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Taking an undefined function's address in an executable
[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;
d1eca1e4 6996 h->pointer_equality_needed = 0;
40b8271b 6997 }
a345bc8d
AM		 6998 else if (abiversion (info->output_bfd) == 2)
6999 {
d1eca1e4
AM		 7000 /* Taking a function's address in a read/write section
7001 doesn't require us to define the function symbol in the
7002 executable on a global entry stub. A dynamic reloc can
7003 be used instead. */
7004 if (h->pointer_equality_needed
7005 && !readonly_dynrelocs (h))
7006 {
7007 h->pointer_equality_needed = 0;
7008 h->non_got_ref = 0;
7009 }
7010
a345bc8d
AM		 7011 /* After adjust_dynamic_symbol, non_got_ref set in the
7012 non-shared case means that we have allocated space in
7013 .dynbss for the symbol and thus dyn_relocs for this
7014 symbol should be discarded.
7015 If we get here we know we are making a PLT entry for this
7016 symbol, and in an executable we'd normally resolve
7017 relocations against this symbol to the PLT entry. Allow
7018 dynamic relocs if the reference is weak, and the dynamic
7019 relocs will not cause text relocation. */
d1eca1e4
AM		 7020 else if (!h->ref_regular_nonweak
7021 && h->non_got_ref
7022 && h->type != STT_GNU_IFUNC
7023 && !readonly_dynrelocs (h))
a345bc8d
AM		 7024 h->non_got_ref = 0;
7025
7026 /* If making a plt entry, then we don't need copy relocs. */
7027 return TRUE;
7028 }
5bd4f169 7029 }
bbd7ec4a 7030 else
411e1bfb 7031 h->plt.plist = NULL;
5bd4f169
AM		 7032
7033 /* If this is a weak symbol, and there is a real definition, the
7034 processor independent code will have arranged for us to see the
7035 real definition first, and we can just use the same value. */
f6e332e6 7036 if (h->u.weakdef != NULL)
5bd4f169 7037 {
f6e332e6
AM		 7038 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7039 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7040 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7041 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7042 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7043 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7044 return TRUE;
5bd4f169
AM		 7045 }
7046
5bd4f169
AM		 7047 /* If we are creating a shared library, we must presume that the
7048 only references to the symbol are via the global offset table.
7049 For such cases we need not do anything here; the relocations will
7050 be handled correctly by relocate_section. */
7051 if (info->shared)
b34976b6 7052 return TRUE;
5bd4f169 7053
65f38f15
AM		 7054 /* If there are no references to this symbol that do not use the
7055 GOT, we don't need to generate a copy reloc. */
f5385ebf 7056 if (!h->non_got_ref)
b34976b6 7057 return TRUE;
65f38f15 7058
b186458a
JJ		 7059 /* Don't generate a copy reloc for symbols defined in the executable. */
7060 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7061 return TRUE;
7062
a345bc8d
AM		 7063 /* If we didn't find any dynamic relocs in read-only sections, then
7064 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7065 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7066 {
a345bc8d
AM		 7067 h->non_got_ref = 0;
7068 return TRUE;
65f38f15
AM		 7069 }
7070
5d35169e 7071 if (h->plt.plist != NULL)
97b639ba
AM		 7072 {
7073 /* We should never get here, but unfortunately there are versions
7074 of gcc out there that improperly (for this ABI) put initialized
7075 function pointers, vtable refs and suchlike in read-only
7076 sections. Allow them to proceed, but warn that this might
7077 break at runtime. */
25f53a85 7078 info->callbacks->einfo
bc30df16 7079 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7080 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7081 h->root.root.string);
7082 }
5d35169e
AM		 7083
7084 /* This is a reference to a symbol defined by a dynamic object which
7085 is not a function. */
7086
5bd4f169
AM		 7087 /* We must allocate the symbol in our .dynbss section, which will
7088 become part of the .bss section of the executable. There will be
7089 an entry for this symbol in the .dynsym section. The dynamic
7090 object will contain position independent code, so all references
7091 from the dynamic object to this symbol will go through the global
7092 offset table. The dynamic linker will use the .dynsym entry to
7093 determine the address it must put in the global offset table, so
7094 both the dynamic object and the regular object will refer to the
7095 same memory location for the variable. */
5bd4f169 7096
04c9666a
AM		 7097 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7098 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7099 runtime process image. We need to remember the offset into the
7100 .rela.bss section we are going to use. */
1d7e9d18 7101 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7102 {
eea6121a 7103 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7104 h->needs_copy = 1;
5bd4f169
AM		 7105 }
7106
4ce794b7 7107 s = htab->dynbss;
5bd4f169 7108
027297b7 7109 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 7110}
7111
e86ce104
AM		 7112/* If given a function descriptor symbol, hide both the function code
7113 sym and the descriptor. */
7114static void
4ce794b7
AM		 7115ppc64_elf_hide_symbol (struct bfd_link_info *info,
7116 struct elf_link_hash_entry *h,
7117 bfd_boolean force_local)
e86ce104 7118{
34814b9f 7119 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7120 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7121
34814b9f
AM		 7122 eh = (struct ppc_link_hash_entry *) h;
7123 if (eh->is_func_descriptor)
e86ce104 7124 {
34814b9f 7125 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7126
721956f4 7127 if (fh == NULL)
d1329ca3
AM		 7128 {
7129 const char *p, *q;
7130 struct ppc_link_hash_table *htab;
7131 char save;
7132
7133 /* We aren't supposed to use alloca in BFD because on
7134 systems which do not have alloca the version in libiberty
7135 calls xmalloc, which might cause the program to crash
7136 when it runs out of memory. This function doesn't have a
7137 return status, so there's no way to gracefully return an
7138 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7139 accessed; It's either a string in an ELF string table,
7140 or allocated in an objalloc structure. */
d1329ca3 7141
34814b9f 7142 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7143 save = *p;
7144 *(char *) p = '.';
7145 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7146 if (htab == NULL)
7147 return;
7148
34814b9f
AM		 7149 fh = (struct ppc_link_hash_entry *)
7150 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7151 *(char *) p = save;
7152
7153 /* Unfortunately, if it so happens that the string we were
7154 looking for was allocated immediately before this string,
7155 then we overwrote the string terminator. That's the only
7156 reason the lookup should fail. */
7157 if (fh == NULL)
7158 {
34814b9f
AM		 7159 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7160 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7161 --q, --p;
34814b9f
AM		 7162 if (q < eh->elf.root.root.string && *p == '.')
