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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3eb128b2 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169
AM		 27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
04c9666a 33#include "elf/ppc64.h"
5d1634d7 34#include "elf64-ppc.h"
5bd4f169 35
805fc799 36static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 38static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 54static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 56
ad8e1ba5
AM		 57#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58#define TARGET_LITTLE_NAME "elf64-powerpcle"
59#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60#define TARGET_BIG_NAME "elf64-powerpc"
61#define ELF_ARCH bfd_arch_powerpc
62#define ELF_MACHINE_CODE EM_PPC64
63#define ELF_MAXPAGESIZE 0x10000
64#define elf_info_to_howto ppc64_elf_info_to_howto
65
66#define elf_backend_want_got_sym 0
67#define elf_backend_want_plt_sym 0
68#define elf_backend_plt_alignment 3
69#define elf_backend_plt_not_loaded 1
ad8e1ba5 70#define elf_backend_got_header_size 8
ad8e1ba5
AM		 71#define elf_backend_can_gc_sections 1
72#define elf_backend_can_refcount 1
73#define elf_backend_rela_normal 1
74
e717da7e 75#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 76#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 81#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 82
83#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 84#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 86#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 88#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d
AM		 89#define elf_backend_check_directives ppc64_elf_check_directives
90#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5
AM		 91#define elf_backend_check_relocs ppc64_elf_check_relocs
92#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95#define elf_backend_hide_symbol ppc64_elf_hide_symbol
96#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98#define elf_backend_relocate_section ppc64_elf_relocate_section
99#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 102#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
2f89ff8d 103#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 104
5bd4f169
AM		 105/* The name of the dynamic interpreter. This is put in the .interp
106 section. */
107#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
108
109/* The size in bytes of an entry in the procedure linkage table. */
110#define PLT_ENTRY_SIZE 24
111
112/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 113#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 114
115/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 116#define TOC_BASE_OFF 0x8000
117
118/* Offset of tp and dtp pointers from start of TLS block. */
119#define TP_OFFSET 0x7000
120#define DTP_OFFSET 0x8000
5bd4f169 121
ad8e1ba5
AM		 122/* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 126#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132#define BCTR 0x4e800420 /* bctr */
133
5d1634d7 134
ad8e1ba5
AM		 135#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
137
138#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
139
140/* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142#define GLINK_CALL_STUB_SIZE (16*4)
143#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
155 /* ld %r2,8(%r12) */
156 /* mtctr %r11 */
157 /* ld %r11,16(%r12) */
158 /* bctr */
5d1634d7
AM		 159
160/* Pad with this. */
161#define NOP 0x60000000
162
721956f4
AM		 163/* Some other nops. */
164#define CROR_151515 0x4def7b82
165#define CROR_313131 0x4ffffb82
166
cedb70c5 167/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 168#define LI_R0_0 0x38000000 /* li %r0,0 */
169#define B_DOT 0x48000000 /* b . */
170
171/* After that, we need two instructions to load the index, followed by
172 a branch. */
173#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 174#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 175
deb0e272
AM		 176/* Instructions used by the save and restore reg functions. */
177#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 181#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 183#define LI_R12_0 0x39800000 /* li %r12,0 */
184#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 187#define BLR 0x4e800020 /* blr */
188
41bd81ab
AM		 189/* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 192 relocate .opd without reloc entries. */
41bd81ab
AM		 193#ifndef NO_OPD_RELOCS
194#define NO_OPD_RELOCS 0
195#endif
5bd4f169 196\f
f5e87a1d 197#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 198
5bd4f169 199/* Relocation HOWTO's. */
04c9666a 200static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 201
202static reloc_howto_type ppc64_elf_howto_raw[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE, /* type */
205 0, /* rightshift */
411e1bfb
AM		 206 2, /* size (0 = byte, 1 = short, 2 = long) */
207 32, /* bitsize */
b34976b6 208 FALSE, /* pc_relative */
5bd4f169 209 0, /* bitpos */
f5e87a1d 210 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_NONE", /* name */
b34976b6 213 FALSE, /* partial_inplace */
d006db6c 214 0, /* src_mask */
5bd4f169 215 0, /* dst_mask */
b34976b6 216 FALSE), /* pcrel_offset */
5bd4f169
AM		 217
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 32, /* bitsize */
b34976b6 223 FALSE, /* pc_relative */
5bd4f169
AM		 224 0, /* bitpos */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR32", /* name */
b34976b6 228 FALSE, /* partial_inplace */
5bd4f169
AM		 229 0, /* src_mask */
230 0xffffffff, /* dst_mask */
b34976b6 231 FALSE), /* pcrel_offset */
5bd4f169
AM		 232
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24, /* type */
236 0, /* rightshift */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
238 26, /* bitsize */
b34976b6 239 FALSE, /* pc_relative */
5bd4f169
AM		 240 0, /* bitpos */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC64_ADDR24", /* name */
b34976b6 244 FALSE, /* partial_inplace */
d006db6c 245 0, /* src_mask */
f5e87a1d 246 0x03fffffc, /* dst_mask */
b34976b6 247 FALSE), /* pcrel_offset */
5bd4f169
AM		 248
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16, /* type */
251 0, /* rightshift */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
b34976b6 254 FALSE, /* pc_relative */
5bd4f169
AM		 255 0, /* bitpos */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16", /* name */
b34976b6 259 FALSE, /* partial_inplace */
5bd4f169
AM		 260 0, /* src_mask */
261 0xffff, /* dst_mask */
b34976b6 262 FALSE), /* pcrel_offset */
5bd4f169
AM		 263
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO, /* type */
266 0, /* rightshift */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
b34976b6 269 FALSE, /* pc_relative */
5bd4f169
AM		 270 0, /* bitpos */
271 complain_overflow_dont,/* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16_LO", /* name */
b34976b6 274 FALSE, /* partial_inplace */
5bd4f169
AM		 275 0, /* src_mask */
276 0xffff, /* dst_mask */
b34976b6 277 FALSE), /* pcrel_offset */
5bd4f169
AM		 278
279 /* Bits 16-31 of an address. */
280 HOWTO (R_PPC64_ADDR16_HI, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
b34976b6 284 FALSE, /* pc_relative */
5bd4f169
AM		 285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_HI", /* name */
b34976b6 289 FALSE, /* partial_inplace */
5bd4f169
AM		 290 0, /* src_mask */
291 0xffff, /* dst_mask */
b34976b6 292 FALSE), /* pcrel_offset */
5bd4f169
AM		 293
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA, /* type */
297 16, /* rightshift */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
5bd4f169
AM		 301 0, /* bitpos */
302 complain_overflow_dont, /* complain_on_overflow */
805fc799 303 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 304 "R_PPC64_ADDR16_HA", /* name */
b34976b6 305 FALSE, /* partial_inplace */
5bd4f169
AM		 306 0, /* src_mask */
307 0xffff, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
5bd4f169
AM		 309
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
b34976b6 316 FALSE, /* pc_relative */
5bd4f169
AM		 317 0, /* bitpos */
318 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 319 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 320 "R_PPC64_ADDR14", /* name */
b34976b6 321 FALSE, /* partial_inplace */
d006db6c 322 0, /* src_mask */
f5e87a1d 323 0x0000fffc, /* dst_mask */
b34976b6 324 FALSE), /* pcrel_offset */
5bd4f169
AM		 325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
b34976b6 333 FALSE, /* pc_relative */
5bd4f169
AM		 334 0, /* bitpos */
335 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 336 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 337 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 338 FALSE, /* partial_inplace */
d006db6c 339 0, /* src_mask */
f5e87a1d 340 0x0000fffc, /* dst_mask */
b34976b6 341 FALSE), /* pcrel_offset */
5bd4f169
AM		 342
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 16, /* bitsize */
b34976b6 350 FALSE, /* pc_relative */
5bd4f169
AM		 351 0, /* bitpos */
352 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 353 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 355 FALSE, /* partial_inplace */
d006db6c 356 0, /* src_mask */
f5e87a1d 357 0x0000fffc, /* dst_mask */
b34976b6 358 FALSE), /* pcrel_offset */
5bd4f169
AM		 359
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 26, /* bitsize */
b34976b6 365 TRUE, /* pc_relative */
5bd4f169
AM		 366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
2441e016 368 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 369 "R_PPC64_REL24", /* name */
b34976b6 370 FALSE, /* partial_inplace */
d006db6c 371 0, /* src_mask */
f5e87a1d 372 0x03fffffc, /* dst_mask */
b34976b6 373 TRUE), /* pcrel_offset */
5bd4f169
AM		 374
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
b34976b6 380 TRUE, /* pc_relative */
5bd4f169
AM		 381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
2441e016 383 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 384 "R_PPC64_REL14", /* name */
b34976b6 385 FALSE, /* partial_inplace */
d006db6c 386 0, /* src_mask */
f5e87a1d 387 0x0000fffc, /* dst_mask */
b34976b6 388 TRUE), /* pcrel_offset */
5bd4f169
AM		 389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
392 zero. */
393 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 TRUE, /* pc_relative */
5bd4f169
AM		 398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
805fc799 400 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 401 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 402 FALSE, /* partial_inplace */
d006db6c 403 0, /* src_mask */
f5e87a1d 404 0x0000fffc, /* dst_mask */
b34976b6 405 TRUE), /* pcrel_offset */
5bd4f169
AM		 406
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
409 be zero. */
410 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
b34976b6 414 TRUE, /* pc_relative */
5bd4f169
AM		 415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
805fc799 417 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 418 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 419 FALSE, /* partial_inplace */
d006db6c 420 0, /* src_mask */
f5e87a1d 421 0x0000fffc, /* dst_mask */
b34976b6 422 TRUE), /* pcrel_offset */
5bd4f169
AM		 423
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
425 symbol. */
426 HOWTO (R_PPC64_GOT16, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
b34976b6 430 FALSE, /* pc_relative */
5bd4f169
AM		 431 0, /* bitpos */
432 complain_overflow_signed, /* complain_on_overflow */
805fc799 433 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 434 "R_PPC64_GOT16", /* name */
b34976b6 435 FALSE, /* partial_inplace */
5bd4f169
AM		 436 0, /* src_mask */
437 0xffff, /* dst_mask */
b34976b6 438 FALSE), /* pcrel_offset */
5bd4f169
AM		 439
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC64_GOT16_LO, /* type */
443 0, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
b34976b6 446 FALSE, /* pc_relative */
5bd4f169
AM		 447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
805fc799 449 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 450 "R_PPC64_GOT16_LO", /* name */
b34976b6 451 FALSE, /* partial_inplace */
5bd4f169
AM		 452 0, /* src_mask */
453 0xffff, /* dst_mask */
b34976b6 454 FALSE), /* pcrel_offset */
5bd4f169
AM		 455
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC64_GOT16_HI, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
b34976b6 462 FALSE, /* pc_relative */
5bd4f169
AM		 463 0, /* bitpos */
464 complain_overflow_dont,/* complain_on_overflow */
805fc799 465 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 466 "R_PPC64_GOT16_HI", /* name */
b34976b6 467 FALSE, /* partial_inplace */
5bd4f169
AM		 468 0, /* src_mask */
469 0xffff, /* dst_mask */
b34976b6 470 FALSE), /* pcrel_offset */
5bd4f169
AM		 471
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
473 the symbol. */
474 HOWTO (R_PPC64_GOT16_HA, /* type */
475 16, /* rightshift */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
477 16, /* bitsize */
b34976b6 478 FALSE, /* pc_relative */
5bd4f169
AM		 479 0, /* bitpos */
480 complain_overflow_dont,/* complain_on_overflow */
805fc799 481 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 482 "R_PPC64_GOT16_HA", /* name */
b34976b6 483 FALSE, /* partial_inplace */
5bd4f169
AM		 484 0, /* src_mask */
485 0xffff, /* dst_mask */
b34976b6 486 FALSE), /* pcrel_offset */
5bd4f169
AM		 487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY, /* type */
494 0, /* rightshift */
f5e87a1d
AM		 495 0, /* this one is variable size */
496 0, /* bitsize */
b34976b6 497 FALSE, /* pc_relative */
5bd4f169 498 0, /* bitpos */
f5e87a1d
AM		 499 complain_overflow_dont, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 501 "R_PPC64_COPY", /* name */
b34976b6 502 FALSE, /* partial_inplace */
5bd4f169
AM		 503 0, /* src_mask */
504 0, /* dst_mask */
b34976b6 505 FALSE), /* pcrel_offset */
5bd4f169
AM		 506
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC64_GLOB_DAT, /* type */
510 0, /* rightshift */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
512 64, /* bitsize */
b34976b6 513 FALSE, /* pc_relative */
5bd4f169
AM		 514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
805fc799 516 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 517 "R_PPC64_GLOB_DAT", /* name */
b34976b6 518 FALSE, /* partial_inplace */
5bd4f169 519 0, /* src_mask */
f5e87a1d 520 ONES (64), /* dst_mask */
b34976b6 521 FALSE), /* pcrel_offset */
5bd4f169
AM		 522
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT, /* type */
526 0, /* rightshift */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
528 0, /* bitsize */
b34976b6 529 FALSE, /* pc_relative */
5bd4f169
AM		 530 0, /* bitpos */
531 complain_overflow_dont, /* complain_on_overflow */
805fc799 532 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 533 "R_PPC64_JMP_SLOT", /* name */
b34976b6 534 FALSE, /* partial_inplace */
5bd4f169
AM		 535 0, /* src_mask */
536 0, /* dst_mask */
b34976b6 537 FALSE), /* pcrel_offset */
5bd4f169
AM		 538
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
541 addend. */
542 HOWTO (R_PPC64_RELATIVE, /* type */
543 0, /* rightshift */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
545 64, /* bitsize */
b34976b6 546 FALSE, /* pc_relative */
5bd4f169
AM		 547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
b34976b6 551 FALSE, /* partial_inplace */
5bd4f169 552 0, /* src_mask */
f5e87a1d 553 ONES (64), /* dst_mask */
b34976b6 554 FALSE), /* pcrel_offset */
5bd4f169
AM		 555
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 32, /* bitsize */
b34976b6 561 FALSE, /* pc_relative */
5bd4f169
AM		 562 0, /* bitpos */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_UADDR32", /* name */
b34976b6 566 FALSE, /* partial_inplace */
5bd4f169
AM		 567 0, /* src_mask */
568 0xffffffff, /* dst_mask */
b34976b6 569 FALSE), /* pcrel_offset */
5bd4f169
AM		 570
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16, /* type */
573 0, /* rightshift */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
575 16, /* bitsize */
b34976b6 576 FALSE, /* pc_relative */
5bd4f169
AM		 577 0, /* bitpos */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR16", /* name */
b34976b6 581 FALSE, /* partial_inplace */
5bd4f169
AM		 582 0, /* src_mask */
583 0xffff, /* dst_mask */
b34976b6 584 FALSE), /* pcrel_offset */
5bd4f169
AM		 585
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 32, /* bitsize */
b34976b6 591 TRUE, /* pc_relative */
5bd4f169 592 0, /* bitpos */
cedb70c5 593 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 594 complain_overflow_signed, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC64_REL32", /* name */
b34976b6 597 FALSE, /* partial_inplace */
5bd4f169
AM		 598 0, /* src_mask */
599 0xffffffff, /* dst_mask */
b34976b6 600 TRUE), /* pcrel_offset */
5bd4f169 601
10ed1bba 602 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 603 HOWTO (R_PPC64_PLT32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
b34976b6 607 FALSE, /* pc_relative */
5bd4f169
AM		 608 0, /* bitpos */
609 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 610 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 611 "R_PPC64_PLT32", /* name */
b34976b6 612 FALSE, /* partial_inplace */
5bd4f169 613 0, /* src_mask */
f5e87a1d 614 0xffffffff, /* dst_mask */
b34976b6 615 FALSE), /* pcrel_offset */
5bd4f169
AM		 616
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
b34976b6 623 TRUE, /* pc_relative */
5bd4f169
AM		 624 0, /* bitpos */
625 complain_overflow_signed, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
b34976b6 628 FALSE, /* partial_inplace */
5bd4f169 629 0, /* src_mask */
f5e87a1d 630 0xffffffff, /* dst_mask */
b34976b6 631 TRUE), /* pcrel_offset */
5bd4f169
AM		 632
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
634 the symbol. */
635 HOWTO (R_PPC64_PLT16_LO, /* type */
636 0, /* rightshift */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
638 16, /* bitsize */
b34976b6 639 FALSE, /* pc_relative */
5bd4f169
AM		 640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
805fc799 642 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 643 "R_PPC64_PLT16_LO", /* name */
b34976b6 644 FALSE, /* partial_inplace */
5bd4f169
AM		 645 0, /* src_mask */
646 0xffff, /* dst_mask */
b34976b6 647 FALSE), /* pcrel_offset */
5bd4f169
AM		 648
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC64_PLT16_HI, /* type */
652 16, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
b34976b6 655 FALSE, /* pc_relative */
5bd4f169
AM		 656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
805fc799 658 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 659 "R_PPC64_PLT16_HI", /* name */
b34976b6 660 FALSE, /* partial_inplace */
5bd4f169
AM		 661 0, /* src_mask */
662 0xffff, /* dst_mask */
b34976b6 663 FALSE), /* pcrel_offset */
5bd4f169
AM		 664
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC64_PLT16_HA, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
b34976b6 671 FALSE, /* pc_relative */
5bd4f169
AM		 672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
805fc799 674 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 675 "R_PPC64_PLT16_HA", /* name */
b34976b6 676 FALSE, /* partial_inplace */
5bd4f169
AM		 677 0, /* src_mask */
678 0xffff, /* dst_mask */
b34976b6 679 FALSE), /* pcrel_offset */
5bd4f169 680
c061c2d8 681 /* 16-bit section relative relocation. */
5bd4f169
AM		 682 HOWTO (R_PPC64_SECTOFF, /* type */
683 0, /* rightshift */
c061c2d8
AM		 684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
5bd4f169
AM		 687 0, /* bitpos */
688 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 689 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 690 "R_PPC64_SECTOFF", /* name */
b34976b6 691 FALSE, /* partial_inplace */
5bd4f169 692 0, /* src_mask */
c061c2d8 693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
5bd4f169 695
c061c2d8 696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 697 HOWTO (R_PPC64_SECTOFF_LO, /* type */
698 0, /* rightshift */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
5bd4f169
AM		 702 0, /* bitpos */
703 complain_overflow_dont, /* complain_on_overflow */
805fc799 704 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 705 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 706 FALSE, /* partial_inplace */
5bd4f169
AM		 707 0, /* src_mask */
708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
5bd4f169
AM		 710
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI, /* type */
713 16, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
5bd4f169
AM		 717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
805fc799 719 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 720 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 721 FALSE, /* partial_inplace */
5bd4f169
AM		 722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
5bd4f169
AM		 725
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
5bd4f169
AM		 732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
805fc799 734 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 735 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 736 FALSE, /* partial_inplace */
5bd4f169
AM		 737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
5bd4f169 740
04c9666a
AM		 741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 743 2, /* rightshift */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
745 30, /* bitsize */
b34976b6 746 TRUE, /* pc_relative */
5bd4f169
AM		 747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
04c9666a 750 "R_PPC64_REL30", /* name */
b34976b6 751 FALSE, /* partial_inplace */
d006db6c 752 0, /* src_mask */
5bd4f169 753 0xfffffffc, /* dst_mask */
b34976b6 754 TRUE), /* pcrel_offset */
5bd4f169
AM		 755
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
757
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64, /* type */
760 0, /* rightshift */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
762 64, /* bitsize */
b34976b6 763 FALSE, /* pc_relative */
5bd4f169
AM		 764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR64", /* name */
b34976b6 768 FALSE, /* partial_inplace */
5bd4f169 769 0, /* src_mask */
f5e87a1d 770 ONES (64), /* dst_mask */
b34976b6 771 FALSE), /* pcrel_offset */
5bd4f169
AM		 772
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
775 32, /* rightshift */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
777 16, /* bitsize */
b34976b6 778 FALSE, /* pc_relative */
5bd4f169
AM		 779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 783 FALSE, /* partial_inplace */
5bd4f169
AM		 784 0, /* src_mask */
785 0xffff, /* dst_mask */
b34976b6 786 FALSE), /* pcrel_offset */
5bd4f169
AM		 787
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
791 32, /* rightshift */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
b34976b6 794 FALSE, /* pc_relative */
5bd4f169
AM		 795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
805fc799 797 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 798 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 799 FALSE, /* partial_inplace */
5bd4f169
AM		 800 0, /* src_mask */
801 0xffff, /* dst_mask */
b34976b6 802 FALSE), /* pcrel_offset */
5bd4f169
AM		 803
804 /* The bits 48-63 of an address. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
806 48, /* rightshift */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
b34976b6 809 FALSE, /* pc_relative */
5bd4f169
AM		 810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 814 FALSE, /* partial_inplace */
5bd4f169
AM		 815 0, /* src_mask */
816 0xffff, /* dst_mask */
b34976b6 817 FALSE), /* pcrel_offset */
5bd4f169
AM		 818
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
822 48, /* rightshift */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
b34976b6 825 FALSE, /* pc_relative */
5bd4f169
AM		 826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
805fc799 828 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 829 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 830 FALSE, /* partial_inplace */
5bd4f169
AM		 831 0, /* src_mask */
832 0xffff, /* dst_mask */
b34976b6 833 FALSE), /* pcrel_offset */
5bd4f169
AM		 834
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64, /* type */
837 0, /* rightshift */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
839 64, /* bitsize */
b34976b6 840 FALSE, /* pc_relative */
5bd4f169
AM		 841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_UADDR64", /* name */
b34976b6 845 FALSE, /* partial_inplace */
5bd4f169 846 0, /* src_mask */
f5e87a1d 847 ONES (64), /* dst_mask */
b34976b6 848 FALSE), /* pcrel_offset */
5bd4f169
AM		 849
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64, /* type */
852 0, /* rightshift */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 64, /* bitsize */
b34976b6 855 TRUE, /* pc_relative */
5bd4f169
AM		 856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_REL64", /* name */
b34976b6 860 FALSE, /* partial_inplace */
5bd4f169 861 0, /* src_mask */
f5e87a1d 862 ONES (64), /* dst_mask */
b34976b6 863 TRUE), /* pcrel_offset */
5bd4f169 864
cedb70c5 865 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 866 HOWTO (R_PPC64_PLT64, /* type */
867 0, /* rightshift */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
869 64, /* bitsize */
b34976b6 870 FALSE, /* pc_relative */
5bd4f169
AM		 871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
805fc799 873 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 874 "R_PPC64_PLT64", /* name */
b34976b6 875 FALSE, /* partial_inplace */
5bd4f169 876 0, /* src_mask */
f5e87a1d 877 ONES (64), /* dst_mask */
b34976b6 878 FALSE), /* pcrel_offset */
5bd4f169
AM		 879
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
881 table. */
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64, /* type */
884 0, /* rightshift */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
886 64, /* bitsize */
b34976b6 887 TRUE, /* pc_relative */
5bd4f169
AM		 888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
805fc799 890 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 891 "R_PPC64_PLTREL64", /* name */
b34976b6 892 FALSE, /* partial_inplace */
5bd4f169 893 0, /* src_mask */
f5e87a1d 894 ONES (64), /* dst_mask */
b34976b6 895 TRUE), /* pcrel_offset */
5bd4f169
AM		 896
897 /* 16 bit TOC-relative relocation. */
898
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16, /* type */
901 0, /* rightshift */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
903 16, /* bitsize */
b34976b6 904 FALSE, /* pc_relative */
5bd4f169
AM		 905 0, /* bitpos */
906 complain_overflow_signed, /* complain_on_overflow */
805fc799 907 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 908 "R_PPC64_TOC16", /* name */
b34976b6 909 FALSE, /* partial_inplace */
5bd4f169
AM		 910 0, /* src_mask */
911 0xffff, /* dst_mask */
b34976b6 912 FALSE), /* pcrel_offset */
5bd4f169
AM		 913
914 /* 16 bit TOC-relative relocation without overflow. */
915
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO, /* type */
918 0, /* rightshift */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
b34976b6 921 FALSE, /* pc_relative */
5bd4f169
AM		 922 0, /* bitpos */
923 complain_overflow_dont, /* complain_on_overflow */
805fc799 924 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 925 "R_PPC64_TOC16_LO", /* name */
b34976b6 926 FALSE, /* partial_inplace */
5bd4f169
AM		 927 0, /* src_mask */
928 0xffff, /* dst_mask */
b34976b6 929 FALSE), /* pcrel_offset */
5bd4f169
AM		 930
931 /* 16 bit TOC-relative relocation, high 16 bits. */
932
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI, /* type */
935 16, /* rightshift */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
b34976b6 938 FALSE, /* pc_relative */
5bd4f169
AM		 939 0, /* bitpos */
940 complain_overflow_dont, /* complain_on_overflow */
805fc799 941 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 942 "R_PPC64_TOC16_HI", /* name */
b34976b6 943 FALSE, /* partial_inplace */
5bd4f169
AM		 944 0, /* src_mask */
945 0xffff, /* dst_mask */
b34976b6 946 FALSE), /* pcrel_offset */
5bd4f169
AM		 947
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
950 negative. */
951
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA, /* type */
954 16, /* rightshift */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
956 16, /* bitsize */
b34976b6 957 FALSE, /* pc_relative */
5bd4f169
AM		 958 0, /* bitpos */
959 complain_overflow_dont, /* complain_on_overflow */
805fc799 960 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 961 "R_PPC64_TOC16_HA", /* name */
b34976b6 962 FALSE, /* partial_inplace */
5bd4f169
AM		 963 0, /* src_mask */
964 0xffff, /* dst_mask */
b34976b6 965 FALSE), /* pcrel_offset */
5bd4f169
AM		 966
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
968
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC, /* type */
971 0, /* rightshift */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
973 64, /* bitsize */
b34976b6 974 FALSE, /* pc_relative */
5bd4f169
AM		 975 0, /* bitpos */
976 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 977 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 978 "R_PPC64_TOC", /* name */
b34976b6 979 FALSE, /* partial_inplace */
5bd4f169 980 0, /* src_mask */
f5e87a1d 981 ONES (64), /* dst_mask */
b34976b6 982 FALSE), /* pcrel_offset */
5bd4f169
AM		 983
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16, /* type */
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
b34976b6 997 FALSE, /* pc_relative */
5bd4f169
AM		 998 0, /* bitpos */
999 complain_overflow_signed, /* complain_on_overflow */
805fc799 1000 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1010 0, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 16, /* bitsize */
1013 FALSE, /* pc_relative */
1014 0, /* bitpos */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE, /* partial_inplace */
1019 0, /* src_mask */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1022
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 16, /* bitsize */
1029 FALSE, /* pc_relative */
1030 0, /* bitpos */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE, /* partial_inplace */
1035 0, /* src_mask */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1038
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1041 is negative. */
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_DS, /* type */
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_bitfield, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_signed, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_PLT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_bitfield, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1149 0, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_DS, /* type */
1164 0, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1179 0, /* rightshift */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 16, /* bitsize */
1182 FALSE, /* pc_relative */
1183 0, /* bitpos */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1188 0, /* src_mask */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1191
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1195 0, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 16, /* bitsize */
1198 FALSE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE, /* partial_inplace */
1204 0, /* src_mask */
1205 0xfffc, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1207
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1211 0, /* rightshift */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 16, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0xfffc, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* Marker reloc for TLS. */
1225 HOWTO (R_PPC64_TLS,
1226 0, /* rightshift */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 32, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE, /* partial_inplace */
1235 0, /* src_mask */
1236 0, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64,
1242 0, /* rightshift */
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1244 64, /* bitsize */
1245 FALSE, /* pc_relative */
1246 0, /* bitpos */
1247 complain_overflow_dont, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE, /* partial_inplace */
1251 0, /* src_mask */
1252 ONES (64), /* dst_mask */
1253 FALSE), /* pcrel_offset */
1254
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64,
1259 0, /* rightshift */
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1261 64, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_dont, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 ONES (64), /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16,
1274 0, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 16, /* bitsize */
1277 FALSE, /* pc_relative */
1278 0, /* bitpos */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO,
1289 0, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1291 16, /* bitsize */
1292 FALSE, /* pc_relative */
1293 0, /* bitpos */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc, /* special_function */
1296 "R_PPC64_DTPREL16_LO", /* name */
1297 FALSE, /* partial_inplace */
1298 0, /* src_mask */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1301
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 16, /* bitsize */
1307 FALSE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL16_HI", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA,
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 16, /* bitsize */
1322 FALSE, /* pc_relative */
1323 0, /* bitpos */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16_HA", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1331
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHER", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1349 32, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHERA", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHEST", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE, /* partial_inplace */
1388 0, /* src_mask */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_DS,
1394 0, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS,
1409 0, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 16, /* bitsize */
1412 FALSE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xfffc, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1421
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64,
1425 0, /* rightshift */
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1427 64, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
1430 complain_overflow_dont, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE, /* partial_inplace */
1434 0, /* src_mask */
1435 ONES (64), /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16,
1440 0, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 16, /* bitsize */
1443 FALSE, /* pc_relative */
1444 0, /* bitpos */
1445 complain_overflow_signed, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE, /* partial_inplace */
1449 0, /* src_mask */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO,
1455 0, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 16, /* bitsize */
1458 FALSE, /* pc_relative */
1459 0, /* bitpos */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_TPREL16_LO", /* name */
1463 FALSE, /* partial_inplace */
1464 0, /* src_mask */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 16, /* bitsize */
1473 FALSE, /* pc_relative */
1474 0, /* bitpos */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL16_HI", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA,
1485 16, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 16, /* bitsize */
1488 FALSE, /* pc_relative */
1489 0, /* bitpos */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16_HA", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 16, /* bitsize */
1503 FALSE, /* pc_relative */
1504 0, /* bitpos */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_HIGHER", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA,
1515 32, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 16, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HIGHERA", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1532 16, /* bitsize */
1533 FALSE, /* pc_relative */
1534 0, /* bitpos */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HIGHEST", /* name */
1538 FALSE, /* partial_inplace */
1539 0, /* src_mask */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1542
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE, /* partial_inplace */
1554 0, /* src_mask */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_DS,
1560 0, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1562 16, /* bitsize */
1563 FALSE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_signed, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE, /* partial_inplace */
1569 0, /* src_mask */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS,
1575 0, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1577 16, /* bitsize */
1578 FALSE, /* pc_relative */
1579 0, /* bitpos */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE, /* partial_inplace */
1584 0, /* src_mask */
1585 0xfffc, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1587
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16,
1592 0, /* rightshift */
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 16, /* bitsize */
1595 FALSE, /* pc_relative */
1596 0, /* bitpos */
1597 complain_overflow_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1600 FALSE, /* partial_inplace */
5bd4f169
AM		 1601 0, /* src_mask */
1602 0xffff, /* dst_mask */
b34976b6 1603 FALSE), /* pcrel_offset */
5bd4f169 1604
411e1bfb
AM		 1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1607 0, /* rightshift */
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 16, /* bitsize */
b34976b6 1610 FALSE, /* pc_relative */
5bd4f169
AM		 1611 0, /* bitpos */
1612 complain_overflow_dont, /* complain_on_overflow */
805fc799 1613 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1614 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1615 FALSE, /* partial_inplace */
5bd4f169
AM		 1616 0, /* src_mask */
1617 0xffff, /* dst_mask */
b34976b6 1618 FALSE), /* pcrel_offset */
5bd4f169 1619
411e1bfb
AM		 1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 16, /* bitsize */
b34976b6 1625 FALSE, /* pc_relative */
5bd4f169
AM		 1626 0, /* bitpos */
1627 complain_overflow_dont, /* complain_on_overflow */
805fc799 1628 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1629 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1630 FALSE, /* partial_inplace */
5bd4f169
AM		 1631 0, /* src_mask */
1632 0xffff, /* dst_mask */
b34976b6 1633 FALSE), /* pcrel_offset */
5bd4f169 1634
411e1bfb
AM		 1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 16, /* bitsize */
b34976b6 1640 FALSE, /* pc_relative */
5bd4f169 1641 0, /* bitpos */
411e1bfb 1642 complain_overflow_dont, /* complain_on_overflow */
805fc799 1643 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1645 FALSE, /* partial_inplace */
5bd4f169
AM		 1646 0, /* src_mask */
1647 0xffff, /* dst_mask */
b34976b6 1648 FALSE), /* pcrel_offset */
5bd4f169 1649
411e1bfb
AM		 1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1654 0, /* rightshift */
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1656 16, /* bitsize */
b34976b6 1657 FALSE, /* pc_relative */
5bd4f169 1658 0, /* bitpos */
411e1bfb
AM		 1659 complain_overflow_signed, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1662 FALSE, /* partial_inplace */
d006db6c 1663 0, /* src_mask */
411e1bfb 1664 0xffff, /* dst_mask */
b34976b6 1665 FALSE), /* pcrel_offset */
5bd4f169 1666
411e1bfb
AM		 1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1669 0, /* rightshift */
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1671 16, /* bitsize */
b34976b6 1672 FALSE, /* pc_relative */
5bd4f169 1673 0, /* bitpos */
411e1bfb
AM		 1674 complain_overflow_dont, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1677 FALSE, /* partial_inplace */
d006db6c 1678 0, /* src_mask */
411e1bfb 1679 0xffff, /* dst_mask */
b34976b6 1680 FALSE), /* pcrel_offset */
5bd4f169 1681
411e1bfb
AM		 1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1684 16, /* rightshift */
5bd4f169
AM		 1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1686 16, /* bitsize */
b34976b6 1687 FALSE, /* pc_relative */
5bd4f169 1688 0, /* bitpos */
411e1bfb 1689 complain_overflow_dont, /* complain_on_overflow */
805fc799 1690 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1691 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1692 FALSE, /* partial_inplace */
d006db6c 1693 0, /* src_mask */
411e1bfb 1694 0xffff, /* dst_mask */
b34976b6 1695 FALSE), /* pcrel_offset */
5bd4f169 1696
411e1bfb
AM		 1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1699 16, /* rightshift */
5bd4f169
AM		 1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 16, /* bitsize */
b34976b6 1702 FALSE, /* pc_relative */
5bd4f169
AM		 1703 0, /* bitpos */
1704 complain_overflow_dont, /* complain_on_overflow */
805fc799 1705 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1707 FALSE, /* partial_inplace */
d006db6c 1708 0, /* src_mask */
411e1bfb 1709 0xffff, /* dst_mask */
b34976b6 1710 FALSE), /* pcrel_offset */
5bd4f169 1711
411e1bfb
AM		 1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1715 0, /* rightshift */
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 16, /* bitsize */
b34976b6 1718 FALSE, /* pc_relative */
5bd4f169 1719 0, /* bitpos */
411e1bfb 1720 complain_overflow_signed, /* complain_on_overflow */
805fc799 1721 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1723 FALSE, /* partial_inplace */
d006db6c 1724 0, /* src_mask */
5bd4f169 1725 0xfffc, /* dst_mask */
b34976b6 1726 FALSE), /* pcrel_offset */
5bd4f169 1727
411e1bfb
AM		 1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1730 0, /* rightshift */
c061c2d8
AM		 1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 16, /* bitsize */
b34976b6 1733 FALSE, /* pc_relative */
5bd4f169 1734 0, /* bitpos */
411e1bfb
AM		 1735 complain_overflow_dont, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1738 FALSE, /* partial_inplace */
d006db6c 1739 0, /* src_mask */
c061c2d8 1740 0xfffc, /* dst_mask */
b34976b6 1741 FALSE), /* pcrel_offset */
5bd4f169 1742
411e1bfb
AM		 1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1745 16, /* rightshift */
5bd4f169
AM		 1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 16, /* bitsize */
b34976b6 1748 FALSE, /* pc_relative */
5bd4f169
AM		 1749 0, /* bitpos */
1750 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1751 ppc64_elf_unhandled_reloc, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1753 FALSE, /* partial_inplace */
d006db6c 1754 0, /* src_mask */
411e1bfb 1755 0xffff, /* dst_mask */
b34976b6 1756 FALSE), /* pcrel_offset */
5bd4f169 1757
411e1bfb
AM		 1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 16, /* bitsize */
1763 FALSE, /* pc_relative */
1764 0, /* bitpos */
1765 complain_overflow_dont, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE, /* partial_inplace */
1769 0, /* src_mask */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1772
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1776 0, /* rightshift */
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 16, /* bitsize */
b34976b6 1779 FALSE, /* pc_relative */
5bd4f169
AM		 1780 0, /* bitpos */
1781 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1784 FALSE, /* partial_inplace */
d006db6c 1785 0, /* src_mask */
ad8e1ba5 1786 0xfffc, /* dst_mask */
b34976b6 1787 FALSE), /* pcrel_offset */
5bd4f169 1788
411e1bfb
AM		 1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1791 0, /* rightshift */
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 16, /* bitsize */
b34976b6 1794 FALSE, /* pc_relative */
5bd4f169
AM		 1795 0, /* bitpos */
1796 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1799 FALSE, /* partial_inplace */
d006db6c 1800 0, /* src_mask */
ad8e1ba5 1801 0xfffc, /* dst_mask */
b34976b6 1802 FALSE), /* pcrel_offset */
5bd4f169 1803
411e1bfb
AM		 1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI,
1806 16, /* rightshift */
5bd4f169
AM		 1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 16, /* bitsize */
b34976b6 1809 FALSE, /* pc_relative */
5bd4f169 1810 0, /* bitpos */
411e1bfb 1811 complain_overflow_dont, /* complain_on_overflow */
805fc799 1812 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1813 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1814 FALSE, /* partial_inplace */
d006db6c 1815 0, /* src_mask */
411e1bfb 1816 0xffff, /* dst_mask */
b34976b6 1817 FALSE), /* pcrel_offset */
5bd4f169 1818
411e1bfb
AM		 1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA,
1821 16, /* rightshift */
5bd4f169
AM		 1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 16, /* bitsize */
b34976b6 1824 FALSE, /* pc_relative */
5bd4f169
AM		 1825 0, /* bitpos */
1826 complain_overflow_dont, /* complain_on_overflow */
805fc799 1827 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1828 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1829 FALSE, /* partial_inplace */
d006db6c 1830 0, /* src_mask */
411e1bfb 1831 0xffff, /* dst_mask */
b34976b6 1832 FALSE), /* pcrel_offset */
5bd4f169
AM		 1833
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1836 0, /* rightshift */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1838 0, /* bitsize */
b34976b6 1839 FALSE, /* pc_relative */
5bd4f169
AM		 1840 0, /* bitpos */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 NULL, /* special_function */
1843 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1844 FALSE, /* partial_inplace */
5bd4f169
AM		 1845 0, /* src_mask */
1846 0, /* dst_mask */
b34976b6 1847 FALSE), /* pcrel_offset */
5bd4f169
AM		 1848
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1851 0, /* rightshift */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1853 0, /* bitsize */
b34976b6 1854 FALSE, /* pc_relative */
5bd4f169
AM		 1855 0, /* bitpos */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 NULL, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1859 FALSE, /* partial_inplace */
5bd4f169
AM		 1860 0, /* src_mask */
1861 0, /* dst_mask */
b34976b6 1862 FALSE), /* pcrel_offset */
5bd4f169
AM		 1863};
1864
1865\f
1866/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1867 be done. */
1868
1869static void
4ce794b7 1870ppc_howto_init (void)
5bd4f169
AM		 1871{
1872 unsigned int i, type;
1873
1874 for (i = 0;
1875 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1876 i++)
1877 {
1878 type = ppc64_elf_howto_raw[i].type;
1879 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1880 / sizeof (ppc64_elf_howto_table[0])));
1881 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1882 }
1883}
1884
1885static reloc_howto_type *
4ce794b7
AM		 1886ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1887 bfd_reloc_code_real_type code)
5bd4f169 1888{
411e1bfb 1889 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1890
1891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1892 /* Initialize howto table if needed. */
1893 ppc_howto_init ();
1894
4ce794b7 1895 switch (code)
5bd4f169
AM		 1896 {
1897 default:
4ce794b7 1898 return NULL;
5bd4f169 1899
411e1bfb
AM		 1900 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1901 break;
1902 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1903 break;
1904 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1905 break;
1906 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1907 break;
1908 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1909 break;
1910 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1911 break;
1912 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1913 break;
411e1bfb 1914 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1915 break;
411e1bfb 1916 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1917 break;
411e1bfb 1918 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1919 break;
411e1bfb 1920 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1921 break;
411e1bfb 1922 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1923 break;
411e1bfb 1924 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1925 break;
411e1bfb 1926 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2031 break;
411e1bfb
AM		 2032 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2033 break;
2034 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2035 break;
2036 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2037 break;
2038 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2039 break;
2040 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2041 break;
2042 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2043 break;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2045 break;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2047 break;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2049 break;
2050 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2051 break;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2053 break;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2065 break;
2066 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2067 break;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2069 break;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2071 break;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2073 break;
2074 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2075 break;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2077 break;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2079 break;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2081 break;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2083 break;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2085 break;
2086 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2087 break;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2089 break;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2091 break;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2093 break;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2095 break;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2097 break;
2098 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2099 break;
2100 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2101 break;
2102 }
2103
4ce794b7 2104 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2105};
2106
2107/* Set the howto pointer for a PowerPC ELF reloc. */
2108
2109static void
4ce794b7
AM		 2110ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2111 Elf_Internal_Rela *dst)
5bd4f169 2112{
65f38f15
AM		 2113 unsigned int type;
2114
ef60b7ff 2115 /* Initialize howto table if needed. */
5bd4f169 2116 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2117 ppc_howto_init ();
2118
65f38f15
AM		 2119 type = ELF64_R_TYPE (dst->r_info);
2120 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])));
2122 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2123}
2124
04c9666a 2125/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2126
2127static bfd_reloc_status_type
4ce794b7
AM		 2128ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2129 void *data, asection *input_section,
2130 bfd *output_bfd, char **error_message)
5bd4f169 2131{
805fc799
AM		 2132 /* If this is a relocatable link (output_bfd test tells us), just
2133 call the generic function. Any adjustment will be done at final
2134 link time. */
2135 if (output_bfd != NULL)
cedb70c5 2136 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2137 input_section, output_bfd, error_message);
2138
2139 /* Adjust the addend for sign extension of the low 16 bits.
