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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
b2a8e766
AM		 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
5bd4f169 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169
AM		 27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
04c9666a 33#include "elf/ppc64.h"
5d1634d7 34#include "elf64-ppc.h"
5bd4f169 35
805fc799 36static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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;
2383};
2384
2385#define ppc64_elf_tdata(bfd) \
2386 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2387
2388#define ppc64_tlsld_got(bfd) \
2389 (&ppc64_elf_tdata (bfd)->tlsld_got)
2390
2391/* Override the generic function because we store some extras. */
2392
2393static bfd_boolean
2394ppc64_elf_mkobject (bfd *abfd)
2395{
2396 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2397 abfd->tdata.any = bfd_zalloc (abfd, amt);
2398 if (abfd->tdata.any == NULL)
2399 return FALSE;
2400 return TRUE;
2401}
2402
ee75fd95
AM		 2403/* Return 1 if target is one of ours. */
2404
7b53ace3 2405static bfd_boolean
ee75fd95 2406is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2407{
2408 extern const bfd_target bfd_elf64_powerpc_vec;
2409 extern const bfd_target bfd_elf64_powerpcle_vec;
2410
2411 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2412}
2413
feee612b
AM		 2414/* Fix bad default arch selected for a 64 bit input bfd when the
2415 default is 32 bit. */
2416
b34976b6 2417static bfd_boolean
4ce794b7 2418ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2419{
2420 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2421 {
2422 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2423
2424 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2425 {
2426 /* Relies on arch after 32 bit default being 64 bit default. */
2427 abfd->arch_info = abfd->arch_info->next;
2428 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2429 }
2430 }
b34976b6 2431 return TRUE;
feee612b
AM		 2432}
2433
d37c89e5
AM		 2434/* Support for core dump NOTE sections. */
2435
2436static bfd_boolean
2437ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2438{
eea6121a 2439 size_t offset, size;
d37c89e5
AM		 2440
2441 if (note->descsz != 504)
2442 return FALSE;
2443
2444 /* pr_cursig */
2445 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2446
2447 /* pr_pid */
2448 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2449
2450 /* pr_reg */
2451 offset = 112;
eea6121a 2452 size = 384;
d37c89e5
AM		 2453
2454 /* Make a ".reg/999" section. */
2455 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2456 size, note->descpos + offset);
d37c89e5
AM		 2457}
2458
2459static bfd_boolean
2460ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2461{
2462 if (note->descsz != 136)
2463 return FALSE;
2464
2465 elf_tdata (abfd)->core_program
2466 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2467 elf_tdata (abfd)->core_command
2468 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2469
2470 return TRUE;
2471}
2472
5bd4f169
AM		 2473/* Merge backend specific data from an object file to the output
2474 object file when linking. */
2f6d9989 2475
b34976b6 2476static bfd_boolean
4ce794b7 2477ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2478{
5bd4f169
AM		 2479 /* Check if we have the same endianess. */
2480 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2481 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2482 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2483 {
2484 const char *msg;
2485
2486 if (bfd_big_endian (ibfd))
d003868e 2487 msg = _("%B: compiled for a big endian system "
4ce794b7 2488 "and target is little endian");
5bd4f169 2489 else
d003868e 2490 msg = _("%B: compiled for a little endian system "
4ce794b7 2491 "and target is big endian");
5bd4f169 2492
d003868e 2493 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2494
2495 bfd_set_error (bfd_error_wrong_format);
b34976b6 2496 return FALSE;
5bd4f169
AM		 2497 }
2498
b34976b6 2499 return TRUE;
5bd4f169 2500}
f0abc2a1 2501
5d35169e
AM		 2502/* Add extra PPC sections. */
2503
2504static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2505{
7dcb9820
AM		 2506 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2507 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2508 { ".plt", 4, 0, SHT_NOBITS, 0 },
2509 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2511 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2512 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2513};
2514
f0abc2a1
AM		 2515struct _ppc64_elf_section_data
2516{
2517 struct bfd_elf_section_data elf;
411e1bfb
AM		 2518
2519 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2520 union
2521 {
411e1bfb 2522 /* Points to the function code section for local opd entries. */
f0abc2a1 2523 asection **func_sec;
411e1bfb 2524 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2525 long *adjust;
2526 } opd;
411e1bfb
AM		 2527
2528 /* An array for toc sections, indexed by offset/8.
2529 Specifies the relocation symbol index used at a given toc offset. */
2530 unsigned *t_symndx;
f0abc2a1
AM		 2531};
2532
2533#define ppc64_elf_section_data(sec) \
411e1bfb 2534 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2535
2536static bfd_boolean
4ce794b7 2537ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2538{
2539 struct _ppc64_elf_section_data *sdata;
2540 bfd_size_type amt = sizeof (*sdata);
2541
4ce794b7 2542 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2543 if (sdata == NULL)
2544 return FALSE;
4ce794b7 2545 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2546
2547 return _bfd_elf_new_section_hook (abfd, sec);
2548}
4025353c
AM		 2549
2550static void *
2551get_opd_info (asection * sec)
2552{
2553 if (sec != NULL
2554 && ppc64_elf_section_data (sec) != NULL
2555 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2556 return ppc64_elf_section_data (sec)->opd.adjust;
2557 return NULL;
2558}
90e3cdf2
JJ		 2559\f
2560/* Parameters for the qsort hook. */
2561static asection *synthetic_opd;
2562static bfd_boolean synthetic_relocatable;
2563
699733f6 2564/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2565
2566static int
2567compare_symbols (const void *ap, const void *bp)
2568{
2569 const asymbol *a = * (const asymbol **) ap;
2570 const asymbol *b = * (const asymbol **) bp;
2571
699733f6
AM		 2572 /* Section symbols first. */
2573 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2574 return -1;
699733f6 2575 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2576 return 1;
2577
699733f6 2578 /* then .opd symbols. */
90e3cdf2
JJ		 2579 if (a->section == synthetic_opd && b->section != synthetic_opd)
2580 return -1;
2581 if (a->section != synthetic_opd && b->section == synthetic_opd)
2582 return 1;
2583
699733f6 2584 /* then other code symbols. */
90e3cdf2
JJ		 2585 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2586 == (SEC_CODE | SEC_ALLOC)
2587 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2588 != (SEC_CODE | SEC_ALLOC))
2589 return -1;
2590
2591 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2592 != (SEC_CODE | SEC_ALLOC)
2593 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2594 == (SEC_CODE | SEC_ALLOC))
2595 return 1;
2596
2597 if (synthetic_relocatable)
2598 {
2599 if (a->section->id < b->section->id)
2600 return -1;
2601
2602 if (a->section->id > b->section->id)
2603 return 1;
2604 }
2605
2606 if (a->value + a->section->vma < b->value + b->section->vma)
2607 return -1;
2608
2609 if (a->value + a->section->vma > b->value + b->section->vma)
2610 return 1;
2611
2612 return 0;
2613}
2614
699733f6 2615/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2616
699733f6
AM		 2617static asymbol *
2618sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2619{
699733f6 2620 long mid;
90e3cdf2 2621
699733f6
AM		 2622 if (id == -1)
2623 {
2624 while (lo < hi)
2625 {
2626 mid = (lo + hi) >> 1;
2627 if (syms[mid]->value + syms[mid]->section->vma < value)
2628 lo = mid + 1;
2629 else if (syms[mid]->value + syms[mid]->section->vma > value)
2630 hi = mid;
2631 else
2632 return syms[mid];
2633 }
2634 }
2635 else
2636 {
2637 while (lo < hi)
2638 {
2639 mid = (lo + hi) >> 1;
2640 if (syms[mid]->section->id < id)
2641 lo = mid + 1;
2642 else if (syms[mid]->section->id > id)
2643 hi = mid;
2644 else if (syms[mid]->value < value)
2645 lo = mid + 1;
2646 else if (syms[mid]->value > value)
2647 hi = mid;
2648 else
2649 return syms[mid];
2650 }
2651 }
2652 return NULL;
90e3cdf2
JJ		 2653}
2654
699733f6
AM		 2655/* Create synthetic symbols, effectively restoring "dot-symbol" function
2656 entry syms. */
90e3cdf2
JJ		 2657
2658static long
a7535cf3
AM		 2659ppc64_elf_get_synthetic_symtab (bfd *abfd,
2660 long static_count, asymbol **static_syms,
2661 long dyn_count, asymbol **dyn_syms,
c9727e01 2662 asymbol **ret)
90e3cdf2
JJ		 2663{
2664 asymbol *s;
699733f6
AM		 2665 long i;
2666 long count;
90e3cdf2 2667 char *names;
a7535cf3 2668 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2669 asection *opd;
90e3cdf2 2670 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2671 asymbol **syms;
90e3cdf2
JJ		 2672
2673 *ret = NULL;
2674
2675 opd = bfd_get_section_by_name (abfd, ".opd");
2676 if (opd == NULL)
2677 return 0;
2678
a7535cf3 2679 symcount = static_count;
c9727e01 2680 if (!relocatable)
a7535cf3 2681 symcount += dyn_count;
90e3cdf2 2682 if (symcount == 0)
c9727e01 2683 return 0;
90e3cdf2 2684
a7535cf3
AM		 2685 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2686 if (syms == NULL)
2687 return 0;
2688
2689 if (!relocatable && static_count != 0 && dyn_count != 0)
2690 {
2691 /* Use both symbol tables. */
2692 memcpy (syms, static_syms, static_count * sizeof (*syms));
2693 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2694 }
2695 else if (!relocatable && static_count == 0)
2696 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2697 else
2698 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2699
90e3cdf2
JJ		 2700 synthetic_opd = opd;
2701 synthetic_relocatable = relocatable;
595da8c5 2702 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2703
c9727e01
AM		 2704 if (!relocatable && symcount > 1)
2705 {
2706 long j;
2707 /* Trim duplicate syms, since we may have merged the normal and
2708 dynamic symbols. Actually, we only care about syms that have
2709 different values, so trim any with the same value. */
2710 for (i = 1, j = 1; i < symcount; ++i)
2711 if (syms[i - 1]->value + syms[i - 1]->section->vma
2712 != syms[i]->value + syms[i]->section->vma)
2713 syms[j++] = syms[i];
2714 symcount = j;
2715 }
2716
699733f6
AM		 2717 i = 0;
2718 if (syms[i]->section == opd)
2719 ++i;
2720 codesecsym = i;
90e3cdf2 2721
699733f6
AM		 2722 for (; i < symcount; ++i)
2723 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2724 != (SEC_CODE | SEC_ALLOC))
2725 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2726 break;
2727 codesecsymend = i;
90e3cdf2 2728
699733f6
AM		 2729 for (; i < symcount; ++i)
2730 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2731 break;
2732 secsymend = i;
90e3cdf2 2733
699733f6
AM		 2734 for (; i < symcount; ++i)
2735 if (syms[i]->section != opd)
2736 break;
2737 opdsymend = i;
90e3cdf2 2738
699733f6
AM		 2739 for (; i < symcount; ++i)
2740 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2741 != (SEC_CODE | SEC_ALLOC))
2742 break;
2743 symcount = i;
2744
c9727e01 2745 count = 0;
699733f6 2746 if (opdsymend == secsymend)
c9727e01 2747 goto done;
90e3cdf2 2748
699733f6 2749 if (relocatable)
90e3cdf2 2750 {
699733f6
AM		 2751 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2752 arelent *r;
2753 size_t size;
2754 long relcount;
90e3cdf2 2755
699733f6 2756 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2
JJ		 2757 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2758
2759 if (! relcount
595da8c5 2760 || ! (*slurp_relocs) (abfd, opd, static_syms, FALSE))
c9727e01 2761 goto done;
90e3cdf2 2762
699733f6 2763 size = 0;
595da8c5 2764 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2765 {
2766 asymbol *sym;
90e3cdf2 2767
595da8c5 2768 while (r < opd->relocation + relcount
699733f6
AM		 2769 && r->address < syms[i]->value + opd->vma)
2770 ++r;
90e3cdf2 2771
595da8c5 2772 if (r == opd->relocation + relcount)
699733f6 2773 break;
90e3cdf2 2774
699733f6
AM		 2775 if (r->address != syms[i]->value + opd->vma)
2776 continue;
90e3cdf2 2777
699733f6
AM		 2778 if (r->howto->type != R_PPC64_ADDR64)
2779 continue;
90e3cdf2 2780
699733f6
AM		 2781 sym = *r->sym_ptr_ptr;
2782 if (!sym_exists_at (syms, opdsymend, symcount,
2783 sym->section->id, sym->value + r->addend))
2784 {
2785 ++count;
2786 size += sizeof (asymbol);
2787 size += strlen (syms[i]->name) + 2;
2788 }
2789 }
90e3cdf2 2790
699733f6
AM		 2791 s = *ret = bfd_malloc (size);
2792 if (s == NULL)
2793 {
c9727e01
AM		 2794 count = 0;
2795 goto done;
699733f6 2796 }
90e3cdf2 2797
699733f6 2798 names = (char *) (s + count);
90e3cdf2 2799
595da8c5 2800 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2801 {
699733f6 2802 asymbol *sym;
90e3cdf2 2803
595da8c5 2804 while (r < opd->relocation + relcount
699733f6
AM		 2805 && r->address < syms[i]->value + opd->vma)
2806 ++r;
90e3cdf2 2807
595da8c5 2808 if (r == opd->relocation + relcount)
699733f6
AM		 2809 break;
2810
2811 if (r->address != syms[i]->value + opd->vma)
2812 continue;
2813
2814 if (r->howto->type != R_PPC64_ADDR64)
2815 continue;
90e3cdf2 2816
699733f6
AM		 2817 sym = *r->sym_ptr_ptr;
2818 if (!sym_exists_at (syms, opdsymend, symcount,
2819 sym->section->id, sym->value + r->addend))
2820 {
2821 size_t len;
2822
2823 *s = *syms[i];
2824 s->section = sym->section;
2825 s->value = sym->value + r->addend;
2826 s->name = names;
2827 *names++ = '.';
2828 len = strlen (syms[i]->name);
2829 memcpy (names, syms[i]->name, len + 1);
2830 names += len + 1;
2831 s++;
2832 }
2833 }
2834 }
2835 else
90e3cdf2 2836 {
699733f6
AM		 2837 bfd_byte *contents;
2838 size_t size;
90e3cdf2 2839
699733f6
AM		 2840 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2841 {
2842 if (contents)
c9727e01
AM		 2843 {
2844 free_contents_and_exit:
2845 free (contents);
2846 }
2847 goto done;
699733f6 2848 }
90e3cdf2 2849
699733f6
AM		 2850 size = 0;
2851 for (i = secsymend; i < opdsymend; ++i)
2852 {
2853 bfd_vma ent;
90e3cdf2 2854
699733f6
AM		 2855 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2856 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2857 {
2858 ++count;
2859 size += sizeof (asymbol);
2860 size += strlen (syms[i]->name) + 2;
2861 }
2862 }
90e3cdf2 2863
699733f6
AM		 2864 s = *ret = bfd_malloc (size);
2865 if (s == NULL)
2866 {
c9727e01
AM		 2867 count = 0;
2868 goto free_contents_and_exit;
699733f6 2869 }
90e3cdf2 2870
699733f6 2871 names = (char *) (s + count);
90e3cdf2 2872
699733f6 2873 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2874 {
699733f6 2875 bfd_vma ent;
90e3cdf2 2876
699733f6
AM		 2877 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2878 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2879 {
c9727e01 2880 long lo, hi;
699733f6 2881 size_t len;
c9727e01 2882 asection *sec = abfd->sections;
90e3cdf2 2883
699733f6
AM		 2884 *s = *syms[i];
2885 lo = codesecsym;
2886 hi = codesecsymend;
2887 while (lo < hi)
2888 {
c9727e01 2889 long mid = (lo + hi) >> 1;
699733f6
AM		 2890 if (syms[mid]->section->vma < ent)
2891 lo = mid + 1;
2892 else if (syms[mid]->section->vma > ent)
2893 hi = mid;
2894 else
c9727e01
AM		 2895 {
2896 sec = syms[mid]->section;
2897 break;
2898 }
699733f6
AM		 2899 }
2900
c9727e01 2901 if (lo >= hi && lo > codesecsym)
699733f6 2902 sec = syms[lo - 1]->section;
699733f6
AM		 2903
2904 for (; sec != NULL; sec = sec->next)
2905 {
2906 if (sec->vma > ent)
2907 break;
2908 if ((sec->flags & SEC_ALLOC) == 0
2909 || (sec->flags & SEC_LOAD) == 0)
2910 break;
2911 if ((sec->flags & SEC_CODE) != 0)
2912 s->section = sec;
2913 }
2914 s->value = ent - s->section->vma;
2915 s->name = names;
2916 *names++ = '.';
2917 len = strlen (syms[i]->name);
2918 memcpy (names, syms[i]->name, len + 1);
2919 names += len + 1;
2920 s++;
90e3cdf2 2921 }
90e3cdf2 2922 }
699733f6 2923 free (contents);
90e3cdf2
JJ		 2924 }
2925
c9727e01 2926 done:
a7535cf3 2927 free (syms);
90e3cdf2
JJ		 2928 return count;
2929}
5bd4f169 2930\f
65f38f15
AM		 2931/* The following functions are specific to the ELF linker, while
2932 functions above are used generally. Those named ppc64_elf_* are
2933 called by the main ELF linker code. They appear in this file more
2934 or less in the order in which they are called. eg.
2935 ppc64_elf_check_relocs is called early in the link process,
2936 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2937 called.
2938
2939 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2940 functions have both a function code symbol and a function descriptor
2941 symbol. A call to foo in a relocatable object file looks like:
2942
2943 . .text
2944 . x:
2945 . bl .foo
2946 . nop
2947
2948 The function definition in another object file might be:
2949
2950 . .section .opd
2951 . foo: .quad .foo
2952 . .quad .TOC.@tocbase
2953 . .quad 0
2954 .
2955 . .text
2956 . .foo: blr
2957
2958 When the linker resolves the call during a static link, the branch
2959 unsurprisingly just goes to .foo and the .opd information is unused.
2960 If the function definition is in a shared library, things are a little
2961 different: The call goes via a plt call stub, the opd information gets
2962 copied to the plt, and the linker patches the nop.
2963
2964 . x:
2965 . bl .foo_stub
2966 . ld 2,40(1)
2967 .
2968 .
2969 . .foo_stub:
2970 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 2971 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 2972 . std 2,40(1) # this is the general idea
2973 . ld 11,0(12)
2974 . ld 2,8(12)
2975 . mtctr 11
2976 . ld 11,16(12)
2977 . bctr
2978 .
2979 . .section .plt
2980 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2981
2982 The "reloc ()" notation is supposed to indicate that the linker emits
2983 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2984 copying.
2985
2986 What are the difficulties here? Well, firstly, the relocations
2987 examined by the linker in check_relocs are against the function code
2988 sym .foo, while the dynamic relocation in the plt is emitted against
2989 the function descriptor symbol, foo. Somewhere along the line, we need
2990 to carefully copy dynamic link information from one symbol to the other.
2991 Secondly, the generic part of the elf linker will make .foo a dynamic
2992 symbol as is normal for most other backends. We need foo dynamic
2993 instead, at least for an application final link. However, when
2994 creating a shared library containing foo, we need to have both symbols
2995 dynamic so that references to .foo are satisfied during the early
2996 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 2997 definition from some other object, eg. a static library.
2998
2999 Update: As of August 2004, we support a new convention. Function
3000 calls may use the function descriptor symbol, ie. "bl foo". This
3001 behaves exactly as "bl .foo". */
65f38f15
AM		 3002
3003/* The linker needs to keep track of the number of relocs that it
3004 decides to copy as dynamic relocs in check_relocs for each symbol.
3005 This is so that it can later discard them if they are found to be
3006 unnecessary. We store the information in a field extending the
3007 regular ELF linker hash table. */
3008
3009struct ppc_dyn_relocs
3010{
3011 struct ppc_dyn_relocs *next;
3012
3013 /* The input section of the reloc. */
3014 asection *sec;
3015
3016 /* Total number of relocs copied for the input section. */
3017 bfd_size_type count;
3018
3019 /* Number of pc-relative relocs copied for the input section. */
3020 bfd_size_type pc_count;
3021};
3022
411e1bfb
AM		 3023/* Track GOT entries needed for a given symbol. We might need more
3024 than one got entry per symbol. */
3025struct got_entry
3026{
3027 struct got_entry *next;
3028
e7b938ca 3029 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3030 bfd_vma addend;
3031
e717da7e
AM		 3032 /* Unlike other ELF targets, we use separate GOT entries for the same
3033 symbol referenced from different input files. This is to support
3034 automatic multiple TOC/GOT sections, where the TOC base can vary
3035 from one input file to another.
3036
3037 Point to the BFD owning this GOT entry. */
3038 bfd *owner;
3039
3040 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3041 TLS_TPREL or TLS_DTPREL for tls entries. */
3042 char tls_type;
3043
e7b938ca 3044 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3045 union
3046 {
3047 bfd_signed_vma refcount;
3048 bfd_vma offset;
3049 } got;
411e1bfb
AM		 3050};
3051
3052/* The same for PLT. */
3053struct plt_entry
3054{
3055 struct plt_entry *next;
3056
3057 bfd_vma addend;
3058
3059 union
3060 {
3061 bfd_signed_vma refcount;
3062 bfd_vma offset;
3063 } plt;
3064};
3065
65f38f15 3066/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3067 selects those that must be copied when linking a shared library,
3068 even when the symbol is local. */
65f38f15 3069
411e1bfb 3070#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3071 ((RTYPE) != R_PPC64_REL32 \
3072 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3073 && (RTYPE) != R_PPC64_REL30)
65f38f15 3074
f4656909
AM		 3075/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3076 copying dynamic variables from a shared lib into an app's dynbss
3077 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3078 shared lib. With code that gcc generates, it's vital that this be
3079 enabled; In the PowerPC64 ABI, the address of a function is actually
3080 the address of a function descriptor, which resides in the .opd
3081 section. gcc uses the descriptor directly rather than going via the
3082 GOT as some other ABI's do, which means that initialized function
3083 pointers must reference the descriptor. Thus, a function pointer
3084 initialized to the address of a function in a shared library will
3085 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3086 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3087 presents a problem as a plt entry for that function is also
3088 initialized from the function descriptor symbol and the copy reloc
3089 may not be initialized first. */
a23b6845 3090#define ELIMINATE_COPY_RELOCS 1
f4656909 3091
721956f4
AM		 3092/* Section name for stubs is the associated section name plus this
3093 string. */
3094#define STUB_SUFFIX ".stub"
3095
3096/* Linker stubs.
3097 ppc_stub_long_branch:
3098 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3099 destination, but a 24 bit branch in a stub section will reach.
3100 . b dest
3101
3102 ppc_stub_plt_branch:
3103 Similar to the above, but a 24 bit branch in the stub section won't
3104 reach its destination.
87e226ce
AM		 3105 . addis %r12,%r2,xxx@toc@ha
3106 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3107 . mtctr %r11
3108 . bctr
3109
3110 ppc_stub_plt_call:
2c66dc6c
AM		 3111 Used to call a function in a shared library. If it so happens that
3112 the plt entry referenced crosses a 64k boundary, then an extra
3113 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3114 xxx+16 as appropriate.
87e226ce 3115 . addis %r12,%r2,xxx@toc@ha
721956f4 3116 . std %r2,40(%r1)
87e226ce
AM		 3117 . ld %r11,xxx+0@toc@l(%r12)
3118 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3119 . mtctr %r11
87e226ce 3120 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3121 . bctr
ad8e1ba5
AM		 3122
3123 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3124 code to adjust the value and save r2 to support multiple toc sections.
3125 A ppc_stub_long_branch with an r2 offset looks like:
3126 . std %r2,40(%r1)
3127 . addis %r2,%r2,off@ha
3128 . addi %r2,%r2,off@l
3129 . b dest
3130
3131 A ppc_stub_plt_branch with an r2 offset looks like:
3132 . std %r2,40(%r1)
3133 . addis %r12,%r2,xxx@toc@ha
3134 . ld %r11,xxx@toc@l(%r12)
3135 . addis %r2,%r2,off@ha
3136 . addi %r2,%r2,off@l
3137 . mtctr %r11
3138 . bctr
721956f4
AM		 3139*/
3140
3141enum ppc_stub_type {
3142 ppc_stub_none,
3143 ppc_stub_long_branch,
ad8e1ba5 3144 ppc_stub_long_branch_r2off,
721956f4 3145 ppc_stub_plt_branch,
ad8e1ba5 3146 ppc_stub_plt_branch_r2off,
721956f4
AM		 3147 ppc_stub_plt_call
3148};
3149
3150struct ppc_stub_hash_entry {
3151
3152 /* Base hash table entry structure. */
3153 struct bfd_hash_entry root;
3154
ad8e1ba5
AM		 3155 enum ppc_stub_type stub_type;
3156
721956f4
AM		 3157 /* The stub section. */
3158 asection *stub_sec;
3159
3160 /* Offset within stub_sec of the beginning of this stub. */
3161 bfd_vma stub_offset;
3162
3163 /* Given the symbol's value and its section we can determine its final
3164 value when building the stubs (so the stub knows where to jump. */
3165 bfd_vma target_value;
3166 asection *target_section;
3167
721956f4
AM		 3168 /* The symbol table entry, if any, that this was derived from. */
3169 struct ppc_link_hash_entry *h;
3170
411e1bfb
AM		 3171 /* And the reloc addend that this was derived from. */
3172 bfd_vma addend;
3173
721956f4
AM		 3174 /* Where this stub is being called from, or, in the case of combined
3175 stub sections, the first input section in the group. */
3176 asection *id_sec;
3177};
3178
3179struct ppc_branch_hash_entry {
3180
3181 /* Base hash table entry structure. */
3182 struct bfd_hash_entry root;
3183
3184 /* Offset within .branch_lt. */
3185 unsigned int offset;
3186
3187 /* Generation marker. */
3188 unsigned int iter;
3189};
65f38f15
AM		 3190
3191struct ppc_link_hash_entry
3192{
3193 struct elf_link_hash_entry elf;
3194
721956f4
AM		 3195 /* A pointer to the most recently used stub hash entry against this
3196 symbol. */
3197 struct ppc_stub_hash_entry *stub_cache;
3198
65f38f15
AM		 3199 /* Track dynamic relocs copied for this symbol. */
3200 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3201
721956f4 3202 /* Link between function code and descriptor symbols. */
34814b9f 3203 struct ppc_link_hash_entry *oh;
721956f4 3204
e86ce104
AM		 3205 /* Flag function code and descriptor symbols. */
3206 unsigned int is_func:1;
3207 unsigned int is_func_descriptor:1;
411e1bfb 3208
c5614fa4
AM		 3209 /* Whether global opd/toc sym has been adjusted or not.
3210 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3211 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3212 unsigned int adjust_done:1;
3213
99877b66
AM		 3214 /* Set if we twiddled this symbol to weak at some stage. */
3215 unsigned int was_undefined:1;
3216
411e1bfb 3217 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3218 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3219 corresponding relocs are encountered during check_relocs.
3220 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3221 indicate the corresponding GOT entry type is not needed.
3222 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3223 a TPREL one. We use a separate flag rather than setting TPREL
3224 just for convenience in distinguishing the two cases. */
3225#define TLS_GD 1 /* GD reloc. */
3226#define TLS_LD 2 /* LD reloc. */
3227#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3228#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3229#define TLS_TLS 16 /* Any TLS reloc. */
3230#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3231#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3232 char tls_mask;
65f38f15
AM		 3233};
3234
3235/* ppc64 ELF linker hash table. */
3236
3237struct ppc_link_hash_table
3238{
3239 struct elf_link_hash_table elf;
3240
721956f4
AM		 3241 /* The stub hash table. */
3242 struct bfd_hash_table stub_hash_table;
3243
3244 /* Another hash table for plt_branch stubs. */
3245 struct bfd_hash_table branch_hash_table;
3246
3247 /* Linker stub bfd. */
3248 bfd *stub_bfd;
3249
3250 /* Linker call-backs. */
4ce794b7
AM		 3251 asection * (*add_stub_section) (const char *, asection *);
3252 void (*layout_sections_again) (void);
721956f4
AM		 3253
3254 /* Array to keep track of which stub sections have been created, and
3255 information on stub grouping. */
3256 struct map_stub {
3257 /* This is the section to which stubs in the group will be attached. */
3258 asection *link_sec;
3259 /* The stub section. */
3260 asection *stub_sec;
ad8e1ba5
AM		 3261 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3262 bfd_vma toc_off;
721956f4
AM		 3263 } *stub_group;
3264
ad8e1ba5
AM		 3265 /* Temp used when calculating TOC pointers. */
3266 bfd_vma toc_curr;
3267
8f3bab57
AM		 3268 /* Highest input section id. */
3269 int top_id;
3270
734b6cf9
AM		 3271 /* Highest output section index. */
3272 int top_index;
3273
3274 /* List of input sections for each output section. */
3275 asection **input_list;
721956f4 3276
65f38f15 3277 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3278 asection *got;
4ce794b7
AM		 3279 asection *plt;
3280 asection *relplt;
3281 asection *dynbss;
3282 asection *relbss;
3283 asection *glink;
82bd7b59 3284 asection *sfpr;
4ce794b7
AM		 3285 asection *brlt;
3286 asection *relbrlt;
ec338859 3287
8387904d
AM		 3288 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3289 struct ppc_link_hash_entry *tls_get_addr;
3290 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3291
9b5ecbd0
AM		 3292 /* Statistics. */
3293 unsigned long stub_count[ppc_stub_plt_call];
3294
ee75fd95
AM		 3295 /* Number of stubs against global syms. */
3296 unsigned long stub_globals;
3297
ad8e1ba5 3298 /* Set if we should emit symbols for stubs. */
99877b66 3299 unsigned int emit_stub_syms:1;
ad8e1ba5 3300
5d1634d7 3301 /* Set on error. */
99877b66 3302 unsigned int stub_error:1;
721956f4
AM		 3303
3304 /* Flag set when small branches are detected. Used to
3305 select suitable defaults for the stub group size. */
99877b66
AM		 3306 unsigned int has_14bit_branch:1;
3307
3308 /* Temp used by ppc64_elf_check_directives. */
3309 unsigned int twiddled_syms:1;
721956f4
AM		 3310
3311 /* Incremented every time we size stubs. */
3312 unsigned int stub_iteration;
5d1634d7 3313
ec338859
AM		 3314 /* Small local sym to section mapping cache. */
3315 struct sym_sec_cache sym_sec;
65f38f15
AM		 3316};
3317
3318/* Get the ppc64 ELF linker hash table from a link_info structure. */
3319
3320#define ppc_hash_table(p) \
3321 ((struct ppc_link_hash_table *) ((p)->hash))
3322
721956f4
AM		 3323#define ppc_stub_hash_lookup(table, string, create, copy) \
3324 ((struct ppc_stub_hash_entry *) \
3325 bfd_hash_lookup ((table), (string), (create), (copy)))
3326
3327#define ppc_branch_hash_lookup(table, string, create, copy) \
3328 ((struct ppc_branch_hash_entry *) \
3329 bfd_hash_lookup ((table), (string), (create), (copy)))
3330
3331/* Create an entry in the stub hash table. */
3332
3333static struct bfd_hash_entry *
4ce794b7
AM		 3334stub_hash_newfunc (struct bfd_hash_entry *entry,
3335 struct bfd_hash_table *table,
3336 const char *string)
721956f4
AM		 3337{
3338 /* Allocate the structure if it has not already been allocated by a
3339 subclass. */
3340 if (entry == NULL)
3341 {
3342 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3343 if (entry == NULL)
3344 return entry;
3345 }
3346
3347 /* Call the allocation method of the superclass. */
3348 entry = bfd_hash_newfunc (entry, table, string);
3349 if (entry != NULL)
3350 {
3351 struct ppc_stub_hash_entry *eh;
3352
3353 /* Initialize the local fields. */
3354 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3355 eh->stub_type = ppc_stub_none;
721956f4
AM		 3356 eh->stub_sec = NULL;
3357 eh->stub_offset = 0;
3358 eh->target_value = 0;
3359 eh->target_section = NULL;
721956f4
AM		 3360 eh->h = NULL;
3361 eh->id_sec = NULL;
3362 }
3363
3364 return entry;
3365}
3366
3367/* Create an entry in the branch hash table. */
3368
3369static struct bfd_hash_entry *
4ce794b7
AM		 3370branch_hash_newfunc (struct bfd_hash_entry *entry,
3371 struct bfd_hash_table *table,
3372 const char *string)
721956f4
AM		 3373{
3374 /* Allocate the structure if it has not already been allocated by a
3375 subclass. */
3376 if (entry == NULL)
3377 {
3378 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3379 if (entry == NULL)
3380 return entry;
3381 }
3382
3383 /* Call the allocation method of the superclass. */
3384 entry = bfd_hash_newfunc (entry, table, string);
3385 if (entry != NULL)
3386 {
3387 struct ppc_branch_hash_entry *eh;
3388
3389 /* Initialize the local fields. */
3390 eh = (struct ppc_branch_hash_entry *) entry;
3391 eh->offset = 0;
3392 eh->iter = 0;
3393 }
3394
3395 return entry;
3396}
3397
65f38f15
AM		 3398/* Create an entry in a ppc64 ELF linker hash table. */
3399
3400static struct bfd_hash_entry *
4ce794b7
AM		 3401link_hash_newfunc (struct bfd_hash_entry *entry,
3402 struct bfd_hash_table *table,
3403 const char *string)
65f38f15
AM		 3404{
3405 /* Allocate the structure if it has not already been allocated by a
3406 subclass. */
3407 if (entry == NULL)
3408 {
3409 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3410 if (entry == NULL)
3411 return entry;
3412 }
3413
3414 /* Call the allocation method of the superclass. */
3415 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3416 if (entry != NULL)
3417 {
3418 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3419
721956f4 3420 eh->stub_cache = NULL;
65f38f15 3421 eh->dyn_relocs = NULL;
721956f4 3422 eh->oh = NULL;
e86ce104
AM		 3423 eh->is_func = 0;
3424 eh->is_func_descriptor = 0;
754021d0 3425 eh->adjust_done = 0;
99877b66 3426 eh->was_undefined = 0;
e7b938ca 3427 eh->tls_mask = 0;
65f38f15
AM		 3428 }
3429
3430 return entry;
3431}
3432
3433/* Create a ppc64 ELF linker hash table. */
3434
3435static struct bfd_link_hash_table *
4ce794b7 3436ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3437{
3438 struct ppc_link_hash_table *htab;
3439 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3440
4ce794b7 3441 htab = bfd_zmalloc (amt);
65f38f15
AM		 3442 if (htab == NULL)
3443 return NULL;
3444
3445 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3446 {
e2d34d7d 3447 free (htab);
65f38f15
AM		 3448 return NULL;
3449 }
3450
721956f4
AM		 3451 /* Init the stub hash table too. */
3452 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3453 return NULL;
3454
3455 /* And the branch hash table. */
3456 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3457 return NULL;
3458
3254fd24
AM		 3459 /* Initializing two fields of the union is just cosmetic. We really
3460 only care about glist, but when compiled on a 32-bit host the
3461 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3462 debugger inspection of these fields look nicer. */
3463 htab->elf.init_refcount.refcount = 0;
3464 htab->elf.init_refcount.glist = NULL;
3465 htab->elf.init_offset.offset = 0;
3466 htab->elf.init_offset.glist = NULL;
3467
65f38f15
AM		 3468 return &htab->elf.root;
3469}
3470
721956f4
AM		 3471/* Free the derived linker hash table. */
3472
3473static void
4ce794b7 3474ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3475{
3476 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3477
3478 bfd_hash_table_free (&ret->stub_hash_table);
3479 bfd_hash_table_free (&ret->branch_hash_table);
3480 _bfd_generic_link_hash_table_free (hash);
3481}
3482
e717da7e
AM		 3483/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3484
3485void
3486ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3487{
3488 struct ppc_link_hash_table *htab;
3489
3490 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3491
3492/* Always hook our dynamic sections into the first bfd, which is the
3493 linker created stub bfd. This ensures that the GOT header is at
3494 the start of the output TOC section. */
3495 htab = ppc_hash_table (info);
3496 htab->stub_bfd = abfd;
3497 htab->elf.dynobj = abfd;
3498}
3499
721956f4
AM		 3500/* Build a name for an entry in the stub hash table. */
3501
3502static char *
4ce794b7
AM		 3503ppc_stub_name (const asection *input_section,
3504 const asection *sym_sec,
3505 const struct ppc_link_hash_entry *h,
3506 const Elf_Internal_Rela *rel)
721956f4
AM		 3507{
3508 char *stub_name;
3509 bfd_size_type len;
3510
3511 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3512 offsets from a sym as a branch target? In fact, we could
3513 probably assume the addend is always zero. */
3514 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3515
3516 if (h)
3517 {
3518 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3519 stub_name = bfd_malloc (len);
3520 if (stub_name != NULL)
3521 {
97b639ba 3522 sprintf (stub_name, "%08x.%s+%x",
721956f4
AM		 3523 input_section->id & 0xffffffff,
3524 h->elf.root.root.string,
3525 (int) rel->r_addend & 0xffffffff);
3526 }
3527 }
3528 else
3529 {
ad8e1ba5 3530 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4
AM		 3531 stub_name = bfd_malloc (len);
3532 if (stub_name != NULL)
3533 {
97b639ba 3534 sprintf (stub_name, "%08x.%x:%x+%x",
721956f4
AM		 3535 input_section->id & 0xffffffff,
3536 sym_sec->id & 0xffffffff,
3537 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3538 (int) rel->r_addend & 0xffffffff);
3539 }
3540 }
ee75fd95
AM		 3541 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3542 stub_name[len - 2] = 0;
721956f4
AM		 3543 return stub_name;
3544}
3545
3546/* Look up an entry in the stub hash. Stub entries are cached because
3547 creating the stub name takes a bit of time. */
3548
3549static struct ppc_stub_hash_entry *
4ce794b7
AM		 3550ppc_get_stub_entry (const asection *input_section,
3551 const asection *sym_sec,
039b3fef 3552 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3553 const Elf_Internal_Rela *rel,
3554 struct ppc_link_hash_table *htab)
721956f4
AM		 3555{
3556 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3557 const asection *id_sec;
3558
3559 /* If this input section is part of a group of sections sharing one
3560 stub section, then use the id of the first section in the group.
