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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
b90efa5b 2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
32ca9640 5 Largely rewritten by Alan Modra.
5bd4f169 6
ae9a127f 7 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 8
ae9a127f
NC		 9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
ae9a127f 12 (at your option) any later version.
5bd4f169 13
ae9a127f
NC		 14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
5bd4f169 18
4ce794b7
AM		 19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 22
cd123cb7 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 27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
5bd4f169 30#include "bfd.h"
5bd4f169
AM		 31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
04c9666a 34#include "elf/ppc64.h"
5d1634d7 35#include "elf64-ppc.h"
58d180e8 36#include "dwarf2.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016 56static bfd_vma opd_entry_value
aef36ac1 57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
5bd4f169 58
6d00b590 59#define TARGET_LITTLE_SYM powerpc_elf64_le_vec
ad8e1ba5 60#define TARGET_LITTLE_NAME "elf64-powerpcle"
6d00b590 61#define TARGET_BIG_SYM powerpc_elf64_vec
ad8e1ba5
AM		 62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 64#define ELF_TARGET_ID PPC64_ELF_DATA
ad8e1ba5
AM		 65#define ELF_MACHINE_CODE EM_PPC64
66#define ELF_MAXPAGESIZE 0x10000
04c6a44c 67#define ELF_COMMONPAGESIZE 0x10000
ad8e1ba5
AM		 68#define elf_info_to_howto ppc64_elf_info_to_howto
69
70#define elf_backend_want_got_sym 0
71#define elf_backend_want_plt_sym 0
72#define elf_backend_plt_alignment 3
73#define elf_backend_plt_not_loaded 1
ad8e1ba5 74#define elf_backend_got_header_size 8
ad8e1ba5
AM		 75#define elf_backend_can_gc_sections 1
76#define elf_backend_can_refcount 1
77#define elf_backend_rela_normal 1
6bfdb61b 78#define elf_backend_default_execstack 0
ad8e1ba5 79
e717da7e 80#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 81#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
aa374f67 82#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ee67d69a
AM		 83#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84#define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
ad8e1ba5
AM		 85#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
90e3cdf2 87#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
aa374f67 88#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
ad8e1ba5
AM		 89
90#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 91#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 93#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 94#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 96#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
f6c7c3e8 97#define elf_backend_check_directives ppc64_elf_before_check_relocs
e5034e59 98#define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
8387904d 99#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 100#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 101#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 102#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 103#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106#define elf_backend_hide_symbol ppc64_elf_hide_symbol
9f296da3 107#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
ad8e1ba5
AM		 108#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
a345bc8d 110#define elf_backend_hash_symbol ppc64_elf_hash_symbol
74541ad4 111#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 112#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 113#define elf_backend_relocate_section ppc64_elf_relocate_section
114#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 117#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 118#define elf_backend_special_sections ppc64_elf_special_sections
6911b7dc 119#define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
ad8e1ba5 120
5bd4f169
AM		 121/* The name of the dynamic interpreter. This is put in the .interp
122 section. */
123#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
124
125/* The size in bytes of an entry in the procedure linkage table. */
b9e5796b 126#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
5bd4f169
AM		 127
128/* The initial size of the plt reserved for the dynamic linker. */
b9e5796b 129#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
5bd4f169 130
a078d95a
AM		 131/* Offsets to some stack save slots. */
132#define STK_LR 16
133#define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
eb8d7fda 134/* This one is dodgy. ELFv2 does not have a linker word, so use the
a078d95a
AM		 135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137#define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
138
5bd4f169 139/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 140#define TOC_BASE_OFF 0x8000
141
142/* Offset of tp and dtp pointers from start of TLS block. */
143#define TP_OFFSET 0x7000
144#define DTP_OFFSET 0x8000
5bd4f169 145
ad8e1ba5
AM		 146/* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
71a39c98 148 insert an addi to adjust r11. */
a078d95a 149#define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
71a39c98
AM		 150#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152#define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153#define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154#define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
5d1634d7
AM		 155#define BCTR 0x4e800420 /* bctr */
156
71a39c98 157#define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
ad8e1ba5
AM		 158#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
160
71a39c98
AM		 161#define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162#define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163#define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
794e51c0
AM		 164#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166#define BNECTR 0x4ca20420 /* bnectr+ */
167#define BNECTR_P4 0x4ce20420 /* bnectr+ */
168
71a39c98 169#define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
ac2df442
AM		 170#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
172
a078d95a 173#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
ad8e1ba5 174
397998fc 175#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
a345bc8d
AM		 176#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
178
ee4bf8d2 179/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 180#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 181 /* 0: */
182 /* .quad plt0-1f */
183 /* __glink: */
184#define MFLR_R12 0x7d8802a6 /* mflr %12 */
185#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
186 /* 1: */
187#define MFLR_R11 0x7d6802a6 /* mflr %11 */
71a39c98 188 /* ld %2,(0b-1b)(%11) */
ee4bf8d2 189#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
71a39c98
AM		 190#define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
191 /* ld %12,0(%11) */
192 /* ld %2,8(%11) */
193 /* mtctr %12 */
194 /* ld %11,16(%11) */
ee4bf8d2 195 /* bctr */
b9e5796b
AM		 196#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
5d1634d7
AM		 201
202/* Pad with this. */
203#define NOP 0x60000000
204
721956f4
AM		 205/* Some other nops. */
206#define CROR_151515 0x4def7b82
207#define CROR_313131 0x4ffffb82
208
cedb70c5 209/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 210#define LI_R0_0 0x38000000 /* li %r0,0 */
211#define B_DOT 0x48000000 /* b . */
212
213/* After that, we need two instructions to load the index, followed by
214 a branch. */
215#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 216#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 217
deb0e272
AM		 218/* Instructions used by the save and restore reg functions. */
219#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 223#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 225#define LI_R12_0 0x39800000 /* li %r12,0 */
226#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 229#define BLR 0x4e800020 /* blr */
230
41bd81ab
AM		 231/* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 234 relocate .opd without reloc entries. */
41bd81ab
AM		 235#ifndef NO_OPD_RELOCS
236#define NO_OPD_RELOCS 0
237#endif
810d4e75
AM		 238
239static inline int
240abiversion (bfd *abfd)
241{
242 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
243}
244
245static inline void
246set_abiversion (bfd *abfd, int ver)
247{
248 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
249 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
250}
5bd4f169 251\f
f5e87a1d 252#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 253
5bd4f169 254/* Relocation HOWTO's. */
04c9666a 255static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 256
257static reloc_howto_type ppc64_elf_howto_raw[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE, /* type */
260 0, /* rightshift */
6346d5ca
AM		 261 3, /* size (0 = byte, 1 = short, 2 = long) */
262 0, /* bitsize */
b34976b6 263 FALSE, /* pc_relative */
5bd4f169 264 0, /* bitpos */
f5e87a1d 265 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 266 bfd_elf_generic_reloc, /* special_function */
267 "R_PPC64_NONE", /* name */
b34976b6 268 FALSE, /* partial_inplace */
d006db6c 269 0, /* src_mask */
5bd4f169 270 0, /* dst_mask */
b34976b6 271 FALSE), /* pcrel_offset */
5bd4f169
AM		 272
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32, /* type */
275 0, /* rightshift */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
277 32, /* bitsize */
b34976b6 278 FALSE, /* pc_relative */
5bd4f169
AM		 279 0, /* bitpos */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_ADDR32", /* name */
b34976b6 283 FALSE, /* partial_inplace */
5bd4f169
AM		 284 0, /* src_mask */
285 0xffffffff, /* dst_mask */
b34976b6 286 FALSE), /* pcrel_offset */
5bd4f169
AM		 287
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 26, /* bitsize */
b34976b6 294 FALSE, /* pc_relative */
5bd4f169
AM		 295 0, /* bitpos */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_ADDR24", /* name */
b34976b6 299 FALSE, /* partial_inplace */
d006db6c 300 0, /* src_mask */
f5e87a1d 301 0x03fffffc, /* dst_mask */
b34976b6 302 FALSE), /* pcrel_offset */
5bd4f169
AM		 303
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16, /* type */
306 0, /* rightshift */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
b34976b6 309 FALSE, /* pc_relative */
5bd4f169
AM		 310 0, /* bitpos */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR16", /* name */
b34976b6 314 FALSE, /* partial_inplace */
5bd4f169
AM		 315 0, /* src_mask */
316 0xffff, /* dst_mask */
b34976b6 317 FALSE), /* pcrel_offset */
5bd4f169
AM		 318
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO, /* type */
321 0, /* rightshift */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
b34976b6 324 FALSE, /* pc_relative */
5bd4f169
AM		 325 0, /* bitpos */
326 complain_overflow_dont,/* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
b34976b6 329 FALSE, /* partial_inplace */
5bd4f169
AM		 330 0, /* src_mask */
331 0xffff, /* dst_mask */
b34976b6 332 FALSE), /* pcrel_offset */
5bd4f169
AM		 333
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI, /* type */
336 16, /* rightshift */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
b34976b6 339 FALSE, /* pc_relative */
5bd4f169 340 0, /* bitpos */
f9c6b907 341 complain_overflow_signed, /* complain_on_overflow */
5bd4f169
AM		 342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
b34976b6 344 FALSE, /* partial_inplace */
5bd4f169
AM		 345 0, /* src_mask */
346 0xffff, /* dst_mask */
b34976b6 347 FALSE), /* pcrel_offset */
5bd4f169
AM		 348
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA, /* type */
352 16, /* rightshift */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
354 16, /* bitsize */
b34976b6 355 FALSE, /* pc_relative */
5bd4f169 356 0, /* bitpos */
f9c6b907 357 complain_overflow_signed, /* complain_on_overflow */
805fc799 358 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 359 "R_PPC64_ADDR16_HA", /* name */
b34976b6 360 FALSE, /* partial_inplace */
5bd4f169
AM		 361 0, /* src_mask */
362 0xffff, /* dst_mask */
b34976b6 363 FALSE), /* pcrel_offset */
5bd4f169
AM		 364
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 16, /* bitsize */
b34976b6 371 FALSE, /* pc_relative */
5bd4f169 372 0, /* bitpos */
b80eed39 373 complain_overflow_signed, /* complain_on_overflow */
2441e016 374 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 375 "R_PPC64_ADDR14", /* name */
b34976b6 376 FALSE, /* partial_inplace */
d006db6c 377 0, /* src_mask */
f5e87a1d 378 0x0000fffc, /* dst_mask */
b34976b6 379 FALSE), /* pcrel_offset */
5bd4f169
AM		 380
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
b34976b6 388 FALSE, /* pc_relative */
5bd4f169 389 0, /* bitpos */
b80eed39 390 complain_overflow_signed, /* complain_on_overflow */
805fc799 391 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 392 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 393 FALSE, /* partial_inplace */
d006db6c 394 0, /* src_mask */
f5e87a1d 395 0x0000fffc, /* dst_mask */
b34976b6 396 FALSE), /* pcrel_offset */
5bd4f169
AM		 397
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
b34976b6 405 FALSE, /* pc_relative */
5bd4f169 406 0, /* bitpos */
b80eed39 407 complain_overflow_signed, /* complain_on_overflow */
805fc799 408 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 410 FALSE, /* partial_inplace */
d006db6c 411 0, /* src_mask */
f5e87a1d 412 0x0000fffc, /* dst_mask */
b34976b6 413 FALSE), /* pcrel_offset */
5bd4f169
AM		 414
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24, /* type */
417 0, /* rightshift */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
419 26, /* bitsize */
b34976b6 420 TRUE, /* pc_relative */
5bd4f169
AM		 421 0, /* bitpos */
422 complain_overflow_signed, /* complain_on_overflow */
2441e016 423 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 424 "R_PPC64_REL24", /* name */
b34976b6 425 FALSE, /* partial_inplace */
d006db6c 426 0, /* src_mask */
f5e87a1d 427 0x03fffffc, /* dst_mask */
b34976b6 428 TRUE), /* pcrel_offset */
5bd4f169
AM		 429
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14, /* type */
432 0, /* rightshift */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
b34976b6 435 TRUE, /* pc_relative */
5bd4f169
AM		 436 0, /* bitpos */
437 complain_overflow_signed, /* complain_on_overflow */
2441e016 438 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 439 "R_PPC64_REL14", /* name */
b34976b6 440 FALSE, /* partial_inplace */
d006db6c 441 0, /* src_mask */
f5e87a1d 442 0x0000fffc, /* dst_mask */
b34976b6 443 TRUE), /* pcrel_offset */
5bd4f169
AM		 444
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
447 zero. */
448 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
449 0, /* rightshift */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
451 16, /* bitsize */
b34976b6 452 TRUE, /* pc_relative */
5bd4f169
AM		 453 0, /* bitpos */
454 complain_overflow_signed, /* complain_on_overflow */
805fc799 455 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 456 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 457 FALSE, /* partial_inplace */
d006db6c 458 0, /* src_mask */
f5e87a1d 459 0x0000fffc, /* dst_mask */
b34976b6 460 TRUE), /* pcrel_offset */
5bd4f169
AM		 461
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
464 be zero. */
465 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
466 0, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
468 16, /* bitsize */
b34976b6 469 TRUE, /* pc_relative */
5bd4f169
AM		 470 0, /* bitpos */
471 complain_overflow_signed, /* complain_on_overflow */
805fc799 472 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 473 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 474 FALSE, /* partial_inplace */
d006db6c 475 0, /* src_mask */
f5e87a1d 476 0x0000fffc, /* dst_mask */
b34976b6 477 TRUE), /* pcrel_offset */
5bd4f169
AM		 478
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
480 symbol. */
481 HOWTO (R_PPC64_GOT16, /* type */
482 0, /* rightshift */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
484 16, /* bitsize */
b34976b6 485 FALSE, /* pc_relative */
5bd4f169
AM		 486 0, /* bitpos */
487 complain_overflow_signed, /* complain_on_overflow */
805fc799 488 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 489 "R_PPC64_GOT16", /* name */
b34976b6 490 FALSE, /* partial_inplace */
5bd4f169
AM		 491 0, /* src_mask */
492 0xffff, /* dst_mask */
b34976b6 493 FALSE), /* pcrel_offset */
5bd4f169
AM		 494
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
496 the symbol. */
497 HOWTO (R_PPC64_GOT16_LO, /* type */
498 0, /* rightshift */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
500 16, /* bitsize */
b34976b6 501 FALSE, /* pc_relative */
5bd4f169
AM		 502 0, /* bitpos */
503 complain_overflow_dont, /* complain_on_overflow */
805fc799 504 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 505 "R_PPC64_GOT16_LO", /* name */
b34976b6 506 FALSE, /* partial_inplace */
5bd4f169
AM		 507 0, /* src_mask */
508 0xffff, /* dst_mask */
b34976b6 509 FALSE), /* pcrel_offset */
5bd4f169
AM		 510
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
512 the symbol. */
513 HOWTO (R_PPC64_GOT16_HI, /* type */
514 16, /* rightshift */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
516 16, /* bitsize */
b34976b6 517 FALSE, /* pc_relative */
5bd4f169 518 0, /* bitpos */
f9c6b907 519 complain_overflow_signed,/* complain_on_overflow */
805fc799 520 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 521 "R_PPC64_GOT16_HI", /* name */
b34976b6 522 FALSE, /* partial_inplace */
5bd4f169
AM		 523 0, /* src_mask */
524 0xffff, /* dst_mask */
b34976b6 525 FALSE), /* pcrel_offset */
5bd4f169
AM		 526
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
528 the symbol. */
529 HOWTO (R_PPC64_GOT16_HA, /* type */
530 16, /* rightshift */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
532 16, /* bitsize */
b34976b6 533 FALSE, /* pc_relative */
5bd4f169 534 0, /* bitpos */
f9c6b907 535 complain_overflow_signed,/* complain_on_overflow */
805fc799 536 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 537 "R_PPC64_GOT16_HA", /* name */
b34976b6 538 FALSE, /* partial_inplace */
5bd4f169
AM		 539 0, /* src_mask */
540 0xffff, /* dst_mask */
b34976b6 541 FALSE), /* pcrel_offset */
5bd4f169
AM		 542
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY, /* type */
549 0, /* rightshift */
f5e87a1d
AM		 550 0, /* this one is variable size */
551 0, /* bitsize */
b34976b6 552 FALSE, /* pc_relative */
5bd4f169 553 0, /* bitpos */
f5e87a1d
AM		 554 complain_overflow_dont, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 556 "R_PPC64_COPY", /* name */
b34976b6 557 FALSE, /* partial_inplace */
5bd4f169
AM		 558 0, /* src_mask */
559 0, /* dst_mask */
b34976b6 560 FALSE), /* pcrel_offset */
5bd4f169
AM		 561
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
563 entries. */
564 HOWTO (R_PPC64_GLOB_DAT, /* type */
565 0, /* rightshift */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
567 64, /* bitsize */
b34976b6 568 FALSE, /* pc_relative */
5bd4f169
AM		 569 0, /* bitpos */
570 complain_overflow_dont, /* complain_on_overflow */
805fc799 571 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 572 "R_PPC64_GLOB_DAT", /* name */
b34976b6 573 FALSE, /* partial_inplace */
5bd4f169 574 0, /* src_mask */
f5e87a1d 575 ONES (64), /* dst_mask */
b34976b6 576 FALSE), /* pcrel_offset */
5bd4f169
AM		 577
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT, /* type */
581 0, /* rightshift */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
583 0, /* bitsize */
b34976b6 584 FALSE, /* pc_relative */
5bd4f169
AM		 585 0, /* bitpos */
586 complain_overflow_dont, /* complain_on_overflow */
805fc799 587 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 588 "R_PPC64_JMP_SLOT", /* name */
b34976b6 589 FALSE, /* partial_inplace */
5bd4f169
AM		 590 0, /* src_mask */
591 0, /* dst_mask */
b34976b6 592 FALSE), /* pcrel_offset */
5bd4f169
AM		 593
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
596 addend. */
597 HOWTO (R_PPC64_RELATIVE, /* type */
598 0, /* rightshift */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
600 64, /* bitsize */
b34976b6 601 FALSE, /* pc_relative */
5bd4f169
AM		 602 0, /* bitpos */
603 complain_overflow_dont, /* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
b34976b6 606 FALSE, /* partial_inplace */
5bd4f169 607 0, /* src_mask */
f5e87a1d 608 ONES (64), /* dst_mask */
b34976b6 609 FALSE), /* pcrel_offset */
5bd4f169
AM		 610
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32, /* type */
613 0, /* rightshift */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
615 32, /* bitsize */
b34976b6 616 FALSE, /* pc_relative */
5bd4f169
AM		 617 0, /* bitpos */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_UADDR32", /* name */
b34976b6 621 FALSE, /* partial_inplace */
5bd4f169
AM		 622 0, /* src_mask */
623 0xffffffff, /* dst_mask */
b34976b6 624 FALSE), /* pcrel_offset */
5bd4f169
AM		 625
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16, /* type */
628 0, /* rightshift */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
630 16, /* bitsize */
b34976b6 631 FALSE, /* pc_relative */
5bd4f169
AM		 632 0, /* bitpos */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR16", /* name */
b34976b6 636 FALSE, /* partial_inplace */
5bd4f169
AM		 637 0, /* src_mask */
638 0xffff, /* dst_mask */
b34976b6 639 FALSE), /* pcrel_offset */
5bd4f169
AM		 640
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32, /* type */
643 0, /* rightshift */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
645 32, /* bitsize */
b34976b6 646 TRUE, /* pc_relative */
5bd4f169 647 0, /* bitpos */
5bd4f169
AM		 648 complain_overflow_signed, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_REL32", /* name */
b34976b6 651 FALSE, /* partial_inplace */
5bd4f169
AM		 652 0, /* src_mask */
653 0xffffffff, /* dst_mask */
b34976b6 654 TRUE), /* pcrel_offset */
5bd4f169 655
10ed1bba 656 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 657 HOWTO (R_PPC64_PLT32, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
b34976b6 661 FALSE, /* pc_relative */
5bd4f169
AM		 662 0, /* bitpos */
663 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 664 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 665 "R_PPC64_PLT32", /* name */
b34976b6 666 FALSE, /* partial_inplace */
5bd4f169 667 0, /* src_mask */
f5e87a1d 668 0xffffffff, /* dst_mask */
b34976b6 669 FALSE), /* pcrel_offset */
5bd4f169
AM		 670
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32, /* type */
674 0, /* rightshift */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
676 32, /* bitsize */
b34976b6 677 TRUE, /* pc_relative */
5bd4f169
AM		 678 0, /* bitpos */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
b34976b6 682 FALSE, /* partial_inplace */
5bd4f169 683 0, /* src_mask */
f5e87a1d 684 0xffffffff, /* dst_mask */
b34976b6 685 TRUE), /* pcrel_offset */
5bd4f169
AM		 686
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
688 the symbol. */
689 HOWTO (R_PPC64_PLT16_LO, /* type */
690 0, /* rightshift */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
b34976b6 693 FALSE, /* pc_relative */
5bd4f169
AM		 694 0, /* bitpos */
695 complain_overflow_dont, /* complain_on_overflow */
805fc799 696 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 697 "R_PPC64_PLT16_LO", /* name */
b34976b6 698 FALSE, /* partial_inplace */
5bd4f169
AM		 699 0, /* src_mask */
700 0xffff, /* dst_mask */
b34976b6 701 FALSE), /* pcrel_offset */
5bd4f169
AM		 702
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
704 the symbol. */
705 HOWTO (R_PPC64_PLT16_HI, /* type */
706 16, /* rightshift */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
708 16, /* bitsize */
b34976b6 709 FALSE, /* pc_relative */
5bd4f169 710 0, /* bitpos */
f9c6b907 711 complain_overflow_signed, /* complain_on_overflow */
805fc799 712 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 713 "R_PPC64_PLT16_HI", /* name */
b34976b6 714 FALSE, /* partial_inplace */
5bd4f169
AM		 715 0, /* src_mask */
716 0xffff, /* dst_mask */
b34976b6 717 FALSE), /* pcrel_offset */
5bd4f169
AM		 718
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
720 the symbol. */
721 HOWTO (R_PPC64_PLT16_HA, /* type */
722 16, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
b34976b6 725 FALSE, /* pc_relative */
5bd4f169 726 0, /* bitpos */
f9c6b907 727 complain_overflow_signed, /* complain_on_overflow */
805fc799 728 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 729 "R_PPC64_PLT16_HA", /* name */
b34976b6 730 FALSE, /* partial_inplace */
5bd4f169
AM		 731 0, /* src_mask */
732 0xffff, /* dst_mask */
b34976b6 733 FALSE), /* pcrel_offset */
5bd4f169 734
c061c2d8 735 /* 16-bit section relative relocation. */
5bd4f169
AM		 736 HOWTO (R_PPC64_SECTOFF, /* type */
737 0, /* rightshift */
c061c2d8
AM		 738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
b34976b6 740 FALSE, /* pc_relative */
5bd4f169 741 0, /* bitpos */
b80eed39 742 complain_overflow_signed, /* complain_on_overflow */
805fc799 743 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 744 "R_PPC64_SECTOFF", /* name */
b34976b6 745 FALSE, /* partial_inplace */
5bd4f169 746 0, /* src_mask */
c061c2d8 747 0xffff, /* dst_mask */
b34976b6 748 FALSE), /* pcrel_offset */
5bd4f169 749
c061c2d8 750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 751 HOWTO (R_PPC64_SECTOFF_LO, /* type */
752 0, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
b34976b6 755 FALSE, /* pc_relative */
5bd4f169
AM		 756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
805fc799 758 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 759 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 760 FALSE, /* partial_inplace */
5bd4f169
AM		 761 0, /* src_mask */
762 0xffff, /* dst_mask */
b34976b6 763 FALSE), /* pcrel_offset */
5bd4f169
AM		 764
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI, /* type */
767 16, /* rightshift */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
b34976b6 770 FALSE, /* pc_relative */
5bd4f169 771 0, /* bitpos */
f9c6b907 772 complain_overflow_signed, /* complain_on_overflow */
805fc799 773 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 774 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 775 FALSE, /* partial_inplace */
5bd4f169
AM		 776 0, /* src_mask */
777 0xffff, /* dst_mask */
b34976b6 778 FALSE), /* pcrel_offset */
5bd4f169
AM		 779
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA, /* type */
782 16, /* rightshift */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
784 16, /* bitsize */
b34976b6 785 FALSE, /* pc_relative */
5bd4f169 786 0, /* bitpos */
f9c6b907 787 complain_overflow_signed, /* complain_on_overflow */
805fc799 788 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 789 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 790 FALSE, /* partial_inplace */
5bd4f169
AM		 791 0, /* src_mask */
792 0xffff, /* dst_mask */
b34976b6 793 FALSE), /* pcrel_offset */
5bd4f169 794
04c9666a
AM		 795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 797 2, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 30, /* bitsize */
b34976b6 800 TRUE, /* pc_relative */
5bd4f169
AM		 801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
04c9666a 804 "R_PPC64_REL30", /* name */
b34976b6 805 FALSE, /* partial_inplace */
d006db6c 806 0, /* src_mask */
5bd4f169 807 0xfffffffc, /* dst_mask */
b34976b6 808 TRUE), /* pcrel_offset */
5bd4f169
AM		 809
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
811
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64, /* type */
814 0, /* rightshift */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
816 64, /* bitsize */
b34976b6 817 FALSE, /* pc_relative */
5bd4f169
AM		 818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR64", /* name */
b34976b6 822 FALSE, /* partial_inplace */
5bd4f169 823 0, /* src_mask */
f5e87a1d 824 ONES (64), /* dst_mask */
b34976b6 825 FALSE), /* pcrel_offset */
5bd4f169
AM		 826
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
829 32, /* rightshift */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
831 16, /* bitsize */
b34976b6 832 FALSE, /* pc_relative */
5bd4f169
AM		 833 0, /* bitpos */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 837 FALSE, /* partial_inplace */
5bd4f169
AM		 838 0, /* src_mask */
839 0xffff, /* dst_mask */
b34976b6 840 FALSE), /* pcrel_offset */
5bd4f169
AM		 841
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
845 32, /* rightshift */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
b34976b6 848 FALSE, /* pc_relative */
5bd4f169
AM		 849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
805fc799 851 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 852 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 853 FALSE, /* partial_inplace */
5bd4f169
AM		 854 0, /* src_mask */
855 0xffff, /* dst_mask */
b34976b6 856 FALSE), /* pcrel_offset */
5bd4f169
AM		 857
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
860 48, /* rightshift */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
862 16, /* bitsize */
b34976b6 863 FALSE, /* pc_relative */
5bd4f169
AM		 864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 868 FALSE, /* partial_inplace */
5bd4f169
AM		 869 0, /* src_mask */
870 0xffff, /* dst_mask */
b34976b6 871 FALSE), /* pcrel_offset */
5bd4f169
AM		 872
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
876 48, /* rightshift */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
878 16, /* bitsize */
b34976b6 879 FALSE, /* pc_relative */
5bd4f169
AM		 880 0, /* bitpos */
881 complain_overflow_dont, /* complain_on_overflow */
805fc799 882 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 883 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 884 FALSE, /* partial_inplace */
5bd4f169
AM		 885 0, /* src_mask */
886 0xffff, /* dst_mask */
b34976b6 887 FALSE), /* pcrel_offset */
5bd4f169
AM		 888
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64, /* type */
891 0, /* rightshift */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
893 64, /* bitsize */
b34976b6 894 FALSE, /* pc_relative */
5bd4f169
AM		 895 0, /* bitpos */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC64_UADDR64", /* name */
b34976b6 899 FALSE, /* partial_inplace */
5bd4f169 900 0, /* src_mask */
f5e87a1d 901 ONES (64), /* dst_mask */
b34976b6 902 FALSE), /* pcrel_offset */
5bd4f169
AM		 903
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64, /* type */
906 0, /* rightshift */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 64, /* bitsize */
b34976b6 909 TRUE, /* pc_relative */
5bd4f169
AM		 910 0, /* bitpos */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_REL64", /* name */
b34976b6 914 FALSE, /* partial_inplace */
5bd4f169 915 0, /* src_mask */
f5e87a1d 916 ONES (64), /* dst_mask */
b34976b6 917 TRUE), /* pcrel_offset */
5bd4f169 918
cedb70c5 919 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 920 HOWTO (R_PPC64_PLT64, /* type */
921 0, /* rightshift */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
923 64, /* bitsize */
b34976b6 924 FALSE, /* pc_relative */
5bd4f169
AM		 925 0, /* bitpos */
926 complain_overflow_dont, /* complain_on_overflow */
805fc799 927 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 928 "R_PPC64_PLT64", /* name */
b34976b6 929 FALSE, /* partial_inplace */
5bd4f169 930 0, /* src_mask */
f5e87a1d 931 ONES (64), /* dst_mask */
b34976b6 932 FALSE), /* pcrel_offset */
5bd4f169
AM		 933
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
935 table. */
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64, /* type */
938 0, /* rightshift */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
940 64, /* bitsize */
b34976b6 941 TRUE, /* pc_relative */
5bd4f169
AM		 942 0, /* bitpos */
943 complain_overflow_dont, /* complain_on_overflow */
805fc799 944 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 945 "R_PPC64_PLTREL64", /* name */
b34976b6 946 FALSE, /* partial_inplace */
5bd4f169 947 0, /* src_mask */
f5e87a1d 948 ONES (64), /* dst_mask */
b34976b6 949 TRUE), /* pcrel_offset */
5bd4f169
AM		 950
951 /* 16 bit TOC-relative relocation. */
952
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16, /* type */
955 0, /* 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_signed, /* complain_on_overflow */
805fc799 961 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 962 "R_PPC64_TOC16", /* 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 /* 16 bit TOC-relative relocation without overflow. */
969
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO, /* type */
972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
5bd4f169
AM		 976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
805fc799 978 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 979 "R_PPC64_TOC16_LO", /* name */
b34976b6 980 FALSE, /* partial_inplace */
5bd4f169
AM		 981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
5bd4f169
AM		 984
985 /* 16 bit TOC-relative relocation, high 16 bits. */
986
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI, /* type */
989 16, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
b34976b6 992 FALSE, /* pc_relative */
5bd4f169 993 0, /* bitpos */
f9c6b907 994 complain_overflow_signed, /* complain_on_overflow */
805fc799 995 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 996 "R_PPC64_TOC16_HI", /* name */
b34976b6 997 FALSE, /* partial_inplace */
5bd4f169
AM		 998 0, /* src_mask */
999 0xffff, /* dst_mask */
b34976b6 1000 FALSE), /* pcrel_offset */
5bd4f169
AM		 1001
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1004 negative. */
1005
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 16, /* bitsize */
b34976b6 1011 FALSE, /* pc_relative */
5bd4f169 1012 0, /* bitpos */
f9c6b907 1013 complain_overflow_signed, /* complain_on_overflow */
805fc799 1014 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 1015 "R_PPC64_TOC16_HA", /* name */
b34976b6 1016 FALSE, /* partial_inplace */
5bd4f169
AM		 1017 0, /* src_mask */
1018 0xffff, /* dst_mask */
b34976b6 1019 FALSE), /* pcrel_offset */
5bd4f169
AM		 1020
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1022
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC, /* type */
1025 0, /* rightshift */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1027 64, /* bitsize */
b34976b6 1028 FALSE, /* pc_relative */
5bd4f169 1029 0, /* bitpos */
b80eed39 1030 complain_overflow_dont, /* complain_on_overflow */
805fc799 1031 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 1032 "R_PPC64_TOC", /* name */
b34976b6 1033 FALSE, /* partial_inplace */
5bd4f169 1034 0, /* src_mask */
f5e87a1d 1035 ONES (64), /* dst_mask */
b34976b6 1036 FALSE), /* pcrel_offset */
5bd4f169
AM		 1037
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16, /* type */
1048 0, /* rightshift */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1050 16, /* bitsize */
b34976b6 1051 FALSE, /* pc_relative */
5bd4f169
AM		 1052 0, /* bitpos */
1053 complain_overflow_signed, /* complain_on_overflow */
805fc799 1054 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE, /* partial_inplace */
1057 0, /* src_mask */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1060
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1064 0, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
1067 FALSE, /* pc_relative */
1068 0, /* bitpos */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE, /* partial_inplace */
1073 0, /* src_mask */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1076
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
f9c6b907 1085 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1086 ppc64_elf_unhandled_reloc, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1095 is negative. */
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 16, /* bitsize */
1101 FALSE, /* pc_relative */
1102 0, /* bitpos */
f9c6b907 1103 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE, /* partial_inplace */
1107 0, /* src_mask */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1110
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS, /* type */
1113 0, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
b80eed39 1118 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE, /* partial_inplace */
1122 0, /* src_mask */
1123 0xfffc, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1125
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1128 0, /* rightshift */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE, /* partial_inplace */
1137 0, /* src_mask */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS, /* type */
1143 0, /* rightshift */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 16, /* bitsize */
1146 FALSE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE, /* partial_inplace */
1152 0, /* src_mask */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1155
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1158 0, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE, /* partial_inplace */
1167 0, /* src_mask */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
b80eed39 1193 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1194 ppc64_elf_sectoff_reloc, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1203 0, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS, /* type */
1218 0, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_signed, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1233 0, /* rightshift */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1235 16, /* bitsize */
1236 FALSE, /* pc_relative */
1237 0, /* bitpos */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE, /* partial_inplace */
1242 0, /* src_mask */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1245
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1248 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 FALSE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xfffc, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xfffc, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
727fc41e 1278 /* Marker relocs for TLS. */
411e1bfb
AM		 1279 HOWTO (R_PPC64_TLS,
1280 0, /* rightshift */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1282 32, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
727fc41e
AM		 1293 HOWTO (R_PPC64_TLSGD,
1294 0, /* rightshift */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1296 32, /* bitsize */
1297 FALSE, /* pc_relative */
1298 0, /* bitpos */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE, /* partial_inplace */
1303 0, /* src_mask */
1304 0, /* dst_mask */
1305 FALSE), /* pcrel_offset */
1306
1307 HOWTO (R_PPC64_TLSLD,
1308 0, /* rightshift */
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1310 32, /* bitsize */
1311 FALSE, /* pc_relative */
1312 0, /* bitpos */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE, /* partial_inplace */
1317 0, /* src_mask */
1318 0, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1320
3b421ab3
AM		 1321 HOWTO (R_PPC64_TOCSAVE,
1322 0, /* rightshift */
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1324 32, /* bitsize */
1325 FALSE, /* pc_relative */
1326 0, /* bitpos */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE, /* partial_inplace */
1331 0, /* src_mask */
1332 0, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1334
411e1bfb
AM		 1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64,
1338 0, /* rightshift */
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1340 64, /* bitsize */
1341 FALSE, /* pc_relative */
1342 0, /* bitpos */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE, /* partial_inplace */
1347 0, /* src_mask */
1348 ONES (64), /* dst_mask */
1349 FALSE), /* pcrel_offset */
1350
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64,
1355 0, /* rightshift */
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1357 64, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE, /* partial_inplace */
1364 0, /* src_mask */
1365 ONES (64), /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16,
1370 0, /* rightshift */
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1372 16, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO,
1385 0, /* rightshift */
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 16, /* bitsize */
1388 FALSE, /* pc_relative */
1389 0, /* bitpos */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE, /* partial_inplace */
1394 0, /* src_mask */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1397
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 16, /* bitsize */
1403 FALSE, /* pc_relative */
1404 0, /* bitpos */
f9c6b907 1405 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE, /* partial_inplace */
1409 0, /* src_mask */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1412
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 16, /* bitsize */
1418 FALSE, /* pc_relative */
1419 0, /* bitpos */
f9c6b907 1420 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE, /* partial_inplace */
1424 0, /* src_mask */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1427
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 16, /* bitsize */
1433 FALSE, /* pc_relative */
1434 0, /* bitpos */
1435 complain_overflow_dont, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE, /* partial_inplace */
1439 0, /* src_mask */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1442
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 16, /* bitsize */
1448 FALSE, /* pc_relative */
1449 0, /* bitpos */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE, /* partial_inplace */
1454 0, /* src_mask */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1457
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 16, /* bitsize */
1463 FALSE, /* pc_relative */
1464 0, /* bitpos */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE, /* partial_inplace */
1469 0, /* src_mask */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1472
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 16, /* bitsize */
1478 FALSE, /* pc_relative */
1479 0, /* bitpos */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE, /* partial_inplace */
1484 0, /* src_mask */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1487
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS,
1490 0, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 16, /* bitsize */
1493 FALSE, /* pc_relative */
1494 0, /* bitpos */
1495 complain_overflow_signed, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE, /* partial_inplace */
1499 0, /* src_mask */
1500 0xfffc, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1502
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS,
1505 0, /* rightshift */
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 16, /* bitsize */
1508 FALSE, /* pc_relative */
1509 0, /* bitpos */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE, /* partial_inplace */
1514 0, /* src_mask */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1517
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64,
1521 0, /* rightshift */
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1523 64, /* bitsize */
1524 FALSE, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE, /* partial_inplace */
1530 0, /* src_mask */
1531 ONES (64), /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16,
1536 0, /* rightshift */
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1538 16, /* bitsize */
1539 FALSE, /* pc_relative */
1540 0, /* bitpos */
1541 complain_overflow_signed, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE, /* partial_inplace */
1545 0, /* src_mask */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1548
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO,
1551 0, /* rightshift */
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1553 16, /* bitsize */
1554 FALSE, /* pc_relative */
1555 0, /* bitpos */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE, /* partial_inplace */
1560 0, /* src_mask */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1563
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1568 16, /* bitsize */
1569 FALSE, /* pc_relative */
1570 0, /* bitpos */
f9c6b907 1571 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE, /* partial_inplace */
1575 0, /* src_mask */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1578
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1583 16, /* bitsize */
1584 FALSE, /* pc_relative */
1585 0, /* bitpos */
f9c6b907 1586 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE, /* partial_inplace */
1590 0, /* src_mask */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1593
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 16, /* bitsize */
1599 FALSE, /* pc_relative */
1600 0, /* bitpos */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE, /* partial_inplace */
1605 0, /* src_mask */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1608
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1613 16, /* bitsize */
1614 FALSE, /* pc_relative */
1615 0, /* bitpos */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE, /* partial_inplace */
1620 0, /* src_mask */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1623
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1628 16, /* bitsize */
1629 FALSE, /* pc_relative */
1630 0, /* bitpos */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE, /* partial_inplace */
1635 0, /* src_mask */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1638
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 16, /* bitsize */
1644 FALSE, /* pc_relative */
1645 0, /* bitpos */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE, /* partial_inplace */
1650 0, /* src_mask */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1653
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS,
1656 0, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 16, /* bitsize */
1659 FALSE, /* pc_relative */
1660 0, /* bitpos */
1661 complain_overflow_signed, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE, /* partial_inplace */
1665 0, /* src_mask */
1666 0xfffc, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1668
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS,
1671 0, /* rightshift */
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 16, /* bitsize */
1674 FALSE, /* pc_relative */
1675 0, /* bitpos */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE, /* partial_inplace */
1680 0, /* src_mask */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1683
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16,
1688 0, /* rightshift */
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1690 16, /* bitsize */
1691 FALSE, /* pc_relative */
1692 0, /* bitpos */
1693 complain_overflow_signed, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1696 FALSE, /* partial_inplace */
5bd4f169
AM		 1697 0, /* src_mask */
1698 0xffff, /* dst_mask */
b34976b6 1699 FALSE), /* pcrel_offset */
5bd4f169 1700
411e1bfb
AM		 1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1703 0, /* rightshift */
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 16, /* bitsize */
b34976b6 1706 FALSE, /* pc_relative */
5bd4f169
AM		 1707 0, /* bitpos */
1708 complain_overflow_dont, /* complain_on_overflow */
805fc799 1709 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1711 FALSE, /* partial_inplace */
5bd4f169
AM		 1712 0, /* src_mask */
1713 0xffff, /* dst_mask */
b34976b6 1714 FALSE), /* pcrel_offset */
5bd4f169 1715
411e1bfb
AM		 1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 16, /* bitsize */
b34976b6 1721 FALSE, /* pc_relative */
5bd4f169 1722 0, /* bitpos */
f9c6b907 1723 complain_overflow_signed, /* complain_on_overflow */
805fc799 1724 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1726 FALSE, /* partial_inplace */
5bd4f169
AM		 1727 0, /* src_mask */
1728 0xffff, /* dst_mask */
b34976b6 1729 FALSE), /* pcrel_offset */
5bd4f169 1730
411e1bfb
AM		 1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 16, /* bitsize */
b34976b6 1736 FALSE, /* pc_relative */
5bd4f169 1737 0, /* bitpos */
f9c6b907 1738 complain_overflow_signed, /* complain_on_overflow */
805fc799 1739 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1741 FALSE, /* partial_inplace */
5bd4f169
AM		 1742 0, /* src_mask */
1743 0xffff, /* dst_mask */
b34976b6 1744 FALSE), /* pcrel_offset */
5bd4f169 1745
411e1bfb
AM		 1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1750 0, /* rightshift */
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1752 16, /* bitsize */
b34976b6 1753 FALSE, /* pc_relative */
5bd4f169 1754 0, /* bitpos */
411e1bfb
AM		 1755 complain_overflow_signed, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1758 FALSE, /* partial_inplace */
d006db6c 1759 0, /* src_mask */
411e1bfb 1760 0xffff, /* dst_mask */
b34976b6 1761 FALSE), /* pcrel_offset */
5bd4f169 1762
411e1bfb
AM		 1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1765 0, /* rightshift */
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1767 16, /* bitsize */
b34976b6 1768 FALSE, /* pc_relative */
5bd4f169 1769 0, /* bitpos */
411e1bfb
AM		 1770 complain_overflow_dont, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1773 FALSE, /* partial_inplace */
d006db6c 1774 0, /* src_mask */
411e1bfb 1775 0xffff, /* dst_mask */
b34976b6 1776 FALSE), /* pcrel_offset */
5bd4f169 1777
411e1bfb
AM		 1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1780 16, /* rightshift */
5bd4f169
AM		 1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
b34976b6 1783 FALSE, /* pc_relative */
5bd4f169 1784 0, /* bitpos */
f9c6b907 1785 complain_overflow_signed, /* complain_on_overflow */
805fc799 1786 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1788 FALSE, /* partial_inplace */
d006db6c 1789 0, /* src_mask */
411e1bfb 1790 0xffff, /* dst_mask */
b34976b6 1791 FALSE), /* pcrel_offset */
5bd4f169 1792
411e1bfb
AM		 1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1795 16, /* rightshift */
5bd4f169
AM		 1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1797 16, /* bitsize */
b34976b6 1798 FALSE, /* pc_relative */
5bd4f169 1799 0, /* bitpos */
f9c6b907 1800 complain_overflow_signed, /* complain_on_overflow */
805fc799 1801 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1803 FALSE, /* partial_inplace */
d006db6c 1804 0, /* src_mask */
411e1bfb 1805 0xffff, /* dst_mask */
b34976b6 1806 FALSE), /* pcrel_offset */
5bd4f169 1807
411e1bfb
AM		 1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1811 0, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 16, /* bitsize */
b34976b6 1814 FALSE, /* pc_relative */
5bd4f169 1815 0, /* bitpos */
411e1bfb 1816 complain_overflow_signed, /* complain_on_overflow */
805fc799 1817 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1819 FALSE, /* partial_inplace */
d006db6c 1820 0, /* src_mask */
5bd4f169 1821 0xfffc, /* dst_mask */
b34976b6 1822 FALSE), /* pcrel_offset */
5bd4f169 1823
411e1bfb
AM		 1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1826 0, /* rightshift */
c061c2d8
AM		 1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1828 16, /* bitsize */
b34976b6 1829 FALSE, /* pc_relative */
5bd4f169 1830 0, /* bitpos */
411e1bfb
AM		 1831 complain_overflow_dont, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1834 FALSE, /* partial_inplace */
d006db6c 1835 0, /* src_mask */
c061c2d8 1836 0xfffc, /* dst_mask */
b34976b6 1837 FALSE), /* pcrel_offset */
5bd4f169 1838
411e1bfb
AM		 1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1841 16, /* rightshift */
5bd4f169
AM		 1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1843 16, /* bitsize */
b34976b6 1844 FALSE, /* pc_relative */
5bd4f169 1845 0, /* bitpos */
f9c6b907 1846 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1849 FALSE, /* partial_inplace */
d006db6c 1850 0, /* src_mask */
411e1bfb 1851 0xffff, /* dst_mask */
b34976b6 1852 FALSE), /* pcrel_offset */
5bd4f169 1853
411e1bfb
AM		 1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1858 16, /* bitsize */
1859 FALSE, /* pc_relative */
1860 0, /* bitpos */
f9c6b907 1861 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE, /* partial_inplace */
1865 0, /* src_mask */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1868
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1872 0, /* rightshift */
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 16, /* bitsize */
b34976b6 1875 FALSE, /* pc_relative */
5bd4f169
AM		 1876 0, /* bitpos */
1877 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1878 ppc64_elf_unhandled_reloc, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1880 FALSE, /* partial_inplace */
d006db6c 1881 0, /* src_mask */
ad8e1ba5 1882 0xfffc, /* dst_mask */
b34976b6 1883 FALSE), /* pcrel_offset */
5bd4f169 1884
411e1bfb
AM		 1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1887 0, /* rightshift */
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1889 16, /* bitsize */
b34976b6 1890 FALSE, /* pc_relative */
5bd4f169
AM		 1891 0, /* bitpos */
1892 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1895 FALSE, /* partial_inplace */
d006db6c 1896 0, /* src_mask */
ad8e1ba5 1897 0xfffc, /* dst_mask */
b34976b6 1898 FALSE), /* pcrel_offset */
5bd4f169 1899
411e1bfb
AM		 1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI,
1902 16, /* rightshift */
5bd4f169
AM		 1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1904 16, /* bitsize */
b34976b6 1905 FALSE, /* pc_relative */
5bd4f169 1906 0, /* bitpos */
f9c6b907 1907 complain_overflow_signed, /* complain_on_overflow */
805fc799 1908 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1909 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1910 FALSE, /* partial_inplace */
d006db6c 1911 0, /* src_mask */
411e1bfb 1912 0xffff, /* dst_mask */
b34976b6 1913 FALSE), /* pcrel_offset */
5bd4f169 1914
411e1bfb
AM		 1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA,
1917 16, /* rightshift */
5bd4f169
AM		 1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1919 16, /* bitsize */
b34976b6 1920 FALSE, /* pc_relative */
5bd4f169 1921 0, /* bitpos */
f9c6b907 1922 complain_overflow_signed, /* complain_on_overflow */
805fc799 1923 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1924 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1925 FALSE, /* partial_inplace */
d006db6c 1926 0, /* src_mask */
411e1bfb 1927 0xffff, /* dst_mask */
b34976b6 1928 FALSE), /* pcrel_offset */
5bd4f169 1929
25f23106
AM		 1930 HOWTO (R_PPC64_JMP_IREL, /* type */
1931 0, /* rightshift */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1933 0, /* bitsize */
1934 FALSE, /* pc_relative */
1935 0, /* bitpos */
1936 complain_overflow_dont, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE, /* partial_inplace */
1940 0, /* src_mask */
1941 0, /* dst_mask */
1942 FALSE), /* pcrel_offset */
1943
e054468f
AM		 1944 HOWTO (R_PPC64_IRELATIVE, /* type */
1945 0, /* rightshift */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1947 64, /* bitsize */
1948 FALSE, /* pc_relative */
1949 0, /* bitpos */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 bfd_elf_generic_reloc, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE, /* partial_inplace */
1954 0, /* src_mask */
1955 ONES (64), /* dst_mask */
1956 FALSE), /* pcrel_offset */
1957
25f23106
AM		 1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16, /* type */
1960 0, /* rightshift */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1962 16, /* bitsize */
1963 TRUE, /* pc_relative */
1964 0, /* bitpos */
b80eed39 1965 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE, /* partial_inplace */
1969 0, /* src_mask */
1970 0xffff, /* dst_mask */
1971 TRUE), /* pcrel_offset */
1972
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO, /* type */
1975 0, /* rightshift */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1977 16, /* bitsize */
1978 TRUE, /* pc_relative */
1979 0, /* bitpos */
1980 complain_overflow_dont,/* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE, /* partial_inplace */
1984 0, /* src_mask */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1987
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1992 16, /* bitsize */
1993 TRUE, /* pc_relative */
1994 0, /* bitpos */
f9c6b907 1995 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE, /* partial_inplace */
1999 0, /* src_mask */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2002
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 16, /* bitsize */
2009 TRUE, /* pc_relative */
2010 0, /* bitpos */
f9c6b907 2011 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 2012 ppc64_elf_ha_reloc, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE, /* partial_inplace */
2015 0, /* src_mask */
2016 0xffff, /* dst_mask */
2017 TRUE), /* pcrel_offset */
2018
f9c6b907
AM		 2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2023 16, /* bitsize */
2024 FALSE, /* pc_relative */
2025 0, /* bitpos */
2026 complain_overflow_dont, /* complain_on_overflow */
2027 bfd_elf_generic_reloc, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE, /* partial_inplace */
2030 0, /* src_mask */
2031 0xffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2033
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2038 16, /* bitsize */
2039 FALSE, /* pc_relative */
2040 0, /* bitpos */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE, /* partial_inplace */
2045 0, /* src_mask */
2046 0xffff, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2048
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2053 16, /* bitsize */
2054 FALSE, /* pc_relative */
2055 0, /* bitpos */
2056 complain_overflow_dont, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE, /* partial_inplace */
2060 0, /* src_mask */
2061 0xffff, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2063
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2068 16, /* bitsize */
2069 FALSE, /* pc_relative */
2070 0, /* bitpos */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE, /* partial_inplace */
2075 0, /* src_mask */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2078
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2083 16, /* bitsize */
2084 FALSE, /* pc_relative */
2085 0, /* bitpos */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE, /* partial_inplace */
2090 0, /* src_mask */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2093
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2098 16, /* bitsize */
2099 FALSE, /* pc_relative */
2100 0, /* bitpos */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE, /* partial_inplace */
2105 0, /* src_mask */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2108
45965137
AM		 2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2111 0, /* rightshift */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2113 64, /* bitsize */
2114 FALSE, /* pc_relative */
2115 0, /* bitpos */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 bfd_elf_generic_reloc, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE, /* partial_inplace */
2120 0, /* src_mask */
2121 ONES (64), /* dst_mask */
2122 FALSE), /* pcrel_offset */
2123
5bd4f169
AM		 2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2126 0, /* rightshift */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2128 0, /* bitsize */
b34976b6 2129 FALSE, /* pc_relative */
5bd4f169
AM		 2130 0, /* bitpos */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 NULL, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 2134 FALSE, /* partial_inplace */
5bd4f169
AM		 2135 0, /* src_mask */
2136 0, /* dst_mask */
b34976b6 2137 FALSE), /* pcrel_offset */
5bd4f169
AM		 2138
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2141 0, /* rightshift */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2143 0, /* bitsize */
b34976b6 2144 FALSE, /* pc_relative */
5bd4f169
AM		 2145 0, /* bitpos */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 NULL, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 2149 FALSE, /* partial_inplace */
5bd4f169
AM		 2150 0, /* src_mask */
2151 0, /* dst_mask */
b34976b6 2152 FALSE), /* pcrel_offset */
5bd4f169
AM		 2153};
2154
2155\f
2156/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2157 be done. */
2158
2159static void
4ce794b7 2160ppc_howto_init (void)
5bd4f169
AM		 2161{
2162 unsigned int i, type;
2163
2164 for (i = 0;
2165 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2166 i++)
2167 {
2168 type = ppc64_elf_howto_raw[i].type;
2169 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2170 / sizeof (ppc64_elf_howto_table[0])));
2171 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2172 }
2173}
2174
2175static reloc_howto_type *
4ce794b7
AM		 2176ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2177 bfd_reloc_code_real_type code)
5bd4f169 2178{
411e1bfb 2179 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 2180
2181 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2182 /* Initialize howto table if needed. */
2183 ppc_howto_init ();
2184
4ce794b7 2185 switch (code)
5bd4f169
AM		 2186 {
2187 default:
4ce794b7 2188 return NULL;
5bd4f169 2189
411e1bfb
AM		 2190 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2191 break;
2192 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2193 break;
2194 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2195 break;
2196 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2197 break;
2198 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2199 break;
2200 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2201 break;
f9c6b907
AM		 2202 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2203 break;
411e1bfb 2204 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2205 break;
f9c6b907
AM		 2206 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2207 break;
411e1bfb 2208 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2209 break;
411e1bfb 2210 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2211 break;
411e1bfb 2212 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2213 break;
411e1bfb 2214 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2215 break;
411e1bfb 2216 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2217 break;
411e1bfb 2218 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2219 break;
411e1bfb 2220 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2221 break;
411e1bfb 2222 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2223 break;
411e1bfb 2224 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2225 break;
411e1bfb 2226 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2227 break;
411e1bfb 2228 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2229 break;
411e1bfb 2230 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2231 break;
411e1bfb 2232 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2233 break;
411e1bfb 2234 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2235 break;
411e1bfb 2236 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2237 break;
411e1bfb 2238 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2239 break;
411e1bfb 2240 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2241 break;
411e1bfb 2242 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2243 break;
411e1bfb 2244 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2245 break;
411e1bfb 2246 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2247 break;
411e1bfb 2248 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2249 break;
411e1bfb 2250 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2251 break;
411e1bfb 2252 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2253 break;
411e1bfb 2254 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2255 break;
411e1bfb 2256 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2257 break;
411e1bfb 2258 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2259 break;
411e1bfb 2260 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2261 break;
411e1bfb 2262 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2263 break;
411e1bfb 2264 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2265 break;
411e1bfb 2266 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2267 break;
411e1bfb 2268 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2269 break;
411e1bfb 2270 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2271 break;
411e1bfb 2272 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2273 break;
411e1bfb 2274 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2275 break;
411e1bfb 2276 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2277 break;
411e1bfb 2278 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2279 break;
411e1bfb 2280 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2281 break;
411e1bfb 2282 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2283 break;
411e1bfb 2284 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2285 break;
411e1bfb 2286 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2287 break;
411e1bfb 2288 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2289 break;
411e1bfb 2290 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2291 break;
411e1bfb 2292 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2293 break;
411e1bfb 2294 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2295 break;
411e1bfb 2296 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2297 break;
411e1bfb 2298 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2299 break;
411e1bfb 2300 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2301 break;
411e1bfb 2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2303 break;
411e1bfb 2304 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2305 break;
411e1bfb 2306 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2307 break;
411e1bfb 2308 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2309 break;
411e1bfb 2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2311 break;
411e1bfb 2312 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2313 break;
727fc41e
AM		 2314 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2315 break;
2316 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2317 break;
411e1bfb 2318 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2319 break;
411e1bfb 2320 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2321 break;
411e1bfb 2322 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2323 break;
411e1bfb 2324 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2325 break;
f9c6b907
AM		 2326 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2327 break;
411e1bfb 2328 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2329 break;
f9c6b907
AM		 2330 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2331 break;
411e1bfb 2332 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2333 break;
411e1bfb
AM		 2334 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2335 break;
2336 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2337 break;
2338 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2339 break;
f9c6b907
AM		 2340 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2341 break;
411e1bfb
AM		 2342 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2343 break;
f9c6b907
AM		 2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2345 break;
411e1bfb
AM		 2346 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2347 break;
2348 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2349 break;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2351 break;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2353 break;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2355 break;
2356 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2357 break;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2359 break;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2361 break;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2363 break;
2364 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2365 break;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2367 break;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2369 break;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2371 break;
2372 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2373 break;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2375 break;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2377 break;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2379 break;
2380 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2381 break;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2383 break;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2385 break;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2387 break;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2389 break;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2391 break;
2392 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2393 break;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2395 break;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2397 break;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2399 break;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2401 break;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2403 break;
25f23106
AM		 2404 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2405 break;
2406 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2407 break;
2408 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2409 break;
2410 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2411 break;
45965137
AM		 2412 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2413 break;
411e1bfb
AM		 2414 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2415 break;
2416 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2417 break;
2418 }
2419
4ce794b7 2420 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2421};
2422
157090f7
AM		 2423static reloc_howto_type *
2424ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2425 const char *r_name)
2426{
2427 unsigned int i;
2428
2429 for (i = 0;
2430 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2431 i++)
2432 if (ppc64_elf_howto_raw[i].name != NULL
2433 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2434 return &ppc64_elf_howto_raw[i];
2435
2436 return NULL;
2437}
2438
5bd4f169
AM		 2439/* Set the howto pointer for a PowerPC ELF reloc. */
2440
2441static void
4ce794b7
AM		 2442ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2443 Elf_Internal_Rela *dst)
5bd4f169 2444{
65f38f15
AM		 2445 unsigned int type;
2446
ef60b7ff 2447 /* Initialize howto table if needed. */
5bd4f169 2448 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2449 ppc_howto_init ();
2450
65f38f15 2451 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2452 if (type >= (sizeof (ppc64_elf_howto_table)
2453 / sizeof (ppc64_elf_howto_table[0])))
2454 {
2455 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2456 abfd, (int) type);
2457 type = R_PPC64_NONE;
d0fb9a8d 2458 }
65f38f15 2459 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2460}
2461
04c9666a 2462/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2463
2464static bfd_reloc_status_type
4ce794b7
AM		 2465ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2466 void *data, asection *input_section,
2467 bfd *output_bfd, char **error_message)
5bd4f169 2468{
805fc799
AM		 2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2471 link time. */
2472 if (output_bfd != NULL)
cedb70c5 2473 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2474 input_section, output_bfd, error_message);
2475
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2478 doesn't matter. */
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2481}
5bd4f169 2482
2441e016
AM		 2483static bfd_reloc_status_type
2484ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2487{
2488 if (output_bfd != NULL)
2489 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2490 input_section, output_bfd, error_message);
2491
699733f6
AM		 2492 if (strcmp (symbol->section->name, ".opd") == 0
2493 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2494 {
2495 bfd_vma dest = opd_entry_value (symbol->section,
2496 symbol->value + reloc_entry->addend,
aef36ac1 2497 NULL, NULL, FALSE);
2441e016
AM		 2498 if (dest != (bfd_vma) -1)
2499 reloc_entry->addend = dest - (symbol->value
2500 + symbol->section->output_section->vma
2501 + symbol->section->output_offset);
2502 }
810d4e75
AM		 2503 else
2504 {
2505 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2506
2507 if (symbol->section->owner != abfd
2508 && abiversion (symbol->section->owner) >= 2)
2509 {
2510 unsigned int i;
2511
2512 for (i = 0; i < symbol->section->owner->symcount; ++i)
2513 {
2514 asymbol *symdef = symbol->section->owner->outsymbols[i];
2515
2516 if (strcmp (symdef->name, symbol->name) == 0)
2517 {
2518 elfsym = (elf_symbol_type *) symdef;
2519 break;
2520 }
2521 }
2522 }
2523 reloc_entry->addend
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2525 }
2441e016
AM		 2526 return bfd_reloc_continue;
2527}
2528
805fc799 2529static bfd_reloc_status_type
4ce794b7
AM		 2530ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2531 void *data, asection *input_section,
2532 bfd *output_bfd, char **error_message)
805fc799
AM		 2533{
2534 long insn;
04c9666a 2535 enum elf_ppc64_reloc_type r_type;
805fc799 2536 bfd_size_type octets;
794e51c0
AM		 2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2 = TRUE;
805fc799
AM		 2539
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2542 link time. */
5bd4f169 2543 if (output_bfd != NULL)
cedb70c5 2544 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2545 input_section, output_bfd, error_message);
2546
2547 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2548 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2549 insn &= ~(0x01 << 21);
4ce794b7 2550 r_type = reloc_entry->howto->type;
805fc799
AM		 2551 if (r_type == R_PPC64_ADDR14_BRTAKEN
2552 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2553 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799 2554
794e51c0 2555 if (is_isa_v2)
5bd4f169 2556 {
805fc799
AM		 2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn & (0x14 << 21)) == (0x04 << 21))
2561 insn |= 0x02 << 21;
2562 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2563 insn |= 0x08 << 21;
2564 else
2441e016 2565 goto out;
5bd4f169 2566 }
805fc799
AM		 2567 else
2568 {
2569 bfd_vma target = 0;
2570 bfd_vma from;
5bd4f169 2571
805fc799
AM		 2572 if (!bfd_is_com_section (symbol->section))
2573 target = symbol->value;
2574 target += symbol->section->output_section->vma;
2575 target += symbol->section->output_offset;
2576 target += reloc_entry->addend;
5bd4f169 2577
805fc799
AM		 2578 from = (reloc_entry->address
2579 + input_section->output_offset
2580 + input_section->output_section->vma);
5bd4f169 2581
805fc799
AM		 2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma) (target - from) < 0)
2584 insn ^= 0x01 << 21;
2585 }
4ce794b7 2586 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2587 out:
2588 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
805fc799 2590}
5bd4f169 2591
805fc799 2592static bfd_reloc_status_type
4ce794b7
AM		 2593ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2594 void *data, asection *input_section,
2595 bfd *output_bfd, char **error_message)
805fc799
AM		 2596{
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2599 link time. */
2600 if (output_bfd != NULL)
cedb70c5 2601 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2602 input_section, output_bfd, error_message);
5bd4f169 2603
805fc799
AM		 2604 /* Subtract the symbol section base address. */
2605 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2606 return bfd_reloc_continue;
2607}
2608
805fc799 2609static bfd_reloc_status_type
4ce794b7
AM		 2610ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2611 void *data, asection *input_section,
2612 bfd *output_bfd, char **error_message)
805fc799
AM		 2613{
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2616 link time. */
2617 if (output_bfd != NULL)
cedb70c5 2618 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2619 input_section, output_bfd, error_message);
2620
2621 /* Subtract the symbol section base address. */
2622 reloc_entry->addend -= symbol->section->output_section->vma;
2623
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry->addend += 0x8000;
2626 return bfd_reloc_continue;
2627}
2628
2629static bfd_reloc_status_type
4ce794b7
AM		 2630ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2631 void *data, asection *input_section,
2632 bfd *output_bfd, char **error_message)
805fc799
AM		 2633{
2634 bfd_vma TOCstart;
2635
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2638 link time. */
2639 if (output_bfd != NULL)
cedb70c5 2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2641 input_section, output_bfd, error_message);
2642
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2644 if (TOCstart == 0)
1c865ab2 2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2646
2647 /* Subtract the TOC base address. */
2648 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2649 return bfd_reloc_continue;
2650}
2651
2652static bfd_reloc_status_type
4ce794b7
AM		 2653ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
805fc799
AM		 2656{
2657 bfd_vma TOCstart;
2658
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2661 link time. */
2662 if (output_bfd != NULL)
cedb70c5 2663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2664 input_section, output_bfd, error_message);
2665
2666 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2667 if (TOCstart == 0)
1c865ab2 2668 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2669
2670 /* Subtract the TOC base address. */
2671 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2672
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry->addend += 0x8000;
2675 return bfd_reloc_continue;
2676}
2677
2678static bfd_reloc_status_type
4ce794b7
AM		 2679ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2680 void *data, asection *input_section,
2681 bfd *output_bfd, char **error_message)
805fc799
AM		 2682{
2683 bfd_vma TOCstart;
2684 bfd_size_type octets;
2685
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2688 link time. */
2689 if (output_bfd != NULL)
cedb70c5 2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2691 input_section, output_bfd, error_message);
2692
2693 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2694 if (TOCstart == 0)
1c865ab2 2695 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2696
2697 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2698 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2699 return bfd_reloc_ok;
2700}
2701
2702static bfd_reloc_status_type
4ce794b7
AM		 2703ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2704 void *data, asection *input_section,
2705 bfd *output_bfd, char **error_message)
805fc799
AM		 2706{
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2709 link time. */
2710 if (output_bfd != NULL)
cedb70c5 2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2712 input_section, output_bfd, error_message);
2713
2714 if (error_message != NULL)
2715 {
2716 static char buf[60];
2717 sprintf (buf, "generic linker can't handle %s",
2718 reloc_entry->howto->name);
2719 *error_message = buf;
2720 }
2721 return bfd_reloc_dangerous;
2722}
2723
927be08e
AM		 2724/* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2726struct got_entry
2727{
2728 struct got_entry *next;
2729
2730 /* The symbol addend that we'll be placing in the GOT. */
2731 bfd_vma addend;
2732
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2738
2739 Point to the BFD owning this GOT entry. */
2740 bfd *owner;
2741
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2744 unsigned char tls_type;
927be08e
AM		 2745
2746 /* Non-zero if got.ent points to real entry. */
f961d9dd 2747 unsigned char is_indirect;
927be08e
AM		 2748
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2750 union
2751 {
2752 bfd_signed_vma refcount;
2753 bfd_vma offset;
2754 struct got_entry *ent;
2755 } got;
2756};
2757
2758/* The same for PLT. */
2759struct plt_entry
2760{
2761 struct plt_entry *next;
2762
2763 bfd_vma addend;
2764
2765 union
2766 {
2767 bfd_signed_vma refcount;
2768 bfd_vma offset;
2769 } plt;
2770};
2771
e717da7e
AM		 2772struct ppc64_elf_obj_tdata
2773{
2774 struct elf_obj_tdata elf;
2775
2776 /* Shortcuts to dynamic linker sections. */
2777 asection *got;
2778 asection *relgot;
2779
b3fac117
AM		 2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection *deleted_section;
81688140 2783
927be08e 2784 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2785 sections means we potentially need one of these for each input bfd. */
927be08e 2786 struct got_entry tlsld_got;
8860955f 2787
729eabd5
AM		 2788 union {
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela *relocs;
2791
2792 /* Section contents. */
2793 bfd_byte *contents;
2794 } opd;
d77c8a4b
AM		 2795
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
98528052
AM		 2798 unsigned int has_small_toc_reloc : 1;
2799
560c8763
AM		 2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn : 1;
e717da7e
AM		 2803};
2804
2805#define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2807
2808#define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2810
0c8d6e5c
AM		 2811#define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2814
e717da7e
AM		 2815/* Override the generic function because we store some extras. */
2816
2817static bfd_boolean
2818ppc64_elf_mkobject (bfd *abfd)
2819{
0ffa91dd 2820 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2821 PPC64_ELF_DATA);
e717da7e
AM		 2822}
2823
feee612b
AM		 2824/* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2826
b34976b6 2827static bfd_boolean
4ce794b7 2828ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2829{
2830 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2831 {
2832 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2833
2834 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2835 {
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd->arch_info = abfd->arch_info->next;
2838 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2839 }
2840 }
b34976b6 2841 return TRUE;
feee612b
AM		 2842}
2843
d37c89e5
AM		 2844/* Support for core dump NOTE sections. */
2845
2846static bfd_boolean
2847ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2848{
eea6121a 2849 size_t offset, size;
d37c89e5
AM		 2850
2851 if (note->descsz != 504)
2852 return FALSE;
2853
2854 /* pr_cursig */
228e534f 2855 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
d37c89e5
AM		 2856
2857 /* pr_pid */
228e534f 2858 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM		 2859
2860 /* pr_reg */
2861 offset = 112;
eea6121a 2862 size = 384;
d37c89e5
AM		 2863
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2866 size, note->descpos + offset);
d37c89e5
AM		 2867}
2868
2869static bfd_boolean
2870ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2871{
2872 if (note->descsz != 136)
2873 return FALSE;
2874
228e534f 2875 elf_tdata (abfd)->core->pid
bc989cdc 2876 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 2877 elf_tdata (abfd)->core->program
d37c89e5 2878 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 2879 elf_tdata (abfd)->core->command
d37c89e5
AM		 2880 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2881
2882 return TRUE;
2883}
2884
183e98be
AM		 2885static char *
2886ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2887 ...)
