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(ppc64_elf_check_relocs): Remove unnecessary SEC_ALLOC check.
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3eb128b2 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
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 **);
2441e016
AM		 38static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 54static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 56
ad8e1ba5
AM		 57#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58#define TARGET_LITTLE_NAME "elf64-powerpcle"
59#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60#define TARGET_BIG_NAME "elf64-powerpc"
61#define ELF_ARCH bfd_arch_powerpc
62#define ELF_MACHINE_CODE EM_PPC64
63#define ELF_MAXPAGESIZE 0x10000
64#define elf_info_to_howto ppc64_elf_info_to_howto
65
66#define elf_backend_want_got_sym 0
67#define elf_backend_want_plt_sym 0
68#define elf_backend_plt_alignment 3
69#define elf_backend_plt_not_loaded 1
70#define elf_backend_got_symbol_offset 0
71#define elf_backend_got_header_size 8
ad8e1ba5
AM		 72#define elf_backend_can_gc_sections 1
73#define elf_backend_can_refcount 1
74#define elf_backend_rela_normal 1
75
e717da7e 76#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 77#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 82#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 83
84#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 85#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 87#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 89#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d
AM		 90#define elf_backend_check_directives ppc64_elf_check_directives
91#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5
AM		 92#define elf_backend_check_relocs ppc64_elf_check_relocs
93#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96#define elf_backend_hide_symbol ppc64_elf_hide_symbol
97#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99#define elf_backend_relocate_section ppc64_elf_relocate_section
100#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
101#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
102#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 103#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
2f89ff8d 104#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 105
5bd4f169
AM		 106/* The name of the dynamic interpreter. This is put in the .interp
107 section. */
108#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
109
110/* The size in bytes of an entry in the procedure linkage table. */
111#define PLT_ENTRY_SIZE 24
112
113/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 114#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 115
116/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 117#define TOC_BASE_OFF 0x8000
118
119/* Offset of tp and dtp pointers from start of TLS block. */
120#define TP_OFFSET 0x7000
121#define DTP_OFFSET 0x8000
5bd4f169 122
ad8e1ba5
AM		 123/* .plt call stub instructions. The normal stub is like this, but
124 sometimes the .plt entry crosses a 64k boundary and we need to
125 insert an addis to adjust r12. */
126#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 127#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
128#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
129#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
130#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
131#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
132 /* ld %r11,xxx+16@l(%r12) */
133#define BCTR 0x4e800420 /* bctr */
134
5d1634d7 135
ad8e1ba5
AM		 136#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
137#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
138
139#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
140
141/* glink call stub instructions. We enter with the index in R0, and the
142 address of glink entry in CTR. From that, we can calculate PLT0. */
143#define GLINK_CALL_STUB_SIZE (16*4)
144#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
145#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
146#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
147#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
148#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
149#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
150#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
151 /* sub %r12,%r12,%r11 */
152#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
153#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
154 /* ld %r11,xxx@l(%r12) */
155#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
156 /* ld %r2,8(%r12) */
157 /* mtctr %r11 */
158 /* ld %r11,16(%r12) */
159 /* bctr */
5d1634d7
AM		 160
161/* Pad with this. */
162#define NOP 0x60000000
163
721956f4
AM		 164/* Some other nops. */
165#define CROR_151515 0x4def7b82
166#define CROR_313131 0x4ffffb82
167
cedb70c5 168/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 169#define LI_R0_0 0x38000000 /* li %r0,0 */
170#define B_DOT 0x48000000 /* b . */
171
172/* After that, we need two instructions to load the index, followed by
173 a branch. */
174#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 175#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 176
deb0e272
AM		 177/* Instructions used by the save and restore reg functions. */
178#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
179#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
180#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
181#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 182#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
183#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 184#define LI_R12_0 0x39800000 /* li %r12,0 */
185#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
186#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
187#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 188#define BLR 0x4e800020 /* blr */
189
41bd81ab
AM		 190/* Since .opd is an array of descriptors and each entry will end up
191 with identical R_PPC64_RELATIVE relocs, there is really no need to
192 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 193 relocate .opd without reloc entries. */
41bd81ab
AM		 194#ifndef NO_OPD_RELOCS
195#define NO_OPD_RELOCS 0
196#endif
5bd4f169 197\f
f5e87a1d 198#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 199
5bd4f169 200/* Relocation HOWTO's. */
04c9666a 201static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 202
203static reloc_howto_type ppc64_elf_howto_raw[] = {
204 /* This reloc does nothing. */
205 HOWTO (R_PPC64_NONE, /* type */
206 0, /* rightshift */
411e1bfb
AM		 207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 32, /* bitsize */
b34976b6 209 FALSE, /* pc_relative */
5bd4f169 210 0, /* bitpos */
f5e87a1d 211 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC64_NONE", /* name */
b34976b6 214 FALSE, /* partial_inplace */
d006db6c 215 0, /* src_mask */
5bd4f169 216 0, /* dst_mask */
b34976b6 217 FALSE), /* pcrel_offset */
5bd4f169
AM		 218
219 /* A standard 32 bit relocation. */
220 HOWTO (R_PPC64_ADDR32, /* type */
221 0, /* rightshift */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
223 32, /* bitsize */
b34976b6 224 FALSE, /* pc_relative */
5bd4f169
AM		 225 0, /* bitpos */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR32", /* name */
b34976b6 229 FALSE, /* partial_inplace */
5bd4f169
AM		 230 0, /* src_mask */
231 0xffffffff, /* dst_mask */
b34976b6 232 FALSE), /* pcrel_offset */
5bd4f169
AM		 233
234 /* An absolute 26 bit branch; the lower two bits must be zero.
235 FIXME: we don't check that, we just clear them. */
236 HOWTO (R_PPC64_ADDR24, /* type */
237 0, /* rightshift */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
239 26, /* bitsize */
b34976b6 240 FALSE, /* pc_relative */
5bd4f169
AM		 241 0, /* bitpos */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR24", /* name */
b34976b6 245 FALSE, /* partial_inplace */
d006db6c 246 0, /* src_mask */
f5e87a1d 247 0x03fffffc, /* dst_mask */
b34976b6 248 FALSE), /* pcrel_offset */
5bd4f169
AM		 249
250 /* A standard 16 bit relocation. */
251 HOWTO (R_PPC64_ADDR16, /* type */
252 0, /* rightshift */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
b34976b6 255 FALSE, /* pc_relative */
5bd4f169
AM		 256 0, /* bitpos */
257 complain_overflow_bitfield, /* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC64_ADDR16", /* name */
b34976b6 260 FALSE, /* partial_inplace */
5bd4f169
AM		 261 0, /* src_mask */
262 0xffff, /* dst_mask */
b34976b6 263 FALSE), /* pcrel_offset */
5bd4f169
AM		 264
265 /* A 16 bit relocation without overflow. */
266 HOWTO (R_PPC64_ADDR16_LO, /* type */
267 0, /* rightshift */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
269 16, /* bitsize */
b34976b6 270 FALSE, /* pc_relative */
5bd4f169
AM		 271 0, /* bitpos */
272 complain_overflow_dont,/* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC64_ADDR16_LO", /* name */
b34976b6 275 FALSE, /* partial_inplace */
5bd4f169
AM		 276 0, /* src_mask */
277 0xffff, /* dst_mask */
b34976b6 278 FALSE), /* pcrel_offset */
5bd4f169
AM		 279
280 /* Bits 16-31 of an address. */
281 HOWTO (R_PPC64_ADDR16_HI, /* type */
282 16, /* rightshift */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
b34976b6 285 FALSE, /* pc_relative */
5bd4f169
AM		 286 0, /* bitpos */
287 complain_overflow_dont, /* complain_on_overflow */
288 bfd_elf_generic_reloc, /* special_function */
289 "R_PPC64_ADDR16_HI", /* name */
b34976b6 290 FALSE, /* partial_inplace */
5bd4f169
AM		 291 0, /* src_mask */
292 0xffff, /* dst_mask */
b34976b6 293 FALSE), /* pcrel_offset */
5bd4f169
AM		 294
295 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
296 bits, treated as a signed number, is negative. */
297 HOWTO (R_PPC64_ADDR16_HA, /* type */
298 16, /* rightshift */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
300 16, /* bitsize */
b34976b6 301 FALSE, /* pc_relative */
5bd4f169
AM		 302 0, /* bitpos */
303 complain_overflow_dont, /* complain_on_overflow */
805fc799 304 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 305 "R_PPC64_ADDR16_HA", /* name */
b34976b6 306 FALSE, /* partial_inplace */
5bd4f169
AM		 307 0, /* src_mask */
308 0xffff, /* dst_mask */
b34976b6 309 FALSE), /* pcrel_offset */
5bd4f169
AM		 310
311 /* An absolute 16 bit branch; the lower two bits must be zero.
312 FIXME: we don't check that, we just clear them. */
313 HOWTO (R_PPC64_ADDR14, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
5bd4f169
AM		 318 0, /* bitpos */
319 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 320 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 321 "R_PPC64_ADDR14", /* name */
b34976b6 322 FALSE, /* partial_inplace */
d006db6c 323 0, /* src_mask */
f5e87a1d 324 0x0000fffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
5bd4f169
AM		 326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is expected to be taken. The lower two
329 bits must be zero. */
330 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
5bd4f169
AM		 335 0, /* bitpos */
336 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 337 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 338 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 339 FALSE, /* partial_inplace */
d006db6c 340 0, /* src_mask */
f5e87a1d 341 0x0000fffc, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
5bd4f169
AM		 343
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is not expected to be taken. The lower
346 two bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 16, /* bitsize */
b34976b6 351 FALSE, /* pc_relative */
5bd4f169
AM		 352 0, /* bitpos */
353 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 354 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 355 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 356 FALSE, /* partial_inplace */
d006db6c 357 0, /* src_mask */
f5e87a1d 358 0x0000fffc, /* dst_mask */
b34976b6 359 FALSE), /* pcrel_offset */
5bd4f169
AM		 360
361 /* A relative 26 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC64_REL24, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 26, /* bitsize */
b34976b6 366 TRUE, /* pc_relative */
5bd4f169
AM		 367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
2441e016 369 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 370 "R_PPC64_REL24", /* name */
b34976b6 371 FALSE, /* partial_inplace */
d006db6c 372 0, /* src_mask */
f5e87a1d 373 0x03fffffc, /* dst_mask */
b34976b6 374 TRUE), /* pcrel_offset */
5bd4f169
AM		 375
376 /* A relative 16 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL14, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 TRUE, /* pc_relative */
5bd4f169
AM		 382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
2441e016 384 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 385 "R_PPC64_REL14", /* name */
b34976b6 386 FALSE, /* partial_inplace */
d006db6c 387 0, /* src_mask */
f5e87a1d 388 0x0000fffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
5bd4f169
AM		 390
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is expected to be taken. The lower two bits must be
393 zero. */
394 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
b34976b6 398 TRUE, /* pc_relative */
5bd4f169
AM		 399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
805fc799 401 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 402 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 403 FALSE, /* partial_inplace */
d006db6c 404 0, /* src_mask */
f5e87a1d 405 0x0000fffc, /* dst_mask */
b34976b6 406 TRUE), /* pcrel_offset */
5bd4f169
AM		 407
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is not expected to be taken. The lower two bits must
410 be zero. */
411 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
412 0, /* rightshift */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
414 16, /* bitsize */
b34976b6 415 TRUE, /* pc_relative */
5bd4f169
AM		 416 0, /* bitpos */
417 complain_overflow_signed, /* complain_on_overflow */
805fc799 418 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 419 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 420 FALSE, /* partial_inplace */
d006db6c 421 0, /* src_mask */
f5e87a1d 422 0x0000fffc, /* dst_mask */
b34976b6 423 TRUE), /* pcrel_offset */
5bd4f169
AM		 424
425 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
426 symbol. */
427 HOWTO (R_PPC64_GOT16, /* type */
428 0, /* rightshift */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
430 16, /* bitsize */
b34976b6 431 FALSE, /* pc_relative */
5bd4f169
AM		 432 0, /* bitpos */
433 complain_overflow_signed, /* complain_on_overflow */
805fc799 434 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 435 "R_PPC64_GOT16", /* name */
b34976b6 436 FALSE, /* partial_inplace */
5bd4f169
AM		 437 0, /* src_mask */
438 0xffff, /* dst_mask */
b34976b6 439 FALSE), /* pcrel_offset */
5bd4f169
AM		 440
441 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
442 the symbol. */
443 HOWTO (R_PPC64_GOT16_LO, /* type */
444 0, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
b34976b6 447 FALSE, /* pc_relative */
5bd4f169
AM		 448 0, /* bitpos */
449 complain_overflow_dont, /* complain_on_overflow */
805fc799 450 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 451 "R_PPC64_GOT16_LO", /* name */
b34976b6 452 FALSE, /* partial_inplace */
5bd4f169
AM		 453 0, /* src_mask */
454 0xffff, /* dst_mask */
b34976b6 455 FALSE), /* pcrel_offset */
5bd4f169
AM		 456
457 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
458 the symbol. */
459 HOWTO (R_PPC64_GOT16_HI, /* type */
460 16, /* rightshift */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
462 16, /* bitsize */
b34976b6 463 FALSE, /* pc_relative */
5bd4f169
AM		 464 0, /* bitpos */
465 complain_overflow_dont,/* complain_on_overflow */
805fc799 466 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 467 "R_PPC64_GOT16_HI", /* name */
b34976b6 468 FALSE, /* partial_inplace */
5bd4f169
AM		 469 0, /* src_mask */
470 0xffff, /* dst_mask */
b34976b6 471 FALSE), /* pcrel_offset */
5bd4f169
AM		 472
473 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
474 the symbol. */
475 HOWTO (R_PPC64_GOT16_HA, /* type */
476 16, /* rightshift */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
b34976b6 479 FALSE, /* pc_relative */
5bd4f169
AM		 480 0, /* bitpos */
481 complain_overflow_dont,/* complain_on_overflow */
805fc799 482 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 483 "R_PPC64_GOT16_HA", /* name */
b34976b6 484 FALSE, /* partial_inplace */
5bd4f169
AM		 485 0, /* src_mask */
486 0xffff, /* dst_mask */
b34976b6 487 FALSE), /* pcrel_offset */
5bd4f169
AM		 488
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC64_COPY, /* type */
495 0, /* rightshift */
f5e87a1d
AM		 496 0, /* this one is variable size */
497 0, /* bitsize */
b34976b6 498 FALSE, /* pc_relative */
5bd4f169 499 0, /* bitpos */
f5e87a1d
AM		 500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 502 "R_PPC64_COPY", /* name */
b34976b6 503 FALSE, /* partial_inplace */
5bd4f169
AM		 504 0, /* src_mask */
505 0, /* dst_mask */
b34976b6 506 FALSE), /* pcrel_offset */
5bd4f169
AM		 507
508 /* Like R_PPC64_ADDR64, but used when setting global offset table
509 entries. */
510 HOWTO (R_PPC64_GLOB_DAT, /* type */
511 0, /* rightshift */
512 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
513 64, /* bitsize */
b34976b6 514 FALSE, /* pc_relative */
5bd4f169
AM		 515 0, /* bitpos */
516 complain_overflow_dont, /* complain_on_overflow */
805fc799 517 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 518 "R_PPC64_GLOB_DAT", /* name */
b34976b6 519 FALSE, /* partial_inplace */
5bd4f169 520 0, /* src_mask */
f5e87a1d 521 ONES (64), /* dst_mask */
b34976b6 522 FALSE), /* pcrel_offset */
5bd4f169
AM		 523
524 /* Created by the link editor. Marks a procedure linkage table
525 entry for a symbol. */
526 HOWTO (R_PPC64_JMP_SLOT, /* type */
527 0, /* rightshift */
528 0, /* size (0 = byte, 1 = short, 2 = long) */
529 0, /* bitsize */
b34976b6 530 FALSE, /* pc_relative */
5bd4f169
AM		 531 0, /* bitpos */
532 complain_overflow_dont, /* complain_on_overflow */
805fc799 533 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 534 "R_PPC64_JMP_SLOT", /* name */
b34976b6 535 FALSE, /* partial_inplace */
5bd4f169
AM		 536 0, /* src_mask */
537 0, /* dst_mask */
b34976b6 538 FALSE), /* pcrel_offset */
5bd4f169
AM		 539
540 /* Used only by the dynamic linker. When the object is run, this
541 doubleword64 is set to the load address of the object, plus the
542 addend. */
543 HOWTO (R_PPC64_RELATIVE, /* type */
544 0, /* rightshift */
545 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
546 64, /* bitsize */
b34976b6 547 FALSE, /* pc_relative */
5bd4f169
AM		 548 0, /* bitpos */
549 complain_overflow_dont, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC64_RELATIVE", /* name */
b34976b6 552 FALSE, /* partial_inplace */
5bd4f169 553 0, /* src_mask */
f5e87a1d 554 ONES (64), /* dst_mask */
b34976b6 555 FALSE), /* pcrel_offset */
5bd4f169
AM		 556
557 /* Like R_PPC64_ADDR32, but may be unaligned. */
558 HOWTO (R_PPC64_UADDR32, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 32, /* bitsize */
b34976b6 562 FALSE, /* pc_relative */
5bd4f169
AM		 563 0, /* bitpos */
564 complain_overflow_bitfield, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC64_UADDR32", /* name */
b34976b6 567 FALSE, /* partial_inplace */
5bd4f169
AM		 568 0, /* src_mask */
569 0xffffffff, /* dst_mask */
b34976b6 570 FALSE), /* pcrel_offset */
5bd4f169
AM		 571
572 /* Like R_PPC64_ADDR16, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR16, /* type */
574 0, /* rightshift */
575 1, /* size (0 = byte, 1 = short, 2 = long) */
576 16, /* bitsize */
b34976b6 577 FALSE, /* pc_relative */
5bd4f169
AM		 578 0, /* bitpos */
579 complain_overflow_bitfield, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_UADDR16", /* name */
b34976b6 582 FALSE, /* partial_inplace */
5bd4f169
AM		 583 0, /* src_mask */
584 0xffff, /* dst_mask */
b34976b6 585 FALSE), /* pcrel_offset */
5bd4f169
AM		 586
587 /* 32-bit PC relative. */
588 HOWTO (R_PPC64_REL32, /* type */
589 0, /* rightshift */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
591 32, /* bitsize */
b34976b6 592 TRUE, /* pc_relative */
5bd4f169 593 0, /* bitpos */
cedb70c5 594 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 595 complain_overflow_signed, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_REL32", /* name */
b34976b6 598 FALSE, /* partial_inplace */
5bd4f169
AM		 599 0, /* src_mask */
600 0xffffffff, /* dst_mask */
b34976b6 601 TRUE), /* pcrel_offset */
5bd4f169 602
10ed1bba 603 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 604 HOWTO (R_PPC64_PLT32, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
b34976b6 608 FALSE, /* pc_relative */
5bd4f169
AM		 609 0, /* bitpos */
610 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 611 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 612 "R_PPC64_PLT32", /* name */
b34976b6 613 FALSE, /* partial_inplace */
5bd4f169 614 0, /* src_mask */
f5e87a1d 615 0xffffffff, /* dst_mask */
b34976b6 616 FALSE), /* pcrel_offset */
5bd4f169
AM		 617
618 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
619 FIXME: R_PPC64_PLTREL32 not supported. */
620 HOWTO (R_PPC64_PLTREL32, /* type */
621 0, /* rightshift */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
623 32, /* bitsize */
b34976b6 624 TRUE, /* pc_relative */
5bd4f169
AM		 625 0, /* bitpos */
626 complain_overflow_signed, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC64_PLTREL32", /* name */
b34976b6 629 FALSE, /* partial_inplace */
5bd4f169 630 0, /* src_mask */
f5e87a1d 631 0xffffffff, /* dst_mask */
b34976b6 632 TRUE), /* pcrel_offset */
5bd4f169
AM		 633
634 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
635 the symbol. */
636 HOWTO (R_PPC64_PLT16_LO, /* type */
637 0, /* rightshift */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
b34976b6 640 FALSE, /* pc_relative */
5bd4f169
AM		 641 0, /* bitpos */
642 complain_overflow_dont, /* complain_on_overflow */
805fc799 643 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 644 "R_PPC64_PLT16_LO", /* name */
b34976b6 645 FALSE, /* partial_inplace */
5bd4f169
AM		 646 0, /* src_mask */
647 0xffff, /* dst_mask */
b34976b6 648 FALSE), /* pcrel_offset */
5bd4f169
AM		 649
650 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
651 the symbol. */
652 HOWTO (R_PPC64_PLT16_HI, /* type */
653 16, /* rightshift */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
655 16, /* bitsize */
b34976b6 656 FALSE, /* pc_relative */
5bd4f169
AM		 657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
805fc799 659 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 660 "R_PPC64_PLT16_HI", /* name */
b34976b6 661 FALSE, /* partial_inplace */
5bd4f169
AM		 662 0, /* src_mask */
663 0xffff, /* dst_mask */
b34976b6 664 FALSE), /* pcrel_offset */
5bd4f169
AM		 665
666 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
667 the symbol. */
668 HOWTO (R_PPC64_PLT16_HA, /* type */
669 16, /* rightshift */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
671 16, /* bitsize */
b34976b6 672 FALSE, /* pc_relative */
5bd4f169
AM		 673 0, /* bitpos */
674 complain_overflow_dont, /* complain_on_overflow */
805fc799 675 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 676 "R_PPC64_PLT16_HA", /* name */
b34976b6 677 FALSE, /* partial_inplace */
5bd4f169
AM		 678 0, /* src_mask */
679 0xffff, /* dst_mask */
b34976b6 680 FALSE), /* pcrel_offset */
5bd4f169 681
c061c2d8 682 /* 16-bit section relative relocation. */
5bd4f169
AM		 683 HOWTO (R_PPC64_SECTOFF, /* type */
684 0, /* rightshift */
c061c2d8
AM		 685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
b34976b6 687 FALSE, /* pc_relative */
5bd4f169
AM		 688 0, /* bitpos */
689 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 690 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 691 "R_PPC64_SECTOFF", /* name */
b34976b6 692 FALSE, /* partial_inplace */
5bd4f169 693 0, /* src_mask */
c061c2d8 694 0xffff, /* dst_mask */
b34976b6 695 FALSE), /* pcrel_offset */
5bd4f169 696
c061c2d8 697 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 698 HOWTO (R_PPC64_SECTOFF_LO, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
b34976b6 702 FALSE, /* pc_relative */
5bd4f169
AM		 703 0, /* bitpos */
704 complain_overflow_dont, /* complain_on_overflow */
805fc799 705 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 706 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 707 FALSE, /* partial_inplace */
5bd4f169
AM		 708 0, /* src_mask */
709 0xffff, /* dst_mask */
b34976b6 710 FALSE), /* pcrel_offset */
5bd4f169
AM		 711
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC64_SECTOFF_HI, /* type */
714 16, /* rightshift */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
b34976b6 717 FALSE, /* pc_relative */
5bd4f169
AM		 718 0, /* bitpos */
719 complain_overflow_dont, /* complain_on_overflow */
805fc799 720 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 721 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 722 FALSE, /* partial_inplace */
5bd4f169
AM		 723 0, /* src_mask */
724 0xffff, /* dst_mask */
b34976b6 725 FALSE), /* pcrel_offset */
5bd4f169
AM		 726
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HA, /* type */
729 16, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
b34976b6 732 FALSE, /* pc_relative */
5bd4f169
AM		 733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
805fc799 735 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 736 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 737 FALSE, /* partial_inplace */
5bd4f169
AM		 738 0, /* src_mask */
739 0xffff, /* dst_mask */
b34976b6 740 FALSE), /* pcrel_offset */
5bd4f169 741
04c9666a
AM		 742 /* Like R_PPC64_REL24 without touching the two least significant bits. */
743 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 744 2, /* rightshift */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
746 30, /* bitsize */
b34976b6 747 TRUE, /* pc_relative */
5bd4f169
AM		 748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
04c9666a 751 "R_PPC64_REL30", /* name */
b34976b6 752 FALSE, /* partial_inplace */
d006db6c 753 0, /* src_mask */
5bd4f169 754 0xfffffffc, /* dst_mask */
b34976b6 755 TRUE), /* pcrel_offset */
5bd4f169
AM		 756
757 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
758
759 /* A standard 64-bit relocation. */
760 HOWTO (R_PPC64_ADDR64, /* type */
761 0, /* rightshift */
762 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
763 64, /* bitsize */
b34976b6 764 FALSE, /* pc_relative */
5bd4f169
AM		 765 0, /* bitpos */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR64", /* name */
b34976b6 769 FALSE, /* partial_inplace */
5bd4f169 770 0, /* src_mask */
f5e87a1d 771 ONES (64), /* dst_mask */
b34976b6 772 FALSE), /* pcrel_offset */
5bd4f169
AM		 773
774 /* The bits 32-47 of an address. */
775 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
776 32, /* rightshift */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
778 16, /* bitsize */
b34976b6 779 FALSE, /* pc_relative */
5bd4f169
AM		 780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 784 FALSE, /* partial_inplace */
5bd4f169
AM		 785 0, /* src_mask */
786 0xffff, /* dst_mask */
b34976b6 787 FALSE), /* pcrel_offset */
5bd4f169
AM		 788
789 /* The bits 32-47 of an address, plus 1 if the contents of the low
790 16 bits, treated as a signed number, is negative. */
791 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
792 32, /* rightshift */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
b34976b6 795 FALSE, /* pc_relative */
5bd4f169
AM		 796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
805fc799 798 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 799 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 800 FALSE, /* partial_inplace */
5bd4f169
AM		 801 0, /* src_mask */
802 0xffff, /* dst_mask */
b34976b6 803 FALSE), /* pcrel_offset */
5bd4f169
AM		 804
805 /* The bits 48-63 of an address. */
806 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
807 48, /* rightshift */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
b34976b6 810 FALSE, /* pc_relative */
5bd4f169
AM		 811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 815 FALSE, /* partial_inplace */
5bd4f169
AM		 816 0, /* src_mask */
817 0xffff, /* dst_mask */
b34976b6 818 FALSE), /* pcrel_offset */
5bd4f169
AM		 819
820 /* The bits 48-63 of an address, plus 1 if the contents of the low
821 16 bits, treated as a signed number, is negative. */
822 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
823 48, /* rightshift */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
825 16, /* bitsize */
b34976b6 826 FALSE, /* pc_relative */
5bd4f169
AM		 827 0, /* bitpos */
828 complain_overflow_dont, /* complain_on_overflow */
805fc799 829 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 830 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 831 FALSE, /* partial_inplace */
5bd4f169
AM		 832 0, /* src_mask */
833 0xffff, /* dst_mask */
b34976b6 834 FALSE), /* pcrel_offset */
5bd4f169
AM		 835
836 /* Like ADDR64, but may be unaligned. */
837 HOWTO (R_PPC64_UADDR64, /* type */
838 0, /* rightshift */
839 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
840 64, /* bitsize */
b34976b6 841 FALSE, /* pc_relative */
5bd4f169
AM		 842 0, /* bitpos */
843 complain_overflow_dont, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_PPC64_UADDR64", /* name */
b34976b6 846 FALSE, /* partial_inplace */
5bd4f169 847 0, /* src_mask */
f5e87a1d 848 ONES (64), /* dst_mask */
b34976b6 849 FALSE), /* pcrel_offset */
5bd4f169
AM		 850
851 /* 64-bit relative relocation. */
852 HOWTO (R_PPC64_REL64, /* type */
853 0, /* rightshift */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 64, /* bitsize */
b34976b6 856 TRUE, /* pc_relative */
5bd4f169
AM		 857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 "R_PPC64_REL64", /* name */
b34976b6 861 FALSE, /* partial_inplace */
5bd4f169 862 0, /* src_mask */
f5e87a1d 863 ONES (64), /* dst_mask */
b34976b6 864 TRUE), /* pcrel_offset */
5bd4f169 865
cedb70c5 866 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 867 HOWTO (R_PPC64_PLT64, /* type */
868 0, /* rightshift */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 64, /* bitsize */
b34976b6 871 FALSE, /* pc_relative */
5bd4f169
AM		 872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
805fc799 874 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 875 "R_PPC64_PLT64", /* name */
b34976b6 876 FALSE, /* partial_inplace */
5bd4f169 877 0, /* src_mask */
f5e87a1d 878 ONES (64), /* dst_mask */
b34976b6 879 FALSE), /* pcrel_offset */
5bd4f169
AM		 880
881 /* 64-bit PC relative relocation to the symbol's procedure linkage
882 table. */
883 /* FIXME: R_PPC64_PLTREL64 not supported. */
884 HOWTO (R_PPC64_PLTREL64, /* type */
885 0, /* rightshift */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 64, /* bitsize */
b34976b6 888 TRUE, /* pc_relative */
5bd4f169
AM		 889 0, /* bitpos */
890 complain_overflow_dont, /* complain_on_overflow */
805fc799 891 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 892 "R_PPC64_PLTREL64", /* name */
b34976b6 893 FALSE, /* partial_inplace */
5bd4f169 894 0, /* src_mask */
f5e87a1d 895 ONES (64), /* dst_mask */
b34976b6 896 TRUE), /* pcrel_offset */
5bd4f169
AM		 897
898 /* 16 bit TOC-relative relocation. */
899
900 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
901 HOWTO (R_PPC64_TOC16, /* type */
902 0, /* rightshift */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
904 16, /* bitsize */
b34976b6 905 FALSE, /* pc_relative */
5bd4f169
AM		 906 0, /* bitpos */
907 complain_overflow_signed, /* complain_on_overflow */
805fc799 908 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 909 "R_PPC64_TOC16", /* name */
b34976b6 910 FALSE, /* partial_inplace */
5bd4f169
AM		 911 0, /* src_mask */
912 0xffff, /* dst_mask */
b34976b6 913 FALSE), /* pcrel_offset */
5bd4f169
AM		 914
915 /* 16 bit TOC-relative relocation without overflow. */
916
917 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
918 HOWTO (R_PPC64_TOC16_LO, /* type */
919 0, /* rightshift */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
921 16, /* bitsize */
b34976b6 922 FALSE, /* pc_relative */
5bd4f169
AM		 923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
805fc799 925 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 926 "R_PPC64_TOC16_LO", /* name */
b34976b6 927 FALSE, /* partial_inplace */
5bd4f169
AM		 928 0, /* src_mask */
929 0xffff, /* dst_mask */
b34976b6 930 FALSE), /* pcrel_offset */
5bd4f169
AM		 931
932 /* 16 bit TOC-relative relocation, high 16 bits. */
933
934 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_HI, /* type */
936 16, /* rightshift */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
938 16, /* bitsize */
b34976b6 939 FALSE, /* pc_relative */
5bd4f169
AM		 940 0, /* bitpos */
941 complain_overflow_dont, /* complain_on_overflow */
805fc799 942 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 943 "R_PPC64_TOC16_HI", /* name */
b34976b6 944 FALSE, /* partial_inplace */
5bd4f169
AM		 945 0, /* src_mask */
946 0xffff, /* dst_mask */
b34976b6 947 FALSE), /* pcrel_offset */
5bd4f169
AM		 948
949 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
950 contents of the low 16 bits, treated as a signed number, is
951 negative. */
952
953 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
954 HOWTO (R_PPC64_TOC16_HA, /* type */
955 16, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
b34976b6 958 FALSE, /* pc_relative */
5bd4f169
AM		 959 0, /* bitpos */
960 complain_overflow_dont, /* complain_on_overflow */
805fc799 961 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 962 "R_PPC64_TOC16_HA", /* name */
b34976b6 963 FALSE, /* partial_inplace */
5bd4f169
AM		 964 0, /* src_mask */
965 0xffff, /* dst_mask */
b34976b6 966 FALSE), /* pcrel_offset */
5bd4f169
AM		 967
968 /* 64-bit relocation; insert value of TOC base (.TOC.). */
969
970 /* R_PPC64_TOC 51 doubleword64 .TOC. */
971 HOWTO (R_PPC64_TOC, /* type */
972 0, /* rightshift */
973 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
974 64, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
5bd4f169
AM		 976 0, /* bitpos */
977 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 978 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 979 "R_PPC64_TOC", /* name */
b34976b6 980 FALSE, /* partial_inplace */
5bd4f169 981 0, /* src_mask */
f5e87a1d 982 ONES (64), /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
5bd4f169
AM		 984
985 /* Like R_PPC64_GOT16, but also informs the link editor that the
986 value to relocate may (!) refer to a PLT entry which the link
987 editor (a) may replace with the symbol value. If the link editor
988 is unable to fully resolve the symbol, it may (b) create a PLT
989 entry and store the address to the new PLT entry in the GOT.
