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* elf-m10300.c (_bfd_mn10300_elf_adjust_dynamic_symbol): Warn on
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3eb128b2 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169
AM		 27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
04c9666a 33#include "elf/ppc64.h"
5d1634d7 34#include "elf64-ppc.h"
5bd4f169 35
805fc799 36static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 38static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 54static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 56
ad8e1ba5
AM		 57#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58#define TARGET_LITTLE_NAME "elf64-powerpcle"
59#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60#define TARGET_BIG_NAME "elf64-powerpc"
61#define ELF_ARCH bfd_arch_powerpc
62#define ELF_MACHINE_CODE EM_PPC64
63#define ELF_MAXPAGESIZE 0x10000
64#define elf_info_to_howto ppc64_elf_info_to_howto
65
66#define elf_backend_want_got_sym 0
67#define elf_backend_want_plt_sym 0
68#define elf_backend_plt_alignment 3
69#define elf_backend_plt_not_loaded 1
ad8e1ba5 70#define elf_backend_got_header_size 8
ad8e1ba5
AM		 71#define elf_backend_can_gc_sections 1
72#define elf_backend_can_refcount 1
73#define elf_backend_rela_normal 1
74
e717da7e 75#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 76#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 81#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 82
83#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 84#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 86#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 88#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d
AM		 89#define elf_backend_check_directives ppc64_elf_check_directives
90#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5
AM		 91#define elf_backend_check_relocs ppc64_elf_check_relocs
92#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95#define elf_backend_hide_symbol ppc64_elf_hide_symbol
96#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98#define elf_backend_relocate_section ppc64_elf_relocate_section
99#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 102#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 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 2119 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2120 if (type >= (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])))
2122 {
2123 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2124 abfd, (int) type);
2125 type = R_PPC64_NONE;
d0fb9a8d 2126 }
65f38f15 2127 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2128}
2129
04c9666a 2130/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2131
2132static bfd_reloc_status_type
4ce794b7
AM		 2133ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2134 void *data, asection *input_section,
2135 bfd *output_bfd, char **error_message)
5bd4f169 2136{
805fc799
AM		 2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2139 link time. */
2140 if (output_bfd != NULL)
cedb70c5 2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2142 input_section, output_bfd, error_message);
2143
2144 /* Adjust the addend for sign extension of the low 16 bits.
2145 We won't actually be using the low 16 bits, so trashing them
2146 doesn't matter. */
2147 reloc_entry->addend += 0x8000;
2148 return bfd_reloc_continue;
2149}
5bd4f169 2150
2441e016
AM		 2151static bfd_reloc_status_type
2152ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2153 void *data, asection *input_section,
2154 bfd *output_bfd, char **error_message)
2155{
2156 if (output_bfd != NULL)
2157 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2158 input_section, output_bfd, error_message);
2159
699733f6
AM		 2160 if (strcmp (symbol->section->name, ".opd") == 0
2161 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2162 {
2163 bfd_vma dest = opd_entry_value (symbol->section,
2164 symbol->value + reloc_entry->addend,
2165 NULL, NULL);
2166 if (dest != (bfd_vma) -1)
2167 reloc_entry->addend = dest - (symbol->value
2168 + symbol->section->output_section->vma
2169 + symbol->section->output_offset);
2170 }
2171 return bfd_reloc_continue;
2172}
2173
805fc799 2174static bfd_reloc_status_type
4ce794b7
AM		 2175ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2176 void *data, asection *input_section,
2177 bfd *output_bfd, char **error_message)
805fc799
AM		 2178{
2179 long insn;
04c9666a 2180 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2181 bfd_size_type octets;
2182 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2183 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2184
2185 /* If this is a relocatable link (output_bfd test tells us), just
2186 call the generic function. Any adjustment will be done at final
2187 link time. */
5bd4f169 2188 if (output_bfd != NULL)
cedb70c5 2189 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2190 input_section, output_bfd, error_message);
2191
2192 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2193 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2194 insn &= ~(0x01 << 21);
4ce794b7 2195 r_type = reloc_entry->howto->type;
805fc799
AM		 2196 if (r_type == R_PPC64_ADDR14_BRTAKEN
2197 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2198 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2199
2200 if (is_power4)
5bd4f169 2201 {
805fc799
AM		 2202 /* Set 'a' bit. This is 0b00010 in BO field for branch
2203 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2204 for branch on CTR insns (BO == 1a00t or 1a01t). */
2205 if ((insn & (0x14 << 21)) == (0x04 << 21))
2206 insn |= 0x02 << 21;
2207 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2208 insn |= 0x08 << 21;
2209 else
2441e016 2210 goto out;
5bd4f169 2211 }
805fc799
AM		 2212 else
2213 {
2214 bfd_vma target = 0;
2215 bfd_vma from;
5bd4f169 2216
805fc799
AM		 2217 if (!bfd_is_com_section (symbol->section))
2218 target = symbol->value;
2219 target += symbol->section->output_section->vma;
2220 target += symbol->section->output_offset;
2221 target += reloc_entry->addend;
5bd4f169 2222
805fc799
AM		 2223 from = (reloc_entry->address
2224 + input_section->output_offset
2225 + input_section->output_section->vma);
5bd4f169 2226
805fc799
AM		 2227 /* Invert 'y' bit if not the default. */
2228 if ((bfd_signed_vma) (target - from) < 0)
2229 insn ^= 0x01 << 21;
2230 }
4ce794b7 2231 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2232 out:
2233 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2234 input_section, output_bfd, error_message);
805fc799 2235}
5bd4f169 2236
805fc799 2237static bfd_reloc_status_type
4ce794b7
AM		 2238ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2239 void *data, asection *input_section,
2240 bfd *output_bfd, char **error_message)
805fc799
AM		 2241{
2242 /* If this is a relocatable link (output_bfd test tells us), just
2243 call the generic function. Any adjustment will be done at final
2244 link time. */
2245 if (output_bfd != NULL)
cedb70c5 2246 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2247 input_section, output_bfd, error_message);
5bd4f169 2248
805fc799
AM		 2249 /* Subtract the symbol section base address. */
2250 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2251 return bfd_reloc_continue;
2252}
2253
805fc799 2254static bfd_reloc_status_type
4ce794b7
AM		 2255ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
805fc799
AM		 2258{
2259 /* If this is a relocatable link (output_bfd test tells us), just
2260 call the generic function. Any adjustment will be done at final
2261 link time. */
2262 if (output_bfd != NULL)
cedb70c5 2263 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2264 input_section, output_bfd, error_message);
2265
2266 /* Subtract the symbol section base address. */
2267 reloc_entry->addend -= symbol->section->output_section->vma;
2268
2269 /* Adjust the addend for sign extension of the low 16 bits. */
2270 reloc_entry->addend += 0x8000;
2271 return bfd_reloc_continue;
2272}
2273
2274static bfd_reloc_status_type
4ce794b7
AM		 2275ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2276 void *data, asection *input_section,
2277 bfd *output_bfd, char **error_message)
805fc799
AM		 2278{
2279 bfd_vma TOCstart;
2280
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2283 link time. */
2284 if (output_bfd != NULL)
cedb70c5 2285 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2286 input_section, output_bfd, error_message);
2287
2288 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2289 if (TOCstart == 0)
2290 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2291
2292 /* Subtract the TOC base address. */
2293 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2294 return bfd_reloc_continue;
2295}
2296
2297static bfd_reloc_status_type
4ce794b7
AM		 2298ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2299 void *data, asection *input_section,
2300 bfd *output_bfd, char **error_message)
805fc799
AM		 2301{
2302 bfd_vma TOCstart;
2303
2304 /* If this is a relocatable link (output_bfd test tells us), just
2305 call the generic function. Any adjustment will be done at final
2306 link time. */
2307 if (output_bfd != NULL)
cedb70c5 2308 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2309 input_section, output_bfd, error_message);
2310
2311 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2312 if (TOCstart == 0)
2313 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2314
2315 /* Subtract the TOC base address. */
2316 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2317
2318 /* Adjust the addend for sign extension of the low 16 bits. */
2319 reloc_entry->addend += 0x8000;
2320 return bfd_reloc_continue;
2321}
2322
2323static bfd_reloc_status_type
4ce794b7
AM		 2324ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2325 void *data, asection *input_section,
2326 bfd *output_bfd, char **error_message)
805fc799
AM		 2327{
2328 bfd_vma TOCstart;
2329 bfd_size_type octets;
2330
2331 /* If this is a relocatable link (output_bfd test tells us), just
2332 call the generic function. Any adjustment will be done at final
2333 link time. */
2334 if (output_bfd != NULL)
cedb70c5 2335 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2336 input_section, output_bfd, error_message);
2337
2338 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2339 if (TOCstart == 0)
2340 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2341
2342 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2343 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2344 return bfd_reloc_ok;
2345}
2346
2347static bfd_reloc_status_type
4ce794b7
AM		 2348ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2349 void *data, asection *input_section,
2350 bfd *output_bfd, char **error_message)
805fc799
AM		 2351{
2352 /* If this is a relocatable link (output_bfd test tells us), just
2353 call the generic function. Any adjustment will be done at final
2354 link time. */
2355 if (output_bfd != NULL)
cedb70c5 2356 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2357 input_section, output_bfd, error_message);
2358
2359 if (error_message != NULL)
2360 {
2361 static char buf[60];
2362 sprintf (buf, "generic linker can't handle %s",
2363 reloc_entry->howto->name);
2364 *error_message = buf;
2365 }
2366 return bfd_reloc_dangerous;
2367}
2368
e717da7e
AM		 2369struct ppc64_elf_obj_tdata
2370{
2371 struct elf_obj_tdata elf;
2372
2373 /* Shortcuts to dynamic linker sections. */
2374 asection *got;
2375 asection *relgot;
2376
433817dd
AM		 2377 union {
2378 /* Used during garbage collection. We attach global symbols defined
2379 on removed .opd entries to this section so that the sym is removed. */
2380 asection *deleted_section;
2381
2382 /* Used when adding symbols. */
2383 bfd_boolean has_dotsym;
2384 } u;
81688140 2385
e717da7e
AM		 2386 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2387 sections means we potentially need one of these for each input bfd. */
2388 union {
2389 bfd_signed_vma refcount;
2390 bfd_vma offset;
2391 } tlsld_got;
8860955f
AM		 2392
2393 /* A copy of relocs before they are modified for --emit-relocs. */
2394 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2395};
2396
2397#define ppc64_elf_tdata(bfd) \
2398 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2399
2400#define ppc64_tlsld_got(bfd) \
2401 (&ppc64_elf_tdata (bfd)->tlsld_got)
2402
2403/* Override the generic function because we store some extras. */
2404
2405static bfd_boolean
2406ppc64_elf_mkobject (bfd *abfd)
2407{
2408 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2409 abfd->tdata.any = bfd_zalloc (abfd, amt);
2410 if (abfd->tdata.any == NULL)
2411 return FALSE;
2412 return TRUE;
2413}
2414
ee75fd95
AM		 2415/* Return 1 if target is one of ours. */
2416
7b53ace3 2417static bfd_boolean
ee75fd95 2418is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2419{
2420 extern const bfd_target bfd_elf64_powerpc_vec;
2421 extern const bfd_target bfd_elf64_powerpcle_vec;
2422
2423 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2424}
2425
feee612b
AM		 2426/* Fix bad default arch selected for a 64 bit input bfd when the
2427 default is 32 bit. */
2428
b34976b6 2429static bfd_boolean
4ce794b7 2430ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2431{
2432 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2433 {
2434 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2435
2436 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2437 {
2438 /* Relies on arch after 32 bit default being 64 bit default. */
2439 abfd->arch_info = abfd->arch_info->next;
2440 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2441 }
2442 }
b34976b6 2443 return TRUE;
feee612b
AM		 2444}
2445
d37c89e5
AM		 2446/* Support for core dump NOTE sections. */
2447
2448static bfd_boolean
2449ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2450{
eea6121a 2451 size_t offset, size;
d37c89e5
AM		 2452
2453 if (note->descsz != 504)
2454 return FALSE;
2455
2456 /* pr_cursig */
2457 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2458
2459 /* pr_pid */
2460 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2461
2462 /* pr_reg */
2463 offset = 112;
eea6121a 2464 size = 384;
d37c89e5
AM		 2465
2466 /* Make a ".reg/999" section. */
2467 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2468 size, note->descpos + offset);
d37c89e5
AM		 2469}
2470
2471static bfd_boolean
2472ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2473{
2474 if (note->descsz != 136)
2475 return FALSE;
2476
2477 elf_tdata (abfd)->core_program
2478 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2479 elf_tdata (abfd)->core_command
2480 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2481
2482 return TRUE;
2483}
2484
5bd4f169
AM		 2485/* Merge backend specific data from an object file to the output
2486 object file when linking. */
2f6d9989 2487
b34976b6 2488static bfd_boolean
4ce794b7 2489ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2490{
5bd4f169
AM		 2491 /* Check if we have the same endianess. */
2492 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2493 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2494 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2495 {
2496 const char *msg;
2497
2498 if (bfd_big_endian (ibfd))
d003868e 2499 msg = _("%B: compiled for a big endian system "
4ce794b7 2500 "and target is little endian");
5bd4f169 2501 else
d003868e 2502 msg = _("%B: compiled for a little endian system "
4ce794b7 2503 "and target is big endian");
5bd4f169 2504
d003868e 2505 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2506
2507 bfd_set_error (bfd_error_wrong_format);
b34976b6 2508 return FALSE;
5bd4f169
AM		 2509 }
2510
b34976b6 2511 return TRUE;
5bd4f169 2512}
f0abc2a1 2513
5d35169e
AM		 2514/* Add extra PPC sections. */
2515
b35d266b 2516static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958
L		 2517{
2518 { ".plt", 4, 0, SHT_NOBITS, 0 },
7dcb9820 2519 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
551b43fd 2520 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
7dcb9820
AM		 2521 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2523 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2524 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2525};
2526
f0abc2a1
AM		 2527struct _ppc64_elf_section_data
2528{
2529 struct bfd_elf_section_data elf;
411e1bfb
AM		 2530
2531 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2532 union
2533 {
411e1bfb 2534 /* Points to the function code section for local opd entries. */
f0abc2a1 2535 asection **func_sec;
411e1bfb 2536 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2537 long *adjust;
2538 } opd;
411e1bfb
AM		 2539
2540 /* An array for toc sections, indexed by offset/8.
2541 Specifies the relocation symbol index used at a given toc offset. */
2542 unsigned *t_symndx;
f0abc2a1
AM		 2543};
2544
2545#define ppc64_elf_section_data(sec) \
411e1bfb 2546 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2547
2548static bfd_boolean
4ce794b7 2549ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2550{
2551 struct _ppc64_elf_section_data *sdata;
2552 bfd_size_type amt = sizeof (*sdata);
2553
4ce794b7 2554 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2555 if (sdata == NULL)
2556 return FALSE;
4ce794b7 2557 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2558
2559 return _bfd_elf_new_section_hook (abfd, sec);
2560}
4025353c
AM		 2561
2562static void *
2563get_opd_info (asection * sec)
2564{
2565 if (sec != NULL
2566 && ppc64_elf_section_data (sec) != NULL
2567 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2568 return ppc64_elf_section_data (sec)->opd.adjust;
2569 return NULL;
2570}
90e3cdf2
JJ		 2571\f
2572/* Parameters for the qsort hook. */
2573static asection *synthetic_opd;
2574static bfd_boolean synthetic_relocatable;
2575
699733f6 2576/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2577
2578static int
2579compare_symbols (const void *ap, const void *bp)
2580{
2581 const asymbol *a = * (const asymbol **) ap;
2582 const asymbol *b = * (const asymbol **) bp;
2583
699733f6
AM		 2584 /* Section symbols first. */
2585 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2586 return -1;
699733f6 2587 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2588 return 1;
2589
699733f6 2590 /* then .opd symbols. */
90e3cdf2
JJ		 2591 if (a->section == synthetic_opd && b->section != synthetic_opd)
2592 return -1;
2593 if (a->section != synthetic_opd && b->section == synthetic_opd)
2594 return 1;
2595
699733f6 2596 /* then other code symbols. */
90e3cdf2
JJ		 2597 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2598 == (SEC_CODE | SEC_ALLOC)
2599 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2600 != (SEC_CODE | SEC_ALLOC))
2601 return -1;
2602
2603 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2604 != (SEC_CODE | SEC_ALLOC)
2605 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2606 == (SEC_CODE | SEC_ALLOC))
2607 return 1;
2608
2609 if (synthetic_relocatable)
2610 {
2611 if (a->section->id < b->section->id)
2612 return -1;
2613
2614 if (a->section->id > b->section->id)
2615 return 1;
2616 }
2617
2618 if (a->value + a->section->vma < b->value + b->section->vma)
2619 return -1;
2620
2621 if (a->value + a->section->vma > b->value + b->section->vma)
2622 return 1;
2623
2624 return 0;
2625}
2626
699733f6 2627/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2628
699733f6
AM		 2629static asymbol *
2630sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2631{
699733f6 2632 long mid;
90e3cdf2 2633
699733f6
AM		 2634 if (id == -1)
2635 {
2636 while (lo < hi)
2637 {
2638 mid = (lo + hi) >> 1;
2639 if (syms[mid]->value + syms[mid]->section->vma < value)
2640 lo = mid + 1;
2641 else if (syms[mid]->value + syms[mid]->section->vma > value)
2642 hi = mid;
2643 else
2644 return syms[mid];
2645 }
2646 }
2647 else
2648 {
2649 while (lo < hi)
2650 {
2651 mid = (lo + hi) >> 1;
2652 if (syms[mid]->section->id < id)
2653 lo = mid + 1;
2654 else if (syms[mid]->section->id > id)
2655 hi = mid;
2656 else if (syms[mid]->value < value)
2657 lo = mid + 1;
2658 else if (syms[mid]->value > value)
2659 hi = mid;
2660 else
2661 return syms[mid];
2662 }
2663 }
2664 return NULL;
90e3cdf2
JJ		 2665}
2666
699733f6
AM		 2667/* Create synthetic symbols, effectively restoring "dot-symbol" function
2668 entry syms. */
90e3cdf2
JJ		 2669
2670static long
a7535cf3
AM		 2671ppc64_elf_get_synthetic_symtab (bfd *abfd,
2672 long static_count, asymbol **static_syms,
2673 long dyn_count, asymbol **dyn_syms,
c9727e01 2674 asymbol **ret)
90e3cdf2
JJ		 2675{
2676 asymbol *s;
699733f6
AM		 2677 long i;
2678 long count;
90e3cdf2 2679 char *names;
a7535cf3 2680 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2681 asection *opd;
90e3cdf2 2682 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2683 asymbol **syms;
90e3cdf2
JJ		 2684
2685 *ret = NULL;
2686
2687 opd = bfd_get_section_by_name (abfd, ".opd");
2688 if (opd == NULL)
2689 return 0;
2690
a7535cf3 2691 symcount = static_count;
c9727e01 2692 if (!relocatable)
a7535cf3 2693 symcount += dyn_count;
90e3cdf2 2694 if (symcount == 0)
c9727e01 2695 return 0;
90e3cdf2 2696
a7535cf3
AM		 2697 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2698 if (syms == NULL)
7356fed5 2699 return -1;
a7535cf3
AM		 2700
2701 if (!relocatable && static_count != 0 && dyn_count != 0)
2702 {
2703 /* Use both symbol tables. */
2704 memcpy (syms, static_syms, static_count * sizeof (*syms));
2705 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2706 }
2707 else if (!relocatable && static_count == 0)
2708 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2709 else
2710 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2711
90e3cdf2
JJ		 2712 synthetic_opd = opd;
2713 synthetic_relocatable = relocatable;
595da8c5 2714 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2715
c9727e01
AM		 2716 if (!relocatable && symcount > 1)
2717 {
2718 long j;
2719 /* Trim duplicate syms, since we may have merged the normal and
2720 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2721 different values, so trim any with the same value. */
c9727e01
AM		 2722 for (i = 1, j = 1; i < symcount; ++i)
2723 if (syms[i - 1]->value + syms[i - 1]->section->vma
2724 != syms[i]->value + syms[i]->section->vma)
2725 syms[j++] = syms[i];
2726 symcount = j;
2727 }
2728
699733f6
AM		 2729 i = 0;
2730 if (syms[i]->section == opd)
2731 ++i;
2732 codesecsym = i;
90e3cdf2 2733
699733f6
AM		 2734 for (; i < symcount; ++i)
2735 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2736 != (SEC_CODE | SEC_ALLOC))
2737 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2738 break;
2739 codesecsymend = i;
90e3cdf2 2740
699733f6
AM		 2741 for (; i < symcount; ++i)
2742 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2743 break;
2744 secsymend = i;
90e3cdf2 2745
699733f6
AM		 2746 for (; i < symcount; ++i)
2747 if (syms[i]->section != opd)
2748 break;
2749 opdsymend = i;
90e3cdf2 2750
699733f6
AM		 2751 for (; i < symcount; ++i)
2752 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2753 != (SEC_CODE | SEC_ALLOC))
2754 break;
2755 symcount = i;
2756
c9727e01 2757 count = 0;
699733f6 2758 if (opdsymend == secsymend)
c9727e01 2759 goto done;
90e3cdf2 2760
699733f6 2761 if (relocatable)
90e3cdf2 2762 {
699733f6
AM		 2763 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2764 arelent *r;
2765 size_t size;
2766 long relcount;
90e3cdf2 2767
699733f6 2768 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2769 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2770 if (relcount == 0)
c9727e01 2771 goto done;
90e3cdf2 2772
7356fed5
AM		 2773 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2774 {
2775 count = -1;
2776 goto done;
2777 }
2778
699733f6 2779 size = 0;
595da8c5 2780 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2781 {
2782 asymbol *sym;
90e3cdf2 2783
595da8c5 2784 while (r < opd->relocation + relcount
699733f6
AM		 2785 && r->address < syms[i]->value + opd->vma)
2786 ++r;
90e3cdf2 2787
595da8c5 2788 if (r == opd->relocation + relcount)
699733f6 2789 break;
90e3cdf2 2790
699733f6
AM		 2791 if (r->address != syms[i]->value + opd->vma)
2792 continue;
90e3cdf2 2793
699733f6
AM		 2794 if (r->howto->type != R_PPC64_ADDR64)
2795 continue;
90e3cdf2 2796
699733f6
AM		 2797 sym = *r->sym_ptr_ptr;
2798 if (!sym_exists_at (syms, opdsymend, symcount,
2799 sym->section->id, sym->value + r->addend))
2800 {
2801 ++count;
2802 size += sizeof (asymbol);
2803 size += strlen (syms[i]->name) + 2;
2804 }
2805 }
90e3cdf2 2806
699733f6
AM		 2807 s = *ret = bfd_malloc (size);
2808 if (s == NULL)
2809 {
7356fed5 2810 count = -1;
c9727e01 2811 goto done;
699733f6 2812 }
90e3cdf2 2813
699733f6 2814 names = (char *) (s + count);
90e3cdf2 2815
595da8c5 2816 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2817 {
699733f6 2818 asymbol *sym;
90e3cdf2 2819
595da8c5 2820 while (r < opd->relocation + relcount
699733f6
AM		 2821 && r->address < syms[i]->value + opd->vma)
2822 ++r;
90e3cdf2 2823
595da8c5 2824 if (r == opd->relocation + relcount)
699733f6
AM		 2825 break;
2826
2827 if (r->address != syms[i]->value + opd->vma)
2828 continue;
2829
2830 if (r->howto->type != R_PPC64_ADDR64)
2831 continue;
90e3cdf2 2832
699733f6
AM		 2833 sym = *r->sym_ptr_ptr;
2834 if (!sym_exists_at (syms, opdsymend, symcount,
2835 sym->section->id, sym->value + r->addend))
2836 {
2837 size_t len;
2838
2839 *s = *syms[i];
2840 s->section = sym->section;
2841 s->value = sym->value + r->addend;
2842 s->name = names;
2843 *names++ = '.';
2844 len = strlen (syms[i]->name);
2845 memcpy (names, syms[i]->name, len + 1);
2846 names += len + 1;
2847 s++;
2848 }
2849 }
2850 }
2851 else
90e3cdf2 2852 {
699733f6
AM		 2853 bfd_byte *contents;
2854 size_t size;
90e3cdf2 2855
699733f6
AM		 2856 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2857 {
2858 if (contents)
c9727e01
AM		 2859 {
2860 free_contents_and_exit:
2861 free (contents);
2862 }
7356fed5 2863 count = -1;
c9727e01 2864 goto done;
699733f6 2865 }
90e3cdf2 2866
699733f6
AM		 2867 size = 0;
2868 for (i = secsymend; i < opdsymend; ++i)
2869 {
2870 bfd_vma ent;
90e3cdf2 2871
699733f6
AM		 2872 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2873 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2874 {
2875 ++count;
2876 size += sizeof (asymbol);
2877 size += strlen (syms[i]->name) + 2;
2878 }
2879 }
90e3cdf2 2880
699733f6
AM		 2881 s = *ret = bfd_malloc (size);
2882 if (s == NULL)
7356fed5 2883 goto free_contents_and_exit;
90e3cdf2 2884
699733f6 2885 names = (char *) (s + count);
90e3cdf2 2886
699733f6 2887 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2888 {
699733f6 2889 bfd_vma ent;
90e3cdf2 2890
699733f6
AM		 2891 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2892 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2893 {
c9727e01 2894 long lo, hi;
699733f6 2895 size_t len;
c9727e01 2896 asection *sec = abfd->sections;
90e3cdf2 2897
699733f6
AM		 2898 *s = *syms[i];
2899 lo = codesecsym;
2900 hi = codesecsymend;
2901 while (lo < hi)
2902 {
c9727e01 2903 long mid = (lo + hi) >> 1;
699733f6
AM		 2904 if (syms[mid]->section->vma < ent)
2905 lo = mid + 1;
2906 else if (syms[mid]->section->vma > ent)
2907 hi = mid;
2908 else
c9727e01
AM		 2909 {
2910 sec = syms[mid]->section;
2911 break;
2912 }
699733f6
AM		 2913 }
2914
c9727e01 2915 if (lo >= hi && lo > codesecsym)
699733f6 2916 sec = syms[lo - 1]->section;
699733f6
AM		 2917
2918 for (; sec != NULL; sec = sec->next)
2919 {
2920 if (sec->vma > ent)
2921 break;
2922 if ((sec->flags & SEC_ALLOC) == 0
2923 || (sec->flags & SEC_LOAD) == 0)
2924 break;
2925 if ((sec->flags & SEC_CODE) != 0)
2926 s->section = sec;
2927 }
2928 s->value = ent - s->section->vma;
2929 s->name = names;
2930 *names++ = '.';
2931 len = strlen (syms[i]->name);
2932 memcpy (names, syms[i]->name, len + 1);
2933 names += len + 1;
2934 s++;
90e3cdf2 2935 }
90e3cdf2 2936 }
699733f6 2937 free (contents);
90e3cdf2
JJ		 2938 }
2939
c9727e01 2940 done:
a7535cf3 2941 free (syms);
90e3cdf2
JJ		 2942 return count;
2943}
5bd4f169 2944\f
65f38f15
AM		 2945/* The following functions are specific to the ELF linker, while
2946 functions above are used generally. Those named ppc64_elf_* are
2947 called by the main ELF linker code. They appear in this file more
2948 or less in the order in which they are called. eg.
2949 ppc64_elf_check_relocs is called early in the link process,
2950 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2951 called.
2952
2953 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2954 functions have both a function code symbol and a function descriptor
2955 symbol. A call to foo in a relocatable object file looks like:
2956
2957 . .text
2958 . x:
2959 . bl .foo
2960 . nop
2961
2962 The function definition in another object file might be:
2963
2964 . .section .opd
2965 . foo: .quad .foo
2966 . .quad .TOC.@tocbase
2967 . .quad 0
2968 .
2969 . .text
2970 . .foo: blr
2971
2972 When the linker resolves the call during a static link, the branch
2973 unsurprisingly just goes to .foo and the .opd information is unused.
2974 If the function definition is in a shared library, things are a little
2975 different: The call goes via a plt call stub, the opd information gets
2976 copied to the plt, and the linker patches the nop.
2977
2978 . x:
2979 . bl .foo_stub
2980 . ld 2,40(1)
2981 .
2982 .
2983 . .foo_stub:
2984 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 2985 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 2986 . std 2,40(1) # this is the general idea
2987 . ld 11,0(12)
2988 . ld 2,8(12)
2989 . mtctr 11
2990 . ld 11,16(12)
2991 . bctr
2992 .
2993 . .section .plt
2994 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2995
2996 The "reloc ()" notation is supposed to indicate that the linker emits
2997 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2998 copying.
2999
3000 What are the difficulties here? Well, firstly, the relocations
3001 examined by the linker in check_relocs are against the function code
3002 sym .foo, while the dynamic relocation in the plt is emitted against
3003 the function descriptor symbol, foo. Somewhere along the line, we need
3004 to carefully copy dynamic link information from one symbol to the other.
3005 Secondly, the generic part of the elf linker will make .foo a dynamic
3006 symbol as is normal for most other backends. We need foo dynamic
3007 instead, at least for an application final link. However, when
3008 creating a shared library containing foo, we need to have both symbols
3009 dynamic so that references to .foo are satisfied during the early
3010 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3011 definition from some other object, eg. a static library.
3012
3013 Update: As of August 2004, we support a new convention. Function
3014 calls may use the function descriptor symbol, ie. "bl foo". This
3015 behaves exactly as "bl .foo". */
65f38f15
AM		 3016
3017/* The linker needs to keep track of the number of relocs that it
3018 decides to copy as dynamic relocs in check_relocs for each symbol.
3019 This is so that it can later discard them if they are found to be
3020 unnecessary. We store the information in a field extending the
3021 regular ELF linker hash table. */
3022
3023struct ppc_dyn_relocs
3024{
3025 struct ppc_dyn_relocs *next;
3026
3027 /* The input section of the reloc. */
3028 asection *sec;
3029
3030 /* Total number of relocs copied for the input section. */
3031 bfd_size_type count;
3032
3033 /* Number of pc-relative relocs copied for the input section. */
3034 bfd_size_type pc_count;
3035};
3036
411e1bfb
AM		 3037/* Track GOT entries needed for a given symbol. We might need more
3038 than one got entry per symbol. */
3039struct got_entry
3040{
3041 struct got_entry *next;
3042
e7b938ca 3043 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3044 bfd_vma addend;
3045
e717da7e
AM		 3046 /* Unlike other ELF targets, we use separate GOT entries for the same
3047 symbol referenced from different input files. This is to support
3048 automatic multiple TOC/GOT sections, where the TOC base can vary
3049 from one input file to another.
3050
3051 Point to the BFD owning this GOT entry. */
3052 bfd *owner;
3053
3054 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3055 TLS_TPREL or TLS_DTPREL for tls entries. */
3056 char tls_type;
3057
e7b938ca 3058 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3059 union
3060 {
3061 bfd_signed_vma refcount;
3062 bfd_vma offset;
3063 } got;
411e1bfb
AM		 3064};
3065
3066/* The same for PLT. */
3067struct plt_entry
3068{
3069 struct plt_entry *next;
3070
3071 bfd_vma addend;
3072
3073 union
3074 {
3075 bfd_signed_vma refcount;
3076 bfd_vma offset;
3077 } plt;
3078};
3079
65f38f15 3080/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3081 selects those that must be copied when linking a shared library,
3082 even when the symbol is local. */
65f38f15 3083
411e1bfb 3084#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3085 ((RTYPE) != R_PPC64_REL32 \
3086 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3087 && (RTYPE) != R_PPC64_REL30)
65f38f15 3088
f4656909
AM		 3089/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3090 copying dynamic variables from a shared lib into an app's dynbss
3091 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3092 shared lib. With code that gcc generates, it's vital that this be
3093 enabled; In the PowerPC64 ABI, the address of a function is actually
3094 the address of a function descriptor, which resides in the .opd
3095 section. gcc uses the descriptor directly rather than going via the
3096 GOT as some other ABI's do, which means that initialized function
3097 pointers must reference the descriptor. Thus, a function pointer
3098 initialized to the address of a function in a shared library will
3099 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3100 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3101 presents a problem as a plt entry for that function is also
3102 initialized from the function descriptor symbol and the copy reloc
3103 may not be initialized first. */
a23b6845 3104#define ELIMINATE_COPY_RELOCS 1
f4656909 3105
721956f4
AM		 3106/* Section name for stubs is the associated section name plus this
3107 string. */
3108#define STUB_SUFFIX ".stub"
3109
3110/* Linker stubs.
3111 ppc_stub_long_branch:
3112 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3113 destination, but a 24 bit branch in a stub section will reach.
3114 . b dest
3115
3116 ppc_stub_plt_branch:
3117 Similar to the above, but a 24 bit branch in the stub section won't
3118 reach its destination.
87e226ce
AM		 3119 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3121 . mtctr %r11
3122 . bctr
3123
3124 ppc_stub_plt_call:
2c66dc6c
AM		 3125 Used to call a function in a shared library. If it so happens that
3126 the plt entry referenced crosses a 64k boundary, then an extra
3127 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3128 xxx+16 as appropriate.
87e226ce 3129 . addis %r12,%r2,xxx@toc@ha
721956f4 3130 . std %r2,40(%r1)
87e226ce
AM		 3131 . ld %r11,xxx+0@toc@l(%r12)
3132 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3133 . mtctr %r11
87e226ce 3134 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3135 . bctr
ad8e1ba5
AM		 3136
3137 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3138 code to adjust the value and save r2 to support multiple toc sections.
3139 A ppc_stub_long_branch with an r2 offset looks like:
3140 . std %r2,40(%r1)
3141 . addis %r2,%r2,off@ha
3142 . addi %r2,%r2,off@l
3143 . b dest
3144
3145 A ppc_stub_plt_branch with an r2 offset looks like:
3146 . std %r2,40(%r1)
3147 . addis %r12,%r2,xxx@toc@ha
3148 . ld %r11,xxx@toc@l(%r12)
3149 . addis %r2,%r2,off@ha
3150 . addi %r2,%r2,off@l
3151 . mtctr %r11
3152 . bctr
721956f4
AM		 3153*/
3154
3155enum ppc_stub_type {
3156 ppc_stub_none,
3157 ppc_stub_long_branch,
ad8e1ba5 3158 ppc_stub_long_branch_r2off,
721956f4 3159 ppc_stub_plt_branch,
ad8e1ba5 3160 ppc_stub_plt_branch_r2off,
721956f4
AM		 3161 ppc_stub_plt_call
3162};
3163
3164struct ppc_stub_hash_entry {
3165
3166 /* Base hash table entry structure. */
3167 struct bfd_hash_entry root;
3168
ad8e1ba5
AM		 3169 enum ppc_stub_type stub_type;
3170
721956f4
AM		 3171 /* The stub section. */
3172 asection *stub_sec;
3173
3174 /* Offset within stub_sec of the beginning of this stub. */
3175 bfd_vma stub_offset;
3176
3177 /* Given the symbol's value and its section we can determine its final
3178 value when building the stubs (so the stub knows where to jump. */
3179 bfd_vma target_value;
3180 asection *target_section;
3181
721956f4
AM		 3182 /* The symbol table entry, if any, that this was derived from. */
3183 struct ppc_link_hash_entry *h;
3184
411e1bfb
AM		 3185 /* And the reloc addend that this was derived from. */
3186 bfd_vma addend;
3187
721956f4
AM		 3188 /* Where this stub is being called from, or, in the case of combined
3189 stub sections, the first input section in the group. */
3190 asection *id_sec;
3191};
3192
3193struct ppc_branch_hash_entry {
3194
3195 /* Base hash table entry structure. */
3196 struct bfd_hash_entry root;
3197
c456f082 3198 /* Offset within branch lookup table. */
721956f4
AM		 3199 unsigned int offset;
3200
3201 /* Generation marker. */
3202 unsigned int iter;
3203};
65f38f15
AM		 3204
3205struct ppc_link_hash_entry
3206{
3207 struct elf_link_hash_entry elf;
3208
721956f4
AM		 3209 /* A pointer to the most recently used stub hash entry against this
3210 symbol. */
3211 struct ppc_stub_hash_entry *stub_cache;
3212
65f38f15
AM		 3213 /* Track dynamic relocs copied for this symbol. */
3214 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3215
721956f4 3216 /* Link between function code and descriptor symbols. */
34814b9f 3217 struct ppc_link_hash_entry *oh;
721956f4 3218
e86ce104
AM		 3219 /* Flag function code and descriptor symbols. */
3220 unsigned int is_func:1;
3221 unsigned int is_func_descriptor:1;
908b32fc 3222 unsigned int fake:1;
411e1bfb 3223
c5614fa4
AM		 3224 /* Whether global opd/toc sym has been adjusted or not.