2140 We won't actually be using the low 16 bits, so trashing them
2141 doesn't matter. */
2142 reloc_entry->addend += 0x8000;
2143 return bfd_reloc_continue;
2144}
5bd4f169 2145
2441e016
AM		 2146static bfd_reloc_status_type
2147ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2148 void *data, asection *input_section,
2149 bfd *output_bfd, char **error_message)
2150{
2151 if (output_bfd != NULL)
2152 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2153 input_section, output_bfd, error_message);
2154
699733f6
AM		 2155 if (strcmp (symbol->section->name, ".opd") == 0
2156 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2157 {
2158 bfd_vma dest = opd_entry_value (symbol->section,
2159 symbol->value + reloc_entry->addend,
2160 NULL, NULL);
2161 if (dest != (bfd_vma) -1)
2162 reloc_entry->addend = dest - (symbol->value
2163 + symbol->section->output_section->vma
2164 + symbol->section->output_offset);
2165 }
2166 return bfd_reloc_continue;
2167}
2168
805fc799 2169static bfd_reloc_status_type
4ce794b7
AM		 2170ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2171 void *data, asection *input_section,
2172 bfd *output_bfd, char **error_message)
805fc799
AM		 2173{
2174 long insn;
04c9666a 2175 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2176 bfd_size_type octets;
2177 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2178 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2179
2180 /* If this is a relocatable link (output_bfd test tells us), just
2181 call the generic function. Any adjustment will be done at final
2182 link time. */
5bd4f169 2183 if (output_bfd != NULL)
cedb70c5 2184 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2185 input_section, output_bfd, error_message);
2186
2187 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2188 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2189 insn &= ~(0x01 << 21);
4ce794b7 2190 r_type = reloc_entry->howto->type;
805fc799
AM		 2191 if (r_type == R_PPC64_ADDR14_BRTAKEN
2192 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2193 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2194
2195 if (is_power4)
5bd4f169 2196 {
805fc799
AM		 2197 /* Set 'a' bit. This is 0b00010 in BO field for branch
2198 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2199 for branch on CTR insns (BO == 1a00t or 1a01t). */
2200 if ((insn & (0x14 << 21)) == (0x04 << 21))
2201 insn |= 0x02 << 21;
2202 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2203 insn |= 0x08 << 21;
2204 else
2441e016 2205 goto out;
5bd4f169 2206 }
805fc799
AM		 2207 else
2208 {
2209 bfd_vma target = 0;
2210 bfd_vma from;
5bd4f169 2211
805fc799
AM		 2212 if (!bfd_is_com_section (symbol->section))
2213 target = symbol->value;
2214 target += symbol->section->output_section->vma;
2215 target += symbol->section->output_offset;
2216 target += reloc_entry->addend;
5bd4f169 2217
805fc799
AM		 2218 from = (reloc_entry->address
2219 + input_section->output_offset
2220 + input_section->output_section->vma);
5bd4f169 2221
805fc799
AM		 2222 /* Invert 'y' bit if not the default. */
2223 if ((bfd_signed_vma) (target - from) < 0)
2224 insn ^= 0x01 << 21;
2225 }
4ce794b7 2226 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2227 out:
2228 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2229 input_section, output_bfd, error_message);
805fc799 2230}
5bd4f169 2231
805fc799 2232static bfd_reloc_status_type
4ce794b7
AM		 2233ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2234 void *data, asection *input_section,
2235 bfd *output_bfd, char **error_message)
805fc799
AM		 2236{
2237 /* If this is a relocatable link (output_bfd test tells us), just
2238 call the generic function. Any adjustment will be done at final
2239 link time. */
2240 if (output_bfd != NULL)
cedb70c5 2241 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2242 input_section, output_bfd, error_message);
5bd4f169 2243
805fc799
AM		 2244 /* Subtract the symbol section base address. */
2245 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2246 return bfd_reloc_continue;
2247}
2248
805fc799 2249static bfd_reloc_status_type
4ce794b7
AM		 2250ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2251 void *data, asection *input_section,
2252 bfd *output_bfd, char **error_message)
805fc799
AM		 2253{
2254 /* If this is a relocatable link (output_bfd test tells us), just
2255 call the generic function. Any adjustment will be done at final
2256 link time. */
2257 if (output_bfd != NULL)
cedb70c5 2258 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2259 input_section, output_bfd, error_message);
2260
2261 /* Subtract the symbol section base address. */
2262 reloc_entry->addend -= symbol->section->output_section->vma;
2263
2264 /* Adjust the addend for sign extension of the low 16 bits. */
2265 reloc_entry->addend += 0x8000;
2266 return bfd_reloc_continue;
2267}
2268
2269static bfd_reloc_status_type
4ce794b7
AM		 2270ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2271 void *data, asection *input_section,
2272 bfd *output_bfd, char **error_message)
805fc799
AM		 2273{
2274 bfd_vma TOCstart;
2275
2276 /* If this is a relocatable link (output_bfd test tells us), just
2277 call the generic function. Any adjustment will be done at final
2278 link time. */
2279 if (output_bfd != NULL)
cedb70c5 2280 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2281 input_section, output_bfd, error_message);
2282
2283 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2284 if (TOCstart == 0)
2285 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2286
2287 /* Subtract the TOC base address. */
2288 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2289 return bfd_reloc_continue;
2290}
2291
2292static bfd_reloc_status_type
4ce794b7
AM		 2293ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
805fc799
AM		 2296{
2297 bfd_vma TOCstart;
2298
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2301 link time. */
2302 if (output_bfd != NULL)
cedb70c5 2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2304 input_section, output_bfd, error_message);
2305
2306 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2307 if (TOCstart == 0)
2308 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2309
2310 /* Subtract the TOC base address. */
2311 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2312
2313 /* Adjust the addend for sign extension of the low 16 bits. */
2314 reloc_entry->addend += 0x8000;
2315 return bfd_reloc_continue;
2316}
2317
2318static bfd_reloc_status_type
4ce794b7
AM		 2319ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2320 void *data, asection *input_section,
2321 bfd *output_bfd, char **error_message)
805fc799
AM		 2322{
2323 bfd_vma TOCstart;
2324 bfd_size_type octets;
2325
2326 /* If this is a relocatable link (output_bfd test tells us), just
2327 call the generic function. Any adjustment will be done at final
2328 link time. */
2329 if (output_bfd != NULL)
cedb70c5 2330 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2331 input_section, output_bfd, error_message);
2332
2333 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2334 if (TOCstart == 0)
2335 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2336
2337 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2338 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2339 return bfd_reloc_ok;
2340}
2341
2342static bfd_reloc_status_type
4ce794b7
AM		 2343ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2344 void *data, asection *input_section,
2345 bfd *output_bfd, char **error_message)
805fc799
AM		 2346{
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2349 link time. */
2350 if (output_bfd != NULL)
cedb70c5 2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2352 input_section, output_bfd, error_message);
2353
2354 if (error_message != NULL)
2355 {
2356 static char buf[60];
2357 sprintf (buf, "generic linker can't handle %s",
2358 reloc_entry->howto->name);
2359 *error_message = buf;
2360 }
2361 return bfd_reloc_dangerous;
2362}
2363
e717da7e
AM		 2364struct ppc64_elf_obj_tdata
2365{
2366 struct elf_obj_tdata elf;
2367
2368 /* Shortcuts to dynamic linker sections. */
2369 asection *got;
2370 asection *relgot;
2371
81688140
AM		 2372 /* Used during garbage collection. We attach global symbols defined
2373 on removed .opd entries to this section so that the sym is removed. */
2374 asection *deleted_section;
2375
e717da7e
AM		 2376 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2377 sections means we potentially need one of these for each input bfd. */
2378 union {
2379 bfd_signed_vma refcount;
2380 bfd_vma offset;
2381 } tlsld_got;
8860955f
AM		 2382
2383 /* A copy of relocs before they are modified for --emit-relocs. */
2384 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2385};
2386
2387#define ppc64_elf_tdata(bfd) \
2388 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2389
2390#define ppc64_tlsld_got(bfd) \
2391 (&ppc64_elf_tdata (bfd)->tlsld_got)
2392
2393/* Override the generic function because we store some extras. */
2394
2395static bfd_boolean
2396ppc64_elf_mkobject (bfd *abfd)
2397{
2398 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2399 abfd->tdata.any = bfd_zalloc (abfd, amt);
2400 if (abfd->tdata.any == NULL)
2401 return FALSE;
2402 return TRUE;
2403}
2404
ee75fd95
AM		 2405/* Return 1 if target is one of ours. */
2406
7b53ace3 2407static bfd_boolean
ee75fd95 2408is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2409{
2410 extern const bfd_target bfd_elf64_powerpc_vec;
2411 extern const bfd_target bfd_elf64_powerpcle_vec;
2412
2413 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2414}
2415
feee612b
AM		 2416/* Fix bad default arch selected for a 64 bit input bfd when the
2417 default is 32 bit. */
2418
b34976b6 2419static bfd_boolean
4ce794b7 2420ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2421{
2422 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2423 {
2424 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2425
2426 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2427 {
2428 /* Relies on arch after 32 bit default being 64 bit default. */
2429 abfd->arch_info = abfd->arch_info->next;
2430 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2431 }
2432 }
b34976b6 2433 return TRUE;
feee612b
AM		 2434}
2435
d37c89e5
AM		 2436/* Support for core dump NOTE sections. */
2437
2438static bfd_boolean
2439ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2440{
eea6121a 2441 size_t offset, size;
d37c89e5
AM		 2442
2443 if (note->descsz != 504)
2444 return FALSE;
2445
2446 /* pr_cursig */
2447 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2448
2449 /* pr_pid */
2450 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2451
2452 /* pr_reg */
2453 offset = 112;
eea6121a 2454 size = 384;
d37c89e5
AM		 2455
2456 /* Make a ".reg/999" section. */
2457 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2458 size, note->descpos + offset);
d37c89e5
AM		 2459}
2460
2461static bfd_boolean
2462ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2463{
2464 if (note->descsz != 136)
2465 return FALSE;
2466
2467 elf_tdata (abfd)->core_program
2468 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2469 elf_tdata (abfd)->core_command
2470 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2471
2472 return TRUE;
2473}
2474
5bd4f169
AM		 2475/* Merge backend specific data from an object file to the output
2476 object file when linking. */
2f6d9989 2477
b34976b6 2478static bfd_boolean
4ce794b7 2479ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2480{
5bd4f169
AM		 2481 /* Check if we have the same endianess. */
2482 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2483 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2484 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2485 {
2486 const char *msg;
2487
2488 if (bfd_big_endian (ibfd))
d003868e 2489 msg = _("%B: compiled for a big endian system "
4ce794b7 2490 "and target is little endian");
5bd4f169 2491 else
d003868e 2492 msg = _("%B: compiled for a little endian system "
4ce794b7 2493 "and target is big endian");
5bd4f169 2494
d003868e 2495 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2496
2497 bfd_set_error (bfd_error_wrong_format);
b34976b6 2498 return FALSE;
5bd4f169
AM		 2499 }
2500
b34976b6 2501 return TRUE;
5bd4f169 2502}
f0abc2a1 2503
5d35169e
AM		 2504/* Add extra PPC sections. */
2505
2506static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2507{
7dcb9820
AM		 2508 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2509 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".plt", 4, 0, SHT_NOBITS, 0 },
2511 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2512 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2513 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2514 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2515};
2516
f0abc2a1
AM		 2517struct _ppc64_elf_section_data
2518{
2519 struct bfd_elf_section_data elf;
411e1bfb
AM		 2520
2521 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2522 union
2523 {
411e1bfb 2524 /* Points to the function code section for local opd entries. */
f0abc2a1 2525 asection **func_sec;
411e1bfb 2526 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2527 long *adjust;
2528 } opd;
411e1bfb
AM		 2529
2530 /* An array for toc sections, indexed by offset/8.
2531 Specifies the relocation symbol index used at a given toc offset. */
2532 unsigned *t_symndx;
f0abc2a1
AM		 2533};
2534
2535#define ppc64_elf_section_data(sec) \
411e1bfb 2536 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2537
2538static bfd_boolean
4ce794b7 2539ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2540{
2541 struct _ppc64_elf_section_data *sdata;
2542 bfd_size_type amt = sizeof (*sdata);
2543
4ce794b7 2544 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2545 if (sdata == NULL)
2546 return FALSE;
4ce794b7 2547 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2548
2549 return _bfd_elf_new_section_hook (abfd, sec);
2550}
4025353c
AM		 2551
2552static void *
2553get_opd_info (asection * sec)
2554{
2555 if (sec != NULL
2556 && ppc64_elf_section_data (sec) != NULL
2557 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2558 return ppc64_elf_section_data (sec)->opd.adjust;
2559 return NULL;
2560}
90e3cdf2
JJ		 2561\f
2562/* Parameters for the qsort hook. */
2563static asection *synthetic_opd;
2564static bfd_boolean synthetic_relocatable;
2565
699733f6 2566/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2567
2568static int
2569compare_symbols (const void *ap, const void *bp)
2570{
2571 const asymbol *a = * (const asymbol **) ap;
2572 const asymbol *b = * (const asymbol **) bp;
2573
699733f6
AM		 2574 /* Section symbols first. */
2575 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2576 return -1;
699733f6 2577 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2578 return 1;
2579
699733f6 2580 /* then .opd symbols. */
90e3cdf2
JJ		 2581 if (a->section == synthetic_opd && b->section != synthetic_opd)
2582 return -1;
2583 if (a->section != synthetic_opd && b->section == synthetic_opd)
2584 return 1;
2585
699733f6 2586 /* then other code symbols. */
90e3cdf2
JJ		 2587 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2588 == (SEC_CODE | SEC_ALLOC)
2589 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2590 != (SEC_CODE | SEC_ALLOC))
2591 return -1;
2592
2593 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2594 != (SEC_CODE | SEC_ALLOC)
2595 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2596 == (SEC_CODE | SEC_ALLOC))
2597 return 1;
2598
2599 if (synthetic_relocatable)
2600 {
2601 if (a->section->id < b->section->id)
2602 return -1;
2603
2604 if (a->section->id > b->section->id)
2605 return 1;
2606 }
2607
2608 if (a->value + a->section->vma < b->value + b->section->vma)
2609 return -1;
2610
2611 if (a->value + a->section->vma > b->value + b->section->vma)
2612 return 1;
2613
2614 return 0;
2615}
2616
699733f6 2617/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2618
699733f6
AM		 2619static asymbol *
2620sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2621{
699733f6 2622 long mid;
90e3cdf2 2623
699733f6
AM		 2624 if (id == -1)
2625 {
2626 while (lo < hi)
2627 {
2628 mid = (lo + hi) >> 1;
2629 if (syms[mid]->value + syms[mid]->section->vma < value)
2630 lo = mid + 1;
2631 else if (syms[mid]->value + syms[mid]->section->vma > value)
2632 hi = mid;
2633 else
2634 return syms[mid];
2635 }
2636 }
2637 else
2638 {
2639 while (lo < hi)
2640 {
2641 mid = (lo + hi) >> 1;
2642 if (syms[mid]->section->id < id)
2643 lo = mid + 1;
2644 else if (syms[mid]->section->id > id)
2645 hi = mid;
2646 else if (syms[mid]->value < value)
2647 lo = mid + 1;
2648 else if (syms[mid]->value > value)
2649 hi = mid;
2650 else
2651 return syms[mid];
2652 }
2653 }
2654 return NULL;
90e3cdf2
JJ		 2655}
2656
699733f6
AM		 2657/* Create synthetic symbols, effectively restoring "dot-symbol" function
2658 entry syms. */
90e3cdf2
JJ		 2659
2660static long
a7535cf3
AM		 2661ppc64_elf_get_synthetic_symtab (bfd *abfd,
2662 long static_count, asymbol **static_syms,
2663 long dyn_count, asymbol **dyn_syms,
c9727e01 2664 asymbol **ret)
90e3cdf2
JJ		 2665{
2666 asymbol *s;
699733f6
AM		 2667 long i;
2668 long count;
90e3cdf2 2669 char *names;
a7535cf3 2670 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2671 asection *opd;
90e3cdf2 2672 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2673 asymbol **syms;
90e3cdf2
JJ		 2674
2675 *ret = NULL;
2676
2677 opd = bfd_get_section_by_name (abfd, ".opd");
2678 if (opd == NULL)
2679 return 0;
2680
a7535cf3 2681 symcount = static_count;
c9727e01 2682 if (!relocatable)
a7535cf3 2683 symcount += dyn_count;
90e3cdf2 2684 if (symcount == 0)
c9727e01 2685 return 0;
90e3cdf2 2686
a7535cf3
AM		 2687 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2688 if (syms == NULL)
7356fed5 2689 return -1;
a7535cf3
AM		 2690
2691 if (!relocatable && static_count != 0 && dyn_count != 0)
2692 {
2693 /* Use both symbol tables. */
2694 memcpy (syms, static_syms, static_count * sizeof (*syms));
2695 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2696 }
2697 else if (!relocatable && static_count == 0)
2698 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2699 else
2700 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2701
90e3cdf2
JJ		 2702 synthetic_opd = opd;
2703 synthetic_relocatable = relocatable;
595da8c5 2704 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2705
c9727e01
AM		 2706 if (!relocatable && symcount > 1)
2707 {
2708 long j;
2709 /* Trim duplicate syms, since we may have merged the normal and
2710 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2711 different values, so trim any with the same value. */
c9727e01
AM		 2712 for (i = 1, j = 1; i < symcount; ++i)
2713 if (syms[i - 1]->value + syms[i - 1]->section->vma
2714 != syms[i]->value + syms[i]->section->vma)
2715 syms[j++] = syms[i];
2716 symcount = j;
2717 }
2718
699733f6
AM		 2719 i = 0;
2720 if (syms[i]->section == opd)
2721 ++i;
2722 codesecsym = i;
90e3cdf2 2723
699733f6
AM		 2724 for (; i < symcount; ++i)
2725 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2726 != (SEC_CODE | SEC_ALLOC))
2727 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2728 break;
2729 codesecsymend = i;
90e3cdf2 2730
699733f6
AM		 2731 for (; i < symcount; ++i)
2732 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2733 break;
2734 secsymend = i;
90e3cdf2 2735
699733f6
AM		 2736 for (; i < symcount; ++i)
2737 if (syms[i]->section != opd)
2738 break;
2739 opdsymend = i;
90e3cdf2 2740
699733f6
AM		 2741 for (; i < symcount; ++i)
2742 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2743 != (SEC_CODE | SEC_ALLOC))
2744 break;
2745 symcount = i;
2746
c9727e01 2747 count = 0;
699733f6 2748 if (opdsymend == secsymend)
c9727e01 2749 goto done;
90e3cdf2 2750
699733f6 2751 if (relocatable)
90e3cdf2 2752 {
699733f6
AM		 2753 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2754 arelent *r;
2755 size_t size;
2756 long relcount;
90e3cdf2 2757
699733f6 2758 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2759 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2760 if (relcount == 0)
c9727e01 2761 goto done;
90e3cdf2 2762
7356fed5
AM		 2763 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2764 {
2765 count = -1;
2766 goto done;
2767 }
2768
699733f6 2769 size = 0;
595da8c5 2770 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2771 {
2772 asymbol *sym;
90e3cdf2 2773
595da8c5 2774 while (r < opd->relocation + relcount
699733f6
AM		 2775 && r->address < syms[i]->value + opd->vma)
2776 ++r;
90e3cdf2 2777
595da8c5 2778 if (r == opd->relocation + relcount)
699733f6 2779 break;
90e3cdf2 2780
699733f6
AM		 2781 if (r->address != syms[i]->value + opd->vma)
2782 continue;
90e3cdf2 2783
699733f6
AM		 2784 if (r->howto->type != R_PPC64_ADDR64)
2785 continue;
90e3cdf2 2786
699733f6
AM		 2787 sym = *r->sym_ptr_ptr;
2788 if (!sym_exists_at (syms, opdsymend, symcount,
2789 sym->section->id, sym->value + r->addend))
2790 {
2791 ++count;
2792 size += sizeof (asymbol);
2793 size += strlen (syms[i]->name) + 2;
2794 }
2795 }
90e3cdf2 2796
699733f6
AM		 2797 s = *ret = bfd_malloc (size);
2798 if (s == NULL)
2799 {
7356fed5 2800 count = -1;
c9727e01 2801 goto done;
699733f6 2802 }
90e3cdf2 2803
699733f6 2804 names = (char *) (s + count);
90e3cdf2 2805
595da8c5 2806 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2807 {
699733f6 2808 asymbol *sym;
90e3cdf2 2809
595da8c5 2810 while (r < opd->relocation + relcount
699733f6
AM		 2811 && r->address < syms[i]->value + opd->vma)
2812 ++r;
90e3cdf2 2813
595da8c5 2814 if (r == opd->relocation + relcount)
699733f6
AM		 2815 break;
2816
2817 if (r->address != syms[i]->value + opd->vma)
2818 continue;
2819
2820 if (r->howto->type != R_PPC64_ADDR64)
2821 continue;
90e3cdf2 2822
699733f6
AM		 2823 sym = *r->sym_ptr_ptr;
2824 if (!sym_exists_at (syms, opdsymend, symcount,
2825 sym->section->id, sym->value + r->addend))
2826 {
2827 size_t len;
2828
2829 *s = *syms[i];
2830 s->section = sym->section;
2831 s->value = sym->value + r->addend;
2832 s->name = names;
2833 *names++ = '.';
2834 len = strlen (syms[i]->name);
2835 memcpy (names, syms[i]->name, len + 1);
2836 names += len + 1;
2837 s++;
2838 }
2839 }
2840 }
2841 else
90e3cdf2 2842 {
699733f6
AM		 2843 bfd_byte *contents;
2844 size_t size;
90e3cdf2 2845
699733f6
AM		 2846 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2847 {
2848 if (contents)
c9727e01
AM		 2849 {
2850 free_contents_and_exit:
2851 free (contents);
2852 }
7356fed5 2853 count = -1;
c9727e01 2854 goto done;
699733f6 2855 }
90e3cdf2 2856
699733f6
AM		 2857 size = 0;
2858 for (i = secsymend; i < opdsymend; ++i)
2859 {
2860 bfd_vma ent;
90e3cdf2 2861
699733f6
AM		 2862 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2863 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2864 {
2865 ++count;
2866 size += sizeof (asymbol);
2867 size += strlen (syms[i]->name) + 2;
2868 }
2869 }
90e3cdf2 2870
699733f6
AM		 2871 s = *ret = bfd_malloc (size);
2872 if (s == NULL)
7356fed5 2873 goto free_contents_and_exit;
90e3cdf2 2874
699733f6 2875 names = (char *) (s + count);
90e3cdf2 2876
699733f6 2877 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2878 {
699733f6 2879 bfd_vma ent;
90e3cdf2 2880
699733f6
AM		 2881 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2882 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2883 {
c9727e01 2884 long lo, hi;
699733f6 2885 size_t len;
c9727e01 2886 asection *sec = abfd->sections;
90e3cdf2 2887
699733f6
AM		 2888 *s = *syms[i];
2889 lo = codesecsym;
2890 hi = codesecsymend;
2891 while (lo < hi)
2892 {
c9727e01 2893 long mid = (lo + hi) >> 1;
699733f6
AM		 2894 if (syms[mid]->section->vma < ent)
2895 lo = mid + 1;
2896 else if (syms[mid]->section->vma > ent)
2897 hi = mid;
2898 else
c9727e01
AM		 2899 {
2900 sec = syms[mid]->section;
2901 break;
2902 }
699733f6
AM		 2903 }
2904
c9727e01 2905 if (lo >= hi && lo > codesecsym)
699733f6 2906 sec = syms[lo - 1]->section;
699733f6
AM		 2907
2908 for (; sec != NULL; sec = sec->next)
2909 {
2910 if (sec->vma > ent)
2911 break;
2912 if ((sec->flags & SEC_ALLOC) == 0
2913 || (sec->flags & SEC_LOAD) == 0)
2914 break;
2915 if ((sec->flags & SEC_CODE) != 0)
2916 s->section = sec;
2917 }
2918 s->value = ent - s->section->vma;
2919 s->name = names;
2920 *names++ = '.';
2921 len = strlen (syms[i]->name);
2922 memcpy (names, syms[i]->name, len + 1);
2923 names += len + 1;
2924 s++;
90e3cdf2 2925 }
90e3cdf2 2926 }
699733f6 2927 free (contents);
90e3cdf2
JJ		 2928 }
2929
c9727e01 2930 done:
a7535cf3 2931 free (syms);
90e3cdf2
JJ		 2932 return count;
2933}
5bd4f169 2934\f
65f38f15
AM		 2935/* The following functions are specific to the ELF linker, while
2936 functions above are used generally. Those named ppc64_elf_* are
2937 called by the main ELF linker code. They appear in this file more
2938 or less in the order in which they are called. eg.
2939 ppc64_elf_check_relocs is called early in the link process,
2940 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2941 called.
2942
2943 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2944 functions have both a function code symbol and a function descriptor
2945 symbol. A call to foo in a relocatable object file looks like:
2946
2947 . .text
2948 . x:
2949 . bl .foo
2950 . nop
2951
2952 The function definition in another object file might be:
2953
2954 . .section .opd
2955 . foo: .quad .foo
2956 . .quad .TOC.@tocbase
2957 . .quad 0
2958 .
2959 . .text
2960 . .foo: blr
2961
2962 When the linker resolves the call during a static link, the branch
2963 unsurprisingly just goes to .foo and the .opd information is unused.
2964 If the function definition is in a shared library, things are a little
2965 different: The call goes via a plt call stub, the opd information gets
2966 copied to the plt, and the linker patches the nop.
2967
2968 . x:
2969 . bl .foo_stub
2970 . ld 2,40(1)
2971 .
2972 .
2973 . .foo_stub:
2974 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 2975 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 2976 . std 2,40(1) # this is the general idea
2977 . ld 11,0(12)
2978 . ld 2,8(12)
2979 . mtctr 11
2980 . ld 11,16(12)
2981 . bctr
2982 .
2983 . .section .plt
2984 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2985
2986 The "reloc ()" notation is supposed to indicate that the linker emits
2987 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2988 copying.
2989
2990 What are the difficulties here? Well, firstly, the relocations
2991 examined by the linker in check_relocs are against the function code
2992 sym .foo, while the dynamic relocation in the plt is emitted against
2993 the function descriptor symbol, foo. Somewhere along the line, we need
2994 to carefully copy dynamic link information from one symbol to the other.
2995 Secondly, the generic part of the elf linker will make .foo a dynamic
2996 symbol as is normal for most other backends. We need foo dynamic
2997 instead, at least for an application final link. However, when
2998 creating a shared library containing foo, we need to have both symbols
2999 dynamic so that references to .foo are satisfied during the early
3000 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3001 definition from some other object, eg. a static library.
3002
3003 Update: As of August 2004, we support a new convention. Function
3004 calls may use the function descriptor symbol, ie. "bl foo". This
3005 behaves exactly as "bl .foo". */
65f38f15
AM		 3006
3007/* The linker needs to keep track of the number of relocs that it
3008 decides to copy as dynamic relocs in check_relocs for each symbol.
3009 This is so that it can later discard them if they are found to be
3010 unnecessary. We store the information in a field extending the
3011 regular ELF linker hash table. */
3012
3013struct ppc_dyn_relocs
3014{
3015 struct ppc_dyn_relocs *next;
3016
3017 /* The input section of the reloc. */
3018 asection *sec;
3019
3020 /* Total number of relocs copied for the input section. */
3021 bfd_size_type count;
3022
3023 /* Number of pc-relative relocs copied for the input section. */
3024 bfd_size_type pc_count;
3025};
3026
411e1bfb
AM		 3027/* Track GOT entries needed for a given symbol. We might need more
3028 than one got entry per symbol. */
3029struct got_entry
3030{
3031 struct got_entry *next;
3032
e7b938ca 3033 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3034 bfd_vma addend;
3035
e717da7e
AM		 3036 /* Unlike other ELF targets, we use separate GOT entries for the same
3037 symbol referenced from different input files. This is to support
3038 automatic multiple TOC/GOT sections, where the TOC base can vary
3039 from one input file to another.
3040
3041 Point to the BFD owning this GOT entry. */
3042 bfd *owner;
3043
3044 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3045 TLS_TPREL or TLS_DTPREL for tls entries. */
3046 char tls_type;
3047
e7b938ca 3048 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3049 union
3050 {
3051 bfd_signed_vma refcount;
3052 bfd_vma offset;
3053 } got;
411e1bfb
AM		 3054};
3055
3056/* The same for PLT. */
3057struct plt_entry
3058{
3059 struct plt_entry *next;
3060
3061 bfd_vma addend;
3062
3063 union
3064 {
3065 bfd_signed_vma refcount;
3066 bfd_vma offset;
3067 } plt;
3068};
3069
65f38f15 3070/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3071 selects those that must be copied when linking a shared library,
3072 even when the symbol is local. */
65f38f15 3073
411e1bfb 3074#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3075 ((RTYPE) != R_PPC64_REL32 \
3076 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3077 && (RTYPE) != R_PPC64_REL30)
65f38f15 3078
f4656909
AM		 3079/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3080 copying dynamic variables from a shared lib into an app's dynbss
3081 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3082 shared lib. With code that gcc generates, it's vital that this be
3083 enabled; In the PowerPC64 ABI, the address of a function is actually
3084 the address of a function descriptor, which resides in the .opd
3085 section. gcc uses the descriptor directly rather than going via the
3086 GOT as some other ABI's do, which means that initialized function
3087 pointers must reference the descriptor. Thus, a function pointer
3088 initialized to the address of a function in a shared library will
3089 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3090 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3091 presents a problem as a plt entry for that function is also
3092 initialized from the function descriptor symbol and the copy reloc
3093 may not be initialized first. */
a23b6845 3094#define ELIMINATE_COPY_RELOCS 1
f4656909 3095
721956f4
AM		 3096/* Section name for stubs is the associated section name plus this
3097 string. */
3098#define STUB_SUFFIX ".stub"
3099
3100/* Linker stubs.
3101 ppc_stub_long_branch:
3102 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3103 destination, but a 24 bit branch in a stub section will reach.
3104 . b dest
3105
3106 ppc_stub_plt_branch:
3107 Similar to the above, but a 24 bit branch in the stub section won't
3108 reach its destination.
87e226ce
AM		 3109 . addis %r12,%r2,xxx@toc@ha
3110 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3111 . mtctr %r11
3112 . bctr
3113
3114 ppc_stub_plt_call:
2c66dc6c
AM		 3115 Used to call a function in a shared library. If it so happens that
3116 the plt entry referenced crosses a 64k boundary, then an extra
3117 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3118 xxx+16 as appropriate.
87e226ce 3119 . addis %r12,%r2,xxx@toc@ha
721956f4 3120 . std %r2,40(%r1)
87e226ce
AM		 3121 . ld %r11,xxx+0@toc@l(%r12)
3122 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3123 . mtctr %r11
87e226ce 3124 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3125 . bctr
ad8e1ba5
AM		 3126
3127 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3128 code to adjust the value and save r2 to support multiple toc sections.
3129 A ppc_stub_long_branch with an r2 offset looks like:
3130 . std %r2,40(%r1)
3131 . addis %r2,%r2,off@ha
3132 . addi %r2,%r2,off@l
3133 . b dest
3134
3135 A ppc_stub_plt_branch with an r2 offset looks like:
3136 . std %r2,40(%r1)
3137 . addis %r12,%r2,xxx@toc@ha
3138 . ld %r11,xxx@toc@l(%r12)
3139 . addis %r2,%r2,off@ha
3140 . addi %r2,%r2,off@l
3141 . mtctr %r11
3142 . bctr
721956f4
AM		 3143*/
3144
3145enum ppc_stub_type {
3146 ppc_stub_none,
3147 ppc_stub_long_branch,
ad8e1ba5 3148 ppc_stub_long_branch_r2off,
721956f4 3149 ppc_stub_plt_branch,
ad8e1ba5 3150 ppc_stub_plt_branch_r2off,
721956f4
AM		 3151 ppc_stub_plt_call
3152};
3153
3154struct ppc_stub_hash_entry {
3155
3156 /* Base hash table entry structure. */
3157 struct bfd_hash_entry root;
3158
ad8e1ba5
AM		 3159 enum ppc_stub_type stub_type;
3160
721956f4
AM		 3161 /* The stub section. */
3162 asection *stub_sec;
3163
3164 /* Offset within stub_sec of the beginning of this stub. */
3165 bfd_vma stub_offset;
3166
3167 /* Given the symbol's value and its section we can determine its final
3168 value when building the stubs (so the stub knows where to jump. */
3169 bfd_vma target_value;
3170 asection *target_section;
3171
721956f4
AM		 3172 /* The symbol table entry, if any, that this was derived from. */
3173 struct ppc_link_hash_entry *h;
3174
411e1bfb
AM		 3175 /* And the reloc addend that this was derived from. */
3176 bfd_vma addend;
3177
721956f4
AM		 3178 /* Where this stub is being called from, or, in the case of combined
3179 stub sections, the first input section in the group. */
3180 asection *id_sec;
3181};
3182
3183struct ppc_branch_hash_entry {
3184
3185 /* Base hash table entry structure. */
3186 struct bfd_hash_entry root;
3187
3188 /* Offset within .branch_lt. */
3189 unsigned int offset;
3190
3191 /* Generation marker. */
3192 unsigned int iter;
3193};
65f38f15
AM		 3194
3195struct ppc_link_hash_entry
3196{
3197 struct elf_link_hash_entry elf;
3198
721956f4
AM		 3199 /* A pointer to the most recently used stub hash entry against this
3200 symbol. */
3201 struct ppc_stub_hash_entry *stub_cache;
3202
65f38f15
AM		 3203 /* Track dynamic relocs copied for this symbol. */
3204 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3205
721956f4 3206 /* Link between function code and descriptor symbols. */
34814b9f 3207 struct ppc_link_hash_entry *oh;
721956f4 3208
e86ce104
AM		 3209 /* Flag function code and descriptor symbols. */
3210 unsigned int is_func:1;
3211 unsigned int is_func_descriptor:1;
908b32fc 3212 unsigned int fake:1;
411e1bfb 3213
c5614fa4
AM		 3214 /* Whether global opd/toc sym has been adjusted or not.
3215 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3216 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3217 unsigned int adjust_done:1;
3218
99877b66
AM		 3219 /* Set if we twiddled this symbol to weak at some stage. */
3220 unsigned int was_undefined:1;
3221
411e1bfb 3222 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3223 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3224 corresponding relocs are encountered during check_relocs.
3225 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3226 indicate the corresponding GOT entry type is not needed.
3227 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3228 a TPREL one. We use a separate flag rather than setting TPREL
3229 just for convenience in distinguishing the two cases. */
3230#define TLS_GD 1 /* GD reloc. */
3231#define TLS_LD 2 /* LD reloc. */
3232#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3233#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3234#define TLS_TLS 16 /* Any TLS reloc. */
3235#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3236#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3237 char tls_mask;
65f38f15
AM		 3238};
3239
3240/* ppc64 ELF linker hash table. */
3241
3242struct ppc_link_hash_table
3243{
3244 struct elf_link_hash_table elf;
3245
721956f4
AM		 3246 /* The stub hash table. */
3247 struct bfd_hash_table stub_hash_table;
3248
3249 /* Another hash table for plt_branch stubs. */
3250 struct bfd_hash_table branch_hash_table;
3251
3252 /* Linker stub bfd. */
3253 bfd *stub_bfd;
3254
3255 /* Linker call-backs. */
4ce794b7
AM		 3256 asection * (*add_stub_section) (const char *, asection *);
3257 void (*layout_sections_again) (void);
721956f4
AM		 3258
3259 /* Array to keep track of which stub sections have been created, and
3260 information on stub grouping. */
3261 struct map_stub {
3262 /* This is the section to which stubs in the group will be attached. */
3263 asection *link_sec;
3264 /* The stub section. */
3265 asection *stub_sec;
ad8e1ba5
AM		 3266 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3267 bfd_vma toc_off;
721956f4
AM		 3268 } *stub_group;
3269
ad8e1ba5
AM		 3270 /* Temp used when calculating TOC pointers. */
3271 bfd_vma toc_curr;
3272
8f3bab57
AM		 3273 /* Highest input section id. */
3274 int top_id;
3275
734b6cf9
AM		 3276 /* Highest output section index. */
3277 int top_index;
3278
3279 /* List of input sections for each output section. */
3280 asection **input_list;
721956f4 3281
65f38f15 3282 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3283 asection *got;
4ce794b7
AM		 3284 asection *plt;
3285 asection *relplt;
3286 asection *dynbss;
3287 asection *relbss;
3288 asection *glink;
82bd7b59 3289 asection *sfpr;
4ce794b7
AM		 3290 asection *brlt;
3291 asection *relbrlt;
ec338859 3292
8387904d
AM		 3293 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3294 struct ppc_link_hash_entry *tls_get_addr;
3295 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3296
9b5ecbd0
AM		 3297 /* Statistics. */
3298 unsigned long stub_count[ppc_stub_plt_call];
3299
ee75fd95
AM		 3300 /* Number of stubs against global syms. */
3301 unsigned long stub_globals;
3302
ad8e1ba5 3303 /* Set if we should emit symbols for stubs. */
99877b66 3304 unsigned int emit_stub_syms:1;
ad8e1ba5 3305
4c52953f
AM		 3306 /* Support for multiple toc sections. */
3307 unsigned int no_multi_toc:1;
3308 unsigned int multi_toc_needed:1;
3309
5d1634d7 3310 /* Set on error. */
99877b66 3311 unsigned int stub_error:1;
721956f4
AM		 3312
3313 /* Flag set when small branches are detected. Used to
3314 select suitable defaults for the stub group size. */
99877b66
AM		 3315 unsigned int has_14bit_branch:1;
3316
3317 /* Temp used by ppc64_elf_check_directives. */
3318 unsigned int twiddled_syms:1;
721956f4
AM		 3319
3320 /* Incremented every time we size stubs. */
3321 unsigned int stub_iteration;
5d1634d7 3322
ec338859
AM		 3323 /* Small local sym to section mapping cache. */
3324 struct sym_sec_cache sym_sec;
65f38f15
AM		 3325};
3326
4c52953f
AM		 3327/* Rename some of the generic section flags to better document how they
3328 are used here. */
3329#define has_toc_reloc has_gp_reloc
3330#define makes_toc_func_call need_finalize_relax
3331#define call_check_in_progress reloc_done
3332
65f38f15
AM		 3333/* Get the ppc64 ELF linker hash table from a link_info structure. */
3334
3335#define ppc_hash_table(p) \
3336 ((struct ppc_link_hash_table *) ((p)->hash))
3337
721956f4
AM		 3338#define ppc_stub_hash_lookup(table, string, create, copy) \
3339 ((struct ppc_stub_hash_entry *) \
3340 bfd_hash_lookup ((table), (string), (create), (copy)))
3341
3342#define ppc_branch_hash_lookup(table, string, create, copy) \
3343 ((struct ppc_branch_hash_entry *) \
3344 bfd_hash_lookup ((table), (string), (create), (copy)))
3345
3346/* Create an entry in the stub hash table. */
3347
3348static struct bfd_hash_entry *
4ce794b7
AM		 3349stub_hash_newfunc (struct bfd_hash_entry *entry,
3350 struct bfd_hash_table *table,
3351 const char *string)
721956f4
AM		 3352{
3353 /* Allocate the structure if it has not already been allocated by a
3354 subclass. */
3355 if (entry == NULL)
3356 {
3357 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3358 if (entry == NULL)
3359 return entry;
3360 }
3361
3362 /* Call the allocation method of the superclass. */
3363 entry = bfd_hash_newfunc (entry, table, string);
3364 if (entry != NULL)
3365 {
3366 struct ppc_stub_hash_entry *eh;
3367
3368 /* Initialize the local fields. */
3369 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3370 eh->stub_type = ppc_stub_none;
721956f4
AM		 3371 eh->stub_sec = NULL;
3372 eh->stub_offset = 0;
3373 eh->target_value = 0;
3374 eh->target_section = NULL;
721956f4
AM		 3375 eh->h = NULL;
3376 eh->id_sec = NULL;
3377 }
3378
3379 return entry;
3380}
3381
3382/* Create an entry in the branch hash table. */
3383
3384static struct bfd_hash_entry *
4ce794b7
AM		 3385branch_hash_newfunc (struct bfd_hash_entry *entry,
3386 struct bfd_hash_table *table,
3387 const char *string)
721956f4
AM		 3388{
3389 /* Allocate the structure if it has not already been allocated by a
3390 subclass. */
3391 if (entry == NULL)
3392 {
3393 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3394 if (entry == NULL)
3395 return entry;
3396 }
3397
3398 /* Call the allocation method of the superclass. */
3399 entry = bfd_hash_newfunc (entry, table, string);
3400 if (entry != NULL)
3401 {
3402 struct ppc_branch_hash_entry *eh;
3403
3404 /* Initialize the local fields. */
3405 eh = (struct ppc_branch_hash_entry *) entry;
3406 eh->offset = 0;
3407 eh->iter = 0;
3408 }
3409
3410 return entry;
3411}
3412
65f38f15
AM		 3413/* Create an entry in a ppc64 ELF linker hash table. */
3414
3415static struct bfd_hash_entry *
4ce794b7
AM		 3416link_hash_newfunc (struct bfd_hash_entry *entry,
3417 struct bfd_hash_table *table,
3418 const char *string)
65f38f15
AM		 3419{
3420 /* Allocate the structure if it has not already been allocated by a
3421 subclass. */
3422 if (entry == NULL)
3423 {
3424 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3425 if (entry == NULL)
3426 return entry;
3427 }
3428
3429 /* Call the allocation method of the superclass. */
3430 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3431 if (entry != NULL)
3432 {
3433 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3434
908b32fc
AM		 3435 memset (&eh->stub_cache, 0,
3436 (sizeof (struct ppc_link_hash_entry)
3437 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3438 }
3439
3440 return entry;
3441}
3442
3443/* Create a ppc64 ELF linker hash table. */
3444
3445static struct bfd_link_hash_table *
4ce794b7 3446ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3447{
3448 struct ppc_link_hash_table *htab;
3449 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3450
4ce794b7 3451 htab = bfd_zmalloc (amt);
65f38f15
AM		 3452 if (htab == NULL)
3453 return NULL;
3454
3455 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3456 {
e2d34d7d 3457 free (htab);
65f38f15
AM		 3458 return NULL;
3459 }
3460
721956f4
AM		 3461 /* Init the stub hash table too. */
3462 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3463 return NULL;
3464
3465 /* And the branch hash table. */
3466 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3467 return NULL;
3468
3254fd24
AM		 3469 /* Initializing two fields of the union is just cosmetic. We really
3470 only care about glist, but when compiled on a 32-bit host the
3471 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3472 debugger inspection of these fields look nicer. */
3473 htab->elf.init_refcount.refcount = 0;
3474 htab->elf.init_refcount.glist = NULL;
3475 htab->elf.init_offset.offset = 0;
3476 htab->elf.init_offset.glist = NULL;
3477
65f38f15
AM		 3478 return &htab->elf.root;
3479}
3480
721956f4
AM		 3481/* Free the derived linker hash table. */
3482
3483static void
4ce794b7 3484ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3485{
3486 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3487
3488 bfd_hash_table_free (&ret->stub_hash_table);
3489 bfd_hash_table_free (&ret->branch_hash_table);
3490 _bfd_generic_link_hash_table_free (hash);
3491}
3492
e717da7e
AM		 3493/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3494
3495void
3496ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3497{
3498 struct ppc_link_hash_table *htab;
3499
3500 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3501
3502/* Always hook our dynamic sections into the first bfd, which is the
3503 linker created stub bfd. This ensures that the GOT header is at
3504 the start of the output TOC section. */
3505 htab = ppc_hash_table (info);
3506 htab->stub_bfd = abfd;
3507 htab->elf.dynobj = abfd;
3508}
3509
721956f4
AM		 3510/* Build a name for an entry in the stub hash table. */
3511
3512static char *
4ce794b7
AM		 3513ppc_stub_name (const asection *input_section,
3514 const asection *sym_sec,
3515 const struct ppc_link_hash_entry *h,
3516 const Elf_Internal_Rela *rel)
721956f4
AM		 3517{
3518 char *stub_name;
3519 bfd_size_type len;
3520
3521 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3522 offsets from a sym as a branch target? In fact, we could
3523 probably assume the addend is always zero. */
3524 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3525
3526 if (h)
3527 {
3528 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3529 stub_name = bfd_malloc (len);
3530 if (stub_name != NULL)
3531 {
97b639ba 3532 sprintf (stub_name, "%08x.%s+%x",
721956f4
AM		 3533 input_section->id & 0xffffffff,
3534 h->elf.root.root.string,
3535 (int) rel->r_addend & 0xffffffff);
3536 }
3537 }
3538 else
3539 {
ad8e1ba5 3540 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4
AM		 3541 stub_name = bfd_malloc (len);
3542 if (stub_name != NULL)
3543 {
97b639ba 3544 sprintf (stub_name, "%08x.%x:%x+%x",
721956f4
AM		 3545 input_section->id & 0xffffffff,
3546 sym_sec->id & 0xffffffff,
3547 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3548 (int) rel->r_addend & 0xffffffff);
3549 }
3550 }
ee75fd95
AM		 3551 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3552 stub_name[len - 2] = 0;
721956f4
AM		 3553 return stub_name;
3554}
3555
3556/* Look up an entry in the stub hash. Stub entries are cached because
3557 creating the stub name takes a bit of time. */
3558
3559static struct ppc_stub_hash_entry *
4ce794b7
AM		 3560ppc_get_stub_entry (const asection *input_section,
3561 const asection *sym_sec,
039b3fef 3562 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3563 const Elf_Internal_Rela *rel,
3564 struct ppc_link_hash_table *htab)
721956f4
AM		 3565{
3566 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3567 const asection *id_sec;
3568
3569 /* If this input section is part of a group of sections sharing one
3570 stub section, then use the id of the first section in the group.