7163 fh = (struct ppc_link_hash_entry *)
7164 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7165 }
7166 if (fh != NULL)
7167 {
34814b9f
AM		 7168 eh->oh = fh;
7169 fh->oh = eh;
d1329ca3
AM		 7170 }
7171 }
e86ce104 7172 if (fh != NULL)
34814b9f 7173 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7174 }
7175}
7176
411e1bfb 7177static bfd_boolean
8843416a
AM		 7178get_sym_h (struct elf_link_hash_entry **hp,
7179 Elf_Internal_Sym **symp,
7180 asection **symsecp,
f961d9dd 7181 unsigned char **tls_maskp,
8843416a
AM		 7182 Elf_Internal_Sym **locsymsp,
7183 unsigned long r_symndx,
7184 bfd *ibfd)
411e1bfb 7185{
0ffa91dd 7186 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7187
7188 if (r_symndx >= symtab_hdr->sh_info)
7189 {
7190 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7191 struct elf_link_hash_entry *h;
7192
7193 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7194 h = elf_follow_link (h);
411e1bfb
AM		 7195
7196 if (hp != NULL)
7197 *hp = h;
7198
7199 if (symp != NULL)
7200 *symp = NULL;
7201
7202 if (symsecp != NULL)
7203 {
7204 asection *symsec = NULL;
7205 if (h->root.type == bfd_link_hash_defined
7206 || h->root.type == bfd_link_hash_defweak)
7207 symsec = h->root.u.def.section;
7208 *symsecp = symsec;
7209 }
7210
e7b938ca 7211 if (tls_maskp != NULL)
411e1bfb
AM		 7212 {
7213 struct ppc_link_hash_entry *eh;
7214
7215 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7216 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7217 }
7218 }
7219 else
7220 {
7221 Elf_Internal_Sym *sym;
7222 Elf_Internal_Sym *locsyms = *locsymsp;
7223
7224 if (locsyms == NULL)
7225 {
7226 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7227 if (locsyms == NULL)
7228 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7229 symtab_hdr->sh_info,
7230 0, NULL, NULL, NULL);
7231 if (locsyms == NULL)
7232 return FALSE;
7233 *locsymsp = locsyms;
7234 }
7235 sym = locsyms + r_symndx;
7236
7237 if (hp != NULL)
7238 *hp = NULL;
7239
7240 if (symp != NULL)
7241 *symp = sym;
7242
7243 if (symsecp != NULL)
cb33740c 7244 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7245
e7b938ca 7246 if (tls_maskp != NULL)
411e1bfb
AM		 7247 {
7248 struct got_entry **lgot_ents;
f961d9dd 7249 unsigned char *tls_mask;
411e1bfb 7250
e7b938ca 7251 tls_mask = NULL;
411e1bfb
AM		 7252 lgot_ents = elf_local_got_ents (ibfd);
7253 if (lgot_ents != NULL)
7254 {
e054468f
AM		 7255 struct plt_entry **local_plt = (struct plt_entry **)
7256 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7257 unsigned char *lgot_masks = (unsigned char *)
e054468f 7258 (local_plt + symtab_hdr->sh_info);
e7b938ca 7259 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7260 }
e7b938ca 7261 *tls_maskp = tls_mask;
411e1bfb
AM		 7262 }
7263 }
7264 return TRUE;
7265}
7266
e7b938ca 7267/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7268 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7269 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7270
7271static int
f961d9dd 7272get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7273 unsigned long *toc_symndx,
7274 bfd_vma *toc_addend,
0d4792f7 7275 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7276 const Elf_Internal_Rela *rel,
7277 bfd *ibfd)
411e1bfb
AM		 7278{
7279 unsigned long r_symndx;
0d4792f7 7280 int next_r;
411e1bfb
AM		 7281 struct elf_link_hash_entry *h;
7282 Elf_Internal_Sym *sym;
7283 asection *sec;
7284 bfd_vma off;
7285
7286 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7287 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7288 return 0;
411e1bfb 7289
e7b938ca 7290 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7291 || sec == NULL
6bee8834 7292 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7293 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7294 return 1;
411e1bfb
AM		 7295
7296 /* Look inside a TOC section too. */
7297 if (h != NULL)
7298 {
7299 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7300 off = h->root.u.def.value;
7301 }
7302 else
7303 off = sym->st_value;
7304 off += rel->r_addend;
7305 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7306 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7307 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7308 if (toc_symndx != NULL)
7309 *toc_symndx = r_symndx;
3a71aa26
AM		 7310 if (toc_addend != NULL)
7311 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7312 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7313 return 0;
854b41e7 7314 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7315 && (next_r == -1 || next_r == -2))
7316 return 1 - next_r;
951fd09b 7317 return 1;
411e1bfb
AM		 7318}
7319
3b421ab3
AM		 7320/* Find (or create) an entry in the tocsave hash table. */
7321
7322static struct tocsave_entry *
7323tocsave_find (struct ppc_link_hash_table *htab,
7324 enum insert_option insert,
7325 Elf_Internal_Sym **local_syms,
7326 const Elf_Internal_Rela *irela,
7327 bfd *ibfd)
7328{
7329 unsigned long r_indx;
7330 struct elf_link_hash_entry *h;
7331 Elf_Internal_Sym *sym;
7332 struct tocsave_entry ent, *p;
7333 hashval_t hash;
7334 struct tocsave_entry **slot;
7335
7336 r_indx = ELF64_R_SYM (irela->r_info);
7337 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7338 return NULL;
7339 if (ent.sec == NULL || ent.sec->output_section == NULL)
7340 {
7341 (*_bfd_error_handler)
7342 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7343 return NULL;
7344 }
7345
7346 if (h != NULL)
7347 ent.offset = h->root.u.def.value;
7348 else
7349 ent.offset = sym->st_value;
7350 ent.offset += irela->r_addend;
7351
7352 hash = tocsave_htab_hash (&ent);
7353 slot = ((struct tocsave_entry **)
7354 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7355 if (slot == NULL)
7356 return NULL;
7357
7358 if (*slot == NULL)
7359 {
7360 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7361 if (p == NULL)
7362 return NULL;
7363 *p = ent;
7364 *slot = p;
7365 }
7366 return *slot;
7367}
7368
754021d0 7369/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7370 code for the old ABI, these will already have been done. */
754021d0
AM		 7371
7372static bfd_boolean
7373adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7374{
7375 struct ppc_link_hash_entry *eh;
7376 asection *sym_sec;
74f0fb50 7377 struct _opd_sec_data *opd;
754021d0
AM		 7378
7379 if (h->root.type == bfd_link_hash_indirect)
7380 return TRUE;
7381
754021d0
AM		 7382 if (h->root.type != bfd_link_hash_defined
7383 && h->root.type != bfd_link_hash_defweak)
7384 return TRUE;
7385
7386 eh = (struct ppc_link_hash_entry *) h;
7387 if (eh->adjust_done)
7388 return TRUE;
7389
7390 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7391 opd = get_opd_info (sym_sec);
7392 if (opd != NULL && opd->adjust != NULL)
754021d0 7393 {
74f0fb50 7394 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 7395 if (adjust == -1)
7396 {
7397 /* This entry has been deleted. */
b3fac117 7398 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7399 if (dsec == NULL)
7400 {
7401 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7402 if (discarded_section (dsec))
81688140 7403 {
b3fac117 7404 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7405 break;
7406 }
7407 }
4025353c 7408 eh->elf.root.u.def.value = 0;
81688140 7409 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7410 }
7411 else
7412 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7413 eh->adjust_done = 1;
7414 }
7415 return TRUE;