3561 Stub names need to include a section id, as there may well be
3562 more than one stub used to reach say, printf, and we need to
3563 distinguish between them. */
3564 id_sec = htab->stub_group[input_section->id].link_sec;
3565
3566 if (h != NULL && h->stub_cache != NULL
3567 && h->stub_cache->h == h
3568 && h->stub_cache->id_sec == id_sec)
3569 {
3570 stub_entry = h->stub_cache;
3571 }
3572 else
3573 {
3574 char *stub_name;
3575
3576 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3577 if (stub_name == NULL)
3578 return NULL;
3579
3580 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3581 stub_name, FALSE, FALSE);
721956f4
AM		 3582 if (h != NULL)
3583 h->stub_cache = stub_entry;
3584
3585 free (stub_name);
3586 }
3587
3588 return stub_entry;
3589}
3590
3591/* Add a new stub entry to the stub hash. Not all fields of the new
3592 stub entry are initialised. */
3593
3594static struct ppc_stub_hash_entry *
4ce794b7
AM		 3595ppc_add_stub (const char *stub_name,
3596 asection *section,
3597 struct ppc_link_hash_table *htab)
721956f4
AM		 3598{
3599 asection *link_sec;
3600 asection *stub_sec;
3601 struct ppc_stub_hash_entry *stub_entry;
3602
3603 link_sec = htab->stub_group[section->id].link_sec;
3604 stub_sec = htab->stub_group[section->id].stub_sec;
3605 if (stub_sec == NULL)
3606 {
3607 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3608 if (stub_sec == NULL)
3609 {
d4c88bbb 3610 size_t namelen;
721956f4
AM		 3611 bfd_size_type len;
3612 char *s_name;
3613
d4c88bbb
AM		 3614 namelen = strlen (link_sec->name);
3615 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3616 s_name = bfd_alloc (htab->stub_bfd, len);
3617 if (s_name == NULL)
3618 return NULL;
3619
d4c88bbb
AM		 3620 memcpy (s_name, link_sec->name, namelen);
3621 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3622 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3623 if (stub_sec == NULL)
3624 return NULL;
3625 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3626 }
3627 htab->stub_group[section->id].stub_sec = stub_sec;
3628 }
3629
3630 /* Enter this entry into the linker stub hash table. */
3631 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3632 TRUE, FALSE);
721956f4
AM		 3633 if (stub_entry == NULL)
3634 {
d003868e
AM		 3635 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3636 section->owner, stub_name);
721956f4
AM		 3637 return NULL;
3638 }
3639
3640 stub_entry->stub_sec = stub_sec;
3641 stub_entry->stub_offset = 0;
3642 stub_entry->id_sec = link_sec;
3643 return stub_entry;
3644}
3645
82bd7b59
AM		 3646/* Create sections for linker generated code. */
3647
b34976b6 3648static bfd_boolean
4ce794b7 3649create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3650{
3651 struct ppc_link_hash_table *htab;
3652 flagword flags;
3653
3654 htab = ppc_hash_table (info);
3655
3656 /* Create .sfpr for code to save and restore fp regs. */
3657 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3658 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 3659 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 3660 if (htab->sfpr == NULL
3661 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3662 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3663 return FALSE;
82bd7b59 3664
721956f4 3665 /* Create .glink for lazy dynamic linking support. */
4ce794b7
AM		 3666 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3667 if (htab->glink == NULL
3668 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3669 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3670 return FALSE;
82bd7b59 3671
721956f4
AM		 3672 /* Create .branch_lt for plt_branch stubs. */
3673 flags = (SEC_ALLOC | SEC_LOAD
3674 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3675 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3676 if (htab->brlt == NULL
3677 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3678 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3679 return FALSE;
721956f4 3680
ee75fd95 3681 if (info->shared || info->emitrelocations)
721956f4
AM		 3682 {
3683 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3684 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3685 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3686 if (!htab->relbrlt
3687 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3688 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3689 return FALSE;
721956f4 3690 }
b34976b6 3691 return TRUE;
82bd7b59
AM		 3692}
3693
e717da7e
AM		 3694/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3695 not already done. */
65f38f15 3696
b34976b6 3697static bfd_boolean
e717da7e 3698create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3699{
e717da7e
AM		 3700 asection *got, *relgot;
3701 flagword flags;
3702 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3703
4ce794b7 3704 if (!htab->got)
e717da7e
AM		 3705 {
3706 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3707 return FALSE;
3708
3709 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3710 if (!htab->got)
3711 abort ();
3712 }
3713
3714 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3715 | SEC_LINKER_CREATED);
3716
3717 got = bfd_make_section (abfd, ".got");
3718 if (!got
3719 || !bfd_set_section_flags (abfd, got, flags)
3720 || !bfd_set_section_alignment (abfd, got, 3))
3721 return FALSE;
65f38f15 3722
e717da7e
AM		 3723 relgot = bfd_make_section (abfd, ".rela.got");
3724 if (!relgot
3725 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3726 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3727 return FALSE;
e717da7e
AM		 3728
3729 ppc64_elf_tdata (abfd)->got = got;
3730 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3731 return TRUE;
65f38f15 3732}
5bd4f169 3733
82bd7b59 3734/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3735
b34976b6 3736static bfd_boolean
4ce794b7 3737ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3738{
65f38f15 3739 struct ppc_link_hash_table *htab;
5bd4f169 3740
65f38f15 3741 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3742 return FALSE;
65f38f15 3743
e717da7e
AM		 3744 htab = ppc_hash_table (info);
3745 if (!htab->got)
3746 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3747 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3748 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3749 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3750 if (!info->shared)
4ce794b7 3751 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3752
e717da7e 3753 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3754 || (!info->shared && !htab->relbss))
65f38f15
AM		 3755 abort ();
3756
b34976b6 3757 return TRUE;
5bd4f169
AM		 3758}
3759
65f38f15
AM		 3760/* Copy the extra info we tack onto an elf_link_hash_entry. */
3761
3762static void
9c5bfbb7
AM		 3763ppc64_elf_copy_indirect_symbol
3764 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3765 struct elf_link_hash_entry *dir,
3766 struct elf_link_hash_entry *ind)
65f38f15
AM		 3767{
3768 struct ppc_link_hash_entry *edir, *eind;
3769
3770 edir = (struct ppc_link_hash_entry *) dir;
3771 eind = (struct ppc_link_hash_entry *) ind;
3772
411e1bfb 3773 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3774 if (eind->dyn_relocs != NULL)
65f38f15 3775 {
bbd7ec4a
AM		 3776 if (edir->dyn_relocs != NULL)
3777 {
3778 struct ppc_dyn_relocs **pp;
3779 struct ppc_dyn_relocs *p;
3780
411e1bfb 3781 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3782 abort ();
3783
3784 /* Add reloc counts against the weak sym to the strong sym
3785 list. Merge any entries against the same section. */
3786 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3787 {
3788 struct ppc_dyn_relocs *q;
3789
3790 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3791 if (q->sec == p->sec)
3792 {
3793 q->pc_count += p->pc_count;
3794 q->count += p->count;
3795 *pp = p->next;
3796 break;
3797 }
3798 if (q == NULL)
3799 pp = &p->next;
3800 }
3801 *pp = edir->dyn_relocs;
3802 }
3803
65f38f15
AM		 3804 edir->dyn_relocs = eind->dyn_relocs;
3805 eind->dyn_relocs = NULL;
3806 }
65f38f15 3807
6349e628
AM		 3808 edir->is_func |= eind->is_func;
3809 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3810 edir->tls_mask |= eind->tls_mask;
6349e628 3811
81848ca0 3812 /* If called to transfer flags for a weakdef during processing
f5385ebf 3813 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3814 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3815 if (!(ELIMINATE_COPY_RELOCS
3816 && eind->elf.root.type != bfd_link_hash_indirect
3817 && edir->elf.dynamic_adjusted))
3818 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3819
f5385ebf
AM		 3820 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3821 edir->elf.ref_regular |= eind->elf.ref_regular;
3822 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3823 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3824
3825 /* If we were called to copy over info for a weak sym, that's all. */
3826 if (eind->elf.root.type != bfd_link_hash_indirect)
3827 return;
3828
81848ca0
AM		 3829 /* Copy over got entries that we may have already seen to the
3830 symbol which just became indirect. */
411e1bfb
AM		 3831 if (eind->elf.got.glist != NULL)
3832 {
3833 if (edir->elf.got.glist != NULL)
3834 {
3835 struct got_entry **entp;
3836 struct got_entry *ent;
3837
3838 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3839 {
3840 struct got_entry *dent;
3841
3842 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3843 if (dent->addend == ent->addend
e717da7e 3844 && dent->owner == ent->owner
411e1bfb
AM		 3845 && dent->tls_type == ent->tls_type)
3846 {
3847 dent->got.refcount += ent->got.refcount;
3848 *entp = ent->next;
3849 break;
3850 }
3851 if (dent == NULL)
3852 entp = &ent->next;
3853 }
3854 *entp = edir->elf.got.glist;
3855 }
3856
3857 edir->elf.got.glist = eind->elf.got.glist;
3858 eind->elf.got.glist = NULL;
3859 }
3860
3861 /* And plt entries. */
3862 if (eind->elf.plt.plist != NULL)
3863 {
3864 if (edir->elf.plt.plist != NULL)
3865 {
3866 struct plt_entry **entp;
3867 struct plt_entry *ent;
3868
3869 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3870 {
3871 struct plt_entry *dent;
3872
3873 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3874 if (dent->addend == ent->addend)
3875 {
3876 dent->plt.refcount += ent->plt.refcount;
3877 *entp = ent->next;
3878 break;
3879 }
3880 if (dent == NULL)
3881 entp = &ent->next;
3882 }
3883 *entp = edir->elf.plt.plist;
3884 }
3885
3886 edir->elf.plt.plist = eind->elf.plt.plist;
3887 eind->elf.plt.plist = NULL;
3888 }
3889
411e1bfb
AM		 3890 if (edir->elf.dynindx == -1)
3891 {
3892 edir->elf.dynindx = eind->elf.dynindx;
3893 edir->elf.dynstr_index = eind->elf.dynstr_index;
3894 eind->elf.dynindx = -1;
3895 eind->elf.dynstr_index = 0;
3896 }
3897 else
3898 BFD_ASSERT (eind->elf.dynindx == -1);
3899}
3900
8387904d
AM		 3901/* Find the function descriptor hash entry from the given function code
3902 hash entry FH. Link the entries via their OH fields. */
3903
3904static struct ppc_link_hash_entry *
3905get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3906{
3907 struct ppc_link_hash_entry *fdh = fh->oh;
3908
3909 if (fdh == NULL)
3910 {
3911 const char *fd_name = fh->elf.root.root.string + 1;
3912
3913 fdh = (struct ppc_link_hash_entry *)
3914 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3915 if (fdh != NULL)
3916 {
3917 fdh->is_func_descriptor = 1;
3918 fdh->oh = fh;
3919 fh->is_func = 1;
3920 fh->oh = fdh;
3921 }
3922 }
3923
3924 return fdh;
3925}
3926
3927/* Hacks to support old ABI code.
3928 When making function calls, old ABI code references function entry
3929 points (dot symbols), while new ABI code references the function
3930 descriptor symbol. We need to make any combination of reference and
3931 definition work together, without breaking archive linking.
3932
3933 For a defined function "foo" and an undefined call to "bar":
3934 An old object defines "foo" and ".foo", references ".bar" (possibly
3935 "bar" too).
3936 A new object defines "foo" and references "bar".
3937
3938 A new object thus has no problem with its undefined symbols being
3939 satisfied by definitions in an old object. On the other hand, the
3940 old object won't have ".bar" satisfied by a new object. */
3941
3942/* Fix function descriptor symbols defined in .opd sections to be
3943 function type. */
555cd476
AM		 3944
3945static bfd_boolean
3946ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3947 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3948 Elf_Internal_Sym *isym,
3949 const char **name ATTRIBUTE_UNUSED,
3950 flagword *flags ATTRIBUTE_UNUSED,
3951 asection **sec,
3952 bfd_vma *value ATTRIBUTE_UNUSED)
3953{
8843416a
AM		 3954 if (*sec != NULL
3955 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476
AM		 3956 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3957 return TRUE;
3958}
3959
8387904d
AM		 3960/* This function makes an old ABI object reference to ".bar" cause the
3961 inclusion of a new ABI object archive that defines "bar". */
3962
3963static struct elf_link_hash_entry *
3964ppc64_elf_archive_symbol_lookup (bfd *abfd,
3965 struct bfd_link_info *info,
3966 const char *name)
3967{
3968 struct elf_link_hash_entry *h;
3969 char *dot_name;
3970 size_t len;
3971
3972 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
3973 if (h != NULL)
3974 return h;
3975
3976 if (name[0] == '.')
3977 return h;
3978
3979 len = strlen (name);
3980 dot_name = bfd_alloc (abfd, len + 2);
3981 if (dot_name == NULL)
3982 return (struct elf_link_hash_entry *) 0 - 1;
3983 dot_name[0] = '.';
3984 memcpy (dot_name + 1, name, len + 1);
3985 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
3986 bfd_release (abfd, dot_name);
3987 return h;
3988}
3989
3990/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 3991 new ABI object defines "bar". Well, at least, undefined dot symbols
3992 are made weak. This stops later archive searches from including an
3993 object if we already have a function descriptor definition. It also
35b0ce59
AM		 3994 prevents the linker complaining about undefined symbols.
3995 We also check and correct mismatched symbol visibility here. The
3996 most restrictive visibility of the function descriptor and the
3997 function entry symbol is used. */
8387904d
AM		 3998
3999static bfd_boolean
4000add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4001{
4002 struct bfd_link_info *info;
4003 struct ppc_link_hash_table *htab;
99877b66 4004 struct ppc_link_hash_entry *eh;
8387904d
AM		 4005 struct ppc_link_hash_entry *fdh;
4006
4007 if (h->root.type == bfd_link_hash_indirect)
4008 return TRUE;
4009
4010 if (h->root.type == bfd_link_hash_warning)
4011 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4012
35b0ce59 4013 if (h->root.root.string[0] != '.')
8387904d
AM		 4014 return TRUE;
4015
4016 info = inf;
4017 htab = ppc_hash_table (info);
99877b66
AM		 4018 eh = (struct ppc_link_hash_entry *) h;
4019 fdh = get_fdh (eh, htab);
8387904d
AM		 4020 if (fdh != NULL)
4021 {
35b0ce59
AM		 4022 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4023 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4024 if (entry_vis < descr_vis)
4025 fdh->elf.other += entry_vis - descr_vis;
4026 else if (entry_vis > descr_vis)
4027 eh->elf.other += descr_vis - entry_vis;
4028
4029 if (eh->elf.root.type == bfd_link_hash_undefined)
4030 {
4031 eh->elf.root.type = bfd_link_hash_undefweak;
4032 eh->was_undefined = 1;
4033 htab->twiddled_syms = 1;
4034 }
8387904d 4035 }
99877b66 4036
8387904d
AM		 4037 return TRUE;
4038}
4039
4040static bfd_boolean
4041ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4042 struct bfd_link_info *info)
4043{
99877b66
AM		 4044 struct ppc_link_hash_table *htab;
4045
4046 htab = ppc_hash_table (info);
ee75fd95 4047 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4048 return TRUE;
4049
8387904d 4050 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info);
99877b66
AM		 4051
4052 /* We need to fix the undefs list for any syms we have twiddled to
4053 undef_weak. */
4054 if (htab->twiddled_syms)
4055 {
4056 struct bfd_link_hash_entry **pun;
4057
4058 pun = &htab->elf.root.undefs;
4059 while (*pun != NULL)
4060 {
4061 struct bfd_link_hash_entry *h = *pun;
4062
4063 if (h->type != bfd_link_hash_undefined
4064 && h->type != bfd_link_hash_common)
4065 {
f6e332e6
AM		 4066 *pun = h->u.undef.next;
4067 h->u.undef.next = NULL;
99877b66
AM		 4068 if (h == htab->elf.root.undefs_tail)
4069 {
4070 if (pun == &htab->elf.root.undefs)
4071 htab->elf.root.undefs_tail = NULL;
4072 else
f6e332e6 4073 /* pun points at an u.undef.next field. Go back to
99877b66
AM		 4074 the start of the link_hash_entry. */
4075 htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *)
f6e332e6 4076 ((char *) pun - ((char *) &h->u.undef.next - (char *) h));
99877b66
AM		 4077 break;
4078 }
4079 }
4080 else
f6e332e6 4081 pun = &h->u.undef.next;
99877b66
AM		 4082 }
4083
4084 htab->twiddled_syms = 0;
4085 }
8387904d
AM		 4086 return TRUE;
4087}
4088
411e1bfb 4089static bfd_boolean
4ce794b7
AM		 4090update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4091 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4092{
4093 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4094 char *local_got_tls_masks;
411e1bfb
AM		 4095
4096 if (local_got_ents == NULL)
4097 {
4098 bfd_size_type size = symtab_hdr->sh_info;
4099
e7b938ca 4100 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4101 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4102 if (local_got_ents == NULL)
4103 return FALSE;
4104 elf_local_got_ents (abfd) = local_got_ents;
4105 }
4106
4107 if ((tls_type & TLS_EXPLICIT) == 0)
4108 {
4109 struct got_entry *ent;
4110
4111 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4112 if (ent->addend == r_addend
4113 && ent->owner == abfd
4114 && ent->tls_type == tls_type)
411e1bfb
AM		 4115 break;
4116 if (ent == NULL)
4117 {
4118 bfd_size_type amt = sizeof (*ent);
4ce794b7 4119 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4120 if (ent == NULL)
4121 return FALSE;
4122 ent->next = local_got_ents[r_symndx];
4123 ent->addend = r_addend;
e717da7e 4124 ent->owner = abfd;
411e1bfb
AM		 4125 ent->tls_type = tls_type;
4126 ent->got.refcount = 0;
4127 local_got_ents[r_symndx] = ent;
4128 }
4129 ent->got.refcount += 1;
4130 }
4131
e7b938ca
AM		 4132 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4133 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4134 return TRUE;
65f38f15
AM		 4135}
4136
411e1bfb 4137static bfd_boolean
4ce794b7 4138update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4139{
411e1bfb 4140 struct plt_entry *ent;
1e2f5b6e 4141
411e1bfb
AM		 4142 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4143 if (ent->addend == addend)
4144 break;
4145 if (ent == NULL)
1e2f5b6e 4146 {
411e1bfb 4147 bfd_size_type amt = sizeof (*ent);
4ce794b7 4148 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4149 if (ent == NULL)
4150 return FALSE;
4151 ent->next = eh->elf.plt.plist;
4152 ent->addend = addend;
4153 ent->plt.refcount = 0;
4154 eh->elf.plt.plist = ent;
1e2f5b6e 4155 }
411e1bfb 4156 ent->plt.refcount += 1;
f5385ebf 4157 eh->elf.needs_plt = 1;
411e1bfb 4158 eh->is_func = 1;
b34976b6 4159 return TRUE;
1e2f5b6e
AM		 4160}
4161
5bd4f169 4162/* Look through the relocs for a section during the first phase, and
65f38f15 4163 calculate needed space in the global offset table, procedure
5d1634d7 4164 linkage table, and dynamic reloc sections. */
5bd4f169 4165
b34976b6 4166static bfd_boolean
4ce794b7
AM		 4167ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4168 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4169{
65f38f15 4170 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4171 Elf_Internal_Shdr *symtab_hdr;
4172 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4173 const Elf_Internal_Rela *rel;
4174 const Elf_Internal_Rela *rel_end;
5bd4f169 4175 asection *sreloc;
1e2f5b6e 4176 asection **opd_sym_map;
5bd4f169 4177
1049f94e 4178 if (info->relocatable)
b34976b6 4179 return TRUE;
5bd4f169 4180
680a3378
AM		 4181 /* Don't do anything special with non-loaded, non-alloced sections.
4182 In particular, any relocs in such sections should not affect GOT
4183 and PLT reference counting (ie. we don't allow them to create GOT
4184 or PLT entries), there's no possibility or desire to optimize TLS
4185 relocs, and there's not much point in propagating relocs to shared
4186 libs that the dynamic linker won't relocate. */
4187 if ((sec->flags & SEC_ALLOC) == 0)
4188 return TRUE;
4189
65f38f15 4190 htab = ppc_hash_table (info);
5bd4f169 4191 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4192
4193 sym_hashes = elf_sym_hashes (abfd);
4194 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4195 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4196 - symtab_hdr->sh_info);
5bd4f169
AM		 4197
4198 sreloc = NULL;
1e2f5b6e
AM		 4199 opd_sym_map = NULL;
4200 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4201 {
4202 /* Garbage collection needs some extra help with .opd sections.
4203 We don't want to necessarily keep everything referenced by
4204 relocs in .opd, as that would keep all functions. Instead,
4205 if we reference an .opd symbol (a function descriptor), we
4206 want to keep the function code symbol's section. This is
4207 easy for global symbols, but for local syms we need to keep
4208 information about the associated function section. Later, if
4209 edit_opd deletes entries, we'll use this array to adjust
4210 local syms in .opd. */
4211 union opd_info {
4212 asection *func_section;
4213 long entry_adjust;
4214 };
4215 bfd_size_type amt;
4216
3f764659 4217 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4218 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4219 if (opd_sym_map == NULL)
b34976b6 4220 return FALSE;
f0abc2a1 4221 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4222 }
5bd4f169 4223
82bd7b59
AM		 4224 if (htab->sfpr == NULL
4225 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4226 return FALSE;
82bd7b59 4227
5bd4f169
AM		 4228 rel_end = relocs + sec->reloc_count;
4229 for (rel = relocs; rel < rel_end; rel++)
4230 {
4231 unsigned long r_symndx;
4232 struct elf_link_hash_entry *h;
04c9666a 4233 enum elf_ppc64_reloc_type r_type;
411e1bfb 4234 int tls_type = 0;
5bd4f169
AM		 4235
4236 r_symndx = ELF64_R_SYM (rel->r_info);
4237 if (r_symndx < symtab_hdr->sh_info)
4238 h = NULL;
4239 else
4240 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4241
4ce794b7 4242 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4243 switch (r_type)
5bd4f169 4244 {
411e1bfb
AM		 4245 case R_PPC64_GOT_TLSLD16:
4246 case R_PPC64_GOT_TLSLD16_LO:
4247 case R_PPC64_GOT_TLSLD16_HI:
4248 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4249 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4250 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4251 goto dogottls;
4252
4253 case R_PPC64_GOT_TLSGD16:
4254 case R_PPC64_GOT_TLSGD16_LO:
4255 case R_PPC64_GOT_TLSGD16_HI:
4256 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4257 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4258 goto dogottls;
4259
4260 case R_PPC64_GOT_TPREL16_DS:
4261 case R_PPC64_GOT_TPREL16_LO_DS:
4262 case R_PPC64_GOT_TPREL16_HI:
4263 case R_PPC64_GOT_TPREL16_HA:
4264 if (info->shared)
4265 info->flags |= DF_STATIC_TLS;
4266 tls_type = TLS_TLS | TLS_TPREL;
4267 goto dogottls;
4268
4269 case R_PPC64_GOT_DTPREL16_DS:
4270 case R_PPC64_GOT_DTPREL16_LO_DS:
4271 case R_PPC64_GOT_DTPREL16_HI:
4272 case R_PPC64_GOT_DTPREL16_HA:
4273 tls_type = TLS_TLS | TLS_DTPREL;
4274 dogottls:
4275 sec->has_tls_reloc = 1;
4276 /* Fall thru */
4277
5bd4f169 4278 case R_PPC64_GOT16:
5bd4f169 4279 case R_PPC64_GOT16_DS:
65f38f15
AM		 4280 case R_PPC64_GOT16_HA:
4281 case R_PPC64_GOT16_HI:
4282 case R_PPC64_GOT16_LO:
5bd4f169 4283 case R_PPC64_GOT16_LO_DS:
65f38f15 4284 /* This symbol requires a global offset table entry. */
ad8e1ba5 4285 sec->has_gp_reloc = 1;
e717da7e
AM		 4286 if (ppc64_elf_tdata (abfd)->got == NULL
4287 && !create_got_section (abfd, info))
b34976b6 4288 return FALSE;
5bd4f169
AM		 4289
4290 if (h != NULL)
4291 {
411e1bfb
AM		 4292 struct ppc_link_hash_entry *eh;
4293 struct got_entry *ent;
65f38f15 4294
411e1bfb
AM		 4295 eh = (struct ppc_link_hash_entry *) h;
4296 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4297 if (ent->addend == rel->r_addend
e717da7e 4298 && ent->owner == abfd
411e1bfb
AM		 4299 && ent->tls_type == tls_type)
4300 break;
4301 if (ent == NULL)
5bd4f169 4302 {
411e1bfb 4303 bfd_size_type amt = sizeof (*ent);
4ce794b7 4304 ent = bfd_alloc (abfd, amt);
411e1bfb 4305 if (ent == NULL)
b34976b6 4306 return FALSE;
411e1bfb
AM		 4307 ent->next = eh->elf.got.glist;
4308 ent->addend = rel->r_addend;
e717da7e 4309 ent->owner = abfd;
411e1bfb
AM		 4310 ent->tls_type = tls_type;
4311 ent->got.refcount = 0;
4312 eh->elf.got.glist = ent;
5bd4f169 4313 }
411e1bfb 4314 ent->got.refcount += 1;
e7b938ca 4315 eh->tls_mask |= tls_type;
5bd4f169 4316 }
411e1bfb
AM		 4317 else
4318 /* This is a global offset table entry for a local symbol. */
4319 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4320 rel->r_addend, tls_type))
4321 return FALSE;
5bd4f169
AM		 4322 break;
4323
5bd4f169 4324 case R_PPC64_PLT16_HA:
65f38f15
AM		 4325 case R_PPC64_PLT16_HI:
4326 case R_PPC64_PLT16_LO:
4327 case R_PPC64_PLT32:
4328 case R_PPC64_PLT64:
5bd4f169 4329 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4330 actually build the entry in adjust_dynamic_symbol,
4331 because this might be a case of linking PIC code without
4332 linking in any dynamic objects, in which case we don't
4333 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4334 if (h == NULL)
4335 {
4336 /* It does not make sense to have a procedure linkage
3fad3c7c 4337 table entry for a local symbol. */
5bd4f169 4338 bfd_set_error (bfd_error_bad_value);
b34976b6 4339 return FALSE;
5bd4f169 4340 }
411e1bfb
AM		 4341 else
4342 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4343 rel->r_addend))
4344 return FALSE;
5bd4f169
AM		 4345 break;
4346
4347 /* The following relocations don't need to propagate the
4348 relocation if linking a shared object since they are
4349 section relative. */
4350 case R_PPC64_SECTOFF:
4351 case R_PPC64_SECTOFF_LO:
4352 case R_PPC64_SECTOFF_HI:
4353 case R_PPC64_SECTOFF_HA:
4354 case R_PPC64_SECTOFF_DS:
4355 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4356 case R_PPC64_DTPREL16:
4357 case R_PPC64_DTPREL16_LO:
4358 case R_PPC64_DTPREL16_HI:
4359 case R_PPC64_DTPREL16_HA:
4360 case R_PPC64_DTPREL16_DS:
4361 case R_PPC64_DTPREL16_LO_DS:
4362 case R_PPC64_DTPREL16_HIGHER:
4363 case R_PPC64_DTPREL16_HIGHERA:
4364 case R_PPC64_DTPREL16_HIGHEST:
4365 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4366 break;
4367
ad8e1ba5
AM		 4368 /* Nor do these. */
4369 case R_PPC64_TOC16:
4370 case R_PPC64_TOC16_LO:
4371 case R_PPC64_TOC16_HI:
4372 case R_PPC64_TOC16_HA:
4373 case R_PPC64_TOC16_DS:
4374 case R_PPC64_TOC16_LO_DS:
4375 sec->has_gp_reloc = 1;
4376 break;
4377
5bd4f169
AM		 4378 /* This relocation describes the C++ object vtable hierarchy.
4379 Reconstruct it for later use during GC. */
4380 case R_PPC64_GNU_VTINHERIT:
c152c796 4381 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4382 return FALSE;
5bd4f169
AM		 4383 break;
4384
4385 /* This relocation describes which C++ vtable entries are actually
4386 used. Record for later use during GC. */
4387 case R_PPC64_GNU_VTENTRY:
c152c796 4388 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4389 return FALSE;
5bd4f169
AM		 4390 break;
4391
721956f4
AM		 4392 case R_PPC64_REL14:
4393 case R_PPC64_REL14_BRTAKEN:
4394 case R_PPC64_REL14_BRNTAKEN:
4395 htab->has_14bit_branch = 1;
4396 /* Fall through. */
4397
5d1634d7 4398 case R_PPC64_REL24:
8387904d 4399 if (h != NULL)
5d1634d7
AM		 4400 {
4401 /* We may need a .plt entry if the function this reloc
4402 refers to is in a shared lib. */
411e1bfb
AM		 4403 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4404 rel->r_addend))
4405 return FALSE;
8387904d
AM		 4406 if (h == &htab->tls_get_addr->elf
4407 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4408 sec->has_tls_reloc = 1;
8387904d
AM		 4409 else if (htab->tls_get_addr == NULL
4410 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4411 && (h->root.root.string[15] == 0
4412 || h->root.root.string[15] == '@'))
411e1bfb 4413 {
8387904d
AM		 4414 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4415 sec->has_tls_reloc = 1;
4416 }
4417 else if (htab->tls_get_addr_fd == NULL
4418 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4419 && (h->root.root.string[14] == 0
4420 || h->root.root.string[14] == '@'))
4421 {
4422 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4423 sec->has_tls_reloc = 1;
4424 }
4425 }
4426 break;
4427
4428 case R_PPC64_TPREL64:
4429 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4430 if (info->shared)
4431 info->flags |= DF_STATIC_TLS;
4432 goto dotlstoc;
4433
4434 case R_PPC64_DTPMOD64:
4435 if (rel + 1 < rel_end
4436 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4437 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4438 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4439 else
951fd09b 4440 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4441 goto dotlstoc;
4442
4443 case R_PPC64_DTPREL64:
4444 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4445 if (rel != relocs
4446 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4447 && rel[-1].r_offset == rel->r_offset - 8)
4448 /* This is the second reloc of a dtpmod, dtprel pair.
4449 Don't mark with TLS_DTPREL. */
4450 goto dodyn;
4451
4452 dotlstoc:
4453 sec->has_tls_reloc = 1;
4454 if (h != NULL)
4455 {
4456 struct ppc_link_hash_entry *eh;
4457 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4458 eh->tls_mask |= tls_type;
411e1bfb
AM		 4459 }
4460 else
4461 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4462 rel->r_addend, tls_type))
4463 return FALSE;
4464
4465 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4466 {
e7b938ca 4467 /* One extra to simplify get_tls_mask. */
eea6121a 4468 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4469 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4470 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4471 return FALSE;
4472 }
4473 BFD_ASSERT (rel->r_offset % 8 == 0);
4474 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4475
4476 /* Mark the second slot of a GD or LD entry.