990 This permits lazy resolution of function symbols at run time.
991 The link editor may also skip all of this and just (c) emit a
992 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
993 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
994 HOWTO (R_PPC64_PLTGOT16, /* type */
995 0, /* rightshift */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
997 16, /* bitsize */
b34976b6 998 FALSE, /* pc_relative */
5bd4f169
AM		 999 0, /* bitpos */
1000 complain_overflow_signed, /* complain_on_overflow */
805fc799 1001 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1002 "R_PPC64_PLTGOT16", /* name */
1003 FALSE, /* partial_inplace */
1004 0, /* src_mask */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1007
1008 /* Like R_PPC64_PLTGOT16, but without overflow. */
1009 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1011 0, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 16, /* bitsize */
1014 FALSE, /* pc_relative */
1015 0, /* bitpos */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_LO", /* name */
1019 FALSE, /* partial_inplace */
1020 0, /* src_mask */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1023
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1025 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_HI", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1041 1 if the contents of the low 16 bits, treated as a signed number,
1042 is negative. */
1043 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1044 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 16, /* bitsize */
1048 FALSE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 ppc64_elf_unhandled_reloc, /* special_function */
1052 "R_PPC64_PLTGOT16_HA", /* name */
1053 FALSE, /* partial_inplace */
1054 0, /* src_mask */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1057
1058 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1059 HOWTO (R_PPC64_ADDR16_DS, /* type */
1060 0, /* rightshift */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 16, /* bitsize */
1063 FALSE, /* pc_relative */
1064 0, /* bitpos */
1065 complain_overflow_bitfield, /* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_PPC64_ADDR16_DS", /* name */
1068 FALSE, /* partial_inplace */
1069 0, /* src_mask */
1070 0xfffc, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1072
1073 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1075 0, /* rightshift */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 16, /* bitsize */
1078 FALSE, /* pc_relative */
1079 0, /* bitpos */
1080 complain_overflow_dont,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_PPC64_ADDR16_LO_DS",/* name */
1083 FALSE, /* partial_inplace */
1084 0, /* src_mask */
1085 0xfffc, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1087
1088 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_GOT16_DS, /* type */
1090 0, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 16, /* bitsize */
1093 FALSE, /* pc_relative */
1094 0, /* bitpos */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_GOT16_DS", /* name */
1098 FALSE, /* partial_inplace */
1099 0, /* src_mask */
1100 0xfffc, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1102
1103 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1105 0, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 16, /* bitsize */
1108 FALSE, /* pc_relative */
1109 0, /* bitpos */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc, /* special_function */
1112 "R_PPC64_GOT16_LO_DS", /* name */
1113 FALSE, /* partial_inplace */
1114 0, /* src_mask */
1115 0xfffc, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1117
1118 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1120 0, /* rightshift */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 16, /* bitsize */
1123 FALSE, /* pc_relative */
1124 0, /* bitpos */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc, /* special_function */
1127 "R_PPC64_PLT16_LO_DS", /* name */
1128 FALSE, /* partial_inplace */
1129 0, /* src_mask */
1130 0xfffc, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1132
1133 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1135 0, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 16, /* bitsize */
1138 FALSE, /* pc_relative */
1139 0, /* bitpos */
1140 complain_overflow_bitfield, /* complain_on_overflow */
1141 ppc64_elf_sectoff_reloc, /* special_function */
1142 "R_PPC64_SECTOFF_DS", /* name */
1143 FALSE, /* partial_inplace */
1144 0, /* src_mask */
1145 0xfffc, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1147
1148 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1150 0, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 16, /* bitsize */
1153 FALSE, /* pc_relative */
1154 0, /* bitpos */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc, /* special_function */
1157 "R_PPC64_SECTOFF_LO_DS",/* name */
1158 FALSE, /* partial_inplace */
1159 0, /* src_mask */
1160 0xfffc, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1162
1163 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_TOC16_DS, /* type */
1165 0, /* rightshift */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 16, /* bitsize */
1168 FALSE, /* pc_relative */
1169 0, /* bitpos */
1170 complain_overflow_signed, /* complain_on_overflow */
1171 ppc64_elf_toc_reloc, /* special_function */
1172 "R_PPC64_TOC16_DS", /* name */
1173 FALSE, /* partial_inplace */
1174 0, /* src_mask */
1175 0xfffc, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1177
1178 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1180 0, /* rightshift */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 16, /* bitsize */
1183 FALSE, /* pc_relative */
1184 0, /* bitpos */
1185 complain_overflow_dont, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc, /* special_function */
1187 "R_PPC64_TOC16_LO_DS", /* name */
1188 FALSE, /* partial_inplace */
1189 0, /* src_mask */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1192
1193 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1196 0, /* rightshift */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 16, /* bitsize */
1199 FALSE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_signed, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_DS", /* name */
1204 FALSE, /* partial_inplace */
1205 0, /* src_mask */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1208
1209 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1212 0, /* rightshift */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 16, /* bitsize */
1215 FALSE, /* pc_relative */
1216 0, /* bitpos */
1217 complain_overflow_dont, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_LO_DS",/* name */
1220 FALSE, /* partial_inplace */
1221 0, /* src_mask */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1224
1225 /* Marker reloc for TLS. */
1226 HOWTO (R_PPC64_TLS,
1227 0, /* rightshift */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 32, /* bitsize */
1230 FALSE, /* pc_relative */
1231 0, /* bitpos */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC64_TLS", /* name */
1235 FALSE, /* partial_inplace */
1236 0, /* src_mask */
1237 0, /* dst_mask */
1238 FALSE), /* pcrel_offset */
1239
1240 /* Computes the load module index of the load module that contains the
1241 definition of its TLS sym. */
1242 HOWTO (R_PPC64_DTPMOD64,
1243 0, /* rightshift */
1244 4, /* size (0 = byte, 1 = short, 2 = long) */
1245 64, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_unhandled_reloc, /* special_function */
1250 "R_PPC64_DTPMOD64", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 ONES (64), /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
1256 /* Computes a dtv-relative displacement, the difference between the value
1257 of sym+add and the base address of the thread-local storage block that
1258 contains the definition of sym, minus 0x8000. */
1259 HOWTO (R_PPC64_DTPREL64,
1260 0, /* rightshift */
1261 4, /* size (0 = byte, 1 = short, 2 = long) */
1262 64, /* bitsize */
1263 FALSE, /* pc_relative */
1264 0, /* bitpos */
1265 complain_overflow_dont, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc, /* special_function */
1267 "R_PPC64_DTPREL64", /* name */
1268 FALSE, /* partial_inplace */
1269 0, /* src_mask */
1270 ONES (64), /* dst_mask */
1271 FALSE), /* pcrel_offset */
1272
1273 /* A 16 bit dtprel reloc. */
1274 HOWTO (R_PPC64_DTPREL16,
1275 0, /* rightshift */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 16, /* bitsize */
1278 FALSE, /* pc_relative */
1279 0, /* bitpos */
1280 complain_overflow_signed, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_DTPREL16", /* name */
1283 FALSE, /* partial_inplace */
1284 0, /* src_mask */
1285 0xffff, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1287
1288 /* Like DTPREL16, but no overflow. */
1289 HOWTO (R_PPC64_DTPREL16_LO,
1290 0, /* rightshift */
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 16, /* bitsize */
1293 FALSE, /* pc_relative */
1294 0, /* bitpos */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 ppc64_elf_unhandled_reloc, /* special_function */
1297 "R_PPC64_DTPREL16_LO", /* name */
1298 FALSE, /* partial_inplace */
1299 0, /* src_mask */
1300 0xffff, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1302
1303 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1304 HOWTO (R_PPC64_DTPREL16_HI,
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 16, /* bitsize */
1308 FALSE, /* pc_relative */
1309 0, /* bitpos */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc64_elf_unhandled_reloc, /* special_function */
1312 "R_PPC64_DTPREL16_HI", /* name */
1313 FALSE, /* partial_inplace */
1314 0, /* src_mask */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1317
1318 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1319 HOWTO (R_PPC64_DTPREL16_HA,
1320 16, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 16, /* bitsize */
1323 FALSE, /* pc_relative */
1324 0, /* bitpos */
1325 complain_overflow_dont, /* complain_on_overflow */
1326 ppc64_elf_unhandled_reloc, /* special_function */
1327 "R_PPC64_DTPREL16_HA", /* name */
1328 FALSE, /* partial_inplace */
1329 0, /* src_mask */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1332
1333 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1334 HOWTO (R_PPC64_DTPREL16_HIGHER,
1335 32, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 16, /* bitsize */
1338 FALSE, /* pc_relative */
1339 0, /* bitpos */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc64_elf_unhandled_reloc, /* special_function */
1342 "R_PPC64_DTPREL16_HIGHER", /* name */
1343 FALSE, /* partial_inplace */
1344 0, /* src_mask */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1347
1348 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1349 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1350 32, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 16, /* bitsize */
1353 FALSE, /* pc_relative */
1354 0, /* bitpos */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 ppc64_elf_unhandled_reloc, /* special_function */
1357 "R_PPC64_DTPREL16_HIGHERA", /* name */
1358 FALSE, /* partial_inplace */
1359 0, /* src_mask */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1362
1363 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1364 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1365 48, /* rightshift */
1366 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL16_HIGHEST", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1379 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1380 48, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 16, /* bitsize */
1383 FALSE, /* pc_relative */
1384 0, /* bitpos */
1385 complain_overflow_dont, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1388 FALSE, /* partial_inplace */
1389 0, /* src_mask */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1392
1393 /* Like DTPREL16, but for insns with a DS field. */
1394 HOWTO (R_PPC64_DTPREL16_DS,
1395 0, /* rightshift */
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 16, /* bitsize */
1398 FALSE, /* pc_relative */
1399 0, /* bitpos */
1400 complain_overflow_signed, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_DS", /* name */
1403 FALSE, /* partial_inplace */
1404 0, /* src_mask */
1405 0xfffc, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1407
1408 /* Like DTPREL16_DS, but no overflow. */
1409 HOWTO (R_PPC64_DTPREL16_LO_DS,
1410 0, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 16, /* bitsize */
1413 FALSE, /* pc_relative */
1414 0, /* bitpos */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_LO_DS", /* name */
1418 FALSE, /* partial_inplace */
1419 0, /* src_mask */
1420 0xfffc, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1422
1423 /* Computes a tp-relative displacement, the difference between the value of
1424 sym+add and the value of the thread pointer (r13). */
1425 HOWTO (R_PPC64_TPREL64,
1426 0, /* rightshift */
1427 4, /* size (0 = byte, 1 = short, 2 = long) */
1428 64, /* bitsize */
1429 FALSE, /* pc_relative */
1430 0, /* bitpos */
1431 complain_overflow_dont, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc, /* special_function */
1433 "R_PPC64_TPREL64", /* name */
1434 FALSE, /* partial_inplace */
1435 0, /* src_mask */
1436 ONES (64), /* dst_mask */
1437 FALSE), /* pcrel_offset */
1438
1439 /* A 16 bit tprel reloc. */
1440 HOWTO (R_PPC64_TPREL16,
1441 0, /* rightshift */
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 16, /* bitsize */
1444 FALSE, /* pc_relative */
1445 0, /* bitpos */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc, /* special_function */
1448 "R_PPC64_TPREL16", /* name */
1449 FALSE, /* partial_inplace */
1450 0, /* src_mask */
1451 0xffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1453
1454 /* Like TPREL16, but no overflow. */
1455 HOWTO (R_PPC64_TPREL16_LO,
1456 0, /* rightshift */
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 16, /* bitsize */
1459 FALSE, /* pc_relative */
1460 0, /* bitpos */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc, /* special_function */
1463 "R_PPC64_TPREL16_LO", /* name */
1464 FALSE, /* partial_inplace */
1465 0, /* src_mask */
1466 0xffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1468
1469 /* Like TPREL16_LO, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_TPREL16_HI,
1471 16, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 16, /* bitsize */
1474 FALSE, /* pc_relative */
1475 0, /* bitpos */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc, /* special_function */
1478 "R_PPC64_TPREL16_HI", /* name */
1479 FALSE, /* partial_inplace */
1480 0, /* src_mask */
1481 0xffff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1483
1484 /* Like TPREL16_HI, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_TPREL16_HA,
1486 16, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 16, /* bitsize */
1489 FALSE, /* pc_relative */
1490 0, /* bitpos */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc, /* special_function */
1493 "R_PPC64_TPREL16_HA", /* name */
1494 FALSE, /* partial_inplace */
1495 0, /* src_mask */
1496 0xffff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1498
1499 /* Like TPREL16_HI, but next higher group of 16 bits. */
1500 HOWTO (R_PPC64_TPREL16_HIGHER,
1501 32, /* rightshift */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 16, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc, /* special_function */
1508 "R_PPC64_TPREL16_HIGHER", /* name */
1509 FALSE, /* partial_inplace */
1510 0, /* src_mask */
1511 0xffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1513
1514 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1515 HOWTO (R_PPC64_TPREL16_HIGHERA,
1516 32, /* rightshift */
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 16, /* bitsize */
1519 FALSE, /* pc_relative */
1520 0, /* bitpos */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc, /* special_function */
1523 "R_PPC64_TPREL16_HIGHERA", /* name */
1524 FALSE, /* partial_inplace */
1525 0, /* src_mask */
1526 0xffff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1528
1529 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1530 HOWTO (R_PPC64_TPREL16_HIGHEST,
1531 48, /* rightshift */
1532 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 16, /* bitsize */
1534 FALSE, /* pc_relative */
1535 0, /* bitpos */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL16_HIGHEST", /* name */
1539 FALSE, /* partial_inplace */
1540 0, /* src_mask */
1541 0xffff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1543
1544 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1545 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1546 48, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 16, /* bitsize */
1549 FALSE, /* pc_relative */
1550 0, /* bitpos */
1551 complain_overflow_dont, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16_HIGHESTA", /* name */
1554 FALSE, /* partial_inplace */
1555 0, /* src_mask */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1558
1559 /* Like TPREL16, but for insns with a DS field. */
1560 HOWTO (R_PPC64_TPREL16_DS,
1561 0, /* rightshift */
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 16, /* bitsize */
1564 FALSE, /* pc_relative */
1565 0, /* bitpos */
1566 complain_overflow_signed, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_DS", /* name */
1569 FALSE, /* partial_inplace */
1570 0, /* src_mask */
1571 0xfffc, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1573
1574 /* Like TPREL16_DS, but no overflow. */
1575 HOWTO (R_PPC64_TPREL16_LO_DS,
1576 0, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 16, /* bitsize */
1579 FALSE, /* pc_relative */
1580 0, /* bitpos */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_LO_DS", /* name */
1584 FALSE, /* partial_inplace */
1585 0, /* src_mask */
1586 0xfffc, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1588
1589 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1590 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1591 to the first entry relative to the TOC base (r2). */
1592 HOWTO (R_PPC64_GOT_TLSGD16,
1593 0, /* rightshift */
1594 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 16, /* bitsize */
1596 FALSE, /* pc_relative */
1597 0, /* bitpos */
1598 complain_overflow_signed, /* complain_on_overflow */
1599 ppc64_elf_unhandled_reloc, /* special_function */
1600 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1601 FALSE, /* partial_inplace */
5bd4f169
AM		 1602 0, /* src_mask */
1603 0xffff, /* dst_mask */
b34976b6 1604 FALSE), /* pcrel_offset */
5bd4f169 1605
411e1bfb
AM		 1606 /* Like GOT_TLSGD16, but no overflow. */
1607 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1608 0, /* rightshift */
1609 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 16, /* bitsize */
b34976b6 1611 FALSE, /* pc_relative */
5bd4f169
AM		 1612 0, /* bitpos */
1613 complain_overflow_dont, /* complain_on_overflow */
805fc799 1614 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1615 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1616 FALSE, /* partial_inplace */
5bd4f169
AM		 1617 0, /* src_mask */
1618 0xffff, /* dst_mask */
b34976b6 1619 FALSE), /* pcrel_offset */
5bd4f169 1620
411e1bfb
AM		 1621 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1622 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1623 16, /* rightshift */
1624 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 16, /* bitsize */
b34976b6 1626 FALSE, /* pc_relative */
5bd4f169
AM		 1627 0, /* bitpos */
1628 complain_overflow_dont, /* complain_on_overflow */
805fc799 1629 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1630 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1631 FALSE, /* partial_inplace */
5bd4f169
AM		 1632 0, /* src_mask */
1633 0xffff, /* dst_mask */
b34976b6 1634 FALSE), /* pcrel_offset */
5bd4f169 1635
411e1bfb
AM		 1636 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1637 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1638 16, /* rightshift */
1639 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 16, /* bitsize */
b34976b6 1641 FALSE, /* pc_relative */
5bd4f169 1642 0, /* bitpos */
411e1bfb 1643 complain_overflow_dont, /* complain_on_overflow */
805fc799 1644 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1645 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1646 FALSE, /* partial_inplace */
5bd4f169
AM		 1647 0, /* src_mask */
1648 0xffff, /* dst_mask */
b34976b6 1649 FALSE), /* pcrel_offset */
5bd4f169 1650
411e1bfb
AM		 1651 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1652 with values (sym+add)@dtpmod and zero, and computes the offset to the
1653 first entry relative to the TOC base (r2). */
1654 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1655 0, /* rightshift */
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 16, /* bitsize */
b34976b6 1658 FALSE, /* pc_relative */
5bd4f169 1659 0, /* bitpos */
411e1bfb
AM		 1660 complain_overflow_signed, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc, /* special_function */
1662 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1663 FALSE, /* partial_inplace */
d006db6c 1664 0, /* src_mask */
411e1bfb 1665 0xffff, /* dst_mask */
b34976b6 1666 FALSE), /* pcrel_offset */
5bd4f169 1667
411e1bfb
AM		 1668 /* Like GOT_TLSLD16, but no overflow. */
1669 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1670 0, /* rightshift */
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1672 16, /* bitsize */
b34976b6 1673 FALSE, /* pc_relative */
5bd4f169 1674 0, /* bitpos */
411e1bfb
AM		 1675 complain_overflow_dont, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc, /* special_function */
1677 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1678 FALSE, /* partial_inplace */
d006db6c 1679 0, /* src_mask */
411e1bfb 1680 0xffff, /* dst_mask */
b34976b6 1681 FALSE), /* pcrel_offset */
5bd4f169 1682
411e1bfb
AM		 1683 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1684 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1685 16, /* rightshift */
5bd4f169
AM		 1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 16, /* bitsize */
b34976b6 1688 FALSE, /* pc_relative */
5bd4f169 1689 0, /* bitpos */
411e1bfb 1690 complain_overflow_dont, /* complain_on_overflow */
805fc799 1691 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1692 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1693 FALSE, /* partial_inplace */
d006db6c 1694 0, /* src_mask */
411e1bfb 1695 0xffff, /* dst_mask */
b34976b6 1696 FALSE), /* pcrel_offset */
5bd4f169 1697
411e1bfb
AM		 1698 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1699 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1700 16, /* rightshift */
5bd4f169
AM		 1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 16, /* bitsize */
b34976b6 1703 FALSE, /* pc_relative */
5bd4f169
AM		 1704 0, /* bitpos */
1705 complain_overflow_dont, /* complain_on_overflow */
805fc799 1706 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1707 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1708 FALSE, /* partial_inplace */
d006db6c 1709 0, /* src_mask */
411e1bfb 1710 0xffff, /* dst_mask */
b34976b6 1711 FALSE), /* pcrel_offset */
5bd4f169 1712
411e1bfb
AM		 1713 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1714 the offset to the entry relative to the TOC base (r2). */
1715 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1716 0, /* rightshift */
1717 1, /* size (0 = byte, 1 = short, 2 = long) */
1718 16, /* bitsize */
b34976b6 1719 FALSE, /* pc_relative */
5bd4f169 1720 0, /* bitpos */
411e1bfb 1721 complain_overflow_signed, /* complain_on_overflow */
805fc799 1722 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1723 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1724 FALSE, /* partial_inplace */
d006db6c 1725 0, /* src_mask */
5bd4f169 1726 0xfffc, /* dst_mask */
b34976b6 1727 FALSE), /* pcrel_offset */
5bd4f169 1728
411e1bfb
AM		 1729 /* Like GOT_DTPREL16_DS, but no overflow. */
1730 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1731 0, /* rightshift */
c061c2d8
AM		 1732 1, /* size (0 = byte, 1 = short, 2 = long) */
1733 16, /* bitsize */
b34976b6 1734 FALSE, /* pc_relative */
5bd4f169 1735 0, /* bitpos */
411e1bfb
AM		 1736 complain_overflow_dont, /* complain_on_overflow */
1737 ppc64_elf_unhandled_reloc, /* special_function */
1738 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1739 FALSE, /* partial_inplace */
d006db6c 1740 0, /* src_mask */
c061c2d8 1741 0xfffc, /* dst_mask */
b34976b6 1742 FALSE), /* pcrel_offset */
5bd4f169 1743
411e1bfb
AM		 1744 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1745 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1746 16, /* rightshift */
5bd4f169
AM		 1747 1, /* size (0 = byte, 1 = short, 2 = long) */
1748 16, /* bitsize */
b34976b6 1749 FALSE, /* pc_relative */
5bd4f169
AM		 1750 0, /* bitpos */
1751 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1752 ppc64_elf_unhandled_reloc, /* special_function */
1753 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1754 FALSE, /* partial_inplace */
d006db6c 1755 0, /* src_mask */
411e1bfb 1756 0xffff, /* dst_mask */
b34976b6 1757 FALSE), /* pcrel_offset */
5bd4f169 1758
411e1bfb
AM		 1759 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1760 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1761 16, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 16, /* bitsize */
1764 FALSE, /* pc_relative */
1765 0, /* bitpos */
1766 complain_overflow_dont, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_DTPREL16_HA", /* name */
1769 FALSE, /* partial_inplace */
1770 0, /* src_mask */
1771 0xffff, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1773
1774 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1775 offset to the entry relative to the TOC base (r2). */
1776 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1777 0, /* rightshift */
1778 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 16, /* bitsize */
b34976b6 1780 FALSE, /* pc_relative */
5bd4f169
AM		 1781 0, /* bitpos */
1782 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1783 ppc64_elf_unhandled_reloc, /* special_function */
1784 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1785 FALSE, /* partial_inplace */
d006db6c 1786 0, /* src_mask */
ad8e1ba5 1787 0xfffc, /* dst_mask */
b34976b6 1788 FALSE), /* pcrel_offset */
5bd4f169 1789
411e1bfb
AM		 1790 /* Like GOT_TPREL16_DS, but no overflow. */
1791 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1792 0, /* rightshift */
1793 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 16, /* bitsize */
b34976b6 1795 FALSE, /* pc_relative */
5bd4f169
AM		 1796 0, /* bitpos */
1797 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1798 ppc64_elf_unhandled_reloc, /* special_function */
1799 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1800 FALSE, /* partial_inplace */
d006db6c 1801 0, /* src_mask */
ad8e1ba5 1802 0xfffc, /* dst_mask */
b34976b6 1803 FALSE), /* pcrel_offset */
5bd4f169 1804
411e1bfb
AM		 1805 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1806 HOWTO (R_PPC64_GOT_TPREL16_HI,
1807 16, /* rightshift */
5bd4f169
AM		 1808 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 16, /* bitsize */
b34976b6 1810 FALSE, /* pc_relative */
5bd4f169 1811 0, /* bitpos */
411e1bfb 1812 complain_overflow_dont, /* complain_on_overflow */
805fc799 1813 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1814 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1815 FALSE, /* partial_inplace */
d006db6c 1816 0, /* src_mask */
411e1bfb 1817 0xffff, /* dst_mask */
b34976b6 1818 FALSE), /* pcrel_offset */
5bd4f169 1819
411e1bfb
AM		 1820 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1821 HOWTO (R_PPC64_GOT_TPREL16_HA,
1822 16, /* rightshift */
5bd4f169
AM		 1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 16, /* bitsize */
b34976b6 1825 FALSE, /* pc_relative */
5bd4f169
AM		 1826 0, /* bitpos */
1827 complain_overflow_dont, /* complain_on_overflow */
805fc799 1828 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1829 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1830 FALSE, /* partial_inplace */
d006db6c 1831 0, /* src_mask */
411e1bfb 1832 0xffff, /* dst_mask */
b34976b6 1833 FALSE), /* pcrel_offset */
5bd4f169
AM		 1834
1835 /* GNU extension to record C++ vtable hierarchy. */
1836 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1837 0, /* rightshift */
1838 0, /* size (0 = byte, 1 = short, 2 = long) */
1839 0, /* bitsize */
b34976b6 1840 FALSE, /* pc_relative */
5bd4f169
AM		 1841 0, /* bitpos */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 NULL, /* special_function */
1844 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1845 FALSE, /* partial_inplace */
5bd4f169
AM		 1846 0, /* src_mask */
1847 0, /* dst_mask */
b34976b6 1848 FALSE), /* pcrel_offset */
5bd4f169
AM		 1849
1850 /* GNU extension to record C++ vtable member usage. */
1851 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1852 0, /* rightshift */
1853 0, /* size (0 = byte, 1 = short, 2 = long) */
1854 0, /* bitsize */
b34976b6 1855 FALSE, /* pc_relative */
5bd4f169
AM		 1856 0, /* bitpos */
1857 complain_overflow_dont, /* complain_on_overflow */
1858 NULL, /* special_function */
1859 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1860 FALSE, /* partial_inplace */
5bd4f169
AM		 1861 0, /* src_mask */
1862 0, /* dst_mask */
b34976b6 1863 FALSE), /* pcrel_offset */
5bd4f169
AM		 1864};
1865
1866\f
1867/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1868 be done. */
1869
1870static void
4ce794b7 1871ppc_howto_init (void)
5bd4f169
AM		 1872{
1873 unsigned int i, type;
1874
1875 for (i = 0;
1876 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1877 i++)
1878 {
1879 type = ppc64_elf_howto_raw[i].type;
1880 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1881 / sizeof (ppc64_elf_howto_table[0])));
1882 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1883 }
1884}
1885
1886static reloc_howto_type *
4ce794b7
AM		 1887ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1888 bfd_reloc_code_real_type code)
5bd4f169 1889{
411e1bfb 1890 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1891
1892 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1893 /* Initialize howto table if needed. */
1894 ppc_howto_init ();
1895
4ce794b7 1896 switch (code)
5bd4f169
AM		 1897 {
1898 default:
4ce794b7 1899 return NULL;
5bd4f169 1900
411e1bfb
AM		 1901 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1902 break;
1903 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1904 break;
1905 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1906 break;
1907 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1908 break;
1909 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1910 break;
1911 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1912 break;
1913 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1914 break;
411e1bfb 1915 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1916 break;
411e1bfb 1917 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1918 break;
411e1bfb 1919 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1920 break;
411e1bfb 1921 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1922 break;
411e1bfb 1923 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1924 break;
411e1bfb 1925 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1926 break;
411e1bfb 1927 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1928 break;
411e1bfb 1929 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1930 break;
411e1bfb 1931 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1932 break;
411e1bfb 1933 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1934 break;
411e1bfb 1935 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1936 break;
411e1bfb 1937 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1938 break;
411e1bfb 1939 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1940 break;
411e1bfb 1941 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1942 break;
411e1bfb 1943 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1944 break;
411e1bfb 1945 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1946 break;
411e1bfb 1947 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1948 break;
411e1bfb 1949 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1950 break;
411e1bfb 1951 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1952 break;
411e1bfb 1953 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1954 break;
411e1bfb 1955 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1956 break;
411e1bfb 1957 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1958 break;
411e1bfb 1959 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1960 break;
411e1bfb 1961 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1962 break;
411e1bfb 1963 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1964 break;
411e1bfb 1965 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1966 break;
411e1bfb 1967 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1968 break;
411e1bfb 1969 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1970 break;
411e1bfb 1971 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1972 break;
411e1bfb 1973 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1974 break;
411e1bfb 1975 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1976 break;
411e1bfb 1977 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1978 break;
411e1bfb 1979 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1980 break;
411e1bfb 1981 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1982 break;
411e1bfb 1983 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1984 break;
411e1bfb 1985 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1986 break;
411e1bfb 1987 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1988 break;
411e1bfb 1989 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1990 break;
411e1bfb 1991 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1992 break;
411e1bfb 1993 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1994 break;
411e1bfb 1995 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 1996 break;
411e1bfb 1997 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 1998 break;
411e1bfb 1999 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2000 break;
411e1bfb 2001 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2002 break;
411e1bfb 2003 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2004 break;
411e1bfb 2005 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2006 break;
411e1bfb 2007 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2008 break;
411e1bfb 2009 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2010 break;
411e1bfb 2011 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2012 break;
411e1bfb 2013 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2014 break;
411e1bfb 2015 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2016 break;
411e1bfb 2017 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2018 break;
411e1bfb 2019 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2020 break;
411e1bfb 2021 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2022 break;
411e1bfb 2023 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2024 break;
411e1bfb 2025 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2026 break;
411e1bfb 2027 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2028 break;
411e1bfb 2029 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2030 break;
411e1bfb 2031 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2032 break;
411e1bfb
AM		 2033 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2034 break;
2035 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2036 break;
2037 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2038 break;
2039 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2040 break;
2041 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2042 break;
2043 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2044 break;
2045 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2046 break;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2048 break;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2050 break;
2051 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2052 break;
2053 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2054 break;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2056 break;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2058 break;
2059 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2060 break;
2061 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2062 break;
2063 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2064 break;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2066 break;
2067 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2068 break;
2069 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2070 break;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2072 break;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2074 break;
2075 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2076 break;
2077 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2078 break;
2079 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2080 break;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2082 break;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2084 break;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2086 break;
2087 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2088 break;
2089 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2090 break;
2091 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2092 break;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2094 break;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2096 break;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2098 break;
2099 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2100 break;
2101 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2102 break;
2103 }
2104
4ce794b7 2105 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2106};
2107
2108/* Set the howto pointer for a PowerPC ELF reloc. */
2109
2110static void
4ce794b7
AM		 2111ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2112 Elf_Internal_Rela *dst)
5bd4f169 2113{
65f38f15
AM		 2114 unsigned int type;
2115
ef60b7ff 2116 /* Initialize howto table if needed. */
5bd4f169 2117 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2118 ppc_howto_init ();
2119
65f38f15
AM		 2120 type = ELF64_R_TYPE (dst->r_info);
2121 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2122 / sizeof (ppc64_elf_howto_table[0])));
2123 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2124}
2125
04c9666a 2126/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2127
2128static bfd_reloc_status_type
4ce794b7
AM		 2129ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2130 void *data, asection *input_section,
2131 bfd *output_bfd, char **error_message)
5bd4f169 2132{
805fc799
AM		 2133 /* If this is a relocatable link (output_bfd test tells us), just
2134 call the generic function. Any adjustment will be done at final
2135 link time. */
2136 if (output_bfd != NULL)
cedb70c5 2137 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2138 input_section, output_bfd, error_message);
2139
2140 /* Adjust the addend for sign extension of the low 16 bits.
2141 We won't actually be using the low 16 bits, so trashing them
2142 doesn't matter. */
2143 reloc_entry->addend += 0x8000;
2144 return bfd_reloc_continue;
2145}
5bd4f169 2146
2441e016
AM		 2147static bfd_reloc_status_type
2148ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2149 void *data, asection *input_section,
2150 bfd *output_bfd, char **error_message)
2151{
2152 if (output_bfd != NULL)
2153 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2154 input_section, output_bfd, error_message);
2155
699733f6
AM		 2156 if (strcmp (symbol->section->name, ".opd") == 0
2157 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2158 {
2159 bfd_vma dest = opd_entry_value (symbol->section,
2160 symbol->value + reloc_entry->addend,
2161 NULL, NULL);
2162 if (dest != (bfd_vma) -1)
2163 reloc_entry->addend = dest - (symbol->value
2164 + symbol->section->output_section->vma
2165 + symbol->section->output_offset);
2166 }
2167 return bfd_reloc_continue;
2168}
2169
805fc799 2170static bfd_reloc_status_type
4ce794b7
AM		 2171ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2172 void *data, asection *input_section,
2173 bfd *output_bfd, char **error_message)
805fc799
AM		 2174{
2175 long insn;
04c9666a 2176 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2177 bfd_size_type octets;
2178 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2179 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2180
2181 /* If this is a relocatable link (output_bfd test tells us), just
2182 call the generic function. Any adjustment will be done at final
2183 link time. */
5bd4f169 2184 if (output_bfd != NULL)
cedb70c5 2185 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2186 input_section, output_bfd, error_message);
2187
2188 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2189 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2190 insn &= ~(0x01 << 21);
4ce794b7 2191 r_type = reloc_entry->howto->type;
805fc799
AM		 2192 if (r_type == R_PPC64_ADDR14_BRTAKEN
2193 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2194 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2195
2196 if (is_power4)
5bd4f169 2197 {
805fc799
AM		 2198 /* Set 'a' bit. This is 0b00010 in BO field for branch
2199 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2200 for branch on CTR insns (BO == 1a00t or 1a01t). */
2201 if ((insn & (0x14 << 21)) == (0x04 << 21))
2202 insn |= 0x02 << 21;
2203 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2204 insn |= 0x08 << 21;
2205 else
2441e016 2206 goto out;
5bd4f169 2207 }
805fc799
AM		 2208 else
2209 {
2210 bfd_vma target = 0;
2211 bfd_vma from;
5bd4f169 2212
805fc799
AM		 2213 if (!bfd_is_com_section (symbol->section))
2214 target = symbol->value;
2215 target += symbol->section->output_section->vma;
2216 target += symbol->section->output_offset;
2217 target += reloc_entry->addend;
5bd4f169 2218
805fc799
AM		 2219 from = (reloc_entry->address
2220 + input_section->output_offset
2221 + input_section->output_section->vma);
5bd4f169 2222
805fc799
AM		 2223 /* Invert 'y' bit if not the default. */
2224 if ((bfd_signed_vma) (target - from) < 0)
2225 insn ^= 0x01 << 21;
2226 }
4ce794b7 2227 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2228 out:
2229 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2230 input_section, output_bfd, error_message);
805fc799 2231}
5bd4f169 2232
805fc799 2233static bfd_reloc_status_type
4ce794b7
AM		 2234ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2235 void *data, asection *input_section,
2236 bfd *output_bfd, char **error_message)
805fc799
AM		 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 2243 input_section, output_bfd, error_message);
5bd4f169 2244
805fc799
AM		 2245 /* Subtract the symbol section base address. */
2246 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2247 return bfd_reloc_continue;
2248}
2249
805fc799 2250static bfd_reloc_status_type
4ce794b7
AM		 2251ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2252 void *data, asection *input_section,
2253 bfd *output_bfd, char **error_message)
805fc799
AM		 2254{
2255 /* If this is a relocatable link (output_bfd test tells us), just
2256 call the generic function. Any adjustment will be done at final
2257 link time. */
2258 if (output_bfd != NULL)
cedb70c5 2259 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2260 input_section, output_bfd, error_message);
2261
2262 /* Subtract the symbol section base address. */
2263 reloc_entry->addend -= symbol->section->output_section->vma;
2264
2265 /* Adjust the addend for sign extension of the low 16 bits. */
2266 reloc_entry->addend += 0x8000;
2267 return bfd_reloc_continue;
2268}
2269
2270static bfd_reloc_status_type
4ce794b7
AM		 2271ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2272 void *data, asection *input_section,
2273 bfd *output_bfd, char **error_message)
805fc799
AM		 2274{
2275 bfd_vma TOCstart;
2276
2277 /* If this is a relocatable link (output_bfd test tells us), just
2278 call the generic function. Any adjustment will be done at final
2279 link time. */
2280 if (output_bfd != NULL)
cedb70c5 2281 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2282 input_section, output_bfd, error_message);
2283
2284 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2285 if (TOCstart == 0)
2286 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2287
2288 /* Subtract the TOC base address. */
2289 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2290 return bfd_reloc_continue;
2291}
2292
2293static bfd_reloc_status_type
4ce794b7
AM		 2294ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2295 void *data, asection *input_section,
2296 bfd *output_bfd, char **error_message)
805fc799
AM		 2297{
2298 bfd_vma TOCstart;
2299
2300 /* If this is a relocatable link (output_bfd test tells us), just
2301 call the generic function. Any adjustment will be done at final
2302 link time. */
2303 if (output_bfd != NULL)
cedb70c5 2304 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2305 input_section, output_bfd, error_message);
2306
2307 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2308 if (TOCstart == 0)
2309 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2310
2311 /* Subtract the TOC base address. */
2312 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2313
2314 /* Adjust the addend for sign extension of the low 16 bits. */
2315 reloc_entry->addend += 0x8000;
2316 return bfd_reloc_continue;
2317}
2318
2319static bfd_reloc_status_type
4ce794b7
AM		 2320ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2321 void *data, asection *input_section,
2322 bfd *output_bfd, char **error_message)
805fc799
AM		 2323{
2324 bfd_vma TOCstart;
2325 bfd_size_type octets;
2326
2327 /* If this is a relocatable link (output_bfd test tells us), just
2328 call the generic function. Any adjustment will be done at final
2329 link time. */
2330 if (output_bfd != NULL)
cedb70c5 2331 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2332 input_section, output_bfd, error_message);
2333
2334 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2335 if (TOCstart == 0)
2336 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2337
2338 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2339 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2340 return bfd_reloc_ok;
2341}
2342
2343static bfd_reloc_status_type
4ce794b7
AM		 2344ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2345 void *data, asection *input_section,
2346 bfd *output_bfd, char **error_message)
805fc799
AM		 2347{
2348 /* If this is a relocatable link (output_bfd test tells us), just
2349 call the generic function. Any adjustment will be done at final
2350 link time. */
2351 if (output_bfd != NULL)
cedb70c5 2352 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2353 input_section, output_bfd, error_message);
2354
2355 if (error_message != NULL)
2356 {
2357 static char buf[60];
2358 sprintf (buf, "generic linker can't handle %s",
2359 reloc_entry->howto->name);
2360 *error_message = buf;
2361 }
2362 return bfd_reloc_dangerous;
2363}
2364
e717da7e
AM		 2365struct ppc64_elf_obj_tdata
2366{
2367 struct elf_obj_tdata elf;
2368
2369 /* Shortcuts to dynamic linker sections. */
2370 asection *got;
2371 asection *relgot;
2372
81688140
AM		 2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2376
e717da7e
AM		 2377 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2378 sections means we potentially need one of these for each input bfd. */
2379 union {
2380 bfd_signed_vma refcount;
2381 bfd_vma offset;
2382 } tlsld_got;
8860955f
AM		 2383
2384 /* A copy of relocs before they are modified for --emit-relocs. */
2385 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2386};
2387
2388#define ppc64_elf_tdata(bfd) \
2389 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2390
2391#define ppc64_tlsld_got(bfd) \
2392 (&ppc64_elf_tdata (bfd)->tlsld_got)
2393
2394/* Override the generic function because we store some extras. */
2395
2396static bfd_boolean
2397ppc64_elf_mkobject (bfd *abfd)
2398{
2399 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2400 abfd->tdata.any = bfd_zalloc (abfd, amt);
2401 if (abfd->tdata.any == NULL)
2402 return FALSE;
2403 return TRUE;
2404}
2405
ee75fd95
AM		 2406/* Return 1 if target is one of ours. */
2407
7b53ace3 2408static bfd_boolean
ee75fd95 2409is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2410{
2411 extern const bfd_target bfd_elf64_powerpc_vec;
2412 extern const bfd_target bfd_elf64_powerpcle_vec;
2413
2414 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2415}
2416
feee612b
AM		 2417/* Fix bad default arch selected for a 64 bit input bfd when the
2418 default is 32 bit. */
2419
b34976b6 2420static bfd_boolean
4ce794b7 2421ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2422{
2423 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2424 {
2425 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2426
2427 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2428 {
2429 /* Relies on arch after 32 bit default being 64 bit default. */
2430 abfd->arch_info = abfd->arch_info->next;
2431 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2432 }
2433 }
b34976b6 2434 return TRUE;
feee612b
AM		 2435}
2436
d37c89e5
AM		 2437/* Support for core dump NOTE sections. */
2438
2439static bfd_boolean
2440ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2441{
eea6121a 2442 size_t offset, size;
d37c89e5
AM		 2443
2444 if (note->descsz != 504)
2445 return FALSE;
2446
2447 /* pr_cursig */
2448 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2449
2450 /* pr_pid */
2451 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2452
2453 /* pr_reg */
2454 offset = 112;
eea6121a 2455 size = 384;
d37c89e5
AM		 2456
2457 /* Make a ".reg/999" section. */
2458 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2459 size, note->descpos + offset);
d37c89e5
AM		 2460}
2461
2462static bfd_boolean
2463ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2464{
2465 if (note->descsz != 136)
2466 return FALSE;
2467
2468 elf_tdata (abfd)->core_program
2469 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2470 elf_tdata (abfd)->core_command
2471 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2472
2473 return TRUE;
2474}
2475
5bd4f169
AM		 2476/* Merge backend specific data from an object file to the output
2477 object file when linking. */
2f6d9989 2478
b34976b6 2479static bfd_boolean
4ce794b7 2480ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2481{
5bd4f169
AM		 2482 /* Check if we have the same endianess. */
2483 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2484 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2485 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2486 {
2487 const char *msg;
2488
2489 if (bfd_big_endian (ibfd))
d003868e 2490 msg = _("%B: compiled for a big endian system "
4ce794b7 2491 "and target is little endian");
5bd4f169 2492 else
d003868e 2493 msg = _("%B: compiled for a little endian system "
4ce794b7 2494 "and target is big endian");
5bd4f169 2495
d003868e 2496 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2497
2498 bfd_set_error (bfd_error_wrong_format);
b34976b6 2499 return FALSE;
5bd4f169
AM		 2500 }
2501
b34976b6 2502 return TRUE;
5bd4f169 2503}
f0abc2a1 2504
5d35169e
AM		 2505/* Add extra PPC sections. */
2506
2507static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2508{
7dcb9820
AM		 2509 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2511 { ".plt", 4, 0, SHT_NOBITS, 0 },
2512 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2513 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2514 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2515 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2516};
2517
f0abc2a1
AM		 2518struct _ppc64_elf_section_data
2519{
2520 struct bfd_elf_section_data elf;
411e1bfb
AM		 2521
2522 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2523 union
2524 {
411e1bfb 2525 /* Points to the function code section for local opd entries. */
f0abc2a1 2526 asection **func_sec;
411e1bfb 2527 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2528 long *adjust;
2529 } opd;
411e1bfb
AM		 2530
2531 /* An array for toc sections, indexed by offset/8.
2532 Specifies the relocation symbol index used at a given toc offset. */
2533 unsigned *t_symndx;
f0abc2a1
AM		 2534};
2535
2536#define ppc64_elf_section_data(sec) \
411e1bfb 2537 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2538
2539static bfd_boolean
4ce794b7 2540ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2541{
2542 struct _ppc64_elf_section_data *sdata;
2543 bfd_size_type amt = sizeof (*sdata);
2544
4ce794b7 2545 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2546 if (sdata == NULL)
2547 return FALSE;
4ce794b7 2548 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2549
2550 return _bfd_elf_new_section_hook (abfd, sec);
2551}
4025353c
AM		 2552
2553static void *
2554get_opd_info (asection * sec)
2555{
2556 if (sec != NULL
2557 && ppc64_elf_section_data (sec) != NULL
2558 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2559 return ppc64_elf_section_data (sec)->opd.adjust;
2560 return NULL;
2561}
90e3cdf2
JJ		 2562\f
2563/* Parameters for the qsort hook. */
2564static asection *synthetic_opd;
2565static bfd_boolean synthetic_relocatable;
2566
699733f6 2567/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2568
2569static int
2570compare_symbols (const void *ap, const void *bp)
2571{
2572 const asymbol *a = * (const asymbol **) ap;
2573 const asymbol *b = * (const asymbol **) bp;
2574
699733f6
AM		 2575 /* Section symbols first. */
2576 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2577 return -1;
699733f6 2578 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2579 return 1;
2580
699733f6 2581 /* then .opd symbols. */
90e3cdf2
JJ		 2582 if (a->section == synthetic_opd && b->section != synthetic_opd)
2583 return -1;
2584 if (a->section != synthetic_opd && b->section == synthetic_opd)
2585 return 1;
2586
699733f6 2587 /* then other code symbols. */
90e3cdf2
JJ		 2588 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2589 == (SEC_CODE | SEC_ALLOC)
2590 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2591 != (SEC_CODE | SEC_ALLOC))
2592 return -1;
2593
2594 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2595 != (SEC_CODE | SEC_ALLOC)
2596 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2597 == (SEC_CODE | SEC_ALLOC))
2598 return 1;
2599
2600 if (synthetic_relocatable)
2601 {
2602 if (a->section->id < b->section->id)
2603 return -1;
2604
2605 if (a->section->id > b->section->id)
2606 return 1;
2607 }
2608
2609 if (a->value + a->section->vma < b->value + b->section->vma)
2610 return -1;
2611
2612 if (a->value + a->section->vma > b->value + b->section->vma)
2613 return 1;
2614
2615 return 0;
2616}
2617
699733f6 2618/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2619
699733f6
AM		 2620static asymbol *
2621sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2622{
699733f6 2623 long mid;
90e3cdf2 2624
699733f6
AM		 2625 if (id == -1)
2626 {
2627 while (lo < hi)
2628 {
2629 mid = (lo + hi) >> 1;
2630 if (syms[mid]->value + syms[mid]->section->vma < value)
2631 lo = mid + 1;
2632 else if (syms[mid]->value + syms[mid]->section->vma > value)
2633 hi = mid;
2634 else
2635 return syms[mid];
2636 }
2637 }
2638 else
2639 {
2640 while (lo < hi)
2641 {
2642 mid = (lo + hi) >> 1;
2643 if (syms[mid]->section->id < id)
2644 lo = mid + 1;
2645 else if (syms[mid]->section->id > id)
2646 hi = mid;
2647 else if (syms[mid]->value < value)
2648 lo = mid + 1;
2649 else if (syms[mid]->value > value)
2650 hi = mid;
2651 else
2652 return syms[mid];
2653 }
2654 }
2655 return NULL;
90e3cdf2
JJ		 2656}
2657
699733f6
AM		 2658/* Create synthetic symbols, effectively restoring "dot-symbol" function
2659 entry syms. */
90e3cdf2
JJ		 2660
2661static long
a7535cf3
AM		 2662ppc64_elf_get_synthetic_symtab (bfd *abfd,
2663 long static_count, asymbol **static_syms,
2664 long dyn_count, asymbol **dyn_syms,
c9727e01 2665 asymbol **ret)
90e3cdf2
JJ		 2666{
2667 asymbol *s;
699733f6
AM		 2668 long i;
2669 long count;
90e3cdf2 2670 char *names;
a7535cf3 2671 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2672 asection *opd;
90e3cdf2 2673 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2674 asymbol **syms;
90e3cdf2
JJ		 2675
2676 *ret = NULL;
2677
2678 opd = bfd_get_section_by_name (abfd, ".opd");
2679 if (opd == NULL)
2680 return 0;
2681
a7535cf3 2682 symcount = static_count;
c9727e01 2683 if (!relocatable)
a7535cf3 2684 symcount += dyn_count;
90e3cdf2 2685 if (symcount == 0)
c9727e01 2686 return 0;
90e3cdf2 2687
a7535cf3
AM		 2688 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2689 if (syms == NULL)
7356fed5 2690 return -1;
a7535cf3
AM		 2691
2692 if (!relocatable && static_count != 0 && dyn_count != 0)
2693 {
2694 /* Use both symbol tables. */
2695 memcpy (syms, static_syms, static_count * sizeof (*syms));
2696 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2697 }
2698 else if (!relocatable && static_count == 0)
2699 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2700 else
2701 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2702
90e3cdf2
JJ		 2703 synthetic_opd = opd;
2704 synthetic_relocatable = relocatable;
595da8c5 2705 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2706
c9727e01
AM		 2707 if (!relocatable && symcount > 1)
2708 {
2709 long j;
2710 /* Trim duplicate syms, since we may have merged the normal and
2711 dynamic symbols. Actually, we only care about syms that have
2712 different values, so trim any with the same value. */
2713 for (i = 1, j = 1; i < symcount; ++i)
2714 if (syms[i - 1]->value + syms[i - 1]->section->vma
2715 != syms[i]->value + syms[i]->section->vma)
2716 syms[j++] = syms[i];
2717 symcount = j;
2718 }
2719
699733f6
AM		 2720 i = 0;
2721 if (syms[i]->section == opd)
2722 ++i;
2723 codesecsym = i;
90e3cdf2 2724
699733f6
AM		 2725 for (; i < symcount; ++i)
2726 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2727 != (SEC_CODE | SEC_ALLOC))
2728 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2729 break;
2730 codesecsymend = i;
90e3cdf2 2731
699733f6
AM		 2732 for (; i < symcount; ++i)
2733 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2734 break;
2735 secsymend = i;
90e3cdf2 2736
699733f6
AM		 2737 for (; i < symcount; ++i)
2738 if (syms[i]->section != opd)
2739 break;
2740 opdsymend = i;
90e3cdf2 2741
699733f6
AM		 2742 for (; i < symcount; ++i)
2743 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2744 != (SEC_CODE | SEC_ALLOC))
2745 break;
2746 symcount = i;
2747
c9727e01 2748 count = 0;
699733f6 2749 if (opdsymend == secsymend)
c9727e01 2750 goto done;
90e3cdf2 2751
699733f6 2752 if (relocatable)
90e3cdf2 2753 {
699733f6
AM		 2754 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2755 arelent *r;
2756 size_t size;
2757 long relcount;
90e3cdf2 2758
699733f6 2759 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2760 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2761 if (relcount == 0)
c9727e01 2762 goto done;
90e3cdf2 2763
7356fed5
AM		 2764 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2765 {
2766 count = -1;
2767 goto done;
2768 }
2769
699733f6 2770 size = 0;
595da8c5 2771 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2772 {
2773 asymbol *sym;
90e3cdf2 2774
595da8c5 2775 while (r < opd->relocation + relcount
699733f6
AM		 2776 && r->address < syms[i]->value + opd->vma)
2777 ++r;
90e3cdf2 2778
595da8c5 2779 if (r == opd->relocation + relcount)
699733f6 2780 break;
90e3cdf2 2781
699733f6
AM		 2782 if (r->address != syms[i]->value + opd->vma)
2783 continue;
90e3cdf2 2784
699733f6
AM		 2785 if (r->howto->type != R_PPC64_ADDR64)
2786 continue;
90e3cdf2 2787
699733f6
AM		 2788 sym = *r->sym_ptr_ptr;
2789 if (!sym_exists_at (syms, opdsymend, symcount,
2790 sym->section->id, sym->value + r->addend))
2791 {
2792 ++count;
2793 size += sizeof (asymbol);
2794 size += strlen (syms[i]->name) + 2;
2795 }
2796 }
90e3cdf2 2797
699733f6
AM		 2798 s = *ret = bfd_malloc (size);
2799 if (s == NULL)
2800 {
7356fed5 2801 count = -1;
c9727e01 2802 goto done;
699733f6 2803 }
90e3cdf2 2804
699733f6 2805 names = (char *) (s + count);
90e3cdf2 2806
595da8c5 2807 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2808 {
699733f6 2809 asymbol *sym;
90e3cdf2 2810
595da8c5 2811 while (r < opd->relocation + relcount
699733f6
AM		 2812 && r->address < syms[i]->value + opd->vma)
2813 ++r;
90e3cdf2 2814
595da8c5 2815 if (r == opd->relocation + relcount)
699733f6
AM		 2816 break;
2817
2818 if (r->address != syms[i]->value + opd->vma)
2819 continue;
2820
2821 if (r->howto->type != R_PPC64_ADDR64)
2822 continue;
90e3cdf2 2823
699733f6
AM		 2824 sym = *r->sym_ptr_ptr;
2825 if (!sym_exists_at (syms, opdsymend, symcount,
2826 sym->section->id, sym->value + r->addend))
2827 {
2828 size_t len;
2829
2830 *s = *syms[i];
2831 s->section = sym->section;
2832 s->value = sym->value + r->addend;
2833 s->name = names;
2834 *names++ = '.';
2835 len = strlen (syms[i]->name);
2836 memcpy (names, syms[i]->name, len + 1);
2837 names += len + 1;
2838 s++;
2839 }
2840 }
2841 }
2842 else
90e3cdf2 2843 {
699733f6
AM		 2844 bfd_byte *contents;
2845 size_t size;
90e3cdf2 2846
699733f6
AM		 2847 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2848 {
2849 if (contents)
c9727e01
AM		 2850 {
2851 free_contents_and_exit:
2852 free (contents);
2853 }
7356fed5 2854 count = -1;
c9727e01 2855 goto done;
699733f6 2856 }
90e3cdf2 2857
699733f6
AM		 2858 size = 0;
2859 for (i = secsymend; i < opdsymend; ++i)
2860 {
2861 bfd_vma ent;
90e3cdf2 2862
699733f6
AM		 2863 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2864 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2865 {
2866 ++count;
2867 size += sizeof (asymbol);
2868 size += strlen (syms[i]->name) + 2;
2869 }
2870 }
90e3cdf2 2871
699733f6
AM		 2872 s = *ret = bfd_malloc (size);
2873 if (s == NULL)
7356fed5 2874 goto free_contents_and_exit;
90e3cdf2 2875
699733f6 2876 names = (char *) (s + count);
90e3cdf2 2877
699733f6 2878 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2879 {
699733f6 2880 bfd_vma ent;
90e3cdf2 2881
699733f6
AM		 2882 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2883 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2884 {
c9727e01 2885 long lo, hi;
699733f6 2886 size_t len;
c9727e01 2887 asection *sec = abfd->sections;
90e3cdf2 2888
699733f6
AM		 2889 *s = *syms[i];
2890 lo = codesecsym;
2891 hi = codesecsymend;
2892 while (lo < hi)
2893 {
c9727e01 2894 long mid = (lo + hi) >> 1;
699733f6
AM		 2895 if (syms[mid]->section->vma < ent)
2896 lo = mid + 1;
2897 else if (syms[mid]->section->vma > ent)
2898 hi = mid;
2899 else
c9727e01
AM		 2900 {
2901 sec = syms[mid]->section;
2902 break;
2903 }
699733f6
AM		 2904 }
2905
c9727e01 2906 if (lo >= hi && lo > codesecsym)
699733f6 2907 sec = syms[lo - 1]->section;
699733f6
AM		 2908
2909 for (; sec != NULL; sec = sec->next)
2910 {
2911 if (sec->vma > ent)
2912 break;
2913 if ((sec->flags & SEC_ALLOC) == 0
2914 || (sec->flags & SEC_LOAD) == 0)
2915 break;
2916 if ((sec->flags & SEC_CODE) != 0)
2917 s->section = sec;
2918 }
2919 s->value = ent - s->section->vma;
2920 s->name = names;
2921 *names++ = '.';
2922 len = strlen (syms[i]->name);
2923 memcpy (names, syms[i]->name, len + 1);
2924 names += len + 1;
2925 s++;
90e3cdf2 2926 }
90e3cdf2 2927 }
699733f6 2928 free (contents);
90e3cdf2
JJ		 2929 }
2930
c9727e01 2931 done:
a7535cf3 2932 free (syms);
90e3cdf2
JJ		 2933 return count;
2934}
5bd4f169 2935\f
65f38f15
AM		 2936/* The following functions are specific to the ELF linker, while
2937 functions above are used generally. Those named ppc64_elf_* are
2938 called by the main ELF linker code. They appear in this file more
2939 or less in the order in which they are called. eg.
2940 ppc64_elf_check_relocs is called early in the link process,
2941 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2942 called.
2943
2944 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2945 functions have both a function code symbol and a function descriptor
2946 symbol. A call to foo in a relocatable object file looks like:
2947
2948 . .text
2949 . x:
2950 . bl .foo
2951 . nop
2952
2953 The function definition in another object file might be:
2954
2955 . .section .opd
2956 . foo: .quad .foo
2957 . .quad .TOC.@tocbase
2958 . .quad 0
2959 .
2960 . .text
2961 . .foo: blr
2962
2963 When the linker resolves the call during a static link, the branch
2964 unsurprisingly just goes to .foo and the .opd information is unused.