7416}
7417
8c1d1bb8 7418/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7419 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7420 have already been determined. */
7421
7422static bfd_boolean
7423dec_dynrel_count (bfd_vma r_info,
7424 asection *sec,
7425 struct bfd_link_info *info,
7426 Elf_Internal_Sym **local_syms,
7427 struct elf_link_hash_entry *h,
19e08130 7428 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7429{
7430 enum elf_ppc64_reloc_type r_type;
19e08130 7431 asection *sym_sec = NULL;
8c1d1bb8
AM		 7432
7433 /* Can this reloc be dynamic? This switch, and later tests here
7434 should be kept in sync with the code in check_relocs. */
7435 r_type = ELF64_R_TYPE (r_info);
7436 switch (r_type)
7437 {
7438 default:
7439 return TRUE;
7440
7441 case R_PPC64_TPREL16:
7442 case R_PPC64_TPREL16_LO:
7443 case R_PPC64_TPREL16_HI:
7444 case R_PPC64_TPREL16_HA:
7445 case R_PPC64_TPREL16_DS:
7446 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7447 case R_PPC64_TPREL16_HIGH:
7448 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7449 case R_PPC64_TPREL16_HIGHER:
7450 case R_PPC64_TPREL16_HIGHERA:
7451 case R_PPC64_TPREL16_HIGHEST:
7452 case R_PPC64_TPREL16_HIGHESTA:
7453 if (!info->shared)
7454 return TRUE;
7455
7456 case R_PPC64_TPREL64:
7457 case R_PPC64_DTPMOD64:
7458 case R_PPC64_DTPREL64:
7459 case R_PPC64_ADDR64:
7460 case R_PPC64_REL30:
7461 case R_PPC64_REL32:
7462 case R_PPC64_REL64:
7463 case R_PPC64_ADDR14:
7464 case R_PPC64_ADDR14_BRNTAKEN:
7465 case R_PPC64_ADDR14_BRTAKEN:
7466 case R_PPC64_ADDR16:
7467 case R_PPC64_ADDR16_DS:
7468 case R_PPC64_ADDR16_HA:
7469 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7470 case R_PPC64_ADDR16_HIGH:
7471 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7472 case R_PPC64_ADDR16_HIGHER:
7473 case R_PPC64_ADDR16_HIGHERA:
7474 case R_PPC64_ADDR16_HIGHEST:
7475 case R_PPC64_ADDR16_HIGHESTA:
7476 case R_PPC64_ADDR16_LO:
7477 case R_PPC64_ADDR16_LO_DS:
7478 case R_PPC64_ADDR24:
7479 case R_PPC64_ADDR32:
7480 case R_PPC64_UADDR16:
7481 case R_PPC64_UADDR32:
7482 case R_PPC64_UADDR64:
7483 case R_PPC64_TOC:
7484 break;
7485 }
7486
7487 if (local_syms != NULL)
7488 {
7489 unsigned long r_symndx;
8c1d1bb8
AM		 7490 bfd *ibfd = sec->owner;
7491
7492 r_symndx = ELF64_R_SYM (r_info);
7493 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7494 return FALSE;
7495 }
7496
7497 if ((info->shared
1d483afe 7498 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7499 || (h != NULL
198f1157 7500 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7501 || h->root.type == bfd_link_hash_defweak
7502 || !h->def_regular))))
7503 || (ELIMINATE_COPY_RELOCS
7504 && !info->shared
7505 && h != NULL
7506 && (h->root.type == bfd_link_hash_defweak
7507 || !h->def_regular)))
7508 ;
7509 else
7510 return TRUE;
7511
7512 if (h != NULL)
6edfbbad 7513 {
19e08130
AM		 7514 struct elf_dyn_relocs *p;
7515 struct elf_dyn_relocs **pp;
7516 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7517
7518 /* elf_gc_sweep may have already removed all dyn relocs associated
7519 with local syms for a given section. Also, symbol flags are
7520 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7521 report a dynreloc miscount. */
7522 if (*pp == NULL && info->gc_sections)
7523 return TRUE;
7524
7525 while ((p = *pp) != NULL)
60124e18 7526 {
19e08130
AM		 7527 if (p->sec == sec)
7528 {
7529 if (!must_be_dyn_reloc (info, r_type))
7530 p->pc_count -= 1;
7531 p->count -= 1;
7532 if (p->count == 0)
7533 *pp = p->next;
7534 return TRUE;
7535 }
7536 pp = &p->next;
60124e18 7537 }
6edfbbad 7538 }
19e08130
AM		 7539 else
7540 {
7541 struct ppc_dyn_relocs *p;
7542 struct ppc_dyn_relocs **pp;
7543 void *vpp;
7544 bfd_boolean is_ifunc;
8c1d1bb8 7545
19e08130
AM		 7546 if (local_syms == NULL)
7547 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7548 if (sym_sec == NULL)
7549 sym_sec = sec;
c57da1a7 7550
19e08130
AM		 7551 vpp = &elf_section_data (sym_sec)->local_dynrel;
7552 pp = (struct ppc_dyn_relocs **) vpp;
7553
7554 if (*pp == NULL && info->gc_sections)
7555 return TRUE;
7556
7557 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7558 while ((p = *pp) != NULL)
8c1d1bb8 7559 {
19e08130
AM		 7560 if (p->sec == sec && p->ifunc == is_ifunc)
7561 {
7562 p->count -= 1;
7563 if (p->count == 0)
7564 *pp = p->next;
7565 return TRUE;
7566 }
7567 pp = &p->next;
8c1d1bb8 7568 }
8c1d1bb8
AM		 7569 }
7570
8de848d8 7571 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7572 sec->owner, sec);
8c1d1bb8
AM		 7573 bfd_set_error (bfd_error_bad_value);
7574 return FALSE;
7575}
7576
754021d0
AM		 7577/* Remove unused Official Procedure Descriptor entries. Currently we
7578 only remove those associated with functions in discarded link-once
7579 sections, or weakly defined functions that have been overridden. It
7580 would be possible to remove many more entries for statically linked
7581 applications. */
7582
b34976b6 7583bfd_boolean
e7d1c40c 7584ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7585{
7586 bfd *ibfd;
754021d0 7587 bfd_boolean some_edited = FALSE;
3f764659 7588 asection *need_pad = NULL;
e7d1c40c
AM		 7589 struct ppc_link_hash_table *htab;
7590
7591 htab = ppc_hash_table (info);
7592 if (htab == NULL)
7593 return FALSE;
1e2f5b6e 7594
c72f2fb2 7595 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7596 {
7597 asection *sec;
7598 Elf_Internal_Rela *relstart, *rel, *relend;
7599 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7600 Elf_Internal_Sym *local_syms;
1e2f5b6e 7601 bfd_vma offset;
74f0fb50 7602 struct _opd_sec_data *opd;
3f764659
JJ		 7603 bfd_boolean need_edit, add_aux_fields;
7604 bfd_size_type cnt_16b = 0;
1e2f5b6e 7605
854b41e7
AM		 7606 if (!is_ppc64_elf (ibfd))
7607 continue;
7608
1e2f5b6e 7609 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7610 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7611 continue;
7612
dbaa2011 7613 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7614 continue;
7615
1e2f5b6e
AM		 7616 if (sec->output_section == bfd_abs_section_ptr)
7617 continue;
7618
7619 /* Look through the section relocs. */
7620 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7621 continue;
7622
6cdc0ccc 7623 local_syms = NULL;
0ffa91dd 7624 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7625
7626 /* Read the relocations. */
4ce794b7 7627 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7628 info->keep_memory);
1e2f5b6e 7629 if (relstart == NULL)
b34976b6 7630 return FALSE;
1e2f5b6e
AM		 7631
7632 /* First run through the relocs to check they are sane, and to
7633 determine whether we need to edit this opd section. */
b34976b6 7634 need_edit = FALSE;
3f764659 7635 need_pad = sec;
1e2f5b6e
AM		 7636 offset = 0;
7637 relend = relstart + sec->reloc_count;
50bc7936 7638 for (rel = relstart; rel < relend; )
1e2f5b6e 7639 {
04c9666a 7640 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7641 unsigned long r_symndx;
7642 asection *sym_sec;
7643 struct elf_link_hash_entry *h;
7644 Elf_Internal_Sym *sym;
7645
3f764659 7646 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7647 only interested in the reloc pointing to a function entry
7648 point. */
50bc7936
AM		 7649 if (rel->r_offset != offset
7650 || rel + 1 >= relend
7651 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 7652 {
7653 /* If someone messes with .opd alignment then after a
7654 "ld -r" we might have padding in the middle of .opd.
