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* amd64-linux-tdep.c: Update copyright year.
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3eb128b2 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
5bd4f169 14
ae9a127f
NC		 15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
4ce794b7
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
5bd4f169 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169
AM		 27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
04c9666a 33#include "elf/ppc64.h"
5d1634d7 34#include "elf64-ppc.h"
5bd4f169 35
805fc799 36static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 38static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 40static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 54static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 56
ad8e1ba5
AM		 57#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58#define TARGET_LITTLE_NAME "elf64-powerpcle"
59#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60#define TARGET_BIG_NAME "elf64-powerpc"
61#define ELF_ARCH bfd_arch_powerpc
62#define ELF_MACHINE_CODE EM_PPC64
63#define ELF_MAXPAGESIZE 0x10000
64#define elf_info_to_howto ppc64_elf_info_to_howto
65
66#define elf_backend_want_got_sym 0
67#define elf_backend_want_plt_sym 0
68#define elf_backend_plt_alignment 3
69#define elf_backend_plt_not_loaded 1
70#define elf_backend_got_symbol_offset 0
71#define elf_backend_got_header_size 8
ad8e1ba5
AM		 72#define elf_backend_can_gc_sections 1
73#define elf_backend_can_refcount 1
74#define elf_backend_rela_normal 1
75
e717da7e 76#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5
AM		 77#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 82#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM		 83
84#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 85#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
ad8e1ba5
AM		 87#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 89#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d
AM		 90#define elf_backend_check_directives ppc64_elf_check_directives
91#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5
AM		 92#define elf_backend_check_relocs ppc64_elf_check_relocs
93#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96#define elf_backend_hide_symbol ppc64_elf_hide_symbol
97#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99#define elf_backend_relocate_section ppc64_elf_relocate_section
100#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
101#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
102#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 103#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
2f89ff8d 104#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 105
5bd4f169
AM		 106/* The name of the dynamic interpreter. This is put in the .interp
107 section. */
108#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
109
110/* The size in bytes of an entry in the procedure linkage table. */
111#define PLT_ENTRY_SIZE 24
112
113/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 114#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 115
116/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 117#define TOC_BASE_OFF 0x8000
118
119/* Offset of tp and dtp pointers from start of TLS block. */
120#define TP_OFFSET 0x7000
121#define DTP_OFFSET 0x8000
5bd4f169 122
ad8e1ba5
AM		 123/* .plt call stub instructions. The normal stub is like this, but
124 sometimes the .plt entry crosses a 64k boundary and we need to
125 insert an addis to adjust r12. */
126#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM		 127#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
128#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
129#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
130#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
131#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
132 /* ld %r11,xxx+16@l(%r12) */
133#define BCTR 0x4e800420 /* bctr */
134
5d1634d7 135
ad8e1ba5
AM		 136#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
137#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
138
139#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
140
141/* glink call stub instructions. We enter with the index in R0, and the
142 address of glink entry in CTR. From that, we can calculate PLT0. */
143#define GLINK_CALL_STUB_SIZE (16*4)
144#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
145#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
146#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
147#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
148#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
149#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
150#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
151 /* sub %r12,%r12,%r11 */
152#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
153#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
154 /* ld %r11,xxx@l(%r12) */
155#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
156 /* ld %r2,8(%r12) */
157 /* mtctr %r11 */
158 /* ld %r11,16(%r12) */
159 /* bctr */
5d1634d7
AM		 160
161/* Pad with this. */
162#define NOP 0x60000000
163
721956f4
AM		 164/* Some other nops. */
165#define CROR_151515 0x4def7b82
166#define CROR_313131 0x4ffffb82
167
cedb70c5 168/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 169#define LI_R0_0 0x38000000 /* li %r0,0 */
170#define B_DOT 0x48000000 /* b . */
171
172/* After that, we need two instructions to load the index, followed by
173 a branch. */
174#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 175#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 176
deb0e272
AM		 177/* Instructions used by the save and restore reg functions. */
178#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
179#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
180#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
181#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 182#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
183#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 184#define LI_R12_0 0x39800000 /* li %r12,0 */
185#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
186#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
187#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 188#define BLR 0x4e800020 /* blr */
189
41bd81ab
AM		 190/* Since .opd is an array of descriptors and each entry will end up
191 with identical R_PPC64_RELATIVE relocs, there is really no need to
192 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 193 relocate .opd without reloc entries. */
41bd81ab
AM		 194#ifndef NO_OPD_RELOCS
195#define NO_OPD_RELOCS 0
196#endif
5bd4f169 197\f
f5e87a1d 198#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 199
5bd4f169 200/* Relocation HOWTO's. */
04c9666a 201static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 202
203static reloc_howto_type ppc64_elf_howto_raw[] = {
204 /* This reloc does nothing. */
205 HOWTO (R_PPC64_NONE, /* type */
206 0, /* rightshift */
411e1bfb
AM		 207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 32, /* bitsize */
b34976b6 209 FALSE, /* pc_relative */
5bd4f169 210 0, /* bitpos */
f5e87a1d 211 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC64_NONE", /* name */
b34976b6 214 FALSE, /* partial_inplace */
d006db6c 215 0, /* src_mask */
5bd4f169 216 0, /* dst_mask */
b34976b6 217 FALSE), /* pcrel_offset */
5bd4f169
AM		 218
219 /* A standard 32 bit relocation. */
220 HOWTO (R_PPC64_ADDR32, /* type */
221 0, /* rightshift */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
223 32, /* bitsize */
b34976b6 224 FALSE, /* pc_relative */
5bd4f169
AM		 225 0, /* bitpos */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR32", /* name */
b34976b6 229 FALSE, /* partial_inplace */
5bd4f169
AM		 230 0, /* src_mask */
231 0xffffffff, /* dst_mask */
b34976b6 232 FALSE), /* pcrel_offset */
5bd4f169
AM		 233
234 /* An absolute 26 bit branch; the lower two bits must be zero.
235 FIXME: we don't check that, we just clear them. */
236 HOWTO (R_PPC64_ADDR24, /* type */
237 0, /* rightshift */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
239 26, /* bitsize */
b34976b6 240 FALSE, /* pc_relative */
5bd4f169
AM		 241 0, /* bitpos */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR24", /* name */
b34976b6 245 FALSE, /* partial_inplace */
d006db6c 246 0, /* src_mask */
f5e87a1d 247 0x03fffffc, /* dst_mask */
b34976b6 248 FALSE), /* pcrel_offset */
5bd4f169
AM		 249
250 /* A standard 16 bit relocation. */
251 HOWTO (R_PPC64_ADDR16, /* type */
252 0, /* rightshift */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
b34976b6 255 FALSE, /* pc_relative */
5bd4f169
AM		 256 0, /* bitpos */
257 complain_overflow_bitfield, /* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC64_ADDR16", /* name */
b34976b6 260 FALSE, /* partial_inplace */
5bd4f169
AM		 261 0, /* src_mask */
262 0xffff, /* dst_mask */
b34976b6 263 FALSE), /* pcrel_offset */
5bd4f169
AM		 264
265 /* A 16 bit relocation without overflow. */
266 HOWTO (R_PPC64_ADDR16_LO, /* type */
267 0, /* rightshift */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
269 16, /* bitsize */
b34976b6 270 FALSE, /* pc_relative */
5bd4f169
AM		 271 0, /* bitpos */
272 complain_overflow_dont,/* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC64_ADDR16_LO", /* name */
b34976b6 275 FALSE, /* partial_inplace */
5bd4f169
AM		 276 0, /* src_mask */
277 0xffff, /* dst_mask */
b34976b6 278 FALSE), /* pcrel_offset */
5bd4f169
AM		 279
280 /* Bits 16-31 of an address. */
281 HOWTO (R_PPC64_ADDR16_HI, /* type */
282 16, /* rightshift */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
b34976b6 285 FALSE, /* pc_relative */
5bd4f169
AM		 286 0, /* bitpos */
287 complain_overflow_dont, /* complain_on_overflow */
288 bfd_elf_generic_reloc, /* special_function */
289 "R_PPC64_ADDR16_HI", /* name */
b34976b6 290 FALSE, /* partial_inplace */
5bd4f169
AM		 291 0, /* src_mask */
292 0xffff, /* dst_mask */
b34976b6 293 FALSE), /* pcrel_offset */
5bd4f169
AM		 294
295 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
296 bits, treated as a signed number, is negative. */
297 HOWTO (R_PPC64_ADDR16_HA, /* type */
298 16, /* rightshift */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
300 16, /* bitsize */
b34976b6 301 FALSE, /* pc_relative */
5bd4f169
AM		 302 0, /* bitpos */
303 complain_overflow_dont, /* complain_on_overflow */
805fc799 304 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 305 "R_PPC64_ADDR16_HA", /* name */
b34976b6 306 FALSE, /* partial_inplace */
5bd4f169
AM		 307 0, /* src_mask */
308 0xffff, /* dst_mask */
b34976b6 309 FALSE), /* pcrel_offset */
5bd4f169
AM		 310
311 /* An absolute 16 bit branch; the lower two bits must be zero.
312 FIXME: we don't check that, we just clear them. */
313 HOWTO (R_PPC64_ADDR14, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
5bd4f169
AM		 318 0, /* bitpos */
319 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 320 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 321 "R_PPC64_ADDR14", /* name */
b34976b6 322 FALSE, /* partial_inplace */
d006db6c 323 0, /* src_mask */
f5e87a1d 324 0x0000fffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
5bd4f169
AM		 326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is expected to be taken. The lower two
329 bits must be zero. */
330 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
5bd4f169
AM		 335 0, /* bitpos */
336 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 337 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 338 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 339 FALSE, /* partial_inplace */
d006db6c 340 0, /* src_mask */
f5e87a1d 341 0x0000fffc, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
5bd4f169
AM		 343
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is not expected to be taken. The lower
346 two bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 16, /* bitsize */
b34976b6 351 FALSE, /* pc_relative */
5bd4f169
AM		 352 0, /* bitpos */
353 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 354 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 355 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 356 FALSE, /* partial_inplace */
d006db6c 357 0, /* src_mask */
f5e87a1d 358 0x0000fffc, /* dst_mask */
b34976b6 359 FALSE), /* pcrel_offset */
5bd4f169
AM		 360
361 /* A relative 26 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC64_REL24, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 26, /* bitsize */
b34976b6 366 TRUE, /* pc_relative */
5bd4f169
AM		 367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
2441e016 369 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 370 "R_PPC64_REL24", /* name */
b34976b6 371 FALSE, /* partial_inplace */
d006db6c 372 0, /* src_mask */
f5e87a1d 373 0x03fffffc, /* dst_mask */
b34976b6 374 TRUE), /* pcrel_offset */
5bd4f169
AM		 375
376 /* A relative 16 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL14, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 TRUE, /* pc_relative */
5bd4f169
AM		 382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
2441e016 384 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 385 "R_PPC64_REL14", /* name */
b34976b6 386 FALSE, /* partial_inplace */
d006db6c 387 0, /* src_mask */
f5e87a1d 388 0x0000fffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
5bd4f169
AM		 390
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is expected to be taken. The lower two bits must be
393 zero. */
394 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
b34976b6 398 TRUE, /* pc_relative */
5bd4f169
AM		 399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
805fc799 401 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 402 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 403 FALSE, /* partial_inplace */
d006db6c 404 0, /* src_mask */
f5e87a1d 405 0x0000fffc, /* dst_mask */
b34976b6 406 TRUE), /* pcrel_offset */
5bd4f169
AM		 407
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is not expected to be taken. The lower two bits must
410 be zero. */
411 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
412 0, /* rightshift */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
414 16, /* bitsize */
b34976b6 415 TRUE, /* pc_relative */
5bd4f169
AM		 416 0, /* bitpos */
417 complain_overflow_signed, /* complain_on_overflow */
805fc799 418 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 419 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 420 FALSE, /* partial_inplace */
d006db6c 421 0, /* src_mask */
f5e87a1d 422 0x0000fffc, /* dst_mask */
b34976b6 423 TRUE), /* pcrel_offset */
5bd4f169
AM		 424
425 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
426 symbol. */
427 HOWTO (R_PPC64_GOT16, /* type */
428 0, /* rightshift */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
430 16, /* bitsize */
b34976b6 431 FALSE, /* pc_relative */
5bd4f169
AM		 432 0, /* bitpos */
433 complain_overflow_signed, /* complain_on_overflow */
805fc799 434 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 435 "R_PPC64_GOT16", /* name */
b34976b6 436 FALSE, /* partial_inplace */
5bd4f169
AM		 437 0, /* src_mask */
438 0xffff, /* dst_mask */
b34976b6 439 FALSE), /* pcrel_offset */
5bd4f169
AM		 440
441 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
442 the symbol. */
443 HOWTO (R_PPC64_GOT16_LO, /* type */
444 0, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
b34976b6 447 FALSE, /* pc_relative */
5bd4f169
AM		 448 0, /* bitpos */
449 complain_overflow_dont, /* complain_on_overflow */
805fc799 450 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 451 "R_PPC64_GOT16_LO", /* name */
b34976b6 452 FALSE, /* partial_inplace */
5bd4f169
AM		 453 0, /* src_mask */
454 0xffff, /* dst_mask */
b34976b6 455 FALSE), /* pcrel_offset */
5bd4f169
AM		 456
457 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
458 the symbol. */
459 HOWTO (R_PPC64_GOT16_HI, /* type */
460 16, /* rightshift */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
462 16, /* bitsize */
b34976b6 463 FALSE, /* pc_relative */
5bd4f169
AM		 464 0, /* bitpos */
465 complain_overflow_dont,/* complain_on_overflow */
805fc799 466 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 467 "R_PPC64_GOT16_HI", /* name */
b34976b6 468 FALSE, /* partial_inplace */
5bd4f169
AM		 469 0, /* src_mask */
470 0xffff, /* dst_mask */
b34976b6 471 FALSE), /* pcrel_offset */
5bd4f169
AM		 472
473 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
474 the symbol. */
475 HOWTO (R_PPC64_GOT16_HA, /* type */
476 16, /* rightshift */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
b34976b6 479 FALSE, /* pc_relative */
5bd4f169
AM		 480 0, /* bitpos */
481 complain_overflow_dont,/* complain_on_overflow */
805fc799 482 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 483 "R_PPC64_GOT16_HA", /* name */
b34976b6 484 FALSE, /* partial_inplace */
5bd4f169
AM		 485 0, /* src_mask */
486 0xffff, /* dst_mask */
b34976b6 487 FALSE), /* pcrel_offset */
5bd4f169
AM		 488
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC64_COPY, /* type */
495 0, /* rightshift */
f5e87a1d
AM		 496 0, /* this one is variable size */
497 0, /* bitsize */
b34976b6 498 FALSE, /* pc_relative */
5bd4f169 499 0, /* bitpos */
f5e87a1d
AM		 500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 502 "R_PPC64_COPY", /* name */
b34976b6 503 FALSE, /* partial_inplace */
5bd4f169
AM		 504 0, /* src_mask */
505 0, /* dst_mask */
b34976b6 506 FALSE), /* pcrel_offset */
5bd4f169
AM		 507
508 /* Like R_PPC64_ADDR64, but used when setting global offset table
509 entries. */
510 HOWTO (R_PPC64_GLOB_DAT, /* type */
511 0, /* rightshift */
512 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
513 64, /* bitsize */
b34976b6 514 FALSE, /* pc_relative */
5bd4f169
AM		 515 0, /* bitpos */
516 complain_overflow_dont, /* complain_on_overflow */
805fc799 517 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 518 "R_PPC64_GLOB_DAT", /* name */
b34976b6 519 FALSE, /* partial_inplace */
5bd4f169 520 0, /* src_mask */
f5e87a1d 521 ONES (64), /* dst_mask */
b34976b6 522 FALSE), /* pcrel_offset */
5bd4f169
AM		 523
524 /* Created by the link editor. Marks a procedure linkage table
525 entry for a symbol. */
526 HOWTO (R_PPC64_JMP_SLOT, /* type */
527 0, /* rightshift */
528 0, /* size (0 = byte, 1 = short, 2 = long) */
529 0, /* bitsize */
b34976b6 530 FALSE, /* pc_relative */
5bd4f169
AM		 531 0, /* bitpos */
532 complain_overflow_dont, /* complain_on_overflow */
805fc799 533 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 534 "R_PPC64_JMP_SLOT", /* name */
b34976b6 535 FALSE, /* partial_inplace */
5bd4f169
AM		 536 0, /* src_mask */
537 0, /* dst_mask */
b34976b6 538 FALSE), /* pcrel_offset */
5bd4f169
AM		 539
540 /* Used only by the dynamic linker. When the object is run, this
541 doubleword64 is set to the load address of the object, plus the
542 addend. */
543 HOWTO (R_PPC64_RELATIVE, /* type */
544 0, /* rightshift */
545 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
546 64, /* bitsize */
b34976b6 547 FALSE, /* pc_relative */
5bd4f169
AM		 548 0, /* bitpos */
549 complain_overflow_dont, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC64_RELATIVE", /* name */
b34976b6 552 FALSE, /* partial_inplace */
5bd4f169 553 0, /* src_mask */
f5e87a1d 554 ONES (64), /* dst_mask */
b34976b6 555 FALSE), /* pcrel_offset */
5bd4f169
AM		 556
557 /* Like R_PPC64_ADDR32, but may be unaligned. */
558 HOWTO (R_PPC64_UADDR32, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 32, /* bitsize */
b34976b6 562 FALSE, /* pc_relative */
5bd4f169
AM		 563 0, /* bitpos */
564 complain_overflow_bitfield, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC64_UADDR32", /* name */
b34976b6 567 FALSE, /* partial_inplace */
5bd4f169
AM		 568 0, /* src_mask */
569 0xffffffff, /* dst_mask */
b34976b6 570 FALSE), /* pcrel_offset */
5bd4f169
AM		 571
572 /* Like R_PPC64_ADDR16, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR16, /* type */
574 0, /* rightshift */
575 1, /* size (0 = byte, 1 = short, 2 = long) */
576 16, /* bitsize */
b34976b6 577 FALSE, /* pc_relative */
5bd4f169
AM		 578 0, /* bitpos */
579 complain_overflow_bitfield, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_UADDR16", /* name */
b34976b6 582 FALSE, /* partial_inplace */
5bd4f169
AM		 583 0, /* src_mask */
584 0xffff, /* dst_mask */
b34976b6 585 FALSE), /* pcrel_offset */
5bd4f169
AM		 586
587 /* 32-bit PC relative. */
588 HOWTO (R_PPC64_REL32, /* type */
589 0, /* rightshift */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
591 32, /* bitsize */
b34976b6 592 TRUE, /* pc_relative */
5bd4f169 593 0, /* bitpos */
cedb70c5 594 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 595 complain_overflow_signed, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_REL32", /* name */
b34976b6 598 FALSE, /* partial_inplace */
5bd4f169
AM		 599 0, /* src_mask */
600 0xffffffff, /* dst_mask */
b34976b6 601 TRUE), /* pcrel_offset */
5bd4f169 602
10ed1bba 603 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 604 HOWTO (R_PPC64_PLT32, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
b34976b6 608 FALSE, /* pc_relative */
5bd4f169
AM		 609 0, /* bitpos */
610 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 611 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 612 "R_PPC64_PLT32", /* name */
b34976b6 613 FALSE, /* partial_inplace */
5bd4f169 614 0, /* src_mask */
f5e87a1d 615 0xffffffff, /* dst_mask */
b34976b6 616 FALSE), /* pcrel_offset */
5bd4f169
AM		 617
618 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
619 FIXME: R_PPC64_PLTREL32 not supported. */
620 HOWTO (R_PPC64_PLTREL32, /* type */
621 0, /* rightshift */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
623 32, /* bitsize */
b34976b6 624 TRUE, /* pc_relative */
5bd4f169
AM		 625 0, /* bitpos */
626 complain_overflow_signed, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC64_PLTREL32", /* name */
b34976b6 629 FALSE, /* partial_inplace */
5bd4f169 630 0, /* src_mask */
f5e87a1d 631 0xffffffff, /* dst_mask */
b34976b6 632 TRUE), /* pcrel_offset */
5bd4f169
AM		 633
634 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
635 the symbol. */
636 HOWTO (R_PPC64_PLT16_LO, /* type */
637 0, /* rightshift */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
b34976b6 640 FALSE, /* pc_relative */
5bd4f169
AM		 641 0, /* bitpos */
642 complain_overflow_dont, /* complain_on_overflow */
805fc799 643 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 644 "R_PPC64_PLT16_LO", /* name */
b34976b6 645 FALSE, /* partial_inplace */
5bd4f169
AM		 646 0, /* src_mask */
647 0xffff, /* dst_mask */
b34976b6 648 FALSE), /* pcrel_offset */
5bd4f169
AM		 649
650 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
651 the symbol. */
652 HOWTO (R_PPC64_PLT16_HI, /* type */
653 16, /* rightshift */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
655 16, /* bitsize */
b34976b6 656 FALSE, /* pc_relative */
5bd4f169
AM		 657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
805fc799 659 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 660 "R_PPC64_PLT16_HI", /* name */
b34976b6 661 FALSE, /* partial_inplace */
5bd4f169
AM		 662 0, /* src_mask */
663 0xffff, /* dst_mask */
b34976b6 664 FALSE), /* pcrel_offset */
5bd4f169
AM		 665
666 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
667 the symbol. */
668 HOWTO (R_PPC64_PLT16_HA, /* type */
669 16, /* rightshift */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
671 16, /* bitsize */
b34976b6 672 FALSE, /* pc_relative */
5bd4f169
AM		 673 0, /* bitpos */
674 complain_overflow_dont, /* complain_on_overflow */
805fc799 675 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 676 "R_PPC64_PLT16_HA", /* name */
b34976b6 677 FALSE, /* partial_inplace */
5bd4f169
AM		 678 0, /* src_mask */
679 0xffff, /* dst_mask */
b34976b6 680 FALSE), /* pcrel_offset */
5bd4f169 681
c061c2d8 682 /* 16-bit section relative relocation. */
5bd4f169
AM		 683 HOWTO (R_PPC64_SECTOFF, /* type */
684 0, /* rightshift */
c061c2d8
AM		 685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
b34976b6 687 FALSE, /* pc_relative */
5bd4f169
AM		 688 0, /* bitpos */
689 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 690 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 691 "R_PPC64_SECTOFF", /* name */
b34976b6 692 FALSE, /* partial_inplace */
5bd4f169 693 0, /* src_mask */
c061c2d8 694 0xffff, /* dst_mask */
b34976b6 695 FALSE), /* pcrel_offset */
5bd4f169 696
c061c2d8 697 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 698 HOWTO (R_PPC64_SECTOFF_LO, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
b34976b6 702 FALSE, /* pc_relative */
5bd4f169
AM		 703 0, /* bitpos */
704 complain_overflow_dont, /* complain_on_overflow */
805fc799 705 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 706 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 707 FALSE, /* partial_inplace */
5bd4f169
AM		 708 0, /* src_mask */
709 0xffff, /* dst_mask */
b34976b6 710 FALSE), /* pcrel_offset */
5bd4f169
AM		 711
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC64_SECTOFF_HI, /* type */
714 16, /* rightshift */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
b34976b6 717 FALSE, /* pc_relative */
5bd4f169
AM		 718 0, /* bitpos */
719 complain_overflow_dont, /* complain_on_overflow */
805fc799 720 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 721 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 722 FALSE, /* partial_inplace */
5bd4f169
AM		 723 0, /* src_mask */
724 0xffff, /* dst_mask */
b34976b6 725 FALSE), /* pcrel_offset */
5bd4f169
AM		 726
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HA, /* type */
729 16, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
b34976b6 732 FALSE, /* pc_relative */
5bd4f169
AM		 733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
805fc799 735 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 736 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 737 FALSE, /* partial_inplace */
5bd4f169
AM		 738 0, /* src_mask */
739 0xffff, /* dst_mask */
b34976b6 740 FALSE), /* pcrel_offset */
5bd4f169 741
04c9666a
AM		 742 /* Like R_PPC64_REL24 without touching the two least significant bits. */
743 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 744 2, /* rightshift */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
746 30, /* bitsize */
b34976b6 747 TRUE, /* pc_relative */
5bd4f169
AM		 748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
04c9666a 751 "R_PPC64_REL30", /* name */
b34976b6 752 FALSE, /* partial_inplace */
d006db6c 753 0, /* src_mask */
5bd4f169 754 0xfffffffc, /* dst_mask */
b34976b6 755 TRUE), /* pcrel_offset */
5bd4f169
AM		 756
757 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
758
759 /* A standard 64-bit relocation. */
760 HOWTO (R_PPC64_ADDR64, /* type */
761 0, /* rightshift */
762 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
763 64, /* bitsize */
b34976b6 764 FALSE, /* pc_relative */
5bd4f169
AM		 765 0, /* bitpos */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR64", /* name */
b34976b6 769 FALSE, /* partial_inplace */
5bd4f169 770 0, /* src_mask */
f5e87a1d 771 ONES (64), /* dst_mask */
b34976b6 772 FALSE), /* pcrel_offset */
5bd4f169
AM		 773
774 /* The bits 32-47 of an address. */
775 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
776 32, /* rightshift */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
778 16, /* bitsize */
b34976b6 779 FALSE, /* pc_relative */
5bd4f169
AM		 780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 784 FALSE, /* partial_inplace */
5bd4f169
AM		 785 0, /* src_mask */
786 0xffff, /* dst_mask */
b34976b6 787 FALSE), /* pcrel_offset */
5bd4f169
AM		 788
789 /* The bits 32-47 of an address, plus 1 if the contents of the low
790 16 bits, treated as a signed number, is negative. */
791 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
792 32, /* rightshift */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
b34976b6 795 FALSE, /* pc_relative */
5bd4f169
AM		 796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
805fc799 798 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 799 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 800 FALSE, /* partial_inplace */
5bd4f169
AM		 801 0, /* src_mask */
802 0xffff, /* dst_mask */
b34976b6 803 FALSE), /* pcrel_offset */
5bd4f169
AM		 804
805 /* The bits 48-63 of an address. */
806 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
807 48, /* rightshift */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
b34976b6 810 FALSE, /* pc_relative */
5bd4f169
AM		 811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 815 FALSE, /* partial_inplace */
5bd4f169
AM		 816 0, /* src_mask */
817 0xffff, /* dst_mask */
b34976b6 818 FALSE), /* pcrel_offset */
5bd4f169
AM		 819
820 /* The bits 48-63 of an address, plus 1 if the contents of the low
821 16 bits, treated as a signed number, is negative. */
822 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
823 48, /* rightshift */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
825 16, /* bitsize */
b34976b6 826 FALSE, /* pc_relative */
5bd4f169
AM		 827 0, /* bitpos */
828 complain_overflow_dont, /* complain_on_overflow */
805fc799 829 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 830 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 831 FALSE, /* partial_inplace */
5bd4f169
AM		 832 0, /* src_mask */
833 0xffff, /* dst_mask */
b34976b6 834 FALSE), /* pcrel_offset */
5bd4f169
AM		 835
836 /* Like ADDR64, but may be unaligned. */
837 HOWTO (R_PPC64_UADDR64, /* type */
838 0, /* rightshift */
839 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
840 64, /* bitsize */
b34976b6 841 FALSE, /* pc_relative */
5bd4f169
AM		 842 0, /* bitpos */
843 complain_overflow_dont, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_PPC64_UADDR64", /* name */
b34976b6 846 FALSE, /* partial_inplace */
5bd4f169 847 0, /* src_mask */
f5e87a1d 848 ONES (64), /* dst_mask */
b34976b6 849 FALSE), /* pcrel_offset */
5bd4f169
AM		 850
851 /* 64-bit relative relocation. */
852 HOWTO (R_PPC64_REL64, /* type */
853 0, /* rightshift */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 64, /* bitsize */
b34976b6 856 TRUE, /* pc_relative */
5bd4f169
AM		 857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 "R_PPC64_REL64", /* name */
b34976b6 861 FALSE, /* partial_inplace */
5bd4f169 862 0, /* src_mask */
f5e87a1d 863 ONES (64), /* dst_mask */
b34976b6 864 TRUE), /* pcrel_offset */
5bd4f169 865
cedb70c5 866 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 867 HOWTO (R_PPC64_PLT64, /* type */
868 0, /* rightshift */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 64, /* bitsize */
b34976b6 871 FALSE, /* pc_relative */
5bd4f169
AM		 872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
805fc799 874 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 875 "R_PPC64_PLT64", /* name */
b34976b6 876 FALSE, /* partial_inplace */
5bd4f169 877 0, /* src_mask */
f5e87a1d 878 ONES (64), /* dst_mask */
b34976b6 879 FALSE), /* pcrel_offset */
5bd4f169
AM		 880
881 /* 64-bit PC relative relocation to the symbol's procedure linkage
882 table. */
883 /* FIXME: R_PPC64_PLTREL64 not supported. */
884 HOWTO (R_PPC64_PLTREL64, /* type */
885 0, /* rightshift */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 64, /* bitsize */
b34976b6 888 TRUE, /* pc_relative */
5bd4f169
AM		 889 0, /* bitpos */
890 complain_overflow_dont, /* complain_on_overflow */
805fc799 891 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 892 "R_PPC64_PLTREL64", /* name */
b34976b6 893 FALSE, /* partial_inplace */
5bd4f169 894 0, /* src_mask */
f5e87a1d 895 ONES (64), /* dst_mask */
b34976b6 896 TRUE), /* pcrel_offset */
5bd4f169
AM		 897
898 /* 16 bit TOC-relative relocation. */
899
900 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
901 HOWTO (R_PPC64_TOC16, /* type */
902 0, /* rightshift */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
904 16, /* bitsize */
b34976b6 905 FALSE, /* pc_relative */
5bd4f169
AM		 906 0, /* bitpos */
907 complain_overflow_signed, /* complain_on_overflow */
805fc799 908 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 909 "R_PPC64_TOC16", /* name */
b34976b6 910 FALSE, /* partial_inplace */
5bd4f169
AM		 911 0, /* src_mask */
912 0xffff, /* dst_mask */
b34976b6 913 FALSE), /* pcrel_offset */
5bd4f169
AM		 914
915 /* 16 bit TOC-relative relocation without overflow. */
916
917 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
918 HOWTO (R_PPC64_TOC16_LO, /* type */
919 0, /* rightshift */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
921 16, /* bitsize */
b34976b6 922 FALSE, /* pc_relative */
5bd4f169
AM		 923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
805fc799 925 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 926 "R_PPC64_TOC16_LO", /* name */
b34976b6 927 FALSE, /* partial_inplace */
5bd4f169
AM		 928 0, /* src_mask */
929 0xffff, /* dst_mask */
b34976b6 930 FALSE), /* pcrel_offset */
5bd4f169
AM		 931
932 /* 16 bit TOC-relative relocation, high 16 bits. */
933
934 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_HI, /* type */
936 16, /* rightshift */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
938 16, /* bitsize */
b34976b6 939 FALSE, /* pc_relative */
5bd4f169
AM		 940 0, /* bitpos */
941 complain_overflow_dont, /* complain_on_overflow */
805fc799 942 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 943 "R_PPC64_TOC16_HI", /* name */
b34976b6 944 FALSE, /* partial_inplace */
5bd4f169
AM		 945 0, /* src_mask */
946 0xffff, /* dst_mask */
b34976b6 947 FALSE), /* pcrel_offset */
5bd4f169
AM		 948
949 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
950 contents of the low 16 bits, treated as a signed number, is
951 negative. */
952
953 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
954 HOWTO (R_PPC64_TOC16_HA, /* type */
955 16, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
b34976b6 958 FALSE, /* pc_relative */
5bd4f169
AM		 959 0, /* bitpos */
960 complain_overflow_dont, /* complain_on_overflow */
805fc799 961 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 962 "R_PPC64_TOC16_HA", /* name */
b34976b6 963 FALSE, /* partial_inplace */
5bd4f169
AM		 964 0, /* src_mask */
965 0xffff, /* dst_mask */
b34976b6 966 FALSE), /* pcrel_offset */
5bd4f169
AM		 967
968 /* 64-bit relocation; insert value of TOC base (.TOC.). */
969
970 /* R_PPC64_TOC 51 doubleword64 .TOC. */
971 HOWTO (R_PPC64_TOC, /* type */
972 0, /* rightshift */
973 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
974 64, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
5bd4f169
AM		 976 0, /* bitpos */
977 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 978 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 979 "R_PPC64_TOC", /* name */
b34976b6 980 FALSE, /* partial_inplace */
5bd4f169 981 0, /* src_mask */
f5e87a1d 982 ONES (64), /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
5bd4f169
AM		 984
985 /* Like R_PPC64_GOT16, but also informs the link editor that the
986 value to relocate may (!) refer to a PLT entry which the link
987 editor (a) may replace with the symbol value. If the link editor
988 is unable to fully resolve the symbol, it may (b) create a PLT
989 entry and store the address to the new PLT entry in the GOT.
