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2005-06-20 H.J. Lu <hongjiu.lu@intel.com>
[thirdparty/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3eb128b2 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169
AM		 27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
04c9666a 33#include "elf/ppc64.h"
5d1634d7 34#include "elf64-ppc.h"
5bd4f169 35
805fc799 36static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 38static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 54static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 56
ad8e1ba5
AM		 57#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58#define TARGET_LITTLE_NAME "elf64-powerpcle"
59#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60#define TARGET_BIG_NAME "elf64-powerpc"
61#define ELF_ARCH bfd_arch_powerpc
62#define ELF_MACHINE_CODE EM_PPC64
63#define ELF_MAXPAGESIZE 0x10000
64#define elf_info_to_howto ppc64_elf_info_to_howto
65
66#define elf_backend_want_got_sym 0
67#define elf_backend_want_plt_sym 0
68#define elf_backend_plt_alignment 3
69#define elf_backend_plt_not_loaded 1
ad8e1ba5 70#define elf_backend_got_header_size 8
ad8e1ba5
AM		 71#define elf_backend_can_gc_sections 1
72#define elf_backend_can_refcount 1
73#define elf_backend_rela_normal 1
74
e717da7e 75#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 76#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 81#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 82
83#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 84#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 86#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 88#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d
AM		 89#define elf_backend_check_directives ppc64_elf_check_directives
90#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5
AM		 91#define elf_backend_check_relocs ppc64_elf_check_relocs
92#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95#define elf_backend_hide_symbol ppc64_elf_hide_symbol
96#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98#define elf_backend_relocate_section ppc64_elf_relocate_section
99#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 102#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
2f89ff8d 103#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 104
5bd4f169
AM		 105/* The name of the dynamic interpreter. This is put in the .interp
106 section. */
107#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
108
109/* The size in bytes of an entry in the procedure linkage table. */
110#define PLT_ENTRY_SIZE 24
111
112/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 113#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 114
115/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 116#define TOC_BASE_OFF 0x8000
117
118/* Offset of tp and dtp pointers from start of TLS block. */
119#define TP_OFFSET 0x7000
120#define DTP_OFFSET 0x8000
5bd4f169 121
ad8e1ba5
AM		 122/* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 126#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132#define BCTR 0x4e800420 /* bctr */
133
5d1634d7 134
ad8e1ba5
AM		 135#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
137
138#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
139
140/* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142#define GLINK_CALL_STUB_SIZE (16*4)
143#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
155 /* ld %r2,8(%r12) */
156 /* mtctr %r11 */
157 /* ld %r11,16(%r12) */
158 /* bctr */
5d1634d7
AM		 159
160/* Pad with this. */
161#define NOP 0x60000000
162
721956f4
AM		 163/* Some other nops. */
164#define CROR_151515 0x4def7b82
165#define CROR_313131 0x4ffffb82
166
cedb70c5 167/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 168#define LI_R0_0 0x38000000 /* li %r0,0 */
169#define B_DOT 0x48000000 /* b . */
170
171/* After that, we need two instructions to load the index, followed by
172 a branch. */
173#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 174#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 175
deb0e272
AM		 176/* Instructions used by the save and restore reg functions. */
177#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 181#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 183#define LI_R12_0 0x39800000 /* li %r12,0 */
184#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 187#define BLR 0x4e800020 /* blr */
188
41bd81ab
AM		 189/* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 192 relocate .opd without reloc entries. */
41bd81ab
AM		 193#ifndef NO_OPD_RELOCS
194#define NO_OPD_RELOCS 0
195#endif
5bd4f169 196\f
f5e87a1d 197#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 198
5bd4f169 199/* Relocation HOWTO's. */
04c9666a 200static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 201
202static reloc_howto_type ppc64_elf_howto_raw[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE, /* type */
205 0, /* rightshift */
411e1bfb
AM		 206 2, /* size (0 = byte, 1 = short, 2 = long) */
207 32, /* bitsize */
b34976b6 208 FALSE, /* pc_relative */
5bd4f169 209 0, /* bitpos */
f5e87a1d 210 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_NONE", /* name */
b34976b6 213 FALSE, /* partial_inplace */
d006db6c 214 0, /* src_mask */
5bd4f169 215 0, /* dst_mask */
b34976b6 216 FALSE), /* pcrel_offset */
5bd4f169
AM		 217
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 32, /* bitsize */
b34976b6 223 FALSE, /* pc_relative */
5bd4f169
AM		 224 0, /* bitpos */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR32", /* name */
b34976b6 228 FALSE, /* partial_inplace */
5bd4f169
AM		 229 0, /* src_mask */
230 0xffffffff, /* dst_mask */
b34976b6 231 FALSE), /* pcrel_offset */
5bd4f169
AM		 232
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24, /* type */
236 0, /* rightshift */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
238 26, /* bitsize */
b34976b6 239 FALSE, /* pc_relative */
5bd4f169
AM		 240 0, /* bitpos */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC64_ADDR24", /* name */
b34976b6 244 FALSE, /* partial_inplace */
d006db6c 245 0, /* src_mask */
f5e87a1d 246 0x03fffffc, /* dst_mask */
b34976b6 247 FALSE), /* pcrel_offset */
5bd4f169
AM		 248
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16, /* type */
251 0, /* rightshift */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
b34976b6 254 FALSE, /* pc_relative */
5bd4f169
AM		 255 0, /* bitpos */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16", /* name */
b34976b6 259 FALSE, /* partial_inplace */
5bd4f169
AM		 260 0, /* src_mask */
261 0xffff, /* dst_mask */
b34976b6 262 FALSE), /* pcrel_offset */
5bd4f169
AM		 263
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO, /* type */
266 0, /* rightshift */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
b34976b6 269 FALSE, /* pc_relative */
5bd4f169
AM		 270 0, /* bitpos */
271 complain_overflow_dont,/* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16_LO", /* name */
b34976b6 274 FALSE, /* partial_inplace */
5bd4f169
AM		 275 0, /* src_mask */
276 0xffff, /* dst_mask */
b34976b6 277 FALSE), /* pcrel_offset */
5bd4f169
AM		 278
279 /* Bits 16-31 of an address. */
280 HOWTO (R_PPC64_ADDR16_HI, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
b34976b6 284 FALSE, /* pc_relative */
5bd4f169
AM		 285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_HI", /* name */
b34976b6 289 FALSE, /* partial_inplace */
5bd4f169
AM		 290 0, /* src_mask */
291 0xffff, /* dst_mask */
b34976b6 292 FALSE), /* pcrel_offset */
5bd4f169
AM		 293
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA, /* type */
297 16, /* rightshift */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
5bd4f169
AM		 301 0, /* bitpos */
302 complain_overflow_dont, /* complain_on_overflow */
805fc799 303 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 304 "R_PPC64_ADDR16_HA", /* name */
b34976b6 305 FALSE, /* partial_inplace */
5bd4f169
AM		 306 0, /* src_mask */
307 0xffff, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
5bd4f169
AM		 309
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
b34976b6 316 FALSE, /* pc_relative */
5bd4f169
AM		 317 0, /* bitpos */
318 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 319 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 320 "R_PPC64_ADDR14", /* name */
b34976b6 321 FALSE, /* partial_inplace */
d006db6c 322 0, /* src_mask */
f5e87a1d 323 0x0000fffc, /* dst_mask */
b34976b6 324 FALSE), /* pcrel_offset */
5bd4f169
AM		 325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
b34976b6 333 FALSE, /* pc_relative */
5bd4f169
AM		 334 0, /* bitpos */
335 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 336 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 337 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 338 FALSE, /* partial_inplace */
d006db6c 339 0, /* src_mask */
f5e87a1d 340 0x0000fffc, /* dst_mask */
b34976b6 341 FALSE), /* pcrel_offset */
5bd4f169
AM		 342
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 16, /* bitsize */
b34976b6 350 FALSE, /* pc_relative */
5bd4f169
AM		 351 0, /* bitpos */
352 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 353 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 355 FALSE, /* partial_inplace */
d006db6c 356 0, /* src_mask */
f5e87a1d 357 0x0000fffc, /* dst_mask */
b34976b6 358 FALSE), /* pcrel_offset */
5bd4f169
AM		 359
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 26, /* bitsize */
b34976b6 365 TRUE, /* pc_relative */
5bd4f169
AM		 366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
2441e016 368 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 369 "R_PPC64_REL24", /* name */
b34976b6 370 FALSE, /* partial_inplace */
d006db6c 371 0, /* src_mask */
f5e87a1d 372 0x03fffffc, /* dst_mask */
b34976b6 373 TRUE), /* pcrel_offset */
5bd4f169
AM		 374
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
b34976b6 380 TRUE, /* pc_relative */
5bd4f169
AM		 381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
2441e016 383 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 384 "R_PPC64_REL14", /* name */
b34976b6 385 FALSE, /* partial_inplace */
d006db6c 386 0, /* src_mask */
f5e87a1d 387 0x0000fffc, /* dst_mask */
b34976b6 388 TRUE), /* pcrel_offset */
5bd4f169
AM		 389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
392 zero. */
393 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 TRUE, /* pc_relative */
5bd4f169
AM		 398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
805fc799 400 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 401 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 402 FALSE, /* partial_inplace */
d006db6c 403 0, /* src_mask */
f5e87a1d 404 0x0000fffc, /* dst_mask */
b34976b6 405 TRUE), /* pcrel_offset */
5bd4f169
AM		 406
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
409 be zero. */
410 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
b34976b6 414 TRUE, /* pc_relative */
5bd4f169
AM		 415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
805fc799 417 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 418 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 419 FALSE, /* partial_inplace */
d006db6c 420 0, /* src_mask */
f5e87a1d 421 0x0000fffc, /* dst_mask */
b34976b6 422 TRUE), /* pcrel_offset */
5bd4f169
AM		 423
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
425 symbol. */
426 HOWTO (R_PPC64_GOT16, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
b34976b6 430 FALSE, /* pc_relative */
5bd4f169
AM		 431 0, /* bitpos */
432 complain_overflow_signed, /* complain_on_overflow */
805fc799 433 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 434 "R_PPC64_GOT16", /* name */
b34976b6 435 FALSE, /* partial_inplace */
5bd4f169
AM		 436 0, /* src_mask */
437 0xffff, /* dst_mask */
b34976b6 438 FALSE), /* pcrel_offset */
5bd4f169
AM		 439
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC64_GOT16_LO, /* type */
443 0, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
b34976b6 446 FALSE, /* pc_relative */
5bd4f169
AM		 447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
805fc799 449 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 450 "R_PPC64_GOT16_LO", /* name */
b34976b6 451 FALSE, /* partial_inplace */
5bd4f169
AM		 452 0, /* src_mask */
453 0xffff, /* dst_mask */
b34976b6 454 FALSE), /* pcrel_offset */
5bd4f169
AM		 455
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC64_GOT16_HI, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
b34976b6 462 FALSE, /* pc_relative */
5bd4f169
AM		 463 0, /* bitpos */
464 complain_overflow_dont,/* complain_on_overflow */
805fc799 465 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 466 "R_PPC64_GOT16_HI", /* name */
b34976b6 467 FALSE, /* partial_inplace */
5bd4f169
AM		 468 0, /* src_mask */
469 0xffff, /* dst_mask */
b34976b6 470 FALSE), /* pcrel_offset */
5bd4f169
AM		 471
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
473 the symbol. */
474 HOWTO (R_PPC64_GOT16_HA, /* type */
475 16, /* rightshift */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
477 16, /* bitsize */
b34976b6 478 FALSE, /* pc_relative */
5bd4f169
AM		 479 0, /* bitpos */
480 complain_overflow_dont,/* complain_on_overflow */
805fc799 481 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 482 "R_PPC64_GOT16_HA", /* name */
b34976b6 483 FALSE, /* partial_inplace */
5bd4f169
AM		 484 0, /* src_mask */
485 0xffff, /* dst_mask */
b34976b6 486 FALSE), /* pcrel_offset */
5bd4f169
AM		 487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY, /* type */
494 0, /* rightshift */
f5e87a1d
AM		 495 0, /* this one is variable size */
496 0, /* bitsize */
b34976b6 497 FALSE, /* pc_relative */
5bd4f169 498 0, /* bitpos */
f5e87a1d
AM		 499 complain_overflow_dont, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 501 "R_PPC64_COPY", /* name */
b34976b6 502 FALSE, /* partial_inplace */
5bd4f169
AM		 503 0, /* src_mask */
504 0, /* dst_mask */
b34976b6 505 FALSE), /* pcrel_offset */
5bd4f169
AM		 506
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC64_GLOB_DAT, /* type */
510 0, /* rightshift */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
512 64, /* bitsize */
b34976b6 513 FALSE, /* pc_relative */
5bd4f169
AM		 514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
805fc799 516 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 517 "R_PPC64_GLOB_DAT", /* name */
b34976b6 518 FALSE, /* partial_inplace */
5bd4f169 519 0, /* src_mask */
f5e87a1d 520 ONES (64), /* dst_mask */
b34976b6 521 FALSE), /* pcrel_offset */
5bd4f169
AM		 522
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT, /* type */
526 0, /* rightshift */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
528 0, /* bitsize */
b34976b6 529 FALSE, /* pc_relative */
5bd4f169
AM		 530 0, /* bitpos */
531 complain_overflow_dont, /* complain_on_overflow */
805fc799 532 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 533 "R_PPC64_JMP_SLOT", /* name */
b34976b6 534 FALSE, /* partial_inplace */
5bd4f169
AM		 535 0, /* src_mask */
536 0, /* dst_mask */
b34976b6 537 FALSE), /* pcrel_offset */
5bd4f169
AM		 538
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
541 addend. */
542 HOWTO (R_PPC64_RELATIVE, /* type */
543 0, /* rightshift */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
545 64, /* bitsize */
b34976b6 546 FALSE, /* pc_relative */
5bd4f169
AM		 547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
b34976b6 551 FALSE, /* partial_inplace */
5bd4f169 552 0, /* src_mask */
f5e87a1d 553 ONES (64), /* dst_mask */
b34976b6 554 FALSE), /* pcrel_offset */
5bd4f169
AM		 555
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 32, /* bitsize */
b34976b6 561 FALSE, /* pc_relative */
5bd4f169
AM		 562 0, /* bitpos */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_UADDR32", /* name */
b34976b6 566 FALSE, /* partial_inplace */
5bd4f169
AM		 567 0, /* src_mask */
568 0xffffffff, /* dst_mask */
b34976b6 569 FALSE), /* pcrel_offset */
5bd4f169
AM		 570
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16, /* type */
573 0, /* rightshift */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
575 16, /* bitsize */
b34976b6 576 FALSE, /* pc_relative */
5bd4f169
AM		 577 0, /* bitpos */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR16", /* name */
b34976b6 581 FALSE, /* partial_inplace */
5bd4f169
AM		 582 0, /* src_mask */
583 0xffff, /* dst_mask */
b34976b6 584 FALSE), /* pcrel_offset */
5bd4f169
AM		 585
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 32, /* bitsize */
b34976b6 591 TRUE, /* pc_relative */
5bd4f169 592 0, /* bitpos */
cedb70c5 593 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 594 complain_overflow_signed, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC64_REL32", /* name */
b34976b6 597 FALSE, /* partial_inplace */
5bd4f169
AM		 598 0, /* src_mask */
599 0xffffffff, /* dst_mask */
b34976b6 600 TRUE), /* pcrel_offset */
5bd4f169 601
10ed1bba 602 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 603 HOWTO (R_PPC64_PLT32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
b34976b6 607 FALSE, /* pc_relative */
5bd4f169
AM		 608 0, /* bitpos */
609 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 610 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 611 "R_PPC64_PLT32", /* name */
b34976b6 612 FALSE, /* partial_inplace */
5bd4f169 613 0, /* src_mask */
f5e87a1d 614 0xffffffff, /* dst_mask */
b34976b6 615 FALSE), /* pcrel_offset */
5bd4f169
AM		 616
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
b34976b6 623 TRUE, /* pc_relative */
5bd4f169
AM		 624 0, /* bitpos */
625 complain_overflow_signed, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
b34976b6 628 FALSE, /* partial_inplace */
5bd4f169 629 0, /* src_mask */
f5e87a1d 630 0xffffffff, /* dst_mask */
b34976b6 631 TRUE), /* pcrel_offset */
5bd4f169
AM		 632
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
634 the symbol. */
635 HOWTO (R_PPC64_PLT16_LO, /* type */
636 0, /* rightshift */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
638 16, /* bitsize */
b34976b6 639 FALSE, /* pc_relative */
5bd4f169
AM		 640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
805fc799 642 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 643 "R_PPC64_PLT16_LO", /* name */
b34976b6 644 FALSE, /* partial_inplace */
5bd4f169
AM		 645 0, /* src_mask */
646 0xffff, /* dst_mask */
b34976b6 647 FALSE), /* pcrel_offset */
5bd4f169
AM		 648
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC64_PLT16_HI, /* type */
652 16, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
b34976b6 655 FALSE, /* pc_relative */
5bd4f169
AM		 656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
805fc799 658 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 659 "R_PPC64_PLT16_HI", /* name */
b34976b6 660 FALSE, /* partial_inplace */
5bd4f169
AM		 661 0, /* src_mask */
662 0xffff, /* dst_mask */
b34976b6 663 FALSE), /* pcrel_offset */
5bd4f169
AM		 664
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC64_PLT16_HA, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
b34976b6 671 FALSE, /* pc_relative */
5bd4f169
AM		 672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
805fc799 674 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 675 "R_PPC64_PLT16_HA", /* name */
b34976b6 676 FALSE, /* partial_inplace */
5bd4f169
AM		 677 0, /* src_mask */
678 0xffff, /* dst_mask */
b34976b6 679 FALSE), /* pcrel_offset */
5bd4f169 680
c061c2d8 681 /* 16-bit section relative relocation. */
5bd4f169
AM		 682 HOWTO (R_PPC64_SECTOFF, /* type */
683 0, /* rightshift */
c061c2d8
AM		 684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
5bd4f169
AM		 687 0, /* bitpos */
688 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 689 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 690 "R_PPC64_SECTOFF", /* name */
b34976b6 691 FALSE, /* partial_inplace */
5bd4f169 692 0, /* src_mask */
c061c2d8 693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
5bd4f169 695
c061c2d8 696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 697 HOWTO (R_PPC64_SECTOFF_LO, /* type */
698 0, /* rightshift */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
5bd4f169
AM		 702 0, /* bitpos */
703 complain_overflow_dont, /* complain_on_overflow */
805fc799 704 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 705 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 706 FALSE, /* partial_inplace */
5bd4f169
AM		 707 0, /* src_mask */
708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
5bd4f169
AM		 710
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI, /* type */
713 16, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
5bd4f169
AM		 717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
805fc799 719 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 720 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 721 FALSE, /* partial_inplace */
5bd4f169
AM		 722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
5bd4f169
AM		 725
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
5bd4f169
AM		 732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
805fc799 734 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 735 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 736 FALSE, /* partial_inplace */
5bd4f169
AM		 737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
5bd4f169 740
04c9666a
AM		 741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 743 2, /* rightshift */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
745 30, /* bitsize */
b34976b6 746 TRUE, /* pc_relative */
5bd4f169
AM		 747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
04c9666a 750 "R_PPC64_REL30", /* name */
b34976b6 751 FALSE, /* partial_inplace */
d006db6c 752 0, /* src_mask */
5bd4f169 753 0xfffffffc, /* dst_mask */
b34976b6 754 TRUE), /* pcrel_offset */
5bd4f169
AM		 755
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
757
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64, /* type */
760 0, /* rightshift */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
762 64, /* bitsize */
b34976b6 763 FALSE, /* pc_relative */
5bd4f169
AM		 764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR64", /* name */
b34976b6 768 FALSE, /* partial_inplace */
5bd4f169 769 0, /* src_mask */
f5e87a1d 770 ONES (64), /* dst_mask */
b34976b6 771 FALSE), /* pcrel_offset */
5bd4f169
AM		 772
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
775 32, /* rightshift */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
777 16, /* bitsize */
b34976b6 778 FALSE, /* pc_relative */
5bd4f169
AM		 779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 783 FALSE, /* partial_inplace */
5bd4f169
AM		 784 0, /* src_mask */
785 0xffff, /* dst_mask */
b34976b6 786 FALSE), /* pcrel_offset */
5bd4f169
AM		 787
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
791 32, /* rightshift */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
b34976b6 794 FALSE, /* pc_relative */
5bd4f169
AM		 795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
805fc799 797 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 798 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 799 FALSE, /* partial_inplace */
5bd4f169
AM		 800 0, /* src_mask */
801 0xffff, /* dst_mask */
b34976b6 802 FALSE), /* pcrel_offset */
5bd4f169
AM		 803
804 /* The bits 48-63 of an address. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
806 48, /* rightshift */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
b34976b6 809 FALSE, /* pc_relative */
5bd4f169
AM		 810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 814 FALSE, /* partial_inplace */
5bd4f169
AM		 815 0, /* src_mask */
816 0xffff, /* dst_mask */
b34976b6 817 FALSE), /* pcrel_offset */
5bd4f169
AM		 818
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
822 48, /* rightshift */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
b34976b6 825 FALSE, /* pc_relative */
5bd4f169
AM		 826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
805fc799 828 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 829 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 830 FALSE, /* partial_inplace */
5bd4f169
AM		 831 0, /* src_mask */
832 0xffff, /* dst_mask */
b34976b6 833 FALSE), /* pcrel_offset */
5bd4f169
AM		 834
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64, /* type */
837 0, /* rightshift */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
839 64, /* bitsize */
b34976b6 840 FALSE, /* pc_relative */
5bd4f169
AM		 841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_UADDR64", /* name */
b34976b6 845 FALSE, /* partial_inplace */
5bd4f169 846 0, /* src_mask */
f5e87a1d 847 ONES (64), /* dst_mask */
b34976b6 848 FALSE), /* pcrel_offset */
5bd4f169
AM		 849
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64, /* type */
852 0, /* rightshift */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 64, /* bitsize */
b34976b6 855 TRUE, /* pc_relative */
5bd4f169
AM		 856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_REL64", /* name */
b34976b6 860 FALSE, /* partial_inplace */
5bd4f169 861 0, /* src_mask */
f5e87a1d 862 ONES (64), /* dst_mask */
b34976b6 863 TRUE), /* pcrel_offset */
5bd4f169 864
cedb70c5 865 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 866 HOWTO (R_PPC64_PLT64, /* type */
867 0, /* rightshift */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
869 64, /* bitsize */
b34976b6 870 FALSE, /* pc_relative */
5bd4f169
AM		 871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
805fc799 873 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 874 "R_PPC64_PLT64", /* name */
b34976b6 875 FALSE, /* partial_inplace */
5bd4f169 876 0, /* src_mask */
f5e87a1d 877 ONES (64), /* dst_mask */
b34976b6 878 FALSE), /* pcrel_offset */
5bd4f169
AM		 879
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
881 table. */
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64, /* type */
884 0, /* rightshift */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
886 64, /* bitsize */
b34976b6 887 TRUE, /* pc_relative */
5bd4f169
AM		 888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
805fc799 890 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 891 "R_PPC64_PLTREL64", /* name */
b34976b6 892 FALSE, /* partial_inplace */
5bd4f169 893 0, /* src_mask */
f5e87a1d 894 ONES (64), /* dst_mask */
b34976b6 895 TRUE), /* pcrel_offset */
5bd4f169
AM		 896
897 /* 16 bit TOC-relative relocation. */
898
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16, /* type */
901 0, /* rightshift */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
903 16, /* bitsize */
b34976b6 904 FALSE, /* pc_relative */
5bd4f169
AM		 905 0, /* bitpos */
906 complain_overflow_signed, /* complain_on_overflow */
805fc799 907 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 908 "R_PPC64_TOC16", /* name */
b34976b6 909 FALSE, /* partial_inplace */
5bd4f169
AM		 910 0, /* src_mask */
911 0xffff, /* dst_mask */
b34976b6 912 FALSE), /* pcrel_offset */
5bd4f169
AM		 913
914 /* 16 bit TOC-relative relocation without overflow. */
915
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO, /* type */
918 0, /* rightshift */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
b34976b6 921 FALSE, /* pc_relative */
5bd4f169
AM		 922 0, /* bitpos */
923 complain_overflow_dont, /* complain_on_overflow */
805fc799 924 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 925 "R_PPC64_TOC16_LO", /* name */
b34976b6 926 FALSE, /* partial_inplace */
5bd4f169
AM		 927 0, /* src_mask */
928 0xffff, /* dst_mask */
b34976b6 929 FALSE), /* pcrel_offset */
5bd4f169
AM		 930
931 /* 16 bit TOC-relative relocation, high 16 bits. */
932
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI, /* type */
935 16, /* rightshift */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
b34976b6 938 FALSE, /* pc_relative */
5bd4f169
AM		 939 0, /* bitpos */
940 complain_overflow_dont, /* complain_on_overflow */
805fc799 941 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 942 "R_PPC64_TOC16_HI", /* name */
b34976b6 943 FALSE, /* partial_inplace */
5bd4f169
AM		 944 0, /* src_mask */
945 0xffff, /* dst_mask */
b34976b6 946 FALSE), /* pcrel_offset */
5bd4f169
AM		 947
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
950 negative. */
951
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA, /* type */
954 16, /* rightshift */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
956 16, /* bitsize */
b34976b6 957 FALSE, /* pc_relative */
5bd4f169
AM		 958 0, /* bitpos */
959 complain_overflow_dont, /* complain_on_overflow */
805fc799 960 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 961 "R_PPC64_TOC16_HA", /* name */
b34976b6 962 FALSE, /* partial_inplace */
5bd4f169
AM		 963 0, /* src_mask */
964 0xffff, /* dst_mask */
b34976b6 965 FALSE), /* pcrel_offset */
5bd4f169
AM		 966
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
968
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC, /* type */
971 0, /* rightshift */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
973 64, /* bitsize */
b34976b6 974 FALSE, /* pc_relative */
5bd4f169
AM		 975 0, /* bitpos */
976 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 977 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 978 "R_PPC64_TOC", /* name */
b34976b6 979 FALSE, /* partial_inplace */
5bd4f169 980 0, /* src_mask */
f5e87a1d 981 ONES (64), /* dst_mask */
b34976b6 982 FALSE), /* pcrel_offset */
5bd4f169
AM		 983
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16, /* type */
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
b34976b6 997 FALSE, /* pc_relative */
5bd4f169
AM		 998 0, /* bitpos */
999 complain_overflow_signed, /* complain_on_overflow */
805fc799 1000 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1010 0, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 16, /* bitsize */
1013 FALSE, /* pc_relative */
1014 0, /* bitpos */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE, /* partial_inplace */
1019 0, /* src_mask */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1022
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 16, /* bitsize */
1029 FALSE, /* pc_relative */
1030 0, /* bitpos */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE, /* partial_inplace */
1035 0, /* src_mask */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1038
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1041 is negative. */
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_DS, /* type */
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_bitfield, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_signed, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_PLT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_bitfield, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1149 0, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_DS, /* type */
1164 0, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1179 0, /* rightshift */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 16, /* bitsize */
1182 FALSE, /* pc_relative */
1183 0, /* bitpos */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1188 0, /* src_mask */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1191
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1195 0, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 16, /* bitsize */
1198 FALSE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE, /* partial_inplace */
1204 0, /* src_mask */
1205 0xfffc, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1207
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1211 0, /* rightshift */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 16, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0xfffc, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* Marker reloc for TLS. */
1225 HOWTO (R_PPC64_TLS,
1226 0, /* rightshift */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 32, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE, /* partial_inplace */
1235 0, /* src_mask */
1236 0, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64,
1242 0, /* rightshift */
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1244 64, /* bitsize */
1245 FALSE, /* pc_relative */
1246 0, /* bitpos */
1247 complain_overflow_dont, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE, /* partial_inplace */
1251 0, /* src_mask */
1252 ONES (64), /* dst_mask */
1253 FALSE), /* pcrel_offset */
1254
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64,
1259 0, /* rightshift */
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1261 64, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_dont, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 ONES (64), /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16,
1274 0, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 16, /* bitsize */
1277 FALSE, /* pc_relative */
1278 0, /* bitpos */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO,
1289 0, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1291 16, /* bitsize */
1292 FALSE, /* pc_relative */
1293 0, /* bitpos */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc, /* special_function */
1296 "R_PPC64_DTPREL16_LO", /* name */
1297 FALSE, /* partial_inplace */
1298 0, /* src_mask */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1301
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 16, /* bitsize */
1307 FALSE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL16_HI", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA,
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 16, /* bitsize */
1322 FALSE, /* pc_relative */
1323 0, /* bitpos */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16_HA", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1331
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHER", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1349 32, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHERA", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHEST", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE, /* partial_inplace */
1388 0, /* src_mask */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_DS,
1394 0, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS,
1409 0, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 16, /* bitsize */
1412 FALSE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xfffc, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1421
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64,
1425 0, /* rightshift */
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1427 64, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
1430 complain_overflow_dont, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE, /* partial_inplace */
1434 0, /* src_mask */
1435 ONES (64), /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16,
1440 0, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 16, /* bitsize */
1443 FALSE, /* pc_relative */
1444 0, /* bitpos */
1445 complain_overflow_signed, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE, /* partial_inplace */
1449 0, /* src_mask */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO,
1455 0, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 16, /* bitsize */
1458 FALSE, /* pc_relative */
1459 0, /* bitpos */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_TPREL16_LO", /* name */
1463 FALSE, /* partial_inplace */
1464 0, /* src_mask */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 16, /* bitsize */
1473 FALSE, /* pc_relative */
1474 0, /* bitpos */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL16_HI", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA,
1485 16, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 16, /* bitsize */
1488 FALSE, /* pc_relative */
1489 0, /* bitpos */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16_HA", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 16, /* bitsize */
1503 FALSE, /* pc_relative */
1504 0, /* bitpos */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_HIGHER", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA,
1515 32, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 16, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HIGHERA", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1532 16, /* bitsize */
1533 FALSE, /* pc_relative */
1534 0, /* bitpos */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HIGHEST", /* name */
1538 FALSE, /* partial_inplace */
1539 0, /* src_mask */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1542
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE, /* partial_inplace */
1554 0, /* src_mask */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_DS,
1560 0, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1562 16, /* bitsize */
1563 FALSE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_signed, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE, /* partial_inplace */
1569 0, /* src_mask */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS,
1575 0, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1577 16, /* bitsize */
1578 FALSE, /* pc_relative */
1579 0, /* bitpos */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE, /* partial_inplace */
1584 0, /* src_mask */
1585 0xfffc, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1587
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16,
1592 0, /* rightshift */
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 16, /* bitsize */
1595 FALSE, /* pc_relative */
1596 0, /* bitpos */
1597 complain_overflow_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1600 FALSE, /* partial_inplace */
5bd4f169
AM		 1601 0, /* src_mask */
1602 0xffff, /* dst_mask */
b34976b6 1603 FALSE), /* pcrel_offset */
5bd4f169 1604
411e1bfb
AM		 1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1607 0, /* rightshift */
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 16, /* bitsize */
b34976b6 1610 FALSE, /* pc_relative */
5bd4f169
AM		 1611 0, /* bitpos */
1612 complain_overflow_dont, /* complain_on_overflow */
805fc799 1613 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1614 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1615 FALSE, /* partial_inplace */
5bd4f169
AM		 1616 0, /* src_mask */
1617 0xffff, /* dst_mask */
b34976b6 1618 FALSE), /* pcrel_offset */
5bd4f169 1619
411e1bfb
AM		 1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 16, /* bitsize */
b34976b6 1625 FALSE, /* pc_relative */
5bd4f169
AM		 1626 0, /* bitpos */
1627 complain_overflow_dont, /* complain_on_overflow */
805fc799 1628 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1629 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1630 FALSE, /* partial_inplace */
5bd4f169
AM		 1631 0, /* src_mask */
1632 0xffff, /* dst_mask */
b34976b6 1633 FALSE), /* pcrel_offset */
5bd4f169 1634
411e1bfb
AM		 1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 16, /* bitsize */
b34976b6 1640 FALSE, /* pc_relative */
5bd4f169 1641 0, /* bitpos */
411e1bfb 1642 complain_overflow_dont, /* complain_on_overflow */
805fc799 1643 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1645 FALSE, /* partial_inplace */
5bd4f169
AM		 1646 0, /* src_mask */
1647 0xffff, /* dst_mask */
b34976b6 1648 FALSE), /* pcrel_offset */
5bd4f169 1649
411e1bfb
AM		 1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1654 0, /* rightshift */
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1656 16, /* bitsize */
b34976b6 1657 FALSE, /* pc_relative */
5bd4f169 1658 0, /* bitpos */
411e1bfb
AM		 1659 complain_overflow_signed, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1662 FALSE, /* partial_inplace */
d006db6c 1663 0, /* src_mask */
411e1bfb 1664 0xffff, /* dst_mask */
b34976b6 1665 FALSE), /* pcrel_offset */
5bd4f169 1666
411e1bfb
AM		 1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1669 0, /* rightshift */
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1671 16, /* bitsize */
b34976b6 1672 FALSE, /* pc_relative */
5bd4f169 1673 0, /* bitpos */
411e1bfb
AM		 1674 complain_overflow_dont, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1677 FALSE, /* partial_inplace */
d006db6c 1678 0, /* src_mask */
411e1bfb 1679 0xffff, /* dst_mask */
b34976b6 1680 FALSE), /* pcrel_offset */
5bd4f169 1681
411e1bfb
AM		 1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1684 16, /* rightshift */
5bd4f169
AM		 1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1686 16, /* bitsize */
b34976b6 1687 FALSE, /* pc_relative */
5bd4f169 1688 0, /* bitpos */
411e1bfb 1689 complain_overflow_dont, /* complain_on_overflow */
805fc799 1690 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1691 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1692 FALSE, /* partial_inplace */
d006db6c 1693 0, /* src_mask */
411e1bfb 1694 0xffff, /* dst_mask */
b34976b6 1695 FALSE), /* pcrel_offset */
5bd4f169 1696
411e1bfb
AM		 1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1699 16, /* rightshift */
5bd4f169
AM		 1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 16, /* bitsize */
b34976b6 1702 FALSE, /* pc_relative */
5bd4f169
AM		 1703 0, /* bitpos */
1704 complain_overflow_dont, /* complain_on_overflow */
805fc799 1705 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1707 FALSE, /* partial_inplace */
d006db6c 1708 0, /* src_mask */
411e1bfb 1709 0xffff, /* dst_mask */
b34976b6 1710 FALSE), /* pcrel_offset */
5bd4f169 1711
411e1bfb
AM		 1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1715 0, /* rightshift */
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 16, /* bitsize */
b34976b6 1718 FALSE, /* pc_relative */
5bd4f169 1719 0, /* bitpos */
411e1bfb 1720 complain_overflow_signed, /* complain_on_overflow */
805fc799 1721 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1723 FALSE, /* partial_inplace */
d006db6c 1724 0, /* src_mask */
5bd4f169 1725 0xfffc, /* dst_mask */
b34976b6 1726 FALSE), /* pcrel_offset */
5bd4f169 1727
411e1bfb
AM		 1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1730 0, /* rightshift */
c061c2d8
AM		 1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 16, /* bitsize */
b34976b6 1733 FALSE, /* pc_relative */
5bd4f169 1734 0, /* bitpos */
411e1bfb
AM		 1735 complain_overflow_dont, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1738 FALSE, /* partial_inplace */
d006db6c 1739 0, /* src_mask */
c061c2d8 1740 0xfffc, /* dst_mask */
b34976b6 1741 FALSE), /* pcrel_offset */
5bd4f169 1742
411e1bfb
AM		 1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1745 16, /* rightshift */
5bd4f169
AM		 1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 16, /* bitsize */
b34976b6 1748 FALSE, /* pc_relative */
5bd4f169
AM		 1749 0, /* bitpos */
1750 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1751 ppc64_elf_unhandled_reloc, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1753 FALSE, /* partial_inplace */
d006db6c 1754 0, /* src_mask */
411e1bfb 1755 0xffff, /* dst_mask */
b34976b6 1756 FALSE), /* pcrel_offset */
5bd4f169 1757
411e1bfb
AM		 1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 16, /* bitsize */
1763 FALSE, /* pc_relative */
1764 0, /* bitpos */
1765 complain_overflow_dont, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE, /* partial_inplace */
1769 0, /* src_mask */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1772
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1776 0, /* rightshift */
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 16, /* bitsize */
b34976b6 1779 FALSE, /* pc_relative */
5bd4f169
AM		 1780 0, /* bitpos */
1781 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1784 FALSE, /* partial_inplace */
d006db6c 1785 0, /* src_mask */
ad8e1ba5 1786 0xfffc, /* dst_mask */
b34976b6 1787 FALSE), /* pcrel_offset */
5bd4f169 1788
411e1bfb
AM		 1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1791 0, /* rightshift */
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 16, /* bitsize */
b34976b6 1794 FALSE, /* pc_relative */
5bd4f169
AM		 1795 0, /* bitpos */
1796 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1799 FALSE, /* partial_inplace */
d006db6c 1800 0, /* src_mask */
ad8e1ba5 1801 0xfffc, /* dst_mask */
b34976b6 1802 FALSE), /* pcrel_offset */
5bd4f169 1803
411e1bfb
AM		 1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI,
1806 16, /* rightshift */
5bd4f169
AM		 1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 16, /* bitsize */
b34976b6 1809 FALSE, /* pc_relative */
5bd4f169 1810 0, /* bitpos */
411e1bfb 1811 complain_overflow_dont, /* complain_on_overflow */
805fc799 1812 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1813 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1814 FALSE, /* partial_inplace */
d006db6c 1815 0, /* src_mask */
411e1bfb 1816 0xffff, /* dst_mask */
b34976b6 1817 FALSE), /* pcrel_offset */
5bd4f169 1818
411e1bfb
AM		 1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA,
1821 16, /* rightshift */
5bd4f169
AM		 1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 16, /* bitsize */
b34976b6 1824 FALSE, /* pc_relative */
5bd4f169
AM		 1825 0, /* bitpos */
1826 complain_overflow_dont, /* complain_on_overflow */
805fc799 1827 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1828 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1829 FALSE, /* partial_inplace */
d006db6c 1830 0, /* src_mask */
411e1bfb 1831 0xffff, /* dst_mask */
b34976b6 1832 FALSE), /* pcrel_offset */
5bd4f169
AM		 1833
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1836 0, /* rightshift */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1838 0, /* bitsize */
b34976b6 1839 FALSE, /* pc_relative */
5bd4f169
AM		 1840 0, /* bitpos */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 NULL, /* special_function */
1843 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1844 FALSE, /* partial_inplace */
5bd4f169
AM		 1845 0, /* src_mask */
1846 0, /* dst_mask */
b34976b6 1847 FALSE), /* pcrel_offset */
5bd4f169
AM		 1848
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1851 0, /* rightshift */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1853 0, /* bitsize */
b34976b6 1854 FALSE, /* pc_relative */
5bd4f169
AM		 1855 0, /* bitpos */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 NULL, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1859 FALSE, /* partial_inplace */
5bd4f169
AM		 1860 0, /* src_mask */
1861 0, /* dst_mask */
b34976b6 1862 FALSE), /* pcrel_offset */
5bd4f169
AM		 1863};
1864
1865\f
1866/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1867 be done. */
1868
1869static void
4ce794b7 1870ppc_howto_init (void)
5bd4f169
AM		 1871{
1872 unsigned int i, type;
1873
1874 for (i = 0;
1875 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1876 i++)
1877 {
1878 type = ppc64_elf_howto_raw[i].type;
1879 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1880 / sizeof (ppc64_elf_howto_table[0])));
1881 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1882 }
1883}
1884
1885static reloc_howto_type *
4ce794b7
AM		 1886ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1887 bfd_reloc_code_real_type code)
5bd4f169 1888{
411e1bfb 1889 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1890
1891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1892 /* Initialize howto table if needed. */
1893 ppc_howto_init ();
1894
4ce794b7 1895 switch (code)
5bd4f169
AM		 1896 {
1897 default:
4ce794b7 1898 return NULL;
5bd4f169 1899
411e1bfb
AM		 1900 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1901 break;
1902 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1903 break;
1904 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1905 break;
1906 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1907 break;
1908 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1909 break;
1910 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1911 break;
1912 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1913 break;
411e1bfb 1914 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1915 break;
411e1bfb 1916 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1917 break;
411e1bfb 1918 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1919 break;
411e1bfb 1920 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1921 break;
411e1bfb 1922 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1923 break;
411e1bfb 1924 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1925 break;
411e1bfb 1926 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2031 break;
411e1bfb
AM		 2032 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2033 break;
2034 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2035 break;
2036 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2037 break;
2038 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2039 break;
2040 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2041 break;
2042 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2043 break;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2045 break;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2047 break;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2049 break;
2050 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2051 break;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2053 break;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2065 break;
2066 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2067 break;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2069 break;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2071 break;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2073 break;
2074 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2075 break;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2077 break;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2079 break;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2081 break;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2083 break;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2085 break;
2086 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2087 break;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2089 break;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2091 break;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2093 break;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2095 break;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2097 break;
2098 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2099 break;
2100 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2101 break;
2102 }
2103
4ce794b7 2104 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2105};
2106
2107/* Set the howto pointer for a PowerPC ELF reloc. */
2108
2109static void
4ce794b7
AM		 2110ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2111 Elf_Internal_Rela *dst)
5bd4f169 2112{
65f38f15
AM		 2113 unsigned int type;
2114
ef60b7ff 2115 /* Initialize howto table if needed. */
5bd4f169 2116 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2117 ppc_howto_init ();
2118
65f38f15
AM		 2119 type = ELF64_R_TYPE (dst->r_info);
2120 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])));
2122 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2123}
2124
04c9666a 2125/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2126
2127static bfd_reloc_status_type
4ce794b7
AM		 2128ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2129 void *data, asection *input_section,
2130 bfd *output_bfd, char **error_message)
5bd4f169 2131{
805fc799
AM		 2132 /* If this is a relocatable link (output_bfd test tells us), just
2133 call the generic function. Any adjustment will be done at final
2134 link time. */
2135 if (output_bfd != NULL)
cedb70c5 2136 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2137 input_section, output_bfd, error_message);
2138
2139 /* Adjust the addend for sign extension of the low 16 bits.