7655 Also, there's nothing to prevent someone putting
7656 something silly in .opd with the assembler. No .opd
b34976b6 7657 optimization for them! */
3f764659 7658 broken_opd:
1e2f5b6e 7659 (*_bfd_error_handler)
d003868e 7660 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7661 need_edit = FALSE;
1e2f5b6e
AM		 7662 break;
7663 }
7664
50bc7936
AM		 7665 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7666 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7667 {
7668 (*_bfd_error_handler)
d003868e
AM		 7669 (_("%B: unexpected reloc type %u in .opd section"),
7670 ibfd, r_type);
50bc7936
AM		 7671 need_edit = FALSE;
7672 break;
7673 }
7674
1e2f5b6e 7675 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7676 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7677 r_symndx, ibfd))
50bc7936 7678 goto error_ret;
1e2f5b6e
AM		 7679
7680 if (sym_sec == NULL || sym_sec->owner == NULL)
7681 {
411e1bfb
AM		 7682 const char *sym_name;
7683 if (h != NULL)
7684 sym_name = h->root.root.string;
7685 else
26c61ae5
L		 7686 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7687 sym_sec);
411e1bfb 7688
1e2f5b6e 7689 (*_bfd_error_handler)
d003868e
AM		 7690 (_("%B: undefined sym `%s' in .opd section"),
7691 ibfd, sym_name);
b34976b6 7692 need_edit = FALSE;
1e2f5b6e
AM		 7693 break;
7694 }
7695
51020317
AM		 7696 /* opd entries are always for functions defined in the
7697 current input bfd. If the symbol isn't defined in the
7698 input bfd, then we won't be using the function in this
7699 bfd; It must be defined in a linkonce section in another
7700 bfd, or is weak. It's also possible that we are
7701 discarding the function due to a linker script /DISCARD/,
7702 which we test for via the output_section. */
7703 if (sym_sec->owner != ibfd
7704 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7705 need_edit = TRUE;
1e2f5b6e 7706
50bc7936 7707 rel += 2;
3f764659
JJ		 7708 if (rel == relend
7709 || (rel + 1 == relend && rel->r_offset == offset + 16))
7710 {
7711 if (sec->size == offset + 24)
7712 {
7713 need_pad = NULL;
7714 break;
7715 }
7716 if (rel == relend && sec->size == offset + 16)
7717 {
7718 cnt_16b++;
7719 break;
7720 }
7721 goto broken_opd;
7722 }
7723
7724 if (rel->r_offset == offset + 24)
7725 offset += 24;
7726 else if (rel->r_offset != offset + 16)
7727 goto broken_opd;
7728 else if (rel + 1 < relend
7729 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7730 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7731 {
7732 offset += 16;
7733 cnt_16b++;
7734 }
7735 else if (rel + 2 < relend
7736 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7737 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7738 {
7739 offset += 24;
7740 rel += 1;
7741 }
7742 else
7743 goto broken_opd;
1e2f5b6e
AM		 7744 }
7745
e7d1c40c 7746 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659
JJ		 7747
7748 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 7749 {
7750 Elf_Internal_Rela *write_rel;
d4730f92 7751 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7752 bfd_byte *rptr, *wptr;
983bddc8 7753 bfd_byte *new_contents;
b34976b6 7754 bfd_boolean skip;
3f764659 7755 long opd_ent_size;
74f0fb50
AM		 7756 bfd_size_type amt;
7757
983bddc8 7758 new_contents = NULL;
74f0fb50
AM		 7759 amt = sec->size * sizeof (long) / 8;
7760 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7761 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7762 if (opd->adjust == NULL)
7763 return FALSE;
7764 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7765
7766 /* This seems a waste of time as input .opd sections are all
7767 zeros as generated by gcc, but I suppose there's no reason
7768 this will always be so. We might start putting something in
7769 the third word of .opd entries. */
7770 if ((sec->flags & SEC_IN_MEMORY) == 0)
7771 {
eea6121a
AM		 7772 bfd_byte *loc;
7773 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7774 {
eea6121a
AM		 7775 if (loc != NULL)
7776 free (loc);
50bc7936 7777 error_ret:
6cdc0ccc
AM		 7778 if (local_syms != NULL
7779 && symtab_hdr->contents != (unsigned char *) local_syms)
7780 free (local_syms);
6cdc0ccc
AM		 7781 if (elf_section_data (sec)->relocs != relstart)
7782 free (relstart);
b34976b6 7783 return FALSE;
6cdc0ccc 7784 }
1e2f5b6e
AM		 7785 sec->contents = loc;
7786 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7787 }
7788
7789 elf_section_data (sec)->relocs = relstart;
7790
3f764659 7791 new_contents = sec->contents;
3f764659
JJ		 7792 if (add_aux_fields)
7793 {
7794 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7795 if (new_contents == NULL)
7796 return FALSE;
7797 need_pad = FALSE;
3f764659 7798 }
b4f4e59f
AM		 7799 wptr = new_contents;
7800 rptr = sec->contents;
3f764659 7801
1e2f5b6e 7802 write_rel = relstart;
b34976b6 7803 skip = FALSE;
1e2f5b6e 7804 offset = 0;
3f764659 7805 opd_ent_size = 0;
1e2f5b6e
AM		 7806 for (rel = relstart; rel < relend; rel++)
7807 {
50bc7936
AM		 7808 unsigned long r_symndx;
7809 asection *sym_sec;
7810 struct elf_link_hash_entry *h;
7811 Elf_Internal_Sym *sym;
7812
7813 r_symndx = ELF64_R_SYM (rel->r_info);
7814 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7815 r_symndx, ibfd))
50bc7936
AM		 7816 goto error_ret;
7817
1e2f5b6e
AM		 7818 if (rel->r_offset == offset)
7819 {
50bc7936 7820 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 7821
7822 /* See if the .opd entry is full 24 byte or
7823 16 byte (with fd_aux entry overlapped with next
7824 fd_func). */
7825 opd_ent_size = 24;
7826 if ((rel + 2 == relend && sec->size == offset + 16)
7827 || (rel + 3 < relend
7828 && rel[2].r_offset == offset + 16
7829 && rel[3].r_offset == offset + 24
7830 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7831 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7832 opd_ent_size = 16;
7833
4025353c
AM		 7834 if (h != NULL
7835 && h->root.root.string[0] == '.')
c4f68ce3 7836 {
e7d1c40c 7837 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
c4f68ce3
AM		 7838 if (fdh != NULL
7839 && fdh->elf.root.type != bfd_link_hash_defined
7840 && fdh->elf.root.type != bfd_link_hash_defweak)
7841 fdh = NULL;
7842 }
1e2f5b6e 7843
51020317
AM		 7844 skip = (sym_sec->owner != ibfd
7845 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 7846 if (skip)
7847 {
4025353c 7848 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 7849 {
7850 /* Arrange for the function descriptor sym
7851 to be dropped. */
d6fe2dc1
AM		 7852 fdh->elf.root.u.def.value = 0;
7853 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7854 }
74f0fb50 7855 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 7856 }
7857 else
1e2f5b6e
AM		 7858 {
7859 /* We'll be keeping this opd entry. */
7860
4025353c 7861 if (fdh != NULL)
1e2f5b6e 7862 {
754021d0
AM		 7863 /* Redefine the function descriptor symbol to
7864 this location in the opd section. It is
7865 necessary to update the value here rather
7866 than using an array of adjustments as we do
7867 for local symbols, because various places
7868 in the generic ELF code use the value
7869 stored in u.def.value. */
3f764659 7870 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7871 fdh->adjust_done = 1;
1e2f5b6e 7872 }
754021d0
AM		 7873
7874 /* Local syms are a bit tricky. We could
7875 tweak them as they can be cached, but
7876 we'd need to look through the local syms
7877 for the function descriptor sym which we
7878 don't have at the moment. So keep an
7879 array of adjustments. */
74f0fb50 7880 opd->adjust[rel->r_offset / 8]
3f764659 7881 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 7882
7883 if (wptr != rptr)
3f764659
JJ		 7884 memcpy (wptr, rptr, opd_ent_size);
7885 wptr += opd_ent_size;
7886 if (add_aux_fields && opd_ent_size == 16)
7887 {
7888 memset (wptr, '\0', 8);
7889 wptr += 8;
7890 }
1e2f5b6e 7891 }
3f764659
JJ		 7892 rptr += opd_ent_size;
7893 offset += opd_ent_size;
1e2f5b6e
AM		 7894 }
7895
50bc7936
AM		 7896 if (skip)
7897 {
60124e18
AM		 7898 if (!NO_OPD_RELOCS
7899 && !info->relocatable
18d944df 7900 && !dec_dynrel_count (rel->r_info, sec, info,
19e08130 7901 NULL, h, sym))