4477 -1 to indicate GD and -2 to indicate LD. */
4478 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4479 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4480 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4481 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4482 goto dodyn;
4483
4484 case R_PPC64_TPREL16:
4485 case R_PPC64_TPREL16_LO:
4486 case R_PPC64_TPREL16_HI:
4487 case R_PPC64_TPREL16_HA:
4488 case R_PPC64_TPREL16_DS:
4489 case R_PPC64_TPREL16_LO_DS:
4490 case R_PPC64_TPREL16_HIGHER:
4491 case R_PPC64_TPREL16_HIGHERA:
4492 case R_PPC64_TPREL16_HIGHEST:
4493 case R_PPC64_TPREL16_HIGHESTA:
4494 if (info->shared)
4495 {
4496 info->flags |= DF_STATIC_TLS;
4497 goto dodyn;
5d1634d7
AM		 4498 }
4499 break;
4500
e86ce104 4501 case R_PPC64_ADDR64:
1e2f5b6e 4502 if (opd_sym_map != NULL
1e2f5b6e 4503 && rel + 1 < rel_end
4ce794b7 4504 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4505 {
8387904d
AM		 4506 if (h != NULL)
4507 {
4508 if (h->root.root.string[0] == '.'
4509 && h->root.root.string[1] != 0
4510 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4511 ;
4512 else
4513 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4514 }
4515 else
4516 {
4517 asection *s;
1e2f5b6e 4518
8387904d
AM		 4519 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4520 r_symndx);
4521 if (s == NULL)
4522 return FALSE;
4523 else if (s != sec)
3f764659 4524 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4525 }
1e2f5b6e 4526 }
e86ce104
AM		 4527 /* Fall through. */
4528
04c9666a 4529 case R_PPC64_REL30:
5bd4f169 4530 case R_PPC64_REL32:
04c9666a 4531 case R_PPC64_REL64:
65f38f15
AM		 4532 case R_PPC64_ADDR14:
4533 case R_PPC64_ADDR14_BRNTAKEN:
4534 case R_PPC64_ADDR14_BRTAKEN:
4535 case R_PPC64_ADDR16:
4536 case R_PPC64_ADDR16_DS:
4537 case R_PPC64_ADDR16_HA:
4538 case R_PPC64_ADDR16_HI:
4539 case R_PPC64_ADDR16_HIGHER:
4540 case R_PPC64_ADDR16_HIGHERA:
4541 case R_PPC64_ADDR16_HIGHEST:
4542 case R_PPC64_ADDR16_HIGHESTA:
4543 case R_PPC64_ADDR16_LO:
4544 case R_PPC64_ADDR16_LO_DS:
4545 case R_PPC64_ADDR24:
65f38f15 4546 case R_PPC64_ADDR32:
65f38f15
AM		 4547 case R_PPC64_UADDR16:
4548 case R_PPC64_UADDR32:
4549 case R_PPC64_UADDR64:
5bd4f169 4550 case R_PPC64_TOC:
81848ca0
AM		 4551 if (h != NULL && !info->shared)
4552 /* We may need a copy reloc. */
f5385ebf 4553 h->non_got_ref = 1;
81848ca0 4554
41bd81ab 4555 /* Don't propagate .opd relocs. */
1e2f5b6e 4556 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4557 break;
e86ce104 4558
65f38f15
AM		 4559 /* If we are creating a shared library, and this is a reloc
4560 against a global symbol, or a non PC relative reloc
4561 against a local symbol, then we need to copy the reloc
4562 into the shared library. However, if we are linking with
4563 -Bsymbolic, we do not need to copy a reloc against a
4564 global symbol which is defined in an object we are
4565 including in the link (i.e., DEF_REGULAR is set). At
4566 this point we have not seen all the input files, so it is
4567 possible that DEF_REGULAR is not set now but will be set
4568 later (it is never cleared). In case of a weak definition,
4569 DEF_REGULAR may be cleared later by a strong definition in
4570 a shared library. We account for that possibility below by
f4656909 4571 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4572 table entry. A similar situation occurs when creating
4573 shared libraries and symbol visibility changes render the
4574 symbol local.
4575
4576 If on the other hand, we are creating an executable, we
4577 may need to keep relocations for symbols satisfied by a
4578 dynamic library if we manage to avoid copy relocs for the
4579 symbol. */
411e1bfb 4580 dodyn:
65f38f15 4581 if ((info->shared
411e1bfb 4582 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4583 || (h != NULL
4584 && (! info->symbolic
4585 || h->root.type == bfd_link_hash_defweak
f5385ebf 4586 || !h->def_regular))))
f4656909
AM		 4587 || (ELIMINATE_COPY_RELOCS
4588 && !info->shared
65f38f15
AM		 4589 && h != NULL
4590 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4591 || !h->def_regular)))
5bd4f169 4592 {
ec338859
AM		 4593 struct ppc_dyn_relocs *p;
4594 struct ppc_dyn_relocs **head;
4595
65f38f15
AM		 4596 /* We must copy these reloc types into the output file.
4597 Create a reloc section in dynobj and make room for
4598 this reloc. */
5bd4f169
AM		 4599 if (sreloc == NULL)
4600 {
4601 const char *name;
65f38f15 4602 bfd *dynobj;
5bd4f169
AM		 4603
4604 name = (bfd_elf_string_from_elf_section
4605 (abfd,
4606 elf_elfheader (abfd)->e_shstrndx,
4607 elf_section_data (sec)->rel_hdr.sh_name));
4608 if (name == NULL)
b34976b6 4609 return FALSE;
5bd4f169 4610
65f38f15
AM		 4611 if (strncmp (name, ".rela", 5) != 0
4612 || strcmp (bfd_get_section_name (abfd, sec),
4613 name + 5) != 0)
4614 {
4615 (*_bfd_error_handler)
d003868e
AM		 4616 (_("%B: bad relocation section name `%s\'"),
4617 abfd, name);
5d1634d7 4618 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4619 }
4620
65f38f15 4621 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4622 sreloc = bfd_get_section_by_name (dynobj, name);
4623 if (sreloc == NULL)
4624 {
4625 flagword flags;
4626
4627 sreloc = bfd_make_section (dynobj, name);
4628 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4629 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4630 if ((sec->flags & SEC_ALLOC) != 0)
4631 flags |= SEC_ALLOC | SEC_LOAD;
4632 if (sreloc == NULL
4633 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 4634 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4635 return FALSE;
5bd4f169 4636 }
65f38f15 4637 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4638 }
4639
65f38f15
AM		 4640 /* If this is a global symbol, we count the number of
4641 relocations we need for this symbol. */
4642 if (h != NULL)
4643 {
ec338859 4644 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4645 }
4646 else
4647 {
ec338859
AM		 4648 /* Track dynamic relocs needed for local syms too.
4649 We really need local syms available to do this
4650 easily. Oh well. */
4651
4652 asection *s;
4653 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4654 sec, r_symndx);
4655 if (s == NULL)
b34976b6 4656 return FALSE;
ec338859
AM		 4657
4658 head = ((struct ppc_dyn_relocs **)
4659 &elf_section_data (s)->local_dynrel);
65f38f15 4660 }
ec338859
AM		 4661
4662 p = *head;
4663 if (p == NULL || p->sec != sec)
4664 {
4ce794b7 4665 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4666 if (p == NULL)
b34976b6 4667 return FALSE;
ec338859
AM		 4668 p->next = *head;
4669 *head = p;
4670 p->sec = sec;
4671 p->count = 0;
4672 p->pc_count = 0;
4673 }
4674
4675 p->count += 1;
411e1bfb 4676 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4677 p->pc_count += 1;
65f38f15 4678 }
5bd4f169 4679 break;
65f38f15
AM		 4680
4681 default:
96e0dda4 4682 break;
5bd4f169
AM		 4683 }
4684 }
4685
b34976b6 4686 return TRUE;
5bd4f169
AM		 4687}
4688
8387904d
AM		 4689/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4690 of the code entry point, and its section. */
4691
4692static bfd_vma
4693opd_entry_value (asection *opd_sec,
4694 bfd_vma offset,
4695 asection **code_sec,
4696 bfd_vma *code_off)
4697{
4698 bfd *opd_bfd = opd_sec->owner;
645ea6a9 4699 Elf_Internal_Rela *relocs, *save_relocs = NULL;
8387904d 4700 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4701 bfd_vma val;
8387904d 4702
4b85d634
AM		 4703 /* No relocs implies we are linking a --just-symbols object. */
4704 if (opd_sec->reloc_count == 0)
4705 {
4706 bfd_vma val;
4707
4708 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4709 return (bfd_vma) -1;
4710
4711 if (code_sec != NULL)
4712 {
4713 asection *sec, *likely = NULL;
4714 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4715 if (sec->vma <= val
4716 && (sec->flags & SEC_LOAD) != 0
4717 && (sec->flags & SEC_ALLOC) != 0)
4718 likely = sec;
4719 if (likely != NULL)
4720 {
4721 *code_sec = likely;
4722 if (code_off != NULL)
4723 *code_off = val - likely->vma;
4724 }
4725 }
4726 return val;
4727 }
4728
645ea6a9
AM		 4729 /* If the .opd relocs have been adjusted for output, then we need to
4730 re-read the original relocs rather than use the cached ones. */
4731 if (opd_sec->reloc_done)
4732 {
4733 save_relocs = elf_section_data (opd_sec)->relocs;
4734 elf_section_data (opd_sec)->relocs = NULL;
4735 }
4736
8387904d 4737 /* Go find the opd reloc at the sym address. */
645ea6a9
AM		 4738 lo = relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL,
4739 !opd_sec->reloc_done);
8387904d
AM		 4740 BFD_ASSERT (lo != NULL);
4741 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4742 val = (bfd_vma) -1;
8387904d
AM		 4743 while (lo < hi)
4744 {
4745 look = lo + (hi - lo) / 2;
4746 if (look->r_offset < offset)
4747 lo = look + 1;
4748 else if (look->r_offset > offset)
4749 hi = look;
4750 else
4751 {
4752 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4753 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4754 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4755 {
4756 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4757 asection *sec;
4758
4759 if (symndx < symtab_hdr->sh_info)
4760 {
4761 Elf_Internal_Sym *sym;
4762
4763 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4764 if (sym == NULL)
4765 {
4766 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4767 symtab_hdr->sh_info,
4768 0, NULL, NULL, NULL);
4769 if (sym == NULL)
645ea6a9 4770 break;
8387904d
AM		 4771 symtab_hdr->contents = (bfd_byte *) sym;
4772 }
4773
4774 sym += symndx;
4775 val = sym->st_value;
4776 sec = NULL;
4777 if ((sym->st_shndx != SHN_UNDEF
4778 && sym->st_shndx < SHN_LORESERVE)
4779 || sym->st_shndx > SHN_HIRESERVE)
4780 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4781 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4782 }
4783 else
4784 {
4785 struct elf_link_hash_entry **sym_hashes;
4786 struct elf_link_hash_entry *rh;
4787
4788 sym_hashes = elf_sym_hashes (opd_bfd);
4789 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4790 while (rh->root.type == bfd_link_hash_indirect
4791 || rh->root.type == bfd_link_hash_warning)
4792 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4793 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4794 || rh->root.type == bfd_link_hash_defweak);
4795 val = rh->root.u.def.value;
4796 sec = rh->root.u.def.section;
4797 }
4798 val += look->r_addend;
4799 if (code_off != NULL)
4800 *code_off = val;
4801 if (code_sec != NULL)
4802 *code_sec = sec;
4803 if (sec != NULL && sec->output_section != NULL)
4804 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4805 }
4806 break;
4807 }
4808 }
645ea6a9
AM		 4809
4810 if (opd_sec->reloc_done)
4811 {
4812 elf_section_data (opd_sec)->relocs = save_relocs;
4813 free (relocs);
4814 }
4815 return val;
8387904d
AM		 4816}
4817
5bd4f169
AM		 4818/* Return the section that should be marked against GC for a given
4819 relocation. */
4820
4821static asection *
4ce794b7 4822ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4823 struct bfd_link_info *info,
4ce794b7
AM		 4824 Elf_Internal_Rela *rel,
4825 struct elf_link_hash_entry *h,
4826 Elf_Internal_Sym *sym)
5bd4f169 4827{
ccfa59ea
AM		 4828 asection *rsec;
4829
4830 /* First mark all our entry sym sections. */
4831 if (info->gc_sym_list != NULL)
4832 {
4833 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4834 struct bfd_sym_chain *sym = info->gc_sym_list;
4835
4836 info->gc_sym_list = NULL;
4837 do
4838 {
4839 struct ppc_link_hash_entry *eh;
4840
4841 eh = (struct ppc_link_hash_entry *)
4842 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4843 if (eh == NULL)
4844 continue;
4845 if (eh->elf.root.type != bfd_link_hash_defined
4846 && eh->elf.root.type != bfd_link_hash_defweak)
4847 continue;
4848
4849 if (eh->is_func_descriptor)
4850 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4851 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4852 && opd_entry_value (eh->elf.root.u.def.section,
4853 eh->elf.root.u.def.value,
4854 &rsec, NULL) != (bfd_vma) -1)
4855 ;
ccfa59ea
AM		 4856 else
4857 continue;
4858
4859 if (!rsec->gc_mark)
4860 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4861
4862 rsec = eh->elf.root.u.def.section;
4863 if (!rsec->gc_mark)
4864 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4865
4866 sym = sym->next;
4867 }
4868 while (sym != NULL);
4869 }
4870
4871 /* Syms return NULL if we're marking .opd, so we avoid marking all
4872 function sections, as all functions are referenced in .opd. */
4873 rsec = NULL;
4874 if (get_opd_info (sec) != NULL)
4875 return rsec;
1e2f5b6e 4876
5bd4f169
AM		 4877 if (h != NULL)
4878 {
04c9666a 4879 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4880 struct ppc_link_hash_entry *eh;
a33d1f77 4881
4ce794b7 4882 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4883 switch (r_type)
5bd4f169
AM		 4884 {
4885 case R_PPC64_GNU_VTINHERIT:
4886 case R_PPC64_GNU_VTENTRY:
4887 break;
4888
4889 default:
4890 switch (h->root.type)
4891 {
4892 case bfd_link_hash_defined:
4893 case bfd_link_hash_defweak:
ccfa59ea
AM		 4894 eh = (struct ppc_link_hash_entry *) h;
4895 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4896 eh = eh->oh;
1e2f5b6e
AM		 4897
4898 /* Function descriptor syms cause the associated
4899 function code sym section to be marked. */
ccfa59ea
AM		 4900 if (eh->is_func_descriptor)
4901 {
4902 /* They also mark their opd section. */
4903 if (!eh->elf.root.u.def.section->gc_mark)
4904 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4905 ppc64_elf_gc_mark_hook);
4906
4907 rsec = eh->oh->elf.root.u.def.section;
4908 }
8387904d
AM		 4909 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4910 && opd_entry_value (eh->elf.root.u.def.section,
4911 eh->elf.root.u.def.value,
4912 &rsec, NULL) != (bfd_vma) -1)
4913 {
4914 if (!eh->elf.root.u.def.section->gc_mark)
4915 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4916 ppc64_elf_gc_mark_hook);
4917 }
ccfa59ea 4918 else
1e2f5b6e
AM		 4919 rsec = h->root.u.def.section;
4920 break;
5bd4f169
AM		 4921
4922 case bfd_link_hash_common:
1e2f5b6e
AM		 4923 rsec = h->root.u.c.p->section;
4924 break;
5bd4f169
AM		 4925
4926 default:
4927 break;
4928 }
4929 }
4930 }
4931 else
4932 {
1e2f5b6e
AM		 4933 asection **opd_sym_section;
4934
4935 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 4936 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 4937 if (opd_sym_section != NULL)
ccfa59ea
AM		 4938 {
4939 if (!rsec->gc_mark)
4940 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4941
3f764659 4942 rsec = opd_sym_section[sym->st_value / 8];
ccfa59ea 4943 }
5bd4f169
AM		 4944 }
4945
1e2f5b6e 4946 return rsec;
5bd4f169
AM		 4947}
4948
65f38f15
AM		 4949/* Update the .got, .plt. and dynamic reloc reference counts for the
4950 section being removed. */
5bd4f169 4951
b34976b6 4952static bfd_boolean
4ce794b7
AM		 4953ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4954 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4955{
411e1bfb 4956 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4957 Elf_Internal_Shdr *symtab_hdr;
4958 struct elf_link_hash_entry **sym_hashes;
411e1bfb 4959 struct got_entry **local_got_ents;
5bd4f169 4960 const Elf_Internal_Rela *rel, *relend;
5bd4f169 4961
680a3378
AM		 4962 if ((sec->flags & SEC_ALLOC) == 0)
4963 return TRUE;
4964
ec338859
AM		 4965 elf_section_data (sec)->local_dynrel = NULL;
4966
411e1bfb 4967 htab = ppc_hash_table (info);
5bd4f169
AM		 4968 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4969 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 4970 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 4971
4972 relend = relocs + sec->reloc_count;
4973 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 4974 {
4975 unsigned long r_symndx;
04c9666a 4976 enum elf_ppc64_reloc_type r_type;
58ac9f71 4977 struct elf_link_hash_entry *h = NULL;
411e1bfb 4978 char tls_type = 0;
5bd4f169 4979
a33d1f77 4980 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 4981 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 4982 if (r_symndx >= symtab_hdr->sh_info)
4983 {
4984 struct ppc_link_hash_entry *eh;
4985 struct ppc_dyn_relocs **pp;
4986 struct ppc_dyn_relocs *p;
4987
4988 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4989 eh = (struct ppc_link_hash_entry *) h;
4990
4991 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4992 if (p->sec == sec)
4993 {
4994 /* Everything must go for SEC. */
4995 *pp = p->next;
4996 break;
4997 }
4998 }
4999
a33d1f77
AM		 5000 switch (r_type)
5001 {
411e1bfb
AM		 5002 case R_PPC64_GOT_TLSLD16:
5003 case R_PPC64_GOT_TLSLD16_LO:
5004 case R_PPC64_GOT_TLSLD16_HI:
5005 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5006 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5007 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5008 goto dogot;
5009
5010 case R_PPC64_GOT_TLSGD16:
5011 case R_PPC64_GOT_TLSGD16_LO:
5012 case R_PPC64_GOT_TLSGD16_HI:
5013 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5014 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5015 goto dogot;
5016
5017 case R_PPC64_GOT_TPREL16_DS:
5018 case R_PPC64_GOT_TPREL16_LO_DS:
5019 case R_PPC64_GOT_TPREL16_HI:
5020 case R_PPC64_GOT_TPREL16_HA:
5021 tls_type = TLS_TLS | TLS_TPREL;
5022 goto dogot;
5023
5024 case R_PPC64_GOT_DTPREL16_DS:
5025 case R_PPC64_GOT_DTPREL16_LO_DS:
5026 case R_PPC64_GOT_DTPREL16_HI:
5027 case R_PPC64_GOT_DTPREL16_HA:
5028 tls_type = TLS_TLS | TLS_DTPREL;
5029 goto dogot;
5030
a33d1f77
AM		 5031 case R_PPC64_GOT16:
5032 case R_PPC64_GOT16_DS:
5033 case R_PPC64_GOT16_HA:
5034 case R_PPC64_GOT16_HI:
5035 case R_PPC64_GOT16_LO:
5036 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5037 dogot:
5038 {
5039 struct got_entry *ent;
5040
58ac9f71
AM		 5041 if (h != NULL)
5042 ent = h->got.glist;
411e1bfb
AM		 5043 else
5044 ent = local_got_ents[r_symndx];
5045
5046 for (; ent != NULL; ent = ent->next)
5047 if (ent->addend == rel->r_addend
e717da7e 5048 && ent->owner == abfd
411e1bfb
AM		 5049 && ent->tls_type == tls_type)
5050 break;
5051 if (ent == NULL)
5052 abort ();
5053 if (ent->got.refcount > 0)
5054 ent->got.refcount -= 1;
5055 }
a33d1f77 5056 break;
65f38f15 5057
a33d1f77
AM		 5058 case R_PPC64_PLT16_HA:
5059 case R_PPC64_PLT16_HI:
5060 case R_PPC64_PLT16_LO:
5061 case R_PPC64_PLT32:
5062 case R_PPC64_PLT64:
721956f4
AM		 5063 case R_PPC64_REL14:
5064 case R_PPC64_REL14_BRNTAKEN:
5065 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5066 case R_PPC64_REL24:
58ac9f71 5067 if (h != NULL)
5d1634d7 5068 {
411e1bfb
AM		 5069 struct plt_entry *ent;
5070
411e1bfb
AM		 5071 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5072 if (ent->addend == rel->r_addend)
5073 break;
5074 if (ent == NULL)
5075 abort ();
5076 if (ent->plt.refcount > 0)
5077 ent->plt.refcount -= 1;
5d1634d7 5078 }
e86ce104 5079 break;
5d1634d7 5080
a33d1f77
AM		 5081 default:
5082 break;
5083 }
5084 }
b34976b6 5085 return TRUE;
5bd4f169
AM		 5086}
5087
deb0e272
AM		 5088/* The maximum size of .sfpr. */
5089#define SFPR_MAX (218*4)
5090
5091struct sfpr_def_parms
5092{
699733f6
AM		 5093 const char name[12];
5094 unsigned char lo, hi;
deb0e272
AM		 5095 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5096 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5097};
5098
5099/* Auto-generate _save*, _rest* functions in .sfpr. */
5100
5101static unsigned int
5102sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5103{
5104 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5105 unsigned int i;
5106 size_t len = strlen (parm->name);
5107 bfd_boolean writing = FALSE;
699733f6 5108 char sym[16];
deb0e272
AM		 5109
5110 memcpy (sym, parm->name, len);
5111 sym[len + 2] = 0;
5112
5113 for (i = parm->lo; i <= parm->hi; i++)
5114 {
5115 struct elf_link_hash_entry *h;
5116
5117 sym[len + 0] = i / 10 + '0';
5118 sym[len + 1] = i % 10 + '0';
5119 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5120 if (h != NULL
f5385ebf 5121 && !h->def_regular)
deb0e272
AM		 5122 {
5123 h->root.type = bfd_link_hash_defined;
5124 h->root.u.def.section = htab->sfpr;
5125 h->root.u.def.value = htab->sfpr->size;
5126 h->type = STT_FUNC;
f5385ebf 5127 h->def_regular = 1;
deb0e272
AM		 5128 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5129 writing = TRUE;
5130 if (htab->sfpr->contents == NULL)
5131 {
5132 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5133 if (htab->sfpr->contents == NULL)
5134 return FALSE;
5135 }
5136 }
5137 if (writing)
5138 {
5139 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5140 if (i != parm->hi)
5141 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5142 else
5143 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5144 htab->sfpr->size = p - htab->sfpr->contents;
5145 }
5146 }
5147
5148 return TRUE;
5149}
5150
5151static bfd_byte *
5152savegpr0 (bfd *abfd, bfd_byte *p, int r)
5153{
5154 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5155 return p + 4;
5156}
5157
5158static bfd_byte *
5159savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5160{
5161 p = savegpr0 (abfd, p, r);
5162 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5163 p = p + 4;
5164 bfd_put_32 (abfd, BLR, p);
5165 return p + 4;
5166}
5167
5168static bfd_byte *
5169restgpr0 (bfd *abfd, bfd_byte *p, int r)
5170{
5171 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5172 return p + 4;
5173}
5174
5175static bfd_byte *
5176restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5177{
5178 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5179 p = p + 4;
5180 p = restgpr0 (abfd, p, r);
5181 bfd_put_32 (abfd, MTLR_R0, p);
5182 p = p + 4;
5183 if (r == 29)
5184 {
5185 p = restgpr0 (abfd, p, 30);
5186 p = restgpr0 (abfd, p, 31);
5187 }
5188 bfd_put_32 (abfd, BLR, p);
5189 return p + 4;
5190}
5191
5192static bfd_byte *
5193savegpr1 (bfd *abfd, bfd_byte *p, int r)
5194{
5195 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5196 return p + 4;
5197}
5198
5199static bfd_byte *
5200savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5201{
5202 p = savegpr1 (abfd, p, r);
5203 bfd_put_32 (abfd, BLR, p);
5204 return p + 4;
5205}
5206
5207static bfd_byte *
5208restgpr1 (bfd *abfd, bfd_byte *p, int r)
5209{
5210 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5211 return p + 4;
5212}
5213
5214static bfd_byte *
5215restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5216{
5217 p = restgpr1 (abfd, p, r);
5218 bfd_put_32 (abfd, BLR, p);
5219 return p + 4;
5220}
5221
5222static bfd_byte *
5223savefpr (bfd *abfd, bfd_byte *p, int r)
5224{
5225 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5226 return p + 4;
5227}
5228
5229static bfd_byte *
5230savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5231{
5232 p = savefpr (abfd, p, r);
5233 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5234 p = p + 4;
5235 bfd_put_32 (abfd, BLR, p);
5236 return p + 4;
5237}
5238
5239static bfd_byte *
5240restfpr (bfd *abfd, bfd_byte *p, int r)
5241{
5242 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5243 return p + 4;
5244}
5245
5246static bfd_byte *
5247restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5248{
5249 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5250 p = p + 4;
5251 p = restfpr (abfd, p, r);
5252 bfd_put_32 (abfd, MTLR_R0, p);
5253 p = p + 4;
5254 if (r == 29)
5255 {
5256 p = restfpr (abfd, p, 30);
5257 p = restfpr (abfd, p, 31);
5258 }
5259 bfd_put_32 (abfd, BLR, p);
5260 return p + 4;
5261}
5262
5263static bfd_byte *
5264savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5265{
5266 p = savefpr (abfd, p, r);
5267 bfd_put_32 (abfd, BLR, p);
5268 return p + 4;
5269}
5270
5271static bfd_byte *
5272restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5273{
5274 p = restfpr (abfd, p, r);
5275 bfd_put_32 (abfd, BLR, p);
5276 return p + 4;
5277}
5278
5279static bfd_byte *
5280savevr (bfd *abfd, bfd_byte *p, int r)
5281{
5282 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5283 p = p + 4;
5284 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5285 return p + 4;
5286}
5287
5288static bfd_byte *
5289savevr_tail (bfd *abfd, bfd_byte *p, int r)
5290{
5291 p = savevr (abfd, p, r);
5292 bfd_put_32 (abfd, BLR, p);
5293 return p + 4;
5294}
5295
5296static bfd_byte *
5297restvr (bfd *abfd, bfd_byte *p, int r)
5298{
5299 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5300 p = p + 4;
5301 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5302 return p + 4;
5303}
5304
5305static bfd_byte *
5306restvr_tail (bfd *abfd, bfd_byte *p, int r)
5307{
5308 p = restvr (abfd, p, r);
5309 bfd_put_32 (abfd, BLR, p);
5310 return p + 4;
5311}
5312
e86ce104
AM		 5313/* Called via elf_link_hash_traverse to transfer dynamic linking
5314 information on function code symbol entries to their corresponding
5315 function descriptor symbol entries. */
deb0e272 5316
b34976b6 5317static bfd_boolean
4ce794b7 5318func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5319{
e86ce104 5320 struct bfd_link_info *info;
65f38f15 5321 struct ppc_link_hash_table *htab;
411e1bfb 5322 struct plt_entry *ent;
50bc7936
AM		 5323 struct ppc_link_hash_entry *fh;
5324 struct ppc_link_hash_entry *fdh;
5325 bfd_boolean force_local;
5bd4f169 5326
50bc7936
AM		 5327 fh = (struct ppc_link_hash_entry *) h;
5328 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5329 return TRUE;
e86ce104 5330
50bc7936
AM		 5331 if (fh->elf.root.type == bfd_link_hash_warning)
5332 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5333
4ce794b7 5334 info = inf;
65f38f15 5335 htab = ppc_hash_table (info);
5bd4f169 5336
c09bdfe5
AM		 5337 /* Resolve undefined references to dot-symbols as the value
5338 in the function descriptor, if we have one in a regular object.
5339 This is to satisfy cases like ".quad .foo". Calls to functions
5340 in dynamic objects are handled elsewhere. */
5341 if (fh->elf.root.type == bfd_link_hash_undefweak
5342 && fh->was_undefined
5343 && (fh->oh->elf.root.type == bfd_link_hash_defined
5344 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5345 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5346 && opd_entry_value (fh->oh->elf.root.u.def.section,
5347 fh->oh->elf.root.u.def.value,
5348 &fh->elf.root.u.def.section,
5349 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5350 {
5351 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5352 fh->elf.forced_local = 1;
c09bdfe5
AM		 5353 }
5354
e86ce104
AM		 5355 /* If this is a function code symbol, transfer dynamic linking
5356 information to the function descriptor symbol. */
50bc7936 5357 if (!fh->is_func)
b34976b6 5358 return TRUE;
e86ce104 5359
50bc7936 5360 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5361 if (ent->plt.refcount > 0)
5362 break;
50bc7936
AM		 5363 if (ent == NULL
5364 || fh->elf.root.root.string[0] != '.'
5365 || fh->elf.root.root.string[1] == '\0')
5366 return TRUE;
5bd4f169 5367
50bc7936
AM		 5368 /* Find the corresponding function descriptor symbol. Create it
5369 as undefined if necessary. */
5bd4f169 5370
50bc7936
AM		 5371 fdh = get_fdh (fh, htab);
5372 if (fdh != NULL)
5373 while (fdh->elf.root.type == bfd_link_hash_indirect
5374 || fdh->elf.root.type == bfd_link_hash_warning)
5375 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5376
50bc7936
AM		 5377 if (fdh == NULL
5378 && info->shared
5379 && (fh->elf.root.type == bfd_link_hash_undefined
5380 || fh->elf.root.type == bfd_link_hash_undefweak))
5381 {
5382 bfd *abfd;
5383 asymbol *newsym;
5384 struct bfd_link_hash_entry *bh;
5385
5386 abfd = fh->elf.root.u.undef.abfd;
5387 newsym = bfd_make_empty_symbol (abfd);
5388 newsym->name = fh->elf.root.root.string + 1;
5389 newsym->section = bfd_und_section_ptr;
5390 newsym->value = 0;
5391 newsym->flags = BSF_OBJECT;
5392 if (fh->elf.root.type == bfd_link_hash_undefweak)
5393 newsym->flags |= BSF_WEAK;
5394
5395 bh = &fdh->elf.root;
5396 if ( !(_bfd_generic_link_add_one_symbol
5397 (info, abfd, newsym->name, newsym->flags,
5398 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
648cca2c 5399 {
50bc7936 5400 return FALSE;
648cca2c 5401 }
50bc7936 5402 fdh = (struct ppc_link_hash_entry *) bh;
f5385ebf 5403 fdh->elf.non_elf = 0;
50bc7936
AM		 5404 fdh->elf.size = 24;
5405 fdh->elf.type = STT_OBJECT;
5406 }
648cca2c 5407
50bc7936 5408 if (fdh != NULL
f5385ebf 5409 && !fdh->elf.forced_local
50bc7936 5410 && (info->shared
f5385ebf
AM		 5411 || fdh->elf.def_dynamic
5412 || fdh->elf.ref_dynamic
50bc7936
AM		 5413 || (fdh->elf.root.type == bfd_link_hash_undefweak
5414 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5415 {
5416 if (fdh->elf.dynindx == -1)
c152c796 5417 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5418 return FALSE;
f5385ebf
AM		 5419 fdh->elf.ref_regular |= fh->elf.ref_regular;
5420 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5421 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5422 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5423 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5424 {
8387904d
AM		 5425 struct plt_entry **ep = &fdh->elf.plt.plist;
5426 while (*ep != NULL)
5427 ep = &(*ep)->next;
5428 *ep = fh->elf.plt.plist;
5429 fh->elf.plt.plist = NULL;
f5385ebf 5430 fdh->elf.needs_plt = 1;
e86ce104 5431 }
50bc7936 5432 fdh->is_func_descriptor = 1;
34814b9f
AM		 5433 fdh->oh = fh;
5434 fh->oh = fdh;
e86ce104
AM		 5435 }
5436
50bc7936
AM		 5437 /* Now that the info is on the function descriptor, clear the
5438 function code sym info. Any function code syms for which we
5439 don't have a definition in a regular file, we force local.
5440 This prevents a shared library from exporting syms that have
5441 been imported from another library. Function code syms that
5442 are really in the library we must leave global to prevent the
5443 linker dragging in a definition from a static library. */
5444 force_local
5445 = (info->shared
f5385ebf 5446 && (!fh->elf.def_regular
50bc7936 5447 || fdh == NULL
f5385ebf
AM		 5448 || !fdh->elf.def_regular
5449 || fdh->elf.forced_local));
50bc7936
AM		 5450 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5451
b34976b6 5452 return TRUE;
e86ce104 5453}
40b8271b 5454
e86ce104 5455/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5456 this hook to a) provide some gcc support functions, and b) transfer
5457 dynamic linking information gathered so far on function code symbol
5458 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5459
b34976b6 5460static bfd_boolean
4ce794b7
AM		 5461ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5462 struct bfd_link_info *info)
e86ce104
AM		 5463{
5464 struct ppc_link_hash_table *htab;
82bd7b59 5465 unsigned int i;
deb0e272
AM		 5466 const struct sfpr_def_parms funcs[] =
5467 {
5468 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5469 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5470 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5471 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5472 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5473 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5474 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5475 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5476 { "._savef", 14, 31, savefpr, savefpr1_tail },
5477 { "._restf", 14, 31, restfpr, restfpr1_tail },
5478 { "_savevr_", 20, 31, savevr, savevr_tail },
5479 { "_restvr_", 20, 31, restvr, restvr_tail }
5480 };
e86ce104
AM		 5481
5482 htab = ppc_hash_table (info);
82bd7b59
AM		 5483 if (htab->sfpr == NULL)
5484 /* We don't have any relocs. */
b34976b6 5485 return TRUE;
82bd7b59 5486
deb0e272
AM		 5487 /* Provide any missing _save* and _rest* functions. */
5488 htab->sfpr->size = 0;
5489 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5490 if (!sfpr_define (info, &funcs[i]))
5491 return FALSE;
82bd7b59 5492
4ce794b7 5493 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5494
eea6121a 5495 if (htab->sfpr->size == 0)
deb0e272 5496 _bfd_strip_section_from_output (info, htab->sfpr);
82bd7b59 5497
b34976b6 5498 return TRUE;
e86ce104
AM		 5499}
5500
5501/* Adjust a symbol defined by a dynamic object and referenced by a
5502 regular object. The current definition is in some section of the
5503 dynamic object, but we're not including those sections. We have to
5504 change the definition to something the rest of the link can
5505 understand. */
5506
b34976b6 5507static bfd_boolean
4ce794b7
AM		 5508ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5509 struct elf_link_hash_entry *h)
e86ce104
AM		 5510{
5511 struct ppc_link_hash_table *htab;
e86ce104
AM		 5512 asection *s;
5513 unsigned int power_of_two;
5514
5515 htab = ppc_hash_table (info);
5516
5517 /* Deal with function syms. */
5518 if (h->type == STT_FUNC
f5385ebf 5519 || h->needs_plt)
e86ce104
AM		 5520 {
5521 /* Clear procedure linkage table information for any symbol that
5522 won't need a .plt entry. */
411e1bfb
AM		 5523 struct plt_entry *ent;
5524 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5525 if (ent->plt.refcount > 0)
5526 break;
8387904d 5527 if (ent == NULL
9c7a29a3
AM		 5528 || SYMBOL_CALLS_LOCAL (info, h)
5529 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5530 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5531 {
411e1bfb 5532 h->plt.plist = NULL;
f5385ebf 5533 h->needs_plt = 0;
40b8271b 5534 }
5bd4f169 5535 }
bbd7ec4a 5536 else
411e1bfb 5537 h->plt.plist = NULL;
5bd4f169
AM		 5538
5539 /* If this is a weak symbol, and there is a real definition, the
5540 processor independent code will have arranged for us to see the
5541 real definition first, and we can just use the same value. */
f6e332e6 5542 if (h->u.weakdef != NULL)
5bd4f169 5543 {
f6e332e6
AM		 5544 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5545 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5546 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5547 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5548 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5549 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5550 return TRUE;
5bd4f169
AM		 5551 }
5552
5bd4f169
AM		 5553 /* If we are creating a shared library, we must presume that the
5554 only references to the symbol are via the global offset table.