3225 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3226 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3227 unsigned int adjust_done:1;
3228
99877b66
AM		 3229 /* Set if we twiddled this symbol to weak at some stage. */
3230 unsigned int was_undefined:1;
3231
411e1bfb 3232 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3233 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3234 corresponding relocs are encountered during check_relocs.
3235 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3236 indicate the corresponding GOT entry type is not needed.
3237 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3238 a TPREL one. We use a separate flag rather than setting TPREL
3239 just for convenience in distinguishing the two cases. */
3240#define TLS_GD 1 /* GD reloc. */
3241#define TLS_LD 2 /* LD reloc. */
3242#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3243#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3244#define TLS_TLS 16 /* Any TLS reloc. */
3245#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3246#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3247 char tls_mask;
65f38f15
AM		 3248};
3249
3250/* ppc64 ELF linker hash table. */
3251
3252struct ppc_link_hash_table
3253{
3254 struct elf_link_hash_table elf;
3255
721956f4
AM		 3256 /* The stub hash table. */
3257 struct bfd_hash_table stub_hash_table;
3258
3259 /* Another hash table for plt_branch stubs. */
3260 struct bfd_hash_table branch_hash_table;
3261
3262 /* Linker stub bfd. */
3263 bfd *stub_bfd;
3264
3265 /* Linker call-backs. */
4ce794b7
AM		 3266 asection * (*add_stub_section) (const char *, asection *);
3267 void (*layout_sections_again) (void);
721956f4
AM		 3268
3269 /* Array to keep track of which stub sections have been created, and
3270 information on stub grouping. */
3271 struct map_stub {
3272 /* This is the section to which stubs in the group will be attached. */
3273 asection *link_sec;
3274 /* The stub section. */
3275 asection *stub_sec;
ad8e1ba5
AM		 3276 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3277 bfd_vma toc_off;
721956f4
AM		 3278 } *stub_group;
3279
ad8e1ba5
AM		 3280 /* Temp used when calculating TOC pointers. */
3281 bfd_vma toc_curr;
3282
8f3bab57
AM		 3283 /* Highest input section id. */
3284 int top_id;
3285
734b6cf9
AM		 3286 /* Highest output section index. */
3287 int top_index;
3288
3289 /* List of input sections for each output section. */
3290 asection **input_list;
721956f4 3291
65f38f15 3292 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3293 asection *got;
4ce794b7
AM		 3294 asection *plt;
3295 asection *relplt;
3296 asection *dynbss;
3297 asection *relbss;
3298 asection *glink;
82bd7b59 3299 asection *sfpr;
4ce794b7
AM		 3300 asection *brlt;
3301 asection *relbrlt;
ec338859 3302
8387904d
AM		 3303 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3304 struct ppc_link_hash_entry *tls_get_addr;
3305 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3306
9b5ecbd0
AM		 3307 /* Statistics. */
3308 unsigned long stub_count[ppc_stub_plt_call];
3309
ee75fd95
AM		 3310 /* Number of stubs against global syms. */
3311 unsigned long stub_globals;
3312
ad8e1ba5 3313 /* Set if we should emit symbols for stubs. */
99877b66 3314 unsigned int emit_stub_syms:1;
ad8e1ba5 3315
4c52953f
AM		 3316 /* Support for multiple toc sections. */
3317 unsigned int no_multi_toc:1;
3318 unsigned int multi_toc_needed:1;
3319
5d1634d7 3320 /* Set on error. */
99877b66 3321 unsigned int stub_error:1;
721956f4
AM		 3322
3323 /* Flag set when small branches are detected. Used to
3324 select suitable defaults for the stub group size. */
99877b66
AM		 3325 unsigned int has_14bit_branch:1;
3326
3327 /* Temp used by ppc64_elf_check_directives. */
3328 unsigned int twiddled_syms:1;
721956f4
AM		 3329
3330 /* Incremented every time we size stubs. */
3331 unsigned int stub_iteration;
5d1634d7 3332
ec338859
AM		 3333 /* Small local sym to section mapping cache. */
3334 struct sym_sec_cache sym_sec;
65f38f15
AM		 3335};
3336
4c52953f
AM		 3337/* Rename some of the generic section flags to better document how they
3338 are used here. */
3339#define has_toc_reloc has_gp_reloc
3340#define makes_toc_func_call need_finalize_relax
3341#define call_check_in_progress reloc_done
3342
65f38f15
AM		 3343/* Get the ppc64 ELF linker hash table from a link_info structure. */
3344
3345#define ppc_hash_table(p) \
3346 ((struct ppc_link_hash_table *) ((p)->hash))
3347
721956f4
AM		 3348#define ppc_stub_hash_lookup(table, string, create, copy) \
3349 ((struct ppc_stub_hash_entry *) \
3350 bfd_hash_lookup ((table), (string), (create), (copy)))
3351
3352#define ppc_branch_hash_lookup(table, string, create, copy) \
3353 ((struct ppc_branch_hash_entry *) \
3354 bfd_hash_lookup ((table), (string), (create), (copy)))
3355
3356/* Create an entry in the stub hash table. */
3357
3358static struct bfd_hash_entry *
4ce794b7
AM		 3359stub_hash_newfunc (struct bfd_hash_entry *entry,
3360 struct bfd_hash_table *table,
3361 const char *string)
721956f4
AM		 3362{
3363 /* Allocate the structure if it has not already been allocated by a
3364 subclass. */
3365 if (entry == NULL)
3366 {
3367 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3368 if (entry == NULL)
3369 return entry;
3370 }
3371
3372 /* Call the allocation method of the superclass. */
3373 entry = bfd_hash_newfunc (entry, table, string);
3374 if (entry != NULL)
3375 {
3376 struct ppc_stub_hash_entry *eh;
3377
3378 /* Initialize the local fields. */
3379 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3380 eh->stub_type = ppc_stub_none;
721956f4
AM		 3381 eh->stub_sec = NULL;
3382 eh->stub_offset = 0;
3383 eh->target_value = 0;
3384 eh->target_section = NULL;
721956f4
AM		 3385 eh->h = NULL;
3386 eh->id_sec = NULL;
3387 }
3388
3389 return entry;
3390}
3391
3392/* Create an entry in the branch hash table. */
3393
3394static struct bfd_hash_entry *
4ce794b7
AM		 3395branch_hash_newfunc (struct bfd_hash_entry *entry,
3396 struct bfd_hash_table *table,
3397 const char *string)
721956f4
AM		 3398{
3399 /* Allocate the structure if it has not already been allocated by a
3400 subclass. */
3401 if (entry == NULL)
3402 {
3403 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3404 if (entry == NULL)
3405 return entry;
3406 }
3407
3408 /* Call the allocation method of the superclass. */
3409 entry = bfd_hash_newfunc (entry, table, string);
3410 if (entry != NULL)
3411 {
3412 struct ppc_branch_hash_entry *eh;
3413
3414 /* Initialize the local fields. */
3415 eh = (struct ppc_branch_hash_entry *) entry;
3416 eh->offset = 0;
3417 eh->iter = 0;
3418 }
3419
3420 return entry;
3421}
3422
65f38f15
AM		 3423/* Create an entry in a ppc64 ELF linker hash table. */
3424
3425static struct bfd_hash_entry *
4ce794b7
AM		 3426link_hash_newfunc (struct bfd_hash_entry *entry,
3427 struct bfd_hash_table *table,
3428 const char *string)
65f38f15
AM		 3429{
3430 /* Allocate the structure if it has not already been allocated by a
3431 subclass. */
3432 if (entry == NULL)
3433 {
3434 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3435 if (entry == NULL)
3436 return entry;
3437 }
3438
3439 /* Call the allocation method of the superclass. */
3440 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3441 if (entry != NULL)
3442 {
3443 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3444
908b32fc
AM		 3445 memset (&eh->stub_cache, 0,
3446 (sizeof (struct ppc_link_hash_entry)
3447 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3448 }
3449
3450 return entry;
3451}
3452
3453/* Create a ppc64 ELF linker hash table. */
3454
3455static struct bfd_link_hash_table *
4ce794b7 3456ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3457{
3458 struct ppc_link_hash_table *htab;
3459 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3460
4ce794b7 3461 htab = bfd_zmalloc (amt);
65f38f15
AM		 3462 if (htab == NULL)
3463 return NULL;
3464
3465 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3466 {
e2d34d7d 3467 free (htab);
65f38f15
AM		 3468 return NULL;
3469 }
3470
721956f4
AM		 3471 /* Init the stub hash table too. */
3472 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3473 return NULL;
3474
3475 /* And the branch hash table. */
3476 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3477 return NULL;
3478
3254fd24
AM		 3479 /* Initializing two fields of the union is just cosmetic. We really
3480 only care about glist, but when compiled on a 32-bit host the
3481 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3482 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3483 htab->elf.init_got_refcount.refcount = 0;
3484 htab->elf.init_got_refcount.glist = NULL;
3485 htab->elf.init_plt_refcount.refcount = 0;
3486 htab->elf.init_plt_refcount.glist = NULL;
3487 htab->elf.init_got_offset.offset = 0;
3488 htab->elf.init_got_offset.glist = NULL;
3489 htab->elf.init_plt_offset.offset = 0;
3490 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3491
65f38f15
AM		 3492 return &htab->elf.root;
3493}
3494
721956f4
AM		 3495/* Free the derived linker hash table. */
3496
3497static void
4ce794b7 3498ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3499{
3500 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3501
3502 bfd_hash_table_free (&ret->stub_hash_table);
3503 bfd_hash_table_free (&ret->branch_hash_table);
3504 _bfd_generic_link_hash_table_free (hash);
3505}
3506
e717da7e
AM		 3507/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3508
3509void
3510ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3511{
3512 struct ppc_link_hash_table *htab;
3513
3514 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3515
3516/* Always hook our dynamic sections into the first bfd, which is the
3517 linker created stub bfd. This ensures that the GOT header is at
3518 the start of the output TOC section. */
3519 htab = ppc_hash_table (info);
3520 htab->stub_bfd = abfd;
3521 htab->elf.dynobj = abfd;
3522}
3523
721956f4
AM		 3524/* Build a name for an entry in the stub hash table. */
3525
3526static char *
4ce794b7
AM		 3527ppc_stub_name (const asection *input_section,
3528 const asection *sym_sec,
3529 const struct ppc_link_hash_entry *h,
3530 const Elf_Internal_Rela *rel)
721956f4
AM		 3531{
3532 char *stub_name;
3533 bfd_size_type len;
3534
3535 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3536 offsets from a sym as a branch target? In fact, we could
3537 probably assume the addend is always zero. */
3538 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3539
3540 if (h)
3541 {
3542 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3543 stub_name = bfd_malloc (len);
46de2a7c
AM		 3544 if (stub_name == NULL)
3545 return stub_name;
3546
3547 sprintf (stub_name, "%08x.%s+%x",
3548 input_section->id & 0xffffffff,
3549 h->elf.root.root.string,
3550 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3551 }
3552 else
3553 {
ad8e1ba5 3554 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3555 stub_name = bfd_malloc (len);
46de2a7c
AM		 3556 if (stub_name == NULL)
3557 return stub_name;
3558
3559 sprintf (stub_name, "%08x.%x:%x+%x",
3560 input_section->id & 0xffffffff,
3561 sym_sec->id & 0xffffffff,
3562 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3563 (int) rel->r_addend & 0xffffffff);
721956f4 3564 }
ee75fd95
AM		 3565 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3566 stub_name[len - 2] = 0;
721956f4
AM		 3567 return stub_name;
3568}
3569
3570/* Look up an entry in the stub hash. Stub entries are cached because
3571 creating the stub name takes a bit of time. */
3572
3573static struct ppc_stub_hash_entry *
4ce794b7
AM		 3574ppc_get_stub_entry (const asection *input_section,
3575 const asection *sym_sec,
039b3fef 3576 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3577 const Elf_Internal_Rela *rel,
3578 struct ppc_link_hash_table *htab)
721956f4
AM		 3579{
3580 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3581 const asection *id_sec;
3582
3583 /* If this input section is part of a group of sections sharing one
3584 stub section, then use the id of the first section in the group.
3585 Stub names need to include a section id, as there may well be
3586 more than one stub used to reach say, printf, and we need to
3587 distinguish between them. */
3588 id_sec = htab->stub_group[input_section->id].link_sec;
3589
3590 if (h != NULL && h->stub_cache != NULL
3591 && h->stub_cache->h == h
3592 && h->stub_cache->id_sec == id_sec)
3593 {
3594 stub_entry = h->stub_cache;
3595 }
3596 else
3597 {
3598 char *stub_name;
3599
3600 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3601 if (stub_name == NULL)
3602 return NULL;
3603
3604 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3605 stub_name, FALSE, FALSE);
721956f4
AM		 3606 if (h != NULL)
3607 h->stub_cache = stub_entry;
3608
3609 free (stub_name);
3610 }
3611
3612 return stub_entry;
3613}
3614
3615/* Add a new stub entry to the stub hash. Not all fields of the new
3616 stub entry are initialised. */
3617
3618static struct ppc_stub_hash_entry *
4ce794b7
AM		 3619ppc_add_stub (const char *stub_name,
3620 asection *section,
3621 struct ppc_link_hash_table *htab)
721956f4
AM		 3622{
3623 asection *link_sec;
3624 asection *stub_sec;
3625 struct ppc_stub_hash_entry *stub_entry;
3626
3627 link_sec = htab->stub_group[section->id].link_sec;
3628 stub_sec = htab->stub_group[section->id].stub_sec;
3629 if (stub_sec == NULL)
3630 {
3631 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3632 if (stub_sec == NULL)
3633 {
d4c88bbb 3634 size_t namelen;
721956f4
AM		 3635 bfd_size_type len;
3636 char *s_name;
3637
d4c88bbb
AM		 3638 namelen = strlen (link_sec->name);
3639 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3640 s_name = bfd_alloc (htab->stub_bfd, len);
3641 if (s_name == NULL)
3642 return NULL;
3643
d4c88bbb
AM		 3644 memcpy (s_name, link_sec->name, namelen);
3645 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3646 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3647 if (stub_sec == NULL)
3648 return NULL;
3649 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3650 }
3651 htab->stub_group[section->id].stub_sec = stub_sec;
3652 }
3653
3654 /* Enter this entry into the linker stub hash table. */
3655 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3656 TRUE, FALSE);
721956f4
AM		 3657 if (stub_entry == NULL)
3658 {
d003868e
AM		 3659 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3660 section->owner, stub_name);
721956f4
AM		 3661 return NULL;
3662 }
3663
3664 stub_entry->stub_sec = stub_sec;
3665 stub_entry->stub_offset = 0;
3666 stub_entry->id_sec = link_sec;
3667 return stub_entry;
3668}
3669
82bd7b59
AM		 3670/* Create sections for linker generated code. */
3671
b34976b6 3672static bfd_boolean
4ce794b7 3673create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3674{
3675 struct ppc_link_hash_table *htab;
3676 flagword flags;
3677
3678 htab = ppc_hash_table (info);
3679
3680 /* Create .sfpr for code to save and restore fp regs. */
3681 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3682 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3683 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3684 flags);
82bd7b59 3685 if (htab->sfpr == NULL
82bd7b59 3686 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3687 return FALSE;
82bd7b59 3688
721956f4 3689 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3690 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3691 flags);
4ce794b7 3692 if (htab->glink == NULL
4ce794b7 3693 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3694 return FALSE;
82bd7b59 3695
c456f082
AM		 3696 /* Create branch lookup table for plt_branch stubs. */
3697 if (info->shared)
3698 {
3699 flags = (SEC_ALLOC | SEC_LOAD
3700 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3701 htab->brlt
3702 = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt",
3703 flags);
3704 }
3705 else
3706 {
3707 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3708 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3709 htab->brlt
3710 = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags);
3711 }
3712
4ce794b7 3713 if (htab->brlt == NULL
4ce794b7 3714 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3715 return FALSE;
721956f4 3716
c456f082 3717 if (info->shared)
721956f4
AM		 3718 {
3719 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3720 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
c456f082
AM		 3721 htab->relbrlt
3722 = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt",
3723 flags);
721956f4 3724 }
c456f082
AM		 3725 else if (info->emitrelocations)
3726 {
3727 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3728 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3729 htab->relbrlt
3730 = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt",
3731 flags);
3732 }
3733 else
3734 return TRUE;
3735
3736 if (!htab->relbrlt
3737 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3738 return FALSE;
3739
b34976b6 3740 return TRUE;
82bd7b59
AM		 3741}
3742
e717da7e
AM		 3743/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3744 not already done. */
65f38f15 3745
b34976b6 3746static bfd_boolean
e717da7e 3747create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3748{
e717da7e
AM		 3749 asection *got, *relgot;
3750 flagword flags;
3751 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3752
4ce794b7 3753 if (!htab->got)
e717da7e
AM		 3754 {
3755 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3756 return FALSE;
3757
3758 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3759 if (!htab->got)
3760 abort ();
3761 }
3762
3763 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3764 | SEC_LINKER_CREATED);
3765
c456f082 3766 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3767 if (!got
e717da7e
AM		 3768 || !bfd_set_section_alignment (abfd, got, 3))
3769 return FALSE;
65f38f15 3770
c456f082
AM		 3771 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3772 flags | SEC_READONLY);
e717da7e 3773 if (!relgot
e717da7e 3774 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3775 return FALSE;
e717da7e
AM		 3776
3777 ppc64_elf_tdata (abfd)->got = got;
3778 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3779 return TRUE;
65f38f15 3780}
5bd4f169 3781
82bd7b59 3782/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3783
b34976b6 3784static bfd_boolean
4ce794b7 3785ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3786{
65f38f15 3787 struct ppc_link_hash_table *htab;
5bd4f169 3788
65f38f15 3789 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3790 return FALSE;
65f38f15 3791
e717da7e
AM		 3792 htab = ppc_hash_table (info);
3793 if (!htab->got)
3794 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3795 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3796 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3797 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3798 if (!info->shared)
4ce794b7 3799 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3800
e717da7e 3801 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3802 || (!info->shared && !htab->relbss))
65f38f15
AM		 3803 abort ();
3804
b34976b6 3805 return TRUE;
5bd4f169
AM		 3806}
3807
40d16e0b
AM		 3808/* Merge PLT info on FROM with that on TO. */
3809
3810static void
3811move_plt_plist (struct ppc_link_hash_entry *from,
3812 struct ppc_link_hash_entry *to)
3813{
3814 if (from->elf.plt.plist != NULL)
3815 {
3816 if (to->elf.plt.plist != NULL)
3817 {
3818 struct plt_entry **entp;
3819 struct plt_entry *ent;
3820
3821 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3822 {
3823 struct plt_entry *dent;
3824
3825 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3826 if (dent->addend == ent->addend)
3827 {
3828 dent->plt.refcount += ent->plt.refcount;
3829 *entp = ent->next;
3830 break;
3831 }
3832 if (dent == NULL)
3833 entp = &ent->next;
3834 }
3835 *entp = to->elf.plt.plist;
3836 }
3837
3838 to->elf.plt.plist = from->elf.plt.plist;
3839 from->elf.plt.plist = NULL;
3840 }
3841}
3842
65f38f15
AM		 3843/* Copy the extra info we tack onto an elf_link_hash_entry. */
3844
3845static void
9c5bfbb7
AM		 3846ppc64_elf_copy_indirect_symbol
3847 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3848 struct elf_link_hash_entry *dir,
3849 struct elf_link_hash_entry *ind)
65f38f15
AM		 3850{
3851 struct ppc_link_hash_entry *edir, *eind;
3852
3853 edir = (struct ppc_link_hash_entry *) dir;
3854 eind = (struct ppc_link_hash_entry *) ind;
3855
411e1bfb 3856 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3857 if (eind->dyn_relocs != NULL)
65f38f15 3858 {
bbd7ec4a
AM		 3859 if (edir->dyn_relocs != NULL)
3860 {
3861 struct ppc_dyn_relocs **pp;
3862 struct ppc_dyn_relocs *p;
3863
411e1bfb 3864 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3865 abort ();
3866
3867 /* Add reloc counts against the weak sym to the strong sym
3868 list. Merge any entries against the same section. */
3869 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3870 {
3871 struct ppc_dyn_relocs *q;
3872
3873 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3874 if (q->sec == p->sec)
3875 {
3876 q->pc_count += p->pc_count;
3877 q->count += p->count;
3878 *pp = p->next;
3879 break;
3880 }
3881 if (q == NULL)
3882 pp = &p->next;
3883 }
3884 *pp = edir->dyn_relocs;
3885 }
3886
65f38f15
AM		 3887 edir->dyn_relocs = eind->dyn_relocs;
3888 eind->dyn_relocs = NULL;
3889 }
65f38f15 3890
6349e628
AM		 3891 edir->is_func |= eind->is_func;
3892 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3893 edir->tls_mask |= eind->tls_mask;
6349e628 3894
81848ca0 3895 /* If called to transfer flags for a weakdef during processing
f5385ebf 3896 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3897 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3898 if (!(ELIMINATE_COPY_RELOCS
3899 && eind->elf.root.type != bfd_link_hash_indirect
3900 && edir->elf.dynamic_adjusted))
3901 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3902
f5385ebf
AM		 3903 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3904 edir->elf.ref_regular |= eind->elf.ref_regular;
3905 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3906 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3907
3908 /* If we were called to copy over info for a weak sym, that's all. */
3909 if (eind->elf.root.type != bfd_link_hash_indirect)
3910 return;
3911
81848ca0
AM		 3912 /* Copy over got entries that we may have already seen to the
3913 symbol which just became indirect. */
411e1bfb
AM		 3914 if (eind->elf.got.glist != NULL)
3915 {
3916 if (edir->elf.got.glist != NULL)
3917 {
3918 struct got_entry **entp;
3919 struct got_entry *ent;
3920
3921 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3922 {
3923 struct got_entry *dent;
3924
3925 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3926 if (dent->addend == ent->addend
e717da7e 3927 && dent->owner == ent->owner
411e1bfb
AM		 3928 && dent->tls_type == ent->tls_type)
3929 {
3930 dent->got.refcount += ent->got.refcount;
3931 *entp = ent->next;
3932 break;
3933 }
3934 if (dent == NULL)
3935 entp = &ent->next;
3936 }
3937 *entp = edir->elf.got.glist;
3938 }
3939
3940 edir->elf.got.glist = eind->elf.got.glist;
3941 eind->elf.got.glist = NULL;
3942 }
3943
3944 /* And plt entries. */
40d16e0b 3945 move_plt_plist (eind, edir);
411e1bfb 3946
411e1bfb
AM		 3947 if (edir->elf.dynindx == -1)
3948 {
3949 edir->elf.dynindx = eind->elf.dynindx;
3950 edir->elf.dynstr_index = eind->elf.dynstr_index;
3951 eind->elf.dynindx = -1;
3952 eind->elf.dynstr_index = 0;
3953 }
3954 else
3955 BFD_ASSERT (eind->elf.dynindx == -1);
3956}
3957
8387904d
AM		 3958/* Find the function descriptor hash entry from the given function code
3959 hash entry FH. Link the entries via their OH fields. */
3960
3961static struct ppc_link_hash_entry *
3962get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3963{
3964 struct ppc_link_hash_entry *fdh = fh->oh;
3965
3966 if (fdh == NULL)
3967 {
3968 const char *fd_name = fh->elf.root.root.string + 1;
3969
3970 fdh = (struct ppc_link_hash_entry *)
3971 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3972 if (fdh != NULL)
3973 {
3974 fdh->is_func_descriptor = 1;
3975 fdh->oh = fh;
3976 fh->is_func = 1;
3977 fh->oh = fdh;
3978 }
3979 }
3980
3981 return fdh;
3982}
3983
bb700d78
AM		 3984/* Make a fake function descriptor sym for the code sym FH. */
3985
3986static struct ppc_link_hash_entry *
3987make_fdh (struct bfd_link_info *info,
908b32fc 3988 struct ppc_link_hash_entry *fh)
bb700d78
AM		 3989{
3990 bfd *abfd;
3991 asymbol *newsym;
3992 struct bfd_link_hash_entry *bh;
3993 struct ppc_link_hash_entry *fdh;
3994
3995 abfd = fh->elf.root.u.undef.abfd;
3996 newsym = bfd_make_empty_symbol (abfd);
3997 newsym->name = fh->elf.root.root.string + 1;
3998 newsym->section = bfd_und_section_ptr;
3999 newsym->value = 0;
908b32fc 4000 newsym->flags = BSF_WEAK;
bb700d78
AM		 4001
4002 bh = NULL;
4003 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4004 newsym->flags, newsym->section,
4005 newsym->value, NULL, FALSE, FALSE,
4006 &bh))
4007 return NULL;
4008
4009 fdh = (struct ppc_link_hash_entry *) bh;
4010 fdh->elf.non_elf = 0;
908b32fc
AM		 4011 fdh->fake = 1;
4012 fdh->is_func_descriptor = 1;
4013 fdh->oh = fh;
4014 fh->is_func = 1;
4015 fh->oh = fdh;
bb700d78
AM		 4016 return fdh;
4017}
4018
8387904d
AM		 4019/* Hacks to support old ABI code.
4020 When making function calls, old ABI code references function entry
4021 points (dot symbols), while new ABI code references the function
4022 descriptor symbol. We need to make any combination of reference and
4023 definition work together, without breaking archive linking.
4024
4025 For a defined function "foo" and an undefined call to "bar":
4026 An old object defines "foo" and ".foo", references ".bar" (possibly
4027 "bar" too).
4028 A new object defines "foo" and references "bar".
4029
4030 A new object thus has no problem with its undefined symbols being
4031 satisfied by definitions in an old object. On the other hand, the
4032 old object won't have ".bar" satisfied by a new object. */
4033
4034/* Fix function descriptor symbols defined in .opd sections to be
4035 function type. */
555cd476
AM		 4036
4037static bfd_boolean
433817dd 4038ppc64_elf_add_symbol_hook (bfd *ibfd,
555cd476
AM		 4039 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4040 Elf_Internal_Sym *isym,
433817dd 4041 const char **name,
555cd476
AM		 4042 flagword *flags ATTRIBUTE_UNUSED,
4043 asection **sec,
4044 bfd_vma *value ATTRIBUTE_UNUSED)
4045{
8843416a
AM		 4046 if (*sec != NULL
4047 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4048 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd
AM		 4049
4050 if ((*name)[0] == '.'
4051 && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
4052 && ELF_ST_TYPE (isym->st_info) < STT_SECTION
4053 && is_ppc64_elf_target (ibfd->xvec))
4054 ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
4055
555cd476
AM		 4056 return TRUE;
4057}
4058
8387904d 4059/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4060 inclusion of a new ABI object archive that defines "bar".
4061 NAME is a symbol defined in an archive. Return a symbol in the hash
4062 table that might be satisfied by the archive symbols. */
8387904d
AM		 4063
4064static struct elf_link_hash_entry *
4065ppc64_elf_archive_symbol_lookup (bfd *abfd,
4066 struct bfd_link_info *info,
4067 const char *name)
4068{
4069 struct elf_link_hash_entry *h;
4070 char *dot_name;
4071 size_t len;
4072
4073 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4074 if (h != NULL
4075 /* Don't return this sym if it is a fake function descriptor
4076 created by add_symbol_adjust. */
4077 && !(h->root.type == bfd_link_hash_undefweak
4078 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4079 return h;
4080
4081 if (name[0] == '.')
4082 return h;
4083
4084 len = strlen (name);
4085 dot_name = bfd_alloc (abfd, len + 2);
4086 if (dot_name == NULL)
4087 return (struct elf_link_hash_entry *) 0 - 1;
4088 dot_name[0] = '.';
4089 memcpy (dot_name + 1, name, len + 1);
4090 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4091 bfd_release (abfd, dot_name);
4092 return h;
4093}
4094
4095/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4096 new ABI object defines "bar". Well, at least, undefined dot symbols
4097 are made weak. This stops later archive searches from including an
4098 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4099 prevents the linker complaining about undefined symbols.
4100 We also check and correct mismatched symbol visibility here. The
4101 most restrictive visibility of the function descriptor and the
4102 function entry symbol is used. */
8387904d 4103
bb700d78
AM		 4104struct add_symbol_adjust_data
4105{
4106 struct bfd_link_info *info;
4107 bfd_boolean ok;
4108};
4109
8387904d
AM		 4110static bfd_boolean
4111add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4112{
bb700d78 4113 struct add_symbol_adjust_data *data;
8387904d 4114 struct ppc_link_hash_table *htab;
99877b66 4115 struct ppc_link_hash_entry *eh;
8387904d
AM		 4116 struct ppc_link_hash_entry *fdh;
4117
4118 if (h->root.type == bfd_link_hash_indirect)
4119 return TRUE;
4120
4121 if (h->root.type == bfd_link_hash_warning)
4122 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4123
35b0ce59 4124 if (h->root.root.string[0] != '.')
8387904d
AM		 4125 return TRUE;
4126
bb700d78
AM		 4127 data = inf;
4128 htab = ppc_hash_table (data->info);
99877b66
AM		 4129 eh = (struct ppc_link_hash_entry *) h;
4130 fdh = get_fdh (eh, htab);
bb700d78 4131 if (fdh == NULL
c4f68ce3 4132 && !data->info->relocatable
bb700d78
AM		 4133 && (eh->elf.root.type == bfd_link_hash_undefined
4134 || eh->elf.root.type == bfd_link_hash_undefweak)
4135 && eh->elf.ref_regular)
4136 {
4137 /* Make an undefweak function descriptor sym, which is enough to
4138 pull in an --as-needed shared lib, but won't cause link
4139 errors. Archives are handled elsewhere. */
908b32fc 4140 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4141 if (fdh == NULL)
4142 data->ok = FALSE;
4143 else
4144 fdh->elf.ref_regular = 1;
4145 }
e87d886e 4146 else if (fdh != NULL)
8387904d 4147 {
35b0ce59
AM		 4148 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4149 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4150 if (entry_vis < descr_vis)
4151 fdh->elf.other += entry_vis - descr_vis;
4152 else if (entry_vis > descr_vis)
4153 eh->elf.other += descr_vis - entry_vis;
4154
e87d886e
AM		 4155 if ((fdh->elf.root.type == bfd_link_hash_defined
4156 || fdh->elf.root.type == bfd_link_hash_defweak)
4157 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4158 {
4159 eh->elf.root.type = bfd_link_hash_undefweak;
4160 eh->was_undefined = 1;
4161 htab->twiddled_syms = 1;
4162 }
8387904d 4163 }
99877b66 4164
8387904d
AM		 4165 return TRUE;
4166}
4167
4168static bfd_boolean
433817dd 4169ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
8387904d 4170{
99877b66 4171 struct ppc_link_hash_table *htab;
bb700d78 4172 struct add_symbol_adjust_data data;
99877b66 4173
433817dd
AM		 4174 if (!is_ppc64_elf_target (abfd->xvec))
4175 return TRUE;
4176
4177 if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
4178 return TRUE;
4179 ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
4180
99877b66 4181 htab = ppc_hash_table (info);
ee75fd95 4182 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4183 return TRUE;
4184
bb700d78
AM		 4185 data.info = info;
4186 data.ok = TRUE;
4187 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4188
4189 /* We need to fix the undefs list for any syms we have twiddled to
4190 undef_weak. */
4191 if (htab->twiddled_syms)
4192 {
77cfaee6 4193 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4194 htab->twiddled_syms = 0;
4195 }
bb700d78 4196 return data.ok;
8387904d
AM		 4197}
4198
411e1bfb 4199static bfd_boolean
4ce794b7
AM		 4200update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4201 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4202{
4203 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4204 char *local_got_tls_masks;
411e1bfb
AM		 4205
4206 if (local_got_ents == NULL)
4207 {
4208 bfd_size_type size = symtab_hdr->sh_info;
4209
e7b938ca 4210 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4211 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4212 if (local_got_ents == NULL)
4213 return FALSE;
4214 elf_local_got_ents (abfd) = local_got_ents;
4215 }
4216
4217 if ((tls_type & TLS_EXPLICIT) == 0)
4218 {
4219 struct got_entry *ent;
4220
4221 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4222 if (ent->addend == r_addend
4223 && ent->owner == abfd
4224 && ent->tls_type == tls_type)
411e1bfb
AM		 4225 break;
4226 if (ent == NULL)
4227 {
4228 bfd_size_type amt = sizeof (*ent);
4ce794b7 4229 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4230 if (ent == NULL)
4231 return FALSE;
4232 ent->next = local_got_ents[r_symndx];
4233 ent->addend = r_addend;
e717da7e 4234 ent->owner = abfd;
411e1bfb
AM		 4235 ent->tls_type = tls_type;
4236 ent->got.refcount = 0;
4237 local_got_ents[r_symndx] = ent;
4238 }
4239 ent->got.refcount += 1;
4240 }
4241
e7b938ca
AM		 4242 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4243 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4244 return TRUE;
65f38f15
AM		 4245}
4246
411e1bfb 4247static bfd_boolean
4ce794b7 4248update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4249{
411e1bfb 4250 struct plt_entry *ent;
1e2f5b6e 4251
411e1bfb
AM		 4252 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4253 if (ent->addend == addend)
4254 break;
4255 if (ent == NULL)
1e2f5b6e 4256 {
411e1bfb 4257 bfd_size_type amt = sizeof (*ent);
4ce794b7 4258 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4259 if (ent == NULL)
4260 return FALSE;
4261 ent->next = eh->elf.plt.plist;
4262 ent->addend = addend;
4263 ent->plt.refcount = 0;
4264 eh->elf.plt.plist = ent;
1e2f5b6e 4265 }
411e1bfb 4266 ent->plt.refcount += 1;
f5385ebf 4267 eh->elf.needs_plt = 1;
93f3fa99
AM		 4268 if (eh->elf.root.root.string[0] == '.'
4269 && eh->elf.root.root.string[1] != '\0')
4270 eh->is_func = 1;
b34976b6 4271 return TRUE;
1e2f5b6e
AM		 4272}
4273
5bd4f169 4274/* Look through the relocs for a section during the first phase, and
65f38f15 4275 calculate needed space in the global offset table, procedure
5d1634d7 4276 linkage table, and dynamic reloc sections. */
5bd4f169 4277
b34976b6 4278static bfd_boolean
4ce794b7
AM		 4279ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4280 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4281{
65f38f15 4282 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4283 Elf_Internal_Shdr *symtab_hdr;
4284 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4285 const Elf_Internal_Rela *rel;
4286 const Elf_Internal_Rela *rel_end;
5bd4f169 4287 asection *sreloc;
1e2f5b6e 4288 asection **opd_sym_map;
5bd4f169 4289
1049f94e 4290 if (info->relocatable)
b34976b6 4291 return TRUE;
5bd4f169 4292
680a3378
AM		 4293 /* Don't do anything special with non-loaded, non-alloced sections.