2140 We won't actually be using the low 16 bits, so trashing them
2141 doesn't matter. */
2142 reloc_entry->addend += 0x8000;
2143 return bfd_reloc_continue;
2144}
5bd4f169 2145
2441e016
AM		 2146static bfd_reloc_status_type
2147ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2148 void *data, asection *input_section,
2149 bfd *output_bfd, char **error_message)
2150{
2151 if (output_bfd != NULL)
2152 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2153 input_section, output_bfd, error_message);
2154
699733f6
AM		 2155 if (strcmp (symbol->section->name, ".opd") == 0
2156 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2157 {
2158 bfd_vma dest = opd_entry_value (symbol->section,
2159 symbol->value + reloc_entry->addend,
2160 NULL, NULL);
2161 if (dest != (bfd_vma) -1)
2162 reloc_entry->addend = dest - (symbol->value
2163 + symbol->section->output_section->vma
2164 + symbol->section->output_offset);
2165 }
2166 return bfd_reloc_continue;
2167}
2168
805fc799 2169static bfd_reloc_status_type
4ce794b7
AM		 2170ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2171 void *data, asection *input_section,
2172 bfd *output_bfd, char **error_message)
805fc799
AM		 2173{
2174 long insn;
04c9666a 2175 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2176 bfd_size_type octets;
2177 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2178 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2179
2180 /* If this is a relocatable link (output_bfd test tells us), just
2181 call the generic function. Any adjustment will be done at final
2182 link time. */
5bd4f169 2183 if (output_bfd != NULL)
cedb70c5 2184 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2185 input_section, output_bfd, error_message);
2186
2187 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2188 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2189 insn &= ~(0x01 << 21);
4ce794b7 2190 r_type = reloc_entry->howto->type;
805fc799
AM		 2191 if (r_type == R_PPC64_ADDR14_BRTAKEN
2192 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2193 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2194
2195 if (is_power4)
5bd4f169 2196 {
805fc799
AM		 2197 /* Set 'a' bit. This is 0b00010 in BO field for branch
2198 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2199 for branch on CTR insns (BO == 1a00t or 1a01t). */
2200 if ((insn & (0x14 << 21)) == (0x04 << 21))
2201 insn |= 0x02 << 21;
2202 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2203 insn |= 0x08 << 21;
2204 else
2441e016 2205 goto out;
5bd4f169 2206 }
805fc799
AM		 2207 else
2208 {
2209 bfd_vma target = 0;
2210 bfd_vma from;
5bd4f169 2211
805fc799
AM		 2212 if (!bfd_is_com_section (symbol->section))
2213 target = symbol->value;
2214 target += symbol->section->output_section->vma;
2215 target += symbol->section->output_offset;
2216 target += reloc_entry->addend;
5bd4f169 2217
805fc799
AM		 2218 from = (reloc_entry->address
2219 + input_section->output_offset
2220 + input_section->output_section->vma);
5bd4f169 2221
805fc799
AM		 2222 /* Invert 'y' bit if not the default. */
2223 if ((bfd_signed_vma) (target - from) < 0)
2224 insn ^= 0x01 << 21;
2225 }
4ce794b7 2226 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2227 out:
2228 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2229 input_section, output_bfd, error_message);
805fc799 2230}
5bd4f169 2231
805fc799 2232static bfd_reloc_status_type
4ce794b7
AM		 2233ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2234 void *data, asection *input_section,
2235 bfd *output_bfd, char **error_message)
805fc799
AM		 2236{
2237 /* If this is a relocatable link (output_bfd test tells us), just
2238 call the generic function. Any adjustment will be done at final
2239 link time. */
2240 if (output_bfd != NULL)
cedb70c5 2241 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2242 input_section, output_bfd, error_message);
5bd4f169 2243
805fc799
AM		 2244 /* Subtract the symbol section base address. */
2245 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2246 return bfd_reloc_continue;
2247}
2248
805fc799 2249static bfd_reloc_status_type
4ce794b7
AM		 2250ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2251 void *data, asection *input_section,
2252 bfd *output_bfd, char **error_message)
805fc799
AM		 2253{
2254 /* If this is a relocatable link (output_bfd test tells us), just
2255 call the generic function. Any adjustment will be done at final
2256 link time. */
2257 if (output_bfd != NULL)
cedb70c5 2258 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2259 input_section, output_bfd, error_message);
2260
2261 /* Subtract the symbol section base address. */
2262 reloc_entry->addend -= symbol->section->output_section->vma;
2263
2264 /* Adjust the addend for sign extension of the low 16 bits. */
2265 reloc_entry->addend += 0x8000;
2266 return bfd_reloc_continue;
2267}
2268
2269static bfd_reloc_status_type
4ce794b7
AM		 2270ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2271 void *data, asection *input_section,
2272 bfd *output_bfd, char **error_message)
805fc799
AM		 2273{
2274 bfd_vma TOCstart;
2275
2276 /* If this is a relocatable link (output_bfd test tells us), just
2277 call the generic function. Any adjustment will be done at final
2278 link time. */
2279 if (output_bfd != NULL)
cedb70c5 2280 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2281 input_section, output_bfd, error_message);
2282
2283 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2284 if (TOCstart == 0)
2285 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2286
2287 /* Subtract the TOC base address. */
2288 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2289 return bfd_reloc_continue;
2290}
2291
2292static bfd_reloc_status_type
4ce794b7
AM		 2293ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
805fc799
AM		 2296{
2297 bfd_vma TOCstart;
2298
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2301 link time. */
2302 if (output_bfd != NULL)
cedb70c5 2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2304 input_section, output_bfd, error_message);
2305
2306 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2307 if (TOCstart == 0)
2308 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2309
2310 /* Subtract the TOC base address. */
2311 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2312
2313 /* Adjust the addend for sign extension of the low 16 bits. */
2314 reloc_entry->addend += 0x8000;
2315 return bfd_reloc_continue;
2316}
2317
2318static bfd_reloc_status_type
4ce794b7
AM		 2319ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2320 void *data, asection *input_section,
2321 bfd *output_bfd, char **error_message)
805fc799
AM		 2322{
2323 bfd_vma TOCstart;
2324 bfd_size_type octets;
2325
2326 /* If this is a relocatable link (output_bfd test tells us), just
2327 call the generic function. Any adjustment will be done at final
2328 link time. */
2329 if (output_bfd != NULL)
cedb70c5 2330 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2331 input_section, output_bfd, error_message);
2332
2333 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2334 if (TOCstart == 0)
2335 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2336
2337 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2338 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2339 return bfd_reloc_ok;
2340}
2341
2342static bfd_reloc_status_type
4ce794b7
AM		 2343ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2344 void *data, asection *input_section,
2345 bfd *output_bfd, char **error_message)
805fc799
AM		 2346{
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2349 link time. */
2350 if (output_bfd != NULL)
cedb70c5 2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2352 input_section, output_bfd, error_message);
2353
2354 if (error_message != NULL)
2355 {
2356 static char buf[60];
2357 sprintf (buf, "generic linker can't handle %s",
2358 reloc_entry->howto->name);
2359 *error_message = buf;
2360 }
2361 return bfd_reloc_dangerous;
2362}
2363
e717da7e
AM		 2364struct ppc64_elf_obj_tdata
2365{
2366 struct elf_obj_tdata elf;
2367
2368 /* Shortcuts to dynamic linker sections. */
2369 asection *got;
2370 asection *relgot;
2371
433817dd
AM		 2372 union {
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2376
2377 /* Used when adding symbols. */
2378 bfd_boolean has_dotsym;
2379 } u;
81688140 2380
e717da7e
AM		 2381 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2382 sections means we potentially need one of these for each input bfd. */
2383 union {
2384 bfd_signed_vma refcount;
2385 bfd_vma offset;
2386 } tlsld_got;
8860955f
AM		 2387
2388 /* A copy of relocs before they are modified for --emit-relocs. */
2389 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2390};
2391
2392#define ppc64_elf_tdata(bfd) \
2393 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2394
2395#define ppc64_tlsld_got(bfd) \
2396 (&ppc64_elf_tdata (bfd)->tlsld_got)
2397
2398/* Override the generic function because we store some extras. */
2399
2400static bfd_boolean
2401ppc64_elf_mkobject (bfd *abfd)
2402{
2403 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2404 abfd->tdata.any = bfd_zalloc (abfd, amt);
2405 if (abfd->tdata.any == NULL)
2406 return FALSE;
2407 return TRUE;
2408}
2409
ee75fd95
AM		 2410/* Return 1 if target is one of ours. */
2411
7b53ace3 2412static bfd_boolean
ee75fd95 2413is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2414{
2415 extern const bfd_target bfd_elf64_powerpc_vec;
2416 extern const bfd_target bfd_elf64_powerpcle_vec;
2417
2418 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2419}
2420
feee612b
AM		 2421/* Fix bad default arch selected for a 64 bit input bfd when the
2422 default is 32 bit. */
2423
b34976b6 2424static bfd_boolean
4ce794b7 2425ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2426{
2427 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2428 {
2429 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2430
2431 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2432 {
2433 /* Relies on arch after 32 bit default being 64 bit default. */
2434 abfd->arch_info = abfd->arch_info->next;
2435 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2436 }
2437 }
b34976b6 2438 return TRUE;
feee612b
AM		 2439}
2440
d37c89e5
AM		 2441/* Support for core dump NOTE sections. */
2442
2443static bfd_boolean
2444ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2445{
eea6121a 2446 size_t offset, size;
d37c89e5
AM		 2447
2448 if (note->descsz != 504)
2449 return FALSE;
2450
2451 /* pr_cursig */
2452 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2453
2454 /* pr_pid */
2455 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2456
2457 /* pr_reg */
2458 offset = 112;
eea6121a 2459 size = 384;
d37c89e5
AM		 2460
2461 /* Make a ".reg/999" section. */
2462 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2463 size, note->descpos + offset);
d37c89e5
AM		 2464}
2465
2466static bfd_boolean
2467ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2468{
2469 if (note->descsz != 136)
2470 return FALSE;
2471
2472 elf_tdata (abfd)->core_program
2473 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2474 elf_tdata (abfd)->core_command
2475 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2476
2477 return TRUE;
2478}
2479
5bd4f169
AM		 2480/* Merge backend specific data from an object file to the output
2481 object file when linking. */
2f6d9989 2482
b34976b6 2483static bfd_boolean
4ce794b7 2484ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2485{
5bd4f169
AM		 2486 /* Check if we have the same endianess. */
2487 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2488 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2489 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2490 {
2491 const char *msg;
2492
2493 if (bfd_big_endian (ibfd))
d003868e 2494 msg = _("%B: compiled for a big endian system "
4ce794b7 2495 "and target is little endian");
5bd4f169 2496 else
d003868e 2497 msg = _("%B: compiled for a little endian system "
4ce794b7 2498 "and target is big endian");
5bd4f169 2499
d003868e 2500 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2501
2502 bfd_set_error (bfd_error_wrong_format);
b34976b6 2503 return FALSE;
5bd4f169
AM		 2504 }
2505
b34976b6 2506 return TRUE;
5bd4f169 2507}
f0abc2a1 2508
5d35169e
AM		 2509/* Add extra PPC sections. */
2510
7f4d3958
L		 2511static struct bfd_elf_special_section const
2512 ppc64_special_sections_p[]=
2513{
2514 { ".plt", 4, 0, SHT_NOBITS, 0 },
2515 { NULL, 0, 0, 0, 0 }
2516};
2517
2518static struct bfd_elf_special_section const
2519 ppc64_special_sections_s[]=
5d35169e 2520{
7dcb9820
AM		 2521 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
7f4d3958
L		 2523 { NULL, 0, 0, 0, 0 }
2524};
2525
2526static struct bfd_elf_special_section const
2527 ppc64_special_sections_t[]=
2528{
7dcb9820
AM		 2529 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2530 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2531 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2532 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2533};
2534
7f4d3958
L		 2535static struct bfd_elf_special_section const *
2536 ppc64_elf_special_sections[27]=
2537{
2538 NULL, /* 'a' */
2539 NULL, /* 'b' */
2540 NULL, /* 'c' */
2541 NULL, /* 'd' */
2542 NULL, /* 'e' */
2543 NULL, /* 'f' */
2544 NULL, /* 'g' */
2545 NULL, /* 'h' */
2546 NULL, /* 'i' */
2547 NULL, /* 'j' */
2548 NULL, /* 'k' */
2549 NULL, /* 'l' */
2550 NULL, /* 'm' */
2551 NULL, /* 'n' */
2552 NULL, /* 'o' */
2553 ppc64_special_sections_p, /* 'p' */
2554 NULL, /* 'q' */
2555 NULL, /* 'r' */
2556 ppc64_special_sections_s, /* 's' */
2557 ppc64_special_sections_t, /* 't' */
2558 NULL, /* 'u' */
2559 NULL, /* 'v' */
2560 NULL, /* 'w' */
2561 NULL, /* 'x' */
2562 NULL, /* 'y' */
2563 NULL, /* 'z' */
2564 NULL /* other */
2565};
2566
f0abc2a1
AM		 2567struct _ppc64_elf_section_data
2568{
2569 struct bfd_elf_section_data elf;
411e1bfb
AM		 2570
2571 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2572 union
2573 {
411e1bfb 2574 /* Points to the function code section for local opd entries. */
f0abc2a1 2575 asection **func_sec;
411e1bfb 2576 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2577 long *adjust;
2578 } opd;
411e1bfb
AM		 2579
2580 /* An array for toc sections, indexed by offset/8.
2581 Specifies the relocation symbol index used at a given toc offset. */
2582 unsigned *t_symndx;
f0abc2a1
AM		 2583};
2584
2585#define ppc64_elf_section_data(sec) \
411e1bfb 2586 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2587
2588static bfd_boolean
4ce794b7 2589ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2590{
2591 struct _ppc64_elf_section_data *sdata;
2592 bfd_size_type amt = sizeof (*sdata);
2593
4ce794b7 2594 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2595 if (sdata == NULL)
2596 return FALSE;
4ce794b7 2597 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2598
2599 return _bfd_elf_new_section_hook (abfd, sec);
2600}
4025353c
AM		 2601
2602static void *
2603get_opd_info (asection * sec)
2604{
2605 if (sec != NULL
2606 && ppc64_elf_section_data (sec) != NULL
2607 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2608 return ppc64_elf_section_data (sec)->opd.adjust;
2609 return NULL;
2610}
90e3cdf2
JJ		 2611\f
2612/* Parameters for the qsort hook. */
2613static asection *synthetic_opd;
2614static bfd_boolean synthetic_relocatable;
2615
699733f6 2616/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2617
2618static int
2619compare_symbols (const void *ap, const void *bp)
2620{
2621 const asymbol *a = * (const asymbol **) ap;
2622 const asymbol *b = * (const asymbol **) bp;
2623
699733f6
AM		 2624 /* Section symbols first. */
2625 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2626 return -1;
699733f6 2627 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2628 return 1;
2629
699733f6 2630 /* then .opd symbols. */
90e3cdf2
JJ		 2631 if (a->section == synthetic_opd && b->section != synthetic_opd)
2632 return -1;
2633 if (a->section != synthetic_opd && b->section == synthetic_opd)
2634 return 1;
2635
699733f6 2636 /* then other code symbols. */
90e3cdf2
JJ		 2637 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2638 == (SEC_CODE | SEC_ALLOC)
2639 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2640 != (SEC_CODE | SEC_ALLOC))
2641 return -1;
2642
2643 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2644 != (SEC_CODE | SEC_ALLOC)
2645 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2646 == (SEC_CODE | SEC_ALLOC))
2647 return 1;
2648
2649 if (synthetic_relocatable)
2650 {
2651 if (a->section->id < b->section->id)
2652 return -1;
2653
2654 if (a->section->id > b->section->id)
2655 return 1;
2656 }
2657
2658 if (a->value + a->section->vma < b->value + b->section->vma)
2659 return -1;
2660
2661 if (a->value + a->section->vma > b->value + b->section->vma)
2662 return 1;
2663
2664 return 0;
2665}
2666
699733f6 2667/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2668
699733f6
AM		 2669static asymbol *
2670sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2671{
699733f6 2672 long mid;
90e3cdf2 2673
699733f6
AM		 2674 if (id == -1)
2675 {
2676 while (lo < hi)
2677 {
2678 mid = (lo + hi) >> 1;
2679 if (syms[mid]->value + syms[mid]->section->vma < value)
2680 lo = mid + 1;
2681 else if (syms[mid]->value + syms[mid]->section->vma > value)
2682 hi = mid;
2683 else
2684 return syms[mid];
2685 }
2686 }
2687 else
2688 {
2689 while (lo < hi)
2690 {
2691 mid = (lo + hi) >> 1;
2692 if (syms[mid]->section->id < id)
2693 lo = mid + 1;
2694 else if (syms[mid]->section->id > id)
2695 hi = mid;
2696 else if (syms[mid]->value < value)
2697 lo = mid + 1;
2698 else if (syms[mid]->value > value)
2699 hi = mid;
2700 else
2701 return syms[mid];
2702 }
2703 }
2704 return NULL;
90e3cdf2
JJ		 2705}
2706
699733f6
AM		 2707/* Create synthetic symbols, effectively restoring "dot-symbol" function
2708 entry syms. */
90e3cdf2
JJ		 2709
2710static long
a7535cf3
AM		 2711ppc64_elf_get_synthetic_symtab (bfd *abfd,
2712 long static_count, asymbol **static_syms,
2713 long dyn_count, asymbol **dyn_syms,
c9727e01 2714 asymbol **ret)
90e3cdf2
JJ		 2715{
2716 asymbol *s;
699733f6
AM		 2717 long i;
2718 long count;
90e3cdf2 2719 char *names;
a7535cf3 2720 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2721 asection *opd;
90e3cdf2 2722 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2723 asymbol **syms;
90e3cdf2
JJ		 2724
2725 *ret = NULL;
2726
2727 opd = bfd_get_section_by_name (abfd, ".opd");
2728 if (opd == NULL)
2729 return 0;
2730
a7535cf3 2731 symcount = static_count;
c9727e01 2732 if (!relocatable)
a7535cf3 2733 symcount += dyn_count;
90e3cdf2 2734 if (symcount == 0)
c9727e01 2735 return 0;
90e3cdf2 2736
a7535cf3
AM		 2737 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2738 if (syms == NULL)
7356fed5 2739 return -1;
a7535cf3
AM		 2740
2741 if (!relocatable && static_count != 0 && dyn_count != 0)
2742 {
2743 /* Use both symbol tables. */
2744 memcpy (syms, static_syms, static_count * sizeof (*syms));
2745 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2746 }
2747 else if (!relocatable && static_count == 0)
2748 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2749 else
2750 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2751
90e3cdf2
JJ		 2752 synthetic_opd = opd;
2753 synthetic_relocatable = relocatable;
595da8c5 2754 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2755
c9727e01
AM		 2756 if (!relocatable && symcount > 1)
2757 {
2758 long j;
2759 /* Trim duplicate syms, since we may have merged the normal and
2760 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2761 different values, so trim any with the same value. */
c9727e01
AM		 2762 for (i = 1, j = 1; i < symcount; ++i)
2763 if (syms[i - 1]->value + syms[i - 1]->section->vma
2764 != syms[i]->value + syms[i]->section->vma)
2765 syms[j++] = syms[i];
2766 symcount = j;
2767 }
2768
699733f6
AM		 2769 i = 0;
2770 if (syms[i]->section == opd)
2771 ++i;
2772 codesecsym = i;
90e3cdf2 2773
699733f6
AM		 2774 for (; i < symcount; ++i)
2775 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2776 != (SEC_CODE | SEC_ALLOC))
2777 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2778 break;
2779 codesecsymend = i;
90e3cdf2 2780
699733f6
AM		 2781 for (; i < symcount; ++i)
2782 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2783 break;
2784 secsymend = i;
90e3cdf2 2785
699733f6
AM		 2786 for (; i < symcount; ++i)
2787 if (syms[i]->section != opd)
2788 break;
2789 opdsymend = i;
90e3cdf2 2790
699733f6
AM		 2791 for (; i < symcount; ++i)
2792 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2793 != (SEC_CODE | SEC_ALLOC))
2794 break;
2795 symcount = i;
2796
c9727e01 2797 count = 0;
699733f6 2798 if (opdsymend == secsymend)
c9727e01 2799 goto done;
90e3cdf2 2800
699733f6 2801 if (relocatable)
90e3cdf2 2802 {
699733f6
AM		 2803 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2804 arelent *r;
2805 size_t size;
2806 long relcount;
90e3cdf2 2807
699733f6 2808 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2809 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2810 if (relcount == 0)
c9727e01 2811 goto done;
90e3cdf2 2812
7356fed5
AM		 2813 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2814 {
2815 count = -1;
2816 goto done;
2817 }
2818
699733f6 2819 size = 0;
595da8c5 2820 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2821 {
2822 asymbol *sym;
90e3cdf2 2823
595da8c5 2824 while (r < opd->relocation + relcount
699733f6
AM		 2825 && r->address < syms[i]->value + opd->vma)
2826 ++r;
90e3cdf2 2827
595da8c5 2828 if (r == opd->relocation + relcount)
699733f6 2829 break;
90e3cdf2 2830
699733f6
AM		 2831 if (r->address != syms[i]->value + opd->vma)
2832 continue;
90e3cdf2 2833
699733f6
AM		 2834 if (r->howto->type != R_PPC64_ADDR64)
2835 continue;
90e3cdf2 2836
699733f6
AM		 2837 sym = *r->sym_ptr_ptr;
2838 if (!sym_exists_at (syms, opdsymend, symcount,
2839 sym->section->id, sym->value + r->addend))
2840 {
2841 ++count;
2842 size += sizeof (asymbol);
2843 size += strlen (syms[i]->name) + 2;
2844 }
2845 }
90e3cdf2 2846
699733f6
AM		 2847 s = *ret = bfd_malloc (size);
2848 if (s == NULL)
2849 {
7356fed5 2850 count = -1;
c9727e01 2851 goto done;
699733f6 2852 }
90e3cdf2 2853
699733f6 2854 names = (char *) (s + count);
90e3cdf2 2855
595da8c5 2856 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2857 {
699733f6 2858 asymbol *sym;
90e3cdf2 2859
595da8c5 2860 while (r < opd->relocation + relcount
699733f6
AM		 2861 && r->address < syms[i]->value + opd->vma)
2862 ++r;
90e3cdf2 2863
595da8c5 2864 if (r == opd->relocation + relcount)
699733f6
AM		 2865 break;
2866
2867 if (r->address != syms[i]->value + opd->vma)
2868 continue;
2869
2870 if (r->howto->type != R_PPC64_ADDR64)
2871 continue;
90e3cdf2 2872
699733f6
AM		 2873 sym = *r->sym_ptr_ptr;
2874 if (!sym_exists_at (syms, opdsymend, symcount,
2875 sym->section->id, sym->value + r->addend))
2876 {
2877 size_t len;
2878
2879 *s = *syms[i];
2880 s->section = sym->section;
2881 s->value = sym->value + r->addend;
2882 s->name = names;
2883 *names++ = '.';
2884 len = strlen (syms[i]->name);
2885 memcpy (names, syms[i]->name, len + 1);
2886 names += len + 1;
2887 s++;
2888 }
2889 }
2890 }
2891 else
90e3cdf2 2892 {
699733f6
AM		 2893 bfd_byte *contents;
2894 size_t size;
90e3cdf2 2895
699733f6
AM		 2896 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2897 {
2898 if (contents)
c9727e01
AM		 2899 {
2900 free_contents_and_exit:
2901 free (contents);
2902 }
7356fed5 2903 count = -1;
c9727e01 2904 goto done;
699733f6 2905 }
90e3cdf2 2906
699733f6
AM		 2907 size = 0;
2908 for (i = secsymend; i < opdsymend; ++i)
2909 {
2910 bfd_vma ent;
90e3cdf2 2911
699733f6
AM		 2912 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2913 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2914 {
2915 ++count;
2916 size += sizeof (asymbol);
2917 size += strlen (syms[i]->name) + 2;
2918 }
2919 }
90e3cdf2 2920
699733f6
AM		 2921 s = *ret = bfd_malloc (size);
2922 if (s == NULL)
7356fed5 2923 goto free_contents_and_exit;
90e3cdf2 2924
699733f6 2925 names = (char *) (s + count);
90e3cdf2 2926
699733f6 2927 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2928 {
699733f6 2929 bfd_vma ent;
90e3cdf2 2930
699733f6
AM		 2931 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2932 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2933 {
c9727e01 2934 long lo, hi;
699733f6 2935 size_t len;
c9727e01 2936 asection *sec = abfd->sections;
90e3cdf2 2937
699733f6
AM		 2938 *s = *syms[i];
2939 lo = codesecsym;
2940 hi = codesecsymend;
2941 while (lo < hi)
2942 {
c9727e01 2943 long mid = (lo + hi) >> 1;
699733f6
AM		 2944 if (syms[mid]->section->vma < ent)
2945 lo = mid + 1;
2946 else if (syms[mid]->section->vma > ent)
2947 hi = mid;
2948 else
c9727e01
AM		 2949 {
2950 sec = syms[mid]->section;
2951 break;
2952 }
699733f6
AM		 2953 }
2954
c9727e01 2955 if (lo >= hi && lo > codesecsym)
699733f6 2956 sec = syms[lo - 1]->section;
699733f6
AM		 2957
2958 for (; sec != NULL; sec = sec->next)
2959 {
2960 if (sec->vma > ent)
2961 break;
2962 if ((sec->flags & SEC_ALLOC) == 0
2963 || (sec->flags & SEC_LOAD) == 0)
2964 break;
2965 if ((sec->flags & SEC_CODE) != 0)
2966 s->section = sec;
2967 }
2968 s->value = ent - s->section->vma;
2969 s->name = names;
2970 *names++ = '.';
2971 len = strlen (syms[i]->name);
2972 memcpy (names, syms[i]->name, len + 1);
2973 names += len + 1;
2974 s++;
90e3cdf2 2975 }
90e3cdf2 2976 }
699733f6 2977 free (contents);
90e3cdf2
JJ		 2978 }
2979
c9727e01 2980 done:
a7535cf3 2981 free (syms);
90e3cdf2
JJ		 2982 return count;
2983}
5bd4f169 2984\f
65f38f15
AM		 2985/* The following functions are specific to the ELF linker, while
2986 functions above are used generally. Those named ppc64_elf_* are
2987 called by the main ELF linker code. They appear in this file more
2988 or less in the order in which they are called. eg.
2989 ppc64_elf_check_relocs is called early in the link process,
2990 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2991 called.
2992
2993 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2994 functions have both a function code symbol and a function descriptor
2995 symbol. A call to foo in a relocatable object file looks like:
2996
2997 . .text
2998 . x:
2999 . bl .foo
3000 . nop
3001
3002 The function definition in another object file might be:
3003
3004 . .section .opd
3005 . foo: .quad .foo
3006 . .quad .TOC.@tocbase
3007 . .quad 0
3008 .
3009 . .text
3010 . .foo: blr
3011
3012 When the linker resolves the call during a static link, the branch
3013 unsurprisingly just goes to .foo and the .opd information is unused.
3014 If the function definition is in a shared library, things are a little
3015 different: The call goes via a plt call stub, the opd information gets
3016 copied to the plt, and the linker patches the nop.
3017
3018 . x:
3019 . bl .foo_stub
3020 . ld 2,40(1)
3021 .
3022 .
3023 . .foo_stub:
3024 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3025 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3026 . std 2,40(1) # this is the general idea
3027 . ld 11,0(12)
3028 . ld 2,8(12)
3029 . mtctr 11
3030 . ld 11,16(12)
3031 . bctr
3032 .
3033 . .section .plt
3034 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3035
3036 The "reloc ()" notation is supposed to indicate that the linker emits
3037 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3038 copying.
3039
3040 What are the difficulties here? Well, firstly, the relocations
3041 examined by the linker in check_relocs are against the function code
3042 sym .foo, while the dynamic relocation in the plt is emitted against
3043 the function descriptor symbol, foo. Somewhere along the line, we need
3044 to carefully copy dynamic link information from one symbol to the other.
3045 Secondly, the generic part of the elf linker will make .foo a dynamic
3046 symbol as is normal for most other backends. We need foo dynamic
3047 instead, at least for an application final link. However, when
3048 creating a shared library containing foo, we need to have both symbols
3049 dynamic so that references to .foo are satisfied during the early
3050 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3051 definition from some other object, eg. a static library.
3052
3053 Update: As of August 2004, we support a new convention. Function
3054 calls may use the function descriptor symbol, ie. "bl foo". This
3055 behaves exactly as "bl .foo". */
65f38f15
AM		 3056
3057/* The linker needs to keep track of the number of relocs that it
3058 decides to copy as dynamic relocs in check_relocs for each symbol.
3059 This is so that it can later discard them if they are found to be
3060 unnecessary. We store the information in a field extending the
3061 regular ELF linker hash table. */
3062
3063struct ppc_dyn_relocs
3064{
3065 struct ppc_dyn_relocs *next;
3066
3067 /* The input section of the reloc. */
3068 asection *sec;
3069
3070 /* Total number of relocs copied for the input section. */
3071 bfd_size_type count;
3072
3073 /* Number of pc-relative relocs copied for the input section. */
3074 bfd_size_type pc_count;
3075};
3076
411e1bfb
AM		 3077/* Track GOT entries needed for a given symbol. We might need more
3078 than one got entry per symbol. */
3079struct got_entry
3080{
3081 struct got_entry *next;
3082
e7b938ca 3083 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3084 bfd_vma addend;
3085
e717da7e
AM		 3086 /* Unlike other ELF targets, we use separate GOT entries for the same
3087 symbol referenced from different input files. This is to support
3088 automatic multiple TOC/GOT sections, where the TOC base can vary
3089 from one input file to another.
3090
3091 Point to the BFD owning this GOT entry. */
3092 bfd *owner;
3093
3094 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3095 TLS_TPREL or TLS_DTPREL for tls entries. */
3096 char tls_type;
3097
e7b938ca 3098 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3099 union
3100 {
3101 bfd_signed_vma refcount;
3102 bfd_vma offset;
3103 } got;
411e1bfb
AM		 3104};
3105
3106/* The same for PLT. */
3107struct plt_entry
3108{
3109 struct plt_entry *next;
3110
3111 bfd_vma addend;
3112
3113 union
3114 {
3115 bfd_signed_vma refcount;
3116 bfd_vma offset;
3117 } plt;
3118};
3119
65f38f15 3120/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3121 selects those that must be copied when linking a shared library,
3122 even when the symbol is local. */
65f38f15 3123
411e1bfb 3124#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3125 ((RTYPE) != R_PPC64_REL32 \
3126 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3127 && (RTYPE) != R_PPC64_REL30)
65f38f15 3128
f4656909
AM		 3129/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3130 copying dynamic variables from a shared lib into an app's dynbss
3131 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3132 shared lib. With code that gcc generates, it's vital that this be
3133 enabled; In the PowerPC64 ABI, the address of a function is actually
3134 the address of a function descriptor, which resides in the .opd
3135 section. gcc uses the descriptor directly rather than going via the
3136 GOT as some other ABI's do, which means that initialized function
3137 pointers must reference the descriptor. Thus, a function pointer
3138 initialized to the address of a function in a shared library will
3139 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3140 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3141 presents a problem as a plt entry for that function is also
3142 initialized from the function descriptor symbol and the copy reloc
3143 may not be initialized first. */
a23b6845 3144#define ELIMINATE_COPY_RELOCS 1
f4656909 3145
721956f4
AM		 3146/* Section name for stubs is the associated section name plus this
3147 string. */
3148#define STUB_SUFFIX ".stub"
3149
3150/* Linker stubs.
3151 ppc_stub_long_branch:
3152 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3153 destination, but a 24 bit branch in a stub section will reach.
3154 . b dest
3155
3156 ppc_stub_plt_branch:
3157 Similar to the above, but a 24 bit branch in the stub section won't
3158 reach its destination.
87e226ce
AM		 3159 . addis %r12,%r2,xxx@toc@ha
3160 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3161 . mtctr %r11
3162 . bctr
3163
3164 ppc_stub_plt_call:
2c66dc6c
AM		 3165 Used to call a function in a shared library. If it so happens that
3166 the plt entry referenced crosses a 64k boundary, then an extra
3167 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3168 xxx+16 as appropriate.
87e226ce 3169 . addis %r12,%r2,xxx@toc@ha
721956f4 3170 . std %r2,40(%r1)
87e226ce
AM		 3171 . ld %r11,xxx+0@toc@l(%r12)
3172 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3173 . mtctr %r11
87e226ce 3174 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3175 . bctr
ad8e1ba5
AM		 3176
3177 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3178 code to adjust the value and save r2 to support multiple toc sections.
3179 A ppc_stub_long_branch with an r2 offset looks like:
3180 . std %r2,40(%r1)
3181 . addis %r2,%r2,off@ha
3182 . addi %r2,%r2,off@l
3183 . b dest
3184
3185 A ppc_stub_plt_branch with an r2 offset looks like:
3186 . std %r2,40(%r1)
3187 . addis %r12,%r2,xxx@toc@ha
3188 . ld %r11,xxx@toc@l(%r12)
3189 . addis %r2,%r2,off@ha
3190 . addi %r2,%r2,off@l
3191 . mtctr %r11
3192 . bctr
721956f4
AM		 3193*/
3194
3195enum ppc_stub_type {
3196 ppc_stub_none,
3197 ppc_stub_long_branch,
ad8e1ba5 3198 ppc_stub_long_branch_r2off,
721956f4 3199 ppc_stub_plt_branch,
ad8e1ba5 3200 ppc_stub_plt_branch_r2off,
721956f4
AM		 3201 ppc_stub_plt_call
3202};
3203
3204struct ppc_stub_hash_entry {
3205
3206 /* Base hash table entry structure. */
3207 struct bfd_hash_entry root;
3208
ad8e1ba5
AM		 3209 enum ppc_stub_type stub_type;
3210
721956f4
AM		 3211 /* The stub section. */
3212 asection *stub_sec;
3213
3214 /* Offset within stub_sec of the beginning of this stub. */
3215 bfd_vma stub_offset;
3216
3217 /* Given the symbol's value and its section we can determine its final
3218 value when building the stubs (so the stub knows where to jump. */
3219 bfd_vma target_value;
3220 asection *target_section;
3221
721956f4
AM		 3222 /* The symbol table entry, if any, that this was derived from. */
3223 struct ppc_link_hash_entry *h;
3224
411e1bfb
AM		 3225 /* And the reloc addend that this was derived from. */
3226 bfd_vma addend;
3227
721956f4
AM		 3228 /* Where this stub is being called from, or, in the case of combined
3229 stub sections, the first input section in the group. */
3230 asection *id_sec;
3231};
3232
3233struct ppc_branch_hash_entry {
3234
3235 /* Base hash table entry structure. */
3236 struct bfd_hash_entry root;
3237
3238 /* Offset within .branch_lt. */
3239 unsigned int offset;
3240
3241 /* Generation marker. */
3242 unsigned int iter;
3243};
65f38f15
AM		 3244
3245struct ppc_link_hash_entry
3246{
3247 struct elf_link_hash_entry elf;
3248
721956f4
AM		 3249 /* A pointer to the most recently used stub hash entry against this
3250 symbol. */
3251 struct ppc_stub_hash_entry *stub_cache;
3252
65f38f15
AM		 3253 /* Track dynamic relocs copied for this symbol. */
3254 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3255
721956f4 3256 /* Link between function code and descriptor symbols. */
34814b9f 3257 struct ppc_link_hash_entry *oh;
721956f4 3258
e86ce104
AM		 3259 /* Flag function code and descriptor symbols. */
3260 unsigned int is_func:1;
3261 unsigned int is_func_descriptor:1;
908b32fc 3262 unsigned int fake:1;
411e1bfb 3263
c5614fa4
AM		 3264 /* Whether global opd/toc sym has been adjusted or not.
3265 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3266 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3267 unsigned int adjust_done:1;
3268
99877b66
AM		 3269 /* Set if we twiddled this symbol to weak at some stage. */
3270 unsigned int was_undefined:1;
3271
411e1bfb 3272 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3273 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3274 corresponding relocs are encountered during check_relocs.
3275 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3276 indicate the corresponding GOT entry type is not needed.
3277 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3278 a TPREL one. We use a separate flag rather than setting TPREL
3279 just for convenience in distinguishing the two cases. */
3280#define TLS_GD 1 /* GD reloc. */
3281#define TLS_LD 2 /* LD reloc. */
3282#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3283#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3284#define TLS_TLS 16 /* Any TLS reloc. */
3285#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3286#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3287 char tls_mask;
65f38f15
AM		 3288};
3289
3290/* ppc64 ELF linker hash table. */
3291
3292struct ppc_link_hash_table
3293{
3294 struct elf_link_hash_table elf;
3295
721956f4
AM		 3296 /* The stub hash table. */
3297 struct bfd_hash_table stub_hash_table;
3298
3299 /* Another hash table for plt_branch stubs. */
3300 struct bfd_hash_table branch_hash_table;
3301
3302 /* Linker stub bfd. */
3303 bfd *stub_bfd;
3304
3305 /* Linker call-backs. */
4ce794b7
AM		 3306 asection * (*add_stub_section) (const char *, asection *);
3307 void (*layout_sections_again) (void);
721956f4
AM		 3308
3309 /* Array to keep track of which stub sections have been created, and
3310 information on stub grouping. */
3311 struct map_stub {
3312 /* This is the section to which stubs in the group will be attached. */
3313 asection *link_sec;
3314 /* The stub section. */
3315 asection *stub_sec;
ad8e1ba5
AM		 3316 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3317 bfd_vma toc_off;
721956f4
AM		 3318 } *stub_group;
3319
ad8e1ba5
AM		 3320 /* Temp used when calculating TOC pointers. */
3321 bfd_vma toc_curr;
3322
8f3bab57
AM		 3323 /* Highest input section id. */
3324 int top_id;
3325
734b6cf9
AM		 3326 /* Highest output section index. */
3327 int top_index;
3328
3329 /* List of input sections for each output section. */
3330 asection **input_list;
721956f4 3331
65f38f15 3332 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3333 asection *got;
4ce794b7
AM		 3334 asection *plt;
3335 asection *relplt;
3336 asection *dynbss;
3337 asection *relbss;
3338 asection *glink;
82bd7b59 3339 asection *sfpr;
4ce794b7
AM		 3340 asection *brlt;
3341 asection *relbrlt;
ec338859 3342
8387904d
AM		 3343 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3344 struct ppc_link_hash_entry *tls_get_addr;
3345 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3346
9b5ecbd0
AM		 3347 /* Statistics. */
3348 unsigned long stub_count[ppc_stub_plt_call];
3349
ee75fd95
AM		 3350 /* Number of stubs against global syms. */
3351 unsigned long stub_globals;
3352
ad8e1ba5 3353 /* Set if we should emit symbols for stubs. */
99877b66 3354 unsigned int emit_stub_syms:1;
ad8e1ba5 3355
4c52953f
AM		 3356 /* Support for multiple toc sections. */
3357 unsigned int no_multi_toc:1;
3358 unsigned int multi_toc_needed:1;
3359
5d1634d7 3360 /* Set on error. */
99877b66 3361 unsigned int stub_error:1;
721956f4
AM		 3362
3363 /* Flag set when small branches are detected. Used to
3364 select suitable defaults for the stub group size. */
99877b66
AM		 3365 unsigned int has_14bit_branch:1;
3366
3367 /* Temp used by ppc64_elf_check_directives. */
3368 unsigned int twiddled_syms:1;
721956f4
AM		 3369
3370 /* Incremented every time we size stubs. */
3371 unsigned int stub_iteration;
5d1634d7 3372
ec338859
AM		 3373 /* Small local sym to section mapping cache. */
3374 struct sym_sec_cache sym_sec;
65f38f15
AM		 3375};
3376
4c52953f
AM		 3377/* Rename some of the generic section flags to better document how they
3378 are used here. */
3379#define has_toc_reloc has_gp_reloc
3380#define makes_toc_func_call need_finalize_relax
3381#define call_check_in_progress reloc_done
3382
65f38f15
AM		 3383/* Get the ppc64 ELF linker hash table from a link_info structure. */
3384
3385#define ppc_hash_table(p) \
3386 ((struct ppc_link_hash_table *) ((p)->hash))
3387
721956f4
AM		 3388#define ppc_stub_hash_lookup(table, string, create, copy) \
3389 ((struct ppc_stub_hash_entry *) \
3390 bfd_hash_lookup ((table), (string), (create), (copy)))
3391
3392#define ppc_branch_hash_lookup(table, string, create, copy) \
3393 ((struct ppc_branch_hash_entry *) \
3394 bfd_hash_lookup ((table), (string), (create), (copy)))
3395
3396/* Create an entry in the stub hash table. */
3397
3398static struct bfd_hash_entry *
4ce794b7
AM		 3399stub_hash_newfunc (struct bfd_hash_entry *entry,
3400 struct bfd_hash_table *table,
3401 const char *string)
721956f4
AM		 3402{
3403 /* Allocate the structure if it has not already been allocated by a
3404 subclass. */
3405 if (entry == NULL)
3406 {
3407 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3408 if (entry == NULL)
3409 return entry;
3410 }
3411
3412 /* Call the allocation method of the superclass. */
3413 entry = bfd_hash_newfunc (entry, table, string);
3414 if (entry != NULL)
3415 {
3416 struct ppc_stub_hash_entry *eh;
3417
3418 /* Initialize the local fields. */
3419 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3420 eh->stub_type = ppc_stub_none;
721956f4
AM		 3421 eh->stub_sec = NULL;
3422 eh->stub_offset = 0;
3423 eh->target_value = 0;
3424 eh->target_section = NULL;
721956f4
AM		 3425 eh->h = NULL;
3426 eh->id_sec = NULL;
3427 }
3428
3429 return entry;
3430}
3431
3432/* Create an entry in the branch hash table. */
3433
3434static struct bfd_hash_entry *
4ce794b7
AM		 3435branch_hash_newfunc (struct bfd_hash_entry *entry,
3436 struct bfd_hash_table *table,
3437 const char *string)
721956f4
AM		 3438{
3439 /* Allocate the structure if it has not already been allocated by a
3440 subclass. */
3441 if (entry == NULL)
3442 {
3443 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3444 if (entry == NULL)
3445 return entry;
3446 }
3447
3448 /* Call the allocation method of the superclass. */
3449 entry = bfd_hash_newfunc (entry, table, string);
3450 if (entry != NULL)
3451 {
3452 struct ppc_branch_hash_entry *eh;
3453
3454 /* Initialize the local fields. */
3455 eh = (struct ppc_branch_hash_entry *) entry;
3456 eh->offset = 0;
3457 eh->iter = 0;
3458 }
3459
3460 return entry;
3461}
3462
65f38f15
AM		 3463/* Create an entry in a ppc64 ELF linker hash table. */
3464
3465static struct bfd_hash_entry *
4ce794b7
AM		 3466link_hash_newfunc (struct bfd_hash_entry *entry,
3467 struct bfd_hash_table *table,
3468 const char *string)
65f38f15
AM		 3469{
3470 /* Allocate the structure if it has not already been allocated by a
3471 subclass. */
3472 if (entry == NULL)
3473 {
3474 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3475 if (entry == NULL)
3476 return entry;
3477 }
3478
3479 /* Call the allocation method of the superclass. */
3480 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3481 if (entry != NULL)
3482 {
3483 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3484
908b32fc
AM		 3485 memset (&eh->stub_cache, 0,
3486 (sizeof (struct ppc_link_hash_entry)
3487 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3488 }
3489
3490 return entry;
3491}
3492
3493/* Create a ppc64 ELF linker hash table. */
3494
3495static struct bfd_link_hash_table *
4ce794b7 3496ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3497{
3498 struct ppc_link_hash_table *htab;
3499 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3500
4ce794b7 3501 htab = bfd_zmalloc (amt);
65f38f15
AM		 3502 if (htab == NULL)
3503 return NULL;
3504
3505 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3506 {
e2d34d7d 3507 free (htab);
65f38f15
AM		 3508 return NULL;
3509 }
3510
721956f4
AM		 3511 /* Init the stub hash table too. */
3512 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3513 return NULL;
3514
3515 /* And the branch hash table. */
3516 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3517 return NULL;
3518
3254fd24
AM		 3519 /* Initializing two fields of the union is just cosmetic. We really
3520 only care about glist, but when compiled on a 32-bit host the
3521 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3522 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3523 htab->elf.init_got_refcount.refcount = 0;
3524 htab->elf.init_got_refcount.glist = NULL;
3525 htab->elf.init_plt_refcount.refcount = 0;
3526 htab->elf.init_plt_refcount.glist = NULL;
3527 htab->elf.init_got_offset.offset = 0;
3528 htab->elf.init_got_offset.glist = NULL;
3529 htab->elf.init_plt_offset.offset = 0;
3530 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3531
65f38f15
AM		 3532 return &htab->elf.root;
3533}
3534
721956f4
AM		 3535/* Free the derived linker hash table. */
3536
3537static void
4ce794b7 3538ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3539{
3540 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3541
3542 bfd_hash_table_free (&ret->stub_hash_table);
3543 bfd_hash_table_free (&ret->branch_hash_table);
3544 _bfd_generic_link_hash_table_free (hash);
3545}
3546
e717da7e
AM		 3547/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3548
3549void
3550ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3551{
3552 struct ppc_link_hash_table *htab;
3553
3554 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3555
3556/* Always hook our dynamic sections into the first bfd, which is the
3557 linker created stub bfd. This ensures that the GOT header is at
3558 the start of the output TOC section. */
3559 htab = ppc_hash_table (info);
3560 htab->stub_bfd = abfd;
3561 htab->elf.dynobj = abfd;
3562}
3563
721956f4
AM		 3564/* Build a name for an entry in the stub hash table. */
3565
3566static char *
4ce794b7
AM		 3567ppc_stub_name (const asection *input_section,
3568 const asection *sym_sec,
3569 const struct ppc_link_hash_entry *h,
3570 const Elf_Internal_Rela *rel)
721956f4
AM		 3571{
3572 char *stub_name;
3573 bfd_size_type len;
3574
3575 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3576 offsets from a sym as a branch target? In fact, we could
3577 probably assume the addend is always zero. */
3578 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3579
3580 if (h)
3581 {
3582 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3583 stub_name = bfd_malloc (len);
46de2a7c
AM		 3584 if (stub_name == NULL)
3585 return stub_name;
3586
3587 sprintf (stub_name, "%08x.%s+%x",
3588 input_section->id & 0xffffffff,
3589 h->elf.root.root.string,
3590 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3591 }
3592 else
3593 {
ad8e1ba5 3594 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3595 stub_name = bfd_malloc (len);
46de2a7c
AM		 3596 if (stub_name == NULL)
3597 return stub_name;
3598
3599 sprintf (stub_name, "%08x.%x:%x+%x",
3600 input_section->id & 0xffffffff,
3601 sym_sec->id & 0xffffffff,
3602 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3603 (int) rel->r_addend & 0xffffffff);
721956f4 3604 }
ee75fd95
AM		 3605 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3606 stub_name[len - 2] = 0;
721956f4
AM		 3607 return stub_name;
3608}
3609
3610/* Look up an entry in the stub hash. Stub entries are cached because
3611 creating the stub name takes a bit of time. */
3612
3613static struct ppc_stub_hash_entry *
4ce794b7
AM		 3614ppc_get_stub_entry (const asection *input_section,
3615 const asection *sym_sec,
039b3fef 3616 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3617 const Elf_Internal_Rela *rel,
3618 struct ppc_link_hash_table *htab)
721956f4
AM		 3619{
3620 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3621 const asection *id_sec;
3622
3623 /* If this input section is part of a group of sections sharing one
3624 stub section, then use the id of the first section in the group.