8c1d1bb8 7902 goto error_ret;
50bc7936
AM		 7903 }
7904 else
1e2f5b6e 7905 {
50bc7936
AM		 7906 /* We need to adjust any reloc offsets to point to the
7907 new opd entries. While we're at it, we may as well
7908 remove redundant relocs. */
74f0fb50 7909 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 7910 if (write_rel != rel)
7911 memcpy (write_rel, rel, sizeof (*rel));
7912 ++write_rel;
7913 }
7914 }
7915
3f764659 7916 sec->size = wptr - new_contents;
1e2f5b6e 7917 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7918 if (add_aux_fields)
7919 {
7920 free (sec->contents);
7921 sec->contents = new_contents;
7922 }
7923
05bf9422 7924 /* Fudge the header size too, as this is used later in
cdcf6e38 7925 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7926 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7927 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7928 some_edited = TRUE;
1e2f5b6e 7929 }
6cdc0ccc 7930 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7931 free (relstart);
6cdc0ccc 7932
411e1bfb
AM		 7933 if (local_syms != NULL
7934 && symtab_hdr->contents != (unsigned char *) local_syms)
7935 {
7936 if (!info->keep_memory)
7937 free (local_syms);
7938 else
7939 symtab_hdr->contents = (unsigned char *) local_syms;
7940 }
7941 }
7942
754021d0
AM		 7943 if (some_edited)
7944 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7945
3f764659
JJ		 7946 /* If we are doing a final link and the last .opd entry is just 16 byte
7947 long, add a 8 byte padding after it. */
7948 if (need_pad != NULL && !info->relocatable)
7949 {
7950 bfd_byte *p;
7951
7952 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7953 {
7954 BFD_ASSERT (need_pad->size > 0);
7955
7956 p = bfd_malloc (need_pad->size + 8);
7957 if (p == NULL)
7958 return FALSE;
699733f6 7959
3f764659
JJ		 7960 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7961 p, 0, need_pad->size))
7962 return FALSE;
7963
7964 need_pad->contents = p;
7965 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7966 }
7967 else
7968 {
7969 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7970 if (p == NULL)
7971 return FALSE;
7972
7973 need_pad->contents = p;
7974 }
7975
7976 memset (need_pad->contents + need_pad->size, 0, 8);
7977 need_pad->size += 8;
7978 }
7979
411e1bfb
AM		 7980 return TRUE;
7981}
7982
e1918d23 7983/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7984
e1918d23 7985asection *
e7d1c40c 7986ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 7987{
411e1bfb
AM		 7988 struct ppc_link_hash_table *htab;
7989
411e1bfb 7990 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7991 if (htab == NULL)
7992 return NULL;
7993
ee67d69a
AM		 7994 if (abiversion (info->output_bfd) == 1)
7995 htab->opd_abi = 1;
7996
e7d1c40c 7997 if (htab->params->no_multi_toc)
33c0ec9d
AM		 7998 htab->do_multi_toc = 0;
7999 else if (!htab->do_multi_toc)
e7d1c40c 8000 htab->params->no_multi_toc = 1;
33c0ec9d 8001
3a71aa26
AM		 8002 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8003 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8004 FALSE, FALSE, TRUE));
a7f2871e
AM		 8005 /* Move dynamic linking info to the function descriptor sym. */
8006 if (htab->tls_get_addr != NULL)
8007 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8008 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8009 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8010 FALSE, FALSE, TRUE));
e7d1c40c 8011 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8012 {
8013 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8014
8015 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8016 FALSE, FALSE, TRUE);
8017 if (opt != NULL)
8018 func_desc_adjust (opt, info);
8019 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8020 FALSE, FALSE, TRUE);
8021 if (opt_fd != NULL
8022 && (opt_fd->root.type == bfd_link_hash_defined
8023 || opt_fd->root.type == bfd_link_hash_defweak))
8024 {
8025 /* If glibc supports an optimized __tls_get_addr call stub,
8026 signalled by the presence of __tls_get_addr_opt, and we'll
8027 be calling __tls_get_addr via a plt call stub, then
8028 make __tls_get_addr point to __tls_get_addr_opt. */
8029 tga_fd = &htab->tls_get_addr_fd->elf;
8030 if (htab->elf.dynamic_sections_created
8031 && tga_fd != NULL
8032 && (tga_fd->type == STT_FUNC
8033 || tga_fd->needs_plt)
8034 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8035 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8036 && tga_fd->root.type == bfd_link_hash_undefweak)))
8037 {
8038 struct plt_entry *ent;
8039
8040 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8041 if (ent->plt.refcount > 0)
8042 break;
8043 if (ent != NULL)
8044 {
8045 tga_fd->root.type = bfd_link_hash_indirect;
8046 tga_fd->root.u.i.link = &opt_fd->root;
8047 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8048 if (opt_fd->dynindx != -1)
8049 {
8050 /* Use __tls_get_addr_opt in dynamic relocations. */
8051 opt_fd->dynindx = -1;
8052 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8053 opt_fd->dynstr_index);
8054 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8055 return NULL;
a7f2871e
AM		 8056 }
8057 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8058 tga = &htab->tls_get_addr->elf;
8059 if (opt != NULL && tga != NULL)
8060 {
8061 tga->root.type = bfd_link_hash_indirect;
8062 tga->root.u.i.link = &opt->root;
8063 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8064 _bfd_elf_link_hash_hide_symbol (info, opt,
8065 tga->forced_local);
8066 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8067 }
8068 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8069 htab->tls_get_addr_fd->is_func_descriptor = 1;
8070 if (htab->tls_get_addr != NULL)
8071 {
8072 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8073 htab->tls_get_addr->is_func = 1;
8074 }
8075 }
8076 }
8077 }
8078 else
e7d1c40c 8079 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8080 }
33c0ec9d 8081 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8082}
8387904d 8083
3a71aa26
AM		 8084/* Return TRUE iff REL is a branch reloc with a global symbol matching
8085 HASH1 or HASH2. */
8387904d 8086
3a71aa26
AM		 8087static bfd_boolean
8088branch_reloc_hash_match (const bfd *ibfd,
8089 const Elf_Internal_Rela *rel,
8090 const struct ppc_link_hash_entry *hash1,
8091 const struct ppc_link_hash_entry *hash2)
8092{
8093 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8094 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8095 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8096
e054468f 8097 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8098 {
3a71aa26
AM		 8099 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8100 struct elf_link_hash_entry *h;
8387904d 8101
3a71aa26 8102 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8103 h = elf_follow_link (h);
3a71aa26
AM		 8104 if (h == &hash1->elf || h == &hash2->elf)
8105 return TRUE;
a48ebf4d 8106 }
3a71aa26 8107 return FALSE;
951fd09b 8108}
411e1bfb 8109
951fd09b
AM		 8110/* Run through all the TLS relocs looking for optimization
8111 opportunities. The linker has been hacked (see ppc64elf.em) to do
8112 a preliminary section layout so that we know the TLS segment
8113 offsets. We can't optimize earlier because some optimizations need
8114 to know the tp offset, and we need to optimize before allocating
8115 dynamic relocations. */
8116
8117bfd_boolean
33c0ec9d 8118ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8119{
8120 bfd *ibfd;
8121 asection *sec;
8122 struct ppc_link_hash_table *htab;
663a1470 8123 unsigned char *toc_ref;
102890f0 8124 int pass;
951fd09b 8125
1d483afe 8126 if (info->relocatable || !info->executable)
411e1bfb
AM		 8127 return TRUE;
8128
951fd09b 8129 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8130 if (htab == NULL)
8131 return FALSE;
8132
663a1470
AM		 8133 /* Make two passes over the relocs. On the first pass, mark toc
8134 entries involved with tls relocs, and check that tls relocs
8135 involved in setting up a tls_get_addr call are indeed followed by
8136 such a call. If they are not, we can't do any tls optimization.
