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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
b2a8e766
AM		 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
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.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 **);
805fc799 38static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
5bd4f169
AM		 52
53
ad8e1ba5
AM		 54#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
55#define TARGET_LITTLE_NAME "elf64-powerpcle"
56#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
57#define TARGET_BIG_NAME "elf64-powerpc"
58#define ELF_ARCH bfd_arch_powerpc
59#define ELF_MACHINE_CODE EM_PPC64
60#define ELF_MAXPAGESIZE 0x10000
61#define elf_info_to_howto ppc64_elf_info_to_howto
62
63#define elf_backend_want_got_sym 0
64#define elf_backend_want_plt_sym 0
65#define elf_backend_plt_alignment 3
66#define elf_backend_plt_not_loaded 1
67#define elf_backend_got_symbol_offset 0
68#define elf_backend_got_header_size 8
ad8e1ba5
AM		 69#define elf_backend_can_gc_sections 1
70#define elf_backend_can_refcount 1
71#define elf_backend_rela_normal 1
72
e717da7e 73#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 74#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
75#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
76#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
77#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
78#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
79
80#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 81#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
82#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 83#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
84#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 85#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
ad8e1ba5
AM		 86#define elf_backend_check_relocs ppc64_elf_check_relocs
87#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
88#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
89#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
90#define elf_backend_hide_symbol ppc64_elf_hide_symbol
91#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
92#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
93#define elf_backend_relocate_section ppc64_elf_relocate_section
94#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
95#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
96#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 97#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
2f89ff8d 98#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 99
5bd4f169
AM		 100/* The name of the dynamic interpreter. This is put in the .interp
101 section. */
102#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
103
104/* The size in bytes of an entry in the procedure linkage table. */
105#define PLT_ENTRY_SIZE 24
106
107/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 108#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 109
110/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 111#define TOC_BASE_OFF 0x8000
112
113/* Offset of tp and dtp pointers from start of TLS block. */
114#define TP_OFFSET 0x7000
115#define DTP_OFFSET 0x8000
5bd4f169 116
ad8e1ba5
AM		 117/* .plt call stub instructions. The normal stub is like this, but
118 sometimes the .plt entry crosses a 64k boundary and we need to
119 insert an addis to adjust r12. */
120#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 121#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
122#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
123#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
124#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
125#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
126 /* ld %r11,xxx+16@l(%r12) */
127#define BCTR 0x4e800420 /* bctr */
128
5d1634d7 129
ad8e1ba5
AM		 130#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
131#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
132
133#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
134
135/* glink call stub instructions. We enter with the index in R0, and the
136 address of glink entry in CTR. From that, we can calculate PLT0. */
137#define GLINK_CALL_STUB_SIZE (16*4)
138#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
139#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
140#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
141#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
142#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
143#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
144#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
145 /* sub %r12,%r12,%r11 */
146#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
147#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
148 /* ld %r11,xxx@l(%r12) */
149#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
150 /* ld %r2,8(%r12) */
151 /* mtctr %r11 */
152 /* ld %r11,16(%r12) */
153 /* bctr */
5d1634d7
AM		 154
155/* Pad with this. */
156#define NOP 0x60000000
157
721956f4
AM		 158/* Some other nops. */
159#define CROR_151515 0x4def7b82
160#define CROR_313131 0x4ffffb82
161
cedb70c5 162/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 163#define LI_R0_0 0x38000000 /* li %r0,0 */
164#define B_DOT 0x48000000 /* b . */
165
166/* After that, we need two instructions to load the index, followed by
167 a branch. */
168#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 169#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 170
82bd7b59
AM		 171/* Instructions to save and restore floating point regs. */
172#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
173#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
174#define BLR 0x4e800020 /* blr */
175
41bd81ab
AM		 176/* Since .opd is an array of descriptors and each entry will end up
177 with identical R_PPC64_RELATIVE relocs, there is really no need to
178 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 179 relocate .opd without reloc entries. */
41bd81ab
AM		 180#ifndef NO_OPD_RELOCS
181#define NO_OPD_RELOCS 0
182#endif
5bd4f169 183\f
f5e87a1d 184#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 185
5bd4f169 186/* Relocation HOWTO's. */
04c9666a 187static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 188
189static reloc_howto_type ppc64_elf_howto_raw[] = {
190 /* This reloc does nothing. */
191 HOWTO (R_PPC64_NONE, /* type */
192 0, /* rightshift */
411e1bfb
AM		 193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 32, /* bitsize */
b34976b6 195 FALSE, /* pc_relative */
5bd4f169 196 0, /* bitpos */
f5e87a1d 197 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 198 bfd_elf_generic_reloc, /* special_function */
199 "R_PPC64_NONE", /* name */
b34976b6 200 FALSE, /* partial_inplace */
d006db6c 201 0, /* src_mask */
5bd4f169 202 0, /* dst_mask */
b34976b6 203 FALSE), /* pcrel_offset */
5bd4f169
AM		 204
205 /* A standard 32 bit relocation. */
206 HOWTO (R_PPC64_ADDR32, /* type */
207 0, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 32, /* bitsize */
b34976b6 210 FALSE, /* pc_relative */
5bd4f169
AM		 211 0, /* bitpos */
212 complain_overflow_bitfield, /* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_PPC64_ADDR32", /* name */
b34976b6 215 FALSE, /* partial_inplace */
5bd4f169
AM		 216 0, /* src_mask */
217 0xffffffff, /* dst_mask */
b34976b6 218 FALSE), /* pcrel_offset */
5bd4f169
AM		 219
220 /* An absolute 26 bit branch; the lower two bits must be zero.
221 FIXME: we don't check that, we just clear them. */
222 HOWTO (R_PPC64_ADDR24, /* type */
223 0, /* rightshift */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
225 26, /* bitsize */
b34976b6 226 FALSE, /* pc_relative */
5bd4f169
AM		 227 0, /* bitpos */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC64_ADDR24", /* name */
b34976b6 231 FALSE, /* partial_inplace */
d006db6c 232 0, /* src_mask */
f5e87a1d 233 0x03fffffc, /* dst_mask */
b34976b6 234 FALSE), /* pcrel_offset */
5bd4f169
AM		 235
236 /* A standard 16 bit relocation. */
237 HOWTO (R_PPC64_ADDR16, /* type */
238 0, /* rightshift */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
240 16, /* bitsize */
b34976b6 241 FALSE, /* pc_relative */
5bd4f169
AM		 242 0, /* bitpos */
243 complain_overflow_bitfield, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_PPC64_ADDR16", /* name */
b34976b6 246 FALSE, /* partial_inplace */
5bd4f169
AM		 247 0, /* src_mask */
248 0xffff, /* dst_mask */
b34976b6 249 FALSE), /* pcrel_offset */
5bd4f169
AM		 250
251 /* A 16 bit relocation without overflow. */
252 HOWTO (R_PPC64_ADDR16_LO, /* type */
253 0, /* rightshift */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
255 16, /* bitsize */
b34976b6 256 FALSE, /* pc_relative */
5bd4f169
AM		 257 0, /* bitpos */
258 complain_overflow_dont,/* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC64_ADDR16_LO", /* name */
b34976b6 261 FALSE, /* partial_inplace */
5bd4f169
AM		 262 0, /* src_mask */
263 0xffff, /* dst_mask */
b34976b6 264 FALSE), /* pcrel_offset */
5bd4f169
AM		 265
266 /* Bits 16-31 of an address. */
267 HOWTO (R_PPC64_ADDR16_HI, /* type */
268 16, /* rightshift */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
b34976b6 271 FALSE, /* pc_relative */
5bd4f169
AM		 272 0, /* bitpos */
273 complain_overflow_dont, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC64_ADDR16_HI", /* name */
b34976b6 276 FALSE, /* partial_inplace */
5bd4f169
AM		 277 0, /* src_mask */
278 0xffff, /* dst_mask */
b34976b6 279 FALSE), /* pcrel_offset */
5bd4f169
AM		 280
281 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
282 bits, treated as a signed number, is negative. */
283 HOWTO (R_PPC64_ADDR16_HA, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
b34976b6 287 FALSE, /* pc_relative */
5bd4f169
AM		 288 0, /* bitpos */
289 complain_overflow_dont, /* complain_on_overflow */
805fc799 290 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 291 "R_PPC64_ADDR16_HA", /* name */
b34976b6 292 FALSE, /* partial_inplace */
5bd4f169
AM		 293 0, /* src_mask */
294 0xffff, /* dst_mask */
b34976b6 295 FALSE), /* pcrel_offset */
5bd4f169
AM		 296
297 /* An absolute 16 bit branch; the lower two bits must be zero.
298 FIXME: we don't check that, we just clear them. */
299 HOWTO (R_PPC64_ADDR14, /* type */
300 0, /* rightshift */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
302 16, /* bitsize */
b34976b6 303 FALSE, /* pc_relative */
5bd4f169
AM		 304 0, /* bitpos */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC64_ADDR14", /* name */
b34976b6 308 FALSE, /* partial_inplace */
d006db6c 309 0, /* src_mask */
f5e87a1d 310 0x0000fffc, /* dst_mask */
b34976b6 311 FALSE), /* pcrel_offset */
5bd4f169
AM		 312
313 /* An absolute 16 bit branch, for which bit 10 should be set to
314 indicate that the branch is expected to be taken. The lower two
315 bits must be zero. */
316 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
317 0, /* rightshift */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
319 16, /* bitsize */
b34976b6 320 FALSE, /* pc_relative */
5bd4f169
AM		 321 0, /* bitpos */
322 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 323 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 324 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 325 FALSE, /* partial_inplace */
d006db6c 326 0, /* src_mask */
f5e87a1d 327 0x0000fffc, /* dst_mask */
b34976b6 328 FALSE), /* pcrel_offset */
5bd4f169
AM		 329
330 /* An absolute 16 bit branch, for which bit 10 should be set to
331 indicate that the branch is not expected to be taken. The lower
332 two bits must be zero. */
333 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 16, /* bitsize */
b34976b6 337 FALSE, /* pc_relative */
5bd4f169
AM		 338 0, /* bitpos */
339 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 340 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 341 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 342 FALSE, /* partial_inplace */
d006db6c 343 0, /* src_mask */
f5e87a1d 344 0x0000fffc, /* dst_mask */
b34976b6 345 FALSE), /* pcrel_offset */
5bd4f169
AM		 346
347 /* A relative 26 bit branch; the lower two bits must be zero. */
348 HOWTO (R_PPC64_REL24, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 26, /* bitsize */
b34976b6 352 TRUE, /* pc_relative */
5bd4f169
AM		 353 0, /* bitpos */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC64_REL24", /* name */
b34976b6 357 FALSE, /* partial_inplace */
d006db6c 358 0, /* src_mask */
f5e87a1d 359 0x03fffffc, /* dst_mask */
b34976b6 360 TRUE), /* pcrel_offset */
5bd4f169
AM		 361
362 /* A relative 16 bit branch; the lower two bits must be zero. */
363 HOWTO (R_PPC64_REL14, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 16, /* bitsize */
b34976b6 367 TRUE, /* pc_relative */
5bd4f169
AM		 368 0, /* bitpos */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC64_REL14", /* name */
b34976b6 372 FALSE, /* partial_inplace */
d006db6c 373 0, /* src_mask */
f5e87a1d 374 0x0000fffc, /* dst_mask */
b34976b6 375 TRUE), /* pcrel_offset */
5bd4f169
AM		 376
377 /* A relative 16 bit branch. Bit 10 should be set to indicate that
378 the branch is expected to be taken. The lower two bits must be
379 zero. */
380 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
381 0, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
b34976b6 384 TRUE, /* pc_relative */
5bd4f169
AM		 385 0, /* bitpos */
386 complain_overflow_signed, /* complain_on_overflow */
805fc799 387 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 388 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 389 FALSE, /* partial_inplace */
d006db6c 390 0, /* src_mask */
f5e87a1d 391 0x0000fffc, /* dst_mask */
b34976b6 392 TRUE), /* pcrel_offset */
5bd4f169
AM		 393
394 /* A relative 16 bit branch. Bit 10 should be set to indicate that
395 the branch is not expected to be taken. The lower two bits must
396 be zero. */
397 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 16, /* bitsize */
b34976b6 401 TRUE, /* pc_relative */
5bd4f169
AM		 402 0, /* bitpos */
403 complain_overflow_signed, /* complain_on_overflow */
805fc799 404 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 405 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 406 FALSE, /* partial_inplace */
d006db6c 407 0, /* src_mask */
f5e87a1d 408 0x0000fffc, /* dst_mask */
b34976b6 409 TRUE), /* pcrel_offset */
5bd4f169
AM		 410
411 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
412 symbol. */
413 HOWTO (R_PPC64_GOT16, /* type */
414 0, /* rightshift */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
416 16, /* bitsize */
b34976b6 417 FALSE, /* pc_relative */
5bd4f169
AM		 418 0, /* bitpos */
419 complain_overflow_signed, /* complain_on_overflow */
805fc799 420 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 421 "R_PPC64_GOT16", /* name */
b34976b6 422 FALSE, /* partial_inplace */
5bd4f169
AM		 423 0, /* src_mask */
424 0xffff, /* dst_mask */
b34976b6 425 FALSE), /* pcrel_offset */
5bd4f169
AM		 426
427 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
428 the symbol. */
429 HOWTO (R_PPC64_GOT16_LO, /* type */
430 0, /* rightshift */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
432 16, /* bitsize */
b34976b6 433 FALSE, /* pc_relative */
5bd4f169
AM		 434 0, /* bitpos */
435 complain_overflow_dont, /* complain_on_overflow */
805fc799 436 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 437 "R_PPC64_GOT16_LO", /* name */
b34976b6 438 FALSE, /* partial_inplace */
5bd4f169
AM		 439 0, /* src_mask */
440 0xffff, /* dst_mask */
b34976b6 441 FALSE), /* pcrel_offset */
5bd4f169
AM		 442
443 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
444 the symbol. */
445 HOWTO (R_PPC64_GOT16_HI, /* type */
446 16, /* rightshift */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
448 16, /* bitsize */
b34976b6 449 FALSE, /* pc_relative */
5bd4f169
AM		 450 0, /* bitpos */
451 complain_overflow_dont,/* complain_on_overflow */
805fc799 452 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 453 "R_PPC64_GOT16_HI", /* name */
b34976b6 454 FALSE, /* partial_inplace */
5bd4f169
AM		 455 0, /* src_mask */
456 0xffff, /* dst_mask */
b34976b6 457 FALSE), /* pcrel_offset */
5bd4f169
AM		 458
459 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
460 the symbol. */
461 HOWTO (R_PPC64_GOT16_HA, /* type */
462 16, /* rightshift */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
464 16, /* bitsize */
b34976b6 465 FALSE, /* pc_relative */
5bd4f169
AM		 466 0, /* bitpos */
467 complain_overflow_dont,/* complain_on_overflow */
805fc799 468 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 469 "R_PPC64_GOT16_HA", /* name */
b34976b6 470 FALSE, /* partial_inplace */
5bd4f169
AM		 471 0, /* src_mask */
472 0xffff, /* dst_mask */
b34976b6 473 FALSE), /* pcrel_offset */
5bd4f169
AM		 474
475 /* This is used only by the dynamic linker. The symbol should exist
476 both in the object being run and in some shared library. The
477 dynamic linker copies the data addressed by the symbol from the
478 shared library into the object, because the object being
479 run has to have the data at some particular address. */
480 HOWTO (R_PPC64_COPY, /* type */
481 0, /* rightshift */
f5e87a1d
AM		 482 0, /* this one is variable size */
483 0, /* bitsize */
b34976b6 484 FALSE, /* pc_relative */
5bd4f169 485 0, /* bitpos */
f5e87a1d
AM		 486 complain_overflow_dont, /* complain_on_overflow */
487 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 488 "R_PPC64_COPY", /* name */
b34976b6 489 FALSE, /* partial_inplace */
5bd4f169
AM		 490 0, /* src_mask */
491 0, /* dst_mask */
b34976b6 492 FALSE), /* pcrel_offset */
5bd4f169
AM		 493
494 /* Like R_PPC64_ADDR64, but used when setting global offset table
495 entries. */
496 HOWTO (R_PPC64_GLOB_DAT, /* type */
497 0, /* rightshift */
498 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
499 64, /* bitsize */
b34976b6 500 FALSE, /* pc_relative */
5bd4f169
AM		 501 0, /* bitpos */
502 complain_overflow_dont, /* complain_on_overflow */
805fc799 503 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 504 "R_PPC64_GLOB_DAT", /* name */
b34976b6 505 FALSE, /* partial_inplace */
5bd4f169 506 0, /* src_mask */
f5e87a1d 507 ONES (64), /* dst_mask */
b34976b6 508 FALSE), /* pcrel_offset */
5bd4f169
AM		 509
510 /* Created by the link editor. Marks a procedure linkage table
511 entry for a symbol. */
512 HOWTO (R_PPC64_JMP_SLOT, /* type */
513 0, /* rightshift */
514 0, /* size (0 = byte, 1 = short, 2 = long) */
515 0, /* bitsize */
b34976b6 516 FALSE, /* pc_relative */
5bd4f169
AM		 517 0, /* bitpos */
518 complain_overflow_dont, /* complain_on_overflow */
805fc799 519 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 520 "R_PPC64_JMP_SLOT", /* name */
b34976b6 521 FALSE, /* partial_inplace */
5bd4f169
AM		 522 0, /* src_mask */
523 0, /* dst_mask */
b34976b6 524 FALSE), /* pcrel_offset */
5bd4f169
AM		 525
526 /* Used only by the dynamic linker. When the object is run, this
527 doubleword64 is set to the load address of the object, plus the
528 addend. */
529 HOWTO (R_PPC64_RELATIVE, /* type */
530 0, /* rightshift */
531 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
532 64, /* bitsize */
b34976b6 533 FALSE, /* pc_relative */
5bd4f169
AM		 534 0, /* bitpos */
535 complain_overflow_dont, /* complain_on_overflow */
536 bfd_elf_generic_reloc, /* special_function */
537 "R_PPC64_RELATIVE", /* name */
b34976b6 538 FALSE, /* partial_inplace */
5bd4f169 539 0, /* src_mask */
f5e87a1d 540 ONES (64), /* dst_mask */
b34976b6 541 FALSE), /* pcrel_offset */
5bd4f169
AM		 542
543 /* Like R_PPC64_ADDR32, but may be unaligned. */
544 HOWTO (R_PPC64_UADDR32, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 32, /* bitsize */
b34976b6 548 FALSE, /* pc_relative */
5bd4f169
AM		 549 0, /* bitpos */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC64_UADDR32", /* name */
b34976b6 553 FALSE, /* partial_inplace */
5bd4f169
AM		 554 0, /* src_mask */
555 0xffffffff, /* dst_mask */
b34976b6 556 FALSE), /* pcrel_offset */
5bd4f169
AM		 557
558 /* Like R_PPC64_ADDR16, but may be unaligned. */
559 HOWTO (R_PPC64_UADDR16, /* type */
560 0, /* rightshift */
561 1, /* size (0 = byte, 1 = short, 2 = long) */
562 16, /* bitsize */
b34976b6 563 FALSE, /* pc_relative */
5bd4f169
AM		 564 0, /* bitpos */
565 complain_overflow_bitfield, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC64_UADDR16", /* name */
b34976b6 568 FALSE, /* partial_inplace */
5bd4f169
AM		 569 0, /* src_mask */
570 0xffff, /* dst_mask */
b34976b6 571 FALSE), /* pcrel_offset */
5bd4f169
AM		 572
573 /* 32-bit PC relative. */
574 HOWTO (R_PPC64_REL32, /* type */
575 0, /* rightshift */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
577 32, /* bitsize */
b34976b6 578 TRUE, /* pc_relative */
5bd4f169 579 0, /* bitpos */
cedb70c5 580 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 581 complain_overflow_signed, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_PPC64_REL32", /* name */
b34976b6 584 FALSE, /* partial_inplace */
5bd4f169
AM		 585 0, /* src_mask */
586 0xffffffff, /* dst_mask */
b34976b6 587 TRUE), /* pcrel_offset */
5bd4f169 588
10ed1bba 589 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 590 HOWTO (R_PPC64_PLT32, /* type */
591 0, /* rightshift */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
593 32, /* bitsize */
b34976b6 594 FALSE, /* pc_relative */
5bd4f169
AM		 595 0, /* bitpos */
596 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 597 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 598 "R_PPC64_PLT32", /* name */
b34976b6 599 FALSE, /* partial_inplace */
5bd4f169 600 0, /* src_mask */
f5e87a1d 601 0xffffffff, /* dst_mask */
b34976b6 602 FALSE), /* pcrel_offset */
5bd4f169
AM		 603
604 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
605 FIXME: R_PPC64_PLTREL32 not supported. */
606 HOWTO (R_PPC64_PLTREL32, /* type */
607 0, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 32, /* bitsize */
b34976b6 610 TRUE, /* pc_relative */
5bd4f169
AM		 611 0, /* bitpos */
612 complain_overflow_signed, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC64_PLTREL32", /* name */
b34976b6 615 FALSE, /* partial_inplace */
5bd4f169 616 0, /* src_mask */
f5e87a1d 617 0xffffffff, /* dst_mask */
b34976b6 618 TRUE), /* pcrel_offset */
5bd4f169
AM		 619
620 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
621 the symbol. */
622 HOWTO (R_PPC64_PLT16_LO, /* type */
623 0, /* rightshift */
624 1, /* size (0 = byte, 1 = short, 2 = long) */
625 16, /* bitsize */
b34976b6 626 FALSE, /* pc_relative */
5bd4f169
AM		 627 0, /* bitpos */
628 complain_overflow_dont, /* complain_on_overflow */
805fc799 629 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 630 "R_PPC64_PLT16_LO", /* name */
b34976b6 631 FALSE, /* partial_inplace */
5bd4f169
AM		 632 0, /* src_mask */
633 0xffff, /* dst_mask */
b34976b6 634 FALSE), /* pcrel_offset */
5bd4f169
AM		 635
636 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
637 the symbol. */
638 HOWTO (R_PPC64_PLT16_HI, /* type */
639 16, /* rightshift */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
641 16, /* bitsize */
b34976b6 642 FALSE, /* pc_relative */
5bd4f169
AM		 643 0, /* bitpos */
644 complain_overflow_dont, /* complain_on_overflow */
805fc799 645 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 646 "R_PPC64_PLT16_HI", /* name */
b34976b6 647 FALSE, /* partial_inplace */
5bd4f169
AM		 648 0, /* src_mask */
649 0xffff, /* dst_mask */
b34976b6 650 FALSE), /* pcrel_offset */
5bd4f169
AM		 651
652 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
653 the symbol. */
654 HOWTO (R_PPC64_PLT16_HA, /* type */
655 16, /* rightshift */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
657 16, /* bitsize */
b34976b6 658 FALSE, /* pc_relative */
5bd4f169
AM		 659 0, /* bitpos */
660 complain_overflow_dont, /* complain_on_overflow */
805fc799 661 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 662 "R_PPC64_PLT16_HA", /* name */
b34976b6 663 FALSE, /* partial_inplace */
5bd4f169
AM		 664 0, /* src_mask */
665 0xffff, /* dst_mask */
b34976b6 666 FALSE), /* pcrel_offset */
5bd4f169 667
c061c2d8 668 /* 16-bit section relative relocation. */
5bd4f169
AM		 669 HOWTO (R_PPC64_SECTOFF, /* type */
670 0, /* rightshift */
c061c2d8
AM		 671 1, /* size (0 = byte, 1 = short, 2 = long) */
672 16, /* bitsize */
b34976b6 673 FALSE, /* pc_relative */
5bd4f169
AM		 674 0, /* bitpos */
675 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 676 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 677 "R_PPC64_SECTOFF", /* name */
b34976b6 678 FALSE, /* partial_inplace */
5bd4f169 679 0, /* src_mask */
c061c2d8 680 0xffff, /* dst_mask */
b34976b6 681 FALSE), /* pcrel_offset */
5bd4f169 682
c061c2d8 683 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 684 HOWTO (R_PPC64_SECTOFF_LO, /* type */
685 0, /* rightshift */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
687 16, /* bitsize */
b34976b6 688 FALSE, /* pc_relative */
5bd4f169
AM		 689 0, /* bitpos */
690 complain_overflow_dont, /* complain_on_overflow */
805fc799 691 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 692 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 693 FALSE, /* partial_inplace */
5bd4f169
AM		 694 0, /* src_mask */
695 0xffff, /* dst_mask */
b34976b6 696 FALSE), /* pcrel_offset */
5bd4f169
AM		 697
698 /* 16-bit upper half section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF_HI, /* type */
700 16, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
b34976b6 703 FALSE, /* pc_relative */
5bd4f169
AM		 704 0, /* bitpos */
705 complain_overflow_dont, /* complain_on_overflow */
805fc799 706 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 707 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 708 FALSE, /* partial_inplace */
5bd4f169
AM		 709 0, /* src_mask */
710 0xffff, /* dst_mask */
b34976b6 711 FALSE), /* pcrel_offset */
5bd4f169
AM		 712
713 /* 16-bit upper half adjusted section relative relocation. */
714 HOWTO (R_PPC64_SECTOFF_HA, /* type */
715 16, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
b34976b6 718 FALSE, /* pc_relative */
5bd4f169
AM		 719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
805fc799 721 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 722 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 723 FALSE, /* partial_inplace */
5bd4f169
AM		 724 0, /* src_mask */
725 0xffff, /* dst_mask */
b34976b6 726 FALSE), /* pcrel_offset */
5bd4f169 727
04c9666a
AM		 728 /* Like R_PPC64_REL24 without touching the two least significant bits. */
729 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 730 2, /* rightshift */
731 2, /* size (0 = byte, 1 = short, 2 = long) */
732 30, /* bitsize */
b34976b6 733 TRUE, /* pc_relative */
5bd4f169
AM		 734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
04c9666a 737 "R_PPC64_REL30", /* name */
b34976b6 738 FALSE, /* partial_inplace */
d006db6c 739 0, /* src_mask */
5bd4f169 740 0xfffffffc, /* dst_mask */
b34976b6 741 TRUE), /* pcrel_offset */
5bd4f169
AM		 742
743 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
744
745 /* A standard 64-bit relocation. */
746 HOWTO (R_PPC64_ADDR64, /* type */
747 0, /* rightshift */
748 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
749 64, /* bitsize */
b34976b6 750 FALSE, /* pc_relative */
5bd4f169
AM		 751 0, /* bitpos */
752 complain_overflow_dont, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_PPC64_ADDR64", /* name */
b34976b6 755 FALSE, /* partial_inplace */
5bd4f169 756 0, /* src_mask */
f5e87a1d 757 ONES (64), /* dst_mask */
b34976b6 758 FALSE), /* pcrel_offset */
5bd4f169
AM		 759
760 /* The bits 32-47 of an address. */
761 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
762 32, /* rightshift */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
b34976b6 765 FALSE, /* pc_relative */
5bd4f169
AM		 766 0, /* bitpos */
767 complain_overflow_dont, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 770 FALSE, /* partial_inplace */
5bd4f169
AM		 771 0, /* src_mask */
772 0xffff, /* dst_mask */
b34976b6 773 FALSE), /* pcrel_offset */
5bd4f169
AM		 774
775 /* The bits 32-47 of an address, plus 1 if the contents of the low
776 16 bits, treated as a signed number, is negative. */
777 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
778 32, /* rightshift */
779 1, /* size (0 = byte, 1 = short, 2 = long) */
780 16, /* bitsize */
b34976b6 781 FALSE, /* pc_relative */
5bd4f169
AM		 782 0, /* bitpos */
783 complain_overflow_dont, /* complain_on_overflow */
805fc799 784 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 785 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 786 FALSE, /* partial_inplace */
5bd4f169
AM		 787 0, /* src_mask */
788 0xffff, /* dst_mask */
b34976b6 789 FALSE), /* pcrel_offset */
5bd4f169
AM		 790
791 /* The bits 48-63 of an address. */
792 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
793 48, /* rightshift */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
795 16, /* bitsize */
b34976b6 796 FALSE, /* pc_relative */
5bd4f169
AM		 797 0, /* bitpos */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 801 FALSE, /* partial_inplace */
5bd4f169
AM		 802 0, /* src_mask */
803 0xffff, /* dst_mask */
b34976b6 804 FALSE), /* pcrel_offset */
5bd4f169
AM		 805
806 /* The bits 48-63 of an address, plus 1 if the contents of the low
807 16 bits, treated as a signed number, is negative. */
808 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
809 48, /* rightshift */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
811 16, /* bitsize */
b34976b6 812 FALSE, /* pc_relative */
5bd4f169
AM		 813 0, /* bitpos */
814 complain_overflow_dont, /* complain_on_overflow */
805fc799 815 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 816 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 817 FALSE, /* partial_inplace */
5bd4f169
AM		 818 0, /* src_mask */
819 0xffff, /* dst_mask */
b34976b6 820 FALSE), /* pcrel_offset */
5bd4f169
AM		 821
822 /* Like ADDR64, but may be unaligned. */
823 HOWTO (R_PPC64_UADDR64, /* type */
824 0, /* rightshift */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
826 64, /* bitsize */
b34976b6 827 FALSE, /* pc_relative */
5bd4f169
AM		 828 0, /* bitpos */
829 complain_overflow_dont, /* complain_on_overflow */
830 bfd_elf_generic_reloc, /* special_function */
831 "R_PPC64_UADDR64", /* name */
b34976b6 832 FALSE, /* partial_inplace */
5bd4f169 833 0, /* src_mask */
f5e87a1d 834 ONES (64), /* dst_mask */
b34976b6 835 FALSE), /* pcrel_offset */
5bd4f169
AM		 836
837 /* 64-bit relative relocation. */
838 HOWTO (R_PPC64_REL64, /* type */
839 0, /* rightshift */
840 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 64, /* bitsize */
b34976b6 842 TRUE, /* pc_relative */
5bd4f169
AM		 843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_REL64", /* name */
b34976b6 847 FALSE, /* partial_inplace */
5bd4f169 848 0, /* src_mask */
f5e87a1d 849 ONES (64), /* dst_mask */
b34976b6 850 TRUE), /* pcrel_offset */
5bd4f169 851
cedb70c5 852 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 853 HOWTO (R_PPC64_PLT64, /* type */
854 0, /* rightshift */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 64, /* bitsize */
b34976b6 857 FALSE, /* pc_relative */
5bd4f169
AM		 858 0, /* bitpos */
859 complain_overflow_dont, /* complain_on_overflow */
805fc799 860 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 861 "R_PPC64_PLT64", /* name */
b34976b6 862 FALSE, /* partial_inplace */
5bd4f169 863 0, /* src_mask */
f5e87a1d 864 ONES (64), /* dst_mask */
b34976b6 865 FALSE), /* pcrel_offset */
5bd4f169
AM		 866
867 /* 64-bit PC relative relocation to the symbol's procedure linkage
868 table. */
869 /* FIXME: R_PPC64_PLTREL64 not supported. */
870 HOWTO (R_PPC64_PLTREL64, /* type */
871 0, /* rightshift */
872 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
873 64, /* bitsize */
b34976b6 874 TRUE, /* pc_relative */
5bd4f169
AM		 875 0, /* bitpos */
876 complain_overflow_dont, /* complain_on_overflow */
805fc799 877 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 878 "R_PPC64_PLTREL64", /* name */
b34976b6 879 FALSE, /* partial_inplace */
5bd4f169 880 0, /* src_mask */
f5e87a1d 881 ONES (64), /* dst_mask */
b34976b6 882 TRUE), /* pcrel_offset */
5bd4f169
AM		 883
884 /* 16 bit TOC-relative relocation. */
885
886 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
887 HOWTO (R_PPC64_TOC16, /* type */
888 0, /* rightshift */
889 1, /* size (0 = byte, 1 = short, 2 = long) */
890 16, /* bitsize */
b34976b6 891 FALSE, /* pc_relative */
5bd4f169
AM		 892 0, /* bitpos */
893 complain_overflow_signed, /* complain_on_overflow */
805fc799 894 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 895 "R_PPC64_TOC16", /* name */
b34976b6 896 FALSE, /* partial_inplace */
5bd4f169
AM		 897 0, /* src_mask */
898 0xffff, /* dst_mask */
b34976b6 899 FALSE), /* pcrel_offset */
5bd4f169
AM		 900
901 /* 16 bit TOC-relative relocation without overflow. */
902
903 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
904 HOWTO (R_PPC64_TOC16_LO, /* type */
905 0, /* rightshift */
906 1, /* size (0 = byte, 1 = short, 2 = long) */
907 16, /* bitsize */
b34976b6 908 FALSE, /* pc_relative */
5bd4f169
AM		 909 0, /* bitpos */
910 complain_overflow_dont, /* complain_on_overflow */
805fc799 911 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 912 "R_PPC64_TOC16_LO", /* name */
b34976b6 913 FALSE, /* partial_inplace */
5bd4f169
AM		 914 0, /* src_mask */
915 0xffff, /* dst_mask */
b34976b6 916 FALSE), /* pcrel_offset */
5bd4f169
AM		 917
918 /* 16 bit TOC-relative relocation, high 16 bits. */
919
920 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
921 HOWTO (R_PPC64_TOC16_HI, /* type */
922 16, /* rightshift */
923 1, /* size (0 = byte, 1 = short, 2 = long) */
924 16, /* bitsize */
b34976b6 925 FALSE, /* pc_relative */
5bd4f169
AM		 926 0, /* bitpos */
927 complain_overflow_dont, /* complain_on_overflow */
805fc799 928 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 929 "R_PPC64_TOC16_HI", /* name */
b34976b6 930 FALSE, /* partial_inplace */
5bd4f169
AM		 931 0, /* src_mask */
932 0xffff, /* dst_mask */
b34976b6 933 FALSE), /* pcrel_offset */
5bd4f169
AM		 934
935 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
936 contents of the low 16 bits, treated as a signed number, is
937 negative. */
938
939 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
940 HOWTO (R_PPC64_TOC16_HA, /* type */
941 16, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
b34976b6 944 FALSE, /* pc_relative */
5bd4f169
AM		 945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
805fc799 947 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 948 "R_PPC64_TOC16_HA", /* name */
b34976b6 949 FALSE, /* partial_inplace */
5bd4f169
AM		 950 0, /* src_mask */
951 0xffff, /* dst_mask */
b34976b6 952 FALSE), /* pcrel_offset */
5bd4f169
AM		 953
954 /* 64-bit relocation; insert value of TOC base (.TOC.). */
955
956 /* R_PPC64_TOC 51 doubleword64 .TOC. */
957 HOWTO (R_PPC64_TOC, /* type */
958 0, /* rightshift */
959 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
960 64, /* bitsize */
b34976b6 961 FALSE, /* pc_relative */
5bd4f169
AM		 962 0, /* bitpos */
963 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 964 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 965 "R_PPC64_TOC", /* name */
b34976b6 966 FALSE, /* partial_inplace */
5bd4f169 967 0, /* src_mask */
f5e87a1d 968 ONES (64), /* dst_mask */
b34976b6 969 FALSE), /* pcrel_offset */
5bd4f169
AM		 970
971 /* Like R_PPC64_GOT16, but also informs the link editor that the
972 value to relocate may (!) refer to a PLT entry which the link
973 editor (a) may replace with the symbol value. If the link editor
974 is unable to fully resolve the symbol, it may (b) create a PLT
975 entry and store the address to the new PLT entry in the GOT.
