inplace */
5bd4f169 846 0, /* src_mask */
f5e87a1d 847 ONES (64), /* dst_mask */
b34976b6 848 FALSE), /* pcrel_offset */
5bd4f169
AM		 849
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64, /* type */
852 0, /* rightshift */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 64, /* bitsize */
b34976b6 855 TRUE, /* pc_relative */
5bd4f169
AM		 856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_REL64", /* name */
b34976b6 860 FALSE, /* partial_inplace */
5bd4f169 861 0, /* src_mask */
f5e87a1d 862 ONES (64), /* dst_mask */
b34976b6 863 TRUE), /* pcrel_offset */
5bd4f169 864
cedb70c5 865 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 866 HOWTO (R_PPC64_PLT64, /* type */
867 0, /* rightshift */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
869 64, /* bitsize */
b34976b6 870 FALSE, /* pc_relative */
5bd4f169
AM		 871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
805fc799 873 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 874 "R_PPC64_PLT64", /* name */
b34976b6 875 FALSE, /* partial_inplace */
5bd4f169 876 0, /* src_mask */
f5e87a1d 877 ONES (64), /* dst_mask */
b34976b6 878 FALSE), /* pcrel_offset */
5bd4f169
AM		 879
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
881 table. */
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64, /* type */
884 0, /* rightshift */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
886 64, /* bitsize */
b34976b6 887 TRUE, /* pc_relative */
5bd4f169
AM		 888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
805fc799 890 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 891 "R_PPC64_PLTREL64", /* name */
b34976b6 892 FALSE, /* partial_inplace */
5bd4f169 893 0, /* src_mask */
f5e87a1d 894 ONES (64), /* dst_mask */
b34976b6 895 TRUE), /* pcrel_offset */
5bd4f169
AM		 896
897 /* 16 bit TOC-relative relocation. */
898
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16, /* type */
901 0, /* rightshift */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
903 16, /* bitsize */
b34976b6 904 FALSE, /* pc_relative */
5bd4f169
AM		 905 0, /* bitpos */
906 complain_overflow_signed, /* complain_on_overflow */
805fc799 907 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 908 "R_PPC64_TOC16", /* name */
b34976b6 909 FALSE, /* partial_inplace */
5bd4f169
AM		 910 0, /* src_mask */
911 0xffff, /* dst_mask */
b34976b6 912 FALSE), /* pcrel_offset */
5bd4f169
AM		 913
914 /* 16 bit TOC-relative relocation without overflow. */
915
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO, /* type */
918 0, /* rightshift */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
b34976b6 921 FALSE, /* pc_relative */
5bd4f169
AM		 922 0, /* bitpos */
923 complain_overflow_dont, /* complain_on_overflow */
805fc799 924 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 925 "R_PPC64_TOC16_LO", /* name */
b34976b6 926 FALSE, /* partial_inplace */
5bd4f169
AM		 927 0, /* src_mask */
928 0xffff, /* dst_mask */
b34976b6 929 FALSE), /* pcrel_offset */
5bd4f169
AM		 930
931 /* 16 bit TOC-relative relocation, high 16 bits. */
932
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI, /* type */
935 16, /* rightshift */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
b34976b6 938 FALSE, /* pc_relative */
5bd4f169
AM		 939 0, /* bitpos */
940 complain_overflow_dont, /* complain_on_overflow */
805fc799 941 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 942 "R_PPC64_TOC16_HI", /* name */
b34976b6 943 FALSE, /* partial_inplace */
5bd4f169
AM		 944 0, /* src_mask */
945 0xffff, /* dst_mask */
b34976b6 946 FALSE), /* pcrel_offset */
5bd4f169
AM		 947
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
950 negative. */
951
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA, /* type */
954 16, /* rightshift */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
956 16, /* bitsize */
b34976b6 957 FALSE, /* pc_relative */
5bd4f169
AM		 958 0, /* bitpos */
959 complain_overflow_dont, /* complain_on_overflow */
805fc799 960 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 961 "R_PPC64_TOC16_HA", /* name */
b34976b6 962 FALSE, /* partial_inplace */
5bd4f169
AM		 963 0, /* src_mask */
964 0xffff, /* dst_mask */
b34976b6 965 FALSE), /* pcrel_offset */
5bd4f169
AM		 966
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
968
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC, /* type */
971 0, /* rightshift */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
973 64, /* bitsize */
b34976b6 974 FALSE, /* pc_relative */
5bd4f169
AM		 975 0, /* bitpos */
976 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 977 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 978 "R_PPC64_TOC", /* name */
b34976b6 979 FALSE, /* partial_inplace */
5bd4f169 980 0, /* src_mask */
f5e87a1d 981 ONES (64), /* dst_mask */
b34976b6 982 FALSE), /* pcrel_offset */
5bd4f169
AM		 983
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16, /* type */
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
b34976b6 997 FALSE, /* pc_relative */
5bd4f169
AM		 998 0, /* bitpos */
999 complain_overflow_signed, /* complain_on_overflow */
805fc799 1000 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1010 0, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 16, /* bitsize */
1013 FALSE, /* pc_relative */
1014 0, /* bitpos */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE, /* partial_inplace */
1019 0, /* src_mask */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1022
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 16, /* bitsize */
1029 FALSE, /* pc_relative */
1030 0, /* bitpos */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE, /* partial_inplace */
1035 0, /* src_mask */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1038
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1041 is negative. */
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_DS, /* type */
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_bitfield, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_signed, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_PLT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_bitfield, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1149 0, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_DS, /* type */
1164 0, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1179 0, /* rightshift */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 16, /* bitsize */
1182 FALSE, /* pc_relative */
1183 0, /* bitpos */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1188 0, /* src_mask */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1191
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1195 0, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 16, /* bitsize */
1198 FALSE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE, /* partial_inplace */
1204 0, /* src_mask */
1205 0xfffc, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1207
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1211 0, /* rightshift */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 16, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0xfffc, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* Marker reloc for TLS. */
1225 HOWTO (R_PPC64_TLS,
1226 0, /* rightshift */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 32, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE, /* partial_inplace */
1235 0, /* src_mask */
1236 0, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64,
1242 0, /* rightshift */
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1244 64, /* bitsize */
1245 FALSE, /* pc_relative */
1246 0, /* bitpos */
1247 complain_overflow_dont, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE, /* partial_inplace */
1251 0, /* src_mask */
1252 ONES (64), /* dst_mask */
1253 FALSE), /* pcrel_offset */
1254
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64,
1259 0, /* rightshift */
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1261 64, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_dont, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 ONES (64), /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16,
1274 0, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 16, /* bitsize */
1277 FALSE, /* pc_relative */
1278 0, /* bitpos */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO,
1289 0, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1291 16, /* bitsize */
1292 FALSE, /* pc_relative */
1293 0, /* bitpos */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc, /* special_function */
1296 "R_PPC64_DTPREL16_LO", /* name */
1297 FALSE, /* partial_inplace */
1298 0, /* src_mask */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1301
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 16, /* bitsize */
1307 FALSE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL16_HI", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA,
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 16, /* bitsize */
1322 FALSE, /* pc_relative */
1323 0, /* bitpos */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16_HA", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1331
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHER", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1349 32, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHERA", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHEST", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE, /* partial_inplace */
1388 0, /* src_mask */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_DS,
1394 0, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS,
1409 0, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 16, /* bitsize */
1412 FALSE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xfffc, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1421
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64,
1425 0, /* rightshift */
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1427 64, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
1430 complain_overflow_dont, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE, /* partial_inplace */
1434 0, /* src_mask */
1435 ONES (64), /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16,
1440 0, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 16, /* bitsize */
1443 FALSE, /* pc_relative */
1444 0, /* bitpos */
1445 complain_overflow_signed, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE, /* partial_inplace */
1449 0, /* src_mask */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO,
1455 0, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 16, /* bitsize */
1458 FALSE, /* pc_relative */
1459 0, /* bitpos */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_TPREL16_LO", /* name */
1463 FALSE, /* partial_inplace */
1464 0, /* src_mask */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 16, /* bitsize */
1473 FALSE, /* pc_relative */
1474 0, /* bitpos */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL16_HI", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA,
1485 16, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 16, /* bitsize */
1488 FALSE, /* pc_relative */
1489 0, /* bitpos */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16_HA", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 16, /* bitsize */
1503 FALSE, /* pc_relative */
1504 0, /* bitpos */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_HIGHER", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA,
1515 32, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 16, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HIGHERA", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1532 16, /* bitsize */
1533 FALSE, /* pc_relative */
1534 0, /* bitpos */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HIGHEST", /* name */
1538 FALSE, /* partial_inplace */
1539 0, /* src_mask */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1542
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE, /* partial_inplace */
1554 0, /* src_mask */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_DS,
1560 0, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1562 16, /* bitsize */
1563 FALSE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_signed, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE, /* partial_inplace */
1569 0, /* src_mask */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS,
1575 0, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1577 16, /* bitsize */
1578 FALSE, /* pc_relative */
1579 0, /* bitpos */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE, /* partial_inplace */
1584 0, /* src_mask */
1585 0xfffc, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1587
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16,
1592 0, /* rightshift */
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 16, /* bitsize */
1595 FALSE, /* pc_relative */
1596 0, /* bitpos */
1597 complain_overflow_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1600 FALSE, /* partial_inplace */
5bd4f169
AM		 1601 0, /* src_mask */
1602 0xffff, /* dst_mask */
b34976b6 1603 FALSE), /* pcrel_offset */
5bd4f169 1604
411e1bfb
AM		 1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1607 0, /* rightshift */
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 16, /* bitsize */
b34976b6 1610 FALSE, /* pc_relative */
5bd4f169
AM		 1611 0, /* bitpos */
1612 complain_overflow_dont, /* complain_on_overflow */
805fc799 1613 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1614 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1615 FALSE, /* partial_inplace */
5bd4f169
AM		 1616 0, /* src_mask */
1617 0xffff, /* dst_mask */
b34976b6 1618 FALSE), /* pcrel_offset */
5bd4f169 1619
411e1bfb
AM		 1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 16, /* bitsize */
b34976b6 1625 FALSE, /* pc_relative */
5bd4f169
AM		 1626 0, /* bitpos */
1627 complain_overflow_dont, /* complain_on_overflow */
805fc799 1628 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1629 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1630 FALSE, /* partial_inplace */
5bd4f169
AM		 1631 0, /* src_mask */
1632 0xffff, /* dst_mask */
b34976b6 1633 FALSE), /* pcrel_offset */
5bd4f169 1634
411e1bfb
AM		 1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 16, /* bitsize */
b34976b6 1640 FALSE, /* pc_relative */
5bd4f169 1641 0, /* bitpos */
411e1bfb 1642 complain_overflow_dont, /* complain_on_overflow */
805fc799 1643 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1645 FALSE, /* partial_inplace */
5bd4f169
AM		 1646 0, /* src_mask */
1647 0xffff, /* dst_mask */
b34976b6 1648 FALSE), /* pcrel_offset */
5bd4f169 1649
411e1bfb
AM		 1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1654 0, /* rightshift */
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1656 16, /* bitsize */
b34976b6 1657 FALSE, /* pc_relative */
5bd4f169 1658 0, /* bitpos */
411e1bfb
AM		 1659 complain_overflow_signed, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1662 FALSE, /* partial_inplace */
d006db6c 1663 0, /* src_mask */
411e1bfb 1664 0xffff, /* dst_mask */
b34976b6 1665 FALSE), /* pcrel_offset */
5bd4f169 1666
411e1bfb
AM		 1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1669 0, /* rightshift */
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1671 16, /* bitsize */
b34976b6 1672 FALSE, /* pc_relative */
5bd4f169 1673 0, /* bitpos */
411e1bfb
AM		 1674 complain_overflow_dont, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1677 FALSE, /* partial_inplace */
d006db6c 1678 0, /* src_mask */
411e1bfb 1679 0xffff, /* dst_mask */
b34976b6 1680 FALSE), /* pcrel_offset */
5bd4f169 1681
411e1bfb
AM		 1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1684 16, /* rightshift */
5bd4f169
AM		 1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1686 16, /* bitsize */
b34976b6 1687 FALSE, /* pc_relative */
5bd4f169 1688 0, /* bitpos */
411e1bfb 1689 complain_overflow_dont, /* complain_on_overflow */
805fc799 1690 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1691 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1692 FALSE, /* partial_inplace */
d006db6c 1693 0, /* src_mask */
411e1bfb 1694 0xffff, /* dst_mask */
b34976b6 1695 FALSE), /* pcrel_offset */
5bd4f169 1696
411e1bfb
AM		 1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1699 16, /* rightshift */
5bd4f169
AM		 1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 16, /* bitsize */
b34976b6 1702 FALSE, /* pc_relative */
5bd4f169
AM		 1703 0, /* bitpos */
1704 complain_overflow_dont, /* complain_on_overflow */
805fc799 1705 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1707 FALSE, /* partial_inplace */
d006db6c 1708 0, /* src_mask */
411e1bfb 1709 0xffff, /* dst_mask */
b34976b6 1710 FALSE), /* pcrel_offset */
5bd4f169 1711
411e1bfb
AM		 1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1715 0, /* rightshift */
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 16, /* bitsize */
b34976b6 1718 FALSE, /* pc_relative */
5bd4f169 1719 0, /* bitpos */
411e1bfb 1720 complain_overflow_signed, /* complain_on_overflow */
805fc799 1721 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1723 FALSE, /* partial_inplace */
d006db6c 1724 0, /* src_mask */
5bd4f169 1725 0xfffc, /* dst_mask */
b34976b6 1726 FALSE), /* pcrel_offset */
5bd4f169 1727
411e1bfb
AM		 1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1730 0, /* rightshift */
c061c2d8
AM		 1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 16, /* bitsize */
b34976b6 1733 FALSE, /* pc_relative */
5bd4f169 1734 0, /* bitpos */
411e1bfb
AM		 1735 complain_overflow_dont, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1738 FALSE, /* partial_inplace */
d006db6c 1739 0, /* src_mask */
c061c2d8 1740 0xfffc, /* dst_mask */
b34976b6 1741 FALSE), /* pcrel_offset */
5bd4f169 1742
411e1bfb
AM		 1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1745 16, /* rightshift */
5bd4f169
AM		 1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 16, /* bitsize */
b34976b6 1748 FALSE, /* pc_relative */
5bd4f169
AM		 1749 0, /* bitpos */
1750 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1751 ppc64_elf_unhandled_reloc, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1753 FALSE, /* partial_inplace */
d006db6c 1754 0, /* src_mask */
411e1bfb 1755 0xffff, /* dst_mask */
b34976b6 1756 FALSE), /* pcrel_offset */
5bd4f169 1757
411e1bfb
AM		 1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 16, /* bitsize */
1763 FALSE, /* pc_relative */
1764 0, /* bitpos */
1765 complain_overflow_dont, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE, /* partial_inplace */
1769 0, /* src_mask */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1772
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1776 0, /* rightshift */
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 16, /* bitsize */
b34976b6 1779 FALSE, /* pc_relative */
5bd4f169
AM		 1780 0, /* bitpos */
1781 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1784 FALSE, /* partial_inplace */
d006db6c 1785 0, /* src_mask */
ad8e1ba5 1786 0xfffc, /* dst_mask */
b34976b6 1787 FALSE), /* pcrel_offset */
5bd4f169 1788
411e1bfb
AM		 1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1791 0, /* rightshift */
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 16, /* bitsize */
b34976b6 1794 FALSE, /* pc_relative */
5bd4f169
AM		 1795 0, /* bitpos */
1796 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1799 FALSE, /* partial_inplace */
d006db6c 1800 0, /* src_mask */
ad8e1ba5 1801 0xfffc, /* dst_mask */
b34976b6 1802 FALSE), /* pcrel_offset */
5bd4f169 1803
411e1bfb
AM		 1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI,
1806 16, /* rightshift */
5bd4f169
AM		 1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 16, /* bitsize */
b34976b6 1809 FALSE, /* pc_relative */
5bd4f169 1810 0, /* bitpos */
411e1bfb 1811 complain_overflow_dont, /* complain_on_overflow */
805fc799 1812 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1813 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1814 FALSE, /* partial_inplace */
d006db6c 1815 0, /* src_mask */
411e1bfb 1816 0xffff, /* dst_mask */
b34976b6 1817 FALSE), /* pcrel_offset */
5bd4f169 1818
411e1bfb
AM		 1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA,
1821 16, /* rightshift */
5bd4f169
AM		 1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 16, /* bitsize */
b34976b6 1824 FALSE, /* pc_relative */
5bd4f169
AM		 1825 0, /* bitpos */
1826 complain_overflow_dont, /* complain_on_overflow */
805fc799 1827 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1828 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1829 FALSE, /* partial_inplace */
d006db6c 1830 0, /* src_mask */
411e1bfb 1831 0xffff, /* dst_mask */
b34976b6 1832 FALSE), /* pcrel_offset */
5bd4f169
AM		 1833
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1836 0, /* rightshift */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1838 0, /* bitsize */
b34976b6 1839 FALSE, /* pc_relative */
5bd4f169
AM		 1840 0, /* bitpos */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 NULL, /* special_function */
1843 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1844 FALSE, /* partial_inplace */
5bd4f169
AM		 1845 0, /* src_mask */
1846 0, /* dst_mask */
b34976b6 1847 FALSE), /* pcrel_offset */
5bd4f169
AM		 1848
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1851 0, /* rightshift */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1853 0, /* bitsize */
b34976b6 1854 FALSE, /* pc_relative */
5bd4f169
AM		 1855 0, /* bitpos */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 NULL, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1859 FALSE, /* partial_inplace */
5bd4f169
AM		 1860 0, /* src_mask */
1861 0, /* dst_mask */
b34976b6 1862 FALSE), /* pcrel_offset */
5bd4f169
AM		 1863};
1864
1865\f
1866/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1867 be done. */
1868
1869static void
4ce794b7 1870ppc_howto_init (void)
5bd4f169
AM		 1871{
1872 unsigned int i, type;
1873
1874 for (i = 0;
1875 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1876 i++)
1877 {
1878 type = ppc64_elf_howto_raw[i].type;
1879 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1880 / sizeof (ppc64_elf_howto_table[0])));
1881 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1882 }
1883}
1884
1885static reloc_howto_type *
4ce794b7
AM		 1886ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1887 bfd_reloc_code_real_type code)
5bd4f169 1888{
411e1bfb 1889 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1890
1891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1892 /* Initialize howto table if needed. */
1893 ppc_howto_init ();
1894
4ce794b7 1895 switch (code)
5bd4f169
AM		 1896 {
1897 default:
4ce794b7 1898 return NULL;
5bd4f169 1899
411e1bfb
AM		 1900 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1901 break;
1902 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1903 break;
1904 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1905 break;
1906 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1907 break;
1908 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1909 break;
1910 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1911 break;
1912 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1913 break;
411e1bfb 1914 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1915 break;
411e1bfb 1916 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1917 break;
411e1bfb 1918 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1919 break;
411e1bfb 1920 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1921 break;
411e1bfb 1922 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1923 break;
411e1bfb 1924 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1925 break;
411e1bfb 1926 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2031 break;
411e1bfb
AM		 2032 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2033 break;
2034 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2035 break;
2036 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2037 break;
2038 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2039 break;
2040 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2041 break;
2042 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2043 break;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2045 break;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2047 break;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2049 break;
2050 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2051 break;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2053 break;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2065 break;
2066 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2067 break;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2069 break;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2071 break;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2073 break;
2074 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2075 break;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2077 break;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2079 break;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2081 break;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2083 break;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2085 break;
2086 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2087 break;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2089 break;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2091 break;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2093 break;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2095 break;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2097 break;
2098 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2099 break;
2100 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2101 break;
2102 }
2103
4ce794b7 2104 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2105};
2106
2107/* Set the howto pointer for a PowerPC ELF reloc. */
2108
2109static void
4ce794b7
AM		 2110ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2111 Elf_Internal_Rela *dst)
5bd4f169 2112{
65f38f15
AM		 2113 unsigned int type;
2114
ef60b7ff 2115 /* Initialize howto table if needed. */
5bd4f169 2116 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2117 ppc_howto_init ();
2118
65f38f15 2119 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2120 if (type >= (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])))
2122 {
2123 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2124 abfd, (int) type);
2125 type = R_PPC64_NONE;
d0fb9a8d 2126 }
65f38f15 2127 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2128}
2129
04c9666a 2130/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2131
2132static bfd_reloc_status_type
4ce794b7
AM		 2133ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2134 void *data, asection *input_section,
2135 bfd *output_bfd, char **error_message)
5bd4f169 2136{
805fc799
AM		 2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2139 link time. */
2140 if (output_bfd != NULL)
cedb70c5 2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2142 input_section, output_bfd, error_message);
2143
2144 /* Adjust the addend for sign extension of the low 16 bits.
2145 We won't actually be using the low 16 bits, so trashing them
2146 doesn't matter. */
2147 reloc_entry->addend += 0x8000;
2148 return bfd_reloc_continue;
2149}
5bd4f169 2150
2441e016
AM		 2151static bfd_reloc_status_type
2152ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2153 void *data, asection *input_section,
2154 bfd *output_bfd, char **error_message)
2155{
2156 if (output_bfd != NULL)
2157 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2158 input_section, output_bfd, error_message);
2159
699733f6
AM		 2160 if (strcmp (symbol->section->name, ".opd") == 0
2161 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2162 {
2163 bfd_vma dest = opd_entry_value (symbol->section,
2164 symbol->value + reloc_entry->addend,
2165 NULL, NULL);
2166 if (dest != (bfd_vma) -1)
2167 reloc_entry->addend = dest - (symbol->value
2168 + symbol->section->output_section->vma
2169 + symbol->section->output_offset);
2170 }
2171 return bfd_reloc_continue;
2172}
2173
805fc799 2174static bfd_reloc_status_type
4ce794b7
AM		 2175ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2176 void *data, asection *input_section,
2177 bfd *output_bfd, char **error_message)
805fc799
AM		 2178{
2179 long insn;
04c9666a 2180 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2181 bfd_size_type octets;
2182 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2183 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2184
2185 /* If this is a relocatable link (output_bfd test tells us), just
2186 call the generic function. Any adjustment will be done at final
2187 link time. */
5bd4f169 2188 if (output_bfd != NULL)
cedb70c5 2189 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2190 input_section, output_bfd, error_message);
2191
2192 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2193 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2194 insn &= ~(0x01 << 21);
4ce794b7 2195 r_type = reloc_entry->howto->type;
805fc799
AM		 2196 if (r_type == R_PPC64_ADDR14_BRTAKEN
2197 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2198 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2199
2200 if (is_power4)
5bd4f169 2201 {
805fc799
AM		 2202 /* Set 'a' bit. This is 0b00010 in BO field for branch
2203 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2204 for branch on CTR insns (BO == 1a00t or 1a01t). */
2205 if ((insn & (0x14 << 21)) == (0x04 << 21))
2206 insn |= 0x02 << 21;
2207 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2208 insn |= 0x08 << 21;
2209 else
2441e016 2210 goto out;
5bd4f169 2211 }
805fc799
AM		 2212 else
2213 {
2214 bfd_vma target = 0;
2215 bfd_vma from;
5bd4f169 2216
805fc799
AM		 2217 if (!bfd_is_com_section (symbol->section))
2218 target = symbol->value;
2219 target += symbol->section->output_section->vma;
2220 target += symbol->section->output_offset;
2221 target += reloc_entry->addend;
5bd4f169 2222
805fc799
AM		 2223 from = (reloc_entry->address
2224 + input_section->output_offset
2225 + input_section->output_section->vma);
5bd4f169 2226
805fc799
AM		 2227 /* Invert 'y' bit if not the default. */
2228 if ((bfd_signed_vma) (target - from) < 0)
2229 insn ^= 0x01 << 21;
2230 }
4ce794b7 2231 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2232 out:
2233 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2234 input_section, output_bfd, error_message);
805fc799 2235}
5bd4f169 2236
805fc799 2237static bfd_reloc_status_type
4ce794b7
AM		 2238ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2239 void *data, asection *input_section,
2240 bfd *output_bfd, char **error_message)
805fc799
AM		 2241{
2242 /* If this is a relocatable link (output_bfd test tells us), just
2243 call the generic function. Any adjustment will be done at final
2244 link time. */
2245 if (output_bfd != NULL)
cedb70c5 2246 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2247 input_section, output_bfd, error_message);
5bd4f169 2248
805fc799
AM		 2249 /* Subtract the symbol section base address. */
2250 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2251 return bfd_reloc_continue;
2252}
2253
805fc799 2254static bfd_reloc_status_type
4ce794b7
AM		 2255ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
805fc799
AM		 2258{
2259 /* If this is a relocatable link (output_bfd test tells us), just
2260 call the generic function. Any adjustment will be done at final
2261 link time. */
2262 if (output_bfd != NULL)
cedb70c5 2263 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2264 input_section, output_bfd, error_message);
2265
2266 /* Subtract the symbol section base address. */
2267 reloc_entry->addend -= symbol->section->output_section->vma;
2268
2269 /* Adjust the addend for sign extension of the low 16 bits. */
2270 reloc_entry->addend += 0x8000;
2271 return bfd_reloc_continue;
2272}
2273
2274static bfd_reloc_status_type
4ce794b7
AM		 2275ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2276 void *data, asection *input_section,
2277 bfd *output_bfd, char **error_message)
805fc799
AM		 2278{
2279 bfd_vma TOCstart;
2280
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2283 link time. */
2284 if (output_bfd != NULL)
cedb70c5 2285 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2286 input_section, output_bfd, error_message);
2287
2288 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2289 if (TOCstart == 0)
2290 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2291
2292 /* Subtract the TOC base address. */
2293 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2294 return bfd_reloc_continue;
2295}
2296
2297static bfd_reloc_status_type
4ce794b7
AM		 2298ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2299 void *data, asection *input_section,
2300 bfd *output_bfd, char **error_message)
805fc799
AM		 2301{
2302 bfd_vma TOCstart;
2303
2304 /* If this is a relocatable link (output_bfd test tells us), just
2305 call the generic function. Any adjustment will be done at final
2306 link time. */
2307 if (output_bfd != NULL)
cedb70c5 2308 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2309 input_section, output_bfd, error_message);
2310
2311 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2312 if (TOCstart == 0)
2313 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2314
2315 /* Subtract the TOC base address. */
2316 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2317
2318 /* Adjust the addend for sign extension of the low 16 bits. */
2319 reloc_entry->addend += 0x8000;
2320 return bfd_reloc_continue;
2321}
2322
2323static bfd_reloc_status_type
4ce794b7
AM		 2324ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2325 void *data, asection *input_section,
2326 bfd *output_bfd, char **error_message)
805fc799
AM		 2327{
2328 bfd_vma TOCstart;
2329 bfd_size_type octets;
2330
2331 /* If this is a relocatable link (output_bfd test tells us), just
2332 call the generic function. Any adjustment will be done at final
2333 link time. */
2334 if (output_bfd != NULL)
cedb70c5 2335 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2336 input_section, output_bfd, error_message);
2337
2338 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2339 if (TOCstart == 0)
2340 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2341
2342 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2343 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2344 return bfd_reloc_ok;
2345}
2346
2347static bfd_reloc_status_type
4ce794b7
AM		 2348ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2349 void *data, asection *input_section,
2350 bfd *output_bfd, char **error_message)
805fc799
AM		 2351{
2352 /* If this is a relocatable link (output_bfd test tells us), just
2353 call the generic function. Any adjustment will be done at final
2354 link time. */
2355 if (output_bfd != NULL)
cedb70c5 2356 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2357 input_section, output_bfd, error_message);
2358
2359 if (error_message != NULL)
2360 {
2361 static char buf[60];
2362 sprintf (buf, "generic linker can't handle %s",
2363 reloc_entry->howto->name);
2364 *error_message = buf;
2365 }
2366 return bfd_reloc_dangerous;
2367}
2368
e717da7e
AM		 2369struct ppc64_elf_obj_tdata
2370{
2371 struct elf_obj_tdata elf;
2372
2373 /* Shortcuts to dynamic linker sections. */
2374 asection *got;
2375 asection *relgot;
2376
433817dd
AM		 2377 union {
2378 /* Used during garbage collection. We attach global symbols defined
2379 on removed .opd entries to this section so that the sym is removed. */
2380 asection *deleted_section;
2381
2382 /* Used when adding symbols. */
2383 bfd_boolean has_dotsym;
2384 } u;
81688140 2385
e717da7e
AM		 2386 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2387 sections means we potentially need one of these for each input bfd. */
2388 union {
2389 bfd_signed_vma refcount;
2390 bfd_vma offset;
2391 } tlsld_got;
8860955f
AM		 2392
2393 /* A copy of relocs before they are modified for --emit-relocs. */
2394 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2395};
2396
2397#define ppc64_elf_tdata(bfd) \
2398 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2399
2400#define ppc64_tlsld_got(bfd) \
2401 (&ppc64_elf_tdata (bfd)->tlsld_got)
2402
2403/* Override the generic function because we store some extras. */
2404
2405static bfd_boolean
2406ppc64_elf_mkobject (bfd *abfd)
2407{
2408 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2409 abfd->tdata.any = bfd_zalloc (abfd, amt);
2410 if (abfd->tdata.any == NULL)
2411 return FALSE;
2412 return TRUE;
2413}
2414
ee75fd95
AM		 2415/* Return 1 if target is one of ours. */
2416
7b53ace3 2417static bfd_boolean
ee75fd95 2418is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2419{
2420 extern const bfd_target bfd_elf64_powerpc_vec;
2421 extern const bfd_target bfd_elf64_powerpcle_vec;
2422
2423 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2424}
2425
feee612b
AM		 2426/* Fix bad default arch selected for a 64 bit input bfd when the
2427 default is 32 bit. */
2428
b34976b6 2429static bfd_boolean
4ce794b7 2430ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2431{
2432 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2433 {
2434 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2435
2436 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2437 {
2438 /* Relies on arch after 32 bit default being 64 bit default. */
2439 abfd->arch_info = abfd->arch_info->next;
2440 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2441 }
2442 }
b34976b6 2443 return TRUE;
feee612b
AM		 2444}
2445
d37c89e5
AM		 2446/* Support for core dump NOTE sections. */
2447
2448static bfd_boolean
2449ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2450{
eea6121a 2451 size_t offset, size;
d37c89e5
AM		 2452
2453 if (note->descsz != 504)
2454 return FALSE;
2455
2456 /* pr_cursig */
2457 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2458
2459 /* pr_pid */
2460 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2461
2462 /* pr_reg */
2463 offset = 112;
eea6121a 2464 size = 384;
d37c89e5
AM		 2465
2466 /* Make a ".reg/999" section. */
2467 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2468 size, note->descpos + offset);
d37c89e5
AM		 2469}
2470
2471static bfd_boolean
2472ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2473{
2474 if (note->descsz != 136)
2475 return FALSE;
2476
2477 elf_tdata (abfd)->core_program
2478 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2479 elf_tdata (abfd)->core_command
2480 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2481
2482 return TRUE;
2483}
2484
5bd4f169
AM		 2485/* Merge backend specific data from an object file to the output
2486 object file when linking. */
2f6d9989 2487
b34976b6 2488static bfd_boolean
4ce794b7 2489ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2490{
5bd4f169
AM		 2491 /* Check if we have the same endianess. */
2492 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2493 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2494 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2495 {
2496 const char *msg;
2497
2498 if (bfd_big_endian (ibfd))
d003868e 2499 msg = _("%B: compiled for a big endian system "
4ce794b7 2500 "and target is little endian");
5bd4f169 2501 else
d003868e 2502 msg = _("%B: compiled for a little endian system "
4ce794b7 2503 "and target is big endian");
5bd4f169 2504
d003868e 2505 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2506
2507 bfd_set_error (bfd_error_wrong_format);
b34976b6 2508 return FALSE;
5bd4f169
AM		 2509 }
2510
b34976b6 2511 return TRUE;
5bd4f169 2512}
f0abc2a1 2513
5d35169e
AM		 2514/* Add extra PPC sections. */
2515
b35d266b 2516static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958
L		 2517{
2518 { ".plt", 4, 0, SHT_NOBITS, 0 },
7dcb9820 2519 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
551b43fd 2520 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
7dcb9820
AM		 2521 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2523 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2524 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2525};
2526
551b43fd
AM		 2527static const struct bfd_elf_special_section *
2528ppc64_elf_get_sec_type_attr (bfd *abfd, asection *sec)
7f4d3958 2529{
b35d266b 2530 const struct bfd_elf_special_section *ssect;
551b43fd
AM		 2531
2532 /* See if this is one of the special sections. */
2533 if (sec->name == NULL)
2534 return NULL;
2535
2536 ssect = _bfd_elf_get_special_section (sec->name,
2537 ppc64_elf_special_sections,
2538 sec->use_rela_p);
2539 if (ssect != NULL)
2540 return ssect;
2541
2542 return _bfd_elf_get_sec_type_attr (abfd, sec);
2543}
7f4d3958 2544
f0abc2a1
AM		 2545struct _ppc64_elf_section_data
2546{
2547 struct bfd_elf_section_data elf;
411e1bfb
AM		 2548
2549 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2550 union
2551 {
411e1bfb 2552 /* Points to the function code section for local opd entries. */
f0abc2a1 2553 asection **func_sec;
411e1bfb 2554 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2555 long *adjust;
2556 } opd;
411e1bfb
AM		 2557
2558 /* An array for toc sections, indexed by offset/8.