2965 If the function definition is in a shared library, things are a little
2966 different: The call goes via a plt call stub, the opd information gets
2967 copied to the plt, and the linker patches the nop.
2968
2969 . x:
2970 . bl .foo_stub
2971 . ld 2,40(1)
2972 .
2973 .
2974 . .foo_stub:
2975 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 2976 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 2977 . std 2,40(1) # this is the general idea
2978 . ld 11,0(12)
2979 . ld 2,8(12)
2980 . mtctr 11
2981 . ld 11,16(12)
2982 . bctr
2983 .
2984 . .section .plt
2985 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2986
2987 The "reloc ()" notation is supposed to indicate that the linker emits
2988 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2989 copying.
2990
2991 What are the difficulties here? Well, firstly, the relocations
2992 examined by the linker in check_relocs are against the function code
2993 sym .foo, while the dynamic relocation in the plt is emitted against
2994 the function descriptor symbol, foo. Somewhere along the line, we need
2995 to carefully copy dynamic link information from one symbol to the other.
2996 Secondly, the generic part of the elf linker will make .foo a dynamic
2997 symbol as is normal for most other backends. We need foo dynamic
2998 instead, at least for an application final link. However, when
2999 creating a shared library containing foo, we need to have both symbols
3000 dynamic so that references to .foo are satisfied during the early
3001 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3002 definition from some other object, eg. a static library.
3003
3004 Update: As of August 2004, we support a new convention. Function
3005 calls may use the function descriptor symbol, ie. "bl foo". This
3006 behaves exactly as "bl .foo". */
65f38f15
AM		 3007
3008/* The linker needs to keep track of the number of relocs that it
3009 decides to copy as dynamic relocs in check_relocs for each symbol.
3010 This is so that it can later discard them if they are found to be
3011 unnecessary. We store the information in a field extending the
3012 regular ELF linker hash table. */
3013
3014struct ppc_dyn_relocs
3015{
3016 struct ppc_dyn_relocs *next;
3017
3018 /* The input section of the reloc. */
3019 asection *sec;
3020
3021 /* Total number of relocs copied for the input section. */
3022 bfd_size_type count;
3023
3024 /* Number of pc-relative relocs copied for the input section. */
3025 bfd_size_type pc_count;
3026};
3027
411e1bfb
AM		 3028/* Track GOT entries needed for a given symbol. We might need more
3029 than one got entry per symbol. */
3030struct got_entry
3031{
3032 struct got_entry *next;
3033
e7b938ca 3034 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3035 bfd_vma addend;
3036
e717da7e
AM		 3037 /* Unlike other ELF targets, we use separate GOT entries for the same
3038 symbol referenced from different input files. This is to support
3039 automatic multiple TOC/GOT sections, where the TOC base can vary
3040 from one input file to another.
3041
3042 Point to the BFD owning this GOT entry. */
3043 bfd *owner;
3044
3045 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3046 TLS_TPREL or TLS_DTPREL for tls entries. */
3047 char tls_type;
3048
e7b938ca 3049 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3050 union
3051 {
3052 bfd_signed_vma refcount;
3053 bfd_vma offset;
3054 } got;
411e1bfb
AM		 3055};
3056
3057/* The same for PLT. */
3058struct plt_entry
3059{
3060 struct plt_entry *next;
3061
3062 bfd_vma addend;
3063
3064 union
3065 {
3066 bfd_signed_vma refcount;
3067 bfd_vma offset;
3068 } plt;
3069};
3070
65f38f15 3071/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3072 selects those that must be copied when linking a shared library,
3073 even when the symbol is local. */
65f38f15 3074
411e1bfb 3075#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3076 ((RTYPE) != R_PPC64_REL32 \
3077 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3078 && (RTYPE) != R_PPC64_REL30)
65f38f15 3079
f4656909
AM		 3080/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3081 copying dynamic variables from a shared lib into an app's dynbss
3082 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3083 shared lib. With code that gcc generates, it's vital that this be
3084 enabled; In the PowerPC64 ABI, the address of a function is actually
3085 the address of a function descriptor, which resides in the .opd
3086 section. gcc uses the descriptor directly rather than going via the
3087 GOT as some other ABI's do, which means that initialized function
3088 pointers must reference the descriptor. Thus, a function pointer
3089 initialized to the address of a function in a shared library will
3090 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3091 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3092 presents a problem as a plt entry for that function is also
3093 initialized from the function descriptor symbol and the copy reloc
3094 may not be initialized first. */
a23b6845 3095#define ELIMINATE_COPY_RELOCS 1
f4656909 3096
721956f4
AM		 3097/* Section name for stubs is the associated section name plus this
3098 string. */
3099#define STUB_SUFFIX ".stub"
3100
3101/* Linker stubs.
3102 ppc_stub_long_branch:
3103 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3104 destination, but a 24 bit branch in a stub section will reach.
3105 . b dest
3106
3107 ppc_stub_plt_branch:
3108 Similar to the above, but a 24 bit branch in the stub section won't
3109 reach its destination.
87e226ce
AM		 3110 . addis %r12,%r2,xxx@toc@ha
3111 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3112 . mtctr %r11
3113 . bctr
3114
3115 ppc_stub_plt_call:
2c66dc6c
AM		 3116 Used to call a function in a shared library. If it so happens that
3117 the plt entry referenced crosses a 64k boundary, then an extra
3118 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3119 xxx+16 as appropriate.
87e226ce 3120 . addis %r12,%r2,xxx@toc@ha
721956f4 3121 . std %r2,40(%r1)
87e226ce
AM		 3122 . ld %r11,xxx+0@toc@l(%r12)
3123 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3124 . mtctr %r11
87e226ce 3125 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3126 . bctr
ad8e1ba5
AM		 3127
3128 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3129 code to adjust the value and save r2 to support multiple toc sections.
3130 A ppc_stub_long_branch with an r2 offset looks like:
3131 . std %r2,40(%r1)
3132 . addis %r2,%r2,off@ha
3133 . addi %r2,%r2,off@l
3134 . b dest
3135
3136 A ppc_stub_plt_branch with an r2 offset looks like:
3137 . std %r2,40(%r1)
3138 . addis %r12,%r2,xxx@toc@ha
3139 . ld %r11,xxx@toc@l(%r12)
3140 . addis %r2,%r2,off@ha
3141 . addi %r2,%r2,off@l
3142 . mtctr %r11
3143 . bctr
721956f4
AM		 3144*/
3145
3146enum ppc_stub_type {
3147 ppc_stub_none,
3148 ppc_stub_long_branch,
ad8e1ba5 3149 ppc_stub_long_branch_r2off,
721956f4 3150 ppc_stub_plt_branch,
ad8e1ba5 3151 ppc_stub_plt_branch_r2off,
721956f4
AM		 3152 ppc_stub_plt_call
3153};
3154
3155struct ppc_stub_hash_entry {
3156
3157 /* Base hash table entry structure. */
3158 struct bfd_hash_entry root;
3159
ad8e1ba5
AM		 3160 enum ppc_stub_type stub_type;
3161
721956f4
AM		 3162 /* The stub section. */
3163 asection *stub_sec;
3164
3165 /* Offset within stub_sec of the beginning of this stub. */
3166 bfd_vma stub_offset;
3167
3168 /* Given the symbol's value and its section we can determine its final
3169 value when building the stubs (so the stub knows where to jump. */
3170 bfd_vma target_value;
3171 asection *target_section;
3172
721956f4
AM		 3173 /* The symbol table entry, if any, that this was derived from. */
3174 struct ppc_link_hash_entry *h;
3175
411e1bfb
AM		 3176 /* And the reloc addend that this was derived from. */
3177 bfd_vma addend;
3178
721956f4
AM		 3179 /* Where this stub is being called from, or, in the case of combined
3180 stub sections, the first input section in the group. */
3181 asection *id_sec;
3182};
3183
3184struct ppc_branch_hash_entry {
3185
3186 /* Base hash table entry structure. */
3187 struct bfd_hash_entry root;
3188
3189 /* Offset within .branch_lt. */
3190 unsigned int offset;
3191
3192 /* Generation marker. */
3193 unsigned int iter;
3194};
65f38f15
AM		 3195
3196struct ppc_link_hash_entry
3197{
3198 struct elf_link_hash_entry elf;
3199
721956f4
AM		 3200 /* A pointer to the most recently used stub hash entry against this
3201 symbol. */
3202 struct ppc_stub_hash_entry *stub_cache;
3203
65f38f15
AM		 3204 /* Track dynamic relocs copied for this symbol. */
3205 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3206
721956f4 3207 /* Link between function code and descriptor symbols. */
34814b9f 3208 struct ppc_link_hash_entry *oh;
721956f4 3209
e86ce104
AM		 3210 /* Flag function code and descriptor symbols. */
3211 unsigned int is_func:1;
3212 unsigned int is_func_descriptor:1;
908b32fc 3213 unsigned int fake:1;
411e1bfb 3214
c5614fa4
AM		 3215 /* Whether global opd/toc sym has been adjusted or not.
3216 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3217 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3218 unsigned int adjust_done:1;
3219
99877b66
AM		 3220 /* Set if we twiddled this symbol to weak at some stage. */
3221 unsigned int was_undefined:1;
3222
411e1bfb 3223 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3224 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3225 corresponding relocs are encountered during check_relocs.
3226 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3227 indicate the corresponding GOT entry type is not needed.
3228 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3229 a TPREL one. We use a separate flag rather than setting TPREL
3230 just for convenience in distinguishing the two cases. */
3231#define TLS_GD 1 /* GD reloc. */
3232#define TLS_LD 2 /* LD reloc. */
3233#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3234#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3235#define TLS_TLS 16 /* Any TLS reloc. */
3236#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3237#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3238 char tls_mask;
65f38f15
AM		 3239};
3240
3241/* ppc64 ELF linker hash table. */
3242
3243struct ppc_link_hash_table
3244{
3245 struct elf_link_hash_table elf;
3246
721956f4
AM		 3247 /* The stub hash table. */
3248 struct bfd_hash_table stub_hash_table;
3249
3250 /* Another hash table for plt_branch stubs. */
3251 struct bfd_hash_table branch_hash_table;
3252
3253 /* Linker stub bfd. */
3254 bfd *stub_bfd;
3255
3256 /* Linker call-backs. */
4ce794b7
AM		 3257 asection * (*add_stub_section) (const char *, asection *);
3258 void (*layout_sections_again) (void);
721956f4
AM		 3259
3260 /* Array to keep track of which stub sections have been created, and
3261 information on stub grouping. */
3262 struct map_stub {
3263 /* This is the section to which stubs in the group will be attached. */
3264 asection *link_sec;
3265 /* The stub section. */
3266 asection *stub_sec;
ad8e1ba5
AM		 3267 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3268 bfd_vma toc_off;
721956f4
AM		 3269 } *stub_group;
3270
ad8e1ba5
AM		 3271 /* Temp used when calculating TOC pointers. */
3272 bfd_vma toc_curr;
3273
8f3bab57
AM		 3274 /* Highest input section id. */
3275 int top_id;
3276
734b6cf9
AM		 3277 /* Highest output section index. */
3278 int top_index;
3279
3280 /* List of input sections for each output section. */
3281 asection **input_list;
721956f4 3282
65f38f15 3283 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3284 asection *got;
4ce794b7
AM		 3285 asection *plt;
3286 asection *relplt;
3287 asection *dynbss;
3288 asection *relbss;
3289 asection *glink;
82bd7b59 3290 asection *sfpr;
4ce794b7
AM		 3291 asection *brlt;
3292 asection *relbrlt;
ec338859 3293
8387904d
AM		 3294 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3295 struct ppc_link_hash_entry *tls_get_addr;
3296 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3297
9b5ecbd0
AM		 3298 /* Statistics. */
3299 unsigned long stub_count[ppc_stub_plt_call];
3300
ee75fd95
AM		 3301 /* Number of stubs against global syms. */
3302 unsigned long stub_globals;
3303
ad8e1ba5 3304 /* Set if we should emit symbols for stubs. */
99877b66 3305 unsigned int emit_stub_syms:1;
ad8e1ba5 3306
4c52953f
AM		 3307 /* Support for multiple toc sections. */
3308 unsigned int no_multi_toc:1;
3309 unsigned int multi_toc_needed:1;
3310
5d1634d7 3311 /* Set on error. */
99877b66 3312 unsigned int stub_error:1;
721956f4
AM		 3313
3314 /* Flag set when small branches are detected. Used to
3315 select suitable defaults for the stub group size. */
99877b66
AM		 3316 unsigned int has_14bit_branch:1;
3317
3318 /* Temp used by ppc64_elf_check_directives. */
3319 unsigned int twiddled_syms:1;
721956f4
AM		 3320
3321 /* Incremented every time we size stubs. */
3322 unsigned int stub_iteration;
5d1634d7 3323
ec338859
AM		 3324 /* Small local sym to section mapping cache. */
3325 struct sym_sec_cache sym_sec;
65f38f15
AM		 3326};
3327
4c52953f
AM		 3328/* Rename some of the generic section flags to better document how they
3329 are used here. */
3330#define has_toc_reloc has_gp_reloc
3331#define makes_toc_func_call need_finalize_relax
3332#define call_check_in_progress reloc_done
3333
65f38f15
AM		 3334/* Get the ppc64 ELF linker hash table from a link_info structure. */
3335
3336#define ppc_hash_table(p) \
3337 ((struct ppc_link_hash_table *) ((p)->hash))
3338
721956f4
AM		 3339#define ppc_stub_hash_lookup(table, string, create, copy) \
3340 ((struct ppc_stub_hash_entry *) \
3341 bfd_hash_lookup ((table), (string), (create), (copy)))
3342
3343#define ppc_branch_hash_lookup(table, string, create, copy) \
3344 ((struct ppc_branch_hash_entry *) \
3345 bfd_hash_lookup ((table), (string), (create), (copy)))
3346
3347/* Create an entry in the stub hash table. */
3348
3349static struct bfd_hash_entry *
4ce794b7
AM		 3350stub_hash_newfunc (struct bfd_hash_entry *entry,
3351 struct bfd_hash_table *table,
3352 const char *string)
721956f4
AM		 3353{
3354 /* Allocate the structure if it has not already been allocated by a
3355 subclass. */
3356 if (entry == NULL)
3357 {
3358 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3359 if (entry == NULL)
3360 return entry;
3361 }
3362
3363 /* Call the allocation method of the superclass. */
3364 entry = bfd_hash_newfunc (entry, table, string);
3365 if (entry != NULL)
3366 {
3367 struct ppc_stub_hash_entry *eh;
3368
3369 /* Initialize the local fields. */
3370 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3371 eh->stub_type = ppc_stub_none;
721956f4
AM		 3372 eh->stub_sec = NULL;
3373 eh->stub_offset = 0;
3374 eh->target_value = 0;
3375 eh->target_section = NULL;
721956f4
AM		 3376 eh->h = NULL;
3377 eh->id_sec = NULL;
3378 }
3379
3380 return entry;
3381}
3382
3383/* Create an entry in the branch hash table. */
3384
3385static struct bfd_hash_entry *
4ce794b7
AM		 3386branch_hash_newfunc (struct bfd_hash_entry *entry,
3387 struct bfd_hash_table *table,
3388 const char *string)
721956f4
AM		 3389{
3390 /* Allocate the structure if it has not already been allocated by a
3391 subclass. */
3392 if (entry == NULL)
3393 {
3394 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3395 if (entry == NULL)
3396 return entry;
3397 }
3398
3399 /* Call the allocation method of the superclass. */
3400 entry = bfd_hash_newfunc (entry, table, string);
3401 if (entry != NULL)
3402 {
3403 struct ppc_branch_hash_entry *eh;
3404
3405 /* Initialize the local fields. */
3406 eh = (struct ppc_branch_hash_entry *) entry;
3407 eh->offset = 0;
3408 eh->iter = 0;
3409 }
3410
3411 return entry;
3412}
3413
65f38f15
AM		 3414/* Create an entry in a ppc64 ELF linker hash table. */
3415
3416static struct bfd_hash_entry *
4ce794b7
AM		 3417link_hash_newfunc (struct bfd_hash_entry *entry,
3418 struct bfd_hash_table *table,
3419 const char *string)
65f38f15
AM		 3420{
3421 /* Allocate the structure if it has not already been allocated by a
3422 subclass. */
3423 if (entry == NULL)
3424 {
3425 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3426 if (entry == NULL)
3427 return entry;
3428 }
3429
3430 /* Call the allocation method of the superclass. */
3431 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3432 if (entry != NULL)
3433 {
3434 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3435
908b32fc
AM		 3436 memset (&eh->stub_cache, 0,
3437 (sizeof (struct ppc_link_hash_entry)
3438 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3439 }
3440
3441 return entry;
3442}
3443
3444/* Create a ppc64 ELF linker hash table. */
3445
3446static struct bfd_link_hash_table *
4ce794b7 3447ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3448{
3449 struct ppc_link_hash_table *htab;
3450 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3451
4ce794b7 3452 htab = bfd_zmalloc (amt);
65f38f15
AM		 3453 if (htab == NULL)
3454 return NULL;
3455
3456 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3457 {
e2d34d7d 3458 free (htab);
65f38f15
AM		 3459 return NULL;
3460 }
3461
721956f4
AM		 3462 /* Init the stub hash table too. */
3463 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3464 return NULL;
3465
3466 /* And the branch hash table. */
3467 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3468 return NULL;
3469
3254fd24
AM		 3470 /* Initializing two fields of the union is just cosmetic. We really
3471 only care about glist, but when compiled on a 32-bit host the
3472 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3473 debugger inspection of these fields look nicer. */
3474 htab->elf.init_refcount.refcount = 0;
3475 htab->elf.init_refcount.glist = NULL;
3476 htab->elf.init_offset.offset = 0;
3477 htab->elf.init_offset.glist = NULL;
3478
65f38f15
AM		 3479 return &htab->elf.root;
3480}
3481
721956f4
AM		 3482/* Free the derived linker hash table. */
3483
3484static void
4ce794b7 3485ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3486{
3487 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3488
3489 bfd_hash_table_free (&ret->stub_hash_table);
3490 bfd_hash_table_free (&ret->branch_hash_table);
3491 _bfd_generic_link_hash_table_free (hash);
3492}
3493
e717da7e
AM		 3494/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3495
3496void
3497ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3498{
3499 struct ppc_link_hash_table *htab;
3500
3501 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3502
3503/* Always hook our dynamic sections into the first bfd, which is the
3504 linker created stub bfd. This ensures that the GOT header is at
3505 the start of the output TOC section. */
3506 htab = ppc_hash_table (info);
3507 htab->stub_bfd = abfd;
3508 htab->elf.dynobj = abfd;
3509}
3510
721956f4
AM		 3511/* Build a name for an entry in the stub hash table. */
3512
3513static char *
4ce794b7
AM		 3514ppc_stub_name (const asection *input_section,
3515 const asection *sym_sec,
3516 const struct ppc_link_hash_entry *h,
3517 const Elf_Internal_Rela *rel)
721956f4
AM		 3518{
3519 char *stub_name;
3520 bfd_size_type len;
3521
3522 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3523 offsets from a sym as a branch target? In fact, we could
3524 probably assume the addend is always zero. */
3525 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3526
3527 if (h)
3528 {
3529 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3530 stub_name = bfd_malloc (len);
3531 if (stub_name != NULL)
3532 {
97b639ba 3533 sprintf (stub_name, "%08x.%s+%x",
721956f4
AM		 3534 input_section->id & 0xffffffff,
3535 h->elf.root.root.string,
3536 (int) rel->r_addend & 0xffffffff);
3537 }
3538 }
3539 else
3540 {
ad8e1ba5 3541 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4
AM		 3542 stub_name = bfd_malloc (len);
3543 if (stub_name != NULL)
3544 {
97b639ba 3545 sprintf (stub_name, "%08x.%x:%x+%x",
721956f4
AM		 3546 input_section->id & 0xffffffff,
3547 sym_sec->id & 0xffffffff,
3548 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3549 (int) rel->r_addend & 0xffffffff);
3550 }
3551 }
ee75fd95
AM		 3552 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3553 stub_name[len - 2] = 0;
721956f4
AM		 3554 return stub_name;
3555}
3556
3557/* Look up an entry in the stub hash. Stub entries are cached because
3558 creating the stub name takes a bit of time. */
3559
3560static struct ppc_stub_hash_entry *
4ce794b7
AM		 3561ppc_get_stub_entry (const asection *input_section,
3562 const asection *sym_sec,
039b3fef 3563 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3564 const Elf_Internal_Rela *rel,
3565 struct ppc_link_hash_table *htab)
721956f4
AM		 3566{
3567 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3568 const asection *id_sec;
3569
3570 /* If this input section is part of a group of sections sharing one
3571 stub section, then use the id of the first section in the group.
3572 Stub names need to include a section id, as there may well be
3573 more than one stub used to reach say, printf, and we need to
3574 distinguish between them. */
3575 id_sec = htab->stub_group[input_section->id].link_sec;
3576
3577 if (h != NULL && h->stub_cache != NULL
3578 && h->stub_cache->h == h
3579 && h->stub_cache->id_sec == id_sec)
3580 {
3581 stub_entry = h->stub_cache;
3582 }
3583 else
3584 {
3585 char *stub_name;
3586
3587 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3588 if (stub_name == NULL)
3589 return NULL;
3590
3591 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3592 stub_name, FALSE, FALSE);
721956f4
AM		 3593 if (h != NULL)
3594 h->stub_cache = stub_entry;
3595
3596 free (stub_name);
3597 }
3598
3599 return stub_entry;
3600}
3601
3602/* Add a new stub entry to the stub hash. Not all fields of the new
3603 stub entry are initialised. */
3604
3605static struct ppc_stub_hash_entry *
4ce794b7
AM		 3606ppc_add_stub (const char *stub_name,
3607 asection *section,
3608 struct ppc_link_hash_table *htab)
721956f4
AM		 3609{
3610 asection *link_sec;
3611 asection *stub_sec;
3612 struct ppc_stub_hash_entry *stub_entry;
3613
3614 link_sec = htab->stub_group[section->id].link_sec;
3615 stub_sec = htab->stub_group[section->id].stub_sec;
3616 if (stub_sec == NULL)
3617 {
3618 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3619 if (stub_sec == NULL)
3620 {
d4c88bbb 3621 size_t namelen;
721956f4
AM		 3622 bfd_size_type len;
3623 char *s_name;
3624
d4c88bbb
AM		 3625 namelen = strlen (link_sec->name);
3626 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3627 s_name = bfd_alloc (htab->stub_bfd, len);
3628 if (s_name == NULL)
3629 return NULL;
3630
d4c88bbb
AM		 3631 memcpy (s_name, link_sec->name, namelen);
3632 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3633 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3634 if (stub_sec == NULL)
3635 return NULL;
3636 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3637 }
3638 htab->stub_group[section->id].stub_sec = stub_sec;
3639 }
3640
3641 /* Enter this entry into the linker stub hash table. */
3642 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3643 TRUE, FALSE);
721956f4
AM		 3644 if (stub_entry == NULL)
3645 {
d003868e
AM		 3646 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3647 section->owner, stub_name);
721956f4
AM		 3648 return NULL;
3649 }
3650
3651 stub_entry->stub_sec = stub_sec;
3652 stub_entry->stub_offset = 0;
3653 stub_entry->id_sec = link_sec;
3654 return stub_entry;
3655}
3656
82bd7b59
AM		 3657/* Create sections for linker generated code. */
3658
b34976b6 3659static bfd_boolean
4ce794b7 3660create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3661{
3662 struct ppc_link_hash_table *htab;
3663 flagword flags;
3664
3665 htab = ppc_hash_table (info);
3666
3667 /* Create .sfpr for code to save and restore fp regs. */
3668 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3669 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 3670 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 3671 if (htab->sfpr == NULL
3672 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3673 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3674 return FALSE;
82bd7b59 3675
721956f4 3676 /* Create .glink for lazy dynamic linking support. */
4ce794b7
AM		 3677 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3678 if (htab->glink == NULL
3679 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3680 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3681 return FALSE;
82bd7b59 3682
721956f4
AM		 3683 /* Create .branch_lt for plt_branch stubs. */
3684 flags = (SEC_ALLOC | SEC_LOAD
3685 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3686 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3687 if (htab->brlt == NULL
3688 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3689 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3690 return FALSE;
721956f4 3691
ee75fd95 3692 if (info->shared || info->emitrelocations)
721956f4
AM		 3693 {
3694 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3695 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3696 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3697 if (!htab->relbrlt
3698 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3699 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3700 return FALSE;
721956f4 3701 }
b34976b6 3702 return TRUE;
82bd7b59
AM		 3703}
3704
e717da7e
AM		 3705/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3706 not already done. */
65f38f15 3707
b34976b6 3708static bfd_boolean
e717da7e 3709create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3710{
e717da7e
AM		 3711 asection *got, *relgot;
3712 flagword flags;
3713 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3714
4ce794b7 3715 if (!htab->got)
e717da7e
AM		 3716 {
3717 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3718 return FALSE;
3719
3720 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3721 if (!htab->got)
3722 abort ();
3723 }
3724
3725 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3726 | SEC_LINKER_CREATED);
3727
3728 got = bfd_make_section (abfd, ".got");
3729 if (!got
3730 || !bfd_set_section_flags (abfd, got, flags)
3731 || !bfd_set_section_alignment (abfd, got, 3))
3732 return FALSE;
65f38f15 3733
e717da7e
AM		 3734 relgot = bfd_make_section (abfd, ".rela.got");
3735 if (!relgot
3736 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3737 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3738 return FALSE;
e717da7e
AM		 3739
3740 ppc64_elf_tdata (abfd)->got = got;
3741 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3742 return TRUE;
65f38f15 3743}
5bd4f169 3744
82bd7b59 3745/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3746
b34976b6 3747static bfd_boolean
4ce794b7 3748ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3749{
65f38f15 3750 struct ppc_link_hash_table *htab;
5bd4f169 3751
65f38f15 3752 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3753 return FALSE;
65f38f15 3754
e717da7e
AM		 3755 htab = ppc_hash_table (info);
3756 if (!htab->got)
3757 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3758 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3759 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3760 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3761 if (!info->shared)
4ce794b7 3762 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3763
e717da7e 3764 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3765 || (!info->shared && !htab->relbss))
65f38f15
AM		 3766 abort ();
3767
b34976b6 3768 return TRUE;
5bd4f169
AM		 3769}
3770
40d16e0b
AM		 3771/* Merge PLT info on FROM with that on TO. */
3772
3773static void
3774move_plt_plist (struct ppc_link_hash_entry *from,
3775 struct ppc_link_hash_entry *to)
3776{
3777 if (from->elf.plt.plist != NULL)
3778 {
3779 if (to->elf.plt.plist != NULL)
3780 {
3781 struct plt_entry **entp;
3782 struct plt_entry *ent;
3783
3784 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3785 {
3786 struct plt_entry *dent;
3787
3788 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3789 if (dent->addend == ent->addend)
3790 {
3791 dent->plt.refcount += ent->plt.refcount;
3792 *entp = ent->next;
3793 break;
3794 }
3795 if (dent == NULL)
3796 entp = &ent->next;
3797 }
3798 *entp = to->elf.plt.plist;
3799 }
3800
3801 to->elf.plt.plist = from->elf.plt.plist;
3802 from->elf.plt.plist = NULL;
3803 }
3804}
3805
65f38f15
AM		 3806/* Copy the extra info we tack onto an elf_link_hash_entry. */
3807
3808static void
9c5bfbb7
AM		 3809ppc64_elf_copy_indirect_symbol
3810 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3811 struct elf_link_hash_entry *dir,
3812 struct elf_link_hash_entry *ind)
65f38f15
AM		 3813{
3814 struct ppc_link_hash_entry *edir, *eind;
3815
3816 edir = (struct ppc_link_hash_entry *) dir;
3817 eind = (struct ppc_link_hash_entry *) ind;
3818
411e1bfb 3819 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3820 if (eind->dyn_relocs != NULL)
65f38f15 3821 {
bbd7ec4a
AM		 3822 if (edir->dyn_relocs != NULL)
3823 {
3824 struct ppc_dyn_relocs **pp;
3825 struct ppc_dyn_relocs *p;
3826
411e1bfb 3827 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3828 abort ();
3829
3830 /* Add reloc counts against the weak sym to the strong sym
3831 list. Merge any entries against the same section. */
3832 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3833 {
3834 struct ppc_dyn_relocs *q;
3835
3836 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3837 if (q->sec == p->sec)
3838 {
3839 q->pc_count += p->pc_count;
3840 q->count += p->count;
3841 *pp = p->next;
3842 break;
3843 }
3844 if (q == NULL)
3845 pp = &p->next;
3846 }
3847 *pp = edir->dyn_relocs;
3848 }
3849
65f38f15
AM		 3850 edir->dyn_relocs = eind->dyn_relocs;
3851 eind->dyn_relocs = NULL;
3852 }
65f38f15 3853
6349e628
AM		 3854 edir->is_func |= eind->is_func;
3855 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3856 edir->tls_mask |= eind->tls_mask;
6349e628 3857
81848ca0 3858 /* If called to transfer flags for a weakdef during processing
f5385ebf 3859 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3860 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3861 if (!(ELIMINATE_COPY_RELOCS
3862 && eind->elf.root.type != bfd_link_hash_indirect
3863 && edir->elf.dynamic_adjusted))
3864 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3865
f5385ebf
AM		 3866 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3867 edir->elf.ref_regular |= eind->elf.ref_regular;
3868 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3869 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3870
3871 /* If we were called to copy over info for a weak sym, that's all. */
3872 if (eind->elf.root.type != bfd_link_hash_indirect)
3873 return;
3874
81848ca0
AM		 3875 /* Copy over got entries that we may have already seen to the
3876 symbol which just became indirect. */
411e1bfb
AM		 3877 if (eind->elf.got.glist != NULL)
3878 {
3879 if (edir->elf.got.glist != NULL)
3880 {
3881 struct got_entry **entp;
3882 struct got_entry *ent;
3883
3884 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3885 {
3886 struct got_entry *dent;
3887
3888 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3889 if (dent->addend == ent->addend
e717da7e 3890 && dent->owner == ent->owner
411e1bfb
AM		 3891 && dent->tls_type == ent->tls_type)
3892 {
3893 dent->got.refcount += ent->got.refcount;
3894 *entp = ent->next;
3895 break;
3896 }
3897 if (dent == NULL)
3898 entp = &ent->next;
3899 }
3900 *entp = edir->elf.got.glist;
3901 }
3902
3903 edir->elf.got.glist = eind->elf.got.glist;
3904 eind->elf.got.glist = NULL;
3905 }
3906
3907 /* And plt entries. */
40d16e0b 3908 move_plt_plist (eind, edir);
411e1bfb 3909
411e1bfb
AM		 3910 if (edir->elf.dynindx == -1)
3911 {
3912 edir->elf.dynindx = eind->elf.dynindx;
3913 edir->elf.dynstr_index = eind->elf.dynstr_index;
3914 eind->elf.dynindx = -1;
3915 eind->elf.dynstr_index = 0;
3916 }
3917 else
3918 BFD_ASSERT (eind->elf.dynindx == -1);
3919}
3920
8387904d
AM		 3921/* Find the function descriptor hash entry from the given function code
3922 hash entry FH. Link the entries via their OH fields. */
3923
3924static struct ppc_link_hash_entry *
3925get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3926{
3927 struct ppc_link_hash_entry *fdh = fh->oh;
3928
3929 if (fdh == NULL)
3930 {
3931 const char *fd_name = fh->elf.root.root.string + 1;
3932
3933 fdh = (struct ppc_link_hash_entry *)
3934 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3935 if (fdh != NULL)
3936 {
3937 fdh->is_func_descriptor = 1;
3938 fdh->oh = fh;
3939 fh->is_func = 1;
3940 fh->oh = fdh;
3941 }
3942 }
3943
3944 return fdh;
3945}
3946
bb700d78
AM		 3947/* Make a fake function descriptor sym for the code sym FH. */
3948
3949static struct ppc_link_hash_entry *
3950make_fdh (struct bfd_link_info *info,
908b32fc 3951 struct ppc_link_hash_entry *fh)
bb700d78
AM		 3952{
3953 bfd *abfd;
3954 asymbol *newsym;
3955 struct bfd_link_hash_entry *bh;
3956 struct ppc_link_hash_entry *fdh;
3957
3958 abfd = fh->elf.root.u.undef.abfd;
3959 newsym = bfd_make_empty_symbol (abfd);
3960 newsym->name = fh->elf.root.root.string + 1;
3961 newsym->section = bfd_und_section_ptr;
3962 newsym->value = 0;
908b32fc 3963 newsym->flags = BSF_WEAK;
bb700d78
AM		 3964
3965 bh = NULL;
3966 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3967 newsym->flags, newsym->section,
3968 newsym->value, NULL, FALSE, FALSE,
3969 &bh))
3970 return NULL;
3971
3972 fdh = (struct ppc_link_hash_entry *) bh;
3973 fdh->elf.non_elf = 0;
908b32fc
AM		 3974 fdh->fake = 1;
3975 fdh->is_func_descriptor = 1;
3976 fdh->oh = fh;
3977 fh->is_func = 1;
3978 fh->oh = fdh;
bb700d78
AM		 3979 return fdh;
3980}
3981
8387904d
AM		 3982/* Hacks to support old ABI code.
3983 When making function calls, old ABI code references function entry
3984 points (dot symbols), while new ABI code references the function
3985 descriptor symbol. We need to make any combination of reference and
3986 definition work together, without breaking archive linking.
3987
3988 For a defined function "foo" and an undefined call to "bar":
3989 An old object defines "foo" and ".foo", references ".bar" (possibly
3990 "bar" too).
3991 A new object defines "foo" and references "bar".
3992
3993 A new object thus has no problem with its undefined symbols being
3994 satisfied by definitions in an old object. On the other hand, the
3995 old object won't have ".bar" satisfied by a new object. */
3996
3997/* Fix function descriptor symbols defined in .opd sections to be
3998 function type. */
555cd476
AM		 3999
4000static bfd_boolean
4001ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4002 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4003 Elf_Internal_Sym *isym,
4004 const char **name ATTRIBUTE_UNUSED,
4005 flagword *flags ATTRIBUTE_UNUSED,
4006 asection **sec,
4007 bfd_vma *value ATTRIBUTE_UNUSED)
4008{
8843416a
AM		 4009 if (*sec != NULL
4010 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476
AM		 4011 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4012 return TRUE;
4013}
4014
8387904d 4015/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4016 inclusion of a new ABI object archive that defines "bar".
4017 NAME is a symbol defined in an archive. Return a symbol in the hash
4018 table that might be satisfied by the archive symbols. */
8387904d
AM		 4019
4020static struct elf_link_hash_entry *
4021ppc64_elf_archive_symbol_lookup (bfd *abfd,
4022 struct bfd_link_info *info,
4023 const char *name)
4024{
4025 struct elf_link_hash_entry *h;
4026 char *dot_name;
4027 size_t len;
4028
4029 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4030 if (h != NULL
4031 /* Don't return this sym if it is a fake function descriptor
4032 created by add_symbol_adjust. */
4033 && !(h->root.type == bfd_link_hash_undefweak
4034 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4035 return h;
4036
4037 if (name[0] == '.')
4038 return h;
4039
4040 len = strlen (name);
4041 dot_name = bfd_alloc (abfd, len + 2);
4042 if (dot_name == NULL)
4043 return (struct elf_link_hash_entry *) 0 - 1;
4044 dot_name[0] = '.';
4045 memcpy (dot_name + 1, name, len + 1);
4046 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4047 bfd_release (abfd, dot_name);
4048 return h;
4049}
4050
4051/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4052 new ABI object defines "bar". Well, at least, undefined dot symbols
4053 are made weak. This stops later archive searches from including an
4054 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4055 prevents the linker complaining about undefined symbols.
4056 We also check and correct mismatched symbol visibility here. The
4057 most restrictive visibility of the function descriptor and the
4058 function entry symbol is used. */
8387904d 4059
bb700d78
AM		 4060struct add_symbol_adjust_data
4061{
4062 struct bfd_link_info *info;
4063 bfd_boolean ok;
4064};
4065
8387904d
AM		 4066static bfd_boolean
4067add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4068{
bb700d78 4069 struct add_symbol_adjust_data *data;
8387904d 4070 struct ppc_link_hash_table *htab;
99877b66 4071 struct ppc_link_hash_entry *eh;
8387904d
AM		 4072 struct ppc_link_hash_entry *fdh;
4073
4074 if (h->root.type == bfd_link_hash_indirect)
4075 return TRUE;
4076
4077 if (h->root.type == bfd_link_hash_warning)
4078 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4079
35b0ce59 4080 if (h->root.root.string[0] != '.')
8387904d
AM		 4081 return TRUE;
4082
bb700d78
AM		 4083 data = inf;
4084 htab = ppc_hash_table (data->info);
99877b66
AM		 4085 eh = (struct ppc_link_hash_entry *) h;
4086 fdh = get_fdh (eh, htab);
bb700d78 4087 if (fdh == NULL
c4f68ce3 4088 && !data->info->relocatable
bb700d78
AM		 4089 && (eh->elf.root.type == bfd_link_hash_undefined
4090 || eh->elf.root.type == bfd_link_hash_undefweak)
4091 && eh->elf.ref_regular)
4092 {
4093 /* Make an undefweak function descriptor sym, which is enough to
4094 pull in an --as-needed shared lib, but won't cause link
4095 errors. Archives are handled elsewhere. */
908b32fc 4096 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4097 if (fdh == NULL)
4098 data->ok = FALSE;
4099 else
4100 fdh->elf.ref_regular = 1;
4101 }
c4f68ce3
AM		 4102 else if (fdh != NULL
4103 && (fdh->elf.root.type == bfd_link_hash_defined
4104 || fdh->elf.root.type == bfd_link_hash_defweak))
8387904d 4105 {
35b0ce59
AM		 4106 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4107 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4108 if (entry_vis < descr_vis)
4109 fdh->elf.other += entry_vis - descr_vis;
4110 else if (entry_vis > descr_vis)
4111 eh->elf.other += descr_vis - entry_vis;
4112
c4f68ce3 4113 if (eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4114 {
4115 eh->elf.root.type = bfd_link_hash_undefweak;
4116 eh->was_undefined = 1;
4117 htab->twiddled_syms = 1;
4118 }
8387904d 4119 }
99877b66 4120
8387904d
AM		 4121 return TRUE;
4122}
4123
4124static bfd_boolean
4125ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4126 struct bfd_link_info *info)
4127{
99877b66 4128 struct ppc_link_hash_table *htab;
bb700d78 4129 struct add_symbol_adjust_data data;
99877b66
AM		 4130
4131 htab = ppc_hash_table (info);
ee75fd95 4132 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4133 return TRUE;
4134
bb700d78
AM		 4135 data.info = info;
4136 data.ok = TRUE;
4137 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4138
4139 /* We need to fix the undefs list for any syms we have twiddled to
4140 undef_weak. */
4141 if (htab->twiddled_syms)
4142 {
77cfaee6 4143 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4144 htab->twiddled_syms = 0;
4145 }
bb700d78 4146 return data.ok;
8387904d
AM		 4147}
4148
411e1bfb 4149static bfd_boolean
4ce794b7
AM		 4150update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4151 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4152{
4153 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4154 char *local_got_tls_masks;
411e1bfb
AM		 4155
4156 if (local_got_ents == NULL)
4157 {
4158 bfd_size_type size = symtab_hdr->sh_info;
4159
e7b938ca 4160 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4161 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4162 if (local_got_ents == NULL)
4163 return FALSE;
4164 elf_local_got_ents (abfd) = local_got_ents;
4165 }
4166
4167 if ((tls_type & TLS_EXPLICIT) == 0)
4168 {
4169 struct got_entry *ent;
4170
4171 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4172 if (ent->addend == r_addend
4173 && ent->owner == abfd
4174 && ent->tls_type == tls_type)
411e1bfb
AM		 4175 break;
4176 if (ent == NULL)
4177 {
4178 bfd_size_type amt = sizeof (*ent);
4ce794b7 4179 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4180 if (ent == NULL)
4181 return FALSE;
4182 ent->next = local_got_ents[r_symndx];
4183 ent->addend = r_addend;
e717da7e 4184 ent->owner = abfd;
411e1bfb
AM		 4185 ent->tls_type = tls_type;
4186 ent->got.refcount = 0;
4187 local_got_ents[r_symndx] = ent;
4188 }
4189 ent->got.refcount += 1;
4190 }
4191
e7b938ca
AM		 4192 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4193 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4194 return TRUE;
65f38f15
AM		 4195}
4196
411e1bfb 4197static bfd_boolean
4ce794b7 4198update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4199{
411e1bfb 4200 struct plt_entry *ent;
1e2f5b6e 4201
411e1bfb
AM		 4202 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4203 if (ent->addend == addend)
4204 break;
4205 if (ent == NULL)
1e2f5b6e 4206 {
411e1bfb 4207 bfd_size_type amt = sizeof (*ent);
4ce794b7 4208 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4209 if (ent == NULL)
4210 return FALSE;
4211 ent->next = eh->elf.plt.plist;
4212 ent->addend = addend;
4213 ent->plt.refcount = 0;
4214 eh->elf.plt.plist = ent;
1e2f5b6e 4215 }
411e1bfb 4216 ent->plt.refcount += 1;
f5385ebf 4217 eh->elf.needs_plt = 1;
93f3fa99
AM		 4218 if (eh->elf.root.root.string[0] == '.'
4219 && eh->elf.root.root.string[1] != '\0')
4220 eh->is_func = 1;
b34976b6 4221 return TRUE;
1e2f5b6e
AM		 4222}
4223
5bd4f169 4224/* Look through the relocs for a section during the first phase, and
65f38f15 4225 calculate needed space in the global offset table, procedure
5d1634d7 4226 linkage table, and dynamic reloc sections. */
5bd4f169 4227
b34976b6 4228static bfd_boolean
4ce794b7
AM		 4229ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4230 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4231{
65f38f15 4232 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4233 Elf_Internal_Shdr *symtab_hdr;
4234 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4235 const Elf_Internal_Rela *rel;
4236 const Elf_Internal_Rela *rel_end;
5bd4f169 4237 asection *sreloc;
1e2f5b6e 4238 asection **opd_sym_map;
5bd4f169 4239
1049f94e 4240 if (info->relocatable)
b34976b6 4241 return TRUE;
5bd4f169 4242
680a3378
AM		 4243 /* Don't do anything special with non-loaded, non-alloced sections.
4244 In particular, any relocs in such sections should not affect GOT
4245 and PLT reference counting (ie. we don't allow them to create GOT
4246 or PLT entries), there's no possibility or desire to optimize TLS
4247 relocs, and there's not much point in propagating relocs to shared
4248 libs that the dynamic linker won't relocate. */
4249 if ((sec->flags & SEC_ALLOC) == 0)
4250 return TRUE;
4251
65f38f15 4252 htab = ppc_hash_table (info);
5bd4f169 4253 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4254
4255 sym_hashes = elf_sym_hashes (abfd);
4256 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4257 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4258 - symtab_hdr->sh_info);
5bd4f169
AM		 4259
4260 sreloc = NULL;
1e2f5b6e
AM		 4261 opd_sym_map = NULL;
4262 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4263 {
4264 /* Garbage collection needs some extra help with .opd sections.
