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* config/tc-ppc.c (parse_cpu): Handle "-mpower5".
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
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
2f89ff8d 103#define elf_backend_special_sections ppc64_elf_special_sections
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
AM		 2119 type = ELF64_R_TYPE (dst->r_info);
2120 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])));
2122 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2123}
2124
04c9666a 2125/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2126
2127static bfd_reloc_status_type
4ce794b7
AM		 2128ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2129 void *data, asection *input_section,
2130 bfd *output_bfd, char **error_message)
5bd4f169 2131{
805fc799
AM		 2132 /* If this is a relocatable link (output_bfd test tells us), just
2133 call the generic function. Any adjustment will be done at final
2134 link time. */
2135 if (output_bfd != NULL)
cedb70c5 2136 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2137 input_section, output_bfd, error_message);
2138
2139 /* Adjust the addend for sign extension of the low 16 bits.
2140 We won't actually be using the low 16 bits, so trashing them
2141 doesn't matter. */
2142 reloc_entry->addend += 0x8000;
2143 return bfd_reloc_continue;
2144}
5bd4f169 2145
2441e016
AM		 2146static bfd_reloc_status_type
2147ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2148 void *data, asection *input_section,
2149 bfd *output_bfd, char **error_message)
2150{
2151 if (output_bfd != NULL)
2152 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2153 input_section, output_bfd, error_message);
2154
699733f6
AM		 2155 if (strcmp (symbol->section->name, ".opd") == 0
2156 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2157 {
2158 bfd_vma dest = opd_entry_value (symbol->section,
2159 symbol->value + reloc_entry->addend,
2160 NULL, NULL);
2161 if (dest != (bfd_vma) -1)
2162 reloc_entry->addend = dest - (symbol->value
2163 + symbol->section->output_section->vma
2164 + symbol->section->output_offset);
2165 }
2166 return bfd_reloc_continue;
2167}
2168
805fc799 2169static bfd_reloc_status_type
4ce794b7
AM		 2170ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2171 void *data, asection *input_section,
2172 bfd *output_bfd, char **error_message)
805fc799
AM		 2173{
2174 long insn;
04c9666a 2175 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2176 bfd_size_type octets;
2177 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2178 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2179
2180 /* If this is a relocatable link (output_bfd test tells us), just
2181 call the generic function. Any adjustment will be done at final
2182 link time. */
5bd4f169 2183 if (output_bfd != NULL)
cedb70c5 2184 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2185 input_section, output_bfd, error_message);
2186
2187 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2188 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2189 insn &= ~(0x01 << 21);
4ce794b7 2190 r_type = reloc_entry->howto->type;
805fc799
AM		 2191 if (r_type == R_PPC64_ADDR14_BRTAKEN
2192 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2193 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2194
2195 if (is_power4)
5bd4f169 2196 {
805fc799
AM		 2197 /* Set 'a' bit. This is 0b00010 in BO field for branch
2198 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2199 for branch on CTR insns (BO == 1a00t or 1a01t). */
2200 if ((insn & (0x14 << 21)) == (0x04 << 21))
2201 insn |= 0x02 << 21;
2202 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2203 insn |= 0x08 << 21;
2204 else
2441e016 2205 goto out;
5bd4f169 2206 }
805fc799
AM		 2207 else
2208 {
2209 bfd_vma target = 0;
2210 bfd_vma from;
5bd4f169 2211
805fc799
AM		 2212 if (!bfd_is_com_section (symbol->section))
2213 target = symbol->value;
2214 target += symbol->section->output_section->vma;
2215 target += symbol->section->output_offset;
2216 target += reloc_entry->addend;
5bd4f169 2217
805fc799
AM		 2218 from = (reloc_entry->address
2219 + input_section->output_offset
2220 + input_section->output_section->vma);
5bd4f169 2221
805fc799
AM		 2222 /* Invert 'y' bit if not the default. */
2223 if ((bfd_signed_vma) (target - from) < 0)
2224 insn ^= 0x01 << 21;
2225 }
4ce794b7 2226 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2227 out:
2228 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2229 input_section, output_bfd, error_message);
805fc799 2230}
5bd4f169 2231
805fc799 2232static bfd_reloc_status_type
4ce794b7
AM		 2233ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2234 void *data, asection *input_section,
2235 bfd *output_bfd, char **error_message)
805fc799
AM		 2236{
2237 /* If this is a relocatable link (output_bfd test tells us), just
2238 call the generic function. Any adjustment will be done at final
2239 link time. */
2240 if (output_bfd != NULL)
cedb70c5 2241 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2242 input_section, output_bfd, error_message);
5bd4f169 2243
805fc799
AM		 2244 /* Subtract the symbol section base address. */
2245 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2246 return bfd_reloc_continue;
2247}
2248
805fc799 2249static bfd_reloc_status_type
4ce794b7
AM		 2250ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2251 void *data, asection *input_section,
2252 bfd *output_bfd, char **error_message)
805fc799
AM		 2253{
2254 /* If this is a relocatable link (output_bfd test tells us), just
2255 call the generic function. Any adjustment will be done at final
2256 link time. */
2257 if (output_bfd != NULL)
cedb70c5 2258 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2259 input_section, output_bfd, error_message);
2260
2261 /* Subtract the symbol section base address. */
2262 reloc_entry->addend -= symbol->section->output_section->vma;
2263
2264 /* Adjust the addend for sign extension of the low 16 bits. */
2265 reloc_entry->addend += 0x8000;
2266 return bfd_reloc_continue;
2267}
2268
2269static bfd_reloc_status_type
4ce794b7
AM		 2270ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2271 void *data, asection *input_section,
2272 bfd *output_bfd, char **error_message)
805fc799
AM		 2273{
2274 bfd_vma TOCstart;
2275
2276 /* If this is a relocatable link (output_bfd test tells us), just
2277 call the generic function. Any adjustment will be done at final
2278 link time. */
2279 if (output_bfd != NULL)
cedb70c5 2280 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2281 input_section, output_bfd, error_message);
2282
2283 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2284 if (TOCstart == 0)
2285 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2286
2287 /* Subtract the TOC base address. */
2288 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2289 return bfd_reloc_continue;
2290}
2291
2292static bfd_reloc_status_type
4ce794b7
AM		 2293ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
805fc799
AM		 2296{
2297 bfd_vma TOCstart;
2298
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2301 link time. */
2302 if (output_bfd != NULL)
cedb70c5 2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2304 input_section, output_bfd, error_message);
2305
2306 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2307 if (TOCstart == 0)
2308 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2309
2310 /* Subtract the TOC base address. */
2311 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2312
2313 /* Adjust the addend for sign extension of the low 16 bits. */
2314 reloc_entry->addend += 0x8000;
2315 return bfd_reloc_continue;
2316}
2317
2318static bfd_reloc_status_type
4ce794b7
AM		 2319ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2320 void *data, asection *input_section,
2321 bfd *output_bfd, char **error_message)
805fc799
AM		 2322{
2323 bfd_vma TOCstart;
2324 bfd_size_type octets;
2325
2326 /* If this is a relocatable link (output_bfd test tells us), just
2327 call the generic function. Any adjustment will be done at final
2328 link time. */
2329 if (output_bfd != NULL)
cedb70c5 2330 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2331 input_section, output_bfd, error_message);
2332
2333 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2334 if (TOCstart == 0)
2335 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2336
2337 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2338 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2339 return bfd_reloc_ok;
2340}
2341
2342static bfd_reloc_status_type
4ce794b7
AM		 2343ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2344 void *data, asection *input_section,
2345 bfd *output_bfd, char **error_message)
805fc799
AM		 2346{
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2349 link time. */
2350 if (output_bfd != NULL)
cedb70c5 2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2352 input_section, output_bfd, error_message);
2353
2354 if (error_message != NULL)
2355 {
2356 static char buf[60];
2357 sprintf (buf, "generic linker can't handle %s",
2358 reloc_entry->howto->name);
2359 *error_message = buf;
2360 }
2361 return bfd_reloc_dangerous;
2362}
2363
e717da7e
AM		 2364struct ppc64_elf_obj_tdata
2365{
2366 struct elf_obj_tdata elf;
2367
2368 /* Shortcuts to dynamic linker sections. */
2369 asection *got;
2370 asection *relgot;
2371
433817dd
AM		 2372 union {
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2376
2377 /* Used when adding symbols. */
2378 bfd_boolean has_dotsym;
2379 } u;
81688140 2380
e717da7e
AM		 2381 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2382 sections means we potentially need one of these for each input bfd. */
2383 union {
2384 bfd_signed_vma refcount;
2385 bfd_vma offset;
2386 } tlsld_got;
8860955f
AM		 2387
2388 /* A copy of relocs before they are modified for --emit-relocs. */
2389 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2390};
2391
2392#define ppc64_elf_tdata(bfd) \
2393 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2394
2395#define ppc64_tlsld_got(bfd) \
2396 (&ppc64_elf_tdata (bfd)->tlsld_got)
2397
2398/* Override the generic function because we store some extras. */
2399
2400static bfd_boolean
2401ppc64_elf_mkobject (bfd *abfd)
2402{
2403 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2404 abfd->tdata.any = bfd_zalloc (abfd, amt);
2405 if (abfd->tdata.any == NULL)
2406 return FALSE;
2407 return TRUE;
2408}
2409
ee75fd95
AM		 2410/* Return 1 if target is one of ours. */
2411
7b53ace3 2412static bfd_boolean
ee75fd95 2413is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2414{
2415 extern const bfd_target bfd_elf64_powerpc_vec;
2416 extern const bfd_target bfd_elf64_powerpcle_vec;
2417
2418 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2419}
2420
feee612b
AM		 2421/* Fix bad default arch selected for a 64 bit input bfd when the
2422 default is 32 bit. */
2423
b34976b6 2424static bfd_boolean
4ce794b7 2425ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2426{
2427 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2428 {
2429 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2430
2431 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2432 {
2433 /* Relies on arch after 32 bit default being 64 bit default. */
2434 abfd->arch_info = abfd->arch_info->next;
2435 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2436 }
2437 }
b34976b6 2438 return TRUE;
feee612b
AM		 2439}
2440
d37c89e5
AM		 2441/* Support for core dump NOTE sections. */
2442
2443static bfd_boolean
2444ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2445{
eea6121a 2446 size_t offset, size;
d37c89e5
AM		 2447
2448 if (note->descsz != 504)
2449 return FALSE;
2450
2451 /* pr_cursig */
2452 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2453
2454 /* pr_pid */
2455 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2456
2457 /* pr_reg */
2458 offset = 112;
eea6121a 2459 size = 384;
d37c89e5
AM		 2460
2461 /* Make a ".reg/999" section. */
2462 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2463 size, note->descpos + offset);
d37c89e5
AM		 2464}
2465
2466static bfd_boolean
2467ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2468{
2469 if (note->descsz != 136)
2470 return FALSE;
2471
2472 elf_tdata (abfd)->core_program
2473 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2474 elf_tdata (abfd)->core_command
2475 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2476
2477 return TRUE;
2478}
2479
5bd4f169
AM		 2480/* Merge backend specific data from an object file to the output
2481 object file when linking. */
2f6d9989 2482
b34976b6 2483static bfd_boolean
4ce794b7 2484ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2485{
5bd4f169
AM		 2486 /* Check if we have the same endianess. */
2487 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2488 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2489 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2490 {
2491 const char *msg;
2492
2493 if (bfd_big_endian (ibfd))
d003868e 2494 msg = _("%B: compiled for a big endian system "
4ce794b7 2495 "and target is little endian");
5bd4f169 2496 else
d003868e 2497 msg = _("%B: compiled for a little endian system "
4ce794b7 2498 "and target is big endian");
5bd4f169 2499
d003868e 2500 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2501
2502 bfd_set_error (bfd_error_wrong_format);
b34976b6 2503 return FALSE;
5bd4f169
AM		 2504 }
2505
b34976b6 2506 return TRUE;
5bd4f169 2507}
f0abc2a1 2508
5d35169e
AM		 2509/* Add extra PPC sections. */
2510
7f4d3958
L		 2511static struct bfd_elf_special_section const
2512 ppc64_special_sections_p[]=
2513{
2514 { ".plt", 4, 0, SHT_NOBITS, 0 },
2515 { NULL, 0, 0, 0, 0 }
2516};
2517
2518static struct bfd_elf_special_section const
2519 ppc64_special_sections_s[]=
5d35169e 2520{
7dcb9820
AM		 2521 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
7f4d3958
L		 2523 { NULL, 0, 0, 0, 0 }
2524};
2525
2526static struct bfd_elf_special_section const
2527 ppc64_special_sections_t[]=
2528{
7dcb9820
AM		 2529 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2530 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2531 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2532 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2533};
2534
7f4d3958
L		 2535static struct bfd_elf_special_section const *
2536 ppc64_elf_special_sections[27]=
2537{
2538 NULL, /* 'a' */
2539 NULL, /* 'b' */
2540 NULL, /* 'c' */
2541 NULL, /* 'd' */
2542 NULL, /* 'e' */
2543 NULL, /* 'f' */
2544 NULL, /* 'g' */
2545 NULL, /* 'h' */
2546 NULL, /* 'i' */
2547 NULL, /* 'j' */
2548 NULL, /* 'k' */
2549 NULL, /* 'l' */
2550 NULL, /* 'm' */
2551 NULL, /* 'n' */
2552 NULL, /* 'o' */
2553 ppc64_special_sections_p, /* 'p' */
2554 NULL, /* 'q' */
2555 NULL, /* 'r' */
2556 ppc64_special_sections_s, /* 's' */
2557 ppc64_special_sections_t, /* 't' */
2558 NULL, /* 'u' */
2559 NULL, /* 'v' */
2560 NULL, /* 'w' */
2561 NULL, /* 'x' */
2562 NULL, /* 'y' */
2563 NULL, /* 'z' */
2564 NULL /* other */
2565};
2566
f0abc2a1
AM		 2567struct _ppc64_elf_section_data
2568{
2569 struct bfd_elf_section_data elf;
411e1bfb
AM		 2570
2571 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2572 union
2573 {
411e1bfb 2574 /* Points to the function code section for local opd entries. */
f0abc2a1 2575 asection **func_sec;
411e1bfb 2576 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2577 long *adjust;
2578 } opd;
411e1bfb
AM		 2579
2580 /* An array for toc sections, indexed by offset/8.
2581 Specifies the relocation symbol index used at a given toc offset. */
2582 unsigned *t_symndx;
f0abc2a1
AM		 2583};
2584
2585#define ppc64_elf_section_data(sec) \
411e1bfb 2586 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2587
2588static bfd_boolean
4ce794b7 2589ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2590{
2591 struct _ppc64_elf_section_data *sdata;
2592 bfd_size_type amt = sizeof (*sdata);
2593
4ce794b7 2594 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2595 if (sdata == NULL)
2596 return FALSE;
4ce794b7 2597 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2598
2599 return _bfd_elf_new_section_hook (abfd, sec);
2600}
4025353c
AM		 2601
2602static void *
2603get_opd_info (asection * sec)
2604{
2605 if (sec != NULL
2606 && ppc64_elf_section_data (sec) != NULL
2607 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2608 return ppc64_elf_section_data (sec)->opd.adjust;
2609 return NULL;
2610}
90e3cdf2
JJ		 2611\f
2612/* Parameters for the qsort hook. */
2613static asection *synthetic_opd;
2614static bfd_boolean synthetic_relocatable;
2615
699733f6 2616/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2617
2618static int
2619compare_symbols (const void *ap, const void *bp)
2620{
2621 const asymbol *a = * (const asymbol **) ap;
2622 const asymbol *b = * (const asymbol **) bp;
2623
699733f6
AM		 2624 /* Section symbols first. */
2625 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2626 return -1;
699733f6 2627 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2628 return 1;
2629
699733f6 2630 /* then .opd symbols. */
90e3cdf2
JJ		 2631 if (a->section == synthetic_opd && b->section != synthetic_opd)
2632 return -1;
2633 if (a->section != synthetic_opd && b->section == synthetic_opd)
2634 return 1;
2635
699733f6 2636 /* then other code symbols. */
90e3cdf2
JJ		 2637 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2638 == (SEC_CODE | SEC_ALLOC)
2639 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2640 != (SEC_CODE | SEC_ALLOC))
2641 return -1;
2642
2643 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2644 != (SEC_CODE | SEC_ALLOC)
2645 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2646 == (SEC_CODE | SEC_ALLOC))
2647 return 1;
2648
2649 if (synthetic_relocatable)
2650 {
2651 if (a->section->id < b->section->id)
2652 return -1;
2653
2654 if (a->section->id > b->section->id)
2655 return 1;
2656 }
2657
2658 if (a->value + a->section->vma < b->value + b->section->vma)
2659 return -1;
2660
2661 if (a->value + a->section->vma > b->value + b->section->vma)
2662 return 1;
2663
2664 return 0;
2665}
2666
699733f6 2667/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2668
699733f6
AM		 2669static asymbol *
2670sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2671{
699733f6 2672 long mid;
90e3cdf2 2673
699733f6
AM		 2674 if (id == -1)
2675 {
2676 while (lo < hi)
2677 {
2678 mid = (lo + hi) >> 1;
2679 if (syms[mid]->value + syms[mid]->section->vma < value)
2680 lo = mid + 1;
2681 else if (syms[mid]->value + syms[mid]->section->vma > value)
2682 hi = mid;
2683 else
2684 return syms[mid];
2685 }
2686 }
2687 else
2688 {
2689 while (lo < hi)
2690 {
2691 mid = (lo + hi) >> 1;
2692 if (syms[mid]->section->id < id)
2693 lo = mid + 1;
2694 else if (syms[mid]->section->id > id)
2695 hi = mid;
2696 else if (syms[mid]->value < value)
2697 lo = mid + 1;
2698 else if (syms[mid]->value > value)
2699 hi = mid;
2700 else
2701 return syms[mid];
2702 }
2703 }
2704 return NULL;
90e3cdf2
JJ		 2705}
2706
699733f6
AM		 2707/* Create synthetic symbols, effectively restoring "dot-symbol" function
2708 entry syms. */
90e3cdf2
JJ		 2709
2710static long
a7535cf3
AM		 2711ppc64_elf_get_synthetic_symtab (bfd *abfd,
2712 long static_count, asymbol **static_syms,
2713 long dyn_count, asymbol **dyn_syms,
c9727e01 2714 asymbol **ret)
90e3cdf2
JJ		 2715{
2716 asymbol *s;
699733f6
AM		 2717 long i;
2718 long count;
90e3cdf2 2719 char *names;
a7535cf3 2720 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2721 asection *opd;
90e3cdf2 2722 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2723 asymbol **syms;
90e3cdf2
JJ		 2724
2725 *ret = NULL;
2726
2727 opd = bfd_get_section_by_name (abfd, ".opd");
2728 if (opd == NULL)
2729 return 0;
2730
a7535cf3 2731 symcount = static_count;
c9727e01 2732 if (!relocatable)
a7535cf3 2733 symcount += dyn_count;
90e3cdf2 2734 if (symcount == 0)
c9727e01 2735 return 0;
90e3cdf2 2736
a7535cf3
AM		 2737 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2738 if (syms == NULL)
7356fed5 2739 return -1;
a7535cf3
AM		 2740
2741 if (!relocatable && static_count != 0 && dyn_count != 0)
2742 {
2743 /* Use both symbol tables. */
2744 memcpy (syms, static_syms, static_count * sizeof (*syms));
2745 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2746 }
2747 else if (!relocatable && static_count == 0)
2748 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2749 else
2750 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2751
90e3cdf2
JJ		 2752 synthetic_opd = opd;
2753 synthetic_relocatable = relocatable;
595da8c5 2754 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2755
c9727e01
AM		 2756 if (!relocatable && symcount > 1)
2757 {
2758 long j;
2759 /* Trim duplicate syms, since we may have merged the normal and
2760 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2761 different values, so trim any with the same value. */
c9727e01
AM		 2762 for (i = 1, j = 1; i < symcount; ++i)
2763 if (syms[i - 1]->value + syms[i - 1]->section->vma
2764 != syms[i]->value + syms[i]->section->vma)
2765 syms[j++] = syms[i];
2766 symcount = j;
2767 }
2768
699733f6
AM		 2769 i = 0;
2770 if (syms[i]->section == opd)
2771 ++i;
2772 codesecsym = i;
90e3cdf2 2773
699733f6
AM		 2774 for (; i < symcount; ++i)
2775 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2776 != (SEC_CODE | SEC_ALLOC))
2777 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2778 break;
2779 codesecsymend = i;
90e3cdf2 2780
699733f6
AM		 2781 for (; i < symcount; ++i)
2782 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2783 break;
2784 secsymend = i;
90e3cdf2 2785
699733f6
AM		 2786 for (; i < symcount; ++i)
2787 if (syms[i]->section != opd)
2788 break;
2789 opdsymend = i;
90e3cdf2 2790
699733f6
AM		 2791 for (; i < symcount; ++i)
2792 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2793 != (SEC_CODE | SEC_ALLOC))
2794 break;
2795 symcount = i;
2796
c9727e01 2797 count = 0;
699733f6 2798 if (opdsymend == secsymend)
c9727e01 2799 goto done;
90e3cdf2 2800
699733f6 2801 if (relocatable)
90e3cdf2 2802 {
699733f6
AM		 2803 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2804 arelent *r;
2805 size_t size;
2806 long relcount;
90e3cdf2 2807
699733f6 2808 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2809 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2810 if (relcount == 0)
c9727e01 2811 goto done;
90e3cdf2 2812
7356fed5
AM		 2813 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2814 {
2815 count = -1;
2816 goto done;
2817 }
2818
699733f6 2819 size = 0;
595da8c5 2820 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2821 {
2822 asymbol *sym;
90e3cdf2 2823
595da8c5 2824 while (r < opd->relocation + relcount
699733f6
AM		 2825 && r->address < syms[i]->value + opd->vma)
2826 ++r;
90e3cdf2 2827
595da8c5 2828 if (r == opd->relocation + relcount)
699733f6 2829 break;
90e3cdf2 2830
699733f6
AM		 2831 if (r->address != syms[i]->value + opd->vma)
2832 continue;
90e3cdf2 2833
699733f6
AM		 2834 if (r->howto->type != R_PPC64_ADDR64)
2835 continue;
90e3cdf2 2836
699733f6
AM		 2837 sym = *r->sym_ptr_ptr;
2838 if (!sym_exists_at (syms, opdsymend, symcount,
2839 sym->section->id, sym->value + r->addend))
2840 {
2841 ++count;
2842 size += sizeof (asymbol);
2843 size += strlen (syms[i]->name) + 2;
2844 }
2845 }
90e3cdf2 2846
699733f6
AM		 2847 s = *ret = bfd_malloc (size);
2848 if (s == NULL)
2849 {
7356fed5 2850 count = -1;
c9727e01 2851 goto done;
699733f6 2852 }
90e3cdf2 2853
699733f6 2854 names = (char *) (s + count);
90e3cdf2 2855
595da8c5 2856 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2857 {
699733f6 2858 asymbol *sym;
90e3cdf2 2859
595da8c5 2860 while (r < opd->relocation + relcount
699733f6
AM		 2861 && r->address < syms[i]->value + opd->vma)
2862 ++r;
90e3cdf2 2863
595da8c5 2864 if (r == opd->relocation + relcount)
699733f6
AM		 2865 break;
2866
2867 if (r->address != syms[i]->value + opd->vma)
2868 continue;
2869
2870 if (r->howto->type != R_PPC64_ADDR64)
2871 continue;
90e3cdf2 2872
699733f6
AM		 2873 sym = *r->sym_ptr_ptr;
2874 if (!sym_exists_at (syms, opdsymend, symcount,
2875 sym->section->id, sym->value + r->addend))
2876 {
2877 size_t len;
2878
2879 *s = *syms[i];
2880 s->section = sym->section;
2881 s->value = sym->value + r->addend;
2882 s->name = names;
2883 *names++ = '.';
2884 len = strlen (syms[i]->name);
2885 memcpy (names, syms[i]->name, len + 1);
2886 names += len + 1;
2887 s++;
2888 }
2889 }
2890 }
2891 else
90e3cdf2 2892 {
699733f6
AM		 2893 bfd_byte *contents;
2894 size_t size;
90e3cdf2 2895
699733f6
AM		 2896 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2897 {
2898 if (contents)
c9727e01
AM		 2899 {
2900 free_contents_and_exit:
2901 free (contents);
2902 }
7356fed5 2903 count = -1;
c9727e01 2904 goto done;
699733f6 2905 }
90e3cdf2 2906
699733f6
AM		 2907 size = 0;
2908 for (i = secsymend; i < opdsymend; ++i)
2909 {
2910 bfd_vma ent;
90e3cdf2 2911
699733f6
AM		 2912 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2913 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2914 {
2915 ++count;
2916 size += sizeof (asymbol);
2917 size += strlen (syms[i]->name) + 2;
2918 }
2919 }
90e3cdf2 2920
699733f6
AM		 2921 s = *ret = bfd_malloc (size);
2922 if (s == NULL)
7356fed5 2923 goto free_contents_and_exit;
90e3cdf2 2924
699733f6 2925 names = (char *) (s + count);
90e3cdf2 2926
699733f6 2927 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2928 {
699733f6 2929 bfd_vma ent;
90e3cdf2 2930
699733f6
AM		 2931 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2932 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2933 {
c9727e01 2934 long lo, hi;
699733f6 2935 size_t len;
c9727e01 2936 asection *sec = abfd->sections;
90e3cdf2 2937
699733f6
AM		 2938 *s = *syms[i];
2939 lo = codesecsym;
2940 hi = codesecsymend;
2941 while (lo < hi)
2942 {
c9727e01 2943 long mid = (lo + hi) >> 1;
699733f6
AM		 2944 if (syms[mid]->section->vma < ent)
2945 lo = mid + 1;
2946 else if (syms[mid]->section->vma > ent)
2947 hi = mid;
2948 else
c9727e01
AM		 2949 {
2950 sec = syms[mid]->section;
2951 break;
2952 }
699733f6
AM		 2953 }
2954
c9727e01 2955 if (lo >= hi && lo > codesecsym)
699733f6 2956 sec = syms[lo - 1]->section;
699733f6
AM		 2957
2958 for (; sec != NULL; sec = sec->next)
2959 {
2960 if (sec->vma > ent)
2961 break;
2962 if ((sec->flags & SEC_ALLOC) == 0
2963 || (sec->flags & SEC_LOAD) == 0)
2964 break;
2965 if ((sec->flags & SEC_CODE) != 0)
2966 s->section = sec;
2967 }
2968 s->value = ent - s->section->vma;
2969 s->name = names;
2970 *names++ = '.';
2971 len = strlen (syms[i]->name);
2972 memcpy (names, syms[i]->name, len + 1);
2973 names += len + 1;
2974 s++;
90e3cdf2 2975 }
90e3cdf2 2976 }
699733f6 2977 free (contents);
90e3cdf2
JJ		 2978 }
2979
c9727e01 2980 done:
a7535cf3 2981 free (syms);
90e3cdf2
JJ		 2982 return count;
2983}
5bd4f169 2984\f
65f38f15
AM		 2985/* The following functions are specific to the ELF linker, while
2986 functions above are used generally. Those named ppc64_elf_* are
2987 called by the main ELF linker code. They appear in this file more
2988 or less in the order in which they are called. eg.
2989 ppc64_elf_check_relocs is called early in the link process,
2990 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2991 called.
2992
2993 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2994 functions have both a function code symbol and a function descriptor
2995 symbol. A call to foo in a relocatable object file looks like:
2996
2997 . .text
2998 . x:
2999 . bl .foo
3000 . nop
3001
3002 The function definition in another object file might be:
3003
3004 . .section .opd
3005 . foo: .quad .foo
3006 . .quad .TOC.@tocbase
3007 . .quad 0
3008 .
3009 . .text
3010 . .foo: blr
3011
3012 When the linker resolves the call during a static link, the branch
3013 unsurprisingly just goes to .foo and the .opd information is unused.
3014 If the function definition is in a shared library, things are a little
3015 different: The call goes via a plt call stub, the opd information gets
3016 copied to the plt, and the linker patches the nop.
3017
3018 . x:
3019 . bl .foo_stub
3020 . ld 2,40(1)
3021 .
3022 .
3023 . .foo_stub:
3024 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3025 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3026 . std 2,40(1) # this is the general idea
3027 . ld 11,0(12)
3028 . ld 2,8(12)
3029 . mtctr 11
3030 . ld 11,16(12)
3031 . bctr
3032 .
3033 . .section .plt
3034 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3035
3036 The "reloc ()" notation is supposed to indicate that the linker emits
3037 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3038 copying.
3039
3040 What are the difficulties here? Well, firstly, the relocations
3041 examined by the linker in check_relocs are against the function code
3042 sym .foo, while the dynamic relocation in the plt is emitted against
3043 the function descriptor symbol, foo. Somewhere along the line, we need
3044 to carefully copy dynamic link information from one symbol to the other.
3045 Secondly, the generic part of the elf linker will make .foo a dynamic
3046 symbol as is normal for most other backends. We need foo dynamic
3047 instead, at least for an application final link. However, when
3048 creating a shared library containing foo, we need to have both symbols
3049 dynamic so that references to .foo are satisfied during the early
3050 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3051 definition from some other object, eg. a static library.
3052
3053 Update: As of August 2004, we support a new convention. Function
3054 calls may use the function descriptor symbol, ie. "bl foo". This
3055 behaves exactly as "bl .foo". */
65f38f15
AM		 3056
3057/* The linker needs to keep track of the number of relocs that it
3058 decides to copy as dynamic relocs in check_relocs for each symbol.
3059 This is so that it can later discard them if they are found to be
3060 unnecessary. We store the information in a field extending the
3061 regular ELF linker hash table. */
3062
3063struct ppc_dyn_relocs
3064{
3065 struct ppc_dyn_relocs *next;
3066
3067 /* The input section of the reloc. */
3068 asection *sec;
3069
3070 /* Total number of relocs copied for the input section. */
3071 bfd_size_type count;
3072
3073 /* Number of pc-relative relocs copied for the input section. */
3074 bfd_size_type pc_count;
3075};
3076
411e1bfb
AM		 3077/* Track GOT entries needed for a given symbol. We might need more
3078 than one got entry per symbol. */
3079struct got_entry
3080{
3081 struct got_entry *next;
3082
e7b938ca 3083 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3084 bfd_vma addend;
3085
e717da7e
AM		 3086 /* Unlike other ELF targets, we use separate GOT entries for the same
3087 symbol referenced from different input files. This is to support
3088 automatic multiple TOC/GOT sections, where the TOC base can vary
3089 from one input file to another.
3090
3091 Point to the BFD owning this GOT entry. */
3092 bfd *owner;
3093
3094 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3095 TLS_TPREL or TLS_DTPREL for tls entries. */
3096 char tls_type;
3097
e7b938ca 3098 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3099 union
3100 {
3101 bfd_signed_vma refcount;
3102 bfd_vma offset;
3103 } got;
411e1bfb
AM		 3104};
3105
3106/* The same for PLT. */
3107struct plt_entry
3108{
3109 struct plt_entry *next;
3110
3111 bfd_vma addend;
3112
3113 union
3114 {
3115 bfd_signed_vma refcount;
3116 bfd_vma offset;
3117 } plt;
3118};
3119
65f38f15 3120/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3121 selects those that must be copied when linking a shared library,
3122 even when the symbol is local. */
65f38f15 3123
411e1bfb 3124#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3125 ((RTYPE) != R_PPC64_REL32 \
3126 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3127 && (RTYPE) != R_PPC64_REL30)
65f38f15 3128
f4656909
AM		 3129/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3130 copying dynamic variables from a shared lib into an app's dynbss
3131 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3132 shared lib. With code that gcc generates, it's vital that this be
3133 enabled; In the PowerPC64 ABI, the address of a function is actually
3134 the address of a function descriptor, which resides in the .opd
3135 section. gcc uses the descriptor directly rather than going via the
3136 GOT as some other ABI's do, which means that initialized function
3137 pointers must reference the descriptor. Thus, a function pointer
3138 initialized to the address of a function in a shared library will
3139 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3140 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3141 presents a problem as a plt entry for that function is also
3142 initialized from the function descriptor symbol and the copy reloc
3143 may not be initialized first. */
a23b6845 3144#define ELIMINATE_COPY_RELOCS 1
f4656909 3145
721956f4
AM		 3146/* Section name for stubs is the associated section name plus this
3147 string. */
3148#define STUB_SUFFIX ".stub"
3149
3150/* Linker stubs.
3151 ppc_stub_long_branch:
3152 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3153 destination, but a 24 bit branch in a stub section will reach.
3154 . b dest
3155
3156 ppc_stub_plt_branch:
3157 Similar to the above, but a 24 bit branch in the stub section won't
3158 reach its destination.
87e226ce
AM		 3159 . addis %r12,%r2,xxx@toc@ha
3160 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3161 . mtctr %r11
3162 . bctr
3163
3164 ppc_stub_plt_call:
2c66dc6c
AM		 3165 Used to call a function in a shared library. If it so happens that
3166 the plt entry referenced crosses a 64k boundary, then an extra
3167 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3168 xxx+16 as appropriate.
87e226ce 3169 . addis %r12,%r2,xxx@toc@ha
721956f4 3170 . std %r2,40(%r1)
87e226ce
AM		 3171 . ld %r11,xxx+0@toc@l(%r12)
3172 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3173 . mtctr %r11
87e226ce 3174 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3175 . bctr
ad8e1ba5
AM		 3176
3177 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3178 code to adjust the value and save r2 to support multiple toc sections.
3179 A ppc_stub_long_branch with an r2 offset looks like:
3180 . std %r2,40(%r1)
3181 . addis %r2,%r2,off@ha
3182 . addi %r2,%r2,off@l
3183 . b dest
3184
3185 A ppc_stub_plt_branch with an r2 offset looks like:
3186 . std %r2,40(%r1)
3187 . addis %r12,%r2,xxx@toc@ha
3188 . ld %r11,xxx@toc@l(%r12)
3189 . addis %r2,%r2,off@ha
3190 . addi %r2,%r2,off@l
3191 . mtctr %r11
3192 . bctr
721956f4
AM		 3193*/
3194
3195enum ppc_stub_type {
3196 ppc_stub_none,
3197 ppc_stub_long_branch,
ad8e1ba5 3198 ppc_stub_long_branch_r2off,
721956f4 3199 ppc_stub_plt_branch,
ad8e1ba5 3200 ppc_stub_plt_branch_r2off,
721956f4
AM		 3201 ppc_stub_plt_call
3202};
3203
3204struct ppc_stub_hash_entry {
3205
3206 /* Base hash table entry structure. */
3207 struct bfd_hash_entry root;
3208
ad8e1ba5
AM		 3209 enum ppc_stub_type stub_type;
3210
721956f4
AM		 3211 /* The stub section. */
3212 asection *stub_sec;
3213
3214 /* Offset within stub_sec of the beginning of this stub. */
3215 bfd_vma stub_offset;
3216
3217 /* Given the symbol's value and its section we can determine its final
3218 value when building the stubs (so the stub knows where to jump. */
3219 bfd_vma target_value;
3220 asection *target_section;
3221
721956f4
AM		 3222 /* The symbol table entry, if any, that this was derived from. */
3223 struct ppc_link_hash_entry *h;
3224
411e1bfb
AM		 3225 /* And the reloc addend that this was derived from. */
3226 bfd_vma addend;
3227
721956f4
AM		 3228 /* Where this stub is being called from, or, in the case of combined
3229 stub sections, the first input section in the group. */
3230 asection *id_sec;
3231};
3232
3233struct ppc_branch_hash_entry {
3234
3235 /* Base hash table entry structure. */
3236 struct bfd_hash_entry root;
3237
3238 /* Offset within .branch_lt. */
3239 unsigned int offset;
3240
3241 /* Generation marker. */
3242 unsigned int iter;
3243};
65f38f15
AM		 3244
3245struct ppc_link_hash_entry
3246{
3247 struct elf_link_hash_entry elf;
3248
721956f4
AM		 3249 /* A pointer to the most recently used stub hash entry against this
3250 symbol. */
3251 struct ppc_stub_hash_entry *stub_cache;
3252
65f38f15
AM		 3253 /* Track dynamic relocs copied for this symbol. */
3254 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3255
721956f4 3256 /* Link between function code and descriptor symbols. */
34814b9f 3257 struct ppc_link_hash_entry *oh;
721956f4 3258
e86ce104
AM		 3259 /* Flag function code and descriptor symbols. */
3260 unsigned int is_func:1;
3261 unsigned int is_func_descriptor:1;
908b32fc 3262 unsigned int fake:1;
411e1bfb 3263
c5614fa4
AM		 3264 /* Whether global opd/toc sym has been adjusted or not.
3265 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3266 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3267 unsigned int adjust_done:1;
3268
99877b66
AM		 3269 /* Set if we twiddled this symbol to weak at some stage. */
3270 unsigned int was_undefined:1;
3271
411e1bfb 3272 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3273 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3274 corresponding relocs are encountered during check_relocs.
3275 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3276 indicate the corresponding GOT entry type is not needed.