2559 Specifies the relocation symbol index used at a given toc offset. */
2560 unsigned *t_symndx;
f0abc2a1
AM		 2561};
2562
2563#define ppc64_elf_section_data(sec) \
411e1bfb 2564 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2565
2566static bfd_boolean
4ce794b7 2567ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2568{
2569 struct _ppc64_elf_section_data *sdata;
2570 bfd_size_type amt = sizeof (*sdata);
2571
4ce794b7 2572 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2573 if (sdata == NULL)
2574 return FALSE;
4ce794b7 2575 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2576
2577 return _bfd_elf_new_section_hook (abfd, sec);
2578}
4025353c
AM		 2579
2580static void *
2581get_opd_info (asection * sec)
2582{
2583 if (sec != NULL
2584 && ppc64_elf_section_data (sec) != NULL
2585 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2586 return ppc64_elf_section_data (sec)->opd.adjust;
2587 return NULL;
2588}
90e3cdf2
JJ		 2589\f
2590/* Parameters for the qsort hook. */
2591static asection *synthetic_opd;
2592static bfd_boolean synthetic_relocatable;
2593
699733f6 2594/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2595
2596static int
2597compare_symbols (const void *ap, const void *bp)
2598{
2599 const asymbol *a = * (const asymbol **) ap;
2600 const asymbol *b = * (const asymbol **) bp;
2601
699733f6
AM		 2602 /* Section symbols first. */
2603 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2604 return -1;
699733f6 2605 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2606 return 1;
2607
699733f6 2608 /* then .opd symbols. */
90e3cdf2
JJ		 2609 if (a->section == synthetic_opd && b->section != synthetic_opd)
2610 return -1;
2611 if (a->section != synthetic_opd && b->section == synthetic_opd)
2612 return 1;
2613
699733f6 2614 /* then other code symbols. */
90e3cdf2
JJ		 2615 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2616 == (SEC_CODE | SEC_ALLOC)
2617 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2618 != (SEC_CODE | SEC_ALLOC))
2619 return -1;
2620
2621 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2622 != (SEC_CODE | SEC_ALLOC)
2623 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2624 == (SEC_CODE | SEC_ALLOC))
2625 return 1;
2626
2627 if (synthetic_relocatable)
2628 {
2629 if (a->section->id < b->section->id)
2630 return -1;
2631
2632 if (a->section->id > b->section->id)
2633 return 1;
2634 }
2635
2636 if (a->value + a->section->vma < b->value + b->section->vma)
2637 return -1;
2638
2639 if (a->value + a->section->vma > b->value + b->section->vma)
2640 return 1;
2641
2642 return 0;
2643}
2644
699733f6 2645/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2646
699733f6
AM		 2647static asymbol *
2648sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2649{
699733f6 2650 long mid;
90e3cdf2 2651
699733f6
AM		 2652 if (id == -1)
2653 {
2654 while (lo < hi)
2655 {
2656 mid = (lo + hi) >> 1;
2657 if (syms[mid]->value + syms[mid]->section->vma < value)
2658 lo = mid + 1;
2659 else if (syms[mid]->value + syms[mid]->section->vma > value)
2660 hi = mid;
2661 else
2662 return syms[mid];
2663 }
2664 }
2665 else
2666 {
2667 while (lo < hi)
2668 {
2669 mid = (lo + hi) >> 1;
2670 if (syms[mid]->section->id < id)
2671 lo = mid + 1;
2672 else if (syms[mid]->section->id > id)
2673 hi = mid;
2674 else if (syms[mid]->value < value)
2675 lo = mid + 1;
2676 else if (syms[mid]->value > value)
2677 hi = mid;
2678 else
2679 return syms[mid];
2680 }
2681 }
2682 return NULL;
90e3cdf2
JJ		 2683}
2684
699733f6
AM		 2685/* Create synthetic symbols, effectively restoring "dot-symbol" function
2686 entry syms. */
90e3cdf2
JJ		 2687
2688static long
a7535cf3
AM		 2689ppc64_elf_get_synthetic_symtab (bfd *abfd,
2690 long static_count, asymbol **static_syms,
2691 long dyn_count, asymbol **dyn_syms,
c9727e01 2692 asymbol **ret)
90e3cdf2
JJ		 2693{
2694 asymbol *s;
699733f6
AM		 2695 long i;
2696 long count;
90e3cdf2 2697 char *names;
a7535cf3 2698 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2699 asection *opd;
90e3cdf2 2700 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2701 asymbol **syms;
90e3cdf2
JJ		 2702
2703 *ret = NULL;
2704
2705 opd = bfd_get_section_by_name (abfd, ".opd");
2706 if (opd == NULL)
2707 return 0;
2708
a7535cf3 2709 symcount = static_count;
c9727e01 2710 if (!relocatable)
a7535cf3 2711 symcount += dyn_count;
90e3cdf2 2712 if (symcount == 0)
c9727e01 2713 return 0;
90e3cdf2 2714
a7535cf3
AM		 2715 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2716 if (syms == NULL)
7356fed5 2717 return -1;
a7535cf3
AM		 2718
2719 if (!relocatable && static_count != 0 && dyn_count != 0)
2720 {
2721 /* Use both symbol tables. */
2722 memcpy (syms, static_syms, static_count * sizeof (*syms));
2723 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2724 }
2725 else if (!relocatable && static_count == 0)
2726 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2727 else
2728 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2729
90e3cdf2
JJ		 2730 synthetic_opd = opd;
2731 synthetic_relocatable = relocatable;
595da8c5 2732 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2733
c9727e01
AM		 2734 if (!relocatable && symcount > 1)
2735 {
2736 long j;
2737 /* Trim duplicate syms, since we may have merged the normal and
2738 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2739 different values, so trim any with the same value. */
c9727e01
AM		 2740 for (i = 1, j = 1; i < symcount; ++i)
2741 if (syms[i - 1]->value + syms[i - 1]->section->vma
2742 != syms[i]->value + syms[i]->section->vma)
2743 syms[j++] = syms[i];
2744 symcount = j;
2745 }
2746
699733f6
AM		 2747 i = 0;
2748 if (syms[i]->section == opd)
2749 ++i;
2750 codesecsym = i;
90e3cdf2 2751
699733f6
AM		 2752 for (; i < symcount; ++i)
2753 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2754 != (SEC_CODE | SEC_ALLOC))
2755 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2756 break;
2757 codesecsymend = i;
90e3cdf2 2758
699733f6
AM		 2759 for (; i < symcount; ++i)
2760 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2761 break;
2762 secsymend = i;
90e3cdf2 2763
699733f6
AM		 2764 for (; i < symcount; ++i)
2765 if (syms[i]->section != opd)
2766 break;
2767 opdsymend = i;
90e3cdf2 2768
699733f6
AM		 2769 for (; i < symcount; ++i)
2770 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2771 != (SEC_CODE | SEC_ALLOC))
2772 break;
2773 symcount = i;
2774
c9727e01 2775 count = 0;
699733f6 2776 if (opdsymend == secsymend)
c9727e01 2777 goto done;
90e3cdf2 2778
699733f6 2779 if (relocatable)
90e3cdf2 2780 {
699733f6
AM		 2781 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2782 arelent *r;
2783 size_t size;
2784 long relcount;
90e3cdf2 2785
699733f6 2786 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2787 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2788 if (relcount == 0)
c9727e01 2789 goto done;
90e3cdf2 2790
7356fed5
AM		 2791 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2792 {
2793 count = -1;
2794 goto done;
2795 }
2796
699733f6 2797 size = 0;
595da8c5 2798 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2799 {
2800 asymbol *sym;
90e3cdf2 2801
595da8c5 2802 while (r < opd->relocation + relcount
699733f6
AM		 2803 && r->address < syms[i]->value + opd->vma)
2804 ++r;
90e3cdf2 2805
595da8c5 2806 if (r == opd->relocation + relcount)
699733f6 2807 break;
90e3cdf2 2808
699733f6
AM		 2809 if (r->address != syms[i]->value + opd->vma)
2810 continue;
90e3cdf2 2811
699733f6
AM		 2812 if (r->howto->type != R_PPC64_ADDR64)
2813 continue;
90e3cdf2 2814
699733f6
AM		 2815 sym = *r->sym_ptr_ptr;
2816 if (!sym_exists_at (syms, opdsymend, symcount,
2817 sym->section->id, sym->value + r->addend))
2818 {
2819 ++count;
2820 size += sizeof (asymbol);
2821 size += strlen (syms[i]->name) + 2;
2822 }
2823 }
90e3cdf2 2824
699733f6
AM		 2825 s = *ret = bfd_malloc (size);
2826 if (s == NULL)
2827 {
7356fed5 2828 count = -1;
c9727e01 2829 goto done;
699733f6 2830 }
90e3cdf2 2831
699733f6 2832 names = (char *) (s + count);
90e3cdf2 2833
595da8c5 2834 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2835 {
699733f6 2836 asymbol *sym;
90e3cdf2 2837
595da8c5 2838 while (r < opd->relocation + relcount
699733f6
AM		 2839 && r->address < syms[i]->value + opd->vma)
2840 ++r;
90e3cdf2 2841
595da8c5 2842 if (r == opd->relocation + relcount)
699733f6
AM		 2843 break;
2844
2845 if (r->address != syms[i]->value + opd->vma)
2846 continue;
2847
2848 if (r->howto->type != R_PPC64_ADDR64)
2849 continue;
90e3cdf2 2850
699733f6
AM		 2851 sym = *r->sym_ptr_ptr;
2852 if (!sym_exists_at (syms, opdsymend, symcount,
2853 sym->section->id, sym->value + r->addend))
2854 {
2855 size_t len;
2856
2857 *s = *syms[i];
2858 s->section = sym->section;
2859 s->value = sym->value + r->addend;
2860 s->name = names;
2861 *names++ = '.';
2862 len = strlen (syms[i]->name);
2863 memcpy (names, syms[i]->name, len + 1);
2864 names += len + 1;
2865 s++;
2866 }
2867 }
2868 }
2869 else
90e3cdf2 2870 {
699733f6
AM		 2871 bfd_byte *contents;
2872 size_t size;
90e3cdf2 2873
699733f6
AM		 2874 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2875 {
2876 if (contents)
c9727e01
AM		 2877 {
2878 free_contents_and_exit:
2879 free (contents);
2880 }
7356fed5 2881 count = -1;
c9727e01 2882 goto done;
699733f6 2883 }
90e3cdf2 2884
699733f6
AM		 2885 size = 0;
2886 for (i = secsymend; i < opdsymend; ++i)
2887 {
2888 bfd_vma ent;
90e3cdf2 2889
699733f6
AM		 2890 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2891 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2892 {
2893 ++count;
2894 size += sizeof (asymbol);
2895 size += strlen (syms[i]->name) + 2;
2896 }
2897 }
90e3cdf2 2898
699733f6
AM		 2899 s = *ret = bfd_malloc (size);
2900 if (s == NULL)
7356fed5 2901 goto free_contents_and_exit;
90e3cdf2 2902
699733f6 2903 names = (char *) (s + count);
90e3cdf2 2904
699733f6 2905 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2906 {
699733f6 2907 bfd_vma ent;
90e3cdf2 2908
699733f6
AM		 2909 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2910 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2911 {
c9727e01 2912 long lo, hi;
699733f6 2913 size_t len;
c9727e01 2914 asection *sec = abfd->sections;
90e3cdf2 2915
699733f6
AM		 2916 *s = *syms[i];
2917 lo = codesecsym;
2918 hi = codesecsymend;
2919 while (lo < hi)
2920 {
c9727e01 2921 long mid = (lo + hi) >> 1;
699733f6
AM		 2922 if (syms[mid]->section->vma < ent)
2923 lo = mid + 1;
2924 else if (syms[mid]->section->vma > ent)
2925 hi = mid;
2926 else
c9727e01
AM		 2927 {
2928 sec = syms[mid]->section;
2929 break;
2930 }
699733f6
AM		 2931 }
2932
c9727e01 2933 if (lo >= hi && lo > codesecsym)
699733f6 2934 sec = syms[lo - 1]->section;
699733f6
AM		 2935
2936 for (; sec != NULL; sec = sec->next)
2937 {
2938 if (sec->vma > ent)
2939 break;
2940 if ((sec->flags & SEC_ALLOC) == 0
2941 || (sec->flags & SEC_LOAD) == 0)
2942 break;
2943 if ((sec->flags & SEC_CODE) != 0)
2944 s->section = sec;
2945 }
2946 s->value = ent - s->section->vma;
2947 s->name = names;
2948 *names++ = '.';
2949 len = strlen (syms[i]->name);
2950 memcpy (names, syms[i]->name, len + 1);
2951 names += len + 1;
2952 s++;
90e3cdf2 2953 }
90e3cdf2 2954 }
699733f6 2955 free (contents);
90e3cdf2
JJ		 2956 }
2957
c9727e01 2958 done:
a7535cf3 2959 free (syms);
90e3cdf2
JJ		 2960 return count;
2961}
5bd4f169 2962\f
65f38f15
AM		 2963/* The following functions are specific to the ELF linker, while
2964 functions above are used generally. Those named ppc64_elf_* are
2965 called by the main ELF linker code. They appear in this file more
2966 or less in the order in which they are called. eg.
2967 ppc64_elf_check_relocs is called early in the link process,
2968 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2969 called.
2970
2971 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2972 functions have both a function code symbol and a function descriptor
2973 symbol. A call to foo in a relocatable object file looks like:
2974
2975 . .text
2976 . x:
2977 . bl .foo
2978 . nop
2979
2980 The function definition in another object file might be:
2981
2982 . .section .opd
2983 . foo: .quad .foo
2984 . .quad .TOC.@tocbase
2985 . .quad 0
2986 .
2987 . .text
2988 . .foo: blr
2989
2990 When the linker resolves the call during a static link, the branch
2991 unsurprisingly just goes to .foo and the .opd information is unused.
2992 If the function definition is in a shared library, things are a little
2993 different: The call goes via a plt call stub, the opd information gets
2994 copied to the plt, and the linker patches the nop.
2995
2996 . x:
2997 . bl .foo_stub
2998 . ld 2,40(1)
2999 .
3000 .
3001 . .foo_stub:
3002 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3003 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3004 . std 2,40(1) # this is the general idea
3005 . ld 11,0(12)
3006 . ld 2,8(12)
3007 . mtctr 11
3008 . ld 11,16(12)
3009 . bctr
3010 .
3011 . .section .plt
3012 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3013
3014 The "reloc ()" notation is supposed to indicate that the linker emits
3015 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3016 copying.
3017
3018 What are the difficulties here? Well, firstly, the relocations
3019 examined by the linker in check_relocs are against the function code
3020 sym .foo, while the dynamic relocation in the plt is emitted against
3021 the function descriptor symbol, foo. Somewhere along the line, we need
3022 to carefully copy dynamic link information from one symbol to the other.
3023 Secondly, the generic part of the elf linker will make .foo a dynamic
3024 symbol as is normal for most other backends. We need foo dynamic
3025 instead, at least for an application final link. However, when
3026 creating a shared library containing foo, we need to have both symbols
3027 dynamic so that references to .foo are satisfied during the early
3028 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3029 definition from some other object, eg. a static library.
3030
3031 Update: As of August 2004, we support a new convention. Function
3032 calls may use the function descriptor symbol, ie. "bl foo". This
3033 behaves exactly as "bl .foo". */
65f38f15
AM		 3034
3035/* The linker needs to keep track of the number of relocs that it
3036 decides to copy as dynamic relocs in check_relocs for each symbol.
3037 This is so that it can later discard them if they are found to be
3038 unnecessary. We store the information in a field extending the
3039 regular ELF linker hash table. */
3040
3041struct ppc_dyn_relocs
3042{
3043 struct ppc_dyn_relocs *next;
3044
3045 /* The input section of the reloc. */
3046 asection *sec;
3047
3048 /* Total number of relocs copied for the input section. */
3049 bfd_size_type count;
3050
3051 /* Number of pc-relative relocs copied for the input section. */
3052 bfd_size_type pc_count;
3053};
3054
411e1bfb
AM		 3055/* Track GOT entries needed for a given symbol. We might need more
3056 than one got entry per symbol. */
3057struct got_entry
3058{
3059 struct got_entry *next;
3060
e7b938ca 3061 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3062 bfd_vma addend;
3063
e717da7e
AM		 3064 /* Unlike other ELF targets, we use separate GOT entries for the same
3065 symbol referenced from different input files. This is to support
3066 automatic multiple TOC/GOT sections, where the TOC base can vary
3067 from one input file to another.
3068
3069 Point to the BFD owning this GOT entry. */
3070 bfd *owner;
3071
3072 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3073 TLS_TPREL or TLS_DTPREL for tls entries. */
3074 char tls_type;
3075
e7b938ca 3076 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3077 union
3078 {
3079 bfd_signed_vma refcount;
3080 bfd_vma offset;
3081 } got;
411e1bfb
AM		 3082};
3083
3084/* The same for PLT. */
3085struct plt_entry
3086{
3087 struct plt_entry *next;
3088
3089 bfd_vma addend;
3090
3091 union
3092 {
3093 bfd_signed_vma refcount;
3094 bfd_vma offset;
3095 } plt;
3096};
3097
65f38f15 3098/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3099 selects those that must be copied when linking a shared library,
3100 even when the symbol is local. */
65f38f15 3101
411e1bfb 3102#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3103 ((RTYPE) != R_PPC64_REL32 \
3104 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3105 && (RTYPE) != R_PPC64_REL30)
65f38f15 3106
f4656909
AM		 3107/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3108 copying dynamic variables from a shared lib into an app's dynbss
3109 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3110 shared lib. With code that gcc generates, it's vital that this be
3111 enabled; In the PowerPC64 ABI, the address of a function is actually
3112 the address of a function descriptor, which resides in the .opd
3113 section. gcc uses the descriptor directly rather than going via the
3114 GOT as some other ABI's do, which means that initialized function
3115 pointers must reference the descriptor. Thus, a function pointer
3116 initialized to the address of a function in a shared library will
3117 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3118 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3119 presents a problem as a plt entry for that function is also
3120 initialized from the function descriptor symbol and the copy reloc
3121 may not be initialized first. */
a23b6845 3122#define ELIMINATE_COPY_RELOCS 1
f4656909 3123
721956f4
AM		 3124/* Section name for stubs is the associated section name plus this
3125 string. */
3126#define STUB_SUFFIX ".stub"
3127
3128/* Linker stubs.
3129 ppc_stub_long_branch:
3130 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3131 destination, but a 24 bit branch in a stub section will reach.
3132 . b dest
3133
3134 ppc_stub_plt_branch:
3135 Similar to the above, but a 24 bit branch in the stub section won't
3136 reach its destination.
87e226ce
AM		 3137 . addis %r12,%r2,xxx@toc@ha
3138 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3139 . mtctr %r11
3140 . bctr
3141
3142 ppc_stub_plt_call:
2c66dc6c
AM		 3143 Used to call a function in a shared library. If it so happens that
3144 the plt entry referenced crosses a 64k boundary, then an extra
3145 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3146 xxx+16 as appropriate.
87e226ce 3147 . addis %r12,%r2,xxx@toc@ha
721956f4 3148 . std %r2,40(%r1)
87e226ce
AM		 3149 . ld %r11,xxx+0@toc@l(%r12)
3150 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3151 . mtctr %r11
87e226ce 3152 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3153 . bctr
ad8e1ba5
AM		 3154
3155 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3156 code to adjust the value and save r2 to support multiple toc sections.
3157 A ppc_stub_long_branch with an r2 offset looks like:
3158 . std %r2,40(%r1)
3159 . addis %r2,%r2,off@ha
3160 . addi %r2,%r2,off@l
3161 . b dest
3162
3163 A ppc_stub_plt_branch with an r2 offset looks like:
3164 . std %r2,40(%r1)
3165 . addis %r12,%r2,xxx@toc@ha
3166 . ld %r11,xxx@toc@l(%r12)
3167 . addis %r2,%r2,off@ha
3168 . addi %r2,%r2,off@l
3169 . mtctr %r11
3170 . bctr
721956f4
AM		 3171*/
3172
3173enum ppc_stub_type {
3174 ppc_stub_none,
3175 ppc_stub_long_branch,
ad8e1ba5 3176 ppc_stub_long_branch_r2off,
721956f4 3177 ppc_stub_plt_branch,
ad8e1ba5 3178 ppc_stub_plt_branch_r2off,
721956f4
AM		 3179 ppc_stub_plt_call
3180};
3181
3182struct ppc_stub_hash_entry {
3183
3184 /* Base hash table entry structure. */
3185 struct bfd_hash_entry root;
3186
ad8e1ba5
AM		 3187 enum ppc_stub_type stub_type;
3188
721956f4
AM		 3189 /* The stub section. */
3190 asection *stub_sec;
3191
3192 /* Offset within stub_sec of the beginning of this stub. */
3193 bfd_vma stub_offset;
3194
3195 /* Given the symbol's value and its section we can determine its final
3196 value when building the stubs (so the stub knows where to jump. */
3197 bfd_vma target_value;
3198 asection *target_section;
3199
721956f4
AM		 3200 /* The symbol table entry, if any, that this was derived from. */
3201 struct ppc_link_hash_entry *h;
3202
411e1bfb
AM		 3203 /* And the reloc addend that this was derived from. */
3204 bfd_vma addend;
3205
721956f4
AM		 3206 /* Where this stub is being called from, or, in the case of combined
3207 stub sections, the first input section in the group. */
3208 asection *id_sec;
3209};
3210
3211struct ppc_branch_hash_entry {
3212
3213 /* Base hash table entry structure. */
3214 struct bfd_hash_entry root;
3215
3216 /* Offset within .branch_lt. */
3217 unsigned int offset;
3218
3219 /* Generation marker. */
3220 unsigned int iter;
3221};
65f38f15
AM		 3222
3223struct ppc_link_hash_entry
3224{
3225 struct elf_link_hash_entry elf;
3226
721956f4
AM		 3227 /* A pointer to the most recently used stub hash entry against this
3228 symbol. */
3229 struct ppc_stub_hash_entry *stub_cache;
3230
65f38f15
AM		 3231 /* Track dynamic relocs copied for this symbol. */
3232 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3233
721956f4 3234 /* Link between function code and descriptor symbols. */
34814b9f 3235 struct ppc_link_hash_entry *oh;
721956f4 3236
e86ce104
AM		 3237 /* Flag function code and descriptor symbols. */
3238 unsigned int is_func:1;
3239 unsigned int is_func_descriptor:1;
908b32fc 3240 unsigned int fake:1;
411e1bfb 3241
c5614fa4
AM		 3242 /* Whether global opd/toc sym has been adjusted or not.
3243 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3244 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3245 unsigned int adjust_done:1;
3246
99877b66
AM		 3247 /* Set if we twiddled this symbol to weak at some stage. */
3248 unsigned int was_undefined:1;
3249
411e1bfb 3250 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3251 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3252 corresponding relocs are encountered during check_relocs.
3253 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3254 indicate the corresponding GOT entry type is not needed.
3255 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3256 a TPREL one. We use a separate flag rather than setting TPREL
3257 just for convenience in distinguishing the two cases. */
3258#define TLS_GD 1 /* GD reloc. */
3259#define TLS_LD 2 /* LD reloc. */
3260#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3261#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3262#define TLS_TLS 16 /* Any TLS reloc. */
3263#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3264#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3265 char tls_mask;
65f38f15
AM		 3266};
3267
3268/* ppc64 ELF linker hash table. */
3269
3270struct ppc_link_hash_table
3271{
3272 struct elf_link_hash_table elf;
3273
721956f4
AM		 3274 /* The stub hash table. */
3275 struct bfd_hash_table stub_hash_table;
3276
3277 /* Another hash table for plt_branch stubs. */
3278 struct bfd_hash_table branch_hash_table;
3279
3280 /* Linker stub bfd. */
3281 bfd *stub_bfd;
3282
3283 /* Linker call-backs. */
4ce794b7
AM		 3284 asection * (*add_stub_section) (const char *, asection *);
3285 void (*layout_sections_again) (void);
721956f4
AM		 3286
3287 /* Array to keep track of which stub sections have been created, and
3288 information on stub grouping. */
3289 struct map_stub {
3290 /* This is the section to which stubs in the group will be attached. */
3291 asection *link_sec;
3292 /* The stub section. */
3293 asection *stub_sec;
ad8e1ba5
AM		 3294 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3295 bfd_vma toc_off;
721956f4
AM		 3296 } *stub_group;
3297
ad8e1ba5
AM		 3298 /* Temp used when calculating TOC pointers. */
3299 bfd_vma toc_curr;
3300
8f3bab57
AM		 3301 /* Highest input section id. */
3302 int top_id;
3303
734b6cf9
AM		 3304 /* Highest output section index. */
3305 int top_index;
3306
3307 /* List of input sections for each output section. */
3308 asection **input_list;
721956f4 3309
65f38f15 3310 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3311 asection *got;
4ce794b7
AM		 3312 asection *plt;
3313 asection *relplt;
3314 asection *dynbss;
3315 asection *relbss;
3316 asection *glink;
82bd7b59 3317 asection *sfpr;
4ce794b7
AM		 3318 asection *brlt;
3319 asection *relbrlt;
ec338859 3320
8387904d
AM		 3321 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3322 struct ppc_link_hash_entry *tls_get_addr;
3323 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3324
9b5ecbd0
AM		 3325 /* Statistics. */
3326 unsigned long stub_count[ppc_stub_plt_call];
3327
ee75fd95
AM		 3328 /* Number of stubs against global syms. */
3329 unsigned long stub_globals;
3330
ad8e1ba5 3331 /* Set if we should emit symbols for stubs. */
99877b66 3332 unsigned int emit_stub_syms:1;
ad8e1ba5 3333
4c52953f
AM		 3334 /* Support for multiple toc sections. */
3335 unsigned int no_multi_toc:1;
3336 unsigned int multi_toc_needed:1;
3337
5d1634d7 3338 /* Set on error. */
99877b66 3339 unsigned int stub_error:1;
721956f4
AM		 3340
3341 /* Flag set when small branches are detected. Used to
3342 select suitable defaults for the stub group size. */
99877b66
AM		 3343 unsigned int has_14bit_branch:1;
3344
3345 /* Temp used by ppc64_elf_check_directives. */
3346 unsigned int twiddled_syms:1;
721956f4
AM		 3347
3348 /* Incremented every time we size stubs. */
3349 unsigned int stub_iteration;
5d1634d7 3350
ec338859
AM		 3351 /* Small local sym to section mapping cache. */
3352 struct sym_sec_cache sym_sec;
65f38f15
AM		 3353};
3354
4c52953f
AM		 3355/* Rename some of the generic section flags to better document how they
3356 are used here. */
3357#define has_toc_reloc has_gp_reloc
3358#define makes_toc_func_call need_finalize_relax
3359#define call_check_in_progress reloc_done
3360
65f38f15
AM		 3361/* Get the ppc64 ELF linker hash table from a link_info structure. */
3362
3363#define ppc_hash_table(p) \
3364 ((struct ppc_link_hash_table *) ((p)->hash))
3365
721956f4
AM		 3366#define ppc_stub_hash_lookup(table, string, create, copy) \
3367 ((struct ppc_stub_hash_entry *) \
3368 bfd_hash_lookup ((table), (string), (create), (copy)))
3369
3370#define ppc_branch_hash_lookup(table, string, create, copy) \
3371 ((struct ppc_branch_hash_entry *) \
3372 bfd_hash_lookup ((table), (string), (create), (copy)))
3373
3374/* Create an entry in the stub hash table. */
3375
3376static struct bfd_hash_entry *
4ce794b7
AM		 3377stub_hash_newfunc (struct bfd_hash_entry *entry,
3378 struct bfd_hash_table *table,
3379 const char *string)
721956f4
AM		 3380{
3381 /* Allocate the structure if it has not already been allocated by a
3382 subclass. */
3383 if (entry == NULL)
3384 {
3385 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3386 if (entry == NULL)
3387 return entry;
3388 }
3389
3390 /* Call the allocation method of the superclass. */
3391 entry = bfd_hash_newfunc (entry, table, string);
3392 if (entry != NULL)
3393 {
3394 struct ppc_stub_hash_entry *eh;
3395
3396 /* Initialize the local fields. */
3397 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3398 eh->stub_type = ppc_stub_none;
721956f4
AM		 3399 eh->stub_sec = NULL;
3400 eh->stub_offset = 0;
3401 eh->target_value = 0;
3402 eh->target_section = NULL;
721956f4
AM		 3403 eh->h = NULL;
3404 eh->id_sec = NULL;
3405 }
3406
3407 return entry;
3408}
3409
3410/* Create an entry in the branch hash table. */
3411
3412static struct bfd_hash_entry *
4ce794b7
AM		 3413branch_hash_newfunc (struct bfd_hash_entry *entry,
3414 struct bfd_hash_table *table,
3415 const char *string)
721956f4
AM		 3416{
3417 /* Allocate the structure if it has not already been allocated by a
3418 subclass. */
3419 if (entry == NULL)
3420 {
3421 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3422 if (entry == NULL)
3423 return entry;
3424 }
3425
3426 /* Call the allocation method of the superclass. */
3427 entry = bfd_hash_newfunc (entry, table, string);
3428 if (entry != NULL)
3429 {
3430 struct ppc_branch_hash_entry *eh;
3431
3432 /* Initialize the local fields. */
3433 eh = (struct ppc_branch_hash_entry *) entry;
3434 eh->offset = 0;
3435 eh->iter = 0;
3436 }
3437
3438 return entry;
3439}
3440
65f38f15
AM		 3441/* Create an entry in a ppc64 ELF linker hash table. */
3442
3443static struct bfd_hash_entry *
4ce794b7
AM		 3444link_hash_newfunc (struct bfd_hash_entry *entry,
3445 struct bfd_hash_table *table,
3446 const char *string)
65f38f15
AM		 3447{
3448 /* Allocate the structure if it has not already been allocated by a
3449 subclass. */
3450 if (entry == NULL)
3451 {
3452 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3453 if (entry == NULL)
3454 return entry;
3455 }
3456
3457 /* Call the allocation method of the superclass. */
3458 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3459 if (entry != NULL)
3460 {
3461 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3462
908b32fc
AM		 3463 memset (&eh->stub_cache, 0,
3464 (sizeof (struct ppc_link_hash_entry)
3465 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3466 }
3467
3468 return entry;
3469}
3470
3471/* Create a ppc64 ELF linker hash table. */
3472
3473static struct bfd_link_hash_table *
4ce794b7 3474ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3475{
3476 struct ppc_link_hash_table *htab;
3477 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3478
4ce794b7 3479 htab = bfd_zmalloc (amt);
65f38f15
AM		 3480 if (htab == NULL)
3481 return NULL;
3482
3483 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3484 {
e2d34d7d 3485 free (htab);
65f38f15
AM		 3486 return NULL;
3487 }
3488
721956f4
AM		 3489 /* Init the stub hash table too. */
3490 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3491 return NULL;
3492
3493 /* And the branch hash table. */
3494 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3495 return NULL;
3496
3254fd24
AM		 3497 /* Initializing two fields of the union is just cosmetic. We really
3498 only care about glist, but when compiled on a 32-bit host the
3499 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3500 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3501 htab->elf.init_got_refcount.refcount = 0;
3502 htab->elf.init_got_refcount.glist = NULL;
3503 htab->elf.init_plt_refcount.refcount = 0;
3504 htab->elf.init_plt_refcount.glist = NULL;
3505 htab->elf.init_got_offset.offset = 0;
3506 htab->elf.init_got_offset.glist = NULL;
3507 htab->elf.init_plt_offset.offset = 0;
3508 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3509
65f38f15
AM		 3510 return &htab->elf.root;
3511}
3512
721956f4
AM		 3513/* Free the derived linker hash table. */
3514
3515static void
4ce794b7 3516ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3517{
3518 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3519
3520 bfd_hash_table_free (&ret->stub_hash_table);
3521 bfd_hash_table_free (&ret->branch_hash_table);
3522 _bfd_generic_link_hash_table_free (hash);
3523}
3524
e717da7e
AM		 3525/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3526
3527void
3528ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3529{
3530 struct ppc_link_hash_table *htab;
3531
3532 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3533
3534/* Always hook our dynamic sections into the first bfd, which is the
3535 linker created stub bfd. This ensures that the GOT header is at
3536 the start of the output TOC section. */
3537 htab = ppc_hash_table (info);
3538 htab->stub_bfd = abfd;
3539 htab->elf.dynobj = abfd;
3540}
3541
721956f4
AM		 3542/* Build a name for an entry in the stub hash table. */
3543
3544static char *
4ce794b7
AM		 3545ppc_stub_name (const asection *input_section,
3546 const asection *sym_sec,
3547 const struct ppc_link_hash_entry *h,
3548 const Elf_Internal_Rela *rel)
721956f4
AM		 3549{
3550 char *stub_name;
3551 bfd_size_type len;
3552
3553 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3554 offsets from a sym as a branch target? In fact, we could
3555 probably assume the addend is always zero. */
3556 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3557
3558 if (h)
3559 {
3560 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3561 stub_name = bfd_malloc (len);
46de2a7c
AM		 3562 if (stub_name == NULL)
3563 return stub_name;
3564
3565 sprintf (stub_name, "%08x.%s+%x",
3566 input_section->id & 0xffffffff,
3567 h->elf.root.root.string,
3568 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3569 }
3570 else
3571 {
ad8e1ba5 3572 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3573 stub_name = bfd_malloc (len);
46de2a7c
AM		 3574 if (stub_name == NULL)
3575 return stub_name;
3576
3577 sprintf (stub_name, "%08x.%x:%x+%x",
3578 input_section->id & 0xffffffff,
3579 sym_sec->id & 0xffffffff,
3580 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3581 (int) rel->r_addend & 0xffffffff);
721956f4 3582 }
ee75fd95
AM		 3583 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3584 stub_name[len - 2] = 0;
721956f4
AM		 3585 return stub_name;
3586}
3587
3588/* Look up an entry in the stub hash. Stub entries are cached because
3589 creating the stub name takes a bit of time. */
3590
3591static struct ppc_stub_hash_entry *
4ce794b7
AM		 3592ppc_get_stub_entry (const asection *input_section,
3593 const asection *sym_sec,
039b3fef 3594 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3595 const Elf_Internal_Rela *rel,
3596 struct ppc_link_hash_table *htab)
721956f4
AM		 3597{
3598 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3599 const asection *id_sec;
3600
3601 /* If this input section is part of a group of sections sharing one
3602 stub section, then use the id of the first section in the group.
3603 Stub names need to include a section id, as there may well be
3604 more than one stub used to reach say, printf, and we need to
3605 distinguish between them. */
3606 id_sec = htab->stub_group[input_section->id].link_sec;
3607
3608 if (h != NULL && h->stub_cache != NULL
3609 && h->stub_cache->h == h
3610 && h->stub_cache->id_sec == id_sec)
3611 {
3612 stub_entry = h->stub_cache;
3613 }
3614 else
3615 {
3616 char *stub_name;
3617
3618 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3619 if (stub_name == NULL)
3620 return NULL;
3621
3622 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3623 stub_name, FALSE, FALSE);
721956f4
AM		 3624 if (h != NULL)
3625 h->stub_cache = stub_entry;
3626
3627 free (stub_name);
3628 }
3629
3630 return stub_entry;
3631}
3632
3633/* Add a new stub entry to the stub hash. Not all fields of the new
3634 stub entry are initialised. */
3635
3636static struct ppc_stub_hash_entry *
4ce794b7
AM		 3637ppc_add_stub (const char *stub_name,
3638 asection *section,
3639 struct ppc_link_hash_table *htab)
721956f4
AM		 3640{
3641 asection *link_sec;
3642 asection *stub_sec;
3643 struct ppc_stub_hash_entry *stub_entry;
3644
3645 link_sec = htab->stub_group[section->id].link_sec;
3646 stub_sec = htab->stub_group[section->id].stub_sec;
3647 if (stub_sec == NULL)
3648 {
3649 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3650 if (stub_sec == NULL)
3651 {
d4c88bbb 3652 size_t namelen;
721956f4
AM		 3653 bfd_size_type len;
3654 char *s_name;
3655
d4c88bbb
AM		 3656 namelen = strlen (link_sec->name);
3657 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3658 s_name = bfd_alloc (htab->stub_bfd, len);
3659 if (s_name == NULL)
3660 return NULL;
3661
d4c88bbb
AM		 3662 memcpy (s_name, link_sec->name, namelen);
3663 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3664 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3665 if (stub_sec == NULL)
3666 return NULL;
3667 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3668 }
3669 htab->stub_group[section->id].stub_sec = stub_sec;
3670 }
3671
3672 /* Enter this entry into the linker stub hash table. */
3673 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3674 TRUE, FALSE);
721956f4
AM		 3675 if (stub_entry == NULL)
3676 {
d003868e
AM		 3677 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3678 section->owner, stub_name);
721956f4
AM		 3679 return NULL;
3680 }
3681
3682 stub_entry->stub_sec = stub_sec;
3683 stub_entry->stub_offset = 0;
3684 stub_entry->id_sec = link_sec;
3685 return stub_entry;
3686}
3687
82bd7b59
AM		 3688/* Create sections for linker generated code. */
3689
b34976b6 3690static bfd_boolean
4ce794b7 3691create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3692{
3693 struct ppc_link_hash_table *htab;
3694 flagword flags;
3695
3696 htab = ppc_hash_table (info);
3697
3698 /* Create .sfpr for code to save and restore fp regs. */
3699 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3700 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3701 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3702 flags);
82bd7b59 3703 if (htab->sfpr == NULL
82bd7b59 3704 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3705 return FALSE;
82bd7b59 3706
721956f4 3707 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3708 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3709 flags);
4ce794b7 3710 if (htab->glink == NULL
4ce794b7 3711 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3712 return FALSE;
82bd7b59 3713
721956f4
AM		 3714 /* Create .branch_lt for plt_branch stubs. */
3715 flags = (SEC_ALLOC | SEC_LOAD
3716 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3717 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3718 flags);
4ce794b7 3719 if (htab->brlt == NULL
4ce794b7 3720 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3721 return FALSE;
721956f4 3722
ee75fd95 3723 if (info->shared || info->emitrelocations)
721956f4
AM		 3724 {
3725 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3726 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3727 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3728 ".rela.branch_lt",
3729 flags);
4ce794b7 3730 if (!htab->relbrlt
4ce794b7 3731 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3732 return FALSE;
721956f4 3733 }
b34976b6 3734 return TRUE;
82bd7b59
AM		 3735}
3736
e717da7e
AM		 3737/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3738 not already done. */
65f38f15 3739
b34976b6 3740static bfd_boolean
e717da7e 3741create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3742{
e717da7e
AM		 3743 asection *got, *relgot;
3744 flagword flags;
3745 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3746
4ce794b7 3747 if (!htab->got)
e717da7e
AM		 3748 {
3749 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3750 return FALSE;
3751
3752 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3753 if (!htab->got)
3754 abort ();
3755 }
3756
3757 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3758 | SEC_LINKER_CREATED);
3759
3496cb2a 3760 got = bfd_make_section_with_flags (abfd, ".got", flags);
e717da7e 3761 if (!got
e717da7e
AM		 3762 || !bfd_set_section_alignment (abfd, got, 3))
3763 return FALSE;
65f38f15 3764
3496cb2a
L		 3765 relgot = bfd_make_section_with_flags (abfd, ".rela.got",
3766 flags | SEC_READONLY);
e717da7e 3767 if (!relgot
e717da7e 3768 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3769 return FALSE;
e717da7e
AM		 3770
3771 ppc64_elf_tdata (abfd)->got = got;
3772 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3773 return TRUE;
65f38f15 3774}
5bd4f169 3775
82bd7b59 3776/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3777
b34976b6 3778static bfd_boolean
4ce794b7 3779ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3780{
65f38f15 3781 struct ppc_link_hash_table *htab;
5bd4f169 3782
65f38f15 3783 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3784 return FALSE;
65f38f15 3785
e717da7e
AM		 3786 htab = ppc_hash_table (info);
3787 if (!htab->got)
3788 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3789 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3790 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3791 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3792 if (!info->shared)
4ce794b7 3793 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3794
e717da7e 3795 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3796 || (!info->shared && !htab->relbss))
65f38f15
AM		 3797 abort ();
3798
b34976b6 3799 return TRUE;
5bd4f169
AM		 3800}
3801
40d16e0b
AM		 3802/* Merge PLT info on FROM with that on TO. */
3803
3804static void
3805move_plt_plist (struct ppc_link_hash_entry *from,
3806 struct ppc_link_hash_entry *to)
3807{
3808 if (from->elf.plt.plist != NULL)
3809 {
3810 if (to->elf.plt.plist != NULL)
3811 {
3812 struct plt_entry **entp;
3813 struct plt_entry *ent;
3814
3815 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3816 {
3817 struct plt_entry *dent;
3818
3819 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3820 if (dent->addend == ent->addend)
3821 {
3822 dent->plt.refcount += ent->plt.refcount;
3823 *entp = ent->next;
3824 break;
3825 }
3826 if (dent == NULL)
3827 entp = &ent->next;
3828 }
3829 *entp = to->elf.plt.plist;
3830 }
3831
3832 to->elf.plt.plist = from->elf.plt.plist;
3833 from->elf.plt.plist = NULL;
3834 }
3835}
3836
65f38f15
AM		 3837/* Copy the extra info we tack onto an elf_link_hash_entry. */
3838
3839static void
9c5bfbb7
AM		 3840ppc64_elf_copy_indirect_symbol
3841 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3842 struct elf_link_hash_entry *dir,
3843 struct elf_link_hash_entry *ind)
65f38f15
AM		 3844{
3845 struct ppc_link_hash_entry *edir, *eind;
3846
3847 edir = (struct ppc_link_hash_entry *) dir;
3848 eind = (struct ppc_link_hash_entry *) ind;
3849
411e1bfb 3850 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3851 if (eind->dyn_relocs != NULL)
65f38f15 3852 {
bbd7ec4a
AM		 3853 if (edir->dyn_relocs != NULL)
3854 {
3855 struct ppc_dyn_relocs **pp;
3856 struct ppc_dyn_relocs *p;
3857
411e1bfb 3858 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3859 abort ();
3860
3861 /* Add reloc counts against the weak sym to the strong sym
3862 list. Merge any entries against the same section. */
3863 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3864 {
3865 struct ppc_dyn_relocs *q;
3866
3867 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3868 if (q->sec == p->sec)
3869 {
3870 q->pc_count += p->pc_count;
3871 q->count += p->count;
3872 *pp = p->next;
3873 break;
3874 }
3875 if (q == NULL)
3876 pp = &p->next;
3877 }
3878 *pp = edir->dyn_relocs;
3879 }
3880
65f38f15
AM		 3881 edir->dyn_relocs = eind->dyn_relocs;
3882 eind->dyn_relocs = NULL;
3883 }
65f38f15 3884
6349e628
AM		 3885 edir->is_func |= eind->is_func;
3886 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3887 edir->tls_mask |= eind->tls_mask;
6349e628 3888
81848ca0 3889 /* If called to transfer flags for a weakdef during processing
f5385ebf 3890 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3891 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3892 if (!(ELIMINATE_COPY_RELOCS
3893 && eind->elf.root.type != bfd_link_hash_indirect
3894 && edir->elf.dynamic_adjusted))
3895 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3896
f5385ebf
AM		 3897 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3898 edir->elf.ref_regular |= eind->elf.ref_regular;
3899 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3900 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3901
3902 /* If we were called to copy over info for a weak sym, that's all. */
3903 if (eind->elf.root.type != bfd_link_hash_indirect)
3904 return;
3905
81848ca0
AM		 3906 /* Copy over got entries that we may have already seen to the
3907 symbol which just became indirect. */
411e1bfb
AM		 3908 if (eind->elf.got.glist != NULL)
3909 {
3910 if (edir->elf.got.glist != NULL)
3911 {
3912 struct got_entry **entp;
3913 struct got_entry *ent;
3914
3915 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3916 {
3917 struct got_entry *dent;
3918
3919 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3920 if (dent->addend == ent->addend
e717da7e 3921 && dent->owner == ent->owner
411e1bfb
AM		 3922 && dent->tls_type == ent->tls_type)
3923 {
3924 dent->got.refcount += ent->got.refcount;
3925 *entp = ent->next;
3926 break;
3927 }
3928 if (dent == NULL)
3929 entp = &ent->next;
3930 }
3931 *entp = edir->elf.got.glist;
3932 }
3933
3934 edir->elf.got.glist = eind->elf.got.glist;
3935 eind->elf.got.glist = NULL;
3936 }
3937
3938 /* And plt entries. */
40d16e0b 3939 move_plt_plist (eind, edir);
411e1bfb 3940
411e1bfb
AM		 3941 if (edir->elf.dynindx == -1)
3942 {
3943 edir->elf.dynindx = eind->elf.dynindx;
3944 edir->elf.dynstr_index = eind->elf.dynstr_index;
3945 eind->elf.dynindx = -1;
3946 eind->elf.dynstr_index = 0;
3947 }
3948 else
3949 BFD_ASSERT (eind->elf.dynindx == -1);
3950}
3951
8387904d
AM		 3952/* Find the function descriptor hash entry from the given function code
3953 hash entry FH. Link the entries via their OH fields. */
3954
3955static struct ppc_link_hash_entry *
3956get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3957{
3958 struct ppc_link_hash_entry *fdh = fh->oh;
3959
3960 if (fdh == NULL)
3961 {
3962 const char *fd_name = fh->elf.root.root.string + 1;
3963
3964 fdh = (struct ppc_link_hash_entry *)
3965 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3966 if (fdh != NULL)
3967 {
3968 fdh->is_func_descriptor = 1;
3969 fdh->oh = fh;
3970 fh->is_func = 1;
3971 fh->oh = fdh;
3972 }
3973 }
3974
3975 return fdh;
3976}
3977
bb700d78
AM		 3978/* Make a fake function descriptor sym for the code sym FH. */
3979
3980static struct ppc_link_hash_entry *
3981make_fdh (struct bfd_link_info *info,
908b32fc 3982 struct ppc_link_hash_entry *fh)
bb700d78
AM		 3983{
3984 bfd *abfd;
3985 asymbol *newsym;
3986 struct bfd_link_hash_entry *bh;
3987 struct ppc_link_hash_entry *fdh;
3988
3989 abfd = fh->elf.root.u.undef.abfd;
3990 newsym = bfd_make_empty_symbol (abfd);
3991 newsym->name = fh->elf.root.root.string + 1;
3992 newsym->section = bfd_und_section_ptr;
3993 newsym->value = 0;
908b32fc 3994 newsym->flags = BSF_WEAK;
bb700d78
AM		 3995
3996 bh = NULL;
3997 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3998 newsym->flags, newsym->section,
3999 newsym->value, NULL, FALSE, FALSE,
4000 &bh))
4001 return NULL;
4002
4003 fdh = (struct ppc_link_hash_entry *) bh;
4004 fdh->elf.non_elf = 0;
908b32fc
AM		 4005 fdh->fake = 1;
4006 fdh->is_func_descriptor = 1;
4007 fdh->oh = fh;
4008 fh->is_func = 1;
4009 fh->oh = fdh;
bb700d78
AM		 4010 return fdh;
4011}
4012
8387904d
AM		 4013/* Hacks to support old ABI code.
