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Set DF_STATIC_TLS for PIEs
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
4b95cf5c 2 Copyright (C) 1999-2014 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
24718e3b 67#define ELF_COMMONPAGESIZE 0x1000
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 */
411e1bfb
AM		 261 2, /* size (0 = byte, 1 = short, 2 = long) */
262 32, /* 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 {
74f0fb50
AM		 2957 /* An array with one entry for each opd function descriptor. */
2958 struct _opd_sec_data
2959 {
2960 /* Points to the function code section for local opd entries. */
2961 asection **func_sec;
2962
2963 /* After editing .opd, adjust references to opd local syms. */
2964 long *adjust;
2965 } opd;
7c8fe5c4 2966
3a71aa26
AM		 2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2969 {
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2971 unsigned *symndx;
2972
2973 /* And the relocation addend. */
2974 bfd_vma *add;
2975 } toc;
7c8fe5c4
AM		 2976 } u;
2977
2978 enum _ppc64_sec_type sec_type:2;
411e1bfb 2979
7c8fe5c4
AM		 2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2983};
2984
2985#define ppc64_elf_section_data(sec) \
411e1bfb 2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2987
2988static bfd_boolean
4ce794b7 2989ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2990{
f592407e
AM		 2991 if (!sec->used_by_bfd)
2992 {
2993 struct _ppc64_elf_section_data *sdata;
2994 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2995
f592407e
AM		 2996 sdata = bfd_zalloc (abfd, amt);
2997 if (sdata == NULL)
2998 return FALSE;
2999 sec->used_by_bfd = sdata;
3000 }
f0abc2a1
AM		 3001
3002 return _bfd_elf_new_section_hook (abfd, sec);
3003}
4025353c 3004
74f0fb50 3005static struct _opd_sec_data *
4025353c
AM		 3006get_opd_info (asection * sec)
3007{
3008 if (sec != NULL
3009 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 3010 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 3011 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM		 3012 return NULL;
3013}
90e3cdf2
JJ		 3014\f
3015/* Parameters for the qsort hook. */
90e3cdf2
JJ		 3016static bfd_boolean synthetic_relocatable;
3017
699733f6 3018/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 3019
3020static int
3021compare_symbols (const void *ap, const void *bp)
3022{
3023 const asymbol *a = * (const asymbol **) ap;
3024 const asymbol *b = * (const asymbol **) bp;
3025
699733f6
AM		 3026 /* Section symbols first. */
3027 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 3028 return -1;
699733f6 3029 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 3030 return 1;
3031
699733f6 3032 /* then .opd symbols. */
ffcfec52
AM		 3033 if (strcmp (a->section->name, ".opd") == 0
3034 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 3035 return -1;
ffcfec52
AM		 3036 if (strcmp (a->section->name, ".opd") != 0
3037 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ		 3038 return 1;
3039
699733f6 3040 /* then other code symbols. */
90e3cdf2
JJ		 3041 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3042 == (SEC_CODE | SEC_ALLOC)
3043 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 != (SEC_CODE | SEC_ALLOC))
3045 return -1;
3046
3047 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3048 != (SEC_CODE | SEC_ALLOC)
3049 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 == (SEC_CODE | SEC_ALLOC))
3051 return 1;
3052
3053 if (synthetic_relocatable)
3054 {
3055 if (a->section->id < b->section->id)
3056 return -1;
3057
3058 if (a->section->id > b->section->id)
3059 return 1;
3060 }
3061
3062 if (a->value + a->section->vma < b->value + b->section->vma)
3063 return -1;
3064
3065 if (a->value + a->section->vma > b->value + b->section->vma)
3066 return 1;
3067
4d35a0aa
AM		 3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3071 return -1;
3072
3073 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3074 return 1;
3075
3076 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3077 return -1;
3078
3079 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3080 return 1;
3081
3082 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3083 return -1;
3084
3085 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3086 return 1;
3087
3088 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3089 return -1;
3090
3091 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3092 return 1;
3093
90e3cdf2
JJ		 3094 return 0;
3095}
3096
699733f6 3097/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 3098
699733f6
AM		 3099static asymbol *
3100sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 3101{
699733f6 3102 long mid;
90e3cdf2 3103
699733f6
AM		 3104 if (id == -1)
3105 {
3106 while (lo < hi)
3107 {
3108 mid = (lo + hi) >> 1;
3109 if (syms[mid]->value + syms[mid]->section->vma < value)
3110 lo = mid + 1;
3111 else if (syms[mid]->value + syms[mid]->section->vma > value)
3112 hi = mid;
3113 else
3114 return syms[mid];
3115 }
3116 }
3117 else
3118 {
3119 while (lo < hi)
3120 {
3121 mid = (lo + hi) >> 1;
3122 if (syms[mid]->section->id < id)
3123 lo = mid + 1;
3124 else if (syms[mid]->section->id > id)
3125 hi = mid;
3126 else if (syms[mid]->value < value)
3127 lo = mid + 1;
3128 else if (syms[mid]->value > value)
3129 hi = mid;
3130 else
3131 return syms[mid];
3132 }
3133 }
3134 return NULL;
90e3cdf2
JJ		 3135}
3136
468392fb
AM		 3137static bfd_boolean
3138section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3139{
3140 bfd_vma vma = *(bfd_vma *) ptr;
3141 return ((section->flags & SEC_ALLOC) != 0
3142 && section->vma <= vma
3143 && vma < section->vma + section->size);
3144}
3145
699733f6 3146/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 3147 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ		 3148
3149static long
a7535cf3
AM		 3150ppc64_elf_get_synthetic_symtab (bfd *abfd,
3151 long static_count, asymbol **static_syms,
3152 long dyn_count, asymbol **dyn_syms,
c9727e01 3153 asymbol **ret)
90e3cdf2
JJ		 3154{
3155 asymbol *s;
699733f6
AM		 3156 long i;
3157 long count;
90e3cdf2 3158 char *names;
a7535cf3 3159 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
ee67d69a 3160 asection *opd = NULL;
90e3cdf2 3161 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 3162 asymbol **syms;
ee67d69a 3163 int abi = abiversion (abfd);
90e3cdf2
JJ		 3164
3165 *ret = NULL;
3166
ee67d69a
AM		 3167 if (abi < 2)
3168 {
3169 opd = bfd_get_section_by_name (abfd, ".opd");
3170 if (opd == NULL && abi == 1)
3171 return 0;
3172 }
90e3cdf2 3173
a7535cf3 3174 symcount = static_count;
c9727e01 3175 if (!relocatable)
a7535cf3 3176 symcount += dyn_count;
90e3cdf2 3177 if (symcount == 0)
c9727e01 3178 return 0;
90e3cdf2 3179
a7535cf3
AM		 3180 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3181 if (syms == NULL)
7356fed5 3182 return -1;
a7535cf3
AM		 3183
3184 if (!relocatable && static_count != 0 && dyn_count != 0)
3185 {
3186 /* Use both symbol tables. */
3187 memcpy (syms, static_syms, static_count * sizeof (*syms));
3188 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3189 }
3190 else if (!relocatable && static_count == 0)
3191 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3192 else
3193 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3194
90e3cdf2 3195 synthetic_relocatable = relocatable;
595da8c5 3196 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3197
c9727e01
AM		 3198 if (!relocatable && symcount > 1)
3199 {
3200 long j;
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3203 different values, so trim any with the same value. */
c9727e01
AM		 3204 for (i = 1, j = 1; i < symcount; ++i)
3205 if (syms[i - 1]->value + syms[i - 1]->section->vma
3206 != syms[i]->value + syms[i]->section->vma)
3207 syms[j++] = syms[i];
3208 symcount = j;
3209 }
3210
699733f6 3211 i = 0;
ffcfec52 3212 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM		 3213 ++i;
3214 codesecsym = i;
90e3cdf2 3215
699733f6
AM		 3216 for (; i < symcount; ++i)
3217 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3218 != (SEC_CODE | SEC_ALLOC))
3219 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3220 break;
3221 codesecsymend = i;
90e3cdf2 3222
699733f6
AM		 3223 for (; i < symcount; ++i)
3224 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3225 break;
3226 secsymend = i;
90e3cdf2 3227
699733f6 3228 for (; i < symcount; ++i)
ffcfec52 3229 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM		 3230 break;
3231 opdsymend = i;
90e3cdf2 3232
699733f6
AM		 3233 for (; i < symcount; ++i)
3234 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3235 != (SEC_CODE | SEC_ALLOC))
3236 break;
3237 symcount = i;
3238
c9727e01 3239 count = 0;
90e3cdf2 3240
699733f6 3241 if (relocatable)
90e3cdf2 3242 {
699733f6
AM		 3243 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3244 arelent *r;
3245 size_t size;
3246 long relcount;
90e3cdf2 3247
468392fb
AM		 3248 if (opdsymend == secsymend)
3249 goto done;
3250
699733f6 3251 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3252 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3253 if (relcount == 0)
c9727e01 3254 goto done;
90e3cdf2 3255
7356fed5
AM		 3256 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3257 {
3258 count = -1;
3259 goto done;
3260 }
3261
699733f6 3262 size = 0;
595da8c5 3263 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 3264 {
3265 asymbol *sym;
90e3cdf2 3266
595da8c5 3267 while (r < opd->relocation + relcount
699733f6
AM		 3268 && r->address < syms[i]->value + opd->vma)
3269 ++r;
90e3cdf2 3270
595da8c5 3271 if (r == opd->relocation + relcount)
699733f6 3272 break;
90e3cdf2 3273
699733f6
AM		 3274 if (r->address != syms[i]->value + opd->vma)
3275 continue;
90e3cdf2 3276
699733f6
AM		 3277 if (r->howto->type != R_PPC64_ADDR64)
3278 continue;
90e3cdf2 3279
699733f6
AM		 3280 sym = *r->sym_ptr_ptr;
3281 if (!sym_exists_at (syms, opdsymend, symcount,
3282 sym->section->id, sym->value + r->addend))
3283 {
3284 ++count;
3285 size += sizeof (asymbol);
3286 size += strlen (syms[i]->name) + 2;
3287 }
3288 }
90e3cdf2 3289
699733f6
AM		 3290 s = *ret = bfd_malloc (size);
3291 if (s == NULL)
3292 {
7356fed5 3293 count = -1;
c9727e01 3294 goto done;
699733f6 3295 }
90e3cdf2 3296
699733f6 3297 names = (char *) (s + count);
90e3cdf2 3298
595da8c5 3299 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3300 {
699733f6 3301 asymbol *sym;
90e3cdf2 3302
595da8c5 3303 while (r < opd->relocation + relcount
699733f6
AM		 3304 && r->address < syms[i]->value + opd->vma)
3305 ++r;
90e3cdf2 3306
595da8c5 3307 if (r == opd->relocation + relcount)
699733f6
AM		 3308 break;
3309
3310 if (r->address != syms[i]->value + opd->vma)
3311 continue;
3312
3313 if (r->howto->type != R_PPC64_ADDR64)
3314 continue;
90e3cdf2 3315
699733f6
AM		 3316 sym = *r->sym_ptr_ptr;
3317 if (!sym_exists_at (syms, opdsymend, symcount,
3318 sym->section->id, sym->value + r->addend))
3319 {
3320 size_t len;
3321
3322 *s = *syms[i];
6ba2a415 3323 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3324 s->section = sym->section;
3325 s->value = sym->value + r->addend;
3326 s->name = names;
3327 *names++ = '.';
3328 len = strlen (syms[i]->name);
3329 memcpy (names, syms[i]->name, len + 1);
3330 names += len + 1;
6f610d07
UW		 3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s->udata.p = syms[i];
699733f6
AM		 3334 s++;
3335 }
3336 }
3337 }
3338 else
90e3cdf2 3339 {
468392fb 3340 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
ee67d69a 3341 bfd_byte *contents = NULL;
699733f6 3342 size_t size;
468392fb
AM		 3343 long plt_count = 0;
3344 bfd_vma glink_vma = 0, resolv_vma = 0;
3345 asection *dynamic, *glink = NULL, *relplt = NULL;
3346 arelent *p;
90e3cdf2 3347
ee67d69a 3348 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
699733f6 3349 {
ee67d69a 3350 free_contents_and_exit:
699733f6 3351 if (contents)
ee67d69a 3352 free (contents);
7356fed5 3353 count = -1;
c9727e01 3354 goto done;
699733f6 3355 }
90e3cdf2 3356
699733f6
AM		 3357 size = 0;
3358 for (i = secsymend; i < opdsymend; ++i)
3359 {
3360 bfd_vma ent;
90e3cdf2 3361
5ef11c02
AM		 3362 /* Ignore bogus symbols. */
3363 if (syms[i]->value > opd->size - 8)
3364 continue;
3365
699733f6
AM		 3366 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3367 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3368 {
3369 ++count;
3370 size += sizeof (asymbol);
3371 size += strlen (syms[i]->name) + 2;
3372 }
3373 }
90e3cdf2 3374
468392fb 3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3376 if (dyn_count != 0
3377 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3378 {
3379 bfd_byte *dynbuf, *extdyn, *extdynend;
3380 size_t extdynsize;
3381 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3382
3383 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3384 goto free_contents_and_exit;
3385
3386 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3387 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3388
3389 extdyn = dynbuf;
3390 extdynend = extdyn + dynamic->size;
3391 for (; extdyn < extdynend; extdyn += extdynsize)
3392 {
3393 Elf_Internal_Dyn dyn;
3394 (*swap_dyn_in) (abfd, extdyn, &dyn);
3395
3396 if (dyn.d_tag == DT_NULL)
3397 break;
3398
3399 if (dyn.d_tag == DT_PPC64_GLINK)
3400 {
b9e5796b
AM		 3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
468392fb
AM		 3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink = bfd_sections_find_if (abfd, section_covers_vma,
3408 &glink_vma);
3409 break;
3410 }
3411 }
3412
3413 free (dynbuf);
3414 }
3415
3416 if (glink != NULL)
3417 {
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3420 bfd_byte buf[4];
b9e5796b
AM		 3421 unsigned int off = 0;
3422
3423 while (bfd_get_section_contents (abfd, glink, buf,
3424 glink_vma + off - glink->vma, 4))
468392fb
AM		 3425 {
3426 unsigned int insn = bfd_get_32 (abfd, buf);
3427 insn ^= B_DOT;
3428 if ((insn & ~0x3fffffc) == 0)
b9e5796b
AM		 3429 {
3430 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3431 break;
3432 }
3433 off += 4;
3434 if (off > 4)
3435 break;
468392fb
AM		 3436 }
3437
3438 if (resolv_vma)
3439 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3440
066ee829
AM		 3441 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3442 if (relplt != NULL)
3443 {
3444 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3445 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3446 goto free_contents_and_exit;
68ffbac6 3447
066ee829
AM		 3448 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3449 size += plt_count * sizeof (asymbol);
468392fb 3450
066ee829
AM		 3451 p = relplt->relocation;
3452 for (i = 0; i < plt_count; i++, p++)
e054468f
AM		 3453 {
3454 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3455 if (p->addend != 0)
3456 size += sizeof ("+0x") - 1 + 16;
3457 }
066ee829 3458 }
468392fb
AM		 3459 }
3460
699733f6
AM		 3461 s = *ret = bfd_malloc (size);
3462 if (s == NULL)
7356fed5 3463 goto free_contents_and_exit;
90e3cdf2 3464
468392fb 3465 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3466
699733f6 3467 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3468 {
699733f6 3469 bfd_vma ent;
90e3cdf2 3470
5ef11c02
AM		 3471 if (syms[i]->value > opd->size - 8)
3472 continue;
3473
699733f6
AM		 3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3476 {
c9727e01 3477 long lo, hi;
699733f6 3478 size_t len;
c9727e01 3479 asection *sec = abfd->sections;
90e3cdf2 3480
699733f6
AM		 3481 *s = *syms[i];
3482 lo = codesecsym;
3483 hi = codesecsymend;
3484 while (lo < hi)
3485 {
c9727e01 3486 long mid = (lo + hi) >> 1;
699733f6
AM		 3487 if (syms[mid]->section->vma < ent)
3488 lo = mid + 1;
3489 else if (syms[mid]->section->vma > ent)
3490 hi = mid;
3491 else
c9727e01
AM		 3492 {
3493 sec = syms[mid]->section;
3494 break;
3495 }
699733f6
AM		 3496 }
3497
c9727e01 3498 if (lo >= hi && lo > codesecsym)
699733f6 3499 sec = syms[lo - 1]->section;
699733f6
AM		 3500
3501 for (; sec != NULL; sec = sec->next)
3502 {
3503 if (sec->vma > ent)
3504 break;
63524580
JK		 3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3506 info file. */
3507 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM		 3508 break;
3509 if ((sec->flags & SEC_CODE) != 0)
3510 s->section = sec;
3511 }
6ba2a415 3512 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3513 s->value = ent - s->section->vma;
3514 s->name = names;
3515 *names++ = '.';
3516 len = strlen (syms[i]->name);
3517 memcpy (names, syms[i]->name, len + 1);
3518 names += len + 1;
6f610d07
UW		 3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s->udata.p = syms[i];
699733f6 3522 s++;
90e3cdf2 3523 }
90e3cdf2 3524 }
699733f6 3525 free (contents);
468392fb
AM		 3526
3527 if (glink != NULL && relplt != NULL)
3528 {
3529 if (resolv_vma)
3530 {
3531 /* Add a symbol for the main glink trampoline. */
86a4952b 3532 memset (s, 0, sizeof *s);
468392fb 3533 s->the_bfd = abfd;
6ba2a415 3534 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3535 s->section = glink;
3536 s->value = resolv_vma - glink->vma;
3537 s->name = names;
3538 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names += sizeof ("__glink_PLTresolve");
3540 s++;
3541 count++;
3542 }
3543
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3551
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p = relplt->relocation;
3561 for (i = 0; i < plt_count; i++, p++)
3562 {
3563 size_t len;
3564
3565 *s = **p->sym_ptr_ptr;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s->flags & BSF_LOCAL) == 0)
3569 s->flags |= BSF_GLOBAL;
6ba2a415 3570 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3571 s->section = glink;
3572 s->value = glink_vma - glink->vma;
3573 s->name = names;
3574 s->udata.p = NULL;
3575 len = strlen ((*p->sym_ptr_ptr)->name);
3576 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3577 names += len;
e054468f
AM		 3578 if (p->addend != 0)
3579 {
3580 memcpy (names, "+0x", sizeof ("+0x") - 1);
3581 names += sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd, names, p->addend);
3583 names += strlen (names);
3584 }
468392fb
AM		 3585 memcpy (names, "@plt", sizeof ("@plt"));
3586 names += sizeof ("@plt");
3587 s++;
b9e5796b
AM		 3588 if (abi < 2)
3589 {
3590 glink_vma += 8;
3591 if (i >= 0x8000)
3592 glink_vma += 4;
3593 }
3594 else
468392fb
AM		 3595 glink_vma += 4;
3596 }
3597 count += plt_count;
3598 }
90e3cdf2
JJ		 3599 }
3600
c9727e01 3601 done:
a7535cf3 3602 free (syms);
90e3cdf2
JJ		 3603 return count;
3604}
5bd4f169 3605\f
65f38f15
AM		 3606/* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3612 called.
3613
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3617
3618 . .text
3619 . x:
3620 . bl .foo
3621 . nop
3622
3623 The function definition in another object file might be:
3624
3625 . .section .opd
3626 . foo: .quad .foo
3627 . .quad .TOC.@tocbase
3628 . .quad 0
3629 .
3630 . .text
3631 . .foo: blr
3632
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3638
3639 . x:
3640 . bl .foo_stub
3641 . ld 2,40(1)
3642 .
3643 .
3644 . .foo_stub:
71a39c98
AM		 3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3648 . ld 12,0(11)
3649 . ld 2,8(11)
3650 . mtctr 12
3651 . ld 11,16(11)
e86ce104
AM		 3652 . bctr
3653 .
3654 . .section .plt
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3656
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3659 copying.
3660
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3672 definition from some other object, eg. a static library.
3673
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
65f38f15 3677
1d483afe 3678/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
65f38f15 3681
1d483afe
AM		 3682static int
3683must_be_dyn_reloc (struct bfd_link_info *info,
3684 enum elf_ppc64_reloc_type r_type)
3685{
3686 switch (r_type)
3687 {
3688 default:
3689 return 1;
3690
3691 case R_PPC64_REL32:
3692 case R_PPC64_REL64:
3693 case R_PPC64_REL30:
3694 return 0;
3695
3696 case R_PPC64_TPREL16:
3697 case R_PPC64_TPREL16_LO:
3698 case R_PPC64_TPREL16_HI:
3699 case R_PPC64_TPREL16_HA:
3700 case R_PPC64_TPREL16_DS:
3701 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 3702 case R_PPC64_TPREL16_HIGH:
3703 case R_PPC64_TPREL16_HIGHA:
1d483afe
AM		 3704 case R_PPC64_TPREL16_HIGHER:
3705 case R_PPC64_TPREL16_HIGHERA:
3706 case R_PPC64_TPREL16_HIGHEST:
3707 case R_PPC64_TPREL16_HIGHESTA:
3708 case R_PPC64_TPREL64:
3709 return !info->executable;
3710 }
3711}
65f38f15 3712
f4656909
AM		 3713/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3724 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
a23b6845 3728#define ELIMINATE_COPY_RELOCS 1
f4656909 3729
721956f4 3730/* Section name for stubs is the associated section name plus this
29942be8
NC		 3731 string. */
3732#define STUB_SUFFIX ".stub"
721956f4
AM		 3733
3734/* Linker stubs.
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3738 . b dest
3739
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
71a39c98
AM		 3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3745 . mtctr %r12
721956f4
AM		 3746 . bctr
3747
3748 ppc_stub_plt_call:
2c66dc6c
AM		 3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
71a39c98 3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
721956f4 3752 . std %r2,40(%r1)
71a39c98
AM		 3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3755 . mtctr %r12
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
721956f4 3758 . bctr
ad8e1ba5
AM		 3759
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3763 . std %r2,40(%r1)
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3766 . b dest
3767
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3769 . std %r2,40(%r1)
71a39c98
AM		 3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
ad8e1ba5
AM		 3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
71a39c98 3774 . mtctr %r12
ad8e1ba5 3775 . bctr
ac2df442
AM		 3776
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3779*/
3780
3781enum ppc_stub_type {
3782 ppc_stub_none,
3783 ppc_stub_long_branch,
ad8e1ba5 3784 ppc_stub_long_branch_r2off,
721956f4 3785 ppc_stub_plt_branch,
ad8e1ba5 3786 ppc_stub_plt_branch_r2off,
794e51c0 3787 ppc_stub_plt_call,
7341d5e2
AM		 3788 ppc_stub_plt_call_r2save,
3789 ppc_stub_global_entry
721956f4
AM		 3790};
3791
3792struct ppc_stub_hash_entry {
3793
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root;
3796
ad8e1ba5
AM		 3797 enum ppc_stub_type stub_type;
3798
721956f4
AM		 3799 /* The stub section. */
3800 asection *stub_sec;
3801
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset;
3804
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value;
3808 asection *target_section;
3809
721956f4
AM		 3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry *h;
e054468f 3812 struct plt_entry *plt_ent;
721956f4
AM		 3813
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3816 asection *id_sec;
6911b7dc
AM		 3817
3818 /* Symbol st_other. */
3819 unsigned char other;
721956f4
AM		 3820};
3821
3822struct ppc_branch_hash_entry {
3823
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root;
3826
c456f082 3827 /* Offset within branch lookup table. */
721956f4
AM		 3828 unsigned int offset;
3829
3830 /* Generation marker. */
3831 unsigned int iter;
3832};
65f38f15 3833
19e08130
AM		 3834/* Used to track dynamic relocations for local symbols. */
3835struct ppc_dyn_relocs
3836{
3837 struct ppc_dyn_relocs *next;
3838
3839 /* The input section of the reloc. */
3840 asection *sec;
3841
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count : 31;
3844
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc : 1;
3847};
3848
65f38f15
AM		 3849struct ppc_link_hash_entry
3850{
3851 struct elf_link_hash_entry elf;
3852
b3fac117
AM		 3853 union {
3854 /* A pointer to the most recently used stub hash entry against this
3855 symbol. */
3856 struct ppc_stub_hash_entry *stub_cache;
3857
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry *next_dot_sym;
3860 } u;
721956f4 3861
65f38f15 3862 /* Track dynamic relocs copied for this symbol. */
6061a67d 3863 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3864
721956f4 3865 /* Link between function code and descriptor symbols. */
34814b9f 3866 struct ppc_link_hash_entry *oh;
721956f4 3867
e86ce104
AM		 3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func:1;
3870 unsigned int is_func_descriptor:1;
908b32fc 3871 unsigned int fake:1;
411e1bfb 3872
c5614fa4
AM		 3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3876 unsigned int adjust_done:1;
3877
99877b66
AM		 3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined:1;
3880
411e1bfb 3881 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889#define TLS_GD 1 /* GD reloc. */
3890#define TLS_LD 2 /* LD reloc. */
3891#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893#define TLS_TLS 16 /* Any TLS reloc. */
3894#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3896#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3897 unsigned char tls_mask;
65f38f15
AM		 3898};
3899
3900/* ppc64 ELF linker hash table. */
3901
3902struct ppc_link_hash_table
3903{
3904 struct elf_link_hash_table elf;
3905
721956f4
AM		 3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table;
3908
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table;
3911
3b421ab3
AM		 3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab;
3914
e7d1c40c
AM		 3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params *params;
721956f4
AM		 3917
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3920 struct map_stub {
3921 /* This is the section to which stubs in the group will be attached. */
3922 asection *link_sec;
3923 /* The stub section. */
3924 asection *stub_sec;
ad8e1ba5
AM		 3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3926 bfd_vma toc_off;
721956f4
AM		 3927 } *stub_group;
3928
ad8e1ba5
AM		 3929 /* Temp used when calculating TOC pointers. */
3930 bfd_vma toc_curr;
bf102f86
AM		 3931 bfd *toc_bfd;
3932 asection *toc_first_sec;
ad8e1ba5 3933
8f3bab57
AM		 3934 /* Highest input section id. */
3935 int top_id;
3936
734b6cf9
AM		 3937 /* Highest output section index. */
3938 int top_index;
3939
b3fac117
AM		 3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry *dot_syms;
3942
734b6cf9
AM		 3943 /* List of input sections for each output section. */
3944 asection **input_list;
721956f4 3945
33e44f2e 3946 /* Shortcuts to get to dynamic linker sections. */
4ce794b7
AM		 3947 asection *dynbss;
3948 asection *relbss;
3949 asection *glink;
82bd7b59 3950 asection *sfpr;
4ce794b7
AM		 3951 asection *brlt;
3952 asection *relbrlt;
58d180e8 3953 asection *glink_eh_frame;
ec338859 3954
8387904d
AM		 3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry *tls_get_addr;
3957 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3958
927be08e
AM		 3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size;
3961
9b5ecbd0 3962 /* Statistics. */
7341d5e2 3963 unsigned long stub_count[ppc_stub_global_entry];
9b5ecbd0 3964
ee75fd95
AM		 3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals;
3967
ee67d69a
AM		 3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi:1;
3970
4c52953f 3971 /* Support for multiple toc sections. */
33c0ec9d 3972 unsigned int do_multi_toc:1;
4c52953f 3973 unsigned int multi_toc_needed:1;
927be08e 3974 unsigned int second_toc_pass:1;
67f0cbdb 3975 unsigned int do_toc_opt:1;
4c52953f 3976
5d1634d7 3977 /* Set on error. */
99877b66 3978 unsigned int stub_error:1;
721956f4 3979
f6c7c3e8 3980 /* Temp used by ppc64_elf_before_check_relocs. */
99877b66 3981 unsigned int twiddled_syms:1;
721956f4
AM		 3982
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration;
5d1634d7 3985
87d72d41
AM		 3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache;
65f38f15
AM		 3988};
3989
4c52953f
AM		 3990/* Rename some of the generic section flags to better document how they
3991 are used here. */
b0dddeec
AM		 3992
3993/* Nonzero if this section has TLS related relocations. */
3994#define has_tls_reloc sec_flg0
3995
3996/* Nonzero if this section has a call to __tls_get_addr. */
3997#define has_tls_get_addr_call sec_flg1
3998
3999/* Nonzero if this section has any toc or got relocs. */
4000#define has_toc_reloc sec_flg2
4001
4002/* Nonzero if this section has a call to another section that uses
4003 the toc or got. */
d77c8a4b 4004#define makes_toc_func_call sec_flg3
b0dddeec
AM		 4005
4006/* Recursion protection when determining above flag. */
d77c8a4b 4007#define call_check_in_progress sec_flg4
70cc837d 4008#define call_check_done sec_flg5
4c52953f 4009
65f38f15
AM		 4010/* Get the ppc64 ELF linker hash table from a link_info structure. */
4011
4012#define ppc_hash_table(p) \
4dfe6ac6
NC		 4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 4015
721956f4
AM		 4016#define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4019
4020#define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4023
4024/* Create an entry in the stub hash table. */
4025
4026static struct bfd_hash_entry *
4ce794b7
AM		 4027stub_hash_newfunc (struct bfd_hash_entry *entry,
4028 struct bfd_hash_table *table,
4029 const char *string)
721956f4
AM		 4030{
4031 /* Allocate the structure if it has not already been allocated by a
4032 subclass. */
4033 if (entry == NULL)
4034 {
4035 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4036 if (entry == NULL)
4037 return entry;
4038 }
4039
4040 /* Call the allocation method of the superclass. */
4041 entry = bfd_hash_newfunc (entry, table, string);
4042 if (entry != NULL)
4043 {
4044 struct ppc_stub_hash_entry *eh;
4045
4046 /* Initialize the local fields. */
4047 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 4048 eh->stub_type = ppc_stub_none;
721956f4
AM		 4049 eh->stub_sec = NULL;
4050 eh->stub_offset = 0;
4051 eh->target_value = 0;
4052 eh->target_section = NULL;
721956f4 4053 eh->h = NULL;
6911b7dc 4054 eh->plt_ent = NULL;
721956f4 4055 eh->id_sec = NULL;
6911b7dc 4056 eh->other = 0;
721956f4
AM		 4057 }
4058
4059 return entry;
4060}
4061
4062/* Create an entry in the branch hash table. */
4063
4064static struct bfd_hash_entry *
4ce794b7
AM		 4065branch_hash_newfunc (struct bfd_hash_entry *entry,
4066 struct bfd_hash_table *table,
4067 const char *string)
721956f4
AM		 4068{
4069 /* Allocate the structure if it has not already been allocated by a
4070 subclass. */
4071 if (entry == NULL)
4072 {
4073 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4074 if (entry == NULL)
4075 return entry;
4076 }
4077
4078 /* Call the allocation method of the superclass. */
4079 entry = bfd_hash_newfunc (entry, table, string);
4080 if (entry != NULL)
4081 {
4082 struct ppc_branch_hash_entry *eh;
4083
4084 /* Initialize the local fields. */
4085 eh = (struct ppc_branch_hash_entry *) entry;
4086 eh->offset = 0;
4087 eh->iter = 0;
4088 }
4089
4090 return entry;
4091}
4092
65f38f15
AM		 4093/* Create an entry in a ppc64 ELF linker hash table. */
4094
4095static struct bfd_hash_entry *
4ce794b7
AM		 4096link_hash_newfunc (struct bfd_hash_entry *entry,
4097 struct bfd_hash_table *table,
4098 const char *string)
65f38f15
AM		 4099{
4100 /* Allocate the structure if it has not already been allocated by a
4101 subclass. */
4102 if (entry == NULL)
4103 {
4104 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4105 if (entry == NULL)
4106 return entry;
4107 }
4108
4109 /* Call the allocation method of the superclass. */
4110 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4111 if (entry != NULL)
4112 {
4113 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4114
b3fac117 4115 memset (&eh->u.stub_cache, 0,
908b32fc 4116 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 4117 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4118
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4123
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4126 "bar" too).
4127 A new object defines "foo" and references "bar".
4128
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4132
4133 Keep a list of newly added dot-symbols. */
4134
4135 if (string[0] == '.')
4136 {
4137 struct ppc_link_hash_table *htab;
4138
4139 htab = (struct ppc_link_hash_table *) table;
4140 eh->u.next_dot_sym = htab->dot_syms;
4141 htab->dot_syms = eh;
4142 }
65f38f15
AM		 4143 }
4144
4145 return entry;
4146}
4147
3b421ab3
AM		 4148struct tocsave_entry {
4149 asection *sec;
4150 bfd_vma offset;
4151};
4152
4153static hashval_t
4154tocsave_htab_hash (const void *p)
4155{
4156 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4157 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4158}
4159
4160static int
4161tocsave_htab_eq (const void *p1, const void *p2)
4162{
4163 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4164 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4165 return e1->sec == e2->sec && e1->offset == e2->offset;
4166}
4167
68faa637
AM		 4168/* Destroy a ppc64 ELF linker hash table. */
4169
4170static void
d495ab0d 4171ppc64_elf_link_hash_table_free (bfd *obfd)
68faa637 4172{
d495ab0d 4173 struct ppc_link_hash_table *htab;
68faa637 4174
d495ab0d 4175 htab = (struct ppc_link_hash_table *) obfd->link.hash;
68faa637
AM		 4176 if (htab->tocsave_htab)
4177 htab_delete (htab->tocsave_htab);
d495ab0d
AM		 4178 bfd_hash_table_free (&htab->branch_hash_table);
4179 bfd_hash_table_free (&htab->stub_hash_table);
4180 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 4181}
4182
65f38f15
AM		 4183/* Create a ppc64 ELF linker hash table. */
4184
4185static struct bfd_link_hash_table *
4ce794b7 4186ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 4187{
4188 struct ppc_link_hash_table *htab;
4189 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4190
4ce794b7 4191 htab = bfd_zmalloc (amt);
65f38f15
AM		 4192 if (htab == NULL)
4193 return NULL;
4194
66eb6687 4195 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 4196 sizeof (struct ppc_link_hash_entry),
4197 PPC64_ELF_DATA))
65f38f15 4198 {
e2d34d7d 4199 free (htab);
65f38f15
AM		 4200 return NULL;
4201 }
4202
721956f4 4203 /* Init the stub hash table too. */
66eb6687
AM		 4204 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4205 sizeof (struct ppc_stub_hash_entry)))
2915c55b 4206 {
d495ab0d 4207 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4208 return NULL;
4209 }
721956f4
AM		 4210
4211 /* And the branch hash table. */
66eb6687
AM		 4212 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4213 sizeof (struct ppc_branch_hash_entry)))
2915c55b
JK		 4214 {
4215 bfd_hash_table_free (&htab->stub_hash_table);
d495ab0d 4216 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4217 return NULL;
4218 }
721956f4 4219
3b421ab3
AM		 4220 htab->tocsave_htab = htab_try_create (1024,
4221 tocsave_htab_hash,
4222 tocsave_htab_eq,
4223 NULL);
4224 if (htab->tocsave_htab == NULL)
2915c55b 4225 {
d495ab0d 4226 ppc64_elf_link_hash_table_free (abfd);
2915c55b
JK		 4227 return NULL;
4228 }
d495ab0d 4229 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
3b421ab3 4230
3254fd24
AM		 4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
a6aa5195
AM		 4235 htab->elf.init_got_refcount.refcount = 0;
4236 htab->elf.init_got_refcount.glist = NULL;
4237 htab->elf.init_plt_refcount.refcount = 0;
4238 htab->elf.init_plt_refcount.glist = NULL;
4239 htab->elf.init_got_offset.offset = 0;
4240 htab->elf.init_got_offset.glist = NULL;
4241 htab->elf.init_plt_offset.offset = 0;
4242 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4243
65f38f15
AM		 4244 return &htab->elf.root;
4245}
4246
bfeb4a28
AM		 4247/* Create sections for linker generated code. */
4248
4249static bfd_boolean
4250create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4251{
4252 struct ppc_link_hash_table *htab;
4253 flagword flags;
4254
4255 htab = ppc_hash_table (info);
4256
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4261 flags);
4262 if (htab->sfpr == NULL
4263 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4264 return FALSE;
4265
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4268 flags);
4269 if (htab->glink == NULL
4270 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4271 return FALSE;
4272
4273 if (!info->no_ld_generated_unwind_info)
4274 {
4275 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4277 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4278 ".eh_frame",
4279 flags);
4280 if (htab->glink_eh_frame == NULL
4281 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4282 return FALSE;
4283 }
4284
4285 flags = SEC_ALLOC | SEC_LINKER_CREATED;
33e44f2e
AM		 4286 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4287 if (htab->elf.iplt == NULL
4288 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
bfeb4a28
AM		 4289 return FALSE;
4290
4291 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4292 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
33e44f2e
AM		 4293 htab->elf.irelplt
4294 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4295 if (htab->elf.irelplt == NULL
4296 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
bfeb4a28
AM		 4297 return FALSE;
4298
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags = (SEC_ALLOC | SEC_LOAD
4301 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4302 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4303 flags);
4304 if (htab->brlt == NULL
4305 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4306 return FALSE;
4307
4308 if (!info->shared)
4309 return TRUE;
4310
4311 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4312 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4313 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4314 ".rela.branch_lt",
4315 flags);
4316 if (htab->relbrlt == NULL
4317 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4318 return FALSE;
4319
4320 return TRUE;
4321}
4322
e717da7e
AM		 4323/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4324
bfeb4a28 4325bfd_boolean
e7d1c40c
AM		 4326ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4327 struct ppc64_elf_params *params)
e717da7e
AM		 4328{
4329 struct ppc_link_hash_table *htab;
4330
e7d1c40c 4331 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
e717da7e
AM		 4332
4333/* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab = ppc_hash_table (info);
4dfe6ac6 4337 if (htab == NULL)
bfeb4a28 4338 return FALSE;
e7d1c40c
AM		 4339 htab->elf.dynobj = params->stub_bfd;
4340 htab->params = params;
bfeb4a28
AM		 4341
4342 if (info->relocatable)
4343 return TRUE;
4344
4345 return create_linkage_sections (htab->elf.dynobj, info);
e717da7e
AM		 4346}
4347
721956f4
AM		 4348/* Build a name for an entry in the stub hash table. */
4349
4350static char *
4ce794b7
AM		 4351ppc_stub_name (const asection *input_section,
4352 const asection *sym_sec,
4353 const struct ppc_link_hash_entry *h,
4354 const Elf_Internal_Rela *rel)
721956f4
AM		 4355{
4356 char *stub_name;
bcaa2f82 4357 ssize_t len;
721956f4
AM		 4358
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4363
4364 if (h)
4365 {
4366 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4367 stub_name = bfd_malloc (len);
46de2a7c
AM		 4368 if (stub_name == NULL)
4369 return stub_name;
4370
bcaa2f82
AM		 4371 len = sprintf (stub_name, "%08x.%s+%x",
4372 input_section->id & 0xffffffff,
4373 h->elf.root.root.string,
4374 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 4375 }
4376 else
4377 {
ad8e1ba5 4378 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4379 stub_name = bfd_malloc (len);
46de2a7c
AM		 4380 if (stub_name == NULL)
4381 return stub_name;
4382
bcaa2f82
AM		 4383 len = sprintf (stub_name, "%08x.%x:%x+%x",
4384 input_section->id & 0xffffffff,
4385 sym_sec->id & 0xffffffff,
4386 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4387 (int) rel->r_addend & 0xffffffff);
721956f4 4388 }
bcaa2f82 4389 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
ee75fd95 4390 stub_name[len - 2] = 0;
721956f4
AM		 4391 return stub_name;
4392}
4393
4394/* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4396
4397static struct ppc_stub_hash_entry *
4ce794b7
AM		 4398ppc_get_stub_entry (const asection *input_section,
4399 const asection *sym_sec,
039b3fef 4400 struct ppc_link_hash_entry *h,
4ce794b7
AM		 4401 const Elf_Internal_Rela *rel,
4402 struct ppc_link_hash_table *htab)
721956f4
AM		 4403{
4404 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 4405 const asection *id_sec;
4406
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec = htab->stub_group[input_section->id].link_sec;
4413
b3fac117
AM		 4414 if (h != NULL && h->u.stub_cache != NULL
4415 && h->u.stub_cache->h == h
4416 && h->u.stub_cache->id_sec == id_sec)
721956f4 4417 {
b3fac117 4418 stub_entry = h->u.stub_cache;
721956f4
AM		 4419 }
4420 else
4421 {
4422 char *stub_name;
4423
4424 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4425 if (stub_name == NULL)
4426 return NULL;
4427
4428 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4429 stub_name, FALSE, FALSE);
721956f4 4430 if (h != NULL)
b3fac117 4431 h->u.stub_cache = stub_entry;
721956f4
AM		 4432
4433 free (stub_name);
4434 }
4435
4436 return stub_entry;
4437}
4438
4439/* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4441
4442static struct ppc_stub_hash_entry *
4ce794b7
AM		 4443ppc_add_stub (const char *stub_name,
4444 asection *section,
25f53a85 4445 struct bfd_link_info *info)
721956f4 4446{
25f53a85 4447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4
AM		 4448 asection *link_sec;
4449 asection *stub_sec;
4450 struct ppc_stub_hash_entry *stub_entry;
4451
4452 link_sec = htab->stub_group[section->id].link_sec;
4453 stub_sec = htab->stub_group[section->id].stub_sec;
4454 if (stub_sec == NULL)
4455 {
4456 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4457 if (stub_sec == NULL)
4458 {
d4c88bbb 4459 size_t namelen;
721956f4
AM		 4460 bfd_size_type len;
4461 char *s_name;
4462
d4c88bbb
AM		 4463 namelen = strlen (link_sec->name);
4464 len = namelen + sizeof (STUB_SUFFIX);
e7d1c40c 4465 s_name = bfd_alloc (htab->params->stub_bfd, len);
721956f4
AM		 4466 if (s_name == NULL)
4467 return NULL;
4468
d4c88bbb
AM		 4469 memcpy (s_name, link_sec->name, namelen);
4470 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
e7d1c40c 4471 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
721956f4
AM		 4472 if (stub_sec == NULL)
4473 return NULL;
4474 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4475 }
4476 htab->stub_group[section->id].stub_sec = stub_sec;
4477 }
4478
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4481 TRUE, FALSE);
721956f4
AM		 4482 if (stub_entry == NULL)
4483 {
8de848d8 4484 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4485 section->owner, stub_name);
721956f4
AM		 4486 return NULL;
4487 }
4488
4489 stub_entry->stub_sec = stub_sec;
4490 stub_entry->stub_offset = 0;
4491 stub_entry->id_sec = link_sec;
4492 return stub_entry;
4493}
4494
e717da7e
AM		 4495/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
65f38f15 4497
b34976b6 4498static bfd_boolean
e717da7e 4499create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4500{
e717da7e
AM		 4501 asection *got, *relgot;
4502 flagword flags;
4503 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4504
0c8d6e5c 4505 if (!is_ppc64_elf (abfd))
0ffa91dd 4506 return FALSE;
4dfe6ac6
NC		 4507 if (htab == NULL)
4508 return FALSE;
0ffa91dd 4509
33e44f2e
AM		 4510 if (!htab->elf.sgot
4511 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4512 return FALSE;
e717da7e
AM		 4513
4514 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED);
4516
c456f082 4517 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4518 if (!got
e717da7e
AM		 4519 || !bfd_set_section_alignment (abfd, got, 3))
4520 return FALSE;
65f38f15 4521
c456f082
AM		 4522 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4523 flags | SEC_READONLY);
e717da7e 4524 if (!relgot
e717da7e 4525 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4526 return FALSE;
e717da7e
AM		 4527
4528 ppc64_elf_tdata (abfd)->got = got;
4529 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4530 return TRUE;
65f38f15 4531}
5bd4f169 4532
82bd7b59 4533/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4534
b34976b6 4535static bfd_boolean
4ce794b7 4536ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4537{
65f38f15 4538 struct ppc_link_hash_table *htab;
5bd4f169 4539
65f38f15 4540 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4541 return FALSE;
65f38f15 4542
e717da7e 4543 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4544 if (htab == NULL)
4545 return FALSE;
4546
3d4d4302 4547 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
65f38f15 4548 if (!info->shared)
3d4d4302 4549 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
65f38f15 4550
33e44f2e 4551 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4ce794b7 4552 || (!info->shared && !htab->relbss))
65f38f15
AM		 4553 abort ();
4554
b34976b6 4555 return TRUE;
5bd4f169
AM		 4556}
4557
b31867b6
AM		 4558/* Follow indirect and warning symbol links. */
4559
4560static inline struct bfd_link_hash_entry *
4561follow_link (struct bfd_link_hash_entry *h)
4562{
4563 while (h->type == bfd_link_hash_indirect
4564 || h->type == bfd_link_hash_warning)
4565 h = h->u.i.link;
4566 return h;
4567}
4568
4569static inline struct elf_link_hash_entry *
4570elf_follow_link (struct elf_link_hash_entry *h)
4571{
4572 return (struct elf_link_hash_entry *) follow_link (&h->root);
4573}
4574
4575static inline struct ppc_link_hash_entry *
4576ppc_follow_link (struct ppc_link_hash_entry *h)
4577{
4578 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4579}
4580
40d16e0b
AM		 4581/* Merge PLT info on FROM with that on TO. */
4582
4583static void
4584move_plt_plist (struct ppc_link_hash_entry *from,
4585 struct ppc_link_hash_entry *to)
4586{
4587 if (from->elf.plt.plist != NULL)
4588 {
4589 if (to->elf.plt.plist != NULL)
4590 {
4591 struct plt_entry **entp;
4592 struct plt_entry *ent;
4593
4594 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4595 {
4596 struct plt_entry *dent;
4597
4598 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4599 if (dent->addend == ent->addend)
4600 {
4601 dent->plt.refcount += ent->plt.refcount;
4602 *entp = ent->next;
4603 break;
4604 }
4605 if (dent == NULL)
4606 entp = &ent->next;
4607 }
4608 *entp = to->elf.plt.plist;
4609 }
4610
4611 to->elf.plt.plist = from->elf.plt.plist;
4612 from->elf.plt.plist = NULL;
4613 }
4614}
4615
65f38f15
AM		 4616/* Copy the extra info we tack onto an elf_link_hash_entry. */
4617
4618static void
fcfa13d2
AM		 4619ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4620 struct elf_link_hash_entry *dir,
4621 struct elf_link_hash_entry *ind)
65f38f15
AM		 4622{
4623 struct ppc_link_hash_entry *edir, *eind;
4624
4625 edir = (struct ppc_link_hash_entry *) dir;
4626 eind = (struct ppc_link_hash_entry *) ind;
4627
c79d6685
AM		 4628 edir->is_func |= eind->is_func;
4629 edir->is_func_descriptor |= eind->is_func_descriptor;
4630 edir->tls_mask |= eind->tls_mask;
4631 if (eind->oh != NULL)
4632 edir->oh = ppc_follow_link (eind->oh);
4633
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind->elf.root.type != bfd_link_hash_indirect
4639 && edir->elf.dynamic_adjusted))
4640 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4641
4642 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4643 edir->elf.ref_regular |= eind->elf.ref_regular;
4644 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4645 edir->elf.needs_plt |= eind->elf.needs_plt;
a345bc8d 4646 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
c79d6685 4647
411e1bfb 4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4649 if (eind->dyn_relocs != NULL)
65f38f15 4650 {
bbd7ec4a
AM		 4651 if (edir->dyn_relocs != NULL)
4652 {
6061a67d
AM		 4653 struct elf_dyn_relocs **pp;
4654 struct elf_dyn_relocs *p;
bbd7ec4a 4655
fcfa13d2 4656 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4657 list. Merge any entries against the same section. */
4658 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4659 {
6061a67d 4660 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 4661
4662 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4663 if (q->sec == p->sec)
4664 {
4665 q->pc_count += p->pc_count;
4666 q->count += p->count;
4667 *pp = p->next;
4668 break;
4669 }
4670 if (q == NULL)
4671 pp = &p->next;
4672 }
4673 *pp = edir->dyn_relocs;
4674 }
4675
65f38f15
AM		 4676 edir->dyn_relocs = eind->dyn_relocs;
4677 eind->dyn_relocs = NULL;
4678 }
65f38f15 4679
68ba6d40
AM		 4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM		 4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4686 DIR sym here. */
4687 if (eind->elf.root.type != bfd_link_hash_indirect)
4688 return;
4689
81848ca0
AM		 4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
411e1bfb
AM		 4692 if (eind->elf.got.glist != NULL)
4693 {
4694 if (edir->elf.got.glist != NULL)
4695 {
4696 struct got_entry **entp;
4697 struct got_entry *ent;
4698
4699 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4700 {
4701 struct got_entry *dent;
4702
4703 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4704 if (dent->addend == ent->addend
e717da7e 4705 && dent->owner == ent->owner
411e1bfb
AM		 4706 && dent->tls_type == ent->tls_type)
4707 {
4708 dent->got.refcount += ent->got.refcount;
4709 *entp = ent->next;
4710 break;
4711 }
4712 if (dent == NULL)
4713 entp = &ent->next;
4714 }
4715 *entp = edir->elf.got.glist;
4716 }
4717
4718 edir->elf.got.glist = eind->elf.got.glist;
4719 eind->elf.got.glist = NULL;
4720 }
4721
4722 /* And plt entries. */
40d16e0b 4723 move_plt_plist (eind, edir);
411e1bfb 4724
fcfa13d2 4725 if (eind->elf.dynindx != -1)
411e1bfb 4726 {
fcfa13d2
AM		 4727 if (edir->elf.dynindx != -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4729 edir->elf.dynstr_index);
411e1bfb
AM		 4730 edir->elf.dynindx = eind->elf.dynindx;
4731 edir->elf.dynstr_index = eind->elf.dynstr_index;
4732 eind->elf.dynindx = -1;
4733 eind->elf.dynstr_index = 0;
4734 }
411e1bfb
AM		 4735}
4736
8387904d
AM		 4737/* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4739
4740static struct ppc_link_hash_entry *
b31867b6 4741lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM		 4742{
4743 struct ppc_link_hash_entry *fdh = fh->oh;
4744
4745 if (fdh == NULL)
4746 {
4747 const char *fd_name = fh->elf.root.root.string + 1;
4748
4749 fdh = (struct ppc_link_hash_entry *)
4750 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM		 4751 if (fdh == NULL)
4752 return fdh;
4753
4754 fdh->is_func_descriptor = 1;
4755 fdh->oh = fh;
4756 fh->is_func = 1;
4757 fh->oh = fdh;
8387904d
AM		 4758 }
4759
b31867b6 4760 return ppc_follow_link (fdh);
8387904d
AM		 4761}
4762
bb700d78
AM		 4763/* Make a fake function descriptor sym for the code sym FH. */
4764
4765static struct ppc_link_hash_entry *
4766make_fdh (struct bfd_link_info *info,
908b32fc 4767 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4768{
4769 bfd *abfd;
4770 asymbol *newsym;
4771 struct bfd_link_hash_entry *bh;
4772 struct ppc_link_hash_entry *fdh;
4773
4774 abfd = fh->elf.root.u.undef.abfd;
4775 newsym = bfd_make_empty_symbol (abfd);
4776 newsym->name = fh->elf.root.root.string + 1;
4777 newsym->section = bfd_und_section_ptr;
4778 newsym->value = 0;
908b32fc 4779 newsym->flags = BSF_WEAK;
bb700d78
AM		 4780
4781 bh = NULL;
4782 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4783 newsym->flags, newsym->section,
4784 newsym->value, NULL, FALSE, FALSE,
4785 &bh))
4786 return NULL;
4787
4788 fdh = (struct ppc_link_hash_entry *) bh;
4789 fdh->elf.non_elf = 0;
908b32fc
AM		 4790 fdh->fake = 1;
4791 fdh->is_func_descriptor = 1;
4792 fdh->oh = fh;
4793 fh->is_func = 1;
4794 fh->oh = fdh;
bb700d78
AM		 4795 return fdh;
4796}
4797
8387904d
AM		 4798/* Fix function descriptor symbols defined in .opd sections to be
4799 function type. */
555cd476
AM		 4800
4801static bfd_boolean
c16153ae 4802ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4803 struct bfd_link_info *info,
555cd476 4804 Elf_Internal_Sym *isym,
6911b7dc 4805 const char **name,
555cd476
AM		 4806 flagword *flags ATTRIBUTE_UNUSED,
4807 asection **sec,
4808 bfd_vma *value ATTRIBUTE_UNUSED)
4809{
f64b2e8d
NC		 4810 if ((ibfd->flags & DYNAMIC) == 0
4811 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4813
e054468f 4814 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c16153ae
L		 4815 {
4816 if ((ibfd->flags & DYNAMIC) == 0)
f64b2e8d 4817 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
c16153ae 4818 }
e054468f
AM		 4819 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4820 ;
4821 else if (*sec != NULL
70cc837d 4822 && strcmp ((*sec)->name, ".opd") == 0)
555cd476 4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4824
6911b7dc
AM		 4825 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4826 {
4827 if (abiversion (ibfd) == 0)
4828 set_abiversion (ibfd, 2);
4829 else if (abiversion (ibfd) == 1)
4830 {
4831 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4832 " for ABI version 1\n"), name);
4833 bfd_set_error (bfd_error_bad_value);
4834 return FALSE;
4835 }
4836 }
4837
555cd476
AM		 4838 return TRUE;
4839}
4840
6911b7dc
AM		 4841/* Merge non-visibility st_other attributes: local entry point. */
4842
4843static void
4844ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4845 const Elf_Internal_Sym *isym,
4846 bfd_boolean definition,
4847 bfd_boolean dynamic)
4848{
4849 if (definition && !dynamic)
4850 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4851 | ELF_ST_VISIBILITY (h->other));
4852}
4853
8387904d 4854/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4855 inclusion of a new ABI object archive that defines "bar".