976 This permits lazy resolution of function symbols at run time.
977 The link editor may also skip all of this and just (c) emit a
978 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
979 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
980 HOWTO (R_PPC64_PLTGOT16, /* type */
981 0, /* rightshift */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
983 16, /* bitsize */
b34976b6 984 FALSE, /* pc_relative */
5bd4f169
AM		 985 0, /* bitpos */
986 complain_overflow_signed, /* complain_on_overflow */
805fc799 987 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 988 "R_PPC64_PLTGOT16", /* name */
989 FALSE, /* partial_inplace */
990 0, /* src_mask */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
993
994 /* Like R_PPC64_PLTGOT16, but without overflow. */
995 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
996 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
997 0, /* rightshift */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
999 16, /* bitsize */
1000 FALSE, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 ppc64_elf_unhandled_reloc, /* special_function */
1004 "R_PPC64_PLTGOT16_LO", /* name */
1005 FALSE, /* partial_inplace */
1006 0, /* src_mask */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1009
1010 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1011 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1012 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1013 16, /* rightshift */
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 16, /* bitsize */
1016 FALSE, /* pc_relative */
1017 0, /* bitpos */
1018 complain_overflow_dont, /* complain_on_overflow */
1019 ppc64_elf_unhandled_reloc, /* special_function */
1020 "R_PPC64_PLTGOT16_HI", /* name */
1021 FALSE, /* partial_inplace */
1022 0, /* src_mask */
1023 0xffff, /* dst_mask */
1024 FALSE), /* pcrel_offset */
1025
1026 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1027 1 if the contents of the low 16 bits, treated as a signed number,
1028 is negative. */
1029 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1030 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1031 16, /* rightshift */
1032 1, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 ppc64_elf_unhandled_reloc, /* special_function */
1038 "R_PPC64_PLTGOT16_HA", /* name */
1039 FALSE, /* partial_inplace */
1040 0, /* src_mask */
1041 0xffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1043
1044 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1045 HOWTO (R_PPC64_ADDR16_DS, /* type */
1046 0, /* rightshift */
1047 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_bitfield, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_PPC64_ADDR16_DS", /* name */
1054 FALSE, /* partial_inplace */
1055 0, /* src_mask */
1056 0xfffc, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1060 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1061 0, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 0, /* bitpos */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 "R_PPC64_ADDR16_LO_DS",/* name */
1069 FALSE, /* partial_inplace */
1070 0, /* src_mask */
1071 0xfffc, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073
1074 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_GOT16_DS, /* type */
1076 0, /* rightshift */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_signed, /* complain_on_overflow */
1082 ppc64_elf_unhandled_reloc, /* special_function */
1083 "R_PPC64_GOT16_DS", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0xfffc, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1088
1089 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1091 0, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 16, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc64_elf_unhandled_reloc, /* special_function */
1098 "R_PPC64_GOT16_LO_DS", /* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 0xfffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1103
1104 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1106 0, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 FALSE, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc, /* special_function */
1113 "R_PPC64_PLT16_LO_DS", /* name */
1114 FALSE, /* partial_inplace */
1115 0, /* src_mask */
1116 0xfffc, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1118
1119 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1121 0, /* rightshift */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 16, /* bitsize */
1124 FALSE, /* pc_relative */
1125 0, /* bitpos */
1126 complain_overflow_bitfield, /* complain_on_overflow */
1127 ppc64_elf_sectoff_reloc, /* special_function */
1128 "R_PPC64_SECTOFF_DS", /* name */
1129 FALSE, /* partial_inplace */
1130 0, /* src_mask */
1131 0xfffc, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1133
1134 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1136 0, /* rightshift */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 16, /* bitsize */
1139 FALSE, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc64_elf_sectoff_reloc, /* special_function */
1143 "R_PPC64_SECTOFF_LO_DS",/* name */
1144 FALSE, /* partial_inplace */
1145 0, /* src_mask */
1146 0xfffc, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1148
1149 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_TOC16_DS, /* type */
1151 0, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 FALSE, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_signed, /* complain_on_overflow */
1157 ppc64_elf_toc_reloc, /* special_function */
1158 "R_PPC64_TOC16_DS", /* name */
1159 FALSE, /* partial_inplace */
1160 0, /* src_mask */
1161 0xfffc, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1163
1164 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1166 0, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc64_elf_toc_reloc, /* special_function */
1173 "R_PPC64_TOC16_LO_DS", /* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0xfffc, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1180 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1181 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1182 0, /* rightshift */
1183 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 16, /* bitsize */
1185 FALSE, /* pc_relative */
1186 0, /* bitpos */
1187 complain_overflow_signed, /* complain_on_overflow */
1188 ppc64_elf_unhandled_reloc, /* special_function */
1189 "R_PPC64_PLTGOT16_DS", /* name */
1190 FALSE, /* partial_inplace */
1191 0, /* src_mask */
1192 0xfffc, /* dst_mask */
1193 FALSE), /* pcrel_offset */
1194
1195 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1196 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1197 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1198 0, /* rightshift */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 16, /* bitsize */
1201 FALSE, /* pc_relative */
1202 0, /* bitpos */
1203 complain_overflow_dont, /* complain_on_overflow */
1204 ppc64_elf_unhandled_reloc, /* special_function */
1205 "R_PPC64_PLTGOT16_LO_DS",/* name */
1206 FALSE, /* partial_inplace */
1207 0, /* src_mask */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1210
1211 /* Marker reloc for TLS. */
1212 HOWTO (R_PPC64_TLS,
1213 0, /* rightshift */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 32, /* bitsize */
1216 FALSE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_PPC64_TLS", /* name */
1221 FALSE, /* partial_inplace */
1222 0, /* src_mask */
1223 0, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1225
1226 /* Computes the load module index of the load module that contains the
1227 definition of its TLS sym. */
1228 HOWTO (R_PPC64_DTPMOD64,
1229 0, /* rightshift */
1230 4, /* size (0 = byte, 1 = short, 2 = long) */
1231 64, /* bitsize */
1232 FALSE, /* pc_relative */
1233 0, /* bitpos */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 ppc64_elf_unhandled_reloc, /* special_function */
1236 "R_PPC64_DTPMOD64", /* name */
1237 FALSE, /* partial_inplace */
1238 0, /* src_mask */
1239 ONES (64), /* dst_mask */
1240 FALSE), /* pcrel_offset */
1241
1242 /* Computes a dtv-relative displacement, the difference between the value
1243 of sym+add and the base address of the thread-local storage block that
1244 contains the definition of sym, minus 0x8000. */
1245 HOWTO (R_PPC64_DTPREL64,
1246 0, /* rightshift */
1247 4, /* size (0 = byte, 1 = short, 2 = long) */
1248 64, /* bitsize */
1249 FALSE, /* pc_relative */
1250 0, /* bitpos */
1251 complain_overflow_dont, /* complain_on_overflow */
1252 ppc64_elf_unhandled_reloc, /* special_function */
1253 "R_PPC64_DTPREL64", /* name */
1254 FALSE, /* partial_inplace */
1255 0, /* src_mask */
1256 ONES (64), /* dst_mask */
1257 FALSE), /* pcrel_offset */
1258
1259 /* A 16 bit dtprel reloc. */
1260 HOWTO (R_PPC64_DTPREL16,
1261 0, /* rightshift */
1262 1, /* size (0 = byte, 1 = short, 2 = long) */
1263 16, /* bitsize */
1264 FALSE, /* pc_relative */
1265 0, /* bitpos */
1266 complain_overflow_signed, /* complain_on_overflow */
1267 ppc64_elf_unhandled_reloc, /* special_function */
1268 "R_PPC64_DTPREL16", /* name */
1269 FALSE, /* partial_inplace */
1270 0, /* src_mask */
1271 0xffff, /* dst_mask */
1272 FALSE), /* pcrel_offset */
1273
1274 /* Like DTPREL16, but no overflow. */
1275 HOWTO (R_PPC64_DTPREL16_LO,
1276 0, /* rightshift */
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 16, /* bitsize */
1279 FALSE, /* pc_relative */
1280 0, /* bitpos */
1281 complain_overflow_dont, /* complain_on_overflow */
1282 ppc64_elf_unhandled_reloc, /* special_function */
1283 "R_PPC64_DTPREL16_LO", /* name */
1284 FALSE, /* partial_inplace */
1285 0, /* src_mask */
1286 0xffff, /* dst_mask */
1287 FALSE), /* pcrel_offset */
1288
1289 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1290 HOWTO (R_PPC64_DTPREL16_HI,
1291 16, /* rightshift */
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 16, /* bitsize */
1294 FALSE, /* pc_relative */
1295 0, /* bitpos */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 ppc64_elf_unhandled_reloc, /* special_function */
1298 "R_PPC64_DTPREL16_HI", /* name */
1299 FALSE, /* partial_inplace */
1300 0, /* src_mask */
1301 0xffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1303
1304 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1305 HOWTO (R_PPC64_DTPREL16_HA,
1306 16, /* rightshift */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 16, /* bitsize */
1309 FALSE, /* pc_relative */
1310 0, /* bitpos */
1311 complain_overflow_dont, /* complain_on_overflow */
1312 ppc64_elf_unhandled_reloc, /* special_function */
1313 "R_PPC64_DTPREL16_HA", /* name */
1314 FALSE, /* partial_inplace */
1315 0, /* src_mask */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1318
1319 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1320 HOWTO (R_PPC64_DTPREL16_HIGHER,
1321 32, /* rightshift */
1322 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 16, /* bitsize */
1324 FALSE, /* pc_relative */
1325 0, /* bitpos */
1326 complain_overflow_dont, /* complain_on_overflow */
1327 ppc64_elf_unhandled_reloc, /* special_function */
1328 "R_PPC64_DTPREL16_HIGHER", /* name */
1329 FALSE, /* partial_inplace */
1330 0, /* src_mask */
1331 0xffff, /* dst_mask */
1332 FALSE), /* pcrel_offset */
1333
1334 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1335 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1336 32, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 16, /* bitsize */
1339 FALSE, /* pc_relative */
1340 0, /* bitpos */
1341 complain_overflow_dont, /* complain_on_overflow */
1342 ppc64_elf_unhandled_reloc, /* special_function */
1343 "R_PPC64_DTPREL16_HIGHERA", /* name */
1344 FALSE, /* partial_inplace */
1345 0, /* src_mask */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1348
1349 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1350 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1351 48, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 16, /* bitsize */
1354 FALSE, /* pc_relative */
1355 0, /* bitpos */
1356 complain_overflow_dont, /* complain_on_overflow */
1357 ppc64_elf_unhandled_reloc, /* special_function */
1358 "R_PPC64_DTPREL16_HIGHEST", /* name */
1359 FALSE, /* partial_inplace */
1360 0, /* src_mask */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1363
1364 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1365 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1366 48, /* rightshift */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 16, /* bitsize */
1369 FALSE, /* pc_relative */
1370 0, /* bitpos */
1371 complain_overflow_dont, /* complain_on_overflow */
1372 ppc64_elf_unhandled_reloc, /* special_function */
1373 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1374 FALSE, /* partial_inplace */
1375 0, /* src_mask */
1376 0xffff, /* dst_mask */
1377 FALSE), /* pcrel_offset */
1378
1379 /* Like DTPREL16, but for insns with a DS field. */
1380 HOWTO (R_PPC64_DTPREL16_DS,
1381 0, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 16, /* bitsize */
1384 FALSE, /* pc_relative */
1385 0, /* bitpos */
1386 complain_overflow_signed, /* complain_on_overflow */
1387 ppc64_elf_unhandled_reloc, /* special_function */
1388 "R_PPC64_DTPREL16_DS", /* name */
1389 FALSE, /* partial_inplace */
1390 0, /* src_mask */
1391 0xfffc, /* dst_mask */
1392 FALSE), /* pcrel_offset */
1393
1394 /* Like DTPREL16_DS, but no overflow. */
1395 HOWTO (R_PPC64_DTPREL16_LO_DS,
1396 0, /* rightshift */
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 16, /* bitsize */
1399 FALSE, /* pc_relative */
1400 0, /* bitpos */
1401 complain_overflow_dont, /* complain_on_overflow */
1402 ppc64_elf_unhandled_reloc, /* special_function */
1403 "R_PPC64_DTPREL16_LO_DS", /* name */
1404 FALSE, /* partial_inplace */
1405 0, /* src_mask */
1406 0xfffc, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1408
1409 /* Computes a tp-relative displacement, the difference between the value of
1410 sym+add and the value of the thread pointer (r13). */
1411 HOWTO (R_PPC64_TPREL64,
1412 0, /* rightshift */
1413 4, /* size (0 = byte, 1 = short, 2 = long) */
1414 64, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 ppc64_elf_unhandled_reloc, /* special_function */
1419 "R_PPC64_TPREL64", /* name */
1420 FALSE, /* partial_inplace */
1421 0, /* src_mask */
1422 ONES (64), /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 /* A 16 bit tprel reloc. */
1426 HOWTO (R_PPC64_TPREL16,
1427 0, /* rightshift */
1428 1, /* size (0 = byte, 1 = short, 2 = long) */
1429 16, /* bitsize */
1430 FALSE, /* pc_relative */
1431 0, /* bitpos */
1432 complain_overflow_signed, /* complain_on_overflow */
1433 ppc64_elf_unhandled_reloc, /* special_function */
1434 "R_PPC64_TPREL16", /* name */
1435 FALSE, /* partial_inplace */
1436 0, /* src_mask */
1437 0xffff, /* dst_mask */
1438 FALSE), /* pcrel_offset */
1439
1440 /* Like TPREL16, but no overflow. */
1441 HOWTO (R_PPC64_TPREL16_LO,
1442 0, /* rightshift */
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 16, /* bitsize */
1445 FALSE, /* pc_relative */
1446 0, /* bitpos */
1447 complain_overflow_dont, /* complain_on_overflow */
1448 ppc64_elf_unhandled_reloc, /* special_function */
1449 "R_PPC64_TPREL16_LO", /* name */
1450 FALSE, /* partial_inplace */
1451 0, /* src_mask */
1452 0xffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
1454
1455 /* Like TPREL16_LO, but next higher group of 16 bits. */
1456 HOWTO (R_PPC64_TPREL16_HI,
1457 16, /* rightshift */
1458 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 16, /* bitsize */
1460 FALSE, /* pc_relative */
1461 0, /* bitpos */
1462 complain_overflow_dont, /* complain_on_overflow */
1463 ppc64_elf_unhandled_reloc, /* special_function */
1464 "R_PPC64_TPREL16_HI", /* name */
1465 FALSE, /* partial_inplace */
1466 0, /* src_mask */
1467 0xffff, /* dst_mask */
1468 FALSE), /* pcrel_offset */
1469
1470 /* Like TPREL16_HI, but adjust for low 16 bits. */
1471 HOWTO (R_PPC64_TPREL16_HA,
1472 16, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 16, /* bitsize */
1475 FALSE, /* pc_relative */
1476 0, /* bitpos */
1477 complain_overflow_dont, /* complain_on_overflow */
1478 ppc64_elf_unhandled_reloc, /* special_function */
1479 "R_PPC64_TPREL16_HA", /* name */
1480 FALSE, /* partial_inplace */
1481 0, /* src_mask */
1482 0xffff, /* dst_mask */
1483 FALSE), /* pcrel_offset */
1484
1485 /* Like TPREL16_HI, but next higher group of 16 bits. */
1486 HOWTO (R_PPC64_TPREL16_HIGHER,
1487 32, /* rightshift */
1488 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 16, /* bitsize */
1490 FALSE, /* pc_relative */
1491 0, /* bitpos */
1492 complain_overflow_dont, /* complain_on_overflow */
1493 ppc64_elf_unhandled_reloc, /* special_function */
1494 "R_PPC64_TPREL16_HIGHER", /* name */
1495 FALSE, /* partial_inplace */
1496 0, /* src_mask */
1497 0xffff, /* dst_mask */
1498 FALSE), /* pcrel_offset */
1499
1500 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1501 HOWTO (R_PPC64_TPREL16_HIGHERA,
1502 32, /* rightshift */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 16, /* bitsize */
1505 FALSE, /* pc_relative */
1506 0, /* bitpos */
1507 complain_overflow_dont, /* complain_on_overflow */
1508 ppc64_elf_unhandled_reloc, /* special_function */
1509 "R_PPC64_TPREL16_HIGHERA", /* name */
1510 FALSE, /* partial_inplace */
1511 0, /* src_mask */
1512 0xffff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1514
1515 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1516 HOWTO (R_PPC64_TPREL16_HIGHEST,
1517 48, /* rightshift */
1518 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 16, /* bitsize */
1520 FALSE, /* pc_relative */
1521 0, /* bitpos */
1522 complain_overflow_dont, /* complain_on_overflow */
1523 ppc64_elf_unhandled_reloc, /* special_function */
1524 "R_PPC64_TPREL16_HIGHEST", /* name */
1525 FALSE, /* partial_inplace */
1526 0, /* src_mask */
1527 0xffff, /* dst_mask */
1528 FALSE), /* pcrel_offset */
1529
1530 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1531 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1532 48, /* rightshift */
1533 1, /* size (0 = byte, 1 = short, 2 = long) */
1534 16, /* bitsize */
1535 FALSE, /* pc_relative */
1536 0, /* bitpos */
1537 complain_overflow_dont, /* complain_on_overflow */
1538 ppc64_elf_unhandled_reloc, /* special_function */
1539 "R_PPC64_TPREL16_HIGHESTA", /* name */
1540 FALSE, /* partial_inplace */
1541 0, /* src_mask */
1542 0xffff, /* dst_mask */
1543 FALSE), /* pcrel_offset */
1544
1545 /* Like TPREL16, but for insns with a DS field. */
1546 HOWTO (R_PPC64_TPREL16_DS,
1547 0, /* rightshift */
1548 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 16, /* bitsize */
1550 FALSE, /* pc_relative */
1551 0, /* bitpos */
1552 complain_overflow_signed, /* complain_on_overflow */
1553 ppc64_elf_unhandled_reloc, /* special_function */
1554 "R_PPC64_TPREL16_DS", /* name */
1555 FALSE, /* partial_inplace */
1556 0, /* src_mask */
1557 0xfffc, /* dst_mask */
1558 FALSE), /* pcrel_offset */
1559
1560 /* Like TPREL16_DS, but no overflow. */
1561 HOWTO (R_PPC64_TPREL16_LO_DS,
1562 0, /* rightshift */
1563 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 16, /* bitsize */
1565 FALSE, /* pc_relative */
1566 0, /* bitpos */
1567 complain_overflow_dont, /* complain_on_overflow */
1568 ppc64_elf_unhandled_reloc, /* special_function */
1569 "R_PPC64_TPREL16_LO_DS", /* name */
1570 FALSE, /* partial_inplace */
1571 0, /* src_mask */
1572 0xfffc, /* dst_mask */
1573 FALSE), /* pcrel_offset */
1574
1575 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1576 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1577 to the first entry relative to the TOC base (r2). */
1578 HOWTO (R_PPC64_GOT_TLSGD16,
1579 0, /* rightshift */
1580 1, /* size (0 = byte, 1 = short, 2 = long) */
1581 16, /* bitsize */
1582 FALSE, /* pc_relative */
1583 0, /* bitpos */
1584 complain_overflow_signed, /* complain_on_overflow */
1585 ppc64_elf_unhandled_reloc, /* special_function */
1586 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1587 FALSE, /* partial_inplace */
5bd4f169
AM		 1588 0, /* src_mask */
1589 0xffff, /* dst_mask */
b34976b6 1590 FALSE), /* pcrel_offset */
5bd4f169 1591
411e1bfb
AM		 1592 /* Like GOT_TLSGD16, but no overflow. */
1593 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1594 0, /* rightshift */
1595 1, /* size (0 = byte, 1 = short, 2 = long) */
1596 16, /* bitsize */
b34976b6 1597 FALSE, /* pc_relative */
5bd4f169
AM		 1598 0, /* bitpos */
1599 complain_overflow_dont, /* complain_on_overflow */
805fc799 1600 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1601 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1602 FALSE, /* partial_inplace */
5bd4f169
AM		 1603 0, /* src_mask */
1604 0xffff, /* dst_mask */
b34976b6 1605 FALSE), /* pcrel_offset */
5bd4f169 1606
411e1bfb
AM		 1607 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1608 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1609 16, /* rightshift */
1610 1, /* size (0 = byte, 1 = short, 2 = long) */
1611 16, /* bitsize */
b34976b6 1612 FALSE, /* pc_relative */
5bd4f169
AM		 1613 0, /* bitpos */
1614 complain_overflow_dont, /* complain_on_overflow */
805fc799 1615 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1616 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1617 FALSE, /* partial_inplace */
5bd4f169
AM		 1618 0, /* src_mask */
1619 0xffff, /* dst_mask */
b34976b6 1620 FALSE), /* pcrel_offset */
5bd4f169 1621
411e1bfb
AM		 1622 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1623 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1624 16, /* rightshift */
1625 1, /* size (0 = byte, 1 = short, 2 = long) */
1626 16, /* bitsize */
b34976b6 1627 FALSE, /* pc_relative */
5bd4f169 1628 0, /* bitpos */
411e1bfb 1629 complain_overflow_dont, /* complain_on_overflow */
805fc799 1630 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1631 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1632 FALSE, /* partial_inplace */
5bd4f169
AM		 1633 0, /* src_mask */
1634 0xffff, /* dst_mask */
b34976b6 1635 FALSE), /* pcrel_offset */
5bd4f169 1636
411e1bfb
AM		 1637 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1638 with values (sym+add)@dtpmod and zero, and computes the offset to the
1639 first entry relative to the TOC base (r2). */
1640 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1641 0, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 16, /* bitsize */
b34976b6 1644 FALSE, /* pc_relative */
5bd4f169 1645 0, /* bitpos */
411e1bfb
AM		 1646 complain_overflow_signed, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1649 FALSE, /* partial_inplace */
d006db6c 1650 0, /* src_mask */
411e1bfb 1651 0xffff, /* dst_mask */
b34976b6 1652 FALSE), /* pcrel_offset */
5bd4f169 1653
411e1bfb
AM		 1654 /* Like GOT_TLSLD16, but no overflow. */
1655 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1656 0, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 16, /* bitsize */
b34976b6 1659 FALSE, /* pc_relative */
5bd4f169 1660 0, /* bitpos */
411e1bfb
AM		 1661 complain_overflow_dont, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1664 FALSE, /* partial_inplace */
d006db6c 1665 0, /* src_mask */
411e1bfb 1666 0xffff, /* dst_mask */
b34976b6 1667 FALSE), /* pcrel_offset */
5bd4f169 1668
411e1bfb
AM		 1669 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1670 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1671 16, /* rightshift */
5bd4f169
AM		 1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 16, /* bitsize */
b34976b6 1674 FALSE, /* pc_relative */
5bd4f169 1675 0, /* bitpos */
411e1bfb 1676 complain_overflow_dont, /* complain_on_overflow */
805fc799 1677 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1678 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1679 FALSE, /* partial_inplace */
d006db6c 1680 0, /* src_mask */
411e1bfb 1681 0xffff, /* dst_mask */
b34976b6 1682 FALSE), /* pcrel_offset */
5bd4f169 1683
411e1bfb
AM		 1684 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1685 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1686 16, /* rightshift */
5bd4f169
AM		 1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 16, /* bitsize */
b34976b6 1689 FALSE, /* pc_relative */
5bd4f169
AM		 1690 0, /* bitpos */
1691 complain_overflow_dont, /* complain_on_overflow */
805fc799 1692 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1693 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1694 FALSE, /* partial_inplace */
d006db6c 1695 0, /* src_mask */
411e1bfb 1696 0xffff, /* dst_mask */
b34976b6 1697 FALSE), /* pcrel_offset */
5bd4f169 1698
411e1bfb
AM		 1699 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1700 the offset to the entry relative to the TOC base (r2). */
1701 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1702 0, /* rightshift */
1703 1, /* size (0 = byte, 1 = short, 2 = long) */
1704 16, /* bitsize */
b34976b6 1705 FALSE, /* pc_relative */
5bd4f169 1706 0, /* bitpos */
411e1bfb 1707 complain_overflow_signed, /* complain_on_overflow */
805fc799 1708 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1709 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1710 FALSE, /* partial_inplace */
d006db6c 1711 0, /* src_mask */
5bd4f169 1712 0xfffc, /* dst_mask */
b34976b6 1713 FALSE), /* pcrel_offset */
5bd4f169 1714
411e1bfb
AM		 1715 /* Like GOT_DTPREL16_DS, but no overflow. */
1716 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1717 0, /* rightshift */
c061c2d8
AM		 1718 1, /* size (0 = byte, 1 = short, 2 = long) */
1719 16, /* bitsize */
b34976b6 1720 FALSE, /* pc_relative */
5bd4f169 1721 0, /* bitpos */
411e1bfb
AM		 1722 complain_overflow_dont, /* complain_on_overflow */
1723 ppc64_elf_unhandled_reloc, /* special_function */
1724 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1725 FALSE, /* partial_inplace */
d006db6c 1726 0, /* src_mask */
c061c2d8 1727 0xfffc, /* dst_mask */
b34976b6 1728 FALSE), /* pcrel_offset */
5bd4f169 1729
411e1bfb
AM		 1730 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1731 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1732 16, /* rightshift */
5bd4f169
AM		 1733 1, /* size (0 = byte, 1 = short, 2 = long) */
1734 16, /* bitsize */
b34976b6 1735 FALSE, /* pc_relative */
5bd4f169
AM		 1736 0, /* bitpos */
1737 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1738 ppc64_elf_unhandled_reloc, /* special_function */
1739 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1740 FALSE, /* partial_inplace */
d006db6c 1741 0, /* src_mask */
411e1bfb 1742 0xffff, /* dst_mask */
b34976b6 1743 FALSE), /* pcrel_offset */
5bd4f169 1744
411e1bfb
AM		 1745 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1746 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1747 16, /* rightshift */
1748 1, /* size (0 = byte, 1 = short, 2 = long) */
1749 16, /* bitsize */
1750 FALSE, /* pc_relative */
1751 0, /* bitpos */
1752 complain_overflow_dont, /* complain_on_overflow */
1753 ppc64_elf_unhandled_reloc, /* special_function */
1754 "R_PPC64_GOT_DTPREL16_HA", /* name */
1755 FALSE, /* partial_inplace */
1756 0, /* src_mask */
1757 0xffff, /* dst_mask */
1758 FALSE), /* pcrel_offset */
1759
1760 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1761 offset to the entry relative to the TOC base (r2). */
1762 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1763 0, /* rightshift */
1764 1, /* size (0 = byte, 1 = short, 2 = long) */
1765 16, /* bitsize */
b34976b6 1766 FALSE, /* pc_relative */
5bd4f169
AM		 1767 0, /* bitpos */
1768 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1769 ppc64_elf_unhandled_reloc, /* special_function */
1770 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1771 FALSE, /* partial_inplace */
d006db6c 1772 0, /* src_mask */
ad8e1ba5 1773 0xfffc, /* dst_mask */
b34976b6 1774 FALSE), /* pcrel_offset */
5bd4f169 1775
411e1bfb
AM		 1776 /* Like GOT_TPREL16_DS, but no overflow. */
1777 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1778 0, /* rightshift */
1779 1, /* size (0 = byte, 1 = short, 2 = long) */
1780 16, /* bitsize */
b34976b6 1781 FALSE, /* pc_relative */
5bd4f169
AM		 1782 0, /* bitpos */
1783 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1784 ppc64_elf_unhandled_reloc, /* special_function */
1785 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1786 FALSE, /* partial_inplace */
d006db6c 1787 0, /* src_mask */
ad8e1ba5 1788 0xfffc, /* dst_mask */
b34976b6 1789 FALSE), /* pcrel_offset */
5bd4f169 1790
411e1bfb
AM		 1791 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1792 HOWTO (R_PPC64_GOT_TPREL16_HI,
1793 16, /* rightshift */
5bd4f169
AM		 1794 1, /* size (0 = byte, 1 = short, 2 = long) */
1795 16, /* bitsize */
b34976b6 1796 FALSE, /* pc_relative */
5bd4f169 1797 0, /* bitpos */
411e1bfb 1798 complain_overflow_dont, /* complain_on_overflow */
805fc799 1799 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1800 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1801 FALSE, /* partial_inplace */
d006db6c 1802 0, /* src_mask */
411e1bfb 1803 0xffff, /* dst_mask */
b34976b6 1804 FALSE), /* pcrel_offset */
5bd4f169 1805
411e1bfb
AM		 1806 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1807 HOWTO (R_PPC64_GOT_TPREL16_HA,
1808 16, /* rightshift */
5bd4f169
AM		 1809 1, /* size (0 = byte, 1 = short, 2 = long) */
1810 16, /* bitsize */
b34976b6 1811 FALSE, /* pc_relative */
5bd4f169
AM		 1812 0, /* bitpos */
1813 complain_overflow_dont, /* complain_on_overflow */
805fc799 1814 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1815 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1816 FALSE, /* partial_inplace */
d006db6c 1817 0, /* src_mask */
411e1bfb 1818 0xffff, /* dst_mask */
b34976b6 1819 FALSE), /* pcrel_offset */
5bd4f169
AM		 1820
1821 /* GNU extension to record C++ vtable hierarchy. */
1822 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1823 0, /* rightshift */
1824 0, /* size (0 = byte, 1 = short, 2 = long) */
1825 0, /* bitsize */
b34976b6 1826 FALSE, /* pc_relative */
5bd4f169
AM		 1827 0, /* bitpos */
1828 complain_overflow_dont, /* complain_on_overflow */
1829 NULL, /* special_function */
1830 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1831 FALSE, /* partial_inplace */
5bd4f169
AM		 1832 0, /* src_mask */
1833 0, /* dst_mask */
b34976b6 1834 FALSE), /* pcrel_offset */
5bd4f169
AM		 1835
1836 /* GNU extension to record C++ vtable member usage. */
1837 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1838 0, /* rightshift */
1839 0, /* size (0 = byte, 1 = short, 2 = long) */
1840 0, /* bitsize */
b34976b6 1841 FALSE, /* pc_relative */
5bd4f169
AM		 1842 0, /* bitpos */
1843 complain_overflow_dont, /* complain_on_overflow */
1844 NULL, /* special_function */
1845 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1846 FALSE, /* partial_inplace */
5bd4f169
AM		 1847 0, /* src_mask */
1848 0, /* dst_mask */
b34976b6 1849 FALSE), /* pcrel_offset */
5bd4f169
AM		 1850};
1851
1852\f
1853/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1854 be done. */
1855
1856static void
4ce794b7 1857ppc_howto_init (void)
5bd4f169
AM		 1858{
1859 unsigned int i, type;
1860
1861 for (i = 0;
1862 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1863 i++)
1864 {
1865 type = ppc64_elf_howto_raw[i].type;
1866 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1867 / sizeof (ppc64_elf_howto_table[0])));
1868 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1869 }
1870}
1871
1872static reloc_howto_type *
4ce794b7
AM		 1873ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1874 bfd_reloc_code_real_type code)
5bd4f169 1875{
411e1bfb 1876 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1877
1878 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1879 /* Initialize howto table if needed. */
1880 ppc_howto_init ();
1881
4ce794b7 1882 switch (code)
5bd4f169
AM		 1883 {
1884 default:
4ce794b7 1885 return NULL;
5bd4f169 1886
411e1bfb
AM		 1887 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1888 break;
1889 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1890 break;
1891 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1892 break;
1893 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1894 break;
1895 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1896 break;
1897 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1898 break;
1899 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1900 break;
411e1bfb 1901 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1902 break;
411e1bfb 1903 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1904 break;
411e1bfb 1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1906 break;
411e1bfb 1907 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1908 break;
411e1bfb 1909 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1910 break;
411e1bfb 1911 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1912 break;
411e1bfb 1913 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1914 break;
411e1bfb 1915 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1916 break;
411e1bfb 1917 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1918 break;
411e1bfb 1919 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1920 break;
411e1bfb 1921 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1922 break;
411e1bfb 1923 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1924 break;
411e1bfb 1925 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1926 break;
411e1bfb 1927 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1928 break;
411e1bfb 1929 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1930 break;
411e1bfb 1931 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1932 break;
411e1bfb 1933 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1934 break;
411e1bfb 1935 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1936 break;
411e1bfb 1937 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1938 break;
411e1bfb 1939 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1940 break;
411e1bfb 1941 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1942 break;
411e1bfb 1943 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1944 break;
411e1bfb 1945 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1946 break;
411e1bfb 1947 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1948 break;
411e1bfb 1949 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1950 break;
411e1bfb 1951 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1952 break;
411e1bfb 1953 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1954 break;
411e1bfb 1955 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1956 break;
411e1bfb 1957 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1958 break;
411e1bfb 1959 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1960 break;
411e1bfb 1961 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1962 break;
411e1bfb 1963 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1964 break;
411e1bfb 1965 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1966 break;
411e1bfb 1967 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1968 break;
411e1bfb 1969 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1970 break;
411e1bfb 1971 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1972 break;
411e1bfb 1973 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1974 break;
411e1bfb 1975 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1976 break;
411e1bfb 1977 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1978 break;
411e1bfb 1979 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1980 break;
411e1bfb 1981 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 1982 break;
411e1bfb 1983 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 1984 break;
411e1bfb 1985 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 1986 break;
411e1bfb 1987 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 1988 break;
411e1bfb 1989 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 1990 break;
411e1bfb 1991 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 1992 break;
411e1bfb 1993 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 1994 break;
411e1bfb 1995 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 1996 break;
411e1bfb 1997 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 1998 break;
411e1bfb 1999 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2000 break;
411e1bfb 2001 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2002 break;
411e1bfb 2003 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2004 break;
411e1bfb 2005 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2006 break;
411e1bfb 2007 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2008 break;
411e1bfb 2009 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2010 break;
411e1bfb 2011 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2012 break;
411e1bfb 2013 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2014 break;
411e1bfb 2015 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2016 break;
411e1bfb 2017 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2018 break;
411e1bfb
AM		 2019 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2020 break;
2021 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2022 break;
2023 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2024 break;
2025 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2026 break;
2027 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2028 break;
2029 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2030 break;
2031 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2032 break;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2034 break;
2035 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2036 break;
2037 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2038 break;
2039 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2040 break;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2042 break;
2043 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2044 break;
2045 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2046 break;
2047 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2048 break;
2049 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2050 break;
2051 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2052 break;
2053 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2054 break;
2055 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2056 break;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2058 break;
2059 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2060 break;
2061 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2062 break;
2063 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2064 break;
2065 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2066 break;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2068 break;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2070 break;
2071 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2072 break;
2073 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2074 break;
2075 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2076 break;
2077 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2078 break;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2080 break;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2082 break;
2083 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2084 break;
2085 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2086 break;
2087 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2088 break;
2089 }
2090
4ce794b7 2091 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2092};
2093
2094/* Set the howto pointer for a PowerPC ELF reloc. */
2095
2096static void
4ce794b7
AM		 2097ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2098 Elf_Internal_Rela *dst)
5bd4f169 2099{
65f38f15
AM		 2100 unsigned int type;
2101
ef60b7ff 2102 /* Initialize howto table if needed. */
5bd4f169 2103 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2104 ppc_howto_init ();
2105
65f38f15
AM		 2106 type = ELF64_R_TYPE (dst->r_info);
2107 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2108 / sizeof (ppc64_elf_howto_table[0])));
2109 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2110}
2111
04c9666a 2112/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2113
2114static bfd_reloc_status_type
4ce794b7
AM		 2115ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2116 void *data, asection *input_section,
2117 bfd *output_bfd, char **error_message)
5bd4f169 2118{
805fc799
AM		 2119 /* If this is a relocatable link (output_bfd test tells us), just
2120 call the generic function. Any adjustment will be done at final
2121 link time. */
2122 if (output_bfd != NULL)
cedb70c5 2123 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2124 input_section, output_bfd, error_message);
2125
2126 /* Adjust the addend for sign extension of the low 16 bits.
2127 We won't actually be using the low 16 bits, so trashing them
2128 doesn't matter. */
2129 reloc_entry->addend += 0x8000;
2130 return bfd_reloc_continue;
2131}
5bd4f169 2132
805fc799 2133static bfd_reloc_status_type
4ce794b7
AM		 2134ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2135 void *data, asection *input_section,
2136 bfd *output_bfd, char **error_message)
805fc799
AM		 2137{
2138 long insn;
04c9666a 2139 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2140 bfd_size_type octets;
2141 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2142 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2143
2144 /* If this is a relocatable link (output_bfd test tells us), just
2145 call the generic function. Any adjustment will be done at final
2146 link time. */
5bd4f169 2147 if (output_bfd != NULL)
cedb70c5 2148 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2149 input_section, output_bfd, error_message);
2150
2151 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2152 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2153 insn &= ~(0x01 << 21);
4ce794b7 2154 r_type = reloc_entry->howto->type;
805fc799
AM		 2155 if (r_type == R_PPC64_ADDR14_BRTAKEN
2156 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2157 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2158
2159 if (is_power4)
5bd4f169 2160 {
805fc799
AM		 2161 /* Set 'a' bit. This is 0b00010 in BO field for branch
2162 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2163 for branch on CTR insns (BO == 1a00t or 1a01t). */
2164 if ((insn & (0x14 << 21)) == (0x04 << 21))
2165 insn |= 0x02 << 21;
2166 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2167 insn |= 0x08 << 21;
2168 else
2169 return bfd_reloc_continue;
5bd4f169 2170 }
805fc799
AM		 2171 else
2172 {
2173 bfd_vma target = 0;
2174 bfd_vma from;
5bd4f169 2175
805fc799
AM		 2176 if (!bfd_is_com_section (symbol->section))
2177 target = symbol->value;
2178 target += symbol->section->output_section->vma;
2179 target += symbol->section->output_offset;
2180 target += reloc_entry->addend;
5bd4f169 2181
805fc799
AM		 2182 from = (reloc_entry->address
2183 + input_section->output_offset
2184 + input_section->output_section->vma);
5bd4f169 2185
805fc799
AM		 2186 /* Invert 'y' bit if not the default. */
2187 if ((bfd_signed_vma) (target - from) < 0)
2188 insn ^= 0x01 << 21;
2189 }
4ce794b7 2190 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
805fc799
AM		 2191 return bfd_reloc_continue;
2192}
5bd4f169 2193
805fc799 2194static bfd_reloc_status_type
4ce794b7
AM		 2195ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2196 void *data, asection *input_section,
2197 bfd *output_bfd, char **error_message)
805fc799
AM		 2198{
2199 /* If this is a relocatable link (output_bfd test tells us), just
2200 call the generic function. Any adjustment will be done at final
2201 link time. */
2202 if (output_bfd != NULL)
cedb70c5 2203 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2204 input_section, output_bfd, error_message);
5bd4f169 2205
805fc799
AM		 2206 /* Subtract the symbol section base address. */
2207 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2208 return bfd_reloc_continue;
2209}
2210
805fc799 2211static bfd_reloc_status_type
4ce794b7
AM		 2212ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2213 void *data, asection *input_section,
2214 bfd *output_bfd, char **error_message)
805fc799
AM		 2215{
2216 /* If this is a relocatable link (output_bfd test tells us), just
2217 call the generic function. Any adjustment will be done at final
2218 link time. */
2219 if (output_bfd != NULL)
cedb70c5 2220 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2221 input_section, output_bfd, error_message);
2222
2223 /* Subtract the symbol section base address. */
2224 reloc_entry->addend -= symbol->section->output_section->vma;
2225
2226 /* Adjust the addend for sign extension of the low 16 bits. */
2227 reloc_entry->addend += 0x8000;
2228 return bfd_reloc_continue;
2229}
2230
2231static bfd_reloc_status_type
4ce794b7
AM		 2232ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2233 void *data, asection *input_section,
2234 bfd *output_bfd, char **error_message)
805fc799
AM		 2235{
2236 bfd_vma TOCstart;
2237
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2240 link time. */
2241 if (output_bfd != NULL)
cedb70c5 2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2243 input_section, output_bfd, error_message);
2244
2245 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2246 if (TOCstart == 0)
2247 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2248
2249 /* Subtract the TOC base address. */
2250 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2251 return bfd_reloc_continue;
2252}
2253
2254static bfd_reloc_status_type
4ce794b7
AM		 2255ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
805fc799
AM		 2258{
2259 bfd_vma TOCstart;
2260
2261 /* If this is a relocatable link (output_bfd test tells us), just
2262 call the generic function. Any adjustment will be done at final
2263 link time. */
2264 if (output_bfd != NULL)
cedb70c5 2265 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2266 input_section, output_bfd, error_message);
2267
2268 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2269 if (TOCstart == 0)
2270 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2271
2272 /* Subtract the TOC base address. */
2273 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2274
2275 /* Adjust the addend for sign extension of the low 16 bits. */
2276 reloc_entry->addend += 0x8000;
2277 return bfd_reloc_continue;
2278}
2279
2280static bfd_reloc_status_type
4ce794b7
AM		 2281ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2282 void *data, asection *input_section,
2283 bfd *output_bfd, char **error_message)
805fc799
AM		 2284{
2285 bfd_vma TOCstart;
2286 bfd_size_type octets;
2287
2288 /* If this is a relocatable link (output_bfd test tells us), just
2289 call the generic function. Any adjustment will be done at final
2290 link time. */
2291 if (output_bfd != NULL)
cedb70c5 2292 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2293 input_section, output_bfd, error_message);
2294
2295 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2296 if (TOCstart == 0)
2297 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2298
2299 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2300 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2301 return bfd_reloc_ok;
2302}
2303
2304static bfd_reloc_status_type
4ce794b7
AM		 2305ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2306 void *data, asection *input_section,
2307 bfd *output_bfd, char **error_message)
805fc799
AM		 2308{
2309 /* If this is a relocatable link (output_bfd test tells us), just
2310 call the generic function. Any adjustment will be done at final
2311 link time. */
2312 if (output_bfd != NULL)
cedb70c5 2313 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2314 input_section, output_bfd, error_message);
2315
2316 if (error_message != NULL)
2317 {
2318 static char buf[60];
2319 sprintf (buf, "generic linker can't handle %s",
2320 reloc_entry->howto->name);
2321 *error_message = buf;
2322 }
2323 return bfd_reloc_dangerous;
2324}
2325
e717da7e
AM		 2326struct ppc64_elf_obj_tdata
2327{
2328 struct elf_obj_tdata elf;
2329
2330 /* Shortcuts to dynamic linker sections. */
2331 asection *got;
2332 asection *relgot;
2333
2334 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2335 sections means we potentially need one of these for each input bfd. */
2336 union {
2337 bfd_signed_vma refcount;
2338 bfd_vma offset;
2339 } tlsld_got;
2340};
2341
2342#define ppc64_elf_tdata(bfd) \
2343 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2344
2345#define ppc64_tlsld_got(bfd) \
2346 (&ppc64_elf_tdata (bfd)->tlsld_got)
2347
2348/* Override the generic function because we store some extras. */
2349
2350static bfd_boolean
2351ppc64_elf_mkobject (bfd *abfd)
2352{
2353 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2354 abfd->tdata.any = bfd_zalloc (abfd, amt);
2355 if (abfd->tdata.any == NULL)
2356 return FALSE;
2357 return TRUE;
2358}
2359
feee612b
AM		 2360/* Fix bad default arch selected for a 64 bit input bfd when the
2361 default is 32 bit. */
2362
b34976b6 2363static bfd_boolean
4ce794b7 2364ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2365{
2366 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2367 {
2368 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2369
2370 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2371 {
2372 /* Relies on arch after 32 bit default being 64 bit default. */
2373 abfd->arch_info = abfd->arch_info->next;
2374 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2375 }
2376 }
b34976b6 2377 return TRUE;
feee612b
AM		 2378}
2379
d37c89e5
AM		 2380/* Support for core dump NOTE sections. */
2381
2382static bfd_boolean
2383ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2384{
eea6121a 2385 size_t offset, size;
d37c89e5
AM		 2386
2387 if (note->descsz != 504)
2388 return FALSE;
2389
2390 /* pr_cursig */
2391 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2392
2393 /* pr_pid */
2394 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2395
2396 /* pr_reg */
2397 offset = 112;
eea6121a 2398 size = 384;
d37c89e5
AM		 2399
2400 /* Make a ".reg/999" section. */
2401 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2402 size, note->descpos + offset);
d37c89e5
AM		 2403}
2404
2405static bfd_boolean
2406ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2407{
2408 if (note->descsz != 136)
2409 return FALSE;
2410
2411 elf_tdata (abfd)->core_program
2412 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2413 elf_tdata (abfd)->core_command
2414 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2415
2416 return TRUE;
2417}
2418
5bd4f169
AM		 2419/* Merge backend specific data from an object file to the output
2420 object file when linking. */
2f6d9989 2421
b34976b6 2422static bfd_boolean
4ce794b7 2423ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2424{
5bd4f169
AM		 2425 /* Check if we have the same endianess. */
2426 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2427 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2428 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2429 {
2430 const char *msg;
2431
2432 if (bfd_big_endian (ibfd))
4ce794b7
AM		 2433 msg = _("%s: compiled for a big endian system "
2434 "and target is little endian");
5bd4f169 2435 else
4ce794b7
AM		 2436 msg = _("%s: compiled for a little endian system "
2437 "and target is big endian");
5bd4f169 2438
8f615d07 2439 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
5bd4f169
AM		 2440
2441 bfd_set_error (bfd_error_wrong_format);
b34976b6 2442 return FALSE;
5bd4f169
AM		 2443 }
2444
b34976b6 2445 return TRUE;
5bd4f169 2446}
f0abc2a1 2447
5d35169e
AM		 2448/* Add extra PPC sections. */
2449
2450static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2451{
7dcb9820
AM		 2452 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2453 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2454 { ".plt", 4, 0, SHT_NOBITS, 0 },
2455 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2456 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2457 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2458 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2459};
2460
f0abc2a1
AM		 2461struct _ppc64_elf_section_data
2462{
2463 struct bfd_elf_section_data elf;
411e1bfb
AM		 2464
2465 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2466 union
2467 {
411e1bfb 2468 /* Points to the function code section for local opd entries. */
f0abc2a1 2469 asection **func_sec;
411e1bfb 2470 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2471 long *adjust;
2472 } opd;
411e1bfb
AM		 2473
2474 /* An array for toc sections, indexed by offset/8.