2888{
2889 switch (note_type)
2890 {
2891 default:
2892 return NULL;
2893
2894 case NT_PRPSINFO:
2895 {
2896 char data[136];
2897 va_list ap;
2898
2899 va_start (ap, note_type);
75cd47ed 2900 memset (data, 0, sizeof (data));
183e98be
AM		 2901 strncpy (data + 40, va_arg (ap, const char *), 16);
2902 strncpy (data + 56, va_arg (ap, const char *), 80);
2903 va_end (ap);
2904 return elfcore_write_note (abfd, buf, bufsiz,
2905 "CORE", note_type, data, sizeof (data));
2906 }
2907
2908 case NT_PRSTATUS:
2909 {
2910 char data[504];
2911 va_list ap;
2912 long pid;
2913 int cursig;
2914 const void *greg;
2915
2916 va_start (ap, note_type);
2917 memset (data, 0, 112);
2918 pid = va_arg (ap, long);
2919 bfd_put_32 (abfd, pid, data + 32);
2920 cursig = va_arg (ap, int);
2921 bfd_put_16 (abfd, cursig, data + 12);
2922 greg = va_arg (ap, const void *);
2923 memcpy (data + 112, greg, 384);
2924 memset (data + 496, 0, 8);
2925 va_end (ap);
2926 return elfcore_write_note (abfd, buf, bufsiz,
2927 "CORE", note_type, data, sizeof (data));
2928 }
2929 }
2930}
2931
5d35169e
AM		 2932/* Add extra PPC sections. */
2933
b35d266b 2934static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2935{
0112cd26
NC		 2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2942 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2943};
2944
7c8fe5c4
AM		 2945enum _ppc64_sec_type {
2946 sec_normal = 0,
2947 sec_opd = 1,
2948 sec_toc = 2
2949};
2950
f0abc2a1
AM		 2951struct _ppc64_elf_section_data
2952{
2953 struct bfd_elf_section_data elf;
411e1bfb 2954
f0abc2a1
AM		 2955 union
2956 {
51aecdc5
AM		 2957 /* An array with one entry for each opd function descriptor,
2958 and some spares since opd entries may be either 16 or 24 bytes. */
2959#define OPD_NDX(OFF) ((OFF) >> 4)
74f0fb50
AM		 2960 struct _opd_sec_data
2961 {
2962 /* Points to the function code section for local opd entries. */
2963 asection **func_sec;
2964
2965 /* After editing .opd, adjust references to opd local syms. */
2966 long *adjust;
2967 } opd;
7c8fe5c4 2968
3a71aa26
AM		 2969 /* An array for toc sections, indexed by offset/8. */
2970 struct _toc_sec_data
2971 {
2972 /* Specifies the relocation symbol index used at a given toc offset. */
2973 unsigned *symndx;
2974
2975 /* And the relocation addend. */
2976 bfd_vma *add;
2977 } toc;
7c8fe5c4
AM		 2978 } u;
2979
2980 enum _ppc64_sec_type sec_type:2;
411e1bfb 2981
7c8fe5c4
AM		 2982 /* Flag set when small branches are detected. Used to
2983 select suitable defaults for the stub group size. */
2984 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2985};
2986
2987#define ppc64_elf_section_data(sec) \
411e1bfb 2988 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2989
2990static bfd_boolean
4ce794b7 2991ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2992{
f592407e
AM		 2993 if (!sec->used_by_bfd)
2994 {
2995 struct _ppc64_elf_section_data *sdata;
2996 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2997
f592407e
AM		 2998 sdata = bfd_zalloc (abfd, amt);
2999 if (sdata == NULL)
3000 return FALSE;
3001 sec->used_by_bfd = sdata;
3002 }
f0abc2a1
AM		 3003
3004 return _bfd_elf_new_section_hook (abfd, sec);
3005}
4025353c 3006
74f0fb50 3007static struct _opd_sec_data *
4025353c
AM		 3008get_opd_info (asection * sec)
3009{
3010 if (sec != NULL
3011 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 3012 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 3013 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM		 3014 return NULL;
3015}
90e3cdf2
JJ		 3016\f
3017/* Parameters for the qsort hook. */
90e3cdf2
JJ		 3018static bfd_boolean synthetic_relocatable;
3019
699733f6 3020/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 3021
3022static int
3023compare_symbols (const void *ap, const void *bp)
3024{
3025 const asymbol *a = * (const asymbol **) ap;
3026 const asymbol *b = * (const asymbol **) bp;
3027
699733f6
AM		 3028 /* Section symbols first. */
3029 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 3030 return -1;
699733f6 3031 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 3032 return 1;
3033
699733f6 3034 /* then .opd symbols. */
ffcfec52
AM		 3035 if (strcmp (a->section->name, ".opd") == 0
3036 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 3037 return -1;
ffcfec52
AM		 3038 if (strcmp (a->section->name, ".opd") != 0
3039 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ		 3040 return 1;
3041
699733f6 3042 /* then other code symbols. */
90e3cdf2
JJ		 3043 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 == (SEC_CODE | SEC_ALLOC)
3045 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3046 != (SEC_CODE | SEC_ALLOC))
3047 return -1;
3048
3049 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 != (SEC_CODE | SEC_ALLOC)
3051 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3052 == (SEC_CODE | SEC_ALLOC))
3053 return 1;
3054
3055 if (synthetic_relocatable)
3056 {
3057 if (a->section->id < b->section->id)
3058 return -1;
3059
3060 if (a->section->id > b->section->id)
3061 return 1;
3062 }
3063
3064 if (a->value + a->section->vma < b->value + b->section->vma)
3065 return -1;
3066
3067 if (a->value + a->section->vma > b->value + b->section->vma)
3068 return 1;
3069
4d35a0aa
AM		 3070 /* For syms with the same value, prefer strong dynamic global function
3071 syms over other syms. */
3072 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3073 return -1;
3074
3075 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3076 return 1;
3077
3078 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3079 return -1;
3080
3081 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3082 return 1;
3083
3084 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3085 return -1;
3086
3087 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3088 return 1;
3089
3090 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3091 return -1;
3092
3093 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3094 return 1;
3095
90e3cdf2
JJ		 3096 return 0;
3097}
3098
699733f6 3099/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 3100
699733f6
AM		 3101static asymbol *
3102sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 3103{
699733f6 3104 long mid;
90e3cdf2 3105
699733f6
AM		 3106 if (id == -1)
3107 {
3108 while (lo < hi)
3109 {
3110 mid = (lo + hi) >> 1;
3111 if (syms[mid]->value + syms[mid]->section->vma < value)
3112 lo = mid + 1;
3113 else if (syms[mid]->value + syms[mid]->section->vma > value)
3114 hi = mid;
3115 else
3116 return syms[mid];
3117 }
3118 }
3119 else
3120 {
3121 while (lo < hi)
3122 {
3123 mid = (lo + hi) >> 1;
3124 if (syms[mid]->section->id < id)
3125 lo = mid + 1;
3126 else if (syms[mid]->section->id > id)
3127 hi = mid;
3128 else if (syms[mid]->value < value)
3129 lo = mid + 1;
3130 else if (syms[mid]->value > value)
3131 hi = mid;
3132 else
3133 return syms[mid];
3134 }
3135 }
3136 return NULL;
90e3cdf2
JJ		 3137}
3138
468392fb
AM		 3139static bfd_boolean
3140section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3141{
3142 bfd_vma vma = *(bfd_vma *) ptr;
3143 return ((section->flags & SEC_ALLOC) != 0
3144 && section->vma <= vma
3145 && vma < section->vma + section->size);
3146}
3147
699733f6 3148/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 3149 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ		 3150
3151static long
a7535cf3
AM		 3152ppc64_elf_get_synthetic_symtab (bfd *abfd,
3153 long static_count, asymbol **static_syms,
3154 long dyn_count, asymbol **dyn_syms,
c9727e01 3155 asymbol **ret)
90e3cdf2
JJ		 3156{
3157 asymbol *s;
699733f6
AM		 3158 long i;
3159 long count;
90e3cdf2 3160 char *names;
a7535cf3 3161 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
ee67d69a 3162 asection *opd = NULL;
90e3cdf2 3163 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 3164 asymbol **syms;
ee67d69a 3165 int abi = abiversion (abfd);
90e3cdf2
JJ		 3166
3167 *ret = NULL;
3168
ee67d69a
AM		 3169 if (abi < 2)
3170 {
3171 opd = bfd_get_section_by_name (abfd, ".opd");
3172 if (opd == NULL && abi == 1)
3173 return 0;
3174 }
90e3cdf2 3175
a7535cf3 3176 symcount = static_count;
c9727e01 3177 if (!relocatable)
a7535cf3 3178 symcount += dyn_count;
90e3cdf2 3179 if (symcount == 0)
c9727e01 3180 return 0;
90e3cdf2 3181
a7535cf3
AM		 3182 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3183 if (syms == NULL)
7356fed5 3184 return -1;
a7535cf3
AM		 3185
3186 if (!relocatable && static_count != 0 && dyn_count != 0)
3187 {
3188 /* Use both symbol tables. */
3189 memcpy (syms, static_syms, static_count * sizeof (*syms));
3190 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3191 }
3192 else if (!relocatable && static_count == 0)
3193 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3194 else
3195 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3196
90e3cdf2 3197 synthetic_relocatable = relocatable;
595da8c5 3198 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3199
c9727e01
AM		 3200 if (!relocatable && symcount > 1)
3201 {
3202 long j;
3203 /* Trim duplicate syms, since we may have merged the normal and
3204 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3205 different values, so trim any with the same value. */
c9727e01
AM		 3206 for (i = 1, j = 1; i < symcount; ++i)
3207 if (syms[i - 1]->value + syms[i - 1]->section->vma
3208 != syms[i]->value + syms[i]->section->vma)
3209 syms[j++] = syms[i];
3210 symcount = j;
3211 }
3212
699733f6 3213 i = 0;
ffcfec52 3214 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM		 3215 ++i;
3216 codesecsym = i;
90e3cdf2 3217
699733f6
AM		 3218 for (; i < symcount; ++i)
3219 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3220 != (SEC_CODE | SEC_ALLOC))
3221 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3222 break;
3223 codesecsymend = i;
90e3cdf2 3224
699733f6
AM		 3225 for (; i < symcount; ++i)
3226 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3227 break;
3228 secsymend = i;
90e3cdf2 3229
699733f6 3230 for (; i < symcount; ++i)
ffcfec52 3231 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM		 3232 break;
3233 opdsymend = i;
90e3cdf2 3234
699733f6
AM		 3235 for (; i < symcount; ++i)
3236 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3237 != (SEC_CODE | SEC_ALLOC))
3238 break;
3239 symcount = i;
3240
c9727e01 3241 count = 0;
90e3cdf2 3242
699733f6 3243 if (relocatable)
90e3cdf2 3244 {
699733f6
AM		 3245 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3246 arelent *r;
3247 size_t size;
3248 long relcount;
90e3cdf2 3249
468392fb
AM		 3250 if (opdsymend == secsymend)
3251 goto done;
3252
699733f6 3253 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3254 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3255 if (relcount == 0)
c9727e01 3256 goto done;
90e3cdf2 3257
7356fed5
AM		 3258 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3259 {
3260 count = -1;
3261 goto done;
3262 }
3263
699733f6 3264 size = 0;
595da8c5 3265 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 3266 {
3267 asymbol *sym;
90e3cdf2 3268
595da8c5 3269 while (r < opd->relocation + relcount
699733f6
AM		 3270 && r->address < syms[i]->value + opd->vma)
3271 ++r;
90e3cdf2 3272
595da8c5 3273 if (r == opd->relocation + relcount)
699733f6 3274 break;
90e3cdf2 3275
699733f6
AM		 3276 if (r->address != syms[i]->value + opd->vma)
3277 continue;
90e3cdf2 3278
699733f6
AM		 3279 if (r->howto->type != R_PPC64_ADDR64)
3280 continue;
90e3cdf2 3281
699733f6
AM		 3282 sym = *r->sym_ptr_ptr;
3283 if (!sym_exists_at (syms, opdsymend, symcount,
3284 sym->section->id, sym->value + r->addend))
3285 {
3286 ++count;
3287 size += sizeof (asymbol);
3288 size += strlen (syms[i]->name) + 2;
3289 }
3290 }
90e3cdf2 3291
699733f6
AM		 3292 s = *ret = bfd_malloc (size);
3293 if (s == NULL)
3294 {
7356fed5 3295 count = -1;
c9727e01 3296 goto done;
699733f6 3297 }
90e3cdf2 3298
699733f6 3299 names = (char *) (s + count);
90e3cdf2 3300
595da8c5 3301 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3302 {
699733f6 3303 asymbol *sym;
90e3cdf2 3304
595da8c5 3305 while (r < opd->relocation + relcount
699733f6
AM		 3306 && r->address < syms[i]->value + opd->vma)
3307 ++r;
90e3cdf2 3308
595da8c5 3309 if (r == opd->relocation + relcount)
699733f6
AM		 3310 break;
3311
3312 if (r->address != syms[i]->value + opd->vma)
3313 continue;
3314
3315 if (r->howto->type != R_PPC64_ADDR64)
3316 continue;
90e3cdf2 3317
699733f6
AM		 3318 sym = *r->sym_ptr_ptr;
3319 if (!sym_exists_at (syms, opdsymend, symcount,
3320 sym->section->id, sym->value + r->addend))
3321 {
3322 size_t len;
3323
3324 *s = *syms[i];
6ba2a415 3325 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3326 s->section = sym->section;
3327 s->value = sym->value + r->addend;
3328 s->name = names;
3329 *names++ = '.';
3330 len = strlen (syms[i]->name);
3331 memcpy (names, syms[i]->name, len + 1);
3332 names += len + 1;
6f610d07
UW		 3333 /* Have udata.p point back to the original symbol this
3334 synthetic symbol was derived from. */
3335 s->udata.p = syms[i];
699733f6
AM		 3336 s++;
3337 }
3338 }
3339 }
3340 else
90e3cdf2 3341 {
468392fb 3342 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
ee67d69a 3343 bfd_byte *contents = NULL;
699733f6 3344 size_t size;
468392fb
AM		 3345 long plt_count = 0;
3346 bfd_vma glink_vma = 0, resolv_vma = 0;
3347 asection *dynamic, *glink = NULL, *relplt = NULL;
3348 arelent *p;
90e3cdf2 3349
ee67d69a 3350 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
699733f6 3351 {
ee67d69a 3352 free_contents_and_exit:
699733f6 3353 if (contents)
ee67d69a 3354 free (contents);
7356fed5 3355 count = -1;
c9727e01 3356 goto done;
699733f6 3357 }
90e3cdf2 3358
699733f6
AM		 3359 size = 0;
3360 for (i = secsymend; i < opdsymend; ++i)
3361 {
3362 bfd_vma ent;
90e3cdf2 3363
5ef11c02
AM		 3364 /* Ignore bogus symbols. */
3365 if (syms[i]->value > opd->size - 8)
3366 continue;
3367
699733f6
AM		 3368 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3369 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3370 {
3371 ++count;
3372 size += sizeof (asymbol);
3373 size += strlen (syms[i]->name) + 2;
3374 }
3375 }
90e3cdf2 3376
468392fb 3377 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3378 if (dyn_count != 0
3379 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3380 {
3381 bfd_byte *dynbuf, *extdyn, *extdynend;
3382 size_t extdynsize;
3383 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3384
3385 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3386 goto free_contents_and_exit;
3387
3388 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3389 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3390
3391 extdyn = dynbuf;
3392 extdynend = extdyn + dynamic->size;
3393 for (; extdyn < extdynend; extdyn += extdynsize)
3394 {
3395 Elf_Internal_Dyn dyn;
3396 (*swap_dyn_in) (abfd, extdyn, &dyn);
3397
3398 if (dyn.d_tag == DT_NULL)
3399 break;
3400
3401 if (dyn.d_tag == DT_PPC64_GLINK)
3402 {
b9e5796b
AM		 3403 /* The first glink stub starts at offset 32; see
3404 comment in ppc64_elf_finish_dynamic_sections. */
3405 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
468392fb
AM		 3406 /* The .glink section usually does not survive the final
3407 link; search for the section (usually .text) where the
3408 glink stubs now reside. */
3409 glink = bfd_sections_find_if (abfd, section_covers_vma,
3410 &glink_vma);
3411 break;
3412 }
3413 }
3414
3415 free (dynbuf);
3416 }
3417
3418 if (glink != NULL)
3419 {
3420 /* Determine __glink trampoline by reading the relative branch
3421 from the first glink stub. */
3422 bfd_byte buf[4];
b9e5796b
AM		 3423 unsigned int off = 0;
3424
3425 while (bfd_get_section_contents (abfd, glink, buf,
3426 glink_vma + off - glink->vma, 4))
468392fb
AM		 3427 {
3428 unsigned int insn = bfd_get_32 (abfd, buf);
3429 insn ^= B_DOT;
3430 if ((insn & ~0x3fffffc) == 0)
b9e5796b
AM		 3431 {
3432 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3433 break;
3434 }
3435 off += 4;
3436 if (off > 4)
3437 break;
468392fb
AM		 3438 }
3439
3440 if (resolv_vma)
3441 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3442
066ee829
AM		 3443 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3444 if (relplt != NULL)
3445 {
3446 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3447 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3448 goto free_contents_and_exit;
68ffbac6 3449
066ee829
AM		 3450 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3451 size += plt_count * sizeof (asymbol);
468392fb 3452
066ee829
AM		 3453 p = relplt->relocation;
3454 for (i = 0; i < plt_count; i++, p++)
e054468f
AM		 3455 {
3456 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3457 if (p->addend != 0)
3458 size += sizeof ("+0x") - 1 + 16;
3459 }
066ee829 3460 }
468392fb
AM		 3461 }
3462
699733f6
AM		 3463 s = *ret = bfd_malloc (size);
3464 if (s == NULL)
7356fed5 3465 goto free_contents_and_exit;
90e3cdf2 3466
468392fb 3467 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3468
699733f6 3469 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3470 {
699733f6 3471 bfd_vma ent;
90e3cdf2 3472
5ef11c02
AM		 3473 if (syms[i]->value > opd->size - 8)
3474 continue;
3475
699733f6
AM		 3476 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3477 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3478 {
c9727e01 3479 long lo, hi;
699733f6 3480 size_t len;
c9727e01 3481 asection *sec = abfd->sections;
90e3cdf2 3482
699733f6
AM		 3483 *s = *syms[i];
3484 lo = codesecsym;
3485 hi = codesecsymend;
3486 while (lo < hi)
3487 {
c9727e01 3488 long mid = (lo + hi) >> 1;
699733f6
AM		 3489 if (syms[mid]->section->vma < ent)
3490 lo = mid + 1;
3491 else if (syms[mid]->section->vma > ent)
3492 hi = mid;
3493 else
c9727e01
AM		 3494 {
3495 sec = syms[mid]->section;
3496 break;
3497 }
699733f6
AM		 3498 }
3499
c9727e01 3500 if (lo >= hi && lo > codesecsym)
699733f6 3501 sec = syms[lo - 1]->section;
699733f6
AM		 3502
3503 for (; sec != NULL; sec = sec->next)
3504 {
3505 if (sec->vma > ent)
3506 break;
63524580
JK		 3507 /* SEC_LOAD may not be set if SEC is from a separate debug
3508 info file. */
3509 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM		 3510 break;
3511 if ((sec->flags & SEC_CODE) != 0)
3512 s->section = sec;
3513 }
6ba2a415 3514 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3515 s->value = ent - s->section->vma;
3516 s->name = names;
3517 *names++ = '.';
3518 len = strlen (syms[i]->name);
3519 memcpy (names, syms[i]->name, len + 1);
3520 names += len + 1;
6f610d07
UW		 3521 /* Have udata.p point back to the original symbol this
3522 synthetic symbol was derived from. */
3523 s->udata.p = syms[i];
699733f6 3524 s++;
90e3cdf2 3525 }
90e3cdf2 3526 }
699733f6 3527 free (contents);
468392fb
AM		 3528
3529 if (glink != NULL && relplt != NULL)
3530 {
3531 if (resolv_vma)
3532 {
3533 /* Add a symbol for the main glink trampoline. */
86a4952b 3534 memset (s, 0, sizeof *s);
468392fb 3535 s->the_bfd = abfd;
6ba2a415 3536 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3537 s->section = glink;
3538 s->value = resolv_vma - glink->vma;
3539 s->name = names;
3540 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3541 names += sizeof ("__glink_PLTresolve");
3542 s++;
3543 count++;
3544 }
3545
3546 /* FIXME: It would be very much nicer to put sym@plt on the
3547 stub rather than on the glink branch table entry. The
3548 objdump disassembler would then use a sensible symbol
3549 name on plt calls. The difficulty in doing so is
3550 a) finding the stubs, and,
3551 b) matching stubs against plt entries, and,
3552 c) there can be multiple stubs for a given plt entry.
3553
3554 Solving (a) could be done by code scanning, but older
3555 ppc64 binaries used different stubs to current code.
3556 (b) is the tricky one since you need to known the toc
3557 pointer for at least one function that uses a pic stub to
3558 be able to calculate the plt address referenced.
3559 (c) means gdb would need to set multiple breakpoints (or
3560 find the glink branch itself) when setting breakpoints
3561 for pending shared library loads. */
3562 p = relplt->relocation;
3563 for (i = 0; i < plt_count; i++, p++)
3564 {
3565 size_t len;
3566
3567 *s = **p->sym_ptr_ptr;
3568 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3569 we are defining a symbol, ensure one of them is set. */
3570 if ((s->flags & BSF_LOCAL) == 0)
3571 s->flags |= BSF_GLOBAL;
6ba2a415 3572 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3573 s->section = glink;
3574 s->value = glink_vma - glink->vma;
3575 s->name = names;
3576 s->udata.p = NULL;
3577 len = strlen ((*p->sym_ptr_ptr)->name);
3578 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3579 names += len;
e054468f
AM		 3580 if (p->addend != 0)
3581 {
3582 memcpy (names, "+0x", sizeof ("+0x") - 1);
3583 names += sizeof ("+0x") - 1;
3584 bfd_sprintf_vma (abfd, names, p->addend);
3585 names += strlen (names);
3586 }
468392fb
AM		 3587 memcpy (names, "@plt", sizeof ("@plt"));
3588 names += sizeof ("@plt");
3589 s++;
b9e5796b
AM		 3590 if (abi < 2)
3591 {
3592 glink_vma += 8;
3593 if (i >= 0x8000)
3594 glink_vma += 4;
3595 }
3596 else
468392fb
AM		 3597 glink_vma += 4;
3598 }
3599 count += plt_count;
3600 }
90e3cdf2
JJ		 3601 }
3602
c9727e01 3603 done:
a7535cf3 3604 free (syms);
90e3cdf2
JJ		 3605 return count;
3606}
5bd4f169 3607\f
65f38f15
AM		 3608/* The following functions are specific to the ELF linker, while
3609 functions above are used generally. Those named ppc64_elf_* are
3610 called by the main ELF linker code. They appear in this file more
3611 or less in the order in which they are called. eg.
3612 ppc64_elf_check_relocs is called early in the link process,
3613 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3614 called.
3615
3616 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3617 functions have both a function code symbol and a function descriptor
3618 symbol. A call to foo in a relocatable object file looks like:
3619
3620 . .text
3621 . x:
3622 . bl .foo
3623 . nop
3624
3625 The function definition in another object file might be:
3626
3627 . .section .opd
3628 . foo: .quad .foo
3629 . .quad .TOC.@tocbase
3630 . .quad 0
3631 .
3632 . .text
3633 . .foo: blr
3634
3635 When the linker resolves the call during a static link, the branch
3636 unsurprisingly just goes to .foo and the .opd information is unused.
3637 If the function definition is in a shared library, things are a little
3638 different: The call goes via a plt call stub, the opd information gets
3639 copied to the plt, and the linker patches the nop.
3640
3641 . x:
3642 . bl .foo_stub
3643 . ld 2,40(1)
3644 .
3645 .
3646 . .foo_stub:
71a39c98
AM		 3647 . std 2,40(1) # in practice, the call stub
3648 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3649 . addi 11,11,Lfoo@toc@l # this is the general idea
3650 . ld 12,0(11)
3651 . ld 2,8(11)
3652 . mtctr 12
3653 . ld 11,16(11)
e86ce104
AM		 3654 . bctr
3655 .
3656 . .section .plt
3657 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3658
3659 The "reloc ()" notation is supposed to indicate that the linker emits
3660 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3661 copying.
3662
3663 What are the difficulties here? Well, firstly, the relocations
3664 examined by the linker in check_relocs are against the function code
3665 sym .foo, while the dynamic relocation in the plt is emitted against
3666 the function descriptor symbol, foo. Somewhere along the line, we need
3667 to carefully copy dynamic link information from one symbol to the other.
3668 Secondly, the generic part of the elf linker will make .foo a dynamic
3669 symbol as is normal for most other backends. We need foo dynamic
3670 instead, at least for an application final link. However, when
3671 creating a shared library containing foo, we need to have both symbols
3672 dynamic so that references to .foo are satisfied during the early
3673 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3674 definition from some other object, eg. a static library.
3675
3676 Update: As of August 2004, we support a new convention. Function
3677 calls may use the function descriptor symbol, ie. "bl foo". This
3678 behaves exactly as "bl .foo". */
65f38f15 3679
1d483afe 3680/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3681 selects those that must be copied when linking a shared library,
3682 even when the symbol is local. */
65f38f15 3683
1d483afe
AM		 3684static int
3685must_be_dyn_reloc (struct bfd_link_info *info,
3686 enum elf_ppc64_reloc_type r_type)
3687{
3688 switch (r_type)
3689 {
3690 default:
3691 return 1;
3692
3693 case R_PPC64_REL32:
3694 case R_PPC64_REL64:
3695 case R_PPC64_REL30:
3696 return 0;
3697
3698 case R_PPC64_TPREL16:
3699 case R_PPC64_TPREL16_LO:
3700 case R_PPC64_TPREL16_HI:
3701 case R_PPC64_TPREL16_HA:
3702 case R_PPC64_TPREL16_DS:
3703 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 3704 case R_PPC64_TPREL16_HIGH:
3705 case R_PPC64_TPREL16_HIGHA:
1d483afe
AM		 3706 case R_PPC64_TPREL16_HIGHER:
3707 case R_PPC64_TPREL16_HIGHERA:
3708 case R_PPC64_TPREL16_HIGHEST:
3709 case R_PPC64_TPREL16_HIGHESTA:
3710 case R_PPC64_TPREL64:
3711 return !info->executable;
3712 }
3713}
65f38f15 3714
f4656909
AM		 3715/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3716 copying dynamic variables from a shared lib into an app's dynbss
3717 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3718 shared lib. With code that gcc generates, it's vital that this be
3719 enabled; In the PowerPC64 ABI, the address of a function is actually
3720 the address of a function descriptor, which resides in the .opd
3721 section. gcc uses the descriptor directly rather than going via the
3722 GOT as some other ABI's do, which means that initialized function
3723 pointers must reference the descriptor. Thus, a function pointer
3724 initialized to the address of a function in a shared library will
3725 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3726 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3727 presents a problem as a plt entry for that function is also
3728 initialized from the function descriptor symbol and the copy reloc
3729 may not be initialized first. */
a23b6845 3730#define ELIMINATE_COPY_RELOCS 1
f4656909 3731
721956f4 3732/* Section name for stubs is the associated section name plus this
29942be8
NC		 3733 string. */
3734#define STUB_SUFFIX ".stub"
721956f4
AM		 3735
3736/* Linker stubs.
3737 ppc_stub_long_branch:
3738 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3739 destination, but a 24 bit branch in a stub section will reach.
3740 . b dest
3741
3742 ppc_stub_plt_branch:
3743 Similar to the above, but a 24 bit branch in the stub section won't
3744 reach its destination.
71a39c98
AM		 3745 . addis %r11,%r2,xxx@toc@ha
3746 . ld %r12,xxx@toc@l(%r11)
3747 . mtctr %r12
721956f4
AM		 3748 . bctr
3749
3750 ppc_stub_plt_call:
2c66dc6c
AM		 3751 Used to call a function in a shared library. If it so happens that
3752 the plt entry referenced crosses a 64k boundary, then an extra
71a39c98 3753 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
721956f4 3754 . std %r2,40(%r1)
71a39c98
AM		 3755 . addis %r11,%r2,xxx@toc@ha
3756 . ld %r12,xxx+0@toc@l(%r11)
3757 . mtctr %r12
3758 . ld %r2,xxx+8@toc@l(%r11)
3759 . ld %r11,xxx+16@toc@l(%r11)
721956f4 3760 . bctr
ad8e1ba5
AM		 3761
3762 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3763 code to adjust the value and save r2 to support multiple toc sections.
3764 A ppc_stub_long_branch with an r2 offset looks like:
3765 . std %r2,40(%r1)
3766 . addis %r2,%r2,off@ha
3767 . addi %r2,%r2,off@l
3768 . b dest
3769
3770 A ppc_stub_plt_branch with an r2 offset looks like:
3771 . std %r2,40(%r1)
71a39c98
AM		 3772 . addis %r11,%r2,xxx@toc@ha
3773 . ld %r12,xxx@toc@l(%r11)
ad8e1ba5
AM		 3774 . addis %r2,%r2,off@ha
3775 . addi %r2,%r2,off@l
71a39c98 3776 . mtctr %r12
ad8e1ba5 3777 . bctr
ac2df442
AM		 3778
3779 In cases where the "addis" instruction would add zero, the "addis" is
3780 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3781*/
3782
3783enum ppc_stub_type {
3784 ppc_stub_none,
3785 ppc_stub_long_branch,
ad8e1ba5 3786 ppc_stub_long_branch_r2off,
721956f4 3787 ppc_stub_plt_branch,
ad8e1ba5 3788 ppc_stub_plt_branch_r2off,
794e51c0 3789 ppc_stub_plt_call,
7341d5e2
AM		 3790 ppc_stub_plt_call_r2save,
3791 ppc_stub_global_entry
721956f4
AM		 3792};
3793
3794struct ppc_stub_hash_entry {
3795
3796 /* Base hash table entry structure. */
3797 struct bfd_hash_entry root;
3798
ad8e1ba5
AM		 3799 enum ppc_stub_type stub_type;
3800
721956f4
AM		 3801 /* The stub section. */
3802 asection *stub_sec;
3803
3804 /* Offset within stub_sec of the beginning of this stub. */
3805 bfd_vma stub_offset;
3806
3807 /* Given the symbol's value and its section we can determine its final
3808 value when building the stubs (so the stub knows where to jump. */
3809 bfd_vma target_value;
3810 asection *target_section;
3811
721956f4
AM		 3812 /* The symbol table entry, if any, that this was derived from. */
3813 struct ppc_link_hash_entry *h;
e054468f 3814 struct plt_entry *plt_ent;
721956f4
AM		 3815
3816 /* Where this stub is being called from, or, in the case of combined
3817 stub sections, the first input section in the group. */
3818 asection *id_sec;
6911b7dc
AM		 3819
3820 /* Symbol st_other. */
3821 unsigned char other;
721956f4
AM		 3822};
3823
3824struct ppc_branch_hash_entry {
3825
3826 /* Base hash table entry structure. */
3827 struct bfd_hash_entry root;
3828
c456f082 3829 /* Offset within branch lookup table. */
721956f4
AM		 3830 unsigned int offset;
3831
3832 /* Generation marker. */
3833 unsigned int iter;
3834};
65f38f15 3835
19e08130
AM		 3836/* Used to track dynamic relocations for local symbols. */
3837struct ppc_dyn_relocs
3838{
3839 struct ppc_dyn_relocs *next;
3840
3841 /* The input section of the reloc. */
3842 asection *sec;
3843
3844 /* Total number of relocs copied for the input section. */
3845 unsigned int count : 31;
3846
3847 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3848 unsigned int ifunc : 1;
3849};
3850
65f38f15
AM		 3851struct ppc_link_hash_entry
3852{
3853 struct elf_link_hash_entry elf;
3854
b3fac117
AM		 3855 union {
3856 /* A pointer to the most recently used stub hash entry against this
3857 symbol. */
3858 struct ppc_stub_hash_entry *stub_cache;
3859
3860 /* A pointer to the next symbol starting with a '.' */
3861 struct ppc_link_hash_entry *next_dot_sym;
3862 } u;
721956f4 3863
65f38f15 3864 /* Track dynamic relocs copied for this symbol. */
6061a67d 3865 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3866
721956f4 3867 /* Link between function code and descriptor symbols. */
34814b9f 3868 struct ppc_link_hash_entry *oh;
721956f4 3869
e86ce104
AM		 3870 /* Flag function code and descriptor symbols. */
3871 unsigned int is_func:1;
3872 unsigned int is_func_descriptor:1;
908b32fc 3873 unsigned int fake:1;
411e1bfb 3874
c5614fa4
AM		 3875 /* Whether global opd/toc sym has been adjusted or not.
3876 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3877 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3878 unsigned int adjust_done:1;
3879
99877b66
AM		 3880 /* Set if we twiddled this symbol to weak at some stage. */
3881 unsigned int was_undefined:1;
3882
411e1bfb 3883 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3884 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3885 corresponding relocs are encountered during check_relocs.
3886 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3887 indicate the corresponding GOT entry type is not needed.
3888 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3889 a TPREL one. We use a separate flag rather than setting TPREL
3890 just for convenience in distinguishing the two cases. */
3891#define TLS_GD 1 /* GD reloc. */
3892#define TLS_LD 2 /* LD reloc. */
3893#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3894#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3895#define TLS_TLS 16 /* Any TLS reloc. */
3896#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3897#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3898#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3899 unsigned char tls_mask;
65f38f15
AM		 3900};
3901
3902/* ppc64 ELF linker hash table. */
3903
3904struct ppc_link_hash_table
3905{
3906 struct elf_link_hash_table elf;
3907
721956f4
AM		 3908 /* The stub hash table. */
3909 struct bfd_hash_table stub_hash_table;
3910
3911 /* Another hash table for plt_branch stubs. */
3912 struct bfd_hash_table branch_hash_table;
3913
3b421ab3
AM		 3914 /* Hash table for function prologue tocsave. */
3915 htab_t tocsave_htab;
3916
e7d1c40c
AM		 3917 /* Various options and other info passed from the linker. */
3918 struct ppc64_elf_params *params;
721956f4
AM		 3919
3920 /* Array to keep track of which stub sections have been created, and
3921 information on stub grouping. */
3922 struct map_stub {
3923 /* This is the section to which stubs in the group will be attached. */
3924 asection *link_sec;
3925 /* The stub section. */
3926 asection *stub_sec;
ad8e1ba5
AM		 3927 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3928 bfd_vma toc_off;
721956f4
AM		 3929 } *stub_group;
3930
ad8e1ba5
AM		 3931 /* Temp used when calculating TOC pointers. */
3932 bfd_vma toc_curr;
bf102f86
AM		 3933 bfd *toc_bfd;
3934 asection *toc_first_sec;
ad8e1ba5 3935
8f3bab57
AM		 3936 /* Highest input section id. */
3937 int top_id;
3938
734b6cf9
AM		 3939 /* Highest output section index. */
3940 int top_index;
3941
b3fac117
AM		 3942 /* Used when adding symbols. */
3943 struct ppc_link_hash_entry *dot_syms;
3944
734b6cf9
AM		 3945 /* List of input sections for each output section. */
3946 asection **input_list;
721956f4 3947
33e44f2e 3948 /* Shortcuts to get to dynamic linker sections. */
4ce794b7
AM		 3949 asection *dynbss;
3950 asection *relbss;
3951 asection *glink;
82bd7b59 3952 asection *sfpr;
4ce794b7
AM		 3953 asection *brlt;
3954 asection *relbrlt;
58d180e8 3955 asection *glink_eh_frame;
ec338859 3956
8387904d
AM		 3957 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3958 struct ppc_link_hash_entry *tls_get_addr;
3959 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3960
927be08e
AM		 3961 /* The size of reliplt used by got entry relocs. */
3962 bfd_size_type got_reli_size;
3963
9b5ecbd0 3964 /* Statistics. */
7341d5e2 3965 unsigned long stub_count[ppc_stub_global_entry];
9b5ecbd0 3966
ee75fd95
AM		 3967 /* Number of stubs against global syms. */
3968 unsigned long stub_globals;
3969
ee67d69a
AM		 3970 /* Set if we're linking code with function descriptors. */
3971 unsigned int opd_abi:1;
3972
4c52953f 3973 /* Support for multiple toc sections. */
33c0ec9d 3974 unsigned int do_multi_toc:1;
4c52953f 3975 unsigned int multi_toc_needed:1;
927be08e 3976 unsigned int second_toc_pass:1;
67f0cbdb 3977 unsigned int do_toc_opt:1;
4c52953f 3978
5d1634d7 3979 /* Set on error. */
99877b66 3980 unsigned int stub_error:1;
721956f4 3981
f6c7c3e8 3982 /* Temp used by ppc64_elf_before_check_relocs. */
99877b66 3983 unsigned int twiddled_syms:1;
721956f4
AM		 3984
3985 /* Incremented every time we size stubs. */
3986 unsigned int stub_iteration;
5d1634d7 3987
87d72d41
AM		 3988 /* Small local sym cache. */
3989 struct sym_cache sym_cache;
65f38f15
AM		 3990};
3991
4c52953f
AM		 3992/* Rename some of the generic section flags to better document how they
3993 are used here. */
b0dddeec
AM		 3994
3995/* Nonzero if this section has TLS related relocations. */
3996#define has_tls_reloc sec_flg0
3997
3998/* Nonzero if this section has a call to __tls_get_addr. */
3999#define has_tls_get_addr_call sec_flg1
4000
4001/* Nonzero if this section has any toc or got relocs. */
4002#define has_toc_reloc sec_flg2
4003
4004/* Nonzero if this section has a call to another section that uses
4005 the toc or got. */
d77c8a4b 4006#define makes_toc_func_call sec_flg3
b0dddeec
AM		 4007
4008/* Recursion protection when determining above flag. */
d77c8a4b 4009#define call_check_in_progress sec_flg4
70cc837d 4010#define call_check_done sec_flg5
4c52953f 4011
65f38f15
AM		 4012/* Get the ppc64 ELF linker hash table from a link_info structure. */
4013
4014#define ppc_hash_table(p) \
4dfe6ac6
NC		 4015 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4016 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 4017
721956f4
AM		 4018#define ppc_stub_hash_lookup(table, string, create, copy) \
4019 ((struct ppc_stub_hash_entry *) \
4020 bfd_hash_lookup ((table), (string), (create), (copy)))
4021
4022#define ppc_branch_hash_lookup(table, string, create, copy) \
4023 ((struct ppc_branch_hash_entry *) \
4024 bfd_hash_lookup ((table), (string), (create), (copy)))
4025
4026/* Create an entry in the stub hash table. */
4027
4028static struct bfd_hash_entry *
4ce794b7
AM		 4029stub_hash_newfunc (struct bfd_hash_entry *entry,
4030 struct bfd_hash_table *table,
4031 const char *string)
721956f4
AM		 4032{
4033 /* Allocate the structure if it has not already been allocated by a
4034 subclass. */
4035 if (entry == NULL)
4036 {
4037 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4038 if (entry == NULL)
4039 return entry;
4040 }
4041
4042 /* Call the allocation method of the superclass. */
4043 entry = bfd_hash_newfunc (entry, table, string);
4044 if (entry != NULL)
4045 {
4046 struct ppc_stub_hash_entry *eh;
4047
4048 /* Initialize the local fields. */
4049 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 4050 eh->stub_type = ppc_stub_none;
721956f4
AM		 4051 eh->stub_sec = NULL;
4052 eh->stub_offset = 0;
4053 eh->target_value = 0;
4054 eh->target_section = NULL;
721956f4 4055 eh->h = NULL;
6911b7dc 4056 eh->plt_ent = NULL;
721956f4 4057 eh->id_sec = NULL;
6911b7dc 4058 eh->other = 0;
721956f4
AM		 4059 }
4060
4061 return entry;
4062}
4063
4064/* Create an entry in the branch hash table. */
4065
4066static struct bfd_hash_entry *
4ce794b7
AM		 4067branch_hash_newfunc (struct bfd_hash_entry *entry,
4068 struct bfd_hash_table *table,
4069 const char *string)
721956f4
AM		 4070{
4071 /* Allocate the structure if it has not already been allocated by a
4072 subclass. */
4073 if (entry == NULL)
4074 {
4075 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4076 if (entry == NULL)
4077 return entry;
4078 }
4079
4080 /* Call the allocation method of the superclass. */
4081 entry = bfd_hash_newfunc (entry, table, string);
4082 if (entry != NULL)
4083 {
4084 struct ppc_branch_hash_entry *eh;
4085
4086 /* Initialize the local fields. */
4087 eh = (struct ppc_branch_hash_entry *) entry;
4088 eh->offset = 0;
4089 eh->iter = 0;
4090 }
4091
4092 return entry;
4093}
4094
65f38f15
AM		 4095/* Create an entry in a ppc64 ELF linker hash table. */
4096
4097static struct bfd_hash_entry *
4ce794b7
AM		 4098link_hash_newfunc (struct bfd_hash_entry *entry,
4099 struct bfd_hash_table *table,
4100 const char *string)
65f38f15
AM		 4101{
4102 /* Allocate the structure if it has not already been allocated by a
4103 subclass. */
4104 if (entry == NULL)
4105 {
4106 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4107 if (entry == NULL)
4108 return entry;
4109 }
4110
4111 /* Call the allocation method of the superclass. */
4112 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4113 if (entry != NULL)
4114 {
4115 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4116
b3fac117 4117 memset (&eh->u.stub_cache, 0,
908b32fc 4118 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 4119 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4120
4121 /* When making function calls, old ABI code references function entry
4122 points (dot symbols), while new ABI code references the function
4123 descriptor symbol. We need to make any combination of reference and
4124 definition work together, without breaking archive linking.
4125
4126 For a defined function "foo" and an undefined call to "bar":
4127 An old object defines "foo" and ".foo", references ".bar" (possibly
4128 "bar" too).
4129 A new object defines "foo" and references "bar".
4130
4131 A new object thus has no problem with its undefined symbols being
4132 satisfied by definitions in an old object. On the other hand, the
4133 old object won't have ".bar" satisfied by a new object.
4134
4135 Keep a list of newly added dot-symbols. */
4136
4137 if (string[0] == '.')
4138 {
4139 struct ppc_link_hash_table *htab;
4140
4141 htab = (struct ppc_link_hash_table *) table;
4142 eh->u.next_dot_sym = htab->dot_syms;
4143 htab->dot_syms = eh;
4144 }
65f38f15
AM		 4145 }
4146
4147 return entry;
4148}
4149
3b421ab3
AM		 4150struct tocsave_entry {
4151 asection *sec;
4152 bfd_vma offset;
4153};
4154
4155static hashval_t
4156tocsave_htab_hash (const void *p)
4157{
4158 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4159 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4160}
4161
4162static int
4163tocsave_htab_eq (const void *p1, const void *p2)
4164{
4165 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4166 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4167 return e1->sec == e2->sec && e1->offset == e2->offset;
4168}
4169
68faa637
AM		 4170/* Destroy a ppc64 ELF linker hash table. */
4171
4172static void
d495ab0d 4173ppc64_elf_link_hash_table_free (bfd *obfd)
68faa637 4174{
d495ab0d 4175 struct ppc_link_hash_table *htab;
68faa637 4176
d495ab0d 4177 htab = (struct ppc_link_hash_table *) obfd->link.hash;
68faa637
AM		 4178 if (htab->tocsave_htab)
4179 htab_delete (htab->tocsave_htab);
d495ab0d
AM		 4180 bfd_hash_table_free (&htab->branch_hash_table);
4181 bfd_hash_table_free (&htab->stub_hash_table);
4182 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 4183}
4184
65f38f15
AM		 4185/* Create a ppc64 ELF linker hash table. */
4186
4187static struct bfd_link_hash_table *
4ce794b7 4188ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 4189{
4190 struct ppc_link_hash_table *htab;
4191 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4192
4ce794b7 4193 htab = bfd_zmalloc (amt);
65f38f15
AM		 4194 if (htab == NULL)
4195 return NULL;
4196
66eb6687 4197 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 4198 sizeof (struct ppc_link_hash_entry),
4199 PPC64_ELF_DATA))
65f38f15 4200 {
e2d34d7d 4201 free (htab);
65f38f15
AM		 4202 return NULL;
4203 }
4204
721956f4 4205 /* Init the stub hash table too. */
66eb6687
AM		 4206 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4207 sizeof (struct ppc_stub_hash_entry)))
2915c55b 4208 {
d495ab0d 4209 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4210 return NULL;
4211 }
721956f4
AM		 4212
4213 /* And the branch hash table. */
66eb6687
AM		 4214 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4215 sizeof (struct ppc_branch_hash_entry)))
2915c55b
JK		 4216 {
4217 bfd_hash_table_free (&htab->stub_hash_table);
d495ab0d 4218 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4219 return NULL;
4220 }
721956f4 4221
3b421ab3
AM		 4222 htab->tocsave_htab = htab_try_create (1024,
4223 tocsave_htab_hash,
4224 tocsave_htab_eq,
4225 NULL);
4226 if (htab->tocsave_htab == NULL)
2915c55b 4227 {
d495ab0d 4228 ppc64_elf_link_hash_table_free (abfd);
2915c55b
JK		 4229 return NULL;
4230 }
d495ab0d 4231 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
3b421ab3 4232
3254fd24
AM		 4233 /* Initializing two fields of the union is just cosmetic. We really
4234 only care about glist, but when compiled on a 32-bit host the
4235 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4236 debugger inspection of these fields look nicer. */
a6aa5195
AM		 4237 htab->elf.init_got_refcount.refcount = 0;
4238 htab->elf.init_got_refcount.glist = NULL;
4239 htab->elf.init_plt_refcount.refcount = 0;
4240 htab->elf.init_plt_refcount.glist = NULL;
4241 htab->elf.init_got_offset.offset = 0;
4242 htab->elf.init_got_offset.glist = NULL;
4243 htab->elf.init_plt_offset.offset = 0;
4244 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4245
65f38f15
AM		 4246 return &htab->elf.root;
4247}
4248
bfeb4a28
AM		 4249/* Create sections for linker generated code. */
4250
4251static bfd_boolean
4252create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4253{
4254 struct ppc_link_hash_table *htab;
4255 flagword flags;
4256
4257 htab = ppc_hash_table (info);
4258
4259 /* Create .sfpr for code to save and restore fp regs. */
4260 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4261 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4262 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4263 flags);
4264 if (htab->sfpr == NULL
4265 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4266 return FALSE;
4267
4268 /* Create .glink for lazy dynamic linking support. */
4269 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4270 flags);
4271 if (htab->glink == NULL
4272 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4273 return FALSE;
4274
4275 if (!info->no_ld_generated_unwind_info)
4276 {
4277 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4278 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4279 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4280 ".eh_frame",
4281 flags);
4282 if (htab->glink_eh_frame == NULL
4283 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4284 return FALSE;
4285 }
4286
4287 flags = SEC_ALLOC | SEC_LINKER_CREATED;
33e44f2e
AM		 4288 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4289 if (htab->elf.iplt == NULL
4290 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
bfeb4a28
AM		 4291 return FALSE;
4292
4293 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4294 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
33e44f2e
AM		 4295 htab->elf.irelplt
4296 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4297 if (htab->elf.irelplt == NULL
4298 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
bfeb4a28
AM		 4299 return FALSE;
4300
4301 /* Create branch lookup table for plt_branch stubs. */
4302 flags = (SEC_ALLOC | SEC_LOAD
4303 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4304 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4305 flags);
4306 if (htab->brlt == NULL
4307 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4308 return FALSE;
4309
4310 if (!info->shared)
4311 return TRUE;
4312
4313 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4314 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4315 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4316 ".rela.branch_lt",
4317 flags);
4318 if (htab->relbrlt == NULL
4319 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4320 return FALSE;
4321
4322 return TRUE;
4323}
4324
e717da7e
AM		 4325/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4326
bfeb4a28 4327bfd_boolean
e7d1c40c
AM		 4328ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4329 struct ppc64_elf_params *params)
e717da7e
AM		 4330{
4331 struct ppc_link_hash_table *htab;
4332
e7d1c40c 4333 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
e717da7e
AM		 4334
4335/* Always hook our dynamic sections into the first bfd, which is the
4336 linker created stub bfd. This ensures that the GOT header is at
4337 the start of the output TOC section. */
4338 htab = ppc_hash_table (info);
4dfe6ac6 4339 if (htab == NULL)
bfeb4a28 4340 return FALSE;
e7d1c40c
AM		 4341 htab->elf.dynobj = params->stub_bfd;
4342 htab->params = params;
bfeb4a28
AM		 4343
4344 if (info->relocatable)
4345 return TRUE;
4346
4347 return create_linkage_sections (htab->elf.dynobj, info);
e717da7e
AM		 4348}
4349
721956f4
AM		 4350/* Build a name for an entry in the stub hash table. */
4351
4352static char *
4ce794b7
AM		 4353ppc_stub_name (const asection *input_section,
4354 const asection *sym_sec,
4355 const struct ppc_link_hash_entry *h,
4356 const Elf_Internal_Rela *rel)
721956f4
AM		 4357{
4358 char *stub_name;
bcaa2f82 4359 ssize_t len;
721956f4
AM		 4360
4361 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4362 offsets from a sym as a branch target? In fact, we could
4363 probably assume the addend is always zero. */
4364 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4365
4366 if (h)
4367 {
4368 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4369 stub_name = bfd_malloc (len);
46de2a7c
AM		 4370 if (stub_name == NULL)
4371 return stub_name;
4372
bcaa2f82
AM		 4373 len = sprintf (stub_name, "%08x.%s+%x",
4374 input_section->id & 0xffffffff,
4375 h->elf.root.root.string,
4376 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 4377 }
4378 else
4379 {
ad8e1ba5 4380 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4381 stub_name = bfd_malloc (len);
46de2a7c
AM		 4382 if (stub_name == NULL)
4383 return stub_name;
4384
bcaa2f82
AM		 4385 len = sprintf (stub_name, "%08x.%x:%x+%x",
4386 input_section->id & 0xffffffff,
4387 sym_sec->id & 0xffffffff,
4388 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4389 (int) rel->r_addend & 0xffffffff);
721956f4 4390 }
bcaa2f82 4391 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
ee75fd95 4392 stub_name[len - 2] = 0;
721956f4
AM		 4393 return stub_name;
4394}
4395
4396/* Look up an entry in the stub hash. Stub entries are cached because
4397 creating the stub name takes a bit of time. */
4398
4399static struct ppc_stub_hash_entry *
4ce794b7
AM		 4400ppc_get_stub_entry (const asection *input_section,
4401 const asection *sym_sec,
039b3fef 4402 struct ppc_link_hash_entry *h,
4ce794b7
AM		 4403 const Elf_Internal_Rela *rel,
4404 struct ppc_link_hash_table *htab)
721956f4
AM		 4405{
4406 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 4407 const asection *id_sec;
4408
4409 /* If this input section is part of a group of sections sharing one
4410 stub section, then use the id of the first section in the group.