990 This permits lazy resolution of function symbols at run time.
991 The link editor may also skip all of this and just (c) emit a
992 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
993 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
994 HOWTO (R_PPC64_PLTGOT16, /* type */
995 0, /* rightshift */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
997 16, /* bitsize */
b34976b6 998 FALSE, /* pc_relative */
5bd4f169
AM		 999 0, /* bitpos */
1000 complain_overflow_signed, /* complain_on_overflow */
805fc799 1001 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1002 "R_PPC64_PLTGOT16", /* name */
1003 FALSE, /* partial_inplace */
1004 0, /* src_mask */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1007
1008 /* Like R_PPC64_PLTGOT16, but without overflow. */
1009 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1011 0, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 16, /* bitsize */
1014 FALSE, /* pc_relative */
1015 0, /* bitpos */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_LO", /* name */
1019 FALSE, /* partial_inplace */
1020 0, /* src_mask */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1023
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1025 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_HI", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1041 1 if the contents of the low 16 bits, treated as a signed number,
1042 is negative. */
1043 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1044 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 16, /* bitsize */
1048 FALSE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 ppc64_elf_unhandled_reloc, /* special_function */
1052 "R_PPC64_PLTGOT16_HA", /* name */
1053 FALSE, /* partial_inplace */
1054 0, /* src_mask */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1057
1058 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1059 HOWTO (R_PPC64_ADDR16_DS, /* type */
1060 0, /* rightshift */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 16, /* bitsize */
1063 FALSE, /* pc_relative */
1064 0, /* bitpos */
1065 complain_overflow_bitfield, /* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_PPC64_ADDR16_DS", /* name */
1068 FALSE, /* partial_inplace */
1069 0, /* src_mask */
1070 0xfffc, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1072
1073 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1075 0, /* rightshift */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 16, /* bitsize */
1078 FALSE, /* pc_relative */
1079 0, /* bitpos */
1080 complain_overflow_dont,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_PPC64_ADDR16_LO_DS",/* name */
1083 FALSE, /* partial_inplace */
1084 0, /* src_mask */
1085 0xfffc, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1087
1088 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_GOT16_DS, /* type */
1090 0, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 16, /* bitsize */
1093 FALSE, /* pc_relative */
1094 0, /* bitpos */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_GOT16_DS", /* name */
1098 FALSE, /* partial_inplace */
1099 0, /* src_mask */
1100 0xfffc, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1102
1103 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1105 0, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 16, /* bitsize */
1108 FALSE, /* pc_relative */
1109 0, /* bitpos */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc, /* special_function */
1112 "R_PPC64_GOT16_LO_DS", /* name */
1113 FALSE, /* partial_inplace */
1114 0, /* src_mask */
1115 0xfffc, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1117
1118 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1120 0, /* rightshift */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 16, /* bitsize */
1123 FALSE, /* pc_relative */
1124 0, /* bitpos */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc, /* special_function */
1127 "R_PPC64_PLT16_LO_DS", /* name */
1128 FALSE, /* partial_inplace */
1129 0, /* src_mask */
1130 0xfffc, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1132
1133 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1135 0, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 16, /* bitsize */
1138 FALSE, /* pc_relative */
1139 0, /* bitpos */
1140 complain_overflow_bitfield, /* complain_on_overflow */
1141 ppc64_elf_sectoff_reloc, /* special_function */
1142 "R_PPC64_SECTOFF_DS", /* name */
1143 FALSE, /* partial_inplace */
1144 0, /* src_mask */
1145 0xfffc, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1147
1148 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1150 0, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 16, /* bitsize */
1153 FALSE, /* pc_relative */
1154 0, /* bitpos */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc, /* special_function */
1157 "R_PPC64_SECTOFF_LO_DS",/* name */
1158 FALSE, /* partial_inplace */
1159 0, /* src_mask */
1160 0xfffc, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1162
1163 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_TOC16_DS, /* type */
1165 0, /* rightshift */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 16, /* bitsize */
1168 FALSE, /* pc_relative */
1169 0, /* bitpos */
1170 complain_overflow_signed, /* complain_on_overflow */
1171 ppc64_elf_toc_reloc, /* special_function */
1172 "R_PPC64_TOC16_DS", /* name */
1173 FALSE, /* partial_inplace */
1174 0, /* src_mask */
1175 0xfffc, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1177
1178 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1180 0, /* rightshift */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 16, /* bitsize */
1183 FALSE, /* pc_relative */
1184 0, /* bitpos */
1185 complain_overflow_dont, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc, /* special_function */
1187 "R_PPC64_TOC16_LO_DS", /* name */
1188 FALSE, /* partial_inplace */
1189 0, /* src_mask */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1192
1193 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1196 0, /* rightshift */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 16, /* bitsize */
1199 FALSE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_signed, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_DS", /* name */
1204 FALSE, /* partial_inplace */
1205 0, /* src_mask */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1208
1209 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1212 0, /* rightshift */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 16, /* bitsize */
1215 FALSE, /* pc_relative */
1216 0, /* bitpos */
1217 complain_overflow_dont, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_LO_DS",/* name */
1220 FALSE, /* partial_inplace */
1221 0, /* src_mask */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1224
1225 /* Marker reloc for TLS. */
1226 HOWTO (R_PPC64_TLS,
1227 0, /* rightshift */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 32, /* bitsize */
1230 FALSE, /* pc_relative */
1231 0, /* bitpos */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC64_TLS", /* name */
1235 FALSE, /* partial_inplace */
1236 0, /* src_mask */
1237 0, /* dst_mask */
1238 FALSE), /* pcrel_offset */
1239
1240 /* Computes the load module index of the load module that contains the
1241 definition of its TLS sym. */
1242 HOWTO (R_PPC64_DTPMOD64,
1243 0, /* rightshift */
1244 4, /* size (0 = byte, 1 = short, 2 = long) */
1245 64, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_unhandled_reloc, /* special_function */
1250 "R_PPC64_DTPMOD64", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 ONES (64), /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
1256 /* Computes a dtv-relative displacement, the difference between the value
1257 of sym+add and the base address of the thread-local storage block that
1258 contains the definition of sym, minus 0x8000. */
1259 HOWTO (R_PPC64_DTPREL64,
1260 0, /* rightshift */
1261 4, /* size (0 = byte, 1 = short, 2 = long) */
1262 64, /* bitsize */
1263 FALSE, /* pc_relative */
1264 0, /* bitpos */
1265 complain_overflow_dont, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc, /* special_function */
1267 "R_PPC64_DTPREL64", /* name */
1268 FALSE, /* partial_inplace */
1269 0, /* src_mask */
1270 ONES (64), /* dst_mask */
1271 FALSE), /* pcrel_offset */
1272
1273 /* A 16 bit dtprel reloc. */
1274 HOWTO (R_PPC64_DTPREL16,
1275 0, /* rightshift */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 16, /* bitsize */
1278 FALSE, /* pc_relative */
1279 0, /* bitpos */
1280 complain_overflow_signed, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_DTPREL16", /* name */
1283 FALSE, /* partial_inplace */
1284 0, /* src_mask */
1285 0xffff, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1287
1288 /* Like DTPREL16, but no overflow. */
1289 HOWTO (R_PPC64_DTPREL16_LO,
1290 0, /* rightshift */
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 16, /* bitsize */
1293 FALSE, /* pc_relative */
1294 0, /* bitpos */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 ppc64_elf_unhandled_reloc, /* special_function */
1297 "R_PPC64_DTPREL16_LO", /* name */
1298 FALSE, /* partial_inplace */
1299 0, /* src_mask */
1300 0xffff, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1302
1303 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1304 HOWTO (R_PPC64_DTPREL16_HI,
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 16, /* bitsize */
1308 FALSE, /* pc_relative */
1309 0, /* bitpos */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc64_elf_unhandled_reloc, /* special_function */
1312 "R_PPC64_DTPREL16_HI", /* name */
1313 FALSE, /* partial_inplace */
1314 0, /* src_mask */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1317
1318 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1319 HOWTO (R_PPC64_DTPREL16_HA,
1320 16, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 16, /* bitsize */
1323 FALSE, /* pc_relative */
1324 0, /* bitpos */
1325 complain_overflow_dont, /* complain_on_overflow */
1326 ppc64_elf_unhandled_reloc, /* special_function */
1327 "R_PPC64_DTPREL16_HA", /* name */
1328 FALSE, /* partial_inplace */
1329 0, /* src_mask */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1332
1333 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1334 HOWTO (R_PPC64_DTPREL16_HIGHER,
1335 32, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 16, /* bitsize */
1338 FALSE, /* pc_relative */
1339 0, /* bitpos */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc64_elf_unhandled_reloc, /* special_function */
1342 "R_PPC64_DTPREL16_HIGHER", /* name */
1343 FALSE, /* partial_inplace */
1344 0, /* src_mask */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1347
1348 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1349 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1350 32, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 16, /* bitsize */
1353 FALSE, /* pc_relative */
1354 0, /* bitpos */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 ppc64_elf_unhandled_reloc, /* special_function */
1357 "R_PPC64_DTPREL16_HIGHERA", /* name */
1358 FALSE, /* partial_inplace */
1359 0, /* src_mask */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1362
1363 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1364 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1365 48, /* rightshift */
1366 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL16_HIGHEST", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1379 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1380 48, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 16, /* bitsize */
1383 FALSE, /* pc_relative */
1384 0, /* bitpos */
1385 complain_overflow_dont, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1388 FALSE, /* partial_inplace */
1389 0, /* src_mask */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1392
1393 /* Like DTPREL16, but for insns with a DS field. */
1394 HOWTO (R_PPC64_DTPREL16_DS,
1395 0, /* rightshift */
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 16, /* bitsize */
1398 FALSE, /* pc_relative */
1399 0, /* bitpos */
1400 complain_overflow_signed, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_DS", /* name */
1403 FALSE, /* partial_inplace */
1404 0, /* src_mask */
1405 0xfffc, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1407
1408 /* Like DTPREL16_DS, but no overflow. */
1409 HOWTO (R_PPC64_DTPREL16_LO_DS,
1410 0, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 16, /* bitsize */
1413 FALSE, /* pc_relative */
1414 0, /* bitpos */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_LO_DS", /* name */
1418 FALSE, /* partial_inplace */
1419 0, /* src_mask */
1420 0xfffc, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1422
1423 /* Computes a tp-relative displacement, the difference between the value of
1424 sym+add and the value of the thread pointer (r13). */
1425 HOWTO (R_PPC64_TPREL64,
1426 0, /* rightshift */
1427 4, /* size (0 = byte, 1 = short, 2 = long) */
1428 64, /* bitsize */
1429 FALSE, /* pc_relative */
1430 0, /* bitpos */
1431 complain_overflow_dont, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc, /* special_function */
1433 "R_PPC64_TPREL64", /* name */
1434 FALSE, /* partial_inplace */
1435 0, /* src_mask */
1436 ONES (64), /* dst_mask */
1437 FALSE), /* pcrel_offset */
1438
1439 /* A 16 bit tprel reloc. */
1440 HOWTO (R_PPC64_TPREL16,
1441 0, /* rightshift */
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 16, /* bitsize */
1444 FALSE, /* pc_relative */
1445 0, /* bitpos */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc, /* special_function */
1448 "R_PPC64_TPREL16", /* name */
1449 FALSE, /* partial_inplace */
1450 0, /* src_mask */
1451 0xffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1453
1454 /* Like TPREL16, but no overflow. */
1455 HOWTO (R_PPC64_TPREL16_LO,
1456 0, /* rightshift */
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 16, /* bitsize */
1459 FALSE, /* pc_relative */
1460 0, /* bitpos */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc, /* special_function */
1463 "R_PPC64_TPREL16_LO", /* name */
1464 FALSE, /* partial_inplace */
1465 0, /* src_mask */
1466 0xffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1468
1469 /* Like TPREL16_LO, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_TPREL16_HI,
1471 16, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 16, /* bitsize */
1474 FALSE, /* pc_relative */
1475 0, /* bitpos */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc, /* special_function */
1478 "R_PPC64_TPREL16_HI", /* name */
1479 FALSE, /* partial_inplace */
1480 0, /* src_mask */
1481 0xffff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1483
1484 /* Like TPREL16_HI, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_TPREL16_HA,
1486 16, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 16, /* bitsize */
1489 FALSE, /* pc_relative */
1490 0, /* bitpos */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc, /* special_function */
1493 "R_PPC64_TPREL16_HA", /* name */
1494 FALSE, /* partial_inplace */
1495 0, /* src_mask */
1496 0xffff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1498
1499 /* Like TPREL16_HI, but next higher group of 16 bits. */
1500 HOWTO (R_PPC64_TPREL16_HIGHER,
1501 32, /* rightshift */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 16, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc, /* special_function */
1508 "R_PPC64_TPREL16_HIGHER", /* name */
1509 FALSE, /* partial_inplace */
1510 0, /* src_mask */
1511 0xffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1513
1514 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1515 HOWTO (R_PPC64_TPREL16_HIGHERA,
1516 32, /* rightshift */
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 16, /* bitsize */
1519 FALSE, /* pc_relative */
1520 0, /* bitpos */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc, /* special_function */
1523 "R_PPC64_TPREL16_HIGHERA", /* name */
1524 FALSE, /* partial_inplace */
1525 0, /* src_mask */
1526 0xffff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1528
1529 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1530 HOWTO (R_PPC64_TPREL16_HIGHEST,
1531 48, /* rightshift */
1532 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 16, /* bitsize */
1534 FALSE, /* pc_relative */
1535 0, /* bitpos */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL16_HIGHEST", /* name */
1539 FALSE, /* partial_inplace */
1540 0, /* src_mask */
1541 0xffff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1543
1544 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1545 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1546 48, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 16, /* bitsize */
1549 FALSE, /* pc_relative */
1550 0, /* bitpos */
1551 complain_overflow_dont, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16_HIGHESTA", /* name */
1554 FALSE, /* partial_inplace */
1555 0, /* src_mask */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1558
1559 /* Like TPREL16, but for insns with a DS field. */
1560 HOWTO (R_PPC64_TPREL16_DS,
1561 0, /* rightshift */
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 16, /* bitsize */
1564 FALSE, /* pc_relative */
1565 0, /* bitpos */
1566 complain_overflow_signed, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_DS", /* name */
1569 FALSE, /* partial_inplace */
1570 0, /* src_mask */
1571 0xfffc, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1573
1574 /* Like TPREL16_DS, but no overflow. */
1575 HOWTO (R_PPC64_TPREL16_LO_DS,
1576 0, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 16, /* bitsize */
1579 FALSE, /* pc_relative */
1580 0, /* bitpos */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_LO_DS", /* name */
1584 FALSE, /* partial_inplace */
1585 0, /* src_mask */
1586 0xfffc, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1588
1589 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1590 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1591 to the first entry relative to the TOC base (r2). */
1592 HOWTO (R_PPC64_GOT_TLSGD16,
1593 0, /* rightshift */
1594 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 16, /* bitsize */
1596 FALSE, /* pc_relative */
1597 0, /* bitpos */
1598 complain_overflow_signed, /* complain_on_overflow */
1599 ppc64_elf_unhandled_reloc, /* special_function */
1600 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1601 FALSE, /* partial_inplace */
5bd4f169
AM		 1602 0, /* src_mask */
1603 0xffff, /* dst_mask */
b34976b6 1604 FALSE), /* pcrel_offset */
5bd4f169 1605
411e1bfb
AM		 1606 /* Like GOT_TLSGD16, but no overflow. */
1607 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1608 0, /* rightshift */
1609 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 16, /* bitsize */
b34976b6 1611 FALSE, /* pc_relative */
5bd4f169
AM		 1612 0, /* bitpos */
1613 complain_overflow_dont, /* complain_on_overflow */
805fc799 1614 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1615 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1616 FALSE, /* partial_inplace */
5bd4f169
AM		 1617 0, /* src_mask */
1618 0xffff, /* dst_mask */
b34976b6 1619 FALSE), /* pcrel_offset */
5bd4f169 1620
411e1bfb
AM		 1621 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1622 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1623 16, /* rightshift */
1624 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 16, /* bitsize */
b34976b6 1626 FALSE, /* pc_relative */
5bd4f169
AM		 1627 0, /* bitpos */
1628 complain_overflow_dont, /* complain_on_overflow */
805fc799 1629 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1630 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1631 FALSE, /* partial_inplace */
5bd4f169
AM		 1632 0, /* src_mask */
1633 0xffff, /* dst_mask */
b34976b6 1634 FALSE), /* pcrel_offset */
5bd4f169 1635
411e1bfb
AM		 1636 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1637 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1638 16, /* rightshift */
1639 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 16, /* bitsize */
b34976b6 1641 FALSE, /* pc_relative */
5bd4f169 1642 0, /* bitpos */
411e1bfb 1643 complain_overflow_dont, /* complain_on_overflow */
805fc799 1644 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1645 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1646 FALSE, /* partial_inplace */
5bd4f169
AM		 1647 0, /* src_mask */
1648 0xffff, /* dst_mask */
b34976b6 1649 FALSE), /* pcrel_offset */
5bd4f169 1650
411e1bfb
AM		 1651 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1652 with values (sym+add)@dtpmod and zero, and computes the offset to the
1653 first entry relative to the TOC base (r2). */
1654 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1655 0, /* rightshift */
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 16, /* bitsize */
b34976b6 1658 FALSE, /* pc_relative */
5bd4f169 1659 0, /* bitpos */
411e1bfb
AM		 1660 complain_overflow_signed, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc, /* special_function */
1662 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1663 FALSE, /* partial_inplace */
d006db6c 1664 0, /* src_mask */
411e1bfb 1665 0xffff, /* dst_mask */
b34976b6 1666 FALSE), /* pcrel_offset */
5bd4f169 1667
411e1bfb
AM		 1668 /* Like GOT_TLSLD16, but no overflow. */
1669 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1670 0, /* rightshift */
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1672 16, /* bitsize */
b34976b6 1673 FALSE, /* pc_relative */
5bd4f169 1674 0, /* bitpos */
411e1bfb
AM		 1675 complain_overflow_dont, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc, /* special_function */
1677 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1678 FALSE, /* partial_inplace */
d006db6c 1679 0, /* src_mask */
411e1bfb 1680 0xffff, /* dst_mask */
b34976b6 1681 FALSE), /* pcrel_offset */
5bd4f169 1682
411e1bfb
AM		 1683 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1684 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1685 16, /* rightshift */
5bd4f169
AM		 1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 16, /* bitsize */
b34976b6 1688 FALSE, /* pc_relative */
5bd4f169 1689 0, /* bitpos */
411e1bfb 1690 complain_overflow_dont, /* complain_on_overflow */
805fc799 1691 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1692 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1693 FALSE, /* partial_inplace */
d006db6c 1694 0, /* src_mask */
411e1bfb 1695 0xffff, /* dst_mask */
b34976b6 1696 FALSE), /* pcrel_offset */
5bd4f169 1697
411e1bfb
AM		 1698 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1699 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1700 16, /* rightshift */
5bd4f169
AM		 1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 16, /* bitsize */
b34976b6 1703 FALSE, /* pc_relative */
5bd4f169
AM		 1704 0, /* bitpos */
1705 complain_overflow_dont, /* complain_on_overflow */
805fc799 1706 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1707 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1708 FALSE, /* partial_inplace */
d006db6c 1709 0, /* src_mask */
411e1bfb 1710 0xffff, /* dst_mask */
b34976b6 1711 FALSE), /* pcrel_offset */
5bd4f169 1712
411e1bfb
AM		 1713 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1714 the offset to the entry relative to the TOC base (r2). */
1715 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1716 0, /* rightshift */
1717 1, /* size (0 = byte, 1 = short, 2 = long) */
1718 16, /* bitsize */
b34976b6 1719 FALSE, /* pc_relative */
5bd4f169 1720 0, /* bitpos */
411e1bfb 1721 complain_overflow_signed, /* complain_on_overflow */
805fc799 1722 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1723 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1724 FALSE, /* partial_inplace */
d006db6c 1725 0, /* src_mask */
5bd4f169 1726 0xfffc, /* dst_mask */
b34976b6 1727 FALSE), /* pcrel_offset */
5bd4f169 1728
411e1bfb
AM		 1729 /* Like GOT_DTPREL16_DS, but no overflow. */
1730 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1731 0, /* rightshift */
c061c2d8
AM		 1732 1, /* size (0 = byte, 1 = short, 2 = long) */
1733 16, /* bitsize */
b34976b6 1734 FALSE, /* pc_relative */
5bd4f169 1735 0, /* bitpos */
411e1bfb
AM		 1736 complain_overflow_dont, /* complain_on_overflow */
1737 ppc64_elf_unhandled_reloc, /* special_function */
1738 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1739 FALSE, /* partial_inplace */
d006db6c 1740 0, /* src_mask */
c061c2d8 1741 0xfffc, /* dst_mask */
b34976b6 1742 FALSE), /* pcrel_offset */
5bd4f169 1743
411e1bfb
AM		 1744 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1745 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1746 16, /* rightshift */
5bd4f169
AM		 1747 1, /* size (0 = byte, 1 = short, 2 = long) */
1748 16, /* bitsize */
b34976b6 1749 FALSE, /* pc_relative */
5bd4f169
AM		 1750 0, /* bitpos */
1751 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1752 ppc64_elf_unhandled_reloc, /* special_function */
1753 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1754 FALSE, /* partial_inplace */
d006db6c 1755 0, /* src_mask */
411e1bfb 1756 0xffff, /* dst_mask */
b34976b6 1757 FALSE), /* pcrel_offset */
5bd4f169 1758
411e1bfb
AM		 1759 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1760 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1761 16, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 16, /* bitsize */
1764 FALSE, /* pc_relative */
1765 0, /* bitpos */
1766 complain_overflow_dont, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_DTPREL16_HA", /* name */
1769 FALSE, /* partial_inplace */
1770 0, /* src_mask */
1771 0xffff, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1773
1774 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1775 offset to the entry relative to the TOC base (r2). */
1776 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1777 0, /* rightshift */
1778 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 16, /* bitsize */
b34976b6 1780 FALSE, /* pc_relative */
5bd4f169
AM		 1781 0, /* bitpos */
1782 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1783 ppc64_elf_unhandled_reloc, /* special_function */
1784 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1785 FALSE, /* partial_inplace */
d006db6c 1786 0, /* src_mask */
ad8e1ba5 1787 0xfffc, /* dst_mask */
b34976b6 1788 FALSE), /* pcrel_offset */
5bd4f169 1789
411e1bfb
AM		 1790 /* Like GOT_TPREL16_DS, but no overflow. */
1791 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1792 0, /* rightshift */
1793 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 16, /* bitsize */
b34976b6 1795 FALSE, /* pc_relative */
5bd4f169
AM		 1796 0, /* bitpos */
1797 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1798 ppc64_elf_unhandled_reloc, /* special_function */
1799 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1800 FALSE, /* partial_inplace */
d006db6c 1801 0, /* src_mask */
ad8e1ba5 1802 0xfffc, /* dst_mask */
b34976b6 1803 FALSE), /* pcrel_offset */
5bd4f169 1804
411e1bfb
AM		 1805 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1806 HOWTO (R_PPC64_GOT_TPREL16_HI,
1807 16, /* rightshift */
5bd4f169
AM		 1808 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 16, /* bitsize */
b34976b6 1810 FALSE, /* pc_relative */
5bd4f169 1811 0, /* bitpos */
411e1bfb 1812 complain_overflow_dont, /* complain_on_overflow */
805fc799 1813 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1814 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1815 FALSE, /* partial_inplace */
d006db6c 1816 0, /* src_mask */
411e1bfb 1817 0xffff, /* dst_mask */
b34976b6 1818 FALSE), /* pcrel_offset */
5bd4f169 1819
411e1bfb
AM		 1820 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1821 HOWTO (R_PPC64_GOT_TPREL16_HA,
1822 16, /* rightshift */
5bd4f169
AM		 1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 16, /* bitsize */
b34976b6 1825 FALSE, /* pc_relative */
5bd4f169
AM		 1826 0, /* bitpos */
1827 complain_overflow_dont, /* complain_on_overflow */
805fc799 1828 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1829 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1830 FALSE, /* partial_inplace */
d006db6c 1831 0, /* src_mask */
411e1bfb 1832 0xffff, /* dst_mask */
b34976b6 1833 FALSE), /* pcrel_offset */
5bd4f169
AM		 1834
1835 /* GNU extension to record C++ vtable hierarchy. */
1836 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1837 0, /* rightshift */
1838 0, /* size (0 = byte, 1 = short, 2 = long) */
1839 0, /* bitsize */
b34976b6 1840 FALSE, /* pc_relative */
5bd4f169
AM		 1841 0, /* bitpos */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 NULL, /* special_function */
1844 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1845 FALSE, /* partial_inplace */
5bd4f169
AM		 1846 0, /* src_mask */
1847 0, /* dst_mask */
b34976b6 1848 FALSE), /* pcrel_offset */
5bd4f169
AM		 1849
1850 /* GNU extension to record C++ vtable member usage. */
1851 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1852 0, /* rightshift */
1853 0, /* size (0 = byte, 1 = short, 2 = long) */
1854 0, /* bitsize */
b34976b6 1855 FALSE, /* pc_relative */
5bd4f169
AM		 1856 0, /* bitpos */
1857 complain_overflow_dont, /* complain_on_overflow */
1858 NULL, /* special_function */
1859 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1860 FALSE, /* partial_inplace */
5bd4f169
AM		 1861 0, /* src_mask */
1862 0, /* dst_mask */
b34976b6 1863 FALSE), /* pcrel_offset */
5bd4f169
AM		 1864};
1865
1866\f
1867/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1868 be done. */
1869
1870static void
4ce794b7 1871ppc_howto_init (void)
5bd4f169
AM		 1872{
1873 unsigned int i, type;
1874
1875 for (i = 0;
1876 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1877 i++)
1878 {
1879 type = ppc64_elf_howto_raw[i].type;
1880 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1881 / sizeof (ppc64_elf_howto_table[0])));
1882 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1883 }
1884}
1885
1886static reloc_howto_type *
4ce794b7
AM		 1887ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1888 bfd_reloc_code_real_type code)
5bd4f169 1889{
411e1bfb 1890 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 1891
1892 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1893 /* Initialize howto table if needed. */
1894 ppc_howto_init ();
1895
4ce794b7 1896 switch (code)
5bd4f169
AM		 1897 {
1898 default:
4ce794b7 1899 return NULL;
5bd4f169 1900
411e1bfb
AM		 1901 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1902 break;
1903 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1904 break;
1905 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1906 break;
1907 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1908 break;
1909 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1910 break;
1911 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1912 break;
1913 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1914 break;
411e1bfb 1915 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1916 break;
411e1bfb 1917 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1918 break;
411e1bfb 1919 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1920 break;
411e1bfb 1921 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1922 break;
411e1bfb 1923 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1924 break;
411e1bfb 1925 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1926 break;
411e1bfb 1927 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1928 break;
411e1bfb 1929 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1930 break;
411e1bfb 1931 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1932 break;
411e1bfb 1933 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1934 break;
411e1bfb 1935 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1936 break;
411e1bfb 1937 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1938 break;
411e1bfb 1939 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1940 break;
411e1bfb 1941 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1942 break;
411e1bfb 1943 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1944 break;
411e1bfb 1945 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1946 break;
411e1bfb 1947 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1948 break;
411e1bfb 1949 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1950 break;
411e1bfb 1951 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1952 break;
411e1bfb 1953 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1954 break;
411e1bfb 1955 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1956 break;
411e1bfb 1957 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1958 break;
411e1bfb 1959 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1960 break;
411e1bfb 1961 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1962 break;
411e1bfb 1963 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1964 break;
411e1bfb 1965 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1966 break;
411e1bfb 1967 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1968 break;
411e1bfb 1969 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1970 break;
411e1bfb 1971 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1972 break;
411e1bfb 1973 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1974 break;
411e1bfb 1975 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1976 break;
411e1bfb 1977 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1978 break;
411e1bfb 1979 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1980 break;
411e1bfb 1981 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1982 break;
411e1bfb 1983 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1984 break;
411e1bfb 1985 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1986 break;
411e1bfb 1987 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1988 break;
411e1bfb 1989 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1990 break;
411e1bfb 1991 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1992 break;
411e1bfb 1993 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 1994 break;
411e1bfb 1995 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 1996 break;
411e1bfb 1997 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 1998 break;
411e1bfb 1999 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2000 break;
411e1bfb 2001 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2002 break;
411e1bfb 2003 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2004 break;
411e1bfb 2005 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2006 break;
411e1bfb 2007 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2008 break;
411e1bfb 2009 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2010 break;
411e1bfb 2011 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2012 break;
411e1bfb 2013 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2014 break;
411e1bfb 2015 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2016 break;
411e1bfb 2017 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2018 break;
411e1bfb 2019 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2020 break;
411e1bfb 2021 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2022 break;
411e1bfb 2023 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2024 break;
411e1bfb 2025 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2026 break;
411e1bfb 2027 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2028 break;
411e1bfb 2029 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2030 break;
411e1bfb 2031 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2032 break;
411e1bfb
AM		 2033 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2034 break;
2035 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2036 break;
2037 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2038 break;
2039 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2040 break;
2041 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2042 break;
2043 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2044 break;
2045 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2046 break;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2048 break;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2050 break;
2051 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2052 break;
2053 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2054 break;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2056 break;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2058 break;
2059 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2060 break;
2061 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2062 break;
2063 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2064 break;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2066 break;
2067 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2068 break;
2069 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2070 break;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2072 break;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2074 break;
2075 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2076 break;
2077 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2078 break;
2079 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2080 break;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2082 break;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2084 break;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2086 break;
2087 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2088 break;
2089 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2090 break;
2091 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2092 break;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2094 break;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2096 break;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2098 break;
2099 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2100 break;
2101 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2102 break;
2103 }
2104
4ce794b7 2105 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2106};
2107
2108/* Set the howto pointer for a PowerPC ELF reloc. */
2109
2110static void
4ce794b7
AM		 2111ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2112 Elf_Internal_Rela *dst)
5bd4f169 2113{
65f38f15
AM		 2114 unsigned int type;
2115
ef60b7ff 2116 /* Initialize howto table if needed. */
5bd4f169 2117 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2118 ppc_howto_init ();
2119
65f38f15
AM		 2120 type = ELF64_R_TYPE (dst->r_info);
2121 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2122 / sizeof (ppc64_elf_howto_table[0])));
2123 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2124}
2125
04c9666a 2126/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2127
2128static bfd_reloc_status_type
4ce794b7
AM		 2129ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2130 void *data, asection *input_section,
2131 bfd *output_bfd, char **error_message)
5bd4f169 2132{
805fc799
AM		 2133 /* If this is a relocatable link (output_bfd test tells us), just
2134 call the generic function. Any adjustment will be done at final
2135 link time. */
2136 if (output_bfd != NULL)
cedb70c5 2137 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2138 input_section, output_bfd, error_message);
2139
2140 /* Adjust the addend for sign extension of the low 16 bits.
2141 We won't actually be using the low 16 bits, so trashing them
2142 doesn't matter. */
2143 reloc_entry->addend += 0x8000;
2144 return bfd_reloc_continue;
2145}
5bd4f169 2146
2441e016
AM		 2147static bfd_reloc_status_type
2148ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2149 void *data, asection *input_section,
2150 bfd *output_bfd, char **error_message)
2151{
2152 if (output_bfd != NULL)
2153 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2154 input_section, output_bfd, error_message);
2155
699733f6
AM		 2156 if (strcmp (symbol->section->name, ".opd") == 0
2157 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2158 {
2159 bfd_vma dest = opd_entry_value (symbol->section,
2160 symbol->value + reloc_entry->addend,
2161 NULL, NULL);
2162 if (dest != (bfd_vma) -1)
2163 reloc_entry->addend = dest - (symbol->value
2164 + symbol->section->output_section->vma
2165 + symbol->section->output_offset);
2166 }
2167 return bfd_reloc_continue;
2168}
2169
805fc799 2170static bfd_reloc_status_type
4ce794b7
AM		 2171ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2172 void *data, asection *input_section,
2173 bfd *output_bfd, char **error_message)
805fc799
AM		 2174{
2175 long insn;
04c9666a 2176 enum elf_ppc64_reloc_type r_type;
805fc799
AM		 2177 bfd_size_type octets;
2178 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2179 bfd_boolean is_power4 = FALSE;
805fc799
AM		 2180
2181 /* If this is a relocatable link (output_bfd test tells us), just
2182 call the generic function. Any adjustment will be done at final
2183 link time. */
5bd4f169 2184 if (output_bfd != NULL)
cedb70c5 2185 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2186 input_section, output_bfd, error_message);
2187
2188 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2189 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2190 insn &= ~(0x01 << 21);
4ce794b7 2191 r_type = reloc_entry->howto->type;
805fc799
AM		 2192 if (r_type == R_PPC64_ADDR14_BRTAKEN
2193 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2194 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 2195
2196 if (is_power4)
5bd4f169 2197 {
805fc799
AM		 2198 /* Set 'a' bit. This is 0b00010 in BO field for branch
2199 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2200 for branch on CTR insns (BO == 1a00t or 1a01t). */
2201 if ((insn & (0x14 << 21)) == (0x04 << 21))
2202 insn |= 0x02 << 21;
2203 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2204 insn |= 0x08 << 21;
2205 else
2441e016 2206 goto out;
5bd4f169 2207 }
805fc799
AM		 2208 else
2209 {
2210 bfd_vma target = 0;
2211 bfd_vma from;
5bd4f169 2212
805fc799
AM		 2213 if (!bfd_is_com_section (symbol->section))
2214 target = symbol->value;
2215 target += symbol->section->output_section->vma;
2216 target += symbol->section->output_offset;
2217 target += reloc_entry->addend;
5bd4f169 2218
805fc799
AM		 2219 from = (reloc_entry->address
2220 + input_section->output_offset
2221 + input_section->output_section->vma);
5bd4f169 2222
805fc799
AM		 2223 /* Invert 'y' bit if not the default. */
2224 if ((bfd_signed_vma) (target - from) < 0)
2225 insn ^= 0x01 << 21;
2226 }
4ce794b7 2227 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2228 out:
2229 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2230 input_section, output_bfd, error_message);
805fc799 2231}
5bd4f169 2232
805fc799 2233static bfd_reloc_status_type
4ce794b7
AM		 2234ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2235 void *data, asection *input_section,
2236 bfd *output_bfd, char **error_message)
805fc799
AM		 2237{
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2240 link time. */
2241 if (output_bfd != NULL)
cedb70c5 2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2243 input_section, output_bfd, error_message);
5bd4f169 2244
805fc799
AM		 2245 /* Subtract the symbol section base address. */
2246 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2247 return bfd_reloc_continue;
2248}
2249
805fc799 2250static bfd_reloc_status_type
4ce794b7
AM		 2251ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2252 void *data, asection *input_section,
2253 bfd *output_bfd, char **error_message)
805fc799
AM		 2254{
2255 /* If this is a relocatable link (output_bfd test tells us), just
2256 call the generic function. Any adjustment will be done at final
2257 link time. */
2258 if (output_bfd != NULL)
cedb70c5 2259 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2260 input_section, output_bfd, error_message);
2261
2262 /* Subtract the symbol section base address. */
2263 reloc_entry->addend -= symbol->section->output_section->vma;
2264
2265 /* Adjust the addend for sign extension of the low 16 bits. */
2266 reloc_entry->addend += 0x8000;
2267 return bfd_reloc_continue;
2268}
2269
2270static bfd_reloc_status_type
4ce794b7
AM		 2271ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2272 void *data, asection *input_section,
2273 bfd *output_bfd, char **error_message)
805fc799
AM		 2274{
2275 bfd_vma TOCstart;
2276
2277 /* If this is a relocatable link (output_bfd test tells us), just
2278 call the generic function. Any adjustment will be done at final
2279 link time. */
2280 if (output_bfd != NULL)
cedb70c5 2281 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2282 input_section, output_bfd, error_message);
2283
2284 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2285 if (TOCstart == 0)
2286 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2287
2288 /* Subtract the TOC base address. */
2289 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2290 return bfd_reloc_continue;
2291}
2292
2293static bfd_reloc_status_type
4ce794b7
AM		 2294ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2295 void *data, asection *input_section,
2296 bfd *output_bfd, char **error_message)
805fc799
AM		 2297{
2298 bfd_vma TOCstart;
2299
2300 /* If this is a relocatable link (output_bfd test tells us), just
2301 call the generic function. Any adjustment will be done at final
2302 link time. */
2303 if (output_bfd != NULL)
cedb70c5 2304 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2305 input_section, output_bfd, error_message);
2306
2307 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2308 if (TOCstart == 0)
2309 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2310
2311 /* Subtract the TOC base address. */
2312 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2313
2314 /* Adjust the addend for sign extension of the low 16 bits. */
2315 reloc_entry->addend += 0x8000;
2316 return bfd_reloc_continue;
2317}
2318
2319static bfd_reloc_status_type
4ce794b7
AM		 2320ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2321 void *data, asection *input_section,
2322 bfd *output_bfd, char **error_message)
805fc799
AM		 2323{
2324 bfd_vma TOCstart;
2325 bfd_size_type octets;
2326
2327 /* If this is a relocatable link (output_bfd test tells us), just
2328 call the generic function. Any adjustment will be done at final
2329 link time. */
2330 if (output_bfd != NULL)
cedb70c5 2331 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2332 input_section, output_bfd, error_message);
2333
2334 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2335 if (TOCstart == 0)
2336 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2337
2338 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2339 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2340 return bfd_reloc_ok;
2341}
2342
2343static bfd_reloc_status_type
4ce794b7
AM		 2344ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2345 void *data, asection *input_section,
2346 bfd *output_bfd, char **error_message)
805fc799
AM		 2347{
2348 /* If this is a relocatable link (output_bfd test tells us), just
2349 call the generic function. Any adjustment will be done at final
2350 link time. */
2351 if (output_bfd != NULL)
cedb70c5 2352 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2353 input_section, output_bfd, error_message);
2354
2355 if (error_message != NULL)
2356 {
2357 static char buf[60];
2358 sprintf (buf, "generic linker can't handle %s",
2359 reloc_entry->howto->name);
2360 *error_message = buf;
2361 }
2362 return bfd_reloc_dangerous;
2363}
2364
e717da7e
AM		 2365struct ppc64_elf_obj_tdata
2366{
2367 struct elf_obj_tdata elf;
2368
2369 /* Shortcuts to dynamic linker sections. */
2370 asection *got;
2371 asection *relgot;
2372
81688140
AM		 2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2376
e717da7e
AM		 2377 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2378 sections means we potentially need one of these for each input bfd. */
2379 union {
2380 bfd_signed_vma refcount;
2381 bfd_vma offset;
2382 } tlsld_got;
8860955f
AM		 2383
2384 /* A copy of relocs before they are modified for --emit-relocs. */
2385 Elf_Internal_Rela *opd_relocs;
e717da7e
AM		 2386};
2387
2388#define ppc64_elf_tdata(bfd) \
2389 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2390
2391#define ppc64_tlsld_got(bfd) \
2392 (&ppc64_elf_tdata (bfd)->tlsld_got)
2393
2394/* Override the generic function because we store some extras. */
2395
2396static bfd_boolean
2397ppc64_elf_mkobject (bfd *abfd)
2398{
2399 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2400 abfd->tdata.any = bfd_zalloc (abfd, amt);
2401 if (abfd->tdata.any == NULL)
2402 return FALSE;
2403 return TRUE;
2404}
2405
ee75fd95
AM		 2406/* Return 1 if target is one of ours. */
2407
7b53ace3 2408static bfd_boolean
ee75fd95 2409is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM		 2410{
2411 extern const bfd_target bfd_elf64_powerpc_vec;
2412 extern const bfd_target bfd_elf64_powerpcle_vec;
2413
2414 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2415}
2416
feee612b
AM		 2417/* Fix bad default arch selected for a 64 bit input bfd when the
2418 default is 32 bit. */
2419
b34976b6 2420static bfd_boolean
4ce794b7 2421ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2422{
2423 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2424 {
2425 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2426
2427 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2428 {
2429 /* Relies on arch after 32 bit default being 64 bit default. */
2430 abfd->arch_info = abfd->arch_info->next;
2431 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2432 }
2433 }
b34976b6 2434 return TRUE;
feee612b
AM		 2435}
2436
d37c89e5
AM		 2437/* Support for core dump NOTE sections. */
2438
2439static bfd_boolean
2440ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2441{
eea6121a 2442 size_t offset, size;
d37c89e5
AM		 2443
2444 if (note->descsz != 504)
2445 return FALSE;
2446
2447 /* pr_cursig */
2448 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2449
2450 /* pr_pid */
2451 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2452
2453 /* pr_reg */
2454 offset = 112;
eea6121a 2455 size = 384;
d37c89e5
AM		 2456
2457 /* Make a ".reg/999" section. */
2458 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2459 size, note->descpos + offset);
d37c89e5
AM		 2460}
2461
2462static bfd_boolean
2463ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2464{
2465 if (note->descsz != 136)
2466 return FALSE;
2467
2468 elf_tdata (abfd)->core_program
2469 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2470 elf_tdata (abfd)->core_command
2471 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2472
2473 return TRUE;
2474}
2475
5bd4f169
AM		 2476/* Merge backend specific data from an object file to the output
2477 object file when linking. */
2f6d9989 2478
b34976b6 2479static bfd_boolean
4ce794b7 2480ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2481{
5bd4f169
AM		 2482 /* Check if we have the same endianess. */
2483 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2484 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM		 2485 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2486 {
2487 const char *msg;
2488
2489 if (bfd_big_endian (ibfd))
d003868e 2490 msg = _("%B: compiled for a big endian system "
4ce794b7 2491 "and target is little endian");
5bd4f169 2492 else
d003868e 2493 msg = _("%B: compiled for a little endian system "
4ce794b7 2494 "and target is big endian");
5bd4f169 2495
d003868e 2496 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM		 2497
2498 bfd_set_error (bfd_error_wrong_format);
b34976b6 2499 return FALSE;
5bd4f169
AM		 2500 }
2501
b34976b6 2502 return TRUE;
5bd4f169 2503}
f0abc2a1 2504
5d35169e
AM		 2505/* Add extra PPC sections. */
2506
2507static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2508{
7dcb9820
AM		 2509 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2511 { ".plt", 4, 0, SHT_NOBITS, 0 },
2512 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2513 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2514 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2515 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2516};
2517
f0abc2a1
AM		 2518struct _ppc64_elf_section_data
2519{
2520 struct bfd_elf_section_data elf;
411e1bfb
AM		 2521
2522 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM		 2523 union
2524 {
411e1bfb 2525 /* Points to the function code section for local opd entries. */
f0abc2a1 2526 asection **func_sec;
411e1bfb 2527 /* After editing .opd, adjust references to opd local syms. */
f0abc2a1
AM		 2528 long *adjust;
2529 } opd;
411e1bfb
AM		 2530
2531 /* An array for toc sections, indexed by offset/8.
2532 Specifies the relocation symbol index used at a given toc offset. */
2533 unsigned *t_symndx;
f0abc2a1
AM		 2534};
2535
2536#define ppc64_elf_section_data(sec) \
411e1bfb 2537 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2538
2539static bfd_boolean
4ce794b7 2540ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM		 2541{
2542 struct _ppc64_elf_section_data *sdata;
2543 bfd_size_type amt = sizeof (*sdata);
2544
4ce794b7 2545 sdata = bfd_zalloc (abfd, amt);
f0abc2a1
AM		 2546 if (sdata == NULL)
2547 return FALSE;
4ce794b7 2548 sec->used_by_bfd = sdata;
f0abc2a1
AM		 2549
2550 return _bfd_elf_new_section_hook (abfd, sec);
2551}
4025353c
AM		 2552
2553static void *
2554get_opd_info (asection * sec)
2555{
2556 if (sec != NULL
2557 && ppc64_elf_section_data (sec) != NULL
2558 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2559 return ppc64_elf_section_data (sec)->opd.adjust;
2560 return NULL;
2561}
90e3cdf2
JJ		 2562\f
2563/* Parameters for the qsort hook. */
2564static asection *synthetic_opd;
2565static bfd_boolean synthetic_relocatable;
2566
699733f6 2567/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 2568
2569static int
2570compare_symbols (const void *ap, const void *bp)
2571{
2572 const asymbol *a = * (const asymbol **) ap;
2573 const asymbol *b = * (const asymbol **) bp;
2574
699733f6
AM		 2575 /* Section symbols first. */
2576 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2577 return -1;
699733f6 2578 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 2579 return 1;
2580
699733f6 2581 /* then .opd symbols. */
90e3cdf2
JJ		 2582 if (a->section == synthetic_opd && b->section != synthetic_opd)
2583 return -1;
2584 if (a->section != synthetic_opd && b->section == synthetic_opd)
2585 return 1;
2586
699733f6 2587 /* then other code symbols. */
90e3cdf2
JJ		 2588 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2589 == (SEC_CODE | SEC_ALLOC)
2590 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2591 != (SEC_CODE | SEC_ALLOC))
2592 return -1;
2593
2594 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2595 != (SEC_CODE | SEC_ALLOC)
2596 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2597 == (SEC_CODE | SEC_ALLOC))
2598 return 1;
2599
2600 if (synthetic_relocatable)
2601 {
2602 if (a->section->id < b->section->id)
2603 return -1;
2604
2605 if (a->section->id > b->section->id)
2606 return 1;
2607 }
2608
2609 if (a->value + a->section->vma < b->value + b->section->vma)
2610 return -1;
2611
2612 if (a->value + a->section->vma > b->value + b->section->vma)
2613 return 1;
2614
2615 return 0;
2616}
2617
699733f6 2618/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2619
699733f6
AM		 2620static asymbol *
2621sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2622{
699733f6 2623 long mid;
90e3cdf2 2624
699733f6
AM		 2625 if (id == -1)
2626 {
2627 while (lo < hi)
2628 {
2629 mid = (lo + hi) >> 1;
2630 if (syms[mid]->value + syms[mid]->section->vma < value)
2631 lo = mid + 1;
2632 else if (syms[mid]->value + syms[mid]->section->vma > value)
2633 hi = mid;
2634 else
2635 return syms[mid];
2636 }
2637 }
2638 else
2639 {
2640 while (lo < hi)
2641 {
2642 mid = (lo + hi) >> 1;
2643 if (syms[mid]->section->id < id)
2644 lo = mid + 1;
2645 else if (syms[mid]->section->id > id)
2646 hi = mid;
2647 else if (syms[mid]->value < value)
2648 lo = mid + 1;
2649 else if (syms[mid]->value > value)
2650 hi = mid;
2651 else
2652 return syms[mid];
2653 }
2654 }
2655 return NULL;
90e3cdf2
JJ		 2656}
2657
699733f6
AM		 2658/* Create synthetic symbols, effectively restoring "dot-symbol" function
2659 entry syms. */
90e3cdf2
JJ		 2660
2661static long
a7535cf3
AM		 2662ppc64_elf_get_synthetic_symtab (bfd *abfd,
2663 long static_count, asymbol **static_syms,
2664 long dyn_count, asymbol **dyn_syms,
c9727e01 2665 asymbol **ret)
90e3cdf2
JJ		 2666{
2667 asymbol *s;
699733f6
AM		 2668 long i;
2669 long count;
90e3cdf2 2670 char *names;
a7535cf3 2671 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2672 asection *opd;
90e3cdf2 2673 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2674 asymbol **syms;
90e3cdf2
JJ		 2675
2676 *ret = NULL;
2677
2678 opd = bfd_get_section_by_name (abfd, ".opd");
2679 if (opd == NULL)
2680 return 0;
2681
a7535cf3 2682 symcount = static_count;
c9727e01 2683 if (!relocatable)
a7535cf3 2684 symcount += dyn_count;
90e3cdf2 2685 if (symcount == 0)
c9727e01 2686 return 0;
90e3cdf2 2687
a7535cf3
AM		 2688 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2689 if (syms == NULL)
2690 return 0;
2691
2692 if (!relocatable && static_count != 0 && dyn_count != 0)
2693 {
2694 /* Use both symbol tables. */
2695 memcpy (syms, static_syms, static_count * sizeof (*syms));
2696 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2697 }
2698 else if (!relocatable && static_count == 0)
2699 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2700 else
2701 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2702
90e3cdf2
JJ		 2703 synthetic_opd = opd;
2704 synthetic_relocatable = relocatable;
595da8c5 2705 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2706
c9727e01
AM		 2707 if (!relocatable && symcount > 1)
2708 {
2709 long j;
2710 /* Trim duplicate syms, since we may have merged the normal and
2711 dynamic symbols. Actually, we only care about syms that have
2712 different values, so trim any with the same value. */
2713 for (i = 1, j = 1; i < symcount; ++i)
2714 if (syms[i - 1]->value + syms[i - 1]->section->vma
2715 != syms[i]->value + syms[i]->section->vma)
2716 syms[j++] = syms[i];
2717 symcount = j;
2718 }
2719
699733f6
AM		 2720 i = 0;
2721 if (syms[i]->section == opd)
2722 ++i;
2723 codesecsym = i;
90e3cdf2 2724
699733f6
AM		 2725 for (; i < symcount; ++i)
2726 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2727 != (SEC_CODE | SEC_ALLOC))
2728 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2729 break;
2730 codesecsymend = i;
90e3cdf2 2731
699733f6
AM		 2732 for (; i < symcount; ++i)
2733 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2734 break;
2735 secsymend = i;
90e3cdf2 2736
699733f6
AM		 2737 for (; i < symcount; ++i)
2738 if (syms[i]->section != opd)
2739 break;
2740 opdsymend = i;
90e3cdf2 2741
699733f6
AM		 2742 for (; i < symcount; ++i)
2743 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2744 != (SEC_CODE | SEC_ALLOC))
2745 break;
2746 symcount = i;
2747
c9727e01 2748 count = 0;
699733f6 2749 if (opdsymend == secsymend)
c9727e01 2750 goto done;
90e3cdf2 2751
699733f6 2752 if (relocatable)
90e3cdf2 2753 {
699733f6
AM		 2754 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2755 arelent *r;
2756 size_t size;
2757 long relcount;
90e3cdf2 2758
699733f6 2759 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2
JJ		 2760 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2761
2762 if (! relcount
595da8c5 2763 || ! (*slurp_relocs) (abfd, opd, static_syms, FALSE))
c9727e01 2764 goto done;
90e3cdf2 2765
699733f6 2766 size = 0;
595da8c5 2767 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2768 {
2769 asymbol *sym;
90e3cdf2 2770
595da8c5 2771 while (r < opd->relocation + relcount
699733f6
AM		 2772 && r->address < syms[i]->value + opd->vma)
2773 ++r;
90e3cdf2 2774
595da8c5 2775 if (r == opd->relocation + relcount)
699733f6 2776 break;
90e3cdf2 2777
699733f6
AM		 2778 if (r->address != syms[i]->value + opd->vma)
2779 continue;
90e3cdf2 2780
699733f6
AM		 2781 if (r->howto->type != R_PPC64_ADDR64)
2782 continue;
90e3cdf2 2783
699733f6
AM		 2784 sym = *r->sym_ptr_ptr;
2785 if (!sym_exists_at (syms, opdsymend, symcount,
2786 sym->section->id, sym->value + r->addend))
2787 {
2788 ++count;
2789 size += sizeof (asymbol);
2790 size += strlen (syms[i]->name) + 2;
2791 }
2792 }
90e3cdf2 2793
699733f6
AM		 2794 s = *ret = bfd_malloc (size);
2795 if (s == NULL)
2796 {
c9727e01
AM		 2797 count = 0;
2798 goto done;
699733f6 2799 }
90e3cdf2 2800
699733f6 2801 names = (char *) (s + count);
90e3cdf2 2802
595da8c5 2803 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2804 {
699733f6 2805 asymbol *sym;
90e3cdf2 2806
595da8c5 2807 while (r < opd->relocation + relcount
699733f6
AM		 2808 && r->address < syms[i]->value + opd->vma)
2809 ++r;
90e3cdf2 2810
595da8c5 2811 if (r == opd->relocation + relcount)
699733f6
AM		 2812 break;
2813
2814 if (r->address != syms[i]->value + opd->vma)
2815 continue;
2816
2817 if (r->howto->type != R_PPC64_ADDR64)
2818 continue;
90e3cdf2 2819
699733f6
AM		 2820 sym = *r->sym_ptr_ptr;
2821 if (!sym_exists_at (syms, opdsymend, symcount,
2822 sym->section->id, sym->value + r->addend))
2823 {
2824 size_t len;
2825
2826 *s = *syms[i];
2827 s->section = sym->section;
2828 s->value = sym->value + r->addend;
2829 s->name = names;
2830 *names++ = '.';
2831 len = strlen (syms[i]->name);
2832 memcpy (names, syms[i]->name, len + 1);
2833 names += len + 1;
2834 s++;
2835 }
2836 }
2837 }
2838 else
90e3cdf2 2839 {
699733f6
AM		 2840 bfd_byte *contents;
2841 size_t size;
90e3cdf2 2842
699733f6
AM		 2843 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2844 {
2845 if (contents)
c9727e01
AM		 2846 {
2847 free_contents_and_exit:
2848 free (contents);
2849 }
2850 goto done;
699733f6 2851 }
90e3cdf2 2852
699733f6
AM		 2853 size = 0;
2854 for (i = secsymend; i < opdsymend; ++i)
2855 {
2856 bfd_vma ent;
90e3cdf2 2857
699733f6
AM		 2858 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2859 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2860 {
2861 ++count;
2862 size += sizeof (asymbol);
2863 size += strlen (syms[i]->name) + 2;
2864 }
2865 }
90e3cdf2 2866
699733f6
AM		 2867 s = *ret = bfd_malloc (size);
2868 if (s == NULL)
2869 {
c9727e01
AM		 2870 count = 0;
2871 goto free_contents_and_exit;
699733f6 2872 }
90e3cdf2 2873
699733f6 2874 names = (char *) (s + count);
90e3cdf2 2875
699733f6 2876 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2877 {
699733f6 2878 bfd_vma ent;
90e3cdf2 2879
699733f6
AM		 2880 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2881 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 2882 {
c9727e01 2883 long lo, hi;
699733f6 2884 size_t len;
c9727e01 2885 asection *sec = abfd->sections;
90e3cdf2 2886
699733f6
AM		 2887 *s = *syms[i];
2888 lo = codesecsym;
2889 hi = codesecsymend;
2890 while (lo < hi)
2891 {
c9727e01 2892 long mid = (lo + hi) >> 1;
699733f6
AM		 2893 if (syms[mid]->section->vma < ent)
2894 lo = mid + 1;
2895 else if (syms[mid]->section->vma > ent)
2896 hi = mid;
2897 else
c9727e01
AM		 2898 {
2899 sec = syms[mid]->section;
2900 break;
2901 }
699733f6
AM		 2902 }
2903
c9727e01 2904 if (lo >= hi && lo > codesecsym)
699733f6 2905 sec = syms[lo - 1]->section;
699733f6
AM		 2906
2907 for (; sec != NULL; sec = sec->next)
2908 {
2909 if (sec->vma > ent)
2910 break;
2911 if ((sec->flags & SEC_ALLOC) == 0
2912 || (sec->flags & SEC_LOAD) == 0)
2913 break;
2914 if ((sec->flags & SEC_CODE) != 0)
2915 s->section = sec;
2916 }
2917 s->value = ent - s->section->vma;
2918 s->name = names;
2919 *names++ = '.';
2920 len = strlen (syms[i]->name);
2921 memcpy (names, syms[i]->name, len + 1);
2922 names += len + 1;
2923 s++;
90e3cdf2 2924 }
90e3cdf2 2925 }
699733f6 2926 free (contents);
90e3cdf2
JJ		 2927 }
2928
c9727e01 2929 done:
a7535cf3 2930 free (syms);
90e3cdf2
JJ		 2931 return count;
2932}
5bd4f169 2933\f
65f38f15
AM		 2934/* The following functions are specific to the ELF linker, while
2935 functions above are used generally. Those named ppc64_elf_* are
2936 called by the main ELF linker code. They appear in this file more
2937 or less in the order in which they are called. eg.
2938 ppc64_elf_check_relocs is called early in the link process,
2939 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 2940 called.
2941
2942 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2943 functions have both a function code symbol and a function descriptor
2944 symbol. A call to foo in a relocatable object file looks like:
2945
2946 . .text
2947 . x:
2948 . bl .foo
2949 . nop
2950
2951 The function definition in another object file might be:
2952
2953 . .section .opd
2954 . foo: .quad .foo
2955 . .quad .TOC.@tocbase
2956 . .quad 0
2957 .
2958 . .text
2959 . .foo: blr
2960
2961 When the linker resolves the call during a static link, the branch
2962 unsurprisingly just goes to .foo and the .opd information is unused.
2963 If the function definition is in a shared library, things are a little
2964 different: The call goes via a plt call stub, the opd information gets
2965 copied to the plt, and the linker patches the nop.
2966
2967 . x:
2968 . bl .foo_stub
2969 . ld 2,40(1)
2970 .
2971 .
2972 . .foo_stub:
2973 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 2974 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 2975 . std 2,40(1) # this is the general idea
2976 . ld 11,0(12)
2977 . ld 2,8(12)
2978 . mtctr 11
2979 . ld 11,16(12)
2980 . bctr
2981 .