2475 Specifies the relocation symbol index used at a given toc offset. */
2476 unsigned *t_symndx;
f0abc2a1
AM		 2477};
2478
2479#define ppc64_elf_section_data(sec) \
411e1bfb 2480 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2481
2482static bfd_boolean
4ce794b7 2483ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2484{
2485 struct _ppc64_elf_section_data *sdata;
2486 bfd_size_type amt = sizeof (*sdata);
2487
4ce794b7 2488 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2489 if (sdata == NULL)
2490 return FALSE;
4ce794b7 2491 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2492
2493 return _bfd_elf_new_section_hook (abfd, sec);
2494}
4025353c
AM		 2495
2496static void *
2497get_opd_info (asection * sec)
2498{
2499 if (sec != NULL
2500 && ppc64_elf_section_data (sec) != NULL
2501 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2502 return ppc64_elf_section_data (sec)->opd.adjust;
2503 return NULL;
2504}
5bd4f169 2505\f
65f38f15
AM		 2506/* The following functions are specific to the ELF linker, while
2507 functions above are used generally. Those named ppc64_elf_* are
2508 called by the main ELF linker code. They appear in this file more
2509 or less in the order in which they are called. eg.
2510 ppc64_elf_check_relocs is called early in the link process,
2511 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2512 called.
2513
2514 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2515 functions have both a function code symbol and a function descriptor
2516 symbol. A call to foo in a relocatable object file looks like:
2517
2518 . .text
2519 . x:
2520 . bl .foo
2521 . nop
2522
2523 The function definition in another object file might be:
2524
2525 . .section .opd
2526 . foo: .quad .foo
2527 . .quad .TOC.@tocbase
2528 . .quad 0
2529 .
2530 . .text
2531 . .foo: blr
2532
2533 When the linker resolves the call during a static link, the branch
2534 unsurprisingly just goes to .foo and the .opd information is unused.
2535 If the function definition is in a shared library, things are a little
2536 different: The call goes via a plt call stub, the opd information gets
2537 copied to the plt, and the linker patches the nop.
2538
2539 . x:
2540 . bl .foo_stub
2541 . ld 2,40(1)
2542 .
2543 .
2544 . .foo_stub:
2545 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 2546 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 2547 . std 2,40(1) # this is the general idea
2548 . ld 11,0(12)
2549 . ld 2,8(12)
2550 . mtctr 11
2551 . ld 11,16(12)
2552 . bctr
2553 .
2554 . .section .plt
2555 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2556
2557 The "reloc ()" notation is supposed to indicate that the linker emits
2558 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2559 copying.
2560
2561 What are the difficulties here? Well, firstly, the relocations
2562 examined by the linker in check_relocs are against the function code
2563 sym .foo, while the dynamic relocation in the plt is emitted against
2564 the function descriptor symbol, foo. Somewhere along the line, we need
2565 to carefully copy dynamic link information from one symbol to the other.
2566 Secondly, the generic part of the elf linker will make .foo a dynamic
2567 symbol as is normal for most other backends. We need foo dynamic
2568 instead, at least for an application final link. However, when
2569 creating a shared library containing foo, we need to have both symbols
2570 dynamic so that references to .foo are satisfied during the early
2571 stages of linking. Otherwise the linker might decide to pull in a
41bd81ab 2572 definition from some other object, eg. a static library. */
65f38f15
AM		 2573
2574/* The linker needs to keep track of the number of relocs that it
2575 decides to copy as dynamic relocs in check_relocs for each symbol.
2576 This is so that it can later discard them if they are found to be
2577 unnecessary. We store the information in a field extending the
2578 regular ELF linker hash table. */
2579
2580struct ppc_dyn_relocs
2581{
2582 struct ppc_dyn_relocs *next;
2583
2584 /* The input section of the reloc. */
2585 asection *sec;
2586
2587 /* Total number of relocs copied for the input section. */
2588 bfd_size_type count;
2589
2590 /* Number of pc-relative relocs copied for the input section. */
2591 bfd_size_type pc_count;
2592};
2593
411e1bfb
AM		 2594/* Track GOT entries needed for a given symbol. We might need more
2595 than one got entry per symbol. */
2596struct got_entry
2597{
2598 struct got_entry *next;
2599
e7b938ca 2600 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 2601 bfd_vma addend;
2602
e717da7e
AM		 2603 /* Unlike other ELF targets, we use separate GOT entries for the same
2604 symbol referenced from different input files. This is to support
2605 automatic multiple TOC/GOT sections, where the TOC base can vary
2606 from one input file to another.
2607
2608 Point to the BFD owning this GOT entry. */
2609 bfd *owner;
2610
2611 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2612 TLS_TPREL or TLS_DTPREL for tls entries. */
2613 char tls_type;
2614
e7b938ca 2615 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 2616 union
2617 {
2618 bfd_signed_vma refcount;
2619 bfd_vma offset;
2620 } got;
411e1bfb
AM		 2621};
2622
2623/* The same for PLT. */
2624struct plt_entry
2625{
2626 struct plt_entry *next;
2627
2628 bfd_vma addend;
2629
2630 union
2631 {
2632 bfd_signed_vma refcount;
2633 bfd_vma offset;
2634 } plt;
2635};
2636
65f38f15 2637/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 2638 selects those that must be copied when linking a shared library,
2639 even when the symbol is local. */
65f38f15 2640
411e1bfb 2641#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 2642 ((RTYPE) != R_PPC64_REL32 \
2643 && (RTYPE) != R_PPC64_REL64 \
04c9666a 2644 && (RTYPE) != R_PPC64_REL30)
65f38f15 2645
f4656909
AM		 2646/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2647 copying dynamic variables from a shared lib into an app's dynbss
2648 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 2649 shared lib. With code that gcc generates, it's vital that this be
2650 enabled; In the PowerPC64 ABI, the address of a function is actually
2651 the address of a function descriptor, which resides in the .opd
2652 section. gcc uses the descriptor directly rather than going via the
2653 GOT as some other ABI's do, which means that initialized function
2654 pointers must reference the descriptor. Thus, a function pointer
2655 initialized to the address of a function in a shared library will
2656 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 2657 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 2658 presents a problem as a plt entry for that function is also
2659 initialized from the function descriptor symbol and the copy reloc
2660 may not be initialized first. */
a23b6845 2661#define ELIMINATE_COPY_RELOCS 1
f4656909 2662
721956f4
AM		 2663/* Section name for stubs is the associated section name plus this
2664 string. */
2665#define STUB_SUFFIX ".stub"
2666
2667/* Linker stubs.
2668 ppc_stub_long_branch:
2669 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2670 destination, but a 24 bit branch in a stub section will reach.
2671 . b dest
2672
2673 ppc_stub_plt_branch:
2674 Similar to the above, but a 24 bit branch in the stub section won't
2675 reach its destination.
87e226ce
AM		 2676 . addis %r12,%r2,xxx@toc@ha
2677 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 2678 . mtctr %r11
2679 . bctr
2680
2681 ppc_stub_plt_call:
2c66dc6c
AM		 2682 Used to call a function in a shared library. If it so happens that
2683 the plt entry referenced crosses a 64k boundary, then an extra
2684 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
2685 xxx+16 as appropriate.
87e226ce 2686 . addis %r12,%r2,xxx@toc@ha
721956f4 2687 . std %r2,40(%r1)
87e226ce
AM		 2688 . ld %r11,xxx+0@toc@l(%r12)
2689 . ld %r2,xxx+8@toc@l(%r12)
721956f4 2690 . mtctr %r11
87e226ce 2691 . ld %r11,xxx+16@toc@l(%r12)
721956f4 2692 . bctr
ad8e1ba5
AM		 2693
2694 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2695 code to adjust the value and save r2 to support multiple toc sections.
2696 A ppc_stub_long_branch with an r2 offset looks like:
2697 . std %r2,40(%r1)
2698 . addis %r2,%r2,off@ha
2699 . addi %r2,%r2,off@l
2700 . b dest
2701
2702 A ppc_stub_plt_branch with an r2 offset looks like:
2703 . std %r2,40(%r1)
2704 . addis %r12,%r2,xxx@toc@ha
2705 . ld %r11,xxx@toc@l(%r12)
2706 . addis %r2,%r2,off@ha
2707 . addi %r2,%r2,off@l
2708 . mtctr %r11
2709 . bctr
721956f4
AM		 2710*/
2711
2712enum ppc_stub_type {
2713 ppc_stub_none,
2714 ppc_stub_long_branch,
ad8e1ba5 2715 ppc_stub_long_branch_r2off,
721956f4 2716 ppc_stub_plt_branch,
ad8e1ba5 2717 ppc_stub_plt_branch_r2off,
721956f4
AM		 2718 ppc_stub_plt_call
2719};
2720
2721struct ppc_stub_hash_entry {
2722
2723 /* Base hash table entry structure. */
2724 struct bfd_hash_entry root;
2725
ad8e1ba5
AM		 2726 enum ppc_stub_type stub_type;
2727
721956f4
AM		 2728 /* The stub section. */
2729 asection *stub_sec;
2730
2731 /* Offset within stub_sec of the beginning of this stub. */
2732 bfd_vma stub_offset;
2733
2734 /* Given the symbol's value and its section we can determine its final
2735 value when building the stubs (so the stub knows where to jump. */
2736 bfd_vma target_value;
2737 asection *target_section;
2738
721956f4
AM		 2739 /* The symbol table entry, if any, that this was derived from. */
2740 struct ppc_link_hash_entry *h;
2741
411e1bfb
AM		 2742 /* And the reloc addend that this was derived from. */
2743 bfd_vma addend;
2744
721956f4
AM		 2745 /* Where this stub is being called from, or, in the case of combined
2746 stub sections, the first input section in the group. */
2747 asection *id_sec;
2748};
2749
2750struct ppc_branch_hash_entry {
2751
2752 /* Base hash table entry structure. */
2753 struct bfd_hash_entry root;
2754
2755 /* Offset within .branch_lt. */
2756 unsigned int offset;
2757
2758 /* Generation marker. */
2759 unsigned int iter;
2760};
65f38f15
AM		 2761
2762struct ppc_link_hash_entry
2763{
2764 struct elf_link_hash_entry elf;
2765
721956f4
AM		 2766 /* A pointer to the most recently used stub hash entry against this
2767 symbol. */
2768 struct ppc_stub_hash_entry *stub_cache;
2769
65f38f15
AM		 2770 /* Track dynamic relocs copied for this symbol. */
2771 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 2772
721956f4 2773 /* Link between function code and descriptor symbols. */
34814b9f 2774 struct ppc_link_hash_entry *oh;
721956f4 2775
e86ce104
AM		 2776 /* Flag function code and descriptor symbols. */
2777 unsigned int is_func:1;
2778 unsigned int is_func_descriptor:1;
411e1bfb 2779
754021d0
AM		 2780 /* Whether global opd sym has been adjusted or not. */
2781 unsigned int adjust_done:1;
2782
411e1bfb 2783 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 2784 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2785 corresponding relocs are encountered during check_relocs.
2786 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2787 indicate the corresponding GOT entry type is not needed.
2788 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2789 a TPREL one. We use a separate flag rather than setting TPREL
2790 just for convenience in distinguishing the two cases. */
2791#define TLS_GD 1 /* GD reloc. */
2792#define TLS_LD 2 /* LD reloc. */
2793#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2794#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2795#define TLS_TLS 16 /* Any TLS reloc. */
2796#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2797#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2798 char tls_mask;
65f38f15
AM		 2799};
2800
2801/* ppc64 ELF linker hash table. */
2802
2803struct ppc_link_hash_table
2804{
2805 struct elf_link_hash_table elf;
2806
721956f4
AM		 2807 /* The stub hash table. */
2808 struct bfd_hash_table stub_hash_table;
2809
2810 /* Another hash table for plt_branch stubs. */
2811 struct bfd_hash_table branch_hash_table;
2812
2813 /* Linker stub bfd. */
2814 bfd *stub_bfd;
2815
2816 /* Linker call-backs. */
4ce794b7
AM		 2817 asection * (*add_stub_section) (const char *, asection *);
2818 void (*layout_sections_again) (void);
721956f4
AM		 2819
2820 /* Array to keep track of which stub sections have been created, and
2821 information on stub grouping. */
2822 struct map_stub {
2823 /* This is the section to which stubs in the group will be attached. */
2824 asection *link_sec;
2825 /* The stub section. */
2826 asection *stub_sec;
ad8e1ba5
AM		 2827 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2828 bfd_vma toc_off;
721956f4
AM		 2829 } *stub_group;
2830
ad8e1ba5
AM		 2831 /* Support for multiple toc sections. */
2832 unsigned int no_multi_toc;
2833 unsigned int multi_toc_needed;
2834
2835 /* Temp used when calculating TOC pointers. */
2836 bfd_vma toc_curr;
2837
8f3bab57
AM		 2838 /* Highest input section id. */
2839 int top_id;
2840
734b6cf9
AM		 2841 /* Highest output section index. */
2842 int top_index;
2843
2844 /* List of input sections for each output section. */
2845 asection **input_list;
721956f4 2846
65f38f15 2847 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 2848 asection *got;
4ce794b7
AM		 2849 asection *plt;
2850 asection *relplt;
2851 asection *dynbss;
2852 asection *relbss;
2853 asection *glink;
82bd7b59 2854 asection *sfpr;
4ce794b7
AM		 2855 asection *brlt;
2856 asection *relbrlt;
ec338859 2857
411e1bfb
AM		 2858 /* Shortcut to .__tls_get_addr. */
2859 struct elf_link_hash_entry *tls_get_addr;
2860
9b5ecbd0
AM		 2861 /* Statistics. */
2862 unsigned long stub_count[ppc_stub_plt_call];
2863
ad8e1ba5
AM		 2864 /* Set if we should emit symbols for stubs. */
2865 unsigned int emit_stub_syms;
2866
5d1634d7 2867 /* Set on error. */
721956f4
AM		 2868 unsigned int stub_error;
2869
2870 /* Flag set when small branches are detected. Used to
2871 select suitable defaults for the stub group size. */
2872 unsigned int has_14bit_branch;
2873
2874 /* Incremented every time we size stubs. */
2875 unsigned int stub_iteration;
5d1634d7 2876
ec338859
AM		 2877 /* Small local sym to section mapping cache. */
2878 struct sym_sec_cache sym_sec;
65f38f15
AM		 2879};
2880
2881/* Get the ppc64 ELF linker hash table from a link_info structure. */
2882
2883#define ppc_hash_table(p) \
2884 ((struct ppc_link_hash_table *) ((p)->hash))
2885
721956f4
AM		 2886#define ppc_stub_hash_lookup(table, string, create, copy) \
2887 ((struct ppc_stub_hash_entry *) \
2888 bfd_hash_lookup ((table), (string), (create), (copy)))
2889
2890#define ppc_branch_hash_lookup(table, string, create, copy) \
2891 ((struct ppc_branch_hash_entry *) \
2892 bfd_hash_lookup ((table), (string), (create), (copy)))
2893
2894/* Create an entry in the stub hash table. */
2895
2896static struct bfd_hash_entry *
4ce794b7
AM		 2897stub_hash_newfunc (struct bfd_hash_entry *entry,
2898 struct bfd_hash_table *table,
2899 const char *string)
721956f4
AM		 2900{
2901 /* Allocate the structure if it has not already been allocated by a
2902 subclass. */
2903 if (entry == NULL)
2904 {
2905 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2906 if (entry == NULL)
2907 return entry;
2908 }
2909
2910 /* Call the allocation method of the superclass. */
2911 entry = bfd_hash_newfunc (entry, table, string);
2912 if (entry != NULL)
2913 {
2914 struct ppc_stub_hash_entry *eh;
2915
2916 /* Initialize the local fields. */
2917 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 2918 eh->stub_type = ppc_stub_none;
721956f4
AM		 2919 eh->stub_sec = NULL;
2920 eh->stub_offset = 0;
2921 eh->target_value = 0;
2922 eh->target_section = NULL;
721956f4
AM		 2923 eh->h = NULL;
2924 eh->id_sec = NULL;
2925 }
2926
2927 return entry;
2928}
2929
2930/* Create an entry in the branch hash table. */
2931
2932static struct bfd_hash_entry *
4ce794b7
AM		 2933branch_hash_newfunc (struct bfd_hash_entry *entry,
2934 struct bfd_hash_table *table,
2935 const char *string)
721956f4
AM		 2936{
2937 /* Allocate the structure if it has not already been allocated by a
2938 subclass. */
2939 if (entry == NULL)
2940 {
2941 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2942 if (entry == NULL)
2943 return entry;
2944 }
2945
2946 /* Call the allocation method of the superclass. */
2947 entry = bfd_hash_newfunc (entry, table, string);
2948 if (entry != NULL)
2949 {
2950 struct ppc_branch_hash_entry *eh;
2951
2952 /* Initialize the local fields. */
2953 eh = (struct ppc_branch_hash_entry *) entry;
2954 eh->offset = 0;
2955 eh->iter = 0;
2956 }
2957
2958 return entry;
2959}
2960
65f38f15
AM		 2961/* Create an entry in a ppc64 ELF linker hash table. */
2962
2963static struct bfd_hash_entry *
4ce794b7
AM		 2964link_hash_newfunc (struct bfd_hash_entry *entry,
2965 struct bfd_hash_table *table,
2966 const char *string)
65f38f15
AM		 2967{
2968 /* Allocate the structure if it has not already been allocated by a
2969 subclass. */
2970 if (entry == NULL)
2971 {
2972 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2973 if (entry == NULL)
2974 return entry;
2975 }
2976
2977 /* Call the allocation method of the superclass. */
2978 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2979 if (entry != NULL)
2980 {
2981 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2982
721956f4 2983 eh->stub_cache = NULL;
65f38f15 2984 eh->dyn_relocs = NULL;
721956f4 2985 eh->oh = NULL;
e86ce104
AM		 2986 eh->is_func = 0;
2987 eh->is_func_descriptor = 0;
754021d0 2988 eh->adjust_done = 0;
e7b938ca 2989 eh->tls_mask = 0;
65f38f15
AM		 2990 }
2991
2992 return entry;
2993}
2994
2995/* Create a ppc64 ELF linker hash table. */
2996
2997static struct bfd_link_hash_table *
4ce794b7 2998ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 2999{
3000 struct ppc_link_hash_table *htab;
3001 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3002
4ce794b7 3003 htab = bfd_zmalloc (amt);
65f38f15
AM		 3004 if (htab == NULL)
3005 return NULL;
3006
3007 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3008 {
e2d34d7d 3009 free (htab);
65f38f15
AM		 3010 return NULL;
3011 }
3012
721956f4
AM		 3013 /* Init the stub hash table too. */
3014 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3015 return NULL;
3016
3017 /* And the branch hash table. */
3018 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3019 return NULL;
3020
3254fd24
AM		 3021 /* Initializing two fields of the union is just cosmetic. We really
3022 only care about glist, but when compiled on a 32-bit host the
3023 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3024 debugger inspection of these fields look nicer. */
3025 htab->elf.init_refcount.refcount = 0;
3026 htab->elf.init_refcount.glist = NULL;
3027 htab->elf.init_offset.offset = 0;
3028 htab->elf.init_offset.glist = NULL;
3029
65f38f15
AM		 3030 return &htab->elf.root;
3031}
3032
721956f4
AM		 3033/* Free the derived linker hash table. */
3034
3035static void
4ce794b7 3036ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3037{
3038 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3039
3040 bfd_hash_table_free (&ret->stub_hash_table);
3041 bfd_hash_table_free (&ret->branch_hash_table);
3042 _bfd_generic_link_hash_table_free (hash);
3043}
3044
e717da7e
AM		 3045/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3046
3047void
3048ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3049{
3050 struct ppc_link_hash_table *htab;
3051
3052 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3053
3054/* Always hook our dynamic sections into the first bfd, which is the
3055 linker created stub bfd. This ensures that the GOT header is at
3056 the start of the output TOC section. */
3057 htab = ppc_hash_table (info);
3058 htab->stub_bfd = abfd;
3059 htab->elf.dynobj = abfd;
3060}
3061
721956f4
AM		 3062/* Build a name for an entry in the stub hash table. */
3063
3064static char *
4ce794b7
AM		 3065ppc_stub_name (const asection *input_section,
3066 const asection *sym_sec,
3067 const struct ppc_link_hash_entry *h,
3068 const Elf_Internal_Rela *rel)
721956f4
AM		 3069{
3070 char *stub_name;
3071 bfd_size_type len;
3072
3073 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3074 offsets from a sym as a branch target? In fact, we could
3075 probably assume the addend is always zero. */
3076 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3077
3078 if (h)
3079 {
3080 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3081 stub_name = bfd_malloc (len);
3082 if (stub_name != NULL)
3083 {
97b639ba 3084 sprintf (stub_name, "%08x.%s+%x",
721956f4
AM		 3085 input_section->id & 0xffffffff,
3086 h->elf.root.root.string,
3087 (int) rel->r_addend & 0xffffffff);
3088 }
3089 }
3090 else
3091 {
ad8e1ba5 3092 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4
AM		 3093 stub_name = bfd_malloc (len);
3094 if (stub_name != NULL)
3095 {
97b639ba 3096 sprintf (stub_name, "%08x.%x:%x+%x",
721956f4
AM		 3097 input_section->id & 0xffffffff,
3098 sym_sec->id & 0xffffffff,
3099 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3100 (int) rel->r_addend & 0xffffffff);
3101 }
3102 }
3103 return stub_name;
3104}
3105
3106/* Look up an entry in the stub hash. Stub entries are cached because
3107 creating the stub name takes a bit of time. */
3108
3109static struct ppc_stub_hash_entry *
4ce794b7
AM		 3110ppc_get_stub_entry (const asection *input_section,
3111 const asection *sym_sec,
3112 struct elf_link_hash_entry *hash,
3113 const Elf_Internal_Rela *rel,
3114 struct ppc_link_hash_table *htab)
721956f4
AM		 3115{
3116 struct ppc_stub_hash_entry *stub_entry;
3117 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3118 const asection *id_sec;
3119
3120 /* If this input section is part of a group of sections sharing one
3121 stub section, then use the id of the first section in the group.
3122 Stub names need to include a section id, as there may well be
3123 more than one stub used to reach say, printf, and we need to
3124 distinguish between them. */
3125 id_sec = htab->stub_group[input_section->id].link_sec;
3126
3127 if (h != NULL && h->stub_cache != NULL
3128 && h->stub_cache->h == h
3129 && h->stub_cache->id_sec == id_sec)
3130 {
3131 stub_entry = h->stub_cache;
3132 }
3133 else
3134 {
3135 char *stub_name;
3136
3137 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3138 if (stub_name == NULL)
3139 return NULL;
3140
3141 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3142 stub_name, FALSE, FALSE);
721956f4
AM		 3143 if (h != NULL)
3144 h->stub_cache = stub_entry;
3145
3146 free (stub_name);
3147 }
3148
3149 return stub_entry;
3150}
3151
3152/* Add a new stub entry to the stub hash. Not all fields of the new
3153 stub entry are initialised. */
3154
3155static struct ppc_stub_hash_entry *
4ce794b7
AM		 3156ppc_add_stub (const char *stub_name,
3157 asection *section,
3158 struct ppc_link_hash_table *htab)
721956f4
AM		 3159{
3160 asection *link_sec;
3161 asection *stub_sec;
3162 struct ppc_stub_hash_entry *stub_entry;
3163
3164 link_sec = htab->stub_group[section->id].link_sec;
3165 stub_sec = htab->stub_group[section->id].stub_sec;
3166 if (stub_sec == NULL)
3167 {
3168 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3169 if (stub_sec == NULL)
3170 {
d4c88bbb 3171 size_t namelen;
721956f4
AM		 3172 bfd_size_type len;
3173 char *s_name;
3174
d4c88bbb
AM		 3175 namelen = strlen (link_sec->name);
3176 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3177 s_name = bfd_alloc (htab->stub_bfd, len);
3178 if (s_name == NULL)
3179 return NULL;
3180
d4c88bbb
AM		 3181 memcpy (s_name, link_sec->name, namelen);
3182 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3183 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3184 if (stub_sec == NULL)
3185 return NULL;
3186 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3187 }
3188 htab->stub_group[section->id].stub_sec = stub_sec;
3189 }
3190
3191 /* Enter this entry into the linker stub hash table. */
3192 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3193 TRUE, FALSE);
721956f4
AM		 3194 if (stub_entry == NULL)
3195 {
3196 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3197 bfd_archive_filename (section->owner),
3198 stub_name);
3199 return NULL;
3200 }
3201
3202 stub_entry->stub_sec = stub_sec;
3203 stub_entry->stub_offset = 0;
3204 stub_entry->id_sec = link_sec;
3205 return stub_entry;
3206}
3207
82bd7b59
AM		 3208/* Create sections for linker generated code. */
3209
b34976b6 3210static bfd_boolean
4ce794b7 3211create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3212{
3213 struct ppc_link_hash_table *htab;
3214 flagword flags;
3215
3216 htab = ppc_hash_table (info);
3217
3218 /* Create .sfpr for code to save and restore fp regs. */
3219 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3220 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 3221 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 3222 if (htab->sfpr == NULL
3223 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3224 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3225 return FALSE;
82bd7b59 3226
721956f4 3227 /* Create .glink for lazy dynamic linking support. */
4ce794b7
AM		 3228 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3229 if (htab->glink == NULL
3230 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3231 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3232 return FALSE;
82bd7b59 3233
721956f4
AM		 3234 /* Create .branch_lt for plt_branch stubs. */
3235 flags = (SEC_ALLOC | SEC_LOAD
3236 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3237 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3238 if (htab->brlt == NULL
3239 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3240 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3241 return FALSE;
721956f4
AM		 3242
3243 if (info->shared)
3244 {
3245 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3246 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3247 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3248 if (!htab->relbrlt
3249 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3250 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3251 return FALSE;
721956f4 3252 }
b34976b6 3253 return TRUE;
82bd7b59
AM		 3254}
3255
e717da7e
AM		 3256/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3257 not already done. */
65f38f15 3258
b34976b6 3259static bfd_boolean
e717da7e 3260create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3261{
e717da7e
AM		 3262 asection *got, *relgot;
3263 flagword flags;
3264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3265
4ce794b7 3266 if (!htab->got)
e717da7e
AM		 3267 {
3268 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3269 return FALSE;
3270
3271 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3272 if (!htab->got)
3273 abort ();
3274 }
3275
3276 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3277 | SEC_LINKER_CREATED);
3278
3279 got = bfd_make_section (abfd, ".got");
3280 if (!got
3281 || !bfd_set_section_flags (abfd, got, flags)
3282 || !bfd_set_section_alignment (abfd, got, 3))
3283 return FALSE;
65f38f15 3284
e717da7e
AM		 3285 relgot = bfd_make_section (abfd, ".rela.got");
3286 if (!relgot
3287 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3288 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3289 return FALSE;
e717da7e
AM		 3290
3291 ppc64_elf_tdata (abfd)->got = got;
3292 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3293 return TRUE;
65f38f15 3294}
5bd4f169 3295
82bd7b59 3296/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3297
b34976b6 3298static bfd_boolean
4ce794b7 3299ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3300{
65f38f15 3301 struct ppc_link_hash_table *htab;
5bd4f169 3302
65f38f15 3303 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3304 return FALSE;
65f38f15 3305
e717da7e
AM		 3306 htab = ppc_hash_table (info);
3307 if (!htab->got)
3308 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3309 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3310 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3311 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3312 if (!info->shared)
4ce794b7 3313 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3314
e717da7e 3315 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3316 || (!info->shared && !htab->relbss))
65f38f15
AM		 3317 abort ();
3318
b34976b6 3319 return TRUE;
5bd4f169
AM		 3320}
3321
65f38f15
AM		 3322/* Copy the extra info we tack onto an elf_link_hash_entry. */
3323
3324static void
9c5bfbb7
AM		 3325ppc64_elf_copy_indirect_symbol
3326 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3327 struct elf_link_hash_entry *dir,
3328 struct elf_link_hash_entry *ind)
65f38f15
AM		 3329{
3330 struct ppc_link_hash_entry *edir, *eind;
81848ca0 3331 flagword mask;
65f38f15
AM		 3332
3333 edir = (struct ppc_link_hash_entry *) dir;
3334 eind = (struct ppc_link_hash_entry *) ind;
3335
411e1bfb 3336 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3337 if (eind->dyn_relocs != NULL)
65f38f15 3338 {
bbd7ec4a
AM		 3339 if (edir->dyn_relocs != NULL)
3340 {
3341 struct ppc_dyn_relocs **pp;
3342 struct ppc_dyn_relocs *p;
3343
411e1bfb 3344 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3345 abort ();
3346
3347 /* Add reloc counts against the weak sym to the strong sym
3348 list. Merge any entries against the same section. */
3349 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3350 {
3351 struct ppc_dyn_relocs *q;
3352
3353 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3354 if (q->sec == p->sec)
3355 {
3356 q->pc_count += p->pc_count;
3357 q->count += p->count;
3358 *pp = p->next;
3359 break;
3360 }
3361 if (q == NULL)
3362 pp = &p->next;
3363 }
3364 *pp = edir->dyn_relocs;
3365 }
3366
65f38f15
AM		 3367 edir->dyn_relocs = eind->dyn_relocs;
3368 eind->dyn_relocs = NULL;
3369 }
65f38f15 3370
6349e628
AM		 3371 edir->is_func |= eind->is_func;
3372 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3373 edir->tls_mask |= eind->tls_mask;
6349e628 3374
81848ca0 3375 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3addb0a9
DJ		 3376 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3377 | ELF_LINK_HASH_NEEDS_PLT);
81848ca0
AM		 3378 /* If called to transfer flags for a weakdef during processing
3379 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3380 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3381 if (ELIMINATE_COPY_RELOCS
3382 && eind->elf.root.type != bfd_link_hash_indirect
3383 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3384 mask &= ~ELF_LINK_NON_GOT_REF;
3385
3386 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
6349e628
AM		 3387
3388 /* If we were called to copy over info for a weak sym, that's all. */
3389 if (eind->elf.root.type != bfd_link_hash_indirect)
3390 return;
3391
81848ca0
AM		 3392 /* Copy over got entries that we may have already seen to the
3393 symbol which just became indirect. */
411e1bfb
AM		 3394 if (eind->elf.got.glist != NULL)
3395 {
3396 if (edir->elf.got.glist != NULL)
3397 {
3398 struct got_entry **entp;
3399 struct got_entry *ent;
3400
3401 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3402 {
3403 struct got_entry *dent;
3404
3405 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3406 if (dent->addend == ent->addend
e717da7e 3407 && dent->owner == ent->owner
411e1bfb
AM		 3408 && dent->tls_type == ent->tls_type)
3409 {
3410 dent->got.refcount += ent->got.refcount;
3411 *entp = ent->next;
3412 break;
3413 }
3414 if (dent == NULL)
3415 entp = &ent->next;
3416 }
3417 *entp = edir->elf.got.glist;
3418 }
3419
3420 edir->elf.got.glist = eind->elf.got.glist;
3421 eind->elf.got.glist = NULL;
3422 }
3423
3424 /* And plt entries. */
3425 if (eind->elf.plt.plist != NULL)
3426 {
3427 if (edir->elf.plt.plist != NULL)
3428 {
3429 struct plt_entry **entp;
3430 struct plt_entry *ent;
3431
3432 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3433 {
3434 struct plt_entry *dent;
3435
3436 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3437 if (dent->addend == ent->addend)
3438 {
3439 dent->plt.refcount += ent->plt.refcount;
3440 *entp = ent->next;
3441 break;
3442 }
3443 if (dent == NULL)
3444 entp = &ent->next;
3445 }
3446 *entp = edir->elf.plt.plist;
3447 }
3448
3449 edir->elf.plt.plist = eind->elf.plt.plist;
3450 eind->elf.plt.plist = NULL;
3451 }
3452
411e1bfb
AM		 3453 if (edir->elf.dynindx == -1)
3454 {
3455 edir->elf.dynindx = eind->elf.dynindx;
3456 edir->elf.dynstr_index = eind->elf.dynstr_index;
3457 eind->elf.dynindx = -1;
3458 eind->elf.dynstr_index = 0;
3459 }
3460 else
3461 BFD_ASSERT (eind->elf.dynindx == -1);
3462}
3463
555cd476
AM		 3464/* Hack symbols defined in .opd sections to be function type. */
3465
3466static bfd_boolean
3467ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3468 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3469 Elf_Internal_Sym *isym,
3470 const char **name ATTRIBUTE_UNUSED,
3471 flagword *flags ATTRIBUTE_UNUSED,
3472 asection **sec,
3473 bfd_vma *value ATTRIBUTE_UNUSED)
3474{
3475 if (strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3476 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3477 return TRUE;
3478}
3479
411e1bfb 3480static bfd_boolean
4ce794b7
AM		 3481update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
3482 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 3483{
3484 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 3485 char *local_got_tls_masks;
411e1bfb
AM		 3486
3487 if (local_got_ents == NULL)
3488 {
3489 bfd_size_type size = symtab_hdr->sh_info;
3490
e7b938ca 3491 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 3492 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 3493 if (local_got_ents == NULL)
3494 return FALSE;
3495 elf_local_got_ents (abfd) = local_got_ents;
3496 }
3497
3498 if ((tls_type & TLS_EXPLICIT) == 0)
3499 {
3500 struct got_entry *ent;
3501
3502 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 3503 if (ent->addend == r_addend
3504 && ent->owner == abfd
3505 && ent->tls_type == tls_type)
411e1bfb
AM		 3506 break;
3507 if (ent == NULL)
3508 {
3509 bfd_size_type amt = sizeof (*ent);
4ce794b7 3510 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 3511 if (ent == NULL)
3512 return FALSE;
3513 ent->next = local_got_ents[r_symndx];
3514 ent->addend = r_addend;
e717da7e 3515 ent->owner = abfd;
411e1bfb
AM		 3516 ent->tls_type = tls_type;
3517 ent->got.refcount = 0;
3518 local_got_ents[r_symndx] = ent;
3519 }
3520 ent->got.refcount += 1;
3521 }
3522
e7b938ca
AM		 3523 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3524 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 3525 return TRUE;
65f38f15
AM		 3526}
3527
411e1bfb 3528static bfd_boolean
4ce794b7 3529update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 3530{
411e1bfb 3531 struct plt_entry *ent;
1e2f5b6e 3532
411e1bfb
AM		 3533 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3534 if (ent->addend == addend)
3535 break;
3536 if (ent == NULL)
1e2f5b6e 3537 {
411e1bfb 3538 bfd_size_type amt = sizeof (*ent);
4ce794b7 3539 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 3540 if (ent == NULL)
3541 return FALSE;
3542 ent->next = eh->elf.plt.plist;
3543 ent->addend = addend;
3544 ent->plt.refcount = 0;
3545 eh->elf.plt.plist = ent;
1e2f5b6e 3546 }
411e1bfb
AM		 3547 ent->plt.refcount += 1;
3548 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3549 eh->is_func = 1;
b34976b6 3550 return TRUE;
1e2f5b6e
AM		 3551}
3552
50bc7936
AM		 3553/* Find the function descriptor hash entry from the given function code
3554 hash entry FH. Link the entries via their OH fields. */
3555static struct ppc_link_hash_entry *
3556get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3557{
34814b9f 3558 struct ppc_link_hash_entry *fdh = fh->oh;
50bc7936
AM		 3559
3560 if (fdh == NULL)
3561 {
3562 const char *fd_name = fh->elf.root.root.string + 1;
3563
3564 fdh = (struct ppc_link_hash_entry *)
3565 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3566 if (fdh != NULL)
3567 {
3568 fdh->is_func_descriptor = 1;
34814b9f 3569 fdh->oh = fh;
50bc7936 3570 fh->is_func = 1;
34814b9f 3571 fh->oh = fdh;
50bc7936
AM		 3572 }
3573 }
3574
3575 return fdh;
3576}
3577
5bd4f169 3578/* Look through the relocs for a section during the first phase, and
65f38f15 3579 calculate needed space in the global offset table, procedure
5d1634d7 3580 linkage table, and dynamic reloc sections. */
5bd4f169 3581
b34976b6 3582static bfd_boolean
4ce794b7
AM		 3583ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
3584 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 3585{
65f38f15 3586 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3587 Elf_Internal_Shdr *symtab_hdr;
3588 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3589 const Elf_Internal_Rela *rel;
3590 const Elf_Internal_Rela *rel_end;
5bd4f169 3591 asection *sreloc;
1e2f5b6e 3592 asection **opd_sym_map;
5bd4f169 3593
1049f94e 3594 if (info->relocatable)
b34976b6 3595 return TRUE;
5bd4f169 3596
680a3378
AM		 3597 /* Don't do anything special with non-loaded, non-alloced sections.