4265 We don't want to necessarily keep everything referenced by
4266 relocs in .opd, as that would keep all functions. Instead,
4267 if we reference an .opd symbol (a function descriptor), we
4268 want to keep the function code symbol's section. This is
4269 easy for global symbols, but for local syms we need to keep
4270 information about the associated function section. Later, if
4271 edit_opd deletes entries, we'll use this array to adjust
4272 local syms in .opd. */
4273 union opd_info {
4274 asection *func_section;
4275 long entry_adjust;
4276 };
4277 bfd_size_type amt;
4278
3f764659 4279 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4280 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4281 if (opd_sym_map == NULL)
b34976b6 4282 return FALSE;
f0abc2a1 4283 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4284 }
5bd4f169 4285
82bd7b59
AM		 4286 if (htab->sfpr == NULL
4287 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4288 return FALSE;
82bd7b59 4289
5bd4f169
AM		 4290 rel_end = relocs + sec->reloc_count;
4291 for (rel = relocs; rel < rel_end; rel++)
4292 {
4293 unsigned long r_symndx;
4294 struct elf_link_hash_entry *h;
04c9666a 4295 enum elf_ppc64_reloc_type r_type;
411e1bfb 4296 int tls_type = 0;
5bd4f169
AM		 4297
4298 r_symndx = ELF64_R_SYM (rel->r_info);
4299 if (r_symndx < symtab_hdr->sh_info)
4300 h = NULL;
4301 else
4302 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4303
4ce794b7 4304 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4305 switch (r_type)
5bd4f169 4306 {
411e1bfb
AM		 4307 case R_PPC64_GOT_TLSLD16:
4308 case R_PPC64_GOT_TLSLD16_LO:
4309 case R_PPC64_GOT_TLSLD16_HI:
4310 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4311 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4312 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4313 goto dogottls;
4314
4315 case R_PPC64_GOT_TLSGD16:
4316 case R_PPC64_GOT_TLSGD16_LO:
4317 case R_PPC64_GOT_TLSGD16_HI:
4318 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4319 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4320 goto dogottls;
4321
4322 case R_PPC64_GOT_TPREL16_DS:
4323 case R_PPC64_GOT_TPREL16_LO_DS:
4324 case R_PPC64_GOT_TPREL16_HI:
4325 case R_PPC64_GOT_TPREL16_HA:
4326 if (info->shared)
4327 info->flags |= DF_STATIC_TLS;
4328 tls_type = TLS_TLS | TLS_TPREL;
4329 goto dogottls;
4330
4331 case R_PPC64_GOT_DTPREL16_DS:
4332 case R_PPC64_GOT_DTPREL16_LO_DS:
4333 case R_PPC64_GOT_DTPREL16_HI:
4334 case R_PPC64_GOT_DTPREL16_HA:
4335 tls_type = TLS_TLS | TLS_DTPREL;
4336 dogottls:
4337 sec->has_tls_reloc = 1;
4338 /* Fall thru */
4339
5bd4f169 4340 case R_PPC64_GOT16:
5bd4f169 4341 case R_PPC64_GOT16_DS:
65f38f15
AM		 4342 case R_PPC64_GOT16_HA:
4343 case R_PPC64_GOT16_HI:
4344 case R_PPC64_GOT16_LO:
5bd4f169 4345 case R_PPC64_GOT16_LO_DS:
65f38f15 4346 /* This symbol requires a global offset table entry. */
4c52953f 4347 sec->has_toc_reloc = 1;
e717da7e
AM		 4348 if (ppc64_elf_tdata (abfd)->got == NULL
4349 && !create_got_section (abfd, info))
b34976b6 4350 return FALSE;
5bd4f169
AM		 4351
4352 if (h != NULL)
4353 {
411e1bfb
AM		 4354 struct ppc_link_hash_entry *eh;
4355 struct got_entry *ent;
65f38f15 4356
411e1bfb
AM		 4357 eh = (struct ppc_link_hash_entry *) h;
4358 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4359 if (ent->addend == rel->r_addend
e717da7e 4360 && ent->owner == abfd
411e1bfb
AM		 4361 && ent->tls_type == tls_type)
4362 break;
4363 if (ent == NULL)
5bd4f169 4364 {
411e1bfb 4365 bfd_size_type amt = sizeof (*ent);
4ce794b7 4366 ent = bfd_alloc (abfd, amt);
411e1bfb 4367 if (ent == NULL)
b34976b6 4368 return FALSE;
411e1bfb
AM		 4369 ent->next = eh->elf.got.glist;
4370 ent->addend = rel->r_addend;
e717da7e 4371 ent->owner = abfd;
411e1bfb
AM		 4372 ent->tls_type = tls_type;
4373 ent->got.refcount = 0;
4374 eh->elf.got.glist = ent;
5bd4f169 4375 }
411e1bfb 4376 ent->got.refcount += 1;
e7b938ca 4377 eh->tls_mask |= tls_type;
5bd4f169 4378 }
411e1bfb
AM		 4379 else
4380 /* This is a global offset table entry for a local symbol. */
4381 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4382 rel->r_addend, tls_type))
4383 return FALSE;
5bd4f169
AM		 4384 break;
4385
5bd4f169 4386 case R_PPC64_PLT16_HA:
65f38f15
AM		 4387 case R_PPC64_PLT16_HI:
4388 case R_PPC64_PLT16_LO:
4389 case R_PPC64_PLT32:
4390 case R_PPC64_PLT64:
5bd4f169 4391 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4392 actually build the entry in adjust_dynamic_symbol,
4393 because this might be a case of linking PIC code without
4394 linking in any dynamic objects, in which case we don't
4395 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4396 if (h == NULL)
4397 {
4398 /* It does not make sense to have a procedure linkage
3fad3c7c 4399 table entry for a local symbol. */
5bd4f169 4400 bfd_set_error (bfd_error_bad_value);
b34976b6 4401 return FALSE;
5bd4f169 4402 }
411e1bfb
AM		 4403 else
4404 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4405 rel->r_addend))
4406 return FALSE;
5bd4f169
AM		 4407 break;
4408
4409 /* The following relocations don't need to propagate the
4410 relocation if linking a shared object since they are
4411 section relative. */
4412 case R_PPC64_SECTOFF:
4413 case R_PPC64_SECTOFF_LO:
4414 case R_PPC64_SECTOFF_HI:
4415 case R_PPC64_SECTOFF_HA:
4416 case R_PPC64_SECTOFF_DS:
4417 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4418 case R_PPC64_DTPREL16:
4419 case R_PPC64_DTPREL16_LO:
4420 case R_PPC64_DTPREL16_HI:
4421 case R_PPC64_DTPREL16_HA:
4422 case R_PPC64_DTPREL16_DS:
4423 case R_PPC64_DTPREL16_LO_DS:
4424 case R_PPC64_DTPREL16_HIGHER:
4425 case R_PPC64_DTPREL16_HIGHERA:
4426 case R_PPC64_DTPREL16_HIGHEST:
4427 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4428 break;
4429
ad8e1ba5
AM		 4430 /* Nor do these. */
4431 case R_PPC64_TOC16:
4432 case R_PPC64_TOC16_LO:
4433 case R_PPC64_TOC16_HI:
4434 case R_PPC64_TOC16_HA:
4435 case R_PPC64_TOC16_DS:
4436 case R_PPC64_TOC16_LO_DS:
4c52953f 4437 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4438 break;
4439
5bd4f169
AM		 4440 /* This relocation describes the C++ object vtable hierarchy.
4441 Reconstruct it for later use during GC. */
4442 case R_PPC64_GNU_VTINHERIT:
c152c796 4443 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4444 return FALSE;
5bd4f169
AM		 4445 break;
4446
4447 /* This relocation describes which C++ vtable entries are actually
4448 used. Record for later use during GC. */
4449 case R_PPC64_GNU_VTENTRY:
c152c796 4450 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4451 return FALSE;
5bd4f169
AM		 4452 break;
4453
721956f4
AM		 4454 case R_PPC64_REL14:
4455 case R_PPC64_REL14_BRTAKEN:
4456 case R_PPC64_REL14_BRNTAKEN:
4457 htab->has_14bit_branch = 1;
4458 /* Fall through. */
4459
5d1634d7 4460 case R_PPC64_REL24:
8387904d 4461 if (h != NULL)
5d1634d7
AM		 4462 {
4463 /* We may need a .plt entry if the function this reloc
4464 refers to is in a shared lib. */
411e1bfb
AM		 4465 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4466 rel->r_addend))
4467 return FALSE;
8387904d
AM		 4468 if (h == &htab->tls_get_addr->elf
4469 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4470 sec->has_tls_reloc = 1;
8387904d
AM		 4471 else if (htab->tls_get_addr == NULL
4472 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4473 && (h->root.root.string[15] == 0
4474 || h->root.root.string[15] == '@'))
411e1bfb 4475 {
8387904d
AM		 4476 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4477 sec->has_tls_reloc = 1;
4478 }
4479 else if (htab->tls_get_addr_fd == NULL
4480 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4481 && (h->root.root.string[14] == 0
4482 || h->root.root.string[14] == '@'))
4483 {
4484 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4485 sec->has_tls_reloc = 1;
4486 }
4487 }
4488 break;
4489
4490 case R_PPC64_TPREL64:
4491 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4492 if (info->shared)
4493 info->flags |= DF_STATIC_TLS;
4494 goto dotlstoc;
4495
4496 case R_PPC64_DTPMOD64:
4497 if (rel + 1 < rel_end
4498 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4499 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4500 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4501 else
951fd09b 4502 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4503 goto dotlstoc;
4504
4505 case R_PPC64_DTPREL64:
4506 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4507 if (rel != relocs
4508 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4509 && rel[-1].r_offset == rel->r_offset - 8)
4510 /* This is the second reloc of a dtpmod, dtprel pair.
4511 Don't mark with TLS_DTPREL. */
4512 goto dodyn;
4513
4514 dotlstoc:
4515 sec->has_tls_reloc = 1;
4516 if (h != NULL)
4517 {
4518 struct ppc_link_hash_entry *eh;
4519 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4520 eh->tls_mask |= tls_type;
411e1bfb
AM		 4521 }
4522 else
4523 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4524 rel->r_addend, tls_type))
4525 return FALSE;
4526
4527 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4528 {
e7b938ca 4529 /* One extra to simplify get_tls_mask. */
eea6121a 4530 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4531 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4532 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4533 return FALSE;
4534 }
4535 BFD_ASSERT (rel->r_offset % 8 == 0);
4536 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4537
4538 /* Mark the second slot of a GD or LD entry.
4539 -1 to indicate GD and -2 to indicate LD. */
4540 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4541 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4542 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4543 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4544 goto dodyn;
4545
4546 case R_PPC64_TPREL16:
4547 case R_PPC64_TPREL16_LO:
4548 case R_PPC64_TPREL16_HI:
4549 case R_PPC64_TPREL16_HA:
4550 case R_PPC64_TPREL16_DS:
4551 case R_PPC64_TPREL16_LO_DS:
4552 case R_PPC64_TPREL16_HIGHER:
4553 case R_PPC64_TPREL16_HIGHERA:
4554 case R_PPC64_TPREL16_HIGHEST:
4555 case R_PPC64_TPREL16_HIGHESTA:
4556 if (info->shared)
4557 {
4558 info->flags |= DF_STATIC_TLS;
4559 goto dodyn;
5d1634d7
AM		 4560 }
4561 break;
4562
e86ce104 4563 case R_PPC64_ADDR64:
1e2f5b6e 4564 if (opd_sym_map != NULL
1e2f5b6e 4565 && rel + 1 < rel_end
4ce794b7 4566 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4567 {
8387904d
AM		 4568 if (h != NULL)
4569 {
4570 if (h->root.root.string[0] == '.'
4571 && h->root.root.string[1] != 0
4572 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4573 ;
4574 else
4575 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4576 }
4577 else
4578 {
4579 asection *s;
1e2f5b6e 4580
8387904d
AM		 4581 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4582 r_symndx);
4583 if (s == NULL)
4584 return FALSE;
4585 else if (s != sec)
3f764659 4586 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4587 }
1e2f5b6e 4588 }
e86ce104
AM		 4589 /* Fall through. */
4590
04c9666a 4591 case R_PPC64_REL30:
5bd4f169 4592 case R_PPC64_REL32:
04c9666a 4593 case R_PPC64_REL64:
65f38f15
AM		 4594 case R_PPC64_ADDR14:
4595 case R_PPC64_ADDR14_BRNTAKEN:
4596 case R_PPC64_ADDR14_BRTAKEN:
4597 case R_PPC64_ADDR16:
4598 case R_PPC64_ADDR16_DS:
4599 case R_PPC64_ADDR16_HA:
4600 case R_PPC64_ADDR16_HI:
4601 case R_PPC64_ADDR16_HIGHER:
4602 case R_PPC64_ADDR16_HIGHERA:
4603 case R_PPC64_ADDR16_HIGHEST:
4604 case R_PPC64_ADDR16_HIGHESTA:
4605 case R_PPC64_ADDR16_LO:
4606 case R_PPC64_ADDR16_LO_DS:
4607 case R_PPC64_ADDR24:
65f38f15 4608 case R_PPC64_ADDR32:
65f38f15
AM		 4609 case R_PPC64_UADDR16:
4610 case R_PPC64_UADDR32:
4611 case R_PPC64_UADDR64:
5bd4f169 4612 case R_PPC64_TOC:
81848ca0
AM		 4613 if (h != NULL && !info->shared)
4614 /* We may need a copy reloc. */
f5385ebf 4615 h->non_got_ref = 1;
81848ca0 4616
41bd81ab 4617 /* Don't propagate .opd relocs. */
1e2f5b6e 4618 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4619 break;
e86ce104 4620
65f38f15
AM		 4621 /* If we are creating a shared library, and this is a reloc
4622 against a global symbol, or a non PC relative reloc
4623 against a local symbol, then we need to copy the reloc
4624 into the shared library. However, if we are linking with
4625 -Bsymbolic, we do not need to copy a reloc against a
4626 global symbol which is defined in an object we are
4627 including in the link (i.e., DEF_REGULAR is set). At
4628 this point we have not seen all the input files, so it is
4629 possible that DEF_REGULAR is not set now but will be set
4630 later (it is never cleared). In case of a weak definition,
4631 DEF_REGULAR may be cleared later by a strong definition in
4632 a shared library. We account for that possibility below by
f4656909 4633 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4634 table entry. A similar situation occurs when creating
4635 shared libraries and symbol visibility changes render the
4636 symbol local.
4637
4638 If on the other hand, we are creating an executable, we
4639 may need to keep relocations for symbols satisfied by a
4640 dynamic library if we manage to avoid copy relocs for the
4641 symbol. */
411e1bfb 4642 dodyn:
65f38f15 4643 if ((info->shared
411e1bfb 4644 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4645 || (h != NULL
4646 && (! info->symbolic
4647 || h->root.type == bfd_link_hash_defweak
f5385ebf 4648 || !h->def_regular))))
f4656909
AM		 4649 || (ELIMINATE_COPY_RELOCS
4650 && !info->shared
65f38f15
AM		 4651 && h != NULL
4652 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4653 || !h->def_regular)))
5bd4f169 4654 {
ec338859
AM		 4655 struct ppc_dyn_relocs *p;
4656 struct ppc_dyn_relocs **head;
4657
65f38f15
AM		 4658 /* We must copy these reloc types into the output file.
4659 Create a reloc section in dynobj and make room for
4660 this reloc. */
5bd4f169
AM		 4661 if (sreloc == NULL)
4662 {
4663 const char *name;
65f38f15 4664 bfd *dynobj;
5bd4f169
AM		 4665
4666 name = (bfd_elf_string_from_elf_section
4667 (abfd,
4668 elf_elfheader (abfd)->e_shstrndx,
4669 elf_section_data (sec)->rel_hdr.sh_name));
4670 if (name == NULL)
b34976b6 4671 return FALSE;
5bd4f169 4672
65f38f15
AM		 4673 if (strncmp (name, ".rela", 5) != 0
4674 || strcmp (bfd_get_section_name (abfd, sec),
4675 name + 5) != 0)
4676 {
4677 (*_bfd_error_handler)
d003868e
AM		 4678 (_("%B: bad relocation section name `%s\'"),
4679 abfd, name);
5d1634d7 4680 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4681 }
4682
65f38f15 4683 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4684 sreloc = bfd_get_section_by_name (dynobj, name);
4685 if (sreloc == NULL)
4686 {
4687 flagword flags;
4688
4689 sreloc = bfd_make_section (dynobj, name);
4690 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 4691 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4692 | SEC_ALLOC | SEC_LOAD);
5bd4f169
AM		 4693 if (sreloc == NULL
4694 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 4695 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4696 return FALSE;
5bd4f169 4697 }
65f38f15 4698 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4699 }
4700
65f38f15
AM		 4701 /* If this is a global symbol, we count the number of
4702 relocations we need for this symbol. */
4703 if (h != NULL)
4704 {
ec338859 4705 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4706 }
4707 else
4708 {
ec338859
AM		 4709 /* Track dynamic relocs needed for local syms too.
4710 We really need local syms available to do this
4711 easily. Oh well. */
4712
4713 asection *s;
4714 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4715 sec, r_symndx);
4716 if (s == NULL)
b34976b6 4717 return FALSE;
ec338859
AM		 4718
4719 head = ((struct ppc_dyn_relocs **)
4720 &elf_section_data (s)->local_dynrel);
65f38f15 4721 }
ec338859
AM		 4722
4723 p = *head;
4724 if (p == NULL || p->sec != sec)
4725 {
4ce794b7 4726 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4727 if (p == NULL)
b34976b6 4728 return FALSE;
ec338859
AM		 4729 p->next = *head;
4730 *head = p;
4731 p->sec = sec;
4732 p->count = 0;
4733 p->pc_count = 0;
4734 }
4735
4736 p->count += 1;
411e1bfb 4737 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4738 p->pc_count += 1;
65f38f15 4739 }
5bd4f169 4740 break;
65f38f15
AM		 4741
4742 default:
96e0dda4 4743 break;
5bd4f169
AM		 4744 }
4745 }
4746
b34976b6 4747 return TRUE;
5bd4f169
AM		 4748}
4749
8387904d
AM		 4750/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4751 of the code entry point, and its section. */
4752
4753static bfd_vma
4754opd_entry_value (asection *opd_sec,
4755 bfd_vma offset,
4756 asection **code_sec,
4757 bfd_vma *code_off)
4758{
4759 bfd *opd_bfd = opd_sec->owner;
8860955f 4760 Elf_Internal_Rela *relocs;
8387904d 4761 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4762 bfd_vma val;
8387904d 4763
4b85d634
AM		 4764 /* No relocs implies we are linking a --just-symbols object. */
4765 if (opd_sec->reloc_count == 0)
4766 {
4767 bfd_vma val;
4768
4769 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4770 return (bfd_vma) -1;
4771
4772 if (code_sec != NULL)
4773 {
4774 asection *sec, *likely = NULL;
4775 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4776 if (sec->vma <= val
4777 && (sec->flags & SEC_LOAD) != 0
4778 && (sec->flags & SEC_ALLOC) != 0)
4779 likely = sec;
4780 if (likely != NULL)
4781 {
4782 *code_sec = likely;
4783 if (code_off != NULL)
4784 *code_off = val - likely->vma;
4785 }
4786 }
4787 return val;
4788 }
4789
8860955f
AM		 4790 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4791 if (relocs == NULL)
4792 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4793
8387904d 4794 /* Go find the opd reloc at the sym address. */
8860955f 4795 lo = relocs;
8387904d
AM		 4796 BFD_ASSERT (lo != NULL);
4797 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4798 val = (bfd_vma) -1;
8387904d
AM		 4799 while (lo < hi)
4800 {
4801 look = lo + (hi - lo) / 2;
4802 if (look->r_offset < offset)
4803 lo = look + 1;
4804 else if (look->r_offset > offset)
4805 hi = look;
4806 else
4807 {
4808 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4809 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4810 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4811 {
4812 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4813 asection *sec;
4814
4815 if (symndx < symtab_hdr->sh_info)
4816 {
4817 Elf_Internal_Sym *sym;
4818
4819 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4820 if (sym == NULL)
4821 {
4822 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4823 symtab_hdr->sh_info,
4824 0, NULL, NULL, NULL);
4825 if (sym == NULL)
645ea6a9 4826 break;
8387904d
AM		 4827 symtab_hdr->contents = (bfd_byte *) sym;
4828 }
4829
4830 sym += symndx;
4831 val = sym->st_value;
4832 sec = NULL;
4833 if ((sym->st_shndx != SHN_UNDEF
4834 && sym->st_shndx < SHN_LORESERVE)
4835 || sym->st_shndx > SHN_HIRESERVE)
4836 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4837 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4838 }
4839 else
4840 {
4841 struct elf_link_hash_entry **sym_hashes;
4842 struct elf_link_hash_entry *rh;
4843
4844 sym_hashes = elf_sym_hashes (opd_bfd);
4845 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4846 while (rh->root.type == bfd_link_hash_indirect
4847 || rh->root.type == bfd_link_hash_warning)
4848 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4849 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4850 || rh->root.type == bfd_link_hash_defweak);
4851 val = rh->root.u.def.value;
4852 sec = rh->root.u.def.section;
4853 }
4854 val += look->r_addend;
4855 if (code_off != NULL)
4856 *code_off = val;
4857 if (code_sec != NULL)
4858 *code_sec = sec;
4859 if (sec != NULL && sec->output_section != NULL)
4860 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4861 }
4862 break;
4863 }
4864 }
645ea6a9 4865
645ea6a9 4866 return val;
8387904d
AM		 4867}
4868
5bd4f169
AM		 4869/* Return the section that should be marked against GC for a given
4870 relocation. */
4871
4872static asection *
4ce794b7 4873ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4874 struct bfd_link_info *info,
4ce794b7
AM		 4875 Elf_Internal_Rela *rel,
4876 struct elf_link_hash_entry *h,
4877 Elf_Internal_Sym *sym)
5bd4f169 4878{
ccfa59ea
AM		 4879 asection *rsec;
4880
4881 /* First mark all our entry sym sections. */
4882 if (info->gc_sym_list != NULL)
4883 {
4884 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4885 struct bfd_sym_chain *sym = info->gc_sym_list;
4886
4887 info->gc_sym_list = NULL;
4888 do
4889 {
4890 struct ppc_link_hash_entry *eh;
4891
4892 eh = (struct ppc_link_hash_entry *)
4893 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4894 if (eh == NULL)
4895 continue;
4896 if (eh->elf.root.type != bfd_link_hash_defined
4897 && eh->elf.root.type != bfd_link_hash_defweak)
4898 continue;
4899
c4f68ce3
AM		 4900 if (eh->is_func_descriptor
4901 && (eh->oh->elf.root.type == bfd_link_hash_defined
4902 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4903 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4904 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4905 && opd_entry_value (eh->elf.root.u.def.section,
4906 eh->elf.root.u.def.value,
4907 &rsec, NULL) != (bfd_vma) -1)
4908 ;
ccfa59ea
AM		 4909 else
4910 continue;
4911
4912 if (!rsec->gc_mark)
4913 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4914
4915 rsec = eh->elf.root.u.def.section;
4916 if (!rsec->gc_mark)
4917 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4918
4919 sym = sym->next;
4920 }
4921 while (sym != NULL);
4922 }
4923
4924 /* Syms return NULL if we're marking .opd, so we avoid marking all
4925 function sections, as all functions are referenced in .opd. */
4926 rsec = NULL;
4927 if (get_opd_info (sec) != NULL)
4928 return rsec;
1e2f5b6e 4929
5bd4f169
AM		 4930 if (h != NULL)
4931 {
04c9666a 4932 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4933 struct ppc_link_hash_entry *eh;
a33d1f77 4934
4ce794b7 4935 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4936 switch (r_type)
5bd4f169
AM		 4937 {
4938 case R_PPC64_GNU_VTINHERIT:
4939 case R_PPC64_GNU_VTENTRY:
4940 break;
4941
4942 default:
4943 switch (h->root.type)
4944 {
4945 case bfd_link_hash_defined:
4946 case bfd_link_hash_defweak:
ccfa59ea 4947 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 4948 if (eh->oh != NULL
4949 && eh->oh->is_func_descriptor
4950 && (eh->oh->elf.root.type == bfd_link_hash_defined
4951 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4952 eh = eh->oh;
1e2f5b6e
AM		 4953
4954 /* Function descriptor syms cause the associated
4955 function code sym section to be marked. */
c4f68ce3
AM		 4956 if (eh->is_func_descriptor
4957 && (eh->oh->elf.root.type == bfd_link_hash_defined
4958 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 4959 {
4960 /* They also mark their opd section. */
4961 if (!eh->elf.root.u.def.section->gc_mark)
4962 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4963 ppc64_elf_gc_mark_hook);
4964
4965 rsec = eh->oh->elf.root.u.def.section;
4966 }
8387904d
AM		 4967 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4968 && opd_entry_value (eh->elf.root.u.def.section,
4969 eh->elf.root.u.def.value,
4970 &rsec, NULL) != (bfd_vma) -1)
4971 {
4972 if (!eh->elf.root.u.def.section->gc_mark)
4973 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4974 ppc64_elf_gc_mark_hook);
4975 }
ccfa59ea 4976 else
1e2f5b6e
AM		 4977 rsec = h->root.u.def.section;
4978 break;
5bd4f169
AM		 4979
4980 case bfd_link_hash_common:
1e2f5b6e
AM		 4981 rsec = h->root.u.c.p->section;
4982 break;
5bd4f169
AM		 4983
4984 default:
4985 break;
4986 }
4987 }
4988 }
4989 else
4990 {
1e2f5b6e
AM		 4991 asection **opd_sym_section;
4992
4993 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 4994 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 4995 if (opd_sym_section != NULL)
ccfa59ea
AM		 4996 {
4997 if (!rsec->gc_mark)
4998 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4999
3f764659 5000 rsec = opd_sym_section[sym->st_value / 8];
ccfa59ea 5001 }
5bd4f169
AM		 5002 }
5003
1e2f5b6e 5004 return rsec;
5bd4f169
AM		 5005}
5006
65f38f15
AM		 5007/* Update the .got, .plt. and dynamic reloc reference counts for the
5008 section being removed. */
5bd4f169 5009
b34976b6 5010static bfd_boolean
4ce794b7
AM		 5011ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5012 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5013{
411e1bfb 5014 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5015 Elf_Internal_Shdr *symtab_hdr;
5016 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5017 struct got_entry **local_got_ents;
5bd4f169 5018 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5019
680a3378
AM		 5020 if ((sec->flags & SEC_ALLOC) == 0)
5021 return TRUE;
5022
ec338859
AM		 5023 elf_section_data (sec)->local_dynrel = NULL;
5024
411e1bfb 5025 htab = ppc_hash_table (info);
5bd4f169
AM		 5026 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5027 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5028 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5029
5030 relend = relocs + sec->reloc_count;
5031 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5032 {
5033 unsigned long r_symndx;
04c9666a 5034 enum elf_ppc64_reloc_type r_type;
58ac9f71 5035 struct elf_link_hash_entry *h = NULL;
411e1bfb 5036 char tls_type = 0;
5bd4f169 5037
a33d1f77 5038 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5039 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5040 if (r_symndx >= symtab_hdr->sh_info)
5041 {
5042 struct ppc_link_hash_entry *eh;
5043 struct ppc_dyn_relocs **pp;
5044 struct ppc_dyn_relocs *p;
5045
5046 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5047 while (h->root.type == bfd_link_hash_indirect
5048 || h->root.type == bfd_link_hash_warning)
5049 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5050 eh = (struct ppc_link_hash_entry *) h;
5051
5052 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5053 if (p->sec == sec)
5054 {
5055 /* Everything must go for SEC. */
5056 *pp = p->next;
5057 break;
5058 }
5059 }
5060
a33d1f77
AM		 5061 switch (r_type)
5062 {
411e1bfb
AM		 5063 case R_PPC64_GOT_TLSLD16:
5064 case R_PPC64_GOT_TLSLD16_LO:
5065 case R_PPC64_GOT_TLSLD16_HI:
5066 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5067 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5068 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5069 goto dogot;
5070
5071 case R_PPC64_GOT_TLSGD16:
5072 case R_PPC64_GOT_TLSGD16_LO:
5073 case R_PPC64_GOT_TLSGD16_HI:
5074 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5075 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5076 goto dogot;
5077
5078 case R_PPC64_GOT_TPREL16_DS:
5079 case R_PPC64_GOT_TPREL16_LO_DS:
5080 case R_PPC64_GOT_TPREL16_HI:
5081 case R_PPC64_GOT_TPREL16_HA:
5082 tls_type = TLS_TLS | TLS_TPREL;
5083 goto dogot;
5084
5085 case R_PPC64_GOT_DTPREL16_DS:
5086 case R_PPC64_GOT_DTPREL16_LO_DS:
5087 case R_PPC64_GOT_DTPREL16_HI:
5088 case R_PPC64_GOT_DTPREL16_HA:
5089 tls_type = TLS_TLS | TLS_DTPREL;
5090 goto dogot;
5091
a33d1f77
AM		 5092 case R_PPC64_GOT16:
5093 case R_PPC64_GOT16_DS:
5094 case R_PPC64_GOT16_HA:
5095 case R_PPC64_GOT16_HI:
5096 case R_PPC64_GOT16_LO:
5097 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5098 dogot:
5099 {
5100 struct got_entry *ent;
5101
58ac9f71
AM		 5102 if (h != NULL)
5103 ent = h->got.glist;
411e1bfb
AM		 5104 else
5105 ent = local_got_ents[r_symndx];
5106
5107 for (; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
e717da7e 5109 && ent->owner == abfd
411e1bfb
AM		 5110 && ent->tls_type == tls_type)
5111 break;
5112 if (ent == NULL)
5113 abort ();
5114 if (ent->got.refcount > 0)
5115 ent->got.refcount -= 1;
5116 }
a33d1f77 5117 break;
65f38f15 5118
a33d1f77
AM		 5119 case R_PPC64_PLT16_HA:
5120 case R_PPC64_PLT16_HI:
5121 case R_PPC64_PLT16_LO:
5122 case R_PPC64_PLT32:
5123 case R_PPC64_PLT64:
721956f4
AM		 5124 case R_PPC64_REL14:
5125 case R_PPC64_REL14_BRNTAKEN:
5126 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5127 case R_PPC64_REL24:
58ac9f71 5128 if (h != NULL)
5d1634d7 5129 {
411e1bfb
AM		 5130 struct plt_entry *ent;
5131
411e1bfb
AM		 5132 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5133 if (ent->addend == rel->r_addend)
5134 break;
5135 if (ent == NULL)
5136 abort ();
5137 if (ent->plt.refcount > 0)
5138 ent->plt.refcount -= 1;
5d1634d7 5139 }
e86ce104 5140 break;
5d1634d7 5141
a33d1f77
AM		 5142 default:
5143 break;
5144 }
5145 }
b34976b6 5146 return TRUE;
5bd4f169
AM		 5147}
5148
deb0e272
AM		 5149/* The maximum size of .sfpr. */
5150#define SFPR_MAX (218*4)
5151
5152struct sfpr_def_parms
5153{
699733f6
AM		 5154 const char name[12];
5155 unsigned char lo, hi;
deb0e272
AM		 5156 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5157 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5158};
5159
5160/* Auto-generate _save*, _rest* functions in .sfpr. */
5161
5162static unsigned int
5163sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5164{
5165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5166 unsigned int i;
5167 size_t len = strlen (parm->name);
5168 bfd_boolean writing = FALSE;
699733f6 5169 char sym[16];
deb0e272
AM		 5170
5171 memcpy (sym, parm->name, len);
5172 sym[len + 2] = 0;
5173
5174 for (i = parm->lo; i <= parm->hi; i++)
5175 {
5176 struct elf_link_hash_entry *h;
5177
5178 sym[len + 0] = i / 10 + '0';
5179 sym[len + 1] = i % 10 + '0';
5180 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5181 if (h != NULL
f5385ebf 5182 && !h->def_regular)
deb0e272
AM		 5183 {
5184 h->root.type = bfd_link_hash_defined;
5185 h->root.u.def.section = htab->sfpr;
5186 h->root.u.def.value = htab->sfpr->size;
5187 h->type = STT_FUNC;
f5385ebf 5188 h->def_regular = 1;
deb0e272
AM		 5189 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5190 writing = TRUE;
5191 if (htab->sfpr->contents == NULL)
5192 {
5193 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5194 if (htab->sfpr->contents == NULL)
5195 return FALSE;
5196 }
5197 }
5198 if (writing)
5199 {
5200 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5201 if (i != parm->hi)
5202 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5203 else
5204 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5205 htab->sfpr->size = p - htab->sfpr->contents;
5206 }
5207 }
5208
5209 return TRUE;
5210}
5211
5212static bfd_byte *
5213savegpr0 (bfd *abfd, bfd_byte *p, int r)
5214{
5215 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5216 return p + 4;
5217}
5218
5219static bfd_byte *
5220savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5221{
5222 p = savegpr0 (abfd, p, r);
5223 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5224 p = p + 4;
5225 bfd_put_32 (abfd, BLR, p);
5226 return p + 4;
5227}
5228
5229static bfd_byte *
5230restgpr0 (bfd *abfd, bfd_byte *p, int r)
5231{
5232 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5233 return p + 4;
5234}
5235
5236static bfd_byte *
5237restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5238{
5239 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5240 p = p + 4;
5241 p = restgpr0 (abfd, p, r);
5242 bfd_put_32 (abfd, MTLR_R0, p);
5243 p = p + 4;
5244 if (r == 29)
5245 {
5246 p = restgpr0 (abfd, p, 30);
5247 p = restgpr0 (abfd, p, 31);
5248 }
5249 bfd_put_32 (abfd, BLR, p);
5250 return p + 4;
5251}
5252
5253static bfd_byte *
5254savegpr1 (bfd *abfd, bfd_byte *p, int r)
5255{
5256 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5257 return p + 4;
5258}
5259
5260static bfd_byte *
5261savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5262{
5263 p = savegpr1 (abfd, p, r);
5264 bfd_put_32 (abfd, BLR, p);
5265 return p + 4;
5266}
5267
5268static bfd_byte *
5269restgpr1 (bfd *abfd, bfd_byte *p, int r)
5270{
5271 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5272 return p + 4;
5273}
5274
5275static bfd_byte *
5276restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5277{
5278 p = restgpr1 (abfd, p, r);
5279 bfd_put_32 (abfd, BLR, p);
5280 return p + 4;
5281}
5282
5283static bfd_byte *
5284savefpr (bfd *abfd, bfd_byte *p, int r)
5285{
5286 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5287 return p + 4;
5288}
5289
5290static bfd_byte *
5291savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5292{
5293 p = savefpr (abfd, p, r);
5294 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5295 p = p + 4;
5296 bfd_put_32 (abfd, BLR, p);
5297 return p + 4;
5298}
5299
5300static bfd_byte *
5301restfpr (bfd *abfd, bfd_byte *p, int r)
5302{
5303 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5304 return p + 4;
5305}
5306
5307static bfd_byte *
5308restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5309{
5310 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5311 p = p + 4;
5312 p = restfpr (abfd, p, r);
5313 bfd_put_32 (abfd, MTLR_R0, p);
5314 p = p + 4;
5315 if (r == 29)
5316 {
5317 p = restfpr (abfd, p, 30);
5318 p = restfpr (abfd, p, 31);
5319 }
5320 bfd_put_32 (abfd, BLR, p);
5321 return p + 4;
5322}
5323
5324static bfd_byte *
5325savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5326{
5327 p = savefpr (abfd, p, r);
5328 bfd_put_32 (abfd, BLR, p);
5329 return p + 4;
5330}
5331
5332static bfd_byte *
5333restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5334{
5335 p = restfpr (abfd, p, r);
5336 bfd_put_32 (abfd, BLR, p);
5337 return p + 4;
5338}
5339
5340static bfd_byte *
5341savevr (bfd *abfd, bfd_byte *p, int r)
5342{
5343 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5344 p = p + 4;
5345 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5346 return p + 4;
5347}
5348
5349static bfd_byte *
5350savevr_tail (bfd *abfd, bfd_byte *p, int r)
5351{
5352 p = savevr (abfd, p, r);
5353 bfd_put_32 (abfd, BLR, p);
5354 return p + 4;
5355}
5356
5357static bfd_byte *
5358restvr (bfd *abfd, bfd_byte *p, int r)
5359{
5360 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5361 p = p + 4;
5362 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5363 return p + 4;
5364}
5365
5366static bfd_byte *
5367restvr_tail (bfd *abfd, bfd_byte *p, int r)
5368{
5369 p = restvr (abfd, p, r);
5370 bfd_put_32 (abfd, BLR, p);
5371 return p + 4;
5372}
5373
e86ce104
AM		 5374/* Called via elf_link_hash_traverse to transfer dynamic linking
5375 information on function code symbol entries to their corresponding
5376 function descriptor symbol entries. */
deb0e272 5377
b34976b6 5378static bfd_boolean
4ce794b7 5379func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5380{
e86ce104 5381 struct bfd_link_info *info;
65f38f15 5382 struct ppc_link_hash_table *htab;
411e1bfb 5383 struct plt_entry *ent;
50bc7936
AM		 5384 struct ppc_link_hash_entry *fh;
5385 struct ppc_link_hash_entry *fdh;
5386 bfd_boolean force_local;
5bd4f169 5387
50bc7936
AM		 5388 fh = (struct ppc_link_hash_entry *) h;
5389 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5390 return TRUE;
e86ce104 5391
50bc7936
AM		 5392 if (fh->elf.root.type == bfd_link_hash_warning)
5393 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5394
4ce794b7 5395 info = inf;
65f38f15 5396 htab = ppc_hash_table (info);
5bd4f169 5397
c09bdfe5
AM		 5398 /* Resolve undefined references to dot-symbols as the value
5399 in the function descriptor, if we have one in a regular object.
5400 This is to satisfy cases like ".quad .foo". Calls to functions
5401 in dynamic objects are handled elsewhere. */
5402 if (fh->elf.root.type == bfd_link_hash_undefweak
5403 && fh->was_undefined
5404 && (fh->oh->elf.root.type == bfd_link_hash_defined
5405 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5406 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5407 && opd_entry_value (fh->oh->elf.root.u.def.section,
5408 fh->oh->elf.root.u.def.value,
5409 &fh->elf.root.u.def.section,
5410 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5411 {
5412 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5413 fh->elf.forced_local = 1;
c09bdfe5
AM		 5414 }
5415
e86ce104
AM		 5416 /* If this is a function code symbol, transfer dynamic linking
5417 information to the function descriptor symbol. */
50bc7936 5418 if (!fh->is_func)
b34976b6 5419 return TRUE;
e86ce104 5420
50bc7936 5421 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5422 if (ent->plt.refcount > 0)
5423 break;
50bc7936
AM		 5424 if (ent == NULL
5425 || fh->elf.root.root.string[0] != '.'
5426 || fh->elf.root.root.string[1] == '\0')
5427 return TRUE;
5bd4f169 5428
50bc7936
AM		 5429 /* Find the corresponding function descriptor symbol. Create it
5430 as undefined if necessary. */
5bd4f169 5431
50bc7936
AM		 5432 fdh = get_fdh (fh, htab);
5433 if (fdh != NULL)
5434 while (fdh->elf.root.type == bfd_link_hash_indirect
5435 || fdh->elf.root.type == bfd_link_hash_warning)
5436 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5437
50bc7936
AM		 5438 if (fdh == NULL
5439 && info->shared
5440 && (fh->elf.root.type == bfd_link_hash_undefined
5441 || fh->elf.root.type == bfd_link_hash_undefweak))
5442 {
908b32fc 5443 fdh = make_fdh (info, fh);
bb700d78
AM		 5444 if (fdh == NULL)
5445 return FALSE;
50bc7936 5446 }
648cca2c 5447
908b32fc
AM		 5448 /* Fake function descriptors are made undefweak. If the function
5449 code symbol is strong undefined, make the fake sym the same. */
5450
5451 if (fdh != NULL
5452 && fdh->fake
5453 && fdh->elf.root.type == bfd_link_hash_undefweak
5454 && fh->elf.root.type == bfd_link_hash_undefined)
5455 {
5456 fdh->elf.root.type = bfd_link_hash_undefined;
5457 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5458 }
5459
50bc7936 5460 if (fdh != NULL
f5385ebf 5461 && !fdh->elf.forced_local
50bc7936 5462 && (info->shared
f5385ebf
AM		 5463 || fdh->elf.def_dynamic
5464 || fdh->elf.ref_dynamic
50bc7936
AM		 5465 || (fdh->elf.root.type == bfd_link_hash_undefweak
5466 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5467 {
5468 if (fdh->elf.dynindx == -1)
c152c796 5469 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5470 return FALSE;
f5385ebf
AM		 5471 fdh->elf.ref_regular |= fh->elf.ref_regular;
5472 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5473 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5474 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5475 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5476 {
40d16e0b 5477 move_plt_plist (fh, fdh);
f5385ebf 5478 fdh->elf.needs_plt = 1;
e86ce104 5479 }
50bc7936 5480 fdh->is_func_descriptor = 1;
34814b9f
AM		 5481 fdh->oh = fh;
5482 fh->oh = fdh;
e86ce104
AM		 5483 }
5484
50bc7936
AM		 5485 /* Now that the info is on the function descriptor, clear the
5486 function code sym info. Any function code syms for which we
5487 don't have a definition in a regular file, we force local.
5488 This prevents a shared library from exporting syms that have
5489 been imported from another library. Function code syms that
5490 are really in the library we must leave global to prevent the
5491 linker dragging in a definition from a static library. */
93f3fa99
AM		 5492 force_local = (!fh->elf.def_regular
5493 || fdh == NULL
5494 || !fdh->elf.def_regular
5495 || fdh->elf.forced_local);
50bc7936
AM		 5496 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5497
b34976b6 5498 return TRUE;
e86ce104 5499}
40b8271b 5500
e86ce104 5501/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5502 this hook to a) provide some gcc support functions, and b) transfer
5503 dynamic linking information gathered so far on function code symbol
5504 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5505
b34976b6 5506static bfd_boolean
4ce794b7
AM		 5507ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5508 struct bfd_link_info *info)
e86ce104
AM		 5509{
5510 struct ppc_link_hash_table *htab;
82bd7b59 5511 unsigned int i;
deb0e272
AM		 5512 const struct sfpr_def_parms funcs[] =
5513 {
5514 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5515 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5516 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5517 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5518 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5519 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5520 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5521 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5522 { "._savef", 14, 31, savefpr, savefpr1_tail },
5523 { "._restf", 14, 31, restfpr, restfpr1_tail },
5524 { "_savevr_", 20, 31, savevr, savevr_tail },
5525 { "_restvr_", 20, 31, restvr, restvr_tail }
5526 };
e86ce104
AM		 5527
5528 htab = ppc_hash_table (info);
82bd7b59
AM		 5529 if (htab->sfpr == NULL)
5530 /* We don't have any relocs. */
b34976b6 5531 return TRUE;
82bd7b59 5532
deb0e272
AM		 5533 /* Provide any missing _save* and _rest* functions. */
5534 htab->sfpr->size = 0;
5535 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5536 if (!sfpr_define (info, &funcs[i]))
5537 return FALSE;
82bd7b59 5538
4ce794b7 5539 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5540
eea6121a 5541 if (htab->sfpr->size == 0)
deb0e272 5542 _bfd_strip_section_from_output (info, htab->sfpr);
82bd7b59 5543
b34976b6 5544 return TRUE;
e86ce104
AM		 5545}
5546
5547/* Adjust a symbol defined by a dynamic object and referenced by a
5548 regular object. The current definition is in some section of the
5549 dynamic object, but we're not including those sections. We have to
5550 change the definition to something the rest of the link can
5551 understand. */
5552
b34976b6 5553static bfd_boolean
4ce794b7
AM		 5554ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5555 struct elf_link_hash_entry *h)
e86ce104
AM		 5556{
5557 struct ppc_link_hash_table *htab;
e86ce104
AM		 5558 asection *s;
5559 unsigned int power_of_two;
5560
5561 htab = ppc_hash_table (info);
5562
5563 /* Deal with function syms. */
5564 if (h->type == STT_FUNC
f5385ebf 5565 || h->needs_plt)
e86ce104
AM		 5566 {
5567 /* Clear procedure linkage table information for any symbol that
5568 won't need a .plt entry. */
411e1bfb
AM		 5569 struct plt_entry *ent;
5570 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5571 if (ent->plt.refcount > 0)
5572 break;
8387904d 5573 if (ent == NULL
9c7a29a3
AM		 5574 || SYMBOL_CALLS_LOCAL (info, h)
5575 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5576 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5577 {
411e1bfb 5578 h->plt.plist = NULL;
f5385ebf 5579 h->needs_plt = 0;
40b8271b 5580 }
5bd4f169 5581 }
bbd7ec4a 5582 else
411e1bfb 5583 h->plt.plist = NULL;
5bd4f169
AM		 5584
5585 /* If this is a weak symbol, and there is a real definition, the
5586 processor independent code will have arranged for us to see the
5587 real definition first, and we can just use the same value. */
f6e332e6 5588 if (h->u.weakdef != NULL)
5bd4f169 5589 {
f6e332e6
AM		 5590 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5591 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5592 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5593 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5594 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5595 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5596 return TRUE;
5bd4f169
AM		 5597 }
5598
5bd4f169
AM		 5599 /* If we are creating a shared library, we must presume that the
5600 only references to the symbol are via the global offset table.