3277 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3278 a TPREL one. We use a separate flag rather than setting TPREL
3279 just for convenience in distinguishing the two cases. */
3280#define TLS_GD 1 /* GD reloc. */
3281#define TLS_LD 2 /* LD reloc. */
3282#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3283#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3284#define TLS_TLS 16 /* Any TLS reloc. */
3285#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3286#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3287 char tls_mask;
65f38f15
AM		 3288};
3289
3290/* ppc64 ELF linker hash table. */
3291
3292struct ppc_link_hash_table
3293{
3294 struct elf_link_hash_table elf;
3295
721956f4
AM		 3296 /* The stub hash table. */
3297 struct bfd_hash_table stub_hash_table;
3298
3299 /* Another hash table for plt_branch stubs. */
3300 struct bfd_hash_table branch_hash_table;
3301
3302 /* Linker stub bfd. */
3303 bfd *stub_bfd;
3304
3305 /* Linker call-backs. */
4ce794b7
AM		 3306 asection * (*add_stub_section) (const char *, asection *);
3307 void (*layout_sections_again) (void);
721956f4
AM		 3308
3309 /* Array to keep track of which stub sections have been created, and
3310 information on stub grouping. */
3311 struct map_stub {
3312 /* This is the section to which stubs in the group will be attached. */
3313 asection *link_sec;
3314 /* The stub section. */
3315 asection *stub_sec;
ad8e1ba5
AM		 3316 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3317 bfd_vma toc_off;
721956f4
AM		 3318 } *stub_group;
3319
ad8e1ba5
AM		 3320 /* Temp used when calculating TOC pointers. */
3321 bfd_vma toc_curr;
3322
8f3bab57
AM		 3323 /* Highest input section id. */
3324 int top_id;
3325
734b6cf9
AM		 3326 /* Highest output section index. */
3327 int top_index;
3328
3329 /* List of input sections for each output section. */
3330 asection **input_list;
721956f4 3331
65f38f15 3332 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3333 asection *got;
4ce794b7
AM		 3334 asection *plt;
3335 asection *relplt;
3336 asection *dynbss;
3337 asection *relbss;
3338 asection *glink;
82bd7b59 3339 asection *sfpr;
4ce794b7
AM		 3340 asection *brlt;
3341 asection *relbrlt;
ec338859 3342
8387904d
AM		 3343 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3344 struct ppc_link_hash_entry *tls_get_addr;
3345 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3346
9b5ecbd0
AM		 3347 /* Statistics. */
3348 unsigned long stub_count[ppc_stub_plt_call];
3349
ee75fd95
AM		 3350 /* Number of stubs against global syms. */
3351 unsigned long stub_globals;
3352
ad8e1ba5 3353 /* Set if we should emit symbols for stubs. */
99877b66 3354 unsigned int emit_stub_syms:1;
ad8e1ba5 3355
4c52953f
AM		 3356 /* Support for multiple toc sections. */
3357 unsigned int no_multi_toc:1;
3358 unsigned int multi_toc_needed:1;
3359
5d1634d7 3360 /* Set on error. */
99877b66 3361 unsigned int stub_error:1;
721956f4
AM		 3362
3363 /* Flag set when small branches are detected. Used to
3364 select suitable defaults for the stub group size. */
99877b66
AM		 3365 unsigned int has_14bit_branch:1;
3366
3367 /* Temp used by ppc64_elf_check_directives. */
3368 unsigned int twiddled_syms:1;
721956f4
AM		 3369
3370 /* Incremented every time we size stubs. */
3371 unsigned int stub_iteration;
5d1634d7 3372
ec338859
AM		 3373 /* Small local sym to section mapping cache. */
3374 struct sym_sec_cache sym_sec;
65f38f15
AM		 3375};
3376
4c52953f
AM		 3377/* Rename some of the generic section flags to better document how they
3378 are used here. */
3379#define has_toc_reloc has_gp_reloc
3380#define makes_toc_func_call need_finalize_relax
3381#define call_check_in_progress reloc_done
3382
65f38f15
AM		 3383/* Get the ppc64 ELF linker hash table from a link_info structure. */
3384
3385#define ppc_hash_table(p) \
3386 ((struct ppc_link_hash_table *) ((p)->hash))
3387
721956f4
AM		 3388#define ppc_stub_hash_lookup(table, string, create, copy) \
3389 ((struct ppc_stub_hash_entry *) \
3390 bfd_hash_lookup ((table), (string), (create), (copy)))
3391
3392#define ppc_branch_hash_lookup(table, string, create, copy) \
3393 ((struct ppc_branch_hash_entry *) \
3394 bfd_hash_lookup ((table), (string), (create), (copy)))
3395
3396/* Create an entry in the stub hash table. */
3397
3398static struct bfd_hash_entry *
4ce794b7
AM		 3399stub_hash_newfunc (struct bfd_hash_entry *entry,
3400 struct bfd_hash_table *table,
3401 const char *string)
721956f4
AM		 3402{
3403 /* Allocate the structure if it has not already been allocated by a
3404 subclass. */
3405 if (entry == NULL)
3406 {
3407 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3408 if (entry == NULL)
3409 return entry;
3410 }
3411
3412 /* Call the allocation method of the superclass. */
3413 entry = bfd_hash_newfunc (entry, table, string);
3414 if (entry != NULL)
3415 {
3416 struct ppc_stub_hash_entry *eh;
3417
3418 /* Initialize the local fields. */
3419 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3420 eh->stub_type = ppc_stub_none;
721956f4
AM		 3421 eh->stub_sec = NULL;
3422 eh->stub_offset = 0;
3423 eh->target_value = 0;
3424 eh->target_section = NULL;
721956f4
AM		 3425 eh->h = NULL;
3426 eh->id_sec = NULL;
3427 }
3428
3429 return entry;
3430}
3431
3432/* Create an entry in the branch hash table. */
3433
3434static struct bfd_hash_entry *
4ce794b7
AM		 3435branch_hash_newfunc (struct bfd_hash_entry *entry,
3436 struct bfd_hash_table *table,
3437 const char *string)
721956f4
AM		 3438{
3439 /* Allocate the structure if it has not already been allocated by a
3440 subclass. */
3441 if (entry == NULL)
3442 {
3443 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3444 if (entry == NULL)
3445 return entry;
3446 }
3447
3448 /* Call the allocation method of the superclass. */
3449 entry = bfd_hash_newfunc (entry, table, string);
3450 if (entry != NULL)
3451 {
3452 struct ppc_branch_hash_entry *eh;
3453
3454 /* Initialize the local fields. */
3455 eh = (struct ppc_branch_hash_entry *) entry;
3456 eh->offset = 0;
3457 eh->iter = 0;
3458 }
3459
3460 return entry;
3461}
3462
65f38f15
AM		 3463/* Create an entry in a ppc64 ELF linker hash table. */
3464
3465static struct bfd_hash_entry *
4ce794b7
AM		 3466link_hash_newfunc (struct bfd_hash_entry *entry,
3467 struct bfd_hash_table *table,
3468 const char *string)
65f38f15
AM		 3469{
3470 /* Allocate the structure if it has not already been allocated by a
3471 subclass. */
3472 if (entry == NULL)
3473 {
3474 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3475 if (entry == NULL)
3476 return entry;
3477 }
3478
3479 /* Call the allocation method of the superclass. */
3480 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3481 if (entry != NULL)
3482 {
3483 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3484
908b32fc
AM		 3485 memset (&eh->stub_cache, 0,
3486 (sizeof (struct ppc_link_hash_entry)
3487 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3488 }
3489
3490 return entry;
3491}
3492
3493/* Create a ppc64 ELF linker hash table. */
3494
3495static struct bfd_link_hash_table *
4ce794b7 3496ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3497{
3498 struct ppc_link_hash_table *htab;
3499 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3500
4ce794b7 3501 htab = bfd_zmalloc (amt);
65f38f15
AM		 3502 if (htab == NULL)
3503 return NULL;
3504
3505 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3506 {
e2d34d7d 3507 free (htab);
65f38f15
AM		 3508 return NULL;
3509 }
3510
721956f4
AM		 3511 /* Init the stub hash table too. */
3512 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3513 return NULL;
3514
3515 /* And the branch hash table. */
3516 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3517 return NULL;
3518
3254fd24
AM		 3519 /* Initializing two fields of the union is just cosmetic. We really
3520 only care about glist, but when compiled on a 32-bit host the
3521 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3522 debugger inspection of these fields look nicer. */
3523 htab->elf.init_refcount.refcount = 0;
3524 htab->elf.init_refcount.glist = NULL;
3525 htab->elf.init_offset.offset = 0;
3526 htab->elf.init_offset.glist = NULL;
3527
65f38f15
AM		 3528 return &htab->elf.root;
3529}
3530
721956f4
AM		 3531/* Free the derived linker hash table. */
3532
3533static void
4ce794b7 3534ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3535{
3536 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3537
3538 bfd_hash_table_free (&ret->stub_hash_table);
3539 bfd_hash_table_free (&ret->branch_hash_table);
3540 _bfd_generic_link_hash_table_free (hash);
3541}
3542
e717da7e
AM		 3543/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3544
3545void
3546ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3547{
3548 struct ppc_link_hash_table *htab;
3549
3550 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3551
3552/* Always hook our dynamic sections into the first bfd, which is the
3553 linker created stub bfd. This ensures that the GOT header is at
3554 the start of the output TOC section. */
3555 htab = ppc_hash_table (info);
3556 htab->stub_bfd = abfd;
3557 htab->elf.dynobj = abfd;
3558}
3559
721956f4
AM		 3560/* Build a name for an entry in the stub hash table. */
3561
3562static char *
4ce794b7
AM		 3563ppc_stub_name (const asection *input_section,
3564 const asection *sym_sec,
3565 const struct ppc_link_hash_entry *h,
3566 const Elf_Internal_Rela *rel)
721956f4
AM		 3567{
3568 char *stub_name;
3569 bfd_size_type len;
3570
3571 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3572 offsets from a sym as a branch target? In fact, we could
3573 probably assume the addend is always zero. */
3574 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3575
3576 if (h)
3577 {
3578 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3579 stub_name = bfd_malloc (len);
3580 if (stub_name != NULL)
3581 {
97b639ba 3582 sprintf (stub_name, "%08x.%s+%x",
721956f4
AM		 3583 input_section->id & 0xffffffff,
3584 h->elf.root.root.string,
3585 (int) rel->r_addend & 0xffffffff);
3586 }
3587 }
3588 else
3589 {
ad8e1ba5 3590 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4
AM		 3591 stub_name = bfd_malloc (len);
3592 if (stub_name != NULL)
3593 {
97b639ba 3594 sprintf (stub_name, "%08x.%x:%x+%x",
721956f4
AM		 3595 input_section->id & 0xffffffff,
3596 sym_sec->id & 0xffffffff,
3597 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3598 (int) rel->r_addend & 0xffffffff);
3599 }
3600 }
ee75fd95
AM		 3601 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3602 stub_name[len - 2] = 0;
721956f4
AM		 3603 return stub_name;
3604}
3605
3606/* Look up an entry in the stub hash. Stub entries are cached because
3607 creating the stub name takes a bit of time. */
3608
3609static struct ppc_stub_hash_entry *
4ce794b7
AM		 3610ppc_get_stub_entry (const asection *input_section,
3611 const asection *sym_sec,
039b3fef 3612 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3613 const Elf_Internal_Rela *rel,
3614 struct ppc_link_hash_table *htab)
721956f4
AM		 3615{
3616 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3617 const asection *id_sec;
3618
3619 /* If this input section is part of a group of sections sharing one
3620 stub section, then use the id of the first section in the group.
3621 Stub names need to include a section id, as there may well be
3622 more than one stub used to reach say, printf, and we need to
3623 distinguish between them. */
3624 id_sec = htab->stub_group[input_section->id].link_sec;
3625
3626 if (h != NULL && h->stub_cache != NULL
3627 && h->stub_cache->h == h
3628 && h->stub_cache->id_sec == id_sec)
3629 {
3630 stub_entry = h->stub_cache;
3631 }
3632 else
3633 {
3634 char *stub_name;
3635
3636 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3637 if (stub_name == NULL)
3638 return NULL;
3639
3640 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3641 stub_name, FALSE, FALSE);
721956f4
AM		 3642 if (h != NULL)
3643 h->stub_cache = stub_entry;
3644
3645 free (stub_name);
3646 }
3647
3648 return stub_entry;
3649}
3650
3651/* Add a new stub entry to the stub hash. Not all fields of the new
3652 stub entry are initialised. */
3653
3654static struct ppc_stub_hash_entry *
4ce794b7
AM		 3655ppc_add_stub (const char *stub_name,
3656 asection *section,
3657 struct ppc_link_hash_table *htab)
721956f4
AM		 3658{
3659 asection *link_sec;
3660 asection *stub_sec;
3661 struct ppc_stub_hash_entry *stub_entry;
3662
3663 link_sec = htab->stub_group[section->id].link_sec;
3664 stub_sec = htab->stub_group[section->id].stub_sec;
3665 if (stub_sec == NULL)
3666 {
3667 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3668 if (stub_sec == NULL)
3669 {
d4c88bbb 3670 size_t namelen;
721956f4
AM		 3671 bfd_size_type len;
3672 char *s_name;
3673
d4c88bbb
AM		 3674 namelen = strlen (link_sec->name);
3675 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3676 s_name = bfd_alloc (htab->stub_bfd, len);
3677 if (s_name == NULL)
3678 return NULL;
3679
d4c88bbb
AM		 3680 memcpy (s_name, link_sec->name, namelen);
3681 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3682 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3683 if (stub_sec == NULL)
3684 return NULL;
3685 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3686 }
3687 htab->stub_group[section->id].stub_sec = stub_sec;
3688 }
3689
3690 /* Enter this entry into the linker stub hash table. */
3691 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3692 TRUE, FALSE);
721956f4
AM		 3693 if (stub_entry == NULL)
3694 {
d003868e
AM		 3695 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3696 section->owner, stub_name);
721956f4
AM		 3697 return NULL;
3698 }
3699
3700 stub_entry->stub_sec = stub_sec;
3701 stub_entry->stub_offset = 0;
3702 stub_entry->id_sec = link_sec;
3703 return stub_entry;
3704}
3705
82bd7b59
AM		 3706/* Create sections for linker generated code. */
3707
b34976b6 3708static bfd_boolean
4ce794b7 3709create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3710{
3711 struct ppc_link_hash_table *htab;
3712 flagword flags;
3713
3714 htab = ppc_hash_table (info);
3715
3716 /* Create .sfpr for code to save and restore fp regs. */
3717 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3718 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3719 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3720 flags);
82bd7b59 3721 if (htab->sfpr == NULL
82bd7b59 3722 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3723 return FALSE;
82bd7b59 3724
721956f4 3725 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3726 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3727 flags);
4ce794b7 3728 if (htab->glink == NULL
4ce794b7 3729 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3730 return FALSE;
82bd7b59 3731
721956f4
AM		 3732 /* Create .branch_lt for plt_branch stubs. */
3733 flags = (SEC_ALLOC | SEC_LOAD
3734 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3735 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3736 flags);
4ce794b7 3737 if (htab->brlt == NULL
4ce794b7 3738 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3739 return FALSE;
721956f4 3740
ee75fd95 3741 if (info->shared || info->emitrelocations)
721956f4
AM		 3742 {
3743 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3744 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3745 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3746 ".rela.branch_lt",
3747 flags);
4ce794b7 3748 if (!htab->relbrlt
4ce794b7 3749 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3750 return FALSE;
721956f4 3751 }
b34976b6 3752 return TRUE;
82bd7b59
AM		 3753}
3754
e717da7e
AM		 3755/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3756 not already done. */
65f38f15 3757
b34976b6 3758static bfd_boolean
e717da7e 3759create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3760{
e717da7e
AM		 3761 asection *got, *relgot;
3762 flagword flags;
3763 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3764
4ce794b7 3765 if (!htab->got)
e717da7e
AM		 3766 {
3767 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3768 return FALSE;
3769
3770 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3771 if (!htab->got)
3772 abort ();
3773 }
3774
3775 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3776 | SEC_LINKER_CREATED);
3777
3496cb2a 3778 got = bfd_make_section_with_flags (abfd, ".got", flags);
e717da7e 3779 if (!got
e717da7e
AM		 3780 || !bfd_set_section_alignment (abfd, got, 3))
3781 return FALSE;
65f38f15 3782
3496cb2a
L		 3783 relgot = bfd_make_section_with_flags (abfd, ".rela.got",
3784 flags | SEC_READONLY);
e717da7e 3785 if (!relgot
e717da7e 3786 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3787 return FALSE;
e717da7e
AM		 3788
3789 ppc64_elf_tdata (abfd)->got = got;
3790 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3791 return TRUE;
65f38f15 3792}
5bd4f169 3793
82bd7b59 3794/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3795
b34976b6 3796static bfd_boolean
4ce794b7 3797ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3798{
65f38f15 3799 struct ppc_link_hash_table *htab;
5bd4f169 3800
65f38f15 3801 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3802 return FALSE;
65f38f15 3803
e717da7e
AM		 3804 htab = ppc_hash_table (info);
3805 if (!htab->got)
3806 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3807 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3808 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3809 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3810 if (!info->shared)
4ce794b7 3811 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3812
e717da7e 3813 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3814 || (!info->shared && !htab->relbss))
65f38f15
AM		 3815 abort ();
3816
b34976b6 3817 return TRUE;
5bd4f169
AM		 3818}
3819
40d16e0b
AM		 3820/* Merge PLT info on FROM with that on TO. */
3821
3822static void
3823move_plt_plist (struct ppc_link_hash_entry *from,
3824 struct ppc_link_hash_entry *to)
3825{
3826 if (from->elf.plt.plist != NULL)
3827 {
3828 if (to->elf.plt.plist != NULL)
3829 {
3830 struct plt_entry **entp;
3831 struct plt_entry *ent;
3832
3833 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3834 {
3835 struct plt_entry *dent;
3836
3837 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3838 if (dent->addend == ent->addend)
3839 {
3840 dent->plt.refcount += ent->plt.refcount;
3841 *entp = ent->next;
3842 break;
3843 }
3844 if (dent == NULL)
3845 entp = &ent->next;
3846 }
3847 *entp = to->elf.plt.plist;
3848 }
3849
3850 to->elf.plt.plist = from->elf.plt.plist;
3851 from->elf.plt.plist = NULL;
3852 }
3853}
3854
65f38f15
AM		 3855/* Copy the extra info we tack onto an elf_link_hash_entry. */
3856
3857static void
9c5bfbb7
AM		 3858ppc64_elf_copy_indirect_symbol
3859 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3860 struct elf_link_hash_entry *dir,
3861 struct elf_link_hash_entry *ind)
65f38f15
AM		 3862{
3863 struct ppc_link_hash_entry *edir, *eind;
3864
3865 edir = (struct ppc_link_hash_entry *) dir;
3866 eind = (struct ppc_link_hash_entry *) ind;
3867
411e1bfb 3868 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3869 if (eind->dyn_relocs != NULL)
65f38f15 3870 {
bbd7ec4a
AM		 3871 if (edir->dyn_relocs != NULL)
3872 {
3873 struct ppc_dyn_relocs **pp;
3874 struct ppc_dyn_relocs *p;
3875
411e1bfb 3876 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3877 abort ();
3878
3879 /* Add reloc counts against the weak sym to the strong sym
3880 list. Merge any entries against the same section. */
3881 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3882 {
3883 struct ppc_dyn_relocs *q;
3884
3885 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3886 if (q->sec == p->sec)
3887 {
3888 q->pc_count += p->pc_count;
3889 q->count += p->count;
3890 *pp = p->next;
3891 break;
3892 }
3893 if (q == NULL)
3894 pp = &p->next;
3895 }
3896 *pp = edir->dyn_relocs;
3897 }
3898
65f38f15
AM		 3899 edir->dyn_relocs = eind->dyn_relocs;
3900 eind->dyn_relocs = NULL;
3901 }
65f38f15 3902
6349e628
AM		 3903 edir->is_func |= eind->is_func;
3904 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3905 edir->tls_mask |= eind->tls_mask;
6349e628 3906
81848ca0 3907 /* If called to transfer flags for a weakdef during processing
f5385ebf 3908 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3909 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3910 if (!(ELIMINATE_COPY_RELOCS
3911 && eind->elf.root.type != bfd_link_hash_indirect
3912 && edir->elf.dynamic_adjusted))
3913 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3914
f5385ebf
AM		 3915 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3916 edir->elf.ref_regular |= eind->elf.ref_regular;
3917 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3918 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3919
3920 /* If we were called to copy over info for a weak sym, that's all. */
3921 if (eind->elf.root.type != bfd_link_hash_indirect)
3922 return;
3923
81848ca0
AM		 3924 /* Copy over got entries that we may have already seen to the
3925 symbol which just became indirect. */
411e1bfb
AM		 3926 if (eind->elf.got.glist != NULL)
3927 {
3928 if (edir->elf.got.glist != NULL)
3929 {
3930 struct got_entry **entp;
3931 struct got_entry *ent;
3932
3933 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3934 {
3935 struct got_entry *dent;
3936
3937 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3938 if (dent->addend == ent->addend
e717da7e 3939 && dent->owner == ent->owner
411e1bfb
AM		 3940 && dent->tls_type == ent->tls_type)
3941 {
3942 dent->got.refcount += ent->got.refcount;
3943 *entp = ent->next;
3944 break;
3945 }
3946 if (dent == NULL)
3947 entp = &ent->next;
3948 }
3949 *entp = edir->elf.got.glist;
3950 }
3951
3952 edir->elf.got.glist = eind->elf.got.glist;
3953 eind->elf.got.glist = NULL;
3954 }
3955
3956 /* And plt entries. */
40d16e0b 3957 move_plt_plist (eind, edir);
411e1bfb 3958
411e1bfb
AM		 3959 if (edir->elf.dynindx == -1)
3960 {
3961 edir->elf.dynindx = eind->elf.dynindx;
3962 edir->elf.dynstr_index = eind->elf.dynstr_index;
3963 eind->elf.dynindx = -1;
3964 eind->elf.dynstr_index = 0;
3965 }
3966 else
3967 BFD_ASSERT (eind->elf.dynindx == -1);
3968}
3969
8387904d
AM		 3970/* Find the function descriptor hash entry from the given function code
3971 hash entry FH. Link the entries via their OH fields. */
3972
3973static struct ppc_link_hash_entry *
3974get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3975{
3976 struct ppc_link_hash_entry *fdh = fh->oh;
3977
3978 if (fdh == NULL)
3979 {
3980 const char *fd_name = fh->elf.root.root.string + 1;
3981
3982 fdh = (struct ppc_link_hash_entry *)
3983 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3984 if (fdh != NULL)
3985 {
3986 fdh->is_func_descriptor = 1;
3987 fdh->oh = fh;
3988 fh->is_func = 1;
3989 fh->oh = fdh;
3990 }
3991 }
3992
3993 return fdh;
3994}
3995
bb700d78
AM		 3996/* Make a fake function descriptor sym for the code sym FH. */
3997
3998static struct ppc_link_hash_entry *
3999make_fdh (struct bfd_link_info *info,
908b32fc 4000 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4001{
4002 bfd *abfd;
4003 asymbol *newsym;
4004 struct bfd_link_hash_entry *bh;
4005 struct ppc_link_hash_entry *fdh;
4006
4007 abfd = fh->elf.root.u.undef.abfd;
4008 newsym = bfd_make_empty_symbol (abfd);
4009 newsym->name = fh->elf.root.root.string + 1;
4010 newsym->section = bfd_und_section_ptr;
4011 newsym->value = 0;
908b32fc 4012 newsym->flags = BSF_WEAK;
bb700d78
AM		 4013
4014 bh = NULL;
4015 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4016 newsym->flags, newsym->section,
4017 newsym->value, NULL, FALSE, FALSE,
4018 &bh))
4019 return NULL;
4020
4021 fdh = (struct ppc_link_hash_entry *) bh;
4022 fdh->elf.non_elf = 0;
908b32fc
AM		 4023 fdh->fake = 1;
4024 fdh->is_func_descriptor = 1;
4025 fdh->oh = fh;
4026 fh->is_func = 1;
4027 fh->oh = fdh;
bb700d78
AM		 4028 return fdh;
4029}
4030
8387904d
AM		 4031/* Hacks to support old ABI code.
4032 When making function calls, old ABI code references function entry
4033 points (dot symbols), while new ABI code references the function
4034 descriptor symbol. We need to make any combination of reference and
4035 definition work together, without breaking archive linking.
4036
4037 For a defined function "foo" and an undefined call to "bar":
4038 An old object defines "foo" and ".foo", references ".bar" (possibly
4039 "bar" too).
4040 A new object defines "foo" and references "bar".
4041
4042 A new object thus has no problem with its undefined symbols being
4043 satisfied by definitions in an old object. On the other hand, the
4044 old object won't have ".bar" satisfied by a new object. */
4045
4046/* Fix function descriptor symbols defined in .opd sections to be
4047 function type. */
555cd476
AM		 4048
4049static bfd_boolean
433817dd 4050ppc64_elf_add_symbol_hook (bfd *ibfd,
555cd476
AM		 4051 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4052 Elf_Internal_Sym *isym,
433817dd 4053 const char **name,
555cd476
AM		 4054 flagword *flags ATTRIBUTE_UNUSED,
4055 asection **sec,
4056 bfd_vma *value ATTRIBUTE_UNUSED)
4057{
8843416a
AM		 4058 if (*sec != NULL
4059 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4060 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd
AM		 4061
4062 if ((*name)[0] == '.'
4063 && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
4064 && ELF_ST_TYPE (isym->st_info) < STT_SECTION
4065 && is_ppc64_elf_target (ibfd->xvec))
4066 ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
4067
555cd476
AM		 4068 return TRUE;
4069}
4070
8387904d 4071/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4072 inclusion of a new ABI object archive that defines "bar".
4073 NAME is a symbol defined in an archive. Return a symbol in the hash
4074 table that might be satisfied by the archive symbols. */
8387904d
AM		 4075
4076static struct elf_link_hash_entry *
4077ppc64_elf_archive_symbol_lookup (bfd *abfd,
4078 struct bfd_link_info *info,
4079 const char *name)
4080{
4081 struct elf_link_hash_entry *h;
4082 char *dot_name;
4083 size_t len;
4084
4085 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4086 if (h != NULL
4087 /* Don't return this sym if it is a fake function descriptor
4088 created by add_symbol_adjust. */
4089 && !(h->root.type == bfd_link_hash_undefweak
4090 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4091 return h;
4092
4093 if (name[0] == '.')
4094 return h;
4095
4096 len = strlen (name);
4097 dot_name = bfd_alloc (abfd, len + 2);
4098 if (dot_name == NULL)
4099 return (struct elf_link_hash_entry *) 0 - 1;
4100 dot_name[0] = '.';
4101 memcpy (dot_name + 1, name, len + 1);
4102 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4103 bfd_release (abfd, dot_name);
4104 return h;
4105}
4106
4107/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4108 new ABI object defines "bar". Well, at least, undefined dot symbols
4109 are made weak. This stops later archive searches from including an
4110 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4111 prevents the linker complaining about undefined symbols.
4112 We also check and correct mismatched symbol visibility here. The
4113 most restrictive visibility of the function descriptor and the
4114 function entry symbol is used. */
8387904d 4115
bb700d78
AM		 4116struct add_symbol_adjust_data
4117{
4118 struct bfd_link_info *info;
4119 bfd_boolean ok;
4120};
4121
8387904d
AM		 4122static bfd_boolean
4123add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4124{
bb700d78 4125 struct add_symbol_adjust_data *data;
8387904d 4126 struct ppc_link_hash_table *htab;
99877b66 4127 struct ppc_link_hash_entry *eh;
8387904d
AM		 4128 struct ppc_link_hash_entry *fdh;
4129
4130 if (h->root.type == bfd_link_hash_indirect)
4131 return TRUE;
4132
4133 if (h->root.type == bfd_link_hash_warning)
4134 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4135
35b0ce59 4136 if (h->root.root.string[0] != '.')
8387904d
AM		 4137 return TRUE;
4138
bb700d78
AM		 4139 data = inf;
4140 htab = ppc_hash_table (data->info);
99877b66
AM		 4141 eh = (struct ppc_link_hash_entry *) h;
4142 fdh = get_fdh (eh, htab);
bb700d78 4143 if (fdh == NULL
c4f68ce3 4144 && !data->info->relocatable
bb700d78
AM		 4145 && (eh->elf.root.type == bfd_link_hash_undefined
4146 || eh->elf.root.type == bfd_link_hash_undefweak)
4147 && eh->elf.ref_regular)
4148 {
4149 /* Make an undefweak function descriptor sym, which is enough to
4150 pull in an --as-needed shared lib, but won't cause link
4151 errors. Archives are handled elsewhere. */
908b32fc 4152 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4153 if (fdh == NULL)
4154 data->ok = FALSE;
4155 else
4156 fdh->elf.ref_regular = 1;
4157 }
c4f68ce3
AM		 4158 else if (fdh != NULL
4159 && (fdh->elf.root.type == bfd_link_hash_defined
4160 || fdh->elf.root.type == bfd_link_hash_defweak))
8387904d 4161 {
35b0ce59
AM		 4162 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4163 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4164 if (entry_vis < descr_vis)
4165 fdh->elf.other += entry_vis - descr_vis;
4166 else if (entry_vis > descr_vis)
4167 eh->elf.other += descr_vis - entry_vis;
4168
c4f68ce3 4169 if (eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4170 {
4171 eh->elf.root.type = bfd_link_hash_undefweak;
4172 eh->was_undefined = 1;
4173 htab->twiddled_syms = 1;
4174 }
8387904d 4175 }
99877b66 4176
8387904d
AM		 4177 return TRUE;
4178}
4179
4180static bfd_boolean
433817dd 4181ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
8387904d 4182{
99877b66 4183 struct ppc_link_hash_table *htab;
bb700d78 4184 struct add_symbol_adjust_data data;
99877b66 4185
433817dd
AM		 4186 if (!is_ppc64_elf_target (abfd->xvec))
4187 return TRUE;
4188
4189 if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
4190 return TRUE;
4191 ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
4192
99877b66 4193 htab = ppc_hash_table (info);
ee75fd95 4194 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4195 return TRUE;
4196
bb700d78
AM		 4197 data.info = info;
4198 data.ok = TRUE;
4199 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4200
4201 /* We need to fix the undefs list for any syms we have twiddled to
4202 undef_weak. */
4203 if (htab->twiddled_syms)
4204 {
77cfaee6 4205 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4206 htab->twiddled_syms = 0;
4207 }
bb700d78 4208 return data.ok;
8387904d
AM		 4209}
4210
411e1bfb 4211static bfd_boolean
4ce794b7
AM		 4212update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4213 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4214{
4215 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4216 char *local_got_tls_masks;
411e1bfb
AM		 4217
4218 if (local_got_ents == NULL)
4219 {
4220 bfd_size_type size = symtab_hdr->sh_info;
4221
e7b938ca 4222 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4223 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4224 if (local_got_ents == NULL)
4225 return FALSE;
4226 elf_local_got_ents (abfd) = local_got_ents;
4227 }
4228
4229 if ((tls_type & TLS_EXPLICIT) == 0)
4230 {
4231 struct got_entry *ent;
4232
4233 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4234 if (ent->addend == r_addend
4235 && ent->owner == abfd
4236 && ent->tls_type == tls_type)
411e1bfb
AM		 4237 break;
4238 if (ent == NULL)
4239 {
4240 bfd_size_type amt = sizeof (*ent);
4ce794b7 4241 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4242 if (ent == NULL)
4243 return FALSE;
4244 ent->next = local_got_ents[r_symndx];
4245 ent->addend = r_addend;
e717da7e 4246 ent->owner = abfd;
411e1bfb
AM		 4247 ent->tls_type = tls_type;
4248 ent->got.refcount = 0;
4249 local_got_ents[r_symndx] = ent;
4250 }
4251 ent->got.refcount += 1;
4252 }
4253
e7b938ca
AM		 4254 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4255 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4256 return TRUE;
65f38f15
AM		 4257}
4258
411e1bfb 4259static bfd_boolean
4ce794b7 4260update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4261{
411e1bfb 4262 struct plt_entry *ent;
1e2f5b6e 4263
411e1bfb
AM		 4264 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4265 if (ent->addend == addend)
4266 break;
4267 if (ent == NULL)
1e2f5b6e 4268 {
411e1bfb 4269 bfd_size_type amt = sizeof (*ent);
4ce794b7 4270 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4271 if (ent == NULL)
4272 return FALSE;
4273 ent->next = eh->elf.plt.plist;
4274 ent->addend = addend;
4275 ent->plt.refcount = 0;
4276 eh->elf.plt.plist = ent;
1e2f5b6e 4277 }
411e1bfb 4278 ent->plt.refcount += 1;
f5385ebf 4279 eh->elf.needs_plt = 1;
93f3fa99
AM		 4280 if (eh->elf.root.root.string[0] == '.'
4281 && eh->elf.root.root.string[1] != '\0')
4282 eh->is_func = 1;
b34976b6 4283 return TRUE;
1e2f5b6e
AM		 4284}
4285
5bd4f169 4286/* Look through the relocs for a section during the first phase, and
65f38f15 4287 calculate needed space in the global offset table, procedure
5d1634d7 4288 linkage table, and dynamic reloc sections. */
5bd4f169 4289
b34976b6 4290static bfd_boolean
4ce794b7
AM		 4291ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4292 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4293{
65f38f15 4294 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4295 Elf_Internal_Shdr *symtab_hdr;
4296 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4297 const Elf_Internal_Rela *rel;
4298 const Elf_Internal_Rela *rel_end;
5bd4f169 4299 asection *sreloc;
1e2f5b6e 4300 asection **opd_sym_map;
5bd4f169 4301
1049f94e 4302 if (info->relocatable)
b34976b6 4303 return TRUE;
5bd4f169 4304
680a3378
AM		 4305 /* Don't do anything special with non-loaded, non-alloced sections.
4306 In particular, any relocs in such sections should not affect GOT
4307 and PLT reference counting (ie. we don't allow them to create GOT
4308 or PLT entries), there's no possibility or desire to optimize TLS
4309 relocs, and there's not much point in propagating relocs to shared
4310 libs that the dynamic linker won't relocate. */
4311 if ((sec->flags & SEC_ALLOC) == 0)
4312 return TRUE;
4313
65f38f15 4314 htab = ppc_hash_table (info);
5bd4f169 4315 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4316
4317 sym_hashes = elf_sym_hashes (abfd);
4318 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4319 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4320 - symtab_hdr->sh_info);
5bd4f169
AM		 4321
4322 sreloc = NULL;
1e2f5b6e
AM		 4323 opd_sym_map = NULL;
4324 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4325 {
4326 /* Garbage collection needs some extra help with .opd sections.