2982 . .section .plt
2983 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2984
2985 The "reloc ()" notation is supposed to indicate that the linker emits
2986 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2987 copying.
2988
2989 What are the difficulties here? Well, firstly, the relocations
2990 examined by the linker in check_relocs are against the function code
2991 sym .foo, while the dynamic relocation in the plt is emitted against
2992 the function descriptor symbol, foo. Somewhere along the line, we need
2993 to carefully copy dynamic link information from one symbol to the other.
2994 Secondly, the generic part of the elf linker will make .foo a dynamic
2995 symbol as is normal for most other backends. We need foo dynamic
2996 instead, at least for an application final link. However, when
2997 creating a shared library containing foo, we need to have both symbols
2998 dynamic so that references to .foo are satisfied during the early
2999 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3000 definition from some other object, eg. a static library.
3001
3002 Update: As of August 2004, we support a new convention. Function
3003 calls may use the function descriptor symbol, ie. "bl foo". This
3004 behaves exactly as "bl .foo". */
65f38f15
AM		 3005
3006/* The linker needs to keep track of the number of relocs that it
3007 decides to copy as dynamic relocs in check_relocs for each symbol.
3008 This is so that it can later discard them if they are found to be
3009 unnecessary. We store the information in a field extending the
3010 regular ELF linker hash table. */
3011
3012struct ppc_dyn_relocs
3013{
3014 struct ppc_dyn_relocs *next;
3015
3016 /* The input section of the reloc. */
3017 asection *sec;
3018
3019 /* Total number of relocs copied for the input section. */
3020 bfd_size_type count;
3021
3022 /* Number of pc-relative relocs copied for the input section. */
3023 bfd_size_type pc_count;
3024};
3025
411e1bfb
AM		 3026/* Track GOT entries needed for a given symbol. We might need more
3027 than one got entry per symbol. */
3028struct got_entry
3029{
3030 struct got_entry *next;
3031
e7b938ca 3032 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3033 bfd_vma addend;
3034
e717da7e
AM		 3035 /* Unlike other ELF targets, we use separate GOT entries for the same
3036 symbol referenced from different input files. This is to support
3037 automatic multiple TOC/GOT sections, where the TOC base can vary
3038 from one input file to another.
3039
3040 Point to the BFD owning this GOT entry. */
3041 bfd *owner;
3042
3043 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3044 TLS_TPREL or TLS_DTPREL for tls entries. */
3045 char tls_type;
3046
e7b938ca 3047 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3048 union
3049 {
3050 bfd_signed_vma refcount;
3051 bfd_vma offset;
3052 } got;
411e1bfb
AM		 3053};
3054
3055/* The same for PLT. */
3056struct plt_entry
3057{
3058 struct plt_entry *next;
3059
3060 bfd_vma addend;
3061
3062 union
3063 {
3064 bfd_signed_vma refcount;
3065 bfd_vma offset;
3066 } plt;
3067};
3068
65f38f15 3069/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM		 3070 selects those that must be copied when linking a shared library,
3071 even when the symbol is local. */
65f38f15 3072
411e1bfb 3073#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM		 3074 ((RTYPE) != R_PPC64_REL32 \
3075 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3076 && (RTYPE) != R_PPC64_REL30)
65f38f15 3077
f4656909
AM		 3078/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3081 shared lib. With code that gcc generates, it's vital that this be
3082 enabled; In the PowerPC64 ABI, the address of a function is actually
3083 the address of a function descriptor, which resides in the .opd
3084 section. gcc uses the descriptor directly rather than going via the
3085 GOT as some other ABI's do, which means that initialized function
3086 pointers must reference the descriptor. Thus, a function pointer
3087 initialized to the address of a function in a shared library will
3088 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3089 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3090 presents a problem as a plt entry for that function is also
3091 initialized from the function descriptor symbol and the copy reloc
3092 may not be initialized first. */
a23b6845 3093#define ELIMINATE_COPY_RELOCS 1
f4656909 3094
721956f4
AM		 3095/* Section name for stubs is the associated section name plus this
3096 string. */
3097#define STUB_SUFFIX ".stub"
3098
3099/* Linker stubs.
3100 ppc_stub_long_branch:
3101 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3102 destination, but a 24 bit branch in a stub section will reach.
3103 . b dest
3104
3105 ppc_stub_plt_branch:
3106 Similar to the above, but a 24 bit branch in the stub section won't
3107 reach its destination.
87e226ce
AM		 3108 . addis %r12,%r2,xxx@toc@ha
3109 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3110 . mtctr %r11
3111 . bctr
3112
3113 ppc_stub_plt_call:
2c66dc6c
AM		 3114 Used to call a function in a shared library. If it so happens that
3115 the plt entry referenced crosses a 64k boundary, then an extra
3116 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3117 xxx+16 as appropriate.
87e226ce 3118 . addis %r12,%r2,xxx@toc@ha
721956f4 3119 . std %r2,40(%r1)
87e226ce
AM		 3120 . ld %r11,xxx+0@toc@l(%r12)
3121 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3122 . mtctr %r11
87e226ce 3123 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3124 . bctr
ad8e1ba5
AM		 3125
3126 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3127 code to adjust the value and save r2 to support multiple toc sections.
3128 A ppc_stub_long_branch with an r2 offset looks like:
3129 . std %r2,40(%r1)
3130 . addis %r2,%r2,off@ha
3131 . addi %r2,%r2,off@l
3132 . b dest
3133
3134 A ppc_stub_plt_branch with an r2 offset looks like:
3135 . std %r2,40(%r1)
3136 . addis %r12,%r2,xxx@toc@ha
3137 . ld %r11,xxx@toc@l(%r12)
3138 . addis %r2,%r2,off@ha
3139 . addi %r2,%r2,off@l
3140 . mtctr %r11
3141 . bctr
721956f4
AM		 3142*/
3143
3144enum ppc_stub_type {
3145 ppc_stub_none,
3146 ppc_stub_long_branch,
ad8e1ba5 3147 ppc_stub_long_branch_r2off,
721956f4 3148 ppc_stub_plt_branch,
ad8e1ba5 3149 ppc_stub_plt_branch_r2off,
721956f4
AM		 3150 ppc_stub_plt_call
3151};
3152
3153struct ppc_stub_hash_entry {
3154
3155 /* Base hash table entry structure. */
3156 struct bfd_hash_entry root;
3157
ad8e1ba5
AM		 3158 enum ppc_stub_type stub_type;
3159
721956f4
AM		 3160 /* The stub section. */
3161 asection *stub_sec;
3162
3163 /* Offset within stub_sec of the beginning of this stub. */
3164 bfd_vma stub_offset;
3165
3166 /* Given the symbol's value and its section we can determine its final
3167 value when building the stubs (so the stub knows where to jump. */
3168 bfd_vma target_value;
3169 asection *target_section;
3170
721956f4
AM		 3171 /* The symbol table entry, if any, that this was derived from. */
3172 struct ppc_link_hash_entry *h;
3173
411e1bfb
AM		 3174 /* And the reloc addend that this was derived from. */
3175 bfd_vma addend;
3176
721956f4
AM		 3177 /* Where this stub is being called from, or, in the case of combined
3178 stub sections, the first input section in the group. */
3179 asection *id_sec;
3180};
3181
3182struct ppc_branch_hash_entry {
3183
3184 /* Base hash table entry structure. */
3185 struct bfd_hash_entry root;
3186
3187 /* Offset within .branch_lt. */
3188 unsigned int offset;
3189
3190 /* Generation marker. */
3191 unsigned int iter;
3192};
65f38f15
AM		 3193
3194struct ppc_link_hash_entry
3195{
3196 struct elf_link_hash_entry elf;
3197
721956f4
AM		 3198 /* A pointer to the most recently used stub hash entry against this
3199 symbol. */
3200 struct ppc_stub_hash_entry *stub_cache;
3201
65f38f15
AM		 3202 /* Track dynamic relocs copied for this symbol. */
3203 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3204
721956f4 3205 /* Link between function code and descriptor symbols. */
34814b9f 3206 struct ppc_link_hash_entry *oh;
721956f4 3207
e86ce104
AM		 3208 /* Flag function code and descriptor symbols. */
3209 unsigned int is_func:1;
3210 unsigned int is_func_descriptor:1;
908b32fc 3211 unsigned int fake:1;
411e1bfb 3212
c5614fa4
AM		 3213 /* Whether global opd/toc sym has been adjusted or not.
3214 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3215 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3216 unsigned int adjust_done:1;
3217
99877b66
AM		 3218 /* Set if we twiddled this symbol to weak at some stage. */
3219 unsigned int was_undefined:1;
3220
411e1bfb 3221 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3222 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3223 corresponding relocs are encountered during check_relocs.
3224 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3225 indicate the corresponding GOT entry type is not needed.
3226 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3227 a TPREL one. We use a separate flag rather than setting TPREL
3228 just for convenience in distinguishing the two cases. */
3229#define TLS_GD 1 /* GD reloc. */
3230#define TLS_LD 2 /* LD reloc. */
3231#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3232#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3233#define TLS_TLS 16 /* Any TLS reloc. */
3234#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3235#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3236 char tls_mask;
65f38f15
AM		 3237};
3238
3239/* ppc64 ELF linker hash table. */
3240
3241struct ppc_link_hash_table
3242{
3243 struct elf_link_hash_table elf;
3244
721956f4
AM		 3245 /* The stub hash table. */
3246 struct bfd_hash_table stub_hash_table;
3247
3248 /* Another hash table for plt_branch stubs. */
3249 struct bfd_hash_table branch_hash_table;
3250
3251 /* Linker stub bfd. */
3252 bfd *stub_bfd;
3253
3254 /* Linker call-backs. */
4ce794b7
AM		 3255 asection * (*add_stub_section) (const char *, asection *);
3256 void (*layout_sections_again) (void);
721956f4
AM		 3257
3258 /* Array to keep track of which stub sections have been created, and
3259 information on stub grouping. */
3260 struct map_stub {
3261 /* This is the section to which stubs in the group will be attached. */
3262 asection *link_sec;
3263 /* The stub section. */
3264 asection *stub_sec;
ad8e1ba5
AM		 3265 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3266 bfd_vma toc_off;
721956f4
AM		 3267 } *stub_group;
3268
ad8e1ba5
AM		 3269 /* Temp used when calculating TOC pointers. */
3270 bfd_vma toc_curr;
3271
8f3bab57
AM		 3272 /* Highest input section id. */
3273 int top_id;
3274
734b6cf9
AM		 3275 /* Highest output section index. */
3276 int top_index;
3277
3278 /* List of input sections for each output section. */
3279 asection **input_list;
721956f4 3280
65f38f15 3281 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3282 asection *got;
4ce794b7
AM		 3283 asection *plt;
3284 asection *relplt;
3285 asection *dynbss;
3286 asection *relbss;
3287 asection *glink;
82bd7b59 3288 asection *sfpr;
4ce794b7
AM		 3289 asection *brlt;
3290 asection *relbrlt;
ec338859 3291
8387904d
AM		 3292 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3293 struct ppc_link_hash_entry *tls_get_addr;
3294 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3295
9b5ecbd0
AM		 3296 /* Statistics. */
3297 unsigned long stub_count[ppc_stub_plt_call];
3298
ee75fd95
AM		 3299 /* Number of stubs against global syms. */
3300 unsigned long stub_globals;
3301
ad8e1ba5 3302 /* Set if we should emit symbols for stubs. */
99877b66 3303 unsigned int emit_stub_syms:1;
ad8e1ba5 3304
4c52953f
AM		 3305 /* Support for multiple toc sections. */
3306 unsigned int no_multi_toc:1;
3307 unsigned int multi_toc_needed:1;
3308
5d1634d7 3309 /* Set on error. */
99877b66 3310 unsigned int stub_error:1;
721956f4
AM		 3311
3312 /* Flag set when small branches are detected. Used to
3313 select suitable defaults for the stub group size. */
99877b66
AM		 3314 unsigned int has_14bit_branch:1;
3315
3316 /* Temp used by ppc64_elf_check_directives. */
3317 unsigned int twiddled_syms:1;
721956f4
AM		 3318
3319 /* Incremented every time we size stubs. */
3320 unsigned int stub_iteration;
5d1634d7 3321
ec338859
AM		 3322 /* Small local sym to section mapping cache. */
3323 struct sym_sec_cache sym_sec;
65f38f15
AM		 3324};
3325
4c52953f
AM		 3326/* Rename some of the generic section flags to better document how they
3327 are used here. */
3328#define has_toc_reloc has_gp_reloc
3329#define makes_toc_func_call need_finalize_relax
3330#define call_check_in_progress reloc_done
3331
65f38f15
AM		 3332/* Get the ppc64 ELF linker hash table from a link_info structure. */
3333
3334#define ppc_hash_table(p) \
3335 ((struct ppc_link_hash_table *) ((p)->hash))
3336
721956f4
AM		 3337#define ppc_stub_hash_lookup(table, string, create, copy) \
3338 ((struct ppc_stub_hash_entry *) \
3339 bfd_hash_lookup ((table), (string), (create), (copy)))
3340
3341#define ppc_branch_hash_lookup(table, string, create, copy) \
3342 ((struct ppc_branch_hash_entry *) \
3343 bfd_hash_lookup ((table), (string), (create), (copy)))
3344
3345/* Create an entry in the stub hash table. */
3346
3347static struct bfd_hash_entry *
4ce794b7
AM		 3348stub_hash_newfunc (struct bfd_hash_entry *entry,
3349 struct bfd_hash_table *table,
3350 const char *string)
721956f4
AM		 3351{
3352 /* Allocate the structure if it has not already been allocated by a
3353 subclass. */
3354 if (entry == NULL)
3355 {
3356 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3357 if (entry == NULL)
3358 return entry;
3359 }
3360
3361 /* Call the allocation method of the superclass. */
3362 entry = bfd_hash_newfunc (entry, table, string);
3363 if (entry != NULL)
3364 {
3365 struct ppc_stub_hash_entry *eh;
3366
3367 /* Initialize the local fields. */
3368 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3369 eh->stub_type = ppc_stub_none;
721956f4
AM		 3370 eh->stub_sec = NULL;
3371 eh->stub_offset = 0;
3372 eh->target_value = 0;
3373 eh->target_section = NULL;
721956f4
AM		 3374 eh->h = NULL;
3375 eh->id_sec = NULL;
3376 }
3377
3378 return entry;
3379}
3380
3381/* Create an entry in the branch hash table. */
3382
3383static struct bfd_hash_entry *
4ce794b7
AM		 3384branch_hash_newfunc (struct bfd_hash_entry *entry,
3385 struct bfd_hash_table *table,
3386 const char *string)
721956f4
AM		 3387{
3388 /* Allocate the structure if it has not already been allocated by a
3389 subclass. */
3390 if (entry == NULL)
3391 {
3392 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3393 if (entry == NULL)
3394 return entry;
3395 }
3396
3397 /* Call the allocation method of the superclass. */
3398 entry = bfd_hash_newfunc (entry, table, string);
3399 if (entry != NULL)
3400 {
3401 struct ppc_branch_hash_entry *eh;
3402
3403 /* Initialize the local fields. */
3404 eh = (struct ppc_branch_hash_entry *) entry;
3405 eh->offset = 0;
3406 eh->iter = 0;
3407 }
3408
3409 return entry;
3410}
3411
65f38f15
AM		 3412/* Create an entry in a ppc64 ELF linker hash table. */
3413
3414static struct bfd_hash_entry *
4ce794b7
AM		 3415link_hash_newfunc (struct bfd_hash_entry *entry,
3416 struct bfd_hash_table *table,
3417 const char *string)
65f38f15
AM		 3418{
3419 /* Allocate the structure if it has not already been allocated by a
3420 subclass. */
3421 if (entry == NULL)
3422 {
3423 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3424 if (entry == NULL)
3425 return entry;
3426 }
3427
3428 /* Call the allocation method of the superclass. */
3429 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3430 if (entry != NULL)
3431 {
3432 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3433
908b32fc
AM		 3434 memset (&eh->stub_cache, 0,
3435 (sizeof (struct ppc_link_hash_entry)
3436 - offsetof (struct ppc_link_hash_entry, stub_cache)));
65f38f15
AM		 3437 }
3438
3439 return entry;
3440}
3441
3442/* Create a ppc64 ELF linker hash table. */
3443
3444static struct bfd_link_hash_table *
4ce794b7 3445ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3446{
3447 struct ppc_link_hash_table *htab;
3448 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3449
4ce794b7 3450 htab = bfd_zmalloc (amt);
65f38f15
AM		 3451 if (htab == NULL)
3452 return NULL;
3453
3454 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3455 {
e2d34d7d 3456 free (htab);
65f38f15
AM		 3457 return NULL;
3458 }
3459
721956f4
AM		 3460 /* Init the stub hash table too. */
3461 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3462 return NULL;
3463
3464 /* And the branch hash table. */
3465 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3466 return NULL;
3467
3254fd24
AM		 3468 /* Initializing two fields of the union is just cosmetic. We really
3469 only care about glist, but when compiled on a 32-bit host the
3470 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3471 debugger inspection of these fields look nicer. */
3472 htab->elf.init_refcount.refcount = 0;
3473 htab->elf.init_refcount.glist = NULL;
3474 htab->elf.init_offset.offset = 0;
3475 htab->elf.init_offset.glist = NULL;
3476
65f38f15
AM		 3477 return &htab->elf.root;
3478}
3479
721956f4
AM		 3480/* Free the derived linker hash table. */
3481
3482static void
4ce794b7 3483ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3484{
3485 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3486
3487 bfd_hash_table_free (&ret->stub_hash_table);
3488 bfd_hash_table_free (&ret->branch_hash_table);
3489 _bfd_generic_link_hash_table_free (hash);
3490}
3491
e717da7e
AM		 3492/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3493
3494void
3495ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3496{
3497 struct ppc_link_hash_table *htab;
3498
3499 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3500
3501/* Always hook our dynamic sections into the first bfd, which is the
3502 linker created stub bfd. This ensures that the GOT header is at
3503 the start of the output TOC section. */
3504 htab = ppc_hash_table (info);
3505 htab->stub_bfd = abfd;
3506 htab->elf.dynobj = abfd;
3507}
3508
721956f4
AM		 3509/* Build a name for an entry in the stub hash table. */
3510
3511static char *
4ce794b7
AM		 3512ppc_stub_name (const asection *input_section,
3513 const asection *sym_sec,
3514 const struct ppc_link_hash_entry *h,
3515 const Elf_Internal_Rela *rel)
721956f4
AM		 3516{
3517 char *stub_name;
3518 bfd_size_type len;
3519
3520 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3521 offsets from a sym as a branch target? In fact, we could
3522 probably assume the addend is always zero. */
3523 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3524
3525 if (h)
3526 {
3527 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3528 stub_name = bfd_malloc (len);
3529 if (stub_name != NULL)
3530 {
97b639ba 3531 sprintf (stub_name, "%08x.%s+%x",
721956f4
AM		 3532 input_section->id & 0xffffffff,
3533 h->elf.root.root.string,
3534 (int) rel->r_addend & 0xffffffff);
3535 }
3536 }
3537 else
3538 {
ad8e1ba5 3539 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4
AM		 3540 stub_name = bfd_malloc (len);
3541 if (stub_name != NULL)
3542 {
97b639ba 3543 sprintf (stub_name, "%08x.%x:%x+%x",
721956f4
AM		 3544 input_section->id & 0xffffffff,
3545 sym_sec->id & 0xffffffff,
3546 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3547 (int) rel->r_addend & 0xffffffff);
3548 }
3549 }
ee75fd95
AM		 3550 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3551 stub_name[len - 2] = 0;
721956f4
AM		 3552 return stub_name;
3553}
3554
3555/* Look up an entry in the stub hash. Stub entries are cached because
3556 creating the stub name takes a bit of time. */
3557
3558static struct ppc_stub_hash_entry *
4ce794b7
AM		 3559ppc_get_stub_entry (const asection *input_section,
3560 const asection *sym_sec,
039b3fef 3561 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3562 const Elf_Internal_Rela *rel,
3563 struct ppc_link_hash_table *htab)
721956f4
AM		 3564{
3565 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3566 const asection *id_sec;
3567
3568 /* If this input section is part of a group of sections sharing one
3569 stub section, then use the id of the first section in the group.
3570 Stub names need to include a section id, as there may well be
3571 more than one stub used to reach say, printf, and we need to
3572 distinguish between them. */
3573 id_sec = htab->stub_group[input_section->id].link_sec;
3574
3575 if (h != NULL && h->stub_cache != NULL
3576 && h->stub_cache->h == h
3577 && h->stub_cache->id_sec == id_sec)
3578 {
3579 stub_entry = h->stub_cache;
3580 }
3581 else
3582 {
3583 char *stub_name;
3584
3585 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3586 if (stub_name == NULL)
3587 return NULL;
3588
3589 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3590 stub_name, FALSE, FALSE);
721956f4
AM		 3591 if (h != NULL)
3592 h->stub_cache = stub_entry;
3593
3594 free (stub_name);
3595 }
3596
3597 return stub_entry;
3598}
3599
3600/* Add a new stub entry to the stub hash. Not all fields of the new
3601 stub entry are initialised. */
3602
3603static struct ppc_stub_hash_entry *
4ce794b7
AM		 3604ppc_add_stub (const char *stub_name,
3605 asection *section,
3606 struct ppc_link_hash_table *htab)
721956f4
AM		 3607{
3608 asection *link_sec;
3609 asection *stub_sec;
3610 struct ppc_stub_hash_entry *stub_entry;
3611
3612 link_sec = htab->stub_group[section->id].link_sec;
3613 stub_sec = htab->stub_group[section->id].stub_sec;
3614 if (stub_sec == NULL)
3615 {
3616 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3617 if (stub_sec == NULL)
3618 {
d4c88bbb 3619 size_t namelen;
721956f4
AM		 3620 bfd_size_type len;
3621 char *s_name;
3622
d4c88bbb
AM		 3623 namelen = strlen (link_sec->name);
3624 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3625 s_name = bfd_alloc (htab->stub_bfd, len);
3626 if (s_name == NULL)
3627 return NULL;
3628
d4c88bbb
AM		 3629 memcpy (s_name, link_sec->name, namelen);
3630 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3631 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3632 if (stub_sec == NULL)
3633 return NULL;
3634 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3635 }
3636 htab->stub_group[section->id].stub_sec = stub_sec;
3637 }
3638
3639 /* Enter this entry into the linker stub hash table. */
3640 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3641 TRUE, FALSE);
721956f4
AM		 3642 if (stub_entry == NULL)
3643 {
d003868e
AM		 3644 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3645 section->owner, stub_name);
721956f4
AM		 3646 return NULL;
3647 }
3648
3649 stub_entry->stub_sec = stub_sec;
3650 stub_entry->stub_offset = 0;
3651 stub_entry->id_sec = link_sec;
3652 return stub_entry;
3653}
3654
82bd7b59
AM		 3655/* Create sections for linker generated code. */
3656
b34976b6 3657static bfd_boolean
4ce794b7 3658create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3659{
3660 struct ppc_link_hash_table *htab;
3661 flagword flags;
3662
3663 htab = ppc_hash_table (info);
3664
3665 /* Create .sfpr for code to save and restore fp regs. */
3666 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3667 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 3668 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 3669 if (htab->sfpr == NULL
3670 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3671 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3672 return FALSE;
82bd7b59 3673
721956f4 3674 /* Create .glink for lazy dynamic linking support. */
4ce794b7
AM		 3675 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3676 if (htab->glink == NULL
3677 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3678 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
b34976b6 3679 return FALSE;
82bd7b59 3680
721956f4
AM		 3681 /* Create .branch_lt for plt_branch stubs. */
3682 flags = (SEC_ALLOC | SEC_LOAD
3683 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3684 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3685 if (htab->brlt == NULL
3686 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3687 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3688 return FALSE;
721956f4 3689
ee75fd95 3690 if (info->shared || info->emitrelocations)
721956f4
AM		 3691 {
3692 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3693 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4ce794b7
AM		 3694 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3695 if (!htab->relbrlt
3696 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3697 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
b34976b6 3698 return FALSE;
721956f4 3699 }
b34976b6 3700 return TRUE;
82bd7b59
AM		 3701}
3702
e717da7e
AM		 3703/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3704 not already done. */
65f38f15 3705
b34976b6 3706static bfd_boolean
e717da7e 3707create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3708{
e717da7e
AM		 3709 asection *got, *relgot;
3710 flagword flags;
3711 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3712
4ce794b7 3713 if (!htab->got)
e717da7e
AM		 3714 {
3715 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3716 return FALSE;
3717
3718 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3719 if (!htab->got)
3720 abort ();
3721 }
3722
3723 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3724 | SEC_LINKER_CREATED);
3725
3726 got = bfd_make_section (abfd, ".got");
3727 if (!got
3728 || !bfd_set_section_flags (abfd, got, flags)
3729 || !bfd_set_section_alignment (abfd, got, 3))
3730 return FALSE;
65f38f15 3731
e717da7e
AM		 3732 relgot = bfd_make_section (abfd, ".rela.got");
3733 if (!relgot
3734 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3735 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3736 return FALSE;
e717da7e
AM		 3737
3738 ppc64_elf_tdata (abfd)->got = got;
3739 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3740 return TRUE;
65f38f15 3741}
5bd4f169 3742
82bd7b59 3743/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3744
b34976b6 3745static bfd_boolean
4ce794b7 3746ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3747{
65f38f15 3748 struct ppc_link_hash_table *htab;
5bd4f169 3749
65f38f15 3750 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3751 return FALSE;
65f38f15 3752
e717da7e
AM		 3753 htab = ppc_hash_table (info);
3754 if (!htab->got)
3755 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 3756 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3757 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3758 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3759 if (!info->shared)
4ce794b7 3760 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3761
e717da7e 3762 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3763 || (!info->shared && !htab->relbss))
65f38f15
AM		 3764 abort ();
3765
b34976b6 3766 return TRUE;
5bd4f169
AM		 3767}
3768
40d16e0b
AM		 3769/* Merge PLT info on FROM with that on TO. */
3770
3771static void
3772move_plt_plist (struct ppc_link_hash_entry *from,
3773 struct ppc_link_hash_entry *to)
3774{
3775 if (from->elf.plt.plist != NULL)
3776 {
3777 if (to->elf.plt.plist != NULL)
3778 {
3779 struct plt_entry **entp;
3780 struct plt_entry *ent;
3781
3782 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3783 {
3784 struct plt_entry *dent;
3785
3786 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3787 if (dent->addend == ent->addend)
3788 {
3789 dent->plt.refcount += ent->plt.refcount;
3790 *entp = ent->next;
3791 break;
3792 }
3793 if (dent == NULL)
3794 entp = &ent->next;
3795 }
3796 *entp = to->elf.plt.plist;
3797 }
3798
3799 to->elf.plt.plist = from->elf.plt.plist;
3800 from->elf.plt.plist = NULL;
3801 }
3802}
3803
65f38f15
AM		 3804/* Copy the extra info we tack onto an elf_link_hash_entry. */
3805
3806static void
9c5bfbb7
AM		 3807ppc64_elf_copy_indirect_symbol
3808 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3809 struct elf_link_hash_entry *dir,
3810 struct elf_link_hash_entry *ind)
65f38f15
AM		 3811{
3812 struct ppc_link_hash_entry *edir, *eind;
3813
3814 edir = (struct ppc_link_hash_entry *) dir;
3815 eind = (struct ppc_link_hash_entry *) ind;
3816
411e1bfb 3817 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3818 if (eind->dyn_relocs != NULL)
65f38f15 3819 {
bbd7ec4a
AM		 3820 if (edir->dyn_relocs != NULL)
3821 {
3822 struct ppc_dyn_relocs **pp;
3823 struct ppc_dyn_relocs *p;
3824
411e1bfb 3825 if (eind->elf.root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 3826 abort ();
3827
3828 /* Add reloc counts against the weak sym to the strong sym
3829 list. Merge any entries against the same section. */
3830 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3831 {
3832 struct ppc_dyn_relocs *q;
3833
3834 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3835 if (q->sec == p->sec)
3836 {
3837 q->pc_count += p->pc_count;
3838 q->count += p->count;
3839 *pp = p->next;
3840 break;
3841 }
3842 if (q == NULL)
3843 pp = &p->next;
3844 }
3845 *pp = edir->dyn_relocs;
3846 }
3847
65f38f15
AM		 3848 edir->dyn_relocs = eind->dyn_relocs;
3849 eind->dyn_relocs = NULL;
3850 }
65f38f15 3851
6349e628
AM		 3852 edir->is_func |= eind->is_func;
3853 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 3854 edir->tls_mask |= eind->tls_mask;
6349e628 3855
81848ca0 3856 /* If called to transfer flags for a weakdef during processing
f5385ebf 3857 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 3858 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 3859 if (!(ELIMINATE_COPY_RELOCS
3860 && eind->elf.root.type != bfd_link_hash_indirect
3861 && edir->elf.dynamic_adjusted))
3862 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 3863
f5385ebf
AM		 3864 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3865 edir->elf.ref_regular |= eind->elf.ref_regular;
3866 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3867 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 3868
3869 /* If we were called to copy over info for a weak sym, that's all. */
3870 if (eind->elf.root.type != bfd_link_hash_indirect)
3871 return;
3872
81848ca0
AM		 3873 /* Copy over got entries that we may have already seen to the
3874 symbol which just became indirect. */
411e1bfb
AM		 3875 if (eind->elf.got.glist != NULL)
3876 {
3877 if (edir->elf.got.glist != NULL)
3878 {
3879 struct got_entry **entp;
3880 struct got_entry *ent;
3881
3882 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3883 {
3884 struct got_entry *dent;
3885
3886 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3887 if (dent->addend == ent->addend
e717da7e 3888 && dent->owner == ent->owner
411e1bfb
AM		 3889 && dent->tls_type == ent->tls_type)
3890 {
3891 dent->got.refcount += ent->got.refcount;
3892 *entp = ent->next;
3893 break;
3894 }
3895 if (dent == NULL)
3896 entp = &ent->next;
3897 }
3898 *entp = edir->elf.got.glist;
3899 }
3900
3901 edir->elf.got.glist = eind->elf.got.glist;
3902 eind->elf.got.glist = NULL;
3903 }
3904
3905 /* And plt entries. */
40d16e0b 3906 move_plt_plist (eind, edir);
411e1bfb 3907
411e1bfb
AM		 3908 if (edir->elf.dynindx == -1)
3909 {
3910 edir->elf.dynindx = eind->elf.dynindx;
3911 edir->elf.dynstr_index = eind->elf.dynstr_index;
3912 eind->elf.dynindx = -1;
3913 eind->elf.dynstr_index = 0;
3914 }
3915 else
3916 BFD_ASSERT (eind->elf.dynindx == -1);
3917}
3918
8387904d
AM		 3919/* Find the function descriptor hash entry from the given function code
3920 hash entry FH. Link the entries via their OH fields. */
3921
3922static struct ppc_link_hash_entry *
3923get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3924{
3925 struct ppc_link_hash_entry *fdh = fh->oh;
3926
3927 if (fdh == NULL)
3928 {
3929 const char *fd_name = fh->elf.root.root.string + 1;
3930
3931 fdh = (struct ppc_link_hash_entry *)
3932 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3933 if (fdh != NULL)
3934 {
3935 fdh->is_func_descriptor = 1;
3936 fdh->oh = fh;
3937 fh->is_func = 1;
3938 fh->oh = fdh;
3939 }
3940 }
3941
3942 return fdh;
3943}
3944
bb700d78
AM		 3945/* Make a fake function descriptor sym for the code sym FH. */
3946
3947static struct ppc_link_hash_entry *
3948make_fdh (struct bfd_link_info *info,
908b32fc 3949 struct ppc_link_hash_entry *fh)
bb700d78
AM		 3950{
3951 bfd *abfd;
3952 asymbol *newsym;
3953 struct bfd_link_hash_entry *bh;
3954 struct ppc_link_hash_entry *fdh;
3955
3956 abfd = fh->elf.root.u.undef.abfd;
3957 newsym = bfd_make_empty_symbol (abfd);
3958 newsym->name = fh->elf.root.root.string + 1;
3959 newsym->section = bfd_und_section_ptr;
3960 newsym->value = 0;
908b32fc 3961 newsym->flags = BSF_WEAK;
bb700d78
AM		 3962
3963 bh = NULL;
3964 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3965 newsym->flags, newsym->section,
3966 newsym->value, NULL, FALSE, FALSE,
3967 &bh))
3968 return NULL;
3969
3970 fdh = (struct ppc_link_hash_entry *) bh;
3971 fdh->elf.non_elf = 0;
908b32fc
AM		 3972 fdh->fake = 1;
3973 fdh->is_func_descriptor = 1;
3974 fdh->oh = fh;
3975 fh->is_func = 1;
3976 fh->oh = fdh;
bb700d78
AM		 3977 return fdh;
3978}
3979
8387904d
AM		 3980/* Hacks to support old ABI code.
3981 When making function calls, old ABI code references function entry
3982 points (dot symbols), while new ABI code references the function
3983 descriptor symbol. We need to make any combination of reference and
3984 definition work together, without breaking archive linking.
3985
3986 For a defined function "foo" and an undefined call to "bar":
3987 An old object defines "foo" and ".foo", references ".bar" (possibly
3988 "bar" too).
3989 A new object defines "foo" and references "bar".
3990
3991 A new object thus has no problem with its undefined symbols being
3992 satisfied by definitions in an old object. On the other hand, the
3993 old object won't have ".bar" satisfied by a new object. */
3994
3995/* Fix function descriptor symbols defined in .opd sections to be
3996 function type. */
555cd476
AM		 3997
3998static bfd_boolean
3999ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4000 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4001 Elf_Internal_Sym *isym,
4002 const char **name ATTRIBUTE_UNUSED,
4003 flagword *flags ATTRIBUTE_UNUSED,
4004 asection **sec,
4005 bfd_vma *value ATTRIBUTE_UNUSED)
4006{
8843416a
AM		 4007 if (*sec != NULL
4008 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476
AM		 4009 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4010 return TRUE;
4011}
4012
8387904d 4013/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4014 inclusion of a new ABI object archive that defines "bar".
4015 NAME is a symbol defined in an archive. Return a symbol in the hash
4016 table that might be satisfied by the archive symbols. */
8387904d
AM		 4017
4018static struct elf_link_hash_entry *
4019ppc64_elf_archive_symbol_lookup (bfd *abfd,
4020 struct bfd_link_info *info,
4021 const char *name)
4022{
4023 struct elf_link_hash_entry *h;
4024 char *dot_name;
4025 size_t len;
4026
4027 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4028 if (h != NULL
4029 /* Don't return this sym if it is a fake function descriptor
4030 created by add_symbol_adjust. */
4031 && !(h->root.type == bfd_link_hash_undefweak
4032 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4033 return h;
4034
4035 if (name[0] == '.')
4036 return h;
4037
4038 len = strlen (name);
4039 dot_name = bfd_alloc (abfd, len + 2);
4040 if (dot_name == NULL)
4041 return (struct elf_link_hash_entry *) 0 - 1;
4042 dot_name[0] = '.';
4043 memcpy (dot_name + 1, name, len + 1);
4044 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4045 bfd_release (abfd, dot_name);
4046 return h;
4047}
4048
4049/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4050 new ABI object defines "bar". Well, at least, undefined dot symbols
4051 are made weak. This stops later archive searches from including an
4052 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4053 prevents the linker complaining about undefined symbols.
4054 We also check and correct mismatched symbol visibility here. The
4055 most restrictive visibility of the function descriptor and the
4056 function entry symbol is used. */
8387904d 4057
bb700d78
AM		 4058struct add_symbol_adjust_data
4059{
4060 struct bfd_link_info *info;
4061 bfd_boolean ok;
4062};
4063
8387904d
AM		 4064static bfd_boolean
4065add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4066{
bb700d78 4067 struct add_symbol_adjust_data *data;
8387904d 4068 struct ppc_link_hash_table *htab;
99877b66 4069 struct ppc_link_hash_entry *eh;
8387904d
AM		 4070 struct ppc_link_hash_entry *fdh;
4071
4072 if (h->root.type == bfd_link_hash_indirect)
4073 return TRUE;
4074
4075 if (h->root.type == bfd_link_hash_warning)
4076 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4077
35b0ce59 4078 if (h->root.root.string[0] != '.')
8387904d
AM		 4079 return TRUE;
4080
bb700d78
AM		 4081 data = inf;
4082 htab = ppc_hash_table (data->info);
99877b66
AM		 4083 eh = (struct ppc_link_hash_entry *) h;
4084 fdh = get_fdh (eh, htab);
bb700d78 4085 if (fdh == NULL
c4f68ce3 4086 && !data->info->relocatable
bb700d78
AM		 4087 && (eh->elf.root.type == bfd_link_hash_undefined
4088 || eh->elf.root.type == bfd_link_hash_undefweak)
4089 && eh->elf.ref_regular)
4090 {
4091 /* Make an undefweak function descriptor sym, which is enough to
4092 pull in an --as-needed shared lib, but won't cause link
4093 errors. Archives are handled elsewhere. */
908b32fc 4094 fdh = make_fdh (data->info, eh);
bb700d78
AM		 4095 if (fdh == NULL)
4096 data->ok = FALSE;
4097 else
4098 fdh->elf.ref_regular = 1;
4099 }
c4f68ce3
AM		 4100 else if (fdh != NULL
4101 && (fdh->elf.root.type == bfd_link_hash_defined
4102 || fdh->elf.root.type == bfd_link_hash_defweak))
8387904d 4103 {
35b0ce59
AM		 4104 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4105 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4106 if (entry_vis < descr_vis)
4107 fdh->elf.other += entry_vis - descr_vis;
4108 else if (entry_vis > descr_vis)
4109 eh->elf.other += descr_vis - entry_vis;
4110
c4f68ce3 4111 if (eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4112 {
4113 eh->elf.root.type = bfd_link_hash_undefweak;
4114 eh->was_undefined = 1;
4115 htab->twiddled_syms = 1;
4116 }
8387904d 4117 }
99877b66 4118
8387904d
AM		 4119 return TRUE;
4120}
4121
4122static bfd_boolean
4123ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4124 struct bfd_link_info *info)
4125{
99877b66 4126 struct ppc_link_hash_table *htab;
bb700d78 4127 struct add_symbol_adjust_data data;
99877b66
AM		 4128
4129 htab = ppc_hash_table (info);
ee75fd95 4130 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM		 4131 return TRUE;
4132
bb700d78
AM		 4133 data.info = info;
4134 data.ok = TRUE;
4135 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
99877b66
AM		 4136
4137 /* We need to fix the undefs list for any syms we have twiddled to
4138 undef_weak. */
4139 if (htab->twiddled_syms)
4140 {
77cfaee6 4141 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4142 htab->twiddled_syms = 0;
4143 }
bb700d78 4144 return data.ok;
8387904d
AM		 4145}
4146
411e1bfb 4147static bfd_boolean
4ce794b7
AM		 4148update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4149 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4150{
4151 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4152 char *local_got_tls_masks;
411e1bfb
AM		 4153
4154 if (local_got_ents == NULL)
4155 {
4156 bfd_size_type size = symtab_hdr->sh_info;
4157
e7b938ca 4158 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4159 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4160 if (local_got_ents == NULL)
4161 return FALSE;
4162 elf_local_got_ents (abfd) = local_got_ents;
4163 }
4164
4165 if ((tls_type & TLS_EXPLICIT) == 0)
4166 {
4167 struct got_entry *ent;
4168
4169 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4170 if (ent->addend == r_addend
4171 && ent->owner == abfd
4172 && ent->tls_type == tls_type)
411e1bfb
AM		 4173 break;
4174 if (ent == NULL)
4175 {
4176 bfd_size_type amt = sizeof (*ent);
4ce794b7 4177 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4178 if (ent == NULL)
4179 return FALSE;
4180 ent->next = local_got_ents[r_symndx];
4181 ent->addend = r_addend;
e717da7e 4182 ent->owner = abfd;
411e1bfb
AM		 4183 ent->tls_type = tls_type;
4184 ent->got.refcount = 0;
4185 local_got_ents[r_symndx] = ent;
4186 }
4187 ent->got.refcount += 1;
4188 }
4189
e7b938ca
AM		 4190 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4191 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4192 return TRUE;
65f38f15
AM		 4193}
4194
411e1bfb 4195static bfd_boolean
4ce794b7 4196update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4197{
411e1bfb 4198 struct plt_entry *ent;
1e2f5b6e 4199
411e1bfb
AM		 4200 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4201 if (ent->addend == addend)
4202 break;
4203 if (ent == NULL)
1e2f5b6e 4204 {
411e1bfb 4205 bfd_size_type amt = sizeof (*ent);
4ce794b7 4206 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4207 if (ent == NULL)
4208 return FALSE;
4209 ent->next = eh->elf.plt.plist;
4210 ent->addend = addend;
4211 ent->plt.refcount = 0;
4212 eh->elf.plt.plist = ent;
1e2f5b6e 4213 }
411e1bfb 4214 ent->plt.refcount += 1;
f5385ebf 4215 eh->elf.needs_plt = 1;
411e1bfb 4216 eh->is_func = 1;
b34976b6 4217 return TRUE;
1e2f5b6e
AM		 4218}
4219
5bd4f169 4220/* Look through the relocs for a section during the first phase, and
65f38f15 4221 calculate needed space in the global offset table, procedure
5d1634d7 4222 linkage table, and dynamic reloc sections. */
5bd4f169 4223
b34976b6 4224static bfd_boolean
4ce794b7
AM		 4225ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4226 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4227{
65f38f15 4228 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4229 Elf_Internal_Shdr *symtab_hdr;
4230 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4231 const Elf_Internal_Rela *rel;
4232 const Elf_Internal_Rela *rel_end;
5bd4f169 4233 asection *sreloc;
1e2f5b6e 4234 asection **opd_sym_map;
5bd4f169 4235
1049f94e 4236 if (info->relocatable)
b34976b6 4237 return TRUE;
5bd4f169 4238
680a3378
AM		 4239 /* Don't do anything special with non-loaded, non-alloced sections.
4240 In particular, any relocs in such sections should not affect GOT
4241 and PLT reference counting (ie. we don't allow them to create GOT
4242 or PLT entries), there's no possibility or desire to optimize TLS
4243 relocs, and there's not much point in propagating relocs to shared
4244 libs that the dynamic linker won't relocate. */
4245 if ((sec->flags & SEC_ALLOC) == 0)
4246 return TRUE;
4247
65f38f15 4248 htab = ppc_hash_table (info);
5bd4f169 4249 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 4250
4251 sym_hashes = elf_sym_hashes (abfd);
4252 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4253 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4254 - symtab_hdr->sh_info);
5bd4f169
AM		 4255
4256 sreloc = NULL;
1e2f5b6e
AM		 4257 opd_sym_map = NULL;
4258 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4259 {
4260 /* Garbage collection needs some extra help with .opd sections.