4294 In particular, any relocs in such sections should not affect GOT
4295 and PLT reference counting (ie. we don't allow them to create GOT
4296 or PLT entries), there's no possibility or desire to optimize TLS
4297 relocs, and there's not much point in propagating relocs to shared
4298 libs that the dynamic linker won't relocate. */
4299 if ((sec->flags & SEC_ALLOC) == 0)
4300 return TRUE;
4301
65f38f15 4302 htab = ppc_hash_table (info);
5bd4f169 4303 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4304
4305 sym_hashes = elf_sym_hashes (abfd);
4306 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4307 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4308 - symtab_hdr->sh_info);
5bd4f169
AM		 4309
4310 sreloc = NULL;
1e2f5b6e
AM		 4311 opd_sym_map = NULL;
4312 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4313 {
4314 /* Garbage collection needs some extra help with .opd sections.
4315 We don't want to necessarily keep everything referenced by
4316 relocs in .opd, as that would keep all functions. Instead,
4317 if we reference an .opd symbol (a function descriptor), we
4318 want to keep the function code symbol's section. This is
4319 easy for global symbols, but for local syms we need to keep
4320 information about the associated function section. Later, if
4321 edit_opd deletes entries, we'll use this array to adjust
4322 local syms in .opd. */
4323 union opd_info {
4324 asection *func_section;
4325 long entry_adjust;
4326 };
4327 bfd_size_type amt;
4328
3f764659 4329 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4330 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4331 if (opd_sym_map == NULL)
b34976b6 4332 return FALSE;
f0abc2a1 4333 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4334 }
5bd4f169 4335
82bd7b59
AM		 4336 if (htab->sfpr == NULL
4337 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4338 return FALSE;
82bd7b59 4339
5bd4f169
AM		 4340 rel_end = relocs + sec->reloc_count;
4341 for (rel = relocs; rel < rel_end; rel++)
4342 {
4343 unsigned long r_symndx;
4344 struct elf_link_hash_entry *h;
04c9666a 4345 enum elf_ppc64_reloc_type r_type;
411e1bfb 4346 int tls_type = 0;
5bd4f169
AM		 4347
4348 r_symndx = ELF64_R_SYM (rel->r_info);
4349 if (r_symndx < symtab_hdr->sh_info)
4350 h = NULL;
4351 else
973a3492
L		 4352 {
4353 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4354 while (h->root.type == bfd_link_hash_indirect
4355 || h->root.type == bfd_link_hash_warning)
4356 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4357 }
5bd4f169 4358
4ce794b7 4359 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4360 switch (r_type)
5bd4f169 4361 {
411e1bfb
AM		 4362 case R_PPC64_GOT_TLSLD16:
4363 case R_PPC64_GOT_TLSLD16_LO:
4364 case R_PPC64_GOT_TLSLD16_HI:
4365 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4366 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4367 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4368 goto dogottls;
4369
4370 case R_PPC64_GOT_TLSGD16:
4371 case R_PPC64_GOT_TLSGD16_LO:
4372 case R_PPC64_GOT_TLSGD16_HI:
4373 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4374 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4375 goto dogottls;
4376
4377 case R_PPC64_GOT_TPREL16_DS:
4378 case R_PPC64_GOT_TPREL16_LO_DS:
4379 case R_PPC64_GOT_TPREL16_HI:
4380 case R_PPC64_GOT_TPREL16_HA:
4381 if (info->shared)
4382 info->flags |= DF_STATIC_TLS;
4383 tls_type = TLS_TLS | TLS_TPREL;
4384 goto dogottls;
4385
4386 case R_PPC64_GOT_DTPREL16_DS:
4387 case R_PPC64_GOT_DTPREL16_LO_DS:
4388 case R_PPC64_GOT_DTPREL16_HI:
4389 case R_PPC64_GOT_DTPREL16_HA:
4390 tls_type = TLS_TLS | TLS_DTPREL;
4391 dogottls:
4392 sec->has_tls_reloc = 1;
4393 /* Fall thru */
4394
5bd4f169 4395 case R_PPC64_GOT16:
5bd4f169 4396 case R_PPC64_GOT16_DS:
65f38f15
AM		 4397 case R_PPC64_GOT16_HA:
4398 case R_PPC64_GOT16_HI:
4399 case R_PPC64_GOT16_LO:
5bd4f169 4400 case R_PPC64_GOT16_LO_DS:
65f38f15 4401 /* This symbol requires a global offset table entry. */
4c52953f 4402 sec->has_toc_reloc = 1;
e717da7e
AM		 4403 if (ppc64_elf_tdata (abfd)->got == NULL
4404 && !create_got_section (abfd, info))
b34976b6 4405 return FALSE;
5bd4f169
AM		 4406
4407 if (h != NULL)
4408 {
411e1bfb
AM		 4409 struct ppc_link_hash_entry *eh;
4410 struct got_entry *ent;
65f38f15 4411
411e1bfb
AM		 4412 eh = (struct ppc_link_hash_entry *) h;
4413 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4414 if (ent->addend == rel->r_addend
e717da7e 4415 && ent->owner == abfd
411e1bfb
AM		 4416 && ent->tls_type == tls_type)
4417 break;
4418 if (ent == NULL)
5bd4f169 4419 {
411e1bfb 4420 bfd_size_type amt = sizeof (*ent);
4ce794b7 4421 ent = bfd_alloc (abfd, amt);
411e1bfb 4422 if (ent == NULL)
b34976b6 4423 return FALSE;
411e1bfb
AM		 4424 ent->next = eh->elf.got.glist;
4425 ent->addend = rel->r_addend;
e717da7e 4426 ent->owner = abfd;
411e1bfb
AM		 4427 ent->tls_type = tls_type;
4428 ent->got.refcount = 0;
4429 eh->elf.got.glist = ent;
5bd4f169 4430 }
411e1bfb 4431 ent->got.refcount += 1;
e7b938ca 4432 eh->tls_mask |= tls_type;
5bd4f169 4433 }
411e1bfb
AM		 4434 else
4435 /* This is a global offset table entry for a local symbol. */
4436 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4437 rel->r_addend, tls_type))
4438 return FALSE;
5bd4f169
AM		 4439 break;
4440
5bd4f169 4441 case R_PPC64_PLT16_HA:
65f38f15
AM		 4442 case R_PPC64_PLT16_HI:
4443 case R_PPC64_PLT16_LO:
4444 case R_PPC64_PLT32:
4445 case R_PPC64_PLT64:
5bd4f169 4446 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4447 actually build the entry in adjust_dynamic_symbol,
4448 because this might be a case of linking PIC code without
4449 linking in any dynamic objects, in which case we don't
4450 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4451 if (h == NULL)
4452 {
4453 /* It does not make sense to have a procedure linkage
3fad3c7c 4454 table entry for a local symbol. */
5bd4f169 4455 bfd_set_error (bfd_error_bad_value);
b34976b6 4456 return FALSE;
5bd4f169 4457 }
411e1bfb
AM		 4458 else
4459 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4460 rel->r_addend))
4461 return FALSE;
5bd4f169
AM		 4462 break;
4463
4464 /* The following relocations don't need to propagate the
4465 relocation if linking a shared object since they are
4466 section relative. */
4467 case R_PPC64_SECTOFF:
4468 case R_PPC64_SECTOFF_LO:
4469 case R_PPC64_SECTOFF_HI:
4470 case R_PPC64_SECTOFF_HA:
4471 case R_PPC64_SECTOFF_DS:
4472 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4473 case R_PPC64_DTPREL16:
4474 case R_PPC64_DTPREL16_LO:
4475 case R_PPC64_DTPREL16_HI:
4476 case R_PPC64_DTPREL16_HA:
4477 case R_PPC64_DTPREL16_DS:
4478 case R_PPC64_DTPREL16_LO_DS:
4479 case R_PPC64_DTPREL16_HIGHER:
4480 case R_PPC64_DTPREL16_HIGHERA:
4481 case R_PPC64_DTPREL16_HIGHEST:
4482 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4483 break;
4484
ad8e1ba5
AM		 4485 /* Nor do these. */
4486 case R_PPC64_TOC16:
4487 case R_PPC64_TOC16_LO:
4488 case R_PPC64_TOC16_HI:
4489 case R_PPC64_TOC16_HA:
4490 case R_PPC64_TOC16_DS:
4491 case R_PPC64_TOC16_LO_DS:
4c52953f 4492 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4493 break;
4494
5bd4f169
AM		 4495 /* This relocation describes the C++ object vtable hierarchy.
4496 Reconstruct it for later use during GC. */
4497 case R_PPC64_GNU_VTINHERIT:
c152c796 4498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4499 return FALSE;
5bd4f169
AM		 4500 break;
4501
4502 /* This relocation describes which C++ vtable entries are actually
4503 used. Record for later use during GC. */
4504 case R_PPC64_GNU_VTENTRY:
c152c796 4505 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4506 return FALSE;
5bd4f169
AM		 4507 break;
4508
721956f4
AM		 4509 case R_PPC64_REL14:
4510 case R_PPC64_REL14_BRTAKEN:
4511 case R_PPC64_REL14_BRNTAKEN:
4512 htab->has_14bit_branch = 1;
4513 /* Fall through. */
4514
5d1634d7 4515 case R_PPC64_REL24:
8387904d 4516 if (h != NULL)
5d1634d7
AM		 4517 {
4518 /* We may need a .plt entry if the function this reloc
4519 refers to is in a shared lib. */
411e1bfb
AM		 4520 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4521 rel->r_addend))
4522 return FALSE;
8387904d
AM		 4523 if (h == &htab->tls_get_addr->elf
4524 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4525 sec->has_tls_reloc = 1;
8387904d
AM		 4526 else if (htab->tls_get_addr == NULL
4527 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4528 && (h->root.root.string[15] == 0
4529 || h->root.root.string[15] == '@'))
411e1bfb 4530 {
8387904d
AM		 4531 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4532 sec->has_tls_reloc = 1;
4533 }
4534 else if (htab->tls_get_addr_fd == NULL
4535 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4536 && (h->root.root.string[14] == 0
4537 || h->root.root.string[14] == '@'))
4538 {
4539 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4540 sec->has_tls_reloc = 1;
4541 }
4542 }
4543 break;
4544
4545 case R_PPC64_TPREL64:
4546 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4547 if (info->shared)
4548 info->flags |= DF_STATIC_TLS;
4549 goto dotlstoc;
4550
4551 case R_PPC64_DTPMOD64:
4552 if (rel + 1 < rel_end
4553 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4554 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4555 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4556 else
951fd09b 4557 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4558 goto dotlstoc;
4559
4560 case R_PPC64_DTPREL64:
4561 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4562 if (rel != relocs
4563 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4564 && rel[-1].r_offset == rel->r_offset - 8)
4565 /* This is the second reloc of a dtpmod, dtprel pair.
4566 Don't mark with TLS_DTPREL. */
4567 goto dodyn;
4568
4569 dotlstoc:
4570 sec->has_tls_reloc = 1;
4571 if (h != NULL)
4572 {
4573 struct ppc_link_hash_entry *eh;
4574 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4575 eh->tls_mask |= tls_type;
411e1bfb
AM		 4576 }
4577 else
4578 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4579 rel->r_addend, tls_type))
4580 return FALSE;
4581
4582 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4583 {
e7b938ca 4584 /* One extra to simplify get_tls_mask. */
eea6121a 4585 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4586 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4587 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4588 return FALSE;
4589 }
4590 BFD_ASSERT (rel->r_offset % 8 == 0);
4591 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4592
4593 /* Mark the second slot of a GD or LD entry.
4594 -1 to indicate GD and -2 to indicate LD. */
4595 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4596 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4597 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4598 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4599 goto dodyn;
4600
4601 case R_PPC64_TPREL16:
4602 case R_PPC64_TPREL16_LO:
4603 case R_PPC64_TPREL16_HI:
4604 case R_PPC64_TPREL16_HA:
4605 case R_PPC64_TPREL16_DS:
4606 case R_PPC64_TPREL16_LO_DS:
4607 case R_PPC64_TPREL16_HIGHER:
4608 case R_PPC64_TPREL16_HIGHERA:
4609 case R_PPC64_TPREL16_HIGHEST:
4610 case R_PPC64_TPREL16_HIGHESTA:
4611 if (info->shared)
4612 {
4613 info->flags |= DF_STATIC_TLS;
4614 goto dodyn;
5d1634d7
AM		 4615 }
4616 break;
4617
e86ce104 4618 case R_PPC64_ADDR64:
1e2f5b6e 4619 if (opd_sym_map != NULL
1e2f5b6e 4620 && rel + 1 < rel_end
4ce794b7 4621 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4622 {
8387904d
AM		 4623 if (h != NULL)
4624 {
4625 if (h->root.root.string[0] == '.'
4626 && h->root.root.string[1] != 0
4627 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4628 ;
4629 else
4630 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4631 }
4632 else
4633 {
4634 asection *s;
1e2f5b6e 4635
8387904d
AM		 4636 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4637 r_symndx);
4638 if (s == NULL)
4639 return FALSE;
4640 else if (s != sec)
3f764659 4641 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4642 }
1e2f5b6e 4643 }
e86ce104
AM		 4644 /* Fall through. */
4645
04c9666a 4646 case R_PPC64_REL30:
5bd4f169 4647 case R_PPC64_REL32:
04c9666a 4648 case R_PPC64_REL64:
65f38f15
AM		 4649 case R_PPC64_ADDR14:
4650 case R_PPC64_ADDR14_BRNTAKEN:
4651 case R_PPC64_ADDR14_BRTAKEN:
4652 case R_PPC64_ADDR16:
4653 case R_PPC64_ADDR16_DS:
4654 case R_PPC64_ADDR16_HA:
4655 case R_PPC64_ADDR16_HI:
4656 case R_PPC64_ADDR16_HIGHER:
4657 case R_PPC64_ADDR16_HIGHERA:
4658 case R_PPC64_ADDR16_HIGHEST:
4659 case R_PPC64_ADDR16_HIGHESTA:
4660 case R_PPC64_ADDR16_LO:
4661 case R_PPC64_ADDR16_LO_DS:
4662 case R_PPC64_ADDR24:
65f38f15 4663 case R_PPC64_ADDR32:
65f38f15
AM		 4664 case R_PPC64_UADDR16:
4665 case R_PPC64_UADDR32:
4666 case R_PPC64_UADDR64:
5bd4f169 4667 case R_PPC64_TOC:
81848ca0
AM		 4668 if (h != NULL && !info->shared)
4669 /* We may need a copy reloc. */
f5385ebf 4670 h->non_got_ref = 1;
81848ca0 4671
41bd81ab 4672 /* Don't propagate .opd relocs. */
1e2f5b6e 4673 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4674 break;
e86ce104 4675
65f38f15
AM		 4676 /* If we are creating a shared library, and this is a reloc
4677 against a global symbol, or a non PC relative reloc
4678 against a local symbol, then we need to copy the reloc
4679 into the shared library. However, if we are linking with
4680 -Bsymbolic, we do not need to copy a reloc against a
4681 global symbol which is defined in an object we are
4682 including in the link (i.e., DEF_REGULAR is set). At
4683 this point we have not seen all the input files, so it is
4684 possible that DEF_REGULAR is not set now but will be set
4685 later (it is never cleared). In case of a weak definition,
4686 DEF_REGULAR may be cleared later by a strong definition in
4687 a shared library. We account for that possibility below by
f4656909 4688 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4689 table entry. A similar situation occurs when creating
4690 shared libraries and symbol visibility changes render the
4691 symbol local.
4692
4693 If on the other hand, we are creating an executable, we
4694 may need to keep relocations for symbols satisfied by a
4695 dynamic library if we manage to avoid copy relocs for the
4696 symbol. */
411e1bfb 4697 dodyn:
65f38f15 4698 if ((info->shared
411e1bfb 4699 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4700 || (h != NULL
4701 && (! info->symbolic
4702 || h->root.type == bfd_link_hash_defweak
f5385ebf 4703 || !h->def_regular))))
f4656909
AM		 4704 || (ELIMINATE_COPY_RELOCS
4705 && !info->shared
65f38f15
AM		 4706 && h != NULL
4707 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4708 || !h->def_regular)))
5bd4f169 4709 {
ec338859
AM		 4710 struct ppc_dyn_relocs *p;
4711 struct ppc_dyn_relocs **head;
4712
65f38f15
AM		 4713 /* We must copy these reloc types into the output file.
4714 Create a reloc section in dynobj and make room for
4715 this reloc. */
5bd4f169
AM		 4716 if (sreloc == NULL)
4717 {
4718 const char *name;
65f38f15 4719 bfd *dynobj;
5bd4f169
AM		 4720
4721 name = (bfd_elf_string_from_elf_section
4722 (abfd,
4723 elf_elfheader (abfd)->e_shstrndx,
4724 elf_section_data (sec)->rel_hdr.sh_name));
4725 if (name == NULL)
b34976b6 4726 return FALSE;
5bd4f169 4727
65f38f15
AM		 4728 if (strncmp (name, ".rela", 5) != 0
4729 || strcmp (bfd_get_section_name (abfd, sec),
4730 name + 5) != 0)
4731 {
4732 (*_bfd_error_handler)
d003868e
AM		 4733 (_("%B: bad relocation section name `%s\'"),
4734 abfd, name);
5d1634d7 4735 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4736 }
4737
65f38f15 4738 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4739 sreloc = bfd_get_section_by_name (dynobj, name);
4740 if (sreloc == NULL)
4741 {
4742 flagword flags;
4743
5bd4f169 4744 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4745 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4746 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4747 sreloc = bfd_make_section_with_flags (dynobj,
4748 name,
4749 flags);
5bd4f169 4750 if (sreloc == NULL
65f38f15 4751 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4752 return FALSE;
5bd4f169 4753 }
65f38f15 4754 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4755 }
4756
65f38f15
AM		 4757 /* If this is a global symbol, we count the number of
4758 relocations we need for this symbol. */
4759 if (h != NULL)
4760 {
ec338859 4761 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4762 }
4763 else
4764 {
ec338859
AM		 4765 /* Track dynamic relocs needed for local syms too.
4766 We really need local syms available to do this
4767 easily. Oh well. */
4768
4769 asection *s;
4770 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4771 sec, r_symndx);
4772 if (s == NULL)
b34976b6 4773 return FALSE;
ec338859
AM		 4774
4775 head = ((struct ppc_dyn_relocs **)
4776 &elf_section_data (s)->local_dynrel);
65f38f15 4777 }
ec338859
AM		 4778
4779 p = *head;
4780 if (p == NULL || p->sec != sec)
4781 {
4ce794b7 4782 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4783 if (p == NULL)
b34976b6 4784 return FALSE;
ec338859
AM		 4785 p->next = *head;
4786 *head = p;
4787 p->sec = sec;
4788 p->count = 0;
4789 p->pc_count = 0;
4790 }
4791
4792 p->count += 1;
411e1bfb 4793 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4794 p->pc_count += 1;
65f38f15 4795 }
5bd4f169 4796 break;
65f38f15
AM		 4797
4798 default:
96e0dda4 4799 break;
5bd4f169
AM		 4800 }
4801 }
4802
b34976b6 4803 return TRUE;
5bd4f169
AM		 4804}
4805
8387904d
AM		 4806/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4807 of the code entry point, and its section. */
4808
4809static bfd_vma
4810opd_entry_value (asection *opd_sec,
4811 bfd_vma offset,
4812 asection **code_sec,
4813 bfd_vma *code_off)
4814{
4815 bfd *opd_bfd = opd_sec->owner;
8860955f 4816 Elf_Internal_Rela *relocs;
8387904d 4817 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4818 bfd_vma val;
8387904d 4819
4b85d634
AM		 4820 /* No relocs implies we are linking a --just-symbols object. */
4821 if (opd_sec->reloc_count == 0)
4822 {
4823 bfd_vma val;
4824
4825 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4826 return (bfd_vma) -1;
3b36f7e6 4827
4b85d634
AM		 4828 if (code_sec != NULL)
4829 {
4830 asection *sec, *likely = NULL;
4831 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4832 if (sec->vma <= val
4833 && (sec->flags & SEC_LOAD) != 0
4834 && (sec->flags & SEC_ALLOC) != 0)
4835 likely = sec;
4836 if (likely != NULL)
4837 {
4838 *code_sec = likely;
4839 if (code_off != NULL)
4840 *code_off = val - likely->vma;
4841 }
4842 }
4843 return val;
4844 }
4845
8860955f
AM		 4846 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4847 if (relocs == NULL)
4848 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4849
8387904d 4850 /* Go find the opd reloc at the sym address. */
8860955f 4851 lo = relocs;
8387904d
AM		 4852 BFD_ASSERT (lo != NULL);
4853 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4854 val = (bfd_vma) -1;
8387904d
AM		 4855 while (lo < hi)
4856 {
4857 look = lo + (hi - lo) / 2;
4858 if (look->r_offset < offset)
4859 lo = look + 1;
4860 else if (look->r_offset > offset)
4861 hi = look;
4862 else
4863 {
4864 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4865 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4866 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4867 {
4868 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4869 asection *sec;
4870
4871 if (symndx < symtab_hdr->sh_info)
4872 {
4873 Elf_Internal_Sym *sym;
4874
4875 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4876 if (sym == NULL)
4877 {
4878 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4879 symtab_hdr->sh_info,
4880 0, NULL, NULL, NULL);
4881 if (sym == NULL)
645ea6a9 4882 break;
8387904d
AM		 4883 symtab_hdr->contents = (bfd_byte *) sym;
4884 }
4885
4886 sym += symndx;
4887 val = sym->st_value;
4888 sec = NULL;
4889 if ((sym->st_shndx != SHN_UNDEF
4890 && sym->st_shndx < SHN_LORESERVE)
4891 || sym->st_shndx > SHN_HIRESERVE)
4892 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4893 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4894 }
4895 else
4896 {
4897 struct elf_link_hash_entry **sym_hashes;
4898 struct elf_link_hash_entry *rh;
4899
4900 sym_hashes = elf_sym_hashes (opd_bfd);
4901 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4902 while (rh->root.type == bfd_link_hash_indirect
4903 || rh->root.type == bfd_link_hash_warning)
4904 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4905 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4906 || rh->root.type == bfd_link_hash_defweak);
4907 val = rh->root.u.def.value;
4908 sec = rh->root.u.def.section;
4909 }
4910 val += look->r_addend;
4911 if (code_off != NULL)
4912 *code_off = val;
4913 if (code_sec != NULL)
4914 *code_sec = sec;
4915 if (sec != NULL && sec->output_section != NULL)
4916 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4917 }
4918 break;
4919 }
4920 }
645ea6a9 4921
645ea6a9 4922 return val;
8387904d
AM		 4923}
4924
5bd4f169
AM		 4925/* Return the section that should be marked against GC for a given
4926 relocation. */
4927
4928static asection *
4ce794b7 4929ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4930 struct bfd_link_info *info,
4ce794b7
AM		 4931 Elf_Internal_Rela *rel,
4932 struct elf_link_hash_entry *h,
4933 Elf_Internal_Sym *sym)
5bd4f169 4934{
ccfa59ea
AM		 4935 asection *rsec;
4936
4937 /* First mark all our entry sym sections. */
4938 if (info->gc_sym_list != NULL)
4939 {
4940 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4941 struct bfd_sym_chain *sym = info->gc_sym_list;
4942
4943 info->gc_sym_list = NULL;
4944 do
4945 {
4946 struct ppc_link_hash_entry *eh;
4947
4948 eh = (struct ppc_link_hash_entry *)
4949 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4950 if (eh == NULL)
4951 continue;
4952 if (eh->elf.root.type != bfd_link_hash_defined
4953 && eh->elf.root.type != bfd_link_hash_defweak)
4954 continue;
4955
c4f68ce3
AM		 4956 if (eh->is_func_descriptor
4957 && (eh->oh->elf.root.type == bfd_link_hash_defined
4958 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4959 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4960 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4961 && opd_entry_value (eh->elf.root.u.def.section,
4962 eh->elf.root.u.def.value,
4963 &rsec, NULL) != (bfd_vma) -1)
4964 ;
ccfa59ea
AM		 4965 else
4966 continue;
4967
4968 if (!rsec->gc_mark)
4969 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4970
4971 rsec = eh->elf.root.u.def.section;
4972 if (!rsec->gc_mark)
4973 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4974
4975 sym = sym->next;
4976 }
4977 while (sym != NULL);
4978 }
4979
4980 /* Syms return NULL if we're marking .opd, so we avoid marking all
4981 function sections, as all functions are referenced in .opd. */
4982 rsec = NULL;
4983 if (get_opd_info (sec) != NULL)
4984 return rsec;
1e2f5b6e 4985
5bd4f169
AM		 4986 if (h != NULL)
4987 {
04c9666a 4988 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4989 struct ppc_link_hash_entry *eh;
a33d1f77 4990
4ce794b7 4991 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4992 switch (r_type)
5bd4f169
AM		 4993 {
4994 case R_PPC64_GNU_VTINHERIT:
4995 case R_PPC64_GNU_VTENTRY:
4996 break;
4997
4998 default:
4999 switch (h->root.type)
5000 {
5001 case bfd_link_hash_defined:
5002 case bfd_link_hash_defweak:
ccfa59ea 5003 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5004 if (eh->oh != NULL
5005 && eh->oh->is_func_descriptor
5006 && (eh->oh->elf.root.type == bfd_link_hash_defined
5007 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5008 eh = eh->oh;
1e2f5b6e
AM		 5009
5010 /* Function descriptor syms cause the associated
5011 function code sym section to be marked. */
c4f68ce3
AM		 5012 if (eh->is_func_descriptor
5013 && (eh->oh->elf.root.type == bfd_link_hash_defined
5014 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5015 {
5016 /* They also mark their opd section. */
5017 if (!eh->elf.root.u.def.section->gc_mark)
5018 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5019 ppc64_elf_gc_mark_hook);
5020
5021 rsec = eh->oh->elf.root.u.def.section;
5022 }
8387904d
AM		 5023 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5024 && opd_entry_value (eh->elf.root.u.def.section,
5025 eh->elf.root.u.def.value,
5026 &rsec, NULL) != (bfd_vma) -1)
5027 {
5028 if (!eh->elf.root.u.def.section->gc_mark)
5029 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5030 ppc64_elf_gc_mark_hook);
5031 }
ccfa59ea 5032 else
1e2f5b6e
AM		 5033 rsec = h->root.u.def.section;
5034 break;
5bd4f169
AM		 5035
5036 case bfd_link_hash_common:
1e2f5b6e
AM		 5037 rsec = h->root.u.c.p->section;
5038 break;
5bd4f169
AM		 5039
5040 default:
5041 break;
5042 }
5043 }
5044 }
5045 else
5046 {
1e2f5b6e
AM		 5047 asection **opd_sym_section;
5048
5049 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5050 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5051 if (opd_sym_section != NULL)
ccfa59ea
AM		 5052 {
5053 if (!rsec->gc_mark)
5054 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5055
b4f4e59f 5056 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5057 }
5bd4f169
AM		 5058 }
5059
1e2f5b6e 5060 return rsec;
5bd4f169
AM		 5061}
5062
65f38f15
AM		 5063/* Update the .got, .plt. and dynamic reloc reference counts for the
5064 section being removed. */
5bd4f169 5065
b34976b6 5066static bfd_boolean
4ce794b7
AM		 5067ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5068 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5069{
411e1bfb 5070 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5071 Elf_Internal_Shdr *symtab_hdr;
5072 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5073 struct got_entry **local_got_ents;
5bd4f169 5074 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5075
680a3378
AM		 5076 if ((sec->flags & SEC_ALLOC) == 0)
5077 return TRUE;
5078
ec338859
AM		 5079 elf_section_data (sec)->local_dynrel = NULL;
5080
411e1bfb 5081 htab = ppc_hash_table (info);
5bd4f169
AM		 5082 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5083 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5084 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5085
5086 relend = relocs + sec->reloc_count;
5087 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5088 {
5089 unsigned long r_symndx;
04c9666a 5090 enum elf_ppc64_reloc_type r_type;
58ac9f71 5091 struct elf_link_hash_entry *h = NULL;
411e1bfb 5092 char tls_type = 0;
5bd4f169 5093
a33d1f77 5094 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5095 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5096 if (r_symndx >= symtab_hdr->sh_info)
5097 {
5098 struct ppc_link_hash_entry *eh;
5099 struct ppc_dyn_relocs **pp;
5100 struct ppc_dyn_relocs *p;
5101
5102 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5103 while (h->root.type == bfd_link_hash_indirect
5104 || h->root.type == bfd_link_hash_warning)
5105 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5106 eh = (struct ppc_link_hash_entry *) h;
5107
5108 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5109 if (p->sec == sec)
5110 {
5111 /* Everything must go for SEC. */
5112 *pp = p->next;
5113 break;
5114 }
5115 }
5116
a33d1f77
AM		 5117 switch (r_type)
5118 {
411e1bfb
AM		 5119 case R_PPC64_GOT_TLSLD16:
5120 case R_PPC64_GOT_TLSLD16_LO:
5121 case R_PPC64_GOT_TLSLD16_HI:
5122 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5123 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5124 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5125 goto dogot;
5126
5127 case R_PPC64_GOT_TLSGD16:
5128 case R_PPC64_GOT_TLSGD16_LO:
5129 case R_PPC64_GOT_TLSGD16_HI:
5130 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5131 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5132 goto dogot;
5133
5134 case R_PPC64_GOT_TPREL16_DS:
5135 case R_PPC64_GOT_TPREL16_LO_DS:
5136 case R_PPC64_GOT_TPREL16_HI:
5137 case R_PPC64_GOT_TPREL16_HA:
5138 tls_type = TLS_TLS | TLS_TPREL;
5139 goto dogot;
5140
5141 case R_PPC64_GOT_DTPREL16_DS:
5142 case R_PPC64_GOT_DTPREL16_LO_DS:
5143 case R_PPC64_GOT_DTPREL16_HI:
5144 case R_PPC64_GOT_DTPREL16_HA:
5145 tls_type = TLS_TLS | TLS_DTPREL;
5146 goto dogot;
5147
a33d1f77
AM		 5148 case R_PPC64_GOT16:
5149 case R_PPC64_GOT16_DS:
5150 case R_PPC64_GOT16_HA:
5151 case R_PPC64_GOT16_HI:
5152 case R_PPC64_GOT16_LO:
5153 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5154 dogot:
5155 {
5156 struct got_entry *ent;
5157
58ac9f71
AM		 5158 if (h != NULL)
5159 ent = h->got.glist;
411e1bfb
AM		 5160 else
5161 ent = local_got_ents[r_symndx];
5162
5163 for (; ent != NULL; ent = ent->next)
5164 if (ent->addend == rel->r_addend
e717da7e 5165 && ent->owner == abfd
411e1bfb
AM		 5166 && ent->tls_type == tls_type)
5167 break;
5168 if (ent == NULL)
5169 abort ();
5170 if (ent->got.refcount > 0)
5171 ent->got.refcount -= 1;
5172 }
a33d1f77 5173 break;
65f38f15 5174
a33d1f77
AM		 5175 case R_PPC64_PLT16_HA:
5176 case R_PPC64_PLT16_HI:
5177 case R_PPC64_PLT16_LO:
5178 case R_PPC64_PLT32:
5179 case R_PPC64_PLT64:
721956f4
AM		 5180 case R_PPC64_REL14:
5181 case R_PPC64_REL14_BRNTAKEN:
5182 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5183 case R_PPC64_REL24:
58ac9f71 5184 if (h != NULL)
5d1634d7 5185 {
411e1bfb
AM		 5186 struct plt_entry *ent;
5187
411e1bfb
AM		 5188 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5189 if (ent->addend == rel->r_addend)
5190 break;
5191 if (ent == NULL)
5192 abort ();
5193 if (ent->plt.refcount > 0)
5194 ent->plt.refcount -= 1;
5d1634d7 5195 }
e86ce104 5196 break;
5d1634d7 5197
a33d1f77
AM		 5198 default:
5199 break;
5200 }
5201 }
b34976b6 5202 return TRUE;
5bd4f169
AM		 5203}
5204
deb0e272
AM		 5205/* The maximum size of .sfpr. */
5206#define SFPR_MAX (218*4)
5207
5208struct sfpr_def_parms
5209{
699733f6
AM		 5210 const char name[12];
5211 unsigned char lo, hi;
deb0e272
AM		 5212 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5213 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5214};
5215
5216/* Auto-generate _save*, _rest* functions in .sfpr. */
5217
5218static unsigned int
5219sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5220{
5221 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5222 unsigned int i;
5223 size_t len = strlen (parm->name);
5224 bfd_boolean writing = FALSE;
699733f6 5225 char sym[16];
deb0e272
AM		 5226
5227 memcpy (sym, parm->name, len);
5228 sym[len + 2] = 0;
5229
5230 for (i = parm->lo; i <= parm->hi; i++)
5231 {
5232 struct elf_link_hash_entry *h;
5233
5234 sym[len + 0] = i / 10 + '0';
5235 sym[len + 1] = i % 10 + '0';
5236 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5237 if (h != NULL
f5385ebf 5238 && !h->def_regular)
deb0e272
AM		 5239 {
5240 h->root.type = bfd_link_hash_defined;
5241 h->root.u.def.section = htab->sfpr;
5242 h->root.u.def.value = htab->sfpr->size;
5243 h->type = STT_FUNC;
f5385ebf 5244 h->def_regular = 1;
deb0e272
AM		 5245 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5246 writing = TRUE;
5247 if (htab->sfpr->contents == NULL)
5248 {
5249 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5250 if (htab->sfpr->contents == NULL)
5251 return FALSE;
5252 }
5253 }
5254 if (writing)
5255 {
5256 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5257 if (i != parm->hi)
5258 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5259 else
5260 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5261 htab->sfpr->size = p - htab->sfpr->contents;
5262 }
5263 }
5264
5265 return TRUE;
5266}
5267
5268static bfd_byte *
5269savegpr0 (bfd *abfd, bfd_byte *p, int r)
5270{
5271 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5272 return p + 4;
5273}
5274
5275static bfd_byte *
5276savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5277{
5278 p = savegpr0 (abfd, p, r);
5279 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5280 p = p + 4;
5281 bfd_put_32 (abfd, BLR, p);
5282 return p + 4;
5283}
5284
5285static bfd_byte *
5286restgpr0 (bfd *abfd, bfd_byte *p, int r)
5287{
5288 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5289 return p + 4;
5290}
5291
5292static bfd_byte *
5293restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5294{
5295 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5296 p = p + 4;
5297 p = restgpr0 (abfd, p, r);
5298 bfd_put_32 (abfd, MTLR_R0, p);
5299 p = p + 4;
5300 if (r == 29)
5301 {
5302 p = restgpr0 (abfd, p, 30);
5303 p = restgpr0 (abfd, p, 31);
5304 }
5305 bfd_put_32 (abfd, BLR, p);
5306 return p + 4;
5307}
5308
5309static bfd_byte *
5310savegpr1 (bfd *abfd, bfd_byte *p, int r)
5311{
5312 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5313 return p + 4;
5314}
5315
5316static bfd_byte *
5317savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5318{
5319 p = savegpr1 (abfd, p, r);
5320 bfd_put_32 (abfd, BLR, p);
5321 return p + 4;
5322}
5323
5324static bfd_byte *
5325restgpr1 (bfd *abfd, bfd_byte *p, int r)
5326{
5327 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5328 return p + 4;
5329}
5330
5331static bfd_byte *
5332restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5333{
5334 p = restgpr1 (abfd, p, r);
5335 bfd_put_32 (abfd, BLR, p);
5336 return p + 4;
5337}
5338
5339static bfd_byte *
5340savefpr (bfd *abfd, bfd_byte *p, int r)
5341{
5342 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5343 return p + 4;
5344}
5345
5346static bfd_byte *
5347savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5348{
5349 p = savefpr (abfd, p, r);
5350 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5351 p = p + 4;
5352 bfd_put_32 (abfd, BLR, p);
5353 return p + 4;
5354}
5355
5356static bfd_byte *
5357restfpr (bfd *abfd, bfd_byte *p, int r)
5358{
5359 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5360 return p + 4;
5361}
5362
5363static bfd_byte *
5364restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5365{
5366 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5367 p = p + 4;
5368 p = restfpr (abfd, p, r);
5369 bfd_put_32 (abfd, MTLR_R0, p);
5370 p = p + 4;
5371 if (r == 29)
5372 {
5373 p = restfpr (abfd, p, 30);
5374 p = restfpr (abfd, p, 31);
5375 }
5376 bfd_put_32 (abfd, BLR, p);
5377 return p + 4;
5378}
5379
5380static bfd_byte *
5381savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5382{
5383 p = savefpr (abfd, p, r);
5384 bfd_put_32 (abfd, BLR, p);
5385 return p + 4;
5386}
5387
5388static bfd_byte *
5389restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5390{
5391 p = restfpr (abfd, p, r);
5392 bfd_put_32 (abfd, BLR, p);
5393 return p + 4;
5394}
5395
5396static bfd_byte *
5397savevr (bfd *abfd, bfd_byte *p, int r)
5398{
5399 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5400 p = p + 4;
5401 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5402 return p + 4;
5403}
5404
5405static bfd_byte *
5406savevr_tail (bfd *abfd, bfd_byte *p, int r)
5407{
5408 p = savevr (abfd, p, r);
5409 bfd_put_32 (abfd, BLR, p);
5410 return p + 4;
5411}
5412
5413static bfd_byte *
5414restvr (bfd *abfd, bfd_byte *p, int r)
5415{
5416 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5417 p = p + 4;
5418 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5419 return p + 4;
5420}
5421
5422static bfd_byte *
5423restvr_tail (bfd *abfd, bfd_byte *p, int r)
5424{
5425 p = restvr (abfd, p, r);
5426 bfd_put_32 (abfd, BLR, p);
5427 return p + 4;
5428}
5429
e86ce104
AM		 5430/* Called via elf_link_hash_traverse to transfer dynamic linking
5431 information on function code symbol entries to their corresponding
5432 function descriptor symbol entries. */
deb0e272 5433
b34976b6 5434static bfd_boolean
4ce794b7 5435func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5436{
e86ce104 5437 struct bfd_link_info *info;
65f38f15 5438 struct ppc_link_hash_table *htab;
411e1bfb 5439 struct plt_entry *ent;
50bc7936
AM		 5440 struct ppc_link_hash_entry *fh;
5441 struct ppc_link_hash_entry *fdh;
5442 bfd_boolean force_local;
5bd4f169 5443
50bc7936
AM		 5444 fh = (struct ppc_link_hash_entry *) h;
5445 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5446 return TRUE;
e86ce104 5447
50bc7936
AM		 5448 if (fh->elf.root.type == bfd_link_hash_warning)
5449 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5450
4ce794b7 5451 info = inf;
65f38f15 5452 htab = ppc_hash_table (info);
5bd4f169 5453
c09bdfe5
AM		 5454 /* Resolve undefined references to dot-symbols as the value
5455 in the function descriptor, if we have one in a regular object.