3598 In particular, any relocs in such sections should not affect GOT
3599 and PLT reference counting (ie. we don't allow them to create GOT
3600 or PLT entries), there's no possibility or desire to optimize TLS
3601 relocs, and there's not much point in propagating relocs to shared
3602 libs that the dynamic linker won't relocate. */
3603 if ((sec->flags & SEC_ALLOC) == 0)
3604 return TRUE;
3605
65f38f15 3606 htab = ppc_hash_table (info);
5bd4f169 3607 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 3608
3609 sym_hashes = elf_sym_hashes (abfd);
3610 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 3611 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3612 - symtab_hdr->sh_info);
5bd4f169
AM		 3613
3614 sreloc = NULL;
1e2f5b6e
AM		 3615 opd_sym_map = NULL;
3616 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3617 {
3618 /* Garbage collection needs some extra help with .opd sections.
3619 We don't want to necessarily keep everything referenced by
3620 relocs in .opd, as that would keep all functions. Instead,
3621 if we reference an .opd symbol (a function descriptor), we
3622 want to keep the function code symbol's section. This is
3623 easy for global symbols, but for local syms we need to keep
3624 information about the associated function section. Later, if
3625 edit_opd deletes entries, we'll use this array to adjust
3626 local syms in .opd. */
3627 union opd_info {
3628 asection *func_section;
3629 long entry_adjust;
3630 };
3631 bfd_size_type amt;
3632
eea6121a 3633 amt = sec->size * sizeof (union opd_info) / 24;
4ce794b7 3634 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 3635 if (opd_sym_map == NULL)
b34976b6 3636 return FALSE;
f0abc2a1 3637 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 3638 }
5bd4f169 3639
82bd7b59
AM		 3640 if (htab->sfpr == NULL
3641 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 3642 return FALSE;
82bd7b59 3643
5bd4f169
AM		 3644 rel_end = relocs + sec->reloc_count;
3645 for (rel = relocs; rel < rel_end; rel++)
3646 {
3647 unsigned long r_symndx;
3648 struct elf_link_hash_entry *h;
04c9666a 3649 enum elf_ppc64_reloc_type r_type;
411e1bfb 3650 int tls_type = 0;
5bd4f169
AM		 3651
3652 r_symndx = ELF64_R_SYM (rel->r_info);
3653 if (r_symndx < symtab_hdr->sh_info)
3654 h = NULL;
3655 else
3656 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3657
4ce794b7 3658 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 3659 switch (r_type)
5bd4f169 3660 {
411e1bfb
AM		 3661 case R_PPC64_GOT_TLSLD16:
3662 case R_PPC64_GOT_TLSLD16_LO:
3663 case R_PPC64_GOT_TLSLD16_HI:
3664 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 3665 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 3666 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 3667 goto dogottls;
3668
3669 case R_PPC64_GOT_TLSGD16:
3670 case R_PPC64_GOT_TLSGD16_LO:
3671 case R_PPC64_GOT_TLSGD16_HI:
3672 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 3673 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 3674 goto dogottls;
3675
3676 case R_PPC64_GOT_TPREL16_DS:
3677 case R_PPC64_GOT_TPREL16_LO_DS:
3678 case R_PPC64_GOT_TPREL16_HI:
3679 case R_PPC64_GOT_TPREL16_HA:
3680 if (info->shared)
3681 info->flags |= DF_STATIC_TLS;
3682 tls_type = TLS_TLS | TLS_TPREL;
3683 goto dogottls;
3684
3685 case R_PPC64_GOT_DTPREL16_DS:
3686 case R_PPC64_GOT_DTPREL16_LO_DS:
3687 case R_PPC64_GOT_DTPREL16_HI:
3688 case R_PPC64_GOT_DTPREL16_HA:
3689 tls_type = TLS_TLS | TLS_DTPREL;
3690 dogottls:
3691 sec->has_tls_reloc = 1;
3692 /* Fall thru */
3693
5bd4f169 3694 case R_PPC64_GOT16:
5bd4f169 3695 case R_PPC64_GOT16_DS:
65f38f15
AM		 3696 case R_PPC64_GOT16_HA:
3697 case R_PPC64_GOT16_HI:
3698 case R_PPC64_GOT16_LO:
5bd4f169 3699 case R_PPC64_GOT16_LO_DS:
65f38f15 3700 /* This symbol requires a global offset table entry. */
ad8e1ba5 3701 sec->has_gp_reloc = 1;
e717da7e
AM		 3702 if (ppc64_elf_tdata (abfd)->got == NULL
3703 && !create_got_section (abfd, info))
b34976b6 3704 return FALSE;
5bd4f169
AM		 3705
3706 if (h != NULL)
3707 {
411e1bfb
AM		 3708 struct ppc_link_hash_entry *eh;
3709 struct got_entry *ent;
65f38f15 3710
411e1bfb
AM		 3711 eh = (struct ppc_link_hash_entry *) h;
3712 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3713 if (ent->addend == rel->r_addend
e717da7e 3714 && ent->owner == abfd
411e1bfb
AM		 3715 && ent->tls_type == tls_type)
3716 break;
3717 if (ent == NULL)
5bd4f169 3718 {
411e1bfb 3719 bfd_size_type amt = sizeof (*ent);
4ce794b7 3720 ent = bfd_alloc (abfd, amt);
411e1bfb 3721 if (ent == NULL)
b34976b6 3722 return FALSE;
411e1bfb
AM		 3723 ent->next = eh->elf.got.glist;
3724 ent->addend = rel->r_addend;
e717da7e 3725 ent->owner = abfd;
411e1bfb
AM		 3726 ent->tls_type = tls_type;
3727 ent->got.refcount = 0;
3728 eh->elf.got.glist = ent;
5bd4f169 3729 }
411e1bfb 3730 ent->got.refcount += 1;
e7b938ca 3731 eh->tls_mask |= tls_type;
5bd4f169 3732 }
411e1bfb
AM		 3733 else
3734 /* This is a global offset table entry for a local symbol. */
3735 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3736 rel->r_addend, tls_type))
3737 return FALSE;
5bd4f169
AM		 3738 break;
3739
5bd4f169 3740 case R_PPC64_PLT16_HA:
65f38f15
AM		 3741 case R_PPC64_PLT16_HI:
3742 case R_PPC64_PLT16_LO:
3743 case R_PPC64_PLT32:
3744 case R_PPC64_PLT64:
5bd4f169 3745 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 3746 actually build the entry in adjust_dynamic_symbol,
3747 because this might be a case of linking PIC code without
3748 linking in any dynamic objects, in which case we don't
3749 need to generate a procedure linkage table after all. */
5bd4f169
AM		 3750 if (h == NULL)
3751 {
3752 /* It does not make sense to have a procedure linkage
3fad3c7c 3753 table entry for a local symbol. */
5bd4f169 3754 bfd_set_error (bfd_error_bad_value);
b34976b6 3755 return FALSE;
5bd4f169 3756 }
411e1bfb
AM		 3757 else
3758 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3759 rel->r_addend))
3760 return FALSE;
5bd4f169
AM		 3761 break;
3762
3763 /* The following relocations don't need to propagate the
3764 relocation if linking a shared object since they are
3765 section relative. */
3766 case R_PPC64_SECTOFF:
3767 case R_PPC64_SECTOFF_LO:
3768 case R_PPC64_SECTOFF_HI:
3769 case R_PPC64_SECTOFF_HA:
3770 case R_PPC64_SECTOFF_DS:
3771 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 3772 case R_PPC64_DTPREL16:
3773 case R_PPC64_DTPREL16_LO:
3774 case R_PPC64_DTPREL16_HI:
3775 case R_PPC64_DTPREL16_HA:
3776 case R_PPC64_DTPREL16_DS:
3777 case R_PPC64_DTPREL16_LO_DS:
3778 case R_PPC64_DTPREL16_HIGHER:
3779 case R_PPC64_DTPREL16_HIGHERA:
3780 case R_PPC64_DTPREL16_HIGHEST:
3781 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 3782 break;
3783
ad8e1ba5
AM		 3784 /* Nor do these. */
3785 case R_PPC64_TOC16:
3786 case R_PPC64_TOC16_LO:
3787 case R_PPC64_TOC16_HI:
3788 case R_PPC64_TOC16_HA:
3789 case R_PPC64_TOC16_DS:
3790 case R_PPC64_TOC16_LO_DS:
3791 sec->has_gp_reloc = 1;
3792 break;
3793
5bd4f169
AM		 3794 /* This relocation describes the C++ object vtable hierarchy.
3795 Reconstruct it for later use during GC. */
3796 case R_PPC64_GNU_VTINHERIT:
c152c796 3797 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3798 return FALSE;
5bd4f169
AM		 3799 break;
3800
3801 /* This relocation describes which C++ vtable entries are actually
3802 used. Record for later use during GC. */
3803 case R_PPC64_GNU_VTENTRY:
c152c796 3804 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 3805 return FALSE;
5bd4f169
AM		 3806 break;
3807
721956f4
AM		 3808 case R_PPC64_REL14:
3809 case R_PPC64_REL14_BRTAKEN:
3810 case R_PPC64_REL14_BRNTAKEN:
3811 htab->has_14bit_branch = 1;
3812 /* Fall through. */
3813
5d1634d7 3814 case R_PPC64_REL24:
e86ce104
AM		 3815 if (h != NULL
3816 && h->root.root.string[0] == '.'
3817 && h->root.root.string[1] != 0)
5d1634d7
AM		 3818 {
3819 /* We may need a .plt entry if the function this reloc
3820 refers to is in a shared lib. */
411e1bfb
AM		 3821 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3822 rel->r_addend))
3823 return FALSE;
3824 if (h == htab->tls_get_addr)
3825 sec->has_tls_reloc = 1;
a48ebf4d
AM		 3826 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3827 == 0)
3828 && (h->root.root.string[15] == 0
3829 || h->root.root.string[15] == '@'))
411e1bfb
AM		 3830 {
3831 htab->tls_get_addr = h;
3832 sec->has_tls_reloc = 1;
3833 }
3834 }
3835 break;
3836
3837 case R_PPC64_TPREL64:
3838 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3839 if (info->shared)
3840 info->flags |= DF_STATIC_TLS;
3841 goto dotlstoc;
3842
3843 case R_PPC64_DTPMOD64:
3844 if (rel + 1 < rel_end
3845 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3846 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 3847 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 3848 else
951fd09b 3849 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 3850 goto dotlstoc;
3851
3852 case R_PPC64_DTPREL64:
3853 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3854 if (rel != relocs
3855 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3856 && rel[-1].r_offset == rel->r_offset - 8)
3857 /* This is the second reloc of a dtpmod, dtprel pair.
3858 Don't mark with TLS_DTPREL. */
3859 goto dodyn;
3860
3861 dotlstoc:
3862 sec->has_tls_reloc = 1;
3863 if (h != NULL)
3864 {
3865 struct ppc_link_hash_entry *eh;
3866 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 3867 eh->tls_mask |= tls_type;
411e1bfb
AM		 3868 }
3869 else
3870 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3871 rel->r_addend, tls_type))
3872 return FALSE;
3873
3874 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3875 {
e7b938ca 3876 /* One extra to simplify get_tls_mask. */
eea6121a 3877 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 3878 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 3879 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3880 return FALSE;
3881 }
3882 BFD_ASSERT (rel->r_offset % 8 == 0);
3883 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 3884
3885 /* Mark the second slot of a GD or LD entry.
3886 -1 to indicate GD and -2 to indicate LD. */
3887 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3888 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3889 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3890 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 3891 goto dodyn;
3892
3893 case R_PPC64_TPREL16:
3894 case R_PPC64_TPREL16_LO:
3895 case R_PPC64_TPREL16_HI:
3896 case R_PPC64_TPREL16_HA:
3897 case R_PPC64_TPREL16_DS:
3898 case R_PPC64_TPREL16_LO_DS:
3899 case R_PPC64_TPREL16_HIGHER:
3900 case R_PPC64_TPREL16_HIGHERA:
3901 case R_PPC64_TPREL16_HIGHEST:
3902 case R_PPC64_TPREL16_HIGHESTA:
3903 if (info->shared)
3904 {
3905 info->flags |= DF_STATIC_TLS;
3906 goto dodyn;
5d1634d7
AM		 3907 }
3908 break;
3909
e86ce104 3910 case R_PPC64_ADDR64:
1e2f5b6e 3911 if (opd_sym_map != NULL
e86ce104
AM		 3912 && h != NULL
3913 && h->root.root.string[0] == '.'
3914 && h->root.root.string[1] != 0)
50bc7936 3915 get_fdh ((struct ppc_link_hash_entry *) h, htab);
e86ce104 3916
1e2f5b6e
AM		 3917 if (opd_sym_map != NULL
3918 && h == NULL
3919 && rel + 1 < rel_end
4ce794b7 3920 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e
AM		 3921 {
3922 asection *s;
3923
3924 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3925 r_symndx);
3926 if (s == NULL)
b34976b6 3927 return FALSE;
1e2f5b6e
AM		 3928 else if (s != sec)
3929 opd_sym_map[rel->r_offset / 24] = s;
3930 }
e86ce104
AM		 3931 /* Fall through. */
3932
04c9666a 3933 case R_PPC64_REL30:
5bd4f169 3934 case R_PPC64_REL32:
04c9666a 3935 case R_PPC64_REL64:
65f38f15
AM		 3936 case R_PPC64_ADDR14:
3937 case R_PPC64_ADDR14_BRNTAKEN:
3938 case R_PPC64_ADDR14_BRTAKEN:
3939 case R_PPC64_ADDR16:
3940 case R_PPC64_ADDR16_DS:
3941 case R_PPC64_ADDR16_HA:
3942 case R_PPC64_ADDR16_HI:
3943 case R_PPC64_ADDR16_HIGHER:
3944 case R_PPC64_ADDR16_HIGHERA:
3945 case R_PPC64_ADDR16_HIGHEST:
3946 case R_PPC64_ADDR16_HIGHESTA:
3947 case R_PPC64_ADDR16_LO:
3948 case R_PPC64_ADDR16_LO_DS:
3949 case R_PPC64_ADDR24:
65f38f15 3950 case R_PPC64_ADDR32:
65f38f15
AM		 3951 case R_PPC64_UADDR16:
3952 case R_PPC64_UADDR32:
3953 case R_PPC64_UADDR64:
5bd4f169 3954 case R_PPC64_TOC:
81848ca0
AM		 3955 if (h != NULL && !info->shared)
3956 /* We may need a copy reloc. */
3957 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3958
41bd81ab 3959 /* Don't propagate .opd relocs. */
1e2f5b6e 3960 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 3961 break;
e86ce104 3962
65f38f15
AM		 3963 /* If we are creating a shared library, and this is a reloc
3964 against a global symbol, or a non PC relative reloc
3965 against a local symbol, then we need to copy the reloc
3966 into the shared library. However, if we are linking with
3967 -Bsymbolic, we do not need to copy a reloc against a
3968 global symbol which is defined in an object we are
3969 including in the link (i.e., DEF_REGULAR is set). At
3970 this point we have not seen all the input files, so it is
3971 possible that DEF_REGULAR is not set now but will be set
3972 later (it is never cleared). In case of a weak definition,
3973 DEF_REGULAR may be cleared later by a strong definition in
3974 a shared library. We account for that possibility below by
f4656909 3975 storing information in the dyn_relocs field of the hash
65f38f15
AM		 3976 table entry. A similar situation occurs when creating
3977 shared libraries and symbol visibility changes render the
3978 symbol local.
3979
3980 If on the other hand, we are creating an executable, we
3981 may need to keep relocations for symbols satisfied by a
3982 dynamic library if we manage to avoid copy relocs for the
3983 symbol. */
411e1bfb 3984 dodyn:
65f38f15 3985 if ((info->shared
411e1bfb 3986 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 3987 || (h != NULL
3988 && (! info->symbolic
3989 || h->root.type == bfd_link_hash_defweak
3990 || (h->elf_link_hash_flags
3991 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
f4656909
AM		 3992 || (ELIMINATE_COPY_RELOCS
3993 && !info->shared
65f38f15
AM		 3994 && h != NULL
3995 && (h->root.type == bfd_link_hash_defweak
3996 || (h->elf_link_hash_flags
3997 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 3998 {
ec338859
AM		 3999 struct ppc_dyn_relocs *p;
4000 struct ppc_dyn_relocs **head;
4001
65f38f15
AM		 4002 /* We must copy these reloc types into the output file.
4003 Create a reloc section in dynobj and make room for
4004 this reloc. */
5bd4f169
AM		 4005 if (sreloc == NULL)
4006 {
4007 const char *name;
65f38f15 4008 bfd *dynobj;
5bd4f169
AM		 4009
4010 name = (bfd_elf_string_from_elf_section
4011 (abfd,
4012 elf_elfheader (abfd)->e_shstrndx,
4013 elf_section_data (sec)->rel_hdr.sh_name));
4014 if (name == NULL)
b34976b6 4015 return FALSE;
5bd4f169 4016
65f38f15
AM		 4017 if (strncmp (name, ".rela", 5) != 0
4018 || strcmp (bfd_get_section_name (abfd, sec),
4019 name + 5) != 0)
4020 {
4021 (*_bfd_error_handler)
4022 (_("%s: bad relocation section name `%s\'"),
4023 bfd_archive_filename (abfd), name);
5d1634d7 4024 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4025 }
4026
65f38f15 4027 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4028 sreloc = bfd_get_section_by_name (dynobj, name);
4029 if (sreloc == NULL)
4030 {
4031 flagword flags;
4032
4033 sreloc = bfd_make_section (dynobj, name);
4034 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4035 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4036 if ((sec->flags & SEC_ALLOC) != 0)
4037 flags |= SEC_ALLOC | SEC_LOAD;
4038 if (sreloc == NULL
4039 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 4040 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4041 return FALSE;
5bd4f169 4042 }
65f38f15 4043 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4044 }
4045
65f38f15
AM		 4046 /* If this is a global symbol, we count the number of
4047 relocations we need for this symbol. */
4048 if (h != NULL)
4049 {
ec338859 4050 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4051 }
4052 else
4053 {
ec338859
AM		 4054 /* Track dynamic relocs needed for local syms too.
4055 We really need local syms available to do this
4056 easily. Oh well. */
4057
4058 asection *s;
4059 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4060 sec, r_symndx);
4061 if (s == NULL)
b34976b6 4062 return FALSE;
ec338859
AM		 4063
4064 head = ((struct ppc_dyn_relocs **)
4065 &elf_section_data (s)->local_dynrel);
65f38f15 4066 }
ec338859
AM		 4067
4068 p = *head;
4069 if (p == NULL || p->sec != sec)
4070 {
4ce794b7 4071 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4072 if (p == NULL)
b34976b6 4073 return FALSE;
ec338859
AM		 4074 p->next = *head;
4075 *head = p;
4076 p->sec = sec;
4077 p->count = 0;
4078 p->pc_count = 0;
4079 }
4080
4081 p->count += 1;
411e1bfb 4082 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4083 p->pc_count += 1;
65f38f15 4084 }
5bd4f169 4085 break;
65f38f15
AM		 4086
4087 default:
96e0dda4 4088 break;
5bd4f169
AM		 4089 }
4090 }
4091
b34976b6 4092 return TRUE;
5bd4f169
AM		 4093}
4094
4095/* Return the section that should be marked against GC for a given
4096 relocation. */
4097
4098static asection *
4ce794b7 4099ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4100 struct bfd_link_info *info,
4ce794b7
AM		 4101 Elf_Internal_Rela *rel,
4102 struct elf_link_hash_entry *h,
4103 Elf_Internal_Sym *sym)
5bd4f169 4104{
ccfa59ea
AM		 4105 asection *rsec;
4106
4107 /* First mark all our entry sym sections. */
4108 if (info->gc_sym_list != NULL)
4109 {
4110 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4111 struct bfd_sym_chain *sym = info->gc_sym_list;
4112
4113 info->gc_sym_list = NULL;
4114 do
4115 {
4116 struct ppc_link_hash_entry *eh;
4117
4118 eh = (struct ppc_link_hash_entry *)
4119 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4120 if (eh == NULL)
4121 continue;
4122 if (eh->elf.root.type != bfd_link_hash_defined
4123 && eh->elf.root.type != bfd_link_hash_defweak)
4124 continue;
4125
4126 if (eh->is_func_descriptor)
4127 rsec = eh->oh->elf.root.u.def.section;
4128 else
4129 continue;
4130
4131 if (!rsec->gc_mark)
4132 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4133
4134 rsec = eh->elf.root.u.def.section;
4135 if (!rsec->gc_mark)
4136 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4137
4138 sym = sym->next;
4139 }
4140 while (sym != NULL);
4141 }
4142
4143 /* Syms return NULL if we're marking .opd, so we avoid marking all
4144 function sections, as all functions are referenced in .opd. */
4145 rsec = NULL;
4146 if (get_opd_info (sec) != NULL)
4147 return rsec;
1e2f5b6e 4148
5bd4f169
AM		 4149 if (h != NULL)
4150 {
04c9666a 4151 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4152 struct ppc_link_hash_entry *eh;
a33d1f77 4153
4ce794b7 4154 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4155 switch (r_type)
5bd4f169
AM		 4156 {
4157 case R_PPC64_GNU_VTINHERIT:
4158 case R_PPC64_GNU_VTENTRY:
4159 break;
4160
4161 default:
4162 switch (h->root.type)
4163 {
4164 case bfd_link_hash_defined:
4165 case bfd_link_hash_defweak:
ccfa59ea
AM		 4166 eh = (struct ppc_link_hash_entry *) h;
4167 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4168 eh = eh->oh;
1e2f5b6e
AM		 4169
4170 /* Function descriptor syms cause the associated
4171 function code sym section to be marked. */
ccfa59ea
AM		 4172 if (eh->is_func_descriptor)
4173 {
4174 /* They also mark their opd section. */
4175 if (!eh->elf.root.u.def.section->gc_mark)
4176 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4177 ppc64_elf_gc_mark_hook);
4178
4179 rsec = eh->oh->elf.root.u.def.section;
4180 }
4181 else
1e2f5b6e
AM		 4182 rsec = h->root.u.def.section;
4183 break;
5bd4f169
AM		 4184
4185 case bfd_link_hash_common:
1e2f5b6e
AM		 4186 rsec = h->root.u.c.p->section;
4187 break;
5bd4f169
AM		 4188
4189 default:
4190 break;
4191 }
4192 }
4193 }
4194 else
4195 {
1e2f5b6e
AM		 4196 asection **opd_sym_section;
4197
4198 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 4199 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 4200 if (opd_sym_section != NULL)
ccfa59ea
AM		 4201 {
4202 if (!rsec->gc_mark)
4203 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4204
4205 rsec = opd_sym_section[sym->st_value / 24];
4206 }
5bd4f169
AM		 4207 }
4208
1e2f5b6e 4209 return rsec;
5bd4f169
AM		 4210}
4211
65f38f15
AM		 4212/* Update the .got, .plt. and dynamic reloc reference counts for the
4213 section being removed. */
5bd4f169 4214
b34976b6 4215static bfd_boolean
4ce794b7
AM		 4216ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4217 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4218{
411e1bfb 4219 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4220 Elf_Internal_Shdr *symtab_hdr;
4221 struct elf_link_hash_entry **sym_hashes;
411e1bfb 4222 struct got_entry **local_got_ents;
5bd4f169 4223 const Elf_Internal_Rela *rel, *relend;
5bd4f169 4224
680a3378
AM		 4225 if ((sec->flags & SEC_ALLOC) == 0)
4226 return TRUE;
4227
ec338859
AM		 4228 elf_section_data (sec)->local_dynrel = NULL;
4229
411e1bfb 4230 htab = ppc_hash_table (info);
5bd4f169
AM		 4231 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4232 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 4233 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 4234
4235 relend = relocs + sec->reloc_count;
4236 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 4237 {
4238 unsigned long r_symndx;
04c9666a 4239 enum elf_ppc64_reloc_type r_type;
58ac9f71 4240 struct elf_link_hash_entry *h = NULL;
411e1bfb 4241 char tls_type = 0;
5bd4f169 4242
a33d1f77 4243 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 4244 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 4245 if (r_symndx >= symtab_hdr->sh_info)
4246 {
4247 struct ppc_link_hash_entry *eh;
4248 struct ppc_dyn_relocs **pp;
4249 struct ppc_dyn_relocs *p;
4250
4251 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4252 eh = (struct ppc_link_hash_entry *) h;
4253
4254 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4255 if (p->sec == sec)
4256 {
4257 /* Everything must go for SEC. */
4258 *pp = p->next;
4259 break;
4260 }
4261 }
4262
a33d1f77
AM		 4263 switch (r_type)
4264 {
411e1bfb
AM		 4265 case R_PPC64_GOT_TLSLD16:
4266 case R_PPC64_GOT_TLSLD16_LO:
4267 case R_PPC64_GOT_TLSLD16_HI:
4268 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4269 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 4270 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4271 goto dogot;
4272
4273 case R_PPC64_GOT_TLSGD16:
4274 case R_PPC64_GOT_TLSGD16_LO:
4275 case R_PPC64_GOT_TLSGD16_HI:
4276 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4277 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4278 goto dogot;
4279
4280 case R_PPC64_GOT_TPREL16_DS:
4281 case R_PPC64_GOT_TPREL16_LO_DS:
4282 case R_PPC64_GOT_TPREL16_HI:
4283 case R_PPC64_GOT_TPREL16_HA:
4284 tls_type = TLS_TLS | TLS_TPREL;
4285 goto dogot;
4286
4287 case R_PPC64_GOT_DTPREL16_DS:
4288 case R_PPC64_GOT_DTPREL16_LO_DS:
4289 case R_PPC64_GOT_DTPREL16_HI:
4290 case R_PPC64_GOT_DTPREL16_HA:
4291 tls_type = TLS_TLS | TLS_DTPREL;
4292 goto dogot;
4293
a33d1f77
AM		 4294 case R_PPC64_GOT16:
4295 case R_PPC64_GOT16_DS:
4296 case R_PPC64_GOT16_HA:
4297 case R_PPC64_GOT16_HI:
4298 case R_PPC64_GOT16_LO:
4299 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 4300 dogot:
4301 {
4302 struct got_entry *ent;
4303
58ac9f71
AM		 4304 if (h != NULL)
4305 ent = h->got.glist;
411e1bfb
AM		 4306 else
4307 ent = local_got_ents[r_symndx];
4308
4309 for (; ent != NULL; ent = ent->next)
4310 if (ent->addend == rel->r_addend
e717da7e 4311 && ent->owner == abfd
411e1bfb
AM		 4312 && ent->tls_type == tls_type)
4313 break;
4314 if (ent == NULL)
4315 abort ();
4316 if (ent->got.refcount > 0)
4317 ent->got.refcount -= 1;
4318 }
a33d1f77 4319 break;
65f38f15 4320
a33d1f77
AM		 4321 case R_PPC64_PLT16_HA:
4322 case R_PPC64_PLT16_HI:
4323 case R_PPC64_PLT16_LO:
4324 case R_PPC64_PLT32:
4325 case R_PPC64_PLT64:
721956f4
AM		 4326 case R_PPC64_REL14:
4327 case R_PPC64_REL14_BRNTAKEN:
4328 case R_PPC64_REL14_BRTAKEN:
5d1634d7 4329 case R_PPC64_REL24:
58ac9f71 4330 if (h != NULL)
5d1634d7 4331 {
411e1bfb
AM		 4332 struct plt_entry *ent;
4333
411e1bfb
AM		 4334 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4335 if (ent->addend == rel->r_addend)
4336 break;
4337 if (ent == NULL)
4338 abort ();
4339 if (ent->plt.refcount > 0)
4340 ent->plt.refcount -= 1;
5d1634d7 4341 }
e86ce104 4342 break;
5d1634d7 4343
a33d1f77
AM		 4344 default:
4345 break;
4346 }
4347 }
b34976b6 4348 return TRUE;
5bd4f169
AM		 4349}
4350
e86ce104
AM		 4351/* Called via elf_link_hash_traverse to transfer dynamic linking
4352 information on function code symbol entries to their corresponding
4353 function descriptor symbol entries. */
b34976b6 4354static bfd_boolean
4ce794b7 4355func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 4356{
e86ce104 4357 struct bfd_link_info *info;
65f38f15 4358 struct ppc_link_hash_table *htab;
411e1bfb 4359 struct plt_entry *ent;
50bc7936
AM		 4360 struct ppc_link_hash_entry *fh;
4361 struct ppc_link_hash_entry *fdh;
4362 bfd_boolean force_local;
5bd4f169 4363
50bc7936
AM		 4364 fh = (struct ppc_link_hash_entry *) h;
4365 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 4366 return TRUE;
e86ce104 4367
50bc7936
AM		 4368 if (fh->elf.root.type == bfd_link_hash_warning)
4369 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 4370
4ce794b7 4371 info = inf;
65f38f15 4372 htab = ppc_hash_table (info);
5bd4f169 4373
e86ce104
AM		 4374 /* If this is a function code symbol, transfer dynamic linking
4375 information to the function descriptor symbol. */
50bc7936 4376 if (!fh->is_func)
b34976b6 4377 return TRUE;
e86ce104 4378
50bc7936 4379 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 4380 if (ent->plt.refcount > 0)
4381 break;
50bc7936
AM		 4382 if (ent == NULL
4383 || fh->elf.root.root.string[0] != '.'
4384 || fh->elf.root.root.string[1] == '\0')
4385 return TRUE;
5bd4f169 4386
50bc7936
AM		 4387 /* Find the corresponding function descriptor symbol. Create it
4388 as undefined if necessary. */
5bd4f169 4389
50bc7936
AM		 4390 fdh = get_fdh (fh, htab);
4391 if (fdh != NULL)
4392 while (fdh->elf.root.type == bfd_link_hash_indirect
4393 || fdh->elf.root.type == bfd_link_hash_warning)
4394 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 4395
50bc7936
AM		 4396 if (fdh == NULL
4397 && info->shared
4398 && (fh->elf.root.type == bfd_link_hash_undefined
4399 || fh->elf.root.type == bfd_link_hash_undefweak))
4400 {
4401 bfd *abfd;
4402 asymbol *newsym;
4403 struct bfd_link_hash_entry *bh;
4404
4405 abfd = fh->elf.root.u.undef.abfd;
4406 newsym = bfd_make_empty_symbol (abfd);
4407 newsym->name = fh->elf.root.root.string + 1;
4408 newsym->section = bfd_und_section_ptr;
4409 newsym->value = 0;
4410 newsym->flags = BSF_OBJECT;
4411 if (fh->elf.root.type == bfd_link_hash_undefweak)
4412 newsym->flags |= BSF_WEAK;
4413
4414 bh = &fdh->elf.root;
4415 if ( !(_bfd_generic_link_add_one_symbol
4416 (info, abfd, newsym->name, newsym->flags,
4417 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
648cca2c 4418 {
50bc7936 4419 return FALSE;
648cca2c 4420 }
50bc7936
AM		 4421 fdh = (struct ppc_link_hash_entry *) bh;
4422 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4423 fdh->elf.size = 24;
4424 fdh->elf.type = STT_OBJECT;
4425 }
648cca2c 4426
50bc7936
AM		 4427 if (fdh != NULL
4428 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4429 && (info->shared
4430 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4431 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
4432 || (fdh->elf.root.type == bfd_link_hash_undefweak
4433 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
4434 {
4435 if (fdh->elf.dynindx == -1)
c152c796 4436 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936
AM		 4437 return FALSE;
4438 fdh->elf.elf_link_hash_flags
4439 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
4440 | ELF_LINK_HASH_REF_DYNAMIC
4441 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4442 | ELF_LINK_NON_GOT_REF));
4443 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 4444 {
50bc7936
AM		 4445 fdh->elf.plt.plist = fh->elf.plt.plist;
4446 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
e86ce104 4447 }
50bc7936 4448 fdh->is_func_descriptor = 1;
34814b9f
AM		 4449 fdh->oh = fh;
4450 fh->oh = fdh;
e86ce104
AM		 4451 }
4452
50bc7936
AM		 4453 /* Now that the info is on the function descriptor, clear the
4454 function code sym info. Any function code syms for which we
4455 don't have a definition in a regular file, we force local.
4456 This prevents a shared library from exporting syms that have
4457 been imported from another library. Function code syms that
4458 are really in the library we must leave global to prevent the
4459 linker dragging in a definition from a static library. */
4460 force_local
4461 = (info->shared
4462 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4463 || fdh == NULL
4464 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4465 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
4466 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4467
b34976b6 4468 return TRUE;
e86ce104 4469}
40b8271b 4470
82bd7b59
AM		 4471#define MIN_SAVE_FPR 14
4472#define MAX_SAVE_FPR 31
4473
e86ce104 4474/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 4475 this hook to a) provide some gcc support functions, and b) transfer
4476 dynamic linking information gathered so far on function code symbol
4477 entries, to their corresponding function descriptor symbol entries. */
b34976b6 4478static bfd_boolean
4ce794b7
AM		 4479ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
4480 struct bfd_link_info *info)
e86ce104
AM		 4481{
4482 struct ppc_link_hash_table *htab;
82bd7b59
AM		 4483 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4484 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4485 unsigned int i;
4486 struct elf_link_hash_entry *h;
721956f4 4487 bfd_byte *p;
82bd7b59 4488 char sym[10];
e86ce104
AM		 4489
4490 htab = ppc_hash_table (info);
82bd7b59
AM		 4491
4492 if (htab->sfpr == NULL)
4493 /* We don't have any relocs. */
b34976b6 4494 return TRUE;
82bd7b59
AM		 4495
4496 /* First provide any missing ._savef* and ._restf* functions. */
4497 memcpy (sym, "._savef14", 10);
4498 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4499 {
4500 sym[7] = i / 10 + '0';
4501 sym[8] = i % 10 + '0';
b34976b6 4502 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
82bd7b59 4503 if (h != NULL
772119ce 4504 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
82bd7b59
AM		 4505 {
4506 if (lowest_savef > i)
4507 lowest_savef = i;
4508 h->root.type = bfd_link_hash_defined;
4509 h->root.u.def.section = htab->sfpr;
4510 h->root.u.def.value = (i - lowest_savef) * 4;
4511 h->type = STT_FUNC;
4512 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
772119ce 4513 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
82bd7b59
AM		 4514 }
4515 }
4516
4517 memcpy (sym, "._restf14", 10);
4518 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4519 {
4520 sym[7] = i / 10 + '0';
4521 sym[8] = i % 10 + '0';
b34976b6 4522 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
82bd7b59 4523 if (h != NULL
772119ce 4524 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
82bd7b59
AM		 4525 {
4526 if (lowest_restf > i)
4527 lowest_restf = i;
4528 h->root.type = bfd_link_hash_defined;
4529 h->root.u.def.section = htab->sfpr;
4530 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4531 + (i - lowest_restf) * 4);
4532 h->type = STT_FUNC;
4533 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
772119ce 4534 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
82bd7b59
AM		 4535 }
4536 }
4537
4ce794b7 4538 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 4539
eea6121a
AM		 4540 htab->sfpr->size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4541 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
82bd7b59 4542
eea6121a 4543 if (htab->sfpr->size == 0)
805fc799 4544 {
06da1e8e
AM		 4545 _bfd_strip_section_from_output (info, htab->sfpr);
4546 return TRUE;
805fc799 4547 }
82bd7b59 4548
eea6121a 4549 p = bfd_alloc (htab->elf.dynobj, htab->sfpr->size);
721956f4 4550 if (p == NULL)
b34976b6 4551 return FALSE;
721956f4
AM		 4552 htab->sfpr->contents = p;
4553
4554 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4555 {
4556 unsigned int fpr = i << 21;
4557 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4558 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4559 p += 4;
4560 }
4561 if (lowest_savef <= MAX_SAVE_FPR)
4562 {
82bd7b59
AM		 4563 bfd_put_32 (htab->elf.dynobj, BLR, p);
4564 p += 4;
721956f4 4565 }
82bd7b59 4566
721956f4
AM		 4567 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4568 {
4569 unsigned int fpr = i << 21;
4570 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4571 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
82bd7b59
AM		 4572 p += 4;
4573 }
06da1e8e
AM		 4574 if (lowest_restf <= MAX_SAVE_FPR)
4575 bfd_put_32 (htab->elf.dynobj, BLR, p);
82bd7b59 4576
b34976b6 4577 return TRUE;
e86ce104
AM		 4578}
4579
4580/* Adjust a symbol defined by a dynamic object and referenced by a
4581 regular object. The current definition is in some section of the
4582 dynamic object, but we're not including those sections. We have to
4583 change the definition to something the rest of the link can
4584 understand. */
4585
b34976b6 4586static bfd_boolean
4ce794b7
AM		 4587ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4588 struct elf_link_hash_entry *h)
e86ce104
AM		 4589{
4590 struct ppc_link_hash_table *htab;
e86ce104
AM		 4591 asection *s;
4592 unsigned int power_of_two;
4593
4594 htab = ppc_hash_table (info);
4595
4596 /* Deal with function syms. */
4597 if (h->type == STT_FUNC
4598 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4599 {
4600 /* Clear procedure linkage table information for any symbol that
4601 won't need a .plt entry. */
411e1bfb
AM		 4602 struct plt_entry *ent;
4603 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4604 if (ent->plt.refcount > 0)
4605 break;
e86ce104 4606 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
411e1bfb 4607 || ent == NULL
9c7a29a3
AM		 4608 || SYMBOL_CALLS_LOCAL (info, h)
4609 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4610 && h->root.type == bfd_link_hash_undefweak))
40b8271b 4611 {
411e1bfb 4612 h->plt.plist = NULL;
40b8271b 4613 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
40b8271b 4614 }
5bd4f169 4615 }
bbd7ec4a 4616 else
411e1bfb 4617 h->plt.plist = NULL;
5bd4f169
AM		 4618
4619 /* If this is a weak symbol, and there is a real definition, the
4620 processor independent code will have arranged for us to see the
4621 real definition first, and we can just use the same value. */
4622 if (h->weakdef != NULL)
4623 {
4624 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4625 || h->weakdef->root.type == bfd_link_hash_defweak);
4626 h->root.u.def.section = h->weakdef->root.u.def.section;
4627 h->root.u.def.value = h->weakdef->root.u.def.value;
a23b6845
AM		 4628 if (ELIMINATE_COPY_RELOCS)
4629 h->elf_link_hash_flags
4630 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4631 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
b34976b6 4632 return TRUE;
5bd4f169
AM		 4633 }
4634
5bd4f169
AM		 4635 /* If we are creating a shared library, we must presume that the
4636 only references to the symbol are via the global offset table.