5601 For such cases we need not do anything here; the relocations will
5602 be handled correctly by relocate_section. */
5603 if (info->shared)
b34976b6 5604 return TRUE;
5bd4f169 5605
65f38f15
AM		 5606 /* If there are no references to this symbol that do not use the
5607 GOT, we don't need to generate a copy reloc. */
f5385ebf 5608 if (!h->non_got_ref)
b34976b6 5609 return TRUE;
65f38f15 5610
f4656909 5611 if (ELIMINATE_COPY_RELOCS)
65f38f15 5612 {
f4656909
AM		 5613 struct ppc_link_hash_entry * eh;
5614 struct ppc_dyn_relocs *p;
65f38f15 5615
f4656909
AM		 5616 eh = (struct ppc_link_hash_entry *) h;
5617 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5618 {
5619 s = p->sec->output_section;
5620 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5621 break;
5622 }
5623
5624 /* If we didn't find any dynamic relocs in read-only sections, then
5625 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5626 if (p == NULL)
5627 {
f5385ebf 5628 h->non_got_ref = 0;
f4656909
AM		 5629 return TRUE;
5630 }
65f38f15
AM		 5631 }
5632
5d35169e 5633 if (h->plt.plist != NULL)
97b639ba
AM		 5634 {
5635 /* We should never get here, but unfortunately there are versions
5636 of gcc out there that improperly (for this ABI) put initialized
5637 function pointers, vtable refs and suchlike in read-only
5638 sections. Allow them to proceed, but warn that this might
5639 break at runtime. */
5640 (*_bfd_error_handler)
5641 (_("copy reloc against `%s' requires lazy plt linking; "
5642 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5643 h->root.root.string);
5644 }
5d35169e
AM		 5645
5646 /* This is a reference to a symbol defined by a dynamic object which
5647 is not a function. */
5648
5bd4f169
AM		 5649 /* We must allocate the symbol in our .dynbss section, which will
5650 become part of the .bss section of the executable. There will be
5651 an entry for this symbol in the .dynsym section. The dynamic
5652 object will contain position independent code, so all references
5653 from the dynamic object to this symbol will go through the global
5654 offset table. The dynamic linker will use the .dynsym entry to
5655 determine the address it must put in the global offset table, so
5656 both the dynamic object and the regular object will refer to the
5657 same memory location for the variable. */
5bd4f169 5658
04c9666a
AM		 5659 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5660 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5661 runtime process image. We need to remember the offset into the
5662 .rela.bss section we are going to use. */
5663 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5664 {
eea6121a 5665 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5666 h->needs_copy = 1;
5bd4f169
AM		 5667 }
5668
5669 /* We need to figure out the alignment required for this symbol. I
5670 have no idea how ELF linkers handle this. */
5671 power_of_two = bfd_log2 (h->size);
5672 if (power_of_two > 4)
5673 power_of_two = 4;
5674
5675 /* Apply the required alignment. */
4ce794b7 5676 s = htab->dynbss;
eea6121a 5677 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5678 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5679 {
65f38f15 5680 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5681 return FALSE;
5bd4f169
AM		 5682 }
5683
5684 /* Define the symbol as being at this point in the section. */
5685 h->root.u.def.section = s;
eea6121a 5686 h->root.u.def.value = s->size;
5bd4f169
AM		 5687
5688 /* Increment the section size to make room for the symbol. */
eea6121a 5689 s->size += h->size;
5bd4f169 5690
b34976b6 5691 return TRUE;
5bd4f169
AM		 5692}
5693
e86ce104
AM		 5694/* If given a function descriptor symbol, hide both the function code
5695 sym and the descriptor. */
5696static void
4ce794b7
AM		 5697ppc64_elf_hide_symbol (struct bfd_link_info *info,
5698 struct elf_link_hash_entry *h,
5699 bfd_boolean force_local)
e86ce104 5700{
34814b9f 5701 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5702 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5703
34814b9f
AM		 5704 eh = (struct ppc_link_hash_entry *) h;
5705 if (eh->is_func_descriptor)
e86ce104 5706 {
34814b9f 5707 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5708
721956f4 5709 if (fh == NULL)
d1329ca3
AM		 5710 {
5711 const char *p, *q;
5712 struct ppc_link_hash_table *htab;
5713 char save;
5714
5715 /* We aren't supposed to use alloca in BFD because on
5716 systems which do not have alloca the version in libiberty
5717 calls xmalloc, which might cause the program to crash
5718 when it runs out of memory. This function doesn't have a
5719 return status, so there's no way to gracefully return an
5720 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5721 accessed; It's either a string in an ELF string table,
5722 or allocated in an objalloc structure. */
d1329ca3 5723
34814b9f 5724 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5725 save = *p;
5726 *(char *) p = '.';
5727 htab = ppc_hash_table (info);
34814b9f
AM		 5728 fh = (struct ppc_link_hash_entry *)
5729 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5730 *(char *) p = save;
5731
5732 /* Unfortunately, if it so happens that the string we were
5733 looking for was allocated immediately before this string,
5734 then we overwrote the string terminator. That's the only
5735 reason the lookup should fail. */
5736 if (fh == NULL)
5737 {
34814b9f
AM		 5738 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5739 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5740 --q, --p;
34814b9f
AM		 5741 if (q < eh->elf.root.root.string && *p == '.')
5742 fh = (struct ppc_link_hash_entry *)
5743 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5744 }
5745 if (fh != NULL)
5746 {
34814b9f
AM		 5747 eh->oh = fh;
5748 fh->oh = eh;
d1329ca3
AM		 5749 }
5750 }
e86ce104 5751 if (fh != NULL)
34814b9f 5752 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5753 }
5754}
5755
411e1bfb 5756static bfd_boolean
8843416a
AM		 5757get_sym_h (struct elf_link_hash_entry **hp,
5758 Elf_Internal_Sym **symp,
5759 asection **symsecp,
5760 char **tls_maskp,
5761 Elf_Internal_Sym **locsymsp,
5762 unsigned long r_symndx,
5763 bfd *ibfd)
411e1bfb
AM		 5764{
5765 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5766
5767 if (r_symndx >= symtab_hdr->sh_info)
5768 {
5769 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5770 struct elf_link_hash_entry *h;
5771
5772 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5773 while (h->root.type == bfd_link_hash_indirect
5774 || h->root.type == bfd_link_hash_warning)
5775 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5776
5777 if (hp != NULL)
5778 *hp = h;
5779
5780 if (symp != NULL)
5781 *symp = NULL;
5782
5783 if (symsecp != NULL)
5784 {
5785 asection *symsec = NULL;
5786 if (h->root.type == bfd_link_hash_defined
5787 || h->root.type == bfd_link_hash_defweak)
5788 symsec = h->root.u.def.section;
5789 *symsecp = symsec;
5790 }
5791
e7b938ca 5792 if (tls_maskp != NULL)
411e1bfb
AM		 5793 {
5794 struct ppc_link_hash_entry *eh;
5795
5796 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5797 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5798 }
5799 }
5800 else
5801 {
5802 Elf_Internal_Sym *sym;
5803 Elf_Internal_Sym *locsyms = *locsymsp;
5804
5805 if (locsyms == NULL)
5806 {
5807 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5808 if (locsyms == NULL)
5809 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5810 symtab_hdr->sh_info,
5811 0, NULL, NULL, NULL);
5812 if (locsyms == NULL)
5813 return FALSE;
5814 *locsymsp = locsyms;
5815 }
5816 sym = locsyms + r_symndx;
5817
5818 if (hp != NULL)
5819 *hp = NULL;
5820
5821 if (symp != NULL)
5822 *symp = sym;
5823
5824 if (symsecp != NULL)
5825 {
5826 asection *symsec = NULL;
5827 if ((sym->st_shndx != SHN_UNDEF
5828 && sym->st_shndx < SHN_LORESERVE)
5829 || sym->st_shndx > SHN_HIRESERVE)
5830 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5831 *symsecp = symsec;
5832 }
5833
e7b938ca 5834 if (tls_maskp != NULL)
411e1bfb
AM		 5835 {
5836 struct got_entry **lgot_ents;
e7b938ca 5837 char *tls_mask;
411e1bfb 5838
e7b938ca 5839 tls_mask = NULL;
411e1bfb
AM		 5840 lgot_ents = elf_local_got_ents (ibfd);
5841 if (lgot_ents != NULL)
5842 {
e7b938ca
AM		 5843 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5844 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5845 }
e7b938ca 5846 *tls_maskp = tls_mask;
411e1bfb
AM		 5847 }
5848 }
5849 return TRUE;
5850}
5851
e7b938ca 5852/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5853 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5854 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5855
5856static int
0d4792f7
AM		 5857get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5858 Elf_Internal_Sym **locsymsp,
4ce794b7 5859 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5860{
5861 unsigned long r_symndx;
0d4792f7 5862 int next_r;
411e1bfb
AM		 5863 struct elf_link_hash_entry *h;
5864 Elf_Internal_Sym *sym;
5865 asection *sec;
5866 bfd_vma off;
5867
5868 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5869 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5870 return 0;
411e1bfb 5871
e7b938ca 5872 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5873 || sec == NULL
5874 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5875 return 1;
411e1bfb
AM		 5876
5877 /* Look inside a TOC section too. */
5878 if (h != NULL)
5879 {
5880 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5881 off = h->root.u.def.value;
5882 }
5883 else
5884 off = sym->st_value;
5885 off += rel->r_addend;
5886 BFD_ASSERT (off % 8 == 0);
5887 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5888 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5889 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5890 return 0;
0d4792f7
AM		 5891 if (toc_symndx != NULL)
5892 *toc_symndx = r_symndx;
5893 if ((h == NULL
5894 || ((h->root.type == bfd_link_hash_defined
5895 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5896 && !h->def_dynamic))
0d4792f7
AM		 5897 && (next_r == -1 || next_r == -2))
5898 return 1 - next_r;
951fd09b 5899 return 1;
411e1bfb
AM		 5900}
5901
754021d0 5902/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5903 code for the old ABI, these will already have been done. */
754021d0
AM		 5904
5905static bfd_boolean
5906adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5907{
5908 struct ppc_link_hash_entry *eh;
5909 asection *sym_sec;
5910 long *opd_adjust;
5911
5912 if (h->root.type == bfd_link_hash_indirect)
5913 return TRUE;
5914
5915 if (h->root.type == bfd_link_hash_warning)
5916 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5917
5918 if (h->root.type != bfd_link_hash_defined
5919 && h->root.type != bfd_link_hash_defweak)
5920 return TRUE;
5921
5922 eh = (struct ppc_link_hash_entry *) h;
5923 if (eh->adjust_done)
5924 return TRUE;
5925
5926 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 5927 opd_adjust = get_opd_info (sym_sec);
5928 if (opd_adjust != NULL)
754021d0 5929 {
3f764659 5930 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 5931 if (adjust == -1)
5932 {
5933 /* This entry has been deleted. */
81688140
AM		 5934 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5935 if (dsec == NULL)
5936 {
5937 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5938 if (elf_discarded_section (dsec))
5939 {
5940 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5941 break;
5942 }
5943 }
4025353c 5944 eh->elf.root.u.def.value = 0;
81688140 5945 eh->elf.root.u.def.section = dsec;
4025353c
AM		 5946 }
5947 else
5948 eh->elf.root.u.def.value += adjust;
754021d0
AM		 5949 eh->adjust_done = 1;
5950 }
5951 return TRUE;
5952}
5953
5954/* Remove unused Official Procedure Descriptor entries. Currently we
5955 only remove those associated with functions in discarded link-once
5956 sections, or weakly defined functions that have been overridden. It
5957 would be possible to remove many more entries for statically linked
5958 applications. */
5959
b34976b6 5960bfd_boolean
3f764659
JJ		 5961ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5962 bfd_boolean non_overlapping)
1e2f5b6e
AM		 5963{
5964 bfd *ibfd;
754021d0 5965 bfd_boolean some_edited = FALSE;
3f764659 5966 asection *need_pad = NULL;
1e2f5b6e 5967
411e1bfb 5968 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 5969 {
5970 asection *sec;
5971 Elf_Internal_Rela *relstart, *rel, *relend;
5972 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 5973 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 5974 struct elf_link_hash_entry **sym_hashes;
5975 bfd_vma offset;
d6fe2dc1 5976 bfd_size_type amt;
4025353c 5977 long *opd_adjust;
3f764659
JJ		 5978 bfd_boolean need_edit, add_aux_fields;
5979 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 5980
5981 sec = bfd_get_section_by_name (ibfd, ".opd");
5982 if (sec == NULL)
5983 continue;
5984
3f764659 5985 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 5986 opd_adjust = get_opd_info (sec);
5987 if (opd_adjust == NULL)
d6fe2dc1 5988 {
4b85d634
AM		 5989 /* check_relocs hasn't been called. Must be a ld -r link
5990 or --just-symbols object. */
4025353c
AM		 5991 opd_adjust = bfd_zalloc (obfd, amt);
5992 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 5993 }
4025353c 5994 memset (opd_adjust, 0, amt);
1e2f5b6e 5995
4b85d634
AM		 5996 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5997 continue;
5998
1e2f5b6e
AM		 5999 if (sec->output_section == bfd_abs_section_ptr)
6000 continue;
6001
6002 /* Look through the section relocs. */
6003 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6004 continue;
6005
6cdc0ccc 6006 local_syms = NULL;
1e2f5b6e
AM		 6007 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6008 sym_hashes = elf_sym_hashes (ibfd);
6009
6010 /* Read the relocations. */
4ce794b7 6011 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6012 info->keep_memory);
1e2f5b6e 6013 if (relstart == NULL)
b34976b6 6014 return FALSE;
1e2f5b6e
AM		 6015
6016 /* First run through the relocs to check they are sane, and to
6017 determine whether we need to edit this opd section. */
b34976b6 6018 need_edit = FALSE;
3f764659 6019 need_pad = sec;
1e2f5b6e
AM		 6020 offset = 0;
6021 relend = relstart + sec->reloc_count;
50bc7936 6022 for (rel = relstart; rel < relend; )
1e2f5b6e 6023 {
04c9666a 6024 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6025 unsigned long r_symndx;
6026 asection *sym_sec;
6027 struct elf_link_hash_entry *h;
6028 Elf_Internal_Sym *sym;
6029
3f764659 6030 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6031 only interested in the reloc pointing to a function entry
6032 point. */
50bc7936
AM		 6033 if (rel->r_offset != offset
6034 || rel + 1 >= relend
6035 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6036 {
6037 /* If someone messes with .opd alignment then after a
6038 "ld -r" we might have padding in the middle of .opd.
6039 Also, there's nothing to prevent someone putting
6040 something silly in .opd with the assembler. No .opd
b34976b6 6041 optimization for them! */
3f764659 6042 broken_opd:
1e2f5b6e 6043 (*_bfd_error_handler)
d003868e 6044 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6045 need_edit = FALSE;
1e2f5b6e
AM		 6046 break;
6047 }
6048
50bc7936
AM		 6049 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6050 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6051 {
6052 (*_bfd_error_handler)
d003868e
AM		 6053 (_("%B: unexpected reloc type %u in .opd section"),
6054 ibfd, r_type);
50bc7936
AM		 6055 need_edit = FALSE;
6056 break;
6057 }
6058
1e2f5b6e 6059 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6060 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6061 r_symndx, ibfd))
50bc7936 6062 goto error_ret;
1e2f5b6e
AM		 6063
6064 if (sym_sec == NULL || sym_sec->owner == NULL)
6065 {
411e1bfb
AM		 6066 const char *sym_name;
6067 if (h != NULL)
6068 sym_name = h->root.root.string;
6069 else
be8dd2ca 6070 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
411e1bfb 6071
1e2f5b6e 6072 (*_bfd_error_handler)
d003868e
AM		 6073 (_("%B: undefined sym `%s' in .opd section"),
6074 ibfd, sym_name);
b34976b6 6075 need_edit = FALSE;
1e2f5b6e
AM		 6076 break;
6077 }
6078
51020317
AM		 6079 /* opd entries are always for functions defined in the
6080 current input bfd. If the symbol isn't defined in the
6081 input bfd, then we won't be using the function in this
6082 bfd; It must be defined in a linkonce section in another
6083 bfd, or is weak. It's also possible that we are
6084 discarding the function due to a linker script /DISCARD/,
6085 which we test for via the output_section. */
6086 if (sym_sec->owner != ibfd
6087 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6088 need_edit = TRUE;
1e2f5b6e 6089
50bc7936 6090 rel += 2;
3f764659
JJ		 6091 if (rel == relend
6092 || (rel + 1 == relend && rel->r_offset == offset + 16))
6093 {
6094 if (sec->size == offset + 24)
6095 {
6096 need_pad = NULL;
6097 break;
6098 }
6099 if (rel == relend && sec->size == offset + 16)
6100 {
6101 cnt_16b++;
6102 break;
6103 }
6104 goto broken_opd;
6105 }
6106
6107 if (rel->r_offset == offset + 24)
6108 offset += 24;
6109 else if (rel->r_offset != offset + 16)
6110 goto broken_opd;
6111 else if (rel + 1 < relend
6112 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6113 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6114 {
6115 offset += 16;
6116 cnt_16b++;
6117 }
6118 else if (rel + 2 < relend
6119 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6120 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6121 {
6122 offset += 24;
6123 rel += 1;
6124 }
6125 else
6126 goto broken_opd;
1e2f5b6e
AM		 6127 }
6128
3f764659
JJ		 6129 add_aux_fields = non_overlapping && cnt_16b > 0;
6130
6131 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6132 {
6133 Elf_Internal_Rela *write_rel;
6134 bfd_byte *rptr, *wptr;
3f764659 6135 bfd_byte *new_contents = NULL;
b34976b6 6136 bfd_boolean skip;
3f764659 6137 long opd_ent_size;
1e2f5b6e
AM		 6138
6139 /* This seems a waste of time as input .opd sections are all
6140 zeros as generated by gcc, but I suppose there's no reason
6141 this will always be so. We might start putting something in
6142 the third word of .opd entries. */
6143 if ((sec->flags & SEC_IN_MEMORY) == 0)
6144 {
eea6121a
AM		 6145 bfd_byte *loc;
6146 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6147 {
eea6121a
AM		 6148 if (loc != NULL)
6149 free (loc);
50bc7936 6150 error_ret:
6cdc0ccc
AM		 6151 if (local_syms != NULL
6152 && symtab_hdr->contents != (unsigned char *) local_syms)
6153 free (local_syms);
6cdc0ccc
AM		 6154 if (elf_section_data (sec)->relocs != relstart)
6155 free (relstart);
b34976b6 6156 return FALSE;
6cdc0ccc 6157 }
1e2f5b6e
AM		 6158 sec->contents = loc;
6159 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6160 }
6161
6162 elf_section_data (sec)->relocs = relstart;
6163
6164 wptr = sec->contents;
6165 rptr = sec->contents;
3f764659
JJ		 6166 new_contents = sec->contents;
6167
6168 if (add_aux_fields)
6169 {
6170 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6171 if (new_contents == NULL)
6172 return FALSE;
6173 need_pad = FALSE;
6174 wptr = new_contents;
6175 }
6176
1e2f5b6e 6177 write_rel = relstart;
b34976b6 6178 skip = FALSE;
1e2f5b6e 6179 offset = 0;
3f764659 6180 opd_ent_size = 0;
1e2f5b6e
AM		 6181 for (rel = relstart; rel < relend; rel++)
6182 {
50bc7936
AM		 6183 unsigned long r_symndx;
6184 asection *sym_sec;
6185 struct elf_link_hash_entry *h;
6186 Elf_Internal_Sym *sym;
6187
6188 r_symndx = ELF64_R_SYM (rel->r_info);
6189 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6190 r_symndx, ibfd))
50bc7936
AM		 6191 goto error_ret;
6192
1e2f5b6e
AM		 6193 if (rel->r_offset == offset)
6194 {
50bc7936 6195 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6196
6197 /* See if the .opd entry is full 24 byte or
6198 16 byte (with fd_aux entry overlapped with next
6199 fd_func). */
6200 opd_ent_size = 24;
6201 if ((rel + 2 == relend && sec->size == offset + 16)
6202 || (rel + 3 < relend
6203 && rel[2].r_offset == offset + 16
6204 && rel[3].r_offset == offset + 24
6205 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6206 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6207 opd_ent_size = 16;
6208
4025353c
AM		 6209 if (h != NULL
6210 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6211 {
6212 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6213 ppc_hash_table (info));
6214 if (fdh != NULL
6215 && fdh->elf.root.type != bfd_link_hash_defined
6216 && fdh->elf.root.type != bfd_link_hash_defweak)
6217 fdh = NULL;
6218 }
1e2f5b6e 6219
51020317
AM		 6220 skip = (sym_sec->owner != ibfd
6221 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6222 if (skip)
6223 {
4025353c 6224 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6225 {
6226 /* Arrange for the function descriptor sym
6227 to be dropped. */
d6fe2dc1
AM		 6228 fdh->elf.root.u.def.value = 0;
6229 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6230 }
3f764659 6231 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6232 }
6233 else
1e2f5b6e
AM		 6234 {
6235 /* We'll be keeping this opd entry. */
6236
4025353c 6237 if (fdh != NULL)
1e2f5b6e 6238 {
754021d0
AM		 6239 /* Redefine the function descriptor symbol to
6240 this location in the opd section. It is
6241 necessary to update the value here rather
6242 than using an array of adjustments as we do
6243 for local symbols, because various places
6244 in the generic ELF code use the value
6245 stored in u.def.value. */
3f764659 6246 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6247 fdh->adjust_done = 1;
1e2f5b6e 6248 }
754021d0
AM		 6249
6250 /* Local syms are a bit tricky. We could
6251 tweak them as they can be cached, but
6252 we'd need to look through the local syms
6253 for the function descriptor sym which we
6254 don't have at the moment. So keep an
6255 array of adjustments. */
3f764659
JJ		 6256 opd_adjust[rel->r_offset / 8]
6257 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6258
6259 if (wptr != rptr)
3f764659
JJ		 6260 memcpy (wptr, rptr, opd_ent_size);
6261 wptr += opd_ent_size;
6262 if (add_aux_fields && opd_ent_size == 16)
6263 {
6264 memset (wptr, '\0', 8);
6265 wptr += 8;
6266 }
1e2f5b6e 6267 }
3f764659
JJ		 6268 rptr += opd_ent_size;
6269 offset += opd_ent_size;
1e2f5b6e
AM		 6270 }
6271
50bc7936
AM		 6272 if (skip)
6273 {
6274 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6275 if (info->shared)
6276 {
6277 /* We won't be needing dynamic relocs here. */
6278 struct ppc_dyn_relocs **pp;
6279 struct ppc_dyn_relocs *p;
6280
6281 if (h != NULL)
6282 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6283 else if (sym_sec != NULL)
6284 pp = ((struct ppc_dyn_relocs **)
6285 &elf_section_data (sym_sec)->local_dynrel);
6286 else
6287 pp = ((struct ppc_dyn_relocs **)
6288 &elf_section_data (sec)->local_dynrel);
6289 while ((p = *pp) != NULL)
6290 {
6291 if (p->sec == sec)
6292 {
6293 p->count -= 1;
6294 if (p->count == 0)
d37c89e5 6295 *pp = p->next;
50bc7936
AM		 6296 break;
6297 }
6298 pp = &p->next;
6299 }
6300 }
6301 }
6302 else
1e2f5b6e 6303 {
50bc7936
AM		 6304 /* We need to adjust any reloc offsets to point to the
6305 new opd entries. While we're at it, we may as well
6306 remove redundant relocs. */
3f764659 6307 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6308 if (write_rel != rel)
6309 memcpy (write_rel, rel, sizeof (*rel));
6310 ++write_rel;
6311 }
6312 }
6313
3f764659 6314 sec->size = wptr - new_contents;
1e2f5b6e 6315 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6316 if (add_aux_fields)
6317 {
6318 free (sec->contents);
6319 sec->contents = new_contents;
6320 }
6321
cdcf6e38
AM		 6322 /* Fudge the size too, as this is used later in
6323 elf_bfd_final_link if we are emitting relocs. */
6324 elf_section_data (sec)->rel_hdr.sh_size
6325 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6326 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6327 some_edited = TRUE;
1e2f5b6e 6328 }
6cdc0ccc 6329 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6330 free (relstart);
6cdc0ccc 6331
411e1bfb
AM		 6332 if (local_syms != NULL
6333 && symtab_hdr->contents != (unsigned char *) local_syms)
6334 {
6335 if (!info->keep_memory)
6336 free (local_syms);
6337 else
6338 symtab_hdr->contents = (unsigned char *) local_syms;
6339 }
6340 }
6341
754021d0
AM		 6342 if (some_edited)
6343 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6344
3f764659
JJ		 6345 /* If we are doing a final link and the last .opd entry is just 16 byte
6346 long, add a 8 byte padding after it. */
6347 if (need_pad != NULL && !info->relocatable)
6348 {
6349 bfd_byte *p;
6350
6351 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6352 {
6353 BFD_ASSERT (need_pad->size > 0);
6354
6355 p = bfd_malloc (need_pad->size + 8);
6356 if (p == NULL)
6357 return FALSE;
699733f6 6358
3f764659
JJ		 6359 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6360 p, 0, need_pad->size))
6361 return FALSE;
6362
6363 need_pad->contents = p;
6364 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6365 }
6366 else
6367 {
6368 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6369 if (p == NULL)
6370 return FALSE;
6371
6372 need_pad->contents = p;
6373 }
6374
6375 memset (need_pad->contents + need_pad->size, 0, 8);
6376 need_pad->size += 8;
6377 }
6378
411e1bfb
AM		 6379 return TRUE;
6380}
6381
e1918d23 6382/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6383
e1918d23 6384asection *
4ce794b7 6385ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6386{
411e1bfb
AM		 6387 struct ppc_link_hash_table *htab;
6388
411e1bfb 6389 htab = ppc_hash_table (info);
a48ebf4d
AM		 6390 if (htab->tls_get_addr != NULL)
6391 {
8387904d 6392 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6393
8387904d
AM		 6394 while (h->elf.root.type == bfd_link_hash_indirect
6395 || h->elf.root.type == bfd_link_hash_warning)
6396 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6397
6398 htab->tls_get_addr = h;
8387904d
AM		 6399
6400 if (htab->tls_get_addr_fd == NULL
6401 && h->oh != NULL
c4f68ce3
AM		 6402 && h->oh->is_func_descriptor
6403 && (h->oh->elf.root.type == bfd_link_hash_defined
6404 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6405 htab->tls_get_addr_fd = h->oh;
6406 }
6407
6408 if (htab->tls_get_addr_fd != NULL)
6409 {
6410 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6411
6412 while (h->elf.root.type == bfd_link_hash_indirect
6413 || h->elf.root.type == bfd_link_hash_warning)
6414 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6415
6416 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6417 }
6418
e1918d23 6419 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6420}
411e1bfb 6421
951fd09b
AM		 6422/* Run through all the TLS relocs looking for optimization
6423 opportunities. The linker has been hacked (see ppc64elf.em) to do
6424 a preliminary section layout so that we know the TLS segment
6425 offsets. We can't optimize earlier because some optimizations need
6426 to know the tp offset, and we need to optimize before allocating
6427 dynamic relocations. */
6428
6429bfd_boolean
4ce794b7 6430ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6431{
6432 bfd *ibfd;
6433 asection *sec;
6434 struct ppc_link_hash_table *htab;
6435
1049f94e 6436 if (info->relocatable || info->shared)
411e1bfb
AM		 6437 return TRUE;
6438
951fd09b 6439 htab = ppc_hash_table (info);
411e1bfb
AM		 6440 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6441 {
6442 Elf_Internal_Sym *locsyms = NULL;
6443
6444 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6445 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6446 {
6447 Elf_Internal_Rela *relstart, *rel, *relend;
6448 int expecting_tls_get_addr;
6449
6450 /* Read the relocations. */
4ce794b7 6451 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6452 info->keep_memory);
411e1bfb
AM		 6453 if (relstart == NULL)
6454 return FALSE;
6455
6456 expecting_tls_get_addr = 0;
6457 relend = relstart + sec->reloc_count;
6458 for (rel = relstart; rel < relend; rel++)
6459 {
6460 enum elf_ppc64_reloc_type r_type;
6461 unsigned long r_symndx;
6462 struct elf_link_hash_entry *h;
6463 Elf_Internal_Sym *sym;
6464 asection *sym_sec;
e7b938ca
AM		 6465 char *tls_mask;
6466 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6467 bfd_vma value;
951fd09b 6468 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6469
6470 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6471 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6472 r_symndx, ibfd))
6473 {
6474 err_free_rel:
6475 if (elf_section_data (sec)->relocs != relstart)
6476 free (relstart);
6477 if (locsyms != NULL
6478 && (elf_tdata (ibfd)->symtab_hdr.contents
6479 != (unsigned char *) locsyms))
6480 free (locsyms);
6481 return FALSE;
6482 }
6483
6484 if (h != NULL)
6485 {
6486 if (h->root.type != bfd_link_hash_defined
6487 && h->root.type != bfd_link_hash_defweak)
6488 continue;
6489 value = h->root.u.def.value;
6490 }
6491 else
4025353c
AM		 6492 /* Symbols referenced by TLS relocs must be of type
6493 STT_TLS. So no need for .opd local sym adjust. */
6494 value = sym->st_value;
951fd09b 6495
411e1bfb 6496 ok_tprel = FALSE;
951fd09b
AM		 6497 is_local = FALSE;
6498 if (h == NULL
f5385ebf 6499 || !h->def_dynamic)
411e1bfb 6500 {
951fd09b 6501 is_local = TRUE;
411e1bfb
AM		 6502 value += sym_sec->output_offset;
6503 value += sym_sec->output_section->vma;
e1918d23 6504 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6505 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6506 < (bfd_vma) 1 << 32);
6507 }
6508
4ce794b7 6509 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6510 switch (r_type)
6511 {
6512 case R_PPC64_GOT_TLSLD16:
6513 case R_PPC64_GOT_TLSLD16_LO:
6514 case R_PPC64_GOT_TLSLD16_HI:
6515 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6516 /* These relocs should never be against a symbol
6517 defined in a shared lib. Leave them alone if
6518 that turns out to be the case. */
e717da7e 6519 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6520 if (!is_local)
6521 continue;
6522
951fd09b
AM		 6523 /* LD -> LE */
6524 tls_set = 0;
6525 tls_clear = TLS_LD;
e7b938ca 6526 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6527 expecting_tls_get_addr = 1;
6528 break;
6529
6530 case R_PPC64_GOT_TLSGD16:
6531 case R_PPC64_GOT_TLSGD16_LO:
6532 case R_PPC64_GOT_TLSGD16_HI:
6533 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6534 if (ok_tprel)
411e1bfb
AM		 6535 /* GD -> LE */
6536 tls_set = 0;
6537 else
6538 /* GD -> IE */
951fd09b
AM		 6539 tls_set = TLS_TLS | TLS_TPRELGD;
6540 tls_clear = TLS_GD;
e7b938ca 6541 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6542 expecting_tls_get_addr = 1;
6543 break;
6544
6545 case R_PPC64_GOT_TPREL16_DS:
6546 case R_PPC64_GOT_TPREL16_LO_DS:
6547 case R_PPC64_GOT_TPREL16_HI:
6548 case R_PPC64_GOT_TPREL16_HA:
6549 expecting_tls_get_addr = 0;
6550 if (ok_tprel)
6551 {
6552 /* IE -> LE */
6553 tls_set = 0;
6554 tls_clear = TLS_TPREL;
e7b938ca 6555 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6556 break;
6557 }
6558 else
6559 continue;
6560
6561 case R_PPC64_REL14:
6562 case R_PPC64_REL14_BRTAKEN:
6563 case R_PPC64_REL14_BRNTAKEN:
6564 case R_PPC64_REL24:
6565 if (h != NULL
8387904d
AM		 6566 && (h == &htab->tls_get_addr->elf
6567 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6568 {
6569 if (!expecting_tls_get_addr
6570 && rel != relstart
6571 && ((ELF64_R_TYPE (rel[-1].r_info)
6572 == R_PPC64_TOC16)
6573 || (ELF64_R_TYPE (rel[-1].r_info)
6574 == R_PPC64_TOC16_LO)))
6575 {
6576 /* Check for toc tls entries. */
6577 char *toc_tls;
951fd09b 6578 int retval;
411e1bfb 6579
0d4792f7 6580 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6581 rel - 1, ibfd);
6582 if (retval == 0)
411e1bfb
AM		 6583 goto err_free_rel;
6584 if (toc_tls != NULL)
951fd09b 6585 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6586 }
6587
6588 if (expecting_tls_get_addr)
6589 {
6590 struct plt_entry *ent;
6591 for (ent = h->plt.plist; ent; ent = ent->next)
6592 if (ent->addend == 0)
6593 {
6594 if (ent->plt.refcount > 0)
6595 ent->plt.refcount -= 1;
6596 break;
6597 }
6598 }
6599 }
6600 expecting_tls_get_addr = 0;
6601 continue;
6602
6603 case R_PPC64_TPREL64:
6604 expecting_tls_get_addr = 0;
6605 if (ok_tprel)
6606 {
6607 /* IE -> LE */
6608 tls_set = TLS_EXPLICIT;
6609 tls_clear = TLS_TPREL;
6610 break;
6611 }
6612 else
6613 continue;
6614
6615 case R_PPC64_DTPMOD64:
6616 expecting_tls_get_addr = 0;
951fd09b
AM		 6617 if (rel + 1 < relend
6618 && (rel[1].r_info
6619 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6620 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6621 {
951fd09b 6622 if (ok_tprel)
411e1bfb 6623 /* GD -> LE */
951fd09b 6624 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6625 else
6626 /* GD -> IE */
951fd09b
AM		 6627 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6628 tls_clear = TLS_GD;
411e1bfb
AM		 6629 }
6630 else
6631 {
951fd09b
AM		 6632 if (!is_local)
6633 continue;
6634
6635 /* LD -> LE */
6636 tls_set = TLS_EXPLICIT;
6637 tls_clear = TLS_LD;
411e1bfb
AM		 6638 }
6639 break;
6640
6641 default:
6642 expecting_tls_get_addr = 0;
6643 continue;
6644 }
6645
6646 if ((tls_set & TLS_EXPLICIT) == 0)
6647 {
6648 struct got_entry *ent;
6649
6650 /* Adjust got entry for this reloc. */
6651 if (h != NULL)
6652 ent = h->got.glist;
6653 else
6654 ent = elf_local_got_ents (ibfd)[r_symndx];
6655
6656 for (; ent != NULL; ent = ent->next)
6657 if (ent->addend == rel->r_addend
e717da7e 6658 && ent->owner == ibfd
e7b938ca 6659 && ent->tls_type == tls_type)
411e1bfb
AM		 6660 break;
6661 if (ent == NULL)
6662 abort ();
6663
6664 if (tls_set == 0)
6665 {
6666 /* We managed to get rid of a got entry. */
6667 if (ent->got.refcount > 0)
6668 ent->got.refcount -= 1;
6669 }
411e1bfb
AM		 6670 }
6671 else if (h != NULL)
6672 {
6673 struct ppc_link_hash_entry * eh;
6674 struct ppc_dyn_relocs **pp;
6675 struct ppc_dyn_relocs *p;
6676
6677 /* Adjust dynamic relocs. */
6678 eh = (struct ppc_link_hash_entry *) h;
6679 for (pp = &eh->dyn_relocs;
6680 (p = *pp) != NULL;
6681 pp = &p->next)
6682 if (p->sec == sec)
6683 {
6684 /* If we got rid of a DTPMOD/DTPREL reloc
6685 pair then we'll lose one or two dyn
6686 relocs. */
951fd09b 6687 if (tls_set == (TLS_EXPLICIT | TLS_GD))
411e1bfb 6688 p->count -= 1;
951fd09b 6689 p->count -= 1;
411e1bfb
AM		 6690 if (p->count == 0)
6691 *pp = p->next;
6692 break;
6693 }
6694 }
6695
e7b938ca
AM		 6696 *tls_mask |= tls_set;
6697 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6698 }
6699
6700 if (elf_section_data (sec)->relocs != relstart)
6701 free (relstart);
6702 }
6703
6704 if (locsyms != NULL
6705 && (elf_tdata (ibfd)->symtab_hdr.contents
6706 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6707 {
6708 if (!info->keep_memory)
411e1bfb 6709 free (locsyms);
6cdc0ccc 6710 else
411e1bfb 6711 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6712 }
1e2f5b6e 6713 }
b34976b6 6714 return TRUE;
1e2f5b6e 6715}
b34976b6 6716
c5614fa4
AM		 6717/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6718 the values of any global symbols in a toc section that has been
6719 edited. Globals in toc sections should be a rarity, so this function
6720 sets a flag if any are found in toc sections other than the one just
6721 edited, so that futher hash table traversals can be avoided. */
6722
6723struct adjust_toc_info
6724{
6725 asection *toc;
6726 unsigned long *skip;
6727 bfd_boolean global_toc_syms;
6728};
6729
6730static bfd_boolean
6731adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6732{
6733 struct ppc_link_hash_entry *eh;
6734 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6735
6736 if (h->root.type == bfd_link_hash_indirect)
6737 return TRUE;
6738
6739 if (h->root.type == bfd_link_hash_warning)
6740 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6741
6742 if (h->root.type != bfd_link_hash_defined
6743 && h->root.type != bfd_link_hash_defweak)
6744 return TRUE;
6745
6746 eh = (struct ppc_link_hash_entry *) h;
6747 if (eh->adjust_done)
6748 return TRUE;
6749
6750 if (eh->elf.root.u.def.section == toc_inf->toc)
6751 {
6752 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6753 if (skip != (unsigned long) -1)
6754 eh->elf.root.u.def.value -= skip;
6755 else
6756 {
6757 (*_bfd_error_handler)
6758 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6759 eh->elf.root.u.def.section = &bfd_abs_section;
6760 eh->elf.root.u.def.value = 0;
6761 }
6762 eh->adjust_done = 1;
6763 }
6764 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6765 toc_inf->global_toc_syms = TRUE;
6766
6767 return TRUE;
6768}
6769
6770/* Examine all relocs referencing .toc sections in order to remove
6771 unused .toc entries. */
6772
6773bfd_boolean
6774ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6775{
6776 bfd *ibfd;
6777 struct adjust_toc_info toc_inf;
6778
6779 toc_inf.global_toc_syms = TRUE;
6780 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6781 {
6782 asection *toc, *sec;
6783 Elf_Internal_Shdr *symtab_hdr;
6784 Elf_Internal_Sym *local_syms;
6785 struct elf_link_hash_entry **sym_hashes;
92b7a70f 6786 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 6787 unsigned long *skip, *drop;
6788 unsigned char *used;
6789 unsigned char *keep, last, some_unused;
6790
6791 toc = bfd_get_section_by_name (ibfd, ".toc");
6792 if (toc == NULL
92b7a70f 6793 || toc->size == 0
c5614fa4
AM		 6794 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6795 || elf_discarded_section (toc))
6796 continue;
6797
6798 local_syms = NULL;
6799 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6800 sym_hashes = elf_sym_hashes (ibfd);
6801
6802 /* Look at sections dropped from the final link. */
6803 skip = NULL;
6804 relstart = NULL;
6805 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6806 {
6807 if (sec->reloc_count == 0
6808 || !elf_discarded_section (sec)
6809 || get_opd_info (sec)
6810 || (sec->flags & SEC_ALLOC) == 0
6811 || (sec->flags & SEC_DEBUGGING) != 0)
6812 continue;
6813
6814 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6815 if (relstart == NULL)
6816 goto error_ret;
6817
6818 /* Run through the relocs to see which toc entries might be
6819 unused. */
6820 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6821 {
6822 enum elf_ppc64_reloc_type r_type;
6823 unsigned long r_symndx;
6824 asection *sym_sec;
6825 struct elf_link_hash_entry *h;
6826 Elf_Internal_Sym *sym;
6827 bfd_vma val;
6828
6829 r_type = ELF64_R_TYPE (rel->r_info);
6830 switch (r_type)
6831 {
6832 default:
6833 continue;
6834
6835 case R_PPC64_TOC16:
6836 case R_PPC64_TOC16_LO:
6837 case R_PPC64_TOC16_HI:
6838 case R_PPC64_TOC16_HA:
6839 case R_PPC64_TOC16_DS:
6840 case R_PPC64_TOC16_LO_DS:
6841 break;
6842 }
6843
6844 r_symndx = ELF64_R_SYM (rel->r_info);
6845 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6846 r_symndx, ibfd))
6847 goto error_ret;
6848
6849 if (sym_sec != toc)
6850 continue;
6851
6852 if (h != NULL)
6853 val = h->root.u.def.value;
6854 else
6855 val = sym->st_value;
6856 val += rel->r_addend;
6857
6858 if (val >= toc->size)
6859 continue;
6860
6861 /* Anything in the toc ought to be aligned to 8 bytes.