4261 We don't want to necessarily keep everything referenced by
4262 relocs in .opd, as that would keep all functions. Instead,
4263 if we reference an .opd symbol (a function descriptor), we
4264 want to keep the function code symbol's section. This is
4265 easy for global symbols, but for local syms we need to keep
4266 information about the associated function section. Later, if
4267 edit_opd deletes entries, we'll use this array to adjust
4268 local syms in .opd. */
4269 union opd_info {
4270 asection *func_section;
4271 long entry_adjust;
4272 };
4273 bfd_size_type amt;
4274
3f764659 4275 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4276 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4277 if (opd_sym_map == NULL)
b34976b6 4278 return FALSE;
f0abc2a1 4279 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
1e2f5b6e 4280 }
5bd4f169 4281
82bd7b59
AM		 4282 if (htab->sfpr == NULL
4283 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4284 return FALSE;
82bd7b59 4285
5bd4f169
AM		 4286 rel_end = relocs + sec->reloc_count;
4287 for (rel = relocs; rel < rel_end; rel++)
4288 {
4289 unsigned long r_symndx;
4290 struct elf_link_hash_entry *h;
04c9666a 4291 enum elf_ppc64_reloc_type r_type;
411e1bfb 4292 int tls_type = 0;
5bd4f169
AM		 4293
4294 r_symndx = ELF64_R_SYM (rel->r_info);
4295 if (r_symndx < symtab_hdr->sh_info)
4296 h = NULL;
4297 else
4298 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4299
4ce794b7 4300 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4301 switch (r_type)
5bd4f169 4302 {
411e1bfb
AM		 4303 case R_PPC64_GOT_TLSLD16:
4304 case R_PPC64_GOT_TLSLD16_LO:
4305 case R_PPC64_GOT_TLSLD16_HI:
4306 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4307 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4308 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4309 goto dogottls;
4310
4311 case R_PPC64_GOT_TLSGD16:
4312 case R_PPC64_GOT_TLSGD16_LO:
4313 case R_PPC64_GOT_TLSGD16_HI:
4314 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4315 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4316 goto dogottls;
4317
4318 case R_PPC64_GOT_TPREL16_DS:
4319 case R_PPC64_GOT_TPREL16_LO_DS:
4320 case R_PPC64_GOT_TPREL16_HI:
4321 case R_PPC64_GOT_TPREL16_HA:
4322 if (info->shared)
4323 info->flags |= DF_STATIC_TLS;
4324 tls_type = TLS_TLS | TLS_TPREL;
4325 goto dogottls;
4326
4327 case R_PPC64_GOT_DTPREL16_DS:
4328 case R_PPC64_GOT_DTPREL16_LO_DS:
4329 case R_PPC64_GOT_DTPREL16_HI:
4330 case R_PPC64_GOT_DTPREL16_HA:
4331 tls_type = TLS_TLS | TLS_DTPREL;
4332 dogottls:
4333 sec->has_tls_reloc = 1;
4334 /* Fall thru */
4335
5bd4f169 4336 case R_PPC64_GOT16:
5bd4f169 4337 case R_PPC64_GOT16_DS:
65f38f15
AM		 4338 case R_PPC64_GOT16_HA:
4339 case R_PPC64_GOT16_HI:
4340 case R_PPC64_GOT16_LO:
5bd4f169 4341 case R_PPC64_GOT16_LO_DS:
65f38f15 4342 /* This symbol requires a global offset table entry. */
4c52953f 4343 sec->has_toc_reloc = 1;
e717da7e
AM		 4344 if (ppc64_elf_tdata (abfd)->got == NULL
4345 && !create_got_section (abfd, info))
b34976b6 4346 return FALSE;
5bd4f169
AM		 4347
4348 if (h != NULL)
4349 {
411e1bfb
AM		 4350 struct ppc_link_hash_entry *eh;
4351 struct got_entry *ent;
65f38f15 4352
411e1bfb
AM		 4353 eh = (struct ppc_link_hash_entry *) h;
4354 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4355 if (ent->addend == rel->r_addend
e717da7e 4356 && ent->owner == abfd
411e1bfb
AM		 4357 && ent->tls_type == tls_type)
4358 break;
4359 if (ent == NULL)
5bd4f169 4360 {
411e1bfb 4361 bfd_size_type amt = sizeof (*ent);
4ce794b7 4362 ent = bfd_alloc (abfd, amt);
411e1bfb 4363 if (ent == NULL)
b34976b6 4364 return FALSE;
411e1bfb
AM		 4365 ent->next = eh->elf.got.glist;
4366 ent->addend = rel->r_addend;
e717da7e 4367 ent->owner = abfd;
411e1bfb
AM		 4368 ent->tls_type = tls_type;
4369 ent->got.refcount = 0;
4370 eh->elf.got.glist = ent;
5bd4f169 4371 }
411e1bfb 4372 ent->got.refcount += 1;
e7b938ca 4373 eh->tls_mask |= tls_type;
5bd4f169 4374 }
411e1bfb
AM		 4375 else
4376 /* This is a global offset table entry for a local symbol. */
4377 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4378 rel->r_addend, tls_type))
4379 return FALSE;
5bd4f169
AM		 4380 break;
4381
5bd4f169 4382 case R_PPC64_PLT16_HA:
65f38f15
AM		 4383 case R_PPC64_PLT16_HI:
4384 case R_PPC64_PLT16_LO:
4385 case R_PPC64_PLT32:
4386 case R_PPC64_PLT64:
5bd4f169 4387 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4388 actually build the entry in adjust_dynamic_symbol,
4389 because this might be a case of linking PIC code without
4390 linking in any dynamic objects, in which case we don't
4391 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4392 if (h == NULL)
4393 {
4394 /* It does not make sense to have a procedure linkage
3fad3c7c 4395 table entry for a local symbol. */
5bd4f169 4396 bfd_set_error (bfd_error_bad_value);
b34976b6 4397 return FALSE;
5bd4f169 4398 }
411e1bfb
AM		 4399 else
4400 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4401 rel->r_addend))
4402 return FALSE;
5bd4f169
AM		 4403 break;
4404
4405 /* The following relocations don't need to propagate the
4406 relocation if linking a shared object since they are
4407 section relative. */
4408 case R_PPC64_SECTOFF:
4409 case R_PPC64_SECTOFF_LO:
4410 case R_PPC64_SECTOFF_HI:
4411 case R_PPC64_SECTOFF_HA:
4412 case R_PPC64_SECTOFF_DS:
4413 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4414 case R_PPC64_DTPREL16:
4415 case R_PPC64_DTPREL16_LO:
4416 case R_PPC64_DTPREL16_HI:
4417 case R_PPC64_DTPREL16_HA:
4418 case R_PPC64_DTPREL16_DS:
4419 case R_PPC64_DTPREL16_LO_DS:
4420 case R_PPC64_DTPREL16_HIGHER:
4421 case R_PPC64_DTPREL16_HIGHERA:
4422 case R_PPC64_DTPREL16_HIGHEST:
4423 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4424 break;
4425
ad8e1ba5
AM		 4426 /* Nor do these. */
4427 case R_PPC64_TOC16:
4428 case R_PPC64_TOC16_LO:
4429 case R_PPC64_TOC16_HI:
4430 case R_PPC64_TOC16_HA:
4431 case R_PPC64_TOC16_DS:
4432 case R_PPC64_TOC16_LO_DS:
4c52953f 4433 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4434 break;
4435
5bd4f169
AM		 4436 /* This relocation describes the C++ object vtable hierarchy.
4437 Reconstruct it for later use during GC. */
4438 case R_PPC64_GNU_VTINHERIT:
c152c796 4439 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4440 return FALSE;
5bd4f169
AM		 4441 break;
4442
4443 /* This relocation describes which C++ vtable entries are actually
4444 used. Record for later use during GC. */
4445 case R_PPC64_GNU_VTENTRY:
c152c796 4446 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4447 return FALSE;
5bd4f169
AM		 4448 break;
4449
721956f4
AM		 4450 case R_PPC64_REL14:
4451 case R_PPC64_REL14_BRTAKEN:
4452 case R_PPC64_REL14_BRNTAKEN:
4453 htab->has_14bit_branch = 1;
4454 /* Fall through. */
4455
5d1634d7 4456 case R_PPC64_REL24:
8387904d 4457 if (h != NULL)
5d1634d7
AM		 4458 {
4459 /* We may need a .plt entry if the function this reloc
4460 refers to is in a shared lib. */
411e1bfb
AM		 4461 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4462 rel->r_addend))
4463 return FALSE;
8387904d
AM		 4464 if (h == &htab->tls_get_addr->elf
4465 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4466 sec->has_tls_reloc = 1;
8387904d
AM		 4467 else if (htab->tls_get_addr == NULL
4468 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
a48ebf4d
AM		 4469 && (h->root.root.string[15] == 0
4470 || h->root.root.string[15] == '@'))
411e1bfb 4471 {
8387904d
AM		 4472 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4473 sec->has_tls_reloc = 1;
4474 }
4475 else if (htab->tls_get_addr_fd == NULL
4476 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4477 && (h->root.root.string[14] == 0
4478 || h->root.root.string[14] == '@'))
4479 {
4480 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4481 sec->has_tls_reloc = 1;
4482 }
4483 }
4484 break;
4485
4486 case R_PPC64_TPREL64:
4487 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4488 if (info->shared)
4489 info->flags |= DF_STATIC_TLS;
4490 goto dotlstoc;
4491
4492 case R_PPC64_DTPMOD64:
4493 if (rel + 1 < rel_end
4494 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4495 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4496 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4497 else
951fd09b 4498 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4499 goto dotlstoc;
4500
4501 case R_PPC64_DTPREL64:
4502 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4503 if (rel != relocs
4504 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4505 && rel[-1].r_offset == rel->r_offset - 8)
4506 /* This is the second reloc of a dtpmod, dtprel pair.
4507 Don't mark with TLS_DTPREL. */
4508 goto dodyn;
4509
4510 dotlstoc:
4511 sec->has_tls_reloc = 1;
4512 if (h != NULL)
4513 {
4514 struct ppc_link_hash_entry *eh;
4515 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4516 eh->tls_mask |= tls_type;
411e1bfb
AM		 4517 }
4518 else
4519 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4520 rel->r_addend, tls_type))
4521 return FALSE;
4522
4523 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4524 {
e7b938ca 4525 /* One extra to simplify get_tls_mask. */
eea6121a 4526 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4ce794b7 4527 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
411e1bfb
AM		 4528 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4529 return FALSE;
4530 }
4531 BFD_ASSERT (rel->r_offset % 8 == 0);
4532 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4533
4534 /* Mark the second slot of a GD or LD entry.
4535 -1 to indicate GD and -2 to indicate LD. */
4536 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4537 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4538 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4539 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4540 goto dodyn;
4541
4542 case R_PPC64_TPREL16:
4543 case R_PPC64_TPREL16_LO:
4544 case R_PPC64_TPREL16_HI:
4545 case R_PPC64_TPREL16_HA:
4546 case R_PPC64_TPREL16_DS:
4547 case R_PPC64_TPREL16_LO_DS:
4548 case R_PPC64_TPREL16_HIGHER:
4549 case R_PPC64_TPREL16_HIGHERA:
4550 case R_PPC64_TPREL16_HIGHEST:
4551 case R_PPC64_TPREL16_HIGHESTA:
4552 if (info->shared)
4553 {
4554 info->flags |= DF_STATIC_TLS;
4555 goto dodyn;
5d1634d7
AM		 4556 }
4557 break;
4558
e86ce104 4559 case R_PPC64_ADDR64:
1e2f5b6e 4560 if (opd_sym_map != NULL
1e2f5b6e 4561 && rel + 1 < rel_end
4ce794b7 4562 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4563 {
8387904d
AM		 4564 if (h != NULL)
4565 {
4566 if (h->root.root.string[0] == '.'
4567 && h->root.root.string[1] != 0
4568 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4569 ;
4570 else
4571 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4572 }
4573 else
4574 {
4575 asection *s;
1e2f5b6e 4576
8387904d
AM		 4577 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4578 r_symndx);
4579 if (s == NULL)
4580 return FALSE;
4581 else if (s != sec)
3f764659 4582 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4583 }
1e2f5b6e 4584 }
e86ce104
AM		 4585 /* Fall through. */
4586
04c9666a 4587 case R_PPC64_REL30:
5bd4f169 4588 case R_PPC64_REL32:
04c9666a 4589 case R_PPC64_REL64:
65f38f15
AM		 4590 case R_PPC64_ADDR14:
4591 case R_PPC64_ADDR14_BRNTAKEN:
4592 case R_PPC64_ADDR14_BRTAKEN:
4593 case R_PPC64_ADDR16:
4594 case R_PPC64_ADDR16_DS:
4595 case R_PPC64_ADDR16_HA:
4596 case R_PPC64_ADDR16_HI:
4597 case R_PPC64_ADDR16_HIGHER:
4598 case R_PPC64_ADDR16_HIGHERA:
4599 case R_PPC64_ADDR16_HIGHEST:
4600 case R_PPC64_ADDR16_HIGHESTA:
4601 case R_PPC64_ADDR16_LO:
4602 case R_PPC64_ADDR16_LO_DS:
4603 case R_PPC64_ADDR24:
65f38f15 4604 case R_PPC64_ADDR32:
65f38f15
AM		 4605 case R_PPC64_UADDR16:
4606 case R_PPC64_UADDR32:
4607 case R_PPC64_UADDR64:
5bd4f169 4608 case R_PPC64_TOC:
81848ca0
AM		 4609 if (h != NULL && !info->shared)
4610 /* We may need a copy reloc. */
f5385ebf 4611 h->non_got_ref = 1;
81848ca0 4612
41bd81ab 4613 /* Don't propagate .opd relocs. */
1e2f5b6e 4614 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4615 break;
e86ce104 4616
65f38f15
AM		 4617 /* If we are creating a shared library, and this is a reloc
4618 against a global symbol, or a non PC relative reloc
4619 against a local symbol, then we need to copy the reloc
4620 into the shared library. However, if we are linking with
4621 -Bsymbolic, we do not need to copy a reloc against a
4622 global symbol which is defined in an object we are
4623 including in the link (i.e., DEF_REGULAR is set). At
4624 this point we have not seen all the input files, so it is
4625 possible that DEF_REGULAR is not set now but will be set
4626 later (it is never cleared). In case of a weak definition,
4627 DEF_REGULAR may be cleared later by a strong definition in
4628 a shared library. We account for that possibility below by
f4656909 4629 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4630 table entry. A similar situation occurs when creating
4631 shared libraries and symbol visibility changes render the
4632 symbol local.
4633
4634 If on the other hand, we are creating an executable, we
4635 may need to keep relocations for symbols satisfied by a
4636 dynamic library if we manage to avoid copy relocs for the
4637 symbol. */
411e1bfb 4638 dodyn:
65f38f15 4639 if ((info->shared
411e1bfb 4640 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM		 4641 || (h != NULL
4642 && (! info->symbolic
4643 || h->root.type == bfd_link_hash_defweak
f5385ebf 4644 || !h->def_regular))))
f4656909
AM		 4645 || (ELIMINATE_COPY_RELOCS
4646 && !info->shared
65f38f15
AM		 4647 && h != NULL
4648 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4649 || !h->def_regular)))
5bd4f169 4650 {
ec338859
AM		 4651 struct ppc_dyn_relocs *p;
4652 struct ppc_dyn_relocs **head;
4653
65f38f15
AM		 4654 /* We must copy these reloc types into the output file.
4655 Create a reloc section in dynobj and make room for
4656 this reloc. */
5bd4f169
AM		 4657 if (sreloc == NULL)
4658 {
4659 const char *name;
65f38f15 4660 bfd *dynobj;
5bd4f169
AM		 4661
4662 name = (bfd_elf_string_from_elf_section
4663 (abfd,
4664 elf_elfheader (abfd)->e_shstrndx,
4665 elf_section_data (sec)->rel_hdr.sh_name));
4666 if (name == NULL)
b34976b6 4667 return FALSE;
5bd4f169 4668
65f38f15
AM		 4669 if (strncmp (name, ".rela", 5) != 0
4670 || strcmp (bfd_get_section_name (abfd, sec),
4671 name + 5) != 0)
4672 {
4673 (*_bfd_error_handler)
d003868e
AM		 4674 (_("%B: bad relocation section name `%s\'"),
4675 abfd, name);
5d1634d7 4676 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 4677 }
4678
65f38f15 4679 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4680 sreloc = bfd_get_section_by_name (dynobj, name);
4681 if (sreloc == NULL)
4682 {
4683 flagword flags;
4684
4685 sreloc = bfd_make_section (dynobj, name);
4686 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4687 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4688 if ((sec->flags & SEC_ALLOC) != 0)
4689 flags |= SEC_ALLOC | SEC_LOAD;
4690 if (sreloc == NULL
4691 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 4692 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4693 return FALSE;
5bd4f169 4694 }
65f38f15 4695 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 4696 }
4697
65f38f15
AM		 4698 /* If this is a global symbol, we count the number of
4699 relocations we need for this symbol. */
4700 if (h != NULL)
4701 {
ec338859 4702 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 4703 }
4704 else
4705 {
ec338859
AM		 4706 /* Track dynamic relocs needed for local syms too.
4707 We really need local syms available to do this
4708 easily. Oh well. */
4709
4710 asection *s;
4711 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4712 sec, r_symndx);
4713 if (s == NULL)
b34976b6 4714 return FALSE;
ec338859
AM		 4715
4716 head = ((struct ppc_dyn_relocs **)
4717 &elf_section_data (s)->local_dynrel);
65f38f15 4718 }
ec338859
AM		 4719
4720 p = *head;
4721 if (p == NULL || p->sec != sec)
4722 {
4ce794b7 4723 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4724 if (p == NULL)
b34976b6 4725 return FALSE;
ec338859
AM		 4726 p->next = *head;
4727 *head = p;
4728 p->sec = sec;
4729 p->count = 0;
4730 p->pc_count = 0;
4731 }
4732
4733 p->count += 1;
411e1bfb 4734 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4735 p->pc_count += 1;
65f38f15 4736 }
5bd4f169 4737 break;
65f38f15
AM		 4738
4739 default:
96e0dda4 4740 break;
5bd4f169
AM		 4741 }
4742 }
4743
b34976b6 4744 return TRUE;
5bd4f169
AM		 4745}
4746
8387904d
AM		 4747/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4748 of the code entry point, and its section. */
4749
4750static bfd_vma
4751opd_entry_value (asection *opd_sec,
4752 bfd_vma offset,
4753 asection **code_sec,
4754 bfd_vma *code_off)
4755{
4756 bfd *opd_bfd = opd_sec->owner;
8860955f 4757 Elf_Internal_Rela *relocs;
8387904d 4758 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4759 bfd_vma val;
8387904d 4760
4b85d634
AM		 4761 /* No relocs implies we are linking a --just-symbols object. */
4762 if (opd_sec->reloc_count == 0)
4763 {
4764 bfd_vma val;
4765
4766 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4767 return (bfd_vma) -1;
4768
4769 if (code_sec != NULL)
4770 {
4771 asection *sec, *likely = NULL;
4772 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4773 if (sec->vma <= val
4774 && (sec->flags & SEC_LOAD) != 0
4775 && (sec->flags & SEC_ALLOC) != 0)
4776 likely = sec;
4777 if (likely != NULL)
4778 {
4779 *code_sec = likely;
4780 if (code_off != NULL)
4781 *code_off = val - likely->vma;
4782 }
4783 }
4784 return val;
4785 }
4786
8860955f
AM		 4787 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4788 if (relocs == NULL)
4789 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4790
8387904d 4791 /* Go find the opd reloc at the sym address. */
8860955f 4792 lo = relocs;
8387904d
AM		 4793 BFD_ASSERT (lo != NULL);
4794 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4795 val = (bfd_vma) -1;
8387904d
AM		 4796 while (lo < hi)
4797 {
4798 look = lo + (hi - lo) / 2;
4799 if (look->r_offset < offset)
4800 lo = look + 1;
4801 else if (look->r_offset > offset)
4802 hi = look;
4803 else
4804 {
4805 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4806 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4807 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4808 {
4809 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 4810 asection *sec;
4811
4812 if (symndx < symtab_hdr->sh_info)
4813 {
4814 Elf_Internal_Sym *sym;
4815
4816 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4817 if (sym == NULL)
4818 {
4819 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4820 symtab_hdr->sh_info,
4821 0, NULL, NULL, NULL);
4822 if (sym == NULL)
645ea6a9 4823 break;
8387904d
AM		 4824 symtab_hdr->contents = (bfd_byte *) sym;
4825 }
4826
4827 sym += symndx;
4828 val = sym->st_value;
4829 sec = NULL;
4830 if ((sym->st_shndx != SHN_UNDEF
4831 && sym->st_shndx < SHN_LORESERVE)
4832 || sym->st_shndx > SHN_HIRESERVE)
4833 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4834 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4835 }
4836 else
4837 {
4838 struct elf_link_hash_entry **sym_hashes;
4839 struct elf_link_hash_entry *rh;
4840
4841 sym_hashes = elf_sym_hashes (opd_bfd);
4842 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4843 while (rh->root.type == bfd_link_hash_indirect
4844 || rh->root.type == bfd_link_hash_warning)
4845 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4846 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4847 || rh->root.type == bfd_link_hash_defweak);
4848 val = rh->root.u.def.value;
4849 sec = rh->root.u.def.section;
4850 }
4851 val += look->r_addend;
4852 if (code_off != NULL)
4853 *code_off = val;
4854 if (code_sec != NULL)
4855 *code_sec = sec;
4856 if (sec != NULL && sec->output_section != NULL)
4857 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 4858 }
4859 break;
4860 }
4861 }
645ea6a9 4862
645ea6a9 4863 return val;
8387904d
AM		 4864}
4865
5bd4f169
AM		 4866/* Return the section that should be marked against GC for a given
4867 relocation. */
4868
4869static asection *
4ce794b7 4870ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 4871 struct bfd_link_info *info,
4ce794b7
AM		 4872 Elf_Internal_Rela *rel,
4873 struct elf_link_hash_entry *h,
4874 Elf_Internal_Sym *sym)
5bd4f169 4875{
ccfa59ea
AM		 4876 asection *rsec;
4877
4878 /* First mark all our entry sym sections. */
4879 if (info->gc_sym_list != NULL)
4880 {
4881 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4882 struct bfd_sym_chain *sym = info->gc_sym_list;
4883
4884 info->gc_sym_list = NULL;
4885 do
4886 {
4887 struct ppc_link_hash_entry *eh;
4888
4889 eh = (struct ppc_link_hash_entry *)
4890 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4891 if (eh == NULL)
4892 continue;
4893 if (eh->elf.root.type != bfd_link_hash_defined
4894 && eh->elf.root.type != bfd_link_hash_defweak)
4895 continue;
4896
c4f68ce3
AM		 4897 if (eh->is_func_descriptor
4898 && (eh->oh->elf.root.type == bfd_link_hash_defined
4899 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4900 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM		 4901 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4902 && opd_entry_value (eh->elf.root.u.def.section,
4903 eh->elf.root.u.def.value,
4904 &rsec, NULL) != (bfd_vma) -1)
4905 ;
ccfa59ea
AM		 4906 else
4907 continue;
4908
4909 if (!rsec->gc_mark)
4910 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4911
4912 rsec = eh->elf.root.u.def.section;
4913 if (!rsec->gc_mark)
4914 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4915
4916 sym = sym->next;
4917 }
4918 while (sym != NULL);
4919 }
4920
4921 /* Syms return NULL if we're marking .opd, so we avoid marking all
4922 function sections, as all functions are referenced in .opd. */
4923 rsec = NULL;
4924 if (get_opd_info (sec) != NULL)
4925 return rsec;
1e2f5b6e 4926
5bd4f169
AM		 4927 if (h != NULL)
4928 {
04c9666a 4929 enum elf_ppc64_reloc_type r_type;
ccfa59ea 4930 struct ppc_link_hash_entry *eh;
a33d1f77 4931
4ce794b7 4932 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4933 switch (r_type)
5bd4f169
AM		 4934 {
4935 case R_PPC64_GNU_VTINHERIT:
4936 case R_PPC64_GNU_VTENTRY:
4937 break;
4938
4939 default:
4940 switch (h->root.type)
4941 {
4942 case bfd_link_hash_defined:
4943 case bfd_link_hash_defweak:
ccfa59ea 4944 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 4945 if (eh->oh != NULL
4946 && eh->oh->is_func_descriptor
4947 && (eh->oh->elf.root.type == bfd_link_hash_defined
4948 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 4949 eh = eh->oh;
1e2f5b6e
AM		 4950
4951 /* Function descriptor syms cause the associated
4952 function code sym section to be marked. */
c4f68ce3
AM		 4953 if (eh->is_func_descriptor
4954 && (eh->oh->elf.root.type == bfd_link_hash_defined
4955 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 4956 {
4957 /* They also mark their opd section. */
4958 if (!eh->elf.root.u.def.section->gc_mark)
4959 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4960 ppc64_elf_gc_mark_hook);
4961
4962 rsec = eh->oh->elf.root.u.def.section;
4963 }
8387904d
AM		 4964 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4965 && opd_entry_value (eh->elf.root.u.def.section,
4966 eh->elf.root.u.def.value,
4967 &rsec, NULL) != (bfd_vma) -1)
4968 {
4969 if (!eh->elf.root.u.def.section->gc_mark)
4970 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4971 ppc64_elf_gc_mark_hook);
4972 }
ccfa59ea 4973 else
1e2f5b6e
AM		 4974 rsec = h->root.u.def.section;
4975 break;
5bd4f169
AM		 4976
4977 case bfd_link_hash_common:
1e2f5b6e
AM		 4978 rsec = h->root.u.c.p->section;
4979 break;
5bd4f169
AM		 4980
4981 default:
4982 break;
4983 }
4984 }
4985 }
4986 else
4987 {
1e2f5b6e
AM		 4988 asection **opd_sym_section;
4989
4990 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 4991 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 4992 if (opd_sym_section != NULL)
ccfa59ea
AM		 4993 {
4994 if (!rsec->gc_mark)
4995 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4996
3f764659 4997 rsec = opd_sym_section[sym->st_value / 8];
ccfa59ea 4998 }
5bd4f169
AM		 4999 }
5000
1e2f5b6e 5001 return rsec;
5bd4f169
AM		 5002}
5003
65f38f15
AM		 5004/* Update the .got, .plt. and dynamic reloc reference counts for the
5005 section being removed. */
5bd4f169 5006
b34976b6 5007static bfd_boolean
4ce794b7
AM		 5008ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5009 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5010{
411e1bfb 5011 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5012 Elf_Internal_Shdr *symtab_hdr;
5013 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5014 struct got_entry **local_got_ents;
5bd4f169 5015 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5016
680a3378
AM		 5017 if ((sec->flags & SEC_ALLOC) == 0)
5018 return TRUE;
5019
ec338859
AM		 5020 elf_section_data (sec)->local_dynrel = NULL;
5021
411e1bfb 5022 htab = ppc_hash_table (info);
5bd4f169
AM		 5023 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5024 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5025 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5026
5027 relend = relocs + sec->reloc_count;
5028 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5029 {
5030 unsigned long r_symndx;
04c9666a 5031 enum elf_ppc64_reloc_type r_type;
58ac9f71 5032 struct elf_link_hash_entry *h = NULL;
411e1bfb 5033 char tls_type = 0;
5bd4f169 5034
a33d1f77 5035 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5036 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5037 if (r_symndx >= symtab_hdr->sh_info)
5038 {
5039 struct ppc_link_hash_entry *eh;
5040 struct ppc_dyn_relocs **pp;
5041 struct ppc_dyn_relocs *p;
5042
5043 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5044 while (h->root.type == bfd_link_hash_indirect
5045 || h->root.type == bfd_link_hash_warning)
5046 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5047 eh = (struct ppc_link_hash_entry *) h;
5048
5049 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5050 if (p->sec == sec)
5051 {
5052 /* Everything must go for SEC. */
5053 *pp = p->next;
5054 break;
5055 }
5056 }
5057
a33d1f77
AM		 5058 switch (r_type)
5059 {
411e1bfb
AM		 5060 case R_PPC64_GOT_TLSLD16:
5061 case R_PPC64_GOT_TLSLD16_LO:
5062 case R_PPC64_GOT_TLSLD16_HI:
5063 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5064 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5065 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5066 goto dogot;
5067
5068 case R_PPC64_GOT_TLSGD16:
5069 case R_PPC64_GOT_TLSGD16_LO:
5070 case R_PPC64_GOT_TLSGD16_HI:
5071 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5072 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5073 goto dogot;
5074
5075 case R_PPC64_GOT_TPREL16_DS:
5076 case R_PPC64_GOT_TPREL16_LO_DS:
5077 case R_PPC64_GOT_TPREL16_HI:
5078 case R_PPC64_GOT_TPREL16_HA:
5079 tls_type = TLS_TLS | TLS_TPREL;
5080 goto dogot;
5081
5082 case R_PPC64_GOT_DTPREL16_DS:
5083 case R_PPC64_GOT_DTPREL16_LO_DS:
5084 case R_PPC64_GOT_DTPREL16_HI:
5085 case R_PPC64_GOT_DTPREL16_HA:
5086 tls_type = TLS_TLS | TLS_DTPREL;
5087 goto dogot;
5088
a33d1f77
AM		 5089 case R_PPC64_GOT16:
5090 case R_PPC64_GOT16_DS:
5091 case R_PPC64_GOT16_HA:
5092 case R_PPC64_GOT16_HI:
5093 case R_PPC64_GOT16_LO:
5094 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5095 dogot:
5096 {
5097 struct got_entry *ent;
5098
58ac9f71
AM		 5099 if (h != NULL)
5100 ent = h->got.glist;
411e1bfb
AM		 5101 else
5102 ent = local_got_ents[r_symndx];
5103
5104 for (; ent != NULL; ent = ent->next)
5105 if (ent->addend == rel->r_addend
e717da7e 5106 && ent->owner == abfd
411e1bfb
AM		 5107 && ent->tls_type == tls_type)
5108 break;
5109 if (ent == NULL)
5110 abort ();
5111 if (ent->got.refcount > 0)
5112 ent->got.refcount -= 1;
5113 }
a33d1f77 5114 break;
65f38f15 5115
a33d1f77
AM		 5116 case R_PPC64_PLT16_HA:
5117 case R_PPC64_PLT16_HI:
5118 case R_PPC64_PLT16_LO:
5119 case R_PPC64_PLT32:
5120 case R_PPC64_PLT64:
721956f4
AM		 5121 case R_PPC64_REL14:
5122 case R_PPC64_REL14_BRNTAKEN:
5123 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5124 case R_PPC64_REL24:
58ac9f71 5125 if (h != NULL)
5d1634d7 5126 {
411e1bfb
AM		 5127 struct plt_entry *ent;
5128
411e1bfb
AM		 5129 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5130 if (ent->addend == rel->r_addend)
5131 break;
5132 if (ent == NULL)
5133 abort ();
5134 if (ent->plt.refcount > 0)
5135 ent->plt.refcount -= 1;
5d1634d7 5136 }
e86ce104 5137 break;
5d1634d7 5138
a33d1f77
AM		 5139 default:
5140 break;
5141 }
5142 }
b34976b6 5143 return TRUE;
5bd4f169
AM		 5144}
5145
deb0e272
AM		 5146/* The maximum size of .sfpr. */
5147#define SFPR_MAX (218*4)
5148
5149struct sfpr_def_parms
5150{
699733f6
AM		 5151 const char name[12];
5152 unsigned char lo, hi;
deb0e272
AM		 5153 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5154 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5155};
5156
5157/* Auto-generate _save*, _rest* functions in .sfpr. */
5158
5159static unsigned int
5160sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5161{
5162 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5163 unsigned int i;
5164 size_t len = strlen (parm->name);
5165 bfd_boolean writing = FALSE;
699733f6 5166 char sym[16];
deb0e272
AM		 5167
5168 memcpy (sym, parm->name, len);
5169 sym[len + 2] = 0;
5170
5171 for (i = parm->lo; i <= parm->hi; i++)
5172 {
5173 struct elf_link_hash_entry *h;
5174
5175 sym[len + 0] = i / 10 + '0';
5176 sym[len + 1] = i % 10 + '0';
5177 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5178 if (h != NULL
f5385ebf 5179 && !h->def_regular)
deb0e272
AM		 5180 {
5181 h->root.type = bfd_link_hash_defined;
5182 h->root.u.def.section = htab->sfpr;
5183 h->root.u.def.value = htab->sfpr->size;
5184 h->type = STT_FUNC;
f5385ebf 5185 h->def_regular = 1;
deb0e272
AM		 5186 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5187 writing = TRUE;
5188 if (htab->sfpr->contents == NULL)
5189 {
5190 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5191 if (htab->sfpr->contents == NULL)
5192 return FALSE;
5193 }
5194 }
5195 if (writing)
5196 {
5197 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5198 if (i != parm->hi)
5199 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5200 else
5201 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5202 htab->sfpr->size = p - htab->sfpr->contents;
5203 }
5204 }
5205
5206 return TRUE;
5207}
5208
5209static bfd_byte *
5210savegpr0 (bfd *abfd, bfd_byte *p, int r)
5211{
5212 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5213 return p + 4;
5214}
5215
5216static bfd_byte *
5217savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5218{
5219 p = savegpr0 (abfd, p, r);
5220 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5221 p = p + 4;
5222 bfd_put_32 (abfd, BLR, p);
5223 return p + 4;
5224}
5225
5226static bfd_byte *
5227restgpr0 (bfd *abfd, bfd_byte *p, int r)
5228{
5229 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5230 return p + 4;
5231}
5232
5233static bfd_byte *
5234restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5235{
5236 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5237 p = p + 4;
5238 p = restgpr0 (abfd, p, r);
5239 bfd_put_32 (abfd, MTLR_R0, p);
5240 p = p + 4;
5241 if (r == 29)
5242 {
5243 p = restgpr0 (abfd, p, 30);
5244 p = restgpr0 (abfd, p, 31);
5245 }
5246 bfd_put_32 (abfd, BLR, p);
5247 return p + 4;
5248}
5249
5250static bfd_byte *
5251savegpr1 (bfd *abfd, bfd_byte *p, int r)
5252{
5253 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5254 return p + 4;
5255}
5256
5257static bfd_byte *
5258savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5259{
5260 p = savegpr1 (abfd, p, r);
5261 bfd_put_32 (abfd, BLR, p);
5262 return p + 4;
5263}
5264
5265static bfd_byte *
5266restgpr1 (bfd *abfd, bfd_byte *p, int r)
5267{
5268 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5269 return p + 4;
5270}
5271
5272static bfd_byte *
5273restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5274{
5275 p = restgpr1 (abfd, p, r);
5276 bfd_put_32 (abfd, BLR, p);
5277 return p + 4;
5278}
5279
5280static bfd_byte *
5281savefpr (bfd *abfd, bfd_byte *p, int r)
5282{
5283 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5284 return p + 4;
5285}
5286
5287static bfd_byte *
5288savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5289{
5290 p = savefpr (abfd, p, r);
5291 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5292 p = p + 4;
5293 bfd_put_32 (abfd, BLR, p);
5294 return p + 4;
5295}
5296
5297static bfd_byte *
5298restfpr (bfd *abfd, bfd_byte *p, int r)
5299{
5300 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5301 return p + 4;
5302}
5303
5304static bfd_byte *
5305restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5306{
5307 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5308 p = p + 4;
5309 p = restfpr (abfd, p, r);
5310 bfd_put_32 (abfd, MTLR_R0, p);
5311 p = p + 4;
5312 if (r == 29)
5313 {
5314 p = restfpr (abfd, p, 30);
5315 p = restfpr (abfd, p, 31);
5316 }
5317 bfd_put_32 (abfd, BLR, p);
5318 return p + 4;
5319}
5320
5321static bfd_byte *
5322savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5323{
5324 p = savefpr (abfd, p, r);
5325 bfd_put_32 (abfd, BLR, p);
5326 return p + 4;
5327}
5328
5329static bfd_byte *
5330restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5331{
5332 p = restfpr (abfd, p, r);
5333 bfd_put_32 (abfd, BLR, p);
5334 return p + 4;
5335}
5336
5337static bfd_byte *
5338savevr (bfd *abfd, bfd_byte *p, int r)
5339{
5340 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5341 p = p + 4;
5342 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5343 return p + 4;
5344}
5345
5346static bfd_byte *
5347savevr_tail (bfd *abfd, bfd_byte *p, int r)
5348{
5349 p = savevr (abfd, p, r);
5350 bfd_put_32 (abfd, BLR, p);
5351 return p + 4;
5352}
5353
5354static bfd_byte *
5355restvr (bfd *abfd, bfd_byte *p, int r)
5356{
5357 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5358 p = p + 4;
5359 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5360 return p + 4;
5361}
5362
5363static bfd_byte *
5364restvr_tail (bfd *abfd, bfd_byte *p, int r)
5365{
5366 p = restvr (abfd, p, r);
5367 bfd_put_32 (abfd, BLR, p);
5368 return p + 4;
5369}
5370
e86ce104
AM		 5371/* Called via elf_link_hash_traverse to transfer dynamic linking
5372 information on function code symbol entries to their corresponding
5373 function descriptor symbol entries. */
deb0e272 5374
b34976b6 5375static bfd_boolean
4ce794b7 5376func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5377{
e86ce104 5378 struct bfd_link_info *info;
65f38f15 5379 struct ppc_link_hash_table *htab;
411e1bfb 5380 struct plt_entry *ent;
50bc7936
AM		 5381 struct ppc_link_hash_entry *fh;
5382 struct ppc_link_hash_entry *fdh;
5383 bfd_boolean force_local;
5bd4f169 5384
50bc7936
AM		 5385 fh = (struct ppc_link_hash_entry *) h;
5386 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5387 return TRUE;
e86ce104 5388
50bc7936
AM		 5389 if (fh->elf.root.type == bfd_link_hash_warning)
5390 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5391
4ce794b7 5392 info = inf;
65f38f15 5393 htab = ppc_hash_table (info);
5bd4f169 5394
c09bdfe5
AM		 5395 /* Resolve undefined references to dot-symbols as the value
5396 in the function descriptor, if we have one in a regular object.
5397 This is to satisfy cases like ".quad .foo". Calls to functions
5398 in dynamic objects are handled elsewhere. */
5399 if (fh->elf.root.type == bfd_link_hash_undefweak
5400 && fh->was_undefined
5401 && (fh->oh->elf.root.type == bfd_link_hash_defined
5402 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5403 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5404 && opd_entry_value (fh->oh->elf.root.u.def.section,
5405 fh->oh->elf.root.u.def.value,
5406 &fh->elf.root.u.def.section,
5407 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5408 {
5409 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5410 fh->elf.forced_local = 1;
c09bdfe5
AM		 5411 }
5412
e86ce104
AM		 5413 /* If this is a function code symbol, transfer dynamic linking
5414 information to the function descriptor symbol. */
50bc7936 5415 if (!fh->is_func)
b34976b6 5416 return TRUE;
e86ce104 5417
50bc7936 5418 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5419 if (ent->plt.refcount > 0)
5420 break;
50bc7936
AM		 5421 if (ent == NULL
5422 || fh->elf.root.root.string[0] != '.'
5423 || fh->elf.root.root.string[1] == '\0')
5424 return TRUE;
5bd4f169 5425
50bc7936
AM		 5426 /* Find the corresponding function descriptor symbol. Create it
5427 as undefined if necessary. */
5bd4f169 5428
50bc7936
AM		 5429 fdh = get_fdh (fh, htab);
5430 if (fdh != NULL)
5431 while (fdh->elf.root.type == bfd_link_hash_indirect
5432 || fdh->elf.root.type == bfd_link_hash_warning)
5433 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5434
50bc7936
AM		 5435 if (fdh == NULL
5436 && info->shared
5437 && (fh->elf.root.type == bfd_link_hash_undefined
5438 || fh->elf.root.type == bfd_link_hash_undefweak))
5439 {
908b32fc 5440 fdh = make_fdh (info, fh);
bb700d78
AM		 5441 if (fdh == NULL)
5442 return FALSE;
50bc7936 5443 }
648cca2c 5444
908b32fc
AM		 5445 /* Fake function descriptors are made undefweak. If the function
5446 code symbol is strong undefined, make the fake sym the same. */
5447
5448 if (fdh != NULL
5449 && fdh->fake
5450 && fdh->elf.root.type == bfd_link_hash_undefweak
5451 && fh->elf.root.type == bfd_link_hash_undefined)
5452 {
5453 fdh->elf.root.type = bfd_link_hash_undefined;
5454 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5455 }
5456
50bc7936 5457 if (fdh != NULL
f5385ebf 5458 && !fdh->elf.forced_local
50bc7936 5459 && (info->shared
f5385ebf
AM		 5460 || fdh->elf.def_dynamic
5461 || fdh->elf.ref_dynamic
50bc7936
AM		 5462 || (fdh->elf.root.type == bfd_link_hash_undefweak
5463 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5464 {
5465 if (fdh->elf.dynindx == -1)
c152c796 5466 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5467 return FALSE;
f5385ebf
AM		 5468 fdh->elf.ref_regular |= fh->elf.ref_regular;
5469 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5470 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5471 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5472 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5473 {
40d16e0b 5474 move_plt_plist (fh, fdh);
f5385ebf 5475 fdh->elf.needs_plt = 1;
e86ce104 5476 }
50bc7936 5477 fdh->is_func_descriptor = 1;
34814b9f
AM		 5478 fdh->oh = fh;
5479 fh->oh = fdh;
e86ce104
AM		 5480 }
5481
50bc7936
AM		 5482 /* Now that the info is on the function descriptor, clear the
5483 function code sym info. Any function code syms for which we
5484 don't have a definition in a regular file, we force local.
5485 This prevents a shared library from exporting syms that have
5486 been imported from another library. Function code syms that
5487 are really in the library we must leave global to prevent the
5488 linker dragging in a definition from a static library. */
5489 force_local
5490 = (info->shared
f5385ebf 5491 && (!fh->elf.def_regular
50bc7936 5492 || fdh == NULL
f5385ebf
AM		 5493 || !fdh->elf.def_regular
5494 || fdh->elf.forced_local));
50bc7936
AM		 5495 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5496
b34976b6 5497 return TRUE;
e86ce104 5498}
40b8271b 5499
e86ce104 5500/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5501 this hook to a) provide some gcc support functions, and b) transfer
5502 dynamic linking information gathered so far on function code symbol
5503 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5504
b34976b6 5505static bfd_boolean
4ce794b7
AM		 5506ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5507 struct bfd_link_info *info)
e86ce104
AM		 5508{
5509 struct ppc_link_hash_table *htab;
82bd7b59 5510 unsigned int i;
deb0e272
AM		 5511 const struct sfpr_def_parms funcs[] =
5512 {
5513 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5514 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5515 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5516 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5517 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5518 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5519 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5520 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5521 { "._savef", 14, 31, savefpr, savefpr1_tail },
5522 { "._restf", 14, 31, restfpr, restfpr1_tail },
5523 { "_savevr_", 20, 31, savevr, savevr_tail },
5524 { "_restvr_", 20, 31, restvr, restvr_tail }
5525 };
e86ce104
AM		 5526
5527 htab = ppc_hash_table (info);
82bd7b59
AM		 5528 if (htab->sfpr == NULL)
5529 /* We don't have any relocs. */
b34976b6 5530 return TRUE;
82bd7b59 5531
deb0e272
AM		 5532 /* Provide any missing _save* and _rest* functions. */
5533 htab->sfpr->size = 0;
5534 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5535 if (!sfpr_define (info, &funcs[i]))
5536 return FALSE;
82bd7b59 5537
4ce794b7 5538 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5539
eea6121a 5540 if (htab->sfpr->size == 0)
deb0e272 5541 _bfd_strip_section_from_output (info, htab->sfpr);
82bd7b59 5542
b34976b6 5543 return TRUE;
e86ce104
AM		 5544}
5545
5546/* Adjust a symbol defined by a dynamic object and referenced by a
5547 regular object. The current definition is in some section of the
5548 dynamic object, but we're not including those sections. We have to
5549 change the definition to something the rest of the link can
5550 understand. */
5551
b34976b6 5552static bfd_boolean
4ce794b7
AM		 5553ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5554 struct elf_link_hash_entry *h)
e86ce104
AM		 5555{
5556 struct ppc_link_hash_table *htab;
e86ce104
AM		 5557 asection *s;
5558 unsigned int power_of_two;
5559
5560 htab = ppc_hash_table (info);
5561
5562 /* Deal with function syms. */
5563 if (h->type == STT_FUNC
f5385ebf 5564 || h->needs_plt)
e86ce104
AM		 5565 {
5566 /* Clear procedure linkage table information for any symbol that
5567 won't need a .plt entry. */
411e1bfb
AM		 5568 struct plt_entry *ent;
5569 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5570 if (ent->plt.refcount > 0)
5571 break;
8387904d 5572 if (ent == NULL
9c7a29a3
AM		 5573 || SYMBOL_CALLS_LOCAL (info, h)
5574 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5575 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5576 {
411e1bfb 5577 h->plt.plist = NULL;
f5385ebf 5578 h->needs_plt = 0;
40b8271b 5579 }
5bd4f169 5580 }
bbd7ec4a 5581 else
411e1bfb 5582 h->plt.plist = NULL;
5bd4f169
AM		 5583
5584 /* If this is a weak symbol, and there is a real definition, the
5585 processor independent code will have arranged for us to see the
5586 real definition first, and we can just use the same value. */
f6e332e6 5587 if (h->u.weakdef != NULL)
5bd4f169 5588 {
f6e332e6
AM		 5589 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5590 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5591 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5592 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5593 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5594 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5595 return TRUE;
5bd4f169
AM		 5596 }
5597
5bd4f169
AM		 5598 /* If we are creating a shared library, we must presume that the
5599 only references to the symbol are via the global offset table.