8137 On the second pass twiddle tls_mask flags to notify
8138 relocate_section that optimization can be done, and adjust got
8139 and plt refcounts. */
8140 toc_ref = NULL;
8141 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8142 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8143 {
8144 Elf_Internal_Sym *locsyms = NULL;
8145 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8146
102890f0
AM		 8147 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8148 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8149 {
8150 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8151 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8152
102890f0
AM		 8153 /* Read the relocations. */
8154 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8155 info->keep_memory);
8156 if (relstart == NULL)
2915c55b
JK		 8157 {
8158 free (toc_ref);
8159 return FALSE;
8160 }
411e1bfb 8161
102890f0
AM		 8162 relend = relstart + sec->reloc_count;
8163 for (rel = relstart; rel < relend; rel++)
8164 {
8165 enum elf_ppc64_reloc_type r_type;
8166 unsigned long r_symndx;
8167 struct elf_link_hash_entry *h;
8168 Elf_Internal_Sym *sym;
8169 asection *sym_sec;
f961d9dd
AM		 8170 unsigned char *tls_mask;
8171 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8172 bfd_vma value;
8173 bfd_boolean ok_tprel, is_local;
8174 long toc_ref_index = 0;
8175 int expecting_tls_get_addr = 0;
663a1470 8176 bfd_boolean ret = FALSE;
411e1bfb 8177
102890f0
AM		 8178 r_symndx = ELF64_R_SYM (rel->r_info);
8179 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8180 r_symndx, ibfd))
8181 {
8182 err_free_rel:
8183 if (elf_section_data (sec)->relocs != relstart)
8184 free (relstart);
8185 if (toc_ref != NULL)
8186 free (toc_ref);
8187 if (locsyms != NULL
0ffa91dd 8188 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8189 != (unsigned char *) locsyms))
8190 free (locsyms);
663a1470 8191 return ret;
102890f0 8192 }
411e1bfb 8193
102890f0
AM		 8194 if (h != NULL)
8195 {
766bc656
AM		 8196 if (h->root.type == bfd_link_hash_defined
8197 || h->root.type == bfd_link_hash_defweak)
8198 value = h->root.u.def.value;
8199 else if (h->root.type == bfd_link_hash_undefweak)
8200 value = 0;
8201 else
663a1470
AM		 8202 {
8203 found_tls_get_addr_arg = 0;
8204 continue;
8205 }
102890f0
AM		 8206 }
8207 else
8208 /* Symbols referenced by TLS relocs must be of type
8209 STT_TLS. So no need for .opd local sym adjust. */
8210 value = sym->st_value;
8211
8212 ok_tprel = FALSE;
8213 is_local = FALSE;
8214 if (h == NULL
8215 || !h->def_dynamic)
8216 {
8217 is_local = TRUE;
766bc656
AM		 8218 if (h != NULL
8219 && h->root.type == bfd_link_hash_undefweak)
8220 ok_tprel = TRUE;
8221 else
8222 {
8223 value += sym_sec->output_offset;
8224 value += sym_sec->output_section->vma;
8225 value -= htab->elf.tls_sec->vma;
8226 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8227 < (bfd_vma) 1 << 32);
8228 }
102890f0 8229 }
951fd09b 8230
102890f0 8231 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8232 /* If this section has old-style __tls_get_addr calls
8233 without marker relocs, then check that each
8234 __tls_get_addr call reloc is preceded by a reloc
8235 that conceivably belongs to the __tls_get_addr arg
8236 setup insn. If we don't find matching arg setup
8237 relocs, don't do any tls optimization. */
8238 if (pass == 0
8239 && sec->has_tls_get_addr_call
8240 && h != NULL
8241 && (h == &htab->tls_get_addr->elf
8242 || h == &htab->tls_get_addr_fd->elf)
8243 && !found_tls_get_addr_arg
8244 && is_branch_reloc (r_type))
8245 {
25f53a85 8246 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8247 "TLS optimization disabled\n"),
8248 ibfd, sec, rel->r_offset);
8249 ret = TRUE;
8250 goto err_free_rel;
8251 }
8252
8253 found_tls_get_addr_arg = 0;
102890f0
AM		 8254 switch (r_type)
8255 {
8256 case R_PPC64_GOT_TLSLD16:
8257 case R_PPC64_GOT_TLSLD16_LO:
8258 expecting_tls_get_addr = 1;
663a1470 8259 found_tls_get_addr_arg = 1;
102890f0
AM		 8260 /* Fall thru */
8261
8262 case R_PPC64_GOT_TLSLD16_HI:
8263 case R_PPC64_GOT_TLSLD16_HA:
8264 /* These relocs should never be against a symbol
8265 defined in a shared lib. Leave them alone if
8266 that turns out to be the case. */
8267 if (!is_local)
8268 continue;
411e1bfb 8269
102890f0 8270 /* LD -> LE */
411e1bfb 8271 tls_set = 0;
102890f0
AM		 8272 tls_clear = TLS_LD;
8273 tls_type = TLS_TLS | TLS_LD;
8274 break;
411e1bfb 8275
102890f0
AM		 8276 case R_PPC64_GOT_TLSGD16:
8277 case R_PPC64_GOT_TLSGD16_LO:
8278 expecting_tls_get_addr = 1;
663a1470 8279 found_tls_get_addr_arg = 1;
102890f0
AM		 8280 /* Fall thru */
8281
8282 case R_PPC64_GOT_TLSGD16_HI:
8283 case R_PPC64_GOT_TLSGD16_HA:
8284 if (ok_tprel)
8285 /* GD -> LE */
411e1bfb 8286 tls_set = 0;
102890f0
AM		 8287 else
8288 /* GD -> IE */
8289 tls_set = TLS_TLS | TLS_TPRELGD;
8290 tls_clear = TLS_GD;
8291 tls_type = TLS_TLS | TLS_GD;
8292 break;
8293
8294 case R_PPC64_GOT_TPREL16_DS:
8295 case R_PPC64_GOT_TPREL16_LO_DS:
8296 case R_PPC64_GOT_TPREL16_HI:
8297 case R_PPC64_GOT_TPREL16_HA:
8298 if (ok_tprel)
8299 {
8300 /* IE -> LE */
8301 tls_set = 0;
8302 tls_clear = TLS_TPREL;
8303 tls_type = TLS_TLS | TLS_TPREL;
8304 break;
8305 }
411e1bfb
AM		 8306 continue;
8307
727fc41e
AM		 8308 case R_PPC64_TLSGD:
8309 case R_PPC64_TLSLD:
663a1470
AM		 8310 found_tls_get_addr_arg = 1;
8311 /* Fall thru */
8312
8313 case R_PPC64_TLS:
8314 case R_PPC64_TOC16:
8315 case R_PPC64_TOC16_LO:
102890f0
AM		 8316 if (sym_sec == NULL || sym_sec != toc)
8317 continue;
8318
8319 /* Mark this toc entry as referenced by a TLS
8320 code sequence. We can do that now in the
8321 case of R_PPC64_TLS, and after checking for
8322 tls_get_addr for the TOC16 relocs. */
8323 if (toc_ref == NULL)
663a1470
AM		 8324 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8325 if (toc_ref == NULL)
8326 goto err_free_rel;
8327
102890f0
AM		 8328 if (h != NULL)
8329 value = h->root.u.def.value;
8330 else
8331 value = sym->st_value;
8332 value += rel->r_addend;
8333 BFD_ASSERT (value < toc->size && value % 8 == 0);
663a1470 8334 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8335 if (r_type == R_PPC64_TLS
8336 || r_type == R_PPC64_TLSGD
8337 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8338 {
8339 toc_ref[toc_ref_index] = 1;
8340 continue;
8341 }
8342
8343 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8344 continue;
8345
8346 tls_set = 0;
8347 tls_clear = 0;
8348 expecting_tls_get_addr = 2;
8349 break;
8350
8351 case R_PPC64_TPREL64:
8352 if (pass == 0
8353 || sec != toc
8354 || toc_ref == NULL
663a1470 8355 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8356 continue;
8357 if (ok_tprel)
8358 {
8359 /* IE -> LE */
8360 tls_set = TLS_EXPLICIT;
8361 tls_clear = TLS_TPREL;
8362 break;
8363 }
8364 continue;
8365
8366 case R_PPC64_DTPMOD64:
8367 if (pass == 0
8368 || sec != toc
8369 || toc_ref == NULL
663a1470 8370 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8371 continue;
8372 if (rel + 1 < relend
8373 && (rel[1].r_info
8374 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8375 && rel[1].r_offset == rel->r_offset + 8)
8376 {
8377 if (ok_tprel)
8378 /* GD -> LE */
8379 tls_set = TLS_EXPLICIT | TLS_GD;
8380 else
8381 /* GD -> IE */
8382 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8383 tls_clear = TLS_GD;
8384 }
8385 else
8386 {
8387 if (!is_local)
8388 continue;
8389