4637 For such cases we need not do anything here; the relocations will
4638 be handled correctly by relocate_section. */
4639 if (info->shared)
b34976b6 4640 return TRUE;
5bd4f169 4641
65f38f15
AM		 4642 /* If there are no references to this symbol that do not use the
4643 GOT, we don't need to generate a copy reloc. */
4644 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
b34976b6 4645 return TRUE;
65f38f15 4646
f4656909 4647 if (ELIMINATE_COPY_RELOCS)
65f38f15 4648 {
f4656909
AM		 4649 struct ppc_link_hash_entry * eh;
4650 struct ppc_dyn_relocs *p;
65f38f15 4651
f4656909
AM		 4652 eh = (struct ppc_link_hash_entry *) h;
4653 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4654 {
4655 s = p->sec->output_section;
4656 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4657 break;
4658 }
4659
4660 /* If we didn't find any dynamic relocs in read-only sections, then
4661 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4662 if (p == NULL)
4663 {
4664 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4665 return TRUE;
4666 }
65f38f15
AM		 4667 }
4668
5d35169e 4669 if (h->plt.plist != NULL)
97b639ba
AM		 4670 {
4671 /* We should never get here, but unfortunately there are versions
4672 of gcc out there that improperly (for this ABI) put initialized
4673 function pointers, vtable refs and suchlike in read-only
4674 sections. Allow them to proceed, but warn that this might
4675 break at runtime. */
4676 (*_bfd_error_handler)
4677 (_("copy reloc against `%s' requires lazy plt linking; "
4678 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4679 h->root.root.string);
4680 }
5d35169e
AM		 4681
4682 /* This is a reference to a symbol defined by a dynamic object which
4683 is not a function. */
4684
5bd4f169
AM		 4685 /* We must allocate the symbol in our .dynbss section, which will
4686 become part of the .bss section of the executable. There will be
4687 an entry for this symbol in the .dynsym section. The dynamic
4688 object will contain position independent code, so all references
4689 from the dynamic object to this symbol will go through the global
4690 offset table. The dynamic linker will use the .dynsym entry to
4691 determine the address it must put in the global offset table, so
4692 both the dynamic object and the regular object will refer to the
4693 same memory location for the variable. */
5bd4f169 4694
04c9666a
AM		 4695 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4696 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 4697 runtime process image. We need to remember the offset into the
4698 .rela.bss section we are going to use. */
4699 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4700 {
eea6121a 4701 htab->relbss->size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 4702 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4703 }
4704
4705 /* We need to figure out the alignment required for this symbol. I
4706 have no idea how ELF linkers handle this. */
4707 power_of_two = bfd_log2 (h->size);
4708 if (power_of_two > 4)
4709 power_of_two = 4;
4710
4711 /* Apply the required alignment. */
4ce794b7 4712 s = htab->dynbss;
eea6121a 4713 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 4714 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 4715 {
65f38f15 4716 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 4717 return FALSE;
5bd4f169
AM		 4718 }
4719
4720 /* Define the symbol as being at this point in the section. */
4721 h->root.u.def.section = s;
eea6121a 4722 h->root.u.def.value = s->size;
5bd4f169
AM		 4723
4724 /* Increment the section size to make room for the symbol. */
eea6121a 4725 s->size += h->size;
5bd4f169 4726
b34976b6 4727 return TRUE;
5bd4f169
AM		 4728}
4729
e86ce104
AM		 4730/* If given a function descriptor symbol, hide both the function code
4731 sym and the descriptor. */
4732static void
4ce794b7
AM		 4733ppc64_elf_hide_symbol (struct bfd_link_info *info,
4734 struct elf_link_hash_entry *h,
4735 bfd_boolean force_local)
e86ce104 4736{
34814b9f 4737 struct ppc_link_hash_entry *eh;
e86ce104
AM		 4738 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4739
34814b9f
AM		 4740 eh = (struct ppc_link_hash_entry *) h;
4741 if (eh->is_func_descriptor)
e86ce104 4742 {
34814b9f 4743 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 4744
721956f4 4745 if (fh == NULL)
d1329ca3
AM		 4746 {
4747 const char *p, *q;
4748 struct ppc_link_hash_table *htab;
4749 char save;
4750
4751 /* We aren't supposed to use alloca in BFD because on
4752 systems which do not have alloca the version in libiberty
4753 calls xmalloc, which might cause the program to crash
4754 when it runs out of memory. This function doesn't have a
4755 return status, so there's no way to gracefully return an
4756 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 4757 accessed; It's either a string in an ELF string table,
4758 or allocated in an objalloc structure. */
d1329ca3 4759
34814b9f 4760 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 4761 save = *p;
4762 *(char *) p = '.';
4763 htab = ppc_hash_table (info);
34814b9f
AM		 4764 fh = (struct ppc_link_hash_entry *)
4765 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 4766 *(char *) p = save;
4767
4768 /* Unfortunately, if it so happens that the string we were
4769 looking for was allocated immediately before this string,
4770 then we overwrote the string terminator. That's the only
4771 reason the lookup should fail. */
4772 if (fh == NULL)
4773 {
34814b9f
AM		 4774 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
4775 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 4776 --q, --p;
34814b9f
AM		 4777 if (q < eh->elf.root.root.string && *p == '.')
4778 fh = (struct ppc_link_hash_entry *)
4779 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 4780 }
4781 if (fh != NULL)
4782 {
34814b9f
AM		 4783 eh->oh = fh;
4784 fh->oh = eh;
d1329ca3
AM		 4785 }
4786 }
e86ce104 4787 if (fh != NULL)
34814b9f 4788 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 4789 }
4790}
4791
411e1bfb 4792static bfd_boolean
4ce794b7
AM		 4793get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp,
4794 asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp,
4795 unsigned long r_symndx, bfd *ibfd)
411e1bfb
AM		 4796{
4797 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4798
4799 if (r_symndx >= symtab_hdr->sh_info)
4800 {
4801 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4802 struct elf_link_hash_entry *h;
4803
4804 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4805 while (h->root.type == bfd_link_hash_indirect
4806 || h->root.type == bfd_link_hash_warning)
4807 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4808
4809 if (hp != NULL)
4810 *hp = h;
4811
4812 if (symp != NULL)
4813 *symp = NULL;
4814
4815 if (symsecp != NULL)
4816 {
4817 asection *symsec = NULL;
4818 if (h->root.type == bfd_link_hash_defined
4819 || h->root.type == bfd_link_hash_defweak)
4820 symsec = h->root.u.def.section;
4821 *symsecp = symsec;
4822 }
4823
e7b938ca 4824 if (tls_maskp != NULL)
411e1bfb
AM		 4825 {
4826 struct ppc_link_hash_entry *eh;
4827
4828 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4829 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 4830 }
4831 }
4832 else
4833 {
4834 Elf_Internal_Sym *sym;
4835 Elf_Internal_Sym *locsyms = *locsymsp;
4836
4837 if (locsyms == NULL)
4838 {
4839 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4840 if (locsyms == NULL)
4841 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4842 symtab_hdr->sh_info,
4843 0, NULL, NULL, NULL);
4844 if (locsyms == NULL)
4845 return FALSE;
4846 *locsymsp = locsyms;
4847 }
4848 sym = locsyms + r_symndx;
4849
4850 if (hp != NULL)
4851 *hp = NULL;
4852
4853 if (symp != NULL)
4854 *symp = sym;
4855
4856 if (symsecp != NULL)
4857 {
4858 asection *symsec = NULL;
4859 if ((sym->st_shndx != SHN_UNDEF
4860 && sym->st_shndx < SHN_LORESERVE)
4861 || sym->st_shndx > SHN_HIRESERVE)
4862 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4863 *symsecp = symsec;
4864 }
4865
e7b938ca 4866 if (tls_maskp != NULL)
411e1bfb
AM		 4867 {
4868 struct got_entry **lgot_ents;
e7b938ca 4869 char *tls_mask;
411e1bfb 4870
e7b938ca 4871 tls_mask = NULL;
411e1bfb
AM		 4872 lgot_ents = elf_local_got_ents (ibfd);
4873 if (lgot_ents != NULL)
4874 {
e7b938ca
AM		 4875 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4876 tls_mask = &lgot_masks[r_symndx];
411e1bfb 4877 }
e7b938ca 4878 *tls_maskp = tls_mask;
411e1bfb
AM		 4879 }
4880 }
4881 return TRUE;
4882}
4883
e7b938ca 4884/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 4885 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 4886 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 4887
4888static int
0d4792f7
AM		 4889get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
4890 Elf_Internal_Sym **locsymsp,
4ce794b7 4891 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 4892{
4893 unsigned long r_symndx;
0d4792f7 4894 int next_r;
411e1bfb
AM		 4895 struct elf_link_hash_entry *h;
4896 Elf_Internal_Sym *sym;
4897 asection *sec;
4898 bfd_vma off;
4899
4900 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 4901 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 4902 return 0;
411e1bfb 4903
e7b938ca 4904 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 4905 || sec == NULL
4906 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 4907 return 1;
411e1bfb
AM		 4908
4909 /* Look inside a TOC section too. */
4910 if (h != NULL)
4911 {
4912 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4913 off = h->root.u.def.value;
4914 }
4915 else
4916 off = sym->st_value;
4917 off += rel->r_addend;
4918 BFD_ASSERT (off % 8 == 0);
4919 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 4920 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 4921 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 4922 return 0;
0d4792f7
AM		 4923 if (toc_symndx != NULL)
4924 *toc_symndx = r_symndx;
4925 if ((h == NULL
4926 || ((h->root.type == bfd_link_hash_defined
4927 || h->root.type == bfd_link_hash_defweak)
4928 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4929 && (next_r == -1 || next_r == -2))
4930 return 1 - next_r;
951fd09b 4931 return 1;
411e1bfb
AM		 4932}
4933
754021d0
AM		 4934/* Adjust all global syms defined in opd sections. In gcc generated
4935 code these will already have been done, but I suppose we have to
4936 cater for all sorts of hand written assembly. */
4937
4938static bfd_boolean
4939adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
4940{
4941 struct ppc_link_hash_entry *eh;
4942 asection *sym_sec;
4943 long *opd_adjust;
4944
4945 if (h->root.type == bfd_link_hash_indirect)
4946 return TRUE;
4947
4948 if (h->root.type == bfd_link_hash_warning)
4949 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4950
4951 if (h->root.type != bfd_link_hash_defined
4952 && h->root.type != bfd_link_hash_defweak)
4953 return TRUE;
4954
4955 eh = (struct ppc_link_hash_entry *) h;
4956 if (eh->adjust_done)
4957 return TRUE;
4958
4959 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 4960 opd_adjust = get_opd_info (sym_sec);
4961 if (opd_adjust != NULL)
754021d0 4962 {
4025353c
AM		 4963 long adjust = opd_adjust[eh->elf.root.u.def.value / 24];
4964 if (adjust == -1)
4965 {
4966 /* This entry has been deleted. */
4967 eh->elf.root.u.def.value = 0;
4968 eh->elf.root.u.def.section = &bfd_abs_section;
4969 }
4970 else
4971 eh->elf.root.u.def.value += adjust;
754021d0
AM		 4972 eh->adjust_done = 1;
4973 }
4974 return TRUE;
4975}
4976
4977/* Remove unused Official Procedure Descriptor entries. Currently we
4978 only remove those associated with functions in discarded link-once
4979 sections, or weakly defined functions that have been overridden. It
4980 would be possible to remove many more entries for statically linked
4981 applications. */
4982
b34976b6 4983bfd_boolean
4ce794b7 4984ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
1e2f5b6e
AM		 4985{
4986 bfd *ibfd;
754021d0 4987 bfd_boolean some_edited = FALSE;
1e2f5b6e 4988
411e1bfb 4989 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 4990 {
4991 asection *sec;
4992 Elf_Internal_Rela *relstart, *rel, *relend;
4993 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 4994 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 4995 struct elf_link_hash_entry **sym_hashes;
4996 bfd_vma offset;
d6fe2dc1 4997 bfd_size_type amt;
4025353c 4998 long *opd_adjust;
b34976b6 4999 bfd_boolean need_edit;
1e2f5b6e
AM		 5000
5001 sec = bfd_get_section_by_name (ibfd, ".opd");
5002 if (sec == NULL)
5003 continue;
5004
eea6121a 5005 amt = sec->size * sizeof (long) / 24;
4025353c
AM		 5006 opd_adjust = get_opd_info (sec);
5007 if (opd_adjust == NULL)
d6fe2dc1
AM		 5008 {
5009 /* Must be a ld -r link. ie. check_relocs hasn't been
5010 called. */
4025353c
AM		 5011 opd_adjust = bfd_zalloc (obfd, amt);
5012 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 5013 }
4025353c 5014 memset (opd_adjust, 0, amt);
1e2f5b6e
AM		 5015
5016 if (sec->output_section == bfd_abs_section_ptr)
5017 continue;
5018
5019 /* Look through the section relocs. */
5020 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5021 continue;
5022
6cdc0ccc 5023 local_syms = NULL;
1e2f5b6e
AM		 5024 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5025 sym_hashes = elf_sym_hashes (ibfd);
5026
5027 /* Read the relocations. */
4ce794b7 5028 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 5029 info->keep_memory);
1e2f5b6e 5030 if (relstart == NULL)
b34976b6 5031 return FALSE;
1e2f5b6e
AM		 5032
5033 /* First run through the relocs to check they are sane, and to
5034 determine whether we need to edit this opd section. */
b34976b6 5035 need_edit = FALSE;
1e2f5b6e
AM		 5036 offset = 0;
5037 relend = relstart + sec->reloc_count;
50bc7936 5038 for (rel = relstart; rel < relend; )
1e2f5b6e 5039 {
04c9666a 5040 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 5041 unsigned long r_symndx;
5042 asection *sym_sec;
5043 struct elf_link_hash_entry *h;
5044 Elf_Internal_Sym *sym;
5045
5046 /* .opd contains a regular array of 24 byte entries. We're
5047 only interested in the reloc pointing to a function entry
5048 point. */
50bc7936
AM		 5049 if (rel->r_offset != offset
5050 || rel + 1 >= relend
5051 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 5052 {
5053 /* If someone messes with .opd alignment then after a
5054 "ld -r" we might have padding in the middle of .opd.
5055 Also, there's nothing to prevent someone putting
5056 something silly in .opd with the assembler. No .opd
b34976b6 5057 optimization for them! */
1e2f5b6e
AM		 5058 (*_bfd_error_handler)
5059 (_("%s: .opd is not a regular array of opd entries"),
5060 bfd_archive_filename (ibfd));
b34976b6 5061 need_edit = FALSE;
1e2f5b6e
AM		 5062 break;
5063 }
5064
50bc7936
AM		 5065 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5066 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5067 {
5068 (*_bfd_error_handler)
5069 (_("%s: unexpected reloc type %u in .opd section"),
5070 bfd_archive_filename (ibfd), r_type);
5071 need_edit = FALSE;
5072 break;
5073 }
5074
1e2f5b6e 5075 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 5076 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5077 r_symndx, ibfd))
50bc7936 5078 goto error_ret;
1e2f5b6e
AM		 5079
5080 if (sym_sec == NULL || sym_sec->owner == NULL)
5081 {
411e1bfb
AM		 5082 const char *sym_name;
5083 if (h != NULL)
5084 sym_name = h->root.root.string;
5085 else
5086 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5087
1e2f5b6e
AM		 5088 (*_bfd_error_handler)
5089 (_("%s: undefined sym `%s' in .opd section"),
5090 bfd_archive_filename (ibfd),
411e1bfb 5091 sym_name);
b34976b6 5092 need_edit = FALSE;
1e2f5b6e
AM		 5093 break;
5094 }
5095
51020317
AM		 5096 /* opd entries are always for functions defined in the
5097 current input bfd. If the symbol isn't defined in the
5098 input bfd, then we won't be using the function in this
5099 bfd; It must be defined in a linkonce section in another
5100 bfd, or is weak. It's also possible that we are
5101 discarding the function due to a linker script /DISCARD/,
5102 which we test for via the output_section. */
5103 if (sym_sec->owner != ibfd
5104 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 5105 need_edit = TRUE;
1e2f5b6e
AM		 5106
5107 offset += 24;
50bc7936
AM		 5108 rel += 2;
5109 /* Allow for the possibility of a reloc on the third word. */
5110 if (rel < relend
5111 && rel->r_offset == offset - 8)
5112 rel += 1;
1e2f5b6e
AM		 5113 }
5114
5115 if (need_edit)
5116 {
5117 Elf_Internal_Rela *write_rel;
5118 bfd_byte *rptr, *wptr;
b34976b6 5119 bfd_boolean skip;
1e2f5b6e
AM		 5120
5121 /* This seems a waste of time as input .opd sections are all
5122 zeros as generated by gcc, but I suppose there's no reason
5123 this will always be so. We might start putting something in
5124 the third word of .opd entries. */
5125 if ((sec->flags & SEC_IN_MEMORY) == 0)
5126 {
eea6121a
AM		 5127 bfd_byte *loc;
5128 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 5129 {
eea6121a
AM		 5130 if (loc != NULL)
5131 free (loc);
50bc7936 5132 error_ret:
6cdc0ccc
AM		 5133 if (local_syms != NULL
5134 && symtab_hdr->contents != (unsigned char *) local_syms)
5135 free (local_syms);
6cdc0ccc
AM		 5136 if (elf_section_data (sec)->relocs != relstart)
5137 free (relstart);
b34976b6 5138 return FALSE;
6cdc0ccc 5139 }
1e2f5b6e
AM		 5140 sec->contents = loc;
5141 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
5142 }
5143
5144 elf_section_data (sec)->relocs = relstart;
5145
5146 wptr = sec->contents;
5147 rptr = sec->contents;
5148 write_rel = relstart;
b34976b6 5149 skip = FALSE;
1e2f5b6e
AM		 5150 offset = 0;
5151 for (rel = relstart; rel < relend; rel++)
5152 {
50bc7936
AM		 5153 unsigned long r_symndx;
5154 asection *sym_sec;
5155 struct elf_link_hash_entry *h;
5156 Elf_Internal_Sym *sym;
5157
5158 r_symndx = ELF64_R_SYM (rel->r_info);
5159 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 5160 r_symndx, ibfd))
50bc7936
AM		 5161 goto error_ret;
5162
1e2f5b6e
AM		 5163 if (rel->r_offset == offset)
5164 {
50bc7936 5165 struct ppc_link_hash_entry *fdh = NULL;
4025353c
AM		 5166 if (h != NULL
5167 && h->root.root.string[0] == '.')
50bc7936
AM		 5168 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
5169 ppc_hash_table (info));
1e2f5b6e 5170
51020317
AM		 5171 skip = (sym_sec->owner != ibfd
5172 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 5173 if (skip)
5174 {
4025353c 5175 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 5176 {
5177 /* Arrange for the function descriptor sym
5178 to be dropped. */
d6fe2dc1
AM		 5179 fdh->elf.root.u.def.value = 0;
5180 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 5181 }
4025353c 5182 opd_adjust[rel->r_offset / 24] = -1;
a4aa0fb7
AM		 5183 }
5184 else
1e2f5b6e
AM		 5185 {
5186 /* We'll be keeping this opd entry. */
5187
4025353c 5188 if (fdh != NULL)
1e2f5b6e 5189 {
754021d0
AM		 5190 /* Redefine the function descriptor symbol to
5191 this location in the opd section. It is
5192 necessary to update the value here rather
5193 than using an array of adjustments as we do
5194 for local symbols, because various places
5195 in the generic ELF code use the value
5196 stored in u.def.value. */
d6fe2dc1 5197 fdh->elf.root.u.def.value = wptr - sec->contents;
754021d0 5198 fdh->adjust_done = 1;
1e2f5b6e 5199 }
754021d0
AM		 5200
5201 /* Local syms are a bit tricky. We could
5202 tweak them as they can be cached, but
5203 we'd need to look through the local syms
5204 for the function descriptor sym which we
5205 don't have at the moment. So keep an
5206 array of adjustments. */
4025353c 5207 opd_adjust[rel->r_offset / 24] = wptr - rptr;
1e2f5b6e
AM		 5208
5209 if (wptr != rptr)
5210 memcpy (wptr, rptr, 24);
5211 wptr += 24;
5212 }
5213 rptr += 24;
5214 offset += 24;
5215 }
5216
50bc7936
AM		 5217 if (skip)
5218 {
5219 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
5220 if (info->shared)
5221 {
5222 /* We won't be needing dynamic relocs here. */
5223 struct ppc_dyn_relocs **pp;
5224 struct ppc_dyn_relocs *p;
5225
5226 if (h != NULL)
5227 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5228 else if (sym_sec != NULL)
5229 pp = ((struct ppc_dyn_relocs **)
5230 &elf_section_data (sym_sec)->local_dynrel);
5231 else
5232 pp = ((struct ppc_dyn_relocs **)
5233 &elf_section_data (sec)->local_dynrel);
5234 while ((p = *pp) != NULL)
5235 {
5236 if (p->sec == sec)
5237 {
5238 p->count -= 1;
5239 if (p->count == 0)
d37c89e5 5240 *pp = p->next;
50bc7936
AM		 5241 break;
5242 }
5243 pp = &p->next;
5244 }
5245 }
5246 }
5247 else
1e2f5b6e 5248 {
50bc7936
AM		 5249 /* We need to adjust any reloc offsets to point to the
5250 new opd entries. While we're at it, we may as well
5251 remove redundant relocs. */
1e2f5b6e
AM		 5252 rel->r_offset += wptr - rptr;
5253 if (write_rel != rel)
5254 memcpy (write_rel, rel, sizeof (*rel));
5255 ++write_rel;
5256 }
5257 }
5258
eea6121a 5259 sec->size = wptr - sec->contents;
1e2f5b6e 5260 sec->reloc_count = write_rel - relstart;
cdcf6e38
AM		 5261 /* Fudge the size too, as this is used later in
5262 elf_bfd_final_link if we are emitting relocs. */
5263 elf_section_data (sec)->rel_hdr.sh_size
5264 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5265 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 5266 some_edited = TRUE;
1e2f5b6e 5267 }
6cdc0ccc 5268 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 5269 free (relstart);
6cdc0ccc 5270
411e1bfb
AM		 5271 if (local_syms != NULL
5272 && symtab_hdr->contents != (unsigned char *) local_syms)
5273 {
5274 if (!info->keep_memory)
5275 free (local_syms);
5276 else
5277 symtab_hdr->contents = (unsigned char *) local_syms;
5278 }
5279 }
5280
754021d0
AM		 5281 if (some_edited)
5282 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
5283
411e1bfb
AM		 5284 return TRUE;
5285}
5286
e1918d23 5287/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 5288
e1918d23 5289asection *
4ce794b7 5290ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 5291{
411e1bfb
AM		 5292 struct ppc_link_hash_table *htab;
5293
411e1bfb 5294 htab = ppc_hash_table (info);
a48ebf4d
AM		 5295 if (htab->tls_get_addr != NULL)
5296 {
5297 struct elf_link_hash_entry *h = htab->tls_get_addr;
5298
5299 while (h->root.type == bfd_link_hash_indirect
5300 || h->root.type == bfd_link_hash_warning)
5301 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5302
5303 htab->tls_get_addr = h;
5304 }
5305
e1918d23 5306 return _bfd_elf_tls_setup (obfd, info);
951fd09b 5307}
411e1bfb 5308
951fd09b
AM		 5309/* Run through all the TLS relocs looking for optimization
5310 opportunities. The linker has been hacked (see ppc64elf.em) to do
5311 a preliminary section layout so that we know the TLS segment
5312 offsets. We can't optimize earlier because some optimizations need
5313 to know the tp offset, and we need to optimize before allocating
5314 dynamic relocations. */
5315
5316bfd_boolean
4ce794b7 5317ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 5318{
5319 bfd *ibfd;
5320 asection *sec;
5321 struct ppc_link_hash_table *htab;
5322
1049f94e 5323 if (info->relocatable || info->shared)
411e1bfb
AM		 5324 return TRUE;
5325
951fd09b 5326 htab = ppc_hash_table (info);
411e1bfb
AM		 5327 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5328 {
5329 Elf_Internal_Sym *locsyms = NULL;
5330
5331 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5332 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5333 {
5334 Elf_Internal_Rela *relstart, *rel, *relend;
5335 int expecting_tls_get_addr;
5336
5337 /* Read the relocations. */
4ce794b7 5338 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 5339 info->keep_memory);
411e1bfb
AM		 5340 if (relstart == NULL)
5341 return FALSE;
5342
5343 expecting_tls_get_addr = 0;
5344 relend = relstart + sec->reloc_count;
5345 for (rel = relstart; rel < relend; rel++)
5346 {
5347 enum elf_ppc64_reloc_type r_type;
5348 unsigned long r_symndx;
5349 struct elf_link_hash_entry *h;
5350 Elf_Internal_Sym *sym;
5351 asection *sym_sec;
e7b938ca
AM		 5352 char *tls_mask;
5353 char tls_set, tls_clear, tls_type = 0;
411e1bfb 5354 bfd_vma value;
951fd09b 5355 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 5356
5357 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5358 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 5359 r_symndx, ibfd))
5360 {
5361 err_free_rel:
5362 if (elf_section_data (sec)->relocs != relstart)
5363 free (relstart);
5364 if (locsyms != NULL
5365 && (elf_tdata (ibfd)->symtab_hdr.contents
5366 != (unsigned char *) locsyms))
5367 free (locsyms);
5368 return FALSE;
5369 }
5370
5371 if (h != NULL)
5372 {
5373 if (h->root.type != bfd_link_hash_defined
5374 && h->root.type != bfd_link_hash_defweak)
5375 continue;
5376 value = h->root.u.def.value;
5377 }
5378 else
4025353c
AM		 5379 /* Symbols referenced by TLS relocs must be of type
5380 STT_TLS. So no need for .opd local sym adjust. */
5381 value = sym->st_value;
951fd09b 5382
411e1bfb 5383 ok_tprel = FALSE;
951fd09b
AM		 5384 is_local = FALSE;
5385 if (h == NULL
5386 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
411e1bfb 5387 {
951fd09b 5388 is_local = TRUE;
411e1bfb
AM		 5389 value += sym_sec->output_offset;
5390 value += sym_sec->output_section->vma;
e1918d23 5391 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 5392 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5393 < (bfd_vma) 1 << 32);
5394 }
5395
4ce794b7 5396 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 5397 switch (r_type)
5398 {
5399 case R_PPC64_GOT_TLSLD16:
5400 case R_PPC64_GOT_TLSLD16_LO:
5401 case R_PPC64_GOT_TLSLD16_HI:
5402 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 5403 /* These relocs should never be against a symbol
5404 defined in a shared lib. Leave them alone if
5405 that turns out to be the case. */
e717da7e 5406 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 5407 if (!is_local)
5408 continue;
5409
951fd09b
AM		 5410 /* LD -> LE */
5411 tls_set = 0;
5412 tls_clear = TLS_LD;
e7b938ca 5413 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5414 expecting_tls_get_addr = 1;
5415 break;
5416
5417 case R_PPC64_GOT_TLSGD16:
5418 case R_PPC64_GOT_TLSGD16_LO:
5419 case R_PPC64_GOT_TLSGD16_HI:
5420 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5421 if (ok_tprel)
411e1bfb
AM		 5422 /* GD -> LE */
5423 tls_set = 0;
5424 else
5425 /* GD -> IE */
951fd09b
AM		 5426 tls_set = TLS_TLS | TLS_TPRELGD;
5427 tls_clear = TLS_GD;
e7b938ca 5428 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5429 expecting_tls_get_addr = 1;
5430 break;
5431
5432 case R_PPC64_GOT_TPREL16_DS:
5433 case R_PPC64_GOT_TPREL16_LO_DS:
5434 case R_PPC64_GOT_TPREL16_HI:
5435 case R_PPC64_GOT_TPREL16_HA:
5436 expecting_tls_get_addr = 0;
5437 if (ok_tprel)
5438 {
5439 /* IE -> LE */
5440 tls_set = 0;
5441 tls_clear = TLS_TPREL;
e7b938ca 5442 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 5443 break;
5444 }
5445 else
5446 continue;
5447
5448 case R_PPC64_REL14:
5449 case R_PPC64_REL14_BRTAKEN:
5450 case R_PPC64_REL14_BRNTAKEN:
5451 case R_PPC64_REL24:
5452 if (h != NULL
5453 && h == htab->tls_get_addr)
5454 {
5455 if (!expecting_tls_get_addr
5456 && rel != relstart
5457 && ((ELF64_R_TYPE (rel[-1].r_info)
5458 == R_PPC64_TOC16)
5459 || (ELF64_R_TYPE (rel[-1].r_info)
5460 == R_PPC64_TOC16_LO)))
5461 {
5462 /* Check for toc tls entries. */
5463 char *toc_tls;
951fd09b 5464 int retval;
411e1bfb 5465
0d4792f7 5466 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 5467 rel - 1, ibfd);
5468 if (retval == 0)
411e1bfb
AM		 5469 goto err_free_rel;
5470 if (toc_tls != NULL)
951fd09b 5471 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 5472 }
5473
5474 if (expecting_tls_get_addr)
5475 {
5476 struct plt_entry *ent;
5477 for (ent = h->plt.plist; ent; ent = ent->next)
5478 if (ent->addend == 0)
5479 {
5480 if (ent->plt.refcount > 0)
5481 ent->plt.refcount -= 1;
5482 break;
5483 }
5484 }
5485 }
5486 expecting_tls_get_addr = 0;
5487 continue;
5488
5489 case R_PPC64_TPREL64:
5490 expecting_tls_get_addr = 0;
5491 if (ok_tprel)
5492 {
5493 /* IE -> LE */
5494 tls_set = TLS_EXPLICIT;
5495 tls_clear = TLS_TPREL;
5496 break;
5497 }
5498 else
5499 continue;
5500
5501 case R_PPC64_DTPMOD64:
5502 expecting_tls_get_addr = 0;
951fd09b
AM		 5503 if (rel + 1 < relend
5504 && (rel[1].r_info
5505 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5506 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 5507 {
951fd09b 5508 if (ok_tprel)
411e1bfb 5509 /* GD -> LE */
951fd09b 5510 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 5511 else
5512 /* GD -> IE */
951fd09b
AM		 5513 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5514 tls_clear = TLS_GD;
411e1bfb
AM		 5515 }
5516 else
5517 {
951fd09b
AM		 5518 if (!is_local)
5519 continue;
5520
5521 /* LD -> LE */
5522 tls_set = TLS_EXPLICIT;
5523 tls_clear = TLS_LD;
411e1bfb
AM		 5524 }
5525 break;
5526
5527 default:
5528 expecting_tls_get_addr = 0;
5529 continue;
5530 }
5531
5532 if ((tls_set & TLS_EXPLICIT) == 0)
5533 {
5534 struct got_entry *ent;
5535
5536 /* Adjust got entry for this reloc. */
5537 if (h != NULL)
5538 ent = h->got.glist;
5539 else
5540 ent = elf_local_got_ents (ibfd)[r_symndx];
5541
5542 for (; ent != NULL; ent = ent->next)
5543 if (ent->addend == rel->r_addend
e717da7e 5544 && ent->owner == ibfd
e7b938ca 5545 && ent->tls_type == tls_type)
411e1bfb
AM		 5546 break;
5547 if (ent == NULL)
5548 abort ();
5549
5550 if (tls_set == 0)
5551 {
5552 /* We managed to get rid of a got entry. */
5553 if (ent->got.refcount > 0)
5554 ent->got.refcount -= 1;
5555 }
411e1bfb
AM		 5556 }
5557 else if (h != NULL)
5558 {
5559 struct ppc_link_hash_entry * eh;
5560 struct ppc_dyn_relocs **pp;
5561 struct ppc_dyn_relocs *p;
5562
5563 /* Adjust dynamic relocs. */
5564 eh = (struct ppc_link_hash_entry *) h;
5565 for (pp = &eh->dyn_relocs;
5566 (p = *pp) != NULL;
5567 pp = &p->next)
5568 if (p->sec == sec)
5569 {
5570 /* If we got rid of a DTPMOD/DTPREL reloc
5571 pair then we'll lose one or two dyn
5572 relocs. */
951fd09b 5573 if (tls_set == (TLS_EXPLICIT | TLS_GD))
411e1bfb 5574 p->count -= 1;
951fd09b 5575 p->count -= 1;
411e1bfb
AM		 5576 if (p->count == 0)
5577 *pp = p->next;
5578 break;
5579 }
5580 }
5581
e7b938ca
AM		 5582 *tls_mask |= tls_set;
5583 *tls_mask &= ~tls_clear;
411e1bfb
AM		 5584 }
5585
5586 if (elf_section_data (sec)->relocs != relstart)
5587 free (relstart);
5588 }
5589
5590 if (locsyms != NULL
5591 && (elf_tdata (ibfd)->symtab_hdr.contents
5592 != (unsigned char *) locsyms))
6cdc0ccc
AM		 5593 {
5594 if (!info->keep_memory)
411e1bfb 5595 free (locsyms);
6cdc0ccc 5596 else
411e1bfb 5597 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 5598 }
1e2f5b6e 5599 }
b34976b6 5600 return TRUE;
1e2f5b6e 5601}
b34976b6 5602
65f38f15
AM		 5603/* Allocate space in .plt, .got and associated reloc sections for
5604 dynamic relocs. */
5bd4f169 5605
b34976b6 5606static bfd_boolean
4ce794b7 5607allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5608{
65f38f15
AM		 5609 struct bfd_link_info *info;
5610 struct ppc_link_hash_table *htab;
5bd4f169 5611 asection *s;
65f38f15
AM		 5612 struct ppc_link_hash_entry *eh;
5613 struct ppc_dyn_relocs *p;
411e1bfb 5614 struct got_entry *gent;
5bd4f169 5615
e92d460e 5616 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5617 return TRUE;
5bd4f169 5618
e92d460e
AM		 5619 if (h->root.type == bfd_link_hash_warning)
5620 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5621
65f38f15
AM		 5622 info = (struct bfd_link_info *) inf;
5623 htab = ppc_hash_table (info);
5bd4f169 5624
65f38f15 5625 if (htab->elf.dynamic_sections_created
411e1bfb 5626 && h->dynindx != -1
9c7a29a3 5627 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 5628 {
411e1bfb
AM		 5629 struct plt_entry *pent;
5630 bfd_boolean doneone = FALSE;
5631 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5632 if (pent->plt.refcount > 0)
5633 {
5634 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5635
5636 /* If this is the first .plt entry, make room for the special
5637 first entry. */
4ce794b7 5638 s = htab->plt;
eea6121a
AM		 5639 if (s->size == 0)
5640 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 5641
eea6121a 5642 pent->plt.offset = s->size;
411e1bfb
AM		 5643
5644 /* Make room for this entry. */
eea6121a 5645 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 5646
5647 /* Make room for the .glink code. */
4ce794b7 5648 s = htab->glink;
eea6121a
AM		 5649 if (s->size == 0)
5650 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 5651 /* We need bigger stubs past index 32767. */
eea6121a
AM		 5652 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5653 s->size += 4;
5654 s->size += 2*4;
411e1bfb
AM		 5655
5656 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 5657 s = htab->relplt;
eea6121a 5658 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 5659 doneone = TRUE;
5660 }
5661 else
5662 pent->plt.offset = (bfd_vma) -1;
5663 if (!doneone)
65f38f15 5664 {
411e1bfb 5665 h->plt.plist = NULL;
65f38f15
AM		 5666 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5667 }
5668 }
5669 else
5670 {
411e1bfb 5671 h->plt.plist = NULL;
65f38f15
AM		 5672 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5673 }
5674
951fd09b
AM		 5675 eh = (struct ppc_link_hash_entry *) h;
5676 /* Run through the TLS GD got entries first if we're changing them
5677 to TPREL. */
e7b938ca 5678 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 5679 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5680 if (gent->got.refcount > 0
5681 && (gent->tls_type & TLS_GD) != 0)
5682 {
5683 /* This was a GD entry that has been converted to TPREL. If
5684 there happens to be a TPREL entry we can use that one. */
5685 struct got_entry *ent;
5686 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5687 if (ent->got.refcount > 0
5688 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 5689 && ent->addend == gent->addend
5690 && ent->owner == gent->owner)
951fd09b
AM		 5691 {
5692 gent->got.refcount = 0;
5693 break;
5694 }
5695
5696 /* If not, then we'll be using our own TPREL entry. */
5697 if (gent->got.refcount != 0)
5698 gent->tls_type = TLS_TLS | TLS_TPREL;
5699 }
5700
411e1bfb
AM		 5701 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5702 if (gent->got.refcount > 0)
5703 {
951fd09b
AM		 5704 bfd_boolean dyn;
5705
411e1bfb 5706 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 5707 Undefined weak syms won't yet be marked as dynamic,
5708 nor will all TLS symbols. */
411e1bfb
AM		 5709 if (h->dynindx == -1
5710 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5711 {
c152c796 5712 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 5713 return FALSE;
5714 }
65f38f15 5715
d881513a
AM		 5716 if ((gent->tls_type & TLS_LD) != 0
5717 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
411e1bfb 5718 {
e717da7e 5719 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 5720 continue;
411e1bfb 5721 }
951fd09b 5722
e717da7e 5723 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 5724 gent->got.offset = s->size;
5725 s->size
d881513a 5726 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 5727 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 5728 if ((info->shared
5729 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5730 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5731 || h->root.type != bfd_link_hash_undefweak))
eea6121a 5732 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 5733 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 5734 ? 2 * sizeof (Elf64_External_Rela)
5735 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 5736 }
5737 else
5738 gent->got.offset = (bfd_vma) -1;
65f38f15 5739
65f38f15 5740 if (eh->dyn_relocs == NULL)
b34976b6 5741 return TRUE;
65f38f15
AM		 5742
5743 /* In the shared -Bsymbolic case, discard space allocated for
5744 dynamic pc-relative relocs against symbols which turn out to be
5745 defined in regular objects. For the normal shared case, discard
5746 space for relocs that have become local due to symbol visibility
5747 changes. */
5748
5749 if (info->shared)
5750 {
9c7a29a3
AM		 5751 /* Relocs that use pc_count are those that appear on a call insn,
5752 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5753 generated via assembly. We want calls to protected symbols to
5754 resolve directly to the function rather than going via the plt.