4411 Stub names need to include a section id, as there may well be
4412 more than one stub used to reach say, printf, and we need to
4413 distinguish between them. */
4414 id_sec = htab->stub_group[input_section->id].link_sec;
4415
b3fac117
AM		 4416 if (h != NULL && h->u.stub_cache != NULL
4417 && h->u.stub_cache->h == h
4418 && h->u.stub_cache->id_sec == id_sec)
721956f4 4419 {
b3fac117 4420 stub_entry = h->u.stub_cache;
721956f4
AM		 4421 }
4422 else
4423 {
4424 char *stub_name;
4425
4426 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4427 if (stub_name == NULL)
4428 return NULL;
4429
4430 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4431 stub_name, FALSE, FALSE);
721956f4 4432 if (h != NULL)
b3fac117 4433 h->u.stub_cache = stub_entry;
721956f4
AM		 4434
4435 free (stub_name);
4436 }
4437
4438 return stub_entry;
4439}
4440
4441/* Add a new stub entry to the stub hash. Not all fields of the new
4442 stub entry are initialised. */
4443
4444static struct ppc_stub_hash_entry *
4ce794b7
AM		 4445ppc_add_stub (const char *stub_name,
4446 asection *section,
25f53a85 4447 struct bfd_link_info *info)
721956f4 4448{
25f53a85 4449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4
AM		 4450 asection *link_sec;
4451 asection *stub_sec;
4452 struct ppc_stub_hash_entry *stub_entry;
4453
4454 link_sec = htab->stub_group[section->id].link_sec;
4455 stub_sec = htab->stub_group[section->id].stub_sec;
4456 if (stub_sec == NULL)
4457 {
4458 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4459 if (stub_sec == NULL)
4460 {
d4c88bbb 4461 size_t namelen;
721956f4
AM		 4462 bfd_size_type len;
4463 char *s_name;
4464
d4c88bbb
AM		 4465 namelen = strlen (link_sec->name);
4466 len = namelen + sizeof (STUB_SUFFIX);
e7d1c40c 4467 s_name = bfd_alloc (htab->params->stub_bfd, len);
721956f4
AM		 4468 if (s_name == NULL)
4469 return NULL;
4470
d4c88bbb
AM		 4471 memcpy (s_name, link_sec->name, namelen);
4472 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
e7d1c40c 4473 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
721956f4
AM		 4474 if (stub_sec == NULL)
4475 return NULL;
4476 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4477 }
4478 htab->stub_group[section->id].stub_sec = stub_sec;
4479 }
4480
4481 /* Enter this entry into the linker stub hash table. */
4482 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4483 TRUE, FALSE);
721956f4
AM		 4484 if (stub_entry == NULL)
4485 {
8de848d8 4486 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4487 section->owner, stub_name);
721956f4
AM		 4488 return NULL;
4489 }
4490
4491 stub_entry->stub_sec = stub_sec;
4492 stub_entry->stub_offset = 0;
4493 stub_entry->id_sec = link_sec;
4494 return stub_entry;
4495}
4496
e717da7e
AM		 4497/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4498 not already done. */
65f38f15 4499
b34976b6 4500static bfd_boolean
e717da7e 4501create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4502{
e717da7e
AM		 4503 asection *got, *relgot;
4504 flagword flags;
4505 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4506
0c8d6e5c 4507 if (!is_ppc64_elf (abfd))
0ffa91dd 4508 return FALSE;
4dfe6ac6
NC		 4509 if (htab == NULL)
4510 return FALSE;
0ffa91dd 4511
33e44f2e
AM		 4512 if (!htab->elf.sgot
4513 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4514 return FALSE;
e717da7e
AM		 4515
4516 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4517 | SEC_LINKER_CREATED);
4518
c456f082 4519 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4520 if (!got
e717da7e
AM		 4521 || !bfd_set_section_alignment (abfd, got, 3))
4522 return FALSE;
65f38f15 4523
c456f082
AM		 4524 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4525 flags | SEC_READONLY);
e717da7e 4526 if (!relgot
e717da7e 4527 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4528 return FALSE;
e717da7e
AM		 4529
4530 ppc64_elf_tdata (abfd)->got = got;
4531 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4532 return TRUE;
65f38f15 4533}
5bd4f169 4534
82bd7b59 4535/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4536
b34976b6 4537static bfd_boolean
4ce794b7 4538ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4539{
65f38f15 4540 struct ppc_link_hash_table *htab;
5bd4f169 4541
65f38f15 4542 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4543 return FALSE;
65f38f15 4544
e717da7e 4545 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4546 if (htab == NULL)
4547 return FALSE;
4548
3d4d4302 4549 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
65f38f15 4550 if (!info->shared)
3d4d4302 4551 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
65f38f15 4552
33e44f2e 4553 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4ce794b7 4554 || (!info->shared && !htab->relbss))
65f38f15
AM		 4555 abort ();
4556
b34976b6 4557 return TRUE;
5bd4f169
AM		 4558}
4559
b31867b6
AM		 4560/* Follow indirect and warning symbol links. */
4561
4562static inline struct bfd_link_hash_entry *
4563follow_link (struct bfd_link_hash_entry *h)
4564{
4565 while (h->type == bfd_link_hash_indirect
4566 || h->type == bfd_link_hash_warning)
4567 h = h->u.i.link;
4568 return h;
4569}
4570
4571static inline struct elf_link_hash_entry *
4572elf_follow_link (struct elf_link_hash_entry *h)
4573{
4574 return (struct elf_link_hash_entry *) follow_link (&h->root);
4575}
4576
4577static inline struct ppc_link_hash_entry *
4578ppc_follow_link (struct ppc_link_hash_entry *h)
4579{
4580 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4581}
4582
40d16e0b
AM		 4583/* Merge PLT info on FROM with that on TO. */
4584
4585static void
4586move_plt_plist (struct ppc_link_hash_entry *from,
4587 struct ppc_link_hash_entry *to)
4588{
4589 if (from->elf.plt.plist != NULL)
4590 {
4591 if (to->elf.plt.plist != NULL)
4592 {
4593 struct plt_entry **entp;
4594 struct plt_entry *ent;
4595
4596 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4597 {
4598 struct plt_entry *dent;
4599
4600 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4601 if (dent->addend == ent->addend)
4602 {
4603 dent->plt.refcount += ent->plt.refcount;
4604 *entp = ent->next;
4605 break;
4606 }
4607 if (dent == NULL)
4608 entp = &ent->next;
4609 }
4610 *entp = to->elf.plt.plist;
4611 }
4612
4613 to->elf.plt.plist = from->elf.plt.plist;
4614 from->elf.plt.plist = NULL;
4615 }
4616}
4617
65f38f15
AM		 4618/* Copy the extra info we tack onto an elf_link_hash_entry. */
4619
4620static void
fcfa13d2
AM		 4621ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4622 struct elf_link_hash_entry *dir,
4623 struct elf_link_hash_entry *ind)
65f38f15
AM		 4624{
4625 struct ppc_link_hash_entry *edir, *eind;
4626
4627 edir = (struct ppc_link_hash_entry *) dir;
4628 eind = (struct ppc_link_hash_entry *) ind;
4629
c79d6685
AM		 4630 edir->is_func |= eind->is_func;
4631 edir->is_func_descriptor |= eind->is_func_descriptor;
4632 edir->tls_mask |= eind->tls_mask;
4633 if (eind->oh != NULL)
4634 edir->oh = ppc_follow_link (eind->oh);
4635
4636 /* If called to transfer flags for a weakdef during processing
4637 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4638 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4639 if (!(ELIMINATE_COPY_RELOCS
4640 && eind->elf.root.type != bfd_link_hash_indirect
4641 && edir->elf.dynamic_adjusted))
4642 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4643
4644 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4645 edir->elf.ref_regular |= eind->elf.ref_regular;
4646 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4647 edir->elf.needs_plt |= eind->elf.needs_plt;
a345bc8d 4648 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
c79d6685 4649
411e1bfb 4650 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4651 if (eind->dyn_relocs != NULL)
65f38f15 4652 {
bbd7ec4a
AM		 4653 if (edir->dyn_relocs != NULL)
4654 {
6061a67d
AM		 4655 struct elf_dyn_relocs **pp;
4656 struct elf_dyn_relocs *p;
bbd7ec4a 4657
fcfa13d2 4658 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4659 list. Merge any entries against the same section. */
4660 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4661 {
6061a67d 4662 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 4663
4664 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4665 if (q->sec == p->sec)
4666 {
4667 q->pc_count += p->pc_count;
4668 q->count += p->count;
4669 *pp = p->next;
4670 break;
4671 }
4672 if (q == NULL)
4673 pp = &p->next;
4674 }
4675 *pp = edir->dyn_relocs;
4676 }
4677
65f38f15
AM		 4678 edir->dyn_relocs = eind->dyn_relocs;
4679 eind->dyn_relocs = NULL;
4680 }
65f38f15 4681
68ba6d40
AM		 4682 /* If we were called to copy over info for a weak sym, that's all.
4683 You might think dyn_relocs need not be copied over; After all,
4684 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 4685 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM		 4686 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4687 dyn_relocs in read-only sections, and it does so on what is the
4688 DIR sym here. */
4689 if (eind->elf.root.type != bfd_link_hash_indirect)
4690 return;
4691
81848ca0
AM		 4692 /* Copy over got entries that we may have already seen to the
4693 symbol which just became indirect. */
411e1bfb
AM		 4694 if (eind->elf.got.glist != NULL)
4695 {
4696 if (edir->elf.got.glist != NULL)
4697 {
4698 struct got_entry **entp;
4699 struct got_entry *ent;
4700
4701 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4702 {
4703 struct got_entry *dent;
4704
4705 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4706 if (dent->addend == ent->addend
e717da7e 4707 && dent->owner == ent->owner
411e1bfb
AM		 4708 && dent->tls_type == ent->tls_type)
4709 {
4710 dent->got.refcount += ent->got.refcount;
4711 *entp = ent->next;
4712 break;
4713 }
4714 if (dent == NULL)
4715 entp = &ent->next;
4716 }
4717 *entp = edir->elf.got.glist;
4718 }
4719
4720 edir->elf.got.glist = eind->elf.got.glist;
4721 eind->elf.got.glist = NULL;
4722 }
4723
4724 /* And plt entries. */
40d16e0b 4725 move_plt_plist (eind, edir);
411e1bfb 4726
fcfa13d2 4727 if (eind->elf.dynindx != -1)
411e1bfb 4728 {
fcfa13d2
AM		 4729 if (edir->elf.dynindx != -1)
4730 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4731 edir->elf.dynstr_index);
411e1bfb
AM		 4732 edir->elf.dynindx = eind->elf.dynindx;
4733 edir->elf.dynstr_index = eind->elf.dynstr_index;
4734 eind->elf.dynindx = -1;
4735 eind->elf.dynstr_index = 0;
4736 }
411e1bfb
AM		 4737}
4738
8387904d
AM		 4739/* Find the function descriptor hash entry from the given function code
4740 hash entry FH. Link the entries via their OH fields. */
4741
4742static struct ppc_link_hash_entry *
b31867b6 4743lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM		 4744{
4745 struct ppc_link_hash_entry *fdh = fh->oh;
4746
4747 if (fdh == NULL)
4748 {
4749 const char *fd_name = fh->elf.root.root.string + 1;
4750
4751 fdh = (struct ppc_link_hash_entry *)
4752 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM		 4753 if (fdh == NULL)
4754 return fdh;
4755
4756 fdh->is_func_descriptor = 1;
4757 fdh->oh = fh;
4758 fh->is_func = 1;
4759 fh->oh = fdh;
8387904d
AM		 4760 }
4761
b31867b6 4762 return ppc_follow_link (fdh);
8387904d
AM		 4763}
4764
bb700d78
AM		 4765/* Make a fake function descriptor sym for the code sym FH. */
4766
4767static struct ppc_link_hash_entry *
4768make_fdh (struct bfd_link_info *info,
908b32fc 4769 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4770{
4771 bfd *abfd;
4772 asymbol *newsym;
4773 struct bfd_link_hash_entry *bh;
4774 struct ppc_link_hash_entry *fdh;
4775
4776 abfd = fh->elf.root.u.undef.abfd;
4777 newsym = bfd_make_empty_symbol (abfd);
4778 newsym->name = fh->elf.root.root.string + 1;
4779 newsym->section = bfd_und_section_ptr;
4780 newsym->value = 0;
908b32fc 4781 newsym->flags = BSF_WEAK;
bb700d78
AM		 4782
4783 bh = NULL;
4784 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4785 newsym->flags, newsym->section,
4786 newsym->value, NULL, FALSE, FALSE,
4787 &bh))
4788 return NULL;
4789
4790 fdh = (struct ppc_link_hash_entry *) bh;
4791 fdh->elf.non_elf = 0;
908b32fc
AM		 4792 fdh->fake = 1;
4793 fdh->is_func_descriptor = 1;
4794 fdh->oh = fh;
4795 fh->is_func = 1;
4796 fh->oh = fdh;
bb700d78
AM		 4797 return fdh;
4798}
4799
8387904d
AM		 4800/* Fix function descriptor symbols defined in .opd sections to be
4801 function type. */
555cd476
AM		 4802
4803static bfd_boolean
c16153ae 4804ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4805 struct bfd_link_info *info,
555cd476 4806 Elf_Internal_Sym *isym,
6911b7dc 4807 const char **name,
555cd476
AM		 4808 flagword *flags ATTRIBUTE_UNUSED,
4809 asection **sec,
b53dfeb2 4810 bfd_vma *value)
555cd476 4811{
f1885d1e
AM		 4812 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4813 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4814 && (ibfd->flags & DYNAMIC) == 0
4815 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d
NC		 4816 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4817
b53dfeb2 4818 if (*sec != NULL
f1885d1e 4819 && strcmp ((*sec)->name, ".opd") == 0)
b53dfeb2
AM		 4820 {
4821 asection *code_sec;
4822
4823 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4824 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4825 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4826
4827 /* If the symbol is a function defined in .opd, and the function
4828 code is in a discarded group, let it appear to be undefined. */
4829 if (!info->relocatable
4830 && (*sec)->reloc_count != 0
4831 && opd_entry_value (*sec, *value, &code_sec, NULL,
4832 FALSE) != (bfd_vma) -1
4833 && discarded_section (code_sec))
4834 {
4835 *sec = bfd_und_section_ptr;
4836 isym->st_shndx = SHN_UNDEF;
4837 }
4838 }
dbd1e97e
AM		 4839 else if (*sec != NULL
4840 && strcmp ((*sec)->name, ".toc") == 0
4841 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4842 {
4843 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4844 if (htab != NULL)
4845 htab->params->object_in_toc = 1;
4846 }
433817dd 4847
6911b7dc
AM		 4848 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4849 {
4850 if (abiversion (ibfd) == 0)
4851 set_abiversion (ibfd, 2);
4852 else if (abiversion (ibfd) == 1)
4853 {
4854 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4855 " for ABI version 1\n"), name);
4856 bfd_set_error (bfd_error_bad_value);
4857 return FALSE;
4858 }
4859 }
4860
555cd476
AM		 4861 return TRUE;
4862}
4863
6911b7dc
AM		 4864/* Merge non-visibility st_other attributes: local entry point. */
4865
4866static void
4867ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4868 const Elf_Internal_Sym *isym,
4869 bfd_boolean definition,
4870 bfd_boolean dynamic)
4871{
4872 if (definition && !dynamic)
4873 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4874 | ELF_ST_VISIBILITY (h->other));
4875}
4876
8387904d 4877/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4878 inclusion of a new ABI object archive that defines "bar".
4879 NAME is a symbol defined in an archive. Return a symbol in the hash
4880 table that might be satisfied by the archive symbols. */
8387904d
AM		 4881
4882static struct elf_link_hash_entry *
4883ppc64_elf_archive_symbol_lookup (bfd *abfd,
4884 struct bfd_link_info *info,
4885 const char *name)
4886{
4887 struct elf_link_hash_entry *h;
4888 char *dot_name;
4889 size_t len;
4890
4891 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4892 if (h != NULL
4893 /* Don't return this sym if it is a fake function descriptor
4894 created by add_symbol_adjust. */
4895 && !(h->root.type == bfd_link_hash_undefweak
4896 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4897 return h;
4898
4899 if (name[0] == '.')
4900 return h;
4901
4902 len = strlen (name);
4903 dot_name = bfd_alloc (abfd, len + 2);
4904 if (dot_name == NULL)
4905 return (struct elf_link_hash_entry *) 0 - 1;
4906 dot_name[0] = '.';
4907 memcpy (dot_name + 1, name, len + 1);
4908 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4909 bfd_release (abfd, dot_name);
4910 return h;
4911}
4912
4913/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4914 new ABI object defines "bar". Well, at least, undefined dot symbols
4915 are made weak. This stops later archive searches from including an
4916 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4917 prevents the linker complaining about undefined symbols.
4918 We also check and correct mismatched symbol visibility here. The
4919 most restrictive visibility of the function descriptor and the
4920 function entry symbol is used. */
8387904d
AM		 4921
4922static bfd_boolean
b3fac117 4923add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4924{
8387904d
AM		 4925 struct ppc_link_hash_table *htab;
4926 struct ppc_link_hash_entry *fdh;
4927
b3fac117 4928 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4929 return TRUE;
4930
b3fac117
AM		 4931 if (eh->elf.root.type == bfd_link_hash_warning)
4932 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4933
b3fac117
AM		 4934 if (eh->elf.root.root.string[0] != '.')
4935 abort ();
8387904d 4936
b3fac117 4937 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4938 if (htab == NULL)
4939 return FALSE;
4940
b31867b6
AM		 4941 fdh = lookup_fdh (eh, htab);
4942 if (fdh == NULL)
4943 {
4944 if (!info->relocatable
4945 && (eh->elf.root.type == bfd_link_hash_undefined
4946 || eh->elf.root.type == bfd_link_hash_undefweak)
4947 && eh->elf.ref_regular)
4948 {
4949 /* Make an undefweak function descriptor sym, which is enough to
4950 pull in an --as-needed shared lib, but won't cause link
4951 errors. Archives are handled elsewhere. */
4952 fdh = make_fdh (info, eh);
4953 if (fdh == NULL)
4954 return FALSE;
4955 fdh->elf.ref_regular = 1;
4956 }
bb700d78 4957 }
b31867b6 4958 else
8387904d 4959 {
35b0ce59
AM		 4960 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4961 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4962 if (entry_vis < descr_vis)
4963 fdh->elf.other += entry_vis - descr_vis;
4964 else if (entry_vis > descr_vis)
4965 eh->elf.other += descr_vis - entry_vis;
4966
e87d886e
AM		 4967 if ((fdh->elf.root.type == bfd_link_hash_defined
4968 || fdh->elf.root.type == bfd_link_hash_defweak)
4969 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4970 {
4971 eh->elf.root.type = bfd_link_hash_undefweak;
4972 eh->was_undefined = 1;
4973 htab->twiddled_syms = 1;
4974 }
8387904d 4975 }
99877b66 4976
8387904d
AM		 4977 return TRUE;
4978}
4979
f6c7c3e8
AM		 4980/* Set up opd section info and abiversion for IBFD, and process list
4981 of dot-symbols we made in link_hash_newfunc. */
b3fac117 4982
8387904d 4983static bfd_boolean
f6c7c3e8 4984ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 4985{
99877b66 4986 struct ppc_link_hash_table *htab;
b3fac117 4987 struct ppc_link_hash_entry **p, *eh;
459609d6 4988 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
433817dd 4989
459609d6 4990 if (opd != NULL && opd->size != 0)
b3fac117 4991 {
459609d6
AM		 4992 if (abiversion (ibfd) == 0)
4993 set_abiversion (ibfd, 1);
4994 else if (abiversion (ibfd) == 2)
f6c7c3e8 4995 {
459609d6
AM		 4996 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4997 " version %d\n"),
4998 ibfd, abiversion (ibfd));
4999 bfd_set_error (bfd_error_bad_value);
5000 return FALSE;
f6c7c3e8
AM		 5001 }
5002
459609d6
AM		 5003 if ((ibfd->flags & DYNAMIC) == 0
5004 && (opd->flags & SEC_RELOC) != 0
5005 && opd->reloc_count != 0
5006 && !bfd_is_abs_section (opd->output_section))
b3fac117 5007 {
459609d6
AM		 5008 /* Garbage collection needs some extra help with .opd sections.
5009 We don't want to necessarily keep everything referenced by
5010 relocs in .opd, as that would keep all functions. Instead,
5011 if we reference an .opd symbol (a function descriptor), we
5012 want to keep the function code symbol's section. This is
5013 easy for global symbols, but for local syms we need to keep
5014 information about the associated function section. */
5015 bfd_size_type amt;
5016 asection **opd_sym_map;
5017
51aecdc5 5018 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
459609d6
AM		 5019 opd_sym_map = bfd_zalloc (ibfd, amt);
5020 if (opd_sym_map == NULL)
b3fac117 5021 return FALSE;
459609d6
AM		 5022 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5023 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5024 ppc64_elf_section_data (opd)->sec_type = sec_opd;
b3fac117
AM		 5025 }
5026 }
5027
459609d6
AM		 5028 if (!is_ppc64_elf (info->output_bfd))
5029 return TRUE;
5030 htab = ppc_hash_table (info);
5031 if (htab == NULL)
5032 return FALSE;
5033
5034 /* For input files without an explicit abiversion in e_flags
5035 we should have flagged any with symbol st_other bits set
5036 as ELFv1 and above flagged those with .opd as ELFv2.
5037 Set the output abiversion if not yet set, and for any input
5038 still ambiguous, take its abiversion from the output.
5039 Differences in ABI are reported later. */
5040 if (abiversion (info->output_bfd) == 0)
5041 set_abiversion (info->output_bfd, abiversion (ibfd));
5042 else if (abiversion (ibfd) == 0)
5043 set_abiversion (ibfd, abiversion (info->output_bfd));
5044
5045 p = &htab->dot_syms;
5046 while ((eh = *p) != NULL)
5047 {
5048 *p = NULL;
5049 if (&eh->elf == htab->elf.hgot)
5050 ;
5051 else if (htab->elf.hgot == NULL
5052 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5053 htab->elf.hgot = &eh->elf;
5054 else if (!add_symbol_adjust (eh, info))
5055 return FALSE;
5056 p = &eh->u.next_dot_sym;
5057 }
5058
b3fac117
AM		 5059 /* Clear the list for non-ppc64 input files. */
5060 p = &htab->dot_syms;
5061 while ((eh = *p) != NULL)
5062 {
5063 *p = NULL;
5064 p = &eh->u.next_dot_sym;
5065 }
99877b66
AM		 5066
5067 /* We need to fix the undefs list for any syms we have twiddled to
5068 undef_weak. */
5069 if (htab->twiddled_syms)
5070 {
77cfaee6 5071 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5072 htab->twiddled_syms = 0;
5073 }
b3fac117 5074 return TRUE;
8387904d
AM		 5075}
5076
97fed1c9
JJ		 5077/* Undo hash table changes when an --as-needed input file is determined
5078 not to be needed. */
5079
5080static bfd_boolean
e5034e59
AM		 5081ppc64_elf_notice_as_needed (bfd *ibfd,
5082 struct bfd_link_info *info,
5083 enum notice_asneeded_action act)
97fed1c9 5084{
e5034e59
AM		 5085 if (act == notice_not_needed)
5086 {
5087 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5088
e5034e59
AM		 5089 if (htab == NULL)
5090 return FALSE;
4dfe6ac6 5091
e5034e59
AM		 5092 htab->dot_syms = NULL;
5093 }
5094 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5095}
5096
aa374f67
AM		 5097/* If --just-symbols against a final linked binary, then assume we need
5098 toc adjusting stubs when calling functions defined there. */
5099
5100static void
5101ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5102{
5103 if ((sec->flags & SEC_CODE) != 0
5104 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5105 && is_ppc64_elf (sec->owner))
5106 {
2c3f079f
AM		 5107 if (abiversion (sec->owner) >= 2
5108 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5109 sec->has_toc_reloc = 1;
5110 }
5111 _bfd_elf_link_just_syms (sec, info);
5112}
5113
e054468f 5114static struct plt_entry **
4ce794b7
AM		 5115update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5116 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5117{
5118 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5119 struct plt_entry **local_plt;
f961d9dd 5120 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5121
5122 if (local_got_ents == NULL)
5123 {
5124 bfd_size_type size = symtab_hdr->sh_info;
5125
e054468f
AM		 5126 size *= (sizeof (*local_got_ents)
5127 + sizeof (*local_plt)
5128 + sizeof (*local_got_tls_masks));
4ce794b7 5129 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5130 if (local_got_ents == NULL)
e054468f 5131 return NULL;
411e1bfb
AM		 5132 elf_local_got_ents (abfd) = local_got_ents;
5133 }
5134
e054468f 5135 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5136 {
5137 struct got_entry *ent;
5138
5139 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5140 if (ent->addend == r_addend
5141 && ent->owner == abfd
5142 && ent->tls_type == tls_type)
411e1bfb
AM		 5143 break;
5144 if (ent == NULL)
5145 {
5146 bfd_size_type amt = sizeof (*ent);
4ce794b7 5147 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5148 if (ent == NULL)
5149 return FALSE;
5150 ent->next = local_got_ents[r_symndx];
5151 ent->addend = r_addend;
e717da7e 5152 ent->owner = abfd;
411e1bfb 5153 ent->tls_type = tls_type;
927be08e 5154 ent->is_indirect = FALSE;
411e1bfb
AM		 5155 ent->got.refcount = 0;
5156 local_got_ents[r_symndx] = ent;
5157 }
5158 ent->got.refcount += 1;
5159 }
5160
e054468f 5161 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5162 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5163 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5164
5165 return local_plt + r_symndx;
65f38f15
AM		 5166}
5167
411e1bfb 5168static bfd_boolean
e054468f 5169update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5170{
411e1bfb 5171 struct plt_entry *ent;
1e2f5b6e 5172
e054468f 5173 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5174 if (ent->addend == addend)
5175 break;
5176 if (ent == NULL)
1e2f5b6e 5177 {
411e1bfb 5178 bfd_size_type amt = sizeof (*ent);
4ce794b7 5179 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5180 if (ent == NULL)
5181 return FALSE;
e054468f 5182 ent->next = *plist;
411e1bfb
AM		 5183 ent->addend = addend;
5184 ent->plt.refcount = 0;
e054468f 5185 *plist = ent;
1e2f5b6e 5186 }
411e1bfb 5187 ent->plt.refcount += 1;
b34976b6 5188 return TRUE;
1e2f5b6e
AM		 5189}
5190
e054468f
AM		 5191static bfd_boolean
5192is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5193{
5194 return (r_type == R_PPC64_REL24
5195 || r_type == R_PPC64_REL14
5196 || r_type == R_PPC64_REL14_BRTAKEN
5197 || r_type == R_PPC64_REL14_BRNTAKEN
5198 || r_type == R_PPC64_ADDR24
5199 || r_type == R_PPC64_ADDR14
5200 || r_type == R_PPC64_ADDR14_BRTAKEN
5201 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5202}
5203
5bd4f169 5204/* Look through the relocs for a section during the first phase, and
65f38f15 5205 calculate needed space in the global offset table, procedure
5d1634d7 5206 linkage table, and dynamic reloc sections. */
5bd4f169 5207
b34976b6 5208static bfd_boolean
4ce794b7
AM		 5209ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5210 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5211{
65f38f15 5212 struct ppc_link_hash_table *htab;
5bd4f169 5213 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5214 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5215 const Elf_Internal_Rela *rel;
5216 const Elf_Internal_Rela *rel_end;
5bd4f169 5217 asection *sreloc;
1e2f5b6e 5218 asection **opd_sym_map;
3a71aa26 5219 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5220
1049f94e 5221 if (info->relocatable)
b34976b6 5222 return TRUE;
5bd4f169 5223
680a3378
AM		 5224 /* Don't do anything special with non-loaded, non-alloced sections.
5225 In particular, any relocs in such sections should not affect GOT
5226 and PLT reference counting (ie. we don't allow them to create GOT
5227 or PLT entries), there's no possibility or desire to optimize TLS
5228 relocs, and there's not much point in propagating relocs to shared
5229 libs that the dynamic linker won't relocate. */
5230 if ((sec->flags & SEC_ALLOC) == 0)
5231 return TRUE;
5232
0c8d6e5c 5233 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5234
65f38f15 5235 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5236 if (htab == NULL)
5237 return FALSE;
5238
3a71aa26
AM		 5239 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5240 FALSE, FALSE, TRUE);
5241 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5242 FALSE, FALSE, TRUE);
0ffa91dd 5243 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5244 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5245 sreloc = NULL;
1e2f5b6e 5246 opd_sym_map = NULL;
f6c7c3e8
AM		 5247 if (ppc64_elf_section_data (sec) != NULL
5248 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5249 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5250
5251 rel_end = relocs + sec->reloc_count;
5252 for (rel = relocs; rel < rel_end; rel++)
5253 {
5254 unsigned long r_symndx;
5255 struct elf_link_hash_entry *h;
04c9666a 5256 enum elf_ppc64_reloc_type r_type;
727fc41e 5257 int tls_type;
7c8fe5c4 5258 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 5259 struct plt_entry **ifunc;
5bd4f169
AM		 5260
5261 r_symndx = ELF64_R_SYM (rel->r_info);
5262 if (r_symndx < symtab_hdr->sh_info)
5263 h = NULL;
5264 else
973a3492
L		 5265 {
5266 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5267 h = elf_follow_link (h);
81fbe831
AM		 5268
5269 /* PR15323, ref flags aren't set for references in the same
5270 object. */
5271 h->root.non_ir_ref = 1;
1c865ab2
AM		 5272
5273 if (h == htab->elf.hgot)
5274 sec->has_toc_reloc = 1;
973a3492 5275 }
5bd4f169 5276
727fc41e 5277 tls_type = 0;
e054468f 5278 ifunc = NULL;
25f23106
AM		 5279 if (h != NULL)
5280 {
5281 if (h->type == STT_GNU_IFUNC)
5282 {
5283 h->needs_plt = 1;
5284 ifunc = &h->plt.plist;
5285 }
5286 }
5287 else
5288 {
5289 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5290 abfd, r_symndx);
5291 if (isym == NULL)
5292 return FALSE;
5293
5294 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5295 {
5296 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5297 rel->r_addend, PLT_IFUNC);
5298 if (ifunc == NULL)
5299 return FALSE;
5300 }
5301 }
4ce794b7 5302 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM		 5303 if (is_branch_reloc (r_type))
5304 {
5305 if (h != NULL && (h == tga || h == dottga))
5306 {
5307 if (rel != relocs
5308 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5309 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5310 /* We have a new-style __tls_get_addr call with a marker
5311 reloc. */
5312 ;
5313 else
5314 /* Mark this section as having an old-style call. */
5315 sec->has_tls_get_addr_call = 1;
5316 }
727fc41e 5317
e054468f 5318 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM		 5319 if (ifunc != NULL
5320 && !update_plt_info (abfd, ifunc, rel->r_addend))
5321 return FALSE;
5322 }
727fc41e 5323
a33d1f77 5324 switch (r_type)
5bd4f169 5325 {
727fc41e
AM		 5326 case R_PPC64_TLSGD:
5327 case R_PPC64_TLSLD:
5328 /* These special tls relocs tie a call to __tls_get_addr with
5329 its parameter symbol. */
5330 break;
5331
411e1bfb
AM		 5332 case R_PPC64_GOT_TLSLD16:
5333 case R_PPC64_GOT_TLSLD16_LO:
5334 case R_PPC64_GOT_TLSLD16_HI:
5335 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5336 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5337 goto dogottls;
5338
5339 case R_PPC64_GOT_TLSGD16:
5340 case R_PPC64_GOT_TLSGD16_LO:
5341 case R_PPC64_GOT_TLSGD16_HI:
5342 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5343 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5344 goto dogottls;
5345
5346 case R_PPC64_GOT_TPREL16_DS:
5347 case R_PPC64_GOT_TPREL16_LO_DS:
5348 case R_PPC64_GOT_TPREL16_HI:
5349 case R_PPC64_GOT_TPREL16_HA:
afb93314 5350 if (info->shared)
411e1bfb
AM		 5351 info->flags |= DF_STATIC_TLS;
5352 tls_type = TLS_TLS | TLS_TPREL;
5353 goto dogottls;
5354
5355 case R_PPC64_GOT_DTPREL16_DS:
5356 case R_PPC64_GOT_DTPREL16_LO_DS:
5357 case R_PPC64_GOT_DTPREL16_HI:
5358 case R_PPC64_GOT_DTPREL16_HA:
5359 tls_type = TLS_TLS | TLS_DTPREL;
5360 dogottls:
5361 sec->has_tls_reloc = 1;
5362 /* Fall thru */
5363
5bd4f169 5364 case R_PPC64_GOT16:
5bd4f169 5365 case R_PPC64_GOT16_DS:
65f38f15
AM		 5366 case R_PPC64_GOT16_HA:
5367 case R_PPC64_GOT16_HI:
5368 case R_PPC64_GOT16_LO:
5bd4f169 5369 case R_PPC64_GOT16_LO_DS:
65f38f15 5370 /* This symbol requires a global offset table entry. */
4c52953f 5371 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5372 if (r_type == R_PPC64_GOT_TLSLD16
5373 || r_type == R_PPC64_GOT_TLSGD16
5374 || r_type == R_PPC64_GOT_TPREL16_DS
5375 || r_type == R_PPC64_GOT_DTPREL16_DS
5376 || r_type == R_PPC64_GOT16
5377 || r_type == R_PPC64_GOT16_DS)
5378 {
5379 htab->do_multi_toc = 1;
d77c8a4b 5380 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5381 }
5382
e717da7e
AM		 5383 if (ppc64_elf_tdata (abfd)->got == NULL
5384 && !create_got_section (abfd, info))
b34976b6 5385 return FALSE;
5bd4f169
AM		 5386
5387 if (h != NULL)
5388 {
411e1bfb
AM		 5389 struct ppc_link_hash_entry *eh;
5390 struct got_entry *ent;
65f38f15 5391
411e1bfb
AM		 5392 eh = (struct ppc_link_hash_entry *) h;
5393 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5394 if (ent->addend == rel->r_addend
e717da7e 5395 && ent->owner == abfd
411e1bfb
AM		 5396 && ent->tls_type == tls_type)
5397 break;
5398 if (ent == NULL)
5bd4f169 5399 {
411e1bfb 5400 bfd_size_type amt = sizeof (*ent);
4ce794b7 5401 ent = bfd_alloc (abfd, amt);
411e1bfb 5402 if (ent == NULL)
b34976b6 5403 return FALSE;
411e1bfb
AM		 5404 ent->next = eh->elf.got.glist;
5405 ent->addend = rel->r_addend;
e717da7e 5406 ent->owner = abfd;
411e1bfb 5407 ent->tls_type = tls_type;
927be08e 5408 ent->is_indirect = FALSE;
411e1bfb
AM		 5409 ent->got.refcount = 0;
5410 eh->elf.got.glist = ent;
5bd4f169 5411 }
411e1bfb 5412 ent->got.refcount += 1;
e7b938ca 5413 eh->tls_mask |= tls_type;
5bd4f169 5414 }
411e1bfb
AM		 5415 else
5416 /* This is a global offset table entry for a local symbol. */
5417 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5418 rel->r_addend, tls_type))
5419 return FALSE;
a345bc8d
AM		 5420
5421 /* We may also need a plt entry if the symbol turns out to be
5422 an ifunc. */
f6c7c3e8 5423 if (h != NULL && !info->shared && abiversion (abfd) != 1)
a345bc8d
AM		 5424 {
5425 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5426 return FALSE;
5427 }
5bd4f169
AM		 5428 break;
5429
5bd4f169 5430 case R_PPC64_PLT16_HA:
65f38f15
AM		 5431 case R_PPC64_PLT16_HI:
5432 case R_PPC64_PLT16_LO:
5433 case R_PPC64_PLT32:
5434 case R_PPC64_PLT64:
5bd4f169 5435 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 5436 actually build the entry in adjust_dynamic_symbol,
5437 because this might be a case of linking PIC code without
5438 linking in any dynamic objects, in which case we don't
5439 need to generate a procedure linkage table after all. */
5bd4f169
AM		 5440 if (h == NULL)
5441 {
5442 /* It does not make sense to have a procedure linkage
3fad3c7c 5443 table entry for a local symbol. */
5bd4f169 5444 bfd_set_error (bfd_error_bad_value);
b34976b6 5445 return FALSE;
5bd4f169 5446 }
411e1bfb 5447 else
e054468f
AM		 5448 {
5449 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5450 return FALSE;
5451 h->needs_plt = 1;
5452 if (h->root.root.string[0] == '.'
5453 && h->root.root.string[1] != '\0')
5454 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5455 }
5bd4f169
AM		 5456 break;
5457
5458 /* The following relocations don't need to propagate the
5459 relocation if linking a shared object since they are
5460 section relative. */
5461 case R_PPC64_SECTOFF:
5462 case R_PPC64_SECTOFF_LO:
5463 case R_PPC64_SECTOFF_HI:
5464 case R_PPC64_SECTOFF_HA:
5465 case R_PPC64_SECTOFF_DS:
5466 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5467 case R_PPC64_DTPREL16:
5468 case R_PPC64_DTPREL16_LO:
5469 case R_PPC64_DTPREL16_HI:
5470 case R_PPC64_DTPREL16_HA:
5471 case R_PPC64_DTPREL16_DS:
5472 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5473 case R_PPC64_DTPREL16_HIGH:
5474 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5475 case R_PPC64_DTPREL16_HIGHER:
5476 case R_PPC64_DTPREL16_HIGHERA:
5477 case R_PPC64_DTPREL16_HIGHEST:
5478 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5479 break;
5480
ad8e1ba5 5481 /* Nor do these. */
25f23106
AM		 5482 case R_PPC64_REL16:
5483 case R_PPC64_REL16_LO:
5484 case R_PPC64_REL16_HI:
5485 case R_PPC64_REL16_HA:
5486 break;
5487
45965137
AM		 5488 /* Not supported as a dynamic relocation. */
5489 case R_PPC64_ADDR64_LOCAL:
5490 if (info->shared)
5491 {
5492 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5493 ppc_howto_init ();
5494 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5495 "in shared libraries and PIEs.\n"),
5496 abfd, sec, rel->r_offset,
5497 ppc64_elf_howto_table[r_type]->name);
5498 bfd_set_error (bfd_error_bad_value);
5499 return FALSE;
5500 }
5501 break;
5502
ad8e1ba5 5503 case R_PPC64_TOC16:
33c0ec9d
AM		 5504 case R_PPC64_TOC16_DS:
5505 htab->do_multi_toc = 1;
d77c8a4b 5506 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM		 5507 case R_PPC64_TOC16_LO:
5508 case R_PPC64_TOC16_HI:
5509 case R_PPC64_TOC16_HA:
ad8e1ba5 5510 case R_PPC64_TOC16_LO_DS:
4c52953f 5511 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5512 break;
5513
5bd4f169
AM		 5514 /* This relocation describes the C++ object vtable hierarchy.
5515 Reconstruct it for later use during GC. */
5516 case R_PPC64_GNU_VTINHERIT:
c152c796 5517 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5518 return FALSE;
5bd4f169
AM		 5519 break;
5520
5521 /* This relocation describes which C++ vtable entries are actually
5522 used. Record for later use during GC. */
5523 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5524 BFD_ASSERT (h != NULL);
5525 if (h != NULL
5526 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5527 return FALSE;
5bd4f169
AM		 5528 break;
5529
721956f4
AM		 5530 case R_PPC64_REL14:
5531 case R_PPC64_REL14_BRTAKEN:
5532 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5533 {
5534 asection *dest = NULL;
5535
5536 /* Heuristic: If jumping outside our section, chances are
5537 we are going to need a stub. */
5538 if (h != NULL)
5539 {
5540 /* If the sym is weak it may be overridden later, so
5541 don't assume we know where a weak sym lives. */
5542 if (h->root.type == bfd_link_hash_defined)
5543 dest = h->root.u.def.section;
5544 }
5545 else
87d72d41
AM		 5546 {
5547 Elf_Internal_Sym *isym;
5548
5549 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5550 abfd, r_symndx);
5551 if (isym == NULL)
5552 return FALSE;
5553
5554 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5555 }
5556
220c76dd 5557 if (dest != sec)
7c8fe5c4 5558 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5559 }
721956f4
AM		 5560 /* Fall through. */
5561
5d1634d7 5562 case R_PPC64_REL24:
e054468f 5563 if (h != NULL && ifunc == NULL)
5d1634d7
AM		 5564 {
5565 /* We may need a .plt entry if the function this reloc
5566 refers to is in a shared lib. */
e054468f 5567 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5568 return FALSE;
e054468f
AM		 5569 h->needs_plt = 1;
5570 if (h->root.root.string[0] == '.'
5571 && h->root.root.string[1] != '\0')
5572 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5573 if (h == tga || h == dottga)
411e1bfb 5574 sec->has_tls_reloc = 1;
411e1bfb
AM		 5575 }
5576 break;
5577
5578 case R_PPC64_TPREL64:
5579 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
afb93314 5580 if (info->shared)
411e1bfb
AM		 5581 info->flags |= DF_STATIC_TLS;
5582 goto dotlstoc;
5583
5584 case R_PPC64_DTPMOD64:
5585 if (rel + 1 < rel_end
5586 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5587 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5588 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5589 else
951fd09b 5590 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5591 goto dotlstoc;
5592
5593 case R_PPC64_DTPREL64:
5594 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5595 if (rel != relocs
5596 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5597 && rel[-1].r_offset == rel->r_offset - 8)
5598 /* This is the second reloc of a dtpmod, dtprel pair.
5599 Don't mark with TLS_DTPREL. */
5600 goto dodyn;
5601
5602 dotlstoc:
5603 sec->has_tls_reloc = 1;
5604 if (h != NULL)
5605 {
5606 struct ppc_link_hash_entry *eh;
5607 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5608 eh->tls_mask |= tls_type;
411e1bfb
AM		 5609 }
5610 else
5611 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5612 rel->r_addend, tls_type))
5613 return FALSE;
5614
7c8fe5c4
AM		 5615 ppc64_sec = ppc64_elf_section_data (sec);
5616 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5617 {
3a71aa26
AM		 5618 bfd_size_type amt;
5619
e7b938ca 5620 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5621 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5622 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5623 if (ppc64_sec->u.toc.symndx == NULL)
5624 return FALSE;
5625 amt = sec->size * sizeof (bfd_vma) / 8;
5626 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5627 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5628 return FALSE;
7c8fe5c4
AM		 5629 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5630 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5631 }
5632 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5633 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5634 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5635
5636 /* Mark the second slot of a GD or LD entry.
5637 -1 to indicate GD and -2 to indicate LD. */
5638 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5639 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5640 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5641 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5642 goto dodyn;
5643
5644 case R_PPC64_TPREL16:
5645 case R_PPC64_TPREL16_LO:
5646 case R_PPC64_TPREL16_HI:
5647 case R_PPC64_TPREL16_HA:
5648 case R_PPC64_TPREL16_DS:
5649 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5650 case R_PPC64_TPREL16_HIGH:
5651 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5652 case R_PPC64_TPREL16_HIGHER:
5653 case R_PPC64_TPREL16_HIGHERA:
5654 case R_PPC64_TPREL16_HIGHEST:
5655 case R_PPC64_TPREL16_HIGHESTA:
5656 if (info->shared)
5657 {
afb93314 5658 info->flags |= DF_STATIC_TLS;
411e1bfb 5659 goto dodyn;
5d1634d7
AM		 5660 }
5661 break;
5662
e86ce104 5663 case R_PPC64_ADDR64:
1e2f5b6e 5664 if (opd_sym_map != NULL
1e2f5b6e 5665 && rel + 1 < rel_end
4ce794b7 5666 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5667 {
8387904d
AM		 5668 if (h != NULL)
5669 {
5670 if (h->root.root.string[0] == '.'
5671 && h->root.root.string[1] != 0
b31867b6 5672 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5673 ;
5674 else
5675 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5676 }
5677 else
5678 {
5679 asection *s;
87d72d41 5680 Elf_Internal_Sym *isym;
1e2f5b6e 5681
87d72d41
AM		 5682 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5683 abfd, r_symndx);
5684 if (isym == NULL)
8387904d 5685 return FALSE;
87d72d41
AM		 5686
5687 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5688 if (s != NULL && s != sec)
51aecdc5 5689 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
8387904d 5690 }
1e2f5b6e 5691 }
e86ce104
AM		 5692 /* Fall through. */
5693
65f38f15
AM		 5694 case R_PPC64_ADDR16:
5695 case R_PPC64_ADDR16_DS:
5696 case R_PPC64_ADDR16_HA:
5697 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5698 case R_PPC64_ADDR16_HIGH:
5699 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5700 case R_PPC64_ADDR16_HIGHER:
5701 case R_PPC64_ADDR16_HIGHERA:
5702 case R_PPC64_ADDR16_HIGHEST:
5703 case R_PPC64_ADDR16_HIGHESTA:
5704 case R_PPC64_ADDR16_LO:
5705 case R_PPC64_ADDR16_LO_DS:
f6c7c3e8 5706 if (h != NULL && !info->shared && abiversion (abfd) != 1
a345bc8d
AM		 5707 && rel->r_addend == 0)
5708 {
5709 /* We may need a .plt entry if this reloc refers to a
5710 function in a shared lib. */
5711 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5712 return FALSE;
5713 h->pointer_equality_needed = 1;
5714 }
5715 /* Fall through. */
5716
5717 case R_PPC64_REL30:
5718 case R_PPC64_REL32:
5719 case R_PPC64_REL64:
5720 case R_PPC64_ADDR14:
5721 case R_PPC64_ADDR14_BRNTAKEN:
5722 case R_PPC64_ADDR14_BRTAKEN:
65f38f15 5723 case R_PPC64_ADDR24:
65f38f15 5724 case R_PPC64_ADDR32:
65f38f15
AM		 5725 case R_PPC64_UADDR16:
5726 case R_PPC64_UADDR32:
5727 case R_PPC64_UADDR64:
5bd4f169 5728 case R_PPC64_TOC:
81848ca0
AM		 5729 if (h != NULL && !info->shared)
5730 /* We may need a copy reloc. */
f5385ebf 5731 h->non_got_ref = 1;
81848ca0 5732
41bd81ab 5733 /* Don't propagate .opd relocs. */
1e2f5b6e 5734 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5735 break;
e86ce104 5736
65f38f15
AM		 5737 /* If we are creating a shared library, and this is a reloc
5738 against a global symbol, or a non PC relative reloc
5739 against a local symbol, then we need to copy the reloc
5740 into the shared library. However, if we are linking with
5741 -Bsymbolic, we do not need to copy a reloc against a
5742 global symbol which is defined in an object we are
5743 including in the link (i.e., DEF_REGULAR is set). At
5744 this point we have not seen all the input files, so it is
5745 possible that DEF_REGULAR is not set now but will be set
5746 later (it is never cleared). In case of a weak definition,
5747 DEF_REGULAR may be cleared later by a strong definition in
5748 a shared library. We account for that possibility below by
f4656909 5749 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5750 table entry. A similar situation occurs when creating
5751 shared libraries and symbol visibility changes render the
5752 symbol local.
5753
5754 If on the other hand, we are creating an executable, we
5755 may need to keep relocations for symbols satisfied by a
5756 dynamic library if we manage to avoid copy relocs for the
5757 symbol. */
411e1bfb 5758 dodyn:
65f38f15 5759 if ((info->shared
1d483afe 5760 && (must_be_dyn_reloc (info, r_type)
65f38f15 5761 || (h != NULL
198f1157 5762 && (!SYMBOLIC_BIND (info, h)
65f38f15 5763 || h->root.type == bfd_link_hash_defweak
f5385ebf 5764 || !h->def_regular))))
f4656909
AM		 5765 || (ELIMINATE_COPY_RELOCS
5766 && !info->shared
65f38f15
AM		 5767 && h != NULL
5768 && (h->root.type == bfd_link_hash_defweak
25f23106
AM		 5769 || !h->def_regular))
5770 || (!info->shared
5771 && ifunc != NULL))
5bd4f169 5772 {
65f38f15
AM		 5773 /* We must copy these reloc types into the output file.
5774 Create a reloc section in dynobj and make room for
5775 this reloc. */
5bd4f169
AM		 5776 if (sreloc == NULL)
5777 {
83bac4b0
NC		 5778 sreloc = _bfd_elf_make_dynamic_reloc_section
5779 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5780
5bd4f169 5781 if (sreloc == NULL)
83bac4b0 5782 return FALSE;
5bd4f169
AM		 5783 }
5784
65f38f15
AM		 5785 /* If this is a global symbol, we count the number of
5786 relocations we need for this symbol. */
5787 if (h != NULL)
5788 {
19e08130
AM		 5789 struct elf_dyn_relocs *p;
5790 struct elf_dyn_relocs **head;
5791
ec338859 5792 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5793 p = *head;
5794 if (p == NULL || p->sec != sec)
5795 {
5796 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5797 if (p == NULL)
5798 return FALSE;
5799 p->next = *head;
5800 *head = p;
5801 p->sec = sec;
5802 p->count = 0;
5803 p->pc_count = 0;
5804 }
5805 p->count += 1;
5806 if (!must_be_dyn_reloc (info, r_type))
5807 p->pc_count += 1;
65f38f15
AM		 5808 }
5809 else
5810 {
ec338859
AM		 5811 /* Track dynamic relocs needed for local syms too.
5812 We really need local syms available to do this
5813 easily. Oh well. */
19e08130
AM		 5814 struct ppc_dyn_relocs *p;
5815 struct ppc_dyn_relocs **head;
5816 bfd_boolean is_ifunc;
ec338859 5817 asection *s;
6edfbbad 5818 void *vpp;
87d72d41 5819 Elf_Internal_Sym *isym;
6edfbbad 5820
87d72d41
AM		 5821 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5822 abfd, r_symndx);
5823 if (isym == NULL)
b34976b6 5824 return FALSE;
ec338859 5825
87d72d41
AM		 5826 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5827 if (s == NULL)
5828 s = sec;
5829
6edfbbad 5830 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5831 head = (struct ppc_dyn_relocs **) vpp;
5832 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5833 p = *head;
5834 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5835 p = p->next;
5836 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5837 {
5838 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5839 if (p == NULL)
5840 return FALSE;
5841 p->next = *head;
5842 *head = p;
5843 p->sec = sec;
5844 p->ifunc = is_ifunc;
5845 p->count = 0;
5846 }
5847 p->count += 1;
ec338859 5848 }
65f38f15 5849 }
5bd4f169 5850 break;
65f38f15
AM		 5851
5852 default:
96e0dda4 5853 break;
5bd4f169
AM		 5854 }
5855 }
5856
b34976b6 5857 return TRUE;
5bd4f169
AM		 5858}
5859
ee67d69a
AM		 5860/* Merge backend specific data from an object file to the output
5861 object file when linking. */
5862
5863static bfd_boolean
5864ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5865{
5866 unsigned long iflags, oflags;
5867
5868 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5869 return TRUE;
5870
5871 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5872 return TRUE;
5873
5874 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5875 return FALSE;
5876
5877 iflags = elf_elfheader (ibfd)->e_flags;
5878 oflags = elf_elfheader (obfd)->e_flags;
5879
f6c7c3e8 5880 if (iflags & ~EF_PPC64_ABI)
ee67d69a
AM		 5881 {
5882 (*_bfd_error_handler)
5883 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5884 bfd_set_error (bfd_error_bad_value);
5885 return FALSE;
5886 }
f6c7c3e8 5887 else if (iflags != oflags && iflags != 0)
ee67d69a
AM		 5888 {
5889 (*_bfd_error_handler)
5890 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5891 ibfd, iflags, oflags);
5892 bfd_set_error (bfd_error_bad_value);
5893 return FALSE;
5894 }
5895
5896 /* Merge Tag_compatibility attributes and any common GNU ones. */
5897 _bfd_elf_merge_object_attributes (ibfd, obfd);
5898
5899 return TRUE;
5900}
5901
5902static bfd_boolean
5903ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5904{
5905 /* Print normal ELF private data. */
5906 _bfd_elf_print_private_bfd_data (abfd, ptr);
5907
5908 if (elf_elfheader (abfd)->e_flags != 0)
5909 {
5910 FILE *file = ptr;
5911
5912 /* xgettext:c-format */
5913 fprintf (file, _("private flags = 0x%lx:"),
5914 elf_elfheader (abfd)->e_flags);
5915
5916 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5917 fprintf (file, _(" [abiv%ld]"),
5918 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5919 fputc ('\n', file);
5920 }
5921
5922 return TRUE;
5923}
5924
8387904d 5925/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
b53dfeb2
AM		 5926 of the code entry point, and its section, which must be in the same
5927 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
8387904d
AM		 5928
5929static bfd_vma
5930opd_entry_value (asection *opd_sec,
5931 bfd_vma offset,
5932 asection **code_sec,
aef36ac1
AM		 5933 bfd_vma *code_off,
5934 bfd_boolean in_code_sec)
8387904d
AM		 5935{
5936 bfd *opd_bfd = opd_sec->owner;
8860955f 5937 Elf_Internal_Rela *relocs;
8387904d 5938 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5939 bfd_vma val;
8387904d 5940
9f296da3
AM		 5941 /* No relocs implies we are linking a --just-symbols object, or looking
5942 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 5943 if (opd_sec->reloc_count == 0)
5944 {
729eabd5 5945 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 5946
729eabd5
AM		 5947 if (contents == NULL)
5948 {
5949 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5950 return (bfd_vma) -1;
5951 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5952 }
ee1e4ede 5953
729eabd5 5954 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 5955 if (code_sec != NULL)
5956 {
5957 asection *sec, *likely = NULL;
ee1e4ede 5958
aef36ac1 5959 if (in_code_sec)
4b85d634 5960 {
aef36ac1
AM		 5961 sec = *code_sec;
5962 if (sec->vma <= val
5963 && val < sec->vma + sec->size)
5964 likely = sec;
5965 else
5966 val = -1;
5967 }
5968 else
5969 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5970 if (sec->vma <= val
5971 && (sec->flags & SEC_LOAD) != 0
5972 && (sec->flags & SEC_ALLOC) != 0)
5973 likely = sec;
5974 if (likely != NULL)
5975 {
5976 *code_sec = likely;
5977 if (code_off != NULL)
5978 *code_off = val - likely->vma;
4b85d634
AM		 5979 }
5980 }
aef36ac1 5981 return val;
4b85d634
AM		 5982 }
5983
0c8d6e5c 5984 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5985
729eabd5 5986 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 5987 if (relocs == NULL)
5988 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
877a8638
NC		 5989 /* PR 17512: file: df8e1fd6. */
5990 if (relocs == NULL)
5991 return (bfd_vma) -1;
645ea6a9 5992
8387904d 5993 /* Go find the opd reloc at the sym address. */
8860955f 5994 lo = relocs;
8387904d
AM		 5995 BFD_ASSERT (lo != NULL);
5996 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5997 val = (bfd_vma) -1;
8387904d
AM		 5998 while (lo < hi)
5999 {
6000 look = lo + (hi - lo) / 2;
6001 if (look->r_offset < offset)
6002 lo = look + 1;
6003 else if (look->r_offset > offset)
6004 hi = look;
6005 else
6006 {
0ffa91dd
NC		 6007 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6008
8387904d
AM		 6009 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6010 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6011 {
6012 unsigned long symndx = ELF64_R_SYM (look->r_info);
b53dfeb2 6013 asection *sec = NULL;
8387904d 6014
b53dfeb2
AM		 6015 if (symndx >= symtab_hdr->sh_info
6016 && elf_sym_hashes (opd_bfd) != NULL)
8387904d
AM		 6017 {
6018 struct elf_link_hash_entry **sym_hashes;
6019 struct elf_link_hash_entry *rh;
6020
6021 sym_hashes = elf_sym_hashes (opd_bfd);
6022 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6023 if (rh != NULL)
6024 {
6025 rh = elf_follow_link (rh);
6026 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6027 || rh->root.type == bfd_link_hash_defweak);
6028 val = rh->root.u.def.value;
6029 sec = rh->root.u.def.section;
b53dfeb2
AM		 6030 if (sec->owner != opd_bfd)
6031 {
6032 sec = NULL;
6033 val = (bfd_vma) -1;
6034 }
6035 }
6036 }
6037
6038 if (sec == NULL)
6039 {
6040 Elf_Internal_Sym *sym;
6041
6042 if (symndx < symtab_hdr->sh_info)
6043 {
6044 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6045 if (sym == NULL)
6046 {
6047 size_t symcnt = symtab_hdr->sh_info;
6048 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6049 symcnt, 0,
6050 NULL, NULL, NULL);
6051 if (sym == NULL)
6052 break;
6053 symtab_hdr->contents = (bfd_byte *) sym;
6054 }
6055 sym += symndx;
128205bb
AM		 6056 }
6057 else
6058 {
b53dfeb2
AM		 6059 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6060 1, symndx,
6061 NULL, NULL, NULL);
128205bb
AM		 6062 if (sym == NULL)
6063 break;
128205bb 6064 }
b53dfeb2
AM		 6065 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6066 if (sec == NULL)
6067 break;
6068 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6069 val = sym->st_value;
8387904d 6070 }
b53dfeb2 6071
8387904d
AM		 6072 val += look->r_addend;
6073 if (code_off != NULL)
6074 *code_off = val;
6075 if (code_sec != NULL)
aef36ac1
AM		 6076 {
6077 if (in_code_sec && *code_sec != sec)
6078 return -1;
6079 else
6080 *code_sec = sec;
6081 }
b53dfeb2 6082 if (sec->output_section != NULL)
8387904d 6083 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6084 }
6085 break;
6086 }
6087 }
645ea6a9 6088
645ea6a9 6089 return val;
8387904d
AM		 6090}
6091
aef36ac1
AM		 6092/* If the ELF symbol SYM might be a function in SEC, return the
6093 function size and set *CODE_OFF to the function's entry point,
6094 otherwise return zero. */
9f296da3 6095
aef36ac1
AM		 6096static bfd_size_type
6097ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6098 bfd_vma *code_off)
9f296da3 6099{
aef36ac1
AM		 6100 bfd_size_type size;
6101
6102 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6103 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6104 return 0;
6105
6106 size = 0;
6107 if (!(sym->flags & BSF_SYNTHETIC))
6108 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6109
6110 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6111 {
aef36ac1
AM		 6112 if (opd_entry_value (sym->section, sym->value,
6113 &sec, code_off, TRUE) == (bfd_vma) -1)
6114 return 0;
6115 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6116 symbol. This size has nothing to do with the code size of the
6117 function, which is what we're supposed to return, but the
6118 code size isn't available without looking up the dot-sym.
6119 However, doing that would be a waste of time particularly
6120 since elf_find_function will look at the dot-sym anyway.