3571 Stub names need to include a section id, as there may well be
3572 more than one stub used to reach say, printf, and we need to
3573 distinguish between them. */
3574 id_sec = htab->stub_group[input_section->id].link_sec;
3575
3576 if (h != NULL && h->stub_cache != NULL
3577 && h->stub_cache->h == h
3578 && h->stub_cache->id_sec == id_sec)
3579 {
3580 stub_entry = h->stub_cache;
3581 }
3582 else
3583 {
3584 char *stub_name;
3585
3586 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3587 if (stub_name == NULL)
3588 return NULL;
3589
3590 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3591 stub_name, FALSE, FALSE);
721956f4
AM		 3592 if (h != NULL)
3593 h->stub_cache = stub_entry;
3594
3595 free (stub_name);
3596 }
3597
3598 return stub_entry;
3599}
3600
3601/* Add a new stub entry to the stub hash. Not all fields of the new
3602 stub entry are initialised. */
3603
3604static struct ppc_stub_hash_entry *
4ce794b7
AM		 3605ppc_add_stub (const char *stub_name,
3606 asection *section,
3607 struct ppc_link_hash_table *htab)
721956f4
AM		 3608{
3609 asection *link_sec;
3610 asection *stub_sec;
3611 struct ppc_stub_hash_entry *stub_entry;
3612
3613 link_sec = htab->stub_group[section->id].link_sec;
3614 stub_sec = htab->stub_group[section->id].stub_sec;
3615 if (stub_sec == NULL)
3616 {
3617 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3618 if (stub_sec == NULL)
3619 {
d4c88bbb 3620 size_t namelen;
721956f4
AM		 3621 bfd_size_type len;
3622 char *s_name;
3623
d4c88bbb
AM		 3624 namelen = strlen (link_sec->name);
3625 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3626 s_name = bfd_alloc (htab->stub_bfd, len);
3627 if (s_name == NULL)
3628 return NULL;
3629
d4c88bbb
AM		 3630 memcpy (s_name, link_sec->name, namelen);
3631 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3632 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3633 if (stub_sec == NULL)
3634 return NULL;
3635 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3636 }
3637 htab->stub_group[section->id].stub_sec = stub_sec;
3638 }
3639
3640 /* Enter this entry into the linker stub hash table. */
3641 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3642 TRUE, FALSE);
721956f4
AM		 3643 if (stub_entry == NULL)
3644 {
d003868e
AM		 3645 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3646 section->owner, stub_name);
721956f4
AM		 3647 return NULL;
3648 }
3649
3650 stub_entry->stub_sec = stub_sec;
3651 stub_entry->stub_offset = 0;
3652 stub_entry->id_sec = link_sec;
3653 return stub_entry;
3654}
3655
82bd7b59
AM		 3656/* Create sections for linker generated code. */
3657
b34976b6 3658static bfd_boolean
4ce794b7 3659create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3660{
3661 struct ppc_link_hash_table *htab;
3662 flagword flags;
3663
3664 htab = ppc_hash_table (info);
3665
3666 /* Create .sfpr for code to save and restore fp regs. */
3667 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3668 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3669 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3670 flags);
82bd7b59 3671 if (htab->sfpr == NULL
82bd7b59 3672 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3673 return FALSE;
82bd7b59 3674
721956f4 3675 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3676 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3677 flags);
4ce794b7 3678 if (htab->glink == NULL
4ce794b7 3679 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3680 return FALSE;
82bd7b59 3681
721956f4
AM		 3682 /* Create .branch_lt for plt_branch stubs. */
3683 flags = (SEC_ALLOC | SEC_LOAD
3684 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3685 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3686 flags);
4ce794b7 3687 if (htab->brlt == NULL
4ce794b7 3688 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3689 return FALSE;
721956f4 3690
ee75fd95 3691 if (info->shared || info->emitrelocations)
721956f4
AM		 3692 {
3693 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3694 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3695 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3696 ".rela.branch_lt",
3697 flags);
4ce794b7 3698 if (!htab->relbrlt
4ce794b7 3699 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3700 return FALSE;
721956f4 3701 }
b34976b6 3702 return TRUE;
82bd7b59
AM		 3703}
3704
e717da7e
AM		 3705/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3706 not already done. */
65f38f15 3707
b34976b6 3708static bfd_boolean
e717da7e 3709create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3710{
e717da7e
AM		 3711 asection *got, *relgot;
3712 flagword flags;
3713 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3714
4ce794b7 3715 if (!htab->got)
e717da7e
AM		 3716 {
3717 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3718 return FALSE;
3719
3720 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3721 if (!htab->got)
3722 abort ();
3723 }
3724
3725 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3726 | SEC_LINKER_CREATED);
3727
3496cb2a 3728 got = bfd_make_section_with_flags (abfd, ".got", flags);
e717da7e 3729 if (!got
e717da7e
AM		 3730 || !bfd_set_section_alignment (abfd, got, 3))
3731 return FALSE;
65f38f15 3732
3496cb2a
L		 3733 relgot = bfd_make_section_with_flags (abfd, ".rela.got",
3734 flags | SEC_READONLY);
e717da7e 3735 if (!relgot
e717da7e 3736 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3737 return FALSE;
e717da7e
AM		 3738
3739 ppc64_elf_tdata (abfd)->got = got;
3740 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3741 return TRUE;
65f38f15 3742}
5bd4f169 3743
82bd7b59 3744/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3745
b34976b6 3746static bfd_boolean
4ce794b7 3747ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3748{
65f38f15 3749 struct ppc_link_hash_table *htab;
5bd4f169 3750
65f38f15 3751 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3752 return FALSE;
65f38f15 3753
e717da7e
AM		 3754 htab = ppc_hash_table (info);
3755 if (!htab->got)
3756 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3757 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3758 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3759 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3760 if (!info->shared)
4ce794b7 3761 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3762
e717da7e 3763 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3764 || (!info->shared && !htab->relbss))
65f38f15
AM		 3765 abort ();
3766
b34976b6 3767 return TRUE;
5bd4f169
AM		 3768}
3769
40d16e0b
AM		 3770/* Merge PLT info on FROM with that on TO. */
3771
3772static void
3773move_plt_plist (struct ppc_link_hash_entry *from,
3774 struct ppc_link_hash_entry *to)
3775{
3776 if (from->elf.plt.plist != NULL)
3777 {
3778 if (to->elf.plt.plist != NULL)
3779 {
3780 struct plt_entry **entp;
3781 struct plt_entry *ent;
3782
3783 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3784 {
3785 struct plt_entry *dent;
3786
3787 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3788 if (dent->addend == ent->addend)
3789 {
3790 dent->plt.refcount += ent->plt.refcount;
3791 *entp = ent->next;
3792 break;
3793 }
3794 if (dent == NULL)
3795 entp = &ent->next;
3796 }
3797 *entp = to->elf.plt.plist;
3798 }
3799
3800 to->elf.plt.plist = from->elf.plt.plist;
3801 from->elf.plt.plist = NULL;
3802 }
3803}
3804
65f38f15
AM		 3805/* Copy the extra info we tack onto an elf_link_hash_entry. */
3806
3807static void
9c5bfbb7
AM		 3808ppc64_elf_copy_indirect_symbol
3809 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3810 struct elf_link_hash_entry *dir,
3811 struct elf_link_hash_entry *ind)
65f38f15
AM		 3812{
3813 struct ppc_link_hash_entry *edir, *eind;
3814
3815 edir = (struct ppc_link_hash_entry *) dir;
3816 eind = (struct ppc_link_hash_entry *) ind;
3817
411e1bfb 3818 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3819 if (eind->dyn_relocs != NULL)
65f38f15 3820 {
bbd7ec4a
AM		 3821 if (edir->dyn_relocs != NULL)
3822 {
3823 struct ppc_dyn_relocs **pp;
3824 struct ppc_dyn_relocs *p;
3825
411e1bfb 3826 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3827 abort ();
3828
3829 /* Add reloc counts against the weak sym to the strong sym
3830 list. Merge any entries against the same section. */
3831 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3832 {
3833 struct ppc_dyn_relocs *q;
3834
3835 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3836 if (q->sec == p->sec)
3837 {
3838 q->pc_count += p->pc_count;
3839 q->count += p->count;
3840 *pp = p->next;
3841 break;
3842 }
3843 if (q == NULL)
3844 pp = &p->next;
3845 }
3846 *pp = edir->dyn_relocs;
3847 }
3848
65f38f15
AM		 3849 edir->dyn_relocs = eind->dyn_relocs;
3850 eind->dyn_relocs = NULL;
3851 }
65f38f15 3852
6349e628
AM		 3853 edir->is_func |= eind->is_func;
3854 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3855 edir->tls_mask |= eind->tls_mask;
6349e628 3856
81848ca0 3857 /* If called to transfer flags for a weakdef during processing
f5385ebf 3858 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3859 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3860 if (!(ELIMINATE_COPY_RELOCS
3861 && eind->elf.root.type != bfd_link_hash_indirect
3862 && edir->elf.dynamic_adjusted))
3863 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3864
f5385ebf
AM		 3865 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3866 edir->elf.ref_regular |= eind->elf.ref_regular;
3867 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3868 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3869
3870 /* If we were called to copy over info for a weak sym, that's all. */
3871 if (eind->elf.root.type != bfd_link_hash_indirect)
3872 return;
3873
81848ca0
AM		 3874 /* Copy over got entries that we may have already seen to the
3875 symbol which just became indirect. */
411e1bfb
AM		 3876 if (eind->elf.got.glist != NULL)
3877 {
3878 if (edir->elf.got.glist != NULL)
3879 {
3880 struct got_entry **entp;
3881 struct got_entry *ent;
3882
3883 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3884 {
3885 struct got_entry *dent;
3886
3887 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3888 if (dent->addend == ent->addend
e717da7e 3889 && dent->owner == ent->owner
411e1bfb
AM		 3890 && dent->tls_type == ent->tls_type)
3891 {
3892 dent->got.refcount += ent->got.refcount;
3893 *entp = ent->next;
3894 break;
3895 }
3896 if (dent == NULL)
3897 entp = &ent->next;
3898 }
3899 *entp = edir->elf.got.glist;
3900 }
3901
3902 edir->elf.got.glist = eind->elf.got.glist;
3903 eind->elf.got.glist = NULL;
3904 }
3905
3906 /* And plt entries. */
40d16e0b 3907 move_plt_plist (eind, edir);
411e1bfb 3908
411e1bfb
AM		 3909 if (edir->elf.dynindx == -1)
3910 {
3911 edir->elf.dynindx = eind->elf.dynindx;
3912 edir->elf.dynstr_index = eind->elf.dynstr_index;
3913 eind->elf.dynindx = -1;
3914 eind->elf.dynstr_index = 0;
3915 }
3916 else
3917 BFD_ASSERT (eind->elf.dynindx == -1);
3918}
3919
8387904d
AM		 3920/* Find the function descriptor hash entry from the given function code
3921 hash entry FH. Link the entries via their OH fields. */
3922
3923static struct ppc_link_hash_entry *
3924get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3925{
3926 struct ppc_link_hash_entry *fdh = fh->oh;
3927
3928 if (fdh == NULL)
3929 {
3930 const char *fd_name = fh->elf.root.root.string + 1;
3931
3932 fdh = (struct ppc_link_hash_entry *)
3933 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3934 if (fdh != NULL)
3935 {
3936 fdh->is_func_descriptor = 1;
3937 fdh->oh = fh;
3938 fh->is_func = 1;
3939 fh->oh = fdh;
3940 }
3941 }
3942
3943 return fdh;
3944}
3945
bb700d78
AM		 3946/* Make a fake function descriptor sym for the code sym FH. */
3947
3948static struct ppc_link_hash_entry *
3949make_fdh (struct bfd_link_info *info,
908b32fc 3950 struct ppc_link_hash_entry *fh)
bb700d78
AM		 3951{
3952 bfd *abfd;
3953 asymbol *newsym;
3954 struct bfd_link_hash_entry *bh;
3955 struct ppc_link_hash_entry *fdh;
3956
3957 abfd = fh->elf.root.u.undef.abfd;
3958 newsym = bfd_make_empty_symbol (abfd);
3959 newsym->name = fh->elf.root.root.string + 1;
3960 newsym->section = bfd_und_section_ptr;
3961 newsym->value = 0;
908b32fc 3962 newsym->flags = BSF_WEAK;
bb700d78
AM		 3963
3964 bh = NULL;
3965 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3966 newsym->flags, newsym->section,
3967 newsym->value, NULL, FALSE, FALSE,
3968 &bh))
3969 return NULL;
3970
3971 fdh = (struct ppc_link_hash_entry *) bh;
3972 fdh->elf.non_elf = 0;
908b32fc
AM		 3973 fdh->fake = 1;
3974 fdh->is_func_descriptor = 1;
3975 fdh->oh = fh;
3976 fh->is_func = 1;
3977 fh->oh = fdh;
bb700d78
AM		 3978 return fdh;
3979}
3980
8387904d
AM		 3981/* Hacks to support old ABI code.
3982 When making function calls, old ABI code references function entry
3983 points (dot symbols), while new ABI code references the function
3984 descriptor symbol. We need to make any combination of reference and
3985 definition work together, without breaking archive linking.
3986
3987 For a defined function "foo" and an undefined call to "bar":
3988 An old object defines "foo" and ".foo", references ".bar" (possibly
3989 "bar" too).
3990 A new object defines "foo" and references "bar".
3991
3992 A new object thus has no problem with its undefined symbols being
3993 satisfied by definitions in an old object. On the other hand, the
3994 old object won't have ".bar" satisfied by a new object. */
3995
3996/* Fix function descriptor symbols defined in .opd sections to be
3997 function type. */
555cd476
AM		 3998
3999static bfd_boolean
4000ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4001 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4002 Elf_Internal_Sym *isym,
4003 const char **name ATTRIBUTE_UNUSED,
4004 flagword *flags ATTRIBUTE_UNUSED,
4005 asection **sec,
4006 bfd_vma *value ATTRIBUTE_UNUSED)
4007{
8843416a
AM		 4008 if (*sec != NULL
4009 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476
AM		 4010 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4011 return TRUE;
4012}
4013
8387904d 4014/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4015 inclusion of a new ABI object archive that defines "bar".
4016 NAME is a symbol defined in an archive. Return a symbol in the hash
4017 table that might be satisfied by the archive symbols. */
8387904d
AM		 4018
4019static struct elf_link_hash_entry *
4020ppc64_elf_archive_symbol_lookup (bfd *abfd,
4021 struct bfd_link_info *info,
4022 const char *name)
4023{
4024 struct elf_link_hash_entry *h;
4025 char *dot_name;
4026 size_t len;
4027
4028 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4029 if (h != NULL
4030 /* Don't return this sym if it is a fake function descriptor
4031 created by add_symbol_adjust. */
4032 && !(h->root.type == bfd_link_hash_undefweak
4033 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4034 return h;
4035
4036 if (name[0] == '.')
4037 return h;
4038
4039 len = strlen (name);
4040 dot_name = bfd_alloc (abfd, len + 2);
4041 if (dot_name == NULL)
4042 return (struct elf_link_hash_entry *) 0 - 1;
4043 dot_name[0] = '.';
4044 memcpy (dot_name + 1, name, len + 1);
4045 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4046 bfd_release (abfd, dot_name);
4047 return h;
4048}
4049
4050/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4051 new ABI object defines "bar". Well, at least, undefined dot symbols
4052 are made weak. This stops later archive searches from including an
4053 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4054 prevents the linker complaining about undefined symbols.
4055 We also check and correct mismatched symbol visibility here. The
4056 most restrictive visibility of the function descriptor and the
4057 function entry symbol is used. */
8387904d 4058
bb700d78
AM		 4059struct add_symbol_adjust_data
4060{
4061 struct bfd_link_info *info;
4062 bfd_boolean ok;
4063};
4064
8387904d
AM		 4065static bfd_boolean
4066add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4067{
bb700d78 4068 struct add_symbol_adjust_data *data;
8387904d 4069 struct ppc_link_hash_table *htab;
99877b66 4070 struct ppc_link_hash_entry *eh;
8387904d
AM		 4071 struct ppc_link_hash_entry *fdh;
4072
4073 if (h->root.type == bfd_link_hash_indirect)
4074 return TRUE;
4075
4076 if (h->root.type == bfd_link_hash_warning)
4077 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4078
35b0ce59 4079 if (h->root.root.string[0] != '.')
8387904d
AM		 4080 return TRUE;
4081
bb700d78
AM		 4082 data = inf;
4083 htab = ppc_hash_table (data->info);
99877b66
AM		 4084 eh = (struct ppc_link_hash_entry *) h;
4085 fdh = get_fdh (eh, htab);
bb700d78 4086 if (fdh == NULL
c4f68ce3 4087 && !data->info->relocatable
bb700d78
AM		 4088 && (eh->elf.root.type == bfd_link_hash_undefined
4089 || eh->elf.root.type == bfd_link_hash_undefweak)
4090 && eh->elf.ref_regular)
4091 {
4092 /* Make an undefweak function descriptor sym, which is enough to
4093 pull in an --as-needed shared lib, but won't cause link
4094 errors. Archives are handled elsewhere. */
908b32fc 4095 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4096 if (fdh == NULL)
4097 data->ok = FALSE;
4098 else
4099 fdh->elf.ref_regular = 1;
4100 }
c4f68ce3
AM		 4101 else if (fdh != NULL
4102 && (fdh->elf.root.type == bfd_link_hash_defined
4103 || fdh->elf.root.type == bfd_link_hash_defweak))
8387904d 4104 {
35b0ce59
AM		 4105 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4106 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4107 if (entry_vis < descr_vis)
4108 fdh->elf.other += entry_vis - descr_vis;
4109 else if (entry_vis > descr_vis)
4110 eh->elf.other += descr_vis - entry_vis;
4111
c4f68ce3 4112 if (eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4113 {
4114 eh->elf.root.type = bfd_link_hash_undefweak;
4115 eh->was_undefined = 1;
4116 htab->twiddled_syms = 1;
4117 }
8387904d 4118 }
99877b66 4119
8387904d
AM		 4120 return TRUE;
4121}
4122
4123static bfd_boolean
4124ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4125 struct bfd_link_info *info)
4126{
99877b66 4127 struct ppc_link_hash_table *htab;
bb700d78 4128 struct add_symbol_adjust_data data;
99877b66
AM		 4129
4130 htab = ppc_hash_table (info);
ee75fd95 4131 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4132 return TRUE;
4133
bb700d78
AM		 4134 data.info = info;
4135 data.ok = TRUE;
4136 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4137
4138 /* We need to fix the undefs list for any syms we have twiddled to
4139 undef_weak. */
4140 if (htab->twiddled_syms)
4141 {
77cfaee6 4142 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4143 htab->twiddled_syms = 0;
4144 }
bb700d78 4145 return data.ok;
8387904d
AM		 4146}
4147
411e1bfb 4148static bfd_boolean
4ce794b7
AM		 4149update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4150 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4151{
4152 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4153 char *local_got_tls_masks;
411e1bfb
AM		 4154
4155 if (local_got_ents == NULL)
4156 {
4157 bfd_size_type size = symtab_hdr->sh_info;
4158
e7b938ca 4159 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4160 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4161 if (local_got_ents == NULL)
4162 return FALSE;
4163 elf_local_got_ents (abfd) = local_got_ents;
4164 }
4165
4166 if ((tls_type & TLS_EXPLICIT) == 0)
4167 {
4168 struct got_entry *ent;
4169
4170 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4171 if (ent->addend == r_addend
4172 && ent->owner == abfd
4173 && ent->tls_type == tls_type)
411e1bfb
AM		 4174 break;
4175 if (ent == NULL)
4176 {
4177 bfd_size_type amt = sizeof (*ent);
4ce794b7 4178 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4179 if (ent == NULL)
4180 return FALSE;
4181 ent->next = local_got_ents[r_symndx];
4182 ent->addend = r_addend;
e717da7e 4183 ent->owner = abfd;
411e1bfb
AM		 4184 ent->tls_type = tls_type;
4185 ent->got.refcount = 0;
4186 local_got_ents[r_symndx] = ent;
4187 }
4188 ent->got.refcount += 1;
4189 }
4190
e7b938ca
AM		 4191 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4192 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4193 return TRUE;
65f38f15
AM		 4194}
4195
411e1bfb 4196static bfd_boolean
4ce794b7 4197update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4198{
411e1bfb 4199 struct plt_entry *ent;
1e2f5b6e 4200
411e1bfb
AM		 4201 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4202 if (ent->addend == addend)
4203 break;
4204 if (ent == NULL)
1e2f5b6e 4205 {
411e1bfb 4206 bfd_size_type amt = sizeof (*ent);
4ce794b7 4207 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4208 if (ent == NULL)
4209 return FALSE;
4210 ent->next = eh->elf.plt.plist;
4211 ent->addend = addend;
4212 ent->plt.refcount = 0;
4213 eh->elf.plt.plist = ent;
1e2f5b6e 4214 }
411e1bfb 4215 ent->plt.refcount += 1;
f5385ebf 4216 eh->elf.needs_plt = 1;
93f3fa99
AM		 4217 if (eh->elf.root.root.string[0] == '.'
4218 && eh->elf.root.root.string[1] != '\0')
4219 eh->is_func = 1;
b34976b6 4220 return TRUE;
1e2f5b6e
AM		 4221}
4222
5bd4f169 4223/* Look through the relocs for a section during the first phase, and
65f38f15 4224 calculate needed space in the global offset table, procedure
5d1634d7 4225 linkage table, and dynamic reloc sections. */
5bd4f169 4226
b34976b6 4227static bfd_boolean
4ce794b7
AM		 4228ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4229 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4230{
65f38f15 4231 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4232 Elf_Internal_Shdr *symtab_hdr;
4233 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4234 const Elf_Internal_Rela *rel;
4235 const Elf_Internal_Rela *rel_end;
5bd4f169 4236 asection *sreloc;
1e2f5b6e 4237 asection **opd_sym_map;
5bd4f169 4238
1049f94e 4239 if (info->relocatable)
b34976b6 4240 return TRUE;
5bd4f169 4241
680a3378
AM		 4242 /* Don't do anything special with non-loaded, non-alloced sections.
4243 In particular, any relocs in such sections should not affect GOT
4244 and PLT reference counting (ie. we don't allow them to create GOT
4245 or PLT entries), there's no possibility or desire to optimize TLS
4246 relocs, and there's not much point in propagating relocs to shared
4247 libs that the dynamic linker won't relocate. */
4248 if ((sec->flags & SEC_ALLOC) == 0)
4249 return TRUE;
4250
65f38f15 4251 htab = ppc_hash_table (info);
5bd4f169 4252 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4253
4254 sym_hashes = elf_sym_hashes (abfd);
4255 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4256 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4257 - symtab_hdr->sh_info);
5bd4f169
AM		 4258
4259 sreloc = NULL;
1e2f5b6e
AM		 4260 opd_sym_map = NULL;
4261 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4262 {
4263 /* Garbage collection needs some extra help with .opd sections.
4264 We don't want to necessarily keep everything referenced by
4265 relocs in .opd, as that would keep all functions. Instead,
4266 if we reference an .opd symbol (a function descriptor), we
4267 want to keep the function code symbol's section. This is
4268 easy for global symbols, but for local syms we need to keep
4269 information about the associated function section. Later, if
4270 edit_opd deletes entries, we'll use this array to adjust
4271 local syms in .opd. */
4272 union opd_info {
4273 asection *func_section;
4274 long entry_adjust;
4275 };
4276 bfd_size_type amt;
4277
3f764659 4278 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4279 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4280 if (opd_sym_map == NULL)
b34976b6 4281 return FALSE;
f0abc2a1 4282 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4283 }
5bd4f169 4284
82bd7b59
AM		 4285 if (htab->sfpr == NULL
4286 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4287 return FALSE;
82bd7b59 4288
5bd4f169
AM		 4289 rel_end = relocs + sec->reloc_count;
4290 for (rel = relocs; rel < rel_end; rel++)
4291 {
4292 unsigned long r_symndx;
4293 struct elf_link_hash_entry *h;
04c9666a 4294 enum elf_ppc64_reloc_type r_type;
411e1bfb 4295 int tls_type = 0;
5bd4f169
AM		 4296
4297 r_symndx = ELF64_R_SYM (rel->r_info);
4298 if (r_symndx < symtab_hdr->sh_info)
4299 h = NULL;
4300 else
4301 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4302
4ce794b7 4303 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4304 switch (r_type)
5bd4f169 4305 {
411e1bfb
AM		 4306 case R_PPC64_GOT_TLSLD16:
4307 case R_PPC64_GOT_TLSLD16_LO:
4308 case R_PPC64_GOT_TLSLD16_HI:
4309 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4310 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4311 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4312 goto dogottls;
4313
4314 case R_PPC64_GOT_TLSGD16:
4315 case R_PPC64_GOT_TLSGD16_LO:
4316 case R_PPC64_GOT_TLSGD16_HI:
4317 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4318 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4319 goto dogottls;
4320
4321 case R_PPC64_GOT_TPREL16_DS:
4322 case R_PPC64_GOT_TPREL16_LO_DS:
4323 case R_PPC64_GOT_TPREL16_HI:
4324 case R_PPC64_GOT_TPREL16_HA:
4325 if (info->shared)
4326 info->flags |= DF_STATIC_TLS;
4327 tls_type = TLS_TLS | TLS_TPREL;
4328 goto dogottls;
4329
4330 case R_PPC64_GOT_DTPREL16_DS:
4331 case R_PPC64_GOT_DTPREL16_LO_DS:
4332 case R_PPC64_GOT_DTPREL16_HI:
4333 case R_PPC64_GOT_DTPREL16_HA:
4334 tls_type = TLS_TLS | TLS_DTPREL;
4335 dogottls:
4336 sec->has_tls_reloc = 1;
4337 /* Fall thru */
4338
5bd4f169 4339 case R_PPC64_GOT16:
5bd4f169 4340 case R_PPC64_GOT16_DS:
65f38f15
AM		 4341 case R_PPC64_GOT16_HA:
4342 case R_PPC64_GOT16_HI:
4343 case R_PPC64_GOT16_LO:
5bd4f169 4344 case R_PPC64_GOT16_LO_DS:
65f38f15 4345 /* This symbol requires a global offset table entry. */
4c52953f 4346 sec->has_toc_reloc = 1;
e717da7e
AM		 4347 if (ppc64_elf_tdata (abfd)->got == NULL
4348 && !create_got_section (abfd, info))
b34976b6 4349 return FALSE;
5bd4f169
AM		 4350
4351 if (h != NULL)
4352 {
411e1bfb
AM		 4353 struct ppc_link_hash_entry *eh;
4354 struct got_entry *ent;
65f38f15 4355
411e1bfb
AM		 4356 eh = (struct ppc_link_hash_entry *) h;
4357 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4358 if (ent->addend == rel->r_addend
e717da7e 4359 && ent->owner == abfd
411e1bfb
AM		 4360 && ent->tls_type == tls_type)
4361 break;
4362 if (ent == NULL)
5bd4f169 4363 {
411e1bfb 4364 bfd_size_type amt = sizeof (*ent);
4ce794b7 4365 ent = bfd_alloc (abfd, amt);
411e1bfb 4366 if (ent == NULL)
b34976b6 4367 return FALSE;
411e1bfb
AM		 4368 ent->next = eh->elf.got.glist;
4369 ent->addend = rel->r_addend;
e717da7e 4370 ent->owner = abfd;
411e1bfb
AM		 4371 ent->tls_type = tls_type;
4372 ent->got.refcount = 0;
4373 eh->elf.got.glist = ent;
5bd4f169 4374 }
411e1bfb 4375 ent->got.refcount += 1;
e7b938ca 4376 eh->tls_mask |= tls_type;
5bd4f169 4377 }
411e1bfb
AM		 4378 else
4379 /* This is a global offset table entry for a local symbol. */
4380 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4381 rel->r_addend, tls_type))
4382 return FALSE;
5bd4f169
AM		 4383 break;
4384
5bd4f169 4385 case R_PPC64_PLT16_HA:
65f38f15
AM		 4386 case R_PPC64_PLT16_HI:
4387 case R_PPC64_PLT16_LO:
4388 case R_PPC64_PLT32:
4389 case R_PPC64_PLT64:
5bd4f169 4390 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4391 actually build the entry in adjust_dynamic_symbol,
4392 because this might be a case of linking PIC code without
4393 linking in any dynamic objects, in which case we don't
4394 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4395 if (h == NULL)
4396 {
4397 /* It does not make sense to have a procedure linkage
3fad3c7c 4398 table entry for a local symbol. */
5bd4f169 4399 bfd_set_error (bfd_error_bad_value);
b34976b6 4400 return FALSE;
5bd4f169 4401 }
411e1bfb
AM		 4402 else
4403 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4404 rel->r_addend))
4405 return FALSE;
5bd4f169
AM		 4406 break;
4407
4408 /* The following relocations don't need to propagate the
4409 relocation if linking a shared object since they are
4410 section relative. */
4411 case R_PPC64_SECTOFF:
4412 case R_PPC64_SECTOFF_LO:
4413 case R_PPC64_SECTOFF_HI:
4414 case R_PPC64_SECTOFF_HA:
4415 case R_PPC64_SECTOFF_DS:
4416 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4417 case R_PPC64_DTPREL16:
4418 case R_PPC64_DTPREL16_LO:
4419 case R_PPC64_DTPREL16_HI:
4420 case R_PPC64_DTPREL16_HA:
4421 case R_PPC64_DTPREL16_DS:
4422 case R_PPC64_DTPREL16_LO_DS:
4423 case R_PPC64_DTPREL16_HIGHER:
4424 case R_PPC64_DTPREL16_HIGHERA:
4425 case R_PPC64_DTPREL16_HIGHEST:
4426 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4427 break;
4428
ad8e1ba5
AM		 4429 /* Nor do these. */
4430 case R_PPC64_TOC16:
4431 case R_PPC64_TOC16_LO:
4432 case R_PPC64_TOC16_HI:
4433 case R_PPC64_TOC16_HA:
4434 case R_PPC64_TOC16_DS:
4435 case R_PPC64_TOC16_LO_DS:
4c52953f 4436 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4437 break;
4438
5bd4f169
AM		 4439 /* This relocation describes the C++ object vtable hierarchy.
4440 Reconstruct it for later use during GC. */
4441 case R_PPC64_GNU_VTINHERIT:
c152c796 4442 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4443 return FALSE;
5bd4f169
AM		 4444 break;
4445
4446 /* This relocation describes which C++ vtable entries are actually
4447 used. Record for later use during GC. */
4448 case R_PPC64_GNU_VTENTRY:
c152c796 4449 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4450 return FALSE;
5bd4f169
AM		 4451 break;
4452
721956f4
AM		 4453 case R_PPC64_REL14:
4454 case R_PPC64_REL14_BRTAKEN:
4455 case R_PPC64_REL14_BRNTAKEN:
4456 htab->has_14bit_branch = 1;
4457 /* Fall through. */
4458
5d1634d7 4459 case R_PPC64_REL24:
8387904d 4460 if (h != NULL)
5d1634d7
AM		 4461 {
4462 /* We may need a .plt entry if the function this reloc
4463 refers to is in a shared lib. */
411e1bfb
AM		 4464 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4465 rel->r_addend))
4466 return FALSE;
8387904d
AM		 4467 if (h == &htab->tls_get_addr->elf
4468 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4469 sec->has_tls_reloc = 1;
8387904d
AM		 4470 else if (htab->tls_get_addr == NULL
4471 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4472 && (h->root.root.string[15] == 0
4473 || h->root.root.string[15] == '@'))
411e1bfb 4474 {
8387904d
AM		 4475 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4476 sec->has_tls_reloc = 1;
4477 }
4478 else if (htab->tls_get_addr_fd == NULL
4479 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4480 && (h->root.root.string[14] == 0
4481 || h->root.root.string[14] == '@'))
4482 {
4483 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4484 sec->has_tls_reloc = 1;
4485 }
4486 }
4487 break;
4488
4489 case R_PPC64_TPREL64:
4490 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4491 if (info->shared)
4492 info->flags |= DF_STATIC_TLS;
4493 goto dotlstoc;
4494
4495 case R_PPC64_DTPMOD64:
4496 if (rel + 1 < rel_end
4497 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4498 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4499 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4500 else
951fd09b 4501 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4502 goto dotlstoc;
4503
4504 case R_PPC64_DTPREL64:
4505 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4506 if (rel != relocs
4507 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4508 && rel[-1].r_offset == rel->r_offset - 8)
4509 /* This is the second reloc of a dtpmod, dtprel pair.
4510 Don't mark with TLS_DTPREL. */
4511 goto dodyn;
4512
4513 dotlstoc:
4514 sec->has_tls_reloc = 1;
4515 if (h != NULL)
4516 {
4517 struct ppc_link_hash_entry *eh;
4518 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4519 eh->tls_mask |= tls_type;
411e1bfb
AM		 4520 }
4521 else
4522 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4523 rel->r_addend, tls_type))
4524 return FALSE;
4525
4526 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4527 {
e7b938ca 4528 /* One extra to simplify get_tls_mask. */
eea6121a 4529 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4530 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4531 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4532 return FALSE;
4533 }
4534 BFD_ASSERT (rel->r_offset % 8 == 0);
4535 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4536
4537 /* Mark the second slot of a GD or LD entry.
4538 -1 to indicate GD and -2 to indicate LD. */
4539 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4540 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4541 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4542 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4543 goto dodyn;
4544
4545 case R_PPC64_TPREL16:
4546 case R_PPC64_TPREL16_LO:
4547 case R_PPC64_TPREL16_HI:
4548 case R_PPC64_TPREL16_HA:
4549 case R_PPC64_TPREL16_DS:
4550 case R_PPC64_TPREL16_LO_DS:
4551 case R_PPC64_TPREL16_HIGHER:
4552 case R_PPC64_TPREL16_HIGHERA:
4553 case R_PPC64_TPREL16_HIGHEST:
4554 case R_PPC64_TPREL16_HIGHESTA:
4555 if (info->shared)
4556 {
4557 info->flags |= DF_STATIC_TLS;
4558 goto dodyn;
5d1634d7
AM		 4559 }
4560 break;
4561
e86ce104 4562 case R_PPC64_ADDR64:
1e2f5b6e 4563 if (opd_sym_map != NULL
1e2f5b6e 4564 && rel + 1 < rel_end
4ce794b7 4565 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4566 {
8387904d
AM		 4567 if (h != NULL)
4568 {
4569 if (h->root.root.string[0] == '.'
4570 && h->root.root.string[1] != 0
4571 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4572 ;
4573 else
4574 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4575 }
4576 else
4577 {
4578 asection *s;
1e2f5b6e 4579
8387904d
AM		 4580 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4581 r_symndx);
4582 if (s == NULL)
4583 return FALSE;
4584 else if (s != sec)
3f764659 4585 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4586 }
1e2f5b6e 4587 }
e86ce104
AM		 4588 /* Fall through. */
4589
04c9666a 4590 case R_PPC64_REL30:
5bd4f169 4591 case R_PPC64_REL32:
04c9666a 4592 case R_PPC64_REL64:
65f38f15
AM		 4593 case R_PPC64_ADDR14:
4594 case R_PPC64_ADDR14_BRNTAKEN:
4595 case R_PPC64_ADDR14_BRTAKEN:
4596 case R_PPC64_ADDR16:
4597 case R_PPC64_ADDR16_DS:
4598 case R_PPC64_ADDR16_HA:
4599 case R_PPC64_ADDR16_HI:
4600 case R_PPC64_ADDR16_HIGHER:
4601 case R_PPC64_ADDR16_HIGHERA:
4602 case R_PPC64_ADDR16_HIGHEST:
4603 case R_PPC64_ADDR16_HIGHESTA:
4604 case R_PPC64_ADDR16_LO:
4605 case R_PPC64_ADDR16_LO_DS:
4606 case R_PPC64_ADDR24:
65f38f15 4607 case R_PPC64_ADDR32:
65f38f15
AM		 4608 case R_PPC64_UADDR16:
4609 case R_PPC64_UADDR32:
4610 case R_PPC64_UADDR64:
5bd4f169 4611 case R_PPC64_TOC:
81848ca0
AM		 4612 if (h != NULL && !info->shared)
4613 /* We may need a copy reloc. */
f5385ebf 4614 h->non_got_ref = 1;
81848ca0 4615
41bd81ab 4616 /* Don't propagate .opd relocs. */
1e2f5b6e 4617 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4618 break;
e86ce104 4619
65f38f15
AM		 4620 /* If we are creating a shared library, and this is a reloc
4621 against a global symbol, or a non PC relative reloc
4622 against a local symbol, then we need to copy the reloc
4623 into the shared library. However, if we are linking with
4624 -Bsymbolic, we do not need to copy a reloc against a
4625 global symbol which is defined in an object we are
4626 including in the link (i.e., DEF_REGULAR is set). At
4627 this point we have not seen all the input files, so it is
4628 possible that DEF_REGULAR is not set now but will be set
4629 later (it is never cleared). In case of a weak definition,
4630 DEF_REGULAR may be cleared later by a strong definition in
4631 a shared library. We account for that possibility below by
f4656909 4632 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4633 table entry. A similar situation occurs when creating
4634 shared libraries and symbol visibility changes render the
4635 symbol local.
4636
4637 If on the other hand, we are creating an executable, we
4638 may need to keep relocations for symbols satisfied by a
4639 dynamic library if we manage to avoid copy relocs for the
4640 symbol. */
411e1bfb 4641 dodyn:
65f38f15 4642 if ((info->shared
411e1bfb 4643 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4644 || (h != NULL
4645 && (! info->symbolic
4646 || h->root.type == bfd_link_hash_defweak
f5385ebf 4647 || !h->def_regular))))
f4656909
AM		 4648 || (ELIMINATE_COPY_RELOCS
4649 && !info->shared
65f38f15
AM		 4650 && h != NULL
4651 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4652 || !h->def_regular)))
5bd4f169 4653 {
ec338859
AM		 4654 struct ppc_dyn_relocs *p;
4655 struct ppc_dyn_relocs **head;
4656
65f38f15
AM		 4657 /* We must copy these reloc types into the output file.