5755 If people want function pointer comparisons to work as expected
5756 then they should avoid writing weird assembly. */
09695f56 5757 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 5758 {
5759 struct ppc_dyn_relocs **pp;
5760
5761 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 5762 {
65f38f15
AM		 5763 p->count -= p->pc_count;
5764 p->pc_count = 0;
5765 if (p->count == 0)
5766 *pp = p->next;
5767 else
5768 pp = &p->next;
5bd4f169 5769 }
65f38f15 5770 }
4e795f50
AM		 5771
5772 /* Also discard relocs on undefined weak syms with non-default
5773 visibility. */
5774 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5775 && h->root.type == bfd_link_hash_undefweak)
5776 eh->dyn_relocs = NULL;
65f38f15 5777 }
f4656909 5778 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 5779 {
5780 /* For the non-shared case, discard space for relocs against
5781 symbols which turn out to need copy relocs or are not
5782 dynamic. */
5783
5784 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
58ac9f71
AM		 5785 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5786 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
65f38f15
AM		 5787 {
5788 /* Make sure this symbol is output as a dynamic symbol.
5789 Undefined weak syms won't yet be marked as dynamic. */
5790 if (h->dynindx == -1
5791 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5792 {
c152c796 5793 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 5794 return FALSE;
65f38f15
AM		 5795 }
5796
5797 /* If that succeeded, we know we'll be keeping all the
5798 relocs. */
5799 if (h->dynindx != -1)
5800 goto keep;
5801 }
5802
5803 eh->dyn_relocs = NULL;
5804
ec338859 5805 keep: ;
65f38f15
AM		 5806 }
5807
5808 /* Finally, allocate space. */
5809 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5810 {
5811 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 5812 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 5813 }
5814
b34976b6 5815 return TRUE;
65f38f15
AM		 5816}
5817
5818/* Find any dynamic relocs that apply to read-only sections. */
5819
b34976b6 5820static bfd_boolean
4ce794b7 5821readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 5822{
5823 struct ppc_link_hash_entry *eh;
5824 struct ppc_dyn_relocs *p;
5825
e92d460e
AM		 5826 if (h->root.type == bfd_link_hash_warning)
5827 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5828
65f38f15
AM		 5829 eh = (struct ppc_link_hash_entry *) h;
5830 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5831 {
5832 asection *s = p->sec->output_section;
5833
5834 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5835 {
4ce794b7 5836 struct bfd_link_info *info = inf;
65f38f15
AM		 5837
5838 info->flags |= DF_TEXTREL;
5839
5840 /* Not an error, just cut short the traversal. */
b34976b6 5841 return FALSE;
65f38f15
AM		 5842 }
5843 }
b34976b6 5844 return TRUE;
65f38f15
AM		 5845}
5846
5847/* Set the sizes of the dynamic sections. */
5848
b34976b6 5849static bfd_boolean
4ce794b7
AM		 5850ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5851 struct bfd_link_info *info)
65f38f15
AM		 5852{
5853 struct ppc_link_hash_table *htab;
5854 bfd *dynobj;
5855 asection *s;
b34976b6 5856 bfd_boolean relocs;
65f38f15
AM		 5857 bfd *ibfd;
5858
5859 htab = ppc_hash_table (info);
5860 dynobj = htab->elf.dynobj;
5861 if (dynobj == NULL)
5862 abort ();
5863
5864 if (htab->elf.dynamic_sections_created)
5865 {
5866 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 5867 if (info->executable)
65f38f15
AM		 5868 {
5869 s = bfd_get_section_by_name (dynobj, ".interp");
5870 if (s == NULL)
5871 abort ();
eea6121a 5872 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 5873 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5874 }
5875 }
5876
5877 /* Set up .got offsets for local syms, and space for local dynamic
5878 relocs. */
5879 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5880 {
411e1bfb
AM		 5881 struct got_entry **lgot_ents;
5882 struct got_entry **end_lgot_ents;
e7b938ca 5883 char *lgot_masks;
65f38f15
AM		 5884 bfd_size_type locsymcount;
5885 Elf_Internal_Shdr *symtab_hdr;
5886 asection *srel;
5887
5888 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5889 continue;
5890
e717da7e
AM		 5891 if (ppc64_tlsld_got (ibfd)->refcount > 0)
5892 {
5893 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 5894 ppc64_tlsld_got (ibfd)->offset = s->size;
5895 s->size += 16;
e717da7e
AM		 5896 if (info->shared)
5897 {
5898 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 5899 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 5900 }
5901 }
5902 else
5903 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
5904
65f38f15
AM		 5905 for (s = ibfd->sections; s != NULL; s = s->next)
5906 {
ec338859 5907 struct ppc_dyn_relocs *p;
65f38f15 5908
ec338859
AM		 5909 for (p = *((struct ppc_dyn_relocs **)
5910 &elf_section_data (s)->local_dynrel);
5911 p != NULL;
5912 p = p->next)
65f38f15 5913 {
ec338859
AM		 5914 if (!bfd_is_abs_section (p->sec)
5915 && bfd_is_abs_section (p->sec->output_section))
5916 {
5917 /* Input section has been discarded, either because
5918 it is a copy of a linkonce section or due to
5919 linker script /DISCARD/, so we'll be discarding
5920 the relocs too. */
5921 }
248866a8 5922 else if (p->count != 0)
ec338859
AM		 5923 {
5924 srel = elf_section_data (p->sec)->sreloc;
eea6121a 5925 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 5926 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5927 info->flags |= DF_TEXTREL;
ec338859 5928 }
65f38f15
AM		 5929 }
5930 }
5931
411e1bfb
AM		 5932 lgot_ents = elf_local_got_ents (ibfd);
5933 if (!lgot_ents)
65f38f15
AM		 5934 continue;
5935
5936 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5937 locsymcount = symtab_hdr->sh_info;
411e1bfb 5938 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 5939 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 5940 s = ppc64_elf_tdata (ibfd)->got;
5941 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 5942 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 5943 {
411e1bfb
AM		 5944 struct got_entry *ent;
5945
5946 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5947 if (ent->got.refcount > 0)
5948 {
e7b938ca 5949 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 5950 {
e717da7e 5951 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 5952 {
eea6121a
AM		 5953 ppc64_tlsld_got (ibfd)->offset = s->size;
5954 s->size += 16;
411e1bfb 5955 if (info->shared)
eea6121a 5956 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 5957 }
e717da7e 5958 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 5959 }
5960 else
5961 {
eea6121a 5962 ent->got.offset = s->size;
e7b938ca 5963 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 5964 {
eea6121a 5965 s->size += 16;
411e1bfb 5966 if (info->shared)
eea6121a 5967 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 5968 }
5969 else
5970 {
eea6121a 5971 s->size += 8;
411e1bfb 5972 if (info->shared)
eea6121a 5973 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 5974 }
5975 }
5976 }
5977 else
5978 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 5979 }
5980 }
5981
5982 /* Allocate global sym .plt and .got entries, and space for global
5983 sym dynamic relocs. */
4ce794b7 5984 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 5985
5986 /* We now have determined the sizes of the various dynamic sections.
5987 Allocate memory for them. */
b34976b6 5988 relocs = FALSE;
65f38f15
AM		 5989 for (s = dynobj->sections; s != NULL; s = s->next)
5990 {
5991 if ((s->flags & SEC_LINKER_CREATED) == 0)
5992 continue;
5993
4ce794b7 5994 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 5995 /* These haven't been allocated yet; don't strip. */
5996 continue;
e717da7e
AM		 5997 else if (s == htab->got
5998 || s == htab->plt
4ce794b7 5999 || s == htab->glink)
65f38f15
AM		 6000 {
6001 /* Strip this section if we don't need it; see the
6002 comment below. */
5bd4f169 6003 }
65f38f15 6004 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 6005 {
eea6121a 6006 if (s->size == 0)
5bd4f169
AM		 6007 {
6008 /* If we don't need this section, strip it from the
6009 output file. This is mostly to handle .rela.bss and
6010 .rela.plt. We must create both sections in
6011 create_dynamic_sections, because they must be created
6012 before the linker maps input sections to output
6013 sections. The linker does that before
6014 adjust_dynamic_symbol is called, and it is that
6015 function which decides whether anything needs to go
6016 into these sections. */
5bd4f169
AM		 6017 }
6018 else
6019 {
4ce794b7 6020 if (s != htab->relplt)
b34976b6 6021 relocs = TRUE;
5bd4f169
AM		 6022
6023 /* We use the reloc_count field as a counter if we need
6024 to copy relocs into the output file. */
6025 s->reloc_count = 0;
6026 }
6027 }
65f38f15 6028 else
5bd4f169
AM		 6029 {
6030 /* It's not one of our sections, so don't allocate space. */
6031 continue;
6032 }
6033
eea6121a 6034 if (s->size == 0)
5bd4f169
AM		 6035 {
6036 _bfd_strip_section_from_output (info, s);
6037 continue;
6038 }
6039
5f333394 6040 /* .plt is in the bss section. We don't initialise it. */
680a3378 6041 if (s == htab->plt)
5f333394
AM		 6042 continue;
6043
65f38f15
AM		 6044 /* Allocate memory for the section contents. We use bfd_zalloc
6045 here in case unused entries are not reclaimed before the
6046 section's contents are written out. This should not happen,
411e1bfb
AM		 6047 but this way if it does we get a R_PPC64_NONE reloc in .rela
6048 sections instead of garbage.
6049 We also rely on the section contents being zero when writing
6050 the GOT. */
eea6121a 6051 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 6052 if (s->contents == NULL)
b34976b6 6053 return FALSE;
5bd4f169
AM		 6054 }
6055
e717da7e
AM		 6056 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6057 {
6058 s = ppc64_elf_tdata (ibfd)->got;
6059 if (s != NULL && s != htab->got)
6060 {
eea6121a 6061 if (s->size == 0)
e717da7e
AM		 6062 _bfd_strip_section_from_output (info, s);
6063 else
6064 {
eea6121a 6065 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 6066 if (s->contents == NULL)
6067 return FALSE;
6068 }
6069 }
6070 s = ppc64_elf_tdata (ibfd)->relgot;
6071 if (s != NULL)
6072 {
eea6121a 6073 if (s->size == 0)
e717da7e
AM		 6074 _bfd_strip_section_from_output (info, s);
6075 else
6076 {
eea6121a 6077 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 6078 if (s->contents == NULL)
6079 return FALSE;
6080 relocs = TRUE;
6081 s->reloc_count = 0;
6082 }
6083 }
6084 }
6085
e86ce104 6086 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 6087 {
6088 /* Add some entries to the .dynamic section. We fill in the
6089 values later, in ppc64_elf_finish_dynamic_sections, but we
6090 must add the entries now so that we get the correct size for
6091 the .dynamic section. The DT_DEBUG entry is filled in by the
6092 dynamic linker and used by the debugger. */
dc810e39 6093#define add_dynamic_entry(TAG, VAL) \
5a580b3a 6094 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 6095
36af4a4e 6096 if (info->executable)
5bd4f169 6097 {
dc810e39 6098 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 6099 return FALSE;
5bd4f169
AM		 6100 }
6101
eea6121a 6102 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 6103 {
dc810e39
AM		 6104 if (!add_dynamic_entry (DT_PLTGOT, 0)
6105 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6106 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 6107 || !add_dynamic_entry (DT_JMPREL, 0)
6108 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 6109 return FALSE;
5bd4f169
AM		 6110 }
6111
19397422
AM		 6112 if (NO_OPD_RELOCS)
6113 {
6114 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
6115 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 6116 return FALSE;
19397422
AM		 6117 }
6118
5bd4f169
AM		 6119 if (relocs)
6120 {
dc810e39
AM		 6121 if (!add_dynamic_entry (DT_RELA, 0)
6122 || !add_dynamic_entry (DT_RELASZ, 0)
6123 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 6124 return FALSE;
5bd4f169 6125
65f38f15
AM		 6126 /* If any dynamic relocs apply to a read-only section,
6127 then we need a DT_TEXTREL entry. */
248866a8 6128 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 6129 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 6130
65f38f15 6131 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 6132 {
65f38f15 6133 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 6134 return FALSE;
5bd4f169 6135 }
5bd4f169 6136 }
5bd4f169 6137 }
65f38f15 6138#undef add_dynamic_entry
5bd4f169 6139
b34976b6 6140 return TRUE;
5bd4f169
AM		 6141}
6142
721956f4 6143/* Determine the type of stub needed, if any, for a call. */
5bd4f169 6144
4ce794b7
AM		 6145static inline enum ppc_stub_type
6146ppc_type_of_stub (asection *input_sec,
6147 const Elf_Internal_Rela *rel,
6148 struct ppc_link_hash_entry **hash,
6149 bfd_vma destination)
5bd4f169 6150{
721956f4
AM		 6151 struct ppc_link_hash_entry *h = *hash;
6152 bfd_vma location;
6153 bfd_vma branch_offset;
6154 bfd_vma max_branch_offset;
4ce794b7 6155 enum elf_ppc64_reloc_type r_type;
5bd4f169 6156
721956f4
AM		 6157 if (h != NULL)
6158 {
6159 if (h->oh != NULL
34814b9f 6160 && h->oh->elf.dynindx != -1)
5bd4f169 6161 {
411e1bfb 6162 struct plt_entry *ent;
34814b9f 6163 for (ent = h->oh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6164 if (ent->addend == rel->r_addend
6165 && ent->plt.offset != (bfd_vma) -1)
6166 {
34814b9f 6167 *hash = h->oh;
411e1bfb
AM		 6168 return ppc_stub_plt_call;
6169 }
5bd4f169
AM		 6170 }
6171
ee7de3e6
AM		 6172 if (!(h->elf.root.type == bfd_link_hash_defined
6173 || h->elf.root.type == bfd_link_hash_defweak)
6174 || h->elf.root.u.def.section->output_section == NULL)
721956f4 6175 return ppc_stub_none;
5d1634d7 6176 }
5d1634d7 6177
721956f4
AM		 6178 /* Determine where the call point is. */
6179 location = (input_sec->output_offset
6180 + input_sec->output_section->vma
6181 + rel->r_offset);
5d1634d7 6182
721956f4
AM		 6183 branch_offset = destination - location;
6184 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 6185
721956f4
AM		 6186 /* Determine if a long branch stub is needed. */
6187 max_branch_offset = 1 << 25;
4ce794b7 6188 if (r_type != R_PPC64_REL24)
721956f4 6189 max_branch_offset = 1 << 15;
5d1634d7 6190
721956f4
AM		 6191 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6192 /* We need a stub. Figure out whether a long_branch or plt_branch
6193 is needed later. */
6194 return ppc_stub_long_branch;
5d1634d7 6195
721956f4 6196 return ppc_stub_none;
5d1634d7
AM		 6197}
6198
6199/* Build a .plt call stub. */
6200
4ce794b7
AM		 6201static inline bfd_byte *
6202build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 6203{
6204#define PPC_LO(v) ((v) & 0xffff)
6205#define PPC_HI(v) (((v) >> 16) & 0xffff)
6206#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6207
5d1634d7 6208 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 6209 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 6210 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6211 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 6212 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 6213 offset += 8;
6214 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6215 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 6216 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 6217 offset += 8;
6218 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6219 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6220 bfd_put_32 (obfd, BCTR, p), p += 4;
6221 return p;
6222}
6223
b34976b6 6224static bfd_boolean
4ce794b7 6225ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 6226{
721956f4
AM		 6227 struct ppc_stub_hash_entry *stub_entry;
6228 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 6229 struct bfd_link_info *info;
6230 struct ppc_link_hash_table *htab;
721956f4
AM		 6231 bfd_byte *loc;
6232 bfd_byte *p;
6233 unsigned int indx;
411e1bfb 6234 struct plt_entry *ent;
721956f4
AM		 6235 bfd_vma off;
6236 int size;
5d1634d7 6237
721956f4
AM		 6238 /* Massage our args to the form they really have. */
6239 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 6240 info = in_arg;
5d1634d7 6241
5d1634d7
AM		 6242 htab = ppc_hash_table (info);
6243
721956f4 6244 /* Make a note of the offset within the stubs for this entry. */
eea6121a 6245 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 6246 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 6247
4ce794b7 6248 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 6249 switch (stub_entry->stub_type)
5d1634d7 6250 {
721956f4 6251 case ppc_stub_long_branch:
ad8e1ba5 6252 case ppc_stub_long_branch_r2off:
721956f4
AM		 6253 /* Branches are relative. This is where we are going to. */
6254 off = (stub_entry->target_value
6255 + stub_entry->target_section->output_offset
6256 + stub_entry->target_section->output_section->vma);
5d1634d7 6257
721956f4
AM		 6258 /* And this is where we are coming from. */
6259 off -= (stub_entry->stub_offset
97b639ba
AM		 6260 + stub_entry->stub_sec->output_offset
6261 + stub_entry->stub_sec->output_section->vma);
e86ce104 6262
ad8e1ba5
AM		 6263 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
6264 size = 4;
6265 else
6266 {
6267 bfd_vma r2off;
6268
6269 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6270 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 6271 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 6272 loc += 4;
97b639ba 6273 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 6274 loc += 4;
97b639ba 6275 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 6276 loc += 4;
6277 off -= 12;
6278 size = 16;
6279 }
97b639ba 6280 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 6281
6282 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
721956f4 6283 break;
e86ce104 6284
721956f4 6285 case ppc_stub_plt_branch:
ad8e1ba5 6286 case ppc_stub_plt_branch_r2off:
721956f4
AM		 6287 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6288 stub_entry->root.string + 9,
b34976b6 6289 FALSE, FALSE);
721956f4
AM		 6290 if (br_entry == NULL)
6291 {
6292 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6293 stub_entry->root.string + 9);
b34976b6
AM		 6294 htab->stub_error = TRUE;
6295 return FALSE;
721956f4
AM		 6296 }
6297
6298 off = (stub_entry->target_value
6299 + stub_entry->target_section->output_offset
6300 + stub_entry->target_section->output_section->vma);
6301
4ce794b7
AM		 6302 bfd_put_64 (htab->brlt->owner, off,
6303 htab->brlt->contents + br_entry->offset);
721956f4
AM		 6304
6305 if (info->shared)
6306 {
6307 /* Create a reloc for the branch lookup table entry. */
6308 Elf_Internal_Rela rela;
ad8e1ba5 6309 bfd_byte *rl;
5d1634d7 6310
721956f4 6311 rela.r_offset = (br_entry->offset
4ce794b7
AM		 6312 + htab->brlt->output_offset
6313 + htab->brlt->output_section->vma);
721956f4
AM		 6314 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6315 rela.r_addend = off;
6316
4ce794b7
AM		 6317 rl = htab->relbrlt->contents;
6318 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6319 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 6320 }
6321
6322 off = (br_entry->offset
4ce794b7
AM		 6323 + htab->brlt->output_offset
6324 + htab->brlt->output_section->vma
6325 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 6326 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 6327
ad8e1ba5 6328 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 6329 {
6330 (*_bfd_error_handler)
e86ce104 6331 (_("linkage table error against `%s'"),
721956f4 6332 stub_entry->root.string);
5d1634d7 6333 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 6334 htab->stub_error = TRUE;
6335 return FALSE;
5d1634d7 6336 }
41bd81ab 6337
721956f4 6338 indx = off;
ad8e1ba5
AM		 6339 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
6340 {
97b639ba 6341 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 6342 loc += 4;
97b639ba 6343 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 6344 size = 16;
6345 }
6346 else
6347 {
6348 bfd_vma r2off;
6349
6350 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6351 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 6352 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 6353 loc += 4;
97b639ba 6354 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 6355 loc += 4;
97b639ba 6356 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 6357 loc += 4;
97b639ba 6358 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 6359 loc += 4;
97b639ba 6360 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 6361 size = 28;
6362 }
6363 loc += 4;
97b639ba 6364 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 6365 loc += 4;
97b639ba 6366 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 6367 break;
5d1634d7 6368
721956f4 6369 case ppc_stub_plt_call:
c862ae31
AM		 6370 /* Do the best we can for shared libraries built without
6371 exporting ".foo" for each "foo". This can happen when symbol
6372 versioning scripts strip all bar a subset of symbols. */
34814b9f
AM		 6373 if (stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
6374 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 6375 {
6376 /* Point the symbol at the stub. There may be multiple stubs,
6377 we don't really care; The main thing is to make this sym
8f3bab57
AM		 6378 defined somewhere. Maybe defining the symbol in the stub
6379 section is a silly idea. If we didn't do this, htab->top_id
6380 could disappear. */
34814b9f
AM		 6381 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
6382 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
6383 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 6384 }
6385
721956f4 6386 /* Now build the stub. */
411e1bfb
AM		 6387 off = (bfd_vma) -1;
6388 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6389 if (ent->addend == stub_entry->addend)
6390 {
6391 off = ent->plt.offset;
6392 break;
6393 }
721956f4
AM		 6394 if (off >= (bfd_vma) -2)
6395 abort ();
6396
6397 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 6398 off += (htab->plt->output_offset
6399 + htab->plt->output_section->vma
6400 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 6401 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 6402
ad8e1ba5 6403 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 6404 {
6405 (*_bfd_error_handler)
6406 (_("linkage table error against `%s'"),
6407 stub_entry->h->elf.root.root.string);
6408 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 6409 htab->stub_error = TRUE;
6410 return FALSE;
721956f4
AM		 6411 }
6412
97b639ba 6413 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 6414 size = p - loc;
6415 break;
6416
6417 default:
6418 BFD_FAIL ();
b34976b6 6419 return FALSE;
721956f4
AM		 6420 }
6421
eea6121a 6422 stub_entry->stub_sec->size += size;
97b639ba
AM		 6423
6424 if (htab->emit_stub_syms
6425 && !(stub_entry->stub_type == ppc_stub_plt_call
34814b9f
AM		 6426 && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined
6427 && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec
6428 && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset))
97b639ba
AM		 6429 {
6430 struct elf_link_hash_entry *h;
6431 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
6432 TRUE, FALSE, FALSE);
6433 if (h == NULL)
6434 return FALSE;
6435 if (h->root.type == bfd_link_hash_new)
6436 {
6437 h->root.type = bfd_link_hash_defined;
6438 h->root.u.def.section = stub_entry->stub_sec;
6439 h->root.u.def.value = stub_entry->stub_offset;
6440 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
6441 | ELF_LINK_HASH_DEF_REGULAR
6442 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6443 | ELF_LINK_FORCED_LOCAL);
6444 }
6445 }
6446
b34976b6 6447 return TRUE;
721956f4
AM		 6448}
6449
6450/* As above, but don't actually build the stub. Just bump offset so
6451 we know stub section sizes, and select plt_branch stubs where
6452 long_branch stubs won't do. */
6453
b34976b6 6454static bfd_boolean
4ce794b7 6455ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 6456{
6457 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 6458 struct bfd_link_info *info;
721956f4
AM		 6459 struct ppc_link_hash_table *htab;
6460 bfd_vma off;
6461 int size;
6462
6463 /* Massage our args to the form they really have. */
6464 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 6465 info = in_arg;
6466
6467 htab = ppc_hash_table (info);
721956f4
AM		 6468
6469 if (stub_entry->stub_type == ppc_stub_plt_call)
6470 {
411e1bfb 6471 struct plt_entry *ent;
58ac9f71 6472 off = (bfd_vma) -1;
411e1bfb
AM		 6473 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6474 if (ent->addend == stub_entry->addend)
6475 {
6476 off = ent->plt.offset & ~(bfd_vma) 1;
6477 break;
6478 }
58ac9f71 6479 if (off >= (bfd_vma) -2)
411e1bfb 6480 abort ();
4ce794b7
AM		 6481 off += (htab->plt->output_offset
6482 + htab->plt->output_section->vma
6483 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 6484 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 6485
ad8e1ba5 6486 size = PLT_CALL_STUB_SIZE;
4ce794b7 6487 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 6488 size += 4;
6489 }
6490 else
6491 {
ad8e1ba5
AM		 6492 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6493 variants. */
721956f4
AM		 6494 off = (stub_entry->target_value
6495 + stub_entry->target_section->output_offset
6496 + stub_entry->target_section->output_section->vma);
eea6121a 6497 off -= (stub_entry->stub_sec->size
721956f4
AM		 6498 + stub_entry->stub_sec->output_offset
6499 + stub_entry->stub_sec->output_section->vma);
6500
ad8e1ba5
AM		 6501 /* Reset the stub type from the plt variant in case we now
6502 can reach with a shorter stub. */
6503 if (stub_entry->stub_type >= ppc_stub_plt_branch)
6504 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
6505
6506 size = 4;
6507 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
6508 {
6509 off -= 12;
6510 size = 16;
6511 }
6512
6513 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 6514 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6515 {
6516 struct ppc_branch_hash_entry *br_entry;
6517
6518 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6519 stub_entry->root.string + 9,
b34976b6 6520 TRUE, FALSE);
721956f4
AM		 6521 if (br_entry == NULL)
6522 {
6523 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6524 stub_entry->root.string + 9);
b34976b6
AM		 6525 htab->stub_error = TRUE;
6526 return FALSE;
721956f4
AM		 6527 }
6528
6529 if (br_entry->iter != htab->stub_iteration)
6530 {
6531 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 6532 br_entry->offset = htab->brlt->size;
6533 htab->brlt->size += 8;
63bc6f6c
AM		 6534
6535 if (info->shared)
eea6121a 6536 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 6537 }
ad8e1ba5
AM		 6538
6539 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 6540 size = 16;
ad8e1ba5
AM		 6541 if (stub_entry->stub_type != ppc_stub_plt_branch)
6542 size = 28;
721956f4
AM		 6543 }
6544 }
6545
eea6121a 6546 stub_entry->stub_sec->size += size;
b34976b6 6547 return TRUE;
721956f4
AM		 6548}
6549
6550/* Set up various things so that we can make a list of input sections
6551 for each output section included in the link. Returns -1 on error,
cedb70c5 6552 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 6553
6554int
4ce794b7 6555ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
721956f4
AM		 6556{
6557 bfd *input_bfd;
734b6cf9 6558 int top_id, top_index, id;
721956f4 6559 asection *section;
734b6cf9 6560 asection **input_list;
721956f4
AM		 6561 bfd_size_type amt;
6562 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6563
4ce794b7 6564 if (htab->brlt == NULL)
721956f4
AM		 6565 return 0;
6566
1e2f5b6e 6567 /* Find the top input section id. */
3d6f9012 6568 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 6569 input_bfd != NULL;
6570 input_bfd = input_bfd->link_next)
6571 {
721956f4
AM		 6572 for (section = input_bfd->sections;
6573 section != NULL;
6574 section = section->next)
6575 {
6576 if (top_id < section->id)
6577 top_id = section->id;
6578 }
6579 }
721956f4 6580
8f3bab57 6581 htab->top_id = top_id;
721956f4 6582 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 6583 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 6584 if (htab->stub_group == NULL)
6585 return -1;
6586
3d6f9012
AM		 6587 /* Set toc_off for com, und, abs and ind sections. */
6588 for (id = 0; id < 3; id++)
6589 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 6590
3d6f9012 6591 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 6592
6593 /* We can't use output_bfd->section_count here to find the top output
6594 section index as some sections may have been removed, and
6595 _bfd_strip_section_from_output doesn't renumber the indices. */
6596 for (section = output_bfd->sections, top_index = 0;
6597 section != NULL;
6598 section = section->next)
6599 {
6600 if (top_index < section->index)
6601 top_index = section->index;
6602 }
6603
6604 htab->top_index = top_index;
6605 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 6606 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 6607 htab->input_list = input_list;
6608 if (input_list == NULL)
6609 return -1;
6610
721956f4
AM		 6611 return 1;
6612}
6613
e717da7e
AM		 6614/* The linker repeatedly calls this function for each TOC input section
6615 and linker generated GOT section. Group input bfds such that the toc
6616 within a group is less than 64k in size. Will break with cute linker
6617 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 6618
6619void
4ce794b7 6620ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 6621{
6622 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6623
6624 if (!htab->no_multi_toc)
6625 {
6626 bfd_vma addr = isec->output_offset + isec->output_section->vma;
6627 bfd_vma off = addr - htab->toc_curr;
eea6121a 6628 if (off + isec->size > 0x10000)
ad8e1ba5
AM		 6629 {
6630 htab->toc_curr = addr;
6631 htab->multi_toc_needed = 1;
6632 }
6633 elf_gp (isec->owner) = (htab->toc_curr
6634 - elf_gp (isec->output_section->owner)
6635 + TOC_BASE_OFF);
6636 }
6637}
6638
6639/* Called after the last call to the above function. */
6640
6641void
4ce794b7
AM		 6642ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
6643 struct bfd_link_info *info)
ad8e1ba5
AM		 6644{
6645 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5
AM		 6646
6647 /* toc_curr tracks the TOC offset used for code sections below in
6648 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 6649 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 6650}
6651
9b5ecbd0
AM		 6652/* No toc references were found in ISEC. If the code in ISEC makes no
6653 calls, then there's no need to use toc adjusting stubs when branching
6654 into ISEC. Actually, indirect calls from ISEC are OK as they will
6655 load r2. */
6656
6657static int
4ce794b7 6658toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0
AM		 6659{
6660 bfd_byte *contents;
6661 bfd_size_type i;
6662 int ret;
6663 int branch_ok;
6664
772119ce
AM		 6665 /* We know none of our code bearing sections will need toc stubs. */
6666 if ((isec->flags & SEC_LINKER_CREATED) != 0)
6667 return 0;
6668
eea6121a 6669 if (isec->size == 0)
082c50f8
AM		 6670 return 0;
6671
9b5ecbd0
AM		 6672 /* Hack for linux kernel. .fixup contains branches, but only back to
6673 the function that hit an exception. */
6674 branch_ok = strcmp (isec->name, ".fixup") == 0;
6675
6676 contents = elf_section_data (isec)->this_hdr.contents;
6677 if (contents == NULL)
6678 {
eea6121a 6679 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
9b5ecbd0 6680 {
eea6121a
AM		 6681 if (contents != NULL)
6682 free (contents);
9b5ecbd0
AM		 6683 return -1;
6684 }
6685 if (info->keep_memory)
6686 elf_section_data (isec)->this_hdr.contents = contents;
6687 }
6688
6689 /* Code scan, because we don't necessarily have relocs on calls to
6690 static functions. */
6691 ret = 0;
eea6121a 6692 for (i = 0; i < isec->size; i += 4)
9b5ecbd0
AM		 6693 {
6694 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
6695 /* Is this a branch? */
772119ce 6696 if ((insn & (0x3f << 26)) == (18 << 26)
9b5ecbd0
AM		 6697 /* If branch and link, it's a function call. */
6698 && ((insn & 1) != 0
6699 /* Sibling calls use a plain branch. I don't know a way
6700 of deciding whether a branch is really a sibling call. */
6701 || !branch_ok))
6702 {
6703 ret = 1;
6704 break;
6705 }
6706 }
6707
6708 if (elf_section_data (isec)->this_hdr.contents != contents)
6709 free (contents);
6710 return ret;
6711}
6712
721956f4
AM		 6713/* The linker repeatedly calls this function for each input section,
6714 in the order that input sections are linked into output sections.
6715 Build lists of input sections to determine groupings between which
6716 we may insert linker stubs. */
6717
9b5ecbd0 6718bfd_boolean
4ce794b7 6719ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 6720{
6721 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9b5ecbd0 6722 int ret;
721956f4 6723
734b6cf9
AM		 6724 if ((isec->output_section->flags & SEC_CODE) != 0
6725 && isec->output_section->index <= htab->top_index)
721956f4 6726 {
734b6cf9 6727 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 6728 /* Steal the link_sec pointer for our list. */
721956f4 6729#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 6730 /* This happens to make the list in reverse order,
6731 which is what we want. */
734b6cf9
AM		 6732 PREV_SEC (isec) = *list;
6733 *list = isec;
721956f4 6734 }
ad8e1ba5
AM		 6735
6736 /* If a code section has a function that uses the TOC then we need
6737 to use the right TOC (obviously). Also, make sure that .opd gets
ee87f2da
AM		 6738 the correct TOC value for R_PPC64_TOC relocs that don't have or
6739 can't find their function symbol (shouldn't ever happen now). */
ad8e1ba5 6740 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
9b5ecbd0
AM		 6741 {
6742 if (elf_gp (isec->owner) != 0)
6743 htab->toc_curr = elf_gp (isec->owner);
6744 }
6745 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
6746 return FALSE;
6747 else
6748 isec->has_gp_reloc = ret;
ad8e1ba5
AM		 6749
6750 /* Functions that don't use the TOC can belong in any TOC group.
6751 Use the last TOC base. This happens to make _init and _fini
6752 pasting work. */
6753 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 6754 return TRUE;
721956f4
AM		 6755}
6756
6757/* See whether we can group stub sections together. Grouping stub
6758 sections may result in fewer stubs. More importantly, we need to
6759 put all .init* and .fini* stubs at the beginning of the .init or
6760 .fini output sections respectively, because glibc splits the
6761 _init and _fini functions into multiple parts. Putting a stub in
6762 the middle of a function is not a good idea. */
6763
6764static void
4ce794b7
AM		 6765group_sections (struct ppc_link_hash_table *htab,
6766 bfd_size_type stub_group_size,
6767 bfd_boolean stubs_always_before_branch)
721956f4 6768{
734b6cf9
AM		 6769 asection **list = htab->input_list + htab->top_index;
6770 do
721956f4 6771 {
734b6cf9
AM		 6772 asection *tail = *list;
6773 while (tail != NULL)
721956f4 6774 {
734b6cf9
AM		 6775 asection *curr;
6776 asection *prev;
6777 bfd_size_type total;
6778 bfd_boolean big_sec;
6779 bfd_vma curr_toc;
6780
6781 curr = tail;
eea6121a 6782 total = tail->size;
734b6cf9
AM		 6783 big_sec = total >= stub_group_size;
6784 curr_toc = htab->stub_group[tail->id].toc_off;
6785
6786 while ((prev = PREV_SEC (curr)) != NULL
6787 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 6788 < stub_group_size)
6789 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 6790 curr = prev;
6791
6792 /* OK, the size from the start of CURR to the end is less
6793 than stub_group_size and thus can be handled by one stub
6794 section. (or the tail section is itself larger than
6795 stub_group_size, in which case we may be toast.) We
6796 should really be keeping track of the total size of stubs
6797 added here, as stubs contribute to the final output
6798 section size. That's a little tricky, and this way will
6799 only break if stubs added make the total size more than
6800 2^25, ie. for the default stub_group_size, if stubs total
6801 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6802 do
721956f4
AM		 6803 {
6804 prev = PREV_SEC (tail);
734b6cf9 6805 /* Set up this stub group. */
721956f4
AM		 6806 htab->stub_group[tail->id].link_sec = curr;
6807 }
734b6cf9
AM		 6808 while (tail != curr && (tail = prev) != NULL);
6809
6810 /* But wait, there's more! Input sections up to stub_group_size
6811 bytes before the stub section can be handled by it too.
6812 Don't do this if we have a really large section after the
6813 stubs, as adding more stubs increases the chance that
6814 branches may not reach into the stub section. */
6815 if (!stubs_always_before_branch && !big_sec)
6816 {
6817 total = 0;
6818 while (prev != NULL
6819 && ((total += tail->output_offset - prev->output_offset)
6820 < stub_group_size)
6821 && htab->stub_group[prev->id].toc_off == curr_toc)
6822 {
6823 tail = prev;
6824 prev = PREV_SEC (tail);
6825 htab->stub_group[tail->id].link_sec = curr;
6826 }
6827 }
6828 tail = prev;
721956f4
AM		 6829 }
6830 }
734b6cf9
AM		 6831 while (list-- != htab->input_list);
6832 free (htab->input_list);
721956f4
AM		 6833#undef PREV_SEC
6834}
6835
721956f4
AM		 6836/* Determine and set the size of the stub section for a final link.