6121 Now, elf_find_function will keep the largest size of any
6122 function sym found at the code address of interest, so return
6123 1 here to avoid it incorrectly caching a larger function size
6124 for a small function. This does mean we return the wrong
6125 size for a new-ABI function of size 24, but all that does is
6126 disable caching for such functions. */
6127 if (size == 24)
6128 size = 1;
9f296da3 6129 }
aef36ac1
AM		 6130 else
6131 {
6132 if (sym->section != sec)
6133 return 0;
6134 *code_off = sym->value;
6135 }
6136 if (size == 0)
6137 size = 1;
6138 return size;
9f296da3
AM		 6139}
6140
854b41e7
AM		 6141/* Return true if symbol is defined in a regular object file. */
6142
6143static bfd_boolean
6144is_static_defined (struct elf_link_hash_entry *h)
6145{
6146 return ((h->root.type == bfd_link_hash_defined
6147 || h->root.type == bfd_link_hash_defweak)
6148 && h->root.u.def.section != NULL
6149 && h->root.u.def.section->output_section != NULL);
6150}
6151
b31867b6
AM		 6152/* If FDH is a function descriptor symbol, return the associated code
6153 entry symbol if it is defined. Return NULL otherwise. */
6154
6155static struct ppc_link_hash_entry *
6156defined_code_entry (struct ppc_link_hash_entry *fdh)
6157{
6158 if (fdh->is_func_descriptor)
6159 {
6160 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6161 if (fh->elf.root.type == bfd_link_hash_defined
6162 || fh->elf.root.type == bfd_link_hash_defweak)
6163 return fh;
6164 }
6165 return NULL;
6166}
6167
6168/* If FH is a function code entry symbol, return the associated
6169 function descriptor symbol if it is defined. Return NULL otherwise. */
6170
6171static struct ppc_link_hash_entry *
6172defined_func_desc (struct ppc_link_hash_entry *fh)
6173{
6174 if (fh->oh != NULL
6175 && fh->oh->is_func_descriptor)
6176 {
6177 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6178 if (fdh->elf.root.type == bfd_link_hash_defined
6179 || fdh->elf.root.type == bfd_link_hash_defweak)
6180 return fdh;
6181 }
6182 return NULL;
6183}
6184
74f0fb50
AM		 6185/* Mark all our entry sym sections, both opd and code section. */
6186
6187static void
6188ppc64_elf_gc_keep (struct bfd_link_info *info)
6189{
6190 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6191 struct bfd_sym_chain *sym;
6192
4dfe6ac6
NC		 6193 if (htab == NULL)
6194 return;
6195
74f0fb50
AM		 6196 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6197 {
b31867b6 6198 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6199 asection *sec;
6200
6201 eh = (struct ppc_link_hash_entry *)
b31867b6 6202 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6203 if (eh == NULL)
6204 continue;
6205 if (eh->elf.root.type != bfd_link_hash_defined
6206 && eh->elf.root.type != bfd_link_hash_defweak)
6207 continue;
6208
b31867b6
AM		 6209 fh = defined_code_entry (eh);
6210 if (fh != NULL)
74f0fb50 6211 {
b31867b6 6212 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6213 sec->flags |= SEC_KEEP;
6214 }
6215 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6216 && opd_entry_value (eh->elf.root.u.def.section,
6217 eh->elf.root.u.def.value,
aef36ac1 6218 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6219 sec->flags |= SEC_KEEP;
6220
6221 sec = eh->elf.root.u.def.section;
6222 sec->flags |= SEC_KEEP;
6223 }
6224}
6225
64d03ab5
AM		 6226/* Mark sections containing dynamically referenced symbols. When
6227 building shared libraries, we must assume that any visible symbol is
6228 referenced. */
6229
6230static bfd_boolean
6231ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6232{
6233 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6234 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6235 struct ppc_link_hash_entry *fdh;
b407645f 6236 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6237
64d03ab5 6238 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6239 fdh = defined_func_desc (eh);
6240 if (fdh != NULL)
6241 eh = fdh;
64d03ab5
AM		 6242
6243 if ((eh->elf.root.type == bfd_link_hash_defined
6244 || eh->elf.root.type == bfd_link_hash_defweak)
6245 && (eh->elf.ref_dynamic
1c9177d9 6246 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
64d03ab5 6247 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6248 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
b407645f
AM		 6249 && (!info->executable
6250 || info->export_dynamic
6251 || (eh->elf.dynamic
6252 && d != NULL
6253 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6254 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6255 || !bfd_hide_sym_by_version (info->version_info,
6256 eh->elf.root.root.string)))))
64d03ab5
AM		 6257 {
6258 asection *code_sec;
b31867b6 6259 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6260
6261 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6262
6263 /* Function descriptor syms cause the associated
6264 function code sym section to be marked. */
b31867b6
AM		 6265 fh = defined_code_entry (eh);
6266 if (fh != NULL)
6267 {
6268 code_sec = fh->elf.root.u.def.section;
6269 code_sec->flags |= SEC_KEEP;
6270 }
64d03ab5
AM		 6271 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6272 && opd_entry_value (eh->elf.root.u.def.section,
6273 eh->elf.root.u.def.value,
aef36ac1 6274 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6275 code_sec->flags |= SEC_KEEP;
6276 }
6277
6278 return TRUE;
6279}
6280
5bd4f169
AM		 6281/* Return the section that should be marked against GC for a given
6282 relocation. */
6283
6284static asection *
4ce794b7 6285ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6286 struct bfd_link_info *info,
4ce794b7
AM		 6287 Elf_Internal_Rela *rel,
6288 struct elf_link_hash_entry *h,
6289 Elf_Internal_Sym *sym)
5bd4f169 6290{
ccfa59ea
AM		 6291 asection *rsec;
6292
ccfa59ea
AM		 6293 /* Syms return NULL if we're marking .opd, so we avoid marking all
6294 function sections, as all functions are referenced in .opd. */
6295 rsec = NULL;
6296 if (get_opd_info (sec) != NULL)
6297 return rsec;
1e2f5b6e 6298
5bd4f169
AM		 6299 if (h != NULL)
6300 {
04c9666a 6301 enum elf_ppc64_reloc_type r_type;
b31867b6 6302 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6303
4ce794b7 6304 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6305 switch (r_type)
5bd4f169
AM		 6306 {
6307 case R_PPC64_GNU_VTINHERIT:
6308 case R_PPC64_GNU_VTENTRY:
6309 break;
6310
6311 default:
6312 switch (h->root.type)
6313 {
6314 case bfd_link_hash_defined:
6315 case bfd_link_hash_defweak:
ccfa59ea 6316 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6317 fdh = defined_func_desc (eh);
6318 if (fdh != NULL)
6319 eh = fdh;
1e2f5b6e
AM		 6320
6321 /* Function descriptor syms cause the associated
6322 function code sym section to be marked. */
b31867b6
AM		 6323 fh = defined_code_entry (eh);
6324 if (fh != NULL)
ccfa59ea
AM		 6325 {
6326 /* They also mark their opd section. */
74f0fb50 6327 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6328
b31867b6 6329 rsec = fh->elf.root.u.def.section;
ccfa59ea 6330 }
8387904d
AM		 6331 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6332 && opd_entry_value (eh->elf.root.u.def.section,
6333 eh->elf.root.u.def.value,
aef36ac1 6334 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6335 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6336 else
1e2f5b6e
AM		 6337 rsec = h->root.u.def.section;
6338 break;
5bd4f169
AM		 6339
6340 case bfd_link_hash_common:
1e2f5b6e
AM		 6341 rsec = h->root.u.c.p->section;
6342 break;
5bd4f169
AM		 6343
6344 default:
fb34365b 6345 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6346 }
6347 }
6348 }
6349 else
6350 {
74f0fb50 6351 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6352
6353 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6354 opd = get_opd_info (rsec);
6355 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6356 {
74f0fb50 6357 rsec->gc_mark = 1;
ccfa59ea 6358
51aecdc5 6359 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
ccfa59ea 6360 }
5bd4f169
AM		 6361 }
6362
1e2f5b6e 6363 return rsec;
5bd4f169
AM		 6364}
6365
65f38f15
AM		 6366/* Update the .got, .plt. and dynamic reloc reference counts for the
6367 section being removed. */
5bd4f169 6368
b34976b6 6369static bfd_boolean
4ce794b7
AM		 6370ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6371 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6372{
411e1bfb 6373 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6374 Elf_Internal_Shdr *symtab_hdr;
6375 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6376 struct got_entry **local_got_ents;
5bd4f169 6377 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6378
7dda2462
TG		 6379 if (info->relocatable)
6380 return TRUE;
6381
680a3378
AM		 6382 if ((sec->flags & SEC_ALLOC) == 0)
6383 return TRUE;
6384
ec338859
AM		 6385 elf_section_data (sec)->local_dynrel = NULL;
6386
411e1bfb 6387 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6388 if (htab == NULL)
6389 return FALSE;
6390
0ffa91dd 6391 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6392 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6393 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6394
6395 relend = relocs + sec->reloc_count;
6396 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6397 {
6398 unsigned long r_symndx;
04c9666a 6399 enum elf_ppc64_reloc_type r_type;
58ac9f71 6400 struct elf_link_hash_entry *h = NULL;
f961d9dd 6401 unsigned char tls_type = 0;
5bd4f169 6402
a33d1f77 6403 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6404 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6405 if (r_symndx >= symtab_hdr->sh_info)
6406 {
6407 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6408 struct elf_dyn_relocs **pp;
6409 struct elf_dyn_relocs *p;
58ac9f71
AM		 6410
6411 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6412 h = elf_follow_link (h);
58ac9f71
AM		 6413 eh = (struct ppc_link_hash_entry *) h;
6414
6415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6416 if (p->sec == sec)
6417 {
6418 /* Everything must go for SEC. */
6419 *pp = p->next;
6420 break;
6421 }
6422 }
6423
e054468f
AM		 6424 if (is_branch_reloc (r_type))
6425 {
6426 struct plt_entry **ifunc = NULL;
6427 if (h != NULL)
6428 {
6429 if (h->type == STT_GNU_IFUNC)
6430 ifunc = &h->plt.plist;
6431 }
6432 else if (local_got_ents != NULL)
6433 {
6434 struct plt_entry **local_plt = (struct plt_entry **)
6435 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 6436 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM		 6437 (local_plt + symtab_hdr->sh_info);
6438 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6439 ifunc = local_plt + r_symndx;
6440 }
6441 if (ifunc != NULL)
6442 {
6443 struct plt_entry *ent;
6444
6445 for (ent = *ifunc; ent != NULL; ent = ent->next)
6446 if (ent->addend == rel->r_addend)
6447 break;
6448 if (ent == NULL)
6449 abort ();
6450 if (ent->plt.refcount > 0)
6451 ent->plt.refcount -= 1;
6452 continue;
6453 }
6454 }
6455
a33d1f77
AM		 6456 switch (r_type)
6457 {
411e1bfb
AM		 6458 case R_PPC64_GOT_TLSLD16:
6459 case R_PPC64_GOT_TLSLD16_LO:
6460 case R_PPC64_GOT_TLSLD16_HI:
6461 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6462 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6463 goto dogot;
6464
6465 case R_PPC64_GOT_TLSGD16:
6466 case R_PPC64_GOT_TLSGD16_LO:
6467 case R_PPC64_GOT_TLSGD16_HI:
6468 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6469 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6470 goto dogot;
6471
6472 case R_PPC64_GOT_TPREL16_DS:
6473 case R_PPC64_GOT_TPREL16_LO_DS:
6474 case R_PPC64_GOT_TPREL16_HI:
6475 case R_PPC64_GOT_TPREL16_HA:
6476 tls_type = TLS_TLS | TLS_TPREL;
6477 goto dogot;
6478
6479 case R_PPC64_GOT_DTPREL16_DS:
6480 case R_PPC64_GOT_DTPREL16_LO_DS:
6481 case R_PPC64_GOT_DTPREL16_HI:
6482 case R_PPC64_GOT_DTPREL16_HA:
6483 tls_type = TLS_TLS | TLS_DTPREL;
6484 goto dogot;
6485
a33d1f77
AM		 6486 case R_PPC64_GOT16:
6487 case R_PPC64_GOT16_DS:
6488 case R_PPC64_GOT16_HA:
6489 case R_PPC64_GOT16_HI:
6490 case R_PPC64_GOT16_LO:
6491 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6492 dogot:
6493 {
6494 struct got_entry *ent;
6495
58ac9f71
AM		 6496 if (h != NULL)
6497 ent = h->got.glist;
411e1bfb
AM		 6498 else
6499 ent = local_got_ents[r_symndx];
6500
6501 for (; ent != NULL; ent = ent->next)
6502 if (ent->addend == rel->r_addend
e717da7e 6503 && ent->owner == abfd
411e1bfb
AM		 6504 && ent->tls_type == tls_type)
6505 break;
6506 if (ent == NULL)
6507 abort ();
6508 if (ent->got.refcount > 0)
6509 ent->got.refcount -= 1;
6510 }
a33d1f77 6511 break;
65f38f15 6512
a33d1f77
AM		 6513 case R_PPC64_PLT16_HA:
6514 case R_PPC64_PLT16_HI:
6515 case R_PPC64_PLT16_LO:
6516 case R_PPC64_PLT32:
6517 case R_PPC64_PLT64:
721956f4
AM		 6518 case R_PPC64_REL14:
6519 case R_PPC64_REL14_BRNTAKEN:
6520 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6521 case R_PPC64_REL24:
58ac9f71 6522 if (h != NULL)
5d1634d7 6523 {
411e1bfb
AM		 6524 struct plt_entry *ent;
6525
411e1bfb
AM		 6526 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6527 if (ent->addend == rel->r_addend)
6528 break;
7c6c1722 6529 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6530 ent->plt.refcount -= 1;
5d1634d7 6531 }
e86ce104 6532 break;
5d1634d7 6533
a33d1f77
AM		 6534 default:
6535 break;
6536 }
6537 }
b34976b6 6538 return TRUE;
5bd4f169
AM		 6539}
6540
deb0e272
AM		 6541/* The maximum size of .sfpr. */
6542#define SFPR_MAX (218*4)
6543
6544struct sfpr_def_parms
6545{
699733f6
AM		 6546 const char name[12];
6547 unsigned char lo, hi;
deb0e272
AM		 6548 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6549 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6550};
6551
6552/* Auto-generate _save*, _rest* functions in .sfpr. */
6553
4dfe6ac6 6554static bfd_boolean
deb0e272
AM		 6555sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6556{
6557 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6558 unsigned int i;
6559 size_t len = strlen (parm->name);
6560 bfd_boolean writing = FALSE;
699733f6 6561 char sym[16];
deb0e272 6562
4dfe6ac6
NC		 6563 if (htab == NULL)
6564 return FALSE;
6565
deb0e272
AM		 6566 memcpy (sym, parm->name, len);
6567 sym[len + 2] = 0;
6568
6569 for (i = parm->lo; i <= parm->hi; i++)
6570 {
6571 struct elf_link_hash_entry *h;
6572
6573 sym[len + 0] = i / 10 + '0';
6574 sym[len + 1] = i % 10 + '0';
6575 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6576 if (h != NULL
f5385ebf 6577 && !h->def_regular)
deb0e272
AM		 6578 {
6579 h->root.type = bfd_link_hash_defined;
6580 h->root.u.def.section = htab->sfpr;
6581 h->root.u.def.value = htab->sfpr->size;
6582 h->type = STT_FUNC;
f5385ebf 6583 h->def_regular = 1;
deb0e272
AM		 6584 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6585 writing = TRUE;
6586 if (htab->sfpr->contents == NULL)
6587 {
6588 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6589 if (htab->sfpr->contents == NULL)
6590 return FALSE;
6591 }
6592 }
6593 if (writing)
6594 {
6595 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6596 if (i != parm->hi)
6597 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6598 else
6599 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6600 htab->sfpr->size = p - htab->sfpr->contents;
6601 }
6602 }
6603
6604 return TRUE;
6605}
6606
6607static bfd_byte *
6608savegpr0 (bfd *abfd, bfd_byte *p, int r)
6609{
6610 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6611 return p + 4;
6612}
6613
6614static bfd_byte *
6615savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6616{
6617 p = savegpr0 (abfd, p, r);
a078d95a 6618 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6619 p = p + 4;
6620 bfd_put_32 (abfd, BLR, p);
6621 return p + 4;
6622}
6623
6624static bfd_byte *
6625restgpr0 (bfd *abfd, bfd_byte *p, int r)
6626{
6627 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6628 return p + 4;
6629}
6630
6631static bfd_byte *
6632restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6633{
a078d95a 6634 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6635 p = p + 4;
6636 p = restgpr0 (abfd, p, r);
6637 bfd_put_32 (abfd, MTLR_R0, p);
6638 p = p + 4;
6639 if (r == 29)
6640 {
6641 p = restgpr0 (abfd, p, 30);
6642 p = restgpr0 (abfd, p, 31);
6643 }
6644 bfd_put_32 (abfd, BLR, p);
6645 return p + 4;
6646}
6647
6648static bfd_byte *
6649savegpr1 (bfd *abfd, bfd_byte *p, int r)
6650{
6651 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6652 return p + 4;
6653}
6654
6655static bfd_byte *
6656savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6657{
6658 p = savegpr1 (abfd, p, r);
6659 bfd_put_32 (abfd, BLR, p);
6660 return p + 4;
6661}
6662
6663static bfd_byte *
6664restgpr1 (bfd *abfd, bfd_byte *p, int r)
6665{
6666 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6667 return p + 4;
6668}
6669
6670static bfd_byte *
6671restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6672{
6673 p = restgpr1 (abfd, p, r);
6674 bfd_put_32 (abfd, BLR, p);
6675 return p + 4;
6676}
6677
6678static bfd_byte *
6679savefpr (bfd *abfd, bfd_byte *p, int r)
6680{
6681 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6682 return p + 4;
6683}
6684
6685static bfd_byte *
6686savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6687{
6688 p = savefpr (abfd, p, r);
a078d95a 6689 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6690 p = p + 4;
6691 bfd_put_32 (abfd, BLR, p);
6692 return p + 4;
6693}
6694
6695static bfd_byte *
6696restfpr (bfd *abfd, bfd_byte *p, int r)
6697{
6698 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6699 return p + 4;
6700}
6701
6702static bfd_byte *
6703restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6704{
a078d95a 6705 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6706 p = p + 4;
6707 p = restfpr (abfd, p, r);
6708 bfd_put_32 (abfd, MTLR_R0, p);
6709 p = p + 4;
6710 if (r == 29)
6711 {
6712 p = restfpr (abfd, p, 30);
6713 p = restfpr (abfd, p, 31);
6714 }
6715 bfd_put_32 (abfd, BLR, p);
6716 return p + 4;
6717}
6718
6719static bfd_byte *
6720savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6721{
6722 p = savefpr (abfd, p, r);
6723 bfd_put_32 (abfd, BLR, p);
6724 return p + 4;
6725}
6726
6727static bfd_byte *
6728restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6729{
6730 p = restfpr (abfd, p, r);
6731 bfd_put_32 (abfd, BLR, p);
6732 return p + 4;
6733}
6734
6735static bfd_byte *
6736savevr (bfd *abfd, bfd_byte *p, int r)
6737{
6738 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6739 p = p + 4;
6740 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6741 return p + 4;
6742}
6743
6744static bfd_byte *
6745savevr_tail (bfd *abfd, bfd_byte *p, int r)
6746{
6747 p = savevr (abfd, p, r);
6748 bfd_put_32 (abfd, BLR, p);
6749 return p + 4;
6750}
6751
6752static bfd_byte *
6753restvr (bfd *abfd, bfd_byte *p, int r)
6754{
6755 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6756 p = p + 4;
6757 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6758 return p + 4;
6759}
6760
6761static bfd_byte *
6762restvr_tail (bfd *abfd, bfd_byte *p, int r)
6763{
6764 p = restvr (abfd, p, r);
6765 bfd_put_32 (abfd, BLR, p);
6766 return p + 4;
6767}
6768
e86ce104
AM		 6769/* Called via elf_link_hash_traverse to transfer dynamic linking
6770 information on function code symbol entries to their corresponding
6771 function descriptor symbol entries. */
deb0e272 6772
b34976b6 6773static bfd_boolean
4ce794b7 6774func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6775{
e86ce104 6776 struct bfd_link_info *info;
65f38f15 6777 struct ppc_link_hash_table *htab;
411e1bfb 6778 struct plt_entry *ent;
50bc7936
AM		 6779 struct ppc_link_hash_entry *fh;
6780 struct ppc_link_hash_entry *fdh;
6781 bfd_boolean force_local;
5bd4f169 6782
50bc7936
AM		 6783 fh = (struct ppc_link_hash_entry *) h;
6784 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6785 return TRUE;
e86ce104 6786
4ce794b7 6787 info = inf;
65f38f15 6788 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6789 if (htab == NULL)
6790 return FALSE;
5bd4f169 6791
c09bdfe5
AM		 6792 /* Resolve undefined references to dot-symbols as the value
6793 in the function descriptor, if we have one in a regular object.
6794 This is to satisfy cases like ".quad .foo". Calls to functions
6795 in dynamic objects are handled elsewhere. */
6796 if (fh->elf.root.type == bfd_link_hash_undefweak
6797 && fh->was_undefined
b31867b6
AM		 6798 && (fdh = defined_func_desc (fh)) != NULL
6799 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6800 && opd_entry_value (fdh->elf.root.u.def.section,
6801 fdh->elf.root.u.def.value,
c09bdfe5 6802 &fh->elf.root.u.def.section,
aef36ac1 6803 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6804 {
b31867b6 6805 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6806 fh->elf.forced_local = 1;
b31867b6
AM		 6807 fh->elf.def_regular = fdh->elf.def_regular;
6808 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6809 }
6810
e86ce104
AM		 6811 /* If this is a function code symbol, transfer dynamic linking
6812 information to the function descriptor symbol. */
50bc7936 6813 if (!fh->is_func)
b34976b6 6814 return TRUE;
e86ce104 6815
50bc7936 6816 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6817 if (ent->plt.refcount > 0)
6818 break;
50bc7936
AM		 6819 if (ent == NULL
6820 || fh->elf.root.root.string[0] != '.'
6821 || fh->elf.root.root.string[1] == '\0')
6822 return TRUE;
5bd4f169 6823
50bc7936
AM		 6824 /* Find the corresponding function descriptor symbol. Create it
6825 as undefined if necessary. */
5bd4f169 6826
b31867b6 6827 fdh = lookup_fdh (fh, htab);
50bc7936 6828 if (fdh == NULL
df131623 6829 && !info->executable
50bc7936
AM		 6830 && (fh->elf.root.type == bfd_link_hash_undefined
6831 || fh->elf.root.type == bfd_link_hash_undefweak))
6832 {
908b32fc 6833 fdh = make_fdh (info, fh);
bb700d78
AM		 6834 if (fdh == NULL)
6835 return FALSE;
50bc7936 6836 }
648cca2c 6837
908b32fc 6838 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 6839 code symbol is strong undefined, make the fake sym the same.
6840 If the function code symbol is defined, then force the fake
6841 descriptor local; We can't support overriding of symbols in a
6842 shared library on a fake descriptor. */
908b32fc
AM		 6843
6844 if (fdh != NULL
6845 && fdh->fake
433817dd 6846 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6847 {
433817dd
AM		 6848 if (fh->elf.root.type == bfd_link_hash_undefined)
6849 {
6850 fdh->elf.root.type = bfd_link_hash_undefined;
6851 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6852 }
6853 else if (fh->elf.root.type == bfd_link_hash_defined
6854 || fh->elf.root.type == bfd_link_hash_defweak)
6855 {
6856 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6857 }
908b32fc
AM		 6858 }
6859
50bc7936 6860 if (fdh != NULL
f5385ebf 6861 && !fdh->elf.forced_local
df131623 6862 && (!info->executable
f5385ebf
AM		 6863 || fdh->elf.def_dynamic
6864 || fdh->elf.ref_dynamic
50bc7936
AM		 6865 || (fdh->elf.root.type == bfd_link_hash_undefweak
6866 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6867 {
6868 if (fdh->elf.dynindx == -1)
c152c796 6869 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6870 return FALSE;
f5385ebf
AM		 6871 fdh->elf.ref_regular |= fh->elf.ref_regular;
6872 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6873 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6874 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6875 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6876 {
40d16e0b 6877 move_plt_plist (fh, fdh);
f5385ebf 6878 fdh->elf.needs_plt = 1;
e86ce104 6879 }
50bc7936 6880 fdh->is_func_descriptor = 1;
34814b9f
AM		 6881 fdh->oh = fh;
6882 fh->oh = fdh;
e86ce104
AM		 6883 }
6884
50bc7936
AM		 6885 /* Now that the info is on the function descriptor, clear the
6886 function code sym info. Any function code syms for which we
6887 don't have a definition in a regular file, we force local.
6888 This prevents a shared library from exporting syms that have
6889 been imported from another library. Function code syms that
6890 are really in the library we must leave global to prevent the
6891 linker dragging in a definition from a static library. */
93f3fa99
AM		 6892 force_local = (!fh->elf.def_regular
6893 || fdh == NULL
6894 || !fdh->elf.def_regular
6895 || fdh->elf.forced_local);
50bc7936
AM		 6896 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6897
b34976b6 6898 return TRUE;
e86ce104 6899}
40b8271b 6900
e86ce104 6901/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 6902 this hook to a) provide some gcc support functions, and b) transfer
6903 dynamic linking information gathered so far on function code symbol
6904 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6905
b34976b6 6906static bfd_boolean
4ce794b7
AM		 6907ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6908 struct bfd_link_info *info)
e86ce104
AM		 6909{
6910 struct ppc_link_hash_table *htab;
82bd7b59 6911 unsigned int i;
27fc25a1 6912 static const struct sfpr_def_parms funcs[] =
deb0e272
AM		 6913 {
6914 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6915 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6916 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6917 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6918 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6919 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6920 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6921 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6922 { "._savef", 14, 31, savefpr, savefpr1_tail },
6923 { "._restf", 14, 31, restfpr, restfpr1_tail },
6924 { "_savevr_", 20, 31, savevr, savevr_tail },
6925 { "_restvr_", 20, 31, restvr, restvr_tail }
6926 };
e86ce104
AM		 6927
6928 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6929 if (htab == NULL)
6930 return FALSE;
6931
5295321c
AM		 6932 if (!info->relocatable
6933 && htab->elf.hgot != NULL)
dba6fa9b
AM		 6934 {
6935 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6936 /* Make .TOC. defined so as to prevent it being made dynamic.
6937 The wrong value here is fixed later in ppc64_elf_set_toc. */
6938 htab->elf.hgot->type = STT_OBJECT;
6939 htab->elf.hgot->root.type = bfd_link_hash_defined;
6940 htab->elf.hgot->root.u.def.value = 0;
6941 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6942 htab->elf.hgot->def_regular = 1;
6943 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6944 | STV_HIDDEN);
6945 }
c66bb0ee 6946
82bd7b59
AM		 6947 if (htab->sfpr == NULL)
6948 /* We don't have any relocs. */
b34976b6 6949 return TRUE;
82bd7b59 6950
deb0e272
AM		 6951 /* Provide any missing _save* and _rest* functions. */
6952 htab->sfpr->size = 0;
7d4c687d 6953 if (htab->params->save_restore_funcs)
27fc25a1
AM		 6954 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6955 if (!sfpr_define (info, &funcs[i]))
6956 return FALSE;
82bd7b59 6957
4ce794b7 6958 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6959
eea6121a 6960 if (htab->sfpr->size == 0)
8423293d 6961 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6962
b34976b6 6963 return TRUE;
e86ce104
AM		 6964}
6965
a345bc8d
AM		 6966/* Return true if we have dynamic relocs that apply to read-only sections. */
6967
6968static bfd_boolean
6969readonly_dynrelocs (struct elf_link_hash_entry *h)
6970{
6971 struct ppc_link_hash_entry *eh;
6972 struct elf_dyn_relocs *p;
6973
6974 eh = (struct ppc_link_hash_entry *) h;
6975 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6976 {
6977 asection *s = p->sec->output_section;
6978
6979 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6980 return TRUE;
6981 }
6982 return FALSE;
6983}
6984
e86ce104
AM		 6985/* Adjust a symbol defined by a dynamic object and referenced by a
6986 regular object. The current definition is in some section of the
6987 dynamic object, but we're not including those sections. We have to
6988 change the definition to something the rest of the link can
6989 understand. */
6990
b34976b6 6991static bfd_boolean
4ce794b7
AM		 6992ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6993 struct elf_link_hash_entry *h)
e86ce104
AM		 6994{
6995 struct ppc_link_hash_table *htab;
e86ce104 6996 asection *s;
e86ce104
AM		 6997
6998 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6999 if (htab == NULL)
7000 return FALSE;
e86ce104
AM		 7001
7002 /* Deal with function syms. */
7003 if (h->type == STT_FUNC
e054468f 7004 || h->type == STT_GNU_IFUNC
f5385ebf 7005 || h->needs_plt)
e86ce104
AM		 7006 {
7007 /* Clear procedure linkage table information for any symbol that
7008 won't need a .plt entry. */
411e1bfb
AM		 7009 struct plt_entry *ent;
7010 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7011 if (ent->plt.refcount > 0)
7012 break;
8387904d 7013 if (ent == NULL
e054468f
AM		 7014 || (h->type != STT_GNU_IFUNC
7015 && (SYMBOL_CALLS_LOCAL (info, h)
7016 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7017 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 7018 {
411e1bfb 7019 h->plt.plist = NULL;
f5385ebf 7020 h->needs_plt = 0;
d1eca1e4 7021 h->pointer_equality_needed = 0;
40b8271b 7022 }
a345bc8d
AM		 7023 else if (abiversion (info->output_bfd) == 2)
7024 {
d1eca1e4
AM		 7025 /* Taking a function's address in a read/write section
7026 doesn't require us to define the function symbol in the
7027 executable on a global entry stub. A dynamic reloc can
7028 be used instead. */
7029 if (h->pointer_equality_needed
1009ef28 7030 && h->type != STT_GNU_IFUNC
d1eca1e4
AM		 7031 && !readonly_dynrelocs (h))
7032 {
7033 h->pointer_equality_needed = 0;
7034 h->non_got_ref = 0;
7035 }
7036
a345bc8d
AM		 7037 /* After adjust_dynamic_symbol, non_got_ref set in the
7038 non-shared case means that we have allocated space in
7039 .dynbss for the symbol and thus dyn_relocs for this
7040 symbol should be discarded.
7041 If we get here we know we are making a PLT entry for this
7042 symbol, and in an executable we'd normally resolve
7043 relocations against this symbol to the PLT entry. Allow
7044 dynamic relocs if the reference is weak, and the dynamic
7045 relocs will not cause text relocation. */
d1eca1e4
AM		 7046 else if (!h->ref_regular_nonweak
7047 && h->non_got_ref
7048 && h->type != STT_GNU_IFUNC
7049 && !readonly_dynrelocs (h))
a345bc8d
AM		 7050 h->non_got_ref = 0;
7051
7052 /* If making a plt entry, then we don't need copy relocs. */
7053 return TRUE;
7054 }
5bd4f169 7055 }
bbd7ec4a 7056 else
411e1bfb 7057 h->plt.plist = NULL;
5bd4f169
AM		 7058
7059 /* If this is a weak symbol, and there is a real definition, the
7060 processor independent code will have arranged for us to see the
7061 real definition first, and we can just use the same value. */
f6e332e6 7062 if (h->u.weakdef != NULL)
5bd4f169 7063 {
f6e332e6
AM		 7064 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7065 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7066 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7067 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7068 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7069 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7070 return TRUE;
5bd4f169
AM		 7071 }
7072
5bd4f169
AM		 7073 /* If we are creating a shared library, we must presume that the
7074 only references to the symbol are via the global offset table.
7075 For such cases we need not do anything here; the relocations will
7076 be handled correctly by relocate_section. */
7077 if (info->shared)
b34976b6 7078 return TRUE;
5bd4f169 7079
65f38f15
AM		 7080 /* If there are no references to this symbol that do not use the
7081 GOT, we don't need to generate a copy reloc. */
f5385ebf 7082 if (!h->non_got_ref)
b34976b6 7083 return TRUE;
65f38f15 7084
b186458a
JJ		 7085 /* Don't generate a copy reloc for symbols defined in the executable. */
7086 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7087 return TRUE;
7088
a345bc8d
AM		 7089 /* If we didn't find any dynamic relocs in read-only sections, then
7090 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7091 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7092 {
a345bc8d
AM		 7093 h->non_got_ref = 0;
7094 return TRUE;
65f38f15
AM		 7095 }
7096
5d35169e 7097 if (h->plt.plist != NULL)
97b639ba
AM		 7098 {
7099 /* We should never get here, but unfortunately there are versions
7100 of gcc out there that improperly (for this ABI) put initialized
7101 function pointers, vtable refs and suchlike in read-only
7102 sections. Allow them to proceed, but warn that this might
7103 break at runtime. */
25f53a85 7104 info->callbacks->einfo
bc30df16 7105 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7106 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7107 h->root.root.string);
7108 }
5d35169e
AM		 7109
7110 /* This is a reference to a symbol defined by a dynamic object which
7111 is not a function. */
7112
5bd4f169
AM		 7113 /* We must allocate the symbol in our .dynbss section, which will
7114 become part of the .bss section of the executable. There will be
7115 an entry for this symbol in the .dynsym section. The dynamic
7116 object will contain position independent code, so all references
7117 from the dynamic object to this symbol will go through the global
7118 offset table. The dynamic linker will use the .dynsym entry to
7119 determine the address it must put in the global offset table, so
7120 both the dynamic object and the regular object will refer to the
7121 same memory location for the variable. */
5bd4f169 7122
04c9666a
AM		 7123 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7124 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7125 runtime process image. We need to remember the offset into the
7126 .rela.bss section we are going to use. */
1d7e9d18 7127 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7128 {
eea6121a 7129 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7130 h->needs_copy = 1;
5bd4f169
AM		 7131 }
7132
4ce794b7 7133 s = htab->dynbss;
5bd4f169 7134
6cabe1ea 7135 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5bd4f169
AM		 7136}
7137
e86ce104
AM		 7138/* If given a function descriptor symbol, hide both the function code
7139 sym and the descriptor. */
7140static void
4ce794b7
AM		 7141ppc64_elf_hide_symbol (struct bfd_link_info *info,
7142 struct elf_link_hash_entry *h,
7143 bfd_boolean force_local)
e86ce104 7144{
34814b9f 7145 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7146 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7147
34814b9f
AM		 7148 eh = (struct ppc_link_hash_entry *) h;
7149 if (eh->is_func_descriptor)
e86ce104 7150 {
34814b9f 7151 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7152
721956f4 7153 if (fh == NULL)
d1329ca3
AM		 7154 {
7155 const char *p, *q;
7156 struct ppc_link_hash_table *htab;
7157 char save;
7158
7159 /* We aren't supposed to use alloca in BFD because on
7160 systems which do not have alloca the version in libiberty
7161 calls xmalloc, which might cause the program to crash
7162 when it runs out of memory. This function doesn't have a
7163 return status, so there's no way to gracefully return an
7164 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7165 accessed; It's either a string in an ELF string table,
7166 or allocated in an objalloc structure. */
d1329ca3 7167
34814b9f 7168 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7169 save = *p;
7170 *(char *) p = '.';
7171 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7172 if (htab == NULL)
7173 return;
7174
34814b9f
AM		 7175 fh = (struct ppc_link_hash_entry *)
7176 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7177 *(char *) p = save;
7178
7179 /* Unfortunately, if it so happens that the string we were
7180 looking for was allocated immediately before this string,
7181 then we overwrote the string terminator. That's the only
7182 reason the lookup should fail. */
7183 if (fh == NULL)
7184 {
34814b9f
AM		 7185 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7186 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7187 --q, --p;
34814b9f
AM		 7188 if (q < eh->elf.root.root.string && *p == '.')
7189 fh = (struct ppc_link_hash_entry *)
7190 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7191 }
7192 if (fh != NULL)
7193 {
34814b9f
AM		 7194 eh->oh = fh;
7195 fh->oh = eh;
d1329ca3
AM		 7196 }
7197 }
e86ce104 7198 if (fh != NULL)
34814b9f 7199 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7200 }
7201}
7202
411e1bfb 7203static bfd_boolean
8843416a
AM		 7204get_sym_h (struct elf_link_hash_entry **hp,
7205 Elf_Internal_Sym **symp,
7206 asection **symsecp,
f961d9dd 7207 unsigned char **tls_maskp,
8843416a
AM		 7208 Elf_Internal_Sym **locsymsp,
7209 unsigned long r_symndx,
7210 bfd *ibfd)
411e1bfb 7211{
0ffa91dd 7212 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7213
7214 if (r_symndx >= symtab_hdr->sh_info)
7215 {
7216 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7217 struct elf_link_hash_entry *h;
7218
7219 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7220 h = elf_follow_link (h);
411e1bfb
AM		 7221
7222 if (hp != NULL)
7223 *hp = h;
7224
7225 if (symp != NULL)
7226 *symp = NULL;
7227
7228 if (symsecp != NULL)
7229 {
7230 asection *symsec = NULL;
7231 if (h->root.type == bfd_link_hash_defined
7232 || h->root.type == bfd_link_hash_defweak)
7233 symsec = h->root.u.def.section;
7234 *symsecp = symsec;
7235 }
7236
e7b938ca 7237 if (tls_maskp != NULL)
411e1bfb
AM		 7238 {
7239 struct ppc_link_hash_entry *eh;
7240
7241 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7242 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7243 }
7244 }
7245 else
7246 {
7247 Elf_Internal_Sym *sym;
7248 Elf_Internal_Sym *locsyms = *locsymsp;
7249
7250 if (locsyms == NULL)
7251 {
7252 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7253 if (locsyms == NULL)
7254 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7255 symtab_hdr->sh_info,
7256 0, NULL, NULL, NULL);
7257 if (locsyms == NULL)
7258 return FALSE;
7259 *locsymsp = locsyms;
7260 }
7261 sym = locsyms + r_symndx;
7262
7263 if (hp != NULL)
7264 *hp = NULL;
7265
7266 if (symp != NULL)
7267 *symp = sym;
7268
7269 if (symsecp != NULL)
cb33740c 7270 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7271
e7b938ca 7272 if (tls_maskp != NULL)
411e1bfb
AM		 7273 {
7274 struct got_entry **lgot_ents;
f961d9dd 7275 unsigned char *tls_mask;
411e1bfb 7276
e7b938ca 7277 tls_mask = NULL;
411e1bfb
AM		 7278 lgot_ents = elf_local_got_ents (ibfd);
7279 if (lgot_ents != NULL)
7280 {
e054468f
AM		 7281 struct plt_entry **local_plt = (struct plt_entry **)
7282 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7283 unsigned char *lgot_masks = (unsigned char *)
e054468f 7284 (local_plt + symtab_hdr->sh_info);
e7b938ca 7285 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7286 }
e7b938ca 7287 *tls_maskp = tls_mask;
411e1bfb
AM		 7288 }
7289 }
7290 return TRUE;
7291}
7292
e7b938ca 7293/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7294 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7295 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7296
7297static int
f961d9dd 7298get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7299 unsigned long *toc_symndx,
7300 bfd_vma *toc_addend,
0d4792f7 7301 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7302 const Elf_Internal_Rela *rel,
7303 bfd *ibfd)
411e1bfb
AM		 7304{
7305 unsigned long r_symndx;
0d4792f7 7306 int next_r;
411e1bfb
AM		 7307 struct elf_link_hash_entry *h;
7308 Elf_Internal_Sym *sym;
7309 asection *sec;
7310 bfd_vma off;
7311
7312 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7313 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7314 return 0;
411e1bfb 7315
e7b938ca 7316 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7317 || sec == NULL
6bee8834 7318 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7319 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7320 return 1;
411e1bfb
AM		 7321
7322 /* Look inside a TOC section too. */
7323 if (h != NULL)
7324 {
7325 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7326 off = h->root.u.def.value;
7327 }
7328 else
7329 off = sym->st_value;
7330 off += rel->r_addend;
7331 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7332 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7333 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7334 if (toc_symndx != NULL)
7335 *toc_symndx = r_symndx;
3a71aa26
AM		 7336 if (toc_addend != NULL)
7337 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7338 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7339 return 0;
854b41e7 7340 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7341 && (next_r == -1 || next_r == -2))
7342 return 1 - next_r;
951fd09b 7343 return 1;
411e1bfb
AM		 7344}
7345
3b421ab3
AM		 7346/* Find (or create) an entry in the tocsave hash table. */
7347
7348static struct tocsave_entry *
7349tocsave_find (struct ppc_link_hash_table *htab,
7350 enum insert_option insert,
7351 Elf_Internal_Sym **local_syms,
7352 const Elf_Internal_Rela *irela,
7353 bfd *ibfd)
7354{
7355 unsigned long r_indx;
7356 struct elf_link_hash_entry *h;
7357 Elf_Internal_Sym *sym;
7358 struct tocsave_entry ent, *p;
7359 hashval_t hash;
7360 struct tocsave_entry **slot;
7361
7362 r_indx = ELF64_R_SYM (irela->r_info);
7363 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7364 return NULL;
7365 if (ent.sec == NULL || ent.sec->output_section == NULL)
7366 {
7367 (*_bfd_error_handler)
7368 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7369 return NULL;
7370 }
7371
7372 if (h != NULL)
7373 ent.offset = h->root.u.def.value;
7374 else
7375 ent.offset = sym->st_value;
7376 ent.offset += irela->r_addend;
7377
7378 hash = tocsave_htab_hash (&ent);
7379 slot = ((struct tocsave_entry **)
7380 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7381 if (slot == NULL)
7382 return NULL;
7383
7384 if (*slot == NULL)
7385 {
7386 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7387 if (p == NULL)
7388 return NULL;
7389 *p = ent;
7390 *slot = p;
7391 }
7392 return *slot;
7393}
7394
754021d0 7395/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7396 code for the old ABI, these will already have been done. */
754021d0
AM		 7397
7398static bfd_boolean
7399adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7400{
7401 struct ppc_link_hash_entry *eh;
7402 asection *sym_sec;
74f0fb50 7403 struct _opd_sec_data *opd;
754021d0
AM		 7404
7405 if (h->root.type == bfd_link_hash_indirect)
7406 return TRUE;
7407
754021d0
AM		 7408 if (h->root.type != bfd_link_hash_defined
7409 && h->root.type != bfd_link_hash_defweak)
7410 return TRUE;
7411
7412 eh = (struct ppc_link_hash_entry *) h;
7413 if (eh->adjust_done)
7414 return TRUE;
7415
7416 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7417 opd = get_opd_info (sym_sec);
7418 if (opd != NULL && opd->adjust != NULL)
754021d0 7419 {
51aecdc5 7420 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
4025353c
AM		 7421 if (adjust == -1)
7422 {
7423 /* This entry has been deleted. */
b3fac117 7424 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7425 if (dsec == NULL)
7426 {
7427 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7428 if (discarded_section (dsec))
81688140 7429 {
b3fac117 7430 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7431 break;
7432 }
7433 }
4025353c 7434 eh->elf.root.u.def.value = 0;
81688140 7435 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7436 }
7437 else
7438 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7439 eh->adjust_done = 1;
7440 }
7441 return TRUE;
7442}
7443
8c1d1bb8 7444/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7445 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7446 have already been determined. */
7447
7448static bfd_boolean
7449dec_dynrel_count (bfd_vma r_info,
7450 asection *sec,
7451 struct bfd_link_info *info,
7452 Elf_Internal_Sym **local_syms,
7453 struct elf_link_hash_entry *h,
19e08130 7454 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7455{
7456 enum elf_ppc64_reloc_type r_type;
19e08130 7457 asection *sym_sec = NULL;
8c1d1bb8
AM		 7458
7459 /* Can this reloc be dynamic? This switch, and later tests here
7460 should be kept in sync with the code in check_relocs. */
7461 r_type = ELF64_R_TYPE (r_info);
7462 switch (r_type)
7463 {
7464 default:
7465 return TRUE;
7466
7467 case R_PPC64_TPREL16:
7468 case R_PPC64_TPREL16_LO:
7469 case R_PPC64_TPREL16_HI:
7470 case R_PPC64_TPREL16_HA:
7471 case R_PPC64_TPREL16_DS:
7472 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7473 case R_PPC64_TPREL16_HIGH:
7474 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7475 case R_PPC64_TPREL16_HIGHER:
7476 case R_PPC64_TPREL16_HIGHERA:
7477 case R_PPC64_TPREL16_HIGHEST:
7478 case R_PPC64_TPREL16_HIGHESTA:
7479 if (!info->shared)
7480 return TRUE;
7481
7482 case R_PPC64_TPREL64:
7483 case R_PPC64_DTPMOD64:
7484 case R_PPC64_DTPREL64:
7485 case R_PPC64_ADDR64:
7486 case R_PPC64_REL30:
7487 case R_PPC64_REL32:
7488 case R_PPC64_REL64:
7489 case R_PPC64_ADDR14:
7490 case R_PPC64_ADDR14_BRNTAKEN:
7491 case R_PPC64_ADDR14_BRTAKEN:
7492 case R_PPC64_ADDR16:
7493 case R_PPC64_ADDR16_DS:
7494 case R_PPC64_ADDR16_HA:
7495 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7496 case R_PPC64_ADDR16_HIGH:
7497 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7498 case R_PPC64_ADDR16_HIGHER:
7499 case R_PPC64_ADDR16_HIGHERA:
7500 case R_PPC64_ADDR16_HIGHEST:
7501 case R_PPC64_ADDR16_HIGHESTA:
7502 case R_PPC64_ADDR16_LO:
7503 case R_PPC64_ADDR16_LO_DS:
7504 case R_PPC64_ADDR24:
7505 case R_PPC64_ADDR32:
7506 case R_PPC64_UADDR16:
7507 case R_PPC64_UADDR32:
7508 case R_PPC64_UADDR64:
7509 case R_PPC64_TOC:
7510 break;
7511 }
7512
7513 if (local_syms != NULL)
7514 {
7515 unsigned long r_symndx;
8c1d1bb8
AM		 7516 bfd *ibfd = sec->owner;
7517
7518 r_symndx = ELF64_R_SYM (r_info);
7519 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7520 return FALSE;
7521 }
7522
7523 if ((info->shared
1d483afe 7524 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7525 || (h != NULL
198f1157 7526 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7527 || h->root.type == bfd_link_hash_defweak
7528 || !h->def_regular))))
7529 || (ELIMINATE_COPY_RELOCS
7530 && !info->shared
7531 && h != NULL
7532 && (h->root.type == bfd_link_hash_defweak
7533 || !h->def_regular)))
7534 ;
7535 else
7536 return TRUE;
7537
7538 if (h != NULL)
6edfbbad 7539 {
19e08130
AM		 7540 struct elf_dyn_relocs *p;
7541 struct elf_dyn_relocs **pp;
7542 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7543
7544 /* elf_gc_sweep may have already removed all dyn relocs associated
7545 with local syms for a given section. Also, symbol flags are
7546 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7547 report a dynreloc miscount. */
7548 if (*pp == NULL && info->gc_sections)
7549 return TRUE;
7550
7551 while ((p = *pp) != NULL)
60124e18 7552 {
19e08130
AM		 7553 if (p->sec == sec)
7554 {
7555 if (!must_be_dyn_reloc (info, r_type))
7556 p->pc_count -= 1;
7557 p->count -= 1;
7558 if (p->count == 0)
7559 *pp = p->next;
7560 return TRUE;
7561 }
7562 pp = &p->next;
60124e18 7563 }
6edfbbad 7564 }
19e08130
AM		 7565 else
7566 {
7567 struct ppc_dyn_relocs *p;
7568 struct ppc_dyn_relocs **pp;
7569 void *vpp;
7570 bfd_boolean is_ifunc;
8c1d1bb8 7571
19e08130
AM		 7572 if (local_syms == NULL)
7573 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7574 if (sym_sec == NULL)
7575 sym_sec = sec;
c57da1a7 7576
19e08130
AM		 7577 vpp = &elf_section_data (sym_sec)->local_dynrel;
7578 pp = (struct ppc_dyn_relocs **) vpp;
7579
7580 if (*pp == NULL && info->gc_sections)
7581 return TRUE;
7582
7583 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7584 while ((p = *pp) != NULL)
8c1d1bb8 7585 {
19e08130
AM		 7586 if (p->sec == sec && p->ifunc == is_ifunc)
7587 {
7588 p->count -= 1;
7589 if (p->count == 0)
7590 *pp = p->next;
7591 return TRUE;
7592 }
7593 pp = &p->next;
8c1d1bb8 7594 }
8c1d1bb8
AM		 7595 }
7596
8de848d8 7597 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7598 sec->owner, sec);
8c1d1bb8
AM		 7599 bfd_set_error (bfd_error_bad_value);
7600 return FALSE;
7601}
7602
754021d0
AM		 7603/* Remove unused Official Procedure Descriptor entries. Currently we
7604 only remove those associated with functions in discarded link-once
7605 sections, or weakly defined functions that have been overridden. It
7606 would be possible to remove many more entries for statically linked
7607 applications. */
7608
b34976b6 7609bfd_boolean
e7d1c40c 7610ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7611{
7612 bfd *ibfd;
754021d0 7613 bfd_boolean some_edited = FALSE;
3f764659 7614 asection *need_pad = NULL;
e7d1c40c
AM		 7615 struct ppc_link_hash_table *htab;
7616
7617 htab = ppc_hash_table (info);
7618 if (htab == NULL)
7619 return FALSE;
1e2f5b6e 7620
c72f2fb2 7621 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7622 {
7623 asection *sec;
7624 Elf_Internal_Rela *relstart, *rel, *relend;
7625 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7626 Elf_Internal_Sym *local_syms;
74f0fb50 7627 struct _opd_sec_data *opd;
51aecdc5 7628 bfd_boolean need_edit, add_aux_fields, broken;
3f764659 7629 bfd_size_type cnt_16b = 0;
1e2f5b6e 7630
854b41e7
AM		 7631 if (!is_ppc64_elf (ibfd))
7632 continue;
7633
1e2f5b6e 7634 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7635 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7636 continue;
7637
dbaa2011 7638 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7639 continue;
7640
1e2f5b6e
AM		 7641 if (sec->output_section == bfd_abs_section_ptr)
7642 continue;
7643
7644 /* Look through the section relocs. */
7645 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7646 continue;
7647
6cdc0ccc 7648 local_syms = NULL;
0ffa91dd 7649 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7650
7651 /* Read the relocations. */
4ce794b7 7652 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7653 info->keep_memory);
1e2f5b6e 7654 if (relstart == NULL)
b34976b6 7655 return FALSE;
1e2f5b6e
AM		 7656
7657 /* First run through the relocs to check they are sane, and to
7658 determine whether we need to edit this opd section. */
b34976b6 7659 need_edit = FALSE;
51aecdc5 7660 broken = FALSE;
3f764659 7661 need_pad = sec;
1e2f5b6e 7662 relend = relstart + sec->reloc_count;
50bc7936 7663 for (rel = relstart; rel < relend; )
1e2f5b6e 7664 {
04c9666a 7665 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7666 unsigned long r_symndx;
7667 asection *sym_sec;
7668 struct elf_link_hash_entry *h;
7669 Elf_Internal_Sym *sym;
51aecdc5 7670 bfd_vma offset;
1e2f5b6e 7671
51aecdc5 7672 /* .opd contains an array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7673 only interested in the reloc pointing to a function entry
7674 point. */
51aecdc5
AM		 7675 offset = rel->r_offset;
7676 if (rel + 1 == relend
7677 || rel[1].r_offset != offset + 8)
1e2f5b6e
AM		 7678 {
7679 /* If someone messes with .opd alignment then after a
7680 "ld -r" we might have padding in the middle of .opd.
7681 Also, there's nothing to prevent someone putting
7682 something silly in .opd with the assembler. No .opd
b34976b6 7683 optimization for them! */
3f764659 7684 broken_opd:
1e2f5b6e 7685 (*_bfd_error_handler)
d003868e 7686 (_("%B: .opd is not a regular array of opd entries"), ibfd);
51aecdc5 7687 broken = TRUE;
1e2f5b6e
AM		 7688 break;
7689 }
7690
50bc7936
AM		 7691 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7692 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7693 {
7694 (*_bfd_error_handler)
d003868e
AM		 7695 (_("%B: unexpected reloc type %u in .opd section"),
7696 ibfd, r_type);
51aecdc5 7697 broken = TRUE;
50bc7936
AM		 7698 break;
7699 }
7700
1e2f5b6e 7701 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7702 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7703 r_symndx, ibfd))
50bc7936 7704 goto error_ret;
1e2f5b6e
AM		 7705
7706 if (sym_sec == NULL || sym_sec->owner == NULL)
7707 {
411e1bfb
AM		 7708 const char *sym_name;
7709 if (h != NULL)
7710 sym_name = h->root.root.string;
7711 else
26c61ae5
L		 7712 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7713 sym_sec);
411e1bfb 7714
1e2f5b6e 7715 (*_bfd_error_handler)
d003868e
AM		 7716 (_("%B: undefined sym `%s' in .opd section"),
7717 ibfd, sym_name);
51aecdc5 7718 broken = TRUE;
1e2f5b6e
AM		 7719 break;
7720 }
7721
51020317
AM		 7722 /* opd entries are always for functions defined in the
7723 current input bfd. If the symbol isn't defined in the
7724 input bfd, then we won't be using the function in this
7725 bfd; It must be defined in a linkonce section in another
7726 bfd, or is weak. It's also possible that we are
7727 discarding the function due to a linker script /DISCARD/,
7728 which we test for via the output_section. */
7729 if (sym_sec->owner != ibfd
7730 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7731 need_edit = TRUE;
1e2f5b6e 7732
50bc7936 7733 rel += 2;
51aecdc5
AM		 7734 if (rel + 1 == relend
7735 || (rel + 2 < relend
7736 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7737 ++rel;
7738
7739 if (rel == relend)
3f764659
JJ		 7740 {
7741 if (sec->size == offset + 24)
7742 {
7743 need_pad = NULL;
7744 break;
7745 }
51aecdc5 7746 if (sec->size == offset + 16)
3f764659
JJ		 7747 {
7748 cnt_16b++;
7749 break;
7750 }
7751 goto broken_opd;
7752 }
3f764659
JJ		 7753 else if (rel + 1 < relend
7754 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7755 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7756 {
51aecdc5
AM		 7757 if (rel[0].r_offset == offset + 16)
7758 cnt_16b++;
7759 else if (rel[0].r_offset != offset + 24)
7760 goto broken_opd;
3f764659
JJ		 7761 }
7762 else
7763 goto broken_opd;
1e2f5b6e
AM		 7764 }
7765
e7d1c40c 7766 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659 7767
51aecdc5 7768 if (!broken && (need_edit || add_aux_fields))
1e2f5b6e
AM		 7769 {
7770 Elf_Internal_Rela *write_rel;
d4730f92 7771 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7772 bfd_byte *rptr, *wptr;
983bddc8 7773 bfd_byte *new_contents;
74f0fb50
AM		 7774 bfd_size_type amt;
7775
983bddc8 7776 new_contents = NULL;
51aecdc5 7777 amt = OPD_NDX (sec->size) * sizeof (long);
74f0fb50 7778 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7779 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7780 if (opd->adjust == NULL)
7781 return FALSE;
7782 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7783
7784 /* This seems a waste of time as input .opd sections are all
7785 zeros as generated by gcc, but I suppose there's no reason
7786 this will always be so. We might start putting something in
7787 the third word of .opd entries. */
7788 if ((sec->flags & SEC_IN_MEMORY) == 0)
7789 {
eea6121a
AM		 7790 bfd_byte *loc;
7791 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7792 {
eea6121a
AM		 7793 if (loc != NULL)
7794 free (loc);
50bc7936 7795 error_ret:
6cdc0ccc
AM		 7796 if (local_syms != NULL
7797 && symtab_hdr->contents != (unsigned char *) local_syms)
7798 free (local_syms);
6cdc0ccc
AM		 7799 if (elf_section_data (sec)->relocs != relstart)
7800 free (relstart);
b34976b6 7801 return FALSE;
6cdc0ccc 7802 }
1e2f5b6e
AM		 7803 sec->contents = loc;
7804 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7805 }
7806
7807 elf_section_data (sec)->relocs = relstart;
7808
3f764659 7809 new_contents = sec->contents;
3f764659
JJ		 7810 if (add_aux_fields)
7811 {
7812 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7813 if (new_contents == NULL)
7814 return FALSE;
51aecdc5 7815 need_pad = NULL;
3f764659 7816 }
b4f4e59f
AM		 7817 wptr = new_contents;
7818 rptr = sec->contents;
1e2f5b6e 7819 write_rel = relstart;
51aecdc5 7820 for (rel = relstart; rel < relend; )
1e2f5b6e 7821 {
50bc7936
AM		 7822 unsigned long r_symndx;
7823 asection *sym_sec;
7824 struct elf_link_hash_entry *h;
51aecdc5 7825 struct ppc_link_hash_entry *fdh = NULL;
50bc7936 7826 Elf_Internal_Sym *sym;
51aecdc5
AM		 7827 long opd_ent_size;
7828 Elf_Internal_Rela *next_rel;
7829 bfd_boolean skip;
50bc7936
AM		 7830
7831 r_symndx = ELF64_R_SYM (rel->r_info);
7832 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7833 r_symndx, ibfd))
50bc7936
AM		 7834 goto error_ret;
7835
51aecdc5
AM		 7836 next_rel = rel + 2;
7837 if (next_rel + 1 == relend
7838 || (next_rel + 2 < relend
7839 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7840 ++next_rel;
7841
7842 /* See if the .opd entry is full 24 byte or
7843 16 byte (with fd_aux entry overlapped with next
7844 fd_func). */
7845 opd_ent_size = 24;
7846 if (next_rel == relend)
1e2f5b6e 7847 {
51aecdc5 7848 if (sec->size == rel->r_offset + 16)
3f764659 7849 opd_ent_size = 16;
51aecdc5
AM		 7850 }
7851 else if (next_rel->r_offset == rel->r_offset + 16)
7852 opd_ent_size = 16;
3f764659 7853
51aecdc5
AM		 7854 if (h != NULL
7855 && h->root.root.string[0] == '.')
7856 {
7857 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7858 if (fdh != NULL
7859 && fdh->elf.root.type != bfd_link_hash_defined
7860 && fdh->elf.root.type != bfd_link_hash_defweak)
7861 fdh = NULL;
7862 }
1e2f5b6e 7863
51aecdc5
AM		 7864 skip = (sym_sec->owner != ibfd
7865 || sym_sec->output_section == bfd_abs_section_ptr);
7866 if (skip)
7867 {
7868 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7 7869 {
51aecdc5
AM		 7870 /* Arrange for the function descriptor sym
7871 to be dropped. */
7872 fdh->elf.root.u.def.value = 0;
7873 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7874 }
51aecdc5 7875 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
1e2f5b6e 7876
51aecdc5
AM		 7877 if (NO_OPD_RELOCS || info->relocatable)
7878 rel = next_rel;
7879 else
7880 while (1)
7881 {
7882 if (!dec_dynrel_count (rel->r_info, sec, info,
7883 NULL, h, sym))
7884 goto error_ret;
754021d0 7885
51aecdc5
AM		 7886 if (++rel == next_rel)
7887 break;
1e2f5b6e 7888
51aecdc5
AM		 7889 r_symndx = ELF64_R_SYM (rel->r_info);
7890 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7891 r_symndx, ibfd))
7892 goto error_ret;
7893 }
50bc7936
AM		 7894 }
7895 else
1e2f5b6e 7896 {
51aecdc5
AM		 7897 /* We'll be keeping this opd entry. */
7898 long adjust;
7899
7900 if (fdh != NULL)
7901 {
7902 /* Redefine the function descriptor symbol to
7903 this location in the opd section. It is
7904 necessary to update the value here rather
7905 than using an array of adjustments as we do
7906 for local symbols, because various places
7907 in the generic ELF code use the value
7908 stored in u.def.value. */
7909 fdh->elf.root.u.def.value = wptr - new_contents;
7910 fdh->adjust_done = 1;
7911 }
7912
7913 /* Local syms are a bit tricky. We could
7914 tweak them as they can be cached, but
7915 we'd need to look through the local syms
7916 for the function descriptor sym which we
7917 don't have at the moment. So keep an
7918 array of adjustments. */
7919 adjust = (wptr - new_contents) - (rptr - sec->contents);
7920 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
7921
7922 if (wptr != rptr)
7923 memcpy (wptr, rptr, opd_ent_size);
7924 wptr += opd_ent_size;
7925 if (add_aux_fields && opd_ent_size == 16)
7926 {
7927 memset (wptr, '\0', 8);
7928 wptr += 8;
7929 }
7930
50bc7936 7931 /* We need to adjust any reloc offsets to point to the
51aecdc5
AM		 7932 new opd entries. */
7933 for ( ; rel != next_rel; ++rel)
7934 {
7935 rel->r_offset += adjust;
7936 if (write_rel != rel)
7937 memcpy (write_rel, rel, sizeof (*rel));
7938 ++write_rel;
7939 }
1e2f5b6e 7940 }
51aecdc5
AM		 7941
7942 rptr += opd_ent_size;
1e2f5b6e
AM		 7943 }
7944
3f764659 7945 sec->size = wptr - new_contents;
1e2f5b6e 7946 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7947 if (add_aux_fields)
7948 {
7949 free (sec->contents);
7950 sec->contents = new_contents;
7951 }
7952
05bf9422 7953 /* Fudge the header size too, as this is used later in
cdcf6e38 7954 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7955 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7956 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7957 some_edited = TRUE;
1e2f5b6e 7958 }
6cdc0ccc 7959 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7960 free (relstart);
6cdc0ccc 7961
411e1bfb
AM		 7962 if (local_syms != NULL
7963 && symtab_hdr->contents != (unsigned char *) local_syms)
7964 {
7965 if (!info->keep_memory)
7966 free (local_syms);
7967 else
7968 symtab_hdr->contents = (unsigned char *) local_syms;
7969 }
7970 }
7971
754021d0
AM		 7972 if (some_edited)
7973 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7974
3f764659
JJ		 7975 /* If we are doing a final link and the last .opd entry is just 16 byte
7976 long, add a 8 byte padding after it. */
7977 if (need_pad != NULL && !info->relocatable)
7978 {
7979 bfd_byte *p;
7980
7981 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7982 {
7983 BFD_ASSERT (need_pad->size > 0);
7984
7985 p = bfd_malloc (need_pad->size + 8);
7986 if (p == NULL)
7987 return FALSE;
699733f6 7988
3f764659
JJ		 7989 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7990 p, 0, need_pad->size))
7991 return FALSE;
7992
7993 need_pad->contents = p;
7994 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7995 }
7996 else
7997 {
7998 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7999 if (p == NULL)
8000 return FALSE;
8001
8002 need_pad->contents = p;
8003 }
8004
8005 memset (need_pad->contents + need_pad->size, 0, 8);
8006 need_pad->size += 8;
8007 }
8008
411e1bfb
AM		 8009 return TRUE;
8010}
8011
e1918d23 8012/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 8013
e1918d23 8014asection *
e7d1c40c 8015ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 8016{
411e1bfb
AM		 8017 struct ppc_link_hash_table *htab;
8018
411e1bfb 8019 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8020 if (htab == NULL)
8021 return NULL;
8022
ee67d69a
AM		 8023 if (abiversion (info->output_bfd) == 1)
8024 htab->opd_abi = 1;
8025
e7d1c40c 8026 if (htab->params->no_multi_toc)
33c0ec9d
AM		 8027 htab->do_multi_toc = 0;
8028 else if (!htab->do_multi_toc)
e7d1c40c 8029 htab->params->no_multi_toc = 1;
33c0ec9d 8030
3a71aa26
AM		 8031 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8032 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8033 FALSE, FALSE, TRUE));
a7f2871e
AM		 8034 /* Move dynamic linking info to the function descriptor sym. */
8035 if (htab->tls_get_addr != NULL)
8036 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8037 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8038 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8039 FALSE, FALSE, TRUE));
e7d1c40c 8040 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8041 {
8042 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8043
8044 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8045 FALSE, FALSE, TRUE);
8046 if (opt != NULL)
8047 func_desc_adjust (opt, info);
8048 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8049 FALSE, FALSE, TRUE);
8050 if (opt_fd != NULL
8051 && (opt_fd->root.type == bfd_link_hash_defined
8052 || opt_fd->root.type == bfd_link_hash_defweak))
8053 {
8054 /* If glibc supports an optimized __tls_get_addr call stub,
8055 signalled by the presence of __tls_get_addr_opt, and we'll
8056 be calling __tls_get_addr via a plt call stub, then
8057 make __tls_get_addr point to __tls_get_addr_opt. */
8058 tga_fd = &htab->tls_get_addr_fd->elf;
8059 if (htab->elf.dynamic_sections_created
8060 && tga_fd != NULL
8061 && (tga_fd->type == STT_FUNC
8062 || tga_fd->needs_plt)
8063 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8064 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8065 && tga_fd->root.type == bfd_link_hash_undefweak)))
8066 {
8067 struct plt_entry *ent;
8068
8069 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8070 if (ent->plt.refcount > 0)
8071 break;
8072 if (ent != NULL)
8073 {
8074 tga_fd->root.type = bfd_link_hash_indirect;
8075 tga_fd->root.u.i.link = &opt_fd->root;
8076 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8077 if (opt_fd->dynindx != -1)
8078 {
8079 /* Use __tls_get_addr_opt in dynamic relocations. */
8080 opt_fd->dynindx = -1;
8081 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8082 opt_fd->dynstr_index);
8083 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8084 return NULL;
a7f2871e
AM		 8085 }
8086 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8087 tga = &htab->tls_get_addr->elf;
8088 if (opt != NULL && tga != NULL)
8089 {
8090 tga->root.type = bfd_link_hash_indirect;
8091 tga->root.u.i.link = &opt->root;
8092 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8093 _bfd_elf_link_hash_hide_symbol (info, opt,
8094 tga->forced_local);
8095 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8096 }
8097 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8098 htab->tls_get_addr_fd->is_func_descriptor = 1;
8099 if (htab->tls_get_addr != NULL)
8100 {
8101 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8102 htab->tls_get_addr->is_func = 1;
8103 }
8104 }
8105 }
8106 }
8107 else
e7d1c40c 8108 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8109 }
33c0ec9d 8110 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8111}
8387904d 8112
3a71aa26
AM		 8113/* Return TRUE iff REL is a branch reloc with a global symbol matching
8114 HASH1 or HASH2. */
8387904d 8115
3a71aa26
AM		 8116static bfd_boolean
8117branch_reloc_hash_match (const bfd *ibfd,
8118 const Elf_Internal_Rela *rel,
8119 const struct ppc_link_hash_entry *hash1,
8120 const struct ppc_link_hash_entry *hash2)
8121{
8122 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8123 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8124 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8125
e054468f 8126 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8127 {
3a71aa26
AM		 8128 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8129 struct elf_link_hash_entry *h;
8387904d 8130
3a71aa26 8131 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8132 h = elf_follow_link (h);
3a71aa26
AM		 8133 if (h == &hash1->elf || h == &hash2->elf)
8134 return TRUE;
a48ebf4d 8135 }
3a71aa26 8136 return FALSE;
951fd09b 8137}
411e1bfb 8138
951fd09b
AM		 8139/* Run through all the TLS relocs looking for optimization
8140 opportunities. The linker has been hacked (see ppc64elf.em) to do
8141 a preliminary section layout so that we know the TLS segment
8142 offsets. We can't optimize earlier because some optimizations need
8143 to know the tp offset, and we need to optimize before allocating
8144 dynamic relocations. */
8145
8146bfd_boolean
33c0ec9d 8147ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8148{
8149 bfd *ibfd;
8150 asection *sec;
8151 struct ppc_link_hash_table *htab;
663a1470 8152 unsigned char *toc_ref;
102890f0 8153 int pass;
951fd09b 8154
1d483afe 8155 if (info->relocatable || !info->executable)
411e1bfb
AM		 8156 return TRUE;
8157
951fd09b 8158 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8159 if (htab == NULL)
8160 return FALSE;
8161
663a1470
AM		 8162 /* Make two passes over the relocs. On the first pass, mark toc
8163 entries involved with tls relocs, and check that tls relocs
8164 involved in setting up a tls_get_addr call are indeed followed by
8165 such a call. If they are not, we can't do any tls optimization.