5456 This is to satisfy cases like ".quad .foo". Calls to functions
5457 in dynamic objects are handled elsewhere. */
5458 if (fh->elf.root.type == bfd_link_hash_undefweak
5459 && fh->was_undefined
5460 && (fh->oh->elf.root.type == bfd_link_hash_defined
5461 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5462 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5463 && opd_entry_value (fh->oh->elf.root.u.def.section,
5464 fh->oh->elf.root.u.def.value,
5465 &fh->elf.root.u.def.section,
5466 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5467 {
5468 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5469 fh->elf.forced_local = 1;
c09bdfe5
AM		 5470 }
5471
e86ce104
AM		 5472 /* If this is a function code symbol, transfer dynamic linking
5473 information to the function descriptor symbol. */
50bc7936 5474 if (!fh->is_func)
b34976b6 5475 return TRUE;
e86ce104 5476
50bc7936 5477 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5478 if (ent->plt.refcount > 0)
5479 break;
50bc7936
AM		 5480 if (ent == NULL
5481 || fh->elf.root.root.string[0] != '.'
5482 || fh->elf.root.root.string[1] == '\0')
5483 return TRUE;
5bd4f169 5484
50bc7936
AM		 5485 /* Find the corresponding function descriptor symbol. Create it
5486 as undefined if necessary. */
5bd4f169 5487
50bc7936
AM		 5488 fdh = get_fdh (fh, htab);
5489 if (fdh != NULL)
5490 while (fdh->elf.root.type == bfd_link_hash_indirect
5491 || fdh->elf.root.type == bfd_link_hash_warning)
5492 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5493
50bc7936
AM		 5494 if (fdh == NULL
5495 && info->shared
5496 && (fh->elf.root.type == bfd_link_hash_undefined
5497 || fh->elf.root.type == bfd_link_hash_undefweak))
5498 {
908b32fc 5499 fdh = make_fdh (info, fh);
bb700d78
AM		 5500 if (fdh == NULL)
5501 return FALSE;
50bc7936 5502 }
648cca2c 5503
908b32fc 5504 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5505 code symbol is strong undefined, make the fake sym the same.
5506 If the function code symbol is defined, then force the fake
5507 descriptor local; We can't support overriding of symbols in a
5508 shared library on a fake descriptor. */
908b32fc
AM		 5509
5510 if (fdh != NULL
5511 && fdh->fake
433817dd 5512 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5513 {
433817dd
AM		 5514 if (fh->elf.root.type == bfd_link_hash_undefined)
5515 {
5516 fdh->elf.root.type = bfd_link_hash_undefined;
5517 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5518 }
5519 else if (fh->elf.root.type == bfd_link_hash_defined
5520 || fh->elf.root.type == bfd_link_hash_defweak)
5521 {
5522 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5523 }
908b32fc
AM		 5524 }
5525
50bc7936 5526 if (fdh != NULL
f5385ebf 5527 && !fdh->elf.forced_local
50bc7936 5528 && (info->shared
f5385ebf
AM		 5529 || fdh->elf.def_dynamic
5530 || fdh->elf.ref_dynamic
50bc7936
AM		 5531 || (fdh->elf.root.type == bfd_link_hash_undefweak
5532 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5533 {
5534 if (fdh->elf.dynindx == -1)
c152c796 5535 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5536 return FALSE;
f5385ebf
AM		 5537 fdh->elf.ref_regular |= fh->elf.ref_regular;
5538 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5539 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5540 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5541 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5542 {
40d16e0b 5543 move_plt_plist (fh, fdh);
f5385ebf 5544 fdh->elf.needs_plt = 1;
e86ce104 5545 }
50bc7936 5546 fdh->is_func_descriptor = 1;
34814b9f
AM		 5547 fdh->oh = fh;
5548 fh->oh = fdh;
e86ce104
AM		 5549 }
5550
50bc7936
AM		 5551 /* Now that the info is on the function descriptor, clear the
5552 function code sym info. Any function code syms for which we
5553 don't have a definition in a regular file, we force local.
5554 This prevents a shared library from exporting syms that have
5555 been imported from another library. Function code syms that
5556 are really in the library we must leave global to prevent the
5557 linker dragging in a definition from a static library. */
93f3fa99
AM		 5558 force_local = (!fh->elf.def_regular
5559 || fdh == NULL
5560 || !fdh->elf.def_regular
5561 || fdh->elf.forced_local);
50bc7936
AM		 5562 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5563
b34976b6 5564 return TRUE;
e86ce104 5565}
40b8271b 5566
e86ce104 5567/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5568 this hook to a) provide some gcc support functions, and b) transfer
5569 dynamic linking information gathered so far on function code symbol
5570 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5571
b34976b6 5572static bfd_boolean
4ce794b7
AM		 5573ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5574 struct bfd_link_info *info)
e86ce104
AM		 5575{
5576 struct ppc_link_hash_table *htab;
82bd7b59 5577 unsigned int i;
deb0e272
AM		 5578 const struct sfpr_def_parms funcs[] =
5579 {
5580 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5581 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5582 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5583 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5584 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5585 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5586 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5587 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5588 { "._savef", 14, 31, savefpr, savefpr1_tail },
5589 { "._restf", 14, 31, restfpr, restfpr1_tail },
5590 { "_savevr_", 20, 31, savevr, savevr_tail },
5591 { "_restvr_", 20, 31, restvr, restvr_tail }
5592 };
e86ce104
AM		 5593
5594 htab = ppc_hash_table (info);
82bd7b59
AM		 5595 if (htab->sfpr == NULL)
5596 /* We don't have any relocs. */
b34976b6 5597 return TRUE;
82bd7b59 5598
deb0e272
AM		 5599 /* Provide any missing _save* and _rest* functions. */
5600 htab->sfpr->size = 0;
5601 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5602 if (!sfpr_define (info, &funcs[i]))
5603 return FALSE;
82bd7b59 5604
4ce794b7 5605 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5606
eea6121a 5607 if (htab->sfpr->size == 0)
8423293d 5608 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5609
b34976b6 5610 return TRUE;
e86ce104
AM		 5611}
5612
5613/* Adjust a symbol defined by a dynamic object and referenced by a
5614 regular object. The current definition is in some section of the
5615 dynamic object, but we're not including those sections. We have to
5616 change the definition to something the rest of the link can
5617 understand. */
5618
b34976b6 5619static bfd_boolean
4ce794b7
AM		 5620ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5621 struct elf_link_hash_entry *h)
e86ce104
AM		 5622{
5623 struct ppc_link_hash_table *htab;
e86ce104
AM		 5624 asection *s;
5625 unsigned int power_of_two;
5626
5627 htab = ppc_hash_table (info);
5628
5629 /* Deal with function syms. */
5630 if (h->type == STT_FUNC
f5385ebf 5631 || h->needs_plt)
e86ce104
AM		 5632 {
5633 /* Clear procedure linkage table information for any symbol that
5634 won't need a .plt entry. */
411e1bfb
AM		 5635 struct plt_entry *ent;
5636 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5637 if (ent->plt.refcount > 0)
5638 break;
8387904d 5639 if (ent == NULL
9c7a29a3
AM		 5640 || SYMBOL_CALLS_LOCAL (info, h)
5641 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5642 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5643 {
411e1bfb 5644 h->plt.plist = NULL;
f5385ebf 5645 h->needs_plt = 0;
40b8271b 5646 }
5bd4f169 5647 }
bbd7ec4a 5648 else
411e1bfb 5649 h->plt.plist = NULL;
5bd4f169
AM		 5650
5651 /* If this is a weak symbol, and there is a real definition, the
5652 processor independent code will have arranged for us to see the
5653 real definition first, and we can just use the same value. */
f6e332e6 5654 if (h->u.weakdef != NULL)
5bd4f169 5655 {
f6e332e6
AM		 5656 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5657 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5658 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5659 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5660 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5661 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5662 return TRUE;
5bd4f169
AM		 5663 }
5664
5bd4f169
AM		 5665 /* If we are creating a shared library, we must presume that the
5666 only references to the symbol are via the global offset table.
5667 For such cases we need not do anything here; the relocations will
5668 be handled correctly by relocate_section. */
5669 if (info->shared)
b34976b6 5670 return TRUE;
5bd4f169 5671
65f38f15
AM		 5672 /* If there are no references to this symbol that do not use the
5673 GOT, we don't need to generate a copy reloc. */
f5385ebf 5674 if (!h->non_got_ref)
b34976b6 5675 return TRUE;
65f38f15 5676
f4656909 5677 if (ELIMINATE_COPY_RELOCS)
65f38f15 5678 {
f4656909
AM		 5679 struct ppc_link_hash_entry * eh;
5680 struct ppc_dyn_relocs *p;
65f38f15 5681
f4656909
AM		 5682 eh = (struct ppc_link_hash_entry *) h;
5683 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5684 {
5685 s = p->sec->output_section;
5686 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5687 break;
5688 }
5689
5690 /* If we didn't find any dynamic relocs in read-only sections, then
5691 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5692 if (p == NULL)
5693 {
f5385ebf 5694 h->non_got_ref = 0;
f4656909
AM		 5695 return TRUE;
5696 }
65f38f15
AM		 5697 }
5698
5d35169e 5699 if (h->plt.plist != NULL)
97b639ba
AM		 5700 {
5701 /* We should never get here, but unfortunately there are versions
5702 of gcc out there that improperly (for this ABI) put initialized
5703 function pointers, vtable refs and suchlike in read-only
5704 sections. Allow them to proceed, but warn that this might
5705 break at runtime. */
5706 (*_bfd_error_handler)
5707 (_("copy reloc against `%s' requires lazy plt linking; "
5708 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5709 h->root.root.string);
5710 }
5d35169e
AM		 5711
5712 /* This is a reference to a symbol defined by a dynamic object which
5713 is not a function. */
5714
909272ee
AM		 5715 if (h->size == 0)
5716 {
5717 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5718 h->root.root.string);
5719 return TRUE;
5720 }
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 6153ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6154 bfd_boolean no_opd_opt,
3f764659 6155 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6156{
6157 bfd *ibfd;
754021d0 6158 bfd_boolean some_edited = FALSE;
3f764659 6159 asection *need_pad = NULL;
1e2f5b6e 6160
411e1bfb 6161 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6162 {
6163 asection *sec;
6164 Elf_Internal_Rela *relstart, *rel, *relend;
6165 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6166 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6167 struct elf_link_hash_entry **sym_hashes;
6168 bfd_vma offset;
d6fe2dc1 6169 bfd_size_type amt;
4025353c 6170 long *opd_adjust;
3f764659
JJ		 6171 bfd_boolean need_edit, add_aux_fields;
6172 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6173
6174 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6175 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6176 continue;
6177
3f764659 6178 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6179 opd_adjust = get_opd_info (sec);
6180 if (opd_adjust == NULL)
d6fe2dc1 6181 {
4b85d634
AM		 6182 /* check_relocs hasn't been called. Must be a ld -r link
6183 or --just-symbols object. */
b4f4e59f 6184 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM		 6185 if (opd_adjust == NULL)
6186 return FALSE;
4025353c 6187 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 6188 }
4025353c 6189 memset (opd_adjust, 0, amt);
1e2f5b6e 6190
b4f4e59f
AM		 6191 if (no_opd_opt)
6192 continue;
6193
4b85d634
AM		 6194 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6195 continue;
6196
1e2f5b6e
AM		 6197 if (sec->output_section == bfd_abs_section_ptr)
6198 continue;
6199
6200 /* Look through the section relocs. */
6201 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6202 continue;
6203
6cdc0ccc 6204 local_syms = NULL;
1e2f5b6e
AM		 6205 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6206 sym_hashes = elf_sym_hashes (ibfd);
6207
6208 /* Read the relocations. */
4ce794b7 6209 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6210 info->keep_memory);
1e2f5b6e 6211 if (relstart == NULL)
b34976b6 6212 return FALSE;
1e2f5b6e
AM		 6213
6214 /* First run through the relocs to check they are sane, and to
6215 determine whether we need to edit this opd section. */
b34976b6 6216 need_edit = FALSE;
3f764659 6217 need_pad = sec;
1e2f5b6e
AM		 6218 offset = 0;
6219 relend = relstart + sec->reloc_count;
50bc7936 6220 for (rel = relstart; rel < relend; )
1e2f5b6e 6221 {
04c9666a 6222 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6223 unsigned long r_symndx;
6224 asection *sym_sec;
6225 struct elf_link_hash_entry *h;
6226 Elf_Internal_Sym *sym;
6227
3f764659 6228 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6229 only interested in the reloc pointing to a function entry
6230 point. */
50bc7936
AM		 6231 if (rel->r_offset != offset
6232 || rel + 1 >= relend
6233 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6234 {
6235 /* If someone messes with .opd alignment then after a
6236 "ld -r" we might have padding in the middle of .opd.
6237 Also, there's nothing to prevent someone putting
6238 something silly in .opd with the assembler. No .opd
b34976b6 6239 optimization for them! */
3f764659 6240 broken_opd:
1e2f5b6e 6241 (*_bfd_error_handler)
d003868e 6242 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6243 need_edit = FALSE;
1e2f5b6e
AM		 6244 break;
6245 }
6246
50bc7936
AM		 6247 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6248 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6249 {
6250 (*_bfd_error_handler)
d003868e
AM		 6251 (_("%B: unexpected reloc type %u in .opd section"),
6252 ibfd, r_type);
50bc7936
AM		 6253 need_edit = FALSE;
6254 break;
6255 }
6256
1e2f5b6e 6257 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6258 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6259 r_symndx, ibfd))
50bc7936 6260 goto error_ret;
1e2f5b6e
AM		 6261
6262 if (sym_sec == NULL || sym_sec->owner == NULL)
6263 {
411e1bfb
AM		 6264 const char *sym_name;
6265 if (h != NULL)
6266 sym_name = h->root.root.string;
6267 else
26c61ae5
L		 6268 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6269 sym_sec);
411e1bfb 6270
1e2f5b6e 6271 (*_bfd_error_handler)
d003868e
AM		 6272 (_("%B: undefined sym `%s' in .opd section"),
6273 ibfd, sym_name);
b34976b6 6274 need_edit = FALSE;
1e2f5b6e
AM		 6275 break;
6276 }
6277
51020317
AM		 6278 /* opd entries are always for functions defined in the
6279 current input bfd. If the symbol isn't defined in the
6280 input bfd, then we won't be using the function in this
6281 bfd; It must be defined in a linkonce section in another
6282 bfd, or is weak. It's also possible that we are
6283 discarding the function due to a linker script /DISCARD/,
6284 which we test for via the output_section. */
6285 if (sym_sec->owner != ibfd
6286 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6287 need_edit = TRUE;
1e2f5b6e 6288
50bc7936 6289 rel += 2;
3f764659
JJ		 6290 if (rel == relend
6291 || (rel + 1 == relend && rel->r_offset == offset + 16))
6292 {
6293 if (sec->size == offset + 24)
6294 {
6295 need_pad = NULL;
6296 break;
6297 }
6298 if (rel == relend && sec->size == offset + 16)
6299 {
6300 cnt_16b++;
6301 break;
6302 }
6303 goto broken_opd;
6304 }
6305
6306 if (rel->r_offset == offset + 24)
6307 offset += 24;
6308 else if (rel->r_offset != offset + 16)
6309 goto broken_opd;
6310 else if (rel + 1 < relend
6311 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6312 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6313 {
6314 offset += 16;
6315 cnt_16b++;
6316 }
6317 else if (rel + 2 < relend
6318 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6319 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6320 {
6321 offset += 24;
6322 rel += 1;
6323 }
6324 else
6325 goto broken_opd;
1e2f5b6e
AM		 6326 }
6327
3f764659
JJ		 6328 add_aux_fields = non_overlapping && cnt_16b > 0;
6329
6330 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6331 {
6332 Elf_Internal_Rela *write_rel;
6333 bfd_byte *rptr, *wptr;
3f764659 6334 bfd_byte *new_contents = NULL;
b34976b6 6335 bfd_boolean skip;
3f764659 6336 long opd_ent_size;
1e2f5b6e
AM		 6337
6338 /* This seems a waste of time as input .opd sections are all
6339 zeros as generated by gcc, but I suppose there's no reason
6340 this will always be so. We might start putting something in
6341 the third word of .opd entries. */
6342 if ((sec->flags & SEC_IN_MEMORY) == 0)
6343 {
eea6121a
AM		 6344 bfd_byte *loc;
6345 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6346 {
eea6121a
AM		 6347 if (loc != NULL)
6348 free (loc);
50bc7936 6349 error_ret:
6cdc0ccc
AM		 6350 if (local_syms != NULL
6351 && symtab_hdr->contents != (unsigned char *) local_syms)
6352 free (local_syms);
6cdc0ccc
AM		 6353 if (elf_section_data (sec)->relocs != relstart)
6354 free (relstart);
b34976b6 6355 return FALSE;
6cdc0ccc 6356 }
1e2f5b6e
AM		 6357 sec->contents = loc;
6358 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6359 }
6360
6361 elf_section_data (sec)->relocs = relstart;
6362
3f764659 6363 new_contents = sec->contents;
3f764659
JJ		 6364 if (add_aux_fields)
6365 {
6366 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6367 if (new_contents == NULL)
6368 return FALSE;
6369 need_pad = FALSE;
3f764659 6370 }
b4f4e59f
AM		 6371 wptr = new_contents;
6372 rptr = sec->contents;
3f764659 6373
1e2f5b6e 6374 write_rel = relstart;
b34976b6 6375 skip = FALSE;
1e2f5b6e 6376 offset = 0;
3f764659 6377 opd_ent_size = 0;
1e2f5b6e
AM		 6378 for (rel = relstart; rel < relend; rel++)
6379 {
50bc7936
AM		 6380 unsigned long r_symndx;
6381 asection *sym_sec;
6382 struct elf_link_hash_entry *h;
6383 Elf_Internal_Sym *sym;
6384
6385 r_symndx = ELF64_R_SYM (rel->r_info);
6386 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6387 r_symndx, ibfd))
50bc7936
AM		 6388 goto error_ret;
6389
1e2f5b6e
AM		 6390 if (rel->r_offset == offset)
6391 {
50bc7936 6392 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6393
6394 /* See if the .opd entry is full 24 byte or
6395 16 byte (with fd_aux entry overlapped with next
6396 fd_func). */
6397 opd_ent_size = 24;
6398 if ((rel + 2 == relend && sec->size == offset + 16)
6399 || (rel + 3 < relend
6400 && rel[2].r_offset == offset + 16
6401 && rel[3].r_offset == offset + 24
6402 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6403 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6404 opd_ent_size = 16;
6405
4025353c
AM		 6406 if (h != NULL
6407 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6408 {
6409 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6410 ppc_hash_table (info));
6411 if (fdh != NULL
6412 && fdh->elf.root.type != bfd_link_hash_defined
6413 && fdh->elf.root.type != bfd_link_hash_defweak)
6414 fdh = NULL;
6415 }
1e2f5b6e 6416
51020317
AM		 6417 skip = (sym_sec->owner != ibfd
6418 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6419 if (skip)
6420 {
4025353c 6421 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6422 {
6423 /* Arrange for the function descriptor sym
6424 to be dropped. */
d6fe2dc1
AM		 6425 fdh->elf.root.u.def.value = 0;
6426 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6427 }
3f764659 6428 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6429 }
6430 else
1e2f5b6e
AM		 6431 {
6432 /* We'll be keeping this opd entry. */
6433
4025353c 6434 if (fdh != NULL)
1e2f5b6e 6435 {
754021d0
AM		 6436 /* Redefine the function descriptor symbol to
6437 this location in the opd section. It is
6438 necessary to update the value here rather
6439 than using an array of adjustments as we do
6440 for local symbols, because various places
6441 in the generic ELF code use the value
6442 stored in u.def.value. */
3f764659 6443 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6444 fdh->adjust_done = 1;
1e2f5b6e 6445 }
754021d0
AM		 6446
6447 /* Local syms are a bit tricky. We could
6448 tweak them as they can be cached, but
6449 we'd need to look through the local syms
6450 for the function descriptor sym which we
6451 don't have at the moment. So keep an
6452 array of adjustments. */
3f764659
JJ		 6453 opd_adjust[rel->r_offset / 8]
6454 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6455
6456 if (wptr != rptr)
3f764659
JJ		 6457 memcpy (wptr, rptr, opd_ent_size);
6458 wptr += opd_ent_size;
6459 if (add_aux_fields && opd_ent_size == 16)
6460 {
6461 memset (wptr, '\0', 8);
6462 wptr += 8;
6463 }
1e2f5b6e 6464 }
3f764659
JJ		 6465 rptr += opd_ent_size;
6466 offset += opd_ent_size;
1e2f5b6e
AM		 6467 }
6468
50bc7936
AM		 6469 if (skip)
6470 {
18d944df
AM		 6471 if (!info->relocatable
6472 && !dec_dynrel_count (rel->r_info, sec, info,
6473 NULL, h, sym_sec))
8c1d1bb8 6474 goto error_ret;
50bc7936
AM		 6475 }
6476 else
1e2f5b6e 6477 {
50bc7936
AM		 6478 /* We need to adjust any reloc offsets to point to the
6479 new opd entries. While we're at it, we may as well
6480 remove redundant relocs. */
3f764659 6481 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6482 if (write_rel != rel)
6483 memcpy (write_rel, rel, sizeof (*rel));
6484 ++write_rel;
6485 }
6486 }
6487
3f764659 6488 sec->size = wptr - new_contents;
1e2f5b6e 6489 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6490 if (add_aux_fields)
6491 {
6492 free (sec->contents);
6493 sec->contents = new_contents;
6494 }
6495
cdcf6e38
AM		 6496 /* Fudge the size too, as this is used later in
6497 elf_bfd_final_link if we are emitting relocs. */
6498 elf_section_data (sec)->rel_hdr.sh_size
6499 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6500 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6501 some_edited = TRUE;
1e2f5b6e 6502 }
6cdc0ccc 6503 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6504 free (relstart);
6cdc0ccc 6505
411e1bfb
AM		 6506 if (local_syms != NULL
6507 && symtab_hdr->contents != (unsigned char *) local_syms)
6508 {
6509 if (!info->keep_memory)
6510 free (local_syms);
6511 else
6512 symtab_hdr->contents = (unsigned char *) local_syms;
6513 }
6514 }
6515
754021d0
AM		 6516 if (some_edited)
6517 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6518
3f764659
JJ		 6519 /* If we are doing a final link and the last .opd entry is just 16 byte
6520 long, add a 8 byte padding after it. */
6521 if (need_pad != NULL && !info->relocatable)
6522 {
6523 bfd_byte *p;
6524
6525 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6526 {
6527 BFD_ASSERT (need_pad->size > 0);
6528
6529 p = bfd_malloc (need_pad->size + 8);
6530 if (p == NULL)
6531 return FALSE;
699733f6 6532
3f764659
JJ		 6533 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6534 p, 0, need_pad->size))
6535 return FALSE;
6536
6537 need_pad->contents = p;
6538 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6539 }
6540 else
6541 {
6542 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6543 if (p == NULL)
6544 return FALSE;
6545
6546 need_pad->contents = p;
6547 }
6548
6549 memset (need_pad->contents + need_pad->size, 0, 8);
6550 need_pad->size += 8;
6551 }
6552
411e1bfb
AM		 6553 return TRUE;
6554}
6555
e1918d23 6556/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6557
e1918d23 6558asection *
4ce794b7 6559ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6560{
411e1bfb
AM		 6561 struct ppc_link_hash_table *htab;
6562
411e1bfb 6563 htab = ppc_hash_table (info);
a48ebf4d
AM		 6564 if (htab->tls_get_addr != NULL)
6565 {
8387904d 6566 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6567
8387904d
AM		 6568 while (h->elf.root.type == bfd_link_hash_indirect
6569 || h->elf.root.type == bfd_link_hash_warning)
6570 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6571
6572 htab->tls_get_addr = h;
8387904d
AM		 6573
6574 if (htab->tls_get_addr_fd == NULL
6575 && h->oh != NULL
c4f68ce3
AM		 6576 && h->oh->is_func_descriptor
6577 && (h->oh->elf.root.type == bfd_link_hash_defined
6578 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6579 htab->tls_get_addr_fd = h->oh;
6580 }
6581
6582 if (htab->tls_get_addr_fd != NULL)
6583 {
6584 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6585
6586 while (h->elf.root.type == bfd_link_hash_indirect
6587 || h->elf.root.type == bfd_link_hash_warning)
6588 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6589
6590 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6591 }
6592
e1918d23 6593 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6594}
411e1bfb 6595
951fd09b
AM		 6596/* Run through all the TLS relocs looking for optimization
6597 opportunities. The linker has been hacked (see ppc64elf.em) to do
6598 a preliminary section layout so that we know the TLS segment
6599 offsets. We can't optimize earlier because some optimizations need
6600 to know the tp offset, and we need to optimize before allocating
6601 dynamic relocations. */
6602
6603bfd_boolean
4ce794b7 6604ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6605{
6606 bfd *ibfd;
6607 asection *sec;
6608 struct ppc_link_hash_table *htab;
6609
1049f94e 6610 if (info->relocatable || info->shared)
411e1bfb
AM		 6611 return TRUE;
6612
951fd09b 6613 htab = ppc_hash_table (info);
411e1bfb
AM		 6614 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6615 {
6616 Elf_Internal_Sym *locsyms = NULL;
6617
6618 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6619 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6620 {
6621 Elf_Internal_Rela *relstart, *rel, *relend;
6622 int expecting_tls_get_addr;
6623
6624 /* Read the relocations. */
4ce794b7 6625 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6626 info->keep_memory);
411e1bfb
AM		 6627 if (relstart == NULL)
6628 return FALSE;
6629
6630 expecting_tls_get_addr = 0;
6631 relend = relstart + sec->reloc_count;
6632 for (rel = relstart; rel < relend; rel++)
6633 {
6634 enum elf_ppc64_reloc_type r_type;
6635 unsigned long r_symndx;
6636 struct elf_link_hash_entry *h;
6637 Elf_Internal_Sym *sym;
6638 asection *sym_sec;
e7b938ca
AM		 6639 char *tls_mask;
6640 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6641 bfd_vma value;
951fd09b 6642 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6643
6644 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6645 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6646 r_symndx, ibfd))
6647 {
6648 err_free_rel:
6649 if (elf_section_data (sec)->relocs != relstart)
6650 free (relstart);
6651 if (locsyms != NULL
6652 && (elf_tdata (ibfd)->symtab_hdr.contents
6653 != (unsigned char *) locsyms))
6654 free (locsyms);
6655 return FALSE;
6656 }
6657
6658 if (h != NULL)
6659 {
6660 if (h->root.type != bfd_link_hash_defined
6661 && h->root.type != bfd_link_hash_defweak)
6662 continue;
6663 value = h->root.u.def.value;
6664 }
6665 else
4025353c
AM		 6666 /* Symbols referenced by TLS relocs must be of type
6667 STT_TLS. So no need for .opd local sym adjust. */
6668 value = sym->st_value;
951fd09b 6669
411e1bfb 6670 ok_tprel = FALSE;
951fd09b
AM		 6671 is_local = FALSE;
6672 if (h == NULL
f5385ebf 6673 || !h->def_dynamic)
411e1bfb 6674 {
951fd09b 6675 is_local = TRUE;
411e1bfb
AM		 6676 value += sym_sec->output_offset;
6677 value += sym_sec->output_section->vma;
e1918d23 6678 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6679 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6680 < (bfd_vma) 1 << 32);
6681 }
6682
4ce794b7 6683 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6684 switch (r_type)
6685 {
6686 case R_PPC64_GOT_TLSLD16:
6687 case R_PPC64_GOT_TLSLD16_LO:
6688 case R_PPC64_GOT_TLSLD16_HI:
6689 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6690 /* These relocs should never be against a symbol
6691 defined in a shared lib. Leave them alone if
6692 that turns out to be the case. */
e717da7e 6693 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6694 if (!is_local)
6695 continue;
6696
951fd09b
AM		 6697 /* LD -> LE */
6698 tls_set = 0;
6699 tls_clear = TLS_LD;
e7b938ca 6700 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6701 expecting_tls_get_addr = 1;
6702 break;
6703
6704 case R_PPC64_GOT_TLSGD16:
6705 case R_PPC64_GOT_TLSGD16_LO:
6706 case R_PPC64_GOT_TLSGD16_HI:
6707 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6708 if (ok_tprel)
411e1bfb
AM		 6709 /* GD -> LE */
6710 tls_set = 0;
6711 else
6712 /* GD -> IE */
951fd09b
AM		 6713 tls_set = TLS_TLS | TLS_TPRELGD;
6714 tls_clear = TLS_GD;
e7b938ca 6715 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6716 expecting_tls_get_addr = 1;
6717 break;
6718
6719 case R_PPC64_GOT_TPREL16_DS:
6720 case R_PPC64_GOT_TPREL16_LO_DS:
6721 case R_PPC64_GOT_TPREL16_HI:
6722 case R_PPC64_GOT_TPREL16_HA:
6723 expecting_tls_get_addr = 0;
6724 if (ok_tprel)
6725 {
6726 /* IE -> LE */
6727 tls_set = 0;
6728 tls_clear = TLS_TPREL;
e7b938ca 6729 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6730 break;
6731 }
6732 else
6733 continue;
6734
6735 case R_PPC64_REL14:
6736 case R_PPC64_REL14_BRTAKEN:
6737 case R_PPC64_REL14_BRNTAKEN:
6738 case R_PPC64_REL24:
6739 if (h != NULL
8387904d
AM		 6740 && (h == &htab->tls_get_addr->elf
6741 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6742 {
6743 if (!expecting_tls_get_addr
6744 && rel != relstart
6745 && ((ELF64_R_TYPE (rel[-1].r_info)
6746 == R_PPC64_TOC16)
6747 || (ELF64_R_TYPE (rel[-1].r_info)
6748 == R_PPC64_TOC16_LO)))
6749 {
6750 /* Check for toc tls entries. */
6751 char *toc_tls;
951fd09b 6752 int retval;
411e1bfb 6753
0d4792f7 6754 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6755 rel - 1, ibfd);
6756 if (retval == 0)
411e1bfb
AM		 6757 goto err_free_rel;
6758 if (toc_tls != NULL)
951fd09b 6759 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6760 }
6761
6762 if (expecting_tls_get_addr)
6763 {
6764 struct plt_entry *ent;
6765 for (ent = h->plt.plist; ent; ent = ent->next)
6766 if (ent->addend == 0)
6767 {
6768 if (ent->plt.refcount > 0)
6769 ent->plt.refcount -= 1;
6770 break;
6771 }
6772 }
6773 }
6774 expecting_tls_get_addr = 0;
6775 continue;
6776
6777 case R_PPC64_TPREL64:
6778 expecting_tls_get_addr = 0;
6779 if (ok_tprel)
6780 {
6781 /* IE -> LE */
6782 tls_set = TLS_EXPLICIT;
6783 tls_clear = TLS_TPREL;
6784 break;
6785 }
6786 else
6787 continue;
6788
6789 case R_PPC64_DTPMOD64:
6790 expecting_tls_get_addr = 0;
951fd09b
AM		 6791 if (rel + 1 < relend
6792 && (rel[1].r_info
6793 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6794 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6795 {
951fd09b 6796 if (ok_tprel)
411e1bfb 6797 /* GD -> LE */
951fd09b 6798 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6799 else
6800 /* GD -> IE */
951fd09b
AM		 6801 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6802 tls_clear = TLS_GD;
411e1bfb
AM		 6803 }
6804 else
6805 {
951fd09b
AM		 6806 if (!is_local)
6807 continue;
6808
6809 /* LD -> LE */
6810 tls_set = TLS_EXPLICIT;
6811 tls_clear = TLS_LD;
411e1bfb
AM		 6812 }
6813 break;
6814
6815 default:
6816 expecting_tls_get_addr = 0;
6817 continue;
6818 }
6819
6820 if ((tls_set & TLS_EXPLICIT) == 0)
6821 {
6822 struct got_entry *ent;
6823
6824 /* Adjust got entry for this reloc. */
6825 if (h != NULL)
6826 ent = h->got.glist;
6827 else
6828 ent = elf_local_got_ents (ibfd)[r_symndx];
6829
6830 for (; ent != NULL; ent = ent->next)
6831 if (ent->addend == rel->r_addend
e717da7e 6832 && ent->owner == ibfd
e7b938ca 6833 && ent->tls_type == tls_type)
411e1bfb
AM		 6834 break;
6835 if (ent == NULL)
6836 abort ();
6837
6838 if (tls_set == 0)
6839 {
6840 /* We managed to get rid of a got entry. */
6841 if (ent->got.refcount > 0)
6842 ent->got.refcount -= 1;
6843 }
411e1bfb 6844 }
8c1d1bb8 6845 else
411e1bfb 6846 {
8c1d1bb8
AM		 6847 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6848 we'll lose one or two dyn relocs. */
6849 if (!dec_dynrel_count (rel->r_info, sec, info,
6850 NULL, h, sym_sec))
6851 return FALSE;
6852
6853 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6854 {
6855 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6856 NULL, h, sym_sec))
6857 return FALSE;
6858 }
411e1bfb
AM		 6859 }
6860
e7b938ca
AM		 6861 *tls_mask |= tls_set;
6862 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6863 }
6864
6865 if (elf_section_data (sec)->relocs != relstart)
6866 free (relstart);
6867 }
6868
6869 if (locsyms != NULL
6870 && (elf_tdata (ibfd)->symtab_hdr.contents
6871 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6872 {
6873 if (!info->keep_memory)
411e1bfb 6874 free (locsyms);
6cdc0ccc 6875 else
411e1bfb 6876 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6877 }
1e2f5b6e 6878 }
b34976b6 6879 return TRUE;
1e2f5b6e 6880}
b34976b6 6881
c5614fa4
AM		 6882/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6883 the values of any global symbols in a toc section that has been
6884 edited. Globals in toc sections should be a rarity, so this function
6885 sets a flag if any are found in toc sections other than the one just
6886 edited, so that futher hash table traversals can be avoided. */
6887
6888struct adjust_toc_info
6889{
6890 asection *toc;
6891 unsigned long *skip;
6892 bfd_boolean global_toc_syms;
6893};
6894
6895static bfd_boolean
6896adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6897{
6898 struct ppc_link_hash_entry *eh;
6899 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6900
6901 if (h->root.type == bfd_link_hash_indirect)
6902 return TRUE;
6903
6904 if (h->root.type == bfd_link_hash_warning)
6905 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6906
6907 if (h->root.type != bfd_link_hash_defined
6908 && h->root.type != bfd_link_hash_defweak)
6909 return TRUE;
6910
6911 eh = (struct ppc_link_hash_entry *) h;
6912 if (eh->adjust_done)
6913 return TRUE;
6914
6915 if (eh->elf.root.u.def.section == toc_inf->toc)
6916 {
6917 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6918 if (skip != (unsigned long) -1)
6919 eh->elf.root.u.def.value -= skip;
6920 else
6921 {
6922 (*_bfd_error_handler)
6923 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6924 eh->elf.root.u.def.section = &bfd_abs_section;
6925 eh->elf.root.u.def.value = 0;
6926 }
6927 eh->adjust_done = 1;
6928 }
6929 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6930 toc_inf->global_toc_syms = TRUE;
6931
6932 return TRUE;
6933}
6934
6935/* Examine all relocs referencing .toc sections in order to remove
6936 unused .toc entries. */
6937
6938bfd_boolean
6939ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6940{
6941 bfd *ibfd;
6942 struct adjust_toc_info toc_inf;
6943
6944 toc_inf.global_toc_syms = TRUE;
6945 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6946 {
6947 asection *toc, *sec;
6948 Elf_Internal_Shdr *symtab_hdr;
6949 Elf_Internal_Sym *local_syms;
6950 struct elf_link_hash_entry **sym_hashes;
92b7a70f 6951 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 6952 unsigned long *skip, *drop;
6953 unsigned char *used;
6954 unsigned char *keep, last, some_unused;
6955
6956 toc = bfd_get_section_by_name (ibfd, ".toc");
6957 if (toc == NULL
92b7a70f 6958 || toc->size == 0
c5614fa4
AM		 6959 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6960 || elf_discarded_section (toc))
6961 continue;
6962
6963 local_syms = NULL;
6964 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6965 sym_hashes = elf_sym_hashes (ibfd);
6966
6967 /* Look at sections dropped from the final link. */
6968 skip = NULL;
6969 relstart = NULL;
6970 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6971 {
6972 if (sec->reloc_count == 0
6973 || !elf_discarded_section (sec)
6974 || get_opd_info (sec)
6975 || (sec->flags & SEC_ALLOC) == 0
6976 || (sec->flags & SEC_DEBUGGING) != 0)
6977 continue;
6978
6979 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6980 if (relstart == NULL)
6981 goto error_ret;
6982
6983 /* Run through the relocs to see which toc entries might be
6984 unused. */
6985 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6986 {
6987 enum elf_ppc64_reloc_type r_type;
6988 unsigned long r_symndx;
6989 asection *sym_sec;
6990 struct elf_link_hash_entry *h;
6991 Elf_Internal_Sym *sym;
6992 bfd_vma val;
6993
6994 r_type = ELF64_R_TYPE (rel->r_info);
6995 switch (r_type)
6996 {
6997 default:
6998 continue;
6999
7000 case R_PPC64_TOC16:
7001 case R_PPC64_TOC16_LO:
7002 case R_PPC64_TOC16_HI:
7003 case R_PPC64_TOC16_HA:
7004 case R_PPC64_TOC16_DS:
7005 case R_PPC64_TOC16_LO_DS:
7006 break;
7007 }
7008
7009 r_symndx = ELF64_R_SYM (rel->r_info);
7010 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7011 r_symndx, ibfd))
7012 goto error_ret;
7013
7014 if (sym_sec != toc)
7015 continue;
7016
7017 if (h != NULL)
7018 val = h->root.u.def.value;
7019 else
7020 val = sym->st_value;
7021 val += rel->r_addend;
7022
7023 if (val >= toc->size)
7024 continue;
7025
7026 /* Anything in the toc ought to be aligned to 8 bytes.