4856 NAME is a symbol defined in an archive. Return a symbol in the hash
4857 table that might be satisfied by the archive symbols. */
8387904d
AM		 4858
4859static struct elf_link_hash_entry *
4860ppc64_elf_archive_symbol_lookup (bfd *abfd,
4861 struct bfd_link_info *info,
4862 const char *name)
4863{
4864 struct elf_link_hash_entry *h;
4865 char *dot_name;
4866 size_t len;
4867
4868 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4869 if (h != NULL
4870 /* Don't return this sym if it is a fake function descriptor
4871 created by add_symbol_adjust. */
4872 && !(h->root.type == bfd_link_hash_undefweak
4873 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4874 return h;
4875
4876 if (name[0] == '.')
4877 return h;
4878
4879 len = strlen (name);
4880 dot_name = bfd_alloc (abfd, len + 2);
4881 if (dot_name == NULL)
4882 return (struct elf_link_hash_entry *) 0 - 1;
4883 dot_name[0] = '.';
4884 memcpy (dot_name + 1, name, len + 1);
4885 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4886 bfd_release (abfd, dot_name);
4887 return h;
4888}
4889
4890/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4891 new ABI object defines "bar". Well, at least, undefined dot symbols
4892 are made weak. This stops later archive searches from including an
4893 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4894 prevents the linker complaining about undefined symbols.
4895 We also check and correct mismatched symbol visibility here. The
4896 most restrictive visibility of the function descriptor and the
4897 function entry symbol is used. */
8387904d
AM		 4898
4899static bfd_boolean
b3fac117 4900add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4901{
8387904d
AM		 4902 struct ppc_link_hash_table *htab;
4903 struct ppc_link_hash_entry *fdh;
4904
b3fac117 4905 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4906 return TRUE;
4907
b3fac117
AM		 4908 if (eh->elf.root.type == bfd_link_hash_warning)
4909 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4910
b3fac117
AM		 4911 if (eh->elf.root.root.string[0] != '.')
4912 abort ();
8387904d 4913
b3fac117 4914 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4915 if (htab == NULL)
4916 return FALSE;
4917
b31867b6
AM		 4918 fdh = lookup_fdh (eh, htab);
4919 if (fdh == NULL)
4920 {
4921 if (!info->relocatable
4922 && (eh->elf.root.type == bfd_link_hash_undefined
4923 || eh->elf.root.type == bfd_link_hash_undefweak)
4924 && eh->elf.ref_regular)
4925 {
4926 /* Make an undefweak function descriptor sym, which is enough to
4927 pull in an --as-needed shared lib, but won't cause link
4928 errors. Archives are handled elsewhere. */
4929 fdh = make_fdh (info, eh);
4930 if (fdh == NULL)
4931 return FALSE;
4932 fdh->elf.ref_regular = 1;
4933 }
bb700d78 4934 }
b31867b6 4935 else
8387904d 4936 {
35b0ce59
AM		 4937 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4938 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4939 if (entry_vis < descr_vis)
4940 fdh->elf.other += entry_vis - descr_vis;
4941 else if (entry_vis > descr_vis)
4942 eh->elf.other += descr_vis - entry_vis;
4943
e87d886e
AM		 4944 if ((fdh->elf.root.type == bfd_link_hash_defined
4945 || fdh->elf.root.type == bfd_link_hash_defweak)
4946 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4947 {
4948 eh->elf.root.type = bfd_link_hash_undefweak;
4949 eh->was_undefined = 1;
4950 htab->twiddled_syms = 1;
4951 }
8387904d 4952 }
99877b66 4953
8387904d
AM		 4954 return TRUE;
4955}
4956
f6c7c3e8
AM		 4957/* Set up opd section info and abiversion for IBFD, and process list
4958 of dot-symbols we made in link_hash_newfunc. */
b3fac117 4959
8387904d 4960static bfd_boolean
f6c7c3e8 4961ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 4962{
99877b66 4963 struct ppc_link_hash_table *htab;
b3fac117 4964 struct ppc_link_hash_entry **p, *eh;
433817dd 4965
0c8d6e5c 4966 if (!is_ppc64_elf (info->output_bfd))
35b0ce59 4967 return TRUE;
4dfe6ac6
NC		 4968 htab = ppc_hash_table (info);
4969 if (htab == NULL)
4970 return FALSE;
35b0ce59 4971
0c8d6e5c 4972 if (is_ppc64_elf (ibfd))
b3fac117 4973 {
f6c7c3e8
AM		 4974 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4975
4976 if (opd != NULL && opd->size != 0)
4977 {
4978 if (abiversion (ibfd) == 0)
4979 set_abiversion (ibfd, 1);
4980 else if (abiversion (ibfd) == 2)
4981 {
4982 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4983 " version %d\n"),
4984 ibfd, abiversion (ibfd));
4985 bfd_set_error (bfd_error_bad_value);
4986 return FALSE;
4987 }
4988
4989 if ((ibfd->flags & DYNAMIC) == 0
4990 && (opd->flags & SEC_RELOC) != 0
4991 && opd->reloc_count != 0
4992 && !bfd_is_abs_section (opd->output_section))
4993 {
4994 /* Garbage collection needs some extra help with .opd sections.
4995 We don't want to necessarily keep everything referenced by
4996 relocs in .opd, as that would keep all functions. Instead,
4997 if we reference an .opd symbol (a function descriptor), we
4998 want to keep the function code symbol's section. This is
4999 easy for global symbols, but for local syms we need to keep
5000 information about the associated function section. */
5001 bfd_size_type amt;
5002 asection **opd_sym_map;
5003
5004 amt = opd->size * sizeof (*opd_sym_map) / 8;
5005 opd_sym_map = bfd_zalloc (ibfd, amt);
5006 if (opd_sym_map == NULL)
5007 return FALSE;
5008 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5009 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5010 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5011 }
5012 }
5013
5014 /* For input files without an explicit abiversion in e_flags
5015 we should have flagged any with symbol st_other bits set
5016 as ELFv1 and above flagged those with .opd as ELFv2.
5017 Set the output abiversion if not yet set, and for any input
5018 still ambiguous, take its abiversion from the output.
5019 Differences in ABI are reported later. */
5020 if (abiversion (info->output_bfd) == 0)
5021 set_abiversion (info->output_bfd, abiversion (ibfd));
5022 else if (abiversion (ibfd) == 0)
5023 set_abiversion (ibfd, abiversion (info->output_bfd));
5024
b3fac117
AM		 5025 p = &htab->dot_syms;
5026 while ((eh = *p) != NULL)
5027 {
5028 *p = NULL;
1c865ab2
AM		 5029 if (&eh->elf == htab->elf.hgot)
5030 ;
5031 else if (htab->elf.hgot == NULL
5032 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5033 htab->elf.hgot = &eh->elf;
5034 else if (!add_symbol_adjust (eh, info))
b3fac117
AM		 5035 return FALSE;
5036 p = &eh->u.next_dot_sym;
5037 }
5038 }
5039
5040 /* Clear the list for non-ppc64 input files. */
5041 p = &htab->dot_syms;
5042 while ((eh = *p) != NULL)
5043 {
5044 *p = NULL;
5045 p = &eh->u.next_dot_sym;
5046 }
99877b66
AM		 5047
5048 /* We need to fix the undefs list for any syms we have twiddled to
5049 undef_weak. */
5050 if (htab->twiddled_syms)
5051 {
77cfaee6 5052 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5053 htab->twiddled_syms = 0;
5054 }
b3fac117 5055 return TRUE;
8387904d
AM		 5056}
5057
97fed1c9
JJ		 5058/* Undo hash table changes when an --as-needed input file is determined
5059 not to be needed. */
5060
5061static bfd_boolean
e5034e59
AM		 5062ppc64_elf_notice_as_needed (bfd *ibfd,
5063 struct bfd_link_info *info,
5064 enum notice_asneeded_action act)
97fed1c9 5065{
e5034e59
AM		 5066 if (act == notice_not_needed)
5067 {
5068 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5069
e5034e59
AM		 5070 if (htab == NULL)
5071 return FALSE;
4dfe6ac6 5072
e5034e59
AM		 5073 htab->dot_syms = NULL;
5074 }
5075 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5076}
5077
aa374f67
AM		 5078/* If --just-symbols against a final linked binary, then assume we need
5079 toc adjusting stubs when calling functions defined there. */
5080
5081static void
5082ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5083{
5084 if ((sec->flags & SEC_CODE) != 0
5085 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5086 && is_ppc64_elf (sec->owner))
5087 {
2c3f079f
AM		 5088 if (abiversion (sec->owner) >= 2
5089 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5090 sec->has_toc_reloc = 1;
5091 }
5092 _bfd_elf_link_just_syms (sec, info);
5093}
5094
e054468f 5095static struct plt_entry **
4ce794b7
AM		 5096update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5097 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5098{
5099 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5100 struct plt_entry **local_plt;
f961d9dd 5101 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5102
5103 if (local_got_ents == NULL)
5104 {
5105 bfd_size_type size = symtab_hdr->sh_info;
5106
e054468f
AM		 5107 size *= (sizeof (*local_got_ents)
5108 + sizeof (*local_plt)
5109 + sizeof (*local_got_tls_masks));
4ce794b7 5110 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5111 if (local_got_ents == NULL)
e054468f 5112 return NULL;
411e1bfb
AM		 5113 elf_local_got_ents (abfd) = local_got_ents;
5114 }
5115
e054468f 5116 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5117 {
5118 struct got_entry *ent;
5119
5120 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5121 if (ent->addend == r_addend
5122 && ent->owner == abfd
5123 && ent->tls_type == tls_type)
411e1bfb
AM		 5124 break;
5125 if (ent == NULL)
5126 {
5127 bfd_size_type amt = sizeof (*ent);
4ce794b7 5128 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5129 if (ent == NULL)
5130 return FALSE;
5131 ent->next = local_got_ents[r_symndx];
5132 ent->addend = r_addend;
e717da7e 5133 ent->owner = abfd;
411e1bfb 5134 ent->tls_type = tls_type;
927be08e 5135 ent->is_indirect = FALSE;
411e1bfb
AM		 5136 ent->got.refcount = 0;
5137 local_got_ents[r_symndx] = ent;
5138 }
5139 ent->got.refcount += 1;
5140 }
5141
e054468f 5142 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5143 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5144 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5145
5146 return local_plt + r_symndx;
65f38f15
AM		 5147}
5148
411e1bfb 5149static bfd_boolean
e054468f 5150update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5151{
411e1bfb 5152 struct plt_entry *ent;
1e2f5b6e 5153
e054468f 5154 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5155 if (ent->addend == addend)
5156 break;
5157 if (ent == NULL)
1e2f5b6e 5158 {
411e1bfb 5159 bfd_size_type amt = sizeof (*ent);
4ce794b7 5160 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5161 if (ent == NULL)
5162 return FALSE;
e054468f 5163 ent->next = *plist;
411e1bfb
AM		 5164 ent->addend = addend;
5165 ent->plt.refcount = 0;
e054468f 5166 *plist = ent;
1e2f5b6e 5167 }
411e1bfb 5168 ent->plt.refcount += 1;
b34976b6 5169 return TRUE;
1e2f5b6e
AM		 5170}
5171
e054468f
AM		 5172static bfd_boolean
5173is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5174{
5175 return (r_type == R_PPC64_REL24
5176 || r_type == R_PPC64_REL14
5177 || r_type == R_PPC64_REL14_BRTAKEN
5178 || r_type == R_PPC64_REL14_BRNTAKEN
5179 || r_type == R_PPC64_ADDR24
5180 || r_type == R_PPC64_ADDR14
5181 || r_type == R_PPC64_ADDR14_BRTAKEN
5182 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5183}
5184
5bd4f169 5185/* Look through the relocs for a section during the first phase, and
65f38f15 5186 calculate needed space in the global offset table, procedure
5d1634d7 5187 linkage table, and dynamic reloc sections. */
5bd4f169 5188
b34976b6 5189static bfd_boolean
4ce794b7
AM		 5190ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5191 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5192{
65f38f15 5193 struct ppc_link_hash_table *htab;
5bd4f169 5194 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5195 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5196 const Elf_Internal_Rela *rel;
5197 const Elf_Internal_Rela *rel_end;
5bd4f169 5198 asection *sreloc;
1e2f5b6e 5199 asection **opd_sym_map;
3a71aa26 5200 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5201
1049f94e 5202 if (info->relocatable)
b34976b6 5203 return TRUE;
5bd4f169 5204
680a3378
AM		 5205 /* Don't do anything special with non-loaded, non-alloced sections.
5206 In particular, any relocs in such sections should not affect GOT
5207 and PLT reference counting (ie. we don't allow them to create GOT
5208 or PLT entries), there's no possibility or desire to optimize TLS
5209 relocs, and there's not much point in propagating relocs to shared
5210 libs that the dynamic linker won't relocate. */
5211 if ((sec->flags & SEC_ALLOC) == 0)
5212 return TRUE;
5213
0c8d6e5c 5214 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5215
65f38f15 5216 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5217 if (htab == NULL)
5218 return FALSE;
5219
3a71aa26
AM		 5220 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5221 FALSE, FALSE, TRUE);
5222 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5223 FALSE, FALSE, TRUE);
0ffa91dd 5224 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5225 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5226 sreloc = NULL;
1e2f5b6e 5227 opd_sym_map = NULL;
f6c7c3e8
AM		 5228 if (ppc64_elf_section_data (sec) != NULL
5229 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5230 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5231
5232 rel_end = relocs + sec->reloc_count;
5233 for (rel = relocs; rel < rel_end; rel++)
5234 {
5235 unsigned long r_symndx;
5236 struct elf_link_hash_entry *h;
04c9666a 5237 enum elf_ppc64_reloc_type r_type;
727fc41e 5238 int tls_type;
7c8fe5c4 5239 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 5240 struct plt_entry **ifunc;
5bd4f169
AM		 5241
5242 r_symndx = ELF64_R_SYM (rel->r_info);
5243 if (r_symndx < symtab_hdr->sh_info)
5244 h = NULL;
5245 else
973a3492
L		 5246 {
5247 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5248 h = elf_follow_link (h);
81fbe831
AM		 5249
5250 /* PR15323, ref flags aren't set for references in the same
5251 object. */
5252 h->root.non_ir_ref = 1;
1c865ab2
AM		 5253
5254 if (h == htab->elf.hgot)
5255 sec->has_toc_reloc = 1;
973a3492 5256 }
5bd4f169 5257
727fc41e 5258 tls_type = 0;
e054468f 5259 ifunc = NULL;
25f23106
AM		 5260 if (h != NULL)
5261 {
5262 if (h->type == STT_GNU_IFUNC)
5263 {
5264 h->needs_plt = 1;
5265 ifunc = &h->plt.plist;
5266 }
5267 }
5268 else
5269 {
5270 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5271 abfd, r_symndx);
5272 if (isym == NULL)
5273 return FALSE;
5274
5275 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5276 {
5277 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5278 rel->r_addend, PLT_IFUNC);
5279 if (ifunc == NULL)
5280 return FALSE;
5281 }
5282 }
4ce794b7 5283 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM		 5284 if (is_branch_reloc (r_type))
5285 {
5286 if (h != NULL && (h == tga || h == dottga))
5287 {
5288 if (rel != relocs
5289 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5290 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5291 /* We have a new-style __tls_get_addr call with a marker
5292 reloc. */
5293 ;
5294 else
5295 /* Mark this section as having an old-style call. */
5296 sec->has_tls_get_addr_call = 1;
5297 }
727fc41e 5298
e054468f 5299 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM		 5300 if (ifunc != NULL
5301 && !update_plt_info (abfd, ifunc, rel->r_addend))
5302 return FALSE;
5303 }
727fc41e 5304
a33d1f77 5305 switch (r_type)
5bd4f169 5306 {
727fc41e
AM		 5307 case R_PPC64_TLSGD:
5308 case R_PPC64_TLSLD:
5309 /* These special tls relocs tie a call to __tls_get_addr with
5310 its parameter symbol. */
5311 break;
5312
411e1bfb
AM		 5313 case R_PPC64_GOT_TLSLD16:
5314 case R_PPC64_GOT_TLSLD16_LO:
5315 case R_PPC64_GOT_TLSLD16_HI:
5316 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5317 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5318 goto dogottls;
5319
5320 case R_PPC64_GOT_TLSGD16:
5321 case R_PPC64_GOT_TLSGD16_LO:
5322 case R_PPC64_GOT_TLSGD16_HI:
5323 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5324 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5325 goto dogottls;
5326
5327 case R_PPC64_GOT_TPREL16_DS:
5328 case R_PPC64_GOT_TPREL16_LO_DS:
5329 case R_PPC64_GOT_TPREL16_HI:
5330 case R_PPC64_GOT_TPREL16_HA:
afb93314 5331 if (info->shared)
411e1bfb
AM		 5332 info->flags |= DF_STATIC_TLS;
5333 tls_type = TLS_TLS | TLS_TPREL;
5334 goto dogottls;
5335
5336 case R_PPC64_GOT_DTPREL16_DS:
5337 case R_PPC64_GOT_DTPREL16_LO_DS:
5338 case R_PPC64_GOT_DTPREL16_HI:
5339 case R_PPC64_GOT_DTPREL16_HA:
5340 tls_type = TLS_TLS | TLS_DTPREL;
5341 dogottls:
5342 sec->has_tls_reloc = 1;
5343 /* Fall thru */
5344
5bd4f169 5345 case R_PPC64_GOT16:
5bd4f169 5346 case R_PPC64_GOT16_DS:
65f38f15
AM		 5347 case R_PPC64_GOT16_HA:
5348 case R_PPC64_GOT16_HI:
5349 case R_PPC64_GOT16_LO:
5bd4f169 5350 case R_PPC64_GOT16_LO_DS:
65f38f15 5351 /* This symbol requires a global offset table entry. */
4c52953f 5352 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5353 if (r_type == R_PPC64_GOT_TLSLD16
5354 || r_type == R_PPC64_GOT_TLSGD16
5355 || r_type == R_PPC64_GOT_TPREL16_DS
5356 || r_type == R_PPC64_GOT_DTPREL16_DS
5357 || r_type == R_PPC64_GOT16
5358 || r_type == R_PPC64_GOT16_DS)
5359 {
5360 htab->do_multi_toc = 1;
d77c8a4b 5361 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5362 }
5363
e717da7e
AM		 5364 if (ppc64_elf_tdata (abfd)->got == NULL
5365 && !create_got_section (abfd, info))
b34976b6 5366 return FALSE;
5bd4f169
AM		 5367
5368 if (h != NULL)
5369 {
411e1bfb
AM		 5370 struct ppc_link_hash_entry *eh;
5371 struct got_entry *ent;
65f38f15 5372
411e1bfb
AM		 5373 eh = (struct ppc_link_hash_entry *) h;
5374 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5375 if (ent->addend == rel->r_addend
e717da7e 5376 && ent->owner == abfd
411e1bfb
AM		 5377 && ent->tls_type == tls_type)
5378 break;
5379 if (ent == NULL)
5bd4f169 5380 {
411e1bfb 5381 bfd_size_type amt = sizeof (*ent);
4ce794b7 5382 ent = bfd_alloc (abfd, amt);
411e1bfb 5383 if (ent == NULL)
b34976b6 5384 return FALSE;
411e1bfb
AM		 5385 ent->next = eh->elf.got.glist;
5386 ent->addend = rel->r_addend;
e717da7e 5387 ent->owner = abfd;
411e1bfb 5388 ent->tls_type = tls_type;
927be08e 5389 ent->is_indirect = FALSE;
411e1bfb
AM		 5390 ent->got.refcount = 0;
5391 eh->elf.got.glist = ent;
5bd4f169 5392 }
411e1bfb 5393 ent->got.refcount += 1;
e7b938ca 5394 eh->tls_mask |= tls_type;
5bd4f169 5395 }
411e1bfb
AM		 5396 else
5397 /* This is a global offset table entry for a local symbol. */
5398 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5399 rel->r_addend, tls_type))
5400 return FALSE;
a345bc8d
AM		 5401
5402 /* We may also need a plt entry if the symbol turns out to be
5403 an ifunc. */
f6c7c3e8 5404 if (h != NULL && !info->shared && abiversion (abfd) != 1)
a345bc8d
AM		 5405 {
5406 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5407 return FALSE;
5408 }
5bd4f169
AM		 5409 break;
5410
5bd4f169 5411 case R_PPC64_PLT16_HA:
65f38f15
AM		 5412 case R_PPC64_PLT16_HI:
5413 case R_PPC64_PLT16_LO:
5414 case R_PPC64_PLT32:
5415 case R_PPC64_PLT64:
5bd4f169 5416 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 5417 actually build the entry in adjust_dynamic_symbol,
5418 because this might be a case of linking PIC code without
5419 linking in any dynamic objects, in which case we don't
5420 need to generate a procedure linkage table after all. */
5bd4f169
AM		 5421 if (h == NULL)
5422 {
5423 /* It does not make sense to have a procedure linkage
3fad3c7c 5424 table entry for a local symbol. */
5bd4f169 5425 bfd_set_error (bfd_error_bad_value);
b34976b6 5426 return FALSE;
5bd4f169 5427 }
411e1bfb 5428 else
e054468f
AM		 5429 {
5430 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5431 return FALSE;
5432 h->needs_plt = 1;
5433 if (h->root.root.string[0] == '.'
5434 && h->root.root.string[1] != '\0')
5435 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5436 }
5bd4f169
AM		 5437 break;
5438
5439 /* The following relocations don't need to propagate the
5440 relocation if linking a shared object since they are
5441 section relative. */
5442 case R_PPC64_SECTOFF:
5443 case R_PPC64_SECTOFF_LO:
5444 case R_PPC64_SECTOFF_HI:
5445 case R_PPC64_SECTOFF_HA:
5446 case R_PPC64_SECTOFF_DS:
5447 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5448 case R_PPC64_DTPREL16:
5449 case R_PPC64_DTPREL16_LO:
5450 case R_PPC64_DTPREL16_HI:
5451 case R_PPC64_DTPREL16_HA:
5452 case R_PPC64_DTPREL16_DS:
5453 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5454 case R_PPC64_DTPREL16_HIGH:
5455 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5456 case R_PPC64_DTPREL16_HIGHER:
5457 case R_PPC64_DTPREL16_HIGHERA:
5458 case R_PPC64_DTPREL16_HIGHEST:
5459 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5460 break;
5461
ad8e1ba5 5462 /* Nor do these. */
25f23106
AM		 5463 case R_PPC64_REL16:
5464 case R_PPC64_REL16_LO:
5465 case R_PPC64_REL16_HI:
5466 case R_PPC64_REL16_HA:
5467 break;
5468
45965137
AM		 5469 /* Not supported as a dynamic relocation. */
5470 case R_PPC64_ADDR64_LOCAL:
5471 if (info->shared)
5472 {
5473 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5474 ppc_howto_init ();
5475 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5476 "in shared libraries and PIEs.\n"),
5477 abfd, sec, rel->r_offset,
5478 ppc64_elf_howto_table[r_type]->name);
5479 bfd_set_error (bfd_error_bad_value);
5480 return FALSE;
5481 }
5482 break;
5483
ad8e1ba5 5484 case R_PPC64_TOC16:
33c0ec9d
AM		 5485 case R_PPC64_TOC16_DS:
5486 htab->do_multi_toc = 1;
d77c8a4b 5487 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM		 5488 case R_PPC64_TOC16_LO:
5489 case R_PPC64_TOC16_HI:
5490 case R_PPC64_TOC16_HA:
ad8e1ba5 5491 case R_PPC64_TOC16_LO_DS:
4c52953f 5492 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5493 break;
5494
5bd4f169
AM		 5495 /* This relocation describes the C++ object vtable hierarchy.
5496 Reconstruct it for later use during GC. */
5497 case R_PPC64_GNU_VTINHERIT:
c152c796 5498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5499 return FALSE;
5bd4f169
AM		 5500 break;
5501
5502 /* This relocation describes which C++ vtable entries are actually
5503 used. Record for later use during GC. */
5504 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5505 BFD_ASSERT (h != NULL);
5506 if (h != NULL
5507 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5508 return FALSE;
5bd4f169
AM		 5509 break;
5510
721956f4
AM		 5511 case R_PPC64_REL14:
5512 case R_PPC64_REL14_BRTAKEN:
5513 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5514 {
5515 asection *dest = NULL;
5516
5517 /* Heuristic: If jumping outside our section, chances are
5518 we are going to need a stub. */
5519 if (h != NULL)
5520 {
5521 /* If the sym is weak it may be overridden later, so
5522 don't assume we know where a weak sym lives. */
5523 if (h->root.type == bfd_link_hash_defined)
5524 dest = h->root.u.def.section;
5525 }
5526 else
87d72d41
AM		 5527 {
5528 Elf_Internal_Sym *isym;
5529
5530 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5531 abfd, r_symndx);
5532 if (isym == NULL)
5533 return FALSE;
5534
5535 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5536 }
5537
220c76dd 5538 if (dest != sec)
7c8fe5c4 5539 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5540 }
721956f4
AM		 5541 /* Fall through. */
5542
5d1634d7 5543 case R_PPC64_REL24:
e054468f 5544 if (h != NULL && ifunc == NULL)
5d1634d7
AM		 5545 {
5546 /* We may need a .plt entry if the function this reloc
5547 refers to is in a shared lib. */
e054468f 5548 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5549 return FALSE;
e054468f
AM		 5550 h->needs_plt = 1;
5551 if (h->root.root.string[0] == '.'
5552 && h->root.root.string[1] != '\0')
5553 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5554 if (h == tga || h == dottga)
411e1bfb 5555 sec->has_tls_reloc = 1;
411e1bfb
AM		 5556 }
5557 break;
5558
5559 case R_PPC64_TPREL64:
5560 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
afb93314 5561 if (info->shared)
411e1bfb
AM		 5562 info->flags |= DF_STATIC_TLS;
5563 goto dotlstoc;
5564
5565 case R_PPC64_DTPMOD64:
5566 if (rel + 1 < rel_end
5567 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5568 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5569 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5570 else
951fd09b 5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5572 goto dotlstoc;
5573
5574 case R_PPC64_DTPREL64:
5575 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5576 if (rel != relocs
5577 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5578 && rel[-1].r_offset == rel->r_offset - 8)
5579 /* This is the second reloc of a dtpmod, dtprel pair.
5580 Don't mark with TLS_DTPREL. */
5581 goto dodyn;
5582
5583 dotlstoc:
5584 sec->has_tls_reloc = 1;
5585 if (h != NULL)
5586 {
5587 struct ppc_link_hash_entry *eh;
5588 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5589 eh->tls_mask |= tls_type;
411e1bfb
AM		 5590 }
5591 else
5592 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5593 rel->r_addend, tls_type))
5594 return FALSE;
5595
7c8fe5c4
AM		 5596 ppc64_sec = ppc64_elf_section_data (sec);
5597 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5598 {
3a71aa26
AM		 5599 bfd_size_type amt;
5600
e7b938ca 5601 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5602 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5603 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5604 if (ppc64_sec->u.toc.symndx == NULL)
5605 return FALSE;
5606 amt = sec->size * sizeof (bfd_vma) / 8;
5607 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5608 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5609 return FALSE;
7c8fe5c4
AM		 5610 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5611 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5612 }
5613 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5614 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5615 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5616
5617 /* Mark the second slot of a GD or LD entry.
5618 -1 to indicate GD and -2 to indicate LD. */
5619 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5620 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5621 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5622 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5623 goto dodyn;
5624
5625 case R_PPC64_TPREL16:
5626 case R_PPC64_TPREL16_LO:
5627 case R_PPC64_TPREL16_HI:
5628 case R_PPC64_TPREL16_HA:
5629 case R_PPC64_TPREL16_DS:
5630 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5631 case R_PPC64_TPREL16_HIGH:
5632 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5633 case R_PPC64_TPREL16_HIGHER:
5634 case R_PPC64_TPREL16_HIGHERA:
5635 case R_PPC64_TPREL16_HIGHEST:
5636 case R_PPC64_TPREL16_HIGHESTA:
5637 if (info->shared)
5638 {
afb93314 5639 info->flags |= DF_STATIC_TLS;
411e1bfb 5640 goto dodyn;
5d1634d7
AM		 5641 }
5642 break;
5643
e86ce104 5644 case R_PPC64_ADDR64:
1e2f5b6e 5645 if (opd_sym_map != NULL
1e2f5b6e 5646 && rel + 1 < rel_end
4ce794b7 5647 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5648 {
8387904d
AM		 5649 if (h != NULL)
5650 {
5651 if (h->root.root.string[0] == '.'
5652 && h->root.root.string[1] != 0
b31867b6 5653 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5654 ;
5655 else
5656 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5657 }
5658 else
5659 {
5660 asection *s;
87d72d41 5661 Elf_Internal_Sym *isym;
1e2f5b6e 5662
87d72d41
AM		 5663 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5664 abfd, r_symndx);
5665 if (isym == NULL)
8387904d 5666 return FALSE;
87d72d41
AM		 5667
5668 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5669 if (s != NULL && s != sec)
3f764659 5670 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5671 }
1e2f5b6e 5672 }
e86ce104
AM		 5673 /* Fall through. */
5674
65f38f15
AM		 5675 case R_PPC64_ADDR16:
5676 case R_PPC64_ADDR16_DS:
5677 case R_PPC64_ADDR16_HA:
5678 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5679 case R_PPC64_ADDR16_HIGH:
5680 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5681 case R_PPC64_ADDR16_HIGHER:
5682 case R_PPC64_ADDR16_HIGHERA:
5683 case R_PPC64_ADDR16_HIGHEST:
5684 case R_PPC64_ADDR16_HIGHESTA:
5685 case R_PPC64_ADDR16_LO:
5686 case R_PPC64_ADDR16_LO_DS:
f6c7c3e8 5687 if (h != NULL && !info->shared && abiversion (abfd) != 1
a345bc8d
AM		 5688 && rel->r_addend == 0)
5689 {
5690 /* We may need a .plt entry if this reloc refers to a
5691 function in a shared lib. */
5692 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5693 return FALSE;
5694 h->pointer_equality_needed = 1;
5695 }
5696 /* Fall through. */
5697
5698 case R_PPC64_REL30:
5699 case R_PPC64_REL32:
5700 case R_PPC64_REL64:
5701 case R_PPC64_ADDR14:
5702 case R_PPC64_ADDR14_BRNTAKEN:
5703 case R_PPC64_ADDR14_BRTAKEN:
65f38f15 5704 case R_PPC64_ADDR24:
65f38f15 5705 case R_PPC64_ADDR32:
65f38f15
AM		 5706 case R_PPC64_UADDR16:
5707 case R_PPC64_UADDR32:
5708 case R_PPC64_UADDR64:
5bd4f169 5709 case R_PPC64_TOC:
81848ca0
AM		 5710 if (h != NULL && !info->shared)
5711 /* We may need a copy reloc. */
f5385ebf 5712 h->non_got_ref = 1;
81848ca0 5713
41bd81ab 5714 /* Don't propagate .opd relocs. */
1e2f5b6e 5715 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5716 break;
e86ce104 5717
65f38f15
AM		 5718 /* If we are creating a shared library, and this is a reloc
5719 against a global symbol, or a non PC relative reloc
5720 against a local symbol, then we need to copy the reloc
5721 into the shared library. However, if we are linking with
5722 -Bsymbolic, we do not need to copy a reloc against a
5723 global symbol which is defined in an object we are
5724 including in the link (i.e., DEF_REGULAR is set). At
5725 this point we have not seen all the input files, so it is
5726 possible that DEF_REGULAR is not set now but will be set
5727 later (it is never cleared). In case of a weak definition,
5728 DEF_REGULAR may be cleared later by a strong definition in
5729 a shared library. We account for that possibility below by
f4656909 5730 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5731 table entry. A similar situation occurs when creating
5732 shared libraries and symbol visibility changes render the
5733 symbol local.
5734
5735 If on the other hand, we are creating an executable, we
5736 may need to keep relocations for symbols satisfied by a
5737 dynamic library if we manage to avoid copy relocs for the
5738 symbol. */
411e1bfb 5739 dodyn:
65f38f15 5740 if ((info->shared
1d483afe 5741 && (must_be_dyn_reloc (info, r_type)
65f38f15 5742 || (h != NULL
198f1157 5743 && (!SYMBOLIC_BIND (info, h)
65f38f15 5744 || h->root.type == bfd_link_hash_defweak
f5385ebf 5745 || !h->def_regular))))
f4656909
AM		 5746 || (ELIMINATE_COPY_RELOCS
5747 && !info->shared
65f38f15
AM		 5748 && h != NULL
5749 && (h->root.type == bfd_link_hash_defweak
25f23106
AM		 5750 || !h->def_regular))
5751 || (!info->shared
5752 && ifunc != NULL))
5bd4f169 5753 {
65f38f15
AM		 5754 /* We must copy these reloc types into the output file.
5755 Create a reloc section in dynobj and make room for
5756 this reloc. */
5bd4f169
AM		 5757 if (sreloc == NULL)
5758 {
83bac4b0
NC		 5759 sreloc = _bfd_elf_make_dynamic_reloc_section
5760 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5761
5bd4f169 5762 if (sreloc == NULL)
83bac4b0 5763 return FALSE;
5bd4f169
AM		 5764 }
5765
65f38f15
AM		 5766 /* If this is a global symbol, we count the number of
5767 relocations we need for this symbol. */
5768 if (h != NULL)
5769 {
19e08130
AM		 5770 struct elf_dyn_relocs *p;
5771 struct elf_dyn_relocs **head;
5772
ec338859 5773 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5774 p = *head;
5775 if (p == NULL || p->sec != sec)
5776 {
5777 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5778 if (p == NULL)
5779 return FALSE;
5780 p->next = *head;
5781 *head = p;
5782 p->sec = sec;
5783 p->count = 0;
5784 p->pc_count = 0;
5785 }
5786 p->count += 1;
5787 if (!must_be_dyn_reloc (info, r_type))
5788 p->pc_count += 1;
65f38f15
AM		 5789 }
5790 else
5791 {
ec338859
AM		 5792 /* Track dynamic relocs needed for local syms too.
5793 We really need local syms available to do this
5794 easily. Oh well. */
19e08130
AM		 5795 struct ppc_dyn_relocs *p;
5796 struct ppc_dyn_relocs **head;
5797 bfd_boolean is_ifunc;
ec338859 5798 asection *s;
6edfbbad 5799 void *vpp;
87d72d41 5800 Elf_Internal_Sym *isym;
6edfbbad 5801
87d72d41
AM		 5802 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5803 abfd, r_symndx);
5804 if (isym == NULL)
b34976b6 5805 return FALSE;
ec338859 5806
87d72d41
AM		 5807 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5808 if (s == NULL)
5809 s = sec;
5810
6edfbbad 5811 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5812 head = (struct ppc_dyn_relocs **) vpp;
5813 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5814 p = *head;
5815 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5816 p = p->next;
5817 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5818 {
5819 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5820 if (p == NULL)
5821 return FALSE;
5822 p->next = *head;
5823 *head = p;
5824 p->sec = sec;
5825 p->ifunc = is_ifunc;
5826 p->count = 0;
5827 }
5828 p->count += 1;
ec338859 5829 }
65f38f15 5830 }
5bd4f169 5831 break;
65f38f15
AM		 5832
5833 default:
96e0dda4 5834 break;
5bd4f169
AM		 5835 }
5836 }
5837
b34976b6 5838 return TRUE;
5bd4f169
AM		 5839}
5840
ee67d69a
AM		 5841/* Merge backend specific data from an object file to the output
5842 object file when linking. */
5843
5844static bfd_boolean
5845ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5846{
5847 unsigned long iflags, oflags;
5848
5849 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5850 return TRUE;
5851
5852 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5853 return TRUE;
5854
5855 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5856 return FALSE;
5857
5858 iflags = elf_elfheader (ibfd)->e_flags;
5859 oflags = elf_elfheader (obfd)->e_flags;
5860
f6c7c3e8 5861 if (iflags & ~EF_PPC64_ABI)
ee67d69a
AM		 5862 {
5863 (*_bfd_error_handler)
5864 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5865 bfd_set_error (bfd_error_bad_value);
5866 return FALSE;
5867 }
f6c7c3e8 5868 else if (iflags != oflags && iflags != 0)
ee67d69a
AM		 5869 {
5870 (*_bfd_error_handler)
5871 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5872 ibfd, iflags, oflags);
5873 bfd_set_error (bfd_error_bad_value);
5874 return FALSE;
5875 }
5876
5877 /* Merge Tag_compatibility attributes and any common GNU ones. */
5878 _bfd_elf_merge_object_attributes (ibfd, obfd);
5879
5880 return TRUE;
5881}
5882
5883static bfd_boolean
5884ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5885{
5886 /* Print normal ELF private data. */
5887 _bfd_elf_print_private_bfd_data (abfd, ptr);
5888
5889 if (elf_elfheader (abfd)->e_flags != 0)
5890 {
5891 FILE *file = ptr;
5892
5893 /* xgettext:c-format */
5894 fprintf (file, _("private flags = 0x%lx:"),
5895 elf_elfheader (abfd)->e_flags);
5896
5897 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5898 fprintf (file, _(" [abiv%ld]"),
5899 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5900 fputc ('\n', file);
5901 }
5902
5903 return TRUE;
5904}
5905
8387904d
AM		 5906/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5907 of the code entry point, and its section. */
5908
5909static bfd_vma
5910opd_entry_value (asection *opd_sec,
5911 bfd_vma offset,
5912 asection **code_sec,
aef36ac1
AM		 5913 bfd_vma *code_off,
5914 bfd_boolean in_code_sec)
8387904d
AM		 5915{
5916 bfd *opd_bfd = opd_sec->owner;
8860955f 5917 Elf_Internal_Rela *relocs;
8387904d 5918 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5919 bfd_vma val;
8387904d 5920
9f296da3
AM		 5921 /* No relocs implies we are linking a --just-symbols object, or looking
5922 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 5923 if (opd_sec->reloc_count == 0)
5924 {
729eabd5 5925 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 5926
729eabd5
AM		 5927 if (contents == NULL)
5928 {
5929 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5930 return (bfd_vma) -1;
5931 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5932 }
ee1e4ede 5933
729eabd5 5934 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 5935 if (code_sec != NULL)
5936 {
5937 asection *sec, *likely = NULL;
ee1e4ede 5938
aef36ac1 5939 if (in_code_sec)
4b85d634 5940 {
aef36ac1
AM		 5941 sec = *code_sec;
5942 if (sec->vma <= val
5943 && val < sec->vma + sec->size)
5944 likely = sec;
5945 else
5946 val = -1;
5947 }
5948 else
5949 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5950 if (sec->vma <= val
5951 && (sec->flags & SEC_LOAD) != 0
5952 && (sec->flags & SEC_ALLOC) != 0)
5953 likely = sec;
5954 if (likely != NULL)
5955 {
5956 *code_sec = likely;
5957 if (code_off != NULL)
5958 *code_off = val - likely->vma;
4b85d634
AM		 5959 }
5960 }
aef36ac1 5961 return val;
4b85d634
AM		 5962 }
5963
0c8d6e5c 5964 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5965
729eabd5 5966 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 5967 if (relocs == NULL)
5968 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5969
8387904d 5970 /* Go find the opd reloc at the sym address. */
8860955f 5971 lo = relocs;
8387904d
AM		 5972 BFD_ASSERT (lo != NULL);
5973 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5974 val = (bfd_vma) -1;
8387904d
AM		 5975 while (lo < hi)
5976 {
5977 look = lo + (hi - lo) / 2;
5978 if (look->r_offset < offset)
5979 lo = look + 1;
5980 else if (look->r_offset > offset)
5981 hi = look;
5982 else
5983 {
0ffa91dd
NC		 5984 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5985
8387904d
AM		 5986 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5987 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5988 {
5989 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5990 asection *sec;
5991
62599110
AM		 5992 if (symndx < symtab_hdr->sh_info
5993 || elf_sym_hashes (opd_bfd) == NULL)
8387904d
AM		 5994 {
5995 Elf_Internal_Sym *sym;
5996
5997 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5998 if (sym == NULL)
5999 {
62599110
AM		 6000 size_t symcnt = symtab_hdr->sh_info;
6001 if (elf_sym_hashes (opd_bfd) == NULL)
6002 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
6003 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
8387904d
AM		 6004 0, NULL, NULL, NULL);
6005 if (sym == NULL)
645ea6a9 6006 break;
8387904d
AM		 6007 symtab_hdr->contents = (bfd_byte *) sym;
6008 }
6009
6010 sym += symndx;
6011 val = sym->st_value;
cb33740c 6012 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM		 6013 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6014 }
6015 else
6016 {
6017 struct elf_link_hash_entry **sym_hashes;
6018 struct elf_link_hash_entry *rh;
6019
6020 sym_hashes = elf_sym_hashes (opd_bfd);
6021 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6022 if (rh != NULL)
6023 {
6024 rh = elf_follow_link (rh);
6025 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6026 || rh->root.type == bfd_link_hash_defweak);
6027 val = rh->root.u.def.value;
6028 sec = rh->root.u.def.section;
6029 }
6030 else
6031 {
6032 /* Handle the odd case where we can be called
6033 during bfd_elf_link_add_symbols before the
6034 symbol hashes have been fully populated. */
6035 Elf_Internal_Sym *sym;
6036
6037 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6038 symndx, NULL, NULL, NULL);
6039 if (sym == NULL)
6040 break;
6041
6042 val = sym->st_value;
6043 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6044 free (sym);
6045 }
8387904d
AM		 6046 }
6047 val += look->r_addend;
6048 if (code_off != NULL)
6049 *code_off = val;
6050 if (code_sec != NULL)
aef36ac1
AM		 6051 {
6052 if (in_code_sec && *code_sec != sec)
6053 return -1;
6054 else
6055 *code_sec = sec;
6056 }
8387904d
AM		 6057 if (sec != NULL && sec->output_section != NULL)
6058 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6059 }
6060 break;
6061 }
6062 }
645ea6a9 6063
645ea6a9 6064 return val;
8387904d
AM		 6065}
6066
aef36ac1
AM		 6067/* If the ELF symbol SYM might be a function in SEC, return the
6068 function size and set *CODE_OFF to the function's entry point,
6069 otherwise return zero. */
9f296da3 6070
aef36ac1
AM		 6071static bfd_size_type
6072ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6073 bfd_vma *code_off)
9f296da3 6074{
aef36ac1
AM		 6075 bfd_size_type size;
6076
6077 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6078 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6079 return 0;
6080
6081 size = 0;
6082 if (!(sym->flags & BSF_SYNTHETIC))
6083 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6084
6085 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6086 {
aef36ac1
AM		 6087 if (opd_entry_value (sym->section, sym->value,
6088 &sec, code_off, TRUE) == (bfd_vma) -1)
6089 return 0;
6090 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6091 symbol. This size has nothing to do with the code size of the
6092 function, which is what we're supposed to return, but the
6093 code size isn't available without looking up the dot-sym.
6094 However, doing that would be a waste of time particularly
6095 since elf_find_function will look at the dot-sym anyway.