4014 When making function calls, old ABI code references function entry
4015 points (dot symbols), while new ABI code references the function
4016 descriptor symbol. We need to make any combination of reference and
4017 definition work together, without breaking archive linking.
4018
4019 For a defined function "foo" and an undefined call to "bar":
4020 An old object defines "foo" and ".foo", references ".bar" (possibly
4021 "bar" too).
4022 A new object defines "foo" and references "bar".
4023
4024 A new object thus has no problem with its undefined symbols being
4025 satisfied by definitions in an old object. On the other hand, the
4026 old object won't have ".bar" satisfied by a new object. */
4027
4028/* Fix function descriptor symbols defined in .opd sections to be
4029 function type. */
555cd476
AM		 4030
4031static bfd_boolean
433817dd 4032ppc64_elf_add_symbol_hook (bfd *ibfd,
555cd476
AM		 4033 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4034 Elf_Internal_Sym *isym,
433817dd 4035 const char **name,
555cd476
AM		 4036 flagword *flags ATTRIBUTE_UNUSED,
4037 asection **sec,
4038 bfd_vma *value ATTRIBUTE_UNUSED)
4039{
8843416a
AM		 4040 if (*sec != NULL
4041 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4042 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd
AM		 4043
4044 if ((*name)[0] == '.'
4045 && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
4046 && ELF_ST_TYPE (isym->st_info) < STT_SECTION
4047 && is_ppc64_elf_target (ibfd->xvec))
4048 ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
4049
555cd476
AM		 4050 return TRUE;
4051}
4052
8387904d 4053/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4054 inclusion of a new ABI object archive that defines "bar".
4055 NAME is a symbol defined in an archive. Return a symbol in the hash
4056 table that might be satisfied by the archive symbols. */
8387904d
AM		 4057
4058static struct elf_link_hash_entry *
4059ppc64_elf_archive_symbol_lookup (bfd *abfd,
4060 struct bfd_link_info *info,
4061 const char *name)
4062{
4063 struct elf_link_hash_entry *h;
4064 char *dot_name;
4065 size_t len;
4066
4067 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4068 if (h != NULL
4069 /* Don't return this sym if it is a fake function descriptor
4070 created by add_symbol_adjust. */
4071 && !(h->root.type == bfd_link_hash_undefweak
4072 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4073 return h;
4074
4075 if (name[0] == '.')
4076 return h;
4077
4078 len = strlen (name);
4079 dot_name = bfd_alloc (abfd, len + 2);
4080 if (dot_name == NULL)
4081 return (struct elf_link_hash_entry *) 0 - 1;
4082 dot_name[0] = '.';
4083 memcpy (dot_name + 1, name, len + 1);
4084 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4085 bfd_release (abfd, dot_name);
4086 return h;
4087}
4088
4089/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4090 new ABI object defines "bar". Well, at least, undefined dot symbols
4091 are made weak. This stops later archive searches from including an
4092 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4093 prevents the linker complaining about undefined symbols.
4094 We also check and correct mismatched symbol visibility here. The
4095 most restrictive visibility of the function descriptor and the
4096 function entry symbol is used. */
8387904d 4097
bb700d78
AM		 4098struct add_symbol_adjust_data
4099{
4100 struct bfd_link_info *info;
4101 bfd_boolean ok;
4102};
4103
8387904d
AM		 4104static bfd_boolean
4105add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4106{
bb700d78 4107 struct add_symbol_adjust_data *data;
8387904d 4108 struct ppc_link_hash_table *htab;
99877b66 4109 struct ppc_link_hash_entry *eh;
8387904d
AM		 4110 struct ppc_link_hash_entry *fdh;
4111
4112 if (h->root.type == bfd_link_hash_indirect)
4113 return TRUE;
4114
4115 if (h->root.type == bfd_link_hash_warning)
4116 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4117
35b0ce59 4118 if (h->root.root.string[0] != '.')
8387904d
AM		 4119 return TRUE;
4120
bb700d78
AM		 4121 data = inf;
4122 htab = ppc_hash_table (data->info);
99877b66
AM		 4123 eh = (struct ppc_link_hash_entry *) h;
4124 fdh = get_fdh (eh, htab);
bb700d78 4125 if (fdh == NULL
c4f68ce3 4126 && !data->info->relocatable
bb700d78
AM		 4127 && (eh->elf.root.type == bfd_link_hash_undefined
4128 || eh->elf.root.type == bfd_link_hash_undefweak)
4129 && eh->elf.ref_regular)
4130 {
4131 /* Make an undefweak function descriptor sym, which is enough to
4132 pull in an --as-needed shared lib, but won't cause link
4133 errors. Archives are handled elsewhere. */
908b32fc 4134 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4135 if (fdh == NULL)
4136 data->ok = FALSE;
4137 else
4138 fdh->elf.ref_regular = 1;
4139 }
e87d886e 4140 else if (fdh != NULL)
8387904d 4141 {
35b0ce59
AM		 4142 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4143 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4144 if (entry_vis < descr_vis)
4145 fdh->elf.other += entry_vis - descr_vis;
4146 else if (entry_vis > descr_vis)
4147 eh->elf.other += descr_vis - entry_vis;
4148
e87d886e
AM		 4149 if ((fdh->elf.root.type == bfd_link_hash_defined
4150 || fdh->elf.root.type == bfd_link_hash_defweak)
4151 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4152 {
4153 eh->elf.root.type = bfd_link_hash_undefweak;
4154 eh->was_undefined = 1;
4155 htab->twiddled_syms = 1;
4156 }
8387904d 4157 }
99877b66 4158
8387904d
AM		 4159 return TRUE;
4160}
4161
4162static bfd_boolean
433817dd 4163ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
8387904d 4164{
99877b66 4165 struct ppc_link_hash_table *htab;
bb700d78 4166 struct add_symbol_adjust_data data;
99877b66 4167
433817dd
AM		 4168 if (!is_ppc64_elf_target (abfd->xvec))
4169 return TRUE;
4170
4171 if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
4172 return TRUE;
4173 ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
4174
99877b66 4175 htab = ppc_hash_table (info);
ee75fd95 4176 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4177 return TRUE;
4178
bb700d78
AM		 4179 data.info = info;
4180 data.ok = TRUE;
4181 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4182
4183 /* We need to fix the undefs list for any syms we have twiddled to
4184 undef_weak. */
4185 if (htab->twiddled_syms)
4186 {
77cfaee6 4187 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4188 htab->twiddled_syms = 0;
4189 }
bb700d78 4190 return data.ok;
8387904d
AM		 4191}
4192
411e1bfb 4193static bfd_boolean
4ce794b7
AM		 4194update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4195 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4196{
4197 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4198 char *local_got_tls_masks;
411e1bfb
AM		 4199
4200 if (local_got_ents == NULL)
4201 {
4202 bfd_size_type size = symtab_hdr->sh_info;
4203
e7b938ca 4204 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4205 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4206 if (local_got_ents == NULL)
4207 return FALSE;
4208 elf_local_got_ents (abfd) = local_got_ents;
4209 }
4210
4211 if ((tls_type & TLS_EXPLICIT) == 0)
4212 {
4213 struct got_entry *ent;
4214
4215 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4216 if (ent->addend == r_addend
4217 && ent->owner == abfd
4218 && ent->tls_type == tls_type)
411e1bfb
AM		 4219 break;
4220 if (ent == NULL)
4221 {
4222 bfd_size_type amt = sizeof (*ent);
4ce794b7 4223 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4224 if (ent == NULL)
4225 return FALSE;
4226 ent->next = local_got_ents[r_symndx];
4227 ent->addend = r_addend;
e717da7e 4228 ent->owner = abfd;
411e1bfb
AM		 4229 ent->tls_type = tls_type;
4230 ent->got.refcount = 0;
4231 local_got_ents[r_symndx] = ent;
4232 }
4233 ent->got.refcount += 1;
4234 }
4235
e7b938ca
AM		 4236 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4237 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4238 return TRUE;
65f38f15
AM		 4239}
4240
411e1bfb 4241static bfd_boolean
4ce794b7 4242update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4243{
411e1bfb 4244 struct plt_entry *ent;
1e2f5b6e 4245
411e1bfb
AM		 4246 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4247 if (ent->addend == addend)
4248 break;
4249 if (ent == NULL)
1e2f5b6e 4250 {
411e1bfb 4251 bfd_size_type amt = sizeof (*ent);
4ce794b7 4252 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4253 if (ent == NULL)
4254 return FALSE;
4255 ent->next = eh->elf.plt.plist;
4256 ent->addend = addend;
4257 ent->plt.refcount = 0;
4258 eh->elf.plt.plist = ent;
1e2f5b6e 4259 }
411e1bfb 4260 ent->plt.refcount += 1;
f5385ebf 4261 eh->elf.needs_plt = 1;
93f3fa99
AM		 4262 if (eh->elf.root.root.string[0] == '.'
4263 && eh->elf.root.root.string[1] != '\0')
4264 eh->is_func = 1;
b34976b6 4265 return TRUE;
1e2f5b6e
AM		 4266}
4267
5bd4f169 4268/* Look through the relocs for a section during the first phase, and
65f38f15 4269 calculate needed space in the global offset table, procedure
5d1634d7 4270 linkage table, and dynamic reloc sections. */
5bd4f169 4271
b34976b6 4272static bfd_boolean
4ce794b7
AM		 4273ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4274 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4275{
65f38f15 4276 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4277 Elf_Internal_Shdr *symtab_hdr;
4278 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4279 const Elf_Internal_Rela *rel;
4280 const Elf_Internal_Rela *rel_end;
5bd4f169 4281 asection *sreloc;
1e2f5b6e 4282 asection **opd_sym_map;
5bd4f169 4283
1049f94e 4284 if (info->relocatable)
b34976b6 4285 return TRUE;
5bd4f169 4286
680a3378
AM		 4287 /* Don't do anything special with non-loaded, non-alloced sections.
4288 In particular, any relocs in such sections should not affect GOT
4289 and PLT reference counting (ie. we don't allow them to create GOT
4290 or PLT entries), there's no possibility or desire to optimize TLS
4291 relocs, and there's not much point in propagating relocs to shared
4292 libs that the dynamic linker won't relocate. */
4293 if ((sec->flags & SEC_ALLOC) == 0)
4294 return TRUE;
4295
65f38f15 4296 htab = ppc_hash_table (info);
5bd4f169 4297 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4298
4299 sym_hashes = elf_sym_hashes (abfd);
4300 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4301 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4302 - symtab_hdr->sh_info);
5bd4f169
AM		 4303
4304 sreloc = NULL;
1e2f5b6e
AM		 4305 opd_sym_map = NULL;
4306 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4307 {
4308 /* Garbage collection needs some extra help with .opd sections.
4309 We don't want to necessarily keep everything referenced by
4310 relocs in .opd, as that would keep all functions. Instead,
4311 if we reference an .opd symbol (a function descriptor), we
4312 want to keep the function code symbol's section. This is
4313 easy for global symbols, but for local syms we need to keep
4314 information about the associated function section. Later, if
4315 edit_opd deletes entries, we'll use this array to adjust
4316 local syms in .opd. */
4317 union opd_info {
4318 asection *func_section;
4319 long entry_adjust;
4320 };
4321 bfd_size_type amt;
4322
3f764659 4323 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4324 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4325 if (opd_sym_map == NULL)
b34976b6 4326 return FALSE;
f0abc2a1 4327 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4328 }
5bd4f169 4329
82bd7b59
AM		 4330 if (htab->sfpr == NULL
4331 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4332 return FALSE;
82bd7b59 4333
5bd4f169
AM		 4334 rel_end = relocs + sec->reloc_count;
4335 for (rel = relocs; rel < rel_end; rel++)
4336 {
4337 unsigned long r_symndx;
4338 struct elf_link_hash_entry *h;
04c9666a 4339 enum elf_ppc64_reloc_type r_type;
411e1bfb 4340 int tls_type = 0;
5bd4f169
AM		 4341
4342 r_symndx = ELF64_R_SYM (rel->r_info);
4343 if (r_symndx < symtab_hdr->sh_info)
4344 h = NULL;
4345 else
973a3492
L		 4346 {
4347 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4348 while (h->root.type == bfd_link_hash_indirect
4349 || h->root.type == bfd_link_hash_warning)
4350 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4351 }
5bd4f169 4352
4ce794b7 4353 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4354 switch (r_type)
5bd4f169 4355 {
411e1bfb
AM		 4356 case R_PPC64_GOT_TLSLD16:
4357 case R_PPC64_GOT_TLSLD16_LO:
4358 case R_PPC64_GOT_TLSLD16_HI:
4359 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4360 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4361 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4362 goto dogottls;
4363
4364 case R_PPC64_GOT_TLSGD16:
4365 case R_PPC64_GOT_TLSGD16_LO:
4366 case R_PPC64_GOT_TLSGD16_HI:
4367 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4368 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4369 goto dogottls;
4370
4371 case R_PPC64_GOT_TPREL16_DS:
4372 case R_PPC64_GOT_TPREL16_LO_DS:
4373 case R_PPC64_GOT_TPREL16_HI:
4374 case R_PPC64_GOT_TPREL16_HA:
4375 if (info->shared)
4376 info->flags |= DF_STATIC_TLS;
4377 tls_type = TLS_TLS | TLS_TPREL;
4378 goto dogottls;
4379
4380 case R_PPC64_GOT_DTPREL16_DS:
4381 case R_PPC64_GOT_DTPREL16_LO_DS:
4382 case R_PPC64_GOT_DTPREL16_HI:
4383 case R_PPC64_GOT_DTPREL16_HA:
4384 tls_type = TLS_TLS | TLS_DTPREL;
4385 dogottls:
4386 sec->has_tls_reloc = 1;
4387 /* Fall thru */
4388
5bd4f169 4389 case R_PPC64_GOT16:
5bd4f169 4390 case R_PPC64_GOT16_DS:
65f38f15
AM		 4391 case R_PPC64_GOT16_HA:
4392 case R_PPC64_GOT16_HI:
4393 case R_PPC64_GOT16_LO:
5bd4f169 4394 case R_PPC64_GOT16_LO_DS:
65f38f15 4395 /* This symbol requires a global offset table entry. */
4c52953f 4396 sec->has_toc_reloc = 1;
e717da7e
AM		 4397 if (ppc64_elf_tdata (abfd)->got == NULL
4398 && !create_got_section (abfd, info))
b34976b6 4399 return FALSE;
5bd4f169
AM		 4400
4401 if (h != NULL)
4402 {
411e1bfb
AM		 4403 struct ppc_link_hash_entry *eh;
4404 struct got_entry *ent;
65f38f15 4405
411e1bfb
AM		 4406 eh = (struct ppc_link_hash_entry *) h;
4407 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4408 if (ent->addend == rel->r_addend
e717da7e 4409 && ent->owner == abfd
411e1bfb
AM		 4410 && ent->tls_type == tls_type)
4411 break;
4412 if (ent == NULL)
5bd4f169 4413 {
411e1bfb 4414 bfd_size_type amt = sizeof (*ent);
4ce794b7 4415 ent = bfd_alloc (abfd, amt);
411e1bfb 4416 if (ent == NULL)
b34976b6 4417 return FALSE;
411e1bfb
AM		 4418 ent->next = eh->elf.got.glist;
4419 ent->addend = rel->r_addend;
e717da7e 4420 ent->owner = abfd;
411e1bfb
AM		 4421 ent->tls_type = tls_type;
4422 ent->got.refcount = 0;
4423 eh->elf.got.glist = ent;
5bd4f169 4424 }
411e1bfb 4425 ent->got.refcount += 1;
e7b938ca 4426 eh->tls_mask |= tls_type;
5bd4f169 4427 }
411e1bfb
AM		 4428 else
4429 /* This is a global offset table entry for a local symbol. */
4430 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4431 rel->r_addend, tls_type))
4432 return FALSE;
5bd4f169
AM		 4433 break;
4434
5bd4f169 4435 case R_PPC64_PLT16_HA:
65f38f15
AM		 4436 case R_PPC64_PLT16_HI:
4437 case R_PPC64_PLT16_LO:
4438 case R_PPC64_PLT32:
4439 case R_PPC64_PLT64:
5bd4f169 4440 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4441 actually build the entry in adjust_dynamic_symbol,
4442 because this might be a case of linking PIC code without
4443 linking in any dynamic objects, in which case we don't
4444 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4445 if (h == NULL)
4446 {
4447 /* It does not make sense to have a procedure linkage
3fad3c7c 4448 table entry for a local symbol. */
5bd4f169 4449 bfd_set_error (bfd_error_bad_value);
b34976b6 4450 return FALSE;
5bd4f169 4451 }
411e1bfb
AM		 4452 else
4453 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4454 rel->r_addend))
4455 return FALSE;
5bd4f169
AM		 4456 break;
4457
4458 /* The following relocations don't need to propagate the
4459 relocation if linking a shared object since they are
4460 section relative. */
4461 case R_PPC64_SECTOFF:
4462 case R_PPC64_SECTOFF_LO:
4463 case R_PPC64_SECTOFF_HI:
4464 case R_PPC64_SECTOFF_HA:
4465 case R_PPC64_SECTOFF_DS:
4466 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4467 case R_PPC64_DTPREL16:
4468 case R_PPC64_DTPREL16_LO:
4469 case R_PPC64_DTPREL16_HI:
4470 case R_PPC64_DTPREL16_HA:
4471 case R_PPC64_DTPREL16_DS:
4472 case R_PPC64_DTPREL16_LO_DS:
4473 case R_PPC64_DTPREL16_HIGHER:
4474 case R_PPC64_DTPREL16_HIGHERA:
4475 case R_PPC64_DTPREL16_HIGHEST:
4476 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4477 break;
4478
ad8e1ba5
AM		 4479 /* Nor do these. */
4480 case R_PPC64_TOC16:
4481 case R_PPC64_TOC16_LO:
4482 case R_PPC64_TOC16_HI:
4483 case R_PPC64_TOC16_HA:
4484 case R_PPC64_TOC16_DS:
4485 case R_PPC64_TOC16_LO_DS:
4c52953f 4486 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4487 break;
4488
5bd4f169
AM		 4489 /* This relocation describes the C++ object vtable hierarchy.
4490 Reconstruct it for later use during GC. */
4491 case R_PPC64_GNU_VTINHERIT:
c152c796 4492 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4493 return FALSE;
5bd4f169
AM		 4494 break;
4495
4496 /* This relocation describes which C++ vtable entries are actually
4497 used. Record for later use during GC. */
4498 case R_PPC64_GNU_VTENTRY:
c152c796 4499 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4500 return FALSE;
5bd4f169
AM		 4501 break;
4502
721956f4
AM		 4503 case R_PPC64_REL14:
4504 case R_PPC64_REL14_BRTAKEN:
4505 case R_PPC64_REL14_BRNTAKEN:
4506 htab->has_14bit_branch = 1;
4507 /* Fall through. */
4508
5d1634d7 4509 case R_PPC64_REL24:
8387904d 4510 if (h != NULL)
5d1634d7
AM		 4511 {
4512 /* We may need a .plt entry if the function this reloc
4513 refers to is in a shared lib. */
411e1bfb
AM		 4514 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4515 rel->r_addend))
4516 return FALSE;
8387904d
AM		 4517 if (h == &htab->tls_get_addr->elf
4518 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4519 sec->has_tls_reloc = 1;
8387904d
AM		 4520 else if (htab->tls_get_addr == NULL
4521 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4522 && (h->root.root.string[15] == 0
4523 || h->root.root.string[15] == '@'))
411e1bfb 4524 {
8387904d
AM		 4525 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4526 sec->has_tls_reloc = 1;
4527 }
4528 else if (htab->tls_get_addr_fd == NULL
4529 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4530 && (h->root.root.string[14] == 0
4531 || h->root.root.string[14] == '@'))
4532 {
4533 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4534 sec->has_tls_reloc = 1;
4535 }
4536 }
4537 break;
4538
4539 case R_PPC64_TPREL64:
4540 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4541 if (info->shared)
4542 info->flags |= DF_STATIC_TLS;
4543 goto dotlstoc;
4544
4545 case R_PPC64_DTPMOD64:
4546 if (rel + 1 < rel_end
4547 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4548 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4549 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4550 else
951fd09b 4551 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4552 goto dotlstoc;
4553
4554 case R_PPC64_DTPREL64:
4555 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4556 if (rel != relocs
4557 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4558 && rel[-1].r_offset == rel->r_offset - 8)
4559 /* This is the second reloc of a dtpmod, dtprel pair.
4560 Don't mark with TLS_DTPREL. */
4561 goto dodyn;
4562
4563 dotlstoc:
4564 sec->has_tls_reloc = 1;
4565 if (h != NULL)
4566 {
4567 struct ppc_link_hash_entry *eh;
4568 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4569 eh->tls_mask |= tls_type;
411e1bfb
AM		 4570 }
4571 else
4572 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4573 rel->r_addend, tls_type))
4574 return FALSE;
4575
4576 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4577 {
e7b938ca 4578 /* One extra to simplify get_tls_mask. */
eea6121a 4579 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4580 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4581 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4582 return FALSE;
4583 }
4584 BFD_ASSERT (rel->r_offset % 8 == 0);
4585 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4586
4587 /* Mark the second slot of a GD or LD entry.
4588 -1 to indicate GD and -2 to indicate LD. */
4589 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4590 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4591 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4592 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4593 goto dodyn;
4594
4595 case R_PPC64_TPREL16:
4596 case R_PPC64_TPREL16_LO:
4597 case R_PPC64_TPREL16_HI:
4598 case R_PPC64_TPREL16_HA:
4599 case R_PPC64_TPREL16_DS:
4600 case R_PPC64_TPREL16_LO_DS:
4601 case R_PPC64_TPREL16_HIGHER:
4602 case R_PPC64_TPREL16_HIGHERA:
4603 case R_PPC64_TPREL16_HIGHEST:
4604 case R_PPC64_TPREL16_HIGHESTA:
4605 if (info->shared)
4606 {
4607 info->flags |= DF_STATIC_TLS;
4608 goto dodyn;
5d1634d7
AM		 4609 }
4610 break;
4611
e86ce104 4612 case R_PPC64_ADDR64:
1e2f5b6e 4613 if (opd_sym_map != NULL
1e2f5b6e 4614 && rel + 1 < rel_end
4ce794b7 4615 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4616 {
8387904d
AM		 4617 if (h != NULL)
4618 {
4619 if (h->root.root.string[0] == '.'
4620 && h->root.root.string[1] != 0
4621 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4622 ;
4623 else
4624 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4625 }
4626 else
4627 {
4628 asection *s;
1e2f5b6e 4629
8387904d
AM		 4630 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4631 r_symndx);
4632 if (s == NULL)
4633 return FALSE;
4634 else if (s != sec)
3f764659 4635 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4636 }
1e2f5b6e 4637 }
e86ce104
AM		 4638 /* Fall through. */
4639
04c9666a 4640 case R_PPC64_REL30:
5bd4f169 4641 case R_PPC64_REL32:
04c9666a 4642 case R_PPC64_REL64:
65f38f15
AM		 4643 case R_PPC64_ADDR14:
4644 case R_PPC64_ADDR14_BRNTAKEN:
4645 case R_PPC64_ADDR14_BRTAKEN:
4646 case R_PPC64_ADDR16:
4647 case R_PPC64_ADDR16_DS:
4648 case R_PPC64_ADDR16_HA:
4649 case R_PPC64_ADDR16_HI:
4650 case R_PPC64_ADDR16_HIGHER:
4651 case R_PPC64_ADDR16_HIGHERA:
4652 case R_PPC64_ADDR16_HIGHEST:
4653 case R_PPC64_ADDR16_HIGHESTA:
4654 case R_PPC64_ADDR16_LO:
4655 case R_PPC64_ADDR16_LO_DS:
4656 case R_PPC64_ADDR24:
65f38f15 4657 case R_PPC64_ADDR32:
65f38f15
AM		 4658 case R_PPC64_UADDR16:
4659 case R_PPC64_UADDR32:
4660 case R_PPC64_UADDR64:
5bd4f169 4661 case R_PPC64_TOC:
81848ca0
AM		 4662 if (h != NULL && !info->shared)
4663 /* We may need a copy reloc. */
f5385ebf 4664 h->non_got_ref = 1;
81848ca0 4665
41bd81ab 4666 /* Don't propagate .opd relocs. */
1e2f5b6e 4667 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4668 break;
e86ce104 4669
65f38f15
AM		 4670 /* If we are creating a shared library, and this is a reloc
4671 against a global symbol, or a non PC relative reloc
4672 against a local symbol, then we need to copy the reloc
4673 into the shared library. However, if we are linking with
4674 -Bsymbolic, we do not need to copy a reloc against a
4675 global symbol which is defined in an object we are
4676 including in the link (i.e., DEF_REGULAR is set). At
4677 this point we have not seen all the input files, so it is
4678 possible that DEF_REGULAR is not set now but will be set
4679 later (it is never cleared). In case of a weak definition,
4680 DEF_REGULAR may be cleared later by a strong definition in
4681 a shared library. We account for that possibility below by
f4656909 4682 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4683 table entry. A similar situation occurs when creating
4684 shared libraries and symbol visibility changes render the
4685 symbol local.
4686
4687 If on the other hand, we are creating an executable, we
4688 may need to keep relocations for symbols satisfied by a
4689 dynamic library if we manage to avoid copy relocs for the
4690 symbol. */
411e1bfb 4691 dodyn:
65f38f15 4692 if ((info->shared
411e1bfb 4693 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4694 || (h != NULL
4695 && (! info->symbolic
4696 || h->root.type == bfd_link_hash_defweak
f5385ebf 4697 || !h->def_regular))))
f4656909
AM		 4698 || (ELIMINATE_COPY_RELOCS
4699 && !info->shared
65f38f15
AM		 4700 && h != NULL
4701 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4702 || !h->def_regular)))
5bd4f169 4703 {
ec338859
AM		 4704 struct ppc_dyn_relocs *p;
4705 struct ppc_dyn_relocs **head;
4706
65f38f15
AM		 4707 /* We must copy these reloc types into the output file.
4708 Create a reloc section in dynobj and make room for
4709 this reloc. */
5bd4f169
AM		 4710 if (sreloc == NULL)
4711 {
4712 const char *name;
65f38f15 4713 bfd *dynobj;
5bd4f169
AM		 4714
4715 name = (bfd_elf_string_from_elf_section
4716 (abfd,
4717 elf_elfheader (abfd)->e_shstrndx,
4718 elf_section_data (sec)->rel_hdr.sh_name));
4719 if (name == NULL)
b34976b6 4720 return FALSE;
5bd4f169 4721
65f38f15
AM		 4722 if (strncmp (name, ".rela", 5) != 0
4723 || strcmp (bfd_get_section_name (abfd, sec),
4724 name + 5) != 0)
4725 {
4726 (*_bfd_error_handler)
d003868e
AM		 4727 (_("%B: bad relocation section name `%s\'"),
4728 abfd, name);
5d1634d7 4729 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4730 }
4731
65f38f15 4732 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4733 sreloc = bfd_get_section_by_name (dynobj, name);
4734 if (sreloc == NULL)
4735 {
4736 flagword flags;
4737
5bd4f169 4738 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4739 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4740 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4741 sreloc = bfd_make_section_with_flags (dynobj,
4742 name,
4743 flags);
5bd4f169 4744 if (sreloc == NULL
65f38f15 4745 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4746 return FALSE;
5bd4f169 4747 }
65f38f15 4748 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4749 }
4750
65f38f15
AM		 4751 /* If this is a global symbol, we count the number of
4752 relocations we need for this symbol. */
4753 if (h != NULL)
4754 {
ec338859 4755 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4756 }
4757 else
4758 {
ec338859
AM		 4759 /* Track dynamic relocs needed for local syms too.
4760 We really need local syms available to do this
4761 easily. Oh well. */
4762
4763 asection *s;
4764 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4765 sec, r_symndx);
4766 if (s == NULL)
b34976b6 4767 return FALSE;
ec338859
AM		 4768
4769 head = ((struct ppc_dyn_relocs **)
4770 &elf_section_data (s)->local_dynrel);
65f38f15 4771 }
ec338859
AM		 4772
4773 p = *head;
4774 if (p == NULL || p->sec != sec)
4775 {
4ce794b7 4776 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4777 if (p == NULL)
b34976b6 4778 return FALSE;
ec338859
AM		 4779 p->next = *head;
4780 *head = p;
4781 p->sec = sec;
4782 p->count = 0;
4783 p->pc_count = 0;
4784 }
4785
4786 p->count += 1;
411e1bfb 4787 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4788 p->pc_count += 1;
65f38f15 4789 }
5bd4f169 4790 break;
65f38f15
AM		 4791
4792 default:
96e0dda4 4793 break;
5bd4f169
AM		 4794 }
4795 }
4796
b34976b6 4797 return TRUE;
5bd4f169
AM		 4798}
4799
8387904d
AM		 4800/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4801 of the code entry point, and its section. */
4802
4803static bfd_vma
4804opd_entry_value (asection *opd_sec,
4805 bfd_vma offset,
4806 asection **code_sec,
4807 bfd_vma *code_off)
4808{
4809 bfd *opd_bfd = opd_sec->owner;
8860955f 4810 Elf_Internal_Rela *relocs;
8387904d 4811 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4812 bfd_vma val;
8387904d 4813
4b85d634
AM		 4814 /* No relocs implies we are linking a --just-symbols object. */
4815 if (opd_sec->reloc_count == 0)
4816 {
4817 bfd_vma val;
4818
4819 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4820 return (bfd_vma) -1;
3b36f7e6 4821
4b85d634
AM		 4822 if (code_sec != NULL)
4823 {
4824 asection *sec, *likely = NULL;
4825 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4826 if (sec->vma <= val
4827 && (sec->flags & SEC_LOAD) != 0
4828 && (sec->flags & SEC_ALLOC) != 0)
4829 likely = sec;
4830 if (likely != NULL)
4831 {
4832 *code_sec = likely;
4833 if (code_off != NULL)
4834 *code_off = val - likely->vma;
4835 }
4836 }
4837 return val;
4838 }
4839
8860955f
AM		 4840 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4841 if (relocs == NULL)
4842 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4843
8387904d 4844 /* Go find the opd reloc at the sym address. */
8860955f 4845 lo = relocs;
8387904d
AM		 4846 BFD_ASSERT (lo != NULL);
4847 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4848 val = (bfd_vma) -1;
8387904d
AM		 4849 while (lo < hi)
4850 {
4851 look = lo + (hi - lo) / 2;
4852 if (look->r_offset < offset)
4853 lo = look + 1;
4854 else if (look->r_offset > offset)
4855 hi = look;
4856 else
4857 {
4858 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4859 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4860 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4861 {
4862 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4863 asection *sec;
4864
4865 if (symndx < symtab_hdr->sh_info)
4866 {
4867 Elf_Internal_Sym *sym;
4868
4869 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4870 if (sym == NULL)
4871 {
4872 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4873 symtab_hdr->sh_info,
4874 0, NULL, NULL, NULL);
4875 if (sym == NULL)
645ea6a9 4876 break;
8387904d
AM		 4877 symtab_hdr->contents = (bfd_byte *) sym;
4878 }
4879
4880 sym += symndx;
4881 val = sym->st_value;
4882 sec = NULL;
4883 if ((sym->st_shndx != SHN_UNDEF
4884 && sym->st_shndx < SHN_LORESERVE)
4885 || sym->st_shndx > SHN_HIRESERVE)
4886 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4887 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4888 }
4889 else
4890 {
4891 struct elf_link_hash_entry **sym_hashes;
4892 struct elf_link_hash_entry *rh;
4893
4894 sym_hashes = elf_sym_hashes (opd_bfd);
4895 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4896 while (rh->root.type == bfd_link_hash_indirect
4897 || rh->root.type == bfd_link_hash_warning)
4898 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4899 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4900 || rh->root.type == bfd_link_hash_defweak);
4901 val = rh->root.u.def.value;
4902 sec = rh->root.u.def.section;
4903 }
4904 val += look->r_addend;
4905 if (code_off != NULL)
4906 *code_off = val;
4907 if (code_sec != NULL)
4908 *code_sec = sec;
4909 if (sec != NULL && sec->output_section != NULL)
4910 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4911 }
4912 break;
4913 }
4914 }
645ea6a9 4915
645ea6a9 4916 return val;
8387904d
AM		 4917}
4918
5bd4f169
AM		 4919/* Return the section that should be marked against GC for a given
4920 relocation. */
4921
4922static asection *
4ce794b7 4923ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4924 struct bfd_link_info *info,
4ce794b7
AM		 4925 Elf_Internal_Rela *rel,
4926 struct elf_link_hash_entry *h,
4927 Elf_Internal_Sym *sym)
5bd4f169 4928{
ccfa59ea
AM		 4929 asection *rsec;
4930
4931 /* First mark all our entry sym sections. */
4932 if (info->gc_sym_list != NULL)
4933 {
4934 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4935 struct bfd_sym_chain *sym = info->gc_sym_list;
4936
4937 info->gc_sym_list = NULL;
4938 do
4939 {
4940 struct ppc_link_hash_entry *eh;
4941
4942 eh = (struct ppc_link_hash_entry *)
4943 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4944 if (eh == NULL)
4945 continue;
4946 if (eh->elf.root.type != bfd_link_hash_defined
4947 && eh->elf.root.type != bfd_link_hash_defweak)
4948 continue;
4949
c4f68ce3
AM		 4950 if (eh->is_func_descriptor
4951 && (eh->oh->elf.root.type == bfd_link_hash_defined
4952 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4953 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4954 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4955 && opd_entry_value (eh->elf.root.u.def.section,
4956 eh->elf.root.u.def.value,
4957 &rsec, NULL) != (bfd_vma) -1)
4958 ;
ccfa59ea
AM		 4959 else
4960 continue;
4961
4962 if (!rsec->gc_mark)
4963 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4964
4965 rsec = eh->elf.root.u.def.section;
4966 if (!rsec->gc_mark)
4967 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4968
4969 sym = sym->next;
4970 }
4971 while (sym != NULL);
4972 }
4973
4974 /* Syms return NULL if we're marking .opd, so we avoid marking all
4975 function sections, as all functions are referenced in .opd. */
4976 rsec = NULL;
4977 if (get_opd_info (sec) != NULL)
4978 return rsec;
1e2f5b6e 4979
5bd4f169
AM		 4980 if (h != NULL)
4981 {
04c9666a 4982 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4983 struct ppc_link_hash_entry *eh;
a33d1f77 4984
4ce794b7 4985 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4986 switch (r_type)
5bd4f169
AM		 4987 {
4988 case R_PPC64_GNU_VTINHERIT:
4989 case R_PPC64_GNU_VTENTRY:
4990 break;
4991
4992 default:
4993 switch (h->root.type)
4994 {
4995 case bfd_link_hash_defined:
4996 case bfd_link_hash_defweak:
ccfa59ea 4997 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 4998 if (eh->oh != NULL
4999 && eh->oh->is_func_descriptor
5000 && (eh->oh->elf.root.type == bfd_link_hash_defined
5001 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5002 eh = eh->oh;
1e2f5b6e
AM		 5003
5004 /* Function descriptor syms cause the associated
5005 function code sym section to be marked. */
c4f68ce3
AM		 5006 if (eh->is_func_descriptor
5007 && (eh->oh->elf.root.type == bfd_link_hash_defined
5008 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5009 {
5010 /* They also mark their opd section. */
5011 if (!eh->elf.root.u.def.section->gc_mark)
5012 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5013 ppc64_elf_gc_mark_hook);
5014
5015 rsec = eh->oh->elf.root.u.def.section;
5016 }
8387904d
AM		 5017 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5018 && opd_entry_value (eh->elf.root.u.def.section,
5019 eh->elf.root.u.def.value,
5020 &rsec, NULL) != (bfd_vma) -1)
5021 {
5022 if (!eh->elf.root.u.def.section->gc_mark)
5023 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5024 ppc64_elf_gc_mark_hook);
5025 }
ccfa59ea 5026 else
1e2f5b6e
AM		 5027 rsec = h->root.u.def.section;
5028 break;
5bd4f169
AM		 5029
5030 case bfd_link_hash_common:
1e2f5b6e
AM		 5031 rsec = h->root.u.c.p->section;
5032 break;
5bd4f169
AM		 5033
5034 default:
5035 break;
5036 }
5037 }
5038 }
5039 else
5040 {
1e2f5b6e
AM		 5041 asection **opd_sym_section;
5042
5043 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5044 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5045 if (opd_sym_section != NULL)
ccfa59ea
AM		 5046 {
5047 if (!rsec->gc_mark)
5048 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5049
b4f4e59f 5050 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5051 }
5bd4f169
AM		 5052 }
5053
1e2f5b6e 5054 return rsec;
5bd4f169
AM		 5055}
5056
65f38f15
AM		 5057/* Update the .got, .plt. and dynamic reloc reference counts for the
5058 section being removed. */
5bd4f169 5059
b34976b6 5060static bfd_boolean
4ce794b7
AM		 5061ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5062 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5063{
411e1bfb 5064 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5065 Elf_Internal_Shdr *symtab_hdr;
5066 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5067 struct got_entry **local_got_ents;
5bd4f169 5068 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5069
680a3378
AM		 5070 if ((sec->flags & SEC_ALLOC) == 0)
5071 return TRUE;
5072
ec338859
AM		 5073 elf_section_data (sec)->local_dynrel = NULL;
5074
411e1bfb 5075 htab = ppc_hash_table (info);
5bd4f169
AM		 5076 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5077 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5078 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5079
5080 relend = relocs + sec->reloc_count;
5081 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5082 {
5083 unsigned long r_symndx;
04c9666a 5084 enum elf_ppc64_reloc_type r_type;
58ac9f71 5085 struct elf_link_hash_entry *h = NULL;
411e1bfb 5086 char tls_type = 0;
5bd4f169 5087
a33d1f77 5088 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5089 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5090 if (r_symndx >= symtab_hdr->sh_info)
5091 {
5092 struct ppc_link_hash_entry *eh;
5093 struct ppc_dyn_relocs **pp;
5094 struct ppc_dyn_relocs *p;
5095
5096 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5097 while (h->root.type == bfd_link_hash_indirect
5098 || h->root.type == bfd_link_hash_warning)
5099 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5100 eh = (struct ppc_link_hash_entry *) h;
5101
5102 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5103 if (p->sec == sec)
5104 {
5105 /* Everything must go for SEC. */
5106 *pp = p->next;
5107 break;
5108 }
5109 }
5110
a33d1f77
AM		 5111 switch (r_type)
5112 {
411e1bfb
AM		 5113 case R_PPC64_GOT_TLSLD16:
5114 case R_PPC64_GOT_TLSLD16_LO:
5115 case R_PPC64_GOT_TLSLD16_HI:
5116 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5117 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5118 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5119 goto dogot;
5120
5121 case R_PPC64_GOT_TLSGD16:
5122 case R_PPC64_GOT_TLSGD16_LO:
5123 case R_PPC64_GOT_TLSGD16_HI:
5124 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5125 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5126 goto dogot;
5127
5128 case R_PPC64_GOT_TPREL16_DS:
5129 case R_PPC64_GOT_TPREL16_LO_DS:
5130 case R_PPC64_GOT_TPREL16_HI:
5131 case R_PPC64_GOT_TPREL16_HA:
5132 tls_type = TLS_TLS | TLS_TPREL;
5133 goto dogot;
5134
5135 case R_PPC64_GOT_DTPREL16_DS:
5136 case R_PPC64_GOT_DTPREL16_LO_DS:
5137 case R_PPC64_GOT_DTPREL16_HI:
5138 case R_PPC64_GOT_DTPREL16_HA:
5139 tls_type = TLS_TLS | TLS_DTPREL;
5140 goto dogot;
5141
a33d1f77
AM		 5142 case R_PPC64_GOT16:
5143 case R_PPC64_GOT16_DS:
5144 case R_PPC64_GOT16_HA:
5145 case R_PPC64_GOT16_HI:
5146 case R_PPC64_GOT16_LO:
5147 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5148 dogot:
5149 {
5150 struct got_entry *ent;
5151
58ac9f71
AM		 5152 if (h != NULL)
5153 ent = h->got.glist;
411e1bfb
AM		 5154 else
5155 ent = local_got_ents[r_symndx];
5156
5157 for (; ent != NULL; ent = ent->next)
5158 if (ent->addend == rel->r_addend
e717da7e 5159 && ent->owner == abfd
411e1bfb
AM		 5160 && ent->tls_type == tls_type)
5161 break;
5162 if (ent == NULL)
5163 abort ();
5164 if (ent->got.refcount > 0)
5165 ent->got.refcount -= 1;
5166 }
a33d1f77 5167 break;
65f38f15 5168
a33d1f77
AM		 5169 case R_PPC64_PLT16_HA:
5170 case R_PPC64_PLT16_HI:
5171 case R_PPC64_PLT16_LO:
5172 case R_PPC64_PLT32:
5173 case R_PPC64_PLT64:
721956f4
AM		 5174 case R_PPC64_REL14:
5175 case R_PPC64_REL14_BRNTAKEN:
5176 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5177 case R_PPC64_REL24:
58ac9f71 5178 if (h != NULL)
5d1634d7 5179 {
411e1bfb
AM		 5180 struct plt_entry *ent;
5181
411e1bfb
AM		 5182 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5183 if (ent->addend == rel->r_addend)
5184 break;
5185 if (ent == NULL)
5186 abort ();
5187 if (ent->plt.refcount > 0)
5188 ent->plt.refcount -= 1;
5d1634d7 5189 }
e86ce104 5190 break;
5d1634d7 5191
a33d1f77
AM		 5192 default:
5193 break;
5194 }
5195 }
b34976b6 5196 return TRUE;
5bd4f169
AM		 5197}
5198
deb0e272
AM		 5199/* The maximum size of .sfpr. */
5200#define SFPR_MAX (218*4)
5201
5202struct sfpr_def_parms
5203{
699733f6
AM		 5204 const char name[12];
5205 unsigned char lo, hi;
deb0e272
AM		 5206 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5207 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5208};
5209
5210/* Auto-generate _save*, _rest* functions in .sfpr. */
5211
5212static unsigned int
5213sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5214{
5215 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5216 unsigned int i;
5217 size_t len = strlen (parm->name);
5218 bfd_boolean writing = FALSE;
699733f6 5219 char sym[16];
deb0e272
AM		 5220
5221 memcpy (sym, parm->name, len);
5222 sym[len + 2] = 0;
5223
5224 for (i = parm->lo; i <= parm->hi; i++)
5225 {
5226 struct elf_link_hash_entry *h;
5227
5228 sym[len + 0] = i / 10 + '0';
5229 sym[len + 1] = i % 10 + '0';
5230 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5231 if (h != NULL
f5385ebf 5232 && !h->def_regular)
deb0e272
AM		 5233 {
5234 h->root.type = bfd_link_hash_defined;
5235 h->root.u.def.section = htab->sfpr;
5236 h->root.u.def.value = htab->sfpr->size;
5237 h->type = STT_FUNC;
f5385ebf 5238 h->def_regular = 1;
deb0e272
AM		 5239 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5240 writing = TRUE;
5241 if (htab->sfpr->contents == NULL)
5242 {
5243 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5244 if (htab->sfpr->contents == NULL)
5245 return FALSE;
5246 }
5247 }
5248 if (writing)
5249 {
5250 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5251 if (i != parm->hi)
5252 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5253 else
5254 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5255 htab->sfpr->size = p - htab->sfpr->contents;
5256 }
5257 }
5258
5259 return TRUE;
5260}
5261
5262static bfd_byte *
5263savegpr0 (bfd *abfd, bfd_byte *p, int r)
5264{
5265 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5266 return p + 4;
5267}
5268
5269static bfd_byte *
5270savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5271{
5272 p = savegpr0 (abfd, p, r);
5273 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5274 p = p + 4;
5275 bfd_put_32 (abfd, BLR, p);
5276 return p + 4;
5277}
5278
5279static bfd_byte *
5280restgpr0 (bfd *abfd, bfd_byte *p, int r)
5281{
5282 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5283 return p + 4;
5284}
5285
5286static bfd_byte *
5287restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5288{
5289 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5290 p = p + 4;
5291 p = restgpr0 (abfd, p, r);
5292 bfd_put_32 (abfd, MTLR_R0, p);
5293 p = p + 4;
5294 if (r == 29)
5295 {
5296 p = restgpr0 (abfd, p, 30);
5297 p = restgpr0 (abfd, p, 31);
5298 }
5299 bfd_put_32 (abfd, BLR, p);
5300 return p + 4;
5301}
5302
5303static bfd_byte *
5304savegpr1 (bfd *abfd, bfd_byte *p, int r)
5305{
5306 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5307 return p + 4;
5308}
5309
5310static bfd_byte *
5311savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5312{
5313 p = savegpr1 (abfd, p, r);
5314 bfd_put_32 (abfd, BLR, p);
5315 return p + 4;
5316}
5317
5318static bfd_byte *
5319restgpr1 (bfd *abfd, bfd_byte *p, int r)
5320{
5321 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5322 return p + 4;
5323}
5324
5325static bfd_byte *
5326restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5327{
5328 p = restgpr1 (abfd, p, r);
5329 bfd_put_32 (abfd, BLR, p);
5330 return p + 4;
5331}
5332
5333static bfd_byte *
5334savefpr (bfd *abfd, bfd_byte *p, int r)
5335{
5336 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5337 return p + 4;
5338}
5339
5340static bfd_byte *
5341savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5342{
5343 p = savefpr (abfd, p, r);
5344 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5345 p = p + 4;
5346 bfd_put_32 (abfd, BLR, p);
5347 return p + 4;
5348}
5349
5350static bfd_byte *
5351restfpr (bfd *abfd, bfd_byte *p, int r)
5352{
5353 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5354 return p + 4;
5355}
5356
5357static bfd_byte *
5358restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5359{
5360 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5361 p = p + 4;
5362 p = restfpr (abfd, p, r);
5363 bfd_put_32 (abfd, MTLR_R0, p);
5364 p = p + 4;
5365 if (r == 29)
5366 {
5367 p = restfpr (abfd, p, 30);
5368 p = restfpr (abfd, p, 31);
5369 }
5370 bfd_put_32 (abfd, BLR, p);
5371 return p + 4;
5372}
5373
5374static bfd_byte *
5375savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5376{
5377 p = savefpr (abfd, p, r);
5378 bfd_put_32 (abfd, BLR, p);
5379 return p + 4;
5380}
5381
5382static bfd_byte *
5383restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5384{
5385 p = restfpr (abfd, p, r);
5386 bfd_put_32 (abfd, BLR, p);
5387 return p + 4;
5388}
5389
5390static bfd_byte *
5391savevr (bfd *abfd, bfd_byte *p, int r)
5392{
5393 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5394 p = p + 4;
5395 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5396 return p + 4;
5397}
5398
5399static bfd_byte *
5400savevr_tail (bfd *abfd, bfd_byte *p, int r)
5401{
5402 p = savevr (abfd, p, r);
5403 bfd_put_32 (abfd, BLR, p);
5404 return p + 4;
5405}
5406
5407static bfd_byte *
5408restvr (bfd *abfd, bfd_byte *p, int r)
5409{
5410 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5411 p = p + 4;
5412 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5413 return p + 4;
5414}
5415
5416static bfd_byte *
5417restvr_tail (bfd *abfd, bfd_byte *p, int r)
5418{
5419 p = restvr (abfd, p, r);
5420 bfd_put_32 (abfd, BLR, p);
5421 return p + 4;
5422}
5423
e86ce104
AM		 5424/* Called via elf_link_hash_traverse to transfer dynamic linking
5425 information on function code symbol entries to their corresponding
5426 function descriptor symbol entries. */
deb0e272 5427
b34976b6 5428static bfd_boolean
4ce794b7 5429func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5430{
e86ce104 5431 struct bfd_link_info *info;
65f38f15 5432 struct ppc_link_hash_table *htab;
411e1bfb 5433 struct plt_entry *ent;
50bc7936
AM		 5434 struct ppc_link_hash_entry *fh;
5435 struct ppc_link_hash_entry *fdh;
5436 bfd_boolean force_local;
5bd4f169 5437
50bc7936
AM		 5438 fh = (struct ppc_link_hash_entry *) h;
5439 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5440 return TRUE;
e86ce104 5441
50bc7936
AM		 5442 if (fh->elf.root.type == bfd_link_hash_warning)
5443 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5444
4ce794b7 5445 info = inf;
65f38f15 5446 htab = ppc_hash_table (info);
5bd4f169 5447
c09bdfe5
AM		 5448 /* Resolve undefined references to dot-symbols as the value
5449 in the function descriptor, if we have one in a regular object.