4327 We don't want to necessarily keep everything referenced by
4328 relocs in .opd, as that would keep all functions. Instead,
4329 if we reference an .opd symbol (a function descriptor), we
4330 want to keep the function code symbol's section. This is
4331 easy for global symbols, but for local syms we need to keep
4332 information about the associated function section. Later, if
4333 edit_opd deletes entries, we'll use this array to adjust
4334 local syms in .opd. */
4335 union opd_info {
4336 asection *func_section;
4337 long entry_adjust;
4338 };
4339 bfd_size_type amt;
4340
3f764659 4341 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4342 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4343 if (opd_sym_map == NULL)
b34976b6 4344 return FALSE;
f0abc2a1 4345 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4346 }
5bd4f169 4347
82bd7b59
AM		 4348 if (htab->sfpr == NULL
4349 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4350 return FALSE;
82bd7b59 4351
5bd4f169
AM		 4352 rel_end = relocs + sec->reloc_count;
4353 for (rel = relocs; rel < rel_end; rel++)
4354 {
4355 unsigned long r_symndx;
4356 struct elf_link_hash_entry *h;
04c9666a 4357 enum elf_ppc64_reloc_type r_type;
411e1bfb 4358 int tls_type = 0;
5bd4f169
AM		 4359
4360 r_symndx = ELF64_R_SYM (rel->r_info);
4361 if (r_symndx < symtab_hdr->sh_info)
4362 h = NULL;
4363 else
4364 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4365
4ce794b7 4366 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4367 switch (r_type)
5bd4f169 4368 {
411e1bfb
AM		 4369 case R_PPC64_GOT_TLSLD16:
4370 case R_PPC64_GOT_TLSLD16_LO:
4371 case R_PPC64_GOT_TLSLD16_HI:
4372 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4373 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4374 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4375 goto dogottls;
4376
4377 case R_PPC64_GOT_TLSGD16:
4378 case R_PPC64_GOT_TLSGD16_LO:
4379 case R_PPC64_GOT_TLSGD16_HI:
4380 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4381 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4382 goto dogottls;
4383
4384 case R_PPC64_GOT_TPREL16_DS:
4385 case R_PPC64_GOT_TPREL16_LO_DS:
4386 case R_PPC64_GOT_TPREL16_HI:
4387 case R_PPC64_GOT_TPREL16_HA:
4388 if (info->shared)
4389 info->flags |= DF_STATIC_TLS;
4390 tls_type = TLS_TLS | TLS_TPREL;
4391 goto dogottls;
4392
4393 case R_PPC64_GOT_DTPREL16_DS:
4394 case R_PPC64_GOT_DTPREL16_LO_DS:
4395 case R_PPC64_GOT_DTPREL16_HI:
4396 case R_PPC64_GOT_DTPREL16_HA:
4397 tls_type = TLS_TLS | TLS_DTPREL;
4398 dogottls:
4399 sec->has_tls_reloc = 1;
4400 /* Fall thru */
4401
5bd4f169 4402 case R_PPC64_GOT16:
5bd4f169 4403 case R_PPC64_GOT16_DS:
65f38f15
AM		 4404 case R_PPC64_GOT16_HA:
4405 case R_PPC64_GOT16_HI:
4406 case R_PPC64_GOT16_LO:
5bd4f169 4407 case R_PPC64_GOT16_LO_DS:
65f38f15 4408 /* This symbol requires a global offset table entry. */
4c52953f 4409 sec->has_toc_reloc = 1;
e717da7e
AM		 4410 if (ppc64_elf_tdata (abfd)->got == NULL
4411 && !create_got_section (abfd, info))
b34976b6 4412 return FALSE;
5bd4f169
AM		 4413
4414 if (h != NULL)
4415 {
411e1bfb
AM		 4416 struct ppc_link_hash_entry *eh;
4417 struct got_entry *ent;
65f38f15 4418
411e1bfb
AM		 4419 eh = (struct ppc_link_hash_entry *) h;
4420 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4421 if (ent->addend == rel->r_addend
e717da7e 4422 && ent->owner == abfd
411e1bfb
AM		 4423 && ent->tls_type == tls_type)
4424 break;
4425 if (ent == NULL)
5bd4f169 4426 {
411e1bfb 4427 bfd_size_type amt = sizeof (*ent);
4ce794b7 4428 ent = bfd_alloc (abfd, amt);
411e1bfb 4429 if (ent == NULL)
b34976b6 4430 return FALSE;
411e1bfb
AM		 4431 ent->next = eh->elf.got.glist;
4432 ent->addend = rel->r_addend;
e717da7e 4433 ent->owner = abfd;
411e1bfb
AM		 4434 ent->tls_type = tls_type;
4435 ent->got.refcount = 0;
4436 eh->elf.got.glist = ent;
5bd4f169 4437 }
411e1bfb 4438 ent->got.refcount += 1;
e7b938ca 4439 eh->tls_mask |= tls_type;
5bd4f169 4440 }
411e1bfb
AM		 4441 else
4442 /* This is a global offset table entry for a local symbol. */
4443 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4444 rel->r_addend, tls_type))
4445 return FALSE;
5bd4f169
AM		 4446 break;
4447
5bd4f169 4448 case R_PPC64_PLT16_HA:
65f38f15
AM		 4449 case R_PPC64_PLT16_HI:
4450 case R_PPC64_PLT16_LO:
4451 case R_PPC64_PLT32:
4452 case R_PPC64_PLT64:
5bd4f169 4453 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4454 actually build the entry in adjust_dynamic_symbol,
4455 because this might be a case of linking PIC code without
4456 linking in any dynamic objects, in which case we don't
4457 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4458 if (h == NULL)
4459 {
4460 /* It does not make sense to have a procedure linkage
3fad3c7c 4461 table entry for a local symbol. */
5bd4f169 4462 bfd_set_error (bfd_error_bad_value);
b34976b6 4463 return FALSE;
5bd4f169 4464 }
411e1bfb
AM		 4465 else
4466 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4467 rel->r_addend))
4468 return FALSE;
5bd4f169
AM		 4469 break;
4470
4471 /* The following relocations don't need to propagate the
4472 relocation if linking a shared object since they are
4473 section relative. */
4474 case R_PPC64_SECTOFF:
4475 case R_PPC64_SECTOFF_LO:
4476 case R_PPC64_SECTOFF_HI:
4477 case R_PPC64_SECTOFF_HA:
4478 case R_PPC64_SECTOFF_DS:
4479 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4480 case R_PPC64_DTPREL16:
4481 case R_PPC64_DTPREL16_LO:
4482 case R_PPC64_DTPREL16_HI:
4483 case R_PPC64_DTPREL16_HA:
4484 case R_PPC64_DTPREL16_DS:
4485 case R_PPC64_DTPREL16_LO_DS:
4486 case R_PPC64_DTPREL16_HIGHER:
4487 case R_PPC64_DTPREL16_HIGHERA:
4488 case R_PPC64_DTPREL16_HIGHEST:
4489 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4490 break;
4491
ad8e1ba5
AM		 4492 /* Nor do these. */
4493 case R_PPC64_TOC16:
4494 case R_PPC64_TOC16_LO:
4495 case R_PPC64_TOC16_HI:
4496 case R_PPC64_TOC16_HA:
4497 case R_PPC64_TOC16_DS:
4498 case R_PPC64_TOC16_LO_DS:
4c52953f 4499 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4500 break;
4501
5bd4f169
AM		 4502 /* This relocation describes the C++ object vtable hierarchy.
4503 Reconstruct it for later use during GC. */
4504 case R_PPC64_GNU_VTINHERIT:
c152c796 4505 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4506 return FALSE;
5bd4f169
AM		 4507 break;
4508
4509 /* This relocation describes which C++ vtable entries are actually
4510 used. Record for later use during GC. */
4511 case R_PPC64_GNU_VTENTRY:
c152c796 4512 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4513 return FALSE;
5bd4f169
AM		 4514 break;
4515
721956f4
AM		 4516 case R_PPC64_REL14:
4517 case R_PPC64_REL14_BRTAKEN:
4518 case R_PPC64_REL14_BRNTAKEN:
4519 htab->has_14bit_branch = 1;
4520 /* Fall through. */
4521
5d1634d7 4522 case R_PPC64_REL24:
8387904d 4523 if (h != NULL)
5d1634d7
AM		 4524 {
4525 /* We may need a .plt entry if the function this reloc
4526 refers to is in a shared lib. */
411e1bfb
AM		 4527 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4528 rel->r_addend))
4529 return FALSE;
8387904d
AM		 4530 if (h == &htab->tls_get_addr->elf
4531 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4532 sec->has_tls_reloc = 1;
8387904d
AM		 4533 else if (htab->tls_get_addr == NULL
4534 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4535 && (h->root.root.string[15] == 0
4536 || h->root.root.string[15] == '@'))
411e1bfb 4537 {
8387904d
AM		 4538 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4539 sec->has_tls_reloc = 1;
4540 }
4541 else if (htab->tls_get_addr_fd == NULL
4542 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4543 && (h->root.root.string[14] == 0
4544 || h->root.root.string[14] == '@'))
4545 {
4546 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4547 sec->has_tls_reloc = 1;
4548 }
4549 }
4550 break;
4551
4552 case R_PPC64_TPREL64:
4553 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4554 if (info->shared)
4555 info->flags |= DF_STATIC_TLS;
4556 goto dotlstoc;
4557
4558 case R_PPC64_DTPMOD64:
4559 if (rel + 1 < rel_end
4560 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4561 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4562 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4563 else
951fd09b 4564 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4565 goto dotlstoc;
4566
4567 case R_PPC64_DTPREL64:
4568 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4569 if (rel != relocs
4570 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4571 && rel[-1].r_offset == rel->r_offset - 8)
4572 /* This is the second reloc of a dtpmod, dtprel pair.
4573 Don't mark with TLS_DTPREL. */
4574 goto dodyn;
4575
4576 dotlstoc:
4577 sec->has_tls_reloc = 1;
4578 if (h != NULL)
4579 {
4580 struct ppc_link_hash_entry *eh;
4581 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4582 eh->tls_mask |= tls_type;
411e1bfb
AM		 4583 }
4584 else
4585 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4586 rel->r_addend, tls_type))
4587 return FALSE;
4588
4589 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4590 {
e7b938ca 4591 /* One extra to simplify get_tls_mask. */
eea6121a 4592 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4593 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4594 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4595 return FALSE;
4596 }
4597 BFD_ASSERT (rel->r_offset % 8 == 0);
4598 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4599
4600 /* Mark the second slot of a GD or LD entry.
4601 -1 to indicate GD and -2 to indicate LD. */
4602 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4603 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4604 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4605 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4606 goto dodyn;
4607
4608 case R_PPC64_TPREL16:
4609 case R_PPC64_TPREL16_LO:
4610 case R_PPC64_TPREL16_HI:
4611 case R_PPC64_TPREL16_HA:
4612 case R_PPC64_TPREL16_DS:
4613 case R_PPC64_TPREL16_LO_DS:
4614 case R_PPC64_TPREL16_HIGHER:
4615 case R_PPC64_TPREL16_HIGHERA:
4616 case R_PPC64_TPREL16_HIGHEST:
4617 case R_PPC64_TPREL16_HIGHESTA:
4618 if (info->shared)
4619 {
4620 info->flags |= DF_STATIC_TLS;
4621 goto dodyn;
5d1634d7
AM		 4622 }
4623 break;
4624
e86ce104 4625 case R_PPC64_ADDR64:
1e2f5b6e 4626 if (opd_sym_map != NULL
1e2f5b6e 4627 && rel + 1 < rel_end
4ce794b7 4628 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4629 {
8387904d
AM		 4630 if (h != NULL)
4631 {
4632 if (h->root.root.string[0] == '.'
4633 && h->root.root.string[1] != 0
4634 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4635 ;
4636 else
4637 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4638 }
4639 else
4640 {
4641 asection *s;
1e2f5b6e 4642
8387904d
AM		 4643 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4644 r_symndx);
4645 if (s == NULL)
4646 return FALSE;
4647 else if (s != sec)
3f764659 4648 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4649 }
1e2f5b6e 4650 }
e86ce104
AM		 4651 /* Fall through. */
4652
04c9666a 4653 case R_PPC64_REL30:
5bd4f169 4654 case R_PPC64_REL32:
04c9666a 4655 case R_PPC64_REL64:
65f38f15
AM		 4656 case R_PPC64_ADDR14:
4657 case R_PPC64_ADDR14_BRNTAKEN:
4658 case R_PPC64_ADDR14_BRTAKEN:
4659 case R_PPC64_ADDR16:
4660 case R_PPC64_ADDR16_DS:
4661 case R_PPC64_ADDR16_HA:
4662 case R_PPC64_ADDR16_HI:
4663 case R_PPC64_ADDR16_HIGHER:
4664 case R_PPC64_ADDR16_HIGHERA:
4665 case R_PPC64_ADDR16_HIGHEST:
4666 case R_PPC64_ADDR16_HIGHESTA:
4667 case R_PPC64_ADDR16_LO:
4668 case R_PPC64_ADDR16_LO_DS:
4669 case R_PPC64_ADDR24:
65f38f15 4670 case R_PPC64_ADDR32:
65f38f15
AM		 4671 case R_PPC64_UADDR16:
4672 case R_PPC64_UADDR32:
4673 case R_PPC64_UADDR64:
5bd4f169 4674 case R_PPC64_TOC:
81848ca0
AM		 4675 if (h != NULL && !info->shared)
4676 /* We may need a copy reloc. */
f5385ebf 4677 h->non_got_ref = 1;
81848ca0 4678
41bd81ab 4679 /* Don't propagate .opd relocs. */
1e2f5b6e 4680 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4681 break;
e86ce104 4682
65f38f15
AM		 4683 /* If we are creating a shared library, and this is a reloc
4684 against a global symbol, or a non PC relative reloc
4685 against a local symbol, then we need to copy the reloc
4686 into the shared library. However, if we are linking with
4687 -Bsymbolic, we do not need to copy a reloc against a
4688 global symbol which is defined in an object we are
4689 including in the link (i.e., DEF_REGULAR is set). At
4690 this point we have not seen all the input files, so it is
4691 possible that DEF_REGULAR is not set now but will be set
4692 later (it is never cleared). In case of a weak definition,
4693 DEF_REGULAR may be cleared later by a strong definition in
4694 a shared library. We account for that possibility below by
f4656909 4695 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4696 table entry. A similar situation occurs when creating
4697 shared libraries and symbol visibility changes render the
4698 symbol local.
4699
4700 If on the other hand, we are creating an executable, we
4701 may need to keep relocations for symbols satisfied by a
4702 dynamic library if we manage to avoid copy relocs for the
4703 symbol. */
411e1bfb 4704 dodyn:
65f38f15 4705 if ((info->shared
411e1bfb 4706 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4707 || (h != NULL
4708 && (! info->symbolic
4709 || h->root.type == bfd_link_hash_defweak
f5385ebf 4710 || !h->def_regular))))
f4656909
AM		 4711 || (ELIMINATE_COPY_RELOCS
4712 && !info->shared
65f38f15
AM		 4713 && h != NULL
4714 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4715 || !h->def_regular)))
5bd4f169 4716 {
ec338859
AM		 4717 struct ppc_dyn_relocs *p;
4718 struct ppc_dyn_relocs **head;
4719
65f38f15
AM		 4720 /* We must copy these reloc types into the output file.
4721 Create a reloc section in dynobj and make room for
4722 this reloc. */
5bd4f169
AM		 4723 if (sreloc == NULL)
4724 {
4725 const char *name;
65f38f15 4726 bfd *dynobj;
5bd4f169
AM		 4727
4728 name = (bfd_elf_string_from_elf_section
4729 (abfd,
4730 elf_elfheader (abfd)->e_shstrndx,
4731 elf_section_data (sec)->rel_hdr.sh_name));
4732 if (name == NULL)
b34976b6 4733 return FALSE;
5bd4f169 4734
65f38f15
AM		 4735 if (strncmp (name, ".rela", 5) != 0
4736 || strcmp (bfd_get_section_name (abfd, sec),
4737 name + 5) != 0)
4738 {
4739 (*_bfd_error_handler)
d003868e
AM		 4740 (_("%B: bad relocation section name `%s\'"),
4741 abfd, name);
5d1634d7 4742 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4743 }
4744
65f38f15 4745 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4746 sreloc = bfd_get_section_by_name (dynobj, name);
4747 if (sreloc == NULL)
4748 {
4749 flagword flags;
4750
5bd4f169 4751 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4752 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4753 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4754 sreloc = bfd_make_section_with_flags (dynobj,
4755 name,
4756 flags);
5bd4f169 4757 if (sreloc == NULL
65f38f15 4758 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4759 return FALSE;
5bd4f169 4760 }
65f38f15 4761 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4762 }
4763
65f38f15
AM		 4764 /* If this is a global symbol, we count the number of
4765 relocations we need for this symbol. */
4766 if (h != NULL)
4767 {
ec338859 4768 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4769 }
4770 else
4771 {
ec338859
AM		 4772 /* Track dynamic relocs needed for local syms too.
4773 We really need local syms available to do this
4774 easily. Oh well. */
4775
4776 asection *s;
4777 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4778 sec, r_symndx);
4779 if (s == NULL)
b34976b6 4780 return FALSE;
ec338859
AM		 4781
4782 head = ((struct ppc_dyn_relocs **)
4783 &elf_section_data (s)->local_dynrel);
65f38f15 4784 }
ec338859
AM		 4785
4786 p = *head;
4787 if (p == NULL || p->sec != sec)
4788 {
4ce794b7 4789 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4790 if (p == NULL)
b34976b6 4791 return FALSE;
ec338859
AM		 4792 p->next = *head;
4793 *head = p;
4794 p->sec = sec;
4795 p->count = 0;
4796 p->pc_count = 0;
4797 }
4798
4799 p->count += 1;
411e1bfb 4800 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4801 p->pc_count += 1;
65f38f15 4802 }
5bd4f169 4803 break;
65f38f15
AM		 4804
4805 default:
96e0dda4 4806 break;
5bd4f169
AM		 4807 }
4808 }
4809
b34976b6 4810 return TRUE;
5bd4f169
AM		 4811}
4812
8387904d
AM		 4813/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4814 of the code entry point, and its section. */
4815
4816static bfd_vma
4817opd_entry_value (asection *opd_sec,
4818 bfd_vma offset,
4819 asection **code_sec,
4820 bfd_vma *code_off)
4821{
4822 bfd *opd_bfd = opd_sec->owner;
8860955f 4823 Elf_Internal_Rela *relocs;
8387904d 4824 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4825 bfd_vma val;
8387904d 4826
4b85d634
AM		 4827 /* No relocs implies we are linking a --just-symbols object. */
4828 if (opd_sec->reloc_count == 0)
4829 {
4830 bfd_vma val;
4831
4832 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4833 return (bfd_vma) -1;
3b36f7e6 4834
4b85d634
AM		 4835 if (code_sec != NULL)
4836 {
4837 asection *sec, *likely = NULL;
4838 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4839 if (sec->vma <= val
4840 && (sec->flags & SEC_LOAD) != 0
4841 && (sec->flags & SEC_ALLOC) != 0)
4842 likely = sec;
4843 if (likely != NULL)
4844 {
4845 *code_sec = likely;
4846 if (code_off != NULL)
4847 *code_off = val - likely->vma;
4848 }
4849 }
4850 return val;
4851 }
4852
8860955f
AM		 4853 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4854 if (relocs == NULL)
4855 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4856
8387904d 4857 /* Go find the opd reloc at the sym address. */
8860955f 4858 lo = relocs;
8387904d
AM		 4859 BFD_ASSERT (lo != NULL);
4860 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4861 val = (bfd_vma) -1;
8387904d
AM		 4862 while (lo < hi)
4863 {
4864 look = lo + (hi - lo) / 2;
4865 if (look->r_offset < offset)
4866 lo = look + 1;
4867 else if (look->r_offset > offset)
4868 hi = look;
4869 else
4870 {
4871 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4872 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4873 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4874 {
4875 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4876 asection *sec;
4877
4878 if (symndx < symtab_hdr->sh_info)
4879 {
4880 Elf_Internal_Sym *sym;
4881
4882 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4883 if (sym == NULL)
4884 {
4885 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4886 symtab_hdr->sh_info,
4887 0, NULL, NULL, NULL);
4888 if (sym == NULL)
645ea6a9 4889 break;
8387904d
AM		 4890 symtab_hdr->contents = (bfd_byte *) sym;
4891 }
4892
4893 sym += symndx;
4894 val = sym->st_value;
4895 sec = NULL;
4896 if ((sym->st_shndx != SHN_UNDEF
4897 && sym->st_shndx < SHN_LORESERVE)
4898 || sym->st_shndx > SHN_HIRESERVE)
4899 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4900 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4901 }
4902 else
4903 {
4904 struct elf_link_hash_entry **sym_hashes;
4905 struct elf_link_hash_entry *rh;
4906
4907 sym_hashes = elf_sym_hashes (opd_bfd);
4908 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4909 while (rh->root.type == bfd_link_hash_indirect
4910 || rh->root.type == bfd_link_hash_warning)
4911 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4912 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4913 || rh->root.type == bfd_link_hash_defweak);
4914 val = rh->root.u.def.value;
4915 sec = rh->root.u.def.section;
4916 }
4917 val += look->r_addend;
4918 if (code_off != NULL)
4919 *code_off = val;
4920 if (code_sec != NULL)
4921 *code_sec = sec;
4922 if (sec != NULL && sec->output_section != NULL)
4923 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4924 }
4925 break;
4926 }
4927 }
645ea6a9 4928
645ea6a9 4929 return val;
8387904d
AM		 4930}
4931
5bd4f169
AM		 4932/* Return the section that should be marked against GC for a given
4933 relocation. */
4934
4935static asection *
4ce794b7 4936ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4937 struct bfd_link_info *info,
4ce794b7
AM		 4938 Elf_Internal_Rela *rel,
4939 struct elf_link_hash_entry *h,
4940 Elf_Internal_Sym *sym)
5bd4f169 4941{
ccfa59ea
AM		 4942 asection *rsec;
4943
4944 /* First mark all our entry sym sections. */
4945 if (info->gc_sym_list != NULL)
4946 {
4947 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4948 struct bfd_sym_chain *sym = info->gc_sym_list;
4949
4950 info->gc_sym_list = NULL;
4951 do
4952 {
4953 struct ppc_link_hash_entry *eh;
4954
4955 eh = (struct ppc_link_hash_entry *)
4956 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4957 if (eh == NULL)
4958 continue;
4959 if (eh->elf.root.type != bfd_link_hash_defined
4960 && eh->elf.root.type != bfd_link_hash_defweak)
4961 continue;
4962
c4f68ce3
AM		 4963 if (eh->is_func_descriptor
4964 && (eh->oh->elf.root.type == bfd_link_hash_defined
4965 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4966 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4967 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4968 && opd_entry_value (eh->elf.root.u.def.section,
4969 eh->elf.root.u.def.value,
4970 &rsec, NULL) != (bfd_vma) -1)
4971 ;
ccfa59ea
AM		 4972 else
4973 continue;
4974
4975 if (!rsec->gc_mark)
4976 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4977
4978 rsec = eh->elf.root.u.def.section;
4979 if (!rsec->gc_mark)
4980 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4981
4982 sym = sym->next;
4983 }
4984 while (sym != NULL);
4985 }
4986
4987 /* Syms return NULL if we're marking .opd, so we avoid marking all
4988 function sections, as all functions are referenced in .opd. */
4989 rsec = NULL;
4990 if (get_opd_info (sec) != NULL)
4991 return rsec;
1e2f5b6e 4992
5bd4f169
AM		 4993 if (h != NULL)
4994 {
04c9666a 4995 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4996 struct ppc_link_hash_entry *eh;
a33d1f77 4997
4ce794b7 4998 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4999 switch (r_type)
5bd4f169
AM		 5000 {
5001 case R_PPC64_GNU_VTINHERIT:
5002 case R_PPC64_GNU_VTENTRY:
5003 break;
5004
5005 default:
5006 switch (h->root.type)
5007 {
5008 case bfd_link_hash_defined:
5009 case bfd_link_hash_defweak:
ccfa59ea 5010 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5011 if (eh->oh != NULL
5012 && eh->oh->is_func_descriptor
5013 && (eh->oh->elf.root.type == bfd_link_hash_defined
5014 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5015 eh = eh->oh;
1e2f5b6e
AM		 5016
5017 /* Function descriptor syms cause the associated
5018 function code sym section to be marked. */
c4f68ce3
AM		 5019 if (eh->is_func_descriptor
5020 && (eh->oh->elf.root.type == bfd_link_hash_defined
5021 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5022 {
5023 /* They also mark their opd section. */
5024 if (!eh->elf.root.u.def.section->gc_mark)
5025 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5026 ppc64_elf_gc_mark_hook);
5027
5028 rsec = eh->oh->elf.root.u.def.section;
5029 }
8387904d
AM		 5030 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5031 && opd_entry_value (eh->elf.root.u.def.section,
5032 eh->elf.root.u.def.value,
5033 &rsec, NULL) != (bfd_vma) -1)
5034 {
5035 if (!eh->elf.root.u.def.section->gc_mark)
5036 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5037 ppc64_elf_gc_mark_hook);
5038 }
ccfa59ea 5039 else
1e2f5b6e
AM		 5040 rsec = h->root.u.def.section;
5041 break;
5bd4f169
AM		 5042
5043 case bfd_link_hash_common:
1e2f5b6e
AM		 5044 rsec = h->root.u.c.p->section;
5045 break;
5bd4f169
AM		 5046
5047 default:
5048 break;
5049 }
5050 }
5051 }
5052 else
5053 {
1e2f5b6e
AM		 5054 asection **opd_sym_section;
5055
5056 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5057 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5058 if (opd_sym_section != NULL)
ccfa59ea
AM		 5059 {
5060 if (!rsec->gc_mark)
5061 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5062
3f764659 5063 rsec = opd_sym_section[sym->st_value / 8];
ccfa59ea 5064 }
5bd4f169
AM		 5065 }
5066
1e2f5b6e 5067 return rsec;
5bd4f169
AM		 5068}
5069
65f38f15
AM		 5070/* Update the .got, .plt. and dynamic reloc reference counts for the
5071 section being removed. */
5bd4f169 5072
b34976b6 5073static bfd_boolean
4ce794b7
AM		 5074ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5075 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5076{
411e1bfb 5077 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5078 Elf_Internal_Shdr *symtab_hdr;
5079 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5080 struct got_entry **local_got_ents;
5bd4f169 5081 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5082
680a3378
AM		 5083 if ((sec->flags & SEC_ALLOC) == 0)
5084 return TRUE;
5085
ec338859
AM		 5086 elf_section_data (sec)->local_dynrel = NULL;
5087
411e1bfb 5088 htab = ppc_hash_table (info);
5bd4f169
AM		 5089 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5090 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5091 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5092
5093 relend = relocs + sec->reloc_count;
5094 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5095 {
5096 unsigned long r_symndx;
04c9666a 5097 enum elf_ppc64_reloc_type r_type;
58ac9f71 5098 struct elf_link_hash_entry *h = NULL;
411e1bfb 5099 char tls_type = 0;
5bd4f169 5100
a33d1f77 5101 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5102 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5103 if (r_symndx >= symtab_hdr->sh_info)
5104 {
5105 struct ppc_link_hash_entry *eh;
5106 struct ppc_dyn_relocs **pp;
5107 struct ppc_dyn_relocs *p;
5108
5109 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5110 while (h->root.type == bfd_link_hash_indirect
5111 || h->root.type == bfd_link_hash_warning)
5112 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5113 eh = (struct ppc_link_hash_entry *) h;
5114
5115 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5116 if (p->sec == sec)
5117 {
5118 /* Everything must go for SEC. */
5119 *pp = p->next;
5120 break;
5121 }
5122 }
5123
a33d1f77
AM		 5124 switch (r_type)
5125 {
411e1bfb
AM		 5126 case R_PPC64_GOT_TLSLD16:
5127 case R_PPC64_GOT_TLSLD16_LO:
5128 case R_PPC64_GOT_TLSLD16_HI:
5129 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5130 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5131 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5132 goto dogot;
5133
5134 case R_PPC64_GOT_TLSGD16:
5135 case R_PPC64_GOT_TLSGD16_LO:
5136 case R_PPC64_GOT_TLSGD16_HI:
5137 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5138 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5139 goto dogot;
5140
5141 case R_PPC64_GOT_TPREL16_DS:
5142 case R_PPC64_GOT_TPREL16_LO_DS:
5143 case R_PPC64_GOT_TPREL16_HI:
5144 case R_PPC64_GOT_TPREL16_HA:
5145 tls_type = TLS_TLS | TLS_TPREL;
5146 goto dogot;
5147
5148 case R_PPC64_GOT_DTPREL16_DS:
5149 case R_PPC64_GOT_DTPREL16_LO_DS:
5150 case R_PPC64_GOT_DTPREL16_HI:
5151 case R_PPC64_GOT_DTPREL16_HA:
5152 tls_type = TLS_TLS | TLS_DTPREL;
5153 goto dogot;
5154
a33d1f77
AM		 5155 case R_PPC64_GOT16:
5156 case R_PPC64_GOT16_DS:
5157 case R_PPC64_GOT16_HA:
5158 case R_PPC64_GOT16_HI:
5159 case R_PPC64_GOT16_LO:
5160 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5161 dogot:
5162 {
5163 struct got_entry *ent;
5164
58ac9f71
AM		 5165 if (h != NULL)
5166 ent = h->got.glist;
411e1bfb
AM		 5167 else
5168 ent = local_got_ents[r_symndx];
5169
5170 for (; ent != NULL; ent = ent->next)
5171 if (ent->addend == rel->r_addend
e717da7e 5172 && ent->owner == abfd
411e1bfb
AM		 5173 && ent->tls_type == tls_type)
5174 break;
5175 if (ent == NULL)
5176 abort ();
5177 if (ent->got.refcount > 0)
5178 ent->got.refcount -= 1;
5179 }
a33d1f77 5180 break;
65f38f15 5181
a33d1f77
AM		 5182 case R_PPC64_PLT16_HA:
5183 case R_PPC64_PLT16_HI:
5184 case R_PPC64_PLT16_LO:
5185 case R_PPC64_PLT32:
5186 case R_PPC64_PLT64:
721956f4
AM		 5187 case R_PPC64_REL14:
5188 case R_PPC64_REL14_BRNTAKEN:
5189 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5190 case R_PPC64_REL24:
58ac9f71 5191 if (h != NULL)
5d1634d7 5192 {
411e1bfb
AM		 5193 struct plt_entry *ent;
5194
411e1bfb
AM		 5195 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5196 if (ent->addend == rel->r_addend)
5197 break;
5198 if (ent == NULL)
5199 abort ();
5200 if (ent->plt.refcount > 0)
5201 ent->plt.refcount -= 1;
5d1634d7 5202 }
e86ce104 5203 break;
5d1634d7 5204
a33d1f77
AM		 5205 default:
5206 break;
5207 }
5208 }
b34976b6 5209 return TRUE;
5bd4f169
AM		 5210}
5211
deb0e272
AM		 5212/* The maximum size of .sfpr. */
5213#define SFPR_MAX (218*4)
5214
5215struct sfpr_def_parms
5216{
699733f6
AM		 5217 const char name[12];
5218 unsigned char lo, hi;
deb0e272
AM		 5219 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5220 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5221};
5222
5223/* Auto-generate _save*, _rest* functions in .sfpr. */
5224
5225static unsigned int
5226sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5227{
5228 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5229 unsigned int i;
5230 size_t len = strlen (parm->name);
5231 bfd_boolean writing = FALSE;
699733f6 5232 char sym[16];
deb0e272
AM		 5233
5234 memcpy (sym, parm->name, len);
5235 sym[len + 2] = 0;
5236
5237 for (i = parm->lo; i <= parm->hi; i++)
5238 {
5239 struct elf_link_hash_entry *h;
5240
5241 sym[len + 0] = i / 10 + '0';
5242 sym[len + 1] = i % 10 + '0';
5243 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5244 if (h != NULL
f5385ebf 5245 && !h->def_regular)
deb0e272
AM		 5246 {
5247 h->root.type = bfd_link_hash_defined;
5248 h->root.u.def.section = htab->sfpr;
5249 h->root.u.def.value = htab->sfpr->size;
5250 h->type = STT_FUNC;
f5385ebf 5251 h->def_regular = 1;
deb0e272
AM		 5252 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5253 writing = TRUE;
5254 if (htab->sfpr->contents == NULL)
5255 {
5256 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5257 if (htab->sfpr->contents == NULL)
5258 return FALSE;
5259 }
5260 }
5261 if (writing)
5262 {
5263 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5264 if (i != parm->hi)
5265 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5266 else
5267 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5268 htab->sfpr->size = p - htab->sfpr->contents;
5269 }
5270 }
5271
5272 return TRUE;
5273}
5274
5275static bfd_byte *
5276savegpr0 (bfd *abfd, bfd_byte *p, int r)
5277{
5278 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5279 return p + 4;
5280}
5281
5282static bfd_byte *
5283savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5284{
5285 p = savegpr0 (abfd, p, r);
5286 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5287 p = p + 4;
5288 bfd_put_32 (abfd, BLR, p);
5289 return p + 4;
5290}
5291
5292static bfd_byte *
5293restgpr0 (bfd *abfd, bfd_byte *p, int r)
5294{
5295 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5296 return p + 4;
5297}
5298
5299static bfd_byte *
5300restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5301{
5302 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5303 p = p + 4;
5304 p = restgpr0 (abfd, p, r);
5305 bfd_put_32 (abfd, MTLR_R0, p);
5306 p = p + 4;
5307 if (r == 29)
5308 {
5309 p = restgpr0 (abfd, p, 30);
5310 p = restgpr0 (abfd, p, 31);
5311 }
5312 bfd_put_32 (abfd, BLR, p);
5313 return p + 4;
5314}
5315
5316static bfd_byte *
5317savegpr1 (bfd *abfd, bfd_byte *p, int r)
5318{
5319 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5320 return p + 4;
5321}
5322
5323static bfd_byte *
5324savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5325{
5326 p = savegpr1 (abfd, p, r);
5327 bfd_put_32 (abfd, BLR, p);
5328 return p + 4;
5329}
5330
5331static bfd_byte *
5332restgpr1 (bfd *abfd, bfd_byte *p, int r)
5333{
5334 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5335 return p + 4;
5336}
5337
5338static bfd_byte *
5339restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5340{
5341 p = restgpr1 (abfd, p, r);
5342 bfd_put_32 (abfd, BLR, p);
5343 return p + 4;
5344}
5345
5346static bfd_byte *
5347savefpr (bfd *abfd, bfd_byte *p, int r)
5348{
5349 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5350 return p + 4;
5351}
5352
5353static bfd_byte *
5354savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5355{
5356 p = savefpr (abfd, p, r);
5357 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5358 p = p + 4;
5359 bfd_put_32 (abfd, BLR, p);
5360 return p + 4;
5361}
5362
5363static bfd_byte *
5364restfpr (bfd *abfd, bfd_byte *p, int r)
5365{
5366 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5367 return p + 4;
5368}
5369
5370static bfd_byte *
5371restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5372{
5373 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5374 p = p + 4;
5375 p = restfpr (abfd, p, r);
5376 bfd_put_32 (abfd, MTLR_R0, p);
5377 p = p + 4;
5378 if (r == 29)
5379 {
5380 p = restfpr (abfd, p, 30);
5381 p = restfpr (abfd, p, 31);
5382 }
5383 bfd_put_32 (abfd, BLR, p);
5384 return p + 4;
5385}
5386
5387static bfd_byte *
5388savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5389{
5390 p = savefpr (abfd, p, r);
5391 bfd_put_32 (abfd, BLR, p);
5392 return p + 4;
5393}
5394
5395static bfd_byte *
5396restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5397{
5398 p = restfpr (abfd, p, r);
5399 bfd_put_32 (abfd, BLR, p);
5400 return p + 4;
5401}
5402
5403static bfd_byte *
5404savevr (bfd *abfd, bfd_byte *p, int r)
5405{
5406 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5407 p = p + 4;
5408 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5409 return p + 4;
5410}
5411
5412static bfd_byte *
5413savevr_tail (bfd *abfd, bfd_byte *p, int r)
5414{
5415 p = savevr (abfd, p, r);
5416 bfd_put_32 (abfd, BLR, p);
5417 return p + 4;
5418}
5419
5420static bfd_byte *
5421restvr (bfd *abfd, bfd_byte *p, int r)
5422{
5423 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5424 p = p + 4;
5425 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5426 return p + 4;
5427}
5428
5429static bfd_byte *
5430restvr_tail (bfd *abfd, bfd_byte *p, int r)
5431{
5432 p = restvr (abfd, p, r);
5433 bfd_put_32 (abfd, BLR, p);
5434 return p + 4;
5435}
5436
e86ce104
AM		 5437/* Called via elf_link_hash_traverse to transfer dynamic linking
5438 information on function code symbol entries to their corresponding
5439 function descriptor symbol entries. */
deb0e272 5440
b34976b6 5441static bfd_boolean
4ce794b7 5442func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5443{
e86ce104 5444 struct bfd_link_info *info;
65f38f15 5445 struct ppc_link_hash_table *htab;
411e1bfb 5446 struct plt_entry *ent;
50bc7936
AM		 5447 struct ppc_link_hash_entry *fh;
5448 struct ppc_link_hash_entry *fdh;
5449 bfd_boolean force_local;
5bd4f169 5450
50bc7936
AM		 5451 fh = (struct ppc_link_hash_entry *) h;
5452 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5453 return TRUE;
e86ce104 5454
50bc7936
AM		 5455 if (fh->elf.root.type == bfd_link_hash_warning)
5456 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5457
4ce794b7 5458 info = inf;
65f38f15 5459 htab = ppc_hash_table (info);
5bd4f169 5460
c09bdfe5
AM		 5461 /* Resolve undefined references to dot-symbols as the value
5462 in the function descriptor, if we have one in a regular object.
5463 This is to satisfy cases like ".quad .foo". Calls to functions
5464 in dynamic objects are handled elsewhere. */
5465 if (fh->elf.root.type == bfd_link_hash_undefweak
5466 && fh->was_undefined
5467 && (fh->oh->elf.root.type == bfd_link_hash_defined
5468 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5469 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5470 && opd_entry_value (fh->oh->elf.root.u.def.section,
5471 fh->oh->elf.root.u.def.value,
5472 &fh->elf.root.u.def.section,
5473 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5474 {
5475 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5476 fh->elf.forced_local = 1;
c09bdfe5
AM		 5477 }
5478
e86ce104
AM		 5479 /* If this is a function code symbol, transfer dynamic linking
5480 information to the function descriptor symbol. */
50bc7936 5481 if (!fh->is_func)
b34976b6 5482 return TRUE;
e86ce104 5483
50bc7936 5484 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5485 if (ent->plt.refcount > 0)
5486 break;
50bc7936
AM		 5487 if (ent == NULL
5488 || fh->elf.root.root.string[0] != '.'
5489 || fh->elf.root.root.string[1] == '\0')
5490 return TRUE;
5bd4f169 5491
50bc7936
AM		 5492 /* Find the corresponding function descriptor symbol. Create it
5493 as undefined if necessary. */
5bd4f169 5494
50bc7936
AM		 5495 fdh = get_fdh (fh, htab);
5496 if (fdh != NULL)
5497 while (fdh->elf.root.type == bfd_link_hash_indirect
5498 || fdh->elf.root.type == bfd_link_hash_warning)
5499 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5500
50bc7936
AM		 5501 if (fdh == NULL
5502 && info->shared
5503 && (fh->elf.root.type == bfd_link_hash_undefined
5504 || fh->elf.root.type == bfd_link_hash_undefweak))
5505 {
908b32fc 5506 fdh = make_fdh (info, fh);
bb700d78
AM		 5507 if (fdh == NULL)
5508 return FALSE;
50bc7936 5509 }
648cca2c 5510
908b32fc 5511 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5512 code symbol is strong undefined, make the fake sym the same.