4658 Create a reloc section in dynobj and make room for
4659 this reloc. */
5bd4f169
AM		 4660 if (sreloc == NULL)
4661 {
4662 const char *name;
65f38f15 4663 bfd *dynobj;
5bd4f169
AM		 4664
4665 name = (bfd_elf_string_from_elf_section
4666 (abfd,
4667 elf_elfheader (abfd)->e_shstrndx,
4668 elf_section_data (sec)->rel_hdr.sh_name));
4669 if (name == NULL)
b34976b6 4670 return FALSE;
5bd4f169 4671
65f38f15
AM		 4672 if (strncmp (name, ".rela", 5) != 0
4673 || strcmp (bfd_get_section_name (abfd, sec),
4674 name + 5) != 0)
4675 {
4676 (*_bfd_error_handler)
d003868e
AM		 4677 (_("%B: bad relocation section name `%s\'"),
4678 abfd, name);
5d1634d7 4679 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4680 }
4681
65f38f15 4682 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4683 sreloc = bfd_get_section_by_name (dynobj, name);
4684 if (sreloc == NULL)
4685 {
4686 flagword flags;
4687
5bd4f169 4688 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4689 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4690 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4691 sreloc = bfd_make_section_with_flags (dynobj,
4692 name,
4693 flags);
5bd4f169 4694 if (sreloc == NULL
65f38f15 4695 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4696 return FALSE;
5bd4f169 4697 }
65f38f15 4698 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4699 }
4700
65f38f15
AM		 4701 /* If this is a global symbol, we count the number of
4702 relocations we need for this symbol. */
4703 if (h != NULL)
4704 {
ec338859 4705 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4706 }
4707 else
4708 {
ec338859
AM		 4709 /* Track dynamic relocs needed for local syms too.
4710 We really need local syms available to do this
4711 easily. Oh well. */
4712
4713 asection *s;
4714 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4715 sec, r_symndx);
4716 if (s == NULL)
b34976b6 4717 return FALSE;
ec338859
AM		 4718
4719 head = ((struct ppc_dyn_relocs **)
4720 &elf_section_data (s)->local_dynrel);
65f38f15 4721 }
ec338859
AM		 4722
4723 p = *head;
4724 if (p == NULL || p->sec != sec)
4725 {
4ce794b7 4726 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4727 if (p == NULL)
b34976b6 4728 return FALSE;
ec338859
AM		 4729 p->next = *head;
4730 *head = p;
4731 p->sec = sec;
4732 p->count = 0;
4733 p->pc_count = 0;
4734 }
4735
4736 p->count += 1;
411e1bfb 4737 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4738 p->pc_count += 1;
65f38f15 4739 }
5bd4f169 4740 break;
65f38f15
AM		 4741
4742 default:
96e0dda4 4743 break;
5bd4f169
AM		 4744 }
4745 }
4746
b34976b6 4747 return TRUE;
5bd4f169
AM		 4748}
4749
8387904d
AM		 4750/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4751 of the code entry point, and its section. */
4752
4753static bfd_vma
4754opd_entry_value (asection *opd_sec,
4755 bfd_vma offset,
4756 asection **code_sec,
4757 bfd_vma *code_off)
4758{
4759 bfd *opd_bfd = opd_sec->owner;
8860955f 4760 Elf_Internal_Rela *relocs;
8387904d 4761 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4762 bfd_vma val;
8387904d 4763
4b85d634
AM		 4764 /* No relocs implies we are linking a --just-symbols object. */
4765 if (opd_sec->reloc_count == 0)
4766 {
4767 bfd_vma val;
4768
4769 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4770 return (bfd_vma) -1;
3b36f7e6 4771
4b85d634
AM		 4772 if (code_sec != NULL)
4773 {
4774 asection *sec, *likely = NULL;
4775 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4776 if (sec->vma <= val
4777 && (sec->flags & SEC_LOAD) != 0
4778 && (sec->flags & SEC_ALLOC) != 0)
4779 likely = sec;
4780 if (likely != NULL)
4781 {
4782 *code_sec = likely;
4783 if (code_off != NULL)
4784 *code_off = val - likely->vma;
4785 }
4786 }
4787 return val;
4788 }
4789
8860955f
AM		 4790 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4791 if (relocs == NULL)
4792 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4793
8387904d 4794 /* Go find the opd reloc at the sym address. */
8860955f 4795 lo = relocs;
8387904d
AM		 4796 BFD_ASSERT (lo != NULL);
4797 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4798 val = (bfd_vma) -1;
8387904d
AM		 4799 while (lo < hi)
4800 {
4801 look = lo + (hi - lo) / 2;
4802 if (look->r_offset < offset)
4803 lo = look + 1;
4804 else if (look->r_offset > offset)
4805 hi = look;
4806 else
4807 {
4808 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4809 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4810 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4811 {
4812 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4813 asection *sec;
4814
4815 if (symndx < symtab_hdr->sh_info)
4816 {
4817 Elf_Internal_Sym *sym;
4818
4819 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4820 if (sym == NULL)
4821 {
4822 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4823 symtab_hdr->sh_info,
4824 0, NULL, NULL, NULL);
4825 if (sym == NULL)
645ea6a9 4826 break;
8387904d
AM		 4827 symtab_hdr->contents = (bfd_byte *) sym;
4828 }
4829
4830 sym += symndx;
4831 val = sym->st_value;
4832 sec = NULL;
4833 if ((sym->st_shndx != SHN_UNDEF
4834 && sym->st_shndx < SHN_LORESERVE)
4835 || sym->st_shndx > SHN_HIRESERVE)
4836 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4837 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4838 }
4839 else
4840 {
4841 struct elf_link_hash_entry **sym_hashes;
4842 struct elf_link_hash_entry *rh;
4843
4844 sym_hashes = elf_sym_hashes (opd_bfd);
4845 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4846 while (rh->root.type == bfd_link_hash_indirect
4847 || rh->root.type == bfd_link_hash_warning)
4848 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4849 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4850 || rh->root.type == bfd_link_hash_defweak);
4851 val = rh->root.u.def.value;
4852 sec = rh->root.u.def.section;
4853 }
4854 val += look->r_addend;
4855 if (code_off != NULL)
4856 *code_off = val;
4857 if (code_sec != NULL)
4858 *code_sec = sec;
4859 if (sec != NULL && sec->output_section != NULL)
4860 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4861 }
4862 break;
4863 }
4864 }
645ea6a9 4865
645ea6a9 4866 return val;
8387904d
AM		 4867}
4868
5bd4f169
AM		 4869/* Return the section that should be marked against GC for a given
4870 relocation. */
4871
4872static asection *
4ce794b7 4873ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4874 struct bfd_link_info *info,
4ce794b7
AM		 4875 Elf_Internal_Rela *rel,
4876 struct elf_link_hash_entry *h,
4877 Elf_Internal_Sym *sym)
5bd4f169 4878{
ccfa59ea
AM		 4879 asection *rsec;
4880
4881 /* First mark all our entry sym sections. */
4882 if (info->gc_sym_list != NULL)
4883 {
4884 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4885 struct bfd_sym_chain *sym = info->gc_sym_list;
4886
4887 info->gc_sym_list = NULL;
4888 do
4889 {
4890 struct ppc_link_hash_entry *eh;
4891
4892 eh = (struct ppc_link_hash_entry *)
4893 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4894 if (eh == NULL)
4895 continue;
4896 if (eh->elf.root.type != bfd_link_hash_defined
4897 && eh->elf.root.type != bfd_link_hash_defweak)
4898 continue;
4899
c4f68ce3
AM		 4900 if (eh->is_func_descriptor
4901 && (eh->oh->elf.root.type == bfd_link_hash_defined
4902 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4903 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4904 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4905 && opd_entry_value (eh->elf.root.u.def.section,
4906 eh->elf.root.u.def.value,
4907 &rsec, NULL) != (bfd_vma) -1)
4908 ;
ccfa59ea
AM		 4909 else
4910 continue;
4911
4912 if (!rsec->gc_mark)
4913 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4914
4915 rsec = eh->elf.root.u.def.section;
4916 if (!rsec->gc_mark)
4917 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4918
4919 sym = sym->next;
4920 }
4921 while (sym != NULL);
4922 }
4923
4924 /* Syms return NULL if we're marking .opd, so we avoid marking all
4925 function sections, as all functions are referenced in .opd. */
4926 rsec = NULL;
4927 if (get_opd_info (sec) != NULL)
4928 return rsec;
1e2f5b6e 4929
5bd4f169
AM		 4930 if (h != NULL)
4931 {
04c9666a 4932 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4933 struct ppc_link_hash_entry *eh;
a33d1f77 4934
4ce794b7 4935 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4936 switch (r_type)
5bd4f169
AM		 4937 {
4938 case R_PPC64_GNU_VTINHERIT:
4939 case R_PPC64_GNU_VTENTRY:
4940 break;
4941
4942 default:
4943 switch (h->root.type)
4944 {
4945 case bfd_link_hash_defined:
4946 case bfd_link_hash_defweak:
ccfa59ea 4947 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 4948 if (eh->oh != NULL
4949 && eh->oh->is_func_descriptor
4950 && (eh->oh->elf.root.type == bfd_link_hash_defined
4951 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4952 eh = eh->oh;
1e2f5b6e
AM		 4953
4954 /* Function descriptor syms cause the associated
4955 function code sym section to be marked. */
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
AM		 4959 {
4960 /* They also mark their opd section. */
4961 if (!eh->elf.root.u.def.section->gc_mark)
4962 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4963 ppc64_elf_gc_mark_hook);
4964
4965 rsec = eh->oh->elf.root.u.def.section;
4966 }
8387904d
AM		 4967 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4968 && opd_entry_value (eh->elf.root.u.def.section,
4969 eh->elf.root.u.def.value,
4970 &rsec, NULL) != (bfd_vma) -1)
4971 {
4972 if (!eh->elf.root.u.def.section->gc_mark)
4973 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4974 ppc64_elf_gc_mark_hook);
4975 }
ccfa59ea 4976 else
1e2f5b6e
AM		 4977 rsec = h->root.u.def.section;
4978 break;
5bd4f169
AM		 4979
4980 case bfd_link_hash_common:
1e2f5b6e
AM		 4981 rsec = h->root.u.c.p->section;
4982 break;
5bd4f169
AM		 4983
4984 default:
4985 break;
4986 }
4987 }
4988 }
4989 else
4990 {
1e2f5b6e
AM		 4991 asection **opd_sym_section;
4992
4993 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 4994 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 4995 if (opd_sym_section != NULL)
ccfa59ea
AM		 4996 {
4997 if (!rsec->gc_mark)
4998 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4999
3f764659 5000 rsec = opd_sym_section[sym->st_value / 8];
ccfa59ea 5001 }
5bd4f169
AM		 5002 }
5003
1e2f5b6e 5004 return rsec;
5bd4f169
AM		 5005}
5006
65f38f15
AM		 5007/* Update the .got, .plt. and dynamic reloc reference counts for the
5008 section being removed. */
5bd4f169 5009
b34976b6 5010static bfd_boolean
4ce794b7
AM		 5011ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5012 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5013{
411e1bfb 5014 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5015 Elf_Internal_Shdr *symtab_hdr;
5016 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5017 struct got_entry **local_got_ents;
5bd4f169 5018 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5019
680a3378
AM		 5020 if ((sec->flags & SEC_ALLOC) == 0)
5021 return TRUE;
5022
ec338859
AM		 5023 elf_section_data (sec)->local_dynrel = NULL;
5024
411e1bfb 5025 htab = ppc_hash_table (info);
5bd4f169
AM		 5026 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5027 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5028 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5029
5030 relend = relocs + sec->reloc_count;
5031 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5032 {
5033 unsigned long r_symndx;
04c9666a 5034 enum elf_ppc64_reloc_type r_type;
58ac9f71 5035 struct elf_link_hash_entry *h = NULL;
411e1bfb 5036 char tls_type = 0;
5bd4f169 5037
a33d1f77 5038 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5039 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5040 if (r_symndx >= symtab_hdr->sh_info)
5041 {
5042 struct ppc_link_hash_entry *eh;
5043 struct ppc_dyn_relocs **pp;
5044 struct ppc_dyn_relocs *p;
5045
5046 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5047 while (h->root.type == bfd_link_hash_indirect
5048 || h->root.type == bfd_link_hash_warning)
5049 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5050 eh = (struct ppc_link_hash_entry *) h;
5051
5052 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5053 if (p->sec == sec)
5054 {
5055 /* Everything must go for SEC. */
5056 *pp = p->next;
5057 break;
5058 }
5059 }
5060
a33d1f77
AM		 5061 switch (r_type)
5062 {
411e1bfb
AM		 5063 case R_PPC64_GOT_TLSLD16:
5064 case R_PPC64_GOT_TLSLD16_LO:
5065 case R_PPC64_GOT_TLSLD16_HI:
5066 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5067 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5068 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5069 goto dogot;
5070
5071 case R_PPC64_GOT_TLSGD16:
5072 case R_PPC64_GOT_TLSGD16_LO:
5073 case R_PPC64_GOT_TLSGD16_HI:
5074 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5075 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5076 goto dogot;
5077
5078 case R_PPC64_GOT_TPREL16_DS:
5079 case R_PPC64_GOT_TPREL16_LO_DS:
5080 case R_PPC64_GOT_TPREL16_HI:
5081 case R_PPC64_GOT_TPREL16_HA:
5082 tls_type = TLS_TLS | TLS_TPREL;
5083 goto dogot;
5084
5085 case R_PPC64_GOT_DTPREL16_DS:
5086 case R_PPC64_GOT_DTPREL16_LO_DS:
5087 case R_PPC64_GOT_DTPREL16_HI:
5088 case R_PPC64_GOT_DTPREL16_HA:
5089 tls_type = TLS_TLS | TLS_DTPREL;
5090 goto dogot;
5091
a33d1f77
AM		 5092 case R_PPC64_GOT16:
5093 case R_PPC64_GOT16_DS:
5094 case R_PPC64_GOT16_HA:
5095 case R_PPC64_GOT16_HI:
5096 case R_PPC64_GOT16_LO:
5097 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5098 dogot:
5099 {
5100 struct got_entry *ent;
5101
58ac9f71
AM		 5102 if (h != NULL)
5103 ent = h->got.glist;
411e1bfb
AM		 5104 else
5105 ent = local_got_ents[r_symndx];
5106
5107 for (; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
e717da7e 5109 && ent->owner == abfd
411e1bfb
AM		 5110 && ent->tls_type == tls_type)
5111 break;
5112 if (ent == NULL)
5113 abort ();
5114 if (ent->got.refcount > 0)
5115 ent->got.refcount -= 1;
5116 }
a33d1f77 5117 break;
65f38f15 5118
a33d1f77
AM		 5119 case R_PPC64_PLT16_HA:
5120 case R_PPC64_PLT16_HI:
5121 case R_PPC64_PLT16_LO:
5122 case R_PPC64_PLT32:
5123 case R_PPC64_PLT64:
721956f4
AM		 5124 case R_PPC64_REL14:
5125 case R_PPC64_REL14_BRNTAKEN:
5126 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5127 case R_PPC64_REL24:
58ac9f71 5128 if (h != NULL)
5d1634d7 5129 {
411e1bfb
AM		 5130 struct plt_entry *ent;
5131
411e1bfb
AM		 5132 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5133 if (ent->addend == rel->r_addend)
5134 break;
5135 if (ent == NULL)
5136 abort ();
5137 if (ent->plt.refcount > 0)
5138 ent->plt.refcount -= 1;
5d1634d7 5139 }
e86ce104 5140 break;
5d1634d7 5141
a33d1f77
AM		 5142 default:
5143 break;
5144 }
5145 }
b34976b6 5146 return TRUE;
5bd4f169
AM		 5147}
5148
deb0e272
AM		 5149/* The maximum size of .sfpr. */
5150#define SFPR_MAX (218*4)
5151
5152struct sfpr_def_parms
5153{
699733f6
AM		 5154 const char name[12];
5155 unsigned char lo, hi;
deb0e272
AM		 5156 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5157 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5158};
5159
5160/* Auto-generate _save*, _rest* functions in .sfpr. */
5161
5162static unsigned int
5163sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5164{
5165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5166 unsigned int i;
5167 size_t len = strlen (parm->name);
5168 bfd_boolean writing = FALSE;
699733f6 5169 char sym[16];
deb0e272
AM		 5170
5171 memcpy (sym, parm->name, len);
5172 sym[len + 2] = 0;
5173
5174 for (i = parm->lo; i <= parm->hi; i++)
5175 {
5176 struct elf_link_hash_entry *h;
5177
5178 sym[len + 0] = i / 10 + '0';
5179 sym[len + 1] = i % 10 + '0';
5180 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5181 if (h != NULL
f5385ebf 5182 && !h->def_regular)
deb0e272
AM		 5183 {
5184 h->root.type = bfd_link_hash_defined;
5185 h->root.u.def.section = htab->sfpr;
5186 h->root.u.def.value = htab->sfpr->size;
5187 h->type = STT_FUNC;
f5385ebf 5188 h->def_regular = 1;
deb0e272
AM		 5189 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5190 writing = TRUE;
5191 if (htab->sfpr->contents == NULL)
5192 {
5193 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5194 if (htab->sfpr->contents == NULL)
5195 return FALSE;
5196 }
5197 }
5198 if (writing)
5199 {
5200 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5201 if (i != parm->hi)
5202 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5203 else
5204 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5205 htab->sfpr->size = p - htab->sfpr->contents;
5206 }
5207 }
5208
5209 return TRUE;
5210}
5211
5212static bfd_byte *
5213savegpr0 (bfd *abfd, bfd_byte *p, int r)
5214{
5215 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5216 return p + 4;
5217}
5218
5219static bfd_byte *
5220savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5221{
5222 p = savegpr0 (abfd, p, r);
5223 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5224 p = p + 4;
5225 bfd_put_32 (abfd, BLR, p);
5226 return p + 4;
5227}
5228
5229static bfd_byte *
5230restgpr0 (bfd *abfd, bfd_byte *p, int r)
5231{
5232 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5233 return p + 4;
5234}
5235
5236static bfd_byte *
5237restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5238{
5239 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5240 p = p + 4;
5241 p = restgpr0 (abfd, p, r);
5242 bfd_put_32 (abfd, MTLR_R0, p);
5243 p = p + 4;
5244 if (r == 29)
5245 {
5246 p = restgpr0 (abfd, p, 30);
5247 p = restgpr0 (abfd, p, 31);
5248 }
5249 bfd_put_32 (abfd, BLR, p);
5250 return p + 4;
5251}
5252
5253static bfd_byte *
5254savegpr1 (bfd *abfd, bfd_byte *p, int r)
5255{
5256 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5257 return p + 4;
5258}
5259
5260static bfd_byte *
5261savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5262{
5263 p = savegpr1 (abfd, p, r);
5264 bfd_put_32 (abfd, BLR, p);
5265 return p + 4;
5266}
5267
5268static bfd_byte *
5269restgpr1 (bfd *abfd, bfd_byte *p, int r)
5270{
5271 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5272 return p + 4;
5273}
5274
5275static bfd_byte *
5276restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5277{
5278 p = restgpr1 (abfd, p, r);
5279 bfd_put_32 (abfd, BLR, p);
5280 return p + 4;
5281}
5282
5283static bfd_byte *
5284savefpr (bfd *abfd, bfd_byte *p, int r)
5285{
5286 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5287 return p + 4;
5288}
5289
5290static bfd_byte *
5291savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5292{
5293 p = savefpr (abfd, p, r);
5294 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5295 p = p + 4;
5296 bfd_put_32 (abfd, BLR, p);
5297 return p + 4;
5298}
5299
5300static bfd_byte *
5301restfpr (bfd *abfd, bfd_byte *p, int r)
5302{
5303 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5304 return p + 4;
5305}
5306
5307static bfd_byte *
5308restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5309{
5310 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5311 p = p + 4;
5312 p = restfpr (abfd, p, r);
5313 bfd_put_32 (abfd, MTLR_R0, p);
5314 p = p + 4;
5315 if (r == 29)
5316 {
5317 p = restfpr (abfd, p, 30);
5318 p = restfpr (abfd, p, 31);
5319 }
5320 bfd_put_32 (abfd, BLR, p);
5321 return p + 4;
5322}
5323
5324static bfd_byte *
5325savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5326{
5327 p = savefpr (abfd, p, r);
5328 bfd_put_32 (abfd, BLR, p);
5329 return p + 4;
5330}
5331
5332static bfd_byte *
5333restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5334{
5335 p = restfpr (abfd, p, r);
5336 bfd_put_32 (abfd, BLR, p);
5337 return p + 4;
5338}
5339
5340static bfd_byte *
5341savevr (bfd *abfd, bfd_byte *p, int r)
5342{
5343 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5344 p = p + 4;
5345 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5346 return p + 4;
5347}
5348
5349static bfd_byte *
5350savevr_tail (bfd *abfd, bfd_byte *p, int r)
5351{
5352 p = savevr (abfd, p, r);
5353 bfd_put_32 (abfd, BLR, p);
5354 return p + 4;
5355}
5356
5357static bfd_byte *
5358restvr (bfd *abfd, bfd_byte *p, int r)
5359{
5360 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5361 p = p + 4;
5362 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5363 return p + 4;
5364}
5365
5366static bfd_byte *
5367restvr_tail (bfd *abfd, bfd_byte *p, int r)
5368{
5369 p = restvr (abfd, p, r);
5370 bfd_put_32 (abfd, BLR, p);
5371 return p + 4;
5372}
5373
e86ce104
AM		 5374/* Called via elf_link_hash_traverse to transfer dynamic linking
5375 information on function code symbol entries to their corresponding
5376 function descriptor symbol entries. */
deb0e272 5377
b34976b6 5378static bfd_boolean
4ce794b7 5379func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5380{
e86ce104 5381 struct bfd_link_info *info;
65f38f15 5382 struct ppc_link_hash_table *htab;
411e1bfb 5383 struct plt_entry *ent;
50bc7936
AM		 5384 struct ppc_link_hash_entry *fh;
5385 struct ppc_link_hash_entry *fdh;
5386 bfd_boolean force_local;
5bd4f169 5387
50bc7936
AM		 5388 fh = (struct ppc_link_hash_entry *) h;
5389 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5390 return TRUE;
e86ce104 5391
50bc7936
AM		 5392 if (fh->elf.root.type == bfd_link_hash_warning)
5393 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5394
4ce794b7 5395 info = inf;
65f38f15 5396 htab = ppc_hash_table (info);
5bd4f169 5397
c09bdfe5
AM		 5398 /* Resolve undefined references to dot-symbols as the value
5399 in the function descriptor, if we have one in a regular object.
5400 This is to satisfy cases like ".quad .foo". Calls to functions
5401 in dynamic objects are handled elsewhere. */
5402 if (fh->elf.root.type == bfd_link_hash_undefweak
5403 && fh->was_undefined
5404 && (fh->oh->elf.root.type == bfd_link_hash_defined
5405 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5406 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5407 && opd_entry_value (fh->oh->elf.root.u.def.section,
5408 fh->oh->elf.root.u.def.value,
5409 &fh->elf.root.u.def.section,
5410 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5411 {
5412 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5413 fh->elf.forced_local = 1;
c09bdfe5
AM		 5414 }
5415
e86ce104
AM		 5416 /* If this is a function code symbol, transfer dynamic linking
5417 information to the function descriptor symbol. */
50bc7936 5418 if (!fh->is_func)
b34976b6 5419 return TRUE;
e86ce104 5420
50bc7936 5421 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5422 if (ent->plt.refcount > 0)
5423 break;
50bc7936
AM		 5424 if (ent == NULL
5425 || fh->elf.root.root.string[0] != '.'
5426 || fh->elf.root.root.string[1] == '\0')
5427 return TRUE;
5bd4f169 5428
50bc7936
AM		 5429 /* Find the corresponding function descriptor symbol. Create it
5430 as undefined if necessary. */
5bd4f169 5431
50bc7936
AM		 5432 fdh = get_fdh (fh, htab);
5433 if (fdh != NULL)
5434 while (fdh->elf.root.type == bfd_link_hash_indirect
5435 || fdh->elf.root.type == bfd_link_hash_warning)
5436 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5437
50bc7936
AM		 5438 if (fdh == NULL
5439 && info->shared
5440 && (fh->elf.root.type == bfd_link_hash_undefined
5441 || fh->elf.root.type == bfd_link_hash_undefweak))
5442 {
908b32fc 5443 fdh = make_fdh (info, fh);
bb700d78
AM		 5444 if (fdh == NULL)
5445 return FALSE;
50bc7936 5446 }
648cca2c 5447
908b32fc
AM		 5448 /* Fake function descriptors are made undefweak. If the function
5449 code symbol is strong undefined, make the fake sym the same. */
5450
5451 if (fdh != NULL
5452 && fdh->fake
5453 && fdh->elf.root.type == bfd_link_hash_undefweak
5454 && fh->elf.root.type == bfd_link_hash_undefined)
5455 {
5456 fdh->elf.root.type = bfd_link_hash_undefined;
5457 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5458 }
5459
50bc7936 5460 if (fdh != NULL
f5385ebf 5461 && !fdh->elf.forced_local
50bc7936 5462 && (info->shared
f5385ebf
AM		 5463 || fdh->elf.def_dynamic
5464 || fdh->elf.ref_dynamic
50bc7936
AM		 5465 || (fdh->elf.root.type == bfd_link_hash_undefweak
5466 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5467 {
5468 if (fdh->elf.dynindx == -1)
c152c796 5469 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5470 return FALSE;
f5385ebf
AM		 5471 fdh->elf.ref_regular |= fh->elf.ref_regular;
5472 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5473 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5474 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5475 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5476 {
40d16e0b 5477 move_plt_plist (fh, fdh);
f5385ebf 5478 fdh->elf.needs_plt = 1;
e86ce104 5479 }
50bc7936 5480 fdh->is_func_descriptor = 1;
34814b9f
AM		 5481 fdh->oh = fh;
5482 fh->oh = fdh;
e86ce104
AM		 5483 }
5484
50bc7936
AM		 5485 /* Now that the info is on the function descriptor, clear the
5486 function code sym info. Any function code syms for which we
5487 don't have a definition in a regular file, we force local.
5488 This prevents a shared library from exporting syms that have
5489 been imported from another library. Function code syms that
5490 are really in the library we must leave global to prevent the
5491 linker dragging in a definition from a static library. */
93f3fa99
AM		 5492 force_local = (!fh->elf.def_regular
5493 || fdh == NULL
5494 || !fdh->elf.def_regular
5495 || fdh->elf.forced_local);
50bc7936
AM		 5496 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5497
b34976b6 5498 return TRUE;
e86ce104 5499}
40b8271b 5500
e86ce104 5501/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5502 this hook to a) provide some gcc support functions, and b) transfer
5503 dynamic linking information gathered so far on function code symbol
5504 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5505
b34976b6 5506static bfd_boolean
4ce794b7
AM		 5507ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5508 struct bfd_link_info *info)
e86ce104
AM		 5509{
5510 struct ppc_link_hash_table *htab;
82bd7b59 5511 unsigned int i;
deb0e272
AM		 5512 const struct sfpr_def_parms funcs[] =
5513 {
5514 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5515 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5516 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5517 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5518 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5519 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5520 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5521 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5522 { "._savef", 14, 31, savefpr, savefpr1_tail },
5523 { "._restf", 14, 31, restfpr, restfpr1_tail },
5524 { "_savevr_", 20, 31, savevr, savevr_tail },
5525 { "_restvr_", 20, 31, restvr, restvr_tail }
5526 };
e86ce104
AM		 5527
5528 htab = ppc_hash_table (info);
82bd7b59
AM		 5529 if (htab->sfpr == NULL)
5530 /* We don't have any relocs. */
b34976b6 5531 return TRUE;
82bd7b59 5532
deb0e272
AM		 5533 /* Provide any missing _save* and _rest* functions. */
5534 htab->sfpr->size = 0;
5535 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5536 if (!sfpr_define (info, &funcs[i]))
5537 return FALSE;
82bd7b59 5538
4ce794b7 5539 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5540
eea6121a 5541 if (htab->sfpr->size == 0)
8423293d 5542 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5543
b34976b6 5544 return TRUE;
e86ce104
AM		 5545}
5546
5547/* Adjust a symbol defined by a dynamic object and referenced by a
5548 regular object. The current definition is in some section of the
5549 dynamic object, but we're not including those sections. We have to
5550 change the definition to something the rest of the link can
5551 understand. */
5552
b34976b6 5553static bfd_boolean
4ce794b7
AM		 5554ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5555 struct elf_link_hash_entry *h)
e86ce104
AM		 5556{
5557 struct ppc_link_hash_table *htab;
e86ce104
AM		 5558 asection *s;
5559 unsigned int power_of_two;
5560
5561 htab = ppc_hash_table (info);
5562
5563 /* Deal with function syms. */
5564 if (h->type == STT_FUNC
f5385ebf 5565 || h->needs_plt)
e86ce104
AM		 5566 {
5567 /* Clear procedure linkage table information for any symbol that
5568 won't need a .plt entry. */
411e1bfb
AM		 5569 struct plt_entry *ent;
5570 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5571 if (ent->plt.refcount > 0)
5572 break;
8387904d 5573 if (ent == NULL
9c7a29a3
AM		 5574 || SYMBOL_CALLS_LOCAL (info, h)
5575 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5576 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5577 {
411e1bfb 5578 h->plt.plist = NULL;
f5385ebf 5579 h->needs_plt = 0;
40b8271b 5580 }
5bd4f169 5581 }
bbd7ec4a 5582 else
411e1bfb 5583 h->plt.plist = NULL;
5bd4f169
AM		 5584
5585 /* If this is a weak symbol, and there is a real definition, the
5586 processor independent code will have arranged for us to see the
5587 real definition first, and we can just use the same value. */
f6e332e6 5588 if (h->u.weakdef != NULL)
5bd4f169 5589 {
f6e332e6
AM		 5590 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5591 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5592 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5593 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5594 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5595 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5596 return TRUE;
5bd4f169
AM		 5597 }
5598
5bd4f169
AM		 5599 /* If we are creating a shared library, we must presume that the
5600 only references to the symbol are via the global offset table.
5601 For such cases we need not do anything here; the relocations will
5602 be handled correctly by relocate_section. */
5603 if (info->shared)
b34976b6 5604 return TRUE;
5bd4f169 5605
65f38f15
AM		 5606 /* If there are no references to this symbol that do not use the
5607 GOT, we don't need to generate a copy reloc. */
f5385ebf 5608 if (!h->non_got_ref)
b34976b6 5609 return TRUE;
65f38f15 5610
f4656909 5611 if (ELIMINATE_COPY_RELOCS)
65f38f15 5612 {
f4656909
AM		 5613 struct ppc_link_hash_entry * eh;
5614 struct ppc_dyn_relocs *p;
65f38f15 5615
f4656909
AM		 5616 eh = (struct ppc_link_hash_entry *) h;
5617 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5618 {
5619 s = p->sec->output_section;
5620 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5621 break;
5622 }
5623
5624 /* If we didn't find any dynamic relocs in read-only sections, then
5625 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5626 if (p == NULL)
5627 {
f5385ebf 5628 h->non_got_ref = 0;
f4656909
AM		 5629 return TRUE;
5630 }
65f38f15
AM		 5631 }
5632
5d35169e 5633 if (h->plt.plist != NULL)
97b639ba
AM		 5634 {
5635 /* We should never get here, but unfortunately there are versions
5636 of gcc out there that improperly (for this ABI) put initialized
5637 function pointers, vtable refs and suchlike in read-only
5638 sections. Allow them to proceed, but warn that this might
5639 break at runtime. */
5640 (*_bfd_error_handler)
5641 (_("copy reloc against `%s' requires lazy plt linking; "
5642 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5643 h->root.root.string);
5644 }
5d35169e
AM		 5645
5646 /* This is a reference to a symbol defined by a dynamic object which
5647 is not a function. */
5648
5bd4f169
AM		 5649 /* We must allocate the symbol in our .dynbss section, which will
5650 become part of the .bss section of the executable. There will be
5651 an entry for this symbol in the .dynsym section. The dynamic
5652 object will contain position independent code, so all references
5653 from the dynamic object to this symbol will go through the global
5654 offset table. The dynamic linker will use the .dynsym entry to
5655 determine the address it must put in the global offset table, so
5656 both the dynamic object and the regular object will refer to the
5657 same memory location for the variable. */
5bd4f169 5658
04c9666a
AM		 5659 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5660 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5661 runtime process image. We need to remember the offset into the
5662 .rela.bss section we are going to use. */
5663 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5664 {
eea6121a 5665 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5666 h->needs_copy = 1;
5bd4f169
AM		 5667 }
5668
5669 /* We need to figure out the alignment required for this symbol. I
5670 have no idea how ELF linkers handle this. */
5671 power_of_two = bfd_log2 (h->size);
5672 if (power_of_two > 4)
5673 power_of_two = 4;
5674
5675 /* Apply the required alignment. */
4ce794b7 5676 s = htab->dynbss;
eea6121a 5677 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5678 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5679 {
65f38f15 5680 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5681 return FALSE;
5bd4f169
AM		 5682 }
5683
5684 /* Define the symbol as being at this point in the section. */
5685 h->root.u.def.section = s;
eea6121a 5686 h->root.u.def.value = s->size;
5bd4f169
AM		 5687
5688 /* Increment the section size to make room for the symbol. */
eea6121a 5689 s->size += h->size;
5bd4f169 5690
b34976b6 5691 return TRUE;
5bd4f169
AM		 5692}
5693
e86ce104
AM		 5694/* If given a function descriptor symbol, hide both the function code
5695 sym and the descriptor. */
5696static void
4ce794b7
AM		 5697ppc64_elf_hide_symbol (struct bfd_link_info *info,
5698 struct elf_link_hash_entry *h,
5699 bfd_boolean force_local)
e86ce104 5700{
34814b9f 5701 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5702 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5703
34814b9f
AM		 5704 eh = (struct ppc_link_hash_entry *) h;
5705 if (eh->is_func_descriptor)
e86ce104 5706 {
34814b9f 5707 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5708
721956f4 5709 if (fh == NULL)
d1329ca3
AM		 5710 {
5711 const char *p, *q;
5712 struct ppc_link_hash_table *htab;
5713 char save;
5714
5715 /* We aren't supposed to use alloca in BFD because on
5716 systems which do not have alloca the version in libiberty
5717 calls xmalloc, which might cause the program to crash
5718 when it runs out of memory. This function doesn't have a
5719 return status, so there's no way to gracefully return an
5720 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5721 accessed; It's either a string in an ELF string table,
5722 or allocated in an objalloc structure. */
d1329ca3 5723
34814b9f 5724 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5725 save = *p;
5726 *(char *) p = '.';
5727 htab = ppc_hash_table (info);
34814b9f
AM		 5728 fh = (struct ppc_link_hash_entry *)
5729 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5730 *(char *) p = save;
5731
5732 /* Unfortunately, if it so happens that the string we were
5733 looking for was allocated immediately before this string,
5734 then we overwrote the string terminator. That's the only
5735 reason the lookup should fail. */
5736 if (fh == NULL)
5737 {
34814b9f
AM		 5738 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5739 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5740 --q, --p;
34814b9f
AM		 5741 if (q < eh->elf.root.root.string && *p == '.')
5742 fh = (struct ppc_link_hash_entry *)
5743 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5744 }
5745 if (fh != NULL)
5746 {
34814b9f
AM		 5747 eh->oh = fh;
5748 fh->oh = eh;
d1329ca3
AM		 5749 }
5750 }
e86ce104 5751 if (fh != NULL)
34814b9f 5752 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5753 }
5754}
5755
411e1bfb 5756static bfd_boolean
8843416a
AM		 5757get_sym_h (struct elf_link_hash_entry **hp,
5758 Elf_Internal_Sym **symp,
5759 asection **symsecp,
5760 char **tls_maskp,
5761 Elf_Internal_Sym **locsymsp,
5762 unsigned long r_symndx,
5763 bfd *ibfd)
411e1bfb
AM		 5764{
5765 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5766
5767 if (r_symndx >= symtab_hdr->sh_info)
5768 {
5769 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5770 struct elf_link_hash_entry *h;
5771
5772 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5773 while (h->root.type == bfd_link_hash_indirect
5774 || h->root.type == bfd_link_hash_warning)
5775 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5776
5777 if (hp != NULL)
5778 *hp = h;
5779
5780 if (symp != NULL)
5781 *symp = NULL;
5782
5783 if (symsecp != NULL)
5784 {
5785 asection *symsec = NULL;
5786 if (h->root.type == bfd_link_hash_defined
5787 || h->root.type == bfd_link_hash_defweak)
5788 symsec = h->root.u.def.section;
5789 *symsecp = symsec;
5790 }
5791
e7b938ca 5792 if (tls_maskp != NULL)
411e1bfb
AM		 5793 {
5794 struct ppc_link_hash_entry *eh;
5795
5796 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5797 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5798 }
5799 }
5800 else
5801 {
5802 Elf_Internal_Sym *sym;
5803 Elf_Internal_Sym *locsyms = *locsymsp;
5804
5805 if (locsyms == NULL)
5806 {
5807 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5808 if (locsyms == NULL)
5809 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5810 symtab_hdr->sh_info,
5811 0, NULL, NULL, NULL);
5812 if (locsyms == NULL)
5813 return FALSE;
5814 *locsymsp = locsyms;
5815 }
5816 sym = locsyms + r_symndx;
5817
5818 if (hp != NULL)
5819 *hp = NULL;
5820
5821 if (symp != NULL)
5822 *symp = sym;
5823
5824 if (symsecp != NULL)
5825 {
5826 asection *symsec = NULL;
5827 if ((sym->st_shndx != SHN_UNDEF
5828 && sym->st_shndx < SHN_LORESERVE)
5829 || sym->st_shndx > SHN_HIRESERVE)
5830 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5831 *symsecp = symsec;
5832 }
5833
e7b938ca 5834 if (tls_maskp != NULL)
411e1bfb
AM		 5835 {
5836 struct got_entry **lgot_ents;
e7b938ca 5837 char *tls_mask;
411e1bfb 5838
e7b938ca 5839 tls_mask = NULL;
411e1bfb
AM		 5840 lgot_ents = elf_local_got_ents (ibfd);
5841 if (lgot_ents != NULL)
5842 {
e7b938ca
AM		 5843 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5844 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5845 }
e7b938ca 5846 *tls_maskp = tls_mask;
411e1bfb
AM		 5847 }
5848 }
5849 return TRUE;
5850}
5851
e7b938ca 5852/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5853 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5854 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5855
5856static int
0d4792f7
AM		 5857get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5858 Elf_Internal_Sym **locsymsp,
4ce794b7 5859 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5860{
5861 unsigned long r_symndx;
0d4792f7 5862 int next_r;
411e1bfb
AM		 5863 struct elf_link_hash_entry *h;
5864 Elf_Internal_Sym *sym;
5865 asection *sec;
5866 bfd_vma off;
5867
5868 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5869 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5870 return 0;
411e1bfb 5871
e7b938ca 5872 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5873 || sec == NULL
5874 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5875 return 1;
411e1bfb
AM		 5876
5877 /* Look inside a TOC section too. */
5878 if (h != NULL)
5879 {
5880 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5881 off = h->root.u.def.value;
5882 }
5883 else
5884 off = sym->st_value;
5885 off += rel->r_addend;
5886 BFD_ASSERT (off % 8 == 0);
5887 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5888 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5889 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5890 return 0;
0d4792f7
AM		 5891 if (toc_symndx != NULL)
5892 *toc_symndx = r_symndx;
5893 if ((h == NULL
5894 || ((h->root.type == bfd_link_hash_defined
5895 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5896 && !h->def_dynamic))
0d4792f7
AM		 5897 && (next_r == -1 || next_r == -2))
5898 return 1 - next_r;
951fd09b 5899 return 1;
411e1bfb
AM		 5900}
5901
754021d0 5902/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5903 code for the old ABI, these will already have been done. */
754021d0
AM		 5904
5905static bfd_boolean
5906adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5907{
5908 struct ppc_link_hash_entry *eh;
5909 asection *sym_sec;
5910 long *opd_adjust;
5911
5912 if (h->root.type == bfd_link_hash_indirect)
5913 return TRUE;
5914
5915 if (h->root.type == bfd_link_hash_warning)
5916 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5917
5918 if (h->root.type != bfd_link_hash_defined
5919 && h->root.type != bfd_link_hash_defweak)
5920 return TRUE;
5921
5922 eh = (struct ppc_link_hash_entry *) h;
5923 if (eh->adjust_done)
5924 return TRUE;
5925
5926 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 5927 opd_adjust = get_opd_info (sym_sec);
5928 if (opd_adjust != NULL)
754021d0 5929 {
3f764659 5930 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 5931 if (adjust == -1)
5932 {
5933 /* This entry has been deleted. */
81688140
AM		 5934 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5935 if (dsec == NULL)
5936 {
5937 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5938 if (elf_discarded_section (dsec))
5939 {
5940 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5941 break;
5942 }
5943 }
4025353c 5944 eh->elf.root.u.def.value = 0;
81688140 5945 eh->elf.root.u.def.section = dsec;
4025353c
AM		 5946 }
5947 else
5948 eh->elf.root.u.def.value += adjust;
754021d0
AM		 5949 eh->adjust_done = 1;
5950 }
5951 return TRUE;
5952}
5953
8c1d1bb8
AM		 5954/* Handles decrementing dynamic reloc counts for the reloc specified by
5955 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
5956 have already been determined. */
5957
5958static bfd_boolean
5959dec_dynrel_count (bfd_vma r_info,
5960 asection *sec,
5961 struct bfd_link_info *info,
5962 Elf_Internal_Sym **local_syms,
5963 struct elf_link_hash_entry *h,
5964 asection *sym_sec)
5965{
5966 enum elf_ppc64_reloc_type r_type;
5967 struct ppc_dyn_relocs *p;
5968 struct ppc_dyn_relocs **pp;
5969
5970 /* Can this reloc be dynamic? This switch, and later tests here
5971 should be kept in sync with the code in check_relocs. */
5972 r_type = ELF64_R_TYPE (r_info);
5973 switch (r_type)
5974 {
5975 default:
5976 return TRUE;
5977
5978 case R_PPC64_TPREL16:
5979 case R_PPC64_TPREL16_LO:
5980 case R_PPC64_TPREL16_HI:
5981 case R_PPC64_TPREL16_HA:
5982 case R_PPC64_TPREL16_DS:
5983 case R_PPC64_TPREL16_LO_DS:
5984 case R_PPC64_TPREL16_HIGHER:
5985 case R_PPC64_TPREL16_HIGHERA:
5986 case R_PPC64_TPREL16_HIGHEST:
5987 case R_PPC64_TPREL16_HIGHESTA:
5988 if (!info->shared)
5989 return TRUE;
5990
5991 case R_PPC64_TPREL64:
5992 case R_PPC64_DTPMOD64:
5993 case R_PPC64_DTPREL64:
5994 case R_PPC64_ADDR64:
5995 case R_PPC64_REL30:
5996 case R_PPC64_REL32:
5997 case R_PPC64_REL64:
5998 case R_PPC64_ADDR14:
5999 case R_PPC64_ADDR14_BRNTAKEN:
6000 case R_PPC64_ADDR14_BRTAKEN:
6001 case R_PPC64_ADDR16:
6002 case R_PPC64_ADDR16_DS:
6003 case R_PPC64_ADDR16_HA:
6004 case R_PPC64_ADDR16_HI:
6005 case R_PPC64_ADDR16_HIGHER:
6006 case R_PPC64_ADDR16_HIGHERA:
6007 case R_PPC64_ADDR16_HIGHEST:
6008 case R_PPC64_ADDR16_HIGHESTA:
6009 case R_PPC64_ADDR16_LO:
6010 case R_PPC64_ADDR16_LO_DS:
6011 case R_PPC64_ADDR24:
6012 case R_PPC64_ADDR32:
6013 case R_PPC64_UADDR16:
6014 case R_PPC64_UADDR32:
6015 case R_PPC64_UADDR64:
6016 case R_PPC64_TOC:
6017 break;
6018 }
6019
6020 if (local_syms != NULL)
6021 {
6022 unsigned long r_symndx;
6023 Elf_Internal_Sym *sym;
6024 bfd *ibfd = sec->owner;
6025
6026 r_symndx = ELF64_R_SYM (r_info);
6027 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6028 return FALSE;
6029 }
6030
6031 if ((info->shared
6032 && (MUST_BE_DYN_RELOC (r_type)
6033 || (h != NULL
6034 && (!info->symbolic
6035 || h->root.type == bfd_link_hash_defweak
6036 || !h->def_regular))))
6037 || (ELIMINATE_COPY_RELOCS
6038 && !info->shared
6039 && h != NULL
6040 && (h->root.type == bfd_link_hash_defweak
6041 || !h->def_regular)))
6042 ;
6043 else
6044 return TRUE;
6045
6046 if (h != NULL)
6047 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6048 else if (sym_sec != NULL)
6049 pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel;
6050 else
6051 pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel;
6052
6053 while ((p = *pp) != NULL)
6054 {
6055 if (p->sec == sec)
6056 {
6057 if (!MUST_BE_DYN_RELOC (r_type))
6058 p->pc_count -= 1;
6059 p->count -= 1;
6060 if (p->count == 0)
6061 *pp = p->next;
6062 return TRUE;
6063 }
6064 pp = &p->next;
6065 }
6066
6067 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6068 sec->owner, sec);
6069 bfd_set_error (bfd_error_bad_value);
6070 return FALSE;
6071}
6072
754021d0
AM		 6073/* Remove unused Official Procedure Descriptor entries. Currently we
6074 only remove those associated with functions in discarded link-once
6075 sections, or weakly defined functions that have been overridden. It
6076 would be possible to remove many more entries for statically linked
6077 applications. */
6078
b34976b6 6079bfd_boolean
3f764659
JJ		 6080ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6081 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6082{
6083 bfd *ibfd;
754021d0 6084 bfd_boolean some_edited = FALSE;
3f764659 6085 asection *need_pad = NULL;
1e2f5b6e 6086
411e1bfb 6087 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6088 {
6089 asection *sec;
6090 Elf_Internal_Rela *relstart, *rel, *relend;
6091 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6092 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6093 struct elf_link_hash_entry **sym_hashes;
6094 bfd_vma offset;
d6fe2dc1 6095 bfd_size_type amt;
4025353c 6096 long *opd_adjust;
3f764659
JJ		 6097 bfd_boolean need_edit, add_aux_fields;
6098 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6099
6100 sec = bfd_get_section_by_name (ibfd, ".opd");
6101 if (sec == NULL)
6102 continue;
6103
3f764659 6104 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6105 opd_adjust = get_opd_info (sec);
6106 if (opd_adjust == NULL)
d6fe2dc1 6107 {
4b85d634
AM		 6108 /* check_relocs hasn't been called. Must be a ld -r link
6109 or --just-symbols object. */
4025353c
AM		 6110 opd_adjust = bfd_zalloc (obfd, amt);
6111 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 6112 }
4025353c 6113 memset (opd_adjust, 0, amt);
1e2f5b6e 6114
4b85d634
AM		 6115 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6116 continue;
6117
1e2f5b6e
AM		 6118 if (sec->output_section == bfd_abs_section_ptr)
6119 continue;
6120
6121 /* Look through the section relocs. */
6122 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6123 continue;
6124
6cdc0ccc 6125 local_syms = NULL;
1e2f5b6e
AM		 6126 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6127 sym_hashes = elf_sym_hashes (ibfd);
6128
6129 /* Read the relocations. */
4ce794b7 6130 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6131 info->keep_memory);
1e2f5b6e 6132 if (relstart == NULL)
b34976b6 6133 return FALSE;
1e2f5b6e
AM		 6134
6135 /* First run through the relocs to check they are sane, and to
6136 determine whether we need to edit this opd section. */
b34976b6 6137 need_edit = FALSE;
3f764659 6138 need_pad = sec;
1e2f5b6e
AM		 6139 offset = 0;
6140 relend = relstart + sec->reloc_count;
50bc7936 6141 for (rel = relstart; rel < relend; )
1e2f5b6e 6142 {
04c9666a 6143 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6144 unsigned long r_symndx;
6145 asection *sym_sec;
6146 struct elf_link_hash_entry *h;
6147 Elf_Internal_Sym *sym;
6148
3f764659 6149 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6150 only interested in the reloc pointing to a function entry
6151 point. */
50bc7936
AM		 6152 if (rel->r_offset != offset
6153 || rel + 1 >= relend
6154 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6155 {
6156 /* If someone messes with .opd alignment then after a
6157 "ld -r" we might have padding in the middle of .opd.