6837
6838 The basic idea here is to examine all the relocations looking for
6839 PC-relative calls to a target that is unreachable with a "bl"
6840 instruction. */
6841
b34976b6 6842bfd_boolean
4ce794b7 6843ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 6844 struct bfd_link_info *info,
6845 bfd_signed_vma group_size,
6846 asection *(*add_stub_section) (const char *, asection *),
6847 void (*layout_sections_again) (void))
721956f4
AM		 6848{
6849 bfd_size_type stub_group_size;
b34976b6 6850 bfd_boolean stubs_always_before_branch;
721956f4
AM		 6851 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6852
6853 /* Stash our params away. */
721956f4
AM		 6854 htab->add_stub_section = add_stub_section;
6855 htab->layout_sections_again = layout_sections_again;
6856 stubs_always_before_branch = group_size < 0;
6857 if (group_size < 0)
6858 stub_group_size = -group_size;
6859 else
6860 stub_group_size = group_size;
6861 if (stub_group_size == 1)
6862 {
6863 /* Default values. */
58ac9f71
AM		 6864 if (stubs_always_before_branch)
6865 {
6866 stub_group_size = 0x1e00000;
6867 if (htab->has_14bit_branch)
6868 stub_group_size = 0x7800;
6869 }
6870 else
6871 {
6872 stub_group_size = 0x1c00000;
6873 if (htab->has_14bit_branch)
6874 stub_group_size = 0x7000;
6875 }
721956f4
AM		 6876 }
6877
6878 group_sections (htab, stub_group_size, stubs_always_before_branch);
6879
721956f4
AM		 6880 while (1)
6881 {
6882 bfd *input_bfd;
6883 unsigned int bfd_indx;
6884 asection *stub_sec;
b34976b6 6885 bfd_boolean stub_changed;
721956f4
AM		 6886
6887 htab->stub_iteration += 1;
b34976b6 6888 stub_changed = FALSE;
721956f4
AM		 6889
6890 for (input_bfd = info->input_bfds, bfd_indx = 0;
6891 input_bfd != NULL;
6892 input_bfd = input_bfd->link_next, bfd_indx++)
6893 {
6894 Elf_Internal_Shdr *symtab_hdr;
6895 asection *section;
6cdc0ccc 6896 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 6897
6898 /* We'll need the symbol table in a second. */
6899 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6900 if (symtab_hdr->sh_info == 0)
6901 continue;
6902
721956f4
AM		 6903 /* Walk over each section attached to the input bfd. */
6904 for (section = input_bfd->sections;
6905 section != NULL;
6906 section = section->next)
6907 {
721956f4 6908 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 6909
6910 /* If there aren't any relocs, then there's nothing more
6911 to do. */
6912 if ((section->flags & SEC_RELOC) == 0
6913 || section->reloc_count == 0)
6914 continue;
6915
6916 /* If this section is a link-once section that will be
6917 discarded, then don't create any stubs. */
6918 if (section->output_section == NULL
6919 || section->output_section->owner != output_bfd)
6920 continue;
6921
1e2f5b6e
AM		 6922 /* Get the relocs. */
6923 internal_relocs
4ce794b7 6924 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 6925 info->keep_memory);
721956f4 6926 if (internal_relocs == NULL)
1e2f5b6e 6927 goto error_ret_free_local;
721956f4
AM		 6928
6929 /* Now examine each relocation. */
6930 irela = internal_relocs;
6931 irelaend = irela + section->reloc_count;
6932 for (; irela < irelaend; irela++)
6933 {
4ce794b7
AM		 6934 enum elf_ppc64_reloc_type r_type;
6935 unsigned int r_indx;
721956f4
AM		 6936 enum ppc_stub_type stub_type;
6937 struct ppc_stub_hash_entry *stub_entry;
6938 asection *sym_sec;
6939 bfd_vma sym_value;
6940 bfd_vma destination;
6941 struct ppc_link_hash_entry *hash;
411e1bfb
AM		 6942 struct elf_link_hash_entry *h;
6943 Elf_Internal_Sym *sym;
721956f4
AM		 6944 char *stub_name;
6945 const asection *id_sec;
6946
6947 r_type = ELF64_R_TYPE (irela->r_info);
6948 r_indx = ELF64_R_SYM (irela->r_info);
6949
4ce794b7 6950 if (r_type >= R_PPC64_max)
721956f4
AM		 6951 {
6952 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 6953 goto error_ret_free_internal;
721956f4
AM		 6954 }
6955
6956 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 6957 if (r_type != R_PPC64_REL24
6958 && r_type != R_PPC64_REL14
6959 && r_type != R_PPC64_REL14_BRTAKEN
6960 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 6961 continue;
6962
6963 /* Now determine the call target, its name, value,
6964 section. */
721956f4 6965 destination = 0;
411e1bfb
AM		 6966 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6967 r_indx, input_bfd))
6968 goto error_ret_free_internal;
6969 hash = (struct ppc_link_hash_entry *) h;
6970
6971 if (hash == NULL)
721956f4
AM		 6972 {
6973 /* It's a local symbol. */
411e1bfb 6974 sym_value = sym->st_value;
721956f4
AM		 6975 destination = (sym_value + irela->r_addend
6976 + sym_sec->output_offset
6977 + sym_sec->output_section->vma);
6978 }
6979 else
6980 {
6981 /* It's an external symbol. */
411e1bfb 6982 sym_value = 0;
721956f4
AM		 6983 if (hash->elf.root.type == bfd_link_hash_defined
6984 || hash->elf.root.type == bfd_link_hash_defweak)
6985 {
721956f4
AM		 6986 sym_value = hash->elf.root.u.def.value;
6987 if (sym_sec->output_section != NULL)
6988 destination = (sym_value + irela->r_addend
6989 + sym_sec->output_offset
6990 + sym_sec->output_section->vma);
6991 }
6992 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6993 ;
6994 else if (hash->elf.root.type == bfd_link_hash_undefined)
6995 ;
6996 else
6997 {
6998 bfd_set_error (bfd_error_bad_value);
6999 goto error_ret_free_internal;
7000 }
7001 }
7002
7003 /* Determine what (if any) linker stub is needed. */
7004 stub_type = ppc_type_of_stub (section, irela, &hash,
7005 destination);
ad8e1ba5
AM		 7006
7007 if (stub_type != ppc_stub_plt_call)
7008 {
7009 /* Check whether we need a TOC adjusting stub.
7010 Since the linker pastes together pieces from
7011 different object files when creating the
7012 _init and _fini functions, it may be that a
7013 call to what looks like a local sym is in
7014 fact a call needing a TOC adjustment. */
7015 if (sym_sec != NULL
7016 && sym_sec->output_section != NULL
7017 && (htab->stub_group[sym_sec->id].toc_off
9b5ecbd0
AM		 7018 != htab->stub_group[section->id].toc_off)
7019 && sym_sec->has_gp_reloc
7020 && section->has_gp_reloc)
ad8e1ba5
AM		 7021 stub_type = ppc_stub_long_branch_r2off;
7022 }
7023
721956f4
AM		 7024 if (stub_type == ppc_stub_none)
7025 continue;
7026
411e1bfb
AM		 7027 /* __tls_get_addr calls might be eliminated. */
7028 if (stub_type != ppc_stub_plt_call
7029 && hash != NULL
7030 && &hash->elf == htab->tls_get_addr
7031 && section->has_tls_reloc
7032 && irela != internal_relocs)
7033 {
7034 /* Get tls info. */
e7b938ca 7035 char *tls_mask;
411e1bfb 7036
0d4792f7 7037 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 7038 irela - 1, input_bfd))
7039 goto error_ret_free_internal;
e7b938ca 7040 if (*tls_mask != 0)
411e1bfb
AM		 7041 continue;
7042 }
7043
721956f4
AM		 7044 /* Support for grouping stub sections. */
7045 id_sec = htab->stub_group[section->id].link_sec;
7046
7047 /* Get the name of this stub. */
7048 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
7049 if (!stub_name)
7050 goto error_ret_free_internal;
7051
7052 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 7053 stub_name, FALSE, FALSE);
721956f4
AM		 7054 if (stub_entry != NULL)
7055 {
7056 /* The proper stub has already been created. */
7057 free (stub_name);
7058 continue;
7059 }
7060
7061 stub_entry = ppc_add_stub (stub_name, section, htab);
7062 if (stub_entry == NULL)
7063 {
7064 free (stub_name);
6cdc0ccc
AM		 7065 error_ret_free_internal:
7066 if (elf_section_data (section)->relocs == NULL)
7067 free (internal_relocs);
7068 error_ret_free_local:
7069 if (local_syms != NULL
7070 && (symtab_hdr->contents
7071 != (unsigned char *) local_syms))
7072 free (local_syms);
b34976b6 7073 return FALSE;
721956f4
AM		 7074 }
7075
ad8e1ba5 7076 stub_entry->stub_type = stub_type;
721956f4
AM		 7077 stub_entry->target_value = sym_value;
7078 stub_entry->target_section = sym_sec;
721956f4 7079 stub_entry->h = hash;
411e1bfb 7080 stub_entry->addend = irela->r_addend;
b34976b6 7081 stub_changed = TRUE;
721956f4
AM		 7082 }
7083
7084 /* We're done with the internal relocs, free them. */
6cdc0ccc 7085 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 7086 free (internal_relocs);
721956f4 7087 }
6cdc0ccc
AM		 7088
7089 if (local_syms != NULL
7090 && symtab_hdr->contents != (unsigned char *) local_syms)
7091 {
7092 if (!info->keep_memory)
7093 free (local_syms);
7094 else
7095 symtab_hdr->contents = (unsigned char *) local_syms;
7096 }
721956f4
AM		 7097 }
7098
7099 if (!stub_changed)
7100 break;
7101
7102 /* OK, we've added some stubs. Find out the new size of the
7103 stub sections. */
7104 for (stub_sec = htab->stub_bfd->sections;
7105 stub_sec != NULL;
7106 stub_sec = stub_sec->next)
e717da7e 7107 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
eea6121a
AM		 7108 stub_sec->size = 0;
7109
7110 htab->brlt->size = 0;
63bc6f6c 7111 if (info->shared)
eea6121a 7112 htab->relbrlt->size = 0;
721956f4 7113
63bc6f6c 7114 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 7115
7116 /* Ask the linker to do its stuff. */
7117 (*htab->layout_sections_again) ();
7118 }
7119
afbe61cf
AM		 7120 /* It would be nice to strip .branch_lt from the output if the
7121 section is empty, but it's too late. If we strip sections here,
7122 the dynamic symbol table is corrupted since the section symbol
7123 for the stripped section isn't written. */
721956f4 7124
b34976b6 7125 return TRUE;
721956f4
AM		 7126}
7127
7128/* Called after we have determined section placement. If sections
805fc799 7129 move, we'll be called again. Provide a value for TOCstart. */
721956f4 7130
805fc799 7131bfd_vma
4ce794b7 7132ppc64_elf_toc (bfd *obfd)
721956f4 7133{
805fc799
AM		 7134 asection *s;
7135 bfd_vma TOCstart;
721956f4 7136
805fc799
AM		 7137 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7138 order. The TOC starts where the first of these sections starts. */
7139 s = bfd_get_section_by_name (obfd, ".got");
7140 if (s == NULL)
7141 s = bfd_get_section_by_name (obfd, ".toc");
7142 if (s == NULL)
7143 s = bfd_get_section_by_name (obfd, ".tocbss");
7144 if (s == NULL)
7145 s = bfd_get_section_by_name (obfd, ".plt");
7146 if (s == NULL)
7147 {
7148 /* This may happen for
7149 o references to TOC base (SYM@toc / TOC[tc0]) without a
7150 .toc directive
7151 o bad linker script
7152 o --gc-sections and empty TOC sections
7153
7154 FIXME: Warn user? */
7155
7156 /* Look for a likely section. We probably won't even be
7157 using TOCstart. */
7158 for (s = obfd->sections; s != NULL; s = s->next)
7159 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
7160 == (SEC_ALLOC | SEC_SMALL_DATA))
7161 break;
721956f4 7162 if (s == NULL)
805fc799
AM		 7163 for (s = obfd->sections; s != NULL; s = s->next)
7164 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
7165 == (SEC_ALLOC | SEC_SMALL_DATA))
7166 break;
721956f4 7167 if (s == NULL)
805fc799
AM		 7168 for (s = obfd->sections; s != NULL; s = s->next)
7169 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
7170 break;
721956f4 7171 if (s == NULL)
805fc799
AM		 7172 for (s = obfd->sections; s != NULL; s = s->next)
7173 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
7174 break;
7175 }
721956f4 7176
805fc799
AM		 7177 TOCstart = 0;
7178 if (s != NULL)
7179 TOCstart = s->output_section->vma + s->output_offset;
721956f4 7180
805fc799 7181 return TOCstart;
721956f4
AM		 7182}
7183
7184/* Build all the stubs associated with the current output file.
7185 The stubs are kept in a hash table attached to the main linker
7186 hash table. This function is called via gldelf64ppc_finish. */
7187
b34976b6 7188bfd_boolean
4ce794b7
AM		 7189ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
7190 struct bfd_link_info *info,
7191 char **stats)
5d1634d7
AM		 7192{
7193 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 7194 asection *stub_sec;
5d1634d7 7195 bfd_byte *p;
e717da7e 7196 int stub_sec_count = 0;
5d1634d7 7197
ad8e1ba5 7198 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 7199
7200 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 7201 for (stub_sec = htab->stub_bfd->sections;
7202 stub_sec != NULL;
7203 stub_sec = stub_sec->next)
eea6121a
AM		 7204 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
7205 && stub_sec->size != 0)
e717da7e 7206 {
eea6121a
AM		 7207 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
7208 if (stub_sec->contents == NULL)
7209 return FALSE;
7210 /* We want to check that built size is the same as calculated
7211 size. rawsize is a convenient location to use. */
7212 stub_sec->rawsize = stub_sec->size;
7213 stub_sec->size = 0;
e717da7e 7214 }
5d1634d7 7215
4ce794b7 7216 if (htab->plt != NULL)
5d1634d7 7217 {
9f951329 7218 unsigned int indx;
ad8e1ba5 7219 bfd_vma plt0;
9f951329 7220
721956f4 7221 /* Build the .glink plt call stub. */
4ce794b7
AM		 7222 plt0 = (htab->plt->output_section->vma
7223 + htab->plt->output_offset
7224 - (htab->glink->output_section->vma
7225 + htab->glink->output_offset
ad8e1ba5
AM		 7226 + GLINK_CALL_STUB_SIZE));
7227 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 7228 {
ad8e1ba5
AM		 7229 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
7230 bfd_set_error (bfd_error_bad_value);
7231 return FALSE;
721956f4 7232 }
721956f4 7233
97b639ba
AM		 7234 if (htab->emit_stub_syms)
7235 {
7236 struct elf_link_hash_entry *h;
7237 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
7238 if (h == NULL)
7239 return FALSE;
7240 if (h->root.type == bfd_link_hash_new)
7241 {
7242 h->root.type = bfd_link_hash_defined;
7243 h->root.u.def.section = htab->glink;
7244 h->root.u.def.value = 0;
7245 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7246 | ELF_LINK_HASH_DEF_REGULAR
7247 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7248 | ELF_LINK_FORCED_LOCAL);
7249 }
7250 }
4ce794b7
AM		 7251 p = htab->glink->contents;
7252 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 7253 p += 4;
4ce794b7 7254 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 7255 p += 4;
4ce794b7 7256 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 7257 p += 4;
4ce794b7 7258 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 7259 p += 4;
4ce794b7 7260 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 7261 p += 4;
4ce794b7 7262 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 7263 p += 4;
4ce794b7 7264 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 7265 p += 4;
4ce794b7 7266 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 7267 p += 4;
4ce794b7 7268 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 7269 p += 4;
4ce794b7 7270 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 7271 p += 4;
4ce794b7 7272 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 7273 p += 4;
4ce794b7 7274 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 7275 p += 4;
4ce794b7 7276 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 7277 p += 4;
4ce794b7 7278 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 7279 p += 4;
4ce794b7 7280 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 7281 p += 4;
4ce794b7 7282 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 7283 p += 4;
7284
9f951329
AM		 7285 /* Build the .glink lazy link call stubs. */
7286 indx = 0;
eea6121a 7287 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 7288 {
7289 if (indx < 0x8000)
7290 {
4ce794b7 7291 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 7292 p += 4;
7293 }
7294 else
7295 {
4ce794b7 7296 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 7297 p += 4;
4ce794b7 7298 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 7299 p += 4;
7300 }
4ce794b7
AM		 7301 bfd_put_32 (htab->glink->owner,
7302 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 7303 indx++;
9f951329
AM		 7304 p += 4;
7305 }
eea6121a 7306 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 7307 }
5d1634d7 7308
eea6121a 7309 if (htab->brlt->size != 0)
721956f4 7310 {
4ce794b7 7311 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 7312 htab->brlt->size);
4ce794b7 7313 if (htab->brlt->contents == NULL)
b34976b6 7314 return FALSE;
721956f4 7315 }
eea6121a 7316 if (info->shared && htab->relbrlt->size != 0)
63bc6f6c
AM		 7317 {
7318 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 7319 htab->relbrlt->size);
63bc6f6c
AM		 7320 if (htab->relbrlt->contents == NULL)
7321 return FALSE;
7322 }
5d1634d7 7323
721956f4
AM		 7324 /* Build the stubs as directed by the stub hash table. */
7325 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 7326
721956f4
AM		 7327 for (stub_sec = htab->stub_bfd->sections;
7328 stub_sec != NULL;
7329 stub_sec = stub_sec->next)
e717da7e
AM		 7330 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7331 {
7332 stub_sec_count += 1;
eea6121a 7333 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 7334 break;
7335 }
5d1634d7 7336
721956f4 7337 if (stub_sec != NULL
eea6121a 7338 || htab->glink->rawsize != htab->glink->size)
5d1634d7 7339 {
b34976b6 7340 htab->stub_error = TRUE;
721956f4 7341 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 7342 }
721956f4 7343
d2a300cf
AM		 7344 if (htab->stub_error)
7345 return FALSE;
7346
7347 if (stats != NULL)
7348 {
7349 *stats = bfd_malloc (500);
7350 if (*stats == NULL)
7351 return FALSE;
7352
7353 sprintf (*stats, _("linker stubs in %u groups\n"
7354 " branch %lu\n"
7355 " toc adjust %lu\n"
7356 " long branch %lu\n"
7357 " long toc adj %lu\n"
7358 " plt call %lu"),
e717da7e 7359 stub_sec_count,
4ce794b7
AM		 7360 htab->stub_count[ppc_stub_long_branch - 1],
7361 htab->stub_count[ppc_stub_long_branch_r2off - 1],
7362 htab->stub_count[ppc_stub_plt_branch - 1],
7363 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
7364 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 7365 }
7366 return TRUE;
5bd4f169
AM		 7367}
7368
5bd4f169
AM		 7369/* The RELOCATE_SECTION function is called by the ELF backend linker
7370 to handle the relocations for a section.
7371
7372 The relocs are always passed as Rela structures; if the section
7373 actually uses Rel structures, the r_addend field will always be
7374 zero.
7375
7376 This function is responsible for adjust the section contents as
7377 necessary, and (if using Rela relocs and generating a
1049f94e 7378 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 7379 necessary.
7380
7381 This function does not have to worry about setting the reloc
7382 address or the reloc symbol index.
7383
7384 LOCAL_SYMS is a pointer to the swapped in local symbols.
7385
7386 LOCAL_SECTIONS is an array giving the section in the input file
7387 corresponding to the st_shndx field of each local symbol.
7388
7389 The global hash table entry for the global symbols can be found
7390 via elf_sym_hashes (input_bfd).
7391
1049f94e 7392 When generating relocatable output, this function must handle
5bd4f169
AM		 7393 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7394 going to be the section symbol corresponding to the output
7395 section, which means that the addend must be adjusted
7396 accordingly. */
7397
b34976b6 7398static bfd_boolean
4ce794b7
AM		 7399ppc64_elf_relocate_section (bfd *output_bfd,
7400 struct bfd_link_info *info,
7401 bfd *input_bfd,
7402 asection *input_section,
7403 bfd_byte *contents,
7404 Elf_Internal_Rela *relocs,
7405 Elf_Internal_Sym *local_syms,
7406 asection **local_sections)
5bd4f169 7407{
65f38f15 7408 struct ppc_link_hash_table *htab;
5bd4f169
AM		 7409 Elf_Internal_Shdr *symtab_hdr;
7410 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 7411 Elf_Internal_Rela *rel;
7412 Elf_Internal_Rela *relend;
411e1bfb
AM		 7413 Elf_Internal_Rela outrel;
7414 bfd_byte *loc;
411e1bfb 7415 struct got_entry **local_got_ents;
5bd4f169 7416 bfd_vma TOCstart;
b34976b6
AM		 7417 bfd_boolean ret = TRUE;
7418 bfd_boolean is_opd;
96e0dda4 7419 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 7420 bfd_boolean is_power4 = FALSE;
5bd4f169 7421
1049f94e 7422 if (info->relocatable)
b34976b6 7423 return TRUE;
b491616a 7424
65f38f15 7425 /* Initialize howto table if needed. */
5bd4f169 7426 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 7427 ppc_howto_init ();
7428
65f38f15 7429 htab = ppc_hash_table (info);
411e1bfb 7430 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 7431 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 7432 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7433 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 7434 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 7435
5bd4f169
AM		 7436 rel = relocs;
7437 relend = relocs + input_section->reloc_count;
7438 for (; rel < relend; rel++)
7439 {
04c9666a 7440 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 7441 bfd_vma addend;
7442 bfd_reloc_status_type r;
7443 Elf_Internal_Sym *sym;
7444 asection *sec;
7445 struct elf_link_hash_entry *h;
721956f4 7446 struct elf_link_hash_entry *fdh;
5bd4f169 7447 const char *sym_name;
0d4792f7 7448 unsigned long r_symndx, toc_symndx;
951fd09b 7449 char tls_mask, tls_gd, tls_type;
0d4792f7 7450 char sym_type;
5bd4f169 7451 bfd_vma relocation;
b34976b6
AM		 7452 bfd_boolean unresolved_reloc;
7453 bfd_boolean warned;
50bc7936 7454 unsigned long insn, mask;
721956f4
AM		 7455 struct ppc_stub_hash_entry *stub_entry;
7456 bfd_vma max_br_offset;
7457 bfd_vma from;
5bd4f169 7458
4ce794b7 7459 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 7460 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 7461
7462 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7463 symbol of the previous ADDR64 reloc. The symbol gives us the
7464 proper TOC base to use. */
7465 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
7466 && rel != relocs
7467 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
7468 && is_opd)
7469 r_symndx = ELF64_R_SYM (rel[-1].r_info);
7470
4ce794b7
AM		 7471 sym = NULL;
7472 sec = NULL;
7473 h = NULL;
7474 sym_name = NULL;
b34976b6
AM		 7475 unresolved_reloc = FALSE;
7476 warned = FALSE;
65f38f15 7477
0b13192e 7478 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 7479 {
7480 /* It's a local symbol. */
4025353c
AM		 7481 long *opd_adjust;
7482
5bd4f169
AM		 7483 sym = local_syms + r_symndx;
7484 sec = local_sections[r_symndx];
411e1bfb 7485 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
0d4792f7 7486 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 7487 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 7488 opd_adjust = get_opd_info (sec);
7489 if (opd_adjust != NULL)
1e2f5b6e 7490 {
4025353c
AM		 7491 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 24];
7492 if (adjust == -1)
7493 relocation = 0;
7494 else
7495 relocation += adjust;
1e2f5b6e 7496 }
5bd4f169
AM		 7497 }
7498 else
7499 {
b2a8e766
AM		 7500 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7501 r_symndx, symtab_hdr, sym_hashes,
7502 h, sec, relocation,
7503 unresolved_reloc, warned);
5bd4f169 7504 sym_name = h->root.root.string;
0d4792f7 7505 sym_type = h->type;
5bd4f169
AM		 7506 }
7507
951fd09b
AM		 7508 /* TLS optimizations. Replace instruction sequences and relocs
7509 based on information we collected in tls_optimize. We edit
7510 RELOCS so that --emit-relocs will output something sensible
7511 for the final instruction stream. */
7512 tls_mask = 0;
7513 tls_gd = 0;
0d4792f7 7514 toc_symndx = 0;
d881513a 7515 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 7516 {
7517 if (h != NULL)
e7b938ca 7518 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
411e1bfb
AM		 7519 else if (local_got_ents != NULL)
7520 {
e7b938ca
AM		 7521 char *lgot_masks;
7522 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7523 tls_mask = lgot_masks[r_symndx];
411e1bfb 7524 }
0d4792f7
AM		 7525 if (tls_mask == 0 && r_type == R_PPC64_TLS)
7526 {
7527 /* Check for toc tls entries. */
7528 char *toc_tls;
7529
7530 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7531 rel, input_bfd))
7532 return FALSE;
7533
7534 if (toc_tls)
7535 tls_mask = *toc_tls;
7536 }
7537 }
7538
7539 /* Check that tls relocs are used with tls syms, and non-tls
7540 relocs are used with non-tls syms. */
7541 if (r_symndx != 0
7542 && r_type != R_PPC64_NONE
7543 && (h == NULL
7544 || h->root.type == bfd_link_hash_defined
7545 || h->root.type == bfd_link_hash_defweak)
7546 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7547 {
7548 if (r_type == R_PPC64_TLS && tls_mask != 0)
7549 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7550 ;
7551 else
7552 (*_bfd_error_handler)
7553 (sym_type == STT_TLS
7554 ? _("%s(%s+0x%lx): %s used with TLS symbol %s")
7555 : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"),
7556 bfd_archive_filename (input_bfd),
7557 input_section->name,
7558 (long) rel->r_offset,
7559 ppc64_elf_howto_table[r_type]->name,
7560 sym_name);
411e1bfb
AM		 7561 }
7562
7563 /* Ensure reloc mapping code below stays sane. */
7564 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7565 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7566 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7567 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7568 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7569 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7570 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7571 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7572 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7573 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7574 abort ();
0d4792f7 7575
411e1bfb
AM		 7576 switch (r_type)
7577 {
7578 default:
411e1bfb
AM		 7579 break;
7580
7581 case R_PPC64_TOC16:
7582 case R_PPC64_TOC16_LO:
7583 case R_PPC64_TOC16_DS:
7584 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 7585 {
7586 /* Check for toc tls entries. */
7587 char *toc_tls;
951fd09b 7588 int retval;
411e1bfb 7589
0d4792f7
AM		 7590 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7591 rel, input_bfd);
951fd09b 7592 if (retval == 0)
411e1bfb
AM		 7593 return FALSE;
7594
7595 if (toc_tls)
7596 {
951fd09b 7597 tls_mask = *toc_tls;
411e1bfb
AM		 7598 if (r_type == R_PPC64_TOC16_DS
7599 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 7600 {
7601 if (tls_mask != 0
7602 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
7603 goto toctprel;
7604 }
411e1bfb 7605 else
951fd09b
AM		 7606 {
7607 /* If we found a GD reloc pair, then we might be
7608 doing a GD->IE transition. */
7609 if (retval == 2)
7610 {
7611 tls_gd = TLS_TPRELGD;
7612 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7613 goto tls_get_addr_check;
7614 }
7615 else if (retval == 3)
7616 {
7617 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7618 goto tls_get_addr_check;
7619 }
7620 }
411e1bfb
AM		 7621 }
7622 }
7623 break;
7624
7625 case R_PPC64_GOT_TPREL16_DS:
7626 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 7627 if (tls_mask != 0
7628 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 7629 {
81407a69 7630 toctprel:
411e1bfb
AM		 7631 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7632 insn &= 31 << 21;
7633 insn |= 0x3c0d0000; /* addis 0,13,0 */
7634 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7635 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 7636 if (toc_symndx != 0)
7637 {
7638 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7639 /* We changed the symbol. Start over in order to
7640 get h, sym, sec etc. right. */
7641 rel--;
7642 continue;
7643 }
7644 else
7645 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 7646 }
7647 break;
7648
7649 case R_PPC64_TLS:
951fd09b
AM		 7650 if (tls_mask != 0
7651 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 7652 {
50bc7936 7653 bfd_vma rtra;
411e1bfb 7654 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 7655 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 7656 == ((31 << 26) | (13 << 11)))
7657 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 7658 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 7659 == ((31 << 26) | (13 << 16)))
7660 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7661 else
7662 abort ();
7663 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7664 /* add -> addi. */
7665 insn = 14 << 26;
7666 else if ((insn & (31 << 1)) == 23 << 1
7667 && ((insn & (31 << 6)) < 14 << 6
7668 || ((insn & (31 << 6)) >= 16 << 6
7669 && (insn & (31 << 6)) < 24 << 6)))
7670 /* load and store indexed -> dform. */
7671 insn = (32 | ((insn >> 6) & 31)) << 26;
7672 else if ((insn & (31 << 1)) == 21 << 1
7673 && (insn & (0x1a << 6)) == 0)
7674 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7675 insn = (((58 | ((insn >> 6) & 4)) << 26)
7676 | ((insn >> 6) & 1));
7677 else if ((insn & (31 << 1)) == 21 << 1
7678 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7679 /* lwax -> lwa. */
7680 insn = (58 << 26) | 2;
7681 else
7682 abort ();
7683 insn |= rtra;
7684 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 7685 /* Was PPC64_TLS which sits on insn boundary, now
7686 PPC64_TPREL16_LO which is at insn+2. */
7687 rel->r_offset += 2;
0d4792f7
AM		 7688 r_type = R_PPC64_TPREL16_LO;
7689 if (toc_symndx != 0)
7690 {
7691 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7692 /* We changed the symbol. Start over in order to
7693 get h, sym, sec etc. right. */
7694 rel--;
7695 continue;
7696 }
7697 else
7698 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 7699 }
7700 break;
7701
411e1bfb
AM		 7702 case R_PPC64_GOT_TLSGD16_HI:
7703 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 7704 tls_gd = TLS_TPRELGD;
7705 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7706 goto tls_gdld_hi;
7707 break;
7708
411e1bfb
AM		 7709 case R_PPC64_GOT_TLSLD16_HI:
7710 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 7711 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 7712 {
951fd09b
AM		 7713 tls_gdld_hi:
7714 if ((tls_mask & tls_gd) != 0)
7715 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7716 + R_PPC64_GOT_TPREL16_DS);
7717 else
411e1bfb 7718 {
951fd09b
AM		 7719 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7720 rel->r_offset -= 2;
7721 r_type = R_PPC64_NONE;
411e1bfb 7722 }
951fd09b 7723 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 7724 }
7725 break;
7726
951fd09b
AM		 7727 case R_PPC64_GOT_TLSGD16:
7728 case R_PPC64_GOT_TLSGD16_LO:
7729 tls_gd = TLS_TPRELGD;
7730 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7731 goto tls_get_addr_check;
7732 break;
411e1bfb 7733
951fd09b
AM		 7734 case R_PPC64_GOT_TLSLD16:
7735 case R_PPC64_GOT_TLSLD16_LO:
7736 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7737 {
7738 tls_get_addr_check:
7739 if (rel + 1 < relend)
411e1bfb 7740 {
951fd09b
AM		 7741 enum elf_ppc64_reloc_type r_type2;
7742 unsigned long r_symndx2;
7743 struct elf_link_hash_entry *h2;
7744 bfd_vma insn1, insn2, insn3;
7745 bfd_vma offset;
7746
7747 /* The next instruction should be a call to
7748 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 7749 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 7750 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7751 if (r_symndx2 < symtab_hdr->sh_info
7752 || (r_type2 != R_PPC64_REL14
7753 && r_type2 != R_PPC64_REL14_BRTAKEN
7754 && r_type2 != R_PPC64_REL14_BRNTAKEN
7755 && r_type2 != R_PPC64_REL24))
7756 break;
7757
7758 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7759 while (h2->root.type == bfd_link_hash_indirect
7760 || h2->root.type == bfd_link_hash_warning)
7761 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7762 if (h2 == NULL || h2 != htab->tls_get_addr)
7763 break;
7764
7765 /* OK, it checks out. Replace the call. */
7766 offset = rel[1].r_offset;
7767 insn1 = bfd_get_32 (output_bfd,
7768 contents + rel->r_offset - 2);
7769 insn3 = bfd_get_32 (output_bfd,
7770 contents + offset + 4);
7771 if ((tls_mask & tls_gd) != 0)
411e1bfb 7772 {
951fd09b
AM		 7773 /* IE */
7774 insn1 &= (1 << 26) - (1 << 2);
7775 insn1 |= 58 << 26; /* ld */
7776 insn2 = 0x7c636a14; /* add 3,3,13 */
7777 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7778 if ((tls_mask & TLS_EXPLICIT) == 0)
7779 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7780 + R_PPC64_GOT_TPREL16_DS);
7781 else
7782 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7783 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 7784 }
7785 else
951fd09b
AM		 7786 {
7787 /* LE */
7788 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7789 insn2 = 0x38630000; /* addi 3,3,0 */
7790 if (tls_gd == 0)
7791 {
7792 /* Was an LD reloc. */
7793 r_symndx = 0;
e1918d23
AM		 7794 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7795 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 7796 }
0d4792f7
AM		 7797 else if (toc_symndx != 0)
7798 r_symndx = toc_symndx;
951fd09b
AM		 7799 r_type = R_PPC64_TPREL16_HA;
7800 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7801 rel[1].r_info = ELF64_R_INFO (r_symndx,
7802 R_PPC64_TPREL16_LO);
7803 rel[1].r_offset += 2;
7804 }
7805 if (insn3 == NOP
7806 || insn3 == CROR_151515 || insn3 == CROR_313131)
7807 {
7808 insn3 = insn2;
7809 insn2 = NOP;
7810 rel[1].r_offset += 4;
7811 }
7812 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7813 bfd_put_32 (output_bfd, insn2, contents + offset);
7814 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 7815 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 7816 {
0d4792f7
AM		 7817 /* We changed the symbol. Start over in order
7818 to get h, sym, sec etc. right. */
951fd09b
AM		 7819 rel--;
7820 continue;
7821 }
411e1bfb 7822 }
411e1bfb 7823 }
411e1bfb
AM		 7824 break;
7825
7826 case R_PPC64_DTPMOD64:
951fd09b
AM		 7827 if (rel + 1 < relend
7828 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7829 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 7830 {
951fd09b
AM		 7831 if ((tls_mask & TLS_GD) == 0)
7832 {
7833 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7834 if ((tls_mask & TLS_TPRELGD) != 0)
7835 r_type = R_PPC64_TPREL64;
7836 else
7837 {
4ce794b7 7838 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 7839 r_type = R_PPC64_NONE;
7840 }
7841 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7842 }
7843 }
7844 else
7845 {
7846 if ((tls_mask & TLS_LD) == 0)
411e1bfb 7847 {
4ce794b7 7848 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 7849 r_type = R_PPC64_NONE;
951fd09b 7850 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 7851 }
411e1bfb
AM		 7852 }
7853 break;
7854
7855 case R_PPC64_TPREL64:
951fd09b 7856 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 7857 {
7858 r_type = R_PPC64_NONE;
7859 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7860 }
7861 break;
7862 }
7863
7864 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 7865 insn = 0;
65f38f15 7866 switch (r_type)
5bd4f169
AM		 7867 {
7868 default:
65f38f15 7869 break;
5bd4f169 7870
65f38f15
AM		 7871 /* Branch taken prediction relocations. */
7872 case R_PPC64_ADDR14_BRTAKEN:
7873 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 7874 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7875 /* Fall thru. */
65f38f15 7876
86c76c7b 7877 /* Branch not taken prediction relocations. */
65f38f15
AM		 7878 case R_PPC64_ADDR14_BRNTAKEN:
7879 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 7880 insn |= bfd_get_32 (output_bfd,
7881 contents + rel->r_offset) & ~(0x01 << 21);
96e0dda4
AM		 7882 if (is_power4)
7883 {
7884 /* Set 'a' bit. This is 0b00010 in BO field for branch
7885 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7886 for branch on CTR insns (BO == 1a00t or 1a01t). */
7887 if ((insn & (0x14 << 21)) == (0x04 << 21))
7888 insn |= 0x02 << 21;
7889 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7890 insn |= 0x08 << 21;
7891 else
7892 break;
7893 }
65f38f15 7894 else
96e0dda4 7895 {
411e1bfb 7896 from = (rel->r_offset
805fc799
AM		 7897 + input_section->output_offset
7898 + input_section->output_section->vma);
7899
96e0dda4 7900 /* Invert 'y' bit if not the default. */
411e1bfb 7901 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
96e0dda4
AM		 7902 insn ^= 0x01 << 21;
7903 }
86c76c7b 7904
4ce794b7 7905 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
65f38f15 7906 break;
5bd4f169 7907
65f38f15 7908 case R_PPC64_REL24:
ad8e1ba5
AM		 7909 /* Calls to functions with a different TOC, such as calls to
7910 shared objects, need to alter the TOC pointer. This is
7911 done using a linkage stub. A REL24 branching to these
7912 linkage stubs needs to be followed by a nop, as the nop
7913 will be replaced with an instruction to restore the TOC
7914 base pointer. */
7915 if (((h != NULL
34814b9f 7916 && (fdh = &((struct ppc_link_hash_entry *) h)->oh->elf) != NULL
ad8e1ba5
AM		 7917 && fdh->plt.plist != NULL)
7918 || ((fdh = h, sec) != NULL
7919 && sec->output_section != NULL
7920 && (htab->stub_group[sec->id].toc_off
7921 != htab->stub_group[input_section->id].toc_off)))
721956f4 7922 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 7923 rel, htab)) != NULL
7924 && (stub_entry->stub_type == ppc_stub_plt_call
7925 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
7926 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 7927 {
b34976b6 7928 bfd_boolean can_plt_call = 0;
721956f4 7929
eea6121a 7930 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 7931 {
411e1bfb 7932 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
721956f4
AM		 7933 if (insn == NOP
7934 || insn == CROR_151515 || insn == CROR_313131)
41bd81ab 7935 {
4ce794b7 7936 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 7937 contents + rel->r_offset + 4);
721956f4 7938 can_plt_call = 1;
41bd81ab 7939 }
5bd4f169 7940 }
721956f4
AM		 7941
7942 if (!can_plt_call)
7943 {
ad8e1ba5
AM		 7944 if (stub_entry->stub_type == ppc_stub_plt_call)
7945 {
7946 /* If this is a plain branch rather than a branch
7947 and link, don't require a nop. */
7948 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7949 if ((insn & 1) == 0)
7950 can_plt_call = 1;
7951 }
6ab189d5
AM		 7952 else if (h != NULL
7953 && strcmp (h->root.root.string,
7954 ".__libc_start_main") == 0)
7955 {
7956 /* Allow crt1 branch to go via a toc adjusting stub. */
7957 can_plt_call = 1;
7958 }
ad8e1ba5
AM		 7959 else
7960 {
7961 if (strcmp (input_section->output_section->name,
7962 ".init") == 0
7963 || strcmp (input_section->output_section->name,
7964 ".fini") == 0)
7965 (*_bfd_error_handler)
7966 (_("%s(%s+0x%lx): automatic multiple TOCs "
7967 "not supported using your crt files; "
7968 "recompile with -mminimal-toc or upgrade gcc"),
7969 bfd_archive_filename (input_bfd),
7970 input_section->name,
7971 (long) rel->r_offset);
7972 else
7973 (*_bfd_error_handler)
7974 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7975 "does not allow automatic multiple TOCs; "
7976 "recompile with -mminimal-toc or "
7977 "-fno-optimize-sibling-calls, "
7978 "or make `%s' extern"),
7979 bfd_archive_filename (input_bfd),
7980 input_section->name,
7981 (long) rel->r_offset,
7982 sym_name,
7983 sym_name);
7984 bfd_set_error (bfd_error_bad_value);
7985 ret = FALSE;
7986 }
721956f4
AM		 7987 }
7988
7989 if (can_plt_call)
7990 {
7991 relocation = (stub_entry->stub_offset
7992 + stub_entry->stub_sec->output_offset
7993 + stub_entry->stub_sec->output_section->vma);
ad8e1ba5
AM		 7994 if (stub_entry->stub_type == ppc_stub_plt_call)
7995 unresolved_reloc = FALSE;
721956f4 7996 }
5bd4f169 7997 }
e86ce104 7998
06da1e8e
AM		 7999 /* NOP out calls to undefined weak functions.