7027 If not, don't mark as unused. */
7028 if (val & 7)
7029 continue;
7030
7031 if (skip == NULL)
7032 {
7033 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7034 if (skip == NULL)
7035 goto error_ret;
7036 }
7037
7038 skip[val >> 3] = 1;
7039 }
7040
7041 if (elf_section_data (sec)->relocs != relstart)
7042 free (relstart);
7043 }
7044
7045 if (skip == NULL)
7046 continue;
7047
7048 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7049 if (used == NULL)
7050 {
7051 error_ret:
7052 if (local_syms != NULL
7053 && symtab_hdr->contents != (unsigned char *) local_syms)
7054 free (local_syms);
7055 if (sec != NULL
7056 && relstart != NULL
7057 && elf_section_data (sec)->relocs != relstart)
7058 free (relstart);
7059 if (skip != NULL)
7060 free (skip);
7061 return FALSE;
7062 }
7063
7064 /* Now check all kept sections that might reference the toc. */
7065 for (sec = ibfd->sections;
7066 sec != NULL;
7067 /* Check the toc itself last. */
7068 sec = (sec == toc ? NULL
7069 : sec->next == toc && sec->next->next ? sec->next->next
7070 : sec->next == NULL ? toc
7071 : sec->next))
7072 {
7073 int repeat;
7074
7075 if (sec->reloc_count == 0
7076 || elf_discarded_section (sec)
7077 || get_opd_info (sec)
7078 || (sec->flags & SEC_ALLOC) == 0
7079 || (sec->flags & SEC_DEBUGGING) != 0)
7080 continue;
7081
7082 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7083 if (relstart == NULL)
7084 goto error_ret;
7085
7086 /* Mark toc entries referenced as used. */
7087 repeat = 0;
7088 do
7089 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7090 {
7091 enum elf_ppc64_reloc_type r_type;
7092 unsigned long r_symndx;
7093 asection *sym_sec;
7094 struct elf_link_hash_entry *h;
7095 Elf_Internal_Sym *sym;
7096 bfd_vma val;
7097
7098 r_type = ELF64_R_TYPE (rel->r_info);
7099 switch (r_type)
7100 {
7101 case R_PPC64_TOC16:
7102 case R_PPC64_TOC16_LO:
7103 case R_PPC64_TOC16_HI:
7104 case R_PPC64_TOC16_HA:
7105 case R_PPC64_TOC16_DS:
7106 case R_PPC64_TOC16_LO_DS:
7107 /* In case we're taking addresses of toc entries. */
7108 case R_PPC64_ADDR64:
7109 break;
7110
7111 default:
7112 continue;
7113 }
7114
7115 r_symndx = ELF64_R_SYM (rel->r_info);
7116 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7117 r_symndx, ibfd))
7118 {
7119 free (used);
7120 goto error_ret;
7121 }
7122
7123 if (sym_sec != toc)
7124 continue;
7125
7126 if (h != NULL)
7127 val = h->root.u.def.value;
7128 else
7129 val = sym->st_value;
7130 val += rel->r_addend;
7131
7132 if (val >= toc->size)
7133 continue;
7134
7135 /* For the toc section, we only mark as used if
7136 this entry itself isn't unused. */
7137 if (sec == toc
7138 && !used[val >> 3]
7139 && (used[rel->r_offset >> 3]
7140 || !skip[rel->r_offset >> 3]))
7141 /* Do all the relocs again, to catch reference
7142 chains. */
7143 repeat = 1;
7144
7145 used[val >> 3] = 1;
7146 }
7147 while (repeat);
7148 }
7149
7150 /* Merge the used and skip arrays. Assume that TOC
7151 doublewords not appearing as either used or unused belong
7152 to to an entry more than one doubleword in size. */
7153 for (drop = skip, keep = used, last = 0, some_unused = 0;
7154 drop < skip + (toc->size + 7) / 8;
7155 ++drop, ++keep)
7156 {
7157 if (*keep)
7158 {
7159 *drop = 0;
7160 last = 0;
7161 }
7162 else if (*drop)
7163 {
7164 some_unused = 1;
7165 last = 1;
7166 }
7167 else
7168 *drop = last;
7169 }
7170
7171 free (used);
7172
7173 if (some_unused)
7174 {
7175 bfd_byte *contents, *src;
7176 unsigned long off;
7177
7178 /* Shuffle the toc contents, and at the same time convert the
7179 skip array from booleans into offsets. */
7180 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7181 goto error_ret;
7182
7183 elf_section_data (toc)->this_hdr.contents = contents;
7184
7185 for (src = contents, off = 0, drop = skip;
7186 src < contents + toc->size;
7187 src += 8, ++drop)
7188 {
7189 if (*drop)
7190 {
7191 *drop = (unsigned long) -1;
7192 off += 8;
7193 }
7194 else if (off != 0)
7195 {
7196 *drop = off;
7197 memcpy (src - off, src, 8);
7198 }
7199 }
7200 toc->rawsize = toc->size;
7201 toc->size = src - contents - off;
7202
92b7a70f
AM		 7203 if (toc->reloc_count != 0)
7204 {
7205 Elf_Internal_Rela *wrel;
7206 bfd_size_type sz;
c5614fa4 7207
92b7a70f
AM		 7208 /* Read toc relocs. */
7209 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7210 TRUE);
7211 if (relstart == NULL)
7212 goto error_ret;
7213
7214 /* Remove unused toc relocs, and adjust those we keep. */
7215 wrel = relstart;
7216 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7217 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7218 {
7219 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7220 wrel->r_info = rel->r_info;
7221 wrel->r_addend = rel->r_addend;
7222 ++wrel;
7223 }
8c1d1bb8
AM		 7224 else if (!dec_dynrel_count (rel->r_info, toc, info,
7225 &local_syms, NULL, NULL))
7226 goto error_ret;
35090471 7227
92b7a70f
AM		 7228 toc->reloc_count = wrel - relstart;
7229 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7230 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7231 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7232 }
c5614fa4
AM		 7233
7234 /* Adjust addends for relocs against the toc section sym. */
7235 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7236 {
7237 if (sec->reloc_count == 0
7238 || elf_discarded_section (sec))
7239 continue;
7240
7241 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7242 TRUE);
7243 if (relstart == NULL)
7244 goto error_ret;
7245
7246 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7247 {
7248 enum elf_ppc64_reloc_type r_type;
7249 unsigned long r_symndx;
7250 asection *sym_sec;
7251 struct elf_link_hash_entry *h;
7252 Elf_Internal_Sym *sym;
7253
7254 r_type = ELF64_R_TYPE (rel->r_info);
7255 switch (r_type)
7256 {
7257 default:
7258 continue;
7259
7260 case R_PPC64_TOC16:
7261 case R_PPC64_TOC16_LO:
7262 case R_PPC64_TOC16_HI:
7263 case R_PPC64_TOC16_HA:
7264 case R_PPC64_TOC16_DS:
7265 case R_PPC64_TOC16_LO_DS:
7266 case R_PPC64_ADDR64:
7267 break;
7268 }
7269
7270 r_symndx = ELF64_R_SYM (rel->r_info);
7271 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7272 r_symndx, ibfd))
7273 goto error_ret;
7274
7275 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7276 continue;
7277
7278 rel->r_addend -= skip[rel->r_addend >> 3];
7279 }
7280 }
7281
7282 /* We shouldn't have local or global symbols defined in the TOC,
7283 but handle them anyway. */
7284 if (local_syms != NULL)
7285 {
7286 Elf_Internal_Sym *sym;
7287
7288 for (sym = local_syms;
7289 sym < local_syms + symtab_hdr->sh_info;
7290 ++sym)
7291 if (sym->st_shndx != SHN_UNDEF
7292 && (sym->st_shndx < SHN_LORESERVE
7293 || sym->st_shndx > SHN_HIRESERVE)
7294 && sym->st_value != 0
7295 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7296 {
7297 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7298 sym->st_value -= skip[sym->st_value >> 3];
7299 else
7300 {
7301 (*_bfd_error_handler)
7302 (_("%s defined in removed toc entry"),
26c61ae5
L		 7303 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7304 NULL));
c5614fa4
AM		 7305 sym->st_value = 0;
7306 sym->st_shndx = SHN_ABS;
7307 }
7308 symtab_hdr->contents = (unsigned char *) local_syms;
7309 }
7310 }
7311
7312 /* Finally, adjust any global syms defined in the toc. */
7313 if (toc_inf.global_toc_syms)
7314 {
7315 toc_inf.toc = toc;
7316 toc_inf.skip = skip;
7317 toc_inf.global_toc_syms = FALSE;
7318 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7319 &toc_inf);
7320 }
7321 }
7322
7323 if (local_syms != NULL
7324 && symtab_hdr->contents != (unsigned char *) local_syms)
7325 {
7326 if (!info->keep_memory)
7327 free (local_syms);
7328 else
7329 symtab_hdr->contents = (unsigned char *) local_syms;
7330 }
7331 free (skip);
7332 }
7333
7334 return TRUE;
7335}
7336
65f38f15
AM		 7337/* Allocate space in .plt, .got and associated reloc sections for
7338 dynamic relocs. */
5bd4f169 7339
b34976b6 7340static bfd_boolean
4ce794b7 7341allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7342{
65f38f15
AM		 7343 struct bfd_link_info *info;
7344 struct ppc_link_hash_table *htab;
5bd4f169 7345 asection *s;
65f38f15
AM		 7346 struct ppc_link_hash_entry *eh;
7347 struct ppc_dyn_relocs *p;
411e1bfb 7348 struct got_entry *gent;
5bd4f169 7349
e92d460e 7350 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7351 return TRUE;
5bd4f169 7352
e92d460e
AM		 7353 if (h->root.type == bfd_link_hash_warning)
7354 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7355
65f38f15
AM		 7356 info = (struct bfd_link_info *) inf;
7357 htab = ppc_hash_table (info);
5bd4f169 7358
65f38f15 7359 if (htab->elf.dynamic_sections_created
411e1bfb 7360 && h->dynindx != -1
9c7a29a3 7361 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7362 {
411e1bfb
AM		 7363 struct plt_entry *pent;
7364 bfd_boolean doneone = FALSE;
7365 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7366 if (pent->plt.refcount > 0)
7367 {
411e1bfb
AM		 7368 /* If this is the first .plt entry, make room for the special
7369 first entry. */
4ce794b7 7370 s = htab->plt;
eea6121a
AM		 7371 if (s->size == 0)
7372 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7373
eea6121a 7374 pent->plt.offset = s->size;
411e1bfb
AM		 7375
7376 /* Make room for this entry. */
eea6121a 7377 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7378
7379 /* Make room for the .glink code. */
4ce794b7 7380 s = htab->glink;
eea6121a
AM		 7381 if (s->size == 0)
7382 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7383 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7384 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7385 s->size += 4;
7386 s->size += 2*4;
411e1bfb
AM		 7387
7388 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7389 s = htab->relplt;
eea6121a 7390 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7391 doneone = TRUE;
7392 }
7393 else
7394 pent->plt.offset = (bfd_vma) -1;
7395 if (!doneone)
65f38f15 7396 {
411e1bfb 7397 h->plt.plist = NULL;
f5385ebf 7398 h->needs_plt = 0;
65f38f15
AM		 7399 }
7400 }
7401 else
7402 {
411e1bfb 7403 h->plt.plist = NULL;
f5385ebf 7404 h->needs_plt = 0;
65f38f15
AM		 7405 }
7406
951fd09b
AM		 7407 eh = (struct ppc_link_hash_entry *) h;
7408 /* Run through the TLS GD got entries first if we're changing them
7409 to TPREL. */
e7b938ca 7410 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7411 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7412 if (gent->got.refcount > 0
7413 && (gent->tls_type & TLS_GD) != 0)
7414 {
7415 /* This was a GD entry that has been converted to TPREL. If
7416 there happens to be a TPREL entry we can use that one. */
7417 struct got_entry *ent;
7418 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7419 if (ent->got.refcount > 0
7420 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7421 && ent->addend == gent->addend
7422 && ent->owner == gent->owner)
951fd09b
AM		 7423 {
7424 gent->got.refcount = 0;
7425 break;
7426 }
7427
7428 /* If not, then we'll be using our own TPREL entry. */
7429 if (gent->got.refcount != 0)
7430 gent->tls_type = TLS_TLS | TLS_TPREL;
7431 }
7432
411e1bfb
AM		 7433 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7434 if (gent->got.refcount > 0)
7435 {
951fd09b
AM		 7436 bfd_boolean dyn;
7437
411e1bfb 7438 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7439 Undefined weak syms won't yet be marked as dynamic,
7440 nor will all TLS symbols. */
411e1bfb 7441 if (h->dynindx == -1
f5385ebf 7442 && !h->forced_local)
411e1bfb 7443 {
c152c796 7444 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7445 return FALSE;
7446 }
65f38f15 7447
d881513a 7448 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7449 && !h->def_dynamic)
411e1bfb 7450 {
e717da7e 7451 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7452 continue;
411e1bfb 7453 }
951fd09b 7454
e717da7e 7455 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7456 gent->got.offset = s->size;
7457 s->size
d881513a 7458 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7459 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7460 if ((info->shared
7461 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7462 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7463 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7464 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7465 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7466 ? 2 * sizeof (Elf64_External_Rela)
7467 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7468 }
7469 else
7470 gent->got.offset = (bfd_vma) -1;
65f38f15 7471
65f38f15 7472 if (eh->dyn_relocs == NULL)
b34976b6 7473 return TRUE;
65f38f15
AM		 7474
7475 /* In the shared -Bsymbolic case, discard space allocated for
7476 dynamic pc-relative relocs against symbols which turn out to be
7477 defined in regular objects. For the normal shared case, discard
7478 space for relocs that have become local due to symbol visibility
7479 changes. */
7480
7481 if (info->shared)
7482 {
9c7a29a3
AM		 7483 /* Relocs that use pc_count are those that appear on a call insn,
7484 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7485 generated via assembly. We want calls to protected symbols to
7486 resolve directly to the function rather than going via the plt.
7487 If people want function pointer comparisons to work as expected
7488 then they should avoid writing weird assembly. */
09695f56 7489 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7490 {
7491 struct ppc_dyn_relocs **pp;
7492
7493 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7494 {
65f38f15
AM		 7495 p->count -= p->pc_count;
7496 p->pc_count = 0;
7497 if (p->count == 0)
7498 *pp = p->next;
7499 else
7500 pp = &p->next;
5bd4f169 7501 }
65f38f15 7502 }
4e795f50
AM		 7503
7504 /* Also discard relocs on undefined weak syms with non-default
7505 visibility. */
7506 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7507 && h->root.type == bfd_link_hash_undefweak)
7508 eh->dyn_relocs = NULL;
65f38f15 7509 }
f4656909 7510 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7511 {
7512 /* For the non-shared case, discard space for relocs against
7513 symbols which turn out to need copy relocs or are not
7514 dynamic. */
7515
f5385ebf
AM		 7516 if (!h->non_got_ref
7517 && h->def_dynamic
7518 && !h->def_regular)
65f38f15
AM		 7519 {
7520 /* Make sure this symbol is output as a dynamic symbol.
7521 Undefined weak syms won't yet be marked as dynamic. */
7522 if (h->dynindx == -1
f5385ebf 7523 && !h->forced_local)
65f38f15 7524 {
c152c796 7525 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7526 return FALSE;
65f38f15
AM		 7527 }
7528
7529 /* If that succeeded, we know we'll be keeping all the
7530 relocs. */
7531 if (h->dynindx != -1)
7532 goto keep;
7533 }
7534
7535 eh->dyn_relocs = NULL;
7536
ec338859 7537 keep: ;
65f38f15
AM		 7538 }
7539
7540 /* Finally, allocate space. */
7541 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7542 {
7543 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7544 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7545 }
7546
b34976b6 7547 return TRUE;
65f38f15
AM		 7548}
7549
7550/* Find any dynamic relocs that apply to read-only sections. */
7551
b34976b6 7552static bfd_boolean
4ce794b7 7553readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7554{
7555 struct ppc_link_hash_entry *eh;
7556 struct ppc_dyn_relocs *p;
7557
e92d460e
AM		 7558 if (h->root.type == bfd_link_hash_warning)
7559 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7560
65f38f15
AM		 7561 eh = (struct ppc_link_hash_entry *) h;
7562 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7563 {
7564 asection *s = p->sec->output_section;
7565
7566 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7567 {
4ce794b7 7568 struct bfd_link_info *info = inf;
65f38f15
AM		 7569
7570 info->flags |= DF_TEXTREL;
7571
7572 /* Not an error, just cut short the traversal. */
b34976b6 7573 return FALSE;
65f38f15
AM		 7574 }
7575 }
b34976b6 7576 return TRUE;
65f38f15
AM		 7577}
7578
7579/* Set the sizes of the dynamic sections. */
7580
b34976b6 7581static bfd_boolean
4ce794b7
AM		 7582ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7583 struct bfd_link_info *info)
65f38f15
AM		 7584{
7585 struct ppc_link_hash_table *htab;
7586 bfd *dynobj;
7587 asection *s;
b34976b6 7588 bfd_boolean relocs;
65f38f15
AM		 7589 bfd *ibfd;
7590
7591 htab = ppc_hash_table (info);
7592 dynobj = htab->elf.dynobj;
7593 if (dynobj == NULL)
7594 abort ();
7595
7596 if (htab->elf.dynamic_sections_created)
7597 {
7598 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7599 if (info->executable)
65f38f15
AM		 7600 {
7601 s = bfd_get_section_by_name (dynobj, ".interp");
7602 if (s == NULL)
7603 abort ();
eea6121a 7604 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7605 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7606 }
7607 }
7608
7609 /* Set up .got offsets for local syms, and space for local dynamic
7610 relocs. */
7611 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7612 {
411e1bfb
AM		 7613 struct got_entry **lgot_ents;
7614 struct got_entry **end_lgot_ents;
e7b938ca 7615 char *lgot_masks;
65f38f15
AM		 7616 bfd_size_type locsymcount;
7617 Elf_Internal_Shdr *symtab_hdr;
7618 asection *srel;
7619
ee75fd95 7620 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7621 continue;
7622
e717da7e
AM		 7623 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7624 {
7625 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7626 ppc64_tlsld_got (ibfd)->offset = s->size;
7627 s->size += 16;
e717da7e
AM		 7628 if (info->shared)
7629 {
7630 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7631 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7632 }
7633 }
7634 else
7635 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7636
65f38f15
AM		 7637 for (s = ibfd->sections; s != NULL; s = s->next)
7638 {
ec338859 7639 struct ppc_dyn_relocs *p;
65f38f15 7640
ec338859
AM		 7641 for (p = *((struct ppc_dyn_relocs **)
7642 &elf_section_data (s)->local_dynrel);
7643 p != NULL;
7644 p = p->next)
65f38f15 7645 {
ec338859
AM		 7646 if (!bfd_is_abs_section (p->sec)
7647 && bfd_is_abs_section (p->sec->output_section))
7648 {
7649 /* Input section has been discarded, either because
7650 it is a copy of a linkonce section or due to
7651 linker script /DISCARD/, so we'll be discarding
7652 the relocs too. */
7653 }
248866a8 7654 else if (p->count != 0)
ec338859
AM		 7655 {
7656 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7657 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7658 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7659 info->flags |= DF_TEXTREL;
ec338859 7660 }
65f38f15
AM		 7661 }
7662 }
7663
411e1bfb
AM		 7664 lgot_ents = elf_local_got_ents (ibfd);
7665 if (!lgot_ents)
65f38f15
AM		 7666 continue;
7667
7668 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7669 locsymcount = symtab_hdr->sh_info;
411e1bfb 7670 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7671 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7672 s = ppc64_elf_tdata (ibfd)->got;
7673 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7674 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7675 {
411e1bfb
AM		 7676 struct got_entry *ent;
7677
7678 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7679 if (ent->got.refcount > 0)
7680 {
e7b938ca 7681 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7682 {
e717da7e 7683 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7684 {
eea6121a
AM		 7685 ppc64_tlsld_got (ibfd)->offset = s->size;
7686 s->size += 16;
411e1bfb 7687 if (info->shared)
eea6121a 7688 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7689 }
e717da7e 7690 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7691 }
7692 else
7693 {
eea6121a 7694 ent->got.offset = s->size;
e7b938ca 7695 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7696 {
eea6121a 7697 s->size += 16;
411e1bfb 7698 if (info->shared)
eea6121a 7699 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7700 }
7701 else
7702 {
eea6121a 7703 s->size += 8;
411e1bfb 7704 if (info->shared)
eea6121a 7705 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7706 }
7707 }
7708 }
7709 else
7710 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7711 }
7712 }
7713
7714 /* Allocate global sym .plt and .got entries, and space for global
7715 sym dynamic relocs. */
4ce794b7 7716 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7717
7718 /* We now have determined the sizes of the various dynamic sections.
7719 Allocate memory for them. */
b34976b6 7720 relocs = FALSE;
65f38f15
AM		 7721 for (s = dynobj->sections; s != NULL; s = s->next)
7722 {
7723 if ((s->flags & SEC_LINKER_CREATED) == 0)
7724 continue;
7725
4ce794b7 7726 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7727 /* These haven't been allocated yet; don't strip. */
7728 continue;
e717da7e
AM		 7729 else if (s == htab->got
7730 || s == htab->plt
c456f082
AM		 7731 || s == htab->glink
7732 || s == htab->dynbss)
65f38f15
AM		 7733 {
7734 /* Strip this section if we don't need it; see the
7735 comment below. */
5bd4f169 7736 }
65f38f15 7737 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7738 {
c456f082 7739 if (s->size != 0)
5bd4f169 7740 {
4ce794b7 7741 if (s != htab->relplt)
b34976b6 7742 relocs = TRUE;
5bd4f169
AM		 7743
7744 /* We use the reloc_count field as a counter if we need
7745 to copy relocs into the output file. */
7746 s->reloc_count = 0;
7747 }
7748 }
65f38f15 7749 else
5bd4f169
AM		 7750 {
7751 /* It's not one of our sections, so don't allocate space. */
7752 continue;
7753 }
7754
eea6121a 7755 if (s->size == 0)
5bd4f169 7756 {
c456f082
AM		 7757 /* If we don't need this section, strip it from the
7758 output file. This is mostly to handle .rela.bss and
7759 .rela.plt. We must create both sections in
7760 create_dynamic_sections, because they must be created
7761 before the linker maps input sections to output
7762 sections. The linker does that before
7763 adjust_dynamic_symbol is called, and it is that
7764 function which decides whether anything needs to go
7765 into these sections. */
8423293d 7766 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 7767 continue;
7768 }
7769
c456f082 7770 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 7771 continue;
7772
65f38f15
AM		 7773 /* Allocate memory for the section contents. We use bfd_zalloc
7774 here in case unused entries are not reclaimed before the
7775 section's contents are written out. This should not happen,
411e1bfb
AM		 7776 but this way if it does we get a R_PPC64_NONE reloc in .rela
7777 sections instead of garbage.