5450 This is to satisfy cases like ".quad .foo". Calls to functions
5451 in dynamic objects are handled elsewhere. */
5452 if (fh->elf.root.type == bfd_link_hash_undefweak
5453 && fh->was_undefined
5454 && (fh->oh->elf.root.type == bfd_link_hash_defined
5455 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5456 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5457 && opd_entry_value (fh->oh->elf.root.u.def.section,
5458 fh->oh->elf.root.u.def.value,
5459 &fh->elf.root.u.def.section,
5460 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5461 {
5462 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5463 fh->elf.forced_local = 1;
c09bdfe5
AM		 5464 }
5465
e86ce104
AM		 5466 /* If this is a function code symbol, transfer dynamic linking
5467 information to the function descriptor symbol. */
50bc7936 5468 if (!fh->is_func)
b34976b6 5469 return TRUE;
e86ce104 5470
50bc7936 5471 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5472 if (ent->plt.refcount > 0)
5473 break;
50bc7936
AM		 5474 if (ent == NULL
5475 || fh->elf.root.root.string[0] != '.'
5476 || fh->elf.root.root.string[1] == '\0')
5477 return TRUE;
5bd4f169 5478
50bc7936
AM		 5479 /* Find the corresponding function descriptor symbol. Create it
5480 as undefined if necessary. */
5bd4f169 5481
50bc7936
AM		 5482 fdh = get_fdh (fh, htab);
5483 if (fdh != NULL)
5484 while (fdh->elf.root.type == bfd_link_hash_indirect
5485 || fdh->elf.root.type == bfd_link_hash_warning)
5486 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5487
50bc7936
AM		 5488 if (fdh == NULL
5489 && info->shared
5490 && (fh->elf.root.type == bfd_link_hash_undefined
5491 || fh->elf.root.type == bfd_link_hash_undefweak))
5492 {
908b32fc 5493 fdh = make_fdh (info, fh);
bb700d78
AM		 5494 if (fdh == NULL)
5495 return FALSE;
50bc7936 5496 }
648cca2c 5497
908b32fc 5498 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5499 code symbol is strong undefined, make the fake sym the same.
5500 If the function code symbol is defined, then force the fake
5501 descriptor local; We can't support overriding of symbols in a
5502 shared library on a fake descriptor. */
908b32fc
AM		 5503
5504 if (fdh != NULL
5505 && fdh->fake
433817dd 5506 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5507 {
433817dd
AM		 5508 if (fh->elf.root.type == bfd_link_hash_undefined)
5509 {
5510 fdh->elf.root.type = bfd_link_hash_undefined;
5511 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5512 }
5513 else if (fh->elf.root.type == bfd_link_hash_defined
5514 || fh->elf.root.type == bfd_link_hash_defweak)
5515 {
5516 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5517 }
908b32fc
AM		 5518 }
5519
50bc7936 5520 if (fdh != NULL
f5385ebf 5521 && !fdh->elf.forced_local
50bc7936 5522 && (info->shared
f5385ebf
AM		 5523 || fdh->elf.def_dynamic
5524 || fdh->elf.ref_dynamic
50bc7936
AM		 5525 || (fdh->elf.root.type == bfd_link_hash_undefweak
5526 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5527 {
5528 if (fdh->elf.dynindx == -1)
c152c796 5529 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5530 return FALSE;
f5385ebf
AM		 5531 fdh->elf.ref_regular |= fh->elf.ref_regular;
5532 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5533 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5534 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5535 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5536 {
40d16e0b 5537 move_plt_plist (fh, fdh);
f5385ebf 5538 fdh->elf.needs_plt = 1;
e86ce104 5539 }
50bc7936 5540 fdh->is_func_descriptor = 1;
34814b9f
AM		 5541 fdh->oh = fh;
5542 fh->oh = fdh;
e86ce104
AM		 5543 }
5544
50bc7936
AM		 5545 /* Now that the info is on the function descriptor, clear the
5546 function code sym info. Any function code syms for which we
5547 don't have a definition in a regular file, we force local.
5548 This prevents a shared library from exporting syms that have
5549 been imported from another library. Function code syms that
5550 are really in the library we must leave global to prevent the
5551 linker dragging in a definition from a static library. */
93f3fa99
AM		 5552 force_local = (!fh->elf.def_regular
5553 || fdh == NULL
5554 || !fdh->elf.def_regular
5555 || fdh->elf.forced_local);
50bc7936
AM		 5556 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5557
b34976b6 5558 return TRUE;
e86ce104 5559}
40b8271b 5560
e86ce104 5561/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5562 this hook to a) provide some gcc support functions, and b) transfer
5563 dynamic linking information gathered so far on function code symbol
5564 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5565
b34976b6 5566static bfd_boolean
4ce794b7
AM		 5567ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5568 struct bfd_link_info *info)
e86ce104
AM		 5569{
5570 struct ppc_link_hash_table *htab;
82bd7b59 5571 unsigned int i;
deb0e272
AM		 5572 const struct sfpr_def_parms funcs[] =
5573 {
5574 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5575 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5576 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5577 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5578 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5579 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5580 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5581 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5582 { "._savef", 14, 31, savefpr, savefpr1_tail },
5583 { "._restf", 14, 31, restfpr, restfpr1_tail },
5584 { "_savevr_", 20, 31, savevr, savevr_tail },
5585 { "_restvr_", 20, 31, restvr, restvr_tail }
5586 };
e86ce104
AM		 5587
5588 htab = ppc_hash_table (info);
82bd7b59
AM		 5589 if (htab->sfpr == NULL)
5590 /* We don't have any relocs. */
b34976b6 5591 return TRUE;
82bd7b59 5592
deb0e272
AM		 5593 /* Provide any missing _save* and _rest* functions. */
5594 htab->sfpr->size = 0;
5595 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5596 if (!sfpr_define (info, &funcs[i]))
5597 return FALSE;
82bd7b59 5598
4ce794b7 5599 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5600
eea6121a 5601 if (htab->sfpr->size == 0)
8423293d 5602 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5603
b34976b6 5604 return TRUE;
e86ce104
AM		 5605}
5606
5607/* Adjust a symbol defined by a dynamic object and referenced by a
5608 regular object. The current definition is in some section of the
5609 dynamic object, but we're not including those sections. We have to
5610 change the definition to something the rest of the link can
5611 understand. */
5612
b34976b6 5613static bfd_boolean
4ce794b7
AM		 5614ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5615 struct elf_link_hash_entry *h)
e86ce104
AM		 5616{
5617 struct ppc_link_hash_table *htab;
e86ce104
AM		 5618 asection *s;
5619 unsigned int power_of_two;
5620
5621 htab = ppc_hash_table (info);
5622
5623 /* Deal with function syms. */
5624 if (h->type == STT_FUNC
f5385ebf 5625 || h->needs_plt)
e86ce104
AM		 5626 {
5627 /* Clear procedure linkage table information for any symbol that
5628 won't need a .plt entry. */
411e1bfb
AM		 5629 struct plt_entry *ent;
5630 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5631 if (ent->plt.refcount > 0)
5632 break;
8387904d 5633 if (ent == NULL
9c7a29a3
AM		 5634 || SYMBOL_CALLS_LOCAL (info, h)
5635 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5636 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5637 {
411e1bfb 5638 h->plt.plist = NULL;
f5385ebf 5639 h->needs_plt = 0;
40b8271b 5640 }
5bd4f169 5641 }
bbd7ec4a 5642 else
411e1bfb 5643 h->plt.plist = NULL;
5bd4f169
AM		 5644
5645 /* If this is a weak symbol, and there is a real definition, the
5646 processor independent code will have arranged for us to see the
5647 real definition first, and we can just use the same value. */
f6e332e6 5648 if (h->u.weakdef != NULL)
5bd4f169 5649 {
f6e332e6
AM		 5650 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5651 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5652 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5653 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5654 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5655 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5656 return TRUE;
5bd4f169
AM		 5657 }
5658
5bd4f169
AM		 5659 /* If we are creating a shared library, we must presume that the
5660 only references to the symbol are via the global offset table.
5661 For such cases we need not do anything here; the relocations will
5662 be handled correctly by relocate_section. */
5663 if (info->shared)
b34976b6 5664 return TRUE;
5bd4f169 5665
65f38f15
AM		 5666 /* If there are no references to this symbol that do not use the
5667 GOT, we don't need to generate a copy reloc. */
f5385ebf 5668 if (!h->non_got_ref)
b34976b6 5669 return TRUE;
65f38f15 5670
f4656909 5671 if (ELIMINATE_COPY_RELOCS)
65f38f15 5672 {
f4656909
AM		 5673 struct ppc_link_hash_entry * eh;
5674 struct ppc_dyn_relocs *p;
65f38f15 5675
f4656909
AM		 5676 eh = (struct ppc_link_hash_entry *) h;
5677 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5678 {
5679 s = p->sec->output_section;
5680 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5681 break;
5682 }
5683
5684 /* If we didn't find any dynamic relocs in read-only sections, then
5685 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5686 if (p == NULL)
5687 {
f5385ebf 5688 h->non_got_ref = 0;
f4656909
AM		 5689 return TRUE;
5690 }
65f38f15
AM		 5691 }
5692
5d35169e 5693 if (h->plt.plist != NULL)
97b639ba
AM		 5694 {
5695 /* We should never get here, but unfortunately there are versions
5696 of gcc out there that improperly (for this ABI) put initialized
5697 function pointers, vtable refs and suchlike in read-only
5698 sections. Allow them to proceed, but warn that this might
5699 break at runtime. */
5700 (*_bfd_error_handler)
5701 (_("copy reloc against `%s' requires lazy plt linking; "
5702 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5703 h->root.root.string);
5704 }
5d35169e
AM		 5705
5706 /* This is a reference to a symbol defined by a dynamic object which
5707 is not a function. */
5708
5bd4f169
AM		 5709 /* We must allocate the symbol in our .dynbss section, which will
5710 become part of the .bss section of the executable. There will be
5711 an entry for this symbol in the .dynsym section. The dynamic
5712 object will contain position independent code, so all references
5713 from the dynamic object to this symbol will go through the global
5714 offset table. The dynamic linker will use the .dynsym entry to
5715 determine the address it must put in the global offset table, so
5716 both the dynamic object and the regular object will refer to the
5717 same memory location for the variable. */
5bd4f169 5718
04c9666a
AM		 5719 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5720 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5721 runtime process image. We need to remember the offset into the
5722 .rela.bss section we are going to use. */
5723 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5724 {
eea6121a 5725 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5726 h->needs_copy = 1;
5bd4f169
AM		 5727 }
5728
5729 /* We need to figure out the alignment required for this symbol. I
5730 have no idea how ELF linkers handle this. */
5731 power_of_two = bfd_log2 (h->size);
5732 if (power_of_two > 4)
5733 power_of_two = 4;
5734
5735 /* Apply the required alignment. */
4ce794b7 5736 s = htab->dynbss;
eea6121a 5737 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5738 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5739 {
65f38f15 5740 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5741 return FALSE;
5bd4f169
AM		 5742 }
5743
5744 /* Define the symbol as being at this point in the section. */
5745 h->root.u.def.section = s;
eea6121a 5746 h->root.u.def.value = s->size;
5bd4f169
AM		 5747
5748 /* Increment the section size to make room for the symbol. */
eea6121a 5749 s->size += h->size;
5bd4f169 5750
b34976b6 5751 return TRUE;
5bd4f169
AM		 5752}
5753
e86ce104
AM		 5754/* If given a function descriptor symbol, hide both the function code
5755 sym and the descriptor. */
5756static void
4ce794b7
AM		 5757ppc64_elf_hide_symbol (struct bfd_link_info *info,
5758 struct elf_link_hash_entry *h,
5759 bfd_boolean force_local)
e86ce104 5760{
34814b9f 5761 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5762 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5763
34814b9f
AM		 5764 eh = (struct ppc_link_hash_entry *) h;
5765 if (eh->is_func_descriptor)
e86ce104 5766 {
34814b9f 5767 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5768
721956f4 5769 if (fh == NULL)
d1329ca3
AM		 5770 {
5771 const char *p, *q;
5772 struct ppc_link_hash_table *htab;
5773 char save;
5774
5775 /* We aren't supposed to use alloca in BFD because on
5776 systems which do not have alloca the version in libiberty
5777 calls xmalloc, which might cause the program to crash
5778 when it runs out of memory. This function doesn't have a
5779 return status, so there's no way to gracefully return an
5780 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5781 accessed; It's either a string in an ELF string table,
5782 or allocated in an objalloc structure. */
d1329ca3 5783
34814b9f 5784 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5785 save = *p;
5786 *(char *) p = '.';
5787 htab = ppc_hash_table (info);
34814b9f
AM		 5788 fh = (struct ppc_link_hash_entry *)
5789 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5790 *(char *) p = save;
5791
5792 /* Unfortunately, if it so happens that the string we were
5793 looking for was allocated immediately before this string,
5794 then we overwrote the string terminator. That's the only
5795 reason the lookup should fail. */
5796 if (fh == NULL)
5797 {
34814b9f
AM		 5798 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5799 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5800 --q, --p;
34814b9f
AM		 5801 if (q < eh->elf.root.root.string && *p == '.')
5802 fh = (struct ppc_link_hash_entry *)
5803 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5804 }
5805 if (fh != NULL)
5806 {
34814b9f
AM		 5807 eh->oh = fh;
5808 fh->oh = eh;
d1329ca3
AM		 5809 }
5810 }
e86ce104 5811 if (fh != NULL)
34814b9f 5812 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5813 }
5814}
5815
411e1bfb 5816static bfd_boolean
8843416a
AM		 5817get_sym_h (struct elf_link_hash_entry **hp,
5818 Elf_Internal_Sym **symp,
5819 asection **symsecp,
5820 char **tls_maskp,
5821 Elf_Internal_Sym **locsymsp,
5822 unsigned long r_symndx,
5823 bfd *ibfd)
411e1bfb
AM		 5824{
5825 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5826
5827 if (r_symndx >= symtab_hdr->sh_info)
5828 {
5829 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5830 struct elf_link_hash_entry *h;
5831
5832 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5833 while (h->root.type == bfd_link_hash_indirect
5834 || h->root.type == bfd_link_hash_warning)
5835 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5836
5837 if (hp != NULL)
5838 *hp = h;
5839
5840 if (symp != NULL)
5841 *symp = NULL;
5842
5843 if (symsecp != NULL)
5844 {
5845 asection *symsec = NULL;
5846 if (h->root.type == bfd_link_hash_defined
5847 || h->root.type == bfd_link_hash_defweak)
5848 symsec = h->root.u.def.section;
5849 *symsecp = symsec;
5850 }
5851
e7b938ca 5852 if (tls_maskp != NULL)
411e1bfb
AM		 5853 {
5854 struct ppc_link_hash_entry *eh;
5855
5856 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5857 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5858 }
5859 }
5860 else
5861 {
5862 Elf_Internal_Sym *sym;
5863 Elf_Internal_Sym *locsyms = *locsymsp;
5864
5865 if (locsyms == NULL)
5866 {
5867 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5868 if (locsyms == NULL)
5869 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5870 symtab_hdr->sh_info,
5871 0, NULL, NULL, NULL);
5872 if (locsyms == NULL)
5873 return FALSE;
5874 *locsymsp = locsyms;
5875 }
5876 sym = locsyms + r_symndx;
5877
5878 if (hp != NULL)
5879 *hp = NULL;
5880
5881 if (symp != NULL)
5882 *symp = sym;
5883
5884 if (symsecp != NULL)
5885 {
5886 asection *symsec = NULL;
5887 if ((sym->st_shndx != SHN_UNDEF
5888 && sym->st_shndx < SHN_LORESERVE)
5889 || sym->st_shndx > SHN_HIRESERVE)
5890 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5891 *symsecp = symsec;
5892 }
5893
e7b938ca 5894 if (tls_maskp != NULL)
411e1bfb
AM		 5895 {
5896 struct got_entry **lgot_ents;
e7b938ca 5897 char *tls_mask;
411e1bfb 5898
e7b938ca 5899 tls_mask = NULL;
411e1bfb
AM		 5900 lgot_ents = elf_local_got_ents (ibfd);
5901 if (lgot_ents != NULL)
5902 {
e7b938ca
AM		 5903 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5904 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5905 }
e7b938ca 5906 *tls_maskp = tls_mask;
411e1bfb
AM		 5907 }
5908 }
5909 return TRUE;
5910}
5911
e7b938ca 5912/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5913 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5914 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5915
5916static int
0d4792f7
AM		 5917get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5918 Elf_Internal_Sym **locsymsp,
4ce794b7 5919 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5920{
5921 unsigned long r_symndx;
0d4792f7 5922 int next_r;
411e1bfb
AM		 5923 struct elf_link_hash_entry *h;
5924 Elf_Internal_Sym *sym;
5925 asection *sec;
5926 bfd_vma off;
5927
5928 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5929 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5930 return 0;
411e1bfb 5931
e7b938ca 5932 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5933 || sec == NULL
5934 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5935 return 1;
411e1bfb
AM		 5936
5937 /* Look inside a TOC section too. */
5938 if (h != NULL)
5939 {
5940 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5941 off = h->root.u.def.value;
5942 }
5943 else
5944 off = sym->st_value;
5945 off += rel->r_addend;
5946 BFD_ASSERT (off % 8 == 0);
5947 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5948 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5949 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5950 return 0;
0d4792f7
AM		 5951 if (toc_symndx != NULL)
5952 *toc_symndx = r_symndx;
5953 if ((h == NULL
5954 || ((h->root.type == bfd_link_hash_defined
5955 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5956 && !h->def_dynamic))
0d4792f7
AM		 5957 && (next_r == -1 || next_r == -2))
5958 return 1 - next_r;
951fd09b 5959 return 1;
411e1bfb
AM		 5960}
5961
754021d0 5962/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5963 code for the old ABI, these will already have been done. */
754021d0
AM		 5964
5965static bfd_boolean
5966adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5967{
5968 struct ppc_link_hash_entry *eh;
5969 asection *sym_sec;
5970 long *opd_adjust;
5971
5972 if (h->root.type == bfd_link_hash_indirect)
5973 return TRUE;
5974
5975 if (h->root.type == bfd_link_hash_warning)
5976 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5977
5978 if (h->root.type != bfd_link_hash_defined
5979 && h->root.type != bfd_link_hash_defweak)
5980 return TRUE;
5981
5982 eh = (struct ppc_link_hash_entry *) h;
5983 if (eh->adjust_done)
5984 return TRUE;
5985
5986 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 5987 opd_adjust = get_opd_info (sym_sec);
5988 if (opd_adjust != NULL)
754021d0 5989 {
3f764659 5990 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 5991 if (adjust == -1)
5992 {
5993 /* This entry has been deleted. */
433817dd 5994 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
81688140
AM		 5995 if (dsec == NULL)
5996 {
5997 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5998 if (elf_discarded_section (dsec))
5999 {
433817dd 6000 ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
81688140
AM		 6001 break;
6002 }
6003 }
4025353c 6004 eh->elf.root.u.def.value = 0;
81688140 6005 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6006 }
6007 else
6008 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6009 eh->adjust_done = 1;
6010 }
6011 return TRUE;
6012}
6013
8c1d1bb8
AM		 6014/* Handles decrementing dynamic reloc counts for the reloc specified by
6015 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6016 have already been determined. */
6017
6018static bfd_boolean
6019dec_dynrel_count (bfd_vma r_info,
6020 asection *sec,
6021 struct bfd_link_info *info,
6022 Elf_Internal_Sym **local_syms,
6023 struct elf_link_hash_entry *h,
6024 asection *sym_sec)
6025{
6026 enum elf_ppc64_reloc_type r_type;
6027 struct ppc_dyn_relocs *p;
6028 struct ppc_dyn_relocs **pp;
6029
6030 /* Can this reloc be dynamic? This switch, and later tests here
6031 should be kept in sync with the code in check_relocs. */
6032 r_type = ELF64_R_TYPE (r_info);
6033 switch (r_type)
6034 {
6035 default:
6036 return TRUE;
6037
6038 case R_PPC64_TPREL16:
6039 case R_PPC64_TPREL16_LO:
6040 case R_PPC64_TPREL16_HI:
6041 case R_PPC64_TPREL16_HA:
6042 case R_PPC64_TPREL16_DS:
6043 case R_PPC64_TPREL16_LO_DS:
6044 case R_PPC64_TPREL16_HIGHER:
6045 case R_PPC64_TPREL16_HIGHERA:
6046 case R_PPC64_TPREL16_HIGHEST:
6047 case R_PPC64_TPREL16_HIGHESTA:
6048 if (!info->shared)
6049 return TRUE;
6050
6051 case R_PPC64_TPREL64:
6052 case R_PPC64_DTPMOD64:
6053 case R_PPC64_DTPREL64:
6054 case R_PPC64_ADDR64:
6055 case R_PPC64_REL30:
6056 case R_PPC64_REL32:
6057 case R_PPC64_REL64:
6058 case R_PPC64_ADDR14:
6059 case R_PPC64_ADDR14_BRNTAKEN:
6060 case R_PPC64_ADDR14_BRTAKEN:
6061 case R_PPC64_ADDR16:
6062 case R_PPC64_ADDR16_DS:
6063 case R_PPC64_ADDR16_HA:
6064 case R_PPC64_ADDR16_HI:
6065 case R_PPC64_ADDR16_HIGHER:
6066 case R_PPC64_ADDR16_HIGHERA:
6067 case R_PPC64_ADDR16_HIGHEST:
6068 case R_PPC64_ADDR16_HIGHESTA:
6069 case R_PPC64_ADDR16_LO:
6070 case R_PPC64_ADDR16_LO_DS:
6071 case R_PPC64_ADDR24:
6072 case R_PPC64_ADDR32:
6073 case R_PPC64_UADDR16:
6074 case R_PPC64_UADDR32:
6075 case R_PPC64_UADDR64:
6076 case R_PPC64_TOC:
6077 break;
6078 }
6079
6080 if (local_syms != NULL)
6081 {
6082 unsigned long r_symndx;
6083 Elf_Internal_Sym *sym;
6084 bfd *ibfd = sec->owner;
6085
6086 r_symndx = ELF64_R_SYM (r_info);
6087 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6088 return FALSE;
6089 }
6090
6091 if ((info->shared
6092 && (MUST_BE_DYN_RELOC (r_type)
6093 || (h != NULL
6094 && (!info->symbolic
6095 || h->root.type == bfd_link_hash_defweak
6096 || !h->def_regular))))
6097 || (ELIMINATE_COPY_RELOCS
6098 && !info->shared
6099 && h != NULL
6100 && (h->root.type == bfd_link_hash_defweak
6101 || !h->def_regular)))
6102 ;
6103 else
6104 return TRUE;
6105
6106 if (h != NULL)
6107 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6108 else if (sym_sec != NULL)
6109 pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel;
6110 else
6111 pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel;
6112
6113 while ((p = *pp) != NULL)
6114 {
6115 if (p->sec == sec)
6116 {
6117 if (!MUST_BE_DYN_RELOC (r_type))
6118 p->pc_count -= 1;
6119 p->count -= 1;
6120 if (p->count == 0)
6121 *pp = p->next;
6122 return TRUE;
6123 }
6124 pp = &p->next;
6125 }
6126
6127 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6128 sec->owner, sec);
6129 bfd_set_error (bfd_error_bad_value);
6130 return FALSE;
6131}
6132
754021d0
AM		 6133/* Remove unused Official Procedure Descriptor entries. Currently we
6134 only remove those associated with functions in discarded link-once
6135 sections, or weakly defined functions that have been overridden. It
6136 would be possible to remove many more entries for statically linked
6137 applications. */
6138
b34976b6 6139bfd_boolean
3f764659 6140ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6141 bfd_boolean no_opd_opt,
3f764659 6142 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6143{
6144 bfd *ibfd;
754021d0 6145 bfd_boolean some_edited = FALSE;
3f764659 6146 asection *need_pad = NULL;
1e2f5b6e 6147
411e1bfb 6148 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6149 {
6150 asection *sec;
6151 Elf_Internal_Rela *relstart, *rel, *relend;
6152 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6153 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6154 struct elf_link_hash_entry **sym_hashes;
6155 bfd_vma offset;
d6fe2dc1 6156 bfd_size_type amt;
4025353c 6157 long *opd_adjust;
3f764659
JJ		 6158 bfd_boolean need_edit, add_aux_fields;
6159 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6160
6161 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6162 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6163 continue;
6164
3f764659 6165 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6166 opd_adjust = get_opd_info (sec);
6167 if (opd_adjust == NULL)
d6fe2dc1 6168 {
4b85d634
AM		 6169 /* check_relocs hasn't been called. Must be a ld -r link
6170 or --just-symbols object. */
b4f4e59f 6171 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM		 6172 if (opd_adjust == NULL)
6173 return FALSE;
4025353c 6174 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 6175 }
4025353c 6176 memset (opd_adjust, 0, amt);
1e2f5b6e 6177
b4f4e59f
AM		 6178 if (no_opd_opt)
6179 continue;
6180
4b85d634
AM		 6181 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6182 continue;
6183
1e2f5b6e
AM		 6184 if (sec->output_section == bfd_abs_section_ptr)
6185 continue;
6186
6187 /* Look through the section relocs. */
6188 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6189 continue;
6190
6cdc0ccc 6191 local_syms = NULL;
1e2f5b6e
AM		 6192 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6193 sym_hashes = elf_sym_hashes (ibfd);
6194
6195 /* Read the relocations. */
4ce794b7 6196 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6197 info->keep_memory);
1e2f5b6e 6198 if (relstart == NULL)
b34976b6 6199 return FALSE;
1e2f5b6e
AM		 6200
6201 /* First run through the relocs to check they are sane, and to
6202 determine whether we need to edit this opd section. */
b34976b6 6203 need_edit = FALSE;
3f764659 6204 need_pad = sec;
1e2f5b6e
AM		 6205 offset = 0;
6206 relend = relstart + sec->reloc_count;
50bc7936 6207 for (rel = relstart; rel < relend; )
1e2f5b6e 6208 {
04c9666a 6209 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6210 unsigned long r_symndx;
6211 asection *sym_sec;
6212 struct elf_link_hash_entry *h;
6213 Elf_Internal_Sym *sym;
6214
3f764659 6215 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6216 only interested in the reloc pointing to a function entry
6217 point. */
50bc7936
AM		 6218 if (rel->r_offset != offset
6219 || rel + 1 >= relend
6220 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6221 {
6222 /* If someone messes with .opd alignment then after a
6223 "ld -r" we might have padding in the middle of .opd.