6096 Now, elf_find_function will keep the largest size of any
6097 function sym found at the code address of interest, so return
6098 1 here to avoid it incorrectly caching a larger function size
6099 for a small function. This does mean we return the wrong
6100 size for a new-ABI function of size 24, but all that does is
6101 disable caching for such functions. */
6102 if (size == 24)
6103 size = 1;
9f296da3 6104 }
aef36ac1
AM		 6105 else
6106 {
6107 if (sym->section != sec)
6108 return 0;
6109 *code_off = sym->value;
6110 }
6111 if (size == 0)
6112 size = 1;
6113 return size;
9f296da3
AM		 6114}
6115
854b41e7
AM		 6116/* Return true if symbol is defined in a regular object file. */
6117
6118static bfd_boolean
6119is_static_defined (struct elf_link_hash_entry *h)
6120{
6121 return ((h->root.type == bfd_link_hash_defined
6122 || h->root.type == bfd_link_hash_defweak)
6123 && h->root.u.def.section != NULL
6124 && h->root.u.def.section->output_section != NULL);
6125}
6126
b31867b6
AM		 6127/* If FDH is a function descriptor symbol, return the associated code
6128 entry symbol if it is defined. Return NULL otherwise. */
6129
6130static struct ppc_link_hash_entry *
6131defined_code_entry (struct ppc_link_hash_entry *fdh)
6132{
6133 if (fdh->is_func_descriptor)
6134 {
6135 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6136 if (fh->elf.root.type == bfd_link_hash_defined
6137 || fh->elf.root.type == bfd_link_hash_defweak)
6138 return fh;
6139 }
6140 return NULL;
6141}
6142
6143/* If FH is a function code entry symbol, return the associated
6144 function descriptor symbol if it is defined. Return NULL otherwise. */
6145
6146static struct ppc_link_hash_entry *
6147defined_func_desc (struct ppc_link_hash_entry *fh)
6148{
6149 if (fh->oh != NULL
6150 && fh->oh->is_func_descriptor)
6151 {
6152 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6153 if (fdh->elf.root.type == bfd_link_hash_defined
6154 || fdh->elf.root.type == bfd_link_hash_defweak)
6155 return fdh;
6156 }
6157 return NULL;
6158}
6159
74f0fb50
AM		 6160/* Mark all our entry sym sections, both opd and code section. */
6161
6162static void
6163ppc64_elf_gc_keep (struct bfd_link_info *info)
6164{
6165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6166 struct bfd_sym_chain *sym;
6167
4dfe6ac6
NC		 6168 if (htab == NULL)
6169 return;
6170
74f0fb50
AM		 6171 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6172 {
b31867b6 6173 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6174 asection *sec;
6175
6176 eh = (struct ppc_link_hash_entry *)
b31867b6 6177 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6178 if (eh == NULL)
6179 continue;
6180 if (eh->elf.root.type != bfd_link_hash_defined
6181 && eh->elf.root.type != bfd_link_hash_defweak)
6182 continue;
6183
b31867b6
AM		 6184 fh = defined_code_entry (eh);
6185 if (fh != NULL)
74f0fb50 6186 {
b31867b6 6187 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6188 sec->flags |= SEC_KEEP;
6189 }
6190 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6191 && opd_entry_value (eh->elf.root.u.def.section,
6192 eh->elf.root.u.def.value,
aef36ac1 6193 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6194 sec->flags |= SEC_KEEP;
6195
6196 sec = eh->elf.root.u.def.section;
6197 sec->flags |= SEC_KEEP;
6198 }
6199}
6200
64d03ab5
AM		 6201/* Mark sections containing dynamically referenced symbols. When
6202 building shared libraries, we must assume that any visible symbol is
6203 referenced. */
6204
6205static bfd_boolean
6206ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6207{
6208 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6209 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6210 struct ppc_link_hash_entry *fdh;
b407645f 6211 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6212
64d03ab5 6213 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6214 fdh = defined_func_desc (eh);
6215 if (fdh != NULL)
6216 eh = fdh;
64d03ab5
AM		 6217
6218 if ((eh->elf.root.type == bfd_link_hash_defined
6219 || eh->elf.root.type == bfd_link_hash_defweak)
6220 && (eh->elf.ref_dynamic
b407645f 6221 || (eh->elf.def_regular
64d03ab5 6222 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6223 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
b407645f
AM		 6224 && (!info->executable
6225 || info->export_dynamic
6226 || (eh->elf.dynamic
6227 && d != NULL
6228 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6229 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6230 || !bfd_hide_sym_by_version (info->version_info,
6231 eh->elf.root.root.string)))))
64d03ab5
AM		 6232 {
6233 asection *code_sec;
b31867b6 6234 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6235
6236 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6237
6238 /* Function descriptor syms cause the associated
6239 function code sym section to be marked. */
b31867b6
AM		 6240 fh = defined_code_entry (eh);
6241 if (fh != NULL)
6242 {
6243 code_sec = fh->elf.root.u.def.section;
6244 code_sec->flags |= SEC_KEEP;
6245 }
64d03ab5
AM		 6246 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6247 && opd_entry_value (eh->elf.root.u.def.section,
6248 eh->elf.root.u.def.value,
aef36ac1 6249 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6250 code_sec->flags |= SEC_KEEP;
6251 }
6252
6253 return TRUE;
6254}
6255
5bd4f169
AM		 6256/* Return the section that should be marked against GC for a given
6257 relocation. */
6258
6259static asection *
4ce794b7 6260ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6261 struct bfd_link_info *info,
4ce794b7
AM		 6262 Elf_Internal_Rela *rel,
6263 struct elf_link_hash_entry *h,
6264 Elf_Internal_Sym *sym)
5bd4f169 6265{
ccfa59ea
AM		 6266 asection *rsec;
6267
ccfa59ea
AM		 6268 /* Syms return NULL if we're marking .opd, so we avoid marking all
6269 function sections, as all functions are referenced in .opd. */
6270 rsec = NULL;
6271 if (get_opd_info (sec) != NULL)
6272 return rsec;
1e2f5b6e 6273
5bd4f169
AM		 6274 if (h != NULL)
6275 {
04c9666a 6276 enum elf_ppc64_reloc_type r_type;
b31867b6 6277 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6278
4ce794b7 6279 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6280 switch (r_type)
5bd4f169
AM		 6281 {
6282 case R_PPC64_GNU_VTINHERIT:
6283 case R_PPC64_GNU_VTENTRY:
6284 break;
6285
6286 default:
6287 switch (h->root.type)
6288 {
6289 case bfd_link_hash_defined:
6290 case bfd_link_hash_defweak:
ccfa59ea 6291 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6292 fdh = defined_func_desc (eh);
6293 if (fdh != NULL)
6294 eh = fdh;
1e2f5b6e
AM		 6295
6296 /* Function descriptor syms cause the associated
6297 function code sym section to be marked. */
b31867b6
AM		 6298 fh = defined_code_entry (eh);
6299 if (fh != NULL)
ccfa59ea
AM		 6300 {
6301 /* They also mark their opd section. */
74f0fb50 6302 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6303
b31867b6 6304 rsec = fh->elf.root.u.def.section;
ccfa59ea 6305 }
8387904d
AM		 6306 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6307 && opd_entry_value (eh->elf.root.u.def.section,
6308 eh->elf.root.u.def.value,
aef36ac1 6309 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6310 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6311 else
1e2f5b6e
AM		 6312 rsec = h->root.u.def.section;
6313 break;
5bd4f169
AM		 6314
6315 case bfd_link_hash_common:
1e2f5b6e
AM		 6316 rsec = h->root.u.c.p->section;
6317 break;
5bd4f169
AM		 6318
6319 default:
fb34365b 6320 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6321 }
6322 }
6323 }
6324 else
6325 {
74f0fb50 6326 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6327
6328 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6329 opd = get_opd_info (rsec);
6330 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6331 {
74f0fb50 6332 rsec->gc_mark = 1;
ccfa59ea 6333
74f0fb50 6334 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 6335 }
5bd4f169
AM		 6336 }
6337
1e2f5b6e 6338 return rsec;
5bd4f169
AM		 6339}
6340
65f38f15
AM		 6341/* Update the .got, .plt. and dynamic reloc reference counts for the
6342 section being removed. */
5bd4f169 6343
b34976b6 6344static bfd_boolean
4ce794b7
AM		 6345ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6346 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6347{
411e1bfb 6348 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6349 Elf_Internal_Shdr *symtab_hdr;
6350 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6351 struct got_entry **local_got_ents;
5bd4f169 6352 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6353
7dda2462
TG		 6354 if (info->relocatable)
6355 return TRUE;
6356
680a3378
AM		 6357 if ((sec->flags & SEC_ALLOC) == 0)
6358 return TRUE;
6359
ec338859
AM		 6360 elf_section_data (sec)->local_dynrel = NULL;
6361
411e1bfb 6362 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6363 if (htab == NULL)
6364 return FALSE;
6365
0ffa91dd 6366 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6367 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6368 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6369
6370 relend = relocs + sec->reloc_count;
6371 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6372 {
6373 unsigned long r_symndx;
04c9666a 6374 enum elf_ppc64_reloc_type r_type;
58ac9f71 6375 struct elf_link_hash_entry *h = NULL;
f961d9dd 6376 unsigned char tls_type = 0;
5bd4f169 6377
a33d1f77 6378 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6379 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6380 if (r_symndx >= symtab_hdr->sh_info)
6381 {
6382 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6383 struct elf_dyn_relocs **pp;
6384 struct elf_dyn_relocs *p;
58ac9f71
AM		 6385
6386 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6387 h = elf_follow_link (h);
58ac9f71
AM		 6388 eh = (struct ppc_link_hash_entry *) h;
6389
6390 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6391 if (p->sec == sec)
6392 {
6393 /* Everything must go for SEC. */
6394 *pp = p->next;
6395 break;
6396 }
6397 }
6398
e054468f
AM		 6399 if (is_branch_reloc (r_type))
6400 {
6401 struct plt_entry **ifunc = NULL;
6402 if (h != NULL)
6403 {
6404 if (h->type == STT_GNU_IFUNC)
6405 ifunc = &h->plt.plist;
6406 }
6407 else if (local_got_ents != NULL)
6408 {
6409 struct plt_entry **local_plt = (struct plt_entry **)
6410 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 6411 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM		 6412 (local_plt + symtab_hdr->sh_info);
6413 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6414 ifunc = local_plt + r_symndx;
6415 }
6416 if (ifunc != NULL)
6417 {
6418 struct plt_entry *ent;
6419
6420 for (ent = *ifunc; ent != NULL; ent = ent->next)
6421 if (ent->addend == rel->r_addend)
6422 break;
6423 if (ent == NULL)
6424 abort ();
6425 if (ent->plt.refcount > 0)
6426 ent->plt.refcount -= 1;
6427 continue;
6428 }
6429 }
6430
a33d1f77
AM		 6431 switch (r_type)
6432 {
411e1bfb
AM		 6433 case R_PPC64_GOT_TLSLD16:
6434 case R_PPC64_GOT_TLSLD16_LO:
6435 case R_PPC64_GOT_TLSLD16_HI:
6436 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6437 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6438 goto dogot;
6439
6440 case R_PPC64_GOT_TLSGD16:
6441 case R_PPC64_GOT_TLSGD16_LO:
6442 case R_PPC64_GOT_TLSGD16_HI:
6443 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6444 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6445 goto dogot;
6446
6447 case R_PPC64_GOT_TPREL16_DS:
6448 case R_PPC64_GOT_TPREL16_LO_DS:
6449 case R_PPC64_GOT_TPREL16_HI:
6450 case R_PPC64_GOT_TPREL16_HA:
6451 tls_type = TLS_TLS | TLS_TPREL;
6452 goto dogot;
6453
6454 case R_PPC64_GOT_DTPREL16_DS:
6455 case R_PPC64_GOT_DTPREL16_LO_DS:
6456 case R_PPC64_GOT_DTPREL16_HI:
6457 case R_PPC64_GOT_DTPREL16_HA:
6458 tls_type = TLS_TLS | TLS_DTPREL;
6459 goto dogot;
6460
a33d1f77
AM		 6461 case R_PPC64_GOT16:
6462 case R_PPC64_GOT16_DS:
6463 case R_PPC64_GOT16_HA:
6464 case R_PPC64_GOT16_HI:
6465 case R_PPC64_GOT16_LO:
6466 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6467 dogot:
6468 {
6469 struct got_entry *ent;
6470
58ac9f71
AM		 6471 if (h != NULL)
6472 ent = h->got.glist;
411e1bfb
AM		 6473 else
6474 ent = local_got_ents[r_symndx];
6475
6476 for (; ent != NULL; ent = ent->next)
6477 if (ent->addend == rel->r_addend
e717da7e 6478 && ent->owner == abfd
411e1bfb
AM		 6479 && ent->tls_type == tls_type)
6480 break;
6481 if (ent == NULL)
6482 abort ();
6483 if (ent->got.refcount > 0)
6484 ent->got.refcount -= 1;
6485 }
a33d1f77 6486 break;
65f38f15 6487
a33d1f77
AM		 6488 case R_PPC64_PLT16_HA:
6489 case R_PPC64_PLT16_HI:
6490 case R_PPC64_PLT16_LO:
6491 case R_PPC64_PLT32:
6492 case R_PPC64_PLT64:
721956f4
AM		 6493 case R_PPC64_REL14:
6494 case R_PPC64_REL14_BRNTAKEN:
6495 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6496 case R_PPC64_REL24:
58ac9f71 6497 if (h != NULL)
5d1634d7 6498 {
411e1bfb
AM		 6499 struct plt_entry *ent;
6500
411e1bfb
AM		 6501 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6502 if (ent->addend == rel->r_addend)
6503 break;
7c6c1722 6504 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6505 ent->plt.refcount -= 1;
5d1634d7 6506 }
e86ce104 6507 break;
5d1634d7 6508
a33d1f77
AM		 6509 default:
6510 break;
6511 }
6512 }
b34976b6 6513 return TRUE;
5bd4f169
AM		 6514}
6515
deb0e272
AM		 6516/* The maximum size of .sfpr. */
6517#define SFPR_MAX (218*4)
6518
6519struct sfpr_def_parms
6520{
699733f6
AM		 6521 const char name[12];
6522 unsigned char lo, hi;
deb0e272
AM		 6523 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6524 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6525};
6526
6527/* Auto-generate _save*, _rest* functions in .sfpr. */
6528
4dfe6ac6 6529static bfd_boolean
deb0e272
AM		 6530sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6531{
6532 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6533 unsigned int i;
6534 size_t len = strlen (parm->name);
6535 bfd_boolean writing = FALSE;
699733f6 6536 char sym[16];
deb0e272 6537
4dfe6ac6
NC		 6538 if (htab == NULL)
6539 return FALSE;
6540
deb0e272
AM		 6541 memcpy (sym, parm->name, len);
6542 sym[len + 2] = 0;
6543
6544 for (i = parm->lo; i <= parm->hi; i++)
6545 {
6546 struct elf_link_hash_entry *h;
6547
6548 sym[len + 0] = i / 10 + '0';
6549 sym[len + 1] = i % 10 + '0';
6550 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6551 if (h != NULL
f5385ebf 6552 && !h->def_regular)
deb0e272
AM		 6553 {
6554 h->root.type = bfd_link_hash_defined;
6555 h->root.u.def.section = htab->sfpr;
6556 h->root.u.def.value = htab->sfpr->size;
6557 h->type = STT_FUNC;
f5385ebf 6558 h->def_regular = 1;
deb0e272
AM		 6559 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6560 writing = TRUE;
6561 if (htab->sfpr->contents == NULL)
6562 {
6563 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6564 if (htab->sfpr->contents == NULL)
6565 return FALSE;
6566 }
6567 }
6568 if (writing)
6569 {
6570 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6571 if (i != parm->hi)
6572 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6573 else
6574 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6575 htab->sfpr->size = p - htab->sfpr->contents;
6576 }
6577 }
6578
6579 return TRUE;
6580}
6581
6582static bfd_byte *
6583savegpr0 (bfd *abfd, bfd_byte *p, int r)
6584{
6585 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6586 return p + 4;
6587}
6588
6589static bfd_byte *
6590savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6591{
6592 p = savegpr0 (abfd, p, r);
a078d95a 6593 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6594 p = p + 4;
6595 bfd_put_32 (abfd, BLR, p);
6596 return p + 4;
6597}
6598
6599static bfd_byte *
6600restgpr0 (bfd *abfd, bfd_byte *p, int r)
6601{
6602 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6603 return p + 4;
6604}
6605
6606static bfd_byte *
6607restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6608{
a078d95a 6609 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6610 p = p + 4;
6611 p = restgpr0 (abfd, p, r);
6612 bfd_put_32 (abfd, MTLR_R0, p);
6613 p = p + 4;
6614 if (r == 29)
6615 {
6616 p = restgpr0 (abfd, p, 30);
6617 p = restgpr0 (abfd, p, 31);
6618 }
6619 bfd_put_32 (abfd, BLR, p);
6620 return p + 4;
6621}
6622
6623static bfd_byte *
6624savegpr1 (bfd *abfd, bfd_byte *p, int r)
6625{
6626 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6627 return p + 4;
6628}
6629
6630static bfd_byte *
6631savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6632{
6633 p = savegpr1 (abfd, p, r);
6634 bfd_put_32 (abfd, BLR, p);
6635 return p + 4;
6636}
6637
6638static bfd_byte *
6639restgpr1 (bfd *abfd, bfd_byte *p, int r)
6640{
6641 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6642 return p + 4;
6643}
6644
6645static bfd_byte *
6646restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6647{
6648 p = restgpr1 (abfd, p, r);
6649 bfd_put_32 (abfd, BLR, p);
6650 return p + 4;
6651}
6652
6653static bfd_byte *
6654savefpr (bfd *abfd, bfd_byte *p, int r)
6655{
6656 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6657 return p + 4;
6658}
6659
6660static bfd_byte *
6661savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6662{
6663 p = savefpr (abfd, p, r);
a078d95a 6664 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6665 p = p + 4;
6666 bfd_put_32 (abfd, BLR, p);
6667 return p + 4;
6668}
6669
6670static bfd_byte *
6671restfpr (bfd *abfd, bfd_byte *p, int r)
6672{
6673 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6674 return p + 4;
6675}
6676
6677static bfd_byte *
6678restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6679{
a078d95a 6680 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6681 p = p + 4;
6682 p = restfpr (abfd, p, r);
6683 bfd_put_32 (abfd, MTLR_R0, p);
6684 p = p + 4;
6685 if (r == 29)
6686 {
6687 p = restfpr (abfd, p, 30);
6688 p = restfpr (abfd, p, 31);
6689 }
6690 bfd_put_32 (abfd, BLR, p);
6691 return p + 4;
6692}
6693
6694static bfd_byte *
6695savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6696{
6697 p = savefpr (abfd, p, r);
6698 bfd_put_32 (abfd, BLR, p);
6699 return p + 4;
6700}
6701
6702static bfd_byte *
6703restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6704{
6705 p = restfpr (abfd, p, r);
6706 bfd_put_32 (abfd, BLR, p);
6707 return p + 4;
6708}
6709
6710static bfd_byte *
6711savevr (bfd *abfd, bfd_byte *p, int r)
6712{
6713 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6714 p = p + 4;
6715 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6716 return p + 4;
6717}
6718
6719static bfd_byte *
6720savevr_tail (bfd *abfd, bfd_byte *p, int r)
6721{
6722 p = savevr (abfd, p, r);
6723 bfd_put_32 (abfd, BLR, p);
6724 return p + 4;
6725}
6726
6727static bfd_byte *
6728restvr (bfd *abfd, bfd_byte *p, int r)
6729{
6730 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6731 p = p + 4;
6732 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6733 return p + 4;
6734}
6735
6736static bfd_byte *
6737restvr_tail (bfd *abfd, bfd_byte *p, int r)
6738{
6739 p = restvr (abfd, p, r);
6740 bfd_put_32 (abfd, BLR, p);
6741 return p + 4;
6742}
6743
e86ce104
AM		 6744/* Called via elf_link_hash_traverse to transfer dynamic linking
6745 information on function code symbol entries to their corresponding
6746 function descriptor symbol entries. */
deb0e272 6747
b34976b6 6748static bfd_boolean
4ce794b7 6749func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6750{
e86ce104 6751 struct bfd_link_info *info;
65f38f15 6752 struct ppc_link_hash_table *htab;
411e1bfb 6753 struct plt_entry *ent;
50bc7936
AM		 6754 struct ppc_link_hash_entry *fh;
6755 struct ppc_link_hash_entry *fdh;
6756 bfd_boolean force_local;
5bd4f169 6757
50bc7936
AM		 6758 fh = (struct ppc_link_hash_entry *) h;
6759 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6760 return TRUE;
e86ce104 6761
4ce794b7 6762 info = inf;
65f38f15 6763 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6764 if (htab == NULL)
6765 return FALSE;
5bd4f169 6766
c09bdfe5
AM		 6767 /* Resolve undefined references to dot-symbols as the value
6768 in the function descriptor, if we have one in a regular object.
6769 This is to satisfy cases like ".quad .foo". Calls to functions
6770 in dynamic objects are handled elsewhere. */
6771 if (fh->elf.root.type == bfd_link_hash_undefweak
6772 && fh->was_undefined
b31867b6
AM		 6773 && (fdh = defined_func_desc (fh)) != NULL
6774 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6775 && opd_entry_value (fdh->elf.root.u.def.section,
6776 fdh->elf.root.u.def.value,
c09bdfe5 6777 &fh->elf.root.u.def.section,
aef36ac1 6778 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6779 {
b31867b6 6780 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6781 fh->elf.forced_local = 1;
b31867b6
AM		 6782 fh->elf.def_regular = fdh->elf.def_regular;
6783 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6784 }
6785
e86ce104
AM		 6786 /* If this is a function code symbol, transfer dynamic linking
6787 information to the function descriptor symbol. */
50bc7936 6788 if (!fh->is_func)
b34976b6 6789 return TRUE;
e86ce104 6790
50bc7936 6791 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6792 if (ent->plt.refcount > 0)
6793 break;
50bc7936
AM		 6794 if (ent == NULL
6795 || fh->elf.root.root.string[0] != '.'
6796 || fh->elf.root.root.string[1] == '\0')
6797 return TRUE;
5bd4f169 6798
50bc7936
AM		 6799 /* Find the corresponding function descriptor symbol. Create it
6800 as undefined if necessary. */
5bd4f169 6801
b31867b6 6802 fdh = lookup_fdh (fh, htab);
50bc7936 6803 if (fdh == NULL
df131623 6804 && !info->executable
50bc7936
AM		 6805 && (fh->elf.root.type == bfd_link_hash_undefined
6806 || fh->elf.root.type == bfd_link_hash_undefweak))
6807 {
908b32fc 6808 fdh = make_fdh (info, fh);
bb700d78
AM		 6809 if (fdh == NULL)
6810 return FALSE;
50bc7936 6811 }
648cca2c 6812
908b32fc 6813 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 6814 code symbol is strong undefined, make the fake sym the same.
6815 If the function code symbol is defined, then force the fake
6816 descriptor local; We can't support overriding of symbols in a
6817 shared library on a fake descriptor. */
908b32fc
AM		 6818
6819 if (fdh != NULL
6820 && fdh->fake
433817dd 6821 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6822 {
433817dd
AM		 6823 if (fh->elf.root.type == bfd_link_hash_undefined)
6824 {
6825 fdh->elf.root.type = bfd_link_hash_undefined;
6826 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6827 }
6828 else if (fh->elf.root.type == bfd_link_hash_defined
6829 || fh->elf.root.type == bfd_link_hash_defweak)
6830 {
6831 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6832 }
908b32fc
AM		 6833 }
6834
50bc7936 6835 if (fdh != NULL
f5385ebf 6836 && !fdh->elf.forced_local
df131623 6837 && (!info->executable
f5385ebf
AM		 6838 || fdh->elf.def_dynamic
6839 || fdh->elf.ref_dynamic
50bc7936
AM		 6840 || (fdh->elf.root.type == bfd_link_hash_undefweak
6841 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6842 {
6843 if (fdh->elf.dynindx == -1)
c152c796 6844 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6845 return FALSE;
f5385ebf
AM		 6846 fdh->elf.ref_regular |= fh->elf.ref_regular;
6847 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6848 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6849 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6850 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6851 {
40d16e0b 6852 move_plt_plist (fh, fdh);
f5385ebf 6853 fdh->elf.needs_plt = 1;
e86ce104 6854 }
50bc7936 6855 fdh->is_func_descriptor = 1;
34814b9f
AM		 6856 fdh->oh = fh;
6857 fh->oh = fdh;
e86ce104
AM		 6858 }
6859
50bc7936
AM		 6860 /* Now that the info is on the function descriptor, clear the
6861 function code sym info. Any function code syms for which we
6862 don't have a definition in a regular file, we force local.
6863 This prevents a shared library from exporting syms that have
6864 been imported from another library. Function code syms that
6865 are really in the library we must leave global to prevent the
6866 linker dragging in a definition from a static library. */
93f3fa99
AM		 6867 force_local = (!fh->elf.def_regular
6868 || fdh == NULL
6869 || !fdh->elf.def_regular
6870 || fdh->elf.forced_local);
50bc7936
AM		 6871 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6872
b34976b6 6873 return TRUE;
e86ce104 6874}
40b8271b 6875
e86ce104 6876/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 6877 this hook to a) provide some gcc support functions, and b) transfer
6878 dynamic linking information gathered so far on function code symbol
6879 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6880
b34976b6 6881static bfd_boolean
4ce794b7
AM		 6882ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6883 struct bfd_link_info *info)
e86ce104
AM		 6884{
6885 struct ppc_link_hash_table *htab;
82bd7b59 6886 unsigned int i;
27fc25a1 6887 static const struct sfpr_def_parms funcs[] =
deb0e272
AM		 6888 {
6889 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6890 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6891 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6892 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6893 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6894 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6895 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6896 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6897 { "._savef", 14, 31, savefpr, savefpr1_tail },
6898 { "._restf", 14, 31, restfpr, restfpr1_tail },
6899 { "_savevr_", 20, 31, savevr, savevr_tail },
6900 { "_restvr_", 20, 31, restvr, restvr_tail }
6901 };
e86ce104
AM		 6902
6903 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6904 if (htab == NULL)
6905 return FALSE;
6906
5295321c
AM		 6907 if (!info->relocatable
6908 && htab->elf.hgot != NULL)
dba6fa9b
AM		 6909 {
6910 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6911 /* Make .TOC. defined so as to prevent it being made dynamic.
6912 The wrong value here is fixed later in ppc64_elf_set_toc. */
6913 htab->elf.hgot->type = STT_OBJECT;
6914 htab->elf.hgot->root.type = bfd_link_hash_defined;
6915 htab->elf.hgot->root.u.def.value = 0;
6916 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6917 htab->elf.hgot->def_regular = 1;
6918 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6919 | STV_HIDDEN);
6920 }
c66bb0ee 6921
82bd7b59
AM		 6922 if (htab->sfpr == NULL)
6923 /* We don't have any relocs. */
b34976b6 6924 return TRUE;
82bd7b59 6925
deb0e272
AM		 6926 /* Provide any missing _save* and _rest* functions. */
6927 htab->sfpr->size = 0;
7d4c687d 6928 if (htab->params->save_restore_funcs)
27fc25a1
AM		 6929 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6930 if (!sfpr_define (info, &funcs[i]))
6931 return FALSE;
82bd7b59 6932
4ce794b7 6933 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6934
eea6121a 6935 if (htab->sfpr->size == 0)
8423293d 6936 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6937
b34976b6 6938 return TRUE;
e86ce104
AM		 6939}
6940
a345bc8d
AM		 6941/* Return true if we have dynamic relocs that apply to read-only sections. */
6942
6943static bfd_boolean
6944readonly_dynrelocs (struct elf_link_hash_entry *h)
6945{
6946 struct ppc_link_hash_entry *eh;
6947 struct elf_dyn_relocs *p;
6948
6949 eh = (struct ppc_link_hash_entry *) h;
6950 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6951 {
6952 asection *s = p->sec->output_section;
6953
6954 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6955 return TRUE;
6956 }
6957 return FALSE;
6958}
6959
e86ce104
AM		 6960/* Adjust a symbol defined by a dynamic object and referenced by a
6961 regular object. The current definition is in some section of the
6962 dynamic object, but we're not including those sections. We have to
6963 change the definition to something the rest of the link can
6964 understand. */
6965
b34976b6 6966static bfd_boolean
4ce794b7
AM		 6967ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6968 struct elf_link_hash_entry *h)
e86ce104
AM		 6969{
6970 struct ppc_link_hash_table *htab;
e86ce104 6971 asection *s;
e86ce104
AM		 6972
6973 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6974 if (htab == NULL)
6975 return FALSE;
e86ce104
AM		 6976
6977 /* Deal with function syms. */
6978 if (h->type == STT_FUNC
e054468f 6979 || h->type == STT_GNU_IFUNC
f5385ebf 6980 || h->needs_plt)
e86ce104
AM		 6981 {
6982 /* Clear procedure linkage table information for any symbol that
6983 won't need a .plt entry. */
411e1bfb
AM		 6984 struct plt_entry *ent;
6985 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6986 if (ent->plt.refcount > 0)
6987 break;
8387904d 6988 if (ent == NULL
e054468f
AM		 6989 || (h->type != STT_GNU_IFUNC
6990 && (SYMBOL_CALLS_LOCAL (info, h)
6991 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6992 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 6993 {
411e1bfb 6994 h->plt.plist = NULL;
f5385ebf 6995 h->needs_plt = 0;
40b8271b 6996 }
a345bc8d
AM		 6997 else if (abiversion (info->output_bfd) == 2)
6998 {
6999 /* After adjust_dynamic_symbol, non_got_ref set in the
7000 non-shared case means that we have allocated space in
7001 .dynbss for the symbol and thus dyn_relocs for this
7002 symbol should be discarded.
7003 If we get here we know we are making a PLT entry for this
7004 symbol, and in an executable we'd normally resolve
7005 relocations against this symbol to the PLT entry. Allow
7006 dynamic relocs if the reference is weak, and the dynamic
7007 relocs will not cause text relocation. */
7008 if (!h->ref_regular_nonweak
7009 && h->non_got_ref
7010 && h->type != STT_GNU_IFUNC
7011 && !readonly_dynrelocs (h))
7012 h->non_got_ref = 0;
7013
7014 /* If making a plt entry, then we don't need copy relocs. */
7015 return TRUE;
7016 }
5bd4f169 7017 }
bbd7ec4a 7018 else
411e1bfb 7019 h->plt.plist = NULL;
5bd4f169
AM		 7020
7021 /* If this is a weak symbol, and there is a real definition, the
7022 processor independent code will have arranged for us to see the
7023 real definition first, and we can just use the same value. */
f6e332e6 7024 if (h->u.weakdef != NULL)
5bd4f169 7025 {
f6e332e6
AM		 7026 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7027 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7028 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7029 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7030 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7031 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7032 return TRUE;
5bd4f169
AM		 7033 }
7034
5bd4f169
AM		 7035 /* If we are creating a shared library, we must presume that the
7036 only references to the symbol are via the global offset table.
7037 For such cases we need not do anything here; the relocations will
7038 be handled correctly by relocate_section. */
7039 if (info->shared)
b34976b6 7040 return TRUE;
5bd4f169 7041
65f38f15
AM		 7042 /* If there are no references to this symbol that do not use the
7043 GOT, we don't need to generate a copy reloc. */
f5385ebf 7044 if (!h->non_got_ref)
b34976b6 7045 return TRUE;
65f38f15 7046
b186458a
JJ		 7047 /* Don't generate a copy reloc for symbols defined in the executable. */
7048 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7049 return TRUE;
7050
a345bc8d
AM		 7051 /* If we didn't find any dynamic relocs in read-only sections, then
7052 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7053 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7054 {
a345bc8d
AM		 7055 h->non_got_ref = 0;
7056 return TRUE;
65f38f15
AM		 7057 }
7058
5d35169e 7059 if (h->plt.plist != NULL)
97b639ba
AM		 7060 {
7061 /* We should never get here, but unfortunately there are versions
7062 of gcc out there that improperly (for this ABI) put initialized
7063 function pointers, vtable refs and suchlike in read-only
7064 sections. Allow them to proceed, but warn that this might
7065 break at runtime. */
25f53a85 7066 info->callbacks->einfo
bc30df16 7067 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7068 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7069 h->root.root.string);
7070 }
5d35169e
AM		 7071
7072 /* This is a reference to a symbol defined by a dynamic object which
7073 is not a function. */
7074
5bd4f169
AM		 7075 /* We must allocate the symbol in our .dynbss section, which will
7076 become part of the .bss section of the executable. There will be
7077 an entry for this symbol in the .dynsym section. The dynamic
7078 object will contain position independent code, so all references
7079 from the dynamic object to this symbol will go through the global
7080 offset table. The dynamic linker will use the .dynsym entry to
7081 determine the address it must put in the global offset table, so
7082 both the dynamic object and the regular object will refer to the
7083 same memory location for the variable. */
5bd4f169 7084
04c9666a
AM		 7085 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7086 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7087 runtime process image. We need to remember the offset into the
7088 .rela.bss section we are going to use. */
1d7e9d18 7089 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7090 {
eea6121a 7091 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7092 h->needs_copy = 1;
5bd4f169
AM		 7093 }
7094
4ce794b7 7095 s = htab->dynbss;
5bd4f169 7096
027297b7 7097 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 7098}
7099
e86ce104
AM		 7100/* If given a function descriptor symbol, hide both the function code
7101 sym and the descriptor. */
7102static void
4ce794b7
AM		 7103ppc64_elf_hide_symbol (struct bfd_link_info *info,
7104 struct elf_link_hash_entry *h,
7105 bfd_boolean force_local)
e86ce104 7106{
34814b9f 7107 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7108 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7109
34814b9f
AM		 7110 eh = (struct ppc_link_hash_entry *) h;
7111 if (eh->is_func_descriptor)
e86ce104 7112 {
34814b9f 7113 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7114
721956f4 7115 if (fh == NULL)
d1329ca3
AM		 7116 {
7117 const char *p, *q;
7118 struct ppc_link_hash_table *htab;
7119 char save;
7120
7121 /* We aren't supposed to use alloca in BFD because on
7122 systems which do not have alloca the version in libiberty
7123 calls xmalloc, which might cause the program to crash
7124 when it runs out of memory. This function doesn't have a
7125 return status, so there's no way to gracefully return an
7126 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7127 accessed; It's either a string in an ELF string table,
7128 or allocated in an objalloc structure. */
d1329ca3 7129
34814b9f 7130 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7131 save = *p;
7132 *(char *) p = '.';
7133 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7134 if (htab == NULL)
7135 return;
7136
34814b9f
AM		 7137 fh = (struct ppc_link_hash_entry *)
7138 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7139 *(char *) p = save;
7140
7141 /* Unfortunately, if it so happens that the string we were
7142 looking for was allocated immediately before this string,
7143 then we overwrote the string terminator. That's the only
7144 reason the lookup should fail. */
7145 if (fh == NULL)
7146 {
34814b9f
AM		 7147 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7148 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7149 --q, --p;
34814b9f
AM		 7150 if (q < eh->elf.root.root.string && *p == '.')
7151 fh = (struct ppc_link_hash_entry *)
7152 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7153 }
7154 if (fh != NULL)
7155 {
34814b9f
AM		 7156 eh->oh = fh;
7157 fh->oh = eh;
d1329ca3
AM		 7158 }
7159 }
e86ce104 7160 if (fh != NULL)
34814b9f 7161 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7162 }
7163}
7164
411e1bfb 7165static bfd_boolean
8843416a
AM		 7166get_sym_h (struct elf_link_hash_entry **hp,
7167 Elf_Internal_Sym **symp,
7168 asection **symsecp,
f961d9dd 7169 unsigned char **tls_maskp,
8843416a
AM		 7170 Elf_Internal_Sym **locsymsp,
7171 unsigned long r_symndx,
7172 bfd *ibfd)
411e1bfb 7173{
0ffa91dd 7174 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7175
7176 if (r_symndx >= symtab_hdr->sh_info)
7177 {
7178 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7179 struct elf_link_hash_entry *h;
7180
7181 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7182 h = elf_follow_link (h);
411e1bfb
AM		 7183
7184 if (hp != NULL)
7185 *hp = h;
7186
7187 if (symp != NULL)
7188 *symp = NULL;
7189
7190 if (symsecp != NULL)
7191 {
7192 asection *symsec = NULL;
7193 if (h->root.type == bfd_link_hash_defined
7194 || h->root.type == bfd_link_hash_defweak)
7195 symsec = h->root.u.def.section;
7196 *symsecp = symsec;
7197 }
7198
e7b938ca 7199 if (tls_maskp != NULL)
411e1bfb
AM		 7200 {
7201 struct ppc_link_hash_entry *eh;
7202
7203 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7204 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7205 }
7206 }
7207 else
7208 {
7209 Elf_Internal_Sym *sym;
7210 Elf_Internal_Sym *locsyms = *locsymsp;
7211
7212 if (locsyms == NULL)
7213 {
7214 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7215 if (locsyms == NULL)
7216 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7217 symtab_hdr->sh_info,
7218 0, NULL, NULL, NULL);
7219 if (locsyms == NULL)
7220 return FALSE;
7221 *locsymsp = locsyms;
7222 }
7223 sym = locsyms + r_symndx;
7224
7225 if (hp != NULL)
7226 *hp = NULL;
7227
7228 if (symp != NULL)
7229 *symp = sym;
7230
7231 if (symsecp != NULL)
cb33740c 7232 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7233
e7b938ca 7234 if (tls_maskp != NULL)
411e1bfb
AM		 7235 {
7236 struct got_entry **lgot_ents;
f961d9dd 7237 unsigned char *tls_mask;
411e1bfb 7238
e7b938ca 7239 tls_mask = NULL;
411e1bfb
AM		 7240 lgot_ents = elf_local_got_ents (ibfd);
7241 if (lgot_ents != NULL)
7242 {
e054468f
AM		 7243 struct plt_entry **local_plt = (struct plt_entry **)
7244 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7245 unsigned char *lgot_masks = (unsigned char *)
e054468f 7246 (local_plt + symtab_hdr->sh_info);
e7b938ca 7247 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7248 }
e7b938ca 7249 *tls_maskp = tls_mask;
411e1bfb
AM		 7250 }
7251 }
7252 return TRUE;
7253}
7254
e7b938ca 7255/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7256 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7257 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7258
7259static int
f961d9dd 7260get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7261 unsigned long *toc_symndx,
7262 bfd_vma *toc_addend,
0d4792f7 7263 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7264 const Elf_Internal_Rela *rel,
7265 bfd *ibfd)
411e1bfb
AM		 7266{
7267 unsigned long r_symndx;
0d4792f7 7268 int next_r;
411e1bfb
AM		 7269 struct elf_link_hash_entry *h;
7270 Elf_Internal_Sym *sym;
7271 asection *sec;
7272 bfd_vma off;
7273
7274 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7275 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7276 return 0;
411e1bfb 7277
e7b938ca 7278 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7279 || sec == NULL
6bee8834 7280 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7281 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7282 return 1;
411e1bfb
AM		 7283
7284 /* Look inside a TOC section too. */
7285 if (h != NULL)
7286 {
7287 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7288 off = h->root.u.def.value;
7289 }
7290 else
7291 off = sym->st_value;
7292 off += rel->r_addend;
7293 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7294 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7295 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7296 if (toc_symndx != NULL)
7297 *toc_symndx = r_symndx;
3a71aa26
AM		 7298 if (toc_addend != NULL)
7299 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7300 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7301 return 0;
854b41e7 7302 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7303 && (next_r == -1 || next_r == -2))
7304 return 1 - next_r;
951fd09b 7305 return 1;
411e1bfb
AM		 7306}
7307
3b421ab3
AM		 7308/* Find (or create) an entry in the tocsave hash table. */
7309
7310static struct tocsave_entry *
7311tocsave_find (struct ppc_link_hash_table *htab,
7312 enum insert_option insert,
7313 Elf_Internal_Sym **local_syms,
7314 const Elf_Internal_Rela *irela,
7315 bfd *ibfd)
7316{
7317 unsigned long r_indx;
7318 struct elf_link_hash_entry *h;
7319 Elf_Internal_Sym *sym;
7320 struct tocsave_entry ent, *p;
7321 hashval_t hash;
7322 struct tocsave_entry **slot;
7323
7324 r_indx = ELF64_R_SYM (irela->r_info);
7325 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7326 return NULL;
7327 if (ent.sec == NULL || ent.sec->output_section == NULL)
7328 {
7329 (*_bfd_error_handler)
7330 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7331 return NULL;
7332 }
7333
7334 if (h != NULL)
7335 ent.offset = h->root.u.def.value;
7336 else
7337 ent.offset = sym->st_value;
7338 ent.offset += irela->r_addend;
7339
7340 hash = tocsave_htab_hash (&ent);
7341 slot = ((struct tocsave_entry **)
7342 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7343 if (slot == NULL)
7344 return NULL;
7345
7346 if (*slot == NULL)
7347 {
7348 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7349 if (p == NULL)
7350 return NULL;
7351 *p = ent;
7352 *slot = p;
7353 }
7354 return *slot;
7355}
7356
754021d0 7357/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7358 code for the old ABI, these will already have been done. */
754021d0
AM		 7359
7360static bfd_boolean
7361adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7362{
7363 struct ppc_link_hash_entry *eh;
7364 asection *sym_sec;
74f0fb50 7365 struct _opd_sec_data *opd;
754021d0
AM		 7366
7367 if (h->root.type == bfd_link_hash_indirect)
7368 return TRUE;
7369
754021d0
AM		 7370 if (h->root.type != bfd_link_hash_defined
7371 && h->root.type != bfd_link_hash_defweak)
7372 return TRUE;
7373
7374 eh = (struct ppc_link_hash_entry *) h;
7375 if (eh->adjust_done)
7376 return TRUE;
7377
7378 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7379 opd = get_opd_info (sym_sec);
7380 if (opd != NULL && opd->adjust != NULL)
754021d0 7381 {
74f0fb50 7382 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 7383 if (adjust == -1)
7384 {
7385 /* This entry has been deleted. */
b3fac117 7386 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7387 if (dsec == NULL)
7388 {
7389 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7390 if (discarded_section (dsec))
81688140 7391 {
b3fac117 7392 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7393 break;
7394 }
7395 }
4025353c 7396 eh->elf.root.u.def.value = 0;
81688140 7397 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7398 }
7399 else
7400 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7401 eh->adjust_done = 1;
7402 }
7403 return TRUE;
7404}
7405
8c1d1bb8 7406/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7407 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7408 have already been determined. */
7409
7410static bfd_boolean
7411dec_dynrel_count (bfd_vma r_info,
7412 asection *sec,
7413 struct bfd_link_info *info,
7414 Elf_Internal_Sym **local_syms,
7415 struct elf_link_hash_entry *h,
19e08130 7416 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7417{
7418 enum elf_ppc64_reloc_type r_type;
19e08130 7419 asection *sym_sec = NULL;
8c1d1bb8
AM		 7420
7421 /* Can this reloc be dynamic? This switch, and later tests here
7422 should be kept in sync with the code in check_relocs. */
7423 r_type = ELF64_R_TYPE (r_info);
7424 switch (r_type)
7425 {
7426 default:
7427 return TRUE;
7428
7429 case R_PPC64_TPREL16:
7430 case R_PPC64_TPREL16_LO:
7431 case R_PPC64_TPREL16_HI:
7432 case R_PPC64_TPREL16_HA:
7433 case R_PPC64_TPREL16_DS:
7434 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7435 case R_PPC64_TPREL16_HIGH:
7436 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7437 case R_PPC64_TPREL16_HIGHER:
7438 case R_PPC64_TPREL16_HIGHERA:
7439 case R_PPC64_TPREL16_HIGHEST:
7440 case R_PPC64_TPREL16_HIGHESTA:
7441 if (!info->shared)
7442 return TRUE;
7443
7444 case R_PPC64_TPREL64:
7445 case R_PPC64_DTPMOD64:
7446 case R_PPC64_DTPREL64:
7447 case R_PPC64_ADDR64:
7448 case R_PPC64_REL30:
7449 case R_PPC64_REL32:
7450 case R_PPC64_REL64:
7451 case R_PPC64_ADDR14:
7452 case R_PPC64_ADDR14_BRNTAKEN:
7453 case R_PPC64_ADDR14_BRTAKEN:
7454 case R_PPC64_ADDR16:
7455 case R_PPC64_ADDR16_DS:
7456 case R_PPC64_ADDR16_HA:
7457 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7458 case R_PPC64_ADDR16_HIGH:
7459 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7460 case R_PPC64_ADDR16_HIGHER:
7461 case R_PPC64_ADDR16_HIGHERA:
7462 case R_PPC64_ADDR16_HIGHEST:
7463 case R_PPC64_ADDR16_HIGHESTA:
7464 case R_PPC64_ADDR16_LO:
7465 case R_PPC64_ADDR16_LO_DS:
7466 case R_PPC64_ADDR24:
7467 case R_PPC64_ADDR32:
7468 case R_PPC64_UADDR16:
7469 case R_PPC64_UADDR32:
7470 case R_PPC64_UADDR64:
7471 case R_PPC64_TOC:
7472 break;
7473 }
7474
7475 if (local_syms != NULL)
7476 {
7477 unsigned long r_symndx;
8c1d1bb8
AM		 7478 bfd *ibfd = sec->owner;
7479
7480 r_symndx = ELF64_R_SYM (r_info);
7481 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7482 return FALSE;
7483 }
7484
7485 if ((info->shared
1d483afe 7486 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7487 || (h != NULL
198f1157 7488 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7489 || h->root.type == bfd_link_hash_defweak
7490 || !h->def_regular))))
7491 || (ELIMINATE_COPY_RELOCS
7492 && !info->shared
7493 && h != NULL
7494 && (h->root.type == bfd_link_hash_defweak
7495 || !h->def_regular)))
7496 ;
7497 else
7498 return TRUE;
7499
7500 if (h != NULL)
6edfbbad 7501 {
19e08130
AM		 7502 struct elf_dyn_relocs *p;
7503 struct elf_dyn_relocs **pp;
7504 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7505
7506 /* elf_gc_sweep may have already removed all dyn relocs associated
7507 with local syms for a given section. Also, symbol flags are
7508 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7509 report a dynreloc miscount. */
7510 if (*pp == NULL && info->gc_sections)
7511 return TRUE;
7512
7513 while ((p = *pp) != NULL)
60124e18 7514 {
19e08130
AM		 7515 if (p->sec == sec)
7516 {
7517 if (!must_be_dyn_reloc (info, r_type))
7518 p->pc_count -= 1;
7519 p->count -= 1;
7520 if (p->count == 0)
7521 *pp = p->next;
7522 return TRUE;
7523 }
7524 pp = &p->next;
60124e18 7525 }
6edfbbad 7526 }
19e08130
AM		 7527 else
7528 {
7529 struct ppc_dyn_relocs *p;
7530 struct ppc_dyn_relocs **pp;
7531 void *vpp;
7532 bfd_boolean is_ifunc;
8c1d1bb8 7533
19e08130
AM		 7534 if (local_syms == NULL)
7535 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7536 if (sym_sec == NULL)
7537 sym_sec = sec;
c57da1a7 7538
19e08130
AM		 7539 vpp = &elf_section_data (sym_sec)->local_dynrel;
7540 pp = (struct ppc_dyn_relocs **) vpp;
7541
7542 if (*pp == NULL && info->gc_sections)
7543 return TRUE;
7544
7545 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7546 while ((p = *pp) != NULL)
8c1d1bb8 7547 {
19e08130
AM		 7548 if (p->sec == sec && p->ifunc == is_ifunc)
7549 {
7550 p->count -= 1;
7551 if (p->count == 0)
7552 *pp = p->next;
7553 return TRUE;
7554 }
7555 pp = &p->next;
8c1d1bb8 7556 }
8c1d1bb8
AM		 7557 }
7558
8de848d8 7559 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7560 sec->owner, sec);
8c1d1bb8
AM		 7561 bfd_set_error (bfd_error_bad_value);
7562 return FALSE;
7563}
7564
754021d0
AM		 7565/* Remove unused Official Procedure Descriptor entries. Currently we
7566 only remove those associated with functions in discarded link-once
7567 sections, or weakly defined functions that have been overridden. It
7568 would be possible to remove many more entries for statically linked
7569 applications. */
7570
b34976b6 7571bfd_boolean
e7d1c40c 7572ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7573{
7574 bfd *ibfd;
754021d0 7575 bfd_boolean some_edited = FALSE;
3f764659 7576 asection *need_pad = NULL;
e7d1c40c
AM		 7577 struct ppc_link_hash_table *htab;
7578
7579 htab = ppc_hash_table (info);
7580 if (htab == NULL)
7581 return FALSE;
1e2f5b6e 7582
c72f2fb2 7583 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7584 {
7585 asection *sec;
7586 Elf_Internal_Rela *relstart, *rel, *relend;
7587 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7588 Elf_Internal_Sym *local_syms;
1e2f5b6e 7589 bfd_vma offset;
74f0fb50 7590 struct _opd_sec_data *opd;
3f764659
JJ		 7591 bfd_boolean need_edit, add_aux_fields;
7592 bfd_size_type cnt_16b = 0;
1e2f5b6e 7593
854b41e7
AM		 7594 if (!is_ppc64_elf (ibfd))
7595 continue;
7596
1e2f5b6e 7597 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7598 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7599 continue;
7600
dbaa2011 7601 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7602 continue;
7603
1e2f5b6e
AM		 7604 if (sec->output_section == bfd_abs_section_ptr)
7605 continue;
7606
7607 /* Look through the section relocs. */
7608 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7609 continue;
7610
6cdc0ccc 7611 local_syms = NULL;
0ffa91dd 7612 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7613
7614 /* Read the relocations. */
4ce794b7 7615 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7616 info->keep_memory);
1e2f5b6e 7617 if (relstart == NULL)
b34976b6 7618 return FALSE;
1e2f5b6e
AM		 7619
7620 /* First run through the relocs to check they are sane, and to
7621 determine whether we need to edit this opd section. */
b34976b6 7622 need_edit = FALSE;
3f764659 7623 need_pad = sec;
1e2f5b6e
AM		 7624 offset = 0;
7625 relend = relstart + sec->reloc_count;
50bc7936 7626 for (rel = relstart; rel < relend; )
1e2f5b6e 7627 {
04c9666a 7628 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7629 unsigned long r_symndx;
7630 asection *sym_sec;
7631 struct elf_link_hash_entry *h;
7632 Elf_Internal_Sym *sym;
7633
3f764659 7634 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7635 only interested in the reloc pointing to a function entry
7636 point. */
50bc7936
AM		 7637 if (rel->r_offset != offset
7638 || rel + 1 >= relend
7639 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 7640 {
7641 /* If someone messes with .opd alignment then after a
7642 "ld -r" we might have padding in the middle of .opd.