5555 For such cases we need not do anything here; the relocations will
5556 be handled correctly by relocate_section. */
5557 if (info->shared)
b34976b6 5558 return TRUE;
5bd4f169 5559
65f38f15
AM		 5560 /* If there are no references to this symbol that do not use the
5561 GOT, we don't need to generate a copy reloc. */
f5385ebf 5562 if (!h->non_got_ref)
b34976b6 5563 return TRUE;
65f38f15 5564
f4656909 5565 if (ELIMINATE_COPY_RELOCS)
65f38f15 5566 {
f4656909
AM		 5567 struct ppc_link_hash_entry * eh;
5568 struct ppc_dyn_relocs *p;
65f38f15 5569
f4656909
AM		 5570 eh = (struct ppc_link_hash_entry *) h;
5571 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5572 {
5573 s = p->sec->output_section;
5574 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5575 break;
5576 }
5577
5578 /* If we didn't find any dynamic relocs in read-only sections, then
5579 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5580 if (p == NULL)
5581 {
f5385ebf 5582 h->non_got_ref = 0;
f4656909
AM		 5583 return TRUE;
5584 }
65f38f15
AM		 5585 }
5586
5d35169e 5587 if (h->plt.plist != NULL)
97b639ba
AM		 5588 {
5589 /* We should never get here, but unfortunately there are versions
5590 of gcc out there that improperly (for this ABI) put initialized
5591 function pointers, vtable refs and suchlike in read-only
5592 sections. Allow them to proceed, but warn that this might
5593 break at runtime. */
5594 (*_bfd_error_handler)
5595 (_("copy reloc against `%s' requires lazy plt linking; "
5596 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5597 h->root.root.string);
5598 }
5d35169e
AM		 5599
5600 /* This is a reference to a symbol defined by a dynamic object which
5601 is not a function. */
5602
5bd4f169
AM		 5603 /* We must allocate the symbol in our .dynbss section, which will
5604 become part of the .bss section of the executable. There will be
5605 an entry for this symbol in the .dynsym section. The dynamic
5606 object will contain position independent code, so all references
5607 from the dynamic object to this symbol will go through the global
5608 offset table. The dynamic linker will use the .dynsym entry to
5609 determine the address it must put in the global offset table, so
5610 both the dynamic object and the regular object will refer to the
5611 same memory location for the variable. */
5bd4f169 5612
04c9666a
AM		 5613 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5614 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5615 runtime process image. We need to remember the offset into the
5616 .rela.bss section we are going to use. */
5617 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5618 {
eea6121a 5619 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5620 h->needs_copy = 1;
5bd4f169
AM		 5621 }
5622
5623 /* We need to figure out the alignment required for this symbol. I
5624 have no idea how ELF linkers handle this. */
5625 power_of_two = bfd_log2 (h->size);
5626 if (power_of_two > 4)
5627 power_of_two = 4;
5628
5629 /* Apply the required alignment. */
4ce794b7 5630 s = htab->dynbss;
eea6121a 5631 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5632 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5633 {
65f38f15 5634 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5635 return FALSE;
5bd4f169
AM		 5636 }
5637
5638 /* Define the symbol as being at this point in the section. */
5639 h->root.u.def.section = s;
eea6121a 5640 h->root.u.def.value = s->size;
5bd4f169
AM		 5641
5642 /* Increment the section size to make room for the symbol. */
eea6121a 5643 s->size += h->size;
5bd4f169 5644
b34976b6 5645 return TRUE;
5bd4f169
AM		 5646}
5647
e86ce104
AM		 5648/* If given a function descriptor symbol, hide both the function code
5649 sym and the descriptor. */
5650static void
4ce794b7
AM		 5651ppc64_elf_hide_symbol (struct bfd_link_info *info,
5652 struct elf_link_hash_entry *h,
5653 bfd_boolean force_local)
e86ce104 5654{
34814b9f 5655 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5656 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5657
34814b9f
AM		 5658 eh = (struct ppc_link_hash_entry *) h;
5659 if (eh->is_func_descriptor)
e86ce104 5660 {
34814b9f 5661 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5662
721956f4 5663 if (fh == NULL)
d1329ca3
AM		 5664 {
5665 const char *p, *q;
5666 struct ppc_link_hash_table *htab;
5667 char save;
5668
5669 /* We aren't supposed to use alloca in BFD because on
5670 systems which do not have alloca the version in libiberty
5671 calls xmalloc, which might cause the program to crash
5672 when it runs out of memory. This function doesn't have a
5673 return status, so there's no way to gracefully return an
5674 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5675 accessed; It's either a string in an ELF string table,
5676 or allocated in an objalloc structure. */
d1329ca3 5677
34814b9f 5678 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5679 save = *p;
5680 *(char *) p = '.';
5681 htab = ppc_hash_table (info);
34814b9f
AM		 5682 fh = (struct ppc_link_hash_entry *)
5683 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5684 *(char *) p = save;
5685
5686 /* Unfortunately, if it so happens that the string we were
5687 looking for was allocated immediately before this string,
5688 then we overwrote the string terminator. That's the only
5689 reason the lookup should fail. */
5690 if (fh == NULL)
5691 {
34814b9f
AM		 5692 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5693 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5694 --q, --p;
34814b9f
AM		 5695 if (q < eh->elf.root.root.string && *p == '.')
5696 fh = (struct ppc_link_hash_entry *)
5697 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5698 }
5699 if (fh != NULL)
5700 {
34814b9f
AM		 5701 eh->oh = fh;
5702 fh->oh = eh;
d1329ca3
AM		 5703 }
5704 }
e86ce104 5705 if (fh != NULL)
34814b9f 5706 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5707 }
5708}
5709
411e1bfb 5710static bfd_boolean
8843416a
AM		 5711get_sym_h (struct elf_link_hash_entry **hp,
5712 Elf_Internal_Sym **symp,
5713 asection **symsecp,
5714 char **tls_maskp,
5715 Elf_Internal_Sym **locsymsp,
5716 unsigned long r_symndx,
5717 bfd *ibfd)
411e1bfb
AM		 5718{
5719 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5720
5721 if (r_symndx >= symtab_hdr->sh_info)
5722 {
5723 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5724 struct elf_link_hash_entry *h;
5725
5726 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5727 while (h->root.type == bfd_link_hash_indirect
5728 || h->root.type == bfd_link_hash_warning)
5729 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5730
5731 if (hp != NULL)
5732 *hp = h;
5733
5734 if (symp != NULL)
5735 *symp = NULL;
5736
5737 if (symsecp != NULL)
5738 {
5739 asection *symsec = NULL;
5740 if (h->root.type == bfd_link_hash_defined
5741 || h->root.type == bfd_link_hash_defweak)
5742 symsec = h->root.u.def.section;
5743 *symsecp = symsec;
5744 }
5745
e7b938ca 5746 if (tls_maskp != NULL)
411e1bfb
AM		 5747 {
5748 struct ppc_link_hash_entry *eh;
5749
5750 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5751 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5752 }
5753 }
5754 else
5755 {
5756 Elf_Internal_Sym *sym;
5757 Elf_Internal_Sym *locsyms = *locsymsp;
5758
5759 if (locsyms == NULL)
5760 {
5761 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5762 if (locsyms == NULL)
5763 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5764 symtab_hdr->sh_info,
5765 0, NULL, NULL, NULL);
5766 if (locsyms == NULL)
5767 return FALSE;
5768 *locsymsp = locsyms;
5769 }
5770 sym = locsyms + r_symndx;
5771
5772 if (hp != NULL)
5773 *hp = NULL;
5774
5775 if (symp != NULL)
5776 *symp = sym;
5777
5778 if (symsecp != NULL)
5779 {
5780 asection *symsec = NULL;
5781 if ((sym->st_shndx != SHN_UNDEF
5782 && sym->st_shndx < SHN_LORESERVE)
5783 || sym->st_shndx > SHN_HIRESERVE)
5784 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5785 *symsecp = symsec;
5786 }
5787
e7b938ca 5788 if (tls_maskp != NULL)
411e1bfb
AM		 5789 {
5790 struct got_entry **lgot_ents;
e7b938ca 5791 char *tls_mask;
411e1bfb 5792
e7b938ca 5793 tls_mask = NULL;
411e1bfb
AM		 5794 lgot_ents = elf_local_got_ents (ibfd);
5795 if (lgot_ents != NULL)
5796 {
e7b938ca
AM		 5797 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5798 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5799 }
e7b938ca 5800 *tls_maskp = tls_mask;
411e1bfb
AM		 5801 }
5802 }
5803 return TRUE;
5804}
5805
e7b938ca 5806/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5807 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5808 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5809
5810static int
0d4792f7
AM		 5811get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5812 Elf_Internal_Sym **locsymsp,
4ce794b7 5813 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5814{
5815 unsigned long r_symndx;
0d4792f7 5816 int next_r;
411e1bfb
AM		 5817 struct elf_link_hash_entry *h;
5818 Elf_Internal_Sym *sym;
5819 asection *sec;
5820 bfd_vma off;
5821
5822 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5823 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5824 return 0;
411e1bfb 5825
e7b938ca 5826 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5827 || sec == NULL
5828 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5829 return 1;
411e1bfb
AM		 5830
5831 /* Look inside a TOC section too. */
5832 if (h != NULL)
5833 {
5834 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5835 off = h->root.u.def.value;
5836 }
5837 else
5838 off = sym->st_value;
5839 off += rel->r_addend;
5840 BFD_ASSERT (off % 8 == 0);
5841 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5842 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5843 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5844 return 0;
0d4792f7
AM		 5845 if (toc_symndx != NULL)
5846 *toc_symndx = r_symndx;
5847 if ((h == NULL
5848 || ((h->root.type == bfd_link_hash_defined
5849 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5850 && !h->def_dynamic))
0d4792f7
AM		 5851 && (next_r == -1 || next_r == -2))
5852 return 1 - next_r;
951fd09b 5853 return 1;
411e1bfb
AM		 5854}
5855
754021d0 5856/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5857 code for the old ABI, these will already have been done. */
754021d0
AM		 5858
5859static bfd_boolean
5860adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5861{
5862 struct ppc_link_hash_entry *eh;
5863 asection *sym_sec;
5864 long *opd_adjust;
5865
5866 if (h->root.type == bfd_link_hash_indirect)
5867 return TRUE;
5868
5869 if (h->root.type == bfd_link_hash_warning)
5870 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5871
5872 if (h->root.type != bfd_link_hash_defined
5873 && h->root.type != bfd_link_hash_defweak)
5874 return TRUE;
5875
5876 eh = (struct ppc_link_hash_entry *) h;
5877 if (eh->adjust_done)
5878 return TRUE;
5879
5880 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 5881 opd_adjust = get_opd_info (sym_sec);
5882 if (opd_adjust != NULL)
754021d0 5883 {
3f764659 5884 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 5885 if (adjust == -1)
5886 {
5887 /* This entry has been deleted. */
81688140
AM		 5888 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5889 if (dsec == NULL)
5890 {
5891 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5892 if (elf_discarded_section (dsec))
5893 {
5894 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5895 break;
5896 }
5897 }
4025353c 5898 eh->elf.root.u.def.value = 0;
81688140 5899 eh->elf.root.u.def.section = dsec;
4025353c
AM		 5900 }
5901 else
5902 eh->elf.root.u.def.value += adjust;
754021d0
AM		 5903 eh->adjust_done = 1;
5904 }
5905 return TRUE;
5906}
5907
5908/* Remove unused Official Procedure Descriptor entries. Currently we
5909 only remove those associated with functions in discarded link-once
5910 sections, or weakly defined functions that have been overridden. It
5911 would be possible to remove many more entries for statically linked
5912 applications. */
5913
b34976b6 5914bfd_boolean
3f764659
JJ		 5915ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5916 bfd_boolean non_overlapping)
1e2f5b6e
AM		 5917{
5918 bfd *ibfd;
754021d0 5919 bfd_boolean some_edited = FALSE;
3f764659 5920 asection *need_pad = NULL;
1e2f5b6e 5921
411e1bfb 5922 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 5923 {
5924 asection *sec;
5925 Elf_Internal_Rela *relstart, *rel, *relend;
5926 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 5927 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 5928 struct elf_link_hash_entry **sym_hashes;
5929 bfd_vma offset;
d6fe2dc1 5930 bfd_size_type amt;
4025353c 5931 long *opd_adjust;
3f764659
JJ		 5932 bfd_boolean need_edit, add_aux_fields;
5933 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 5934
5935 sec = bfd_get_section_by_name (ibfd, ".opd");
5936 if (sec == NULL)
5937 continue;
5938
3f764659 5939 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 5940 opd_adjust = get_opd_info (sec);
5941 if (opd_adjust == NULL)
d6fe2dc1 5942 {
4b85d634
AM		 5943 /* check_relocs hasn't been called. Must be a ld -r link
5944 or --just-symbols object. */
4025353c
AM		 5945 opd_adjust = bfd_zalloc (obfd, amt);
5946 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 5947 }
4025353c 5948 memset (opd_adjust, 0, amt);
1e2f5b6e 5949
4b85d634
AM		 5950 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5951 continue;
5952
1e2f5b6e
AM		 5953 if (sec->output_section == bfd_abs_section_ptr)
5954 continue;
5955
5956 /* Look through the section relocs. */
5957 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5958 continue;
5959
6cdc0ccc 5960 local_syms = NULL;
1e2f5b6e
AM		 5961 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5962 sym_hashes = elf_sym_hashes (ibfd);
5963
5964 /* Read the relocations. */
4ce794b7 5965 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 5966 info->keep_memory);
1e2f5b6e 5967 if (relstart == NULL)
b34976b6 5968 return FALSE;
1e2f5b6e
AM		 5969
5970 /* First run through the relocs to check they are sane, and to
5971 determine whether we need to edit this opd section. */
b34976b6 5972 need_edit = FALSE;
3f764659 5973 need_pad = sec;
1e2f5b6e
AM		 5974 offset = 0;
5975 relend = relstart + sec->reloc_count;
50bc7936 5976 for (rel = relstart; rel < relend; )
1e2f5b6e 5977 {
04c9666a 5978 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 5979 unsigned long r_symndx;
5980 asection *sym_sec;
5981 struct elf_link_hash_entry *h;
5982 Elf_Internal_Sym *sym;
5983
3f764659 5984 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 5985 only interested in the reloc pointing to a function entry
5986 point. */
50bc7936
AM		 5987 if (rel->r_offset != offset
5988 || rel + 1 >= relend
5989 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 5990 {
5991 /* If someone messes with .opd alignment then after a
5992 "ld -r" we might have padding in the middle of .opd.
5993 Also, there's nothing to prevent someone putting
5994 something silly in .opd with the assembler. No .opd
b34976b6 5995 optimization for them! */
3f764659 5996 broken_opd:
1e2f5b6e 5997 (*_bfd_error_handler)
d003868e 5998 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 5999 need_edit = FALSE;
1e2f5b6e
AM		 6000 break;
6001 }
6002
50bc7936
AM		 6003 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6004 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6005 {
6006 (*_bfd_error_handler)
d003868e
AM		 6007 (_("%B: unexpected reloc type %u in .opd section"),
6008 ibfd, r_type);
50bc7936
AM		 6009 need_edit = FALSE;
6010 break;
6011 }
6012
1e2f5b6e 6013 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6014 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6015 r_symndx, ibfd))
50bc7936 6016 goto error_ret;
1e2f5b6e
AM		 6017
6018 if (sym_sec == NULL || sym_sec->owner == NULL)
6019 {
411e1bfb
AM		 6020 const char *sym_name;
6021 if (h != NULL)
6022 sym_name = h->root.root.string;
6023 else
be8dd2ca 6024 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
411e1bfb 6025
1e2f5b6e 6026 (*_bfd_error_handler)
d003868e
AM		 6027 (_("%B: undefined sym `%s' in .opd section"),
6028 ibfd, sym_name);
b34976b6 6029 need_edit = FALSE;
1e2f5b6e
AM		 6030 break;
6031 }
6032
51020317
AM		 6033 /* opd entries are always for functions defined in the
6034 current input bfd. If the symbol isn't defined in the
6035 input bfd, then we won't be using the function in this
6036 bfd; It must be defined in a linkonce section in another
6037 bfd, or is weak. It's also possible that we are
6038 discarding the function due to a linker script /DISCARD/,
6039 which we test for via the output_section. */
6040 if (sym_sec->owner != ibfd
6041 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6042 need_edit = TRUE;
1e2f5b6e 6043
50bc7936 6044 rel += 2;
3f764659
JJ		 6045 if (rel == relend
6046 || (rel + 1 == relend && rel->r_offset == offset + 16))
6047 {
6048 if (sec->size == offset + 24)
6049 {
6050 need_pad = NULL;
6051 break;
6052 }
6053 if (rel == relend && sec->size == offset + 16)
6054 {
6055 cnt_16b++;
6056 break;
6057 }
6058 goto broken_opd;
6059 }
6060
6061 if (rel->r_offset == offset + 24)
6062 offset += 24;
6063 else if (rel->r_offset != offset + 16)
6064 goto broken_opd;
6065 else if (rel + 1 < relend
6066 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6067 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6068 {
6069 offset += 16;
6070 cnt_16b++;
6071 }
6072 else if (rel + 2 < relend
6073 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6074 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6075 {
6076 offset += 24;
6077 rel += 1;
6078 }
6079 else
6080 goto broken_opd;
1e2f5b6e
AM		 6081 }
6082
3f764659
JJ		 6083 add_aux_fields = non_overlapping && cnt_16b > 0;
6084
6085 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6086 {
6087 Elf_Internal_Rela *write_rel;
6088 bfd_byte *rptr, *wptr;
3f764659 6089 bfd_byte *new_contents = NULL;
b34976b6 6090 bfd_boolean skip;
3f764659 6091 long opd_ent_size;
1e2f5b6e
AM		 6092
6093 /* This seems a waste of time as input .opd sections are all
6094 zeros as generated by gcc, but I suppose there's no reason
6095 this will always be so. We might start putting something in
6096 the third word of .opd entries. */
6097 if ((sec->flags & SEC_IN_MEMORY) == 0)
6098 {
eea6121a
AM		 6099 bfd_byte *loc;
6100 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6101 {
eea6121a
AM		 6102 if (loc != NULL)
6103 free (loc);
50bc7936 6104 error_ret:
6cdc0ccc
AM		 6105 if (local_syms != NULL
6106 && symtab_hdr->contents != (unsigned char *) local_syms)
6107 free (local_syms);
6cdc0ccc
AM		 6108 if (elf_section_data (sec)->relocs != relstart)
6109 free (relstart);
b34976b6 6110 return FALSE;
6cdc0ccc 6111 }
1e2f5b6e
AM		 6112 sec->contents = loc;
6113 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6114 }
6115
6116 elf_section_data (sec)->relocs = relstart;
6117
6118 wptr = sec->contents;
6119 rptr = sec->contents;
3f764659
JJ		 6120 new_contents = sec->contents;
6121
6122 if (add_aux_fields)
6123 {
6124 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6125 if (new_contents == NULL)
6126 return FALSE;
6127 need_pad = FALSE;
6128 wptr = new_contents;
6129 }
6130
1e2f5b6e 6131 write_rel = relstart;
b34976b6 6132 skip = FALSE;
1e2f5b6e 6133 offset = 0;
3f764659 6134 opd_ent_size = 0;
1e2f5b6e
AM		 6135 for (rel = relstart; rel < relend; rel++)
6136 {
50bc7936
AM		 6137 unsigned long r_symndx;
6138 asection *sym_sec;
6139 struct elf_link_hash_entry *h;
6140 Elf_Internal_Sym *sym;
6141
6142 r_symndx = ELF64_R_SYM (rel->r_info);
6143 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6144 r_symndx, ibfd))
50bc7936
AM		 6145 goto error_ret;
6146
1e2f5b6e
AM		 6147 if (rel->r_offset == offset)
6148 {
50bc7936 6149 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6150
6151 /* See if the .opd entry is full 24 byte or
6152 16 byte (with fd_aux entry overlapped with next
6153 fd_func). */
6154 opd_ent_size = 24;
6155 if ((rel + 2 == relend && sec->size == offset + 16)
6156 || (rel + 3 < relend
6157 && rel[2].r_offset == offset + 16
6158 && rel[3].r_offset == offset + 24
6159 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6160 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6161 opd_ent_size = 16;
6162
4025353c
AM		 6163 if (h != NULL
6164 && h->root.root.string[0] == '.')
50bc7936
AM		 6165 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6166 ppc_hash_table (info));
1e2f5b6e 6167
51020317
AM		 6168 skip = (sym_sec->owner != ibfd
6169 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6170 if (skip)
6171 {
4025353c 6172 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6173 {
6174 /* Arrange for the function descriptor sym
6175 to be dropped. */
d6fe2dc1
AM		 6176 fdh->elf.root.u.def.value = 0;
6177 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6178 }
3f764659 6179 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6180 }
6181 else
1e2f5b6e
AM		 6182 {
6183 /* We'll be keeping this opd entry. */
6184
4025353c 6185 if (fdh != NULL)
1e2f5b6e 6186 {
754021d0
AM		 6187 /* Redefine the function descriptor symbol to
6188 this location in the opd section. It is
6189 necessary to update the value here rather
6190 than using an array of adjustments as we do
6191 for local symbols, because various places
6192 in the generic ELF code use the value
6193 stored in u.def.value. */
3f764659 6194 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6195 fdh->adjust_done = 1;
1e2f5b6e 6196 }
754021d0
AM		 6197
6198 /* Local syms are a bit tricky. We could
6199 tweak them as they can be cached, but
6200 we'd need to look through the local syms
6201 for the function descriptor sym which we
6202 don't have at the moment. So keep an
6203 array of adjustments. */
3f764659
JJ		 6204 opd_adjust[rel->r_offset / 8]
6205 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6206
6207 if (wptr != rptr)
3f764659
JJ		 6208 memcpy (wptr, rptr, opd_ent_size);
6209 wptr += opd_ent_size;
6210 if (add_aux_fields && opd_ent_size == 16)
6211 {
6212 memset (wptr, '\0', 8);
6213 wptr += 8;
6214 }
1e2f5b6e 6215 }
3f764659
JJ		 6216 rptr += opd_ent_size;
6217 offset += opd_ent_size;
1e2f5b6e
AM		 6218 }
6219
50bc7936
AM		 6220 if (skip)
6221 {
6222 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6223 if (info->shared)
6224 {
6225 /* We won't be needing dynamic relocs here. */
6226 struct ppc_dyn_relocs **pp;
6227 struct ppc_dyn_relocs *p;
6228
6229 if (h != NULL)
6230 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6231 else if (sym_sec != NULL)
6232 pp = ((struct ppc_dyn_relocs **)
6233 &elf_section_data (sym_sec)->local_dynrel);
6234 else
6235 pp = ((struct ppc_dyn_relocs **)
6236 &elf_section_data (sec)->local_dynrel);
6237 while ((p = *pp) != NULL)
6238 {
6239 if (p->sec == sec)
6240 {
6241 p->count -= 1;
6242 if (p->count == 0)
d37c89e5 6243 *pp = p->next;
50bc7936
AM		 6244 break;
6245 }
6246 pp = &p->next;
6247 }
6248 }
6249 }
6250 else
1e2f5b6e 6251 {
50bc7936
AM		 6252 /* We need to adjust any reloc offsets to point to the
6253 new opd entries. While we're at it, we may as well
6254 remove redundant relocs. */
3f764659 6255 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6256 if (write_rel != rel)
6257 memcpy (write_rel, rel, sizeof (*rel));
6258 ++write_rel;
6259 }
6260 }
6261
3f764659 6262 sec->size = wptr - new_contents;
1e2f5b6e 6263 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6264 if (add_aux_fields)
6265 {
6266 free (sec->contents);
6267 sec->contents = new_contents;
6268 }
6269
cdcf6e38
AM		 6270 /* Fudge the size too, as this is used later in
6271 elf_bfd_final_link if we are emitting relocs. */
6272 elf_section_data (sec)->rel_hdr.sh_size
6273 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6274 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6275 some_edited = TRUE;
1e2f5b6e 6276 }
6cdc0ccc 6277 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6278 free (relstart);
6cdc0ccc 6279
411e1bfb
AM		 6280 if (local_syms != NULL
6281 && symtab_hdr->contents != (unsigned char *) local_syms)
6282 {
6283 if (!info->keep_memory)
6284 free (local_syms);
6285 else
6286 symtab_hdr->contents = (unsigned char *) local_syms;
6287 }
6288 }
6289
754021d0
AM		 6290 if (some_edited)
6291 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6292
3f764659
JJ		 6293 /* If we are doing a final link and the last .opd entry is just 16 byte
6294 long, add a 8 byte padding after it. */
6295 if (need_pad != NULL && !info->relocatable)
6296 {
6297 bfd_byte *p;
6298
6299 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6300 {
6301 BFD_ASSERT (need_pad->size > 0);
6302
6303 p = bfd_malloc (need_pad->size + 8);
6304 if (p == NULL)
6305 return FALSE;
699733f6 6306
3f764659
JJ		 6307 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6308 p, 0, need_pad->size))
6309 return FALSE;
6310
6311 need_pad->contents = p;
6312 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6313 }
6314 else
6315 {
6316 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6317 if (p == NULL)
6318 return FALSE;
6319
6320 need_pad->contents = p;
6321 }
6322
6323 memset (need_pad->contents + need_pad->size, 0, 8);
6324 need_pad->size += 8;
6325 }
6326
411e1bfb
AM		 6327 return TRUE;
6328}
6329
e1918d23 6330/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6331
e1918d23 6332asection *
4ce794b7 6333ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6334{
411e1bfb
AM		 6335 struct ppc_link_hash_table *htab;
6336
411e1bfb 6337 htab = ppc_hash_table (info);
a48ebf4d
AM		 6338 if (htab->tls_get_addr != NULL)
6339 {
8387904d 6340 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6341
8387904d
AM		 6342 while (h->elf.root.type == bfd_link_hash_indirect
6343 || h->elf.root.type == bfd_link_hash_warning)
6344 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6345
6346 htab->tls_get_addr = h;
8387904d
AM		 6347
6348 if (htab->tls_get_addr_fd == NULL
6349 && h->oh != NULL
6350 && h->oh->is_func_descriptor)
6351 htab->tls_get_addr_fd = h->oh;
6352 }
6353
6354 if (htab->tls_get_addr_fd != NULL)
6355 {
6356 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6357
6358 while (h->elf.root.type == bfd_link_hash_indirect
6359 || h->elf.root.type == bfd_link_hash_warning)
6360 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6361
6362 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6363 }
6364
e1918d23 6365 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6366}
411e1bfb 6367
951fd09b
AM		 6368/* Run through all the TLS relocs looking for optimization
6369 opportunities. The linker has been hacked (see ppc64elf.em) to do
6370 a preliminary section layout so that we know the TLS segment
6371 offsets. We can't optimize earlier because some optimizations need
6372 to know the tp offset, and we need to optimize before allocating
6373 dynamic relocations. */
6374
6375bfd_boolean
4ce794b7 6376ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6377{
6378 bfd *ibfd;
6379 asection *sec;
6380 struct ppc_link_hash_table *htab;
6381
1049f94e 6382 if (info->relocatable || info->shared)
411e1bfb
AM		 6383 return TRUE;
6384
951fd09b 6385 htab = ppc_hash_table (info);
411e1bfb
AM		 6386 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6387 {
6388 Elf_Internal_Sym *locsyms = NULL;
6389
6390 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6391 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6392 {
6393 Elf_Internal_Rela *relstart, *rel, *relend;
6394 int expecting_tls_get_addr;
6395
6396 /* Read the relocations. */
4ce794b7 6397 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6398 info->keep_memory);
411e1bfb
AM		 6399 if (relstart == NULL)
6400 return FALSE;
6401
6402 expecting_tls_get_addr = 0;
6403 relend = relstart + sec->reloc_count;
6404 for (rel = relstart; rel < relend; rel++)
6405 {
6406 enum elf_ppc64_reloc_type r_type;
6407 unsigned long r_symndx;
6408 struct elf_link_hash_entry *h;
6409 Elf_Internal_Sym *sym;
6410 asection *sym_sec;
e7b938ca
AM		 6411 char *tls_mask;
6412 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6413 bfd_vma value;
951fd09b 6414 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6415
6416 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6417 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6418 r_symndx, ibfd))
6419 {
6420 err_free_rel:
6421 if (elf_section_data (sec)->relocs != relstart)
6422 free (relstart);
6423 if (locsyms != NULL
6424 && (elf_tdata (ibfd)->symtab_hdr.contents
6425 != (unsigned char *) locsyms))
6426 free (locsyms);
6427 return FALSE;
6428 }
6429
6430 if (h != NULL)
6431 {
6432 if (h->root.type != bfd_link_hash_defined
6433 && h->root.type != bfd_link_hash_defweak)
6434 continue;
6435 value = h->root.u.def.value;
6436 }
6437 else
4025353c
AM		 6438 /* Symbols referenced by TLS relocs must be of type
6439 STT_TLS. So no need for .opd local sym adjust. */
6440 value = sym->st_value;
951fd09b 6441
411e1bfb 6442 ok_tprel = FALSE;
951fd09b
AM		 6443 is_local = FALSE;
6444 if (h == NULL
f5385ebf 6445 || !h->def_dynamic)
411e1bfb 6446 {
951fd09b 6447 is_local = TRUE;
411e1bfb
AM		 6448 value += sym_sec->output_offset;
6449 value += sym_sec->output_section->vma;
e1918d23 6450 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6451 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6452 < (bfd_vma) 1 << 32);
6453 }
6454
4ce794b7 6455 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6456 switch (r_type)
6457 {
6458 case R_PPC64_GOT_TLSLD16:
6459 case R_PPC64_GOT_TLSLD16_LO:
6460 case R_PPC64_GOT_TLSLD16_HI:
6461 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6462 /* These relocs should never be against a symbol
6463 defined in a shared lib. Leave them alone if
6464 that turns out to be the case. */
e717da7e 6465 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6466 if (!is_local)
6467 continue;
6468
951fd09b
AM		 6469 /* LD -> LE */
6470 tls_set = 0;
6471 tls_clear = TLS_LD;
e7b938ca 6472 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6473 expecting_tls_get_addr = 1;
6474 break;
6475
6476 case R_PPC64_GOT_TLSGD16:
6477 case R_PPC64_GOT_TLSGD16_LO:
6478 case R_PPC64_GOT_TLSGD16_HI:
6479 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6480 if (ok_tprel)
411e1bfb
AM		 6481 /* GD -> LE */
6482 tls_set = 0;
6483 else
6484 /* GD -> IE */
951fd09b
AM		 6485 tls_set = TLS_TLS | TLS_TPRELGD;
6486 tls_clear = TLS_GD;
e7b938ca 6487 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6488 expecting_tls_get_addr = 1;
6489 break;
6490
6491 case R_PPC64_GOT_TPREL16_DS:
6492 case R_PPC64_GOT_TPREL16_LO_DS:
6493 case R_PPC64_GOT_TPREL16_HI:
6494 case R_PPC64_GOT_TPREL16_HA:
6495 expecting_tls_get_addr = 0;
6496 if (ok_tprel)
6497 {
6498 /* IE -> LE */
6499 tls_set = 0;
6500 tls_clear = TLS_TPREL;
e7b938ca 6501 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6502 break;
6503 }
6504 else
6505 continue;
6506
6507 case R_PPC64_REL14:
6508 case R_PPC64_REL14_BRTAKEN:
6509 case R_PPC64_REL14_BRNTAKEN:
6510 case R_PPC64_REL24:
6511 if (h != NULL
8387904d
AM		 6512 && (h == &htab->tls_get_addr->elf
6513 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6514 {
6515 if (!expecting_tls_get_addr
6516 && rel != relstart
6517 && ((ELF64_R_TYPE (rel[-1].r_info)
6518 == R_PPC64_TOC16)
6519 || (ELF64_R_TYPE (rel[-1].r_info)
6520 == R_PPC64_TOC16_LO)))
6521 {
6522 /* Check for toc tls entries. */
6523 char *toc_tls;
951fd09b 6524 int retval;
411e1bfb 6525
0d4792f7 6526 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6527 rel - 1, ibfd);
6528 if (retval == 0)
411e1bfb
AM		 6529 goto err_free_rel;
6530 if (toc_tls != NULL)
951fd09b 6531 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6532 }
6533
6534 if (expecting_tls_get_addr)
6535 {
6536 struct plt_entry *ent;
6537 for (ent = h->plt.plist; ent; ent = ent->next)
6538 if (ent->addend == 0)
6539 {
6540 if (ent->plt.refcount > 0)
6541 ent->plt.refcount -= 1;
6542 break;
6543 }
6544 }
6545 }
6546 expecting_tls_get_addr = 0;
6547 continue;
6548
6549 case R_PPC64_TPREL64:
6550 expecting_tls_get_addr = 0;
6551 if (ok_tprel)
6552 {
6553 /* IE -> LE */
6554 tls_set = TLS_EXPLICIT;
6555 tls_clear = TLS_TPREL;
6556 break;
6557 }
6558 else
6559 continue;
6560
6561 case R_PPC64_DTPMOD64:
6562 expecting_tls_get_addr = 0;
951fd09b
AM		 6563 if (rel + 1 < relend
6564 && (rel[1].r_info
6565 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6566 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6567 {
951fd09b 6568 if (ok_tprel)
411e1bfb 6569 /* GD -> LE */
951fd09b 6570 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6571 else
6572 /* GD -> IE */
951fd09b
AM		 6573 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6574 tls_clear = TLS_GD;
411e1bfb
AM		 6575 }
6576 else
6577 {
951fd09b
AM		 6578 if (!is_local)
6579 continue;
6580
6581 /* LD -> LE */
6582 tls_set = TLS_EXPLICIT;
6583 tls_clear = TLS_LD;
411e1bfb
AM		 6584 }
6585 break;
6586
6587 default:
6588 expecting_tls_get_addr = 0;
6589 continue;
6590 }
6591
6592 if ((tls_set & TLS_EXPLICIT) == 0)
6593 {
6594 struct got_entry *ent;
6595
6596 /* Adjust got entry for this reloc. */
6597 if (h != NULL)
6598 ent = h->got.glist;
6599 else
6600 ent = elf_local_got_ents (ibfd)[r_symndx];
6601
6602 for (; ent != NULL; ent = ent->next)
6603 if (ent->addend == rel->r_addend
e717da7e 6604 && ent->owner == ibfd
e7b938ca 6605 && ent->tls_type == tls_type)
411e1bfb
AM		 6606 break;
6607 if (ent == NULL)
6608 abort ();
6609
6610 if (tls_set == 0)
6611 {
6612 /* We managed to get rid of a got entry. */
6613 if (ent->got.refcount > 0)
6614 ent->got.refcount -= 1;
6615 }
411e1bfb
AM		 6616 }
6617 else if (h != NULL)
6618 {
6619 struct ppc_link_hash_entry * eh;
6620 struct ppc_dyn_relocs **pp;
6621 struct ppc_dyn_relocs *p;
6622
6623 /* Adjust dynamic relocs. */
6624 eh = (struct ppc_link_hash_entry *) h;
6625 for (pp = &eh->dyn_relocs;
6626 (p = *pp) != NULL;
6627 pp = &p->next)
6628 if (p->sec == sec)
6629 {
6630 /* If we got rid of a DTPMOD/DTPREL reloc
6631 pair then we'll lose one or two dyn
6632 relocs. */
951fd09b 6633 if (tls_set == (TLS_EXPLICIT | TLS_GD))
411e1bfb 6634 p->count -= 1;
951fd09b 6635 p->count -= 1;
411e1bfb
AM		 6636 if (p->count == 0)
6637 *pp = p->next;
6638 break;
6639 }
6640 }
6641
e7b938ca
AM		 6642 *tls_mask |= tls_set;
6643 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6644 }
6645
6646 if (elf_section_data (sec)->relocs != relstart)
6647 free (relstart);
6648 }
6649
6650 if (locsyms != NULL
6651 && (elf_tdata (ibfd)->symtab_hdr.contents
6652 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6653 {
6654 if (!info->keep_memory)
411e1bfb 6655 free (locsyms);
6cdc0ccc 6656 else
411e1bfb 6657 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6658 }
1e2f5b6e 6659 }
b34976b6 6660 return TRUE;
1e2f5b6e 6661}
b34976b6 6662
c5614fa4
AM		 6663/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6664 the values of any global symbols in a toc section that has been
6665 edited. Globals in toc sections should be a rarity, so this function
6666 sets a flag if any are found in toc sections other than the one just
6667 edited, so that futher hash table traversals can be avoided. */
6668
6669struct adjust_toc_info
6670{
6671 asection *toc;
6672 unsigned long *skip;
6673 bfd_boolean global_toc_syms;
6674};
6675
6676static bfd_boolean
6677adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6678{
6679 struct ppc_link_hash_entry *eh;
6680 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6681
6682 if (h->root.type == bfd_link_hash_indirect)
6683 return TRUE;
6684
6685 if (h->root.type == bfd_link_hash_warning)
6686 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6687
6688 if (h->root.type != bfd_link_hash_defined
6689 && h->root.type != bfd_link_hash_defweak)
6690 return TRUE;
6691
6692 eh = (struct ppc_link_hash_entry *) h;
6693 if (eh->adjust_done)
6694 return TRUE;
6695
6696 if (eh->elf.root.u.def.section == toc_inf->toc)
6697 {
6698 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6699 if (skip != (unsigned long) -1)
6700 eh->elf.root.u.def.value -= skip;
6701 else
6702 {
6703 (*_bfd_error_handler)
6704 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6705 eh->elf.root.u.def.section = &bfd_abs_section;
6706 eh->elf.root.u.def.value = 0;
6707 }
6708 eh->adjust_done = 1;
6709 }
6710 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6711 toc_inf->global_toc_syms = TRUE;
6712
6713 return TRUE;
6714}
6715
6716/* Examine all relocs referencing .toc sections in order to remove
6717 unused .toc entries. */
6718
6719bfd_boolean
6720ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6721{
6722 bfd *ibfd;
6723 struct adjust_toc_info toc_inf;
6724
6725 toc_inf.global_toc_syms = TRUE;
6726 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6727 {
6728 asection *toc, *sec;
6729 Elf_Internal_Shdr *symtab_hdr;
6730 Elf_Internal_Sym *local_syms;
6731 struct elf_link_hash_entry **sym_hashes;
6732 Elf_Internal_Rela *relstart, *rel, *wrel;
6733 unsigned long *skip, *drop;
6734 unsigned char *used;
6735 unsigned char *keep, last, some_unused;
6736
6737 toc = bfd_get_section_by_name (ibfd, ".toc");
6738 if (toc == NULL
6739 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6740 || elf_discarded_section (toc))
6741 continue;
6742
6743 local_syms = NULL;
6744 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6745 sym_hashes = elf_sym_hashes (ibfd);
6746
6747 /* Look at sections dropped from the final link. */
6748 skip = NULL;
6749 relstart = NULL;
6750 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6751 {
6752 if (sec->reloc_count == 0
6753 || !elf_discarded_section (sec)
6754 || get_opd_info (sec)
6755 || (sec->flags & SEC_ALLOC) == 0
6756 || (sec->flags & SEC_DEBUGGING) != 0)
6757 continue;
6758
6759 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6760 if (relstart == NULL)
6761 goto error_ret;
6762
6763 /* Run through the relocs to see which toc entries might be
6764 unused. */
6765 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6766 {
6767 enum elf_ppc64_reloc_type r_type;
6768 unsigned long r_symndx;
6769 asection *sym_sec;
6770 struct elf_link_hash_entry *h;
6771 Elf_Internal_Sym *sym;
6772 bfd_vma val;
6773
6774 r_type = ELF64_R_TYPE (rel->r_info);
6775 switch (r_type)
6776 {
6777 default:
6778 continue;
6779
6780 case R_PPC64_TOC16:
6781 case R_PPC64_TOC16_LO:
6782 case R_PPC64_TOC16_HI:
6783 case R_PPC64_TOC16_HA:
6784 case R_PPC64_TOC16_DS:
6785 case R_PPC64_TOC16_LO_DS:
6786 break;
6787 }
6788
6789 r_symndx = ELF64_R_SYM (rel->r_info);
6790 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6791 r_symndx, ibfd))
6792 goto error_ret;
6793
6794 if (sym_sec != toc)
6795 continue;
6796
6797 if (h != NULL)
6798 val = h->root.u.def.value;
6799 else
6800 val = sym->st_value;
6801 val += rel->r_addend;
6802
6803 if (val >= toc->size)
6804 continue;
6805
6806 /* Anything in the toc ought to be aligned to 8 bytes.