8390 /* LD -> LE */
8391 tls_set = TLS_EXPLICIT;
8392 tls_clear = TLS_LD;
8393 }
8394 break;
8395
8396 default:
8397 continue;
8398 }
8399
8400 if (pass == 0)
8401 {
727fc41e
AM		 8402 if (!expecting_tls_get_addr
8403 || !sec->has_tls_get_addr_call)
102890f0
AM		 8404 continue;
8405
3a71aa26
AM		 8406 if (rel + 1 < relend
8407 && branch_reloc_hash_match (ibfd, rel + 1,
8408 htab->tls_get_addr,
8409 htab->tls_get_addr_fd))
102890f0 8410 {
3a71aa26 8411 if (expecting_tls_get_addr == 2)
102890f0 8412 {
3a71aa26 8413 /* Check for toc tls entries. */
f961d9dd 8414 unsigned char *toc_tls;
3a71aa26
AM		 8415 int retval;
8416
8417 retval = get_tls_mask (&toc_tls, NULL, NULL,
8418 &locsyms,
8419 rel, ibfd);
8420 if (retval == 0)
8421 goto err_free_rel;
663a1470
AM		 8422 if (toc_tls != NULL)
8423 {
8424 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8425 found_tls_get_addr_arg = 1;
8426 if (retval > 1)
8427 toc_ref[toc_ref_index] = 1;
8428 }
102890f0 8429 }
3a71aa26 8430 continue;
102890f0
AM		 8431 }
8432
8433 if (expecting_tls_get_addr != 1)
8434 continue;
8435
8436 /* Uh oh, we didn't find the expected call. We
8437 could just mark this symbol to exclude it
8438 from tls optimization but it's safer to skip
663a1470 8439 the entire optimization. */
25f53a85 8440 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8441 "TLS optimization disabled\n"),
8442 ibfd, sec, rel->r_offset);
8443 ret = TRUE;
8444 goto err_free_rel;
102890f0
AM		 8445 }
8446
85f7a9cb 8447 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8448 {
8449 struct plt_entry *ent;
8450 for (ent = htab->tls_get_addr->elf.plt.plist;
8451 ent != NULL;
8452 ent = ent->next)
8453 if (ent->addend == 0)
411e1bfb 8454 {
102890f0 8455 if (ent->plt.refcount > 0)
30038c59 8456 {
102890f0
AM		 8457 ent->plt.refcount -= 1;
8458 expecting_tls_get_addr = 0;
30038c59 8459 }
102890f0 8460 break;
411e1bfb 8461 }
102890f0 8462 }
411e1bfb 8463
85f7a9cb 8464 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8465 {
8466 struct plt_entry *ent;
8467 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8468 ent != NULL;
8469 ent = ent->next)
8470 if (ent->addend == 0)
411e1bfb 8471 {
102890f0
AM		 8472 if (ent->plt.refcount > 0)
8473 ent->plt.refcount -= 1;
8474 break;
411e1bfb 8475 }
102890f0 8476 }
411e1bfb 8477
102890f0 8478 if (tls_clear == 0)
30038c59
AM		 8479 continue;
8480
102890f0
AM		 8481 if ((tls_set & TLS_EXPLICIT) == 0)
8482 {
8483 struct got_entry *ent;
411e1bfb 8484
102890f0
AM		 8485 /* Adjust got entry for this reloc. */
8486 if (h != NULL)
8487 ent = h->got.glist;
8488 else
8489 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8490
102890f0
AM		 8491 for (; ent != NULL; ent = ent->next)
8492 if (ent->addend == rel->r_addend
8493 && ent->owner == ibfd
8494 && ent->tls_type == tls_type)
8495 break;
8496 if (ent == NULL)
8497 abort ();
411e1bfb 8498
102890f0
AM		 8499 if (tls_set == 0)
8500 {
8501 /* We managed to get rid of a got entry. */
8502 if (ent->got.refcount > 0)
8503 ent->got.refcount -= 1;
8504 }
8505 }
8506 else
8507 {
8508 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8509 we'll lose one or two dyn relocs. */
8510 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8511 NULL, h, sym))
102890f0 8512 return FALSE;
411e1bfb 8513
102890f0
AM		 8514 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8515 {
8516 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8517 NULL, h, sym))
102890f0
AM		 8518 return FALSE;
8519 }
8520 }
411e1bfb 8521
102890f0
AM		 8522 *tls_mask |= tls_set;
8523 *tls_mask &= ~tls_clear;
8524 }
8c1d1bb8 8525
102890f0
AM		 8526 if (elf_section_data (sec)->relocs != relstart)
8527 free (relstart);
8528 }
411e1bfb 8529
663a1470
AM		 8530 if (locsyms != NULL
8531 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8532 {
8533 if (!info->keep_memory)
8534 free (locsyms);
8535 else
8536 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8537 }
8538 }
411e1bfb 8539
663a1470
AM		 8540 if (toc_ref != NULL)
8541 free (toc_ref);
b34976b6 8542 return TRUE;
1e2f5b6e 8543}
b34976b6 8544
c5614fa4
AM		 8545/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8546 the values of any global symbols in a toc section that has been
8547 edited. Globals in toc sections should be a rarity, so this function
8548 sets a flag if any are found in toc sections other than the one just
8549 edited, so that futher hash table traversals can be avoided. */
8550
8551struct adjust_toc_info
8552{
8553 asection *toc;
8554 unsigned long *skip;
8555 bfd_boolean global_toc_syms;
8556};
8557
ba761f19
AM		 8558enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8559
c5614fa4
AM		 8560static bfd_boolean
8561adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8562{
8563 struct ppc_link_hash_entry *eh;
8564 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8565 unsigned long i;
c5614fa4 8566
c5614fa4
AM		 8567 if (h->root.type != bfd_link_hash_defined
8568 && h->root.type != bfd_link_hash_defweak)
8569 return TRUE;
8570
8571 eh = (struct ppc_link_hash_entry *) h;
8572 if (eh->adjust_done)
8573 return TRUE;
8574
8575 if (eh->elf.root.u.def.section == toc_inf->toc)
8576 {
854b41e7
AM		 8577 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8578 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8579 else
854b41e7
AM		 8580 i = eh->elf.root.u.def.value >> 3;
8581
ba761f19 8582 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8583 {
8584 (*_bfd_error_handler)
854b41e7
AM		 8585 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8586 do
8587 ++i;
ba761f19 8588 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8589 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8590 }
854b41e7
AM		 8591
8592 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8593 eh->adjust_done = 1;
8594 }
8595 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8596 toc_inf->global_toc_syms = TRUE;
8597
8598 return TRUE;
8599}
8600
560c8763
AM		 8601/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8602
8603static bfd_boolean
8604ok_lo_toc_insn (unsigned int insn)
8605{
8606 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8607 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8608 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8609 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8610 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8611 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8612 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8613 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8614 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8615 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8616 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8617 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8618 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8619 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8620 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8621 && (insn & 3) != 1)
8622 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8623 && ((insn & 3) == 0 || (insn & 3) == 3))
8624 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8625}
8626
c5614fa4
AM		 8627/* Examine all relocs referencing .toc sections in order to remove
8628 unused .toc entries. */
8629
8630bfd_boolean
33c0ec9d 8631ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8632{
8633 bfd *ibfd;