6158 Also, there's nothing to prevent someone putting
6159 something silly in .opd with the assembler. No .opd
b34976b6 6160 optimization for them! */
3f764659 6161 broken_opd:
1e2f5b6e 6162 (*_bfd_error_handler)
d003868e 6163 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6164 need_edit = FALSE;
1e2f5b6e
AM		 6165 break;
6166 }
6167
50bc7936
AM		 6168 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6169 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6170 {
6171 (*_bfd_error_handler)
d003868e
AM		 6172 (_("%B: unexpected reloc type %u in .opd section"),
6173 ibfd, r_type);
50bc7936
AM		 6174 need_edit = FALSE;
6175 break;
6176 }
6177
1e2f5b6e 6178 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6179 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6180 r_symndx, ibfd))
50bc7936 6181 goto error_ret;
1e2f5b6e
AM		 6182
6183 if (sym_sec == NULL || sym_sec->owner == NULL)
6184 {
411e1bfb
AM		 6185 const char *sym_name;
6186 if (h != NULL)
6187 sym_name = h->root.root.string;
6188 else
26c61ae5
L		 6189 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6190 sym_sec);
411e1bfb 6191
1e2f5b6e 6192 (*_bfd_error_handler)
d003868e
AM		 6193 (_("%B: undefined sym `%s' in .opd section"),
6194 ibfd, sym_name);
b34976b6 6195 need_edit = FALSE;
1e2f5b6e
AM		 6196 break;
6197 }
6198
51020317
AM		 6199 /* opd entries are always for functions defined in the
6200 current input bfd. If the symbol isn't defined in the
6201 input bfd, then we won't be using the function in this
6202 bfd; It must be defined in a linkonce section in another
6203 bfd, or is weak. It's also possible that we are
6204 discarding the function due to a linker script /DISCARD/,
6205 which we test for via the output_section. */
6206 if (sym_sec->owner != ibfd
6207 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6208 need_edit = TRUE;
1e2f5b6e 6209
50bc7936 6210 rel += 2;
3f764659
JJ		 6211 if (rel == relend
6212 || (rel + 1 == relend && rel->r_offset == offset + 16))
6213 {
6214 if (sec->size == offset + 24)
6215 {
6216 need_pad = NULL;
6217 break;
6218 }
6219 if (rel == relend && sec->size == offset + 16)
6220 {
6221 cnt_16b++;
6222 break;
6223 }
6224 goto broken_opd;
6225 }
6226
6227 if (rel->r_offset == offset + 24)
6228 offset += 24;
6229 else if (rel->r_offset != offset + 16)
6230 goto broken_opd;
6231 else if (rel + 1 < relend
6232 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6233 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6234 {
6235 offset += 16;
6236 cnt_16b++;
6237 }
6238 else if (rel + 2 < relend
6239 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6240 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6241 {
6242 offset += 24;
6243 rel += 1;
6244 }
6245 else
6246 goto broken_opd;
1e2f5b6e
AM		 6247 }
6248
3f764659
JJ		 6249 add_aux_fields = non_overlapping && cnt_16b > 0;
6250
6251 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6252 {
6253 Elf_Internal_Rela *write_rel;
6254 bfd_byte *rptr, *wptr;
3f764659 6255 bfd_byte *new_contents = NULL;
b34976b6 6256 bfd_boolean skip;
3f764659 6257 long opd_ent_size;
1e2f5b6e
AM		 6258
6259 /* This seems a waste of time as input .opd sections are all
6260 zeros as generated by gcc, but I suppose there's no reason
6261 this will always be so. We might start putting something in
6262 the third word of .opd entries. */
6263 if ((sec->flags & SEC_IN_MEMORY) == 0)
6264 {
eea6121a
AM		 6265 bfd_byte *loc;
6266 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6267 {
eea6121a
AM		 6268 if (loc != NULL)
6269 free (loc);
50bc7936 6270 error_ret:
6cdc0ccc
AM		 6271 if (local_syms != NULL
6272 && symtab_hdr->contents != (unsigned char *) local_syms)
6273 free (local_syms);
6cdc0ccc
AM		 6274 if (elf_section_data (sec)->relocs != relstart)
6275 free (relstart);
b34976b6 6276 return FALSE;
6cdc0ccc 6277 }
1e2f5b6e
AM		 6278 sec->contents = loc;
6279 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6280 }
6281
6282 elf_section_data (sec)->relocs = relstart;
6283
6284 wptr = sec->contents;
6285 rptr = sec->contents;
3f764659
JJ		 6286 new_contents = sec->contents;
6287
6288 if (add_aux_fields)
6289 {
6290 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6291 if (new_contents == NULL)
6292 return FALSE;
6293 need_pad = FALSE;
6294 wptr = new_contents;
6295 }
6296
1e2f5b6e 6297 write_rel = relstart;
b34976b6 6298 skip = FALSE;
1e2f5b6e 6299 offset = 0;
3f764659 6300 opd_ent_size = 0;
1e2f5b6e
AM		 6301 for (rel = relstart; rel < relend; rel++)
6302 {
50bc7936
AM		 6303 unsigned long r_symndx;
6304 asection *sym_sec;
6305 struct elf_link_hash_entry *h;
6306 Elf_Internal_Sym *sym;
6307
6308 r_symndx = ELF64_R_SYM (rel->r_info);
6309 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6310 r_symndx, ibfd))
50bc7936
AM		 6311 goto error_ret;
6312
1e2f5b6e
AM		 6313 if (rel->r_offset == offset)
6314 {
50bc7936 6315 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6316
6317 /* See if the .opd entry is full 24 byte or
6318 16 byte (with fd_aux entry overlapped with next
6319 fd_func). */
6320 opd_ent_size = 24;
6321 if ((rel + 2 == relend && sec->size == offset + 16)
6322 || (rel + 3 < relend
6323 && rel[2].r_offset == offset + 16
6324 && rel[3].r_offset == offset + 24
6325 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6326 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6327 opd_ent_size = 16;
6328
4025353c
AM		 6329 if (h != NULL
6330 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6331 {
6332 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6333 ppc_hash_table (info));
6334 if (fdh != NULL
6335 && fdh->elf.root.type != bfd_link_hash_defined
6336 && fdh->elf.root.type != bfd_link_hash_defweak)
6337 fdh = NULL;
6338 }
1e2f5b6e 6339
51020317
AM		 6340 skip = (sym_sec->owner != ibfd
6341 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6342 if (skip)
6343 {
4025353c 6344 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6345 {
6346 /* Arrange for the function descriptor sym
6347 to be dropped. */
d6fe2dc1
AM		 6348 fdh->elf.root.u.def.value = 0;
6349 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6350 }
3f764659 6351 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6352 }
6353 else
1e2f5b6e
AM		 6354 {
6355 /* We'll be keeping this opd entry. */
6356
4025353c 6357 if (fdh != NULL)
1e2f5b6e 6358 {
754021d0
AM		 6359 /* Redefine the function descriptor symbol to
6360 this location in the opd section. It is
6361 necessary to update the value here rather
6362 than using an array of adjustments as we do
6363 for local symbols, because various places
6364 in the generic ELF code use the value
6365 stored in u.def.value. */
3f764659 6366 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6367 fdh->adjust_done = 1;
1e2f5b6e 6368 }
754021d0
AM		 6369
6370 /* Local syms are a bit tricky. We could
6371 tweak them as they can be cached, but
6372 we'd need to look through the local syms
6373 for the function descriptor sym which we
6374 don't have at the moment. So keep an
6375 array of adjustments. */
3f764659
JJ		 6376 opd_adjust[rel->r_offset / 8]
6377 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6378
6379 if (wptr != rptr)
3f764659
JJ		 6380 memcpy (wptr, rptr, opd_ent_size);
6381 wptr += opd_ent_size;
6382 if (add_aux_fields && opd_ent_size == 16)
6383 {
6384 memset (wptr, '\0', 8);
6385 wptr += 8;
6386 }
1e2f5b6e 6387 }
3f764659
JJ		 6388 rptr += opd_ent_size;
6389 offset += opd_ent_size;
1e2f5b6e
AM		 6390 }
6391
50bc7936
AM		 6392 if (skip)
6393 {
8c1d1bb8
AM		 6394 if (!dec_dynrel_count (rel->r_info, sec, info,
6395 NULL, h, sym_sec))
6396 goto error_ret;
50bc7936
AM		 6397 }
6398 else
1e2f5b6e 6399 {
50bc7936
AM		 6400 /* We need to adjust any reloc offsets to point to the
6401 new opd entries. While we're at it, we may as well
6402 remove redundant relocs. */
3f764659 6403 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6404 if (write_rel != rel)
6405 memcpy (write_rel, rel, sizeof (*rel));
6406 ++write_rel;
6407 }
6408 }
6409
3f764659 6410 sec->size = wptr - new_contents;
1e2f5b6e 6411 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6412 if (add_aux_fields)
6413 {
6414 free (sec->contents);
6415 sec->contents = new_contents;
6416 }
6417
cdcf6e38
AM		 6418 /* Fudge the size too, as this is used later in
6419 elf_bfd_final_link if we are emitting relocs. */
6420 elf_section_data (sec)->rel_hdr.sh_size
6421 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6422 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6423 some_edited = TRUE;
1e2f5b6e 6424 }
6cdc0ccc 6425 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6426 free (relstart);
6cdc0ccc 6427
411e1bfb
AM		 6428 if (local_syms != NULL
6429 && symtab_hdr->contents != (unsigned char *) local_syms)
6430 {
6431 if (!info->keep_memory)
6432 free (local_syms);
6433 else
6434 symtab_hdr->contents = (unsigned char *) local_syms;
6435 }
6436 }
6437
754021d0
AM		 6438 if (some_edited)
6439 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6440
3f764659
JJ		 6441 /* If we are doing a final link and the last .opd entry is just 16 byte
6442 long, add a 8 byte padding after it. */
6443 if (need_pad != NULL && !info->relocatable)
6444 {
6445 bfd_byte *p;
6446
6447 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6448 {
6449 BFD_ASSERT (need_pad->size > 0);
6450
6451 p = bfd_malloc (need_pad->size + 8);
6452 if (p == NULL)
6453 return FALSE;
699733f6 6454
3f764659
JJ		 6455 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6456 p, 0, need_pad->size))
6457 return FALSE;
6458
6459 need_pad->contents = p;
6460 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6461 }
6462 else
6463 {
6464 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6465 if (p == NULL)
6466 return FALSE;
6467
6468 need_pad->contents = p;
6469 }
6470
6471 memset (need_pad->contents + need_pad->size, 0, 8);
6472 need_pad->size += 8;
6473 }
6474
411e1bfb
AM		 6475 return TRUE;
6476}
6477
e1918d23 6478/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6479
e1918d23 6480asection *
4ce794b7 6481ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6482{
411e1bfb
AM		 6483 struct ppc_link_hash_table *htab;
6484
411e1bfb 6485 htab = ppc_hash_table (info);
a48ebf4d
AM		 6486 if (htab->tls_get_addr != NULL)
6487 {
8387904d 6488 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6489
8387904d
AM		 6490 while (h->elf.root.type == bfd_link_hash_indirect
6491 || h->elf.root.type == bfd_link_hash_warning)
6492 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6493
6494 htab->tls_get_addr = h;
8387904d
AM		 6495
6496 if (htab->tls_get_addr_fd == NULL
6497 && h->oh != NULL
c4f68ce3
AM		 6498 && h->oh->is_func_descriptor
6499 && (h->oh->elf.root.type == bfd_link_hash_defined
6500 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6501 htab->tls_get_addr_fd = h->oh;
6502 }
6503
6504 if (htab->tls_get_addr_fd != NULL)
6505 {
6506 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6507
6508 while (h->elf.root.type == bfd_link_hash_indirect
6509 || h->elf.root.type == bfd_link_hash_warning)
6510 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6511
6512 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6513 }
6514
e1918d23 6515 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6516}
411e1bfb 6517
951fd09b
AM		 6518/* Run through all the TLS relocs looking for optimization
6519 opportunities. The linker has been hacked (see ppc64elf.em) to do
6520 a preliminary section layout so that we know the TLS segment
6521 offsets. We can't optimize earlier because some optimizations need
6522 to know the tp offset, and we need to optimize before allocating
6523 dynamic relocations. */
6524
6525bfd_boolean
4ce794b7 6526ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6527{
6528 bfd *ibfd;
6529 asection *sec;
6530 struct ppc_link_hash_table *htab;
6531
1049f94e 6532 if (info->relocatable || info->shared)
411e1bfb
AM		 6533 return TRUE;
6534
951fd09b 6535 htab = ppc_hash_table (info);
411e1bfb
AM		 6536 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6537 {
6538 Elf_Internal_Sym *locsyms = NULL;
6539
6540 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6541 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6542 {
6543 Elf_Internal_Rela *relstart, *rel, *relend;
6544 int expecting_tls_get_addr;
6545
6546 /* Read the relocations. */
4ce794b7 6547 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6548 info->keep_memory);
411e1bfb
AM		 6549 if (relstart == NULL)
6550 return FALSE;
6551
6552 expecting_tls_get_addr = 0;
6553 relend = relstart + sec->reloc_count;
6554 for (rel = relstart; rel < relend; rel++)
6555 {
6556 enum elf_ppc64_reloc_type r_type;
6557 unsigned long r_symndx;
6558 struct elf_link_hash_entry *h;
6559 Elf_Internal_Sym *sym;
6560 asection *sym_sec;
e7b938ca
AM		 6561 char *tls_mask;
6562 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6563 bfd_vma value;
951fd09b 6564 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6565
6566 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6567 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6568 r_symndx, ibfd))
6569 {
6570 err_free_rel:
6571 if (elf_section_data (sec)->relocs != relstart)
6572 free (relstart);
6573 if (locsyms != NULL
6574 && (elf_tdata (ibfd)->symtab_hdr.contents
6575 != (unsigned char *) locsyms))
6576 free (locsyms);
6577 return FALSE;
6578 }
6579
6580 if (h != NULL)
6581 {
6582 if (h->root.type != bfd_link_hash_defined
6583 && h->root.type != bfd_link_hash_defweak)
6584 continue;
6585 value = h->root.u.def.value;
6586 }
6587 else
4025353c
AM		 6588 /* Symbols referenced by TLS relocs must be of type
6589 STT_TLS. So no need for .opd local sym adjust. */
6590 value = sym->st_value;
951fd09b 6591
411e1bfb 6592 ok_tprel = FALSE;
951fd09b
AM		 6593 is_local = FALSE;
6594 if (h == NULL
f5385ebf 6595 || !h->def_dynamic)
411e1bfb 6596 {
951fd09b 6597 is_local = TRUE;
411e1bfb
AM		 6598 value += sym_sec->output_offset;
6599 value += sym_sec->output_section->vma;
e1918d23 6600 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6601 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6602 < (bfd_vma) 1 << 32);
6603 }
6604
4ce794b7 6605 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6606 switch (r_type)
6607 {
6608 case R_PPC64_GOT_TLSLD16:
6609 case R_PPC64_GOT_TLSLD16_LO:
6610 case R_PPC64_GOT_TLSLD16_HI:
6611 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6612 /* These relocs should never be against a symbol
6613 defined in a shared lib. Leave them alone if
6614 that turns out to be the case. */
e717da7e 6615 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6616 if (!is_local)
6617 continue;
6618
951fd09b
AM		 6619 /* LD -> LE */
6620 tls_set = 0;
6621 tls_clear = TLS_LD;
e7b938ca 6622 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6623 expecting_tls_get_addr = 1;
6624 break;
6625
6626 case R_PPC64_GOT_TLSGD16:
6627 case R_PPC64_GOT_TLSGD16_LO:
6628 case R_PPC64_GOT_TLSGD16_HI:
6629 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6630 if (ok_tprel)
411e1bfb
AM		 6631 /* GD -> LE */
6632 tls_set = 0;
6633 else
6634 /* GD -> IE */
951fd09b
AM		 6635 tls_set = TLS_TLS | TLS_TPRELGD;
6636 tls_clear = TLS_GD;
e7b938ca 6637 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6638 expecting_tls_get_addr = 1;
6639 break;
6640
6641 case R_PPC64_GOT_TPREL16_DS:
6642 case R_PPC64_GOT_TPREL16_LO_DS:
6643 case R_PPC64_GOT_TPREL16_HI:
6644 case R_PPC64_GOT_TPREL16_HA:
6645 expecting_tls_get_addr = 0;
6646 if (ok_tprel)
6647 {
6648 /* IE -> LE */
6649 tls_set = 0;
6650 tls_clear = TLS_TPREL;
e7b938ca 6651 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6652 break;
6653 }
6654 else
6655 continue;
6656
6657 case R_PPC64_REL14:
6658 case R_PPC64_REL14_BRTAKEN:
6659 case R_PPC64_REL14_BRNTAKEN:
6660 case R_PPC64_REL24:
6661 if (h != NULL
8387904d
AM		 6662 && (h == &htab->tls_get_addr->elf
6663 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6664 {
6665 if (!expecting_tls_get_addr
6666 && rel != relstart
6667 && ((ELF64_R_TYPE (rel[-1].r_info)
6668 == R_PPC64_TOC16)
6669 || (ELF64_R_TYPE (rel[-1].r_info)
6670 == R_PPC64_TOC16_LO)))
6671 {
6672 /* Check for toc tls entries. */
6673 char *toc_tls;
951fd09b 6674 int retval;
411e1bfb 6675
0d4792f7 6676 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6677 rel - 1, ibfd);
6678 if (retval == 0)
411e1bfb
AM		 6679 goto err_free_rel;
6680 if (toc_tls != NULL)
951fd09b 6681 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6682 }
6683
6684 if (expecting_tls_get_addr)
6685 {
6686 struct plt_entry *ent;
6687 for (ent = h->plt.plist; ent; ent = ent->next)
6688 if (ent->addend == 0)
6689 {
6690 if (ent->plt.refcount > 0)
6691 ent->plt.refcount -= 1;
6692 break;
6693 }
6694 }
6695 }
6696 expecting_tls_get_addr = 0;
6697 continue;
6698
6699 case R_PPC64_TPREL64:
6700 expecting_tls_get_addr = 0;
6701 if (ok_tprel)
6702 {
6703 /* IE -> LE */
6704 tls_set = TLS_EXPLICIT;
6705 tls_clear = TLS_TPREL;
6706 break;
6707 }
6708 else
6709 continue;
6710
6711 case R_PPC64_DTPMOD64:
6712 expecting_tls_get_addr = 0;
951fd09b
AM		 6713 if (rel + 1 < relend
6714 && (rel[1].r_info
6715 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6716 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6717 {
951fd09b 6718 if (ok_tprel)
411e1bfb 6719 /* GD -> LE */
951fd09b 6720 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6721 else
6722 /* GD -> IE */
951fd09b
AM		 6723 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6724 tls_clear = TLS_GD;
411e1bfb
AM		 6725 }
6726 else
6727 {
951fd09b
AM		 6728 if (!is_local)
6729 continue;
6730
6731 /* LD -> LE */
6732 tls_set = TLS_EXPLICIT;
6733 tls_clear = TLS_LD;
411e1bfb
AM		 6734 }
6735 break;
6736
6737 default:
6738 expecting_tls_get_addr = 0;
6739 continue;
6740 }
6741
6742 if ((tls_set & TLS_EXPLICIT) == 0)
6743 {
6744 struct got_entry *ent;
6745
6746 /* Adjust got entry for this reloc. */
6747 if (h != NULL)
6748 ent = h->got.glist;
6749 else
6750 ent = elf_local_got_ents (ibfd)[r_symndx];
6751
6752 for (; ent != NULL; ent = ent->next)
6753 if (ent->addend == rel->r_addend
e717da7e 6754 && ent->owner == ibfd
e7b938ca 6755 && ent->tls_type == tls_type)
411e1bfb
AM		 6756 break;
6757 if (ent == NULL)
6758 abort ();
6759
6760 if (tls_set == 0)
6761 {
6762 /* We managed to get rid of a got entry. */
6763 if (ent->got.refcount > 0)
6764 ent->got.refcount -= 1;
6765 }
411e1bfb 6766 }
8c1d1bb8 6767 else
411e1bfb 6768 {
8c1d1bb8
AM		 6769 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6770 we'll lose one or two dyn relocs. */
6771 if (!dec_dynrel_count (rel->r_info, sec, info,
6772 NULL, h, sym_sec))
6773 return FALSE;
6774
6775 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6776 {
6777 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6778 NULL, h, sym_sec))
6779 return FALSE;
6780 }
411e1bfb
AM		 6781 }
6782
e7b938ca
AM		 6783 *tls_mask |= tls_set;
6784 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6785 }
6786
6787 if (elf_section_data (sec)->relocs != relstart)
6788 free (relstart);
6789 }
6790
6791 if (locsyms != NULL
6792 && (elf_tdata (ibfd)->symtab_hdr.contents
6793 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6794 {
6795 if (!info->keep_memory)
411e1bfb 6796 free (locsyms);
6cdc0ccc 6797 else
411e1bfb 6798 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6799 }
1e2f5b6e 6800 }
b34976b6 6801 return TRUE;
1e2f5b6e 6802}
b34976b6 6803
c5614fa4
AM		 6804/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6805 the values of any global symbols in a toc section that has been
6806 edited. Globals in toc sections should be a rarity, so this function
6807 sets a flag if any are found in toc sections other than the one just
6808 edited, so that futher hash table traversals can be avoided. */
6809
6810struct adjust_toc_info
6811{
6812 asection *toc;
6813 unsigned long *skip;
6814 bfd_boolean global_toc_syms;
6815};
6816
6817static bfd_boolean
6818adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6819{
6820 struct ppc_link_hash_entry *eh;
6821 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6822
6823 if (h->root.type == bfd_link_hash_indirect)
6824 return TRUE;
6825
6826 if (h->root.type == bfd_link_hash_warning)
6827 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6828
6829 if (h->root.type != bfd_link_hash_defined
6830 && h->root.type != bfd_link_hash_defweak)
6831 return TRUE;
6832
6833 eh = (struct ppc_link_hash_entry *) h;
6834 if (eh->adjust_done)
6835 return TRUE;
6836
6837 if (eh->elf.root.u.def.section == toc_inf->toc)
6838 {
6839 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6840 if (skip != (unsigned long) -1)
6841 eh->elf.root.u.def.value -= skip;
6842 else
6843 {
6844 (*_bfd_error_handler)
6845 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6846 eh->elf.root.u.def.section = &bfd_abs_section;
6847 eh->elf.root.u.def.value = 0;
6848 }
6849 eh->adjust_done = 1;
6850 }
6851 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6852 toc_inf->global_toc_syms = TRUE;
6853
6854 return TRUE;
6855}
6856
6857/* Examine all relocs referencing .toc sections in order to remove
6858 unused .toc entries. */
6859
6860bfd_boolean
6861ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6862{
6863 bfd *ibfd;
6864 struct adjust_toc_info toc_inf;
6865
6866 toc_inf.global_toc_syms = TRUE;
6867 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6868 {
6869 asection *toc, *sec;
6870 Elf_Internal_Shdr *symtab_hdr;
6871 Elf_Internal_Sym *local_syms;
6872 struct elf_link_hash_entry **sym_hashes;
92b7a70f 6873 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 6874 unsigned long *skip, *drop;
6875 unsigned char *used;
6876 unsigned char *keep, last, some_unused;
6877
6878 toc = bfd_get_section_by_name (ibfd, ".toc");
6879 if (toc == NULL
92b7a70f 6880 || toc->size == 0
c5614fa4
AM		 6881 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6882 || elf_discarded_section (toc))
6883 continue;
6884
6885 local_syms = NULL;
6886 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6887 sym_hashes = elf_sym_hashes (ibfd);
6888
6889 /* Look at sections dropped from the final link. */
6890 skip = NULL;
6891 relstart = NULL;
6892 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6893 {
6894 if (sec->reloc_count == 0
6895 || !elf_discarded_section (sec)
6896 || get_opd_info (sec)
6897 || (sec->flags & SEC_ALLOC) == 0
6898 || (sec->flags & SEC_DEBUGGING) != 0)
6899 continue;
6900
6901 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6902 if (relstart == NULL)
6903 goto error_ret;
6904
6905 /* Run through the relocs to see which toc entries might be
6906 unused. */
6907 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6908 {
6909 enum elf_ppc64_reloc_type r_type;
6910 unsigned long r_symndx;
6911 asection *sym_sec;
6912 struct elf_link_hash_entry *h;
6913 Elf_Internal_Sym *sym;
6914 bfd_vma val;
6915
6916 r_type = ELF64_R_TYPE (rel->r_info);
6917 switch (r_type)
6918 {
6919 default:
6920 continue;
6921
6922 case R_PPC64_TOC16:
6923 case R_PPC64_TOC16_LO:
6924 case R_PPC64_TOC16_HI:
6925 case R_PPC64_TOC16_HA:
6926 case R_PPC64_TOC16_DS:
6927 case R_PPC64_TOC16_LO_DS:
6928 break;
6929 }
6930
6931 r_symndx = ELF64_R_SYM (rel->r_info);
6932 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6933 r_symndx, ibfd))
6934 goto error_ret;
6935
6936 if (sym_sec != toc)
6937 continue;
6938
6939 if (h != NULL)
6940 val = h->root.u.def.value;
6941 else
6942 val = sym->st_value;
6943 val += rel->r_addend;
6944
6945 if (val >= toc->size)
6946 continue;
6947
6948 /* Anything in the toc ought to be aligned to 8 bytes.
6949 If not, don't mark as unused. */
6950 if (val & 7)
6951 continue;
6952
6953 if (skip == NULL)
6954 {
6955 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6956 if (skip == NULL)
6957 goto error_ret;
6958 }
6959
6960 skip[val >> 3] = 1;
6961 }
6962
6963 if (elf_section_data (sec)->relocs != relstart)
6964 free (relstart);
6965 }
6966
6967 if (skip == NULL)
6968 continue;
6969
6970 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6971 if (used == NULL)
6972 {
6973 error_ret:
6974 if (local_syms != NULL
6975 && symtab_hdr->contents != (unsigned char *) local_syms)
6976 free (local_syms);
6977 if (sec != NULL
6978 && relstart != NULL
6979 && elf_section_data (sec)->relocs != relstart)
6980 free (relstart);
6981 if (skip != NULL)
6982 free (skip);
6983 return FALSE;
6984 }
6985
6986 /* Now check all kept sections that might reference the toc. */
6987 for (sec = ibfd->sections;
6988 sec != NULL;
6989 /* Check the toc itself last. */
6990 sec = (sec == toc ? NULL
6991 : sec->next == toc && sec->next->next ? sec->next->next
6992 : sec->next == NULL ? toc
6993 : sec->next))
6994 {
6995 int repeat;
6996
6997 if (sec->reloc_count == 0
6998 || elf_discarded_section (sec)
6999 || get_opd_info (sec)
7000 || (sec->flags & SEC_ALLOC) == 0
7001 || (sec->flags & SEC_DEBUGGING) != 0)
7002 continue;
7003
7004 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7005 if (relstart == NULL)
7006 goto error_ret;
7007
7008 /* Mark toc entries referenced as used. */
7009 repeat = 0;
7010 do
7011 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7012 {
7013 enum elf_ppc64_reloc_type r_type;
7014 unsigned long r_symndx;
7015 asection *sym_sec;
7016 struct elf_link_hash_entry *h;
7017 Elf_Internal_Sym *sym;
7018 bfd_vma val;
7019
7020 r_type = ELF64_R_TYPE (rel->r_info);
7021 switch (r_type)
7022 {
7023 case R_PPC64_TOC16:
7024 case R_PPC64_TOC16_LO:
7025 case R_PPC64_TOC16_HI:
7026 case R_PPC64_TOC16_HA:
7027 case R_PPC64_TOC16_DS:
7028 case R_PPC64_TOC16_LO_DS:
7029 /* In case we're taking addresses of toc entries. */
7030 case R_PPC64_ADDR64:
7031 break;
7032
7033 default:
7034 continue;
7035 }
7036
7037 r_symndx = ELF64_R_SYM (rel->r_info);
7038 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7039 r_symndx, ibfd))
7040 {
7041 free (used);
7042 goto error_ret;
7043 }
7044
7045 if (sym_sec != toc)
7046 continue;
7047
7048 if (h != NULL)
7049 val = h->root.u.def.value;
7050 else
7051 val = sym->st_value;
7052 val += rel->r_addend;
7053
7054 if (val >= toc->size)
7055 continue;
7056
7057 /* For the toc section, we only mark as used if
7058 this entry itself isn't unused. */
7059 if (sec == toc
7060 && !used[val >> 3]
7061 && (used[rel->r_offset >> 3]
7062 || !skip[rel->r_offset >> 3]))
7063 /* Do all the relocs again, to catch reference
7064 chains. */
7065 repeat = 1;
7066
7067 used[val >> 3] = 1;
7068 }
7069 while (repeat);
7070 }
7071
7072 /* Merge the used and skip arrays. Assume that TOC
7073 doublewords not appearing as either used or unused belong
7074 to to an entry more than one doubleword in size. */
7075 for (drop = skip, keep = used, last = 0, some_unused = 0;
7076 drop < skip + (toc->size + 7) / 8;
7077 ++drop, ++keep)
7078 {
7079 if (*keep)
7080 {
7081 *drop = 0;
7082 last = 0;
7083 }
7084 else if (*drop)
7085 {
7086 some_unused = 1;
7087 last = 1;
7088 }
7089 else
7090 *drop = last;
7091 }
7092
7093 free (used);
7094
7095 if (some_unused)
7096 {
7097 bfd_byte *contents, *src;
7098 unsigned long off;
7099
7100 /* Shuffle the toc contents, and at the same time convert the
7101 skip array from booleans into offsets. */
7102 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7103 goto error_ret;
7104
7105 elf_section_data (toc)->this_hdr.contents = contents;
7106
7107 for (src = contents, off = 0, drop = skip;
7108 src < contents + toc->size;
7109 src += 8, ++drop)
7110 {
7111 if (*drop)
7112 {
7113 *drop = (unsigned long) -1;
7114 off += 8;
7115 }
7116 else if (off != 0)
7117 {
7118 *drop = off;
7119 memcpy (src - off, src, 8);
7120 }
7121 }
7122 toc->rawsize = toc->size;
7123 toc->size = src - contents - off;
7124
92b7a70f
AM		 7125 if (toc->reloc_count != 0)
7126 {
7127 Elf_Internal_Rela *wrel;
7128 bfd_size_type sz;
c5614fa4 7129
92b7a70f
AM		 7130 /* Read toc relocs. */
7131 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7132 TRUE);
7133 if (relstart == NULL)
7134 goto error_ret;
7135
7136 /* Remove unused toc relocs, and adjust those we keep. */
7137 wrel = relstart;
7138 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7139 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7140 {
7141 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7142 wrel->r_info = rel->r_info;
7143 wrel->r_addend = rel->r_addend;
7144 ++wrel;
7145 }
8c1d1bb8
AM		 7146 else if (!dec_dynrel_count (rel->r_info, toc, info,
7147 &local_syms, NULL, NULL))
7148 goto error_ret;
35090471 7149
92b7a70f
AM		 7150 toc->reloc_count = wrel - relstart;
7151 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7152 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7153 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7154 }
c5614fa4
AM		 7155
7156 /* Adjust addends for relocs against the toc section sym. */
7157 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7158 {
7159 if (sec->reloc_count == 0
7160 || elf_discarded_section (sec))
7161 continue;
7162
7163 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7164 TRUE);
7165 if (relstart == NULL)
7166 goto error_ret;
7167
7168 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7169 {
7170 enum elf_ppc64_reloc_type r_type;
7171 unsigned long r_symndx;
7172 asection *sym_sec;
7173 struct elf_link_hash_entry *h;
7174 Elf_Internal_Sym *sym;
7175
7176 r_type = ELF64_R_TYPE (rel->r_info);
7177 switch (r_type)
7178 {
7179 default:
7180 continue;
7181
7182 case R_PPC64_TOC16:
7183 case R_PPC64_TOC16_LO:
7184 case R_PPC64_TOC16_HI:
7185 case R_PPC64_TOC16_HA:
7186 case R_PPC64_TOC16_DS:
7187 case R_PPC64_TOC16_LO_DS:
7188 case R_PPC64_ADDR64:
7189 break;
7190 }
7191
7192 r_symndx = ELF64_R_SYM (rel->r_info);
7193 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7194 r_symndx, ibfd))
7195 goto error_ret;
7196
7197 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7198 continue;
7199
7200 rel->r_addend -= skip[rel->r_addend >> 3];
7201 }
7202 }
7203
7204 /* We shouldn't have local or global symbols defined in the TOC,
7205 but handle them anyway. */
7206 if (local_syms != NULL)
7207 {
7208 Elf_Internal_Sym *sym;
7209
7210 for (sym = local_syms;
7211 sym < local_syms + symtab_hdr->sh_info;
7212 ++sym)
7213 if (sym->st_shndx != SHN_UNDEF
7214 && (sym->st_shndx < SHN_LORESERVE
7215 || sym->st_shndx > SHN_HIRESERVE)
7216 && sym->st_value != 0
7217 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7218 {
7219 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7220 sym->st_value -= skip[sym->st_value >> 3];
7221 else
7222 {
7223 (*_bfd_error_handler)
7224 (_("%s defined in removed toc entry"),
26c61ae5
L		 7225 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7226 NULL));
c5614fa4
AM		 7227 sym->st_value = 0;
7228 sym->st_shndx = SHN_ABS;
7229 }
7230 symtab_hdr->contents = (unsigned char *) local_syms;
7231 }
7232 }
7233
7234 /* Finally, adjust any global syms defined in the toc. */
7235 if (toc_inf.global_toc_syms)
7236 {
7237 toc_inf.toc = toc;
7238 toc_inf.skip = skip;
7239 toc_inf.global_toc_syms = FALSE;
7240 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7241 &toc_inf);
7242 }
7243 }
7244
7245 if (local_syms != NULL
7246 && symtab_hdr->contents != (unsigned char *) local_syms)
7247 {
7248 if (!info->keep_memory)
7249 free (local_syms);
7250 else
7251 symtab_hdr->contents = (unsigned char *) local_syms;
7252 }
7253 free (skip);
7254 }
7255
7256 return TRUE;
7257}
7258
65f38f15
AM		 7259/* Allocate space in .plt, .got and associated reloc sections for
7260 dynamic relocs. */
5bd4f169 7261
b34976b6 7262static bfd_boolean
4ce794b7 7263allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7264{
65f38f15
AM		 7265 struct bfd_link_info *info;
7266 struct ppc_link_hash_table *htab;
5bd4f169 7267 asection *s;
65f38f15
AM		 7268 struct ppc_link_hash_entry *eh;
7269 struct ppc_dyn_relocs *p;
411e1bfb 7270 struct got_entry *gent;
5bd4f169 7271
e92d460e 7272 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7273 return TRUE;
5bd4f169 7274
e92d460e
AM		 7275 if (h->root.type == bfd_link_hash_warning)
7276 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7277
65f38f15
AM		 7278 info = (struct bfd_link_info *) inf;
7279 htab = ppc_hash_table (info);
5bd4f169 7280
65f38f15 7281 if (htab->elf.dynamic_sections_created
411e1bfb 7282 && h->dynindx != -1
9c7a29a3 7283 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7284 {
411e1bfb
AM		 7285 struct plt_entry *pent;
7286 bfd_boolean doneone = FALSE;
7287 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7288 if (pent->plt.refcount > 0)
7289 {
411e1bfb
AM		 7290 /* If this is the first .plt entry, make room for the special
7291 first entry. */
4ce794b7 7292 s = htab->plt;
eea6121a
AM		 7293 if (s->size == 0)
7294 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7295
eea6121a 7296 pent->plt.offset = s->size;
411e1bfb
AM		 7297
7298 /* Make room for this entry. */
eea6121a 7299 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7300
7301 /* Make room for the .glink code. */
4ce794b7 7302 s = htab->glink;
eea6121a
AM		 7303 if (s->size == 0)
7304 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7305 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7306 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7307 s->size += 4;
7308 s->size += 2*4;
411e1bfb
AM		 7309
7310 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7311 s = htab->relplt;
eea6121a 7312 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7313 doneone = TRUE;
7314 }
7315 else
7316 pent->plt.offset = (bfd_vma) -1;
7317 if (!doneone)
65f38f15 7318 {
411e1bfb 7319 h->plt.plist = NULL;
f5385ebf 7320 h->needs_plt = 0;
65f38f15
AM		 7321 }
7322 }
7323 else
7324 {
411e1bfb 7325 h->plt.plist = NULL;
f5385ebf 7326 h->needs_plt = 0;
65f38f15
AM		 7327 }
7328
951fd09b
AM		 7329 eh = (struct ppc_link_hash_entry *) h;
7330 /* Run through the TLS GD got entries first if we're changing them
7331 to TPREL. */
e7b938ca 7332 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7333 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7334 if (gent->got.refcount > 0
7335 && (gent->tls_type & TLS_GD) != 0)
7336 {
7337 /* This was a GD entry that has been converted to TPREL. If
7338 there happens to be a TPREL entry we can use that one. */
7339 struct got_entry *ent;
7340 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7341 if (ent->got.refcount > 0
7342 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7343 && ent->addend == gent->addend
7344 && ent->owner == gent->owner)
951fd09b
AM		 7345 {
7346 gent->got.refcount = 0;
7347 break;
7348 }
7349
7350 /* If not, then we'll be using our own TPREL entry. */
7351 if (gent->got.refcount != 0)
7352 gent->tls_type = TLS_TLS | TLS_TPREL;
7353 }
7354
411e1bfb
AM		 7355 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7356 if (gent->got.refcount > 0)
7357 {
951fd09b
AM		 7358 bfd_boolean dyn;
7359
411e1bfb 7360 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7361 Undefined weak syms won't yet be marked as dynamic,
7362 nor will all TLS symbols. */
411e1bfb 7363 if (h->dynindx == -1
f5385ebf 7364 && !h->forced_local)
411e1bfb 7365 {
c152c796 7366 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7367 return FALSE;
7368 }
65f38f15 7369
d881513a 7370 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7371 && !h->def_dynamic)
411e1bfb 7372 {
e717da7e 7373 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7374 continue;
411e1bfb 7375 }
951fd09b 7376
e717da7e 7377 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7378 gent->got.offset = s->size;
7379 s->size
d881513a 7380 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7381 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7382 if ((info->shared
7383 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7384 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7385 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7386 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7387 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7388 ? 2 * sizeof (Elf64_External_Rela)
7389 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7390 }
7391 else
7392 gent->got.offset = (bfd_vma) -1;
65f38f15 7393
65f38f15 7394 if (eh->dyn_relocs == NULL)
b34976b6 7395 return TRUE;
65f38f15
AM		 7396
7397 /* In the shared -Bsymbolic case, discard space allocated for
7398 dynamic pc-relative relocs against symbols which turn out to be
7399 defined in regular objects. For the normal shared case, discard
7400 space for relocs that have become local due to symbol visibility
7401 changes. */
7402
7403 if (info->shared)
7404 {
9c7a29a3
AM		 7405 /* Relocs that use pc_count are those that appear on a call insn,
7406 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7407 generated via assembly. We want calls to protected symbols to
7408 resolve directly to the function rather than going via the plt.