6224 Also, there's nothing to prevent someone putting
6225 something silly in .opd with the assembler. No .opd
b34976b6 6226 optimization for them! */
3f764659 6227 broken_opd:
1e2f5b6e 6228 (*_bfd_error_handler)
d003868e 6229 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6230 need_edit = FALSE;
1e2f5b6e
AM		 6231 break;
6232 }
6233
50bc7936
AM		 6234 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6235 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6236 {
6237 (*_bfd_error_handler)
d003868e
AM		 6238 (_("%B: unexpected reloc type %u in .opd section"),
6239 ibfd, r_type);
50bc7936
AM		 6240 need_edit = FALSE;
6241 break;
6242 }
6243
1e2f5b6e 6244 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6245 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6246 r_symndx, ibfd))
50bc7936 6247 goto error_ret;
1e2f5b6e
AM		 6248
6249 if (sym_sec == NULL || sym_sec->owner == NULL)
6250 {
411e1bfb
AM		 6251 const char *sym_name;
6252 if (h != NULL)
6253 sym_name = h->root.root.string;
6254 else
26c61ae5
L		 6255 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6256 sym_sec);
411e1bfb 6257
1e2f5b6e 6258 (*_bfd_error_handler)
d003868e
AM		 6259 (_("%B: undefined sym `%s' in .opd section"),
6260 ibfd, sym_name);
b34976b6 6261 need_edit = FALSE;
1e2f5b6e
AM		 6262 break;
6263 }
6264
51020317
AM		 6265 /* opd entries are always for functions defined in the
6266 current input bfd. If the symbol isn't defined in the
6267 input bfd, then we won't be using the function in this
6268 bfd; It must be defined in a linkonce section in another
6269 bfd, or is weak. It's also possible that we are
6270 discarding the function due to a linker script /DISCARD/,
6271 which we test for via the output_section. */
6272 if (sym_sec->owner != ibfd
6273 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6274 need_edit = TRUE;
1e2f5b6e 6275
50bc7936 6276 rel += 2;
3f764659
JJ		 6277 if (rel == relend
6278 || (rel + 1 == relend && rel->r_offset == offset + 16))
6279 {
6280 if (sec->size == offset + 24)
6281 {
6282 need_pad = NULL;
6283 break;
6284 }
6285 if (rel == relend && sec->size == offset + 16)
6286 {
6287 cnt_16b++;
6288 break;
6289 }
6290 goto broken_opd;
6291 }
6292
6293 if (rel->r_offset == offset + 24)
6294 offset += 24;
6295 else if (rel->r_offset != offset + 16)
6296 goto broken_opd;
6297 else if (rel + 1 < relend
6298 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6299 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6300 {
6301 offset += 16;
6302 cnt_16b++;
6303 }
6304 else if (rel + 2 < relend
6305 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6306 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6307 {
6308 offset += 24;
6309 rel += 1;
6310 }
6311 else
6312 goto broken_opd;
1e2f5b6e
AM		 6313 }
6314
3f764659
JJ		 6315 add_aux_fields = non_overlapping && cnt_16b > 0;
6316
6317 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6318 {
6319 Elf_Internal_Rela *write_rel;
6320 bfd_byte *rptr, *wptr;
3f764659 6321 bfd_byte *new_contents = NULL;
b34976b6 6322 bfd_boolean skip;
3f764659 6323 long opd_ent_size;
1e2f5b6e
AM		 6324
6325 /* This seems a waste of time as input .opd sections are all
6326 zeros as generated by gcc, but I suppose there's no reason
6327 this will always be so. We might start putting something in
6328 the third word of .opd entries. */
6329 if ((sec->flags & SEC_IN_MEMORY) == 0)
6330 {
eea6121a
AM		 6331 bfd_byte *loc;
6332 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6333 {
eea6121a
AM		 6334 if (loc != NULL)
6335 free (loc);
50bc7936 6336 error_ret:
6cdc0ccc
AM		 6337 if (local_syms != NULL
6338 && symtab_hdr->contents != (unsigned char *) local_syms)
6339 free (local_syms);
6cdc0ccc
AM		 6340 if (elf_section_data (sec)->relocs != relstart)
6341 free (relstart);
b34976b6 6342 return FALSE;
6cdc0ccc 6343 }
1e2f5b6e
AM		 6344 sec->contents = loc;
6345 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6346 }
6347
6348 elf_section_data (sec)->relocs = relstart;
6349
3f764659 6350 new_contents = sec->contents;
3f764659
JJ		 6351 if (add_aux_fields)
6352 {
6353 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6354 if (new_contents == NULL)
6355 return FALSE;
6356 need_pad = FALSE;
3f764659 6357 }
b4f4e59f
AM		 6358 wptr = new_contents;
6359 rptr = sec->contents;
3f764659 6360
1e2f5b6e 6361 write_rel = relstart;
b34976b6 6362 skip = FALSE;
1e2f5b6e 6363 offset = 0;
3f764659 6364 opd_ent_size = 0;
1e2f5b6e
AM		 6365 for (rel = relstart; rel < relend; rel++)
6366 {
50bc7936
AM		 6367 unsigned long r_symndx;
6368 asection *sym_sec;
6369 struct elf_link_hash_entry *h;
6370 Elf_Internal_Sym *sym;
6371
6372 r_symndx = ELF64_R_SYM (rel->r_info);
6373 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6374 r_symndx, ibfd))
50bc7936
AM		 6375 goto error_ret;
6376
1e2f5b6e
AM		 6377 if (rel->r_offset == offset)
6378 {
50bc7936 6379 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6380
6381 /* See if the .opd entry is full 24 byte or
6382 16 byte (with fd_aux entry overlapped with next
6383 fd_func). */
6384 opd_ent_size = 24;
6385 if ((rel + 2 == relend && sec->size == offset + 16)
6386 || (rel + 3 < relend
6387 && rel[2].r_offset == offset + 16
6388 && rel[3].r_offset == offset + 24
6389 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6390 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6391 opd_ent_size = 16;
6392
4025353c
AM		 6393 if (h != NULL
6394 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6395 {
6396 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6397 ppc_hash_table (info));
6398 if (fdh != NULL
6399 && fdh->elf.root.type != bfd_link_hash_defined
6400 && fdh->elf.root.type != bfd_link_hash_defweak)
6401 fdh = NULL;
6402 }
1e2f5b6e 6403
51020317
AM		 6404 skip = (sym_sec->owner != ibfd
6405 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6406 if (skip)
6407 {
4025353c 6408 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6409 {
6410 /* Arrange for the function descriptor sym
6411 to be dropped. */
d6fe2dc1
AM		 6412 fdh->elf.root.u.def.value = 0;
6413 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6414 }
3f764659 6415 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6416 }
6417 else
1e2f5b6e
AM		 6418 {
6419 /* We'll be keeping this opd entry. */
6420
4025353c 6421 if (fdh != NULL)
1e2f5b6e 6422 {
754021d0
AM		 6423 /* Redefine the function descriptor symbol to
6424 this location in the opd section. It is
6425 necessary to update the value here rather
6426 than using an array of adjustments as we do
6427 for local symbols, because various places
6428 in the generic ELF code use the value
6429 stored in u.def.value. */
3f764659 6430 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6431 fdh->adjust_done = 1;
1e2f5b6e 6432 }
754021d0
AM		 6433
6434 /* Local syms are a bit tricky. We could
6435 tweak them as they can be cached, but
6436 we'd need to look through the local syms
6437 for the function descriptor sym which we
6438 don't have at the moment. So keep an
6439 array of adjustments. */
3f764659
JJ		 6440 opd_adjust[rel->r_offset / 8]
6441 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6442
6443 if (wptr != rptr)
3f764659
JJ		 6444 memcpy (wptr, rptr, opd_ent_size);
6445 wptr += opd_ent_size;
6446 if (add_aux_fields && opd_ent_size == 16)
6447 {
6448 memset (wptr, '\0', 8);
6449 wptr += 8;
6450 }
1e2f5b6e 6451 }
3f764659
JJ		 6452 rptr += opd_ent_size;
6453 offset += opd_ent_size;
1e2f5b6e
AM		 6454 }
6455
50bc7936
AM		 6456 if (skip)
6457 {
8c1d1bb8
AM		 6458 if (!dec_dynrel_count (rel->r_info, sec, info,
6459 NULL, h, sym_sec))
6460 goto error_ret;
50bc7936
AM		 6461 }
6462 else
1e2f5b6e 6463 {
50bc7936
AM		 6464 /* We need to adjust any reloc offsets to point to the
6465 new opd entries. While we're at it, we may as well
6466 remove redundant relocs. */
3f764659 6467 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6468 if (write_rel != rel)
6469 memcpy (write_rel, rel, sizeof (*rel));
6470 ++write_rel;
6471 }
6472 }
6473
3f764659 6474 sec->size = wptr - new_contents;
1e2f5b6e 6475 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6476 if (add_aux_fields)
6477 {
6478 free (sec->contents);
6479 sec->contents = new_contents;
6480 }
6481
cdcf6e38
AM		 6482 /* Fudge the size too, as this is used later in
6483 elf_bfd_final_link if we are emitting relocs. */
6484 elf_section_data (sec)->rel_hdr.sh_size
6485 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6486 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6487 some_edited = TRUE;
1e2f5b6e 6488 }
6cdc0ccc 6489 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6490 free (relstart);
6cdc0ccc 6491
411e1bfb
AM		 6492 if (local_syms != NULL
6493 && symtab_hdr->contents != (unsigned char *) local_syms)
6494 {
6495 if (!info->keep_memory)
6496 free (local_syms);
6497 else
6498 symtab_hdr->contents = (unsigned char *) local_syms;
6499 }
6500 }
6501
754021d0
AM		 6502 if (some_edited)
6503 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6504
3f764659
JJ		 6505 /* If we are doing a final link and the last .opd entry is just 16 byte
6506 long, add a 8 byte padding after it. */
6507 if (need_pad != NULL && !info->relocatable)
6508 {
6509 bfd_byte *p;
6510
6511 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6512 {
6513 BFD_ASSERT (need_pad->size > 0);
6514
6515 p = bfd_malloc (need_pad->size + 8);
6516 if (p == NULL)
6517 return FALSE;
699733f6 6518
3f764659
JJ		 6519 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6520 p, 0, need_pad->size))
6521 return FALSE;
6522
6523 need_pad->contents = p;
6524 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6525 }
6526 else
6527 {
6528 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6529 if (p == NULL)
6530 return FALSE;
6531
6532 need_pad->contents = p;
6533 }
6534
6535 memset (need_pad->contents + need_pad->size, 0, 8);
6536 need_pad->size += 8;
6537 }
6538
411e1bfb
AM		 6539 return TRUE;
6540}
6541
e1918d23 6542/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6543
e1918d23 6544asection *
4ce794b7 6545ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6546{
411e1bfb
AM		 6547 struct ppc_link_hash_table *htab;
6548
411e1bfb 6549 htab = ppc_hash_table (info);
a48ebf4d
AM		 6550 if (htab->tls_get_addr != NULL)
6551 {
8387904d 6552 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6553
8387904d
AM		 6554 while (h->elf.root.type == bfd_link_hash_indirect
6555 || h->elf.root.type == bfd_link_hash_warning)
6556 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6557
6558 htab->tls_get_addr = h;
8387904d
AM		 6559
6560 if (htab->tls_get_addr_fd == NULL
6561 && h->oh != NULL
c4f68ce3
AM		 6562 && h->oh->is_func_descriptor
6563 && (h->oh->elf.root.type == bfd_link_hash_defined
6564 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6565 htab->tls_get_addr_fd = h->oh;
6566 }
6567
6568 if (htab->tls_get_addr_fd != NULL)
6569 {
6570 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6571
6572 while (h->elf.root.type == bfd_link_hash_indirect
6573 || h->elf.root.type == bfd_link_hash_warning)
6574 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6575
6576 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6577 }
6578
e1918d23 6579 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6580}
411e1bfb 6581
951fd09b
AM		 6582/* Run through all the TLS relocs looking for optimization
6583 opportunities. The linker has been hacked (see ppc64elf.em) to do
6584 a preliminary section layout so that we know the TLS segment
6585 offsets. We can't optimize earlier because some optimizations need
6586 to know the tp offset, and we need to optimize before allocating
6587 dynamic relocations. */
6588
6589bfd_boolean
4ce794b7 6590ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6591{
6592 bfd *ibfd;
6593 asection *sec;
6594 struct ppc_link_hash_table *htab;
6595
1049f94e 6596 if (info->relocatable || info->shared)
411e1bfb
AM		 6597 return TRUE;
6598
951fd09b 6599 htab = ppc_hash_table (info);
411e1bfb
AM		 6600 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6601 {
6602 Elf_Internal_Sym *locsyms = NULL;
6603
6604 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6605 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6606 {
6607 Elf_Internal_Rela *relstart, *rel, *relend;
6608 int expecting_tls_get_addr;
6609
6610 /* Read the relocations. */
4ce794b7 6611 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6612 info->keep_memory);
411e1bfb
AM		 6613 if (relstart == NULL)
6614 return FALSE;
6615
6616 expecting_tls_get_addr = 0;
6617 relend = relstart + sec->reloc_count;
6618 for (rel = relstart; rel < relend; rel++)
6619 {
6620 enum elf_ppc64_reloc_type r_type;
6621 unsigned long r_symndx;
6622 struct elf_link_hash_entry *h;
6623 Elf_Internal_Sym *sym;
6624 asection *sym_sec;
e7b938ca
AM		 6625 char *tls_mask;
6626 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6627 bfd_vma value;
951fd09b 6628 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6629
6630 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6631 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6632 r_symndx, ibfd))
6633 {
6634 err_free_rel:
6635 if (elf_section_data (sec)->relocs != relstart)
6636 free (relstart);
6637 if (locsyms != NULL
6638 && (elf_tdata (ibfd)->symtab_hdr.contents
6639 != (unsigned char *) locsyms))
6640 free (locsyms);
6641 return FALSE;
6642 }
6643
6644 if (h != NULL)
6645 {
6646 if (h->root.type != bfd_link_hash_defined
6647 && h->root.type != bfd_link_hash_defweak)
6648 continue;
6649 value = h->root.u.def.value;
6650 }
6651 else
4025353c
AM		 6652 /* Symbols referenced by TLS relocs must be of type
6653 STT_TLS. So no need for .opd local sym adjust. */
6654 value = sym->st_value;
951fd09b 6655
411e1bfb 6656 ok_tprel = FALSE;
951fd09b
AM		 6657 is_local = FALSE;
6658 if (h == NULL
f5385ebf 6659 || !h->def_dynamic)
411e1bfb 6660 {
951fd09b 6661 is_local = TRUE;
411e1bfb
AM		 6662 value += sym_sec->output_offset;
6663 value += sym_sec->output_section->vma;
e1918d23 6664 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6665 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6666 < (bfd_vma) 1 << 32);
6667 }
6668
4ce794b7 6669 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6670 switch (r_type)
6671 {
6672 case R_PPC64_GOT_TLSLD16:
6673 case R_PPC64_GOT_TLSLD16_LO:
6674 case R_PPC64_GOT_TLSLD16_HI:
6675 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6676 /* These relocs should never be against a symbol
6677 defined in a shared lib. Leave them alone if
6678 that turns out to be the case. */
e717da7e 6679 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6680 if (!is_local)
6681 continue;
6682
951fd09b
AM		 6683 /* LD -> LE */
6684 tls_set = 0;
6685 tls_clear = TLS_LD;
e7b938ca 6686 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6687 expecting_tls_get_addr = 1;
6688 break;
6689
6690 case R_PPC64_GOT_TLSGD16:
6691 case R_PPC64_GOT_TLSGD16_LO:
6692 case R_PPC64_GOT_TLSGD16_HI:
6693 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6694 if (ok_tprel)
411e1bfb
AM		 6695 /* GD -> LE */
6696 tls_set = 0;
6697 else
6698 /* GD -> IE */
951fd09b
AM		 6699 tls_set = TLS_TLS | TLS_TPRELGD;
6700 tls_clear = TLS_GD;
e7b938ca 6701 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6702 expecting_tls_get_addr = 1;
6703 break;
6704
6705 case R_PPC64_GOT_TPREL16_DS:
6706 case R_PPC64_GOT_TPREL16_LO_DS:
6707 case R_PPC64_GOT_TPREL16_HI:
6708 case R_PPC64_GOT_TPREL16_HA:
6709 expecting_tls_get_addr = 0;
6710 if (ok_tprel)
6711 {
6712 /* IE -> LE */
6713 tls_set = 0;
6714 tls_clear = TLS_TPREL;
e7b938ca 6715 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6716 break;
6717 }
6718 else
6719 continue;
6720
6721 case R_PPC64_REL14:
6722 case R_PPC64_REL14_BRTAKEN:
6723 case R_PPC64_REL14_BRNTAKEN:
6724 case R_PPC64_REL24:
6725 if (h != NULL
8387904d
AM		 6726 && (h == &htab->tls_get_addr->elf
6727 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6728 {
6729 if (!expecting_tls_get_addr
6730 && rel != relstart
6731 && ((ELF64_R_TYPE (rel[-1].r_info)
6732 == R_PPC64_TOC16)
6733 || (ELF64_R_TYPE (rel[-1].r_info)
6734 == R_PPC64_TOC16_LO)))
6735 {
6736 /* Check for toc tls entries. */
6737 char *toc_tls;
951fd09b 6738 int retval;
411e1bfb 6739
0d4792f7 6740 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6741 rel - 1, ibfd);
6742 if (retval == 0)
411e1bfb
AM		 6743 goto err_free_rel;
6744 if (toc_tls != NULL)
951fd09b 6745 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6746 }
6747
6748 if (expecting_tls_get_addr)
6749 {
6750 struct plt_entry *ent;
6751 for (ent = h->plt.plist; ent; ent = ent->next)
6752 if (ent->addend == 0)
6753 {
6754 if (ent->plt.refcount > 0)
6755 ent->plt.refcount -= 1;
6756 break;
6757 }
6758 }
6759 }
6760 expecting_tls_get_addr = 0;
6761 continue;
6762
6763 case R_PPC64_TPREL64:
6764 expecting_tls_get_addr = 0;
6765 if (ok_tprel)
6766 {
6767 /* IE -> LE */
6768 tls_set = TLS_EXPLICIT;
6769 tls_clear = TLS_TPREL;
6770 break;
6771 }
6772 else
6773 continue;
6774
6775 case R_PPC64_DTPMOD64:
6776 expecting_tls_get_addr = 0;
951fd09b
AM		 6777 if (rel + 1 < relend
6778 && (rel[1].r_info
6779 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6780 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6781 {
951fd09b 6782 if (ok_tprel)
411e1bfb 6783 /* GD -> LE */
951fd09b 6784 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6785 else
6786 /* GD -> IE */
951fd09b
AM		 6787 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6788 tls_clear = TLS_GD;
411e1bfb
AM		 6789 }
6790 else
6791 {
951fd09b
AM		 6792 if (!is_local)
6793 continue;
6794
6795 /* LD -> LE */
6796 tls_set = TLS_EXPLICIT;
6797 tls_clear = TLS_LD;
411e1bfb
AM		 6798 }
6799 break;
6800
6801 default:
6802 expecting_tls_get_addr = 0;
6803 continue;
6804 }
6805
6806 if ((tls_set & TLS_EXPLICIT) == 0)
6807 {
6808 struct got_entry *ent;
6809
6810 /* Adjust got entry for this reloc. */
6811 if (h != NULL)
6812 ent = h->got.glist;
6813 else
6814 ent = elf_local_got_ents (ibfd)[r_symndx];
6815
6816 for (; ent != NULL; ent = ent->next)
6817 if (ent->addend == rel->r_addend
e717da7e 6818 && ent->owner == ibfd
e7b938ca 6819 && ent->tls_type == tls_type)
411e1bfb
AM		 6820 break;
6821 if (ent == NULL)
6822 abort ();
6823
6824 if (tls_set == 0)
6825 {
6826 /* We managed to get rid of a got entry. */
6827 if (ent->got.refcount > 0)
6828 ent->got.refcount -= 1;
6829 }
411e1bfb 6830 }
8c1d1bb8 6831 else
411e1bfb 6832 {
8c1d1bb8
AM		 6833 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6834 we'll lose one or two dyn relocs. */
6835 if (!dec_dynrel_count (rel->r_info, sec, info,
6836 NULL, h, sym_sec))
6837 return FALSE;
6838
6839 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6840 {
6841 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6842 NULL, h, sym_sec))
6843 return FALSE;
6844 }
411e1bfb
AM		 6845 }
6846
e7b938ca
AM		 6847 *tls_mask |= tls_set;
6848 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6849 }
6850
6851 if (elf_section_data (sec)->relocs != relstart)
6852 free (relstart);
6853 }
6854
6855 if (locsyms != NULL
6856 && (elf_tdata (ibfd)->symtab_hdr.contents
6857 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6858 {
6859 if (!info->keep_memory)
411e1bfb 6860 free (locsyms);
6cdc0ccc 6861 else
411e1bfb 6862 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6863 }
1e2f5b6e 6864 }
b34976b6 6865 return TRUE;
1e2f5b6e 6866}
b34976b6 6867
c5614fa4
AM		 6868/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6869 the values of any global symbols in a toc section that has been
6870 edited. Globals in toc sections should be a rarity, so this function
6871 sets a flag if any are found in toc sections other than the one just
6872 edited, so that futher hash table traversals can be avoided. */
6873
6874struct adjust_toc_info
6875{
6876 asection *toc;
6877 unsigned long *skip;
6878 bfd_boolean global_toc_syms;
6879};
6880
6881static bfd_boolean
6882adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6883{
6884 struct ppc_link_hash_entry *eh;
6885 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6886
6887 if (h->root.type == bfd_link_hash_indirect)
6888 return TRUE;
6889
6890 if (h->root.type == bfd_link_hash_warning)
6891 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6892
6893 if (h->root.type != bfd_link_hash_defined
6894 && h->root.type != bfd_link_hash_defweak)
6895 return TRUE;
6896
6897 eh = (struct ppc_link_hash_entry *) h;
6898 if (eh->adjust_done)
6899 return TRUE;
6900
6901 if (eh->elf.root.u.def.section == toc_inf->toc)
6902 {
6903 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6904 if (skip != (unsigned long) -1)
6905 eh->elf.root.u.def.value -= skip;
6906 else
6907 {
6908 (*_bfd_error_handler)
6909 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6910 eh->elf.root.u.def.section = &bfd_abs_section;
6911 eh->elf.root.u.def.value = 0;
6912 }
6913 eh->adjust_done = 1;
6914 }
6915 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6916 toc_inf->global_toc_syms = TRUE;
6917
6918 return TRUE;
6919}
6920
6921/* Examine all relocs referencing .toc sections in order to remove
6922 unused .toc entries. */
6923
6924bfd_boolean
6925ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6926{
6927 bfd *ibfd;
6928 struct adjust_toc_info toc_inf;
6929
6930 toc_inf.global_toc_syms = TRUE;
6931 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6932 {
6933 asection *toc, *sec;
6934 Elf_Internal_Shdr *symtab_hdr;
6935 Elf_Internal_Sym *local_syms;
6936 struct elf_link_hash_entry **sym_hashes;
92b7a70f 6937 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 6938 unsigned long *skip, *drop;
6939 unsigned char *used;
6940 unsigned char *keep, last, some_unused;
6941
6942 toc = bfd_get_section_by_name (ibfd, ".toc");
6943 if (toc == NULL
92b7a70f 6944 || toc->size == 0
c5614fa4
AM		 6945 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6946 || elf_discarded_section (toc))
6947 continue;
6948
6949 local_syms = NULL;
6950 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6951 sym_hashes = elf_sym_hashes (ibfd);
6952
6953 /* Look at sections dropped from the final link. */
6954 skip = NULL;
6955 relstart = NULL;
6956 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6957 {
6958 if (sec->reloc_count == 0
6959 || !elf_discarded_section (sec)
6960 || get_opd_info (sec)
6961 || (sec->flags & SEC_ALLOC) == 0
6962 || (sec->flags & SEC_DEBUGGING) != 0)
6963 continue;
6964
6965 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6966 if (relstart == NULL)
6967 goto error_ret;
6968
6969 /* Run through the relocs to see which toc entries might be
6970 unused. */
6971 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6972 {
6973 enum elf_ppc64_reloc_type r_type;
6974 unsigned long r_symndx;
6975 asection *sym_sec;
6976 struct elf_link_hash_entry *h;
6977 Elf_Internal_Sym *sym;
6978 bfd_vma val;
6979
6980 r_type = ELF64_R_TYPE (rel->r_info);
6981 switch (r_type)
6982 {
6983 default:
6984 continue;
6985
6986 case R_PPC64_TOC16:
6987 case R_PPC64_TOC16_LO:
6988 case R_PPC64_TOC16_HI:
6989 case R_PPC64_TOC16_HA:
6990 case R_PPC64_TOC16_DS:
6991 case R_PPC64_TOC16_LO_DS:
6992 break;
6993 }
6994
6995 r_symndx = ELF64_R_SYM (rel->r_info);
6996 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6997 r_symndx, ibfd))
6998 goto error_ret;
6999
7000 if (sym_sec != toc)
7001 continue;
7002
7003 if (h != NULL)
7004 val = h->root.u.def.value;
7005 else
7006 val = sym->st_value;
7007 val += rel->r_addend;
7008
7009 if (val >= toc->size)
7010 continue;
7011
7012 /* Anything in the toc ought to be aligned to 8 bytes.
7013 If not, don't mark as unused. */
7014 if (val & 7)
7015 continue;
7016
7017 if (skip == NULL)
7018 {
7019 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7020 if (skip == NULL)
7021 goto error_ret;
7022 }
7023
7024 skip[val >> 3] = 1;
7025 }
7026
7027 if (elf_section_data (sec)->relocs != relstart)
7028 free (relstart);
7029 }
7030
7031 if (skip == NULL)
7032 continue;
7033
7034 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7035 if (used == NULL)
7036 {
7037 error_ret:
7038 if (local_syms != NULL
7039 && symtab_hdr->contents != (unsigned char *) local_syms)
7040 free (local_syms);
7041 if (sec != NULL
7042 && relstart != NULL
7043 && elf_section_data (sec)->relocs != relstart)
7044 free (relstart);
7045 if (skip != NULL)
7046 free (skip);
7047 return FALSE;
7048 }
7049
7050 /* Now check all kept sections that might reference the toc. */
7051 for (sec = ibfd->sections;
7052 sec != NULL;
7053 /* Check the toc itself last. */
7054 sec = (sec == toc ? NULL
7055 : sec->next == toc && sec->next->next ? sec->next->next
7056 : sec->next == NULL ? toc
7057 : sec->next))
7058 {
7059 int repeat;
7060
7061 if (sec->reloc_count == 0
7062 || elf_discarded_section (sec)
7063 || get_opd_info (sec)
7064 || (sec->flags & SEC_ALLOC) == 0
7065 || (sec->flags & SEC_DEBUGGING) != 0)
7066 continue;
7067
7068 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7069 if (relstart == NULL)
7070 goto error_ret;
7071
7072 /* Mark toc entries referenced as used. */
7073 repeat = 0;
7074 do
7075 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7076 {
7077 enum elf_ppc64_reloc_type r_type;
7078 unsigned long r_symndx;
7079 asection *sym_sec;
7080 struct elf_link_hash_entry *h;
7081 Elf_Internal_Sym *sym;
7082 bfd_vma val;
7083
7084 r_type = ELF64_R_TYPE (rel->r_info);
7085 switch (r_type)
7086 {
7087 case R_PPC64_TOC16:
7088 case R_PPC64_TOC16_LO:
7089 case R_PPC64_TOC16_HI:
7090 case R_PPC64_TOC16_HA:
7091 case R_PPC64_TOC16_DS:
7092 case R_PPC64_TOC16_LO_DS:
7093 /* In case we're taking addresses of toc entries. */
7094 case R_PPC64_ADDR64:
7095 break;
7096
7097 default:
7098 continue;
7099 }
7100
7101 r_symndx = ELF64_R_SYM (rel->r_info);
7102 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7103 r_symndx, ibfd))
7104 {
7105 free (used);
7106 goto error_ret;
7107 }
7108
7109 if (sym_sec != toc)
7110 continue;
7111
7112 if (h != NULL)
7113 val = h->root.u.def.value;
7114 else
7115 val = sym->st_value;
7116 val += rel->r_addend;
7117
7118 if (val >= toc->size)
7119 continue;
7120
7121 /* For the toc section, we only mark as used if
7122 this entry itself isn't unused. */
7123 if (sec == toc
7124 && !used[val >> 3]
7125 && (used[rel->r_offset >> 3]
7126 || !skip[rel->r_offset >> 3]))
7127 /* Do all the relocs again, to catch reference
7128 chains. */
7129 repeat = 1;
7130
7131 used[val >> 3] = 1;
7132 }
7133 while (repeat);
7134 }
7135
7136 /* Merge the used and skip arrays. Assume that TOC
7137 doublewords not appearing as either used or unused belong
7138 to to an entry more than one doubleword in size. */
7139 for (drop = skip, keep = used, last = 0, some_unused = 0;
7140 drop < skip + (toc->size + 7) / 8;
7141 ++drop, ++keep)
7142 {
7143 if (*keep)
7144 {
7145 *drop = 0;
7146 last = 0;
7147 }
7148 else if (*drop)
7149 {
7150 some_unused = 1;
7151 last = 1;
7152 }
7153 else
7154 *drop = last;
7155 }
7156
7157 free (used);
7158
7159 if (some_unused)
7160 {
7161 bfd_byte *contents, *src;
7162 unsigned long off;
7163
7164 /* Shuffle the toc contents, and at the same time convert the
7165 skip array from booleans into offsets. */
7166 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7167 goto error_ret;
7168
7169 elf_section_data (toc)->this_hdr.contents = contents;
7170
7171 for (src = contents, off = 0, drop = skip;
7172 src < contents + toc->size;
7173 src += 8, ++drop)
7174 {
7175 if (*drop)
7176 {
7177 *drop = (unsigned long) -1;
7178 off += 8;
7179 }
7180 else if (off != 0)
7181 {
7182 *drop = off;
7183 memcpy (src - off, src, 8);
7184 }
7185 }
7186 toc->rawsize = toc->size;
7187 toc->size = src - contents - off;
7188
92b7a70f
AM		 7189 if (toc->reloc_count != 0)
7190 {
7191 Elf_Internal_Rela *wrel;
7192 bfd_size_type sz;
c5614fa4 7193
92b7a70f
AM		 7194 /* Read toc relocs. */
7195 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7196 TRUE);
7197 if (relstart == NULL)
7198 goto error_ret;
7199
7200 /* Remove unused toc relocs, and adjust those we keep. */
7201 wrel = relstart;
7202 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7203 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7204 {
7205 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7206 wrel->r_info = rel->r_info;
7207 wrel->r_addend = rel->r_addend;
7208 ++wrel;
7209 }
8c1d1bb8
AM		 7210 else if (!dec_dynrel_count (rel->r_info, toc, info,
7211 &local_syms, NULL, NULL))
7212 goto error_ret;
35090471 7213
92b7a70f
AM		 7214 toc->reloc_count = wrel - relstart;
7215 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7216 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7217 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7218 }
c5614fa4
AM		 7219
7220 /* Adjust addends for relocs against the toc section sym. */
7221 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7222 {
7223 if (sec->reloc_count == 0
7224 || elf_discarded_section (sec))
7225 continue;
7226
7227 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7228 TRUE);
7229 if (relstart == NULL)
7230 goto error_ret;
7231
7232 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7233 {
7234 enum elf_ppc64_reloc_type r_type;
7235 unsigned long r_symndx;
7236 asection *sym_sec;
7237 struct elf_link_hash_entry *h;
7238 Elf_Internal_Sym *sym;
7239
7240 r_type = ELF64_R_TYPE (rel->r_info);
7241 switch (r_type)
7242 {
7243 default:
7244 continue;
7245
7246 case R_PPC64_TOC16:
7247 case R_PPC64_TOC16_LO:
7248 case R_PPC64_TOC16_HI:
7249 case R_PPC64_TOC16_HA:
7250 case R_PPC64_TOC16_DS:
7251 case R_PPC64_TOC16_LO_DS:
7252 case R_PPC64_ADDR64:
7253 break;
7254 }
7255
7256 r_symndx = ELF64_R_SYM (rel->r_info);
7257 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7258 r_symndx, ibfd))
7259 goto error_ret;
7260
7261 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7262 continue;
7263
7264 rel->r_addend -= skip[rel->r_addend >> 3];
7265 }
7266 }
7267
7268 /* We shouldn't have local or global symbols defined in the TOC,
7269 but handle them anyway. */
7270 if (local_syms != NULL)
7271 {
7272 Elf_Internal_Sym *sym;
7273
7274 for (sym = local_syms;
7275 sym < local_syms + symtab_hdr->sh_info;
7276 ++sym)
7277 if (sym->st_shndx != SHN_UNDEF
7278 && (sym->st_shndx < SHN_LORESERVE
7279 || sym->st_shndx > SHN_HIRESERVE)
7280 && sym->st_value != 0
7281 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7282 {
7283 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7284 sym->st_value -= skip[sym->st_value >> 3];
7285 else
7286 {
7287 (*_bfd_error_handler)
7288 (_("%s defined in removed toc entry"),
26c61ae5
L		 7289 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7290 NULL));
c5614fa4
AM		 7291 sym->st_value = 0;
7292 sym->st_shndx = SHN_ABS;
7293 }
7294 symtab_hdr->contents = (unsigned char *) local_syms;
7295 }
7296 }
7297
7298 /* Finally, adjust any global syms defined in the toc. */
7299 if (toc_inf.global_toc_syms)
7300 {
7301 toc_inf.toc = toc;
7302 toc_inf.skip = skip;
7303 toc_inf.global_toc_syms = FALSE;
7304 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7305 &toc_inf);
7306 }
7307 }
7308
7309 if (local_syms != NULL
7310 && symtab_hdr->contents != (unsigned char *) local_syms)
7311 {
7312 if (!info->keep_memory)
7313 free (local_syms);
7314 else
7315 symtab_hdr->contents = (unsigned char *) local_syms;
7316 }
7317 free (skip);
7318 }
7319
7320 return TRUE;
7321}
7322
65f38f15
AM		 7323/* Allocate space in .plt, .got and associated reloc sections for
7324 dynamic relocs. */
5bd4f169 7325
b34976b6 7326static bfd_boolean
4ce794b7 7327allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7328{
65f38f15
AM		 7329 struct bfd_link_info *info;
7330 struct ppc_link_hash_table *htab;
5bd4f169 7331 asection *s;
65f38f15
AM		 7332 struct ppc_link_hash_entry *eh;
7333 struct ppc_dyn_relocs *p;
411e1bfb 7334 struct got_entry *gent;
5bd4f169 7335
e92d460e 7336 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7337 return TRUE;
5bd4f169 7338
e92d460e
AM		 7339 if (h->root.type == bfd_link_hash_warning)
7340 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7341
65f38f15
AM		 7342 info = (struct bfd_link_info *) inf;
7343 htab = ppc_hash_table (info);
5bd4f169 7344
65f38f15 7345 if (htab->elf.dynamic_sections_created
411e1bfb 7346 && h->dynindx != -1
9c7a29a3 7347 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7348 {
411e1bfb
AM		 7349 struct plt_entry *pent;
7350 bfd_boolean doneone = FALSE;
7351 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7352 if (pent->plt.refcount > 0)
7353 {
411e1bfb
AM		 7354 /* If this is the first .plt entry, make room for the special
7355 first entry. */
4ce794b7 7356 s = htab->plt;
eea6121a
AM		 7357 if (s->size == 0)
7358 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7359
eea6121a 7360 pent->plt.offset = s->size;
411e1bfb
AM		 7361
7362 /* Make room for this entry. */
eea6121a 7363 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7364
7365 /* Make room for the .glink code. */
4ce794b7 7366 s = htab->glink;
eea6121a
AM		 7367 if (s->size == 0)
7368 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7369 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7370 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7371 s->size += 4;
7372 s->size += 2*4;
411e1bfb
AM		 7373
7374 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7375 s = htab->relplt;
eea6121a 7376 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7377 doneone = TRUE;
7378 }
7379 else
7380 pent->plt.offset = (bfd_vma) -1;
7381 if (!doneone)
65f38f15 7382 {
411e1bfb 7383 h->plt.plist = NULL;
f5385ebf 7384 h->needs_plt = 0;
65f38f15
AM		 7385 }
7386 }
7387 else
7388 {
411e1bfb 7389 h->plt.plist = NULL;
f5385ebf 7390 h->needs_plt = 0;
65f38f15
AM		 7391 }
7392
951fd09b
AM		 7393 eh = (struct ppc_link_hash_entry *) h;
7394 /* Run through the TLS GD got entries first if we're changing them
7395 to TPREL. */
e7b938ca 7396 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7397 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7398 if (gent->got.refcount > 0
7399 && (gent->tls_type & TLS_GD) != 0)
7400 {
7401 /* This was a GD entry that has been converted to TPREL. If
7402 there happens to be a TPREL entry we can use that one. */
7403 struct got_entry *ent;
7404 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7405 if (ent->got.refcount > 0
7406 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7407 && ent->addend == gent->addend
7408 && ent->owner == gent->owner)
951fd09b
AM		 7409 {
7410 gent->got.refcount = 0;
7411 break;
7412 }
7413
7414 /* If not, then we'll be using our own TPREL entry. */
7415 if (gent->got.refcount != 0)
7416 gent->tls_type = TLS_TLS | TLS_TPREL;
7417 }
7418
411e1bfb
AM		 7419 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7420 if (gent->got.refcount > 0)
7421 {
951fd09b
AM		 7422 bfd_boolean dyn;
7423
411e1bfb 7424 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7425 Undefined weak syms won't yet be marked as dynamic,
7426 nor will all TLS symbols. */
411e1bfb 7427 if (h->dynindx == -1
f5385ebf 7428 && !h->forced_local)
411e1bfb 7429 {
c152c796 7430 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7431 return FALSE;
7432 }
65f38f15 7433
d881513a 7434 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7435 && !h->def_dynamic)
411e1bfb 7436 {
e717da7e 7437 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7438 continue;
411e1bfb 7439 }
951fd09b 7440
e717da7e 7441 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7442 gent->got.offset = s->size;
7443 s->size
d881513a 7444 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7445 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7446 if ((info->shared
7447 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7448 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7449 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7450 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7451 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7452 ? 2 * sizeof (Elf64_External_Rela)
7453 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7454 }
7455 else
7456 gent->got.offset = (bfd_vma) -1;
65f38f15 7457
65f38f15 7458 if (eh->dyn_relocs == NULL)
b34976b6 7459 return TRUE;
65f38f15
AM		 7460
7461 /* In the shared -Bsymbolic case, discard space allocated for
7462 dynamic pc-relative relocs against symbols which turn out to be
7463 defined in regular objects. For the normal shared case, discard
7464 space for relocs that have become local due to symbol visibility
7465 changes. */
7466
7467 if (info->shared)
7468 {
9c7a29a3
AM		 7469 /* Relocs that use pc_count are those that appear on a call insn,
7470 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7471 generated via assembly. We want calls to protected symbols to
7472 resolve directly to the function rather than going via the plt.
7473 If people want function pointer comparisons to work as expected
7474 then they should avoid writing weird assembly. */
09695f56 7475 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7476 {
7477 struct ppc_dyn_relocs **pp;
7478
7479 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7480 {
65f38f15
AM		 7481 p->count -= p->pc_count;
7482 p->pc_count = 0;
7483 if (p->count == 0)
7484 *pp = p->next;
7485 else
7486 pp = &p->next;
5bd4f169 7487 }
65f38f15 7488 }
4e795f50
AM		 7489
7490 /* Also discard relocs on undefined weak syms with non-default
7491 visibility. */
7492 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7493 && h->root.type == bfd_link_hash_undefweak)
7494 eh->dyn_relocs = NULL;
65f38f15 7495 }
f4656909 7496 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7497 {
7498 /* For the non-shared case, discard space for relocs against
7499 symbols which turn out to need copy relocs or are not
7500 dynamic. */
7501
f5385ebf
AM		 7502 if (!h->non_got_ref
7503 && h->def_dynamic
7504 && !h->def_regular)
65f38f15
AM		 7505 {
7506 /* Make sure this symbol is output as a dynamic symbol.