3625 Stub names need to include a section id, as there may well be
3626 more than one stub used to reach say, printf, and we need to
3627 distinguish between them. */
3628 id_sec = htab->stub_group[input_section->id].link_sec;
3629
3630 if (h != NULL && h->stub_cache != NULL
3631 && h->stub_cache->h == h
3632 && h->stub_cache->id_sec == id_sec)
3633 {
3634 stub_entry = h->stub_cache;
3635 }
3636 else
3637 {
3638 char *stub_name;
3639
3640 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3641 if (stub_name == NULL)
3642 return NULL;
3643
3644 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3645 stub_name, FALSE, FALSE);
721956f4
AM		 3646 if (h != NULL)
3647 h->stub_cache = stub_entry;
3648
3649 free (stub_name);
3650 }
3651
3652 return stub_entry;
3653}
3654
3655/* Add a new stub entry to the stub hash. Not all fields of the new
3656 stub entry are initialised. */
3657
3658static struct ppc_stub_hash_entry *
4ce794b7
AM		 3659ppc_add_stub (const char *stub_name,
3660 asection *section,
3661 struct ppc_link_hash_table *htab)
721956f4
AM		 3662{
3663 asection *link_sec;
3664 asection *stub_sec;
3665 struct ppc_stub_hash_entry *stub_entry;
3666
3667 link_sec = htab->stub_group[section->id].link_sec;
3668 stub_sec = htab->stub_group[section->id].stub_sec;
3669 if (stub_sec == NULL)
3670 {
3671 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3672 if (stub_sec == NULL)
3673 {
d4c88bbb 3674 size_t namelen;
721956f4
AM		 3675 bfd_size_type len;
3676 char *s_name;
3677
d4c88bbb
AM		 3678 namelen = strlen (link_sec->name);
3679 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3680 s_name = bfd_alloc (htab->stub_bfd, len);
3681 if (s_name == NULL)
3682 return NULL;
3683
d4c88bbb
AM		 3684 memcpy (s_name, link_sec->name, namelen);
3685 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3686 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3687 if (stub_sec == NULL)
3688 return NULL;
3689 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3690 }
3691 htab->stub_group[section->id].stub_sec = stub_sec;
3692 }
3693
3694 /* Enter this entry into the linker stub hash table. */
3695 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3696 TRUE, FALSE);
721956f4
AM		 3697 if (stub_entry == NULL)
3698 {
d003868e
AM		 3699 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3700 section->owner, stub_name);
721956f4
AM		 3701 return NULL;
3702 }
3703
3704 stub_entry->stub_sec = stub_sec;
3705 stub_entry->stub_offset = 0;
3706 stub_entry->id_sec = link_sec;
3707 return stub_entry;
3708}
3709
82bd7b59
AM		 3710/* Create sections for linker generated code. */
3711
b34976b6 3712static bfd_boolean
4ce794b7 3713create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3714{
3715 struct ppc_link_hash_table *htab;
3716 flagword flags;
3717
3718 htab = ppc_hash_table (info);
3719
3720 /* Create .sfpr for code to save and restore fp regs. */
3721 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3722 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3723 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3724 flags);
82bd7b59 3725 if (htab->sfpr == NULL
82bd7b59 3726 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3727 return FALSE;
82bd7b59 3728
721956f4 3729 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 3730 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3731 flags);
4ce794b7 3732 if (htab->glink == NULL
4ce794b7 3733 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3734 return FALSE;
82bd7b59 3735
721956f4
AM		 3736 /* Create .branch_lt for plt_branch stubs. */
3737 flags = (SEC_ALLOC | SEC_LOAD
3738 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3739 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3740 flags);
4ce794b7 3741 if (htab->brlt == NULL
4ce794b7 3742 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3743 return FALSE;
721956f4 3744
ee75fd95 3745 if (info->shared || info->emitrelocations)
721956f4
AM		 3746 {
3747 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3748 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 3749 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3750 ".rela.branch_lt",
3751 flags);
4ce794b7 3752 if (!htab->relbrlt
4ce794b7 3753 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3754 return FALSE;
721956f4 3755 }
b34976b6 3756 return TRUE;
82bd7b59
AM		 3757}
3758
e717da7e
AM		 3759/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3760 not already done. */
65f38f15 3761
b34976b6 3762static bfd_boolean
e717da7e 3763create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3764{
e717da7e
AM		 3765 asection *got, *relgot;
3766 flagword flags;
3767 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3768
4ce794b7 3769 if (!htab->got)
e717da7e
AM		 3770 {
3771 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3772 return FALSE;
3773
3774 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3775 if (!htab->got)
3776 abort ();
3777 }
3778
3779 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3780 | SEC_LINKER_CREATED);
3781
3496cb2a 3782 got = bfd_make_section_with_flags (abfd, ".got", flags);
e717da7e 3783 if (!got
e717da7e
AM		 3784 || !bfd_set_section_alignment (abfd, got, 3))
3785 return FALSE;
65f38f15 3786
3496cb2a
L		 3787 relgot = bfd_make_section_with_flags (abfd, ".rela.got",
3788 flags | SEC_READONLY);
e717da7e 3789 if (!relgot
e717da7e 3790 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3791 return FALSE;
e717da7e
AM		 3792
3793 ppc64_elf_tdata (abfd)->got = got;
3794 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3795 return TRUE;
65f38f15 3796}
5bd4f169 3797
82bd7b59 3798/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3799
b34976b6 3800static bfd_boolean
4ce794b7 3801ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3802{
65f38f15 3803 struct ppc_link_hash_table *htab;
5bd4f169 3804
65f38f15 3805 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3806 return FALSE;
65f38f15 3807
e717da7e
AM		 3808 htab = ppc_hash_table (info);
3809 if (!htab->got)
3810 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3811 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3812 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3813 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3814 if (!info->shared)
4ce794b7 3815 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3816
e717da7e 3817 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3818 || (!info->shared && !htab->relbss))
65f38f15
AM		 3819 abort ();
3820
b34976b6 3821 return TRUE;
5bd4f169
AM		 3822}
3823
40d16e0b
AM		 3824/* Merge PLT info on FROM with that on TO. */
3825
3826static void
3827move_plt_plist (struct ppc_link_hash_entry *from,
3828 struct ppc_link_hash_entry *to)
3829{
3830 if (from->elf.plt.plist != NULL)
3831 {
3832 if (to->elf.plt.plist != NULL)
3833 {
3834 struct plt_entry **entp;
3835 struct plt_entry *ent;
3836
3837 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3838 {
3839 struct plt_entry *dent;
3840
3841 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3842 if (dent->addend == ent->addend)
3843 {
3844 dent->plt.refcount += ent->plt.refcount;
3845 *entp = ent->next;
3846 break;
3847 }
3848 if (dent == NULL)
3849 entp = &ent->next;
3850 }
3851 *entp = to->elf.plt.plist;
3852 }
3853
3854 to->elf.plt.plist = from->elf.plt.plist;
3855 from->elf.plt.plist = NULL;
3856 }
3857}
3858
65f38f15
AM		 3859/* Copy the extra info we tack onto an elf_link_hash_entry. */
3860
3861static void
9c5bfbb7
AM		 3862ppc64_elf_copy_indirect_symbol
3863 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3864 struct elf_link_hash_entry *dir,
3865 struct elf_link_hash_entry *ind)
65f38f15
AM		 3866{
3867 struct ppc_link_hash_entry *edir, *eind;
3868
3869 edir = (struct ppc_link_hash_entry *) dir;
3870 eind = (struct ppc_link_hash_entry *) ind;
3871
411e1bfb 3872 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3873 if (eind->dyn_relocs != NULL)
65f38f15 3874 {
bbd7ec4a
AM		 3875 if (edir->dyn_relocs != NULL)
3876 {
3877 struct ppc_dyn_relocs **pp;
3878 struct ppc_dyn_relocs *p;
3879
411e1bfb 3880 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3881 abort ();
3882
3883 /* Add reloc counts against the weak sym to the strong sym
3884 list. Merge any entries against the same section. */
3885 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3886 {
3887 struct ppc_dyn_relocs *q;
3888
3889 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3890 if (q->sec == p->sec)
3891 {
3892 q->pc_count += p->pc_count;
3893 q->count += p->count;
3894 *pp = p->next;
3895 break;
3896 }
3897 if (q == NULL)
3898 pp = &p->next;
3899 }
3900 *pp = edir->dyn_relocs;
3901 }
3902
65f38f15
AM		 3903 edir->dyn_relocs = eind->dyn_relocs;
3904 eind->dyn_relocs = NULL;
3905 }
65f38f15 3906
6349e628
AM		 3907 edir->is_func |= eind->is_func;
3908 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3909 edir->tls_mask |= eind->tls_mask;
6349e628 3910
81848ca0 3911 /* If called to transfer flags for a weakdef during processing
f5385ebf 3912 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3913 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3914 if (!(ELIMINATE_COPY_RELOCS
3915 && eind->elf.root.type != bfd_link_hash_indirect
3916 && edir->elf.dynamic_adjusted))
3917 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3918
f5385ebf
AM		 3919 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3920 edir->elf.ref_regular |= eind->elf.ref_regular;
3921 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3922 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3923
3924 /* If we were called to copy over info for a weak sym, that's all. */
3925 if (eind->elf.root.type != bfd_link_hash_indirect)
3926 return;
3927
81848ca0
AM		 3928 /* Copy over got entries that we may have already seen to the
3929 symbol which just became indirect. */
411e1bfb
AM		 3930 if (eind->elf.got.glist != NULL)
3931 {
3932 if (edir->elf.got.glist != NULL)
3933 {
3934 struct got_entry **entp;
3935 struct got_entry *ent;
3936
3937 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3938 {
3939 struct got_entry *dent;
3940
3941 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3942 if (dent->addend == ent->addend
e717da7e 3943 && dent->owner == ent->owner
411e1bfb
AM		 3944 && dent->tls_type == ent->tls_type)
3945 {
3946 dent->got.refcount += ent->got.refcount;
3947 *entp = ent->next;
3948 break;
3949 }
3950 if (dent == NULL)
3951 entp = &ent->next;
3952 }
3953 *entp = edir->elf.got.glist;
3954 }
3955
3956 edir->elf.got.glist = eind->elf.got.glist;
3957 eind->elf.got.glist = NULL;
3958 }
3959
3960 /* And plt entries. */
40d16e0b 3961 move_plt_plist (eind, edir);
411e1bfb 3962
411e1bfb
AM		 3963 if (edir->elf.dynindx == -1)
3964 {
3965 edir->elf.dynindx = eind->elf.dynindx;
3966 edir->elf.dynstr_index = eind->elf.dynstr_index;
3967 eind->elf.dynindx = -1;
3968 eind->elf.dynstr_index = 0;
3969 }
3970 else
3971 BFD_ASSERT (eind->elf.dynindx == -1);
3972}
3973
8387904d
AM		 3974/* Find the function descriptor hash entry from the given function code
3975 hash entry FH. Link the entries via their OH fields. */
3976
3977static struct ppc_link_hash_entry *
3978get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3979{
3980 struct ppc_link_hash_entry *fdh = fh->oh;
3981
3982 if (fdh == NULL)
3983 {
3984 const char *fd_name = fh->elf.root.root.string + 1;
3985
3986 fdh = (struct ppc_link_hash_entry *)
3987 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3988 if (fdh != NULL)
3989 {
3990 fdh->is_func_descriptor = 1;
3991 fdh->oh = fh;
3992 fh->is_func = 1;
3993 fh->oh = fdh;
3994 }
3995 }
3996
3997 return fdh;
3998}
3999
bb700d78
AM		 4000/* Make a fake function descriptor sym for the code sym FH. */
4001
4002static struct ppc_link_hash_entry *
4003make_fdh (struct bfd_link_info *info,
908b32fc 4004 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4005{
4006 bfd *abfd;
4007 asymbol *newsym;
4008 struct bfd_link_hash_entry *bh;
4009 struct ppc_link_hash_entry *fdh;
4010
4011 abfd = fh->elf.root.u.undef.abfd;
4012 newsym = bfd_make_empty_symbol (abfd);
4013 newsym->name = fh->elf.root.root.string + 1;
4014 newsym->section = bfd_und_section_ptr;
4015 newsym->value = 0;
908b32fc 4016 newsym->flags = BSF_WEAK;
bb700d78
AM		 4017
4018 bh = NULL;
4019 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4020 newsym->flags, newsym->section,
4021 newsym->value, NULL, FALSE, FALSE,
4022 &bh))
4023 return NULL;
4024
4025 fdh = (struct ppc_link_hash_entry *) bh;
4026 fdh->elf.non_elf = 0;
908b32fc
AM		 4027 fdh->fake = 1;
4028 fdh->is_func_descriptor = 1;
4029 fdh->oh = fh;
4030 fh->is_func = 1;
4031 fh->oh = fdh;
bb700d78
AM		 4032 return fdh;
4033}
4034
8387904d
AM		 4035/* Hacks to support old ABI code.
4036 When making function calls, old ABI code references function entry
4037 points (dot symbols), while new ABI code references the function
4038 descriptor symbol. We need to make any combination of reference and
4039 definition work together, without breaking archive linking.
4040
4041 For a defined function "foo" and an undefined call to "bar":
4042 An old object defines "foo" and ".foo", references ".bar" (possibly
4043 "bar" too).
4044 A new object defines "foo" and references "bar".
4045
4046 A new object thus has no problem with its undefined symbols being
4047 satisfied by definitions in an old object. On the other hand, the
4048 old object won't have ".bar" satisfied by a new object. */
4049
4050/* Fix function descriptor symbols defined in .opd sections to be
4051 function type. */
555cd476
AM		 4052
4053static bfd_boolean
433817dd 4054ppc64_elf_add_symbol_hook (bfd *ibfd,
555cd476
AM		 4055 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4056 Elf_Internal_Sym *isym,
433817dd 4057 const char **name,
555cd476
AM		 4058 flagword *flags ATTRIBUTE_UNUSED,
4059 asection **sec,
4060 bfd_vma *value ATTRIBUTE_UNUSED)
4061{
8843416a
AM		 4062 if (*sec != NULL
4063 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4064 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd
AM		 4065
4066 if ((*name)[0] == '.'
4067 && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
4068 && ELF_ST_TYPE (isym->st_info) < STT_SECTION
4069 && is_ppc64_elf_target (ibfd->xvec))
4070 ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
4071
555cd476
AM		 4072 return TRUE;
4073}
4074
8387904d 4075/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4076 inclusion of a new ABI object archive that defines "bar".
4077 NAME is a symbol defined in an archive. Return a symbol in the hash
4078 table that might be satisfied by the archive symbols. */
8387904d
AM		 4079
4080static struct elf_link_hash_entry *
4081ppc64_elf_archive_symbol_lookup (bfd *abfd,
4082 struct bfd_link_info *info,
4083 const char *name)
4084{
4085 struct elf_link_hash_entry *h;
4086 char *dot_name;
4087 size_t len;
4088
4089 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4090 if (h != NULL
4091 /* Don't return this sym if it is a fake function descriptor
4092 created by add_symbol_adjust. */
4093 && !(h->root.type == bfd_link_hash_undefweak
4094 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4095 return h;
4096
4097 if (name[0] == '.')
4098 return h;
4099
4100 len = strlen (name);
4101 dot_name = bfd_alloc (abfd, len + 2);
4102 if (dot_name == NULL)
4103 return (struct elf_link_hash_entry *) 0 - 1;
4104 dot_name[0] = '.';
4105 memcpy (dot_name + 1, name, len + 1);
4106 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4107 bfd_release (abfd, dot_name);
4108 return h;
4109}
4110
4111/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4112 new ABI object defines "bar". Well, at least, undefined dot symbols
4113 are made weak. This stops later archive searches from including an
4114 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4115 prevents the linker complaining about undefined symbols.
4116 We also check and correct mismatched symbol visibility here. The
4117 most restrictive visibility of the function descriptor and the
4118 function entry symbol is used. */
8387904d 4119
bb700d78
AM		 4120struct add_symbol_adjust_data
4121{
4122 struct bfd_link_info *info;
4123 bfd_boolean ok;
4124};
4125
8387904d
AM		 4126static bfd_boolean
4127add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4128{
bb700d78 4129 struct add_symbol_adjust_data *data;
8387904d 4130 struct ppc_link_hash_table *htab;
99877b66 4131 struct ppc_link_hash_entry *eh;
8387904d
AM		 4132 struct ppc_link_hash_entry *fdh;
4133
4134 if (h->root.type == bfd_link_hash_indirect)
4135 return TRUE;
4136
4137 if (h->root.type == bfd_link_hash_warning)
4138 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4139
35b0ce59 4140 if (h->root.root.string[0] != '.')
8387904d
AM		 4141 return TRUE;
4142
bb700d78
AM		 4143 data = inf;
4144 htab = ppc_hash_table (data->info);
99877b66
AM		 4145 eh = (struct ppc_link_hash_entry *) h;
4146 fdh = get_fdh (eh, htab);
bb700d78 4147 if (fdh == NULL
c4f68ce3 4148 && !data->info->relocatable
bb700d78
AM		 4149 && (eh->elf.root.type == bfd_link_hash_undefined
4150 || eh->elf.root.type == bfd_link_hash_undefweak)
4151 && eh->elf.ref_regular)
4152 {
4153 /* Make an undefweak function descriptor sym, which is enough to
4154 pull in an --as-needed shared lib, but won't cause link
4155 errors. Archives are handled elsewhere. */
908b32fc 4156 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4157 if (fdh == NULL)
4158 data->ok = FALSE;
4159 else
4160 fdh->elf.ref_regular = 1;
4161 }
e87d886e 4162 else if (fdh != NULL)
8387904d 4163 {
35b0ce59
AM		 4164 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4165 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4166 if (entry_vis < descr_vis)
4167 fdh->elf.other += entry_vis - descr_vis;
4168 else if (entry_vis > descr_vis)
4169 eh->elf.other += descr_vis - entry_vis;
4170
e87d886e
AM		 4171 if ((fdh->elf.root.type == bfd_link_hash_defined
4172 || fdh->elf.root.type == bfd_link_hash_defweak)
4173 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4174 {
4175 eh->elf.root.type = bfd_link_hash_undefweak;
4176 eh->was_undefined = 1;
4177 htab->twiddled_syms = 1;
4178 }
8387904d 4179 }
99877b66 4180
8387904d
AM		 4181 return TRUE;
4182}
4183
4184static bfd_boolean
433817dd 4185ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
8387904d 4186{
99877b66 4187 struct ppc_link_hash_table *htab;
bb700d78 4188 struct add_symbol_adjust_data data;
99877b66 4189
433817dd
AM		 4190 if (!is_ppc64_elf_target (abfd->xvec))
4191 return TRUE;
4192
4193 if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
4194 return TRUE;
4195 ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
4196
99877b66 4197 htab = ppc_hash_table (info);
ee75fd95 4198 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4199 return TRUE;
4200
bb700d78
AM		 4201 data.info = info;
4202 data.ok = TRUE;
4203 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4204
4205 /* We need to fix the undefs list for any syms we have twiddled to
4206 undef_weak. */
4207 if (htab->twiddled_syms)
4208 {
77cfaee6 4209 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4210 htab->twiddled_syms = 0;
4211 }
bb700d78 4212 return data.ok;
8387904d
AM		 4213}
4214
411e1bfb 4215static bfd_boolean
4ce794b7
AM		 4216update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4217 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4218{
4219 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4220 char *local_got_tls_masks;
411e1bfb
AM		 4221
4222 if (local_got_ents == NULL)
4223 {
4224 bfd_size_type size = symtab_hdr->sh_info;
4225
e7b938ca 4226 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4227 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4228 if (local_got_ents == NULL)
4229 return FALSE;
4230 elf_local_got_ents (abfd) = local_got_ents;
4231 }
4232
4233 if ((tls_type & TLS_EXPLICIT) == 0)
4234 {
4235 struct got_entry *ent;
4236
4237 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4238 if (ent->addend == r_addend
4239 && ent->owner == abfd
4240 && ent->tls_type == tls_type)
411e1bfb
AM		 4241 break;
4242 if (ent == NULL)
4243 {
4244 bfd_size_type amt = sizeof (*ent);
4ce794b7 4245 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4246 if (ent == NULL)
4247 return FALSE;
4248 ent->next = local_got_ents[r_symndx];
4249 ent->addend = r_addend;
e717da7e 4250 ent->owner = abfd;
411e1bfb
AM		 4251 ent->tls_type = tls_type;
4252 ent->got.refcount = 0;
4253 local_got_ents[r_symndx] = ent;
4254 }
4255 ent->got.refcount += 1;
4256 }
4257
e7b938ca
AM		 4258 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4259 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4260 return TRUE;
65f38f15
AM		 4261}
4262
411e1bfb 4263static bfd_boolean
4ce794b7 4264update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4265{
411e1bfb 4266 struct plt_entry *ent;
1e2f5b6e 4267
411e1bfb
AM		 4268 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4269 if (ent->addend == addend)
4270 break;
4271 if (ent == NULL)
1e2f5b6e 4272 {
411e1bfb 4273 bfd_size_type amt = sizeof (*ent);
4ce794b7 4274 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4275 if (ent == NULL)
4276 return FALSE;
4277 ent->next = eh->elf.plt.plist;
4278 ent->addend = addend;
4279 ent->plt.refcount = 0;
4280 eh->elf.plt.plist = ent;
1e2f5b6e 4281 }
411e1bfb 4282 ent->plt.refcount += 1;
f5385ebf 4283 eh->elf.needs_plt = 1;
93f3fa99
AM		 4284 if (eh->elf.root.root.string[0] == '.'
4285 && eh->elf.root.root.string[1] != '\0')
4286 eh->is_func = 1;
b34976b6 4287 return TRUE;
1e2f5b6e
AM		 4288}
4289
5bd4f169 4290/* Look through the relocs for a section during the first phase, and
65f38f15 4291 calculate needed space in the global offset table, procedure
5d1634d7 4292 linkage table, and dynamic reloc sections. */
5bd4f169 4293
b34976b6 4294static bfd_boolean
4ce794b7
AM		 4295ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4296 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4297{
65f38f15 4298 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4299 Elf_Internal_Shdr *symtab_hdr;
4300 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4301 const Elf_Internal_Rela *rel;
4302 const Elf_Internal_Rela *rel_end;
5bd4f169 4303 asection *sreloc;
1e2f5b6e 4304 asection **opd_sym_map;
5bd4f169 4305
1049f94e 4306 if (info->relocatable)
b34976b6 4307 return TRUE;
5bd4f169 4308
680a3378
AM		 4309 /* Don't do anything special with non-loaded, non-alloced sections.
4310 In particular, any relocs in such sections should not affect GOT
4311 and PLT reference counting (ie. we don't allow them to create GOT
4312 or PLT entries), there's no possibility or desire to optimize TLS
4313 relocs, and there's not much point in propagating relocs to shared
4314 libs that the dynamic linker won't relocate. */
4315 if ((sec->flags & SEC_ALLOC) == 0)
4316 return TRUE;
4317
65f38f15 4318 htab = ppc_hash_table (info);
5bd4f169 4319 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4320
4321 sym_hashes = elf_sym_hashes (abfd);
4322 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4323 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4324 - symtab_hdr->sh_info);
5bd4f169
AM		 4325
4326 sreloc = NULL;
1e2f5b6e
AM		 4327 opd_sym_map = NULL;
4328 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4329 {
4330 /* Garbage collection needs some extra help with .opd sections.
4331 We don't want to necessarily keep everything referenced by
4332 relocs in .opd, as that would keep all functions. Instead,
4333 if we reference an .opd symbol (a function descriptor), we
4334 want to keep the function code symbol's section. This is
4335 easy for global symbols, but for local syms we need to keep
4336 information about the associated function section. Later, if
4337 edit_opd deletes entries, we'll use this array to adjust
4338 local syms in .opd. */
4339 union opd_info {
4340 asection *func_section;
4341 long entry_adjust;
4342 };
4343 bfd_size_type amt;
4344
3f764659 4345 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4346 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4347 if (opd_sym_map == NULL)
b34976b6 4348 return FALSE;
f0abc2a1 4349 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4350 }
5bd4f169 4351
82bd7b59
AM		 4352 if (htab->sfpr == NULL
4353 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4354 return FALSE;
82bd7b59 4355
5bd4f169
AM		 4356 rel_end = relocs + sec->reloc_count;
4357 for (rel = relocs; rel < rel_end; rel++)
4358 {
4359 unsigned long r_symndx;
4360 struct elf_link_hash_entry *h;
04c9666a 4361 enum elf_ppc64_reloc_type r_type;
411e1bfb 4362 int tls_type = 0;
5bd4f169
AM		 4363
4364 r_symndx = ELF64_R_SYM (rel->r_info);
4365 if (r_symndx < symtab_hdr->sh_info)
4366 h = NULL;
4367 else
4368 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4369
4ce794b7 4370 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4371 switch (r_type)
5bd4f169 4372 {
411e1bfb
AM		 4373 case R_PPC64_GOT_TLSLD16:
4374 case R_PPC64_GOT_TLSLD16_LO:
4375 case R_PPC64_GOT_TLSLD16_HI:
4376 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4377 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4378 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4379 goto dogottls;
4380
4381 case R_PPC64_GOT_TLSGD16:
4382 case R_PPC64_GOT_TLSGD16_LO:
4383 case R_PPC64_GOT_TLSGD16_HI:
4384 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4385 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4386 goto dogottls;
4387
4388 case R_PPC64_GOT_TPREL16_DS:
4389 case R_PPC64_GOT_TPREL16_LO_DS:
4390 case R_PPC64_GOT_TPREL16_HI:
4391 case R_PPC64_GOT_TPREL16_HA:
4392 if (info->shared)
4393 info->flags |= DF_STATIC_TLS;
4394 tls_type = TLS_TLS | TLS_TPREL;
4395 goto dogottls;
4396
4397 case R_PPC64_GOT_DTPREL16_DS:
4398 case R_PPC64_GOT_DTPREL16_LO_DS:
4399 case R_PPC64_GOT_DTPREL16_HI:
4400 case R_PPC64_GOT_DTPREL16_HA:
4401 tls_type = TLS_TLS | TLS_DTPREL;
4402 dogottls:
4403 sec->has_tls_reloc = 1;
4404 /* Fall thru */
4405
5bd4f169 4406 case R_PPC64_GOT16:
5bd4f169 4407 case R_PPC64_GOT16_DS:
65f38f15
AM		 4408 case R_PPC64_GOT16_HA:
4409 case R_PPC64_GOT16_HI:
4410 case R_PPC64_GOT16_LO:
5bd4f169 4411 case R_PPC64_GOT16_LO_DS:
65f38f15 4412 /* This symbol requires a global offset table entry. */
4c52953f 4413 sec->has_toc_reloc = 1;
e717da7e
AM		 4414 if (ppc64_elf_tdata (abfd)->got == NULL
4415 && !create_got_section (abfd, info))
b34976b6 4416 return FALSE;
5bd4f169
AM		 4417
4418 if (h != NULL)
4419 {
411e1bfb
AM		 4420 struct ppc_link_hash_entry *eh;
4421 struct got_entry *ent;
65f38f15 4422
411e1bfb
AM		 4423 eh = (struct ppc_link_hash_entry *) h;
4424 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4425 if (ent->addend == rel->r_addend
e717da7e 4426 && ent->owner == abfd
411e1bfb
AM		 4427 && ent->tls_type == tls_type)
4428 break;
4429 if (ent == NULL)
5bd4f169 4430 {
411e1bfb 4431 bfd_size_type amt = sizeof (*ent);
4ce794b7 4432 ent = bfd_alloc (abfd, amt);
411e1bfb 4433 if (ent == NULL)
b34976b6 4434 return FALSE;
411e1bfb
AM		 4435 ent->next = eh->elf.got.glist;
4436 ent->addend = rel->r_addend;
e717da7e 4437 ent->owner = abfd;
411e1bfb
AM		 4438 ent->tls_type = tls_type;
4439 ent->got.refcount = 0;
4440 eh->elf.got.glist = ent;
5bd4f169 4441 }
411e1bfb 4442 ent->got.refcount += 1;
e7b938ca 4443 eh->tls_mask |= tls_type;
5bd4f169 4444 }
411e1bfb
AM		 4445 else
4446 /* This is a global offset table entry for a local symbol. */
4447 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4448 rel->r_addend, tls_type))
4449 return FALSE;
5bd4f169
AM		 4450 break;
4451
5bd4f169 4452 case R_PPC64_PLT16_HA:
65f38f15
AM		 4453 case R_PPC64_PLT16_HI:
4454 case R_PPC64_PLT16_LO:
4455 case R_PPC64_PLT32:
4456 case R_PPC64_PLT64:
5bd4f169 4457 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4458 actually build the entry in adjust_dynamic_symbol,
4459 because this might be a case of linking PIC code without
4460 linking in any dynamic objects, in which case we don't
4461 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4462 if (h == NULL)
4463 {
4464 /* It does not make sense to have a procedure linkage
3fad3c7c 4465 table entry for a local symbol. */
5bd4f169 4466 bfd_set_error (bfd_error_bad_value);
b34976b6 4467 return FALSE;
5bd4f169 4468 }
411e1bfb
AM		 4469 else
4470 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4471 rel->r_addend))
4472 return FALSE;
5bd4f169
AM		 4473 break;
4474
4475 /* The following relocations don't need to propagate the
4476 relocation if linking a shared object since they are
4477 section relative. */
4478 case R_PPC64_SECTOFF:
4479 case R_PPC64_SECTOFF_LO:
4480 case R_PPC64_SECTOFF_HI:
4481 case R_PPC64_SECTOFF_HA:
4482 case R_PPC64_SECTOFF_DS:
4483 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4484 case R_PPC64_DTPREL16:
4485 case R_PPC64_DTPREL16_LO:
4486 case R_PPC64_DTPREL16_HI:
4487 case R_PPC64_DTPREL16_HA:
4488 case R_PPC64_DTPREL16_DS:
4489 case R_PPC64_DTPREL16_LO_DS:
4490 case R_PPC64_DTPREL16_HIGHER:
4491 case R_PPC64_DTPREL16_HIGHERA:
4492 case R_PPC64_DTPREL16_HIGHEST:
4493 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4494 break;
4495
ad8e1ba5
AM		 4496 /* Nor do these. */
4497 case R_PPC64_TOC16:
4498 case R_PPC64_TOC16_LO:
4499 case R_PPC64_TOC16_HI:
4500 case R_PPC64_TOC16_HA:
4501 case R_PPC64_TOC16_DS:
4502 case R_PPC64_TOC16_LO_DS:
4c52953f 4503 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4504 break;
4505
5bd4f169
AM		 4506 /* This relocation describes the C++ object vtable hierarchy.
4507 Reconstruct it for later use during GC. */
4508 case R_PPC64_GNU_VTINHERIT:
c152c796 4509 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4510 return FALSE;
5bd4f169
AM		 4511 break;
4512
4513 /* This relocation describes which C++ vtable entries are actually
4514 used. Record for later use during GC. */
4515 case R_PPC64_GNU_VTENTRY:
c152c796 4516 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4517 return FALSE;
5bd4f169
AM		 4518 break;
4519
721956f4
AM		 4520 case R_PPC64_REL14:
4521 case R_PPC64_REL14_BRTAKEN:
4522 case R_PPC64_REL14_BRNTAKEN:
4523 htab->has_14bit_branch = 1;
4524 /* Fall through. */
4525
5d1634d7 4526 case R_PPC64_REL24:
8387904d 4527 if (h != NULL)
5d1634d7
AM		 4528 {
4529 /* We may need a .plt entry if the function this reloc
4530 refers to is in a shared lib. */
411e1bfb
AM		 4531 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4532 rel->r_addend))
4533 return FALSE;
8387904d
AM		 4534 if (h == &htab->tls_get_addr->elf
4535 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4536 sec->has_tls_reloc = 1;
8387904d
AM		 4537 else if (htab->tls_get_addr == NULL
4538 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4539 && (h->root.root.string[15] == 0
4540 || h->root.root.string[15] == '@'))
411e1bfb 4541 {
8387904d
AM		 4542 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4543 sec->has_tls_reloc = 1;
4544 }
4545 else if (htab->tls_get_addr_fd == NULL
4546 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4547 && (h->root.root.string[14] == 0
4548 || h->root.root.string[14] == '@'))
4549 {
4550 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4551 sec->has_tls_reloc = 1;
4552 }
4553 }
4554 break;
4555
4556 case R_PPC64_TPREL64:
4557 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4558 if (info->shared)
4559 info->flags |= DF_STATIC_TLS;
4560 goto dotlstoc;
4561
4562 case R_PPC64_DTPMOD64:
4563 if (rel + 1 < rel_end
4564 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4565 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4566 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4567 else
951fd09b 4568 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4569 goto dotlstoc;
4570
4571 case R_PPC64_DTPREL64:
4572 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4573 if (rel != relocs
4574 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4575 && rel[-1].r_offset == rel->r_offset - 8)
4576 /* This is the second reloc of a dtpmod, dtprel pair.
4577 Don't mark with TLS_DTPREL. */
4578 goto dodyn;
4579
4580 dotlstoc:
4581 sec->has_tls_reloc = 1;
4582 if (h != NULL)
4583 {
4584 struct ppc_link_hash_entry *eh;
4585 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4586 eh->tls_mask |= tls_type;
411e1bfb
AM		 4587 }
4588 else
4589 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4590 rel->r_addend, tls_type))
4591 return FALSE;
4592
4593 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4594 {
e7b938ca 4595 /* One extra to simplify get_tls_mask. */
eea6121a 4596 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4597 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4598 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4599 return FALSE;
4600 }
4601 BFD_ASSERT (rel->r_offset % 8 == 0);
4602 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4603
4604 /* Mark the second slot of a GD or LD entry.
4605 -1 to indicate GD and -2 to indicate LD. */
4606 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4607 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4608 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4609 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4610 goto dodyn;
4611
4612 case R_PPC64_TPREL16:
4613 case R_PPC64_TPREL16_LO:
4614 case R_PPC64_TPREL16_HI:
4615 case R_PPC64_TPREL16_HA:
4616 case R_PPC64_TPREL16_DS:
4617 case R_PPC64_TPREL16_LO_DS:
4618 case R_PPC64_TPREL16_HIGHER:
4619 case R_PPC64_TPREL16_HIGHERA:
4620 case R_PPC64_TPREL16_HIGHEST:
4621 case R_PPC64_TPREL16_HIGHESTA:
4622 if (info->shared)
4623 {
4624 info->flags |= DF_STATIC_TLS;
4625 goto dodyn;
5d1634d7
AM		 4626 }
4627 break;
4628
e86ce104 4629 case R_PPC64_ADDR64:
1e2f5b6e 4630 if (opd_sym_map != NULL
1e2f5b6e 4631 && rel + 1 < rel_end
4ce794b7 4632 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4633 {
8387904d
AM		 4634 if (h != NULL)
4635 {
4636 if (h->root.root.string[0] == '.'
4637 && h->root.root.string[1] != 0
4638 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4639 ;
4640 else
4641 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4642 }
4643 else
4644 {
4645 asection *s;
1e2f5b6e 4646
8387904d
AM		 4647 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4648 r_symndx);
4649 if (s == NULL)
4650 return FALSE;
4651 else if (s != sec)
3f764659 4652 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4653 }
1e2f5b6e 4654 }
e86ce104
AM		 4655 /* Fall through. */
4656
04c9666a 4657 case R_PPC64_REL30:
5bd4f169 4658 case R_PPC64_REL32:
04c9666a 4659 case R_PPC64_REL64:
65f38f15
AM		 4660 case R_PPC64_ADDR14:
4661 case R_PPC64_ADDR14_BRNTAKEN:
4662 case R_PPC64_ADDR14_BRTAKEN:
4663 case R_PPC64_ADDR16:
4664 case R_PPC64_ADDR16_DS:
4665 case R_PPC64_ADDR16_HA:
4666 case R_PPC64_ADDR16_HI:
4667 case R_PPC64_ADDR16_HIGHER:
4668 case R_PPC64_ADDR16_HIGHERA:
4669 case R_PPC64_ADDR16_HIGHEST:
4670 case R_PPC64_ADDR16_HIGHESTA:
4671 case R_PPC64_ADDR16_LO:
4672 case R_PPC64_ADDR16_LO_DS:
4673 case R_PPC64_ADDR24:
65f38f15 4674 case R_PPC64_ADDR32:
65f38f15
AM		 4675 case R_PPC64_UADDR16:
4676 case R_PPC64_UADDR32:
4677 case R_PPC64_UADDR64:
5bd4f169 4678 case R_PPC64_TOC:
81848ca0
AM		 4679 if (h != NULL && !info->shared)
4680 /* We may need a copy reloc. */
f5385ebf 4681 h->non_got_ref = 1;
81848ca0 4682
41bd81ab 4683 /* Don't propagate .opd relocs. */
1e2f5b6e 4684 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4685 break;
e86ce104 4686
65f38f15
AM		 4687 /* If we are creating a shared library, and this is a reloc
4688 against a global symbol, or a non PC relative reloc
4689 against a local symbol, then we need to copy the reloc
4690 into the shared library. However, if we are linking with
4691 -Bsymbolic, we do not need to copy a reloc against a
4692 global symbol which is defined in an object we are
4693 including in the link (i.e., DEF_REGULAR is set). At
4694 this point we have not seen all the input files, so it is
4695 possible that DEF_REGULAR is not set now but will be set
4696 later (it is never cleared). In case of a weak definition,
4697 DEF_REGULAR may be cleared later by a strong definition in
4698 a shared library. We account for that possibility below by
f4656909 4699 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4700 table entry. A similar situation occurs when creating
4701 shared libraries and symbol visibility changes render the
4702 symbol local.