5600 For such cases we need not do anything here; the relocations will
5601 be handled correctly by relocate_section. */
5602 if (info->shared)
b34976b6 5603 return TRUE;
5bd4f169 5604
65f38f15
AM		 5605 /* If there are no references to this symbol that do not use the
5606 GOT, we don't need to generate a copy reloc. */
f5385ebf 5607 if (!h->non_got_ref)
b34976b6 5608 return TRUE;
65f38f15 5609
f4656909 5610 if (ELIMINATE_COPY_RELOCS)
65f38f15 5611 {
f4656909
AM		 5612 struct ppc_link_hash_entry * eh;
5613 struct ppc_dyn_relocs *p;
65f38f15 5614
f4656909
AM		 5615 eh = (struct ppc_link_hash_entry *) h;
5616 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5617 {
5618 s = p->sec->output_section;
5619 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5620 break;
5621 }
5622
5623 /* If we didn't find any dynamic relocs in read-only sections, then
5624 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5625 if (p == NULL)
5626 {
f5385ebf 5627 h->non_got_ref = 0;
f4656909
AM		 5628 return TRUE;
5629 }
65f38f15
AM		 5630 }
5631
5d35169e 5632 if (h->plt.plist != NULL)
97b639ba
AM		 5633 {
5634 /* We should never get here, but unfortunately there are versions
5635 of gcc out there that improperly (for this ABI) put initialized
5636 function pointers, vtable refs and suchlike in read-only
5637 sections. Allow them to proceed, but warn that this might
5638 break at runtime. */
5639 (*_bfd_error_handler)
5640 (_("copy reloc against `%s' requires lazy plt linking; "
5641 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5642 h->root.root.string);
5643 }
5d35169e
AM		 5644
5645 /* This is a reference to a symbol defined by a dynamic object which
5646 is not a function. */
5647
5bd4f169
AM		 5648 /* We must allocate the symbol in our .dynbss section, which will
5649 become part of the .bss section of the executable. There will be
5650 an entry for this symbol in the .dynsym section. The dynamic
5651 object will contain position independent code, so all references
5652 from the dynamic object to this symbol will go through the global
5653 offset table. The dynamic linker will use the .dynsym entry to
5654 determine the address it must put in the global offset table, so
5655 both the dynamic object and the regular object will refer to the
5656 same memory location for the variable. */
5bd4f169 5657
04c9666a
AM		 5658 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5659 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 5660 runtime process image. We need to remember the offset into the
5661 .rela.bss section we are going to use. */
5662 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5663 {
eea6121a 5664 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5665 h->needs_copy = 1;
5bd4f169
AM		 5666 }
5667
5668 /* We need to figure out the alignment required for this symbol. I
5669 have no idea how ELF linkers handle this. */
5670 power_of_two = bfd_log2 (h->size);
5671 if (power_of_two > 4)
5672 power_of_two = 4;
5673
5674 /* Apply the required alignment. */
4ce794b7 5675 s = htab->dynbss;
eea6121a 5676 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5677 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5678 {
65f38f15 5679 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5680 return FALSE;
5bd4f169
AM		 5681 }
5682
5683 /* Define the symbol as being at this point in the section. */
5684 h->root.u.def.section = s;
eea6121a 5685 h->root.u.def.value = s->size;
5bd4f169
AM		 5686
5687 /* Increment the section size to make room for the symbol. */
eea6121a 5688 s->size += h->size;
5bd4f169 5689
b34976b6 5690 return TRUE;
5bd4f169
AM		 5691}
5692
e86ce104
AM		 5693/* If given a function descriptor symbol, hide both the function code
5694 sym and the descriptor. */
5695static void
4ce794b7
AM		 5696ppc64_elf_hide_symbol (struct bfd_link_info *info,
5697 struct elf_link_hash_entry *h,
5698 bfd_boolean force_local)
e86ce104 5699{
34814b9f 5700 struct ppc_link_hash_entry *eh;
e86ce104
AM		 5701 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5702
34814b9f
AM		 5703 eh = (struct ppc_link_hash_entry *) h;
5704 if (eh->is_func_descriptor)
e86ce104 5705 {
34814b9f 5706 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5707
721956f4 5708 if (fh == NULL)
d1329ca3
AM		 5709 {
5710 const char *p, *q;
5711 struct ppc_link_hash_table *htab;
5712 char save;
5713
5714 /* We aren't supposed to use alloca in BFD because on
5715 systems which do not have alloca the version in libiberty
5716 calls xmalloc, which might cause the program to crash
5717 when it runs out of memory. This function doesn't have a
5718 return status, so there's no way to gracefully return an
5719 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 5720 accessed; It's either a string in an ELF string table,
5721 or allocated in an objalloc structure. */
d1329ca3 5722
34814b9f 5723 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 5724 save = *p;
5725 *(char *) p = '.';
5726 htab = ppc_hash_table (info);
34814b9f
AM		 5727 fh = (struct ppc_link_hash_entry *)
5728 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5729 *(char *) p = save;
5730
5731 /* Unfortunately, if it so happens that the string we were
5732 looking for was allocated immediately before this string,
5733 then we overwrote the string terminator. That's the only
5734 reason the lookup should fail. */
5735 if (fh == NULL)
5736 {
34814b9f
AM		 5737 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5738 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5739 --q, --p;
34814b9f
AM		 5740 if (q < eh->elf.root.root.string && *p == '.')
5741 fh = (struct ppc_link_hash_entry *)
5742 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 5743 }
5744 if (fh != NULL)
5745 {
34814b9f
AM		 5746 eh->oh = fh;
5747 fh->oh = eh;
d1329ca3
AM		 5748 }
5749 }
e86ce104 5750 if (fh != NULL)
34814b9f 5751 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 5752 }
5753}
5754
411e1bfb 5755static bfd_boolean
8843416a
AM		 5756get_sym_h (struct elf_link_hash_entry **hp,
5757 Elf_Internal_Sym **symp,
5758 asection **symsecp,
5759 char **tls_maskp,
5760 Elf_Internal_Sym **locsymsp,
5761 unsigned long r_symndx,
5762 bfd *ibfd)
411e1bfb
AM		 5763{
5764 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5765
5766 if (r_symndx >= symtab_hdr->sh_info)
5767 {
5768 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5769 struct elf_link_hash_entry *h;
5770
5771 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5772 while (h->root.type == bfd_link_hash_indirect
5773 || h->root.type == bfd_link_hash_warning)
5774 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5775
5776 if (hp != NULL)
5777 *hp = h;
5778
5779 if (symp != NULL)
5780 *symp = NULL;
5781
5782 if (symsecp != NULL)
5783 {
5784 asection *symsec = NULL;
5785 if (h->root.type == bfd_link_hash_defined
5786 || h->root.type == bfd_link_hash_defweak)
5787 symsec = h->root.u.def.section;
5788 *symsecp = symsec;
5789 }
5790
e7b938ca 5791 if (tls_maskp != NULL)
411e1bfb
AM		 5792 {
5793 struct ppc_link_hash_entry *eh;
5794
5795 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5796 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 5797 }
5798 }
5799 else
5800 {
5801 Elf_Internal_Sym *sym;
5802 Elf_Internal_Sym *locsyms = *locsymsp;
5803
5804 if (locsyms == NULL)
5805 {
5806 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5807 if (locsyms == NULL)
5808 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5809 symtab_hdr->sh_info,
5810 0, NULL, NULL, NULL);
5811 if (locsyms == NULL)
5812 return FALSE;
5813 *locsymsp = locsyms;
5814 }
5815 sym = locsyms + r_symndx;
5816
5817 if (hp != NULL)
5818 *hp = NULL;
5819
5820 if (symp != NULL)
5821 *symp = sym;
5822
5823 if (symsecp != NULL)
5824 {
5825 asection *symsec = NULL;
5826 if ((sym->st_shndx != SHN_UNDEF
5827 && sym->st_shndx < SHN_LORESERVE)
5828 || sym->st_shndx > SHN_HIRESERVE)
5829 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5830 *symsecp = symsec;
5831 }
5832
e7b938ca 5833 if (tls_maskp != NULL)
411e1bfb
AM		 5834 {
5835 struct got_entry **lgot_ents;
e7b938ca 5836 char *tls_mask;
411e1bfb 5837
e7b938ca 5838 tls_mask = NULL;
411e1bfb
AM		 5839 lgot_ents = elf_local_got_ents (ibfd);
5840 if (lgot_ents != NULL)
5841 {
e7b938ca
AM		 5842 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5843 tls_mask = &lgot_masks[r_symndx];
411e1bfb 5844 }
e7b938ca 5845 *tls_maskp = tls_mask;
411e1bfb
AM		 5846 }
5847 }
5848 return TRUE;
5849}
5850
e7b938ca 5851/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 5852 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 5853 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 5854
5855static int
0d4792f7
AM		 5856get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5857 Elf_Internal_Sym **locsymsp,
4ce794b7 5858 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 5859{
5860 unsigned long r_symndx;
0d4792f7 5861 int next_r;
411e1bfb
AM		 5862 struct elf_link_hash_entry *h;
5863 Elf_Internal_Sym *sym;
5864 asection *sec;
5865 bfd_vma off;
5866
5867 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 5868 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5869 return 0;
411e1bfb 5870
e7b938ca 5871 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb
AM		 5872 || sec == NULL
5873 || ppc64_elf_section_data (sec)->t_symndx == NULL)
951fd09b 5874 return 1;
411e1bfb
AM		 5875
5876 /* Look inside a TOC section too. */
5877 if (h != NULL)
5878 {
5879 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5880 off = h->root.u.def.value;
5881 }
5882 else
5883 off = sym->st_value;
5884 off += rel->r_addend;
5885 BFD_ASSERT (off % 8 == 0);
5886 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
951fd09b 5887 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
e7b938ca 5888 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 5889 return 0;
0d4792f7
AM		 5890 if (toc_symndx != NULL)
5891 *toc_symndx = r_symndx;
5892 if ((h == NULL
5893 || ((h->root.type == bfd_link_hash_defined
5894 || h->root.type == bfd_link_hash_defweak)
f5385ebf 5895 && !h->def_dynamic))
0d4792f7
AM		 5896 && (next_r == -1 || next_r == -2))
5897 return 1 - next_r;
951fd09b 5898 return 1;
411e1bfb
AM		 5899}
5900
754021d0 5901/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 5902 code for the old ABI, these will already have been done. */
754021d0
AM		 5903
5904static bfd_boolean
5905adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5906{
5907 struct ppc_link_hash_entry *eh;
5908 asection *sym_sec;
5909 long *opd_adjust;
5910
5911 if (h->root.type == bfd_link_hash_indirect)
5912 return TRUE;
5913
5914 if (h->root.type == bfd_link_hash_warning)
5915 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5916
5917 if (h->root.type != bfd_link_hash_defined
5918 && h->root.type != bfd_link_hash_defweak)
5919 return TRUE;
5920
5921 eh = (struct ppc_link_hash_entry *) h;
5922 if (eh->adjust_done)
5923 return TRUE;
5924
5925 sym_sec = eh->elf.root.u.def.section;
4025353c
AM		 5926 opd_adjust = get_opd_info (sym_sec);
5927 if (opd_adjust != NULL)
754021d0 5928 {
3f764659 5929 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 5930 if (adjust == -1)
5931 {
5932 /* This entry has been deleted. */
81688140
AM		 5933 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5934 if (dsec == NULL)
5935 {
5936 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5937 if (elf_discarded_section (dsec))
5938 {
5939 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5940 break;
5941 }
5942 }
4025353c 5943 eh->elf.root.u.def.value = 0;
81688140 5944 eh->elf.root.u.def.section = dsec;
4025353c
AM		 5945 }
5946 else
5947 eh->elf.root.u.def.value += adjust;
754021d0
AM		 5948 eh->adjust_done = 1;
5949 }
5950 return TRUE;
5951}
5952
5953/* Remove unused Official Procedure Descriptor entries. Currently we
5954 only remove those associated with functions in discarded link-once
5955 sections, or weakly defined functions that have been overridden. It
5956 would be possible to remove many more entries for statically linked
5957 applications. */
5958
b34976b6 5959bfd_boolean
3f764659
JJ		 5960ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5961 bfd_boolean non_overlapping)
1e2f5b6e
AM		 5962{
5963 bfd *ibfd;
754021d0 5964 bfd_boolean some_edited = FALSE;
3f764659 5965 asection *need_pad = NULL;
1e2f5b6e 5966
411e1bfb 5967 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 5968 {
5969 asection *sec;
5970 Elf_Internal_Rela *relstart, *rel, *relend;
5971 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 5972 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 5973 struct elf_link_hash_entry **sym_hashes;
5974 bfd_vma offset;
d6fe2dc1 5975 bfd_size_type amt;
4025353c 5976 long *opd_adjust;
3f764659
JJ		 5977 bfd_boolean need_edit, add_aux_fields;
5978 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 5979
5980 sec = bfd_get_section_by_name (ibfd, ".opd");
5981 if (sec == NULL)
5982 continue;
5983
3f764659 5984 amt = sec->size * sizeof (long) / 8;
4025353c
AM		 5985 opd_adjust = get_opd_info (sec);
5986 if (opd_adjust == NULL)
d6fe2dc1 5987 {
4b85d634
AM		 5988 /* check_relocs hasn't been called. Must be a ld -r link
5989 or --just-symbols object. */
4025353c
AM		 5990 opd_adjust = bfd_zalloc (obfd, amt);
5991 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
d6fe2dc1 5992 }
4025353c 5993 memset (opd_adjust, 0, amt);
1e2f5b6e 5994
4b85d634
AM		 5995 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5996 continue;
5997
1e2f5b6e
AM		 5998 if (sec->output_section == bfd_abs_section_ptr)
5999 continue;
6000
6001 /* Look through the section relocs. */
6002 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6003 continue;
6004
6cdc0ccc 6005 local_syms = NULL;
1e2f5b6e
AM		 6006 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6007 sym_hashes = elf_sym_hashes (ibfd);
6008
6009 /* Read the relocations. */
4ce794b7 6010 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6011 info->keep_memory);
1e2f5b6e 6012 if (relstart == NULL)
b34976b6 6013 return FALSE;
1e2f5b6e
AM		 6014
6015 /* First run through the relocs to check they are sane, and to
6016 determine whether we need to edit this opd section. */
b34976b6 6017 need_edit = FALSE;
3f764659 6018 need_pad = sec;
1e2f5b6e
AM		 6019 offset = 0;
6020 relend = relstart + sec->reloc_count;
50bc7936 6021 for (rel = relstart; rel < relend; )
1e2f5b6e 6022 {
04c9666a 6023 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6024 unsigned long r_symndx;
6025 asection *sym_sec;
6026 struct elf_link_hash_entry *h;
6027 Elf_Internal_Sym *sym;
6028
3f764659 6029 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6030 only interested in the reloc pointing to a function entry
6031 point. */
50bc7936
AM		 6032 if (rel->r_offset != offset
6033 || rel + 1 >= relend
6034 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6035 {
6036 /* If someone messes with .opd alignment then after a
6037 "ld -r" we might have padding in the middle of .opd.
6038 Also, there's nothing to prevent someone putting
6039 something silly in .opd with the assembler. No .opd
b34976b6 6040 optimization for them! */
3f764659 6041 broken_opd:
1e2f5b6e 6042 (*_bfd_error_handler)
d003868e 6043 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6044 need_edit = FALSE;
1e2f5b6e
AM		 6045 break;
6046 }
6047
50bc7936
AM		 6048 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6049 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6050 {
6051 (*_bfd_error_handler)
d003868e
AM		 6052 (_("%B: unexpected reloc type %u in .opd section"),
6053 ibfd, r_type);
50bc7936
AM		 6054 need_edit = FALSE;
6055 break;
6056 }
6057
1e2f5b6e 6058 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6059 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6060 r_symndx, ibfd))
50bc7936 6061 goto error_ret;
1e2f5b6e
AM		 6062
6063 if (sym_sec == NULL || sym_sec->owner == NULL)
6064 {
411e1bfb
AM		 6065 const char *sym_name;
6066 if (h != NULL)
6067 sym_name = h->root.root.string;
6068 else
be8dd2ca 6069 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
411e1bfb 6070
1e2f5b6e 6071 (*_bfd_error_handler)
d003868e
AM		 6072 (_("%B: undefined sym `%s' in .opd section"),
6073 ibfd, sym_name);
b34976b6 6074 need_edit = FALSE;
1e2f5b6e
AM		 6075 break;
6076 }
6077
51020317
AM		 6078 /* opd entries are always for functions defined in the
6079 current input bfd. If the symbol isn't defined in the
6080 input bfd, then we won't be using the function in this
6081 bfd; It must be defined in a linkonce section in another
6082 bfd, or is weak. It's also possible that we are
6083 discarding the function due to a linker script /DISCARD/,
6084 which we test for via the output_section. */
6085 if (sym_sec->owner != ibfd
6086 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6087 need_edit = TRUE;
1e2f5b6e 6088
50bc7936 6089 rel += 2;
3f764659
JJ		 6090 if (rel == relend
6091 || (rel + 1 == relend && rel->r_offset == offset + 16))
6092 {
6093 if (sec->size == offset + 24)
6094 {
6095 need_pad = NULL;
6096 break;
6097 }
6098 if (rel == relend && sec->size == offset + 16)
6099 {
6100 cnt_16b++;
6101 break;
6102 }
6103 goto broken_opd;
6104 }
6105
6106 if (rel->r_offset == offset + 24)
6107 offset += 24;
6108 else if (rel->r_offset != offset + 16)
6109 goto broken_opd;
6110 else if (rel + 1 < relend
6111 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6112 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6113 {
6114 offset += 16;
6115 cnt_16b++;
6116 }
6117 else if (rel + 2 < relend
6118 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6119 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6120 {
6121 offset += 24;
6122 rel += 1;
6123 }
6124 else
6125 goto broken_opd;
1e2f5b6e
AM		 6126 }
6127
3f764659
JJ		 6128 add_aux_fields = non_overlapping && cnt_16b > 0;
6129
6130 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6131 {
6132 Elf_Internal_Rela *write_rel;
6133 bfd_byte *rptr, *wptr;
3f764659 6134 bfd_byte *new_contents = NULL;
b34976b6 6135 bfd_boolean skip;
3f764659 6136 long opd_ent_size;
1e2f5b6e
AM		 6137
6138 /* This seems a waste of time as input .opd sections are all
6139 zeros as generated by gcc, but I suppose there's no reason
6140 this will always be so. We might start putting something in
6141 the third word of .opd entries. */
6142 if ((sec->flags & SEC_IN_MEMORY) == 0)
6143 {
eea6121a
AM		 6144 bfd_byte *loc;
6145 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6146 {
eea6121a
AM		 6147 if (loc != NULL)
6148 free (loc);
50bc7936 6149 error_ret:
6cdc0ccc
AM		 6150 if (local_syms != NULL
6151 && symtab_hdr->contents != (unsigned char *) local_syms)
6152 free (local_syms);
6cdc0ccc
AM		 6153 if (elf_section_data (sec)->relocs != relstart)
6154 free (relstart);
b34976b6 6155 return FALSE;
6cdc0ccc 6156 }
1e2f5b6e
AM		 6157 sec->contents = loc;
6158 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6159 }
6160
6161 elf_section_data (sec)->relocs = relstart;
6162
6163 wptr = sec->contents;
6164 rptr = sec->contents;
3f764659
JJ		 6165 new_contents = sec->contents;
6166
6167 if (add_aux_fields)
6168 {
6169 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6170 if (new_contents == NULL)
6171 return FALSE;
6172 need_pad = FALSE;
6173 wptr = new_contents;
6174 }
6175
1e2f5b6e 6176 write_rel = relstart;
b34976b6 6177 skip = FALSE;
1e2f5b6e 6178 offset = 0;
3f764659 6179 opd_ent_size = 0;
1e2f5b6e
AM		 6180 for (rel = relstart; rel < relend; rel++)
6181 {
50bc7936
AM		 6182 unsigned long r_symndx;
6183 asection *sym_sec;
6184 struct elf_link_hash_entry *h;
6185 Elf_Internal_Sym *sym;
6186
6187 r_symndx = ELF64_R_SYM (rel->r_info);
6188 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6189 r_symndx, ibfd))
50bc7936
AM		 6190 goto error_ret;
6191
1e2f5b6e
AM		 6192 if (rel->r_offset == offset)
6193 {
50bc7936 6194 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6195
6196 /* See if the .opd entry is full 24 byte or
6197 16 byte (with fd_aux entry overlapped with next
6198 fd_func). */
6199 opd_ent_size = 24;
6200 if ((rel + 2 == relend && sec->size == offset + 16)
6201 || (rel + 3 < relend
6202 && rel[2].r_offset == offset + 16
6203 && rel[3].r_offset == offset + 24
6204 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6205 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6206 opd_ent_size = 16;
6207
4025353c
AM		 6208 if (h != NULL
6209 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6210 {
6211 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6212 ppc_hash_table (info));
6213 if (fdh != NULL
6214 && fdh->elf.root.type != bfd_link_hash_defined
6215 && fdh->elf.root.type != bfd_link_hash_defweak)
6216 fdh = NULL;
6217 }
1e2f5b6e 6218
51020317
AM		 6219 skip = (sym_sec->owner != ibfd
6220 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6221 if (skip)
6222 {
4025353c 6223 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6224 {
6225 /* Arrange for the function descriptor sym
6226 to be dropped. */
d6fe2dc1
AM		 6227 fdh->elf.root.u.def.value = 0;
6228 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6229 }
3f764659 6230 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6231 }
6232 else
1e2f5b6e
AM		 6233 {
6234 /* We'll be keeping this opd entry. */
6235
4025353c 6236 if (fdh != NULL)
1e2f5b6e 6237 {
754021d0
AM		 6238 /* Redefine the function descriptor symbol to
6239 this location in the opd section. It is
6240 necessary to update the value here rather
6241 than using an array of adjustments as we do
6242 for local symbols, because various places
6243 in the generic ELF code use the value
6244 stored in u.def.value. */
3f764659 6245 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6246 fdh->adjust_done = 1;
1e2f5b6e 6247 }
754021d0
AM		 6248
6249 /* Local syms are a bit tricky. We could
6250 tweak them as they can be cached, but
6251 we'd need to look through the local syms
6252 for the function descriptor sym which we
6253 don't have at the moment. So keep an
6254 array of adjustments. */
3f764659
JJ		 6255 opd_adjust[rel->r_offset / 8]
6256 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6257
6258 if (wptr != rptr)
3f764659
JJ		 6259 memcpy (wptr, rptr, opd_ent_size);
6260 wptr += opd_ent_size;
6261 if (add_aux_fields && opd_ent_size == 16)
6262 {
6263 memset (wptr, '\0', 8);
6264 wptr += 8;
6265 }
1e2f5b6e 6266 }
3f764659
JJ		 6267 rptr += opd_ent_size;
6268 offset += opd_ent_size;
1e2f5b6e
AM		 6269 }
6270
50bc7936
AM		 6271 if (skip)
6272 {
6273 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6274 if (info->shared)
6275 {
6276 /* We won't be needing dynamic relocs here. */
6277 struct ppc_dyn_relocs **pp;
6278 struct ppc_dyn_relocs *p;
6279
6280 if (h != NULL)
6281 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6282 else if (sym_sec != NULL)
6283 pp = ((struct ppc_dyn_relocs **)
6284 &elf_section_data (sym_sec)->local_dynrel);
6285 else
6286 pp = ((struct ppc_dyn_relocs **)
6287 &elf_section_data (sec)->local_dynrel);
6288 while ((p = *pp) != NULL)
6289 {
6290 if (p->sec == sec)
6291 {
6292 p->count -= 1;
6293 if (p->count == 0)
d37c89e5 6294 *pp = p->next;
50bc7936
AM		 6295 break;
6296 }
6297 pp = &p->next;
6298 }
6299 }
6300 }
6301 else
1e2f5b6e 6302 {
50bc7936
AM		 6303 /* We need to adjust any reloc offsets to point to the
6304 new opd entries. While we're at it, we may as well
6305 remove redundant relocs. */
3f764659 6306 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6307 if (write_rel != rel)
6308 memcpy (write_rel, rel, sizeof (*rel));
6309 ++write_rel;
6310 }
6311 }
6312
3f764659 6313 sec->size = wptr - new_contents;
1e2f5b6e 6314 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6315 if (add_aux_fields)
6316 {
6317 free (sec->contents);
6318 sec->contents = new_contents;
6319 }
6320
cdcf6e38
AM		 6321 /* Fudge the size too, as this is used later in
6322 elf_bfd_final_link if we are emitting relocs. */
6323 elf_section_data (sec)->rel_hdr.sh_size
6324 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6325 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6326 some_edited = TRUE;
1e2f5b6e 6327 }
6cdc0ccc 6328 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6329 free (relstart);
6cdc0ccc 6330
411e1bfb
AM		 6331 if (local_syms != NULL
6332 && symtab_hdr->contents != (unsigned char *) local_syms)
6333 {
6334 if (!info->keep_memory)
6335 free (local_syms);
6336 else
6337 symtab_hdr->contents = (unsigned char *) local_syms;
6338 }
6339 }
6340
754021d0
AM		 6341 if (some_edited)
6342 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6343
3f764659
JJ		 6344 /* If we are doing a final link and the last .opd entry is just 16 byte
6345 long, add a 8 byte padding after it. */
6346 if (need_pad != NULL && !info->relocatable)
6347 {
6348 bfd_byte *p;
6349
6350 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6351 {
6352 BFD_ASSERT (need_pad->size > 0);
6353
6354 p = bfd_malloc (need_pad->size + 8);
6355 if (p == NULL)
6356 return FALSE;
699733f6 6357
3f764659
JJ		 6358 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6359 p, 0, need_pad->size))
6360 return FALSE;
6361
6362 need_pad->contents = p;
6363 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6364 }
6365 else
6366 {
6367 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6368 if (p == NULL)
6369 return FALSE;
6370
6371 need_pad->contents = p;
6372 }
6373
6374 memset (need_pad->contents + need_pad->size, 0, 8);
6375 need_pad->size += 8;
6376 }
6377
411e1bfb
AM		 6378 return TRUE;
6379}
6380
e1918d23 6381/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6382
e1918d23 6383asection *
4ce794b7 6384ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6385{
411e1bfb
AM		 6386 struct ppc_link_hash_table *htab;
6387
411e1bfb 6388 htab = ppc_hash_table (info);
a48ebf4d
AM		 6389 if (htab->tls_get_addr != NULL)
6390 {
8387904d 6391 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6392
8387904d
AM		 6393 while (h->elf.root.type == bfd_link_hash_indirect
6394 || h->elf.root.type == bfd_link_hash_warning)
6395 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6396
6397 htab->tls_get_addr = h;
8387904d
AM		 6398
6399 if (htab->tls_get_addr_fd == NULL
6400 && h->oh != NULL
c4f68ce3
AM		 6401 && h->oh->is_func_descriptor
6402 && (h->oh->elf.root.type == bfd_link_hash_defined
6403 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6404 htab->tls_get_addr_fd = h->oh;
6405 }
6406
6407 if (htab->tls_get_addr_fd != NULL)
6408 {
6409 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6410
6411 while (h->elf.root.type == bfd_link_hash_indirect
6412 || h->elf.root.type == bfd_link_hash_warning)
6413 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6414
6415 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6416 }
6417
e1918d23 6418 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6419}
411e1bfb 6420
951fd09b
AM		 6421/* Run through all the TLS relocs looking for optimization
6422 opportunities. The linker has been hacked (see ppc64elf.em) to do
6423 a preliminary section layout so that we know the TLS segment
6424 offsets. We can't optimize earlier because some optimizations need
6425 to know the tp offset, and we need to optimize before allocating
6426 dynamic relocations. */
6427
6428bfd_boolean
4ce794b7 6429ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6430{
6431 bfd *ibfd;
6432 asection *sec;
6433 struct ppc_link_hash_table *htab;
6434
1049f94e 6435 if (info->relocatable || info->shared)
411e1bfb
AM		 6436 return TRUE;
6437
951fd09b 6438 htab = ppc_hash_table (info);
411e1bfb
AM		 6439 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6440 {
6441 Elf_Internal_Sym *locsyms = NULL;
6442
6443 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6444 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6445 {
6446 Elf_Internal_Rela *relstart, *rel, *relend;
6447 int expecting_tls_get_addr;
6448
6449 /* Read the relocations. */
4ce794b7 6450 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6451 info->keep_memory);
411e1bfb
AM		 6452 if (relstart == NULL)
6453 return FALSE;
6454
6455 expecting_tls_get_addr = 0;
6456 relend = relstart + sec->reloc_count;
6457 for (rel = relstart; rel < relend; rel++)
6458 {
6459 enum elf_ppc64_reloc_type r_type;
6460 unsigned long r_symndx;
6461 struct elf_link_hash_entry *h;
6462 Elf_Internal_Sym *sym;
6463 asection *sym_sec;
e7b938ca
AM		 6464 char *tls_mask;
6465 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6466 bfd_vma value;
951fd09b 6467 bfd_boolean ok_tprel, is_local;
411e1bfb
AM		 6468
6469 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6470 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM		 6471 r_symndx, ibfd))
6472 {
6473 err_free_rel:
6474 if (elf_section_data (sec)->relocs != relstart)
6475 free (relstart);
6476 if (locsyms != NULL
6477 && (elf_tdata (ibfd)->symtab_hdr.contents
6478 != (unsigned char *) locsyms))
6479 free (locsyms);
6480 return FALSE;
6481 }
6482
6483 if (h != NULL)
6484 {
6485 if (h->root.type != bfd_link_hash_defined
6486 && h->root.type != bfd_link_hash_defweak)
6487 continue;
6488 value = h->root.u.def.value;
6489 }
6490 else
4025353c
AM		 6491 /* Symbols referenced by TLS relocs must be of type
6492 STT_TLS. So no need for .opd local sym adjust. */
6493 value = sym->st_value;
951fd09b 6494
411e1bfb 6495 ok_tprel = FALSE;
951fd09b
AM		 6496 is_local = FALSE;
6497 if (h == NULL
f5385ebf 6498 || !h->def_dynamic)
411e1bfb 6499 {
951fd09b 6500 is_local = TRUE;
411e1bfb
AM		 6501 value += sym_sec->output_offset;
6502 value += sym_sec->output_section->vma;
e1918d23 6503 value -= htab->elf.tls_sec->vma;
411e1bfb
AM		 6504 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6505 < (bfd_vma) 1 << 32);
6506 }
6507
4ce794b7 6508 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM		 6509 switch (r_type)
6510 {
6511 case R_PPC64_GOT_TLSLD16:
6512 case R_PPC64_GOT_TLSLD16_LO:
6513 case R_PPC64_GOT_TLSLD16_HI:
6514 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM		 6515 /* These relocs should never be against a symbol
6516 defined in a shared lib. Leave them alone if
6517 that turns out to be the case. */
e717da7e 6518 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM		 6519 if (!is_local)
6520 continue;
6521
951fd09b
AM		 6522 /* LD -> LE */
6523 tls_set = 0;
6524 tls_clear = TLS_LD;
e7b938ca 6525 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6526 expecting_tls_get_addr = 1;
6527 break;
6528
6529 case R_PPC64_GOT_TLSGD16:
6530 case R_PPC64_GOT_TLSGD16_LO:
6531 case R_PPC64_GOT_TLSGD16_HI:
6532 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6533 if (ok_tprel)
411e1bfb
AM		 6534 /* GD -> LE */
6535 tls_set = 0;
6536 else
6537 /* GD -> IE */
951fd09b
AM		 6538 tls_set = TLS_TLS | TLS_TPRELGD;
6539 tls_clear = TLS_GD;
e7b938ca 6540 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6541 expecting_tls_get_addr = 1;
6542 break;
6543
6544 case R_PPC64_GOT_TPREL16_DS:
6545 case R_PPC64_GOT_TPREL16_LO_DS:
6546 case R_PPC64_GOT_TPREL16_HI:
6547 case R_PPC64_GOT_TPREL16_HA:
6548 expecting_tls_get_addr = 0;
6549 if (ok_tprel)
6550 {
6551 /* IE -> LE */
6552 tls_set = 0;
6553 tls_clear = TLS_TPREL;
e7b938ca 6554 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM		 6555 break;
6556 }
6557 else
6558 continue;
6559
6560 case R_PPC64_REL14:
6561 case R_PPC64_REL14_BRTAKEN:
6562 case R_PPC64_REL14_BRNTAKEN:
6563 case R_PPC64_REL24:
6564 if (h != NULL
8387904d
AM		 6565 && (h == &htab->tls_get_addr->elf
6566 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM		 6567 {
6568 if (!expecting_tls_get_addr
6569 && rel != relstart
6570 && ((ELF64_R_TYPE (rel[-1].r_info)
6571 == R_PPC64_TOC16)
6572 || (ELF64_R_TYPE (rel[-1].r_info)
6573 == R_PPC64_TOC16_LO)))
6574 {
6575 /* Check for toc tls entries. */
6576 char *toc_tls;
951fd09b 6577 int retval;
411e1bfb 6578
0d4792f7 6579 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM		 6580 rel - 1, ibfd);
6581 if (retval == 0)
411e1bfb
AM		 6582 goto err_free_rel;
6583 if (toc_tls != NULL)
951fd09b 6584 expecting_tls_get_addr = retval > 1;
411e1bfb
AM		 6585 }
6586
6587 if (expecting_tls_get_addr)
6588 {
6589 struct plt_entry *ent;
6590 for (ent = h->plt.plist; ent; ent = ent->next)
6591 if (ent->addend == 0)
6592 {
6593 if (ent->plt.refcount > 0)
6594 ent->plt.refcount -= 1;
6595 break;
6596 }
6597 }
6598 }
6599 expecting_tls_get_addr = 0;
6600 continue;
6601
6602 case R_PPC64_TPREL64:
6603 expecting_tls_get_addr = 0;
6604 if (ok_tprel)
6605 {
6606 /* IE -> LE */
6607 tls_set = TLS_EXPLICIT;
6608 tls_clear = TLS_TPREL;
6609 break;
6610 }
6611 else
6612 continue;
6613
6614 case R_PPC64_DTPMOD64:
6615 expecting_tls_get_addr = 0;
951fd09b
AM		 6616 if (rel + 1 < relend
6617 && (rel[1].r_info
6618 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6619 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 6620 {
951fd09b 6621 if (ok_tprel)
411e1bfb 6622 /* GD -> LE */
951fd09b 6623 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM		 6624 else
6625 /* GD -> IE */
951fd09b
AM		 6626 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6627 tls_clear = TLS_GD;
411e1bfb
AM		 6628 }
6629 else
6630 {
951fd09b
AM		 6631 if (!is_local)
6632 continue;
6633
6634 /* LD -> LE */
6635 tls_set = TLS_EXPLICIT;
6636 tls_clear = TLS_LD;
411e1bfb
AM		 6637 }
6638 break;
6639
6640 default:
6641 expecting_tls_get_addr = 0;
6642 continue;
6643 }
6644
6645 if ((tls_set & TLS_EXPLICIT) == 0)
6646 {
6647 struct got_entry *ent;
6648
6649 /* Adjust got entry for this reloc. */
6650 if (h != NULL)
6651 ent = h->got.glist;
6652 else
6653 ent = elf_local_got_ents (ibfd)[r_symndx];
6654
6655 for (; ent != NULL; ent = ent->next)
6656 if (ent->addend == rel->r_addend
e717da7e 6657 && ent->owner == ibfd
e7b938ca 6658 && ent->tls_type == tls_type)
411e1bfb
AM		 6659 break;
6660 if (ent == NULL)
6661 abort ();
6662
6663 if (tls_set == 0)
6664 {
6665 /* We managed to get rid of a got entry. */
6666 if (ent->got.refcount > 0)
6667 ent->got.refcount -= 1;
6668 }
411e1bfb
AM		 6669 }
6670 else if (h != NULL)
6671 {
6672 struct ppc_link_hash_entry * eh;
6673 struct ppc_dyn_relocs **pp;
6674 struct ppc_dyn_relocs *p;
6675
6676 /* Adjust dynamic relocs. */
6677 eh = (struct ppc_link_hash_entry *) h;
6678 for (pp = &eh->dyn_relocs;
6679 (p = *pp) != NULL;
6680 pp = &p->next)
6681 if (p->sec == sec)
6682 {
6683 /* If we got rid of a DTPMOD/DTPREL reloc
6684 pair then we'll lose one or two dyn
6685 relocs. */
951fd09b 6686 if (tls_set == (TLS_EXPLICIT | TLS_GD))
411e1bfb 6687 p->count -= 1;
951fd09b 6688 p->count -= 1;
411e1bfb
AM		 6689 if (p->count == 0)
6690 *pp = p->next;
6691 break;
6692 }
6693 }
6694
e7b938ca
AM		 6695 *tls_mask |= tls_set;
6696 *tls_mask &= ~tls_clear;
411e1bfb
AM		 6697 }
6698
6699 if (elf_section_data (sec)->relocs != relstart)
6700 free (relstart);
6701 }
6702
6703 if (locsyms != NULL
6704 && (elf_tdata (ibfd)->symtab_hdr.contents
6705 != (unsigned char *) locsyms))
6cdc0ccc
AM		 6706 {
6707 if (!info->keep_memory)
411e1bfb 6708 free (locsyms);
6cdc0ccc 6709 else
411e1bfb 6710 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 6711 }
1e2f5b6e 6712 }
b34976b6 6713 return TRUE;
1e2f5b6e 6714}
b34976b6 6715
c5614fa4
AM		 6716/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6717 the values of any global symbols in a toc section that has been
6718 edited. Globals in toc sections should be a rarity, so this function
6719 sets a flag if any are found in toc sections other than the one just
6720 edited, so that futher hash table traversals can be avoided. */
6721
6722struct adjust_toc_info
6723{
6724 asection *toc;
6725 unsigned long *skip;
6726 bfd_boolean global_toc_syms;
6727};
6728
6729static bfd_boolean
6730adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6731{
6732 struct ppc_link_hash_entry *eh;
6733 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6734
6735 if (h->root.type == bfd_link_hash_indirect)
6736 return TRUE;
6737
6738 if (h->root.type == bfd_link_hash_warning)
6739 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6740
6741 if (h->root.type != bfd_link_hash_defined
6742 && h->root.type != bfd_link_hash_defweak)
6743 return TRUE;
6744
6745 eh = (struct ppc_link_hash_entry *) h;
6746 if (eh->adjust_done)
6747 return TRUE;
6748
6749 if (eh->elf.root.u.def.section == toc_inf->toc)
6750 {
6751 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6752 if (skip != (unsigned long) -1)
6753 eh->elf.root.u.def.value -= skip;
6754 else
6755 {
6756 (*_bfd_error_handler)
6757 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6758 eh->elf.root.u.def.section = &bfd_abs_section;
6759 eh->elf.root.u.def.value = 0;
6760 }
6761 eh->adjust_done = 1;
6762 }
6763 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6764 toc_inf->global_toc_syms = TRUE;
6765
6766 return TRUE;
6767}
6768
6769/* Examine all relocs referencing .toc sections in order to remove
6770 unused .toc entries. */
6771
6772bfd_boolean
6773ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6774{
6775 bfd *ibfd;
6776 struct adjust_toc_info toc_inf;
6777
6778 toc_inf.global_toc_syms = TRUE;
6779 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6780 {
6781 asection *toc, *sec;
6782 Elf_Internal_Shdr *symtab_hdr;
6783 Elf_Internal_Sym *local_syms;
6784 struct elf_link_hash_entry **sym_hashes;
6785 Elf_Internal_Rela *relstart, *rel, *wrel;
6786 unsigned long *skip, *drop;
6787 unsigned char *used;
6788 unsigned char *keep, last, some_unused;
6789
6790 toc = bfd_get_section_by_name (ibfd, ".toc");
6791 if (toc == NULL
6792 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6793 || elf_discarded_section (toc))
6794 continue;
6795
6796 local_syms = NULL;
6797 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6798 sym_hashes = elf_sym_hashes (ibfd);
6799
6800 /* Look at sections dropped from the final link. */
6801 skip = NULL;
6802 relstart = NULL;
6803 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6804 {
6805 if (sec->reloc_count == 0
6806 || !elf_discarded_section (sec)
6807 || get_opd_info (sec)
6808 || (sec->flags & SEC_ALLOC) == 0
6809 || (sec->flags & SEC_DEBUGGING) != 0)
6810 continue;
6811
6812 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6813 if (relstart == NULL)
6814 goto error_ret;
6815
6816 /* Run through the relocs to see which toc entries might be
6817 unused. */
6818 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6819 {
6820 enum elf_ppc64_reloc_type r_type;
6821 unsigned long r_symndx;
6822 asection *sym_sec;
6823 struct elf_link_hash_entry *h;
6824 Elf_Internal_Sym *sym;
6825 bfd_vma val;
6826
6827 r_type = ELF64_R_TYPE (rel->r_info);
6828 switch (r_type)
6829 {
6830 default:
6831 continue;
6832
6833 case R_PPC64_TOC16:
6834 case R_PPC64_TOC16_LO:
6835 case R_PPC64_TOC16_HI:
6836 case R_PPC64_TOC16_HA:
6837 case R_PPC64_TOC16_DS:
6838 case R_PPC64_TOC16_LO_DS:
6839 break;
6840 }
6841
6842 r_symndx = ELF64_R_SYM (rel->r_info);
6843 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6844 r_symndx, ibfd))
6845 goto error_ret;
6846
6847 if (sym_sec != toc)
6848 continue;
6849
6850 if (h != NULL)
6851 val = h->root.u.def.value;
6852 else
6853 val = sym->st_value;
6854 val += rel->r_addend;
6855
6856 if (val >= toc->size)
6857 continue;
6858
6859 /* Anything in the toc ought to be aligned to 8 bytes.