8166 On the second pass twiddle tls_mask flags to notify
8167 relocate_section that optimization can be done, and adjust got
8168 and plt refcounts. */
8169 toc_ref = NULL;
8170 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8171 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8172 {
8173 Elf_Internal_Sym *locsyms = NULL;
8174 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8175
102890f0
AM		 8176 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8177 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8178 {
8179 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8180 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8181
102890f0
AM		 8182 /* Read the relocations. */
8183 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8184 info->keep_memory);
8185 if (relstart == NULL)
2915c55b
JK		 8186 {
8187 free (toc_ref);
8188 return FALSE;
8189 }
411e1bfb 8190
102890f0
AM		 8191 relend = relstart + sec->reloc_count;
8192 for (rel = relstart; rel < relend; rel++)
8193 {
8194 enum elf_ppc64_reloc_type r_type;
8195 unsigned long r_symndx;
8196 struct elf_link_hash_entry *h;
8197 Elf_Internal_Sym *sym;
8198 asection *sym_sec;
f961d9dd
AM		 8199 unsigned char *tls_mask;
8200 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8201 bfd_vma value;
8202 bfd_boolean ok_tprel, is_local;
8203 long toc_ref_index = 0;
8204 int expecting_tls_get_addr = 0;
663a1470 8205 bfd_boolean ret = FALSE;
411e1bfb 8206
102890f0
AM		 8207 r_symndx = ELF64_R_SYM (rel->r_info);
8208 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8209 r_symndx, ibfd))
8210 {
8211 err_free_rel:
8212 if (elf_section_data (sec)->relocs != relstart)
8213 free (relstart);
8214 if (toc_ref != NULL)
8215 free (toc_ref);
8216 if (locsyms != NULL
0ffa91dd 8217 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8218 != (unsigned char *) locsyms))
8219 free (locsyms);
663a1470 8220 return ret;
102890f0 8221 }
411e1bfb 8222
102890f0
AM		 8223 if (h != NULL)
8224 {
766bc656
AM		 8225 if (h->root.type == bfd_link_hash_defined
8226 || h->root.type == bfd_link_hash_defweak)
8227 value = h->root.u.def.value;
8228 else if (h->root.type == bfd_link_hash_undefweak)
8229 value = 0;
8230 else
663a1470
AM		 8231 {
8232 found_tls_get_addr_arg = 0;
8233 continue;
8234 }
102890f0
AM		 8235 }
8236 else
8237 /* Symbols referenced by TLS relocs must be of type
8238 STT_TLS. So no need for .opd local sym adjust. */
8239 value = sym->st_value;
8240
8241 ok_tprel = FALSE;
8242 is_local = FALSE;
8243 if (h == NULL
8244 || !h->def_dynamic)
8245 {
8246 is_local = TRUE;
766bc656
AM		 8247 if (h != NULL
8248 && h->root.type == bfd_link_hash_undefweak)
8249 ok_tprel = TRUE;
8250 else
8251 {
8252 value += sym_sec->output_offset;
8253 value += sym_sec->output_section->vma;
8254 value -= htab->elf.tls_sec->vma;
8255 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8256 < (bfd_vma) 1 << 32);
8257 }
102890f0 8258 }
951fd09b 8259
102890f0 8260 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8261 /* If this section has old-style __tls_get_addr calls
8262 without marker relocs, then check that each
8263 __tls_get_addr call reloc is preceded by a reloc
8264 that conceivably belongs to the __tls_get_addr arg
8265 setup insn. If we don't find matching arg setup
8266 relocs, don't do any tls optimization. */
8267 if (pass == 0
8268 && sec->has_tls_get_addr_call
8269 && h != NULL
8270 && (h == &htab->tls_get_addr->elf
8271 || h == &htab->tls_get_addr_fd->elf)
8272 && !found_tls_get_addr_arg
8273 && is_branch_reloc (r_type))
8274 {
25f53a85 8275 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8276 "TLS optimization disabled\n"),
8277 ibfd, sec, rel->r_offset);
8278 ret = TRUE;
8279 goto err_free_rel;
8280 }
8281
8282 found_tls_get_addr_arg = 0;
102890f0
AM		 8283 switch (r_type)
8284 {
8285 case R_PPC64_GOT_TLSLD16:
8286 case R_PPC64_GOT_TLSLD16_LO:
8287 expecting_tls_get_addr = 1;
663a1470 8288 found_tls_get_addr_arg = 1;
102890f0
AM		 8289 /* Fall thru */
8290
8291 case R_PPC64_GOT_TLSLD16_HI:
8292 case R_PPC64_GOT_TLSLD16_HA:
8293 /* These relocs should never be against a symbol
8294 defined in a shared lib. Leave them alone if
8295 that turns out to be the case. */
8296 if (!is_local)
8297 continue;
411e1bfb 8298
102890f0 8299 /* LD -> LE */
411e1bfb 8300 tls_set = 0;
102890f0
AM		 8301 tls_clear = TLS_LD;
8302 tls_type = TLS_TLS | TLS_LD;
8303 break;
411e1bfb 8304
102890f0
AM		 8305 case R_PPC64_GOT_TLSGD16:
8306 case R_PPC64_GOT_TLSGD16_LO:
8307 expecting_tls_get_addr = 1;
663a1470 8308 found_tls_get_addr_arg = 1;
102890f0
AM		 8309 /* Fall thru */
8310
8311 case R_PPC64_GOT_TLSGD16_HI:
8312 case R_PPC64_GOT_TLSGD16_HA:
8313 if (ok_tprel)
8314 /* GD -> LE */
411e1bfb 8315 tls_set = 0;
102890f0
AM		 8316 else
8317 /* GD -> IE */
8318 tls_set = TLS_TLS | TLS_TPRELGD;
8319 tls_clear = TLS_GD;
8320 tls_type = TLS_TLS | TLS_GD;
8321 break;
8322
8323 case R_PPC64_GOT_TPREL16_DS:
8324 case R_PPC64_GOT_TPREL16_LO_DS:
8325 case R_PPC64_GOT_TPREL16_HI:
8326 case R_PPC64_GOT_TPREL16_HA:
8327 if (ok_tprel)
8328 {
8329 /* IE -> LE */
8330 tls_set = 0;
8331 tls_clear = TLS_TPREL;
8332 tls_type = TLS_TLS | TLS_TPREL;
8333 break;
8334 }
411e1bfb
AM		 8335 continue;
8336
727fc41e
AM		 8337 case R_PPC64_TLSGD:
8338 case R_PPC64_TLSLD:
663a1470
AM		 8339 found_tls_get_addr_arg = 1;
8340 /* Fall thru */
8341
8342 case R_PPC64_TLS:
8343 case R_PPC64_TOC16:
8344 case R_PPC64_TOC16_LO:
102890f0
AM		 8345 if (sym_sec == NULL || sym_sec != toc)
8346 continue;
8347
8348 /* Mark this toc entry as referenced by a TLS
8349 code sequence. We can do that now in the
8350 case of R_PPC64_TLS, and after checking for
8351 tls_get_addr for the TOC16 relocs. */
8352 if (toc_ref == NULL)
663a1470
AM		 8353 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8354 if (toc_ref == NULL)
8355 goto err_free_rel;
8356
102890f0
AM		 8357 if (h != NULL)
8358 value = h->root.u.def.value;
8359 else
8360 value = sym->st_value;
8361 value += rel->r_addend;
73242275
AM		 8362 if (value % 8 != 0)
8363 continue;
8364 BFD_ASSERT (value < toc->size
8365 && toc->output_offset % 8 == 0);
663a1470 8366 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8367 if (r_type == R_PPC64_TLS
8368 || r_type == R_PPC64_TLSGD
8369 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8370 {
8371 toc_ref[toc_ref_index] = 1;
8372 continue;
8373 }
8374
8375 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8376 continue;
8377
8378 tls_set = 0;
8379 tls_clear = 0;
8380 expecting_tls_get_addr = 2;
8381 break;
8382
8383 case R_PPC64_TPREL64:
8384 if (pass == 0
8385 || sec != toc
8386 || toc_ref == NULL
663a1470 8387 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8388 continue;
8389 if (ok_tprel)
8390 {
8391 /* IE -> LE */
8392 tls_set = TLS_EXPLICIT;
8393 tls_clear = TLS_TPREL;
8394 break;
8395 }
8396 continue;
8397
8398 case R_PPC64_DTPMOD64:
8399 if (pass == 0
8400 || sec != toc
8401 || toc_ref == NULL
663a1470 8402 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8403 continue;
8404 if (rel + 1 < relend
8405 && (rel[1].r_info
8406 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8407 && rel[1].r_offset == rel->r_offset + 8)
8408 {
8409 if (ok_tprel)
8410 /* GD -> LE */
8411 tls_set = TLS_EXPLICIT | TLS_GD;
8412 else
8413 /* GD -> IE */
8414 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8415 tls_clear = TLS_GD;
8416 }
8417 else
8418 {
8419 if (!is_local)
8420 continue;
8421
8422 /* LD -> LE */
8423 tls_set = TLS_EXPLICIT;
8424 tls_clear = TLS_LD;
8425 }
8426 break;
8427
8428 default:
8429 continue;
8430 }
8431
8432 if (pass == 0)
8433 {
727fc41e
AM		 8434 if (!expecting_tls_get_addr
8435 || !sec->has_tls_get_addr_call)
102890f0
AM		 8436 continue;
8437
3a71aa26
AM		 8438 if (rel + 1 < relend
8439 && branch_reloc_hash_match (ibfd, rel + 1,
8440 htab->tls_get_addr,
8441 htab->tls_get_addr_fd))
102890f0 8442 {
3a71aa26 8443 if (expecting_tls_get_addr == 2)
102890f0 8444 {
3a71aa26 8445 /* Check for toc tls entries. */
f961d9dd 8446 unsigned char *toc_tls;
3a71aa26
AM		 8447 int retval;
8448
8449 retval = get_tls_mask (&toc_tls, NULL, NULL,
8450 &locsyms,
8451 rel, ibfd);
8452 if (retval == 0)
8453 goto err_free_rel;
663a1470
AM		 8454 if (toc_tls != NULL)
8455 {
8456 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8457 found_tls_get_addr_arg = 1;
8458 if (retval > 1)
8459 toc_ref[toc_ref_index] = 1;
8460 }
102890f0 8461 }
3a71aa26 8462 continue;
102890f0
AM		 8463 }
8464
8465 if (expecting_tls_get_addr != 1)
8466 continue;
8467
8468 /* Uh oh, we didn't find the expected call. We
8469 could just mark this symbol to exclude it
8470 from tls optimization but it's safer to skip
663a1470 8471 the entire optimization. */
25f53a85 8472 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8473 "TLS optimization disabled\n"),
8474 ibfd, sec, rel->r_offset);
8475 ret = TRUE;
8476 goto err_free_rel;
102890f0
AM		 8477 }
8478
85f7a9cb 8479 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8480 {
8481 struct plt_entry *ent;
8482 for (ent = htab->tls_get_addr->elf.plt.plist;
8483 ent != NULL;
8484 ent = ent->next)
8485 if (ent->addend == 0)
411e1bfb 8486 {
102890f0 8487 if (ent->plt.refcount > 0)
30038c59 8488 {
102890f0
AM		 8489 ent->plt.refcount -= 1;
8490 expecting_tls_get_addr = 0;
30038c59 8491 }
102890f0 8492 break;
411e1bfb 8493 }
102890f0 8494 }
411e1bfb 8495
85f7a9cb 8496 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8497 {
8498 struct plt_entry *ent;
8499 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8500 ent != NULL;
8501 ent = ent->next)
8502 if (ent->addend == 0)
411e1bfb 8503 {
102890f0
AM		 8504 if (ent->plt.refcount > 0)
8505 ent->plt.refcount -= 1;
8506 break;
411e1bfb 8507 }
102890f0 8508 }
411e1bfb 8509
102890f0 8510 if (tls_clear == 0)
30038c59
AM		 8511 continue;
8512
102890f0
AM		 8513 if ((tls_set & TLS_EXPLICIT) == 0)
8514 {
8515 struct got_entry *ent;
411e1bfb 8516
102890f0
AM		 8517 /* Adjust got entry for this reloc. */
8518 if (h != NULL)
8519 ent = h->got.glist;
8520 else
8521 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8522
102890f0
AM		 8523 for (; ent != NULL; ent = ent->next)
8524 if (ent->addend == rel->r_addend
8525 && ent->owner == ibfd
8526 && ent->tls_type == tls_type)
8527 break;
8528 if (ent == NULL)
8529 abort ();
411e1bfb 8530
102890f0
AM		 8531 if (tls_set == 0)
8532 {
8533 /* We managed to get rid of a got entry. */
8534 if (ent->got.refcount > 0)
8535 ent->got.refcount -= 1;
8536 }
8537 }
8538 else
8539 {
8540 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8541 we'll lose one or two dyn relocs. */
8542 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8543 NULL, h, sym))
102890f0 8544 return FALSE;
411e1bfb 8545
102890f0
AM		 8546 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8547 {
8548 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8549 NULL, h, sym))
102890f0
AM		 8550 return FALSE;
8551 }
8552 }
411e1bfb 8553
102890f0
AM		 8554 *tls_mask |= tls_set;
8555 *tls_mask &= ~tls_clear;
8556 }
8c1d1bb8 8557
102890f0
AM		 8558 if (elf_section_data (sec)->relocs != relstart)
8559 free (relstart);
8560 }
411e1bfb 8561
663a1470
AM		 8562 if (locsyms != NULL
8563 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8564 {
8565 if (!info->keep_memory)
8566 free (locsyms);
8567 else
8568 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8569 }
8570 }
411e1bfb 8571
663a1470
AM		 8572 if (toc_ref != NULL)
8573 free (toc_ref);
b34976b6 8574 return TRUE;
1e2f5b6e 8575}
b34976b6 8576
c5614fa4
AM		 8577/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8578 the values of any global symbols in a toc section that has been
8579 edited. Globals in toc sections should be a rarity, so this function
8580 sets a flag if any are found in toc sections other than the one just
8581 edited, so that futher hash table traversals can be avoided. */
8582
8583struct adjust_toc_info
8584{
8585 asection *toc;
8586 unsigned long *skip;
8587 bfd_boolean global_toc_syms;
8588};
8589
ba761f19
AM		 8590enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8591
c5614fa4
AM		 8592static bfd_boolean
8593adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8594{
8595 struct ppc_link_hash_entry *eh;
8596 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8597 unsigned long i;
c5614fa4 8598
c5614fa4
AM		 8599 if (h->root.type != bfd_link_hash_defined
8600 && h->root.type != bfd_link_hash_defweak)
8601 return TRUE;
8602
8603 eh = (struct ppc_link_hash_entry *) h;
8604 if (eh->adjust_done)
8605 return TRUE;
8606
8607 if (eh->elf.root.u.def.section == toc_inf->toc)
8608 {
854b41e7
AM		 8609 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8610 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8611 else
854b41e7
AM		 8612 i = eh->elf.root.u.def.value >> 3;
8613
ba761f19 8614 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8615 {
8616 (*_bfd_error_handler)
854b41e7
AM		 8617 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8618 do
8619 ++i;
ba761f19 8620 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8621 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8622 }
854b41e7
AM		 8623
8624 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8625 eh->adjust_done = 1;
8626 }
8627 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8628 toc_inf->global_toc_syms = TRUE;
8629
8630 return TRUE;
8631}
8632
560c8763
AM		 8633/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8634
8635static bfd_boolean
8636ok_lo_toc_insn (unsigned int insn)
8637{
8638 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8639 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8640 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8641 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8642 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8643 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8644 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8645 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8646 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8647 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8648 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8649 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8650 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8651 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8652 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8653 && (insn & 3) != 1)
8654 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8655 && ((insn & 3) == 0 || (insn & 3) == 3))
8656 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8657}
8658
c5614fa4
AM		 8659/* Examine all relocs referencing .toc sections in order to remove
8660 unused .toc entries. */
8661
8662bfd_boolean
33c0ec9d 8663ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8664{
8665 bfd *ibfd;
8666 struct adjust_toc_info toc_inf;
67f0cbdb 8667 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8668
67f0cbdb 8669 htab->do_toc_opt = 1;
c5614fa4 8670 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8671 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8672 {
8673 asection *toc, *sec;
8674 Elf_Internal_Shdr *symtab_hdr;
8675 Elf_Internal_Sym *local_syms;
425b145b 8676 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8677 unsigned long *skip, *drop;
8678 unsigned char *used;
8679 unsigned char *keep, last, some_unused;
8680
854b41e7
AM		 8681 if (!is_ppc64_elf (ibfd))
8682 continue;
8683
c5614fa4
AM		 8684 toc = bfd_get_section_by_name (ibfd, ".toc");
8685 if (toc == NULL
92b7a70f 8686 || toc->size == 0
dbaa2011
AM		 8687 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8688 || discarded_section (toc))
c5614fa4
AM		 8689 continue;
8690
425b145b 8691 toc_relocs = NULL;
c5614fa4 8692 local_syms = NULL;
0ffa91dd 8693 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8694
8695 /* Look at sections dropped from the final link. */
8696 skip = NULL;
8697 relstart = NULL;
8698 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8699 {
8700 if (sec->reloc_count == 0
dbaa2011 8701 || !discarded_section (sec)
c5614fa4
AM		 8702 || get_opd_info (sec)
8703 || (sec->flags & SEC_ALLOC) == 0
8704 || (sec->flags & SEC_DEBUGGING) != 0)
8705 continue;
8706
8707 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8708 if (relstart == NULL)
8709 goto error_ret;
8710
8711 /* Run through the relocs to see which toc entries might be
8712 unused. */
8713 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8714 {
8715 enum elf_ppc64_reloc_type r_type;
8716 unsigned long r_symndx;
8717 asection *sym_sec;
8718 struct elf_link_hash_entry *h;
8719 Elf_Internal_Sym *sym;
8720 bfd_vma val;
8721
8722 r_type = ELF64_R_TYPE (rel->r_info);
8723 switch (r_type)
8724 {
8725 default:
8726 continue;
8727
8728 case R_PPC64_TOC16:
8729 case R_PPC64_TOC16_LO:
8730 case R_PPC64_TOC16_HI:
8731 case R_PPC64_TOC16_HA:
8732 case R_PPC64_TOC16_DS:
8733 case R_PPC64_TOC16_LO_DS:
8734 break;
8735 }
8736
8737 r_symndx = ELF64_R_SYM (rel->r_info);
8738 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8739 r_symndx, ibfd))
8740 goto error_ret;
8741
8742 if (sym_sec != toc)
8743 continue;
8744
8745 if (h != NULL)
8746 val = h->root.u.def.value;
8747 else
8748 val = sym->st_value;
8749 val += rel->r_addend;
8750
8751 if (val >= toc->size)
8752 continue;
8753
8754 /* Anything in the toc ought to be aligned to 8 bytes.
8755 If not, don't mark as unused. */
8756 if (val & 7)
8757 continue;
8758
8759 if (skip == NULL)
8760 {
854b41e7 8761 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8762 if (skip == NULL)
8763 goto error_ret;
8764 }
8765
ba761f19 8766 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8767 }
8768
8769 if (elf_section_data (sec)->relocs != relstart)
8770 free (relstart);
8771 }
8772
ba761f19
AM		 8773 /* For largetoc loads of address constants, we can convert
8774 . addis rx,2,addr@got@ha
8775 . ld ry,addr@got@l(rx)
8776 to
8777 . addis rx,2,addr@toc@ha
8778 . addi ry,rx,addr@toc@l
8779 when addr is within 2G of the toc pointer. This then means
8780 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8781
ba761f19
AM		 8782 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8783 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8784 && toc->reloc_count != 0)
8785 {
8786 /* Read toc relocs. */
425b145b
AM		 8787 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8788 info->keep_memory);
8789 if (toc_relocs == NULL)
ba761f19
AM		 8790 goto error_ret;
8791
425b145b 8792 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8793 {
8794 enum elf_ppc64_reloc_type r_type;
8795 unsigned long r_symndx;
8796 asection *sym_sec;
8797 struct elf_link_hash_entry *h;
8798 Elf_Internal_Sym *sym;
8799 bfd_vma val, addr;
8800
8801 r_type = ELF64_R_TYPE (rel->r_info);
8802 if (r_type != R_PPC64_ADDR64)
8803 continue;
8804
8805 r_symndx = ELF64_R_SYM (rel->r_info);
8806 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8807 r_symndx, ibfd))
8808 goto error_ret;
8809
425b145b 8810 if (sym_sec == NULL
dbaa2011 8811 || discarded_section (sym_sec))
425b145b
AM		 8812 continue;
8813
afe397ea 8814 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8815 continue;
8816
8817 if (h != NULL)
bddc25c9
AM		 8818 {
8819 if (h->type == STT_GNU_IFUNC)
8820 continue;
8821 val = h->root.u.def.value;
8822 }
ba761f19 8823 else
bddc25c9
AM		 8824 {
8825 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8826 continue;
8827 val = sym->st_value;
8828 }
ba761f19
AM		 8829 val += rel->r_addend;
8830 val += sym_sec->output_section->vma + sym_sec->output_offset;
8831
8832 /* We don't yet know the exact toc pointer value, but we
8833 know it will be somewhere in the toc section. Don't
8834 optimize if the difference from any possible toc
8835 pointer is outside [ff..f80008000, 7fff7fff]. */
8836 addr = toc->output_section->vma + TOC_BASE_OFF;
8837 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8838 continue;
8839
8840 addr = toc->output_section->vma + toc->output_section->rawsize;
8841 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8842 continue;
8843
8844 if (skip == NULL)
8845 {
8846 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8847 if (skip == NULL)
8848 goto error_ret;
8849 }
8850
8851 skip[rel->r_offset >> 3]
425b145b 8852 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8853 }
ba761f19
AM		 8854 }
8855
c5614fa4
AM		 8856 if (skip == NULL)
8857 continue;
8858
8859 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8860 if (used == NULL)
8861 {
8862 error_ret:
8863 if (local_syms != NULL
8864 && symtab_hdr->contents != (unsigned char *) local_syms)
8865 free (local_syms);
8866 if (sec != NULL
8867 && relstart != NULL
8868 && elf_section_data (sec)->relocs != relstart)
8869 free (relstart);
425b145b
AM		 8870 if (toc_relocs != NULL
8871 && elf_section_data (toc)->relocs != toc_relocs)
8872 free (toc_relocs);
c5614fa4
AM		 8873 if (skip != NULL)
8874 free (skip);
8875 return FALSE;
8876 }
8877
30038c59
AM		 8878 /* Now check all kept sections that might reference the toc.
8879 Check the toc itself last. */
8880 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8881 : ibfd->sections);
c5614fa4 8882 sec != NULL;
c5614fa4 8883 sec = (sec == toc ? NULL
c5614fa4 8884 : sec->next == NULL ? toc
30038c59 8885 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8886 : sec->next))
8887 {
8888 int repeat;
8889
8890 if (sec->reloc_count == 0
dbaa2011 8891 || discarded_section (sec)
c5614fa4
AM		 8892 || get_opd_info (sec)
8893 || (sec->flags & SEC_ALLOC) == 0
8894 || (sec->flags & SEC_DEBUGGING) != 0)
8895 continue;
8896
854b41e7
AM		 8897 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8898 info->keep_memory);
c5614fa4 8899 if (relstart == NULL)
2915c55b
JK		 8900 {
8901 free (used);
8902 goto error_ret;
8903 }
c5614fa4
AM		 8904
8905 /* Mark toc entries referenced as used. */
c5614fa4 8906 do
d4f1ee75
AM		 8907 {
8908 repeat = 0;
8909 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8910 {
8911 enum elf_ppc64_reloc_type r_type;
8912 unsigned long r_symndx;
8913 asection *sym_sec;
8914 struct elf_link_hash_entry *h;
8915 Elf_Internal_Sym *sym;
8916 bfd_vma val;
8917 enum {no_check, check_lo, check_ha} insn_check;
98528052 8918
d4f1ee75
AM		 8919 r_type = ELF64_R_TYPE (rel->r_info);
8920 switch (r_type)
8921 {
8922 default:
8923 insn_check = no_check;
8924 break;
98528052 8925
d4f1ee75
AM		 8926 case R_PPC64_GOT_TLSLD16_HA:
8927 case R_PPC64_GOT_TLSGD16_HA:
8928 case R_PPC64_GOT_TPREL16_HA:
8929 case R_PPC64_GOT_DTPREL16_HA:
8930 case R_PPC64_GOT16_HA:
8931 case R_PPC64_TOC16_HA:
8932 insn_check = check_ha;
8933 break;
98528052 8934
d4f1ee75
AM		 8935 case R_PPC64_GOT_TLSLD16_LO:
8936 case R_PPC64_GOT_TLSGD16_LO:
8937 case R_PPC64_GOT_TPREL16_LO_DS:
8938 case R_PPC64_GOT_DTPREL16_LO_DS:
8939 case R_PPC64_GOT16_LO:
8940 case R_PPC64_GOT16_LO_DS:
8941 case R_PPC64_TOC16_LO:
8942 case R_PPC64_TOC16_LO_DS:
8943 insn_check = check_lo;
8944 break;
8945 }
560c8763 8946
d4f1ee75
AM		 8947 if (insn_check != no_check)
8948 {
8949 bfd_vma off = rel->r_offset & ~3;
8950 unsigned char buf[4];
8951 unsigned int insn;
c5614fa4 8952
d4f1ee75
AM		 8953 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8954 {
8955 free (used);
8956 goto error_ret;
8957 }
8958 insn = bfd_get_32 (ibfd, buf);
8959 if (insn_check == check_lo
8960 ? !ok_lo_toc_insn (insn)
8961 : ((insn & ((0x3f << 26) | 0x1f << 16))
8962 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8963 {
8964 char str[12];
8965
8966 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8967 sprintf (str, "%#08x", insn);
8968 info->callbacks->einfo
8969 (_("%P: %H: toc optimization is not supported for"
8970 " %s instruction.\n"),
8971 ibfd, sec, rel->r_offset & ~3, str);
8972 }
8973 }
c5614fa4 8974
d4f1ee75
AM		 8975 switch (r_type)
8976 {
8977 case R_PPC64_TOC16:
8978 case R_PPC64_TOC16_LO:
8979 case R_PPC64_TOC16_HI:
8980 case R_PPC64_TOC16_HA:
8981 case R_PPC64_TOC16_DS:
8982 case R_PPC64_TOC16_LO_DS:
8983 /* In case we're taking addresses of toc entries. */
8984 case R_PPC64_ADDR64:
8985 break;
c5614fa4 8986
d4f1ee75
AM		 8987 default:
8988 continue;
8989 }
c5614fa4 8990
d4f1ee75
AM		 8991 r_symndx = ELF64_R_SYM (rel->r_info);
8992 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8993 r_symndx, ibfd))
8994 {
8995 free (used);
8996 goto error_ret;
8997 }
c5614fa4 8998
d4f1ee75
AM		 8999 if (sym_sec != toc)
9000 continue;
c5614fa4 9001
d4f1ee75
AM		 9002 if (h != NULL)
9003 val = h->root.u.def.value;
9004 else
9005 val = sym->st_value;
9006 val += rel->r_addend;
ba761f19 9007
d4f1ee75
AM		 9008 if (val >= toc->size)
9009 continue;
ba761f19 9010
d4f1ee75
AM		 9011 if ((skip[val >> 3] & can_optimize) != 0)
9012 {
9013 bfd_vma off;
9014 unsigned char opc;
9015
9016 switch (r_type)
9017 {
9018 case R_PPC64_TOC16_HA:
ba761f19 9019 break;
ba761f19 9020
d4f1ee75
AM		 9021 case R_PPC64_TOC16_LO_DS:
9022 off = rel->r_offset;
9023 off += (bfd_big_endian (ibfd) ? -2 : 3);
9024 if (!bfd_get_section_contents (ibfd, sec, &opc,
9025 off, 1))
9026 {
9027 free (used);
9028 goto error_ret;
9029 }
9030 if ((opc & (0x3f << 2)) == (58u << 2))
9031 break;
9032 /* Fall thru */
ba761f19 9033
d4f1ee75
AM		 9034 default:
9035 /* Wrong sort of reloc, or not a ld. We may
9036 as well clear ref_from_discarded too. */
9037 skip[val >> 3] = 0;
9038 }
9039 }
9040
9041 if (sec != toc)
9042 used[val >> 3] = 1;
9043 /* For the toc section, we only mark as used if this
9044 entry itself isn't unused. */
9045 else if ((used[rel->r_offset >> 3]
9046 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9047 && !used[val >> 3])
9048 {
9049 /* Do all the relocs again, to catch reference
9050 chains. */
9051 repeat = 1;
9052 used[val >> 3] = 1;
9053 }
9054 }
9055 }
c5614fa4 9056 while (repeat);
854b41e7
AM		 9057
9058 if (elf_section_data (sec)->relocs != relstart)
9059 free (relstart);
c5614fa4
AM		 9060 }
9061
9062 /* Merge the used and skip arrays. Assume that TOC
9063 doublewords not appearing as either used or unused belong
9064 to to an entry more than one doubleword in size. */
9065 for (drop = skip, keep = used, last = 0, some_unused = 0;
9066 drop < skip + (toc->size + 7) / 8;
9067 ++drop, ++keep)
9068 {
9069 if (*keep)
9070 {
ba761f19
AM		 9071 *drop &= ~ref_from_discarded;
9072 if ((*drop & can_optimize) != 0)
9073 some_unused = 1;
c5614fa4
AM		 9074 last = 0;
9075 }
b140b010 9076 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9077 {
9078 some_unused = 1;
ba761f19 9079 last = ref_from_discarded;
c5614fa4
AM		 9080 }
9081 else
9082 *drop = last;
9083 }
9084
9085 free (used);
9086
9087 if (some_unused)
9088 {
9089 bfd_byte *contents, *src;
9090 unsigned long off;
d62b3684 9091 Elf_Internal_Sym *sym;
ba761f19 9092 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9093
9094 /* Shuffle the toc contents, and at the same time convert the
9095 skip array from booleans into offsets. */
9096 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9097 goto error_ret;
9098
9099 elf_section_data (toc)->this_hdr.contents = contents;
9100
9101 for (src = contents, off = 0, drop = skip;
9102 src < contents + toc->size;
9103 src += 8, ++drop)
9104 {
ba761f19
AM		 9105 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9106 off += 8;
c5614fa4
AM		 9107 else if (off != 0)
9108 {
9109 *drop = off;
9110 memcpy (src - off, src, 8);
9111 }
9112 }
854b41e7 9113 *drop = off;
c5614fa4
AM		 9114 toc->rawsize = toc->size;
9115 toc->size = src - contents - off;
9116
ba761f19
AM		 9117 /* Adjust addends for relocs against the toc section sym,
9118 and optimize any accesses we can. */
c5614fa4
AM		 9119 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9120 {
9121 if (sec->reloc_count == 0
dbaa2011 9122 || discarded_section (sec))
c5614fa4
AM		 9123 continue;
9124
9125 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9126 info->keep_memory);
c5614fa4
AM		 9127 if (relstart == NULL)
9128 goto error_ret;
9129
9130 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9131 {
9132 enum elf_ppc64_reloc_type r_type;
9133 unsigned long r_symndx;
9134 asection *sym_sec;
9135 struct elf_link_hash_entry *h;
854b41e7 9136 bfd_vma val;
c5614fa4
AM		 9137
9138 r_type = ELF64_R_TYPE (rel->r_info);
9139 switch (r_type)
9140 {
9141 default:
9142 continue;
9143
9144 case R_PPC64_TOC16:
9145 case R_PPC64_TOC16_LO:
9146 case R_PPC64_TOC16_HI:
9147 case R_PPC64_TOC16_HA:
9148 case R_PPC64_TOC16_DS:
9149 case R_PPC64_TOC16_LO_DS:
9150 case R_PPC64_ADDR64:
9151 break;
9152 }
9153
9154 r_symndx = ELF64_R_SYM (rel->r_info);
9155 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9156 r_symndx, ibfd))
9157 goto error_ret;
9158
ba761f19 9159 if (sym_sec != toc)
c5614fa4
AM		 9160 continue;
9161
ba761f19
AM		 9162 if (h != NULL)
9163 val = h->root.u.def.value;
9164 else
9165 {
9166 val = sym->st_value;
9167 if (val != 0)
9168 local_toc_syms = TRUE;
9169 }
9170
9171 val += rel->r_addend;
854b41e7
AM		 9172
9173 if (val > toc->rawsize)
9174 val = toc->rawsize;
ba761f19
AM		 9175 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9176 continue;
9177 else if ((skip[val >> 3] & can_optimize) != 0)
9178 {
9179 Elf_Internal_Rela *tocrel
425b145b 9180 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9181 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9182
9183 switch (r_type)
9184 {
9185 case R_PPC64_TOC16_HA:
9186 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9187 break;
9188
9189 case R_PPC64_TOC16_LO_DS:
9190 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9191 break;
9192
9193 default:
28942f62
AM		 9194 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9195 ppc_howto_init ();
b140b010 9196 info->callbacks->einfo
bc30df16 9197 (_("%P: %H: %s references "
b140b010
AM		 9198 "optimized away TOC entry\n"),
9199 ibfd, sec, rel->r_offset,
9200 ppc64_elf_howto_table[r_type]->name);
9201 bfd_set_error (bfd_error_bad_value);
9202 goto error_ret;
ba761f19
AM		 9203 }
9204 rel->r_addend = tocrel->r_addend;
9205 elf_section_data (sec)->relocs = relstart;
9206 continue;
9207 }
9208
9209 if (h != NULL || sym->st_value != 0)
9210 continue;
854b41e7
AM		 9211
9212 rel->r_addend -= skip[val >> 3];
9213 elf_section_data (sec)->relocs = relstart;
c5614fa4 9214 }
854b41e7
AM		 9215
9216 if (elf_section_data (sec)->relocs != relstart)
9217 free (relstart);
c5614fa4
AM		 9218 }
9219
9220 /* We shouldn't have local or global symbols defined in the TOC,
9221 but handle them anyway. */
df22d223
AM		 9222 if (local_syms != NULL)
9223 for (sym = local_syms;
9224 sym < local_syms + symtab_hdr->sh_info;
9225 ++sym)
9226 if (sym->st_value != 0
9227 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9228 {
9229 unsigned long i;
854b41e7 9230
df22d223
AM		 9231 if (sym->st_value > toc->rawsize)
9232 i = toc->rawsize >> 3;
9233 else
9234 i = sym->st_value >> 3;
854b41e7 9235
df22d223
AM		 9236 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9237 {
9238 if (local_toc_syms)
9239 (*_bfd_error_handler)
9240 (_("%s defined on removed toc entry"),
9241 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9242 do
9243 ++i;
9244 while ((skip[i] & (ref_from_discarded | can_optimize)));
9245 sym->st_value = (bfd_vma) i << 3;
9246 }
d62b3684 9247
df22d223
AM		 9248 sym->st_value -= skip[i];
9249 symtab_hdr->contents = (unsigned char *) local_syms;
9250 }
c5614fa4 9251
854b41e7 9252 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9253 if (toc_inf.global_toc_syms)
9254 {
9255 toc_inf.toc = toc;
9256 toc_inf.skip = skip;
9257 toc_inf.global_toc_syms = FALSE;
9258 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9259 &toc_inf);
9260 }
854b41e7
AM		 9261
9262 if (toc->reloc_count != 0)
9263 {
d4730f92 9264 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9265 Elf_Internal_Rela *wrel;
9266 bfd_size_type sz;
9267
854b41e7 9268 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9269 if (toc_relocs == NULL)
9270 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9271 info->keep_memory);
9272 if (toc_relocs == NULL)
9273 goto error_ret;
9274
425b145b
AM		 9275 wrel = toc_relocs;
9276 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9277 if ((skip[rel->r_offset >> 3]
9278 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9279 {
9280 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9281 wrel->r_info = rel->r_info;
9282 wrel->r_addend = rel->r_addend;
9283 ++wrel;
9284 }
9285 else if (!dec_dynrel_count (rel->r_info, toc, info,
9286 &local_syms, NULL, NULL))
9287 goto error_ret;
9288
425b145b
AM		 9289 elf_section_data (toc)->relocs = toc_relocs;
9290 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9291 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9292 sz = rel_hdr->sh_entsize;
9293 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9294 }
c5614fa4 9295 }
28be611c
AM		 9296 else if (toc_relocs != NULL
9297 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9298 free (toc_relocs);
c5614fa4
AM		 9299
9300 if (local_syms != NULL
9301 && symtab_hdr->contents != (unsigned char *) local_syms)
9302 {
9303 if (!info->keep_memory)
9304 free (local_syms);
9305 else
9306 symtab_hdr->contents = (unsigned char *) local_syms;
9307 }
9308 free (skip);
9309 }
9310
9311 return TRUE;
9312}
9313
1bbe0902
AM		 9314/* Return true iff input section I references the TOC using
9315 instructions limited to +/-32k offsets. */
9316
9317bfd_boolean
9318ppc64_elf_has_small_toc_reloc (asection *i)
9319{
9320 return (is_ppc64_elf (i->owner)
9321 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9322}
9323
927be08e
AM		 9324/* Allocate space for one GOT entry. */
9325
9326static void
9327allocate_got (struct elf_link_hash_entry *h,
9328 struct bfd_link_info *info,
9329 struct got_entry *gent)
9330{
9331 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9332 bfd_boolean dyn;
9333 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9334 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9335 ? 16 : 8);
9336 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9337 ? 2 : 1) * sizeof (Elf64_External_Rela);
9338 asection *got = ppc64_elf_tdata (gent->owner)->got;
9339
9340 gent->got.offset = got->size;
9341 got->size += entsize;
9342
9343 dyn = htab->elf.dynamic_sections_created;
19e08130 9344 if (h->type == STT_GNU_IFUNC)
927be08e 9345 {
33e44f2e 9346 htab->elf.irelplt->size += rentsize;
19e08130 9347 htab->got_reli_size += rentsize;
927be08e 9348 }
19e08130
AM		 9349 else if ((info->shared
9350 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9351 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9352 || h->root.type != bfd_link_hash_undefweak))
927be08e 9353 {
19e08130 9354 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9355 relgot->size += rentsize;
927be08e
AM		 9356 }
9357}
9358
7865406b
AM		 9359/* This function merges got entries in the same toc group. */
9360
9361static void
9362merge_got_entries (struct got_entry **pent)
9363{
9364 struct got_entry *ent, *ent2;
9365
9366 for (ent = *pent; ent != NULL; ent = ent->next)
9367 if (!ent->is_indirect)
9368 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9369 if (!ent2->is_indirect
9370 && ent2->addend == ent->addend
9371 && ent2->tls_type == ent->tls_type
9372 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9373 {
9374 ent2->is_indirect = TRUE;
9375 ent2->got.ent = ent;
9376 }
9377}
9378
65f38f15
AM		 9379/* Allocate space in .plt, .got and associated reloc sections for
9380 dynamic relocs. */
5bd4f169 9381
b34976b6 9382static bfd_boolean
4ce794b7 9383allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9384{
65f38f15
AM		 9385 struct bfd_link_info *info;
9386 struct ppc_link_hash_table *htab;
5bd4f169 9387 asection *s;
65f38f15 9388 struct ppc_link_hash_entry *eh;
6061a67d 9389 struct elf_dyn_relocs *p;
0b8bcf0d 9390 struct got_entry **pgent, *gent;
5bd4f169 9391
e92d460e 9392 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9393 return TRUE;
5bd4f169 9394
65f38f15
AM		 9395 info = (struct bfd_link_info *) inf;
9396 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9397 if (htab == NULL)
9398 return FALSE;
5bd4f169 9399
e054468f
AM		 9400 if ((htab->elf.dynamic_sections_created
9401 && h->dynindx != -1
9402 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9403 || h->type == STT_GNU_IFUNC)
5bd4f169 9404 {
411e1bfb
AM		 9405 struct plt_entry *pent;
9406 bfd_boolean doneone = FALSE;
9407 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9408 if (pent->plt.refcount > 0)
9409 {
25f23106
AM		 9410 if (!htab->elf.dynamic_sections_created
9411 || h->dynindx == -1)
e054468f 9412 {
33e44f2e 9413 s = htab->elf.iplt;
e054468f 9414 pent->plt.offset = s->size;
b9e5796b 9415 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9416 s = htab->elf.irelplt;
e054468f
AM		 9417 }
9418 else
9419 {
9420 /* If this is the first .plt entry, make room for the special
9421 first entry. */
33e44f2e 9422 s = htab->elf.splt;
e054468f 9423 if (s->size == 0)
b9e5796b 9424 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9425
9426 pent->plt.offset = s->size;
9427
9428 /* Make room for this entry. */
b9e5796b 9429 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9430
9431 /* Make room for the .glink code. */
9432 s = htab->glink;
9433 if (s->size == 0)
9434 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9435 if (htab->opd_abi)
9436 {
9437 /* We need bigger stubs past index 32767. */
9438 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9439 s->size += 4;
9440 s->size += 2*4;
9441 }
9442 else
e054468f 9443 s->size += 4;
e054468f
AM		 9444
9445 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9446 s = htab->elf.srelplt;
e054468f 9447 }
eea6121a 9448 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9449 doneone = TRUE;
9450 }
9451 else
9452 pent->plt.offset = (bfd_vma) -1;
9453 if (!doneone)
65f38f15 9454 {
411e1bfb 9455 h->plt.plist = NULL;
f5385ebf 9456 h->needs_plt = 0;
65f38f15
AM		 9457 }
9458 }
9459 else
9460 {
411e1bfb 9461 h->plt.plist = NULL;
f5385ebf 9462 h->needs_plt = 0;
65f38f15
AM		 9463 }
9464
951fd09b
AM		 9465 eh = (struct ppc_link_hash_entry *) h;
9466 /* Run through the TLS GD got entries first if we're changing them
9467 to TPREL. */
e7b938ca 9468 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9469 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9470 if (gent->got.refcount > 0
9471 && (gent->tls_type & TLS_GD) != 0)
9472 {
9473 /* This was a GD entry that has been converted to TPREL. If
9474 there happens to be a TPREL entry we can use that one. */
9475 struct got_entry *ent;
9476 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9477 if (ent->got.refcount > 0
9478 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9479 && ent->addend == gent->addend
9480 && ent->owner == gent->owner)
951fd09b
AM		 9481 {
9482 gent->got.refcount = 0;
9483 break;
9484 }
9485
9486 /* If not, then we'll be using our own TPREL entry. */
9487 if (gent->got.refcount != 0)
9488 gent->tls_type = TLS_TLS | TLS_TPREL;
9489 }
9490
7865406b
AM		 9491 /* Remove any list entry that won't generate a word in the GOT before
9492 we call merge_got_entries. Otherwise we risk merging to empty
9493 entries. */
0b8bcf0d
AM		 9494 pgent = &h->got.glist;
9495 while ((gent = *pgent) != NULL)
411e1bfb 9496 if (gent->got.refcount > 0)
7865406b
AM		 9497 {
9498 if ((gent->tls_type & TLS_LD) != 0
9499 && !h->def_dynamic)
9500 {
9501 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9502 *pgent = gent->next;
9503 }
9504 else
9505 pgent = &gent->next;
9506 }
9507 else
9508 *pgent = gent->next;
9509
9510 if (!htab->do_multi_toc)
9511 merge_got_entries (&h->got.glist);
9512
9513 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9514 if (!gent->is_indirect)
411e1bfb
AM		 9515 {
9516 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9517 Undefined weak syms won't yet be marked as dynamic,
9518 nor will all TLS symbols. */
411e1bfb 9519 if (h->dynindx == -1
b099ab9f 9520 && !h->forced_local
25f23106 9521 && h->type != STT_GNU_IFUNC
b099ab9f 9522 && htab->elf.dynamic_sections_created)
411e1bfb 9523 {
c152c796 9524 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9525 return FALSE;
9526 }
65f38f15 9527
0c8d6e5c 9528 if (!is_ppc64_elf (gent->owner))
927be08e 9529 abort ();
0ffa91dd 9530
927be08e 9531 allocate_got (h, info, gent);
411e1bfb 9532 }
65f38f15 9533
b099ab9f 9534 if (eh->dyn_relocs == NULL
25f23106 9535 || (!htab->elf.dynamic_sections_created
14b5f73f 9536 && h->type != STT_GNU_IFUNC))
b34976b6 9537 return TRUE;
65f38f15
AM		 9538
9539 /* In the shared -Bsymbolic case, discard space allocated for
9540 dynamic pc-relative relocs against symbols which turn out to be
9541 defined in regular objects. For the normal shared case, discard
9542 space for relocs that have become local due to symbol visibility
9543 changes. */
9544
9545 if (info->shared)
9546 {
9c7a29a3 9547 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9548 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9549 generated via assembly. We want calls to protected symbols to
9550 resolve directly to the function rather than going via the plt.
9551 If people want function pointer comparisons to work as expected
9552 then they should avoid writing weird assembly. */
09695f56 9553 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9554 {
6061a67d 9555 struct elf_dyn_relocs **pp;
65f38f15
AM		 9556
9557 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9558 {
65f38f15
AM		 9559 p->count -= p->pc_count;
9560 p->pc_count = 0;
9561 if (p->count == 0)
9562 *pp = p->next;
9563 else
9564 pp = &p->next;
5bd4f169 9565 }
65f38f15 9566 }
4e795f50
AM		 9567
9568 /* Also discard relocs on undefined weak syms with non-default
9569 visibility. */
cab87ef9
AM		 9570 if (eh->dyn_relocs != NULL
9571 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9572 {
9573 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9574 eh->dyn_relocs = NULL;
9575
9576 /* Make sure this symbol is output as a dynamic symbol.
9577 Undefined weak syms won't yet be marked as dynamic. */
9578 else if (h->dynindx == -1
9579 && !h->forced_local)
9580 {
9581 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9582 return FALSE;
9583 }
9584 }
65f38f15 9585 }
25f23106
AM		 9586 else if (h->type == STT_GNU_IFUNC)
9587 {
9588 if (!h->non_got_ref)
9589 eh->dyn_relocs = NULL;
9590 }
f4656909 9591 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9592 {
9593 /* For the non-shared case, discard space for relocs against
9594 symbols which turn out to need copy relocs or are not
9595 dynamic. */
9596
f5385ebf 9597 if (!h->non_got_ref
f5385ebf 9598 && !h->def_regular)
65f38f15
AM		 9599 {
9600 /* Make sure this symbol is output as a dynamic symbol.
9601 Undefined weak syms won't yet be marked as dynamic. */
9602 if (h->dynindx == -1
f5385ebf 9603 && !h->forced_local)
65f38f15 9604 {
c152c796 9605 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9606 return FALSE;
65f38f15
AM		 9607 }
9608
9609 /* If that succeeded, we know we'll be keeping all the
9610 relocs. */
9611 if (h->dynindx != -1)
9612 goto keep;
9613 }
9614
9615 eh->dyn_relocs = NULL;
9616
ec338859 9617 keep: ;
65f38f15
AM		 9618 }
9619
9620 /* Finally, allocate space. */
9621 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9622 {
9623 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9624 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9625 sreloc = htab->elf.irelplt;
eea6121a 9626 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9627 }
9628
b34976b6 9629 return TRUE;
65f38f15
AM		 9630}
9631
a345bc8d
AM		 9632/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9633 to set up space for global entry stubs. These are put in glink,
9634 after the branch table. */
65f38f15 9635
b34976b6 9636static bfd_boolean
a345bc8d 9637size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9638{
a345bc8d
AM		 9639 struct bfd_link_info *info;
9640 struct ppc_link_hash_table *htab;
9641 struct plt_entry *pent;
9642 asection *s;
65f38f15 9643
a345bc8d
AM		 9644 if (h->root.type == bfd_link_hash_indirect)
9645 return TRUE;
65f38f15 9646
a345bc8d
AM		 9647 if (!h->pointer_equality_needed)
9648 return TRUE;
65f38f15 9649
a345bc8d
AM		 9650 if (h->def_regular)
9651 return TRUE;
65f38f15 9652
a345bc8d
AM		 9653 info = inf;
9654 htab = ppc_hash_table (info);
9655 if (htab == NULL)
9656 return FALSE;
9657
9658 s = htab->glink;
9659 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9660 if (pent->plt.offset != (bfd_vma) -1
9661 && pent->addend == 0)
9662 {
afe397ea
AM		 9663 /* For ELFv2, if this symbol is not defined in a regular file
9664 and we are not generating a shared library or pie, then we
9665 need to define the symbol in the executable on a call stub.
9666 This is to avoid text relocations. */
a345bc8d 9667 s->size = (s->size + 15) & -16;
afe397ea
AM		 9668 h->root.u.def.section = s;
9669 h->root.u.def.value = s->size;
a345bc8d
AM		 9670 s->size += 16;
9671 break;
9672 }
9673 return TRUE;
9674}
9675
9676/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9677 read-only sections. */
9678
9679static bfd_boolean
9680maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9681{
9682 if (h->root.type == bfd_link_hash_indirect)
9683 return TRUE;
9684
9685 if (readonly_dynrelocs (h))
9686 {
9687 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9688
9689 /* Not an error, just cut short the traversal. */
9690 return FALSE;
65f38f15 9691 }
b34976b6 9692 return TRUE;
65f38f15
AM		 9693}
9694
9695/* Set the sizes of the dynamic sections. */
9696
b34976b6 9697static bfd_boolean
ee67d69a 9698ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9699 struct bfd_link_info *info)
65f38f15
AM		 9700{
9701 struct ppc_link_hash_table *htab;
9702 bfd *dynobj;
9703 asection *s;
b34976b6 9704 bfd_boolean relocs;
65f38f15 9705 bfd *ibfd;
7865406b 9706 struct got_entry *first_tlsld;
65f38f15
AM		 9707
9708 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9709 if (htab == NULL)
9710 return FALSE;
9711
65f38f15
AM		 9712 dynobj = htab->elf.dynobj;
9713 if (dynobj == NULL)
9714 abort ();
9715
9716 if (htab->elf.dynamic_sections_created)
9717 {
9718 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9719 if (info->executable)
65f38f15 9720 {
3d4d4302 9721 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9722 if (s == NULL)
9723 abort ();
eea6121a 9724 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9725 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9726 }
9727 }
9728
9729 /* Set up .got offsets for local syms, and space for local dynamic
9730 relocs. */
c72f2fb2 9731 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9732 {
411e1bfb
AM		 9733 struct got_entry **lgot_ents;
9734 struct got_entry **end_lgot_ents;
e054468f
AM		 9735 struct plt_entry **local_plt;
9736 struct plt_entry **end_local_plt;
f961d9dd 9737 unsigned char *lgot_masks;
65f38f15
AM		 9738 bfd_size_type locsymcount;
9739 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9740
0c8d6e5c 9741 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9742 continue;
9743
9744 for (s = ibfd->sections; s != NULL; s = s->next)
9745 {
19e08130 9746 struct ppc_dyn_relocs *p;
65f38f15 9747
6edfbbad 9748 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9749 {
ec338859
AM		 9750 if (!bfd_is_abs_section (p->sec)
9751 && bfd_is_abs_section (p->sec->output_section))
9752 {
9753 /* Input section has been discarded, either because
9754 it is a copy of a linkonce section or due to
9755 linker script /DISCARD/, so we'll be discarding
9756 the relocs too. */
9757 }
248866a8 9758 else if (p->count != 0)
ec338859 9759 {
19e08130
AM		 9760 asection *srel = elf_section_data (p->sec)->sreloc;
9761 if (p->ifunc)
33e44f2e 9762 srel = htab->elf.irelplt;
eea6121a 9763 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9764 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9765 info->flags |= DF_TEXTREL;
ec338859 9766 }
65f38f15
AM		 9767 }
9768 }
9769
411e1bfb
AM		 9770 lgot_ents = elf_local_got_ents (ibfd);
9771 if (!lgot_ents)
65f38f15
AM		 9772 continue;
9773
0ffa91dd 9774 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9775 locsymcount = symtab_hdr->sh_info;
411e1bfb 9776 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9777 local_plt = (struct plt_entry **) end_lgot_ents;
9778 end_local_plt = local_plt + locsymcount;
f961d9dd 9779 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9780 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9781 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9782 {
0b8bcf0d 9783 struct got_entry **pent, *ent;
411e1bfb 9784
0b8bcf0d
AM		 9785 pent = lgot_ents;
9786 while ((ent = *pent) != NULL)
411e1bfb
AM		 9787 if (ent->got.refcount > 0)
9788 {
e7b938ca 9789 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9790 {
927be08e 9791 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9792 *pent = ent->next;
411e1bfb
AM		 9793 }
9794 else
9795 {
19e08130
AM		 9796 unsigned int ent_size = 8;
9797 unsigned int rel_size = sizeof (Elf64_External_Rela);
9798
eea6121a 9799 ent->got.offset = s->size;
e7b938ca 9800 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9801 {
19e08130
AM		 9802 ent_size *= 2;
9803 rel_size *= 2;
9804 }
9805 s->size += ent_size;
9806 if ((*lgot_masks & PLT_IFUNC) != 0)
9807 {
33e44f2e 9808 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9809 htab->got_reli_size += rel_size;
9810 }
9811 else if (info->shared)
9812 {
9813 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9814 srel->size += rel_size;
927be08e 9815 }
0b8bcf0d 9816 pent = &ent->next;
411e1bfb
AM		 9817 }
9818 }
9819 else
0b8bcf0d 9820 *pent = ent->next;
65f38f15 9821 }
e054468f
AM		 9822
9823 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9824 for (; local_plt < end_local_plt; ++local_plt)
9825 {
9826 struct plt_entry *ent;
9827
9828 for (ent = *local_plt; ent != NULL; ent = ent->next)
9829 if (ent->plt.refcount > 0)
9830 {
33e44f2e 9831 s = htab->elf.iplt;
e054468f 9832 ent->plt.offset = s->size;
b9e5796b 9833 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9834
33e44f2e 9835 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9836 }
9837 else
9838 ent->plt.offset = (bfd_vma) -1;
9839 }
65f38f15
AM		 9840 }
9841
9842 /* Allocate global sym .plt and .got entries, and space for global
9843 sym dynamic relocs. */
4ce794b7 9844 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9845 /* Stash the end of glink branch table. */
9846 if (htab->glink != NULL)
9847 htab->glink->rawsize = htab->glink->size;
9848
9849 if (!htab->opd_abi && !info->shared)
9850 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9851
7865406b 9852 first_tlsld = NULL;
c72f2fb2 9853 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9854 {
7865406b
AM		 9855 struct got_entry *ent;
9856
0c8d6e5c 9857 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9858 continue;
9859
7865406b
AM		 9860 ent = ppc64_tlsld_got (ibfd);
9861 if (ent->got.refcount > 0)
102890f0 9862 {
7865406b 9863 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9864 {
7865406b
AM		 9865 ent->is_indirect = TRUE;
9866 ent->got.ent = first_tlsld;
9867 }
9868 else
9869 {
9870 if (first_tlsld == NULL)
9871 first_tlsld = ent;
9872 s = ppc64_elf_tdata (ibfd)->got;
9873 ent->got.offset = s->size;
9874 ent->owner = ibfd;
9875 s->size += 16;
9876 if (info->shared)
9877 {
9878 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9879 srel->size += sizeof (Elf64_External_Rela);
9880 }
102890f0
AM		 9881 }
9882 }
9883 else
7865406b 9884 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9885 }
9886
65f38f15
AM		 9887 /* We now have determined the sizes of the various dynamic sections.