7643 Also, there's nothing to prevent someone putting
7644 something silly in .opd with the assembler. No .opd
b34976b6 7645 optimization for them! */
3f764659 7646 broken_opd:
1e2f5b6e 7647 (*_bfd_error_handler)
d003868e 7648 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7649 need_edit = FALSE;
1e2f5b6e
AM		 7650 break;
7651 }
7652
50bc7936
AM		 7653 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7654 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7655 {
7656 (*_bfd_error_handler)
d003868e
AM		 7657 (_("%B: unexpected reloc type %u in .opd section"),
7658 ibfd, r_type);
50bc7936
AM		 7659 need_edit = FALSE;
7660 break;
7661 }
7662
1e2f5b6e 7663 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7664 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7665 r_symndx, ibfd))
50bc7936 7666 goto error_ret;
1e2f5b6e
AM		 7667
7668 if (sym_sec == NULL || sym_sec->owner == NULL)
7669 {
411e1bfb
AM		 7670 const char *sym_name;
7671 if (h != NULL)
7672 sym_name = h->root.root.string;
7673 else
26c61ae5
L		 7674 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7675 sym_sec);
411e1bfb 7676
1e2f5b6e 7677 (*_bfd_error_handler)
d003868e
AM		 7678 (_("%B: undefined sym `%s' in .opd section"),
7679 ibfd, sym_name);
b34976b6 7680 need_edit = FALSE;
1e2f5b6e
AM		 7681 break;
7682 }
7683
51020317
AM		 7684 /* opd entries are always for functions defined in the
7685 current input bfd. If the symbol isn't defined in the
7686 input bfd, then we won't be using the function in this
7687 bfd; It must be defined in a linkonce section in another
7688 bfd, or is weak. It's also possible that we are
7689 discarding the function due to a linker script /DISCARD/,
7690 which we test for via the output_section. */
7691 if (sym_sec->owner != ibfd
7692 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7693 need_edit = TRUE;
1e2f5b6e 7694
50bc7936 7695 rel += 2;
3f764659
JJ		 7696 if (rel == relend
7697 || (rel + 1 == relend && rel->r_offset == offset + 16))
7698 {
7699 if (sec->size == offset + 24)
7700 {
7701 need_pad = NULL;
7702 break;
7703 }
7704 if (rel == relend && sec->size == offset + 16)
7705 {
7706 cnt_16b++;
7707 break;
7708 }
7709 goto broken_opd;
7710 }
7711
7712 if (rel->r_offset == offset + 24)
7713 offset += 24;
7714 else if (rel->r_offset != offset + 16)
7715 goto broken_opd;
7716 else if (rel + 1 < relend
7717 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7718 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7719 {
7720 offset += 16;
7721 cnt_16b++;
7722 }
7723 else if (rel + 2 < relend
7724 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7725 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7726 {
7727 offset += 24;
7728 rel += 1;
7729 }
7730 else
7731 goto broken_opd;
1e2f5b6e
AM		 7732 }
7733
e7d1c40c 7734 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659
JJ		 7735
7736 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 7737 {
7738 Elf_Internal_Rela *write_rel;
d4730f92 7739 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7740 bfd_byte *rptr, *wptr;
983bddc8 7741 bfd_byte *new_contents;
b34976b6 7742 bfd_boolean skip;
3f764659 7743 long opd_ent_size;
74f0fb50
AM		 7744 bfd_size_type amt;
7745
983bddc8 7746 new_contents = NULL;
74f0fb50
AM		 7747 amt = sec->size * sizeof (long) / 8;
7748 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7749 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7750 if (opd->adjust == NULL)
7751 return FALSE;
7752 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7753
7754 /* This seems a waste of time as input .opd sections are all
7755 zeros as generated by gcc, but I suppose there's no reason
7756 this will always be so. We might start putting something in
7757 the third word of .opd entries. */
7758 if ((sec->flags & SEC_IN_MEMORY) == 0)
7759 {
eea6121a
AM		 7760 bfd_byte *loc;
7761 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7762 {
eea6121a
AM		 7763 if (loc != NULL)
7764 free (loc);
50bc7936 7765 error_ret:
6cdc0ccc
AM		 7766 if (local_syms != NULL
7767 && symtab_hdr->contents != (unsigned char *) local_syms)
7768 free (local_syms);
6cdc0ccc
AM		 7769 if (elf_section_data (sec)->relocs != relstart)
7770 free (relstart);
b34976b6 7771 return FALSE;
6cdc0ccc 7772 }
1e2f5b6e
AM		 7773 sec->contents = loc;
7774 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7775 }
7776
7777 elf_section_data (sec)->relocs = relstart;
7778
3f764659 7779 new_contents = sec->contents;
3f764659
JJ		 7780 if (add_aux_fields)
7781 {
7782 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7783 if (new_contents == NULL)
7784 return FALSE;
7785 need_pad = FALSE;
3f764659 7786 }
b4f4e59f
AM		 7787 wptr = new_contents;
7788 rptr = sec->contents;
3f764659 7789
1e2f5b6e 7790 write_rel = relstart;
b34976b6 7791 skip = FALSE;
1e2f5b6e 7792 offset = 0;
3f764659 7793 opd_ent_size = 0;
1e2f5b6e
AM		 7794 for (rel = relstart; rel < relend; rel++)
7795 {
50bc7936
AM		 7796 unsigned long r_symndx;
7797 asection *sym_sec;
7798 struct elf_link_hash_entry *h;
7799 Elf_Internal_Sym *sym;
7800
7801 r_symndx = ELF64_R_SYM (rel->r_info);
7802 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7803 r_symndx, ibfd))
50bc7936
AM		 7804 goto error_ret;
7805
1e2f5b6e
AM		 7806 if (rel->r_offset == offset)
7807 {
50bc7936 7808 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 7809
7810 /* See if the .opd entry is full 24 byte or
7811 16 byte (with fd_aux entry overlapped with next
7812 fd_func). */
7813 opd_ent_size = 24;
7814 if ((rel + 2 == relend && sec->size == offset + 16)
7815 || (rel + 3 < relend
7816 && rel[2].r_offset == offset + 16
7817 && rel[3].r_offset == offset + 24
7818 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7819 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7820 opd_ent_size = 16;
7821
4025353c
AM		 7822 if (h != NULL
7823 && h->root.root.string[0] == '.')
c4f68ce3 7824 {
e7d1c40c 7825 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
c4f68ce3
AM		 7826 if (fdh != NULL
7827 && fdh->elf.root.type != bfd_link_hash_defined
7828 && fdh->elf.root.type != bfd_link_hash_defweak)
7829 fdh = NULL;
7830 }
1e2f5b6e 7831
51020317
AM		 7832 skip = (sym_sec->owner != ibfd
7833 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 7834 if (skip)
7835 {
4025353c 7836 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 7837 {
7838 /* Arrange for the function descriptor sym
7839 to be dropped. */
d6fe2dc1
AM		 7840 fdh->elf.root.u.def.value = 0;
7841 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7842 }
74f0fb50 7843 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 7844 }
7845 else
1e2f5b6e
AM		 7846 {
7847 /* We'll be keeping this opd entry. */
7848
4025353c 7849 if (fdh != NULL)
1e2f5b6e 7850 {
754021d0
AM		 7851 /* Redefine the function descriptor symbol to
7852 this location in the opd section. It is
7853 necessary to update the value here rather
7854 than using an array of adjustments as we do
7855 for local symbols, because various places
7856 in the generic ELF code use the value
7857 stored in u.def.value. */
3f764659 7858 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7859 fdh->adjust_done = 1;
1e2f5b6e 7860 }
754021d0
AM		 7861
7862 /* Local syms are a bit tricky. We could
7863 tweak them as they can be cached, but
7864 we'd need to look through the local syms
7865 for the function descriptor sym which we
7866 don't have at the moment. So keep an
7867 array of adjustments. */
74f0fb50 7868 opd->adjust[rel->r_offset / 8]
3f764659 7869 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 7870
7871 if (wptr != rptr)
3f764659
JJ		 7872 memcpy (wptr, rptr, opd_ent_size);
7873 wptr += opd_ent_size;
7874 if (add_aux_fields && opd_ent_size == 16)
7875 {
7876 memset (wptr, '\0', 8);
7877 wptr += 8;
7878 }
1e2f5b6e 7879 }
3f764659
JJ		 7880 rptr += opd_ent_size;
7881 offset += opd_ent_size;
1e2f5b6e
AM		 7882 }
7883
50bc7936
AM		 7884 if (skip)
7885 {
60124e18
AM		 7886 if (!NO_OPD_RELOCS
7887 && !info->relocatable
18d944df 7888 && !dec_dynrel_count (rel->r_info, sec, info,
19e08130 7889 NULL, h, sym))
8c1d1bb8 7890 goto error_ret;
50bc7936
AM		 7891 }
7892 else
1e2f5b6e 7893 {
50bc7936
AM		 7894 /* We need to adjust any reloc offsets to point to the
7895 new opd entries. While we're at it, we may as well
7896 remove redundant relocs. */
74f0fb50 7897 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 7898 if (write_rel != rel)
7899 memcpy (write_rel, rel, sizeof (*rel));
7900 ++write_rel;
7901 }
7902 }
7903
3f764659 7904 sec->size = wptr - new_contents;
1e2f5b6e 7905 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7906 if (add_aux_fields)
7907 {
7908 free (sec->contents);
7909 sec->contents = new_contents;
7910 }
7911
05bf9422 7912 /* Fudge the header size too, as this is used later in
cdcf6e38 7913 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7914 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7915 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7916 some_edited = TRUE;
1e2f5b6e 7917 }
6cdc0ccc 7918 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7919 free (relstart);
6cdc0ccc 7920
411e1bfb
AM		 7921 if (local_syms != NULL
7922 && symtab_hdr->contents != (unsigned char *) local_syms)
7923 {
7924 if (!info->keep_memory)
7925 free (local_syms);
7926 else
7927 symtab_hdr->contents = (unsigned char *) local_syms;
7928 }
7929 }
7930
754021d0
AM		 7931 if (some_edited)
7932 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7933
3f764659
JJ		 7934 /* If we are doing a final link and the last .opd entry is just 16 byte
7935 long, add a 8 byte padding after it. */
7936 if (need_pad != NULL && !info->relocatable)
7937 {
7938 bfd_byte *p;
7939
7940 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7941 {
7942 BFD_ASSERT (need_pad->size > 0);
7943
7944 p = bfd_malloc (need_pad->size + 8);
7945 if (p == NULL)
7946 return FALSE;
699733f6 7947
3f764659
JJ		 7948 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7949 p, 0, need_pad->size))
7950 return FALSE;
7951
7952 need_pad->contents = p;
7953 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7954 }
7955 else
7956 {
7957 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7958 if (p == NULL)
7959 return FALSE;
7960
7961 need_pad->contents = p;
7962 }
7963
7964 memset (need_pad->contents + need_pad->size, 0, 8);
7965 need_pad->size += 8;
7966 }
7967
411e1bfb
AM		 7968 return TRUE;
7969}
7970
e1918d23 7971/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7972
e1918d23 7973asection *
e7d1c40c 7974ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 7975{
411e1bfb
AM		 7976 struct ppc_link_hash_table *htab;
7977
411e1bfb 7978 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7979 if (htab == NULL)
7980 return NULL;
7981
ee67d69a
AM		 7982 if (abiversion (info->output_bfd) == 1)
7983 htab->opd_abi = 1;
7984
e7d1c40c 7985 if (htab->params->no_multi_toc)
33c0ec9d
AM		 7986 htab->do_multi_toc = 0;
7987 else if (!htab->do_multi_toc)
e7d1c40c 7988 htab->params->no_multi_toc = 1;
33c0ec9d 7989
3a71aa26
AM		 7990 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7991 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7992 FALSE, FALSE, TRUE));
a7f2871e
AM		 7993 /* Move dynamic linking info to the function descriptor sym. */
7994 if (htab->tls_get_addr != NULL)
7995 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 7996 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7997 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7998 FALSE, FALSE, TRUE));
e7d1c40c 7999 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8000 {
8001 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8002
8003 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8004 FALSE, FALSE, TRUE);
8005 if (opt != NULL)
8006 func_desc_adjust (opt, info);
8007 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8008 FALSE, FALSE, TRUE);
8009 if (opt_fd != NULL
8010 && (opt_fd->root.type == bfd_link_hash_defined
8011 || opt_fd->root.type == bfd_link_hash_defweak))
8012 {
8013 /* If glibc supports an optimized __tls_get_addr call stub,
8014 signalled by the presence of __tls_get_addr_opt, and we'll
8015 be calling __tls_get_addr via a plt call stub, then
8016 make __tls_get_addr point to __tls_get_addr_opt. */
8017 tga_fd = &htab->tls_get_addr_fd->elf;
8018 if (htab->elf.dynamic_sections_created
8019 && tga_fd != NULL
8020 && (tga_fd->type == STT_FUNC
8021 || tga_fd->needs_plt)
8022 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8023 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8024 && tga_fd->root.type == bfd_link_hash_undefweak)))
8025 {
8026 struct plt_entry *ent;
8027
8028 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8029 if (ent->plt.refcount > 0)
8030 break;
8031 if (ent != NULL)
8032 {
8033 tga_fd->root.type = bfd_link_hash_indirect;
8034 tga_fd->root.u.i.link = &opt_fd->root;
8035 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8036 if (opt_fd->dynindx != -1)
8037 {
8038 /* Use __tls_get_addr_opt in dynamic relocations. */
8039 opt_fd->dynindx = -1;
8040 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8041 opt_fd->dynstr_index);
8042 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8043 return NULL;
a7f2871e
AM		 8044 }
8045 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8046 tga = &htab->tls_get_addr->elf;
8047 if (opt != NULL && tga != NULL)
8048 {
8049 tga->root.type = bfd_link_hash_indirect;
8050 tga->root.u.i.link = &opt->root;
8051 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8052 _bfd_elf_link_hash_hide_symbol (info, opt,
8053 tga->forced_local);
8054 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8055 }
8056 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8057 htab->tls_get_addr_fd->is_func_descriptor = 1;
8058 if (htab->tls_get_addr != NULL)
8059 {
8060 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8061 htab->tls_get_addr->is_func = 1;
8062 }
8063 }
8064 }
8065 }
8066 else
e7d1c40c 8067 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8068 }
33c0ec9d 8069 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8070}
8387904d 8071
3a71aa26
AM		 8072/* Return TRUE iff REL is a branch reloc with a global symbol matching
8073 HASH1 or HASH2. */
8387904d 8074
3a71aa26
AM		 8075static bfd_boolean
8076branch_reloc_hash_match (const bfd *ibfd,
8077 const Elf_Internal_Rela *rel,
8078 const struct ppc_link_hash_entry *hash1,
8079 const struct ppc_link_hash_entry *hash2)
8080{
8081 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8082 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8083 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8084
e054468f 8085 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8086 {
3a71aa26
AM		 8087 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8088 struct elf_link_hash_entry *h;
8387904d 8089
3a71aa26 8090 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8091 h = elf_follow_link (h);
3a71aa26
AM		 8092 if (h == &hash1->elf || h == &hash2->elf)
8093 return TRUE;
a48ebf4d 8094 }
3a71aa26 8095 return FALSE;
951fd09b 8096}
411e1bfb 8097
951fd09b
AM		 8098/* Run through all the TLS relocs looking for optimization
8099 opportunities. The linker has been hacked (see ppc64elf.em) to do
8100 a preliminary section layout so that we know the TLS segment
8101 offsets. We can't optimize earlier because some optimizations need
8102 to know the tp offset, and we need to optimize before allocating
8103 dynamic relocations. */
8104
8105bfd_boolean
33c0ec9d 8106ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8107{
8108 bfd *ibfd;
8109 asection *sec;
8110 struct ppc_link_hash_table *htab;
663a1470 8111 unsigned char *toc_ref;
102890f0 8112 int pass;
951fd09b 8113
1d483afe 8114 if (info->relocatable || !info->executable)
411e1bfb
AM		 8115 return TRUE;
8116
951fd09b 8117 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8118 if (htab == NULL)
8119 return FALSE;
8120
663a1470
AM		 8121 /* Make two passes over the relocs. On the first pass, mark toc
8122 entries involved with tls relocs, and check that tls relocs
8123 involved in setting up a tls_get_addr call are indeed followed by
8124 such a call. If they are not, we can't do any tls optimization.
8125 On the second pass twiddle tls_mask flags to notify
8126 relocate_section that optimization can be done, and adjust got
8127 and plt refcounts. */
8128 toc_ref = NULL;
8129 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8130 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8131 {
8132 Elf_Internal_Sym *locsyms = NULL;
8133 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8134
102890f0
AM		 8135 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8136 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8137 {
8138 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8139 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8140
102890f0
AM		 8141 /* Read the relocations. */
8142 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8143 info->keep_memory);
8144 if (relstart == NULL)
2915c55b
JK		 8145 {
8146 free (toc_ref);
8147 return FALSE;
8148 }
411e1bfb 8149
102890f0
AM		 8150 relend = relstart + sec->reloc_count;
8151 for (rel = relstart; rel < relend; rel++)
8152 {
8153 enum elf_ppc64_reloc_type r_type;
8154 unsigned long r_symndx;
8155 struct elf_link_hash_entry *h;
8156 Elf_Internal_Sym *sym;
8157 asection *sym_sec;
f961d9dd
AM		 8158 unsigned char *tls_mask;
8159 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8160 bfd_vma value;
8161 bfd_boolean ok_tprel, is_local;
8162 long toc_ref_index = 0;
8163 int expecting_tls_get_addr = 0;
663a1470 8164 bfd_boolean ret = FALSE;
411e1bfb 8165
102890f0
AM		 8166 r_symndx = ELF64_R_SYM (rel->r_info);
8167 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8168 r_symndx, ibfd))
8169 {
8170 err_free_rel:
8171 if (elf_section_data (sec)->relocs != relstart)
8172 free (relstart);
8173 if (toc_ref != NULL)
8174 free (toc_ref);
8175 if (locsyms != NULL
0ffa91dd 8176 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8177 != (unsigned char *) locsyms))
8178 free (locsyms);
663a1470 8179 return ret;
102890f0 8180 }
411e1bfb 8181
102890f0
AM		 8182 if (h != NULL)
8183 {
766bc656
AM		 8184 if (h->root.type == bfd_link_hash_defined
8185 || h->root.type == bfd_link_hash_defweak)
8186 value = h->root.u.def.value;
8187 else if (h->root.type == bfd_link_hash_undefweak)
8188 value = 0;
8189 else
663a1470
AM		 8190 {
8191 found_tls_get_addr_arg = 0;
8192 continue;
8193 }
102890f0
AM		 8194 }
8195 else
8196 /* Symbols referenced by TLS relocs must be of type
8197 STT_TLS. So no need for .opd local sym adjust. */
8198 value = sym->st_value;
8199
8200 ok_tprel = FALSE;
8201 is_local = FALSE;
8202 if (h == NULL
8203 || !h->def_dynamic)
8204 {
8205 is_local = TRUE;
766bc656
AM		 8206 if (h != NULL
8207 && h->root.type == bfd_link_hash_undefweak)
8208 ok_tprel = TRUE;
8209 else
8210 {
8211 value += sym_sec->output_offset;
8212 value += sym_sec->output_section->vma;
8213 value -= htab->elf.tls_sec->vma;
8214 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8215 < (bfd_vma) 1 << 32);
8216 }
102890f0 8217 }
951fd09b 8218
102890f0 8219 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8220 /* If this section has old-style __tls_get_addr calls
8221 without marker relocs, then check that each
8222 __tls_get_addr call reloc is preceded by a reloc
8223 that conceivably belongs to the __tls_get_addr arg
8224 setup insn. If we don't find matching arg setup
8225 relocs, don't do any tls optimization. */
8226 if (pass == 0
8227 && sec->has_tls_get_addr_call
8228 && h != NULL
8229 && (h == &htab->tls_get_addr->elf
8230 || h == &htab->tls_get_addr_fd->elf)
8231 && !found_tls_get_addr_arg
8232 && is_branch_reloc (r_type))
8233 {
25f53a85 8234 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8235 "TLS optimization disabled\n"),
8236 ibfd, sec, rel->r_offset);
8237 ret = TRUE;
8238 goto err_free_rel;
8239 }
8240
8241 found_tls_get_addr_arg = 0;
102890f0
AM		 8242 switch (r_type)
8243 {
8244 case R_PPC64_GOT_TLSLD16:
8245 case R_PPC64_GOT_TLSLD16_LO:
8246 expecting_tls_get_addr = 1;
663a1470 8247 found_tls_get_addr_arg = 1;
102890f0
AM		 8248 /* Fall thru */
8249
8250 case R_PPC64_GOT_TLSLD16_HI:
8251 case R_PPC64_GOT_TLSLD16_HA:
8252 /* These relocs should never be against a symbol
8253 defined in a shared lib. Leave them alone if
8254 that turns out to be the case. */
8255 if (!is_local)
8256 continue;
411e1bfb 8257
102890f0 8258 /* LD -> LE */
411e1bfb 8259 tls_set = 0;
102890f0
AM		 8260 tls_clear = TLS_LD;
8261 tls_type = TLS_TLS | TLS_LD;
8262 break;
411e1bfb 8263
102890f0
AM		 8264 case R_PPC64_GOT_TLSGD16:
8265 case R_PPC64_GOT_TLSGD16_LO:
8266 expecting_tls_get_addr = 1;
663a1470 8267 found_tls_get_addr_arg = 1;
102890f0
AM		 8268 /* Fall thru */
8269
8270 case R_PPC64_GOT_TLSGD16_HI:
8271 case R_PPC64_GOT_TLSGD16_HA:
8272 if (ok_tprel)
8273 /* GD -> LE */
411e1bfb 8274 tls_set = 0;
102890f0
AM		 8275 else
8276 /* GD -> IE */
8277 tls_set = TLS_TLS | TLS_TPRELGD;
8278 tls_clear = TLS_GD;
8279 tls_type = TLS_TLS | TLS_GD;
8280 break;
8281
8282 case R_PPC64_GOT_TPREL16_DS:
8283 case R_PPC64_GOT_TPREL16_LO_DS:
8284 case R_PPC64_GOT_TPREL16_HI:
8285 case R_PPC64_GOT_TPREL16_HA:
8286 if (ok_tprel)
8287 {
8288 /* IE -> LE */
8289 tls_set = 0;
8290 tls_clear = TLS_TPREL;
8291 tls_type = TLS_TLS | TLS_TPREL;
8292 break;
8293 }
411e1bfb
AM		 8294 continue;
8295
727fc41e
AM		 8296 case R_PPC64_TLSGD:
8297 case R_PPC64_TLSLD:
663a1470
AM		 8298 found_tls_get_addr_arg = 1;
8299 /* Fall thru */
8300
8301 case R_PPC64_TLS:
8302 case R_PPC64_TOC16:
8303 case R_PPC64_TOC16_LO:
102890f0
AM		 8304 if (sym_sec == NULL || sym_sec != toc)
8305 continue;
8306
8307 /* Mark this toc entry as referenced by a TLS
8308 code sequence. We can do that now in the
8309 case of R_PPC64_TLS, and after checking for
8310 tls_get_addr for the TOC16 relocs. */
8311 if (toc_ref == NULL)
663a1470
AM		 8312 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8313 if (toc_ref == NULL)
8314 goto err_free_rel;
8315
102890f0
AM		 8316 if (h != NULL)
8317 value = h->root.u.def.value;
8318 else
8319 value = sym->st_value;
8320 value += rel->r_addend;
8321 BFD_ASSERT (value < toc->size && value % 8 == 0);
663a1470 8322 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8323 if (r_type == R_PPC64_TLS
8324 || r_type == R_PPC64_TLSGD
8325 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8326 {
8327 toc_ref[toc_ref_index] = 1;
8328 continue;
8329 }
8330
8331 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8332 continue;
8333
8334 tls_set = 0;
8335 tls_clear = 0;
8336 expecting_tls_get_addr = 2;
8337 break;
8338
8339 case R_PPC64_TPREL64:
8340 if (pass == 0
8341 || sec != toc
8342 || toc_ref == NULL
663a1470 8343 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8344 continue;
8345 if (ok_tprel)
8346 {
8347 /* IE -> LE */
8348 tls_set = TLS_EXPLICIT;
8349 tls_clear = TLS_TPREL;
8350 break;
8351 }
8352 continue;
8353
8354 case R_PPC64_DTPMOD64:
8355 if (pass == 0
8356 || sec != toc
8357 || toc_ref == NULL
663a1470 8358 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8359 continue;
8360 if (rel + 1 < relend
8361 && (rel[1].r_info
8362 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8363 && rel[1].r_offset == rel->r_offset + 8)
8364 {
8365 if (ok_tprel)
8366 /* GD -> LE */
8367 tls_set = TLS_EXPLICIT | TLS_GD;
8368 else
8369 /* GD -> IE */
8370 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8371 tls_clear = TLS_GD;
8372 }
8373 else
8374 {
8375 if (!is_local)
8376 continue;
8377
8378 /* LD -> LE */
8379 tls_set = TLS_EXPLICIT;
8380 tls_clear = TLS_LD;
8381 }
8382 break;
8383
8384 default:
8385 continue;
8386 }
8387
8388 if (pass == 0)
8389 {
727fc41e
AM		 8390 if (!expecting_tls_get_addr
8391 || !sec->has_tls_get_addr_call)
102890f0
AM		 8392 continue;
8393
3a71aa26
AM		 8394 if (rel + 1 < relend
8395 && branch_reloc_hash_match (ibfd, rel + 1,
8396 htab->tls_get_addr,
8397 htab->tls_get_addr_fd))
102890f0 8398 {
3a71aa26 8399 if (expecting_tls_get_addr == 2)
102890f0 8400 {
3a71aa26 8401 /* Check for toc tls entries. */
f961d9dd 8402 unsigned char *toc_tls;
3a71aa26
AM		 8403 int retval;
8404
8405 retval = get_tls_mask (&toc_tls, NULL, NULL,
8406 &locsyms,
8407 rel, ibfd);
8408 if (retval == 0)
8409 goto err_free_rel;
663a1470
AM		 8410 if (toc_tls != NULL)
8411 {
8412 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8413 found_tls_get_addr_arg = 1;
8414 if (retval > 1)
8415 toc_ref[toc_ref_index] = 1;
8416 }
102890f0 8417 }
3a71aa26 8418 continue;
102890f0
AM		 8419 }
8420
8421 if (expecting_tls_get_addr != 1)
8422 continue;
8423
8424 /* Uh oh, we didn't find the expected call. We
8425 could just mark this symbol to exclude it
8426 from tls optimization but it's safer to skip
663a1470 8427 the entire optimization. */
25f53a85 8428 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8429 "TLS optimization disabled\n"),
8430 ibfd, sec, rel->r_offset);
8431 ret = TRUE;
8432 goto err_free_rel;
102890f0
AM		 8433 }
8434
85f7a9cb 8435 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8436 {
8437 struct plt_entry *ent;
8438 for (ent = htab->tls_get_addr->elf.plt.plist;
8439 ent != NULL;
8440 ent = ent->next)
8441 if (ent->addend == 0)
411e1bfb 8442 {
102890f0 8443 if (ent->plt.refcount > 0)
30038c59 8444 {
102890f0
AM		 8445 ent->plt.refcount -= 1;
8446 expecting_tls_get_addr = 0;
30038c59 8447 }
102890f0 8448 break;
411e1bfb 8449 }
102890f0 8450 }
411e1bfb 8451
85f7a9cb 8452 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8453 {
8454 struct plt_entry *ent;
8455 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8456 ent != NULL;
8457 ent = ent->next)
8458 if (ent->addend == 0)
411e1bfb 8459 {
102890f0
AM		 8460 if (ent->plt.refcount > 0)
8461 ent->plt.refcount -= 1;
8462 break;
411e1bfb 8463 }
102890f0 8464 }
411e1bfb 8465
102890f0 8466 if (tls_clear == 0)
30038c59
AM		 8467 continue;
8468
102890f0
AM		 8469 if ((tls_set & TLS_EXPLICIT) == 0)
8470 {
8471 struct got_entry *ent;
411e1bfb 8472
102890f0
AM		 8473 /* Adjust got entry for this reloc. */
8474 if (h != NULL)
8475 ent = h->got.glist;
8476 else
8477 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8478
102890f0
AM		 8479 for (; ent != NULL; ent = ent->next)
8480 if (ent->addend == rel->r_addend
8481 && ent->owner == ibfd
8482 && ent->tls_type == tls_type)
8483 break;
8484 if (ent == NULL)
8485 abort ();
411e1bfb 8486
102890f0
AM		 8487 if (tls_set == 0)
8488 {
8489 /* We managed to get rid of a got entry. */
8490 if (ent->got.refcount > 0)
8491 ent->got.refcount -= 1;
8492 }
8493 }
8494 else
8495 {
8496 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8497 we'll lose one or two dyn relocs. */
8498 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8499 NULL, h, sym))
102890f0 8500 return FALSE;
411e1bfb 8501
102890f0
AM		 8502 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8503 {
8504 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8505 NULL, h, sym))
102890f0
AM		 8506 return FALSE;
8507 }
8508 }
411e1bfb 8509
102890f0
AM		 8510 *tls_mask |= tls_set;
8511 *tls_mask &= ~tls_clear;
8512 }
8c1d1bb8 8513
102890f0
AM		 8514 if (elf_section_data (sec)->relocs != relstart)
8515 free (relstart);
8516 }
411e1bfb 8517
663a1470
AM		 8518 if (locsyms != NULL
8519 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8520 {
8521 if (!info->keep_memory)
8522 free (locsyms);
8523 else
8524 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8525 }
8526 }
411e1bfb 8527
663a1470
AM		 8528 if (toc_ref != NULL)
8529 free (toc_ref);
b34976b6 8530 return TRUE;
1e2f5b6e 8531}
b34976b6 8532
c5614fa4
AM		 8533/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8534 the values of any global symbols in a toc section that has been
8535 edited. Globals in toc sections should be a rarity, so this function
8536 sets a flag if any are found in toc sections other than the one just
8537 edited, so that futher hash table traversals can be avoided. */
8538
8539struct adjust_toc_info
8540{
8541 asection *toc;
8542 unsigned long *skip;
8543 bfd_boolean global_toc_syms;
8544};
8545
ba761f19
AM		 8546enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8547
c5614fa4
AM		 8548static bfd_boolean
8549adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8550{
8551 struct ppc_link_hash_entry *eh;
8552 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8553 unsigned long i;
c5614fa4 8554
c5614fa4
AM		 8555 if (h->root.type != bfd_link_hash_defined
8556 && h->root.type != bfd_link_hash_defweak)
8557 return TRUE;
8558
8559 eh = (struct ppc_link_hash_entry *) h;
8560 if (eh->adjust_done)
8561 return TRUE;
8562
8563 if (eh->elf.root.u.def.section == toc_inf->toc)
8564 {
854b41e7
AM		 8565 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8566 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8567 else
854b41e7
AM		 8568 i = eh->elf.root.u.def.value >> 3;
8569
ba761f19 8570 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8571 {
8572 (*_bfd_error_handler)
854b41e7
AM		 8573 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8574 do
8575 ++i;
ba761f19 8576 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8577 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8578 }
854b41e7
AM		 8579
8580 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8581 eh->adjust_done = 1;
8582 }
8583 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8584 toc_inf->global_toc_syms = TRUE;
8585
8586 return TRUE;
8587}
8588
560c8763
AM		 8589/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8590
8591static bfd_boolean
8592ok_lo_toc_insn (unsigned int insn)
8593{
8594 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8595 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8596 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8597 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8598 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8599 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8600 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8601 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8602 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8603 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8604 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8605 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8606 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8607 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8608 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8609 && (insn & 3) != 1)
8610 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8611 && ((insn & 3) == 0 || (insn & 3) == 3))
8612 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8613}
8614
c5614fa4
AM		 8615/* Examine all relocs referencing .toc sections in order to remove
8616 unused .toc entries. */
8617
8618bfd_boolean
33c0ec9d 8619ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8620{
8621 bfd *ibfd;
8622 struct adjust_toc_info toc_inf;
67f0cbdb 8623 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8624
67f0cbdb 8625 htab->do_toc_opt = 1;
c5614fa4 8626 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8627 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8628 {
8629 asection *toc, *sec;
8630 Elf_Internal_Shdr *symtab_hdr;
8631 Elf_Internal_Sym *local_syms;
425b145b 8632 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8633 unsigned long *skip, *drop;
8634 unsigned char *used;
8635 unsigned char *keep, last, some_unused;
8636
854b41e7
AM		 8637 if (!is_ppc64_elf (ibfd))
8638 continue;
8639
c5614fa4
AM		 8640 toc = bfd_get_section_by_name (ibfd, ".toc");
8641 if (toc == NULL
92b7a70f 8642 || toc->size == 0
dbaa2011
AM		 8643 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8644 || discarded_section (toc))
c5614fa4
AM		 8645 continue;
8646
425b145b 8647 toc_relocs = NULL;
c5614fa4 8648 local_syms = NULL;
0ffa91dd 8649 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8650
8651 /* Look at sections dropped from the final link. */
8652 skip = NULL;
8653 relstart = NULL;
8654 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8655 {
8656 if (sec->reloc_count == 0
dbaa2011 8657 || !discarded_section (sec)
c5614fa4
AM		 8658 || get_opd_info (sec)
8659 || (sec->flags & SEC_ALLOC) == 0
8660 || (sec->flags & SEC_DEBUGGING) != 0)
8661 continue;
8662
8663 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8664 if (relstart == NULL)
8665 goto error_ret;
8666
8667 /* Run through the relocs to see which toc entries might be
8668 unused. */
8669 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8670 {
8671 enum elf_ppc64_reloc_type r_type;
8672 unsigned long r_symndx;
8673 asection *sym_sec;
8674 struct elf_link_hash_entry *h;
8675 Elf_Internal_Sym *sym;
8676 bfd_vma val;
8677
8678 r_type = ELF64_R_TYPE (rel->r_info);
8679 switch (r_type)
8680 {
8681 default:
8682 continue;
8683
8684 case R_PPC64_TOC16:
8685 case R_PPC64_TOC16_LO:
8686 case R_PPC64_TOC16_HI:
8687 case R_PPC64_TOC16_HA:
8688 case R_PPC64_TOC16_DS:
8689 case R_PPC64_TOC16_LO_DS:
8690 break;
8691 }
8692
8693 r_symndx = ELF64_R_SYM (rel->r_info);
8694 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8695 r_symndx, ibfd))
8696 goto error_ret;
8697
8698 if (sym_sec != toc)
8699 continue;
8700
8701 if (h != NULL)
8702 val = h->root.u.def.value;
8703 else
8704 val = sym->st_value;
8705 val += rel->r_addend;
8706
8707 if (val >= toc->size)
8708 continue;
8709
8710 /* Anything in the toc ought to be aligned to 8 bytes.
8711 If not, don't mark as unused. */
8712 if (val & 7)
8713 continue;
8714
8715 if (skip == NULL)
8716 {
854b41e7 8717 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8718 if (skip == NULL)
8719 goto error_ret;
8720 }
8721
ba761f19 8722 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8723 }
8724
8725 if (elf_section_data (sec)->relocs != relstart)
8726 free (relstart);
8727 }
8728
ba761f19
AM		 8729 /* For largetoc loads of address constants, we can convert
8730 . addis rx,2,addr@got@ha
8731 . ld ry,addr@got@l(rx)
8732 to
8733 . addis rx,2,addr@toc@ha
8734 . addi ry,rx,addr@toc@l
8735 when addr is within 2G of the toc pointer. This then means
8736 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8737
ba761f19
AM		 8738 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8739 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8740 && toc->reloc_count != 0)
8741 {
8742 /* Read toc relocs. */
425b145b
AM		 8743 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8744 info->keep_memory);
8745 if (toc_relocs == NULL)
ba761f19
AM		 8746 goto error_ret;
8747
425b145b 8748 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8749 {
8750 enum elf_ppc64_reloc_type r_type;
8751 unsigned long r_symndx;
8752 asection *sym_sec;
8753 struct elf_link_hash_entry *h;
8754 Elf_Internal_Sym *sym;
8755 bfd_vma val, addr;
8756
8757 r_type = ELF64_R_TYPE (rel->r_info);
8758 if (r_type != R_PPC64_ADDR64)
8759 continue;
8760
8761 r_symndx = ELF64_R_SYM (rel->r_info);
8762 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8763 r_symndx, ibfd))
8764 goto error_ret;
8765
425b145b 8766 if (sym_sec == NULL
dbaa2011 8767 || discarded_section (sym_sec))
425b145b
AM		 8768 continue;
8769
afe397ea 8770 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8771 continue;
8772
8773 if (h != NULL)
bddc25c9
AM		 8774 {
8775 if (h->type == STT_GNU_IFUNC)
8776 continue;
8777 val = h->root.u.def.value;
8778 }
ba761f19 8779 else
bddc25c9
AM		 8780 {
8781 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8782 continue;
8783 val = sym->st_value;
8784 }
ba761f19
AM		 8785 val += rel->r_addend;
8786 val += sym_sec->output_section->vma + sym_sec->output_offset;
8787
8788 /* We don't yet know the exact toc pointer value, but we
8789 know it will be somewhere in the toc section. Don't
8790 optimize if the difference from any possible toc
8791 pointer is outside [ff..f80008000, 7fff7fff]. */
8792 addr = toc->output_section->vma + TOC_BASE_OFF;
8793 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8794 continue;
8795
8796 addr = toc->output_section->vma + toc->output_section->rawsize;
8797 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8798 continue;
8799
8800 if (skip == NULL)
8801 {
8802 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8803 if (skip == NULL)
8804 goto error_ret;
8805 }
8806
8807 skip[rel->r_offset >> 3]
425b145b 8808 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8809 }
ba761f19
AM		 8810 }
8811
c5614fa4
AM		 8812 if (skip == NULL)
8813 continue;
8814
8815 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8816 if (used == NULL)
8817 {
8818 error_ret:
8819 if (local_syms != NULL
8820 && symtab_hdr->contents != (unsigned char *) local_syms)
8821 free (local_syms);
8822 if (sec != NULL
8823 && relstart != NULL
8824 && elf_section_data (sec)->relocs != relstart)
8825 free (relstart);
425b145b
AM		 8826 if (toc_relocs != NULL
8827 && elf_section_data (toc)->relocs != toc_relocs)
8828 free (toc_relocs);
c5614fa4
AM		 8829 if (skip != NULL)
8830 free (skip);
8831 return FALSE;
8832 }
8833
30038c59
AM		 8834 /* Now check all kept sections that might reference the toc.
8835 Check the toc itself last. */
8836 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8837 : ibfd->sections);
c5614fa4 8838 sec != NULL;
c5614fa4 8839 sec = (sec == toc ? NULL
c5614fa4 8840 : sec->next == NULL ? toc
30038c59 8841 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8842 : sec->next))
8843 {
8844 int repeat;
8845
8846 if (sec->reloc_count == 0
dbaa2011 8847 || discarded_section (sec)
c5614fa4
AM		 8848 || get_opd_info (sec)
8849 || (sec->flags & SEC_ALLOC) == 0
8850 || (sec->flags & SEC_DEBUGGING) != 0)
8851 continue;
8852
854b41e7
AM		 8853 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8854 info->keep_memory);
c5614fa4 8855 if (relstart == NULL)
2915c55b
JK		 8856 {
8857 free (used);
8858 goto error_ret;
8859 }
c5614fa4
AM		 8860
8861 /* Mark toc entries referenced as used. */
c5614fa4 8862 do
d4f1ee75
AM		 8863 {
8864 repeat = 0;
8865 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8866 {
8867 enum elf_ppc64_reloc_type r_type;
8868 unsigned long r_symndx;
8869 asection *sym_sec;
8870 struct elf_link_hash_entry *h;
8871 Elf_Internal_Sym *sym;
8872 bfd_vma val;
8873 enum {no_check, check_lo, check_ha} insn_check;
98528052 8874
d4f1ee75
AM		 8875 r_type = ELF64_R_TYPE (rel->r_info);
8876 switch (r_type)
8877 {
8878 default:
8879 insn_check = no_check;
8880 break;
98528052 8881
d4f1ee75
AM		 8882 case R_PPC64_GOT_TLSLD16_HA:
8883 case R_PPC64_GOT_TLSGD16_HA:
8884 case R_PPC64_GOT_TPREL16_HA:
8885 case R_PPC64_GOT_DTPREL16_HA:
8886 case R_PPC64_GOT16_HA:
8887 case R_PPC64_TOC16_HA:
8888 insn_check = check_ha;
8889 break;
98528052 8890
d4f1ee75
AM		 8891 case R_PPC64_GOT_TLSLD16_LO:
8892 case R_PPC64_GOT_TLSGD16_LO:
8893 case R_PPC64_GOT_TPREL16_LO_DS:
8894 case R_PPC64_GOT_DTPREL16_LO_DS:
8895 case R_PPC64_GOT16_LO:
8896 case R_PPC64_GOT16_LO_DS:
8897 case R_PPC64_TOC16_LO:
8898 case R_PPC64_TOC16_LO_DS:
8899 insn_check = check_lo;
8900 break;
8901 }
560c8763 8902
d4f1ee75
AM		 8903 if (insn_check != no_check)
8904 {
8905 bfd_vma off = rel->r_offset & ~3;
8906 unsigned char buf[4];
8907 unsigned int insn;
c5614fa4 8908
d4f1ee75
AM		 8909 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8910 {
8911 free (used);
8912 goto error_ret;
8913 }
8914 insn = bfd_get_32 (ibfd, buf);
8915 if (insn_check == check_lo
8916 ? !ok_lo_toc_insn (insn)
8917 : ((insn & ((0x3f << 26) | 0x1f << 16))
8918 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8919 {
8920 char str[12];
8921
8922 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8923 sprintf (str, "%#08x", insn);
8924 info->callbacks->einfo
8925 (_("%P: %H: toc optimization is not supported for"
8926 " %s instruction.\n"),
8927 ibfd, sec, rel->r_offset & ~3, str);
8928 }
8929 }
c5614fa4 8930
d4f1ee75
AM		 8931 switch (r_type)
8932 {
8933 case R_PPC64_TOC16:
8934 case R_PPC64_TOC16_LO:
8935 case R_PPC64_TOC16_HI:
8936 case R_PPC64_TOC16_HA:
8937 case R_PPC64_TOC16_DS:
8938 case R_PPC64_TOC16_LO_DS:
8939 /* In case we're taking addresses of toc entries. */
8940 case R_PPC64_ADDR64:
8941 break;
c5614fa4 8942
d4f1ee75
AM		 8943 default:
8944 continue;
8945 }
c5614fa4 8946
d4f1ee75
AM		 8947 r_symndx = ELF64_R_SYM (rel->r_info);
8948 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8949 r_symndx, ibfd))
8950 {
8951 free (used);
8952 goto error_ret;
8953 }
c5614fa4 8954
d4f1ee75
AM		 8955 if (sym_sec != toc)
8956 continue;
c5614fa4 8957
d4f1ee75
AM		 8958 if (h != NULL)
8959 val = h->root.u.def.value;
8960 else
8961 val = sym->st_value;
8962 val += rel->r_addend;
ba761f19 8963
d4f1ee75
AM		 8964 if (val >= toc->size)
8965 continue;
ba761f19 8966
d4f1ee75
AM		 8967 if ((skip[val >> 3] & can_optimize) != 0)
8968 {
8969 bfd_vma off;
8970 unsigned char opc;
8971
8972 switch (r_type)
8973 {
8974 case R_PPC64_TOC16_HA:
ba761f19 8975 break;
ba761f19 8976
d4f1ee75
AM		 8977 case R_PPC64_TOC16_LO_DS:
8978 off = rel->r_offset;
8979 off += (bfd_big_endian (ibfd) ? -2 : 3);
8980 if (!bfd_get_section_contents (ibfd, sec, &opc,
8981 off, 1))
8982 {
8983 free (used);
8984 goto error_ret;
8985 }
8986 if ((opc & (0x3f << 2)) == (58u << 2))
8987 break;
8988 /* Fall thru */
ba761f19 8989
d4f1ee75
AM		 8990 default:
8991 /* Wrong sort of reloc, or not a ld. We may
8992 as well clear ref_from_discarded too. */
8993 skip[val >> 3] = 0;
8994 }
8995 }
8996
8997 if (sec != toc)
8998 used[val >> 3] = 1;
8999 /* For the toc section, we only mark as used if this
9000 entry itself isn't unused. */
9001 else if ((used[rel->r_offset >> 3]
9002 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9003 && !used[val >> 3])
9004 {
9005 /* Do all the relocs again, to catch reference
9006 chains. */
9007 repeat = 1;
9008 used[val >> 3] = 1;
9009 }
9010 }
9011 }
c5614fa4 9012 while (repeat);
854b41e7
AM		 9013
9014 if (elf_section_data (sec)->relocs != relstart)
9015 free (relstart);
c5614fa4
AM		 9016 }
9017
9018 /* Merge the used and skip arrays. Assume that TOC
9019 doublewords not appearing as either used or unused belong
9020 to to an entry more than one doubleword in size. */
9021 for (drop = skip, keep = used, last = 0, some_unused = 0;
9022 drop < skip + (toc->size + 7) / 8;
9023 ++drop, ++keep)
9024 {
9025 if (*keep)
9026 {
ba761f19
AM		 9027 *drop &= ~ref_from_discarded;
9028 if ((*drop & can_optimize) != 0)
9029 some_unused = 1;
c5614fa4
AM		 9030 last = 0;
9031 }
b140b010 9032 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9033 {
9034 some_unused = 1;
ba761f19 9035 last = ref_from_discarded;
c5614fa4
AM		 9036 }
9037 else
9038 *drop = last;
9039 }
9040
9041 free (used);
9042
9043 if (some_unused)
9044 {
9045 bfd_byte *contents, *src;
9046 unsigned long off;
d62b3684 9047 Elf_Internal_Sym *sym;
ba761f19 9048 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9049
9050 /* Shuffle the toc contents, and at the same time convert the
9051 skip array from booleans into offsets. */
9052 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9053 goto error_ret;
9054
9055 elf_section_data (toc)->this_hdr.contents = contents;
9056
9057 for (src = contents, off = 0, drop = skip;
9058 src < contents + toc->size;
9059 src += 8, ++drop)
9060 {
ba761f19
AM		 9061 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9062 off += 8;
c5614fa4
AM		 9063 else if (off != 0)
9064 {
9065 *drop = off;
9066 memcpy (src - off, src, 8);
9067 }
9068 }
854b41e7 9069 *drop = off;
c5614fa4
AM		 9070 toc->rawsize = toc->size;
9071 toc->size = src - contents - off;
9072
ba761f19
AM		 9073 /* Adjust addends for relocs against the toc section sym,
9074 and optimize any accesses we can. */
c5614fa4
AM		 9075 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9076 {
9077 if (sec->reloc_count == 0
dbaa2011 9078 || discarded_section (sec))
c5614fa4
AM		 9079 continue;
9080
9081 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9082 info->keep_memory);
c5614fa4
AM		 9083 if (relstart == NULL)
9084 goto error_ret;
9085
9086 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9087 {
9088 enum elf_ppc64_reloc_type r_type;
9089 unsigned long r_symndx;
9090 asection *sym_sec;
9091 struct elf_link_hash_entry *h;
854b41e7 9092 bfd_vma val;
c5614fa4
AM		 9093
9094 r_type = ELF64_R_TYPE (rel->r_info);
9095 switch (r_type)
9096 {
9097 default:
9098 continue;
9099
9100 case R_PPC64_TOC16:
9101 case R_PPC64_TOC16_LO:
9102 case R_PPC64_TOC16_HI:
9103 case R_PPC64_TOC16_HA:
9104 case R_PPC64_TOC16_DS:
9105 case R_PPC64_TOC16_LO_DS:
9106 case R_PPC64_ADDR64:
9107 break;
9108 }
9109
9110 r_symndx = ELF64_R_SYM (rel->r_info);
9111 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9112 r_symndx, ibfd))
9113 goto error_ret;
9114
ba761f19 9115 if (sym_sec != toc)
c5614fa4
AM		 9116 continue;
9117
ba761f19
AM		 9118 if (h != NULL)
9119 val = h->root.u.def.value;
9120 else
9121 {
9122 val = sym->st_value;
9123 if (val != 0)
9124 local_toc_syms = TRUE;
9125 }
9126
9127 val += rel->r_addend;
854b41e7
AM		 9128
9129 if (val > toc->rawsize)
9130 val = toc->rawsize;
ba761f19
AM		 9131 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9132 continue;
9133 else if ((skip[val >> 3] & can_optimize) != 0)
9134 {
9135 Elf_Internal_Rela *tocrel
425b145b 9136 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9137 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9138
9139 switch (r_type)
9140 {
9141 case R_PPC64_TOC16_HA:
9142 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9143 break;
9144
9145 case R_PPC64_TOC16_LO_DS:
9146 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9147 break;
9148
9149 default:
28942f62
AM		 9150 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9151 ppc_howto_init ();
b140b010 9152 info->callbacks->einfo
bc30df16 9153 (_("%P: %H: %s references "
b140b010
AM		 9154 "optimized away TOC entry\n"),
9155 ibfd, sec, rel->r_offset,
9156 ppc64_elf_howto_table[r_type]->name);
9157 bfd_set_error (bfd_error_bad_value);
9158 goto error_ret;
ba761f19
AM		 9159 }
9160 rel->r_addend = tocrel->r_addend;
9161 elf_section_data (sec)->relocs = relstart;
9162 continue;
9163 }
9164
9165 if (h != NULL || sym->st_value != 0)
9166 continue;
854b41e7
AM		 9167
9168 rel->r_addend -= skip[val >> 3];
9169 elf_section_data (sec)->relocs = relstart;
c5614fa4 9170 }
854b41e7
AM		 9171
9172 if (elf_section_data (sec)->relocs != relstart)
9173 free (relstart);
c5614fa4
AM		 9174 }
9175
9176 /* We shouldn't have local or global symbols defined in the TOC,
9177 but handle them anyway. */
df22d223
AM		 9178 if (local_syms != NULL)
9179 for (sym = local_syms;
9180 sym < local_syms + symtab_hdr->sh_info;
9181 ++sym)
9182 if (sym->st_value != 0
9183 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9184 {
9185 unsigned long i;
854b41e7 9186
df22d223
AM		 9187 if (sym->st_value > toc->rawsize)
9188 i = toc->rawsize >> 3;
9189 else
9190 i = sym->st_value >> 3;
854b41e7 9191
df22d223
AM		 9192 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9193 {
9194 if (local_toc_syms)
9195 (*_bfd_error_handler)
9196 (_("%s defined on removed toc entry"),
9197 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9198 do
9199 ++i;
9200 while ((skip[i] & (ref_from_discarded | can_optimize)));
9201 sym->st_value = (bfd_vma) i << 3;
9202 }
d62b3684 9203
df22d223
AM		 9204 sym->st_value -= skip[i];
9205 symtab_hdr->contents = (unsigned char *) local_syms;
9206 }
c5614fa4 9207
854b41e7 9208 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9209 if (toc_inf.global_toc_syms)
9210 {
9211 toc_inf.toc = toc;
9212 toc_inf.skip = skip;
9213 toc_inf.global_toc_syms = FALSE;
9214 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9215 &toc_inf);
9216 }
854b41e7
AM		 9217
9218 if (toc->reloc_count != 0)
9219 {
d4730f92 9220 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9221 Elf_Internal_Rela *wrel;
9222 bfd_size_type sz;
9223
854b41e7 9224 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9225 if (toc_relocs == NULL)
9226 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9227 info->keep_memory);
9228 if (toc_relocs == NULL)
9229 goto error_ret;
9230
425b145b
AM		 9231 wrel = toc_relocs;
9232 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9233 if ((skip[rel->r_offset >> 3]
9234 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9235 {
9236 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9237 wrel->r_info = rel->r_info;
9238 wrel->r_addend = rel->r_addend;
9239 ++wrel;
9240 }
9241 else if (!dec_dynrel_count (rel->r_info, toc, info,
9242 &local_syms, NULL, NULL))
9243 goto error_ret;
9244
425b145b
AM		 9245 elf_section_data (toc)->relocs = toc_relocs;
9246 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9247 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9248 sz = rel_hdr->sh_entsize;
9249 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9250 }
c5614fa4 9251 }
28be611c
AM		 9252 else if (toc_relocs != NULL
9253 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9254 free (toc_relocs);
c5614fa4
AM		 9255
9256 if (local_syms != NULL
9257 && symtab_hdr->contents != (unsigned char *) local_syms)
9258 {
9259 if (!info->keep_memory)
9260 free (local_syms);
9261 else
9262 symtab_hdr->contents = (unsigned char *) local_syms;
9263 }
9264 free (skip);
9265 }
9266
9267 return TRUE;
9268}
9269
1bbe0902
AM		 9270/* Return true iff input section I references the TOC using
9271 instructions limited to +/-32k offsets. */
9272
9273bfd_boolean
9274ppc64_elf_has_small_toc_reloc (asection *i)
9275{
9276 return (is_ppc64_elf (i->owner)
9277 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9278}
9279
927be08e
AM		 9280/* Allocate space for one GOT entry. */
9281
9282static void
9283allocate_got (struct elf_link_hash_entry *h,
9284 struct bfd_link_info *info,
9285 struct got_entry *gent)
9286{
9287 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9288 bfd_boolean dyn;
9289 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9290 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9291 ? 16 : 8);
9292 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9293 ? 2 : 1) * sizeof (Elf64_External_Rela);
9294 asection *got = ppc64_elf_tdata (gent->owner)->got;
9295
9296 gent->got.offset = got->size;
9297 got->size += entsize;
9298
9299 dyn = htab->elf.dynamic_sections_created;
19e08130 9300 if (h->type == STT_GNU_IFUNC)
927be08e 9301 {
33e44f2e 9302 htab->elf.irelplt->size += rentsize;
19e08130 9303 htab->got_reli_size += rentsize;
927be08e 9304 }
19e08130
AM		 9305 else if ((info->shared
9306 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9307 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9308 || h->root.type != bfd_link_hash_undefweak))
927be08e 9309 {
19e08130 9310 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9311 relgot->size += rentsize;
927be08e
AM		 9312 }
9313}
9314
7865406b
AM		 9315/* This function merges got entries in the same toc group. */
9316
9317static void
9318merge_got_entries (struct got_entry **pent)
9319{
9320 struct got_entry *ent, *ent2;
9321
9322 for (ent = *pent; ent != NULL; ent = ent->next)
9323 if (!ent->is_indirect)
9324 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9325 if (!ent2->is_indirect
9326 && ent2->addend == ent->addend
9327 && ent2->tls_type == ent->tls_type
9328 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9329 {
9330 ent2->is_indirect = TRUE;
9331 ent2->got.ent = ent;
9332 }
9333}
9334
65f38f15
AM		 9335/* Allocate space in .plt, .got and associated reloc sections for
9336 dynamic relocs. */
5bd4f169 9337
b34976b6 9338static bfd_boolean
4ce794b7 9339allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9340{
65f38f15
AM		 9341 struct bfd_link_info *info;
9342 struct ppc_link_hash_table *htab;
5bd4f169 9343 asection *s;
65f38f15 9344 struct ppc_link_hash_entry *eh;
6061a67d 9345 struct elf_dyn_relocs *p;
0b8bcf0d 9346 struct got_entry **pgent, *gent;
5bd4f169 9347
e92d460e 9348 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9349 return TRUE;
5bd4f169 9350
65f38f15
AM		 9351 info = (struct bfd_link_info *) inf;
9352 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9353 if (htab == NULL)
9354 return FALSE;
5bd4f169 9355
e054468f
AM		 9356 if ((htab->elf.dynamic_sections_created
9357 && h->dynindx != -1
9358 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9359 || h->type == STT_GNU_IFUNC)
5bd4f169 9360 {
411e1bfb
AM		 9361 struct plt_entry *pent;
9362 bfd_boolean doneone = FALSE;
9363 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9364 if (pent->plt.refcount > 0)
9365 {
25f23106
AM		 9366 if (!htab->elf.dynamic_sections_created
9367 || h->dynindx == -1)
e054468f 9368 {
33e44f2e 9369 s = htab->elf.iplt;
e054468f 9370 pent->plt.offset = s->size;
b9e5796b 9371 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9372 s = htab->elf.irelplt;
e054468f
AM		 9373 }
9374 else
9375 {
9376 /* If this is the first .plt entry, make room for the special
9377 first entry. */
33e44f2e 9378 s = htab->elf.splt;
e054468f 9379 if (s->size == 0)
b9e5796b 9380 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9381
9382 pent->plt.offset = s->size;
9383
9384 /* Make room for this entry. */
b9e5796b 9385 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9386
9387 /* Make room for the .glink code. */
9388 s = htab->glink;
9389 if (s->size == 0)
9390 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9391 if (htab->opd_abi)
9392 {
9393 /* We need bigger stubs past index 32767. */
9394 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9395 s->size += 4;
9396 s->size += 2*4;
9397 }
9398 else
e054468f 9399 s->size += 4;
e054468f
AM		 9400
9401 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9402 s = htab->elf.srelplt;
e054468f 9403 }
eea6121a 9404 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9405 doneone = TRUE;
9406 }
9407 else
9408 pent->plt.offset = (bfd_vma) -1;
9409 if (!doneone)
65f38f15 9410 {
411e1bfb 9411 h->plt.plist = NULL;
f5385ebf 9412 h->needs_plt = 0;
65f38f15
AM		 9413 }
9414 }
9415 else
9416 {
411e1bfb 9417 h->plt.plist = NULL;
f5385ebf 9418 h->needs_plt = 0;
65f38f15
AM		 9419 }
9420
951fd09b
AM		 9421 eh = (struct ppc_link_hash_entry *) h;
9422 /* Run through the TLS GD got entries first if we're changing them
9423 to TPREL. */
e7b938ca 9424 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9425 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9426 if (gent->got.refcount > 0
9427 && (gent->tls_type & TLS_GD) != 0)
9428 {
9429 /* This was a GD entry that has been converted to TPREL. If
9430 there happens to be a TPREL entry we can use that one. */
9431 struct got_entry *ent;
9432 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9433 if (ent->got.refcount > 0
9434 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9435 && ent->addend == gent->addend
9436 && ent->owner == gent->owner)
951fd09b
AM		 9437 {
9438 gent->got.refcount = 0;
9439 break;
9440 }
9441
9442 /* If not, then we'll be using our own TPREL entry. */
9443 if (gent->got.refcount != 0)
9444 gent->tls_type = TLS_TLS | TLS_TPREL;
9445 }
9446
7865406b
AM		 9447 /* Remove any list entry that won't generate a word in the GOT before
9448 we call merge_got_entries. Otherwise we risk merging to empty
9449 entries. */
0b8bcf0d
AM		 9450 pgent = &h->got.glist;
9451 while ((gent = *pgent) != NULL)
411e1bfb 9452 if (gent->got.refcount > 0)
7865406b
AM		 9453 {
9454 if ((gent->tls_type & TLS_LD) != 0
9455 && !h->def_dynamic)
9456 {
9457 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9458 *pgent = gent->next;
9459 }
9460 else
9461 pgent = &gent->next;
9462 }
9463 else
9464 *pgent = gent->next;
9465
9466 if (!htab->do_multi_toc)
9467 merge_got_entries (&h->got.glist);
9468
9469 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9470 if (!gent->is_indirect)
411e1bfb
AM		 9471 {
9472 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9473 Undefined weak syms won't yet be marked as dynamic,
9474 nor will all TLS symbols. */
411e1bfb 9475 if (h->dynindx == -1
b099ab9f 9476 && !h->forced_local
25f23106 9477 && h->type != STT_GNU_IFUNC
b099ab9f 9478 && htab->elf.dynamic_sections_created)
411e1bfb 9479 {
c152c796 9480 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9481 return FALSE;
9482 }
65f38f15 9483
0c8d6e5c 9484 if (!is_ppc64_elf (gent->owner))
927be08e 9485 abort ();
0ffa91dd 9486
927be08e 9487 allocate_got (h, info, gent);
411e1bfb 9488 }
65f38f15 9489
b099ab9f 9490 if (eh->dyn_relocs == NULL
25f23106 9491 || (!htab->elf.dynamic_sections_created
14b5f73f 9492 && h->type != STT_GNU_IFUNC))
b34976b6 9493 return TRUE;
65f38f15
AM		 9494
9495 /* In the shared -Bsymbolic case, discard space allocated for
9496 dynamic pc-relative relocs against symbols which turn out to be
9497 defined in regular objects. For the normal shared case, discard
9498 space for relocs that have become local due to symbol visibility
9499 changes. */
9500
9501 if (info->shared)
9502 {
9c7a29a3 9503 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9504 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9505 generated via assembly. We want calls to protected symbols to
9506 resolve directly to the function rather than going via the plt.