7507 Undefined weak syms won't yet be marked as dynamic. */
7508 if (h->dynindx == -1
f5385ebf 7509 && !h->forced_local)
65f38f15 7510 {
c152c796 7511 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7512 return FALSE;
65f38f15
AM		 7513 }
7514
7515 /* If that succeeded, we know we'll be keeping all the
7516 relocs. */
7517 if (h->dynindx != -1)
7518 goto keep;
7519 }
7520
7521 eh->dyn_relocs = NULL;
7522
ec338859 7523 keep: ;
65f38f15
AM		 7524 }
7525
7526 /* Finally, allocate space. */
7527 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7528 {
7529 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7530 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7531 }
7532
b34976b6 7533 return TRUE;
65f38f15
AM		 7534}
7535
7536/* Find any dynamic relocs that apply to read-only sections. */
7537
b34976b6 7538static bfd_boolean
4ce794b7 7539readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7540{
7541 struct ppc_link_hash_entry *eh;
7542 struct ppc_dyn_relocs *p;
7543
e92d460e
AM		 7544 if (h->root.type == bfd_link_hash_warning)
7545 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7546
65f38f15
AM		 7547 eh = (struct ppc_link_hash_entry *) h;
7548 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7549 {
7550 asection *s = p->sec->output_section;
7551
7552 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7553 {
4ce794b7 7554 struct bfd_link_info *info = inf;
65f38f15
AM		 7555
7556 info->flags |= DF_TEXTREL;
7557
7558 /* Not an error, just cut short the traversal. */
b34976b6 7559 return FALSE;
65f38f15
AM		 7560 }
7561 }
b34976b6 7562 return TRUE;
65f38f15
AM		 7563}
7564
7565/* Set the sizes of the dynamic sections. */
7566
b34976b6 7567static bfd_boolean
4ce794b7
AM		 7568ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7569 struct bfd_link_info *info)
65f38f15
AM		 7570{
7571 struct ppc_link_hash_table *htab;
7572 bfd *dynobj;
7573 asection *s;
b34976b6 7574 bfd_boolean relocs;
65f38f15
AM		 7575 bfd *ibfd;
7576
7577 htab = ppc_hash_table (info);
7578 dynobj = htab->elf.dynobj;
7579 if (dynobj == NULL)
7580 abort ();
7581
7582 if (htab->elf.dynamic_sections_created)
7583 {
7584 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7585 if (info->executable)
65f38f15
AM		 7586 {
7587 s = bfd_get_section_by_name (dynobj, ".interp");
7588 if (s == NULL)
7589 abort ();
eea6121a 7590 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7591 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7592 }
7593 }
7594
7595 /* Set up .got offsets for local syms, and space for local dynamic
7596 relocs. */
7597 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7598 {
411e1bfb
AM		 7599 struct got_entry **lgot_ents;
7600 struct got_entry **end_lgot_ents;
e7b938ca 7601 char *lgot_masks;
65f38f15
AM		 7602 bfd_size_type locsymcount;
7603 Elf_Internal_Shdr *symtab_hdr;
7604 asection *srel;
7605
ee75fd95 7606 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7607 continue;
7608
e717da7e
AM		 7609 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7610 {
7611 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7612 ppc64_tlsld_got (ibfd)->offset = s->size;
7613 s->size += 16;
e717da7e
AM		 7614 if (info->shared)
7615 {
7616 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7617 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7618 }
7619 }
7620 else
7621 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7622
65f38f15
AM		 7623 for (s = ibfd->sections; s != NULL; s = s->next)
7624 {
ec338859 7625 struct ppc_dyn_relocs *p;
65f38f15 7626
ec338859
AM		 7627 for (p = *((struct ppc_dyn_relocs **)
7628 &elf_section_data (s)->local_dynrel);
7629 p != NULL;
7630 p = p->next)
65f38f15 7631 {
ec338859
AM		 7632 if (!bfd_is_abs_section (p->sec)
7633 && bfd_is_abs_section (p->sec->output_section))
7634 {
7635 /* Input section has been discarded, either because
7636 it is a copy of a linkonce section or due to
7637 linker script /DISCARD/, so we'll be discarding
7638 the relocs too. */
7639 }
248866a8 7640 else if (p->count != 0)
ec338859
AM		 7641 {
7642 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7643 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7644 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7645 info->flags |= DF_TEXTREL;
ec338859 7646 }
65f38f15
AM		 7647 }
7648 }
7649
411e1bfb
AM		 7650 lgot_ents = elf_local_got_ents (ibfd);
7651 if (!lgot_ents)
65f38f15
AM		 7652 continue;
7653
7654 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7655 locsymcount = symtab_hdr->sh_info;
411e1bfb 7656 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7657 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7658 s = ppc64_elf_tdata (ibfd)->got;
7659 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7660 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7661 {
411e1bfb
AM		 7662 struct got_entry *ent;
7663
7664 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7665 if (ent->got.refcount > 0)
7666 {
e7b938ca 7667 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7668 {
e717da7e 7669 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7670 {
eea6121a
AM		 7671 ppc64_tlsld_got (ibfd)->offset = s->size;
7672 s->size += 16;
411e1bfb 7673 if (info->shared)
eea6121a 7674 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7675 }
e717da7e 7676 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7677 }
7678 else
7679 {
eea6121a 7680 ent->got.offset = s->size;
e7b938ca 7681 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7682 {
eea6121a 7683 s->size += 16;
411e1bfb 7684 if (info->shared)
eea6121a 7685 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7686 }
7687 else
7688 {
eea6121a 7689 s->size += 8;
411e1bfb 7690 if (info->shared)
eea6121a 7691 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7692 }
7693 }
7694 }
7695 else
7696 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7697 }
7698 }
7699
7700 /* Allocate global sym .plt and .got entries, and space for global
7701 sym dynamic relocs. */
4ce794b7 7702 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7703
7704 /* We now have determined the sizes of the various dynamic sections.
7705 Allocate memory for them. */
b34976b6 7706 relocs = FALSE;
65f38f15
AM		 7707 for (s = dynobj->sections; s != NULL; s = s->next)
7708 {
7709 if ((s->flags & SEC_LINKER_CREATED) == 0)
7710 continue;
7711
4ce794b7 7712 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7713 /* These haven't been allocated yet; don't strip. */
7714 continue;
e717da7e
AM		 7715 else if (s == htab->got
7716 || s == htab->plt
4ce794b7 7717 || s == htab->glink)
65f38f15
AM		 7718 {
7719 /* Strip this section if we don't need it; see the
7720 comment below. */
5bd4f169 7721 }
65f38f15 7722 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7723 {
eea6121a 7724 if (s->size == 0)
5bd4f169
AM		 7725 {
7726 /* If we don't need this section, strip it from the
7727 output file. This is mostly to handle .rela.bss and
7728 .rela.plt. We must create both sections in
7729 create_dynamic_sections, because they must be created
7730 before the linker maps input sections to output
7731 sections. The linker does that before
7732 adjust_dynamic_symbol is called, and it is that
7733 function which decides whether anything needs to go
7734 into these sections. */
5bd4f169
AM		 7735 }
7736 else
7737 {
4ce794b7 7738 if (s != htab->relplt)
b34976b6 7739 relocs = TRUE;
5bd4f169
AM		 7740
7741 /* We use the reloc_count field as a counter if we need
7742 to copy relocs into the output file. */
7743 s->reloc_count = 0;
7744 }
7745 }
65f38f15 7746 else
5bd4f169
AM		 7747 {
7748 /* It's not one of our sections, so don't allocate space. */
7749 continue;
7750 }
7751
eea6121a 7752 if (s->size == 0)
5bd4f169 7753 {
8423293d 7754 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 7755 continue;
7756 }
7757
5f333394 7758 /* .plt is in the bss section. We don't initialise it. */
680a3378 7759 if (s == htab->plt)
5f333394
AM		 7760 continue;
7761
65f38f15
AM		 7762 /* Allocate memory for the section contents. We use bfd_zalloc
7763 here in case unused entries are not reclaimed before the
7764 section's contents are written out. This should not happen,
411e1bfb
AM		 7765 but this way if it does we get a R_PPC64_NONE reloc in .rela
7766 sections instead of garbage.
7767 We also rely on the section contents being zero when writing
7768 the GOT. */
eea6121a 7769 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7770 if (s->contents == NULL)
b34976b6 7771 return FALSE;
5bd4f169
AM		 7772 }
7773
e717da7e
AM		 7774 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7775 {
ee75fd95 7776 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7777 continue;
7778
e717da7e
AM		 7779 s = ppc64_elf_tdata (ibfd)->got;
7780 if (s != NULL && s != htab->got)
7781 {
eea6121a 7782 if (s->size == 0)
8423293d 7783 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7784 else
7785 {
eea6121a 7786 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7787 if (s->contents == NULL)
7788 return FALSE;
7789 }
7790 }
7791 s = ppc64_elf_tdata (ibfd)->relgot;
7792 if (s != NULL)
7793 {
eea6121a 7794 if (s->size == 0)
8423293d 7795 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7796 else
7797 {
eea6121a 7798 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7799 if (s->contents == NULL)
7800 return FALSE;
7801 relocs = TRUE;
7802 s->reloc_count = 0;
7803 }
7804 }
7805 }
7806
e86ce104 7807 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7808 {
7809 /* Add some entries to the .dynamic section. We fill in the
7810 values later, in ppc64_elf_finish_dynamic_sections, but we
7811 must add the entries now so that we get the correct size for
7812 the .dynamic section. The DT_DEBUG entry is filled in by the
7813 dynamic linker and used by the debugger. */
dc810e39 7814#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7815 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7816
36af4a4e 7817 if (info->executable)
5bd4f169 7818 {
dc810e39 7819 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7820 return FALSE;
5bd4f169
AM		 7821 }
7822
eea6121a 7823 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7824 {
dc810e39
AM		 7825 if (!add_dynamic_entry (DT_PLTGOT, 0)
7826 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7827 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7828 || !add_dynamic_entry (DT_JMPREL, 0)
7829 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7830 return FALSE;
5bd4f169
AM		 7831 }
7832
19397422
AM		 7833 if (NO_OPD_RELOCS)
7834 {
7835 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7836 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7837 return FALSE;
19397422
AM		 7838 }
7839
5bd4f169
AM		 7840 if (relocs)
7841 {
dc810e39
AM		 7842 if (!add_dynamic_entry (DT_RELA, 0)
7843 || !add_dynamic_entry (DT_RELASZ, 0)
7844 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7845 return FALSE;
5bd4f169 7846
65f38f15
AM		 7847 /* If any dynamic relocs apply to a read-only section,
7848 then we need a DT_TEXTREL entry. */
248866a8 7849 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7850 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7851
65f38f15 7852 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7853 {
65f38f15 7854 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7855 return FALSE;
5bd4f169 7856 }
5bd4f169 7857 }
5bd4f169 7858 }
65f38f15 7859#undef add_dynamic_entry
5bd4f169 7860
b34976b6 7861 return TRUE;
5bd4f169
AM		 7862}
7863
721956f4 7864/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7865
4ce794b7
AM		 7866static inline enum ppc_stub_type
7867ppc_type_of_stub (asection *input_sec,
7868 const Elf_Internal_Rela *rel,
7869 struct ppc_link_hash_entry **hash,
7870 bfd_vma destination)
5bd4f169 7871{
721956f4
AM		 7872 struct ppc_link_hash_entry *h = *hash;
7873 bfd_vma location;
7874 bfd_vma branch_offset;
7875 bfd_vma max_branch_offset;
4ce794b7 7876 enum elf_ppc64_reloc_type r_type;
5bd4f169 7877
721956f4
AM		 7878 if (h != NULL)
7879 {
7880 if (h->oh != NULL
8387904d
AM		 7881 && h->oh->is_func_descriptor)
7882 h = h->oh;
7883
7884 if (h->elf.dynindx != -1)
5bd4f169 7885 {
411e1bfb 7886 struct plt_entry *ent;
8387904d
AM		 7887
7888 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7889 if (ent->addend == rel->r_addend
7890 && ent->plt.offset != (bfd_vma) -1)
7891 {
8387904d 7892 *hash = h;
411e1bfb
AM		 7893 return ppc_stub_plt_call;
7894 }
5bd4f169
AM		 7895 }
7896
ee7de3e6
AM		 7897 if (!(h->elf.root.type == bfd_link_hash_defined
7898 || h->elf.root.type == bfd_link_hash_defweak)
7899 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7900 return ppc_stub_none;
5d1634d7 7901 }
5d1634d7 7902
721956f4
AM		 7903 /* Determine where the call point is. */
7904 location = (input_sec->output_offset
7905 + input_sec->output_section->vma
7906 + rel->r_offset);
5d1634d7 7907
721956f4
AM		 7908 branch_offset = destination - location;
7909 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7910
721956f4
AM		 7911 /* Determine if a long branch stub is needed. */
7912 max_branch_offset = 1 << 25;
4ce794b7 7913 if (r_type != R_PPC64_REL24)
721956f4 7914 max_branch_offset = 1 << 15;
5d1634d7 7915
721956f4
AM		 7916 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7917 /* We need a stub. Figure out whether a long_branch or plt_branch
7918 is needed later. */
7919 return ppc_stub_long_branch;
5d1634d7 7920
721956f4 7921 return ppc_stub_none;
5d1634d7
AM		 7922}
7923
7924/* Build a .plt call stub. */
7925
4ce794b7
AM		 7926static inline bfd_byte *
7927build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7928{
7929#define PPC_LO(v) ((v) & 0xffff)
7930#define PPC_HI(v) (((v) >> 16) & 0xffff)
7931#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7932
5d1634d7 7933 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7934 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7935 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7936 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7937 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7938 offset += 8;
7939 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7940 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7941 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7942 offset += 8;
7943 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7944 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7945 bfd_put_32 (obfd, BCTR, p), p += 4;
7946 return p;
7947}
7948
b34976b6 7949static bfd_boolean
4ce794b7 7950ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7951{
721956f4
AM		 7952 struct ppc_stub_hash_entry *stub_entry;
7953 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7954 struct bfd_link_info *info;
7955 struct ppc_link_hash_table *htab;
721956f4
AM		 7956 bfd_byte *loc;
7957 bfd_byte *p;
7958 unsigned int indx;
411e1bfb 7959 struct plt_entry *ent;
ee75fd95 7960 bfd_vma dest, off;
721956f4 7961 int size;
5d1634d7 7962
721956f4
AM		 7963 /* Massage our args to the form they really have. */
7964 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7965 info = in_arg;
5d1634d7 7966
5d1634d7
AM		 7967 htab = ppc_hash_table (info);
7968
721956f4 7969 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7970 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7971 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7972
4ce794b7 7973 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7974 switch (stub_entry->stub_type)
5d1634d7 7975 {
721956f4 7976 case ppc_stub_long_branch:
ad8e1ba5 7977 case ppc_stub_long_branch_r2off:
721956f4 7978 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7979 off = dest = (stub_entry->target_value
7980 + stub_entry->target_section->output_offset
7981 + stub_entry->target_section->output_section->vma);
5d1634d7 7982
721956f4
AM		 7983 /* And this is where we are coming from. */
7984 off -= (stub_entry->stub_offset
97b639ba
AM		 7985 + stub_entry->stub_sec->output_offset
7986 + stub_entry->stub_sec->output_section->vma);
e86ce104 7987
ad8e1ba5
AM		 7988 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7989 size = 4;
7990 else
7991 {
7992 bfd_vma r2off;
7993
7994 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7995 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7996 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7997 loc += 4;
97b639ba 7998 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7999 loc += 4;
97b639ba 8000 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8001 loc += 4;
8002 off -= 12;
8003 size = 16;
8004 }
97b639ba 8005 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 8006
8007 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 8008
8009 if (info->emitrelocations)
8010 {
8011 Elf_Internal_Rela *relocs, *r;
8012 struct bfd_elf_section_data *elfsec_data;
8013
8014 elfsec_data = elf_section_data (stub_entry->stub_sec);
8015 relocs = elfsec_data->relocs;
8016 if (relocs == NULL)
8017 {
8018 bfd_size_type relsize;
8019 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8020 relocs = bfd_alloc (htab->stub_bfd, relsize);
8021 if (relocs == NULL)
8022 return FALSE;
8023 elfsec_data->relocs = relocs;
8024 elfsec_data->rel_hdr.sh_size = relsize;
8025 elfsec_data->rel_hdr.sh_entsize = 24;
8026 stub_entry->stub_sec->reloc_count = 0;
8027 }
8028 r = relocs + stub_entry->stub_sec->reloc_count;
8029 stub_entry->stub_sec->reloc_count += 1;
8030 r->r_offset = loc - stub_entry->stub_sec->contents;
8031 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8032 r->r_addend = dest;
8033 if (stub_entry->h != NULL)
8034 {
8035 struct elf_link_hash_entry **hashes;
8036 unsigned long symndx;
8037 struct ppc_link_hash_entry *h;
8038
8039 hashes = elf_sym_hashes (htab->stub_bfd);
8040 if (hashes == NULL)
8041 {
8042 bfd_size_type hsize;
8043
8044 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8045 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8046 if (hashes == NULL)
8047 return FALSE;
8048 elf_sym_hashes (htab->stub_bfd) = hashes;
8049 htab->stub_globals = 1;
8050 }
8051 symndx = htab->stub_globals++;
8052 h = stub_entry->h;
8053 hashes[symndx] = &h->elf;
8054 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8055 if (h->oh != NULL && h->oh->is_func)
8056 h = h->oh;
8057 if (h->elf.root.u.def.section != stub_entry->target_section)
8058 /* H is an opd symbol. The addend must be zero. */
8059 r->r_addend = 0;
8060 else
8061 {
8062 off = (h->elf.root.u.def.value
8063 + h->elf.root.u.def.section->output_offset
8064 + h->elf.root.u.def.section->output_section->vma);
8065 r->r_addend -= off;
8066 }
8067 }
8068 }
721956f4 8069 break;
e86ce104 8070
721956f4 8071 case ppc_stub_plt_branch:
ad8e1ba5 8072 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8073 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8074 stub_entry->root.string + 9,
b34976b6 8075 FALSE, FALSE);
721956f4
AM		 8076 if (br_entry == NULL)
8077 {
8078 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8079 stub_entry->root.string + 9);
b34976b6
AM		 8080 htab->stub_error = TRUE;
8081 return FALSE;
721956f4
AM		 8082 }
8083
8084 off = (stub_entry->target_value
8085 + stub_entry->target_section->output_offset
8086 + stub_entry->target_section->output_section->vma);
8087
4ce794b7
AM		 8088 bfd_put_64 (htab->brlt->owner, off,
8089 htab->brlt->contents + br_entry->offset);
721956f4 8090
ee75fd95 8091 if (htab->relbrlt != NULL)
721956f4
AM		 8092 {
8093 /* Create a reloc for the branch lookup table entry. */
8094 Elf_Internal_Rela rela;
ad8e1ba5 8095 bfd_byte *rl;
5d1634d7 8096
721956f4 8097 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8098 + htab->brlt->output_offset
8099 + htab->brlt->output_section->vma);
721956f4
AM		 8100 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8101 rela.r_addend = off;
8102
4ce794b7
AM		 8103 rl = htab->relbrlt->contents;
8104 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8105 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 8106 }
8107
8108 off = (br_entry->offset
4ce794b7
AM		 8109 + htab->brlt->output_offset
8110 + htab->brlt->output_section->vma
8111 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8112 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8113
ad8e1ba5 8114 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8115 {
8116 (*_bfd_error_handler)
e86ce104 8117 (_("linkage table error against `%s'"),
721956f4 8118 stub_entry->root.string);
5d1634d7 8119 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8120 htab->stub_error = TRUE;
8121 return FALSE;
5d1634d7 8122 }
41bd81ab 8123
721956f4 8124 indx = off;
ad8e1ba5
AM		 8125 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8126 {
97b639ba 8127 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8128 loc += 4;
97b639ba 8129 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 8130 size = 16;
8131 }
8132 else
8133 {
8134 bfd_vma r2off;
8135
8136 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8137 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8138 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8139 loc += 4;
97b639ba 8140 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8141 loc += 4;
97b639ba 8142 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8143 loc += 4;
97b639ba 8144 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8145 loc += 4;
97b639ba 8146 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8147 size = 28;
8148 }
8149 loc += 4;
97b639ba 8150 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8151 loc += 4;
97b639ba 8152 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8153 break;
5d1634d7 8154
721956f4 8155 case ppc_stub_plt_call:
c862ae31
AM		 8156 /* Do the best we can for shared libraries built without
8157 exporting ".foo" for each "foo". This can happen when symbol
8158 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8159 if (stub_entry->h->oh != NULL
8160 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8161 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8162 {
8163 /* Point the symbol at the stub. There may be multiple stubs,
8164 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8165 defined somewhere. Maybe defining the symbol in the stub
8166 section is a silly idea. If we didn't do this, htab->top_id
8167 could disappear. */
34814b9f
AM		 8168 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8169 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8170 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8171 }
8172
721956f4 8173 /* Now build the stub. */
411e1bfb
AM		 8174 off = (bfd_vma) -1;
8175 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8176 if (ent->addend == stub_entry->addend)
8177 {
8178 off = ent->plt.offset;
8179 break;
8180 }
721956f4
AM		 8181 if (off >= (bfd_vma) -2)
8182 abort ();
8183
8184 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8185 off += (htab->plt->output_offset
8186 + htab->plt->output_section->vma
8187 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8188 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8189
ad8e1ba5 8190 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8191 {
8192 (*_bfd_error_handler)
8193 (_("linkage table error against `%s'"),
8194 stub_entry->h->elf.root.root.string);
8195 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8196 htab->stub_error = TRUE;
8197 return FALSE;
721956f4
AM		 8198 }
8199
97b639ba 8200 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8201 size = p - loc;
8202 break;
8203
8204 default:
8205 BFD_FAIL ();
b34976b6 8206 return FALSE;
721956f4
AM		 8207 }
8208
eea6121a 8209 stub_entry->stub_sec->size += size;
97b639ba 8210
ee75fd95 8211 if (htab->emit_stub_syms)
97b639ba
AM		 8212 {
8213 struct elf_link_hash_entry *h;
ee75fd95
AM		 8214 size_t len1, len2;
8215 char *name;
8216 const char *const stub_str[] = { "long_branch",
8217 "long_branch_r2off",
8218 "plt_branch",
8219 "plt_branch_r2off",
8220 "plt_call" };
8221
8222 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8223 len2 = strlen (stub_entry->root.string);
8224 name = bfd_malloc (len1 + len2 + 2);
8225 if (name == NULL)
8226 return FALSE;
8227 memcpy (name, stub_entry->root.string, 9);
8228 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8229 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8230 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8231 if (h == NULL)
8232 return FALSE;
8233 if (h->root.type == bfd_link_hash_new)
8234 {
8235 h->root.type = bfd_link_hash_defined;
8236 h->root.u.def.section = stub_entry->stub_sec;
8237 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8238 h->ref_regular = 1;
8239 h->def_regular = 1;
8240 h->ref_regular_nonweak = 1;
8241 h->forced_local = 1;
8242 h->non_elf = 0;
97b639ba
AM		 8243 }
8244 }
8245
b34976b6 8246 return TRUE;
721956f4
AM		 8247}
8248
8249/* As above, but don't actually build the stub. Just bump offset so
8250 we know stub section sizes, and select plt_branch stubs where
8251 long_branch stubs won't do. */
8252
b34976b6 8253static bfd_boolean
4ce794b7 8254ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8255{
8256 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8257 struct bfd_link_info *info;
721956f4
AM		 8258 struct ppc_link_hash_table *htab;
8259 bfd_vma off;
8260 int size;
8261
8262 /* Massage our args to the form they really have. */
8263 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8264 info = in_arg;
8265
8266 htab = ppc_hash_table (info);
721956f4
AM		 8267
8268 if (stub_entry->stub_type == ppc_stub_plt_call)
8269 {
411e1bfb 8270 struct plt_entry *ent;
58ac9f71 8271 off = (bfd_vma) -1;
411e1bfb
AM		 8272 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8273 if (ent->addend == stub_entry->addend)
8274 {
8275 off = ent->plt.offset & ~(bfd_vma) 1;
8276 break;
8277 }
58ac9f71 8278 if (off >= (bfd_vma) -2)
411e1bfb 8279 abort ();
4ce794b7
AM		 8280 off += (htab->plt->output_offset
8281 + htab->plt->output_section->vma
8282 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8283 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8284
ad8e1ba5 8285 size = PLT_CALL_STUB_SIZE;
4ce794b7 8286 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8287 size += 4;
8288 }
8289 else
8290 {
ad8e1ba5
AM		 8291 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8292 variants. */
721956f4
AM		 8293 off = (stub_entry->target_value
8294 + stub_entry->target_section->output_offset
8295 + stub_entry->target_section->output_section->vma);
eea6121a 8296 off -= (stub_entry->stub_sec->size
721956f4
AM		 8297 + stub_entry->stub_sec->output_offset
8298 + stub_entry->stub_sec->output_section->vma);
8299
ad8e1ba5
AM		 8300 /* Reset the stub type from the plt variant in case we now
8301 can reach with a shorter stub. */
8302 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8303 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8304
8305 size = 4;
8306 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8307 {
8308 off -= 12;
8309 size = 16;
8310 }
8311
8312 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8313 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8314 {
8315 struct ppc_branch_hash_entry *br_entry;
8316
8317 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8318 stub_entry->root.string + 9,
b34976b6 8319 TRUE, FALSE);
721956f4
AM		 8320 if (br_entry == NULL)
8321 {
8322 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8323 stub_entry->root.string + 9);
b34976b6
AM		 8324 htab->stub_error = TRUE;
8325 return FALSE;
721956f4
AM		 8326 }
8327
8328 if (br_entry->iter != htab->stub_iteration)
8329 {
8330 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8331 br_entry->offset = htab->brlt->size;
8332 htab->brlt->size += 8;
63bc6f6c 8333
ee75fd95 8334 if (htab->relbrlt != NULL)
eea6121a 8335 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8336 }
ad8e1ba5
AM		 8337
8338 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8339 size = 16;
ad8e1ba5
AM		 8340 if (stub_entry->stub_type != ppc_stub_plt_branch)
8341 size = 28;
721956f4 8342 }
ee75fd95
AM		 8343
8344 if (info->emitrelocations
8345 && (stub_entry->stub_type == ppc_stub_long_branch
8346 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8347 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8348 }
8349
eea6121a 8350 stub_entry->stub_sec->size += size;
b34976b6 8351 return TRUE;
721956f4
AM		 8352}
8353
8354/* Set up various things so that we can make a list of input sections
8355 for each output section included in the link. Returns -1 on error,
cedb70c5 8356 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8357
8358int
4c52953f
AM		 8359ppc64_elf_setup_section_lists (bfd *output_bfd,
8360 struct bfd_link_info *info,
8361 int no_multi_toc)
721956f4
AM		 8362{
8363 bfd *input_bfd;
734b6cf9 8364 int top_id, top_index, id;
721956f4 8365 asection *section;
734b6cf9 8366 asection **input_list;
721956f4
AM		 8367 bfd_size_type amt;
8368 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8369
4c52953f
AM		 8370 htab->no_multi_toc = no_multi_toc;
8371
4ce794b7 8372 if (htab->brlt == NULL)
721956f4
AM		 8373 return 0;
8374
1e2f5b6e 8375 /* Find the top input section id. */
3d6f9012 8376 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8377 input_bfd != NULL;
8378 input_bfd = input_bfd->link_next)
8379 {
721956f4
AM		 8380 for (section = input_bfd->sections;
8381 section != NULL;
8382 section = section->next)
8383 {
8384 if (top_id < section->id)
8385 top_id = section->id;
8386 }
8387 }
721956f4 8388
8f3bab57 8389 htab->top_id = top_id;
721956f4 8390 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8391 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8392 if (htab->stub_group == NULL)
8393 return -1;
8394
3d6f9012
AM		 8395 /* Set toc_off for com, und, abs and ind sections. */
8396 for (id = 0; id < 3; id++)
8397 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8398
3d6f9012 8399 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8400
8401 /* We can't use output_bfd->section_count here to find the top output
8402 section index as some sections may have been removed, and
8423293d 8403 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8404 for (section = output_bfd->sections, top_index = 0;
8405 section != NULL;
8406 section = section->next)
8407 {
8408 if (top_index < section->index)
8409 top_index = section->index;
8410 }
8411
8412 htab->top_index = top_index;
8413 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8414 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8415 htab->input_list = input_list;
8416 if (input_list == NULL)
8417 return -1;
8418
721956f4
AM		 8419 return 1;
8420}
8421
e717da7e
AM		 8422/* The linker repeatedly calls this function for each TOC input section
8423 and linker generated GOT section. Group input bfds such that the toc
8424 within a group is less than 64k in size. Will break with cute linker
8425 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8426
8427void
4ce794b7 8428ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8429{
8430 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8431
4c52953f
AM		 8432 if (!htab->no_multi_toc)
8433 {
8434 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8435 bfd_vma off = addr - htab->toc_curr;
8436
8437 if (off + isec->size > 0x10000)
8438 htab->toc_curr = addr;
99877b66 8439
4c52953f
AM		 8440 elf_gp (isec->owner) = (htab->toc_curr
8441 - elf_gp (isec->output_section->owner)
8442 + TOC_BASE_OFF);
8443 }
ad8e1ba5
AM		 8444}
8445
8446/* Called after the last call to the above function. */
8447
8448void
4c52953f 8449ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8450{
8451 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8452
4c52953f
AM		 8453 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8454
ad8e1ba5
AM		 8455 /* toc_curr tracks the TOC offset used for code sections below in
8456 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8457 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8458}
8459
9b5ecbd0
AM		 8460/* No toc references were found in ISEC. If the code in ISEC makes no
8461 calls, then there's no need to use toc adjusting stubs when branching
8462 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8463 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8464 needed, and 2 if a cyclical call-graph was found but no other reason
8465 for a stub was detected. If called from the top level, a return of
8466 2 means the same as a return of 0. */
9b5ecbd0
AM		 8467
8468static int
4ce794b7 8469toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8470{
4c52953f
AM		 8471 Elf_Internal_Rela *relstart, *rel;
8472 Elf_Internal_Sym *local_syms;
9b5ecbd0 8473 int ret;
4c52953f 8474 struct ppc_link_hash_table *htab;
9b5ecbd0 8475
772119ce
AM		 8476 /* We know none of our code bearing sections will need toc stubs. */
8477 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8478 return 0;
8479
eea6121a 8480 if (isec->size == 0)
082c50f8
AM		 8481 return 0;
8482
4c52953f
AM		 8483 if (isec->output_section == NULL)
8484 return 0;
8485
9b5ecbd0
AM		 8486 /* Hack for linux kernel. .fixup contains branches, but only back to
8487 the function that hit an exception. */
4c52953f
AM		 8488 if (strcmp (isec->name, ".fixup") == 0)
8489 return 0;
9b5ecbd0 8490
4c52953f
AM		 8491 if (isec->reloc_count == 0)
8492 return 0;
8493
8494 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8495 info->keep_memory);
8496 if (relstart == NULL)
8497 return -1;
8498
8499 /* Look for branches to outside of this section. */
8500 local_syms = NULL;
8501 ret = 0;
8502 htab = ppc_hash_table (info);
8503 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8504 {
4c52953f
AM		 8505 enum elf_ppc64_reloc_type r_type;
8506 unsigned long r_symndx;
8507 struct elf_link_hash_entry *h;
8508 Elf_Internal_Sym *sym;
8509 asection *sym_sec;
8510 long *opd_adjust;
8511 bfd_vma sym_value;
8512 bfd_vma dest;
8513
8514 r_type = ELF64_R_TYPE (rel->r_info);
8515 if (r_type != R_PPC64_REL24
8516 && r_type != R_PPC64_REL14
8517 && r_type != R_PPC64_REL14_BRTAKEN
8518 && r_type != R_PPC64_REL14_BRNTAKEN)
8519 continue;
8520
8521 r_symndx = ELF64_R_SYM (rel->r_info);
8522 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8523 isec->owner))
9b5ecbd0 8524 {
4c52953f
AM		 8525 ret = -1;
8526 break;
9b5ecbd0 8527 }
9b5ecbd0 8528
2917689a
AM		 8529 /* Calls to dynamic lib functions go through a plt call stub
8530 that uses r2. Branches to undefined symbols might be a call
8531 using old-style dot symbols that can be satisfied by a plt
8532 call into a new-style dynamic library. */
4c52953f 8533 if (sym_sec == NULL)
2917689a
AM		 8534 {
8535 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8536 if (eh != NULL
8537 && eh->oh != NULL
8538 && eh->oh->elf.plt.plist != NULL)
8539 {
8540 ret = 1;
8541 break;
8542 }
4c52953f 8543
2917689a
AM		 8544 /* Ignore other undefined symbols. */
8545 continue;
8546 }
8547
8548 /* Assume branches to other sections not included in the link need
8549 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8550 if (sym_sec->output_section == NULL)
8551 {
8552 ret = 1;
8553 break;
8554 }
8555
8556 if (h == NULL)
8557 sym_value = sym->st_value;
8558 else
8559 {
8560 if (h->root.type != bfd_link_hash_defined
8561 && h->root.type != bfd_link_hash_defweak)
8562 abort ();
8563 sym_value = h->root.u.def.value;
8564 }
8565 sym_value += rel->r_addend;
8566
8567 /* If this branch reloc uses an opd sym, find the code section. */
8568 opd_adjust = get_opd_info (sym_sec);
8569 if (opd_adjust != NULL)
8570 {
4c52953f
AM		 8571 if (h == NULL)
8572 {
8573 long adjust;
8574
8575 adjust = opd_adjust[sym->st_value / 8];
8576 if (adjust == -1)
8577 /* Assume deleted functions won't ever be called. */
8578 continue;
8579 sym_value += adjust;
8580 }
8581
8582 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8583 if (dest == (bfd_vma) -1)
8584 continue;
8585 }
8586 else
8587 dest = (sym_value
8588 + sym_sec->output_offset
8589 + sym_sec->output_section->vma);
8590
8591 /* Ignore branch to self. */
8592 if (sym_sec == isec)
8593 continue;
8594
8595 /* If the called function uses the toc, we need a stub. */
8596 if (sym_sec->has_toc_reloc
8597 || sym_sec->makes_toc_func_call)
8598 {
8599 ret = 1;
8600 break;
8601 }
8602
8603 /* Assume any branch that needs a long branch stub might in fact
8604 need a plt_branch stub. A plt_branch stub uses r2. */
8605 else if (dest - (isec->output_offset
8606 + isec->output_section->vma
8607 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8608 {
8609 ret = 1;
8610 break;
8611 }
4c52953f
AM		 8612
8613 /* If calling back to a section in the process of being tested, we
8614 can't say for sure that no toc adjusting stubs are needed, so
8615 don't return zero. */
8616 else if (sym_sec->call_check_in_progress)
8617 ret = 2;
8618
8619 /* Branches to another section that itself doesn't have any TOC
8620 references are OK. Recursively call ourselves to check. */
8621 else if (sym_sec->id <= htab->top_id
8622 && htab->stub_group[sym_sec->id].toc_off == 0)
8623 {
8624 int recur;
8625
8626 /* Mark current section as indeterminate, so that other
8627 sections that call back to current won't be marked as
8628 known. */
8629 isec->call_check_in_progress = 1;
8630 recur = toc_adjusting_stub_needed (info, sym_sec);
8631 isec->call_check_in_progress = 0;
8632
8633 if (recur < 0)
8634 {
8635 /* An error. Exit. */
8636 ret = -1;
8637 break;
8638 }
8639 else if (recur <= 1)
8640 {
8641 /* Known result. Mark as checked and set section flag. */
8642 htab->stub_group[sym_sec->id].toc_off = 1;
8643 if (recur != 0)
8644 {
8645 sym_sec->makes_toc_func_call = 1;
8646 ret = 1;
8647 break;
8648 }
8649 }
8650 else
8651 {
8652 /* Unknown result. Continue checking. */
8653 ret = 2;
8654 }
8655 }
9b5ecbd0
AM		 8656 }
8657
4c52953f
AM		 8658 if (local_syms != NULL
8659 && (elf_tdata (isec->owner)->symtab_hdr.contents
8660 != (unsigned char *) local_syms))
8661 free (local_syms);
8662 if (elf_section_data (isec)->relocs != relstart)
8663 free (relstart);
8664
9b5ecbd0
AM		 8665 return ret;
8666}
8667
721956f4
AM		 8668/* The linker repeatedly calls this function for each input section,
8669 in the order that input sections are linked into output sections.
8670 Build lists of input sections to determine groupings between which
8671 we may insert linker stubs. */
8672
9b5ecbd0 8673bfd_boolean
4ce794b7 8674ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8675{
8676 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8677
734b6cf9
AM		 8678 if ((isec->output_section->flags & SEC_CODE) != 0
8679 && isec->output_section->index <= htab->top_index)
721956f4 8680 {
734b6cf9 8681 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8682 /* Steal the link_sec pointer for our list. */
721956f4 8683#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8684 /* This happens to make the list in reverse order,
8685 which is what we want. */
734b6cf9
AM		 8686 PREV_SEC (isec) = *list;
8687 *list = isec;
721956f4 8688 }
ad8e1ba5 8689
4c52953f 8690 if (htab->multi_toc_needed)
9b5ecbd0 8691 {
4c52953f
AM		 8692 /* If a code section has a function that uses the TOC then we need
8693 to use the right TOC (obviously). Also, make sure that .opd gets
8694 the correct TOC value for R_PPC64_TOC relocs that don't have or
8695 can't find their function symbol (shouldn't ever happen now). */
8696 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8697 {
8698 if (elf_gp (isec->owner) != 0)
8699 htab->toc_curr = elf_gp (isec->owner);
8700 }
8701 else if (htab->stub_group[isec->id].toc_off == 0)
8702 {
8703 int ret = toc_adjusting_stub_needed (info, isec);
8704 if (ret < 0)
8705 return FALSE;
8706 else
8707 isec->makes_toc_func_call = ret & 1;
8708 }
9b5ecbd0 8709 }
ad8e1ba5
AM		 8710
8711 /* Functions that don't use the TOC can belong in any TOC group.
8712 Use the last TOC base. This happens to make _init and _fini
8713 pasting work. */
8714 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8715 return TRUE;
721956f4
AM		 8716}
8717
8718/* See whether we can group stub sections together. Grouping stub
8719 sections may result in fewer stubs. More importantly, we need to
8720 put all .init* and .fini* stubs at the beginning of the .init or
8721 .fini output sections respectively, because glibc splits the
8722 _init and _fini functions into multiple parts. Putting a stub in
8723 the middle of a function is not a good idea. */
8724
8725static void
4ce794b7
AM		 8726group_sections (struct ppc_link_hash_table *htab,
8727 bfd_size_type stub_group_size,
8728 bfd_boolean stubs_always_before_branch)
721956f4 8729{
734b6cf9
AM		 8730 asection **list = htab->input_list + htab->top_index;
8731 do
721956f4 8732 {
734b6cf9
AM		 8733 asection *tail = *list;
8734 while (tail != NULL)
721956f4 8735 {
734b6cf9
AM		 8736 asection *curr;
8737 asection *prev;
8738 bfd_size_type total;
8739 bfd_boolean big_sec;
8740 bfd_vma curr_toc;
8741
8742 curr = tail;
eea6121a 8743 total = tail->size;
734b6cf9
AM		 8744 big_sec = total >= stub_group_size;
8745 curr_toc = htab->stub_group[tail->id].toc_off;
8746
8747 while ((prev = PREV_SEC (curr)) != NULL
8748 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8749 < stub_group_size)
8750 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8751 curr = prev;
8752
8753 /* OK, the size from the start of CURR to the end is less
8754 than stub_group_size and thus can be handled by one stub
8755 section. (or the tail section is itself larger than
8756 stub_group_size, in which case we may be toast.) We
8757 should really be keeping track of the total size of stubs
8758 added here, as stubs contribute to the final output
8759 section size. That's a little tricky, and this way will
8760 only break if stubs added make the total size more than
8761 2^25, ie. for the default stub_group_size, if stubs total
8762 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8763 do
721956f4
AM		 8764 {
8765 prev = PREV_SEC (tail);
734b6cf9 8766 /* Set up this stub group. */
721956f4
AM		 8767 htab->stub_group[tail->id].link_sec = curr;
8768 }
734b6cf9
AM		 8769 while (tail != curr && (tail = prev) != NULL);
8770
8771 /* But wait, there's more! Input sections up to stub_group_size
8772 bytes before the stub section can be handled by it too.
8773 Don't do this if we have a really large section after the
8774 stubs, as adding more stubs increases the chance that
8775 branches may not reach into the stub section. */
8776 if (!stubs_always_before_branch && !big_sec)
8777 {
8778 total = 0;
8779 while (prev != NULL
8780 && ((total += tail->output_offset - prev->output_offset)
8781 < stub_group_size)
8782 && htab->stub_group[prev->id].toc_off == curr_toc)
8783 {
8784 tail = prev;
8785 prev = PREV_SEC (tail);
8786 htab->stub_group[tail->id].link_sec = curr;
8787 }
8788 }
8789 tail = prev;
721956f4
AM		 8790 }
8791 }
734b6cf9
AM		 8792 while (list-- != htab->input_list);
8793 free (htab->input_list);
721956f4
AM		 8794#undef PREV_SEC
8795}
8796
721956f4
AM		 8797/* Determine and set the size of the stub section for a final link.