5513 If the function code symbol is defined, then force the fake
5514 descriptor local; We can't support overriding of symbols in a
5515 shared library on a fake descriptor. */
908b32fc
AM		 5516
5517 if (fdh != NULL
5518 && fdh->fake
433817dd 5519 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5520 {
433817dd
AM		 5521 if (fh->elf.root.type == bfd_link_hash_undefined)
5522 {
5523 fdh->elf.root.type = bfd_link_hash_undefined;
5524 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5525 }
5526 else if (fh->elf.root.type == bfd_link_hash_defined
5527 || fh->elf.root.type == bfd_link_hash_defweak)
5528 {
5529 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5530 }
908b32fc
AM		 5531 }
5532
50bc7936 5533 if (fdh != NULL
f5385ebf 5534 && !fdh->elf.forced_local
50bc7936 5535 && (info->shared
f5385ebf
AM		 5536 || fdh->elf.def_dynamic
5537 || fdh->elf.ref_dynamic
50bc7936
AM		 5538 || (fdh->elf.root.type == bfd_link_hash_undefweak
5539 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5540 {
5541 if (fdh->elf.dynindx == -1)
c152c796 5542 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5543 return FALSE;
f5385ebf
AM		 5544 fdh->elf.ref_regular |= fh->elf.ref_regular;
5545 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5546 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5547 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5548 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5549 {
40d16e0b 5550 move_plt_plist (fh, fdh);
f5385ebf 5551 fdh->elf.needs_plt = 1;
e86ce104 5552 }
50bc7936 5553 fdh->is_func_descriptor = 1;
34814b9f
AM		 5554 fdh->oh = fh;
5555 fh->oh = fdh;
e86ce104
AM		 5556 }
5557
50bc7936
AM		 5558 /* Now that the info is on the function descriptor, clear the
5559 function code sym info. Any function code syms for which we
5560 don't have a definition in a regular file, we force local.
5561 This prevents a shared library from exporting syms that have
5562 been imported from another library. Function code syms that
5563 are really in the library we must leave global to prevent the
5564 linker dragging in a definition from a static library. */
93f3fa99
AM		 5565 force_local = (!fh->elf.def_regular
5566 || fdh == NULL
5567 || !fdh->elf.def_regular
5568 || fdh->elf.forced_local);
50bc7936
AM		 5569 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5570
b34976b6 5571 return TRUE;
e86ce104 5572}
40b8271b 5573
e86ce104 5574/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5575 this hook to a) provide some gcc support functions, and b) transfer
5576 dynamic linking information gathered so far on function code symbol
5577 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5578
b34976b6 5579static bfd_boolean
4ce794b7
AM		 5580ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5581 struct bfd_link_info *info)
e86ce104
AM		 5582{
5583 struct ppc_link_hash_table *htab;
82bd7b59 5584 unsigned int i;
deb0e272
AM		 5585 const struct sfpr_def_parms funcs[] =
5586 {
5587 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5588 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5589 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5590 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5591 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5592 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5593 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5594 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5595 { "._savef", 14, 31, savefpr, savefpr1_tail },
5596 { "._restf", 14, 31, restfpr, restfpr1_tail },
5597 { "_savevr_", 20, 31, savevr, savevr_tail },
5598 { "_restvr_", 20, 31, restvr, restvr_tail }
5599 };
e86ce104
AM		 5600
5601 htab = ppc_hash_table (info);
82bd7b59
AM		 5602 if (htab->sfpr == NULL)
5603 /* We don't have any relocs. */
b34976b6 5604 return TRUE;
82bd7b59 5605
deb0e272
AM		 5606 /* Provide any missing _save* and _rest* functions. */
5607 htab->sfpr->size = 0;
5608 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5609 if (!sfpr_define (info, &funcs[i]))
5610 return FALSE;
82bd7b59 5611
4ce794b7 5612 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5613
eea6121a 5614 if (htab->sfpr->size == 0)
8423293d 5615 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5616
b34976b6 5617 return TRUE;
e86ce104
AM		 5618}
5619
5620/* Adjust a symbol defined by a dynamic object and referenced by a
5621 regular object. The current definition is in some section of the
5622 dynamic object, but we're not including those sections. We have to
5623 change the definition to something the rest of the link can
5624 understand. */
5625
b34976b6 5626static bfd_boolean
4ce794b7
AM		 5627ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5628 struct elf_link_hash_entry *h)
e86ce104
AM		 5629{
5630 struct ppc_link_hash_table *htab;
e86ce104
AM		 5631 asection *s;
5632 unsigned int power_of_two;
5633
5634 htab = ppc_hash_table (info);
5635
5636 /* Deal with function syms. */
5637 if (h->type == STT_FUNC
f5385ebf 5638 || h->needs_plt)
e86ce104
AM		 5639 {
5640 /* Clear procedure linkage table information for any symbol that
5641 won't need a .plt entry. */
411e1bfb
AM		 5642 struct plt_entry *ent;
5643 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5644 if (ent->plt.refcount > 0)
5645 break;
8387904d 5646 if (ent == NULL
9c7a29a3
AM		 5647 || SYMBOL_CALLS_LOCAL (info, h)
5648 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5649 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5650 {
411e1bfb 5651 h->plt.plist = NULL;
f5385ebf 5652 h->needs_plt = 0;
40b8271b 5653 }
5bd4f169 5654 }
bbd7ec4a 5655 else
411e1bfb 5656 h->plt.plist = NULL;
5bd4f169
AM		 5657
5658 /* If this is a weak symbol, and there is a real definition, the
5659 processor independent code will have arranged for us to see the
5660 real definition first, and we can just use the same value. */
f6e332e6 5661 if (h->u.weakdef != NULL)
5bd4f169 5662 {
f6e332e6
AM		 5663 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5664 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5665 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5666 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5667 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5668 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5669 return TRUE;
5bd4f169
AM		 5670 }
5671
5bd4f169
AM		 5672 /* If we are creating a shared library, we must presume that the
5673 only references to the symbol are via the global offset table.
5674 For such cases we need not do anything here; the relocations will
5675 be handled correctly by relocate_section. */
5676 if (info->shared)
b34976b6 5677 return TRUE;
5bd4f169 5678
65f38f15
AM		 5679 /* If there are no references to this symbol that do not use the
5680 GOT, we don't need to generate a copy reloc. */
f5385ebf 5681 if (!h->non_got_ref)
b34976b6 5682 return TRUE;
65f38f15 5683
f4656909 5684 if (ELIMINATE_COPY_RELOCS)
65f38f15 5685 {
f4656909
AM		 5686 struct ppc_link_hash_entry * eh;
5687 struct ppc_dyn_relocs *p;
65f38f15 5688
f4656909
AM		 5689 eh = (struct ppc_link_hash_entry *) h;
5690 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5691 {
5692 s = p->sec->output_section;
5693 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5694 break;
5695 }
5696
5697 /* If we didn't find any dynamic relocs in read-only sections, then
5698 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5699 if (p == NULL)
5700 {
f5385ebf 5701 h->non_got_ref = 0;
f4656909
AM		 5702 return TRUE;
5703 }
65f38f15
AM		 5704 }
5705
5d35169e 5706 if (h->plt.plist != NULL)
97b639ba
AM		 5707 {
5708 /* We should never get here, but unfortunately there are versions
5709 of gcc out there that improperly (for this ABI) put initialized
5710 function pointers, vtable refs and suchlike in read-only
5711 sections. Allow them to proceed, but warn that this might
5712 break at runtime. */
5713 (*_bfd_error_handler)
5714 (_("copy reloc against `%s' requires lazy plt linking; "
5715 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5716 h->root.root.string);
5717 }
5d35169e
AM		 5718
5719 /* This is a reference to a symbol defined by a dynamic object which
5720 is not a function. */
5721
5bd4f169
AM		 5722 /* We must allocate the symbol in our .dynbss section, which will
5723 become part of the .bss section of the executable. There will be
5724 an entry for this symbol in the .dynsym section. The dynamic
5725 object will contain position independent code, so all references
5726 from the dynamic object to this symbol will go through the global
5727 offset table. The dynamic linker will use the .dynsym entry to
5728 determine the address it must put in the global offset table, so
5729 both the dynamic object and the regular object will refer to the
5730 same memory location for the variable. */
5bd4f169 5731
04c9666a
AM		 5732 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5733 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5734 runtime process image. We need to remember the offset into the
5735 .rela.bss section we are going to use. */
5736 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5737 {
eea6121a 5738 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5739 h->needs_copy = 1;
5bd4f169
AM		 5740 }
5741
5742 /* We need to figure out the alignment required for this symbol. I
5743 have no idea how ELF linkers handle this. */
5744 power_of_two = bfd_log2 (h->size);
5745 if (power_of_two > 4)
5746 power_of_two = 4;
5747
5748 /* Apply the required alignment. */
4ce794b7 5749 s = htab->dynbss;
eea6121a 5750 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5751 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5752 {
65f38f15 5753 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5754 return FALSE;
5bd4f169
AM		 5755 }
5756
5757 /* Define the symbol as being at this point in the section. */
5758 h->root.u.def.section = s;
eea6121a 5759 h->root.u.def.value = s->size;
5bd4f169
AM		 5760
5761 /* Increment the section size to make room for the symbol. */
eea6121a 5762 s->size += h->size;
5bd4f169 5763
b34976b6 5764 return TRUE;
5bd4f169
AM		 5765}
5766
e86ce104
AM		 5767/* If given a function descriptor symbol, hide both the function code
5768 sym and the descriptor. */
5769static void
4ce794b7
AM		 5770ppc64_elf_hide_symbol (struct bfd_link_info *info,
5771 struct elf_link_hash_entry *h,
5772 bfd_boolean force_local)
e86ce104 5773{
34814b9f 5774 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5775 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5776
34814b9f
AM		 5777 eh = (struct ppc_link_hash_entry *) h;
5778 if (eh->is_func_descriptor)
e86ce104 5779 {
34814b9f 5780 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5781
721956f4 5782 if (fh == NULL)
d1329ca3
AM		 5783 {
5784 const char *p, *q;
5785 struct ppc_link_hash_table *htab;
5786 char save;
5787
5788 /* We aren't supposed to use alloca in BFD because on
5789 systems which do not have alloca the version in libiberty
5790 calls xmalloc, which might cause the program to crash
5791 when it runs out of memory. This function doesn't have a
5792 return status, so there's no way to gracefully return an
5793 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5794 accessed; It's either a string in an ELF string table,
5795 or allocated in an objalloc structure. */
d1329ca3 5796
34814b9f 5797 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5798 save = *p;
5799 *(char *) p = '.';
5800 htab = ppc_hash_table (info);
34814b9f
AM		 5801 fh = (struct ppc_link_hash_entry *)
5802 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5803 *(char *) p = save;
5804
5805 /* Unfortunately, if it so happens that the string we were
5806 looking for was allocated immediately before this string,
5807 then we overwrote the string terminator. That's the only
5808 reason the lookup should fail. */
5809 if (fh == NULL)
5810 {
34814b9f
AM		 5811 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5812 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5813 --q, --p;
34814b9f
AM		 5814 if (q < eh->elf.root.root.string && *p == '.')
5815 fh = (struct ppc_link_hash_entry *)
5816 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5817 }
5818 if (fh != NULL)
5819 {
34814b9f
AM		 5820 eh->oh = fh;
5821 fh->oh = eh;
d1329ca3
AM		 5822 }
5823 }
e86ce104 5824 if (fh != NULL)
34814b9f 5825 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5826 }
5827}
5828
411e1bfb 5829static bfd_boolean
8843416a
AM		 5830get_sym_h (struct elf_link_hash_entry **hp,
5831 Elf_Internal_Sym **symp,
5832 asection **symsecp,
5833 char **tls_maskp,
5834 Elf_Internal_Sym **locsymsp,
5835 unsigned long r_symndx,
5836 bfd *ibfd)
411e1bfb
AM		 5837{
5838 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5839
5840 if (r_symndx >= symtab_hdr->sh_info)
5841 {
5842 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5843 struct elf_link_hash_entry *h;
5844
5845 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5846 while (h->root.type == bfd_link_hash_indirect
5847 || h->root.type == bfd_link_hash_warning)
5848 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5849
5850 if (hp != NULL)
5851 *hp = h;
5852
5853 if (symp != NULL)
5854 *symp = NULL;
5855
5856 if (symsecp != NULL)
5857 {
5858 asection *symsec = NULL;
5859 if (h->root.type == bfd_link_hash_defined
5860 || h->root.type == bfd_link_hash_defweak)
5861 symsec = h->root.u.def.section;
5862 *symsecp = symsec;
5863 }
5864
e7b938ca 5865 if (tls_maskp != NULL)
411e1bfb
AM		 5866 {
5867 struct ppc_link_hash_entry *eh;
5868
5869 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5870 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5871 }
5872 }
5873 else
5874 {
5875 Elf_Internal_Sym *sym;
5876 Elf_Internal_Sym *locsyms = *locsymsp;
5877
5878 if (locsyms == NULL)
5879 {
5880 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5881 if (locsyms == NULL)
5882 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5883 symtab_hdr->sh_info,
5884 0, NULL, NULL, NULL);
5885 if (locsyms == NULL)
5886 return FALSE;
5887 *locsymsp = locsyms;
5888 }
5889 sym = locsyms + r_symndx;
5890
5891 if (hp != NULL)
5892 *hp = NULL;
5893
5894 if (symp != NULL)
5895 *symp = sym;
5896
5897 if (symsecp != NULL)
5898 {
5899 asection *symsec = NULL;
5900 if ((sym->st_shndx != SHN_UNDEF
5901 && sym->st_shndx < SHN_LORESERVE)
5902 || sym->st_shndx > SHN_HIRESERVE)
5903 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5904 *symsecp = symsec;
5905 }
5906
e7b938ca 5907 if (tls_maskp != NULL)
411e1bfb
AM		 5908 {
5909 struct got_entry **lgot_ents;
e7b938ca 5910 char *tls_mask;
411e1bfb 5911
e7b938ca 5912 tls_mask = NULL;
411e1bfb
AM		 5913 lgot_ents = elf_local_got_ents (ibfd);
5914 if (lgot_ents != NULL)
5915 {
e7b938ca
AM		 5916 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5917 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5918 }
e7b938ca 5919 *tls_maskp = tls_mask;
411e1bfb
AM		 5920 }
5921 }
5922 return TRUE;
5923}
5924
e7b938ca 5925/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5926 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5927 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5928
5929static int
0d4792f7
AM		 5930get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5931 Elf_Internal_Sym **locsymsp,
4ce794b7 5932 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5933{
5934 unsigned long r_symndx;
0d4792f7 5935 int next_r;
411e1bfb
AM		 5936 struct elf_link_hash_entry *h;
5937 Elf_Internal_Sym *sym;
5938 asection *sec;
5939 bfd_vma off;
5940
5941 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5942 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5943 return 0;
411e1bfb 5944
e7b938ca 5945 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5946 || sec == NULL
5947 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5948 return 1;
411e1bfb
AM		 5949
5950 /* Look inside a TOC section too. */
5951 if (h != NULL)
5952 {
5953 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5954 off = h->root.u.def.value;
5955 }
5956 else
5957 off = sym->st_value;
5958 off += rel->r_addend;
5959 BFD_ASSERT (off % 8 == 0);
5960 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5961 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5962 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5963 return 0;
0d4792f7
AM		 5964 if (toc_symndx != NULL)
5965 *toc_symndx = r_symndx;
5966 if ((h == NULL
5967 || ((h->root.type == bfd_link_hash_defined
5968 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5969 && !h->def_dynamic))
0d4792f7
AM		 5970 && (next_r == -1 || next_r == -2))
5971 return 1 - next_r;
951fd09b 5972 return 1;
411e1bfb
AM		 5973}
5974
754021d0 5975/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5976 code for the old ABI, these will already have been done. */
754021d0
AM		 5977
5978static bfd_boolean
5979adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5980{
5981 struct ppc_link_hash_entry *eh;
5982 asection *sym_sec;
5983 long *opd_adjust;
5984
5985 if (h->root.type == bfd_link_hash_indirect)
5986 return TRUE;
5987
5988 if (h->root.type == bfd_link_hash_warning)
5989 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5990
5991 if (h->root.type != bfd_link_hash_defined
5992 && h->root.type != bfd_link_hash_defweak)
5993 return TRUE;
5994
5995 eh = (struct ppc_link_hash_entry *) h;
5996 if (eh->adjust_done)
5997 return TRUE;
5998
5999 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 6000 opd_adjust = get_opd_info (sym_sec);
6001 if (opd_adjust != NULL)
754021d0 6002 {
3f764659 6003 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6004 if (adjust == -1)
6005 {
6006 /* This entry has been deleted. */
433817dd 6007 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
81688140
AM		 6008 if (dsec == NULL)
6009 {
6010 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6011 if (elf_discarded_section (dsec))
6012 {
433817dd 6013 ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
81688140
AM		 6014 break;
6015 }
6016 }
4025353c 6017 eh->elf.root.u.def.value = 0;
81688140 6018 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6019 }
6020 else
6021 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6022 eh->adjust_done = 1;
6023 }
6024 return TRUE;
6025}
6026
8c1d1bb8
AM		 6027/* Handles decrementing dynamic reloc counts for the reloc specified by
6028 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6029 have already been determined. */
6030
6031static bfd_boolean
6032dec_dynrel_count (bfd_vma r_info,
6033 asection *sec,
6034 struct bfd_link_info *info,
6035 Elf_Internal_Sym **local_syms,
6036 struct elf_link_hash_entry *h,
6037 asection *sym_sec)
6038{
6039 enum elf_ppc64_reloc_type r_type;
6040 struct ppc_dyn_relocs *p;
6041 struct ppc_dyn_relocs **pp;
6042
6043 /* Can this reloc be dynamic? This switch, and later tests here
6044 should be kept in sync with the code in check_relocs. */
6045 r_type = ELF64_R_TYPE (r_info);
6046 switch (r_type)
6047 {
6048 default:
6049 return TRUE;
6050
6051 case R_PPC64_TPREL16:
6052 case R_PPC64_TPREL16_LO:
6053 case R_PPC64_TPREL16_HI:
6054 case R_PPC64_TPREL16_HA:
6055 case R_PPC64_TPREL16_DS:
6056 case R_PPC64_TPREL16_LO_DS:
6057 case R_PPC64_TPREL16_HIGHER:
6058 case R_PPC64_TPREL16_HIGHERA:
6059 case R_PPC64_TPREL16_HIGHEST:
6060 case R_PPC64_TPREL16_HIGHESTA:
6061 if (!info->shared)
6062 return TRUE;
6063
6064 case R_PPC64_TPREL64:
6065 case R_PPC64_DTPMOD64:
6066 case R_PPC64_DTPREL64:
6067 case R_PPC64_ADDR64:
6068 case R_PPC64_REL30:
6069 case R_PPC64_REL32:
6070 case R_PPC64_REL64:
6071 case R_PPC64_ADDR14:
6072 case R_PPC64_ADDR14_BRNTAKEN:
6073 case R_PPC64_ADDR14_BRTAKEN:
6074 case R_PPC64_ADDR16:
6075 case R_PPC64_ADDR16_DS:
6076 case R_PPC64_ADDR16_HA:
6077 case R_PPC64_ADDR16_HI:
6078 case R_PPC64_ADDR16_HIGHER:
6079 case R_PPC64_ADDR16_HIGHERA:
6080 case R_PPC64_ADDR16_HIGHEST:
6081 case R_PPC64_ADDR16_HIGHESTA:
6082 case R_PPC64_ADDR16_LO:
6083 case R_PPC64_ADDR16_LO_DS:
6084 case R_PPC64_ADDR24:
6085 case R_PPC64_ADDR32:
6086 case R_PPC64_UADDR16:
6087 case R_PPC64_UADDR32:
6088 case R_PPC64_UADDR64:
6089 case R_PPC64_TOC:
6090 break;
6091 }
6092
6093 if (local_syms != NULL)
6094 {
6095 unsigned long r_symndx;
6096 Elf_Internal_Sym *sym;
6097 bfd *ibfd = sec->owner;
6098
6099 r_symndx = ELF64_R_SYM (r_info);
6100 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6101 return FALSE;
6102 }
6103
6104 if ((info->shared
6105 && (MUST_BE_DYN_RELOC (r_type)
6106 || (h != NULL
6107 && (!info->symbolic
6108 || h->root.type == bfd_link_hash_defweak
6109 || !h->def_regular))))
6110 || (ELIMINATE_COPY_RELOCS
6111 && !info->shared
6112 && h != NULL
6113 && (h->root.type == bfd_link_hash_defweak
6114 || !h->def_regular)))
6115 ;
6116 else
6117 return TRUE;
6118
6119 if (h != NULL)
6120 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6121 else if (sym_sec != NULL)
6122 pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel;
6123 else
6124 pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel;
6125
6126 while ((p = *pp) != NULL)
6127 {
6128 if (p->sec == sec)
6129 {
6130 if (!MUST_BE_DYN_RELOC (r_type))
6131 p->pc_count -= 1;
6132 p->count -= 1;
6133 if (p->count == 0)
6134 *pp = p->next;
6135 return TRUE;
6136 }
6137 pp = &p->next;
6138 }
6139
6140 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6141 sec->owner, sec);
6142 bfd_set_error (bfd_error_bad_value);
6143 return FALSE;
6144}
6145
754021d0
AM		 6146/* Remove unused Official Procedure Descriptor entries. Currently we
6147 only remove those associated with functions in discarded link-once
6148 sections, or weakly defined functions that have been overridden. It
6149 would be possible to remove many more entries for statically linked
6150 applications. */
6151
b34976b6 6152bfd_boolean
3f764659
JJ		 6153ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6154 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6155{
6156 bfd *ibfd;
754021d0 6157 bfd_boolean some_edited = FALSE;
3f764659 6158 asection *need_pad = NULL;
1e2f5b6e 6159
411e1bfb 6160 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6161 {
6162 asection *sec;
6163 Elf_Internal_Rela *relstart, *rel, *relend;
6164 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6165 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6166 struct elf_link_hash_entry **sym_hashes;
6167 bfd_vma offset;
d6fe2dc1 6168 bfd_size_type amt;
4025353c 6169 long *opd_adjust;
3f764659
JJ		 6170 bfd_boolean need_edit, add_aux_fields;
6171 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6172
6173 sec = bfd_get_section_by_name (ibfd, ".opd");
6174 if (sec == NULL)
6175 continue;
6176
3f764659 6177 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6178 opd_adjust = get_opd_info (sec);
6179 if (opd_adjust == NULL)
d6fe2dc1 6180 {
4b85d634
AM		 6181 /* check_relocs hasn't been called. Must be a ld -r link
6182 or --just-symbols object. */
4025353c
AM		 6183 opd_adjust = bfd_zalloc (obfd, amt);
6184 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 6185 }
4025353c 6186 memset (opd_adjust, 0, amt);
1e2f5b6e 6187
4b85d634
AM		 6188 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6189 continue;
6190
1e2f5b6e
AM		 6191 if (sec->output_section == bfd_abs_section_ptr)
6192 continue;
6193
6194 /* Look through the section relocs. */
6195 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6196 continue;
6197
6cdc0ccc 6198 local_syms = NULL;
1e2f5b6e
AM		 6199 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6200 sym_hashes = elf_sym_hashes (ibfd);
6201
6202 /* Read the relocations. */
4ce794b7 6203 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6204 info->keep_memory);
1e2f5b6e 6205 if (relstart == NULL)
b34976b6 6206 return FALSE;
1e2f5b6e
AM		 6207
6208 /* First run through the relocs to check they are sane, and to
6209 determine whether we need to edit this opd section. */
b34976b6 6210 need_edit = FALSE;
3f764659 6211 need_pad = sec;
1e2f5b6e
AM		 6212 offset = 0;
6213 relend = relstart + sec->reloc_count;
50bc7936 6214 for (rel = relstart; rel < relend; )
1e2f5b6e 6215 {
04c9666a 6216 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6217 unsigned long r_symndx;
6218 asection *sym_sec;
6219 struct elf_link_hash_entry *h;
6220 Elf_Internal_Sym *sym;
6221
3f764659 6222 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6223 only interested in the reloc pointing to a function entry
6224 point. */
50bc7936
AM		 6225 if (rel->r_offset != offset
6226 || rel + 1 >= relend
6227 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6228 {
6229 /* If someone messes with .opd alignment then after a
6230 "ld -r" we might have padding in the middle of .opd.
6231 Also, there's nothing to prevent someone putting
6232 something silly in .opd with the assembler. No .opd
b34976b6 6233 optimization for them! */
3f764659 6234 broken_opd:
1e2f5b6e 6235 (*_bfd_error_handler)
d003868e 6236 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6237 need_edit = FALSE;
1e2f5b6e
AM		 6238 break;
6239 }
6240
50bc7936
AM		 6241 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6242 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6243 {
6244 (*_bfd_error_handler)
d003868e
AM		 6245 (_("%B: unexpected reloc type %u in .opd section"),
6246 ibfd, r_type);
50bc7936
AM		 6247 need_edit = FALSE;
6248 break;
6249 }
6250
1e2f5b6e 6251 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6252 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6253 r_symndx, ibfd))
50bc7936 6254 goto error_ret;
1e2f5b6e
AM		 6255
6256 if (sym_sec == NULL || sym_sec->owner == NULL)
6257 {
411e1bfb
AM		 6258 const char *sym_name;
6259 if (h != NULL)
6260 sym_name = h->root.root.string;
6261 else
26c61ae5
L		 6262 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6263 sym_sec);
411e1bfb 6264
1e2f5b6e 6265 (*_bfd_error_handler)
d003868e
AM		 6266 (_("%B: undefined sym `%s' in .opd section"),
6267 ibfd, sym_name);
b34976b6 6268 need_edit = FALSE;
1e2f5b6e
AM		 6269 break;
6270 }
6271
51020317
AM		 6272 /* opd entries are always for functions defined in the
6273 current input bfd. If the symbol isn't defined in the
6274 input bfd, then we won't be using the function in this
6275 bfd; It must be defined in a linkonce section in another
6276 bfd, or is weak. It's also possible that we are
6277 discarding the function due to a linker script /DISCARD/,
6278 which we test for via the output_section. */
6279 if (sym_sec->owner != ibfd
6280 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6281 need_edit = TRUE;
1e2f5b6e 6282
50bc7936 6283 rel += 2;
3f764659
JJ		 6284 if (rel == relend
6285 || (rel + 1 == relend && rel->r_offset == offset + 16))
6286 {
6287 if (sec->size == offset + 24)
6288 {
6289 need_pad = NULL;
6290 break;
6291 }
6292 if (rel == relend && sec->size == offset + 16)
6293 {
6294 cnt_16b++;
6295 break;
6296 }
6297 goto broken_opd;
6298 }
6299
6300 if (rel->r_offset == offset + 24)
6301 offset += 24;
6302 else if (rel->r_offset != offset + 16)
6303 goto broken_opd;
6304 else if (rel + 1 < relend
6305 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6306 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6307 {
6308 offset += 16;
6309 cnt_16b++;
6310 }
6311 else if (rel + 2 < relend
6312 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6313 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6314 {
6315 offset += 24;
6316 rel += 1;
6317 }
6318 else
6319 goto broken_opd;
1e2f5b6e
AM		 6320 }
6321
3f764659
JJ		 6322 add_aux_fields = non_overlapping && cnt_16b > 0;
6323
6324 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6325 {
6326 Elf_Internal_Rela *write_rel;
6327 bfd_byte *rptr, *wptr;
3f764659 6328 bfd_byte *new_contents = NULL;
b34976b6 6329 bfd_boolean skip;
3f764659 6330 long opd_ent_size;
1e2f5b6e
AM		 6331
6332 /* This seems a waste of time as input .opd sections are all
6333 zeros as generated by gcc, but I suppose there's no reason
6334 this will always be so. We might start putting something in
6335 the third word of .opd entries. */
6336 if ((sec->flags & SEC_IN_MEMORY) == 0)
6337 {
eea6121a
AM		 6338 bfd_byte *loc;
6339 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6340 {
eea6121a
AM		 6341 if (loc != NULL)
6342 free (loc);
50bc7936 6343 error_ret:
6cdc0ccc
AM		 6344 if (local_syms != NULL
6345 && symtab_hdr->contents != (unsigned char *) local_syms)
6346 free (local_syms);
6cdc0ccc
AM		 6347 if (elf_section_data (sec)->relocs != relstart)
6348 free (relstart);
b34976b6 6349 return FALSE;
6cdc0ccc 6350 }
1e2f5b6e
AM		 6351 sec->contents = loc;
6352 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6353 }
6354
6355 elf_section_data (sec)->relocs = relstart;
6356
6357 wptr = sec->contents;
6358 rptr = sec->contents;
3f764659
JJ		 6359 new_contents = sec->contents;
6360
6361 if (add_aux_fields)
6362 {
6363 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6364 if (new_contents == NULL)
6365 return FALSE;
6366 need_pad = FALSE;
6367 wptr = new_contents;
6368 }
6369
1e2f5b6e 6370 write_rel = relstart;
b34976b6 6371 skip = FALSE;
1e2f5b6e 6372 offset = 0;
3f764659 6373 opd_ent_size = 0;
1e2f5b6e
AM		 6374 for (rel = relstart; rel < relend; rel++)
6375 {
50bc7936
AM		 6376 unsigned long r_symndx;
6377 asection *sym_sec;
6378 struct elf_link_hash_entry *h;
6379 Elf_Internal_Sym *sym;
6380
6381 r_symndx = ELF64_R_SYM (rel->r_info);
6382 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6383 r_symndx, ibfd))
50bc7936
AM		 6384 goto error_ret;
6385
1e2f5b6e
AM		 6386 if (rel->r_offset == offset)
6387 {
50bc7936 6388 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6389
6390 /* See if the .opd entry is full 24 byte or
6391 16 byte (with fd_aux entry overlapped with next
6392 fd_func). */
6393 opd_ent_size = 24;
6394 if ((rel + 2 == relend && sec->size == offset + 16)
6395 || (rel + 3 < relend
6396 && rel[2].r_offset == offset + 16
6397 && rel[3].r_offset == offset + 24
6398 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6399 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6400 opd_ent_size = 16;
6401
4025353c
AM		 6402 if (h != NULL
6403 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6404 {
6405 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6406 ppc_hash_table (info));
6407 if (fdh != NULL
6408 && fdh->elf.root.type != bfd_link_hash_defined
6409 && fdh->elf.root.type != bfd_link_hash_defweak)
6410 fdh = NULL;
6411 }
1e2f5b6e 6412
51020317
AM		 6413 skip = (sym_sec->owner != ibfd
6414 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6415 if (skip)
6416 {
4025353c 6417 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6418 {
6419 /* Arrange for the function descriptor sym
6420 to be dropped. */
d6fe2dc1
AM		 6421 fdh->elf.root.u.def.value = 0;
6422 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6423 }
3f764659 6424 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6425 }
6426 else
1e2f5b6e
AM		 6427 {
6428 /* We'll be keeping this opd entry. */
6429
4025353c 6430 if (fdh != NULL)
1e2f5b6e 6431 {
754021d0
AM		 6432 /* Redefine the function descriptor symbol to
6433 this location in the opd section. It is
6434 necessary to update the value here rather
6435 than using an array of adjustments as we do
6436 for local symbols, because various places
6437 in the generic ELF code use the value
6438 stored in u.def.value. */
3f764659 6439 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6440 fdh->adjust_done = 1;
1e2f5b6e 6441 }
754021d0
AM		 6442
6443 /* Local syms are a bit tricky. We could
6444 tweak them as they can be cached, but
6445 we'd need to look through the local syms
6446 for the function descriptor sym which we
6447 don't have at the moment. So keep an
6448 array of adjustments. */
3f764659
JJ		 6449 opd_adjust[rel->r_offset / 8]
6450 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6451
6452 if (wptr != rptr)
3f764659
JJ		 6453 memcpy (wptr, rptr, opd_ent_size);
6454 wptr += opd_ent_size;
6455 if (add_aux_fields && opd_ent_size == 16)
6456 {
6457 memset (wptr, '\0', 8);
6458 wptr += 8;
6459 }
1e2f5b6e 6460 }
3f764659
JJ		 6461 rptr += opd_ent_size;
6462 offset += opd_ent_size;
1e2f5b6e
AM		 6463 }
6464
50bc7936
AM		 6465 if (skip)
6466 {
8c1d1bb8
AM		 6467 if (!dec_dynrel_count (rel->r_info, sec, info,
6468 NULL, h, sym_sec))
6469 goto error_ret;
50bc7936
AM		 6470 }
6471 else
1e2f5b6e 6472 {
50bc7936
AM		 6473 /* We need to adjust any reloc offsets to point to the
6474 new opd entries. While we're at it, we may as well
6475 remove redundant relocs. */
3f764659 6476 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6477 if (write_rel != rel)
6478 memcpy (write_rel, rel, sizeof (*rel));
6479 ++write_rel;
6480 }
6481 }
6482
3f764659 6483 sec->size = wptr - new_contents;
1e2f5b6e 6484 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6485 if (add_aux_fields)
6486 {
6487 free (sec->contents);
6488 sec->contents = new_contents;
6489 }
6490
cdcf6e38
AM		 6491 /* Fudge the size too, as this is used later in
6492 elf_bfd_final_link if we are emitting relocs. */
6493 elf_section_data (sec)->rel_hdr.sh_size
6494 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6495 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6496 some_edited = TRUE;
1e2f5b6e 6497 }
6cdc0ccc 6498 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6499 free (relstart);
6cdc0ccc 6500
411e1bfb
AM		 6501 if (local_syms != NULL
6502 && symtab_hdr->contents != (unsigned char *) local_syms)
6503 {
6504 if (!info->keep_memory)
6505 free (local_syms);
6506 else
6507 symtab_hdr->contents = (unsigned char *) local_syms;
6508 }
6509 }
6510
754021d0
AM		 6511 if (some_edited)
6512 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6513
3f764659
JJ		 6514 /* If we are doing a final link and the last .opd entry is just 16 byte
6515 long, add a 8 byte padding after it. */
6516 if (need_pad != NULL && !info->relocatable)
6517 {
6518 bfd_byte *p;
6519
6520 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6521 {
6522 BFD_ASSERT (need_pad->size > 0);
6523
6524 p = bfd_malloc (need_pad->size + 8);
6525 if (p == NULL)
6526 return FALSE;
699733f6 6527
3f764659
JJ		 6528 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6529 p, 0, need_pad->size))
6530 return FALSE;
6531
6532 need_pad->contents = p;
6533 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6534 }
6535 else
6536 {
6537 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6538 if (p == NULL)
6539 return FALSE;
6540
6541 need_pad->contents = p;
6542 }
6543
6544 memset (need_pad->contents + need_pad->size, 0, 8);
6545 need_pad->size += 8;
6546 }
6547
411e1bfb
AM		 6548 return TRUE;
6549}
6550
e1918d23 6551/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6552
e1918d23 6553asection *
4ce794b7 6554ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6555{
411e1bfb
AM		 6556 struct ppc_link_hash_table *htab;
6557
411e1bfb 6558 htab = ppc_hash_table (info);
a48ebf4d
AM		 6559 if (htab->tls_get_addr != NULL)
6560 {
8387904d 6561 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6562
8387904d
AM		 6563 while (h->elf.root.type == bfd_link_hash_indirect
6564 || h->elf.root.type == bfd_link_hash_warning)
6565 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6566
6567 htab->tls_get_addr = h;
8387904d
AM		 6568
6569 if (htab->tls_get_addr_fd == NULL
6570 && h->oh != NULL
c4f68ce3
AM		 6571 && h->oh->is_func_descriptor
6572 && (h->oh->elf.root.type == bfd_link_hash_defined
6573 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6574 htab->tls_get_addr_fd = h->oh;