9888 Allocate memory for them. */
b34976b6 9889 relocs = FALSE;
65f38f15
AM		 9890 for (s = dynobj->sections; s != NULL; s = s->next)
9891 {
9892 if ((s->flags & SEC_LINKER_CREATED) == 0)
9893 continue;
9894
4ce794b7 9895 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9896 /* These haven't been allocated yet; don't strip. */
9897 continue;
33e44f2e
AM		 9898 else if (s == htab->elf.sgot
9899 || s == htab->elf.splt
9900 || s == htab->elf.iplt
c456f082
AM		 9901 || s == htab->glink
9902 || s == htab->dynbss)
65f38f15
AM		 9903 {
9904 /* Strip this section if we don't need it; see the
9905 comment below. */
5bd4f169 9906 }
58d180e8
AM		 9907 else if (s == htab->glink_eh_frame)
9908 {
9909 if (!bfd_is_abs_section (s->output_section))
9910 /* Not sized yet. */
9911 continue;
9912 }
70cc837d 9913 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9914 {
c456f082 9915 if (s->size != 0)
5bd4f169 9916 {
33e44f2e 9917 if (s != htab->elf.srelplt)
b34976b6 9918 relocs = TRUE;
5bd4f169
AM		 9919
9920 /* We use the reloc_count field as a counter if we need
9921 to copy relocs into the output file. */
9922 s->reloc_count = 0;
9923 }
9924 }
65f38f15 9925 else
5bd4f169
AM		 9926 {
9927 /* It's not one of our sections, so don't allocate space. */
9928 continue;
9929 }
9930
eea6121a 9931 if (s->size == 0)
5bd4f169 9932 {
c456f082
AM		 9933 /* If we don't need this section, strip it from the
9934 output file. This is mostly to handle .rela.bss and
9935 .rela.plt. We must create both sections in
9936 create_dynamic_sections, because they must be created
9937 before the linker maps input sections to output
9938 sections. The linker does that before
9939 adjust_dynamic_symbol is called, and it is that
9940 function which decides whether anything needs to go
9941 into these sections. */
8423293d 9942 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9943 continue;
9944 }
9945
c456f082 9946 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9947 continue;
9948
65f38f15
AM		 9949 /* Allocate memory for the section contents. We use bfd_zalloc
9950 here in case unused entries are not reclaimed before the
9951 section's contents are written out. This should not happen,
411e1bfb
AM		 9952 but this way if it does we get a R_PPC64_NONE reloc in .rela
9953 sections instead of garbage.
9954 We also rely on the section contents being zero when writing
9955 the GOT. */
eea6121a 9956 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9957 if (s->contents == NULL)
b34976b6 9958 return FALSE;
5bd4f169
AM		 9959 }
9960
c72f2fb2 9961 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9962 {
0c8d6e5c 9963 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9964 continue;
9965
e717da7e 9966 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9967 if (s != NULL && s != htab->elf.sgot)
e717da7e 9968 {
eea6121a 9969 if (s->size == 0)
8423293d 9970 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9971 else
9972 {
eea6121a 9973 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9974 if (s->contents == NULL)
9975 return FALSE;
9976 }
9977 }
9978 s = ppc64_elf_tdata (ibfd)->relgot;
9979 if (s != NULL)
9980 {
eea6121a 9981 if (s->size == 0)
8423293d 9982 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9983 else
9984 {
eea6121a 9985 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9986 if (s->contents == NULL)
9987 return FALSE;
9988 relocs = TRUE;
9989 s->reloc_count = 0;
9990 }
9991 }
9992 }
9993
e86ce104 9994 if (htab->elf.dynamic_sections_created)
5bd4f169 9995 {
e8910a83
AM		 9996 bfd_boolean tls_opt;
9997
5bd4f169
AM		 9998 /* Add some entries to the .dynamic section. We fill in the
9999 values later, in ppc64_elf_finish_dynamic_sections, but we
10000 must add the entries now so that we get the correct size for
10001 the .dynamic section. The DT_DEBUG entry is filled in by the
10002 dynamic linker and used by the debugger. */
dc810e39 10003#define add_dynamic_entry(TAG, VAL) \
5a580b3a 10004 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 10005
36af4a4e 10006 if (info->executable)
5bd4f169 10007 {
dc810e39 10008 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 10009 return FALSE;
5bd4f169
AM		 10010 }
10011
33e44f2e 10012 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 10013 {
dc810e39
AM		 10014 if (!add_dynamic_entry (DT_PLTGOT, 0)
10015 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10016 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 10017 || !add_dynamic_entry (DT_JMPREL, 0)
10018 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 10019 return FALSE;
5bd4f169
AM		 10020 }
10021
ee67d69a 10022 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 10023 {
10024 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10025 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 10026 return FALSE;
19397422
AM		 10027 }
10028
e7d1c40c 10029 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 10030 && htab->tls_get_addr_fd != NULL
10031 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10032 if (tls_opt || !htab->opd_abi)
10033 {
10034 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10035 return FALSE;
10036 }
a7f2871e 10037
5bd4f169
AM		 10038 if (relocs)
10039 {
dc810e39
AM		 10040 if (!add_dynamic_entry (DT_RELA, 0)
10041 || !add_dynamic_entry (DT_RELASZ, 0)
10042 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10043 return FALSE;
5bd4f169 10044
65f38f15
AM		 10045 /* If any dynamic relocs apply to a read-only section,
10046 then we need a DT_TEXTREL entry. */
248866a8 10047 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10048 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10049
65f38f15 10050 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10051 {
65f38f15 10052 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10053 return FALSE;
5bd4f169 10054 }
5bd4f169 10055 }
5bd4f169 10056 }
65f38f15 10057#undef add_dynamic_entry
5bd4f169 10058
b34976b6 10059 return TRUE;
5bd4f169
AM		 10060}
10061
a345bc8d
AM		 10062/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10063
10064static bfd_boolean
10065ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10066{
10067 if (h->plt.plist != NULL
10068 && !h->def_regular
10069 && !h->pointer_equality_needed)
10070 return FALSE;
10071
10072 return _bfd_elf_hash_symbol (h);
10073}
10074
721956f4 10075/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10076
4ce794b7
AM		 10077static inline enum ppc_stub_type
10078ppc_type_of_stub (asection *input_sec,
10079 const Elf_Internal_Rela *rel,
10080 struct ppc_link_hash_entry **hash,
e054468f 10081 struct plt_entry **plt_ent,
6911b7dc
AM		 10082 bfd_vma destination,
10083 unsigned long local_off)
5bd4f169 10084{
721956f4
AM		 10085 struct ppc_link_hash_entry *h = *hash;
10086 bfd_vma location;
10087 bfd_vma branch_offset;
10088 bfd_vma max_branch_offset;
4ce794b7 10089 enum elf_ppc64_reloc_type r_type;
5bd4f169 10090
721956f4
AM		 10091 if (h != NULL)
10092 {
e054468f 10093 struct plt_entry *ent;
7fe2b9a6 10094 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10095 if (h->oh != NULL
10096 && h->oh->is_func_descriptor)
7b8f6675
AM		 10097 {
10098 fdh = ppc_follow_link (h->oh);
10099 *hash = fdh;
10100 }
8387904d 10101
e054468f
AM		 10102 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10103 if (ent->addend == rel->r_addend
10104 && ent->plt.offset != (bfd_vma) -1)
10105 {
e054468f
AM		 10106 *plt_ent = ent;
10107 return ppc_stub_plt_call;
10108 }
5bd4f169 10109
7fe2b9a6
AM		 10110 /* Here, we know we don't have a plt entry. If we don't have a
10111 either a defined function descriptor or a defined entry symbol
10112 in a regular object file, then it is pointless trying to make
10113 any other type of stub. */
854b41e7
AM		 10114 if (!is_static_defined (&fdh->elf)
10115 && !is_static_defined (&h->elf))
721956f4 10116 return ppc_stub_none;
5d1634d7 10117 }
e054468f
AM		 10118 else if (elf_local_got_ents (input_sec->owner) != NULL)
10119 {
10120 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10121 struct plt_entry **local_plt = (struct plt_entry **)
10122 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10123 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10124
10125 if (local_plt[r_symndx] != NULL)
10126 {
10127 struct plt_entry *ent;
10128
10129 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10130 if (ent->addend == rel->r_addend
10131 && ent->plt.offset != (bfd_vma) -1)
10132 {
10133 *plt_ent = ent;
10134 return ppc_stub_plt_call;
10135 }
10136 }
10137 }
5d1634d7 10138
721956f4
AM		 10139 /* Determine where the call point is. */
10140 location = (input_sec->output_offset
10141 + input_sec->output_section->vma
10142 + rel->r_offset);
5d1634d7 10143
721956f4
AM		 10144 branch_offset = destination - location;
10145 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10146
721956f4
AM		 10147 /* Determine if a long branch stub is needed. */
10148 max_branch_offset = 1 << 25;
4ce794b7 10149 if (r_type != R_PPC64_REL24)
721956f4 10150 max_branch_offset = 1 << 15;
5d1634d7 10151
6911b7dc 10152 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10153 /* We need a stub. Figure out whether a long_branch or plt_branch
10154 is needed later. */
10155 return ppc_stub_long_branch;
5d1634d7 10156
721956f4 10157 return ppc_stub_none;
5d1634d7
AM		 10158}
10159
794e51c0
AM		 10160/* With power7 weakly ordered memory model, it is possible for ld.so
10161 to update a plt entry in one thread and have another thread see a
10162 stale zero toc entry. To avoid this we need some sort of acquire
10163 barrier in the call stub. One solution is to make the load of the
10164 toc word seem to appear to depend on the load of the function entry
10165 word. Another solution is to test for r2 being zero, and branch to
10166 the appropriate glink entry if so.
10167
10168 . fake dep barrier compare
71a39c98
AM		 10169 . ld 12,xxx(2) ld 12,xxx(2)
10170 . mtctr 12 mtctr 12
10171 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10172 . add 2,2,11 cmpldi 2,0
10173 . ld 2,xxx+8(2) bnectr+
10174 . bctr b <glink_entry>
10175
10176 The solution involving the compare turns out to be faster, so
10177 that's what we use unless the branch won't reach. */
10178
10179#define ALWAYS_USE_FAKE_DEP 0
10180#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10181
5d1634d7
AM		 10182#define PPC_LO(v) ((v) & 0xffff)
10183#define PPC_HI(v) (((v) >> 16) & 0xffff)
10184#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10185
794e51c0
AM		 10186static inline unsigned int
10187plt_stub_size (struct ppc_link_hash_table *htab,
10188 struct ppc_stub_hash_entry *stub_entry,
10189 bfd_vma off)
10190{
b9e5796b
AM		 10191 unsigned size = 12;
10192
10193 if (ALWAYS_EMIT_R2SAVE
10194 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10195 size += 4;
10196 if (PPC_HA (off) != 0)
794e51c0 10197 size += 4;
b9e5796b
AM		 10198 if (htab->opd_abi)
10199 {
10200 size += 4;
e7d1c40c 10201 if (htab->params->plt_static_chain)
b9e5796b 10202 size += 4;
e7d1c40c 10203 if (htab->params->plt_thread_safe)
b9e5796b 10204 size += 8;
e7d1c40c 10205 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10206 size += 4;
10207 }
794e51c0
AM		 10208 if (stub_entry->h != NULL
10209 && (stub_entry->h == htab->tls_get_addr_fd
10210 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10211 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10212 size += 13 * 4;
10213 return size;
10214}
10215
10216/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10217 then return the padding needed to do so. */
10218static inline unsigned int
10219plt_stub_pad (struct ppc_link_hash_table *htab,
10220 struct ppc_stub_hash_entry *stub_entry,
10221 bfd_vma plt_off)
10222{
e7d1c40c 10223 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0
AM		 10224 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10225 bfd_vma stub_off = stub_entry->stub_sec->size;
10226
10227 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
e05fa0ba 10228 > ((stub_size - 1) & -stub_align))
794e51c0
AM		 10229 return stub_align - (stub_off & (stub_align - 1));
10230 return 0;
10231}
10232
10233/* Build a .plt call stub. */
10234
10235static inline bfd_byte *
10236build_plt_stub (struct ppc_link_hash_table *htab,
10237 struct ppc_stub_hash_entry *stub_entry,
10238 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10239{
e7d1c40c 10240 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10241 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c
AM		 10242 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10243 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
794e51c0
AM		 10244 bfd_boolean use_fake_dep = plt_thread_safe;
10245 bfd_vma cmp_branch_off = 0;
10246
10247 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10248 && plt_load_toc
794e51c0
AM		 10249 && plt_thread_safe
10250 && !(stub_entry->h != NULL
10251 && (stub_entry->h == htab->tls_get_addr_fd
10252 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10253 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10254 {
10255 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10256 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10257 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10258 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10259 bfd_vma to, from;
10260
68d62958
AM		 10261 if (pltindex > 32768)
10262 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10263 to = (glinkoff
10264 + htab->glink->output_offset
10265 + htab->glink->output_section->vma);
10266 from = (p - stub_entry->stub_sec->contents
10267 + 4 * (ALWAYS_EMIT_R2SAVE
10268 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10269 + 4 * (PPC_HA (offset) != 0)
10270 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10271 != PPC_HA (offset))
10272 + 4 * (plt_static_chain != 0)
10273 + 20
10274 + stub_entry->stub_sec->output_offset
10275 + stub_entry->stub_sec->output_section->vma);
10276 cmp_branch_off = to - from;
10277 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10278 }
10279
ac2df442
AM		 10280 if (PPC_HA (offset) != 0)
10281 {
176a0d42
AM		 10282 if (r != NULL)
10283 {
794e51c0
AM		 10284 if (ALWAYS_EMIT_R2SAVE
10285 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10286 r[0].r_offset += 4;
176a0d42 10287 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10288 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10289 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10290 r[1].r_addend = r[0].r_addend;
b9e5796b 10291 if (plt_load_toc)
176a0d42 10292 {
b9e5796b 10293 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10294 {
b9e5796b
AM		 10295 r[2].r_offset = r[1].r_offset + 4;
10296 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10297 r[2].r_addend = r[0].r_addend;
10298 }
10299 else
10300 {
10301 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10302 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10303 r[2].r_addend = r[0].r_addend + 8;
10304 if (plt_static_chain)
10305 {
10306 r[3].r_offset = r[2].r_offset + 4;
10307 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10308 r[3].r_addend = r[0].r_addend + 16;
10309 }
c7131b65 10310 }
176a0d42
AM		 10311 }
10312 }
794e51c0
AM		 10313 if (ALWAYS_EMIT_R2SAVE
10314 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10315 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10316 if (plt_load_toc)
10317 {
10318 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10319 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10320 }
10321 else
10322 {
10323 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10324 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10325 }
b9e5796b
AM		 10326 if (plt_load_toc
10327 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10328 {
71a39c98 10329 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10330 offset = 0;
10331 }
71a39c98 10332 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10333 if (plt_load_toc)
794e51c0 10334 {
b9e5796b
AM		 10335 if (use_fake_dep)
10336 {
10337 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10338 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10339 }
10340 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10341 if (plt_static_chain)
10342 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10343 }
ac2df442
AM		 10344 }
10345 else
10346 {
176a0d42
AM		 10347 if (r != NULL)
10348 {
794e51c0
AM		 10349 if (ALWAYS_EMIT_R2SAVE
10350 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10351 r[0].r_offset += 4;
176a0d42 10352 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10353 if (plt_load_toc)
176a0d42 10354 {
b9e5796b 10355 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10356 {
b9e5796b
AM		 10357 r[1].r_offset = r[0].r_offset + 4;
10358 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10359 r[1].r_addend = r[0].r_addend;
10360 }
10361 else
10362 {
10363 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10364 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10365 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10366 if (plt_static_chain)
10367 {
10368 r[2].r_offset = r[1].r_offset + 4;
10369 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10370 r[2].r_addend = r[0].r_addend + 8;
10371 }
c7131b65 10372 }
176a0d42
AM		 10373 }
10374 }
794e51c0
AM		 10375 if (ALWAYS_EMIT_R2SAVE
10376 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10377 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10378 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10379 if (plt_load_toc
10380 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10381 {
10382 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10383 offset = 0;
10384 }
71a39c98 10385 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10386 if (plt_load_toc)
794e51c0 10387 {
b9e5796b
AM		 10388 if (use_fake_dep)
10389 {
10390 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10391 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10392 }
10393 if (plt_static_chain)
10394 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10395 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10396 }
ac2df442 10397 }
b9e5796b 10398 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10399 {
10400 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10401 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10402 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10403 }
10404 else
10405 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10406 return p;
10407}
10408
a7f2871e
AM		 10409/* Build a special .plt call stub for __tls_get_addr. */
10410
10411#define LD_R11_0R3 0xe9630000
10412#define LD_R12_0R3 0xe9830000
10413#define MR_R0_R3 0x7c601b78
10414#define CMPDI_R11_0 0x2c2b0000
10415#define ADD_R3_R12_R13 0x7c6c6a14
10416#define BEQLR 0x4d820020
10417#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10418#define STD_R11_0R1 0xf9610000
10419#define BCTRL 0x4e800421
10420#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10421#define MTLR_R11 0x7d6803a6
10422
10423static inline bfd_byte *
794e51c0
AM		 10424build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10425 struct ppc_stub_hash_entry *stub_entry,
10426 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10427{
e7d1c40c 10428 bfd *obfd = htab->params->stub_bfd;
794e51c0 10429
a7f2871e
AM		 10430 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10431 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10432 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10433 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10434 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10435 bfd_put_32 (obfd, BEQLR, p), p += 4;
10436 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10437 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10438 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10439
10440 if (r != NULL)
10441 r[0].r_offset += 9 * 4;
794e51c0 10442 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10443 bfd_put_32 (obfd, BCTRL, p - 4);
10444
a078d95a
AM		 10445 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10446 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
a7f2871e
AM		 10447 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10448 bfd_put_32 (obfd, BLR, p), p += 4;
10449
10450 return p;
10451}
10452
176a0d42
AM		 10453static Elf_Internal_Rela *
10454get_relocs (asection *sec, int count)
10455{
10456 Elf_Internal_Rela *relocs;
10457 struct bfd_elf_section_data *elfsec_data;
10458
10459 elfsec_data = elf_section_data (sec);
10460 relocs = elfsec_data->relocs;
10461 if (relocs == NULL)
10462 {
10463 bfd_size_type relsize;
10464 relsize = sec->reloc_count * sizeof (*relocs);
10465 relocs = bfd_alloc (sec->owner, relsize);
10466 if (relocs == NULL)
10467 return NULL;
10468 elfsec_data->relocs = relocs;
d4730f92
BS		 10469 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10470 sizeof (Elf_Internal_Shdr));
10471 if (elfsec_data->rela.hdr == NULL)
10472 return NULL;
10473 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10474 * sizeof (Elf64_External_Rela));
10475 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10476 sec->reloc_count = 0;
10477 }
10478 relocs += sec->reloc_count;
10479 sec->reloc_count += count;
10480 return relocs;
10481}
10482
aa374f67 10483static bfd_vma
25f53a85 10484get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10485 struct ppc_stub_hash_entry *stub_entry)
10486{
25f53a85 10487 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM		 10488 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10489
10490 if (r2off == 0)
10491 {
10492 /* Support linking -R objects. Get the toc pointer from the
10493 opd entry. */
10494 char buf[8];
b9e5796b
AM		 10495 if (!htab->opd_abi)
10496 return r2off;
aa374f67
AM		 10497 asection *opd = stub_entry->h->elf.root.u.def.section;
10498 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10499
10500 if (strcmp (opd->name, ".opd") != 0
10501 || opd->reloc_count != 0)
10502 {
bc30df16 10503 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10504 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10505 bfd_set_error (bfd_error_bad_value);
10506 return 0;
10507 }
10508 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10509 return 0;
10510 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10511 r2off -= elf_gp (info->output_bfd);
aa374f67
AM		 10512 }
10513 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10514 return r2off;
10515}
10516
b34976b6 10517static bfd_boolean
4ce794b7 10518ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10519{
721956f4
AM		 10520 struct ppc_stub_hash_entry *stub_entry;
10521 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10522 struct bfd_link_info *info;
10523 struct ppc_link_hash_table *htab;
721956f4
AM		 10524 bfd_byte *loc;
10525 bfd_byte *p;
ee75fd95 10526 bfd_vma dest, off;
721956f4 10527 int size;
176a0d42 10528 Elf_Internal_Rela *r;
e054468f 10529 asection *plt;
5d1634d7 10530
721956f4
AM		 10531 /* Massage our args to the form they really have. */
10532 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10533 info = in_arg;
5d1634d7 10534
5d1634d7 10535 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10536 if (htab == NULL)
10537 return FALSE;
5d1634d7 10538
721956f4 10539 /* Make a note of the offset within the stubs for this entry. */
eea6121a 10540 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 10541 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 10542
4ce794b7 10543 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10544 switch (stub_entry->stub_type)
5d1634d7 10545 {
721956f4 10546 case ppc_stub_long_branch:
ad8e1ba5 10547 case ppc_stub_long_branch_r2off:
721956f4 10548 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10549 dest = (stub_entry->target_value
10550 + stub_entry->target_section->output_offset
10551 + stub_entry->target_section->output_section->vma);
10552 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10553 off = dest;
5d1634d7 10554
721956f4
AM		 10555 /* And this is where we are coming from. */
10556 off -= (stub_entry->stub_offset
97b639ba
AM		 10557 + stub_entry->stub_sec->output_offset
10558 + stub_entry->stub_sec->output_section->vma);
e86ce104 10559
ac2df442
AM		 10560 size = 4;
10561 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10562 {
25f53a85 10563 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10564
aa374f67
AM		 10565 if (r2off == 0)
10566 {
10567 htab->stub_error = TRUE;
10568 return FALSE;
10569 }
e7d1c40c 10570 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10571 loc += 4;
ac2df442
AM		 10572 size = 12;
10573 if (PPC_HA (r2off) != 0)
10574 {
10575 size = 16;
e7d1c40c
AM		 10576 bfd_put_32 (htab->params->stub_bfd,
10577 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10578 loc += 4;
10579 }
e7d1c40c 10580 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10581 loc += 4;
ac2df442 10582 off -= size - 4;
ad8e1ba5 10583 }
e7d1c40c 10584 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10585
5c3dead3
AM		 10586 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10587 {
bc30df16
AM		 10588 info->callbacks->einfo
10589 (_("%P: long branch stub `%s' offset overflow\n"),
10590 stub_entry->root.string);
5c3dead3
AM		 10591 htab->stub_error = TRUE;
10592 return FALSE;
10593 }
ee75fd95
AM		 10594
10595 if (info->emitrelocations)
10596 {
176a0d42
AM		 10597 r = get_relocs (stub_entry->stub_sec, 1);
10598 if (r == NULL)
10599 return FALSE;
ee75fd95
AM		 10600 r->r_offset = loc - stub_entry->stub_sec->contents;
10601 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10602 r->r_addend = dest;
10603 if (stub_entry->h != NULL)
10604 {
10605 struct elf_link_hash_entry **hashes;
10606 unsigned long symndx;
10607 struct ppc_link_hash_entry *h;
10608
e7d1c40c 10609 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10610 if (hashes == NULL)
10611 {
10612 bfd_size_type hsize;
10613
10614 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10615 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10616 if (hashes == NULL)
10617 return FALSE;
e7d1c40c 10618 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10619 htab->stub_globals = 1;
10620 }
10621 symndx = htab->stub_globals++;
10622 h = stub_entry->h;
10623 hashes[symndx] = &h->elf;
10624 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10625 if (h->oh != NULL && h->oh->is_func)
b31867b6 10626 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10627 if (h->elf.root.u.def.section != stub_entry->target_section)
10628 /* H is an opd symbol. The addend must be zero. */
10629 r->r_addend = 0;
10630 else
10631 {
10632 off = (h->elf.root.u.def.value
10633 + h->elf.root.u.def.section->output_offset
10634 + h->elf.root.u.def.section->output_section->vma);
10635 r->r_addend -= off;
10636 }
10637 }
10638 }
721956f4 10639 break;
e86ce104 10640
721956f4 10641 case ppc_stub_plt_branch:
ad8e1ba5 10642 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10643 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10644 stub_entry->root.string + 9,
b34976b6 10645 FALSE, FALSE);
721956f4
AM		 10646 if (br_entry == NULL)
10647 {
8de848d8 10648 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10649 stub_entry->root.string);
b34976b6
AM		 10650 htab->stub_error = TRUE;
10651 return FALSE;
721956f4
AM		 10652 }
10653
176a0d42
AM		 10654 dest = (stub_entry->target_value
10655 + stub_entry->target_section->output_offset
10656 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10657 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10658 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10659
176a0d42 10660 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10661 htab->brlt->contents + br_entry->offset);
721956f4 10662
f94498ff 10663 if (br_entry->iter == htab->stub_iteration)
721956f4 10664 {
f94498ff 10665 br_entry->iter = 0;
84f5d08e 10666
f94498ff 10667 if (htab->relbrlt != NULL)
84f5d08e 10668 {
f94498ff
AM		 10669 /* Create a reloc for the branch lookup table entry. */
10670 Elf_Internal_Rela rela;
10671 bfd_byte *rl;
10672
10673 rela.r_offset = (br_entry->offset
10674 + htab->brlt->output_offset
10675 + htab->brlt->output_section->vma);
10676 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10677 rela.r_addend = dest;
f94498ff
AM		 10678
10679 rl = htab->relbrlt->contents;
10680 rl += (htab->relbrlt->reloc_count++
10681 * sizeof (Elf64_External_Rela));
10682 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10683 }
10684 else if (info->emitrelocations)
10685 {
176a0d42
AM		 10686 r = get_relocs (htab->brlt, 1);
10687 if (r == NULL)
10688 return FALSE;
10689 /* brlt, being SEC_LINKER_CREATED does not go through the
10690 normal reloc processing. Symbols and offsets are not
10691 translated from input file to output file form, so
10692 set up the offset per the output file. */
f94498ff
AM		 10693 r->r_offset = (br_entry->offset
10694 + htab->brlt->output_offset
10695 + htab->brlt->output_section->vma);
10696 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10697 r->r_addend = dest;
84f5d08e 10698 }
84f5d08e 10699 }
721956f4 10700
176a0d42
AM		 10701 dest = (br_entry->offset
10702 + htab->brlt->output_offset
10703 + htab->brlt->output_section->vma);
10704
10705 off = (dest
4ce794b7 10706 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10707 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10708
ad8e1ba5 10709 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10710 {
25f53a85 10711 info->callbacks->einfo
bc30df16 10712 (_("%P: linkage table error against `%T'\n"),
721956f4 10713 stub_entry->root.string);
5d1634d7 10714 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10715 htab->stub_error = TRUE;
10716 return FALSE;
5d1634d7 10717 }
41bd81ab 10718
176a0d42
AM		 10719 if (info->emitrelocations)
10720 {
10721 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10722 if (r == NULL)
10723 return FALSE;
10724 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10725 if (bfd_big_endian (info->output_bfd))
10726 r[0].r_offset += 2;
00f412ee 10727 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10728 r[0].r_offset += 4;
10729 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10730 r[0].r_addend = dest;
10731 if (PPC_HA (off) != 0)
10732 {
10733 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10734 r[1].r_offset = r[0].r_offset + 4;
10735 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10736 r[1].r_addend = r[0].r_addend;
10737 }
10738 }
10739
00f412ee 10740 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10741 {
176a0d42 10742 if (PPC_HA (off) != 0)
ac2df442
AM		 10743 {
10744 size = 16;
e7d1c40c 10745 bfd_put_32 (htab->params->stub_bfd,
397998fc 10746 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10747 loc += 4;
e7d1c40c 10748 bfd_put_32 (htab->params->stub_bfd,
397998fc 10749 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10750 }
10751 else
10752 {
10753 size = 12;
e7d1c40c
AM		 10754 bfd_put_32 (htab->params->stub_bfd,
10755 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10756 }
ad8e1ba5
AM		 10757 }
10758 else
10759 {
25f53a85 10760 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10761
00f412ee 10762 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10763 {
10764 htab->stub_error = TRUE;
10765 return FALSE;
10766 }
ad8e1ba5 10767
e7d1c40c 10768 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10769 loc += 4;
00f412ee 10770 size = 16;
176a0d42 10771 if (PPC_HA (off) != 0)
ac2df442
AM		 10772 {
10773 size += 4;
e7d1c40c 10774 bfd_put_32 (htab->params->stub_bfd,
397998fc 10775 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10776 loc += 4;
e7d1c40c 10777 bfd_put_32 (htab->params->stub_bfd,
397998fc 10778 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10779 }
10780 else
e7d1c40c 10781 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10782
10783 if (PPC_HA (r2off) != 0)
10784 {
10785 size += 4;
00f412ee 10786 loc += 4;
e7d1c40c
AM		 10787 bfd_put_32 (htab->params->stub_bfd,
10788 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10789 }
10790 if (PPC_LO (r2off) != 0)
10791 {
10792 size += 4;
ac2df442 10793 loc += 4;
e7d1c40c
AM		 10794 bfd_put_32 (htab->params->stub_bfd,
10795 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10796 }
ad8e1ba5
AM		 10797 }
10798 loc += 4;
e7d1c40c 10799 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10800 loc += 4;
e7d1c40c 10801 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10802 break;
5d1634d7 10803
721956f4 10804 case ppc_stub_plt_call:
794e51c0 10805 case ppc_stub_plt_call_r2save:
e054468f 10806 if (stub_entry->h != NULL
b31867b6
AM		 10807 && stub_entry->h->is_func_descriptor
10808 && stub_entry->h->oh != NULL)
c862ae31 10809 {
b31867b6
AM		 10810 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10811
10812 /* If the old-ABI "dot-symbol" is undefined make it weak so
10813 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10814 FIXME: We used to define the symbol on one of the call
10815 stubs instead, which is why we test symbol section id
10816 against htab->top_id in various places. Likely all
10817 these checks could now disappear. */
10818 if (fh->elf.root.type == bfd_link_hash_undefined)
10819 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10820 /* Stop undo_symbol_twiddle changing it back to undefined. */
10821 fh->was_undefined = 0;
c862ae31
AM		 10822 }
10823
721956f4 10824 /* Now build the stub. */
e054468f 10825 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10826 if (dest >= (bfd_vma) -2)
721956f4
AM		 10827 abort ();
10828
33e44f2e 10829 plt = htab->elf.splt;
25f23106
AM		 10830 if (!htab->elf.dynamic_sections_created
10831 || stub_entry->h == NULL
10832 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10833 plt = htab->elf.iplt;
e054468f
AM		 10834
10835 dest += plt->output_offset + plt->output_section->vma;
10836
10837 if (stub_entry->h == NULL
10838 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10839 {
10840 Elf_Internal_Rela rela;
10841 bfd_byte *rl;
10842
10843 rela.r_offset = dest;
ee67d69a
AM		 10844 if (htab->opd_abi)
10845 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10846 else
10847 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10848 rela.r_addend = (stub_entry->target_value
10849 + stub_entry->target_section->output_offset
10850 + stub_entry->target_section->output_section->vma);
10851
33e44f2e
AM		 10852 rl = (htab->elf.irelplt->contents
10853 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10854 * sizeof (Elf64_External_Rela)));
10855 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10856 stub_entry->plt_ent->plt.offset |= 1;
10857 }
176a0d42
AM		 10858
10859 off = (dest
e054468f 10860 - elf_gp (plt->output_section->owner)
176a0d42 10861 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10862
ad8e1ba5 10863 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10864 {
25f53a85 10865 info->callbacks->einfo
bc30df16 10866 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10867 stub_entry->h != NULL
10868 ? stub_entry->h->elf.root.root.string
10869 : "<local sym>");
721956f4 10870 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10871 htab->stub_error = TRUE;
10872 return FALSE;
721956f4
AM		 10873 }
10874
e7d1c40c 10875 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10876 {
10877 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10878
10879 stub_entry->stub_sec->size += pad;
10880 stub_entry->stub_offset = stub_entry->stub_sec->size;
10881 loc += pad;
10882 }
10883
176a0d42
AM		 10884 r = NULL;
10885 if (info->emitrelocations)
10886 {
10887 r = get_relocs (stub_entry->stub_sec,
3ba720c7
AM		 10888 ((PPC_HA (off) != 0)
10889 + (htab->opd_abi
e7d1c40c 10890 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10891 && PPC_HA (off + 16) == PPC_HA (off))
10892 : 1)));
176a0d42
AM		 10893 if (r == NULL)
10894 return FALSE;
10895 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10896 if (bfd_big_endian (info->output_bfd))
10897 r[0].r_offset += 2;
176a0d42
AM		 10898 r[0].r_addend = dest;
10899 }
a7f2871e
AM		 10900 if (stub_entry->h != NULL
10901 && (stub_entry->h == htab->tls_get_addr_fd
10902 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10903 && !htab->params->no_tls_get_addr_opt)
794e51c0 10904 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10905 else
794e51c0 10906 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10907 size = p - loc;
10908 break;
10909
10910 default:
10911 BFD_FAIL ();
b34976b6 10912 return FALSE;
721956f4
AM		 10913 }
10914
eea6121a 10915 stub_entry->stub_sec->size += size;
97b639ba 10916
e7d1c40c 10917 if (htab->params->emit_stub_syms)
97b639ba
AM		 10918 {
10919 struct elf_link_hash_entry *h;
ee75fd95
AM		 10920 size_t len1, len2;
10921 char *name;
10922 const char *const stub_str[] = { "long_branch",
10923 "long_branch_r2off",
10924 "plt_branch",
10925 "plt_branch_r2off",
794e51c0 10926 "plt_call",
ee75fd95
AM		 10927 "plt_call" };
10928
10929 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10930 len2 = strlen (stub_entry->root.string);
10931 name = bfd_malloc (len1 + len2 + 2);
10932 if (name == NULL)
10933 return FALSE;
10934 memcpy (name, stub_entry->root.string, 9);
10935 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10936 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10937 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10938 if (h == NULL)
10939 return FALSE;
10940 if (h->root.type == bfd_link_hash_new)
10941 {
10942 h->root.type = bfd_link_hash_defined;
10943 h->root.u.def.section = stub_entry->stub_sec;
10944 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10945 h->ref_regular = 1;
10946 h->def_regular = 1;
10947 h->ref_regular_nonweak = 1;
10948 h->forced_local = 1;
10949 h->non_elf = 0;
97b639ba
AM		 10950 }
10951 }
10952
b34976b6 10953 return TRUE;
721956f4
AM		 10954}
10955
10956/* As above, but don't actually build the stub. Just bump offset so
10957 we know stub section sizes, and select plt_branch stubs where
10958 long_branch stubs won't do. */
10959
b34976b6 10960static bfd_boolean
4ce794b7 10961ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10962{
10963 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10964 struct bfd_link_info *info;
721956f4
AM		 10965 struct ppc_link_hash_table *htab;
10966 bfd_vma off;
10967 int size;
10968
10969 /* Massage our args to the form they really have. */
10970 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 10971 info = in_arg;
10972
10973 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10974 if (htab == NULL)
10975 return FALSE;
721956f4 10976
794e51c0
AM		 10977 if (stub_entry->stub_type == ppc_stub_plt_call
10978 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10979 {
e054468f
AM		 10980 asection *plt;
10981 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10982 if (off >= (bfd_vma) -2)
411e1bfb 10983 abort ();
33e44f2e 10984 plt = htab->elf.splt;
25f23106
AM		 10985 if (!htab->elf.dynamic_sections_created
10986 || stub_entry->h == NULL
10987 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10988 plt = htab->elf.iplt;
e054468f
AM		 10989 off += (plt->output_offset
10990 + plt->output_section->vma
10991 - elf_gp (plt->output_section->owner)
ad8e1ba5 10992 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10993
794e51c0 10994 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 10995 if (htab->params->plt_stub_align)
794e51c0 10996 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 10997 if (info->emitrelocations)
10998 {
10999 stub_entry->stub_sec->reloc_count
b9e5796b
AM		 11000 += ((PPC_HA (off) != 0)
11001 + (htab->opd_abi
e7d1c40c 11002 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 11003 && PPC_HA (off + 16) == PPC_HA (off))
11004 : 1));
176a0d42
AM		 11005 stub_entry->stub_sec->flags |= SEC_RELOC;
11006 }
721956f4
AM		 11007 }
11008 else
11009 {
ad8e1ba5
AM		 11010 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11011 variants. */
ac2df442 11012 bfd_vma r2off = 0;
6911b7dc 11013 bfd_vma local_off = 0;
ac2df442 11014
721956f4
AM		 11015 off = (stub_entry->target_value
11016 + stub_entry->target_section->output_offset
11017 + stub_entry->target_section->output_section->vma);
eea6121a 11018 off -= (stub_entry->stub_sec->size
721956f4
AM		 11019 + stub_entry->stub_sec->output_offset
11020 + stub_entry->stub_sec->output_section->vma);
11021
ad8e1ba5
AM		 11022 /* Reset the stub type from the plt variant in case we now
11023 can reach with a shorter stub. */
11024 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11025 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11026
11027 size = 4;
11028 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11029 {
25f53a85 11030 r2off = get_r2off (info, stub_entry);
b9e5796b 11031 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 11032 {
11033 htab->stub_error = TRUE;
11034 return FALSE;
11035 }
ac2df442
AM		 11036 size = 12;
11037 if (PPC_HA (r2off) != 0)
11038 size = 16;
11039 off -= size - 4;
ad8e1ba5
AM		 11040 }
11041
6911b7dc
AM		 11042 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11043
b9e5796b
AM		 11044 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11045 Do the same for -R objects without function descriptors. */
11046 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11047 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11048 && r2off == 0))
721956f4
AM		 11049 {
11050 struct ppc_branch_hash_entry *br_entry;
11051
11052 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11053 stub_entry->root.string + 9,
b34976b6 11054 TRUE, FALSE);
721956f4
AM		 11055 if (br_entry == NULL)
11056 {
8de848d8 11057 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11058 stub_entry->root.string);
b34976b6
AM		 11059 htab->stub_error = TRUE;
11060 return FALSE;
721956f4
AM		 11061 }
11062
11063 if (br_entry->iter != htab->stub_iteration)
11064 {
11065 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11066 br_entry->offset = htab->brlt->size;
11067 htab->brlt->size += 8;
63bc6f6c 11068
ee75fd95 11069 if (htab->relbrlt != NULL)
eea6121a 11070 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11071 else if (info->emitrelocations)
11072 {
11073 htab->brlt->reloc_count += 1;
11074 htab->brlt->flags |= SEC_RELOC;
11075 }
721956f4 11076 }
ad8e1ba5
AM		 11077
11078 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11079 off = (br_entry->offset
11080 + htab->brlt->output_offset
11081 + htab->brlt->output_section->vma
11082 - elf_gp (htab->brlt->output_section->owner)
11083 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11084
176a0d42
AM		 11085 if (info->emitrelocations)
11086 {
11087 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11088 stub_entry->stub_sec->flags |= SEC_RELOC;
11089 }
11090
00f412ee 11091 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11092 {
11093 size = 12;
176a0d42 11094 if (PPC_HA (off) != 0)
ac2df442
AM		 11095 size = 16;
11096 }
11097 else
11098 {
00f412ee 11099 size = 16;
176a0d42 11100 if (PPC_HA (off) != 0)
ac2df442
AM		 11101 size += 4;
11102
11103 if (PPC_HA (r2off) != 0)
11104 size += 4;
00f412ee
AM		 11105 if (PPC_LO (r2off) != 0)
11106 size += 4;
ac2df442 11107 }
721956f4 11108 }
84f5d08e
AM		 11109 else if (info->emitrelocations)
11110 {
11111 stub_entry->stub_sec->reloc_count += 1;
11112 stub_entry->stub_sec->flags |= SEC_RELOC;
11113 }
721956f4
AM		 11114 }
11115
eea6121a 11116 stub_entry->stub_sec->size += size;
b34976b6 11117 return TRUE;
721956f4
AM		 11118}
11119
11120/* Set up various things so that we can make a list of input sections
11121 for each output section included in the link. Returns -1 on error,
cedb70c5 11122 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11123
11124int
e7d1c40c 11125ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4
AM		 11126{
11127 bfd *input_bfd;
734b6cf9 11128 int top_id, top_index, id;
721956f4 11129 asection *section;
734b6cf9 11130 asection **input_list;
721956f4
AM		 11131 bfd_size_type amt;
11132 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11133
4dfe6ac6
NC		 11134 if (htab == NULL)
11135 return -1;
4c52953f 11136
1e2f5b6e 11137 /* Find the top input section id. */
3d6f9012 11138 for (input_bfd = info->input_bfds, top_id = 3;
721956f4 11139 input_bfd != NULL;
c72f2fb2 11140 input_bfd = input_bfd->link.next)
721956f4 11141 {
721956f4
AM		 11142 for (section = input_bfd->sections;
11143 section != NULL;
11144 section = section->next)
11145 {
11146 if (top_id < section->id)
11147 top_id = section->id;
11148 }
11149 }
721956f4 11150
8f3bab57 11151 htab->top_id = top_id;
721956f4 11152 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 11153 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 11154 if (htab->stub_group == NULL)
11155 return -1;
11156
3d6f9012
AM		 11157 /* Set toc_off for com, und, abs and ind sections. */
11158 for (id = 0; id < 3; id++)
11159 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 11160
734b6cf9
AM		 11161 /* We can't use output_bfd->section_count here to find the top output
11162 section index as some sections may have been removed, and
8423293d 11163 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 11164 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM		 11165 section != NULL;
11166 section = section->next)
11167 {
11168 if (top_index < section->index)
11169 top_index = section->index;
11170 }
11171
11172 htab->top_index = top_index;
11173 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 11174 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 11175 htab->input_list = input_list;
11176 if (input_list == NULL)
11177 return -1;
11178
721956f4
AM		 11179 return 1;
11180}
11181
927be08e
AM		 11182/* Set up for first pass at multitoc partitioning. */
11183
11184void
11185ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11186{
11187 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11188
1c865ab2 11189 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11190 htab->toc_bfd = NULL;
11191 htab->toc_first_sec = NULL;
11192}
11193
e717da7e
AM		 11194/* The linker repeatedly calls this function for each TOC input section
11195 and linker generated GOT section. Group input bfds such that the toc
927be08e 11196 within a group is less than 64k in size. */
ad8e1ba5 11197
927be08e 11198bfd_boolean
4ce794b7 11199ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11200{
11201 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11202 bfd_vma addr, off, limit;
ad8e1ba5 11203
4dfe6ac6
NC		 11204 if (htab == NULL)
11205 return FALSE;
11206
927be08e 11207 if (!htab->second_toc_pass)
4c52953f 11208 {
927be08e 11209 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11210 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11211
11212 if (new_bfd)
bf102f86
AM		 11213 {
11214 htab->toc_bfd = isec->owner;
11215 htab->toc_first_sec = isec;
11216 }
927be08e 11217
bf102f86
AM		 11218 addr = isec->output_offset + isec->output_section->vma;
11219 off = addr - htab->toc_curr;
d77c8a4b
AM		 11220 limit = 0x80008000;
11221 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11222 limit = 0x10000;
11223 if (off + isec->size > limit)
bf102f86
AM		 11224 {
11225 addr = (htab->toc_first_sec->output_offset
11226 + htab->toc_first_sec->output_section->vma);
11227 htab->toc_curr = addr;
11228 }
99877b66 11229
927be08e
AM		 11230 /* toc_curr is the base address of this toc group. Set elf_gp
11231 for the input section to be the offset relative to the
11232 output toc base plus 0x8000. Making the input elf_gp an
11233 offset allows us to move the toc as a whole without
11234 recalculating input elf_gp. */
11235 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11236 off += TOC_BASE_OFF;
11237
11238 /* Die if someone uses a linker script that doesn't keep input
11239 file .toc and .got together. */
a4fd3de5
AM		 11240 if (new_bfd
11241 && elf_gp (isec->owner) != 0
927be08e
AM		 11242 && elf_gp (isec->owner) != off)
11243 return FALSE;
11244
11245 elf_gp (isec->owner) = off;
11246 return TRUE;
4c52953f 11247 }
927be08e
AM		 11248
11249 /* During the second pass toc_first_sec points to the start of
11250 a toc group, and toc_curr is used to track the old elf_gp.
11251 We use toc_bfd to ensure we only look at each bfd once. */
11252 if (htab->toc_bfd == isec->owner)
11253 return TRUE;
11254 htab->toc_bfd = isec->owner;
11255
11256 if (htab->toc_first_sec == NULL
11257 || htab->toc_curr != elf_gp (isec->owner))
11258 {
11259 htab->toc_curr = elf_gp (isec->owner);
11260 htab->toc_first_sec = isec;
11261 }
11262 addr = (htab->toc_first_sec->output_offset
11263 + htab->toc_first_sec->output_section->vma);
11264 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11265 elf_gp (isec->owner) = off;
11266
11267 return TRUE;
ad8e1ba5
AM		 11268}
11269
927be08e
AM		 11270/* Called via elf_link_hash_traverse to merge GOT entries for global
11271 symbol H. */
11272
11273static bfd_boolean
11274merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11275{
11276 if (h->root.type == bfd_link_hash_indirect)
11277 return TRUE;
11278
927be08e
AM		 11279 merge_got_entries (&h->got.glist);
11280
11281 return TRUE;
11282}
11283
11284/* Called via elf_link_hash_traverse to allocate GOT entries for global
11285 symbol H. */
11286
11287static bfd_boolean
11288reallocate_got (struct elf_link_hash_entry *h, void *inf)
11289{
11290 struct got_entry *gent;
11291
11292 if (h->root.type == bfd_link_hash_indirect)
11293 return TRUE;
11294
927be08e
AM		 11295 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11296 if (!gent->is_indirect)
11297 allocate_got (h, (struct bfd_link_info *) inf, gent);
11298 return TRUE;
11299}
11300
11301/* Called on the first multitoc pass after the last call to
11302 ppc64_elf_next_toc_section. This function removes duplicate GOT
11303 entries. */
11304
11305bfd_boolean
11306ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11307{
11308 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11309 struct bfd *ibfd, *ibfd2;
11310 bfd_boolean done_something;
11311
11312 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11313
7865406b
AM		 11314 if (!htab->do_multi_toc)
11315 return FALSE;
11316
d0fae19d 11317 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11318 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11319
11320 /* And tlsld_got. */
c72f2fb2 11321 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11322 {
11323 struct got_entry *ent, *ent2;
11324
11325 if (!is_ppc64_elf (ibfd))
11326 continue;
11327
11328 ent = ppc64_tlsld_got (ibfd);
11329 if (!ent->is_indirect
11330 && ent->got.offset != (bfd_vma) -1)
11331 {
c72f2fb2 11332 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11333 {
11334 if (!is_ppc64_elf (ibfd2))
11335 continue;
11336
11337 ent2 = ppc64_tlsld_got (ibfd2);
11338 if (!ent2->is_indirect
11339 && ent2->got.offset != (bfd_vma) -1
11340 && elf_gp (ibfd2) == elf_gp (ibfd))
11341 {
11342 ent2->is_indirect = TRUE;
11343 ent2->got.ent = ent;
11344 }
11345 }
11346 }
11347 }
11348
11349 /* Zap sizes of got sections. */
33e44f2e
AM		 11350 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11351 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11352 htab->got_reli_size = 0;
11353
c72f2fb2 11354 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11355 {
11356 asection *got, *relgot;
11357
11358 if (!is_ppc64_elf (ibfd))
11359 continue;
11360
11361 got = ppc64_elf_tdata (ibfd)->got;
11362 if (got != NULL)
11363 {
11364 got->rawsize = got->size;
11365 got->size = 0;
11366 relgot = ppc64_elf_tdata (ibfd)->relgot;
11367 relgot->rawsize = relgot->size;
11368 relgot->size = 0;
11369 }
11370 }
11371
11372 /* Now reallocate the got, local syms first. We don't need to
11373 allocate section contents again since we never increase size. */
c72f2fb2 11374 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11375 {
11376 struct got_entry **lgot_ents;
11377 struct got_entry **end_lgot_ents;
11378 struct plt_entry **local_plt;
11379 struct plt_entry **end_local_plt;
f961d9dd 11380 unsigned char *lgot_masks;
927be08e
AM		 11381 bfd_size_type locsymcount;
11382 Elf_Internal_Shdr *symtab_hdr;
19e08130 11383 asection *s;
927be08e
AM		 11384
11385 if (!is_ppc64_elf (ibfd))
11386 continue;
11387
11388 lgot_ents = elf_local_got_ents (ibfd);
11389 if (!lgot_ents)
11390 continue;
11391
11392 symtab_hdr = &elf_symtab_hdr (ibfd);
11393 locsymcount = symtab_hdr->sh_info;
11394 end_lgot_ents = lgot_ents + locsymcount;
11395 local_plt = (struct plt_entry **) end_lgot_ents;
11396 end_local_plt = local_plt + locsymcount;
f961d9dd 11397 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11398 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11399 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11400 {
11401 struct got_entry *ent;
11402
11403 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11404 {
19e08130
AM		 11405 unsigned int ent_size = 8;
11406 unsigned int rel_size = sizeof (Elf64_External_Rela);
11407
d0fae19d
AM		 11408 ent->got.offset = s->size;
11409 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11410 {
19e08130
AM		 11411 ent_size *= 2;
11412 rel_size *= 2;
11413 }
11414 s->size += ent_size;
11415 if ((*lgot_masks & PLT_IFUNC) != 0)
11416 {
33e44f2e 11417 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11418 htab->got_reli_size += rel_size;
11419 }
11420 else if (info->shared)
11421 {
11422 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11423 srel->size += rel_size;
d0fae19d
AM		 11424 }
11425 }
927be08e
AM		 11426 }
11427 }
11428
11429 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11430
c72f2fb2 11431 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11432 {
11433 struct got_entry *ent;
11434
11435 if (!is_ppc64_elf (ibfd))
11436 continue;
11437
11438 ent = ppc64_tlsld_got (ibfd);
11439 if (!ent->is_indirect
11440 && ent->got.offset != (bfd_vma) -1)
11441 {
11442 asection *s = ppc64_elf_tdata (ibfd)->got;
11443 ent->got.offset = s->size;
11444 s->size += 16;
11445 if (info->shared)
11446 {
11447 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11448 srel->size += sizeof (Elf64_External_Rela);
11449 }
11450 }
11451 }
11452
33e44f2e 11453 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11454 if (!done_something)
c72f2fb2 11455 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11456 {
11457 asection *got;
11458
11459 if (!is_ppc64_elf (ibfd))
11460 continue;
11461
11462 got = ppc64_elf_tdata (ibfd)->got;
11463 if (got != NULL)
11464 {
11465 done_something = got->rawsize != got->size;
11466 if (done_something)
11467 break;
11468 }
11469 }
11470
11471 if (done_something)
e7d1c40c 11472 (*htab->params->layout_sections_again) ();
927be08e
AM		 11473
11474 /* Set up for second pass over toc sections to recalculate elf_gp
11475 on input sections. */
11476 htab->toc_bfd = NULL;
11477 htab->toc_first_sec = NULL;
11478 htab->second_toc_pass = TRUE;
11479 return done_something;
11480}
11481
11482/* Called after second pass of multitoc partitioning. */
11483
11484void
11485ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11486{
11487 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11488
11489 /* After the second pass, toc_curr tracks the TOC offset used
11490 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11491 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11492}
11493
9b5ecbd0
AM		 11494/* No toc references were found in ISEC. If the code in ISEC makes no
11495 calls, then there's no need to use toc adjusting stubs when branching
11496 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11497 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11498 needed, and 2 if a cyclical call-graph was found but no other reason
11499 for a stub was detected. If called from the top level, a return of
11500 2 means the same as a return of 0. */
9b5ecbd0
AM		 11501
11502static int
4ce794b7 11503toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11504{
9b5ecbd0 11505 int ret;
70cc837d
AM		 11506
11507 /* Mark this section as checked. */
11508 isec->call_check_done = 1;
9b5ecbd0 11509
772119ce
AM		 11510 /* We know none of our code bearing sections will need toc stubs. */
11511 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11512 return 0;
11513
eea6121a 11514 if (isec->size == 0)
082c50f8
AM		 11515 return 0;
11516
4c52953f
AM		 11517 if (isec->output_section == NULL)
11518 return 0;
11519
4c52953f 11520 ret = 0;
70cc837d 11521 if (isec->reloc_count != 0)
9b5ecbd0 11522 {
70cc837d
AM		 11523 Elf_Internal_Rela *relstart, *rel;
11524 Elf_Internal_Sym *local_syms;
11525 struct ppc_link_hash_table *htab;
2917689a 11526
70cc837d
AM		 11527 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11528 info->keep_memory);
11529 if (relstart == NULL)
11530 return -1;
90aecf7a 11531
70cc837d
AM		 11532 /* Look for branches to outside of this section. */
11533 local_syms = NULL;
11534 htab = ppc_hash_table (info);
11535 if (htab == NULL)
11536 return -1;
4c52953f 11537
70cc837d 11538 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11539 {
70cc837d
AM		 11540 enum elf_ppc64_reloc_type r_type;
11541 unsigned long r_symndx;
11542 struct elf_link_hash_entry *h;
11543 struct ppc_link_hash_entry *eh;
11544 Elf_Internal_Sym *sym;
11545 asection *sym_sec;
11546 struct _opd_sec_data *opd;
11547 bfd_vma sym_value;
11548 bfd_vma dest;
11549
11550 r_type = ELF64_R_TYPE (rel->r_info);
11551 if (r_type != R_PPC64_REL24
11552 && r_type != R_PPC64_REL14
11553 && r_type != R_PPC64_REL14_BRTAKEN
11554 && r_type != R_PPC64_REL14_BRNTAKEN)
11555 continue;
4c52953f 11556
70cc837d
AM		 11557 r_symndx = ELF64_R_SYM (rel->r_info);
11558 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11559 isec->owner))
4c52953f 11560 {
70cc837d
AM		 11561 ret = -1;
11562 break;
11563 }
4c52953f 11564
70cc837d
AM		 11565 /* Calls to dynamic lib functions go through a plt call stub
11566 that uses r2. */
11567 eh = (struct ppc_link_hash_entry *) h;
11568 if (eh != NULL
11569 && (eh->elf.plt.plist != NULL
11570 || (eh->oh != NULL
11571 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11572 {
11573 ret = 1;
11574 break;
4c52953f
AM		 11575 }
11576
70cc837d
AM		 11577 if (sym_sec == NULL)
11578 /* Ignore other undefined symbols. */
4c52953f 11579 continue;
4c52953f 11580
70cc837d
AM		 11581 /* Assume branches to other sections not included in the
11582 link need stubs too, to cover -R and absolute syms. */
11583 if (sym_sec->output_section == NULL)
11584 {
11585 ret = 1;
11586 break;
11587 }
4c52953f 11588
70cc837d
AM		 11589 if (h == NULL)
11590 sym_value = sym->st_value;
11591 else
11592 {
11593 if (h->root.type != bfd_link_hash_defined
11594 && h->root.type != bfd_link_hash_defweak)
11595 abort ();
11596 sym_value = h->root.u.def.value;
11597 }
11598 sym_value += rel->r_addend;
4c52953f 11599
70cc837d
AM		 11600 /* If this branch reloc uses an opd sym, find the code section. */
11601 opd = get_opd_info (sym_sec);
11602 if (opd != NULL)
11603 {
11604 if (h == NULL && opd->adjust != NULL)
11605 {
11606 long adjust;
4c52953f 11607
51aecdc5 11608 adjust = opd->adjust[OPD_NDX (sym->st_value)];
70cc837d
AM		 11609 if (adjust == -1)
11610 /* Assume deleted functions won't ever be called. */
11611 continue;
11612 sym_value += adjust;
11613 }
4c52953f 11614
aef36ac1
AM		 11615 dest = opd_entry_value (sym_sec, sym_value,
11616 &sym_sec, NULL, FALSE);
70cc837d
AM		 11617 if (dest == (bfd_vma) -1)
11618 continue;
11619 }
11620 else
11621 dest = (sym_value
11622 + sym_sec->output_offset
11623 + sym_sec->output_section->vma);
4c52953f 11624
70cc837d
AM		 11625 /* Ignore branch to self. */
11626 if (sym_sec == isec)
11627 continue;
4c52953f 11628
70cc837d
AM		 11629 /* If the called function uses the toc, we need a stub. */
11630 if (sym_sec->has_toc_reloc
11631 || sym_sec->makes_toc_func_call)
4c52953f 11632 {
70cc837d 11633 ret = 1;
4c52953f
AM		 11634 break;
11635 }
70cc837d
AM		 11636
11637 /* Assume any branch that needs a long branch stub might in fact
11638 need a plt_branch stub. A plt_branch stub uses r2. */
11639 else if (dest - (isec->output_offset
11640 + isec->output_section->vma
6911b7dc
AM		 11641 + rel->r_offset) + (1 << 25)
11642 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11643 ? h->other
11644 : sym->st_other))
4c52953f 11645 {
70cc837d
AM		 11646 ret = 1;
11647 break;
11648 }
11649
11650 /* If calling back to a section in the process of being
11651 tested, we can't say for sure that no toc adjusting stubs
11652 are needed, so don't return zero. */
11653 else if (sym_sec->call_check_in_progress)
11654 ret = 2;
11655
11656 /* Branches to another section that itself doesn't have any TOC
11657 references are OK. Recursively call ourselves to check. */
11658 else if (!sym_sec->call_check_done)
11659 {
11660 int recur;
11661
11662 /* Mark current section as indeterminate, so that other
11663 sections that call back to current won't be marked as
11664 known. */
11665 isec->call_check_in_progress = 1;
11666 recur = toc_adjusting_stub_needed (info, sym_sec);
11667 isec->call_check_in_progress = 0;
11668
4c52953f
AM		 11669 if (recur != 0)
11670 {
70cc837d
AM		 11671 ret = recur;
11672 if (recur != 2)
11673 break;
4c52953f
AM		 11674 }
11675 }
4c52953f 11676 }
70cc837d
AM		 11677
11678 if (local_syms != NULL
11679 && (elf_symtab_hdr (isec->owner).contents
11680 != (unsigned char *) local_syms))
11681 free (local_syms);
11682 if (elf_section_data (isec)->relocs != relstart)
11683 free (relstart);
9b5ecbd0
AM		 11684 }
11685
70cc837d
AM		 11686 if ((ret & 1) == 0
11687 && isec->map_head.s != NULL
11688 && (strcmp (isec->output_section->name, ".init") == 0
11689 || strcmp (isec->output_section->name, ".fini") == 0))
11690 {
11691 if (isec->map_head.s->has_toc_reloc
11692 || isec->map_head.s->makes_toc_func_call)
11693 ret = 1;
11694 else if (!isec->map_head.s->call_check_done)
11695 {
11696 int recur;
11697 isec->call_check_in_progress = 1;
11698 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11699 isec->call_check_in_progress = 0;
11700 if (recur != 0)
11701 ret = recur;
11702 }
11703 }
11704
11705 if (ret == 1)
11706 isec->makes_toc_func_call = 1;
4c52953f 11707
9b5ecbd0
AM		 11708 return ret;
11709}
11710
721956f4
AM		 11711/* The linker repeatedly calls this function for each input section,
11712 in the order that input sections are linked into output sections.
11713 Build lists of input sections to determine groupings between which
11714 we may insert linker stubs. */
11715
9b5ecbd0 11716bfd_boolean
4ce794b7 11717ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11718{
11719 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11720
4dfe6ac6
NC		 11721 if (htab == NULL)
11722 return FALSE;
11723
734b6cf9
AM		 11724 if ((isec->output_section->flags & SEC_CODE) != 0
11725 && isec->output_section->index <= htab->top_index)
721956f4 11726 {
734b6cf9 11727 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11728 /* Steal the link_sec pointer for our list. */
721956f4 11729#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 11730 /* This happens to make the list in reverse order,
11731 which is what we want. */
734b6cf9
AM		 11732 PREV_SEC (isec) = *list;
11733 *list = isec;
721956f4 11734 }
ad8e1ba5 11735
4c52953f 11736 if (htab->multi_toc_needed)
9b5ecbd0 11737 {
8b974ba3
AM		 11738 /* Analyse sections that aren't already flagged as needing a
11739 valid toc pointer. Exclude .fixup for the linux kernel.
11740 .fixup contains branches, but only back to the function that
11741 hit an exception. */
11742 if (!(isec->has_toc_reloc
11743 || (isec->flags & SEC_CODE) == 0
11744 || strcmp (isec->name, ".fixup") == 0
11745 || isec->call_check_done))
11746 {
11747 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11748 return FALSE;
8b974ba3
AM		 11749 }
11750 /* Make all sections use the TOC assigned for this object file.