7409 If people want function pointer comparisons to work as expected
7410 then they should avoid writing weird assembly. */
09695f56 7411 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7412 {
7413 struct ppc_dyn_relocs **pp;
7414
7415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7416 {
65f38f15
AM		 7417 p->count -= p->pc_count;
7418 p->pc_count = 0;
7419 if (p->count == 0)
7420 *pp = p->next;
7421 else
7422 pp = &p->next;
5bd4f169 7423 }
65f38f15 7424 }
4e795f50
AM		 7425
7426 /* Also discard relocs on undefined weak syms with non-default
7427 visibility. */
7428 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7429 && h->root.type == bfd_link_hash_undefweak)
7430 eh->dyn_relocs = NULL;
65f38f15 7431 }
f4656909 7432 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7433 {
7434 /* For the non-shared case, discard space for relocs against
7435 symbols which turn out to need copy relocs or are not
7436 dynamic. */
7437
f5385ebf
AM		 7438 if (!h->non_got_ref
7439 && h->def_dynamic
7440 && !h->def_regular)
65f38f15
AM		 7441 {
7442 /* Make sure this symbol is output as a dynamic symbol.
7443 Undefined weak syms won't yet be marked as dynamic. */
7444 if (h->dynindx == -1
f5385ebf 7445 && !h->forced_local)
65f38f15 7446 {
c152c796 7447 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7448 return FALSE;
65f38f15
AM		 7449 }
7450
7451 /* If that succeeded, we know we'll be keeping all the
7452 relocs. */
7453 if (h->dynindx != -1)
7454 goto keep;
7455 }
7456
7457 eh->dyn_relocs = NULL;
7458
ec338859 7459 keep: ;
65f38f15
AM		 7460 }
7461
7462 /* Finally, allocate space. */
7463 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7464 {
7465 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7466 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7467 }
7468
b34976b6 7469 return TRUE;
65f38f15
AM		 7470}
7471
7472/* Find any dynamic relocs that apply to read-only sections. */
7473
b34976b6 7474static bfd_boolean
4ce794b7 7475readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7476{
7477 struct ppc_link_hash_entry *eh;
7478 struct ppc_dyn_relocs *p;
7479
e92d460e
AM		 7480 if (h->root.type == bfd_link_hash_warning)
7481 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7482
65f38f15
AM		 7483 eh = (struct ppc_link_hash_entry *) h;
7484 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7485 {
7486 asection *s = p->sec->output_section;
7487
7488 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7489 {
4ce794b7 7490 struct bfd_link_info *info = inf;
65f38f15
AM		 7491
7492 info->flags |= DF_TEXTREL;
7493
7494 /* Not an error, just cut short the traversal. */
b34976b6 7495 return FALSE;
65f38f15
AM		 7496 }
7497 }
b34976b6 7498 return TRUE;
65f38f15
AM		 7499}
7500
7501/* Set the sizes of the dynamic sections. */
7502
b34976b6 7503static bfd_boolean
4ce794b7
AM		 7504ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7505 struct bfd_link_info *info)
65f38f15
AM		 7506{
7507 struct ppc_link_hash_table *htab;
7508 bfd *dynobj;
7509 asection *s;
b34976b6 7510 bfd_boolean relocs;
65f38f15
AM		 7511 bfd *ibfd;
7512
7513 htab = ppc_hash_table (info);
7514 dynobj = htab->elf.dynobj;
7515 if (dynobj == NULL)
7516 abort ();
7517
7518 if (htab->elf.dynamic_sections_created)
7519 {
7520 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7521 if (info->executable)
65f38f15
AM		 7522 {
7523 s = bfd_get_section_by_name (dynobj, ".interp");
7524 if (s == NULL)
7525 abort ();
eea6121a 7526 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7527 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7528 }
7529 }
7530
7531 /* Set up .got offsets for local syms, and space for local dynamic
7532 relocs. */
7533 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7534 {
411e1bfb
AM		 7535 struct got_entry **lgot_ents;
7536 struct got_entry **end_lgot_ents;
e7b938ca 7537 char *lgot_masks;
65f38f15
AM		 7538 bfd_size_type locsymcount;
7539 Elf_Internal_Shdr *symtab_hdr;
7540 asection *srel;
7541
ee75fd95 7542 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7543 continue;
7544
e717da7e
AM		 7545 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7546 {
7547 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7548 ppc64_tlsld_got (ibfd)->offset = s->size;
7549 s->size += 16;
e717da7e
AM		 7550 if (info->shared)
7551 {
7552 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7553 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7554 }
7555 }
7556 else
7557 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7558
65f38f15
AM		 7559 for (s = ibfd->sections; s != NULL; s = s->next)
7560 {
ec338859 7561 struct ppc_dyn_relocs *p;
65f38f15 7562
ec338859
AM		 7563 for (p = *((struct ppc_dyn_relocs **)
7564 &elf_section_data (s)->local_dynrel);
7565 p != NULL;
7566 p = p->next)
65f38f15 7567 {
ec338859
AM		 7568 if (!bfd_is_abs_section (p->sec)
7569 && bfd_is_abs_section (p->sec->output_section))
7570 {
7571 /* Input section has been discarded, either because
7572 it is a copy of a linkonce section or due to
7573 linker script /DISCARD/, so we'll be discarding
7574 the relocs too. */
7575 }
248866a8 7576 else if (p->count != 0)
ec338859
AM		 7577 {
7578 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7579 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7580 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7581 info->flags |= DF_TEXTREL;
ec338859 7582 }
65f38f15
AM		 7583 }
7584 }
7585
411e1bfb
AM		 7586 lgot_ents = elf_local_got_ents (ibfd);
7587 if (!lgot_ents)
65f38f15
AM		 7588 continue;
7589
7590 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7591 locsymcount = symtab_hdr->sh_info;
411e1bfb 7592 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7593 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7594 s = ppc64_elf_tdata (ibfd)->got;
7595 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7596 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7597 {
411e1bfb
AM		 7598 struct got_entry *ent;
7599
7600 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7601 if (ent->got.refcount > 0)
7602 {
e7b938ca 7603 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7604 {
e717da7e 7605 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7606 {
eea6121a
AM		 7607 ppc64_tlsld_got (ibfd)->offset = s->size;
7608 s->size += 16;
411e1bfb 7609 if (info->shared)
eea6121a 7610 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7611 }
e717da7e 7612 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7613 }
7614 else
7615 {
eea6121a 7616 ent->got.offset = s->size;
e7b938ca 7617 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7618 {
eea6121a 7619 s->size += 16;
411e1bfb 7620 if (info->shared)
eea6121a 7621 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7622 }
7623 else
7624 {
eea6121a 7625 s->size += 8;
411e1bfb 7626 if (info->shared)
eea6121a 7627 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7628 }
7629 }
7630 }
7631 else
7632 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7633 }
7634 }
7635
7636 /* Allocate global sym .plt and .got entries, and space for global
7637 sym dynamic relocs. */
4ce794b7 7638 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7639
7640 /* We now have determined the sizes of the various dynamic sections.
7641 Allocate memory for them. */
b34976b6 7642 relocs = FALSE;
65f38f15
AM		 7643 for (s = dynobj->sections; s != NULL; s = s->next)
7644 {
7645 if ((s->flags & SEC_LINKER_CREATED) == 0)
7646 continue;
7647
4ce794b7 7648 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7649 /* These haven't been allocated yet; don't strip. */
7650 continue;
e717da7e
AM		 7651 else if (s == htab->got
7652 || s == htab->plt
4ce794b7 7653 || s == htab->glink)
65f38f15
AM		 7654 {
7655 /* Strip this section if we don't need it; see the
7656 comment below. */
5bd4f169 7657 }
65f38f15 7658 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7659 {
eea6121a 7660 if (s->size == 0)
5bd4f169
AM		 7661 {
7662 /* If we don't need this section, strip it from the
7663 output file. This is mostly to handle .rela.bss and
7664 .rela.plt. We must create both sections in
7665 create_dynamic_sections, because they must be created
7666 before the linker maps input sections to output
7667 sections. The linker does that before
7668 adjust_dynamic_symbol is called, and it is that
7669 function which decides whether anything needs to go
7670 into these sections. */
5bd4f169
AM		 7671 }
7672 else
7673 {
4ce794b7 7674 if (s != htab->relplt)
b34976b6 7675 relocs = TRUE;
5bd4f169
AM		 7676
7677 /* We use the reloc_count field as a counter if we need
7678 to copy relocs into the output file. */
7679 s->reloc_count = 0;
7680 }
7681 }
65f38f15 7682 else
5bd4f169
AM		 7683 {
7684 /* It's not one of our sections, so don't allocate space. */
7685 continue;
7686 }
7687
eea6121a 7688 if (s->size == 0)
5bd4f169 7689 {
8423293d 7690 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 7691 continue;
7692 }
7693
5f333394 7694 /* .plt is in the bss section. We don't initialise it. */
680a3378 7695 if (s == htab->plt)
5f333394
AM		 7696 continue;
7697
65f38f15
AM		 7698 /* Allocate memory for the section contents. We use bfd_zalloc
7699 here in case unused entries are not reclaimed before the
7700 section's contents are written out. This should not happen,
411e1bfb
AM		 7701 but this way if it does we get a R_PPC64_NONE reloc in .rela
7702 sections instead of garbage.
7703 We also rely on the section contents being zero when writing
7704 the GOT. */
eea6121a 7705 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7706 if (s->contents == NULL)
b34976b6 7707 return FALSE;
5bd4f169
AM		 7708 }
7709
e717da7e
AM		 7710 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7711 {
ee75fd95 7712 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7713 continue;
7714
e717da7e
AM		 7715 s = ppc64_elf_tdata (ibfd)->got;
7716 if (s != NULL && s != htab->got)
7717 {
eea6121a 7718 if (s->size == 0)
8423293d 7719 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7720 else
7721 {
eea6121a 7722 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7723 if (s->contents == NULL)
7724 return FALSE;
7725 }
7726 }
7727 s = ppc64_elf_tdata (ibfd)->relgot;
7728 if (s != NULL)
7729 {
eea6121a 7730 if (s->size == 0)
8423293d 7731 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7732 else
7733 {
eea6121a 7734 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7735 if (s->contents == NULL)
7736 return FALSE;
7737 relocs = TRUE;
7738 s->reloc_count = 0;
7739 }
7740 }
7741 }
7742
e86ce104 7743 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7744 {
7745 /* Add some entries to the .dynamic section. We fill in the
7746 values later, in ppc64_elf_finish_dynamic_sections, but we
7747 must add the entries now so that we get the correct size for
7748 the .dynamic section. The DT_DEBUG entry is filled in by the
7749 dynamic linker and used by the debugger. */
dc810e39 7750#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7751 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7752
36af4a4e 7753 if (info->executable)
5bd4f169 7754 {
dc810e39 7755 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7756 return FALSE;
5bd4f169
AM		 7757 }
7758
eea6121a 7759 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7760 {
dc810e39
AM		 7761 if (!add_dynamic_entry (DT_PLTGOT, 0)
7762 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7763 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7764 || !add_dynamic_entry (DT_JMPREL, 0)
7765 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7766 return FALSE;
5bd4f169
AM		 7767 }
7768
19397422
AM		 7769 if (NO_OPD_RELOCS)
7770 {
7771 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7772 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7773 return FALSE;
19397422
AM		 7774 }
7775
5bd4f169
AM		 7776 if (relocs)
7777 {
dc810e39
AM		 7778 if (!add_dynamic_entry (DT_RELA, 0)
7779 || !add_dynamic_entry (DT_RELASZ, 0)
7780 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7781 return FALSE;
5bd4f169 7782
65f38f15
AM		 7783 /* If any dynamic relocs apply to a read-only section,
7784 then we need a DT_TEXTREL entry. */
248866a8 7785 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7786 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7787
65f38f15 7788 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7789 {
65f38f15 7790 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7791 return FALSE;
5bd4f169 7792 }
5bd4f169 7793 }
5bd4f169 7794 }
65f38f15 7795#undef add_dynamic_entry
5bd4f169 7796
b34976b6 7797 return TRUE;
5bd4f169
AM		 7798}
7799
721956f4 7800/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7801
4ce794b7
AM		 7802static inline enum ppc_stub_type
7803ppc_type_of_stub (asection *input_sec,
7804 const Elf_Internal_Rela *rel,
7805 struct ppc_link_hash_entry **hash,
7806 bfd_vma destination)
5bd4f169 7807{
721956f4
AM		 7808 struct ppc_link_hash_entry *h = *hash;
7809 bfd_vma location;
7810 bfd_vma branch_offset;
7811 bfd_vma max_branch_offset;
4ce794b7 7812 enum elf_ppc64_reloc_type r_type;
5bd4f169 7813
721956f4
AM		 7814 if (h != NULL)
7815 {
7816 if (h->oh != NULL
8387904d
AM		 7817 && h->oh->is_func_descriptor)
7818 h = h->oh;
7819
7820 if (h->elf.dynindx != -1)
5bd4f169 7821 {
411e1bfb 7822 struct plt_entry *ent;
8387904d
AM		 7823
7824 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7825 if (ent->addend == rel->r_addend
7826 && ent->plt.offset != (bfd_vma) -1)
7827 {
8387904d 7828 *hash = h;
411e1bfb
AM		 7829 return ppc_stub_plt_call;
7830 }
5bd4f169
AM		 7831 }
7832
ee7de3e6
AM		 7833 if (!(h->elf.root.type == bfd_link_hash_defined
7834 || h->elf.root.type == bfd_link_hash_defweak)
7835 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7836 return ppc_stub_none;
5d1634d7 7837 }
5d1634d7 7838
721956f4
AM		 7839 /* Determine where the call point is. */
7840 location = (input_sec->output_offset
7841 + input_sec->output_section->vma
7842 + rel->r_offset);
5d1634d7 7843
721956f4
AM		 7844 branch_offset = destination - location;
7845 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7846
721956f4
AM		 7847 /* Determine if a long branch stub is needed. */
7848 max_branch_offset = 1 << 25;
4ce794b7 7849 if (r_type != R_PPC64_REL24)
721956f4 7850 max_branch_offset = 1 << 15;
5d1634d7 7851
721956f4
AM		 7852 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7853 /* We need a stub. Figure out whether a long_branch or plt_branch
7854 is needed later. */
7855 return ppc_stub_long_branch;
5d1634d7 7856
721956f4 7857 return ppc_stub_none;
5d1634d7
AM		 7858}
7859
7860/* Build a .plt call stub. */
7861
4ce794b7
AM		 7862static inline bfd_byte *
7863build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7864{
7865#define PPC_LO(v) ((v) & 0xffff)
7866#define PPC_HI(v) (((v) >> 16) & 0xffff)
7867#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7868
5d1634d7 7869 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7870 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7871 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7872 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7873 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7874 offset += 8;
7875 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7876 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7877 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7878 offset += 8;
7879 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7880 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7881 bfd_put_32 (obfd, BCTR, p), p += 4;
7882 return p;
7883}
7884
b34976b6 7885static bfd_boolean
4ce794b7 7886ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7887{
721956f4
AM		 7888 struct ppc_stub_hash_entry *stub_entry;
7889 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7890 struct bfd_link_info *info;
7891 struct ppc_link_hash_table *htab;
721956f4
AM		 7892 bfd_byte *loc;
7893 bfd_byte *p;
7894 unsigned int indx;
411e1bfb 7895 struct plt_entry *ent;
ee75fd95 7896 bfd_vma dest, off;
721956f4 7897 int size;
5d1634d7 7898
721956f4
AM		 7899 /* Massage our args to the form they really have. */
7900 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7901 info = in_arg;
5d1634d7 7902
5d1634d7
AM		 7903 htab = ppc_hash_table (info);
7904
721956f4 7905 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7906 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7907 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7908
4ce794b7 7909 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7910 switch (stub_entry->stub_type)
5d1634d7 7911 {
721956f4 7912 case ppc_stub_long_branch:
ad8e1ba5 7913 case ppc_stub_long_branch_r2off:
721956f4 7914 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7915 off = dest = (stub_entry->target_value
7916 + stub_entry->target_section->output_offset
7917 + stub_entry->target_section->output_section->vma);
5d1634d7 7918
721956f4
AM		 7919 /* And this is where we are coming from. */
7920 off -= (stub_entry->stub_offset
97b639ba
AM		 7921 + stub_entry->stub_sec->output_offset
7922 + stub_entry->stub_sec->output_section->vma);
e86ce104 7923
ad8e1ba5
AM		 7924 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7925 size = 4;
7926 else
7927 {
7928 bfd_vma r2off;
7929
7930 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7931 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7932 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7933 loc += 4;
97b639ba 7934 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7935 loc += 4;
97b639ba 7936 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7937 loc += 4;
7938 off -= 12;
7939 size = 16;
7940 }
97b639ba 7941 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 7942
7943 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 7944
7945 if (info->emitrelocations)
7946 {
7947 Elf_Internal_Rela *relocs, *r;
7948 struct bfd_elf_section_data *elfsec_data;
7949
7950 elfsec_data = elf_section_data (stub_entry->stub_sec);
7951 relocs = elfsec_data->relocs;
7952 if (relocs == NULL)
7953 {
7954 bfd_size_type relsize;
7955 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7956 relocs = bfd_alloc (htab->stub_bfd, relsize);
7957 if (relocs == NULL)
7958 return FALSE;
7959 elfsec_data->relocs = relocs;
7960 elfsec_data->rel_hdr.sh_size = relsize;
7961 elfsec_data->rel_hdr.sh_entsize = 24;
7962 stub_entry->stub_sec->reloc_count = 0;
7963 }
7964 r = relocs + stub_entry->stub_sec->reloc_count;
7965 stub_entry->stub_sec->reloc_count += 1;
7966 r->r_offset = loc - stub_entry->stub_sec->contents;
7967 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7968 r->r_addend = dest;
7969 if (stub_entry->h != NULL)
7970 {
7971 struct elf_link_hash_entry **hashes;
7972 unsigned long symndx;
7973 struct ppc_link_hash_entry *h;
7974
7975 hashes = elf_sym_hashes (htab->stub_bfd);
7976 if (hashes == NULL)
7977 {
7978 bfd_size_type hsize;
7979
7980 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7981 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7982 if (hashes == NULL)
7983 return FALSE;
7984 elf_sym_hashes (htab->stub_bfd) = hashes;
7985 htab->stub_globals = 1;
7986 }
7987 symndx = htab->stub_globals++;
7988 h = stub_entry->h;
7989 hashes[symndx] = &h->elf;
7990 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7991 if (h->oh != NULL && h->oh->is_func)
7992 h = h->oh;
7993 if (h->elf.root.u.def.section != stub_entry->target_section)
7994 /* H is an opd symbol. The addend must be zero. */
7995 r->r_addend = 0;
7996 else
7997 {
7998 off = (h->elf.root.u.def.value
7999 + h->elf.root.u.def.section->output_offset
8000 + h->elf.root.u.def.section->output_section->vma);
8001 r->r_addend -= off;
8002 }
8003 }
8004 }
721956f4 8005 break;
e86ce104 8006
721956f4 8007 case ppc_stub_plt_branch:
ad8e1ba5 8008 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8009 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8010 stub_entry->root.string + 9,
b34976b6 8011 FALSE, FALSE);
721956f4
AM		 8012 if (br_entry == NULL)
8013 {
8014 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8015 stub_entry->root.string + 9);
b34976b6
AM		 8016 htab->stub_error = TRUE;
8017 return FALSE;
721956f4
AM		 8018 }
8019
8020 off = (stub_entry->target_value
8021 + stub_entry->target_section->output_offset
8022 + stub_entry->target_section->output_section->vma);
8023
4ce794b7
AM		 8024 bfd_put_64 (htab->brlt->owner, off,
8025 htab->brlt->contents + br_entry->offset);
721956f4 8026
ee75fd95 8027 if (htab->relbrlt != NULL)
721956f4
AM		 8028 {
8029 /* Create a reloc for the branch lookup table entry. */
8030 Elf_Internal_Rela rela;
ad8e1ba5 8031 bfd_byte *rl;
5d1634d7 8032
721956f4 8033 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8034 + htab->brlt->output_offset
8035 + htab->brlt->output_section->vma);
721956f4
AM		 8036 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8037 rela.r_addend = off;
8038
4ce794b7
AM		 8039 rl = htab->relbrlt->contents;
8040 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8041 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 8042 }
8043
8044 off = (br_entry->offset
4ce794b7
AM		 8045 + htab->brlt->output_offset
8046 + htab->brlt->output_section->vma
8047 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8048 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8049
ad8e1ba5 8050 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8051 {
8052 (*_bfd_error_handler)
e86ce104 8053 (_("linkage table error against `%s'"),
721956f4 8054 stub_entry->root.string);
5d1634d7 8055 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8056 htab->stub_error = TRUE;
8057 return FALSE;
5d1634d7 8058 }
41bd81ab 8059
721956f4 8060 indx = off;
ad8e1ba5
AM		 8061 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8062 {
97b639ba 8063 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8064 loc += 4;
97b639ba 8065 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 8066 size = 16;
8067 }
8068 else
8069 {
8070 bfd_vma r2off;
8071
8072 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8073 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8074 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8075 loc += 4;
97b639ba 8076 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8077 loc += 4;
97b639ba 8078 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8079 loc += 4;
97b639ba 8080 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8081 loc += 4;
97b639ba 8082 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8083 size = 28;
8084 }
8085 loc += 4;
97b639ba 8086 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8087 loc += 4;
97b639ba 8088 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8089 break;
5d1634d7 8090
721956f4 8091 case ppc_stub_plt_call:
c862ae31
AM		 8092 /* Do the best we can for shared libraries built without
8093 exporting ".foo" for each "foo". This can happen when symbol
8094 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8095 if (stub_entry->h->oh != NULL
8096 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8097 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8098 {
8099 /* Point the symbol at the stub. There may be multiple stubs,
8100 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8101 defined somewhere. Maybe defining the symbol in the stub
8102 section is a silly idea. If we didn't do this, htab->top_id
8103 could disappear. */
34814b9f
AM		 8104 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8105 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8106 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8107 }
8108
721956f4 8109 /* Now build the stub. */
411e1bfb
AM		 8110 off = (bfd_vma) -1;
8111 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8112 if (ent->addend == stub_entry->addend)
8113 {
8114 off = ent->plt.offset;
8115 break;
8116 }
721956f4
AM		 8117 if (off >= (bfd_vma) -2)
8118 abort ();
8119
8120 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8121 off += (htab->plt->output_offset
8122 + htab->plt->output_section->vma
8123 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8124 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8125
ad8e1ba5 8126 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8127 {
8128 (*_bfd_error_handler)
8129 (_("linkage table error against `%s'"),
8130 stub_entry->h->elf.root.root.string);
8131 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8132 htab->stub_error = TRUE;
8133 return FALSE;
721956f4
AM		 8134 }
8135
97b639ba 8136 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8137 size = p - loc;
8138 break;
8139
8140 default:
8141 BFD_FAIL ();
b34976b6 8142 return FALSE;
721956f4
AM		 8143 }
8144
eea6121a 8145 stub_entry->stub_sec->size += size;
97b639ba 8146
ee75fd95 8147 if (htab->emit_stub_syms)
97b639ba
AM		 8148 {
8149 struct elf_link_hash_entry *h;
ee75fd95
AM		 8150 size_t len1, len2;
8151 char *name;
8152 const char *const stub_str[] = { "long_branch",
8153 "long_branch_r2off",
8154 "plt_branch",
8155 "plt_branch_r2off",
8156 "plt_call" };
8157
8158 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8159 len2 = strlen (stub_entry->root.string);
8160 name = bfd_malloc (len1 + len2 + 2);
8161 if (name == NULL)
8162 return FALSE;
8163 memcpy (name, stub_entry->root.string, 9);
8164 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8165 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8166 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8167 if (h == NULL)
8168 return FALSE;
8169 if (h->root.type == bfd_link_hash_new)
8170 {
8171 h->root.type = bfd_link_hash_defined;
8172 h->root.u.def.section = stub_entry->stub_sec;
8173 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8174 h->ref_regular = 1;
8175 h->def_regular = 1;
8176 h->ref_regular_nonweak = 1;
8177 h->forced_local = 1;
8178 h->non_elf = 0;
97b639ba
AM		 8179 }
8180 }
8181
b34976b6 8182 return TRUE;
721956f4
AM		 8183}
8184
8185/* As above, but don't actually build the stub. Just bump offset so
8186 we know stub section sizes, and select plt_branch stubs where
8187 long_branch stubs won't do. */
8188
b34976b6 8189static bfd_boolean
4ce794b7 8190ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8191{
8192 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8193 struct bfd_link_info *info;
721956f4
AM		 8194 struct ppc_link_hash_table *htab;
8195 bfd_vma off;
8196 int size;
8197
8198 /* Massage our args to the form they really have. */
8199 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8200 info = in_arg;
8201
8202 htab = ppc_hash_table (info);
721956f4
AM		 8203
8204 if (stub_entry->stub_type == ppc_stub_plt_call)
8205 {
411e1bfb 8206 struct plt_entry *ent;
58ac9f71 8207 off = (bfd_vma) -1;
411e1bfb
AM		 8208 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8209 if (ent->addend == stub_entry->addend)
8210 {
8211 off = ent->plt.offset & ~(bfd_vma) 1;
8212 break;
8213 }
58ac9f71 8214 if (off >= (bfd_vma) -2)
411e1bfb 8215 abort ();
4ce794b7
AM		 8216 off += (htab->plt->output_offset
8217 + htab->plt->output_section->vma
8218 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8219 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8220
ad8e1ba5 8221 size = PLT_CALL_STUB_SIZE;
4ce794b7 8222 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8223 size += 4;
8224 }
8225 else
8226 {
ad8e1ba5
AM		 8227 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8228 variants. */
721956f4
AM		 8229 off = (stub_entry->target_value
8230 + stub_entry->target_section->output_offset
8231 + stub_entry->target_section->output_section->vma);
eea6121a 8232 off -= (stub_entry->stub_sec->size
721956f4
AM		 8233 + stub_entry->stub_sec->output_offset
8234 + stub_entry->stub_sec->output_section->vma);
8235
ad8e1ba5
AM		 8236 /* Reset the stub type from the plt variant in case we now
8237 can reach with a shorter stub. */
8238 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8239 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8240
8241 size = 4;
8242 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8243 {
8244 off -= 12;
8245 size = 16;
8246 }
8247
8248 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8249 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8250 {
8251 struct ppc_branch_hash_entry *br_entry;
8252
8253 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8254 stub_entry->root.string + 9,
b34976b6 8255 TRUE, FALSE);
721956f4
AM		 8256 if (br_entry == NULL)
8257 {
8258 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8259 stub_entry->root.string + 9);
b34976b6
AM		 8260 htab->stub_error = TRUE;
8261 return FALSE;
721956f4
AM		 8262 }
8263
8264 if (br_entry->iter != htab->stub_iteration)
8265 {
8266 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8267 br_entry->offset = htab->brlt->size;
8268 htab->brlt->size += 8;
63bc6f6c 8269
ee75fd95 8270 if (htab->relbrlt != NULL)
eea6121a 8271 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8272 }
ad8e1ba5
AM		 8273
8274 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8275 size = 16;
ad8e1ba5
AM		 8276 if (stub_entry->stub_type != ppc_stub_plt_branch)
8277 size = 28;
721956f4 8278 }
ee75fd95
AM		 8279
8280 if (info->emitrelocations
8281 && (stub_entry->stub_type == ppc_stub_long_branch
8282 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8283 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8284 }
8285
eea6121a 8286 stub_entry->stub_sec->size += size;
b34976b6 8287 return TRUE;
721956f4
AM		 8288}
8289
8290/* Set up various things so that we can make a list of input sections
8291 for each output section included in the link. Returns -1 on error,
cedb70c5 8292 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8293
8294int
4c52953f
AM		 8295ppc64_elf_setup_section_lists (bfd *output_bfd,
8296 struct bfd_link_info *info,
8297 int no_multi_toc)
721956f4
AM		 8298{
8299 bfd *input_bfd;
734b6cf9 8300 int top_id, top_index, id;
721956f4 8301 asection *section;
734b6cf9 8302 asection **input_list;
721956f4
AM		 8303 bfd_size_type amt;
8304 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8305
4c52953f
AM		 8306 htab->no_multi_toc = no_multi_toc;
8307
4ce794b7 8308 if (htab->brlt == NULL)
721956f4
AM		 8309 return 0;
8310
1e2f5b6e 8311 /* Find the top input section id. */
3d6f9012 8312 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8313 input_bfd != NULL;
8314 input_bfd = input_bfd->link_next)
8315 {
721956f4
AM		 8316 for (section = input_bfd->sections;
8317 section != NULL;
8318 section = section->next)
8319 {
8320 if (top_id < section->id)
8321 top_id = section->id;
8322 }
8323 }
721956f4 8324
8f3bab57 8325 htab->top_id = top_id;
721956f4 8326 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8327 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8328 if (htab->stub_group == NULL)
8329 return -1;
8330
3d6f9012
AM		 8331 /* Set toc_off for com, und, abs and ind sections. */
8332 for (id = 0; id < 3; id++)
8333 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8334
3d6f9012 8335 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8336
8337 /* We can't use output_bfd->section_count here to find the top output
8338 section index as some sections may have been removed, and
8423293d 8339 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8340 for (section = output_bfd->sections, top_index = 0;
8341 section != NULL;
8342 section = section->next)
8343 {
8344 if (top_index < section->index)
8345 top_index = section->index;
8346 }
8347
8348 htab->top_index = top_index;
8349 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8350 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8351 htab->input_list = input_list;
8352 if (input_list == NULL)
8353 return -1;
8354
721956f4
AM		 8355 return 1;
8356}
8357
e717da7e
AM		 8358/* The linker repeatedly calls this function for each TOC input section
8359 and linker generated GOT section. Group input bfds such that the toc
8360 within a group is less than 64k in size. Will break with cute linker
8361 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8362
8363void
4ce794b7 8364ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8365{
8366 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8367
4c52953f
AM		 8368 if (!htab->no_multi_toc)
8369 {
8370 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8371 bfd_vma off = addr - htab->toc_curr;
8372
8373 if (off + isec->size > 0x10000)
8374 htab->toc_curr = addr;
99877b66 8375
4c52953f
AM		 8376 elf_gp (isec->owner) = (htab->toc_curr
8377 - elf_gp (isec->output_section->owner)
8378 + TOC_BASE_OFF);
8379 }
ad8e1ba5
AM		 8380}
8381
8382/* Called after the last call to the above function. */
8383
8384void
4c52953f 8385ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8386{
8387 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8388
4c52953f
AM		 8389 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8390
ad8e1ba5
AM		 8391 /* toc_curr tracks the TOC offset used for code sections below in
8392 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8393 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8394}
8395
9b5ecbd0
AM		 8396/* No toc references were found in ISEC. If the code in ISEC makes no
8397 calls, then there's no need to use toc adjusting stubs when branching
8398 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8399 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8400 needed, and 2 if a cyclical call-graph was found but no other reason
8401 for a stub was detected. If called from the top level, a return of
8402 2 means the same as a return of 0. */
9b5ecbd0
AM		 8403
8404static int
4ce794b7 8405toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8406{
4c52953f
AM		 8407 Elf_Internal_Rela *relstart, *rel;
8408 Elf_Internal_Sym *local_syms;
9b5ecbd0 8409 int ret;
4c52953f 8410 struct ppc_link_hash_table *htab;
9b5ecbd0 8411
772119ce
AM		 8412 /* We know none of our code bearing sections will need toc stubs. */
8413 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8414 return 0;
8415
eea6121a 8416 if (isec->size == 0)
082c50f8
AM		 8417 return 0;
8418
4c52953f
AM		 8419 if (isec->output_section == NULL)
8420 return 0;
8421
9b5ecbd0
AM		 8422 /* Hack for linux kernel. .fixup contains branches, but only back to
8423 the function that hit an exception. */
4c52953f
AM		 8424 if (strcmp (isec->name, ".fixup") == 0)
8425 return 0;
9b5ecbd0 8426
4c52953f
AM		 8427 if (isec->reloc_count == 0)
8428 return 0;
8429
8430 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8431 info->keep_memory);
8432 if (relstart == NULL)
8433 return -1;
8434
8435 /* Look for branches to outside of this section. */
8436 local_syms = NULL;
8437 ret = 0;
8438 htab = ppc_hash_table (info);
8439 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8440 {
4c52953f
AM		 8441 enum elf_ppc64_reloc_type r_type;
8442 unsigned long r_symndx;
8443 struct elf_link_hash_entry *h;
8444 Elf_Internal_Sym *sym;
8445 asection *sym_sec;
8446 long *opd_adjust;
8447 bfd_vma sym_value;
8448 bfd_vma dest;
8449
8450 r_type = ELF64_R_TYPE (rel->r_info);
8451 if (r_type != R_PPC64_REL24
8452 && r_type != R_PPC64_REL14
8453 && r_type != R_PPC64_REL14_BRTAKEN
8454 && r_type != R_PPC64_REL14_BRNTAKEN)
8455 continue;
8456
8457 r_symndx = ELF64_R_SYM (rel->r_info);
8458 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8459 isec->owner))
9b5ecbd0 8460 {
4c52953f
AM		 8461 ret = -1;
8462 break;
9b5ecbd0 8463 }
9b5ecbd0 8464
2917689a
AM		 8465 /* Calls to dynamic lib functions go through a plt call stub
8466 that uses r2. Branches to undefined symbols might be a call
8467 using old-style dot symbols that can be satisfied by a plt
8468 call into a new-style dynamic library. */
4c52953f 8469 if (sym_sec == NULL)
2917689a
AM		 8470 {
8471 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8472 if (eh != NULL
8473 && eh->oh != NULL
8474 && eh->oh->elf.plt.plist != NULL)
8475 {
8476 ret = 1;
8477 break;
8478 }
4c52953f 8479
2917689a
AM		 8480 /* Ignore other undefined symbols. */
8481 continue;
8482 }
8483
8484 /* Assume branches to other sections not included in the link need
8485 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8486 if (sym_sec->output_section == NULL)
8487 {
8488 ret = 1;
8489 break;
8490 }
8491
8492 if (h == NULL)
8493 sym_value = sym->st_value;
8494 else
8495 {
8496 if (h->root.type != bfd_link_hash_defined
8497 && h->root.type != bfd_link_hash_defweak)
8498 abort ();
8499 sym_value = h->root.u.def.value;
8500 }
8501 sym_value += rel->r_addend;
8502
8503 /* If this branch reloc uses an opd sym, find the code section. */
8504 opd_adjust = get_opd_info (sym_sec);
8505 if (opd_adjust != NULL)
8506 {
4c52953f
AM		 8507 if (h == NULL)
8508 {
8509 long adjust;
8510
8511 adjust = opd_adjust[sym->st_value / 8];
8512 if (adjust == -1)
8513 /* Assume deleted functions won't ever be called. */
8514 continue;
8515 sym_value += adjust;
8516 }
8517
8518 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8519 if (dest == (bfd_vma) -1)
8520 continue;
8521 }
8522 else
8523 dest = (sym_value
8524 + sym_sec->output_offset
8525 + sym_sec->output_section->vma);
8526
8527 /* Ignore branch to self. */
8528 if (sym_sec == isec)
8529 continue;
8530
8531 /* If the called function uses the toc, we need a stub. */
8532 if (sym_sec->has_toc_reloc
8533 || sym_sec->makes_toc_func_call)
8534 {
8535 ret = 1;
8536 break;
8537 }
8538
8539 /* Assume any branch that needs a long branch stub might in fact
8540 need a plt_branch stub. A plt_branch stub uses r2. */
8541 else if (dest - (isec->output_offset
8542 + isec->output_section->vma
8543 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8544 {
8545 ret = 1;
8546 break;
8547 }
4c52953f
AM		 8548
8549 /* If calling back to a section in the process of being tested, we
8550 can't say for sure that no toc adjusting stubs are needed, so
8551 don't return zero. */
8552 else if (sym_sec->call_check_in_progress)
8553 ret = 2;
8554
8555 /* Branches to another section that itself doesn't have any TOC
8556 references are OK. Recursively call ourselves to check. */
8557 else if (sym_sec->id <= htab->top_id
8558 && htab->stub_group[sym_sec->id].toc_off == 0)
8559 {
8560 int recur;
8561
8562 /* Mark current section as indeterminate, so that other
8563 sections that call back to current won't be marked as
8564 known. */
8565 isec->call_check_in_progress = 1;
8566 recur = toc_adjusting_stub_needed (info, sym_sec);
8567 isec->call_check_in_progress = 0;
8568
8569 if (recur < 0)
8570 {
8571 /* An error. Exit. */
8572 ret = -1;
8573 break;
8574 }
8575 else if (recur <= 1)
8576 {
8577 /* Known result. Mark as checked and set section flag. */
8578 htab->stub_group[sym_sec->id].toc_off = 1;
8579 if (recur != 0)
8580 {
8581 sym_sec->makes_toc_func_call = 1;
8582 ret = 1;
8583 break;
8584 }
8585 }
8586 else
8587 {
8588 /* Unknown result. Continue checking. */
8589 ret = 2;
8590 }
8591 }
9b5ecbd0
AM		 8592 }
8593
4c52953f
AM		 8594 if (local_syms != NULL
8595 && (elf_tdata (isec->owner)->symtab_hdr.contents
8596 != (unsigned char *) local_syms))
8597 free (local_syms);
8598 if (elf_section_data (isec)->relocs != relstart)
8599 free (relstart);
8600
9b5ecbd0
AM		 8601 return ret;
8602}
8603
721956f4
AM		 8604/* The linker repeatedly calls this function for each input section,
8605 in the order that input sections are linked into output sections.
8606 Build lists of input sections to determine groupings between which
8607 we may insert linker stubs. */
8608
9b5ecbd0 8609bfd_boolean
4ce794b7 8610ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8611{
8612 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8613
734b6cf9
AM		 8614 if ((isec->output_section->flags & SEC_CODE) != 0
8615 && isec->output_section->index <= htab->top_index)
721956f4 8616 {
734b6cf9 8617 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8618 /* Steal the link_sec pointer for our list. */
721956f4 8619#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8620 /* This happens to make the list in reverse order,
8621 which is what we want. */
734b6cf9
AM		 8622 PREV_SEC (isec) = *list;
8623 *list = isec;
721956f4 8624 }
ad8e1ba5 8625
4c52953f 8626 if (htab->multi_toc_needed)
9b5ecbd0 8627 {
4c52953f
AM		 8628 /* If a code section has a function that uses the TOC then we need
8629 to use the right TOC (obviously). Also, make sure that .opd gets
8630 the correct TOC value for R_PPC64_TOC relocs that don't have or
8631 can't find their function symbol (shouldn't ever happen now). */
8632 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8633 {
8634 if (elf_gp (isec->owner) != 0)
8635 htab->toc_curr = elf_gp (isec->owner);
8636 }
8637 else if (htab->stub_group[isec->id].toc_off == 0)
8638 {
8639 int ret = toc_adjusting_stub_needed (info, isec);
8640 if (ret < 0)
8641 return FALSE;
8642 else
8643 isec->makes_toc_func_call = ret & 1;
8644 }
9b5ecbd0 8645 }
ad8e1ba5
AM		 8646
8647 /* Functions that don't use the TOC can belong in any TOC group.