7778 We also rely on the section contents being zero when writing
7779 the GOT. */
eea6121a 7780 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7781 if (s->contents == NULL)
b34976b6 7782 return FALSE;
5bd4f169
AM		 7783 }
7784
e717da7e
AM		 7785 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7786 {
ee75fd95 7787 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7788 continue;
7789
e717da7e
AM		 7790 s = ppc64_elf_tdata (ibfd)->got;
7791 if (s != NULL && s != htab->got)
7792 {
eea6121a 7793 if (s->size == 0)
8423293d 7794 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7795 else
7796 {
eea6121a 7797 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7798 if (s->contents == NULL)
7799 return FALSE;
7800 }
7801 }
7802 s = ppc64_elf_tdata (ibfd)->relgot;
7803 if (s != NULL)
7804 {
eea6121a 7805 if (s->size == 0)
8423293d 7806 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7807 else
7808 {
eea6121a 7809 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7810 if (s->contents == NULL)
7811 return FALSE;
7812 relocs = TRUE;
7813 s->reloc_count = 0;
7814 }
7815 }
7816 }
7817
e86ce104 7818 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7819 {
7820 /* Add some entries to the .dynamic section. We fill in the
7821 values later, in ppc64_elf_finish_dynamic_sections, but we
7822 must add the entries now so that we get the correct size for
7823 the .dynamic section. The DT_DEBUG entry is filled in by the
7824 dynamic linker and used by the debugger. */
dc810e39 7825#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7826 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7827
36af4a4e 7828 if (info->executable)
5bd4f169 7829 {
dc810e39 7830 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7831 return FALSE;
5bd4f169
AM		 7832 }
7833
eea6121a 7834 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7835 {
dc810e39
AM		 7836 if (!add_dynamic_entry (DT_PLTGOT, 0)
7837 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7838 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7839 || !add_dynamic_entry (DT_JMPREL, 0)
7840 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7841 return FALSE;
5bd4f169
AM		 7842 }
7843
19397422
AM		 7844 if (NO_OPD_RELOCS)
7845 {
7846 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7847 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7848 return FALSE;
19397422
AM		 7849 }
7850
5bd4f169
AM		 7851 if (relocs)
7852 {
dc810e39
AM		 7853 if (!add_dynamic_entry (DT_RELA, 0)
7854 || !add_dynamic_entry (DT_RELASZ, 0)
7855 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7856 return FALSE;
5bd4f169 7857
65f38f15
AM		 7858 /* If any dynamic relocs apply to a read-only section,
7859 then we need a DT_TEXTREL entry. */
248866a8 7860 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7861 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7862
65f38f15 7863 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7864 {
65f38f15 7865 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7866 return FALSE;
5bd4f169 7867 }
5bd4f169 7868 }
5bd4f169 7869 }
65f38f15 7870#undef add_dynamic_entry
5bd4f169 7871
b34976b6 7872 return TRUE;
5bd4f169
AM		 7873}
7874
721956f4 7875/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7876
4ce794b7
AM		 7877static inline enum ppc_stub_type
7878ppc_type_of_stub (asection *input_sec,
7879 const Elf_Internal_Rela *rel,
7880 struct ppc_link_hash_entry **hash,
7881 bfd_vma destination)
5bd4f169 7882{
721956f4
AM		 7883 struct ppc_link_hash_entry *h = *hash;
7884 bfd_vma location;
7885 bfd_vma branch_offset;
7886 bfd_vma max_branch_offset;
4ce794b7 7887 enum elf_ppc64_reloc_type r_type;
5bd4f169 7888
721956f4
AM		 7889 if (h != NULL)
7890 {
7891 if (h->oh != NULL
8387904d
AM		 7892 && h->oh->is_func_descriptor)
7893 h = h->oh;
7894
7895 if (h->elf.dynindx != -1)
5bd4f169 7896 {
411e1bfb 7897 struct plt_entry *ent;
8387904d
AM		 7898
7899 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7900 if (ent->addend == rel->r_addend
7901 && ent->plt.offset != (bfd_vma) -1)
7902 {
8387904d 7903 *hash = h;
411e1bfb
AM		 7904 return ppc_stub_plt_call;
7905 }
5bd4f169
AM		 7906 }
7907
ee7de3e6
AM		 7908 if (!(h->elf.root.type == bfd_link_hash_defined
7909 || h->elf.root.type == bfd_link_hash_defweak)
7910 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7911 return ppc_stub_none;
5d1634d7 7912 }
5d1634d7 7913
721956f4
AM		 7914 /* Determine where the call point is. */
7915 location = (input_sec->output_offset
7916 + input_sec->output_section->vma
7917 + rel->r_offset);
5d1634d7 7918
721956f4
AM		 7919 branch_offset = destination - location;
7920 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7921
721956f4
AM		 7922 /* Determine if a long branch stub is needed. */
7923 max_branch_offset = 1 << 25;
4ce794b7 7924 if (r_type != R_PPC64_REL24)
721956f4 7925 max_branch_offset = 1 << 15;
5d1634d7 7926
721956f4
AM		 7927 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7928 /* We need a stub. Figure out whether a long_branch or plt_branch
7929 is needed later. */
7930 return ppc_stub_long_branch;
5d1634d7 7931
721956f4 7932 return ppc_stub_none;
5d1634d7
AM		 7933}
7934
7935/* Build a .plt call stub. */
7936
4ce794b7
AM		 7937static inline bfd_byte *
7938build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7939{
7940#define PPC_LO(v) ((v) & 0xffff)
7941#define PPC_HI(v) (((v) >> 16) & 0xffff)
7942#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7943
5d1634d7 7944 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7945 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7946 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7947 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7948 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7949 offset += 8;
7950 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7951 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7952 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7953 offset += 8;
7954 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7955 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7956 bfd_put_32 (obfd, BCTR, p), p += 4;
7957 return p;
7958}
7959
b34976b6 7960static bfd_boolean
4ce794b7 7961ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7962{
721956f4
AM		 7963 struct ppc_stub_hash_entry *stub_entry;
7964 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7965 struct bfd_link_info *info;
7966 struct ppc_link_hash_table *htab;
721956f4
AM		 7967 bfd_byte *loc;
7968 bfd_byte *p;
7969 unsigned int indx;
411e1bfb 7970 struct plt_entry *ent;
ee75fd95 7971 bfd_vma dest, off;
721956f4 7972 int size;
5d1634d7 7973
721956f4
AM		 7974 /* Massage our args to the form they really have. */
7975 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7976 info = in_arg;
5d1634d7 7977
5d1634d7
AM		 7978 htab = ppc_hash_table (info);
7979
721956f4 7980 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7981 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7982 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7983
4ce794b7 7984 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7985 switch (stub_entry->stub_type)
5d1634d7 7986 {
721956f4 7987 case ppc_stub_long_branch:
ad8e1ba5 7988 case ppc_stub_long_branch_r2off:
721956f4 7989 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7990 off = dest = (stub_entry->target_value
7991 + stub_entry->target_section->output_offset
7992 + stub_entry->target_section->output_section->vma);
5d1634d7 7993
721956f4
AM		 7994 /* And this is where we are coming from. */
7995 off -= (stub_entry->stub_offset
97b639ba
AM		 7996 + stub_entry->stub_sec->output_offset
7997 + stub_entry->stub_sec->output_section->vma);
e86ce104 7998
ad8e1ba5
AM		 7999 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8000 size = 4;
8001 else
8002 {
8003 bfd_vma r2off;
8004
8005 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8006 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8007 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8008 loc += 4;
97b639ba 8009 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8010 loc += 4;
97b639ba 8011 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8012 loc += 4;
8013 off -= 12;
8014 size = 16;
8015 }
97b639ba 8016 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 8017
8018 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 8019
8020 if (info->emitrelocations)
8021 {
8022 Elf_Internal_Rela *relocs, *r;
8023 struct bfd_elf_section_data *elfsec_data;
8024
8025 elfsec_data = elf_section_data (stub_entry->stub_sec);
8026 relocs = elfsec_data->relocs;
8027 if (relocs == NULL)
8028 {
8029 bfd_size_type relsize;
8030 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8031 relocs = bfd_alloc (htab->stub_bfd, relsize);
8032 if (relocs == NULL)
8033 return FALSE;
8034 elfsec_data->relocs = relocs;
8035 elfsec_data->rel_hdr.sh_size = relsize;
8036 elfsec_data->rel_hdr.sh_entsize = 24;
8037 stub_entry->stub_sec->reloc_count = 0;
8038 }
8039 r = relocs + stub_entry->stub_sec->reloc_count;
8040 stub_entry->stub_sec->reloc_count += 1;
8041 r->r_offset = loc - stub_entry->stub_sec->contents;
8042 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8043 r->r_addend = dest;
8044 if (stub_entry->h != NULL)
8045 {
8046 struct elf_link_hash_entry **hashes;
8047 unsigned long symndx;
8048 struct ppc_link_hash_entry *h;
8049
8050 hashes = elf_sym_hashes (htab->stub_bfd);
8051 if (hashes == NULL)
8052 {
8053 bfd_size_type hsize;
8054
8055 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8056 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8057 if (hashes == NULL)
8058 return FALSE;
8059 elf_sym_hashes (htab->stub_bfd) = hashes;
8060 htab->stub_globals = 1;
8061 }
8062 symndx = htab->stub_globals++;
8063 h = stub_entry->h;
8064 hashes[symndx] = &h->elf;
8065 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8066 if (h->oh != NULL && h->oh->is_func)
8067 h = h->oh;
8068 if (h->elf.root.u.def.section != stub_entry->target_section)
8069 /* H is an opd symbol. The addend must be zero. */
8070 r->r_addend = 0;
8071 else
8072 {
8073 off = (h->elf.root.u.def.value
8074 + h->elf.root.u.def.section->output_offset
8075 + h->elf.root.u.def.section->output_section->vma);
8076 r->r_addend -= off;
8077 }
8078 }
8079 }
721956f4 8080 break;
e86ce104 8081
721956f4 8082 case ppc_stub_plt_branch:
ad8e1ba5 8083 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8084 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8085 stub_entry->root.string + 9,
b34976b6 8086 FALSE, FALSE);
721956f4
AM		 8087 if (br_entry == NULL)
8088 {
8089 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8090 stub_entry->root.string + 9);
b34976b6
AM		 8091 htab->stub_error = TRUE;
8092 return FALSE;
721956f4
AM		 8093 }
8094
8095 off = (stub_entry->target_value
8096 + stub_entry->target_section->output_offset
8097 + stub_entry->target_section->output_section->vma);
8098
4ce794b7
AM		 8099 bfd_put_64 (htab->brlt->owner, off,
8100 htab->brlt->contents + br_entry->offset);
721956f4 8101
ee75fd95 8102 if (htab->relbrlt != NULL)
721956f4
AM		 8103 {
8104 /* Create a reloc for the branch lookup table entry. */
8105 Elf_Internal_Rela rela;
ad8e1ba5 8106 bfd_byte *rl;
5d1634d7 8107
721956f4 8108 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8109 + htab->brlt->output_offset
8110 + htab->brlt->output_section->vma);
721956f4
AM		 8111 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8112 rela.r_addend = off;
8113
4ce794b7
AM		 8114 rl = htab->relbrlt->contents;
8115 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8116 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 8117 }
8118
8119 off = (br_entry->offset
4ce794b7
AM		 8120 + htab->brlt->output_offset
8121 + htab->brlt->output_section->vma
8122 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8123 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8124
ad8e1ba5 8125 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8126 {
8127 (*_bfd_error_handler)
e86ce104 8128 (_("linkage table error against `%s'"),
721956f4 8129 stub_entry->root.string);
5d1634d7 8130 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8131 htab->stub_error = TRUE;
8132 return FALSE;
5d1634d7 8133 }
41bd81ab 8134
721956f4 8135 indx = off;
ad8e1ba5
AM		 8136 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8137 {
97b639ba 8138 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8139 loc += 4;
97b639ba 8140 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 8141 size = 16;
8142 }
8143 else
8144 {
8145 bfd_vma r2off;
8146
8147 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8148 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8149 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8150 loc += 4;
97b639ba 8151 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8152 loc += 4;
97b639ba 8153 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8154 loc += 4;
97b639ba 8155 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8156 loc += 4;
97b639ba 8157 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8158 size = 28;
8159 }
8160 loc += 4;
97b639ba 8161 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8162 loc += 4;
97b639ba 8163 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8164 break;
5d1634d7 8165
721956f4 8166 case ppc_stub_plt_call:
c862ae31
AM		 8167 /* Do the best we can for shared libraries built without
8168 exporting ".foo" for each "foo". This can happen when symbol
8169 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8170 if (stub_entry->h->oh != NULL
8171 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8172 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8173 {
8174 /* Point the symbol at the stub. There may be multiple stubs,
8175 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8176 defined somewhere. Maybe defining the symbol in the stub
8177 section is a silly idea. If we didn't do this, htab->top_id
8178 could disappear. */
34814b9f
AM		 8179 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8180 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8181 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8182 }
8183
721956f4 8184 /* Now build the stub. */
411e1bfb
AM		 8185 off = (bfd_vma) -1;
8186 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8187 if (ent->addend == stub_entry->addend)
8188 {
8189 off = ent->plt.offset;
8190 break;
8191 }
721956f4
AM		 8192 if (off >= (bfd_vma) -2)
8193 abort ();
8194
8195 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8196 off += (htab->plt->output_offset
8197 + htab->plt->output_section->vma
8198 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8199 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8200
ad8e1ba5 8201 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8202 {
8203 (*_bfd_error_handler)
8204 (_("linkage table error against `%s'"),
8205 stub_entry->h->elf.root.root.string);
8206 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8207 htab->stub_error = TRUE;
8208 return FALSE;
721956f4
AM		 8209 }
8210
97b639ba 8211 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8212 size = p - loc;
8213 break;
8214
8215 default:
8216 BFD_FAIL ();
b34976b6 8217 return FALSE;
721956f4
AM		 8218 }
8219
eea6121a 8220 stub_entry->stub_sec->size += size;
97b639ba 8221
ee75fd95 8222 if (htab->emit_stub_syms)
97b639ba
AM		 8223 {
8224 struct elf_link_hash_entry *h;
ee75fd95
AM		 8225 size_t len1, len2;
8226 char *name;
8227 const char *const stub_str[] = { "long_branch",
8228 "long_branch_r2off",
8229 "plt_branch",
8230 "plt_branch_r2off",
8231 "plt_call" };
8232
8233 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8234 len2 = strlen (stub_entry->root.string);
8235 name = bfd_malloc (len1 + len2 + 2);
8236 if (name == NULL)
8237 return FALSE;
8238 memcpy (name, stub_entry->root.string, 9);
8239 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8240 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8241 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8242 if (h == NULL)
8243 return FALSE;
8244 if (h->root.type == bfd_link_hash_new)
8245 {
8246 h->root.type = bfd_link_hash_defined;
8247 h->root.u.def.section = stub_entry->stub_sec;
8248 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8249 h->ref_regular = 1;
8250 h->def_regular = 1;
8251 h->ref_regular_nonweak = 1;
8252 h->forced_local = 1;
8253 h->non_elf = 0;
97b639ba
AM		 8254 }
8255 }
8256
b34976b6 8257 return TRUE;
721956f4
AM		 8258}
8259
8260/* As above, but don't actually build the stub. Just bump offset so
8261 we know stub section sizes, and select plt_branch stubs where
8262 long_branch stubs won't do. */
8263
b34976b6 8264static bfd_boolean
4ce794b7 8265ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8266{
8267 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8268 struct bfd_link_info *info;
721956f4
AM		 8269 struct ppc_link_hash_table *htab;
8270 bfd_vma off;
8271 int size;
8272
8273 /* Massage our args to the form they really have. */
8274 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8275 info = in_arg;
8276
8277 htab = ppc_hash_table (info);
721956f4
AM		 8278
8279 if (stub_entry->stub_type == ppc_stub_plt_call)
8280 {
411e1bfb 8281 struct plt_entry *ent;
58ac9f71 8282 off = (bfd_vma) -1;
411e1bfb
AM		 8283 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8284 if (ent->addend == stub_entry->addend)
8285 {
8286 off = ent->plt.offset & ~(bfd_vma) 1;
8287 break;
8288 }
58ac9f71 8289 if (off >= (bfd_vma) -2)
411e1bfb 8290 abort ();
4ce794b7
AM		 8291 off += (htab->plt->output_offset
8292 + htab->plt->output_section->vma
8293 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8294 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8295
ad8e1ba5 8296 size = PLT_CALL_STUB_SIZE;
4ce794b7 8297 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8298 size += 4;
8299 }
8300 else
8301 {
ad8e1ba5
AM		 8302 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8303 variants. */
721956f4
AM		 8304 off = (stub_entry->target_value
8305 + stub_entry->target_section->output_offset
8306 + stub_entry->target_section->output_section->vma);
eea6121a 8307 off -= (stub_entry->stub_sec->size
721956f4
AM		 8308 + stub_entry->stub_sec->output_offset
8309 + stub_entry->stub_sec->output_section->vma);
8310
ad8e1ba5
AM		 8311 /* Reset the stub type from the plt variant in case we now
8312 can reach with a shorter stub. */
8313 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8314 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8315
8316 size = 4;
8317 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8318 {
8319 off -= 12;
8320 size = 16;
8321 }
8322
8323 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8324 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8325 {
8326 struct ppc_branch_hash_entry *br_entry;
8327
8328 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8329 stub_entry->root.string + 9,
b34976b6 8330 TRUE, FALSE);
721956f4
AM		 8331 if (br_entry == NULL)
8332 {
8333 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8334 stub_entry->root.string + 9);
b34976b6
AM		 8335 htab->stub_error = TRUE;
8336 return FALSE;
721956f4
AM		 8337 }
8338
8339 if (br_entry->iter != htab->stub_iteration)
8340 {
8341 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8342 br_entry->offset = htab->brlt->size;
8343 htab->brlt->size += 8;
63bc6f6c 8344
ee75fd95 8345 if (htab->relbrlt != NULL)
eea6121a 8346 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8347 }
ad8e1ba5
AM		 8348
8349 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8350 size = 16;
ad8e1ba5
AM		 8351 if (stub_entry->stub_type != ppc_stub_plt_branch)
8352 size = 28;
721956f4 8353 }
ee75fd95
AM		 8354
8355 if (info->emitrelocations
8356 && (stub_entry->stub_type == ppc_stub_long_branch
8357 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8358 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8359 }
8360
eea6121a 8361 stub_entry->stub_sec->size += size;
b34976b6 8362 return TRUE;
721956f4
AM		 8363}
8364
8365/* Set up various things so that we can make a list of input sections
8366 for each output section included in the link. Returns -1 on error,
cedb70c5 8367 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8368
8369int
4c52953f
AM		 8370ppc64_elf_setup_section_lists (bfd *output_bfd,
8371 struct bfd_link_info *info,
8372 int no_multi_toc)
721956f4
AM		 8373{
8374 bfd *input_bfd;
734b6cf9 8375 int top_id, top_index, id;
721956f4 8376 asection *section;
734b6cf9 8377 asection **input_list;
721956f4
AM		 8378 bfd_size_type amt;
8379 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8380
4c52953f
AM		 8381 htab->no_multi_toc = no_multi_toc;
8382
4ce794b7 8383 if (htab->brlt == NULL)
721956f4
AM		 8384 return 0;
8385
1e2f5b6e 8386 /* Find the top input section id. */
3d6f9012 8387 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8388 input_bfd != NULL;
8389 input_bfd = input_bfd->link_next)
8390 {
721956f4
AM		 8391 for (section = input_bfd->sections;
8392 section != NULL;
8393 section = section->next)
8394 {
8395 if (top_id < section->id)
8396 top_id = section->id;
8397 }
8398 }
721956f4 8399
8f3bab57 8400 htab->top_id = top_id;
721956f4 8401 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8402 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8403 if (htab->stub_group == NULL)
8404 return -1;
8405
3d6f9012
AM		 8406 /* Set toc_off for com, und, abs and ind sections. */
8407 for (id = 0; id < 3; id++)
8408 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8409
3d6f9012 8410 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8411
8412 /* We can't use output_bfd->section_count here to find the top output
8413 section index as some sections may have been removed, and
8423293d 8414 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8415 for (section = output_bfd->sections, top_index = 0;
8416 section != NULL;
8417 section = section->next)
8418 {
8419 if (top_index < section->index)
8420 top_index = section->index;
8421 }
8422
8423 htab->top_index = top_index;
8424 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8425 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8426 htab->input_list = input_list;
8427 if (input_list == NULL)
8428 return -1;
8429
721956f4
AM		 8430 return 1;
8431}
8432
e717da7e
AM		 8433/* The linker repeatedly calls this function for each TOC input section
8434 and linker generated GOT section. Group input bfds such that the toc
8435 within a group is less than 64k in size. Will break with cute linker
8436 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8437
8438void
4ce794b7 8439ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8440{
8441 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8442
4c52953f
AM		 8443 if (!htab->no_multi_toc)
8444 {
8445 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8446 bfd_vma off = addr - htab->toc_curr;
8447
8448 if (off + isec->size > 0x10000)
8449 htab->toc_curr = addr;
99877b66 8450
4c52953f
AM		 8451 elf_gp (isec->owner) = (htab->toc_curr
8452 - elf_gp (isec->output_section->owner)
8453 + TOC_BASE_OFF);
8454 }
ad8e1ba5
AM		 8455}
8456
8457/* Called after the last call to the above function. */
8458
8459void
4c52953f 8460ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8461{
8462 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8463
4c52953f
AM		 8464 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8465
ad8e1ba5
AM		 8466 /* toc_curr tracks the TOC offset used for code sections below in
8467 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8468 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8469}
8470
9b5ecbd0
AM		 8471/* No toc references were found in ISEC. If the code in ISEC makes no
8472 calls, then there's no need to use toc adjusting stubs when branching
8473 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8474 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8475 needed, and 2 if a cyclical call-graph was found but no other reason
8476 for a stub was detected. If called from the top level, a return of
8477 2 means the same as a return of 0. */
9b5ecbd0
AM		 8478
8479static int
4ce794b7 8480toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8481{
4c52953f
AM		 8482 Elf_Internal_Rela *relstart, *rel;
8483 Elf_Internal_Sym *local_syms;
9b5ecbd0 8484 int ret;
4c52953f 8485 struct ppc_link_hash_table *htab;
9b5ecbd0 8486
772119ce
AM		 8487 /* We know none of our code bearing sections will need toc stubs. */
8488 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8489 return 0;
8490
eea6121a 8491 if (isec->size == 0)
082c50f8
AM		 8492 return 0;
8493
4c52953f
AM		 8494 if (isec->output_section == NULL)
8495 return 0;
8496
9b5ecbd0
AM		 8497 /* Hack for linux kernel. .fixup contains branches, but only back to
8498 the function that hit an exception. */
4c52953f
AM		 8499 if (strcmp (isec->name, ".fixup") == 0)
8500 return 0;
9b5ecbd0 8501
4c52953f
AM		 8502 if (isec->reloc_count == 0)
8503 return 0;
8504
8505 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8506 info->keep_memory);
8507 if (relstart == NULL)
8508 return -1;
8509
8510 /* Look for branches to outside of this section. */
8511 local_syms = NULL;
8512 ret = 0;
8513 htab = ppc_hash_table (info);
8514 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8515 {
4c52953f
AM		 8516 enum elf_ppc64_reloc_type r_type;
8517 unsigned long r_symndx;
8518 struct elf_link_hash_entry *h;
8519 Elf_Internal_Sym *sym;
8520 asection *sym_sec;
8521 long *opd_adjust;
8522 bfd_vma sym_value;
8523 bfd_vma dest;
8524
8525 r_type = ELF64_R_TYPE (rel->r_info);
8526 if (r_type != R_PPC64_REL24
8527 && r_type != R_PPC64_REL14
8528 && r_type != R_PPC64_REL14_BRTAKEN
8529 && r_type != R_PPC64_REL14_BRNTAKEN)
8530 continue;
8531
8532 r_symndx = ELF64_R_SYM (rel->r_info);
8533 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8534 isec->owner))
9b5ecbd0 8535 {
4c52953f
AM		 8536 ret = -1;
8537 break;
9b5ecbd0 8538 }
9b5ecbd0 8539
2917689a
AM		 8540 /* Calls to dynamic lib functions go through a plt call stub
8541 that uses r2. Branches to undefined symbols might be a call
8542 using old-style dot symbols that can be satisfied by a plt
8543 call into a new-style dynamic library. */
4c52953f 8544 if (sym_sec == NULL)
2917689a
AM		 8545 {
8546 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8547 if (eh != NULL
8548 && eh->oh != NULL
8549 && eh->oh->elf.plt.plist != NULL)
8550 {
8551 ret = 1;
8552 break;
8553 }
4c52953f 8554
2917689a
AM		 8555 /* Ignore other undefined symbols. */
8556 continue;
8557 }
8558
8559 /* Assume branches to other sections not included in the link need
8560 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8561 if (sym_sec->output_section == NULL)
8562 {
8563 ret = 1;
8564 break;
8565 }
8566
8567 if (h == NULL)
8568 sym_value = sym->st_value;
8569 else
8570 {
8571 if (h->root.type != bfd_link_hash_defined
8572 && h->root.type != bfd_link_hash_defweak)
8573 abort ();
8574 sym_value = h->root.u.def.value;
8575 }
8576 sym_value += rel->r_addend;
8577
8578 /* If this branch reloc uses an opd sym, find the code section. */
8579 opd_adjust = get_opd_info (sym_sec);
8580 if (opd_adjust != NULL)
8581 {
4c52953f
AM		 8582 if (h == NULL)
8583 {
8584 long adjust;
8585
8586 adjust = opd_adjust[sym->st_value / 8];
8587 if (adjust == -1)
8588 /* Assume deleted functions won't ever be called. */
8589 continue;
8590 sym_value += adjust;
8591 }
8592
8593 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8594 if (dest == (bfd_vma) -1)
8595 continue;
8596 }
8597 else
8598 dest = (sym_value
8599 + sym_sec->output_offset
8600 + sym_sec->output_section->vma);
8601
8602 /* Ignore branch to self. */
8603 if (sym_sec == isec)
8604 continue;
8605
8606 /* If the called function uses the toc, we need a stub. */
8607 if (sym_sec->has_toc_reloc
8608 || sym_sec->makes_toc_func_call)
8609 {
8610 ret = 1;
8611 break;
8612 }
8613
8614 /* Assume any branch that needs a long branch stub might in fact
8615 need a plt_branch stub. A plt_branch stub uses r2. */
8616 else if (dest - (isec->output_offset
8617 + isec->output_section->vma
8618 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8619 {
8620 ret = 1;
8621 break;
8622 }
4c52953f
AM		 8623
8624 /* If calling back to a section in the process of being tested, we
8625 can't say for sure that no toc adjusting stubs are needed, so
8626 don't return zero. */
8627 else if (sym_sec->call_check_in_progress)
8628 ret = 2;
8629
8630 /* Branches to another section that itself doesn't have any TOC
8631 references are OK. Recursively call ourselves to check. */
8632 else if (sym_sec->id <= htab->top_id
8633 && htab->stub_group[sym_sec->id].toc_off == 0)
8634 {
8635 int recur;
8636
8637 /* Mark current section as indeterminate, so that other
8638 sections that call back to current won't be marked as
8639 known. */
8640 isec->call_check_in_progress = 1;
8641 recur = toc_adjusting_stub_needed (info, sym_sec);
8642 isec->call_check_in_progress = 0;
8643
8644 if (recur < 0)
8645 {
8646 /* An error. Exit. */
8647 ret = -1;
8648 break;
8649 }
8650 else if (recur <= 1)
8651 {
8652 /* Known result. Mark as checked and set section flag. */
8653 htab->stub_group[sym_sec->id].toc_off = 1;
8654 if (recur != 0)
8655 {
8656 sym_sec->makes_toc_func_call = 1;
8657 ret = 1;
8658 break;
8659 }
8660 }
8661 else
8662 {
8663 /* Unknown result. Continue checking. */
8664 ret = 2;
8665 }
8666 }
9b5ecbd0
AM		 8667 }
8668
4c52953f
AM		 8669 if (local_syms != NULL
8670 && (elf_tdata (isec->owner)->symtab_hdr.contents
8671 != (unsigned char *) local_syms))
8672 free (local_syms);
8673 if (elf_section_data (isec)->relocs != relstart)
8674 free (relstart);
8675
9b5ecbd0
AM		 8676 return ret;
8677}
8678
721956f4
AM		 8679/* The linker repeatedly calls this function for each input section,
8680 in the order that input sections are linked into output sections.
8681 Build lists of input sections to determine groupings between which
8682 we may insert linker stubs. */
8683
9b5ecbd0 8684bfd_boolean
4ce794b7 8685ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8686{
8687 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8688
734b6cf9
AM		 8689 if ((isec->output_section->flags & SEC_CODE) != 0
8690 && isec->output_section->index <= htab->top_index)
721956f4 8691 {
734b6cf9 8692 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8693 /* Steal the link_sec pointer for our list. */
721956f4 8694#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8695 /* This happens to make the list in reverse order,
8696 which is what we want. */
734b6cf9
AM		 8697 PREV_SEC (isec) = *list;
8698 *list = isec;
721956f4 8699 }
ad8e1ba5 8700
4c52953f 8701 if (htab->multi_toc_needed)
9b5ecbd0 8702 {
4c52953f
AM		 8703 /* If a code section has a function that uses the TOC then we need
8704 to use the right TOC (obviously). Also, make sure that .opd gets
8705 the correct TOC value for R_PPC64_TOC relocs that don't have or
8706 can't find their function symbol (shouldn't ever happen now). */
8707 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8708 {
8709 if (elf_gp (isec->owner) != 0)
8710 htab->toc_curr = elf_gp (isec->owner);
8711 }
8712 else if (htab->stub_group[isec->id].toc_off == 0)
8713 {
8714 int ret = toc_adjusting_stub_needed (info, isec);
8715 if (ret < 0)
8716 return FALSE;
8717 else
8718 isec->makes_toc_func_call = ret & 1;
8719 }
9b5ecbd0 8720 }
ad8e1ba5
AM		 8721
8722 /* Functions that don't use the TOC can belong in any TOC group.
8723 Use the last TOC base. This happens to make _init and _fini
8724 pasting work. */
8725 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8726 return TRUE;
721956f4
AM		 8727}
8728
8729/* See whether we can group stub sections together. Grouping stub
8730 sections may result in fewer stubs. More importantly, we need to
8731 put all .init* and .fini* stubs at the beginning of the .init or
8732 .fini output sections respectively, because glibc splits the
8733 _init and _fini functions into multiple parts. Putting a stub in
8734 the middle of a function is not a good idea. */
8735
8736static void
4ce794b7
AM		 8737group_sections (struct ppc_link_hash_table *htab,
8738 bfd_size_type stub_group_size,
8739 bfd_boolean stubs_always_before_branch)
721956f4 8740{
734b6cf9
AM		 8741 asection **list = htab->input_list + htab->top_index;
8742 do
721956f4 8743 {
734b6cf9
AM		 8744 asection *tail = *list;
8745 while (tail != NULL)
721956f4 8746 {
734b6cf9
AM		 8747 asection *curr;
8748 asection *prev;
8749 bfd_size_type total;
8750 bfd_boolean big_sec;
8751 bfd_vma curr_toc;
8752
8753 curr = tail;
eea6121a 8754 total = tail->size;
734b6cf9
AM		 8755 big_sec = total >= stub_group_size;
8756 curr_toc = htab->stub_group[tail->id].toc_off;
8757
8758 while ((prev = PREV_SEC (curr)) != NULL
8759 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8760 < stub_group_size)
8761 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8762 curr = prev;
8763
8764 /* OK, the size from the start of CURR to the end is less
8765 than stub_group_size and thus can be handled by one stub
8766 section. (or the tail section is itself larger than
8767 stub_group_size, in which case we may be toast.) We
8768 should really be keeping track of the total size of stubs
8769 added here, as stubs contribute to the final output
8770 section size. That's a little tricky, and this way will
8771 only break if stubs added make the total size more than
8772 2^25, ie. for the default stub_group_size, if stubs total
8773 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8774 do
721956f4
AM		 8775 {
8776 prev = PREV_SEC (tail);
734b6cf9 8777 /* Set up this stub group. */
721956f4
AM		 8778 htab->stub_group[tail->id].link_sec = curr;
8779 }
734b6cf9
AM		 8780 while (tail != curr && (tail = prev) != NULL);
8781
8782 /* But wait, there's more! Input sections up to stub_group_size
8783 bytes before the stub section can be handled by it too.
8784 Don't do this if we have a really large section after the
8785 stubs, as adding more stubs increases the chance that
8786 branches may not reach into the stub section. */
8787 if (!stubs_always_before_branch && !big_sec)
8788 {
8789 total = 0;
8790 while (prev != NULL
8791 && ((total += tail->output_offset - prev->output_offset)
8792 < stub_group_size)
8793 && htab->stub_group[prev->id].toc_off == curr_toc)
8794 {
8795 tail = prev;
8796 prev = PREV_SEC (tail);
8797 htab->stub_group[tail->id].link_sec = curr;
8798 }
8799 }
8800 tail = prev;
721956f4
AM		 8801 }
8802 }
734b6cf9
AM		 8803 while (list-- != htab->input_list);
8804 free (htab->input_list);
721956f4
AM		 8805#undef PREV_SEC
8806}
8807
721956f4
AM		 8808/* Determine and set the size of the stub section for a final link.
8809
8810 The basic idea here is to examine all the relocations looking for
8811 PC-relative calls to a target that is unreachable with a "bl"
8812 instruction. */
8813
b34976b6 8814bfd_boolean
4ce794b7 8815ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8816 struct bfd_link_info *info,
8817 bfd_signed_vma group_size,
8818 asection *(*add_stub_section) (const char *, asection *),
8819 void (*layout_sections_again) (void))
721956f4
AM		 8820{
8821 bfd_size_type stub_group_size;
b34976b6 8822 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8823 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8824
8825 /* Stash our params away. */
721956f4
AM		 8826 htab->add_stub_section = add_stub_section;
8827 htab->layout_sections_again = layout_sections_again;
8828 stubs_always_before_branch = group_size < 0;
8829 if (group_size < 0)
8830 stub_group_size = -group_size;
8831 else
8832 stub_group_size = group_size;
8833 if (stub_group_size == 1)
8834 {
8835 /* Default values. */
58ac9f71
AM		 8836 if (stubs_always_before_branch)
8837 {
8838 stub_group_size = 0x1e00000;
8839 if (htab->has_14bit_branch)
8840 stub_group_size = 0x7800;
8841 }
8842 else
8843 {
8844 stub_group_size = 0x1c00000;
8845 if (htab->has_14bit_branch)
8846 stub_group_size = 0x7000;
8847 }
721956f4
AM		 8848 }
8849
8850 group_sections (htab, stub_group_size, stubs_always_before_branch);
8851
721956f4
AM		 8852 while (1)
8853 {
8854 bfd *input_bfd;
8855 unsigned int bfd_indx;
8856 asection *stub_sec;
b34976b6 8857 bfd_boolean stub_changed;
721956f4
AM		 8858
8859 htab->stub_iteration += 1;
b34976b6 8860 stub_changed = FALSE;
721956f4
AM		 8861
8862 for (input_bfd = info->input_bfds, bfd_indx = 0;
8863 input_bfd != NULL;
8864 input_bfd = input_bfd->link_next, bfd_indx++)
8865 {
8866 Elf_Internal_Shdr *symtab_hdr;
8867 asection *section;
6cdc0ccc 8868 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8869
8870 /* We'll need the symbol table in a second. */
8871 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8872 if (symtab_hdr->sh_info == 0)
8873 continue;
8874
721956f4
AM		 8875 /* Walk over each section attached to the input bfd. */
8876 for (section = input_bfd->sections;
8877 section != NULL;
8878 section = section->next)
8879 {
721956f4 8880 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8881
8882 /* If there aren't any relocs, then there's nothing more
8883 to do. */
8884 if ((section->flags & SEC_RELOC) == 0
8885 || section->reloc_count == 0)
8886 continue;
8887
8888 /* If this section is a link-once section that will be
8889 discarded, then don't create any stubs. */
8890 if (section->output_section == NULL
8891 || section->output_section->owner != output_bfd)
8892 continue;
8893
1e2f5b6e
AM		 8894 /* Get the relocs. */
8895 internal_relocs
4ce794b7 8896 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8897 info->keep_memory);
721956f4 8898 if (internal_relocs == NULL)
1e2f5b6e 8899 goto error_ret_free_local;
721956f4
AM		 8900
8901 /* Now examine each relocation. */
8902 irela = internal_relocs;
8903 irelaend = irela + section->reloc_count;
8904 for (; irela < irelaend; irela++)
8905 {
4ce794b7
AM		 8906 enum elf_ppc64_reloc_type r_type;
8907 unsigned int r_indx;
721956f4
AM		 8908 enum ppc_stub_type stub_type;
8909 struct ppc_stub_hash_entry *stub_entry;
8387904d 8910 asection *sym_sec, *code_sec;
721956f4
AM		 8911 bfd_vma sym_value;
8912 bfd_vma destination;
8843416a 8913 bfd_boolean ok_dest;
721956f4 8914 struct ppc_link_hash_entry *hash;
8387904d 8915 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8916 struct elf_link_hash_entry *h;
8917 Elf_Internal_Sym *sym;
721956f4
AM		 8918 char *stub_name;
8919 const asection *id_sec;
8387904d 8920 long *opd_adjust;
721956f4
AM		 8921
8922 r_type = ELF64_R_TYPE (irela->r_info);
8923 r_indx = ELF64_R_SYM (irela->r_info);
8924
4ce794b7 8925 if (r_type >= R_PPC64_max)
721956f4
AM		 8926 {
8927 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8928 goto error_ret_free_internal;
721956f4
AM		 8929 }
8930
8931 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8932 if (r_type != R_PPC64_REL24
8933 && r_type != R_PPC64_REL14
8934 && r_type != R_PPC64_REL14_BRTAKEN
8935 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8936 continue;
8937
8938 /* Now determine the call target, its name, value,
8939 section. */
411e1bfb
AM		 8940 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8941 r_indx, input_bfd))
8942 goto error_ret_free_internal;
8943 hash = (struct ppc_link_hash_entry *) h;
8944
8843416a 8945 ok_dest = FALSE;
8387904d 8946 fdh = NULL;
411e1bfb 8947 if (hash == NULL)
721956f4 8948 {
411e1bfb 8949 sym_value = sym->st_value;
8843416a 8950 ok_dest = TRUE;
721956f4
AM		 8951 }
8952 else
8953 {
411e1bfb 8954 sym_value = 0;
99877b66
AM		 8955 /* Recognise an old ABI func code entry sym, and
8956 use the func descriptor sym instead. */
ceb1f1ef 8957 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 8958 && (fdh = get_fdh (hash, htab)) != NULL)
8959 {
8387904d
AM		 8960 if (fdh->elf.root.type == bfd_link_hash_defined
8961 || fdh->elf.root.type == bfd_link_hash_defweak)
8962 {
8963 sym_sec = fdh->elf.root.u.def.section;
8964 sym_value = fdh->elf.root.u.def.value;
8965 if (sym_sec->output_section != NULL)
8966 ok_dest = TRUE;
8967 }
99877b66
AM		 8968 else
8969 fdh = NULL;
8387904d
AM		 8970 }
8971 else if (hash->elf.root.type == bfd_link_hash_defined
8972 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8973 {
721956f4
AM		 8974 sym_value = hash->elf.root.u.def.value;
8975 if (sym_sec->output_section != NULL)
8843416a 8976 ok_dest = TRUE;
721956f4
AM		 8977 }
8978 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8979 ;
8980 else if (hash->elf.root.type == bfd_link_hash_undefined)
8981 ;
8982 else
8983 {
8984 bfd_set_error (bfd_error_bad_value);
8985 goto error_ret_free_internal;
8986 }
8987 }
8988
8843416a
AM		 8989 destination = 0;
8990 if (ok_dest)
8991 {
8992 sym_value += irela->r_addend;
8993 destination = (sym_value
8994 + sym_sec->output_offset
8995 + sym_sec->output_section->vma);
8996 }
8997
8387904d
AM		 8998 code_sec = sym_sec;
8999 opd_adjust = get_opd_info (sym_sec);
9000 if (opd_adjust != NULL)
9001 {
9002 bfd_vma dest;
9003
9004 if (hash == NULL)
9005 {
3f764659 9006 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 9007 if (adjust == -1)
9008 continue;
9009 sym_value += adjust;
9010 }
9011 dest = opd_entry_value (sym_sec, sym_value,
9012 &code_sec, &sym_value);
9013 if (dest != (bfd_vma) -1)
9014 {
9015 destination = dest;
9016 if (fdh != NULL)
9017 {
9018 /* Fixup old ABI sym to point at code
9019 entry. */
99877b66 9020 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9021 hash->elf.root.u.def.section = code_sec;
9022 hash->elf.root.u.def.value = sym_value;
9023 }
9024 }
9025 }
9026
721956f4
AM		 9027 /* Determine what (if any) linker stub is needed. */
9028 stub_type = ppc_type_of_stub (section, irela, &hash,
9029 destination);
ad8e1ba5
AM		 9030
9031 if (stub_type != ppc_stub_plt_call)
9032 {
9033 /* Check whether we need a TOC adjusting stub.