6807 If not, don't mark as unused. */
6808 if (val & 7)
6809 continue;
6810
6811 if (skip == NULL)
6812 {
6813 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6814 if (skip == NULL)
6815 goto error_ret;
6816 }
6817
6818 skip[val >> 3] = 1;
6819 }
6820
6821 if (elf_section_data (sec)->relocs != relstart)
6822 free (relstart);
6823 }
6824
6825 if (skip == NULL)
6826 continue;
6827
6828 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6829 if (used == NULL)
6830 {
6831 error_ret:
6832 if (local_syms != NULL
6833 && symtab_hdr->contents != (unsigned char *) local_syms)
6834 free (local_syms);
6835 if (sec != NULL
6836 && relstart != NULL
6837 && elf_section_data (sec)->relocs != relstart)
6838 free (relstart);
6839 if (skip != NULL)
6840 free (skip);
6841 return FALSE;
6842 }
6843
6844 /* Now check all kept sections that might reference the toc. */
6845 for (sec = ibfd->sections;
6846 sec != NULL;
6847 /* Check the toc itself last. */
6848 sec = (sec == toc ? NULL
6849 : sec->next == toc && sec->next->next ? sec->next->next
6850 : sec->next == NULL ? toc
6851 : sec->next))
6852 {
6853 int repeat;
6854
6855 if (sec->reloc_count == 0
6856 || elf_discarded_section (sec)
6857 || get_opd_info (sec)
6858 || (sec->flags & SEC_ALLOC) == 0
6859 || (sec->flags & SEC_DEBUGGING) != 0)
6860 continue;
6861
6862 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6863 if (relstart == NULL)
6864 goto error_ret;
6865
6866 /* Mark toc entries referenced as used. */
6867 repeat = 0;
6868 do
6869 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6870 {
6871 enum elf_ppc64_reloc_type r_type;
6872 unsigned long r_symndx;
6873 asection *sym_sec;
6874 struct elf_link_hash_entry *h;
6875 Elf_Internal_Sym *sym;
6876 bfd_vma val;
6877
6878 r_type = ELF64_R_TYPE (rel->r_info);
6879 switch (r_type)
6880 {
6881 case R_PPC64_TOC16:
6882 case R_PPC64_TOC16_LO:
6883 case R_PPC64_TOC16_HI:
6884 case R_PPC64_TOC16_HA:
6885 case R_PPC64_TOC16_DS:
6886 case R_PPC64_TOC16_LO_DS:
6887 /* In case we're taking addresses of toc entries. */
6888 case R_PPC64_ADDR64:
6889 break;
6890
6891 default:
6892 continue;
6893 }
6894
6895 r_symndx = ELF64_R_SYM (rel->r_info);
6896 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6897 r_symndx, ibfd))
6898 {
6899 free (used);
6900 goto error_ret;
6901 }
6902
6903 if (sym_sec != toc)
6904 continue;
6905
6906 if (h != NULL)
6907 val = h->root.u.def.value;
6908 else
6909 val = sym->st_value;
6910 val += rel->r_addend;
6911
6912 if (val >= toc->size)
6913 continue;
6914
6915 /* For the toc section, we only mark as used if
6916 this entry itself isn't unused. */
6917 if (sec == toc
6918 && !used[val >> 3]
6919 && (used[rel->r_offset >> 3]
6920 || !skip[rel->r_offset >> 3]))
6921 /* Do all the relocs again, to catch reference
6922 chains. */
6923 repeat = 1;
6924
6925 used[val >> 3] = 1;
6926 }
6927 while (repeat);
6928 }
6929
6930 /* Merge the used and skip arrays. Assume that TOC
6931 doublewords not appearing as either used or unused belong
6932 to to an entry more than one doubleword in size. */
6933 for (drop = skip, keep = used, last = 0, some_unused = 0;
6934 drop < skip + (toc->size + 7) / 8;
6935 ++drop, ++keep)
6936 {
6937 if (*keep)
6938 {
6939 *drop = 0;
6940 last = 0;
6941 }
6942 else if (*drop)
6943 {
6944 some_unused = 1;
6945 last = 1;
6946 }
6947 else
6948 *drop = last;
6949 }
6950
6951 free (used);
6952
6953 if (some_unused)
6954 {
6955 bfd_byte *contents, *src;
6956 unsigned long off;
6957
6958 /* Shuffle the toc contents, and at the same time convert the
6959 skip array from booleans into offsets. */
6960 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
6961 goto error_ret;
6962
6963 elf_section_data (toc)->this_hdr.contents = contents;
6964
6965 for (src = contents, off = 0, drop = skip;
6966 src < contents + toc->size;
6967 src += 8, ++drop)
6968 {
6969 if (*drop)
6970 {
6971 *drop = (unsigned long) -1;
6972 off += 8;
6973 }
6974 else if (off != 0)
6975 {
6976 *drop = off;
6977 memcpy (src - off, src, 8);
6978 }
6979 }
6980 toc->rawsize = toc->size;
6981 toc->size = src - contents - off;
6982
6983 /* Read toc relocs. */
6984 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE);
6985 if (relstart == NULL)
6986 goto error_ret;
6987
6988 /* Remove unused toc relocs, and adjust those we keep. */
6989 wrel = relstart;
6990 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
6991 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
6992 {
6993 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
6994 wrel->r_info = rel->r_info;
6995 wrel->r_addend = rel->r_addend;
6996 ++wrel;
6997 }
6998 toc->reloc_count = wrel - relstart;
6999
7000 /* Adjust addends for relocs against the toc section sym. */
7001 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7002 {
7003 if (sec->reloc_count == 0
7004 || elf_discarded_section (sec))
7005 continue;
7006
7007 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7008 TRUE);
7009 if (relstart == NULL)
7010 goto error_ret;
7011
7012 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7013 {
7014 enum elf_ppc64_reloc_type r_type;
7015 unsigned long r_symndx;
7016 asection *sym_sec;
7017 struct elf_link_hash_entry *h;
7018 Elf_Internal_Sym *sym;
7019
7020 r_type = ELF64_R_TYPE (rel->r_info);
7021 switch (r_type)
7022 {
7023 default:
7024 continue;
7025
7026 case R_PPC64_TOC16:
7027 case R_PPC64_TOC16_LO:
7028 case R_PPC64_TOC16_HI:
7029 case R_PPC64_TOC16_HA:
7030 case R_PPC64_TOC16_DS:
7031 case R_PPC64_TOC16_LO_DS:
7032 case R_PPC64_ADDR64:
7033 break;
7034 }
7035
7036 r_symndx = ELF64_R_SYM (rel->r_info);
7037 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7038 r_symndx, ibfd))
7039 goto error_ret;
7040
7041 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7042 continue;
7043
7044 rel->r_addend -= skip[rel->r_addend >> 3];
7045 }
7046 }
7047
7048 /* We shouldn't have local or global symbols defined in the TOC,
7049 but handle them anyway. */
7050 if (local_syms != NULL)
7051 {
7052 Elf_Internal_Sym *sym;
7053
7054 for (sym = local_syms;
7055 sym < local_syms + symtab_hdr->sh_info;
7056 ++sym)
7057 if (sym->st_shndx != SHN_UNDEF
7058 && (sym->st_shndx < SHN_LORESERVE
7059 || sym->st_shndx > SHN_HIRESERVE)
7060 && sym->st_value != 0
7061 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7062 {
7063 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7064 sym->st_value -= skip[sym->st_value >> 3];
7065 else
7066 {
7067 (*_bfd_error_handler)
7068 (_("%s defined in removed toc entry"),
be8dd2ca 7069 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
c5614fa4
AM		 7070 sym->st_value = 0;
7071 sym->st_shndx = SHN_ABS;
7072 }
7073 symtab_hdr->contents = (unsigned char *) local_syms;
7074 }
7075 }
7076
7077 /* Finally, adjust any global syms defined in the toc. */
7078 if (toc_inf.global_toc_syms)
7079 {
7080 toc_inf.toc = toc;
7081 toc_inf.skip = skip;
7082 toc_inf.global_toc_syms = FALSE;
7083 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7084 &toc_inf);
7085 }
7086 }
7087
7088 if (local_syms != NULL
7089 && symtab_hdr->contents != (unsigned char *) local_syms)
7090 {
7091 if (!info->keep_memory)
7092 free (local_syms);
7093 else
7094 symtab_hdr->contents = (unsigned char *) local_syms;
7095 }
7096 free (skip);
7097 }
7098
7099 return TRUE;
7100}
7101
65f38f15
AM		 7102/* Allocate space in .plt, .got and associated reloc sections for
7103 dynamic relocs. */
5bd4f169 7104
b34976b6 7105static bfd_boolean
4ce794b7 7106allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7107{
65f38f15
AM		 7108 struct bfd_link_info *info;
7109 struct ppc_link_hash_table *htab;
5bd4f169 7110 asection *s;
65f38f15
AM		 7111 struct ppc_link_hash_entry *eh;
7112 struct ppc_dyn_relocs *p;
411e1bfb 7113 struct got_entry *gent;
5bd4f169 7114
e92d460e 7115 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7116 return TRUE;
5bd4f169 7117
e92d460e
AM		 7118 if (h->root.type == bfd_link_hash_warning)
7119 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7120
65f38f15
AM		 7121 info = (struct bfd_link_info *) inf;
7122 htab = ppc_hash_table (info);
5bd4f169 7123
65f38f15 7124 if (htab->elf.dynamic_sections_created
411e1bfb 7125 && h->dynindx != -1
9c7a29a3 7126 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7127 {
411e1bfb
AM		 7128 struct plt_entry *pent;
7129 bfd_boolean doneone = FALSE;
7130 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7131 if (pent->plt.refcount > 0)
7132 {
411e1bfb
AM		 7133 /* If this is the first .plt entry, make room for the special
7134 first entry. */
4ce794b7 7135 s = htab->plt;
eea6121a
AM		 7136 if (s->size == 0)
7137 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7138
eea6121a 7139 pent->plt.offset = s->size;
411e1bfb
AM		 7140
7141 /* Make room for this entry. */
eea6121a 7142 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7143
7144 /* Make room for the .glink code. */
4ce794b7 7145 s = htab->glink;
eea6121a
AM		 7146 if (s->size == 0)
7147 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7148 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7149 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7150 s->size += 4;
7151 s->size += 2*4;
411e1bfb
AM		 7152
7153 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7154 s = htab->relplt;
eea6121a 7155 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7156 doneone = TRUE;
7157 }
7158 else
7159 pent->plt.offset = (bfd_vma) -1;
7160 if (!doneone)
65f38f15 7161 {
411e1bfb 7162 h->plt.plist = NULL;
f5385ebf 7163 h->needs_plt = 0;
65f38f15
AM		 7164 }
7165 }
7166 else
7167 {
411e1bfb 7168 h->plt.plist = NULL;
f5385ebf 7169 h->needs_plt = 0;
65f38f15
AM		 7170 }
7171
951fd09b
AM		 7172 eh = (struct ppc_link_hash_entry *) h;
7173 /* Run through the TLS GD got entries first if we're changing them
7174 to TPREL. */
e7b938ca 7175 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7176 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7177 if (gent->got.refcount > 0
7178 && (gent->tls_type & TLS_GD) != 0)
7179 {
7180 /* This was a GD entry that has been converted to TPREL. If
7181 there happens to be a TPREL entry we can use that one. */
7182 struct got_entry *ent;
7183 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7184 if (ent->got.refcount > 0
7185 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7186 && ent->addend == gent->addend
7187 && ent->owner == gent->owner)
951fd09b
AM		 7188 {
7189 gent->got.refcount = 0;
7190 break;
7191 }
7192
7193 /* If not, then we'll be using our own TPREL entry. */
7194 if (gent->got.refcount != 0)
7195 gent->tls_type = TLS_TLS | TLS_TPREL;
7196 }
7197
411e1bfb
AM		 7198 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7199 if (gent->got.refcount > 0)
7200 {
951fd09b
AM		 7201 bfd_boolean dyn;
7202
411e1bfb 7203 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7204 Undefined weak syms won't yet be marked as dynamic,
7205 nor will all TLS symbols. */
411e1bfb 7206 if (h->dynindx == -1
f5385ebf 7207 && !h->forced_local)
411e1bfb 7208 {
c152c796 7209 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7210 return FALSE;
7211 }
65f38f15 7212
d881513a 7213 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7214 && !h->def_dynamic)
411e1bfb 7215 {
e717da7e 7216 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7217 continue;
411e1bfb 7218 }
951fd09b 7219
e717da7e 7220 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7221 gent->got.offset = s->size;
7222 s->size
d881513a 7223 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7224 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7225 if ((info->shared
7226 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7227 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7228 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7229 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7230 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7231 ? 2 * sizeof (Elf64_External_Rela)
7232 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7233 }
7234 else
7235 gent->got.offset = (bfd_vma) -1;
65f38f15 7236
65f38f15 7237 if (eh->dyn_relocs == NULL)
b34976b6 7238 return TRUE;
65f38f15
AM		 7239
7240 /* In the shared -Bsymbolic case, discard space allocated for
7241 dynamic pc-relative relocs against symbols which turn out to be
7242 defined in regular objects. For the normal shared case, discard
7243 space for relocs that have become local due to symbol visibility
7244 changes. */
7245
7246 if (info->shared)
7247 {
9c7a29a3
AM		 7248 /* Relocs that use pc_count are those that appear on a call insn,
7249 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7250 generated via assembly. We want calls to protected symbols to
7251 resolve directly to the function rather than going via the plt.
7252 If people want function pointer comparisons to work as expected
7253 then they should avoid writing weird assembly. */
09695f56 7254 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7255 {
7256 struct ppc_dyn_relocs **pp;
7257
7258 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7259 {
65f38f15
AM		 7260 p->count -= p->pc_count;
7261 p->pc_count = 0;
7262 if (p->count == 0)
7263 *pp = p->next;
7264 else
7265 pp = &p->next;
5bd4f169 7266 }
65f38f15 7267 }
4e795f50
AM		 7268
7269 /* Also discard relocs on undefined weak syms with non-default
7270 visibility. */
7271 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7272 && h->root.type == bfd_link_hash_undefweak)
7273 eh->dyn_relocs = NULL;
65f38f15 7274 }
f4656909 7275 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7276 {
7277 /* For the non-shared case, discard space for relocs against
7278 symbols which turn out to need copy relocs or are not
7279 dynamic. */
7280
f5385ebf
AM		 7281 if (!h->non_got_ref
7282 && h->def_dynamic
7283 && !h->def_regular)
65f38f15
AM		 7284 {
7285 /* Make sure this symbol is output as a dynamic symbol.
7286 Undefined weak syms won't yet be marked as dynamic. */
7287 if (h->dynindx == -1
f5385ebf 7288 && !h->forced_local)
65f38f15 7289 {
c152c796 7290 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7291 return FALSE;
65f38f15
AM		 7292 }
7293
7294 /* If that succeeded, we know we'll be keeping all the
7295 relocs. */
7296 if (h->dynindx != -1)
7297 goto keep;
7298 }
7299
7300 eh->dyn_relocs = NULL;
7301
ec338859 7302 keep: ;
65f38f15
AM		 7303 }
7304
7305 /* Finally, allocate space. */
7306 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7307 {
7308 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7309 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7310 }
7311
b34976b6 7312 return TRUE;
65f38f15
AM		 7313}
7314
7315/* Find any dynamic relocs that apply to read-only sections. */
7316
b34976b6 7317static bfd_boolean
4ce794b7 7318readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7319{
7320 struct ppc_link_hash_entry *eh;
7321 struct ppc_dyn_relocs *p;
7322
e92d460e
AM		 7323 if (h->root.type == bfd_link_hash_warning)
7324 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7325
65f38f15
AM		 7326 eh = (struct ppc_link_hash_entry *) h;
7327 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7328 {
7329 asection *s = p->sec->output_section;
7330
7331 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7332 {
4ce794b7 7333 struct bfd_link_info *info = inf;
65f38f15
AM		 7334
7335 info->flags |= DF_TEXTREL;
7336
7337 /* Not an error, just cut short the traversal. */
b34976b6 7338 return FALSE;
65f38f15
AM		 7339 }
7340 }
b34976b6 7341 return TRUE;
65f38f15
AM		 7342}
7343
7344/* Set the sizes of the dynamic sections. */
7345
b34976b6 7346static bfd_boolean
4ce794b7
AM		 7347ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7348 struct bfd_link_info *info)
65f38f15
AM		 7349{
7350 struct ppc_link_hash_table *htab;
7351 bfd *dynobj;
7352 asection *s;
b34976b6 7353 bfd_boolean relocs;
65f38f15
AM		 7354 bfd *ibfd;
7355
7356 htab = ppc_hash_table (info);
7357 dynobj = htab->elf.dynobj;
7358 if (dynobj == NULL)
7359 abort ();
7360
7361 if (htab->elf.dynamic_sections_created)
7362 {
7363 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7364 if (info->executable)
65f38f15
AM		 7365 {
7366 s = bfd_get_section_by_name (dynobj, ".interp");
7367 if (s == NULL)
7368 abort ();
eea6121a 7369 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7370 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7371 }
7372 }
7373
7374 /* Set up .got offsets for local syms, and space for local dynamic
7375 relocs. */
7376 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7377 {
411e1bfb
AM		 7378 struct got_entry **lgot_ents;
7379 struct got_entry **end_lgot_ents;
e7b938ca 7380 char *lgot_masks;
65f38f15
AM		 7381 bfd_size_type locsymcount;
7382 Elf_Internal_Shdr *symtab_hdr;
7383 asection *srel;
7384
ee75fd95 7385 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7386 continue;
7387
e717da7e
AM		 7388 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7389 {
7390 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7391 ppc64_tlsld_got (ibfd)->offset = s->size;
7392 s->size += 16;
e717da7e
AM		 7393 if (info->shared)
7394 {
7395 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7396 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7397 }
7398 }
7399 else
7400 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7401
65f38f15
AM		 7402 for (s = ibfd->sections; s != NULL; s = s->next)
7403 {
ec338859 7404 struct ppc_dyn_relocs *p;
65f38f15 7405
ec338859
AM		 7406 for (p = *((struct ppc_dyn_relocs **)
7407 &elf_section_data (s)->local_dynrel);
7408 p != NULL;
7409 p = p->next)
65f38f15 7410 {
ec338859
AM		 7411 if (!bfd_is_abs_section (p->sec)
7412 && bfd_is_abs_section (p->sec->output_section))
7413 {
7414 /* Input section has been discarded, either because
7415 it is a copy of a linkonce section or due to
7416 linker script /DISCARD/, so we'll be discarding
7417 the relocs too. */
7418 }
248866a8 7419 else if (p->count != 0)
ec338859
AM		 7420 {
7421 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7422 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7423 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7424 info->flags |= DF_TEXTREL;
ec338859 7425 }
65f38f15
AM		 7426 }
7427 }
7428
411e1bfb
AM		 7429 lgot_ents = elf_local_got_ents (ibfd);
7430 if (!lgot_ents)
65f38f15
AM		 7431 continue;
7432
7433 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7434 locsymcount = symtab_hdr->sh_info;
411e1bfb 7435 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7436 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7437 s = ppc64_elf_tdata (ibfd)->got;
7438 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7439 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7440 {
411e1bfb
AM		 7441 struct got_entry *ent;
7442
7443 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7444 if (ent->got.refcount > 0)
7445 {
e7b938ca 7446 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7447 {
e717da7e 7448 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7449 {
eea6121a
AM		 7450 ppc64_tlsld_got (ibfd)->offset = s->size;
7451 s->size += 16;
411e1bfb 7452 if (info->shared)
eea6121a 7453 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7454 }
e717da7e 7455 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7456 }
7457 else
7458 {
eea6121a 7459 ent->got.offset = s->size;
e7b938ca 7460 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7461 {
eea6121a 7462 s->size += 16;
411e1bfb 7463 if (info->shared)
eea6121a 7464 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7465 }
7466 else
7467 {
eea6121a 7468 s->size += 8;
411e1bfb 7469 if (info->shared)
eea6121a 7470 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7471 }
7472 }
7473 }
7474 else
7475 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7476 }
7477 }
7478
7479 /* Allocate global sym .plt and .got entries, and space for global
7480 sym dynamic relocs. */
4ce794b7 7481 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7482
7483 /* We now have determined the sizes of the various dynamic sections.
7484 Allocate memory for them. */
b34976b6 7485 relocs = FALSE;
65f38f15
AM		 7486 for (s = dynobj->sections; s != NULL; s = s->next)
7487 {
7488 if ((s->flags & SEC_LINKER_CREATED) == 0)
7489 continue;
7490
4ce794b7 7491 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7492 /* These haven't been allocated yet; don't strip. */
7493 continue;
e717da7e
AM		 7494 else if (s == htab->got
7495 || s == htab->plt
4ce794b7 7496 || s == htab->glink)
65f38f15
AM		 7497 {
7498 /* Strip this section if we don't need it; see the
7499 comment below. */
5bd4f169 7500 }
65f38f15 7501 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7502 {
eea6121a 7503 if (s->size == 0)
5bd4f169
AM		 7504 {
7505 /* If we don't need this section, strip it from the
7506 output file. This is mostly to handle .rela.bss and
7507 .rela.plt. We must create both sections in
7508 create_dynamic_sections, because they must be created
7509 before the linker maps input sections to output
7510 sections. The linker does that before
7511 adjust_dynamic_symbol is called, and it is that
7512 function which decides whether anything needs to go
7513 into these sections. */
5bd4f169
AM		 7514 }
7515 else
7516 {
4ce794b7 7517 if (s != htab->relplt)
b34976b6 7518 relocs = TRUE;
5bd4f169
AM		 7519
7520 /* We use the reloc_count field as a counter if we need
7521 to copy relocs into the output file. */
7522 s->reloc_count = 0;
7523 }
7524 }
65f38f15 7525 else
5bd4f169
AM		 7526 {
7527 /* It's not one of our sections, so don't allocate space. */
7528 continue;
7529 }
7530
eea6121a 7531 if (s->size == 0)
5bd4f169
AM		 7532 {
7533 _bfd_strip_section_from_output (info, s);
7534 continue;
7535 }
7536
5f333394 7537 /* .plt is in the bss section. We don't initialise it. */
680a3378 7538 if (s == htab->plt)
5f333394
AM		 7539 continue;
7540
65f38f15
AM		 7541 /* Allocate memory for the section contents. We use bfd_zalloc
7542 here in case unused entries are not reclaimed before the
7543 section's contents are written out. This should not happen,
411e1bfb
AM		 7544 but this way if it does we get a R_PPC64_NONE reloc in .rela
7545 sections instead of garbage.