9507 If people want function pointer comparisons to work as expected
9508 then they should avoid writing weird assembly. */
09695f56 9509 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9510 {
6061a67d 9511 struct elf_dyn_relocs **pp;
65f38f15
AM		 9512
9513 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9514 {
65f38f15
AM		 9515 p->count -= p->pc_count;
9516 p->pc_count = 0;
9517 if (p->count == 0)
9518 *pp = p->next;
9519 else
9520 pp = &p->next;
5bd4f169 9521 }
65f38f15 9522 }
4e795f50
AM		 9523
9524 /* Also discard relocs on undefined weak syms with non-default
9525 visibility. */
cab87ef9
AM		 9526 if (eh->dyn_relocs != NULL
9527 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9528 {
9529 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9530 eh->dyn_relocs = NULL;
9531
9532 /* Make sure this symbol is output as a dynamic symbol.
9533 Undefined weak syms won't yet be marked as dynamic. */
9534 else if (h->dynindx == -1
9535 && !h->forced_local)
9536 {
9537 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9538 return FALSE;
9539 }
9540 }
65f38f15 9541 }
25f23106
AM		 9542 else if (h->type == STT_GNU_IFUNC)
9543 {
9544 if (!h->non_got_ref)
9545 eh->dyn_relocs = NULL;
9546 }
f4656909 9547 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9548 {
9549 /* For the non-shared case, discard space for relocs against
9550 symbols which turn out to need copy relocs or are not
9551 dynamic. */
9552
f5385ebf 9553 if (!h->non_got_ref
f5385ebf 9554 && !h->def_regular)
65f38f15
AM		 9555 {
9556 /* Make sure this symbol is output as a dynamic symbol.
9557 Undefined weak syms won't yet be marked as dynamic. */
9558 if (h->dynindx == -1
f5385ebf 9559 && !h->forced_local)
65f38f15 9560 {
c152c796 9561 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9562 return FALSE;
65f38f15
AM		 9563 }
9564
9565 /* If that succeeded, we know we'll be keeping all the
9566 relocs. */
9567 if (h->dynindx != -1)
9568 goto keep;
9569 }
9570
9571 eh->dyn_relocs = NULL;
9572
ec338859 9573 keep: ;
65f38f15
AM		 9574 }
9575
9576 /* Finally, allocate space. */
9577 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9578 {
9579 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9580 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9581 sreloc = htab->elf.irelplt;
eea6121a 9582 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9583 }
9584
b34976b6 9585 return TRUE;
65f38f15
AM		 9586}
9587
a345bc8d
AM		 9588/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9589 to set up space for global entry stubs. These are put in glink,
9590 after the branch table. */
65f38f15 9591
b34976b6 9592static bfd_boolean
a345bc8d 9593size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9594{
a345bc8d
AM		 9595 struct bfd_link_info *info;
9596 struct ppc_link_hash_table *htab;
9597 struct plt_entry *pent;
9598 asection *s;
65f38f15 9599
a345bc8d
AM		 9600 if (h->root.type == bfd_link_hash_indirect)
9601 return TRUE;
65f38f15 9602
a345bc8d
AM		 9603 if (!h->pointer_equality_needed)
9604 return TRUE;
65f38f15 9605
a345bc8d
AM		 9606 if (h->def_regular)
9607 return TRUE;
65f38f15 9608
a345bc8d
AM		 9609 info = inf;
9610 htab = ppc_hash_table (info);
9611 if (htab == NULL)
9612 return FALSE;
9613
9614 s = htab->glink;
9615 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9616 if (pent->plt.offset != (bfd_vma) -1
9617 && pent->addend == 0)
9618 {
afe397ea
AM		 9619 /* For ELFv2, if this symbol is not defined in a regular file
9620 and we are not generating a shared library or pie, then we
9621 need to define the symbol in the executable on a call stub.
9622 This is to avoid text relocations. */
a345bc8d 9623 s->size = (s->size + 15) & -16;
afe397ea
AM		 9624 h->root.u.def.section = s;
9625 h->root.u.def.value = s->size;
a345bc8d
AM		 9626 s->size += 16;
9627 break;
9628 }
9629 return TRUE;
9630}
9631
9632/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9633 read-only sections. */
9634
9635static bfd_boolean
9636maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9637{
9638 if (h->root.type == bfd_link_hash_indirect)
9639 return TRUE;
9640
9641 if (readonly_dynrelocs (h))
9642 {
9643 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9644
9645 /* Not an error, just cut short the traversal. */
9646 return FALSE;
65f38f15 9647 }
b34976b6 9648 return TRUE;
65f38f15
AM		 9649}
9650
9651/* Set the sizes of the dynamic sections. */
9652
b34976b6 9653static bfd_boolean
ee67d69a 9654ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9655 struct bfd_link_info *info)
65f38f15
AM		 9656{
9657 struct ppc_link_hash_table *htab;
9658 bfd *dynobj;
9659 asection *s;
b34976b6 9660 bfd_boolean relocs;
65f38f15 9661 bfd *ibfd;
7865406b 9662 struct got_entry *first_tlsld;
65f38f15
AM		 9663
9664 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9665 if (htab == NULL)
9666 return FALSE;
9667
65f38f15
AM		 9668 dynobj = htab->elf.dynobj;
9669 if (dynobj == NULL)
9670 abort ();
9671
9672 if (htab->elf.dynamic_sections_created)
9673 {
9674 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9675 if (info->executable)
65f38f15 9676 {
3d4d4302 9677 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9678 if (s == NULL)
9679 abort ();
eea6121a 9680 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9681 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9682 }
9683 }
9684
9685 /* Set up .got offsets for local syms, and space for local dynamic
9686 relocs. */
c72f2fb2 9687 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9688 {
411e1bfb
AM		 9689 struct got_entry **lgot_ents;
9690 struct got_entry **end_lgot_ents;
e054468f
AM		 9691 struct plt_entry **local_plt;
9692 struct plt_entry **end_local_plt;
f961d9dd 9693 unsigned char *lgot_masks;
65f38f15
AM		 9694 bfd_size_type locsymcount;
9695 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9696
0c8d6e5c 9697 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9698 continue;
9699
9700 for (s = ibfd->sections; s != NULL; s = s->next)
9701 {
19e08130 9702 struct ppc_dyn_relocs *p;
65f38f15 9703
6edfbbad 9704 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9705 {
ec338859
AM		 9706 if (!bfd_is_abs_section (p->sec)
9707 && bfd_is_abs_section (p->sec->output_section))
9708 {
9709 /* Input section has been discarded, either because
9710 it is a copy of a linkonce section or due to
9711 linker script /DISCARD/, so we'll be discarding
9712 the relocs too. */
9713 }
248866a8 9714 else if (p->count != 0)
ec338859 9715 {
19e08130
AM		 9716 asection *srel = elf_section_data (p->sec)->sreloc;
9717 if (p->ifunc)
33e44f2e 9718 srel = htab->elf.irelplt;
eea6121a 9719 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9720 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9721 info->flags |= DF_TEXTREL;
ec338859 9722 }
65f38f15
AM		 9723 }
9724 }
9725
411e1bfb
AM		 9726 lgot_ents = elf_local_got_ents (ibfd);
9727 if (!lgot_ents)
65f38f15
AM		 9728 continue;
9729
0ffa91dd 9730 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9731 locsymcount = symtab_hdr->sh_info;
411e1bfb 9732 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9733 local_plt = (struct plt_entry **) end_lgot_ents;
9734 end_local_plt = local_plt + locsymcount;
f961d9dd 9735 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9736 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9737 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9738 {
0b8bcf0d 9739 struct got_entry **pent, *ent;
411e1bfb 9740
0b8bcf0d
AM		 9741 pent = lgot_ents;
9742 while ((ent = *pent) != NULL)
411e1bfb
AM		 9743 if (ent->got.refcount > 0)
9744 {
e7b938ca 9745 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9746 {
927be08e 9747 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9748 *pent = ent->next;
411e1bfb
AM		 9749 }
9750 else
9751 {
19e08130
AM		 9752 unsigned int ent_size = 8;
9753 unsigned int rel_size = sizeof (Elf64_External_Rela);
9754
eea6121a 9755 ent->got.offset = s->size;
e7b938ca 9756 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9757 {
19e08130
AM		 9758 ent_size *= 2;
9759 rel_size *= 2;
9760 }
9761 s->size += ent_size;
9762 if ((*lgot_masks & PLT_IFUNC) != 0)
9763 {
33e44f2e 9764 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9765 htab->got_reli_size += rel_size;
9766 }
9767 else if (info->shared)
9768 {
9769 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9770 srel->size += rel_size;
927be08e 9771 }
0b8bcf0d 9772 pent = &ent->next;
411e1bfb
AM		 9773 }
9774 }
9775 else
0b8bcf0d 9776 *pent = ent->next;
65f38f15 9777 }
e054468f
AM		 9778
9779 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9780 for (; local_plt < end_local_plt; ++local_plt)
9781 {
9782 struct plt_entry *ent;
9783
9784 for (ent = *local_plt; ent != NULL; ent = ent->next)
9785 if (ent->plt.refcount > 0)
9786 {
33e44f2e 9787 s = htab->elf.iplt;
e054468f 9788 ent->plt.offset = s->size;
b9e5796b 9789 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9790
33e44f2e 9791 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9792 }
9793 else
9794 ent->plt.offset = (bfd_vma) -1;
9795 }
65f38f15
AM		 9796 }
9797
9798 /* Allocate global sym .plt and .got entries, and space for global
9799 sym dynamic relocs. */
4ce794b7 9800 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9801 /* Stash the end of glink branch table. */
9802 if (htab->glink != NULL)
9803 htab->glink->rawsize = htab->glink->size;
9804
9805 if (!htab->opd_abi && !info->shared)
9806 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9807
7865406b 9808 first_tlsld = NULL;
c72f2fb2 9809 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9810 {
7865406b
AM		 9811 struct got_entry *ent;
9812
0c8d6e5c 9813 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9814 continue;
9815
7865406b
AM		 9816 ent = ppc64_tlsld_got (ibfd);
9817 if (ent->got.refcount > 0)
102890f0 9818 {
7865406b 9819 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9820 {
7865406b
AM		 9821 ent->is_indirect = TRUE;
9822 ent->got.ent = first_tlsld;
9823 }
9824 else
9825 {
9826 if (first_tlsld == NULL)
9827 first_tlsld = ent;
9828 s = ppc64_elf_tdata (ibfd)->got;
9829 ent->got.offset = s->size;
9830 ent->owner = ibfd;
9831 s->size += 16;
9832 if (info->shared)
9833 {
9834 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9835 srel->size += sizeof (Elf64_External_Rela);
9836 }
102890f0
AM		 9837 }
9838 }
9839 else
7865406b 9840 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9841 }
9842
65f38f15
AM		 9843 /* We now have determined the sizes of the various dynamic sections.
9844 Allocate memory for them. */
b34976b6 9845 relocs = FALSE;
65f38f15
AM		 9846 for (s = dynobj->sections; s != NULL; s = s->next)
9847 {
9848 if ((s->flags & SEC_LINKER_CREATED) == 0)
9849 continue;
9850
4ce794b7 9851 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9852 /* These haven't been allocated yet; don't strip. */
9853 continue;
33e44f2e
AM		 9854 else if (s == htab->elf.sgot
9855 || s == htab->elf.splt
9856 || s == htab->elf.iplt
c456f082
AM		 9857 || s == htab->glink
9858 || s == htab->dynbss)
65f38f15
AM		 9859 {
9860 /* Strip this section if we don't need it; see the
9861 comment below. */
5bd4f169 9862 }
58d180e8
AM		 9863 else if (s == htab->glink_eh_frame)
9864 {
9865 if (!bfd_is_abs_section (s->output_section))
9866 /* Not sized yet. */
9867 continue;
9868 }
70cc837d 9869 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9870 {
c456f082 9871 if (s->size != 0)
5bd4f169 9872 {
33e44f2e 9873 if (s != htab->elf.srelplt)
b34976b6 9874 relocs = TRUE;
5bd4f169
AM		 9875
9876 /* We use the reloc_count field as a counter if we need
9877 to copy relocs into the output file. */
9878 s->reloc_count = 0;
9879 }
9880 }
65f38f15 9881 else
5bd4f169
AM		 9882 {
9883 /* It's not one of our sections, so don't allocate space. */
9884 continue;
9885 }
9886
eea6121a 9887 if (s->size == 0)
5bd4f169 9888 {
c456f082
AM		 9889 /* If we don't need this section, strip it from the
9890 output file. This is mostly to handle .rela.bss and
9891 .rela.plt. We must create both sections in
9892 create_dynamic_sections, because they must be created
9893 before the linker maps input sections to output
9894 sections. The linker does that before
9895 adjust_dynamic_symbol is called, and it is that
9896 function which decides whether anything needs to go
9897 into these sections. */
8423293d 9898 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9899 continue;
9900 }
9901
c456f082 9902 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9903 continue;
9904
65f38f15
AM		 9905 /* Allocate memory for the section contents. We use bfd_zalloc
9906 here in case unused entries are not reclaimed before the
9907 section's contents are written out. This should not happen,
411e1bfb
AM		 9908 but this way if it does we get a R_PPC64_NONE reloc in .rela
9909 sections instead of garbage.
9910 We also rely on the section contents being zero when writing
9911 the GOT. */
eea6121a 9912 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9913 if (s->contents == NULL)
b34976b6 9914 return FALSE;
5bd4f169
AM		 9915 }
9916
c72f2fb2 9917 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9918 {
0c8d6e5c 9919 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9920 continue;
9921
e717da7e 9922 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9923 if (s != NULL && s != htab->elf.sgot)
e717da7e 9924 {
eea6121a 9925 if (s->size == 0)
8423293d 9926 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9927 else
9928 {
eea6121a 9929 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9930 if (s->contents == NULL)
9931 return FALSE;
9932 }
9933 }
9934 s = ppc64_elf_tdata (ibfd)->relgot;
9935 if (s != NULL)
9936 {
eea6121a 9937 if (s->size == 0)
8423293d 9938 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9939 else
9940 {
eea6121a 9941 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9942 if (s->contents == NULL)
9943 return FALSE;
9944 relocs = TRUE;
9945 s->reloc_count = 0;
9946 }
9947 }
9948 }
9949
e86ce104 9950 if (htab->elf.dynamic_sections_created)
5bd4f169 9951 {
e8910a83
AM		 9952 bfd_boolean tls_opt;
9953
5bd4f169
AM		 9954 /* Add some entries to the .dynamic section. We fill in the
9955 values later, in ppc64_elf_finish_dynamic_sections, but we
9956 must add the entries now so that we get the correct size for
9957 the .dynamic section. The DT_DEBUG entry is filled in by the
9958 dynamic linker and used by the debugger. */
dc810e39 9959#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9960 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9961
36af4a4e 9962 if (info->executable)
5bd4f169 9963 {
dc810e39 9964 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9965 return FALSE;
5bd4f169
AM		 9966 }
9967
33e44f2e 9968 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 9969 {
dc810e39
AM		 9970 if (!add_dynamic_entry (DT_PLTGOT, 0)
9971 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9972 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 9973 || !add_dynamic_entry (DT_JMPREL, 0)
9974 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 9975 return FALSE;
5bd4f169
AM		 9976 }
9977
ee67d69a 9978 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 9979 {
9980 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9981 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 9982 return FALSE;
19397422
AM		 9983 }
9984
e7d1c40c 9985 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 9986 && htab->tls_get_addr_fd != NULL
9987 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9988 if (tls_opt || !htab->opd_abi)
9989 {
9990 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9991 return FALSE;
9992 }
a7f2871e 9993
5bd4f169
AM		 9994 if (relocs)
9995 {
dc810e39
AM		 9996 if (!add_dynamic_entry (DT_RELA, 0)
9997 || !add_dynamic_entry (DT_RELASZ, 0)
9998 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 9999 return FALSE;
5bd4f169 10000
65f38f15
AM		 10001 /* If any dynamic relocs apply to a read-only section,
10002 then we need a DT_TEXTREL entry. */
248866a8 10003 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10004 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10005
65f38f15 10006 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10007 {
65f38f15 10008 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10009 return FALSE;
5bd4f169 10010 }
5bd4f169 10011 }
5bd4f169 10012 }
65f38f15 10013#undef add_dynamic_entry
5bd4f169 10014
b34976b6 10015 return TRUE;
5bd4f169
AM		 10016}
10017
a345bc8d
AM		 10018/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10019
10020static bfd_boolean
10021ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10022{
10023 if (h->plt.plist != NULL
10024 && !h->def_regular
10025 && !h->pointer_equality_needed)
10026 return FALSE;
10027
10028 return _bfd_elf_hash_symbol (h);
10029}
10030
721956f4 10031/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10032
4ce794b7
AM		 10033static inline enum ppc_stub_type
10034ppc_type_of_stub (asection *input_sec,
10035 const Elf_Internal_Rela *rel,
10036 struct ppc_link_hash_entry **hash,
e054468f 10037 struct plt_entry **plt_ent,
6911b7dc
AM		 10038 bfd_vma destination,
10039 unsigned long local_off)
5bd4f169 10040{
721956f4
AM		 10041 struct ppc_link_hash_entry *h = *hash;
10042 bfd_vma location;
10043 bfd_vma branch_offset;
10044 bfd_vma max_branch_offset;
4ce794b7 10045 enum elf_ppc64_reloc_type r_type;
5bd4f169 10046
721956f4
AM		 10047 if (h != NULL)
10048 {
e054468f 10049 struct plt_entry *ent;
7fe2b9a6 10050 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10051 if (h->oh != NULL
10052 && h->oh->is_func_descriptor)
7b8f6675
AM		 10053 {
10054 fdh = ppc_follow_link (h->oh);
10055 *hash = fdh;
10056 }
8387904d 10057
e054468f
AM		 10058 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10059 if (ent->addend == rel->r_addend
10060 && ent->plt.offset != (bfd_vma) -1)
10061 {
e054468f
AM		 10062 *plt_ent = ent;
10063 return ppc_stub_plt_call;
10064 }
5bd4f169 10065
7fe2b9a6
AM		 10066 /* Here, we know we don't have a plt entry. If we don't have a
10067 either a defined function descriptor or a defined entry symbol
10068 in a regular object file, then it is pointless trying to make
10069 any other type of stub. */
854b41e7
AM		 10070 if (!is_static_defined (&fdh->elf)
10071 && !is_static_defined (&h->elf))
721956f4 10072 return ppc_stub_none;
5d1634d7 10073 }
e054468f
AM		 10074 else if (elf_local_got_ents (input_sec->owner) != NULL)
10075 {
10076 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10077 struct plt_entry **local_plt = (struct plt_entry **)
10078 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10079 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10080
10081 if (local_plt[r_symndx] != NULL)
10082 {
10083 struct plt_entry *ent;
10084
10085 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10086 if (ent->addend == rel->r_addend
10087 && ent->plt.offset != (bfd_vma) -1)
10088 {
10089 *plt_ent = ent;
10090 return ppc_stub_plt_call;
10091 }
10092 }
10093 }
5d1634d7 10094
721956f4
AM		 10095 /* Determine where the call point is. */
10096 location = (input_sec->output_offset
10097 + input_sec->output_section->vma
10098 + rel->r_offset);
5d1634d7 10099
721956f4
AM		 10100 branch_offset = destination - location;
10101 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10102
721956f4
AM		 10103 /* Determine if a long branch stub is needed. */
10104 max_branch_offset = 1 << 25;
4ce794b7 10105 if (r_type != R_PPC64_REL24)
721956f4 10106 max_branch_offset = 1 << 15;
5d1634d7 10107
6911b7dc 10108 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10109 /* We need a stub. Figure out whether a long_branch or plt_branch
10110 is needed later. */
10111 return ppc_stub_long_branch;
5d1634d7 10112
721956f4 10113 return ppc_stub_none;
5d1634d7
AM		 10114}
10115
794e51c0
AM		 10116/* With power7 weakly ordered memory model, it is possible for ld.so
10117 to update a plt entry in one thread and have another thread see a
10118 stale zero toc entry. To avoid this we need some sort of acquire
10119 barrier in the call stub. One solution is to make the load of the
10120 toc word seem to appear to depend on the load of the function entry
10121 word. Another solution is to test for r2 being zero, and branch to
10122 the appropriate glink entry if so.
10123
10124 . fake dep barrier compare
71a39c98
AM		 10125 . ld 12,xxx(2) ld 12,xxx(2)
10126 . mtctr 12 mtctr 12
10127 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10128 . add 2,2,11 cmpldi 2,0
10129 . ld 2,xxx+8(2) bnectr+
10130 . bctr b <glink_entry>
10131
10132 The solution involving the compare turns out to be faster, so
10133 that's what we use unless the branch won't reach. */
10134
10135#define ALWAYS_USE_FAKE_DEP 0
10136#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10137
5d1634d7
AM		 10138#define PPC_LO(v) ((v) & 0xffff)
10139#define PPC_HI(v) (((v) >> 16) & 0xffff)
10140#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10141
794e51c0
AM		 10142static inline unsigned int
10143plt_stub_size (struct ppc_link_hash_table *htab,
10144 struct ppc_stub_hash_entry *stub_entry,
10145 bfd_vma off)
10146{
b9e5796b
AM		 10147 unsigned size = 12;
10148
10149 if (ALWAYS_EMIT_R2SAVE
10150 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10151 size += 4;
10152 if (PPC_HA (off) != 0)
794e51c0 10153 size += 4;
b9e5796b
AM		 10154 if (htab->opd_abi)
10155 {
10156 size += 4;
e7d1c40c 10157 if (htab->params->plt_static_chain)
b9e5796b 10158 size += 4;
e7d1c40c 10159 if (htab->params->plt_thread_safe)
b9e5796b 10160 size += 8;
e7d1c40c 10161 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10162 size += 4;
10163 }
794e51c0
AM		 10164 if (stub_entry->h != NULL
10165 && (stub_entry->h == htab->tls_get_addr_fd
10166 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10167 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10168 size += 13 * 4;
10169 return size;
10170}
10171
10172/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10173 then return the padding needed to do so. */
10174static inline unsigned int
10175plt_stub_pad (struct ppc_link_hash_table *htab,
10176 struct ppc_stub_hash_entry *stub_entry,
10177 bfd_vma plt_off)
10178{
e7d1c40c 10179 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0
AM		 10180 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10181 bfd_vma stub_off = stub_entry->stub_sec->size;
10182
10183 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10184 > (stub_size & -stub_align))
10185 return stub_align - (stub_off & (stub_align - 1));
10186 return 0;
10187}
10188
10189/* Build a .plt call stub. */
10190
10191static inline bfd_byte *
10192build_plt_stub (struct ppc_link_hash_table *htab,
10193 struct ppc_stub_hash_entry *stub_entry,
10194 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10195{
e7d1c40c 10196 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10197 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c
AM		 10198 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10199 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
794e51c0
AM		 10200 bfd_boolean use_fake_dep = plt_thread_safe;
10201 bfd_vma cmp_branch_off = 0;
10202
10203 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10204 && plt_load_toc
794e51c0
AM		 10205 && plt_thread_safe
10206 && !(stub_entry->h != NULL
10207 && (stub_entry->h == htab->tls_get_addr_fd
10208 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10209 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10210 {
10211 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10212 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10213 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10214 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10215 bfd_vma to, from;
10216
68d62958
AM		 10217 if (pltindex > 32768)
10218 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10219 to = (glinkoff
10220 + htab->glink->output_offset
10221 + htab->glink->output_section->vma);
10222 from = (p - stub_entry->stub_sec->contents
10223 + 4 * (ALWAYS_EMIT_R2SAVE
10224 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10225 + 4 * (PPC_HA (offset) != 0)
10226 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10227 != PPC_HA (offset))
10228 + 4 * (plt_static_chain != 0)
10229 + 20
10230 + stub_entry->stub_sec->output_offset
10231 + stub_entry->stub_sec->output_section->vma);
10232 cmp_branch_off = to - from;
10233 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10234 }
10235
ac2df442
AM		 10236 if (PPC_HA (offset) != 0)
10237 {
176a0d42
AM		 10238 if (r != NULL)
10239 {
794e51c0
AM		 10240 if (ALWAYS_EMIT_R2SAVE
10241 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10242 r[0].r_offset += 4;
176a0d42 10243 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10244 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10245 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10246 r[1].r_addend = r[0].r_addend;
b9e5796b 10247 if (plt_load_toc)
176a0d42 10248 {
b9e5796b 10249 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10250 {
b9e5796b
AM		 10251 r[2].r_offset = r[1].r_offset + 4;
10252 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10253 r[2].r_addend = r[0].r_addend;
10254 }
10255 else
10256 {
10257 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10258 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10259 r[2].r_addend = r[0].r_addend + 8;
10260 if (plt_static_chain)
10261 {
10262 r[3].r_offset = r[2].r_offset + 4;
10263 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10264 r[3].r_addend = r[0].r_addend + 16;
10265 }
c7131b65 10266 }
176a0d42
AM		 10267 }
10268 }
794e51c0
AM		 10269 if (ALWAYS_EMIT_R2SAVE
10270 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10271 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10272 if (plt_load_toc)
10273 {
10274 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10275 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10276 }
10277 else
10278 {
10279 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10280 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10281 }
b9e5796b
AM		 10282 if (plt_load_toc
10283 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10284 {
71a39c98 10285 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10286 offset = 0;
10287 }
71a39c98 10288 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10289 if (plt_load_toc)
794e51c0 10290 {
b9e5796b
AM		 10291 if (use_fake_dep)
10292 {
10293 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10294 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10295 }
10296 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10297 if (plt_static_chain)
10298 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10299 }
ac2df442
AM		 10300 }
10301 else
10302 {
176a0d42
AM		 10303 if (r != NULL)
10304 {
794e51c0
AM		 10305 if (ALWAYS_EMIT_R2SAVE
10306 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10307 r[0].r_offset += 4;
176a0d42 10308 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10309 if (plt_load_toc)
176a0d42 10310 {
b9e5796b 10311 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10312 {
b9e5796b
AM		 10313 r[1].r_offset = r[0].r_offset + 4;
10314 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10315 r[1].r_addend = r[0].r_addend;
10316 }
10317 else
10318 {
10319 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10320 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10321 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10322 if (plt_static_chain)
10323 {
10324 r[2].r_offset = r[1].r_offset + 4;
10325 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10326 r[2].r_addend = r[0].r_addend + 8;
10327 }
c7131b65 10328 }
176a0d42
AM		 10329 }
10330 }
794e51c0
AM		 10331 if (ALWAYS_EMIT_R2SAVE
10332 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10333 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10334 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10335 if (plt_load_toc
10336 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10337 {
10338 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10339 offset = 0;
10340 }
71a39c98 10341 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10342 if (plt_load_toc)
794e51c0 10343 {
b9e5796b
AM		 10344 if (use_fake_dep)
10345 {
10346 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10347 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10348 }
10349 if (plt_static_chain)
10350 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10351 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10352 }
ac2df442 10353 }
b9e5796b 10354 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10355 {
10356 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10357 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10358 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10359 }
10360 else
10361 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10362 return p;
10363}
10364
a7f2871e
AM		 10365/* Build a special .plt call stub for __tls_get_addr. */
10366
10367#define LD_R11_0R3 0xe9630000
10368#define LD_R12_0R3 0xe9830000
10369#define MR_R0_R3 0x7c601b78
10370#define CMPDI_R11_0 0x2c2b0000
10371#define ADD_R3_R12_R13 0x7c6c6a14
10372#define BEQLR 0x4d820020
10373#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10374#define STD_R11_0R1 0xf9610000
10375#define BCTRL 0x4e800421
10376#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10377#define MTLR_R11 0x7d6803a6
10378
10379static inline bfd_byte *
794e51c0
AM		 10380build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10381 struct ppc_stub_hash_entry *stub_entry,
10382 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10383{
e7d1c40c 10384 bfd *obfd = htab->params->stub_bfd;
794e51c0 10385
a7f2871e
AM		 10386 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10387 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10388 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10389 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10390 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10391 bfd_put_32 (obfd, BEQLR, p), p += 4;
10392 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10393 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10394 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10395
10396 if (r != NULL)
10397 r[0].r_offset += 9 * 4;
794e51c0 10398 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10399 bfd_put_32 (obfd, BCTRL, p - 4);
10400
a078d95a
AM		 10401 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10402 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
a7f2871e
AM		 10403 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10404 bfd_put_32 (obfd, BLR, p), p += 4;
10405
10406 return p;
10407}
10408
176a0d42
AM		 10409static Elf_Internal_Rela *
10410get_relocs (asection *sec, int count)
10411{
10412 Elf_Internal_Rela *relocs;
10413 struct bfd_elf_section_data *elfsec_data;
10414
10415 elfsec_data = elf_section_data (sec);
10416 relocs = elfsec_data->relocs;
10417 if (relocs == NULL)
10418 {
10419 bfd_size_type relsize;
10420 relsize = sec->reloc_count * sizeof (*relocs);
10421 relocs = bfd_alloc (sec->owner, relsize);
10422 if (relocs == NULL)
10423 return NULL;
10424 elfsec_data->relocs = relocs;
d4730f92
BS		 10425 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10426 sizeof (Elf_Internal_Shdr));
10427 if (elfsec_data->rela.hdr == NULL)
10428 return NULL;
10429 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10430 * sizeof (Elf64_External_Rela));
10431 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10432 sec->reloc_count = 0;
10433 }
10434 relocs += sec->reloc_count;
10435 sec->reloc_count += count;
10436 return relocs;
10437}
10438
aa374f67 10439static bfd_vma
25f53a85 10440get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10441 struct ppc_stub_hash_entry *stub_entry)
10442{
25f53a85 10443 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM		 10444 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10445
10446 if (r2off == 0)
10447 {
10448 /* Support linking -R objects. Get the toc pointer from the
10449 opd entry. */
10450 char buf[8];
b9e5796b
AM		 10451 if (!htab->opd_abi)
10452 return r2off;
aa374f67
AM		 10453 asection *opd = stub_entry->h->elf.root.u.def.section;
10454 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10455
10456 if (strcmp (opd->name, ".opd") != 0
10457 || opd->reloc_count != 0)
10458 {
bc30df16 10459 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10460 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10461 bfd_set_error (bfd_error_bad_value);
10462 return 0;
10463 }
10464 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10465 return 0;
10466 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10467 r2off -= elf_gp (info->output_bfd);
aa374f67
AM		 10468 }
10469 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10470 return r2off;
10471}
10472
b34976b6 10473static bfd_boolean
4ce794b7 10474ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10475{
721956f4
AM		 10476 struct ppc_stub_hash_entry *stub_entry;
10477 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10478 struct bfd_link_info *info;
10479 struct ppc_link_hash_table *htab;
721956f4
AM		 10480 bfd_byte *loc;
10481 bfd_byte *p;
ee75fd95 10482 bfd_vma dest, off;
721956f4 10483 int size;
176a0d42 10484 Elf_Internal_Rela *r;
e054468f 10485 asection *plt;
5d1634d7 10486
721956f4
AM		 10487 /* Massage our args to the form they really have. */
10488 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10489 info = in_arg;
5d1634d7 10490
5d1634d7 10491 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10492 if (htab == NULL)
10493 return FALSE;
5d1634d7 10494
721956f4 10495 /* Make a note of the offset within the stubs for this entry. */
eea6121a 10496 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 10497 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 10498
4ce794b7 10499 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10500 switch (stub_entry->stub_type)
5d1634d7 10501 {
721956f4 10502 case ppc_stub_long_branch:
ad8e1ba5 10503 case ppc_stub_long_branch_r2off:
721956f4 10504 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10505 dest = (stub_entry->target_value
10506 + stub_entry->target_section->output_offset
10507 + stub_entry->target_section->output_section->vma);
10508 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10509 off = dest;
5d1634d7 10510
721956f4
AM		 10511 /* And this is where we are coming from. */
10512 off -= (stub_entry->stub_offset
97b639ba
AM		 10513 + stub_entry->stub_sec->output_offset
10514 + stub_entry->stub_sec->output_section->vma);
e86ce104 10515
ac2df442
AM		 10516 size = 4;
10517 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10518 {
25f53a85 10519 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10520
aa374f67
AM		 10521 if (r2off == 0)
10522 {
10523 htab->stub_error = TRUE;
10524 return FALSE;
10525 }
e7d1c40c 10526 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10527 loc += 4;
ac2df442
AM		 10528 size = 12;
10529 if (PPC_HA (r2off) != 0)
10530 {
10531 size = 16;
e7d1c40c
AM		 10532 bfd_put_32 (htab->params->stub_bfd,
10533 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10534 loc += 4;
10535 }
e7d1c40c 10536 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10537 loc += 4;
ac2df442 10538 off -= size - 4;
ad8e1ba5 10539 }
e7d1c40c 10540 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10541
5c3dead3
AM		 10542 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10543 {
bc30df16
AM		 10544 info->callbacks->einfo
10545 (_("%P: long branch stub `%s' offset overflow\n"),
10546 stub_entry->root.string);
5c3dead3
AM		 10547 htab->stub_error = TRUE;
10548 return FALSE;
10549 }
ee75fd95
AM		 10550
10551 if (info->emitrelocations)
10552 {
176a0d42
AM		 10553 r = get_relocs (stub_entry->stub_sec, 1);
10554 if (r == NULL)
10555 return FALSE;
ee75fd95
AM		 10556 r->r_offset = loc - stub_entry->stub_sec->contents;
10557 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10558 r->r_addend = dest;
10559 if (stub_entry->h != NULL)
10560 {
10561 struct elf_link_hash_entry **hashes;
10562 unsigned long symndx;
10563 struct ppc_link_hash_entry *h;
10564
e7d1c40c 10565 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10566 if (hashes == NULL)
10567 {
10568 bfd_size_type hsize;
10569
10570 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10571 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10572 if (hashes == NULL)
10573 return FALSE;
e7d1c40c 10574 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10575 htab->stub_globals = 1;
10576 }
10577 symndx = htab->stub_globals++;
10578 h = stub_entry->h;
10579 hashes[symndx] = &h->elf;
10580 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10581 if (h->oh != NULL && h->oh->is_func)
b31867b6 10582 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10583 if (h->elf.root.u.def.section != stub_entry->target_section)
10584 /* H is an opd symbol. The addend must be zero. */
10585 r->r_addend = 0;
10586 else
10587 {
10588 off = (h->elf.root.u.def.value
10589 + h->elf.root.u.def.section->output_offset
10590 + h->elf.root.u.def.section->output_section->vma);
10591 r->r_addend -= off;
10592 }
10593 }
10594 }
721956f4 10595 break;
e86ce104 10596
721956f4 10597 case ppc_stub_plt_branch:
ad8e1ba5 10598 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10599 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10600 stub_entry->root.string + 9,
b34976b6 10601 FALSE, FALSE);
721956f4
AM		 10602 if (br_entry == NULL)
10603 {
8de848d8 10604 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10605 stub_entry->root.string);
b34976b6
AM		 10606 htab->stub_error = TRUE;
10607 return FALSE;
721956f4
AM		 10608 }
10609
176a0d42
AM		 10610 dest = (stub_entry->target_value
10611 + stub_entry->target_section->output_offset
10612 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10613 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10614 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10615
176a0d42 10616 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10617 htab->brlt->contents + br_entry->offset);
721956f4 10618
f94498ff 10619 if (br_entry->iter == htab->stub_iteration)
721956f4 10620 {
f94498ff 10621 br_entry->iter = 0;
84f5d08e 10622
f94498ff 10623 if (htab->relbrlt != NULL)
84f5d08e 10624 {
f94498ff
AM		 10625 /* Create a reloc for the branch lookup table entry. */
10626 Elf_Internal_Rela rela;
10627 bfd_byte *rl;
10628
10629 rela.r_offset = (br_entry->offset
10630 + htab->brlt->output_offset
10631 + htab->brlt->output_section->vma);
10632 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10633 rela.r_addend = dest;
f94498ff
AM		 10634
10635 rl = htab->relbrlt->contents;
10636 rl += (htab->relbrlt->reloc_count++
10637 * sizeof (Elf64_External_Rela));
10638 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10639 }
10640 else if (info->emitrelocations)
10641 {
176a0d42
AM		 10642 r = get_relocs (htab->brlt, 1);
10643 if (r == NULL)
10644 return FALSE;
10645 /* brlt, being SEC_LINKER_CREATED does not go through the
10646 normal reloc processing. Symbols and offsets are not
10647 translated from input file to output file form, so
10648 set up the offset per the output file. */
f94498ff
AM		 10649 r->r_offset = (br_entry->offset
10650 + htab->brlt->output_offset
10651 + htab->brlt->output_section->vma);
10652 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10653 r->r_addend = dest;
84f5d08e 10654 }
84f5d08e 10655 }
721956f4 10656
176a0d42
AM		 10657 dest = (br_entry->offset
10658 + htab->brlt->output_offset
10659 + htab->brlt->output_section->vma);
10660
10661 off = (dest
4ce794b7 10662 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10663 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10664
ad8e1ba5 10665 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10666 {
25f53a85 10667 info->callbacks->einfo
bc30df16 10668 (_("%P: linkage table error against `%T'\n"),
721956f4 10669 stub_entry->root.string);
5d1634d7 10670 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10671 htab->stub_error = TRUE;
10672 return FALSE;
5d1634d7 10673 }
41bd81ab 10674
176a0d42
AM		 10675 if (info->emitrelocations)
10676 {
10677 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10678 if (r == NULL)
10679 return FALSE;
10680 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10681 if (bfd_big_endian (info->output_bfd))
10682 r[0].r_offset += 2;
00f412ee 10683 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10684 r[0].r_offset += 4;
10685 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10686 r[0].r_addend = dest;
10687 if (PPC_HA (off) != 0)
10688 {
10689 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10690 r[1].r_offset = r[0].r_offset + 4;
10691 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10692 r[1].r_addend = r[0].r_addend;
10693 }
10694 }
10695
00f412ee 10696 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10697 {
176a0d42 10698 if (PPC_HA (off) != 0)
ac2df442
AM		 10699 {
10700 size = 16;
e7d1c40c 10701 bfd_put_32 (htab->params->stub_bfd,
397998fc 10702 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10703 loc += 4;
e7d1c40c 10704 bfd_put_32 (htab->params->stub_bfd,
397998fc 10705 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10706 }
10707 else
10708 {
10709 size = 12;
e7d1c40c
AM		 10710 bfd_put_32 (htab->params->stub_bfd,
10711 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10712 }
ad8e1ba5
AM		 10713 }
10714 else
10715 {
25f53a85 10716 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10717
00f412ee 10718 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10719 {
10720 htab->stub_error = TRUE;
10721 return FALSE;
10722 }
ad8e1ba5 10723
e7d1c40c 10724 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10725 loc += 4;
00f412ee 10726 size = 16;
176a0d42 10727 if (PPC_HA (off) != 0)
ac2df442
AM		 10728 {
10729 size += 4;
e7d1c40c 10730 bfd_put_32 (htab->params->stub_bfd,
397998fc 10731 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10732 loc += 4;
e7d1c40c 10733 bfd_put_32 (htab->params->stub_bfd,
397998fc 10734 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10735 }
10736 else
e7d1c40c 10737 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10738
10739 if (PPC_HA (r2off) != 0)
10740 {
10741 size += 4;
00f412ee 10742 loc += 4;
e7d1c40c
AM		 10743 bfd_put_32 (htab->params->stub_bfd,
10744 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10745 }
10746 if (PPC_LO (r2off) != 0)
10747 {
10748 size += 4;
ac2df442 10749 loc += 4;
e7d1c40c
AM		 10750 bfd_put_32 (htab->params->stub_bfd,
10751 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10752 }
ad8e1ba5
AM		 10753 }
10754 loc += 4;
e7d1c40c 10755 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10756 loc += 4;
e7d1c40c 10757 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10758 break;
5d1634d7 10759
721956f4 10760 case ppc_stub_plt_call:
794e51c0 10761 case ppc_stub_plt_call_r2save:
e054468f 10762 if (stub_entry->h != NULL
b31867b6
AM		 10763 && stub_entry->h->is_func_descriptor
10764 && stub_entry->h->oh != NULL)
c862ae31 10765 {
b31867b6
AM		 10766 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10767
10768 /* If the old-ABI "dot-symbol" is undefined make it weak so
10769 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10770 FIXME: We used to define the symbol on one of the call
10771 stubs instead, which is why we test symbol section id
10772 against htab->top_id in various places. Likely all
10773 these checks could now disappear. */
10774 if (fh->elf.root.type == bfd_link_hash_undefined)
10775 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10776 /* Stop undo_symbol_twiddle changing it back to undefined. */
10777 fh->was_undefined = 0;
c862ae31
AM		 10778 }
10779
721956f4 10780 /* Now build the stub. */
e054468f 10781 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10782 if (dest >= (bfd_vma) -2)
721956f4
AM		 10783 abort ();
10784
33e44f2e 10785 plt = htab->elf.splt;
25f23106
AM		 10786 if (!htab->elf.dynamic_sections_created
10787 || stub_entry->h == NULL
10788 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10789 plt = htab->elf.iplt;
e054468f
AM		 10790
10791 dest += plt->output_offset + plt->output_section->vma;
10792
10793 if (stub_entry->h == NULL
10794 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10795 {
10796 Elf_Internal_Rela rela;
10797 bfd_byte *rl;
10798
10799 rela.r_offset = dest;
ee67d69a
AM		 10800 if (htab->opd_abi)
10801 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10802 else
10803 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10804 rela.r_addend = (stub_entry->target_value
10805 + stub_entry->target_section->output_offset
10806 + stub_entry->target_section->output_section->vma);
10807
33e44f2e
AM		 10808 rl = (htab->elf.irelplt->contents
10809 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10810 * sizeof (Elf64_External_Rela)));
10811 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10812 stub_entry->plt_ent->plt.offset |= 1;
10813 }
176a0d42
AM		 10814
10815 off = (dest
e054468f 10816 - elf_gp (plt->output_section->owner)
176a0d42 10817 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10818
ad8e1ba5 10819 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10820 {
25f53a85 10821 info->callbacks->einfo
bc30df16 10822 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10823 stub_entry->h != NULL
10824 ? stub_entry->h->elf.root.root.string
10825 : "<local sym>");
721956f4 10826 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10827 htab->stub_error = TRUE;
10828 return FALSE;
721956f4
AM		 10829 }
10830
e7d1c40c 10831 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10832 {
10833 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10834
10835 stub_entry->stub_sec->size += pad;
10836 stub_entry->stub_offset = stub_entry->stub_sec->size;
10837 loc += pad;
10838 }
10839
176a0d42
AM		 10840 r = NULL;
10841 if (info->emitrelocations)
10842 {
10843 r = get_relocs (stub_entry->stub_sec,
3ba720c7
AM		 10844 ((PPC_HA (off) != 0)
10845 + (htab->opd_abi
e7d1c40c 10846 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10847 && PPC_HA (off + 16) == PPC_HA (off))
10848 : 1)));
176a0d42
AM		 10849 if (r == NULL)
10850 return FALSE;
10851 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10852 if (bfd_big_endian (info->output_bfd))
10853 r[0].r_offset += 2;
176a0d42
AM		 10854 r[0].r_addend = dest;
10855 }
a7f2871e
AM		 10856 if (stub_entry->h != NULL
10857 && (stub_entry->h == htab->tls_get_addr_fd
10858 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10859 && !htab->params->no_tls_get_addr_opt)
794e51c0 10860 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10861 else
794e51c0 10862 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10863 size = p - loc;
10864 break;
10865
10866 default:
10867 BFD_FAIL ();
b34976b6 10868 return FALSE;
721956f4
AM		 10869 }
10870
eea6121a 10871 stub_entry->stub_sec->size += size;
97b639ba 10872
e7d1c40c 10873 if (htab->params->emit_stub_syms)
97b639ba
AM		 10874 {
10875 struct elf_link_hash_entry *h;
ee75fd95
AM		 10876 size_t len1, len2;
10877 char *name;
10878 const char *const stub_str[] = { "long_branch",
10879 "long_branch_r2off",
10880 "plt_branch",
10881 "plt_branch_r2off",
794e51c0 10882 "plt_call",
ee75fd95
AM		 10883 "plt_call" };
10884
10885 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10886 len2 = strlen (stub_entry->root.string);
10887 name = bfd_malloc (len1 + len2 + 2);
10888 if (name == NULL)
10889 return FALSE;
10890 memcpy (name, stub_entry->root.string, 9);
10891 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10892 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10893 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10894 if (h == NULL)
10895 return FALSE;
10896 if (h->root.type == bfd_link_hash_new)
10897 {
10898 h->root.type = bfd_link_hash_defined;
10899 h->root.u.def.section = stub_entry->stub_sec;
10900 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10901 h->ref_regular = 1;
10902 h->def_regular = 1;
10903 h->ref_regular_nonweak = 1;
10904 h->forced_local = 1;
10905 h->non_elf = 0;
97b639ba
AM		 10906 }
10907 }
10908
b34976b6 10909 return TRUE;
721956f4
AM		 10910}
10911
10912/* As above, but don't actually build the stub. Just bump offset so
10913 we know stub section sizes, and select plt_branch stubs where
10914 long_branch stubs won't do. */
10915
b34976b6 10916static bfd_boolean
4ce794b7 10917ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10918{
10919 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10920 struct bfd_link_info *info;
721956f4
AM		 10921 struct ppc_link_hash_table *htab;
10922 bfd_vma off;
10923 int size;
10924
10925 /* Massage our args to the form they really have. */
10926 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 10927 info = in_arg;
10928
10929 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10930 if (htab == NULL)
10931 return FALSE;
721956f4 10932
794e51c0
AM		 10933 if (stub_entry->stub_type == ppc_stub_plt_call
10934 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10935 {
e054468f
AM		 10936 asection *plt;
10937 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10938 if (off >= (bfd_vma) -2)
411e1bfb 10939 abort ();
33e44f2e 10940 plt = htab->elf.splt;
25f23106
AM		 10941 if (!htab->elf.dynamic_sections_created
10942 || stub_entry->h == NULL
10943 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10944 plt = htab->elf.iplt;
e054468f
AM		 10945 off += (plt->output_offset
10946 + plt->output_section->vma
10947 - elf_gp (plt->output_section->owner)
ad8e1ba5 10948 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10949
794e51c0 10950 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 10951 if (htab->params->plt_stub_align)
794e51c0 10952 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 10953 if (info->emitrelocations)
10954 {
10955 stub_entry->stub_sec->reloc_count
b9e5796b
AM		 10956 += ((PPC_HA (off) != 0)
10957 + (htab->opd_abi
e7d1c40c 10958 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 10959 && PPC_HA (off + 16) == PPC_HA (off))
10960 : 1));
176a0d42
AM		 10961 stub_entry->stub_sec->flags |= SEC_RELOC;
10962 }
721956f4
AM		 10963 }
10964 else
10965 {
ad8e1ba5
AM		 10966 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10967 variants. */
ac2df442 10968 bfd_vma r2off = 0;
6911b7dc 10969 bfd_vma local_off = 0;
ac2df442 10970
721956f4
AM		 10971 off = (stub_entry->target_value
10972 + stub_entry->target_section->output_offset
10973 + stub_entry->target_section->output_section->vma);
eea6121a 10974 off -= (stub_entry->stub_sec->size
721956f4
AM		 10975 + stub_entry->stub_sec->output_offset
10976 + stub_entry->stub_sec->output_section->vma);
10977
ad8e1ba5
AM		 10978 /* Reset the stub type from the plt variant in case we now
10979 can reach with a shorter stub. */
10980 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10981 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10982
10983 size = 4;
10984 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10985 {
25f53a85 10986 r2off = get_r2off (info, stub_entry);
b9e5796b 10987 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10988 {
10989 htab->stub_error = TRUE;
10990 return FALSE;
10991 }
ac2df442
AM		 10992 size = 12;
10993 if (PPC_HA (r2off) != 0)
10994 size = 16;
10995 off -= size - 4;
ad8e1ba5
AM		 10996 }
10997
6911b7dc
AM		 10998 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10999
b9e5796b
AM		 11000 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11001 Do the same for -R objects without function descriptors. */
11002 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11003 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11004 && r2off == 0))
721956f4
AM		 11005 {
11006 struct ppc_branch_hash_entry *br_entry;
11007
11008 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11009 stub_entry->root.string + 9,
b34976b6 11010 TRUE, FALSE);
721956f4
AM		 11011 if (br_entry == NULL)
11012 {
8de848d8 11013 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11014 stub_entry->root.string);
b34976b6
AM		 11015 htab->stub_error = TRUE;
11016 return FALSE;
721956f4
AM		 11017 }
11018
11019 if (br_entry->iter != htab->stub_iteration)
11020 {
11021 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11022 br_entry->offset = htab->brlt->size;
11023 htab->brlt->size += 8;
63bc6f6c 11024
ee75fd95 11025 if (htab->relbrlt != NULL)
eea6121a 11026 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11027 else if (info->emitrelocations)
11028 {
11029 htab->brlt->reloc_count += 1;
11030 htab->brlt->flags |= SEC_RELOC;
11031 }
721956f4 11032 }
ad8e1ba5
AM		 11033
11034 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11035 off = (br_entry->offset
11036 + htab->brlt->output_offset
11037 + htab->brlt->output_section->vma
11038 - elf_gp (htab->brlt->output_section->owner)
11039 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11040
176a0d42
AM		 11041 if (info->emitrelocations)
11042 {
11043 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11044 stub_entry->stub_sec->flags |= SEC_RELOC;
11045 }
11046
00f412ee 11047 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11048 {
11049 size = 12;
176a0d42 11050 if (PPC_HA (off) != 0)
ac2df442
AM		 11051 size = 16;
11052 }
11053 else
11054 {
00f412ee 11055 size = 16;
176a0d42 11056 if (PPC_HA (off) != 0)
ac2df442
AM		 11057 size += 4;
11058
11059 if (PPC_HA (r2off) != 0)
11060 size += 4;
00f412ee
AM		 11061 if (PPC_LO (r2off) != 0)
11062 size += 4;
ac2df442 11063 }
721956f4 11064 }
84f5d08e
AM		 11065 else if (info->emitrelocations)
11066 {
11067 stub_entry->stub_sec->reloc_count += 1;
11068 stub_entry->stub_sec->flags |= SEC_RELOC;
11069 }
721956f4
AM		 11070 }
11071
eea6121a 11072 stub_entry->stub_sec->size += size;
b34976b6 11073 return TRUE;
721956f4
AM		 11074}
11075
11076/* Set up various things so that we can make a list of input sections
11077 for each output section included in the link. Returns -1 on error,
cedb70c5 11078 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11079
11080int
e7d1c40c 11081ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4
AM		 11082{
11083 bfd *input_bfd;
734b6cf9 11084 int top_id, top_index, id;
721956f4 11085 asection *section;
734b6cf9 11086 asection **input_list;
721956f4
AM		 11087 bfd_size_type amt;
11088 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11089
4dfe6ac6
NC		 11090 if (htab == NULL)
11091 return -1;
4c52953f 11092
1e2f5b6e 11093 /* Find the top input section id. */
3d6f9012 11094 for (input_bfd = info->input_bfds, top_id = 3;
721956f4 11095 input_bfd != NULL;
c72f2fb2 11096 input_bfd = input_bfd->link.next)
721956f4 11097 {
721956f4
AM		 11098 for (section = input_bfd->sections;
11099 section != NULL;
11100 section = section->next)
11101 {
11102 if (top_id < section->id)
11103 top_id = section->id;
11104 }
11105 }
721956f4 11106
8f3bab57 11107 htab->top_id = top_id;
721956f4 11108 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 11109 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 11110 if (htab->stub_group == NULL)
11111 return -1;
11112
3d6f9012
AM		 11113 /* Set toc_off for com, und, abs and ind sections. */
11114 for (id = 0; id < 3; id++)
11115 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 11116
734b6cf9
AM		 11117 /* We can't use output_bfd->section_count here to find the top output
11118 section index as some sections may have been removed, and
8423293d 11119 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 11120 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM		 11121 section != NULL;
11122 section = section->next)
11123 {
11124 if (top_index < section->index)
11125 top_index = section->index;
11126 }
11127
11128 htab->top_index = top_index;
11129 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 11130 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 11131 htab->input_list = input_list;
11132 if (input_list == NULL)
11133 return -1;
11134
721956f4
AM		 11135 return 1;
11136}
11137
927be08e
AM		 11138/* Set up for first pass at multitoc partitioning. */
11139
11140void
11141ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11142{
11143 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11144
1c865ab2 11145 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11146 htab->toc_bfd = NULL;
11147 htab->toc_first_sec = NULL;
11148}
11149
e717da7e
AM		 11150/* The linker repeatedly calls this function for each TOC input section
11151 and linker generated GOT section. Group input bfds such that the toc
927be08e 11152 within a group is less than 64k in size. */
ad8e1ba5 11153
927be08e 11154bfd_boolean
4ce794b7 11155ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11156{
11157 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11158 bfd_vma addr, off, limit;
ad8e1ba5 11159
4dfe6ac6
NC		 11160 if (htab == NULL)
11161 return FALSE;
11162
927be08e 11163 if (!htab->second_toc_pass)
4c52953f 11164 {
927be08e 11165 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11166 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11167
11168 if (new_bfd)
bf102f86
AM		 11169 {
11170 htab->toc_bfd = isec->owner;
11171 htab->toc_first_sec = isec;
11172 }
927be08e 11173
bf102f86
AM		 11174 addr = isec->output_offset + isec->output_section->vma;
11175 off = addr - htab->toc_curr;
d77c8a4b
AM		 11176 limit = 0x80008000;
11177 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11178 limit = 0x10000;
11179 if (off + isec->size > limit)
bf102f86
AM		 11180 {
11181 addr = (htab->toc_first_sec->output_offset
11182 + htab->toc_first_sec->output_section->vma);
11183 htab->toc_curr = addr;
11184 }
99877b66 11185
927be08e
AM		 11186 /* toc_curr is the base address of this toc group. Set elf_gp
11187 for the input section to be the offset relative to the
11188 output toc base plus 0x8000. Making the input elf_gp an
11189 offset allows us to move the toc as a whole without
11190 recalculating input elf_gp. */
11191 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11192 off += TOC_BASE_OFF;
11193
11194 /* Die if someone uses a linker script that doesn't keep input
11195 file .toc and .got together. */
a4fd3de5
AM		 11196 if (new_bfd
11197 && elf_gp (isec->owner) != 0
927be08e
AM		 11198 && elf_gp (isec->owner) != off)
11199 return FALSE;
11200
11201 elf_gp (isec->owner) = off;
11202 return TRUE;
4c52953f 11203 }
927be08e
AM		 11204
11205 /* During the second pass toc_first_sec points to the start of
11206 a toc group, and toc_curr is used to track the old elf_gp.