11751 This will be wrong for pasted sections; We fix that in
11752 check_pasted_section(). */
11753 if (elf_gp (isec->owner) != 0)
11754 htab->toc_curr = elf_gp (isec->owner);
11755 }
11756
ad8e1ba5 11757 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11758 return TRUE;
721956f4
AM		 11759}
11760
70cc837d
AM		 11761/* Check that all .init and .fini sections use the same toc, if they
11762 have toc relocs. */
11763
11764static bfd_boolean
11765check_pasted_section (struct bfd_link_info *info, const char *name)
11766{
11767 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11768
11769 if (o != NULL)
11770 {
11771 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11772 bfd_vma toc_off = 0;
11773 asection *i;
11774
11775 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11776 if (i->has_toc_reloc)
11777 {
11778 if (toc_off == 0)
11779 toc_off = htab->stub_group[i->id].toc_off;
11780 else if (toc_off != htab->stub_group[i->id].toc_off)
11781 return FALSE;
11782 }
6683a28d
AM		 11783
11784 if (toc_off == 0)
11785 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11786 if (i->makes_toc_func_call)
11787 {
11788 toc_off = htab->stub_group[i->id].toc_off;
11789 break;
11790 }
11791
70cc837d
AM		 11792 /* Make sure the whole pasted function uses the same toc offset. */
11793 if (toc_off != 0)
11794 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11795 htab->stub_group[i->id].toc_off = toc_off;
11796 }
11797 return TRUE;
11798}
11799
11800bfd_boolean
11801ppc64_elf_check_init_fini (struct bfd_link_info *info)
11802{
11803 return (check_pasted_section (info, ".init")
11804 & check_pasted_section (info, ".fini"));
11805}
11806
721956f4
AM		 11807/* See whether we can group stub sections together. Grouping stub
11808 sections may result in fewer stubs. More importantly, we need to
11809 put all .init* and .fini* stubs at the beginning of the .init or
11810 .fini output sections respectively, because glibc splits the
11811 _init and _fini functions into multiple parts. Putting a stub in
11812 the middle of a function is not a good idea. */
11813
11814static void
4ce794b7
AM		 11815group_sections (struct ppc_link_hash_table *htab,
11816 bfd_size_type stub_group_size,
11817 bfd_boolean stubs_always_before_branch)
721956f4 11818{
7c8fe5c4
AM		 11819 asection **list;
11820 bfd_size_type stub14_group_size;
11821 bfd_boolean suppress_size_errors;
11822
11823 suppress_size_errors = FALSE;
0cfb0717 11824 stub14_group_size = stub_group_size >> 10;
7c8fe5c4
AM		 11825 if (stub_group_size == 1)
11826 {
11827 /* Default values. */
11828 if (stubs_always_before_branch)
11829 {
11830 stub_group_size = 0x1e00000;
11831 stub14_group_size = 0x7800;
11832 }
11833 else
11834 {
11835 stub_group_size = 0x1c00000;
11836 stub14_group_size = 0x7000;
11837 }
11838 suppress_size_errors = TRUE;
11839 }
11840
11841 list = htab->input_list + htab->top_index;
734b6cf9 11842 do
721956f4 11843 {
734b6cf9
AM		 11844 asection *tail = *list;
11845 while (tail != NULL)
721956f4 11846 {
734b6cf9
AM		 11847 asection *curr;
11848 asection *prev;
11849 bfd_size_type total;
11850 bfd_boolean big_sec;
11851 bfd_vma curr_toc;
11852
11853 curr = tail;
eea6121a 11854 total = tail->size;
6bee8834
AM		 11855 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11856 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11857 ? stub14_group_size : stub_group_size);
11858 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11859 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11860 tail->owner, tail);
734b6cf9
AM		 11861 curr_toc = htab->stub_group[tail->id].toc_off;
11862
11863 while ((prev = PREV_SEC (curr)) != NULL
11864 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11865 < (ppc64_elf_section_data (prev) != NULL
11866 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11867 ? stub14_group_size : stub_group_size))
ad8e1ba5 11868 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11869 curr = prev;
11870
11871 /* OK, the size from the start of CURR to the end is less
11872 than stub_group_size and thus can be handled by one stub
11873 section. (or the tail section is itself larger than
11874 stub_group_size, in which case we may be toast.) We
11875 should really be keeping track of the total size of stubs
11876 added here, as stubs contribute to the final output
11877 section size. That's a little tricky, and this way will
11878 only break if stubs added make the total size more than
11879 2^25, ie. for the default stub_group_size, if stubs total
11880 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11881 do
721956f4
AM		 11882 {
11883 prev = PREV_SEC (tail);
734b6cf9 11884 /* Set up this stub group. */
721956f4
AM		 11885 htab->stub_group[tail->id].link_sec = curr;
11886 }
734b6cf9
AM		 11887 while (tail != curr && (tail = prev) != NULL);
11888
11889 /* But wait, there's more! Input sections up to stub_group_size
11890 bytes before the stub section can be handled by it too.
11891 Don't do this if we have a really large section after the
11892 stubs, as adding more stubs increases the chance that
11893 branches may not reach into the stub section. */
11894 if (!stubs_always_before_branch && !big_sec)
11895 {
11896 total = 0;
11897 while (prev != NULL
11898 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11899 < (ppc64_elf_section_data (prev) != NULL
11900 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11901 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 11902 && htab->stub_group[prev->id].toc_off == curr_toc)
11903 {
11904 tail = prev;
11905 prev = PREV_SEC (tail);
11906 htab->stub_group[tail->id].link_sec = curr;
11907 }
11908 }
11909 tail = prev;
721956f4
AM		 11910 }
11911 }
734b6cf9
AM		 11912 while (list-- != htab->input_list);
11913 free (htab->input_list);
721956f4
AM		 11914#undef PREV_SEC
11915}
11916
58d180e8
AM		 11917static const unsigned char glink_eh_frame_cie[] =
11918{
11919 0, 0, 0, 16, /* length. */
11920 0, 0, 0, 0, /* id. */
11921 1, /* CIE version. */
11922 'z', 'R', 0, /* Augmentation string. */
11923 4, /* Code alignment. */
11924 0x78, /* Data alignment. */
11925 65, /* RA reg. */
11926 1, /* Augmentation size. */
11927 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
da44f4e5
AM		 11928 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11929 0, 0, 0, 0
58d180e8
AM		 11930};
11931
d969d15f
AM		 11932/* Stripping output sections is normally done before dynamic section
11933 symbols have been allocated. This function is called later, and
11934 handles cases like htab->brlt which is mapped to its own output
11935 section. */
11936
11937static void
11938maybe_strip_output (struct bfd_link_info *info, asection *isec)
11939{
11940 if (isec->size == 0
11941 && isec->output_section->size == 0
53d8967a 11942 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11943 && !bfd_section_removed_from_list (info->output_bfd,
11944 isec->output_section)
11945 && elf_section_data (isec->output_section)->dynindx == 0)
11946 {
11947 isec->output_section->flags |= SEC_EXCLUDE;
11948 bfd_section_list_remove (info->output_bfd, isec->output_section);
11949 info->output_bfd->section_count--;
11950 }
11951}
11952
721956f4
AM		 11953/* Determine and set the size of the stub section for a final link.
11954
11955 The basic idea here is to examine all the relocations looking for
11956 PC-relative calls to a target that is unreachable with a "bl"
11957 instruction. */
11958
b34976b6 11959bfd_boolean
e7d1c40c 11960ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11961{
11962 bfd_size_type stub_group_size;
b34976b6 11963 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11964 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11965
4dfe6ac6
NC		 11966 if (htab == NULL)
11967 return FALSE;
11968
e7d1c40c
AM		 11969 if (htab->params->plt_thread_safe == -1 && !info->executable)
11970 htab->params->plt_thread_safe = 1;
b9e5796b 11971 if (!htab->opd_abi)
e7d1c40c
AM		 11972 htab->params->plt_thread_safe = 0;
11973 else if (htab->params->plt_thread_safe == -1)
794e51c0 11974 {
e2458743 11975 static const char *const thread_starter[] =
794e51c0
AM		 11976 {
11977 "pthread_create",
11978 /* libstdc++ */
11979 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11980 /* librt */
11981 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11982 "mq_notify", "create_timer",
11983 /* libanl */
11984 "getaddrinfo_a",
11985 /* libgomp */
2300b5a1 11986 "GOMP_parallel",
794e51c0 11987 "GOMP_parallel_start",
2300b5a1 11988 "GOMP_parallel_loop_static",
794e51c0 11989 "GOMP_parallel_loop_static_start",
2300b5a1 11990 "GOMP_parallel_loop_dynamic",
794e51c0 11991 "GOMP_parallel_loop_dynamic_start",
2300b5a1 11992 "GOMP_parallel_loop_guided",
794e51c0 11993 "GOMP_parallel_loop_guided_start",
2300b5a1 11994 "GOMP_parallel_loop_runtime",
794e51c0 11995 "GOMP_parallel_loop_runtime_start",
2300b5a1 11996 "GOMP_parallel_sections",
68ffbac6 11997 "GOMP_parallel_sections_start",
f9dffbf0
AM		 11998 /* libgo */
11999 "__go_go",
794e51c0
AM		 12000 };
12001 unsigned i;
12002
12003 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
12004 {
12005 struct elf_link_hash_entry *h;
12006 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12007 FALSE, FALSE, TRUE);
e7d1c40c
AM		 12008 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12009 if (htab->params->plt_thread_safe)
794e51c0
AM		 12010 break;
12011 }
12012 }
e7d1c40c
AM		 12013 stubs_always_before_branch = htab->params->group_size < 0;
12014 if (htab->params->group_size < 0)
12015 stub_group_size = -htab->params->group_size;
721956f4 12016 else
e7d1c40c 12017 stub_group_size = htab->params->group_size;
721956f4
AM		 12018
12019 group_sections (htab, stub_group_size, stubs_always_before_branch);
12020
721956f4
AM		 12021 while (1)
12022 {
12023 bfd *input_bfd;
12024 unsigned int bfd_indx;
12025 asection *stub_sec;
721956f4
AM		 12026
12027 htab->stub_iteration += 1;
721956f4
AM		 12028
12029 for (input_bfd = info->input_bfds, bfd_indx = 0;
12030 input_bfd != NULL;
c72f2fb2 12031 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 12032 {
12033 Elf_Internal_Shdr *symtab_hdr;
12034 asection *section;
6cdc0ccc 12035 Elf_Internal_Sym *local_syms = NULL;
721956f4 12036
0c8d6e5c 12037 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 12038 continue;
12039
721956f4 12040 /* We'll need the symbol table in a second. */
0ffa91dd 12041 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 12042 if (symtab_hdr->sh_info == 0)
12043 continue;
12044
721956f4
AM		 12045 /* Walk over each section attached to the input bfd. */
12046 for (section = input_bfd->sections;
12047 section != NULL;
12048 section = section->next)
12049 {
721956f4 12050 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12051
12052 /* If there aren't any relocs, then there's nothing more
12053 to do. */
12054 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12055 || (section->flags & SEC_ALLOC) == 0
12056 || (section->flags & SEC_LOAD) == 0
12057 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12058 || section->reloc_count == 0)
12059 continue;
12060
12061 /* If this section is a link-once section that will be
12062 discarded, then don't create any stubs. */
12063 if (section->output_section == NULL
927be08e 12064 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12065 continue;
12066
1e2f5b6e
AM		 12067 /* Get the relocs. */
12068 internal_relocs
4ce794b7 12069 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12070 info->keep_memory);
721956f4 12071 if (internal_relocs == NULL)
1e2f5b6e 12072 goto error_ret_free_local;
721956f4
AM		 12073
12074 /* Now examine each relocation. */
12075 irela = internal_relocs;
12076 irelaend = irela + section->reloc_count;
12077 for (; irela < irelaend; irela++)
12078 {
4ce794b7
AM		 12079 enum elf_ppc64_reloc_type r_type;
12080 unsigned int r_indx;
721956f4
AM		 12081 enum ppc_stub_type stub_type;
12082 struct ppc_stub_hash_entry *stub_entry;
8387904d 12083 asection *sym_sec, *code_sec;
e054468f 12084 bfd_vma sym_value, code_value;
721956f4 12085 bfd_vma destination;
6911b7dc 12086 unsigned long local_off;
8843416a 12087 bfd_boolean ok_dest;
721956f4 12088 struct ppc_link_hash_entry *hash;
8387904d 12089 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12090 struct elf_link_hash_entry *h;
12091 Elf_Internal_Sym *sym;
721956f4
AM		 12092 char *stub_name;
12093 const asection *id_sec;
74f0fb50 12094 struct _opd_sec_data *opd;
e054468f 12095 struct plt_entry *plt_ent;
721956f4
AM		 12096
12097 r_type = ELF64_R_TYPE (irela->r_info);
12098 r_indx = ELF64_R_SYM (irela->r_info);
12099
4ce794b7 12100 if (r_type >= R_PPC64_max)
721956f4
AM		 12101 {
12102 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12103 goto error_ret_free_internal;
721956f4
AM		 12104 }
12105
12106 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12107 if (r_type != R_PPC64_REL24
12108 && r_type != R_PPC64_REL14
12109 && r_type != R_PPC64_REL14_BRTAKEN
12110 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12111 continue;
12112
12113 /* Now determine the call target, its name, value,
12114 section. */
411e1bfb
AM		 12115 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12116 r_indx, input_bfd))
12117 goto error_ret_free_internal;
12118 hash = (struct ppc_link_hash_entry *) h;
12119
8843416a 12120 ok_dest = FALSE;
8387904d 12121 fdh = NULL;
7fe2b9a6 12122 sym_value = 0;
411e1bfb 12123 if (hash == NULL)
721956f4 12124 {
411e1bfb 12125 sym_value = sym->st_value;
8843416a 12126 ok_dest = TRUE;
721956f4 12127 }
7fe2b9a6
AM		 12128 else if (hash->elf.root.type == bfd_link_hash_defined
12129 || hash->elf.root.type == bfd_link_hash_defweak)
12130 {
12131 sym_value = hash->elf.root.u.def.value;
12132 if (sym_sec->output_section != NULL)
12133 ok_dest = TRUE;
12134 }
12135 else if (hash->elf.root.type == bfd_link_hash_undefweak
12136 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12137 {
99877b66 12138 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12139 use the func descriptor sym instead if it is
12140 defined. */
ceb1f1ef 12141 if (hash->elf.root.root.string[0] == '.'
b31867b6 12142 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12143 {
8387904d
AM		 12144 if (fdh->elf.root.type == bfd_link_hash_defined
12145 || fdh->elf.root.type == bfd_link_hash_defweak)
12146 {
12147 sym_sec = fdh->elf.root.u.def.section;
12148 sym_value = fdh->elf.root.u.def.value;
12149 if (sym_sec->output_section != NULL)
12150 ok_dest = TRUE;
12151 }
99877b66
AM		 12152 else
12153 fdh = NULL;
8387904d 12154 }
7fe2b9a6
AM		 12155 }
12156 else
12157 {
12158 bfd_set_error (bfd_error_bad_value);
12159 goto error_ret_free_internal;
721956f4
AM		 12160 }
12161
8843416a 12162 destination = 0;
6911b7dc 12163 local_off = 0;
8843416a
AM		 12164 if (ok_dest)
12165 {
12166 sym_value += irela->r_addend;
12167 destination = (sym_value
12168 + sym_sec->output_offset
12169 + sym_sec->output_section->vma);
6911b7dc
AM		 12170 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12171 ? hash->elf.other
12172 : sym->st_other);
8843416a
AM		 12173 }
12174
8387904d 12175 code_sec = sym_sec;
e054468f 12176 code_value = sym_value;
74f0fb50
AM		 12177 opd = get_opd_info (sym_sec);
12178 if (opd != NULL)
8387904d
AM		 12179 {
12180 bfd_vma dest;
12181
74f0fb50 12182 if (hash == NULL && opd->adjust != NULL)
8387904d 12183 {
51aecdc5 12184 long adjust = opd->adjust[OPD_NDX (sym_value)];
8387904d
AM		 12185 if (adjust == -1)
12186 continue;
e054468f 12187 code_value += adjust;
8387904d
AM		 12188 sym_value += adjust;
12189 }
12190 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12191 &code_sec, &code_value, FALSE);
8387904d
AM		 12192 if (dest != (bfd_vma) -1)
12193 {
12194 destination = dest;
12195 if (fdh != NULL)
12196 {
12197 /* Fixup old ABI sym to point at code
12198 entry. */
99877b66 12199 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12200 hash->elf.root.u.def.section = code_sec;
e054468f 12201 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12202 }
12203 }
12204 }
12205
721956f4 12206 /* Determine what (if any) linker stub is needed. */
e054468f 12207 plt_ent = NULL;
721956f4 12208 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12209 &plt_ent, destination,
12210 local_off);
ad8e1ba5
AM		 12211
12212 if (stub_type != ppc_stub_plt_call)
12213 {
12214 /* Check whether we need a TOC adjusting stub.
12215 Since the linker pastes together pieces from
12216 different object files when creating the
12217 _init and _fini functions, it may be that a
12218 call to what looks like a local sym is in
12219 fact a call needing a TOC adjustment. */
8387904d
AM		 12220 if (code_sec != NULL
12221 && code_sec->output_section != NULL
12222 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 12223 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 12224 && (code_sec->has_toc_reloc
12225 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12226 stub_type = ppc_stub_long_branch_r2off;
12227 }
12228
721956f4
AM		 12229 if (stub_type == ppc_stub_none)
12230 continue;
12231
411e1bfb
AM		 12232 /* __tls_get_addr calls might be eliminated. */
12233 if (stub_type != ppc_stub_plt_call
12234 && hash != NULL
8387904d
AM		 12235 && (hash == htab->tls_get_addr
12236 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12237 && section->has_tls_reloc
12238 && irela != internal_relocs)
12239 {
12240 /* Get tls info. */
f961d9dd 12241 unsigned char *tls_mask;
411e1bfb 12242
3a71aa26 12243 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12244 irela - 1, input_bfd))
12245 goto error_ret_free_internal;
e7b938ca 12246 if (*tls_mask != 0)
411e1bfb
AM		 12247 continue;
12248 }
12249
3b421ab3
AM		 12250 if (stub_type == ppc_stub_plt_call
12251 && irela + 1 < irelaend
12252 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12253 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12254 {
12255 if (!tocsave_find (htab, INSERT,
12256 &local_syms, irela + 1, input_bfd))
12257 goto error_ret_free_internal;
12258 }
12259 else if (stub_type == ppc_stub_plt_call)
12260 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12261
721956f4
AM		 12262 /* Support for grouping stub sections. */
12263 id_sec = htab->stub_group[section->id].link_sec;
12264
12265 /* Get the name of this stub. */
12266 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12267 if (!stub_name)
12268 goto error_ret_free_internal;
12269
12270 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12271 stub_name, FALSE, FALSE);
721956f4
AM		 12272 if (stub_entry != NULL)
12273 {
12274 /* The proper stub has already been created. */
12275 free (stub_name);
794e51c0
AM		 12276 if (stub_type == ppc_stub_plt_call_r2save)
12277 stub_entry->stub_type = stub_type;
721956f4
AM		 12278 continue;
12279 }
12280
25f53a85 12281 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12282 if (stub_entry == NULL)
12283 {
12284 free (stub_name);
6cdc0ccc
AM		 12285 error_ret_free_internal:
12286 if (elf_section_data (section)->relocs == NULL)
12287 free (internal_relocs);
12288 error_ret_free_local:
12289 if (local_syms != NULL
12290 && (symtab_hdr->contents
12291 != (unsigned char *) local_syms))
12292 free (local_syms);
b34976b6 12293 return FALSE;
721956f4
AM		 12294 }
12295
ad8e1ba5 12296 stub_entry->stub_type = stub_type;
794e51c0
AM		 12297 if (stub_type != ppc_stub_plt_call
12298 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12299 {
12300 stub_entry->target_value = code_value;
12301 stub_entry->target_section = code_sec;
12302 }
12303 else
12304 {
12305 stub_entry->target_value = sym_value;
12306 stub_entry->target_section = sym_sec;
12307 }
721956f4 12308 stub_entry->h = hash;
e054468f 12309 stub_entry->plt_ent = plt_ent;
6911b7dc 12310 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12311
12312 if (stub_entry->h != NULL)
12313 htab->stub_globals += 1;
721956f4
AM		 12314 }
12315
12316 /* We're done with the internal relocs, free them. */
6cdc0ccc 12317 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12318 free (internal_relocs);
721956f4 12319 }
6cdc0ccc
AM		 12320
12321 if (local_syms != NULL
12322 && symtab_hdr->contents != (unsigned char *) local_syms)
12323 {
12324 if (!info->keep_memory)
12325 free (local_syms);
12326 else
12327 symtab_hdr->contents = (unsigned char *) local_syms;
12328 }
721956f4
AM		 12329 }
12330
5c3dead3 12331 /* We may have added some stubs. Find out the new size of the
721956f4 12332 stub sections. */
e7d1c40c 12333 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12334 stub_sec != NULL;
12335 stub_sec = stub_sec->next)
e717da7e 12336 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12337 {
5c3dead3 12338 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12339 stub_sec->size = 0;
12340 stub_sec->reloc_count = 0;
84f5d08e 12341 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12342 }
eea6121a
AM		 12343
12344 htab->brlt->size = 0;
84f5d08e
AM		 12345 htab->brlt->reloc_count = 0;
12346 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12347 if (htab->relbrlt != NULL)
eea6121a 12348 htab->relbrlt->size = 0;
721956f4 12349
63bc6f6c 12350 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12351
176a0d42
AM		 12352 if (info->emitrelocations
12353 && htab->glink != NULL && htab->glink->size != 0)
12354 {
12355 htab->glink->reloc_count = 1;
12356 htab->glink->flags |= SEC_RELOC;
12357 }
12358
58d180e8
AM		 12359 if (htab->glink_eh_frame != NULL
12360 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12361 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12362 {
4bbe044a 12363 size_t size = 0, align;
58d180e8 12364
e7d1c40c 12365 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12366 stub_sec != NULL;
12367 stub_sec = stub_sec->next)
12368 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
da44f4e5 12369 size += 24;
58d180e8
AM		 12370 if (htab->glink != NULL && htab->glink->size != 0)
12371 size += 24;
12372 if (size != 0)
12373 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12374 align = 1;
12375 align <<= htab->glink_eh_frame->output_section->alignment_power;
12376 align -= 1;
12377 size = (size + align) & ~align;
58d180e8
AM		 12378 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12379 htab->glink_eh_frame->size = size;
12380 }
12381
e7d1c40c
AM		 12382 if (htab->params->plt_stub_align != 0)
12383 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12384 stub_sec != NULL;
12385 stub_sec = stub_sec->next)
12386 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12387 stub_sec->size = ((stub_sec->size
12388 + (1 << htab->params->plt_stub_align) - 1)
12389 & (-1 << htab->params->plt_stub_align));
794e51c0 12390
e7d1c40c 12391 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12392 stub_sec != NULL;
12393 stub_sec = stub_sec->next)
12394 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12395 && stub_sec->rawsize != stub_sec->size)
12396 break;
12397
12398 /* Exit from this loop when no stubs have been added, and no stubs
12399 have changed size. */
58d180e8
AM		 12400 if (stub_sec == NULL
12401 && (htab->glink_eh_frame == NULL
12402 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12403 break;
12404
721956f4 12405 /* Ask the linker to do its stuff. */
e7d1c40c 12406 (*htab->params->layout_sections_again) ();
721956f4
AM		 12407 }
12408
da44f4e5
AM		 12409 if (htab->glink_eh_frame != NULL
12410 && htab->glink_eh_frame->size != 0)
12411 {
12412 bfd_vma val;
12413 bfd_byte *p, *last_fde;
12414 size_t last_fde_len, size, align, pad;
12415 asection *stub_sec;
12416
12417 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12418 if (p == NULL)
12419 return FALSE;
12420 htab->glink_eh_frame->contents = p;
12421 last_fde = p;
12422
12423 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12424 /* CIE length (rewrite in case little-endian). */
12425 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12426 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12427 p += sizeof (glink_eh_frame_cie);
12428
12429 for (stub_sec = htab->params->stub_bfd->sections;
12430 stub_sec != NULL;
12431 stub_sec = stub_sec->next)
12432 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12433 {
12434 last_fde = p;
12435 last_fde_len = 20;
12436 /* FDE length. */
12437 bfd_put_32 (htab->elf.dynobj, 20, p);
12438 p += 4;
12439 /* CIE pointer. */
12440 val = p - htab->glink_eh_frame->contents;
12441 bfd_put_32 (htab->elf.dynobj, val, p);
12442 p += 4;
12443 /* Offset to stub section, written later. */
12444 p += 4;
12445 /* stub section size. */
12446 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12447 p += 4;
12448 /* Augmentation. */
12449 p += 1;
12450 /* Pad. */
12451 p += 7;
12452 }
12453 if (htab->glink != NULL && htab->glink->size != 0)
12454 {
12455 last_fde = p;
12456 last_fde_len = 20;
12457 /* FDE length. */
12458 bfd_put_32 (htab->elf.dynobj, 20, p);
12459 p += 4;
12460 /* CIE pointer. */
12461 val = p - htab->glink_eh_frame->contents;
12462 bfd_put_32 (htab->elf.dynobj, val, p);
12463 p += 4;
12464 /* Offset to .glink, written later. */
12465 p += 4;
12466 /* .glink size. */
12467 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12468 p += 4;
12469 /* Augmentation. */
12470 p += 1;
12471
12472 *p++ = DW_CFA_advance_loc + 1;
12473 *p++ = DW_CFA_register;
12474 *p++ = 65;
12475 *p++ = 12;
12476 *p++ = DW_CFA_advance_loc + 4;
12477 *p++ = DW_CFA_restore_extended;
12478 *p++ = 65;
12479 }
12480 /* Subsume any padding into the last FDE if user .eh_frame
12481 sections are aligned more than glink_eh_frame. Otherwise any
12482 zero padding will be seen as a terminator. */
12483 size = p - htab->glink_eh_frame->contents;
12484 align = 1;
12485 align <<= htab->glink_eh_frame->output_section->alignment_power;
12486 align -= 1;
12487 pad = ((size + align) & ~align) - size;
12488 htab->glink_eh_frame->size = size + pad;
12489 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12490 }
12491
d969d15f
AM		 12492 maybe_strip_output (info, htab->brlt);
12493 if (htab->glink_eh_frame != NULL)
12494 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12495
b34976b6 12496 return TRUE;
721956f4
AM		 12497}
12498
12499/* Called after we have determined section placement. If sections
805fc799 12500 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12501
805fc799 12502bfd_vma
1c865ab2 12503ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12504{
805fc799
AM		 12505 asection *s;
12506 bfd_vma TOCstart;
721956f4 12507
805fc799
AM		 12508 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12509 order. The TOC starts where the first of these sections starts. */
12510 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12511 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12512 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12513 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12514 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12515 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12516 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12517 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12518 {
12519 /* This may happen for
12520 o references to TOC base (SYM@toc / TOC[tc0]) without a
12521 .toc directive
12522 o bad linker script
12523 o --gc-sections and empty TOC sections
12524
12525 FIXME: Warn user? */
12526
12527 /* Look for a likely section. We probably won't even be
12528 using TOCstart. */
12529 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12530 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12531 | SEC_EXCLUDE))
805fc799
AM		 12532 == (SEC_ALLOC | SEC_SMALL_DATA))
12533 break;
721956f4 12534 if (s == NULL)
805fc799 12535 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12536 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12537 == (SEC_ALLOC | SEC_SMALL_DATA))
12538 break;
721956f4 12539 if (s == NULL)
805fc799 12540 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12541 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12542 == SEC_ALLOC)
805fc799 12543 break;
721956f4 12544 if (s == NULL)
805fc799 12545 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12546 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12547 break;
12548 }
721956f4 12549
805fc799
AM		 12550 TOCstart = 0;
12551 if (s != NULL)
12552 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12553
1c865ab2
AM		 12554 _bfd_set_gp_value (obfd, TOCstart);
12555
810d4e75 12556 if (info != NULL && s != NULL)
1c865ab2
AM		 12557 {
12558 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12559
810d4e75
AM		 12560 if (htab != NULL)
12561 {
12562 if (htab->elf.hgot != NULL)
12563 {
12564 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12565 htab->elf.hgot->root.u.def.section = s;
12566 }
12567 }
12568 else
1c865ab2 12569 {
810d4e75
AM		 12570 struct bfd_link_hash_entry *bh = NULL;
12571 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12572 s, TOC_BASE_OFF, NULL, FALSE,
12573 FALSE, &bh);
1c865ab2
AM		 12574 }
12575 }
805fc799 12576 return TOCstart;
721956f4
AM		 12577}
12578
a345bc8d
AM		 12579/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12580 write out any global entry stubs. */
12581
12582static bfd_boolean
12583build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12584{
12585 struct bfd_link_info *info;
12586 struct ppc_link_hash_table *htab;
12587 struct plt_entry *pent;
12588 asection *s;
12589
12590 if (h->root.type == bfd_link_hash_indirect)
12591 return TRUE;
12592
12593 if (!h->pointer_equality_needed)
12594 return TRUE;
12595
12596 if (h->def_regular)
12597 return TRUE;
12598
12599 info = inf;
12600 htab = ppc_hash_table (info);
12601 if (htab == NULL)
12602 return FALSE;
12603
12604 s = htab->glink;
12605 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12606 if (pent->plt.offset != (bfd_vma) -1
12607 && pent->addend == 0)
12608 {
12609 bfd_byte *p;
12610 asection *plt;
12611 bfd_vma off;
12612
a345bc8d 12613 p = s->contents + h->root.u.def.value;
33e44f2e 12614 plt = htab->elf.splt;
a345bc8d
AM		 12615 if (!htab->elf.dynamic_sections_created
12616 || h->dynindx == -1)
33e44f2e 12617 plt = htab->elf.iplt;
a345bc8d
AM		 12618 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12619 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12620
12621 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12622 {
12623 info->callbacks->einfo
12624 (_("%P: linkage table error against `%T'\n"),
12625 h->root.root.string);
12626 bfd_set_error (bfd_error_bad_value);
12627 htab->stub_error = TRUE;
12628 }
12629
7341d5e2
AM		 12630 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12631 if (htab->params->emit_stub_syms)
12632 {
12633 size_t len = strlen (h->root.root.string);
12634 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12635
12636 if (name == NULL)
12637 return FALSE;
12638
12639 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12640 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12641 if (h == NULL)
12642 return FALSE;
12643 if (h->root.type == bfd_link_hash_new)
12644 {
12645 h->root.type = bfd_link_hash_defined;
12646 h->root.u.def.section = s;
12647 h->root.u.def.value = p - s->contents;
12648 h->ref_regular = 1;
12649 h->def_regular = 1;
12650 h->ref_regular_nonweak = 1;
12651 h->forced_local = 1;
12652 h->non_elf = 0;
12653 }
12654 }
12655
a345bc8d
AM		 12656 if (PPC_HA (off) != 0)
12657 {
12658 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12659 p += 4;
12660 }
12661 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12662 p += 4;
12663 bfd_put_32 (s->owner, MTCTR_R12, p);
12664 p += 4;
12665 bfd_put_32 (s->owner, BCTR, p);
12666 break;
12667 }
12668 return TRUE;
12669}
12670
721956f4
AM		 12671/* Build all the stubs associated with the current output file.
12672 The stubs are kept in a hash table attached to the main linker
12673 hash table. This function is called via gldelf64ppc_finish. */
12674
b34976b6 12675bfd_boolean
e7d1c40c 12676ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12677 char **stats)
5d1634d7
AM		 12678{
12679 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12680 asection *stub_sec;
5d1634d7 12681 bfd_byte *p;
e717da7e 12682 int stub_sec_count = 0;
5d1634d7 12683
4dfe6ac6
NC		 12684 if (htab == NULL)
12685 return FALSE;
12686
eea6121a 12687 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12688 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12689 stub_sec != NULL;
12690 stub_sec = stub_sec->next)
eea6121a
AM		 12691 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12692 && stub_sec->size != 0)
e717da7e 12693 {
e7d1c40c 12694 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12695 if (stub_sec->contents == NULL)
12696 return FALSE;
12697 /* We want to check that built size is the same as calculated
12698 size. rawsize is a convenient location to use. */
12699 stub_sec->rawsize = stub_sec->size;
12700 stub_sec->size = 0;
e717da7e 12701 }
5d1634d7 12702
23eb7e01 12703 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12704 {
9f951329 12705 unsigned int indx;
ad8e1ba5 12706 bfd_vma plt0;
9f951329 12707
721956f4 12708 /* Build the .glink plt call stub. */
e7d1c40c 12709 if (htab->params->emit_stub_syms)
97b639ba
AM		 12710 {
12711 struct elf_link_hash_entry *h;
468392fb
AM		 12712 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12713 TRUE, FALSE, FALSE);
97b639ba
AM		 12714 if (h == NULL)
12715 return FALSE;
12716 if (h->root.type == bfd_link_hash_new)
12717 {
12718 h->root.type = bfd_link_hash_defined;
12719 h->root.u.def.section = htab->glink;
ee4bf8d2 12720 h->root.u.def.value = 8;
f5385ebf
AM		 12721 h->ref_regular = 1;
12722 h->def_regular = 1;
12723 h->ref_regular_nonweak = 1;
12724 h->forced_local = 1;
12725 h->non_elf = 0;
97b639ba
AM		 12726 }
12727 }
33e44f2e
AM		 12728 plt0 = (htab->elf.splt->output_section->vma
12729 + htab->elf.splt->output_offset
12730 - 16);
176a0d42
AM		 12731 if (info->emitrelocations)
12732 {
12733 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12734 if (r == NULL)
12735 return FALSE;
12736 r->r_offset = (htab->glink->output_offset
12737 + htab->glink->output_section->vma);
12738 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12739 r->r_addend = plt0;
12740 }
4ce794b7 12741 p = htab->glink->contents;
176a0d42 12742 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12743 bfd_put_64 (htab->glink->owner, plt0, p);
12744 p += 8;
b9e5796b
AM		 12745 if (htab->opd_abi)
12746 {
12747 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12748 p += 4;
12749 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12750 p += 4;
12751 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12752 p += 4;
12753 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12754 p += 4;
12755 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12756 p += 4;
12757 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12758 p += 4;
12759 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12760 p += 4;
12761 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12762 p += 4;
12763 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12764 p += 4;
12765 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12766 p += 4;
12767 }
12768 else
12769 {
12770 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12771 p += 4;
12772 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12773 p += 4;
12774 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12775 p += 4;
12776 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12777 p += 4;
12778 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12779 p += 4;
12780 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12781 p += 4;
12782 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12783 p += 4;
12784 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12785 p += 4;
12786 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12787 p += 4;
12788 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12789 p += 4;
12790 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12791 p += 4;
12792 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12793 p += 4;
12794 }
4ce794b7 12795 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12796 p += 4;
ee4bf8d2
AM		 12797 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12798 {
12799 bfd_put_32 (htab->glink->owner, NOP, p);
12800 p += 4;
12801 }
ad8e1ba5 12802
9f951329
AM		 12803 /* Build the .glink lazy link call stubs. */
12804 indx = 0;
a345bc8d 12805 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12806 {
b9e5796b 12807 if (htab->opd_abi)
9f951329 12808 {
b9e5796b
AM		 12809 if (indx < 0x8000)
12810 {
12811 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12812 p += 4;
12813 }
12814 else
12815 {
12816 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12817 p += 4;
12818 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12819 p);
12820 p += 4;
12821 }
9f951329 12822 }
4ce794b7 12823 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12824 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12825 indx++;
9f951329
AM		 12826 p += 4;
12827 }
a345bc8d
AM		 12828
12829 /* Build .glink global entry stubs. */
12830 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12831 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12832 }
5d1634d7 12833
7341d5e2 12834 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12835 {
4ce794b7 12836 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12837 htab->brlt->size);
4ce794b7 12838 if (htab->brlt->contents == NULL)
b34976b6 12839 return FALSE;
721956f4 12840 }
ee75fd95 12841 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12842 {
12843 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12844 htab->relbrlt->size);
63bc6f6c
AM		 12845 if (htab->relbrlt->contents == NULL)
12846 return FALSE;
12847 }
5d1634d7 12848
721956f4
AM		 12849 /* Build the stubs as directed by the stub hash table. */
12850 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12851
aa8a7074
AM		 12852 if (htab->relbrlt != NULL)
12853 htab->relbrlt->reloc_count = 0;
12854
e7d1c40c
AM		 12855 if (htab->params->plt_stub_align != 0)
12856 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12857 stub_sec != NULL;
12858 stub_sec = stub_sec->next)
12859 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12860 stub_sec->size = ((stub_sec->size
12861 + (1 << htab->params->plt_stub_align) - 1)
12862 & (-1 << htab->params->plt_stub_align));
794e51c0 12863
e7d1c40c 12864 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12865 stub_sec != NULL;
12866 stub_sec = stub_sec->next)
e717da7e
AM		 12867 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12868 {
12869 stub_sec_count += 1;
eea6121a 12870 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12871 break;
12872 }
5d1634d7 12873
da44f4e5
AM		 12874 /* Note that the glink_eh_frame check here is not only testing that
12875 the generated size matched the calculated size but also that
12876 bfd_elf_discard_info didn't make any changes to the section. */
721956f4 12877 if (stub_sec != NULL
58d180e8
AM		 12878 || (htab->glink_eh_frame != NULL
12879 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12880 {
b34976b6 12881 htab->stub_error = TRUE;
8de848d8 12882 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12883 }
721956f4 12884
d2a300cf
AM		 12885 if (htab->stub_error)
12886 return FALSE;
12887
12888 if (stats != NULL)
12889 {
12890 *stats = bfd_malloc (500);
12891 if (*stats == NULL)
12892 return FALSE;
12893
ee75fd95 12894 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 12895 " branch %lu\n"
12896 " toc adjust %lu\n"
12897 " long branch %lu\n"
12898 " long toc adj %lu\n"
794e51c0 12899 " plt call %lu\n"
7341d5e2
AM		 12900 " plt call toc %lu\n"
12901 " global entry %lu"),
e717da7e 12902 stub_sec_count,
ee75fd95 12903 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 12904 htab->stub_count[ppc_stub_long_branch - 1],
12905 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12906 htab->stub_count[ppc_stub_plt_branch - 1],
12907 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 12908 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 12909 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12910 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 12911 }
12912 return TRUE;
5bd4f169
AM		 12913}
12914
99877b66
AM		 12915/* This function undoes the changes made by add_symbol_adjust. */
12916
12917static bfd_boolean
12918undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12919{
12920 struct ppc_link_hash_entry *eh;
12921
12922 if (h->root.type == bfd_link_hash_indirect)
12923 return TRUE;
12924
99877b66
AM		 12925 eh = (struct ppc_link_hash_entry *) h;
12926 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12927 return TRUE;
12928
12929 eh->elf.root.type = bfd_link_hash_undefined;
12930 return TRUE;
12931}
12932
12933void
12934ppc64_elf_restore_symbols (struct bfd_link_info *info)
12935{
12936 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 12937
12938 if (htab != NULL)
12939 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 12940}
12941
60124e18
AM		 12942/* What to do when ld finds relocations against symbols defined in
12943 discarded sections. */
12944
12945static unsigned int
12946ppc64_elf_action_discarded (asection *sec)
12947{
12948 if (strcmp (".opd", sec->name) == 0)
12949 return 0;
12950
12951 if (strcmp (".toc", sec->name) == 0)
12952 return 0;
12953
bce50a28
JJ		 12954 if (strcmp (".toc1", sec->name) == 0)
12955 return 0;
12956
60124e18
AM		 12957 return _bfd_elf_default_action_discarded (sec);
12958}
12959
5bd4f169
AM		 12960/* The RELOCATE_SECTION function is called by the ELF backend linker
12961 to handle the relocations for a section.
12962
12963 The relocs are always passed as Rela structures; if the section
12964 actually uses Rel structures, the r_addend field will always be
12965 zero.
12966
12967 This function is responsible for adjust the section contents as
12968 necessary, and (if using Rela relocs and generating a
1049f94e 12969 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 12970 necessary.
12971
12972 This function does not have to worry about setting the reloc
12973 address or the reloc symbol index.
12974
12975 LOCAL_SYMS is a pointer to the swapped in local symbols.
12976
12977 LOCAL_SECTIONS is an array giving the section in the input file
12978 corresponding to the st_shndx field of each local symbol.
12979
12980 The global hash table entry for the global symbols can be found
12981 via elf_sym_hashes (input_bfd).
12982
1049f94e 12983 When generating relocatable output, this function must handle
5bd4f169
AM		 12984 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12985 going to be the section symbol corresponding to the output
12986 section, which means that the addend must be adjusted
12987 accordingly. */
12988
b34976b6 12989static bfd_boolean
4ce794b7
AM		 12990ppc64_elf_relocate_section (bfd *output_bfd,
12991 struct bfd_link_info *info,
12992 bfd *input_bfd,
12993 asection *input_section,
12994 bfd_byte *contents,
12995 Elf_Internal_Rela *relocs,
12996 Elf_Internal_Sym *local_syms,
12997 asection **local_sections)
5bd4f169 12998{
65f38f15 12999 struct ppc_link_hash_table *htab;
5bd4f169
AM		 13000 Elf_Internal_Shdr *symtab_hdr;
13001 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 13002 Elf_Internal_Rela *rel;
13003 Elf_Internal_Rela *relend;
411e1bfb
AM		 13004 Elf_Internal_Rela outrel;
13005 bfd_byte *loc;
411e1bfb 13006 struct got_entry **local_got_ents;
5bd4f169 13007 bfd_vma TOCstart;
b34976b6
AM		 13008 bfd_boolean ret = TRUE;
13009 bfd_boolean is_opd;
794e51c0
AM		 13010 /* Assume 'at' branch hints. */
13011 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 13012 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 13013
65f38f15 13014 /* Initialize howto table if needed. */
5bd4f169 13015 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 13016 ppc_howto_init ();
13017
65f38f15 13018 htab = ppc_hash_table (info);
4dfe6ac6
NC		 13019 if (htab == NULL)
13020 return FALSE;
ee75fd95
AM		 13021
13022 /* Don't relocate stub sections. */
e7d1c40c 13023 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 13024 return TRUE;
13025
0c8d6e5c 13026 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 13027
411e1bfb 13028 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 13029 TOCstart = elf_gp (output_bfd);
0ffa91dd 13030 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 13031 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 13032 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 13033
5bd4f169
AM		 13034 rel = relocs;
13035 relend = relocs + input_section->reloc_count;
13036 for (; rel < relend; rel++)
13037 {
04c9666a 13038 enum elf_ppc64_reloc_type r_type;
31c76678 13039 bfd_vma addend;
5bd4f169
AM		 13040 bfd_reloc_status_type r;
13041 Elf_Internal_Sym *sym;
13042 asection *sec;
039b3fef
AM		 13043 struct elf_link_hash_entry *h_elf;
13044 struct ppc_link_hash_entry *h;
13045 struct ppc_link_hash_entry *fdh;
5bd4f169 13046 const char *sym_name;
0d4792f7 13047 unsigned long r_symndx, toc_symndx;
3a71aa26 13048 bfd_vma toc_addend;
f961d9dd
AM		 13049 unsigned char tls_mask, tls_gd, tls_type;
13050 unsigned char sym_type;
5bd4f169 13051 bfd_vma relocation;
b34976b6
AM		 13052 bfd_boolean unresolved_reloc;
13053 bfd_boolean warned;
bc30df16 13054 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13055 unsigned int insn;
e11840f9 13056 unsigned int mask;
721956f4
AM		 13057 struct ppc_stub_hash_entry *stub_entry;
13058 bfd_vma max_br_offset;
13059 bfd_vma from;
31c76678 13060 const Elf_Internal_Rela orig_rel = *rel;
b80eed39
AM		 13061 reloc_howto_type *howto;
13062 struct reloc_howto_struct alt_howto;
5bd4f169 13063
4ce794b7 13064 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13065 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13066
13067 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13068 symbol of the previous ADDR64 reloc. The symbol gives us the
13069 proper TOC base to use. */
13070 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13071 && rel != relocs
13072 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13073 && is_opd)
13074 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13075
4ce794b7
AM		 13076 sym = NULL;
13077 sec = NULL;
039b3fef 13078 h_elf = NULL;
4ce794b7 13079 sym_name = NULL;
b34976b6
AM		 13080 unresolved_reloc = FALSE;
13081 warned = FALSE;
65f38f15 13082
0b13192e 13083 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13084 {
13085 /* It's a local symbol. */
74f0fb50 13086 struct _opd_sec_data *opd;
4025353c 13087
5bd4f169
AM		 13088 sym = local_syms + r_symndx;
13089 sec = local_sections[r_symndx];
26c61ae5 13090 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13091 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13092 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13093 opd = get_opd_info (sec);
13094 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13095 {
51aecdc5
AM		 13096 long adjust = opd->adjust[OPD_NDX (sym->st_value
13097 + rel->r_addend)];
4025353c
AM		 13098 if (adjust == -1)
13099 relocation = 0;
13100 else
4cc603a5
AM		 13101 {
13102 /* If this is a relocation against the opd section sym
13103 and we have edited .opd, adjust the reloc addend so
13104 that ld -r and ld --emit-relocs output is correct.
13105 If it is a reloc against some other .opd symbol,
13106 then the symbol value will be adjusted later. */
13107 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13108 rel->r_addend += adjust;
13109 else
13110 relocation += adjust;
13111 }
1e2f5b6e 13112 }
5bd4f169
AM		 13113 }
13114 else
13115 {
62d887d4
L		 13116 bfd_boolean ignored;
13117
b2a8e766
AM		 13118 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13119 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13120 h_elf, sec, relocation,
62d887d4 13121 unresolved_reloc, warned, ignored);
039b3fef
AM		 13122 sym_name = h_elf->root.root.string;
13123 sym_type = h_elf->type;
b69fdb4e
AM		 13124 if (sec != NULL
13125 && sec->owner == output_bfd
13126 && strcmp (sec->name, ".opd") == 0)
13127 {
13128 /* This is a symbol defined in a linker script. All
13129 such are defined in output sections, even those
13130 defined by simple assignment from a symbol defined in
13131 an input section. Transfer the symbol to an
13132 appropriate input .opd section, so that a branch to
13133 this symbol will be mapped to the location specified
13134 by the opd entry. */
13135 struct bfd_link_order *lo;
13136 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13137 if (lo->type == bfd_indirect_link_order)
13138 {
13139 asection *isec = lo->u.indirect.section;
13140 if (h_elf->root.u.def.value >= isec->output_offset
13141 && h_elf->root.u.def.value < (isec->output_offset
13142 + isec->size))
13143 {
13144 h_elf->root.u.def.value -= isec->output_offset;
13145 h_elf->root.u.def.section = isec;
13146 sec = isec;
13147 break;
13148 }
13149 }
13150 }
5bd4f169 13151 }
039b3fef 13152 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13153
dbaa2011 13154 if (sec != NULL && discarded_section (sec))
e4067dbb 13155 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR		 13156 rel, 1, relend,
13157 ppc64_elf_howto_table[r_type], 0,
e4067dbb 13158 contents);
ab96bf03
AM		 13159
13160 if (info->relocatable)
13161 continue;
13162
f40da81b
AM		 13163 if (h != NULL && &h->elf == htab->elf.hgot)
13164 {
13165 relocation = (TOCstart
13166 + htab->stub_group[input_section->id].toc_off);
13167 sec = bfd_abs_section_ptr;
13168 unresolved_reloc = FALSE;
13169 }
13170
951fd09b
AM		 13171 /* TLS optimizations. Replace instruction sequences and relocs
13172 based on information we collected in tls_optimize. We edit
13173 RELOCS so that --emit-relocs will output something sensible
13174 for the final instruction stream. */
13175 tls_mask = 0;
13176 tls_gd = 0;
0d4792f7 13177 toc_symndx = 0;
727fc41e
AM		 13178 if (h != NULL)
13179 tls_mask = h->tls_mask;
13180 else if (local_got_ents != NULL)
411e1bfb 13181 {
e054468f
AM		 13182 struct plt_entry **local_plt = (struct plt_entry **)
13183 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13184 unsigned char *lgot_masks = (unsigned char *)
e054468f 13185 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13186 tls_mask = lgot_masks[r_symndx];
13187 }
13188 if (tls_mask == 0
13189 && (r_type == R_PPC64_TLS
13190 || r_type == R_PPC64_TLSGD
13191 || r_type == R_PPC64_TLSLD))
13192 {
13193 /* Check for toc tls entries. */
f961d9dd 13194 unsigned char *toc_tls;
0d4792f7 13195
727fc41e
AM		 13196 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13197 &local_syms, rel, input_bfd))
13198 return FALSE;
0d4792f7 13199
727fc41e
AM		 13200 if (toc_tls)
13201 tls_mask = *toc_tls;
0d4792f7
AM		 13202 }
13203
13204 /* Check that tls relocs are used with tls syms, and non-tls
13205 relocs are used with non-tls syms. */
cf35638d 13206 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13207 && r_type != R_PPC64_NONE
13208 && (h == NULL
039b3fef
AM		 13209 || h->elf.root.type == bfd_link_hash_defined
13210 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13211 && (IS_PPC64_TLS_RELOC (r_type)
13212 != (sym_type == STT_TLS
13213 || (sym_type == STT_SECTION
13214 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13215 {
727fc41e
AM		 13216 if (tls_mask != 0
13217 && (r_type == R_PPC64_TLS
13218 || r_type == R_PPC64_TLSGD
13219 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13220 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13221 ;
13222 else
25f53a85 13223 info->callbacks->einfo
1d483afe 13224 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13225 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13226 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13227 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13228 ppc64_elf_howto_table[r_type]->name,
13229 sym_name);
411e1bfb
AM		 13230 }
13231
13232 /* Ensure reloc mapping code below stays sane. */
13233 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13234 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13235 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13236 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13237 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13238 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13239 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13240 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13241 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13242 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13243 abort ();
0d4792f7 13244
411e1bfb
AM		 13245 switch (r_type)
13246 {
13247 default:
411e1bfb
AM		 13248 break;
13249
ba761f19
AM		 13250 case R_PPC64_LO_DS_OPT:
13251 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13252 if ((insn & (0x3f << 26)) != 58u << 26)
13253 abort ();
13254 insn += (14u << 26) - (58u << 26);
13255 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13256 r_type = R_PPC64_TOC16_LO;
13257 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13258 break;
13259
411e1bfb
AM		 13260 case R_PPC64_TOC16:
13261 case R_PPC64_TOC16_LO:
13262 case R_PPC64_TOC16_DS:
13263 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13264 {
13265 /* Check for toc tls entries. */
f961d9dd 13266 unsigned char *toc_tls;
951fd09b 13267 int retval;
411e1bfb 13268
3a71aa26
AM		 13269 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13270 &local_syms, rel, input_bfd);
951fd09b 13271 if (retval == 0)
411e1bfb
AM		 13272 return FALSE;
13273
13274 if (toc_tls)
13275 {
951fd09b 13276 tls_mask = *toc_tls;
411e1bfb
AM		 13277 if (r_type == R_PPC64_TOC16_DS
13278 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13279 {
13280 if (tls_mask != 0
13281 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13282 goto toctprel;
13283 }
411e1bfb 13284 else
951fd09b
AM		 13285 {
13286 /* If we found a GD reloc pair, then we might be
13287 doing a GD->IE transition. */
13288 if (retval == 2)
13289 {
13290 tls_gd = TLS_TPRELGD;
13291 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13292 goto tls_ldgd_opt;
951fd09b
AM		 13293 }
13294 else if (retval == 3)
13295 {
13296 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13297 goto tls_ldgd_opt;
951fd09b
AM		 13298 }
13299 }
411e1bfb
AM		 13300 }
13301 }
13302 break;
13303
9d6ded02
AM		 13304 case R_PPC64_GOT_TPREL16_HI:
13305 case R_PPC64_GOT_TPREL16_HA:
13306 if (tls_mask != 0
13307 && (tls_mask & TLS_TPREL) == 0)
13308 {
13309 rel->r_offset -= d_offset;
13310 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13311 r_type = R_PPC64_NONE;
13312 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13313 }
13314 break;
13315
411e1bfb
AM		 13316 case R_PPC64_GOT_TPREL16_DS:
13317 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13318 if (tls_mask != 0
13319 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13320 {
81407a69 13321 toctprel:
4fe5ca5b 13322 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 13323 insn &= 31 << 21;
13324 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 13325 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 13326 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13327 if (toc_symndx != 0)
13328 {
13329 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13330 rel->r_addend = toc_addend;
0d4792f7
AM		 13331 /* We changed the symbol. Start over in order to
13332 get h, sym, sec etc. right. */
13333 rel--;
13334 continue;
13335 }
13336 else
13337 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13338 }
13339 break;
13340
13341 case R_PPC64_TLS:
951fd09b
AM		 13342 if (tls_mask != 0
13343 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13344 {
411e1bfb 13345 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13346 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13347 if (insn == 0)
411e1bfb 13348 abort ();
411e1bfb 13349 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13350 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13351 PPC64_TPREL16_LO which is at low-order half-word. */
13352 rel->r_offset += d_offset;
0d4792f7
AM		 13353 r_type = R_PPC64_TPREL16_LO;
13354 if (toc_symndx != 0)
13355 {
13356 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13357 rel->r_addend = toc_addend;
0d4792f7
AM		 13358 /* We changed the symbol. Start over in order to
13359 get h, sym, sec etc. right. */
13360 rel--;
13361 continue;
13362 }
13363 else
13364 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13365 }
13366 break;
13367
411e1bfb
AM		 13368 case R_PPC64_GOT_TLSGD16_HI:
13369 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13370 tls_gd = TLS_TPRELGD;
13371 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13372 goto tls_gdld_hi;
13373 break;
13374
411e1bfb
AM		 13375 case R_PPC64_GOT_TLSLD16_HI:
13376 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13377 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13378 {
951fd09b
AM		 13379 tls_gdld_hi:
13380 if ((tls_mask & tls_gd) != 0)
13381 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13382 + R_PPC64_GOT_TPREL16_DS);
13383 else
411e1bfb 13384 {
4fe5ca5b 13385 rel->r_offset -= d_offset;
727ac201 13386 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13387 r_type = R_PPC64_NONE;
411e1bfb 13388 }
951fd09b 13389 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13390 }
13391 break;
13392
951fd09b
AM		 13393 case R_PPC64_GOT_TLSGD16:
13394 case R_PPC64_GOT_TLSGD16_LO:
13395 tls_gd = TLS_TPRELGD;
13396 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13397 goto tls_ldgd_opt;
951fd09b 13398 break;
411e1bfb 13399
951fd09b
AM		 13400 case R_PPC64_GOT_TLSLD16:
13401 case R_PPC64_GOT_TLSLD16_LO:
13402 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13403 {
3a71aa26 13404 unsigned int insn1, insn2, insn3;
102890f0
AM		 13405 bfd_vma offset;
13406
13407 tls_ldgd_opt:
727fc41e
AM		 13408 offset = (bfd_vma) -1;
13409 /* If not using the newer R_PPC64_TLSGD/LD to mark
13410 __tls_get_addr calls, we must trust that the call
13411 stays with its arg setup insns, ie. that the next
13412 reloc is the __tls_get_addr call associated with
13413 the current reloc. Edit both insns. */
13414 if (input_section->has_tls_get_addr_call
13415 && rel + 1 < relend
13416 && branch_reloc_hash_match (input_bfd, rel + 1,
13417 htab->tls_get_addr,
13418 htab->tls_get_addr_fd))
13419 offset = rel[1].r_offset;
102890f0 13420 if ((tls_mask & tls_gd) != 0)
411e1bfb 13421 {
102890f0 13422 /* IE */
3a71aa26
AM		 13423 insn1 = bfd_get_32 (output_bfd,
13424 contents + rel->r_offset - d_offset);
102890f0
AM		 13425 insn1 &= (1 << 26) - (1 << 2);
13426 insn1 |= 58 << 26; /* ld */
13427 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13428 if (offset != (bfd_vma) -1)
f58d5a2d 13429 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13430 if ((tls_mask & TLS_EXPLICIT) == 0)
13431 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13432 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13433 else
102890f0
AM		 13434 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13435 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13436 }
13437 else
13438 {
13439 /* LE */
13440 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13441 insn2 = 0x38630000; /* addi 3,3,0 */
13442 if (tls_gd == 0)
951fd09b 13443 {
102890f0 13444 /* Was an LD reloc. */
1d483afe
AM		 13445 if (toc_symndx)
13446 sec = local_sections[toc_symndx];
13447 for (r_symndx = 0;
13448 r_symndx < symtab_hdr->sh_info;
13449 r_symndx++)
13450 if (local_sections[r_symndx] == sec)
13451 break;
13452 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13453 r_symndx = STN_UNDEF;
102890f0 13454 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13455 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13456 rel->r_addend -= (local_syms[r_symndx].st_value
13457 + sec->output_offset
13458 + sec->output_section->vma);
951fd09b 13459 }
102890f0 13460 else if (toc_symndx != 0)
3a71aa26
AM		 13461 {
13462 r_symndx = toc_symndx;
13463 rel->r_addend = toc_addend;
13464 }
102890f0
AM		 13465 r_type = R_PPC64_TPREL16_HA;
13466 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13467 if (offset != (bfd_vma) -1)
13468 {
13469 rel[1].r_info = ELF64_R_INFO (r_symndx,
13470 R_PPC64_TPREL16_LO);
13471 rel[1].r_offset = offset + d_offset;
13472 rel[1].r_addend = rel->r_addend;
13473 }
102890f0 13474 }
3a71aa26
AM		 13475 bfd_put_32 (output_bfd, insn1,
13476 contents + rel->r_offset - d_offset);
727fc41e
AM		 13477 if (offset != (bfd_vma) -1)
13478 {
13479 insn3 = bfd_get_32 (output_bfd,
13480 contents + offset + 4);
13481 if (insn3 == NOP
13482 || insn3 == CROR_151515 || insn3 == CROR_313131)
13483 {
13484 rel[1].r_offset += 4;
13485 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13486 insn2 = NOP;
13487 }
13488 bfd_put_32 (output_bfd, insn2, contents + offset);
13489 }
13490 if ((tls_mask & tls_gd) == 0
13491 && (tls_gd == 0 || toc_symndx != 0))
13492 {
13493 /* We changed the symbol. Start over in order
13494 to get h, sym, sec etc. right. */
13495 rel--;
13496 continue;
13497 }
13498 }
13499 break;
13500
13501 case R_PPC64_TLSGD:
13502 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13503 {
13504 unsigned int insn2, insn3;
13505 bfd_vma offset = rel->r_offset;
13506
13507 if ((tls_mask & TLS_TPRELGD) != 0)
13508 {
13509 /* IE */
13510 r_type = R_PPC64_NONE;
13511 insn2 = 0x7c636a14; /* add 3,3,13 */
13512 }
13513 else
13514 {
13515 /* LE */
13516 if (toc_symndx != 0)
13517 {
13518 r_symndx = toc_symndx;
13519 rel->r_addend = toc_addend;
13520 }
13521 r_type = R_PPC64_TPREL16_LO;
13522 rel->r_offset = offset + d_offset;
13523 insn2 = 0x38630000; /* addi 3,3,0 */
13524 }
13525 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13526 /* Zap the reloc on the _tls_get_addr call too. */
13527 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13528 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13529 insn3 = bfd_get_32 (output_bfd,
13530 contents + offset + 4);
102890f0
AM		 13531 if (insn3 == NOP
13532 || insn3 == CROR_151515 || insn3 == CROR_313131)
13533 {
727fc41e 13534 rel->r_offset += 4;
3a71aa26
AM		 13535 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13536 insn2 = NOP;
102890f0 13537 }
102890f0 13538 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13539 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 13540 {
102890f0
AM		 13541 rel--;
13542 continue;
411e1bfb 13543 }
411e1bfb 13544 }
411e1bfb
AM		 13545 break;
13546
727fc41e
AM		 13547 case R_PPC64_TLSLD:
13548 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13549 {
13550 unsigned int insn2, insn3;
13551 bfd_vma offset = rel->r_offset;
13552
13553 if (toc_symndx)
13554 sec = local_sections[toc_symndx];
13555 for (r_symndx = 0;
13556 r_symndx < symtab_hdr->sh_info;
13557 r_symndx++)
13558 if (local_sections[r_symndx] == sec)
13559 break;
13560 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13561 r_symndx = STN_UNDEF;
727fc41e 13562 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13563 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13564 rel->r_addend -= (local_syms[r_symndx].st_value
13565 + sec->output_offset
13566 + sec->output_section->vma);
13567
13568 r_type = R_PPC64_TPREL16_LO;
13569 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13570 rel->r_offset = offset + d_offset;
13571 /* Zap the reloc on the _tls_get_addr call too. */
13572 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13573 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13574 insn2 = 0x38630000; /* addi 3,3,0 */
13575 insn3 = bfd_get_32 (output_bfd,
13576 contents + offset + 4);
13577 if (insn3 == NOP
13578 || insn3 == CROR_151515 || insn3 == CROR_313131)
13579 {
13580 rel->r_offset += 4;
13581 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13582 insn2 = NOP;
13583 }
13584 bfd_put_32 (output_bfd, insn2, contents + offset);
13585 rel--;
13586 continue;
13587 }
13588 break;
13589
411e1bfb 13590 case R_PPC64_DTPMOD64:
951fd09b
AM		 13591 if (rel + 1 < relend
13592 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13593 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13594 {
951fd09b
AM		 13595 if ((tls_mask & TLS_GD) == 0)
13596 {
13597 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13598 if ((tls_mask & TLS_TPRELGD) != 0)
13599 r_type = R_PPC64_TPREL64;
13600 else
13601 {
4ce794b7 13602 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13603 r_type = R_PPC64_NONE;
13604 }
13605 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13606 }
13607 }
13608 else
13609 {
13610 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13611 {
4ce794b7 13612 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13613 r_type = R_PPC64_NONE;
951fd09b 13614 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13615 }
411e1bfb
AM		 13616 }
13617 break;
13618
13619 case R_PPC64_TPREL64:
951fd09b 13620 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13621 {
13622 r_type = R_PPC64_NONE;
13623 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13624 }
13625 break;
52a82034
AM		 13626
13627 case R_PPC64_REL16_HA:
13628 /* If we are generating a non-PIC executable, edit
13629 . 0: addis 2,12,.TOC.-0b@ha
13630 . addi 2,2,.TOC.-0b@l
13631 used by ELFv2 global entry points to set up r2, to
13632 . lis 2,.TOC.@ha
13633 . addi 2,2,.TOC.@l
13634 if .TOC. is in range. */
13635 if (!info->shared
810d4e75 13636 && !info->traditional_format
52a82034
AM		 13637 && h != NULL && &h->elf == htab->elf.hgot
13638 && rel + 1 < relend
13639 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13640 && rel[1].r_offset == rel->r_offset + 4
13641 && rel[1].r_addend == rel->r_addend + 4
13642 && relocation + 0x80008000 <= 0xffffffff)
13643 {
13644 unsigned int insn1, insn2;
13645 bfd_vma offset = rel->r_offset - d_offset;
13646 insn1 = bfd_get_32 (output_bfd, contents + offset);
13647 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13648 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13649 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13650 {
13651 r_type = R_PPC64_ADDR16_HA;
13652 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13653 rel->r_addend -= d_offset;
13654 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13655 rel[1].r_addend -= d_offset + 4;
13656 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13657 }
13658 }
13659 break;
411e1bfb
AM		 13660 }
13661
13662 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 13663 insn = 0;
b25116a9
AM		 13664 max_br_offset = 1 << 25;
13665 addend = rel->r_addend;
bc30df16 13666 reloc_dest = DEST_NORMAL;
65f38f15 13667 switch (r_type)
5bd4f169
AM		 13668 {
13669 default:
65f38f15 13670 break;
5bd4f169 13671
3b421ab3
AM		 13672 case R_PPC64_TOCSAVE:
13673 if (relocation + addend == (rel->r_offset
13674 + input_section->output_offset
13675 + input_section->output_section->vma)
13676 && tocsave_find (htab, NO_INSERT,
13677 &local_syms, rel, input_bfd))
13678 {
13679 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13680 if (insn == NOP
13681 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 13682 bfd_put_32 (input_bfd,
13683 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 13684 contents + rel->r_offset);
13685 }
13686 break;
13687
65f38f15
AM		 13688 /* Branch taken prediction relocations. */
13689 case R_PPC64_ADDR14_BRTAKEN:
13690 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 13691 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13692 /* Fall thru. */
65f38f15 13693
86c76c7b 13694 /* Branch not taken prediction relocations. */
65f38f15
AM		 13695 case R_PPC64_ADDR14_BRNTAKEN:
13696 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 13697 insn |= bfd_get_32 (output_bfd,
13698 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 13699 /* Fall thru. */
86c76c7b 13700
b25116a9
AM		 13701 case R_PPC64_REL14:
13702 max_br_offset = 1 << 15;
13703 /* Fall thru. */
5bd4f169 13704
65f38f15 13705 case R_PPC64_REL24:
ad8e1ba5
AM		 13706 /* Calls to functions with a different TOC, such as calls to
13707 shared objects, need to alter the TOC pointer. This is
13708 done using a linkage stub. A REL24 branching to these
13709 linkage stubs needs to be followed by a nop, as the nop
13710 will be replaced with an instruction to restore the TOC
13711 base pointer. */
8387904d 13712 fdh = h;
b31867b6
AM		 13713 if (h != NULL
13714 && h->oh != NULL
13715 && h->oh->is_func_descriptor)
13716 fdh = ppc_follow_link (h->oh);
31c76678
DK		 13717 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13718 htab);
6abec6bc 13719 if (stub_entry != NULL
ad8e1ba5 13720 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 13721 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 13722 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13723 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 13724 {
b25116a9 13725 bfd_boolean can_plt_call = FALSE;
721956f4 13726
ba8ca3e7
AM		 13727 /* All of these stubs will modify r2, so there must be a
13728 branch and link followed by a nop. The nop is
13729 replaced by an insn to restore r2. */
eea6121a 13730 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 13731 {
ba8ca3e7
AM		 13732 unsigned long br;
13733
13734 br = bfd_get_32 (input_bfd,
13735 contents + rel->r_offset);
13736 if ((br & 1) != 0)
41bd81ab 13737 {
ba8ca3e7
AM		 13738 unsigned long nop;
13739
13740 nop = bfd_get_32 (input_bfd,
13741 contents + rel->r_offset + 4);
13742 if (nop == NOP
13743 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 13744 {
ba8ca3e7
AM		 13745 if (h != NULL
13746 && (h == htab->tls_get_addr_fd
13747 || h == htab->tls_get_addr)
e7d1c40c 13748 && !htab->params->no_tls_get_addr_opt)
ba8ca3e7
AM		 13749 {
13750 /* Special stub used, leave nop alone. */
13751 }
13752 else
a078d95a
AM		 13753 bfd_put_32 (input_bfd,
13754 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 13755 contents + rel->r_offset + 4);
13756 can_plt_call = TRUE;
a7f2871e 13757 }
41bd81ab 13758 }
5bd4f169 13759 }
721956f4 13760
ba8ca3e7 13761 if (!can_plt_call && h != NULL)
721956f4 13762 {
ba8ca3e7
AM		 13763 const char *name = h->elf.root.root.string;
13764
13765 if (*name == '.')