4703
4704 If on the other hand, we are creating an executable, we
4705 may need to keep relocations for symbols satisfied by a
4706 dynamic library if we manage to avoid copy relocs for the
4707 symbol. */
411e1bfb 4708 dodyn:
65f38f15 4709 if ((info->shared
411e1bfb 4710 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4711 || (h != NULL
4712 && (! info->symbolic
4713 || h->root.type == bfd_link_hash_defweak
f5385ebf 4714 || !h->def_regular))))
f4656909
AM		 4715 || (ELIMINATE_COPY_RELOCS
4716 && !info->shared
65f38f15
AM		 4717 && h != NULL
4718 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4719 || !h->def_regular)))
5bd4f169 4720 {
ec338859
AM		 4721 struct ppc_dyn_relocs *p;
4722 struct ppc_dyn_relocs **head;
4723
65f38f15
AM		 4724 /* We must copy these reloc types into the output file.
4725 Create a reloc section in dynobj and make room for
4726 this reloc. */
5bd4f169
AM		 4727 if (sreloc == NULL)
4728 {
4729 const char *name;
65f38f15 4730 bfd *dynobj;
5bd4f169
AM		 4731
4732 name = (bfd_elf_string_from_elf_section
4733 (abfd,
4734 elf_elfheader (abfd)->e_shstrndx,
4735 elf_section_data (sec)->rel_hdr.sh_name));
4736 if (name == NULL)
b34976b6 4737 return FALSE;
5bd4f169 4738
65f38f15
AM		 4739 if (strncmp (name, ".rela", 5) != 0
4740 || strcmp (bfd_get_section_name (abfd, sec),
4741 name + 5) != 0)
4742 {
4743 (*_bfd_error_handler)
d003868e
AM		 4744 (_("%B: bad relocation section name `%s\'"),
4745 abfd, name);
5d1634d7 4746 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4747 }
4748
65f38f15 4749 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4750 sreloc = bfd_get_section_by_name (dynobj, name);
4751 if (sreloc == NULL)
4752 {
4753 flagword flags;
4754
5bd4f169 4755 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4756 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4757 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 4758 sreloc = bfd_make_section_with_flags (dynobj,
4759 name,
4760 flags);
5bd4f169 4761 if (sreloc == NULL
65f38f15 4762 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4763 return FALSE;
5bd4f169 4764 }
65f38f15 4765 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4766 }
4767
65f38f15
AM		 4768 /* If this is a global symbol, we count the number of
4769 relocations we need for this symbol. */
4770 if (h != NULL)
4771 {
ec338859 4772 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4773 }
4774 else
4775 {
ec338859
AM		 4776 /* Track dynamic relocs needed for local syms too.
4777 We really need local syms available to do this
4778 easily. Oh well. */
4779
4780 asection *s;
4781 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4782 sec, r_symndx);
4783 if (s == NULL)
b34976b6 4784 return FALSE;
ec338859
AM		 4785
4786 head = ((struct ppc_dyn_relocs **)
4787 &elf_section_data (s)->local_dynrel);
65f38f15 4788 }
ec338859
AM		 4789
4790 p = *head;
4791 if (p == NULL || p->sec != sec)
4792 {
4ce794b7 4793 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4794 if (p == NULL)
b34976b6 4795 return FALSE;
ec338859
AM		 4796 p->next = *head;
4797 *head = p;
4798 p->sec = sec;
4799 p->count = 0;
4800 p->pc_count = 0;
4801 }
4802
4803 p->count += 1;
411e1bfb 4804 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4805 p->pc_count += 1;
65f38f15 4806 }
5bd4f169 4807 break;
65f38f15
AM		 4808
4809 default:
96e0dda4 4810 break;
5bd4f169
AM		 4811 }
4812 }
4813
b34976b6 4814 return TRUE;
5bd4f169
AM		 4815}
4816
8387904d
AM		 4817/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4818 of the code entry point, and its section. */
4819
4820static bfd_vma
4821opd_entry_value (asection *opd_sec,
4822 bfd_vma offset,
4823 asection **code_sec,
4824 bfd_vma *code_off)
4825{
4826 bfd *opd_bfd = opd_sec->owner;
8860955f 4827 Elf_Internal_Rela *relocs;
8387904d 4828 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4829 bfd_vma val;
8387904d 4830
4b85d634
AM		 4831 /* No relocs implies we are linking a --just-symbols object. */
4832 if (opd_sec->reloc_count == 0)
4833 {
4834 bfd_vma val;
4835
4836 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4837 return (bfd_vma) -1;
3b36f7e6 4838
4b85d634
AM		 4839 if (code_sec != NULL)
4840 {
4841 asection *sec, *likely = NULL;
4842 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4843 if (sec->vma <= val
4844 && (sec->flags & SEC_LOAD) != 0
4845 && (sec->flags & SEC_ALLOC) != 0)
4846 likely = sec;
4847 if (likely != NULL)
4848 {
4849 *code_sec = likely;
4850 if (code_off != NULL)
4851 *code_off = val - likely->vma;
4852 }
4853 }
4854 return val;
4855 }
4856
8860955f
AM		 4857 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4858 if (relocs == NULL)
4859 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4860
8387904d 4861 /* Go find the opd reloc at the sym address. */
8860955f 4862 lo = relocs;
8387904d
AM		 4863 BFD_ASSERT (lo != NULL);
4864 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4865 val = (bfd_vma) -1;
8387904d
AM		 4866 while (lo < hi)
4867 {
4868 look = lo + (hi - lo) / 2;
4869 if (look->r_offset < offset)
4870 lo = look + 1;
4871 else if (look->r_offset > offset)
4872 hi = look;
4873 else
4874 {
4875 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4876 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4877 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4878 {
4879 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4880 asection *sec;
4881
4882 if (symndx < symtab_hdr->sh_info)
4883 {
4884 Elf_Internal_Sym *sym;
4885
4886 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4887 if (sym == NULL)
4888 {
4889 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4890 symtab_hdr->sh_info,
4891 0, NULL, NULL, NULL);
4892 if (sym == NULL)
645ea6a9 4893 break;
8387904d
AM		 4894 symtab_hdr->contents = (bfd_byte *) sym;
4895 }
4896
4897 sym += symndx;
4898 val = sym->st_value;
4899 sec = NULL;
4900 if ((sym->st_shndx != SHN_UNDEF
4901 && sym->st_shndx < SHN_LORESERVE)
4902 || sym->st_shndx > SHN_HIRESERVE)
4903 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4904 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4905 }
4906 else
4907 {
4908 struct elf_link_hash_entry **sym_hashes;
4909 struct elf_link_hash_entry *rh;
4910
4911 sym_hashes = elf_sym_hashes (opd_bfd);
4912 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4913 while (rh->root.type == bfd_link_hash_indirect
4914 || rh->root.type == bfd_link_hash_warning)
4915 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4916 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4917 || rh->root.type == bfd_link_hash_defweak);
4918 val = rh->root.u.def.value;
4919 sec = rh->root.u.def.section;
4920 }
4921 val += look->r_addend;
4922 if (code_off != NULL)
4923 *code_off = val;
4924 if (code_sec != NULL)
4925 *code_sec = sec;
4926 if (sec != NULL && sec->output_section != NULL)
4927 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4928 }
4929 break;
4930 }
4931 }
645ea6a9 4932
645ea6a9 4933 return val;
8387904d
AM		 4934}
4935
5bd4f169
AM		 4936/* Return the section that should be marked against GC for a given
4937 relocation. */
4938
4939static asection *
4ce794b7 4940ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4941 struct bfd_link_info *info,
4ce794b7
AM		 4942 Elf_Internal_Rela *rel,
4943 struct elf_link_hash_entry *h,
4944 Elf_Internal_Sym *sym)
5bd4f169 4945{
ccfa59ea
AM		 4946 asection *rsec;
4947
4948 /* First mark all our entry sym sections. */
4949 if (info->gc_sym_list != NULL)
4950 {
4951 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4952 struct bfd_sym_chain *sym = info->gc_sym_list;
4953
4954 info->gc_sym_list = NULL;
4955 do
4956 {
4957 struct ppc_link_hash_entry *eh;
4958
4959 eh = (struct ppc_link_hash_entry *)
4960 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4961 if (eh == NULL)
4962 continue;
4963 if (eh->elf.root.type != bfd_link_hash_defined
4964 && eh->elf.root.type != bfd_link_hash_defweak)
4965 continue;
4966
c4f68ce3
AM		 4967 if (eh->is_func_descriptor
4968 && (eh->oh->elf.root.type == bfd_link_hash_defined
4969 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4970 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4971 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4972 && opd_entry_value (eh->elf.root.u.def.section,
4973 eh->elf.root.u.def.value,
4974 &rsec, NULL) != (bfd_vma) -1)
4975 ;
ccfa59ea
AM		 4976 else
4977 continue;
4978
4979 if (!rsec->gc_mark)
4980 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4981
4982 rsec = eh->elf.root.u.def.section;
4983 if (!rsec->gc_mark)
4984 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4985
4986 sym = sym->next;
4987 }
4988 while (sym != NULL);
4989 }
4990
4991 /* Syms return NULL if we're marking .opd, so we avoid marking all
4992 function sections, as all functions are referenced in .opd. */
4993 rsec = NULL;
4994 if (get_opd_info (sec) != NULL)
4995 return rsec;
1e2f5b6e 4996
5bd4f169
AM		 4997 if (h != NULL)
4998 {
04c9666a 4999 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5000 struct ppc_link_hash_entry *eh;
a33d1f77 5001
4ce794b7 5002 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5003 switch (r_type)
5bd4f169
AM		 5004 {
5005 case R_PPC64_GNU_VTINHERIT:
5006 case R_PPC64_GNU_VTENTRY:
5007 break;
5008
5009 default:
5010 switch (h->root.type)
5011 {
5012 case bfd_link_hash_defined:
5013 case bfd_link_hash_defweak:
ccfa59ea 5014 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5015 if (eh->oh != NULL
5016 && eh->oh->is_func_descriptor
5017 && (eh->oh->elf.root.type == bfd_link_hash_defined
5018 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5019 eh = eh->oh;
1e2f5b6e
AM		 5020
5021 /* Function descriptor syms cause the associated
5022 function code sym section to be marked. */
c4f68ce3
AM		 5023 if (eh->is_func_descriptor
5024 && (eh->oh->elf.root.type == bfd_link_hash_defined
5025 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5026 {
5027 /* They also mark their opd section. */
5028 if (!eh->elf.root.u.def.section->gc_mark)
5029 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5030 ppc64_elf_gc_mark_hook);
5031
5032 rsec = eh->oh->elf.root.u.def.section;
5033 }
8387904d
AM		 5034 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5035 && opd_entry_value (eh->elf.root.u.def.section,
5036 eh->elf.root.u.def.value,
5037 &rsec, NULL) != (bfd_vma) -1)
5038 {
5039 if (!eh->elf.root.u.def.section->gc_mark)
5040 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5041 ppc64_elf_gc_mark_hook);
5042 }
ccfa59ea 5043 else
1e2f5b6e
AM		 5044 rsec = h->root.u.def.section;
5045 break;
5bd4f169
AM		 5046
5047 case bfd_link_hash_common:
1e2f5b6e
AM		 5048 rsec = h->root.u.c.p->section;
5049 break;
5bd4f169
AM		 5050
5051 default:
5052 break;
5053 }
5054 }
5055 }
5056 else
5057 {
1e2f5b6e
AM		 5058 asection **opd_sym_section;
5059
5060 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5061 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5062 if (opd_sym_section != NULL)
ccfa59ea
AM		 5063 {
5064 if (!rsec->gc_mark)
5065 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5066
b4f4e59f 5067 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5068 }
5bd4f169
AM		 5069 }
5070
1e2f5b6e 5071 return rsec;
5bd4f169
AM		 5072}
5073
65f38f15
AM		 5074/* Update the .got, .plt. and dynamic reloc reference counts for the
5075 section being removed. */
5bd4f169 5076
b34976b6 5077static bfd_boolean
4ce794b7
AM		 5078ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5079 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5080{
411e1bfb 5081 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5082 Elf_Internal_Shdr *symtab_hdr;
5083 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5084 struct got_entry **local_got_ents;
5bd4f169 5085 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5086
680a3378
AM		 5087 if ((sec->flags & SEC_ALLOC) == 0)
5088 return TRUE;
5089
ec338859
AM		 5090 elf_section_data (sec)->local_dynrel = NULL;
5091
411e1bfb 5092 htab = ppc_hash_table (info);
5bd4f169
AM		 5093 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5094 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5095 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5096
5097 relend = relocs + sec->reloc_count;
5098 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5099 {
5100 unsigned long r_symndx;
04c9666a 5101 enum elf_ppc64_reloc_type r_type;
58ac9f71 5102 struct elf_link_hash_entry *h = NULL;
411e1bfb 5103 char tls_type = 0;
5bd4f169 5104
a33d1f77 5105 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5106 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5107 if (r_symndx >= symtab_hdr->sh_info)
5108 {
5109 struct ppc_link_hash_entry *eh;
5110 struct ppc_dyn_relocs **pp;
5111 struct ppc_dyn_relocs *p;
5112
5113 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5114 while (h->root.type == bfd_link_hash_indirect
5115 || h->root.type == bfd_link_hash_warning)
5116 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5117 eh = (struct ppc_link_hash_entry *) h;
5118
5119 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5120 if (p->sec == sec)
5121 {
5122 /* Everything must go for SEC. */
5123 *pp = p->next;
5124 break;
5125 }
5126 }
5127
a33d1f77
AM		 5128 switch (r_type)
5129 {
411e1bfb
AM		 5130 case R_PPC64_GOT_TLSLD16:
5131 case R_PPC64_GOT_TLSLD16_LO:
5132 case R_PPC64_GOT_TLSLD16_HI:
5133 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5134 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5135 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5136 goto dogot;
5137
5138 case R_PPC64_GOT_TLSGD16:
5139 case R_PPC64_GOT_TLSGD16_LO:
5140 case R_PPC64_GOT_TLSGD16_HI:
5141 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5142 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5143 goto dogot;
5144
5145 case R_PPC64_GOT_TPREL16_DS:
5146 case R_PPC64_GOT_TPREL16_LO_DS:
5147 case R_PPC64_GOT_TPREL16_HI:
5148 case R_PPC64_GOT_TPREL16_HA:
5149 tls_type = TLS_TLS | TLS_TPREL;
5150 goto dogot;
5151
5152 case R_PPC64_GOT_DTPREL16_DS:
5153 case R_PPC64_GOT_DTPREL16_LO_DS:
5154 case R_PPC64_GOT_DTPREL16_HI:
5155 case R_PPC64_GOT_DTPREL16_HA:
5156 tls_type = TLS_TLS | TLS_DTPREL;
5157 goto dogot;
5158
a33d1f77
AM		 5159 case R_PPC64_GOT16:
5160 case R_PPC64_GOT16_DS:
5161 case R_PPC64_GOT16_HA:
5162 case R_PPC64_GOT16_HI:
5163 case R_PPC64_GOT16_LO:
5164 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5165 dogot:
5166 {
5167 struct got_entry *ent;
5168
58ac9f71
AM		 5169 if (h != NULL)
5170 ent = h->got.glist;
411e1bfb
AM		 5171 else
5172 ent = local_got_ents[r_symndx];
5173
5174 for (; ent != NULL; ent = ent->next)
5175 if (ent->addend == rel->r_addend
e717da7e 5176 && ent->owner == abfd
411e1bfb
AM		 5177 && ent->tls_type == tls_type)
5178 break;
5179 if (ent == NULL)
5180 abort ();
5181 if (ent->got.refcount > 0)
5182 ent->got.refcount -= 1;
5183 }
a33d1f77 5184 break;
65f38f15 5185
a33d1f77
AM		 5186 case R_PPC64_PLT16_HA:
5187 case R_PPC64_PLT16_HI:
5188 case R_PPC64_PLT16_LO:
5189 case R_PPC64_PLT32:
5190 case R_PPC64_PLT64:
721956f4
AM		 5191 case R_PPC64_REL14:
5192 case R_PPC64_REL14_BRNTAKEN:
5193 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5194 case R_PPC64_REL24:
58ac9f71 5195 if (h != NULL)
5d1634d7 5196 {
411e1bfb
AM		 5197 struct plt_entry *ent;
5198
411e1bfb
AM		 5199 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5200 if (ent->addend == rel->r_addend)
5201 break;
5202 if (ent == NULL)
5203 abort ();
5204 if (ent->plt.refcount > 0)
5205 ent->plt.refcount -= 1;
5d1634d7 5206 }
e86ce104 5207 break;
5d1634d7 5208
a33d1f77
AM		 5209 default:
5210 break;
5211 }
5212 }
b34976b6 5213 return TRUE;
5bd4f169
AM		 5214}
5215
deb0e272
AM		 5216/* The maximum size of .sfpr. */
5217#define SFPR_MAX (218*4)
5218
5219struct sfpr_def_parms
5220{
699733f6
AM		 5221 const char name[12];
5222 unsigned char lo, hi;
deb0e272
AM		 5223 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5224 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5225};
5226
5227/* Auto-generate _save*, _rest* functions in .sfpr. */
5228
5229static unsigned int
5230sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5231{
5232 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5233 unsigned int i;
5234 size_t len = strlen (parm->name);
5235 bfd_boolean writing = FALSE;
699733f6 5236 char sym[16];
deb0e272
AM		 5237
5238 memcpy (sym, parm->name, len);
5239 sym[len + 2] = 0;
5240
5241 for (i = parm->lo; i <= parm->hi; i++)
5242 {
5243 struct elf_link_hash_entry *h;
5244
5245 sym[len + 0] = i / 10 + '0';
5246 sym[len + 1] = i % 10 + '0';
5247 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5248 if (h != NULL
f5385ebf 5249 && !h->def_regular)
deb0e272
AM		 5250 {
5251 h->root.type = bfd_link_hash_defined;
5252 h->root.u.def.section = htab->sfpr;
5253 h->root.u.def.value = htab->sfpr->size;
5254 h->type = STT_FUNC;
f5385ebf 5255 h->def_regular = 1;
deb0e272
AM		 5256 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5257 writing = TRUE;
5258 if (htab->sfpr->contents == NULL)
5259 {
5260 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5261 if (htab->sfpr->contents == NULL)
5262 return FALSE;
5263 }
5264 }
5265 if (writing)
5266 {
5267 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5268 if (i != parm->hi)
5269 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5270 else
5271 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5272 htab->sfpr->size = p - htab->sfpr->contents;
5273 }
5274 }
5275
5276 return TRUE;
5277}
5278
5279static bfd_byte *
5280savegpr0 (bfd *abfd, bfd_byte *p, int r)
5281{
5282 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5283 return p + 4;
5284}
5285
5286static bfd_byte *
5287savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5288{
5289 p = savegpr0 (abfd, p, r);
5290 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5291 p = p + 4;
5292 bfd_put_32 (abfd, BLR, p);
5293 return p + 4;
5294}
5295
5296static bfd_byte *
5297restgpr0 (bfd *abfd, bfd_byte *p, int r)
5298{
5299 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5300 return p + 4;
5301}
5302
5303static bfd_byte *
5304restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5305{
5306 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5307 p = p + 4;
5308 p = restgpr0 (abfd, p, r);
5309 bfd_put_32 (abfd, MTLR_R0, p);
5310 p = p + 4;
5311 if (r == 29)
5312 {
5313 p = restgpr0 (abfd, p, 30);
5314 p = restgpr0 (abfd, p, 31);
5315 }
5316 bfd_put_32 (abfd, BLR, p);
5317 return p + 4;
5318}
5319
5320static bfd_byte *
5321savegpr1 (bfd *abfd, bfd_byte *p, int r)
5322{
5323 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5324 return p + 4;
5325}
5326
5327static bfd_byte *
5328savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5329{
5330 p = savegpr1 (abfd, p, r);
5331 bfd_put_32 (abfd, BLR, p);
5332 return p + 4;
5333}
5334
5335static bfd_byte *
5336restgpr1 (bfd *abfd, bfd_byte *p, int r)
5337{
5338 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5339 return p + 4;
5340}
5341
5342static bfd_byte *
5343restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5344{
5345 p = restgpr1 (abfd, p, r);
5346 bfd_put_32 (abfd, BLR, p);
5347 return p + 4;
5348}
5349
5350static bfd_byte *
5351savefpr (bfd *abfd, bfd_byte *p, int r)
5352{
5353 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5354 return p + 4;
5355}
5356
5357static bfd_byte *
5358savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5359{
5360 p = savefpr (abfd, p, r);
5361 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5362 p = p + 4;
5363 bfd_put_32 (abfd, BLR, p);
5364 return p + 4;
5365}
5366
5367static bfd_byte *
5368restfpr (bfd *abfd, bfd_byte *p, int r)
5369{
5370 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5371 return p + 4;
5372}
5373
5374static bfd_byte *
5375restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5376{
5377 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5378 p = p + 4;
5379 p = restfpr (abfd, p, r);
5380 bfd_put_32 (abfd, MTLR_R0, p);
5381 p = p + 4;
5382 if (r == 29)
5383 {
5384 p = restfpr (abfd, p, 30);
5385 p = restfpr (abfd, p, 31);
5386 }
5387 bfd_put_32 (abfd, BLR, p);
5388 return p + 4;
5389}
5390
5391static bfd_byte *
5392savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5393{
5394 p = savefpr (abfd, p, r);
5395 bfd_put_32 (abfd, BLR, p);
5396 return p + 4;
5397}
5398
5399static bfd_byte *
5400restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5401{
5402 p = restfpr (abfd, p, r);
5403 bfd_put_32 (abfd, BLR, p);
5404 return p + 4;
5405}
5406
5407static bfd_byte *
5408savevr (bfd *abfd, bfd_byte *p, int r)
5409{
5410 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5411 p = p + 4;
5412 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5413 return p + 4;
5414}
5415
5416static bfd_byte *
5417savevr_tail (bfd *abfd, bfd_byte *p, int r)
5418{
5419 p = savevr (abfd, p, r);
5420 bfd_put_32 (abfd, BLR, p);
5421 return p + 4;
5422}
5423
5424static bfd_byte *
5425restvr (bfd *abfd, bfd_byte *p, int r)
5426{
5427 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5428 p = p + 4;
5429 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5430 return p + 4;
5431}
5432
5433static bfd_byte *
5434restvr_tail (bfd *abfd, bfd_byte *p, int r)
5435{
5436 p = restvr (abfd, p, r);
5437 bfd_put_32 (abfd, BLR, p);
5438 return p + 4;
5439}
5440
e86ce104
AM		 5441/* Called via elf_link_hash_traverse to transfer dynamic linking
5442 information on function code symbol entries to their corresponding
5443 function descriptor symbol entries. */
deb0e272 5444
b34976b6 5445static bfd_boolean
4ce794b7 5446func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5447{
e86ce104 5448 struct bfd_link_info *info;
65f38f15 5449 struct ppc_link_hash_table *htab;
411e1bfb 5450 struct plt_entry *ent;
50bc7936
AM		 5451 struct ppc_link_hash_entry *fh;
5452 struct ppc_link_hash_entry *fdh;
5453 bfd_boolean force_local;
5bd4f169 5454
50bc7936
AM		 5455 fh = (struct ppc_link_hash_entry *) h;
5456 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5457 return TRUE;
e86ce104 5458
50bc7936
AM		 5459 if (fh->elf.root.type == bfd_link_hash_warning)
5460 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5461
4ce794b7 5462 info = inf;
65f38f15 5463 htab = ppc_hash_table (info);
5bd4f169 5464
c09bdfe5
AM		 5465 /* Resolve undefined references to dot-symbols as the value
5466 in the function descriptor, if we have one in a regular object.
5467 This is to satisfy cases like ".quad .foo". Calls to functions
5468 in dynamic objects are handled elsewhere. */
5469 if (fh->elf.root.type == bfd_link_hash_undefweak
5470 && fh->was_undefined
5471 && (fh->oh->elf.root.type == bfd_link_hash_defined
5472 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5473 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5474 && opd_entry_value (fh->oh->elf.root.u.def.section,
5475 fh->oh->elf.root.u.def.value,
5476 &fh->elf.root.u.def.section,
5477 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5478 {
5479 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5480 fh->elf.forced_local = 1;
c09bdfe5
AM		 5481 }
5482
e86ce104
AM		 5483 /* If this is a function code symbol, transfer dynamic linking
5484 information to the function descriptor symbol. */
50bc7936 5485 if (!fh->is_func)
b34976b6 5486 return TRUE;
e86ce104 5487
50bc7936 5488 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5489 if (ent->plt.refcount > 0)
5490 break;
50bc7936
AM		 5491 if (ent == NULL
5492 || fh->elf.root.root.string[0] != '.'
5493 || fh->elf.root.root.string[1] == '\0')
5494 return TRUE;
5bd4f169 5495
50bc7936
AM		 5496 /* Find the corresponding function descriptor symbol. Create it
5497 as undefined if necessary. */
5bd4f169 5498
50bc7936
AM		 5499 fdh = get_fdh (fh, htab);
5500 if (fdh != NULL)
5501 while (fdh->elf.root.type == bfd_link_hash_indirect
5502 || fdh->elf.root.type == bfd_link_hash_warning)
5503 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5504
50bc7936
AM		 5505 if (fdh == NULL
5506 && info->shared
5507 && (fh->elf.root.type == bfd_link_hash_undefined
5508 || fh->elf.root.type == bfd_link_hash_undefweak))
5509 {
908b32fc 5510 fdh = make_fdh (info, fh);
bb700d78
AM		 5511 if (fdh == NULL)
5512 return FALSE;
50bc7936 5513 }
648cca2c 5514
908b32fc 5515 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5516 code symbol is strong undefined, make the fake sym the same.
5517 If the function code symbol is defined, then force the fake
5518 descriptor local; We can't support overriding of symbols in a
5519 shared library on a fake descriptor. */
908b32fc
AM		 5520
5521 if (fdh != NULL
5522 && fdh->fake
433817dd 5523 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5524 {
433817dd
AM		 5525 if (fh->elf.root.type == bfd_link_hash_undefined)
5526 {
5527 fdh->elf.root.type = bfd_link_hash_undefined;
5528 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5529 }
5530 else if (fh->elf.root.type == bfd_link_hash_defined
5531 || fh->elf.root.type == bfd_link_hash_defweak)
5532 {
5533 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5534 }
908b32fc
AM		 5535 }
5536
50bc7936 5537 if (fdh != NULL
f5385ebf 5538 && !fdh->elf.forced_local
50bc7936 5539 && (info->shared
f5385ebf
AM		 5540 || fdh->elf.def_dynamic
5541 || fdh->elf.ref_dynamic
50bc7936
AM		 5542 || (fdh->elf.root.type == bfd_link_hash_undefweak
5543 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5544 {
5545 if (fdh->elf.dynindx == -1)
c152c796 5546 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5547 return FALSE;
f5385ebf
AM		 5548 fdh->elf.ref_regular |= fh->elf.ref_regular;
5549 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5550 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5551 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5552 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5553 {
40d16e0b 5554 move_plt_plist (fh, fdh);
f5385ebf 5555 fdh->elf.needs_plt = 1;
e86ce104 5556 }
50bc7936 5557 fdh->is_func_descriptor = 1;
34814b9f
AM		 5558 fdh->oh = fh;
5559 fh->oh = fdh;
e86ce104
AM		 5560 }
5561
50bc7936
AM		 5562 /* Now that the info is on the function descriptor, clear the
5563 function code sym info. Any function code syms for which we
5564 don't have a definition in a regular file, we force local.
5565 This prevents a shared library from exporting syms that have
5566 been imported from another library. Function code syms that
5567 are really in the library we must leave global to prevent the
5568 linker dragging in a definition from a static library. */
93f3fa99
AM		 5569 force_local = (!fh->elf.def_regular
5570 || fdh == NULL
5571 || !fdh->elf.def_regular
5572 || fdh->elf.forced_local);
50bc7936
AM		 5573 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5574
b34976b6 5575 return TRUE;
e86ce104 5576}
40b8271b 5577
e86ce104 5578/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5579 this hook to a) provide some gcc support functions, and b) transfer
5580 dynamic linking information gathered so far on function code symbol
5581 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5582
b34976b6 5583static bfd_boolean
4ce794b7
AM		 5584ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5585 struct bfd_link_info *info)
e86ce104
AM		 5586{
5587 struct ppc_link_hash_table *htab;
82bd7b59 5588 unsigned int i;
deb0e272
AM		 5589 const struct sfpr_def_parms funcs[] =
5590 {
5591 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5592 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5593 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5594 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5595 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5596 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5597 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5598 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5599 { "._savef", 14, 31, savefpr, savefpr1_tail },
5600 { "._restf", 14, 31, restfpr, restfpr1_tail },
5601 { "_savevr_", 20, 31, savevr, savevr_tail },
5602 { "_restvr_", 20, 31, restvr, restvr_tail }
5603 };
e86ce104
AM		 5604
5605 htab = ppc_hash_table (info);
82bd7b59
AM		 5606 if (htab->sfpr == NULL)
5607 /* We don't have any relocs. */
b34976b6 5608 return TRUE;
82bd7b59 5609
deb0e272
AM		 5610 /* Provide any missing _save* and _rest* functions. */
5611 htab->sfpr->size = 0;
5612 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5613 if (!sfpr_define (info, &funcs[i]))
5614 return FALSE;
82bd7b59 5615
4ce794b7 5616 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5617
eea6121a 5618 if (htab->sfpr->size == 0)
8423293d 5619 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5620
b34976b6 5621 return TRUE;
e86ce104
AM		 5622}
5623
5624/* Adjust a symbol defined by a dynamic object and referenced by a
5625 regular object. The current definition is in some section of the
5626 dynamic object, but we're not including those sections. We have to
5627 change the definition to something the rest of the link can
5628 understand. */
5629
b34976b6 5630static bfd_boolean
4ce794b7
AM		 5631ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5632 struct elf_link_hash_entry *h)
e86ce104
AM		 5633{
5634 struct ppc_link_hash_table *htab;
e86ce104
AM		 5635 asection *s;
5636 unsigned int power_of_two;
5637
5638 htab = ppc_hash_table (info);
5639
5640 /* Deal with function syms. */
5641 if (h->type == STT_FUNC
f5385ebf 5642 || h->needs_plt)
e86ce104
AM		 5643 {
5644 /* Clear procedure linkage table information for any symbol that
5645 won't need a .plt entry. */
411e1bfb
AM		 5646 struct plt_entry *ent;
5647 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5648 if (ent->plt.refcount > 0)
5649 break;
8387904d 5650 if (ent == NULL
9c7a29a3
AM		 5651 || SYMBOL_CALLS_LOCAL (info, h)
5652 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5653 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5654 {
411e1bfb 5655 h->plt.plist = NULL;
f5385ebf 5656 h->needs_plt = 0;
40b8271b 5657 }
5bd4f169 5658 }
bbd7ec4a 5659 else
411e1bfb 5660 h->plt.plist = NULL;
5bd4f169
AM		 5661
5662 /* If this is a weak symbol, and there is a real definition, the
5663 processor independent code will have arranged for us to see the
5664 real definition first, and we can just use the same value. */
f6e332e6 5665 if (h->u.weakdef != NULL)
5bd4f169 5666 {
f6e332e6
AM		 5667 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5668 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5669 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5670 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5671 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5672 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5673 return TRUE;
5bd4f169
AM		 5674 }
5675
5bd4f169
AM		 5676 /* If we are creating a shared library, we must presume that the
5677 only references to the symbol are via the global offset table.
5678 For such cases we need not do anything here; the relocations will
5679 be handled correctly by relocate_section. */
5680 if (info->shared)
b34976b6 5681 return TRUE;
5bd4f169 5682
65f38f15
AM		 5683 /* If there are no references to this symbol that do not use the
5684 GOT, we don't need to generate a copy reloc. */
f5385ebf 5685 if (!h->non_got_ref)
b34976b6 5686 return TRUE;
65f38f15 5687
f4656909 5688 if (ELIMINATE_COPY_RELOCS)
65f38f15 5689 {
f4656909
AM		 5690 struct ppc_link_hash_entry * eh;
5691 struct ppc_dyn_relocs *p;
65f38f15 5692
f4656909
AM		 5693 eh = (struct ppc_link_hash_entry *) h;
5694 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5695 {
5696 s = p->sec->output_section;
5697 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5698 break;
5699 }
5700
5701 /* If we didn't find any dynamic relocs in read-only sections, then
5702 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5703 if (p == NULL)
5704 {
f5385ebf 5705 h->non_got_ref = 0;
f4656909
AM		 5706 return TRUE;
5707 }
65f38f15
AM		 5708 }
5709
5d35169e 5710 if (h->plt.plist != NULL)
97b639ba
AM		 5711 {
5712 /* We should never get here, but unfortunately there are versions
5713 of gcc out there that improperly (for this ABI) put initialized
5714 function pointers, vtable refs and suchlike in read-only
5715 sections. Allow them to proceed, but warn that this might
5716 break at runtime. */
5717 (*_bfd_error_handler)
5718 (_("copy reloc against `%s' requires lazy plt linking; "
5719 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5720 h->root.root.string);
5721 }
5d35169e
AM		 5722
5723 /* This is a reference to a symbol defined by a dynamic object which
5724 is not a function. */
5725
5bd4f169
AM		 5726 /* We must allocate the symbol in our .dynbss section, which will
5727 become part of the .bss section of the executable. There will be
5728 an entry for this symbol in the .dynsym section. The dynamic
5729 object will contain position independent code, so all references
5730 from the dynamic object to this symbol will go through the global
5731 offset table. The dynamic linker will use the .dynsym entry to
5732 determine the address it must put in the global offset table, so
5733 both the dynamic object and the regular object will refer to the
5734 same memory location for the variable. */
5bd4f169 5735
04c9666a
AM		 5736 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5737 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5738 runtime process image. We need to remember the offset into the
5739 .rela.bss section we are going to use. */
5740 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5741 {
eea6121a 5742 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5743 h->needs_copy = 1;
5bd4f169
AM		 5744 }
5745
5746 /* We need to figure out the alignment required for this symbol. I
5747 have no idea how ELF linkers handle this. */
5748 power_of_two = bfd_log2 (h->size);
5749 if (power_of_two > 4)
5750 power_of_two = 4;
5751
5752 /* Apply the required alignment. */
4ce794b7 5753 s = htab->dynbss;
eea6121a 5754 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5755 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5756 {
65f38f15 5757 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5758 return FALSE;
5bd4f169
AM		 5759 }
5760
5761 /* Define the symbol as being at this point in the section. */
5762 h->root.u.def.section = s;
eea6121a 5763 h->root.u.def.value = s->size;
5bd4f169
AM		 5764
5765 /* Increment the section size to make room for the symbol. */
eea6121a 5766 s->size += h->size;
5bd4f169 5767
b34976b6 5768 return TRUE;
5bd4f169
AM		 5769}
5770
e86ce104
AM		 5771/* If given a function descriptor symbol, hide both the function code
5772 sym and the descriptor. */
5773static void
4ce794b7
AM		 5774ppc64_elf_hide_symbol (struct bfd_link_info *info,
5775 struct elf_link_hash_entry *h,
5776 bfd_boolean force_local)
e86ce104 5777{
34814b9f 5778 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5779 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5780
34814b9f
AM		 5781 eh = (struct ppc_link_hash_entry *) h;
5782 if (eh->is_func_descriptor)
e86ce104 5783 {
34814b9f 5784 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5785
721956f4 5786 if (fh == NULL)
d1329ca3
AM		 5787 {
5788 const char *p, *q;
5789 struct ppc_link_hash_table *htab;
5790 char save;
5791
5792 /* We aren't supposed to use alloca in BFD because on
5793 systems which do not have alloca the version in libiberty
5794 calls xmalloc, which might cause the program to crash
5795 when it runs out of memory. This function doesn't have a
5796 return status, so there's no way to gracefully return an
5797 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5798 accessed; It's either a string in an ELF string table,
5799 or allocated in an objalloc structure. */
d1329ca3 5800
34814b9f 5801 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5802 save = *p;
5803 *(char *) p = '.';
5804 htab = ppc_hash_table (info);
34814b9f
AM		 5805 fh = (struct ppc_link_hash_entry *)
5806 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5807 *(char *) p = save;
5808
5809 /* Unfortunately, if it so happens that the string we were
5810 looking for was allocated immediately before this string,
5811 then we overwrote the string terminator. That's the only
5812 reason the lookup should fail. */
5813 if (fh == NULL)
5814 {
34814b9f
AM		 5815 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5816 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5817 --q, --p;
34814b9f
AM		 5818 if (q < eh->elf.root.root.string && *p == '.')