8798
8799 The basic idea here is to examine all the relocations looking for
8800 PC-relative calls to a target that is unreachable with a "bl"
8801 instruction. */
8802
b34976b6 8803bfd_boolean
4ce794b7 8804ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8805 struct bfd_link_info *info,
8806 bfd_signed_vma group_size,
8807 asection *(*add_stub_section) (const char *, asection *),
8808 void (*layout_sections_again) (void))
721956f4
AM		 8809{
8810 bfd_size_type stub_group_size;
b34976b6 8811 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8812 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8813
8814 /* Stash our params away. */
721956f4
AM		 8815 htab->add_stub_section = add_stub_section;
8816 htab->layout_sections_again = layout_sections_again;
8817 stubs_always_before_branch = group_size < 0;
8818 if (group_size < 0)
8819 stub_group_size = -group_size;
8820 else
8821 stub_group_size = group_size;
8822 if (stub_group_size == 1)
8823 {
8824 /* Default values. */
58ac9f71
AM		 8825 if (stubs_always_before_branch)
8826 {
8827 stub_group_size = 0x1e00000;
8828 if (htab->has_14bit_branch)
8829 stub_group_size = 0x7800;
8830 }
8831 else
8832 {
8833 stub_group_size = 0x1c00000;
8834 if (htab->has_14bit_branch)
8835 stub_group_size = 0x7000;
8836 }
721956f4
AM		 8837 }
8838
8839 group_sections (htab, stub_group_size, stubs_always_before_branch);
8840
721956f4
AM		 8841 while (1)
8842 {
8843 bfd *input_bfd;
8844 unsigned int bfd_indx;
8845 asection *stub_sec;
b34976b6 8846 bfd_boolean stub_changed;
721956f4
AM		 8847
8848 htab->stub_iteration += 1;
b34976b6 8849 stub_changed = FALSE;
721956f4
AM		 8850
8851 for (input_bfd = info->input_bfds, bfd_indx = 0;
8852 input_bfd != NULL;
8853 input_bfd = input_bfd->link_next, bfd_indx++)
8854 {
8855 Elf_Internal_Shdr *symtab_hdr;
8856 asection *section;
6cdc0ccc 8857 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8858
8859 /* We'll need the symbol table in a second. */
8860 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8861 if (symtab_hdr->sh_info == 0)
8862 continue;
8863
721956f4
AM		 8864 /* Walk over each section attached to the input bfd. */
8865 for (section = input_bfd->sections;
8866 section != NULL;
8867 section = section->next)
8868 {
721956f4 8869 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8870
8871 /* If there aren't any relocs, then there's nothing more
8872 to do. */
8873 if ((section->flags & SEC_RELOC) == 0
8874 || section->reloc_count == 0)
8875 continue;
8876
8877 /* If this section is a link-once section that will be
8878 discarded, then don't create any stubs. */
8879 if (section->output_section == NULL
8880 || section->output_section->owner != output_bfd)
8881 continue;
8882
1e2f5b6e
AM		 8883 /* Get the relocs. */
8884 internal_relocs
4ce794b7 8885 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8886 info->keep_memory);
721956f4 8887 if (internal_relocs == NULL)
1e2f5b6e 8888 goto error_ret_free_local;
721956f4
AM		 8889
8890 /* Now examine each relocation. */
8891 irela = internal_relocs;
8892 irelaend = irela + section->reloc_count;
8893 for (; irela < irelaend; irela++)
8894 {
4ce794b7
AM		 8895 enum elf_ppc64_reloc_type r_type;
8896 unsigned int r_indx;
721956f4
AM		 8897 enum ppc_stub_type stub_type;
8898 struct ppc_stub_hash_entry *stub_entry;
8387904d 8899 asection *sym_sec, *code_sec;
721956f4
AM		 8900 bfd_vma sym_value;
8901 bfd_vma destination;
8843416a 8902 bfd_boolean ok_dest;
721956f4 8903 struct ppc_link_hash_entry *hash;
8387904d 8904 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8905 struct elf_link_hash_entry *h;
8906 Elf_Internal_Sym *sym;
721956f4
AM		 8907 char *stub_name;
8908 const asection *id_sec;
8387904d 8909 long *opd_adjust;
721956f4
AM		 8910
8911 r_type = ELF64_R_TYPE (irela->r_info);
8912 r_indx = ELF64_R_SYM (irela->r_info);
8913
4ce794b7 8914 if (r_type >= R_PPC64_max)
721956f4
AM		 8915 {
8916 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8917 goto error_ret_free_internal;
721956f4
AM		 8918 }
8919
8920 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8921 if (r_type != R_PPC64_REL24
8922 && r_type != R_PPC64_REL14
8923 && r_type != R_PPC64_REL14_BRTAKEN
8924 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8925 continue;
8926
8927 /* Now determine the call target, its name, value,
8928 section. */
411e1bfb
AM		 8929 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8930 r_indx, input_bfd))
8931 goto error_ret_free_internal;
8932 hash = (struct ppc_link_hash_entry *) h;
8933
8843416a 8934 ok_dest = FALSE;
8387904d 8935 fdh = NULL;
411e1bfb 8936 if (hash == NULL)
721956f4 8937 {
411e1bfb 8938 sym_value = sym->st_value;
8843416a 8939 ok_dest = TRUE;
721956f4
AM		 8940 }
8941 else
8942 {
411e1bfb 8943 sym_value = 0;
99877b66
AM		 8944 /* Recognise an old ABI func code entry sym, and
8945 use the func descriptor sym instead. */
ceb1f1ef 8946 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 8947 && (fdh = get_fdh (hash, htab)) != NULL)
8948 {
8387904d
AM		 8949 if (fdh->elf.root.type == bfd_link_hash_defined
8950 || fdh->elf.root.type == bfd_link_hash_defweak)
8951 {
8952 sym_sec = fdh->elf.root.u.def.section;
8953 sym_value = fdh->elf.root.u.def.value;
8954 if (sym_sec->output_section != NULL)
8955 ok_dest = TRUE;
8956 }
99877b66
AM		 8957 else
8958 fdh = NULL;
8387904d
AM		 8959 }
8960 else if (hash->elf.root.type == bfd_link_hash_defined
8961 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8962 {
721956f4
AM		 8963 sym_value = hash->elf.root.u.def.value;
8964 if (sym_sec->output_section != NULL)
8843416a 8965 ok_dest = TRUE;
721956f4
AM		 8966 }
8967 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8968 ;
8969 else if (hash->elf.root.type == bfd_link_hash_undefined)
8970 ;
8971 else
8972 {
8973 bfd_set_error (bfd_error_bad_value);
8974 goto error_ret_free_internal;
8975 }
8976 }
8977
8843416a
AM		 8978 destination = 0;
8979 if (ok_dest)
8980 {
8981 sym_value += irela->r_addend;
8982 destination = (sym_value
8983 + sym_sec->output_offset
8984 + sym_sec->output_section->vma);
8985 }
8986
8387904d
AM		 8987 code_sec = sym_sec;
8988 opd_adjust = get_opd_info (sym_sec);
8989 if (opd_adjust != NULL)
8990 {
8991 bfd_vma dest;
8992
8993 if (hash == NULL)
8994 {
3f764659 8995 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 8996 if (adjust == -1)
8997 continue;
8998 sym_value += adjust;
8999 }
9000 dest = opd_entry_value (sym_sec, sym_value,
9001 &code_sec, &sym_value);
9002 if (dest != (bfd_vma) -1)
9003 {
9004 destination = dest;
9005 if (fdh != NULL)
9006 {
9007 /* Fixup old ABI sym to point at code
9008 entry. */
99877b66 9009 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9010 hash->elf.root.u.def.section = code_sec;
9011 hash->elf.root.u.def.value = sym_value;
9012 }
9013 }
9014 }
9015
721956f4
AM		 9016 /* Determine what (if any) linker stub is needed. */
9017 stub_type = ppc_type_of_stub (section, irela, &hash,
9018 destination);
ad8e1ba5
AM		 9019
9020 if (stub_type != ppc_stub_plt_call)
9021 {
9022 /* Check whether we need a TOC adjusting stub.
9023 Since the linker pastes together pieces from
9024 different object files when creating the
9025 _init and _fini functions, it may be that a
9026 call to what looks like a local sym is in
9027 fact a call needing a TOC adjustment. */
8387904d
AM		 9028 if (code_sec != NULL
9029 && code_sec->output_section != NULL
9030 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9031 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9032 && (code_sec->has_toc_reloc
9033 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9034 stub_type = ppc_stub_long_branch_r2off;
9035 }
9036
721956f4
AM		 9037 if (stub_type == ppc_stub_none)
9038 continue;
9039
411e1bfb
AM		 9040 /* __tls_get_addr calls might be eliminated. */
9041 if (stub_type != ppc_stub_plt_call
9042 && hash != NULL
8387904d
AM		 9043 && (hash == htab->tls_get_addr
9044 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9045 && section->has_tls_reloc
9046 && irela != internal_relocs)
9047 {
9048 /* Get tls info. */
e7b938ca 9049 char *tls_mask;
411e1bfb 9050
0d4792f7 9051 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9052 irela - 1, input_bfd))
9053 goto error_ret_free_internal;
e7b938ca 9054 if (*tls_mask != 0)
411e1bfb
AM		 9055 continue;
9056 }
9057
721956f4
AM		 9058 /* Support for grouping stub sections. */
9059 id_sec = htab->stub_group[section->id].link_sec;
9060
9061 /* Get the name of this stub. */
9062 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9063 if (!stub_name)
9064 goto error_ret_free_internal;
9065
9066 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9067 stub_name, FALSE, FALSE);
721956f4
AM		 9068 if (stub_entry != NULL)
9069 {
9070 /* The proper stub has already been created. */
9071 free (stub_name);
9072 continue;
9073 }
9074
9075 stub_entry = ppc_add_stub (stub_name, section, htab);
9076 if (stub_entry == NULL)
9077 {
9078 free (stub_name);
6cdc0ccc
AM		 9079 error_ret_free_internal:
9080 if (elf_section_data (section)->relocs == NULL)
9081 free (internal_relocs);
9082 error_ret_free_local:
9083 if (local_syms != NULL
9084 && (symtab_hdr->contents
9085 != (unsigned char *) local_syms))
9086 free (local_syms);
b34976b6 9087 return FALSE;
721956f4
AM		 9088 }
9089
ad8e1ba5 9090 stub_entry->stub_type = stub_type;
721956f4 9091 stub_entry->target_value = sym_value;
8387904d 9092 stub_entry->target_section = code_sec;
721956f4 9093 stub_entry->h = hash;
411e1bfb 9094 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9095
9096 if (stub_entry->h != NULL)
9097 htab->stub_globals += 1;
9098
b34976b6 9099 stub_changed = TRUE;
721956f4
AM		 9100 }
9101
9102 /* We're done with the internal relocs, free them. */
6cdc0ccc 9103 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9104 free (internal_relocs);
721956f4 9105 }
6cdc0ccc
AM		 9106
9107 if (local_syms != NULL
9108 && symtab_hdr->contents != (unsigned char *) local_syms)
9109 {
9110 if (!info->keep_memory)
9111 free (local_syms);
9112 else
9113 symtab_hdr->contents = (unsigned char *) local_syms;
9114 }
721956f4
AM		 9115 }
9116
9117 if (!stub_changed)
9118 break;
9119
9120 /* OK, we've added some stubs. Find out the new size of the
9121 stub sections. */
9122 for (stub_sec = htab->stub_bfd->sections;
9123 stub_sec != NULL;
9124 stub_sec = stub_sec->next)
e717da7e 9125 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 9126 {
9127 stub_sec->size = 0;
9128 stub_sec->reloc_count = 0;
9129 }
eea6121a
AM		 9130
9131 htab->brlt->size = 0;
ee75fd95 9132 if (htab->relbrlt != NULL)
eea6121a 9133 htab->relbrlt->size = 0;
721956f4 9134
63bc6f6c 9135 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 9136
9137 /* Ask the linker to do its stuff. */
9138 (*htab->layout_sections_again) ();
9139 }
9140
afbe61cf
AM		 9141 /* It would be nice to strip .branch_lt from the output if the
9142 section is empty, but it's too late. If we strip sections here,
9143 the dynamic symbol table is corrupted since the section symbol
9144 for the stripped section isn't written. */
721956f4 9145
b34976b6 9146 return TRUE;
721956f4
AM		 9147}
9148
9149/* Called after we have determined section placement. If sections
805fc799 9150 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9151
805fc799 9152bfd_vma
4ce794b7 9153ppc64_elf_toc (bfd *obfd)
721956f4 9154{
805fc799
AM		 9155 asection *s;
9156 bfd_vma TOCstart;
721956f4 9157
805fc799
AM		 9158 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9159 order. The TOC starts where the first of these sections starts. */
9160 s = bfd_get_section_by_name (obfd, ".got");
9161 if (s == NULL)
9162 s = bfd_get_section_by_name (obfd, ".toc");
9163 if (s == NULL)
9164 s = bfd_get_section_by_name (obfd, ".tocbss");
9165 if (s == NULL)
9166 s = bfd_get_section_by_name (obfd, ".plt");
9167 if (s == NULL)
9168 {
9169 /* This may happen for
9170 o references to TOC base (SYM@toc / TOC[tc0]) without a
9171 .toc directive
9172 o bad linker script
9173 o --gc-sections and empty TOC sections
9174
9175 FIXME: Warn user? */
9176
9177 /* Look for a likely section. We probably won't even be
9178 using TOCstart. */
9179 for (s = obfd->sections; s != NULL; s = s->next)
9180 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9181 == (SEC_ALLOC | SEC_SMALL_DATA))
9182 break;
721956f4 9183 if (s == NULL)
805fc799
AM		 9184 for (s = obfd->sections; s != NULL; s = s->next)
9185 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9186 == (SEC_ALLOC | SEC_SMALL_DATA))
9187 break;
721956f4 9188 if (s == NULL)
805fc799
AM		 9189 for (s = obfd->sections; s != NULL; s = s->next)
9190 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9191 break;
721956f4 9192 if (s == NULL)
805fc799
AM		 9193 for (s = obfd->sections; s != NULL; s = s->next)
9194 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9195 break;
9196 }
721956f4 9197
805fc799
AM		 9198 TOCstart = 0;
9199 if (s != NULL)
9200 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9201
805fc799 9202 return TOCstart;
721956f4
AM		 9203}
9204
9205/* Build all the stubs associated with the current output file.
9206 The stubs are kept in a hash table attached to the main linker
9207 hash table. This function is called via gldelf64ppc_finish. */
9208
b34976b6 9209bfd_boolean
4ce794b7
AM		 9210ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9211 struct bfd_link_info *info,
9212 char **stats)
5d1634d7
AM		 9213{
9214 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9215 asection *stub_sec;
5d1634d7 9216 bfd_byte *p;
e717da7e 9217 int stub_sec_count = 0;
5d1634d7 9218
ad8e1ba5 9219 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9220
9221 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9222 for (stub_sec = htab->stub_bfd->sections;
9223 stub_sec != NULL;
9224 stub_sec = stub_sec->next)
eea6121a
AM		 9225 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9226 && stub_sec->size != 0)
e717da7e 9227 {
eea6121a
AM		 9228 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9229 if (stub_sec->contents == NULL)
9230 return FALSE;
9231 /* We want to check that built size is the same as calculated
9232 size. rawsize is a convenient location to use. */
9233 stub_sec->rawsize = stub_sec->size;
9234 stub_sec->size = 0;
e717da7e 9235 }
5d1634d7 9236
4ce794b7 9237 if (htab->plt != NULL)
5d1634d7 9238 {
9f951329 9239 unsigned int indx;
ad8e1ba5 9240 bfd_vma plt0;
9f951329 9241
721956f4 9242 /* Build the .glink plt call stub. */
4ce794b7
AM		 9243 plt0 = (htab->plt->output_section->vma
9244 + htab->plt->output_offset
9245 - (htab->glink->output_section->vma
9246 + htab->glink->output_offset
ad8e1ba5
AM		 9247 + GLINK_CALL_STUB_SIZE));
9248 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9249 {
ad8e1ba5
AM		 9250 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9251 bfd_set_error (bfd_error_bad_value);
9252 return FALSE;
721956f4 9253 }
721956f4 9254
97b639ba
AM		 9255 if (htab->emit_stub_syms)
9256 {
9257 struct elf_link_hash_entry *h;
9258 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9259 if (h == NULL)
9260 return FALSE;
9261 if (h->root.type == bfd_link_hash_new)
9262 {
9263 h->root.type = bfd_link_hash_defined;
9264 h->root.u.def.section = htab->glink;
9265 h->root.u.def.value = 0;
f5385ebf
AM		 9266 h->ref_regular = 1;
9267 h->def_regular = 1;
9268 h->ref_regular_nonweak = 1;
9269 h->forced_local = 1;
9270 h->non_elf = 0;
97b639ba
AM		 9271 }
9272 }
4ce794b7
AM		 9273 p = htab->glink->contents;
9274 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9275 p += 4;
4ce794b7 9276 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9277 p += 4;
4ce794b7 9278 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9279 p += 4;
4ce794b7 9280 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9281 p += 4;
4ce794b7 9282 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9283 p += 4;
4ce794b7 9284 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9285 p += 4;
4ce794b7 9286 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9287 p += 4;
4ce794b7 9288 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9289 p += 4;
4ce794b7 9290 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9291 p += 4;
4ce794b7 9292 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9293 p += 4;
4ce794b7 9294 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9295 p += 4;
4ce794b7 9296 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9297 p += 4;
4ce794b7 9298 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9299 p += 4;
4ce794b7 9300 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9301 p += 4;
4ce794b7 9302 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9303 p += 4;
4ce794b7 9304 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9305 p += 4;
9306
9f951329
AM		 9307 /* Build the .glink lazy link call stubs. */
9308 indx = 0;
eea6121a 9309 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9310 {
9311 if (indx < 0x8000)
9312 {
4ce794b7 9313 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9314 p += 4;
9315 }
9316 else
9317 {
4ce794b7 9318 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9319 p += 4;
4ce794b7 9320 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9321 p += 4;
9322 }
4ce794b7
AM		 9323 bfd_put_32 (htab->glink->owner,
9324 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9325 indx++;
9f951329
AM		 9326 p += 4;
9327 }
eea6121a 9328 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9329 }
5d1634d7 9330
eea6121a 9331 if (htab->brlt->size != 0)
721956f4 9332 {
4ce794b7 9333 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9334 htab->brlt->size);
4ce794b7 9335 if (htab->brlt->contents == NULL)
b34976b6 9336 return FALSE;
721956f4 9337 }
ee75fd95 9338 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9339 {
9340 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9341 htab->relbrlt->size);
63bc6f6c
AM		 9342 if (htab->relbrlt->contents == NULL)
9343 return FALSE;
9344 }
5d1634d7 9345
721956f4
AM		 9346 /* Build the stubs as directed by the stub hash table. */
9347 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9348
721956f4
AM		 9349 for (stub_sec = htab->stub_bfd->sections;
9350 stub_sec != NULL;
9351 stub_sec = stub_sec->next)
e717da7e
AM		 9352 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9353 {
9354 stub_sec_count += 1;
eea6121a 9355 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9356 break;
9357 }
5d1634d7 9358
721956f4 9359 if (stub_sec != NULL
eea6121a 9360 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9361 {
b34976b6 9362 htab->stub_error = TRUE;
721956f4 9363 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9364 }
721956f4 9365
d2a300cf
AM		 9366 if (htab->stub_error)
9367 return FALSE;
9368
9369 if (stats != NULL)
9370 {
9371 *stats = bfd_malloc (500);
9372 if (*stats == NULL)
9373 return FALSE;
9374
ee75fd95 9375 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9376 " branch %lu\n"
9377 " toc adjust %lu\n"
9378 " long branch %lu\n"
9379 " long toc adj %lu\n"
9380 " plt call %lu"),
e717da7e 9381 stub_sec_count,
ee75fd95 9382 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9383 htab->stub_count[ppc_stub_long_branch - 1],
9384 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9385 htab->stub_count[ppc_stub_plt_branch - 1],
9386 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9387 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9388 }
9389 return TRUE;
5bd4f169
AM		 9390}
9391
99877b66
AM		 9392/* This function undoes the changes made by add_symbol_adjust. */
9393
9394static bfd_boolean
9395undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9396{
9397 struct ppc_link_hash_entry *eh;
9398
9399 if (h->root.type == bfd_link_hash_indirect)
9400 return TRUE;
9401
9402 if (h->root.type == bfd_link_hash_warning)
9403 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9404
9405 eh = (struct ppc_link_hash_entry *) h;
9406 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9407 return TRUE;
9408
9409 eh->elf.root.type = bfd_link_hash_undefined;
9410 return TRUE;
9411}
9412
9413void
9414ppc64_elf_restore_symbols (struct bfd_link_info *info)
9415{
9416 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9417 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9418}
9419
5bd4f169
AM		 9420/* The RELOCATE_SECTION function is called by the ELF backend linker
9421 to handle the relocations for a section.
9422
9423 The relocs are always passed as Rela structures; if the section
9424 actually uses Rel structures, the r_addend field will always be
9425 zero.
9426
9427 This function is responsible for adjust the section contents as
9428 necessary, and (if using Rela relocs and generating a
1049f94e 9429 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9430 necessary.
9431
9432 This function does not have to worry about setting the reloc
9433 address or the reloc symbol index.
9434
9435 LOCAL_SYMS is a pointer to the swapped in local symbols.
9436
9437 LOCAL_SECTIONS is an array giving the section in the input file
9438 corresponding to the st_shndx field of each local symbol.
9439
9440 The global hash table entry for the global symbols can be found
9441 via elf_sym_hashes (input_bfd).
9442
1049f94e 9443 When generating relocatable output, this function must handle
5bd4f169
AM		 9444 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9445 going to be the section symbol corresponding to the output
9446 section, which means that the addend must be adjusted
9447 accordingly. */
9448
b34976b6 9449static bfd_boolean
4ce794b7
AM		 9450ppc64_elf_relocate_section (bfd *output_bfd,
9451 struct bfd_link_info *info,
9452 bfd *input_bfd,
9453 asection *input_section,
9454 bfd_byte *contents,
9455 Elf_Internal_Rela *relocs,
9456 Elf_Internal_Sym *local_syms,
9457 asection **local_sections)
5bd4f169 9458{
65f38f15 9459 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9460 Elf_Internal_Shdr *symtab_hdr;
9461 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9462 Elf_Internal_Rela *rel;
9463 Elf_Internal_Rela *relend;
411e1bfb
AM		 9464 Elf_Internal_Rela outrel;
9465 bfd_byte *loc;
411e1bfb 9466 struct got_entry **local_got_ents;
5bd4f169 9467 bfd_vma TOCstart;
b34976b6
AM		 9468 bfd_boolean ret = TRUE;
9469 bfd_boolean is_opd;
96e0dda4 9470 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9471 bfd_boolean is_power4 = FALSE;
5bd4f169 9472
1049f94e 9473 if (info->relocatable)
b34976b6 9474 return TRUE;
b491616a 9475
65f38f15 9476 /* Initialize howto table if needed. */
5bd4f169 9477 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9478 ppc_howto_init ();
9479
65f38f15 9480 htab = ppc_hash_table (info);
ee75fd95
AM		 9481
9482 /* Don't relocate stub sections. */
9483 if (input_section->owner == htab->stub_bfd)
9484 return TRUE;
9485
411e1bfb 9486 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9487 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9488 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9489 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9490 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9491
5bd4f169
AM		 9492 rel = relocs;
9493 relend = relocs + input_section->reloc_count;
9494 for (; rel < relend; rel++)
9495 {
04c9666a 9496 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9497 bfd_vma addend;
9498 bfd_reloc_status_type r;
9499 Elf_Internal_Sym *sym;
9500 asection *sec;
039b3fef
AM		 9501 struct elf_link_hash_entry *h_elf;
9502 struct ppc_link_hash_entry *h;
9503 struct ppc_link_hash_entry *fdh;
5bd4f169 9504 const char *sym_name;
0d4792f7 9505 unsigned long r_symndx, toc_symndx;
951fd09b 9506 char tls_mask, tls_gd, tls_type;
0d4792f7 9507 char sym_type;
5bd4f169 9508 bfd_vma relocation;
b34976b6
AM		 9509 bfd_boolean unresolved_reloc;
9510 bfd_boolean warned;
50bc7936 9511 unsigned long insn, mask;
721956f4
AM		 9512 struct ppc_stub_hash_entry *stub_entry;
9513 bfd_vma max_br_offset;
9514 bfd_vma from;
5bd4f169 9515
4ce794b7 9516 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9517 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9518
9519 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9520 symbol of the previous ADDR64 reloc. The symbol gives us the
9521 proper TOC base to use. */
9522 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9523 && rel != relocs
9524 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9525 && is_opd)
9526 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9527
4ce794b7
AM		 9528 sym = NULL;
9529 sec = NULL;
039b3fef 9530 h_elf = NULL;
4ce794b7 9531 sym_name = NULL;
b34976b6
AM		 9532 unresolved_reloc = FALSE;
9533 warned = FALSE;
65f38f15 9534
0b13192e 9535 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9536 {
9537 /* It's a local symbol. */
4025353c
AM		 9538 long *opd_adjust;
9539
5bd4f169
AM		 9540 sym = local_syms + r_symndx;
9541 sec = local_sections[r_symndx];
26c61ae5 9542 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9543 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9544 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9545 opd_adjust = get_opd_info (sec);
9546 if (opd_adjust != NULL)
1e2f5b6e 9547 {
3f764659 9548 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9549 if (adjust == -1)
9550 relocation = 0;
9551 else
9552 relocation += adjust;
1e2f5b6e 9553 }
5bd4f169
AM		 9554 }
9555 else
9556 {
b2a8e766
AM		 9557 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9558 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9559 h_elf, sec, relocation,
b2a8e766 9560 unresolved_reloc, warned);
039b3fef
AM		 9561 sym_name = h_elf->root.root.string;
9562 sym_type = h_elf->type;
5bd4f169 9563 }
039b3fef 9564 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9565
951fd09b
AM		 9566 /* TLS optimizations. Replace instruction sequences and relocs
9567 based on information we collected in tls_optimize. We edit
9568 RELOCS so that --emit-relocs will output something sensible
9569 for the final instruction stream. */
9570 tls_mask = 0;
9571 tls_gd = 0;
0d4792f7 9572 toc_symndx = 0;
d881513a 9573 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9574 {
9575 if (h != NULL)
039b3fef 9576 tls_mask = h->tls_mask;
411e1bfb
AM		 9577 else if (local_got_ents != NULL)
9578 {
e7b938ca
AM		 9579 char *lgot_masks;
9580 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9581 tls_mask = lgot_masks[r_symndx];
411e1bfb 9582 }
0d4792f7
AM		 9583 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9584 {
9585 /* Check for toc tls entries. */
9586 char *toc_tls;
9587
9588 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9589 rel, input_bfd))
9590 return FALSE;
9591
9592 if (toc_tls)
9593 tls_mask = *toc_tls;
9594 }
9595 }
9596
9597 /* Check that tls relocs are used with tls syms, and non-tls
9598 relocs are used with non-tls syms. */
9599 if (r_symndx != 0
9600 && r_type != R_PPC64_NONE
9601 && (h == NULL
039b3fef
AM		 9602 || h->elf.root.type == bfd_link_hash_defined
9603 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9604 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9605 {
9606 if (r_type == R_PPC64_TLS && tls_mask != 0)
9607 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9608 ;
9609 else
9610 (*_bfd_error_handler)
9611 (sym_type == STT_TLS
d003868e
AM		 9612 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9613 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9614 input_bfd,
9615 input_section,
0d4792f7
AM		 9616 (long) rel->r_offset,
9617 ppc64_elf_howto_table[r_type]->name,
9618 sym_name);
411e1bfb
AM		 9619 }
9620
9621 /* Ensure reloc mapping code below stays sane. */
9622 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9623 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9624 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9625 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9626 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9627 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9628 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9629 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9630 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9631 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9632 abort ();
0d4792f7 9633
411e1bfb
AM		 9634 switch (r_type)
9635 {
9636 default:
411e1bfb
AM		 9637 break;
9638
9639 case R_PPC64_TOC16:
9640 case R_PPC64_TOC16_LO:
9641 case R_PPC64_TOC16_DS:
9642 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9643 {
9644 /* Check for toc tls entries. */
9645 char *toc_tls;
951fd09b 9646 int retval;
411e1bfb 9647
0d4792f7
AM		 9648 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9649 rel, input_bfd);
951fd09b 9650 if (retval == 0)
411e1bfb
AM		 9651 return FALSE;
9652
9653 if (toc_tls)
9654 {
951fd09b 9655 tls_mask = *toc_tls;
411e1bfb
AM		 9656 if (r_type == R_PPC64_TOC16_DS
9657 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9658 {
9659 if (tls_mask != 0
9660 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9661 goto toctprel;
9662 }
411e1bfb 9663 else
951fd09b
AM		 9664 {
9665 /* If we found a GD reloc pair, then we might be
9666 doing a GD->IE transition. */
9667 if (retval == 2)
9668 {
9669 tls_gd = TLS_TPRELGD;
9670 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9671 goto tls_get_addr_check;
9672 }
9673 else if (retval == 3)
9674 {
9675 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9676 goto tls_get_addr_check;
9677 }
9678 }
411e1bfb
AM		 9679 }
9680 }
9681 break;
9682
9683 case R_PPC64_GOT_TPREL16_DS:
9684 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9685 if (tls_mask != 0
9686 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9687 {
81407a69 9688 toctprel:
411e1bfb
AM		 9689 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9690 insn &= 31 << 21;
9691 insn |= 0x3c0d0000; /* addis 0,13,0 */
9692 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9693 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9694 if (toc_symndx != 0)
9695 {
9696 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9697 /* We changed the symbol. Start over in order to
9698 get h, sym, sec etc. right. */
9699 rel--;
9700 continue;
9701 }
9702 else
9703 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9704 }
9705 break;
9706
9707 case R_PPC64_TLS:
951fd09b
AM		 9708 if (tls_mask != 0
9709 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9710 {
50bc7936 9711 bfd_vma rtra;
411e1bfb 9712 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9713 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9714 == ((31 << 26) | (13 << 11)))
9715 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9716 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9717 == ((31 << 26) | (13 << 16)))
9718 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9719 else
9720 abort ();
9721 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9722 /* add -> addi. */
9723 insn = 14 << 26;
9724 else if ((insn & (31 << 1)) == 23 << 1
9725 && ((insn & (31 << 6)) < 14 << 6
9726 || ((insn & (31 << 6)) >= 16 << 6
9727 && (insn & (31 << 6)) < 24 << 6)))
9728 /* load and store indexed -> dform. */
9729 insn = (32 | ((insn >> 6) & 31)) << 26;
9730 else if ((insn & (31 << 1)) == 21 << 1
9731 && (insn & (0x1a << 6)) == 0)
9732 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9733 insn = (((58 | ((insn >> 6) & 4)) << 26)
9734 | ((insn >> 6) & 1));
9735 else if ((insn & (31 << 1)) == 21 << 1
9736 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9737 /* lwax -> lwa. */
9738 insn = (58 << 26) | 2;
9739 else
9740 abort ();
9741 insn |= rtra;
9742 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9743 /* Was PPC64_TLS which sits on insn boundary, now
9744 PPC64_TPREL16_LO which is at insn+2. */
9745 rel->r_offset += 2;
0d4792f7
AM		 9746 r_type = R_PPC64_TPREL16_LO;
9747 if (toc_symndx != 0)
9748 {
9749 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9750 /* We changed the symbol. Start over in order to
9751 get h, sym, sec etc. right. */
9752 rel--;
9753 continue;
9754 }
9755 else
9756 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9757 }
9758 break;
9759
411e1bfb
AM		 9760 case R_PPC64_GOT_TLSGD16_HI:
9761 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9762 tls_gd = TLS_TPRELGD;
9763 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9764 goto tls_gdld_hi;
9765 break;
9766
411e1bfb
AM		 9767 case R_PPC64_GOT_TLSLD16_HI:
9768 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9769 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9770 {
951fd09b
AM		 9771 tls_gdld_hi:
9772 if ((tls_mask & tls_gd) != 0)
9773 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9774 + R_PPC64_GOT_TPREL16_DS);
9775 else
411e1bfb 9776 {
951fd09b
AM		 9777 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9778 rel->r_offset -= 2;
9779 r_type = R_PPC64_NONE;
411e1bfb 9780 }
951fd09b 9781 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9782 }
9783 break;
9784
951fd09b
AM		 9785 case R_PPC64_GOT_TLSGD16:
9786 case R_PPC64_GOT_TLSGD16_LO:
9787 tls_gd = TLS_TPRELGD;
9788 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9789 goto tls_get_addr_check;
9790 break;
411e1bfb 9791
951fd09b
AM		 9792 case R_PPC64_GOT_TLSLD16:
9793 case R_PPC64_GOT_TLSLD16_LO:
9794 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9795 {
9796 tls_get_addr_check:
9797 if (rel + 1 < relend)
411e1bfb 9798 {
951fd09b
AM		 9799 enum elf_ppc64_reloc_type r_type2;
9800 unsigned long r_symndx2;
9801 struct elf_link_hash_entry *h2;
9802 bfd_vma insn1, insn2, insn3;
9803 bfd_vma offset;
9804
9805 /* The next instruction should be a call to
9806 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9807 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9808 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9809 if (r_symndx2 < symtab_hdr->sh_info
9810 || (r_type2 != R_PPC64_REL14
9811 && r_type2 != R_PPC64_REL14_BRTAKEN
9812 && r_type2 != R_PPC64_REL14_BRNTAKEN
9813 && r_type2 != R_PPC64_REL24))
9814 break;
9815
9816 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9817 while (h2->root.type == bfd_link_hash_indirect
9818 || h2->root.type == bfd_link_hash_warning)
9819 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9820 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9821 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9822 break;
9823
9824 /* OK, it checks out. Replace the call. */
9825 offset = rel[1].r_offset;
9826 insn1 = bfd_get_32 (output_bfd,
9827 contents + rel->r_offset - 2);
9828 insn3 = bfd_get_32 (output_bfd,
9829 contents + offset + 4);
9830 if ((tls_mask & tls_gd) != 0)
411e1bfb 9831 {
951fd09b
AM		 9832 /* IE */
9833 insn1 &= (1 << 26) - (1 << 2);
9834 insn1 |= 58 << 26; /* ld */
9835 insn2 = 0x7c636a14; /* add 3,3,13 */
9836 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9837 if ((tls_mask & TLS_EXPLICIT) == 0)
9838 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9839 + R_PPC64_GOT_TPREL16_DS);
9840 else
9841 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9842 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9843 }
9844 else
951fd09b
AM		 9845 {
9846 /* LE */
9847 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9848 insn2 = 0x38630000; /* addi 3,3,0 */
9849 if (tls_gd == 0)
9850 {
9851 /* Was an LD reloc. */
9852 r_symndx = 0;
e1918d23
AM		 9853 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9854 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9855 }
0d4792f7
AM		 9856 else if (toc_symndx != 0)
9857 r_symndx = toc_symndx;
951fd09b
AM		 9858 r_type = R_PPC64_TPREL16_HA;
9859 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9860 rel[1].r_info = ELF64_R_INFO (r_symndx,
9861 R_PPC64_TPREL16_LO);
9862 rel[1].r_offset += 2;
9863 }
9864 if (insn3 == NOP
9865 || insn3 == CROR_151515 || insn3 == CROR_313131)
9866 {
9867 insn3 = insn2;
9868 insn2 = NOP;
9869 rel[1].r_offset += 4;
9870 }
9871 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9872 bfd_put_32 (output_bfd, insn2, contents + offset);
9873 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9874 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9875 {
0d4792f7
AM		 9876 /* We changed the symbol. Start over in order
9877 to get h, sym, sec etc. right. */
951fd09b
AM		 9878 rel--;
9879 continue;
9880 }
411e1bfb 9881 }
411e1bfb 9882 }
411e1bfb
AM		 9883 break;
9884
9885 case R_PPC64_DTPMOD64:
951fd09b
AM		 9886 if (rel + 1 < relend
9887 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9888 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9889 {
951fd09b
AM		 9890 if ((tls_mask & TLS_GD) == 0)
9891 {
9892 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9893 if ((tls_mask & TLS_TPRELGD) != 0)
9894 r_type = R_PPC64_TPREL64;
9895 else
9896 {
4ce794b7 9897 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9898 r_type = R_PPC64_NONE;
9899 }
9900 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9901 }
9902 }
9903 else
9904 {
9905 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9906 {
4ce794b7 9907 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9908 r_type = R_PPC64_NONE;
951fd09b 9909 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9910 }
411e1bfb
AM		 9911 }
9912 break;
9913
9914 case R_PPC64_TPREL64:
951fd09b 9915 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9916 {
9917 r_type = R_PPC64_NONE;
9918 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9919 }
9920 break;
9921 }
9922
9923 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9924 insn = 0;
b25116a9
AM		 9925 max_br_offset = 1 << 25;
9926 addend = rel->r_addend;
65f38f15 9927 switch (r_type)
5bd4f169
AM		 9928 {
9929 default:
65f38f15 9930 break;
5bd4f169 9931
65f38f15
AM		 9932 /* Branch taken prediction relocations. */
9933 case R_PPC64_ADDR14_BRTAKEN:
9934 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9935 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9936 /* Fall thru. */
65f38f15 9937
86c76c7b 9938 /* Branch not taken prediction relocations. */
65f38f15
AM		 9939 case R_PPC64_ADDR14_BRNTAKEN:
9940 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9941 insn |= bfd_get_32 (output_bfd,
9942 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9943 /* Fall thru. */
86c76c7b 9944
b25116a9
AM		 9945 case R_PPC64_REL14:
9946 max_br_offset = 1 << 15;
9947 /* Fall thru. */
5bd4f169 9948
65f38f15 9949 case R_PPC64_REL24:
ad8e1ba5
AM		 9950 /* Calls to functions with a different TOC, such as calls to
9951 shared objects, need to alter the TOC pointer. This is
9952 done using a linkage stub. A REL24 branching to these
9953 linkage stubs needs to be followed by a nop, as the nop
9954 will be replaced with an instruction to restore the TOC
9955 base pointer. */
b25116a9 9956 stub_entry = NULL;
8387904d 9957 fdh = h;
ad8e1ba5 9958 if (((h != NULL
039b3fef
AM		 9959 && (((fdh = h->oh) != NULL
9960 && fdh->elf.plt.plist != NULL)
9961 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9962 || (sec != NULL
ad8e1ba5 9963 && sec->output_section != NULL
b25116a9 9964 && sec->id <= htab->top_id
ad8e1ba5
AM		 9965 && (htab->stub_group[sec->id].toc_off
9966 != htab->stub_group[input_section->id].toc_off)))
721956f4 9967 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9968 rel, htab)) != NULL
9969 && (stub_entry->stub_type == ppc_stub_plt_call
9970 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9971 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9972 {
b25116a9 9973 bfd_boolean can_plt_call = FALSE;
721956f4 9974
eea6121a 9975 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9976 {
b25116a9
AM		 9977 unsigned long nop;
9978 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9979 if (nop == NOP
9980 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9981 {
4ce794b7 9982 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9983 contents + rel->r_offset + 4);
b25116a9 9984 can_plt_call = TRUE;
41bd81ab 9985 }
5bd4f169 9986 }
721956f4
AM		 9987
9988 if (!can_plt_call)
9989 {
ad8e1ba5
AM		 9990 if (stub_entry->stub_type == ppc_stub_plt_call)
9991 {
9992 /* If this is a plain branch rather than a branch
9993 and link, don't require a nop. */
b25116a9
AM		 9994 unsigned long br;
9995 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9996 if ((br & 1) == 0)
9997 can_plt_call = TRUE;
ad8e1ba5 9998 }
6ab189d5 9999 else if (h != NULL
039b3fef 10000 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10001 ".__libc_start_main") == 0)
10002 {
10003 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10004 can_plt_call = TRUE;
6ab189d5 10005 }
ad8e1ba5
AM		 10006 else
10007 {
10008 if (strcmp (input_section->output_section->name,
10009 ".init") == 0
10010 || strcmp (input_section->output_section->name,
10011 ".fini") == 0)
10012 (*_bfd_error_handler)
d003868e 10013 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10014 "not supported using your crt files; "
10015 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10016 input_bfd,
10017 input_section,
ad8e1ba5
AM		 10018 (long) rel->r_offset);
10019 else
10020 (*_bfd_error_handler)
d003868e 10021 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10022 "does not allow automatic multiple TOCs; "
10023 "recompile with -mminimal-toc or "
10024 "-fno-optimize-sibling-calls, "
10025 "or make `%s' extern"),
d003868e
AM		 10026 input_bfd,
10027 input_section,
ad8e1ba5
AM		 10028 (long) rel->r_offset,
10029 sym_name,
10030 sym_name);
10031 bfd_set_error (bfd_error_bad_value);
10032 ret = FALSE;
10033 }
721956f4
AM		 10034 }
10035
b25116a9
AM		 10036 if (can_plt_call
10037 && stub_entry->stub_type == ppc_stub_plt_call)
10038 unresolved_reloc = FALSE;
10039 }
10040
8387904d
AM		 10041 if (stub_entry == NULL
10042 && get_opd_info (sec) != NULL)
10043 {
10044 /* The branch destination is the value of the opd entry. */
10045 bfd_vma off = (relocation - sec->output_section->vma
10046 - sec->output_offset + rel->r_addend);
10047 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10048 if (dest != (bfd_vma) -1)
10049 {
10050 relocation = dest;
10051 addend = 0;
10052 }
10053 }
10054
b25116a9
AM		 10055 /* If the branch is out of reach we ought to have a long
10056 branch stub. */
10057 from = (rel->r_offset
10058 + input_section->output_offset
10059 + input_section->output_section->vma);
10060
10061 if (stub_entry == NULL
10062 && (relocation + rel->r_addend - from + max_br_offset
10063 >= 2 * max_br_offset)
10064 && r_type != R_PPC64_ADDR14_BRTAKEN
10065 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10066 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10067 htab);
b25116a9
AM		 10068
10069 if (stub_entry != NULL)
10070 {
10071 /* Munge up the value and addend so that we call the stub
10072 rather than the procedure directly. */
10073 relocation = (stub_entry->stub_offset
10074 + stub_entry->stub_sec->output_offset
10075 + stub_entry->stub_sec->output_section->vma);
10076 addend = 0;
10077 }
10078
10079 if (insn != 0)
10080 {
10081 if (is_power4)
721956f4 10082 {
b25116a9
AM		 10083 /* Set 'a' bit. This is 0b00010 in BO field for branch
10084 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10085 for branch on CTR insns (BO == 1a00t or 1a01t). */
10086 if ((insn & (0x14 << 21)) == (0x04 << 21))
10087 insn |= 0x02 << 21;
10088 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10089 insn |= 0x08 << 21;
10090 else
10091 break;
10092 }
10093 else
10094 {
10095 /* Invert 'y' bit if not the default. */
10096 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10097 insn ^= 0x01 << 21;
721956f4 10098 }
b25116a9
AM		 10099
10100 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10101 }
e86ce104 10102
06da1e8e
AM		 10103 /* NOP out calls to undefined weak functions.