8648 Use the last TOC base. This happens to make _init and _fini
8649 pasting work. */
8650 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8651 return TRUE;
721956f4
AM		 8652}
8653
8654/* See whether we can group stub sections together. Grouping stub
8655 sections may result in fewer stubs. More importantly, we need to
8656 put all .init* and .fini* stubs at the beginning of the .init or
8657 .fini output sections respectively, because glibc splits the
8658 _init and _fini functions into multiple parts. Putting a stub in
8659 the middle of a function is not a good idea. */
8660
8661static void
4ce794b7
AM		 8662group_sections (struct ppc_link_hash_table *htab,
8663 bfd_size_type stub_group_size,
8664 bfd_boolean stubs_always_before_branch)
721956f4 8665{
734b6cf9
AM		 8666 asection **list = htab->input_list + htab->top_index;
8667 do
721956f4 8668 {
734b6cf9
AM		 8669 asection *tail = *list;
8670 while (tail != NULL)
721956f4 8671 {
734b6cf9
AM		 8672 asection *curr;
8673 asection *prev;
8674 bfd_size_type total;
8675 bfd_boolean big_sec;
8676 bfd_vma curr_toc;
8677
8678 curr = tail;
eea6121a 8679 total = tail->size;
734b6cf9
AM		 8680 big_sec = total >= stub_group_size;
8681 curr_toc = htab->stub_group[tail->id].toc_off;
8682
8683 while ((prev = PREV_SEC (curr)) != NULL
8684 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8685 < stub_group_size)
8686 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8687 curr = prev;
8688
8689 /* OK, the size from the start of CURR to the end is less
8690 than stub_group_size and thus can be handled by one stub
8691 section. (or the tail section is itself larger than
8692 stub_group_size, in which case we may be toast.) We
8693 should really be keeping track of the total size of stubs
8694 added here, as stubs contribute to the final output
8695 section size. That's a little tricky, and this way will
8696 only break if stubs added make the total size more than
8697 2^25, ie. for the default stub_group_size, if stubs total
8698 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8699 do
721956f4
AM		 8700 {
8701 prev = PREV_SEC (tail);
734b6cf9 8702 /* Set up this stub group. */
721956f4
AM		 8703 htab->stub_group[tail->id].link_sec = curr;
8704 }
734b6cf9
AM		 8705 while (tail != curr && (tail = prev) != NULL);
8706
8707 /* But wait, there's more! Input sections up to stub_group_size
8708 bytes before the stub section can be handled by it too.
8709 Don't do this if we have a really large section after the
8710 stubs, as adding more stubs increases the chance that
8711 branches may not reach into the stub section. */
8712 if (!stubs_always_before_branch && !big_sec)
8713 {
8714 total = 0;
8715 while (prev != NULL
8716 && ((total += tail->output_offset - prev->output_offset)
8717 < stub_group_size)
8718 && htab->stub_group[prev->id].toc_off == curr_toc)
8719 {
8720 tail = prev;
8721 prev = PREV_SEC (tail);
8722 htab->stub_group[tail->id].link_sec = curr;
8723 }
8724 }
8725 tail = prev;
721956f4
AM		 8726 }
8727 }
734b6cf9
AM		 8728 while (list-- != htab->input_list);
8729 free (htab->input_list);
721956f4
AM		 8730#undef PREV_SEC
8731}
8732
721956f4
AM		 8733/* Determine and set the size of the stub section for a final link.
8734
8735 The basic idea here is to examine all the relocations looking for
8736 PC-relative calls to a target that is unreachable with a "bl"
8737 instruction. */
8738
b34976b6 8739bfd_boolean
4ce794b7 8740ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8741 struct bfd_link_info *info,
8742 bfd_signed_vma group_size,
8743 asection *(*add_stub_section) (const char *, asection *),
8744 void (*layout_sections_again) (void))
721956f4
AM		 8745{
8746 bfd_size_type stub_group_size;
b34976b6 8747 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8749
8750 /* Stash our params away. */
721956f4
AM		 8751 htab->add_stub_section = add_stub_section;
8752 htab->layout_sections_again = layout_sections_again;
8753 stubs_always_before_branch = group_size < 0;
8754 if (group_size < 0)
8755 stub_group_size = -group_size;
8756 else
8757 stub_group_size = group_size;
8758 if (stub_group_size == 1)
8759 {
8760 /* Default values. */
58ac9f71
AM		 8761 if (stubs_always_before_branch)
8762 {
8763 stub_group_size = 0x1e00000;
8764 if (htab->has_14bit_branch)
8765 stub_group_size = 0x7800;
8766 }
8767 else
8768 {
8769 stub_group_size = 0x1c00000;
8770 if (htab->has_14bit_branch)
8771 stub_group_size = 0x7000;
8772 }
721956f4
AM		 8773 }
8774
8775 group_sections (htab, stub_group_size, stubs_always_before_branch);
8776
721956f4
AM		 8777 while (1)
8778 {
8779 bfd *input_bfd;
8780 unsigned int bfd_indx;
8781 asection *stub_sec;
b34976b6 8782 bfd_boolean stub_changed;
721956f4
AM		 8783
8784 htab->stub_iteration += 1;
b34976b6 8785 stub_changed = FALSE;
721956f4
AM		 8786
8787 for (input_bfd = info->input_bfds, bfd_indx = 0;
8788 input_bfd != NULL;
8789 input_bfd = input_bfd->link_next, bfd_indx++)
8790 {
8791 Elf_Internal_Shdr *symtab_hdr;
8792 asection *section;
6cdc0ccc 8793 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8794
8795 /* We'll need the symbol table in a second. */
8796 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8797 if (symtab_hdr->sh_info == 0)
8798 continue;
8799
721956f4
AM		 8800 /* Walk over each section attached to the input bfd. */
8801 for (section = input_bfd->sections;
8802 section != NULL;
8803 section = section->next)
8804 {
721956f4 8805 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8806
8807 /* If there aren't any relocs, then there's nothing more
8808 to do. */
8809 if ((section->flags & SEC_RELOC) == 0
8810 || section->reloc_count == 0)
8811 continue;
8812
8813 /* If this section is a link-once section that will be
8814 discarded, then don't create any stubs. */
8815 if (section->output_section == NULL
8816 || section->output_section->owner != output_bfd)
8817 continue;
8818
1e2f5b6e
AM		 8819 /* Get the relocs. */
8820 internal_relocs
4ce794b7 8821 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8822 info->keep_memory);
721956f4 8823 if (internal_relocs == NULL)
1e2f5b6e 8824 goto error_ret_free_local;
721956f4
AM		 8825
8826 /* Now examine each relocation. */
8827 irela = internal_relocs;
8828 irelaend = irela + section->reloc_count;
8829 for (; irela < irelaend; irela++)
8830 {
4ce794b7
AM		 8831 enum elf_ppc64_reloc_type r_type;
8832 unsigned int r_indx;
721956f4
AM		 8833 enum ppc_stub_type stub_type;
8834 struct ppc_stub_hash_entry *stub_entry;
8387904d 8835 asection *sym_sec, *code_sec;
721956f4
AM		 8836 bfd_vma sym_value;
8837 bfd_vma destination;
8843416a 8838 bfd_boolean ok_dest;
721956f4 8839 struct ppc_link_hash_entry *hash;
8387904d 8840 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8841 struct elf_link_hash_entry *h;
8842 Elf_Internal_Sym *sym;
721956f4
AM		 8843 char *stub_name;
8844 const asection *id_sec;
8387904d 8845 long *opd_adjust;
721956f4
AM		 8846
8847 r_type = ELF64_R_TYPE (irela->r_info);
8848 r_indx = ELF64_R_SYM (irela->r_info);
8849
4ce794b7 8850 if (r_type >= R_PPC64_max)
721956f4
AM		 8851 {
8852 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8853 goto error_ret_free_internal;
721956f4
AM		 8854 }
8855
8856 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8857 if (r_type != R_PPC64_REL24
8858 && r_type != R_PPC64_REL14
8859 && r_type != R_PPC64_REL14_BRTAKEN
8860 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8861 continue;
8862
8863 /* Now determine the call target, its name, value,
8864 section. */
411e1bfb
AM		 8865 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8866 r_indx, input_bfd))
8867 goto error_ret_free_internal;
8868 hash = (struct ppc_link_hash_entry *) h;
8869
8843416a 8870 ok_dest = FALSE;
8387904d 8871 fdh = NULL;
411e1bfb 8872 if (hash == NULL)
721956f4 8873 {
411e1bfb 8874 sym_value = sym->st_value;
8843416a 8875 ok_dest = TRUE;
721956f4
AM		 8876 }
8877 else
8878 {
411e1bfb 8879 sym_value = 0;
99877b66
AM		 8880 /* Recognise an old ABI func code entry sym, and
8881 use the func descriptor sym instead. */
ceb1f1ef 8882 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 8883 && (fdh = get_fdh (hash, htab)) != NULL)
8884 {
8387904d
AM		 8885 if (fdh->elf.root.type == bfd_link_hash_defined
8886 || fdh->elf.root.type == bfd_link_hash_defweak)
8887 {
8888 sym_sec = fdh->elf.root.u.def.section;
8889 sym_value = fdh->elf.root.u.def.value;
8890 if (sym_sec->output_section != NULL)
8891 ok_dest = TRUE;
8892 }
99877b66
AM		 8893 else
8894 fdh = NULL;
8387904d
AM		 8895 }
8896 else if (hash->elf.root.type == bfd_link_hash_defined
8897 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8898 {
721956f4
AM		 8899 sym_value = hash->elf.root.u.def.value;
8900 if (sym_sec->output_section != NULL)
8843416a 8901 ok_dest = TRUE;
721956f4
AM		 8902 }
8903 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8904 ;
8905 else if (hash->elf.root.type == bfd_link_hash_undefined)
8906 ;
8907 else
8908 {
8909 bfd_set_error (bfd_error_bad_value);
8910 goto error_ret_free_internal;
8911 }
8912 }
8913
8843416a
AM		 8914 destination = 0;
8915 if (ok_dest)
8916 {
8917 sym_value += irela->r_addend;
8918 destination = (sym_value
8919 + sym_sec->output_offset
8920 + sym_sec->output_section->vma);
8921 }
8922
8387904d
AM		 8923 code_sec = sym_sec;
8924 opd_adjust = get_opd_info (sym_sec);
8925 if (opd_adjust != NULL)
8926 {
8927 bfd_vma dest;
8928
8929 if (hash == NULL)
8930 {
3f764659 8931 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 8932 if (adjust == -1)
8933 continue;
8934 sym_value += adjust;
8935 }
8936 dest = opd_entry_value (sym_sec, sym_value,
8937 &code_sec, &sym_value);
8938 if (dest != (bfd_vma) -1)
8939 {
8940 destination = dest;
8941 if (fdh != NULL)
8942 {
8943 /* Fixup old ABI sym to point at code
8944 entry. */
99877b66 8945 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 8946 hash->elf.root.u.def.section = code_sec;
8947 hash->elf.root.u.def.value = sym_value;
8948 }
8949 }
8950 }
8951
721956f4
AM		 8952 /* Determine what (if any) linker stub is needed. */
8953 stub_type = ppc_type_of_stub (section, irela, &hash,
8954 destination);
ad8e1ba5
AM		 8955
8956 if (stub_type != ppc_stub_plt_call)
8957 {
8958 /* Check whether we need a TOC adjusting stub.
8959 Since the linker pastes together pieces from
8960 different object files when creating the
8961 _init and _fini functions, it may be that a
8962 call to what looks like a local sym is in
8963 fact a call needing a TOC adjustment. */
8387904d
AM		 8964 if (code_sec != NULL
8965 && code_sec->output_section != NULL
8966 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 8967 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 8968 && (code_sec->has_toc_reloc
8969 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 8970 stub_type = ppc_stub_long_branch_r2off;
8971 }
8972
721956f4
AM		 8973 if (stub_type == ppc_stub_none)
8974 continue;
8975
411e1bfb
AM		 8976 /* __tls_get_addr calls might be eliminated. */
8977 if (stub_type != ppc_stub_plt_call
8978 && hash != NULL
8387904d
AM		 8979 && (hash == htab->tls_get_addr
8980 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 8981 && section->has_tls_reloc
8982 && irela != internal_relocs)
8983 {
8984 /* Get tls info. */
e7b938ca 8985 char *tls_mask;
411e1bfb 8986
0d4792f7 8987 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 8988 irela - 1, input_bfd))
8989 goto error_ret_free_internal;
e7b938ca 8990 if (*tls_mask != 0)
411e1bfb
AM		 8991 continue;
8992 }
8993
721956f4
AM		 8994 /* Support for grouping stub sections. */
8995 id_sec = htab->stub_group[section->id].link_sec;
8996
8997 /* Get the name of this stub. */
8998 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8999 if (!stub_name)
9000 goto error_ret_free_internal;
9001
9002 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9003 stub_name, FALSE, FALSE);
721956f4
AM		 9004 if (stub_entry != NULL)
9005 {
9006 /* The proper stub has already been created. */
9007 free (stub_name);
9008 continue;
9009 }
9010
9011 stub_entry = ppc_add_stub (stub_name, section, htab);
9012 if (stub_entry == NULL)
9013 {
9014 free (stub_name);
6cdc0ccc
AM		 9015 error_ret_free_internal:
9016 if (elf_section_data (section)->relocs == NULL)
9017 free (internal_relocs);
9018 error_ret_free_local:
9019 if (local_syms != NULL
9020 && (symtab_hdr->contents
9021 != (unsigned char *) local_syms))
9022 free (local_syms);
b34976b6 9023 return FALSE;
721956f4
AM		 9024 }
9025
ad8e1ba5 9026 stub_entry->stub_type = stub_type;
721956f4 9027 stub_entry->target_value = sym_value;
8387904d 9028 stub_entry->target_section = code_sec;
721956f4 9029 stub_entry->h = hash;
411e1bfb 9030 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9031
9032 if (stub_entry->h != NULL)
9033 htab->stub_globals += 1;
9034
b34976b6 9035 stub_changed = TRUE;
721956f4
AM		 9036 }
9037
9038 /* We're done with the internal relocs, free them. */
6cdc0ccc 9039 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9040 free (internal_relocs);
721956f4 9041 }
6cdc0ccc
AM		 9042
9043 if (local_syms != NULL
9044 && symtab_hdr->contents != (unsigned char *) local_syms)
9045 {
9046 if (!info->keep_memory)
9047 free (local_syms);
9048 else
9049 symtab_hdr->contents = (unsigned char *) local_syms;
9050 }
721956f4
AM		 9051 }
9052
9053 if (!stub_changed)
9054 break;
9055
9056 /* OK, we've added some stubs. Find out the new size of the
9057 stub sections. */
9058 for (stub_sec = htab->stub_bfd->sections;
9059 stub_sec != NULL;
9060 stub_sec = stub_sec->next)
e717da7e 9061 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 9062 {
9063 stub_sec->size = 0;
9064 stub_sec->reloc_count = 0;
9065 }
eea6121a
AM		 9066
9067 htab->brlt->size = 0;
ee75fd95 9068 if (htab->relbrlt != NULL)
eea6121a 9069 htab->relbrlt->size = 0;
721956f4 9070
63bc6f6c 9071 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 9072
9073 /* Ask the linker to do its stuff. */
9074 (*htab->layout_sections_again) ();
9075 }
9076
afbe61cf
AM		 9077 /* It would be nice to strip .branch_lt from the output if the
9078 section is empty, but it's too late. If we strip sections here,
9079 the dynamic symbol table is corrupted since the section symbol
9080 for the stripped section isn't written. */
721956f4 9081
b34976b6 9082 return TRUE;
721956f4
AM		 9083}
9084
9085/* Called after we have determined section placement. If sections
805fc799 9086 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9087
805fc799 9088bfd_vma
4ce794b7 9089ppc64_elf_toc (bfd *obfd)
721956f4 9090{
805fc799
AM		 9091 asection *s;
9092 bfd_vma TOCstart;
721956f4 9093
805fc799
AM		 9094 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9095 order. The TOC starts where the first of these sections starts. */
9096 s = bfd_get_section_by_name (obfd, ".got");
9097 if (s == NULL)
9098 s = bfd_get_section_by_name (obfd, ".toc");
9099 if (s == NULL)
9100 s = bfd_get_section_by_name (obfd, ".tocbss");
9101 if (s == NULL)
9102 s = bfd_get_section_by_name (obfd, ".plt");
9103 if (s == NULL)
9104 {
9105 /* This may happen for
9106 o references to TOC base (SYM@toc / TOC[tc0]) without a
9107 .toc directive
9108 o bad linker script
9109 o --gc-sections and empty TOC sections
9110
9111 FIXME: Warn user? */
9112
9113 /* Look for a likely section. We probably won't even be
9114 using TOCstart. */
9115 for (s = obfd->sections; s != NULL; s = s->next)
9116 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9117 == (SEC_ALLOC | SEC_SMALL_DATA))
9118 break;
721956f4 9119 if (s == NULL)
805fc799
AM		 9120 for (s = obfd->sections; s != NULL; s = s->next)
9121 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9122 == (SEC_ALLOC | SEC_SMALL_DATA))
9123 break;
721956f4 9124 if (s == NULL)
805fc799
AM		 9125 for (s = obfd->sections; s != NULL; s = s->next)
9126 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9127 break;
721956f4 9128 if (s == NULL)
805fc799
AM		 9129 for (s = obfd->sections; s != NULL; s = s->next)
9130 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9131 break;
9132 }
721956f4 9133
805fc799
AM		 9134 TOCstart = 0;
9135 if (s != NULL)
9136 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9137
805fc799 9138 return TOCstart;
721956f4
AM		 9139}
9140
9141/* Build all the stubs associated with the current output file.
9142 The stubs are kept in a hash table attached to the main linker
9143 hash table. This function is called via gldelf64ppc_finish. */
9144
b34976b6 9145bfd_boolean
4ce794b7
AM		 9146ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9147 struct bfd_link_info *info,
9148 char **stats)
5d1634d7
AM		 9149{
9150 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9151 asection *stub_sec;
5d1634d7 9152 bfd_byte *p;
e717da7e 9153 int stub_sec_count = 0;
5d1634d7 9154
ad8e1ba5 9155 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9156
9157 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9158 for (stub_sec = htab->stub_bfd->sections;
9159 stub_sec != NULL;
9160 stub_sec = stub_sec->next)
eea6121a
AM		 9161 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9162 && stub_sec->size != 0)
e717da7e 9163 {
eea6121a
AM		 9164 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9165 if (stub_sec->contents == NULL)
9166 return FALSE;
9167 /* We want to check that built size is the same as calculated
9168 size. rawsize is a convenient location to use. */
9169 stub_sec->rawsize = stub_sec->size;
9170 stub_sec->size = 0;
e717da7e 9171 }
5d1634d7 9172
4ce794b7 9173 if (htab->plt != NULL)
5d1634d7 9174 {
9f951329 9175 unsigned int indx;
ad8e1ba5 9176 bfd_vma plt0;
9f951329 9177
721956f4 9178 /* Build the .glink plt call stub. */
4ce794b7
AM		 9179 plt0 = (htab->plt->output_section->vma
9180 + htab->plt->output_offset
9181 - (htab->glink->output_section->vma
9182 + htab->glink->output_offset
ad8e1ba5
AM		 9183 + GLINK_CALL_STUB_SIZE));
9184 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9185 {
ad8e1ba5
AM		 9186 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9187 bfd_set_error (bfd_error_bad_value);
9188 return FALSE;
721956f4 9189 }
721956f4 9190
97b639ba
AM		 9191 if (htab->emit_stub_syms)
9192 {
9193 struct elf_link_hash_entry *h;
9194 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9195 if (h == NULL)
9196 return FALSE;
9197 if (h->root.type == bfd_link_hash_new)
9198 {
9199 h->root.type = bfd_link_hash_defined;
9200 h->root.u.def.section = htab->glink;
9201 h->root.u.def.value = 0;
f5385ebf
AM		 9202 h->ref_regular = 1;
9203 h->def_regular = 1;
9204 h->ref_regular_nonweak = 1;
9205 h->forced_local = 1;
9206 h->non_elf = 0;
97b639ba
AM		 9207 }
9208 }
4ce794b7
AM		 9209 p = htab->glink->contents;
9210 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9211 p += 4;
4ce794b7 9212 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9213 p += 4;
4ce794b7 9214 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9215 p += 4;
4ce794b7 9216 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9217 p += 4;
4ce794b7 9218 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9219 p += 4;
4ce794b7 9220 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9221 p += 4;
4ce794b7 9222 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9223 p += 4;
4ce794b7 9224 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9225 p += 4;
4ce794b7 9226 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9227 p += 4;
4ce794b7 9228 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9229 p += 4;
4ce794b7 9230 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9231 p += 4;
4ce794b7 9232 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9233 p += 4;
4ce794b7 9234 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9235 p += 4;
4ce794b7 9236 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9237 p += 4;
4ce794b7 9238 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9239 p += 4;
4ce794b7 9240 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9241 p += 4;
9242
9f951329
AM		 9243 /* Build the .glink lazy link call stubs. */
9244 indx = 0;
eea6121a 9245 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9246 {
9247 if (indx < 0x8000)
9248 {
4ce794b7 9249 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9250 p += 4;
9251 }
9252 else
9253 {
4ce794b7 9254 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9255 p += 4;
4ce794b7 9256 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9257 p += 4;
9258 }
4ce794b7
AM		 9259 bfd_put_32 (htab->glink->owner,
9260 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9261 indx++;
9f951329
AM		 9262 p += 4;
9263 }
eea6121a 9264 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9265 }
5d1634d7 9266
eea6121a 9267 if (htab->brlt->size != 0)
721956f4 9268 {
4ce794b7 9269 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9270 htab->brlt->size);
4ce794b7 9271 if (htab->brlt->contents == NULL)
b34976b6 9272 return FALSE;
721956f4 9273 }
ee75fd95 9274 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9275 {
9276 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9277 htab->relbrlt->size);
63bc6f6c
AM		 9278 if (htab->relbrlt->contents == NULL)
9279 return FALSE;
9280 }
5d1634d7 9281
721956f4
AM		 9282 /* Build the stubs as directed by the stub hash table. */
9283 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9284
721956f4
AM		 9285 for (stub_sec = htab->stub_bfd->sections;
9286 stub_sec != NULL;
9287 stub_sec = stub_sec->next)
e717da7e
AM		 9288 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9289 {
9290 stub_sec_count += 1;
eea6121a 9291 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9292 break;
9293 }
5d1634d7 9294
721956f4 9295 if (stub_sec != NULL
eea6121a 9296 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9297 {
b34976b6 9298 htab->stub_error = TRUE;
721956f4 9299 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9300 }
721956f4 9301
d2a300cf
AM		 9302 if (htab->stub_error)
9303 return FALSE;
9304
9305 if (stats != NULL)
9306 {
9307 *stats = bfd_malloc (500);
9308 if (*stats == NULL)
9309 return FALSE;
9310
ee75fd95 9311 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9312 " branch %lu\n"
9313 " toc adjust %lu\n"
9314 " long branch %lu\n"
9315 " long toc adj %lu\n"
9316 " plt call %lu"),
e717da7e 9317 stub_sec_count,
ee75fd95 9318 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9319 htab->stub_count[ppc_stub_long_branch - 1],
9320 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9321 htab->stub_count[ppc_stub_plt_branch - 1],
9322 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9323 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9324 }
9325 return TRUE;
5bd4f169
AM		 9326}
9327
99877b66
AM		 9328/* This function undoes the changes made by add_symbol_adjust. */
9329
9330static bfd_boolean
9331undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9332{
9333 struct ppc_link_hash_entry *eh;
9334
9335 if (h->root.type == bfd_link_hash_indirect)
9336 return TRUE;
9337
9338 if (h->root.type == bfd_link_hash_warning)
9339 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9340
9341 eh = (struct ppc_link_hash_entry *) h;
9342 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9343 return TRUE;
9344
9345 eh->elf.root.type = bfd_link_hash_undefined;
9346 return TRUE;
9347}
9348
9349void
9350ppc64_elf_restore_symbols (struct bfd_link_info *info)
9351{
9352 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9353 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9354}
9355
5bd4f169
AM		 9356/* The RELOCATE_SECTION function is called by the ELF backend linker
9357 to handle the relocations for a section.
9358
9359 The relocs are always passed as Rela structures; if the section
9360 actually uses Rel structures, the r_addend field will always be
9361 zero.
9362
9363 This function is responsible for adjust the section contents as
9364 necessary, and (if using Rela relocs and generating a
1049f94e 9365 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9366 necessary.
9367
9368 This function does not have to worry about setting the reloc
9369 address or the reloc symbol index.
9370
9371 LOCAL_SYMS is a pointer to the swapped in local symbols.
9372
9373 LOCAL_SECTIONS is an array giving the section in the input file
9374 corresponding to the st_shndx field of each local symbol.
9375
9376 The global hash table entry for the global symbols can be found
9377 via elf_sym_hashes (input_bfd).
9378
1049f94e 9379 When generating relocatable output, this function must handle
5bd4f169
AM		 9380 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9381 going to be the section symbol corresponding to the output
9382 section, which means that the addend must be adjusted
9383 accordingly. */
9384
b34976b6 9385static bfd_boolean
4ce794b7
AM		 9386ppc64_elf_relocate_section (bfd *output_bfd,
9387 struct bfd_link_info *info,
9388 bfd *input_bfd,
9389 asection *input_section,
9390 bfd_byte *contents,
9391 Elf_Internal_Rela *relocs,
9392 Elf_Internal_Sym *local_syms,
9393 asection **local_sections)
5bd4f169 9394{
65f38f15 9395 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9396 Elf_Internal_Shdr *symtab_hdr;
9397 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9398 Elf_Internal_Rela *rel;
9399 Elf_Internal_Rela *relend;
411e1bfb
AM		 9400 Elf_Internal_Rela outrel;
9401 bfd_byte *loc;
411e1bfb 9402 struct got_entry **local_got_ents;
5bd4f169 9403 bfd_vma TOCstart;
b34976b6
AM		 9404 bfd_boolean ret = TRUE;
9405 bfd_boolean is_opd;
96e0dda4 9406 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9407 bfd_boolean is_power4 = FALSE;
5bd4f169 9408
1049f94e 9409 if (info->relocatable)
b34976b6 9410 return TRUE;
b491616a 9411
65f38f15 9412 /* Initialize howto table if needed. */
5bd4f169 9413 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9414 ppc_howto_init ();
9415
65f38f15 9416 htab = ppc_hash_table (info);
ee75fd95
AM		 9417
9418 /* Don't relocate stub sections. */
9419 if (input_section->owner == htab->stub_bfd)
9420 return TRUE;
9421
411e1bfb 9422 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9423 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9424 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9425 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9426 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9427
5bd4f169
AM		 9428 rel = relocs;
9429 relend = relocs + input_section->reloc_count;
9430 for (; rel < relend; rel++)
9431 {
04c9666a 9432 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9433 bfd_vma addend;
9434 bfd_reloc_status_type r;
9435 Elf_Internal_Sym *sym;
9436 asection *sec;
039b3fef
AM		 9437 struct elf_link_hash_entry *h_elf;
9438 struct ppc_link_hash_entry *h;
9439 struct ppc_link_hash_entry *fdh;
5bd4f169 9440 const char *sym_name;
0d4792f7 9441 unsigned long r_symndx, toc_symndx;
951fd09b 9442 char tls_mask, tls_gd, tls_type;
0d4792f7 9443 char sym_type;
5bd4f169 9444 bfd_vma relocation;
b34976b6
AM		 9445 bfd_boolean unresolved_reloc;
9446 bfd_boolean warned;
50bc7936 9447 unsigned long insn, mask;
721956f4
AM		 9448 struct ppc_stub_hash_entry *stub_entry;
9449 bfd_vma max_br_offset;
9450 bfd_vma from;
5bd4f169 9451
4ce794b7 9452 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9453 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9454
9455 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9456 symbol of the previous ADDR64 reloc. The symbol gives us the
9457 proper TOC base to use. */
9458 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9459 && rel != relocs
9460 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9461 && is_opd)
9462 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9463
4ce794b7
AM		 9464 sym = NULL;
9465 sec = NULL;
039b3fef 9466 h_elf = NULL;
4ce794b7 9467 sym_name = NULL;
b34976b6
AM		 9468 unresolved_reloc = FALSE;
9469 warned = FALSE;
65f38f15 9470
0b13192e 9471 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9472 {
9473 /* It's a local symbol. */
4025353c
AM		 9474 long *opd_adjust;
9475
5bd4f169
AM		 9476 sym = local_syms + r_symndx;
9477 sec = local_sections[r_symndx];
26c61ae5 9478 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9479 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9480 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9481 opd_adjust = get_opd_info (sec);
9482 if (opd_adjust != NULL)
1e2f5b6e 9483 {
3f764659 9484 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9485 if (adjust == -1)
9486 relocation = 0;
9487 else
9488 relocation += adjust;
1e2f5b6e 9489 }
5bd4f169
AM		 9490 }
9491 else
9492 {
b2a8e766
AM		 9493 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9494 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9495 h_elf, sec, relocation,
b2a8e766 9496 unresolved_reloc, warned);
039b3fef
AM		 9497 sym_name = h_elf->root.root.string;
9498 sym_type = h_elf->type;
5bd4f169 9499 }
039b3fef 9500 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9501
951fd09b
AM		 9502 /* TLS optimizations. Replace instruction sequences and relocs
9503 based on information we collected in tls_optimize. We edit
9504 RELOCS so that --emit-relocs will output something sensible
9505 for the final instruction stream. */
9506 tls_mask = 0;
9507 tls_gd = 0;
0d4792f7 9508 toc_symndx = 0;
d881513a 9509 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9510 {
9511 if (h != NULL)
039b3fef 9512 tls_mask = h->tls_mask;
411e1bfb
AM		 9513 else if (local_got_ents != NULL)
9514 {
e7b938ca
AM		 9515 char *lgot_masks;
9516 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9517 tls_mask = lgot_masks[r_symndx];
411e1bfb 9518 }
0d4792f7
AM		 9519 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9520 {
9521 /* Check for toc tls entries. */
9522 char *toc_tls;
9523
9524 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9525 rel, input_bfd))
9526 return FALSE;
9527
9528 if (toc_tls)
9529 tls_mask = *toc_tls;
9530 }
9531 }
9532
9533 /* Check that tls relocs are used with tls syms, and non-tls
9534 relocs are used with non-tls syms. */
9535 if (r_symndx != 0
9536 && r_type != R_PPC64_NONE
9537 && (h == NULL
039b3fef
AM		 9538 || h->elf.root.type == bfd_link_hash_defined
9539 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9540 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9541 {
9542 if (r_type == R_PPC64_TLS && tls_mask != 0)
9543 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9544 ;
9545 else
9546 (*_bfd_error_handler)
9547 (sym_type == STT_TLS
d003868e
AM		 9548 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9549 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9550 input_bfd,
9551 input_section,
0d4792f7
AM		 9552 (long) rel->r_offset,
9553 ppc64_elf_howto_table[r_type]->name,
9554 sym_name);
411e1bfb
AM		 9555 }
9556
9557 /* Ensure reloc mapping code below stays sane. */
9558 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9559 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9560 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9561 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9562 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9563 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9564 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9565 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9566 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9567 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9568 abort ();
0d4792f7 9569
411e1bfb
AM		 9570 switch (r_type)
9571 {
9572 default:
411e1bfb
AM		 9573 break;
9574
9575 case R_PPC64_TOC16:
9576 case R_PPC64_TOC16_LO:
9577 case R_PPC64_TOC16_DS:
9578 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9579 {
9580 /* Check for toc tls entries. */
9581 char *toc_tls;
951fd09b 9582 int retval;
411e1bfb 9583
0d4792f7
AM		 9584 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9585 rel, input_bfd);
951fd09b 9586 if (retval == 0)
411e1bfb
AM		 9587 return FALSE;
9588
9589 if (toc_tls)
9590 {
951fd09b 9591 tls_mask = *toc_tls;
411e1bfb
AM		 9592 if (r_type == R_PPC64_TOC16_DS
9593 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9594 {
9595 if (tls_mask != 0
9596 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9597 goto toctprel;
9598 }
411e1bfb 9599 else
951fd09b
AM		 9600 {
9601 /* If we found a GD reloc pair, then we might be
9602 doing a GD->IE transition. */
9603 if (retval == 2)
9604 {
9605 tls_gd = TLS_TPRELGD;
9606 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9607 goto tls_get_addr_check;
9608 }
9609 else if (retval == 3)
9610 {
9611 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9612 goto tls_get_addr_check;
9613 }
9614 }
411e1bfb
AM		 9615 }
9616 }
9617 break;
9618
9619 case R_PPC64_GOT_TPREL16_DS:
9620 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9621 if (tls_mask != 0
9622 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9623 {
81407a69 9624 toctprel:
411e1bfb
AM		 9625 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9626 insn &= 31 << 21;
9627 insn |= 0x3c0d0000; /* addis 0,13,0 */
9628 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9629 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9630 if (toc_symndx != 0)
9631 {
9632 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9633 /* We changed the symbol. Start over in order to
9634 get h, sym, sec etc. right. */
9635 rel--;
9636 continue;
9637 }
9638 else
9639 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9640 }
9641 break;
9642
9643 case R_PPC64_TLS:
951fd09b
AM		 9644 if (tls_mask != 0
9645 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9646 {
50bc7936 9647 bfd_vma rtra;
411e1bfb 9648 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9649 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9650 == ((31 << 26) | (13 << 11)))
9651 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9652 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9653 == ((31 << 26) | (13 << 16)))
9654 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9655 else
9656 abort ();
9657 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9658 /* add -> addi. */
9659 insn = 14 << 26;
9660 else if ((insn & (31 << 1)) == 23 << 1
9661 && ((insn & (31 << 6)) < 14 << 6
9662 || ((insn & (31 << 6)) >= 16 << 6
9663 && (insn & (31 << 6)) < 24 << 6)))
9664 /* load and store indexed -> dform. */
9665 insn = (32 | ((insn >> 6) & 31)) << 26;
9666 else if ((insn & (31 << 1)) == 21 << 1
9667 && (insn & (0x1a << 6)) == 0)
9668 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9669 insn = (((58 | ((insn >> 6) & 4)) << 26)
9670 | ((insn >> 6) & 1));
9671 else if ((insn & (31 << 1)) == 21 << 1
9672 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9673 /* lwax -> lwa. */
9674 insn = (58 << 26) | 2;
9675 else
9676 abort ();
9677 insn |= rtra;
9678 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9679 /* Was PPC64_TLS which sits on insn boundary, now
9680 PPC64_TPREL16_LO which is at insn+2. */
9681 rel->r_offset += 2;
0d4792f7
AM		 9682 r_type = R_PPC64_TPREL16_LO;
9683 if (toc_symndx != 0)
9684 {
9685 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9686 /* We changed the symbol. Start over in order to
9687 get h, sym, sec etc. right. */
9688 rel--;
9689 continue;
9690 }
9691 else
9692 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9693 }
9694 break;
9695
411e1bfb
AM		 9696 case R_PPC64_GOT_TLSGD16_HI:
9697 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9698 tls_gd = TLS_TPRELGD;
9699 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9700 goto tls_gdld_hi;
9701 break;
9702
411e1bfb
AM		 9703 case R_PPC64_GOT_TLSLD16_HI:
9704 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9705 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9706 {
951fd09b
AM		 9707 tls_gdld_hi:
9708 if ((tls_mask & tls_gd) != 0)
9709 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9710 + R_PPC64_GOT_TPREL16_DS);
9711 else
411e1bfb 9712 {
951fd09b
AM		 9713 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9714 rel->r_offset -= 2;
9715 r_type = R_PPC64_NONE;
411e1bfb 9716 }
951fd09b 9717 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9718 }
9719 break;
9720
951fd09b
AM		 9721 case R_PPC64_GOT_TLSGD16:
9722 case R_PPC64_GOT_TLSGD16_LO:
9723 tls_gd = TLS_TPRELGD;
9724 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9725 goto tls_get_addr_check;
9726 break;
411e1bfb 9727
951fd09b
AM		 9728 case R_PPC64_GOT_TLSLD16:
9729 case R_PPC64_GOT_TLSLD16_LO:
9730 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9731 {
9732 tls_get_addr_check:
9733 if (rel + 1 < relend)
411e1bfb 9734 {
951fd09b
AM		 9735 enum elf_ppc64_reloc_type r_type2;
9736 unsigned long r_symndx2;
9737 struct elf_link_hash_entry *h2;
9738 bfd_vma insn1, insn2, insn3;
9739 bfd_vma offset;
9740
9741 /* The next instruction should be a call to
9742 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9743 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9744 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9745 if (r_symndx2 < symtab_hdr->sh_info
9746 || (r_type2 != R_PPC64_REL14
9747 && r_type2 != R_PPC64_REL14_BRTAKEN
9748 && r_type2 != R_PPC64_REL14_BRNTAKEN
9749 && r_type2 != R_PPC64_REL24))
9750 break;
9751
9752 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9753 while (h2->root.type == bfd_link_hash_indirect
9754 || h2->root.type == bfd_link_hash_warning)
9755 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9756 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9757 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9758 break;
9759
9760 /* OK, it checks out. Replace the call. */
9761 offset = rel[1].r_offset;
9762 insn1 = bfd_get_32 (output_bfd,
9763 contents + rel->r_offset - 2);
9764 insn3 = bfd_get_32 (output_bfd,
9765 contents + offset + 4);
9766 if ((tls_mask & tls_gd) != 0)
411e1bfb 9767 {
951fd09b
AM		 9768 /* IE */
9769 insn1 &= (1 << 26) - (1 << 2);
9770 insn1 |= 58 << 26; /* ld */
9771 insn2 = 0x7c636a14; /* add 3,3,13 */
9772 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9773 if ((tls_mask & TLS_EXPLICIT) == 0)
9774 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9775 + R_PPC64_GOT_TPREL16_DS);
9776 else
9777 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9778 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9779 }
9780 else
951fd09b
AM		 9781 {
9782 /* LE */
9783 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9784 insn2 = 0x38630000; /* addi 3,3,0 */
9785 if (tls_gd == 0)
9786 {
9787 /* Was an LD reloc. */
9788 r_symndx = 0;
e1918d23
AM		 9789 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9790 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9791 }
0d4792f7
AM		 9792 else if (toc_symndx != 0)
9793 r_symndx = toc_symndx;
951fd09b
AM		 9794 r_type = R_PPC64_TPREL16_HA;
9795 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9796 rel[1].r_info = ELF64_R_INFO (r_symndx,
9797 R_PPC64_TPREL16_LO);
9798 rel[1].r_offset += 2;
9799 }
9800 if (insn3 == NOP
9801 || insn3 == CROR_151515 || insn3 == CROR_313131)
9802 {
9803 insn3 = insn2;
9804 insn2 = NOP;
9805 rel[1].r_offset += 4;
9806 }
9807 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9808 bfd_put_32 (output_bfd, insn2, contents + offset);
9809 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9810 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9811 {
0d4792f7
AM		 9812 /* We changed the symbol. Start over in order
9813 to get h, sym, sec etc. right. */
951fd09b
AM		 9814 rel--;
9815 continue;
9816 }
411e1bfb 9817 }
411e1bfb 9818 }
411e1bfb
AM		 9819 break;
9820
9821 case R_PPC64_DTPMOD64:
951fd09b
AM		 9822 if (rel + 1 < relend
9823 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9824 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9825 {
951fd09b
AM		 9826 if ((tls_mask & TLS_GD) == 0)
9827 {
9828 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9829 if ((tls_mask & TLS_TPRELGD) != 0)
9830 r_type = R_PPC64_TPREL64;
9831 else
9832 {
4ce794b7 9833 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9834 r_type = R_PPC64_NONE;
9835 }
9836 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9837 }
9838 }
9839 else
9840 {
9841 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9842 {
4ce794b7 9843 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9844 r_type = R_PPC64_NONE;
951fd09b 9845 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9846 }
411e1bfb
AM		 9847 }
9848 break;
9849
9850 case R_PPC64_TPREL64:
951fd09b 9851 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9852 {
9853 r_type = R_PPC64_NONE;
9854 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9855 }
9856 break;
9857 }
9858
9859 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9860 insn = 0;
b25116a9
AM		 9861 max_br_offset = 1 << 25;
9862 addend = rel->r_addend;
65f38f15 9863 switch (r_type)
5bd4f169
AM		 9864 {
9865 default:
65f38f15 9866 break;
5bd4f169 9867
65f38f15
AM		 9868 /* Branch taken prediction relocations. */
9869 case R_PPC64_ADDR14_BRTAKEN:
9870 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9871 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9872 /* Fall thru. */
65f38f15 9873
86c76c7b 9874 /* Branch not taken prediction relocations. */
65f38f15
AM		 9875 case R_PPC64_ADDR14_BRNTAKEN:
9876 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9877 insn |= bfd_get_32 (output_bfd,
9878 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9879 /* Fall thru. */
86c76c7b 9880
b25116a9
AM		 9881 case R_PPC64_REL14:
9882 max_br_offset = 1 << 15;
9883 /* Fall thru. */
5bd4f169 9884
65f38f15 9885 case R_PPC64_REL24:
ad8e1ba5
AM		 9886 /* Calls to functions with a different TOC, such as calls to
9887 shared objects, need to alter the TOC pointer. This is
9888 done using a linkage stub. A REL24 branching to these
9889 linkage stubs needs to be followed by a nop, as the nop
9890 will be replaced with an instruction to restore the TOC
9891 base pointer. */
b25116a9 9892 stub_entry = NULL;
8387904d 9893 fdh = h;
ad8e1ba5 9894 if (((h != NULL
039b3fef
AM		 9895 && (((fdh = h->oh) != NULL
9896 && fdh->elf.plt.plist != NULL)
9897 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9898 || (sec != NULL
ad8e1ba5 9899 && sec->output_section != NULL
b25116a9 9900 && sec->id <= htab->top_id
ad8e1ba5
AM		 9901 && (htab->stub_group[sec->id].toc_off
9902 != htab->stub_group[input_section->id].toc_off)))
721956f4 9903 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9904 rel, htab)) != NULL
9905 && (stub_entry->stub_type == ppc_stub_plt_call
9906 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9907 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9908 {
b25116a9 9909 bfd_boolean can_plt_call = FALSE;
721956f4 9910
eea6121a 9911 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9912 {
b25116a9
AM		 9913 unsigned long nop;
9914 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9915 if (nop == NOP
9916 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9917 {
4ce794b7 9918 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9919 contents + rel->r_offset + 4);
b25116a9 9920 can_plt_call = TRUE;
41bd81ab 9921 }
5bd4f169 9922 }
721956f4
AM		 9923
9924 if (!can_plt_call)
9925 {
ad8e1ba5
AM		 9926 if (stub_entry->stub_type == ppc_stub_plt_call)
9927 {
9928 /* If this is a plain branch rather than a branch
9929 and link, don't require a nop. */
b25116a9
AM		 9930 unsigned long br;
9931 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9932 if ((br & 1) == 0)
9933 can_plt_call = TRUE;
ad8e1ba5 9934 }
6ab189d5 9935 else if (h != NULL
039b3fef 9936 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 9937 ".__libc_start_main") == 0)
9938 {
9939 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 9940 can_plt_call = TRUE;
6ab189d5 9941 }
ad8e1ba5
AM		 9942 else
9943 {
9944 if (strcmp (input_section->output_section->name,
9945 ".init") == 0
9946 || strcmp (input_section->output_section->name,
9947 ".fini") == 0)
9948 (*_bfd_error_handler)
d003868e 9949 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 9950 "not supported using your crt files; "
9951 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 9952 input_bfd,
9953 input_section,
ad8e1ba5
AM		 9954 (long) rel->r_offset);
9955 else
9956 (*_bfd_error_handler)
d003868e 9957 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 9958 "does not allow automatic multiple TOCs; "
9959 "recompile with -mminimal-toc or "
9960 "-fno-optimize-sibling-calls, "
9961 "or make `%s' extern"),
d003868e
AM		 9962 input_bfd,
9963 input_section,
ad8e1ba5
AM		 9964 (long) rel->r_offset,
9965 sym_name,
9966 sym_name);
9967 bfd_set_error (bfd_error_bad_value);
9968 ret = FALSE;
9969 }
721956f4
AM		 9970 }
9971
b25116a9
AM		 9972 if (can_plt_call
9973 && stub_entry->stub_type == ppc_stub_plt_call)
9974 unresolved_reloc = FALSE;
9975 }
9976
8387904d
AM		 9977 if (stub_entry == NULL
9978 && get_opd_info (sec) != NULL)
9979 {
9980 /* The branch destination is the value of the opd entry. */
9981 bfd_vma off = (relocation - sec->output_section->vma
9982 - sec->output_offset + rel->r_addend);
9983 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9984 if (dest != (bfd_vma) -1)
9985 {
9986 relocation = dest;
9987 addend = 0;
9988 }
9989 }
9990
b25116a9
AM		 9991 /* If the branch is out of reach we ought to have a long
9992 branch stub. */
9993 from = (rel->r_offset
9994 + input_section->output_offset
9995 + input_section->output_section->vma);
9996
9997 if (stub_entry == NULL
9998 && (relocation + rel->r_addend - from + max_br_offset
9999 >= 2 * max_br_offset)
10000 && r_type != R_PPC64_ADDR14_BRTAKEN
10001 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10002 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10003 htab);
b25116a9
AM		 10004
10005 if (stub_entry != NULL)
10006 {
10007 /* Munge up the value and addend so that we call the stub
10008 rather than the procedure directly. */
10009 relocation = (stub_entry->stub_offset
10010 + stub_entry->stub_sec->output_offset
10011 + stub_entry->stub_sec->output_section->vma);
10012 addend = 0;
10013 }
10014
10015 if (insn != 0)
10016 {
10017 if (is_power4)
721956f4 10018 {
b25116a9
AM		 10019 /* Set 'a' bit. This is 0b00010 in BO field for branch
10020 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10021 for branch on CTR insns (BO == 1a00t or 1a01t). */
10022 if ((insn & (0x14 << 21)) == (0x04 << 21))
10023 insn |= 0x02 << 21;
10024 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10025 insn |= 0x08 << 21;
10026 else
10027 break;
10028 }
10029 else
10030 {
10031 /* Invert 'y' bit if not the default. */
10032 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10033 insn ^= 0x01 << 21;
721956f4 10034 }
b25116a9
AM		 10035
10036 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10037 }
e86ce104 10038
06da1e8e
AM		 10039 /* NOP out calls to undefined weak functions.