5819 fh = (struct ppc_link_hash_entry *)
5820 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5821 }
5822 if (fh != NULL)
5823 {
34814b9f
AM		 5824 eh->oh = fh;
5825 fh->oh = eh;
d1329ca3
AM		 5826 }
5827 }
e86ce104 5828 if (fh != NULL)
34814b9f 5829 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5830 }
5831}
5832
411e1bfb 5833static bfd_boolean
8843416a
AM		 5834get_sym_h (struct elf_link_hash_entry **hp,
5835 Elf_Internal_Sym **symp,
5836 asection **symsecp,
5837 char **tls_maskp,
5838 Elf_Internal_Sym **locsymsp,
5839 unsigned long r_symndx,
5840 bfd *ibfd)
411e1bfb
AM		 5841{
5842 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5843
5844 if (r_symndx >= symtab_hdr->sh_info)
5845 {
5846 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5847 struct elf_link_hash_entry *h;
5848
5849 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5850 while (h->root.type == bfd_link_hash_indirect
5851 || h->root.type == bfd_link_hash_warning)
5852 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5853
5854 if (hp != NULL)
5855 *hp = h;
5856
5857 if (symp != NULL)
5858 *symp = NULL;
5859
5860 if (symsecp != NULL)
5861 {
5862 asection *symsec = NULL;
5863 if (h->root.type == bfd_link_hash_defined
5864 || h->root.type == bfd_link_hash_defweak)
5865 symsec = h->root.u.def.section;
5866 *symsecp = symsec;
5867 }
5868
e7b938ca 5869 if (tls_maskp != NULL)
411e1bfb
AM		 5870 {
5871 struct ppc_link_hash_entry *eh;
5872
5873 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5874 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5875 }
5876 }
5877 else
5878 {
5879 Elf_Internal_Sym *sym;
5880 Elf_Internal_Sym *locsyms = *locsymsp;
5881
5882 if (locsyms == NULL)
5883 {
5884 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5885 if (locsyms == NULL)
5886 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5887 symtab_hdr->sh_info,
5888 0, NULL, NULL, NULL);
5889 if (locsyms == NULL)
5890 return FALSE;
5891 *locsymsp = locsyms;
5892 }
5893 sym = locsyms + r_symndx;
5894
5895 if (hp != NULL)
5896 *hp = NULL;
5897
5898 if (symp != NULL)
5899 *symp = sym;
5900
5901 if (symsecp != NULL)
5902 {
5903 asection *symsec = NULL;
5904 if ((sym->st_shndx != SHN_UNDEF
5905 && sym->st_shndx < SHN_LORESERVE)
5906 || sym->st_shndx > SHN_HIRESERVE)
5907 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5908 *symsecp = symsec;
5909 }
5910
e7b938ca 5911 if (tls_maskp != NULL)
411e1bfb
AM		 5912 {
5913 struct got_entry **lgot_ents;
e7b938ca 5914 char *tls_mask;
411e1bfb 5915
e7b938ca 5916 tls_mask = NULL;
411e1bfb
AM		 5917 lgot_ents = elf_local_got_ents (ibfd);
5918 if (lgot_ents != NULL)
5919 {
e7b938ca
AM		 5920 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5921 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5922 }
e7b938ca 5923 *tls_maskp = tls_mask;
411e1bfb
AM		 5924 }
5925 }
5926 return TRUE;
5927}
5928
e7b938ca 5929/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5930 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5931 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5932
5933static int
0d4792f7
AM		 5934get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5935 Elf_Internal_Sym **locsymsp,
4ce794b7 5936 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5937{
5938 unsigned long r_symndx;
0d4792f7 5939 int next_r;
411e1bfb
AM		 5940 struct elf_link_hash_entry *h;
5941 Elf_Internal_Sym *sym;
5942 asection *sec;
5943 bfd_vma off;
5944
5945 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5946 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5947 return 0;
411e1bfb 5948
e7b938ca 5949 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5950 || sec == NULL
5951 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5952 return 1;
411e1bfb
AM		 5953
5954 /* Look inside a TOC section too. */
5955 if (h != NULL)
5956 {
5957 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5958 off = h->root.u.def.value;
5959 }
5960 else
5961 off = sym->st_value;
5962 off += rel->r_addend;
5963 BFD_ASSERT (off % 8 == 0);
5964 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5965 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5966 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5967 return 0;
0d4792f7
AM		 5968 if (toc_symndx != NULL)
5969 *toc_symndx = r_symndx;
5970 if ((h == NULL
5971 || ((h->root.type == bfd_link_hash_defined
5972 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5973 && !h->def_dynamic))
0d4792f7
AM		 5974 && (next_r == -1 || next_r == -2))
5975 return 1 - next_r;
951fd09b 5976 return 1;
411e1bfb
AM		 5977}
5978
754021d0 5979/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5980 code for the old ABI, these will already have been done. */
754021d0
AM		 5981
5982static bfd_boolean
5983adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5984{
5985 struct ppc_link_hash_entry *eh;
5986 asection *sym_sec;
5987 long *opd_adjust;
5988
5989 if (h->root.type == bfd_link_hash_indirect)
5990 return TRUE;
5991
5992 if (h->root.type == bfd_link_hash_warning)
5993 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5994
5995 if (h->root.type != bfd_link_hash_defined
5996 && h->root.type != bfd_link_hash_defweak)
5997 return TRUE;
5998
5999 eh = (struct ppc_link_hash_entry *) h;
6000 if (eh->adjust_done)
6001 return TRUE;
6002
6003 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 6004 opd_adjust = get_opd_info (sym_sec);
6005 if (opd_adjust != NULL)
754021d0 6006 {
3f764659 6007 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6008 if (adjust == -1)
6009 {
6010 /* This entry has been deleted. */
433817dd 6011 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
81688140
AM		 6012 if (dsec == NULL)
6013 {
6014 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6015 if (elf_discarded_section (dsec))
6016 {
433817dd 6017 ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
81688140
AM		 6018 break;
6019 }
6020 }
4025353c 6021 eh->elf.root.u.def.value = 0;
81688140 6022 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6023 }
6024 else
6025 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6026 eh->adjust_done = 1;
6027 }
6028 return TRUE;
6029}
6030
8c1d1bb8
AM		 6031/* Handles decrementing dynamic reloc counts for the reloc specified by
6032 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6033 have already been determined. */
6034
6035static bfd_boolean
6036dec_dynrel_count (bfd_vma r_info,
6037 asection *sec,
6038 struct bfd_link_info *info,
6039 Elf_Internal_Sym **local_syms,
6040 struct elf_link_hash_entry *h,
6041 asection *sym_sec)
6042{
6043 enum elf_ppc64_reloc_type r_type;
6044 struct ppc_dyn_relocs *p;
6045 struct ppc_dyn_relocs **pp;
6046
6047 /* Can this reloc be dynamic? This switch, and later tests here
6048 should be kept in sync with the code in check_relocs. */
6049 r_type = ELF64_R_TYPE (r_info);
6050 switch (r_type)
6051 {
6052 default:
6053 return TRUE;
6054
6055 case R_PPC64_TPREL16:
6056 case R_PPC64_TPREL16_LO:
6057 case R_PPC64_TPREL16_HI:
6058 case R_PPC64_TPREL16_HA:
6059 case R_PPC64_TPREL16_DS:
6060 case R_PPC64_TPREL16_LO_DS:
6061 case R_PPC64_TPREL16_HIGHER:
6062 case R_PPC64_TPREL16_HIGHERA:
6063 case R_PPC64_TPREL16_HIGHEST:
6064 case R_PPC64_TPREL16_HIGHESTA:
6065 if (!info->shared)
6066 return TRUE;
6067
6068 case R_PPC64_TPREL64:
6069 case R_PPC64_DTPMOD64:
6070 case R_PPC64_DTPREL64:
6071 case R_PPC64_ADDR64:
6072 case R_PPC64_REL30:
6073 case R_PPC64_REL32:
6074 case R_PPC64_REL64:
6075 case R_PPC64_ADDR14:
6076 case R_PPC64_ADDR14_BRNTAKEN:
6077 case R_PPC64_ADDR14_BRTAKEN:
6078 case R_PPC64_ADDR16:
6079 case R_PPC64_ADDR16_DS:
6080 case R_PPC64_ADDR16_HA:
6081 case R_PPC64_ADDR16_HI:
6082 case R_PPC64_ADDR16_HIGHER:
6083 case R_PPC64_ADDR16_HIGHERA:
6084 case R_PPC64_ADDR16_HIGHEST:
6085 case R_PPC64_ADDR16_HIGHESTA:
6086 case R_PPC64_ADDR16_LO:
6087 case R_PPC64_ADDR16_LO_DS:
6088 case R_PPC64_ADDR24:
6089 case R_PPC64_ADDR32:
6090 case R_PPC64_UADDR16:
6091 case R_PPC64_UADDR32:
6092 case R_PPC64_UADDR64:
6093 case R_PPC64_TOC:
6094 break;
6095 }
6096
6097 if (local_syms != NULL)
6098 {
6099 unsigned long r_symndx;
6100 Elf_Internal_Sym *sym;
6101 bfd *ibfd = sec->owner;
6102
6103 r_symndx = ELF64_R_SYM (r_info);
6104 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6105 return FALSE;
6106 }
6107
6108 if ((info->shared
6109 && (MUST_BE_DYN_RELOC (r_type)
6110 || (h != NULL
6111 && (!info->symbolic
6112 || h->root.type == bfd_link_hash_defweak
6113 || !h->def_regular))))
6114 || (ELIMINATE_COPY_RELOCS
6115 && !info->shared
6116 && h != NULL
6117 && (h->root.type == bfd_link_hash_defweak
6118 || !h->def_regular)))
6119 ;
6120 else
6121 return TRUE;
6122
6123 if (h != NULL)
6124 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6125 else if (sym_sec != NULL)
6126 pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel;
6127 else
6128 pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel;
6129
6130 while ((p = *pp) != NULL)
6131 {
6132 if (p->sec == sec)
6133 {
6134 if (!MUST_BE_DYN_RELOC (r_type))
6135 p->pc_count -= 1;
6136 p->count -= 1;
6137 if (p->count == 0)
6138 *pp = p->next;
6139 return TRUE;
6140 }
6141 pp = &p->next;
6142 }
6143
6144 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6145 sec->owner, sec);
6146 bfd_set_error (bfd_error_bad_value);
6147 return FALSE;
6148}
6149
754021d0
AM		 6150/* Remove unused Official Procedure Descriptor entries. Currently we
6151 only remove those associated with functions in discarded link-once
6152 sections, or weakly defined functions that have been overridden. It
6153 would be possible to remove many more entries for statically linked
6154 applications. */
6155
b34976b6 6156bfd_boolean
3f764659 6157ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6158 bfd_boolean no_opd_opt,
3f764659 6159 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6160{
6161 bfd *ibfd;
754021d0 6162 bfd_boolean some_edited = FALSE;
3f764659 6163 asection *need_pad = NULL;
1e2f5b6e 6164
411e1bfb 6165 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6166 {
6167 asection *sec;
6168 Elf_Internal_Rela *relstart, *rel, *relend;
6169 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6170 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6171 struct elf_link_hash_entry **sym_hashes;
6172 bfd_vma offset;
d6fe2dc1 6173 bfd_size_type amt;
4025353c 6174 long *opd_adjust;
3f764659
JJ		 6175 bfd_boolean need_edit, add_aux_fields;
6176 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6177
6178 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6179 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6180 continue;
6181
3f764659 6182 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 6183 opd_adjust = get_opd_info (sec);
6184 if (opd_adjust == NULL)
d6fe2dc1 6185 {
4b85d634
AM		 6186 /* check_relocs hasn't been called. Must be a ld -r link
6187 or --just-symbols object. */
b4f4e59f 6188 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM		 6189 if (opd_adjust == NULL)
6190 return FALSE;
4025353c 6191 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 6192 }
4025353c 6193 memset (opd_adjust, 0, amt);
1e2f5b6e 6194
b4f4e59f
AM		 6195 if (no_opd_opt)
6196 continue;
6197
4b85d634
AM		 6198 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6199 continue;
6200
1e2f5b6e
AM		 6201 if (sec->output_section == bfd_abs_section_ptr)
6202 continue;
6203
6204 /* Look through the section relocs. */
6205 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6206 continue;
6207
6cdc0ccc 6208 local_syms = NULL;
1e2f5b6e
AM		 6209 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6210 sym_hashes = elf_sym_hashes (ibfd);
6211
6212 /* Read the relocations. */
4ce794b7 6213 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6214 info->keep_memory);
1e2f5b6e 6215 if (relstart == NULL)
b34976b6 6216 return FALSE;
1e2f5b6e
AM		 6217
6218 /* First run through the relocs to check they are sane, and to
6219 determine whether we need to edit this opd section. */
b34976b6 6220 need_edit = FALSE;
3f764659 6221 need_pad = sec;
1e2f5b6e
AM		 6222 offset = 0;
6223 relend = relstart + sec->reloc_count;
50bc7936 6224 for (rel = relstart; rel < relend; )
1e2f5b6e 6225 {
04c9666a 6226 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6227 unsigned long r_symndx;
6228 asection *sym_sec;
6229 struct elf_link_hash_entry *h;
6230 Elf_Internal_Sym *sym;
6231
3f764659 6232 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6233 only interested in the reloc pointing to a function entry
6234 point. */
50bc7936
AM		 6235 if (rel->r_offset != offset
6236 || rel + 1 >= relend
6237 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6238 {
6239 /* If someone messes with .opd alignment then after a
6240 "ld -r" we might have padding in the middle of .opd.
6241 Also, there's nothing to prevent someone putting
6242 something silly in .opd with the assembler. No .opd
b34976b6 6243 optimization for them! */
3f764659 6244 broken_opd:
1e2f5b6e 6245 (*_bfd_error_handler)
d003868e 6246 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6247 need_edit = FALSE;
1e2f5b6e
AM		 6248 break;
6249 }
6250
50bc7936
AM		 6251 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6252 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6253 {
6254 (*_bfd_error_handler)
d003868e
AM		 6255 (_("%B: unexpected reloc type %u in .opd section"),
6256 ibfd, r_type);
50bc7936
AM		 6257 need_edit = FALSE;
6258 break;
6259 }
6260
1e2f5b6e 6261 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6262 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6263 r_symndx, ibfd))
50bc7936 6264 goto error_ret;
1e2f5b6e
AM		 6265
6266 if (sym_sec == NULL || sym_sec->owner == NULL)
6267 {
411e1bfb
AM		 6268 const char *sym_name;
6269 if (h != NULL)
6270 sym_name = h->root.root.string;
6271 else
26c61ae5
L		 6272 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6273 sym_sec);
411e1bfb 6274
1e2f5b6e 6275 (*_bfd_error_handler)
d003868e
AM		 6276 (_("%B: undefined sym `%s' in .opd section"),
6277 ibfd, sym_name);
b34976b6 6278 need_edit = FALSE;
1e2f5b6e
AM		 6279 break;
6280 }
6281
51020317
AM		 6282 /* opd entries are always for functions defined in the
6283 current input bfd. If the symbol isn't defined in the
6284 input bfd, then we won't be using the function in this
6285 bfd; It must be defined in a linkonce section in another
6286 bfd, or is weak. It's also possible that we are
6287 discarding the function due to a linker script /DISCARD/,
6288 which we test for via the output_section. */
6289 if (sym_sec->owner != ibfd
6290 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6291 need_edit = TRUE;
1e2f5b6e 6292
50bc7936 6293 rel += 2;
3f764659
JJ		 6294 if (rel == relend
6295 || (rel + 1 == relend && rel->r_offset == offset + 16))
6296 {
6297 if (sec->size == offset + 24)
6298 {
6299 need_pad = NULL;
6300 break;
6301 }
6302 if (rel == relend && sec->size == offset + 16)
6303 {
6304 cnt_16b++;
6305 break;
6306 }
6307 goto broken_opd;
6308 }
6309
6310 if (rel->r_offset == offset + 24)
6311 offset += 24;
6312 else if (rel->r_offset != offset + 16)
6313 goto broken_opd;
6314 else if (rel + 1 < relend
6315 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6316 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6317 {
6318 offset += 16;
6319 cnt_16b++;
6320 }
6321 else if (rel + 2 < relend
6322 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6323 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6324 {
6325 offset += 24;
6326 rel += 1;
6327 }
6328 else
6329 goto broken_opd;
1e2f5b6e
AM		 6330 }
6331
3f764659
JJ		 6332 add_aux_fields = non_overlapping && cnt_16b > 0;
6333
6334 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6335 {
6336 Elf_Internal_Rela *write_rel;
6337 bfd_byte *rptr, *wptr;
3f764659 6338 bfd_byte *new_contents = NULL;
b34976b6 6339 bfd_boolean skip;
3f764659 6340 long opd_ent_size;
1e2f5b6e
AM		 6341
6342 /* This seems a waste of time as input .opd sections are all
6343 zeros as generated by gcc, but I suppose there's no reason
6344 this will always be so. We might start putting something in
6345 the third word of .opd entries. */
6346 if ((sec->flags & SEC_IN_MEMORY) == 0)
6347 {
eea6121a
AM		 6348 bfd_byte *loc;
6349 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6350 {
eea6121a
AM		 6351 if (loc != NULL)
6352 free (loc);
50bc7936 6353 error_ret:
6cdc0ccc
AM		 6354 if (local_syms != NULL
6355 && symtab_hdr->contents != (unsigned char *) local_syms)
6356 free (local_syms);
6cdc0ccc
AM		 6357 if (elf_section_data (sec)->relocs != relstart)
6358 free (relstart);
b34976b6 6359 return FALSE;
6cdc0ccc 6360 }
1e2f5b6e
AM		 6361 sec->contents = loc;
6362 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6363 }
6364
6365 elf_section_data (sec)->relocs = relstart;
6366
3f764659 6367 new_contents = sec->contents;
3f764659
JJ		 6368 if (add_aux_fields)
6369 {
6370 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6371 if (new_contents == NULL)
6372 return FALSE;
6373 need_pad = FALSE;
3f764659 6374 }
b4f4e59f
AM		 6375 wptr = new_contents;
6376 rptr = sec->contents;
3f764659 6377
1e2f5b6e 6378 write_rel = relstart;
b34976b6 6379 skip = FALSE;
1e2f5b6e 6380 offset = 0;
3f764659 6381 opd_ent_size = 0;
1e2f5b6e
AM		 6382 for (rel = relstart; rel < relend; rel++)
6383 {
50bc7936
AM		 6384 unsigned long r_symndx;
6385 asection *sym_sec;
6386 struct elf_link_hash_entry *h;
6387 Elf_Internal_Sym *sym;
6388
6389 r_symndx = ELF64_R_SYM (rel->r_info);
6390 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6391 r_symndx, ibfd))
50bc7936
AM		 6392 goto error_ret;
6393
1e2f5b6e
AM		 6394 if (rel->r_offset == offset)
6395 {
50bc7936 6396 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6397
6398 /* See if the .opd entry is full 24 byte or
6399 16 byte (with fd_aux entry overlapped with next
6400 fd_func). */
6401 opd_ent_size = 24;
6402 if ((rel + 2 == relend && sec->size == offset + 16)
6403 || (rel + 3 < relend
6404 && rel[2].r_offset == offset + 16
6405 && rel[3].r_offset == offset + 24
6406 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6407 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6408 opd_ent_size = 16;
6409
4025353c
AM		 6410 if (h != NULL
6411 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6412 {
6413 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6414 ppc_hash_table (info));
6415 if (fdh != NULL
6416 && fdh->elf.root.type != bfd_link_hash_defined
6417 && fdh->elf.root.type != bfd_link_hash_defweak)
6418 fdh = NULL;
6419 }
1e2f5b6e 6420
51020317
AM		 6421 skip = (sym_sec->owner != ibfd
6422 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6423 if (skip)
6424 {
4025353c 6425 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6426 {
6427 /* Arrange for the function descriptor sym
6428 to be dropped. */
d6fe2dc1
AM		 6429 fdh->elf.root.u.def.value = 0;
6430 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6431 }
3f764659 6432 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6433 }
6434 else
1e2f5b6e
AM		 6435 {
6436 /* We'll be keeping this opd entry. */
6437
4025353c 6438 if (fdh != NULL)
1e2f5b6e 6439 {
754021d0
AM		 6440 /* Redefine the function descriptor symbol to
6441 this location in the opd section. It is
6442 necessary to update the value here rather
6443 than using an array of adjustments as we do
6444 for local symbols, because various places
6445 in the generic ELF code use the value
6446 stored in u.def.value. */
3f764659 6447 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6448 fdh->adjust_done = 1;
1e2f5b6e 6449 }
754021d0
AM		 6450
6451 /* Local syms are a bit tricky. We could
6452 tweak them as they can be cached, but
6453 we'd need to look through the local syms
6454 for the function descriptor sym which we
6455 don't have at the moment. So keep an
6456 array of adjustments. */
3f764659
JJ		 6457 opd_adjust[rel->r_offset / 8]
6458 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6459
6460 if (wptr != rptr)
3f764659
JJ		 6461 memcpy (wptr, rptr, opd_ent_size);
6462 wptr += opd_ent_size;
6463 if (add_aux_fields && opd_ent_size == 16)
6464 {
6465 memset (wptr, '\0', 8);
6466 wptr += 8;
6467 }
1e2f5b6e 6468 }
3f764659
JJ		 6469 rptr += opd_ent_size;
6470 offset += opd_ent_size;
1e2f5b6e
AM		 6471 }
6472
50bc7936
AM		 6473 if (skip)
6474 {
8c1d1bb8
AM		 6475 if (!dec_dynrel_count (rel->r_info, sec, info,
6476 NULL, h, sym_sec))
6477 goto error_ret;
50bc7936
AM		 6478 }
6479 else
1e2f5b6e 6480 {
50bc7936
AM		 6481 /* We need to adjust any reloc offsets to point to the
6482 new opd entries. While we're at it, we may as well
6483 remove redundant relocs. */
3f764659 6484 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6485 if (write_rel != rel)
6486 memcpy (write_rel, rel, sizeof (*rel));
6487 ++write_rel;
6488 }
6489 }
6490
3f764659 6491 sec->size = wptr - new_contents;
1e2f5b6e 6492 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6493 if (add_aux_fields)
6494 {
6495 free (sec->contents);
6496 sec->contents = new_contents;
6497 }
6498
cdcf6e38
AM		 6499 /* Fudge the size too, as this is used later in
6500 elf_bfd_final_link if we are emitting relocs. */
6501 elf_section_data (sec)->rel_hdr.sh_size
6502 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6503 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6504 some_edited = TRUE;
1e2f5b6e 6505 }
6cdc0ccc 6506 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6507 free (relstart);
6cdc0ccc 6508
411e1bfb
AM		 6509 if (local_syms != NULL
6510 && symtab_hdr->contents != (unsigned char *) local_syms)
6511 {
6512 if (!info->keep_memory)
6513 free (local_syms);
6514 else
6515 symtab_hdr->contents = (unsigned char *) local_syms;
6516 }
6517 }
6518
754021d0
AM		 6519 if (some_edited)
6520 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6521
3f764659
JJ		 6522 /* If we are doing a final link and the last .opd entry is just 16 byte
6523 long, add a 8 byte padding after it. */
6524 if (need_pad != NULL && !info->relocatable)
6525 {
6526 bfd_byte *p;
6527
6528 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6529 {
6530 BFD_ASSERT (need_pad->size > 0);
6531
6532 p = bfd_malloc (need_pad->size + 8);
6533 if (p == NULL)
6534 return FALSE;
699733f6 6535
3f764659
JJ		 6536 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6537 p, 0, need_pad->size))
6538 return FALSE;
6539
6540 need_pad->contents = p;
6541 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6542 }
6543 else
6544 {
6545 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6546 if (p == NULL)
6547 return FALSE;
6548
6549 need_pad->contents = p;
6550 }
6551
6552 memset (need_pad->contents + need_pad->size, 0, 8);
6553 need_pad->size += 8;
6554 }
6555
411e1bfb
AM		 6556 return TRUE;
6557}
6558
e1918d23 6559/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6560
e1918d23 6561asection *
4ce794b7 6562ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6563{
411e1bfb
AM		 6564 struct ppc_link_hash_table *htab;
6565
411e1bfb 6566 htab = ppc_hash_table (info);
a48ebf4d
AM		 6567 if (htab->tls_get_addr != NULL)
6568 {
8387904d 6569 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6570
8387904d
AM		 6571 while (h->elf.root.type == bfd_link_hash_indirect
6572 || h->elf.root.type == bfd_link_hash_warning)
6573 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6574
6575 htab->tls_get_addr = h;
8387904d
AM		 6576
6577 if (htab->tls_get_addr_fd == NULL
6578 && h->oh != NULL
c4f68ce3
AM		 6579 && h->oh->is_func_descriptor
6580 && (h->oh->elf.root.type == bfd_link_hash_defined
6581 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6582 htab->tls_get_addr_fd = h->oh;
6583 }
6584
6585 if (htab->tls_get_addr_fd != NULL)
6586 {
6587 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6588
6589 while (h->elf.root.type == bfd_link_hash_indirect
6590 || h->elf.root.type == bfd_link_hash_warning)
6591 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6592
6593 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6594 }
6595
e1918d23 6596 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6597}
411e1bfb 6598
951fd09b
AM		 6599/* Run through all the TLS relocs looking for optimization
6600 opportunities. The linker has been hacked (see ppc64elf.em) to do
6601 a preliminary section layout so that we know the TLS segment
6602 offsets. We can't optimize earlier because some optimizations need
6603 to know the tp offset, and we need to optimize before allocating
6604 dynamic relocations. */
6605
6606bfd_boolean
4ce794b7 6607ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6608{
6609 bfd *ibfd;
6610 asection *sec;
6611 struct ppc_link_hash_table *htab;
6612
1049f94e 6613 if (info->relocatable || info->shared)
411e1bfb
AM		 6614 return TRUE;
6615
951fd09b 6616 htab = ppc_hash_table (info);
411e1bfb
AM		 6617 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6618 {
6619 Elf_Internal_Sym *locsyms = NULL;
6620
6621 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6622 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6623 {
6624 Elf_Internal_Rela *relstart, *rel, *relend;
6625 int expecting_tls_get_addr;
6626
6627 /* Read the relocations. */
4ce794b7 6628 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6629 info->keep_memory);
411e1bfb
AM		 6630 if (relstart == NULL)
6631 return FALSE;
6632
6633 expecting_tls_get_addr = 0;
6634 relend = relstart + sec->reloc_count;
6635 for (rel = relstart; rel < relend; rel++)
6636 {
6637 enum elf_ppc64_reloc_type r_type;
6638 unsigned long r_symndx;
6639 struct elf_link_hash_entry *h;
6640 Elf_Internal_Sym *sym;
6641 asection *sym_sec;
e7b938ca
AM		 6642 char *tls_mask;
6643 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6644 bfd_vma value;
951fd09b 6645 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6646
6647 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6648 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6649 r_symndx, ibfd))
6650 {
6651 err_free_rel:
6652 if (elf_section_data (sec)->relocs != relstart)
6653 free (relstart);
6654 if (locsyms != NULL
6655 && (elf_tdata (ibfd)->symtab_hdr.contents
6656 != (unsigned char *) locsyms))
6657 free (locsyms);
6658 return FALSE;
6659 }
6660
6661 if (h != NULL)
6662 {
6663 if (h->root.type != bfd_link_hash_defined
6664 && h->root.type != bfd_link_hash_defweak)
6665 continue;
6666 value = h->root.u.def.value;
6667 }
6668 else
4025353c
AM		 6669 /* Symbols referenced by TLS relocs must be of type
6670 STT_TLS. So no need for .opd local sym adjust. */
6671 value = sym->st_value;
951fd09b 6672
411e1bfb 6673 ok_tprel = FALSE;
951fd09b
AM		 6674 is_local = FALSE;
6675 if (h == NULL
f5385ebf 6676 || !h->def_dynamic)
411e1bfb 6677 {
951fd09b 6678 is_local = TRUE;
411e1bfb
AM		 6679 value += sym_sec->output_offset;
6680 value += sym_sec->output_section->vma;
e1918d23 6681 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6682 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6683 < (bfd_vma) 1 << 32);
6684 }
6685
4ce794b7 6686 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6687 switch (r_type)
6688 {
6689 case R_PPC64_GOT_TLSLD16:
6690 case R_PPC64_GOT_TLSLD16_LO:
6691 case R_PPC64_GOT_TLSLD16_HI:
6692 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6693 /* These relocs should never be against a symbol
6694 defined in a shared lib. Leave them alone if
6695 that turns out to be the case. */
e717da7e 6696 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6697 if (!is_local)
6698 continue;
6699
951fd09b
AM		 6700 /* LD -> LE */
6701 tls_set = 0;
6702 tls_clear = TLS_LD;
e7b938ca 6703 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6704 expecting_tls_get_addr = 1;
6705 break;
6706
6707 case R_PPC64_GOT_TLSGD16:
6708 case R_PPC64_GOT_TLSGD16_LO:
6709 case R_PPC64_GOT_TLSGD16_HI:
6710 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6711 if (ok_tprel)
411e1bfb
AM		 6712 /* GD -> LE */
6713 tls_set = 0;
6714 else
6715 /* GD -> IE */
951fd09b
AM		 6716 tls_set = TLS_TLS | TLS_TPRELGD;
6717 tls_clear = TLS_GD;
e7b938ca 6718 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6719 expecting_tls_get_addr = 1;
6720 break;
6721
6722 case R_PPC64_GOT_TPREL16_DS:
6723 case R_PPC64_GOT_TPREL16_LO_DS:
6724 case R_PPC64_GOT_TPREL16_HI:
6725 case R_PPC64_GOT_TPREL16_HA:
6726 expecting_tls_get_addr = 0;
6727 if (ok_tprel)
6728 {
6729 /* IE -> LE */
6730 tls_set = 0;
6731 tls_clear = TLS_TPREL;
e7b938ca 6732 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6733 break;
6734 }
6735 else
6736 continue;
6737
6738 case R_PPC64_REL14:
6739 case R_PPC64_REL14_BRTAKEN:
6740 case R_PPC64_REL14_BRNTAKEN:
6741 case R_PPC64_REL24:
6742 if (h != NULL
8387904d
AM		 6743 && (h == &htab->tls_get_addr->elf
6744 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6745 {
6746 if (!expecting_tls_get_addr
6747 && rel != relstart
6748 && ((ELF64_R_TYPE (rel[-1].r_info)
6749 == R_PPC64_TOC16)
6750 || (ELF64_R_TYPE (rel[-1].r_info)
6751 == R_PPC64_TOC16_LO)))
6752 {
6753 /* Check for toc tls entries. */
6754 char *toc_tls;
951fd09b 6755 int retval;
411e1bfb 6756
0d4792f7 6757 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6758 rel - 1, ibfd);
6759 if (retval == 0)
411e1bfb
AM		 6760 goto err_free_rel;
6761 if (toc_tls != NULL)
951fd09b 6762 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6763 }
6764
6765 if (expecting_tls_get_addr)
6766 {
6767 struct plt_entry *ent;
6768 for (ent = h->plt.plist; ent; ent = ent->next)
6769 if (ent->addend == 0)
6770 {
6771 if (ent->plt.refcount > 0)
6772 ent->plt.refcount -= 1;
6773 break;
6774 }
6775 }
6776 }
6777 expecting_tls_get_addr = 0;
6778 continue;
6779
6780 case R_PPC64_TPREL64:
6781 expecting_tls_get_addr = 0;
6782 if (ok_tprel)
6783 {
6784 /* IE -> LE */
6785 tls_set = TLS_EXPLICIT;
6786 tls_clear = TLS_TPREL;
6787 break;
6788 }
6789 else
6790 continue;
6791
6792 case R_PPC64_DTPMOD64:
6793 expecting_tls_get_addr = 0;
951fd09b
AM		 6794 if (rel + 1 < relend
6795 && (rel[1].r_info
6796 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6797 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6798 {
951fd09b 6799 if (ok_tprel)
411e1bfb 6800 /* GD -> LE */
951fd09b 6801 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6802 else
6803 /* GD -> IE */
951fd09b
AM		 6804 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6805 tls_clear = TLS_GD;
411e1bfb
AM		 6806 }
6807 else
6808 {
951fd09b
AM		 6809 if (!is_local)
6810 continue;
6811
6812 /* LD -> LE */
6813 tls_set = TLS_EXPLICIT;
6814 tls_clear = TLS_LD;
411e1bfb
AM		 6815 }
6816 break;
6817
6818 default:
6819 expecting_tls_get_addr = 0;
6820 continue;
6821 }
6822
6823 if ((tls_set & TLS_EXPLICIT) == 0)
6824 {
6825 struct got_entry *ent;
6826
6827 /* Adjust got entry for this reloc. */
6828 if (h != NULL)
6829 ent = h->got.glist;
6830 else
6831 ent = elf_local_got_ents (ibfd)[r_symndx];
6832
6833 for (; ent != NULL; ent = ent->next)
6834 if (ent->addend == rel->r_addend
e717da7e 6835 && ent->owner == ibfd
e7b938ca 6836 && ent->tls_type == tls_type)
411e1bfb
AM		 6837 break;
6838 if (ent == NULL)
6839 abort ();
6840
6841 if (tls_set == 0)
6842 {
6843 /* We managed to get rid of a got entry. */
6844 if (ent->got.refcount > 0)
6845 ent->got.refcount -= 1;
6846 }
411e1bfb 6847 }
8c1d1bb8 6848 else
411e1bfb 6849 {
8c1d1bb8
AM		 6850 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6851 we'll lose one or two dyn relocs. */
6852 if (!dec_dynrel_count (rel->r_info, sec, info,
6853 NULL, h, sym_sec))
6854 return FALSE;
6855
6856 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6857 {
6858 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6859 NULL, h, sym_sec))
6860 return FALSE;
6861 }
411e1bfb
AM		 6862 }
6863
e7b938ca
AM		 6864 *tls_mask |= tls_set;
6865 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6866 }
6867
6868 if (elf_section_data (sec)->relocs != relstart)
6869 free (relstart);
6870 }
6871
6872 if (locsyms != NULL
6873 && (elf_tdata (ibfd)->symtab_hdr.contents
6874 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6875 {
6876 if (!info->keep_memory)
411e1bfb 6877 free (locsyms);
6cdc0ccc 6878 else
411e1bfb 6879 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6880 }
1e2f5b6e 6881 }
b34976b6 6882 return TRUE;
1e2f5b6e 6883}
b34976b6 6884
c5614fa4
AM		 6885/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6886 the values of any global symbols in a toc section that has been
6887 edited. Globals in toc sections should be a rarity, so this function
6888 sets a flag if any are found in toc sections other than the one just
6889 edited, so that futher hash table traversals can be avoided. */
6890
6891struct adjust_toc_info
6892{
6893 asection *toc;
6894 unsigned long *skip;
6895 bfd_boolean global_toc_syms;
6896};
6897
6898static bfd_boolean
6899adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6900{
6901 struct ppc_link_hash_entry *eh;
6902 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6903
6904 if (h->root.type == bfd_link_hash_indirect)
6905 return TRUE;
6906
6907 if (h->root.type == bfd_link_hash_warning)
6908 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6909
6910 if (h->root.type != bfd_link_hash_defined
6911 && h->root.type != bfd_link_hash_defweak)
6912 return TRUE;
6913
6914 eh = (struct ppc_link_hash_entry *) h;
6915 if (eh->adjust_done)
6916 return TRUE;
6917
6918 if (eh->elf.root.u.def.section == toc_inf->toc)
6919 {
6920 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6921 if (skip != (unsigned long) -1)
6922 eh->elf.root.u.def.value -= skip;
6923 else
6924 {
6925 (*_bfd_error_handler)
6926 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6927 eh->elf.root.u.def.section = &bfd_abs_section;
6928 eh->elf.root.u.def.value = 0;
6929 }
6930 eh->adjust_done = 1;
6931 }
6932 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6933 toc_inf->global_toc_syms = TRUE;
6934
6935 return TRUE;
6936}
6937
6938/* Examine all relocs referencing .toc sections in order to remove
6939 unused .toc entries. */
6940
6941bfd_boolean
6942ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6943{
6944 bfd *ibfd;
6945 struct adjust_toc_info toc_inf;
6946
6947 toc_inf.global_toc_syms = TRUE;
6948 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6949 {
6950 asection *toc, *sec;
6951 Elf_Internal_Shdr *symtab_hdr;
6952 Elf_Internal_Sym *local_syms;
6953 struct elf_link_hash_entry **sym_hashes;
92b7a70f 6954 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 6955 unsigned long *skip, *drop;
6956 unsigned char *used;
6957 unsigned char *keep, last, some_unused;
6958
6959 toc = bfd_get_section_by_name (ibfd, ".toc");
6960 if (toc == NULL
92b7a70f 6961 || toc->size == 0
c5614fa4
AM		 6962 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6963 || elf_discarded_section (toc))
6964 continue;
6965
6966 local_syms = NULL;
6967 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6968 sym_hashes = elf_sym_hashes (ibfd);
6969
6970 /* Look at sections dropped from the final link. */
6971 skip = NULL;
6972 relstart = NULL;
6973 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6974 {
6975 if (sec->reloc_count == 0
6976 || !elf_discarded_section (sec)
6977 || get_opd_info (sec)
6978 || (sec->flags & SEC_ALLOC) == 0
6979 || (sec->flags & SEC_DEBUGGING) != 0)
6980 continue;
6981
6982 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6983 if (relstart == NULL)
6984 goto error_ret;
6985
6986 /* Run through the relocs to see which toc entries might be
6987 unused. */
6988 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6989 {
6990 enum elf_ppc64_reloc_type r_type;
6991 unsigned long r_symndx;
6992 asection *sym_sec;
6993 struct elf_link_hash_entry *h;
6994 Elf_Internal_Sym *sym;
6995 bfd_vma val;
6996
6997 r_type = ELF64_R_TYPE (rel->r_info);
6998 switch (r_type)
6999 {
7000 default:
7001 continue;
7002
7003 case R_PPC64_TOC16:
7004 case R_PPC64_TOC16_LO:
7005 case R_PPC64_TOC16_HI:
7006 case R_PPC64_TOC16_HA:
7007 case R_PPC64_TOC16_DS:
7008 case R_PPC64_TOC16_LO_DS:
7009 break;
7010 }
7011
7012 r_symndx = ELF64_R_SYM (rel->r_info);
7013 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7014 r_symndx, ibfd))
7015 goto error_ret;
7016
7017 if (sym_sec != toc)
7018 continue;
7019
7020 if (h != NULL)
7021 val = h->root.u.def.value;
7022 else
7023 val = sym->st_value;
7024 val += rel->r_addend;
7025
7026 if (val >= toc->size)
7027 continue;
7028
7029 /* Anything in the toc ought to be aligned to 8 bytes.
7030 If not, don't mark as unused. */
7031 if (val & 7)
7032 continue;
7033
7034 if (skip == NULL)
7035 {
7036 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7037 if (skip == NULL)
7038 goto error_ret;
7039 }
7040
7041 skip[val >> 3] = 1;
7042 }
7043
7044 if (elf_section_data (sec)->relocs != relstart)
7045 free (relstart);
7046 }
7047
7048 if (skip == NULL)
7049 continue;
7050
7051 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7052 if (used == NULL)
7053 {
7054 error_ret:
7055 if (local_syms != NULL
7056 && symtab_hdr->contents != (unsigned char *) local_syms)
7057 free (local_syms);
7058 if (sec != NULL
7059 && relstart != NULL
7060 && elf_section_data (sec)->relocs != relstart)
7061 free (relstart);
7062 if (skip != NULL)
7063 free (skip);
7064 return FALSE;
7065 }
7066
7067 /* Now check all kept sections that might reference the toc. */
7068 for (sec = ibfd->sections;
7069 sec != NULL;
7070 /* Check the toc itself last. */
7071 sec = (sec == toc ? NULL
7072 : sec->next == toc && sec->next->next ? sec->next->next
7073 : sec->next == NULL ? toc
7074 : sec->next))
7075 {
7076 int repeat;
7077
7078 if (sec->reloc_count == 0
7079 || elf_discarded_section (sec)
7080 || get_opd_info (sec)
7081 || (sec->flags & SEC_ALLOC) == 0
7082 || (sec->flags & SEC_DEBUGGING) != 0)
7083 continue;
7084
7085 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7086 if (relstart == NULL)
7087 goto error_ret;
7088
7089 /* Mark toc entries referenced as used. */
7090 repeat = 0;
7091 do
7092 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7093 {
7094 enum elf_ppc64_reloc_type r_type;
7095 unsigned long r_symndx;
7096 asection *sym_sec;
7097 struct elf_link_hash_entry *h;
7098 Elf_Internal_Sym *sym;
7099 bfd_vma val;
7100
7101 r_type = ELF64_R_TYPE (rel->r_info);
7102 switch (r_type)
7103 {
7104 case R_PPC64_TOC16:
7105 case R_PPC64_TOC16_LO:
7106 case R_PPC64_TOC16_HI:
7107 case R_PPC64_TOC16_HA:
7108 case R_PPC64_TOC16_DS:
7109 case R_PPC64_TOC16_LO_DS:
7110 /* In case we're taking addresses of toc entries. */
7111 case R_PPC64_ADDR64:
7112 break;
7113
7114 default:
7115 continue;
7116 }
7117
7118 r_symndx = ELF64_R_SYM (rel->r_info);
7119 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7120 r_symndx, ibfd))
7121 {
7122 free (used);
7123 goto error_ret;
7124 }
7125
7126 if (sym_sec != toc)
7127 continue;
7128
7129 if (h != NULL)
7130 val = h->root.u.def.value;
7131 else
7132 val = sym->st_value;
7133 val += rel->r_addend;
7134
7135 if (val >= toc->size)
7136 continue;
7137
7138 /* For the toc section, we only mark as used if
7139 this entry itself isn't unused. */
7140 if (sec == toc
7141 && !used[val >> 3]
7142 && (used[rel->r_offset >> 3]
7143 || !skip[rel->r_offset >> 3]))
7144 /* Do all the relocs again, to catch reference
7145 chains. */
7146 repeat = 1;
7147
7148 used[val >> 3] = 1;
7149 }
7150 while (repeat);
7151 }
7152
7153 /* Merge the used and skip arrays. Assume that TOC
7154 doublewords not appearing as either used or unused belong
7155 to to an entry more than one doubleword in size. */
7156 for (drop = skip, keep = used, last = 0, some_unused = 0;
7157 drop < skip + (toc->size + 7) / 8;
7158 ++drop, ++keep)
7159 {
7160 if (*keep)
7161 {
7162 *drop = 0;
7163 last = 0;
7164 }
7165 else if (*drop)
7166 {
7167 some_unused = 1;
7168 last = 1;
7169 }
7170 else
7171 *drop = last;
7172 }
7173
7174 free (used);
7175
7176 if (some_unused)
7177 {
7178 bfd_byte *contents, *src;
7179 unsigned long off;
7180
7181 /* Shuffle the toc contents, and at the same time convert the
7182 skip array from booleans into offsets. */
7183 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7184 goto error_ret;
7185
7186 elf_section_data (toc)->this_hdr.contents = contents;
7187
7188 for (src = contents, off = 0, drop = skip;
7189 src < contents + toc->size;
7190 src += 8, ++drop)
7191 {
7192 if (*drop)
7193 {
7194 *drop = (unsigned long) -1;
7195 off += 8;
7196 }
7197 else if (off != 0)
7198 {
7199 *drop = off;
7200 memcpy (src - off, src, 8);
7201 }
7202 }
7203 toc->rawsize = toc->size;
7204 toc->size = src - contents - off;
7205
92b7a70f
AM		 7206 if (toc->reloc_count != 0)
7207 {
7208 Elf_Internal_Rela *wrel;
7209 bfd_size_type sz;
c5614fa4 7210
92b7a70f
AM		 7211 /* Read toc relocs. */
7212 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7213 TRUE);
7214 if (relstart == NULL)
7215 goto error_ret;
7216
7217 /* Remove unused toc relocs, and adjust those we keep. */
7218 wrel = relstart;
7219 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7220 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7221 {
7222 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7223 wrel->r_info = rel->r_info;
7224 wrel->r_addend = rel->r_addend;
7225 ++wrel;
7226 }
8c1d1bb8
AM		 7227 else if (!dec_dynrel_count (rel->r_info, toc, info,
7228 &local_syms, NULL, NULL))
7229 goto error_ret;
35090471 7230
92b7a70f
AM		 7231 toc->reloc_count = wrel - relstart;
7232 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7233 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7234 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7235 }
c5614fa4
AM		 7236
7237 /* Adjust addends for relocs against the toc section sym. */
7238 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7239 {
7240 if (sec->reloc_count == 0
7241 || elf_discarded_section (sec))
7242 continue;
7243
7244 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7245 TRUE);
7246 if (relstart == NULL)
7247 goto error_ret;
7248
7249 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7250 {
7251 enum elf_ppc64_reloc_type r_type;
7252 unsigned long r_symndx;
7253 asection *sym_sec;
7254 struct elf_link_hash_entry *h;
7255 Elf_Internal_Sym *sym;
7256
7257 r_type = ELF64_R_TYPE (rel->r_info);
7258 switch (r_type)
7259 {
7260 default:
7261 continue;
7262
7263 case R_PPC64_TOC16:
7264 case R_PPC64_TOC16_LO:
7265 case R_PPC64_TOC16_HI:
7266 case R_PPC64_TOC16_HA:
7267 case R_PPC64_TOC16_DS:
7268 case R_PPC64_TOC16_LO_DS:
7269 case R_PPC64_ADDR64:
7270 break;
7271 }
7272
7273 r_symndx = ELF64_R_SYM (rel->r_info);
7274 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7275 r_symndx, ibfd))
7276 goto error_ret;
7277
7278 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7279 continue;
7280
7281 rel->r_addend -= skip[rel->r_addend >> 3];
7282 }
7283 }
7284
7285 /* We shouldn't have local or global symbols defined in the TOC,
7286 but handle them anyway. */
7287 if (local_syms != NULL)
7288 {
7289 Elf_Internal_Sym *sym;
7290
7291 for (sym = local_syms;
7292 sym < local_syms + symtab_hdr->sh_info;
7293 ++sym)
7294 if (sym->st_shndx != SHN_UNDEF
7295 && (sym->st_shndx < SHN_LORESERVE
7296 || sym->st_shndx > SHN_HIRESERVE)
7297 && sym->st_value != 0
7298 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7299 {
7300 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7301 sym->st_value -= skip[sym->st_value >> 3];
7302 else
7303 {
7304 (*_bfd_error_handler)
7305 (_("%s defined in removed toc entry"),
26c61ae5
L		 7306 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7307 NULL));
c5614fa4
AM		 7308 sym->st_value = 0;
7309 sym->st_shndx = SHN_ABS;
7310 }
7311 symtab_hdr->contents = (unsigned char *) local_syms;
7312 }
7313 }
7314
7315 /* Finally, adjust any global syms defined in the toc. */
7316 if (toc_inf.global_toc_syms)
7317 {
7318 toc_inf.toc = toc;
7319 toc_inf.skip = skip;
7320 toc_inf.global_toc_syms = FALSE;
7321 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7322 &toc_inf);
7323 }
7324 }
7325
7326 if (local_syms != NULL
7327 && symtab_hdr->contents != (unsigned char *) local_syms)
7328 {
7329 if (!info->keep_memory)
7330 free (local_syms);
7331 else
7332 symtab_hdr->contents = (unsigned char *) local_syms;
7333 }
7334 free (skip);
7335 }
7336
7337 return TRUE;
7338}
7339
65f38f15
AM		 7340/* Allocate space in .plt, .got and associated reloc sections for
7341 dynamic relocs. */
5bd4f169 7342
b34976b6 7343static bfd_boolean
4ce794b7 7344allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7345{
65f38f15
AM		 7346 struct bfd_link_info *info;
7347 struct ppc_link_hash_table *htab;
5bd4f169 7348 asection *s;
65f38f15
AM		 7349 struct ppc_link_hash_entry *eh;
7350 struct ppc_dyn_relocs *p;
411e1bfb 7351 struct got_entry *gent;
5bd4f169 7352
e92d460e 7353 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7354 return TRUE;
5bd4f169 7355
e92d460e
AM		 7356 if (h->root.type == bfd_link_hash_warning)
7357 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7358
65f38f15
AM		 7359 info = (struct bfd_link_info *) inf;
7360 htab = ppc_hash_table (info);
5bd4f169 7361
65f38f15 7362 if (htab->elf.dynamic_sections_created
411e1bfb 7363 && h->dynindx != -1
9c7a29a3 7364 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7365 {
411e1bfb
AM		 7366 struct plt_entry *pent;
7367 bfd_boolean doneone = FALSE;
7368 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7369 if (pent->plt.refcount > 0)
7370 {
411e1bfb
AM		 7371 /* If this is the first .plt entry, make room for the special
7372 first entry. */
4ce794b7 7373 s = htab->plt;
eea6121a
AM		 7374 if (s->size == 0)
7375 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7376
eea6121a 7377 pent->plt.offset = s->size;
411e1bfb
AM		 7378
7379 /* Make room for this entry. */
eea6121a 7380 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7381
7382 /* Make room for the .glink code. */
4ce794b7 7383 s = htab->glink;
eea6121a
AM		 7384 if (s->size == 0)
7385 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7386 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7387 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7388 s->size += 4;
7389 s->size += 2*4;
411e1bfb
AM		 7390
7391 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7392 s = htab->relplt;
eea6121a 7393 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7394 doneone = TRUE;
7395 }
7396 else
7397 pent->plt.offset = (bfd_vma) -1;
7398 if (!doneone)
65f38f15 7399 {
411e1bfb 7400 h->plt.plist = NULL;
f5385ebf 7401 h->needs_plt = 0;
65f38f15
AM		 7402 }
7403 }
7404 else
7405 {
411e1bfb 7406 h->plt.plist = NULL;
f5385ebf 7407 h->needs_plt = 0;
65f38f15
AM		 7408 }
7409
951fd09b
AM		 7410 eh = (struct ppc_link_hash_entry *) h;
7411 /* Run through the TLS GD got entries first if we're changing them
7412 to TPREL. */
e7b938ca 7413 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7414 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7415 if (gent->got.refcount > 0
7416 && (gent->tls_type & TLS_GD) != 0)
7417 {
7418 /* This was a GD entry that has been converted to TPREL. If
7419 there happens to be a TPREL entry we can use that one. */
7420 struct got_entry *ent;
7421 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7422 if (ent->got.refcount > 0
7423 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7424 && ent->addend == gent->addend
7425 && ent->owner == gent->owner)
951fd09b
AM		 7426 {
7427 gent->got.refcount = 0;
7428 break;
7429 }
7430
7431 /* If not, then we'll be using our own TPREL entry. */
7432 if (gent->got.refcount != 0)
7433 gent->tls_type = TLS_TLS | TLS_TPREL;
7434 }
7435
411e1bfb
AM		 7436 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7437 if (gent->got.refcount > 0)
7438 {
951fd09b
AM		 7439 bfd_boolean dyn;
7440
411e1bfb 7441 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7442 Undefined weak syms won't yet be marked as dynamic,
7443 nor will all TLS symbols. */
411e1bfb 7444 if (h->dynindx == -1
f5385ebf 7445 && !h->forced_local)
411e1bfb 7446 {
c152c796 7447 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7448 return FALSE;
7449 }
65f38f15 7450
d881513a 7451 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7452 && !h->def_dynamic)
411e1bfb 7453 {
e717da7e 7454 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7455 continue;
411e1bfb 7456 }
951fd09b 7457
e717da7e 7458 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7459 gent->got.offset = s->size;
7460 s->size
d881513a 7461 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7462 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7463 if ((info->shared
7464 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7465 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7466 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7467 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7468 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7469 ? 2 * sizeof (Elf64_External_Rela)
7470 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7471 }
7472 else
7473 gent->got.offset = (bfd_vma) -1;
65f38f15 7474
65f38f15 7475 if (eh->dyn_relocs == NULL)
b34976b6 7476 return TRUE;
65f38f15
AM		 7477
7478 /* In the shared -Bsymbolic case, discard space allocated for
7479 dynamic pc-relative relocs against symbols which turn out to be
7480 defined in regular objects. For the normal shared case, discard
7481 space for relocs that have become local due to symbol visibility
7482 changes. */
7483
7484 if (info->shared)
7485 {
9c7a29a3
AM		 7486 /* Relocs that use pc_count are those that appear on a call insn,
7487 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7488 generated via assembly. We want calls to protected symbols to
7489 resolve directly to the function rather than going via the plt.