6860 If not, don't mark as unused. */
6861 if (val & 7)
6862 continue;
6863
6864 if (skip == NULL)
6865 {
6866 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6867 if (skip == NULL)
6868 goto error_ret;
6869 }
6870
6871 skip[val >> 3] = 1;
6872 }
6873
6874 if (elf_section_data (sec)->relocs != relstart)
6875 free (relstart);
6876 }
6877
6878 if (skip == NULL)
6879 continue;
6880
6881 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6882 if (used == NULL)
6883 {
6884 error_ret:
6885 if (local_syms != NULL
6886 && symtab_hdr->contents != (unsigned char *) local_syms)
6887 free (local_syms);
6888 if (sec != NULL
6889 && relstart != NULL
6890 && elf_section_data (sec)->relocs != relstart)
6891 free (relstart);
6892 if (skip != NULL)
6893 free (skip);
6894 return FALSE;
6895 }
6896
6897 /* Now check all kept sections that might reference the toc. */
6898 for (sec = ibfd->sections;
6899 sec != NULL;
6900 /* Check the toc itself last. */
6901 sec = (sec == toc ? NULL
6902 : sec->next == toc && sec->next->next ? sec->next->next
6903 : sec->next == NULL ? toc
6904 : sec->next))
6905 {
6906 int repeat;
6907
6908 if (sec->reloc_count == 0
6909 || elf_discarded_section (sec)
6910 || get_opd_info (sec)
6911 || (sec->flags & SEC_ALLOC) == 0
6912 || (sec->flags & SEC_DEBUGGING) != 0)
6913 continue;
6914
6915 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6916 if (relstart == NULL)
6917 goto error_ret;
6918
6919 /* Mark toc entries referenced as used. */
6920 repeat = 0;
6921 do
6922 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6923 {
6924 enum elf_ppc64_reloc_type r_type;
6925 unsigned long r_symndx;
6926 asection *sym_sec;
6927 struct elf_link_hash_entry *h;
6928 Elf_Internal_Sym *sym;
6929 bfd_vma val;
6930
6931 r_type = ELF64_R_TYPE (rel->r_info);
6932 switch (r_type)
6933 {
6934 case R_PPC64_TOC16:
6935 case R_PPC64_TOC16_LO:
6936 case R_PPC64_TOC16_HI:
6937 case R_PPC64_TOC16_HA:
6938 case R_PPC64_TOC16_DS:
6939 case R_PPC64_TOC16_LO_DS:
6940 /* In case we're taking addresses of toc entries. */
6941 case R_PPC64_ADDR64:
6942 break;
6943
6944 default:
6945 continue;
6946 }
6947
6948 r_symndx = ELF64_R_SYM (rel->r_info);
6949 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6950 r_symndx, ibfd))
6951 {
6952 free (used);
6953 goto error_ret;
6954 }
6955
6956 if (sym_sec != toc)
6957 continue;
6958
6959 if (h != NULL)
6960 val = h->root.u.def.value;
6961 else
6962 val = sym->st_value;
6963 val += rel->r_addend;
6964
6965 if (val >= toc->size)
6966 continue;
6967
6968 /* For the toc section, we only mark as used if
6969 this entry itself isn't unused. */
6970 if (sec == toc
6971 && !used[val >> 3]
6972 && (used[rel->r_offset >> 3]
6973 || !skip[rel->r_offset >> 3]))
6974 /* Do all the relocs again, to catch reference
6975 chains. */
6976 repeat = 1;
6977
6978 used[val >> 3] = 1;
6979 }
6980 while (repeat);
6981 }
6982
6983 /* Merge the used and skip arrays. Assume that TOC
6984 doublewords not appearing as either used or unused belong
6985 to to an entry more than one doubleword in size. */
6986 for (drop = skip, keep = used, last = 0, some_unused = 0;
6987 drop < skip + (toc->size + 7) / 8;
6988 ++drop, ++keep)
6989 {
6990 if (*keep)
6991 {
6992 *drop = 0;
6993 last = 0;
6994 }
6995 else if (*drop)
6996 {
6997 some_unused = 1;
6998 last = 1;
6999 }
7000 else
7001 *drop = last;
7002 }
7003
7004 free (used);
7005
7006 if (some_unused)
7007 {
7008 bfd_byte *contents, *src;
7009 unsigned long off;
7010
7011 /* Shuffle the toc contents, and at the same time convert the
7012 skip array from booleans into offsets. */
7013 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7014 goto error_ret;
7015
7016 elf_section_data (toc)->this_hdr.contents = contents;
7017
7018 for (src = contents, off = 0, drop = skip;
7019 src < contents + toc->size;
7020 src += 8, ++drop)
7021 {
7022 if (*drop)
7023 {
7024 *drop = (unsigned long) -1;
7025 off += 8;
7026 }
7027 else if (off != 0)
7028 {
7029 *drop = off;
7030 memcpy (src - off, src, 8);
7031 }
7032 }
7033 toc->rawsize = toc->size;
7034 toc->size = src - contents - off;
7035
7036 /* Read toc relocs. */
7037 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE);
7038 if (relstart == NULL)
7039 goto error_ret;
7040
7041 /* Remove unused toc relocs, and adjust those we keep. */
7042 wrel = relstart;
7043 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7044 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7045 {
7046 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7047 wrel->r_info = rel->r_info;
7048 wrel->r_addend = rel->r_addend;
7049 ++wrel;
7050 }
7051 toc->reloc_count = wrel - relstart;
8860955f
AM		 7052 elf_section_data (toc)->rel_hdr.sh_size
7053 = toc->reloc_count * elf_section_data (toc)->rel_hdr.sh_entsize;
7054 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
c5614fa4
AM		 7055
7056 /* Adjust addends for relocs against the toc section sym. */
7057 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7058 {
7059 if (sec->reloc_count == 0
7060 || elf_discarded_section (sec))
7061 continue;
7062
7063 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7064 TRUE);
7065 if (relstart == NULL)
7066 goto error_ret;
7067
7068 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7069 {
7070 enum elf_ppc64_reloc_type r_type;
7071 unsigned long r_symndx;
7072 asection *sym_sec;
7073 struct elf_link_hash_entry *h;
7074 Elf_Internal_Sym *sym;
7075
7076 r_type = ELF64_R_TYPE (rel->r_info);
7077 switch (r_type)
7078 {
7079 default:
7080 continue;
7081
7082 case R_PPC64_TOC16:
7083 case R_PPC64_TOC16_LO:
7084 case R_PPC64_TOC16_HI:
7085 case R_PPC64_TOC16_HA:
7086 case R_PPC64_TOC16_DS:
7087 case R_PPC64_TOC16_LO_DS:
7088 case R_PPC64_ADDR64:
7089 break;
7090 }
7091
7092 r_symndx = ELF64_R_SYM (rel->r_info);
7093 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7094 r_symndx, ibfd))
7095 goto error_ret;
7096
7097 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7098 continue;
7099
7100 rel->r_addend -= skip[rel->r_addend >> 3];
7101 }
7102 }
7103
7104 /* We shouldn't have local or global symbols defined in the TOC,
7105 but handle them anyway. */
7106 if (local_syms != NULL)
7107 {
7108 Elf_Internal_Sym *sym;
7109
7110 for (sym = local_syms;
7111 sym < local_syms + symtab_hdr->sh_info;
7112 ++sym)
7113 if (sym->st_shndx != SHN_UNDEF
7114 && (sym->st_shndx < SHN_LORESERVE
7115 || sym->st_shndx > SHN_HIRESERVE)
7116 && sym->st_value != 0
7117 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7118 {
7119 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7120 sym->st_value -= skip[sym->st_value >> 3];
7121 else
7122 {
7123 (*_bfd_error_handler)
7124 (_("%s defined in removed toc entry"),
be8dd2ca 7125 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
c5614fa4
AM		 7126 sym->st_value = 0;
7127 sym->st_shndx = SHN_ABS;
7128 }
7129 symtab_hdr->contents = (unsigned char *) local_syms;
7130 }
7131 }
7132
7133 /* Finally, adjust any global syms defined in the toc. */
7134 if (toc_inf.global_toc_syms)
7135 {
7136 toc_inf.toc = toc;
7137 toc_inf.skip = skip;
7138 toc_inf.global_toc_syms = FALSE;
7139 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7140 &toc_inf);
7141 }
7142 }
7143
7144 if (local_syms != NULL
7145 && symtab_hdr->contents != (unsigned char *) local_syms)
7146 {
7147 if (!info->keep_memory)
7148 free (local_syms);
7149 else
7150 symtab_hdr->contents = (unsigned char *) local_syms;
7151 }
7152 free (skip);
7153 }
7154
7155 return TRUE;
7156}
7157
65f38f15
AM		 7158/* Allocate space in .plt, .got and associated reloc sections for
7159 dynamic relocs. */
5bd4f169 7160
b34976b6 7161static bfd_boolean
4ce794b7 7162allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7163{
65f38f15
AM		 7164 struct bfd_link_info *info;
7165 struct ppc_link_hash_table *htab;
5bd4f169 7166 asection *s;
65f38f15
AM		 7167 struct ppc_link_hash_entry *eh;
7168 struct ppc_dyn_relocs *p;
411e1bfb 7169 struct got_entry *gent;
5bd4f169 7170
e92d460e 7171 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7172 return TRUE;
5bd4f169 7173
e92d460e
AM		 7174 if (h->root.type == bfd_link_hash_warning)
7175 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7176
65f38f15
AM		 7177 info = (struct bfd_link_info *) inf;
7178 htab = ppc_hash_table (info);
5bd4f169 7179
65f38f15 7180 if (htab->elf.dynamic_sections_created
411e1bfb 7181 && h->dynindx != -1
9c7a29a3 7182 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7183 {
411e1bfb
AM		 7184 struct plt_entry *pent;
7185 bfd_boolean doneone = FALSE;
7186 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7187 if (pent->plt.refcount > 0)
7188 {
411e1bfb
AM		 7189 /* If this is the first .plt entry, make room for the special
7190 first entry. */
4ce794b7 7191 s = htab->plt;
eea6121a
AM		 7192 if (s->size == 0)
7193 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7194
eea6121a 7195 pent->plt.offset = s->size;
411e1bfb
AM		 7196
7197 /* Make room for this entry. */
eea6121a 7198 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7199
7200 /* Make room for the .glink code. */
4ce794b7 7201 s = htab->glink;
eea6121a
AM		 7202 if (s->size == 0)
7203 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7204 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7205 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7206 s->size += 4;
7207 s->size += 2*4;
411e1bfb
AM		 7208
7209 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7210 s = htab->relplt;
eea6121a 7211 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7212 doneone = TRUE;
7213 }
7214 else
7215 pent->plt.offset = (bfd_vma) -1;
7216 if (!doneone)
65f38f15 7217 {
411e1bfb 7218 h->plt.plist = NULL;
f5385ebf 7219 h->needs_plt = 0;
65f38f15
AM		 7220 }
7221 }
7222 else
7223 {
411e1bfb 7224 h->plt.plist = NULL;
f5385ebf 7225 h->needs_plt = 0;
65f38f15
AM		 7226 }
7227
951fd09b
AM		 7228 eh = (struct ppc_link_hash_entry *) h;
7229 /* Run through the TLS GD got entries first if we're changing them
7230 to TPREL. */
e7b938ca 7231 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7232 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7233 if (gent->got.refcount > 0
7234 && (gent->tls_type & TLS_GD) != 0)
7235 {
7236 /* This was a GD entry that has been converted to TPREL. If
7237 there happens to be a TPREL entry we can use that one. */
7238 struct got_entry *ent;
7239 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7240 if (ent->got.refcount > 0
7241 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7242 && ent->addend == gent->addend
7243 && ent->owner == gent->owner)
951fd09b
AM		 7244 {
7245 gent->got.refcount = 0;
7246 break;
7247 }
7248
7249 /* If not, then we'll be using our own TPREL entry. */
7250 if (gent->got.refcount != 0)
7251 gent->tls_type = TLS_TLS | TLS_TPREL;
7252 }
7253
411e1bfb
AM		 7254 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7255 if (gent->got.refcount > 0)
7256 {
951fd09b
AM		 7257 bfd_boolean dyn;
7258
411e1bfb 7259 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7260 Undefined weak syms won't yet be marked as dynamic,
7261 nor will all TLS symbols. */
411e1bfb 7262 if (h->dynindx == -1
f5385ebf 7263 && !h->forced_local)
411e1bfb 7264 {
c152c796 7265 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7266 return FALSE;
7267 }
65f38f15 7268
d881513a 7269 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7270 && !h->def_dynamic)
411e1bfb 7271 {
e717da7e 7272 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7273 continue;
411e1bfb 7274 }
951fd09b 7275
e717da7e 7276 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7277 gent->got.offset = s->size;
7278 s->size
d881513a 7279 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7280 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7281 if ((info->shared
7282 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7283 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7284 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7285 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7286 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7287 ? 2 * sizeof (Elf64_External_Rela)
7288 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7289 }
7290 else
7291 gent->got.offset = (bfd_vma) -1;
65f38f15 7292
65f38f15 7293 if (eh->dyn_relocs == NULL)
b34976b6 7294 return TRUE;
65f38f15
AM		 7295
7296 /* In the shared -Bsymbolic case, discard space allocated for
7297 dynamic pc-relative relocs against symbols which turn out to be
7298 defined in regular objects. For the normal shared case, discard
7299 space for relocs that have become local due to symbol visibility
7300 changes. */
7301
7302 if (info->shared)
7303 {
9c7a29a3
AM		 7304 /* Relocs that use pc_count are those that appear on a call insn,
7305 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7306 generated via assembly. We want calls to protected symbols to
7307 resolve directly to the function rather than going via the plt.
7308 If people want function pointer comparisons to work as expected
7309 then they should avoid writing weird assembly. */
09695f56 7310 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7311 {
7312 struct ppc_dyn_relocs **pp;
7313
7314 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7315 {
65f38f15
AM		 7316 p->count -= p->pc_count;
7317 p->pc_count = 0;
7318 if (p->count == 0)
7319 *pp = p->next;
7320 else
7321 pp = &p->next;
5bd4f169 7322 }
65f38f15 7323 }
4e795f50
AM		 7324
7325 /* Also discard relocs on undefined weak syms with non-default
7326 visibility. */
7327 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7328 && h->root.type == bfd_link_hash_undefweak)
7329 eh->dyn_relocs = NULL;
65f38f15 7330 }
f4656909 7331 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7332 {
7333 /* For the non-shared case, discard space for relocs against
7334 symbols which turn out to need copy relocs or are not
7335 dynamic. */
7336
f5385ebf
AM		 7337 if (!h->non_got_ref
7338 && h->def_dynamic
7339 && !h->def_regular)
65f38f15
AM		 7340 {
7341 /* Make sure this symbol is output as a dynamic symbol.
7342 Undefined weak syms won't yet be marked as dynamic. */
7343 if (h->dynindx == -1
f5385ebf 7344 && !h->forced_local)
65f38f15 7345 {
c152c796 7346 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7347 return FALSE;
65f38f15
AM		 7348 }
7349
7350 /* If that succeeded, we know we'll be keeping all the
7351 relocs. */
7352 if (h->dynindx != -1)
7353 goto keep;
7354 }
7355
7356 eh->dyn_relocs = NULL;
7357
ec338859 7358 keep: ;
65f38f15
AM		 7359 }
7360
7361 /* Finally, allocate space. */
7362 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7363 {
7364 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7365 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7366 }
7367
b34976b6 7368 return TRUE;
65f38f15
AM		 7369}
7370
7371/* Find any dynamic relocs that apply to read-only sections. */
7372
b34976b6 7373static bfd_boolean
4ce794b7 7374readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7375{
7376 struct ppc_link_hash_entry *eh;
7377 struct ppc_dyn_relocs *p;
7378
e92d460e
AM		 7379 if (h->root.type == bfd_link_hash_warning)
7380 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7381
65f38f15
AM		 7382 eh = (struct ppc_link_hash_entry *) h;
7383 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7384 {
7385 asection *s = p->sec->output_section;
7386
7387 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7388 {
4ce794b7 7389 struct bfd_link_info *info = inf;
65f38f15
AM		 7390
7391 info->flags |= DF_TEXTREL;
7392
7393 /* Not an error, just cut short the traversal. */
b34976b6 7394 return FALSE;
65f38f15
AM		 7395 }
7396 }
b34976b6 7397 return TRUE;
65f38f15
AM		 7398}
7399
7400/* Set the sizes of the dynamic sections. */
7401
b34976b6 7402static bfd_boolean
4ce794b7
AM		 7403ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7404 struct bfd_link_info *info)
65f38f15
AM		 7405{
7406 struct ppc_link_hash_table *htab;
7407 bfd *dynobj;
7408 asection *s;
b34976b6 7409 bfd_boolean relocs;
65f38f15
AM		 7410 bfd *ibfd;
7411
7412 htab = ppc_hash_table (info);
7413 dynobj = htab->elf.dynobj;
7414 if (dynobj == NULL)
7415 abort ();
7416
7417 if (htab->elf.dynamic_sections_created)
7418 {
7419 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7420 if (info->executable)
65f38f15
AM		 7421 {
7422 s = bfd_get_section_by_name (dynobj, ".interp");
7423 if (s == NULL)
7424 abort ();
eea6121a 7425 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 7426 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7427 }
7428 }
7429
7430 /* Set up .got offsets for local syms, and space for local dynamic
7431 relocs. */
7432 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7433 {
411e1bfb
AM		 7434 struct got_entry **lgot_ents;
7435 struct got_entry **end_lgot_ents;
e7b938ca 7436 char *lgot_masks;
65f38f15
AM		 7437 bfd_size_type locsymcount;
7438 Elf_Internal_Shdr *symtab_hdr;
7439 asection *srel;
7440
ee75fd95 7441 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM		 7442 continue;
7443
e717da7e
AM		 7444 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7445 {
7446 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM		 7447 ppc64_tlsld_got (ibfd)->offset = s->size;
7448 s->size += 16;
e717da7e
AM		 7449 if (info->shared)
7450 {
7451 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7452 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM		 7453 }
7454 }
7455 else
7456 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7457
65f38f15
AM		 7458 for (s = ibfd->sections; s != NULL; s = s->next)
7459 {
ec338859 7460 struct ppc_dyn_relocs *p;
65f38f15 7461
ec338859
AM		 7462 for (p = *((struct ppc_dyn_relocs **)
7463 &elf_section_data (s)->local_dynrel);
7464 p != NULL;
7465 p = p->next)
65f38f15 7466 {
ec338859
AM		 7467 if (!bfd_is_abs_section (p->sec)
7468 && bfd_is_abs_section (p->sec->output_section))
7469 {
7470 /* Input section has been discarded, either because
7471 it is a copy of a linkonce section or due to
7472 linker script /DISCARD/, so we'll be discarding
7473 the relocs too. */
7474 }
248866a8 7475 else if (p->count != 0)
ec338859
AM		 7476 {
7477 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7478 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 7479 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7480 info->flags |= DF_TEXTREL;
ec338859 7481 }
65f38f15
AM		 7482 }
7483 }
7484
411e1bfb
AM		 7485 lgot_ents = elf_local_got_ents (ibfd);
7486 if (!lgot_ents)
65f38f15
AM		 7487 continue;
7488
7489 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7490 locsymcount = symtab_hdr->sh_info;
411e1bfb 7491 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7492 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 7493 s = ppc64_elf_tdata (ibfd)->got;
7494 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7495 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7496 {
411e1bfb
AM		 7497 struct got_entry *ent;
7498
7499 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7500 if (ent->got.refcount > 0)
7501 {
e7b938ca 7502 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7503 {
e717da7e 7504 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7505 {
eea6121a
AM		 7506 ppc64_tlsld_got (ibfd)->offset = s->size;
7507 s->size += 16;
411e1bfb 7508 if (info->shared)
eea6121a 7509 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7510 }
e717da7e 7511 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM		 7512 }
7513 else
7514 {
eea6121a 7515 ent->got.offset = s->size;
e7b938ca 7516 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7517 {
eea6121a 7518 s->size += 16;
411e1bfb 7519 if (info->shared)
eea6121a 7520 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 7521 }
7522 else
7523 {
eea6121a 7524 s->size += 8;
411e1bfb 7525 if (info->shared)
eea6121a 7526 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7527 }
7528 }
7529 }
7530 else
7531 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 7532 }
7533 }
7534
7535 /* Allocate global sym .plt and .got entries, and space for global
7536 sym dynamic relocs. */
4ce794b7 7537 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM		 7538
7539 /* We now have determined the sizes of the various dynamic sections.
7540 Allocate memory for them. */
b34976b6 7541 relocs = FALSE;
65f38f15
AM		 7542 for (s = dynobj->sections; s != NULL; s = s->next)
7543 {
7544 if ((s->flags & SEC_LINKER_CREATED) == 0)
7545 continue;
7546
4ce794b7 7547 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 7548 /* These haven't been allocated yet; don't strip. */
7549 continue;
e717da7e
AM		 7550 else if (s == htab->got
7551 || s == htab->plt
4ce794b7 7552 || s == htab->glink)
65f38f15
AM		 7553 {
7554 /* Strip this section if we don't need it; see the
7555 comment below. */
5bd4f169 7556 }
65f38f15 7557 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169 7558 {
eea6121a 7559 if (s->size == 0)
5bd4f169
AM		 7560 {
7561 /* If we don't need this section, strip it from the
7562 output file. This is mostly to handle .rela.bss and
7563 .rela.plt. We must create both sections in
7564 create_dynamic_sections, because they must be created
7565 before the linker maps input sections to output
7566 sections. The linker does that before
7567 adjust_dynamic_symbol is called, and it is that
7568 function which decides whether anything needs to go
7569 into these sections. */
5bd4f169
AM		 7570 }
7571 else
7572 {
4ce794b7 7573 if (s != htab->relplt)
b34976b6 7574 relocs = TRUE;
5bd4f169
AM		 7575
7576 /* We use the reloc_count field as a counter if we need
7577 to copy relocs into the output file. */
7578 s->reloc_count = 0;
7579 }
7580 }
65f38f15 7581 else
5bd4f169
AM		 7582 {
7583 /* It's not one of our sections, so don't allocate space. */
7584 continue;
7585 }
7586
eea6121a 7587 if (s->size == 0)
5bd4f169
AM		 7588 {
7589 _bfd_strip_section_from_output (info, s);
7590 continue;
7591 }
7592
5f333394 7593 /* .plt is in the bss section. We don't initialise it. */
680a3378 7594 if (s == htab->plt)
5f333394
AM		 7595 continue;
7596
65f38f15
AM		 7597 /* Allocate memory for the section contents. We use bfd_zalloc
7598 here in case unused entries are not reclaimed before the
7599 section's contents are written out. This should not happen,
411e1bfb
AM		 7600 but this way if it does we get a R_PPC64_NONE reloc in .rela
7601 sections instead of garbage.
7602 We also rely on the section contents being zero when writing
7603 the GOT. */
eea6121a 7604 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 7605 if (s->contents == NULL)
b34976b6 7606 return FALSE;
5bd4f169
AM		 7607 }
7608
e717da7e
AM		 7609 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7610 {
ee75fd95 7611 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM		 7612 continue;
7613
e717da7e
AM		 7614 s = ppc64_elf_tdata (ibfd)->got;
7615 if (s != NULL && s != htab->got)
7616 {
eea6121a 7617 if (s->size == 0)
e717da7e
AM		 7618 _bfd_strip_section_from_output (info, s);
7619 else
7620 {
eea6121a 7621 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7622 if (s->contents == NULL)
7623 return FALSE;
7624 }
7625 }
7626 s = ppc64_elf_tdata (ibfd)->relgot;
7627 if (s != NULL)
7628 {
eea6121a 7629 if (s->size == 0)
e717da7e
AM		 7630 _bfd_strip_section_from_output (info, s);
7631 else
7632 {
eea6121a 7633 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 7634 if (s->contents == NULL)
7635 return FALSE;
7636 relocs = TRUE;
7637 s->reloc_count = 0;
7638 }
7639 }
7640 }
7641
e86ce104 7642 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 7643 {
7644 /* Add some entries to the .dynamic section. We fill in the
7645 values later, in ppc64_elf_finish_dynamic_sections, but we
7646 must add the entries now so that we get the correct size for
7647 the .dynamic section. The DT_DEBUG entry is filled in by the
7648 dynamic linker and used by the debugger. */
dc810e39 7649#define add_dynamic_entry(TAG, VAL) \
5a580b3a 7650 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 7651
36af4a4e 7652 if (info->executable)
5bd4f169 7653 {
dc810e39 7654 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 7655 return FALSE;
5bd4f169
AM		 7656 }
7657
eea6121a 7658 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 7659 {
dc810e39
AM		 7660 if (!add_dynamic_entry (DT_PLTGOT, 0)
7661 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7662 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 7663 || !add_dynamic_entry (DT_JMPREL, 0)
7664 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 7665 return FALSE;
5bd4f169
AM		 7666 }
7667
19397422
AM		 7668 if (NO_OPD_RELOCS)
7669 {
7670 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7671 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 7672 return FALSE;
19397422
AM		 7673 }
7674
5bd4f169
AM		 7675 if (relocs)
7676 {
dc810e39
AM		 7677 if (!add_dynamic_entry (DT_RELA, 0)
7678 || !add_dynamic_entry (DT_RELASZ, 0)
7679 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 7680 return FALSE;
5bd4f169 7681
65f38f15
AM		 7682 /* If any dynamic relocs apply to a read-only section,
7683 then we need a DT_TEXTREL entry. */
248866a8 7684 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 7685 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 7686
65f38f15 7687 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 7688 {
65f38f15 7689 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 7690 return FALSE;
5bd4f169 7691 }
5bd4f169 7692 }
5bd4f169 7693 }
65f38f15 7694#undef add_dynamic_entry
5bd4f169 7695
b34976b6 7696 return TRUE;
5bd4f169
AM		 7697}
7698
721956f4 7699/* Determine the type of stub needed, if any, for a call. */
5bd4f169 7700
4ce794b7
AM		 7701static inline enum ppc_stub_type
7702ppc_type_of_stub (asection *input_sec,
7703 const Elf_Internal_Rela *rel,
7704 struct ppc_link_hash_entry **hash,
7705 bfd_vma destination)
5bd4f169 7706{
721956f4
AM		 7707 struct ppc_link_hash_entry *h = *hash;
7708 bfd_vma location;
7709 bfd_vma branch_offset;
7710 bfd_vma max_branch_offset;
4ce794b7 7711 enum elf_ppc64_reloc_type r_type;
5bd4f169 7712
721956f4
AM		 7713 if (h != NULL)
7714 {
7715 if (h->oh != NULL
8387904d
AM		 7716 && h->oh->is_func_descriptor)
7717 h = h->oh;
7718
7719 if (h->elf.dynindx != -1)
5bd4f169 7720 {
411e1bfb 7721 struct plt_entry *ent;
8387904d
AM		 7722
7723 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 7724 if (ent->addend == rel->r_addend
7725 && ent->plt.offset != (bfd_vma) -1)
7726 {
8387904d 7727 *hash = h;
411e1bfb
AM		 7728 return ppc_stub_plt_call;
7729 }
5bd4f169
AM		 7730 }
7731
ee7de3e6
AM		 7732 if (!(h->elf.root.type == bfd_link_hash_defined
7733 || h->elf.root.type == bfd_link_hash_defweak)
7734 || h->elf.root.u.def.section->output_section == NULL)
721956f4 7735 return ppc_stub_none;
5d1634d7 7736 }
5d1634d7 7737
721956f4
AM		 7738 /* Determine where the call point is. */
7739 location = (input_sec->output_offset
7740 + input_sec->output_section->vma
7741 + rel->r_offset);
5d1634d7 7742
721956f4
AM		 7743 branch_offset = destination - location;
7744 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 7745
721956f4
AM		 7746 /* Determine if a long branch stub is needed. */
7747 max_branch_offset = 1 << 25;
4ce794b7 7748 if (r_type != R_PPC64_REL24)
721956f4 7749 max_branch_offset = 1 << 15;
5d1634d7 7750
721956f4
AM		 7751 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7752 /* We need a stub. Figure out whether a long_branch or plt_branch
7753 is needed later. */
7754 return ppc_stub_long_branch;
5d1634d7 7755
721956f4 7756 return ppc_stub_none;
5d1634d7
AM		 7757}
7758
7759/* Build a .plt call stub. */
7760
4ce794b7
AM		 7761static inline bfd_byte *
7762build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM		 7763{
7764#define PPC_LO(v) ((v) & 0xffff)
7765#define PPC_HI(v) (((v) >> 16) & 0xffff)
7766#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7767
5d1634d7 7768 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 7769 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM		 7770 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7771 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7772 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7773 offset += 8;
7774 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7775 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 7776 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM		 7777 offset += 8;
7778 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7779 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7780 bfd_put_32 (obfd, BCTR, p), p += 4;
7781 return p;
7782}
7783
b34976b6 7784static bfd_boolean
4ce794b7 7785ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 7786{
721956f4
AM		 7787 struct ppc_stub_hash_entry *stub_entry;
7788 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 7789 struct bfd_link_info *info;
7790 struct ppc_link_hash_table *htab;
721956f4
AM		 7791 bfd_byte *loc;
7792 bfd_byte *p;
7793 unsigned int indx;
411e1bfb 7794 struct plt_entry *ent;
ee75fd95 7795 bfd_vma dest, off;
721956f4 7796 int size;
5d1634d7 7797
721956f4
AM		 7798 /* Massage our args to the form they really have. */
7799 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 7800 info = in_arg;
5d1634d7 7801
5d1634d7
AM		 7802 htab = ppc_hash_table (info);
7803
721956f4 7804 /* Make a note of the offset within the stubs for this entry. */
eea6121a 7805 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 7806 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 7807
4ce794b7 7808 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 7809 switch (stub_entry->stub_type)
5d1634d7 7810 {
721956f4 7811 case ppc_stub_long_branch:
ad8e1ba5 7812 case ppc_stub_long_branch_r2off:
721956f4 7813 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 7814 off = dest = (stub_entry->target_value
7815 + stub_entry->target_section->output_offset
7816 + stub_entry->target_section->output_section->vma);
5d1634d7 7817
721956f4
AM		 7818 /* And this is where we are coming from. */
7819 off -= (stub_entry->stub_offset
97b639ba
AM		 7820 + stub_entry->stub_sec->output_offset
7821 + stub_entry->stub_sec->output_section->vma);
e86ce104 7822
ad8e1ba5
AM		 7823 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7824 size = 4;
7825 else
7826 {
7827 bfd_vma r2off;
7828
7829 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7830 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7831 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7832 loc += 4;
97b639ba 7833 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7834 loc += 4;
97b639ba 7835 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7836 loc += 4;
7837 off -= 12;
7838 size = 16;
7839 }
97b639ba 7840 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5
AM		 7841
7842 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
ee75fd95
AM		 7843
7844 if (info->emitrelocations)
7845 {
7846 Elf_Internal_Rela *relocs, *r;
7847 struct bfd_elf_section_data *elfsec_data;
7848
7849 elfsec_data = elf_section_data (stub_entry->stub_sec);
7850 relocs = elfsec_data->relocs;
7851 if (relocs == NULL)
7852 {
7853 bfd_size_type relsize;
7854 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7855 relocs = bfd_alloc (htab->stub_bfd, relsize);
7856 if (relocs == NULL)
7857 return FALSE;
7858 elfsec_data->relocs = relocs;
7859 elfsec_data->rel_hdr.sh_size = relsize;
7860 elfsec_data->rel_hdr.sh_entsize = 24;
7861 stub_entry->stub_sec->reloc_count = 0;
7862 }
7863 r = relocs + stub_entry->stub_sec->reloc_count;
7864 stub_entry->stub_sec->reloc_count += 1;
7865 r->r_offset = loc - stub_entry->stub_sec->contents;
7866 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7867 r->r_addend = dest;
7868 if (stub_entry->h != NULL)
7869 {
7870 struct elf_link_hash_entry **hashes;
7871 unsigned long symndx;
7872 struct ppc_link_hash_entry *h;
7873
7874 hashes = elf_sym_hashes (htab->stub_bfd);
7875 if (hashes == NULL)
7876 {
7877 bfd_size_type hsize;
7878
7879 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7880 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7881 if (hashes == NULL)
7882 return FALSE;
7883 elf_sym_hashes (htab->stub_bfd) = hashes;
7884 htab->stub_globals = 1;
7885 }
7886 symndx = htab->stub_globals++;
7887 h = stub_entry->h;
7888 hashes[symndx] = &h->elf;
7889 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7890 if (h->oh != NULL && h->oh->is_func)
7891 h = h->oh;
7892 if (h->elf.root.u.def.section != stub_entry->target_section)
7893 /* H is an opd symbol. The addend must be zero. */
7894 r->r_addend = 0;
7895 else
7896 {
7897 off = (h->elf.root.u.def.value
7898 + h->elf.root.u.def.section->output_offset
7899 + h->elf.root.u.def.section->output_section->vma);
7900 r->r_addend -= off;
7901 }
7902 }
7903 }
721956f4 7904 break;
e86ce104 7905
721956f4 7906 case ppc_stub_plt_branch:
ad8e1ba5 7907 case ppc_stub_plt_branch_r2off:
721956f4
AM		 7908 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7909 stub_entry->root.string + 9,
b34976b6 7910 FALSE, FALSE);
721956f4
AM		 7911 if (br_entry == NULL)
7912 {
7913 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7914 stub_entry->root.string + 9);
b34976b6
AM		 7915 htab->stub_error = TRUE;
7916 return FALSE;
721956f4
AM		 7917 }
7918
7919 off = (stub_entry->target_value
7920 + stub_entry->target_section->output_offset
7921 + stub_entry->target_section->output_section->vma);
7922
4ce794b7
AM		 7923 bfd_put_64 (htab->brlt->owner, off,
7924 htab->brlt->contents + br_entry->offset);
721956f4 7925
ee75fd95 7926 if (htab->relbrlt != NULL)
721956f4
AM		 7927 {
7928 /* Create a reloc for the branch lookup table entry. */
7929 Elf_Internal_Rela rela;
ad8e1ba5 7930 bfd_byte *rl;
5d1634d7 7931
721956f4 7932 rela.r_offset = (br_entry->offset
4ce794b7
AM		 7933 + htab->brlt->output_offset
7934 + htab->brlt->output_section->vma);
721956f4
AM		 7935 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7936 rela.r_addend = off;
7937
4ce794b7
AM		 7938 rl = htab->relbrlt->contents;
7939 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7940 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4
AM		 7941 }
7942
7943 off = (br_entry->offset
4ce794b7
AM		 7944 + htab->brlt->output_offset
7945 + htab->brlt->output_section->vma
7946 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 7947 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 7948
ad8e1ba5 7949 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 7950 {
7951 (*_bfd_error_handler)
e86ce104 7952 (_("linkage table error against `%s'"),
721956f4 7953 stub_entry->root.string);
5d1634d7 7954 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 7955 htab->stub_error = TRUE;
7956 return FALSE;
5d1634d7 7957 }
41bd81ab 7958
721956f4 7959 indx = off;
ad8e1ba5
AM		 7960 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7961 {
97b639ba 7962 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 7963 loc += 4;
97b639ba 7964 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM		 7965 size = 16;
7966 }
7967 else
7968 {
7969 bfd_vma r2off;
7970
7971 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7972 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 7973 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 7974 loc += 4;
97b639ba 7975 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 7976 loc += 4;
97b639ba 7977 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 7978 loc += 4;
97b639ba 7979 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 7980 loc += 4;
97b639ba 7981 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 7982 size = 28;
7983 }
7984 loc += 4;
97b639ba 7985 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 7986 loc += 4;
97b639ba 7987 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 7988 break;
5d1634d7 7989
721956f4 7990 case ppc_stub_plt_call:
c862ae31
AM		 7991 /* Do the best we can for shared libraries built without
7992 exporting ".foo" for each "foo". This can happen when symbol
7993 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 7994 if (stub_entry->h->oh != NULL
7995 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 7996 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 7997 {
7998 /* Point the symbol at the stub. There may be multiple stubs,
7999 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8000 defined somewhere. Maybe defining the symbol in the stub
8001 section is a silly idea. If we didn't do this, htab->top_id
8002 could disappear. */
34814b9f
AM		 8003 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8004 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8005 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8006 }
8007
721956f4 8008 /* Now build the stub. */
411e1bfb
AM		 8009 off = (bfd_vma) -1;
8010 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8011 if (ent->addend == stub_entry->addend)
8012 {
8013 off = ent->plt.offset;
8014 break;
8015 }
721956f4
AM		 8016 if (off >= (bfd_vma) -2)
8017 abort ();
8018
8019 off &= ~ (bfd_vma) 1;
4ce794b7
AM		 8020 off += (htab->plt->output_offset
8021 + htab->plt->output_section->vma
8022 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8023 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8024
ad8e1ba5 8025 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8026 {
8027 (*_bfd_error_handler)
8028 (_("linkage table error against `%s'"),
8029 stub_entry->h->elf.root.root.string);
8030 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8031 htab->stub_error = TRUE;
8032 return FALSE;
721956f4
AM		 8033 }
8034
97b639ba 8035 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM		 8036 size = p - loc;
8037 break;
8038
8039 default:
8040 BFD_FAIL ();
b34976b6 8041 return FALSE;
721956f4
AM		 8042 }
8043
eea6121a 8044 stub_entry->stub_sec->size += size;
97b639ba 8045
ee75fd95 8046 if (htab->emit_stub_syms)
97b639ba
AM		 8047 {
8048 struct elf_link_hash_entry *h;
ee75fd95
AM		 8049 size_t len1, len2;
8050 char *name;
8051 const char *const stub_str[] = { "long_branch",
8052 "long_branch_r2off",
8053 "plt_branch",
8054 "plt_branch_r2off",
8055 "plt_call" };
8056
8057 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8058 len2 = strlen (stub_entry->root.string);
8059 name = bfd_malloc (len1 + len2 + 2);
8060 if (name == NULL)
8061 return FALSE;
8062 memcpy (name, stub_entry->root.string, 9);
8063 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8064 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8065 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8066 if (h == NULL)
8067 return FALSE;
8068 if (h->root.type == bfd_link_hash_new)
8069 {
8070 h->root.type = bfd_link_hash_defined;
8071 h->root.u.def.section = stub_entry->stub_sec;
8072 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8073 h->ref_regular = 1;
8074 h->def_regular = 1;
8075 h->ref_regular_nonweak = 1;
8076 h->forced_local = 1;
8077 h->non_elf = 0;
97b639ba
AM		 8078 }
8079 }
8080
b34976b6 8081 return TRUE;
721956f4
AM		 8082}
8083
8084/* As above, but don't actually build the stub. Just bump offset so
8085 we know stub section sizes, and select plt_branch stubs where
8086 long_branch stubs won't do. */
8087
b34976b6 8088static bfd_boolean
4ce794b7 8089ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8090{
8091 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8092 struct bfd_link_info *info;
721956f4
AM		 8093 struct ppc_link_hash_table *htab;
8094 bfd_vma off;
8095 int size;
8096
8097 /* Massage our args to the form they really have. */
8098 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8099 info = in_arg;
8100
8101 htab = ppc_hash_table (info);
721956f4
AM		 8102
8103 if (stub_entry->stub_type == ppc_stub_plt_call)
8104 {
411e1bfb 8105 struct plt_entry *ent;
58ac9f71 8106 off = (bfd_vma) -1;
411e1bfb
AM		 8107 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8108 if (ent->addend == stub_entry->addend)
8109 {
8110 off = ent->plt.offset & ~(bfd_vma) 1;
8111 break;
8112 }
58ac9f71 8113 if (off >= (bfd_vma) -2)
411e1bfb 8114 abort ();
4ce794b7
AM		 8115 off += (htab->plt->output_offset
8116 + htab->plt->output_section->vma
8117 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8118 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8119
ad8e1ba5 8120 size = PLT_CALL_STUB_SIZE;
4ce794b7 8121 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM		 8122 size += 4;
8123 }
8124 else
8125 {
ad8e1ba5
AM		 8126 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8127 variants. */
721956f4
AM		 8128 off = (stub_entry->target_value
8129 + stub_entry->target_section->output_offset
8130 + stub_entry->target_section->output_section->vma);
eea6121a 8131 off -= (stub_entry->stub_sec->size
721956f4
AM		 8132 + stub_entry->stub_sec->output_offset
8133 + stub_entry->stub_sec->output_section->vma);
8134
ad8e1ba5
AM		 8135 /* Reset the stub type from the plt variant in case we now
8136 can reach with a shorter stub. */
8137 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8138 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8139
8140 size = 4;
8141 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8142 {
8143 off -= 12;
8144 size = 16;
8145 }
8146
8147 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8148 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8149 {
8150 struct ppc_branch_hash_entry *br_entry;
8151
8152 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8153 stub_entry->root.string + 9,
b34976b6 8154 TRUE, FALSE);
721956f4
AM		 8155 if (br_entry == NULL)
8156 {
8157 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8158 stub_entry->root.string + 9);
b34976b6
AM		 8159 htab->stub_error = TRUE;
8160 return FALSE;
721956f4
AM		 8161 }
8162
8163 if (br_entry->iter != htab->stub_iteration)
8164 {
8165 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8166 br_entry->offset = htab->brlt->size;
8167 htab->brlt->size += 8;
63bc6f6c 8168
ee75fd95 8169 if (htab->relbrlt != NULL)
eea6121a 8170 htab->relbrlt->size += sizeof (Elf64_External_Rela);
721956f4 8171 }
ad8e1ba5
AM		 8172
8173 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8174 size = 16;
ad8e1ba5
AM		 8175 if (stub_entry->stub_type != ppc_stub_plt_branch)
8176 size = 28;
721956f4 8177 }
ee75fd95
AM		 8178
8179 if (info->emitrelocations
8180 && (stub_entry->stub_type == ppc_stub_long_branch
8181 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8182 stub_entry->stub_sec->reloc_count += 1;
721956f4
AM		 8183 }
8184
eea6121a 8185 stub_entry->stub_sec->size += size;
b34976b6 8186 return TRUE;
721956f4
AM		 8187}
8188
8189/* Set up various things so that we can make a list of input sections
8190 for each output section included in the link. Returns -1 on error,
cedb70c5 8191 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 8192
8193int
4c52953f
AM		 8194ppc64_elf_setup_section_lists (bfd *output_bfd,
8195 struct bfd_link_info *info,
8196 int no_multi_toc)
721956f4
AM		 8197{
8198 bfd *input_bfd;
734b6cf9 8199 int top_id, top_index, id;
721956f4 8200 asection *section;
734b6cf9 8201 asection **input_list;
721956f4
AM		 8202 bfd_size_type amt;
8203 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8204
4c52953f
AM		 8205 htab->no_multi_toc = no_multi_toc;
8206
4ce794b7 8207 if (htab->brlt == NULL)
721956f4
AM		 8208 return 0;
8209
1e2f5b6e 8210 /* Find the top input section id. */
3d6f9012 8211 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 8212 input_bfd != NULL;
8213 input_bfd = input_bfd->link_next)
8214 {
721956f4
AM		 8215 for (section = input_bfd->sections;
8216 section != NULL;
8217 section = section->next)
8218 {
8219 if (top_id < section->id)
8220 top_id = section->id;
8221 }
8222 }
721956f4 8223
8f3bab57 8224 htab->top_id = top_id;
721956f4 8225 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8226 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 8227 if (htab->stub_group == NULL)
8228 return -1;
8229
3d6f9012
AM		 8230 /* Set toc_off for com, und, abs and ind sections. */
8231 for (id = 0; id < 3; id++)
8232 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8233
3d6f9012 8234 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 8235
8236 /* We can't use output_bfd->section_count here to find the top output
8237 section index as some sections may have been removed, and
8238 _bfd_strip_section_from_output doesn't renumber the indices. */
8239 for (section = output_bfd->sections, top_index = 0;
8240 section != NULL;
8241 section = section->next)
8242 {
8243 if (top_index < section->index)
8244 top_index = section->index;
8245 }
8246
8247 htab->top_index = top_index;
8248 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8249 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 8250 htab->input_list = input_list;
8251 if (input_list == NULL)
8252 return -1;
8253
721956f4
AM		 8254 return 1;
8255}
8256
e717da7e
AM		 8257/* The linker repeatedly calls this function for each TOC input section
8258 and linker generated GOT section. Group input bfds such that the toc
8259 within a group is less than 64k in size. Will break with cute linker
8260 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 8261
8262void
4ce794b7 8263ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 8264{
8265 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8266
4c52953f
AM		 8267 if (!htab->no_multi_toc)
8268 {
8269 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8270 bfd_vma off = addr - htab->toc_curr;
8271
8272 if (off + isec->size > 0x10000)
8273 htab->toc_curr = addr;
99877b66 8274
4c52953f
AM		 8275 elf_gp (isec->owner) = (htab->toc_curr
8276 - elf_gp (isec->output_section->owner)
8277 + TOC_BASE_OFF);
8278 }
ad8e1ba5
AM		 8279}
8280
8281/* Called after the last call to the above function. */
8282
8283void
4c52953f 8284ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 8285{
8286 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8287
4c52953f
AM		 8288 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8289
ad8e1ba5
AM		 8290 /* toc_curr tracks the TOC offset used for code sections below in
8291 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8292 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 8293}
8294
9b5ecbd0
AM		 8295/* No toc references were found in ISEC. If the code in ISEC makes no
8296 calls, then there's no need to use toc adjusting stubs when branching
8297 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 8298 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8299 needed, and 2 if a cyclical call-graph was found but no other reason
8300 for a stub was detected. If called from the top level, a return of
8301 2 means the same as a return of 0. */
9b5ecbd0
AM		 8302
8303static int
4ce794b7 8304toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8305{
4c52953f
AM		 8306 Elf_Internal_Rela *relstart, *rel;
8307 Elf_Internal_Sym *local_syms;
9b5ecbd0 8308 int ret;
4c52953f 8309 struct ppc_link_hash_table *htab;
9b5ecbd0 8310
772119ce
AM		 8311 /* We know none of our code bearing sections will need toc stubs. */
8312 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8313 return 0;
8314
eea6121a 8315 if (isec->size == 0)
082c50f8
AM		 8316 return 0;
8317
4c52953f
AM		 8318 if (isec->output_section == NULL)
8319 return 0;
8320
9b5ecbd0
AM		 8321 /* Hack for linux kernel. .fixup contains branches, but only back to
8322 the function that hit an exception. */
4c52953f
AM		 8323 if (strcmp (isec->name, ".fixup") == 0)
8324 return 0;
9b5ecbd0 8325
4c52953f
AM		 8326 if (isec->reloc_count == 0)
8327 return 0;
8328
8329 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8330 info->keep_memory);
8331 if (relstart == NULL)
8332 return -1;
8333
8334 /* Look for branches to outside of this section. */
8335 local_syms = NULL;
8336 ret = 0;
8337 htab = ppc_hash_table (info);
8338 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8339 {
4c52953f
AM		 8340 enum elf_ppc64_reloc_type r_type;
8341 unsigned long r_symndx;
8342 struct elf_link_hash_entry *h;
8343 Elf_Internal_Sym *sym;
8344 asection *sym_sec;
8345 long *opd_adjust;
8346 bfd_vma sym_value;
8347 bfd_vma dest;
8348
8349 r_type = ELF64_R_TYPE (rel->r_info);
8350 if (r_type != R_PPC64_REL24
8351 && r_type != R_PPC64_REL14
8352 && r_type != R_PPC64_REL14_BRTAKEN
8353 && r_type != R_PPC64_REL14_BRNTAKEN)
8354 continue;
8355
8356 r_symndx = ELF64_R_SYM (rel->r_info);
8357 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8358 isec->owner))
9b5ecbd0 8359 {
4c52953f
AM		 8360 ret = -1;
8361 break;
9b5ecbd0 8362 }
9b5ecbd0 8363
2917689a
AM		 8364 /* Calls to dynamic lib functions go through a plt call stub
8365 that uses r2. Branches to undefined symbols might be a call
8366 using old-style dot symbols that can be satisfied by a plt
8367 call into a new-style dynamic library. */
4c52953f 8368 if (sym_sec == NULL)
2917689a
AM		 8369 {
8370 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8371 if (eh != NULL
8372 && eh->oh != NULL
8373 && eh->oh->elf.plt.plist != NULL)
8374 {
8375 ret = 1;
8376 break;
8377 }
4c52953f 8378
2917689a
AM		 8379 /* Ignore other undefined symbols. */
8380 continue;
8381 }
8382
8383 /* Assume branches to other sections not included in the link need
8384 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 8385 if (sym_sec->output_section == NULL)
8386 {
8387 ret = 1;
8388 break;
8389 }
8390
8391 if (h == NULL)
8392 sym_value = sym->st_value;
8393 else
8394 {
8395 if (h->root.type != bfd_link_hash_defined
8396 && h->root.type != bfd_link_hash_defweak)
8397 abort ();
8398 sym_value = h->root.u.def.value;
8399 }
8400 sym_value += rel->r_addend;
8401
8402 /* If this branch reloc uses an opd sym, find the code section. */
8403 opd_adjust = get_opd_info (sym_sec);
8404 if (opd_adjust != NULL)
8405 {
4c52953f
AM		 8406 if (h == NULL)
8407 {
8408 long adjust;
8409
8410 adjust = opd_adjust[sym->st_value / 8];
8411 if (adjust == -1)
8412 /* Assume deleted functions won't ever be called. */
8413 continue;
8414 sym_value += adjust;
8415 }
8416
8417 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8418 if (dest == (bfd_vma) -1)
8419 continue;
8420 }
8421 else
8422 dest = (sym_value
8423 + sym_sec->output_offset
8424 + sym_sec->output_section->vma);
8425
8426 /* Ignore branch to self. */
8427 if (sym_sec == isec)
8428 continue;
8429
8430 /* If the called function uses the toc, we need a stub. */
8431 if (sym_sec->has_toc_reloc
8432 || sym_sec->makes_toc_func_call)
8433 {
8434 ret = 1;
8435 break;
8436 }
8437
8438 /* Assume any branch that needs a long branch stub might in fact
8439 need a plt_branch stub. A plt_branch stub uses r2. */
8440 else if (dest - (isec->output_offset
8441 + isec->output_section->vma
8442 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 8443 {
8444 ret = 1;
8445 break;
8446 }
4c52953f
AM		 8447
8448 /* If calling back to a section in the process of being tested, we
8449 can't say for sure that no toc adjusting stubs are needed, so
8450 don't return zero. */
8451 else if (sym_sec->call_check_in_progress)
8452 ret = 2;
8453
8454 /* Branches to another section that itself doesn't have any TOC
8455 references are OK. Recursively call ourselves to check. */
8456 else if (sym_sec->id <= htab->top_id
8457 && htab->stub_group[sym_sec->id].toc_off == 0)
8458 {
8459 int recur;
8460
8461 /* Mark current section as indeterminate, so that other
8462 sections that call back to current won't be marked as
8463 known. */
8464 isec->call_check_in_progress = 1;
8465 recur = toc_adjusting_stub_needed (info, sym_sec);
8466 isec->call_check_in_progress = 0;
8467
8468 if (recur < 0)
8469 {
8470 /* An error. Exit. */
8471 ret = -1;
8472 break;
8473 }
8474 else if (recur <= 1)
8475 {
8476 /* Known result. Mark as checked and set section flag. */
8477 htab->stub_group[sym_sec->id].toc_off = 1;
8478 if (recur != 0)
8479 {
8480 sym_sec->makes_toc_func_call = 1;
8481 ret = 1;
8482 break;
8483 }
8484 }
8485 else
8486 {
8487 /* Unknown result. Continue checking. */
8488 ret = 2;
8489 }
8490 }
9b5ecbd0
AM		 8491 }
8492
4c52953f
AM		 8493 if (local_syms != NULL
8494 && (elf_tdata (isec->owner)->symtab_hdr.contents
8495 != (unsigned char *) local_syms))
8496 free (local_syms);
8497 if (elf_section_data (isec)->relocs != relstart)
8498 free (relstart);
8499
9b5ecbd0
AM		 8500 return ret;
8501}
8502
721956f4
AM		 8503/* The linker repeatedly calls this function for each input section,
8504 in the order that input sections are linked into output sections.