10040 We can thus call a weak function without first
10041 checking whether the function is defined. */
b25116a9 10042 else if (h != NULL
039b3fef 10043 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10044 && r_type == R_PPC64_REL24
10045 && relocation == 0
10046 && rel->r_addend == 0)
e86ce104 10047 {
06da1e8e
AM		 10048 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10049 continue;
e86ce104 10050 }
65f38f15
AM		 10051 break;
10052 }
5bd4f169 10053
65f38f15 10054 /* Set `addend'. */
411e1bfb 10055 tls_type = 0;
65f38f15
AM		 10056 switch (r_type)
10057 {
10058 default:
10059 (*_bfd_error_handler)
d003868e
AM		 10060 (_("%B: unknown relocation type %d for symbol %s"),
10061 input_bfd, (int) r_type, sym_name);
5bd4f169 10062
65f38f15 10063 bfd_set_error (bfd_error_bad_value);
b34976b6 10064 ret = FALSE;
65f38f15 10065 continue;
5bd4f169 10066
65f38f15 10067 case R_PPC64_NONE:
411e1bfb 10068 case R_PPC64_TLS:
04c9666a
AM		 10069 case R_PPC64_GNU_VTINHERIT:
10070 case R_PPC64_GNU_VTENTRY:
65f38f15 10071 continue;
5bd4f169
AM		 10072
10073 /* GOT16 relocations. Like an ADDR16 using the symbol's
10074 address in the GOT as relocation value instead of the
411e1bfb 10075 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10076 symbol and put the symbol value there. */
411e1bfb
AM		 10077 case R_PPC64_GOT_TLSGD16:
10078 case R_PPC64_GOT_TLSGD16_LO:
10079 case R_PPC64_GOT_TLSGD16_HI:
10080 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10081 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10082 goto dogot;
10083
10084 case R_PPC64_GOT_TLSLD16:
10085 case R_PPC64_GOT_TLSLD16_LO:
10086 case R_PPC64_GOT_TLSLD16_HI:
10087 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10088 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10089 goto dogot;
10090
10091 case R_PPC64_GOT_TPREL16_DS:
10092 case R_PPC64_GOT_TPREL16_LO_DS:
10093 case R_PPC64_GOT_TPREL16_HI:
10094 case R_PPC64_GOT_TPREL16_HA:
10095 tls_type = TLS_TLS | TLS_TPREL;
10096 goto dogot;
10097
10098 case R_PPC64_GOT_DTPREL16_DS:
10099 case R_PPC64_GOT_DTPREL16_LO_DS:
10100 case R_PPC64_GOT_DTPREL16_HI:
10101 case R_PPC64_GOT_DTPREL16_HA:
10102 tls_type = TLS_TLS | TLS_DTPREL;
10103 goto dogot;
10104
65f38f15
AM		 10105 case R_PPC64_GOT16:
10106 case R_PPC64_GOT16_LO:
10107 case R_PPC64_GOT16_HI:
10108 case R_PPC64_GOT16_HA:
10109 case R_PPC64_GOT16_DS:
10110 case R_PPC64_GOT16_LO_DS:
411e1bfb 10111 dogot:
5bd4f169
AM		 10112 {
10113 /* Relocation is to the entry for this symbol in the global
10114 offset table. */
e717da7e 10115 asection *got;
d881513a 10116 bfd_vma *offp;
5bd4f169 10117 bfd_vma off;
d881513a 10118 unsigned long indx = 0;
65f38f15 10119
d881513a
AM		 10120 if (tls_type == (TLS_TLS | TLS_LD)
10121 && (h == NULL
f5385ebf 10122 || !h->elf.def_dynamic))
e717da7e 10123 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10124 else
5bd4f169 10125 {
d881513a 10126 struct got_entry *ent;
5bd4f169 10127
d881513a
AM		 10128 if (h != NULL)
10129 {
10130 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10131 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10132 &h->elf)
d881513a 10133 || (info->shared
039b3fef 10134 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10135 /* This is actually a static link, or it is a
10136 -Bsymbolic link and the symbol is defined
10137 locally, or the symbol was forced to be local
10138 because of a version file. */
10139 ;
10140 else
10141 {
039b3fef 10142 indx = h->elf.dynindx;
d881513a
AM		 10143 unresolved_reloc = FALSE;
10144 }
039b3fef 10145 ent = h->elf.got.glist;
d881513a 10146 }
411e1bfb 10147 else
5bd4f169 10148 {
d881513a
AM		 10149 if (local_got_ents == NULL)
10150 abort ();
10151 ent = local_got_ents[r_symndx];
5bd4f169 10152 }
d881513a
AM		 10153
10154 for (; ent != NULL; ent = ent->next)
10155 if (ent->addend == rel->r_addend
e717da7e 10156 && ent->owner == input_bfd
d881513a
AM		 10157 && ent->tls_type == tls_type)
10158 break;
10159 if (ent == NULL)
10160 abort ();
10161 offp = &ent->got.offset;
5bd4f169 10162 }
411e1bfb 10163
e717da7e
AM		 10164 got = ppc64_elf_tdata (input_bfd)->got;
10165 if (got == NULL)
10166 abort ();
10167
411e1bfb
AM		 10168 /* The offset must always be a multiple of 8. We use the
10169 least significant bit to record whether we have already
10170 processed this entry. */
d881513a 10171 off = *offp;
411e1bfb
AM		 10172 if ((off & 1) != 0)
10173 off &= ~1;
5bd4f169
AM		 10174 else
10175 {
411e1bfb
AM		 10176 /* Generate relocs for the dynamic linker, except in
10177 the case of TLSLD where we'll use one entry per
10178 module. */
e717da7e
AM		 10179 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10180
d881513a 10181 *offp = off | 1;
4e795f50
AM		 10182 if ((info->shared || indx != 0)
10183 && (h == NULL
039b3fef
AM		 10184 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10185 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10186 {
e717da7e
AM		 10187 outrel.r_offset = (got->output_section->vma
10188 + got->output_offset
411e1bfb 10189 + off);
81407a69 10190 outrel.r_addend = rel->r_addend;
d881513a 10191 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10192 {
411e1bfb 10193 outrel.r_addend = 0;
e515b051 10194 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10195 if (tls_type == (TLS_TLS | TLS_GD))
10196 {
e717da7e
AM		 10197 loc = relgot->contents;
10198 loc += (relgot->reloc_count++
d881513a
AM		 10199 * sizeof (Elf64_External_Rela));
10200 bfd_elf64_swap_reloca_out (output_bfd,
10201 &outrel, loc);
e515b051 10202 outrel.r_offset += 8;
81407a69 10203 outrel.r_addend = rel->r_addend;
d881513a
AM		 10204 outrel.r_info
10205 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10206 }
411e1bfb 10207 }
951fd09b 10208 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10209 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10210 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10211 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10212 else if (indx == 0)
81407a69
AM		 10213 {
10214 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10215
10216 /* Write the .got section contents for the sake
10217 of prelink. */
e717da7e 10218 loc = got->contents + off;
23fbd6fa
JJ		 10219 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10220 loc);
81407a69 10221 }
411e1bfb
AM		 10222 else
10223 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10224
10225 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10226 {
10227 outrel.r_addend += relocation;
10228 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10229 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10230 }
e717da7e
AM		 10231 loc = relgot->contents;
10232 loc += (relgot->reloc_count++
411e1bfb
AM		 10233 * sizeof (Elf64_External_Rela));
10234 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10235 }
10236
ad8e1ba5 10237 /* Init the .got section contents here if we're not
81407a69 10238 emitting a reloc. */
d881513a 10239 else
411e1bfb 10240 {
d881513a 10241 relocation += rel->r_addend;
7b609f53
AM		 10242 if (tls_type == (TLS_TLS | TLS_LD))
10243 relocation = 1;
10244 else if (tls_type != 0)
411e1bfb 10245 {
e1918d23 10246 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10247 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10248 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10249
7b609f53
AM		 10250 if (tls_type == (TLS_TLS | TLS_GD))
10251 {
10252 bfd_put_64 (output_bfd, relocation,
e717da7e 10253 got->contents + off + 8);
7b609f53
AM		 10254 relocation = 1;
10255 }
411e1bfb 10256 }
7b609f53 10257
411e1bfb 10258 bfd_put_64 (output_bfd, relocation,
e717da7e 10259 got->contents + off);
5bd4f169
AM		 10260 }
10261 }
10262
65f38f15
AM		 10263 if (off >= (bfd_vma) -2)
10264 abort ();
10265
e717da7e 10266 relocation = got->output_offset + off;
65f38f15 10267
5bd4f169 10268 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10269 addend = -TOC_BASE_OFF;
5bd4f169 10270 }
65f38f15
AM		 10271 break;
10272
10273 case R_PPC64_PLT16_HA:
10274 case R_PPC64_PLT16_HI:
10275 case R_PPC64_PLT16_LO:
10276 case R_PPC64_PLT32:
10277 case R_PPC64_PLT64:
10278 /* Relocation is to the entry for this symbol in the
10279 procedure linkage table. */
10280
10281 /* Resolve a PLT reloc against a local symbol directly,
10282 without using the procedure linkage table. */
10283 if (h == NULL)
10284 break;
10285
411e1bfb
AM		 10286 /* It's possible that we didn't make a PLT entry for this
10287 symbol. This happens when statically linking PIC code,
10288 or when using -Bsymbolic. Go find a match if there is a
10289 PLT entry. */
4ce794b7 10290 if (htab->plt != NULL)
65f38f15 10291 {
411e1bfb 10292 struct plt_entry *ent;
039b3fef 10293 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10294 if (ent->addend == rel->r_addend
10295 && ent->plt.offset != (bfd_vma) -1)
10296 {
4ce794b7
AM		 10297 relocation = (htab->plt->output_section->vma
10298 + htab->plt->output_offset
411e1bfb
AM		 10299 + ent->plt.offset);
10300 unresolved_reloc = FALSE;
10301 }
65f38f15 10302 }
65f38f15 10303 break;
5bd4f169 10304
0b13192e
AM		 10305 case R_PPC64_TOC:
10306 /* Relocation value is TOC base. */
10307 relocation = TOCstart;
10308 if (r_symndx == 0)
10309 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10310 else if (unresolved_reloc)
10311 ;
10312 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10313 relocation += htab->stub_group[sec->id].toc_off;
10314 else
10315 unresolved_reloc = TRUE;
10316 goto dodyn2;
10317
5bd4f169
AM		 10318 /* TOC16 relocs. We want the offset relative to the TOC base,
10319 which is the address of the start of the TOC plus 0x8000.
10320 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10321 in this order. */
65f38f15
AM		 10322 case R_PPC64_TOC16:
10323 case R_PPC64_TOC16_LO:
10324 case R_PPC64_TOC16_HI:
10325 case R_PPC64_TOC16_DS:
10326 case R_PPC64_TOC16_LO_DS:
10327 case R_PPC64_TOC16_HA:
ad8e1ba5 10328 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10329 break;
10330
10331 /* Relocate against the beginning of the section. */
65f38f15
AM		 10332 case R_PPC64_SECTOFF:
10333 case R_PPC64_SECTOFF_LO:
10334 case R_PPC64_SECTOFF_HI:
10335 case R_PPC64_SECTOFF_DS:
10336 case R_PPC64_SECTOFF_LO_DS:
10337 case R_PPC64_SECTOFF_HA:
4ce794b7 10338 if (sec != NULL)
65f38f15 10339 addend -= sec->output_section->vma;
5bd4f169
AM		 10340 break;
10341
721956f4
AM		 10342 case R_PPC64_REL14:
10343 case R_PPC64_REL14_BRNTAKEN:
10344 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10345 case R_PPC64_REL24:
10346 break;
10347
411e1bfb
AM		 10348 case R_PPC64_TPREL16:
10349 case R_PPC64_TPREL16_LO:
10350 case R_PPC64_TPREL16_HI:
10351 case R_PPC64_TPREL16_HA:
10352 case R_PPC64_TPREL16_DS:
10353 case R_PPC64_TPREL16_LO_DS:
10354 case R_PPC64_TPREL16_HIGHER:
10355 case R_PPC64_TPREL16_HIGHERA:
10356 case R_PPC64_TPREL16_HIGHEST:
10357 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10358 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10359 if (info->shared)
10360 /* The TPREL16 relocs shouldn't really be used in shared
10361 libs as they will result in DT_TEXTREL being set, but
10362 support them anyway. */
10363 goto dodyn;
10364 break;
10365
10366 case R_PPC64_DTPREL16:
10367 case R_PPC64_DTPREL16_LO:
10368 case R_PPC64_DTPREL16_HI:
10369 case R_PPC64_DTPREL16_HA:
10370 case R_PPC64_DTPREL16_DS:
10371 case R_PPC64_DTPREL16_LO_DS:
10372 case R_PPC64_DTPREL16_HIGHER:
10373 case R_PPC64_DTPREL16_HIGHERA:
10374 case R_PPC64_DTPREL16_HIGHEST:
10375 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10376 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10377 break;
10378
e515b051
AM		 10379 case R_PPC64_DTPMOD64:
10380 relocation = 1;
10381 addend = 0;
10382 goto dodyn;
10383
411e1bfb 10384 case R_PPC64_TPREL64:
e1918d23 10385 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10386 goto dodyn;
10387
10388 case R_PPC64_DTPREL64:
e1918d23 10389 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10390 /* Fall thru */
10391
65f38f15
AM		 10392 /* Relocations that may need to be propagated if this is a
10393 dynamic object. */
04c9666a 10394 case R_PPC64_REL30:
65f38f15
AM		 10395 case R_PPC64_REL32:
10396 case R_PPC64_REL64:
10397 case R_PPC64_ADDR14:
10398 case R_PPC64_ADDR14_BRNTAKEN:
10399 case R_PPC64_ADDR14_BRTAKEN:
10400 case R_PPC64_ADDR16:
10401 case R_PPC64_ADDR16_DS:
10402 case R_PPC64_ADDR16_HA:
10403 case R_PPC64_ADDR16_HI:
10404 case R_PPC64_ADDR16_HIGHER:
10405 case R_PPC64_ADDR16_HIGHERA:
10406 case R_PPC64_ADDR16_HIGHEST:
10407 case R_PPC64_ADDR16_HIGHESTA:
10408 case R_PPC64_ADDR16_LO:
10409 case R_PPC64_ADDR16_LO_DS:
10410 case R_PPC64_ADDR24:
65f38f15
AM		 10411 case R_PPC64_ADDR32:
10412 case R_PPC64_ADDR64:
10413 case R_PPC64_UADDR16:
10414 case R_PPC64_UADDR32:
10415 case R_PPC64_UADDR64:
ec338859
AM		 10416 /* r_symndx will be zero only for relocs against symbols
10417 from removed linkonce sections, or sections discarded by
10418 a linker script. */
411e1bfb 10419 dodyn:
5d1634d7
AM		 10420 if (r_symndx == 0)
10421 break;
10422 /* Fall thru. */
10423
0b13192e 10424 dodyn2:
5d1634d7 10425 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10426 break;
10427
41bd81ab
AM		 10428 if (NO_OPD_RELOCS && is_opd)
10429 break;
10430
65f38f15 10431 if ((info->shared
4e795f50 10432 && (h == NULL
039b3fef
AM		 10433 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10434 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10435 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10436 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10437 || (ELIMINATE_COPY_RELOCS
10438 && !info->shared
65f38f15 10439 && h != NULL
039b3fef 10440 && h->elf.dynindx != -1
f5385ebf
AM		 10441 && !h->elf.non_got_ref
10442 && h->elf.def_dynamic
10443 && !h->elf.def_regular))
65f38f15
AM		 10444 {
10445 Elf_Internal_Rela outrel;
b34976b6 10446 bfd_boolean skip, relocate;
65f38f15 10447 asection *sreloc;
947216bf 10448 bfd_byte *loc;
1cf1f670 10449 bfd_vma out_off;
65f38f15
AM		 10450
10451 /* When generating a dynamic object, these relocations
10452 are copied into the output file to be resolved at run
10453 time. */
10454
b34976b6
AM		 10455 skip = FALSE;
10456 relocate = FALSE;
65f38f15 10457
1cf1f670
AM		 10458 out_off = _bfd_elf_section_offset (output_bfd, info,
10459 input_section, rel->r_offset);
10460 if (out_off == (bfd_vma) -1)
b34976b6 10461 skip = TRUE;
1cf1f670 10462 else if (out_off == (bfd_vma) -2)
b34976b6 10463 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10464 out_off += (input_section->output_section->vma
10465 + input_section->output_offset);
10466 outrel.r_offset = out_off;
411e1bfb 10467 outrel.r_addend = rel->r_addend;
65f38f15 10468
1cf1f670
AM		 10469 /* Optimize unaligned reloc use. */
10470 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10471 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10472 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10473 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10474 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10475 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10476 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10477 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10478 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10479
65f38f15 10480 if (skip)
0bb2d96a 10481 memset (&outrel, 0, sizeof outrel);
039b3fef 10482 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10483 && !is_opd
10484 && r_type != R_PPC64_TOC)
039b3fef 10485 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10486 else
10487 {
41bd81ab
AM		 10488 /* This symbol is local, or marked to become local,
10489 or this is an opd section reloc which must point
10490 at a local function. */
65f38f15 10491 outrel.r_addend += relocation;
e86ce104 10492 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10493 {
3fad3c7c 10494 if (is_opd && h != NULL)
afbe61cf
AM		 10495 {
10496 /* Lie about opd entries. This case occurs
10497 when building shared libraries and we
10498 reference a function in another shared
3fad3c7c
AM		 10499 lib. The same thing happens for a weak
10500 definition in an application that's
10501 overridden by a strong definition in a
10502 shared lib. (I believe this is a generic
10503 bug in binutils handling of weak syms.)
10504 In these cases we won't use the opd
1e2f5b6e 10505 entry in this lib. */
b34976b6 10506 unresolved_reloc = FALSE;
afbe61cf 10507 }
65f38f15 10508 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10509
10510 /* We need to relocate .opd contents for ld.so.
10511 Prelink also wants simple and consistent rules
10512 for relocs. This make all RELATIVE relocs have
10513 *r_offset equal to r_addend. */
10514 relocate = TRUE;
65f38f15
AM		 10515 }
10516 else
10517 {
10518 long indx = 0;
10519
41bd81ab 10520 if (bfd_is_abs_section (sec))
65f38f15
AM		 10521 ;
10522 else if (sec == NULL || sec->owner == NULL)
10523 {
10524 bfd_set_error (bfd_error_bad_value);
b34976b6 10525 return FALSE;
65f38f15
AM		 10526 }
10527 else
10528 {
10529 asection *osec;
10530
10531 osec = sec->output_section;
10532 indx = elf_section_data (osec)->dynindx;
10533
10534 /* We are turning this relocation into one
10535 against a section symbol, so subtract out
10536 the output section's address but not the
10537 offset of the input section in the output
10538 section. */
10539 outrel.r_addend -= osec->vma;
10540 }
10541
10542 outrel.r_info = ELF64_R_INFO (indx, r_type);
10543 }
10544 }
10545
10546 sreloc = elf_section_data (input_section)->sreloc;
10547 if (sreloc == NULL)
10548 abort ();
10549
947216bf
AM		 10550 loc = sreloc->contents;
10551 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10552 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10553
10554 /* If this reloc is against an external symbol, it will
10555 be computed at runtime, so there's no need to do
81407a69
AM		 10556 anything now. However, for the sake of prelink ensure
10557 that the section contents are a known value. */
65f38f15 10558 if (! relocate)
81407a69
AM		 10559 {
10560 unresolved_reloc = FALSE;
10561 /* The value chosen here is quite arbitrary as ld.so
10562 ignores section contents except for the special
10563 case of .opd where the contents might be accessed
10564 before relocation. Choose zero, as that won't
10565 cause reloc overflow. */
10566 relocation = 0;
10567 addend = 0;
10568 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10569 to improve backward compatibility with older
10570 versions of ld. */
10571 if (r_type == R_PPC64_ADDR64)
10572 addend = outrel.r_addend;
10573 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10574 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10575 addend = (input_section->output_section->vma
10576 + input_section->output_offset
10577 + rel->r_offset);
81407a69 10578 }
65f38f15 10579 }
5bd4f169
AM		 10580 break;
10581
65f38f15
AM		 10582 case R_PPC64_COPY:
10583 case R_PPC64_GLOB_DAT:
10584 case R_PPC64_JMP_SLOT:
10585 case R_PPC64_RELATIVE:
10586 /* We shouldn't ever see these dynamic relocs in relocatable
10587 files. */
ae9a127f 10588 /* Fall through. */
65f38f15
AM		 10589
10590 case R_PPC64_PLTGOT16:
10591 case R_PPC64_PLTGOT16_DS:
10592 case R_PPC64_PLTGOT16_HA:
10593 case R_PPC64_PLTGOT16_HI:
10594 case R_PPC64_PLTGOT16_LO:
10595 case R_PPC64_PLTGOT16_LO_DS:
10596 case R_PPC64_PLTREL32:
10597 case R_PPC64_PLTREL64:
10598 /* These ones haven't been implemented yet. */
10599
10600 (*_bfd_error_handler)
d003868e
AM		 10601 (_("%B: relocation %s is not supported for symbol %s."),
10602 input_bfd,
4ce794b7 10603 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10604
10605 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10606 ret = FALSE;
5bd4f169 10607 continue;
65f38f15 10608 }
5bd4f169 10609
65f38f15
AM		 10610 /* Do any further special processing. */
10611 switch (r_type)
10612 {
10613 default:
10614 break;
10615
10616 case R_PPC64_ADDR16_HA:
10617 case R_PPC64_ADDR16_HIGHERA:
10618 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10619 case R_PPC64_GOT16_HA:
10620 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10621 case R_PPC64_PLT16_HA:
10622 case R_PPC64_TOC16_HA:
10623 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10624 case R_PPC64_TPREL16_HA:
10625 case R_PPC64_DTPREL16_HA:
10626 case R_PPC64_GOT_TLSGD16_HA:
10627 case R_PPC64_GOT_TLSLD16_HA:
10628 case R_PPC64_GOT_TPREL16_HA:
10629 case R_PPC64_GOT_DTPREL16_HA:
10630 case R_PPC64_TPREL16_HIGHER:
10631 case R_PPC64_TPREL16_HIGHERA:
10632 case R_PPC64_TPREL16_HIGHEST:
10633 case R_PPC64_TPREL16_HIGHESTA:
10634 case R_PPC64_DTPREL16_HIGHER:
10635 case R_PPC64_DTPREL16_HIGHERA:
10636 case R_PPC64_DTPREL16_HIGHEST:
10637 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10638 /* It's just possible that this symbol is a weak symbol
10639 that's not actually defined anywhere. In that case,
10640 'sec' would be NULL, and we should leave the symbol
10641 alone (it will be set to zero elsewhere in the link). */
10642 if (sec != NULL)
e515b051
AM		 10643 /* Add 0x10000 if sign bit in 0:15 is set.
10644 Bits 0:15 are not used. */
10645 addend += 0x8000;
65f38f15
AM		 10646 break;
10647
10648 case R_PPC64_ADDR16_DS:
10649 case R_PPC64_ADDR16_LO_DS:
10650 case R_PPC64_GOT16_DS:
10651 case R_PPC64_GOT16_LO_DS:
10652 case R_PPC64_PLT16_LO_DS:
10653 case R_PPC64_SECTOFF_DS:
10654 case R_PPC64_SECTOFF_LO_DS:
10655 case R_PPC64_TOC16_DS:
10656 case R_PPC64_TOC16_LO_DS:
10657 case R_PPC64_PLTGOT16_DS:
10658 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10659 case R_PPC64_GOT_TPREL16_DS:
10660 case R_PPC64_GOT_TPREL16_LO_DS:
10661 case R_PPC64_GOT_DTPREL16_DS:
10662 case R_PPC64_GOT_DTPREL16_LO_DS:
10663 case R_PPC64_TPREL16_DS:
10664 case R_PPC64_TPREL16_LO_DS:
10665 case R_PPC64_DTPREL16_DS:
10666 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10667 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10668 mask = 3;
10669 /* If this reloc is against an lq insn, then the value must be
10670 a multiple of 16. This is somewhat of a hack, but the
10671 "correct" way to do this by defining _DQ forms of all the
10672 _DS relocs bloats all reloc switches in this file. It
10673 doesn't seem to make much sense to use any of these relocs
10674 in data, so testing the insn should be safe. */
494dac0c 10675 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10676 mask = 15;
10677 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10678 {
10679 (*_bfd_error_handler)
d003868e
AM		 10680 (_("%B: error: relocation %s not a multiple of %d"),
10681 input_bfd,
4ce794b7 10682 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10683 mask + 1);
65f38f15 10684 bfd_set_error (bfd_error_bad_value);
b34976b6 10685 ret = FALSE;
65f38f15
AM		 10686 continue;
10687 }
10688 break;
5bd4f169
AM		 10689 }
10690
239e1f3a
AM		 10691 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10692 because such sections are not SEC_ALLOC and thus ld.so will
10693 not process them. */
65f38f15 10694 if (unresolved_reloc
239e1f3a 10695 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10696 && h->elf.def_dynamic))
9c07fe7c
AM		 10697 {
10698 (*_bfd_error_handler)
d003868e
AM		 10699 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10700 input_bfd,
10701 input_section,
9c07fe7c 10702 (long) rel->r_offset,
7b609f53 10703 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10704 h->elf.root.root.string);
b34976b6 10705 ret = FALSE;
9c07fe7c 10706 }
5bd4f169 10707
65f38f15 10708 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10709 input_bfd,
10710 input_section,
10711 contents,
411e1bfb 10712 rel->r_offset,
5bd4f169
AM		 10713 relocation,
10714 addend);
10715
ef60b7ff 10716 if (r != bfd_reloc_ok)
5bd4f169 10717 {
cd27b276
AM		 10718 if (sym_name == NULL)
10719 sym_name = "(null)";
10720 if (r == bfd_reloc_overflow)
5bd4f169 10721 {
cd27b276
AM		 10722 if (warned)
10723 continue;
10724 if (h != NULL
039b3fef 10725 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10726 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10727 {
10728 /* Assume this is a call protected by other code that
10729 detects the symbol is undefined. If this is the case,
10730 we can safely ignore the overflow. If not, the
10731 program is hosed anyway, and a little warning isn't
10732 going to help. */
10733
10734 continue;
10735 }
10736
ef60b7ff 10737 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10738 (info, (h ? &h->elf.root : NULL), sym_name,
10739 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10740 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10741 return FALSE;
ef60b7ff
AM		 10742 }
10743 else
10744 {
10745 (*_bfd_error_handler)
d003868e
AM		 10746 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10747 input_bfd,
10748 input_section,
7b609f53 10749 (long) rel->r_offset,
4ce794b7 10750 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10751 sym_name,
10752 (int) r);
b34976b6 10753 ret = FALSE;
ef60b7ff 10754 }
5bd4f169 10755 }
5bd4f169
AM		 10756 }
10757
645ea6a9
AM		 10758 /* If we're emitting relocations, then shortly after this function
10759 returns, reloc offsets and addends for this section will be
10760 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10761 file rather than the input. Save a copy of the relocs for
10762 opd_entry_value. */
10763 if (is_opd && info->emitrelocations)
10764 {
10765 bfd_size_type amt;
10766 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10767 rel = bfd_alloc (input_bfd, amt);
10768 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10769 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10770 if (rel == NULL)
10771 return FALSE;
10772 memcpy (rel, relocs, amt);
10773 }
5bd4f169
AM		 10774 return ret;
10775}
10776
754021d0
AM		 10777/* Adjust the value of any local symbols in opd sections. */
10778
10779static bfd_boolean
10780ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10781 const char *name ATTRIBUTE_UNUSED,
10782 Elf_Internal_Sym *elfsym,
10783 asection *input_sec,
10784 struct elf_link_hash_entry *h)
10785{
4025353c 10786 long *opd_adjust, adjust;
754021d0
AM		 10787 bfd_vma value;
10788
4025353c
AM		 10789 if (h != NULL)
10790 return TRUE;
10791
10792 opd_adjust = get_opd_info (input_sec);
10793 if (opd_adjust == NULL)
754021d0
AM		 10794 return TRUE;
10795
10796 value = elfsym->st_value - input_sec->output_offset;
10797 if (!info->relocatable)
10798 value -= input_sec->output_section->vma;
10799
3f764659 10800 adjust = opd_adjust[value / 8];
4025353c
AM		 10801 if (adjust == -1)
10802 elfsym->st_value = 0;
10803 else
10804 elfsym->st_value += adjust;
754021d0
AM		 10805 return TRUE;
10806}
10807
5bd4f169
AM		 10808/* Finish up dynamic symbol handling. We set the contents of various
10809 dynamic sections here. */
10810
b34976b6 10811static bfd_boolean
4ce794b7
AM		 10812ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10813 struct bfd_link_info *info,
10814 struct elf_link_hash_entry *h,
10815 Elf_Internal_Sym *sym)
5bd4f169 10816{
65f38f15 10817 struct ppc_link_hash_table *htab;
5bd4f169 10818 bfd *dynobj;
8387904d
AM		 10819 struct plt_entry *ent;
10820 Elf_Internal_Rela rela;
10821 bfd_byte *loc;
5bd4f169 10822
65f38f15
AM		 10823 htab = ppc_hash_table (info);
10824 dynobj = htab->elf.dynobj;
5bd4f169 10825
8387904d
AM		 10826 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10827 if (ent->plt.offset != (bfd_vma) -1)
10828 {
10829 /* This symbol has an entry in the procedure linkage
10830 table. Set it up. */
10831
10832 if (htab->plt == NULL
10833 || htab->relplt == NULL
10834 || htab->glink == NULL)
10835 abort ();
10836
10837 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10838 fill in the PLT entry. */
10839 rela.r_offset = (htab->plt->output_section->vma
10840 + htab->plt->output_offset
10841 + ent->plt.offset);
10842 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10843 rela.r_addend = ent->addend;
10844
10845 loc = htab->relplt->contents;
10846 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10847 * sizeof (Elf64_External_Rela));
10848 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10849 }
5bd4f169 10850
f5385ebf 10851 if (h->needs_copy)
5bd4f169 10852 {
5bd4f169 10853 Elf_Internal_Rela rela;
947216bf 10854 bfd_byte *loc;
5bd4f169 10855
65f38f15 10856 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10857
65f38f15
AM		 10858 if (h->dynindx == -1
10859 || (h->root.type != bfd_link_hash_defined
10860 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10861 || htab->relbss == NULL)
65f38f15 10862 abort ();
5bd4f169
AM		 10863
10864 rela.r_offset = (h->root.u.def.value
10865 + h->root.u.def.section->output_section->vma
10866 + h->root.u.def.section->output_offset);
10867 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10868 rela.r_addend = 0;
4ce794b7
AM		 10869 loc = htab->relbss->contents;
10870 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10871 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10872 }
10873
5bd4f169
AM		 10874 /* Mark some specially defined symbols as absolute. */
10875 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10876 sym->st_shndx = SHN_ABS;
10877
b34976b6 10878 return TRUE;
5bd4f169
AM		 10879}
10880
65f38f15
AM		 10881/* Used to decide how to sort relocs in an optimal manner for the
10882 dynamic linker, before writing them out. */
10883
10884static enum elf_reloc_type_class
4ce794b7 10885ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10886{
04c9666a 10887 enum elf_ppc64_reloc_type r_type;
a33d1f77 10888
4ce794b7 10889 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10890 switch (r_type)
65f38f15
AM		 10891 {
10892 case R_PPC64_RELATIVE:
10893 return reloc_class_relative;
10894 case R_PPC64_JMP_SLOT:
10895 return reloc_class_plt;
10896 case R_PPC64_COPY:
10897 return reloc_class_copy;
10898 default:
10899 return reloc_class_normal;
10900 }
10901}
10902
5bd4f169
AM		 10903/* Finish up the dynamic sections. */
10904
b34976b6 10905static bfd_boolean
4ce794b7
AM		 10906ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10907 struct bfd_link_info *info)
5bd4f169 10908{
65f38f15
AM		 10909 struct ppc_link_hash_table *htab;
10910 bfd *dynobj;
5bd4f169 10911 asection *sdyn;
5bd4f169 10912
65f38f15
AM		 10913 htab = ppc_hash_table (info);
10914 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10915 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10916
65f38f15 10917 if (htab->elf.dynamic_sections_created)
5bd4f169 10918 {
5bd4f169
AM		 10919 Elf64_External_Dyn *dyncon, *dynconend;
10920
4ce794b7 10921 if (sdyn == NULL || htab->got == NULL)
65f38f15 10922 abort ();
5bd4f169
AM		 10923
10924 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 10925 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 10926 for (; dyncon < dynconend; dyncon++)
10927 {
10928 Elf_Internal_Dyn dyn;
19397422 10929 asection *s;
5bd4f169
AM		 10930
10931 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10932
10933 switch (dyn.d_tag)
10934 {
65f38f15
AM		 10935 default:
10936 continue;
5bd4f169 10937
5d1634d7 10938 case DT_PPC64_GLINK:
4ce794b7 10939 s = htab->glink;
6348e046 10940 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 10941 /* We stupidly defined DT_PPC64_GLINK to be the start
10942 of glink rather than the first entry point, which is
10943 what ld.so needs, and now have a bigger stub to
10944 support automatic multiple TOCs. */
10945 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 10946 break;
10947
19397422
AM		 10948 case DT_PPC64_OPD:
10949 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10950 if (s == NULL)
10951 continue;
10952 dyn.d_un.d_ptr = s->vma;
19397422
AM		 10953 break;
10954
10955 case DT_PPC64_OPDSZ:
10956 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10957 if (s == NULL)
10958 continue;
eea6121a 10959 dyn.d_un.d_val = s->size;
19397422
AM		 10960 break;
10961
65f38f15 10962 case DT_PLTGOT:
4ce794b7 10963 s = htab->plt;
6348e046 10964 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 10965 break;
10966
10967 case DT_JMPREL:
4ce794b7 10968 s = htab->relplt;
6348e046 10969 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 10970 break;
5bd4f169 10971
65f38f15 10972 case DT_PLTRELSZ:
eea6121a 10973 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 10974 break;
10975
10976 case DT_RELASZ:
10977 /* Don't count procedure linkage table relocs in the
10978 overall reloc count. */
4ce794b7 10979 s = htab->relplt;
6348e046
AM		 10980 if (s == NULL)
10981 continue;
eea6121a 10982 dyn.d_un.d_val -= s->size;
6348e046
AM		 10983 break;
10984
10985 case DT_RELA:
10986 /* We may not be using the standard ELF linker script.
10987 If .rela.plt is the first .rela section, we adjust
10988 DT_RELA to not include it. */
4ce794b7 10989 s = htab->relplt;
6348e046
AM		 10990 if (s == NULL)
10991 continue;
10992 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10993 continue;
eea6121a 10994 dyn.d_un.d_ptr += s->size;
65f38f15 10995 break;
5bd4f169 10996 }
5bd4f169 10997
65f38f15 10998 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 10999 }
5bd4f169
AM		 11000 }
11001
eea6121a 11002 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11003 {
11004 /* Fill in the first entry in the global offset table.
11005 We use it to hold the link-time TOCbase. */
11006 bfd_put_64 (output_bfd,
60ee0d4a 11007 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11008 htab->got->contents);
5d1634d7
AM		 11009
11010 /* Set .got entry size. */
4ce794b7 11011 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11012 }
11013
eea6121a 11014 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11015 {
11016 /* Set .plt entry size. */
4ce794b7 11017 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11018 = PLT_ENTRY_SIZE;
11019 }
11020
e717da7e 11021 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11022 since we didn't add them to DYNOBJ. We know dynobj is the first
11023 bfd. */
e717da7e
AM		 11024 while ((dynobj = dynobj->link_next) != NULL)
11025 {
11026 asection *s;
7b53ace3 11027
ee75fd95 11028 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11029 continue;
11030
e717da7e
AM		 11031 s = ppc64_elf_tdata (dynobj)->got;
11032 if (s != NULL
eea6121a 11033 && s->size != 0
e717da7e
AM		 11034 && s->output_section != bfd_abs_section_ptr
11035 && !bfd_set_section_contents (output_bfd, s->output_section,
11036 s->contents, s->output_offset,
eea6121a 11037 s->size))
e717da7e
AM		 11038 return FALSE;
11039 s = ppc64_elf_tdata (dynobj)->relgot;
11040 if (s != NULL
eea6121a 11041 && s->size != 0
e717da7e
AM		 11042 && s->output_section != bfd_abs_section_ptr
11043 && !bfd_set_section_contents (output_bfd, s->output_section,
11044 s->contents, s->output_offset,
eea6121a 11045 s->size))
e717da7e
AM		 11046 return FALSE;
11047 }
f6c52c13 11048
b34976b6 11049 return TRUE;
5bd4f169
AM		 11050}
11051
5bd4f169 11052#include "elf64-target.h"
GDB Binutils - Deliverables
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