7490 If people want function pointer comparisons to work as expected
7491 then they should avoid writing weird assembly. */
09695f56 7492 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7493 {
7494 struct ppc_dyn_relocs **pp;
7495
7496 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7497 {
65f38f15
AM		 7498 p->count -= p->pc_count;
7499 p->pc_count = 0;
7500 if (p->count == 0)
7501 *pp = p->next;
7502 else
7503 pp = &p->next;
5bd4f169 7504 }
65f38f15 7505 }
4e795f50
AM		 7506
7507 /* Also discard relocs on undefined weak syms with non-default
7508 visibility. */
7509 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7510 && h->root.type == bfd_link_hash_undefweak)
7511 eh->dyn_relocs = NULL;
65f38f15 7512 }
f4656909 7513 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7514 {
7515 /* For the non-shared case, discard space for relocs against
7516 symbols which turn out to need copy relocs or are not
7517 dynamic. */
7518
f5385ebf
AM		 7519 if (!h->non_got_ref
7520 && h->def_dynamic
7521 && !h->def_regular)
65f38f15
AM		 7522 {
7523 /* Make sure this symbol is output as a dynamic symbol.
7524 Undefined weak syms won't yet be marked as dynamic. */
7525 if (h->dynindx == -1
f5385ebf 7526 && !h->forced_local)
65f38f15 7527 {
c152c796 7528 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7529 return FALSE;
65f38f15
AM		 7530 }
7531
7532 /* If that succeeded, we know we'll be keeping all the
7533 relocs. */
7534 if (h->dynindx != -1)
7535 goto keep;
7536 }
7537
7538 eh->dyn_relocs = NULL;
7539
ec338859 7540 keep: ;
65f38f15
AM		 7541 }
7542
7543 /* Finally, allocate space. */
7544 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7545 {
7546 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7547 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7548 }
7549
b34976b6 7550 return TRUE;
65f38f15
AM		 7551}
7552
7553/* Find any dynamic relocs that apply to read-only sections. */
7554
b34976b6 7555static bfd_boolean
4ce794b7 7556readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7557{
7558 struct ppc_link_hash_entry *eh;
7559 struct ppc_dyn_relocs *p;
7560
e92d460e
AM		 7561 if (h->root.type == bfd_link_hash_warning)
7562 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7563
65f38f15
AM		 7564 eh = (struct ppc_link_hash_entry *) h;
7565 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7566 {
7567 asection *s = p->sec->output_section;
7568
7569 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7570 {
4ce794b7 7571 struct bfd_link_info *info = inf;
65f38f15
AM		 7572
7573 info->flags |= DF_TEXTREL;
7574
7575 /* Not an error, just cut short the traversal. */
b34976b6 7576 return FALSE;
65f38f15
AM		 7577 }
7578 }
b34976b6 7579 return TRUE;
65f38f15
AM		 7580}
7581
7582/* Set the sizes of the dynamic sections. */
7583
b34976b6 7584static bfd_boolean
4ce794b7
AM		 7585ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7586 struct bfd_link_info *info)
65f38f15
AM		 7587{
7588 struct ppc_link_hash_table *htab;
7589 bfd *dynobj;
7590 asection *s;
b34976b6 7591 bfd_boolean relocs;
65f38f15
AM		 7592 bfd *ibfd;
7593
7594 htab = ppc_hash_table (info);
7595 dynobj = htab->elf.dynobj;
7596 if (dynobj == NULL)
7597 abort ();
7598
7599 if (htab->elf.dynamic_sections_created)
7600 {
7601 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7602 if (info->executable)
65f38f15
AM		 7603 {
7604 s = bfd_get_section_by_name (dynobj, ".interp");
7605 if (s == NULL)
7606 abort ();
eea6121a 7607 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7608 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7609 }
7610 }
7611
7612 /* Set up .got offsets for local syms, and space for local dynamic
7613 relocs. */
7614 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7615 {
411e1bfb
AM		 7616 struct got_entry **lgot_ents;
7617 struct got_entry **end_lgot_ents;
e7b938ca 7618 char *lgot_masks;
65f38f15
AM		 7619 bfd_size_type locsymcount;
7620 Elf_Internal_Shdr *symtab_hdr;
7621 asection *srel;
7622
ee75fd95 7623 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7624 continue;
7625
e717da7e
AM		 7626 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7627 {
7628 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7629 ppc64_tlsld_got (ibfd)->offset = s->size;
7630 s->size += 16;
e717da7e
AM		 7631 if (info->shared)
7632 {
7633 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7634 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7635 }
7636 }
7637 else
7638 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7639
65f38f15
AM		 7640 for (s = ibfd->sections; s != NULL; s = s->next)
7641 {
ec338859 7642 struct ppc_dyn_relocs *p;
65f38f15 7643
ec338859
AM		 7644 for (p = *((struct ppc_dyn_relocs **)
7645 &elf_section_data (s)->local_dynrel);
7646 p != NULL;
7647 p = p->next)
65f38f15 7648 {
ec338859
AM		 7649 if (!bfd_is_abs_section (p->sec)
7650 && bfd_is_abs_section (p->sec->output_section))
7651 {
7652 /* Input section has been discarded, either because
7653 it is a copy of a linkonce section or due to
7654 linker script /DISCARD/, so we'll be discarding
7655 the relocs too. */
7656 }
248866a8 7657 else if (p->count != 0)
ec338859
AM		 7658 {
7659 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7660 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7661 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7662 info->flags |= DF_TEXTREL;
ec338859 7663 }
65f38f15
AM		 7664 }
7665 }
7666
411e1bfb
AM		 7667 lgot_ents = elf_local_got_ents (ibfd);
7668 if (!lgot_ents)
65f38f15
AM		 7669 continue;
7670
7671 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7672 locsymcount = symtab_hdr->sh_info;
411e1bfb 7673 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7674 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7675 s = ppc64_elf_tdata (ibfd)->got;
7676 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7677 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7678 {
411e1bfb
AM		 7679 struct got_entry *ent;
7680
7681 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7682 if (ent->got.refcount > 0)
7683 {
e7b938ca 7684 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7685 {
e717da7e 7686 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7687 {
eea6121a
AM		 7688 ppc64_tlsld_got (ibfd)->offset = s->size;
7689 s->size += 16;
411e1bfb 7690 if (info->shared)
eea6121a 7691 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7692 }
e717da7e 7693 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7694 }
7695 else
7696 {
eea6121a 7697 ent->got.offset = s->size;
e7b938ca 7698 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7699 {
eea6121a 7700 s->size += 16;
411e1bfb 7701 if (info->shared)
eea6121a 7702 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7703 }
7704 else
7705 {
eea6121a 7706 s->size += 8;
411e1bfb 7707 if (info->shared)
eea6121a 7708 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7709 }
7710 }
7711 }
7712 else
7713 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7714 }
7715 }
7716
7717 /* Allocate global sym .plt and .got entries, and space for global
7718 sym dynamic relocs. */
4ce794b7 7719 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7720
7721 /* We now have determined the sizes of the various dynamic sections.
7722 Allocate memory for them. */
b34976b6 7723 relocs = FALSE;
65f38f15
AM		 7724 for (s = dynobj->sections; s != NULL; s = s->next)
7725 {
7726 if ((s->flags & SEC_LINKER_CREATED) == 0)
7727 continue;
7728
4ce794b7 7729 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7730 /* These haven't been allocated yet; don't strip. */
7731 continue;
e717da7e
AM		 7732 else if (s == htab->got
7733 || s == htab->plt
4ce794b7 7734 || s == htab->glink)
65f38f15
AM		 7735 {
7736 /* Strip this section if we don't need it; see the
7737 comment below. */
5bd4f169 7738 }
65f38f15 7739 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7740 {
eea6121a 7741 if (s->size == 0)
5bd4f169
AM		 7742 {
7743 /* If we don't need this section, strip it from the
7744 output file. This is mostly to handle .rela.bss and
7745 .rela.plt. We must create both sections in
7746 create_dynamic_sections, because they must be created
7747 before the linker maps input sections to output
7748 sections. The linker does that before
7749 adjust_dynamic_symbol is called, and it is that
7750 function which decides whether anything needs to go
7751 into these sections. */
5bd4f169
AM		 7752 }
7753 else
7754 {
4ce794b7 7755 if (s != htab->relplt)
b34976b6 7756 relocs = TRUE;
5bd4f169
AM		 7757
7758 /* We use the reloc_count field as a counter if we need
7759 to copy relocs into the output file. */
7760 s->reloc_count = 0;
7761 }
7762 }
65f38f15 7763 else
5bd4f169
AM		 7764 {
7765 /* It's not one of our sections, so don't allocate space. */
7766 continue;
7767 }
7768
eea6121a 7769 if (s->size == 0)
5bd4f169 7770 {
8423293d 7771 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 7772 continue;
7773 }
7774
5f333394 7775 /* .plt is in the bss section. We don't initialise it. */
680a3378 7776 if (s == htab->plt)
5f333394
AM		 7777 continue;
7778
65f38f15
AM		 7779 /* Allocate memory for the section contents. We use bfd_zalloc
7780 here in case unused entries are not reclaimed before the
7781 section's contents are written out. This should not happen,
411e1bfb
AM		 7782 but this way if it does we get a R_PPC64_NONE reloc in .rela
7783 sections instead of garbage.
7784 We also rely on the section contents being zero when writing
7785 the GOT. */
eea6121a 7786 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7787 if (s->contents == NULL)
b34976b6 7788 return FALSE;
5bd4f169
AM		 7789 }
7790
e717da7e
AM		 7791 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7792 {
ee75fd95 7793 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7794 continue;
7795
e717da7e
AM		 7796 s = ppc64_elf_tdata (ibfd)->got;
7797 if (s != NULL && s != htab->got)
7798 {
eea6121a 7799 if (s->size == 0)
8423293d 7800 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7801 else
7802 {
eea6121a 7803 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7804 if (s->contents == NULL)
7805 return FALSE;
7806 }
7807 }
7808 s = ppc64_elf_tdata (ibfd)->relgot;
7809 if (s != NULL)
7810 {
eea6121a 7811 if (s->size == 0)
8423293d 7812 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 7813 else
7814 {
eea6121a 7815 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7816 if (s->contents == NULL)
7817 return FALSE;
7818 relocs = TRUE;
7819 s->reloc_count = 0;
7820 }
7821 }
7822 }
7823
e86ce104 7824 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7825 {
7826 /* Add some entries to the .dynamic section. We fill in the
7827 values later, in ppc64_elf_finish_dynamic_sections, but we
7828 must add the entries now so that we get the correct size for
7829 the .dynamic section. The DT_DEBUG entry is filled in by the
7830 dynamic linker and used by the debugger. */
dc810e39 7831#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7832 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7833
36af4a4e 7834 if (info->executable)
5bd4f169 7835 {
dc810e39 7836 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7837 return FALSE;
5bd4f169
AM		 7838 }
7839
eea6121a 7840 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7841 {
dc810e39
AM		 7842 if (!add_dynamic_entry (DT_PLTGOT, 0)
7843 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7844 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7845 || !add_dynamic_entry (DT_JMPREL, 0)
7846 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7847 return FALSE;
5bd4f169
AM		 7848 }
7849
19397422
AM		 7850 if (NO_OPD_RELOCS)
7851 {
7852 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7853 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7854 return FALSE;
19397422
AM		 7855 }
7856
5bd4f169
AM		 7857 if (relocs)
7858 {
dc810e39
AM		 7859 if (!add_dynamic_entry (DT_RELA, 0)
7860 || !add_dynamic_entry (DT_RELASZ, 0)
7861 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7862 return FALSE;
5bd4f169 7863
65f38f15
AM		 7864 /* If any dynamic relocs apply to a read-only section,
7865 then we need a DT_TEXTREL entry. */
248866a8 7866 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7867 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7868
65f38f15 7869 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7870 {
65f38f15 7871 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7872 return FALSE;
5bd4f169 7873 }
5bd4f169 7874 }
5bd4f169 7875 }
65f38f15 7876#undef add_dynamic_entry
5bd4f169 7877
b34976b6 7878 return TRUE;
5bd4f169
AM		 7879}
7880
721956f4 7881/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7882
4ce794b7
AM		 7883static inline enum ppc_stub_type
7884ppc_type_of_stub (asection *input_sec,
7885 const Elf_Internal_Rela *rel,
7886 struct ppc_link_hash_entry **hash,
7887 bfd_vma destination)
5bd4f169 7888{
721956f4
AM		 7889 struct ppc_link_hash_entry *h = *hash;
7890 bfd_vma location;
7891 bfd_vma branch_offset;
7892 bfd_vma max_branch_offset;
4ce794b7 7893 enum elf_ppc64_reloc_type r_type;
5bd4f169 7894
721956f4
AM		 7895 if (h != NULL)
7896 {
7897 if (h->oh != NULL
8387904d
AM		 7898 && h->oh->is_func_descriptor)
7899 h = h->oh;
7900
7901 if (h->elf.dynindx != -1)
5bd4f169 7902 {
411e1bfb 7903 struct plt_entry *ent;
8387904d
AM		 7904
7905 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7906 if (ent->addend == rel->r_addend
7907 && ent->plt.offset != (bfd_vma) -1)
7908 {
8387904d 7909 *hash = h;
411e1bfb
AM		 7910 return ppc_stub_plt_call;
7911 }
5bd4f169
AM		 7912 }
7913
ee7de3e6
AM		 7914 if (!(h->elf.root.type == bfd_link_hash_defined
7915 || h->elf.root.type == bfd_link_hash_defweak)
7916 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7917 return ppc_stub_none;
5d1634d7 7918 }
5d1634d7 7919
721956f4
AM		 7920 /* Determine where the call point is. */
7921 location = (input_sec->output_offset
7922 + input_sec->output_section->vma
7923 + rel->r_offset);
5d1634d7 7924
721956f4
AM		 7925 branch_offset = destination - location;
7926 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7927
721956f4
AM		 7928 /* Determine if a long branch stub is needed. */
7929 max_branch_offset = 1 << 25;
4ce794b7 7930 if (r_type != R_PPC64_REL24)
721956f4 7931 max_branch_offset = 1 << 15;
5d1634d7 7932
721956f4
AM		 7933 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7934 /* We need a stub. Figure out whether a long_branch or plt_branch
7935 is needed later. */
7936 return ppc_stub_long_branch;
5d1634d7 7937
721956f4 7938 return ppc_stub_none;
5d1634d7
AM		 7939}
7940
7941/* Build a .plt call stub. */
7942
4ce794b7
AM		 7943static inline bfd_byte *
7944build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7945{
7946#define PPC_LO(v) ((v) & 0xffff)
7947#define PPC_HI(v) (((v) >> 16) & 0xffff)
7948#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7949
5d1634d7 7950 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7951 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7952 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7953 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7954 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7955 offset += 8;
7956 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7957 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7958 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7959 offset += 8;
7960 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7961 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7962 bfd_put_32 (obfd, BCTR, p), p += 4;
7963 return p;
7964}
7965
b34976b6 7966static bfd_boolean
4ce794b7 7967ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7968{
721956f4
AM		 7969 struct ppc_stub_hash_entry *stub_entry;
7970 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7971 struct bfd_link_info *info;
7972 struct ppc_link_hash_table *htab;
721956f4
AM		 7973 bfd_byte *loc;
7974 bfd_byte *p;
7975 unsigned int indx;
411e1bfb 7976 struct plt_entry *ent;
ee75fd95 7977 bfd_vma dest, off;
721956f4 7978 int size;
5d1634d7 7979
721956f4
AM		 7980 /* Massage our args to the form they really have. */
7981 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7982 info = in_arg;
5d1634d7 7983
5d1634d7
AM		 7984 htab = ppc_hash_table (info);
7985
721956f4 7986 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7987 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7988 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7989
4ce794b7 7990 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7991 switch (stub_entry->stub_type)
5d1634d7 7992 {
721956f4 7993 case ppc_stub_long_branch:
ad8e1ba5 7994 case ppc_stub_long_branch_r2off:
721956f4 7995 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7996 off = dest = (stub_entry->target_value
7997 + stub_entry->target_section->output_offset
7998 + stub_entry->target_section->output_section->vma);
5d1634d7 7999
721956f4
AM		 8000 /* And this is where we are coming from. */
8001 off -= (stub_entry->stub_offset
97b639ba
AM		 8002 + stub_entry->stub_sec->output_offset
8003 + stub_entry->stub_sec->output_section->vma);
e86ce104 8004
ad8e1ba5
AM		 8005 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8006 size = 4;
8007 else
8008 {
8009 bfd_vma r2off;
8010
8011 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8012 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8013 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8014 loc += 4;
97b639ba 8015 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8016 loc += 4;
97b639ba 8017 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8018 loc += 4;
8019 off -= 12;
8020 size = 16;
8021 }
97b639ba 8022 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 8023
8024 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 8025
8026 if (info->emitrelocations)
8027 {
8028 Elf_Internal_Rela *relocs, *r;
8029 struct bfd_elf_section_data *elfsec_data;
8030
8031 elfsec_data = elf_section_data (stub_entry->stub_sec);
8032 relocs = elfsec_data->relocs;
8033 if (relocs == NULL)
8034 {
8035 bfd_size_type relsize;
8036 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8037 relocs = bfd_alloc (htab->stub_bfd, relsize);
8038 if (relocs == NULL)
8039 return FALSE;
8040 elfsec_data->relocs = relocs;
8041 elfsec_data->rel_hdr.sh_size = relsize;
8042 elfsec_data->rel_hdr.sh_entsize = 24;
8043 stub_entry->stub_sec->reloc_count = 0;
8044 }
8045 r = relocs + stub_entry->stub_sec->reloc_count;
8046 stub_entry->stub_sec->reloc_count += 1;
8047 r->r_offset = loc - stub_entry->stub_sec->contents;
8048 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8049 r->r_addend = dest;
8050 if (stub_entry->h != NULL)
8051 {
8052 struct elf_link_hash_entry **hashes;
8053 unsigned long symndx;
8054 struct ppc_link_hash_entry *h;
8055
8056 hashes = elf_sym_hashes (htab->stub_bfd);
8057 if (hashes == NULL)
8058 {
8059 bfd_size_type hsize;
8060
8061 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8062 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8063 if (hashes == NULL)
8064 return FALSE;
8065 elf_sym_hashes (htab->stub_bfd) = hashes;
8066 htab->stub_globals = 1;
8067 }
8068 symndx = htab->stub_globals++;
8069 h = stub_entry->h;
8070 hashes[symndx] = &h->elf;
8071 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8072 if (h->oh != NULL && h->oh->is_func)
8073 h = h->oh;
8074 if (h->elf.root.u.def.section != stub_entry->target_section)
8075 /* H is an opd symbol. The addend must be zero. */
8076 r->r_addend = 0;
8077 else
8078 {
8079 off = (h->elf.root.u.def.value
8080 + h->elf.root.u.def.section->output_offset
8081 + h->elf.root.u.def.section->output_section->vma);
8082 r->r_addend -= off;
8083 }
8084 }
8085 }
721956f4 8086 break;
e86ce104 8087
721956f4 8088 case ppc_stub_plt_branch:
ad8e1ba5 8089 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8090 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8091 stub_entry->root.string + 9,
b34976b6 8092 FALSE, FALSE);
721956f4
AM		 8093 if (br_entry == NULL)
8094 {
8095 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8096 stub_entry->root.string + 9);
b34976b6
AM		 8097 htab->stub_error = TRUE;
8098 return FALSE;
721956f4
AM		 8099 }
8100
8101 off = (stub_entry->target_value
8102 + stub_entry->target_section->output_offset
8103 + stub_entry->target_section->output_section->vma);
8104
4ce794b7
AM		 8105 bfd_put_64 (htab->brlt->owner, off,
8106 htab->brlt->contents + br_entry->offset);
721956f4 8107
ee75fd95 8108 if (htab->relbrlt != NULL)
721956f4
AM		 8109 {
8110 /* Create a reloc for the branch lookup table entry. */
8111 Elf_Internal_Rela rela;
ad8e1ba5 8112 bfd_byte *rl;
5d1634d7 8113
721956f4 8114 rela.r_offset = (br_entry->offset
4ce794b7
AM		 8115 + htab->brlt->output_offset
8116 + htab->brlt->output_section->vma);
721956f4
AM		 8117 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8118 rela.r_addend = off;
8119
4ce794b7
AM		 8120 rl = htab->relbrlt->contents;
8121 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8122 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 8123 }
8124
8125 off = (br_entry->offset
4ce794b7
AM		 8126 + htab->brlt->output_offset
8127 + htab->brlt->output_section->vma
8128 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8129 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8130
ad8e1ba5 8131 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8132 {
8133 (*_bfd_error_handler)
e86ce104 8134 (_("linkage table error against `%s'"),
721956f4 8135 stub_entry->root.string);
5d1634d7 8136 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8137 htab->stub_error = TRUE;
8138 return FALSE;
5d1634d7 8139 }
41bd81ab 8140
721956f4 8141 indx = off;
ad8e1ba5
AM		 8142 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8143 {
97b639ba 8144 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8145 loc += 4;
97b639ba 8146 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 8147 size = 16;
8148 }
8149 else
8150 {
8151 bfd_vma r2off;
8152
8153 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8154 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8155 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8156 loc += 4;
97b639ba 8157 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8158 loc += 4;
97b639ba 8159 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8160 loc += 4;
97b639ba 8161 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8162 loc += 4;
97b639ba 8163 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8164 size = 28;
8165 }
8166 loc += 4;
97b639ba 8167 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8168 loc += 4;
97b639ba 8169 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8170 break;
5d1634d7 8171
721956f4 8172 case ppc_stub_plt_call:
c862ae31
AM		 8173 /* Do the best we can for shared libraries built without
8174 exporting ".foo" for each "foo". This can happen when symbol
8175 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8176 if (stub_entry->h->oh != NULL
8177 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8178 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8179 {
8180 /* Point the symbol at the stub. There may be multiple stubs,
8181 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8182 defined somewhere. Maybe defining the symbol in the stub
8183 section is a silly idea. If we didn't do this, htab->top_id
8184 could disappear. */
34814b9f
AM		 8185 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8186 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8187 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8188 }
8189
721956f4 8190 /* Now build the stub. */
411e1bfb
AM		 8191 off = (bfd_vma) -1;
8192 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8193 if (ent->addend == stub_entry->addend)
8194 {
8195 off = ent->plt.offset;
8196 break;
8197 }
721956f4
AM		 8198 if (off >= (bfd_vma) -2)
8199 abort ();
8200
8201 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8202 off += (htab->plt->output_offset
8203 + htab->plt->output_section->vma
8204 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8205 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8206
ad8e1ba5 8207 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8208 {
8209 (*_bfd_error_handler)
8210 (_("linkage table error against `%s'"),
8211 stub_entry->h->elf.root.root.string);
8212 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8213 htab->stub_error = TRUE;
8214 return FALSE;
721956f4
AM		 8215 }
8216
97b639ba 8217 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8218 size = p - loc;
8219 break;
8220
8221 default:
8222 BFD_FAIL ();
b34976b6 8223 return FALSE;
721956f4
AM		 8224 }
8225
eea6121a 8226 stub_entry->stub_sec->size += size;
97b639ba 8227
ee75fd95 8228 if (htab->emit_stub_syms)
97b639ba
AM		 8229 {
8230 struct elf_link_hash_entry *h;
ee75fd95
AM		 8231 size_t len1, len2;
8232 char *name;
8233 const char *const stub_str[] = { "long_branch",
8234 "long_branch_r2off",
8235 "plt_branch",
8236 "plt_branch_r2off",
8237 "plt_call" };
8238
8239 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8240 len2 = strlen (stub_entry->root.string);
8241 name = bfd_malloc (len1 + len2 + 2);
8242 if (name == NULL)
8243 return FALSE;
8244 memcpy (name, stub_entry->root.string, 9);
8245 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8246 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8247 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8248 if (h == NULL)
8249 return FALSE;
8250 if (h->root.type == bfd_link_hash_new)
8251 {
8252 h->root.type = bfd_link_hash_defined;
8253 h->root.u.def.section = stub_entry->stub_sec;
8254 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8255 h->ref_regular = 1;
8256 h->def_regular = 1;
8257 h->ref_regular_nonweak = 1;
8258 h->forced_local = 1;
8259 h->non_elf = 0;
97b639ba
AM		 8260 }
8261 }
8262
b34976b6 8263 return TRUE;
721956f4
AM		 8264}
8265
8266/* As above, but don't actually build the stub. Just bump offset so
8267 we know stub section sizes, and select plt_branch stubs where
8268 long_branch stubs won't do. */
8269
b34976b6 8270static bfd_boolean
4ce794b7 8271ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8272{
8273 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8274 struct bfd_link_info *info;
721956f4
AM		 8275 struct ppc_link_hash_table *htab;
8276 bfd_vma off;
8277 int size;
8278
8279 /* Massage our args to the form they really have. */
8280 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8281 info = in_arg;
8282
8283 htab = ppc_hash_table (info);
721956f4
AM		 8284
8285 if (stub_entry->stub_type == ppc_stub_plt_call)
8286 {
411e1bfb 8287 struct plt_entry *ent;
58ac9f71 8288 off = (bfd_vma) -1;
411e1bfb
AM		 8289 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8290 if (ent->addend == stub_entry->addend)
8291 {
8292 off = ent->plt.offset & ~(bfd_vma) 1;
8293 break;
8294 }
58ac9f71 8295 if (off >= (bfd_vma) -2)
411e1bfb 8296 abort ();
4ce794b7
AM		 8297 off += (htab->plt->output_offset
8298 + htab->plt->output_section->vma
8299 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8300 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8301
ad8e1ba5 8302 size = PLT_CALL_STUB_SIZE;
4ce794b7 8303 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8304 size += 4;
8305 }
8306 else
8307 {
ad8e1ba5
AM		 8308 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8309 variants. */
721956f4
AM		 8310 off = (stub_entry->target_value
8311 + stub_entry->target_section->output_offset
8312 + stub_entry->target_section->output_section->vma);
eea6121a 8313 off -= (stub_entry->stub_sec->size
721956f4
AM		 8314 + stub_entry->stub_sec->output_offset
8315 + stub_entry->stub_sec->output_section->vma);
8316
ad8e1ba5
AM		 8317 /* Reset the stub type from the plt variant in case we now
8318 can reach with a shorter stub. */
8319 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8320 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8321
8322 size = 4;
8323 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8324 {
8325 off -= 12;
8326 size = 16;
8327 }
8328
8329 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8330 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8331 {
8332 struct ppc_branch_hash_entry *br_entry;
8333
8334 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8335 stub_entry->root.string + 9,
b34976b6 8336 TRUE, FALSE);
721956f4
AM		 8337 if (br_entry == NULL)
8338 {
8339 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8340 stub_entry->root.string + 9);
b34976b6
AM		 8341 htab->stub_error = TRUE;
8342 return FALSE;
721956f4
AM		 8343 }
8344
8345 if (br_entry->iter != htab->stub_iteration)
8346 {
8347 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8348 br_entry->offset = htab->brlt->size;
8349 htab->brlt->size += 8;
63bc6f6c 8350
ee75fd95 8351 if (htab->relbrlt != NULL)
eea6121a 8352 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8353 }
ad8e1ba5
AM		 8354
8355 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8356 size = 16;
ad8e1ba5
AM		 8357 if (stub_entry->stub_type != ppc_stub_plt_branch)
8358 size = 28;
721956f4 8359 }
ee75fd95
AM		 8360
8361 if (info->emitrelocations
8362 && (stub_entry->stub_type == ppc_stub_long_branch
8363 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8364 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8365 }
8366
eea6121a 8367 stub_entry->stub_sec->size += size;
b34976b6 8368 return TRUE;
721956f4
AM		 8369}
8370
8371/* Set up various things so that we can make a list of input sections
8372 for each output section included in the link. Returns -1 on error,
cedb70c5 8373 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8374
8375int
4c52953f
AM		 8376ppc64_elf_setup_section_lists (bfd *output_bfd,
8377 struct bfd_link_info *info,
8378 int no_multi_toc)
721956f4
AM		 8379{
8380 bfd *input_bfd;
734b6cf9 8381 int top_id, top_index, id;
721956f4 8382 asection *section;
734b6cf9 8383 asection **input_list;
721956f4
AM		 8384 bfd_size_type amt;
8385 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8386
4c52953f
AM		 8387 htab->no_multi_toc = no_multi_toc;
8388
4ce794b7 8389 if (htab->brlt == NULL)
721956f4
AM		 8390 return 0;
8391
1e2f5b6e 8392 /* Find the top input section id. */
3d6f9012 8393 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8394 input_bfd != NULL;
8395 input_bfd = input_bfd->link_next)
8396 {
721956f4
AM		 8397 for (section = input_bfd->sections;
8398 section != NULL;
8399 section = section->next)
8400 {
8401 if (top_id < section->id)
8402 top_id = section->id;
8403 }
8404 }
721956f4 8405
8f3bab57 8406 htab->top_id = top_id;
721956f4 8407 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8408 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8409 if (htab->stub_group == NULL)
8410 return -1;
8411
3d6f9012
AM		 8412 /* Set toc_off for com, und, abs and ind sections. */
8413 for (id = 0; id < 3; id++)
8414 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8415
3d6f9012 8416 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8417
8418 /* We can't use output_bfd->section_count here to find the top output
8419 section index as some sections may have been removed, and
8423293d 8420 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 8421 for (section = output_bfd->sections, top_index = 0;
8422 section != NULL;
8423 section = section->next)
8424 {
8425 if (top_index < section->index)
8426 top_index = section->index;
8427 }
8428
8429 htab->top_index = top_index;
8430 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8431 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8432 htab->input_list = input_list;
8433 if (input_list == NULL)
8434 return -1;
8435
721956f4
AM		 8436 return 1;
8437}
8438
e717da7e
AM		 8439/* The linker repeatedly calls this function for each TOC input section
8440 and linker generated GOT section. Group input bfds such that the toc
8441 within a group is less than 64k in size. Will break with cute linker
8442 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8443
8444void
4ce794b7 8445ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8446{
8447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8448
4c52953f
AM		 8449 if (!htab->no_multi_toc)
8450 {
8451 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8452 bfd_vma off = addr - htab->toc_curr;
8453
8454 if (off + isec->size > 0x10000)
8455 htab->toc_curr = addr;
99877b66 8456
4c52953f
AM		 8457 elf_gp (isec->owner) = (htab->toc_curr
8458 - elf_gp (isec->output_section->owner)
8459 + TOC_BASE_OFF);
8460 }
ad8e1ba5
AM		 8461}
8462
8463/* Called after the last call to the above function. */
8464
8465void
4c52953f 8466ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8467{
8468 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8469
4c52953f
AM		 8470 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8471
ad8e1ba5
AM		 8472 /* toc_curr tracks the TOC offset used for code sections below in
8473 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8474 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8475}
8476
9b5ecbd0
AM		 8477/* No toc references were found in ISEC. If the code in ISEC makes no
8478 calls, then there's no need to use toc adjusting stubs when branching
8479 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8480 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8481 needed, and 2 if a cyclical call-graph was found but no other reason
8482 for a stub was detected. If called from the top level, a return of
8483 2 means the same as a return of 0. */
9b5ecbd0
AM		 8484
8485static int
4ce794b7 8486toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8487{
4c52953f
AM		 8488 Elf_Internal_Rela *relstart, *rel;
8489 Elf_Internal_Sym *local_syms;
9b5ecbd0 8490 int ret;
4c52953f 8491 struct ppc_link_hash_table *htab;
9b5ecbd0 8492
772119ce
AM		 8493 /* We know none of our code bearing sections will need toc stubs. */
8494 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8495 return 0;
8496
eea6121a 8497 if (isec->size == 0)
082c50f8
AM		 8498 return 0;
8499
4c52953f
AM		 8500 if (isec->output_section == NULL)
8501 return 0;
8502
9b5ecbd0
AM		 8503 /* Hack for linux kernel. .fixup contains branches, but only back to
8504 the function that hit an exception. */
4c52953f
AM		 8505 if (strcmp (isec->name, ".fixup") == 0)
8506 return 0;
9b5ecbd0 8507
4c52953f
AM		 8508 if (isec->reloc_count == 0)
8509 return 0;
8510
8511 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8512 info->keep_memory);
8513 if (relstart == NULL)
8514 return -1;
8515
8516 /* Look for branches to outside of this section. */
8517 local_syms = NULL;
8518 ret = 0;
8519 htab = ppc_hash_table (info);
8520 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8521 {
4c52953f
AM		 8522 enum elf_ppc64_reloc_type r_type;
8523 unsigned long r_symndx;
8524 struct elf_link_hash_entry *h;
8525 Elf_Internal_Sym *sym;
8526 asection *sym_sec;
8527 long *opd_adjust;
8528 bfd_vma sym_value;
8529 bfd_vma dest;
8530
8531 r_type = ELF64_R_TYPE (rel->r_info);
8532 if (r_type != R_PPC64_REL24
8533 && r_type != R_PPC64_REL14
8534 && r_type != R_PPC64_REL14_BRTAKEN
8535 && r_type != R_PPC64_REL14_BRNTAKEN)
8536 continue;
8537
8538 r_symndx = ELF64_R_SYM (rel->r_info);
8539 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8540 isec->owner))
9b5ecbd0 8541 {
4c52953f
AM		 8542 ret = -1;
8543 break;
9b5ecbd0 8544 }
9b5ecbd0 8545
2917689a
AM		 8546 /* Calls to dynamic lib functions go through a plt call stub
8547 that uses r2. Branches to undefined symbols might be a call
8548 using old-style dot symbols that can be satisfied by a plt
8549 call into a new-style dynamic library. */
4c52953f 8550 if (sym_sec == NULL)
2917689a
AM		 8551 {
8552 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8553 if (eh != NULL
8554 && eh->oh != NULL
8555 && eh->oh->elf.plt.plist != NULL)
8556 {
8557 ret = 1;
8558 break;
8559 }
4c52953f 8560
2917689a
AM		 8561 /* Ignore other undefined symbols. */
8562 continue;
8563 }
8564
8565 /* Assume branches to other sections not included in the link need
8566 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8567 if (sym_sec->output_section == NULL)
8568 {
8569 ret = 1;
8570 break;
8571 }
8572
8573 if (h == NULL)
8574 sym_value = sym->st_value;
8575 else
8576 {
8577 if (h->root.type != bfd_link_hash_defined
8578 && h->root.type != bfd_link_hash_defweak)
8579 abort ();
8580 sym_value = h->root.u.def.value;
8581 }
8582 sym_value += rel->r_addend;
8583
8584 /* If this branch reloc uses an opd sym, find the code section. */
8585 opd_adjust = get_opd_info (sym_sec);
8586 if (opd_adjust != NULL)
8587 {
4c52953f
AM		 8588 if (h == NULL)
8589 {
8590 long adjust;
8591
8592 adjust = opd_adjust[sym->st_value / 8];
8593 if (adjust == -1)
8594 /* Assume deleted functions won't ever be called. */
8595 continue;
8596 sym_value += adjust;
8597 }
8598
8599 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8600 if (dest == (bfd_vma) -1)
8601 continue;
8602 }
8603 else
8604 dest = (sym_value
8605 + sym_sec->output_offset
8606 + sym_sec->output_section->vma);
8607
8608 /* Ignore branch to self. */
8609 if (sym_sec == isec)
8610 continue;
8611
8612 /* If the called function uses the toc, we need a stub. */
8613 if (sym_sec->has_toc_reloc
8614 || sym_sec->makes_toc_func_call)
8615 {
8616 ret = 1;
8617 break;
8618 }
8619
8620 /* Assume any branch that needs a long branch stub might in fact
8621 need a plt_branch stub. A plt_branch stub uses r2. */
8622 else if (dest - (isec->output_offset
8623 + isec->output_section->vma
8624 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8625 {
8626 ret = 1;
8627 break;
8628 }
4c52953f
AM		 8629
8630 /* If calling back to a section in the process of being tested, we
8631 can't say for sure that no toc adjusting stubs are needed, so
8632 don't return zero. */
8633 else if (sym_sec->call_check_in_progress)
8634 ret = 2;
8635
8636 /* Branches to another section that itself doesn't have any TOC
8637 references are OK. Recursively call ourselves to check. */
8638 else if (sym_sec->id <= htab->top_id
8639 && htab->stub_group[sym_sec->id].toc_off == 0)
8640 {
8641 int recur;
8642
8643 /* Mark current section as indeterminate, so that other
8644 sections that call back to current won't be marked as
8645 known. */
8646 isec->call_check_in_progress = 1;
8647 recur = toc_adjusting_stub_needed (info, sym_sec);
8648 isec->call_check_in_progress = 0;
8649
8650 if (recur < 0)
8651 {
8652 /* An error. Exit. */
8653 ret = -1;
8654 break;
8655 }
8656 else if (recur <= 1)
8657 {
8658 /* Known result. Mark as checked and set section flag. */
8659 htab->stub_group[sym_sec->id].toc_off = 1;
8660 if (recur != 0)
8661 {
8662 sym_sec->makes_toc_func_call = 1;
8663 ret = 1;
8664 break;
8665 }
8666 }
8667 else
8668 {
8669 /* Unknown result. Continue checking. */
8670 ret = 2;
8671 }
8672 }
9b5ecbd0
AM		 8673 }
8674
4c52953f
AM		 8675 if (local_syms != NULL
8676 && (elf_tdata (isec->owner)->symtab_hdr.contents
8677 != (unsigned char *) local_syms))
8678 free (local_syms);
8679 if (elf_section_data (isec)->relocs != relstart)
8680 free (relstart);
8681
9b5ecbd0
AM		 8682 return ret;
8683}
8684
721956f4
AM		 8685/* The linker repeatedly calls this function for each input section,
8686 in the order that input sections are linked into output sections.