6862 If not, don't mark as unused. */
6863 if (val & 7)
6864 continue;
6865
6866 if (skip == NULL)
6867 {
6868 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6869 if (skip == NULL)
6870 goto error_ret;
6871 }
6872
6873 skip[val >> 3] = 1;
6874 }
6875
6876 if (elf_section_data (sec)->relocs != relstart)
6877 free (relstart);
6878 }
6879
6880 if (skip == NULL)
6881 continue;
6882
6883 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6884 if (used == NULL)
6885 {
6886 error_ret:
6887 if (local_syms != NULL
6888 && symtab_hdr->contents != (unsigned char *) local_syms)
6889 free (local_syms);
6890 if (sec != NULL
6891 && relstart != NULL
6892 && elf_section_data (sec)->relocs != relstart)
6893 free (relstart);
6894 if (skip != NULL)
6895 free (skip);
6896 return FALSE;
6897 }
6898
6899 /* Now check all kept sections that might reference the toc. */
6900 for (sec = ibfd->sections;
6901 sec != NULL;
6902 /* Check the toc itself last. */
6903 sec = (sec == toc ? NULL
6904 : sec->next == toc && sec->next->next ? sec->next->next
6905 : sec->next == NULL ? toc
6906 : sec->next))
6907 {
6908 int repeat;
6909
6910 if (sec->reloc_count == 0
6911 || elf_discarded_section (sec)
6912 || get_opd_info (sec)
6913 || (sec->flags & SEC_ALLOC) == 0
6914 || (sec->flags & SEC_DEBUGGING) != 0)
6915 continue;
6916
6917 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6918 if (relstart == NULL)
6919 goto error_ret;
6920
6921 /* Mark toc entries referenced as used. */
6922 repeat = 0;
6923 do
6924 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6925 {
6926 enum elf_ppc64_reloc_type r_type;
6927 unsigned long r_symndx;
6928 asection *sym_sec;
6929 struct elf_link_hash_entry *h;
6930 Elf_Internal_Sym *sym;
6931 bfd_vma val;
6932
6933 r_type = ELF64_R_TYPE (rel->r_info);
6934 switch (r_type)
6935 {
6936 case R_PPC64_TOC16:
6937 case R_PPC64_TOC16_LO:
6938 case R_PPC64_TOC16_HI:
6939 case R_PPC64_TOC16_HA:
6940 case R_PPC64_TOC16_DS:
6941 case R_PPC64_TOC16_LO_DS:
6942 /* In case we're taking addresses of toc entries. */
6943 case R_PPC64_ADDR64:
6944 break;
6945
6946 default:
6947 continue;
6948 }
6949
6950 r_symndx = ELF64_R_SYM (rel->r_info);
6951 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6952 r_symndx, ibfd))
6953 {
6954 free (used);
6955 goto error_ret;
6956 }
6957
6958 if (sym_sec != toc)
6959 continue;
6960
6961 if (h != NULL)
6962 val = h->root.u.def.value;
6963 else
6964 val = sym->st_value;
6965 val += rel->r_addend;
6966
6967 if (val >= toc->size)
6968 continue;
6969
6970 /* For the toc section, we only mark as used if
6971 this entry itself isn't unused. */
6972 if (sec == toc
6973 && !used[val >> 3]
6974 && (used[rel->r_offset >> 3]
6975 || !skip[rel->r_offset >> 3]))
6976 /* Do all the relocs again, to catch reference
6977 chains. */
6978 repeat = 1;
6979
6980 used[val >> 3] = 1;
6981 }
6982 while (repeat);
6983 }
6984
6985 /* Merge the used and skip arrays. Assume that TOC
6986 doublewords not appearing as either used or unused belong
6987 to to an entry more than one doubleword in size. */
6988 for (drop = skip, keep = used, last = 0, some_unused = 0;
6989 drop < skip + (toc->size + 7) / 8;
6990 ++drop, ++keep)
6991 {
6992 if (*keep)
6993 {
6994 *drop = 0;
6995 last = 0;
6996 }
6997 else if (*drop)
6998 {
6999 some_unused = 1;
7000 last = 1;
7001 }
7002 else
7003 *drop = last;
7004 }
7005
7006 free (used);
7007
7008 if (some_unused)
7009 {
7010 bfd_byte *contents, *src;
7011 unsigned long off;
7012
7013 /* Shuffle the toc contents, and at the same time convert the
7014 skip array from booleans into offsets. */
7015 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7016 goto error_ret;
7017
7018 elf_section_data (toc)->this_hdr.contents = contents;
7019
7020 for (src = contents, off = 0, drop = skip;
7021 src < contents + toc->size;
7022 src += 8, ++drop)
7023 {
7024 if (*drop)
7025 {
7026 *drop = (unsigned long) -1;
7027 off += 8;
7028 }
7029 else if (off != 0)
7030 {
7031 *drop = off;
7032 memcpy (src - off, src, 8);
7033 }
7034 }
7035 toc->rawsize = toc->size;
7036 toc->size = src - contents - off;
7037
92b7a70f
AM		 7038 if (toc->reloc_count != 0)
7039 {
7040 Elf_Internal_Rela *wrel;
7041 bfd_size_type sz;
c5614fa4 7042
92b7a70f
AM		 7043 /* Read toc relocs. */
7044 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7045 TRUE);
7046 if (relstart == NULL)
7047 goto error_ret;
7048
7049 /* Remove unused toc relocs, and adjust those we keep. */
7050 wrel = relstart;
7051 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7052 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7053 {
7054 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7055 wrel->r_info = rel->r_info;
7056 wrel->r_addend = rel->r_addend;
7057 ++wrel;
7058 }
7059 toc->reloc_count = wrel - relstart;
7060 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7061 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7062 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7063 }
c5614fa4
AM		 7064
7065 /* Adjust addends for relocs against the toc section sym. */
7066 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7067 {
7068 if (sec->reloc_count == 0
7069 || elf_discarded_section (sec))
7070 continue;
7071
7072 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7073 TRUE);
7074 if (relstart == NULL)
7075 goto error_ret;
7076
7077 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7078 {
7079 enum elf_ppc64_reloc_type r_type;
7080 unsigned long r_symndx;
7081 asection *sym_sec;
7082 struct elf_link_hash_entry *h;
7083 Elf_Internal_Sym *sym;
7084
7085 r_type = ELF64_R_TYPE (rel->r_info);
7086 switch (r_type)
7087 {
7088 default:
7089 continue;
7090
7091 case R_PPC64_TOC16:
7092 case R_PPC64_TOC16_LO:
7093 case R_PPC64_TOC16_HI:
7094 case R_PPC64_TOC16_HA:
7095 case R_PPC64_TOC16_DS:
7096 case R_PPC64_TOC16_LO_DS:
7097 case R_PPC64_ADDR64:
7098 break;
7099 }
7100
7101 r_symndx = ELF64_R_SYM (rel->r_info);
7102 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7103 r_symndx, ibfd))
7104 goto error_ret;
7105
7106 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7107 continue;
7108
7109 rel->r_addend -= skip[rel->r_addend >> 3];
7110 }
7111 }
7112
7113 /* We shouldn't have local or global symbols defined in the TOC,
7114 but handle them anyway. */
7115 if (local_syms != NULL)
7116 {
7117 Elf_Internal_Sym *sym;
7118
7119 for (sym = local_syms;
7120 sym < local_syms + symtab_hdr->sh_info;
7121 ++sym)
7122 if (sym->st_shndx != SHN_UNDEF
7123 && (sym->st_shndx < SHN_LORESERVE
7124 || sym->st_shndx > SHN_HIRESERVE)
7125 && sym->st_value != 0
7126 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7127 {
7128 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7129 sym->st_value -= skip[sym->st_value >> 3];
7130 else
7131 {
7132 (*_bfd_error_handler)
7133 (_("%s defined in removed toc entry"),
be8dd2ca 7134 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
c5614fa4
AM		 7135 sym->st_value = 0;
7136 sym->st_shndx = SHN_ABS;
7137 }
7138 symtab_hdr->contents = (unsigned char *) local_syms;
7139 }
7140 }
7141
7142 /* Finally, adjust any global syms defined in the toc. */
7143 if (toc_inf.global_toc_syms)
7144 {
7145 toc_inf.toc = toc;
7146 toc_inf.skip = skip;
7147 toc_inf.global_toc_syms = FALSE;
7148 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7149 &toc_inf);
7150 }
7151 }
7152
7153 if (local_syms != NULL
7154 && symtab_hdr->contents != (unsigned char *) local_syms)
7155 {
7156 if (!info->keep_memory)
7157 free (local_syms);
7158 else
7159 symtab_hdr->contents = (unsigned char *) local_syms;
7160 }
7161 free (skip);
7162 }
7163
7164 return TRUE;
7165}
7166
65f38f15
AM		 7167/* Allocate space in .plt, .got and associated reloc sections for
7168 dynamic relocs. */
5bd4f169 7169
b34976b6 7170static bfd_boolean
4ce794b7 7171allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7172{
65f38f15
AM		 7173 struct bfd_link_info *info;
7174 struct ppc_link_hash_table *htab;
5bd4f169 7175 asection *s;
65f38f15
AM		 7176 struct ppc_link_hash_entry *eh;
7177 struct ppc_dyn_relocs *p;
411e1bfb 7178 struct got_entry *gent;
5bd4f169 7179
e92d460e 7180 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7181 return TRUE;
5bd4f169 7182
e92d460e
AM		 7183 if (h->root.type == bfd_link_hash_warning)
7184 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7185
65f38f15
AM		 7186 info = (struct bfd_link_info *) inf;
7187 htab = ppc_hash_table (info);
5bd4f169 7188
65f38f15 7189 if (htab->elf.dynamic_sections_created
411e1bfb 7190 && h->dynindx != -1
9c7a29a3 7191 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7192 {
411e1bfb
AM		 7193 struct plt_entry *pent;
7194 bfd_boolean doneone = FALSE;
7195 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7196 if (pent->plt.refcount > 0)
7197 {
411e1bfb
AM		 7198 /* If this is the first .plt entry, make room for the special
7199 first entry. */
4ce794b7 7200 s = htab->plt;
eea6121a
AM		 7201 if (s->size == 0)
7202 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7203
eea6121a 7204 pent->plt.offset = s->size;
411e1bfb
AM		 7205
7206 /* Make room for this entry. */
eea6121a 7207 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7208
7209 /* Make room for the .glink code. */
4ce794b7 7210 s = htab->glink;
eea6121a
AM		 7211 if (s->size == 0)
7212 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7213 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7214 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7215 s->size += 4;
7216 s->size += 2*4;
411e1bfb
AM		 7217
7218 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7219 s = htab->relplt;
eea6121a 7220 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7221 doneone = TRUE;
7222 }
7223 else
7224 pent->plt.offset = (bfd_vma) -1;
7225 if (!doneone)
65f38f15 7226 {
411e1bfb 7227 h->plt.plist = NULL;
f5385ebf 7228 h->needs_plt = 0;
65f38f15
AM		 7229 }
7230 }
7231 else
7232 {
411e1bfb 7233 h->plt.plist = NULL;
f5385ebf 7234 h->needs_plt = 0;
65f38f15
AM		 7235 }
7236
951fd09b
AM		 7237 eh = (struct ppc_link_hash_entry *) h;
7238 /* Run through the TLS GD got entries first if we're changing them
7239 to TPREL. */
e7b938ca 7240 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7241 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7242 if (gent->got.refcount > 0
7243 && (gent->tls_type & TLS_GD) != 0)
7244 {
7245 /* This was a GD entry that has been converted to TPREL. If
7246 there happens to be a TPREL entry we can use that one. */
7247 struct got_entry *ent;
7248 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7249 if (ent->got.refcount > 0
7250 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7251 && ent->addend == gent->addend
7252 && ent->owner == gent->owner)
951fd09b
AM		 7253 {
7254 gent->got.refcount = 0;
7255 break;
7256 }
7257
7258 /* If not, then we'll be using our own TPREL entry. */
7259 if (gent->got.refcount != 0)
7260 gent->tls_type = TLS_TLS | TLS_TPREL;
7261 }
7262
411e1bfb
AM		 7263 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7264 if (gent->got.refcount > 0)
7265 {
951fd09b
AM		 7266 bfd_boolean dyn;
7267
411e1bfb 7268 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7269 Undefined weak syms won't yet be marked as dynamic,
7270 nor will all TLS symbols. */
411e1bfb 7271 if (h->dynindx == -1
f5385ebf 7272 && !h->forced_local)
411e1bfb 7273 {
c152c796 7274 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7275 return FALSE;
7276 }
65f38f15 7277
d881513a 7278 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7279 && !h->def_dynamic)
411e1bfb 7280 {
e717da7e 7281 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7282 continue;
411e1bfb 7283 }
951fd09b 7284
e717da7e 7285 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7286 gent->got.offset = s->size;
7287 s->size
d881513a 7288 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7289 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7290 if ((info->shared
7291 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7292 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7293 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7294 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7295 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7296 ? 2 * sizeof (Elf64_External_Rela)
7297 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7298 }
7299 else
7300 gent->got.offset = (bfd_vma) -1;
65f38f15 7301
65f38f15 7302 if (eh->dyn_relocs == NULL)
b34976b6 7303 return TRUE;
65f38f15
AM		 7304
7305 /* In the shared -Bsymbolic case, discard space allocated for
7306 dynamic pc-relative relocs against symbols which turn out to be
7307 defined in regular objects. For the normal shared case, discard
7308 space for relocs that have become local due to symbol visibility
7309 changes. */
7310
7311 if (info->shared)
7312 {
9c7a29a3
AM		 7313 /* Relocs that use pc_count are those that appear on a call insn,
7314 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7315 generated via assembly. We want calls to protected symbols to
7316 resolve directly to the function rather than going via the plt.
7317 If people want function pointer comparisons to work as expected
7318 then they should avoid writing weird assembly. */
09695f56 7319 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7320 {
7321 struct ppc_dyn_relocs **pp;
7322
7323 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7324 {
65f38f15
AM		 7325 p->count -= p->pc_count;
7326 p->pc_count = 0;
7327 if (p->count == 0)
7328 *pp = p->next;
7329 else
7330 pp = &p->next;
5bd4f169 7331 }
65f38f15 7332 }
4e795f50
AM		 7333
7334 /* Also discard relocs on undefined weak syms with non-default
7335 visibility. */
7336 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7337 && h->root.type == bfd_link_hash_undefweak)
7338 eh->dyn_relocs = NULL;
65f38f15 7339 }
f4656909 7340 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7341 {
7342 /* For the non-shared case, discard space for relocs against
7343 symbols which turn out to need copy relocs or are not
7344 dynamic. */
7345
f5385ebf
AM		 7346 if (!h->non_got_ref
7347 && h->def_dynamic
7348 && !h->def_regular)
65f38f15
AM		 7349 {
7350 /* Make sure this symbol is output as a dynamic symbol.
7351 Undefined weak syms won't yet be marked as dynamic. */
7352 if (h->dynindx == -1
f5385ebf 7353 && !h->forced_local)
65f38f15 7354 {
c152c796 7355 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7356 return FALSE;
65f38f15
AM		 7357 }
7358
7359 /* If that succeeded, we know we'll be keeping all the
7360 relocs. */
7361 if (h->dynindx != -1)
7362 goto keep;
7363 }
7364
7365 eh->dyn_relocs = NULL;
7366
ec338859 7367 keep: ;
65f38f15
AM		 7368 }
7369
7370 /* Finally, allocate space. */
7371 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7372 {
7373 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7374 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7375 }
7376
b34976b6 7377 return TRUE;
65f38f15
AM		 7378}
7379
7380/* Find any dynamic relocs that apply to read-only sections. */
7381
b34976b6 7382static bfd_boolean
4ce794b7 7383readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7384{
7385 struct ppc_link_hash_entry *eh;
7386 struct ppc_dyn_relocs *p;
7387
e92d460e
AM		 7388 if (h->root.type == bfd_link_hash_warning)
7389 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7390
65f38f15
AM		 7391 eh = (struct ppc_link_hash_entry *) h;
7392 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7393 {
7394 asection *s = p->sec->output_section;
7395
7396 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7397 {
4ce794b7 7398 struct bfd_link_info *info = inf;
65f38f15
AM		 7399
7400 info->flags |= DF_TEXTREL;
7401
7402 /* Not an error, just cut short the traversal. */
b34976b6 7403 return FALSE;
65f38f15
AM		 7404 }
7405 }
b34976b6 7406 return TRUE;
65f38f15
AM		 7407}
7408
7409/* Set the sizes of the dynamic sections. */
7410
b34976b6 7411static bfd_boolean
4ce794b7
AM		 7412ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7413 struct bfd_link_info *info)
65f38f15
AM		 7414{
7415 struct ppc_link_hash_table *htab;
7416 bfd *dynobj;
7417 asection *s;
b34976b6 7418 bfd_boolean relocs;
65f38f15
AM		 7419 bfd *ibfd;
7420
7421 htab = ppc_hash_table (info);
7422 dynobj = htab->elf.dynobj;
7423 if (dynobj == NULL)
7424 abort ();
7425
7426 if (htab->elf.dynamic_sections_created)
7427 {
7428 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7429 if (info->executable)
65f38f15
AM		 7430 {
7431 s = bfd_get_section_by_name (dynobj, ".interp");
7432 if (s == NULL)
7433 abort ();
eea6121a 7434 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7435 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7436 }
7437 }
7438
7439 /* Set up .got offsets for local syms, and space for local dynamic
7440 relocs. */
7441 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7442 {
411e1bfb
AM		 7443 struct got_entry **lgot_ents;
7444 struct got_entry **end_lgot_ents;
e7b938ca 7445 char *lgot_masks;
65f38f15
AM		 7446 bfd_size_type locsymcount;
7447 Elf_Internal_Shdr *symtab_hdr;
7448 asection *srel;
7449
ee75fd95 7450 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7451 continue;
7452
e717da7e
AM		 7453 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7454 {
7455 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7456 ppc64_tlsld_got (ibfd)->offset = s->size;
7457 s->size += 16;
e717da7e
AM		 7458 if (info->shared)
7459 {
7460 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7461 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7462 }
7463 }
7464 else
7465 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7466
65f38f15
AM		 7467 for (s = ibfd->sections; s != NULL; s = s->next)
7468 {
ec338859 7469 struct ppc_dyn_relocs *p;
65f38f15 7470
ec338859
AM		 7471 for (p = *((struct ppc_dyn_relocs **)
7472 &elf_section_data (s)->local_dynrel);
7473 p != NULL;
7474 p = p->next)
65f38f15 7475 {
ec338859
AM		 7476 if (!bfd_is_abs_section (p->sec)
7477 && bfd_is_abs_section (p->sec->output_section))
7478 {
7479 /* Input section has been discarded, either because
7480 it is a copy of a linkonce section or due to
7481 linker script /DISCARD/, so we'll be discarding
7482 the relocs too. */
7483 }
248866a8 7484 else if (p->count != 0)
ec338859
AM		 7485 {
7486 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7487 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7488 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7489 info->flags |= DF_TEXTREL;
ec338859 7490 }
65f38f15
AM		 7491 }
7492 }
7493
411e1bfb
AM		 7494 lgot_ents = elf_local_got_ents (ibfd);
7495 if (!lgot_ents)
65f38f15
AM		 7496 continue;
7497
7498 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7499 locsymcount = symtab_hdr->sh_info;
411e1bfb 7500 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7501 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7502 s = ppc64_elf_tdata (ibfd)->got;
7503 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7504 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7505 {
411e1bfb
AM		 7506 struct got_entry *ent;
7507
7508 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7509 if (ent->got.refcount > 0)
7510 {
e7b938ca 7511 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7512 {
e717da7e 7513 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7514 {
eea6121a
AM		 7515 ppc64_tlsld_got (ibfd)->offset = s->size;
7516 s->size += 16;
411e1bfb 7517 if (info->shared)
eea6121a 7518 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7519 }
e717da7e 7520 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7521 }
7522 else
7523 {
eea6121a 7524 ent->got.offset = s->size;
e7b938ca 7525 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7526 {
eea6121a 7527 s->size += 16;
411e1bfb 7528 if (info->shared)
eea6121a 7529 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7530 }
7531 else
7532 {
eea6121a 7533 s->size += 8;
411e1bfb 7534 if (info->shared)
eea6121a 7535 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7536 }
7537 }
7538 }
7539 else
7540 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7541 }
7542 }
7543
7544 /* Allocate global sym .plt and .got entries, and space for global
7545 sym dynamic relocs. */
4ce794b7 7546 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7547
7548 /* We now have determined the sizes of the various dynamic sections.
7549 Allocate memory for them. */
b34976b6 7550 relocs = FALSE;
65f38f15
AM		 7551 for (s = dynobj->sections; s != NULL; s = s->next)
7552 {
7553 if ((s->flags & SEC_LINKER_CREATED) == 0)
7554 continue;
7555
4ce794b7 7556 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7557 /* These haven't been allocated yet; don't strip. */
7558 continue;
e717da7e
AM		 7559 else if (s == htab->got
7560 || s == htab->plt
4ce794b7 7561 || s == htab->glink)
65f38f15
AM		 7562 {
7563 /* Strip this section if we don't need it; see the
7564 comment below. */
5bd4f169 7565 }
65f38f15 7566 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7567 {
eea6121a 7568 if (s->size == 0)
5bd4f169
AM		 7569 {
7570 /* If we don't need this section, strip it from the
7571 output file. This is mostly to handle .rela.bss and
7572 .rela.plt. We must create both sections in
7573 create_dynamic_sections, because they must be created
7574 before the linker maps input sections to output
7575 sections. The linker does that before
7576 adjust_dynamic_symbol is called, and it is that
7577 function which decides whether anything needs to go
7578 into these sections. */
5bd4f169
AM		 7579 }
7580 else
7581 {
4ce794b7 7582 if (s != htab->relplt)
b34976b6 7583 relocs = TRUE;
5bd4f169
AM		 7584
7585 /* We use the reloc_count field as a counter if we need
7586 to copy relocs into the output file. */
7587 s->reloc_count = 0;
7588 }
7589 }
65f38f15 7590 else
5bd4f169
AM		 7591 {
7592 /* It's not one of our sections, so don't allocate space. */
7593 continue;
7594 }
7595
eea6121a 7596 if (s->size == 0)
5bd4f169
AM		 7597 {
7598 _bfd_strip_section_from_output (info, s);
7599 continue;
7600 }
7601
5f333394 7602 /* .plt is in the bss section. We don't initialise it. */
680a3378 7603 if (s == htab->plt)
5f333394
AM		 7604 continue;
7605
65f38f15
AM		 7606 /* Allocate memory for the section contents. We use bfd_zalloc
7607 here in case unused entries are not reclaimed before the
7608 section's contents are written out. This should not happen,
411e1bfb
AM		 7609 but this way if it does we get a R_PPC64_NONE reloc in .rela
7610 sections instead of garbage.
7611 We also rely on the section contents being zero when writing
7612 the GOT. */
eea6121a 7613 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7614 if (s->contents == NULL)
b34976b6 7615 return FALSE;
5bd4f169
AM		 7616 }
7617
e717da7e
AM		 7618 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7619 {
ee75fd95 7620 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7621 continue;
7622
e717da7e
AM		 7623 s = ppc64_elf_tdata (ibfd)->got;
7624 if (s != NULL && s != htab->got)
7625 {
eea6121a 7626 if (s->size == 0)
e717da7e
AM		 7627 _bfd_strip_section_from_output (info, s);
7628 else
7629 {
eea6121a 7630 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7631 if (s->contents == NULL)
7632 return FALSE;
7633 }
7634 }
7635 s = ppc64_elf_tdata (ibfd)->relgot;
7636 if (s != NULL)
7637 {
eea6121a 7638 if (s->size == 0)
e717da7e
AM		 7639 _bfd_strip_section_from_output (info, s);
7640 else
7641 {
eea6121a 7642 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7643 if (s->contents == NULL)
7644 return FALSE;
7645 relocs = TRUE;
7646 s->reloc_count = 0;
7647 }
7648 }
7649 }
7650
e86ce104 7651 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7652 {
7653 /* Add some entries to the .dynamic section. We fill in the
7654 values later, in ppc64_elf_finish_dynamic_sections, but we
7655 must add the entries now so that we get the correct size for
7656 the .dynamic section. The DT_DEBUG entry is filled in by the
7657 dynamic linker and used by the debugger. */
dc810e39 7658#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7659 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7660
36af4a4e 7661 if (info->executable)
5bd4f169 7662 {
dc810e39 7663 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7664 return FALSE;
5bd4f169
AM		 7665 }
7666
eea6121a 7667 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7668 {
dc810e39
AM		 7669 if (!add_dynamic_entry (DT_PLTGOT, 0)
7670 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7671 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7672 || !add_dynamic_entry (DT_JMPREL, 0)
7673 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7674 return FALSE;
5bd4f169
AM		 7675 }
7676
19397422
AM		 7677 if (NO_OPD_RELOCS)
7678 {
7679 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7680 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7681 return FALSE;
19397422
AM		 7682 }
7683
5bd4f169
AM		 7684 if (relocs)
7685 {
dc810e39
AM		 7686 if (!add_dynamic_entry (DT_RELA, 0)
7687 || !add_dynamic_entry (DT_RELASZ, 0)
7688 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7689 return FALSE;
5bd4f169 7690
65f38f15
AM		 7691 /* If any dynamic relocs apply to a read-only section,
7692 then we need a DT_TEXTREL entry. */
248866a8 7693 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7694 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7695
65f38f15 7696 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7697 {
65f38f15 7698 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7699 return FALSE;
5bd4f169 7700 }
5bd4f169 7701 }
5bd4f169 7702 }
65f38f15 7703#undef add_dynamic_entry
5bd4f169 7704
b34976b6 7705 return TRUE;
5bd4f169
AM		 7706}
7707
721956f4 7708/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7709
4ce794b7
AM		 7710static inline enum ppc_stub_type
7711ppc_type_of_stub (asection *input_sec,
7712 const Elf_Internal_Rela *rel,
7713 struct ppc_link_hash_entry **hash,
7714 bfd_vma destination)
5bd4f169 7715{
721956f4
AM		 7716 struct ppc_link_hash_entry *h = *hash;
7717 bfd_vma location;
7718 bfd_vma branch_offset;
7719 bfd_vma max_branch_offset;
4ce794b7 7720 enum elf_ppc64_reloc_type r_type;
5bd4f169 7721
721956f4
AM		 7722 if (h != NULL)
7723 {
7724 if (h->oh != NULL
8387904d
AM		 7725 && h->oh->is_func_descriptor)
7726 h = h->oh;
7727
7728 if (h->elf.dynindx != -1)
5bd4f169 7729 {
411e1bfb 7730 struct plt_entry *ent;
8387904d
AM		 7731
7732 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7733 if (ent->addend == rel->r_addend
7734 && ent->plt.offset != (bfd_vma) -1)
7735 {
8387904d 7736 *hash = h;
411e1bfb
AM		 7737 return ppc_stub_plt_call;
7738 }
5bd4f169
AM		 7739 }
7740
ee7de3e6
AM		 7741 if (!(h->elf.root.type == bfd_link_hash_defined
7742 || h->elf.root.type == bfd_link_hash_defweak)
7743 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7744 return ppc_stub_none;
5d1634d7 7745 }
5d1634d7 7746
721956f4
AM		 7747 /* Determine where the call point is. */
7748 location = (input_sec->output_offset
7749 + input_sec->output_section->vma
7750 + rel->r_offset);
5d1634d7 7751
721956f4
AM		 7752 branch_offset = destination - location;
7753 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7754
721956f4
AM		 7755 /* Determine if a long branch stub is needed. */
7756 max_branch_offset = 1 << 25;
4ce794b7 7757 if (r_type != R_PPC64_REL24)
721956f4 7758 max_branch_offset = 1 << 15;
5d1634d7 7759
721956f4
AM		 7760 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7761 /* We need a stub. Figure out whether a long_branch or plt_branch
7762 is needed later. */
7763 return ppc_stub_long_branch;
5d1634d7 7764
721956f4 7765 return ppc_stub_none;
5d1634d7
AM		 7766}
7767
7768/* Build a .plt call stub. */
7769
4ce794b7
AM		 7770static inline bfd_byte *
7771build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7772{
7773#define PPC_LO(v) ((v) & 0xffff)
7774#define PPC_HI(v) (((v) >> 16) & 0xffff)
7775#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7776
5d1634d7 7777 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7778 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7779 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7780 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7781 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7782 offset += 8;
7783 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7784 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7785 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7786 offset += 8;
7787 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7788 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7789 bfd_put_32 (obfd, BCTR, p), p += 4;
7790 return p;
7791}
7792
b34976b6 7793static bfd_boolean
4ce794b7 7794ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7795{
721956f4
AM		 7796 struct ppc_stub_hash_entry *stub_entry;
7797 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7798 struct bfd_link_info *info;
7799 struct ppc_link_hash_table *htab;
721956f4
AM		 7800 bfd_byte *loc;
7801 bfd_byte *p;
7802 unsigned int indx;
411e1bfb 7803 struct plt_entry *ent;
ee75fd95 7804 bfd_vma dest, off;
721956f4 7805 int size;
5d1634d7 7806
721956f4
AM		 7807 /* Massage our args to the form they really have. */
7808 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7809 info = in_arg;
5d1634d7 7810
5d1634d7
AM		 7811 htab = ppc_hash_table (info);
7812
721956f4 7813 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7814 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7815 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7816
4ce794b7 7817 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7818 switch (stub_entry->stub_type)
5d1634d7 7819 {
721956f4 7820 case ppc_stub_long_branch:
ad8e1ba5 7821 case ppc_stub_long_branch_r2off:
721956f4 7822 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7823 off = dest = (stub_entry->target_value
7824 + stub_entry->target_section->output_offset
7825 + stub_entry->target_section->output_section->vma);
5d1634d7 7826
721956f4
AM		 7827 /* And this is where we are coming from. */
7828 off -= (stub_entry->stub_offset
97b639ba
AM		 7829 + stub_entry->stub_sec->output_offset
7830 + stub_entry->stub_sec->output_section->vma);
e86ce104 7831
ad8e1ba5
AM		 7832 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7833 size = 4;
7834 else
7835 {
7836 bfd_vma r2off;
7837
7838 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7839 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7840 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7841 loc += 4;
97b639ba 7842 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7843 loc += 4;
97b639ba 7844 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7845 loc += 4;
7846 off -= 12;
7847 size = 16;
7848 }
97b639ba 7849 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 7850
7851 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 7852
7853 if (info->emitrelocations)
7854 {
7855 Elf_Internal_Rela *relocs, *r;
7856 struct bfd_elf_section_data *elfsec_data;
7857
7858 elfsec_data = elf_section_data (stub_entry->stub_sec);
7859 relocs = elfsec_data->relocs;
7860 if (relocs == NULL)
7861 {
7862 bfd_size_type relsize;
7863 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7864 relocs = bfd_alloc (htab->stub_bfd, relsize);
7865 if (relocs == NULL)
7866 return FALSE;
7867 elfsec_data->relocs = relocs;
7868 elfsec_data->rel_hdr.sh_size = relsize;
7869 elfsec_data->rel_hdr.sh_entsize = 24;
7870 stub_entry->stub_sec->reloc_count = 0;
7871 }
7872 r = relocs + stub_entry->stub_sec->reloc_count;
7873 stub_entry->stub_sec->reloc_count += 1;
7874 r->r_offset = loc - stub_entry->stub_sec->contents;
7875 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7876 r->r_addend = dest;
7877 if (stub_entry->h != NULL)
7878 {
7879 struct elf_link_hash_entry **hashes;
7880 unsigned long symndx;
7881 struct ppc_link_hash_entry *h;
7882
7883 hashes = elf_sym_hashes (htab->stub_bfd);
7884 if (hashes == NULL)
7885 {
7886 bfd_size_type hsize;
7887
7888 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7889 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7890 if (hashes == NULL)
7891 return FALSE;
7892 elf_sym_hashes (htab->stub_bfd) = hashes;
7893 htab->stub_globals = 1;
7894 }
7895 symndx = htab->stub_globals++;
7896 h = stub_entry->h;
7897 hashes[symndx] = &h->elf;
7898 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7899 if (h->oh != NULL && h->oh->is_func)
7900 h = h->oh;
7901 if (h->elf.root.u.def.section != stub_entry->target_section)
7902 /* H is an opd symbol. The addend must be zero. */
7903 r->r_addend = 0;
7904 else
7905 {
7906 off = (h->elf.root.u.def.value
7907 + h->elf.root.u.def.section->output_offset
7908 + h->elf.root.u.def.section->output_section->vma);
7909 r->r_addend -= off;
7910 }
7911 }
7912 }
721956f4 7913 break;
e86ce104 7914
721956f4 7915 case ppc_stub_plt_branch:
ad8e1ba5 7916 case ppc_stub_plt_branch_r2off:
721956f4
AM		 7917 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7918 stub_entry->root.string + 9,
b34976b6 7919 FALSE, FALSE);
721956f4
AM		 7920 if (br_entry == NULL)
7921 {
7922 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7923 stub_entry->root.string + 9);
b34976b6
AM		 7924 htab->stub_error = TRUE;
7925 return FALSE;
721956f4
AM		 7926 }
7927
7928 off = (stub_entry->target_value
7929 + stub_entry->target_section->output_offset
7930 + stub_entry->target_section->output_section->vma);
7931
4ce794b7
AM		 7932 bfd_put_64 (htab->brlt->owner, off,
7933 htab->brlt->contents + br_entry->offset);
721956f4 7934
ee75fd95 7935 if (htab->relbrlt != NULL)
721956f4
AM		 7936 {
7937 /* Create a reloc for the branch lookup table entry. */
7938 Elf_Internal_Rela rela;
ad8e1ba5 7939 bfd_byte *rl;
5d1634d7 7940
721956f4 7941 rela.r_offset = (br_entry->offset
4ce794b7
AM		 7942 + htab->brlt->output_offset
7943 + htab->brlt->output_section->vma);
721956f4
AM		 7944 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7945 rela.r_addend = off;
7946
4ce794b7
AM		 7947 rl = htab->relbrlt->contents;
7948 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7949 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 7950 }
7951
7952 off = (br_entry->offset
4ce794b7
AM		 7953 + htab->brlt->output_offset
7954 + htab->brlt->output_section->vma
7955 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 7956 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 7957
ad8e1ba5 7958 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 7959 {
7960 (*_bfd_error_handler)
e86ce104 7961 (_("linkage table error against `%s'"),
721956f4 7962 stub_entry->root.string);
5d1634d7 7963 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 7964 htab->stub_error = TRUE;
7965 return FALSE;
5d1634d7 7966 }
41bd81ab 7967
721956f4 7968 indx = off;
ad8e1ba5
AM		 7969 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7970 {
97b639ba 7971 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 7972 loc += 4;
97b639ba 7973 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 7974 size = 16;
7975 }
7976 else
7977 {
7978 bfd_vma r2off;
7979
7980 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7981 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7982 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7983 loc += 4;
97b639ba 7984 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 7985 loc += 4;
97b639ba 7986 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 7987 loc += 4;
97b639ba 7988 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7989 loc += 4;
97b639ba 7990 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7991 size = 28;
7992 }
7993 loc += 4;
97b639ba 7994 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 7995 loc += 4;
97b639ba 7996 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 7997 break;
5d1634d7 7998
721956f4 7999 case ppc_stub_plt_call:
c862ae31
AM		 8000 /* Do the best we can for shared libraries built without
8001 exporting ".foo" for each "foo". This can happen when symbol
8002 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8003 if (stub_entry->h->oh != NULL
8004 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8005 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8006 {
8007 /* Point the symbol at the stub. There may be multiple stubs,
8008 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8009 defined somewhere. Maybe defining the symbol in the stub
8010 section is a silly idea. If we didn't do this, htab->top_id
8011 could disappear. */
34814b9f
AM		 8012 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8013 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8014 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8015 }
8016
721956f4 8017 /* Now build the stub. */
411e1bfb
AM		 8018 off = (bfd_vma) -1;
8019 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8020 if (ent->addend == stub_entry->addend)
8021 {
8022 off = ent->plt.offset;
8023 break;
8024 }
721956f4
AM		 8025 if (off >= (bfd_vma) -2)
8026 abort ();
8027
8028 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8029 off += (htab->plt->output_offset
8030 + htab->plt->output_section->vma
8031 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8032 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8033
ad8e1ba5 8034 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8035 {
8036 (*_bfd_error_handler)
8037 (_("linkage table error against `%s'"),
8038 stub_entry->h->elf.root.root.string);
8039 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8040 htab->stub_error = TRUE;
8041 return FALSE;
721956f4
AM		 8042 }
8043
97b639ba 8044 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8045 size = p - loc;
8046 break;
8047
8048 default:
8049 BFD_FAIL ();
b34976b6 8050 return FALSE;
721956f4
AM		 8051 }
8052
eea6121a 8053 stub_entry->stub_sec->size += size;
97b639ba 8054
ee75fd95 8055 if (htab->emit_stub_syms)
97b639ba
AM		 8056 {
8057 struct elf_link_hash_entry *h;
ee75fd95
AM		 8058 size_t len1, len2;
8059 char *name;
8060 const char *const stub_str[] = { "long_branch",
8061 "long_branch_r2off",
8062 "plt_branch",
8063 "plt_branch_r2off",
8064 "plt_call" };
8065
8066 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8067 len2 = strlen (stub_entry->root.string);
8068 name = bfd_malloc (len1 + len2 + 2);
8069 if (name == NULL)
8070 return FALSE;
8071 memcpy (name, stub_entry->root.string, 9);
8072 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8073 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8074 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8075 if (h == NULL)
8076 return FALSE;
8077 if (h->root.type == bfd_link_hash_new)
8078 {
8079 h->root.type = bfd_link_hash_defined;
8080 h->root.u.def.section = stub_entry->stub_sec;
8081 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8082 h->ref_regular = 1;
8083 h->def_regular = 1;
8084 h->ref_regular_nonweak = 1;
8085 h->forced_local = 1;
8086 h->non_elf = 0;
97b639ba
AM		 8087 }
8088 }
8089
b34976b6 8090 return TRUE;
721956f4
AM		 8091}
8092
8093/* As above, but don't actually build the stub. Just bump offset so
8094 we know stub section sizes, and select plt_branch stubs where
8095 long_branch stubs won't do. */
8096
b34976b6 8097static bfd_boolean
4ce794b7 8098ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8099{
8100 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8101 struct bfd_link_info *info;
721956f4
AM		 8102 struct ppc_link_hash_table *htab;
8103 bfd_vma off;
8104 int size;
8105
8106 /* Massage our args to the form they really have. */
8107 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8108 info = in_arg;
8109
8110 htab = ppc_hash_table (info);
721956f4
AM		 8111
8112 if (stub_entry->stub_type == ppc_stub_plt_call)
8113 {
411e1bfb 8114 struct plt_entry *ent;
58ac9f71 8115 off = (bfd_vma) -1;
411e1bfb
AM		 8116 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8117 if (ent->addend == stub_entry->addend)
8118 {
8119 off = ent->plt.offset & ~(bfd_vma) 1;
8120 break;
8121 }
58ac9f71 8122 if (off >= (bfd_vma) -2)
411e1bfb 8123 abort ();
4ce794b7
AM		 8124 off += (htab->plt->output_offset
8125 + htab->plt->output_section->vma
8126 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8127 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8128
ad8e1ba5 8129 size = PLT_CALL_STUB_SIZE;
4ce794b7 8130 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8131 size += 4;
8132 }
8133 else
8134 {
ad8e1ba5
AM		 8135 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8136 variants. */
721956f4
AM		 8137 off = (stub_entry->target_value
8138 + stub_entry->target_section->output_offset
8139 + stub_entry->target_section->output_section->vma);
eea6121a 8140 off -= (stub_entry->stub_sec->size
721956f4
AM		 8141 + stub_entry->stub_sec->output_offset
8142 + stub_entry->stub_sec->output_section->vma);
8143
ad8e1ba5
AM		 8144 /* Reset the stub type from the plt variant in case we now
8145 can reach with a shorter stub. */
8146 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8147 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8148
8149 size = 4;
8150 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8151 {
8152 off -= 12;
8153 size = 16;
8154 }
8155
8156 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8157 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8158 {
8159 struct ppc_branch_hash_entry *br_entry;
8160
8161 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8162 stub_entry->root.string + 9,
b34976b6 8163 TRUE, FALSE);
721956f4
AM		 8164 if (br_entry == NULL)
8165 {
8166 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8167 stub_entry->root.string + 9);
b34976b6
AM		 8168 htab->stub_error = TRUE;
8169 return FALSE;
721956f4
AM		 8170 }
8171
8172 if (br_entry->iter != htab->stub_iteration)
8173 {
8174 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8175 br_entry->offset = htab->brlt->size;
8176 htab->brlt->size += 8;
63bc6f6c 8177
ee75fd95 8178 if (htab->relbrlt != NULL)
eea6121a 8179 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8180 }
ad8e1ba5
AM		 8181
8182 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8183 size = 16;
ad8e1ba5
AM		 8184 if (stub_entry->stub_type != ppc_stub_plt_branch)
8185 size = 28;
721956f4 8186 }
ee75fd95
AM		 8187
8188 if (info->emitrelocations
8189 && (stub_entry->stub_type == ppc_stub_long_branch
8190 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8191 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8192 }
8193
eea6121a 8194 stub_entry->stub_sec->size += size;
b34976b6 8195 return TRUE;
721956f4
AM		 8196}
8197
8198/* Set up various things so that we can make a list of input sections
8199 for each output section included in the link. Returns -1 on error,
cedb70c5 8200 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8201
8202int
4c52953f
AM		 8203ppc64_elf_setup_section_lists (bfd *output_bfd,
8204 struct bfd_link_info *info,
8205 int no_multi_toc)
721956f4
AM		 8206{
8207 bfd *input_bfd;
734b6cf9 8208 int top_id, top_index, id;
721956f4 8209 asection *section;
734b6cf9 8210 asection **input_list;
721956f4
AM		 8211 bfd_size_type amt;
8212 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8213
4c52953f
AM		 8214 htab->no_multi_toc = no_multi_toc;
8215
4ce794b7 8216 if (htab->brlt == NULL)
721956f4
AM		 8217 return 0;
8218
1e2f5b6e 8219 /* Find the top input section id. */
3d6f9012 8220 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8221 input_bfd != NULL;
8222 input_bfd = input_bfd->link_next)
8223 {
721956f4
AM		 8224 for (section = input_bfd->sections;
8225 section != NULL;
8226 section = section->next)
8227 {
8228 if (top_id < section->id)
8229 top_id = section->id;
8230 }
8231 }
721956f4 8232
8f3bab57 8233 htab->top_id = top_id;
721956f4 8234 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8235 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8236 if (htab->stub_group == NULL)
8237 return -1;
8238
3d6f9012
AM		 8239 /* Set toc_off for com, und, abs and ind sections. */
8240 for (id = 0; id < 3; id++)
8241 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8242
3d6f9012 8243 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8244
8245 /* We can't use output_bfd->section_count here to find the top output
8246 section index as some sections may have been removed, and
8247 _bfd_strip_section_from_output doesn't renumber the indices. */
8248 for (section = output_bfd->sections, top_index = 0;
8249 section != NULL;
8250 section = section->next)
8251 {
8252 if (top_index < section->index)
8253 top_index = section->index;
8254 }
8255
8256 htab->top_index = top_index;
8257 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8258 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8259 htab->input_list = input_list;
8260 if (input_list == NULL)
8261 return -1;
8262
721956f4
AM		 8263 return 1;
8264}
8265
e717da7e
AM		 8266/* The linker repeatedly calls this function for each TOC input section
8267 and linker generated GOT section. Group input bfds such that the toc
8268 within a group is less than 64k in size. Will break with cute linker
8269 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8270
8271void
4ce794b7 8272ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8273{
8274 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8275
4c52953f
AM		 8276 if (!htab->no_multi_toc)
8277 {
8278 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8279 bfd_vma off = addr - htab->toc_curr;
8280
8281 if (off + isec->size > 0x10000)
8282 htab->toc_curr = addr;
99877b66 8283
4c52953f
AM		 8284 elf_gp (isec->owner) = (htab->toc_curr
8285 - elf_gp (isec->output_section->owner)
8286 + TOC_BASE_OFF);
8287 }
ad8e1ba5
AM		 8288}
8289
8290/* Called after the last call to the above function. */
8291
8292void
4c52953f 8293ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8294{
8295 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8296
4c52953f
AM		 8297 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8298
ad8e1ba5
AM		 8299 /* toc_curr tracks the TOC offset used for code sections below in
8300 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8301 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8302}
8303
9b5ecbd0
AM		 8304/* No toc references were found in ISEC. If the code in ISEC makes no
8305 calls, then there's no need to use toc adjusting stubs when branching
8306 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8307 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8308 needed, and 2 if a cyclical call-graph was found but no other reason
8309 for a stub was detected. If called from the top level, a return of
8310 2 means the same as a return of 0. */
9b5ecbd0
AM		 8311
8312static int
4ce794b7 8313toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8314{
4c52953f
AM		 8315 Elf_Internal_Rela *relstart, *rel;
8316 Elf_Internal_Sym *local_syms;
9b5ecbd0 8317 int ret;
4c52953f 8318 struct ppc_link_hash_table *htab;
9b5ecbd0 8319
772119ce
AM		 8320 /* We know none of our code bearing sections will need toc stubs. */
8321 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8322 return 0;
8323
eea6121a 8324 if (isec->size == 0)
082c50f8
AM		 8325 return 0;
8326
4c52953f
AM		 8327 if (isec->output_section == NULL)
8328 return 0;
8329
9b5ecbd0
AM		 8330 /* Hack for linux kernel. .fixup contains branches, but only back to
8331 the function that hit an exception. */
4c52953f
AM		 8332 if (strcmp (isec->name, ".fixup") == 0)
8333 return 0;
9b5ecbd0 8334
4c52953f
AM		 8335 if (isec->reloc_count == 0)
8336 return 0;
8337
8338 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8339 info->keep_memory);
8340 if (relstart == NULL)
8341 return -1;
8342
8343 /* Look for branches to outside of this section. */
8344 local_syms = NULL;
8345 ret = 0;
8346 htab = ppc_hash_table (info);
8347 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8348 {
4c52953f
AM		 8349 enum elf_ppc64_reloc_type r_type;
8350 unsigned long r_symndx;
8351 struct elf_link_hash_entry *h;
8352 Elf_Internal_Sym *sym;
8353 asection *sym_sec;
8354 long *opd_adjust;
8355 bfd_vma sym_value;
8356 bfd_vma dest;
8357
8358 r_type = ELF64_R_TYPE (rel->r_info);
8359 if (r_type != R_PPC64_REL24
8360 && r_type != R_PPC64_REL14
8361 && r_type != R_PPC64_REL14_BRTAKEN
8362 && r_type != R_PPC64_REL14_BRNTAKEN)
8363 continue;
8364
8365 r_symndx = ELF64_R_SYM (rel->r_info);
8366 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8367 isec->owner))
9b5ecbd0 8368 {
4c52953f
AM		 8369 ret = -1;
8370 break;
9b5ecbd0 8371 }
9b5ecbd0 8372
2917689a
AM		 8373 /* Calls to dynamic lib functions go through a plt call stub
8374 that uses r2. Branches to undefined symbols might be a call
8375 using old-style dot symbols that can be satisfied by a plt
8376 call into a new-style dynamic library. */
4c52953f 8377 if (sym_sec == NULL)
2917689a
AM		 8378 {
8379 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8380 if (eh != NULL
8381 && eh->oh != NULL
8382 && eh->oh->elf.plt.plist != NULL)
8383 {
8384 ret = 1;
8385 break;
8386 }
4c52953f 8387
2917689a
AM		 8388 /* Ignore other undefined symbols. */
8389 continue;
8390 }
8391
8392 /* Assume branches to other sections not included in the link need
8393 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8394 if (sym_sec->output_section == NULL)
8395 {
8396 ret = 1;
8397 break;
8398 }
8399
8400 if (h == NULL)
8401 sym_value = sym->st_value;
8402 else
8403 {
8404 if (h->root.type != bfd_link_hash_defined
8405 && h->root.type != bfd_link_hash_defweak)
8406 abort ();
8407 sym_value = h->root.u.def.value;
8408 }
8409 sym_value += rel->r_addend;
8410
8411 /* If this branch reloc uses an opd sym, find the code section. */
8412 opd_adjust = get_opd_info (sym_sec);
8413 if (opd_adjust != NULL)
8414 {
4c52953f
AM		 8415 if (h == NULL)
8416 {
8417 long adjust;
8418
8419 adjust = opd_adjust[sym->st_value / 8];
8420 if (adjust == -1)
8421 /* Assume deleted functions won't ever be called. */
8422 continue;
8423 sym_value += adjust;
8424 }
8425
8426 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8427 if (dest == (bfd_vma) -1)
8428 continue;
8429 }
8430 else
8431 dest = (sym_value
8432 + sym_sec->output_offset
8433 + sym_sec->output_section->vma);
8434
8435 /* Ignore branch to self. */
8436 if (sym_sec == isec)
8437 continue;
8438
8439 /* If the called function uses the toc, we need a stub. */
8440 if (sym_sec->has_toc_reloc
8441 || sym_sec->makes_toc_func_call)
8442 {
8443 ret = 1;
8444 break;
8445 }
8446
8447 /* Assume any branch that needs a long branch stub might in fact
8448 need a plt_branch stub. A plt_branch stub uses r2. */
8449 else if (dest - (isec->output_offset
8450 + isec->output_section->vma
8451 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8452 {
8453 ret = 1;
8454 break;
8455 }
4c52953f
AM		 8456
8457 /* If calling back to a section in the process of being tested, we
8458 can't say for sure that no toc adjusting stubs are needed, so
8459 don't return zero. */
8460 else if (sym_sec->call_check_in_progress)
8461 ret = 2;
8462
8463 /* Branches to another section that itself doesn't have any TOC
8464 references are OK. Recursively call ourselves to check. */
8465 else if (sym_sec->id <= htab->top_id
8466 && htab->stub_group[sym_sec->id].toc_off == 0)
8467 {
8468 int recur;
8469
8470 /* Mark current section as indeterminate, so that other
8471 sections that call back to current won't be marked as
8472 known. */
8473 isec->call_check_in_progress = 1;
8474 recur = toc_adjusting_stub_needed (info, sym_sec);
8475 isec->call_check_in_progress = 0;
8476
8477 if (recur < 0)
8478 {
8479 /* An error. Exit. */
8480 ret = -1;
8481 break;
8482 }
8483 else if (recur <= 1)
8484 {
8485 /* Known result. Mark as checked and set section flag. */
8486 htab->stub_group[sym_sec->id].toc_off = 1;
8487 if (recur != 0)
8488 {
8489 sym_sec->makes_toc_func_call = 1;
8490 ret = 1;
8491 break;
8492 }
8493 }
8494 else
8495 {
8496 /* Unknown result. Continue checking. */
8497 ret = 2;
8498 }
8499 }
9b5ecbd0
AM		 8500 }
8501
4c52953f
AM		 8502 if (local_syms != NULL
8503 && (elf_tdata (isec->owner)->symtab_hdr.contents
8504 != (unsigned char *) local_syms))
8505 free (local_syms);
8506 if (elf_section_data (isec)->relocs != relstart)
8507 free (relstart);
8508
9b5ecbd0
AM		 8509 return ret;
8510}
8511
721956f4
AM		 8512/* The linker repeatedly calls this function for each input section,
8513 in the order that input sections are linked into output sections.