9034 Since the linker pastes together pieces from
9035 different object files when creating the
9036 _init and _fini functions, it may be that a
9037 call to what looks like a local sym is in
9038 fact a call needing a TOC adjustment. */
8387904d
AM		 9039 if (code_sec != NULL
9040 && code_sec->output_section != NULL
9041 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9042 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9043 && (code_sec->has_toc_reloc
9044 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9045 stub_type = ppc_stub_long_branch_r2off;
9046 }
9047
721956f4
AM		 9048 if (stub_type == ppc_stub_none)
9049 continue;
9050
411e1bfb
AM		 9051 /* __tls_get_addr calls might be eliminated. */
9052 if (stub_type != ppc_stub_plt_call
9053 && hash != NULL
8387904d
AM		 9054 && (hash == htab->tls_get_addr
9055 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9056 && section->has_tls_reloc
9057 && irela != internal_relocs)
9058 {
9059 /* Get tls info. */
e7b938ca 9060 char *tls_mask;
411e1bfb 9061
0d4792f7 9062 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9063 irela - 1, input_bfd))
9064 goto error_ret_free_internal;
e7b938ca 9065 if (*tls_mask != 0)
411e1bfb
AM		 9066 continue;
9067 }
9068
721956f4
AM		 9069 /* Support for grouping stub sections. */
9070 id_sec = htab->stub_group[section->id].link_sec;
9071
9072 /* Get the name of this stub. */
9073 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9074 if (!stub_name)
9075 goto error_ret_free_internal;
9076
9077 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9078 stub_name, FALSE, FALSE);
721956f4
AM		 9079 if (stub_entry != NULL)
9080 {
9081 /* The proper stub has already been created. */
9082 free (stub_name);
9083 continue;
9084 }
9085
9086 stub_entry = ppc_add_stub (stub_name, section, htab);
9087 if (stub_entry == NULL)
9088 {
9089 free (stub_name);
6cdc0ccc
AM		 9090 error_ret_free_internal:
9091 if (elf_section_data (section)->relocs == NULL)
9092 free (internal_relocs);
9093 error_ret_free_local:
9094 if (local_syms != NULL
9095 && (symtab_hdr->contents
9096 != (unsigned char *) local_syms))
9097 free (local_syms);
b34976b6 9098 return FALSE;
721956f4
AM		 9099 }
9100
ad8e1ba5 9101 stub_entry->stub_type = stub_type;
721956f4 9102 stub_entry->target_value = sym_value;
8387904d 9103 stub_entry->target_section = code_sec;
721956f4 9104 stub_entry->h = hash;
411e1bfb 9105 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9106
9107 if (stub_entry->h != NULL)
9108 htab->stub_globals += 1;
9109
b34976b6 9110 stub_changed = TRUE;
721956f4
AM		 9111 }
9112
9113 /* We're done with the internal relocs, free them. */
6cdc0ccc 9114 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9115 free (internal_relocs);
721956f4 9116 }
6cdc0ccc
AM		 9117
9118 if (local_syms != NULL
9119 && symtab_hdr->contents != (unsigned char *) local_syms)
9120 {
9121 if (!info->keep_memory)
9122 free (local_syms);
9123 else
9124 symtab_hdr->contents = (unsigned char *) local_syms;
9125 }
721956f4
AM		 9126 }
9127
9128 if (!stub_changed)
9129 break;
9130
9131 /* OK, we've added some stubs. Find out the new size of the
9132 stub sections. */
9133 for (stub_sec = htab->stub_bfd->sections;
9134 stub_sec != NULL;
9135 stub_sec = stub_sec->next)
e717da7e 9136 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 9137 {
9138 stub_sec->size = 0;
9139 stub_sec->reloc_count = 0;
9140 }
eea6121a
AM		 9141
9142 htab->brlt->size = 0;
ee75fd95 9143 if (htab->relbrlt != NULL)
eea6121a 9144 htab->relbrlt->size = 0;
721956f4 9145
63bc6f6c 9146 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 9147
9148 /* Ask the linker to do its stuff. */
9149 (*htab->layout_sections_again) ();
9150 }
9151
c456f082 9152 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9153 section is empty, but it's too late. If we strip sections here,
9154 the dynamic symbol table is corrupted since the section symbol
9155 for the stripped section isn't written. */
721956f4 9156
b34976b6 9157 return TRUE;
721956f4
AM		 9158}
9159
9160/* Called after we have determined section placement. If sections
805fc799 9161 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9162
805fc799 9163bfd_vma
4ce794b7 9164ppc64_elf_toc (bfd *obfd)
721956f4 9165{
805fc799
AM		 9166 asection *s;
9167 bfd_vma TOCstart;
721956f4 9168
805fc799
AM		 9169 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9170 order. The TOC starts where the first of these sections starts. */
9171 s = bfd_get_section_by_name (obfd, ".got");
9172 if (s == NULL)
9173 s = bfd_get_section_by_name (obfd, ".toc");
9174 if (s == NULL)
9175 s = bfd_get_section_by_name (obfd, ".tocbss");
9176 if (s == NULL)
9177 s = bfd_get_section_by_name (obfd, ".plt");
9178 if (s == NULL)
9179 {
9180 /* This may happen for
9181 o references to TOC base (SYM@toc / TOC[tc0]) without a
9182 .toc directive
9183 o bad linker script
9184 o --gc-sections and empty TOC sections
9185
9186 FIXME: Warn user? */
9187
9188 /* Look for a likely section. We probably won't even be
9189 using TOCstart. */
9190 for (s = obfd->sections; s != NULL; s = s->next)
9191 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9192 == (SEC_ALLOC | SEC_SMALL_DATA))
9193 break;
721956f4 9194 if (s == NULL)
805fc799
AM		 9195 for (s = obfd->sections; s != NULL; s = s->next)
9196 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9197 == (SEC_ALLOC | SEC_SMALL_DATA))
9198 break;
721956f4 9199 if (s == NULL)
805fc799
AM		 9200 for (s = obfd->sections; s != NULL; s = s->next)
9201 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9202 break;
721956f4 9203 if (s == NULL)
805fc799
AM		 9204 for (s = obfd->sections; s != NULL; s = s->next)
9205 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9206 break;
9207 }
721956f4 9208
805fc799
AM		 9209 TOCstart = 0;
9210 if (s != NULL)
9211 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9212
805fc799 9213 return TOCstart;
721956f4
AM		 9214}
9215
9216/* Build all the stubs associated with the current output file.
9217 The stubs are kept in a hash table attached to the main linker
9218 hash table. This function is called via gldelf64ppc_finish. */
9219
b34976b6 9220bfd_boolean
4ce794b7
AM		 9221ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9222 struct bfd_link_info *info,
9223 char **stats)
5d1634d7
AM		 9224{
9225 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9226 asection *stub_sec;
5d1634d7 9227 bfd_byte *p;
e717da7e 9228 int stub_sec_count = 0;
5d1634d7 9229
ad8e1ba5 9230 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9231
9232 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9233 for (stub_sec = htab->stub_bfd->sections;
9234 stub_sec != NULL;
9235 stub_sec = stub_sec->next)
eea6121a
AM		 9236 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9237 && stub_sec->size != 0)
e717da7e 9238 {
eea6121a
AM		 9239 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9240 if (stub_sec->contents == NULL)
9241 return FALSE;
9242 /* We want to check that built size is the same as calculated
9243 size. rawsize is a convenient location to use. */
9244 stub_sec->rawsize = stub_sec->size;
9245 stub_sec->size = 0;
e717da7e 9246 }
5d1634d7 9247
4ce794b7 9248 if (htab->plt != NULL)
5d1634d7 9249 {
9f951329 9250 unsigned int indx;
ad8e1ba5 9251 bfd_vma plt0;
9f951329 9252
721956f4 9253 /* Build the .glink plt call stub. */
4ce794b7
AM		 9254 plt0 = (htab->plt->output_section->vma
9255 + htab->plt->output_offset
9256 - (htab->glink->output_section->vma
9257 + htab->glink->output_offset
ad8e1ba5
AM		 9258 + GLINK_CALL_STUB_SIZE));
9259 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9260 {
ad8e1ba5
AM		 9261 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9262 bfd_set_error (bfd_error_bad_value);
9263 return FALSE;
721956f4 9264 }
721956f4 9265
97b639ba
AM		 9266 if (htab->emit_stub_syms)
9267 {
9268 struct elf_link_hash_entry *h;
9269 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9270 if (h == NULL)
9271 return FALSE;
9272 if (h->root.type == bfd_link_hash_new)
9273 {
9274 h->root.type = bfd_link_hash_defined;
9275 h->root.u.def.section = htab->glink;
9276 h->root.u.def.value = 0;
f5385ebf
AM		 9277 h->ref_regular = 1;
9278 h->def_regular = 1;
9279 h->ref_regular_nonweak = 1;
9280 h->forced_local = 1;
9281 h->non_elf = 0;
97b639ba
AM		 9282 }
9283 }
4ce794b7
AM		 9284 p = htab->glink->contents;
9285 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9286 p += 4;
4ce794b7 9287 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9288 p += 4;
4ce794b7 9289 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9290 p += 4;
4ce794b7 9291 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9292 p += 4;
4ce794b7 9293 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9294 p += 4;
4ce794b7 9295 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9296 p += 4;
4ce794b7 9297 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9298 p += 4;
4ce794b7 9299 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9300 p += 4;
4ce794b7 9301 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9302 p += 4;
4ce794b7 9303 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9304 p += 4;
4ce794b7 9305 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9306 p += 4;
4ce794b7 9307 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9308 p += 4;
4ce794b7 9309 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9310 p += 4;
4ce794b7 9311 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9312 p += 4;
4ce794b7 9313 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9314 p += 4;
4ce794b7 9315 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9316 p += 4;
9317
9f951329
AM		 9318 /* Build the .glink lazy link call stubs. */
9319 indx = 0;
eea6121a 9320 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9321 {
9322 if (indx < 0x8000)
9323 {
4ce794b7 9324 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9325 p += 4;
9326 }
9327 else
9328 {
4ce794b7 9329 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9330 p += 4;
4ce794b7 9331 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9332 p += 4;
9333 }
4ce794b7
AM		 9334 bfd_put_32 (htab->glink->owner,
9335 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9336 indx++;
9f951329
AM		 9337 p += 4;
9338 }
eea6121a 9339 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9340 }
5d1634d7 9341
eea6121a 9342 if (htab->brlt->size != 0)
721956f4 9343 {
4ce794b7 9344 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9345 htab->brlt->size);
4ce794b7 9346 if (htab->brlt->contents == NULL)
b34976b6 9347 return FALSE;
721956f4 9348 }
ee75fd95 9349 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9350 {
9351 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9352 htab->relbrlt->size);
63bc6f6c
AM		 9353 if (htab->relbrlt->contents == NULL)
9354 return FALSE;
9355 }
5d1634d7 9356
721956f4
AM		 9357 /* Build the stubs as directed by the stub hash table. */
9358 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9359
721956f4
AM		 9360 for (stub_sec = htab->stub_bfd->sections;
9361 stub_sec != NULL;
9362 stub_sec = stub_sec->next)
e717da7e
AM		 9363 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9364 {
9365 stub_sec_count += 1;
eea6121a 9366 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9367 break;
9368 }
5d1634d7 9369
721956f4 9370 if (stub_sec != NULL
eea6121a 9371 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9372 {
b34976b6 9373 htab->stub_error = TRUE;
721956f4 9374 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9375 }
721956f4 9376
d2a300cf
AM		 9377 if (htab->stub_error)
9378 return FALSE;
9379
9380 if (stats != NULL)
9381 {
9382 *stats = bfd_malloc (500);
9383 if (*stats == NULL)
9384 return FALSE;
9385
ee75fd95 9386 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9387 " branch %lu\n"
9388 " toc adjust %lu\n"
9389 " long branch %lu\n"
9390 " long toc adj %lu\n"
9391 " plt call %lu"),
e717da7e 9392 stub_sec_count,
ee75fd95 9393 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9394 htab->stub_count[ppc_stub_long_branch - 1],
9395 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9396 htab->stub_count[ppc_stub_plt_branch - 1],
9397 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9398 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9399 }
9400 return TRUE;
5bd4f169
AM		 9401}
9402
99877b66
AM		 9403/* This function undoes the changes made by add_symbol_adjust. */
9404
9405static bfd_boolean
9406undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9407{
9408 struct ppc_link_hash_entry *eh;
9409
9410 if (h->root.type == bfd_link_hash_indirect)
9411 return TRUE;
9412
9413 if (h->root.type == bfd_link_hash_warning)
9414 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9415
9416 eh = (struct ppc_link_hash_entry *) h;
9417 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9418 return TRUE;
9419
9420 eh->elf.root.type = bfd_link_hash_undefined;
9421 return TRUE;
9422}
9423
9424void
9425ppc64_elf_restore_symbols (struct bfd_link_info *info)
9426{
9427 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9428 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9429}
9430
5bd4f169
AM		 9431/* The RELOCATE_SECTION function is called by the ELF backend linker
9432 to handle the relocations for a section.
9433
9434 The relocs are always passed as Rela structures; if the section
9435 actually uses Rel structures, the r_addend field will always be
9436 zero.
9437
9438 This function is responsible for adjust the section contents as
9439 necessary, and (if using Rela relocs and generating a
1049f94e 9440 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9441 necessary.
9442
9443 This function does not have to worry about setting the reloc
9444 address or the reloc symbol index.
9445
9446 LOCAL_SYMS is a pointer to the swapped in local symbols.
9447
9448 LOCAL_SECTIONS is an array giving the section in the input file
9449 corresponding to the st_shndx field of each local symbol.
9450
9451 The global hash table entry for the global symbols can be found
9452 via elf_sym_hashes (input_bfd).
9453
1049f94e 9454 When generating relocatable output, this function must handle
5bd4f169
AM		 9455 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9456 going to be the section symbol corresponding to the output
9457 section, which means that the addend must be adjusted
9458 accordingly. */
9459
b34976b6 9460static bfd_boolean
4ce794b7
AM		 9461ppc64_elf_relocate_section (bfd *output_bfd,
9462 struct bfd_link_info *info,
9463 bfd *input_bfd,
9464 asection *input_section,
9465 bfd_byte *contents,
9466 Elf_Internal_Rela *relocs,
9467 Elf_Internal_Sym *local_syms,
9468 asection **local_sections)
5bd4f169 9469{
65f38f15 9470 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9471 Elf_Internal_Shdr *symtab_hdr;
9472 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9473 Elf_Internal_Rela *rel;
9474 Elf_Internal_Rela *relend;
411e1bfb
AM		 9475 Elf_Internal_Rela outrel;
9476 bfd_byte *loc;
411e1bfb 9477 struct got_entry **local_got_ents;
5bd4f169 9478 bfd_vma TOCstart;
b34976b6
AM		 9479 bfd_boolean ret = TRUE;
9480 bfd_boolean is_opd;
96e0dda4 9481 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9482 bfd_boolean is_power4 = FALSE;
5bd4f169 9483
1049f94e 9484 if (info->relocatable)
b34976b6 9485 return TRUE;
b491616a 9486
65f38f15 9487 /* Initialize howto table if needed. */
5bd4f169 9488 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9489 ppc_howto_init ();
9490
65f38f15 9491 htab = ppc_hash_table (info);
ee75fd95
AM		 9492
9493 /* Don't relocate stub sections. */
9494 if (input_section->owner == htab->stub_bfd)
9495 return TRUE;
9496
411e1bfb 9497 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9498 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9499 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9500 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9501 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9502
5bd4f169
AM		 9503 rel = relocs;
9504 relend = relocs + input_section->reloc_count;
9505 for (; rel < relend; rel++)
9506 {
04c9666a 9507 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9508 bfd_vma addend;
9509 bfd_reloc_status_type r;
9510 Elf_Internal_Sym *sym;
9511 asection *sec;
039b3fef
AM		 9512 struct elf_link_hash_entry *h_elf;
9513 struct ppc_link_hash_entry *h;
9514 struct ppc_link_hash_entry *fdh;
5bd4f169 9515 const char *sym_name;
0d4792f7 9516 unsigned long r_symndx, toc_symndx;
951fd09b 9517 char tls_mask, tls_gd, tls_type;
0d4792f7 9518 char sym_type;
5bd4f169 9519 bfd_vma relocation;
b34976b6
AM		 9520 bfd_boolean unresolved_reloc;
9521 bfd_boolean warned;
50bc7936 9522 unsigned long insn, mask;
721956f4
AM		 9523 struct ppc_stub_hash_entry *stub_entry;
9524 bfd_vma max_br_offset;
9525 bfd_vma from;
5bd4f169 9526
4ce794b7 9527 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9528 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9529
9530 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9531 symbol of the previous ADDR64 reloc. The symbol gives us the
9532 proper TOC base to use. */
9533 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9534 && rel != relocs
9535 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9536 && is_opd)
9537 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9538
4ce794b7
AM		 9539 sym = NULL;
9540 sec = NULL;
039b3fef 9541 h_elf = NULL;
4ce794b7 9542 sym_name = NULL;
b34976b6
AM		 9543 unresolved_reloc = FALSE;
9544 warned = FALSE;
65f38f15 9545
0b13192e 9546 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9547 {
9548 /* It's a local symbol. */
4025353c
AM		 9549 long *opd_adjust;
9550
5bd4f169
AM		 9551 sym = local_syms + r_symndx;
9552 sec = local_sections[r_symndx];
26c61ae5 9553 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9554 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9555 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9556 opd_adjust = get_opd_info (sec);
9557 if (opd_adjust != NULL)
1e2f5b6e 9558 {
3f764659 9559 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9560 if (adjust == -1)
9561 relocation = 0;
9562 else
9563 relocation += adjust;
1e2f5b6e 9564 }
5bd4f169
AM		 9565 }
9566 else
9567 {
b2a8e766
AM		 9568 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9569 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9570 h_elf, sec, relocation,
b2a8e766 9571 unresolved_reloc, warned);
039b3fef
AM		 9572 sym_name = h_elf->root.root.string;
9573 sym_type = h_elf->type;
5bd4f169 9574 }
039b3fef 9575 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9576
951fd09b
AM		 9577 /* TLS optimizations. Replace instruction sequences and relocs
9578 based on information we collected in tls_optimize. We edit
9579 RELOCS so that --emit-relocs will output something sensible
9580 for the final instruction stream. */
9581 tls_mask = 0;
9582 tls_gd = 0;
0d4792f7 9583 toc_symndx = 0;
d881513a 9584 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9585 {
9586 if (h != NULL)
039b3fef 9587 tls_mask = h->tls_mask;
411e1bfb
AM		 9588 else if (local_got_ents != NULL)
9589 {
e7b938ca
AM		 9590 char *lgot_masks;
9591 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9592 tls_mask = lgot_masks[r_symndx];
411e1bfb 9593 }
0d4792f7
AM		 9594 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9595 {
9596 /* Check for toc tls entries. */
9597 char *toc_tls;
9598
9599 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9600 rel, input_bfd))
9601 return FALSE;
9602
9603 if (toc_tls)
9604 tls_mask = *toc_tls;
9605 }
9606 }
9607
9608 /* Check that tls relocs are used with tls syms, and non-tls
9609 relocs are used with non-tls syms. */
9610 if (r_symndx != 0
9611 && r_type != R_PPC64_NONE
9612 && (h == NULL
039b3fef
AM		 9613 || h->elf.root.type == bfd_link_hash_defined
9614 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9615 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9616 {
9617 if (r_type == R_PPC64_TLS && tls_mask != 0)
9618 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9619 ;
9620 else
9621 (*_bfd_error_handler)
9622 (sym_type == STT_TLS
d003868e
AM		 9623 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9624 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9625 input_bfd,
9626 input_section,
0d4792f7
AM		 9627 (long) rel->r_offset,
9628 ppc64_elf_howto_table[r_type]->name,
9629 sym_name);
411e1bfb
AM		 9630 }
9631
9632 /* Ensure reloc mapping code below stays sane. */
9633 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9634 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9635 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9636 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9637 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9638 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9639 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9640 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9641 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9642 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9643 abort ();
0d4792f7 9644
411e1bfb
AM		 9645 switch (r_type)
9646 {
9647 default:
411e1bfb
AM		 9648 break;
9649
9650 case R_PPC64_TOC16:
9651 case R_PPC64_TOC16_LO:
9652 case R_PPC64_TOC16_DS:
9653 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9654 {
9655 /* Check for toc tls entries. */
9656 char *toc_tls;
951fd09b 9657 int retval;
411e1bfb 9658
0d4792f7
AM		 9659 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9660 rel, input_bfd);
951fd09b 9661 if (retval == 0)
411e1bfb
AM		 9662 return FALSE;
9663
9664 if (toc_tls)
9665 {
951fd09b 9666 tls_mask = *toc_tls;
411e1bfb
AM		 9667 if (r_type == R_PPC64_TOC16_DS
9668 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9669 {
9670 if (tls_mask != 0
9671 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9672 goto toctprel;
9673 }
411e1bfb 9674 else
951fd09b
AM		 9675 {
9676 /* If we found a GD reloc pair, then we might be
9677 doing a GD->IE transition. */
9678 if (retval == 2)
9679 {
9680 tls_gd = TLS_TPRELGD;
9681 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9682 goto tls_get_addr_check;
9683 }
9684 else if (retval == 3)
9685 {
9686 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9687 goto tls_get_addr_check;
9688 }
9689 }
411e1bfb
AM		 9690 }
9691 }
9692 break;
9693
9694 case R_PPC64_GOT_TPREL16_DS:
9695 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9696 if (tls_mask != 0
9697 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9698 {
81407a69 9699 toctprel:
411e1bfb
AM		 9700 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9701 insn &= 31 << 21;
9702 insn |= 0x3c0d0000; /* addis 0,13,0 */
9703 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9704 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9705 if (toc_symndx != 0)
9706 {
9707 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9708 /* We changed the symbol. Start over in order to
9709 get h, sym, sec etc. right. */
9710 rel--;
9711 continue;
9712 }
9713 else
9714 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9715 }
9716 break;
9717
9718 case R_PPC64_TLS:
951fd09b
AM		 9719 if (tls_mask != 0
9720 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9721 {
50bc7936 9722 bfd_vma rtra;
411e1bfb 9723 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9724 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9725 == ((31 << 26) | (13 << 11)))
9726 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9727 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9728 == ((31 << 26) | (13 << 16)))
9729 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9730 else
9731 abort ();
9732 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9733 /* add -> addi. */
9734 insn = 14 << 26;
9735 else if ((insn & (31 << 1)) == 23 << 1
9736 && ((insn & (31 << 6)) < 14 << 6
9737 || ((insn & (31 << 6)) >= 16 << 6
9738 && (insn & (31 << 6)) < 24 << 6)))
9739 /* load and store indexed -> dform. */
9740 insn = (32 | ((insn >> 6) & 31)) << 26;
9741 else if ((insn & (31 << 1)) == 21 << 1
9742 && (insn & (0x1a << 6)) == 0)
9743 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9744 insn = (((58 | ((insn >> 6) & 4)) << 26)
9745 | ((insn >> 6) & 1));
9746 else if ((insn & (31 << 1)) == 21 << 1
9747 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9748 /* lwax -> lwa. */
9749 insn = (58 << 26) | 2;
9750 else
9751 abort ();
9752 insn |= rtra;
9753 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9754 /* Was PPC64_TLS which sits on insn boundary, now
9755 PPC64_TPREL16_LO which is at insn+2. */
9756 rel->r_offset += 2;
0d4792f7
AM		 9757 r_type = R_PPC64_TPREL16_LO;
9758 if (toc_symndx != 0)
9759 {
9760 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9761 /* We changed the symbol. Start over in order to
9762 get h, sym, sec etc. right. */
9763 rel--;
9764 continue;
9765 }
9766 else
9767 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9768 }
9769 break;
9770
411e1bfb
AM		 9771 case R_PPC64_GOT_TLSGD16_HI:
9772 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9773 tls_gd = TLS_TPRELGD;
9774 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9775 goto tls_gdld_hi;
9776 break;
9777
411e1bfb
AM		 9778 case R_PPC64_GOT_TLSLD16_HI:
9779 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9780 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9781 {
951fd09b
AM		 9782 tls_gdld_hi:
9783 if ((tls_mask & tls_gd) != 0)
9784 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9785 + R_PPC64_GOT_TPREL16_DS);
9786 else
411e1bfb 9787 {
951fd09b
AM		 9788 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9789 rel->r_offset -= 2;
9790 r_type = R_PPC64_NONE;
411e1bfb 9791 }
951fd09b 9792 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9793 }
9794 break;
9795
951fd09b
AM		 9796 case R_PPC64_GOT_TLSGD16:
9797 case R_PPC64_GOT_TLSGD16_LO:
9798 tls_gd = TLS_TPRELGD;
9799 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9800 goto tls_get_addr_check;
9801 break;
411e1bfb 9802
951fd09b
AM		 9803 case R_PPC64_GOT_TLSLD16:
9804 case R_PPC64_GOT_TLSLD16_LO:
9805 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9806 {
9807 tls_get_addr_check:
9808 if (rel + 1 < relend)
411e1bfb 9809 {
951fd09b
AM		 9810 enum elf_ppc64_reloc_type r_type2;
9811 unsigned long r_symndx2;
9812 struct elf_link_hash_entry *h2;
9813 bfd_vma insn1, insn2, insn3;
9814 bfd_vma offset;
9815
9816 /* The next instruction should be a call to
9817 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9818 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9819 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9820 if (r_symndx2 < symtab_hdr->sh_info
9821 || (r_type2 != R_PPC64_REL14
9822 && r_type2 != R_PPC64_REL14_BRTAKEN
9823 && r_type2 != R_PPC64_REL14_BRNTAKEN
9824 && r_type2 != R_PPC64_REL24))
9825 break;
9826
9827 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9828 while (h2->root.type == bfd_link_hash_indirect
9829 || h2->root.type == bfd_link_hash_warning)
9830 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9831 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9832 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9833 break;
9834
9835 /* OK, it checks out. Replace the call. */
9836 offset = rel[1].r_offset;
9837 insn1 = bfd_get_32 (output_bfd,
9838 contents + rel->r_offset - 2);
9839 insn3 = bfd_get_32 (output_bfd,
9840 contents + offset + 4);
9841 if ((tls_mask & tls_gd) != 0)
411e1bfb 9842 {
951fd09b
AM		 9843 /* IE */
9844 insn1 &= (1 << 26) - (1 << 2);
9845 insn1 |= 58 << 26; /* ld */
9846 insn2 = 0x7c636a14; /* add 3,3,13 */
9847 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9848 if ((tls_mask & TLS_EXPLICIT) == 0)
9849 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9850 + R_PPC64_GOT_TPREL16_DS);
9851 else
9852 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9853 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9854 }
9855 else
951fd09b
AM		 9856 {
9857 /* LE */
9858 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9859 insn2 = 0x38630000; /* addi 3,3,0 */
9860 if (tls_gd == 0)
9861 {
9862 /* Was an LD reloc. */
9863 r_symndx = 0;
e1918d23
AM		 9864 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9865 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9866 }
0d4792f7
AM		 9867 else if (toc_symndx != 0)
9868 r_symndx = toc_symndx;
951fd09b
AM		 9869 r_type = R_PPC64_TPREL16_HA;
9870 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9871 rel[1].r_info = ELF64_R_INFO (r_symndx,
9872 R_PPC64_TPREL16_LO);
9873 rel[1].r_offset += 2;
9874 }
9875 if (insn3 == NOP
9876 || insn3 == CROR_151515 || insn3 == CROR_313131)
9877 {
9878 insn3 = insn2;
9879 insn2 = NOP;
9880 rel[1].r_offset += 4;
9881 }
9882 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9883 bfd_put_32 (output_bfd, insn2, contents + offset);
9884 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9885 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9886 {
0d4792f7
AM		 9887 /* We changed the symbol. Start over in order
9888 to get h, sym, sec etc. right. */
951fd09b
AM		 9889 rel--;
9890 continue;
9891 }
411e1bfb 9892 }
411e1bfb 9893 }
411e1bfb
AM		 9894 break;
9895
9896 case R_PPC64_DTPMOD64:
951fd09b
AM		 9897 if (rel + 1 < relend
9898 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9899 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9900 {
951fd09b
AM		 9901 if ((tls_mask & TLS_GD) == 0)
9902 {
9903 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9904 if ((tls_mask & TLS_TPRELGD) != 0)
9905 r_type = R_PPC64_TPREL64;
9906 else
9907 {
4ce794b7 9908 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9909 r_type = R_PPC64_NONE;
9910 }
9911 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9912 }
9913 }
9914 else
9915 {
9916 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9917 {
4ce794b7 9918 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9919 r_type = R_PPC64_NONE;
951fd09b 9920 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9921 }
411e1bfb
AM		 9922 }
9923 break;
9924
9925 case R_PPC64_TPREL64:
951fd09b 9926 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9927 {
9928 r_type = R_PPC64_NONE;
9929 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9930 }
9931 break;
9932 }
9933
9934 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9935 insn = 0;
b25116a9
AM		 9936 max_br_offset = 1 << 25;
9937 addend = rel->r_addend;
65f38f15 9938 switch (r_type)
5bd4f169
AM		 9939 {
9940 default:
65f38f15 9941 break;
5bd4f169 9942
65f38f15
AM		 9943 /* Branch taken prediction relocations. */
9944 case R_PPC64_ADDR14_BRTAKEN:
9945 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9946 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9947 /* Fall thru. */
65f38f15 9948
86c76c7b 9949 /* Branch not taken prediction relocations. */
65f38f15
AM		 9950 case R_PPC64_ADDR14_BRNTAKEN:
9951 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9952 insn |= bfd_get_32 (output_bfd,
9953 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9954 /* Fall thru. */
86c76c7b 9955
b25116a9
AM		 9956 case R_PPC64_REL14:
9957 max_br_offset = 1 << 15;
9958 /* Fall thru. */
5bd4f169 9959
65f38f15 9960 case R_PPC64_REL24:
ad8e1ba5
AM		 9961 /* Calls to functions with a different TOC, such as calls to
9962 shared objects, need to alter the TOC pointer. This is
9963 done using a linkage stub. A REL24 branching to these
9964 linkage stubs needs to be followed by a nop, as the nop
9965 will be replaced with an instruction to restore the TOC
9966 base pointer. */
b25116a9 9967 stub_entry = NULL;
8387904d 9968 fdh = h;
ad8e1ba5 9969 if (((h != NULL
039b3fef
AM		 9970 && (((fdh = h->oh) != NULL
9971 && fdh->elf.plt.plist != NULL)
9972 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9973 || (sec != NULL
ad8e1ba5 9974 && sec->output_section != NULL
b25116a9 9975 && sec->id <= htab->top_id
ad8e1ba5
AM		 9976 && (htab->stub_group[sec->id].toc_off
9977 != htab->stub_group[input_section->id].toc_off)))
721956f4 9978 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9979 rel, htab)) != NULL
9980 && (stub_entry->stub_type == ppc_stub_plt_call
9981 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9982 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9983 {
b25116a9 9984 bfd_boolean can_plt_call = FALSE;
721956f4 9985
eea6121a 9986 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9987 {
b25116a9
AM		 9988 unsigned long nop;
9989 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9990 if (nop == NOP
9991 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9992 {
4ce794b7 9993 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9994 contents + rel->r_offset + 4);
b25116a9 9995 can_plt_call = TRUE;
41bd81ab 9996 }
5bd4f169 9997 }
721956f4
AM		 9998
9999 if (!can_plt_call)
10000 {
ad8e1ba5
AM		 10001 if (stub_entry->stub_type == ppc_stub_plt_call)
10002 {
10003 /* If this is a plain branch rather than a branch
10004 and link, don't require a nop. */
b25116a9
AM		 10005 unsigned long br;
10006 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
10007 if ((br & 1) == 0)
10008 can_plt_call = TRUE;
15b552e9
AM		 10009 else
10010 stub_entry = NULL;
ad8e1ba5 10011 }
6ab189d5 10012 else if (h != NULL
039b3fef 10013 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10014 ".__libc_start_main") == 0)
10015 {
10016 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10017 can_plt_call = TRUE;
6ab189d5 10018 }
ad8e1ba5
AM		 10019 else
10020 {
10021 if (strcmp (input_section->output_section->name,
10022 ".init") == 0
10023 || strcmp (input_section->output_section->name,
10024 ".fini") == 0)
10025 (*_bfd_error_handler)
d003868e 10026 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10027 "not supported using your crt files; "
10028 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10029 input_bfd,
10030 input_section,
ad8e1ba5
AM		 10031 (long) rel->r_offset);
10032 else
10033 (*_bfd_error_handler)
d003868e 10034 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10035 "does not allow automatic multiple TOCs; "
10036 "recompile with -mminimal-toc or "
10037 "-fno-optimize-sibling-calls, "
10038 "or make `%s' extern"),
d003868e
AM		 10039 input_bfd,
10040 input_section,
ad8e1ba5
AM		 10041 (long) rel->r_offset,
10042 sym_name,
10043 sym_name);
10044 bfd_set_error (bfd_error_bad_value);
10045 ret = FALSE;
10046 }
721956f4
AM		 10047 }
10048
b25116a9
AM		 10049 if (can_plt_call
10050 && stub_entry->stub_type == ppc_stub_plt_call)
10051 unresolved_reloc = FALSE;
10052 }
10053
8387904d
AM		 10054 if (stub_entry == NULL
10055 && get_opd_info (sec) != NULL)
10056 {
10057 /* The branch destination is the value of the opd entry. */
10058 bfd_vma off = (relocation - sec->output_section->vma
10059 - sec->output_offset + rel->r_addend);
10060 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10061 if (dest != (bfd_vma) -1)
10062 {
10063 relocation = dest;
10064 addend = 0;
10065 }
10066 }
10067
b25116a9
AM		 10068 /* If the branch is out of reach we ought to have a long
10069 branch stub. */
10070 from = (rel->r_offset
10071 + input_section->output_offset
10072 + input_section->output_section->vma);
10073
10074 if (stub_entry == NULL
10075 && (relocation + rel->r_addend - from + max_br_offset
10076 >= 2 * max_br_offset)
10077 && r_type != R_PPC64_ADDR14_BRTAKEN
10078 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10079 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10080 htab);
b25116a9
AM		 10081
10082 if (stub_entry != NULL)
10083 {
10084 /* Munge up the value and addend so that we call the stub
10085 rather than the procedure directly. */
10086 relocation = (stub_entry->stub_offset
10087 + stub_entry->stub_sec->output_offset
10088 + stub_entry->stub_sec->output_section->vma);
10089 addend = 0;
10090 }
10091
10092 if (insn != 0)
10093 {
10094 if (is_power4)
721956f4 10095 {
b25116a9
AM		 10096 /* Set 'a' bit. This is 0b00010 in BO field for branch
10097 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10098 for branch on CTR insns (BO == 1a00t or 1a01t). */
10099 if ((insn & (0x14 << 21)) == (0x04 << 21))
10100 insn |= 0x02 << 21;
10101 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10102 insn |= 0x08 << 21;
10103 else
10104 break;
10105 }
10106 else
10107 {
10108 /* Invert 'y' bit if not the default. */
10109 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10110 insn ^= 0x01 << 21;
721956f4 10111 }
b25116a9
AM		 10112
10113 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10114 }
e86ce104 10115
06da1e8e
AM		 10116 /* NOP out calls to undefined weak functions.