8505 Build lists of input sections to determine groupings between which
8506 we may insert linker stubs. */
8507
9b5ecbd0 8508bfd_boolean
4ce794b7 8509ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 8510{
8511 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8512
734b6cf9
AM		 8513 if ((isec->output_section->flags & SEC_CODE) != 0
8514 && isec->output_section->index <= htab->top_index)
721956f4 8515 {
734b6cf9 8516 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8517 /* Steal the link_sec pointer for our list. */
721956f4 8518#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 8519 /* This happens to make the list in reverse order,
8520 which is what we want. */
734b6cf9
AM		 8521 PREV_SEC (isec) = *list;
8522 *list = isec;
721956f4 8523 }
ad8e1ba5 8524
4c52953f 8525 if (htab->multi_toc_needed)
9b5ecbd0 8526 {
4c52953f
AM		 8527 /* If a code section has a function that uses the TOC then we need
8528 to use the right TOC (obviously). Also, make sure that .opd gets
8529 the correct TOC value for R_PPC64_TOC relocs that don't have or
8530 can't find their function symbol (shouldn't ever happen now). */
8531 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8532 {
8533 if (elf_gp (isec->owner) != 0)
8534 htab->toc_curr = elf_gp (isec->owner);
8535 }
8536 else if (htab->stub_group[isec->id].toc_off == 0)
8537 {
8538 int ret = toc_adjusting_stub_needed (info, isec);
8539 if (ret < 0)
8540 return FALSE;
8541 else
8542 isec->makes_toc_func_call = ret & 1;
8543 }
9b5ecbd0 8544 }
ad8e1ba5
AM		 8545
8546 /* Functions that don't use the TOC can belong in any TOC group.
8547 Use the last TOC base. This happens to make _init and _fini
8548 pasting work. */
8549 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 8550 return TRUE;
721956f4
AM		 8551}
8552
8553/* See whether we can group stub sections together. Grouping stub
8554 sections may result in fewer stubs. More importantly, we need to
8555 put all .init* and .fini* stubs at the beginning of the .init or
8556 .fini output sections respectively, because glibc splits the
8557 _init and _fini functions into multiple parts. Putting a stub in
8558 the middle of a function is not a good idea. */
8559
8560static void
4ce794b7
AM		 8561group_sections (struct ppc_link_hash_table *htab,
8562 bfd_size_type stub_group_size,
8563 bfd_boolean stubs_always_before_branch)
721956f4 8564{
734b6cf9
AM		 8565 asection **list = htab->input_list + htab->top_index;
8566 do
721956f4 8567 {
734b6cf9
AM		 8568 asection *tail = *list;
8569 while (tail != NULL)
721956f4 8570 {
734b6cf9
AM		 8571 asection *curr;
8572 asection *prev;
8573 bfd_size_type total;
8574 bfd_boolean big_sec;
8575 bfd_vma curr_toc;
8576
8577 curr = tail;
eea6121a 8578 total = tail->size;
734b6cf9
AM		 8579 big_sec = total >= stub_group_size;
8580 curr_toc = htab->stub_group[tail->id].toc_off;
8581
8582 while ((prev = PREV_SEC (curr)) != NULL
8583 && ((total += curr->output_offset - prev->output_offset)
ad8e1ba5
AM		 8584 < stub_group_size)
8585 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 8586 curr = prev;
8587
8588 /* OK, the size from the start of CURR to the end is less
8589 than stub_group_size and thus can be handled by one stub
8590 section. (or the tail section is itself larger than
8591 stub_group_size, in which case we may be toast.) We
8592 should really be keeping track of the total size of stubs
8593 added here, as stubs contribute to the final output
8594 section size. That's a little tricky, and this way will
8595 only break if stubs added make the total size more than
8596 2^25, ie. for the default stub_group_size, if stubs total
8597 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8598 do
721956f4
AM		 8599 {
8600 prev = PREV_SEC (tail);
734b6cf9 8601 /* Set up this stub group. */
721956f4
AM		 8602 htab->stub_group[tail->id].link_sec = curr;
8603 }
734b6cf9
AM		 8604 while (tail != curr && (tail = prev) != NULL);
8605
8606 /* But wait, there's more! Input sections up to stub_group_size
8607 bytes before the stub section can be handled by it too.
8608 Don't do this if we have a really large section after the
8609 stubs, as adding more stubs increases the chance that
8610 branches may not reach into the stub section. */
8611 if (!stubs_always_before_branch && !big_sec)
8612 {
8613 total = 0;
8614 while (prev != NULL
8615 && ((total += tail->output_offset - prev->output_offset)
8616 < stub_group_size)
8617 && htab->stub_group[prev->id].toc_off == curr_toc)
8618 {
8619 tail = prev;
8620 prev = PREV_SEC (tail);
8621 htab->stub_group[tail->id].link_sec = curr;
8622 }
8623 }
8624 tail = prev;
721956f4
AM		 8625 }
8626 }
734b6cf9
AM		 8627 while (list-- != htab->input_list);
8628 free (htab->input_list);
721956f4
AM		 8629#undef PREV_SEC
8630}
8631
721956f4
AM		 8632/* Determine and set the size of the stub section for a final link.
8633
8634 The basic idea here is to examine all the relocations looking for
8635 PC-relative calls to a target that is unreachable with a "bl"
8636 instruction. */
8637
b34976b6 8638bfd_boolean
4ce794b7 8639ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 8640 struct bfd_link_info *info,
8641 bfd_signed_vma group_size,
8642 asection *(*add_stub_section) (const char *, asection *),
8643 void (*layout_sections_again) (void))
721956f4
AM		 8644{
8645 bfd_size_type stub_group_size;
b34976b6 8646 bfd_boolean stubs_always_before_branch;
721956f4
AM		 8647 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8648
8649 /* Stash our params away. */
721956f4
AM		 8650 htab->add_stub_section = add_stub_section;
8651 htab->layout_sections_again = layout_sections_again;
8652 stubs_always_before_branch = group_size < 0;
8653 if (group_size < 0)
8654 stub_group_size = -group_size;
8655 else
8656 stub_group_size = group_size;
8657 if (stub_group_size == 1)
8658 {
8659 /* Default values. */
58ac9f71
AM		 8660 if (stubs_always_before_branch)
8661 {
8662 stub_group_size = 0x1e00000;
8663 if (htab->has_14bit_branch)
8664 stub_group_size = 0x7800;
8665 }
8666 else
8667 {
8668 stub_group_size = 0x1c00000;
8669 if (htab->has_14bit_branch)
8670 stub_group_size = 0x7000;
8671 }
721956f4
AM		 8672 }
8673
8674 group_sections (htab, stub_group_size, stubs_always_before_branch);
8675
721956f4
AM		 8676 while (1)
8677 {
8678 bfd *input_bfd;
8679 unsigned int bfd_indx;
8680 asection *stub_sec;
b34976b6 8681 bfd_boolean stub_changed;
721956f4
AM		 8682
8683 htab->stub_iteration += 1;
b34976b6 8684 stub_changed = FALSE;
721956f4
AM		 8685
8686 for (input_bfd = info->input_bfds, bfd_indx = 0;
8687 input_bfd != NULL;
8688 input_bfd = input_bfd->link_next, bfd_indx++)
8689 {
8690 Elf_Internal_Shdr *symtab_hdr;
8691 asection *section;
6cdc0ccc 8692 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 8693
8694 /* We'll need the symbol table in a second. */
8695 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8696 if (symtab_hdr->sh_info == 0)
8697 continue;
8698
721956f4
AM		 8699 /* Walk over each section attached to the input bfd. */
8700 for (section = input_bfd->sections;
8701 section != NULL;
8702 section = section->next)
8703 {
721956f4 8704 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 8705
8706 /* If there aren't any relocs, then there's nothing more
8707 to do. */
8708 if ((section->flags & SEC_RELOC) == 0
8709 || section->reloc_count == 0)
8710 continue;
8711
8712 /* If this section is a link-once section that will be
8713 discarded, then don't create any stubs. */
8714 if (section->output_section == NULL
8715 || section->output_section->owner != output_bfd)
8716 continue;
8717
1e2f5b6e
AM		 8718 /* Get the relocs. */
8719 internal_relocs
4ce794b7 8720 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 8721 info->keep_memory);
721956f4 8722 if (internal_relocs == NULL)
1e2f5b6e 8723 goto error_ret_free_local;
721956f4
AM		 8724
8725 /* Now examine each relocation. */
8726 irela = internal_relocs;
8727 irelaend = irela + section->reloc_count;
8728 for (; irela < irelaend; irela++)
8729 {
4ce794b7
AM		 8730 enum elf_ppc64_reloc_type r_type;
8731 unsigned int r_indx;
721956f4
AM		 8732 enum ppc_stub_type stub_type;
8733 struct ppc_stub_hash_entry *stub_entry;
8387904d 8734 asection *sym_sec, *code_sec;
721956f4
AM		 8735 bfd_vma sym_value;
8736 bfd_vma destination;
8843416a 8737 bfd_boolean ok_dest;
721956f4 8738 struct ppc_link_hash_entry *hash;
8387904d 8739 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 8740 struct elf_link_hash_entry *h;
8741 Elf_Internal_Sym *sym;
721956f4
AM		 8742 char *stub_name;
8743 const asection *id_sec;
8387904d 8744 long *opd_adjust;
721956f4
AM		 8745
8746 r_type = ELF64_R_TYPE (irela->r_info);
8747 r_indx = ELF64_R_SYM (irela->r_info);
8748
4ce794b7 8749 if (r_type >= R_PPC64_max)
721956f4
AM		 8750 {
8751 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 8752 goto error_ret_free_internal;
721956f4
AM		 8753 }
8754
8755 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 8756 if (r_type != R_PPC64_REL24
8757 && r_type != R_PPC64_REL14
8758 && r_type != R_PPC64_REL14_BRTAKEN
8759 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 8760 continue;
8761
8762 /* Now determine the call target, its name, value,
8763 section. */
411e1bfb
AM		 8764 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8765 r_indx, input_bfd))
8766 goto error_ret_free_internal;
8767 hash = (struct ppc_link_hash_entry *) h;
8768
8843416a 8769 ok_dest = FALSE;
8387904d 8770 fdh = NULL;
411e1bfb 8771 if (hash == NULL)
721956f4 8772 {
411e1bfb 8773 sym_value = sym->st_value;
8843416a 8774 ok_dest = TRUE;
721956f4
AM		 8775 }
8776 else
8777 {
411e1bfb 8778 sym_value = 0;
99877b66
AM		 8779 /* Recognise an old ABI func code entry sym, and
8780 use the func descriptor sym instead. */
8781 if (hash->elf.root.type == bfd_link_hash_undefweak
8387904d
AM		 8782 && hash->elf.root.root.string[0] == '.'
8783 && (fdh = get_fdh (hash, htab)) != NULL)
8784 {
8387904d
AM		 8785 if (fdh->elf.root.type == bfd_link_hash_defined
8786 || fdh->elf.root.type == bfd_link_hash_defweak)
8787 {
8788 sym_sec = fdh->elf.root.u.def.section;
8789 sym_value = fdh->elf.root.u.def.value;
8790 if (sym_sec->output_section != NULL)
8791 ok_dest = TRUE;
8792 }
99877b66
AM		 8793 else
8794 fdh = NULL;
8387904d
AM		 8795 }
8796 else if (hash->elf.root.type == bfd_link_hash_defined
8797 || hash->elf.root.type == bfd_link_hash_defweak)
721956f4 8798 {
721956f4
AM		 8799 sym_value = hash->elf.root.u.def.value;
8800 if (sym_sec->output_section != NULL)
8843416a 8801 ok_dest = TRUE;
721956f4
AM		 8802 }
8803 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8804 ;
8805 else if (hash->elf.root.type == bfd_link_hash_undefined)
8806 ;
8807 else
8808 {
8809 bfd_set_error (bfd_error_bad_value);
8810 goto error_ret_free_internal;
8811 }
8812 }
8813
8843416a
AM		 8814 destination = 0;
8815 if (ok_dest)
8816 {
8817 sym_value += irela->r_addend;
8818 destination = (sym_value
8819 + sym_sec->output_offset
8820 + sym_sec->output_section->vma);
8821 }
8822
8387904d
AM		 8823 code_sec = sym_sec;
8824 opd_adjust = get_opd_info (sym_sec);
8825 if (opd_adjust != NULL)
8826 {
8827 bfd_vma dest;
8828
8829 if (hash == NULL)
8830 {
3f764659 8831 long adjust = opd_adjust[sym_value / 8];
8387904d
AM		 8832 if (adjust == -1)
8833 continue;
8834 sym_value += adjust;
8835 }
8836 dest = opd_entry_value (sym_sec, sym_value,
8837 &code_sec, &sym_value);
8838 if (dest != (bfd_vma) -1)
8839 {
8840 destination = dest;
8841 if (fdh != NULL)
8842 {
8843 /* Fixup old ABI sym to point at code
8844 entry. */
99877b66 8845 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 8846 hash->elf.root.u.def.section = code_sec;
8847 hash->elf.root.u.def.value = sym_value;
8848 }
8849 }
8850 }
8851
721956f4
AM		 8852 /* Determine what (if any) linker stub is needed. */
8853 stub_type = ppc_type_of_stub (section, irela, &hash,
8854 destination);
ad8e1ba5
AM		 8855
8856 if (stub_type != ppc_stub_plt_call)
8857 {
8858 /* Check whether we need a TOC adjusting stub.
8859 Since the linker pastes together pieces from
8860 different object files when creating the
8861 _init and _fini functions, it may be that a
8862 call to what looks like a local sym is in
8863 fact a call needing a TOC adjustment. */
8387904d
AM		 8864 if (code_sec != NULL
8865 && code_sec->output_section != NULL
8866 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 8867 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 8868 && (code_sec->has_toc_reloc
8869 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 8870 stub_type = ppc_stub_long_branch_r2off;
8871 }
8872
721956f4
AM		 8873 if (stub_type == ppc_stub_none)
8874 continue;
8875
411e1bfb
AM		 8876 /* __tls_get_addr calls might be eliminated. */
8877 if (stub_type != ppc_stub_plt_call
8878 && hash != NULL
8387904d
AM		 8879 && (hash == htab->tls_get_addr
8880 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 8881 && section->has_tls_reloc
8882 && irela != internal_relocs)
8883 {
8884 /* Get tls info. */
e7b938ca 8885 char *tls_mask;
411e1bfb 8886
0d4792f7 8887 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 8888 irela - 1, input_bfd))
8889 goto error_ret_free_internal;
e7b938ca 8890 if (*tls_mask != 0)
411e1bfb
AM		 8891 continue;
8892 }
8893
721956f4
AM		 8894 /* Support for grouping stub sections. */
8895 id_sec = htab->stub_group[section->id].link_sec;
8896
8897 /* Get the name of this stub. */
8898 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8899 if (!stub_name)
8900 goto error_ret_free_internal;
8901
8902 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 8903 stub_name, FALSE, FALSE);
721956f4
AM		 8904 if (stub_entry != NULL)
8905 {
8906 /* The proper stub has already been created. */
8907 free (stub_name);
8908 continue;
8909 }
8910
8911 stub_entry = ppc_add_stub (stub_name, section, htab);
8912 if (stub_entry == NULL)
8913 {
8914 free (stub_name);
6cdc0ccc
AM		 8915 error_ret_free_internal:
8916 if (elf_section_data (section)->relocs == NULL)
8917 free (internal_relocs);
8918 error_ret_free_local:
8919 if (local_syms != NULL
8920 && (symtab_hdr->contents
8921 != (unsigned char *) local_syms))
8922 free (local_syms);
b34976b6 8923 return FALSE;
721956f4
AM		 8924 }
8925
ad8e1ba5 8926 stub_entry->stub_type = stub_type;
721956f4 8927 stub_entry->target_value = sym_value;
8387904d 8928 stub_entry->target_section = code_sec;
721956f4 8929 stub_entry->h = hash;
411e1bfb 8930 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 8931
8932 if (stub_entry->h != NULL)
8933 htab->stub_globals += 1;
8934
b34976b6 8935 stub_changed = TRUE;
721956f4
AM		 8936 }
8937
8938 /* We're done with the internal relocs, free them. */
6cdc0ccc 8939 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 8940 free (internal_relocs);
721956f4 8941 }
6cdc0ccc
AM		 8942
8943 if (local_syms != NULL
8944 && symtab_hdr->contents != (unsigned char *) local_syms)
8945 {
8946 if (!info->keep_memory)
8947 free (local_syms);
8948 else
8949 symtab_hdr->contents = (unsigned char *) local_syms;
8950 }
721956f4
AM		 8951 }
8952
8953 if (!stub_changed)
8954 break;
8955
8956 /* OK, we've added some stubs. Find out the new size of the
8957 stub sections. */
8958 for (stub_sec = htab->stub_bfd->sections;
8959 stub_sec != NULL;
8960 stub_sec = stub_sec->next)
e717da7e 8961 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95
AM		 8962 {
8963 stub_sec->size = 0;
8964 stub_sec->reloc_count = 0;
8965 }
eea6121a
AM		 8966
8967 htab->brlt->size = 0;
ee75fd95 8968 if (htab->relbrlt != NULL)
eea6121a 8969 htab->relbrlt->size = 0;
721956f4 8970
63bc6f6c 8971 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4
AM		 8972
8973 /* Ask the linker to do its stuff. */
8974 (*htab->layout_sections_again) ();
8975 }
8976
afbe61cf
AM		 8977 /* It would be nice to strip .branch_lt from the output if the
8978 section is empty, but it's too late. If we strip sections here,
8979 the dynamic symbol table is corrupted since the section symbol
8980 for the stripped section isn't written. */
721956f4 8981
b34976b6 8982 return TRUE;
721956f4
AM		 8983}
8984
8985/* Called after we have determined section placement. If sections
805fc799 8986 move, we'll be called again. Provide a value for TOCstart. */
721956f4 8987
805fc799 8988bfd_vma
4ce794b7 8989ppc64_elf_toc (bfd *obfd)
721956f4 8990{
805fc799
AM		 8991 asection *s;
8992 bfd_vma TOCstart;
721956f4 8993
805fc799
AM		 8994 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8995 order. The TOC starts where the first of these sections starts. */
8996 s = bfd_get_section_by_name (obfd, ".got");
8997 if (s == NULL)
8998 s = bfd_get_section_by_name (obfd, ".toc");
8999 if (s == NULL)
9000 s = bfd_get_section_by_name (obfd, ".tocbss");
9001 if (s == NULL)
9002 s = bfd_get_section_by_name (obfd, ".plt");
9003 if (s == NULL)
9004 {
9005 /* This may happen for
9006 o references to TOC base (SYM@toc / TOC[tc0]) without a
9007 .toc directive
9008 o bad linker script
9009 o --gc-sections and empty TOC sections
9010
9011 FIXME: Warn user? */
9012
9013 /* Look for a likely section. We probably won't even be
9014 using TOCstart. */
9015 for (s = obfd->sections; s != NULL; s = s->next)
9016 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9017 == (SEC_ALLOC | SEC_SMALL_DATA))
9018 break;
721956f4 9019 if (s == NULL)
805fc799
AM		 9020 for (s = obfd->sections; s != NULL; s = s->next)
9021 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9022 == (SEC_ALLOC | SEC_SMALL_DATA))
9023 break;
721956f4 9024 if (s == NULL)
805fc799
AM		 9025 for (s = obfd->sections; s != NULL; s = s->next)
9026 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9027 break;
721956f4 9028 if (s == NULL)
805fc799
AM		 9029 for (s = obfd->sections; s != NULL; s = s->next)
9030 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9031 break;
9032 }
721956f4 9033
805fc799
AM		 9034 TOCstart = 0;
9035 if (s != NULL)
9036 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9037
805fc799 9038 return TOCstart;
721956f4
AM		 9039}
9040
9041/* Build all the stubs associated with the current output file.
9042 The stubs are kept in a hash table attached to the main linker
9043 hash table. This function is called via gldelf64ppc_finish. */
9044
b34976b6 9045bfd_boolean
4ce794b7
AM		 9046ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9047 struct bfd_link_info *info,
9048 char **stats)
5d1634d7
AM		 9049{
9050 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9051 asection *stub_sec;
5d1634d7 9052 bfd_byte *p;
e717da7e 9053 int stub_sec_count = 0;
5d1634d7 9054
ad8e1ba5 9055 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9056
9057 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9058 for (stub_sec = htab->stub_bfd->sections;
9059 stub_sec != NULL;
9060 stub_sec = stub_sec->next)
eea6121a
AM		 9061 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9062 && stub_sec->size != 0)
e717da7e 9063 {
eea6121a
AM		 9064 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9065 if (stub_sec->contents == NULL)
9066 return FALSE;
9067 /* We want to check that built size is the same as calculated
9068 size. rawsize is a convenient location to use. */
9069 stub_sec->rawsize = stub_sec->size;
9070 stub_sec->size = 0;
e717da7e 9071 }
5d1634d7 9072
4ce794b7 9073 if (htab->plt != NULL)
5d1634d7 9074 {
9f951329 9075 unsigned int indx;
ad8e1ba5 9076 bfd_vma plt0;
9f951329 9077
721956f4 9078 /* Build the .glink plt call stub. */
4ce794b7
AM		 9079 plt0 = (htab->plt->output_section->vma
9080 + htab->plt->output_offset
9081 - (htab->glink->output_section->vma
9082 + htab->glink->output_offset
ad8e1ba5
AM		 9083 + GLINK_CALL_STUB_SIZE));
9084 if (plt0 + 0x80008000 > 0xffffffff)
721956f4 9085 {
ad8e1ba5
AM		 9086 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9087 bfd_set_error (bfd_error_bad_value);
9088 return FALSE;
721956f4 9089 }
721956f4 9090
97b639ba
AM		 9091 if (htab->emit_stub_syms)
9092 {
9093 struct elf_link_hash_entry *h;
9094 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9095 if (h == NULL)
9096 return FALSE;
9097 if (h->root.type == bfd_link_hash_new)
9098 {
9099 h->root.type = bfd_link_hash_defined;
9100 h->root.u.def.section = htab->glink;
9101 h->root.u.def.value = 0;
f5385ebf
AM		 9102 h->ref_regular = 1;
9103 h->def_regular = 1;
9104 h->ref_regular_nonweak = 1;
9105 h->forced_local = 1;
9106 h->non_elf = 0;
97b639ba
AM		 9107 }
9108 }
4ce794b7
AM		 9109 p = htab->glink->contents;
9110 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
ad8e1ba5 9111 p += 4;
4ce794b7 9112 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
ad8e1ba5 9113 p += 4;
4ce794b7 9114 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
ad8e1ba5 9115 p += 4;
4ce794b7 9116 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9117 p += 4;
4ce794b7 9118 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
ad8e1ba5 9119 p += 4;
4ce794b7 9120 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
ad8e1ba5 9121 p += 4;
4ce794b7 9122 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
ad8e1ba5 9123 p += 4;
4ce794b7 9124 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
ad8e1ba5 9125 p += 4;
4ce794b7 9126 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
ad8e1ba5 9127 p += 4;
4ce794b7 9128 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
ad8e1ba5 9129 p += 4;
4ce794b7 9130 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
ad8e1ba5 9131 p += 4;
4ce794b7 9132 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
ad8e1ba5 9133 p += 4;
4ce794b7 9134 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9135 p += 4;
4ce794b7 9136 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9137 p += 4;
4ce794b7 9138 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9139 p += 4;
4ce794b7 9140 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5
AM		 9141 p += 4;
9142
9f951329
AM		 9143 /* Build the .glink lazy link call stubs. */
9144 indx = 0;
eea6121a 9145 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9146 {
9147 if (indx < 0x8000)
9148 {
4ce794b7 9149 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9150 p += 4;
9151 }
9152 else
9153 {
4ce794b7 9154 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9155 p += 4;
4ce794b7 9156 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 9157 p += 4;
9158 }
4ce794b7
AM		 9159 bfd_put_32 (htab->glink->owner,
9160 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
a16d5acb 9161 indx++;
9f951329
AM		 9162 p += 4;
9163 }
eea6121a 9164 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9165 }
5d1634d7 9166
eea6121a 9167 if (htab->brlt->size != 0)
721956f4 9168 {
4ce794b7 9169 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9170 htab->brlt->size);
4ce794b7 9171 if (htab->brlt->contents == NULL)
b34976b6 9172 return FALSE;
721956f4 9173 }
ee75fd95 9174 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 9175 {
9176 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9177 htab->relbrlt->size);
63bc6f6c
AM		 9178 if (htab->relbrlt->contents == NULL)
9179 return FALSE;
9180 }
5d1634d7 9181
721956f4
AM		 9182 /* Build the stubs as directed by the stub hash table. */
9183 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9184
721956f4
AM		 9185 for (stub_sec = htab->stub_bfd->sections;
9186 stub_sec != NULL;
9187 stub_sec = stub_sec->next)
e717da7e
AM		 9188 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9189 {
9190 stub_sec_count += 1;
eea6121a 9191 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 9192 break;
9193 }
5d1634d7 9194
721956f4 9195 if (stub_sec != NULL
eea6121a 9196 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9197 {
b34976b6 9198 htab->stub_error = TRUE;
721956f4 9199 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9200 }
721956f4 9201
d2a300cf
AM		 9202 if (htab->stub_error)
9203 return FALSE;
9204
9205 if (stats != NULL)
9206 {
9207 *stats = bfd_malloc (500);
9208 if (*stats == NULL)
9209 return FALSE;
9210
ee75fd95 9211 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 9212 " branch %lu\n"
9213 " toc adjust %lu\n"
9214 " long branch %lu\n"
9215 " long toc adj %lu\n"
9216 " plt call %lu"),
e717da7e 9217 stub_sec_count,
ee75fd95 9218 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 9219 htab->stub_count[ppc_stub_long_branch - 1],
9220 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9221 htab->stub_count[ppc_stub_plt_branch - 1],
9222 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9223 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 9224 }
9225 return TRUE;
5bd4f169
AM		 9226}
9227
99877b66
AM		 9228/* This function undoes the changes made by add_symbol_adjust. */
9229
9230static bfd_boolean
9231undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9232{
9233 struct ppc_link_hash_entry *eh;
9234
9235 if (h->root.type == bfd_link_hash_indirect)
9236 return TRUE;
9237
9238 if (h->root.type == bfd_link_hash_warning)
9239 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9240
9241 eh = (struct ppc_link_hash_entry *) h;
9242 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9243 return TRUE;
9244
9245 eh->elf.root.type = bfd_link_hash_undefined;
9246 return TRUE;
9247}
9248
9249void
9250ppc64_elf_restore_symbols (struct bfd_link_info *info)
9251{
9252 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9253 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9254}
9255
5bd4f169
AM		 9256/* The RELOCATE_SECTION function is called by the ELF backend linker
9257 to handle the relocations for a section.
9258
9259 The relocs are always passed as Rela structures; if the section
9260 actually uses Rel structures, the r_addend field will always be
9261 zero.
9262
9263 This function is responsible for adjust the section contents as
9264 necessary, and (if using Rela relocs and generating a
1049f94e 9265 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 9266 necessary.
9267
9268 This function does not have to worry about setting the reloc
9269 address or the reloc symbol index.
9270
9271 LOCAL_SYMS is a pointer to the swapped in local symbols.
9272
9273 LOCAL_SECTIONS is an array giving the section in the input file
9274 corresponding to the st_shndx field of each local symbol.
9275
9276 The global hash table entry for the global symbols can be found
9277 via elf_sym_hashes (input_bfd).
9278
1049f94e 9279 When generating relocatable output, this function must handle
5bd4f169
AM		 9280 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9281 going to be the section symbol corresponding to the output
9282 section, which means that the addend must be adjusted
9283 accordingly. */
9284
b34976b6 9285static bfd_boolean
4ce794b7
AM		 9286ppc64_elf_relocate_section (bfd *output_bfd,
9287 struct bfd_link_info *info,
9288 bfd *input_bfd,
9289 asection *input_section,
9290 bfd_byte *contents,
9291 Elf_Internal_Rela *relocs,
9292 Elf_Internal_Sym *local_syms,
9293 asection **local_sections)
5bd4f169 9294{
65f38f15 9295 struct ppc_link_hash_table *htab;
5bd4f169
AM		 9296 Elf_Internal_Shdr *symtab_hdr;
9297 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 9298 Elf_Internal_Rela *rel;
9299 Elf_Internal_Rela *relend;
411e1bfb
AM		 9300 Elf_Internal_Rela outrel;
9301 bfd_byte *loc;
411e1bfb 9302 struct got_entry **local_got_ents;
5bd4f169 9303 bfd_vma TOCstart;
b34976b6
AM		 9304 bfd_boolean ret = TRUE;
9305 bfd_boolean is_opd;
96e0dda4 9306 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9307 bfd_boolean is_power4 = FALSE;
5bd4f169 9308
1049f94e 9309 if (info->relocatable)
b34976b6 9310 return TRUE;
b491616a 9311
65f38f15 9312 /* Initialize howto table if needed. */
5bd4f169 9313 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 9314 ppc_howto_init ();
9315
65f38f15 9316 htab = ppc_hash_table (info);
ee75fd95
AM		 9317
9318 /* Don't relocate stub sections. */
9319 if (input_section->owner == htab->stub_bfd)
9320 return TRUE;
9321
411e1bfb 9322 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9323 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 9324 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9325 sym_hashes = elf_sym_hashes (input_bfd);
f0abc2a1 9326 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
65f38f15 9327
5bd4f169
AM		 9328 rel = relocs;
9329 relend = relocs + input_section->reloc_count;
9330 for (; rel < relend; rel++)
9331 {
04c9666a 9332 enum elf_ppc64_reloc_type r_type;
5bd4f169
AM		 9333 bfd_vma addend;
9334 bfd_reloc_status_type r;
9335 Elf_Internal_Sym *sym;
9336 asection *sec;
039b3fef
AM		 9337 struct elf_link_hash_entry *h_elf;
9338 struct ppc_link_hash_entry *h;
9339 struct ppc_link_hash_entry *fdh;
5bd4f169 9340 const char *sym_name;
0d4792f7 9341 unsigned long r_symndx, toc_symndx;
951fd09b 9342 char tls_mask, tls_gd, tls_type;
0d4792f7 9343 char sym_type;
5bd4f169 9344 bfd_vma relocation;
b34976b6
AM		 9345 bfd_boolean unresolved_reloc;
9346 bfd_boolean warned;
50bc7936 9347 unsigned long insn, mask;
721956f4
AM		 9348 struct ppc_stub_hash_entry *stub_entry;
9349 bfd_vma max_br_offset;
9350 bfd_vma from;
5bd4f169 9351
4ce794b7 9352 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9353 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 9354
9355 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9356 symbol of the previous ADDR64 reloc. The symbol gives us the
9357 proper TOC base to use. */
9358 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9359 && rel != relocs
9360 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9361 && is_opd)
9362 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9363
4ce794b7
AM		 9364 sym = NULL;
9365 sec = NULL;
039b3fef 9366 h_elf = NULL;
4ce794b7 9367 sym_name = NULL;
b34976b6
AM		 9368 unresolved_reloc = FALSE;
9369 warned = FALSE;
65f38f15 9370
0b13192e 9371 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 9372 {
9373 /* It's a local symbol. */
4025353c
AM		 9374 long *opd_adjust;
9375
5bd4f169
AM		 9376 sym = local_syms + r_symndx;
9377 sec = local_sections[r_symndx];
be8dd2ca 9378 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
0d4792f7 9379 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9380 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM		 9381 opd_adjust = get_opd_info (sec);
9382 if (opd_adjust != NULL)
1e2f5b6e 9383 {
3f764659 9384 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 9385 if (adjust == -1)
9386 relocation = 0;
9387 else
9388 relocation += adjust;
1e2f5b6e 9389 }
5bd4f169
AM		 9390 }
9391 else
9392 {
b2a8e766
AM		 9393 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9394 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9395 h_elf, sec, relocation,
b2a8e766 9396 unresolved_reloc, warned);
039b3fef
AM		 9397 sym_name = h_elf->root.root.string;
9398 sym_type = h_elf->type;
5bd4f169 9399 }
039b3fef 9400 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9401
951fd09b
AM		 9402 /* TLS optimizations. Replace instruction sequences and relocs
9403 based on information we collected in tls_optimize. We edit
9404 RELOCS so that --emit-relocs will output something sensible
9405 for the final instruction stream. */
9406 tls_mask = 0;
9407 tls_gd = 0;
0d4792f7 9408 toc_symndx = 0;
d881513a 9409 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 9410 {
9411 if (h != NULL)
039b3fef 9412 tls_mask = h->tls_mask;
411e1bfb
AM		 9413 else if (local_got_ents != NULL)
9414 {
e7b938ca
AM		 9415 char *lgot_masks;
9416 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9417 tls_mask = lgot_masks[r_symndx];
411e1bfb 9418 }
0d4792f7
AM		 9419 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9420 {
9421 /* Check for toc tls entries. */
9422 char *toc_tls;
9423
9424 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9425 rel, input_bfd))
9426 return FALSE;
9427
9428 if (toc_tls)
9429 tls_mask = *toc_tls;
9430 }
9431 }
9432
9433 /* Check that tls relocs are used with tls syms, and non-tls
9434 relocs are used with non-tls syms. */
9435 if (r_symndx != 0
9436 && r_type != R_PPC64_NONE
9437 && (h == NULL
039b3fef
AM		 9438 || h->elf.root.type == bfd_link_hash_defined
9439 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM		 9440 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9441 {
9442 if (r_type == R_PPC64_TLS && tls_mask != 0)
9443 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9444 ;
9445 else
9446 (*_bfd_error_handler)
9447 (sym_type == STT_TLS
d003868e
AM		 9448 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9449 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9450 input_bfd,
9451 input_section,
0d4792f7
AM		 9452 (long) rel->r_offset,
9453 ppc64_elf_howto_table[r_type]->name,
9454 sym_name);
411e1bfb
AM		 9455 }
9456
9457 /* Ensure reloc mapping code below stays sane. */
9458 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9459 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9460 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9461 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9462 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9463 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9464 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9465 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9466 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9467 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9468 abort ();
0d4792f7 9469
411e1bfb
AM		 9470 switch (r_type)
9471 {
9472 default:
411e1bfb
AM		 9473 break;
9474
9475 case R_PPC64_TOC16:
9476 case R_PPC64_TOC16_LO:
9477 case R_PPC64_TOC16_DS:
9478 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 9479 {
9480 /* Check for toc tls entries. */
9481 char *toc_tls;
951fd09b 9482 int retval;
411e1bfb 9483
0d4792f7
AM		 9484 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9485 rel, input_bfd);
951fd09b 9486 if (retval == 0)
411e1bfb
AM		 9487 return FALSE;
9488
9489 if (toc_tls)
9490 {
951fd09b 9491 tls_mask = *toc_tls;
411e1bfb
AM		 9492 if (r_type == R_PPC64_TOC16_DS
9493 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 9494 {
9495 if (tls_mask != 0
9496 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9497 goto toctprel;
9498 }
411e1bfb 9499 else
951fd09b
AM		 9500 {
9501 /* If we found a GD reloc pair, then we might be
9502 doing a GD->IE transition. */
9503 if (retval == 2)
9504 {
9505 tls_gd = TLS_TPRELGD;
9506 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9507 goto tls_get_addr_check;
9508 }
9509 else if (retval == 3)
9510 {
9511 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9512 goto tls_get_addr_check;
9513 }
9514 }
411e1bfb
AM		 9515 }
9516 }
9517 break;
9518
9519 case R_PPC64_GOT_TPREL16_DS:
9520 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 9521 if (tls_mask != 0
9522 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9523 {
81407a69 9524 toctprel:
411e1bfb
AM		 9525 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9526 insn &= 31 << 21;
9527 insn |= 0x3c0d0000; /* addis 0,13,0 */
9528 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9529 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 9530 if (toc_symndx != 0)
9531 {
9532 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9533 /* We changed the symbol. Start over in order to
9534 get h, sym, sec etc. right. */
9535 rel--;
9536 continue;
9537 }
9538 else
9539 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9540 }
9541 break;
9542
9543 case R_PPC64_TLS:
951fd09b
AM		 9544 if (tls_mask != 0
9545 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 9546 {
50bc7936 9547 bfd_vma rtra;
411e1bfb 9548 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 9549 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 9550 == ((31 << 26) | (13 << 11)))
9551 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 9552 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 9553 == ((31 << 26) | (13 << 16)))
9554 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9555 else
9556 abort ();
9557 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9558 /* add -> addi. */
9559 insn = 14 << 26;
9560 else if ((insn & (31 << 1)) == 23 << 1
9561 && ((insn & (31 << 6)) < 14 << 6
9562 || ((insn & (31 << 6)) >= 16 << 6
9563 && (insn & (31 << 6)) < 24 << 6)))
9564 /* load and store indexed -> dform. */
9565 insn = (32 | ((insn >> 6) & 31)) << 26;
9566 else if ((insn & (31 << 1)) == 21 << 1
9567 && (insn & (0x1a << 6)) == 0)
9568 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9569 insn = (((58 | ((insn >> 6) & 4)) << 26)
9570 | ((insn >> 6) & 1));
9571 else if ((insn & (31 << 1)) == 21 << 1
9572 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9573 /* lwax -> lwa. */
9574 insn = (58 << 26) | 2;
9575 else
9576 abort ();
9577 insn |= rtra;
9578 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb
AM		 9579 /* Was PPC64_TLS which sits on insn boundary, now
9580 PPC64_TPREL16_LO which is at insn+2. */
9581 rel->r_offset += 2;
0d4792f7
AM		 9582 r_type = R_PPC64_TPREL16_LO;
9583 if (toc_symndx != 0)
9584 {
9585 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9586 /* We changed the symbol. Start over in order to
9587 get h, sym, sec etc. right. */
9588 rel--;
9589 continue;
9590 }
9591 else
9592 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9593 }
9594 break;
9595
411e1bfb
AM		 9596 case R_PPC64_GOT_TLSGD16_HI:
9597 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 9598 tls_gd = TLS_TPRELGD;
9599 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9600 goto tls_gdld_hi;
9601 break;
9602
411e1bfb
AM		 9603 case R_PPC64_GOT_TLSLD16_HI:
9604 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9605 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 9606 {
951fd09b
AM		 9607 tls_gdld_hi:
9608 if ((tls_mask & tls_gd) != 0)
9609 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9610 + R_PPC64_GOT_TPREL16_DS);
9611 else
411e1bfb 9612 {
951fd09b
AM		 9613 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9614 rel->r_offset -= 2;
9615 r_type = R_PPC64_NONE;
411e1bfb 9616 }
951fd09b 9617 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9618 }
9619 break;
9620
951fd09b
AM		 9621 case R_PPC64_GOT_TLSGD16:
9622 case R_PPC64_GOT_TLSGD16_LO:
9623 tls_gd = TLS_TPRELGD;
9624 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9625 goto tls_get_addr_check;
9626 break;
411e1bfb 9627
951fd09b
AM		 9628 case R_PPC64_GOT_TLSLD16:
9629 case R_PPC64_GOT_TLSLD16_LO:
9630 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9631 {
9632 tls_get_addr_check:
9633 if (rel + 1 < relend)
411e1bfb 9634 {
951fd09b
AM		 9635 enum elf_ppc64_reloc_type r_type2;
9636 unsigned long r_symndx2;
9637 struct elf_link_hash_entry *h2;
9638 bfd_vma insn1, insn2, insn3;
9639 bfd_vma offset;
9640
9641 /* The next instruction should be a call to
9642 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 9643 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM		 9644 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9645 if (r_symndx2 < symtab_hdr->sh_info
9646 || (r_type2 != R_PPC64_REL14
9647 && r_type2 != R_PPC64_REL14_BRTAKEN
9648 && r_type2 != R_PPC64_REL14_BRNTAKEN
9649 && r_type2 != R_PPC64_REL24))
9650 break;
9651
9652 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9653 while (h2->root.type == bfd_link_hash_indirect
9654 || h2->root.type == bfd_link_hash_warning)
9655 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM		 9656 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9657 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM		 9658 break;
9659
9660 /* OK, it checks out. Replace the call. */
9661 offset = rel[1].r_offset;
9662 insn1 = bfd_get_32 (output_bfd,
9663 contents + rel->r_offset - 2);
9664 insn3 = bfd_get_32 (output_bfd,
9665 contents + offset + 4);
9666 if ((tls_mask & tls_gd) != 0)
411e1bfb 9667 {
951fd09b
AM		 9668 /* IE */
9669 insn1 &= (1 << 26) - (1 << 2);
9670 insn1 |= 58 << 26; /* ld */
9671 insn2 = 0x7c636a14; /* add 3,3,13 */
9672 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9673 if ((tls_mask & TLS_EXPLICIT) == 0)
9674 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9675 + R_PPC64_GOT_TPREL16_DS);
9676 else
9677 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9678 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 9679 }
9680 else
951fd09b
AM		 9681 {
9682 /* LE */
9683 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9684 insn2 = 0x38630000; /* addi 3,3,0 */
9685 if (tls_gd == 0)
9686 {
9687 /* Was an LD reloc. */
9688 r_symndx = 0;
e1918d23
AM		 9689 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9690 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 9691 }
0d4792f7
AM		 9692 else if (toc_symndx != 0)
9693 r_symndx = toc_symndx;
951fd09b
AM		 9694 r_type = R_PPC64_TPREL16_HA;
9695 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9696 rel[1].r_info = ELF64_R_INFO (r_symndx,
9697 R_PPC64_TPREL16_LO);
9698 rel[1].r_offset += 2;
9699 }
9700 if (insn3 == NOP
9701 || insn3 == CROR_151515 || insn3 == CROR_313131)
9702 {
9703 insn3 = insn2;
9704 insn2 = NOP;
9705 rel[1].r_offset += 4;
9706 }
9707 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9708 bfd_put_32 (output_bfd, insn2, contents + offset);
9709 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 9710 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 9711 {
0d4792f7
AM		 9712 /* We changed the symbol. Start over in order
9713 to get h, sym, sec etc. right. */
951fd09b
AM		 9714 rel--;
9715 continue;
9716 }
411e1bfb 9717 }
411e1bfb 9718 }
411e1bfb
AM		 9719 break;
9720
9721 case R_PPC64_DTPMOD64:
951fd09b
AM		 9722 if (rel + 1 < relend
9723 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9724 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 9725 {
951fd09b
AM		 9726 if ((tls_mask & TLS_GD) == 0)
9727 {
9728 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9729 if ((tls_mask & TLS_TPRELGD) != 0)
9730 r_type = R_PPC64_TPREL64;
9731 else
9732 {
4ce794b7 9733 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 9734 r_type = R_PPC64_NONE;
9735 }
9736 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9737 }
9738 }
9739 else
9740 {
9741 if ((tls_mask & TLS_LD) == 0)
411e1bfb 9742 {
4ce794b7 9743 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 9744 r_type = R_PPC64_NONE;
951fd09b 9745 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 9746 }
411e1bfb
AM		 9747 }
9748 break;
9749
9750 case R_PPC64_TPREL64:
951fd09b 9751 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 9752 {
9753 r_type = R_PPC64_NONE;
9754 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9755 }
9756 break;
9757 }
9758
9759 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 9760 insn = 0;
b25116a9
AM		 9761 max_br_offset = 1 << 25;
9762 addend = rel->r_addend;
65f38f15 9763 switch (r_type)
5bd4f169
AM		 9764 {
9765 default:
65f38f15 9766 break;
5bd4f169 9767
65f38f15
AM		 9768 /* Branch taken prediction relocations. */
9769 case R_PPC64_ADDR14_BRTAKEN:
9770 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 9771 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9772 /* Fall thru. */
65f38f15 9773
86c76c7b 9774 /* Branch not taken prediction relocations. */
65f38f15
AM		 9775 case R_PPC64_ADDR14_BRNTAKEN:
9776 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 9777 insn |= bfd_get_32 (output_bfd,
9778 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 9779 /* Fall thru. */
86c76c7b 9780
b25116a9
AM		 9781 case R_PPC64_REL14:
9782 max_br_offset = 1 << 15;
9783 /* Fall thru. */
5bd4f169 9784
65f38f15 9785 case R_PPC64_REL24:
ad8e1ba5
AM		 9786 /* Calls to functions with a different TOC, such as calls to
9787 shared objects, need to alter the TOC pointer. This is
9788 done using a linkage stub. A REL24 branching to these
9789 linkage stubs needs to be followed by a nop, as the nop
9790 will be replaced with an instruction to restore the TOC
9791 base pointer. */
b25116a9 9792 stub_entry = NULL;
8387904d 9793 fdh = h;
ad8e1ba5 9794 if (((h != NULL
039b3fef
AM		 9795 && (((fdh = h->oh) != NULL
9796 && fdh->elf.plt.plist != NULL)
9797 || (fdh = h)->elf.plt.plist != NULL))
8387904d 9798 || (sec != NULL
ad8e1ba5 9799 && sec->output_section != NULL
b25116a9 9800 && sec->id <= htab->top_id
ad8e1ba5
AM		 9801 && (htab->stub_group[sec->id].toc_off
9802 != htab->stub_group[input_section->id].toc_off)))
721956f4 9803 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 9804 rel, htab)) != NULL
9805 && (stub_entry->stub_type == ppc_stub_plt_call
9806 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9807 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 9808 {
b25116a9 9809 bfd_boolean can_plt_call = FALSE;
721956f4 9810
eea6121a 9811 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 9812 {
b25116a9
AM		 9813 unsigned long nop;
9814 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9815 if (nop == NOP
9816 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 9817 {
4ce794b7 9818 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 9819 contents + rel->r_offset + 4);
b25116a9 9820 can_plt_call = TRUE;
41bd81ab 9821 }
5bd4f169 9822 }
721956f4
AM		 9823
9824 if (!can_plt_call)
9825 {
ad8e1ba5
AM		 9826 if (stub_entry->stub_type == ppc_stub_plt_call)
9827 {
9828 /* If this is a plain branch rather than a branch
9829 and link, don't require a nop. */
b25116a9
AM		 9830 unsigned long br;
9831 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9832 if ((br & 1) == 0)
9833 can_plt_call = TRUE;
ad8e1ba5 9834 }
6ab189d5 9835 else if (h != NULL
039b3fef 9836 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 9837 ".__libc_start_main") == 0)
9838 {
9839 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 9840 can_plt_call = TRUE;
6ab189d5 9841 }
ad8e1ba5
AM		 9842 else
9843 {
9844 if (strcmp (input_section->output_section->name,
9845 ".init") == 0
9846 || strcmp (input_section->output_section->name,
9847 ".fini") == 0)
9848 (*_bfd_error_handler)
d003868e 9849 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 9850 "not supported using your crt files; "
9851 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 9852 input_bfd,
9853 input_section,
ad8e1ba5
AM		 9854 (long) rel->r_offset);
9855 else
9856 (*_bfd_error_handler)
d003868e 9857 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 9858 "does not allow automatic multiple TOCs; "
9859 "recompile with -mminimal-toc or "
9860 "-fno-optimize-sibling-calls, "
9861 "or make `%s' extern"),
d003868e
AM		 9862 input_bfd,
9863 input_section,
ad8e1ba5
AM		 9864 (long) rel->r_offset,
9865 sym_name,
9866 sym_name);
9867 bfd_set_error (bfd_error_bad_value);
9868 ret = FALSE;
9869 }
721956f4
AM		 9870 }
9871
b25116a9
AM		 9872 if (can_plt_call
9873 && stub_entry->stub_type == ppc_stub_plt_call)
9874 unresolved_reloc = FALSE;
9875 }
9876
8387904d
AM		 9877 if (stub_entry == NULL
9878 && get_opd_info (sec) != NULL)
9879 {
9880 /* The branch destination is the value of the opd entry. */
9881 bfd_vma off = (relocation - sec->output_section->vma
9882 - sec->output_offset + rel->r_addend);
9883 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9884 if (dest != (bfd_vma) -1)
9885 {
9886 relocation = dest;
9887 addend = 0;
9888 }
9889 }
9890
b25116a9
AM		 9891 /* If the branch is out of reach we ought to have a long
9892 branch stub. */
9893 from = (rel->r_offset
9894 + input_section->output_offset
9895 + input_section->output_section->vma);
9896
9897 if (stub_entry == NULL
9898 && (relocation + rel->r_addend - from + max_br_offset
9899 >= 2 * max_br_offset)
9900 && r_type != R_PPC64_ADDR14_BRTAKEN
9901 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 9902 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9903 htab);
b25116a9
AM		 9904
9905 if (stub_entry != NULL)
9906 {
9907 /* Munge up the value and addend so that we call the stub
9908 rather than the procedure directly. */
9909 relocation = (stub_entry->stub_offset
9910 + stub_entry->stub_sec->output_offset
9911 + stub_entry->stub_sec->output_section->vma);
9912 addend = 0;
9913 }
9914
9915 if (insn != 0)
9916 {
9917 if (is_power4)
721956f4 9918 {
b25116a9
AM		 9919 /* Set 'a' bit. This is 0b00010 in BO field for branch
9920 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9921 for branch on CTR insns (BO == 1a00t or 1a01t). */
9922 if ((insn & (0x14 << 21)) == (0x04 << 21))
9923 insn |= 0x02 << 21;
9924 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9925 insn |= 0x08 << 21;
9926 else
9927 break;
9928 }
9929 else
9930 {
9931 /* Invert 'y' bit if not the default. */
9932 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9933 insn ^= 0x01 << 21;
721956f4 9934 }
b25116a9
AM		 9935
9936 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 9937 }
e86ce104 9938
06da1e8e
AM		 9939 /* NOP out calls to undefined weak functions.