7546 We also rely on the section contents being zero when writing
7547 the GOT. */
eea6121a 7548 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7549 if (s->contents == NULL)
b34976b6 7550 return FALSE;
5bd4f169
AM		 7551 }
7552
e717da7e
AM		 7553 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7554 {
ee75fd95 7555 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7556 continue;
7557
e717da7e
AM		 7558 s = ppc64_elf_tdata (ibfd)->got;
7559 if (s != NULL && s != htab->got)
7560 {
eea6121a 7561 if (s->size == 0)
e717da7e
AM		 7562 _bfd_strip_section_from_output (info, s);
7563 else
7564 {
eea6121a 7565 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7566 if (s->contents == NULL)
7567 return FALSE;
7568 }
7569 }
7570 s = ppc64_elf_tdata (ibfd)->relgot;
7571 if (s != NULL)
7572 {
eea6121a 7573 if (s->size == 0)
e717da7e
AM		 7574 _bfd_strip_section_from_output (info, s);
7575 else
7576 {
eea6121a 7577 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7578 if (s->contents == NULL)
7579 return FALSE;
7580 relocs = TRUE;
7581 s->reloc_count = 0;
7582 }
7583 }
7584 }
7585
e86ce104 7586 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7587 {
7588 /* Add some entries to the .dynamic section. We fill in the
7589 values later, in ppc64_elf_finish_dynamic_sections, but we
7590 must add the entries now so that we get the correct size for
7591 the .dynamic section. The DT_DEBUG entry is filled in by the
7592 dynamic linker and used by the debugger. */
dc810e39 7593#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7594 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7595
36af4a4e 7596 if (info->executable)
5bd4f169 7597 {
dc810e39 7598 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7599 return FALSE;
5bd4f169
AM		 7600 }
7601
eea6121a 7602 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7603 {
dc810e39
AM		 7604 if (!add_dynamic_entry (DT_PLTGOT, 0)
7605 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7606 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7607 || !add_dynamic_entry (DT_JMPREL, 0)
7608 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7609 return FALSE;
5bd4f169
AM		 7610 }
7611
19397422
AM		 7612 if (NO_OPD_RELOCS)
7613 {
7614 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7615 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7616 return FALSE;
19397422
AM		 7617 }
7618
5bd4f169
AM		 7619 if (relocs)
7620 {
dc810e39
AM		 7621 if (!add_dynamic_entry (DT_RELA, 0)
7622 || !add_dynamic_entry (DT_RELASZ, 0)
7623 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7624 return FALSE;
5bd4f169 7625
65f38f15
AM		 7626 /* If any dynamic relocs apply to a read-only section,
7627 then we need a DT_TEXTREL entry. */
248866a8 7628 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7629 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7630
65f38f15 7631 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7632 {
65f38f15 7633 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7634 return FALSE;
5bd4f169 7635 }
5bd4f169 7636 }
5bd4f169 7637 }
65f38f15 7638#undef add_dynamic_entry
5bd4f169 7639
b34976b6 7640 return TRUE;
5bd4f169
AM		 7641}
7642
721956f4 7643/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7644
4ce794b7
AM		 7645static inline enum ppc_stub_type
7646ppc_type_of_stub (asection *input_sec,
7647 const Elf_Internal_Rela *rel,
7648 struct ppc_link_hash_entry **hash,
7649 bfd_vma destination)
5bd4f169 7650{
721956f4
AM		 7651 struct ppc_link_hash_entry *h = *hash;
7652 bfd_vma location;
7653 bfd_vma branch_offset;
7654 bfd_vma max_branch_offset;
4ce794b7 7655 enum elf_ppc64_reloc_type r_type;
5bd4f169 7656
721956f4
AM		 7657 if (h != NULL)
7658 {
7659 if (h->oh != NULL
8387904d
AM		 7660 && h->oh->is_func_descriptor)
7661 h = h->oh;
7662
7663 if (h->elf.dynindx != -1)
5bd4f169 7664 {
411e1bfb 7665 struct plt_entry *ent;
8387904d
AM		 7666
7667 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7668 if (ent->addend == rel->r_addend
7669 && ent->plt.offset != (bfd_vma) -1)
7670 {
8387904d 7671 *hash = h;
411e1bfb
AM		 7672 return ppc_stub_plt_call;
7673 }
5bd4f169
AM		 7674 }
7675
ee7de3e6
AM		 7676 if (!(h->elf.root.type == bfd_link_hash_defined
7677 || h->elf.root.type == bfd_link_hash_defweak)
7678 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7679 return ppc_stub_none;
5d1634d7 7680 }
5d1634d7 7681
721956f4
AM		 7682 /* Determine where the call point is. */
7683 location = (input_sec->output_offset
7684 + input_sec->output_section->vma
7685 + rel->r_offset);
5d1634d7 7686
721956f4
AM		 7687 branch_offset = destination - location;
7688 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7689
721956f4
AM		 7690 /* Determine if a long branch stub is needed. */
7691 max_branch_offset = 1 << 25;
4ce794b7 7692 if (r_type != R_PPC64_REL24)
721956f4 7693 max_branch_offset = 1 << 15;
5d1634d7 7694
721956f4
AM		 7695 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7696 /* We need a stub. Figure out whether a long_branch or plt_branch
7697 is needed later. */
7698 return ppc_stub_long_branch;
5d1634d7 7699
721956f4 7700 return ppc_stub_none;
5d1634d7
AM		 7701}
7702
7703/* Build a .plt call stub. */
7704
4ce794b7
AM		 7705static inline bfd_byte *
7706build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7707{
7708#define PPC_LO(v) ((v) & 0xffff)
7709#define PPC_HI(v) (((v) >> 16) & 0xffff)
7710#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7711
5d1634d7 7712 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7713 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7714 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7715 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7716 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7717 offset += 8;
7718 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7719 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7720 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7721 offset += 8;
7722 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7723 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7724 bfd_put_32 (obfd, BCTR, p), p += 4;
7725 return p;
7726}
7727
b34976b6 7728static bfd_boolean
4ce794b7 7729ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7730{
721956f4
AM		 7731 struct ppc_stub_hash_entry *stub_entry;
7732 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7733 struct bfd_link_info *info;
7734 struct ppc_link_hash_table *htab;
721956f4
AM		 7735 bfd_byte *loc;
7736 bfd_byte *p;
7737 unsigned int indx;
411e1bfb 7738 struct plt_entry *ent;
ee75fd95 7739 bfd_vma dest, off;
721956f4 7740 int size;
5d1634d7 7741
721956f4
AM		 7742 /* Massage our args to the form they really have. */
7743 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7744 info = in_arg;
5d1634d7 7745
5d1634d7
AM		 7746 htab = ppc_hash_table (info);
7747
721956f4 7748 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7749 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7750 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7751
4ce794b7 7752 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7753 switch (stub_entry->stub_type)
5d1634d7 7754 {
721956f4 7755 case ppc_stub_long_branch:
ad8e1ba5 7756 case ppc_stub_long_branch_r2off:
721956f4 7757 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7758 off = dest = (stub_entry->target_value
7759 + stub_entry->target_section->output_offset
7760 + stub_entry->target_section->output_section->vma);
5d1634d7 7761
721956f4
AM		 7762 /* And this is where we are coming from. */
7763 off -= (stub_entry->stub_offset
97b639ba
AM		 7764 + stub_entry->stub_sec->output_offset
7765 + stub_entry->stub_sec->output_section->vma);
e86ce104 7766
ad8e1ba5
AM		 7767 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7768 size = 4;
7769 else
7770 {
7771 bfd_vma r2off;
7772
7773 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7774 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7775 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7776 loc += 4;
97b639ba 7777 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7778 loc += 4;
97b639ba 7779 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7780 loc += 4;
7781 off -= 12;
7782 size = 16;
7783 }
97b639ba 7784 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 7785
7786 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 7787
7788 if (info->emitrelocations)
7789 {
7790 Elf_Internal_Rela *relocs, *r;
7791 struct bfd_elf_section_data *elfsec_data;
7792
7793 elfsec_data = elf_section_data (stub_entry->stub_sec);
7794 relocs = elfsec_data->relocs;
7795 if (relocs == NULL)
7796 {
7797 bfd_size_type relsize;
7798 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7799 relocs = bfd_alloc (htab->stub_bfd, relsize);
7800 if (relocs == NULL)
7801 return FALSE;
7802 elfsec_data->relocs = relocs;
7803 elfsec_data->rel_hdr.sh_size = relsize;
7804 elfsec_data->rel_hdr.sh_entsize = 24;
7805 stub_entry->stub_sec->reloc_count = 0;
7806 }
7807 r = relocs + stub_entry->stub_sec->reloc_count;
7808 stub_entry->stub_sec->reloc_count += 1;
7809 r->r_offset = loc - stub_entry->stub_sec->contents;
7810 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7811 r->r_addend = dest;
7812 if (stub_entry->h != NULL)
7813 {
7814 struct elf_link_hash_entry **hashes;
7815 unsigned long symndx;
7816 struct ppc_link_hash_entry *h;
7817
7818 hashes = elf_sym_hashes (htab->stub_bfd);
7819 if (hashes == NULL)
7820 {
7821 bfd_size_type hsize;
7822
7823 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7824 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7825 if (hashes == NULL)
7826 return FALSE;
7827 elf_sym_hashes (htab->stub_bfd) = hashes;
7828 htab->stub_globals = 1;
7829 }
7830 symndx = htab->stub_globals++;
7831 h = stub_entry->h;
7832 hashes[symndx] = &h->elf;
7833 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7834 if (h->oh != NULL && h->oh->is_func)
7835 h = h->oh;
7836 if (h->elf.root.u.def.section != stub_entry->target_section)
7837 /* H is an opd symbol. The addend must be zero. */
7838 r->r_addend = 0;
7839 else
7840 {
7841 off = (h->elf.root.u.def.value
7842 + h->elf.root.u.def.section->output_offset
7843 + h->elf.root.u.def.section->output_section->vma);
7844 r->r_addend -= off;
7845 }
7846 }
7847 }
721956f4 7848 break;
e86ce104 7849
721956f4 7850 case ppc_stub_plt_branch:
ad8e1ba5 7851 case ppc_stub_plt_branch_r2off:
721956f4
AM		 7852 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7853 stub_entry->root.string + 9,
b34976b6 7854 FALSE, FALSE);
721956f4
AM		 7855 if (br_entry == NULL)
7856 {
7857 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7858 stub_entry->root.string + 9);
b34976b6
AM		 7859 htab->stub_error = TRUE;
7860 return FALSE;
721956f4
AM		 7861 }
7862
7863 off = (stub_entry->target_value
7864 + stub_entry->target_section->output_offset
7865 + stub_entry->target_section->output_section->vma);
7866
4ce794b7
AM		 7867 bfd_put_64 (htab->brlt->owner, off,
7868 htab->brlt->contents + br_entry->offset);
721956f4 7869
ee75fd95 7870 if (htab->relbrlt != NULL)
721956f4
AM		 7871 {
7872 /* Create a reloc for the branch lookup table entry. */
7873 Elf_Internal_Rela rela;
ad8e1ba5 7874 bfd_byte *rl;
5d1634d7 7875
721956f4 7876 rela.r_offset = (br_entry->offset
4ce794b7
AM		 7877 + htab->brlt->output_offset
7878 + htab->brlt->output_section->vma);
721956f4
AM		 7879 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7880 rela.r_addend = off;
7881
4ce794b7
AM		 7882 rl = htab->relbrlt->contents;
7883 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7884 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 7885 }
7886
7887 off = (br_entry->offset
4ce794b7
AM		 7888 + htab->brlt->output_offset
7889 + htab->brlt->output_section->vma
7890 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 7891 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 7892
ad8e1ba5 7893 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 7894 {
7895 (*_bfd_error_handler)
e86ce104 7896 (_("linkage table error against `%s'"),
721956f4 7897 stub_entry->root.string);
5d1634d7 7898 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 7899 htab->stub_error = TRUE;
7900 return FALSE;
5d1634d7 7901 }
41bd81ab 7902
721956f4 7903 indx = off;
ad8e1ba5
AM		 7904 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7905 {
97b639ba 7906 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 7907 loc += 4;
97b639ba 7908 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 7909 size = 16;
7910 }
7911 else
7912 {
7913 bfd_vma r2off;
7914
7915 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7916 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7917 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7918 loc += 4;
97b639ba 7919 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 7920 loc += 4;
97b639ba 7921 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 7922 loc += 4;
97b639ba 7923 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7924 loc += 4;
97b639ba 7925 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7926 size = 28;
7927 }
7928 loc += 4;
97b639ba 7929 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 7930 loc += 4;
97b639ba 7931 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 7932 break;
5d1634d7 7933
721956f4 7934 case ppc_stub_plt_call:
c862ae31
AM		 7935 /* Do the best we can for shared libraries built without
7936 exporting ".foo" for each "foo". This can happen when symbol
7937 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 7938 if (stub_entry->h->oh != NULL
7939 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 7940 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 7941 {
7942 /* Point the symbol at the stub. There may be multiple stubs,
7943 we don't really care; The main thing is to make this sym
8f3bab57
AM		 7944 defined somewhere. Maybe defining the symbol in the stub
7945 section is a silly idea. If we didn't do this, htab->top_id
7946 could disappear. */
34814b9f
AM		 7947 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
7948 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
7949 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 7950 }
7951
721956f4 7952 /* Now build the stub. */
411e1bfb
AM		 7953 off = (bfd_vma) -1;
7954 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7955 if (ent->addend == stub_entry->addend)
7956 {
7957 off = ent->plt.offset;
7958 break;
7959 }
721956f4
AM		 7960 if (off >= (bfd_vma) -2)
7961 abort ();
7962
7963 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 7964 off += (htab->plt->output_offset
7965 + htab->plt->output_section->vma
7966 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 7967 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 7968
ad8e1ba5 7969 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 7970 {
7971 (*_bfd_error_handler)
7972 (_("linkage table error against `%s'"),
7973 stub_entry->h->elf.root.root.string);
7974 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 7975 htab->stub_error = TRUE;
7976 return FALSE;
721956f4
AM		 7977 }
7978
97b639ba 7979 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 7980 size = p - loc;
7981 break;
7982
7983 default:
7984 BFD_FAIL ();
b34976b6 7985 return FALSE;
721956f4
AM		 7986 }
7987
eea6121a 7988 stub_entry->stub_sec->size += size;
97b639ba 7989
ee75fd95 7990 if (htab->emit_stub_syms)
97b639ba
AM		 7991 {
7992 struct elf_link_hash_entry *h;
ee75fd95
AM		 7993 size_t len1, len2;
7994 char *name;
7995 const char *const stub_str[] = { "long_branch",
7996 "long_branch_r2off",
7997 "plt_branch",
7998 "plt_branch_r2off",
7999 "plt_call" };
8000
8001 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8002 len2 = strlen (stub_entry->root.string);
8003 name = bfd_malloc (len1 + len2 + 2);
8004 if (name == NULL)
8005 return FALSE;
8006 memcpy (name, stub_entry->root.string, 9);
8007 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8008 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8009 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8010 if (h == NULL)
8011 return FALSE;
8012 if (h->root.type == bfd_link_hash_new)
8013 {
8014 h->root.type = bfd_link_hash_defined;
8015 h->root.u.def.section = stub_entry->stub_sec;
8016 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8017 h->ref_regular = 1;
8018 h->def_regular = 1;
8019 h->ref_regular_nonweak = 1;
8020 h->forced_local = 1;
8021 h->non_elf = 0;
97b639ba
AM		 8022 }
8023 }
8024
b34976b6 8025 return TRUE;
721956f4
AM		 8026}
8027
8028/* As above, but don't actually build the stub. Just bump offset so
8029 we know stub section sizes, and select plt_branch stubs where
8030 long_branch stubs won't do. */
8031
b34976b6 8032static bfd_boolean
4ce794b7 8033ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8034{
8035 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8036 struct bfd_link_info *info;
721956f4
AM		 8037 struct ppc_link_hash_table *htab;
8038 bfd_vma off;
8039 int size;
8040
8041 /* Massage our args to the form they really have. */
8042 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8043 info = in_arg;
8044
8045 htab = ppc_hash_table (info);
721956f4
AM		 8046
8047 if (stub_entry->stub_type == ppc_stub_plt_call)
8048 {
411e1bfb 8049 struct plt_entry *ent;
58ac9f71 8050 off = (bfd_vma) -1;
411e1bfb
AM		 8051 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8052 if (ent->addend == stub_entry->addend)
8053 {
8054 off = ent->plt.offset & ~(bfd_vma) 1;
8055 break;
8056 }
58ac9f71 8057 if (off >= (bfd_vma) -2)
411e1bfb 8058 abort ();
4ce794b7
AM		 8059 off += (htab->plt->output_offset
8060 + htab->plt->output_section->vma
8061 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8062 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8063
ad8e1ba5 8064 size = PLT_CALL_STUB_SIZE;
4ce794b7 8065 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8066 size += 4;
8067 }
8068 else
8069 {
ad8e1ba5
AM		 8070 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8071 variants. */
721956f4
AM		 8072 off = (stub_entry->target_value
8073 + stub_entry->target_section->output_offset
8074 + stub_entry->target_section->output_section->vma);
eea6121a 8075 off -= (stub_entry->stub_sec->size
721956f4
AM		 8076 + stub_entry->stub_sec->output_offset
8077 + stub_entry->stub_sec->output_section->vma);
8078
ad8e1ba5
AM		 8079 /* Reset the stub type from the plt variant in case we now
8080 can reach with a shorter stub. */
8081 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8082 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8083
8084 size = 4;
8085 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8086 {
8087 off -= 12;
8088 size = 16;
8089 }
8090
8091 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8092 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8093 {
8094 struct ppc_branch_hash_entry *br_entry;
8095
8096 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8097 stub_entry->root.string + 9,
b34976b6 8098 TRUE, FALSE);
721956f4
AM		 8099 if (br_entry == NULL)
8100 {
8101 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8102 stub_entry->root.string + 9);
b34976b6
AM		 8103 htab->stub_error = TRUE;
8104 return FALSE;
721956f4
AM		 8105 }
8106
8107 if (br_entry->iter != htab->stub_iteration)
8108 {
8109 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8110 br_entry->offset = htab->brlt->size;
8111 htab->brlt->size += 8;
63bc6f6c 8112
ee75fd95 8113 if (htab->relbrlt != NULL)
eea6121a 8114 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8115 }
ad8e1ba5
AM		 8116
8117 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8118 size = 16;
ad8e1ba5
AM		 8119 if (stub_entry->stub_type != ppc_stub_plt_branch)
8120 size = 28;
721956f4 8121 }
ee75fd95
AM		 8122
8123 if (info->emitrelocations
8124 && (stub_entry->stub_type == ppc_stub_long_branch
8125 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8126 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8127 }
8128
eea6121a 8129 stub_entry->stub_sec->size += size;
b34976b6 8130 return TRUE;
721956f4
AM		 8131}
8132
8133/* Set up various things so that we can make a list of input sections
8134 for each output section included in the link. Returns -1 on error,
cedb70c5 8135 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8136
8137int
4ce794b7 8138ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
721956f4
AM		 8139{
8140 bfd *input_bfd;
734b6cf9 8141 int top_id, top_index, id;
721956f4 8142 asection *section;
734b6cf9 8143 asection **input_list;
721956f4
AM		 8144 bfd_size_type amt;
8145 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8146
4ce794b7 8147 if (htab->brlt == NULL)
721956f4
AM		 8148 return 0;
8149
1e2f5b6e 8150 /* Find the top input section id. */
3d6f9012 8151 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8152 input_bfd != NULL;
8153 input_bfd = input_bfd->link_next)
8154 {
721956f4
AM		 8155 for (section = input_bfd->sections;
8156 section != NULL;
8157 section = section->next)
8158 {
8159 if (top_id < section->id)
8160 top_id = section->id;
8161 }
8162 }
721956f4 8163
8f3bab57 8164 htab->top_id = top_id;
721956f4 8165 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8166 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8167 if (htab->stub_group == NULL)
8168 return -1;
8169
3d6f9012
AM		 8170 /* Set toc_off for com, und, abs and ind sections. */
8171 for (id = 0; id < 3; id++)
8172 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8173
3d6f9012 8174 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8175
8176 /* We can't use output_bfd->section_count here to find the top output
8177 section index as some sections may have been removed, and
8178 _bfd_strip_section_from_output doesn't renumber the indices. */
8179 for (section = output_bfd->sections, top_index = 0;
8180 section != NULL;
8181 section = section->next)
8182 {
8183 if (top_index < section->index)
8184 top_index = section->index;
8185 }
8186
8187 htab->top_index = top_index;
8188 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8189 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8190 htab->input_list = input_list;
8191 if (input_list == NULL)
8192 return -1;
8193
721956f4
AM		 8194 return 1;
8195}
8196
e717da7e
AM		 8197/* The linker repeatedly calls this function for each TOC input section
8198 and linker generated GOT section. Group input bfds such that the toc
8199 within a group is less than 64k in size. Will break with cute linker
8200 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8201
8202void
4ce794b7 8203ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8204{
8205 struct ppc_link_hash_table *htab = ppc_hash_table (info);
99877b66
AM		 8206 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8207 bfd_vma off = addr - htab->toc_curr;
ad8e1ba5 8208
99877b66
AM		 8209 if (off + isec->size > 0x10000)
8210 htab->toc_curr = addr;
8211
8212 elf_gp (isec->owner) = (htab->toc_curr
8213 - elf_gp (isec->output_section->owner)
8214 + TOC_BASE_OFF);
ad8e1ba5
AM		 8215}
8216
8217/* Called after the last call to the above function. */
8218
8219void
4ce794b7
AM		 8220ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
8221 struct bfd_link_info *info)
ad8e1ba5
AM		 8222{
8223 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5
AM		 8224
8225 /* toc_curr tracks the TOC offset used for code sections below in
8226 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8227 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8228}
8229
9b5ecbd0
AM		 8230/* No toc references were found in ISEC. If the code in ISEC makes no
8231 calls, then there's no need to use toc adjusting stubs when branching
8232 into ISEC. Actually, indirect calls from ISEC are OK as they will
8233 load r2. */
8234
8235static int
4ce794b7 8236toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0
AM		 8237{
8238 bfd_byte *contents;
8239 bfd_size_type i;
8240 int ret;
8241 int branch_ok;
8242
772119ce
AM		 8243 /* We know none of our code bearing sections will need toc stubs. */
8244 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8245 return 0;
8246
eea6121a 8247 if (isec->size == 0)
082c50f8
AM		 8248 return 0;
8249
9b5ecbd0
AM		 8250 /* Hack for linux kernel. .fixup contains branches, but only back to
8251 the function that hit an exception. */
8252 branch_ok = strcmp (isec->name, ".fixup") == 0;
8253
8254 contents = elf_section_data (isec)->this_hdr.contents;
8255 if (contents == NULL)
8256 {
eea6121a 8257 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
9b5ecbd0 8258 {
eea6121a
AM		 8259 if (contents != NULL)
8260 free (contents);
9b5ecbd0
AM		 8261 return -1;
8262 }
8263 if (info->keep_memory)
8264 elf_section_data (isec)->this_hdr.contents = contents;
8265 }
8266
8267 /* Code scan, because we don't necessarily have relocs on calls to
8268 static functions. */
8269 ret = 0;
eea6121a 8270 for (i = 0; i < isec->size; i += 4)
9b5ecbd0
AM		 8271 {
8272 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
8273 /* Is this a branch? */
772119ce 8274 if ((insn & (0x3f << 26)) == (18 << 26)
9b5ecbd0
AM		 8275 /* If branch and link, it's a function call. */
8276 && ((insn & 1) != 0
8277 /* Sibling calls use a plain branch. I don't know a way
8278 of deciding whether a branch is really a sibling call. */
8279 || !branch_ok))
8280 {
8281 ret = 1;
8282 break;
8283 }
8284 }
8285
8286 if (elf_section_data (isec)->this_hdr.contents != contents)
8287 free (contents);
8288 return ret;
8289}
8290
721956f4
AM		 8291/* The linker repeatedly calls this function for each input section,
8292 in the order that input sections are linked into output sections.
8293 Build lists of input sections to determine groupings between which
8294 we may insert linker stubs. */
8295
9b5ecbd0 8296bfd_boolean
4ce794b7 8297ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8298{
8299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9b5ecbd0 8300 int ret;
721956f4 8301
734b6cf9
AM		 8302 if ((isec->output_section->flags & SEC_CODE) != 0
8303 && isec->output_section->index <= htab->top_index)
721956f4 8304 {
734b6cf9 8305 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8306 /* Steal the link_sec pointer for our list. */
721956f4 8307#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8308 /* This happens to make the list in reverse order,
8309 which is what we want. */
734b6cf9
AM		 8310 PREV_SEC (isec) = *list;
8311 *list = isec;
721956f4 8312 }
ad8e1ba5
AM		 8313
8314 /* If a code section has a function that uses the TOC then we need
8315 to use the right TOC (obviously). Also, make sure that .opd gets
ee87f2da
AM		 8316 the correct TOC value for R_PPC64_TOC relocs that don't have or
8317 can't find their function symbol (shouldn't ever happen now). */
ad8e1ba5 8318 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
9b5ecbd0
AM		 8319 {
8320 if (elf_gp (isec->owner) != 0)
8321 htab->toc_curr = elf_gp (isec->owner);
8322 }
8323 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
8324 return FALSE;
8325 else
8326 isec->has_gp_reloc = ret;
ad8e1ba5
AM		 8327
8328 /* Functions that don't use the TOC can belong in any TOC group.
8329 Use the last TOC base. This happens to make _init and _fini
8330 pasting work. */
8331 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8332 return TRUE;
721956f4
AM		 8333}
8334
8335/* See whether we can group stub sections together. Grouping stub
8336 sections may result in fewer stubs. More importantly, we need to
8337 put all .init* and .fini* stubs at the beginning of the .init or
8338 .fini output sections respectively, because glibc splits the
8339 _init and _fini functions into multiple parts. Putting a stub in
8340 the middle of a function is not a good idea. */
8341
8342static void
4ce794b7
AM		 8343group_sections (struct ppc_link_hash_table *htab,
8344 bfd_size_type stub_group_size,
8345 bfd_boolean stubs_always_before_branch)
721956f4 8346{
734b6cf9
AM		 8347 asection **list = htab->input_list + htab->top_index;
8348 do
721956f4 8349 {
734b6cf9
AM		 8350 asection *tail = *list;
8351 while (tail != NULL)
721956f4 8352 {
734b6cf9
AM		 8353 asection *curr;
8354 asection *prev;
8355 bfd_size_type total;
8356 bfd_boolean big_sec;
8357 bfd_vma curr_toc;
8358
8359 curr = tail;
eea6121a 8360 total = tail->size;
734b6cf9
AM		 8361 big_sec = total >= stub_group_size;
8362 curr_toc = htab->stub_group[tail->id].toc_off;
8363
8364 while ((prev = PREV_SEC (curr)) != NULL
8365 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8366 < stub_group_size)
8367 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8368 curr = prev;
8369
8370 /* OK, the size from the start of CURR to the end is less
8371 than stub_group_size and thus can be handled by one stub
8372 section. (or the tail section is itself larger than
8373 stub_group_size, in which case we may be toast.) We
8374 should really be keeping track of the total size of stubs
8375 added here, as stubs contribute to the final output
8376 section size. That's a little tricky, and this way will
8377 only break if stubs added make the total size more than
8378 2^25, ie. for the default stub_group_size, if stubs total
8379 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8380 do
721956f4
AM		 8381 {
8382 prev = PREV_SEC (tail);
734b6cf9 8383 /* Set up this stub group. */
721956f4
AM		 8384 htab->stub_group[tail->id].link_sec = curr;
8385 }
734b6cf9
AM		 8386 while (tail != curr && (tail = prev) != NULL);
8387
8388 /* But wait, there's more! Input sections up to stub_group_size
8389 bytes before the stub section can be handled by it too.
8390 Don't do this if we have a really large section after the
8391 stubs, as adding more stubs increases the chance that
8392 branches may not reach into the stub section. */
8393 if (!stubs_always_before_branch && !big_sec)
8394 {
8395 total = 0;
8396 while (prev != NULL
8397 && ((total += tail->output_offset - prev->output_offset)
8398 < stub_group_size)
8399 && htab->stub_group[prev->id].toc_off == curr_toc)
8400 {
8401 tail = prev;
8402 prev = PREV_SEC (tail);
8403 htab->stub_group[tail->id].link_sec = curr;
8404 }
8405 }
8406 tail = prev;
721956f4
AM		 8407 }
8408 }
734b6cf9
AM		 8409 while (list-- != htab->input_list);
8410 free (htab->input_list);
721956f4
AM		 8411#undef PREV_SEC
8412}
8413
721956f4
AM		 8414/* Determine and set the size of the stub section for a final link.
8415
8416 The basic idea here is to examine all the relocations looking for
8417 PC-relative calls to a target that is unreachable with a "bl"
8418 instruction. */
8419
b34976b6 8420bfd_boolean
4ce794b7 8421ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8422 struct bfd_link_info *info,
8423 bfd_signed_vma group_size,
8424 asection *(*add_stub_section) (const char *, asection *),
8425 void (*layout_sections_again) (void))
721956f4
AM		 8426{
8427 bfd_size_type stub_group_size;
b34976b6 8428 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8429 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8430
8431 /* Stash our params away. */
721956f4
AM		 8432 htab->add_stub_section = add_stub_section;
8433 htab->layout_sections_again = layout_sections_again;
8434 stubs_always_before_branch = group_size < 0;
8435 if (group_size < 0)
8436 stub_group_size = -group_size;
8437 else
8438 stub_group_size = group_size;
8439 if (stub_group_size == 1)
8440 {
8441 /* Default values. */
58ac9f71
AM		 8442 if (stubs_always_before_branch)
8443 {
8444 stub_group_size = 0x1e00000;
8445 if (htab->has_14bit_branch)
8446 stub_group_size = 0x7800;
8447 }
8448 else
8449 {
8450 stub_group_size = 0x1c00000;
8451 if (htab->has_14bit_branch)
8452 stub_group_size = 0x7000;
8453 }
721956f4
AM		 8454 }
8455
8456 group_sections (htab, stub_group_size, stubs_always_before_branch);
8457
721956f4
AM		 8458 while (1)
8459 {
8460 bfd *input_bfd;
8461 unsigned int bfd_indx;
8462 asection *stub_sec;
b34976b6 8463 bfd_boolean stub_changed;
721956f4
AM		 8464
8465 htab->stub_iteration += 1;
b34976b6 8466 stub_changed = FALSE;
721956f4
AM		 8467
8468 for (input_bfd = info->input_bfds, bfd_indx = 0;
8469 input_bfd != NULL;
8470 input_bfd = input_bfd->link_next, bfd_indx++)
8471 {
8472 Elf_Internal_Shdr *symtab_hdr;
8473 asection *section;
6cdc0ccc 8474 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8475
8476 /* We'll need the symbol table in a second. */
8477 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8478 if (symtab_hdr->sh_info == 0)
8479 continue;
8480
721956f4
AM		 8481 /* Walk over each section attached to the input bfd. */
8482 for (section = input_bfd->sections;
8483 section != NULL;
8484 section = section->next)
8485 {
721956f4 8486 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8487
8488 /* If there aren't any relocs, then there's nothing more
8489 to do. */
8490 if ((section->flags & SEC_RELOC) == 0
8491 || section->reloc_count == 0)
8492 continue;
8493
8494 /* If this section is a link-once section that will be
8495 discarded, then don't create any stubs. */
8496 if (section->output_section == NULL
8497 || section->output_section->owner != output_bfd)
8498 continue;
8499
1e2f5b6e
AM		 8500 /* Get the relocs. */
8501 internal_relocs
4ce794b7 8502 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8503 info->keep_memory);
721956f4 8504 if (internal_relocs == NULL)
1e2f5b6e 8505 goto error_ret_free_local;
721956f4
AM		 8506
8507 /* Now examine each relocation. */
8508 irela = internal_relocs;
8509 irelaend = irela + section->reloc_count;
8510 for (; irela < irelaend; irela++)
8511 {
4ce794b7
AM		 8512 enum elf_ppc64_reloc_type r_type;
8513 unsigned int r_indx;
721956f4
AM		 8514 enum ppc_stub_type stub_type;
8515 struct ppc_stub_hash_entry *stub_entry;
8387904d 8516 asection *sym_sec, *code_sec;
721956f4
AM		 8517 bfd_vma sym_value;
8518 bfd_vma destination;
8843416a 8519 bfd_boolean ok_dest;
721956f4 8520 struct ppc_link_hash_entry *hash;
8387904d 8521 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8522 struct elf_link_hash_entry *h;
8523 Elf_Internal_Sym *sym;
721956f4
AM		 8524 char *stub_name;
8525 const asection *id_sec;
8387904d 8526 long *opd_adjust;
721956f4
AM		 8527
8528 r_type = ELF64_R_TYPE (irela->r_info);
8529 r_indx = ELF64_R_SYM (irela->r_info);
8530
4ce794b7 8531 if (r_type >= R_PPC64_max)
721956f4
AM		 8532 {
8533 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8534 goto error_ret_free_internal;
721956f4
AM		 8535 }
8536
8537 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8538 if (r_type != R_PPC64_REL24
8539 && r_type != R_PPC64_REL14
8540 && r_type != R_PPC64_REL14_BRTAKEN
8541 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8542 continue;
8543
8544 /* Now determine the call target, its name, value,
8545 section. */
411e1bfb
AM		 8546 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8547 r_indx, input_bfd))
8548 goto error_ret_free_internal;
8549 hash = (struct ppc_link_hash_entry *) h;
8550
8843416a 8551 ok_dest = FALSE;
8387904d 8552 fdh = NULL;
411e1bfb 8553 if (hash == NULL)
721956f4 8554 {
411e1bfb 8555 sym_value = sym->st_value;
8843416a 8556 ok_dest = TRUE;
721956f4
AM		 8557 }
8558 else
8559 {
411e1bfb 8560 sym_value = 0;
99877b66
AM		 8561 /* Recognise an old ABI func code entry sym, and
8562 use the func descriptor sym instead. */
8563 if (hash->elf.root.type == bfd_link_hash_undefweak
8387904d
AM		 8564 && hash->elf.root.root.string[0] == '.'
8565 && (fdh = get_fdh (hash, htab)) != NULL)
8566 {
8387904d
AM		 8567 if (fdh->elf.root.type == bfd_link_hash_defined
8568 || fdh->elf.root.type == bfd_link_hash_defweak)
8569 {
8570 sym_sec = fdh->elf.root.u.def.section;
8571 sym_value = fdh->elf.root.u.def.value;
8572 if (sym_sec->output_section != NULL)
8573 ok_dest = TRUE;
8574 }
99877b66
AM		 8575 else
8576 fdh = NULL;
8387904d
AM		 8577 }
8578 else if (hash->elf.root.type == bfd_link_hash_defined
8579 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8580 {
721956f4
AM		 8581 sym_value = hash->elf.root.u.def.value;
8582 if (sym_sec->output_section != NULL)
8843416a 8583 ok_dest = TRUE;
721956f4
AM		 8584 }
8585 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8586 ;
8587 else if (hash->elf.root.type == bfd_link_hash_undefined)
8588 ;
8589 else
8590 {
8591 bfd_set_error (bfd_error_bad_value);
8592 goto error_ret_free_internal;
8593 }
8594 }
8595
8843416a
AM		 8596 destination = 0;
8597 if (ok_dest)
8598 {
8599 sym_value += irela->r_addend;
8600 destination = (sym_value
8601 + sym_sec->output_offset
8602 + sym_sec->output_section->vma);
8603 }
8604
8387904d
AM		 8605 code_sec = sym_sec;
8606 opd_adjust = get_opd_info (sym_sec);
8607 if (opd_adjust != NULL)
8608 {
8609 bfd_vma dest;
8610
8611 if (hash == NULL)
8612 {
3f764659 8613 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 8614 if (adjust == -1)
8615 continue;
8616 sym_value += adjust;
8617 }
8618 dest = opd_entry_value (sym_sec, sym_value,
8619 &code_sec, &sym_value);
8620 if (dest != (bfd_vma) -1)
8621 {
8622 destination = dest;
8623 if (fdh != NULL)
8624 {
8625 /* Fixup old ABI sym to point at code
8626 entry. */
99877b66 8627 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 8628 hash->elf.root.u.def.section = code_sec;
8629 hash->elf.root.u.def.value = sym_value;
8630 }
8631 }
8632 }
8633
721956f4
AM		 8634 /* Determine what (if any) linker stub is needed. */
8635 stub_type = ppc_type_of_stub (section, irela, &hash,
8636 destination);
ad8e1ba5
AM		 8637
8638 if (stub_type != ppc_stub_plt_call)
8639 {
8640 /* Check whether we need a TOC adjusting stub.