10117 We can thus call a weak function without first
10118 checking whether the function is defined. */
b25116a9 10119 else if (h != NULL
039b3fef 10120 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10121 && r_type == R_PPC64_REL24
10122 && relocation == 0
10123 && rel->r_addend == 0)
e86ce104 10124 {
06da1e8e
AM		 10125 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10126 continue;
e86ce104 10127 }
65f38f15
AM		 10128 break;
10129 }
5bd4f169 10130
65f38f15 10131 /* Set `addend'. */
411e1bfb 10132 tls_type = 0;
65f38f15
AM		 10133 switch (r_type)
10134 {
10135 default:
10136 (*_bfd_error_handler)
d003868e
AM		 10137 (_("%B: unknown relocation type %d for symbol %s"),
10138 input_bfd, (int) r_type, sym_name);
5bd4f169 10139
65f38f15 10140 bfd_set_error (bfd_error_bad_value);
b34976b6 10141 ret = FALSE;
65f38f15 10142 continue;
5bd4f169 10143
65f38f15 10144 case R_PPC64_NONE:
411e1bfb 10145 case R_PPC64_TLS:
04c9666a
AM		 10146 case R_PPC64_GNU_VTINHERIT:
10147 case R_PPC64_GNU_VTENTRY:
65f38f15 10148 continue;
5bd4f169
AM		 10149
10150 /* GOT16 relocations. Like an ADDR16 using the symbol's
10151 address in the GOT as relocation value instead of the
411e1bfb 10152 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10153 symbol and put the symbol value there. */
411e1bfb
AM		 10154 case R_PPC64_GOT_TLSGD16:
10155 case R_PPC64_GOT_TLSGD16_LO:
10156 case R_PPC64_GOT_TLSGD16_HI:
10157 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10158 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10159 goto dogot;
10160
10161 case R_PPC64_GOT_TLSLD16:
10162 case R_PPC64_GOT_TLSLD16_LO:
10163 case R_PPC64_GOT_TLSLD16_HI:
10164 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10165 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10166 goto dogot;
10167
10168 case R_PPC64_GOT_TPREL16_DS:
10169 case R_PPC64_GOT_TPREL16_LO_DS:
10170 case R_PPC64_GOT_TPREL16_HI:
10171 case R_PPC64_GOT_TPREL16_HA:
10172 tls_type = TLS_TLS | TLS_TPREL;
10173 goto dogot;
10174
10175 case R_PPC64_GOT_DTPREL16_DS:
10176 case R_PPC64_GOT_DTPREL16_LO_DS:
10177 case R_PPC64_GOT_DTPREL16_HI:
10178 case R_PPC64_GOT_DTPREL16_HA:
10179 tls_type = TLS_TLS | TLS_DTPREL;
10180 goto dogot;
10181
65f38f15
AM		 10182 case R_PPC64_GOT16:
10183 case R_PPC64_GOT16_LO:
10184 case R_PPC64_GOT16_HI:
10185 case R_PPC64_GOT16_HA:
10186 case R_PPC64_GOT16_DS:
10187 case R_PPC64_GOT16_LO_DS:
411e1bfb 10188 dogot:
5bd4f169
AM		 10189 {
10190 /* Relocation is to the entry for this symbol in the global
10191 offset table. */
e717da7e 10192 asection *got;
d881513a 10193 bfd_vma *offp;
5bd4f169 10194 bfd_vma off;
d881513a 10195 unsigned long indx = 0;
65f38f15 10196
d881513a
AM		 10197 if (tls_type == (TLS_TLS | TLS_LD)
10198 && (h == NULL
f5385ebf 10199 || !h->elf.def_dynamic))
e717da7e 10200 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10201 else
5bd4f169 10202 {
d881513a 10203 struct got_entry *ent;
5bd4f169 10204
d881513a
AM		 10205 if (h != NULL)
10206 {
10207 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10208 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10209 &h->elf)
d881513a 10210 || (info->shared
039b3fef 10211 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10212 /* This is actually a static link, or it is a
10213 -Bsymbolic link and the symbol is defined
10214 locally, or the symbol was forced to be local
10215 because of a version file. */
10216 ;
10217 else
10218 {
039b3fef 10219 indx = h->elf.dynindx;
d881513a
AM		 10220 unresolved_reloc = FALSE;
10221 }
039b3fef 10222 ent = h->elf.got.glist;
d881513a 10223 }
411e1bfb 10224 else
5bd4f169 10225 {
d881513a
AM		 10226 if (local_got_ents == NULL)
10227 abort ();
10228 ent = local_got_ents[r_symndx];
5bd4f169 10229 }
d881513a
AM		 10230
10231 for (; ent != NULL; ent = ent->next)
10232 if (ent->addend == rel->r_addend
e717da7e 10233 && ent->owner == input_bfd
d881513a
AM		 10234 && ent->tls_type == tls_type)
10235 break;
10236 if (ent == NULL)
10237 abort ();
10238 offp = &ent->got.offset;
5bd4f169 10239 }
411e1bfb 10240
e717da7e
AM		 10241 got = ppc64_elf_tdata (input_bfd)->got;
10242 if (got == NULL)
10243 abort ();
10244
411e1bfb
AM		 10245 /* The offset must always be a multiple of 8. We use the
10246 least significant bit to record whether we have already
10247 processed this entry. */
d881513a 10248 off = *offp;
411e1bfb
AM		 10249 if ((off & 1) != 0)
10250 off &= ~1;
5bd4f169
AM		 10251 else
10252 {
411e1bfb
AM		 10253 /* Generate relocs for the dynamic linker, except in
10254 the case of TLSLD where we'll use one entry per
10255 module. */
e717da7e
AM		 10256 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10257
d881513a 10258 *offp = off | 1;
4e795f50
AM		 10259 if ((info->shared || indx != 0)
10260 && (h == NULL
039b3fef
AM		 10261 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10262 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10263 {
e717da7e
AM		 10264 outrel.r_offset = (got->output_section->vma
10265 + got->output_offset
411e1bfb 10266 + off);
81407a69 10267 outrel.r_addend = rel->r_addend;
d881513a 10268 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10269 {
411e1bfb 10270 outrel.r_addend = 0;
e515b051 10271 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10272 if (tls_type == (TLS_TLS | TLS_GD))
10273 {
e717da7e
AM		 10274 loc = relgot->contents;
10275 loc += (relgot->reloc_count++
d881513a
AM		 10276 * sizeof (Elf64_External_Rela));
10277 bfd_elf64_swap_reloca_out (output_bfd,
10278 &outrel, loc);
e515b051 10279 outrel.r_offset += 8;
81407a69 10280 outrel.r_addend = rel->r_addend;
d881513a
AM		 10281 outrel.r_info
10282 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10283 }
411e1bfb 10284 }
951fd09b 10285 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10286 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10287 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10288 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10289 else if (indx == 0)
81407a69
AM		 10290 {
10291 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10292
10293 /* Write the .got section contents for the sake
10294 of prelink. */
e717da7e 10295 loc = got->contents + off;
23fbd6fa
JJ		 10296 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10297 loc);
81407a69 10298 }
411e1bfb
AM		 10299 else
10300 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10301
10302 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10303 {
10304 outrel.r_addend += relocation;
10305 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10306 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10307 }
e717da7e
AM		 10308 loc = relgot->contents;
10309 loc += (relgot->reloc_count++
411e1bfb
AM		 10310 * sizeof (Elf64_External_Rela));
10311 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10312 }
10313
ad8e1ba5 10314 /* Init the .got section contents here if we're not
81407a69 10315 emitting a reloc. */
d881513a 10316 else
411e1bfb 10317 {
d881513a 10318 relocation += rel->r_addend;
7b609f53
AM		 10319 if (tls_type == (TLS_TLS | TLS_LD))
10320 relocation = 1;
10321 else if (tls_type != 0)
411e1bfb 10322 {
e1918d23 10323 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10324 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10325 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10326
7b609f53
AM		 10327 if (tls_type == (TLS_TLS | TLS_GD))
10328 {
10329 bfd_put_64 (output_bfd, relocation,
e717da7e 10330 got->contents + off + 8);
7b609f53
AM		 10331 relocation = 1;
10332 }
411e1bfb 10333 }
7b609f53 10334
411e1bfb 10335 bfd_put_64 (output_bfd, relocation,
e717da7e 10336 got->contents + off);
5bd4f169
AM		 10337 }
10338 }
10339
65f38f15
AM		 10340 if (off >= (bfd_vma) -2)
10341 abort ();
10342
e717da7e 10343 relocation = got->output_offset + off;
65f38f15 10344
5bd4f169 10345 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10346 addend = -TOC_BASE_OFF;
5bd4f169 10347 }
65f38f15
AM		 10348 break;
10349
10350 case R_PPC64_PLT16_HA:
10351 case R_PPC64_PLT16_HI:
10352 case R_PPC64_PLT16_LO:
10353 case R_PPC64_PLT32:
10354 case R_PPC64_PLT64:
10355 /* Relocation is to the entry for this symbol in the
10356 procedure linkage table. */
10357
10358 /* Resolve a PLT reloc against a local symbol directly,
10359 without using the procedure linkage table. */
10360 if (h == NULL)
10361 break;
10362
411e1bfb
AM		 10363 /* It's possible that we didn't make a PLT entry for this
10364 symbol. This happens when statically linking PIC code,
10365 or when using -Bsymbolic. Go find a match if there is a
10366 PLT entry. */
4ce794b7 10367 if (htab->plt != NULL)
65f38f15 10368 {
411e1bfb 10369 struct plt_entry *ent;
039b3fef 10370 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10371 if (ent->addend == rel->r_addend
10372 && ent->plt.offset != (bfd_vma) -1)
10373 {
4ce794b7
AM		 10374 relocation = (htab->plt->output_section->vma
10375 + htab->plt->output_offset
411e1bfb
AM		 10376 + ent->plt.offset);
10377 unresolved_reloc = FALSE;
10378 }
65f38f15 10379 }
65f38f15 10380 break;
5bd4f169 10381
0b13192e
AM		 10382 case R_PPC64_TOC:
10383 /* Relocation value is TOC base. */
10384 relocation = TOCstart;
10385 if (r_symndx == 0)
10386 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10387 else if (unresolved_reloc)
10388 ;
10389 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10390 relocation += htab->stub_group[sec->id].toc_off;
10391 else
10392 unresolved_reloc = TRUE;
10393 goto dodyn2;
10394
5bd4f169
AM		 10395 /* TOC16 relocs. We want the offset relative to the TOC base,
10396 which is the address of the start of the TOC plus 0x8000.
10397 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10398 in this order. */
65f38f15
AM		 10399 case R_PPC64_TOC16:
10400 case R_PPC64_TOC16_LO:
10401 case R_PPC64_TOC16_HI:
10402 case R_PPC64_TOC16_DS:
10403 case R_PPC64_TOC16_LO_DS:
10404 case R_PPC64_TOC16_HA:
ad8e1ba5 10405 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10406 break;
10407
10408 /* Relocate against the beginning of the section. */
65f38f15
AM		 10409 case R_PPC64_SECTOFF:
10410 case R_PPC64_SECTOFF_LO:
10411 case R_PPC64_SECTOFF_HI:
10412 case R_PPC64_SECTOFF_DS:
10413 case R_PPC64_SECTOFF_LO_DS:
10414 case R_PPC64_SECTOFF_HA:
4ce794b7 10415 if (sec != NULL)
65f38f15 10416 addend -= sec->output_section->vma;
5bd4f169
AM		 10417 break;
10418
721956f4
AM		 10419 case R_PPC64_REL14:
10420 case R_PPC64_REL14_BRNTAKEN:
10421 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10422 case R_PPC64_REL24:
10423 break;
10424
411e1bfb
AM		 10425 case R_PPC64_TPREL16:
10426 case R_PPC64_TPREL16_LO:
10427 case R_PPC64_TPREL16_HI:
10428 case R_PPC64_TPREL16_HA:
10429 case R_PPC64_TPREL16_DS:
10430 case R_PPC64_TPREL16_LO_DS:
10431 case R_PPC64_TPREL16_HIGHER:
10432 case R_PPC64_TPREL16_HIGHERA:
10433 case R_PPC64_TPREL16_HIGHEST:
10434 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10435 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10436 if (info->shared)
10437 /* The TPREL16 relocs shouldn't really be used in shared
10438 libs as they will result in DT_TEXTREL being set, but
10439 support them anyway. */
10440 goto dodyn;
10441 break;
10442
10443 case R_PPC64_DTPREL16:
10444 case R_PPC64_DTPREL16_LO:
10445 case R_PPC64_DTPREL16_HI:
10446 case R_PPC64_DTPREL16_HA:
10447 case R_PPC64_DTPREL16_DS:
10448 case R_PPC64_DTPREL16_LO_DS:
10449 case R_PPC64_DTPREL16_HIGHER:
10450 case R_PPC64_DTPREL16_HIGHERA:
10451 case R_PPC64_DTPREL16_HIGHEST:
10452 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10453 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10454 break;
10455
e515b051
AM		 10456 case R_PPC64_DTPMOD64:
10457 relocation = 1;
10458 addend = 0;
10459 goto dodyn;
10460
411e1bfb 10461 case R_PPC64_TPREL64:
e1918d23 10462 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10463 goto dodyn;
10464
10465 case R_PPC64_DTPREL64:
e1918d23 10466 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10467 /* Fall thru */
10468
65f38f15
AM		 10469 /* Relocations that may need to be propagated if this is a
10470 dynamic object. */
04c9666a 10471 case R_PPC64_REL30:
65f38f15
AM		 10472 case R_PPC64_REL32:
10473 case R_PPC64_REL64:
10474 case R_PPC64_ADDR14:
10475 case R_PPC64_ADDR14_BRNTAKEN:
10476 case R_PPC64_ADDR14_BRTAKEN:
10477 case R_PPC64_ADDR16:
10478 case R_PPC64_ADDR16_DS:
10479 case R_PPC64_ADDR16_HA:
10480 case R_PPC64_ADDR16_HI:
10481 case R_PPC64_ADDR16_HIGHER:
10482 case R_PPC64_ADDR16_HIGHERA:
10483 case R_PPC64_ADDR16_HIGHEST:
10484 case R_PPC64_ADDR16_HIGHESTA:
10485 case R_PPC64_ADDR16_LO:
10486 case R_PPC64_ADDR16_LO_DS:
10487 case R_PPC64_ADDR24:
65f38f15
AM		 10488 case R_PPC64_ADDR32:
10489 case R_PPC64_ADDR64:
10490 case R_PPC64_UADDR16:
10491 case R_PPC64_UADDR32:
10492 case R_PPC64_UADDR64:
ec338859
AM		 10493 /* r_symndx will be zero only for relocs against symbols
10494 from removed linkonce sections, or sections discarded by
10495 a linker script. */
411e1bfb 10496 dodyn:
5d1634d7
AM		 10497 if (r_symndx == 0)
10498 break;
10499 /* Fall thru. */
10500
0b13192e 10501 dodyn2:
5d1634d7 10502 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10503 break;
10504
41bd81ab
AM		 10505 if (NO_OPD_RELOCS && is_opd)
10506 break;
10507
65f38f15 10508 if ((info->shared
4e795f50 10509 && (h == NULL
039b3fef
AM		 10510 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10511 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10512 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10513 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10514 || (ELIMINATE_COPY_RELOCS
10515 && !info->shared
65f38f15 10516 && h != NULL
039b3fef 10517 && h->elf.dynindx != -1
f5385ebf
AM		 10518 && !h->elf.non_got_ref
10519 && h->elf.def_dynamic
10520 && !h->elf.def_regular))
65f38f15
AM		 10521 {
10522 Elf_Internal_Rela outrel;
b34976b6 10523 bfd_boolean skip, relocate;
65f38f15 10524 asection *sreloc;
947216bf 10525 bfd_byte *loc;
1cf1f670 10526 bfd_vma out_off;
65f38f15
AM		 10527
10528 /* When generating a dynamic object, these relocations
10529 are copied into the output file to be resolved at run
10530 time. */
10531
b34976b6
AM		 10532 skip = FALSE;
10533 relocate = FALSE;
65f38f15 10534
1cf1f670
AM		 10535 out_off = _bfd_elf_section_offset (output_bfd, info,
10536 input_section, rel->r_offset);
10537 if (out_off == (bfd_vma) -1)
b34976b6 10538 skip = TRUE;
1cf1f670 10539 else if (out_off == (bfd_vma) -2)
b34976b6 10540 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10541 out_off += (input_section->output_section->vma
10542 + input_section->output_offset);
10543 outrel.r_offset = out_off;
411e1bfb 10544 outrel.r_addend = rel->r_addend;
65f38f15 10545
1cf1f670
AM		 10546 /* Optimize unaligned reloc use. */
10547 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10548 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10549 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10550 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10551 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10552 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10553 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10554 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10555 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10556
65f38f15 10557 if (skip)
0bb2d96a 10558 memset (&outrel, 0, sizeof outrel);
039b3fef 10559 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10560 && !is_opd
10561 && r_type != R_PPC64_TOC)
039b3fef 10562 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10563 else
10564 {
41bd81ab
AM		 10565 /* This symbol is local, or marked to become local,
10566 or this is an opd section reloc which must point
10567 at a local function. */
65f38f15 10568 outrel.r_addend += relocation;
e86ce104 10569 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10570 {
3fad3c7c 10571 if (is_opd && h != NULL)
afbe61cf
AM		 10572 {
10573 /* Lie about opd entries. This case occurs
10574 when building shared libraries and we
10575 reference a function in another shared
3fad3c7c
AM		 10576 lib. The same thing happens for a weak
10577 definition in an application that's
10578 overridden by a strong definition in a
10579 shared lib. (I believe this is a generic
10580 bug in binutils handling of weak syms.)
10581 In these cases we won't use the opd
1e2f5b6e 10582 entry in this lib. */
b34976b6 10583 unresolved_reloc = FALSE;
afbe61cf 10584 }
65f38f15 10585 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10586
10587 /* We need to relocate .opd contents for ld.so.
10588 Prelink also wants simple and consistent rules
10589 for relocs. This make all RELATIVE relocs have
10590 *r_offset equal to r_addend. */
10591 relocate = TRUE;
65f38f15
AM		 10592 }
10593 else
10594 {
10595 long indx = 0;
10596
41bd81ab 10597 if (bfd_is_abs_section (sec))
65f38f15
AM		 10598 ;
10599 else if (sec == NULL || sec->owner == NULL)
10600 {
10601 bfd_set_error (bfd_error_bad_value);
b34976b6 10602 return FALSE;
65f38f15
AM		 10603 }
10604 else
10605 {
10606 asection *osec;
10607
10608 osec = sec->output_section;
10609 indx = elf_section_data (osec)->dynindx;
10610
10611 /* We are turning this relocation into one
10612 against a section symbol, so subtract out
10613 the output section's address but not the
10614 offset of the input section in the output
10615 section. */
10616 outrel.r_addend -= osec->vma;
10617 }
10618
10619 outrel.r_info = ELF64_R_INFO (indx, r_type);
10620 }
10621 }
10622
10623 sreloc = elf_section_data (input_section)->sreloc;
10624 if (sreloc == NULL)
10625 abort ();
10626
947216bf
AM		 10627 loc = sreloc->contents;
10628 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10629 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10630
10631 /* If this reloc is against an external symbol, it will
10632 be computed at runtime, so there's no need to do
81407a69
AM		 10633 anything now. However, for the sake of prelink ensure
10634 that the section contents are a known value. */
65f38f15 10635 if (! relocate)
81407a69
AM		 10636 {
10637 unresolved_reloc = FALSE;
10638 /* The value chosen here is quite arbitrary as ld.so
10639 ignores section contents except for the special
10640 case of .opd where the contents might be accessed
10641 before relocation. Choose zero, as that won't
10642 cause reloc overflow. */
10643 relocation = 0;
10644 addend = 0;
10645 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10646 to improve backward compatibility with older
10647 versions of ld. */
10648 if (r_type == R_PPC64_ADDR64)
10649 addend = outrel.r_addend;
10650 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10651 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10652 addend = (input_section->output_section->vma
10653 + input_section->output_offset
10654 + rel->r_offset);
81407a69 10655 }
65f38f15 10656 }
5bd4f169
AM		 10657 break;
10658
65f38f15
AM		 10659 case R_PPC64_COPY:
10660 case R_PPC64_GLOB_DAT:
10661 case R_PPC64_JMP_SLOT:
10662 case R_PPC64_RELATIVE:
10663 /* We shouldn't ever see these dynamic relocs in relocatable
10664 files. */
ae9a127f 10665 /* Fall through. */
65f38f15
AM		 10666
10667 case R_PPC64_PLTGOT16:
10668 case R_PPC64_PLTGOT16_DS:
10669 case R_PPC64_PLTGOT16_HA:
10670 case R_PPC64_PLTGOT16_HI:
10671 case R_PPC64_PLTGOT16_LO:
10672 case R_PPC64_PLTGOT16_LO_DS:
10673 case R_PPC64_PLTREL32:
10674 case R_PPC64_PLTREL64:
10675 /* These ones haven't been implemented yet. */
10676
10677 (*_bfd_error_handler)
d003868e
AM		 10678 (_("%B: relocation %s is not supported for symbol %s."),
10679 input_bfd,
4ce794b7 10680 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10681
10682 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10683 ret = FALSE;
5bd4f169 10684 continue;
65f38f15 10685 }
5bd4f169 10686
65f38f15
AM		 10687 /* Do any further special processing. */
10688 switch (r_type)
10689 {
10690 default:
10691 break;
10692
10693 case R_PPC64_ADDR16_HA:
10694 case R_PPC64_ADDR16_HIGHERA:
10695 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10696 case R_PPC64_GOT16_HA:
10697 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10698 case R_PPC64_PLT16_HA:
10699 case R_PPC64_TOC16_HA:
10700 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10701 case R_PPC64_TPREL16_HA:
10702 case R_PPC64_DTPREL16_HA:
10703 case R_PPC64_GOT_TLSGD16_HA:
10704 case R_PPC64_GOT_TLSLD16_HA:
10705 case R_PPC64_GOT_TPREL16_HA:
10706 case R_PPC64_GOT_DTPREL16_HA:
10707 case R_PPC64_TPREL16_HIGHER:
10708 case R_PPC64_TPREL16_HIGHERA:
10709 case R_PPC64_TPREL16_HIGHEST:
10710 case R_PPC64_TPREL16_HIGHESTA:
10711 case R_PPC64_DTPREL16_HIGHER:
10712 case R_PPC64_DTPREL16_HIGHERA:
10713 case R_PPC64_DTPREL16_HIGHEST:
10714 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10715 /* It's just possible that this symbol is a weak symbol
10716 that's not actually defined anywhere. In that case,
10717 'sec' would be NULL, and we should leave the symbol
10718 alone (it will be set to zero elsewhere in the link). */
10719 if (sec != NULL)
e515b051
AM		 10720 /* Add 0x10000 if sign bit in 0:15 is set.
10721 Bits 0:15 are not used. */
10722 addend += 0x8000;
65f38f15
AM		 10723 break;
10724
10725 case R_PPC64_ADDR16_DS:
10726 case R_PPC64_ADDR16_LO_DS:
10727 case R_PPC64_GOT16_DS:
10728 case R_PPC64_GOT16_LO_DS:
10729 case R_PPC64_PLT16_LO_DS:
10730 case R_PPC64_SECTOFF_DS:
10731 case R_PPC64_SECTOFF_LO_DS:
10732 case R_PPC64_TOC16_DS:
10733 case R_PPC64_TOC16_LO_DS:
10734 case R_PPC64_PLTGOT16_DS:
10735 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10736 case R_PPC64_GOT_TPREL16_DS:
10737 case R_PPC64_GOT_TPREL16_LO_DS:
10738 case R_PPC64_GOT_DTPREL16_DS:
10739 case R_PPC64_GOT_DTPREL16_LO_DS:
10740 case R_PPC64_TPREL16_DS:
10741 case R_PPC64_TPREL16_LO_DS:
10742 case R_PPC64_DTPREL16_DS:
10743 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10744 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10745 mask = 3;
10746 /* If this reloc is against an lq insn, then the value must be
10747 a multiple of 16. This is somewhat of a hack, but the
10748 "correct" way to do this by defining _DQ forms of all the
10749 _DS relocs bloats all reloc switches in this file. It
10750 doesn't seem to make much sense to use any of these relocs
10751 in data, so testing the insn should be safe. */
494dac0c 10752 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10753 mask = 15;
10754 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10755 {
10756 (*_bfd_error_handler)
d003868e
AM		 10757 (_("%B: error: relocation %s not a multiple of %d"),
10758 input_bfd,
4ce794b7 10759 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10760 mask + 1);
65f38f15 10761 bfd_set_error (bfd_error_bad_value);
b34976b6 10762 ret = FALSE;
65f38f15
AM		 10763 continue;
10764 }
10765 break;
5bd4f169
AM		 10766 }
10767
239e1f3a
AM		 10768 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10769 because such sections are not SEC_ALLOC and thus ld.so will
10770 not process them. */
65f38f15 10771 if (unresolved_reloc
239e1f3a 10772 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10773 && h->elf.def_dynamic))
9c07fe7c
AM		 10774 {
10775 (*_bfd_error_handler)
d003868e
AM		 10776 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10777 input_bfd,
10778 input_section,
9c07fe7c 10779 (long) rel->r_offset,
7b609f53 10780 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10781 h->elf.root.root.string);
b34976b6 10782 ret = FALSE;
9c07fe7c 10783 }
5bd4f169 10784
65f38f15 10785 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10786 input_bfd,
10787 input_section,
10788 contents,
411e1bfb 10789 rel->r_offset,
5bd4f169
AM		 10790 relocation,
10791 addend);
10792
ef60b7ff 10793 if (r != bfd_reloc_ok)
5bd4f169 10794 {
cd27b276
AM		 10795 if (sym_name == NULL)
10796 sym_name = "(null)";
10797 if (r == bfd_reloc_overflow)
5bd4f169 10798 {
cd27b276
AM		 10799 if (warned)
10800 continue;
10801 if (h != NULL
039b3fef 10802 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10803 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10804 {
10805 /* Assume this is a call protected by other code that
10806 detects the symbol is undefined. If this is the case,
10807 we can safely ignore the overflow. If not, the
10808 program is hosed anyway, and a little warning isn't
10809 going to help. */
10810
10811 continue;
10812 }
10813
ef60b7ff 10814 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10815 (info, (h ? &h->elf.root : NULL), sym_name,
10816 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10817 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10818 return FALSE;
ef60b7ff
AM		 10819 }
10820 else
10821 {
10822 (*_bfd_error_handler)
d003868e
AM		 10823 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10824 input_bfd,
10825 input_section,
7b609f53 10826 (long) rel->r_offset,
4ce794b7 10827 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10828 sym_name,
10829 (int) r);
b34976b6 10830 ret = FALSE;
ef60b7ff 10831 }
5bd4f169 10832 }
5bd4f169
AM		 10833 }
10834
645ea6a9
AM		 10835 /* If we're emitting relocations, then shortly after this function
10836 returns, reloc offsets and addends for this section will be
10837 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10838 file rather than the input. Save a copy of the relocs for
10839 opd_entry_value. */
10840 if (is_opd && info->emitrelocations)
10841 {
10842 bfd_size_type amt;
10843 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10844 rel = bfd_alloc (input_bfd, amt);
10845 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10846 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10847 if (rel == NULL)
10848 return FALSE;
10849 memcpy (rel, relocs, amt);
10850 }
5bd4f169
AM		 10851 return ret;
10852}
10853
754021d0
AM		 10854/* Adjust the value of any local symbols in opd sections. */
10855
10856static bfd_boolean
10857ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10858 const char *name ATTRIBUTE_UNUSED,
10859 Elf_Internal_Sym *elfsym,
10860 asection *input_sec,
10861 struct elf_link_hash_entry *h)
10862{
4025353c 10863 long *opd_adjust, adjust;
754021d0
AM		 10864 bfd_vma value;
10865
4025353c
AM		 10866 if (h != NULL)
10867 return TRUE;
10868
10869 opd_adjust = get_opd_info (input_sec);
10870 if (opd_adjust == NULL)
754021d0
AM		 10871 return TRUE;
10872
10873 value = elfsym->st_value - input_sec->output_offset;
10874 if (!info->relocatable)
10875 value -= input_sec->output_section->vma;
10876
3f764659 10877 adjust = opd_adjust[value / 8];
4025353c
AM		 10878 if (adjust == -1)
10879 elfsym->st_value = 0;
10880 else
10881 elfsym->st_value += adjust;
754021d0
AM		 10882 return TRUE;
10883}
10884
5bd4f169
AM		 10885/* Finish up dynamic symbol handling. We set the contents of various
10886 dynamic sections here. */
10887
b34976b6 10888static bfd_boolean
4ce794b7
AM		 10889ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10890 struct bfd_link_info *info,
10891 struct elf_link_hash_entry *h,
10892 Elf_Internal_Sym *sym)
5bd4f169 10893{
65f38f15 10894 struct ppc_link_hash_table *htab;
5bd4f169 10895 bfd *dynobj;
8387904d
AM		 10896 struct plt_entry *ent;
10897 Elf_Internal_Rela rela;
10898 bfd_byte *loc;
5bd4f169 10899
65f38f15
AM		 10900 htab = ppc_hash_table (info);
10901 dynobj = htab->elf.dynobj;
5bd4f169 10902
8387904d
AM		 10903 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10904 if (ent->plt.offset != (bfd_vma) -1)
10905 {
10906 /* This symbol has an entry in the procedure linkage
10907 table. Set it up. */
10908
10909 if (htab->plt == NULL
10910 || htab->relplt == NULL
10911 || htab->glink == NULL)
10912 abort ();
10913
10914 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10915 fill in the PLT entry. */
10916 rela.r_offset = (htab->plt->output_section->vma
10917 + htab->plt->output_offset
10918 + ent->plt.offset);
10919 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10920 rela.r_addend = ent->addend;
10921
10922 loc = htab->relplt->contents;
10923 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10924 * sizeof (Elf64_External_Rela));
10925 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10926 }
5bd4f169 10927
f5385ebf 10928 if (h->needs_copy)
5bd4f169 10929 {
5bd4f169 10930 Elf_Internal_Rela rela;
947216bf 10931 bfd_byte *loc;
5bd4f169 10932
65f38f15 10933 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10934
65f38f15
AM		 10935 if (h->dynindx == -1
10936 || (h->root.type != bfd_link_hash_defined
10937 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10938 || htab->relbss == NULL)
65f38f15 10939 abort ();
5bd4f169
AM		 10940
10941 rela.r_offset = (h->root.u.def.value
10942 + h->root.u.def.section->output_section->vma
10943 + h->root.u.def.section->output_offset);
10944 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10945 rela.r_addend = 0;
4ce794b7
AM		 10946 loc = htab->relbss->contents;
10947 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10948 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10949 }
10950
5bd4f169
AM		 10951 /* Mark some specially defined symbols as absolute. */
10952 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10953 sym->st_shndx = SHN_ABS;
10954
b34976b6 10955 return TRUE;
5bd4f169
AM		 10956}
10957
65f38f15
AM		 10958/* Used to decide how to sort relocs in an optimal manner for the
10959 dynamic linker, before writing them out. */
10960
10961static enum elf_reloc_type_class
4ce794b7 10962ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10963{
04c9666a 10964 enum elf_ppc64_reloc_type r_type;
a33d1f77 10965
4ce794b7 10966 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10967 switch (r_type)
65f38f15
AM		 10968 {
10969 case R_PPC64_RELATIVE:
10970 return reloc_class_relative;
10971 case R_PPC64_JMP_SLOT:
10972 return reloc_class_plt;
10973 case R_PPC64_COPY:
10974 return reloc_class_copy;
10975 default:
10976 return reloc_class_normal;
10977 }
10978}
10979
5bd4f169
AM		 10980/* Finish up the dynamic sections. */
10981
b34976b6 10982static bfd_boolean
4ce794b7
AM		 10983ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10984 struct bfd_link_info *info)
5bd4f169 10985{
65f38f15
AM		 10986 struct ppc_link_hash_table *htab;
10987 bfd *dynobj;
5bd4f169 10988 asection *sdyn;
5bd4f169 10989
65f38f15
AM		 10990 htab = ppc_hash_table (info);
10991 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10992 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10993
65f38f15 10994 if (htab->elf.dynamic_sections_created)
5bd4f169 10995 {
5bd4f169
AM		 10996 Elf64_External_Dyn *dyncon, *dynconend;
10997
4ce794b7 10998 if (sdyn == NULL || htab->got == NULL)
65f38f15 10999 abort ();
5bd4f169
AM		 11000
11001 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11002 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11003 for (; dyncon < dynconend; dyncon++)
11004 {
11005 Elf_Internal_Dyn dyn;
19397422 11006 asection *s;
5bd4f169
AM		 11007
11008 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11009
11010 switch (dyn.d_tag)
11011 {
65f38f15
AM		 11012 default:
11013 continue;
5bd4f169 11014
5d1634d7 11015 case DT_PPC64_GLINK:
4ce794b7 11016 s = htab->glink;
6348e046 11017 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11018 /* We stupidly defined DT_PPC64_GLINK to be the start
11019 of glink rather than the first entry point, which is
11020 what ld.so needs, and now have a bigger stub to
11021 support automatic multiple TOCs. */
11022 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11023 break;
11024
19397422
AM		 11025 case DT_PPC64_OPD:
11026 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11027 if (s == NULL)
11028 continue;
11029 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11030 break;
11031
11032 case DT_PPC64_OPDSZ:
11033 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11034 if (s == NULL)
11035 continue;
eea6121a 11036 dyn.d_un.d_val = s->size;
19397422
AM		 11037 break;
11038
65f38f15 11039 case DT_PLTGOT:
4ce794b7 11040 s = htab->plt;
6348e046 11041 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11042 break;
11043
11044 case DT_JMPREL:
4ce794b7 11045 s = htab->relplt;
6348e046 11046 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11047 break;
5bd4f169 11048
65f38f15 11049 case DT_PLTRELSZ:
eea6121a 11050 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11051 break;
11052
11053 case DT_RELASZ:
11054 /* Don't count procedure linkage table relocs in the
11055 overall reloc count. */
4ce794b7 11056 s = htab->relplt;
6348e046
AM		 11057 if (s == NULL)
11058 continue;
eea6121a 11059 dyn.d_un.d_val -= s->size;
6348e046
AM		 11060 break;
11061
11062 case DT_RELA:
11063 /* We may not be using the standard ELF linker script.
11064 If .rela.plt is the first .rela section, we adjust
11065 DT_RELA to not include it. */
4ce794b7 11066 s = htab->relplt;
6348e046
AM		 11067 if (s == NULL)
11068 continue;
11069 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11070 continue;
eea6121a 11071 dyn.d_un.d_ptr += s->size;
65f38f15 11072 break;
5bd4f169 11073 }
5bd4f169 11074
65f38f15 11075 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11076 }
5bd4f169
AM		 11077 }
11078
eea6121a 11079 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11080 {
11081 /* Fill in the first entry in the global offset table.
11082 We use it to hold the link-time TOCbase. */
11083 bfd_put_64 (output_bfd,
60ee0d4a 11084 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11085 htab->got->contents);
5d1634d7
AM		 11086
11087 /* Set .got entry size. */
4ce794b7 11088 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11089 }
11090
eea6121a 11091 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11092 {
11093 /* Set .plt entry size. */
4ce794b7 11094 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11095 = PLT_ENTRY_SIZE;
11096 }
11097
e717da7e 11098 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11099 since we didn't add them to DYNOBJ. We know dynobj is the first
11100 bfd. */
e717da7e
AM		 11101 while ((dynobj = dynobj->link_next) != NULL)
11102 {
11103 asection *s;
7b53ace3 11104
ee75fd95 11105 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11106 continue;
11107
e717da7e
AM		 11108 s = ppc64_elf_tdata (dynobj)->got;
11109 if (s != NULL
eea6121a 11110 && s->size != 0
e717da7e
AM		 11111 && s->output_section != bfd_abs_section_ptr
11112 && !bfd_set_section_contents (output_bfd, s->output_section,
11113 s->contents, s->output_offset,
eea6121a 11114 s->size))
e717da7e
AM		 11115 return FALSE;
11116 s = ppc64_elf_tdata (dynobj)->relgot;
11117 if (s != NULL
eea6121a 11118 && s->size != 0
e717da7e
AM		 11119 && s->output_section != bfd_abs_section_ptr
11120 && !bfd_set_section_contents (output_bfd, s->output_section,
11121 s->contents, s->output_offset,
eea6121a 11122 s->size))
e717da7e
AM		 11123 return FALSE;
11124 }
f6c52c13 11125
b34976b6 11126 return TRUE;
5bd4f169
AM		 11127}
11128
5bd4f169 11129#include "elf64-target.h"
GDB Binutils - Deliverables
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