10104 We can thus call a weak function without first
10105 checking whether the function is defined. */
b25116a9 10106 else if (h != NULL
039b3fef 10107 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10108 && r_type == R_PPC64_REL24
10109 && relocation == 0
10110 && rel->r_addend == 0)
e86ce104 10111 {
06da1e8e
AM		 10112 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10113 continue;
e86ce104 10114 }
65f38f15
AM		 10115 break;
10116 }
5bd4f169 10117
65f38f15 10118 /* Set `addend'. */
411e1bfb 10119 tls_type = 0;
65f38f15
AM		 10120 switch (r_type)
10121 {
10122 default:
10123 (*_bfd_error_handler)
d003868e
AM		 10124 (_("%B: unknown relocation type %d for symbol %s"),
10125 input_bfd, (int) r_type, sym_name);
5bd4f169 10126
65f38f15 10127 bfd_set_error (bfd_error_bad_value);
b34976b6 10128 ret = FALSE;
65f38f15 10129 continue;
5bd4f169 10130
65f38f15 10131 case R_PPC64_NONE:
411e1bfb 10132 case R_PPC64_TLS:
04c9666a
AM		 10133 case R_PPC64_GNU_VTINHERIT:
10134 case R_PPC64_GNU_VTENTRY:
65f38f15 10135 continue;
5bd4f169
AM		 10136
10137 /* GOT16 relocations. Like an ADDR16 using the symbol's
10138 address in the GOT as relocation value instead of the
411e1bfb 10139 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10140 symbol and put the symbol value there. */
411e1bfb
AM		 10141 case R_PPC64_GOT_TLSGD16:
10142 case R_PPC64_GOT_TLSGD16_LO:
10143 case R_PPC64_GOT_TLSGD16_HI:
10144 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10145 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10146 goto dogot;
10147
10148 case R_PPC64_GOT_TLSLD16:
10149 case R_PPC64_GOT_TLSLD16_LO:
10150 case R_PPC64_GOT_TLSLD16_HI:
10151 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10152 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10153 goto dogot;
10154
10155 case R_PPC64_GOT_TPREL16_DS:
10156 case R_PPC64_GOT_TPREL16_LO_DS:
10157 case R_PPC64_GOT_TPREL16_HI:
10158 case R_PPC64_GOT_TPREL16_HA:
10159 tls_type = TLS_TLS | TLS_TPREL;
10160 goto dogot;
10161
10162 case R_PPC64_GOT_DTPREL16_DS:
10163 case R_PPC64_GOT_DTPREL16_LO_DS:
10164 case R_PPC64_GOT_DTPREL16_HI:
10165 case R_PPC64_GOT_DTPREL16_HA:
10166 tls_type = TLS_TLS | TLS_DTPREL;
10167 goto dogot;
10168
65f38f15
AM		 10169 case R_PPC64_GOT16:
10170 case R_PPC64_GOT16_LO:
10171 case R_PPC64_GOT16_HI:
10172 case R_PPC64_GOT16_HA:
10173 case R_PPC64_GOT16_DS:
10174 case R_PPC64_GOT16_LO_DS:
411e1bfb 10175 dogot:
5bd4f169
AM		 10176 {
10177 /* Relocation is to the entry for this symbol in the global
10178 offset table. */
e717da7e 10179 asection *got;
d881513a 10180 bfd_vma *offp;
5bd4f169 10181 bfd_vma off;
d881513a 10182 unsigned long indx = 0;
65f38f15 10183
d881513a
AM		 10184 if (tls_type == (TLS_TLS | TLS_LD)
10185 && (h == NULL
f5385ebf 10186 || !h->elf.def_dynamic))
e717da7e 10187 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10188 else
5bd4f169 10189 {
d881513a 10190 struct got_entry *ent;
5bd4f169 10191
d881513a
AM		 10192 if (h != NULL)
10193 {
10194 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10195 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10196 &h->elf)
d881513a 10197 || (info->shared
039b3fef 10198 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10199 /* This is actually a static link, or it is a
10200 -Bsymbolic link and the symbol is defined
10201 locally, or the symbol was forced to be local
10202 because of a version file. */
10203 ;
10204 else
10205 {
039b3fef 10206 indx = h->elf.dynindx;
d881513a
AM		 10207 unresolved_reloc = FALSE;
10208 }
039b3fef 10209 ent = h->elf.got.glist;
d881513a 10210 }
411e1bfb 10211 else
5bd4f169 10212 {
d881513a
AM		 10213 if (local_got_ents == NULL)
10214 abort ();
10215 ent = local_got_ents[r_symndx];
5bd4f169 10216 }
d881513a
AM		 10217
10218 for (; ent != NULL; ent = ent->next)
10219 if (ent->addend == rel->r_addend
e717da7e 10220 && ent->owner == input_bfd
d881513a
AM		 10221 && ent->tls_type == tls_type)
10222 break;
10223 if (ent == NULL)
10224 abort ();
10225 offp = &ent->got.offset;
5bd4f169 10226 }
411e1bfb 10227
e717da7e
AM		 10228 got = ppc64_elf_tdata (input_bfd)->got;
10229 if (got == NULL)
10230 abort ();
10231
411e1bfb
AM		 10232 /* The offset must always be a multiple of 8. We use the
10233 least significant bit to record whether we have already
10234 processed this entry. */
d881513a 10235 off = *offp;
411e1bfb
AM		 10236 if ((off & 1) != 0)
10237 off &= ~1;
5bd4f169
AM		 10238 else
10239 {
411e1bfb
AM		 10240 /* Generate relocs for the dynamic linker, except in
10241 the case of TLSLD where we'll use one entry per
10242 module. */
e717da7e
AM		 10243 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10244
d881513a 10245 *offp = off | 1;
4e795f50
AM		 10246 if ((info->shared || indx != 0)
10247 && (h == NULL
039b3fef
AM		 10248 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10249 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10250 {
e717da7e
AM		 10251 outrel.r_offset = (got->output_section->vma
10252 + got->output_offset
411e1bfb 10253 + off);
81407a69 10254 outrel.r_addend = rel->r_addend;
d881513a 10255 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10256 {
411e1bfb 10257 outrel.r_addend = 0;
e515b051 10258 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10259 if (tls_type == (TLS_TLS | TLS_GD))
10260 {
e717da7e
AM		 10261 loc = relgot->contents;
10262 loc += (relgot->reloc_count++
d881513a
AM		 10263 * sizeof (Elf64_External_Rela));
10264 bfd_elf64_swap_reloca_out (output_bfd,
10265 &outrel, loc);
e515b051 10266 outrel.r_offset += 8;
81407a69 10267 outrel.r_addend = rel->r_addend;
d881513a
AM		 10268 outrel.r_info
10269 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10270 }
411e1bfb 10271 }
951fd09b 10272 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10273 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10274 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10275 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10276 else if (indx == 0)
81407a69
AM		 10277 {
10278 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10279
10280 /* Write the .got section contents for the sake
10281 of prelink. */
e717da7e 10282 loc = got->contents + off;
23fbd6fa
JJ		 10283 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10284 loc);
81407a69 10285 }
411e1bfb
AM		 10286 else
10287 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10288
10289 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10290 {
10291 outrel.r_addend += relocation;
10292 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10293 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10294 }
e717da7e
AM		 10295 loc = relgot->contents;
10296 loc += (relgot->reloc_count++
411e1bfb
AM		 10297 * sizeof (Elf64_External_Rela));
10298 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10299 }
10300
ad8e1ba5 10301 /* Init the .got section contents here if we're not
81407a69 10302 emitting a reloc. */
d881513a 10303 else
411e1bfb 10304 {
d881513a 10305 relocation += rel->r_addend;
7b609f53
AM		 10306 if (tls_type == (TLS_TLS | TLS_LD))
10307 relocation = 1;
10308 else if (tls_type != 0)
411e1bfb 10309 {
e1918d23 10310 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10311 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10312 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10313
7b609f53
AM		 10314 if (tls_type == (TLS_TLS | TLS_GD))
10315 {
10316 bfd_put_64 (output_bfd, relocation,
e717da7e 10317 got->contents + off + 8);
7b609f53
AM		 10318 relocation = 1;
10319 }
411e1bfb 10320 }
7b609f53 10321
411e1bfb 10322 bfd_put_64 (output_bfd, relocation,
e717da7e 10323 got->contents + off);
5bd4f169
AM		 10324 }
10325 }
10326
65f38f15
AM		 10327 if (off >= (bfd_vma) -2)
10328 abort ();
10329
e717da7e 10330 relocation = got->output_offset + off;
65f38f15 10331
5bd4f169 10332 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10333 addend = -TOC_BASE_OFF;
5bd4f169 10334 }
65f38f15
AM		 10335 break;
10336
10337 case R_PPC64_PLT16_HA:
10338 case R_PPC64_PLT16_HI:
10339 case R_PPC64_PLT16_LO:
10340 case R_PPC64_PLT32:
10341 case R_PPC64_PLT64:
10342 /* Relocation is to the entry for this symbol in the
10343 procedure linkage table. */
10344
10345 /* Resolve a PLT reloc against a local symbol directly,
10346 without using the procedure linkage table. */
10347 if (h == NULL)
10348 break;
10349
411e1bfb
AM		 10350 /* It's possible that we didn't make a PLT entry for this
10351 symbol. This happens when statically linking PIC code,
10352 or when using -Bsymbolic. Go find a match if there is a
10353 PLT entry. */
4ce794b7 10354 if (htab->plt != NULL)
65f38f15 10355 {
411e1bfb 10356 struct plt_entry *ent;
039b3fef 10357 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10358 if (ent->addend == rel->r_addend
10359 && ent->plt.offset != (bfd_vma) -1)
10360 {
4ce794b7
AM		 10361 relocation = (htab->plt->output_section->vma
10362 + htab->plt->output_offset
411e1bfb
AM		 10363 + ent->plt.offset);
10364 unresolved_reloc = FALSE;
10365 }
65f38f15 10366 }
65f38f15 10367 break;
5bd4f169 10368
0b13192e
AM		 10369 case R_PPC64_TOC:
10370 /* Relocation value is TOC base. */
10371 relocation = TOCstart;
10372 if (r_symndx == 0)
10373 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10374 else if (unresolved_reloc)
10375 ;
10376 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10377 relocation += htab->stub_group[sec->id].toc_off;
10378 else
10379 unresolved_reloc = TRUE;
10380 goto dodyn2;
10381
5bd4f169
AM		 10382 /* TOC16 relocs. We want the offset relative to the TOC base,
10383 which is the address of the start of the TOC plus 0x8000.
10384 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10385 in this order. */
65f38f15
AM		 10386 case R_PPC64_TOC16:
10387 case R_PPC64_TOC16_LO:
10388 case R_PPC64_TOC16_HI:
10389 case R_PPC64_TOC16_DS:
10390 case R_PPC64_TOC16_LO_DS:
10391 case R_PPC64_TOC16_HA:
ad8e1ba5 10392 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10393 break;
10394
10395 /* Relocate against the beginning of the section. */
65f38f15
AM		 10396 case R_PPC64_SECTOFF:
10397 case R_PPC64_SECTOFF_LO:
10398 case R_PPC64_SECTOFF_HI:
10399 case R_PPC64_SECTOFF_DS:
10400 case R_PPC64_SECTOFF_LO_DS:
10401 case R_PPC64_SECTOFF_HA:
4ce794b7 10402 if (sec != NULL)
65f38f15 10403 addend -= sec->output_section->vma;
5bd4f169
AM		 10404 break;
10405
721956f4
AM		 10406 case R_PPC64_REL14:
10407 case R_PPC64_REL14_BRNTAKEN:
10408 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10409 case R_PPC64_REL24:
10410 break;
10411
411e1bfb
AM		 10412 case R_PPC64_TPREL16:
10413 case R_PPC64_TPREL16_LO:
10414 case R_PPC64_TPREL16_HI:
10415 case R_PPC64_TPREL16_HA:
10416 case R_PPC64_TPREL16_DS:
10417 case R_PPC64_TPREL16_LO_DS:
10418 case R_PPC64_TPREL16_HIGHER:
10419 case R_PPC64_TPREL16_HIGHERA:
10420 case R_PPC64_TPREL16_HIGHEST:
10421 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10422 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10423 if (info->shared)
10424 /* The TPREL16 relocs shouldn't really be used in shared
10425 libs as they will result in DT_TEXTREL being set, but
10426 support them anyway. */
10427 goto dodyn;
10428 break;
10429
10430 case R_PPC64_DTPREL16:
10431 case R_PPC64_DTPREL16_LO:
10432 case R_PPC64_DTPREL16_HI:
10433 case R_PPC64_DTPREL16_HA:
10434 case R_PPC64_DTPREL16_DS:
10435 case R_PPC64_DTPREL16_LO_DS:
10436 case R_PPC64_DTPREL16_HIGHER:
10437 case R_PPC64_DTPREL16_HIGHERA:
10438 case R_PPC64_DTPREL16_HIGHEST:
10439 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10440 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10441 break;
10442
e515b051
AM		 10443 case R_PPC64_DTPMOD64:
10444 relocation = 1;
10445 addend = 0;
10446 goto dodyn;
10447
411e1bfb 10448 case R_PPC64_TPREL64:
e1918d23 10449 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10450 goto dodyn;
10451
10452 case R_PPC64_DTPREL64:
e1918d23 10453 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10454 /* Fall thru */
10455
65f38f15
AM		 10456 /* Relocations that may need to be propagated if this is a
10457 dynamic object. */
04c9666a 10458 case R_PPC64_REL30:
65f38f15
AM		 10459 case R_PPC64_REL32:
10460 case R_PPC64_REL64:
10461 case R_PPC64_ADDR14:
10462 case R_PPC64_ADDR14_BRNTAKEN:
10463 case R_PPC64_ADDR14_BRTAKEN:
10464 case R_PPC64_ADDR16:
10465 case R_PPC64_ADDR16_DS:
10466 case R_PPC64_ADDR16_HA:
10467 case R_PPC64_ADDR16_HI:
10468 case R_PPC64_ADDR16_HIGHER:
10469 case R_PPC64_ADDR16_HIGHERA:
10470 case R_PPC64_ADDR16_HIGHEST:
10471 case R_PPC64_ADDR16_HIGHESTA:
10472 case R_PPC64_ADDR16_LO:
10473 case R_PPC64_ADDR16_LO_DS:
10474 case R_PPC64_ADDR24:
65f38f15
AM		 10475 case R_PPC64_ADDR32:
10476 case R_PPC64_ADDR64:
10477 case R_PPC64_UADDR16:
10478 case R_PPC64_UADDR32:
10479 case R_PPC64_UADDR64:
ec338859
AM		 10480 /* r_symndx will be zero only for relocs against symbols
10481 from removed linkonce sections, or sections discarded by
10482 a linker script. */
411e1bfb 10483 dodyn:
5d1634d7
AM		 10484 if (r_symndx == 0)
10485 break;
10486 /* Fall thru. */
10487
0b13192e 10488 dodyn2:
5d1634d7 10489 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10490 break;
10491
41bd81ab
AM		 10492 if (NO_OPD_RELOCS && is_opd)
10493 break;
10494
65f38f15 10495 if ((info->shared
4e795f50 10496 && (h == NULL
039b3fef
AM		 10497 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10498 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10499 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10500 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10501 || (ELIMINATE_COPY_RELOCS
10502 && !info->shared
65f38f15 10503 && h != NULL
039b3fef 10504 && h->elf.dynindx != -1
f5385ebf
AM		 10505 && !h->elf.non_got_ref
10506 && h->elf.def_dynamic
10507 && !h->elf.def_regular))
65f38f15
AM		 10508 {
10509 Elf_Internal_Rela outrel;
b34976b6 10510 bfd_boolean skip, relocate;
65f38f15 10511 asection *sreloc;
947216bf 10512 bfd_byte *loc;
1cf1f670 10513 bfd_vma out_off;
65f38f15
AM		 10514
10515 /* When generating a dynamic object, these relocations
10516 are copied into the output file to be resolved at run
10517 time. */
10518
b34976b6
AM		 10519 skip = FALSE;
10520 relocate = FALSE;
65f38f15 10521
1cf1f670
AM		 10522 out_off = _bfd_elf_section_offset (output_bfd, info,
10523 input_section, rel->r_offset);
10524 if (out_off == (bfd_vma) -1)
b34976b6 10525 skip = TRUE;
1cf1f670 10526 else if (out_off == (bfd_vma) -2)
b34976b6 10527 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10528 out_off += (input_section->output_section->vma
10529 + input_section->output_offset);
10530 outrel.r_offset = out_off;
411e1bfb 10531 outrel.r_addend = rel->r_addend;
65f38f15 10532
1cf1f670
AM		 10533 /* Optimize unaligned reloc use. */
10534 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10535 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10536 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10537 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10538 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10539 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10540 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10541 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10542 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10543
65f38f15 10544 if (skip)
0bb2d96a 10545 memset (&outrel, 0, sizeof outrel);
039b3fef 10546 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10547 && !is_opd
10548 && r_type != R_PPC64_TOC)
039b3fef 10549 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10550 else
10551 {
41bd81ab
AM		 10552 /* This symbol is local, or marked to become local,
10553 or this is an opd section reloc which must point
10554 at a local function. */
65f38f15 10555 outrel.r_addend += relocation;
e86ce104 10556 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10557 {
3fad3c7c 10558 if (is_opd && h != NULL)
afbe61cf
AM		 10559 {
10560 /* Lie about opd entries. This case occurs
10561 when building shared libraries and we
10562 reference a function in another shared
3fad3c7c
AM		 10563 lib. The same thing happens for a weak
10564 definition in an application that's
10565 overridden by a strong definition in a
10566 shared lib. (I believe this is a generic
10567 bug in binutils handling of weak syms.)
10568 In these cases we won't use the opd
1e2f5b6e 10569 entry in this lib. */
b34976b6 10570 unresolved_reloc = FALSE;
afbe61cf 10571 }
65f38f15 10572 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10573
10574 /* We need to relocate .opd contents for ld.so.
10575 Prelink also wants simple and consistent rules
10576 for relocs. This make all RELATIVE relocs have
10577 *r_offset equal to r_addend. */
10578 relocate = TRUE;
65f38f15
AM		 10579 }
10580 else
10581 {
10582 long indx = 0;
10583
41bd81ab 10584 if (bfd_is_abs_section (sec))
65f38f15
AM		 10585 ;
10586 else if (sec == NULL || sec->owner == NULL)
10587 {
10588 bfd_set_error (bfd_error_bad_value);
b34976b6 10589 return FALSE;
65f38f15
AM		 10590 }
10591 else
10592 {
10593 asection *osec;
10594
10595 osec = sec->output_section;
10596 indx = elf_section_data (osec)->dynindx;
10597
10598 /* We are turning this relocation into one
10599 against a section symbol, so subtract out
10600 the output section's address but not the
10601 offset of the input section in the output
10602 section. */
10603 outrel.r_addend -= osec->vma;
10604 }
10605
10606 outrel.r_info = ELF64_R_INFO (indx, r_type);
10607 }
10608 }
10609
10610 sreloc = elf_section_data (input_section)->sreloc;
10611 if (sreloc == NULL)
10612 abort ();
10613
947216bf
AM		 10614 loc = sreloc->contents;
10615 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10616 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10617
10618 /* If this reloc is against an external symbol, it will
10619 be computed at runtime, so there's no need to do
81407a69
AM		 10620 anything now. However, for the sake of prelink ensure
10621 that the section contents are a known value. */
65f38f15 10622 if (! relocate)
81407a69
AM		 10623 {
10624 unresolved_reloc = FALSE;
10625 /* The value chosen here is quite arbitrary as ld.so
10626 ignores section contents except for the special
10627 case of .opd where the contents might be accessed
10628 before relocation. Choose zero, as that won't
10629 cause reloc overflow. */
10630 relocation = 0;
10631 addend = 0;
10632 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10633 to improve backward compatibility with older
10634 versions of ld. */
10635 if (r_type == R_PPC64_ADDR64)
10636 addend = outrel.r_addend;
10637 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10638 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10639 addend = (input_section->output_section->vma
10640 + input_section->output_offset
10641 + rel->r_offset);
81407a69 10642 }
65f38f15 10643 }
5bd4f169
AM		 10644 break;
10645
65f38f15
AM		 10646 case R_PPC64_COPY:
10647 case R_PPC64_GLOB_DAT:
10648 case R_PPC64_JMP_SLOT:
10649 case R_PPC64_RELATIVE:
10650 /* We shouldn't ever see these dynamic relocs in relocatable
10651 files. */
ae9a127f 10652 /* Fall through. */
65f38f15
AM		 10653
10654 case R_PPC64_PLTGOT16:
10655 case R_PPC64_PLTGOT16_DS:
10656 case R_PPC64_PLTGOT16_HA:
10657 case R_PPC64_PLTGOT16_HI:
10658 case R_PPC64_PLTGOT16_LO:
10659 case R_PPC64_PLTGOT16_LO_DS:
10660 case R_PPC64_PLTREL32:
10661 case R_PPC64_PLTREL64:
10662 /* These ones haven't been implemented yet. */
10663
10664 (*_bfd_error_handler)
d003868e
AM		 10665 (_("%B: relocation %s is not supported for symbol %s."),
10666 input_bfd,
4ce794b7 10667 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10668
10669 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10670 ret = FALSE;
5bd4f169 10671 continue;
65f38f15 10672 }
5bd4f169 10673
65f38f15
AM		 10674 /* Do any further special processing. */
10675 switch (r_type)
10676 {
10677 default:
10678 break;
10679
10680 case R_PPC64_ADDR16_HA:
10681 case R_PPC64_ADDR16_HIGHERA:
10682 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10683 case R_PPC64_GOT16_HA:
10684 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10685 case R_PPC64_PLT16_HA:
10686 case R_PPC64_TOC16_HA:
10687 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10688 case R_PPC64_TPREL16_HA:
10689 case R_PPC64_DTPREL16_HA:
10690 case R_PPC64_GOT_TLSGD16_HA:
10691 case R_PPC64_GOT_TLSLD16_HA:
10692 case R_PPC64_GOT_TPREL16_HA:
10693 case R_PPC64_GOT_DTPREL16_HA:
10694 case R_PPC64_TPREL16_HIGHER:
10695 case R_PPC64_TPREL16_HIGHERA:
10696 case R_PPC64_TPREL16_HIGHEST:
10697 case R_PPC64_TPREL16_HIGHESTA:
10698 case R_PPC64_DTPREL16_HIGHER:
10699 case R_PPC64_DTPREL16_HIGHERA:
10700 case R_PPC64_DTPREL16_HIGHEST:
10701 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10702 /* It's just possible that this symbol is a weak symbol
10703 that's not actually defined anywhere. In that case,
10704 'sec' would be NULL, and we should leave the symbol
10705 alone (it will be set to zero elsewhere in the link). */
10706 if (sec != NULL)
e515b051
AM		 10707 /* Add 0x10000 if sign bit in 0:15 is set.
10708 Bits 0:15 are not used. */
10709 addend += 0x8000;
65f38f15
AM		 10710 break;
10711
10712 case R_PPC64_ADDR16_DS:
10713 case R_PPC64_ADDR16_LO_DS:
10714 case R_PPC64_GOT16_DS:
10715 case R_PPC64_GOT16_LO_DS:
10716 case R_PPC64_PLT16_LO_DS:
10717 case R_PPC64_SECTOFF_DS:
10718 case R_PPC64_SECTOFF_LO_DS:
10719 case R_PPC64_TOC16_DS:
10720 case R_PPC64_TOC16_LO_DS:
10721 case R_PPC64_PLTGOT16_DS:
10722 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10723 case R_PPC64_GOT_TPREL16_DS:
10724 case R_PPC64_GOT_TPREL16_LO_DS:
10725 case R_PPC64_GOT_DTPREL16_DS:
10726 case R_PPC64_GOT_DTPREL16_LO_DS:
10727 case R_PPC64_TPREL16_DS:
10728 case R_PPC64_TPREL16_LO_DS:
10729 case R_PPC64_DTPREL16_DS:
10730 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10731 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10732 mask = 3;
10733 /* If this reloc is against an lq insn, then the value must be
10734 a multiple of 16. This is somewhat of a hack, but the
10735 "correct" way to do this by defining _DQ forms of all the
10736 _DS relocs bloats all reloc switches in this file. It
10737 doesn't seem to make much sense to use any of these relocs
10738 in data, so testing the insn should be safe. */
494dac0c 10739 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10740 mask = 15;
10741 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10742 {
10743 (*_bfd_error_handler)
d003868e
AM		 10744 (_("%B: error: relocation %s not a multiple of %d"),
10745 input_bfd,
4ce794b7 10746 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10747 mask + 1);
65f38f15 10748 bfd_set_error (bfd_error_bad_value);
b34976b6 10749 ret = FALSE;
65f38f15
AM		 10750 continue;
10751 }
10752 break;
5bd4f169
AM		 10753 }
10754
239e1f3a
AM		 10755 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10756 because such sections are not SEC_ALLOC and thus ld.so will
10757 not process them. */
65f38f15 10758 if (unresolved_reloc
239e1f3a 10759 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10760 && h->elf.def_dynamic))
9c07fe7c
AM		 10761 {
10762 (*_bfd_error_handler)
d003868e
AM		 10763 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10764 input_bfd,
10765 input_section,
9c07fe7c 10766 (long) rel->r_offset,
7b609f53 10767 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10768 h->elf.root.root.string);
b34976b6 10769 ret = FALSE;
9c07fe7c 10770 }
5bd4f169 10771
65f38f15 10772 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10773 input_bfd,
10774 input_section,
10775 contents,
411e1bfb 10776 rel->r_offset,
5bd4f169
AM		 10777 relocation,
10778 addend);
10779
ef60b7ff 10780 if (r != bfd_reloc_ok)
5bd4f169 10781 {
cd27b276
AM		 10782 if (sym_name == NULL)
10783 sym_name = "(null)";
10784 if (r == bfd_reloc_overflow)
5bd4f169 10785 {
cd27b276
AM		 10786 if (warned)
10787 continue;
10788 if (h != NULL
039b3fef 10789 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10790 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10791 {
10792 /* Assume this is a call protected by other code that
10793 detects the symbol is undefined. If this is the case,
10794 we can safely ignore the overflow. If not, the
10795 program is hosed anyway, and a little warning isn't
10796 going to help. */
10797
10798 continue;
10799 }
10800
ef60b7ff 10801 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10802 (info, (h ? &h->elf.root : NULL), sym_name,
10803 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10804 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10805 return FALSE;
ef60b7ff
AM		 10806 }
10807 else
10808 {
10809 (*_bfd_error_handler)
d003868e
AM		 10810 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10811 input_bfd,
10812 input_section,
7b609f53 10813 (long) rel->r_offset,
4ce794b7 10814 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10815 sym_name,
10816 (int) r);
b34976b6 10817 ret = FALSE;
ef60b7ff 10818 }
5bd4f169 10819 }
5bd4f169
AM		 10820 }
10821
645ea6a9
AM		 10822 /* If we're emitting relocations, then shortly after this function
10823 returns, reloc offsets and addends for this section will be
10824 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10825 file rather than the input. Save a copy of the relocs for
10826 opd_entry_value. */
10827 if (is_opd && info->emitrelocations)
10828 {
10829 bfd_size_type amt;
10830 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10831 rel = bfd_alloc (input_bfd, amt);
10832 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10833 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10834 if (rel == NULL)
10835 return FALSE;
10836 memcpy (rel, relocs, amt);
10837 }
5bd4f169
AM		 10838 return ret;
10839}
10840
754021d0
AM		 10841/* Adjust the value of any local symbols in opd sections. */
10842
10843static bfd_boolean
10844ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10845 const char *name ATTRIBUTE_UNUSED,
10846 Elf_Internal_Sym *elfsym,
10847 asection *input_sec,
10848 struct elf_link_hash_entry *h)
10849{
4025353c 10850 long *opd_adjust, adjust;
754021d0
AM		 10851 bfd_vma value;
10852
4025353c
AM		 10853 if (h != NULL)
10854 return TRUE;
10855
10856 opd_adjust = get_opd_info (input_sec);
10857 if (opd_adjust == NULL)
754021d0
AM		 10858 return TRUE;
10859
10860 value = elfsym->st_value - input_sec->output_offset;
10861 if (!info->relocatable)
10862 value -= input_sec->output_section->vma;
10863
3f764659 10864 adjust = opd_adjust[value / 8];
4025353c
AM		 10865 if (adjust == -1)
10866 elfsym->st_value = 0;
10867 else
10868 elfsym->st_value += adjust;
754021d0
AM		 10869 return TRUE;
10870}
10871
5bd4f169
AM		 10872/* Finish up dynamic symbol handling. We set the contents of various
10873 dynamic sections here. */
10874
b34976b6 10875static bfd_boolean
4ce794b7
AM		 10876ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10877 struct bfd_link_info *info,
10878 struct elf_link_hash_entry *h,
10879 Elf_Internal_Sym *sym)
5bd4f169 10880{
65f38f15 10881 struct ppc_link_hash_table *htab;
5bd4f169 10882 bfd *dynobj;
8387904d
AM		 10883 struct plt_entry *ent;
10884 Elf_Internal_Rela rela;
10885 bfd_byte *loc;
5bd4f169 10886
65f38f15
AM		 10887 htab = ppc_hash_table (info);
10888 dynobj = htab->elf.dynobj;
5bd4f169 10889
8387904d
AM		 10890 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10891 if (ent->plt.offset != (bfd_vma) -1)
10892 {
10893 /* This symbol has an entry in the procedure linkage
10894 table. Set it up. */
10895
10896 if (htab->plt == NULL
10897 || htab->relplt == NULL
10898 || htab->glink == NULL)
10899 abort ();
10900
10901 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10902 fill in the PLT entry. */
10903 rela.r_offset = (htab->plt->output_section->vma
10904 + htab->plt->output_offset
10905 + ent->plt.offset);
10906 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10907 rela.r_addend = ent->addend;
10908
10909 loc = htab->relplt->contents;
10910 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10911 * sizeof (Elf64_External_Rela));
10912 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10913 }
5bd4f169 10914
f5385ebf 10915 if (h->needs_copy)
5bd4f169 10916 {
5bd4f169 10917 Elf_Internal_Rela rela;
947216bf 10918 bfd_byte *loc;
5bd4f169 10919
65f38f15 10920 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10921
65f38f15
AM		 10922 if (h->dynindx == -1
10923 || (h->root.type != bfd_link_hash_defined
10924 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10925 || htab->relbss == NULL)
65f38f15 10926 abort ();
5bd4f169
AM		 10927
10928 rela.r_offset = (h->root.u.def.value
10929 + h->root.u.def.section->output_section->vma
10930 + h->root.u.def.section->output_offset);
10931 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10932 rela.r_addend = 0;
4ce794b7
AM		 10933 loc = htab->relbss->contents;
10934 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10935 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10936 }
10937
5bd4f169
AM		 10938 /* Mark some specially defined symbols as absolute. */
10939 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10940 sym->st_shndx = SHN_ABS;
10941
b34976b6 10942 return TRUE;
5bd4f169
AM		 10943}
10944
65f38f15
AM		 10945/* Used to decide how to sort relocs in an optimal manner for the
10946 dynamic linker, before writing them out. */
10947
10948static enum elf_reloc_type_class
4ce794b7 10949ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10950{
04c9666a 10951 enum elf_ppc64_reloc_type r_type;
a33d1f77 10952
4ce794b7 10953 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10954 switch (r_type)
65f38f15
AM		 10955 {
10956 case R_PPC64_RELATIVE:
10957 return reloc_class_relative;
10958 case R_PPC64_JMP_SLOT:
10959 return reloc_class_plt;
10960 case R_PPC64_COPY:
10961 return reloc_class_copy;
10962 default:
10963 return reloc_class_normal;
10964 }
10965}
10966
5bd4f169
AM		 10967/* Finish up the dynamic sections. */
10968
b34976b6 10969static bfd_boolean
4ce794b7
AM		 10970ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10971 struct bfd_link_info *info)
5bd4f169 10972{
65f38f15
AM		 10973 struct ppc_link_hash_table *htab;
10974 bfd *dynobj;
5bd4f169 10975 asection *sdyn;
5bd4f169 10976
65f38f15
AM		 10977 htab = ppc_hash_table (info);
10978 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10979 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10980
65f38f15 10981 if (htab->elf.dynamic_sections_created)
5bd4f169 10982 {
5bd4f169
AM		 10983 Elf64_External_Dyn *dyncon, *dynconend;
10984
4ce794b7 10985 if (sdyn == NULL || htab->got == NULL)
65f38f15 10986 abort ();
5bd4f169
AM		 10987
10988 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 10989 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 10990 for (; dyncon < dynconend; dyncon++)
10991 {
10992 Elf_Internal_Dyn dyn;
19397422 10993 asection *s;
5bd4f169
AM		 10994
10995 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10996
10997 switch (dyn.d_tag)
10998 {
65f38f15
AM		 10999 default:
11000 continue;
5bd4f169 11001
5d1634d7 11002 case DT_PPC64_GLINK:
4ce794b7 11003 s = htab->glink;
6348e046 11004 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11005 /* We stupidly defined DT_PPC64_GLINK to be the start
11006 of glink rather than the first entry point, which is
11007 what ld.so needs, and now have a bigger stub to
11008 support automatic multiple TOCs. */
11009 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11010 break;
11011
19397422
AM		 11012 case DT_PPC64_OPD:
11013 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11014 if (s == NULL)
11015 continue;
11016 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11017 break;
11018
11019 case DT_PPC64_OPDSZ:
11020 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11021 if (s == NULL)
11022 continue;
eea6121a 11023 dyn.d_un.d_val = s->size;
19397422
AM		 11024 break;
11025
65f38f15 11026 case DT_PLTGOT:
4ce794b7 11027 s = htab->plt;
6348e046 11028 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11029 break;
11030
11031 case DT_JMPREL:
4ce794b7 11032 s = htab->relplt;
6348e046 11033 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11034 break;
5bd4f169 11035
65f38f15 11036 case DT_PLTRELSZ:
eea6121a 11037 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11038 break;
11039
11040 case DT_RELASZ:
11041 /* Don't count procedure linkage table relocs in the
11042 overall reloc count. */
4ce794b7 11043 s = htab->relplt;
6348e046
AM		 11044 if (s == NULL)
11045 continue;
eea6121a 11046 dyn.d_un.d_val -= s->size;
6348e046
AM		 11047 break;
11048
11049 case DT_RELA:
11050 /* We may not be using the standard ELF linker script.
11051 If .rela.plt is the first .rela section, we adjust
11052 DT_RELA to not include it. */
4ce794b7 11053 s = htab->relplt;
6348e046
AM		 11054 if (s == NULL)
11055 continue;
11056 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11057 continue;
eea6121a 11058 dyn.d_un.d_ptr += s->size;
65f38f15 11059 break;
5bd4f169 11060 }
5bd4f169 11061
65f38f15 11062 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11063 }
5bd4f169
AM		 11064 }
11065
eea6121a 11066 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11067 {
11068 /* Fill in the first entry in the global offset table.
11069 We use it to hold the link-time TOCbase. */
11070 bfd_put_64 (output_bfd,
60ee0d4a 11071 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11072 htab->got->contents);
5d1634d7
AM		 11073
11074 /* Set .got entry size. */
4ce794b7 11075 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11076 }
11077
eea6121a 11078 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11079 {
11080 /* Set .plt entry size. */
4ce794b7 11081 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11082 = PLT_ENTRY_SIZE;
11083 }
11084
e717da7e 11085 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11086 since we didn't add them to DYNOBJ. We know dynobj is the first
11087 bfd. */
e717da7e
AM		 11088 while ((dynobj = dynobj->link_next) != NULL)
11089 {
11090 asection *s;
7b53ace3 11091
ee75fd95 11092 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11093 continue;
11094
e717da7e
AM		 11095 s = ppc64_elf_tdata (dynobj)->got;
11096 if (s != NULL
eea6121a 11097 && s->size != 0
e717da7e
AM		 11098 && s->output_section != bfd_abs_section_ptr
11099 && !bfd_set_section_contents (output_bfd, s->output_section,
11100 s->contents, s->output_offset,
eea6121a 11101 s->size))
e717da7e
AM		 11102 return FALSE;
11103 s = ppc64_elf_tdata (dynobj)->relgot;
11104 if (s != NULL
eea6121a 11105 && s->size != 0
e717da7e
AM		 11106 && s->output_section != bfd_abs_section_ptr
11107 && !bfd_set_section_contents (output_bfd, s->output_section,
11108 s->contents, s->output_offset,
eea6121a 11109 s->size))
e717da7e
AM		 11110 return FALSE;
11111 }
f6c52c13 11112
b34976b6 11113 return TRUE;
5bd4f169
AM		 11114}
11115
5bd4f169 11116#include "elf64-target.h"
GDB Binutils - Deliverables
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