8641 Since the linker pastes together pieces from
8642 different object files when creating the
8643 _init and _fini functions, it may be that a
8644 call to what looks like a local sym is in
8645 fact a call needing a TOC adjustment. */
8387904d
AM		 8646 if (code_sec != NULL
8647 && code_sec->output_section != NULL
8648 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 8649 != htab->stub_group[section->id].toc_off)
8387904d 8650 && code_sec->has_gp_reloc
9b5ecbd0 8651 && section->has_gp_reloc)
ad8e1ba5
AM		 8652 stub_type = ppc_stub_long_branch_r2off;
8653 }
8654
721956f4
AM		 8655 if (stub_type == ppc_stub_none)
8656 continue;
8657
411e1bfb
AM		 8658 /* __tls_get_addr calls might be eliminated. */
8659 if (stub_type != ppc_stub_plt_call
8660 && hash != NULL
8387904d
AM		 8661 && (hash == htab->tls_get_addr
8662 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 8663 && section->has_tls_reloc
8664 && irela != internal_relocs)
8665 {
8666 /* Get tls info. */
e7b938ca 8667 char *tls_mask;
411e1bfb 8668
0d4792f7 8669 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 8670 irela - 1, input_bfd))
8671 goto error_ret_free_internal;
e7b938ca 8672 if (*tls_mask != 0)
411e1bfb
AM		 8673 continue;
8674 }
8675
721956f4
AM		 8676 /* Support for grouping stub sections. */
8677 id_sec = htab->stub_group[section->id].link_sec;
8678
8679 /* Get the name of this stub. */
8680 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8681 if (!stub_name)
8682 goto error_ret_free_internal;
8683
8684 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 8685 stub_name, FALSE, FALSE);
721956f4
AM		 8686 if (stub_entry != NULL)
8687 {
8688 /* The proper stub has already been created. */
8689 free (stub_name);
8690 continue;
8691 }
8692
8693 stub_entry = ppc_add_stub (stub_name, section, htab);
8694 if (stub_entry == NULL)
8695 {
8696 free (stub_name);
6cdc0ccc
AM		 8697 error_ret_free_internal:
8698 if (elf_section_data (section)->relocs == NULL)
8699 free (internal_relocs);
8700 error_ret_free_local:
8701 if (local_syms != NULL
8702 && (symtab_hdr->contents
8703 != (unsigned char *) local_syms))
8704 free (local_syms);
b34976b6 8705 return FALSE;
721956f4
AM		 8706 }
8707
ad8e1ba5 8708 stub_entry->stub_type = stub_type;
721956f4 8709 stub_entry->target_value = sym_value;
8387904d 8710 stub_entry->target_section = code_sec;
721956f4 8711 stub_entry->h = hash;
411e1bfb 8712 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 8713
8714 if (stub_entry->h != NULL)
8715 htab->stub_globals += 1;
8716
b34976b6 8717 stub_changed = TRUE;
721956f4
AM		 8718 }
8719
8720 /* We're done with the internal relocs, free them. */
6cdc0ccc 8721 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 8722 free (internal_relocs);
721956f4 8723 }
6cdc0ccc
AM		 8724
8725 if (local_syms != NULL
8726 && symtab_hdr->contents != (unsigned char *) local_syms)
8727 {
8728 if (!info->keep_memory)
8729 free (local_syms);
8730 else
8731 symtab_hdr->contents = (unsigned char *) local_syms;
8732 }
721956f4
AM		 8733 }
8734
8735 if (!stub_changed)
8736 break;
8737
8738 /* OK, we've added some stubs. Find out the new size of the
8739 stub sections. */
8740 for (stub_sec = htab->stub_bfd->sections;
8741 stub_sec != NULL;
8742 stub_sec = stub_sec->next)
e717da7e 8743 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 8744 {
8745 stub_sec->size = 0;
8746 stub_sec->reloc_count = 0;
8747 }
eea6121a
AM		 8748
8749 htab->brlt->size = 0;
ee75fd95 8750 if (htab->relbrlt != NULL)
eea6121a 8751 htab->relbrlt->size = 0;
721956f4 8752
63bc6f6c 8753 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 8754
8755 /* Ask the linker to do its stuff. */
8756 (*htab->layout_sections_again) ();
8757 }
8758
afbe61cf
AM		 8759 /* It would be nice to strip .branch_lt from the output if the
8760 section is empty, but it's too late. If we strip sections here,
8761 the dynamic symbol table is corrupted since the section symbol
8762 for the stripped section isn't written. */
721956f4 8763
b34976b6 8764 return TRUE;
721956f4
AM		 8765}
8766
8767/* Called after we have determined section placement. If sections
805fc799 8768 move, we'll be called again. Provide a value for TOCstart. */
721956f4 8769
805fc799 8770bfd_vma
4ce794b7 8771ppc64_elf_toc (bfd *obfd)
721956f4 8772{
805fc799
AM		 8773 asection *s;
8774 bfd_vma TOCstart;
721956f4 8775
805fc799
AM		 8776 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8777 order. The TOC starts where the first of these sections starts. */
8778 s = bfd_get_section_by_name (obfd, ".got");
8779 if (s == NULL)
8780 s = bfd_get_section_by_name (obfd, ".toc");
8781 if (s == NULL)
8782 s = bfd_get_section_by_name (obfd, ".tocbss");
8783 if (s == NULL)
8784 s = bfd_get_section_by_name (obfd, ".plt");
8785 if (s == NULL)
8786 {
8787 /* This may happen for
8788 o references to TOC base (SYM@toc / TOC[tc0]) without a
8789 .toc directive
8790 o bad linker script
8791 o --gc-sections and empty TOC sections
8792
8793 FIXME: Warn user? */
8794
8795 /* Look for a likely section. We probably won't even be
8796 using TOCstart. */
8797 for (s = obfd->sections; s != NULL; s = s->next)
8798 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
8799 == (SEC_ALLOC | SEC_SMALL_DATA))
8800 break;
721956f4 8801 if (s == NULL)
805fc799
AM		 8802 for (s = obfd->sections; s != NULL; s = s->next)
8803 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
8804 == (SEC_ALLOC | SEC_SMALL_DATA))
8805 break;
721956f4 8806 if (s == NULL)
805fc799
AM		 8807 for (s = obfd->sections; s != NULL; s = s->next)
8808 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
8809 break;
721956f4 8810 if (s == NULL)
805fc799
AM		 8811 for (s = obfd->sections; s != NULL; s = s->next)
8812 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
8813 break;
8814 }
721956f4 8815
805fc799
AM		 8816 TOCstart = 0;
8817 if (s != NULL)
8818 TOCstart = s->output_section->vma + s->output_offset;
721956f4 8819
805fc799 8820 return TOCstart;
721956f4
AM		 8821}
8822
8823/* Build all the stubs associated with the current output file.
8824 The stubs are kept in a hash table attached to the main linker
8825 hash table. This function is called via gldelf64ppc_finish. */
8826
b34976b6 8827bfd_boolean
4ce794b7
AM		 8828ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
8829 struct bfd_link_info *info,
8830 char **stats)
5d1634d7
AM		 8831{
8832 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 8833 asection *stub_sec;
5d1634d7 8834 bfd_byte *p;
e717da7e 8835 int stub_sec_count = 0;
5d1634d7 8836
ad8e1ba5 8837 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 8838
8839 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 8840 for (stub_sec = htab->stub_bfd->sections;
8841 stub_sec != NULL;
8842 stub_sec = stub_sec->next)
eea6121a
AM		 8843 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
8844 && stub_sec->size != 0)
e717da7e 8845 {
eea6121a
AM		 8846 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
8847 if (stub_sec->contents == NULL)
8848 return FALSE;
8849 /* We want to check that built size is the same as calculated
8850 size. rawsize is a convenient location to use. */
8851 stub_sec->rawsize = stub_sec->size;
8852 stub_sec->size = 0;
e717da7e 8853 }
5d1634d7 8854
4ce794b7 8855 if (htab->plt != NULL)
5d1634d7 8856 {
9f951329 8857 unsigned int indx;
ad8e1ba5 8858 bfd_vma plt0;
9f951329 8859
721956f4 8860 /* Build the .glink plt call stub. */
4ce794b7
AM		 8861 plt0 = (htab->plt->output_section->vma
8862 + htab->plt->output_offset
8863 - (htab->glink->output_section->vma
8864 + htab->glink->output_offset
ad8e1ba5
AM		 8865 + GLINK_CALL_STUB_SIZE));
8866 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 8867 {
ad8e1ba5
AM		 8868 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
8869 bfd_set_error (bfd_error_bad_value);
8870 return FALSE;
721956f4 8871 }
721956f4 8872
97b639ba
AM		 8873 if (htab->emit_stub_syms)
8874 {
8875 struct elf_link_hash_entry *h;
8876 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
8877 if (h == NULL)
8878 return FALSE;
8879 if (h->root.type == bfd_link_hash_new)
8880 {
8881 h->root.type = bfd_link_hash_defined;
8882 h->root.u.def.section = htab->glink;
8883 h->root.u.def.value = 0;
f5385ebf
AM		 8884 h->ref_regular = 1;
8885 h->def_regular = 1;
8886 h->ref_regular_nonweak = 1;
8887 h->forced_local = 1;
8888 h->non_elf = 0;
97b639ba
AM		 8889 }
8890 }
4ce794b7
AM		 8891 p = htab->glink->contents;
8892 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 8893 p += 4;
4ce794b7 8894 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 8895 p += 4;
4ce794b7 8896 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 8897 p += 4;
4ce794b7 8898 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 8899 p += 4;
4ce794b7 8900 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 8901 p += 4;
4ce794b7 8902 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 8903 p += 4;
4ce794b7 8904 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 8905 p += 4;
4ce794b7 8906 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 8907 p += 4;
4ce794b7 8908 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 8909 p += 4;
4ce794b7 8910 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 8911 p += 4;
4ce794b7 8912 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 8913 p += 4;
4ce794b7 8914 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 8915 p += 4;
4ce794b7 8916 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 8917 p += 4;
4ce794b7 8918 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 8919 p += 4;
4ce794b7 8920 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 8921 p += 4;
4ce794b7 8922 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 8923 p += 4;
8924
9f951329
AM		 8925 /* Build the .glink lazy link call stubs. */
8926 indx = 0;
eea6121a 8927 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 8928 {
8929 if (indx < 0x8000)
8930 {
4ce794b7 8931 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 8932 p += 4;
8933 }
8934 else
8935 {
4ce794b7 8936 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 8937 p += 4;
4ce794b7 8938 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 8939 p += 4;
8940 }
4ce794b7
AM		 8941 bfd_put_32 (htab->glink->owner,
8942 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 8943 indx++;
9f951329
AM		 8944 p += 4;
8945 }
eea6121a 8946 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 8947 }
5d1634d7 8948
eea6121a 8949 if (htab->brlt->size != 0)
721956f4 8950 {
4ce794b7 8951 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 8952 htab->brlt->size);
4ce794b7 8953 if (htab->brlt->contents == NULL)
b34976b6 8954 return FALSE;
721956f4 8955 }
ee75fd95 8956 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 8957 {
8958 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 8959 htab->relbrlt->size);
63bc6f6c
AM		 8960 if (htab->relbrlt->contents == NULL)
8961 return FALSE;
8962 }
5d1634d7 8963
721956f4
AM		 8964 /* Build the stubs as directed by the stub hash table. */
8965 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 8966
721956f4
AM		 8967 for (stub_sec = htab->stub_bfd->sections;
8968 stub_sec != NULL;
8969 stub_sec = stub_sec->next)
e717da7e
AM		 8970 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8971 {
8972 stub_sec_count += 1;
eea6121a 8973 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 8974 break;
8975 }
5d1634d7 8976
721956f4 8977 if (stub_sec != NULL
eea6121a 8978 || htab->glink->rawsize != htab->glink->size)
5d1634d7 8979 {
b34976b6 8980 htab->stub_error = TRUE;
721956f4 8981 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 8982 }
721956f4 8983
d2a300cf
AM		 8984 if (htab->stub_error)
8985 return FALSE;
8986
8987 if (stats != NULL)
8988 {
8989 *stats = bfd_malloc (500);
8990 if (*stats == NULL)
8991 return FALSE;
8992
ee75fd95 8993 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 8994 " branch %lu\n"
8995 " toc adjust %lu\n"
8996 " long branch %lu\n"
8997 " long toc adj %lu\n"
8998 " plt call %lu"),
e717da7e 8999 stub_sec_count,
ee75fd95 9000 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9001 htab->stub_count[ppc_stub_long_branch - 1],
9002 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9003 htab->stub_count[ppc_stub_plt_branch - 1],
9004 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9005 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9006 }
9007 return TRUE;
5bd4f169
AM		 9008}
9009
99877b66
AM		 9010/* This function undoes the changes made by add_symbol_adjust. */
9011
9012static bfd_boolean
9013undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9014{
9015 struct ppc_link_hash_entry *eh;
9016
9017 if (h->root.type == bfd_link_hash_indirect)
9018 return TRUE;
9019
9020 if (h->root.type == bfd_link_hash_warning)
9021 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9022
9023 eh = (struct ppc_link_hash_entry *) h;
9024 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9025 return TRUE;
9026
9027 eh->elf.root.type = bfd_link_hash_undefined;
9028 return TRUE;
9029}
9030
9031void
9032ppc64_elf_restore_symbols (struct bfd_link_info *info)
9033{
9034 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9035 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9036}
9037
5bd4f169
AM		 9038/* The RELOCATE_SECTION function is called by the ELF backend linker
9039 to handle the relocations for a section.
9040
9041 The relocs are always passed as Rela structures; if the section
9042 actually uses Rel structures, the r_addend field will always be
9043 zero.
9044
9045 This function is responsible for adjust the section contents as
9046 necessary, and (if using Rela relocs and generating a
1049f94e 9047 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9048 necessary.
9049
9050 This function does not have to worry about setting the reloc
9051 address or the reloc symbol index.
9052
9053 LOCAL_SYMS is a pointer to the swapped in local symbols.
9054
9055 LOCAL_SECTIONS is an array giving the section in the input file
9056 corresponding to the st_shndx field of each local symbol.
9057
9058 The global hash table entry for the global symbols can be found
9059 via elf_sym_hashes (input_bfd).
9060
1049f94e 9061 When generating relocatable output, this function must handle
5bd4f169
AM		 9062 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9063 going to be the section symbol corresponding to the output
9064 section, which means that the addend must be adjusted
9065 accordingly. */
9066
b34976b6 9067static bfd_boolean
4ce794b7
AM		 9068ppc64_elf_relocate_section (bfd *output_bfd,
9069 struct bfd_link_info *info,
9070 bfd *input_bfd,
9071 asection *input_section,
9072 bfd_byte *contents,
9073 Elf_Internal_Rela *relocs,
9074 Elf_Internal_Sym *local_syms,
9075 asection **local_sections)
5bd4f169 9076{
65f38f15 9077 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9078 Elf_Internal_Shdr *symtab_hdr;
9079 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9080 Elf_Internal_Rela *rel;
9081 Elf_Internal_Rela *relend;
411e1bfb
AM		 9082 Elf_Internal_Rela outrel;
9083 bfd_byte *loc;
411e1bfb 9084 struct got_entry **local_got_ents;
5bd4f169 9085 bfd_vma TOCstart;
b34976b6
AM		 9086 bfd_boolean ret = TRUE;
9087 bfd_boolean is_opd;
96e0dda4 9088 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9089 bfd_boolean is_power4 = FALSE;
5bd4f169 9090
1049f94e 9091 if (info->relocatable)
b34976b6 9092 return TRUE;
b491616a 9093
65f38f15 9094 /* Initialize howto table if needed. */
5bd4f169 9095 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9096 ppc_howto_init ();
9097
65f38f15 9098 htab = ppc_hash_table (info);
ee75fd95
AM		 9099
9100 /* Don't relocate stub sections. */
9101 if (input_section->owner == htab->stub_bfd)
9102 return TRUE;
9103
411e1bfb 9104 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9105 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9106 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9107 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9108 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9109
5bd4f169
AM		 9110 rel = relocs;
9111 relend = relocs + input_section->reloc_count;
9112 for (; rel < relend; rel++)
9113 {
04c9666a 9114 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9115 bfd_vma addend;
9116 bfd_reloc_status_type r;
9117 Elf_Internal_Sym *sym;
9118 asection *sec;
039b3fef
AM		 9119 struct elf_link_hash_entry *h_elf;
9120 struct ppc_link_hash_entry *h;
9121 struct ppc_link_hash_entry *fdh;
5bd4f169 9122 const char *sym_name;
0d4792f7 9123 unsigned long r_symndx, toc_symndx;
951fd09b 9124 char tls_mask, tls_gd, tls_type;
0d4792f7 9125 char sym_type;
5bd4f169 9126 bfd_vma relocation;
b34976b6
AM		 9127 bfd_boolean unresolved_reloc;
9128 bfd_boolean warned;
50bc7936 9129 unsigned long insn, mask;
721956f4
AM		 9130 struct ppc_stub_hash_entry *stub_entry;
9131 bfd_vma max_br_offset;
9132 bfd_vma from;
5bd4f169 9133
4ce794b7 9134 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9135 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9136
9137 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9138 symbol of the previous ADDR64 reloc. The symbol gives us the
9139 proper TOC base to use. */
9140 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9141 && rel != relocs
9142 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9143 && is_opd)
9144 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9145
4ce794b7
AM		 9146 sym = NULL;
9147 sec = NULL;
039b3fef 9148 h_elf = NULL;
4ce794b7 9149 sym_name = NULL;
b34976b6
AM		 9150 unresolved_reloc = FALSE;
9151 warned = FALSE;
65f38f15 9152
0b13192e 9153 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9154 {
9155 /* It's a local symbol. */
4025353c
AM		 9156 long *opd_adjust;
9157
5bd4f169
AM		 9158 sym = local_syms + r_symndx;
9159 sec = local_sections[r_symndx];
be8dd2ca 9160 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
0d4792f7 9161 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9162 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9163 opd_adjust = get_opd_info (sec);
9164 if (opd_adjust != NULL)
1e2f5b6e 9165 {
3f764659 9166 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9167 if (adjust == -1)
9168 relocation = 0;
9169 else
9170 relocation += adjust;
1e2f5b6e 9171 }
5bd4f169
AM		 9172 }
9173 else
9174 {
b2a8e766
AM		 9175 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9176 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9177 h_elf, sec, relocation,
b2a8e766 9178 unresolved_reloc, warned);
039b3fef
AM		 9179 sym_name = h_elf->root.root.string;
9180 sym_type = h_elf->type;
5bd4f169 9181 }
039b3fef 9182 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9183
951fd09b
AM		 9184 /* TLS optimizations. Replace instruction sequences and relocs
9185 based on information we collected in tls_optimize. We edit
9186 RELOCS so that --emit-relocs will output something sensible
9187 for the final instruction stream. */
9188 tls_mask = 0;
9189 tls_gd = 0;
0d4792f7 9190 toc_symndx = 0;
d881513a 9191 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9192 {
9193 if (h != NULL)
039b3fef 9194 tls_mask = h->tls_mask;
411e1bfb
AM		 9195 else if (local_got_ents != NULL)
9196 {
e7b938ca
AM		 9197 char *lgot_masks;
9198 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9199 tls_mask = lgot_masks[r_symndx];
411e1bfb 9200 }
0d4792f7
AM		 9201 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9202 {
9203 /* Check for toc tls entries. */
9204 char *toc_tls;
9205
9206 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9207 rel, input_bfd))
9208 return FALSE;
9209
9210 if (toc_tls)
9211 tls_mask = *toc_tls;
9212 }
9213 }
9214
9215 /* Check that tls relocs are used with tls syms, and non-tls
9216 relocs are used with non-tls syms. */
9217 if (r_symndx != 0
9218 && r_type != R_PPC64_NONE
9219 && (h == NULL
039b3fef
AM		 9220 || h->elf.root.type == bfd_link_hash_defined
9221 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9222 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9223 {
9224 if (r_type == R_PPC64_TLS && tls_mask != 0)
9225 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9226 ;
9227 else
9228 (*_bfd_error_handler)
9229 (sym_type == STT_TLS
d003868e
AM		 9230 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9231 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9232 input_bfd,
9233 input_section,
0d4792f7
AM		 9234 (long) rel->r_offset,
9235 ppc64_elf_howto_table[r_type]->name,
9236 sym_name);
411e1bfb
AM		 9237 }
9238
9239 /* Ensure reloc mapping code below stays sane. */
9240 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9241 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9242 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9243 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9244 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9245 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9246 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9247 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9248 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9249 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9250 abort ();
0d4792f7 9251
411e1bfb
AM		 9252 switch (r_type)
9253 {
9254 default:
411e1bfb
AM		 9255 break;
9256
9257 case R_PPC64_TOC16:
9258 case R_PPC64_TOC16_LO:
9259 case R_PPC64_TOC16_DS:
9260 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9261 {
9262 /* Check for toc tls entries. */
9263 char *toc_tls;
951fd09b 9264 int retval;
411e1bfb 9265
0d4792f7
AM		 9266 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9267 rel, input_bfd);
951fd09b 9268 if (retval == 0)
411e1bfb
AM		 9269 return FALSE;
9270
9271 if (toc_tls)
9272 {
951fd09b 9273 tls_mask = *toc_tls;
411e1bfb
AM		 9274 if (r_type == R_PPC64_TOC16_DS
9275 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9276 {
9277 if (tls_mask != 0
9278 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9279 goto toctprel;
9280 }
411e1bfb 9281 else
951fd09b
AM		 9282 {
9283 /* If we found a GD reloc pair, then we might be
9284 doing a GD->IE transition. */
9285 if (retval == 2)
9286 {
9287 tls_gd = TLS_TPRELGD;
9288 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9289 goto tls_get_addr_check;
9290 }
9291 else if (retval == 3)
9292 {
9293 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9294 goto tls_get_addr_check;
9295 }
9296 }
411e1bfb
AM		 9297 }
9298 }
9299 break;
9300
9301 case R_PPC64_GOT_TPREL16_DS:
9302 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9303 if (tls_mask != 0
9304 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9305 {
81407a69 9306 toctprel:
411e1bfb
AM		 9307 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9308 insn &= 31 << 21;
9309 insn |= 0x3c0d0000; /* addis 0,13,0 */
9310 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9311 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9312 if (toc_symndx != 0)
9313 {
9314 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9315 /* We changed the symbol. Start over in order to
9316 get h, sym, sec etc. right. */
9317 rel--;
9318 continue;
9319 }
9320 else
9321 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9322 }
9323 break;
9324
9325 case R_PPC64_TLS:
951fd09b
AM		 9326 if (tls_mask != 0
9327 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9328 {
50bc7936 9329 bfd_vma rtra;
411e1bfb 9330 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9331 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9332 == ((31 << 26) | (13 << 11)))
9333 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9334 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9335 == ((31 << 26) | (13 << 16)))
9336 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9337 else
9338 abort ();
9339 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9340 /* add -> addi. */
9341 insn = 14 << 26;
9342 else if ((insn & (31 << 1)) == 23 << 1
9343 && ((insn & (31 << 6)) < 14 << 6
9344 || ((insn & (31 << 6)) >= 16 << 6
9345 && (insn & (31 << 6)) < 24 << 6)))
9346 /* load and store indexed -> dform. */
9347 insn = (32 | ((insn >> 6) & 31)) << 26;
9348 else if ((insn & (31 << 1)) == 21 << 1
9349 && (insn & (0x1a << 6)) == 0)
9350 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9351 insn = (((58 | ((insn >> 6) & 4)) << 26)
9352 | ((insn >> 6) & 1));
9353 else if ((insn & (31 << 1)) == 21 << 1
9354 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9355 /* lwax -> lwa. */
9356 insn = (58 << 26) | 2;
9357 else
9358 abort ();
9359 insn |= rtra;
9360 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9361 /* Was PPC64_TLS which sits on insn boundary, now
9362 PPC64_TPREL16_LO which is at insn+2. */
9363 rel->r_offset += 2;
0d4792f7
AM		 9364 r_type = R_PPC64_TPREL16_LO;
9365 if (toc_symndx != 0)
9366 {
9367 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9368 /* We changed the symbol. Start over in order to
9369 get h, sym, sec etc. right. */
9370 rel--;
9371 continue;
9372 }
9373 else
9374 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9375 }
9376 break;
9377
411e1bfb
AM		 9378 case R_PPC64_GOT_TLSGD16_HI:
9379 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9380 tls_gd = TLS_TPRELGD;
9381 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9382 goto tls_gdld_hi;
9383 break;
9384
411e1bfb
AM		 9385 case R_PPC64_GOT_TLSLD16_HI:
9386 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9387 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9388 {
951fd09b
AM		 9389 tls_gdld_hi:
9390 if ((tls_mask & tls_gd) != 0)
9391 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9392 + R_PPC64_GOT_TPREL16_DS);
9393 else
411e1bfb 9394 {
951fd09b
AM		 9395 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9396 rel->r_offset -= 2;
9397 r_type = R_PPC64_NONE;
411e1bfb 9398 }
951fd09b 9399 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9400 }
9401 break;
9402
951fd09b
AM		 9403 case R_PPC64_GOT_TLSGD16:
9404 case R_PPC64_GOT_TLSGD16_LO:
9405 tls_gd = TLS_TPRELGD;
9406 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9407 goto tls_get_addr_check;
9408 break;
411e1bfb 9409
951fd09b
AM		 9410 case R_PPC64_GOT_TLSLD16:
9411 case R_PPC64_GOT_TLSLD16_LO:
9412 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9413 {
9414 tls_get_addr_check:
9415 if (rel + 1 < relend)
411e1bfb 9416 {
951fd09b
AM		 9417 enum elf_ppc64_reloc_type r_type2;
9418 unsigned long r_symndx2;
9419 struct elf_link_hash_entry *h2;
9420 bfd_vma insn1, insn2, insn3;
9421 bfd_vma offset;
9422
9423 /* The next instruction should be a call to
9424 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9425 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9426 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9427 if (r_symndx2 < symtab_hdr->sh_info
9428 || (r_type2 != R_PPC64_REL14
9429 && r_type2 != R_PPC64_REL14_BRTAKEN
9430 && r_type2 != R_PPC64_REL14_BRNTAKEN
9431 && r_type2 != R_PPC64_REL24))
9432 break;
9433
9434 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9435 while (h2->root.type == bfd_link_hash_indirect
9436 || h2->root.type == bfd_link_hash_warning)
9437 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9438 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9439 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9440 break;
9441
9442 /* OK, it checks out. Replace the call. */
9443 offset = rel[1].r_offset;
9444 insn1 = bfd_get_32 (output_bfd,
9445 contents + rel->r_offset - 2);
9446 insn3 = bfd_get_32 (output_bfd,
9447 contents + offset + 4);
9448 if ((tls_mask & tls_gd) != 0)
411e1bfb 9449 {
951fd09b
AM		 9450 /* IE */
9451 insn1 &= (1 << 26) - (1 << 2);
9452 insn1 |= 58 << 26; /* ld */
9453 insn2 = 0x7c636a14; /* add 3,3,13 */
9454 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9455 if ((tls_mask & TLS_EXPLICIT) == 0)
9456 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9457 + R_PPC64_GOT_TPREL16_DS);
9458 else
9459 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9460 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9461 }
9462 else
951fd09b
AM		 9463 {
9464 /* LE */
9465 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9466 insn2 = 0x38630000; /* addi 3,3,0 */
9467 if (tls_gd == 0)
9468 {
9469 /* Was an LD reloc. */
9470 r_symndx = 0;
e1918d23
AM		 9471 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9472 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9473 }
0d4792f7
AM		 9474 else if (toc_symndx != 0)
9475 r_symndx = toc_symndx;
951fd09b
AM		 9476 r_type = R_PPC64_TPREL16_HA;
9477 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9478 rel[1].r_info = ELF64_R_INFO (r_symndx,
9479 R_PPC64_TPREL16_LO);
9480 rel[1].r_offset += 2;
9481 }
9482 if (insn3 == NOP
9483 || insn3 == CROR_151515 || insn3 == CROR_313131)
9484 {
9485 insn3 = insn2;
9486 insn2 = NOP;
9487 rel[1].r_offset += 4;
9488 }
9489 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9490 bfd_put_32 (output_bfd, insn2, contents + offset);
9491 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9492 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9493 {
0d4792f7
AM		 9494 /* We changed the symbol. Start over in order
9495 to get h, sym, sec etc. right. */
951fd09b
AM		 9496 rel--;
9497 continue;
9498 }
411e1bfb 9499 }
411e1bfb 9500 }
411e1bfb
AM		 9501 break;
9502
9503 case R_PPC64_DTPMOD64:
951fd09b
AM		 9504 if (rel + 1 < relend
9505 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9506 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9507 {
951fd09b
AM		 9508 if ((tls_mask & TLS_GD) == 0)
9509 {
9510 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9511 if ((tls_mask & TLS_TPRELGD) != 0)
9512 r_type = R_PPC64_TPREL64;
9513 else
9514 {
4ce794b7 9515 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9516 r_type = R_PPC64_NONE;
9517 }
9518 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9519 }
9520 }
9521 else
9522 {
9523 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9524 {
4ce794b7 9525 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9526 r_type = R_PPC64_NONE;
951fd09b 9527 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9528 }
411e1bfb
AM		 9529 }
9530 break;
9531
9532 case R_PPC64_TPREL64:
951fd09b 9533 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9534 {
9535 r_type = R_PPC64_NONE;
9536 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9537 }
9538 break;
9539 }
9540
9541 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9542 insn = 0;
b25116a9
AM		 9543 max_br_offset = 1 << 25;
9544 addend = rel->r_addend;
65f38f15 9545 switch (r_type)
5bd4f169
AM		 9546 {
9547 default:
65f38f15 9548 break;
5bd4f169 9549
65f38f15
AM		 9550 /* Branch taken prediction relocations. */
9551 case R_PPC64_ADDR14_BRTAKEN:
9552 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9553 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9554 /* Fall thru. */
65f38f15 9555
86c76c7b 9556 /* Branch not taken prediction relocations. */
65f38f15
AM		 9557 case R_PPC64_ADDR14_BRNTAKEN:
9558 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9559 insn |= bfd_get_32 (output_bfd,
9560 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9561 /* Fall thru. */
86c76c7b 9562
b25116a9
AM		 9563 case R_PPC64_REL14:
9564 max_br_offset = 1 << 15;
9565 /* Fall thru. */
5bd4f169 9566
65f38f15 9567 case R_PPC64_REL24:
ad8e1ba5
AM		 9568 /* Calls to functions with a different TOC, such as calls to
9569 shared objects, need to alter the TOC pointer. This is
9570 done using a linkage stub. A REL24 branching to these
9571 linkage stubs needs to be followed by a nop, as the nop
9572 will be replaced with an instruction to restore the TOC
9573 base pointer. */
b25116a9 9574 stub_entry = NULL;
8387904d 9575 fdh = h;
ad8e1ba5 9576 if (((h != NULL
039b3fef
AM		 9577 && (((fdh = h->oh) != NULL
9578 && fdh->elf.plt.plist != NULL)
9579 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9580 || (sec != NULL
ad8e1ba5 9581 && sec->output_section != NULL
b25116a9 9582 && sec->id <= htab->top_id
ad8e1ba5
AM		 9583 && (htab->stub_group[sec->id].toc_off
9584 != htab->stub_group[input_section->id].toc_off)))
721956f4 9585 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9586 rel, htab)) != NULL
9587 && (stub_entry->stub_type == ppc_stub_plt_call
9588 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9589 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9590 {
b25116a9 9591 bfd_boolean can_plt_call = FALSE;
721956f4 9592
eea6121a 9593 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9594 {
b25116a9
AM		 9595 unsigned long nop;
9596 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9597 if (nop == NOP
9598 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9599 {
4ce794b7 9600 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9601 contents + rel->r_offset + 4);
b25116a9 9602 can_plt_call = TRUE;
41bd81ab 9603 }
5bd4f169 9604 }
721956f4
AM		 9605
9606 if (!can_plt_call)
9607 {
ad8e1ba5
AM		 9608 if (stub_entry->stub_type == ppc_stub_plt_call)
9609 {
9610 /* If this is a plain branch rather than a branch
9611 and link, don't require a nop. */
b25116a9
AM		 9612 unsigned long br;
9613 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9614 if ((br & 1) == 0)
9615 can_plt_call = TRUE;
ad8e1ba5 9616 }
6ab189d5 9617 else if (h != NULL
039b3fef 9618 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 9619 ".__libc_start_main") == 0)
9620 {
9621 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 9622 can_plt_call = TRUE;
6ab189d5 9623 }
ad8e1ba5
AM		 9624 else
9625 {
9626 if (strcmp (input_section->output_section->name,
9627 ".init") == 0
9628 || strcmp (input_section->output_section->name,
9629 ".fini") == 0)
9630 (*_bfd_error_handler)
d003868e 9631 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 9632 "not supported using your crt files; "
9633 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 9634 input_bfd,
9635 input_section,
ad8e1ba5
AM		 9636 (long) rel->r_offset);
9637 else
9638 (*_bfd_error_handler)
d003868e 9639 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 9640 "does not allow automatic multiple TOCs; "
9641 "recompile with -mminimal-toc or "
9642 "-fno-optimize-sibling-calls, "
9643 "or make `%s' extern"),
d003868e
AM		 9644 input_bfd,
9645 input_section,
ad8e1ba5
AM		 9646 (long) rel->r_offset,
9647 sym_name,
9648 sym_name);
9649 bfd_set_error (bfd_error_bad_value);
9650 ret = FALSE;
9651 }
721956f4
AM		 9652 }
9653
b25116a9
AM		 9654 if (can_plt_call
9655 && stub_entry->stub_type == ppc_stub_plt_call)
9656 unresolved_reloc = FALSE;
9657 }
9658
8387904d
AM		 9659 if (stub_entry == NULL
9660 && get_opd_info (sec) != NULL)
9661 {
9662 /* The branch destination is the value of the opd entry. */
9663 bfd_vma off = (relocation - sec->output_section->vma
9664 - sec->output_offset + rel->r_addend);
9665 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9666 if (dest != (bfd_vma) -1)
9667 {
9668 relocation = dest;
9669 addend = 0;
9670 }
9671 }
9672
b25116a9
AM		 9673 /* If the branch is out of reach we ought to have a long
9674 branch stub. */
9675 from = (rel->r_offset
9676 + input_section->output_offset
9677 + input_section->output_section->vma);
9678
9679 if (stub_entry == NULL
9680 && (relocation + rel->r_addend - from + max_br_offset
9681 >= 2 * max_br_offset)
9682 && r_type != R_PPC64_ADDR14_BRTAKEN
9683 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 9684 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9685 htab);
b25116a9
AM		 9686
9687 if (stub_entry != NULL)
9688 {
9689 /* Munge up the value and addend so that we call the stub
9690 rather than the procedure directly. */
9691 relocation = (stub_entry->stub_offset
9692 + stub_entry->stub_sec->output_offset
9693 + stub_entry->stub_sec->output_section->vma);
9694 addend = 0;
9695 }
9696
9697 if (insn != 0)
9698 {
9699 if (is_power4)
721956f4 9700 {
b25116a9
AM		 9701 /* Set 'a' bit. This is 0b00010 in BO field for branch
9702 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9703 for branch on CTR insns (BO == 1a00t or 1a01t). */
9704 if ((insn & (0x14 << 21)) == (0x04 << 21))
9705 insn |= 0x02 << 21;
9706 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9707 insn |= 0x08 << 21;
9708 else
9709 break;
9710 }
9711 else
9712 {
9713 /* Invert 'y' bit if not the default. */
9714 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9715 insn ^= 0x01 << 21;
721956f4 9716 }
b25116a9
AM		 9717
9718 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 9719 }
e86ce104 9720
06da1e8e
AM		 9721 /* NOP out calls to undefined weak functions.