6575 }
6576
6577 if (htab->tls_get_addr_fd != NULL)
6578 {
6579 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6580
6581 while (h->elf.root.type == bfd_link_hash_indirect
6582 || h->elf.root.type == bfd_link_hash_warning)
6583 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6584
6585 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6586 }
6587
e1918d23 6588 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6589}
411e1bfb 6590
951fd09b
AM		 6591/* Run through all the TLS relocs looking for optimization
6592 opportunities. The linker has been hacked (see ppc64elf.em) to do
6593 a preliminary section layout so that we know the TLS segment
6594 offsets. We can't optimize earlier because some optimizations need
6595 to know the tp offset, and we need to optimize before allocating
6596 dynamic relocations. */
6597
6598bfd_boolean
4ce794b7 6599ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6600{
6601 bfd *ibfd;
6602 asection *sec;
6603 struct ppc_link_hash_table *htab;
6604
1049f94e 6605 if (info->relocatable || info->shared)
411e1bfb
AM		 6606 return TRUE;
6607
951fd09b 6608 htab = ppc_hash_table (info);
411e1bfb
AM		 6609 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6610 {
6611 Elf_Internal_Sym *locsyms = NULL;
6612
6613 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6614 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6615 {
6616 Elf_Internal_Rela *relstart, *rel, *relend;
6617 int expecting_tls_get_addr;
6618
6619 /* Read the relocations. */
4ce794b7 6620 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6621 info->keep_memory);
411e1bfb
AM		 6622 if (relstart == NULL)
6623 return FALSE;
6624
6625 expecting_tls_get_addr = 0;
6626 relend = relstart + sec->reloc_count;
6627 for (rel = relstart; rel < relend; rel++)
6628 {
6629 enum elf_ppc64_reloc_type r_type;
6630 unsigned long r_symndx;
6631 struct elf_link_hash_entry *h;
6632 Elf_Internal_Sym *sym;
6633 asection *sym_sec;
e7b938ca
AM		 6634 char *tls_mask;
6635 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6636 bfd_vma value;
951fd09b 6637 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6638
6639 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6640 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6641 r_symndx, ibfd))
6642 {
6643 err_free_rel:
6644 if (elf_section_data (sec)->relocs != relstart)
6645 free (relstart);
6646 if (locsyms != NULL
6647 && (elf_tdata (ibfd)->symtab_hdr.contents
6648 != (unsigned char *) locsyms))
6649 free (locsyms);
6650 return FALSE;
6651 }
6652
6653 if (h != NULL)
6654 {
6655 if (h->root.type != bfd_link_hash_defined
6656 && h->root.type != bfd_link_hash_defweak)
6657 continue;
6658 value = h->root.u.def.value;
6659 }
6660 else
4025353c
AM		 6661 /* Symbols referenced by TLS relocs must be of type
6662 STT_TLS. So no need for .opd local sym adjust. */
6663 value = sym->st_value;
951fd09b 6664
411e1bfb 6665 ok_tprel = FALSE;
951fd09b
AM		 6666 is_local = FALSE;
6667 if (h == NULL
f5385ebf 6668 || !h->def_dynamic)
411e1bfb 6669 {
951fd09b 6670 is_local = TRUE;
411e1bfb
AM		 6671 value += sym_sec->output_offset;
6672 value += sym_sec->output_section->vma;
e1918d23 6673 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6674 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6675 < (bfd_vma) 1 << 32);
6676 }
6677
4ce794b7 6678 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6679 switch (r_type)
6680 {
6681 case R_PPC64_GOT_TLSLD16:
6682 case R_PPC64_GOT_TLSLD16_LO:
6683 case R_PPC64_GOT_TLSLD16_HI:
6684 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6685 /* These relocs should never be against a symbol
6686 defined in a shared lib. Leave them alone if
6687 that turns out to be the case. */
e717da7e 6688 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6689 if (!is_local)
6690 continue;
6691
951fd09b
AM		 6692 /* LD -> LE */
6693 tls_set = 0;
6694 tls_clear = TLS_LD;
e7b938ca 6695 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6696 expecting_tls_get_addr = 1;
6697 break;
6698
6699 case R_PPC64_GOT_TLSGD16:
6700 case R_PPC64_GOT_TLSGD16_LO:
6701 case R_PPC64_GOT_TLSGD16_HI:
6702 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6703 if (ok_tprel)
411e1bfb
AM		 6704 /* GD -> LE */
6705 tls_set = 0;
6706 else
6707 /* GD -> IE */
951fd09b
AM		 6708 tls_set = TLS_TLS | TLS_TPRELGD;
6709 tls_clear = TLS_GD;
e7b938ca 6710 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6711 expecting_tls_get_addr = 1;
6712 break;
6713
6714 case R_PPC64_GOT_TPREL16_DS:
6715 case R_PPC64_GOT_TPREL16_LO_DS:
6716 case R_PPC64_GOT_TPREL16_HI:
6717 case R_PPC64_GOT_TPREL16_HA:
6718 expecting_tls_get_addr = 0;
6719 if (ok_tprel)
6720 {
6721 /* IE -> LE */
6722 tls_set = 0;
6723 tls_clear = TLS_TPREL;
e7b938ca 6724 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6725 break;
6726 }
6727 else
6728 continue;
6729
6730 case R_PPC64_REL14:
6731 case R_PPC64_REL14_BRTAKEN:
6732 case R_PPC64_REL14_BRNTAKEN:
6733 case R_PPC64_REL24:
6734 if (h != NULL
8387904d
AM		 6735 && (h == &htab->tls_get_addr->elf
6736 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6737 {
6738 if (!expecting_tls_get_addr
6739 && rel != relstart
6740 && ((ELF64_R_TYPE (rel[-1].r_info)
6741 == R_PPC64_TOC16)
6742 || (ELF64_R_TYPE (rel[-1].r_info)
6743 == R_PPC64_TOC16_LO)))
6744 {
6745 /* Check for toc tls entries. */
6746 char *toc_tls;
951fd09b 6747 int retval;
411e1bfb 6748
0d4792f7 6749 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6750 rel - 1, ibfd);
6751 if (retval == 0)
411e1bfb
AM		 6752 goto err_free_rel;
6753 if (toc_tls != NULL)
951fd09b 6754 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6755 }
6756
6757 if (expecting_tls_get_addr)
6758 {
6759 struct plt_entry *ent;
6760 for (ent = h->plt.plist; ent; ent = ent->next)
6761 if (ent->addend == 0)
6762 {
6763 if (ent->plt.refcount > 0)
6764 ent->plt.refcount -= 1;
6765 break;
6766 }
6767 }
6768 }
6769 expecting_tls_get_addr = 0;
6770 continue;
6771
6772 case R_PPC64_TPREL64:
6773 expecting_tls_get_addr = 0;
6774 if (ok_tprel)
6775 {
6776 /* IE -> LE */
6777 tls_set = TLS_EXPLICIT;
6778 tls_clear = TLS_TPREL;
6779 break;
6780 }
6781 else
6782 continue;
6783
6784 case R_PPC64_DTPMOD64:
6785 expecting_tls_get_addr = 0;
951fd09b
AM		 6786 if (rel + 1 < relend
6787 && (rel[1].r_info
6788 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6789 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6790 {
951fd09b 6791 if (ok_tprel)
411e1bfb 6792 /* GD -> LE */
951fd09b 6793 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6794 else
6795 /* GD -> IE */
951fd09b
AM		 6796 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6797 tls_clear = TLS_GD;
411e1bfb
AM		 6798 }
6799 else
6800 {
951fd09b
AM		 6801 if (!is_local)
6802 continue;
6803
6804 /* LD -> LE */
6805 tls_set = TLS_EXPLICIT;
6806 tls_clear = TLS_LD;
411e1bfb
AM		 6807 }
6808 break;
6809
6810 default:
6811 expecting_tls_get_addr = 0;
6812 continue;
6813 }
6814
6815 if ((tls_set & TLS_EXPLICIT) == 0)
6816 {
6817 struct got_entry *ent;
6818
6819 /* Adjust got entry for this reloc. */
6820 if (h != NULL)
6821 ent = h->got.glist;
6822 else
6823 ent = elf_local_got_ents (ibfd)[r_symndx];
6824
6825 for (; ent != NULL; ent = ent->next)
6826 if (ent->addend == rel->r_addend
e717da7e 6827 && ent->owner == ibfd
e7b938ca 6828 && ent->tls_type == tls_type)
411e1bfb
AM		 6829 break;
6830 if (ent == NULL)
6831 abort ();
6832
6833 if (tls_set == 0)
6834 {
6835 /* We managed to get rid of a got entry. */
6836 if (ent->got.refcount > 0)
6837 ent->got.refcount -= 1;
6838 }
411e1bfb 6839 }
8c1d1bb8 6840 else
411e1bfb 6841 {
8c1d1bb8
AM		 6842 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6843 we'll lose one or two dyn relocs. */
6844 if (!dec_dynrel_count (rel->r_info, sec, info,
6845 NULL, h, sym_sec))
6846 return FALSE;
6847
6848 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6849 {
6850 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6851 NULL, h, sym_sec))
6852 return FALSE;
6853 }
411e1bfb
AM		 6854 }
6855
e7b938ca
AM		 6856 *tls_mask |= tls_set;
6857 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6858 }
6859
6860 if (elf_section_data (sec)->relocs != relstart)
6861 free (relstart);
6862 }
6863
6864 if (locsyms != NULL
6865 && (elf_tdata (ibfd)->symtab_hdr.contents
6866 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6867 {
6868 if (!info->keep_memory)
411e1bfb 6869 free (locsyms);
6cdc0ccc 6870 else
411e1bfb 6871 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6872 }
1e2f5b6e 6873 }
b34976b6 6874 return TRUE;
1e2f5b6e 6875}
b34976b6 6876
c5614fa4
AM		 6877/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6878 the values of any global symbols in a toc section that has been
6879 edited. Globals in toc sections should be a rarity, so this function
6880 sets a flag if any are found in toc sections other than the one just
6881 edited, so that futher hash table traversals can be avoided. */
6882
6883struct adjust_toc_info
6884{
6885 asection *toc;
6886 unsigned long *skip;
6887 bfd_boolean global_toc_syms;
6888};
6889
6890static bfd_boolean
6891adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6892{
6893 struct ppc_link_hash_entry *eh;
6894 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6895
6896 if (h->root.type == bfd_link_hash_indirect)
6897 return TRUE;
6898
6899 if (h->root.type == bfd_link_hash_warning)
6900 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6901
6902 if (h->root.type != bfd_link_hash_defined
6903 && h->root.type != bfd_link_hash_defweak)
6904 return TRUE;
6905
6906 eh = (struct ppc_link_hash_entry *) h;
6907 if (eh->adjust_done)
6908 return TRUE;
6909
6910 if (eh->elf.root.u.def.section == toc_inf->toc)
6911 {
6912 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6913 if (skip != (unsigned long) -1)
6914 eh->elf.root.u.def.value -= skip;
6915 else
6916 {
6917 (*_bfd_error_handler)
6918 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6919 eh->elf.root.u.def.section = &bfd_abs_section;
6920 eh->elf.root.u.def.value = 0;
6921 }
6922 eh->adjust_done = 1;
6923 }
6924 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6925 toc_inf->global_toc_syms = TRUE;
6926
6927 return TRUE;
6928}
6929
6930/* Examine all relocs referencing .toc sections in order to remove
6931 unused .toc entries. */
6932
6933bfd_boolean
6934ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6935{
6936 bfd *ibfd;
6937 struct adjust_toc_info toc_inf;
6938
6939 toc_inf.global_toc_syms = TRUE;
6940 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6941 {
6942 asection *toc, *sec;
6943 Elf_Internal_Shdr *symtab_hdr;
6944 Elf_Internal_Sym *local_syms;
6945 struct elf_link_hash_entry **sym_hashes;
92b7a70f 6946 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 6947 unsigned long *skip, *drop;
6948 unsigned char *used;
6949 unsigned char *keep, last, some_unused;
6950
6951 toc = bfd_get_section_by_name (ibfd, ".toc");
6952 if (toc == NULL
92b7a70f 6953 || toc->size == 0
c5614fa4
AM		 6954 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6955 || elf_discarded_section (toc))
6956 continue;
6957
6958 local_syms = NULL;
6959 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6960 sym_hashes = elf_sym_hashes (ibfd);
6961
6962 /* Look at sections dropped from the final link. */
6963 skip = NULL;
6964 relstart = NULL;
6965 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6966 {
6967 if (sec->reloc_count == 0
6968 || !elf_discarded_section (sec)
6969 || get_opd_info (sec)
6970 || (sec->flags & SEC_ALLOC) == 0
6971 || (sec->flags & SEC_DEBUGGING) != 0)
6972 continue;
6973
6974 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6975 if (relstart == NULL)
6976 goto error_ret;
6977
6978 /* Run through the relocs to see which toc entries might be
6979 unused. */
6980 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6981 {
6982 enum elf_ppc64_reloc_type r_type;
6983 unsigned long r_symndx;
6984 asection *sym_sec;
6985 struct elf_link_hash_entry *h;
6986 Elf_Internal_Sym *sym;
6987 bfd_vma val;
6988
6989 r_type = ELF64_R_TYPE (rel->r_info);
6990 switch (r_type)
6991 {
6992 default:
6993 continue;
6994
6995 case R_PPC64_TOC16:
6996 case R_PPC64_TOC16_LO:
6997 case R_PPC64_TOC16_HI:
6998 case R_PPC64_TOC16_HA:
6999 case R_PPC64_TOC16_DS:
7000 case R_PPC64_TOC16_LO_DS:
7001 break;
7002 }
7003
7004 r_symndx = ELF64_R_SYM (rel->r_info);
7005 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7006 r_symndx, ibfd))
7007 goto error_ret;
7008
7009 if (sym_sec != toc)
7010 continue;
7011
7012 if (h != NULL)
7013 val = h->root.u.def.value;
7014 else
7015 val = sym->st_value;
7016 val += rel->r_addend;
7017
7018 if (val >= toc->size)
7019 continue;
7020
7021 /* Anything in the toc ought to be aligned to 8 bytes.
7022 If not, don't mark as unused. */
7023 if (val & 7)
7024 continue;
7025
7026 if (skip == NULL)
7027 {
7028 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7029 if (skip == NULL)
7030 goto error_ret;
7031 }
7032
7033 skip[val >> 3] = 1;
7034 }
7035
7036 if (elf_section_data (sec)->relocs != relstart)
7037 free (relstart);
7038 }
7039
7040 if (skip == NULL)
7041 continue;
7042
7043 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7044 if (used == NULL)
7045 {
7046 error_ret:
7047 if (local_syms != NULL
7048 && symtab_hdr->contents != (unsigned char *) local_syms)
7049 free (local_syms);
7050 if (sec != NULL
7051 && relstart != NULL
7052 && elf_section_data (sec)->relocs != relstart)
7053 free (relstart);
7054 if (skip != NULL)
7055 free (skip);
7056 return FALSE;
7057 }
7058
7059 /* Now check all kept sections that might reference the toc. */
7060 for (sec = ibfd->sections;
7061 sec != NULL;
7062 /* Check the toc itself last. */
7063 sec = (sec == toc ? NULL
7064 : sec->next == toc && sec->next->next ? sec->next->next
7065 : sec->next == NULL ? toc
7066 : sec->next))
7067 {
7068 int repeat;
7069
7070 if (sec->reloc_count == 0
7071 || elf_discarded_section (sec)
7072 || get_opd_info (sec)
7073 || (sec->flags & SEC_ALLOC) == 0
7074 || (sec->flags & SEC_DEBUGGING) != 0)
7075 continue;
7076
7077 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7078 if (relstart == NULL)
7079 goto error_ret;
7080
7081 /* Mark toc entries referenced as used. */
7082 repeat = 0;
7083 do
7084 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7085 {
7086 enum elf_ppc64_reloc_type r_type;
7087 unsigned long r_symndx;
7088 asection *sym_sec;
7089 struct elf_link_hash_entry *h;
7090 Elf_Internal_Sym *sym;
7091 bfd_vma val;
7092
7093 r_type = ELF64_R_TYPE (rel->r_info);
7094 switch (r_type)
7095 {
7096 case R_PPC64_TOC16:
7097 case R_PPC64_TOC16_LO:
7098 case R_PPC64_TOC16_HI:
7099 case R_PPC64_TOC16_HA:
7100 case R_PPC64_TOC16_DS:
7101 case R_PPC64_TOC16_LO_DS:
7102 /* In case we're taking addresses of toc entries. */
7103 case R_PPC64_ADDR64:
7104 break;
7105
7106 default:
7107 continue;
7108 }
7109
7110 r_symndx = ELF64_R_SYM (rel->r_info);
7111 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7112 r_symndx, ibfd))
7113 {
7114 free (used);
7115 goto error_ret;
7116 }
7117
7118 if (sym_sec != toc)
7119 continue;
7120
7121 if (h != NULL)
7122 val = h->root.u.def.value;
7123 else
7124 val = sym->st_value;
7125 val += rel->r_addend;
7126
7127 if (val >= toc->size)
7128 continue;
7129
7130 /* For the toc section, we only mark as used if
7131 this entry itself isn't unused. */
7132 if (sec == toc
7133 && !used[val >> 3]
7134 && (used[rel->r_offset >> 3]
7135 || !skip[rel->r_offset >> 3]))
7136 /* Do all the relocs again, to catch reference
7137 chains. */
7138 repeat = 1;
7139
7140 used[val >> 3] = 1;
7141 }
7142 while (repeat);
7143 }
7144
7145 /* Merge the used and skip arrays. Assume that TOC
7146 doublewords not appearing as either used or unused belong
7147 to to an entry more than one doubleword in size. */
7148 for (drop = skip, keep = used, last = 0, some_unused = 0;
7149 drop < skip + (toc->size + 7) / 8;
7150 ++drop, ++keep)
7151 {
7152 if (*keep)
7153 {
7154 *drop = 0;
7155 last = 0;
7156 }
7157 else if (*drop)
7158 {
7159 some_unused = 1;
7160 last = 1;
7161 }
7162 else
7163 *drop = last;
7164 }
7165
7166 free (used);
7167
7168 if (some_unused)
7169 {
7170 bfd_byte *contents, *src;
7171 unsigned long off;
7172
7173 /* Shuffle the toc contents, and at the same time convert the
7174 skip array from booleans into offsets. */
7175 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7176 goto error_ret;
7177
7178 elf_section_data (toc)->this_hdr.contents = contents;
7179
7180 for (src = contents, off = 0, drop = skip;
7181 src < contents + toc->size;
7182 src += 8, ++drop)
7183 {
7184 if (*drop)
7185 {
7186 *drop = (unsigned long) -1;
7187 off += 8;
7188 }
7189 else if (off != 0)
7190 {
7191 *drop = off;
7192 memcpy (src - off, src, 8);
7193 }
7194 }
7195 toc->rawsize = toc->size;
7196 toc->size = src - contents - off;
7197
92b7a70f
AM		 7198 if (toc->reloc_count != 0)
7199 {
7200 Elf_Internal_Rela *wrel;
7201 bfd_size_type sz;
c5614fa4 7202
92b7a70f
AM		 7203 /* Read toc relocs. */
7204 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7205 TRUE);
7206 if (relstart == NULL)
7207 goto error_ret;
7208
7209 /* Remove unused toc relocs, and adjust those we keep. */
7210 wrel = relstart;
7211 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7212 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7213 {
7214 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7215 wrel->r_info = rel->r_info;
7216 wrel->r_addend = rel->r_addend;
7217 ++wrel;
7218 }
8c1d1bb8
AM		 7219 else if (!dec_dynrel_count (rel->r_info, toc, info,
7220 &local_syms, NULL, NULL))
7221 goto error_ret;
35090471 7222
92b7a70f
AM		 7223 toc->reloc_count = wrel - relstart;
7224 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7225 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7226 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7227 }
c5614fa4
AM		 7228
7229 /* Adjust addends for relocs against the toc section sym. */
7230 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7231 {
7232 if (sec->reloc_count == 0
7233 || elf_discarded_section (sec))
7234 continue;
7235
7236 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7237 TRUE);
7238 if (relstart == NULL)
7239 goto error_ret;
7240
7241 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7242 {
7243 enum elf_ppc64_reloc_type r_type;
7244 unsigned long r_symndx;
7245 asection *sym_sec;
7246 struct elf_link_hash_entry *h;
7247 Elf_Internal_Sym *sym;
7248
7249 r_type = ELF64_R_TYPE (rel->r_info);
7250 switch (r_type)
7251 {
7252 default:
7253 continue;
7254
7255 case R_PPC64_TOC16:
7256 case R_PPC64_TOC16_LO:
7257 case R_PPC64_TOC16_HI:
7258 case R_PPC64_TOC16_HA:
7259 case R_PPC64_TOC16_DS:
7260 case R_PPC64_TOC16_LO_DS:
7261 case R_PPC64_ADDR64:
7262 break;
7263 }
7264
7265 r_symndx = ELF64_R_SYM (rel->r_info);
7266 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7267 r_symndx, ibfd))
7268 goto error_ret;
7269
7270 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7271 continue;
7272
7273 rel->r_addend -= skip[rel->r_addend >> 3];
7274 }
7275 }
7276
7277 /* We shouldn't have local or global symbols defined in the TOC,
7278 but handle them anyway. */
7279 if (local_syms != NULL)
7280 {
7281 Elf_Internal_Sym *sym;
7282
7283 for (sym = local_syms;
7284 sym < local_syms + symtab_hdr->sh_info;
7285 ++sym)
7286 if (sym->st_shndx != SHN_UNDEF
7287 && (sym->st_shndx < SHN_LORESERVE
7288 || sym->st_shndx > SHN_HIRESERVE)
7289 && sym->st_value != 0
7290 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7291 {
7292 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7293 sym->st_value -= skip[sym->st_value >> 3];
7294 else
7295 {
7296 (*_bfd_error_handler)
7297 (_("%s defined in removed toc entry"),
26c61ae5
L		 7298 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7299 NULL));
c5614fa4
AM		 7300 sym->st_value = 0;
7301 sym->st_shndx = SHN_ABS;
7302 }
7303 symtab_hdr->contents = (unsigned char *) local_syms;
7304 }
7305 }
7306
7307 /* Finally, adjust any global syms defined in the toc. */
7308 if (toc_inf.global_toc_syms)
7309 {
7310 toc_inf.toc = toc;
7311 toc_inf.skip = skip;
7312 toc_inf.global_toc_syms = FALSE;
7313 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7314 &toc_inf);
7315 }
7316 }
7317
7318 if (local_syms != NULL
7319 && symtab_hdr->contents != (unsigned char *) local_syms)
7320 {
7321 if (!info->keep_memory)
7322 free (local_syms);
7323 else
7324 symtab_hdr->contents = (unsigned char *) local_syms;
7325 }
7326 free (skip);
7327 }
7328
7329 return TRUE;
7330}
7331
65f38f15
AM		 7332/* Allocate space in .plt, .got and associated reloc sections for
7333 dynamic relocs. */
5bd4f169 7334
b34976b6 7335static bfd_boolean
4ce794b7 7336allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7337{
65f38f15
AM		 7338 struct bfd_link_info *info;
7339 struct ppc_link_hash_table *htab;
5bd4f169 7340 asection *s;
65f38f15
AM		 7341 struct ppc_link_hash_entry *eh;
7342 struct ppc_dyn_relocs *p;
411e1bfb 7343 struct got_entry *gent;
5bd4f169 7344
e92d460e 7345 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7346 return TRUE;
5bd4f169 7347
e92d460e
AM		 7348 if (h->root.type == bfd_link_hash_warning)
7349 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7350
65f38f15
AM		 7351 info = (struct bfd_link_info *) inf;
7352 htab = ppc_hash_table (info);
5bd4f169 7353
65f38f15 7354 if (htab->elf.dynamic_sections_created
411e1bfb 7355 && h->dynindx != -1
9c7a29a3 7356 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7357 {
411e1bfb
AM		 7358 struct plt_entry *pent;
7359 bfd_boolean doneone = FALSE;
7360 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7361 if (pent->plt.refcount > 0)
7362 {
411e1bfb
AM		 7363 /* If this is the first .plt entry, make room for the special
7364 first entry. */
4ce794b7 7365 s = htab->plt;
eea6121a
AM		 7366 if (s->size == 0)
7367 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7368
eea6121a 7369 pent->plt.offset = s->size;
411e1bfb
AM		 7370
7371 /* Make room for this entry. */
eea6121a 7372 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7373
7374 /* Make room for the .glink code. */
4ce794b7 7375 s = htab->glink;
eea6121a
AM		 7376 if (s->size == 0)
7377 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7378 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7379 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7380 s->size += 4;
7381 s->size += 2*4;
411e1bfb
AM		 7382
7383 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7384 s = htab->relplt;
eea6121a 7385 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7386 doneone = TRUE;
7387 }
7388 else
7389 pent->plt.offset = (bfd_vma) -1;
7390 if (!doneone)
65f38f15 7391 {
411e1bfb 7392 h->plt.plist = NULL;
f5385ebf 7393 h->needs_plt = 0;
65f38f15
AM		 7394 }
7395 }
7396 else
7397 {
411e1bfb 7398 h->plt.plist = NULL;
f5385ebf 7399 h->needs_plt = 0;
65f38f15
AM		 7400 }
7401
951fd09b
AM		 7402 eh = (struct ppc_link_hash_entry *) h;
7403 /* Run through the TLS GD got entries first if we're changing them
7404 to TPREL. */
e7b938ca 7405 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7406 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7407 if (gent->got.refcount > 0
7408 && (gent->tls_type & TLS_GD) != 0)
7409 {
7410 /* This was a GD entry that has been converted to TPREL. If
7411 there happens to be a TPREL entry we can use that one. */
7412 struct got_entry *ent;
7413 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7414 if (ent->got.refcount > 0
7415 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7416 && ent->addend == gent->addend
7417 && ent->owner == gent->owner)
951fd09b
AM		 7418 {
7419 gent->got.refcount = 0;
7420 break;
7421 }
7422
7423 /* If not, then we'll be using our own TPREL entry. */
7424 if (gent->got.refcount != 0)
7425 gent->tls_type = TLS_TLS | TLS_TPREL;
7426 }
7427
411e1bfb
AM		 7428 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7429 if (gent->got.refcount > 0)
7430 {
951fd09b
AM		 7431 bfd_boolean dyn;
7432
411e1bfb 7433 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7434 Undefined weak syms won't yet be marked as dynamic,
7435 nor will all TLS symbols. */
411e1bfb 7436 if (h->dynindx == -1
f5385ebf 7437 && !h->forced_local)
411e1bfb 7438 {
c152c796 7439 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7440 return FALSE;
7441 }
65f38f15 7442
d881513a 7443 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7444 && !h->def_dynamic)
411e1bfb 7445 {
e717da7e 7446 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7447 continue;
411e1bfb 7448 }
951fd09b 7449
e717da7e 7450 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7451 gent->got.offset = s->size;
7452 s->size
d881513a 7453 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7454 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7455 if ((info->shared
7456 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7457 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7458 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7459 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7460 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7461 ? 2 * sizeof (Elf64_External_Rela)
7462 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7463 }
7464 else
7465 gent->got.offset = (bfd_vma) -1;
65f38f15 7466
65f38f15 7467 if (eh->dyn_relocs == NULL)
b34976b6 7468 return TRUE;
65f38f15
AM		 7469
7470 /* In the shared -Bsymbolic case, discard space allocated for
7471 dynamic pc-relative relocs against symbols which turn out to be
7472 defined in regular objects. For the normal shared case, discard
7473 space for relocs that have become local due to symbol visibility
7474 changes. */
7475
7476 if (info->shared)
7477 {
9c7a29a3
AM		 7478 /* Relocs that use pc_count are those that appear on a call insn,
7479 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7480 generated via assembly. We want calls to protected symbols to
7481 resolve directly to the function rather than going via the plt.
7482 If people want function pointer comparisons to work as expected
7483 then they should avoid writing weird assembly. */
09695f56 7484 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7485 {
7486 struct ppc_dyn_relocs **pp;
7487
7488 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7489 {
65f38f15
AM		 7490 p->count -= p->pc_count;
7491 p->pc_count = 0;
7492 if (p->count == 0)
7493 *pp = p->next;
7494 else
7495 pp = &p->next;
5bd4f169 7496 }
65f38f15 7497 }
4e795f50
AM		 7498
7499 /* Also discard relocs on undefined weak syms with non-default
7500 visibility. */
7501 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7502 && h->root.type == bfd_link_hash_undefweak)
7503 eh->dyn_relocs = NULL;
65f38f15 7504 }
f4656909 7505 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7506 {
7507 /* For the non-shared case, discard space for relocs against
7508 symbols which turn out to need copy relocs or are not
7509 dynamic. */
7510
f5385ebf
AM		 7511 if (!h->non_got_ref
7512 && h->def_dynamic
7513 && !h->def_regular)
65f38f15
AM		 7514 {
7515 /* Make sure this symbol is output as a dynamic symbol.
7516 Undefined weak syms won't yet be marked as dynamic. */
7517 if (h->dynindx == -1
f5385ebf 7518 && !h->forced_local)
65f38f15 7519 {
c152c796 7520 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7521 return FALSE;
65f38f15
AM		 7522 }
7523
7524 /* If that succeeded, we know we'll be keeping all the
7525 relocs. */
7526 if (h->dynindx != -1)
7527 goto keep;
7528 }
7529
7530 eh->dyn_relocs = NULL;
7531
ec338859 7532 keep: ;
65f38f15
AM		 7533 }
7534
7535 /* Finally, allocate space. */
7536 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7537 {
7538 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7539 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7540 }
7541
b34976b6 7542 return TRUE;
65f38f15
AM		 7543}
7544
7545/* Find any dynamic relocs that apply to read-only sections. */
7546
b34976b6 7547static bfd_boolean
4ce794b7 7548readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7549{
7550 struct ppc_link_hash_entry *eh;
7551 struct ppc_dyn_relocs *p;
7552
e92d460e
AM		 7553 if (h->root.type == bfd_link_hash_warning)
7554 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7555
65f38f15
AM		 7556 eh = (struct ppc_link_hash_entry *) h;
7557 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7558 {
7559 asection *s = p->sec->output_section;
7560
7561 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7562 {
4ce794b7 7563 struct bfd_link_info *info = inf;
65f38f15
AM		 7564
7565 info->flags |= DF_TEXTREL;
7566
7567 /* Not an error, just cut short the traversal. */
b34976b6 7568 return FALSE;
65f38f15
AM		 7569 }
7570 }
b34976b6 7571 return TRUE;
65f38f15
AM		 7572}
7573
7574/* Set the sizes of the dynamic sections. */
7575
b34976b6 7576static bfd_boolean
4ce794b7
AM		 7577ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7578 struct bfd_link_info *info)
65f38f15
AM		 7579{
7580 struct ppc_link_hash_table *htab;
7581 bfd *dynobj;
7582 asection *s;
b34976b6 7583 bfd_boolean relocs;
65f38f15
AM		 7584 bfd *ibfd;
7585
7586 htab = ppc_hash_table (info);
7587 dynobj = htab->elf.dynobj;
7588 if (dynobj == NULL)
7589 abort ();
7590
7591 if (htab->elf.dynamic_sections_created)
7592 {
7593 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7594 if (info->executable)
65f38f15
AM		 7595 {
7596 s = bfd_get_section_by_name (dynobj, ".interp");
7597 if (s == NULL)
7598 abort ();
eea6121a 7599 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7600 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7601 }
7602 }
7603
7604 /* Set up .got offsets for local syms, and space for local dynamic
7605 relocs. */
7606 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7607 {
411e1bfb
AM		 7608 struct got_entry **lgot_ents;
7609 struct got_entry **end_lgot_ents;
e7b938ca 7610 char *lgot_masks;
65f38f15
AM		 7611 bfd_size_type locsymcount;
7612 Elf_Internal_Shdr *symtab_hdr;
7613 asection *srel;
7614
ee75fd95 7615 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7616 continue;
7617
e717da7e
AM		 7618 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7619 {
7620 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7621 ppc64_tlsld_got (ibfd)->offset = s->size;
7622 s->size += 16;
e717da7e
AM		 7623 if (info->shared)
7624 {
7625 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7626 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7627 }
7628 }
7629 else
7630 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7631
65f38f15
AM		 7632 for (s = ibfd->sections; s != NULL; s = s->next)
7633 {
ec338859 7634 struct ppc_dyn_relocs *p;
65f38f15 7635
ec338859
AM		 7636 for (p = *((struct ppc_dyn_relocs **)
7637 &elf_section_data (s)->local_dynrel);
7638 p != NULL;
7639 p = p->next)
65f38f15 7640 {
ec338859
AM		 7641 if (!bfd_is_abs_section (p->sec)
7642 && bfd_is_abs_section (p->sec->output_section))
7643 {
7644 /* Input section has been discarded, either because
7645 it is a copy of a linkonce section or due to
7646 linker script /DISCARD/, so we'll be discarding
7647 the relocs too. */
7648 }
248866a8 7649 else if (p->count != 0)
ec338859
AM		 7650 {
7651 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7652 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7653 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7654 info->flags |= DF_TEXTREL;
ec338859 7655 }
65f38f15
AM		 7656 }
7657 }
7658
411e1bfb
AM		 7659 lgot_ents = elf_local_got_ents (ibfd);
7660 if (!lgot_ents)
65f38f15
AM		 7661 continue;
7662
7663 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7664 locsymcount = symtab_hdr->sh_info;
411e1bfb 7665 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7666 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7667 s = ppc64_elf_tdata (ibfd)->got;
7668 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7669 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7670 {
411e1bfb
AM		 7671 struct got_entry *ent;
7672
7673 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7674 if (ent->got.refcount > 0)
7675 {
e7b938ca 7676 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7677 {
e717da7e 7678 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7679 {
eea6121a
AM		 7680 ppc64_tlsld_got (ibfd)->offset = s->size;
7681 s->size += 16;
411e1bfb 7682 if (info->shared)
eea6121a 7683 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7684 }
e717da7e 7685 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7686 }
7687 else
7688 {
eea6121a 7689 ent->got.offset = s->size;
e7b938ca 7690 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7691 {
eea6121a 7692 s->size += 16;
411e1bfb 7693 if (info->shared)
eea6121a 7694 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7695 }
7696 else
7697 {
eea6121a 7698 s->size += 8;
411e1bfb 7699 if (info->shared)
eea6121a 7700 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7701 }
7702 }
7703 }
7704 else
7705 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7706 }
7707 }
7708
7709 /* Allocate global sym .plt and .got entries, and space for global
7710 sym dynamic relocs. */
4ce794b7 7711 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7712
7713 /* We now have determined the sizes of the various dynamic sections.
7714 Allocate memory for them. */
b34976b6 7715 relocs = FALSE;
65f38f15
AM		 7716 for (s = dynobj->sections; s != NULL; s = s->next)
7717 {
7718 if ((s->flags & SEC_LINKER_CREATED) == 0)
7719 continue;
7720
4ce794b7 7721 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7722 /* These haven't been allocated yet; don't strip. */
7723 continue;
e717da7e
AM		 7724 else if (s == htab->got
7725 || s == htab->plt
4ce794b7 7726 || s == htab->glink)
65f38f15
AM		 7727 {
7728 /* Strip this section if we don't need it; see the
7729 comment below. */
5bd4f169 7730 }
65f38f15 7731 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7732 {
eea6121a 7733 if (s->size == 0)
5bd4f169
AM		 7734 {
7735 /* If we don't need this section, strip it from the
7736 output file. This is mostly to handle .rela.bss and
7737 .rela.plt. We must create both sections in
7738 create_dynamic_sections, because they must be created
7739 before the linker maps input sections to output
7740 sections. The linker does that before
7741 adjust_dynamic_symbol is called, and it is that
7742 function which decides whether anything needs to go
7743 into these sections. */
5bd4f169
AM		 7744 }
7745 else
7746 {
4ce794b7 7747 if (s != htab->relplt)
b34976b6 7748 relocs = TRUE;
5bd4f169
AM		 7749
7750 /* We use the reloc_count field as a counter if we need
7751 to copy relocs into the output file. */
7752 s->reloc_count = 0;
7753 }
7754 }
65f38f15 7755 else
5bd4f169
AM		 7756 {
7757 /* It's not one of our sections, so don't allocate space. */
7758 continue;
7759 }
7760
eea6121a 7761 if (s->size == 0)
5bd4f169 7762 {
8423293d 7763 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 7764 continue;
7765 }
7766
5f333394 7767 /* .plt is in the bss section. We don't initialise it. */
680a3378 7768 if (s == htab->plt)
5f333394
AM		 7769 continue;
7770
65f38f15
AM		 7771 /* Allocate memory for the section contents. We use bfd_zalloc
7772 here in case unused entries are not reclaimed before the
7773 section's contents are written out. This should not happen,
411e1bfb
AM		 7774 but this way if it does we get a R_PPC64_NONE reloc in .rela
7775 sections instead of garbage.