9940 We can thus call a weak function without first
9941 checking whether the function is defined. */
b25116a9 9942 else if (h != NULL
039b3fef 9943 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 9944 && r_type == R_PPC64_REL24
9945 && relocation == 0
9946 && rel->r_addend == 0)
e86ce104 9947 {
06da1e8e
AM		 9948 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9949 continue;
e86ce104 9950 }
65f38f15
AM		 9951 break;
9952 }
5bd4f169 9953
65f38f15 9954 /* Set `addend'. */
411e1bfb 9955 tls_type = 0;
65f38f15
AM		 9956 switch (r_type)
9957 {
9958 default:
9959 (*_bfd_error_handler)
d003868e
AM		 9960 (_("%B: unknown relocation type %d for symbol %s"),
9961 input_bfd, (int) r_type, sym_name);
5bd4f169 9962
65f38f15 9963 bfd_set_error (bfd_error_bad_value);
b34976b6 9964 ret = FALSE;
65f38f15 9965 continue;
5bd4f169 9966
65f38f15 9967 case R_PPC64_NONE:
411e1bfb 9968 case R_PPC64_TLS:
04c9666a
AM		 9969 case R_PPC64_GNU_VTINHERIT:
9970 case R_PPC64_GNU_VTENTRY:
65f38f15 9971 continue;
5bd4f169
AM		 9972
9973 /* GOT16 relocations. Like an ADDR16 using the symbol's
9974 address in the GOT as relocation value instead of the
411e1bfb 9975 symbol's value itself. Also, create a GOT entry for the
5bd4f169 9976 symbol and put the symbol value there. */
411e1bfb
AM		 9977 case R_PPC64_GOT_TLSGD16:
9978 case R_PPC64_GOT_TLSGD16_LO:
9979 case R_PPC64_GOT_TLSGD16_HI:
9980 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 9981 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 9982 goto dogot;
9983
9984 case R_PPC64_GOT_TLSLD16:
9985 case R_PPC64_GOT_TLSLD16_LO:
9986 case R_PPC64_GOT_TLSLD16_HI:
9987 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 9988 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 9989 goto dogot;
9990
9991 case R_PPC64_GOT_TPREL16_DS:
9992 case R_PPC64_GOT_TPREL16_LO_DS:
9993 case R_PPC64_GOT_TPREL16_HI:
9994 case R_PPC64_GOT_TPREL16_HA:
9995 tls_type = TLS_TLS | TLS_TPREL;
9996 goto dogot;
9997
9998 case R_PPC64_GOT_DTPREL16_DS:
9999 case R_PPC64_GOT_DTPREL16_LO_DS:
10000 case R_PPC64_GOT_DTPREL16_HI:
10001 case R_PPC64_GOT_DTPREL16_HA:
10002 tls_type = TLS_TLS | TLS_DTPREL;
10003 goto dogot;
10004
65f38f15
AM		 10005 case R_PPC64_GOT16:
10006 case R_PPC64_GOT16_LO:
10007 case R_PPC64_GOT16_HI:
10008 case R_PPC64_GOT16_HA:
10009 case R_PPC64_GOT16_DS:
10010 case R_PPC64_GOT16_LO_DS:
411e1bfb 10011 dogot:
5bd4f169
AM		 10012 {
10013 /* Relocation is to the entry for this symbol in the global
10014 offset table. */
e717da7e 10015 asection *got;
d881513a 10016 bfd_vma *offp;
5bd4f169 10017 bfd_vma off;
d881513a 10018 unsigned long indx = 0;
65f38f15 10019
d881513a
AM		 10020 if (tls_type == (TLS_TLS | TLS_LD)
10021 && (h == NULL
f5385ebf 10022 || !h->elf.def_dynamic))
e717da7e 10023 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10024 else
5bd4f169 10025 {
d881513a 10026 struct got_entry *ent;
5bd4f169 10027
d881513a
AM		 10028 if (h != NULL)
10029 {
10030 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10031 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10032 &h->elf)
d881513a 10033 || (info->shared
039b3fef 10034 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10035 /* This is actually a static link, or it is a
10036 -Bsymbolic link and the symbol is defined
10037 locally, or the symbol was forced to be local
10038 because of a version file. */
10039 ;
10040 else
10041 {
039b3fef 10042 indx = h->elf.dynindx;
d881513a
AM		 10043 unresolved_reloc = FALSE;
10044 }
039b3fef 10045 ent = h->elf.got.glist;
d881513a 10046 }
411e1bfb 10047 else
5bd4f169 10048 {
d881513a
AM		 10049 if (local_got_ents == NULL)
10050 abort ();
10051 ent = local_got_ents[r_symndx];
5bd4f169 10052 }
d881513a
AM		 10053
10054 for (; ent != NULL; ent = ent->next)
10055 if (ent->addend == rel->r_addend
e717da7e 10056 && ent->owner == input_bfd
d881513a
AM		 10057 && ent->tls_type == tls_type)
10058 break;
10059 if (ent == NULL)
10060 abort ();
10061 offp = &ent->got.offset;
5bd4f169 10062 }
411e1bfb 10063
e717da7e
AM		 10064 got = ppc64_elf_tdata (input_bfd)->got;
10065 if (got == NULL)
10066 abort ();
10067
411e1bfb
AM		 10068 /* The offset must always be a multiple of 8. We use the
10069 least significant bit to record whether we have already
10070 processed this entry. */
d881513a 10071 off = *offp;
411e1bfb
AM		 10072 if ((off & 1) != 0)
10073 off &= ~1;
5bd4f169
AM		 10074 else
10075 {
411e1bfb
AM		 10076 /* Generate relocs for the dynamic linker, except in
10077 the case of TLSLD where we'll use one entry per
10078 module. */
e717da7e
AM		 10079 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10080
d881513a 10081 *offp = off | 1;
4e795f50
AM		 10082 if ((info->shared || indx != 0)
10083 && (h == NULL
039b3fef
AM		 10084 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10085 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10086 {
e717da7e
AM		 10087 outrel.r_offset = (got->output_section->vma
10088 + got->output_offset
411e1bfb 10089 + off);
81407a69 10090 outrel.r_addend = rel->r_addend;
d881513a 10091 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10092 {
411e1bfb 10093 outrel.r_addend = 0;
e515b051 10094 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10095 if (tls_type == (TLS_TLS | TLS_GD))
10096 {
e717da7e
AM		 10097 loc = relgot->contents;
10098 loc += (relgot->reloc_count++
d881513a
AM		 10099 * sizeof (Elf64_External_Rela));
10100 bfd_elf64_swap_reloca_out (output_bfd,
10101 &outrel, loc);
e515b051 10102 outrel.r_offset += 8;
81407a69 10103 outrel.r_addend = rel->r_addend;
d881513a
AM		 10104 outrel.r_info
10105 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10106 }
411e1bfb 10107 }
951fd09b 10108 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10109 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10110 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 10111 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10112 else if (indx == 0)
81407a69
AM		 10113 {
10114 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10115
10116 /* Write the .got section contents for the sake
10117 of prelink. */
e717da7e 10118 loc = got->contents + off;
23fbd6fa
JJ		 10119 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10120 loc);
81407a69 10121 }
411e1bfb
AM		 10122 else
10123 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 10124
10125 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 10126 {
10127 outrel.r_addend += relocation;
10128 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10129 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10130 }
e717da7e
AM		 10131 loc = relgot->contents;
10132 loc += (relgot->reloc_count++
411e1bfb
AM		 10133 * sizeof (Elf64_External_Rela));
10134 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10135 }
10136
ad8e1ba5 10137 /* Init the .got section contents here if we're not
81407a69 10138 emitting a reloc. */
d881513a 10139 else
411e1bfb 10140 {
d881513a 10141 relocation += rel->r_addend;
7b609f53
AM		 10142 if (tls_type == (TLS_TLS | TLS_LD))
10143 relocation = 1;
10144 else if (tls_type != 0)
411e1bfb 10145 {
e1918d23 10146 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10147 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10148 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10149
7b609f53
AM		 10150 if (tls_type == (TLS_TLS | TLS_GD))
10151 {
10152 bfd_put_64 (output_bfd, relocation,
e717da7e 10153 got->contents + off + 8);
7b609f53
AM		 10154 relocation = 1;
10155 }
411e1bfb 10156 }
7b609f53 10157
411e1bfb 10158 bfd_put_64 (output_bfd, relocation,
e717da7e 10159 got->contents + off);
5bd4f169
AM		 10160 }
10161 }
10162
65f38f15
AM		 10163 if (off >= (bfd_vma) -2)
10164 abort ();
10165
e717da7e 10166 relocation = got->output_offset + off;
65f38f15 10167
5bd4f169 10168 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10169 addend = -TOC_BASE_OFF;
5bd4f169 10170 }
65f38f15
AM		 10171 break;
10172
10173 case R_PPC64_PLT16_HA:
10174 case R_PPC64_PLT16_HI:
10175 case R_PPC64_PLT16_LO:
10176 case R_PPC64_PLT32:
10177 case R_PPC64_PLT64:
10178 /* Relocation is to the entry for this symbol in the
10179 procedure linkage table. */
10180
10181 /* Resolve a PLT reloc against a local symbol directly,
10182 without using the procedure linkage table. */
10183 if (h == NULL)
10184 break;
10185
411e1bfb
AM		 10186 /* It's possible that we didn't make a PLT entry for this
10187 symbol. This happens when statically linking PIC code,
10188 or when using -Bsymbolic. Go find a match if there is a
10189 PLT entry. */
4ce794b7 10190 if (htab->plt != NULL)
65f38f15 10191 {
411e1bfb 10192 struct plt_entry *ent;
039b3fef 10193 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 10194 if (ent->addend == rel->r_addend
10195 && ent->plt.offset != (bfd_vma) -1)
10196 {
4ce794b7
AM		 10197 relocation = (htab->plt->output_section->vma
10198 + htab->plt->output_offset
411e1bfb
AM		 10199 + ent->plt.offset);
10200 unresolved_reloc = FALSE;
10201 }
65f38f15 10202 }
65f38f15 10203 break;
5bd4f169 10204
0b13192e
AM		 10205 case R_PPC64_TOC:
10206 /* Relocation value is TOC base. */
10207 relocation = TOCstart;
10208 if (r_symndx == 0)
10209 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 10210 else if (unresolved_reloc)
10211 ;
10212 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 10213 relocation += htab->stub_group[sec->id].toc_off;
10214 else
10215 unresolved_reloc = TRUE;
10216 goto dodyn2;
10217
5bd4f169
AM		 10218 /* TOC16 relocs. We want the offset relative to the TOC base,
10219 which is the address of the start of the TOC plus 0x8000.
10220 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10221 in this order. */
65f38f15
AM		 10222 case R_PPC64_TOC16:
10223 case R_PPC64_TOC16_LO:
10224 case R_PPC64_TOC16_HI:
10225 case R_PPC64_TOC16_DS:
10226 case R_PPC64_TOC16_LO_DS:
10227 case R_PPC64_TOC16_HA:
ad8e1ba5 10228 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 10229 break;
10230
10231 /* Relocate against the beginning of the section. */
65f38f15
AM		 10232 case R_PPC64_SECTOFF:
10233 case R_PPC64_SECTOFF_LO:
10234 case R_PPC64_SECTOFF_HI:
10235 case R_PPC64_SECTOFF_DS:
10236 case R_PPC64_SECTOFF_LO_DS:
10237 case R_PPC64_SECTOFF_HA:
4ce794b7 10238 if (sec != NULL)
65f38f15 10239 addend -= sec->output_section->vma;
5bd4f169
AM		 10240 break;
10241
721956f4
AM		 10242 case R_PPC64_REL14:
10243 case R_PPC64_REL14_BRNTAKEN:
10244 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 10245 case R_PPC64_REL24:
10246 break;
10247
411e1bfb
AM		 10248 case R_PPC64_TPREL16:
10249 case R_PPC64_TPREL16_LO:
10250 case R_PPC64_TPREL16_HI:
10251 case R_PPC64_TPREL16_HA:
10252 case R_PPC64_TPREL16_DS:
10253 case R_PPC64_TPREL16_LO_DS:
10254 case R_PPC64_TPREL16_HIGHER:
10255 case R_PPC64_TPREL16_HIGHERA:
10256 case R_PPC64_TPREL16_HIGHEST:
10257 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10258 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10259 if (info->shared)
10260 /* The TPREL16 relocs shouldn't really be used in shared
10261 libs as they will result in DT_TEXTREL being set, but
10262 support them anyway. */
10263 goto dodyn;
10264 break;
10265
10266 case R_PPC64_DTPREL16:
10267 case R_PPC64_DTPREL16_LO:
10268 case R_PPC64_DTPREL16_HI:
10269 case R_PPC64_DTPREL16_HA:
10270 case R_PPC64_DTPREL16_DS:
10271 case R_PPC64_DTPREL16_LO_DS:
10272 case R_PPC64_DTPREL16_HIGHER:
10273 case R_PPC64_DTPREL16_HIGHERA:
10274 case R_PPC64_DTPREL16_HIGHEST:
10275 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10276 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10277 break;
10278
e515b051
AM		 10279 case R_PPC64_DTPMOD64:
10280 relocation = 1;
10281 addend = 0;
10282 goto dodyn;
10283
411e1bfb 10284 case R_PPC64_TPREL64:
e1918d23 10285 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 10286 goto dodyn;
10287
10288 case R_PPC64_DTPREL64:
e1918d23 10289 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 10290 /* Fall thru */
10291
65f38f15
AM		 10292 /* Relocations that may need to be propagated if this is a
10293 dynamic object. */
04c9666a 10294 case R_PPC64_REL30:
65f38f15
AM		 10295 case R_PPC64_REL32:
10296 case R_PPC64_REL64:
10297 case R_PPC64_ADDR14:
10298 case R_PPC64_ADDR14_BRNTAKEN:
10299 case R_PPC64_ADDR14_BRTAKEN:
10300 case R_PPC64_ADDR16:
10301 case R_PPC64_ADDR16_DS:
10302 case R_PPC64_ADDR16_HA:
10303 case R_PPC64_ADDR16_HI:
10304 case R_PPC64_ADDR16_HIGHER:
10305 case R_PPC64_ADDR16_HIGHERA:
10306 case R_PPC64_ADDR16_HIGHEST:
10307 case R_PPC64_ADDR16_HIGHESTA:
10308 case R_PPC64_ADDR16_LO:
10309 case R_PPC64_ADDR16_LO_DS:
10310 case R_PPC64_ADDR24:
65f38f15
AM		 10311 case R_PPC64_ADDR32:
10312 case R_PPC64_ADDR64:
10313 case R_PPC64_UADDR16:
10314 case R_PPC64_UADDR32:
10315 case R_PPC64_UADDR64:
ec338859
AM		 10316 /* r_symndx will be zero only for relocs against symbols
10317 from removed linkonce sections, or sections discarded by
10318 a linker script. */
411e1bfb 10319 dodyn:
5d1634d7
AM		 10320 if (r_symndx == 0)
10321 break;
10322 /* Fall thru. */
10323
0b13192e 10324 dodyn2:
5d1634d7 10325 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 10326 break;
10327
41bd81ab
AM		 10328 if (NO_OPD_RELOCS && is_opd)
10329 break;
10330
65f38f15 10331 if ((info->shared
4e795f50 10332 && (h == NULL
039b3fef
AM		 10333 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10334 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10335 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10336 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 10337 || (ELIMINATE_COPY_RELOCS
10338 && !info->shared
65f38f15 10339 && h != NULL
039b3fef 10340 && h->elf.dynindx != -1
f5385ebf
AM		 10341 && !h->elf.non_got_ref
10342 && h->elf.def_dynamic
10343 && !h->elf.def_regular))
65f38f15
AM		 10344 {
10345 Elf_Internal_Rela outrel;
b34976b6 10346 bfd_boolean skip, relocate;
65f38f15 10347 asection *sreloc;
947216bf 10348 bfd_byte *loc;
1cf1f670 10349 bfd_vma out_off;
65f38f15
AM		 10350
10351 /* When generating a dynamic object, these relocations
10352 are copied into the output file to be resolved at run
10353 time. */
10354
b34976b6
AM		 10355 skip = FALSE;
10356 relocate = FALSE;
65f38f15 10357
1cf1f670
AM		 10358 out_off = _bfd_elf_section_offset (output_bfd, info,
10359 input_section, rel->r_offset);
10360 if (out_off == (bfd_vma) -1)
b34976b6 10361 skip = TRUE;
1cf1f670 10362 else if (out_off == (bfd_vma) -2)
b34976b6 10363 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 10364 out_off += (input_section->output_section->vma
10365 + input_section->output_offset);
10366 outrel.r_offset = out_off;
411e1bfb 10367 outrel.r_addend = rel->r_addend;
65f38f15 10368
1cf1f670
AM		 10369 /* Optimize unaligned reloc use. */
10370 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10371 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10372 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10373 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10374 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10375 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10376 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10377 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10378 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10379
65f38f15 10380 if (skip)
0bb2d96a 10381 memset (&outrel, 0, sizeof outrel);
039b3fef 10382 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 10383 && !is_opd
10384 && r_type != R_PPC64_TOC)
039b3fef 10385 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 10386 else
10387 {
41bd81ab
AM		 10388 /* This symbol is local, or marked to become local,
10389 or this is an opd section reloc which must point
10390 at a local function. */
65f38f15 10391 outrel.r_addend += relocation;
e86ce104 10392 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10393 {
3fad3c7c 10394 if (is_opd && h != NULL)
afbe61cf
AM		 10395 {
10396 /* Lie about opd entries. This case occurs
10397 when building shared libraries and we
10398 reference a function in another shared
3fad3c7c
AM		 10399 lib. The same thing happens for a weak
10400 definition in an application that's
10401 overridden by a strong definition in a
10402 shared lib. (I believe this is a generic
10403 bug in binutils handling of weak syms.)
10404 In these cases we won't use the opd
1e2f5b6e 10405 entry in this lib. */
b34976b6 10406 unresolved_reloc = FALSE;
afbe61cf 10407 }
65f38f15 10408 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 10409
10410 /* We need to relocate .opd contents for ld.so.
10411 Prelink also wants simple and consistent rules
10412 for relocs. This make all RELATIVE relocs have
10413 *r_offset equal to r_addend. */
10414 relocate = TRUE;
65f38f15
AM		 10415 }
10416 else
10417 {
10418 long indx = 0;
10419
41bd81ab 10420 if (bfd_is_abs_section (sec))
65f38f15
AM		 10421 ;
10422 else if (sec == NULL || sec->owner == NULL)
10423 {
10424 bfd_set_error (bfd_error_bad_value);
b34976b6 10425 return FALSE;
65f38f15
AM		 10426 }
10427 else
10428 {
10429 asection *osec;
10430
10431 osec = sec->output_section;
10432 indx = elf_section_data (osec)->dynindx;
10433
10434 /* We are turning this relocation into one
10435 against a section symbol, so subtract out
10436 the output section's address but not the
10437 offset of the input section in the output
10438 section. */
10439 outrel.r_addend -= osec->vma;
10440 }
10441
10442 outrel.r_info = ELF64_R_INFO (indx, r_type);
10443 }
10444 }
10445
10446 sreloc = elf_section_data (input_section)->sreloc;
10447 if (sreloc == NULL)
10448 abort ();
10449
947216bf
AM		 10450 loc = sreloc->contents;
10451 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 10452 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10453
10454 /* If this reloc is against an external symbol, it will
10455 be computed at runtime, so there's no need to do
81407a69
AM		 10456 anything now. However, for the sake of prelink ensure
10457 that the section contents are a known value. */
65f38f15 10458 if (! relocate)
81407a69
AM		 10459 {
10460 unresolved_reloc = FALSE;
10461 /* The value chosen here is quite arbitrary as ld.so
10462 ignores section contents except for the special
10463 case of .opd where the contents might be accessed
10464 before relocation. Choose zero, as that won't
10465 cause reloc overflow. */
10466 relocation = 0;
10467 addend = 0;
10468 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10469 to improve backward compatibility with older
10470 versions of ld. */
10471 if (r_type == R_PPC64_ADDR64)
10472 addend = outrel.r_addend;
10473 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 10474 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 10475 addend = (input_section->output_section->vma
10476 + input_section->output_offset
10477 + rel->r_offset);
81407a69 10478 }
65f38f15 10479 }
5bd4f169
AM		 10480 break;
10481
65f38f15
AM		 10482 case R_PPC64_COPY:
10483 case R_PPC64_GLOB_DAT:
10484 case R_PPC64_JMP_SLOT:
10485 case R_PPC64_RELATIVE:
10486 /* We shouldn't ever see these dynamic relocs in relocatable
10487 files. */
ae9a127f 10488 /* Fall through. */
65f38f15
AM		 10489
10490 case R_PPC64_PLTGOT16:
10491 case R_PPC64_PLTGOT16_DS:
10492 case R_PPC64_PLTGOT16_HA:
10493 case R_PPC64_PLTGOT16_HI:
10494 case R_PPC64_PLTGOT16_LO:
10495 case R_PPC64_PLTGOT16_LO_DS:
10496 case R_PPC64_PLTREL32:
10497 case R_PPC64_PLTREL64:
10498 /* These ones haven't been implemented yet. */
10499
10500 (*_bfd_error_handler)
d003868e
AM		 10501 (_("%B: relocation %s is not supported for symbol %s."),
10502 input_bfd,
4ce794b7 10503 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 10504
10505 bfd_set_error (bfd_error_invalid_operation);
b34976b6 10506 ret = FALSE;
5bd4f169 10507 continue;
65f38f15 10508 }
5bd4f169 10509
65f38f15
AM		 10510 /* Do any further special processing. */
10511 switch (r_type)
10512 {
10513 default:
10514 break;
10515
10516 case R_PPC64_ADDR16_HA:
10517 case R_PPC64_ADDR16_HIGHERA:
10518 case R_PPC64_ADDR16_HIGHESTA:
86bbe32f
AM		 10519 case R_PPC64_GOT16_HA:
10520 case R_PPC64_PLTGOT16_HA:
65f38f15
AM		 10521 case R_PPC64_PLT16_HA:
10522 case R_PPC64_TOC16_HA:
10523 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 10524 case R_PPC64_TPREL16_HA:
10525 case R_PPC64_DTPREL16_HA:
10526 case R_PPC64_GOT_TLSGD16_HA:
10527 case R_PPC64_GOT_TLSLD16_HA:
10528 case R_PPC64_GOT_TPREL16_HA:
10529 case R_PPC64_GOT_DTPREL16_HA:
10530 case R_PPC64_TPREL16_HIGHER:
10531 case R_PPC64_TPREL16_HIGHERA:
10532 case R_PPC64_TPREL16_HIGHEST:
10533 case R_PPC64_TPREL16_HIGHESTA:
10534 case R_PPC64_DTPREL16_HIGHER:
10535 case R_PPC64_DTPREL16_HIGHERA:
10536 case R_PPC64_DTPREL16_HIGHEST:
10537 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 10538 /* It's just possible that this symbol is a weak symbol
10539 that's not actually defined anywhere. In that case,
10540 'sec' would be NULL, and we should leave the symbol
10541 alone (it will be set to zero elsewhere in the link). */
10542 if (sec != NULL)
e515b051
AM		 10543 /* Add 0x10000 if sign bit in 0:15 is set.
10544 Bits 0:15 are not used. */
10545 addend += 0x8000;
65f38f15
AM		 10546 break;
10547
10548 case R_PPC64_ADDR16_DS:
10549 case R_PPC64_ADDR16_LO_DS:
10550 case R_PPC64_GOT16_DS:
10551 case R_PPC64_GOT16_LO_DS:
10552 case R_PPC64_PLT16_LO_DS:
10553 case R_PPC64_SECTOFF_DS:
10554 case R_PPC64_SECTOFF_LO_DS:
10555 case R_PPC64_TOC16_DS:
10556 case R_PPC64_TOC16_LO_DS:
10557 case R_PPC64_PLTGOT16_DS:
10558 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 10559 case R_PPC64_GOT_TPREL16_DS:
10560 case R_PPC64_GOT_TPREL16_LO_DS:
10561 case R_PPC64_GOT_DTPREL16_DS:
10562 case R_PPC64_GOT_DTPREL16_LO_DS:
10563 case R_PPC64_TPREL16_DS:
10564 case R_PPC64_TPREL16_LO_DS:
10565 case R_PPC64_DTPREL16_DS:
10566 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 10567 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10568 mask = 3;
10569 /* If this reloc is against an lq insn, then the value must be
10570 a multiple of 16. This is somewhat of a hack, but the
10571 "correct" way to do this by defining _DQ forms of all the
10572 _DS relocs bloats all reloc switches in this file. It
10573 doesn't seem to make much sense to use any of these relocs
10574 in data, so testing the insn should be safe. */
494dac0c 10575 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 10576 mask = 15;
10577 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 10578 {
10579 (*_bfd_error_handler)
d003868e
AM		 10580 (_("%B: error: relocation %s not a multiple of %d"),
10581 input_bfd,
4ce794b7 10582 ppc64_elf_howto_table[r_type]->name,
adadcc0c 10583 mask + 1);
65f38f15 10584 bfd_set_error (bfd_error_bad_value);
b34976b6 10585 ret = FALSE;
65f38f15
AM		 10586 continue;
10587 }
10588 break;
5bd4f169
AM		 10589 }
10590
239e1f3a
AM		 10591 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10592 because such sections are not SEC_ALLOC and thus ld.so will
10593 not process them. */
65f38f15 10594 if (unresolved_reloc
239e1f3a 10595 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 10596 && h->elf.def_dynamic))
9c07fe7c
AM		 10597 {
10598 (*_bfd_error_handler)
d003868e
AM		 10599 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10600 input_bfd,
10601 input_section,
9c07fe7c 10602 (long) rel->r_offset,
7b609f53 10603 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 10604 h->elf.root.root.string);
b34976b6 10605 ret = FALSE;
9c07fe7c 10606 }
5bd4f169 10607
65f38f15 10608 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 10609 input_bfd,
10610 input_section,
10611 contents,
411e1bfb 10612 rel->r_offset,
5bd4f169
AM		 10613 relocation,
10614 addend);
10615
ef60b7ff 10616 if (r != bfd_reloc_ok)
5bd4f169 10617 {
cd27b276
AM		 10618 if (sym_name == NULL)
10619 sym_name = "(null)";
10620 if (r == bfd_reloc_overflow)
5bd4f169 10621 {
cd27b276
AM		 10622 if (warned)
10623 continue;
10624 if (h != NULL
039b3fef 10625 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 10626 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 10627 {
10628 /* Assume this is a call protected by other code that
10629 detects the symbol is undefined. If this is the case,
10630 we can safely ignore the overflow. If not, the
10631 program is hosed anyway, and a little warning isn't
10632 going to help. */
10633
10634 continue;
10635 }
10636
ef60b7ff 10637 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 10638 (info, (h ? &h->elf.root : NULL), sym_name,
10639 ppc64_elf_howto_table[r_type]->name,
411e1bfb 10640 rel->r_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 10641 return FALSE;
ef60b7ff
AM		 10642 }
10643 else
10644 {
10645 (*_bfd_error_handler)
d003868e
AM		 10646 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10647 input_bfd,
10648 input_section,
7b609f53 10649 (long) rel->r_offset,
4ce794b7 10650 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 10651 sym_name,
10652 (int) r);
b34976b6 10653 ret = FALSE;
ef60b7ff 10654 }
5bd4f169 10655 }
5bd4f169
AM		 10656 }
10657
645ea6a9
AM		 10658 /* If we're emitting relocations, then shortly after this function
10659 returns, reloc offsets and addends for this section will be
10660 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 10661 file rather than the input. Save a copy of the relocs for
10662 opd_entry_value. */
10663 if (is_opd && info->emitrelocations)
10664 {
10665 bfd_size_type amt;
10666 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10667 rel = bfd_alloc (input_bfd, amt);
10668 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10669 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10670 if (rel == NULL)
10671 return FALSE;
10672 memcpy (rel, relocs, amt);
10673 }
5bd4f169
AM		 10674 return ret;
10675}
10676
754021d0
AM		 10677/* Adjust the value of any local symbols in opd sections. */
10678
10679static bfd_boolean
10680ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10681 const char *name ATTRIBUTE_UNUSED,
10682 Elf_Internal_Sym *elfsym,
10683 asection *input_sec,
10684 struct elf_link_hash_entry *h)
10685{
4025353c 10686 long *opd_adjust, adjust;
754021d0
AM		 10687 bfd_vma value;
10688
4025353c
AM		 10689 if (h != NULL)
10690 return TRUE;
10691
10692 opd_adjust = get_opd_info (input_sec);
10693 if (opd_adjust == NULL)
754021d0
AM		 10694 return TRUE;
10695
10696 value = elfsym->st_value - input_sec->output_offset;
10697 if (!info->relocatable)
10698 value -= input_sec->output_section->vma;
10699
3f764659 10700 adjust = opd_adjust[value / 8];
4025353c
AM		 10701 if (adjust == -1)
10702 elfsym->st_value = 0;
10703 else
10704 elfsym->st_value += adjust;
754021d0
AM		 10705 return TRUE;
10706}
10707
5bd4f169
AM		 10708/* Finish up dynamic symbol handling. We set the contents of various
10709 dynamic sections here. */
10710
b34976b6 10711static bfd_boolean
4ce794b7
AM		 10712ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10713 struct bfd_link_info *info,
10714 struct elf_link_hash_entry *h,
10715 Elf_Internal_Sym *sym)
5bd4f169 10716{
65f38f15 10717 struct ppc_link_hash_table *htab;
5bd4f169 10718 bfd *dynobj;
8387904d
AM		 10719 struct plt_entry *ent;
10720 Elf_Internal_Rela rela;
10721 bfd_byte *loc;
5bd4f169 10722
65f38f15
AM		 10723 htab = ppc_hash_table (info);
10724 dynobj = htab->elf.dynobj;
5bd4f169 10725
8387904d
AM		 10726 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10727 if (ent->plt.offset != (bfd_vma) -1)
10728 {
10729 /* This symbol has an entry in the procedure linkage
10730 table. Set it up. */
10731
10732 if (htab->plt == NULL
10733 || htab->relplt == NULL
10734 || htab->glink == NULL)
10735 abort ();
10736
10737 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10738 fill in the PLT entry. */
10739 rela.r_offset = (htab->plt->output_section->vma
10740 + htab->plt->output_offset
10741 + ent->plt.offset);
10742 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10743 rela.r_addend = ent->addend;
10744
10745 loc = htab->relplt->contents;
10746 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10747 * sizeof (Elf64_External_Rela));
10748 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10749 }
5bd4f169 10750
f5385ebf 10751 if (h->needs_copy)
5bd4f169 10752 {
5bd4f169 10753 Elf_Internal_Rela rela;
947216bf 10754 bfd_byte *loc;
5bd4f169 10755
65f38f15 10756 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 10757
65f38f15
AM		 10758 if (h->dynindx == -1
10759 || (h->root.type != bfd_link_hash_defined
10760 && h->root.type != bfd_link_hash_defweak)
4ce794b7 10761 || htab->relbss == NULL)
65f38f15 10762 abort ();
5bd4f169
AM		 10763
10764 rela.r_offset = (h->root.u.def.value
10765 + h->root.u.def.section->output_section->vma
10766 + h->root.u.def.section->output_offset);
10767 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10768 rela.r_addend = 0;
4ce794b7
AM		 10769 loc = htab->relbss->contents;
10770 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 10771 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 10772 }
10773
5bd4f169
AM		 10774 /* Mark some specially defined symbols as absolute. */
10775 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10776 sym->st_shndx = SHN_ABS;
10777
b34976b6 10778 return TRUE;
5bd4f169
AM		 10779}
10780
65f38f15
AM		 10781/* Used to decide how to sort relocs in an optimal manner for the
10782 dynamic linker, before writing them out. */
10783
10784static enum elf_reloc_type_class
4ce794b7 10785ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 10786{
04c9666a 10787 enum elf_ppc64_reloc_type r_type;
a33d1f77 10788
4ce794b7 10789 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 10790 switch (r_type)
65f38f15
AM		 10791 {
10792 case R_PPC64_RELATIVE:
10793 return reloc_class_relative;
10794 case R_PPC64_JMP_SLOT:
10795 return reloc_class_plt;
10796 case R_PPC64_COPY:
10797 return reloc_class_copy;
10798 default:
10799 return reloc_class_normal;
10800 }
10801}
10802
5bd4f169
AM		 10803/* Finish up the dynamic sections. */
10804
b34976b6 10805static bfd_boolean
4ce794b7
AM		 10806ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10807 struct bfd_link_info *info)
5bd4f169 10808{
65f38f15
AM		 10809 struct ppc_link_hash_table *htab;
10810 bfd *dynobj;
5bd4f169 10811 asection *sdyn;
5bd4f169 10812
65f38f15
AM		 10813 htab = ppc_hash_table (info);
10814 dynobj = htab->elf.dynobj;
5bd4f169
AM		 10815 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10816
65f38f15 10817 if (htab->elf.dynamic_sections_created)
5bd4f169 10818 {
5bd4f169
AM		 10819 Elf64_External_Dyn *dyncon, *dynconend;
10820
4ce794b7 10821 if (sdyn == NULL || htab->got == NULL)
65f38f15 10822 abort ();
5bd4f169
AM		 10823
10824 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 10825 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 10826 for (; dyncon < dynconend; dyncon++)
10827 {
10828 Elf_Internal_Dyn dyn;
19397422 10829 asection *s;
5bd4f169
AM		 10830
10831 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10832
10833 switch (dyn.d_tag)
10834 {
65f38f15
AM		 10835 default:
10836 continue;
5bd4f169 10837
5d1634d7 10838 case DT_PPC64_GLINK:
4ce794b7 10839 s = htab->glink;
6348e046 10840 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 10841 /* We stupidly defined DT_PPC64_GLINK to be the start
10842 of glink rather than the first entry point, which is
10843 what ld.so needs, and now have a bigger stub to
10844 support automatic multiple TOCs. */
10845 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 10846 break;
10847
19397422
AM		 10848 case DT_PPC64_OPD:
10849 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10850 if (s == NULL)
10851 continue;
10852 dyn.d_un.d_ptr = s->vma;
19397422
AM		 10853 break;
10854
10855 case DT_PPC64_OPDSZ:
10856 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 10857 if (s == NULL)
10858 continue;
eea6121a 10859 dyn.d_un.d_val = s->size;
19397422
AM		 10860 break;
10861
65f38f15 10862 case DT_PLTGOT:
4ce794b7 10863 s = htab->plt;
6348e046 10864 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 10865 break;
10866
10867 case DT_JMPREL:
4ce794b7 10868 s = htab->relplt;
6348e046 10869 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 10870 break;
5bd4f169 10871
65f38f15 10872 case DT_PLTRELSZ:
eea6121a 10873 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 10874 break;
10875
10876 case DT_RELASZ:
10877 /* Don't count procedure linkage table relocs in the
10878 overall reloc count. */
4ce794b7 10879 s = htab->relplt;
6348e046
AM		 10880 if (s == NULL)
10881 continue;
eea6121a 10882 dyn.d_un.d_val -= s->size;
6348e046
AM		 10883 break;
10884
10885 case DT_RELA:
10886 /* We may not be using the standard ELF linker script.
10887 If .rela.plt is the first .rela section, we adjust
10888 DT_RELA to not include it. */
4ce794b7 10889 s = htab->relplt;
6348e046
AM		 10890 if (s == NULL)
10891 continue;
10892 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10893 continue;
eea6121a 10894 dyn.d_un.d_ptr += s->size;
65f38f15 10895 break;
5bd4f169 10896 }
5bd4f169 10897
65f38f15 10898 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 10899 }
5bd4f169
AM		 10900 }
10901
eea6121a 10902 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 10903 {
10904 /* Fill in the first entry in the global offset table.
10905 We use it to hold the link-time TOCbase. */
10906 bfd_put_64 (output_bfd,
60ee0d4a 10907 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 10908 htab->got->contents);
5d1634d7
AM		 10909
10910 /* Set .got entry size. */
4ce794b7 10911 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 10912 }
10913
eea6121a 10914 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 10915 {
10916 /* Set .plt entry size. */
4ce794b7 10917 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 10918 = PLT_ENTRY_SIZE;
10919 }
10920
e717da7e 10921 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 10922 since we didn't add them to DYNOBJ. We know dynobj is the first
10923 bfd. */
e717da7e
AM		 10924 while ((dynobj = dynobj->link_next) != NULL)
10925 {
10926 asection *s;
7b53ace3 10927
ee75fd95 10928 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM		 10929 continue;
10930
e717da7e
AM		 10931 s = ppc64_elf_tdata (dynobj)->got;
10932 if (s != NULL
eea6121a 10933 && s->size != 0
e717da7e
AM		 10934 && s->output_section != bfd_abs_section_ptr
10935 && !bfd_set_section_contents (output_bfd, s->output_section,
10936 s->contents, s->output_offset,
eea6121a 10937 s->size))
e717da7e
AM		 10938 return FALSE;
10939 s = ppc64_elf_tdata (dynobj)->relgot;
10940 if (s != NULL
eea6121a 10941 && s->size != 0
e717da7e
AM		 10942 && s->output_section != bfd_abs_section_ptr
10943 && !bfd_set_section_contents (output_bfd, s->output_section,
10944 s->contents, s->output_offset,
eea6121a 10945 s->size))
e717da7e
AM		 10946 return FALSE;
10947 }
f6c52c13 10948
b34976b6 10949 return TRUE;
5bd4f169
AM		 10950}
10951
5bd4f169 10952#include "elf64-target.h"
GDB Binutils - Deliverables
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