8687 Build lists of input sections to determine groupings between which
8688 we may insert linker stubs. */
8689
9b5ecbd0 8690bfd_boolean
4ce794b7 8691ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8692{
8693 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8694
734b6cf9
AM		 8695 if ((isec->output_section->flags & SEC_CODE) != 0
8696 && isec->output_section->index <= htab->top_index)
721956f4 8697 {
734b6cf9 8698 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8699 /* Steal the link_sec pointer for our list. */
721956f4 8700#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8701 /* This happens to make the list in reverse order,
8702 which is what we want. */
734b6cf9
AM		 8703 PREV_SEC (isec) = *list;
8704 *list = isec;
721956f4 8705 }
ad8e1ba5 8706
4c52953f 8707 if (htab->multi_toc_needed)
9b5ecbd0 8708 {
4c52953f
AM		 8709 /* If a code section has a function that uses the TOC then we need
8710 to use the right TOC (obviously). Also, make sure that .opd gets
8711 the correct TOC value for R_PPC64_TOC relocs that don't have or
8712 can't find their function symbol (shouldn't ever happen now). */
8713 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8714 {
8715 if (elf_gp (isec->owner) != 0)
8716 htab->toc_curr = elf_gp (isec->owner);
8717 }
8718 else if (htab->stub_group[isec->id].toc_off == 0)
8719 {
8720 int ret = toc_adjusting_stub_needed (info, isec);
8721 if (ret < 0)
8722 return FALSE;
8723 else
8724 isec->makes_toc_func_call = ret & 1;
8725 }
9b5ecbd0 8726 }
ad8e1ba5
AM		 8727
8728 /* Functions that don't use the TOC can belong in any TOC group.
8729 Use the last TOC base. This happens to make _init and _fini
8730 pasting work. */
8731 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8732 return TRUE;
721956f4
AM		 8733}
8734
8735/* See whether we can group stub sections together. Grouping stub
8736 sections may result in fewer stubs. More importantly, we need to
8737 put all .init* and .fini* stubs at the beginning of the .init or
8738 .fini output sections respectively, because glibc splits the
8739 _init and _fini functions into multiple parts. Putting a stub in
8740 the middle of a function is not a good idea. */
8741
8742static void
4ce794b7
AM		 8743group_sections (struct ppc_link_hash_table *htab,
8744 bfd_size_type stub_group_size,
8745 bfd_boolean stubs_always_before_branch)
721956f4 8746{
734b6cf9
AM		 8747 asection **list = htab->input_list + htab->top_index;
8748 do
721956f4 8749 {
734b6cf9
AM		 8750 asection *tail = *list;
8751 while (tail != NULL)
721956f4 8752 {
734b6cf9
AM		 8753 asection *curr;
8754 asection *prev;
8755 bfd_size_type total;
8756 bfd_boolean big_sec;
8757 bfd_vma curr_toc;
8758
8759 curr = tail;
eea6121a 8760 total = tail->size;
734b6cf9
AM		 8761 big_sec = total >= stub_group_size;
8762 curr_toc = htab->stub_group[tail->id].toc_off;
8763
8764 while ((prev = PREV_SEC (curr)) != NULL
8765 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8766 < stub_group_size)
8767 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8768 curr = prev;
8769
8770 /* OK, the size from the start of CURR to the end is less
8771 than stub_group_size and thus can be handled by one stub
8772 section. (or the tail section is itself larger than
8773 stub_group_size, in which case we may be toast.) We
8774 should really be keeping track of the total size of stubs
8775 added here, as stubs contribute to the final output
8776 section size. That's a little tricky, and this way will
8777 only break if stubs added make the total size more than
8778 2^25, ie. for the default stub_group_size, if stubs total
8779 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8780 do
721956f4
AM		 8781 {
8782 prev = PREV_SEC (tail);
734b6cf9 8783 /* Set up this stub group. */
721956f4
AM		 8784 htab->stub_group[tail->id].link_sec = curr;
8785 }
734b6cf9
AM		 8786 while (tail != curr && (tail = prev) != NULL);
8787
8788 /* But wait, there's more! Input sections up to stub_group_size
8789 bytes before the stub section can be handled by it too.
8790 Don't do this if we have a really large section after the
8791 stubs, as adding more stubs increases the chance that
8792 branches may not reach into the stub section. */
8793 if (!stubs_always_before_branch && !big_sec)
8794 {
8795 total = 0;
8796 while (prev != NULL
8797 && ((total += tail->output_offset - prev->output_offset)
8798 < stub_group_size)
8799 && htab->stub_group[prev->id].toc_off == curr_toc)
8800 {
8801 tail = prev;
8802 prev = PREV_SEC (tail);
8803 htab->stub_group[tail->id].link_sec = curr;
8804 }
8805 }
8806 tail = prev;
721956f4
AM		 8807 }
8808 }
734b6cf9
AM		 8809 while (list-- != htab->input_list);
8810 free (htab->input_list);
721956f4
AM		 8811#undef PREV_SEC
8812}
8813
721956f4
AM		 8814/* Determine and set the size of the stub section for a final link.
8815
8816 The basic idea here is to examine all the relocations looking for
8817 PC-relative calls to a target that is unreachable with a "bl"
8818 instruction. */
8819
b34976b6 8820bfd_boolean
4ce794b7 8821ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8822 struct bfd_link_info *info,
8823 bfd_signed_vma group_size,
8824 asection *(*add_stub_section) (const char *, asection *),
8825 void (*layout_sections_again) (void))
721956f4
AM		 8826{
8827 bfd_size_type stub_group_size;
b34976b6 8828 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8829 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8830
8831 /* Stash our params away. */
721956f4
AM		 8832 htab->add_stub_section = add_stub_section;
8833 htab->layout_sections_again = layout_sections_again;
8834 stubs_always_before_branch = group_size < 0;
8835 if (group_size < 0)
8836 stub_group_size = -group_size;
8837 else
8838 stub_group_size = group_size;
8839 if (stub_group_size == 1)
8840 {
8841 /* Default values. */
58ac9f71
AM		 8842 if (stubs_always_before_branch)
8843 {
8844 stub_group_size = 0x1e00000;
8845 if (htab->has_14bit_branch)
8846 stub_group_size = 0x7800;
8847 }
8848 else
8849 {
8850 stub_group_size = 0x1c00000;
8851 if (htab->has_14bit_branch)
8852 stub_group_size = 0x7000;
8853 }
721956f4
AM		 8854 }
8855
8856 group_sections (htab, stub_group_size, stubs_always_before_branch);
8857
721956f4
AM		 8858 while (1)
8859 {
8860 bfd *input_bfd;
8861 unsigned int bfd_indx;
8862 asection *stub_sec;
b34976b6 8863 bfd_boolean stub_changed;
721956f4
AM		 8864
8865 htab->stub_iteration += 1;
b34976b6 8866 stub_changed = FALSE;
721956f4
AM		 8867
8868 for (input_bfd = info->input_bfds, bfd_indx = 0;
8869 input_bfd != NULL;
8870 input_bfd = input_bfd->link_next, bfd_indx++)
8871 {
8872 Elf_Internal_Shdr *symtab_hdr;
8873 asection *section;
6cdc0ccc 8874 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8875
8876 /* We'll need the symbol table in a second. */
8877 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8878 if (symtab_hdr->sh_info == 0)
8879 continue;
8880
721956f4
AM		 8881 /* Walk over each section attached to the input bfd. */
8882 for (section = input_bfd->sections;
8883 section != NULL;
8884 section = section->next)
8885 {
721956f4 8886 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8887
8888 /* If there aren't any relocs, then there's nothing more
8889 to do. */
8890 if ((section->flags & SEC_RELOC) == 0
8891 || section->reloc_count == 0)
8892 continue;
8893
8894 /* If this section is a link-once section that will be
8895 discarded, then don't create any stubs. */
8896 if (section->output_section == NULL
8897 || section->output_section->owner != output_bfd)
8898 continue;
8899
1e2f5b6e
AM		 8900 /* Get the relocs. */
8901 internal_relocs
4ce794b7 8902 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8903 info->keep_memory);
721956f4 8904 if (internal_relocs == NULL)
1e2f5b6e 8905 goto error_ret_free_local;
721956f4
AM		 8906
8907 /* Now examine each relocation. */
8908 irela = internal_relocs;
8909 irelaend = irela + section->reloc_count;
8910 for (; irela < irelaend; irela++)
8911 {
4ce794b7
AM		 8912 enum elf_ppc64_reloc_type r_type;
8913 unsigned int r_indx;
721956f4
AM		 8914 enum ppc_stub_type stub_type;
8915 struct ppc_stub_hash_entry *stub_entry;
8387904d 8916 asection *sym_sec, *code_sec;
721956f4
AM		 8917 bfd_vma sym_value;
8918 bfd_vma destination;
8843416a 8919 bfd_boolean ok_dest;
721956f4 8920 struct ppc_link_hash_entry *hash;
8387904d 8921 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8922 struct elf_link_hash_entry *h;
8923 Elf_Internal_Sym *sym;
721956f4
AM		 8924 char *stub_name;
8925 const asection *id_sec;
8387904d 8926 long *opd_adjust;
721956f4
AM		 8927
8928 r_type = ELF64_R_TYPE (irela->r_info);
8929 r_indx = ELF64_R_SYM (irela->r_info);
8930
4ce794b7 8931 if (r_type >= R_PPC64_max)
721956f4
AM		 8932 {
8933 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8934 goto error_ret_free_internal;
721956f4
AM		 8935 }
8936
8937 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8938 if (r_type != R_PPC64_REL24
8939 && r_type != R_PPC64_REL14
8940 && r_type != R_PPC64_REL14_BRTAKEN
8941 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8942 continue;
8943
8944 /* Now determine the call target, its name, value,
8945 section. */
411e1bfb
AM		 8946 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8947 r_indx, input_bfd))
8948 goto error_ret_free_internal;
8949 hash = (struct ppc_link_hash_entry *) h;
8950
8843416a 8951 ok_dest = FALSE;
8387904d 8952 fdh = NULL;
411e1bfb 8953 if (hash == NULL)
721956f4 8954 {
411e1bfb 8955 sym_value = sym->st_value;
8843416a 8956 ok_dest = TRUE;
721956f4
AM		 8957 }
8958 else
8959 {
411e1bfb 8960 sym_value = 0;
99877b66
AM		 8961 /* Recognise an old ABI func code entry sym, and
8962 use the func descriptor sym instead. */
ceb1f1ef 8963 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 8964 && (fdh = get_fdh (hash, htab)) != NULL)
8965 {
8387904d
AM		 8966 if (fdh->elf.root.type == bfd_link_hash_defined
8967 || fdh->elf.root.type == bfd_link_hash_defweak)
8968 {
8969 sym_sec = fdh->elf.root.u.def.section;
8970 sym_value = fdh->elf.root.u.def.value;
8971 if (sym_sec->output_section != NULL)
8972 ok_dest = TRUE;
8973 }
99877b66
AM		 8974 else
8975 fdh = NULL;
8387904d
AM		 8976 }
8977 else if (hash->elf.root.type == bfd_link_hash_defined
8978 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8979 {
721956f4
AM		 8980 sym_value = hash->elf.root.u.def.value;
8981 if (sym_sec->output_section != NULL)
8843416a 8982 ok_dest = TRUE;
721956f4
AM		 8983 }
8984 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8985 ;
8986 else if (hash->elf.root.type == bfd_link_hash_undefined)
8987 ;
8988 else
8989 {
8990 bfd_set_error (bfd_error_bad_value);
8991 goto error_ret_free_internal;
8992 }
8993 }
8994
8843416a
AM		 8995 destination = 0;
8996 if (ok_dest)
8997 {
8998 sym_value += irela->r_addend;
8999 destination = (sym_value
9000 + sym_sec->output_offset
9001 + sym_sec->output_section->vma);
9002 }
9003
8387904d
AM		 9004 code_sec = sym_sec;
9005 opd_adjust = get_opd_info (sym_sec);
9006 if (opd_adjust != NULL)
9007 {
9008 bfd_vma dest;
9009
9010 if (hash == NULL)
9011 {
3f764659 9012 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 9013 if (adjust == -1)
9014 continue;
9015 sym_value += adjust;
9016 }
9017 dest = opd_entry_value (sym_sec, sym_value,
9018 &code_sec, &sym_value);
9019 if (dest != (bfd_vma) -1)
9020 {
9021 destination = dest;
9022 if (fdh != NULL)
9023 {
9024 /* Fixup old ABI sym to point at code
9025 entry. */
99877b66 9026 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9027 hash->elf.root.u.def.section = code_sec;
9028 hash->elf.root.u.def.value = sym_value;
9029 }
9030 }
9031 }
9032
721956f4
AM		 9033 /* Determine what (if any) linker stub is needed. */
9034 stub_type = ppc_type_of_stub (section, irela, &hash,
9035 destination);
ad8e1ba5
AM		 9036
9037 if (stub_type != ppc_stub_plt_call)
9038 {
9039 /* Check whether we need a TOC adjusting stub.
9040 Since the linker pastes together pieces from
9041 different object files when creating the
9042 _init and _fini functions, it may be that a
9043 call to what looks like a local sym is in
9044 fact a call needing a TOC adjustment. */
8387904d
AM		 9045 if (code_sec != NULL
9046 && code_sec->output_section != NULL
9047 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9048 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9049 && (code_sec->has_toc_reloc
9050 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9051 stub_type = ppc_stub_long_branch_r2off;
9052 }
9053
721956f4
AM		 9054 if (stub_type == ppc_stub_none)
9055 continue;
9056
411e1bfb
AM		 9057 /* __tls_get_addr calls might be eliminated. */
9058 if (stub_type != ppc_stub_plt_call
9059 && hash != NULL
8387904d
AM		 9060 && (hash == htab->tls_get_addr
9061 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9062 && section->has_tls_reloc
9063 && irela != internal_relocs)
9064 {
9065 /* Get tls info. */
e7b938ca 9066 char *tls_mask;
411e1bfb 9067
0d4792f7 9068 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9069 irela - 1, input_bfd))
9070 goto error_ret_free_internal;
e7b938ca 9071 if (*tls_mask != 0)
411e1bfb
AM		 9072 continue;
9073 }
9074
721956f4
AM		 9075 /* Support for grouping stub sections. */
9076 id_sec = htab->stub_group[section->id].link_sec;
9077
9078 /* Get the name of this stub. */
9079 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9080 if (!stub_name)
9081 goto error_ret_free_internal;
9082
9083 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9084 stub_name, FALSE, FALSE);
721956f4
AM		 9085 if (stub_entry != NULL)
9086 {
9087 /* The proper stub has already been created. */
9088 free (stub_name);
9089 continue;
9090 }
9091
9092 stub_entry = ppc_add_stub (stub_name, section, htab);
9093 if (stub_entry == NULL)
9094 {
9095 free (stub_name);
6cdc0ccc
AM		 9096 error_ret_free_internal:
9097 if (elf_section_data (section)->relocs == NULL)
9098 free (internal_relocs);
9099 error_ret_free_local:
9100 if (local_syms != NULL
9101 && (symtab_hdr->contents
9102 != (unsigned char *) local_syms))
9103 free (local_syms);
b34976b6 9104 return FALSE;
721956f4
AM		 9105 }
9106
ad8e1ba5 9107 stub_entry->stub_type = stub_type;
721956f4 9108 stub_entry->target_value = sym_value;
8387904d 9109 stub_entry->target_section = code_sec;
721956f4 9110 stub_entry->h = hash;
411e1bfb 9111 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9112
9113 if (stub_entry->h != NULL)
9114 htab->stub_globals += 1;
9115
b34976b6 9116 stub_changed = TRUE;
721956f4
AM		 9117 }
9118
9119 /* We're done with the internal relocs, free them. */
6cdc0ccc 9120 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9121 free (internal_relocs);
721956f4 9122 }
6cdc0ccc
AM		 9123
9124 if (local_syms != NULL
9125 && symtab_hdr->contents != (unsigned char *) local_syms)
9126 {
9127 if (!info->keep_memory)
9128 free (local_syms);
9129 else
9130 symtab_hdr->contents = (unsigned char *) local_syms;
9131 }
721956f4
AM		 9132 }
9133
9134 if (!stub_changed)
9135 break;
9136
9137 /* OK, we've added some stubs. Find out the new size of the
9138 stub sections. */
9139 for (stub_sec = htab->stub_bfd->sections;
9140 stub_sec != NULL;
9141 stub_sec = stub_sec->next)
e717da7e 9142 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 9143 {
9144 stub_sec->size = 0;
9145 stub_sec->reloc_count = 0;
9146 }
eea6121a
AM		 9147
9148 htab->brlt->size = 0;
ee75fd95 9149 if (htab->relbrlt != NULL)
eea6121a 9150 htab->relbrlt->size = 0;
721956f4 9151
63bc6f6c 9152 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 9153
9154 /* Ask the linker to do its stuff. */
9155 (*htab->layout_sections_again) ();
9156 }
9157
afbe61cf
AM		 9158 /* It would be nice to strip .branch_lt from the output if the
9159 section is empty, but it's too late. If we strip sections here,
9160 the dynamic symbol table is corrupted since the section symbol
9161 for the stripped section isn't written. */
721956f4 9162
b34976b6 9163 return TRUE;
721956f4
AM		 9164}
9165
9166/* Called after we have determined section placement. If sections
805fc799 9167 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9168
805fc799 9169bfd_vma
4ce794b7 9170ppc64_elf_toc (bfd *obfd)
721956f4 9171{
805fc799
AM		 9172 asection *s;
9173 bfd_vma TOCstart;
721956f4 9174
805fc799
AM		 9175 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9176 order. The TOC starts where the first of these sections starts. */
9177 s = bfd_get_section_by_name (obfd, ".got");
9178 if (s == NULL)
9179 s = bfd_get_section_by_name (obfd, ".toc");
9180 if (s == NULL)
9181 s = bfd_get_section_by_name (obfd, ".tocbss");
9182 if (s == NULL)
9183 s = bfd_get_section_by_name (obfd, ".plt");
9184 if (s == NULL)
9185 {
9186 /* This may happen for
9187 o references to TOC base (SYM@toc / TOC[tc0]) without a
9188 .toc directive
9189 o bad linker script
9190 o --gc-sections and empty TOC sections
9191
9192 FIXME: Warn user? */
9193
9194 /* Look for a likely section. We probably won't even be
9195 using TOCstart. */
9196 for (s = obfd->sections; s != NULL; s = s->next)
9197 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9198 == (SEC_ALLOC | SEC_SMALL_DATA))
9199 break;
721956f4 9200 if (s == NULL)
805fc799
AM		 9201 for (s = obfd->sections; s != NULL; s = s->next)
9202 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9203 == (SEC_ALLOC | SEC_SMALL_DATA))
9204 break;
721956f4 9205 if (s == NULL)
805fc799
AM		 9206 for (s = obfd->sections; s != NULL; s = s->next)
9207 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9208 break;
721956f4 9209 if (s == NULL)
805fc799
AM		 9210 for (s = obfd->sections; s != NULL; s = s->next)
9211 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9212 break;
9213 }
721956f4 9214
805fc799
AM		 9215 TOCstart = 0;
9216 if (s != NULL)
9217 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9218
805fc799 9219 return TOCstart;
721956f4
AM		 9220}
9221
9222/* Build all the stubs associated with the current output file.
9223 The stubs are kept in a hash table attached to the main linker
9224 hash table. This function is called via gldelf64ppc_finish. */
9225
b34976b6 9226bfd_boolean
4ce794b7
AM		 9227ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9228 struct bfd_link_info *info,
9229 char **stats)
5d1634d7
AM		 9230{
9231 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9232 asection *stub_sec;
5d1634d7 9233 bfd_byte *p;
e717da7e 9234 int stub_sec_count = 0;
5d1634d7 9235
ad8e1ba5 9236 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9237
9238 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9239 for (stub_sec = htab->stub_bfd->sections;
9240 stub_sec != NULL;
9241 stub_sec = stub_sec->next)
eea6121a
AM		 9242 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9243 && stub_sec->size != 0)
e717da7e 9244 {
eea6121a
AM		 9245 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9246 if (stub_sec->contents == NULL)
9247 return FALSE;
9248 /* We want to check that built size is the same as calculated
9249 size. rawsize is a convenient location to use. */
9250 stub_sec->rawsize = stub_sec->size;
9251 stub_sec->size = 0;
e717da7e 9252 }
5d1634d7 9253
4ce794b7 9254 if (htab->plt != NULL)
5d1634d7 9255 {
9f951329 9256 unsigned int indx;
ad8e1ba5 9257 bfd_vma plt0;
9f951329 9258
721956f4 9259 /* Build the .glink plt call stub. */
4ce794b7
AM		 9260 plt0 = (htab->plt->output_section->vma
9261 + htab->plt->output_offset
9262 - (htab->glink->output_section->vma
9263 + htab->glink->output_offset
ad8e1ba5
AM		 9264 + GLINK_CALL_STUB_SIZE));
9265 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9266 {
ad8e1ba5
AM		 9267 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9268 bfd_set_error (bfd_error_bad_value);
9269 return FALSE;
721956f4 9270 }
721956f4 9271
97b639ba
AM		 9272 if (htab->emit_stub_syms)
9273 {
9274 struct elf_link_hash_entry *h;
9275 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9276 if (h == NULL)
9277 return FALSE;
9278 if (h->root.type == bfd_link_hash_new)
9279 {
9280 h->root.type = bfd_link_hash_defined;
9281 h->root.u.def.section = htab->glink;
9282 h->root.u.def.value = 0;
f5385ebf
AM		 9283 h->ref_regular = 1;
9284 h->def_regular = 1;
9285 h->ref_regular_nonweak = 1;
9286 h->forced_local = 1;
9287 h->non_elf = 0;
97b639ba
AM		 9288 }
9289 }
4ce794b7
AM		 9290 p = htab->glink->contents;
9291 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9292 p += 4;
4ce794b7 9293 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9294 p += 4;
4ce794b7 9295 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9296 p += 4;
4ce794b7 9297 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9298 p += 4;
4ce794b7 9299 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9300 p += 4;
4ce794b7 9301 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9302 p += 4;
4ce794b7 9303 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9304 p += 4;
4ce794b7 9305 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9306 p += 4;
4ce794b7 9307 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9308 p += 4;
4ce794b7 9309 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9310 p += 4;
4ce794b7 9311 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9312 p += 4;
4ce794b7 9313 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9314 p += 4;
4ce794b7 9315 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9316 p += 4;
4ce794b7 9317 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9318 p += 4;
4ce794b7 9319 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9320 p += 4;
4ce794b7 9321 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9322 p += 4;
9323
9f951329
AM		 9324 /* Build the .glink lazy link call stubs. */
9325 indx = 0;
eea6121a 9326 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9327 {
9328 if (indx < 0x8000)
9329 {
4ce794b7 9330 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9331 p += 4;
9332 }
9333 else
9334 {
4ce794b7 9335 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9336 p += 4;
4ce794b7 9337 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9338 p += 4;
9339 }
4ce794b7
AM		 9340 bfd_put_32 (htab->glink->owner,
9341 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9342 indx++;
9f951329
AM		 9343 p += 4;
9344 }
eea6121a 9345 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9346 }
5d1634d7 9347
eea6121a 9348 if (htab->brlt->size != 0)
721956f4 9349 {
4ce794b7 9350 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9351 htab->brlt->size);
4ce794b7 9352 if (htab->brlt->contents == NULL)
b34976b6 9353 return FALSE;
721956f4 9354 }
ee75fd95 9355 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9356 {
9357 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9358 htab->relbrlt->size);
63bc6f6c
AM		 9359 if (htab->relbrlt->contents == NULL)
9360 return FALSE;
9361 }
5d1634d7 9362
721956f4
AM		 9363 /* Build the stubs as directed by the stub hash table. */
9364 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9365
721956f4
AM		 9366 for (stub_sec = htab->stub_bfd->sections;
9367 stub_sec != NULL;
9368 stub_sec = stub_sec->next)
e717da7e
AM		 9369 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9370 {
9371 stub_sec_count += 1;
eea6121a 9372 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9373 break;
9374 }
5d1634d7 9375
721956f4 9376 if (stub_sec != NULL
eea6121a 9377 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9378 {
b34976b6 9379 htab->stub_error = TRUE;
721956f4 9380 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9381 }
721956f4 9382
d2a300cf
AM		 9383 if (htab->stub_error)
9384 return FALSE;
9385
9386 if (stats != NULL)
9387 {
9388 *stats = bfd_malloc (500);
9389 if (*stats == NULL)
9390 return FALSE;
9391
ee75fd95 9392 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9393 " branch %lu\n"
9394 " toc adjust %lu\n"
9395 " long branch %lu\n"
9396 " long toc adj %lu\n"
9397 " plt call %lu"),
e717da7e 9398 stub_sec_count,
ee75fd95 9399 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9400 htab->stub_count[ppc_stub_long_branch - 1],
9401 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9402 htab->stub_count[ppc_stub_plt_branch - 1],
9403 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9404 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9405 }
9406 return TRUE;
5bd4f169
AM		 9407}
9408
99877b66
AM		 9409/* This function undoes the changes made by add_symbol_adjust. */
9410
9411static bfd_boolean
9412undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9413{
9414 struct ppc_link_hash_entry *eh;
9415
9416 if (h->root.type == bfd_link_hash_indirect)
9417 return TRUE;
9418
9419 if (h->root.type == bfd_link_hash_warning)
9420 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9421
9422 eh = (struct ppc_link_hash_entry *) h;
9423 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9424 return TRUE;
9425
9426 eh->elf.root.type = bfd_link_hash_undefined;
9427 return TRUE;
9428}
9429
9430void
9431ppc64_elf_restore_symbols (struct bfd_link_info *info)
9432{
9433 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9434 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9435}
9436
5bd4f169
AM		 9437/* The RELOCATE_SECTION function is called by the ELF backend linker
9438 to handle the relocations for a section.
9439
9440 The relocs are always passed as Rela structures; if the section
9441 actually uses Rel structures, the r_addend field will always be
9442 zero.
9443
9444 This function is responsible for adjust the section contents as
9445 necessary, and (if using Rela relocs and generating a
1049f94e 9446 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9447 necessary.
9448
9449 This function does not have to worry about setting the reloc
9450 address or the reloc symbol index.
9451
9452 LOCAL_SYMS is a pointer to the swapped in local symbols.
9453
9454 LOCAL_SECTIONS is an array giving the section in the input file
9455 corresponding to the st_shndx field of each local symbol.
9456
9457 The global hash table entry for the global symbols can be found
9458 via elf_sym_hashes (input_bfd).
9459
1049f94e 9460 When generating relocatable output, this function must handle
5bd4f169
AM		 9461 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9462 going to be the section symbol corresponding to the output
9463 section, which means that the addend must be adjusted
9464 accordingly. */
9465
b34976b6 9466static bfd_boolean
4ce794b7
AM		 9467ppc64_elf_relocate_section (bfd *output_bfd,
9468 struct bfd_link_info *info,
9469 bfd *input_bfd,
9470 asection *input_section,
9471 bfd_byte *contents,
9472 Elf_Internal_Rela *relocs,
9473 Elf_Internal_Sym *local_syms,
9474 asection **local_sections)
5bd4f169 9475{
65f38f15 9476 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9477 Elf_Internal_Shdr *symtab_hdr;
9478 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9479 Elf_Internal_Rela *rel;
9480 Elf_Internal_Rela *relend;
411e1bfb
AM		 9481 Elf_Internal_Rela outrel;
9482 bfd_byte *loc;
411e1bfb 9483 struct got_entry **local_got_ents;
5bd4f169 9484 bfd_vma TOCstart;
b34976b6
AM		 9485 bfd_boolean ret = TRUE;
9486 bfd_boolean is_opd;
96e0dda4 9487 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9488 bfd_boolean is_power4 = FALSE;
5bd4f169 9489
1049f94e 9490 if (info->relocatable)
b34976b6 9491 return TRUE;
b491616a 9492
65f38f15 9493 /* Initialize howto table if needed. */
5bd4f169 9494 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9495 ppc_howto_init ();
9496
65f38f15 9497 htab = ppc_hash_table (info);
ee75fd95
AM		 9498
9499 /* Don't relocate stub sections. */
9500 if (input_section->owner == htab->stub_bfd)
9501 return TRUE;
9502
411e1bfb 9503 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9504 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9505 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9506 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9507 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9508
5bd4f169
AM		 9509 rel = relocs;
9510 relend = relocs + input_section->reloc_count;
9511 for (; rel < relend; rel++)
9512 {
04c9666a 9513 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9514 bfd_vma addend;
9515 bfd_reloc_status_type r;
9516 Elf_Internal_Sym *sym;
9517 asection *sec;
039b3fef
AM		 9518 struct elf_link_hash_entry *h_elf;
9519 struct ppc_link_hash_entry *h;
9520 struct ppc_link_hash_entry *fdh;
5bd4f169 9521 const char *sym_name;
0d4792f7 9522 unsigned long r_symndx, toc_symndx;
951fd09b 9523 char tls_mask, tls_gd, tls_type;
0d4792f7 9524 char sym_type;
5bd4f169 9525 bfd_vma relocation;
b34976b6
AM		 9526 bfd_boolean unresolved_reloc;
9527 bfd_boolean warned;
50bc7936 9528 unsigned long insn, mask;
721956f4
AM		 9529 struct ppc_stub_hash_entry *stub_entry;
9530 bfd_vma max_br_offset;
9531 bfd_vma from;
5bd4f169 9532
4ce794b7 9533 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9534 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9535
9536 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9537 symbol of the previous ADDR64 reloc. The symbol gives us the
9538 proper TOC base to use. */
9539 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9540 && rel != relocs
9541 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9542 && is_opd)
9543 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9544
4ce794b7
AM		 9545 sym = NULL;
9546 sec = NULL;
039b3fef 9547 h_elf = NULL;
4ce794b7 9548 sym_name = NULL;
b34976b6
AM		 9549 unresolved_reloc = FALSE;
9550 warned = FALSE;
65f38f15 9551
0b13192e 9552 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9553 {
9554 /* It's a local symbol. */
4025353c
AM		 9555 long *opd_adjust;
9556
5bd4f169
AM		 9557 sym = local_syms + r_symndx;
9558 sec = local_sections[r_symndx];
26c61ae5 9559 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9560 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9561 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9562 opd_adjust = get_opd_info (sec);
9563 if (opd_adjust != NULL)
1e2f5b6e 9564 {
3f764659 9565 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9566 if (adjust == -1)
9567 relocation = 0;
9568 else
9569 relocation += adjust;
1e2f5b6e 9570 }
5bd4f169
AM		 9571 }
9572 else
9573 {
b2a8e766
AM		 9574 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9575 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9576 h_elf, sec, relocation,
b2a8e766 9577 unresolved_reloc, warned);
039b3fef
AM		 9578 sym_name = h_elf->root.root.string;
9579 sym_type = h_elf->type;
5bd4f169 9580 }
039b3fef 9581 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9582
951fd09b
AM		 9583 /* TLS optimizations. Replace instruction sequences and relocs
9584 based on information we collected in tls_optimize. We edit
9585 RELOCS so that --emit-relocs will output something sensible
9586 for the final instruction stream. */
9587 tls_mask = 0;
9588 tls_gd = 0;
0d4792f7 9589 toc_symndx = 0;
d881513a 9590 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9591 {
9592 if (h != NULL)
039b3fef 9593 tls_mask = h->tls_mask;
411e1bfb
AM		 9594 else if (local_got_ents != NULL)
9595 {
e7b938ca
AM		 9596 char *lgot_masks;
9597 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9598 tls_mask = lgot_masks[r_symndx];
411e1bfb 9599 }
0d4792f7
AM		 9600 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9601 {
9602 /* Check for toc tls entries. */
9603 char *toc_tls;
9604
9605 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9606 rel, input_bfd))
9607 return FALSE;
9608
9609 if (toc_tls)
9610 tls_mask = *toc_tls;
9611 }
9612 }
9613
9614 /* Check that tls relocs are used with tls syms, and non-tls
9615 relocs are used with non-tls syms. */
9616 if (r_symndx != 0
9617 && r_type != R_PPC64_NONE
9618 && (h == NULL
039b3fef
AM		 9619 || h->elf.root.type == bfd_link_hash_defined
9620 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9621 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9622 {
9623 if (r_type == R_PPC64_TLS && tls_mask != 0)
9624 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9625 ;
9626 else
9627 (*_bfd_error_handler)
9628 (sym_type == STT_TLS
d003868e
AM		 9629 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9630 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9631 input_bfd,
9632 input_section,
0d4792f7
AM		 9633 (long) rel->r_offset,
9634 ppc64_elf_howto_table[r_type]->name,
9635 sym_name);
411e1bfb
AM		 9636 }
9637
9638 /* Ensure reloc mapping code below stays sane. */
9639 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9640 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9641 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9642 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9643 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9644 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9645 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9646 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9647 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9648 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9649 abort ();
0d4792f7 9650
411e1bfb
AM		 9651 switch (r_type)
9652 {
9653 default:
411e1bfb
AM		 9654 break;
9655
9656 case R_PPC64_TOC16:
9657 case R_PPC64_TOC16_LO:
9658 case R_PPC64_TOC16_DS:
9659 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9660 {
9661 /* Check for toc tls entries. */
9662 char *toc_tls;
951fd09b 9663 int retval;
411e1bfb 9664
0d4792f7
AM		 9665 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9666 rel, input_bfd);
951fd09b 9667 if (retval == 0)
411e1bfb
AM		 9668 return FALSE;
9669
9670 if (toc_tls)
9671 {
951fd09b 9672 tls_mask = *toc_tls;
411e1bfb
AM		 9673 if (r_type == R_PPC64_TOC16_DS
9674 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9675 {
9676 if (tls_mask != 0
9677 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9678 goto toctprel;
9679 }
411e1bfb 9680 else
951fd09b
AM		 9681 {
9682 /* If we found a GD reloc pair, then we might be
9683 doing a GD->IE transition. */
9684 if (retval == 2)
9685 {
9686 tls_gd = TLS_TPRELGD;
9687 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9688 goto tls_get_addr_check;
9689 }
9690 else if (retval == 3)
9691 {
9692 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9693 goto tls_get_addr_check;
9694 }
9695 }
411e1bfb
AM		 9696 }
9697 }
9698 break;
9699
9700 case R_PPC64_GOT_TPREL16_DS:
9701 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9702 if (tls_mask != 0
9703 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9704 {
81407a69 9705 toctprel:
411e1bfb
AM		 9706 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9707 insn &= 31 << 21;
9708 insn |= 0x3c0d0000; /* addis 0,13,0 */
9709 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9710 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9711 if (toc_symndx != 0)
9712 {
9713 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9714 /* We changed the symbol. Start over in order to
9715 get h, sym, sec etc. right. */
9716 rel--;
9717 continue;
9718 }
9719 else
9720 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9721 }
9722 break;
9723
9724 case R_PPC64_TLS:
951fd09b
AM		 9725 if (tls_mask != 0
9726 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9727 {
50bc7936 9728 bfd_vma rtra;
411e1bfb 9729 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9730 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9731 == ((31 << 26) | (13 << 11)))
9732 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9733 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9734 == ((31 << 26) | (13 << 16)))
9735 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9736 else
9737 abort ();
9738 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9739 /* add -> addi. */
9740 insn = 14 << 26;
9741 else if ((insn & (31 << 1)) == 23 << 1
9742 && ((insn & (31 << 6)) < 14 << 6
9743 || ((insn & (31 << 6)) >= 16 << 6
9744 && (insn & (31 << 6)) < 24 << 6)))
9745 /* load and store indexed -> dform. */
9746 insn = (32 | ((insn >> 6) & 31)) << 26;
9747 else if ((insn & (31 << 1)) == 21 << 1
9748 && (insn & (0x1a << 6)) == 0)
9749 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9750 insn = (((58 | ((insn >> 6) & 4)) << 26)
9751 | ((insn >> 6) & 1));
9752 else if ((insn & (31 << 1)) == 21 << 1
9753 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9754 /* lwax -> lwa. */
9755 insn = (58 << 26) | 2;
9756 else
9757 abort ();
9758 insn |= rtra;
9759 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9760 /* Was PPC64_TLS which sits on insn boundary, now
9761 PPC64_TPREL16_LO which is at insn+2. */
9762 rel->r_offset += 2;
0d4792f7
AM		 9763 r_type = R_PPC64_TPREL16_LO;
9764 if (toc_symndx != 0)
9765 {
9766 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9767 /* We changed the symbol. Start over in order to
9768 get h, sym, sec etc. right. */
9769 rel--;
9770 continue;
9771 }
9772 else
9773 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9774 }
9775 break;
9776
411e1bfb
AM		 9777 case R_PPC64_GOT_TLSGD16_HI:
9778 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9779 tls_gd = TLS_TPRELGD;
9780 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9781 goto tls_gdld_hi;
9782 break;
9783
411e1bfb
AM		 9784 case R_PPC64_GOT_TLSLD16_HI:
9785 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9786 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9787 {
951fd09b
AM		 9788 tls_gdld_hi:
9789 if ((tls_mask & tls_gd) != 0)
9790 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9791 + R_PPC64_GOT_TPREL16_DS);
9792 else
411e1bfb 9793 {
951fd09b
AM		 9794 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9795 rel->r_offset -= 2;
9796 r_type = R_PPC64_NONE;
411e1bfb 9797 }
951fd09b 9798 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9799 }
9800 break;
9801
951fd09b
AM		 9802 case R_PPC64_GOT_TLSGD16:
9803 case R_PPC64_GOT_TLSGD16_LO:
9804 tls_gd = TLS_TPRELGD;
9805 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9806 goto tls_get_addr_check;
9807 break;
411e1bfb 9808
951fd09b
AM		 9809 case R_PPC64_GOT_TLSLD16:
9810 case R_PPC64_GOT_TLSLD16_LO:
9811 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9812 {
9813 tls_get_addr_check:
9814 if (rel + 1 < relend)
411e1bfb 9815 {
951fd09b
AM		 9816 enum elf_ppc64_reloc_type r_type2;
9817 unsigned long r_symndx2;
9818 struct elf_link_hash_entry *h2;
9819 bfd_vma insn1, insn2, insn3;
9820 bfd_vma offset;
9821
9822 /* The next instruction should be a call to
9823 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9824 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9825 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9826 if (r_symndx2 < symtab_hdr->sh_info
9827 || (r_type2 != R_PPC64_REL14
9828 && r_type2 != R_PPC64_REL14_BRTAKEN
9829 && r_type2 != R_PPC64_REL14_BRNTAKEN
9830 && r_type2 != R_PPC64_REL24))
9831 break;
9832
9833 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9834 while (h2->root.type == bfd_link_hash_indirect
9835 || h2->root.type == bfd_link_hash_warning)
9836 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9837 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9838 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9839 break;
9840
9841 /* OK, it checks out. Replace the call. */
9842 offset = rel[1].r_offset;
9843 insn1 = bfd_get_32 (output_bfd,
9844 contents + rel->r_offset - 2);
9845 insn3 = bfd_get_32 (output_bfd,
9846 contents + offset + 4);
9847 if ((tls_mask & tls_gd) != 0)
411e1bfb 9848 {
951fd09b
AM		 9849 /* IE */
9850 insn1 &= (1 << 26) - (1 << 2);
9851 insn1 |= 58 << 26; /* ld */
9852 insn2 = 0x7c636a14; /* add 3,3,13 */
9853 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9854 if ((tls_mask & TLS_EXPLICIT) == 0)
9855 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9856 + R_PPC64_GOT_TPREL16_DS);
9857 else
9858 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9859 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9860 }
9861 else
951fd09b
AM		 9862 {
9863 /* LE */
9864 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9865 insn2 = 0x38630000; /* addi 3,3,0 */
9866 if (tls_gd == 0)
9867 {
9868 /* Was an LD reloc. */
9869 r_symndx = 0;
e1918d23
AM		 9870 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9871 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9872 }
0d4792f7
AM		 9873 else if (toc_symndx != 0)
9874 r_symndx = toc_symndx;
951fd09b
AM		 9875 r_type = R_PPC64_TPREL16_HA;
9876 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9877 rel[1].r_info = ELF64_R_INFO (r_symndx,
9878 R_PPC64_TPREL16_LO);
9879 rel[1].r_offset += 2;
9880 }
9881 if (insn3 == NOP
9882 || insn3 == CROR_151515 || insn3 == CROR_313131)
9883 {
9884 insn3 = insn2;
9885 insn2 = NOP;
9886 rel[1].r_offset += 4;
9887 }
9888 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9889 bfd_put_32 (output_bfd, insn2, contents + offset);
9890 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9891 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9892 {
0d4792f7
AM		 9893 /* We changed the symbol. Start over in order
9894 to get h, sym, sec etc. right. */
951fd09b
AM		 9895 rel--;
9896 continue;
9897 }
411e1bfb 9898 }
411e1bfb 9899 }
411e1bfb
AM		 9900 break;
9901
9902 case R_PPC64_DTPMOD64:
951fd09b
AM		 9903 if (rel + 1 < relend
9904 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9905 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9906 {
951fd09b
AM		 9907 if ((tls_mask & TLS_GD) == 0)
9908 {
9909 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9910 if ((tls_mask & TLS_TPRELGD) != 0)
9911 r_type = R_PPC64_TPREL64;
9912 else
9913 {
4ce794b7 9914 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9915 r_type = R_PPC64_NONE;
9916 }
9917 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9918 }
9919 }
9920 else
9921 {
9922 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9923 {
4ce794b7 9924 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9925 r_type = R_PPC64_NONE;
951fd09b 9926 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9927 }
411e1bfb
AM		 9928 }
9929 break;
9930
9931 case R_PPC64_TPREL64:
951fd09b 9932 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9933 {
9934 r_type = R_PPC64_NONE;
9935 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9936 }
9937 break;
9938 }
9939
9940 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9941 insn = 0;
b25116a9
AM		 9942 max_br_offset = 1 << 25;
9943 addend = rel->r_addend;
65f38f15 9944 switch (r_type)
5bd4f169
AM		 9945 {
9946 default:
65f38f15 9947 break;
5bd4f169 9948
65f38f15
AM		 9949 /* Branch taken prediction relocations. */
9950 case R_PPC64_ADDR14_BRTAKEN:
9951 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9952 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9953 /* Fall thru. */
65f38f15 9954
86c76c7b 9955 /* Branch not taken prediction relocations. */
65f38f15
AM		 9956 case R_PPC64_ADDR14_BRNTAKEN:
9957 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9958 insn |= bfd_get_32 (output_bfd,
9959 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9960 /* Fall thru. */
86c76c7b 9961
b25116a9
AM		 9962 case R_PPC64_REL14:
9963 max_br_offset = 1 << 15;
9964 /* Fall thru. */
5bd4f169 9965
65f38f15 9966 case R_PPC64_REL24:
ad8e1ba5
AM		 9967 /* Calls to functions with a different TOC, such as calls to
9968 shared objects, need to alter the TOC pointer. This is
9969 done using a linkage stub. A REL24 branching to these
9970 linkage stubs needs to be followed by a nop, as the nop
9971 will be replaced with an instruction to restore the TOC
9972 base pointer. */
b25116a9 9973 stub_entry = NULL;
8387904d 9974 fdh = h;
ad8e1ba5 9975 if (((h != NULL
039b3fef
AM		 9976 && (((fdh = h->oh) != NULL
9977 && fdh->elf.plt.plist != NULL)
9978 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9979 || (sec != NULL
ad8e1ba5 9980 && sec->output_section != NULL
b25116a9 9981 && sec->id <= htab->top_id
ad8e1ba5
AM		 9982 && (htab->stub_group[sec->id].toc_off
9983 != htab->stub_group[input_section->id].toc_off)))
721956f4 9984 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9985 rel, htab)) != NULL
9986 && (stub_entry->stub_type == ppc_stub_plt_call
9987 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9988 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9989 {
b25116a9 9990 bfd_boolean can_plt_call = FALSE;
721956f4 9991
eea6121a 9992 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9993 {
b25116a9
AM		 9994 unsigned long nop;
9995 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9996 if (nop == NOP
9997 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9998 {
4ce794b7 9999 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10000 contents + rel->r_offset + 4);
b25116a9 10001 can_plt_call = TRUE;
41bd81ab 10002 }
5bd4f169 10003 }
721956f4
AM		 10004
10005 if (!can_plt_call)
10006 {
ad8e1ba5
AM		 10007 if (stub_entry->stub_type == ppc_stub_plt_call)
10008 {
10009 /* If this is a plain branch rather than a branch
10010 and link, don't require a nop. */
b25116a9
AM		 10011 unsigned long br;
10012 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
10013 if ((br & 1) == 0)
10014 can_plt_call = TRUE;
ad8e1ba5 10015 }
6ab189d5 10016 else if (h != NULL
039b3fef 10017 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10018 ".__libc_start_main") == 0)
10019 {
10020 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10021 can_plt_call = TRUE;
6ab189d5 10022 }
ad8e1ba5
AM		 10023 else
10024 {
10025 if (strcmp (input_section->output_section->name,
10026 ".init") == 0
10027 || strcmp (input_section->output_section->name,
10028 ".fini") == 0)
10029 (*_bfd_error_handler)
d003868e 10030 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10031 "not supported using your crt files; "
10032 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10033 input_bfd,
10034 input_section,
ad8e1ba5
AM		 10035 (long) rel->r_offset);
10036 else
10037 (*_bfd_error_handler)
d003868e 10038 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10039 "does not allow automatic multiple TOCs; "
10040 "recompile with -mminimal-toc or "
10041 "-fno-optimize-sibling-calls, "
10042 "or make `%s' extern"),
d003868e
AM		 10043 input_bfd,
10044 input_section,
ad8e1ba5
AM		 10045 (long) rel->r_offset,
10046 sym_name,
10047 sym_name);
10048 bfd_set_error (bfd_error_bad_value);
10049 ret = FALSE;
10050 }
721956f4
AM		 10051 }
10052
b25116a9
AM		 10053 if (can_plt_call
10054 && stub_entry->stub_type == ppc_stub_plt_call)
10055 unresolved_reloc = FALSE;
10056 }
10057
8387904d
AM		 10058 if (stub_entry == NULL
10059 && get_opd_info (sec) != NULL)
10060 {
10061 /* The branch destination is the value of the opd entry. */
10062 bfd_vma off = (relocation - sec->output_section->vma
10063 - sec->output_offset + rel->r_addend);
10064 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10065 if (dest != (bfd_vma) -1)
10066 {
10067 relocation = dest;
10068 addend = 0;
10069 }
10070 }
10071
b25116a9
AM		 10072 /* If the branch is out of reach we ought to have a long
10073 branch stub. */
10074 from = (rel->r_offset
10075 + input_section->output_offset
10076 + input_section->output_section->vma);
10077
10078 if (stub_entry == NULL
10079 && (relocation + rel->r_addend - from + max_br_offset
10080 >= 2 * max_br_offset)
10081 && r_type != R_PPC64_ADDR14_BRTAKEN
10082 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10083 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10084 htab);
b25116a9
AM		 10085
10086 if (stub_entry != NULL)
10087 {
10088 /* Munge up the value and addend so that we call the stub
10089 rather than the procedure directly. */
10090 relocation = (stub_entry->stub_offset
10091 + stub_entry->stub_sec->output_offset
10092 + stub_entry->stub_sec->output_section->vma);
10093 addend = 0;
10094 }
10095
10096 if (insn != 0)
10097 {
10098 if (is_power4)
721956f4 10099 {
b25116a9
AM		 10100 /* Set 'a' bit. This is 0b00010 in BO field for branch
10101 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10102 for branch on CTR insns (BO == 1a00t or 1a01t). */
10103 if ((insn & (0x14 << 21)) == (0x04 << 21))
10104 insn |= 0x02 << 21;
10105 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10106 insn |= 0x08 << 21;
10107 else
10108 break;
10109 }
10110 else
10111 {
10112 /* Invert 'y' bit if not the default. */
10113 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10114 insn ^= 0x01 << 21;
721956f4 10115 }
b25116a9
AM		 10116
10117 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10118 }
e86ce104 10119
06da1e8e
AM		 10120 /* NOP out calls to undefined weak functions.