7776 We also rely on the section contents being zero when writing
7777 the GOT. */
eea6121a 7778 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7779 if (s->contents == NULL)
b34976b6 7780 return FALSE;
5bd4f169
AM		 7781 }
7782
e717da7e
AM		 7783 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7784 {
ee75fd95 7785 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7786 continue;
7787
e717da7e
AM		 7788 s = ppc64_elf_tdata (ibfd)->got;
7789 if (s != NULL && s != htab->got)
7790 {
eea6121a 7791 if (s->size == 0)
8423293d 7792 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7793 else
7794 {
eea6121a 7795 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7796 if (s->contents == NULL)
7797 return FALSE;
7798 }
7799 }
7800 s = ppc64_elf_tdata (ibfd)->relgot;
7801 if (s != NULL)
7802 {
eea6121a 7803 if (s->size == 0)
8423293d 7804 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7805 else
7806 {
eea6121a 7807 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7808 if (s->contents == NULL)
7809 return FALSE;
7810 relocs = TRUE;
7811 s->reloc_count = 0;
7812 }
7813 }
7814 }
7815
e86ce104 7816 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7817 {
7818 /* Add some entries to the .dynamic section. We fill in the
7819 values later, in ppc64_elf_finish_dynamic_sections, but we
7820 must add the entries now so that we get the correct size for
7821 the .dynamic section. The DT_DEBUG entry is filled in by the
7822 dynamic linker and used by the debugger. */
dc810e39 7823#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7824 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7825
36af4a4e 7826 if (info->executable)
5bd4f169 7827 {
dc810e39 7828 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7829 return FALSE;
5bd4f169
AM		 7830 }
7831
eea6121a 7832 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7833 {
dc810e39
AM		 7834 if (!add_dynamic_entry (DT_PLTGOT, 0)
7835 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7836 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7837 || !add_dynamic_entry (DT_JMPREL, 0)
7838 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7839 return FALSE;
5bd4f169
AM		 7840 }
7841
19397422
AM		 7842 if (NO_OPD_RELOCS)
7843 {
7844 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7845 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7846 return FALSE;
19397422
AM		 7847 }
7848
5bd4f169
AM		 7849 if (relocs)
7850 {
dc810e39
AM		 7851 if (!add_dynamic_entry (DT_RELA, 0)
7852 || !add_dynamic_entry (DT_RELASZ, 0)
7853 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7854 return FALSE;
5bd4f169 7855
65f38f15
AM		 7856 /* If any dynamic relocs apply to a read-only section,
7857 then we need a DT_TEXTREL entry. */
248866a8 7858 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7859 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7860
65f38f15 7861 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7862 {
65f38f15 7863 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7864 return FALSE;
5bd4f169 7865 }
5bd4f169 7866 }
5bd4f169 7867 }
65f38f15 7868#undef add_dynamic_entry
5bd4f169 7869
b34976b6 7870 return TRUE;
5bd4f169
AM		 7871}
7872
721956f4 7873/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7874
4ce794b7
AM		 7875static inline enum ppc_stub_type
7876ppc_type_of_stub (asection *input_sec,
7877 const Elf_Internal_Rela *rel,
7878 struct ppc_link_hash_entry **hash,
7879 bfd_vma destination)
5bd4f169 7880{
721956f4
AM		 7881 struct ppc_link_hash_entry *h = *hash;
7882 bfd_vma location;
7883 bfd_vma branch_offset;
7884 bfd_vma max_branch_offset;
4ce794b7 7885 enum elf_ppc64_reloc_type r_type;
5bd4f169 7886
721956f4
AM		 7887 if (h != NULL)
7888 {
7889 if (h->oh != NULL
8387904d
AM		 7890 && h->oh->is_func_descriptor)
7891 h = h->oh;
7892
7893 if (h->elf.dynindx != -1)
5bd4f169 7894 {
411e1bfb 7895 struct plt_entry *ent;
8387904d
AM		 7896
7897 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7898 if (ent->addend == rel->r_addend
7899 && ent->plt.offset != (bfd_vma) -1)
7900 {
8387904d 7901 *hash = h;
411e1bfb
AM		 7902 return ppc_stub_plt_call;
7903 }
5bd4f169
AM		 7904 }
7905
ee7de3e6
AM		 7906 if (!(h->elf.root.type == bfd_link_hash_defined
7907 || h->elf.root.type == bfd_link_hash_defweak)
7908 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7909 return ppc_stub_none;
5d1634d7 7910 }
5d1634d7 7911
721956f4
AM		 7912 /* Determine where the call point is. */
7913 location = (input_sec->output_offset
7914 + input_sec->output_section->vma
7915 + rel->r_offset);
5d1634d7 7916
721956f4
AM		 7917 branch_offset = destination - location;
7918 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7919
721956f4
AM		 7920 /* Determine if a long branch stub is needed. */
7921 max_branch_offset = 1 << 25;
4ce794b7 7922 if (r_type != R_PPC64_REL24)
721956f4 7923 max_branch_offset = 1 << 15;
5d1634d7 7924
721956f4
AM		 7925 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7926 /* We need a stub. Figure out whether a long_branch or plt_branch
7927 is needed later. */
7928 return ppc_stub_long_branch;
5d1634d7 7929
721956f4 7930 return ppc_stub_none;
5d1634d7
AM		 7931}
7932
7933/* Build a .plt call stub. */
7934
4ce794b7
AM		 7935static inline bfd_byte *
7936build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7937{
7938#define PPC_LO(v) ((v) & 0xffff)
7939#define PPC_HI(v) (((v) >> 16) & 0xffff)
7940#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7941
5d1634d7 7942 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7943 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7944 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7945 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7946 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7947 offset += 8;
7948 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7949 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7950 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7951 offset += 8;
7952 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7953 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7954 bfd_put_32 (obfd, BCTR, p), p += 4;
7955 return p;
7956}
7957
b34976b6 7958static bfd_boolean
4ce794b7 7959ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7960{
721956f4
AM		 7961 struct ppc_stub_hash_entry *stub_entry;
7962 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7963 struct bfd_link_info *info;
7964 struct ppc_link_hash_table *htab;
721956f4
AM		 7965 bfd_byte *loc;
7966 bfd_byte *p;
7967 unsigned int indx;
411e1bfb 7968 struct plt_entry *ent;
ee75fd95 7969 bfd_vma dest, off;
721956f4 7970 int size;
5d1634d7 7971
721956f4
AM		 7972 /* Massage our args to the form they really have. */
7973 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7974 info = in_arg;
5d1634d7 7975
5d1634d7
AM		 7976 htab = ppc_hash_table (info);
7977
721956f4 7978 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7979 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7980 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7981
4ce794b7 7982 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7983 switch (stub_entry->stub_type)
5d1634d7 7984 {
721956f4 7985 case ppc_stub_long_branch:
ad8e1ba5 7986 case ppc_stub_long_branch_r2off:
721956f4 7987 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7988 off = dest = (stub_entry->target_value
7989 + stub_entry->target_section->output_offset
7990 + stub_entry->target_section->output_section->vma);
5d1634d7 7991
721956f4
AM		 7992 /* And this is where we are coming from. */
7993 off -= (stub_entry->stub_offset
97b639ba
AM		 7994 + stub_entry->stub_sec->output_offset
7995 + stub_entry->stub_sec->output_section->vma);
e86ce104 7996
ad8e1ba5
AM		 7997 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7998 size = 4;
7999 else
8000 {
8001 bfd_vma r2off;
8002
8003 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8004 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8005 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8006 loc += 4;
97b639ba 8007 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8008 loc += 4;
97b639ba 8009 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8010 loc += 4;
8011 off -= 12;
8012 size = 16;
8013 }
97b639ba 8014 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 8015
8016 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 8017
8018 if (info->emitrelocations)
8019 {
8020 Elf_Internal_Rela *relocs, *r;
8021 struct bfd_elf_section_data *elfsec_data;
8022
8023 elfsec_data = elf_section_data (stub_entry->stub_sec);
8024 relocs = elfsec_data->relocs;
8025 if (relocs == NULL)
8026 {
8027 bfd_size_type relsize;
8028 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8029 relocs = bfd_alloc (htab->stub_bfd, relsize);
8030 if (relocs == NULL)
8031 return FALSE;
8032 elfsec_data->relocs = relocs;
8033 elfsec_data->rel_hdr.sh_size = relsize;
8034 elfsec_data->rel_hdr.sh_entsize = 24;
8035 stub_entry->stub_sec->reloc_count = 0;
8036 }
8037 r = relocs + stub_entry->stub_sec->reloc_count;
8038 stub_entry->stub_sec->reloc_count += 1;
8039 r->r_offset = loc - stub_entry->stub_sec->contents;
8040 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8041 r->r_addend = dest;
8042 if (stub_entry->h != NULL)
8043 {
8044 struct elf_link_hash_entry **hashes;
8045 unsigned long symndx;
8046 struct ppc_link_hash_entry *h;
8047
8048 hashes = elf_sym_hashes (htab->stub_bfd);
8049 if (hashes == NULL)
8050 {
8051 bfd_size_type hsize;
8052
8053 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8054 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8055 if (hashes == NULL)
8056 return FALSE;
8057 elf_sym_hashes (htab->stub_bfd) = hashes;
8058 htab->stub_globals = 1;
8059 }
8060 symndx = htab->stub_globals++;
8061 h = stub_entry->h;
8062 hashes[symndx] = &h->elf;
8063 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8064 if (h->oh != NULL && h->oh->is_func)
8065 h = h->oh;
8066 if (h->elf.root.u.def.section != stub_entry->target_section)
8067 /* H is an opd symbol. The addend must be zero. */
8068 r->r_addend = 0;
8069 else
8070 {
8071 off = (h->elf.root.u.def.value
8072 + h->elf.root.u.def.section->output_offset
8073 + h->elf.root.u.def.section->output_section->vma);
8074 r->r_addend -= off;
8075 }
8076 }
8077 }
721956f4 8078 break;
e86ce104 8079
721956f4 8080 case ppc_stub_plt_branch:
ad8e1ba5 8081 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8082 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8083 stub_entry->root.string + 9,
b34976b6 8084 FALSE, FALSE);
721956f4
AM		 8085 if (br_entry == NULL)
8086 {
8087 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8088 stub_entry->root.string + 9);
b34976b6
AM		 8089 htab->stub_error = TRUE;
8090 return FALSE;
721956f4
AM		 8091 }
8092
8093 off = (stub_entry->target_value
8094 + stub_entry->target_section->output_offset
8095 + stub_entry->target_section->output_section->vma);
8096
4ce794b7
AM		 8097 bfd_put_64 (htab->brlt->owner, off,
8098 htab->brlt->contents + br_entry->offset);
721956f4 8099
ee75fd95 8100 if (htab->relbrlt != NULL)
721956f4
AM		 8101 {
8102 /* Create a reloc for the branch lookup table entry. */
8103 Elf_Internal_Rela rela;
ad8e1ba5 8104 bfd_byte *rl;
5d1634d7 8105
721956f4 8106 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8107 + htab->brlt->output_offset
8108 + htab->brlt->output_section->vma);
721956f4
AM		 8109 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8110 rela.r_addend = off;
8111
4ce794b7
AM		 8112 rl = htab->relbrlt->contents;
8113 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8114 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 8115 }
8116
8117 off = (br_entry->offset
4ce794b7
AM		 8118 + htab->brlt->output_offset
8119 + htab->brlt->output_section->vma
8120 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8121 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8122
ad8e1ba5 8123 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8124 {
8125 (*_bfd_error_handler)
e86ce104 8126 (_("linkage table error against `%s'"),
721956f4 8127 stub_entry->root.string);
5d1634d7 8128 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8129 htab->stub_error = TRUE;
8130 return FALSE;
5d1634d7 8131 }
41bd81ab 8132
721956f4 8133 indx = off;
ad8e1ba5
AM		 8134 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8135 {
97b639ba 8136 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8137 loc += 4;
97b639ba 8138 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 8139 size = 16;
8140 }
8141 else
8142 {
8143 bfd_vma r2off;
8144
8145 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8146 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8147 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8148 loc += 4;
97b639ba 8149 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8150 loc += 4;
97b639ba 8151 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8152 loc += 4;
97b639ba 8153 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8154 loc += 4;
97b639ba 8155 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8156 size = 28;
8157 }
8158 loc += 4;
97b639ba 8159 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8160 loc += 4;
97b639ba 8161 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8162 break;
5d1634d7 8163
721956f4 8164 case ppc_stub_plt_call:
c862ae31
AM		 8165 /* Do the best we can for shared libraries built without
8166 exporting ".foo" for each "foo". This can happen when symbol
8167 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8168 if (stub_entry->h->oh != NULL
8169 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8170 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8171 {
8172 /* Point the symbol at the stub. There may be multiple stubs,
8173 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8174 defined somewhere. Maybe defining the symbol in the stub
8175 section is a silly idea. If we didn't do this, htab->top_id
8176 could disappear. */
34814b9f
AM		 8177 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8178 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8179 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8180 }
8181
721956f4 8182 /* Now build the stub. */
411e1bfb
AM		 8183 off = (bfd_vma) -1;
8184 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8185 if (ent->addend == stub_entry->addend)
8186 {
8187 off = ent->plt.offset;
8188 break;
8189 }
721956f4
AM		 8190 if (off >= (bfd_vma) -2)
8191 abort ();
8192
8193 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8194 off += (htab->plt->output_offset
8195 + htab->plt->output_section->vma
8196 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8197 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8198
ad8e1ba5 8199 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8200 {
8201 (*_bfd_error_handler)
8202 (_("linkage table error against `%s'"),
8203 stub_entry->h->elf.root.root.string);
8204 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8205 htab->stub_error = TRUE;
8206 return FALSE;
721956f4
AM		 8207 }
8208
97b639ba 8209 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8210 size = p - loc;
8211 break;
8212
8213 default:
8214 BFD_FAIL ();
b34976b6 8215 return FALSE;
721956f4
AM		 8216 }
8217
eea6121a 8218 stub_entry->stub_sec->size += size;
97b639ba 8219
ee75fd95 8220 if (htab->emit_stub_syms)
97b639ba
AM		 8221 {
8222 struct elf_link_hash_entry *h;
ee75fd95
AM		 8223 size_t len1, len2;
8224 char *name;
8225 const char *const stub_str[] = { "long_branch",
8226 "long_branch_r2off",
8227 "plt_branch",
8228 "plt_branch_r2off",
8229 "plt_call" };
8230
8231 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8232 len2 = strlen (stub_entry->root.string);
8233 name = bfd_malloc (len1 + len2 + 2);
8234 if (name == NULL)
8235 return FALSE;
8236 memcpy (name, stub_entry->root.string, 9);
8237 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8238 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8239 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8240 if (h == NULL)
8241 return FALSE;
8242 if (h->root.type == bfd_link_hash_new)
8243 {
8244 h->root.type = bfd_link_hash_defined;
8245 h->root.u.def.section = stub_entry->stub_sec;
8246 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8247 h->ref_regular = 1;
8248 h->def_regular = 1;
8249 h->ref_regular_nonweak = 1;
8250 h->forced_local = 1;
8251 h->non_elf = 0;
97b639ba
AM		 8252 }
8253 }
8254
b34976b6 8255 return TRUE;
721956f4
AM		 8256}
8257
8258/* As above, but don't actually build the stub. Just bump offset so
8259 we know stub section sizes, and select plt_branch stubs where
8260 long_branch stubs won't do. */
8261
b34976b6 8262static bfd_boolean
4ce794b7 8263ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8264{
8265 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8266 struct bfd_link_info *info;
721956f4
AM		 8267 struct ppc_link_hash_table *htab;
8268 bfd_vma off;
8269 int size;
8270
8271 /* Massage our args to the form they really have. */
8272 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8273 info = in_arg;
8274
8275 htab = ppc_hash_table (info);
721956f4
AM		 8276
8277 if (stub_entry->stub_type == ppc_stub_plt_call)
8278 {
411e1bfb 8279 struct plt_entry *ent;
58ac9f71 8280 off = (bfd_vma) -1;
411e1bfb
AM		 8281 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8282 if (ent->addend == stub_entry->addend)
8283 {
8284 off = ent->plt.offset & ~(bfd_vma) 1;
8285 break;
8286 }
58ac9f71 8287 if (off >= (bfd_vma) -2)
411e1bfb 8288 abort ();
4ce794b7
AM		 8289 off += (htab->plt->output_offset
8290 + htab->plt->output_section->vma
8291 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8292 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8293
ad8e1ba5 8294 size = PLT_CALL_STUB_SIZE;
4ce794b7 8295 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8296 size += 4;
8297 }
8298 else
8299 {
ad8e1ba5
AM		 8300 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8301 variants. */
721956f4
AM		 8302 off = (stub_entry->target_value
8303 + stub_entry->target_section->output_offset
8304 + stub_entry->target_section->output_section->vma);
eea6121a 8305 off -= (stub_entry->stub_sec->size
721956f4
AM		 8306 + stub_entry->stub_sec->output_offset
8307 + stub_entry->stub_sec->output_section->vma);
8308
ad8e1ba5
AM		 8309 /* Reset the stub type from the plt variant in case we now
8310 can reach with a shorter stub. */
8311 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8312 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8313
8314 size = 4;
8315 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8316 {
8317 off -= 12;
8318 size = 16;
8319 }
8320
8321 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8322 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8323 {
8324 struct ppc_branch_hash_entry *br_entry;
8325
8326 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8327 stub_entry->root.string + 9,
b34976b6 8328 TRUE, FALSE);
721956f4
AM		 8329 if (br_entry == NULL)
8330 {
8331 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8332 stub_entry->root.string + 9);
b34976b6
AM		 8333 htab->stub_error = TRUE;
8334 return FALSE;
721956f4
AM		 8335 }
8336
8337 if (br_entry->iter != htab->stub_iteration)
8338 {
8339 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8340 br_entry->offset = htab->brlt->size;
8341 htab->brlt->size += 8;
63bc6f6c 8342
ee75fd95 8343 if (htab->relbrlt != NULL)
eea6121a 8344 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8345 }
ad8e1ba5
AM		 8346
8347 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8348 size = 16;
ad8e1ba5
AM		 8349 if (stub_entry->stub_type != ppc_stub_plt_branch)
8350 size = 28;
721956f4 8351 }
ee75fd95
AM		 8352
8353 if (info->emitrelocations
8354 && (stub_entry->stub_type == ppc_stub_long_branch
8355 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8356 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8357 }
8358
eea6121a 8359 stub_entry->stub_sec->size += size;
b34976b6 8360 return TRUE;
721956f4
AM		 8361}
8362
8363/* Set up various things so that we can make a list of input sections
8364 for each output section included in the link. Returns -1 on error,
cedb70c5 8365 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8366
8367int
4c52953f
AM		 8368ppc64_elf_setup_section_lists (bfd *output_bfd,
8369 struct bfd_link_info *info,
8370 int no_multi_toc)
721956f4
AM		 8371{
8372 bfd *input_bfd;
734b6cf9 8373 int top_id, top_index, id;
721956f4 8374 asection *section;
734b6cf9 8375 asection **input_list;
721956f4
AM		 8376 bfd_size_type amt;
8377 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8378
4c52953f
AM		 8379 htab->no_multi_toc = no_multi_toc;
8380
4ce794b7 8381 if (htab->brlt == NULL)
721956f4
AM		 8382 return 0;
8383
1e2f5b6e 8384 /* Find the top input section id. */
3d6f9012 8385 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8386 input_bfd != NULL;
8387 input_bfd = input_bfd->link_next)
8388 {
721956f4
AM		 8389 for (section = input_bfd->sections;
8390 section != NULL;
8391 section = section->next)
8392 {
8393 if (top_id < section->id)
8394 top_id = section->id;
8395 }
8396 }
721956f4 8397
8f3bab57 8398 htab->top_id = top_id;
721956f4 8399 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8400 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8401 if (htab->stub_group == NULL)
8402 return -1;
8403
3d6f9012
AM		 8404 /* Set toc_off for com, und, abs and ind sections. */
8405 for (id = 0; id < 3; id++)
8406 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8407
3d6f9012 8408 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8409
8410 /* We can't use output_bfd->section_count here to find the top output
8411 section index as some sections may have been removed, and
8423293d 8412 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8413 for (section = output_bfd->sections, top_index = 0;
8414 section != NULL;
8415 section = section->next)
8416 {
8417 if (top_index < section->index)
8418 top_index = section->index;
8419 }
8420
8421 htab->top_index = top_index;
8422 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8423 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8424 htab->input_list = input_list;
8425 if (input_list == NULL)
8426 return -1;
8427
721956f4
AM		 8428 return 1;
8429}
8430
e717da7e
AM		 8431/* The linker repeatedly calls this function for each TOC input section
8432 and linker generated GOT section. Group input bfds such that the toc
8433 within a group is less than 64k in size. Will break with cute linker
8434 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8435
8436void
4ce794b7 8437ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8438{
8439 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8440
4c52953f
AM		 8441 if (!htab->no_multi_toc)
8442 {
8443 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8444 bfd_vma off = addr - htab->toc_curr;
8445
8446 if (off + isec->size > 0x10000)
8447 htab->toc_curr = addr;
99877b66 8448
4c52953f
AM		 8449 elf_gp (isec->owner) = (htab->toc_curr
8450 - elf_gp (isec->output_section->owner)
8451 + TOC_BASE_OFF);
8452 }
ad8e1ba5
AM		 8453}
8454
8455/* Called after the last call to the above function. */
8456
8457void
4c52953f 8458ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8459{
8460 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8461
4c52953f
AM		 8462 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8463
ad8e1ba5
AM		 8464 /* toc_curr tracks the TOC offset used for code sections below in
8465 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8466 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8467}
8468
9b5ecbd0
AM		 8469/* No toc references were found in ISEC. If the code in ISEC makes no
8470 calls, then there's no need to use toc adjusting stubs when branching
8471 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8472 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8473 needed, and 2 if a cyclical call-graph was found but no other reason
8474 for a stub was detected. If called from the top level, a return of
8475 2 means the same as a return of 0. */
9b5ecbd0
AM		 8476
8477static int
4ce794b7 8478toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8479{
4c52953f
AM		 8480 Elf_Internal_Rela *relstart, *rel;
8481 Elf_Internal_Sym *local_syms;
9b5ecbd0 8482 int ret;
4c52953f 8483 struct ppc_link_hash_table *htab;
9b5ecbd0 8484
772119ce
AM		 8485 /* We know none of our code bearing sections will need toc stubs. */
8486 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8487 return 0;
8488
eea6121a 8489 if (isec->size == 0)
082c50f8
AM		 8490 return 0;
8491
4c52953f
AM		 8492 if (isec->output_section == NULL)
8493 return 0;
8494
9b5ecbd0
AM		 8495 /* Hack for linux kernel. .fixup contains branches, but only back to
8496 the function that hit an exception. */
4c52953f
AM		 8497 if (strcmp (isec->name, ".fixup") == 0)
8498 return 0;
9b5ecbd0 8499
4c52953f
AM		 8500 if (isec->reloc_count == 0)
8501 return 0;
8502
8503 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8504 info->keep_memory);
8505 if (relstart == NULL)
8506 return -1;
8507
8508 /* Look for branches to outside of this section. */
8509 local_syms = NULL;
8510 ret = 0;
8511 htab = ppc_hash_table (info);
8512 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8513 {
4c52953f
AM		 8514 enum elf_ppc64_reloc_type r_type;
8515 unsigned long r_symndx;
8516 struct elf_link_hash_entry *h;
8517 Elf_Internal_Sym *sym;
8518 asection *sym_sec;
8519 long *opd_adjust;
8520 bfd_vma sym_value;
8521 bfd_vma dest;
8522
8523 r_type = ELF64_R_TYPE (rel->r_info);
8524 if (r_type != R_PPC64_REL24
8525 && r_type != R_PPC64_REL14
8526 && r_type != R_PPC64_REL14_BRTAKEN
8527 && r_type != R_PPC64_REL14_BRNTAKEN)
8528 continue;
8529
8530 r_symndx = ELF64_R_SYM (rel->r_info);
8531 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8532 isec->owner))
9b5ecbd0 8533 {
4c52953f
AM		 8534 ret = -1;
8535 break;
9b5ecbd0 8536 }
9b5ecbd0 8537
2917689a
AM		 8538 /* Calls to dynamic lib functions go through a plt call stub
8539 that uses r2. Branches to undefined symbols might be a call
8540 using old-style dot symbols that can be satisfied by a plt
8541 call into a new-style dynamic library. */
4c52953f 8542 if (sym_sec == NULL)
2917689a
AM		 8543 {
8544 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8545 if (eh != NULL
8546 && eh->oh != NULL
8547 && eh->oh->elf.plt.plist != NULL)
8548 {
8549 ret = 1;
8550 break;
8551 }
4c52953f 8552
2917689a
AM		 8553 /* Ignore other undefined symbols. */
8554 continue;
8555 }
8556
8557 /* Assume branches to other sections not included in the link need
8558 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8559 if (sym_sec->output_section == NULL)
8560 {
8561 ret = 1;
8562 break;
8563 }
8564
8565 if (h == NULL)
8566 sym_value = sym->st_value;
8567 else
8568 {
8569 if (h->root.type != bfd_link_hash_defined
8570 && h->root.type != bfd_link_hash_defweak)
8571 abort ();
8572 sym_value = h->root.u.def.value;
8573 }
8574 sym_value += rel->r_addend;
8575
8576 /* If this branch reloc uses an opd sym, find the code section. */
8577 opd_adjust = get_opd_info (sym_sec);
8578 if (opd_adjust != NULL)
8579 {
4c52953f
AM		 8580 if (h == NULL)
8581 {
8582 long adjust;
8583
8584 adjust = opd_adjust[sym->st_value / 8];
8585 if (adjust == -1)
8586 /* Assume deleted functions won't ever be called. */
8587 continue;
8588 sym_value += adjust;
8589 }
8590
8591 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8592 if (dest == (bfd_vma) -1)
8593 continue;
8594 }
8595 else
8596 dest = (sym_value
8597 + sym_sec->output_offset
8598 + sym_sec->output_section->vma);
8599
8600 /* Ignore branch to self. */
8601 if (sym_sec == isec)
8602 continue;
8603
8604 /* If the called function uses the toc, we need a stub. */
8605 if (sym_sec->has_toc_reloc
8606 || sym_sec->makes_toc_func_call)
8607 {
8608 ret = 1;
8609 break;
8610 }
8611
8612 /* Assume any branch that needs a long branch stub might in fact
8613 need a plt_branch stub. A plt_branch stub uses r2. */
8614 else if (dest - (isec->output_offset
8615 + isec->output_section->vma
8616 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8617 {
8618 ret = 1;
8619 break;
8620 }
4c52953f
AM		 8621
8622 /* If calling back to a section in the process of being tested, we
8623 can't say for sure that no toc adjusting stubs are needed, so
8624 don't return zero. */
8625 else if (sym_sec->call_check_in_progress)
8626 ret = 2;
8627
8628 /* Branches to another section that itself doesn't have any TOC
8629 references are OK. Recursively call ourselves to check. */
8630 else if (sym_sec->id <= htab->top_id
8631 && htab->stub_group[sym_sec->id].toc_off == 0)
8632 {
8633 int recur;
8634
8635 /* Mark current section as indeterminate, so that other
8636 sections that call back to current won't be marked as
8637 known. */
8638 isec->call_check_in_progress = 1;
8639 recur = toc_adjusting_stub_needed (info, sym_sec);
8640 isec->call_check_in_progress = 0;
8641
8642 if (recur < 0)
8643 {
8644 /* An error. Exit. */
8645 ret = -1;
8646 break;
8647 }
8648 else if (recur <= 1)
8649 {
8650 /* Known result. Mark as checked and set section flag. */
8651 htab->stub_group[sym_sec->id].toc_off = 1;
8652 if (recur != 0)
8653 {
8654 sym_sec->makes_toc_func_call = 1;
8655 ret = 1;
8656 break;
8657 }
8658 }
8659 else
8660 {
8661 /* Unknown result. Continue checking. */
8662 ret = 2;
8663 }
8664 }
9b5ecbd0
AM		 8665 }
8666
4c52953f
AM		 8667 if (local_syms != NULL
8668 && (elf_tdata (isec->owner)->symtab_hdr.contents
8669 != (unsigned char *) local_syms))
8670 free (local_syms);
8671 if (elf_section_data (isec)->relocs != relstart)
8672 free (relstart);
8673
9b5ecbd0
AM		 8674 return ret;
8675}
8676
721956f4
AM		 8677/* The linker repeatedly calls this function for each input section,
8678 in the order that input sections are linked into output sections.
8679 Build lists of input sections to determine groupings between which
8680 we may insert linker stubs. */
8681
9b5ecbd0 8682bfd_boolean
4ce794b7 8683ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8684{
8685 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8686
734b6cf9
AM		 8687 if ((isec->output_section->flags & SEC_CODE) != 0
8688 && isec->output_section->index <= htab->top_index)
721956f4 8689 {
734b6cf9 8690 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8691 /* Steal the link_sec pointer for our list. */
721956f4 8692#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8693 /* This happens to make the list in reverse order,
8694 which is what we want. */
734b6cf9
AM		 8695 PREV_SEC (isec) = *list;
8696 *list = isec;
721956f4 8697 }
ad8e1ba5 8698
4c52953f 8699 if (htab->multi_toc_needed)
9b5ecbd0 8700 {
4c52953f
AM		 8701 /* If a code section has a function that uses the TOC then we need
8702 to use the right TOC (obviously). Also, make sure that .opd gets
8703 the correct TOC value for R_PPC64_TOC relocs that don't have or
8704 can't find their function symbol (shouldn't ever happen now). */
8705 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8706 {
8707 if (elf_gp (isec->owner) != 0)
8708 htab->toc_curr = elf_gp (isec->owner);
8709 }
8710 else if (htab->stub_group[isec->id].toc_off == 0)
8711 {
8712 int ret = toc_adjusting_stub_needed (info, isec);
8713 if (ret < 0)
8714 return FALSE;
8715 else
8716 isec->makes_toc_func_call = ret & 1;
8717 }
9b5ecbd0 8718 }
ad8e1ba5
AM		 8719
8720 /* Functions that don't use the TOC can belong in any TOC group.
8721 Use the last TOC base. This happens to make _init and _fini
8722 pasting work. */
8723 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8724 return TRUE;
721956f4
AM		 8725}
8726
8727/* See whether we can group stub sections together. Grouping stub
8728 sections may result in fewer stubs. More importantly, we need to
8729 put all .init* and .fini* stubs at the beginning of the .init or
8730 .fini output sections respectively, because glibc splits the
8731 _init and _fini functions into multiple parts. Putting a stub in
8732 the middle of a function is not a good idea. */
8733
8734static void
4ce794b7
AM		 8735group_sections (struct ppc_link_hash_table *htab,
8736 bfd_size_type stub_group_size,
8737 bfd_boolean stubs_always_before_branch)
721956f4 8738{
734b6cf9
AM		 8739 asection **list = htab->input_list + htab->top_index;
8740 do
721956f4 8741 {
734b6cf9
AM		 8742 asection *tail = *list;
8743 while (tail != NULL)
721956f4 8744 {
734b6cf9
AM		 8745 asection *curr;
8746 asection *prev;
8747 bfd_size_type total;
8748 bfd_boolean big_sec;
8749 bfd_vma curr_toc;
8750
8751 curr = tail;
eea6121a 8752 total = tail->size;
734b6cf9
AM		 8753 big_sec = total >= stub_group_size;
8754 curr_toc = htab->stub_group[tail->id].toc_off;
8755
8756 while ((prev = PREV_SEC (curr)) != NULL
8757 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8758 < stub_group_size)
8759 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8760 curr = prev;
8761
8762 /* OK, the size from the start of CURR to the end is less
8763 than stub_group_size and thus can be handled by one stub
8764 section. (or the tail section is itself larger than
8765 stub_group_size, in which case we may be toast.) We
8766 should really be keeping track of the total size of stubs
8767 added here, as stubs contribute to the final output
8768 section size. That's a little tricky, and this way will
8769 only break if stubs added make the total size more than
8770 2^25, ie. for the default stub_group_size, if stubs total
8771 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8772 do
721956f4
AM		 8773 {
8774 prev = PREV_SEC (tail);
734b6cf9 8775 /* Set up this stub group. */
721956f4
AM		 8776 htab->stub_group[tail->id].link_sec = curr;
8777 }
734b6cf9
AM		 8778 while (tail != curr && (tail = prev) != NULL);
8779
8780 /* But wait, there's more! Input sections up to stub_group_size
8781 bytes before the stub section can be handled by it too.
8782 Don't do this if we have a really large section after the
8783 stubs, as adding more stubs increases the chance that
8784 branches may not reach into the stub section. */
8785 if (!stubs_always_before_branch && !big_sec)
8786 {
8787 total = 0;
8788 while (prev != NULL
8789 && ((total += tail->output_offset - prev->output_offset)
8790 < stub_group_size)
8791 && htab->stub_group[prev->id].toc_off == curr_toc)
8792 {
8793 tail = prev;
8794 prev = PREV_SEC (tail);
8795 htab->stub_group[tail->id].link_sec = curr;
8796 }
8797 }
8798 tail = prev;
721956f4
AM		 8799 }
8800 }
734b6cf9
AM		 8801 while (list-- != htab->input_list);
8802 free (htab->input_list);
721956f4
AM		 8803#undef PREV_SEC
8804}
8805
721956f4
AM		 8806/* Determine and set the size of the stub section for a final link.
8807
8808 The basic idea here is to examine all the relocations looking for
8809 PC-relative calls to a target that is unreachable with a "bl"
8810 instruction. */
8811
b34976b6 8812bfd_boolean
4ce794b7 8813ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8814 struct bfd_link_info *info,
8815 bfd_signed_vma group_size,
8816 asection *(*add_stub_section) (const char *, asection *),
8817 void (*layout_sections_again) (void))
721956f4
AM		 8818{
8819 bfd_size_type stub_group_size;
b34976b6 8820 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8821 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8822
8823 /* Stash our params away. */
721956f4
AM		 8824 htab->add_stub_section = add_stub_section;
8825 htab->layout_sections_again = layout_sections_again;
8826 stubs_always_before_branch = group_size < 0;
8827 if (group_size < 0)
8828 stub_group_size = -group_size;
8829 else
8830 stub_group_size = group_size;
8831 if (stub_group_size == 1)
8832 {
8833 /* Default values. */
58ac9f71
AM		 8834 if (stubs_always_before_branch)
8835 {
8836 stub_group_size = 0x1e00000;
8837 if (htab->has_14bit_branch)
8838 stub_group_size = 0x7800;
8839 }
8840 else
8841 {
8842 stub_group_size = 0x1c00000;
8843 if (htab->has_14bit_branch)
8844 stub_group_size = 0x7000;
8845 }
721956f4
AM		 8846 }
8847
8848 group_sections (htab, stub_group_size, stubs_always_before_branch);
8849
721956f4
AM		 8850 while (1)
8851 {
8852 bfd *input_bfd;
8853 unsigned int bfd_indx;
8854 asection *stub_sec;
b34976b6 8855 bfd_boolean stub_changed;
721956f4
AM		 8856
8857 htab->stub_iteration += 1;
b34976b6 8858 stub_changed = FALSE;
721956f4
AM		 8859
8860 for (input_bfd = info->input_bfds, bfd_indx = 0;
8861 input_bfd != NULL;
8862 input_bfd = input_bfd->link_next, bfd_indx++)
8863 {
8864 Elf_Internal_Shdr *symtab_hdr;
8865 asection *section;
6cdc0ccc 8866 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8867
8868 /* We'll need the symbol table in a second. */
8869 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8870 if (symtab_hdr->sh_info == 0)
8871 continue;
8872
721956f4
AM		 8873 /* Walk over each section attached to the input bfd. */
8874 for (section = input_bfd->sections;
8875 section != NULL;
8876 section = section->next)
8877 {
721956f4 8878 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8879
8880 /* If there aren't any relocs, then there's nothing more
8881 to do. */
8882 if ((section->flags & SEC_RELOC) == 0
8883 || section->reloc_count == 0)
8884 continue;
8885
8886 /* If this section is a link-once section that will be
8887 discarded, then don't create any stubs. */
8888 if (section->output_section == NULL
8889 || section->output_section->owner != output_bfd)
8890 continue;
8891
1e2f5b6e
AM		 8892 /* Get the relocs. */
8893 internal_relocs
4ce794b7 8894 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8895 info->keep_memory);
721956f4 8896 if (internal_relocs == NULL)
1e2f5b6e 8897 goto error_ret_free_local;
721956f4
AM		 8898
8899 /* Now examine each relocation. */
8900 irela = internal_relocs;
8901 irelaend = irela + section->reloc_count;
8902 for (; irela < irelaend; irela++)
8903 {
4ce794b7
AM		 8904 enum elf_ppc64_reloc_type r_type;
8905 unsigned int r_indx;
721956f4
AM		 8906 enum ppc_stub_type stub_type;
8907 struct ppc_stub_hash_entry *stub_entry;
8387904d 8908 asection *sym_sec, *code_sec;
721956f4
AM		 8909 bfd_vma sym_value;
8910 bfd_vma destination;
8843416a 8911 bfd_boolean ok_dest;
721956f4 8912 struct ppc_link_hash_entry *hash;
8387904d 8913 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8914 struct elf_link_hash_entry *h;
8915 Elf_Internal_Sym *sym;
721956f4
AM		 8916 char *stub_name;
8917 const asection *id_sec;
8387904d 8918 long *opd_adjust;
721956f4
AM		 8919
8920 r_type = ELF64_R_TYPE (irela->r_info);
8921 r_indx = ELF64_R_SYM (irela->r_info);
8922
4ce794b7 8923 if (r_type >= R_PPC64_max)
721956f4
AM		 8924 {
8925 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8926 goto error_ret_free_internal;
721956f4
AM		 8927 }
8928
8929 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8930 if (r_type != R_PPC64_REL24
8931 && r_type != R_PPC64_REL14
8932 && r_type != R_PPC64_REL14_BRTAKEN
8933 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8934 continue;
8935
8936 /* Now determine the call target, its name, value,
8937 section. */
411e1bfb
AM		 8938 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8939 r_indx, input_bfd))
8940 goto error_ret_free_internal;
8941 hash = (struct ppc_link_hash_entry *) h;
8942
8843416a 8943 ok_dest = FALSE;
8387904d 8944 fdh = NULL;
411e1bfb 8945 if (hash == NULL)
721956f4 8946 {
411e1bfb 8947 sym_value = sym->st_value;
8843416a 8948 ok_dest = TRUE;
721956f4
AM		 8949 }
8950 else
8951 {
411e1bfb 8952 sym_value = 0;
99877b66
AM		 8953 /* Recognise an old ABI func code entry sym, and
8954 use the func descriptor sym instead. */
ceb1f1ef 8955 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 8956 && (fdh = get_fdh (hash, htab)) != NULL)
8957 {
8387904d
AM		 8958 if (fdh->elf.root.type == bfd_link_hash_defined
8959 || fdh->elf.root.type == bfd_link_hash_defweak)
8960 {
8961 sym_sec = fdh->elf.root.u.def.section;
8962 sym_value = fdh->elf.root.u.def.value;
8963 if (sym_sec->output_section != NULL)
8964 ok_dest = TRUE;
8965 }
99877b66
AM		 8966 else
8967 fdh = NULL;
8387904d
AM		 8968 }
8969 else if (hash->elf.root.type == bfd_link_hash_defined
8970 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8971 {
721956f4
AM		 8972 sym_value = hash->elf.root.u.def.value;
8973 if (sym_sec->output_section != NULL)
8843416a 8974 ok_dest = TRUE;
721956f4
AM		 8975 }
8976 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8977 ;
8978 else if (hash->elf.root.type == bfd_link_hash_undefined)
8979 ;
8980 else
8981 {
8982 bfd_set_error (bfd_error_bad_value);
8983 goto error_ret_free_internal;
8984 }
8985 }
8986
8843416a
AM		 8987 destination = 0;
8988 if (ok_dest)
8989 {
8990 sym_value += irela->r_addend;
8991 destination = (sym_value
8992 + sym_sec->output_offset
8993 + sym_sec->output_section->vma);
8994 }
8995
8387904d
AM		 8996 code_sec = sym_sec;
8997 opd_adjust = get_opd_info (sym_sec);
8998 if (opd_adjust != NULL)
8999 {
9000 bfd_vma dest;
9001
9002 if (hash == NULL)
9003 {
3f764659 9004 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 9005 if (adjust == -1)
9006 continue;
9007 sym_value += adjust;
9008 }
9009 dest = opd_entry_value (sym_sec, sym_value,
9010 &code_sec, &sym_value);
9011 if (dest != (bfd_vma) -1)
9012 {
9013 destination = dest;
9014 if (fdh != NULL)
9015 {
9016 /* Fixup old ABI sym to point at code
9017 entry. */
99877b66 9018 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9019 hash->elf.root.u.def.section = code_sec;
9020 hash->elf.root.u.def.value = sym_value;
9021 }
9022 }
9023 }
9024
721956f4
AM		 9025 /* Determine what (if any) linker stub is needed. */
9026 stub_type = ppc_type_of_stub (section, irela, &hash,
9027 destination);
ad8e1ba5
AM		 9028
9029 if (stub_type != ppc_stub_plt_call)
9030 {
9031 /* Check whether we need a TOC adjusting stub.