11207 We use toc_bfd to ensure we only look at each bfd once. */
11208 if (htab->toc_bfd == isec->owner)
11209 return TRUE;
11210 htab->toc_bfd = isec->owner;
11211
11212 if (htab->toc_first_sec == NULL
11213 || htab->toc_curr != elf_gp (isec->owner))
11214 {
11215 htab->toc_curr = elf_gp (isec->owner);
11216 htab->toc_first_sec = isec;
11217 }
11218 addr = (htab->toc_first_sec->output_offset
11219 + htab->toc_first_sec->output_section->vma);
11220 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11221 elf_gp (isec->owner) = off;
11222
11223 return TRUE;
ad8e1ba5
AM		 11224}
11225
927be08e
AM		 11226/* Called via elf_link_hash_traverse to merge GOT entries for global
11227 symbol H. */
11228
11229static bfd_boolean
11230merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11231{
11232 if (h->root.type == bfd_link_hash_indirect)
11233 return TRUE;
11234
927be08e
AM		 11235 merge_got_entries (&h->got.glist);
11236
11237 return TRUE;
11238}
11239
11240/* Called via elf_link_hash_traverse to allocate GOT entries for global
11241 symbol H. */
11242
11243static bfd_boolean
11244reallocate_got (struct elf_link_hash_entry *h, void *inf)
11245{
11246 struct got_entry *gent;
11247
11248 if (h->root.type == bfd_link_hash_indirect)
11249 return TRUE;
11250
927be08e
AM		 11251 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11252 if (!gent->is_indirect)
11253 allocate_got (h, (struct bfd_link_info *) inf, gent);
11254 return TRUE;
11255}
11256
11257/* Called on the first multitoc pass after the last call to
11258 ppc64_elf_next_toc_section. This function removes duplicate GOT
11259 entries. */
11260
11261bfd_boolean
11262ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11263{
11264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11265 struct bfd *ibfd, *ibfd2;
11266 bfd_boolean done_something;
11267
11268 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11269
7865406b
AM		 11270 if (!htab->do_multi_toc)
11271 return FALSE;
11272
d0fae19d 11273 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11274 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11275
11276 /* And tlsld_got. */
c72f2fb2 11277 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11278 {
11279 struct got_entry *ent, *ent2;
11280
11281 if (!is_ppc64_elf (ibfd))
11282 continue;
11283
11284 ent = ppc64_tlsld_got (ibfd);
11285 if (!ent->is_indirect
11286 && ent->got.offset != (bfd_vma) -1)
11287 {
c72f2fb2 11288 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11289 {
11290 if (!is_ppc64_elf (ibfd2))
11291 continue;
11292
11293 ent2 = ppc64_tlsld_got (ibfd2);
11294 if (!ent2->is_indirect
11295 && ent2->got.offset != (bfd_vma) -1
11296 && elf_gp (ibfd2) == elf_gp (ibfd))
11297 {
11298 ent2->is_indirect = TRUE;
11299 ent2->got.ent = ent;
11300 }
11301 }
11302 }
11303 }
11304
11305 /* Zap sizes of got sections. */
33e44f2e
AM		 11306 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11307 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11308 htab->got_reli_size = 0;
11309
c72f2fb2 11310 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11311 {
11312 asection *got, *relgot;
11313
11314 if (!is_ppc64_elf (ibfd))
11315 continue;
11316
11317 got = ppc64_elf_tdata (ibfd)->got;
11318 if (got != NULL)
11319 {
11320 got->rawsize = got->size;
11321 got->size = 0;
11322 relgot = ppc64_elf_tdata (ibfd)->relgot;
11323 relgot->rawsize = relgot->size;
11324 relgot->size = 0;
11325 }
11326 }
11327
11328 /* Now reallocate the got, local syms first. We don't need to
11329 allocate section contents again since we never increase size. */
c72f2fb2 11330 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11331 {
11332 struct got_entry **lgot_ents;
11333 struct got_entry **end_lgot_ents;
11334 struct plt_entry **local_plt;
11335 struct plt_entry **end_local_plt;
f961d9dd 11336 unsigned char *lgot_masks;
927be08e
AM		 11337 bfd_size_type locsymcount;
11338 Elf_Internal_Shdr *symtab_hdr;
19e08130 11339 asection *s;
927be08e
AM		 11340
11341 if (!is_ppc64_elf (ibfd))
11342 continue;
11343
11344 lgot_ents = elf_local_got_ents (ibfd);
11345 if (!lgot_ents)
11346 continue;
11347
11348 symtab_hdr = &elf_symtab_hdr (ibfd);
11349 locsymcount = symtab_hdr->sh_info;
11350 end_lgot_ents = lgot_ents + locsymcount;
11351 local_plt = (struct plt_entry **) end_lgot_ents;
11352 end_local_plt = local_plt + locsymcount;
f961d9dd 11353 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11354 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11355 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11356 {
11357 struct got_entry *ent;
11358
11359 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11360 {
19e08130
AM		 11361 unsigned int ent_size = 8;
11362 unsigned int rel_size = sizeof (Elf64_External_Rela);
11363
d0fae19d
AM		 11364 ent->got.offset = s->size;
11365 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11366 {
19e08130
AM		 11367 ent_size *= 2;
11368 rel_size *= 2;
11369 }
11370 s->size += ent_size;
11371 if ((*lgot_masks & PLT_IFUNC) != 0)
11372 {
33e44f2e 11373 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11374 htab->got_reli_size += rel_size;
11375 }
11376 else if (info->shared)
11377 {
11378 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11379 srel->size += rel_size;
d0fae19d
AM		 11380 }
11381 }
927be08e
AM		 11382 }
11383 }
11384
11385 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11386
c72f2fb2 11387 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11388 {
11389 struct got_entry *ent;
11390
11391 if (!is_ppc64_elf (ibfd))
11392 continue;
11393
11394 ent = ppc64_tlsld_got (ibfd);
11395 if (!ent->is_indirect
11396 && ent->got.offset != (bfd_vma) -1)
11397 {
11398 asection *s = ppc64_elf_tdata (ibfd)->got;
11399 ent->got.offset = s->size;
11400 s->size += 16;
11401 if (info->shared)
11402 {
11403 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11404 srel->size += sizeof (Elf64_External_Rela);
11405 }
11406 }
11407 }
11408
33e44f2e 11409 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11410 if (!done_something)
c72f2fb2 11411 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11412 {
11413 asection *got;
11414
11415 if (!is_ppc64_elf (ibfd))
11416 continue;
11417
11418 got = ppc64_elf_tdata (ibfd)->got;
11419 if (got != NULL)
11420 {
11421 done_something = got->rawsize != got->size;
11422 if (done_something)
11423 break;
11424 }
11425 }
11426
11427 if (done_something)
e7d1c40c 11428 (*htab->params->layout_sections_again) ();
927be08e
AM		 11429
11430 /* Set up for second pass over toc sections to recalculate elf_gp
11431 on input sections. */
11432 htab->toc_bfd = NULL;
11433 htab->toc_first_sec = NULL;
11434 htab->second_toc_pass = TRUE;
11435 return done_something;
11436}
11437
11438/* Called after second pass of multitoc partitioning. */
11439
11440void
11441ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11442{
11443 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11444
11445 /* After the second pass, toc_curr tracks the TOC offset used
11446 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11447 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11448}
11449
9b5ecbd0
AM		 11450/* No toc references were found in ISEC. If the code in ISEC makes no
11451 calls, then there's no need to use toc adjusting stubs when branching
11452 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11453 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11454 needed, and 2 if a cyclical call-graph was found but no other reason
11455 for a stub was detected. If called from the top level, a return of
11456 2 means the same as a return of 0. */
9b5ecbd0
AM		 11457
11458static int
4ce794b7 11459toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11460{
9b5ecbd0 11461 int ret;
70cc837d
AM		 11462
11463 /* Mark this section as checked. */
11464 isec->call_check_done = 1;
9b5ecbd0 11465
772119ce
AM		 11466 /* We know none of our code bearing sections will need toc stubs. */
11467 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11468 return 0;
11469
eea6121a 11470 if (isec->size == 0)
082c50f8
AM		 11471 return 0;
11472
4c52953f
AM		 11473 if (isec->output_section == NULL)
11474 return 0;
11475
4c52953f 11476 ret = 0;
70cc837d 11477 if (isec->reloc_count != 0)
9b5ecbd0 11478 {
70cc837d
AM		 11479 Elf_Internal_Rela *relstart, *rel;
11480 Elf_Internal_Sym *local_syms;
11481 struct ppc_link_hash_table *htab;
2917689a 11482
70cc837d
AM		 11483 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11484 info->keep_memory);
11485 if (relstart == NULL)
11486 return -1;
90aecf7a 11487
70cc837d
AM		 11488 /* Look for branches to outside of this section. */
11489 local_syms = NULL;
11490 htab = ppc_hash_table (info);
11491 if (htab == NULL)
11492 return -1;
4c52953f 11493
70cc837d 11494 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11495 {
70cc837d
AM		 11496 enum elf_ppc64_reloc_type r_type;
11497 unsigned long r_symndx;
11498 struct elf_link_hash_entry *h;
11499 struct ppc_link_hash_entry *eh;
11500 Elf_Internal_Sym *sym;
11501 asection *sym_sec;
11502 struct _opd_sec_data *opd;
11503 bfd_vma sym_value;
11504 bfd_vma dest;
11505
11506 r_type = ELF64_R_TYPE (rel->r_info);
11507 if (r_type != R_PPC64_REL24
11508 && r_type != R_PPC64_REL14
11509 && r_type != R_PPC64_REL14_BRTAKEN
11510 && r_type != R_PPC64_REL14_BRNTAKEN)
11511 continue;
4c52953f 11512
70cc837d
AM		 11513 r_symndx = ELF64_R_SYM (rel->r_info);
11514 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11515 isec->owner))
4c52953f 11516 {
70cc837d
AM		 11517 ret = -1;
11518 break;
11519 }
4c52953f 11520
70cc837d
AM		 11521 /* Calls to dynamic lib functions go through a plt call stub
11522 that uses r2. */
11523 eh = (struct ppc_link_hash_entry *) h;
11524 if (eh != NULL
11525 && (eh->elf.plt.plist != NULL
11526 || (eh->oh != NULL
11527 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11528 {
11529 ret = 1;
11530 break;
4c52953f
AM		 11531 }
11532
70cc837d
AM		 11533 if (sym_sec == NULL)
11534 /* Ignore other undefined symbols. */
4c52953f 11535 continue;
4c52953f 11536
70cc837d
AM		 11537 /* Assume branches to other sections not included in the
11538 link need stubs too, to cover -R and absolute syms. */
11539 if (sym_sec->output_section == NULL)
11540 {
11541 ret = 1;
11542 break;
11543 }
4c52953f 11544
70cc837d
AM		 11545 if (h == NULL)
11546 sym_value = sym->st_value;
11547 else
11548 {
11549 if (h->root.type != bfd_link_hash_defined
11550 && h->root.type != bfd_link_hash_defweak)
11551 abort ();
11552 sym_value = h->root.u.def.value;
11553 }
11554 sym_value += rel->r_addend;
4c52953f 11555
70cc837d
AM		 11556 /* If this branch reloc uses an opd sym, find the code section. */
11557 opd = get_opd_info (sym_sec);
11558 if (opd != NULL)
11559 {
11560 if (h == NULL && opd->adjust != NULL)
11561 {
11562 long adjust;
4c52953f 11563
70cc837d
AM		 11564 adjust = opd->adjust[sym->st_value / 8];
11565 if (adjust == -1)
11566 /* Assume deleted functions won't ever be called. */
11567 continue;
11568 sym_value += adjust;
11569 }
4c52953f 11570
aef36ac1
AM		 11571 dest = opd_entry_value (sym_sec, sym_value,
11572 &sym_sec, NULL, FALSE);
70cc837d
AM		 11573 if (dest == (bfd_vma) -1)
11574 continue;
11575 }
11576 else
11577 dest = (sym_value
11578 + sym_sec->output_offset
11579 + sym_sec->output_section->vma);
4c52953f 11580
70cc837d
AM		 11581 /* Ignore branch to self. */
11582 if (sym_sec == isec)
11583 continue;
4c52953f 11584
70cc837d
AM		 11585 /* If the called function uses the toc, we need a stub. */
11586 if (sym_sec->has_toc_reloc
11587 || sym_sec->makes_toc_func_call)
4c52953f 11588 {
70cc837d 11589 ret = 1;
4c52953f
AM		 11590 break;
11591 }
70cc837d
AM		 11592
11593 /* Assume any branch that needs a long branch stub might in fact
11594 need a plt_branch stub. A plt_branch stub uses r2. */
11595 else if (dest - (isec->output_offset
11596 + isec->output_section->vma
6911b7dc
AM		 11597 + rel->r_offset) + (1 << 25)
11598 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11599 ? h->other
11600 : sym->st_other))
4c52953f 11601 {
70cc837d
AM		 11602 ret = 1;
11603 break;
11604 }
11605
11606 /* If calling back to a section in the process of being
11607 tested, we can't say for sure that no toc adjusting stubs
11608 are needed, so don't return zero. */
11609 else if (sym_sec->call_check_in_progress)
11610 ret = 2;
11611
11612 /* Branches to another section that itself doesn't have any TOC
11613 references are OK. Recursively call ourselves to check. */
11614 else if (!sym_sec->call_check_done)
11615 {
11616 int recur;
11617
11618 /* Mark current section as indeterminate, so that other
11619 sections that call back to current won't be marked as
11620 known. */
11621 isec->call_check_in_progress = 1;
11622 recur = toc_adjusting_stub_needed (info, sym_sec);
11623 isec->call_check_in_progress = 0;
11624
4c52953f
AM		 11625 if (recur != 0)
11626 {
70cc837d
AM		 11627 ret = recur;
11628 if (recur != 2)
11629 break;
4c52953f
AM		 11630 }
11631 }
4c52953f 11632 }
70cc837d
AM		 11633
11634 if (local_syms != NULL
11635 && (elf_symtab_hdr (isec->owner).contents
11636 != (unsigned char *) local_syms))
11637 free (local_syms);
11638 if (elf_section_data (isec)->relocs != relstart)
11639 free (relstart);
9b5ecbd0
AM		 11640 }
11641
70cc837d
AM		 11642 if ((ret & 1) == 0
11643 && isec->map_head.s != NULL
11644 && (strcmp (isec->output_section->name, ".init") == 0
11645 || strcmp (isec->output_section->name, ".fini") == 0))
11646 {
11647 if (isec->map_head.s->has_toc_reloc
11648 || isec->map_head.s->makes_toc_func_call)
11649 ret = 1;
11650 else if (!isec->map_head.s->call_check_done)
11651 {
11652 int recur;
11653 isec->call_check_in_progress = 1;
11654 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11655 isec->call_check_in_progress = 0;
11656 if (recur != 0)
11657 ret = recur;
11658 }
11659 }
11660
11661 if (ret == 1)
11662 isec->makes_toc_func_call = 1;
4c52953f 11663
9b5ecbd0
AM		 11664 return ret;
11665}
11666
721956f4
AM		 11667/* The linker repeatedly calls this function for each input section,
11668 in the order that input sections are linked into output sections.
11669 Build lists of input sections to determine groupings between which
11670 we may insert linker stubs. */
11671
9b5ecbd0 11672bfd_boolean
4ce794b7 11673ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11674{
11675 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11676
4dfe6ac6
NC		 11677 if (htab == NULL)
11678 return FALSE;
11679
734b6cf9
AM		 11680 if ((isec->output_section->flags & SEC_CODE) != 0
11681 && isec->output_section->index <= htab->top_index)
721956f4 11682 {
734b6cf9 11683 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11684 /* Steal the link_sec pointer for our list. */
721956f4 11685#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 11686 /* This happens to make the list in reverse order,
11687 which is what we want. */
734b6cf9
AM		 11688 PREV_SEC (isec) = *list;
11689 *list = isec;
721956f4 11690 }
ad8e1ba5 11691
4c52953f 11692 if (htab->multi_toc_needed)
9b5ecbd0 11693 {
8b974ba3
AM		 11694 /* Analyse sections that aren't already flagged as needing a
11695 valid toc pointer. Exclude .fixup for the linux kernel.
11696 .fixup contains branches, but only back to the function that
11697 hit an exception. */
11698 if (!(isec->has_toc_reloc
11699 || (isec->flags & SEC_CODE) == 0
11700 || strcmp (isec->name, ".fixup") == 0
11701 || isec->call_check_done))
11702 {
11703 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11704 return FALSE;
8b974ba3
AM		 11705 }
11706 /* Make all sections use the TOC assigned for this object file.
11707 This will be wrong for pasted sections; We fix that in
11708 check_pasted_section(). */
11709 if (elf_gp (isec->owner) != 0)
11710 htab->toc_curr = elf_gp (isec->owner);
11711 }
11712
ad8e1ba5 11713 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11714 return TRUE;
721956f4
AM		 11715}
11716
70cc837d
AM		 11717/* Check that all .init and .fini sections use the same toc, if they
11718 have toc relocs. */
11719
11720static bfd_boolean
11721check_pasted_section (struct bfd_link_info *info, const char *name)
11722{
11723 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11724
11725 if (o != NULL)
11726 {
11727 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11728 bfd_vma toc_off = 0;
11729 asection *i;
11730
11731 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11732 if (i->has_toc_reloc)
11733 {
11734 if (toc_off == 0)
11735 toc_off = htab->stub_group[i->id].toc_off;
11736 else if (toc_off != htab->stub_group[i->id].toc_off)
11737 return FALSE;
11738 }
6683a28d
AM		 11739
11740 if (toc_off == 0)
11741 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11742 if (i->makes_toc_func_call)
11743 {
11744 toc_off = htab->stub_group[i->id].toc_off;
11745 break;
11746 }
11747
70cc837d
AM		 11748 /* Make sure the whole pasted function uses the same toc offset. */
11749 if (toc_off != 0)
11750 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11751 htab->stub_group[i->id].toc_off = toc_off;
11752 }
11753 return TRUE;
11754}
11755
11756bfd_boolean
11757ppc64_elf_check_init_fini (struct bfd_link_info *info)
11758{
11759 return (check_pasted_section (info, ".init")
11760 & check_pasted_section (info, ".fini"));
11761}
11762
721956f4
AM		 11763/* See whether we can group stub sections together. Grouping stub
11764 sections may result in fewer stubs. More importantly, we need to
11765 put all .init* and .fini* stubs at the beginning of the .init or
11766 .fini output sections respectively, because glibc splits the
11767 _init and _fini functions into multiple parts. Putting a stub in
11768 the middle of a function is not a good idea. */
11769
11770static void
4ce794b7
AM		 11771group_sections (struct ppc_link_hash_table *htab,
11772 bfd_size_type stub_group_size,
11773 bfd_boolean stubs_always_before_branch)
721956f4 11774{
7c8fe5c4
AM		 11775 asection **list;
11776 bfd_size_type stub14_group_size;
11777 bfd_boolean suppress_size_errors;
11778
11779 suppress_size_errors = FALSE;
11780 stub14_group_size = stub_group_size;
11781 if (stub_group_size == 1)
11782 {
11783 /* Default values. */
11784 if (stubs_always_before_branch)
11785 {
11786 stub_group_size = 0x1e00000;
11787 stub14_group_size = 0x7800;
11788 }
11789 else
11790 {
11791 stub_group_size = 0x1c00000;
11792 stub14_group_size = 0x7000;
11793 }
11794 suppress_size_errors = TRUE;
11795 }
11796
11797 list = htab->input_list + htab->top_index;
734b6cf9 11798 do
721956f4 11799 {
734b6cf9
AM		 11800 asection *tail = *list;
11801 while (tail != NULL)
721956f4 11802 {
734b6cf9
AM		 11803 asection *curr;
11804 asection *prev;
11805 bfd_size_type total;
11806 bfd_boolean big_sec;
11807 bfd_vma curr_toc;
11808
11809 curr = tail;
eea6121a 11810 total = tail->size;
6bee8834
AM		 11811 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11812 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11813 ? stub14_group_size : stub_group_size);
11814 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11815 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11816 tail->owner, tail);
734b6cf9
AM		 11817 curr_toc = htab->stub_group[tail->id].toc_off;
11818
11819 while ((prev = PREV_SEC (curr)) != NULL
11820 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11821 < (ppc64_elf_section_data (prev) != NULL
11822 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11823 ? stub14_group_size : stub_group_size))
ad8e1ba5 11824 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11825 curr = prev;
11826
11827 /* OK, the size from the start of CURR to the end is less
11828 than stub_group_size and thus can be handled by one stub
11829 section. (or the tail section is itself larger than
11830 stub_group_size, in which case we may be toast.) We
11831 should really be keeping track of the total size of stubs
11832 added here, as stubs contribute to the final output
11833 section size. That's a little tricky, and this way will
11834 only break if stubs added make the total size more than
11835 2^25, ie. for the default stub_group_size, if stubs total
11836 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11837 do
721956f4
AM		 11838 {
11839 prev = PREV_SEC (tail);
734b6cf9 11840 /* Set up this stub group. */
721956f4
AM		 11841 htab->stub_group[tail->id].link_sec = curr;
11842 }
734b6cf9
AM		 11843 while (tail != curr && (tail = prev) != NULL);
11844
11845 /* But wait, there's more! Input sections up to stub_group_size
11846 bytes before the stub section can be handled by it too.
11847 Don't do this if we have a really large section after the
11848 stubs, as adding more stubs increases the chance that
11849 branches may not reach into the stub section. */
11850 if (!stubs_always_before_branch && !big_sec)
11851 {
11852 total = 0;
11853 while (prev != NULL
11854 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11855 < (ppc64_elf_section_data (prev) != NULL
11856 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11857 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 11858 && htab->stub_group[prev->id].toc_off == curr_toc)
11859 {
11860 tail = prev;
11861 prev = PREV_SEC (tail);
11862 htab->stub_group[tail->id].link_sec = curr;
11863 }
11864 }
11865 tail = prev;
721956f4
AM		 11866 }
11867 }
734b6cf9
AM		 11868 while (list-- != htab->input_list);
11869 free (htab->input_list);
721956f4
AM		 11870#undef PREV_SEC
11871}
11872
58d180e8
AM		 11873static const unsigned char glink_eh_frame_cie[] =
11874{
11875 0, 0, 0, 16, /* length. */
11876 0, 0, 0, 0, /* id. */
11877 1, /* CIE version. */
11878 'z', 'R', 0, /* Augmentation string. */
11879 4, /* Code alignment. */
11880 0x78, /* Data alignment. */
11881 65, /* RA reg. */
11882 1, /* Augmentation size. */
11883 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11884 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11885};
11886
d969d15f
AM		 11887/* Stripping output sections is normally done before dynamic section
11888 symbols have been allocated. This function is called later, and
11889 handles cases like htab->brlt which is mapped to its own output
11890 section. */
11891
11892static void
11893maybe_strip_output (struct bfd_link_info *info, asection *isec)
11894{
11895 if (isec->size == 0
11896 && isec->output_section->size == 0
53d8967a 11897 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11898 && !bfd_section_removed_from_list (info->output_bfd,
11899 isec->output_section)
11900 && elf_section_data (isec->output_section)->dynindx == 0)
11901 {
11902 isec->output_section->flags |= SEC_EXCLUDE;
11903 bfd_section_list_remove (info->output_bfd, isec->output_section);
11904 info->output_bfd->section_count--;
11905 }
11906}
11907
721956f4
AM		 11908/* Determine and set the size of the stub section for a final link.
11909
11910 The basic idea here is to examine all the relocations looking for
11911 PC-relative calls to a target that is unreachable with a "bl"
11912 instruction. */
11913
b34976b6 11914bfd_boolean
e7d1c40c 11915ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11916{
11917 bfd_size_type stub_group_size;
b34976b6 11918 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11919 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11920
4dfe6ac6
NC		 11921 if (htab == NULL)
11922 return FALSE;
11923
e7d1c40c
AM		 11924 if (htab->params->plt_thread_safe == -1 && !info->executable)
11925 htab->params->plt_thread_safe = 1;
b9e5796b 11926 if (!htab->opd_abi)
e7d1c40c
AM		 11927 htab->params->plt_thread_safe = 0;
11928 else if (htab->params->plt_thread_safe == -1)
794e51c0 11929 {
e2458743 11930 static const char *const thread_starter[] =
794e51c0
AM		 11931 {
11932 "pthread_create",
11933 /* libstdc++ */
11934 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11935 /* librt */
11936 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11937 "mq_notify", "create_timer",
11938 /* libanl */
11939 "getaddrinfo_a",
11940 /* libgomp */
11941 "GOMP_parallel_start",
11942 "GOMP_parallel_loop_static_start",
11943 "GOMP_parallel_loop_dynamic_start",
11944 "GOMP_parallel_loop_guided_start",
11945 "GOMP_parallel_loop_runtime_start",
68ffbac6 11946 "GOMP_parallel_sections_start",
794e51c0
AM		 11947 };
11948 unsigned i;
11949
11950 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11951 {
11952 struct elf_link_hash_entry *h;
11953 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11954 FALSE, FALSE, TRUE);
e7d1c40c
AM		 11955 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11956 if (htab->params->plt_thread_safe)
794e51c0
AM		 11957 break;
11958 }
11959 }
e7d1c40c
AM		 11960 stubs_always_before_branch = htab->params->group_size < 0;
11961 if (htab->params->group_size < 0)
11962 stub_group_size = -htab->params->group_size;
721956f4 11963 else
e7d1c40c 11964 stub_group_size = htab->params->group_size;
721956f4
AM		 11965
11966 group_sections (htab, stub_group_size, stubs_always_before_branch);
11967
721956f4
AM		 11968 while (1)
11969 {
11970 bfd *input_bfd;
11971 unsigned int bfd_indx;
11972 asection *stub_sec;
721956f4
AM		 11973
11974 htab->stub_iteration += 1;
721956f4
AM		 11975
11976 for (input_bfd = info->input_bfds, bfd_indx = 0;
11977 input_bfd != NULL;
c72f2fb2 11978 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 11979 {
11980 Elf_Internal_Shdr *symtab_hdr;
11981 asection *section;
6cdc0ccc 11982 Elf_Internal_Sym *local_syms = NULL;
721956f4 11983
0c8d6e5c 11984 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 11985 continue;
11986
721956f4 11987 /* We'll need the symbol table in a second. */
0ffa91dd 11988 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 11989 if (symtab_hdr->sh_info == 0)
11990 continue;
11991
721956f4
AM		 11992 /* Walk over each section attached to the input bfd. */
11993 for (section = input_bfd->sections;
11994 section != NULL;
11995 section = section->next)
11996 {
721956f4 11997 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 11998
11999 /* If there aren't any relocs, then there's nothing more
12000 to do. */
12001 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12002 || (section->flags & SEC_ALLOC) == 0
12003 || (section->flags & SEC_LOAD) == 0
12004 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12005 || section->reloc_count == 0)
12006 continue;
12007
12008 /* If this section is a link-once section that will be
12009 discarded, then don't create any stubs. */
12010 if (section->output_section == NULL
927be08e 12011 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12012 continue;
12013
1e2f5b6e
AM		 12014 /* Get the relocs. */
12015 internal_relocs
4ce794b7 12016 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12017 info->keep_memory);
721956f4 12018 if (internal_relocs == NULL)
1e2f5b6e 12019 goto error_ret_free_local;
721956f4
AM		 12020
12021 /* Now examine each relocation. */
12022 irela = internal_relocs;
12023 irelaend = irela + section->reloc_count;
12024 for (; irela < irelaend; irela++)
12025 {
4ce794b7
AM		 12026 enum elf_ppc64_reloc_type r_type;
12027 unsigned int r_indx;
721956f4
AM		 12028 enum ppc_stub_type stub_type;
12029 struct ppc_stub_hash_entry *stub_entry;
8387904d 12030 asection *sym_sec, *code_sec;
e054468f 12031 bfd_vma sym_value, code_value;
721956f4 12032 bfd_vma destination;
6911b7dc 12033 unsigned long local_off;
8843416a 12034 bfd_boolean ok_dest;
721956f4 12035 struct ppc_link_hash_entry *hash;
8387904d 12036 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12037 struct elf_link_hash_entry *h;
12038 Elf_Internal_Sym *sym;
721956f4
AM		 12039 char *stub_name;
12040 const asection *id_sec;
74f0fb50 12041 struct _opd_sec_data *opd;
e054468f 12042 struct plt_entry *plt_ent;
721956f4
AM		 12043
12044 r_type = ELF64_R_TYPE (irela->r_info);
12045 r_indx = ELF64_R_SYM (irela->r_info);
12046
4ce794b7 12047 if (r_type >= R_PPC64_max)
721956f4
AM		 12048 {
12049 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12050 goto error_ret_free_internal;
721956f4
AM		 12051 }
12052
12053 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12054 if (r_type != R_PPC64_REL24
12055 && r_type != R_PPC64_REL14
12056 && r_type != R_PPC64_REL14_BRTAKEN
12057 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12058 continue;
12059
12060 /* Now determine the call target, its name, value,
12061 section. */
411e1bfb
AM		 12062 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12063 r_indx, input_bfd))
12064 goto error_ret_free_internal;
12065 hash = (struct ppc_link_hash_entry *) h;
12066
8843416a 12067 ok_dest = FALSE;
8387904d 12068 fdh = NULL;
7fe2b9a6 12069 sym_value = 0;
411e1bfb 12070 if (hash == NULL)
721956f4 12071 {
411e1bfb 12072 sym_value = sym->st_value;
8843416a 12073 ok_dest = TRUE;
721956f4 12074 }
7fe2b9a6
AM		 12075 else if (hash->elf.root.type == bfd_link_hash_defined
12076 || hash->elf.root.type == bfd_link_hash_defweak)
12077 {
12078 sym_value = hash->elf.root.u.def.value;
12079 if (sym_sec->output_section != NULL)
12080 ok_dest = TRUE;
12081 }
12082 else if (hash->elf.root.type == bfd_link_hash_undefweak
12083 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12084 {
99877b66 12085 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12086 use the func descriptor sym instead if it is
12087 defined. */
ceb1f1ef 12088 if (hash->elf.root.root.string[0] == '.'
b31867b6 12089 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12090 {
8387904d
AM		 12091 if (fdh->elf.root.type == bfd_link_hash_defined
12092 || fdh->elf.root.type == bfd_link_hash_defweak)
12093 {
12094 sym_sec = fdh->elf.root.u.def.section;
12095 sym_value = fdh->elf.root.u.def.value;
12096 if (sym_sec->output_section != NULL)
12097 ok_dest = TRUE;
12098 }
99877b66
AM		 12099 else
12100 fdh = NULL;
8387904d 12101 }
7fe2b9a6
AM		 12102 }
12103 else
12104 {
12105 bfd_set_error (bfd_error_bad_value);
12106 goto error_ret_free_internal;
721956f4
AM		 12107 }
12108
8843416a 12109 destination = 0;
6911b7dc 12110 local_off = 0;
8843416a
AM		 12111 if (ok_dest)
12112 {
12113 sym_value += irela->r_addend;
12114 destination = (sym_value
12115 + sym_sec->output_offset
12116 + sym_sec->output_section->vma);
6911b7dc
AM		 12117 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12118 ? hash->elf.other
12119 : sym->st_other);
8843416a
AM		 12120 }
12121
8387904d 12122 code_sec = sym_sec;
e054468f 12123 code_value = sym_value;
74f0fb50
AM		 12124 opd = get_opd_info (sym_sec);
12125 if (opd != NULL)
8387904d
AM		 12126 {
12127 bfd_vma dest;
12128
74f0fb50 12129 if (hash == NULL && opd->adjust != NULL)
8387904d 12130 {
74f0fb50 12131 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 12132 if (adjust == -1)
12133 continue;
e054468f 12134 code_value += adjust;
8387904d
AM		 12135 sym_value += adjust;
12136 }
12137 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12138 &code_sec, &code_value, FALSE);
8387904d
AM		 12139 if (dest != (bfd_vma) -1)
12140 {
12141 destination = dest;
12142 if (fdh != NULL)
12143 {
12144 /* Fixup old ABI sym to point at code
12145 entry. */
99877b66 12146 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12147 hash->elf.root.u.def.section = code_sec;
e054468f 12148 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12149 }
12150 }
12151 }
12152
721956f4 12153 /* Determine what (if any) linker stub is needed. */
e054468f 12154 plt_ent = NULL;
721956f4 12155 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12156 &plt_ent, destination,
12157 local_off);
ad8e1ba5
AM		 12158
12159 if (stub_type != ppc_stub_plt_call)
12160 {
12161 /* Check whether we need a TOC adjusting stub.