10121 We can thus call a weak function without first
10122 checking whether the function is defined. */
b25116a9 10123 else if (h != NULL
039b3fef 10124 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10125 && r_type == R_PPC64_REL24
10126 && relocation == 0
10127 && rel->r_addend == 0)
e86ce104 10128 {
06da1e8e
AM		 10129 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10130 continue;
e86ce104 10131 }
65f38f15
AM		 10132 break;
10133 }
5bd4f169 10134
65f38f15 10135 /* Set `addend'. */
411e1bfb 10136 tls_type = 0;
65f38f15
AM		 10137 switch (r_type)
10138 {
10139 default:
10140 (*_bfd_error_handler)
d003868e
AM		 10141 (_("%B: unknown relocation type %d for symbol %s"),
10142 input_bfd, (int) r_type, sym_name);
5bd4f169 10143
65f38f15 10144 bfd_set_error (bfd_error_bad_value);
b34976b6 10145 ret = FALSE;
65f38f15 10146 continue;
5bd4f169 10147
65f38f15 10148 case R_PPC64_NONE:
411e1bfb 10149 case R_PPC64_TLS:
04c9666a
AM		 10150 case R_PPC64_GNU_VTINHERIT:
10151 case R_PPC64_GNU_VTENTRY:
65f38f15 10152 continue;
5bd4f169
AM		 10153
10154 /* GOT16 relocations. Like an ADDR16 using the symbol's
10155 address in the GOT as relocation value instead of the
411e1bfb 10156 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10157 symbol and put the symbol value there. */
411e1bfb
AM		 10158 case R_PPC64_GOT_TLSGD16:
10159 case R_PPC64_GOT_TLSGD16_LO:
10160 case R_PPC64_GOT_TLSGD16_HI:
10161 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10162 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10163 goto dogot;
10164
10165 case R_PPC64_GOT_TLSLD16:
10166 case R_PPC64_GOT_TLSLD16_LO:
10167 case R_PPC64_GOT_TLSLD16_HI:
10168 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10169 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10170 goto dogot;
10171
10172 case R_PPC64_GOT_TPREL16_DS:
10173 case R_PPC64_GOT_TPREL16_LO_DS:
10174 case R_PPC64_GOT_TPREL16_HI:
10175 case R_PPC64_GOT_TPREL16_HA:
10176 tls_type = TLS_TLS | TLS_TPREL;
10177 goto dogot;
10178
10179 case R_PPC64_GOT_DTPREL16_DS:
10180 case R_PPC64_GOT_DTPREL16_LO_DS:
10181 case R_PPC64_GOT_DTPREL16_HI:
10182 case R_PPC64_GOT_DTPREL16_HA:
10183 tls_type = TLS_TLS | TLS_DTPREL;
10184 goto dogot;
10185
65f38f15
AM		 10186 case R_PPC64_GOT16:
10187 case R_PPC64_GOT16_LO:
10188 case R_PPC64_GOT16_HI:
10189 case R_PPC64_GOT16_HA:
10190 case R_PPC64_GOT16_DS:
10191 case R_PPC64_GOT16_LO_DS:
411e1bfb 10192 dogot:
5bd4f169
AM		 10193 {
10194 /* Relocation is to the entry for this symbol in the global
10195 offset table. */
e717da7e 10196 asection *got;
d881513a 10197 bfd_vma *offp;
5bd4f169 10198 bfd_vma off;
d881513a 10199 unsigned long indx = 0;
65f38f15 10200
d881513a
AM		 10201 if (tls_type == (TLS_TLS | TLS_LD)
10202 && (h == NULL
f5385ebf 10203 || !h->elf.def_dynamic))
e717da7e 10204 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10205 else
5bd4f169 10206 {
d881513a 10207 struct got_entry *ent;
5bd4f169 10208
d881513a
AM		 10209 if (h != NULL)
10210 {
10211 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10212 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10213 &h->elf)
d881513a 10214 || (info->shared
039b3fef 10215 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10216 /* This is actually a static link, or it is a
10217 -Bsymbolic link and the symbol is defined
10218 locally, or the symbol was forced to be local
10219 because of a version file. */
10220 ;
10221 else
10222 {
039b3fef 10223 indx = h->elf.dynindx;
d881513a
AM		 10224 unresolved_reloc = FALSE;
10225 }
039b3fef 10226 ent = h->elf.got.glist;
d881513a 10227 }
411e1bfb 10228 else
5bd4f169 10229 {
d881513a
AM		 10230 if (local_got_ents == NULL)
10231 abort ();
10232 ent = local_got_ents[r_symndx];
5bd4f169 10233 }
d881513a
AM		 10234
10235 for (; ent != NULL; ent = ent->next)
10236 if (ent->addend == rel->r_addend
e717da7e 10237 && ent->owner == input_bfd
d881513a
AM		 10238 && ent->tls_type == tls_type)
10239 break;
10240 if (ent == NULL)
10241 abort ();
10242 offp = &ent->got.offset;
5bd4f169 10243 }
411e1bfb 10244
e717da7e
AM		 10245 got = ppc64_elf_tdata (input_bfd)->got;
10246 if (got == NULL)
10247 abort ();
10248
411e1bfb
AM		 10249 /* The offset must always be a multiple of 8. We use the
10250 least significant bit to record whether we have already
10251 processed this entry. */
d881513a 10252 off = *offp;
411e1bfb
AM		 10253 if ((off & 1) != 0)
10254 off &= ~1;
5bd4f169
AM		 10255 else
10256 {
411e1bfb
AM		 10257 /* Generate relocs for the dynamic linker, except in
10258 the case of TLSLD where we'll use one entry per
10259 module. */
e717da7e
AM		 10260 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10261
d881513a 10262 *offp = off | 1;
4e795f50
AM		 10263 if ((info->shared || indx != 0)
10264 && (h == NULL
039b3fef
AM		 10265 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10266 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10267 {
e717da7e
AM		 10268 outrel.r_offset = (got->output_section->vma
10269 + got->output_offset
411e1bfb 10270 + off);
81407a69 10271 outrel.r_addend = rel->r_addend;
d881513a 10272 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10273 {
411e1bfb 10274 outrel.r_addend = 0;
e515b051 10275 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10276 if (tls_type == (TLS_TLS | TLS_GD))
10277 {
e717da7e
AM		 10278 loc = relgot->contents;
10279 loc += (relgot->reloc_count++
d881513a
AM		 10280 * sizeof (Elf64_External_Rela));
10281 bfd_elf64_swap_reloca_out (output_bfd,
10282 &outrel, loc);
e515b051 10283 outrel.r_offset += 8;
81407a69 10284 outrel.r_addend = rel->r_addend;
d881513a
AM		 10285 outrel.r_info
10286 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10287 }
411e1bfb 10288 }
951fd09b 10289 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10290 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10291 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10292 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10293 else if (indx == 0)
81407a69
AM		 10294 {
10295 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10296
10297 /* Write the .got section contents for the sake
10298 of prelink. */
e717da7e 10299 loc = got->contents + off;
23fbd6fa
JJ		 10300 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10301 loc);
81407a69 10302 }
411e1bfb
AM		 10303 else
10304 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10305
10306 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10307 {
10308 outrel.r_addend += relocation;
10309 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10310 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10311 }
e717da7e
AM		 10312 loc = relgot->contents;
10313 loc += (relgot->reloc_count++
411e1bfb
AM		 10314 * sizeof (Elf64_External_Rela));
10315 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10316 }
10317
ad8e1ba5 10318 /* Init the .got section contents here if we're not
81407a69 10319 emitting a reloc. */
d881513a 10320 else
411e1bfb 10321 {
d881513a 10322 relocation += rel->r_addend;
7b609f53
AM		 10323 if (tls_type == (TLS_TLS | TLS_LD))
10324 relocation = 1;
10325 else if (tls_type != 0)
411e1bfb 10326 {
e1918d23 10327 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10328 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10329 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10330
7b609f53
AM		 10331 if (tls_type == (TLS_TLS | TLS_GD))
10332 {
10333 bfd_put_64 (output_bfd, relocation,
e717da7e 10334 got->contents + off + 8);
7b609f53
AM		 10335 relocation = 1;
10336 }
411e1bfb 10337 }
7b609f53 10338
411e1bfb 10339 bfd_put_64 (output_bfd, relocation,
e717da7e 10340 got->contents + off);
5bd4f169
AM		 10341 }
10342 }
10343
65f38f15
AM		 10344 if (off >= (bfd_vma) -2)
10345 abort ();
10346
e717da7e 10347 relocation = got->output_offset + off;
65f38f15 10348
5bd4f169 10349 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10350 addend = -TOC_BASE_OFF;
5bd4f169 10351 }
65f38f15
AM		 10352 break;
10353
10354 case R_PPC64_PLT16_HA:
10355 case R_PPC64_PLT16_HI:
10356 case R_PPC64_PLT16_LO:
10357 case R_PPC64_PLT32:
10358 case R_PPC64_PLT64:
10359 /* Relocation is to the entry for this symbol in the
10360 procedure linkage table. */
10361
10362 /* Resolve a PLT reloc against a local symbol directly,
10363 without using the procedure linkage table. */
10364 if (h == NULL)
10365 break;
10366
411e1bfb
AM		 10367 /* It's possible that we didn't make a PLT entry for this
10368 symbol. This happens when statically linking PIC code,
10369 or when using -Bsymbolic. Go find a match if there is a
10370 PLT entry. */
4ce794b7 10371 if (htab->plt != NULL)
65f38f15 10372 {
411e1bfb 10373 struct plt_entry *ent;
039b3fef 10374 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10375 if (ent->addend == rel->r_addend
10376 && ent->plt.offset != (bfd_vma) -1)
10377 {
4ce794b7
AM		 10378 relocation = (htab->plt->output_section->vma
10379 + htab->plt->output_offset
411e1bfb
AM		 10380 + ent->plt.offset);
10381 unresolved_reloc = FALSE;
10382 }
65f38f15 10383 }
65f38f15 10384 break;
5bd4f169 10385
0b13192e
AM		 10386 case R_PPC64_TOC:
10387 /* Relocation value is TOC base. */
10388 relocation = TOCstart;
10389 if (r_symndx == 0)
10390 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10391 else if (unresolved_reloc)
10392 ;
10393 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10394 relocation += htab->stub_group[sec->id].toc_off;
10395 else
10396 unresolved_reloc = TRUE;
10397 goto dodyn2;
10398
5bd4f169
AM		 10399 /* TOC16 relocs. We want the offset relative to the TOC base,
10400 which is the address of the start of the TOC plus 0x8000.
10401 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10402 in this order. */
65f38f15
AM		 10403 case R_PPC64_TOC16:
10404 case R_PPC64_TOC16_LO:
10405 case R_PPC64_TOC16_HI:
10406 case R_PPC64_TOC16_DS:
10407 case R_PPC64_TOC16_LO_DS:
10408 case R_PPC64_TOC16_HA:
ad8e1ba5 10409 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10410 break;
10411
10412 /* Relocate against the beginning of the section. */
65f38f15
AM		 10413 case R_PPC64_SECTOFF:
10414 case R_PPC64_SECTOFF_LO:
10415 case R_PPC64_SECTOFF_HI:
10416 case R_PPC64_SECTOFF_DS:
10417 case R_PPC64_SECTOFF_LO_DS:
10418 case R_PPC64_SECTOFF_HA:
4ce794b7 10419 if (sec != NULL)
65f38f15 10420 addend -= sec->output_section->vma;
5bd4f169
AM		 10421 break;
10422
721956f4
AM		 10423 case R_PPC64_REL14:
10424 case R_PPC64_REL14_BRNTAKEN:
10425 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10426 case R_PPC64_REL24:
10427 break;
10428
411e1bfb
AM		 10429 case R_PPC64_TPREL16:
10430 case R_PPC64_TPREL16_LO:
10431 case R_PPC64_TPREL16_HI:
10432 case R_PPC64_TPREL16_HA:
10433 case R_PPC64_TPREL16_DS:
10434 case R_PPC64_TPREL16_LO_DS:
10435 case R_PPC64_TPREL16_HIGHER:
10436 case R_PPC64_TPREL16_HIGHERA:
10437 case R_PPC64_TPREL16_HIGHEST:
10438 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10439 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10440 if (info->shared)
10441 /* The TPREL16 relocs shouldn't really be used in shared
10442 libs as they will result in DT_TEXTREL being set, but
10443 support them anyway. */
10444 goto dodyn;
10445 break;
10446
10447 case R_PPC64_DTPREL16:
10448 case R_PPC64_DTPREL16_LO:
10449 case R_PPC64_DTPREL16_HI:
10450 case R_PPC64_DTPREL16_HA:
10451 case R_PPC64_DTPREL16_DS:
10452 case R_PPC64_DTPREL16_LO_DS:
10453 case R_PPC64_DTPREL16_HIGHER:
10454 case R_PPC64_DTPREL16_HIGHERA:
10455 case R_PPC64_DTPREL16_HIGHEST:
10456 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10457 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10458 break;
10459
e515b051
AM		 10460 case R_PPC64_DTPMOD64:
10461 relocation = 1;
10462 addend = 0;
10463 goto dodyn;
10464
411e1bfb 10465 case R_PPC64_TPREL64:
e1918d23 10466 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10467 goto dodyn;
10468
10469 case R_PPC64_DTPREL64:
e1918d23 10470 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10471 /* Fall thru */
10472
65f38f15
AM		 10473 /* Relocations that may need to be propagated if this is a
10474 dynamic object. */
04c9666a 10475 case R_PPC64_REL30:
65f38f15
AM		 10476 case R_PPC64_REL32:
10477 case R_PPC64_REL64:
10478 case R_PPC64_ADDR14:
10479 case R_PPC64_ADDR14_BRNTAKEN:
10480 case R_PPC64_ADDR14_BRTAKEN:
10481 case R_PPC64_ADDR16:
10482 case R_PPC64_ADDR16_DS:
10483 case R_PPC64_ADDR16_HA:
10484 case R_PPC64_ADDR16_HI:
10485 case R_PPC64_ADDR16_HIGHER:
10486 case R_PPC64_ADDR16_HIGHERA:
10487 case R_PPC64_ADDR16_HIGHEST:
10488 case R_PPC64_ADDR16_HIGHESTA:
10489 case R_PPC64_ADDR16_LO:
10490 case R_PPC64_ADDR16_LO_DS:
10491 case R_PPC64_ADDR24:
65f38f15
AM		 10492 case R_PPC64_ADDR32:
10493 case R_PPC64_ADDR64:
10494 case R_PPC64_UADDR16:
10495 case R_PPC64_UADDR32:
10496 case R_PPC64_UADDR64:
ec338859
AM		 10497 /* r_symndx will be zero only for relocs against symbols
10498 from removed linkonce sections, or sections discarded by
10499 a linker script. */
411e1bfb 10500 dodyn:
5d1634d7
AM		 10501 if (r_symndx == 0)
10502 break;
10503 /* Fall thru. */
10504
0b13192e 10505 dodyn2:
5d1634d7 10506 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10507 break;
10508
41bd81ab
AM		 10509 if (NO_OPD_RELOCS && is_opd)
10510 break;
10511
65f38f15 10512 if ((info->shared
4e795f50 10513 && (h == NULL
039b3fef
AM		 10514 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10515 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10516 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10517 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10518 || (ELIMINATE_COPY_RELOCS
10519 && !info->shared
65f38f15 10520 && h != NULL
039b3fef 10521 && h->elf.dynindx != -1
f5385ebf
AM		 10522 && !h->elf.non_got_ref
10523 && h->elf.def_dynamic
10524 && !h->elf.def_regular))
65f38f15
AM		 10525 {
10526 Elf_Internal_Rela outrel;
b34976b6 10527 bfd_boolean skip, relocate;
65f38f15 10528 asection *sreloc;
947216bf 10529 bfd_byte *loc;
1cf1f670 10530 bfd_vma out_off;
65f38f15
AM		 10531
10532 /* When generating a dynamic object, these relocations
10533 are copied into the output file to be resolved at run
10534 time. */
10535
b34976b6
AM		 10536 skip = FALSE;
10537 relocate = FALSE;
65f38f15 10538
1cf1f670
AM		 10539 out_off = _bfd_elf_section_offset (output_bfd, info,
10540 input_section, rel->r_offset);
10541 if (out_off == (bfd_vma) -1)
b34976b6 10542 skip = TRUE;
1cf1f670 10543 else if (out_off == (bfd_vma) -2)
b34976b6 10544 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10545 out_off += (input_section->output_section->vma
10546 + input_section->output_offset);
10547 outrel.r_offset = out_off;
411e1bfb 10548 outrel.r_addend = rel->r_addend;
65f38f15 10549
1cf1f670
AM		 10550 /* Optimize unaligned reloc use. */
10551 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10552 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10553 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10554 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10555 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10556 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10557 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10558 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10559 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10560
65f38f15 10561 if (skip)
0bb2d96a 10562 memset (&outrel, 0, sizeof outrel);
039b3fef 10563 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10564 && !is_opd
10565 && r_type != R_PPC64_TOC)
039b3fef 10566 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10567 else
10568 {
41bd81ab
AM		 10569 /* This symbol is local, or marked to become local,
10570 or this is an opd section reloc which must point
10571 at a local function. */
65f38f15 10572 outrel.r_addend += relocation;
e86ce104 10573 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10574 {
3fad3c7c 10575 if (is_opd && h != NULL)
afbe61cf
AM		 10576 {
10577 /* Lie about opd entries. This case occurs
10578 when building shared libraries and we
10579 reference a function in another shared
3fad3c7c
AM		 10580 lib. The same thing happens for a weak
10581 definition in an application that's
10582 overridden by a strong definition in a
10583 shared lib. (I believe this is a generic
10584 bug in binutils handling of weak syms.)
10585 In these cases we won't use the opd
1e2f5b6e 10586 entry in this lib. */
b34976b6 10587 unresolved_reloc = FALSE;
afbe61cf 10588 }
65f38f15 10589 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10590
10591 /* We need to relocate .opd contents for ld.so.
10592 Prelink also wants simple and consistent rules
10593 for relocs. This make all RELATIVE relocs have
10594 *r_offset equal to r_addend. */
10595 relocate = TRUE;
65f38f15
AM		 10596 }
10597 else
10598 {
10599 long indx = 0;
10600
41bd81ab 10601 if (bfd_is_abs_section (sec))
65f38f15
AM		 10602 ;
10603 else if (sec == NULL || sec->owner == NULL)
10604 {
10605 bfd_set_error (bfd_error_bad_value);
b34976b6 10606 return FALSE;
65f38f15
AM		 10607 }
10608 else
10609 {
10610 asection *osec;
10611
10612 osec = sec->output_section;
10613 indx = elf_section_data (osec)->dynindx;
10614
10615 /* We are turning this relocation into one
10616 against a section symbol, so subtract out
10617 the output section's address but not the
10618 offset of the input section in the output
10619 section. */
10620 outrel.r_addend -= osec->vma;
10621 }
10622
10623 outrel.r_info = ELF64_R_INFO (indx, r_type);
10624 }
10625 }
10626
10627 sreloc = elf_section_data (input_section)->sreloc;
10628 if (sreloc == NULL)
10629 abort ();
10630
947216bf
AM		 10631 loc = sreloc->contents;
10632 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10633 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10634
10635 /* If this reloc is against an external symbol, it will
10636 be computed at runtime, so there's no need to do
81407a69
AM		 10637 anything now. However, for the sake of prelink ensure
10638 that the section contents are a known value. */
65f38f15 10639 if (! relocate)
81407a69
AM		 10640 {
10641 unresolved_reloc = FALSE;
10642 /* The value chosen here is quite arbitrary as ld.so
10643 ignores section contents except for the special
10644 case of .opd where the contents might be accessed
10645 before relocation. Choose zero, as that won't
10646 cause reloc overflow. */
10647 relocation = 0;
10648 addend = 0;
10649 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10650 to improve backward compatibility with older
10651 versions of ld. */
10652 if (r_type == R_PPC64_ADDR64)
10653 addend = outrel.r_addend;
10654 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10655 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10656 addend = (input_section->output_section->vma
10657 + input_section->output_offset
10658 + rel->r_offset);
81407a69 10659 }
65f38f15 10660 }
5bd4f169
AM		 10661 break;
10662
65f38f15
AM		 10663 case R_PPC64_COPY:
10664 case R_PPC64_GLOB_DAT:
10665 case R_PPC64_JMP_SLOT:
10666 case R_PPC64_RELATIVE:
10667 /* We shouldn't ever see these dynamic relocs in relocatable
10668 files. */
ae9a127f 10669 /* Fall through. */
65f38f15
AM		 10670
10671 case R_PPC64_PLTGOT16:
10672 case R_PPC64_PLTGOT16_DS:
10673 case R_PPC64_PLTGOT16_HA:
10674 case R_PPC64_PLTGOT16_HI:
10675 case R_PPC64_PLTGOT16_LO:
10676 case R_PPC64_PLTGOT16_LO_DS:
10677 case R_PPC64_PLTREL32:
10678 case R_PPC64_PLTREL64:
10679 /* These ones haven't been implemented yet. */
10680
10681 (*_bfd_error_handler)
d003868e
AM		 10682 (_("%B: relocation %s is not supported for symbol %s."),
10683 input_bfd,
4ce794b7 10684 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10685
10686 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10687 ret = FALSE;
5bd4f169 10688 continue;
65f38f15 10689 }
5bd4f169 10690
65f38f15
AM		 10691 /* Do any further special processing. */
10692 switch (r_type)
10693 {
10694 default:
10695 break;
10696
10697 case R_PPC64_ADDR16_HA:
10698 case R_PPC64_ADDR16_HIGHERA:
10699 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10700 case R_PPC64_GOT16_HA:
10701 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10702 case R_PPC64_PLT16_HA:
10703 case R_PPC64_TOC16_HA:
10704 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10705 case R_PPC64_TPREL16_HA:
10706 case R_PPC64_DTPREL16_HA:
10707 case R_PPC64_GOT_TLSGD16_HA:
10708 case R_PPC64_GOT_TLSLD16_HA:
10709 case R_PPC64_GOT_TPREL16_HA:
10710 case R_PPC64_GOT_DTPREL16_HA:
10711 case R_PPC64_TPREL16_HIGHER:
10712 case R_PPC64_TPREL16_HIGHERA:
10713 case R_PPC64_TPREL16_HIGHEST:
10714 case R_PPC64_TPREL16_HIGHESTA:
10715 case R_PPC64_DTPREL16_HIGHER:
10716 case R_PPC64_DTPREL16_HIGHERA:
10717 case R_PPC64_DTPREL16_HIGHEST:
10718 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10719 /* It's just possible that this symbol is a weak symbol
10720 that's not actually defined anywhere. In that case,
10721 'sec' would be NULL, and we should leave the symbol
10722 alone (it will be set to zero elsewhere in the link). */
10723 if (sec != NULL)
e515b051
AM		 10724 /* Add 0x10000 if sign bit in 0:15 is set.
10725 Bits 0:15 are not used. */
10726 addend += 0x8000;
65f38f15
AM		 10727 break;
10728
10729 case R_PPC64_ADDR16_DS:
10730 case R_PPC64_ADDR16_LO_DS:
10731 case R_PPC64_GOT16_DS:
10732 case R_PPC64_GOT16_LO_DS:
10733 case R_PPC64_PLT16_LO_DS:
10734 case R_PPC64_SECTOFF_DS:
10735 case R_PPC64_SECTOFF_LO_DS:
10736 case R_PPC64_TOC16_DS:
10737 case R_PPC64_TOC16_LO_DS:
10738 case R_PPC64_PLTGOT16_DS:
10739 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10740 case R_PPC64_GOT_TPREL16_DS:
10741 case R_PPC64_GOT_TPREL16_LO_DS:
10742 case R_PPC64_GOT_DTPREL16_DS:
10743 case R_PPC64_GOT_DTPREL16_LO_DS:
10744 case R_PPC64_TPREL16_DS:
10745 case R_PPC64_TPREL16_LO_DS:
10746 case R_PPC64_DTPREL16_DS:
10747 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10748 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10749 mask = 3;
10750 /* If this reloc is against an lq insn, then the value must be
10751 a multiple of 16. This is somewhat of a hack, but the
10752 "correct" way to do this by defining _DQ forms of all the
10753 _DS relocs bloats all reloc switches in this file. It
10754 doesn't seem to make much sense to use any of these relocs
10755 in data, so testing the insn should be safe. */
494dac0c 10756 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10757 mask = 15;
10758 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10759 {
10760 (*_bfd_error_handler)
d003868e
AM		 10761 (_("%B: error: relocation %s not a multiple of %d"),
10762 input_bfd,
4ce794b7 10763 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10764 mask + 1);
65f38f15 10765 bfd_set_error (bfd_error_bad_value);
b34976b6 10766 ret = FALSE;
65f38f15
AM		 10767 continue;
10768 }
10769 break;
5bd4f169
AM		 10770 }
10771
239e1f3a
AM		 10772 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10773 because such sections are not SEC_ALLOC and thus ld.so will
10774 not process them. */
65f38f15 10775 if (unresolved_reloc
239e1f3a 10776 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10777 && h->elf.def_dynamic))
9c07fe7c
AM		 10778 {
10779 (*_bfd_error_handler)
d003868e
AM		 10780 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10781 input_bfd,
10782 input_section,
9c07fe7c 10783 (long) rel->r_offset,
7b609f53 10784 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10785 h->elf.root.root.string);
b34976b6 10786 ret = FALSE;
9c07fe7c 10787 }
5bd4f169 10788
65f38f15 10789 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10790 input_bfd,
10791 input_section,
10792 contents,
411e1bfb 10793 rel->r_offset,
5bd4f169
AM		 10794 relocation,
10795 addend);
10796
ef60b7ff 10797 if (r != bfd_reloc_ok)
5bd4f169 10798 {
cd27b276
AM		 10799 if (sym_name == NULL)
10800 sym_name = "(null)";
10801 if (r == bfd_reloc_overflow)
5bd4f169 10802 {
cd27b276
AM		 10803 if (warned)
10804 continue;
10805 if (h != NULL
039b3fef 10806 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10807 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10808 {
10809 /* Assume this is a call protected by other code that
10810 detects the symbol is undefined. If this is the case,
10811 we can safely ignore the overflow. If not, the
10812 program is hosed anyway, and a little warning isn't
10813 going to help. */
10814
10815 continue;
10816 }
10817
ef60b7ff 10818 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10819 (info, (h ? &h->elf.root : NULL), sym_name,
10820 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10821 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10822 return FALSE;
ef60b7ff
AM		 10823 }
10824 else
10825 {
10826 (*_bfd_error_handler)
d003868e
AM		 10827 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10828 input_bfd,
10829 input_section,
7b609f53 10830 (long) rel->r_offset,
4ce794b7 10831 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10832 sym_name,
10833 (int) r);
b34976b6 10834 ret = FALSE;
ef60b7ff 10835 }
5bd4f169 10836 }
5bd4f169
AM		 10837 }
10838
645ea6a9
AM		 10839 /* If we're emitting relocations, then shortly after this function
10840 returns, reloc offsets and addends for this section will be
10841 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10842 file rather than the input. Save a copy of the relocs for
10843 opd_entry_value. */
10844 if (is_opd && info->emitrelocations)
10845 {
10846 bfd_size_type amt;
10847 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10848 rel = bfd_alloc (input_bfd, amt);
10849 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10850 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10851 if (rel == NULL)
10852 return FALSE;
10853 memcpy (rel, relocs, amt);
10854 }
5bd4f169
AM		 10855 return ret;
10856}
10857
754021d0
AM		 10858/* Adjust the value of any local symbols in opd sections. */
10859
10860static bfd_boolean
10861ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10862 const char *name ATTRIBUTE_UNUSED,
10863 Elf_Internal_Sym *elfsym,
10864 asection *input_sec,
10865 struct elf_link_hash_entry *h)
10866{
4025353c 10867 long *opd_adjust, adjust;
754021d0
AM		 10868 bfd_vma value;
10869
4025353c
AM		 10870 if (h != NULL)
10871 return TRUE;
10872
10873 opd_adjust = get_opd_info (input_sec);
10874 if (opd_adjust == NULL)
754021d0
AM		 10875 return TRUE;
10876
10877 value = elfsym->st_value - input_sec->output_offset;
10878 if (!info->relocatable)
10879 value -= input_sec->output_section->vma;
10880
3f764659 10881 adjust = opd_adjust[value / 8];
4025353c
AM		 10882 if (adjust == -1)
10883 elfsym->st_value = 0;
10884 else
10885 elfsym->st_value += adjust;
754021d0
AM		 10886 return TRUE;
10887}
10888
5bd4f169
AM		 10889/* Finish up dynamic symbol handling. We set the contents of various
10890 dynamic sections here. */
10891
b34976b6 10892static bfd_boolean
4ce794b7
AM		 10893ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10894 struct bfd_link_info *info,
10895 struct elf_link_hash_entry *h,
10896 Elf_Internal_Sym *sym)
5bd4f169 10897{
65f38f15 10898 struct ppc_link_hash_table *htab;
5bd4f169 10899 bfd *dynobj;
8387904d
AM		 10900 struct plt_entry *ent;
10901 Elf_Internal_Rela rela;
10902 bfd_byte *loc;
5bd4f169 10903
65f38f15
AM		 10904 htab = ppc_hash_table (info);
10905 dynobj = htab->elf.dynobj;
5bd4f169 10906
8387904d
AM		 10907 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10908 if (ent->plt.offset != (bfd_vma) -1)
10909 {
10910 /* This symbol has an entry in the procedure linkage
10911 table. Set it up. */
10912
10913 if (htab->plt == NULL
10914 || htab->relplt == NULL
10915 || htab->glink == NULL)
10916 abort ();
10917
10918 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10919 fill in the PLT entry. */
10920 rela.r_offset = (htab->plt->output_section->vma
10921 + htab->plt->output_offset
10922 + ent->plt.offset);
10923 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10924 rela.r_addend = ent->addend;
10925
10926 loc = htab->relplt->contents;
10927 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10928 * sizeof (Elf64_External_Rela));
10929 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10930 }
5bd4f169 10931
f5385ebf 10932 if (h->needs_copy)
5bd4f169 10933 {
5bd4f169 10934 Elf_Internal_Rela rela;
947216bf 10935 bfd_byte *loc;
5bd4f169 10936
65f38f15 10937 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10938
65f38f15
AM		 10939 if (h->dynindx == -1
10940 || (h->root.type != bfd_link_hash_defined
10941 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10942 || htab->relbss == NULL)
65f38f15 10943 abort ();
5bd4f169
AM		 10944
10945 rela.r_offset = (h->root.u.def.value
10946 + h->root.u.def.section->output_section->vma
10947 + h->root.u.def.section->output_offset);
10948 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10949 rela.r_addend = 0;
4ce794b7
AM		 10950 loc = htab->relbss->contents;
10951 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10952 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10953 }
10954
5bd4f169
AM		 10955 /* Mark some specially defined symbols as absolute. */
10956 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10957 sym->st_shndx = SHN_ABS;
10958
b34976b6 10959 return TRUE;
5bd4f169
AM		 10960}
10961
65f38f15
AM		 10962/* Used to decide how to sort relocs in an optimal manner for the
10963 dynamic linker, before writing them out. */
10964
10965static enum elf_reloc_type_class
4ce794b7 10966ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10967{
04c9666a 10968 enum elf_ppc64_reloc_type r_type;
a33d1f77 10969
4ce794b7 10970 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10971 switch (r_type)
65f38f15
AM		 10972 {
10973 case R_PPC64_RELATIVE:
10974 return reloc_class_relative;
10975 case R_PPC64_JMP_SLOT:
10976 return reloc_class_plt;
10977 case R_PPC64_COPY:
10978 return reloc_class_copy;
10979 default:
10980 return reloc_class_normal;
10981 }
10982}
10983
5bd4f169
AM		 10984/* Finish up the dynamic sections. */
10985
b34976b6 10986static bfd_boolean
4ce794b7
AM		 10987ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10988 struct bfd_link_info *info)
5bd4f169 10989{
65f38f15
AM		 10990 struct ppc_link_hash_table *htab;
10991 bfd *dynobj;
5bd4f169 10992 asection *sdyn;
5bd4f169 10993
65f38f15
AM		 10994 htab = ppc_hash_table (info);
10995 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10996 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10997
65f38f15 10998 if (htab->elf.dynamic_sections_created)
5bd4f169 10999 {
5bd4f169
AM		 11000 Elf64_External_Dyn *dyncon, *dynconend;
11001
4ce794b7 11002 if (sdyn == NULL || htab->got == NULL)
65f38f15 11003 abort ();
5bd4f169
AM		 11004
11005 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11006 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11007 for (; dyncon < dynconend; dyncon++)
11008 {
11009 Elf_Internal_Dyn dyn;
19397422 11010 asection *s;
5bd4f169
AM		 11011
11012 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11013
11014 switch (dyn.d_tag)
11015 {
65f38f15
AM		 11016 default:
11017 continue;
5bd4f169 11018
5d1634d7 11019 case DT_PPC64_GLINK:
4ce794b7 11020 s = htab->glink;
6348e046 11021 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11022 /* We stupidly defined DT_PPC64_GLINK to be the start
11023 of glink rather than the first entry point, which is
11024 what ld.so needs, and now have a bigger stub to
11025 support automatic multiple TOCs. */
11026 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11027 break;
11028
19397422
AM		 11029 case DT_PPC64_OPD:
11030 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11031 if (s == NULL)
11032 continue;
11033 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11034 break;
11035
11036 case DT_PPC64_OPDSZ:
11037 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11038 if (s == NULL)
11039 continue;
eea6121a 11040 dyn.d_un.d_val = s->size;
19397422
AM		 11041 break;
11042
65f38f15 11043 case DT_PLTGOT:
4ce794b7 11044 s = htab->plt;
6348e046 11045 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11046 break;
11047
11048 case DT_JMPREL:
4ce794b7 11049 s = htab->relplt;
6348e046 11050 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11051 break;
5bd4f169 11052
65f38f15 11053 case DT_PLTRELSZ:
eea6121a 11054 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11055 break;
11056
11057 case DT_RELASZ:
11058 /* Don't count procedure linkage table relocs in the
11059 overall reloc count. */
4ce794b7 11060 s = htab->relplt;
6348e046
AM		 11061 if (s == NULL)
11062 continue;
eea6121a 11063 dyn.d_un.d_val -= s->size;
6348e046
AM		 11064 break;
11065
11066 case DT_RELA:
11067 /* We may not be using the standard ELF linker script.
11068 If .rela.plt is the first .rela section, we adjust
11069 DT_RELA to not include it. */
4ce794b7 11070 s = htab->relplt;
6348e046
AM		 11071 if (s == NULL)
11072 continue;
11073 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11074 continue;
eea6121a 11075 dyn.d_un.d_ptr += s->size;
65f38f15 11076 break;
5bd4f169 11077 }
5bd4f169 11078
65f38f15 11079 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11080 }
5bd4f169
AM		 11081 }
11082
eea6121a 11083 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11084 {
11085 /* Fill in the first entry in the global offset table.
11086 We use it to hold the link-time TOCbase. */
11087 bfd_put_64 (output_bfd,
60ee0d4a 11088 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11089 htab->got->contents);
5d1634d7
AM		 11090
11091 /* Set .got entry size. */
4ce794b7 11092 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11093 }
11094
eea6121a 11095 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11096 {
11097 /* Set .plt entry size. */
4ce794b7 11098 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11099 = PLT_ENTRY_SIZE;
11100 }
11101
e717da7e 11102 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11103 since we didn't add them to DYNOBJ. We know dynobj is the first
11104 bfd. */
e717da7e
AM		 11105 while ((dynobj = dynobj->link_next) != NULL)
11106 {
11107 asection *s;
7b53ace3 11108
ee75fd95 11109 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 11110 continue;
11111
e717da7e
AM		 11112 s = ppc64_elf_tdata (dynobj)->got;
11113 if (s != NULL
eea6121a 11114 && s->size != 0
e717da7e
AM		 11115 && s->output_section != bfd_abs_section_ptr
11116 && !bfd_set_section_contents (output_bfd, s->output_section,
11117 s->contents, s->output_offset,
eea6121a 11118 s->size))
e717da7e
AM		 11119 return FALSE;
11120 s = ppc64_elf_tdata (dynobj)->relgot;
11121 if (s != NULL
eea6121a 11122 && s->size != 0
e717da7e
AM		 11123 && s->output_section != bfd_abs_section_ptr
11124 && !bfd_set_section_contents (output_bfd, s->output_section,
11125 s->contents, s->output_offset,
eea6121a 11126 s->size))
e717da7e
AM		 11127 return FALSE;
11128 }
f6c52c13 11129
b34976b6 11130 return TRUE;
5bd4f169
AM		 11131}
11132
5bd4f169 11133#include "elf64-target.h"
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