8000 We can thus call a weak function without first
8001 checking whether the function is defined. */
e86ce104
AM		 8002 if (h != NULL
8003 && h->root.type == bfd_link_hash_undefweak
721956f4 8004 && relocation == 0
411e1bfb 8005 && rel->r_addend == 0)
e86ce104 8006 {
06da1e8e
AM		 8007 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
8008 continue;
e86ce104 8009 }
65f38f15
AM		 8010 break;
8011 }
5bd4f169 8012
65f38f15 8013 /* Set `addend'. */
411e1bfb
AM		 8014 tls_type = 0;
8015 addend = rel->r_addend;
65f38f15
AM		 8016 switch (r_type)
8017 {
8018 default:
8019 (*_bfd_error_handler)
8020 (_("%s: unknown relocation type %d for symbol %s"),
8021 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 8022
65f38f15 8023 bfd_set_error (bfd_error_bad_value);
b34976b6 8024 ret = FALSE;
65f38f15 8025 continue;
5bd4f169 8026
65f38f15 8027 case R_PPC64_NONE:
411e1bfb 8028 case R_PPC64_TLS:
04c9666a
AM		 8029 case R_PPC64_GNU_VTINHERIT:
8030 case R_PPC64_GNU_VTENTRY:
65f38f15 8031 continue;
5bd4f169
AM		 8032
8033 /* GOT16 relocations. Like an ADDR16 using the symbol's
8034 address in the GOT as relocation value instead of the
411e1bfb 8035 symbol's value itself. Also, create a GOT entry for the
5bd4f169 8036 symbol and put the symbol value there. */
411e1bfb
AM		 8037 case R_PPC64_GOT_TLSGD16:
8038 case R_PPC64_GOT_TLSGD16_LO:
8039 case R_PPC64_GOT_TLSGD16_HI:
8040 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 8041 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 8042 goto dogot;
8043
8044 case R_PPC64_GOT_TLSLD16:
8045 case R_PPC64_GOT_TLSLD16_LO:
8046 case R_PPC64_GOT_TLSLD16_HI:
8047 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 8048 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 8049 goto dogot;
8050
8051 case R_PPC64_GOT_TPREL16_DS:
8052 case R_PPC64_GOT_TPREL16_LO_DS:
8053 case R_PPC64_GOT_TPREL16_HI:
8054 case R_PPC64_GOT_TPREL16_HA:
8055 tls_type = TLS_TLS | TLS_TPREL;
8056 goto dogot;
8057
8058 case R_PPC64_GOT_DTPREL16_DS:
8059 case R_PPC64_GOT_DTPREL16_LO_DS:
8060 case R_PPC64_GOT_DTPREL16_HI:
8061 case R_PPC64_GOT_DTPREL16_HA:
8062 tls_type = TLS_TLS | TLS_DTPREL;
8063 goto dogot;
8064
65f38f15
AM		 8065 case R_PPC64_GOT16:
8066 case R_PPC64_GOT16_LO:
8067 case R_PPC64_GOT16_HI:
8068 case R_PPC64_GOT16_HA:
8069 case R_PPC64_GOT16_DS:
8070 case R_PPC64_GOT16_LO_DS:
411e1bfb 8071 dogot:
5bd4f169
AM		 8072 {
8073 /* Relocation is to the entry for this symbol in the global
8074 offset table. */
e717da7e 8075 asection *got;
d881513a 8076 bfd_vma *offp;
5bd4f169 8077 bfd_vma off;
d881513a 8078 unsigned long indx = 0;
65f38f15 8079
d881513a
AM		 8080 if (tls_type == (TLS_TLS | TLS_LD)
8081 && (h == NULL
8082 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
e717da7e 8083 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 8084 else
5bd4f169 8085 {
d881513a 8086 struct got_entry *ent;
5bd4f169 8087
d881513a
AM		 8088 if (h != NULL)
8089 {
8090 bfd_boolean dyn = htab->elf.dynamic_sections_created;
f4656909 8091 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
d881513a 8092 || (info->shared
586119b3 8093 && SYMBOL_REFERENCES_LOCAL (info, h)))
d881513a
AM		 8094 /* This is actually a static link, or it is a
8095 -Bsymbolic link and the symbol is defined
8096 locally, or the symbol was forced to be local
8097 because of a version file. */
8098 ;
8099 else
8100 {
8101 indx = h->dynindx;
8102 unresolved_reloc = FALSE;
8103 }
8104 ent = h->got.glist;
8105 }
411e1bfb 8106 else
5bd4f169 8107 {
d881513a
AM		 8108 if (local_got_ents == NULL)
8109 abort ();
8110 ent = local_got_ents[r_symndx];
5bd4f169 8111 }
d881513a
AM		 8112
8113 for (; ent != NULL; ent = ent->next)
8114 if (ent->addend == rel->r_addend
e717da7e 8115 && ent->owner == input_bfd
d881513a
AM		 8116 && ent->tls_type == tls_type)
8117 break;
8118 if (ent == NULL)
8119 abort ();
8120 offp = &ent->got.offset;
5bd4f169 8121 }
411e1bfb 8122
e717da7e
AM		 8123 got = ppc64_elf_tdata (input_bfd)->got;
8124 if (got == NULL)
8125 abort ();
8126
411e1bfb
AM		 8127 /* The offset must always be a multiple of 8. We use the
8128 least significant bit to record whether we have already
8129 processed this entry. */
d881513a 8130 off = *offp;
411e1bfb
AM		 8131 if ((off & 1) != 0)
8132 off &= ~1;
5bd4f169
AM		 8133 else
8134 {
411e1bfb
AM		 8135 /* Generate relocs for the dynamic linker, except in
8136 the case of TLSLD where we'll use one entry per
8137 module. */
e717da7e
AM		 8138 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
8139
d881513a 8140 *offp = off | 1;
4e795f50
AM		 8141 if ((info->shared || indx != 0)
8142 && (h == NULL
8143 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8144 || h->root.type != bfd_link_hash_undefweak))
5bd4f169 8145 {
e717da7e
AM		 8146 outrel.r_offset = (got->output_section->vma
8147 + got->output_offset
411e1bfb 8148 + off);
81407a69 8149 outrel.r_addend = rel->r_addend;
d881513a 8150 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 8151 {
411e1bfb 8152 outrel.r_addend = 0;
e515b051 8153 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 8154 if (tls_type == (TLS_TLS | TLS_GD))
8155 {
e717da7e
AM		 8156 loc = relgot->contents;
8157 loc += (relgot->reloc_count++
d881513a
AM		 8158 * sizeof (Elf64_External_Rela));
8159 bfd_elf64_swap_reloca_out (output_bfd,
8160 &outrel, loc);
e515b051 8161 outrel.r_offset += 8;
81407a69 8162 outrel.r_addend = rel->r_addend;
d881513a
AM		 8163 outrel.r_info
8164 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 8165 }
411e1bfb 8166 }
951fd09b 8167 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 8168 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 8169 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 8170 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
8171 else if (indx == 0)
81407a69
AM		 8172 {
8173 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
8174
8175 /* Write the .got section contents for the sake
8176 of prelink. */
e717da7e 8177 loc = got->contents + off;
23fbd6fa
JJ		 8178 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
8179 loc);
81407a69 8180 }
411e1bfb
AM		 8181 else
8182 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 8183
8184 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 8185 {
8186 outrel.r_addend += relocation;
8187 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 8188 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 8189 }
e717da7e
AM		 8190 loc = relgot->contents;
8191 loc += (relgot->reloc_count++
411e1bfb
AM		 8192 * sizeof (Elf64_External_Rela));
8193 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8194 }
8195
ad8e1ba5 8196 /* Init the .got section contents here if we're not
81407a69 8197 emitting a reloc. */
d881513a 8198 else
411e1bfb 8199 {
d881513a 8200 relocation += rel->r_addend;
7b609f53
AM		 8201 if (tls_type == (TLS_TLS | TLS_LD))
8202 relocation = 1;
8203 else if (tls_type != 0)
411e1bfb 8204 {
e1918d23 8205 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 8206 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 8207 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 8208
7b609f53
AM		 8209 if (tls_type == (TLS_TLS | TLS_GD))
8210 {
8211 bfd_put_64 (output_bfd, relocation,
e717da7e 8212 got->contents + off + 8);
7b609f53
AM		 8213 relocation = 1;
8214 }
411e1bfb 8215 }
7b609f53 8216
411e1bfb 8217 bfd_put_64 (output_bfd, relocation,
e717da7e 8218 got->contents + off);
5bd4f169
AM		 8219 }
8220 }
8221
65f38f15
AM		 8222 if (off >= (bfd_vma) -2)
8223 abort ();
8224
e717da7e 8225 relocation = got->output_offset + off;
65f38f15 8226
5bd4f169 8227 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 8228 addend = -TOC_BASE_OFF;
5bd4f169 8229 }
65f38f15
AM		 8230 break;
8231
8232 case R_PPC64_PLT16_HA:
8233 case R_PPC64_PLT16_HI:
8234 case R_PPC64_PLT16_LO:
8235 case R_PPC64_PLT32:
8236 case R_PPC64_PLT64:
8237 /* Relocation is to the entry for this symbol in the
8238 procedure linkage table. */
8239
8240 /* Resolve a PLT reloc against a local symbol directly,
8241 without using the procedure linkage table. */
8242 if (h == NULL)
8243 break;
8244
411e1bfb
AM		 8245 /* It's possible that we didn't make a PLT entry for this
8246 symbol. This happens when statically linking PIC code,
8247 or when using -Bsymbolic. Go find a match if there is a
8248 PLT entry. */
4ce794b7 8249 if (htab->plt != NULL)
65f38f15 8250 {
411e1bfb
AM		 8251 struct plt_entry *ent;
8252 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8253 if (ent->addend == rel->r_addend
8254 && ent->plt.offset != (bfd_vma) -1)
8255 {
4ce794b7
AM		 8256 relocation = (htab->plt->output_section->vma
8257 + htab->plt->output_offset
411e1bfb
AM		 8258 + ent->plt.offset);
8259 unresolved_reloc = FALSE;
8260 }
65f38f15 8261 }
65f38f15 8262 break;
5bd4f169 8263
0b13192e
AM		 8264 case R_PPC64_TOC:
8265 /* Relocation value is TOC base. */
8266 relocation = TOCstart;
8267 if (r_symndx == 0)
8268 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 8269 else if (unresolved_reloc)
8270 ;
8271 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 8272 relocation += htab->stub_group[sec->id].toc_off;
8273 else
8274 unresolved_reloc = TRUE;
8275 goto dodyn2;
8276
5bd4f169
AM		 8277 /* TOC16 relocs. We want the offset relative to the TOC base,
8278 which is the address of the start of the TOC plus 0x8000.
8279 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8280 in this order. */
65f38f15
AM		 8281 case R_PPC64_TOC16:
8282 case R_PPC64_TOC16_LO:
8283 case R_PPC64_TOC16_HI:
8284 case R_PPC64_TOC16_DS:
8285 case R_PPC64_TOC16_LO_DS:
8286 case R_PPC64_TOC16_HA:
ad8e1ba5 8287 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 8288 break;
8289
8290 /* Relocate against the beginning of the section. */
65f38f15
AM		 8291 case R_PPC64_SECTOFF:
8292 case R_PPC64_SECTOFF_LO:
8293 case R_PPC64_SECTOFF_HI:
8294 case R_PPC64_SECTOFF_DS:
8295 case R_PPC64_SECTOFF_LO_DS:
8296 case R_PPC64_SECTOFF_HA:
4ce794b7 8297 if (sec != NULL)
65f38f15 8298 addend -= sec->output_section->vma;
5bd4f169
AM		 8299 break;
8300
721956f4
AM		 8301 case R_PPC64_REL14:
8302 case R_PPC64_REL14_BRNTAKEN:
8303 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 8304 case R_PPC64_REL24:
8305 break;
8306
411e1bfb
AM		 8307 case R_PPC64_TPREL16:
8308 case R_PPC64_TPREL16_LO:
8309 case R_PPC64_TPREL16_HI:
8310 case R_PPC64_TPREL16_HA:
8311 case R_PPC64_TPREL16_DS:
8312 case R_PPC64_TPREL16_LO_DS:
8313 case R_PPC64_TPREL16_HIGHER:
8314 case R_PPC64_TPREL16_HIGHERA:
8315 case R_PPC64_TPREL16_HIGHEST:
8316 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 8317 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 8318 if (info->shared)
8319 /* The TPREL16 relocs shouldn't really be used in shared
8320 libs as they will result in DT_TEXTREL being set, but
8321 support them anyway. */
8322 goto dodyn;
8323 break;
8324
8325 case R_PPC64_DTPREL16:
8326 case R_PPC64_DTPREL16_LO:
8327 case R_PPC64_DTPREL16_HI:
8328 case R_PPC64_DTPREL16_HA:
8329 case R_PPC64_DTPREL16_DS:
8330 case R_PPC64_DTPREL16_LO_DS:
8331 case R_PPC64_DTPREL16_HIGHER:
8332 case R_PPC64_DTPREL16_HIGHERA:
8333 case R_PPC64_DTPREL16_HIGHEST:
8334 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 8335 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 8336 break;
8337
e515b051
AM		 8338 case R_PPC64_DTPMOD64:
8339 relocation = 1;
8340 addend = 0;
8341 goto dodyn;
8342
411e1bfb 8343 case R_PPC64_TPREL64:
e1918d23 8344 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 8345 goto dodyn;
8346
8347 case R_PPC64_DTPREL64:
e1918d23 8348 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 8349 /* Fall thru */
8350
65f38f15
AM		 8351 /* Relocations that may need to be propagated if this is a
8352 dynamic object. */
04c9666a 8353 case R_PPC64_REL30:
65f38f15
AM		 8354 case R_PPC64_REL32:
8355 case R_PPC64_REL64:
8356 case R_PPC64_ADDR14:
8357 case R_PPC64_ADDR14_BRNTAKEN:
8358 case R_PPC64_ADDR14_BRTAKEN:
8359 case R_PPC64_ADDR16:
8360 case R_PPC64_ADDR16_DS:
8361 case R_PPC64_ADDR16_HA:
8362 case R_PPC64_ADDR16_HI:
8363 case R_PPC64_ADDR16_HIGHER:
8364 case R_PPC64_ADDR16_HIGHERA:
8365 case R_PPC64_ADDR16_HIGHEST:
8366 case R_PPC64_ADDR16_HIGHESTA:
8367 case R_PPC64_ADDR16_LO:
8368 case R_PPC64_ADDR16_LO_DS:
8369 case R_PPC64_ADDR24:
65f38f15
AM		 8370 case R_PPC64_ADDR32:
8371 case R_PPC64_ADDR64:
8372 case R_PPC64_UADDR16:
8373 case R_PPC64_UADDR32:
8374 case R_PPC64_UADDR64:
ec338859
AM		 8375 /* r_symndx will be zero only for relocs against symbols
8376 from removed linkonce sections, or sections discarded by
8377 a linker script. */
411e1bfb 8378 dodyn:
5d1634d7
AM		 8379 if (r_symndx == 0)
8380 break;
8381 /* Fall thru. */
8382
0b13192e 8383 dodyn2:
5d1634d7 8384 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 8385 break;
8386
41bd81ab
AM		 8387 if (NO_OPD_RELOCS && is_opd)
8388 break;
8389
65f38f15 8390 if ((info->shared
4e795f50
AM		 8391 && (h == NULL
8392 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8393 || h->root.type != bfd_link_hash_undefweak)
411e1bfb 8394 && (MUST_BE_DYN_RELOC (r_type)
f6c52c13 8395 || !SYMBOL_CALLS_LOCAL (info, h)))
f4656909
AM		 8396 || (ELIMINATE_COPY_RELOCS
8397 && !info->shared
65f38f15
AM		 8398 && h != NULL
8399 && h->dynindx != -1
8400 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
58ac9f71
AM		 8401 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8402 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
65f38f15
AM		 8403 {
8404 Elf_Internal_Rela outrel;
b34976b6 8405 bfd_boolean skip, relocate;
65f38f15 8406 asection *sreloc;
947216bf 8407 bfd_byte *loc;
1cf1f670 8408 bfd_vma out_off;
65f38f15
AM		 8409
8410 /* When generating a dynamic object, these relocations
8411 are copied into the output file to be resolved at run
8412 time. */
8413
b34976b6
AM		 8414 skip = FALSE;
8415 relocate = FALSE;
65f38f15 8416
1cf1f670
AM		 8417 out_off = _bfd_elf_section_offset (output_bfd, info,
8418 input_section, rel->r_offset);
8419 if (out_off == (bfd_vma) -1)
b34976b6 8420 skip = TRUE;
1cf1f670 8421 else if (out_off == (bfd_vma) -2)
b34976b6 8422 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 8423 out_off += (input_section->output_section->vma
8424 + input_section->output_offset);
8425 outrel.r_offset = out_off;
411e1bfb 8426 outrel.r_addend = rel->r_addend;
65f38f15 8427
1cf1f670
AM		 8428 /* Optimize unaligned reloc use. */
8429 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
8430 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
8431 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
8432 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
8433 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
8434 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
8435 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
8436 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
8437 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
8438
65f38f15 8439 if (skip)
0bb2d96a 8440 memset (&outrel, 0, sizeof outrel);
f6c52c13 8441 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
0b13192e
AM		 8442 && !is_opd
8443 && r_type != R_PPC64_TOC)
0bb2d96a 8444 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
65f38f15
AM		 8445 else
8446 {
41bd81ab
AM		 8447 /* This symbol is local, or marked to become local,
8448 or this is an opd section reloc which must point
8449 at a local function. */
65f38f15 8450 outrel.r_addend += relocation;
e86ce104 8451 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 8452 {
3fad3c7c 8453 if (is_opd && h != NULL)
afbe61cf
AM		 8454 {
8455 /* Lie about opd entries. This case occurs
8456 when building shared libraries and we
8457 reference a function in another shared
3fad3c7c
AM		 8458 lib. The same thing happens for a weak
8459 definition in an application that's
8460 overridden by a strong definition in a
8461 shared lib. (I believe this is a generic
8462 bug in binutils handling of weak syms.)
8463 In these cases we won't use the opd
1e2f5b6e 8464 entry in this lib. */
b34976b6 8465 unresolved_reloc = FALSE;
afbe61cf 8466 }
65f38f15 8467 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 8468
8469 /* We need to relocate .opd contents for ld.so.
8470 Prelink also wants simple and consistent rules
8471 for relocs. This make all RELATIVE relocs have
8472 *r_offset equal to r_addend. */
8473 relocate = TRUE;
65f38f15
AM		 8474 }
8475 else
8476 {
8477 long indx = 0;
8478
41bd81ab 8479 if (bfd_is_abs_section (sec))
65f38f15
AM		 8480 ;
8481 else if (sec == NULL || sec->owner == NULL)
8482 {
8483 bfd_set_error (bfd_error_bad_value);
b34976b6 8484 return FALSE;
65f38f15
AM		 8485 }
8486 else
8487 {
8488 asection *osec;
8489
8490 osec = sec->output_section;
8491 indx = elf_section_data (osec)->dynindx;
8492
8493 /* We are turning this relocation into one
8494 against a section symbol, so subtract out
8495 the output section's address but not the
8496 offset of the input section in the output
8497 section. */
8498 outrel.r_addend -= osec->vma;
8499 }
8500
8501 outrel.r_info = ELF64_R_INFO (indx, r_type);
8502 }
8503 }
8504
8505 sreloc = elf_section_data (input_section)->sreloc;
8506 if (sreloc == NULL)
8507 abort ();
8508
947216bf
AM		 8509 loc = sreloc->contents;
8510 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 8511 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8512
8513 /* If this reloc is against an external symbol, it will
8514 be computed at runtime, so there's no need to do
81407a69
AM		 8515 anything now. However, for the sake of prelink ensure
8516 that the section contents are a known value. */
65f38f15 8517 if (! relocate)
81407a69
AM		 8518 {
8519 unresolved_reloc = FALSE;
8520 /* The value chosen here is quite arbitrary as ld.so
8521 ignores section contents except for the special
8522 case of .opd where the contents might be accessed
8523 before relocation. Choose zero, as that won't
8524 cause reloc overflow. */
8525 relocation = 0;
8526 addend = 0;
8527 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8528 to improve backward compatibility with older
8529 versions of ld. */
8530 if (r_type == R_PPC64_ADDR64)
8531 addend = outrel.r_addend;
8532 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 8533 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 8534 addend = (input_section->output_section->vma
8535 + input_section->output_offset
8536 + rel->r_offset);
81407a69 8537 }
65f38f15 8538 }
5bd4f169
AM		 8539 break;
8540
65f38f15
AM		 8541 case R_PPC64_COPY:
8542 case R_PPC64_GLOB_DAT:
8543 case R_PPC64_JMP_SLOT:
8544 case R_PPC64_RELATIVE:
8545 /* We shouldn't ever see these dynamic relocs in relocatable
8546 files. */
ae9a127f 8547 /* Fall through. */
65f38f15
AM		 8548
8549 case R_PPC64_PLTGOT16:
8550 case R_PPC64_PLTGOT16_DS:
8551 case R_PPC64_PLTGOT16_HA:
8552 case R_PPC64_PLTGOT16_HI:
8553 case R_PPC64_PLTGOT16_LO:
8554 case R_PPC64_PLTGOT16_LO_DS:
8555 case R_PPC64_PLTREL32:
8556 case R_PPC64_PLTREL64:
8557 /* These ones haven't been implemented yet. */
8558
8559 (*_bfd_error_handler)
7b609f53 8560 (_("%s: relocation %s is not supported for symbol %s."),
65f38f15 8561 bfd_archive_filename (input_bfd),
4ce794b7 8562 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 8563
8564 bfd_set_error (bfd_error_invalid_operation);
b34976b6 8565 ret = FALSE;
5bd4f169 8566 continue;
65f38f15 8567 }
5bd4f169 8568
65f38f15
AM		 8569 /* Do any further special processing. */
8570 switch (r_type)
8571 {
8572 default:
8573 break;
8574
8575 case R_PPC64_ADDR16_HA:
8576 case R_PPC64_ADDR16_HIGHERA:
8577 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 8578 case R_PPC64_GOT16_HA:
8579 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 8580 case R_PPC64_PLT16_HA:
8581 case R_PPC64_TOC16_HA:
8582 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 8583 case R_PPC64_TPREL16_HA:
8584 case R_PPC64_DTPREL16_HA:
8585 case R_PPC64_GOT_TLSGD16_HA:
8586 case R_PPC64_GOT_TLSLD16_HA:
8587 case R_PPC64_GOT_TPREL16_HA:
8588 case R_PPC64_GOT_DTPREL16_HA:
8589 case R_PPC64_TPREL16_HIGHER:
8590 case R_PPC64_TPREL16_HIGHERA:
8591 case R_PPC64_TPREL16_HIGHEST:
8592 case R_PPC64_TPREL16_HIGHESTA:
8593 case R_PPC64_DTPREL16_HIGHER:
8594 case R_PPC64_DTPREL16_HIGHERA:
8595 case R_PPC64_DTPREL16_HIGHEST:
8596 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 8597 /* It's just possible that this symbol is a weak symbol
8598 that's not actually defined anywhere. In that case,
8599 'sec' would be NULL, and we should leave the symbol
8600 alone (it will be set to zero elsewhere in the link). */
8601 if (sec != NULL)
e515b051
AM		 8602 /* Add 0x10000 if sign bit in 0:15 is set.
8603 Bits 0:15 are not used. */
8604 addend += 0x8000;
65f38f15
AM		 8605 break;
8606
8607 case R_PPC64_ADDR16_DS:
8608 case R_PPC64_ADDR16_LO_DS:
8609 case R_PPC64_GOT16_DS:
8610 case R_PPC64_GOT16_LO_DS:
8611 case R_PPC64_PLT16_LO_DS:
8612 case R_PPC64_SECTOFF_DS:
8613 case R_PPC64_SECTOFF_LO_DS:
8614 case R_PPC64_TOC16_DS:
8615 case R_PPC64_TOC16_LO_DS:
8616 case R_PPC64_PLTGOT16_DS:
8617 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 8618 case R_PPC64_GOT_TPREL16_DS:
8619 case R_PPC64_GOT_TPREL16_LO_DS:
8620 case R_PPC64_GOT_DTPREL16_DS:
8621 case R_PPC64_GOT_DTPREL16_LO_DS:
8622 case R_PPC64_TPREL16_DS:
8623 case R_PPC64_TPREL16_LO_DS:
8624 case R_PPC64_DTPREL16_DS:
8625 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 8626 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
8627 mask = 3;
8628 /* If this reloc is against an lq insn, then the value must be
8629 a multiple of 16. This is somewhat of a hack, but the
8630 "correct" way to do this by defining _DQ forms of all the
8631 _DS relocs bloats all reloc switches in this file. It
8632 doesn't seem to make much sense to use any of these relocs
8633 in data, so testing the insn should be safe. */
494dac0c 8634 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 8635 mask = 15;
8636 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 8637 {
8638 (*_bfd_error_handler)
adadcc0c 8639 (_("%s: error: relocation %s not a multiple of %d"),
65f38f15 8640 bfd_archive_filename (input_bfd),
4ce794b7 8641 ppc64_elf_howto_table[r_type]->name,
adadcc0c 8642 mask + 1);
65f38f15 8643 bfd_set_error (bfd_error_bad_value);
b34976b6 8644 ret = FALSE;
65f38f15
AM		 8645 continue;
8646 }
8647 break;
721956f4
AM		 8648
8649 case R_PPC64_REL14:
8650 case R_PPC64_REL14_BRNTAKEN:
8651 case R_PPC64_REL14_BRTAKEN:
8652 max_br_offset = 1 << 15;
8653 goto branch_check;
8654
8655 case R_PPC64_REL24:
8656 max_br_offset = 1 << 25;
8657
8658 branch_check:
ad8e1ba5
AM		 8659 /* If the branch is out of reach or the TOC register needs
8660 adjusting, then redirect the call to the local stub for
8661 this function. */
411e1bfb 8662 from = (rel->r_offset
721956f4
AM		 8663 + input_section->output_offset
8664 + input_section->output_section->vma);
ad8e1ba5
AM		 8665 if ((relocation + addend - from + max_br_offset >= 2 * max_br_offset
8666 || (sec != NULL
8667 && sec->output_section != NULL
8f3bab57 8668 && sec->id <= htab->top_id
ad8e1ba5
AM		 8669 && (htab->stub_group[sec->id].toc_off
8670 != htab->stub_group[input_section->id].toc_off)))
721956f4
AM		 8671 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8672 rel, htab)) != NULL)
8673 {
8674 /* Munge up the value and addend so that we call the stub
8675 rather than the procedure directly. */
8676 relocation = (stub_entry->stub_offset
8677 + stub_entry->stub_sec->output_offset
8678 + stub_entry->stub_sec->output_section->vma);
8679 addend = 0;
8680 }
8681 break;
5bd4f169
AM		 8682 }
8683
239e1f3a
AM		 8684 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8685 because such sections are not SEC_ALLOC and thus ld.so will
8686 not process them. */
65f38f15 8687 if (unresolved_reloc
239e1f3a 8688 && !((input_section->flags & SEC_DEBUGGING) != 0
65f38f15 8689 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
9c07fe7c
AM		 8690 {
8691 (*_bfd_error_handler)
7b609f53 8692 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
9c07fe7c
AM		 8693 bfd_archive_filename (input_bfd),
8694 bfd_get_section_name (input_bfd, input_section),
8695 (long) rel->r_offset,
7b609f53 8696 ppc64_elf_howto_table[(int) r_type]->name,
9c07fe7c 8697 h->root.root.string);
b34976b6 8698 ret = FALSE;
9c07fe7c 8699 }
5bd4f169 8700
65f38f15 8701 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 8702 input_bfd,
8703 input_section,
8704 contents,
411e1bfb 8705 rel->r_offset,
5bd4f169
AM		 8706 relocation,
8707 addend);
8708
ef60b7ff 8709 if (r != bfd_reloc_ok)
5bd4f169 8710 {
cd27b276
AM		 8711 if (sym_name == NULL)
8712 sym_name = "(null)";
8713 if (r == bfd_reloc_overflow)
5bd4f169 8714 {
cd27b276
AM		 8715 if (warned)
8716 continue;
8717 if (h != NULL
8718 && h->root.type == bfd_link_hash_undefweak
4ce794b7 8719 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 8720 {
8721 /* Assume this is a call protected by other code that
8722 detects the symbol is undefined. If this is the case,
8723 we can safely ignore the overflow. If not, the
8724 program is hosed anyway, and a little warning isn't
8725 going to help. */
8726
8727 continue;
8728 }
8729
ef60b7ff 8730 if (!((*info->callbacks->reloc_overflow)
4ce794b7 8731 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
411e1bfb 8732 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 8733 return FALSE;
ef60b7ff
AM		 8734 }
8735 else
8736 {
8737 (*_bfd_error_handler)
7b609f53 8738 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
ef60b7ff
AM		 8739 bfd_archive_filename (input_bfd),
8740 bfd_get_section_name (input_bfd, input_section),
7b609f53 8741 (long) rel->r_offset,
4ce794b7 8742 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 8743 sym_name,
8744 (int) r);
b34976b6 8745 ret = FALSE;
ef60b7ff 8746 }
5bd4f169 8747 }
5bd4f169
AM		 8748 }
8749
5bd4f169
AM		 8750 return ret;
8751}
8752
754021d0
AM		 8753/* Adjust the value of any local symbols in opd sections. */
8754
8755static bfd_boolean
8756ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
8757 const char *name ATTRIBUTE_UNUSED,
8758 Elf_Internal_Sym *elfsym,
8759 asection *input_sec,
8760 struct elf_link_hash_entry *h)
8761{
4025353c 8762 long *opd_adjust, adjust;
754021d0
AM		 8763 bfd_vma value;
8764
4025353c
AM		 8765 if (h != NULL)
8766 return TRUE;
8767
8768 opd_adjust = get_opd_info (input_sec);
8769 if (opd_adjust == NULL)
754021d0
AM		 8770 return TRUE;
8771
8772 value = elfsym->st_value - input_sec->output_offset;
8773 if (!info->relocatable)
8774 value -= input_sec->output_section->vma;
8775
4025353c
AM		 8776 adjust = opd_adjust[value / 24];
8777 if (adjust == -1)
8778 elfsym->st_value = 0;
8779 else
8780 elfsym->st_value += adjust;
754021d0
AM		 8781 return TRUE;
8782}
8783
5bd4f169
AM		 8784/* Finish up dynamic symbol handling. We set the contents of various
8785 dynamic sections here. */
8786
b34976b6 8787static bfd_boolean
4ce794b7
AM		 8788ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
8789 struct bfd_link_info *info,
8790 struct elf_link_hash_entry *h,
8791 Elf_Internal_Sym *sym)
5bd4f169 8792{
65f38f15 8793 struct ppc_link_hash_table *htab;
5bd4f169
AM		 8794 bfd *dynobj;
8795
65f38f15
AM		 8796 htab = ppc_hash_table (info);
8797 dynobj = htab->elf.dynobj;
5bd4f169 8798
411e1bfb 8799 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
5bd4f169 8800 {
411e1bfb 8801 struct plt_entry *ent;
65f38f15 8802 Elf_Internal_Rela rela;
947216bf 8803 bfd_byte *loc;
5bd4f169 8804
411e1bfb
AM		 8805 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8806 if (ent->plt.offset != (bfd_vma) -1)
8807 {
8808 /* This symbol has an entry in the procedure linkage
8809 table. Set it up. */
5bd4f169 8810
4ce794b7
AM		 8811 if (htab->plt == NULL
8812 || htab->relplt == NULL
8813 || htab->glink == NULL)
411e1bfb 8814 abort ();
5bd4f169 8815
411e1bfb
AM		 8816 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8817 fill in the PLT entry. */
4ce794b7
AM		 8818 rela.r_offset = (htab->plt->output_section->vma
8819 + htab->plt->output_offset
411e1bfb
AM		 8820 + ent->plt.offset);
8821 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8822 rela.r_addend = ent->addend;
5bd4f169 8823
4ce794b7 8824 loc = htab->relplt->contents;
411e1bfb
AM		 8825 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8826 * sizeof (Elf64_External_Rela));
8827 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8828 }
5bd4f169
AM		 8829 }
8830
8831 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8832 {
5bd4f169 8833 Elf_Internal_Rela rela;
947216bf 8834 bfd_byte *loc;
5bd4f169 8835
65f38f15 8836 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 8837
65f38f15
AM		 8838 if (h->dynindx == -1
8839 || (h->root.type != bfd_link_hash_defined
8840 && h->root.type != bfd_link_hash_defweak)
4ce794b7 8841 || htab->relbss == NULL)
65f38f15 8842 abort ();
5bd4f169
AM		 8843
8844 rela.r_offset = (h->root.u.def.value
8845 + h->root.u.def.section->output_section->vma
8846 + h->root.u.def.section->output_offset);
8847 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8848 rela.r_addend = 0;
4ce794b7
AM		 8849 loc = htab->relbss->contents;
8850 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 8851 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 8852 }
8853
5bd4f169
AM		 8854 /* Mark some specially defined symbols as absolute. */
8855 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8856 sym->st_shndx = SHN_ABS;
8857
b34976b6 8858 return TRUE;
5bd4f169
AM		 8859}
8860
65f38f15
AM		 8861/* Used to decide how to sort relocs in an optimal manner for the
8862 dynamic linker, before writing them out. */
8863
8864static enum elf_reloc_type_class
4ce794b7 8865ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 8866{
04c9666a 8867 enum elf_ppc64_reloc_type r_type;
a33d1f77 8868
4ce794b7 8869 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 8870 switch (r_type)
65f38f15
AM		 8871 {
8872 case R_PPC64_RELATIVE:
8873 return reloc_class_relative;
8874 case R_PPC64_JMP_SLOT:
8875 return reloc_class_plt;
8876 case R_PPC64_COPY:
8877 return reloc_class_copy;
8878 default:
8879 return reloc_class_normal;
8880 }
8881}
8882
5bd4f169
AM		 8883/* Finish up the dynamic sections. */
8884
b34976b6 8885static bfd_boolean
4ce794b7
AM		 8886ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
8887 struct bfd_link_info *info)
5bd4f169 8888{
65f38f15
AM		 8889 struct ppc_link_hash_table *htab;
8890 bfd *dynobj;
5bd4f169 8891 asection *sdyn;
5bd4f169 8892
65f38f15
AM		 8893 htab = ppc_hash_table (info);
8894 dynobj = htab->elf.dynobj;
5bd4f169
AM		 8895 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8896
65f38f15 8897 if (htab->elf.dynamic_sections_created)
5bd4f169 8898 {
5bd4f169
AM		 8899 Elf64_External_Dyn *dyncon, *dynconend;
8900
4ce794b7 8901 if (sdyn == NULL || htab->got == NULL)
65f38f15 8902 abort ();
5bd4f169
AM		 8903
8904 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 8905 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 8906 for (; dyncon < dynconend; dyncon++)
8907 {
8908 Elf_Internal_Dyn dyn;
19397422 8909 asection *s;
5bd4f169
AM		 8910
8911 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8912
8913 switch (dyn.d_tag)
8914 {
65f38f15
AM		 8915 default:
8916 continue;
5bd4f169 8917
5d1634d7 8918 case DT_PPC64_GLINK:
4ce794b7 8919 s = htab->glink;
6348e046 8920 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 8921 /* We stupidly defined DT_PPC64_GLINK to be the start
8922 of glink rather than the first entry point, which is
8923 what ld.so needs, and now have a bigger stub to
8924 support automatic multiple TOCs. */
8925 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 8926 break;
8927
19397422
AM		 8928 case DT_PPC64_OPD:
8929 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 8930 if (s == NULL)
8931 continue;
8932 dyn.d_un.d_ptr = s->vma;
19397422
AM		 8933 break;
8934
8935 case DT_PPC64_OPDSZ:
8936 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 8937 if (s == NULL)
8938 continue;
eea6121a 8939 dyn.d_un.d_val = s->size;
19397422
AM		 8940 break;
8941
65f38f15 8942 case DT_PLTGOT:
4ce794b7 8943 s = htab->plt;
6348e046 8944 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 8945 break;
8946
8947 case DT_JMPREL:
4ce794b7 8948 s = htab->relplt;
6348e046 8949 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 8950 break;
5bd4f169 8951
65f38f15 8952 case DT_PLTRELSZ:
eea6121a 8953 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 8954 break;
8955
8956 case DT_RELASZ:
8957 /* Don't count procedure linkage table relocs in the
8958 overall reloc count. */
4ce794b7 8959 s = htab->relplt;
6348e046
AM		 8960 if (s == NULL)
8961 continue;
eea6121a 8962 dyn.d_un.d_val -= s->size;
6348e046
AM		 8963 break;
8964
8965 case DT_RELA:
8966 /* We may not be using the standard ELF linker script.
8967 If .rela.plt is the first .rela section, we adjust
8968 DT_RELA to not include it. */
4ce794b7 8969 s = htab->relplt;
6348e046
AM		 8970 if (s == NULL)
8971 continue;
8972 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8973 continue;
eea6121a 8974 dyn.d_un.d_ptr += s->size;
65f38f15 8975 break;
5bd4f169 8976 }
5bd4f169 8977
65f38f15 8978 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 8979 }
5bd4f169
AM		 8980 }
8981
eea6121a 8982 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 8983 {
8984 /* Fill in the first entry in the global offset table.
8985 We use it to hold the link-time TOCbase. */
8986 bfd_put_64 (output_bfd,
60ee0d4a 8987 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 8988 htab->got->contents);
5d1634d7
AM		 8989
8990 /* Set .got entry size. */
4ce794b7 8991 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 8992 }
8993
eea6121a 8994 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 8995 {
8996 /* Set .plt entry size. */
4ce794b7 8997 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 8998 = PLT_ENTRY_SIZE;
8999 }
9000
e717da7e
AM		 9001 /* We need to handle writing out multiple GOT sections ourselves,
9002 since we didn't add them to DYNOBJ. */
9003 while ((dynobj = dynobj->link_next) != NULL)
9004 {
9005 asection *s;
9006 s = ppc64_elf_tdata (dynobj)->got;
9007 if (s != NULL
eea6121a 9008 && s->size != 0
e717da7e
AM		 9009 && s->output_section != bfd_abs_section_ptr
9010 && !bfd_set_section_contents (output_bfd, s->output_section,
9011 s->contents, s->output_offset,
eea6121a 9012 s->size))
e717da7e
AM		 9013 return FALSE;
9014 s = ppc64_elf_tdata (dynobj)->relgot;
9015 if (s != NULL
eea6121a 9016 && s->size != 0
e717da7e
AM		 9017 && s->output_section != bfd_abs_section_ptr
9018 && !bfd_set_section_contents (output_bfd, s->output_section,
9019 s->contents, s->output_offset,
eea6121a 9020 s->size))
e717da7e
AM		 9021 return FALSE;
9022 }
f6c52c13 9023
b34976b6 9024 return TRUE;
5bd4f169
AM		 9025}
9026
5bd4f169 9027#include "elf64-target.h"
GDB Binutils - Deliverables
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