8514 Build lists of input sections to determine groupings between which
8515 we may insert linker stubs. */
8516
9b5ecbd0 8517bfd_boolean
4ce794b7 8518ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8519{
8520 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8521
734b6cf9
AM		 8522 if ((isec->output_section->flags & SEC_CODE) != 0
8523 && isec->output_section->index <= htab->top_index)
721956f4 8524 {
734b6cf9 8525 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8526 /* Steal the link_sec pointer for our list. */
721956f4 8527#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8528 /* This happens to make the list in reverse order,
8529 which is what we want. */
734b6cf9
AM		 8530 PREV_SEC (isec) = *list;
8531 *list = isec;
721956f4 8532 }
ad8e1ba5 8533
4c52953f 8534 if (htab->multi_toc_needed)
9b5ecbd0 8535 {
4c52953f
AM		 8536 /* If a code section has a function that uses the TOC then we need
8537 to use the right TOC (obviously). Also, make sure that .opd gets
8538 the correct TOC value for R_PPC64_TOC relocs that don't have or
8539 can't find their function symbol (shouldn't ever happen now). */
8540 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8541 {
8542 if (elf_gp (isec->owner) != 0)
8543 htab->toc_curr = elf_gp (isec->owner);
8544 }
8545 else if (htab->stub_group[isec->id].toc_off == 0)
8546 {
8547 int ret = toc_adjusting_stub_needed (info, isec);
8548 if (ret < 0)
8549 return FALSE;
8550 else
8551 isec->makes_toc_func_call = ret & 1;
8552 }
9b5ecbd0 8553 }
ad8e1ba5
AM		 8554
8555 /* Functions that don't use the TOC can belong in any TOC group.
8556 Use the last TOC base. This happens to make _init and _fini
8557 pasting work. */
8558 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8559 return TRUE;
721956f4
AM		 8560}
8561
8562/* See whether we can group stub sections together. Grouping stub
8563 sections may result in fewer stubs. More importantly, we need to
8564 put all .init* and .fini* stubs at the beginning of the .init or
8565 .fini output sections respectively, because glibc splits the
8566 _init and _fini functions into multiple parts. Putting a stub in
8567 the middle of a function is not a good idea. */
8568
8569static void
4ce794b7
AM		 8570group_sections (struct ppc_link_hash_table *htab,
8571 bfd_size_type stub_group_size,
8572 bfd_boolean stubs_always_before_branch)
721956f4 8573{
734b6cf9
AM		 8574 asection **list = htab->input_list + htab->top_index;
8575 do
721956f4 8576 {
734b6cf9
AM		 8577 asection *tail = *list;
8578 while (tail != NULL)
721956f4 8579 {
734b6cf9
AM		 8580 asection *curr;
8581 asection *prev;
8582 bfd_size_type total;
8583 bfd_boolean big_sec;
8584 bfd_vma curr_toc;
8585
8586 curr = tail;
eea6121a 8587 total = tail->size;
734b6cf9
AM		 8588 big_sec = total >= stub_group_size;
8589 curr_toc = htab->stub_group[tail->id].toc_off;
8590
8591 while ((prev = PREV_SEC (curr)) != NULL
8592 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8593 < stub_group_size)
8594 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8595 curr = prev;
8596
8597 /* OK, the size from the start of CURR to the end is less
8598 than stub_group_size and thus can be handled by one stub
8599 section. (or the tail section is itself larger than
8600 stub_group_size, in which case we may be toast.) We
8601 should really be keeping track of the total size of stubs
8602 added here, as stubs contribute to the final output
8603 section size. That's a little tricky, and this way will
8604 only break if stubs added make the total size more than
8605 2^25, ie. for the default stub_group_size, if stubs total
8606 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8607 do
721956f4
AM		 8608 {
8609 prev = PREV_SEC (tail);
734b6cf9 8610 /* Set up this stub group. */
721956f4
AM		 8611 htab->stub_group[tail->id].link_sec = curr;
8612 }
734b6cf9
AM		 8613 while (tail != curr && (tail = prev) != NULL);
8614
8615 /* But wait, there's more! Input sections up to stub_group_size
8616 bytes before the stub section can be handled by it too.
8617 Don't do this if we have a really large section after the
8618 stubs, as adding more stubs increases the chance that
8619 branches may not reach into the stub section. */
8620 if (!stubs_always_before_branch && !big_sec)
8621 {
8622 total = 0;
8623 while (prev != NULL
8624 && ((total += tail->output_offset - prev->output_offset)
8625 < stub_group_size)
8626 && htab->stub_group[prev->id].toc_off == curr_toc)
8627 {
8628 tail = prev;
8629 prev = PREV_SEC (tail);
8630 htab->stub_group[tail->id].link_sec = curr;
8631 }
8632 }
8633 tail = prev;
721956f4
AM		 8634 }
8635 }
734b6cf9
AM		 8636 while (list-- != htab->input_list);
8637 free (htab->input_list);
721956f4
AM		 8638#undef PREV_SEC
8639}
8640
721956f4
AM		 8641/* Determine and set the size of the stub section for a final link.
8642
8643 The basic idea here is to examine all the relocations looking for
8644 PC-relative calls to a target that is unreachable with a "bl"
8645 instruction. */
8646
b34976b6 8647bfd_boolean
4ce794b7 8648ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8649 struct bfd_link_info *info,
8650 bfd_signed_vma group_size,
8651 asection *(*add_stub_section) (const char *, asection *),
8652 void (*layout_sections_again) (void))
721956f4
AM		 8653{
8654 bfd_size_type stub_group_size;
b34976b6 8655 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8656 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8657
8658 /* Stash our params away. */
721956f4
AM		 8659 htab->add_stub_section = add_stub_section;
8660 htab->layout_sections_again = layout_sections_again;
8661 stubs_always_before_branch = group_size < 0;
8662 if (group_size < 0)
8663 stub_group_size = -group_size;
8664 else
8665 stub_group_size = group_size;
8666 if (stub_group_size == 1)
8667 {
8668 /* Default values. */
58ac9f71
AM		 8669 if (stubs_always_before_branch)
8670 {
8671 stub_group_size = 0x1e00000;
8672 if (htab->has_14bit_branch)
8673 stub_group_size = 0x7800;
8674 }
8675 else
8676 {
8677 stub_group_size = 0x1c00000;
8678 if (htab->has_14bit_branch)
8679 stub_group_size = 0x7000;
8680 }
721956f4
AM		 8681 }
8682
8683 group_sections (htab, stub_group_size, stubs_always_before_branch);
8684
721956f4
AM		 8685 while (1)
8686 {
8687 bfd *input_bfd;
8688 unsigned int bfd_indx;
8689 asection *stub_sec;
b34976b6 8690 bfd_boolean stub_changed;
721956f4
AM		 8691
8692 htab->stub_iteration += 1;
b34976b6 8693 stub_changed = FALSE;
721956f4
AM		 8694
8695 for (input_bfd = info->input_bfds, bfd_indx = 0;
8696 input_bfd != NULL;
8697 input_bfd = input_bfd->link_next, bfd_indx++)
8698 {
8699 Elf_Internal_Shdr *symtab_hdr;
8700 asection *section;
6cdc0ccc 8701 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8702
8703 /* We'll need the symbol table in a second. */
8704 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8705 if (symtab_hdr->sh_info == 0)
8706 continue;
8707
721956f4
AM		 8708 /* Walk over each section attached to the input bfd. */
8709 for (section = input_bfd->sections;
8710 section != NULL;
8711 section = section->next)
8712 {
721956f4 8713 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8714
8715 /* If there aren't any relocs, then there's nothing more
8716 to do. */
8717 if ((section->flags & SEC_RELOC) == 0
8718 || section->reloc_count == 0)
8719 continue;
8720
8721 /* If this section is a link-once section that will be
8722 discarded, then don't create any stubs. */
8723 if (section->output_section == NULL
8724 || section->output_section->owner != output_bfd)
8725 continue;
8726
1e2f5b6e
AM		 8727 /* Get the relocs. */
8728 internal_relocs
4ce794b7 8729 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8730 info->keep_memory);
721956f4 8731 if (internal_relocs == NULL)
1e2f5b6e 8732 goto error_ret_free_local;
721956f4
AM		 8733
8734 /* Now examine each relocation. */
8735 irela = internal_relocs;
8736 irelaend = irela + section->reloc_count;
8737 for (; irela < irelaend; irela++)
8738 {
4ce794b7
AM		 8739 enum elf_ppc64_reloc_type r_type;
8740 unsigned int r_indx;
721956f4
AM		 8741 enum ppc_stub_type stub_type;
8742 struct ppc_stub_hash_entry *stub_entry;
8387904d 8743 asection *sym_sec, *code_sec;
721956f4
AM		 8744 bfd_vma sym_value;
8745 bfd_vma destination;
8843416a 8746 bfd_boolean ok_dest;
721956f4 8747 struct ppc_link_hash_entry *hash;
8387904d 8748 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8749 struct elf_link_hash_entry *h;
8750 Elf_Internal_Sym *sym;
721956f4
AM		 8751 char *stub_name;
8752 const asection *id_sec;
8387904d 8753 long *opd_adjust;
721956f4
AM		 8754
8755 r_type = ELF64_R_TYPE (irela->r_info);
8756 r_indx = ELF64_R_SYM (irela->r_info);
8757
4ce794b7 8758 if (r_type >= R_PPC64_max)
721956f4
AM		 8759 {
8760 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8761 goto error_ret_free_internal;
721956f4
AM		 8762 }
8763
8764 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8765 if (r_type != R_PPC64_REL24
8766 && r_type != R_PPC64_REL14
8767 && r_type != R_PPC64_REL14_BRTAKEN
8768 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8769 continue;
8770
8771 /* Now determine the call target, its name, value,
8772 section. */
411e1bfb
AM		 8773 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8774 r_indx, input_bfd))
8775 goto error_ret_free_internal;
8776 hash = (struct ppc_link_hash_entry *) h;
8777
8843416a 8778 ok_dest = FALSE;
8387904d 8779 fdh = NULL;
411e1bfb 8780 if (hash == NULL)
721956f4 8781 {
411e1bfb 8782 sym_value = sym->st_value;
8843416a 8783 ok_dest = TRUE;
721956f4
AM		 8784 }
8785 else
8786 {
411e1bfb 8787 sym_value = 0;
99877b66
AM		 8788 /* Recognise an old ABI func code entry sym, and
8789 use the func descriptor sym instead. */
ceb1f1ef 8790 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 8791 && (fdh = get_fdh (hash, htab)) != NULL)
8792 {
8387904d
AM		 8793 if (fdh->elf.root.type == bfd_link_hash_defined
8794 || fdh->elf.root.type == bfd_link_hash_defweak)
8795 {
8796 sym_sec = fdh->elf.root.u.def.section;
8797 sym_value = fdh->elf.root.u.def.value;
8798 if (sym_sec->output_section != NULL)
8799 ok_dest = TRUE;
8800 }
99877b66
AM		 8801 else
8802 fdh = NULL;
8387904d
AM		 8803 }
8804 else if (hash->elf.root.type == bfd_link_hash_defined
8805 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8806 {
721956f4
AM		 8807 sym_value = hash->elf.root.u.def.value;
8808 if (sym_sec->output_section != NULL)
8843416a 8809 ok_dest = TRUE;
721956f4
AM		 8810 }
8811 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8812 ;
8813 else if (hash->elf.root.type == bfd_link_hash_undefined)
8814 ;
8815 else
8816 {
8817 bfd_set_error (bfd_error_bad_value);
8818 goto error_ret_free_internal;
8819 }
8820 }
8821
8843416a
AM		 8822 destination = 0;
8823 if (ok_dest)
8824 {
8825 sym_value += irela->r_addend;
8826 destination = (sym_value
8827 + sym_sec->output_offset
8828 + sym_sec->output_section->vma);
8829 }
8830
8387904d
AM		 8831 code_sec = sym_sec;
8832 opd_adjust = get_opd_info (sym_sec);
8833 if (opd_adjust != NULL)
8834 {
8835 bfd_vma dest;
8836
8837 if (hash == NULL)
8838 {
3f764659 8839 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 8840 if (adjust == -1)
8841 continue;
8842 sym_value += adjust;
8843 }
8844 dest = opd_entry_value (sym_sec, sym_value,
8845 &code_sec, &sym_value);
8846 if (dest != (bfd_vma) -1)
8847 {
8848 destination = dest;
8849 if (fdh != NULL)
8850 {
8851 /* Fixup old ABI sym to point at code
8852 entry. */
99877b66 8853 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 8854 hash->elf.root.u.def.section = code_sec;
8855 hash->elf.root.u.def.value = sym_value;
8856 }
8857 }
8858 }
8859
721956f4
AM		 8860 /* Determine what (if any) linker stub is needed. */
8861 stub_type = ppc_type_of_stub (section, irela, &hash,
8862 destination);
ad8e1ba5
AM		 8863
8864 if (stub_type != ppc_stub_plt_call)
8865 {
8866 /* Check whether we need a TOC adjusting stub.
8867 Since the linker pastes together pieces from
8868 different object files when creating the
8869 _init and _fini functions, it may be that a
8870 call to what looks like a local sym is in
8871 fact a call needing a TOC adjustment. */
8387904d
AM		 8872 if (code_sec != NULL
8873 && code_sec->output_section != NULL
8874 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 8875 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 8876 && (code_sec->has_toc_reloc
8877 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 8878 stub_type = ppc_stub_long_branch_r2off;
8879 }
8880
721956f4
AM		 8881 if (stub_type == ppc_stub_none)
8882 continue;
8883
411e1bfb
AM		 8884 /* __tls_get_addr calls might be eliminated. */
8885 if (stub_type != ppc_stub_plt_call
8886 && hash != NULL
8387904d
AM		 8887 && (hash == htab->tls_get_addr
8888 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 8889 && section->has_tls_reloc
8890 && irela != internal_relocs)
8891 {
8892 /* Get tls info. */
e7b938ca 8893 char *tls_mask;
411e1bfb 8894
0d4792f7 8895 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 8896 irela - 1, input_bfd))
8897 goto error_ret_free_internal;
e7b938ca 8898 if (*tls_mask != 0)
411e1bfb
AM		 8899 continue;
8900 }
8901
721956f4
AM		 8902 /* Support for grouping stub sections. */
8903 id_sec = htab->stub_group[section->id].link_sec;
8904
8905 /* Get the name of this stub. */
8906 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8907 if (!stub_name)
8908 goto error_ret_free_internal;
8909
8910 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 8911 stub_name, FALSE, FALSE);
721956f4
AM		 8912 if (stub_entry != NULL)
8913 {
8914 /* The proper stub has already been created. */
8915 free (stub_name);
8916 continue;
8917 }
8918
8919 stub_entry = ppc_add_stub (stub_name, section, htab);
8920 if (stub_entry == NULL)
8921 {
8922 free (stub_name);
6cdc0ccc
AM		 8923 error_ret_free_internal:
8924 if (elf_section_data (section)->relocs == NULL)
8925 free (internal_relocs);
8926 error_ret_free_local:
8927 if (local_syms != NULL
8928 && (symtab_hdr->contents
8929 != (unsigned char *) local_syms))
8930 free (local_syms);
b34976b6 8931 return FALSE;
721956f4
AM		 8932 }
8933
ad8e1ba5 8934 stub_entry->stub_type = stub_type;
721956f4 8935 stub_entry->target_value = sym_value;
8387904d 8936 stub_entry->target_section = code_sec;
721956f4 8937 stub_entry->h = hash;
411e1bfb 8938 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 8939
8940 if (stub_entry->h != NULL)
8941 htab->stub_globals += 1;
8942
b34976b6 8943 stub_changed = TRUE;
721956f4
AM		 8944 }
8945
8946 /* We're done with the internal relocs, free them. */
6cdc0ccc 8947 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 8948 free (internal_relocs);
721956f4 8949 }
6cdc0ccc
AM		 8950
8951 if (local_syms != NULL
8952 && symtab_hdr->contents != (unsigned char *) local_syms)
8953 {
8954 if (!info->keep_memory)
8955 free (local_syms);
8956 else
8957 symtab_hdr->contents = (unsigned char *) local_syms;
8958 }
721956f4
AM		 8959 }
8960
8961 if (!stub_changed)
8962 break;
8963
8964 /* OK, we've added some stubs. Find out the new size of the
8965 stub sections. */
8966 for (stub_sec = htab->stub_bfd->sections;
8967 stub_sec != NULL;
8968 stub_sec = stub_sec->next)
e717da7e 8969 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 8970 {
8971 stub_sec->size = 0;
8972 stub_sec->reloc_count = 0;
8973 }
eea6121a
AM		 8974
8975 htab->brlt->size = 0;
ee75fd95 8976 if (htab->relbrlt != NULL)
eea6121a 8977 htab->relbrlt->size = 0;
721956f4 8978
63bc6f6c 8979 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 8980
8981 /* Ask the linker to do its stuff. */
8982 (*htab->layout_sections_again) ();
8983 }
8984
afbe61cf
AM		 8985 /* It would be nice to strip .branch_lt from the output if the
8986 section is empty, but it's too late. If we strip sections here,
8987 the dynamic symbol table is corrupted since the section symbol
8988 for the stripped section isn't written. */
721956f4 8989
b34976b6 8990 return TRUE;
721956f4
AM		 8991}
8992
8993/* Called after we have determined section placement. If sections
805fc799 8994 move, we'll be called again. Provide a value for TOCstart. */
721956f4 8995
805fc799 8996bfd_vma
4ce794b7 8997ppc64_elf_toc (bfd *obfd)
721956f4 8998{
805fc799
AM		 8999 asection *s;
9000 bfd_vma TOCstart;
721956f4 9001
805fc799
AM		 9002 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9003 order. The TOC starts where the first of these sections starts. */
9004 s = bfd_get_section_by_name (obfd, ".got");
9005 if (s == NULL)
9006 s = bfd_get_section_by_name (obfd, ".toc");
9007 if (s == NULL)
9008 s = bfd_get_section_by_name (obfd, ".tocbss");
9009 if (s == NULL)
9010 s = bfd_get_section_by_name (obfd, ".plt");
9011 if (s == NULL)
9012 {
9013 /* This may happen for
9014 o references to TOC base (SYM@toc / TOC[tc0]) without a
9015 .toc directive
9016 o bad linker script
9017 o --gc-sections and empty TOC sections
9018
9019 FIXME: Warn user? */
9020
9021 /* Look for a likely section. We probably won't even be
9022 using TOCstart. */
9023 for (s = obfd->sections; s != NULL; s = s->next)
9024 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9025 == (SEC_ALLOC | SEC_SMALL_DATA))
9026 break;
721956f4 9027 if (s == NULL)
805fc799
AM		 9028 for (s = obfd->sections; s != NULL; s = s->next)
9029 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9030 == (SEC_ALLOC | SEC_SMALL_DATA))
9031 break;
721956f4 9032 if (s == NULL)
805fc799
AM		 9033 for (s = obfd->sections; s != NULL; s = s->next)
9034 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9035 break;
721956f4 9036 if (s == NULL)
805fc799
AM		 9037 for (s = obfd->sections; s != NULL; s = s->next)
9038 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9039 break;
9040 }
721956f4 9041
805fc799
AM		 9042 TOCstart = 0;
9043 if (s != NULL)
9044 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9045
805fc799 9046 return TOCstart;
721956f4
AM		 9047}
9048
9049/* Build all the stubs associated with the current output file.
9050 The stubs are kept in a hash table attached to the main linker
9051 hash table. This function is called via gldelf64ppc_finish. */
9052
b34976b6 9053bfd_boolean
4ce794b7
AM		 9054ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9055 struct bfd_link_info *info,
9056 char **stats)
5d1634d7
AM		 9057{
9058 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9059 asection *stub_sec;
5d1634d7 9060 bfd_byte *p;
e717da7e 9061 int stub_sec_count = 0;
5d1634d7 9062
ad8e1ba5 9063 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9064
9065 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9066 for (stub_sec = htab->stub_bfd->sections;
9067 stub_sec != NULL;
9068 stub_sec = stub_sec->next)
eea6121a
AM		 9069 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9070 && stub_sec->size != 0)
e717da7e 9071 {
eea6121a
AM		 9072 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9073 if (stub_sec->contents == NULL)
9074 return FALSE;
9075 /* We want to check that built size is the same as calculated
9076 size. rawsize is a convenient location to use. */
9077 stub_sec->rawsize = stub_sec->size;
9078 stub_sec->size = 0;
e717da7e 9079 }
5d1634d7 9080
4ce794b7 9081 if (htab->plt != NULL)
5d1634d7 9082 {
9f951329 9083 unsigned int indx;
ad8e1ba5 9084 bfd_vma plt0;
9f951329 9085
721956f4 9086 /* Build the .glink plt call stub. */
4ce794b7
AM		 9087 plt0 = (htab->plt->output_section->vma
9088 + htab->plt->output_offset
9089 - (htab->glink->output_section->vma
9090 + htab->glink->output_offset
ad8e1ba5
AM		 9091 + GLINK_CALL_STUB_SIZE));
9092 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9093 {
ad8e1ba5
AM		 9094 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9095 bfd_set_error (bfd_error_bad_value);
9096 return FALSE;
721956f4 9097 }
721956f4 9098
97b639ba
AM		 9099 if (htab->emit_stub_syms)
9100 {
9101 struct elf_link_hash_entry *h;
9102 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9103 if (h == NULL)
9104 return FALSE;
9105 if (h->root.type == bfd_link_hash_new)
9106 {
9107 h->root.type = bfd_link_hash_defined;
9108 h->root.u.def.section = htab->glink;
9109 h->root.u.def.value = 0;
f5385ebf
AM		 9110 h->ref_regular = 1;
9111 h->def_regular = 1;
9112 h->ref_regular_nonweak = 1;
9113 h->forced_local = 1;
9114 h->non_elf = 0;
97b639ba
AM		 9115 }
9116 }
4ce794b7
AM		 9117 p = htab->glink->contents;
9118 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9119 p += 4;
4ce794b7 9120 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9121 p += 4;
4ce794b7 9122 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9123 p += 4;
4ce794b7 9124 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9125 p += 4;
4ce794b7 9126 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9127 p += 4;
4ce794b7 9128 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9129 p += 4;
4ce794b7 9130 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9131 p += 4;
4ce794b7 9132 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9133 p += 4;
4ce794b7 9134 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9135 p += 4;
4ce794b7 9136 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9137 p += 4;
4ce794b7 9138 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9139 p += 4;
4ce794b7 9140 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9141 p += 4;
4ce794b7 9142 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9143 p += 4;
4ce794b7 9144 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9145 p += 4;
4ce794b7 9146 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9147 p += 4;
4ce794b7 9148 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9149 p += 4;
9150
9f951329
AM		 9151 /* Build the .glink lazy link call stubs. */
9152 indx = 0;
eea6121a 9153 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9154 {
9155 if (indx < 0x8000)
9156 {
4ce794b7 9157 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9158 p += 4;
9159 }
9160 else
9161 {
4ce794b7 9162 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9163 p += 4;
4ce794b7 9164 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9165 p += 4;
9166 }
4ce794b7
AM		 9167 bfd_put_32 (htab->glink->owner,
9168 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9169 indx++;
9f951329
AM		 9170 p += 4;
9171 }
eea6121a 9172 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9173 }
5d1634d7 9174
eea6121a 9175 if (htab->brlt->size != 0)
721956f4 9176 {
4ce794b7 9177 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9178 htab->brlt->size);
4ce794b7 9179 if (htab->brlt->contents == NULL)
b34976b6 9180 return FALSE;
721956f4 9181 }
ee75fd95 9182 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9183 {
9184 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9185 htab->relbrlt->size);
63bc6f6c
AM		 9186 if (htab->relbrlt->contents == NULL)
9187 return FALSE;
9188 }
5d1634d7 9189
721956f4
AM		 9190 /* Build the stubs as directed by the stub hash table. */
9191 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9192
721956f4
AM		 9193 for (stub_sec = htab->stub_bfd->sections;
9194 stub_sec != NULL;
9195 stub_sec = stub_sec->next)
e717da7e
AM		 9196 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9197 {
9198 stub_sec_count += 1;
eea6121a 9199 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9200 break;
9201 }
5d1634d7 9202
721956f4 9203 if (stub_sec != NULL
eea6121a 9204 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9205 {
b34976b6 9206 htab->stub_error = TRUE;
721956f4 9207 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9208 }
721956f4 9209
d2a300cf
AM		 9210 if (htab->stub_error)
9211 return FALSE;
9212
9213 if (stats != NULL)
9214 {
9215 *stats = bfd_malloc (500);
9216 if (*stats == NULL)
9217 return FALSE;
9218
ee75fd95 9219 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9220 " branch %lu\n"
9221 " toc adjust %lu\n"
9222 " long branch %lu\n"
9223 " long toc adj %lu\n"
9224 " plt call %lu"),
e717da7e 9225 stub_sec_count,
ee75fd95 9226 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9227 htab->stub_count[ppc_stub_long_branch - 1],
9228 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9229 htab->stub_count[ppc_stub_plt_branch - 1],
9230 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9231 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9232 }
9233 return TRUE;
5bd4f169
AM		 9234}
9235
99877b66
AM		 9236/* This function undoes the changes made by add_symbol_adjust. */
9237
9238static bfd_boolean
9239undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9240{
9241 struct ppc_link_hash_entry *eh;
9242
9243 if (h->root.type == bfd_link_hash_indirect)
9244 return TRUE;
9245
9246 if (h->root.type == bfd_link_hash_warning)
9247 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9248
9249 eh = (struct ppc_link_hash_entry *) h;
9250 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9251 return TRUE;
9252
9253 eh->elf.root.type = bfd_link_hash_undefined;
9254 return TRUE;
9255}
9256
9257void
9258ppc64_elf_restore_symbols (struct bfd_link_info *info)
9259{
9260 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9261 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9262}
9263
5bd4f169
AM		 9264/* The RELOCATE_SECTION function is called by the ELF backend linker
9265 to handle the relocations for a section.
9266
9267 The relocs are always passed as Rela structures; if the section
9268 actually uses Rel structures, the r_addend field will always be
9269 zero.
9270
9271 This function is responsible for adjust the section contents as
9272 necessary, and (if using Rela relocs and generating a
1049f94e 9273 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9274 necessary.
9275
9276 This function does not have to worry about setting the reloc
9277 address or the reloc symbol index.
9278
9279 LOCAL_SYMS is a pointer to the swapped in local symbols.
9280
9281 LOCAL_SECTIONS is an array giving the section in the input file
9282 corresponding to the st_shndx field of each local symbol.
9283
9284 The global hash table entry for the global symbols can be found
9285 via elf_sym_hashes (input_bfd).
9286
1049f94e 9287 When generating relocatable output, this function must handle
5bd4f169
AM		 9288 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9289 going to be the section symbol corresponding to the output
9290 section, which means that the addend must be adjusted
9291 accordingly. */
9292
b34976b6 9293static bfd_boolean
4ce794b7
AM		 9294ppc64_elf_relocate_section (bfd *output_bfd,
9295 struct bfd_link_info *info,
9296 bfd *input_bfd,
9297 asection *input_section,
9298 bfd_byte *contents,
9299 Elf_Internal_Rela *relocs,
9300 Elf_Internal_Sym *local_syms,
9301 asection **local_sections)
5bd4f169 9302{
65f38f15 9303 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9304 Elf_Internal_Shdr *symtab_hdr;
9305 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9306 Elf_Internal_Rela *rel;
9307 Elf_Internal_Rela *relend;
411e1bfb
AM		 9308 Elf_Internal_Rela outrel;
9309 bfd_byte *loc;
411e1bfb 9310 struct got_entry **local_got_ents;
5bd4f169 9311 bfd_vma TOCstart;
b34976b6
AM		 9312 bfd_boolean ret = TRUE;
9313 bfd_boolean is_opd;
96e0dda4 9314 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9315 bfd_boolean is_power4 = FALSE;
5bd4f169 9316
1049f94e 9317 if (info->relocatable)
b34976b6 9318 return TRUE;
b491616a 9319
65f38f15 9320 /* Initialize howto table if needed. */
5bd4f169 9321 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9322 ppc_howto_init ();
9323
65f38f15 9324 htab = ppc_hash_table (info);
ee75fd95
AM		 9325
9326 /* Don't relocate stub sections. */
9327 if (input_section->owner == htab->stub_bfd)
9328 return TRUE;
9329
411e1bfb 9330 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9331 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9332 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9333 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9334 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9335
5bd4f169
AM		 9336 rel = relocs;
9337 relend = relocs + input_section->reloc_count;
9338 for (; rel < relend; rel++)
9339 {
04c9666a 9340 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9341 bfd_vma addend;
9342 bfd_reloc_status_type r;
9343 Elf_Internal_Sym *sym;
9344 asection *sec;
039b3fef
AM		 9345 struct elf_link_hash_entry *h_elf;
9346 struct ppc_link_hash_entry *h;
9347 struct ppc_link_hash_entry *fdh;
5bd4f169 9348 const char *sym_name;
0d4792f7 9349 unsigned long r_symndx, toc_symndx;
951fd09b 9350 char tls_mask, tls_gd, tls_type;
0d4792f7 9351 char sym_type;
5bd4f169 9352 bfd_vma relocation;
b34976b6
AM		 9353 bfd_boolean unresolved_reloc;
9354 bfd_boolean warned;
50bc7936 9355 unsigned long insn, mask;
721956f4
AM		 9356 struct ppc_stub_hash_entry *stub_entry;
9357 bfd_vma max_br_offset;
9358 bfd_vma from;
5bd4f169 9359
4ce794b7 9360 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9361 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9362
9363 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9364 symbol of the previous ADDR64 reloc. The symbol gives us the
9365 proper TOC base to use. */
9366 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9367 && rel != relocs
9368 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9369 && is_opd)
9370 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9371
4ce794b7
AM		 9372 sym = NULL;
9373 sec = NULL;
039b3fef 9374 h_elf = NULL;
4ce794b7 9375 sym_name = NULL;
b34976b6
AM		 9376 unresolved_reloc = FALSE;
9377 warned = FALSE;
65f38f15 9378
0b13192e 9379 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9380 {
9381 /* It's a local symbol. */
4025353c
AM		 9382 long *opd_adjust;
9383
5bd4f169
AM		 9384 sym = local_syms + r_symndx;
9385 sec = local_sections[r_symndx];
be8dd2ca 9386 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
0d4792f7 9387 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9388 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9389 opd_adjust = get_opd_info (sec);
9390 if (opd_adjust != NULL)
1e2f5b6e 9391 {
3f764659 9392 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9393 if (adjust == -1)
9394 relocation = 0;
9395 else
9396 relocation += adjust;
1e2f5b6e 9397 }
5bd4f169
AM		 9398 }
9399 else
9400 {
b2a8e766
AM		 9401 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9402 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9403 h_elf, sec, relocation,
b2a8e766 9404 unresolved_reloc, warned);
039b3fef
AM		 9405 sym_name = h_elf->root.root.string;
9406 sym_type = h_elf->type;
5bd4f169 9407 }
039b3fef 9408 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9409
951fd09b
AM		 9410 /* TLS optimizations. Replace instruction sequences and relocs
9411 based on information we collected in tls_optimize. We edit
9412 RELOCS so that --emit-relocs will output something sensible
9413 for the final instruction stream. */
9414 tls_mask = 0;
9415 tls_gd = 0;
0d4792f7 9416 toc_symndx = 0;
d881513a 9417 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9418 {
9419 if (h != NULL)
039b3fef 9420 tls_mask = h->tls_mask;
411e1bfb
AM		 9421 else if (local_got_ents != NULL)
9422 {
e7b938ca
AM		 9423 char *lgot_masks;
9424 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9425 tls_mask = lgot_masks[r_symndx];
411e1bfb 9426 }
0d4792f7
AM		 9427 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9428 {
9429 /* Check for toc tls entries. */
9430 char *toc_tls;
9431
9432 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9433 rel, input_bfd))
9434 return FALSE;
9435
9436 if (toc_tls)
9437 tls_mask = *toc_tls;
9438 }
9439 }
9440
9441 /* Check that tls relocs are used with tls syms, and non-tls
9442 relocs are used with non-tls syms. */
9443 if (r_symndx != 0
9444 && r_type != R_PPC64_NONE
9445 && (h == NULL
039b3fef
AM		 9446 || h->elf.root.type == bfd_link_hash_defined
9447 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9448 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9449 {
9450 if (r_type == R_PPC64_TLS && tls_mask != 0)
9451 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9452 ;
9453 else
9454 (*_bfd_error_handler)
9455 (sym_type == STT_TLS
d003868e
AM		 9456 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9457 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9458 input_bfd,
9459 input_section,
0d4792f7
AM		 9460 (long) rel->r_offset,
9461 ppc64_elf_howto_table[r_type]->name,
9462 sym_name);
411e1bfb
AM		 9463 }
9464
9465 /* Ensure reloc mapping code below stays sane. */
9466 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9467 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9468 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9469 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9470 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9471 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9472 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9473 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9474 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9475 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9476 abort ();
0d4792f7 9477
411e1bfb
AM		 9478 switch (r_type)
9479 {
9480 default:
411e1bfb
AM		 9481 break;
9482
9483 case R_PPC64_TOC16:
9484 case R_PPC64_TOC16_LO:
9485 case R_PPC64_TOC16_DS:
9486 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9487 {
9488 /* Check for toc tls entries. */
9489 char *toc_tls;
951fd09b 9490 int retval;
411e1bfb 9491
0d4792f7
AM		 9492 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9493 rel, input_bfd);
951fd09b 9494 if (retval == 0)
411e1bfb
AM		 9495 return FALSE;
9496
9497 if (toc_tls)
9498 {
951fd09b 9499 tls_mask = *toc_tls;
411e1bfb
AM		 9500 if (r_type == R_PPC64_TOC16_DS
9501 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9502 {
9503 if (tls_mask != 0
9504 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9505 goto toctprel;
9506 }
411e1bfb 9507 else
951fd09b
AM		 9508 {
9509 /* If we found a GD reloc pair, then we might be
9510 doing a GD->IE transition. */
9511 if (retval == 2)
9512 {
9513 tls_gd = TLS_TPRELGD;
9514 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9515 goto tls_get_addr_check;
9516 }
9517 else if (retval == 3)
9518 {
9519 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9520 goto tls_get_addr_check;
9521 }
9522 }
411e1bfb
AM		 9523 }
9524 }
9525 break;
9526
9527 case R_PPC64_GOT_TPREL16_DS:
9528 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9529 if (tls_mask != 0
9530 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9531 {
81407a69 9532 toctprel:
411e1bfb
AM		 9533 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9534 insn &= 31 << 21;
9535 insn |= 0x3c0d0000; /* addis 0,13,0 */
9536 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9537 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9538 if (toc_symndx != 0)
9539 {
9540 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9541 /* We changed the symbol. Start over in order to
9542 get h, sym, sec etc. right. */
9543 rel--;
9544 continue;
9545 }
9546 else
9547 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9548 }
9549 break;
9550
9551 case R_PPC64_TLS:
951fd09b
AM		 9552 if (tls_mask != 0
9553 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9554 {
50bc7936 9555 bfd_vma rtra;
411e1bfb 9556 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9557 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9558 == ((31 << 26) | (13 << 11)))
9559 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9560 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9561 == ((31 << 26) | (13 << 16)))
9562 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9563 else
9564 abort ();
9565 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9566 /* add -> addi. */
9567 insn = 14 << 26;
9568 else if ((insn & (31 << 1)) == 23 << 1
9569 && ((insn & (31 << 6)) < 14 << 6
9570 || ((insn & (31 << 6)) >= 16 << 6
9571 && (insn & (31 << 6)) < 24 << 6)))
9572 /* load and store indexed -> dform. */
9573 insn = (32 | ((insn >> 6) & 31)) << 26;
9574 else if ((insn & (31 << 1)) == 21 << 1
9575 && (insn & (0x1a << 6)) == 0)
9576 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9577 insn = (((58 | ((insn >> 6) & 4)) << 26)
9578 | ((insn >> 6) & 1));
9579 else if ((insn & (31 << 1)) == 21 << 1
9580 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9581 /* lwax -> lwa. */
9582 insn = (58 << 26) | 2;
9583 else
9584 abort ();
9585 insn |= rtra;
9586 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9587 /* Was PPC64_TLS which sits on insn boundary, now
9588 PPC64_TPREL16_LO which is at insn+2. */
9589 rel->r_offset += 2;
0d4792f7
AM		 9590 r_type = R_PPC64_TPREL16_LO;
9591 if (toc_symndx != 0)
9592 {
9593 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9594 /* We changed the symbol. Start over in order to
9595 get h, sym, sec etc. right. */
9596 rel--;
9597 continue;
9598 }
9599 else
9600 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9601 }
9602 break;
9603
411e1bfb
AM		 9604 case R_PPC64_GOT_TLSGD16_HI:
9605 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9606 tls_gd = TLS_TPRELGD;
9607 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9608 goto tls_gdld_hi;
9609 break;
9610
411e1bfb
AM		 9611 case R_PPC64_GOT_TLSLD16_HI:
9612 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9613 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9614 {
951fd09b
AM		 9615 tls_gdld_hi:
9616 if ((tls_mask & tls_gd) != 0)
9617 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9618 + R_PPC64_GOT_TPREL16_DS);
9619 else
411e1bfb 9620 {
951fd09b
AM		 9621 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9622 rel->r_offset -= 2;
9623 r_type = R_PPC64_NONE;
411e1bfb 9624 }
951fd09b 9625 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9626 }
9627 break;
9628
951fd09b
AM		 9629 case R_PPC64_GOT_TLSGD16:
9630 case R_PPC64_GOT_TLSGD16_LO:
9631 tls_gd = TLS_TPRELGD;
9632 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9633 goto tls_get_addr_check;
9634 break;
411e1bfb 9635
951fd09b
AM		 9636 case R_PPC64_GOT_TLSLD16:
9637 case R_PPC64_GOT_TLSLD16_LO:
9638 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9639 {
9640 tls_get_addr_check:
9641 if (rel + 1 < relend)
411e1bfb 9642 {
951fd09b
AM		 9643 enum elf_ppc64_reloc_type r_type2;
9644 unsigned long r_symndx2;
9645 struct elf_link_hash_entry *h2;
9646 bfd_vma insn1, insn2, insn3;
9647 bfd_vma offset;
9648
9649 /* The next instruction should be a call to
9650 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9651 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9652 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9653 if (r_symndx2 < symtab_hdr->sh_info
9654 || (r_type2 != R_PPC64_REL14
9655 && r_type2 != R_PPC64_REL14_BRTAKEN
9656 && r_type2 != R_PPC64_REL14_BRNTAKEN
9657 && r_type2 != R_PPC64_REL24))
9658 break;
9659
9660 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9661 while (h2->root.type == bfd_link_hash_indirect
9662 || h2->root.type == bfd_link_hash_warning)
9663 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9664 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9665 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9666 break;
9667
9668 /* OK, it checks out. Replace the call. */
9669 offset = rel[1].r_offset;
9670 insn1 = bfd_get_32 (output_bfd,
9671 contents + rel->r_offset - 2);
9672 insn3 = bfd_get_32 (output_bfd,
9673 contents + offset + 4);
9674 if ((tls_mask & tls_gd) != 0)
411e1bfb 9675 {
951fd09b
AM		 9676 /* IE */
9677 insn1 &= (1 << 26) - (1 << 2);
9678 insn1 |= 58 << 26; /* ld */
9679 insn2 = 0x7c636a14; /* add 3,3,13 */
9680 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9681 if ((tls_mask & TLS_EXPLICIT) == 0)
9682 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9683 + R_PPC64_GOT_TPREL16_DS);
9684 else
9685 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9686 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9687 }
9688 else
951fd09b
AM		 9689 {
9690 /* LE */
9691 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9692 insn2 = 0x38630000; /* addi 3,3,0 */
9693 if (tls_gd == 0)
9694 {
9695 /* Was an LD reloc. */
9696 r_symndx = 0;
e1918d23
AM		 9697 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9698 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9699 }
0d4792f7
AM		 9700 else if (toc_symndx != 0)
9701 r_symndx = toc_symndx;
951fd09b
AM		 9702 r_type = R_PPC64_TPREL16_HA;
9703 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9704 rel[1].r_info = ELF64_R_INFO (r_symndx,
9705 R_PPC64_TPREL16_LO);
9706 rel[1].r_offset += 2;
9707 }
9708 if (insn3 == NOP
9709 || insn3 == CROR_151515 || insn3 == CROR_313131)
9710 {
9711 insn3 = insn2;
9712 insn2 = NOP;
9713 rel[1].r_offset += 4;
9714 }
9715 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9716 bfd_put_32 (output_bfd, insn2, contents + offset);
9717 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9718 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9719 {
0d4792f7
AM		 9720 /* We changed the symbol. Start over in order
9721 to get h, sym, sec etc. right. */
951fd09b
AM		 9722 rel--;
9723 continue;
9724 }
411e1bfb 9725 }
411e1bfb 9726 }
411e1bfb
AM		 9727 break;
9728
9729 case R_PPC64_DTPMOD64:
951fd09b
AM		 9730 if (rel + 1 < relend
9731 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9732 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9733 {
951fd09b
AM		 9734 if ((tls_mask & TLS_GD) == 0)
9735 {
9736 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9737 if ((tls_mask & TLS_TPRELGD) != 0)
9738 r_type = R_PPC64_TPREL64;
9739 else
9740 {
4ce794b7 9741 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9742 r_type = R_PPC64_NONE;
9743 }
9744 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9745 }
9746 }
9747 else
9748 {
9749 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9750 {
4ce794b7 9751 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9752 r_type = R_PPC64_NONE;
951fd09b 9753 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9754 }
411e1bfb
AM		 9755 }
9756 break;
9757
9758 case R_PPC64_TPREL64:
951fd09b 9759 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9760 {
9761 r_type = R_PPC64_NONE;
9762 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9763 }
9764 break;
9765 }
9766
9767 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9768 insn = 0;
b25116a9
AM		 9769 max_br_offset = 1 << 25;
9770 addend = rel->r_addend;
65f38f15 9771 switch (r_type)
5bd4f169
AM		 9772 {
9773 default:
65f38f15 9774 break;
5bd4f169 9775
65f38f15
AM		 9776 /* Branch taken prediction relocations. */
9777 case R_PPC64_ADDR14_BRTAKEN:
9778 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9779 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9780 /* Fall thru. */
65f38f15 9781
86c76c7b 9782 /* Branch not taken prediction relocations. */
65f38f15
AM		 9783 case R_PPC64_ADDR14_BRNTAKEN:
9784 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9785 insn |= bfd_get_32 (output_bfd,
9786 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9787 /* Fall thru. */
86c76c7b 9788
b25116a9
AM		 9789 case R_PPC64_REL14:
9790 max_br_offset = 1 << 15;
9791 /* Fall thru. */
5bd4f169 9792
65f38f15 9793 case R_PPC64_REL24:
ad8e1ba5
AM		 9794 /* Calls to functions with a different TOC, such as calls to
9795 shared objects, need to alter the TOC pointer. This is
9796 done using a linkage stub. A REL24 branching to these
9797 linkage stubs needs to be followed by a nop, as the nop
9798 will be replaced with an instruction to restore the TOC
9799 base pointer. */
b25116a9 9800 stub_entry = NULL;
8387904d 9801 fdh = h;
ad8e1ba5 9802 if (((h != NULL
039b3fef
AM		 9803 && (((fdh = h->oh) != NULL
9804 && fdh->elf.plt.plist != NULL)
9805 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9806 || (sec != NULL
ad8e1ba5 9807 && sec->output_section != NULL
b25116a9 9808 && sec->id <= htab->top_id
ad8e1ba5
AM		 9809 && (htab->stub_group[sec->id].toc_off
9810 != htab->stub_group[input_section->id].toc_off)))
721956f4 9811 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9812 rel, htab)) != NULL
9813 && (stub_entry->stub_type == ppc_stub_plt_call
9814 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9815 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9816 {
b25116a9 9817 bfd_boolean can_plt_call = FALSE;
721956f4 9818
eea6121a 9819 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9820 {
b25116a9
AM		 9821 unsigned long nop;
9822 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9823 if (nop == NOP
9824 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9825 {
4ce794b7 9826 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9827 contents + rel->r_offset + 4);
b25116a9 9828 can_plt_call = TRUE;
41bd81ab 9829 }
5bd4f169 9830 }
721956f4
AM		 9831
9832 if (!can_plt_call)
9833 {
ad8e1ba5
AM		 9834 if (stub_entry->stub_type == ppc_stub_plt_call)
9835 {
9836 /* If this is a plain branch rather than a branch
9837 and link, don't require a nop. */
b25116a9
AM		 9838 unsigned long br;
9839 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9840 if ((br & 1) == 0)
9841 can_plt_call = TRUE;
ad8e1ba5 9842 }
6ab189d5 9843 else if (h != NULL
039b3fef 9844 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 9845 ".__libc_start_main") == 0)
9846 {
9847 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 9848 can_plt_call = TRUE;
6ab189d5 9849 }
ad8e1ba5
AM		 9850 else
9851 {
9852 if (strcmp (input_section->output_section->name,
9853 ".init") == 0
9854 || strcmp (input_section->output_section->name,
9855 ".fini") == 0)
9856 (*_bfd_error_handler)
d003868e 9857 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 9858 "not supported using your crt files; "
9859 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 9860 input_bfd,
9861 input_section,
ad8e1ba5
AM		 9862 (long) rel->r_offset);
9863 else
9864 (*_bfd_error_handler)
d003868e 9865 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 9866 "does not allow automatic multiple TOCs; "
9867 "recompile with -mminimal-toc or "
9868 "-fno-optimize-sibling-calls, "
9869 "or make `%s' extern"),
d003868e
AM		 9870 input_bfd,
9871 input_section,
ad8e1ba5
AM		 9872 (long) rel->r_offset,
9873 sym_name,
9874 sym_name);
9875 bfd_set_error (bfd_error_bad_value);
9876 ret = FALSE;
9877 }
721956f4
AM		 9878 }
9879
b25116a9
AM		 9880 if (can_plt_call
9881 && stub_entry->stub_type == ppc_stub_plt_call)
9882 unresolved_reloc = FALSE;
9883 }
9884
8387904d
AM		 9885 if (stub_entry == NULL
9886 && get_opd_info (sec) != NULL)
9887 {
9888 /* The branch destination is the value of the opd entry. */
9889 bfd_vma off = (relocation - sec->output_section->vma
9890 - sec->output_offset + rel->r_addend);
9891 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9892 if (dest != (bfd_vma) -1)
9893 {
9894 relocation = dest;
9895 addend = 0;
9896 }
9897 }
9898
b25116a9
AM		 9899 /* If the branch is out of reach we ought to have a long
9900 branch stub. */
9901 from = (rel->r_offset
9902 + input_section->output_offset
9903 + input_section->output_section->vma);
9904
9905 if (stub_entry == NULL
9906 && (relocation + rel->r_addend - from + max_br_offset
9907 >= 2 * max_br_offset)
9908 && r_type != R_PPC64_ADDR14_BRTAKEN
9909 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 9910 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9911 htab);
b25116a9
AM		 9912
9913 if (stub_entry != NULL)
9914 {
9915 /* Munge up the value and addend so that we call the stub
9916 rather than the procedure directly. */
9917 relocation = (stub_entry->stub_offset
9918 + stub_entry->stub_sec->output_offset
9919 + stub_entry->stub_sec->output_section->vma);
9920 addend = 0;
9921 }
9922
9923 if (insn != 0)
9924 {
9925 if (is_power4)
721956f4 9926 {
b25116a9
AM		 9927 /* Set 'a' bit. This is 0b00010 in BO field for branch
9928 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9929 for branch on CTR insns (BO == 1a00t or 1a01t). */
9930 if ((insn & (0x14 << 21)) == (0x04 << 21))
9931 insn |= 0x02 << 21;
9932 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9933 insn |= 0x08 << 21;
9934 else
9935 break;
9936 }
9937 else
9938 {
9939 /* Invert 'y' bit if not the default. */
9940 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9941 insn ^= 0x01 << 21;
721956f4 9942 }
b25116a9
AM		 9943
9944 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 9945 }
e86ce104 9946
06da1e8e
AM		 9947 /* NOP out calls to undefined weak functions.