9032 Since the linker pastes together pieces from
9033 different object files when creating the
9034 _init and _fini functions, it may be that a
9035 call to what looks like a local sym is in
9036 fact a call needing a TOC adjustment. */
8387904d
AM		 9037 if (code_sec != NULL
9038 && code_sec->output_section != NULL
9039 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9040 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9041 && (code_sec->has_toc_reloc
9042 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9043 stub_type = ppc_stub_long_branch_r2off;
9044 }
9045
721956f4
AM		 9046 if (stub_type == ppc_stub_none)
9047 continue;
9048
411e1bfb
AM		 9049 /* __tls_get_addr calls might be eliminated. */
9050 if (stub_type != ppc_stub_plt_call
9051 && hash != NULL
8387904d
AM		 9052 && (hash == htab->tls_get_addr
9053 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9054 && section->has_tls_reloc
9055 && irela != internal_relocs)
9056 {
9057 /* Get tls info. */
e7b938ca 9058 char *tls_mask;
411e1bfb 9059
0d4792f7 9060 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9061 irela - 1, input_bfd))
9062 goto error_ret_free_internal;
e7b938ca 9063 if (*tls_mask != 0)
411e1bfb
AM		 9064 continue;
9065 }
9066
721956f4
AM		 9067 /* Support for grouping stub sections. */
9068 id_sec = htab->stub_group[section->id].link_sec;
9069
9070 /* Get the name of this stub. */
9071 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9072 if (!stub_name)
9073 goto error_ret_free_internal;
9074
9075 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9076 stub_name, FALSE, FALSE);
721956f4
AM		 9077 if (stub_entry != NULL)
9078 {
9079 /* The proper stub has already been created. */
9080 free (stub_name);
9081 continue;
9082 }
9083
9084 stub_entry = ppc_add_stub (stub_name, section, htab);
9085 if (stub_entry == NULL)
9086 {
9087 free (stub_name);
6cdc0ccc
AM		 9088 error_ret_free_internal:
9089 if (elf_section_data (section)->relocs == NULL)
9090 free (internal_relocs);
9091 error_ret_free_local:
9092 if (local_syms != NULL
9093 && (symtab_hdr->contents
9094 != (unsigned char *) local_syms))
9095 free (local_syms);
b34976b6 9096 return FALSE;
721956f4
AM		 9097 }
9098
ad8e1ba5 9099 stub_entry->stub_type = stub_type;
721956f4 9100 stub_entry->target_value = sym_value;
8387904d 9101 stub_entry->target_section = code_sec;
721956f4 9102 stub_entry->h = hash;
411e1bfb 9103 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9104
9105 if (stub_entry->h != NULL)
9106 htab->stub_globals += 1;
9107
b34976b6 9108 stub_changed = TRUE;
721956f4
AM		 9109 }
9110
9111 /* We're done with the internal relocs, free them. */
6cdc0ccc 9112 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9113 free (internal_relocs);
721956f4 9114 }
6cdc0ccc
AM		 9115
9116 if (local_syms != NULL
9117 && symtab_hdr->contents != (unsigned char *) local_syms)
9118 {
9119 if (!info->keep_memory)
9120 free (local_syms);
9121 else
9122 symtab_hdr->contents = (unsigned char *) local_syms;
9123 }
721956f4
AM		 9124 }
9125
9126 if (!stub_changed)
9127 break;
9128
9129 /* OK, we've added some stubs. Find out the new size of the
9130 stub sections. */
9131 for (stub_sec = htab->stub_bfd->sections;
9132 stub_sec != NULL;
9133 stub_sec = stub_sec->next)
e717da7e 9134 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 9135 {
9136 stub_sec->size = 0;
9137 stub_sec->reloc_count = 0;
9138 }
eea6121a
AM		 9139
9140 htab->brlt->size = 0;
ee75fd95 9141 if (htab->relbrlt != NULL)
eea6121a 9142 htab->relbrlt->size = 0;
721956f4 9143
63bc6f6c 9144 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 9145
9146 /* Ask the linker to do its stuff. */
9147 (*htab->layout_sections_again) ();
9148 }
9149
afbe61cf
AM		 9150 /* It would be nice to strip .branch_lt from the output if the
9151 section is empty, but it's too late. If we strip sections here,
9152 the dynamic symbol table is corrupted since the section symbol
9153 for the stripped section isn't written. */
721956f4 9154
b34976b6 9155 return TRUE;
721956f4
AM		 9156}
9157
9158/* Called after we have determined section placement. If sections
805fc799 9159 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9160
805fc799 9161bfd_vma
4ce794b7 9162ppc64_elf_toc (bfd *obfd)
721956f4 9163{
805fc799
AM		 9164 asection *s;
9165 bfd_vma TOCstart;
721956f4 9166
805fc799
AM		 9167 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9168 order. The TOC starts where the first of these sections starts. */
9169 s = bfd_get_section_by_name (obfd, ".got");
9170 if (s == NULL)
9171 s = bfd_get_section_by_name (obfd, ".toc");
9172 if (s == NULL)
9173 s = bfd_get_section_by_name (obfd, ".tocbss");
9174 if (s == NULL)
9175 s = bfd_get_section_by_name (obfd, ".plt");
9176 if (s == NULL)
9177 {
9178 /* This may happen for
9179 o references to TOC base (SYM@toc / TOC[tc0]) without a
9180 .toc directive
9181 o bad linker script
9182 o --gc-sections and empty TOC sections
9183
9184 FIXME: Warn user? */
9185
9186 /* Look for a likely section. We probably won't even be
9187 using TOCstart. */
9188 for (s = obfd->sections; s != NULL; s = s->next)
9189 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9190 == (SEC_ALLOC | SEC_SMALL_DATA))
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_SMALL_DATA))
9195 == (SEC_ALLOC | SEC_SMALL_DATA))
9196 break;
721956f4 9197 if (s == NULL)
805fc799
AM		 9198 for (s = obfd->sections; s != NULL; s = s->next)
9199 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9200 break;
721956f4 9201 if (s == NULL)
805fc799
AM		 9202 for (s = obfd->sections; s != NULL; s = s->next)
9203 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9204 break;
9205 }
721956f4 9206
805fc799
AM		 9207 TOCstart = 0;
9208 if (s != NULL)
9209 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9210
805fc799 9211 return TOCstart;
721956f4
AM		 9212}
9213
9214/* Build all the stubs associated with the current output file.
9215 The stubs are kept in a hash table attached to the main linker
9216 hash table. This function is called via gldelf64ppc_finish. */
9217
b34976b6 9218bfd_boolean
4ce794b7
AM		 9219ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9220 struct bfd_link_info *info,
9221 char **stats)
5d1634d7
AM		 9222{
9223 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9224 asection *stub_sec;
5d1634d7 9225 bfd_byte *p;
e717da7e 9226 int stub_sec_count = 0;
5d1634d7 9227
ad8e1ba5 9228 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9229
9230 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9231 for (stub_sec = htab->stub_bfd->sections;
9232 stub_sec != NULL;
9233 stub_sec = stub_sec->next)
eea6121a
AM		 9234 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9235 && stub_sec->size != 0)
e717da7e 9236 {
eea6121a
AM		 9237 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9238 if (stub_sec->contents == NULL)
9239 return FALSE;
9240 /* We want to check that built size is the same as calculated
9241 size. rawsize is a convenient location to use. */
9242 stub_sec->rawsize = stub_sec->size;
9243 stub_sec->size = 0;
e717da7e 9244 }
5d1634d7 9245
4ce794b7 9246 if (htab->plt != NULL)
5d1634d7 9247 {
9f951329 9248 unsigned int indx;
ad8e1ba5 9249 bfd_vma plt0;
9f951329 9250
721956f4 9251 /* Build the .glink plt call stub. */
4ce794b7
AM		 9252 plt0 = (htab->plt->output_section->vma
9253 + htab->plt->output_offset
9254 - (htab->glink->output_section->vma
9255 + htab->glink->output_offset
ad8e1ba5
AM		 9256 + GLINK_CALL_STUB_SIZE));
9257 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9258 {
ad8e1ba5
AM		 9259 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9260 bfd_set_error (bfd_error_bad_value);
9261 return FALSE;
721956f4 9262 }
721956f4 9263
97b639ba
AM		 9264 if (htab->emit_stub_syms)
9265 {
9266 struct elf_link_hash_entry *h;
9267 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9268 if (h == NULL)
9269 return FALSE;
9270 if (h->root.type == bfd_link_hash_new)
9271 {
9272 h->root.type = bfd_link_hash_defined;
9273 h->root.u.def.section = htab->glink;
9274 h->root.u.def.value = 0;
f5385ebf
AM		 9275 h->ref_regular = 1;
9276 h->def_regular = 1;
9277 h->ref_regular_nonweak = 1;
9278 h->forced_local = 1;
9279 h->non_elf = 0;
97b639ba
AM		 9280 }
9281 }
4ce794b7
AM		 9282 p = htab->glink->contents;
9283 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9284 p += 4;
4ce794b7 9285 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9286 p += 4;
4ce794b7 9287 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9288 p += 4;
4ce794b7 9289 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9290 p += 4;
4ce794b7 9291 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9292 p += 4;
4ce794b7 9293 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9294 p += 4;
4ce794b7 9295 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9296 p += 4;
4ce794b7 9297 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9298 p += 4;
4ce794b7 9299 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9300 p += 4;
4ce794b7 9301 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9302 p += 4;
4ce794b7 9303 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9304 p += 4;
4ce794b7 9305 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9306 p += 4;
4ce794b7 9307 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9308 p += 4;
4ce794b7 9309 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9310 p += 4;
4ce794b7 9311 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9312 p += 4;
4ce794b7 9313 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9314 p += 4;
9315
9f951329
AM		 9316 /* Build the .glink lazy link call stubs. */
9317 indx = 0;
eea6121a 9318 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9319 {
9320 if (indx < 0x8000)
9321 {
4ce794b7 9322 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9323 p += 4;
9324 }
9325 else
9326 {
4ce794b7 9327 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9328 p += 4;
4ce794b7 9329 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9330 p += 4;
9331 }
4ce794b7
AM		 9332 bfd_put_32 (htab->glink->owner,
9333 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9334 indx++;
9f951329
AM		 9335 p += 4;
9336 }
eea6121a 9337 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9338 }
5d1634d7 9339
eea6121a 9340 if (htab->brlt->size != 0)
721956f4 9341 {
4ce794b7 9342 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9343 htab->brlt->size);
4ce794b7 9344 if (htab->brlt->contents == NULL)
b34976b6 9345 return FALSE;
721956f4 9346 }
ee75fd95 9347 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9348 {
9349 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9350 htab->relbrlt->size);
63bc6f6c
AM		 9351 if (htab->relbrlt->contents == NULL)
9352 return FALSE;
9353 }
5d1634d7 9354
721956f4
AM		 9355 /* Build the stubs as directed by the stub hash table. */
9356 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9357
721956f4
AM		 9358 for (stub_sec = htab->stub_bfd->sections;
9359 stub_sec != NULL;
9360 stub_sec = stub_sec->next)
e717da7e
AM		 9361 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9362 {
9363 stub_sec_count += 1;
eea6121a 9364 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9365 break;
9366 }
5d1634d7 9367
721956f4 9368 if (stub_sec != NULL
eea6121a 9369 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9370 {
b34976b6 9371 htab->stub_error = TRUE;
721956f4 9372 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9373 }
721956f4 9374
d2a300cf
AM		 9375 if (htab->stub_error)
9376 return FALSE;
9377
9378 if (stats != NULL)
9379 {
9380 *stats = bfd_malloc (500);
9381 if (*stats == NULL)
9382 return FALSE;
9383
ee75fd95 9384 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9385 " branch %lu\n"
9386 " toc adjust %lu\n"
9387 " long branch %lu\n"
9388 " long toc adj %lu\n"
9389 " plt call %lu"),
e717da7e 9390 stub_sec_count,
ee75fd95 9391 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9392 htab->stub_count[ppc_stub_long_branch - 1],
9393 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9394 htab->stub_count[ppc_stub_plt_branch - 1],
9395 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9396 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9397 }
9398 return TRUE;
5bd4f169
AM		 9399}
9400
99877b66
AM		 9401/* This function undoes the changes made by add_symbol_adjust. */
9402
9403static bfd_boolean
9404undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9405{
9406 struct ppc_link_hash_entry *eh;
9407
9408 if (h->root.type == bfd_link_hash_indirect)
9409 return TRUE;
9410
9411 if (h->root.type == bfd_link_hash_warning)
9412 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9413
9414 eh = (struct ppc_link_hash_entry *) h;
9415 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9416 return TRUE;
9417
9418 eh->elf.root.type = bfd_link_hash_undefined;
9419 return TRUE;
9420}
9421
9422void
9423ppc64_elf_restore_symbols (struct bfd_link_info *info)
9424{
9425 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9426 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9427}
9428
5bd4f169
AM		 9429/* The RELOCATE_SECTION function is called by the ELF backend linker
9430 to handle the relocations for a section.
9431
9432 The relocs are always passed as Rela structures; if the section
9433 actually uses Rel structures, the r_addend field will always be
9434 zero.
9435
9436 This function is responsible for adjust the section contents as
9437 necessary, and (if using Rela relocs and generating a
1049f94e 9438 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9439 necessary.
9440
9441 This function does not have to worry about setting the reloc
9442 address or the reloc symbol index.
9443
9444 LOCAL_SYMS is a pointer to the swapped in local symbols.
9445
9446 LOCAL_SECTIONS is an array giving the section in the input file
9447 corresponding to the st_shndx field of each local symbol.
9448
9449 The global hash table entry for the global symbols can be found
9450 via elf_sym_hashes (input_bfd).
9451
1049f94e 9452 When generating relocatable output, this function must handle
5bd4f169
AM		 9453 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9454 going to be the section symbol corresponding to the output
9455 section, which means that the addend must be adjusted
9456 accordingly. */
9457
b34976b6 9458static bfd_boolean
4ce794b7
AM		 9459ppc64_elf_relocate_section (bfd *output_bfd,
9460 struct bfd_link_info *info,
9461 bfd *input_bfd,
9462 asection *input_section,
9463 bfd_byte *contents,
9464 Elf_Internal_Rela *relocs,
9465 Elf_Internal_Sym *local_syms,
9466 asection **local_sections)
5bd4f169 9467{
65f38f15 9468 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9469 Elf_Internal_Shdr *symtab_hdr;
9470 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9471 Elf_Internal_Rela *rel;
9472 Elf_Internal_Rela *relend;
411e1bfb
AM		 9473 Elf_Internal_Rela outrel;
9474 bfd_byte *loc;
411e1bfb 9475 struct got_entry **local_got_ents;
5bd4f169 9476 bfd_vma TOCstart;
b34976b6
AM		 9477 bfd_boolean ret = TRUE;
9478 bfd_boolean is_opd;
96e0dda4 9479 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9480 bfd_boolean is_power4 = FALSE;
5bd4f169 9481
1049f94e 9482 if (info->relocatable)
b34976b6 9483 return TRUE;
b491616a 9484
65f38f15 9485 /* Initialize howto table if needed. */
5bd4f169 9486 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9487 ppc_howto_init ();
9488
65f38f15 9489 htab = ppc_hash_table (info);
ee75fd95
AM		 9490
9491 /* Don't relocate stub sections. */
9492 if (input_section->owner == htab->stub_bfd)
9493 return TRUE;
9494
411e1bfb 9495 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9496 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9497 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9498 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9499 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9500
5bd4f169
AM		 9501 rel = relocs;
9502 relend = relocs + input_section->reloc_count;
9503 for (; rel < relend; rel++)
9504 {
04c9666a 9505 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9506 bfd_vma addend;
9507 bfd_reloc_status_type r;
9508 Elf_Internal_Sym *sym;
9509 asection *sec;
039b3fef
AM		 9510 struct elf_link_hash_entry *h_elf;
9511 struct ppc_link_hash_entry *h;
9512 struct ppc_link_hash_entry *fdh;
5bd4f169 9513 const char *sym_name;
0d4792f7 9514 unsigned long r_symndx, toc_symndx;
951fd09b 9515 char tls_mask, tls_gd, tls_type;
0d4792f7 9516 char sym_type;
5bd4f169 9517 bfd_vma relocation;
b34976b6
AM		 9518 bfd_boolean unresolved_reloc;
9519 bfd_boolean warned;
50bc7936 9520 unsigned long insn, mask;
721956f4
AM		 9521 struct ppc_stub_hash_entry *stub_entry;
9522 bfd_vma max_br_offset;
9523 bfd_vma from;
5bd4f169 9524
4ce794b7 9525 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9526 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9527
9528 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9529 symbol of the previous ADDR64 reloc. The symbol gives us the
9530 proper TOC base to use. */
9531 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9532 && rel != relocs
9533 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9534 && is_opd)
9535 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9536
4ce794b7
AM		 9537 sym = NULL;
9538 sec = NULL;
039b3fef 9539 h_elf = NULL;
4ce794b7 9540 sym_name = NULL;
b34976b6
AM		 9541 unresolved_reloc = FALSE;
9542 warned = FALSE;
65f38f15 9543
0b13192e 9544 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9545 {
9546 /* It's a local symbol. */
4025353c
AM		 9547 long *opd_adjust;
9548
5bd4f169
AM		 9549 sym = local_syms + r_symndx;
9550 sec = local_sections[r_symndx];
26c61ae5 9551 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9552 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9553 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9554 opd_adjust = get_opd_info (sec);
9555 if (opd_adjust != NULL)
1e2f5b6e 9556 {
3f764659 9557 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9558 if (adjust == -1)
9559 relocation = 0;
9560 else
9561 relocation += adjust;
1e2f5b6e 9562 }
5bd4f169
AM		 9563 }
9564 else
9565 {
b2a8e766
AM		 9566 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9567 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9568 h_elf, sec, relocation,
b2a8e766 9569 unresolved_reloc, warned);
039b3fef
AM		 9570 sym_name = h_elf->root.root.string;
9571 sym_type = h_elf->type;
5bd4f169 9572 }
039b3fef 9573 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9574
951fd09b
AM		 9575 /* TLS optimizations. Replace instruction sequences and relocs
9576 based on information we collected in tls_optimize. We edit
9577 RELOCS so that --emit-relocs will output something sensible
9578 for the final instruction stream. */
9579 tls_mask = 0;
9580 tls_gd = 0;
0d4792f7 9581 toc_symndx = 0;
d881513a 9582 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9583 {
9584 if (h != NULL)
039b3fef 9585 tls_mask = h->tls_mask;
411e1bfb
AM		 9586 else if (local_got_ents != NULL)
9587 {
e7b938ca
AM		 9588 char *lgot_masks;
9589 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9590 tls_mask = lgot_masks[r_symndx];
411e1bfb 9591 }
0d4792f7
AM		 9592 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9593 {
9594 /* Check for toc tls entries. */
9595 char *toc_tls;
9596
9597 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9598 rel, input_bfd))
9599 return FALSE;
9600
9601 if (toc_tls)
9602 tls_mask = *toc_tls;
9603 }
9604 }
9605
9606 /* Check that tls relocs are used with tls syms, and non-tls
9607 relocs are used with non-tls syms. */
9608 if (r_symndx != 0
9609 && r_type != R_PPC64_NONE
9610 && (h == NULL
039b3fef
AM		 9611 || h->elf.root.type == bfd_link_hash_defined
9612 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9613 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9614 {
9615 if (r_type == R_PPC64_TLS && tls_mask != 0)
9616 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9617 ;
9618 else
9619 (*_bfd_error_handler)
9620 (sym_type == STT_TLS
d003868e
AM		 9621 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9622 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9623 input_bfd,
9624 input_section,
0d4792f7
AM		 9625 (long) rel->r_offset,
9626 ppc64_elf_howto_table[r_type]->name,
9627 sym_name);
411e1bfb
AM		 9628 }
9629
9630 /* Ensure reloc mapping code below stays sane. */
9631 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9632 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9633 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9634 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9635 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9636 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9637 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9638 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9639 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9640 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9641 abort ();
0d4792f7 9642
411e1bfb
AM		 9643 switch (r_type)
9644 {
9645 default:
411e1bfb
AM		 9646 break;
9647
9648 case R_PPC64_TOC16:
9649 case R_PPC64_TOC16_LO:
9650 case R_PPC64_TOC16_DS:
9651 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9652 {
9653 /* Check for toc tls entries. */
9654 char *toc_tls;
951fd09b 9655 int retval;
411e1bfb 9656
0d4792f7
AM		 9657 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9658 rel, input_bfd);
951fd09b 9659 if (retval == 0)
411e1bfb
AM		 9660 return FALSE;
9661
9662 if (toc_tls)
9663 {
951fd09b 9664 tls_mask = *toc_tls;
411e1bfb
AM		 9665 if (r_type == R_PPC64_TOC16_DS
9666 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9667 {
9668 if (tls_mask != 0
9669 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9670 goto toctprel;
9671 }
411e1bfb 9672 else
951fd09b
AM		 9673 {
9674 /* If we found a GD reloc pair, then we might be
9675 doing a GD->IE transition. */
9676 if (retval == 2)
9677 {
9678 tls_gd = TLS_TPRELGD;
9679 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9680 goto tls_get_addr_check;
9681 }
9682 else if (retval == 3)
9683 {
9684 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9685 goto tls_get_addr_check;
9686 }
9687 }
411e1bfb
AM		 9688 }
9689 }
9690 break;
9691
9692 case R_PPC64_GOT_TPREL16_DS:
9693 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9694 if (tls_mask != 0
9695 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9696 {
81407a69 9697 toctprel:
411e1bfb
AM		 9698 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9699 insn &= 31 << 21;
9700 insn |= 0x3c0d0000; /* addis 0,13,0 */
9701 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9702 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9703 if (toc_symndx != 0)
9704 {
9705 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9706 /* We changed the symbol. Start over in order to
9707 get h, sym, sec etc. right. */
9708 rel--;
9709 continue;
9710 }
9711 else
9712 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9713 }
9714 break;
9715
9716 case R_PPC64_TLS:
951fd09b
AM		 9717 if (tls_mask != 0
9718 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9719 {
50bc7936 9720 bfd_vma rtra;
411e1bfb 9721 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9722 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9723 == ((31 << 26) | (13 << 11)))
9724 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9725 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9726 == ((31 << 26) | (13 << 16)))
9727 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9728 else
9729 abort ();
9730 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9731 /* add -> addi. */
9732 insn = 14 << 26;
9733 else if ((insn & (31 << 1)) == 23 << 1
9734 && ((insn & (31 << 6)) < 14 << 6
9735 || ((insn & (31 << 6)) >= 16 << 6
9736 && (insn & (31 << 6)) < 24 << 6)))
9737 /* load and store indexed -> dform. */
9738 insn = (32 | ((insn >> 6) & 31)) << 26;
9739 else if ((insn & (31 << 1)) == 21 << 1
9740 && (insn & (0x1a << 6)) == 0)
9741 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9742 insn = (((58 | ((insn >> 6) & 4)) << 26)
9743 | ((insn >> 6) & 1));
9744 else if ((insn & (31 << 1)) == 21 << 1
9745 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9746 /* lwax -> lwa. */
9747 insn = (58 << 26) | 2;
9748 else
9749 abort ();
9750 insn |= rtra;
9751 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9752 /* Was PPC64_TLS which sits on insn boundary, now
9753 PPC64_TPREL16_LO which is at insn+2. */
9754 rel->r_offset += 2;
0d4792f7
AM		 9755 r_type = R_PPC64_TPREL16_LO;
9756 if (toc_symndx != 0)
9757 {
9758 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9759 /* We changed the symbol. Start over in order to
9760 get h, sym, sec etc. right. */
9761 rel--;
9762 continue;
9763 }
9764 else
9765 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9766 }
9767 break;
9768
411e1bfb
AM		 9769 case R_PPC64_GOT_TLSGD16_HI:
9770 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9771 tls_gd = TLS_TPRELGD;
9772 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9773 goto tls_gdld_hi;
9774 break;
9775
411e1bfb
AM		 9776 case R_PPC64_GOT_TLSLD16_HI:
9777 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9778 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9779 {
951fd09b
AM		 9780 tls_gdld_hi:
9781 if ((tls_mask & tls_gd) != 0)
9782 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9783 + R_PPC64_GOT_TPREL16_DS);
9784 else
411e1bfb 9785 {
951fd09b
AM		 9786 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9787 rel->r_offset -= 2;
9788 r_type = R_PPC64_NONE;
411e1bfb 9789 }
951fd09b 9790 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9791 }
9792 break;
9793
951fd09b
AM		 9794 case R_PPC64_GOT_TLSGD16:
9795 case R_PPC64_GOT_TLSGD16_LO:
9796 tls_gd = TLS_TPRELGD;
9797 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9798 goto tls_get_addr_check;
9799 break;
411e1bfb 9800
951fd09b
AM		 9801 case R_PPC64_GOT_TLSLD16:
9802 case R_PPC64_GOT_TLSLD16_LO:
9803 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9804 {
9805 tls_get_addr_check:
9806 if (rel + 1 < relend)
411e1bfb 9807 {
951fd09b
AM		 9808 enum elf_ppc64_reloc_type r_type2;
9809 unsigned long r_symndx2;
9810 struct elf_link_hash_entry *h2;
9811 bfd_vma insn1, insn2, insn3;
9812 bfd_vma offset;
9813
9814 /* The next instruction should be a call to
9815 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9816 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9817 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9818 if (r_symndx2 < symtab_hdr->sh_info
9819 || (r_type2 != R_PPC64_REL14
9820 && r_type2 != R_PPC64_REL14_BRTAKEN
9821 && r_type2 != R_PPC64_REL14_BRNTAKEN
9822 && r_type2 != R_PPC64_REL24))
9823 break;
9824
9825 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9826 while (h2->root.type == bfd_link_hash_indirect
9827 || h2->root.type == bfd_link_hash_warning)
9828 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9829 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9830 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9831 break;
9832
9833 /* OK, it checks out. Replace the call. */
9834 offset = rel[1].r_offset;
9835 insn1 = bfd_get_32 (output_bfd,
9836 contents + rel->r_offset - 2);
9837 insn3 = bfd_get_32 (output_bfd,
9838 contents + offset + 4);
9839 if ((tls_mask & tls_gd) != 0)
411e1bfb 9840 {
951fd09b
AM		 9841 /* IE */
9842 insn1 &= (1 << 26) - (1 << 2);
9843 insn1 |= 58 << 26; /* ld */
9844 insn2 = 0x7c636a14; /* add 3,3,13 */
9845 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9846 if ((tls_mask & TLS_EXPLICIT) == 0)
9847 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9848 + R_PPC64_GOT_TPREL16_DS);
9849 else
9850 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9851 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9852 }
9853 else
951fd09b
AM		 9854 {
9855 /* LE */
9856 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9857 insn2 = 0x38630000; /* addi 3,3,0 */
9858 if (tls_gd == 0)
9859 {
9860 /* Was an LD reloc. */
9861 r_symndx = 0;
e1918d23
AM		 9862 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9863 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9864 }
0d4792f7
AM		 9865 else if (toc_symndx != 0)
9866 r_symndx = toc_symndx;
951fd09b
AM		 9867 r_type = R_PPC64_TPREL16_HA;
9868 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9869 rel[1].r_info = ELF64_R_INFO (r_symndx,
9870 R_PPC64_TPREL16_LO);
9871 rel[1].r_offset += 2;
9872 }
9873 if (insn3 == NOP
9874 || insn3 == CROR_151515 || insn3 == CROR_313131)
9875 {
9876 insn3 = insn2;
9877 insn2 = NOP;
9878 rel[1].r_offset += 4;
9879 }
9880 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9881 bfd_put_32 (output_bfd, insn2, contents + offset);
9882 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9883 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9884 {
0d4792f7
AM		 9885 /* We changed the symbol. Start over in order
9886 to get h, sym, sec etc. right. */
951fd09b
AM		 9887 rel--;
9888 continue;
9889 }
411e1bfb 9890 }
411e1bfb 9891 }
411e1bfb
AM		 9892 break;
9893
9894 case R_PPC64_DTPMOD64:
951fd09b
AM		 9895 if (rel + 1 < relend
9896 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9897 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9898 {
951fd09b
AM		 9899 if ((tls_mask & TLS_GD) == 0)
9900 {
9901 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9902 if ((tls_mask & TLS_TPRELGD) != 0)
9903 r_type = R_PPC64_TPREL64;
9904 else
9905 {
4ce794b7 9906 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9907 r_type = R_PPC64_NONE;
9908 }
9909 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9910 }
9911 }
9912 else
9913 {
9914 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9915 {
4ce794b7 9916 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9917 r_type = R_PPC64_NONE;
951fd09b 9918 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9919 }
411e1bfb
AM		 9920 }
9921 break;
9922
9923 case R_PPC64_TPREL64:
951fd09b 9924 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9925 {
9926 r_type = R_PPC64_NONE;
9927 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9928 }
9929 break;
9930 }
9931
9932 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9933 insn = 0;
b25116a9
AM		 9934 max_br_offset = 1 << 25;
9935 addend = rel->r_addend;
65f38f15 9936 switch (r_type)
5bd4f169
AM		 9937 {
9938 default:
65f38f15 9939 break;
5bd4f169 9940
65f38f15
AM		 9941 /* Branch taken prediction relocations. */
9942 case R_PPC64_ADDR14_BRTAKEN:
9943 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9944 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9945 /* Fall thru. */
65f38f15 9946
86c76c7b 9947 /* Branch not taken prediction relocations. */
65f38f15
AM		 9948 case R_PPC64_ADDR14_BRNTAKEN:
9949 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9950 insn |= bfd_get_32 (output_bfd,
9951 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9952 /* Fall thru. */
86c76c7b 9953
b25116a9
AM		 9954 case R_PPC64_REL14:
9955 max_br_offset = 1 << 15;
9956 /* Fall thru. */
5bd4f169 9957
65f38f15 9958 case R_PPC64_REL24:
ad8e1ba5
AM		 9959 /* Calls to functions with a different TOC, such as calls to
9960 shared objects, need to alter the TOC pointer. This is
9961 done using a linkage stub. A REL24 branching to these
9962 linkage stubs needs to be followed by a nop, as the nop
9963 will be replaced with an instruction to restore the TOC
9964 base pointer. */
b25116a9 9965 stub_entry = NULL;
8387904d 9966 fdh = h;
ad8e1ba5 9967 if (((h != NULL
039b3fef
AM		 9968 && (((fdh = h->oh) != NULL
9969 && fdh->elf.plt.plist != NULL)
9970 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9971 || (sec != NULL
ad8e1ba5 9972 && sec->output_section != NULL
b25116a9 9973 && sec->id <= htab->top_id
ad8e1ba5
AM		 9974 && (htab->stub_group[sec->id].toc_off
9975 != htab->stub_group[input_section->id].toc_off)))
721956f4 9976 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9977 rel, htab)) != NULL
9978 && (stub_entry->stub_type == ppc_stub_plt_call
9979 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9980 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9981 {
b25116a9 9982 bfd_boolean can_plt_call = FALSE;
721956f4 9983
eea6121a 9984 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9985 {
b25116a9
AM		 9986 unsigned long nop;
9987 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9988 if (nop == NOP
9989 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9990 {
4ce794b7 9991 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9992 contents + rel->r_offset + 4);
b25116a9 9993 can_plt_call = TRUE;
41bd81ab 9994 }
5bd4f169 9995 }
721956f4
AM		 9996
9997 if (!can_plt_call)
9998 {
ad8e1ba5
AM		 9999 if (stub_entry->stub_type == ppc_stub_plt_call)
10000 {
10001 /* If this is a plain branch rather than a branch
10002 and link, don't require a nop. */
b25116a9
AM		 10003 unsigned long br;
10004 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
10005 if ((br & 1) == 0)
10006 can_plt_call = TRUE;
ad8e1ba5 10007 }
6ab189d5 10008 else if (h != NULL
039b3fef 10009 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10010 ".__libc_start_main") == 0)
10011 {
10012 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10013 can_plt_call = TRUE;
6ab189d5 10014 }
ad8e1ba5
AM		 10015 else
10016 {
10017 if (strcmp (input_section->output_section->name,
10018 ".init") == 0
10019 || strcmp (input_section->output_section->name,
10020 ".fini") == 0)
10021 (*_bfd_error_handler)
d003868e 10022 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10023 "not supported using your crt files; "
10024 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10025 input_bfd,
10026 input_section,
ad8e1ba5
AM		 10027 (long) rel->r_offset);
10028 else
10029 (*_bfd_error_handler)
d003868e 10030 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10031 "does not allow automatic multiple TOCs; "
10032 "recompile with -mminimal-toc or "
10033 "-fno-optimize-sibling-calls, "
10034 "or make `%s' extern"),
d003868e
AM		 10035 input_bfd,
10036 input_section,
ad8e1ba5
AM		 10037 (long) rel->r_offset,
10038 sym_name,
10039 sym_name);
10040 bfd_set_error (bfd_error_bad_value);
10041 ret = FALSE;
10042 }
721956f4
AM		 10043 }
10044
b25116a9
AM		 10045 if (can_plt_call
10046 && stub_entry->stub_type == ppc_stub_plt_call)
10047 unresolved_reloc = FALSE;
10048 }
10049
8387904d
AM		 10050 if (stub_entry == NULL
10051 && get_opd_info (sec) != NULL)
10052 {
10053 /* The branch destination is the value of the opd entry. */
10054 bfd_vma off = (relocation - sec->output_section->vma
10055 - sec->output_offset + rel->r_addend);
10056 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10057 if (dest != (bfd_vma) -1)
10058 {
10059 relocation = dest;
10060 addend = 0;
10061 }
10062 }
10063
b25116a9
AM		 10064 /* If the branch is out of reach we ought to have a long
10065 branch stub. */
10066 from = (rel->r_offset
10067 + input_section->output_offset
10068 + input_section->output_section->vma);
10069
10070 if (stub_entry == NULL
10071 && (relocation + rel->r_addend - from + max_br_offset
10072 >= 2 * max_br_offset)
10073 && r_type != R_PPC64_ADDR14_BRTAKEN
10074 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10075 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10076 htab);
b25116a9
AM		 10077
10078 if (stub_entry != NULL)
10079 {
10080 /* Munge up the value and addend so that we call the stub
10081 rather than the procedure directly. */
10082 relocation = (stub_entry->stub_offset
10083 + stub_entry->stub_sec->output_offset
10084 + stub_entry->stub_sec->output_section->vma);
10085 addend = 0;
10086 }
10087
10088 if (insn != 0)
10089 {
10090 if (is_power4)
721956f4 10091 {
b25116a9
AM		 10092 /* Set 'a' bit. This is 0b00010 in BO field for branch
10093 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10094 for branch on CTR insns (BO == 1a00t or 1a01t). */
10095 if ((insn & (0x14 << 21)) == (0x04 << 21))
10096 insn |= 0x02 << 21;
10097 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10098 insn |= 0x08 << 21;
10099 else
10100 break;
10101 }
10102 else
10103 {
10104 /* Invert 'y' bit if not the default. */
10105 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10106 insn ^= 0x01 << 21;
721956f4 10107 }
b25116a9
AM		 10108
10109 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10110 }
e86ce104 10111
06da1e8e
AM		 10112 /* NOP out calls to undefined weak functions.