13766 ++name;
13767
13768 if (strncmp (name, "__libc_start_main", 17) == 0
13769 && (name[17] == 0 || name[17] == '@'))
6ab189d5 13770 {
ba8ca3e7
AM		 13771 /* Allow crt1 branch to go via a toc adjusting
13772 stub. Other calls that never return could do
13773 the same, if we could detect such. */
b25116a9 13774 can_plt_call = TRUE;
6ab189d5 13775 }
ba8ca3e7
AM		 13776 }
13777
13778 if (!can_plt_call)
13779 {
13780 /* g++ as of 20130507 emits self-calls without a
13781 following nop. This is arguably wrong since we
13782 have conflicting information. On the one hand a
13783 global symbol and on the other a local call
13784 sequence, but don't error for this special case.
13785 It isn't possible to cheaply verify we have
13786 exactly such a call. Allow all calls to the same
13787 section. */
13788 asection *code_sec = sec;
13789
13790 if (get_opd_info (sec) != NULL)
ad8e1ba5 13791 {
ba8ca3e7
AM		 13792 bfd_vma off = (relocation + addend
13793 - sec->output_section->vma
13794 - sec->output_offset);
bc30df16 13795
ba8ca3e7 13796 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 13797 }
ba8ca3e7
AM		 13798 if (code_sec == input_section)
13799 can_plt_call = TRUE;
13800 }
13801
13802 if (!can_plt_call)
13803 {
4805fc55
AM		 13804 if (stub_entry->stub_type == ppc_stub_plt_call
13805 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13806 info->callbacks->einfo
13807 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13808 "recompile with -fPIC\n"),
13809 input_bfd, input_section, rel->r_offset, sym_name);
13810 else
13811 info->callbacks->einfo
13812 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13813 "(-mcmodel=small toc adjust stub)\n"),
13814 input_bfd, input_section, rel->r_offset, sym_name);
ba8ca3e7
AM		 13815
13816 bfd_set_error (bfd_error_bad_value);
13817 ret = FALSE;
721956f4
AM		 13818 }
13819
b25116a9 13820 if (can_plt_call
794e51c0
AM		 13821 && (stub_entry->stub_type == ppc_stub_plt_call
13822 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13823 unresolved_reloc = FALSE;
13824 }
13825
6abec6bc
AM		 13826 if ((stub_entry == NULL
13827 || stub_entry->stub_type == ppc_stub_long_branch
13828 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13829 && get_opd_info (sec) != NULL)
13830 {
13831 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13832 bfd_vma off = (relocation + addend
13833 - sec->output_section->vma
13834 - sec->output_offset);
aef36ac1 13835 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13836 if (dest != (bfd_vma) -1)
13837 {
13838 relocation = dest;
13839 addend = 0;
bc30df16 13840 reloc_dest = DEST_OPD;
8387904d
AM		 13841 }
13842 }
13843
b25116a9
AM		 13844 /* If the branch is out of reach we ought to have a long
13845 branch stub. */
13846 from = (rel->r_offset
13847 + input_section->output_offset
13848 + input_section->output_section->vma);
13849
6911b7dc
AM		 13850 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13851 ? fdh->elf.other
13852 : sym->st_other);
13853
6abec6bc
AM		 13854 if (stub_entry != NULL
13855 && (stub_entry->stub_type == ppc_stub_long_branch
13856 || stub_entry->stub_type == ppc_stub_plt_branch)
13857 && (r_type == R_PPC64_ADDR14_BRTAKEN
13858 || r_type == R_PPC64_ADDR14_BRNTAKEN
13859 || (relocation + addend - from + max_br_offset
13860 < 2 * max_br_offset)))
13861 /* Don't use the stub if this branch is in range. */
13862 stub_entry = NULL;
b25116a9
AM		 13863
13864 if (stub_entry != NULL)
13865 {
13866 /* Munge up the value and addend so that we call the stub
13867 rather than the procedure directly. */
13868 relocation = (stub_entry->stub_offset
13869 + stub_entry->stub_sec->output_offset
13870 + stub_entry->stub_sec->output_section->vma);
13871 addend = 0;
bc30df16 13872 reloc_dest = DEST_STUB;
3b421ab3 13873
794e51c0
AM		 13874 if ((stub_entry->stub_type == ppc_stub_plt_call
13875 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13876 && (ALWAYS_EMIT_R2SAVE
13877 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13878 && rel + 1 < relend
13879 && rel[1].r_offset == rel->r_offset + 4
13880 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13881 relocation += 4;
b25116a9
AM		 13882 }
13883
13884 if (insn != 0)
13885 {
794e51c0 13886 if (is_isa_v2)
721956f4 13887 {
b25116a9
AM		 13888 /* Set 'a' bit. This is 0b00010 in BO field for branch
13889 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13890 for branch on CTR insns (BO == 1a00t or 1a01t). */
13891 if ((insn & (0x14 << 21)) == (0x04 << 21))
13892 insn |= 0x02 << 21;
13893 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13894 insn |= 0x08 << 21;
13895 else
13896 break;
13897 }
13898 else
13899 {
13900 /* Invert 'y' bit if not the default. */
4cc603a5 13901 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13902 insn ^= 0x01 << 21;
721956f4 13903 }
b25116a9
AM		 13904
13905 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13906 }
e86ce104 13907
06da1e8e
AM		 13908 /* NOP out calls to undefined weak functions.
13909 We can thus call a weak function without first
13910 checking whether the function is defined. */
b25116a9 13911 else if (h != NULL
039b3fef 13912 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13913 && h->elf.dynindx == -1
b25116a9
AM		 13914 && r_type == R_PPC64_REL24
13915 && relocation == 0
4cc603a5 13916 && addend == 0)
e86ce104 13917 {
06da1e8e
AM		 13918 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13919 continue;
e86ce104 13920 }
65f38f15
AM		 13921 break;
13922 }
5bd4f169 13923
65f38f15 13924 /* Set `addend'. */
411e1bfb 13925 tls_type = 0;
65f38f15
AM		 13926 switch (r_type)
13927 {
13928 default:
25f53a85 13929 info->callbacks->einfo
bc30df16 13930 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13931 input_bfd, (int) r_type, sym_name);
5bd4f169 13932
65f38f15 13933 bfd_set_error (bfd_error_bad_value);
b34976b6 13934 ret = FALSE;
65f38f15 13935 continue;
5bd4f169 13936
65f38f15 13937 case R_PPC64_NONE:
411e1bfb 13938 case R_PPC64_TLS:
727fc41e
AM		 13939 case R_PPC64_TLSGD:
13940 case R_PPC64_TLSLD:
3b421ab3 13941 case R_PPC64_TOCSAVE:
04c9666a
AM		 13942 case R_PPC64_GNU_VTINHERIT:
13943 case R_PPC64_GNU_VTENTRY:
65f38f15 13944 continue;
5bd4f169
AM		 13945
13946 /* GOT16 relocations. Like an ADDR16 using the symbol's
13947 address in the GOT as relocation value instead of the
411e1bfb 13948 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13949 symbol and put the symbol value there. */
411e1bfb
AM		 13950 case R_PPC64_GOT_TLSGD16:
13951 case R_PPC64_GOT_TLSGD16_LO:
13952 case R_PPC64_GOT_TLSGD16_HI:
13953 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13954 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 13955 goto dogot;
13956
13957 case R_PPC64_GOT_TLSLD16:
13958 case R_PPC64_GOT_TLSLD16_LO:
13959 case R_PPC64_GOT_TLSLD16_HI:
13960 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13961 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 13962 goto dogot;
13963
13964 case R_PPC64_GOT_TPREL16_DS:
13965 case R_PPC64_GOT_TPREL16_LO_DS:
13966 case R_PPC64_GOT_TPREL16_HI:
13967 case R_PPC64_GOT_TPREL16_HA:
13968 tls_type = TLS_TLS | TLS_TPREL;
13969 goto dogot;
13970
13971 case R_PPC64_GOT_DTPREL16_DS:
13972 case R_PPC64_GOT_DTPREL16_LO_DS:
13973 case R_PPC64_GOT_DTPREL16_HI:
13974 case R_PPC64_GOT_DTPREL16_HA:
13975 tls_type = TLS_TLS | TLS_DTPREL;
13976 goto dogot;
13977
65f38f15
AM		 13978 case R_PPC64_GOT16:
13979 case R_PPC64_GOT16_LO:
13980 case R_PPC64_GOT16_HI:
13981 case R_PPC64_GOT16_HA:
13982 case R_PPC64_GOT16_DS:
13983 case R_PPC64_GOT16_LO_DS:
411e1bfb 13984 dogot:
5bd4f169
AM		 13985 {
13986 /* Relocation is to the entry for this symbol in the global
13987 offset table. */
e717da7e 13988 asection *got;
d881513a 13989 bfd_vma *offp;
5bd4f169 13990 bfd_vma off;
d881513a 13991 unsigned long indx = 0;
927be08e 13992 struct got_entry *ent;
65f38f15 13993
d881513a
AM		 13994 if (tls_type == (TLS_TLS | TLS_LD)
13995 && (h == NULL
f5385ebf 13996 || !h->elf.def_dynamic))
927be08e 13997 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13998 else
5bd4f169 13999 {
5bd4f169 14000
d881513a
AM		 14001 if (h != NULL)
14002 {
14003 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 14004 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
14005 &h->elf)
d881513a 14006 || (info->shared
afe397ea 14007 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 14008 /* This is actually a static link, or it is a
14009 -Bsymbolic link and the symbol is defined
14010 locally, or the symbol was forced to be local
14011 because of a version file. */
14012 ;
14013 else
14014 {
14acf4dc 14015 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 14016 indx = h->elf.dynindx;
d881513a
AM		 14017 unresolved_reloc = FALSE;
14018 }
039b3fef 14019 ent = h->elf.got.glist;
d881513a 14020 }
411e1bfb 14021 else
5bd4f169 14022 {
d881513a
AM		 14023 if (local_got_ents == NULL)
14024 abort ();
14025 ent = local_got_ents[r_symndx];
5bd4f169 14026 }
d881513a
AM		 14027
14028 for (; ent != NULL; ent = ent->next)
31c76678 14029 if (ent->addend == orig_rel.r_addend
e717da7e 14030 && ent->owner == input_bfd
d881513a
AM		 14031 && ent->tls_type == tls_type)
14032 break;
5bd4f169 14033 }
411e1bfb 14034
927be08e
AM		 14035 if (ent == NULL)
14036 abort ();
14037 if (ent->is_indirect)
14038 ent = ent->got.ent;
14039 offp = &ent->got.offset;
14040 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 14041 if (got == NULL)
14042 abort ();
14043
411e1bfb
AM		 14044 /* The offset must always be a multiple of 8. We use the
14045 least significant bit to record whether we have already
14046 processed this entry. */
d881513a 14047 off = *offp;
411e1bfb
AM		 14048 if ((off & 1) != 0)
14049 off &= ~1;
5bd4f169
AM		 14050 else
14051 {
411e1bfb
AM		 14052 /* Generate relocs for the dynamic linker, except in
14053 the case of TLSLD where we'll use one entry per
14054 module. */
25f23106
AM		 14055 asection *relgot;
14056 bfd_boolean ifunc;
e717da7e 14057
d881513a 14058 *offp = off | 1;
25f23106
AM		 14059 relgot = NULL;
14060 ifunc = (h != NULL
14061 ? h->elf.type == STT_GNU_IFUNC
14062 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14063 if (ifunc)
33e44f2e 14064 relgot = htab->elf.irelplt;
19e08130
AM		 14065 else if ((info->shared || indx != 0)
14066 && (h == NULL
14067 || (tls_type == (TLS_TLS | TLS_LD)
14068 && !h->elf.def_dynamic)
14069 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14070 || h->elf.root.type != bfd_link_hash_undefweak))
14071 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14072 if (relgot != NULL)
5bd4f169 14073 {
e717da7e
AM		 14074 outrel.r_offset = (got->output_section->vma
14075 + got->output_offset
411e1bfb 14076 + off);
4cc603a5 14077 outrel.r_addend = addend;
d881513a 14078 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14079 {
411e1bfb 14080 outrel.r_addend = 0;
e515b051 14081 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14082 if (tls_type == (TLS_TLS | TLS_GD))
14083 {
e717da7e
AM		 14084 loc = relgot->contents;
14085 loc += (relgot->reloc_count++
d881513a
AM		 14086 * sizeof (Elf64_External_Rela));
14087 bfd_elf64_swap_reloca_out (output_bfd,
14088 &outrel, loc);
e515b051 14089 outrel.r_offset += 8;
4cc603a5 14090 outrel.r_addend = addend;
d881513a
AM		 14091 outrel.r_info
14092 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14093 }
411e1bfb 14094 }
951fd09b 14095 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14096 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14097 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14098 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14099 else if (indx != 0)
14100 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14101 else
81407a69 14102 {
25f23106
AM		 14103 if (ifunc)
14104 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14105 else
14106 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14107
14108 /* Write the .got section contents for the sake
14109 of prelink. */
e717da7e 14110 loc = got->contents + off;
23fbd6fa
JJ		 14111 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14112 loc);
81407a69 14113 }
81407a69
AM		 14114
14115 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14116 {
14117 outrel.r_addend += relocation;
14118 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 14119 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 14120 }
e717da7e
AM		 14121 loc = relgot->contents;
14122 loc += (relgot->reloc_count++
411e1bfb
AM		 14123 * sizeof (Elf64_External_Rela));
14124 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14125 }
14126
ad8e1ba5 14127 /* Init the .got section contents here if we're not
81407a69 14128 emitting a reloc. */
d881513a 14129 else
411e1bfb 14130 {
4cc603a5 14131 relocation += addend;
7b609f53
AM		 14132 if (tls_type == (TLS_TLS | TLS_LD))
14133 relocation = 1;
14134 else if (tls_type != 0)
411e1bfb 14135 {
e1918d23 14136 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 14137 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14138 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 14139
7b609f53
AM		 14140 if (tls_type == (TLS_TLS | TLS_GD))
14141 {
14142 bfd_put_64 (output_bfd, relocation,
e717da7e 14143 got->contents + off + 8);
7b609f53
AM		 14144 relocation = 1;
14145 }
411e1bfb 14146 }
7b609f53 14147
411e1bfb 14148 bfd_put_64 (output_bfd, relocation,
e717da7e 14149 got->contents + off);
5bd4f169
AM		 14150 }
14151 }
14152
65f38f15
AM		 14153 if (off >= (bfd_vma) -2)
14154 abort ();
14155
bf102f86
AM		 14156 relocation = got->output_section->vma + got->output_offset + off;
14157 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 14158 }
65f38f15
AM		 14159 break;
14160
14161 case R_PPC64_PLT16_HA:
14162 case R_PPC64_PLT16_HI:
14163 case R_PPC64_PLT16_LO:
14164 case R_PPC64_PLT32:
14165 case R_PPC64_PLT64:
14166 /* Relocation is to the entry for this symbol in the
14167 procedure linkage table. */
14168
14169 /* Resolve a PLT reloc against a local symbol directly,
14170 without using the procedure linkage table. */
14171 if (h == NULL)
14172 break;
14173
411e1bfb
AM		 14174 /* It's possible that we didn't make a PLT entry for this
14175 symbol. This happens when statically linking PIC code,
14176 or when using -Bsymbolic. Go find a match if there is a
14177 PLT entry. */
33e44f2e 14178 if (htab->elf.splt != NULL)
65f38f15 14179 {
411e1bfb 14180 struct plt_entry *ent;
039b3fef 14181 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14182 if (ent->plt.offset != (bfd_vma) -1
14183 && ent->addend == orig_rel.r_addend)
411e1bfb 14184 {
33e44f2e
AM		 14185 relocation = (htab->elf.splt->output_section->vma
14186 + htab->elf.splt->output_offset
411e1bfb
AM		 14187 + ent->plt.offset);
14188 unresolved_reloc = FALSE;
a345bc8d 14189 break;
411e1bfb 14190 }
65f38f15 14191 }
65f38f15 14192 break;
5bd4f169 14193
0b13192e
AM		 14194 case R_PPC64_TOC:
14195 /* Relocation value is TOC base. */
14196 relocation = TOCstart;
cf35638d 14197 if (r_symndx == STN_UNDEF)
0b13192e 14198 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 14199 else if (unresolved_reloc)
14200 ;
14201 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 14202 relocation += htab->stub_group[sec->id].toc_off;
14203 else
14204 unresolved_reloc = TRUE;
ab96bf03 14205 goto dodyn;
0b13192e 14206
5bd4f169
AM		 14207 /* TOC16 relocs. We want the offset relative to the TOC base,
14208 which is the address of the start of the TOC plus 0x8000.
14209 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14210 in this order. */
65f38f15
AM		 14211 case R_PPC64_TOC16:
14212 case R_PPC64_TOC16_LO:
14213 case R_PPC64_TOC16_HI:
14214 case R_PPC64_TOC16_DS:
14215 case R_PPC64_TOC16_LO_DS:
14216 case R_PPC64_TOC16_HA:
ad8e1ba5 14217 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 14218 break;
14219
14220 /* Relocate against the beginning of the section. */
65f38f15
AM		 14221 case R_PPC64_SECTOFF:
14222 case R_PPC64_SECTOFF_LO:
14223 case R_PPC64_SECTOFF_HI:
14224 case R_PPC64_SECTOFF_DS:
14225 case R_PPC64_SECTOFF_LO_DS:
14226 case R_PPC64_SECTOFF_HA:
4ce794b7 14227 if (sec != NULL)
65f38f15 14228 addend -= sec->output_section->vma;
5bd4f169
AM		 14229 break;
14230
25f23106
AM		 14231 case R_PPC64_REL16:
14232 case R_PPC64_REL16_LO:
14233 case R_PPC64_REL16_HI:
14234 case R_PPC64_REL16_HA:
14235 break;
14236
721956f4
AM		 14237 case R_PPC64_REL14:
14238 case R_PPC64_REL14_BRNTAKEN:
14239 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14240 case R_PPC64_REL24:
14241 break;
14242
411e1bfb
AM		 14243 case R_PPC64_TPREL16:
14244 case R_PPC64_TPREL16_LO:
14245 case R_PPC64_TPREL16_HI:
14246 case R_PPC64_TPREL16_HA:
14247 case R_PPC64_TPREL16_DS:
14248 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14249 case R_PPC64_TPREL16_HIGH:
14250 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14251 case R_PPC64_TPREL16_HIGHER:
14252 case R_PPC64_TPREL16_HIGHERA:
14253 case R_PPC64_TPREL16_HIGHEST:
14254 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14255 if (h != NULL
14256 && h->elf.root.type == bfd_link_hash_undefweak
14257 && h->elf.dynindx == -1)
14258 {
14259 /* Make this relocation against an undefined weak symbol
14260 resolve to zero. This is really just a tweak, since
14261 code using weak externs ought to check that they are
14262 defined before using them. */
14263 bfd_byte *p = contents + rel->r_offset - d_offset;
14264
14265 insn = bfd_get_32 (output_bfd, p);
14266 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14267 if (insn != 0)
14268 bfd_put_32 (output_bfd, insn, p);
14269 break;
14270 }
e1918d23 14271 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14272 if (info->shared)
14273 /* The TPREL16 relocs shouldn't really be used in shared
14274 libs as they will result in DT_TEXTREL being set, but
14275 support them anyway. */
14276 goto dodyn;
14277 break;
14278
14279 case R_PPC64_DTPREL16:
14280 case R_PPC64_DTPREL16_LO:
14281 case R_PPC64_DTPREL16_HI:
14282 case R_PPC64_DTPREL16_HA:
14283 case R_PPC64_DTPREL16_DS:
14284 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14285 case R_PPC64_DTPREL16_HIGH:
14286 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14287 case R_PPC64_DTPREL16_HIGHER:
14288 case R_PPC64_DTPREL16_HIGHERA:
14289 case R_PPC64_DTPREL16_HIGHEST:
14290 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 14291 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14292 break;
14293
45965137
AM		 14294 case R_PPC64_ADDR64_LOCAL:
14295 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14296 ? h->elf.other
14297 : sym->st_other);
14298 break;
14299
e515b051
AM		 14300 case R_PPC64_DTPMOD64:
14301 relocation = 1;
14302 addend = 0;
14303 goto dodyn;
14304
411e1bfb 14305 case R_PPC64_TPREL64:
e1918d23 14306 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14307 goto dodyn;
14308
14309 case R_PPC64_DTPREL64:
e1918d23 14310 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14311 /* Fall thru */
14312
65f38f15
AM		 14313 /* Relocations that may need to be propagated if this is a
14314 dynamic object. */
04c9666a 14315 case R_PPC64_REL30:
65f38f15
AM		 14316 case R_PPC64_REL32:
14317 case R_PPC64_REL64:
14318 case R_PPC64_ADDR14:
14319 case R_PPC64_ADDR14_BRNTAKEN:
14320 case R_PPC64_ADDR14_BRTAKEN:
14321 case R_PPC64_ADDR16:
14322 case R_PPC64_ADDR16_DS:
14323 case R_PPC64_ADDR16_HA:
14324 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14325 case R_PPC64_ADDR16_HIGH:
14326 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14327 case R_PPC64_ADDR16_HIGHER:
14328 case R_PPC64_ADDR16_HIGHERA:
14329 case R_PPC64_ADDR16_HIGHEST:
14330 case R_PPC64_ADDR16_HIGHESTA:
14331 case R_PPC64_ADDR16_LO:
14332 case R_PPC64_ADDR16_LO_DS:
14333 case R_PPC64_ADDR24:
65f38f15
AM		 14334 case R_PPC64_ADDR32:
14335 case R_PPC64_ADDR64:
14336 case R_PPC64_UADDR16:
14337 case R_PPC64_UADDR32:
14338 case R_PPC64_UADDR64:
411e1bfb 14339 dodyn:
5d1634d7 14340 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14341 break;
14342
41bd81ab
AM		 14343 if (NO_OPD_RELOCS && is_opd)
14344 break;
14345
65f38f15 14346 if ((info->shared
4e795f50 14347 && (h == NULL
039b3fef
AM		 14348 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14349 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14350 && (must_be_dyn_reloc (info, r_type)
039b3fef 14351 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 14352 || (ELIMINATE_COPY_RELOCS
14353 && !info->shared
65f38f15 14354 && h != NULL
039b3fef 14355 && h->elf.dynindx != -1
f5385ebf 14356 && !h->elf.non_got_ref
25f23106
AM		 14357 && !h->elf.def_regular)
14358 || (!info->shared
14359 && (h != NULL
14360 ? h->elf.type == STT_GNU_IFUNC
14361 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14362 {
b34976b6 14363 bfd_boolean skip, relocate;
65f38f15 14364 asection *sreloc;
1cf1f670 14365 bfd_vma out_off;
65f38f15
AM		 14366
14367 /* When generating a dynamic object, these relocations
14368 are copied into the output file to be resolved at run
14369 time. */
14370
b34976b6
AM		 14371 skip = FALSE;
14372 relocate = FALSE;
65f38f15 14373
1cf1f670
AM		 14374 out_off = _bfd_elf_section_offset (output_bfd, info,
14375 input_section, rel->r_offset);
14376 if (out_off == (bfd_vma) -1)
b34976b6 14377 skip = TRUE;
1cf1f670 14378 else if (out_off == (bfd_vma) -2)
b34976b6 14379 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14380 out_off += (input_section->output_section->vma
14381 + input_section->output_offset);
14382 outrel.r_offset = out_off;
411e1bfb 14383 outrel.r_addend = rel->r_addend;
65f38f15 14384
1cf1f670
AM		 14385 /* Optimize unaligned reloc use. */
14386 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14387 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14388 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14389 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14390 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14391 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14392 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14393 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14394 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14395
65f38f15 14396 if (skip)
0bb2d96a 14397 memset (&outrel, 0, sizeof outrel);
afe397ea 14398 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14399 && !is_opd
14400 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14401 {
14402 BFD_ASSERT (h->elf.dynindx != -1);
14403 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14404 }
65f38f15
AM		 14405 else
14406 {
41bd81ab
AM		 14407 /* This symbol is local, or marked to become local,
14408 or this is an opd section reloc which must point
14409 at a local function. */
65f38f15 14410 outrel.r_addend += relocation;
e86ce104 14411 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14412 {
3fad3c7c 14413 if (is_opd && h != NULL)
afbe61cf
AM		 14414 {
14415 /* Lie about opd entries. This case occurs
14416 when building shared libraries and we
14417 reference a function in another shared
3fad3c7c
AM		 14418 lib. The same thing happens for a weak
14419 definition in an application that's
14420 overridden by a strong definition in a
14421 shared lib. (I believe this is a generic
14422 bug in binutils handling of weak syms.)
14423 In these cases we won't use the opd
1e2f5b6e 14424 entry in this lib. */
b34976b6 14425 unresolved_reloc = FALSE;
afbe61cf 14426 }
25f23106
AM		 14427 if (!is_opd
14428 && r_type == R_PPC64_ADDR64
14429 && (h != NULL
14430 ? h->elf.type == STT_GNU_IFUNC
14431 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14432 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14433 else
14434 {
14435 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14436
25f23106
AM		 14437 /* We need to relocate .opd contents for ld.so.
14438 Prelink also wants simple and consistent rules
14439 for relocs. This make all RELATIVE relocs have
14440 *r_offset equal to r_addend. */
14441 relocate = TRUE;
14442 }
65f38f15
AM		 14443 }
14444 else
14445 {
14446 long indx = 0;
14447
25f23106
AM		 14448 if (h != NULL
14449 ? h->elf.type == STT_GNU_IFUNC
14450 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14451 {
25f53a85 14452 info->callbacks->einfo
bc30df16
AM		 14453 (_("%P: %H: %s for indirect "
14454 "function `%T' unsupported\n"),
25f53a85 14455 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14456 ppc64_elf_howto_table[r_type]->name,
14457 sym_name);
14458 ret = FALSE;
14459 }
cf35638d 14460 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14461 ;
14462 else if (sec == NULL || sec->owner == NULL)
14463 {
14464 bfd_set_error (bfd_error_bad_value);
b34976b6 14465 return FALSE;
65f38f15
AM		 14466 }
14467 else
14468 {
14469 asection *osec;
14470
14471 osec = sec->output_section;
14472 indx = elf_section_data (osec)->dynindx;
14473
74541ad4
AM		 14474 if (indx == 0)
14475 {
14476 if ((osec->flags & SEC_READONLY) == 0
14477 && htab->elf.data_index_section != NULL)
14478 osec = htab->elf.data_index_section;
14479 else
14480 osec = htab->elf.text_index_section;
14481 indx = elf_section_data (osec)->dynindx;
14482 }
14483 BFD_ASSERT (indx != 0);
14484
65f38f15
AM		 14485 /* We are turning this relocation into one
14486 against a section symbol, so subtract out
14487 the output section's address but not the
14488 offset of the input section in the output
14489 section. */
14490 outrel.r_addend -= osec->vma;
14491 }
14492
14493 outrel.r_info = ELF64_R_INFO (indx, r_type);
14494 }
14495 }
14496
14497 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14498 if (h != NULL
14499 ? h->elf.type == STT_GNU_IFUNC
14500 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14501 sreloc = htab->elf.irelplt;
65f38f15
AM		 14502 if (sreloc == NULL)
14503 abort ();
14504
dfbb6ac9
AM		 14505 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14506 >= sreloc->size)
14507 abort ();
947216bf
AM		 14508 loc = sreloc->contents;
14509 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14510 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14511
14512 /* If this reloc is against an external symbol, it will
14513 be computed at runtime, so there's no need to do
81407a69
AM		 14514 anything now. However, for the sake of prelink ensure
14515 that the section contents are a known value. */
65f38f15 14516 if (! relocate)
81407a69
AM		 14517 {
14518 unresolved_reloc = FALSE;
14519 /* The value chosen here is quite arbitrary as ld.so
14520 ignores section contents except for the special
14521 case of .opd where the contents might be accessed
14522 before relocation. Choose zero, as that won't
14523 cause reloc overflow. */
14524 relocation = 0;
14525 addend = 0;
14526 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14527 to improve backward compatibility with older
14528 versions of ld. */
14529 if (r_type == R_PPC64_ADDR64)
14530 addend = outrel.r_addend;
14531 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14532 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14533 addend = (input_section->output_section->vma
14534 + input_section->output_offset
14535 + rel->r_offset);
81407a69 14536 }
65f38f15 14537 }
5bd4f169
AM		 14538 break;
14539
65f38f15
AM		 14540 case R_PPC64_COPY:
14541 case R_PPC64_GLOB_DAT:
14542 case R_PPC64_JMP_SLOT:
25f23106 14543 case R_PPC64_JMP_IREL:
65f38f15
AM		 14544 case R_PPC64_RELATIVE:
14545 /* We shouldn't ever see these dynamic relocs in relocatable
14546 files. */
ae9a127f 14547 /* Fall through. */
65f38f15
AM		 14548
14549 case R_PPC64_PLTGOT16:
14550 case R_PPC64_PLTGOT16_DS:
14551 case R_PPC64_PLTGOT16_HA:
14552 case R_PPC64_PLTGOT16_HI:
14553 case R_PPC64_PLTGOT16_LO:
14554 case R_PPC64_PLTGOT16_LO_DS:
14555 case R_PPC64_PLTREL32:
14556 case R_PPC64_PLTREL64:
14557 /* These ones haven't been implemented yet. */
14558
25f53a85 14559 info->callbacks->einfo
bc30df16 14560 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14561 input_bfd,
4ce794b7 14562 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14563
14564 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14565 ret = FALSE;
5bd4f169 14566 continue;
65f38f15 14567 }
5bd4f169 14568
67f0cbdb
AM		 14569 /* Multi-instruction sequences that access the TOC can be
14570 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14571 to nop; addi rb,r2,x; */
14572 switch (r_type)
14573 {
14574 default:
14575 break;
14576
14577 case R_PPC64_GOT_TLSLD16_HI:
14578 case R_PPC64_GOT_TLSGD16_HI:
14579 case R_PPC64_GOT_TPREL16_HI:
14580 case R_PPC64_GOT_DTPREL16_HI:
14581 case R_PPC64_GOT16_HI:
14582 case R_PPC64_TOC16_HI:
14583 /* These relocs would only be useful if building up an
14584 offset to later add to r2, perhaps in an indexed
14585 addressing mode instruction. Don't try to optimize.
14586 Unfortunately, the possibility of someone building up an
14587 offset like this or even with the HA relocs, means that
14588 we need to check the high insn when optimizing the low
14589 insn. */
14590 break;
14591
14592 case R_PPC64_GOT_TLSLD16_HA:
14593 case R_PPC64_GOT_TLSGD16_HA:
14594 case R_PPC64_GOT_TPREL16_HA:
14595 case R_PPC64_GOT_DTPREL16_HA:
14596 case R_PPC64_GOT16_HA:
14597 case R_PPC64_TOC16_HA:
98528052 14598 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14599 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14600 {
14601 bfd_byte *p = contents + (rel->r_offset & ~3);
14602 bfd_put_32 (input_bfd, NOP, p);
14603 }
67f0cbdb
AM		 14604 break;
14605
14606 case R_PPC64_GOT_TLSLD16_LO:
14607 case R_PPC64_GOT_TLSGD16_LO:
14608 case R_PPC64_GOT_TPREL16_LO_DS:
14609 case R_PPC64_GOT_DTPREL16_LO_DS:
14610 case R_PPC64_GOT16_LO:
14611 case R_PPC64_GOT16_LO_DS:
14612 case R_PPC64_TOC16_LO:
14613 case R_PPC64_TOC16_LO_DS:
98528052 14614 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14615 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14616 {
14617 bfd_byte *p = contents + (rel->r_offset & ~3);
14618 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14619 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14620 {
14621 /* Transform addic to addi when we change reg. */
14622 insn &= ~((0x3f << 26) | (0x1f << 16));
14623 insn |= (14u << 26) | (2 << 16);
14624 }
14625 else
67f0cbdb 14626 {
98528052
AM		 14627 insn &= ~(0x1f << 16);
14628 insn |= 2 << 16;
67f0cbdb 14629 }
560c8763 14630 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14631 }
14632 break;
14633 }
14634
65f38f15 14635 /* Do any further special processing. */
b80eed39 14636 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14637 switch (r_type)
14638 {
14639 default:
14640 break;
14641
25f23106 14642 case R_PPC64_REL16_HA:
f9c6b907
AM		 14643 case R_PPC64_ADDR16_HA:
14644 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14645 case R_PPC64_ADDR16_HIGHERA:
14646 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14647 case R_PPC64_TOC16_HA:
14648 case R_PPC64_SECTOFF_HA:
411e1bfb 14649 case R_PPC64_TPREL16_HA:
f9c6b907 14650 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14651 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14652 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14653 case R_PPC64_DTPREL16_HA:
14654 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14655 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14656 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14657 /* It's just possible that this symbol is a weak symbol
14658 that's not actually defined anywhere. In that case,
14659 'sec' would be NULL, and we should leave the symbol
14660 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14661 if (sec == NULL)
14662 break;
14663 /* Fall thru */
14664
14665 case R_PPC64_GOT16_HA:
14666 case R_PPC64_PLTGOT16_HA:
14667 case R_PPC64_PLT16_HA:
14668 case R_PPC64_GOT_TLSGD16_HA:
14669 case R_PPC64_GOT_TLSLD16_HA:
14670 case R_PPC64_GOT_TPREL16_HA:
14671 case R_PPC64_GOT_DTPREL16_HA:
14672 /* Add 0x10000 if sign bit in 0:15 is set.
14673 Bits 0:15 are not used. */
14674 addend += 0x8000;
65f38f15
AM		 14675 break;
14676
14677 case R_PPC64_ADDR16_DS:
14678 case R_PPC64_ADDR16_LO_DS:
14679 case R_PPC64_GOT16_DS:
14680 case R_PPC64_GOT16_LO_DS:
14681 case R_PPC64_PLT16_LO_DS:
14682 case R_PPC64_SECTOFF_DS:
14683 case R_PPC64_SECTOFF_LO_DS:
14684 case R_PPC64_TOC16_DS:
14685 case R_PPC64_TOC16_LO_DS:
14686 case R_PPC64_PLTGOT16_DS:
14687 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14688 case R_PPC64_GOT_TPREL16_DS:
14689 case R_PPC64_GOT_TPREL16_LO_DS:
14690 case R_PPC64_GOT_DTPREL16_DS:
14691 case R_PPC64_GOT_DTPREL16_LO_DS:
14692 case R_PPC64_TPREL16_DS:
14693 case R_PPC64_TPREL16_LO_DS:
14694 case R_PPC64_DTPREL16_DS:
14695 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14696 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14697 mask = 3;
14698 /* If this reloc is against an lq insn, then the value must be
14699 a multiple of 16. This is somewhat of a hack, but the
14700 "correct" way to do this by defining _DQ forms of all the
14701 _DS relocs bloats all reloc switches in this file. It
14702 doesn't seem to make much sense to use any of these relocs
14703 in data, so testing the insn should be safe. */
494dac0c 14704 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14705 mask = 15;
14706 if (((relocation + addend) & mask) != 0)
65f38f15 14707 {
25f53a85 14708 info->callbacks->einfo
8de848d8 14709 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14710 input_bfd, input_section, rel->r_offset,
b80eed39 14711 howto->name,
adadcc0c 14712 mask + 1);
65f38f15 14713 bfd_set_error (bfd_error_bad_value);
b34976b6 14714 ret = FALSE;
65f38f15
AM		 14715 continue;
14716 }
14717 break;
5bd4f169
AM		 14718 }
14719
239e1f3a
AM		 14720 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14721 because such sections are not SEC_ALLOC and thus ld.so will
14722 not process them. */
65f38f15 14723 if (unresolved_reloc
239e1f3a 14724 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14725 && h->elf.def_dynamic)
14726 && _bfd_elf_section_offset (output_bfd, info, input_section,
14727 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14728 {
25f53a85 14729 info->callbacks->einfo
bc30df16 14730 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14731 input_bfd, input_section, rel->r_offset,
b80eed39 14732 howto->name,
039b3fef 14733 h->elf.root.root.string);
b34976b6 14734 ret = FALSE;
9c07fe7c 14735 }
5bd4f169 14736
b80eed39
AM		 14737 /* 16-bit fields in insns mostly have signed values, but a
14738 few insns have 16-bit unsigned values. Really, we should
14739 have different reloc types. */
14740 if (howto->complain_on_overflow != complain_overflow_dont
14741 && howto->dst_mask == 0xffff
14742 && (input_section->flags & SEC_CODE) != 0)
14743 {
14744 enum complain_overflow complain = complain_overflow_signed;
14745
14746 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14747 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14748 complain = complain_overflow_bitfield;
14749 else if (howto->rightshift == 0
14750 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14751 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14752 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14753 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14754 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14755 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14756 complain = complain_overflow_unsigned;
14757 if (howto->complain_on_overflow != complain)
14758 {
14759 alt_howto = *howto;
14760 alt_howto.complain_on_overflow = complain;
14761 howto = &alt_howto;
14762 }
14763 }
14764
14765 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14766 rel->r_offset, relocation, addend);
5bd4f169 14767
ef60b7ff 14768 if (r != bfd_reloc_ok)
5bd4f169 14769 {
bc30df16 14770 char *more_info = NULL;
b80eed39 14771 const char *reloc_name = howto->name;
bc30df16
AM		 14772
14773 if (reloc_dest != DEST_NORMAL)
14774 {
14775 more_info = bfd_malloc (strlen (reloc_name) + 8);
14776 if (more_info != NULL)
14777 {
14778 strcpy (more_info, reloc_name);
14779 strcat (more_info, (reloc_dest == DEST_OPD
14780 ? " (OPD)" : " (stub)"));
14781 reloc_name = more_info;
14782 }
14783 }
14784
cd27b276 14785 if (r == bfd_reloc_overflow)
5bd4f169 14786 {
cd27b276
AM		 14787 if (warned)
14788 continue;
14789 if (h != NULL
039b3fef 14790 && h->elf.root.type == bfd_link_hash_undefweak
b80eed39 14791 && howto->pc_relative)
5bd4f169
AM		 14792 {
14793 /* Assume this is a call protected by other code that
14794 detects the symbol is undefined. If this is the case,
14795 we can safely ignore the overflow. If not, the
14796 program is hosed anyway, and a little warning isn't
14797 going to help. */
14798
14799 continue;
14800 }
14801
ef60b7ff 14802 if (!((*info->callbacks->reloc_overflow)
bc30df16
AM		 14803 (info, &h->elf.root, sym_name,
14804 reloc_name, orig_rel.r_addend,
14805 input_bfd, input_section, rel->r_offset)))
b34976b6 14806 return FALSE;
ef60b7ff
AM		 14807 }
14808 else
14809 {
25f53a85 14810 info->callbacks->einfo
bc30df16 14811 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14812 input_bfd, input_section, rel->r_offset,
bc30df16 14813 reloc_name, sym_name, (int) r);
b34976b6 14814 ret = FALSE;
ef60b7ff 14815 }
bc30df16
AM		 14816 if (more_info != NULL)
14817 free (more_info);
5bd4f169 14818 }
5bd4f169
AM		 14819 }
14820
645ea6a9
AM		 14821 /* If we're emitting relocations, then shortly after this function
14822 returns, reloc offsets and addends for this section will be
14823 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14824 file rather than the input. Save a copy of the relocs for
14825 opd_entry_value. */
4cc603a5 14826 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 14827 {
14828 bfd_size_type amt;
14829 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14830 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14831 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14832 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14833 if (rel == NULL)
14834 return FALSE;
14835 memcpy (rel, relocs, amt);
14836 }
5bd4f169
AM		 14837 return ret;
14838}
14839
754021d0
AM		 14840/* Adjust the value of any local symbols in opd sections. */
14841
6e0b88f1 14842static int
754021d0
AM		 14843ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14844 const char *name ATTRIBUTE_UNUSED,
14845 Elf_Internal_Sym *elfsym,
14846 asection *input_sec,
14847 struct elf_link_hash_entry *h)
14848{
74f0fb50
AM		 14849 struct _opd_sec_data *opd;
14850 long adjust;
754021d0
AM		 14851 bfd_vma value;
14852
4025353c 14853 if (h != NULL)
6e0b88f1 14854 return 1;
4025353c 14855
74f0fb50
AM		 14856 opd = get_opd_info (input_sec);
14857 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14858 return 1;
754021d0
AM		 14859
14860 value = elfsym->st_value - input_sec->output_offset;
14861 if (!info->relocatable)
14862 value -= input_sec->output_section->vma;
14863
51aecdc5 14864 adjust = opd->adjust[OPD_NDX (value)];
4025353c 14865 if (adjust == -1)
6e0b88f1
AM		 14866 return 2;
14867
14868 elfsym->st_value += adjust;
14869 return 1;
754021d0
AM		 14870}
14871
5bd4f169
AM		 14872/* Finish up dynamic symbol handling. We set the contents of various
14873 dynamic sections here. */
14874
b34976b6 14875static bfd_boolean
4ce794b7
AM		 14876ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14877 struct bfd_link_info *info,
14878 struct elf_link_hash_entry *h,
ab6dce23 14879 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14880{
65f38f15 14881 struct ppc_link_hash_table *htab;
8387904d
AM		 14882 struct plt_entry *ent;
14883 Elf_Internal_Rela rela;
14884 bfd_byte *loc;
5bd4f169 14885
65f38f15 14886 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14887 if (htab == NULL)
14888 return FALSE;
5bd4f169 14889
8387904d
AM		 14890 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14891 if (ent->plt.offset != (bfd_vma) -1)
14892 {
14893 /* This symbol has an entry in the procedure linkage
14894 table. Set it up. */
e054468f
AM		 14895 if (!htab->elf.dynamic_sections_created
14896 || h->dynindx == -1)
14897 {
14898 BFD_ASSERT (h->type == STT_GNU_IFUNC
14899 && h->def_regular
14900 && (h->root.type == bfd_link_hash_defined
14901 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14902 rela.r_offset = (htab->elf.iplt->output_section->vma
14903 + htab->elf.iplt->output_offset
25f23106 14904 + ent->plt.offset);
ee67d69a
AM		 14905 if (htab->opd_abi)
14906 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14907 else
14908 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14909 rela.r_addend = (h->root.u.def.value
14910 + h->root.u.def.section->output_offset
14911 + h->root.u.def.section->output_section->vma
14912 + ent->addend);
33e44f2e
AM		 14913 loc = (htab->elf.irelplt->contents
14914 + (htab->elf.irelplt->reloc_count++
25f23106 14915 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14916 }
14917 else
14918 {
33e44f2e
AM		 14919 rela.r_offset = (htab->elf.splt->output_section->vma
14920 + htab->elf.splt->output_offset
25f23106 14921 + ent->plt.offset);
e054468f
AM		 14922 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14923 rela.r_addend = ent->addend;
33e44f2e 14924 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14925 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14926 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14927 }
8387904d 14928 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14929
14930 if (!htab->opd_abi)
14931 {
14932 if (!h->def_regular)
14933 {
14934 /* Mark the symbol as undefined, rather than as
14935 defined in glink. Leave the value if there were
14936 any relocations where pointer equality matters
14937 (this is a clue for the dynamic linker, to make
14938 function pointer comparisons work between an
14939 application and shared library), otherwise set it
14940 to zero. */
14941 sym->st_shndx = SHN_UNDEF;
14942 if (!h->pointer_equality_needed)
14943 sym->st_value = 0;
14944 else if (!h->ref_regular_nonweak)
14945 {
14946 /* This breaks function pointer comparisons, but
14947 that is better than breaking tests for a NULL
14948 function pointer. */
14949 sym->st_value = 0;
14950 }
14951 }
14952 }
8387904d 14953 }
5bd4f169 14954
f5385ebf 14955 if (h->needs_copy)
5bd4f169 14956 {
65f38f15 14957 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 14958
65f38f15
AM		 14959 if (h->dynindx == -1
14960 || (h->root.type != bfd_link_hash_defined
14961 && h->root.type != bfd_link_hash_defweak)
4ce794b7 14962 || htab->relbss == NULL)
65f38f15 14963 abort ();
5bd4f169
AM		 14964
14965 rela.r_offset = (h->root.u.def.value
14966 + h->root.u.def.section->output_section->vma
14967 + h->root.u.def.section->output_offset);
14968 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14969 rela.r_addend = 0;
4ce794b7
AM		 14970 loc = htab->relbss->contents;
14971 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 14972 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 14973 }
14974
b34976b6 14975 return TRUE;
5bd4f169
AM		 14976}
14977
65f38f15
AM		 14978/* Used to decide how to sort relocs in an optimal manner for the
14979 dynamic linker, before writing them out. */
14980
14981static enum elf_reloc_type_class
7e612e98
AM		 14982ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14983 const asection *rel_sec,
14984 const Elf_Internal_Rela *rela)
65f38f15 14985{
04c9666a 14986 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 14987 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14988
33e44f2e 14989 if (rel_sec == htab->elf.irelplt)
7e612e98 14990 return reloc_class_ifunc;
a33d1f77 14991
4ce794b7 14992 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14993 switch (r_type)
65f38f15
AM		 14994 {
14995 case R_PPC64_RELATIVE:
14996 return reloc_class_relative;
14997 case R_PPC64_JMP_SLOT:
14998 return reloc_class_plt;
14999 case R_PPC64_COPY:
15000 return reloc_class_copy;
15001 default:
15002 return reloc_class_normal;
15003 }
15004}
15005
5bd4f169
AM		 15006/* Finish up the dynamic sections. */
15007
b34976b6 15008static bfd_boolean
4ce794b7
AM		 15009ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15010 struct bfd_link_info *info)
5bd4f169 15011{
65f38f15
AM		 15012 struct ppc_link_hash_table *htab;
15013 bfd *dynobj;
5bd4f169 15014 asection *sdyn;
5bd4f169 15015
65f38f15 15016 htab = ppc_hash_table (info);
4dfe6ac6
NC		 15017 if (htab == NULL)
15018 return FALSE;
15019
65f38f15 15020 dynobj = htab->elf.dynobj;
3d4d4302 15021 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 15022
65f38f15 15023 if (htab->elf.dynamic_sections_created)
5bd4f169 15024 {
5bd4f169
AM		 15025 Elf64_External_Dyn *dyncon, *dynconend;
15026
33e44f2e 15027 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 15028 abort ();
5bd4f169
AM		 15029
15030 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 15031 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 15032 for (; dyncon < dynconend; dyncon++)
15033 {
15034 Elf_Internal_Dyn dyn;
19397422 15035 asection *s;
5bd4f169
AM		 15036
15037 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15038
15039 switch (dyn.d_tag)
15040 {
65f38f15
AM		 15041 default:
15042 continue;
5bd4f169 15043
5d1634d7 15044 case DT_PPC64_GLINK:
4ce794b7 15045 s = htab->glink;
6348e046 15046 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15047 /* We stupidly defined DT_PPC64_GLINK to be the start
15048 of glink rather than the first entry point, which is
15049 what ld.so needs, and now have a bigger stub to
15050 support automatic multiple TOCs. */
b9e5796b 15051 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15052 break;
15053
19397422
AM		 15054 case DT_PPC64_OPD:
15055 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15056 if (s == NULL)
15057 continue;
15058 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15059 break;
15060
e8910a83
AM		 15061 case DT_PPC64_OPT:
15062 if (htab->do_multi_toc && htab->multi_toc_needed)
15063 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15064 break;
15065
19397422
AM		 15066 case DT_PPC64_OPDSZ:
15067 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15068 if (s == NULL)
15069 continue;
eea6121a 15070 dyn.d_un.d_val = s->size;
19397422
AM		 15071 break;
15072
65f38f15 15073 case DT_PLTGOT:
33e44f2e 15074 s = htab->elf.splt;
6348e046 15075 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15076 break;
15077
15078 case DT_JMPREL:
33e44f2e 15079 s = htab->elf.srelplt;
6348e046 15080 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15081 break;
5bd4f169 15082
65f38f15 15083 case DT_PLTRELSZ:
33e44f2e 15084 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15085 break;
15086
15087 case DT_RELASZ:
15088 /* Don't count procedure linkage table relocs in the
15089 overall reloc count. */
33e44f2e 15090 s = htab->elf.srelplt;
6348e046
AM		 15091 if (s == NULL)
15092 continue;
eea6121a 15093 dyn.d_un.d_val -= s->size;
6348e046
AM		 15094 break;
15095
15096 case DT_RELA:
15097 /* We may not be using the standard ELF linker script.
15098 If .rela.plt is the first .rela section, we adjust
15099 DT_RELA to not include it. */
33e44f2e 15100 s = htab->elf.srelplt;
6348e046
AM		 15101 if (s == NULL)
15102 continue;
15103 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15104 continue;
eea6121a 15105 dyn.d_un.d_ptr += s->size;
65f38f15 15106 break;
5bd4f169 15107 }
5bd4f169 15108
65f38f15 15109 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15110 }
5bd4f169
AM		 15111 }
15112
33e44f2e 15113 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15114 {
15115 /* Fill in the first entry in the global offset table.
15116 We use it to hold the link-time TOCbase. */
15117 bfd_put_64 (output_bfd,
60ee0d4a 15118 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15119 htab->elf.sgot->contents);
5d1634d7
AM		 15120
15121 /* Set .got entry size. */
33e44f2e 15122 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15123 }
15124
33e44f2e 15125 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15126 {
15127 /* Set .plt entry size. */
33e44f2e 15128 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15129 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15130 }
15131
84f5d08e
AM		 15132 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15133 brlt ourselves if emitrelocations. */
15134 if (htab->brlt != NULL
15135 && htab->brlt->reloc_count != 0
15136 && !_bfd_elf_link_output_relocs (output_bfd,
15137 htab->brlt,
d4730f92 15138 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15139 elf_section_data (htab->brlt)->relocs,
15140 NULL))
15141 return FALSE;
15142
176a0d42
AM		 15143 if (htab->glink != NULL
15144 && htab->glink->reloc_count != 0
15145 && !_bfd_elf_link_output_relocs (output_bfd,
15146 htab->glink,
d4730f92 15147 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15148 elf_section_data (htab->glink)->relocs,
15149 NULL))
15150 return FALSE;
15151
58d180e8 15152 if (htab->glink_eh_frame != NULL
da44f4e5
AM		 15153 && htab->glink_eh_frame->size != 0)
15154 {
15155 bfd_vma val;
15156 bfd_byte *p;
15157 asection *stub_sec;
15158
15159 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15160 for (stub_sec = htab->params->stub_bfd->sections;
15161 stub_sec != NULL;
15162 stub_sec = stub_sec->next)
15163 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15164 {
15165 /* FDE length. */
15166 p += 4;
15167 /* CIE pointer. */
15168 p += 4;
15169 /* Offset to stub section. */
15170 val = (stub_sec->output_section->vma
15171 + stub_sec->output_offset);
15172 val -= (htab->glink_eh_frame->output_section->vma
15173 + htab->glink_eh_frame->output_offset
15174 + (p - htab->glink_eh_frame->contents));
15175 if (val + 0x80000000 > 0xffffffff)
15176 {
15177 info->callbacks->einfo
15178 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15179 stub_sec->name);
15180 return FALSE;
15181 }
15182 bfd_put_32 (dynobj, val, p);
15183 p += 4;
15184 /* stub section size. */
15185 p += 4;
15186 /* Augmentation. */
15187 p += 1;
15188 /* Pad. */
15189 p += 7;
15190 }
15191 if (htab->glink != NULL && htab->glink->size != 0)
15192 {
15193 /* FDE length. */
15194 p += 4;
15195 /* CIE pointer. */
15196 p += 4;
15197 /* Offset to .glink. */
15198 val = (htab->glink->output_section->vma
15199 + htab->glink->output_offset
15200 + 8);
15201 val -= (htab->glink_eh_frame->output_section->vma
15202 + htab->glink_eh_frame->output_offset
15203 + (p - htab->glink_eh_frame->contents));
15204 if (val + 0x80000000 > 0xffffffff)
15205 {
15206 info->callbacks->einfo
15207 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15208 htab->glink->name);
15209 return FALSE;
15210 }
15211 bfd_put_32 (dynobj, val, p);
15212 p += 4;
15213 /* .glink size. */
15214 p += 4;
15215 /* Augmentation. */
15216 p += 1;
15217 /* Ops. */
15218 p += 7;
15219 }
15220
15221 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15222 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15223 htab->glink_eh_frame,
15224 htab->glink_eh_frame->contents))
15225 return FALSE;
15226 }
58d180e8 15227
e717da7e 15228 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15229 since we didn't add them to DYNOBJ. We know dynobj is the first
15230 bfd. */
c72f2fb2 15231 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15232 {
15233 asection *s;
7b53ace3 15234
0c8d6e5c 15235 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15236 continue;
15237
e717da7e
AM		 15238 s = ppc64_elf_tdata (dynobj)->got;
15239 if (s != NULL
eea6121a 15240 && s->size != 0
e717da7e
AM		 15241 && s->output_section != bfd_abs_section_ptr
15242 && !bfd_set_section_contents (output_bfd, s->output_section,
15243 s->contents, s->output_offset,
eea6121a 15244 s->size))
e717da7e
AM		 15245 return FALSE;
15246 s = ppc64_elf_tdata (dynobj)->relgot;
15247 if (s != NULL
eea6121a 15248 && s->size != 0
e717da7e
AM		 15249 && s->output_section != bfd_abs_section_ptr
15250 && !bfd_set_section_contents (output_bfd, s->output_section,
15251 s->contents, s->output_offset,
eea6121a 15252 s->size))
e717da7e
AM		 15253 return FALSE;
15254 }
f6c52c13 15255
b34976b6 15256 return TRUE;
5bd4f169
AM		 15257}
15258
5bd4f169 15259#include "elf64-target.h"
7b8e7dad
AM		 15260
15261/* FreeBSD support */
15262
15263#undef TARGET_LITTLE_SYM
15264#undef TARGET_LITTLE_NAME
15265
15266#undef TARGET_BIG_SYM
6d00b590 15267#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15268#undef TARGET_BIG_NAME
15269#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15270
15271#undef ELF_OSABI
15272#define ELF_OSABI ELFOSABI_FREEBSD
15273
15274#undef elf64_bed
15275#define elf64_bed elf64_powerpc_fbsd_bed
15276
15277#include "elf64-target.h"
15278
GDB Binutils - Deliverables
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