9722 We can thus call a weak function without first
9723 checking whether the function is defined. */
b25116a9 9724 else if (h != NULL
039b3fef 9725 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 9726 && r_type == R_PPC64_REL24
9727 && relocation == 0
9728 && rel->r_addend == 0)
e86ce104 9729 {
06da1e8e
AM		 9730 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9731 continue;
e86ce104 9732 }
65f38f15
AM		 9733 break;
9734 }
5bd4f169 9735
65f38f15 9736 /* Set `addend'. */
411e1bfb 9737 tls_type = 0;
65f38f15
AM		 9738 switch (r_type)
9739 {
9740 default:
9741 (*_bfd_error_handler)
d003868e
AM		 9742 (_("%B: unknown relocation type %d for symbol %s"),
9743 input_bfd, (int) r_type, sym_name);
5bd4f169 9744
65f38f15 9745 bfd_set_error (bfd_error_bad_value);
b34976b6 9746 ret = FALSE;
65f38f15 9747 continue;
5bd4f169 9748
65f38f15 9749 case R_PPC64_NONE:
411e1bfb 9750 case R_PPC64_TLS:
04c9666a
AM		 9751 case R_PPC64_GNU_VTINHERIT:
9752 case R_PPC64_GNU_VTENTRY:
65f38f15 9753 continue;
5bd4f169
AM		 9754
9755 /* GOT16 relocations. Like an ADDR16 using the symbol's
9756 address in the GOT as relocation value instead of the
411e1bfb 9757 symbol's value itself. Also, create a GOT entry for the
5bd4f169 9758 symbol and put the symbol value there. */
411e1bfb
AM		 9759 case R_PPC64_GOT_TLSGD16:
9760 case R_PPC64_GOT_TLSGD16_LO:
9761 case R_PPC64_GOT_TLSGD16_HI:
9762 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 9763 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 9764 goto dogot;
9765
9766 case R_PPC64_GOT_TLSLD16:
9767 case R_PPC64_GOT_TLSLD16_LO:
9768 case R_PPC64_GOT_TLSLD16_HI:
9769 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9770 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 9771 goto dogot;
9772
9773 case R_PPC64_GOT_TPREL16_DS:
9774 case R_PPC64_GOT_TPREL16_LO_DS:
9775 case R_PPC64_GOT_TPREL16_HI:
9776 case R_PPC64_GOT_TPREL16_HA:
9777 tls_type = TLS_TLS | TLS_TPREL;
9778 goto dogot;
9779
9780 case R_PPC64_GOT_DTPREL16_DS:
9781 case R_PPC64_GOT_DTPREL16_LO_DS:
9782 case R_PPC64_GOT_DTPREL16_HI:
9783 case R_PPC64_GOT_DTPREL16_HA:
9784 tls_type = TLS_TLS | TLS_DTPREL;
9785 goto dogot;
9786
65f38f15
AM		 9787 case R_PPC64_GOT16:
9788 case R_PPC64_GOT16_LO:
9789 case R_PPC64_GOT16_HI:
9790 case R_PPC64_GOT16_HA:
9791 case R_PPC64_GOT16_DS:
9792 case R_PPC64_GOT16_LO_DS:
411e1bfb 9793 dogot:
5bd4f169
AM		 9794 {
9795 /* Relocation is to the entry for this symbol in the global
9796 offset table. */
e717da7e 9797 asection *got;
d881513a 9798 bfd_vma *offp;
5bd4f169 9799 bfd_vma off;
d881513a 9800 unsigned long indx = 0;
65f38f15 9801
d881513a
AM		 9802 if (tls_type == (TLS_TLS | TLS_LD)
9803 && (h == NULL
f5385ebf 9804 || !h->elf.def_dynamic))
e717da7e 9805 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 9806 else
5bd4f169 9807 {
d881513a 9808 struct got_entry *ent;
5bd4f169 9809
d881513a
AM		 9810 if (h != NULL)
9811 {
9812 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 9813 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
9814 &h->elf)
d881513a 9815 || (info->shared
039b3fef 9816 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 9817 /* This is actually a static link, or it is a
9818 -Bsymbolic link and the symbol is defined
9819 locally, or the symbol was forced to be local
9820 because of a version file. */
9821 ;
9822 else
9823 {
039b3fef 9824 indx = h->elf.dynindx;
d881513a
AM		 9825 unresolved_reloc = FALSE;
9826 }
039b3fef 9827 ent = h->elf.got.glist;
d881513a 9828 }
411e1bfb 9829 else
5bd4f169 9830 {
d881513a
AM		 9831 if (local_got_ents == NULL)
9832 abort ();
9833 ent = local_got_ents[r_symndx];
5bd4f169 9834 }
d881513a
AM		 9835
9836 for (; ent != NULL; ent = ent->next)
9837 if (ent->addend == rel->r_addend
e717da7e 9838 && ent->owner == input_bfd
d881513a
AM		 9839 && ent->tls_type == tls_type)
9840 break;
9841 if (ent == NULL)
9842 abort ();
9843 offp = &ent->got.offset;
5bd4f169 9844 }
411e1bfb 9845
e717da7e
AM		 9846 got = ppc64_elf_tdata (input_bfd)->got;
9847 if (got == NULL)
9848 abort ();
9849
411e1bfb
AM		 9850 /* The offset must always be a multiple of 8. We use the
9851 least significant bit to record whether we have already
9852 processed this entry. */
d881513a 9853 off = *offp;
411e1bfb
AM		 9854 if ((off & 1) != 0)
9855 off &= ~1;
5bd4f169
AM		 9856 else
9857 {
411e1bfb
AM		 9858 /* Generate relocs for the dynamic linker, except in
9859 the case of TLSLD where we'll use one entry per
9860 module. */
e717da7e
AM		 9861 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
9862
d881513a 9863 *offp = off | 1;
4e795f50
AM		 9864 if ((info->shared || indx != 0)
9865 && (h == NULL
039b3fef
AM		 9866 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9867 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 9868 {
e717da7e
AM		 9869 outrel.r_offset = (got->output_section->vma
9870 + got->output_offset
411e1bfb 9871 + off);
81407a69 9872 outrel.r_addend = rel->r_addend;
d881513a 9873 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 9874 {
411e1bfb 9875 outrel.r_addend = 0;
e515b051 9876 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 9877 if (tls_type == (TLS_TLS | TLS_GD))
9878 {
e717da7e
AM		 9879 loc = relgot->contents;
9880 loc += (relgot->reloc_count++
d881513a
AM		 9881 * sizeof (Elf64_External_Rela));
9882 bfd_elf64_swap_reloca_out (output_bfd,
9883 &outrel, loc);
e515b051 9884 outrel.r_offset += 8;
81407a69 9885 outrel.r_addend = rel->r_addend;
d881513a
AM		 9886 outrel.r_info
9887 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 9888 }
411e1bfb 9889 }
951fd09b 9890 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 9891 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 9892 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 9893 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
9894 else if (indx == 0)
81407a69
AM		 9895 {
9896 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
9897
9898 /* Write the .got section contents for the sake
9899 of prelink. */
e717da7e 9900 loc = got->contents + off;
23fbd6fa
JJ		 9901 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
9902 loc);
81407a69 9903 }
411e1bfb
AM		 9904 else
9905 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 9906
9907 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 9908 {
9909 outrel.r_addend += relocation;
9910 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 9911 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 9912 }
e717da7e
AM		 9913 loc = relgot->contents;
9914 loc += (relgot->reloc_count++
411e1bfb
AM		 9915 * sizeof (Elf64_External_Rela));
9916 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
9917 }
9918
ad8e1ba5 9919 /* Init the .got section contents here if we're not
81407a69 9920 emitting a reloc. */
d881513a 9921 else
411e1bfb 9922 {
d881513a 9923 relocation += rel->r_addend;
7b609f53
AM		 9924 if (tls_type == (TLS_TLS | TLS_LD))
9925 relocation = 1;
9926 else if (tls_type != 0)
411e1bfb 9927 {
e1918d23 9928 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 9929 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 9930 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 9931
7b609f53
AM		 9932 if (tls_type == (TLS_TLS | TLS_GD))
9933 {
9934 bfd_put_64 (output_bfd, relocation,
e717da7e 9935 got->contents + off + 8);
7b609f53
AM		 9936 relocation = 1;
9937 }
411e1bfb 9938 }
7b609f53 9939
411e1bfb 9940 bfd_put_64 (output_bfd, relocation,
e717da7e 9941 got->contents + off);
5bd4f169
AM		 9942 }
9943 }
9944
65f38f15
AM		 9945 if (off >= (bfd_vma) -2)
9946 abort ();
9947
e717da7e 9948 relocation = got->output_offset + off;
65f38f15 9949
5bd4f169 9950 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 9951 addend = -TOC_BASE_OFF;
5bd4f169 9952 }
65f38f15
AM		 9953 break;
9954
9955 case R_PPC64_PLT16_HA:
9956 case R_PPC64_PLT16_HI:
9957 case R_PPC64_PLT16_LO:
9958 case R_PPC64_PLT32:
9959 case R_PPC64_PLT64:
9960 /* Relocation is to the entry for this symbol in the
9961 procedure linkage table. */
9962
9963 /* Resolve a PLT reloc against a local symbol directly,
9964 without using the procedure linkage table. */
9965 if (h == NULL)
9966 break;
9967
411e1bfb
AM		 9968 /* It's possible that we didn't make a PLT entry for this
9969 symbol. This happens when statically linking PIC code,
9970 or when using -Bsymbolic. Go find a match if there is a
9971 PLT entry. */
4ce794b7 9972 if (htab->plt != NULL)
65f38f15 9973 {
411e1bfb 9974 struct plt_entry *ent;
039b3fef 9975 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 9976 if (ent->addend == rel->r_addend
9977 && ent->plt.offset != (bfd_vma) -1)
9978 {
4ce794b7
AM		 9979 relocation = (htab->plt->output_section->vma
9980 + htab->plt->output_offset
411e1bfb
AM		 9981 + ent->plt.offset);
9982 unresolved_reloc = FALSE;
9983 }
65f38f15 9984 }
65f38f15 9985 break;
5bd4f169 9986
0b13192e
AM		 9987 case R_PPC64_TOC:
9988 /* Relocation value is TOC base. */
9989 relocation = TOCstart;
9990 if (r_symndx == 0)
9991 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 9992 else if (unresolved_reloc)
9993 ;
9994 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 9995 relocation += htab->stub_group[sec->id].toc_off;
9996 else
9997 unresolved_reloc = TRUE;
9998 goto dodyn2;
9999
5bd4f169
AM		 10000 /* TOC16 relocs. We want the offset relative to the TOC base,
10001 which is the address of the start of the TOC plus 0x8000.
10002 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10003 in this order. */
65f38f15
AM		 10004 case R_PPC64_TOC16:
10005 case R_PPC64_TOC16_LO:
10006 case R_PPC64_TOC16_HI:
10007 case R_PPC64_TOC16_DS:
10008 case R_PPC64_TOC16_LO_DS:
10009 case R_PPC64_TOC16_HA:
ad8e1ba5 10010 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10011 break;
10012
10013 /* Relocate against the beginning of the section. */
65f38f15
AM		 10014 case R_PPC64_SECTOFF:
10015 case R_PPC64_SECTOFF_LO:
10016 case R_PPC64_SECTOFF_HI:
10017 case R_PPC64_SECTOFF_DS:
10018 case R_PPC64_SECTOFF_LO_DS:
10019 case R_PPC64_SECTOFF_HA:
4ce794b7 10020 if (sec != NULL)
65f38f15 10021 addend -= sec->output_section->vma;
5bd4f169
AM		 10022 break;
10023
721956f4
AM		 10024 case R_PPC64_REL14:
10025 case R_PPC64_REL14_BRNTAKEN:
10026 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10027 case R_PPC64_REL24:
10028 break;
10029
411e1bfb
AM		 10030 case R_PPC64_TPREL16:
10031 case R_PPC64_TPREL16_LO:
10032 case R_PPC64_TPREL16_HI:
10033 case R_PPC64_TPREL16_HA:
10034 case R_PPC64_TPREL16_DS:
10035 case R_PPC64_TPREL16_LO_DS:
10036 case R_PPC64_TPREL16_HIGHER:
10037 case R_PPC64_TPREL16_HIGHERA:
10038 case R_PPC64_TPREL16_HIGHEST:
10039 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10040 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10041 if (info->shared)
10042 /* The TPREL16 relocs shouldn't really be used in shared
10043 libs as they will result in DT_TEXTREL being set, but
10044 support them anyway. */
10045 goto dodyn;
10046 break;
10047
10048 case R_PPC64_DTPREL16:
10049 case R_PPC64_DTPREL16_LO:
10050 case R_PPC64_DTPREL16_HI:
10051 case R_PPC64_DTPREL16_HA:
10052 case R_PPC64_DTPREL16_DS:
10053 case R_PPC64_DTPREL16_LO_DS:
10054 case R_PPC64_DTPREL16_HIGHER:
10055 case R_PPC64_DTPREL16_HIGHERA:
10056 case R_PPC64_DTPREL16_HIGHEST:
10057 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10058 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10059 break;
10060
e515b051
AM		 10061 case R_PPC64_DTPMOD64:
10062 relocation = 1;
10063 addend = 0;
10064 goto dodyn;
10065
411e1bfb 10066 case R_PPC64_TPREL64:
e1918d23 10067 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10068 goto dodyn;
10069
10070 case R_PPC64_DTPREL64:
e1918d23 10071 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10072 /* Fall thru */
10073
65f38f15
AM		 10074 /* Relocations that may need to be propagated if this is a
10075 dynamic object. */
04c9666a 10076 case R_PPC64_REL30:
65f38f15
AM		 10077 case R_PPC64_REL32:
10078 case R_PPC64_REL64:
10079 case R_PPC64_ADDR14:
10080 case R_PPC64_ADDR14_BRNTAKEN:
10081 case R_PPC64_ADDR14_BRTAKEN:
10082 case R_PPC64_ADDR16:
10083 case R_PPC64_ADDR16_DS:
10084 case R_PPC64_ADDR16_HA:
10085 case R_PPC64_ADDR16_HI:
10086 case R_PPC64_ADDR16_HIGHER:
10087 case R_PPC64_ADDR16_HIGHERA:
10088 case R_PPC64_ADDR16_HIGHEST:
10089 case R_PPC64_ADDR16_HIGHESTA:
10090 case R_PPC64_ADDR16_LO:
10091 case R_PPC64_ADDR16_LO_DS:
10092 case R_PPC64_ADDR24:
65f38f15
AM		 10093 case R_PPC64_ADDR32:
10094 case R_PPC64_ADDR64:
10095 case R_PPC64_UADDR16:
10096 case R_PPC64_UADDR32:
10097 case R_PPC64_UADDR64:
ec338859
AM		 10098 /* r_symndx will be zero only for relocs against symbols
10099 from removed linkonce sections, or sections discarded by
10100 a linker script. */
411e1bfb 10101 dodyn:
5d1634d7
AM		 10102 if (r_symndx == 0)
10103 break;
10104 /* Fall thru. */
10105
0b13192e 10106 dodyn2:
5d1634d7 10107 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10108 break;
10109
41bd81ab
AM		 10110 if (NO_OPD_RELOCS && is_opd)
10111 break;
10112
65f38f15 10113 if ((info->shared
4e795f50 10114 && (h == NULL
039b3fef
AM		 10115 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10116 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10117 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10118 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10119 || (ELIMINATE_COPY_RELOCS
10120 && !info->shared
65f38f15 10121 && h != NULL
039b3fef 10122 && h->elf.dynindx != -1
f5385ebf
AM		 10123 && !h->elf.non_got_ref
10124 && h->elf.def_dynamic
10125 && !h->elf.def_regular))
65f38f15
AM		 10126 {
10127 Elf_Internal_Rela outrel;
b34976b6 10128 bfd_boolean skip, relocate;
65f38f15 10129 asection *sreloc;
947216bf 10130 bfd_byte *loc;
1cf1f670 10131 bfd_vma out_off;
65f38f15
AM		 10132
10133 /* When generating a dynamic object, these relocations
10134 are copied into the output file to be resolved at run
10135 time. */
10136
b34976b6
AM		 10137 skip = FALSE;
10138 relocate = FALSE;
65f38f15 10139
1cf1f670
AM		 10140 out_off = _bfd_elf_section_offset (output_bfd, info,
10141 input_section, rel->r_offset);
10142 if (out_off == (bfd_vma) -1)
b34976b6 10143 skip = TRUE;
1cf1f670 10144 else if (out_off == (bfd_vma) -2)
b34976b6 10145 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10146 out_off += (input_section->output_section->vma
10147 + input_section->output_offset);
10148 outrel.r_offset = out_off;
411e1bfb 10149 outrel.r_addend = rel->r_addend;
65f38f15 10150
1cf1f670
AM		 10151 /* Optimize unaligned reloc use. */
10152 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10153 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10154 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10155 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10156 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10157 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10158 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10159 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10160 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10161
65f38f15 10162 if (skip)
0bb2d96a 10163 memset (&outrel, 0, sizeof outrel);
039b3fef 10164 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10165 && !is_opd
10166 && r_type != R_PPC64_TOC)
039b3fef 10167 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10168 else
10169 {
41bd81ab
AM		 10170 /* This symbol is local, or marked to become local,
10171 or this is an opd section reloc which must point
10172 at a local function. */
65f38f15 10173 outrel.r_addend += relocation;
e86ce104 10174 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10175 {
3fad3c7c 10176 if (is_opd && h != NULL)
afbe61cf
AM		 10177 {
10178 /* Lie about opd entries. This case occurs
10179 when building shared libraries and we
10180 reference a function in another shared
3fad3c7c
AM		 10181 lib. The same thing happens for a weak
10182 definition in an application that's
10183 overridden by a strong definition in a
10184 shared lib. (I believe this is a generic
10185 bug in binutils handling of weak syms.)
10186 In these cases we won't use the opd
1e2f5b6e 10187 entry in this lib. */
b34976b6 10188 unresolved_reloc = FALSE;
afbe61cf 10189 }
65f38f15 10190 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10191
10192 /* We need to relocate .opd contents for ld.so.
10193 Prelink also wants simple and consistent rules
10194 for relocs. This make all RELATIVE relocs have
10195 *r_offset equal to r_addend. */
10196 relocate = TRUE;
65f38f15
AM		 10197 }
10198 else
10199 {
10200 long indx = 0;
10201
41bd81ab 10202 if (bfd_is_abs_section (sec))
65f38f15
AM		 10203 ;
10204 else if (sec == NULL || sec->owner == NULL)
10205 {
10206 bfd_set_error (bfd_error_bad_value);
b34976b6 10207 return FALSE;
65f38f15
AM		 10208 }
10209 else
10210 {
10211 asection *osec;
10212
10213 osec = sec->output_section;
10214 indx = elf_section_data (osec)->dynindx;
10215
10216 /* We are turning this relocation into one
10217 against a section symbol, so subtract out
10218 the output section's address but not the
10219 offset of the input section in the output
10220 section. */
10221 outrel.r_addend -= osec->vma;
10222 }
10223
10224 outrel.r_info = ELF64_R_INFO (indx, r_type);
10225 }
10226 }
10227
10228 sreloc = elf_section_data (input_section)->sreloc;
10229 if (sreloc == NULL)
10230 abort ();
10231
947216bf
AM		 10232 loc = sreloc->contents;
10233 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10234 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10235
10236 /* If this reloc is against an external symbol, it will
10237 be computed at runtime, so there's no need to do
81407a69
AM		 10238 anything now. However, for the sake of prelink ensure
10239 that the section contents are a known value. */
65f38f15 10240 if (! relocate)
81407a69
AM		 10241 {
10242 unresolved_reloc = FALSE;
10243 /* The value chosen here is quite arbitrary as ld.so
10244 ignores section contents except for the special
10245 case of .opd where the contents might be accessed
10246 before relocation. Choose zero, as that won't
10247 cause reloc overflow. */
10248 relocation = 0;
10249 addend = 0;
10250 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10251 to improve backward compatibility with older
10252 versions of ld. */
10253 if (r_type == R_PPC64_ADDR64)
10254 addend = outrel.r_addend;
10255 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10256 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10257 addend = (input_section->output_section->vma
10258 + input_section->output_offset
10259 + rel->r_offset);
81407a69 10260 }
65f38f15 10261 }
5bd4f169
AM		 10262 break;
10263
65f38f15
AM		 10264 case R_PPC64_COPY:
10265 case R_PPC64_GLOB_DAT:
10266 case R_PPC64_JMP_SLOT:
10267 case R_PPC64_RELATIVE:
10268 /* We shouldn't ever see these dynamic relocs in relocatable
10269 files. */
ae9a127f 10270 /* Fall through. */
65f38f15
AM		 10271
10272 case R_PPC64_PLTGOT16:
10273 case R_PPC64_PLTGOT16_DS:
10274 case R_PPC64_PLTGOT16_HA:
10275 case R_PPC64_PLTGOT16_HI:
10276 case R_PPC64_PLTGOT16_LO:
10277 case R_PPC64_PLTGOT16_LO_DS:
10278 case R_PPC64_PLTREL32:
10279 case R_PPC64_PLTREL64:
10280 /* These ones haven't been implemented yet. */
10281
10282 (*_bfd_error_handler)
d003868e
AM		 10283 (_("%B: relocation %s is not supported for symbol %s."),
10284 input_bfd,
4ce794b7 10285 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10286
10287 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10288 ret = FALSE;
5bd4f169 10289 continue;
65f38f15 10290 }
5bd4f169 10291
65f38f15
AM		 10292 /* Do any further special processing. */
10293 switch (r_type)
10294 {
10295 default:
10296 break;
10297
10298 case R_PPC64_ADDR16_HA:
10299 case R_PPC64_ADDR16_HIGHERA:
10300 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10301 case R_PPC64_GOT16_HA:
10302 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10303 case R_PPC64_PLT16_HA:
10304 case R_PPC64_TOC16_HA:
10305 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10306 case R_PPC64_TPREL16_HA:
10307 case R_PPC64_DTPREL16_HA:
10308 case R_PPC64_GOT_TLSGD16_HA:
10309 case R_PPC64_GOT_TLSLD16_HA:
10310 case R_PPC64_GOT_TPREL16_HA:
10311 case R_PPC64_GOT_DTPREL16_HA:
10312 case R_PPC64_TPREL16_HIGHER:
10313 case R_PPC64_TPREL16_HIGHERA:
10314 case R_PPC64_TPREL16_HIGHEST:
10315 case R_PPC64_TPREL16_HIGHESTA:
10316 case R_PPC64_DTPREL16_HIGHER:
10317 case R_PPC64_DTPREL16_HIGHERA:
10318 case R_PPC64_DTPREL16_HIGHEST:
10319 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10320 /* It's just possible that this symbol is a weak symbol
10321 that's not actually defined anywhere. In that case,
10322 'sec' would be NULL, and we should leave the symbol
10323 alone (it will be set to zero elsewhere in the link). */
10324 if (sec != NULL)
e515b051
AM		 10325 /* Add 0x10000 if sign bit in 0:15 is set.
10326 Bits 0:15 are not used. */
10327 addend += 0x8000;
65f38f15
AM		 10328 break;
10329
10330 case R_PPC64_ADDR16_DS:
10331 case R_PPC64_ADDR16_LO_DS:
10332 case R_PPC64_GOT16_DS:
10333 case R_PPC64_GOT16_LO_DS:
10334 case R_PPC64_PLT16_LO_DS:
10335 case R_PPC64_SECTOFF_DS:
10336 case R_PPC64_SECTOFF_LO_DS:
10337 case R_PPC64_TOC16_DS:
10338 case R_PPC64_TOC16_LO_DS:
10339 case R_PPC64_PLTGOT16_DS:
10340 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10341 case R_PPC64_GOT_TPREL16_DS:
10342 case R_PPC64_GOT_TPREL16_LO_DS:
10343 case R_PPC64_GOT_DTPREL16_DS:
10344 case R_PPC64_GOT_DTPREL16_LO_DS:
10345 case R_PPC64_TPREL16_DS:
10346 case R_PPC64_TPREL16_LO_DS:
10347 case R_PPC64_DTPREL16_DS:
10348 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10349 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10350 mask = 3;
10351 /* If this reloc is against an lq insn, then the value must be
10352 a multiple of 16. This is somewhat of a hack, but the
10353 "correct" way to do this by defining _DQ forms of all the
10354 _DS relocs bloats all reloc switches in this file. It
10355 doesn't seem to make much sense to use any of these relocs
10356 in data, so testing the insn should be safe. */
494dac0c 10357 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10358 mask = 15;
10359 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10360 {
10361 (*_bfd_error_handler)
d003868e
AM		 10362 (_("%B: error: relocation %s not a multiple of %d"),
10363 input_bfd,
4ce794b7 10364 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10365 mask + 1);
65f38f15 10366 bfd_set_error (bfd_error_bad_value);
b34976b6 10367 ret = FALSE;
65f38f15
AM		 10368 continue;
10369 }
10370 break;
5bd4f169
AM		 10371 }
10372
239e1f3a
AM		 10373 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10374 because such sections are not SEC_ALLOC and thus ld.so will
10375 not process them. */
65f38f15 10376 if (unresolved_reloc
239e1f3a 10377 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10378 && h->elf.def_dynamic))
9c07fe7c
AM		 10379 {
10380 (*_bfd_error_handler)
d003868e
AM		 10381 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10382 input_bfd,
10383 input_section,
9c07fe7c 10384 (long) rel->r_offset,
7b609f53 10385 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10386 h->elf.root.root.string);
b34976b6 10387 ret = FALSE;
9c07fe7c 10388 }
5bd4f169 10389
65f38f15 10390 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10391 input_bfd,
10392 input_section,
10393 contents,
411e1bfb 10394 rel->r_offset,
5bd4f169
AM		 10395 relocation,
10396 addend);
10397
ef60b7ff 10398 if (r != bfd_reloc_ok)
5bd4f169 10399 {
cd27b276
AM		 10400 if (sym_name == NULL)
10401 sym_name = "(null)";
10402 if (r == bfd_reloc_overflow)
5bd4f169 10403 {
cd27b276
AM		 10404 if (warned)
10405 continue;
10406 if (h != NULL
039b3fef 10407 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10408 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10409 {
10410 /* Assume this is a call protected by other code that
10411 detects the symbol is undefined. If this is the case,
10412 we can safely ignore the overflow. If not, the
10413 program is hosed anyway, and a little warning isn't
10414 going to help. */
10415
10416 continue;
10417 }
10418
ef60b7ff 10419 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10420 (info, (h ? &h->elf.root : NULL), sym_name,
10421 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10422 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10423 return FALSE;
ef60b7ff
AM		 10424 }
10425 else
10426 {
10427 (*_bfd_error_handler)
d003868e
AM		 10428 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10429 input_bfd,
10430 input_section,
7b609f53 10431 (long) rel->r_offset,
4ce794b7 10432 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10433 sym_name,
10434 (int) r);
b34976b6 10435 ret = FALSE;
ef60b7ff 10436 }
5bd4f169 10437 }
5bd4f169
AM		 10438 }
10439
645ea6a9
AM		 10440 /* If we're emitting relocations, then shortly after this function
10441 returns, reloc offsets and addends for this section will be
10442 adjusted. Worse, reloc symbol indices will be for the output
10443 file rather than the input. Let opd_entry_value know. */
10444 input_section->reloc_done = info->emitrelocations;
5bd4f169
AM		 10445 return ret;
10446}
10447
754021d0
AM		 10448/* Adjust the value of any local symbols in opd sections. */
10449
10450static bfd_boolean
10451ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10452 const char *name ATTRIBUTE_UNUSED,
10453 Elf_Internal_Sym *elfsym,
10454 asection *input_sec,
10455 struct elf_link_hash_entry *h)
10456{
4025353c 10457 long *opd_adjust, adjust;
754021d0
AM		 10458 bfd_vma value;
10459
4025353c
AM		 10460 if (h != NULL)
10461 return TRUE;
10462
10463 opd_adjust = get_opd_info (input_sec);
10464 if (opd_adjust == NULL)
754021d0
AM		 10465 return TRUE;
10466
10467 value = elfsym->st_value - input_sec->output_offset;
10468 if (!info->relocatable)
10469 value -= input_sec->output_section->vma;
10470
3f764659 10471 adjust = opd_adjust[value / 8];
4025353c
AM		 10472 if (adjust == -1)
10473 elfsym->st_value = 0;
10474 else
10475 elfsym->st_value += adjust;
754021d0
AM		 10476 return TRUE;
10477}
10478
5bd4f169
AM		 10479/* Finish up dynamic symbol handling. We set the contents of various
10480 dynamic sections here. */
10481
b34976b6 10482static bfd_boolean
4ce794b7
AM		 10483ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10484 struct bfd_link_info *info,
10485 struct elf_link_hash_entry *h,
10486 Elf_Internal_Sym *sym)
5bd4f169 10487{
65f38f15 10488 struct ppc_link_hash_table *htab;
5bd4f169 10489 bfd *dynobj;
8387904d
AM		 10490 struct plt_entry *ent;
10491 Elf_Internal_Rela rela;
10492 bfd_byte *loc;
5bd4f169 10493
65f38f15
AM		 10494 htab = ppc_hash_table (info);
10495 dynobj = htab->elf.dynobj;
5bd4f169 10496
8387904d
AM		 10497 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10498 if (ent->plt.offset != (bfd_vma) -1)
10499 {
10500 /* This symbol has an entry in the procedure linkage
10501 table. Set it up. */
10502
10503 if (htab->plt == NULL
10504 || htab->relplt == NULL
10505 || htab->glink == NULL)
10506 abort ();
10507
10508 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10509 fill in the PLT entry. */
10510 rela.r_offset = (htab->plt->output_section->vma
10511 + htab->plt->output_offset
10512 + ent->plt.offset);
10513 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10514 rela.r_addend = ent->addend;
10515
10516 loc = htab->relplt->contents;
10517 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10518 * sizeof (Elf64_External_Rela));
10519 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10520 }
5bd4f169 10521
f5385ebf 10522 if (h->needs_copy)
5bd4f169 10523 {
5bd4f169 10524 Elf_Internal_Rela rela;
947216bf 10525 bfd_byte *loc;
5bd4f169 10526
65f38f15 10527 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10528
65f38f15
AM		 10529 if (h->dynindx == -1
10530 || (h->root.type != bfd_link_hash_defined
10531 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10532 || htab->relbss == NULL)
65f38f15 10533 abort ();
5bd4f169
AM		 10534
10535 rela.r_offset = (h->root.u.def.value
10536 + h->root.u.def.section->output_section->vma
10537 + h->root.u.def.section->output_offset);
10538 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10539 rela.r_addend = 0;
4ce794b7
AM		 10540 loc = htab->relbss->contents;
10541 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10542 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10543 }
10544
5bd4f169
AM		 10545 /* Mark some specially defined symbols as absolute. */
10546 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10547 sym->st_shndx = SHN_ABS;
10548
b34976b6 10549 return TRUE;
5bd4f169
AM		 10550}
10551
65f38f15
AM		 10552/* Used to decide how to sort relocs in an optimal manner for the
10553 dynamic linker, before writing them out. */
10554
10555static enum elf_reloc_type_class
4ce794b7 10556ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10557{
04c9666a 10558 enum elf_ppc64_reloc_type r_type;
a33d1f77 10559
4ce794b7 10560 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10561 switch (r_type)
65f38f15
AM		 10562 {
10563 case R_PPC64_RELATIVE:
10564 return reloc_class_relative;
10565 case R_PPC64_JMP_SLOT:
10566 return reloc_class_plt;
10567 case R_PPC64_COPY:
10568 return reloc_class_copy;
10569 default:
10570 return reloc_class_normal;
10571 }
10572}
10573
5bd4f169
AM		 10574/* Finish up the dynamic sections. */
10575
b34976b6 10576static bfd_boolean
4ce794b7
AM		 10577ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10578 struct bfd_link_info *info)
5bd4f169 10579{
65f38f15
AM		 10580 struct ppc_link_hash_table *htab;
10581 bfd *dynobj;
5bd4f169 10582 asection *sdyn;
5bd4f169 10583
65f38f15
AM		 10584 htab = ppc_hash_table (info);
10585 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10586 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10587
65f38f15 10588 if (htab->elf.dynamic_sections_created)
5bd4f169 10589 {
5bd4f169
AM		 10590 Elf64_External_Dyn *dyncon, *dynconend;
10591
4ce794b7 10592 if (sdyn == NULL || htab->got == NULL)
65f38f15 10593 abort ();
5bd4f169
AM		 10594
10595 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 10596 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 10597 for (; dyncon < dynconend; dyncon++)
10598 {
10599 Elf_Internal_Dyn dyn;
19397422 10600 asection *s;
5bd4f169
AM		 10601
10602 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10603
10604 switch (dyn.d_tag)
10605 {
65f38f15
AM		 10606 default:
10607 continue;
5bd4f169 10608
5d1634d7 10609 case DT_PPC64_GLINK:
4ce794b7 10610 s = htab->glink;
6348e046 10611 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 10612 /* We stupidly defined DT_PPC64_GLINK to be the start
10613 of glink rather than the first entry point, which is
10614 what ld.so needs, and now have a bigger stub to
10615 support automatic multiple TOCs. */
10616 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 10617 break;
10618
19397422
AM		 10619 case DT_PPC64_OPD:
10620 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10621 if (s == NULL)
10622 continue;
10623 dyn.d_un.d_ptr = s->vma;
19397422
AM		 10624 break;
10625
10626 case DT_PPC64_OPDSZ:
10627 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10628 if (s == NULL)
10629 continue;
eea6121a 10630 dyn.d_un.d_val = s->size;
19397422
AM		 10631 break;
10632
65f38f15 10633 case DT_PLTGOT:
4ce794b7 10634 s = htab->plt;
6348e046 10635 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 10636 break;
10637
10638 case DT_JMPREL:
4ce794b7 10639 s = htab->relplt;
6348e046 10640 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 10641 break;
5bd4f169 10642
65f38f15 10643 case DT_PLTRELSZ:
eea6121a 10644 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 10645 break;
10646
10647 case DT_RELASZ:
10648 /* Don't count procedure linkage table relocs in the
10649 overall reloc count. */
4ce794b7 10650 s = htab->relplt;
6348e046
AM		 10651 if (s == NULL)
10652 continue;
eea6121a 10653 dyn.d_un.d_val -= s->size;
6348e046
AM		 10654 break;
10655
10656 case DT_RELA:
10657 /* We may not be using the standard ELF linker script.
10658 If .rela.plt is the first .rela section, we adjust
10659 DT_RELA to not include it. */
4ce794b7 10660 s = htab->relplt;
6348e046
AM		 10661 if (s == NULL)
10662 continue;
10663 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10664 continue;
eea6121a 10665 dyn.d_un.d_ptr += s->size;
65f38f15 10666 break;
5bd4f169 10667 }
5bd4f169 10668
65f38f15 10669 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 10670 }
5bd4f169
AM		 10671 }
10672
eea6121a 10673 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 10674 {
10675 /* Fill in the first entry in the global offset table.
10676 We use it to hold the link-time TOCbase. */
10677 bfd_put_64 (output_bfd,
60ee0d4a 10678 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 10679 htab->got->contents);
5d1634d7
AM		 10680
10681 /* Set .got entry size. */
4ce794b7 10682 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 10683 }
10684
eea6121a 10685 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 10686 {
10687 /* Set .plt entry size. */
4ce794b7 10688 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 10689 = PLT_ENTRY_SIZE;
10690 }
10691
e717da7e 10692 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 10693 since we didn't add them to DYNOBJ. We know dynobj is the first
10694 bfd. */
e717da7e
AM		 10695 while ((dynobj = dynobj->link_next) != NULL)
10696 {
10697 asection *s;
7b53ace3 10698
ee75fd95 10699 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 10700 continue;
10701
e717da7e
AM		 10702 s = ppc64_elf_tdata (dynobj)->got;
10703 if (s != NULL
eea6121a 10704 && s->size != 0
e717da7e
AM		 10705 && s->output_section != bfd_abs_section_ptr
10706 && !bfd_set_section_contents (output_bfd, s->output_section,
10707 s->contents, s->output_offset,
eea6121a 10708 s->size))
e717da7e
AM		 10709 return FALSE;
10710 s = ppc64_elf_tdata (dynobj)->relgot;
10711 if (s != NULL
eea6121a 10712 && s->size != 0
e717da7e
AM		 10713 && s->output_section != bfd_abs_section_ptr
10714 && !bfd_set_section_contents (output_bfd, s->output_section,
10715 s->contents, s->output_offset,
eea6121a 10716 s->size))
e717da7e
AM		 10717 return FALSE;
10718 }
f6c52c13 10719
b34976b6 10720 return TRUE;
5bd4f169
AM		 10721}
10722
5bd4f169 10723#include "elf64-target.h"
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