12162 Since the linker pastes together pieces from
12163 different object files when creating the
12164 _init and _fini functions, it may be that a
12165 call to what looks like a local sym is in
12166 fact a call needing a TOC adjustment. */
8387904d
AM		 12167 if (code_sec != NULL
12168 && code_sec->output_section != NULL
12169 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 12170 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 12171 && (code_sec->has_toc_reloc
12172 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12173 stub_type = ppc_stub_long_branch_r2off;
12174 }
12175
721956f4
AM		 12176 if (stub_type == ppc_stub_none)
12177 continue;
12178
411e1bfb
AM		 12179 /* __tls_get_addr calls might be eliminated. */
12180 if (stub_type != ppc_stub_plt_call
12181 && hash != NULL
8387904d
AM		 12182 && (hash == htab->tls_get_addr
12183 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12184 && section->has_tls_reloc
12185 && irela != internal_relocs)
12186 {
12187 /* Get tls info. */
f961d9dd 12188 unsigned char *tls_mask;
411e1bfb 12189
3a71aa26 12190 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12191 irela - 1, input_bfd))
12192 goto error_ret_free_internal;
e7b938ca 12193 if (*tls_mask != 0)
411e1bfb
AM		 12194 continue;
12195 }
12196
3b421ab3
AM		 12197 if (stub_type == ppc_stub_plt_call
12198 && irela + 1 < irelaend
12199 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12200 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12201 {
12202 if (!tocsave_find (htab, INSERT,
12203 &local_syms, irela + 1, input_bfd))
12204 goto error_ret_free_internal;
12205 }
12206 else if (stub_type == ppc_stub_plt_call)
12207 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12208
721956f4
AM		 12209 /* Support for grouping stub sections. */
12210 id_sec = htab->stub_group[section->id].link_sec;
12211
12212 /* Get the name of this stub. */
12213 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12214 if (!stub_name)
12215 goto error_ret_free_internal;
12216
12217 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12218 stub_name, FALSE, FALSE);
721956f4
AM		 12219 if (stub_entry != NULL)
12220 {
12221 /* The proper stub has already been created. */
12222 free (stub_name);
794e51c0
AM		 12223 if (stub_type == ppc_stub_plt_call_r2save)
12224 stub_entry->stub_type = stub_type;
721956f4
AM		 12225 continue;
12226 }
12227
25f53a85 12228 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12229 if (stub_entry == NULL)
12230 {
12231 free (stub_name);
6cdc0ccc
AM		 12232 error_ret_free_internal:
12233 if (elf_section_data (section)->relocs == NULL)
12234 free (internal_relocs);
12235 error_ret_free_local:
12236 if (local_syms != NULL
12237 && (symtab_hdr->contents
12238 != (unsigned char *) local_syms))
12239 free (local_syms);
b34976b6 12240 return FALSE;
721956f4
AM		 12241 }
12242
ad8e1ba5 12243 stub_entry->stub_type = stub_type;
794e51c0
AM		 12244 if (stub_type != ppc_stub_plt_call
12245 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12246 {
12247 stub_entry->target_value = code_value;
12248 stub_entry->target_section = code_sec;
12249 }
12250 else
12251 {
12252 stub_entry->target_value = sym_value;
12253 stub_entry->target_section = sym_sec;
12254 }
721956f4 12255 stub_entry->h = hash;
e054468f 12256 stub_entry->plt_ent = plt_ent;
6911b7dc 12257 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12258
12259 if (stub_entry->h != NULL)
12260 htab->stub_globals += 1;
721956f4
AM		 12261 }
12262
12263 /* We're done with the internal relocs, free them. */
6cdc0ccc 12264 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12265 free (internal_relocs);
721956f4 12266 }
6cdc0ccc
AM		 12267
12268 if (local_syms != NULL
12269 && symtab_hdr->contents != (unsigned char *) local_syms)
12270 {
12271 if (!info->keep_memory)
12272 free (local_syms);
12273 else
12274 symtab_hdr->contents = (unsigned char *) local_syms;
12275 }
721956f4
AM		 12276 }
12277
5c3dead3 12278 /* We may have added some stubs. Find out the new size of the
721956f4 12279 stub sections. */
e7d1c40c 12280 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12281 stub_sec != NULL;
12282 stub_sec = stub_sec->next)
e717da7e 12283 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12284 {
5c3dead3 12285 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12286 stub_sec->size = 0;
12287 stub_sec->reloc_count = 0;
84f5d08e 12288 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12289 }
eea6121a
AM		 12290
12291 htab->brlt->size = 0;
84f5d08e
AM		 12292 htab->brlt->reloc_count = 0;
12293 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12294 if (htab->relbrlt != NULL)
eea6121a 12295 htab->relbrlt->size = 0;
721956f4 12296
63bc6f6c 12297 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12298
176a0d42
AM		 12299 if (info->emitrelocations
12300 && htab->glink != NULL && htab->glink->size != 0)
12301 {
12302 htab->glink->reloc_count = 1;
12303 htab->glink->flags |= SEC_RELOC;
12304 }
12305
58d180e8
AM		 12306 if (htab->glink_eh_frame != NULL
12307 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12308 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12309 {
4bbe044a 12310 size_t size = 0, align;
58d180e8 12311
e7d1c40c 12312 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12313 stub_sec != NULL;
12314 stub_sec = stub_sec->next)
12315 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12316 size += 20;
12317 if (htab->glink != NULL && htab->glink->size != 0)
12318 size += 24;
12319 if (size != 0)
12320 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12321 align = 1;
12322 align <<= htab->glink_eh_frame->output_section->alignment_power;
12323 align -= 1;
12324 size = (size + align) & ~align;
58d180e8
AM		 12325 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12326 htab->glink_eh_frame->size = size;
12327 }
12328
e7d1c40c
AM		 12329 if (htab->params->plt_stub_align != 0)
12330 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12331 stub_sec != NULL;
12332 stub_sec = stub_sec->next)
12333 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12334 stub_sec->size = ((stub_sec->size
12335 + (1 << htab->params->plt_stub_align) - 1)
12336 & (-1 << htab->params->plt_stub_align));
794e51c0 12337
e7d1c40c 12338 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12339 stub_sec != NULL;
12340 stub_sec = stub_sec->next)
12341 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12342 && stub_sec->rawsize != stub_sec->size)
12343 break;
12344
12345 /* Exit from this loop when no stubs have been added, and no stubs
12346 have changed size. */
58d180e8
AM		 12347 if (stub_sec == NULL
12348 && (htab->glink_eh_frame == NULL
12349 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12350 break;
12351
721956f4 12352 /* Ask the linker to do its stuff. */
e7d1c40c 12353 (*htab->params->layout_sections_again) ();
721956f4
AM		 12354 }
12355
d969d15f
AM		 12356 maybe_strip_output (info, htab->brlt);
12357 if (htab->glink_eh_frame != NULL)
12358 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12359
b34976b6 12360 return TRUE;
721956f4
AM		 12361}
12362
12363/* Called after we have determined section placement. If sections
805fc799 12364 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12365
805fc799 12366bfd_vma
1c865ab2 12367ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12368{
805fc799
AM		 12369 asection *s;
12370 bfd_vma TOCstart;
721956f4 12371
805fc799
AM		 12372 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12373 order. The TOC starts where the first of these sections starts. */
12374 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12375 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12376 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12377 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12378 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12379 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12380 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12381 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12382 {
12383 /* This may happen for
12384 o references to TOC base (SYM@toc / TOC[tc0]) without a
12385 .toc directive
12386 o bad linker script
12387 o --gc-sections and empty TOC sections
12388
12389 FIXME: Warn user? */
12390
12391 /* Look for a likely section. We probably won't even be
12392 using TOCstart. */
12393 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12394 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12395 | SEC_EXCLUDE))
805fc799
AM		 12396 == (SEC_ALLOC | SEC_SMALL_DATA))
12397 break;
721956f4 12398 if (s == NULL)
805fc799 12399 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12400 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12401 == (SEC_ALLOC | SEC_SMALL_DATA))
12402 break;
721956f4 12403 if (s == NULL)
805fc799 12404 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12405 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12406 == SEC_ALLOC)
805fc799 12407 break;
721956f4 12408 if (s == NULL)
805fc799 12409 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12410 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12411 break;
12412 }
721956f4 12413
805fc799
AM		 12414 TOCstart = 0;
12415 if (s != NULL)
12416 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12417
1c865ab2
AM		 12418 _bfd_set_gp_value (obfd, TOCstart);
12419
810d4e75 12420 if (info != NULL && s != NULL)
1c865ab2
AM		 12421 {
12422 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12423
810d4e75
AM		 12424 if (htab != NULL)
12425 {
12426 if (htab->elf.hgot != NULL)
12427 {
12428 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12429 htab->elf.hgot->root.u.def.section = s;
12430 }
12431 }
12432 else
1c865ab2 12433 {
810d4e75
AM		 12434 struct bfd_link_hash_entry *bh = NULL;
12435 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12436 s, TOC_BASE_OFF, NULL, FALSE,
12437 FALSE, &bh);
1c865ab2
AM		 12438 }
12439 }
805fc799 12440 return TOCstart;
721956f4
AM		 12441}
12442
a345bc8d
AM		 12443/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12444 write out any global entry stubs. */
12445
12446static bfd_boolean
12447build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12448{
12449 struct bfd_link_info *info;
12450 struct ppc_link_hash_table *htab;
12451 struct plt_entry *pent;
12452 asection *s;
12453
12454 if (h->root.type == bfd_link_hash_indirect)
12455 return TRUE;
12456
12457 if (!h->pointer_equality_needed)
12458 return TRUE;
12459
12460 if (h->def_regular)
12461 return TRUE;
12462
12463 info = inf;
12464 htab = ppc_hash_table (info);
12465 if (htab == NULL)
12466 return FALSE;
12467
12468 s = htab->glink;
12469 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12470 if (pent->plt.offset != (bfd_vma) -1
12471 && pent->addend == 0)
12472 {
12473 bfd_byte *p;
12474 asection *plt;
12475 bfd_vma off;
12476
a345bc8d 12477 p = s->contents + h->root.u.def.value;
33e44f2e 12478 plt = htab->elf.splt;
a345bc8d
AM		 12479 if (!htab->elf.dynamic_sections_created
12480 || h->dynindx == -1)
33e44f2e 12481 plt = htab->elf.iplt;
a345bc8d
AM		 12482 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12483 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12484
12485 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12486 {
12487 info->callbacks->einfo
12488 (_("%P: linkage table error against `%T'\n"),
12489 h->root.root.string);
12490 bfd_set_error (bfd_error_bad_value);
12491 htab->stub_error = TRUE;
12492 }
12493
7341d5e2
AM		 12494 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12495 if (htab->params->emit_stub_syms)
12496 {
12497 size_t len = strlen (h->root.root.string);
12498 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12499
12500 if (name == NULL)
12501 return FALSE;
12502
12503 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12504 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12505 if (h == NULL)
12506 return FALSE;
12507 if (h->root.type == bfd_link_hash_new)
12508 {
12509 h->root.type = bfd_link_hash_defined;
12510 h->root.u.def.section = s;
12511 h->root.u.def.value = p - s->contents;
12512 h->ref_regular = 1;
12513 h->def_regular = 1;
12514 h->ref_regular_nonweak = 1;
12515 h->forced_local = 1;
12516 h->non_elf = 0;
12517 }
12518 }
12519
a345bc8d
AM		 12520 if (PPC_HA (off) != 0)
12521 {
12522 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12523 p += 4;
12524 }
12525 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12526 p += 4;
12527 bfd_put_32 (s->owner, MTCTR_R12, p);
12528 p += 4;
12529 bfd_put_32 (s->owner, BCTR, p);
12530 break;
12531 }
12532 return TRUE;
12533}
12534
721956f4
AM		 12535/* Build all the stubs associated with the current output file.
12536 The stubs are kept in a hash table attached to the main linker
12537 hash table. This function is called via gldelf64ppc_finish. */
12538
b34976b6 12539bfd_boolean
e7d1c40c 12540ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12541 char **stats)
5d1634d7
AM		 12542{
12543 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12544 asection *stub_sec;
5d1634d7 12545 bfd_byte *p;
e717da7e 12546 int stub_sec_count = 0;
5d1634d7 12547
4dfe6ac6
NC		 12548 if (htab == NULL)
12549 return FALSE;
12550
eea6121a 12551 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12552 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12553 stub_sec != NULL;
12554 stub_sec = stub_sec->next)
eea6121a
AM		 12555 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12556 && stub_sec->size != 0)
e717da7e 12557 {
e7d1c40c 12558 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12559 if (stub_sec->contents == NULL)
12560 return FALSE;
12561 /* We want to check that built size is the same as calculated
12562 size. rawsize is a convenient location to use. */
12563 stub_sec->rawsize = stub_sec->size;
12564 stub_sec->size = 0;
e717da7e 12565 }
5d1634d7 12566
23eb7e01 12567 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12568 {
9f951329 12569 unsigned int indx;
ad8e1ba5 12570 bfd_vma plt0;
9f951329 12571
721956f4 12572 /* Build the .glink plt call stub. */
e7d1c40c 12573 if (htab->params->emit_stub_syms)
97b639ba
AM		 12574 {
12575 struct elf_link_hash_entry *h;
468392fb
AM		 12576 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12577 TRUE, FALSE, FALSE);
97b639ba
AM		 12578 if (h == NULL)
12579 return FALSE;
12580 if (h->root.type == bfd_link_hash_new)
12581 {
12582 h->root.type = bfd_link_hash_defined;
12583 h->root.u.def.section = htab->glink;
ee4bf8d2 12584 h->root.u.def.value = 8;
f5385ebf
AM		 12585 h->ref_regular = 1;
12586 h->def_regular = 1;
12587 h->ref_regular_nonweak = 1;
12588 h->forced_local = 1;
12589 h->non_elf = 0;
97b639ba
AM		 12590 }
12591 }
33e44f2e
AM		 12592 plt0 = (htab->elf.splt->output_section->vma
12593 + htab->elf.splt->output_offset
12594 - 16);
176a0d42
AM		 12595 if (info->emitrelocations)
12596 {
12597 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12598 if (r == NULL)
12599 return FALSE;
12600 r->r_offset = (htab->glink->output_offset
12601 + htab->glink->output_section->vma);
12602 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12603 r->r_addend = plt0;
12604 }
4ce794b7 12605 p = htab->glink->contents;
176a0d42 12606 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12607 bfd_put_64 (htab->glink->owner, plt0, p);
12608 p += 8;
b9e5796b
AM		 12609 if (htab->opd_abi)
12610 {
12611 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12612 p += 4;
12613 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12614 p += 4;
12615 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12616 p += 4;
12617 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12618 p += 4;
12619 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12620 p += 4;
12621 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12622 p += 4;
12623 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12624 p += 4;
12625 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12626 p += 4;
12627 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12628 p += 4;
12629 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12630 p += 4;
12631 }
12632 else
12633 {
12634 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12635 p += 4;
12636 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12637 p += 4;
12638 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12639 p += 4;
12640 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12641 p += 4;
12642 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12643 p += 4;
12644 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12645 p += 4;
12646 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12647 p += 4;
12648 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12649 p += 4;
12650 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12651 p += 4;
12652 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12653 p += 4;
12654 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12655 p += 4;
12656 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12657 p += 4;
12658 }
4ce794b7 12659 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12660 p += 4;
ee4bf8d2
AM		 12661 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12662 {
12663 bfd_put_32 (htab->glink->owner, NOP, p);
12664 p += 4;
12665 }
ad8e1ba5 12666
9f951329
AM		 12667 /* Build the .glink lazy link call stubs. */
12668 indx = 0;
a345bc8d 12669 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12670 {
b9e5796b 12671 if (htab->opd_abi)
9f951329 12672 {
b9e5796b
AM		 12673 if (indx < 0x8000)
12674 {
12675 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12676 p += 4;
12677 }
12678 else
12679 {
12680 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12681 p += 4;
12682 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12683 p);
12684 p += 4;
12685 }
9f951329 12686 }
4ce794b7 12687 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12688 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12689 indx++;
9f951329
AM		 12690 p += 4;
12691 }
a345bc8d
AM		 12692
12693 /* Build .glink global entry stubs. */
12694 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12695 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12696 }
5d1634d7 12697
7341d5e2 12698 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12699 {
4ce794b7 12700 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12701 htab->brlt->size);
4ce794b7 12702 if (htab->brlt->contents == NULL)
b34976b6 12703 return FALSE;
721956f4 12704 }
ee75fd95 12705 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12706 {
12707 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12708 htab->relbrlt->size);
63bc6f6c
AM		 12709 if (htab->relbrlt->contents == NULL)
12710 return FALSE;
12711 }
5d1634d7 12712
58d180e8
AM		 12713 if (htab->glink_eh_frame != NULL
12714 && htab->glink_eh_frame->size != 0)
12715 {
12716 bfd_vma val;
4bbe044a
AM		 12717 bfd_byte *last_fde;
12718 size_t last_fde_len, size, align, pad;
58d180e8
AM		 12719
12720 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12721 if (p == NULL)
12722 return FALSE;
12723 htab->glink_eh_frame->contents = p;
4bbe044a 12724 last_fde = p;
58d180e8
AM		 12725
12726 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12727
12728 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12729 /* CIE length (rewrite in case little-endian). */
4bbe044a
AM		 12730 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12731 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
58d180e8
AM		 12732 p += sizeof (glink_eh_frame_cie);
12733
e7d1c40c 12734 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12735 stub_sec != NULL;
12736 stub_sec = stub_sec->next)
12737 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12738 {
4bbe044a
AM		 12739 last_fde = p;
12740 last_fde_len = 16;
58d180e8
AM		 12741 /* FDE length. */
12742 bfd_put_32 (htab->elf.dynobj, 16, p);
12743 p += 4;
12744 /* CIE pointer. */
12745 val = p - htab->glink_eh_frame->contents;
12746 bfd_put_32 (htab->elf.dynobj, val, p);
12747 p += 4;
12748 /* Offset to stub section. */
12749 val = (stub_sec->output_section->vma
12750 + stub_sec->output_offset);
12751 val -= (htab->glink_eh_frame->output_section->vma
12752 + htab->glink_eh_frame->output_offset);
12753 val -= p - htab->glink_eh_frame->contents;
12754 if (val + 0x80000000 > 0xffffffff)
12755 {
12756 info->callbacks->einfo
8de848d8 12757 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
58d180e8
AM		 12758 stub_sec->name);
12759 return FALSE;
12760 }
12761 bfd_put_32 (htab->elf.dynobj, val, p);
12762 p += 4;
12763 /* stub section size. */
12764 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12765 p += 4;
12766 /* Augmentation. */
12767 p += 1;
12768 /* Pad. */
12769 p += 3;
12770 }
12771 if (htab->glink != NULL && htab->glink->size != 0)
12772 {
4bbe044a
AM		 12773 last_fde = p;
12774 last_fde_len = 20;
58d180e8
AM		 12775 /* FDE length. */
12776 bfd_put_32 (htab->elf.dynobj, 20, p);
12777 p += 4;
12778 /* CIE pointer. */
12779 val = p - htab->glink_eh_frame->contents;
12780 bfd_put_32 (htab->elf.dynobj, val, p);
12781 p += 4;
12782 /* Offset to .glink. */
12783 val = (htab->glink->output_section->vma
12784 + htab->glink->output_offset
12785 + 8);
12786 val -= (htab->glink_eh_frame->output_section->vma
12787 + htab->glink_eh_frame->output_offset);
12788 val -= p - htab->glink_eh_frame->contents;
12789 if (val + 0x80000000 > 0xffffffff)
12790 {
12791 info->callbacks->einfo
8de848d8 12792 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
58d180e8
AM		 12793 htab->glink->name);
12794 return FALSE;
12795 }
12796 bfd_put_32 (htab->elf.dynobj, val, p);
12797 p += 4;
12798 /* .glink size. */
a345bc8d 12799 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
58d180e8
AM		 12800 p += 4;
12801 /* Augmentation. */
12802 p += 1;
12803
12804 *p++ = DW_CFA_advance_loc + 1;
12805 *p++ = DW_CFA_register;
12806 *p++ = 65;
12807 *p++ = 12;
12808 *p++ = DW_CFA_advance_loc + 4;
12809 *p++ = DW_CFA_restore_extended;
12810 *p++ = 65;
12811 }
4bbe044a
AM		 12812 /* Subsume any padding into the last FDE if user .eh_frame
12813 sections are aligned more than glink_eh_frame. Otherwise any
12814 zero padding will be seen as a terminator. */
12815 size = p - htab->glink_eh_frame->contents;
12816 align = 1;
12817 align <<= htab->glink_eh_frame->output_section->alignment_power;
12818 align -= 1;
12819 pad = ((size + align) & ~align) - size;
12820 htab->glink_eh_frame->size = size + pad;
12821 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
58d180e8
AM		 12822 }
12823
721956f4
AM		 12824 /* Build the stubs as directed by the stub hash table. */
12825 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12826
aa8a7074
AM		 12827 if (htab->relbrlt != NULL)
12828 htab->relbrlt->reloc_count = 0;
12829
e7d1c40c
AM		 12830 if (htab->params->plt_stub_align != 0)
12831 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12832 stub_sec != NULL;
12833 stub_sec = stub_sec->next)
12834 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12835 stub_sec->size = ((stub_sec->size
12836 + (1 << htab->params->plt_stub_align) - 1)
12837 & (-1 << htab->params->plt_stub_align));
794e51c0 12838
e7d1c40c 12839 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12840 stub_sec != NULL;
12841 stub_sec = stub_sec->next)
e717da7e
AM		 12842 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12843 {
12844 stub_sec_count += 1;
eea6121a 12845 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12846 break;
12847 }
5d1634d7 12848
721956f4 12849 if (stub_sec != NULL
58d180e8
AM		 12850 || (htab->glink_eh_frame != NULL
12851 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12852 {
b34976b6 12853 htab->stub_error = TRUE;
8de848d8 12854 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12855 }
721956f4 12856
d2a300cf
AM		 12857 if (htab->stub_error)
12858 return FALSE;
12859
12860 if (stats != NULL)
12861 {
12862 *stats = bfd_malloc (500);
12863 if (*stats == NULL)
12864 return FALSE;
12865
ee75fd95 12866 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 12867 " branch %lu\n"
12868 " toc adjust %lu\n"
12869 " long branch %lu\n"
12870 " long toc adj %lu\n"
794e51c0 12871 " plt call %lu\n"
7341d5e2
AM		 12872 " plt call toc %lu\n"
12873 " global entry %lu"),
e717da7e 12874 stub_sec_count,
ee75fd95 12875 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 12876 htab->stub_count[ppc_stub_long_branch - 1],
12877 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12878 htab->stub_count[ppc_stub_plt_branch - 1],
12879 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 12880 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 12881 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12882 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 12883 }
12884 return TRUE;
5bd4f169
AM		 12885}
12886
99877b66
AM		 12887/* This function undoes the changes made by add_symbol_adjust. */
12888
12889static bfd_boolean
12890undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12891{
12892 struct ppc_link_hash_entry *eh;
12893
12894 if (h->root.type == bfd_link_hash_indirect)
12895 return TRUE;
12896
99877b66
AM		 12897 eh = (struct ppc_link_hash_entry *) h;
12898 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12899 return TRUE;
12900
12901 eh->elf.root.type = bfd_link_hash_undefined;
12902 return TRUE;
12903}
12904
12905void
12906ppc64_elf_restore_symbols (struct bfd_link_info *info)
12907{
12908 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 12909
12910 if (htab != NULL)
12911 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 12912}
12913
60124e18
AM		 12914/* What to do when ld finds relocations against symbols defined in
12915 discarded sections. */
12916
12917static unsigned int
12918ppc64_elf_action_discarded (asection *sec)
12919{
12920 if (strcmp (".opd", sec->name) == 0)
12921 return 0;
12922
12923 if (strcmp (".toc", sec->name) == 0)
12924 return 0;
12925
bce50a28
JJ		 12926 if (strcmp (".toc1", sec->name) == 0)
12927 return 0;
12928
60124e18
AM		 12929 return _bfd_elf_default_action_discarded (sec);
12930}
12931
5bd4f169
AM		 12932/* The RELOCATE_SECTION function is called by the ELF backend linker
12933 to handle the relocations for a section.
12934
12935 The relocs are always passed as Rela structures; if the section
12936 actually uses Rel structures, the r_addend field will always be
12937 zero.
12938
12939 This function is responsible for adjust the section contents as
12940 necessary, and (if using Rela relocs and generating a
1049f94e 12941 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 12942 necessary.
12943
12944 This function does not have to worry about setting the reloc
12945 address or the reloc symbol index.
12946
12947 LOCAL_SYMS is a pointer to the swapped in local symbols.
12948
12949 LOCAL_SECTIONS is an array giving the section in the input file
12950 corresponding to the st_shndx field of each local symbol.
12951
12952 The global hash table entry for the global symbols can be found
12953 via elf_sym_hashes (input_bfd).
12954
1049f94e 12955 When generating relocatable output, this function must handle
5bd4f169
AM		 12956 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12957 going to be the section symbol corresponding to the output
12958 section, which means that the addend must be adjusted
12959 accordingly. */
12960
b34976b6 12961static bfd_boolean
4ce794b7
AM		 12962ppc64_elf_relocate_section (bfd *output_bfd,
12963 struct bfd_link_info *info,
12964 bfd *input_bfd,
12965 asection *input_section,
12966 bfd_byte *contents,
12967 Elf_Internal_Rela *relocs,
12968 Elf_Internal_Sym *local_syms,
12969 asection **local_sections)
5bd4f169 12970{
65f38f15 12971 struct ppc_link_hash_table *htab;
5bd4f169
AM		 12972 Elf_Internal_Shdr *symtab_hdr;
12973 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 12974 Elf_Internal_Rela *rel;
12975 Elf_Internal_Rela *relend;
411e1bfb
AM		 12976 Elf_Internal_Rela outrel;
12977 bfd_byte *loc;
411e1bfb 12978 struct got_entry **local_got_ents;
5bd4f169 12979 bfd_vma TOCstart;
b34976b6
AM		 12980 bfd_boolean ret = TRUE;
12981 bfd_boolean is_opd;
794e51c0
AM		 12982 /* Assume 'at' branch hints. */
12983 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 12984 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 12985
65f38f15 12986 /* Initialize howto table if needed. */
5bd4f169 12987 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 12988 ppc_howto_init ();
12989
65f38f15 12990 htab = ppc_hash_table (info);
4dfe6ac6
NC		 12991 if (htab == NULL)
12992 return FALSE;
ee75fd95
AM		 12993
12994 /* Don't relocate stub sections. */
e7d1c40c 12995 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 12996 return TRUE;
12997
0c8d6e5c 12998 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 12999
411e1bfb 13000 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 13001 TOCstart = elf_gp (output_bfd);
0ffa91dd 13002 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 13003 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 13004 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 13005
5bd4f169
AM		 13006 rel = relocs;
13007 relend = relocs + input_section->reloc_count;
13008 for (; rel < relend; rel++)
13009 {
04c9666a 13010 enum elf_ppc64_reloc_type r_type;
31c76678 13011 bfd_vma addend;
5bd4f169
AM		 13012 bfd_reloc_status_type r;
13013 Elf_Internal_Sym *sym;
13014 asection *sec;
039b3fef
AM		 13015 struct elf_link_hash_entry *h_elf;
13016 struct ppc_link_hash_entry *h;
13017 struct ppc_link_hash_entry *fdh;
5bd4f169 13018 const char *sym_name;
0d4792f7 13019 unsigned long r_symndx, toc_symndx;
3a71aa26 13020 bfd_vma toc_addend;
f961d9dd
AM		 13021 unsigned char tls_mask, tls_gd, tls_type;
13022 unsigned char sym_type;
5bd4f169 13023 bfd_vma relocation;
b34976b6
AM		 13024 bfd_boolean unresolved_reloc;
13025 bfd_boolean warned;
bc30df16 13026 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13027 unsigned int insn;
e11840f9 13028 unsigned int mask;
721956f4
AM		 13029 struct ppc_stub_hash_entry *stub_entry;
13030 bfd_vma max_br_offset;
13031 bfd_vma from;
31c76678 13032 const Elf_Internal_Rela orig_rel = *rel;
b80eed39
AM		 13033 reloc_howto_type *howto;
13034 struct reloc_howto_struct alt_howto;
5bd4f169 13035
4ce794b7 13036 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13037 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13038
13039 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13040 symbol of the previous ADDR64 reloc. The symbol gives us the
13041 proper TOC base to use. */
13042 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13043 && rel != relocs
13044 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13045 && is_opd)
13046 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13047
4ce794b7
AM		 13048 sym = NULL;
13049 sec = NULL;
039b3fef 13050 h_elf = NULL;
4ce794b7 13051 sym_name = NULL;
b34976b6
AM		 13052 unresolved_reloc = FALSE;
13053 warned = FALSE;
65f38f15 13054
0b13192e 13055 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13056 {
13057 /* It's a local symbol. */
74f0fb50 13058 struct _opd_sec_data *opd;
4025353c 13059
5bd4f169
AM		 13060 sym = local_syms + r_symndx;
13061 sec = local_sections[r_symndx];
26c61ae5 13062 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13063 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13064 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13065 opd = get_opd_info (sec);
13066 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13067 {
74f0fb50 13068 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 13069 if (adjust == -1)
13070 relocation = 0;
13071 else
4cc603a5
AM		 13072 {
13073 /* If this is a relocation against the opd section sym
13074 and we have edited .opd, adjust the reloc addend so
13075 that ld -r and ld --emit-relocs output is correct.
13076 If it is a reloc against some other .opd symbol,
13077 then the symbol value will be adjusted later. */
13078 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13079 rel->r_addend += adjust;
13080 else
13081 relocation += adjust;
13082 }
1e2f5b6e 13083 }
5bd4f169
AM		 13084 }
13085 else
13086 {
62d887d4
L		 13087 bfd_boolean ignored;
13088
b2a8e766
AM		 13089 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13090 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13091 h_elf, sec, relocation,
62d887d4 13092 unresolved_reloc, warned, ignored);
039b3fef
AM		 13093 sym_name = h_elf->root.root.string;
13094 sym_type = h_elf->type;
b69fdb4e
AM		 13095 if (sec != NULL
13096 && sec->owner == output_bfd
13097 && strcmp (sec->name, ".opd") == 0)
13098 {
13099 /* This is a symbol defined in a linker script. All
13100 such are defined in output sections, even those
13101 defined by simple assignment from a symbol defined in
13102 an input section. Transfer the symbol to an
13103 appropriate input .opd section, so that a branch to
13104 this symbol will be mapped to the location specified
13105 by the opd entry. */
13106 struct bfd_link_order *lo;
13107 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13108 if (lo->type == bfd_indirect_link_order)
13109 {
13110 asection *isec = lo->u.indirect.section;
13111 if (h_elf->root.u.def.value >= isec->output_offset
13112 && h_elf->root.u.def.value < (isec->output_offset
13113 + isec->size))
13114 {
13115 h_elf->root.u.def.value -= isec->output_offset;
13116 h_elf->root.u.def.section = isec;
13117 sec = isec;
13118 break;
13119 }
13120 }
13121 }
5bd4f169 13122 }
039b3fef 13123 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13124
dbaa2011 13125 if (sec != NULL && discarded_section (sec))
e4067dbb 13126 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR		 13127 rel, 1, relend,
13128 ppc64_elf_howto_table[r_type], 0,
e4067dbb 13129 contents);
ab96bf03
AM		 13130
13131 if (info->relocatable)
13132 continue;
13133
f40da81b
AM		 13134 if (h != NULL && &h->elf == htab->elf.hgot)
13135 {
13136 relocation = (TOCstart
13137 + htab->stub_group[input_section->id].toc_off);
13138 sec = bfd_abs_section_ptr;
13139 unresolved_reloc = FALSE;
13140 }
13141
951fd09b
AM		 13142 /* TLS optimizations. Replace instruction sequences and relocs
13143 based on information we collected in tls_optimize. We edit
13144 RELOCS so that --emit-relocs will output something sensible
13145 for the final instruction stream. */
13146 tls_mask = 0;
13147 tls_gd = 0;
0d4792f7 13148 toc_symndx = 0;
727fc41e
AM		 13149 if (h != NULL)
13150 tls_mask = h->tls_mask;
13151 else if (local_got_ents != NULL)
411e1bfb 13152 {
e054468f
AM		 13153 struct plt_entry **local_plt = (struct plt_entry **)
13154 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13155 unsigned char *lgot_masks = (unsigned char *)
e054468f 13156 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13157 tls_mask = lgot_masks[r_symndx];
13158 }
13159 if (tls_mask == 0
13160 && (r_type == R_PPC64_TLS
13161 || r_type == R_PPC64_TLSGD
13162 || r_type == R_PPC64_TLSLD))
13163 {
13164 /* Check for toc tls entries. */
f961d9dd 13165 unsigned char *toc_tls;
0d4792f7 13166
727fc41e
AM		 13167 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13168 &local_syms, rel, input_bfd))
13169 return FALSE;
0d4792f7 13170
727fc41e
AM		 13171 if (toc_tls)
13172 tls_mask = *toc_tls;
0d4792f7
AM		 13173 }
13174
13175 /* Check that tls relocs are used with tls syms, and non-tls
13176 relocs are used with non-tls syms. */
cf35638d 13177 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13178 && r_type != R_PPC64_NONE
13179 && (h == NULL
039b3fef
AM		 13180 || h->elf.root.type == bfd_link_hash_defined
13181 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13182 && (IS_PPC64_TLS_RELOC (r_type)
13183 != (sym_type == STT_TLS
13184 || (sym_type == STT_SECTION
13185 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13186 {
727fc41e
AM		 13187 if (tls_mask != 0
13188 && (r_type == R_PPC64_TLS
13189 || r_type == R_PPC64_TLSGD
13190 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13191 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13192 ;
13193 else
25f53a85 13194 info->callbacks->einfo
1d483afe 13195 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13196 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13197 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13198 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13199 ppc64_elf_howto_table[r_type]->name,
13200 sym_name);
411e1bfb
AM		 13201 }
13202
13203 /* Ensure reloc mapping code below stays sane. */
13204 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13205 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13206 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13207 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13208 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13209 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13210 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13211 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13212 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13213 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13214 abort ();
0d4792f7 13215
411e1bfb
AM		 13216 switch (r_type)
13217 {
13218 default:
411e1bfb
AM		 13219 break;
13220
ba761f19
AM		 13221 case R_PPC64_LO_DS_OPT:
13222 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13223 if ((insn & (0x3f << 26)) != 58u << 26)
13224 abort ();
13225 insn += (14u << 26) - (58u << 26);
13226 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13227 r_type = R_PPC64_TOC16_LO;
13228 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13229 break;
13230
411e1bfb
AM		 13231 case R_PPC64_TOC16:
13232 case R_PPC64_TOC16_LO:
13233 case R_PPC64_TOC16_DS:
13234 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13235 {
13236 /* Check for toc tls entries. */
f961d9dd 13237 unsigned char *toc_tls;
951fd09b 13238 int retval;
411e1bfb 13239
3a71aa26
AM		 13240 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13241 &local_syms, rel, input_bfd);
951fd09b 13242 if (retval == 0)
411e1bfb
AM		 13243 return FALSE;
13244
13245 if (toc_tls)
13246 {
951fd09b 13247 tls_mask = *toc_tls;
411e1bfb
AM		 13248 if (r_type == R_PPC64_TOC16_DS
13249 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13250 {
13251 if (tls_mask != 0
13252 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13253 goto toctprel;
13254 }
411e1bfb 13255 else
951fd09b
AM		 13256 {
13257 /* If we found a GD reloc pair, then we might be
13258 doing a GD->IE transition. */
13259 if (retval == 2)
13260 {
13261 tls_gd = TLS_TPRELGD;
13262 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13263 goto tls_ldgd_opt;
951fd09b
AM		 13264 }
13265 else if (retval == 3)
13266 {
13267 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13268 goto tls_ldgd_opt;
951fd09b
AM		 13269 }
13270 }
411e1bfb
AM		 13271 }
13272 }
13273 break;
13274
9d6ded02
AM		 13275 case R_PPC64_GOT_TPREL16_HI:
13276 case R_PPC64_GOT_TPREL16_HA:
13277 if (tls_mask != 0
13278 && (tls_mask & TLS_TPREL) == 0)
13279 {
13280 rel->r_offset -= d_offset;
13281 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13282 r_type = R_PPC64_NONE;
13283 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13284 }
13285 break;
13286
411e1bfb
AM		 13287 case R_PPC64_GOT_TPREL16_DS:
13288 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13289 if (tls_mask != 0
13290 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13291 {
81407a69 13292 toctprel:
4fe5ca5b 13293 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 13294 insn &= 31 << 21;
13295 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 13296 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 13297 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13298 if (toc_symndx != 0)
13299 {
13300 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13301 rel->r_addend = toc_addend;
0d4792f7
AM		 13302 /* We changed the symbol. Start over in order to
13303 get h, sym, sec etc. right. */
13304 rel--;
13305 continue;
13306 }
13307 else
13308 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13309 }
13310 break;
13311
13312 case R_PPC64_TLS:
951fd09b
AM		 13313 if (tls_mask != 0
13314 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13315 {
411e1bfb 13316 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13317 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13318 if (insn == 0)
411e1bfb 13319 abort ();
411e1bfb 13320 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13321 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13322 PPC64_TPREL16_LO which is at low-order half-word. */
13323 rel->r_offset += d_offset;
0d4792f7
AM		 13324 r_type = R_PPC64_TPREL16_LO;
13325 if (toc_symndx != 0)
13326 {
13327 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13328 rel->r_addend = toc_addend;
0d4792f7
AM		 13329 /* We changed the symbol. Start over in order to
13330 get h, sym, sec etc. right. */
13331 rel--;
13332 continue;
13333 }
13334 else
13335 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13336 }
13337 break;
13338
411e1bfb
AM		 13339 case R_PPC64_GOT_TLSGD16_HI:
13340 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13341 tls_gd = TLS_TPRELGD;
13342 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13343 goto tls_gdld_hi;
13344 break;
13345
411e1bfb
AM		 13346 case R_PPC64_GOT_TLSLD16_HI:
13347 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13348 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13349 {
951fd09b
AM		 13350 tls_gdld_hi:
13351 if ((tls_mask & tls_gd) != 0)
13352 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13353 + R_PPC64_GOT_TPREL16_DS);
13354 else
411e1bfb 13355 {
4fe5ca5b 13356 rel->r_offset -= d_offset;
727ac201 13357 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13358 r_type = R_PPC64_NONE;
411e1bfb 13359 }
951fd09b 13360 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13361 }
13362 break;
13363
951fd09b
AM		 13364 case R_PPC64_GOT_TLSGD16:
13365 case R_PPC64_GOT_TLSGD16_LO:
13366 tls_gd = TLS_TPRELGD;
13367 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13368 goto tls_ldgd_opt;
951fd09b 13369 break;
411e1bfb 13370
951fd09b
AM		 13371 case R_PPC64_GOT_TLSLD16:
13372 case R_PPC64_GOT_TLSLD16_LO:
13373 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13374 {
3a71aa26 13375 unsigned int insn1, insn2, insn3;
102890f0
AM		 13376 bfd_vma offset;
13377
13378 tls_ldgd_opt:
727fc41e
AM		 13379 offset = (bfd_vma) -1;
13380 /* If not using the newer R_PPC64_TLSGD/LD to mark
13381 __tls_get_addr calls, we must trust that the call
13382 stays with its arg setup insns, ie. that the next
13383 reloc is the __tls_get_addr call associated with
13384 the current reloc. Edit both insns. */
13385 if (input_section->has_tls_get_addr_call
13386 && rel + 1 < relend
13387 && branch_reloc_hash_match (input_bfd, rel + 1,
13388 htab->tls_get_addr,
13389 htab->tls_get_addr_fd))
13390 offset = rel[1].r_offset;
102890f0 13391 if ((tls_mask & tls_gd) != 0)
411e1bfb 13392 {
102890f0 13393 /* IE */
3a71aa26
AM		 13394 insn1 = bfd_get_32 (output_bfd,
13395 contents + rel->r_offset - d_offset);
102890f0
AM		 13396 insn1 &= (1 << 26) - (1 << 2);
13397 insn1 |= 58 << 26; /* ld */
13398 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13399 if (offset != (bfd_vma) -1)
f58d5a2d 13400 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13401 if ((tls_mask & TLS_EXPLICIT) == 0)
13402 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13403 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13404 else
102890f0
AM		 13405 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13406 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13407 }
13408 else
13409 {
13410 /* LE */
13411 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13412 insn2 = 0x38630000; /* addi 3,3,0 */
13413 if (tls_gd == 0)
951fd09b 13414 {
102890f0 13415 /* Was an LD reloc. */
1d483afe
AM		 13416 if (toc_symndx)
13417 sec = local_sections[toc_symndx];
13418 for (r_symndx = 0;
13419 r_symndx < symtab_hdr->sh_info;
13420 r_symndx++)
13421 if (local_sections[r_symndx] == sec)
13422 break;
13423 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13424 r_symndx = STN_UNDEF;
102890f0 13425 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13426 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13427 rel->r_addend -= (local_syms[r_symndx].st_value
13428 + sec->output_offset
13429 + sec->output_section->vma);
951fd09b 13430 }
102890f0 13431 else if (toc_symndx != 0)
3a71aa26
AM		 13432 {
13433 r_symndx = toc_symndx;
13434 rel->r_addend = toc_addend;
13435 }
102890f0
AM		 13436 r_type = R_PPC64_TPREL16_HA;
13437 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13438 if (offset != (bfd_vma) -1)
13439 {
13440 rel[1].r_info = ELF64_R_INFO (r_symndx,
13441 R_PPC64_TPREL16_LO);
13442 rel[1].r_offset = offset + d_offset;
13443 rel[1].r_addend = rel->r_addend;
13444 }
102890f0 13445 }
3a71aa26
AM		 13446 bfd_put_32 (output_bfd, insn1,
13447 contents + rel->r_offset - d_offset);
727fc41e
AM		 13448 if (offset != (bfd_vma) -1)
13449 {
13450 insn3 = bfd_get_32 (output_bfd,
13451 contents + offset + 4);
13452 if (insn3 == NOP
13453 || insn3 == CROR_151515 || insn3 == CROR_313131)
13454 {
13455 rel[1].r_offset += 4;
13456 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13457 insn2 = NOP;
13458 }
13459 bfd_put_32 (output_bfd, insn2, contents + offset);
13460 }
13461 if ((tls_mask & tls_gd) == 0
13462 && (tls_gd == 0 || toc_symndx != 0))
13463 {
13464 /* We changed the symbol. Start over in order
13465 to get h, sym, sec etc. right. */
13466 rel--;
13467 continue;
13468 }
13469 }
13470 break;
13471
13472 case R_PPC64_TLSGD:
13473 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13474 {
13475 unsigned int insn2, insn3;
13476 bfd_vma offset = rel->r_offset;
13477
13478 if ((tls_mask & TLS_TPRELGD) != 0)
13479 {
13480 /* IE */
13481 r_type = R_PPC64_NONE;
13482 insn2 = 0x7c636a14; /* add 3,3,13 */
13483 }
13484 else
13485 {
13486 /* LE */
13487 if (toc_symndx != 0)
13488 {
13489 r_symndx = toc_symndx;
13490 rel->r_addend = toc_addend;
13491 }
13492 r_type = R_PPC64_TPREL16_LO;
13493 rel->r_offset = offset + d_offset;
13494 insn2 = 0x38630000; /* addi 3,3,0 */
13495 }
13496 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13497 /* Zap the reloc on the _tls_get_addr call too. */
13498 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13499 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13500 insn3 = bfd_get_32 (output_bfd,
13501 contents + offset + 4);
102890f0
AM		 13502 if (insn3 == NOP
13503 || insn3 == CROR_151515 || insn3 == CROR_313131)
13504 {
727fc41e 13505 rel->r_offset += 4;
3a71aa26
AM		 13506 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13507 insn2 = NOP;
102890f0 13508 }
102890f0 13509 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13510 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 13511 {
102890f0
AM		 13512 rel--;
13513 continue;
411e1bfb 13514 }
411e1bfb 13515 }
411e1bfb
AM		 13516 break;
13517
727fc41e
AM		 13518 case R_PPC64_TLSLD:
13519 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13520 {
13521 unsigned int insn2, insn3;
13522 bfd_vma offset = rel->r_offset;
13523
13524 if (toc_symndx)
13525 sec = local_sections[toc_symndx];
13526 for (r_symndx = 0;
13527 r_symndx < symtab_hdr->sh_info;
13528 r_symndx++)
13529 if (local_sections[r_symndx] == sec)
13530 break;
13531 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13532 r_symndx = STN_UNDEF;
727fc41e 13533 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13534 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13535 rel->r_addend -= (local_syms[r_symndx].st_value
13536 + sec->output_offset
13537 + sec->output_section->vma);
13538
13539 r_type = R_PPC64_TPREL16_LO;
13540 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13541 rel->r_offset = offset + d_offset;
13542 /* Zap the reloc on the _tls_get_addr call too. */
13543 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13544 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13545 insn2 = 0x38630000; /* addi 3,3,0 */
13546 insn3 = bfd_get_32 (output_bfd,
13547 contents + offset + 4);
13548 if (insn3 == NOP
13549 || insn3 == CROR_151515 || insn3 == CROR_313131)
13550 {
13551 rel->r_offset += 4;
13552 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13553 insn2 = NOP;
13554 }
13555 bfd_put_32 (output_bfd, insn2, contents + offset);
13556 rel--;
13557 continue;
13558 }
13559 break;
13560
411e1bfb 13561 case R_PPC64_DTPMOD64:
951fd09b
AM		 13562 if (rel + 1 < relend
13563 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13564 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13565 {
951fd09b
AM		 13566 if ((tls_mask & TLS_GD) == 0)
13567 {
13568 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13569 if ((tls_mask & TLS_TPRELGD) != 0)
13570 r_type = R_PPC64_TPREL64;
13571 else
13572 {
4ce794b7 13573 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13574 r_type = R_PPC64_NONE;
13575 }
13576 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13577 }
13578 }
13579 else
13580 {
13581 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13582 {
4ce794b7 13583 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13584 r_type = R_PPC64_NONE;
951fd09b 13585 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13586 }
411e1bfb
AM		 13587 }
13588 break;
13589
13590 case R_PPC64_TPREL64:
951fd09b 13591 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13592 {
13593 r_type = R_PPC64_NONE;
13594 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13595 }
13596 break;
52a82034
AM		 13597
13598 case R_PPC64_REL16_HA:
13599 /* If we are generating a non-PIC executable, edit
13600 . 0: addis 2,12,.TOC.-0b@ha
13601 . addi 2,2,.TOC.-0b@l
13602 used by ELFv2 global entry points to set up r2, to
13603 . lis 2,.TOC.@ha
13604 . addi 2,2,.TOC.@l
13605 if .TOC. is in range. */
13606 if (!info->shared
810d4e75 13607 && !info->traditional_format
52a82034
AM		 13608 && h != NULL && &h->elf == htab->elf.hgot
13609 && rel + 1 < relend
13610 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13611 && rel[1].r_offset == rel->r_offset + 4
13612 && rel[1].r_addend == rel->r_addend + 4
13613 && relocation + 0x80008000 <= 0xffffffff)
13614 {
13615 unsigned int insn1, insn2;
13616 bfd_vma offset = rel->r_offset - d_offset;
13617 insn1 = bfd_get_32 (output_bfd, contents + offset);
13618 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13619 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13620 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13621 {
13622 r_type = R_PPC64_ADDR16_HA;
13623 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13624 rel->r_addend -= d_offset;
13625 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13626 rel[1].r_addend -= d_offset + 4;
13627 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13628 }
13629 }
13630 break;
411e1bfb
AM		 13631 }
13632
13633 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 13634 insn = 0;
b25116a9
AM		 13635 max_br_offset = 1 << 25;
13636 addend = rel->r_addend;
bc30df16 13637 reloc_dest = DEST_NORMAL;
65f38f15 13638 switch (r_type)
5bd4f169
AM		 13639 {
13640 default:
65f38f15 13641 break;
5bd4f169 13642
3b421ab3
AM		 13643 case R_PPC64_TOCSAVE:
13644 if (relocation + addend == (rel->r_offset
13645 + input_section->output_offset
13646 + input_section->output_section->vma)
13647 && tocsave_find (htab, NO_INSERT,
13648 &local_syms, rel, input_bfd))
13649 {
13650 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13651 if (insn == NOP
13652 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 13653 bfd_put_32 (input_bfd,
13654 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 13655 contents + rel->r_offset);
13656 }
13657 break;
13658
65f38f15
AM		 13659 /* Branch taken prediction relocations. */
13660 case R_PPC64_ADDR14_BRTAKEN:
13661 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 13662 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13663 /* Fall thru. */
65f38f15 13664
86c76c7b 13665 /* Branch not taken prediction relocations. */
65f38f15
AM		 13666 case R_PPC64_ADDR14_BRNTAKEN:
13667 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 13668 insn |= bfd_get_32 (output_bfd,
13669 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 13670 /* Fall thru. */
86c76c7b 13671
b25116a9
AM		 13672 case R_PPC64_REL14:
13673 max_br_offset = 1 << 15;
13674 /* Fall thru. */
5bd4f169 13675
65f38f15 13676 case R_PPC64_REL24:
ad8e1ba5
AM		 13677 /* Calls to functions with a different TOC, such as calls to
13678 shared objects, need to alter the TOC pointer. This is
13679 done using a linkage stub. A REL24 branching to these
13680 linkage stubs needs to be followed by a nop, as the nop
13681 will be replaced with an instruction to restore the TOC
13682 base pointer. */
8387904d 13683 fdh = h;
b31867b6
AM		 13684 if (h != NULL
13685 && h->oh != NULL
13686 && h->oh->is_func_descriptor)
13687 fdh = ppc_follow_link (h->oh);
31c76678
DK		 13688 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13689 htab);
6abec6bc 13690 if (stub_entry != NULL
ad8e1ba5 13691 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 13692 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 13693 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13694 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 13695 {
b25116a9 13696 bfd_boolean can_plt_call = FALSE;
721956f4 13697
ba8ca3e7
AM		 13698 /* All of these stubs will modify r2, so there must be a
13699 branch and link followed by a nop. The nop is
13700 replaced by an insn to restore r2. */
eea6121a 13701 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 13702 {
ba8ca3e7
AM		 13703 unsigned long br;
13704
13705 br = bfd_get_32 (input_bfd,
13706 contents + rel->r_offset);
13707 if ((br & 1) != 0)
41bd81ab 13708 {
ba8ca3e7
AM		 13709 unsigned long nop;
13710
13711 nop = bfd_get_32 (input_bfd,
13712 contents + rel->r_offset + 4);
13713 if (nop == NOP
13714 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 13715 {
ba8ca3e7
AM		 13716 if (h != NULL
13717 && (h == htab->tls_get_addr_fd
13718 || h == htab->tls_get_addr)
e7d1c40c 13719 && !htab->params->no_tls_get_addr_opt)
ba8ca3e7
AM		 13720 {
13721 /* Special stub used, leave nop alone. */
13722 }
13723 else
a078d95a
AM		 13724 bfd_put_32 (input_bfd,
13725 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 13726 contents + rel->r_offset + 4);
13727 can_plt_call = TRUE;
a7f2871e 13728 }
41bd81ab 13729 }
5bd4f169 13730 }
721956f4 13731
ba8ca3e7 13732 if (!can_plt_call && h != NULL)
721956f4 13733 {
ba8ca3e7
AM		 13734 const char *name = h->elf.root.root.string;
13735
13736 if (*name == '.')
13737 ++name;
13738
13739 if (strncmp (name, "__libc_start_main", 17) == 0
13740 && (name[17] == 0 || name[17] == '@'))
6ab189d5 13741 {
ba8ca3e7
AM		 13742 /* Allow crt1 branch to go via a toc adjusting
13743 stub. Other calls that never return could do
13744 the same, if we could detect such. */
b25116a9 13745 can_plt_call = TRUE;
6ab189d5 13746 }
ba8ca3e7
AM		 13747 }
13748
13749 if (!can_plt_call)
13750 {
13751 /* g++ as of 20130507 emits self-calls without a
13752 following nop. This is arguably wrong since we
13753 have conflicting information. On the one hand a
13754 global symbol and on the other a local call
13755 sequence, but don't error for this special case.