9948 We can thus call a weak function without first
9949 checking whether the function is defined. */
b25116a9 9950 else if (h != NULL
039b3fef 9951 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 9952 && r_type == R_PPC64_REL24
9953 && relocation == 0
9954 && rel->r_addend == 0)
e86ce104 9955 {
06da1e8e
AM		 9956 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9957 continue;
e86ce104 9958 }
65f38f15
AM		 9959 break;
9960 }
5bd4f169 9961
65f38f15 9962 /* Set `addend'. */
411e1bfb 9963 tls_type = 0;
65f38f15
AM		 9964 switch (r_type)
9965 {
9966 default:
9967 (*_bfd_error_handler)
d003868e
AM		 9968 (_("%B: unknown relocation type %d for symbol %s"),
9969 input_bfd, (int) r_type, sym_name);
5bd4f169 9970
65f38f15 9971 bfd_set_error (bfd_error_bad_value);
b34976b6 9972 ret = FALSE;
65f38f15 9973 continue;
5bd4f169 9974
65f38f15 9975 case R_PPC64_NONE:
411e1bfb 9976 case R_PPC64_TLS:
04c9666a
AM		 9977 case R_PPC64_GNU_VTINHERIT:
9978 case R_PPC64_GNU_VTENTRY:
65f38f15 9979 continue;
5bd4f169
AM		 9980
9981 /* GOT16 relocations. Like an ADDR16 using the symbol's
9982 address in the GOT as relocation value instead of the
411e1bfb 9983 symbol's value itself. Also, create a GOT entry for the
5bd4f169 9984 symbol and put the symbol value there. */
411e1bfb
AM		 9985 case R_PPC64_GOT_TLSGD16:
9986 case R_PPC64_GOT_TLSGD16_LO:
9987 case R_PPC64_GOT_TLSGD16_HI:
9988 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 9989 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 9990 goto dogot;
9991
9992 case R_PPC64_GOT_TLSLD16:
9993 case R_PPC64_GOT_TLSLD16_LO:
9994 case R_PPC64_GOT_TLSLD16_HI:
9995 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9996 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 9997 goto dogot;
9998
9999 case R_PPC64_GOT_TPREL16_DS:
10000 case R_PPC64_GOT_TPREL16_LO_DS:
10001 case R_PPC64_GOT_TPREL16_HI:
10002 case R_PPC64_GOT_TPREL16_HA:
10003 tls_type = TLS_TLS | TLS_TPREL;
10004 goto dogot;
10005
10006 case R_PPC64_GOT_DTPREL16_DS:
10007 case R_PPC64_GOT_DTPREL16_LO_DS:
10008 case R_PPC64_GOT_DTPREL16_HI:
10009 case R_PPC64_GOT_DTPREL16_HA:
10010 tls_type = TLS_TLS | TLS_DTPREL;
10011 goto dogot;
10012
65f38f15
AM		 10013 case R_PPC64_GOT16:
10014 case R_PPC64_GOT16_LO:
10015 case R_PPC64_GOT16_HI:
10016 case R_PPC64_GOT16_HA:
10017 case R_PPC64_GOT16_DS:
10018 case R_PPC64_GOT16_LO_DS:
411e1bfb 10019 dogot:
5bd4f169
AM		 10020 {
10021 /* Relocation is to the entry for this symbol in the global
10022 offset table. */
e717da7e 10023 asection *got;
d881513a 10024 bfd_vma *offp;
5bd4f169 10025 bfd_vma off;
d881513a 10026 unsigned long indx = 0;
65f38f15 10027
d881513a
AM		 10028 if (tls_type == (TLS_TLS | TLS_LD)
10029 && (h == NULL
f5385ebf 10030 || !h->elf.def_dynamic))
e717da7e 10031 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10032 else
5bd4f169 10033 {
d881513a 10034 struct got_entry *ent;
5bd4f169 10035
d881513a
AM		 10036 if (h != NULL)
10037 {
10038 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10039 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10040 &h->elf)
d881513a 10041 || (info->shared
039b3fef 10042 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10043 /* This is actually a static link, or it is a
10044 -Bsymbolic link and the symbol is defined
10045 locally, or the symbol was forced to be local
10046 because of a version file. */
10047 ;
10048 else
10049 {
039b3fef 10050 indx = h->elf.dynindx;
d881513a
AM		 10051 unresolved_reloc = FALSE;
10052 }
039b3fef 10053 ent = h->elf.got.glist;
d881513a 10054 }
411e1bfb 10055 else
5bd4f169 10056 {
d881513a
AM		 10057 if (local_got_ents == NULL)
10058 abort ();
10059 ent = local_got_ents[r_symndx];
5bd4f169 10060 }
d881513a
AM		 10061
10062 for (; ent != NULL; ent = ent->next)
10063 if (ent->addend == rel->r_addend
e717da7e 10064 && ent->owner == input_bfd
d881513a
AM		 10065 && ent->tls_type == tls_type)
10066 break;
10067 if (ent == NULL)
10068 abort ();
10069 offp = &ent->got.offset;
5bd4f169 10070 }
411e1bfb 10071
e717da7e
AM		 10072 got = ppc64_elf_tdata (input_bfd)->got;
10073 if (got == NULL)
10074 abort ();
10075
411e1bfb
AM		 10076 /* The offset must always be a multiple of 8. We use the
10077 least significant bit to record whether we have already
10078 processed this entry. */
d881513a 10079 off = *offp;
411e1bfb
AM		 10080 if ((off & 1) != 0)
10081 off &= ~1;
5bd4f169
AM		 10082 else
10083 {
411e1bfb
AM		 10084 /* Generate relocs for the dynamic linker, except in
10085 the case of TLSLD where we'll use one entry per
10086 module. */
e717da7e
AM		 10087 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10088
d881513a 10089 *offp = off | 1;
4e795f50
AM		 10090 if ((info->shared || indx != 0)
10091 && (h == NULL
039b3fef
AM		 10092 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10093 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10094 {
e717da7e
AM		 10095 outrel.r_offset = (got->output_section->vma
10096 + got->output_offset
411e1bfb 10097 + off);
81407a69 10098 outrel.r_addend = rel->r_addend;
d881513a 10099 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10100 {
411e1bfb 10101 outrel.r_addend = 0;
e515b051 10102 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10103 if (tls_type == (TLS_TLS | TLS_GD))
10104 {
e717da7e
AM		 10105 loc = relgot->contents;
10106 loc += (relgot->reloc_count++
d881513a
AM		 10107 * sizeof (Elf64_External_Rela));
10108 bfd_elf64_swap_reloca_out (output_bfd,
10109 &outrel, loc);
e515b051 10110 outrel.r_offset += 8;
81407a69 10111 outrel.r_addend = rel->r_addend;
d881513a
AM		 10112 outrel.r_info
10113 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10114 }
411e1bfb 10115 }
951fd09b 10116 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10117 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10118 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10119 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10120 else if (indx == 0)
81407a69
AM		 10121 {
10122 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10123
10124 /* Write the .got section contents for the sake
10125 of prelink. */
e717da7e 10126 loc = got->contents + off;
23fbd6fa
JJ		 10127 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10128 loc);
81407a69 10129 }
411e1bfb
AM		 10130 else
10131 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10132
10133 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10134 {
10135 outrel.r_addend += relocation;
10136 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10137 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10138 }
e717da7e
AM		 10139 loc = relgot->contents;
10140 loc += (relgot->reloc_count++
411e1bfb
AM		 10141 * sizeof (Elf64_External_Rela));
10142 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10143 }
10144
ad8e1ba5 10145 /* Init the .got section contents here if we're not
81407a69 10146 emitting a reloc. */
d881513a 10147 else
411e1bfb 10148 {
d881513a 10149 relocation += rel->r_addend;
7b609f53
AM		 10150 if (tls_type == (TLS_TLS | TLS_LD))
10151 relocation = 1;
10152 else if (tls_type != 0)
411e1bfb 10153 {
e1918d23 10154 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10155 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10156 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10157
7b609f53
AM		 10158 if (tls_type == (TLS_TLS | TLS_GD))
10159 {
10160 bfd_put_64 (output_bfd, relocation,
e717da7e 10161 got->contents + off + 8);
7b609f53
AM		 10162 relocation = 1;
10163 }
411e1bfb 10164 }
7b609f53 10165
411e1bfb 10166 bfd_put_64 (output_bfd, relocation,
e717da7e 10167 got->contents + off);
5bd4f169
AM		 10168 }
10169 }
10170
65f38f15
AM		 10171 if (off >= (bfd_vma) -2)
10172 abort ();
10173
e717da7e 10174 relocation = got->output_offset + off;
65f38f15 10175
5bd4f169 10176 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10177 addend = -TOC_BASE_OFF;
5bd4f169 10178 }
65f38f15
AM		 10179 break;
10180
10181 case R_PPC64_PLT16_HA:
10182 case R_PPC64_PLT16_HI:
10183 case R_PPC64_PLT16_LO:
10184 case R_PPC64_PLT32:
10185 case R_PPC64_PLT64:
10186 /* Relocation is to the entry for this symbol in the
10187 procedure linkage table. */
10188
10189 /* Resolve a PLT reloc against a local symbol directly,
10190 without using the procedure linkage table. */
10191 if (h == NULL)
10192 break;
10193
411e1bfb
AM		 10194 /* It's possible that we didn't make a PLT entry for this
10195 symbol. This happens when statically linking PIC code,
10196 or when using -Bsymbolic. Go find a match if there is a
10197 PLT entry. */
4ce794b7 10198 if (htab->plt != NULL)
65f38f15 10199 {
411e1bfb 10200 struct plt_entry *ent;
039b3fef 10201 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10202 if (ent->addend == rel->r_addend
10203 && ent->plt.offset != (bfd_vma) -1)
10204 {
4ce794b7
AM		 10205 relocation = (htab->plt->output_section->vma
10206 + htab->plt->output_offset
411e1bfb
AM		 10207 + ent->plt.offset);
10208 unresolved_reloc = FALSE;
10209 }
65f38f15 10210 }
65f38f15 10211 break;
5bd4f169 10212
0b13192e
AM		 10213 case R_PPC64_TOC:
10214 /* Relocation value is TOC base. */
10215 relocation = TOCstart;
10216 if (r_symndx == 0)
10217 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10218 else if (unresolved_reloc)
10219 ;
10220 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10221 relocation += htab->stub_group[sec->id].toc_off;
10222 else
10223 unresolved_reloc = TRUE;
10224 goto dodyn2;
10225
5bd4f169
AM		 10226 /* TOC16 relocs. We want the offset relative to the TOC base,
10227 which is the address of the start of the TOC plus 0x8000.
10228 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10229 in this order. */
65f38f15
AM		 10230 case R_PPC64_TOC16:
10231 case R_PPC64_TOC16_LO:
10232 case R_PPC64_TOC16_HI:
10233 case R_PPC64_TOC16_DS:
10234 case R_PPC64_TOC16_LO_DS:
10235 case R_PPC64_TOC16_HA:
ad8e1ba5 10236 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10237 break;
10238
10239 /* Relocate against the beginning of the section. */
65f38f15
AM		 10240 case R_PPC64_SECTOFF:
10241 case R_PPC64_SECTOFF_LO:
10242 case R_PPC64_SECTOFF_HI:
10243 case R_PPC64_SECTOFF_DS:
10244 case R_PPC64_SECTOFF_LO_DS:
10245 case R_PPC64_SECTOFF_HA:
4ce794b7 10246 if (sec != NULL)
65f38f15 10247 addend -= sec->output_section->vma;
5bd4f169
AM		 10248 break;
10249
721956f4
AM		 10250 case R_PPC64_REL14:
10251 case R_PPC64_REL14_BRNTAKEN:
10252 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10253 case R_PPC64_REL24:
10254 break;
10255
411e1bfb
AM		 10256 case R_PPC64_TPREL16:
10257 case R_PPC64_TPREL16_LO:
10258 case R_PPC64_TPREL16_HI:
10259 case R_PPC64_TPREL16_HA:
10260 case R_PPC64_TPREL16_DS:
10261 case R_PPC64_TPREL16_LO_DS:
10262 case R_PPC64_TPREL16_HIGHER:
10263 case R_PPC64_TPREL16_HIGHERA:
10264 case R_PPC64_TPREL16_HIGHEST:
10265 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10266 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10267 if (info->shared)
10268 /* The TPREL16 relocs shouldn't really be used in shared
10269 libs as they will result in DT_TEXTREL being set, but
10270 support them anyway. */
10271 goto dodyn;
10272 break;
10273
10274 case R_PPC64_DTPREL16:
10275 case R_PPC64_DTPREL16_LO:
10276 case R_PPC64_DTPREL16_HI:
10277 case R_PPC64_DTPREL16_HA:
10278 case R_PPC64_DTPREL16_DS:
10279 case R_PPC64_DTPREL16_LO_DS:
10280 case R_PPC64_DTPREL16_HIGHER:
10281 case R_PPC64_DTPREL16_HIGHERA:
10282 case R_PPC64_DTPREL16_HIGHEST:
10283 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10284 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10285 break;
10286
e515b051
AM		 10287 case R_PPC64_DTPMOD64:
10288 relocation = 1;
10289 addend = 0;
10290 goto dodyn;
10291
411e1bfb 10292 case R_PPC64_TPREL64:
e1918d23 10293 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10294 goto dodyn;
10295
10296 case R_PPC64_DTPREL64:
e1918d23 10297 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10298 /* Fall thru */
10299
65f38f15
AM		 10300 /* Relocations that may need to be propagated if this is a
10301 dynamic object. */
04c9666a 10302 case R_PPC64_REL30:
65f38f15
AM		 10303 case R_PPC64_REL32:
10304 case R_PPC64_REL64:
10305 case R_PPC64_ADDR14:
10306 case R_PPC64_ADDR14_BRNTAKEN:
10307 case R_PPC64_ADDR14_BRTAKEN:
10308 case R_PPC64_ADDR16:
10309 case R_PPC64_ADDR16_DS:
10310 case R_PPC64_ADDR16_HA:
10311 case R_PPC64_ADDR16_HI:
10312 case R_PPC64_ADDR16_HIGHER:
10313 case R_PPC64_ADDR16_HIGHERA:
10314 case R_PPC64_ADDR16_HIGHEST:
10315 case R_PPC64_ADDR16_HIGHESTA:
10316 case R_PPC64_ADDR16_LO:
10317 case R_PPC64_ADDR16_LO_DS:
10318 case R_PPC64_ADDR24:
65f38f15
AM		 10319 case R_PPC64_ADDR32:
10320 case R_PPC64_ADDR64:
10321 case R_PPC64_UADDR16:
10322 case R_PPC64_UADDR32:
10323 case R_PPC64_UADDR64:
ec338859
AM		 10324 /* r_symndx will be zero only for relocs against symbols
10325 from removed linkonce sections, or sections discarded by
10326 a linker script. */
411e1bfb 10327 dodyn:
5d1634d7
AM		 10328 if (r_symndx == 0)
10329 break;
10330 /* Fall thru. */
10331
0b13192e 10332 dodyn2:
5d1634d7 10333 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10334 break;
10335
41bd81ab
AM		 10336 if (NO_OPD_RELOCS && is_opd)
10337 break;
10338
65f38f15 10339 if ((info->shared
4e795f50 10340 && (h == NULL
039b3fef
AM		 10341 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10342 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10343 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10344 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10345 || (ELIMINATE_COPY_RELOCS
10346 && !info->shared
65f38f15 10347 && h != NULL
039b3fef 10348 && h->elf.dynindx != -1
f5385ebf
AM		 10349 && !h->elf.non_got_ref
10350 && h->elf.def_dynamic
10351 && !h->elf.def_regular))
65f38f15
AM		 10352 {
10353 Elf_Internal_Rela outrel;
b34976b6 10354 bfd_boolean skip, relocate;
65f38f15 10355 asection *sreloc;
947216bf 10356 bfd_byte *loc;
1cf1f670 10357 bfd_vma out_off;
65f38f15
AM		 10358
10359 /* When generating a dynamic object, these relocations
10360 are copied into the output file to be resolved at run
10361 time. */
10362
b34976b6
AM		 10363 skip = FALSE;
10364 relocate = FALSE;
65f38f15 10365
1cf1f670
AM		 10366 out_off = _bfd_elf_section_offset (output_bfd, info,
10367 input_section, rel->r_offset);
10368 if (out_off == (bfd_vma) -1)
b34976b6 10369 skip = TRUE;
1cf1f670 10370 else if (out_off == (bfd_vma) -2)
b34976b6 10371 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10372 out_off += (input_section->output_section->vma
10373 + input_section->output_offset);
10374 outrel.r_offset = out_off;
411e1bfb 10375 outrel.r_addend = rel->r_addend;
65f38f15 10376
1cf1f670
AM		 10377 /* Optimize unaligned reloc use. */
10378 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10379 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10380 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10381 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10382 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10383 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10384 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10385 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10386 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10387
65f38f15 10388 if (skip)
0bb2d96a 10389 memset (&outrel, 0, sizeof outrel);
039b3fef 10390 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10391 && !is_opd
10392 && r_type != R_PPC64_TOC)
039b3fef 10393 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10394 else
10395 {
41bd81ab
AM		 10396 /* This symbol is local, or marked to become local,
10397 or this is an opd section reloc which must point
10398 at a local function. */
65f38f15 10399 outrel.r_addend += relocation;
e86ce104 10400 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10401 {
3fad3c7c 10402 if (is_opd && h != NULL)
afbe61cf
AM		 10403 {
10404 /* Lie about opd entries. This case occurs
10405 when building shared libraries and we
10406 reference a function in another shared
3fad3c7c
AM		 10407 lib. The same thing happens for a weak
10408 definition in an application that's
10409 overridden by a strong definition in a
10410 shared lib. (I believe this is a generic
10411 bug in binutils handling of weak syms.)
10412 In these cases we won't use the opd
1e2f5b6e 10413 entry in this lib. */
b34976b6 10414 unresolved_reloc = FALSE;
afbe61cf 10415 }
65f38f15 10416 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10417
10418 /* We need to relocate .opd contents for ld.so.
10419 Prelink also wants simple and consistent rules
10420 for relocs. This make all RELATIVE relocs have
10421 *r_offset equal to r_addend. */
10422 relocate = TRUE;
65f38f15
AM		 10423 }
10424 else
10425 {
10426 long indx = 0;
10427
41bd81ab 10428 if (bfd_is_abs_section (sec))
65f38f15
AM		 10429 ;
10430 else if (sec == NULL || sec->owner == NULL)
10431 {
10432 bfd_set_error (bfd_error_bad_value);
b34976b6 10433 return FALSE;
65f38f15
AM		 10434 }
10435 else
10436 {
10437 asection *osec;
10438
10439 osec = sec->output_section;
10440 indx = elf_section_data (osec)->dynindx;
10441
10442 /* We are turning this relocation into one
10443 against a section symbol, so subtract out
10444 the output section's address but not the
10445 offset of the input section in the output
10446 section. */
10447 outrel.r_addend -= osec->vma;
10448 }
10449
10450 outrel.r_info = ELF64_R_INFO (indx, r_type);
10451 }
10452 }
10453
10454 sreloc = elf_section_data (input_section)->sreloc;
10455 if (sreloc == NULL)
10456 abort ();
10457
947216bf
AM		 10458 loc = sreloc->contents;
10459 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10460 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10461
10462 /* If this reloc is against an external symbol, it will
10463 be computed at runtime, so there's no need to do
81407a69
AM		 10464 anything now. However, for the sake of prelink ensure
10465 that the section contents are a known value. */
65f38f15 10466 if (! relocate)
81407a69
AM		 10467 {
10468 unresolved_reloc = FALSE;
10469 /* The value chosen here is quite arbitrary as ld.so
10470 ignores section contents except for the special
10471 case of .opd where the contents might be accessed
10472 before relocation. Choose zero, as that won't
10473 cause reloc overflow. */
10474 relocation = 0;
10475 addend = 0;
10476 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10477 to improve backward compatibility with older
10478 versions of ld. */
10479 if (r_type == R_PPC64_ADDR64)
10480 addend = outrel.r_addend;
10481 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10482 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10483 addend = (input_section->output_section->vma
10484 + input_section->output_offset
10485 + rel->r_offset);
81407a69 10486 }
65f38f15 10487 }
5bd4f169
AM		 10488 break;
10489
65f38f15
AM		 10490 case R_PPC64_COPY:
10491 case R_PPC64_GLOB_DAT:
10492 case R_PPC64_JMP_SLOT:
10493 case R_PPC64_RELATIVE:
10494 /* We shouldn't ever see these dynamic relocs in relocatable
10495 files. */
ae9a127f 10496 /* Fall through. */
65f38f15
AM		 10497
10498 case R_PPC64_PLTGOT16:
10499 case R_PPC64_PLTGOT16_DS:
10500 case R_PPC64_PLTGOT16_HA:
10501 case R_PPC64_PLTGOT16_HI:
10502 case R_PPC64_PLTGOT16_LO:
10503 case R_PPC64_PLTGOT16_LO_DS:
10504 case R_PPC64_PLTREL32:
10505 case R_PPC64_PLTREL64:
10506 /* These ones haven't been implemented yet. */
10507
10508 (*_bfd_error_handler)
d003868e
AM		 10509 (_("%B: relocation %s is not supported for symbol %s."),
10510 input_bfd,
4ce794b7 10511 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10512
10513 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10514 ret = FALSE;
5bd4f169 10515 continue;
65f38f15 10516 }
5bd4f169 10517
65f38f15
AM		 10518 /* Do any further special processing. */
10519 switch (r_type)
10520 {
10521 default:
10522 break;
10523
10524 case R_PPC64_ADDR16_HA:
10525 case R_PPC64_ADDR16_HIGHERA:
10526 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10527 case R_PPC64_GOT16_HA:
10528 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10529 case R_PPC64_PLT16_HA:
10530 case R_PPC64_TOC16_HA:
10531 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10532 case R_PPC64_TPREL16_HA:
10533 case R_PPC64_DTPREL16_HA:
10534 case R_PPC64_GOT_TLSGD16_HA:
10535 case R_PPC64_GOT_TLSLD16_HA:
10536 case R_PPC64_GOT_TPREL16_HA:
10537 case R_PPC64_GOT_DTPREL16_HA:
10538 case R_PPC64_TPREL16_HIGHER:
10539 case R_PPC64_TPREL16_HIGHERA:
10540 case R_PPC64_TPREL16_HIGHEST:
10541 case R_PPC64_TPREL16_HIGHESTA:
10542 case R_PPC64_DTPREL16_HIGHER:
10543 case R_PPC64_DTPREL16_HIGHERA:
10544 case R_PPC64_DTPREL16_HIGHEST:
10545 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10546 /* It's just possible that this symbol is a weak symbol
10547 that's not actually defined anywhere. In that case,
10548 'sec' would be NULL, and we should leave the symbol
10549 alone (it will be set to zero elsewhere in the link). */
10550 if (sec != NULL)
e515b051
AM		 10551 /* Add 0x10000 if sign bit in 0:15 is set.
10552 Bits 0:15 are not used. */
10553 addend += 0x8000;
65f38f15
AM		 10554 break;
10555
10556 case R_PPC64_ADDR16_DS:
10557 case R_PPC64_ADDR16_LO_DS:
10558 case R_PPC64_GOT16_DS:
10559 case R_PPC64_GOT16_LO_DS:
10560 case R_PPC64_PLT16_LO_DS:
10561 case R_PPC64_SECTOFF_DS:
10562 case R_PPC64_SECTOFF_LO_DS:
10563 case R_PPC64_TOC16_DS:
10564 case R_PPC64_TOC16_LO_DS:
10565 case R_PPC64_PLTGOT16_DS:
10566 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10567 case R_PPC64_GOT_TPREL16_DS:
10568 case R_PPC64_GOT_TPREL16_LO_DS:
10569 case R_PPC64_GOT_DTPREL16_DS:
10570 case R_PPC64_GOT_DTPREL16_LO_DS:
10571 case R_PPC64_TPREL16_DS:
10572 case R_PPC64_TPREL16_LO_DS:
10573 case R_PPC64_DTPREL16_DS:
10574 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10575 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10576 mask = 3;
10577 /* If this reloc is against an lq insn, then the value must be
10578 a multiple of 16. This is somewhat of a hack, but the
10579 "correct" way to do this by defining _DQ forms of all the
10580 _DS relocs bloats all reloc switches in this file. It
10581 doesn't seem to make much sense to use any of these relocs
10582 in data, so testing the insn should be safe. */
494dac0c 10583 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10584 mask = 15;
10585 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10586 {
10587 (*_bfd_error_handler)
d003868e
AM		 10588 (_("%B: error: relocation %s not a multiple of %d"),
10589 input_bfd,
4ce794b7 10590 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10591 mask + 1);
65f38f15 10592 bfd_set_error (bfd_error_bad_value);
b34976b6 10593 ret = FALSE;
65f38f15
AM		 10594 continue;
10595 }
10596 break;
5bd4f169
AM		 10597 }
10598
239e1f3a
AM		 10599 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10600 because such sections are not SEC_ALLOC and thus ld.so will
10601 not process them. */
65f38f15 10602 if (unresolved_reloc
239e1f3a 10603 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10604 && h->elf.def_dynamic))
9c07fe7c
AM		 10605 {
10606 (*_bfd_error_handler)
d003868e
AM		 10607 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10608 input_bfd,
10609 input_section,
9c07fe7c 10610 (long) rel->r_offset,
7b609f53 10611 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10612 h->elf.root.root.string);
b34976b6 10613 ret = FALSE;
9c07fe7c 10614 }
5bd4f169 10615
65f38f15 10616 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10617 input_bfd,
10618 input_section,
10619 contents,
411e1bfb 10620 rel->r_offset,
5bd4f169
AM		 10621 relocation,
10622 addend);
10623
ef60b7ff 10624 if (r != bfd_reloc_ok)
5bd4f169 10625 {
cd27b276
AM		 10626 if (sym_name == NULL)
10627 sym_name = "(null)";
10628 if (r == bfd_reloc_overflow)
5bd4f169 10629 {
cd27b276
AM		 10630 if (warned)
10631 continue;
10632 if (h != NULL
039b3fef 10633 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10634 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10635 {
10636 /* Assume this is a call protected by other code that
10637 detects the symbol is undefined. If this is the case,
10638 we can safely ignore the overflow. If not, the
10639 program is hosed anyway, and a little warning isn't
10640 going to help. */
10641
10642 continue;
10643 }
10644
ef60b7ff 10645 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10646 (info, (h ? &h->elf.root : NULL), sym_name,
10647 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10648 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10649 return FALSE;
ef60b7ff
AM		 10650 }
10651 else
10652 {
10653 (*_bfd_error_handler)
d003868e
AM		 10654 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10655 input_bfd,
10656 input_section,
7b609f53 10657 (long) rel->r_offset,
4ce794b7 10658 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10659 sym_name,
10660 (int) r);
b34976b6 10661 ret = FALSE;
ef60b7ff 10662 }
5bd4f169 10663 }
5bd4f169
AM		 10664 }
10665
645ea6a9
AM		 10666 /* If we're emitting relocations, then shortly after this function
10667 returns, reloc offsets and addends for this section will be
10668 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10669 file rather than the input. Save a copy of the relocs for
10670 opd_entry_value. */
10671 if (is_opd && info->emitrelocations)
10672 {
10673 bfd_size_type amt;
10674 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10675 rel = bfd_alloc (input_bfd, amt);
10676 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10677 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10678 if (rel == NULL)
10679 return FALSE;
10680 memcpy (rel, relocs, amt);
10681 }
5bd4f169
AM		 10682 return ret;
10683}
10684
754021d0
AM		 10685/* Adjust the value of any local symbols in opd sections. */
10686
10687static bfd_boolean
10688ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10689 const char *name ATTRIBUTE_UNUSED,
10690 Elf_Internal_Sym *elfsym,
10691 asection *input_sec,
10692 struct elf_link_hash_entry *h)
10693{
4025353c 10694 long *opd_adjust, adjust;
754021d0
AM		 10695 bfd_vma value;
10696
4025353c
AM		 10697 if (h != NULL)
10698 return TRUE;
10699
10700 opd_adjust = get_opd_info (input_sec);
10701 if (opd_adjust == NULL)
754021d0
AM		 10702 return TRUE;
10703
10704 value = elfsym->st_value - input_sec->output_offset;
10705 if (!info->relocatable)
10706 value -= input_sec->output_section->vma;
10707
3f764659 10708 adjust = opd_adjust[value / 8];
4025353c
AM		 10709 if (adjust == -1)
10710 elfsym->st_value = 0;
10711 else
10712 elfsym->st_value += adjust;
754021d0
AM		 10713 return TRUE;
10714}
10715
5bd4f169
AM		 10716/* Finish up dynamic symbol handling. We set the contents of various
10717 dynamic sections here. */
10718
b34976b6 10719static bfd_boolean
4ce794b7
AM		 10720ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10721 struct bfd_link_info *info,
10722 struct elf_link_hash_entry *h,
10723 Elf_Internal_Sym *sym)
5bd4f169 10724{
65f38f15 10725 struct ppc_link_hash_table *htab;
5bd4f169 10726 bfd *dynobj;
8387904d
AM		 10727 struct plt_entry *ent;
10728 Elf_Internal_Rela rela;
10729 bfd_byte *loc;
5bd4f169 10730
65f38f15
AM		 10731 htab = ppc_hash_table (info);
10732 dynobj = htab->elf.dynobj;
5bd4f169 10733
8387904d
AM		 10734 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10735 if (ent->plt.offset != (bfd_vma) -1)
10736 {
10737 /* This symbol has an entry in the procedure linkage
10738 table. Set it up. */
10739
10740 if (htab->plt == NULL
10741 || htab->relplt == NULL
10742 || htab->glink == NULL)
10743 abort ();
10744
10745 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10746 fill in the PLT entry. */
10747 rela.r_offset = (htab->plt->output_section->vma
10748 + htab->plt->output_offset
10749 + ent->plt.offset);
10750 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10751 rela.r_addend = ent->addend;
10752
10753 loc = htab->relplt->contents;
10754 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10755 * sizeof (Elf64_External_Rela));
10756 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10757 }
5bd4f169 10758
f5385ebf 10759 if (h->needs_copy)
5bd4f169 10760 {
5bd4f169 10761 Elf_Internal_Rela rela;
947216bf 10762 bfd_byte *loc;
5bd4f169 10763
65f38f15 10764 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10765
65f38f15
AM		 10766 if (h->dynindx == -1
10767 || (h->root.type != bfd_link_hash_defined
10768 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10769 || htab->relbss == NULL)
65f38f15 10770 abort ();
5bd4f169
AM		 10771
10772 rela.r_offset = (h->root.u.def.value
10773 + h->root.u.def.section->output_section->vma
10774 + h->root.u.def.section->output_offset);
10775 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10776 rela.r_addend = 0;
4ce794b7
AM		 10777 loc = htab->relbss->contents;
10778 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10779 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10780 }
10781
5bd4f169
AM		 10782 /* Mark some specially defined symbols as absolute. */
10783 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10784 sym->st_shndx = SHN_ABS;
10785
b34976b6 10786 return TRUE;
5bd4f169
AM		 10787}
10788
65f38f15
AM		 10789/* Used to decide how to sort relocs in an optimal manner for the
10790 dynamic linker, before writing them out. */
10791
10792static enum elf_reloc_type_class
4ce794b7 10793ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10794{
04c9666a 10795 enum elf_ppc64_reloc_type r_type;
a33d1f77 10796
4ce794b7 10797 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10798 switch (r_type)
65f38f15
AM		 10799 {
10800 case R_PPC64_RELATIVE:
10801 return reloc_class_relative;
10802 case R_PPC64_JMP_SLOT:
10803 return reloc_class_plt;
10804 case R_PPC64_COPY:
10805 return reloc_class_copy;
10806 default:
10807 return reloc_class_normal;
10808 }
10809}
10810
5bd4f169
AM		 10811/* Finish up the dynamic sections. */
10812
b34976b6 10813static bfd_boolean
4ce794b7
AM		 10814ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10815 struct bfd_link_info *info)
5bd4f169 10816{
65f38f15
AM		 10817 struct ppc_link_hash_table *htab;
10818 bfd *dynobj;
5bd4f169 10819 asection *sdyn;
5bd4f169 10820
65f38f15
AM		 10821 htab = ppc_hash_table (info);
10822 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10823 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10824
65f38f15 10825 if (htab->elf.dynamic_sections_created)
5bd4f169 10826 {
5bd4f169
AM		 10827 Elf64_External_Dyn *dyncon, *dynconend;
10828
4ce794b7 10829 if (sdyn == NULL || htab->got == NULL)
65f38f15 10830 abort ();
5bd4f169
AM		 10831
10832 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 10833 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 10834 for (; dyncon < dynconend; dyncon++)
10835 {
10836 Elf_Internal_Dyn dyn;
19397422 10837 asection *s;
5bd4f169
AM		 10838
10839 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10840
10841 switch (dyn.d_tag)
10842 {
65f38f15
AM		 10843 default:
10844 continue;
5bd4f169 10845
5d1634d7 10846 case DT_PPC64_GLINK:
4ce794b7 10847 s = htab->glink;
6348e046 10848 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 10849 /* We stupidly defined DT_PPC64_GLINK to be the start
10850 of glink rather than the first entry point, which is
10851 what ld.so needs, and now have a bigger stub to
10852 support automatic multiple TOCs. */
10853 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 10854 break;
10855
19397422
AM		 10856 case DT_PPC64_OPD:
10857 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10858 if (s == NULL)
10859 continue;
10860 dyn.d_un.d_ptr = s->vma;
19397422
AM		 10861 break;
10862
10863 case DT_PPC64_OPDSZ:
10864 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10865 if (s == NULL)
10866 continue;
eea6121a 10867 dyn.d_un.d_val = s->size;
19397422
AM		 10868 break;
10869
65f38f15 10870 case DT_PLTGOT:
4ce794b7 10871 s = htab->plt;
6348e046 10872 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 10873 break;
10874
10875 case DT_JMPREL:
4ce794b7 10876 s = htab->relplt;
6348e046 10877 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 10878 break;
5bd4f169 10879
65f38f15 10880 case DT_PLTRELSZ:
eea6121a 10881 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 10882 break;
10883
10884 case DT_RELASZ:
10885 /* Don't count procedure linkage table relocs in the
10886 overall reloc count. */
4ce794b7 10887 s = htab->relplt;
6348e046
AM		 10888 if (s == NULL)
10889 continue;
eea6121a 10890 dyn.d_un.d_val -= s->size;
6348e046
AM		 10891 break;
10892
10893 case DT_RELA:
10894 /* We may not be using the standard ELF linker script.
10895 If .rela.plt is the first .rela section, we adjust
10896 DT_RELA to not include it. */
4ce794b7 10897 s = htab->relplt;
6348e046
AM		 10898 if (s == NULL)
10899 continue;
10900 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10901 continue;
eea6121a 10902 dyn.d_un.d_ptr += s->size;
65f38f15 10903 break;
5bd4f169 10904 }
5bd4f169 10905
65f38f15 10906 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 10907 }
5bd4f169
AM		 10908 }
10909
eea6121a 10910 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 10911 {
10912 /* Fill in the first entry in the global offset table.
10913 We use it to hold the link-time TOCbase. */
10914 bfd_put_64 (output_bfd,
60ee0d4a 10915 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 10916 htab->got->contents);
5d1634d7
AM		 10917
10918 /* Set .got entry size. */
4ce794b7 10919 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 10920 }
10921
eea6121a 10922 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 10923 {
10924 /* Set .plt entry size. */
4ce794b7 10925 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 10926 = PLT_ENTRY_SIZE;
10927 }
10928
e717da7e 10929 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 10930 since we didn't add them to DYNOBJ. We know dynobj is the first
10931 bfd. */
e717da7e
AM		 10932 while ((dynobj = dynobj->link_next) != NULL)
10933 {
10934 asection *s;
7b53ace3 10935
ee75fd95 10936 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 10937 continue;
10938
e717da7e
AM		 10939 s = ppc64_elf_tdata (dynobj)->got;
10940 if (s != NULL
eea6121a 10941 && s->size != 0
e717da7e
AM		 10942 && s->output_section != bfd_abs_section_ptr
10943 && !bfd_set_section_contents (output_bfd, s->output_section,
10944 s->contents, s->output_offset,
eea6121a 10945 s->size))
e717da7e
AM		 10946 return FALSE;
10947 s = ppc64_elf_tdata (dynobj)->relgot;
10948 if (s != NULL
eea6121a 10949 && s->size != 0
e717da7e
AM		 10950 && s->output_section != bfd_abs_section_ptr
10951 && !bfd_set_section_contents (output_bfd, s->output_section,
10952 s->contents, s->output_offset,
eea6121a 10953 s->size))
e717da7e
AM		 10954 return FALSE;
10955 }
f6c52c13 10956
b34976b6 10957 return TRUE;
5bd4f169
AM		 10958}
10959
5bd4f169 10960#include "elf64-target.h"
GDB Binutils - Deliverables
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