10113 We can thus call a weak function without first
10114 checking whether the function is defined. */
b25116a9 10115 else if (h != NULL
039b3fef 10116 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10117 && r_type == R_PPC64_REL24
10118 && relocation == 0
10119 && rel->r_addend == 0)
e86ce104 10120 {
06da1e8e
AM		 10121 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10122 continue;
e86ce104 10123 }
65f38f15
AM		 10124 break;
10125 }
5bd4f169 10126
65f38f15 10127 /* Set `addend'. */
411e1bfb 10128 tls_type = 0;
65f38f15
AM		 10129 switch (r_type)
10130 {
10131 default:
10132 (*_bfd_error_handler)
d003868e
AM		 10133 (_("%B: unknown relocation type %d for symbol %s"),
10134 input_bfd, (int) r_type, sym_name);
5bd4f169 10135
65f38f15 10136 bfd_set_error (bfd_error_bad_value);
b34976b6 10137 ret = FALSE;
65f38f15 10138 continue;
5bd4f169 10139
65f38f15 10140 case R_PPC64_NONE:
411e1bfb 10141 case R_PPC64_TLS:
04c9666a
AM		 10142 case R_PPC64_GNU_VTINHERIT:
10143 case R_PPC64_GNU_VTENTRY:
65f38f15 10144 continue;
5bd4f169
AM		 10145
10146 /* GOT16 relocations. Like an ADDR16 using the symbol's
10147 address in the GOT as relocation value instead of the
411e1bfb 10148 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10149 symbol and put the symbol value there. */
411e1bfb
AM		 10150 case R_PPC64_GOT_TLSGD16:
10151 case R_PPC64_GOT_TLSGD16_LO:
10152 case R_PPC64_GOT_TLSGD16_HI:
10153 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10154 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10155 goto dogot;
10156
10157 case R_PPC64_GOT_TLSLD16:
10158 case R_PPC64_GOT_TLSLD16_LO:
10159 case R_PPC64_GOT_TLSLD16_HI:
10160 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10161 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10162 goto dogot;
10163
10164 case R_PPC64_GOT_TPREL16_DS:
10165 case R_PPC64_GOT_TPREL16_LO_DS:
10166 case R_PPC64_GOT_TPREL16_HI:
10167 case R_PPC64_GOT_TPREL16_HA:
10168 tls_type = TLS_TLS | TLS_TPREL;
10169 goto dogot;
10170
10171 case R_PPC64_GOT_DTPREL16_DS:
10172 case R_PPC64_GOT_DTPREL16_LO_DS:
10173 case R_PPC64_GOT_DTPREL16_HI:
10174 case R_PPC64_GOT_DTPREL16_HA:
10175 tls_type = TLS_TLS | TLS_DTPREL;
10176 goto dogot;
10177
65f38f15
AM		 10178 case R_PPC64_GOT16:
10179 case R_PPC64_GOT16_LO:
10180 case R_PPC64_GOT16_HI:
10181 case R_PPC64_GOT16_HA:
10182 case R_PPC64_GOT16_DS:
10183 case R_PPC64_GOT16_LO_DS:
411e1bfb 10184 dogot:
5bd4f169
AM		 10185 {
10186 /* Relocation is to the entry for this symbol in the global
10187 offset table. */
e717da7e 10188 asection *got;
d881513a 10189 bfd_vma *offp;
5bd4f169 10190 bfd_vma off;
d881513a 10191 unsigned long indx = 0;
65f38f15 10192
d881513a
AM		 10193 if (tls_type == (TLS_TLS | TLS_LD)
10194 && (h == NULL
f5385ebf 10195 || !h->elf.def_dynamic))
e717da7e 10196 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10197 else
5bd4f169 10198 {
d881513a 10199 struct got_entry *ent;
5bd4f169 10200
d881513a
AM		 10201 if (h != NULL)
10202 {
10203 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10204 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10205 &h->elf)
d881513a 10206 || (info->shared
039b3fef 10207 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10208 /* This is actually a static link, or it is a
10209 -Bsymbolic link and the symbol is defined
10210 locally, or the symbol was forced to be local
10211 because of a version file. */
10212 ;
10213 else
10214 {
039b3fef 10215 indx = h->elf.dynindx;
d881513a
AM		 10216 unresolved_reloc = FALSE;
10217 }
039b3fef 10218 ent = h->elf.got.glist;
d881513a 10219 }
411e1bfb 10220 else
5bd4f169 10221 {
d881513a
AM		 10222 if (local_got_ents == NULL)
10223 abort ();
10224 ent = local_got_ents[r_symndx];
5bd4f169 10225 }
d881513a
AM		 10226
10227 for (; ent != NULL; ent = ent->next)
10228 if (ent->addend == rel->r_addend
e717da7e 10229 && ent->owner == input_bfd
d881513a
AM		 10230 && ent->tls_type == tls_type)
10231 break;
10232 if (ent == NULL)
10233 abort ();
10234 offp = &ent->got.offset;
5bd4f169 10235 }
411e1bfb 10236
e717da7e
AM		 10237 got = ppc64_elf_tdata (input_bfd)->got;
10238 if (got == NULL)
10239 abort ();
10240
411e1bfb
AM		 10241 /* The offset must always be a multiple of 8. We use the
10242 least significant bit to record whether we have already
10243 processed this entry. */
d881513a 10244 off = *offp;
411e1bfb
AM		 10245 if ((off & 1) != 0)
10246 off &= ~1;
5bd4f169
AM		 10247 else
10248 {
411e1bfb
AM		 10249 /* Generate relocs for the dynamic linker, except in
10250 the case of TLSLD where we'll use one entry per
10251 module. */
e717da7e
AM		 10252 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10253
d881513a 10254 *offp = off | 1;
4e795f50
AM		 10255 if ((info->shared || indx != 0)
10256 && (h == NULL
039b3fef
AM		 10257 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10258 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10259 {
e717da7e
AM		 10260 outrel.r_offset = (got->output_section->vma
10261 + got->output_offset
411e1bfb 10262 + off);
81407a69 10263 outrel.r_addend = rel->r_addend;
d881513a 10264 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10265 {
411e1bfb 10266 outrel.r_addend = 0;
e515b051 10267 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10268 if (tls_type == (TLS_TLS | TLS_GD))
10269 {
e717da7e
AM		 10270 loc = relgot->contents;
10271 loc += (relgot->reloc_count++
d881513a
AM		 10272 * sizeof (Elf64_External_Rela));
10273 bfd_elf64_swap_reloca_out (output_bfd,
10274 &outrel, loc);
e515b051 10275 outrel.r_offset += 8;
81407a69 10276 outrel.r_addend = rel->r_addend;
d881513a
AM		 10277 outrel.r_info
10278 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10279 }
411e1bfb 10280 }
951fd09b 10281 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10282 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10283 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10284 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10285 else if (indx == 0)
81407a69
AM		 10286 {
10287 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10288
10289 /* Write the .got section contents for the sake
10290 of prelink. */
e717da7e 10291 loc = got->contents + off;
23fbd6fa
JJ		 10292 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10293 loc);
81407a69 10294 }
411e1bfb
AM		 10295 else
10296 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10297
10298 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10299 {
10300 outrel.r_addend += relocation;
10301 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10302 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10303 }
e717da7e
AM		 10304 loc = relgot->contents;
10305 loc += (relgot->reloc_count++
411e1bfb
AM		 10306 * sizeof (Elf64_External_Rela));
10307 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10308 }
10309
ad8e1ba5 10310 /* Init the .got section contents here if we're not
81407a69 10311 emitting a reloc. */
d881513a 10312 else
411e1bfb 10313 {
d881513a 10314 relocation += rel->r_addend;
7b609f53
AM		 10315 if (tls_type == (TLS_TLS | TLS_LD))
10316 relocation = 1;
10317 else if (tls_type != 0)
411e1bfb 10318 {
e1918d23 10319 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10320 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10321 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10322
7b609f53
AM		 10323 if (tls_type == (TLS_TLS | TLS_GD))
10324 {
10325 bfd_put_64 (output_bfd, relocation,
e717da7e 10326 got->contents + off + 8);
7b609f53
AM		 10327 relocation = 1;
10328 }
411e1bfb 10329 }
7b609f53 10330
411e1bfb 10331 bfd_put_64 (output_bfd, relocation,
e717da7e 10332 got->contents + off);
5bd4f169
AM		 10333 }
10334 }
10335
65f38f15
AM		 10336 if (off >= (bfd_vma) -2)
10337 abort ();
10338
e717da7e 10339 relocation = got->output_offset + off;
65f38f15 10340
5bd4f169 10341 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10342 addend = -TOC_BASE_OFF;
5bd4f169 10343 }
65f38f15
AM		 10344 break;
10345
10346 case R_PPC64_PLT16_HA:
10347 case R_PPC64_PLT16_HI:
10348 case R_PPC64_PLT16_LO:
10349 case R_PPC64_PLT32:
10350 case R_PPC64_PLT64:
10351 /* Relocation is to the entry for this symbol in the
10352 procedure linkage table. */
10353
10354 /* Resolve a PLT reloc against a local symbol directly,
10355 without using the procedure linkage table. */
10356 if (h == NULL)
10357 break;
10358
411e1bfb
AM		 10359 /* It's possible that we didn't make a PLT entry for this
10360 symbol. This happens when statically linking PIC code,
10361 or when using -Bsymbolic. Go find a match if there is a
10362 PLT entry. */
4ce794b7 10363 if (htab->plt != NULL)
65f38f15 10364 {
411e1bfb 10365 struct plt_entry *ent;
039b3fef 10366 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10367 if (ent->addend == rel->r_addend
10368 && ent->plt.offset != (bfd_vma) -1)
10369 {
4ce794b7
AM		 10370 relocation = (htab->plt->output_section->vma
10371 + htab->plt->output_offset
411e1bfb
AM		 10372 + ent->plt.offset);
10373 unresolved_reloc = FALSE;
10374 }
65f38f15 10375 }
65f38f15 10376 break;
5bd4f169 10377
0b13192e
AM		 10378 case R_PPC64_TOC:
10379 /* Relocation value is TOC base. */
10380 relocation = TOCstart;
10381 if (r_symndx == 0)
10382 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10383 else if (unresolved_reloc)
10384 ;
10385 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10386 relocation += htab->stub_group[sec->id].toc_off;
10387 else
10388 unresolved_reloc = TRUE;
10389 goto dodyn2;
10390
5bd4f169
AM		 10391 /* TOC16 relocs. We want the offset relative to the TOC base,
10392 which is the address of the start of the TOC plus 0x8000.
10393 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10394 in this order. */
65f38f15
AM		 10395 case R_PPC64_TOC16:
10396 case R_PPC64_TOC16_LO:
10397 case R_PPC64_TOC16_HI:
10398 case R_PPC64_TOC16_DS:
10399 case R_PPC64_TOC16_LO_DS:
10400 case R_PPC64_TOC16_HA:
ad8e1ba5 10401 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10402 break;
10403
10404 /* Relocate against the beginning of the section. */
65f38f15
AM		 10405 case R_PPC64_SECTOFF:
10406 case R_PPC64_SECTOFF_LO:
10407 case R_PPC64_SECTOFF_HI:
10408 case R_PPC64_SECTOFF_DS:
10409 case R_PPC64_SECTOFF_LO_DS:
10410 case R_PPC64_SECTOFF_HA:
4ce794b7 10411 if (sec != NULL)
65f38f15 10412 addend -= sec->output_section->vma;
5bd4f169
AM		 10413 break;
10414
721956f4
AM		 10415 case R_PPC64_REL14:
10416 case R_PPC64_REL14_BRNTAKEN:
10417 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10418 case R_PPC64_REL24:
10419 break;
10420
411e1bfb
AM		 10421 case R_PPC64_TPREL16:
10422 case R_PPC64_TPREL16_LO:
10423 case R_PPC64_TPREL16_HI:
10424 case R_PPC64_TPREL16_HA:
10425 case R_PPC64_TPREL16_DS:
10426 case R_PPC64_TPREL16_LO_DS:
10427 case R_PPC64_TPREL16_HIGHER:
10428 case R_PPC64_TPREL16_HIGHERA:
10429 case R_PPC64_TPREL16_HIGHEST:
10430 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10431 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10432 if (info->shared)
10433 /* The TPREL16 relocs shouldn't really be used in shared
10434 libs as they will result in DT_TEXTREL being set, but
10435 support them anyway. */
10436 goto dodyn;
10437 break;
10438
10439 case R_PPC64_DTPREL16:
10440 case R_PPC64_DTPREL16_LO:
10441 case R_PPC64_DTPREL16_HI:
10442 case R_PPC64_DTPREL16_HA:
10443 case R_PPC64_DTPREL16_DS:
10444 case R_PPC64_DTPREL16_LO_DS:
10445 case R_PPC64_DTPREL16_HIGHER:
10446 case R_PPC64_DTPREL16_HIGHERA:
10447 case R_PPC64_DTPREL16_HIGHEST:
10448 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10449 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10450 break;
10451
e515b051
AM		 10452 case R_PPC64_DTPMOD64:
10453 relocation = 1;
10454 addend = 0;
10455 goto dodyn;
10456
411e1bfb 10457 case R_PPC64_TPREL64:
e1918d23 10458 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10459 goto dodyn;
10460
10461 case R_PPC64_DTPREL64:
e1918d23 10462 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10463 /* Fall thru */
10464
65f38f15
AM		 10465 /* Relocations that may need to be propagated if this is a
10466 dynamic object. */
04c9666a 10467 case R_PPC64_REL30:
65f38f15
AM		 10468 case R_PPC64_REL32:
10469 case R_PPC64_REL64:
10470 case R_PPC64_ADDR14:
10471 case R_PPC64_ADDR14_BRNTAKEN:
10472 case R_PPC64_ADDR14_BRTAKEN:
10473 case R_PPC64_ADDR16:
10474 case R_PPC64_ADDR16_DS:
10475 case R_PPC64_ADDR16_HA:
10476 case R_PPC64_ADDR16_HI:
10477 case R_PPC64_ADDR16_HIGHER:
10478 case R_PPC64_ADDR16_HIGHERA:
10479 case R_PPC64_ADDR16_HIGHEST:
10480 case R_PPC64_ADDR16_HIGHESTA:
10481 case R_PPC64_ADDR16_LO:
10482 case R_PPC64_ADDR16_LO_DS:
10483 case R_PPC64_ADDR24:
65f38f15
AM		 10484 case R_PPC64_ADDR32:
10485 case R_PPC64_ADDR64:
10486 case R_PPC64_UADDR16:
10487 case R_PPC64_UADDR32:
10488 case R_PPC64_UADDR64:
ec338859
AM		 10489 /* r_symndx will be zero only for relocs against symbols
10490 from removed linkonce sections, or sections discarded by
10491 a linker script. */
411e1bfb 10492 dodyn:
5d1634d7
AM		 10493 if (r_symndx == 0)
10494 break;
10495 /* Fall thru. */
10496
0b13192e 10497 dodyn2:
5d1634d7 10498 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10499 break;
10500
41bd81ab
AM		 10501 if (NO_OPD_RELOCS && is_opd)
10502 break;
10503
65f38f15 10504 if ((info->shared
4e795f50 10505 && (h == NULL
039b3fef
AM		 10506 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10507 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10508 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10509 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10510 || (ELIMINATE_COPY_RELOCS
10511 && !info->shared
65f38f15 10512 && h != NULL
039b3fef 10513 && h->elf.dynindx != -1
f5385ebf
AM		 10514 && !h->elf.non_got_ref
10515 && h->elf.def_dynamic
10516 && !h->elf.def_regular))
65f38f15
AM		 10517 {
10518 Elf_Internal_Rela outrel;
b34976b6 10519 bfd_boolean skip, relocate;
65f38f15 10520 asection *sreloc;
947216bf 10521 bfd_byte *loc;
1cf1f670 10522 bfd_vma out_off;
65f38f15
AM		 10523
10524 /* When generating a dynamic object, these relocations
10525 are copied into the output file to be resolved at run
10526 time. */
10527
b34976b6
AM		 10528 skip = FALSE;
10529 relocate = FALSE;
65f38f15 10530
1cf1f670
AM		 10531 out_off = _bfd_elf_section_offset (output_bfd, info,
10532 input_section, rel->r_offset);
10533 if (out_off == (bfd_vma) -1)
b34976b6 10534 skip = TRUE;
1cf1f670 10535 else if (out_off == (bfd_vma) -2)
b34976b6 10536 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10537 out_off += (input_section->output_section->vma
10538 + input_section->output_offset);
10539 outrel.r_offset = out_off;
411e1bfb 10540 outrel.r_addend = rel->r_addend;
65f38f15 10541
1cf1f670
AM		 10542 /* Optimize unaligned reloc use. */
10543 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10544 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10545 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10546 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10547 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10548 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10549 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10550 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10551 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10552
65f38f15 10553 if (skip)
0bb2d96a 10554 memset (&outrel, 0, sizeof outrel);
039b3fef 10555 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10556 && !is_opd
10557 && r_type != R_PPC64_TOC)
039b3fef 10558 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10559 else
10560 {
41bd81ab
AM		 10561 /* This symbol is local, or marked to become local,
10562 or this is an opd section reloc which must point
10563 at a local function. */
65f38f15 10564 outrel.r_addend += relocation;
e86ce104 10565 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10566 {
3fad3c7c 10567 if (is_opd && h != NULL)
afbe61cf
AM		 10568 {
10569 /* Lie about opd entries. This case occurs
10570 when building shared libraries and we
10571 reference a function in another shared
3fad3c7c
AM		 10572 lib. The same thing happens for a weak
10573 definition in an application that's
10574 overridden by a strong definition in a
10575 shared lib. (I believe this is a generic
10576 bug in binutils handling of weak syms.)
10577 In these cases we won't use the opd
1e2f5b6e 10578 entry in this lib. */
b34976b6 10579 unresolved_reloc = FALSE;
afbe61cf 10580 }
65f38f15 10581 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10582
10583 /* We need to relocate .opd contents for ld.so.
10584 Prelink also wants simple and consistent rules
10585 for relocs. This make all RELATIVE relocs have
10586 *r_offset equal to r_addend. */
10587 relocate = TRUE;
65f38f15
AM		 10588 }
10589 else
10590 {
10591 long indx = 0;
10592
41bd81ab 10593 if (bfd_is_abs_section (sec))
65f38f15
AM		 10594 ;
10595 else if (sec == NULL || sec->owner == NULL)
10596 {
10597 bfd_set_error (bfd_error_bad_value);
b34976b6 10598 return FALSE;
65f38f15
AM		 10599 }
10600 else
10601 {
10602 asection *osec;
10603
10604 osec = sec->output_section;
10605 indx = elf_section_data (osec)->dynindx;
10606
10607 /* We are turning this relocation into one
10608 against a section symbol, so subtract out
10609 the output section's address but not the
10610 offset of the input section in the output
10611 section. */
10612 outrel.r_addend -= osec->vma;
10613 }
10614
10615 outrel.r_info = ELF64_R_INFO (indx, r_type);
10616 }
10617 }
10618
10619 sreloc = elf_section_data (input_section)->sreloc;
10620 if (sreloc == NULL)
10621 abort ();
10622
947216bf
AM		 10623 loc = sreloc->contents;
10624 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10625 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10626
10627 /* If this reloc is against an external symbol, it will
10628 be computed at runtime, so there's no need to do
81407a69
AM		 10629 anything now. However, for the sake of prelink ensure
10630 that the section contents are a known value. */
65f38f15 10631 if (! relocate)
81407a69
AM		 10632 {
10633 unresolved_reloc = FALSE;
10634 /* The value chosen here is quite arbitrary as ld.so
10635 ignores section contents except for the special
10636 case of .opd where the contents might be accessed
10637 before relocation. Choose zero, as that won't
10638 cause reloc overflow. */
10639 relocation = 0;
10640 addend = 0;
10641 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10642 to improve backward compatibility with older
10643 versions of ld. */
10644 if (r_type == R_PPC64_ADDR64)
10645 addend = outrel.r_addend;
10646 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10647 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10648 addend = (input_section->output_section->vma
10649 + input_section->output_offset
10650 + rel->r_offset);
81407a69 10651 }
65f38f15 10652 }
5bd4f169
AM		 10653 break;
10654
65f38f15
AM		 10655 case R_PPC64_COPY:
10656 case R_PPC64_GLOB_DAT:
10657 case R_PPC64_JMP_SLOT:
10658 case R_PPC64_RELATIVE:
10659 /* We shouldn't ever see these dynamic relocs in relocatable
10660 files. */
ae9a127f 10661 /* Fall through. */
65f38f15
AM		 10662
10663 case R_PPC64_PLTGOT16:
10664 case R_PPC64_PLTGOT16_DS:
10665 case R_PPC64_PLTGOT16_HA:
10666 case R_PPC64_PLTGOT16_HI:
10667 case R_PPC64_PLTGOT16_LO:
10668 case R_PPC64_PLTGOT16_LO_DS:
10669 case R_PPC64_PLTREL32:
10670 case R_PPC64_PLTREL64:
10671 /* These ones haven't been implemented yet. */
10672
10673 (*_bfd_error_handler)
d003868e
AM		 10674 (_("%B: relocation %s is not supported for symbol %s."),
10675 input_bfd,
4ce794b7 10676 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10677
10678 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10679 ret = FALSE;
5bd4f169 10680 continue;
65f38f15 10681 }
5bd4f169 10682
65f38f15
AM		 10683 /* Do any further special processing. */
10684 switch (r_type)
10685 {
10686 default:
10687 break;
10688
10689 case R_PPC64_ADDR16_HA:
10690 case R_PPC64_ADDR16_HIGHERA:
10691 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10692 case R_PPC64_GOT16_HA:
10693 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10694 case R_PPC64_PLT16_HA:
10695 case R_PPC64_TOC16_HA:
10696 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10697 case R_PPC64_TPREL16_HA:
10698 case R_PPC64_DTPREL16_HA:
10699 case R_PPC64_GOT_TLSGD16_HA:
10700 case R_PPC64_GOT_TLSLD16_HA:
10701 case R_PPC64_GOT_TPREL16_HA:
10702 case R_PPC64_GOT_DTPREL16_HA:
10703 case R_PPC64_TPREL16_HIGHER:
10704 case R_PPC64_TPREL16_HIGHERA:
10705 case R_PPC64_TPREL16_HIGHEST:
10706 case R_PPC64_TPREL16_HIGHESTA:
10707 case R_PPC64_DTPREL16_HIGHER:
10708 case R_PPC64_DTPREL16_HIGHERA:
10709 case R_PPC64_DTPREL16_HIGHEST:
10710 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10711 /* It's just possible that this symbol is a weak symbol
10712 that's not actually defined anywhere. In that case,
10713 'sec' would be NULL, and we should leave the symbol
10714 alone (it will be set to zero elsewhere in the link). */
10715 if (sec != NULL)
e515b051
AM		 10716 /* Add 0x10000 if sign bit in 0:15 is set.
10717 Bits 0:15 are not used. */
10718 addend += 0x8000;
65f38f15
AM		 10719 break;
10720
10721 case R_PPC64_ADDR16_DS:
10722 case R_PPC64_ADDR16_LO_DS:
10723 case R_PPC64_GOT16_DS:
10724 case R_PPC64_GOT16_LO_DS:
10725 case R_PPC64_PLT16_LO_DS:
10726 case R_PPC64_SECTOFF_DS:
10727 case R_PPC64_SECTOFF_LO_DS:
10728 case R_PPC64_TOC16_DS:
10729 case R_PPC64_TOC16_LO_DS:
10730 case R_PPC64_PLTGOT16_DS:
10731 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10732 case R_PPC64_GOT_TPREL16_DS:
10733 case R_PPC64_GOT_TPREL16_LO_DS:
10734 case R_PPC64_GOT_DTPREL16_DS:
10735 case R_PPC64_GOT_DTPREL16_LO_DS:
10736 case R_PPC64_TPREL16_DS:
10737 case R_PPC64_TPREL16_LO_DS:
10738 case R_PPC64_DTPREL16_DS:
10739 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10740 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10741 mask = 3;
10742 /* If this reloc is against an lq insn, then the value must be
10743 a multiple of 16. This is somewhat of a hack, but the
10744 "correct" way to do this by defining _DQ forms of all the
10745 _DS relocs bloats all reloc switches in this file. It
10746 doesn't seem to make much sense to use any of these relocs
10747 in data, so testing the insn should be safe. */
494dac0c 10748 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10749 mask = 15;
10750 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10751 {
10752 (*_bfd_error_handler)
d003868e
AM		 10753 (_("%B: error: relocation %s not a multiple of %d"),
10754 input_bfd,
4ce794b7 10755 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10756 mask + 1);
65f38f15 10757 bfd_set_error (bfd_error_bad_value);
b34976b6 10758 ret = FALSE;
65f38f15
AM		 10759 continue;
10760 }
10761 break;
5bd4f169
AM		 10762 }
10763
239e1f3a
AM		 10764 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10765 because such sections are not SEC_ALLOC and thus ld.so will
10766 not process them. */
65f38f15 10767 if (unresolved_reloc
239e1f3a 10768 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10769 && h->elf.def_dynamic))
9c07fe7c
AM		 10770 {
10771 (*_bfd_error_handler)
d003868e
AM		 10772 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10773 input_bfd,
10774 input_section,
9c07fe7c 10775 (long) rel->r_offset,
7b609f53 10776 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10777 h->elf.root.root.string);
b34976b6 10778 ret = FALSE;
9c07fe7c 10779 }
5bd4f169 10780
65f38f15 10781 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10782 input_bfd,
10783 input_section,
10784 contents,
411e1bfb 10785 rel->r_offset,
5bd4f169
AM		 10786 relocation,
10787 addend);
10788
ef60b7ff 10789 if (r != bfd_reloc_ok)
5bd4f169 10790 {
cd27b276
AM		 10791 if (sym_name == NULL)
10792 sym_name = "(null)";
10793 if (r == bfd_reloc_overflow)
5bd4f169 10794 {
cd27b276
AM		 10795 if (warned)
10796 continue;
10797 if (h != NULL
039b3fef 10798 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10799 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10800 {
10801 /* Assume this is a call protected by other code that
10802 detects the symbol is undefined. If this is the case,
10803 we can safely ignore the overflow. If not, the
10804 program is hosed anyway, and a little warning isn't
10805 going to help. */
10806
10807 continue;
10808 }
10809
ef60b7ff 10810 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10811 (info, (h ? &h->elf.root : NULL), sym_name,
10812 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10813 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10814 return FALSE;
ef60b7ff
AM		 10815 }
10816 else
10817 {
10818 (*_bfd_error_handler)
d003868e
AM		 10819 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10820 input_bfd,
10821 input_section,
7b609f53 10822 (long) rel->r_offset,
4ce794b7 10823 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10824 sym_name,
10825 (int) r);
b34976b6 10826 ret = FALSE;
ef60b7ff 10827 }
5bd4f169 10828 }
5bd4f169
AM		 10829 }
10830
645ea6a9
AM		 10831 /* If we're emitting relocations, then shortly after this function
10832 returns, reloc offsets and addends for this section will be
10833 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10834 file rather than the input. Save a copy of the relocs for
10835 opd_entry_value. */
10836 if (is_opd && info->emitrelocations)
10837 {
10838 bfd_size_type amt;
10839 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10840 rel = bfd_alloc (input_bfd, amt);
10841 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10842 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10843 if (rel == NULL)
10844 return FALSE;
10845 memcpy (rel, relocs, amt);
10846 }
5bd4f169
AM		 10847 return ret;
10848}
10849
754021d0
AM		 10850/* Adjust the value of any local symbols in opd sections. */
10851
10852static bfd_boolean
10853ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10854 const char *name ATTRIBUTE_UNUSED,
10855 Elf_Internal_Sym *elfsym,
10856 asection *input_sec,
10857 struct elf_link_hash_entry *h)
10858{
4025353c 10859 long *opd_adjust, adjust;
754021d0
AM		 10860 bfd_vma value;
10861
4025353c
AM		 10862 if (h != NULL)
10863 return TRUE;
10864
10865 opd_adjust = get_opd_info (input_sec);
10866 if (opd_adjust == NULL)
754021d0
AM		 10867 return TRUE;
10868
10869 value = elfsym->st_value - input_sec->output_offset;
10870 if (!info->relocatable)
10871 value -= input_sec->output_section->vma;
10872
3f764659 10873 adjust = opd_adjust[value / 8];
4025353c
AM		 10874 if (adjust == -1)
10875 elfsym->st_value = 0;
10876 else
10877 elfsym->st_value += adjust;
754021d0
AM		 10878 return TRUE;
10879}
10880
5bd4f169
AM		 10881/* Finish up dynamic symbol handling. We set the contents of various
10882 dynamic sections here. */
10883
b34976b6 10884static bfd_boolean
4ce794b7
AM		 10885ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10886 struct bfd_link_info *info,
10887 struct elf_link_hash_entry *h,
10888 Elf_Internal_Sym *sym)
5bd4f169 10889{
65f38f15 10890 struct ppc_link_hash_table *htab;
5bd4f169 10891 bfd *dynobj;
8387904d
AM		 10892 struct plt_entry *ent;
10893 Elf_Internal_Rela rela;
10894 bfd_byte *loc;
5bd4f169 10895
65f38f15
AM		 10896 htab = ppc_hash_table (info);
10897 dynobj = htab->elf.dynobj;
5bd4f169 10898
8387904d
AM		 10899 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10900 if (ent->plt.offset != (bfd_vma) -1)
10901 {
10902 /* This symbol has an entry in the procedure linkage
10903 table. Set it up. */
10904
10905 if (htab->plt == NULL
10906 || htab->relplt == NULL
10907 || htab->glink == NULL)
10908 abort ();
10909
10910 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10911 fill in the PLT entry. */
10912 rela.r_offset = (htab->plt->output_section->vma
10913 + htab->plt->output_offset
10914 + ent->plt.offset);
10915 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10916 rela.r_addend = ent->addend;
10917
10918 loc = htab->relplt->contents;
10919 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10920 * sizeof (Elf64_External_Rela));
10921 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10922 }
5bd4f169 10923
f5385ebf 10924 if (h->needs_copy)
5bd4f169 10925 {
5bd4f169 10926 Elf_Internal_Rela rela;
947216bf 10927 bfd_byte *loc;
5bd4f169 10928
65f38f15 10929 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10930
65f38f15
AM		 10931 if (h->dynindx == -1
10932 || (h->root.type != bfd_link_hash_defined
10933 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10934 || htab->relbss == NULL)
65f38f15 10935 abort ();
5bd4f169
AM		 10936
10937 rela.r_offset = (h->root.u.def.value
10938 + h->root.u.def.section->output_section->vma
10939 + h->root.u.def.section->output_offset);
10940 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10941 rela.r_addend = 0;
4ce794b7
AM		 10942 loc = htab->relbss->contents;
10943 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10944 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10945 }
10946
5bd4f169
AM		 10947 /* Mark some specially defined symbols as absolute. */
10948 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10949 sym->st_shndx = SHN_ABS;
10950
b34976b6 10951 return TRUE;
5bd4f169
AM		 10952}
10953
65f38f15
AM		 10954/* Used to decide how to sort relocs in an optimal manner for the
10955 dynamic linker, before writing them out. */
10956
10957static enum elf_reloc_type_class
4ce794b7 10958ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10959{
04c9666a 10960 enum elf_ppc64_reloc_type r_type;
a33d1f77 10961
4ce794b7 10962 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10963 switch (r_type)
65f38f15
AM		 10964 {
10965 case R_PPC64_RELATIVE:
10966 return reloc_class_relative;
10967 case R_PPC64_JMP_SLOT:
10968 return reloc_class_plt;
10969 case R_PPC64_COPY:
10970 return reloc_class_copy;
10971 default:
10972 return reloc_class_normal;
10973 }
10974}
10975
5bd4f169
AM		 10976/* Finish up the dynamic sections. */
10977
b34976b6 10978static bfd_boolean
4ce794b7
AM		 10979ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10980 struct bfd_link_info *info)
5bd4f169 10981{
65f38f15
AM		 10982 struct ppc_link_hash_table *htab;
10983 bfd *dynobj;
5bd4f169 10984 asection *sdyn;
5bd4f169 10985
65f38f15
AM		 10986 htab = ppc_hash_table (info);
10987 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10988 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10989
65f38f15 10990 if (htab->elf.dynamic_sections_created)
5bd4f169 10991 {
5bd4f169
AM		 10992 Elf64_External_Dyn *dyncon, *dynconend;
10993
4ce794b7 10994 if (sdyn == NULL || htab->got == NULL)
65f38f15 10995 abort ();
5bd4f169
AM		 10996
10997 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 10998 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 10999 for (; dyncon < dynconend; dyncon++)
11000 {
11001 Elf_Internal_Dyn dyn;
19397422 11002 asection *s;
5bd4f169
AM		 11003
11004 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11005
11006 switch (dyn.d_tag)
11007 {
65f38f15
AM		 11008 default:
11009 continue;
5bd4f169 11010
5d1634d7 11011 case DT_PPC64_GLINK:
4ce794b7 11012 s = htab->glink;
6348e046 11013 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11014 /* We stupidly defined DT_PPC64_GLINK to be the start
11015 of glink rather than the first entry point, which is
11016 what ld.so needs, and now have a bigger stub to
11017 support automatic multiple TOCs. */
11018 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11019 break;
11020
19397422
AM		 11021 case DT_PPC64_OPD:
11022 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11023 if (s == NULL)
11024 continue;
11025 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11026 break;
11027
11028 case DT_PPC64_OPDSZ:
11029 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11030 if (s == NULL)
11031 continue;
eea6121a 11032 dyn.d_un.d_val = s->size;
19397422
AM		 11033 break;
11034
65f38f15 11035 case DT_PLTGOT:
4ce794b7 11036 s = htab->plt;
6348e046 11037 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11038 break;
11039
11040 case DT_JMPREL:
4ce794b7 11041 s = htab->relplt;
6348e046 11042 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11043 break;
5bd4f169 11044
65f38f15 11045 case DT_PLTRELSZ:
eea6121a 11046 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11047 break;
11048
11049 case DT_RELASZ:
11050 /* Don't count procedure linkage table relocs in the
11051 overall reloc count. */
4ce794b7 11052 s = htab->relplt;
6348e046
AM		 11053 if (s == NULL)
11054 continue;
eea6121a 11055 dyn.d_un.d_val -= s->size;
6348e046
AM		 11056 break;
11057
11058 case DT_RELA:
11059 /* We may not be using the standard ELF linker script.
11060 If .rela.plt is the first .rela section, we adjust
11061 DT_RELA to not include it. */
4ce794b7 11062 s = htab->relplt;
6348e046
AM		 11063 if (s == NULL)
11064 continue;
11065 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11066 continue;
eea6121a 11067 dyn.d_un.d_ptr += s->size;
65f38f15 11068 break;
5bd4f169 11069 }
5bd4f169 11070
65f38f15 11071 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11072 }
5bd4f169
AM		 11073 }
11074
eea6121a 11075 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11076 {
11077 /* Fill in the first entry in the global offset table.
11078 We use it to hold the link-time TOCbase. */
11079 bfd_put_64 (output_bfd,
60ee0d4a 11080 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11081 htab->got->contents);
5d1634d7
AM		 11082
11083 /* Set .got entry size. */
4ce794b7 11084 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11085 }
11086
eea6121a 11087 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11088 {
11089 /* Set .plt entry size. */
4ce794b7 11090 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11091 = PLT_ENTRY_SIZE;
11092 }
11093
e717da7e 11094 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11095 since we didn't add them to DYNOBJ. We know dynobj is the first
11096 bfd. */
e717da7e
AM		 11097 while ((dynobj = dynobj->link_next) != NULL)
11098 {
11099 asection *s;
7b53ace3 11100
ee75fd95 11101 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11102 continue;
11103
e717da7e
AM		 11104 s = ppc64_elf_tdata (dynobj)->got;
11105 if (s != NULL
eea6121a 11106 && s->size != 0
e717da7e
AM		 11107 && s->output_section != bfd_abs_section_ptr
11108 && !bfd_set_section_contents (output_bfd, s->output_section,
11109 s->contents, s->output_offset,
eea6121a 11110 s->size))
e717da7e
AM		 11111 return FALSE;
11112 s = ppc64_elf_tdata (dynobj)->relgot;
11113 if (s != NULL
eea6121a 11114 && s->size != 0
e717da7e
AM		 11115 && s->output_section != bfd_abs_section_ptr
11116 && !bfd_set_section_contents (output_bfd, s->output_section,
11117 s->contents, s->output_offset,
eea6121a 11118 s->size))
e717da7e
AM		 11119 return FALSE;
11120 }
f6c52c13 11121
b34976b6 11122 return TRUE;
5bd4f169
AM		 11123}
11124
5bd4f169 11125#include "elf64-target.h"
GDB Binutils - Deliverables
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