13756 It isn't possible to cheaply verify we have
13757 exactly such a call. Allow all calls to the same
13758 section. */
13759 asection *code_sec = sec;
13760
13761 if (get_opd_info (sec) != NULL)
ad8e1ba5 13762 {
ba8ca3e7
AM		 13763 bfd_vma off = (relocation + addend
13764 - sec->output_section->vma
13765 - sec->output_offset);
bc30df16 13766
ba8ca3e7 13767 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 13768 }
ba8ca3e7
AM		 13769 if (code_sec == input_section)
13770 can_plt_call = TRUE;
13771 }
13772
13773 if (!can_plt_call)
13774 {
13775 info->callbacks->einfo
13776 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
1a1fb627 13777 "recompile with -fPIC\n"),
ba8ca3e7
AM		 13778 input_bfd, input_section, rel->r_offset, sym_name);
13779
13780 bfd_set_error (bfd_error_bad_value);
13781 ret = FALSE;
721956f4
AM		 13782 }
13783
b25116a9 13784 if (can_plt_call
794e51c0
AM		 13785 && (stub_entry->stub_type == ppc_stub_plt_call
13786 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13787 unresolved_reloc = FALSE;
13788 }
13789
6abec6bc
AM		 13790 if ((stub_entry == NULL
13791 || stub_entry->stub_type == ppc_stub_long_branch
13792 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13793 && get_opd_info (sec) != NULL)
13794 {
13795 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13796 bfd_vma off = (relocation + addend
13797 - sec->output_section->vma
13798 - sec->output_offset);
aef36ac1 13799 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13800 if (dest != (bfd_vma) -1)
13801 {
13802 relocation = dest;
13803 addend = 0;
bc30df16 13804 reloc_dest = DEST_OPD;
8387904d
AM		 13805 }
13806 }
13807
b25116a9
AM		 13808 /* If the branch is out of reach we ought to have a long
13809 branch stub. */
13810 from = (rel->r_offset
13811 + input_section->output_offset
13812 + input_section->output_section->vma);
13813
6911b7dc
AM		 13814 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13815 ? fdh->elf.other
13816 : sym->st_other);
13817
6abec6bc
AM		 13818 if (stub_entry != NULL
13819 && (stub_entry->stub_type == ppc_stub_long_branch
13820 || stub_entry->stub_type == ppc_stub_plt_branch)
13821 && (r_type == R_PPC64_ADDR14_BRTAKEN
13822 || r_type == R_PPC64_ADDR14_BRNTAKEN
13823 || (relocation + addend - from + max_br_offset
13824 < 2 * max_br_offset)))
13825 /* Don't use the stub if this branch is in range. */
13826 stub_entry = NULL;
b25116a9
AM		 13827
13828 if (stub_entry != NULL)
13829 {
13830 /* Munge up the value and addend so that we call the stub
13831 rather than the procedure directly. */
13832 relocation = (stub_entry->stub_offset
13833 + stub_entry->stub_sec->output_offset
13834 + stub_entry->stub_sec->output_section->vma);
13835 addend = 0;
bc30df16 13836 reloc_dest = DEST_STUB;
3b421ab3 13837
794e51c0
AM		 13838 if ((stub_entry->stub_type == ppc_stub_plt_call
13839 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13840 && (ALWAYS_EMIT_R2SAVE
13841 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13842 && rel + 1 < relend
13843 && rel[1].r_offset == rel->r_offset + 4
13844 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13845 relocation += 4;
b25116a9
AM		 13846 }
13847
13848 if (insn != 0)
13849 {
794e51c0 13850 if (is_isa_v2)
721956f4 13851 {
b25116a9
AM		 13852 /* Set 'a' bit. This is 0b00010 in BO field for branch
13853 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13854 for branch on CTR insns (BO == 1a00t or 1a01t). */
13855 if ((insn & (0x14 << 21)) == (0x04 << 21))
13856 insn |= 0x02 << 21;
13857 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13858 insn |= 0x08 << 21;
13859 else
13860 break;
13861 }
13862 else
13863 {
13864 /* Invert 'y' bit if not the default. */
4cc603a5 13865 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13866 insn ^= 0x01 << 21;
721956f4 13867 }
b25116a9
AM		 13868
13869 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13870 }
e86ce104 13871
06da1e8e
AM		 13872 /* NOP out calls to undefined weak functions.
13873 We can thus call a weak function without first
13874 checking whether the function is defined. */
b25116a9 13875 else if (h != NULL
039b3fef 13876 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13877 && h->elf.dynindx == -1
b25116a9
AM		 13878 && r_type == R_PPC64_REL24
13879 && relocation == 0
4cc603a5 13880 && addend == 0)
e86ce104 13881 {
06da1e8e
AM		 13882 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13883 continue;
e86ce104 13884 }
65f38f15
AM		 13885 break;
13886 }
5bd4f169 13887
65f38f15 13888 /* Set `addend'. */
411e1bfb 13889 tls_type = 0;
65f38f15
AM		 13890 switch (r_type)
13891 {
13892 default:
25f53a85 13893 info->callbacks->einfo
bc30df16 13894 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13895 input_bfd, (int) r_type, sym_name);
5bd4f169 13896
65f38f15 13897 bfd_set_error (bfd_error_bad_value);
b34976b6 13898 ret = FALSE;
65f38f15 13899 continue;
5bd4f169 13900
65f38f15 13901 case R_PPC64_NONE:
411e1bfb 13902 case R_PPC64_TLS:
727fc41e
AM		 13903 case R_PPC64_TLSGD:
13904 case R_PPC64_TLSLD:
3b421ab3 13905 case R_PPC64_TOCSAVE:
04c9666a
AM		 13906 case R_PPC64_GNU_VTINHERIT:
13907 case R_PPC64_GNU_VTENTRY:
65f38f15 13908 continue;
5bd4f169
AM		 13909
13910 /* GOT16 relocations. Like an ADDR16 using the symbol's
13911 address in the GOT as relocation value instead of the
411e1bfb 13912 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13913 symbol and put the symbol value there. */
411e1bfb
AM		 13914 case R_PPC64_GOT_TLSGD16:
13915 case R_PPC64_GOT_TLSGD16_LO:
13916 case R_PPC64_GOT_TLSGD16_HI:
13917 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13918 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 13919 goto dogot;
13920
13921 case R_PPC64_GOT_TLSLD16:
13922 case R_PPC64_GOT_TLSLD16_LO:
13923 case R_PPC64_GOT_TLSLD16_HI:
13924 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13925 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 13926 goto dogot;
13927
13928 case R_PPC64_GOT_TPREL16_DS:
13929 case R_PPC64_GOT_TPREL16_LO_DS:
13930 case R_PPC64_GOT_TPREL16_HI:
13931 case R_PPC64_GOT_TPREL16_HA:
13932 tls_type = TLS_TLS | TLS_TPREL;
13933 goto dogot;
13934
13935 case R_PPC64_GOT_DTPREL16_DS:
13936 case R_PPC64_GOT_DTPREL16_LO_DS:
13937 case R_PPC64_GOT_DTPREL16_HI:
13938 case R_PPC64_GOT_DTPREL16_HA:
13939 tls_type = TLS_TLS | TLS_DTPREL;
13940 goto dogot;
13941
65f38f15
AM		 13942 case R_PPC64_GOT16:
13943 case R_PPC64_GOT16_LO:
13944 case R_PPC64_GOT16_HI:
13945 case R_PPC64_GOT16_HA:
13946 case R_PPC64_GOT16_DS:
13947 case R_PPC64_GOT16_LO_DS:
411e1bfb 13948 dogot:
5bd4f169
AM		 13949 {
13950 /* Relocation is to the entry for this symbol in the global
13951 offset table. */
e717da7e 13952 asection *got;
d881513a 13953 bfd_vma *offp;
5bd4f169 13954 bfd_vma off;
d881513a 13955 unsigned long indx = 0;
927be08e 13956 struct got_entry *ent;
65f38f15 13957
d881513a
AM		 13958 if (tls_type == (TLS_TLS | TLS_LD)
13959 && (h == NULL
f5385ebf 13960 || !h->elf.def_dynamic))
927be08e 13961 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13962 else
5bd4f169 13963 {
5bd4f169 13964
d881513a
AM		 13965 if (h != NULL)
13966 {
13967 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 13968 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13969 &h->elf)
d881513a 13970 || (info->shared
afe397ea 13971 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 13972 /* This is actually a static link, or it is a
13973 -Bsymbolic link and the symbol is defined
13974 locally, or the symbol was forced to be local
13975 because of a version file. */
13976 ;
13977 else
13978 {
14acf4dc 13979 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 13980 indx = h->elf.dynindx;
d881513a
AM		 13981 unresolved_reloc = FALSE;
13982 }
039b3fef 13983 ent = h->elf.got.glist;
d881513a 13984 }
411e1bfb 13985 else
5bd4f169 13986 {
d881513a
AM		 13987 if (local_got_ents == NULL)
13988 abort ();
13989 ent = local_got_ents[r_symndx];
5bd4f169 13990 }
d881513a
AM		 13991
13992 for (; ent != NULL; ent = ent->next)
31c76678 13993 if (ent->addend == orig_rel.r_addend
e717da7e 13994 && ent->owner == input_bfd
d881513a
AM		 13995 && ent->tls_type == tls_type)
13996 break;
5bd4f169 13997 }
411e1bfb 13998
927be08e
AM		 13999 if (ent == NULL)
14000 abort ();
14001 if (ent->is_indirect)
14002 ent = ent->got.ent;
14003 offp = &ent->got.offset;
14004 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 14005 if (got == NULL)
14006 abort ();
14007
411e1bfb
AM		 14008 /* The offset must always be a multiple of 8. We use the
14009 least significant bit to record whether we have already
14010 processed this entry. */
d881513a 14011 off = *offp;
411e1bfb
AM		 14012 if ((off & 1) != 0)
14013 off &= ~1;
5bd4f169
AM		 14014 else
14015 {
411e1bfb
AM		 14016 /* Generate relocs for the dynamic linker, except in
14017 the case of TLSLD where we'll use one entry per
14018 module. */
25f23106
AM		 14019 asection *relgot;
14020 bfd_boolean ifunc;
e717da7e 14021
d881513a 14022 *offp = off | 1;
25f23106
AM		 14023 relgot = NULL;
14024 ifunc = (h != NULL
14025 ? h->elf.type == STT_GNU_IFUNC
14026 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14027 if (ifunc)
33e44f2e 14028 relgot = htab->elf.irelplt;
19e08130
AM		 14029 else if ((info->shared || indx != 0)
14030 && (h == NULL
14031 || (tls_type == (TLS_TLS | TLS_LD)
14032 && !h->elf.def_dynamic)
14033 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14034 || h->elf.root.type != bfd_link_hash_undefweak))
14035 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14036 if (relgot != NULL)
5bd4f169 14037 {
e717da7e
AM		 14038 outrel.r_offset = (got->output_section->vma
14039 + got->output_offset
411e1bfb 14040 + off);
4cc603a5 14041 outrel.r_addend = addend;
d881513a 14042 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14043 {
411e1bfb 14044 outrel.r_addend = 0;
e515b051 14045 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14046 if (tls_type == (TLS_TLS | TLS_GD))
14047 {
e717da7e
AM		 14048 loc = relgot->contents;
14049 loc += (relgot->reloc_count++
d881513a
AM		 14050 * sizeof (Elf64_External_Rela));
14051 bfd_elf64_swap_reloca_out (output_bfd,
14052 &outrel, loc);
e515b051 14053 outrel.r_offset += 8;
4cc603a5 14054 outrel.r_addend = addend;
d881513a
AM		 14055 outrel.r_info
14056 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14057 }
411e1bfb 14058 }
951fd09b 14059 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14060 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14061 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14062 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14063 else if (indx != 0)
14064 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14065 else
81407a69 14066 {
25f23106
AM		 14067 if (ifunc)
14068 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14069 else
14070 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14071
14072 /* Write the .got section contents for the sake
14073 of prelink. */
e717da7e 14074 loc = got->contents + off;
23fbd6fa
JJ		 14075 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14076 loc);
81407a69 14077 }
81407a69
AM		 14078
14079 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14080 {
14081 outrel.r_addend += relocation;
14082 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 14083 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 14084 }
e717da7e
AM		 14085 loc = relgot->contents;
14086 loc += (relgot->reloc_count++
411e1bfb
AM		 14087 * sizeof (Elf64_External_Rela));
14088 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14089 }
14090
ad8e1ba5 14091 /* Init the .got section contents here if we're not
81407a69 14092 emitting a reloc. */
d881513a 14093 else
411e1bfb 14094 {
4cc603a5 14095 relocation += addend;
7b609f53
AM		 14096 if (tls_type == (TLS_TLS | TLS_LD))
14097 relocation = 1;
14098 else if (tls_type != 0)
411e1bfb 14099 {
e1918d23 14100 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 14101 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14102 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 14103
7b609f53
AM		 14104 if (tls_type == (TLS_TLS | TLS_GD))
14105 {
14106 bfd_put_64 (output_bfd, relocation,
e717da7e 14107 got->contents + off + 8);
7b609f53
AM		 14108 relocation = 1;
14109 }
411e1bfb 14110 }
7b609f53 14111
411e1bfb 14112 bfd_put_64 (output_bfd, relocation,
e717da7e 14113 got->contents + off);
5bd4f169
AM		 14114 }
14115 }
14116
65f38f15
AM		 14117 if (off >= (bfd_vma) -2)
14118 abort ();
14119
bf102f86
AM		 14120 relocation = got->output_section->vma + got->output_offset + off;
14121 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 14122 }
65f38f15
AM		 14123 break;
14124
14125 case R_PPC64_PLT16_HA:
14126 case R_PPC64_PLT16_HI:
14127 case R_PPC64_PLT16_LO:
14128 case R_PPC64_PLT32:
14129 case R_PPC64_PLT64:
14130 /* Relocation is to the entry for this symbol in the
14131 procedure linkage table. */
14132
14133 /* Resolve a PLT reloc against a local symbol directly,
14134 without using the procedure linkage table. */
14135 if (h == NULL)
14136 break;
14137
411e1bfb
AM		 14138 /* It's possible that we didn't make a PLT entry for this
14139 symbol. This happens when statically linking PIC code,
14140 or when using -Bsymbolic. Go find a match if there is a
14141 PLT entry. */
33e44f2e 14142 if (htab->elf.splt != NULL)
65f38f15 14143 {
411e1bfb 14144 struct plt_entry *ent;
039b3fef 14145 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14146 if (ent->plt.offset != (bfd_vma) -1
14147 && ent->addend == orig_rel.r_addend)
411e1bfb 14148 {
33e44f2e
AM		 14149 relocation = (htab->elf.splt->output_section->vma
14150 + htab->elf.splt->output_offset
411e1bfb
AM		 14151 + ent->plt.offset);
14152 unresolved_reloc = FALSE;
a345bc8d 14153 break;
411e1bfb 14154 }
65f38f15 14155 }
65f38f15 14156 break;
5bd4f169 14157
0b13192e
AM		 14158 case R_PPC64_TOC:
14159 /* Relocation value is TOC base. */
14160 relocation = TOCstart;
cf35638d 14161 if (r_symndx == STN_UNDEF)
0b13192e 14162 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 14163 else if (unresolved_reloc)
14164 ;
14165 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 14166 relocation += htab->stub_group[sec->id].toc_off;
14167 else
14168 unresolved_reloc = TRUE;
ab96bf03 14169 goto dodyn;
0b13192e 14170
5bd4f169
AM		 14171 /* TOC16 relocs. We want the offset relative to the TOC base,
14172 which is the address of the start of the TOC plus 0x8000.
14173 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14174 in this order. */
65f38f15
AM		 14175 case R_PPC64_TOC16:
14176 case R_PPC64_TOC16_LO:
14177 case R_PPC64_TOC16_HI:
14178 case R_PPC64_TOC16_DS:
14179 case R_PPC64_TOC16_LO_DS:
14180 case R_PPC64_TOC16_HA:
ad8e1ba5 14181 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 14182 break;
14183
14184 /* Relocate against the beginning of the section. */
65f38f15
AM		 14185 case R_PPC64_SECTOFF:
14186 case R_PPC64_SECTOFF_LO:
14187 case R_PPC64_SECTOFF_HI:
14188 case R_PPC64_SECTOFF_DS:
14189 case R_PPC64_SECTOFF_LO_DS:
14190 case R_PPC64_SECTOFF_HA:
4ce794b7 14191 if (sec != NULL)
65f38f15 14192 addend -= sec->output_section->vma;
5bd4f169
AM		 14193 break;
14194
25f23106
AM		 14195 case R_PPC64_REL16:
14196 case R_PPC64_REL16_LO:
14197 case R_PPC64_REL16_HI:
14198 case R_PPC64_REL16_HA:
14199 break;
14200
721956f4
AM		 14201 case R_PPC64_REL14:
14202 case R_PPC64_REL14_BRNTAKEN:
14203 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14204 case R_PPC64_REL24:
14205 break;
14206
411e1bfb
AM		 14207 case R_PPC64_TPREL16:
14208 case R_PPC64_TPREL16_LO:
14209 case R_PPC64_TPREL16_HI:
14210 case R_PPC64_TPREL16_HA:
14211 case R_PPC64_TPREL16_DS:
14212 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14213 case R_PPC64_TPREL16_HIGH:
14214 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14215 case R_PPC64_TPREL16_HIGHER:
14216 case R_PPC64_TPREL16_HIGHERA:
14217 case R_PPC64_TPREL16_HIGHEST:
14218 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14219 if (h != NULL
14220 && h->elf.root.type == bfd_link_hash_undefweak
14221 && h->elf.dynindx == -1)
14222 {
14223 /* Make this relocation against an undefined weak symbol
14224 resolve to zero. This is really just a tweak, since
14225 code using weak externs ought to check that they are
14226 defined before using them. */
14227 bfd_byte *p = contents + rel->r_offset - d_offset;
14228
14229 insn = bfd_get_32 (output_bfd, p);
14230 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14231 if (insn != 0)
14232 bfd_put_32 (output_bfd, insn, p);
14233 break;
14234 }
e1918d23 14235 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14236 if (info->shared)
14237 /* The TPREL16 relocs shouldn't really be used in shared
14238 libs as they will result in DT_TEXTREL being set, but
14239 support them anyway. */
14240 goto dodyn;
14241 break;
14242
14243 case R_PPC64_DTPREL16:
14244 case R_PPC64_DTPREL16_LO:
14245 case R_PPC64_DTPREL16_HI:
14246 case R_PPC64_DTPREL16_HA:
14247 case R_PPC64_DTPREL16_DS:
14248 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14249 case R_PPC64_DTPREL16_HIGH:
14250 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14251 case R_PPC64_DTPREL16_HIGHER:
14252 case R_PPC64_DTPREL16_HIGHERA:
14253 case R_PPC64_DTPREL16_HIGHEST:
14254 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 14255 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14256 break;
14257
45965137
AM		 14258 case R_PPC64_ADDR64_LOCAL:
14259 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14260 ? h->elf.other
14261 : sym->st_other);
14262 break;
14263
e515b051
AM		 14264 case R_PPC64_DTPMOD64:
14265 relocation = 1;
14266 addend = 0;
14267 goto dodyn;
14268
411e1bfb 14269 case R_PPC64_TPREL64:
e1918d23 14270 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14271 goto dodyn;
14272
14273 case R_PPC64_DTPREL64:
e1918d23 14274 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14275 /* Fall thru */
14276
65f38f15
AM		 14277 /* Relocations that may need to be propagated if this is a
14278 dynamic object. */
04c9666a 14279 case R_PPC64_REL30:
65f38f15
AM		 14280 case R_PPC64_REL32:
14281 case R_PPC64_REL64:
14282 case R_PPC64_ADDR14:
14283 case R_PPC64_ADDR14_BRNTAKEN:
14284 case R_PPC64_ADDR14_BRTAKEN:
14285 case R_PPC64_ADDR16:
14286 case R_PPC64_ADDR16_DS:
14287 case R_PPC64_ADDR16_HA:
14288 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14289 case R_PPC64_ADDR16_HIGH:
14290 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14291 case R_PPC64_ADDR16_HIGHER:
14292 case R_PPC64_ADDR16_HIGHERA:
14293 case R_PPC64_ADDR16_HIGHEST:
14294 case R_PPC64_ADDR16_HIGHESTA:
14295 case R_PPC64_ADDR16_LO:
14296 case R_PPC64_ADDR16_LO_DS:
14297 case R_PPC64_ADDR24:
65f38f15
AM		 14298 case R_PPC64_ADDR32:
14299 case R_PPC64_ADDR64:
14300 case R_PPC64_UADDR16:
14301 case R_PPC64_UADDR32:
14302 case R_PPC64_UADDR64:
411e1bfb 14303 dodyn:
5d1634d7 14304 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14305 break;
14306
41bd81ab
AM		 14307 if (NO_OPD_RELOCS && is_opd)
14308 break;
14309
65f38f15 14310 if ((info->shared
4e795f50 14311 && (h == NULL
039b3fef
AM		 14312 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14313 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14314 && (must_be_dyn_reloc (info, r_type)
039b3fef 14315 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 14316 || (ELIMINATE_COPY_RELOCS
14317 && !info->shared
65f38f15 14318 && h != NULL
039b3fef 14319 && h->elf.dynindx != -1
f5385ebf 14320 && !h->elf.non_got_ref
25f23106
AM		 14321 && !h->elf.def_regular)
14322 || (!info->shared
14323 && (h != NULL
14324 ? h->elf.type == STT_GNU_IFUNC
14325 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14326 {
b34976b6 14327 bfd_boolean skip, relocate;
65f38f15 14328 asection *sreloc;
1cf1f670 14329 bfd_vma out_off;
65f38f15
AM		 14330
14331 /* When generating a dynamic object, these relocations
14332 are copied into the output file to be resolved at run
14333 time. */
14334
b34976b6
AM		 14335 skip = FALSE;
14336 relocate = FALSE;
65f38f15 14337
1cf1f670
AM		 14338 out_off = _bfd_elf_section_offset (output_bfd, info,
14339 input_section, rel->r_offset);
14340 if (out_off == (bfd_vma) -1)
b34976b6 14341 skip = TRUE;
1cf1f670 14342 else if (out_off == (bfd_vma) -2)
b34976b6 14343 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14344 out_off += (input_section->output_section->vma
14345 + input_section->output_offset);
14346 outrel.r_offset = out_off;
411e1bfb 14347 outrel.r_addend = rel->r_addend;
65f38f15 14348
1cf1f670
AM		 14349 /* Optimize unaligned reloc use. */
14350 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14351 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14352 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14353 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14354 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14355 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14356 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14357 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14358 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14359
65f38f15 14360 if (skip)
0bb2d96a 14361 memset (&outrel, 0, sizeof outrel);
afe397ea 14362 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14363 && !is_opd
14364 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14365 {
14366 BFD_ASSERT (h->elf.dynindx != -1);
14367 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14368 }
65f38f15
AM		 14369 else
14370 {
41bd81ab
AM		 14371 /* This symbol is local, or marked to become local,
14372 or this is an opd section reloc which must point
14373 at a local function. */
65f38f15 14374 outrel.r_addend += relocation;
e86ce104 14375 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14376 {
3fad3c7c 14377 if (is_opd && h != NULL)
afbe61cf
AM		 14378 {
14379 /* Lie about opd entries. This case occurs
14380 when building shared libraries and we
14381 reference a function in another shared
3fad3c7c
AM		 14382 lib. The same thing happens for a weak
14383 definition in an application that's
14384 overridden by a strong definition in a
14385 shared lib. (I believe this is a generic
14386 bug in binutils handling of weak syms.)
14387 In these cases we won't use the opd
1e2f5b6e 14388 entry in this lib. */
b34976b6 14389 unresolved_reloc = FALSE;
afbe61cf 14390 }
25f23106
AM		 14391 if (!is_opd
14392 && r_type == R_PPC64_ADDR64
14393 && (h != NULL
14394 ? h->elf.type == STT_GNU_IFUNC
14395 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14396 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14397 else
14398 {
14399 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14400
25f23106
AM		 14401 /* We need to relocate .opd contents for ld.so.
14402 Prelink also wants simple and consistent rules
14403 for relocs. This make all RELATIVE relocs have
14404 *r_offset equal to r_addend. */
14405 relocate = TRUE;
14406 }
65f38f15
AM		 14407 }
14408 else
14409 {
14410 long indx = 0;
14411
25f23106
AM		 14412 if (h != NULL
14413 ? h->elf.type == STT_GNU_IFUNC
14414 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14415 {
25f53a85 14416 info->callbacks->einfo
bc30df16
AM		 14417 (_("%P: %H: %s for indirect "
14418 "function `%T' unsupported\n"),
25f53a85 14419 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14420 ppc64_elf_howto_table[r_type]->name,
14421 sym_name);
14422 ret = FALSE;
14423 }
cf35638d 14424 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14425 ;
14426 else if (sec == NULL || sec->owner == NULL)
14427 {
14428 bfd_set_error (bfd_error_bad_value);
b34976b6 14429 return FALSE;
65f38f15
AM		 14430 }
14431 else
14432 {
14433 asection *osec;
14434
14435 osec = sec->output_section;
14436 indx = elf_section_data (osec)->dynindx;
14437
74541ad4
AM		 14438 if (indx == 0)
14439 {
14440 if ((osec->flags & SEC_READONLY) == 0
14441 && htab->elf.data_index_section != NULL)
14442 osec = htab->elf.data_index_section;
14443 else
14444 osec = htab->elf.text_index_section;
14445 indx = elf_section_data (osec)->dynindx;
14446 }
14447 BFD_ASSERT (indx != 0);
14448
65f38f15
AM		 14449 /* We are turning this relocation into one
14450 against a section symbol, so subtract out
14451 the output section's address but not the
14452 offset of the input section in the output
14453 section. */
14454 outrel.r_addend -= osec->vma;
14455 }
14456
14457 outrel.r_info = ELF64_R_INFO (indx, r_type);
14458 }
14459 }
14460
14461 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14462 if (h != NULL
14463 ? h->elf.type == STT_GNU_IFUNC
14464 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14465 sreloc = htab->elf.irelplt;
65f38f15
AM		 14466 if (sreloc == NULL)
14467 abort ();
14468
dfbb6ac9
AM		 14469 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14470 >= sreloc->size)
14471 abort ();
947216bf
AM		 14472 loc = sreloc->contents;
14473 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14474 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14475
14476 /* If this reloc is against an external symbol, it will
14477 be computed at runtime, so there's no need to do
81407a69
AM		 14478 anything now. However, for the sake of prelink ensure
14479 that the section contents are a known value. */
65f38f15 14480 if (! relocate)
81407a69
AM		 14481 {
14482 unresolved_reloc = FALSE;
14483 /* The value chosen here is quite arbitrary as ld.so
14484 ignores section contents except for the special
14485 case of .opd where the contents might be accessed
14486 before relocation. Choose zero, as that won't
14487 cause reloc overflow. */
14488 relocation = 0;
14489 addend = 0;
14490 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14491 to improve backward compatibility with older
14492 versions of ld. */
14493 if (r_type == R_PPC64_ADDR64)
14494 addend = outrel.r_addend;
14495 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14496 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14497 addend = (input_section->output_section->vma
14498 + input_section->output_offset
14499 + rel->r_offset);
81407a69 14500 }
65f38f15 14501 }
5bd4f169
AM		 14502 break;
14503
65f38f15
AM		 14504 case R_PPC64_COPY:
14505 case R_PPC64_GLOB_DAT:
14506 case R_PPC64_JMP_SLOT:
25f23106 14507 case R_PPC64_JMP_IREL:
65f38f15
AM		 14508 case R_PPC64_RELATIVE:
14509 /* We shouldn't ever see these dynamic relocs in relocatable
14510 files. */
ae9a127f 14511 /* Fall through. */
65f38f15
AM		 14512
14513 case R_PPC64_PLTGOT16:
14514 case R_PPC64_PLTGOT16_DS:
14515 case R_PPC64_PLTGOT16_HA:
14516 case R_PPC64_PLTGOT16_HI:
14517 case R_PPC64_PLTGOT16_LO:
14518 case R_PPC64_PLTGOT16_LO_DS:
14519 case R_PPC64_PLTREL32:
14520 case R_PPC64_PLTREL64:
14521 /* These ones haven't been implemented yet. */
14522
25f53a85 14523 info->callbacks->einfo
bc30df16 14524 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14525 input_bfd,
4ce794b7 14526 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14527
14528 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14529 ret = FALSE;
5bd4f169 14530 continue;
65f38f15 14531 }
5bd4f169 14532
67f0cbdb
AM		 14533 /* Multi-instruction sequences that access the TOC can be
14534 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14535 to nop; addi rb,r2,x; */
14536 switch (r_type)
14537 {
14538 default:
14539 break;
14540
14541 case R_PPC64_GOT_TLSLD16_HI:
14542 case R_PPC64_GOT_TLSGD16_HI:
14543 case R_PPC64_GOT_TPREL16_HI:
14544 case R_PPC64_GOT_DTPREL16_HI:
14545 case R_PPC64_GOT16_HI:
14546 case R_PPC64_TOC16_HI:
14547 /* These relocs would only be useful if building up an
14548 offset to later add to r2, perhaps in an indexed
14549 addressing mode instruction. Don't try to optimize.
14550 Unfortunately, the possibility of someone building up an
14551 offset like this or even with the HA relocs, means that
14552 we need to check the high insn when optimizing the low
14553 insn. */
14554 break;
14555
14556 case R_PPC64_GOT_TLSLD16_HA:
14557 case R_PPC64_GOT_TLSGD16_HA:
14558 case R_PPC64_GOT_TPREL16_HA:
14559 case R_PPC64_GOT_DTPREL16_HA:
14560 case R_PPC64_GOT16_HA:
14561 case R_PPC64_TOC16_HA:
98528052 14562 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14563 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14564 {
14565 bfd_byte *p = contents + (rel->r_offset & ~3);
14566 bfd_put_32 (input_bfd, NOP, p);
14567 }
67f0cbdb
AM		 14568 break;
14569
14570 case R_PPC64_GOT_TLSLD16_LO:
14571 case R_PPC64_GOT_TLSGD16_LO:
14572 case R_PPC64_GOT_TPREL16_LO_DS:
14573 case R_PPC64_GOT_DTPREL16_LO_DS:
14574 case R_PPC64_GOT16_LO:
14575 case R_PPC64_GOT16_LO_DS:
14576 case R_PPC64_TOC16_LO:
14577 case R_PPC64_TOC16_LO_DS:
98528052 14578 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14579 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14580 {
14581 bfd_byte *p = contents + (rel->r_offset & ~3);
14582 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14583 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14584 {
14585 /* Transform addic to addi when we change reg. */
14586 insn &= ~((0x3f << 26) | (0x1f << 16));
14587 insn |= (14u << 26) | (2 << 16);
14588 }
14589 else
67f0cbdb 14590 {
98528052
AM		 14591 insn &= ~(0x1f << 16);
14592 insn |= 2 << 16;
67f0cbdb 14593 }
560c8763 14594 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14595 }
14596 break;
14597 }
14598
65f38f15 14599 /* Do any further special processing. */
b80eed39 14600 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14601 switch (r_type)
14602 {
14603 default:
14604 break;
14605
25f23106 14606 case R_PPC64_REL16_HA:
f9c6b907
AM		 14607 case R_PPC64_ADDR16_HA:
14608 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14609 case R_PPC64_ADDR16_HIGHERA:
14610 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14611 case R_PPC64_TOC16_HA:
14612 case R_PPC64_SECTOFF_HA:
411e1bfb 14613 case R_PPC64_TPREL16_HA:
f9c6b907 14614 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14615 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14616 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14617 case R_PPC64_DTPREL16_HA:
14618 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14619 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14620 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14621 /* It's just possible that this symbol is a weak symbol
14622 that's not actually defined anywhere. In that case,
14623 'sec' would be NULL, and we should leave the symbol
14624 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14625 if (sec == NULL)
14626 break;
14627 /* Fall thru */
14628
14629 case R_PPC64_GOT16_HA:
14630 case R_PPC64_PLTGOT16_HA:
14631 case R_PPC64_PLT16_HA:
14632 case R_PPC64_GOT_TLSGD16_HA:
14633 case R_PPC64_GOT_TLSLD16_HA:
14634 case R_PPC64_GOT_TPREL16_HA:
14635 case R_PPC64_GOT_DTPREL16_HA:
14636 /* Add 0x10000 if sign bit in 0:15 is set.
14637 Bits 0:15 are not used. */
14638 addend += 0x8000;
65f38f15
AM		 14639 break;
14640
14641 case R_PPC64_ADDR16_DS:
14642 case R_PPC64_ADDR16_LO_DS:
14643 case R_PPC64_GOT16_DS:
14644 case R_PPC64_GOT16_LO_DS:
14645 case R_PPC64_PLT16_LO_DS:
14646 case R_PPC64_SECTOFF_DS:
14647 case R_PPC64_SECTOFF_LO_DS:
14648 case R_PPC64_TOC16_DS:
14649 case R_PPC64_TOC16_LO_DS:
14650 case R_PPC64_PLTGOT16_DS:
14651 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14652 case R_PPC64_GOT_TPREL16_DS:
14653 case R_PPC64_GOT_TPREL16_LO_DS:
14654 case R_PPC64_GOT_DTPREL16_DS:
14655 case R_PPC64_GOT_DTPREL16_LO_DS:
14656 case R_PPC64_TPREL16_DS:
14657 case R_PPC64_TPREL16_LO_DS:
14658 case R_PPC64_DTPREL16_DS:
14659 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14660 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14661 mask = 3;
14662 /* If this reloc is against an lq insn, then the value must be
14663 a multiple of 16. This is somewhat of a hack, but the
14664 "correct" way to do this by defining _DQ forms of all the
14665 _DS relocs bloats all reloc switches in this file. It
14666 doesn't seem to make much sense to use any of these relocs
14667 in data, so testing the insn should be safe. */
494dac0c 14668 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14669 mask = 15;
14670 if (((relocation + addend) & mask) != 0)
65f38f15 14671 {
25f53a85 14672 info->callbacks->einfo
8de848d8 14673 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14674 input_bfd, input_section, rel->r_offset,
b80eed39 14675 howto->name,
adadcc0c 14676 mask + 1);
65f38f15 14677 bfd_set_error (bfd_error_bad_value);
b34976b6 14678 ret = FALSE;
65f38f15
AM		 14679 continue;
14680 }
14681 break;
5bd4f169
AM		 14682 }
14683
239e1f3a
AM		 14684 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14685 because such sections are not SEC_ALLOC and thus ld.so will
14686 not process them. */
65f38f15 14687 if (unresolved_reloc
239e1f3a 14688 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14689 && h->elf.def_dynamic)
14690 && _bfd_elf_section_offset (output_bfd, info, input_section,
14691 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14692 {
25f53a85 14693 info->callbacks->einfo
bc30df16 14694 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14695 input_bfd, input_section, rel->r_offset,
b80eed39 14696 howto->name,
039b3fef 14697 h->elf.root.root.string);
b34976b6 14698 ret = FALSE;
9c07fe7c 14699 }
5bd4f169 14700
b80eed39
AM		 14701 /* 16-bit fields in insns mostly have signed values, but a
14702 few insns have 16-bit unsigned values. Really, we should
14703 have different reloc types. */
14704 if (howto->complain_on_overflow != complain_overflow_dont
14705 && howto->dst_mask == 0xffff
14706 && (input_section->flags & SEC_CODE) != 0)
14707 {
14708 enum complain_overflow complain = complain_overflow_signed;
14709
14710 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14711 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14712 complain = complain_overflow_bitfield;
14713 else if (howto->rightshift == 0
14714 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14715 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14716 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14717 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14718 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14719 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14720 complain = complain_overflow_unsigned;
14721 if (howto->complain_on_overflow != complain)
14722 {
14723 alt_howto = *howto;
14724 alt_howto.complain_on_overflow = complain;
14725 howto = &alt_howto;
14726 }
14727 }
14728
14729 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14730 rel->r_offset, relocation, addend);
5bd4f169 14731
ef60b7ff 14732 if (r != bfd_reloc_ok)
5bd4f169 14733 {
bc30df16 14734 char *more_info = NULL;
b80eed39 14735 const char *reloc_name = howto->name;
bc30df16
AM		 14736
14737 if (reloc_dest != DEST_NORMAL)
14738 {
14739 more_info = bfd_malloc (strlen (reloc_name) + 8);
14740 if (more_info != NULL)
14741 {
14742 strcpy (more_info, reloc_name);
14743 strcat (more_info, (reloc_dest == DEST_OPD
14744 ? " (OPD)" : " (stub)"));
14745 reloc_name = more_info;
14746 }
14747 }
14748
cd27b276 14749 if (r == bfd_reloc_overflow)
5bd4f169 14750 {
cd27b276
AM		 14751 if (warned)
14752 continue;
14753 if (h != NULL
039b3fef 14754 && h->elf.root.type == bfd_link_hash_undefweak
b80eed39 14755 && howto->pc_relative)
5bd4f169
AM		 14756 {
14757 /* Assume this is a call protected by other code that
14758 detects the symbol is undefined. If this is the case,
14759 we can safely ignore the overflow. If not, the
14760 program is hosed anyway, and a little warning isn't
14761 going to help. */
14762
14763 continue;
14764 }
14765
ef60b7ff 14766 if (!((*info->callbacks->reloc_overflow)
bc30df16
AM		 14767 (info, &h->elf.root, sym_name,
14768 reloc_name, orig_rel.r_addend,
14769 input_bfd, input_section, rel->r_offset)))
b34976b6 14770 return FALSE;
ef60b7ff
AM		 14771 }
14772 else
14773 {
25f53a85 14774 info->callbacks->einfo
bc30df16 14775 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14776 input_bfd, input_section, rel->r_offset,
bc30df16 14777 reloc_name, sym_name, (int) r);
b34976b6 14778 ret = FALSE;
ef60b7ff 14779 }
bc30df16
AM		 14780 if (more_info != NULL)
14781 free (more_info);
5bd4f169 14782 }
5bd4f169
AM		 14783 }
14784
645ea6a9
AM		 14785 /* If we're emitting relocations, then shortly after this function
14786 returns, reloc offsets and addends for this section will be
14787 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14788 file rather than the input. Save a copy of the relocs for
14789 opd_entry_value. */
4cc603a5 14790 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 14791 {
14792 bfd_size_type amt;
14793 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14794 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14795 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14796 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14797 if (rel == NULL)
14798 return FALSE;
14799 memcpy (rel, relocs, amt);
14800 }
5bd4f169
AM		 14801 return ret;
14802}
14803
754021d0
AM		 14804/* Adjust the value of any local symbols in opd sections. */
14805
6e0b88f1 14806static int
754021d0
AM		 14807ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14808 const char *name ATTRIBUTE_UNUSED,
14809 Elf_Internal_Sym *elfsym,
14810 asection *input_sec,
14811 struct elf_link_hash_entry *h)
14812{
74f0fb50
AM		 14813 struct _opd_sec_data *opd;
14814 long adjust;
754021d0
AM		 14815 bfd_vma value;
14816
4025353c 14817 if (h != NULL)
6e0b88f1 14818 return 1;
4025353c 14819
74f0fb50
AM		 14820 opd = get_opd_info (input_sec);
14821 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14822 return 1;
754021d0
AM		 14823
14824 value = elfsym->st_value - input_sec->output_offset;
14825 if (!info->relocatable)
14826 value -= input_sec->output_section->vma;
14827
74f0fb50 14828 adjust = opd->adjust[value / 8];
4025353c 14829 if (adjust == -1)
6e0b88f1
AM		 14830 return 2;
14831
14832 elfsym->st_value += adjust;
14833 return 1;
754021d0
AM		 14834}
14835
5bd4f169
AM		 14836/* Finish up dynamic symbol handling. We set the contents of various
14837 dynamic sections here. */
14838
b34976b6 14839static bfd_boolean
4ce794b7
AM		 14840ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14841 struct bfd_link_info *info,
14842 struct elf_link_hash_entry *h,
ab6dce23 14843 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14844{
65f38f15 14845 struct ppc_link_hash_table *htab;
8387904d
AM		 14846 struct plt_entry *ent;
14847 Elf_Internal_Rela rela;
14848 bfd_byte *loc;
5bd4f169 14849
65f38f15 14850 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14851 if (htab == NULL)
14852 return FALSE;
5bd4f169 14853
8387904d
AM		 14854 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14855 if (ent->plt.offset != (bfd_vma) -1)
14856 {
14857 /* This symbol has an entry in the procedure linkage
14858 table. Set it up. */
e054468f
AM		 14859 if (!htab->elf.dynamic_sections_created
14860 || h->dynindx == -1)
14861 {
14862 BFD_ASSERT (h->type == STT_GNU_IFUNC
14863 && h->def_regular
14864 && (h->root.type == bfd_link_hash_defined
14865 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14866 rela.r_offset = (htab->elf.iplt->output_section->vma
14867 + htab->elf.iplt->output_offset
25f23106 14868 + ent->plt.offset);
ee67d69a
AM		 14869 if (htab->opd_abi)
14870 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14871 else
14872 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14873 rela.r_addend = (h->root.u.def.value
14874 + h->root.u.def.section->output_offset
14875 + h->root.u.def.section->output_section->vma
14876 + ent->addend);
33e44f2e
AM		 14877 loc = (htab->elf.irelplt->contents
14878 + (htab->elf.irelplt->reloc_count++
25f23106 14879 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14880 }
14881 else
14882 {
33e44f2e
AM		 14883 rela.r_offset = (htab->elf.splt->output_section->vma
14884 + htab->elf.splt->output_offset
25f23106 14885 + ent->plt.offset);
e054468f
AM		 14886 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14887 rela.r_addend = ent->addend;
33e44f2e 14888 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14889 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14890 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14891 }
8387904d 14892 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14893
14894 if (!htab->opd_abi)
14895 {
14896 if (!h->def_regular)
14897 {
14898 /* Mark the symbol as undefined, rather than as
14899 defined in glink. Leave the value if there were
14900 any relocations where pointer equality matters
14901 (this is a clue for the dynamic linker, to make
14902 function pointer comparisons work between an
14903 application and shared library), otherwise set it
14904 to zero. */
14905 sym->st_shndx = SHN_UNDEF;
14906 if (!h->pointer_equality_needed)
14907 sym->st_value = 0;
14908 else if (!h->ref_regular_nonweak)
14909 {
14910 /* This breaks function pointer comparisons, but
14911 that is better than breaking tests for a NULL
14912 function pointer. */
14913 sym->st_value = 0;
14914 }
14915 }
14916 }
8387904d 14917 }
5bd4f169 14918
f5385ebf 14919 if (h->needs_copy)
5bd4f169 14920 {
65f38f15 14921 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 14922
65f38f15
AM		 14923 if (h->dynindx == -1
14924 || (h->root.type != bfd_link_hash_defined
14925 && h->root.type != bfd_link_hash_defweak)
4ce794b7 14926 || htab->relbss == NULL)
65f38f15 14927 abort ();
5bd4f169
AM		 14928
14929 rela.r_offset = (h->root.u.def.value
14930 + h->root.u.def.section->output_section->vma
14931 + h->root.u.def.section->output_offset);
14932 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14933 rela.r_addend = 0;
4ce794b7
AM		 14934 loc = htab->relbss->contents;
14935 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 14936 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 14937 }
14938
b34976b6 14939 return TRUE;
5bd4f169
AM		 14940}
14941
65f38f15
AM		 14942/* Used to decide how to sort relocs in an optimal manner for the
14943 dynamic linker, before writing them out. */
14944
14945static enum elf_reloc_type_class
7e612e98
AM		 14946ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14947 const asection *rel_sec,
14948 const Elf_Internal_Rela *rela)
65f38f15 14949{
04c9666a 14950 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 14951 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14952
33e44f2e 14953 if (rel_sec == htab->elf.irelplt)
7e612e98 14954 return reloc_class_ifunc;
a33d1f77 14955
4ce794b7 14956 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14957 switch (r_type)
65f38f15
AM		 14958 {
14959 case R_PPC64_RELATIVE:
14960 return reloc_class_relative;
14961 case R_PPC64_JMP_SLOT:
14962 return reloc_class_plt;
14963 case R_PPC64_COPY:
14964 return reloc_class_copy;
14965 default:
14966 return reloc_class_normal;
14967 }
14968}
14969
5bd4f169
AM		 14970/* Finish up the dynamic sections. */
14971
b34976b6 14972static bfd_boolean
4ce794b7
AM		 14973ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14974 struct bfd_link_info *info)
5bd4f169 14975{
65f38f15
AM		 14976 struct ppc_link_hash_table *htab;
14977 bfd *dynobj;
5bd4f169 14978 asection *sdyn;
5bd4f169 14979
65f38f15 14980 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14981 if (htab == NULL)
14982 return FALSE;
14983
65f38f15 14984 dynobj = htab->elf.dynobj;
3d4d4302 14985 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 14986
65f38f15 14987 if (htab->elf.dynamic_sections_created)
5bd4f169 14988 {
5bd4f169
AM		 14989 Elf64_External_Dyn *dyncon, *dynconend;
14990
33e44f2e 14991 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 14992 abort ();
5bd4f169
AM		 14993
14994 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 14995 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 14996 for (; dyncon < dynconend; dyncon++)
14997 {
14998 Elf_Internal_Dyn dyn;
19397422 14999 asection *s;
5bd4f169
AM		 15000
15001 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15002
15003 switch (dyn.d_tag)
15004 {
65f38f15
AM		 15005 default:
15006 continue;
5bd4f169 15007
5d1634d7 15008 case DT_PPC64_GLINK:
4ce794b7 15009 s = htab->glink;
6348e046 15010 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15011 /* We stupidly defined DT_PPC64_GLINK to be the start
15012 of glink rather than the first entry point, which is
15013 what ld.so needs, and now have a bigger stub to
15014 support automatic multiple TOCs. */
b9e5796b 15015 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15016 break;
15017
19397422
AM		 15018 case DT_PPC64_OPD:
15019 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15020 if (s == NULL)
15021 continue;
15022 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15023 break;
15024
e8910a83
AM		 15025 case DT_PPC64_OPT:
15026 if (htab->do_multi_toc && htab->multi_toc_needed)
15027 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15028 break;
15029
19397422
AM		 15030 case DT_PPC64_OPDSZ:
15031 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15032 if (s == NULL)
15033 continue;
eea6121a 15034 dyn.d_un.d_val = s->size;
19397422
AM		 15035 break;
15036
65f38f15 15037 case DT_PLTGOT:
33e44f2e 15038 s = htab->elf.splt;
6348e046 15039 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15040 break;
15041
15042 case DT_JMPREL:
33e44f2e 15043 s = htab->elf.srelplt;
6348e046 15044 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15045 break;
5bd4f169 15046
65f38f15 15047 case DT_PLTRELSZ:
33e44f2e 15048 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15049 break;
15050
15051 case DT_RELASZ:
15052 /* Don't count procedure linkage table relocs in the
15053 overall reloc count. */
33e44f2e 15054 s = htab->elf.srelplt;
6348e046
AM		 15055 if (s == NULL)
15056 continue;
eea6121a 15057 dyn.d_un.d_val -= s->size;
6348e046
AM		 15058 break;
15059
15060 case DT_RELA:
15061 /* We may not be using the standard ELF linker script.
15062 If .rela.plt is the first .rela section, we adjust
15063 DT_RELA to not include it. */
33e44f2e 15064 s = htab->elf.srelplt;
6348e046
AM		 15065 if (s == NULL)
15066 continue;
15067 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15068 continue;
eea6121a 15069 dyn.d_un.d_ptr += s->size;
65f38f15 15070 break;
5bd4f169 15071 }
5bd4f169 15072
65f38f15 15073 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15074 }
5bd4f169
AM		 15075 }
15076
33e44f2e 15077 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15078 {
15079 /* Fill in the first entry in the global offset table.
15080 We use it to hold the link-time TOCbase. */
15081 bfd_put_64 (output_bfd,
60ee0d4a 15082 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15083 htab->elf.sgot->contents);
5d1634d7
AM		 15084
15085 /* Set .got entry size. */
33e44f2e 15086 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15087 }
15088
33e44f2e 15089 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15090 {
15091 /* Set .plt entry size. */
33e44f2e 15092 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15093 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15094 }
15095
84f5d08e
AM		 15096 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15097 brlt ourselves if emitrelocations. */
15098 if (htab->brlt != NULL
15099 && htab->brlt->reloc_count != 0
15100 && !_bfd_elf_link_output_relocs (output_bfd,
15101 htab->brlt,
d4730f92 15102 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15103 elf_section_data (htab->brlt)->relocs,
15104 NULL))
15105 return FALSE;
15106
176a0d42
AM		 15107 if (htab->glink != NULL
15108 && htab->glink->reloc_count != 0
15109 && !_bfd_elf_link_output_relocs (output_bfd,
15110 htab->glink,
d4730f92 15111 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15112 elf_section_data (htab->glink)->relocs,
15113 NULL))
15114 return FALSE;
15115
58d180e8
AM		 15116
15117 if (htab->glink_eh_frame != NULL
dbaa2011 15118 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
58d180e8
AM		 15119 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15120 htab->glink_eh_frame,
15121 htab->glink_eh_frame->contents))
15122 return FALSE;
15123
e717da7e 15124 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15125 since we didn't add them to DYNOBJ. We know dynobj is the first
15126 bfd. */
c72f2fb2 15127 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15128 {
15129 asection *s;
7b53ace3 15130
0c8d6e5c 15131 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15132 continue;
15133
e717da7e
AM		 15134 s = ppc64_elf_tdata (dynobj)->got;
15135 if (s != NULL
eea6121a 15136 && s->size != 0
e717da7e
AM		 15137 && s->output_section != bfd_abs_section_ptr
15138 && !bfd_set_section_contents (output_bfd, s->output_section,
15139 s->contents, s->output_offset,
eea6121a 15140 s->size))
e717da7e
AM		 15141 return FALSE;
15142 s = ppc64_elf_tdata (dynobj)->relgot;
15143 if (s != NULL
eea6121a 15144 && s->size != 0
e717da7e
AM		 15145 && s->output_section != bfd_abs_section_ptr
15146 && !bfd_set_section_contents (output_bfd, s->output_section,
15147 s->contents, s->output_offset,
eea6121a 15148 s->size))
e717da7e
AM		 15149 return FALSE;
15150 }
f6c52c13 15151
b34976b6 15152 return TRUE;
5bd4f169
AM		 15153}
15154
5bd4f169 15155#include "elf64-target.h"
7b8e7dad
AM		 15156
15157/* FreeBSD support */
15158
15159#undef TARGET_LITTLE_SYM
15160#undef TARGET_LITTLE_NAME
15161
15162#undef TARGET_BIG_SYM
6d00b590 15163#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15164#undef TARGET_BIG_NAME
15165#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15166
15167#undef ELF_OSABI
15168#define ELF_OSABI ELFOSABI_FREEBSD
15169
15170#undef elf64_bed
15171#define elf64_bed elf64_powerpc_fbsd_bed
15172
15173#include "elf64-target.h"
15174
GDB Binutils - Deliverables
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