8634 struct adjust_toc_info toc_inf;
67f0cbdb 8635 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8636
67f0cbdb 8637 htab->do_toc_opt = 1;
c5614fa4 8638 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8639 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8640 {
8641 asection *toc, *sec;
8642 Elf_Internal_Shdr *symtab_hdr;
8643 Elf_Internal_Sym *local_syms;
425b145b 8644 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8645 unsigned long *skip, *drop;
8646 unsigned char *used;
8647 unsigned char *keep, last, some_unused;
8648
854b41e7
AM		 8649 if (!is_ppc64_elf (ibfd))
8650 continue;
8651
c5614fa4
AM		 8652 toc = bfd_get_section_by_name (ibfd, ".toc");
8653 if (toc == NULL
92b7a70f 8654 || toc->size == 0
dbaa2011
AM		 8655 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8656 || discarded_section (toc))
c5614fa4
AM		 8657 continue;
8658
425b145b 8659 toc_relocs = NULL;
c5614fa4 8660 local_syms = NULL;
0ffa91dd 8661 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8662
8663 /* Look at sections dropped from the final link. */
8664 skip = NULL;
8665 relstart = NULL;
8666 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8667 {
8668 if (sec->reloc_count == 0
dbaa2011 8669 || !discarded_section (sec)
c5614fa4
AM		 8670 || get_opd_info (sec)
8671 || (sec->flags & SEC_ALLOC) == 0
8672 || (sec->flags & SEC_DEBUGGING) != 0)
8673 continue;
8674
8675 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8676 if (relstart == NULL)
8677 goto error_ret;
8678
8679 /* Run through the relocs to see which toc entries might be
8680 unused. */
8681 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8682 {
8683 enum elf_ppc64_reloc_type r_type;
8684 unsigned long r_symndx;
8685 asection *sym_sec;
8686 struct elf_link_hash_entry *h;
8687 Elf_Internal_Sym *sym;
8688 bfd_vma val;
8689
8690 r_type = ELF64_R_TYPE (rel->r_info);
8691 switch (r_type)
8692 {
8693 default:
8694 continue;
8695
8696 case R_PPC64_TOC16:
8697 case R_PPC64_TOC16_LO:
8698 case R_PPC64_TOC16_HI:
8699 case R_PPC64_TOC16_HA:
8700 case R_PPC64_TOC16_DS:
8701 case R_PPC64_TOC16_LO_DS:
8702 break;
8703 }
8704
8705 r_symndx = ELF64_R_SYM (rel->r_info);
8706 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8707 r_symndx, ibfd))
8708 goto error_ret;
8709
8710 if (sym_sec != toc)
8711 continue;
8712
8713 if (h != NULL)
8714 val = h->root.u.def.value;
8715 else
8716 val = sym->st_value;
8717 val += rel->r_addend;
8718
8719 if (val >= toc->size)
8720 continue;
8721
8722 /* Anything in the toc ought to be aligned to 8 bytes.
8723 If not, don't mark as unused. */
8724 if (val & 7)
8725 continue;
8726
8727 if (skip == NULL)
8728 {
854b41e7 8729 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8730 if (skip == NULL)
8731 goto error_ret;
8732 }
8733
ba761f19 8734 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8735 }
8736
8737 if (elf_section_data (sec)->relocs != relstart)
8738 free (relstart);
8739 }
8740
ba761f19
AM		 8741 /* For largetoc loads of address constants, we can convert
8742 . addis rx,2,addr@got@ha
8743 . ld ry,addr@got@l(rx)
8744 to
8745 . addis rx,2,addr@toc@ha
8746 . addi ry,rx,addr@toc@l
8747 when addr is within 2G of the toc pointer. This then means
8748 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8749
ba761f19
AM		 8750 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8751 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8752 && toc->reloc_count != 0)
8753 {
8754 /* Read toc relocs. */
425b145b
AM		 8755 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8756 info->keep_memory);
8757 if (toc_relocs == NULL)
ba761f19
AM		 8758 goto error_ret;
8759
425b145b 8760 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8761 {
8762 enum elf_ppc64_reloc_type r_type;
8763 unsigned long r_symndx;
8764 asection *sym_sec;
8765 struct elf_link_hash_entry *h;
8766 Elf_Internal_Sym *sym;
8767 bfd_vma val, addr;
8768
8769 r_type = ELF64_R_TYPE (rel->r_info);
8770 if (r_type != R_PPC64_ADDR64)
8771 continue;
8772
8773 r_symndx = ELF64_R_SYM (rel->r_info);
8774 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8775 r_symndx, ibfd))
8776 goto error_ret;
8777
425b145b 8778 if (sym_sec == NULL
dbaa2011 8779 || discarded_section (sym_sec))
425b145b
AM		 8780 continue;
8781
afe397ea 8782 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8783 continue;
8784
8785 if (h != NULL)
bddc25c9
AM		 8786 {
8787 if (h->type == STT_GNU_IFUNC)
8788 continue;
8789 val = h->root.u.def.value;
8790 }
ba761f19 8791 else
bddc25c9
AM		 8792 {
8793 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8794 continue;
8795 val = sym->st_value;
8796 }
ba761f19
AM		 8797 val += rel->r_addend;
8798 val += sym_sec->output_section->vma + sym_sec->output_offset;
8799
8800 /* We don't yet know the exact toc pointer value, but we
8801 know it will be somewhere in the toc section. Don't
8802 optimize if the difference from any possible toc
8803 pointer is outside [ff..f80008000, 7fff7fff]. */
8804 addr = toc->output_section->vma + TOC_BASE_OFF;
8805 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8806 continue;
8807
8808 addr = toc->output_section->vma + toc->output_section->rawsize;
8809 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8810 continue;
8811
8812 if (skip == NULL)
8813 {
8814 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8815 if (skip == NULL)
8816 goto error_ret;
8817 }
8818
8819 skip[rel->r_offset >> 3]
425b145b 8820 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8821 }
ba761f19
AM		 8822 }
8823
c5614fa4
AM		 8824 if (skip == NULL)
8825 continue;
8826
8827 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8828 if (used == NULL)
8829 {
8830 error_ret:
8831 if (local_syms != NULL
8832 && symtab_hdr->contents != (unsigned char *) local_syms)
8833 free (local_syms);
8834 if (sec != NULL
8835 && relstart != NULL
8836 && elf_section_data (sec)->relocs != relstart)
8837 free (relstart);
425b145b
AM		 8838 if (toc_relocs != NULL
8839 && elf_section_data (toc)->relocs != toc_relocs)
8840 free (toc_relocs);
c5614fa4
AM		 8841 if (skip != NULL)
8842 free (skip);
8843 return FALSE;
8844 }
8845
30038c59
AM		 8846 /* Now check all kept sections that might reference the toc.
8847 Check the toc itself last. */
8848 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8849 : ibfd->sections);
c5614fa4 8850 sec != NULL;
c5614fa4 8851 sec = (sec == toc ? NULL
c5614fa4 8852 : sec->next == NULL ? toc
30038c59 8853 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8854 : sec->next))
8855 {
8856 int repeat;
8857
8858 if (sec->reloc_count == 0
dbaa2011 8859 || discarded_section (sec)
c5614fa4
AM		 8860 || get_opd_info (sec)
8861 || (sec->flags & SEC_ALLOC) == 0
8862 || (sec->flags & SEC_DEBUGGING) != 0)
8863 continue;
8864
854b41e7
AM		 8865 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8866 info->keep_memory);
c5614fa4 8867 if (relstart == NULL)
2915c55b
JK		 8868 {
8869 free (used);
8870 goto error_ret;
8871 }
c5614fa4
AM		 8872
8873 /* Mark toc entries referenced as used. */
c5614fa4 8874 do
d4f1ee75
AM		 8875 {
8876 repeat = 0;
8877 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8878 {
8879 enum elf_ppc64_reloc_type r_type;
8880 unsigned long r_symndx;
8881 asection *sym_sec;
8882 struct elf_link_hash_entry *h;
8883 Elf_Internal_Sym *sym;
8884 bfd_vma val;
8885 enum {no_check, check_lo, check_ha} insn_check;
98528052 8886
d4f1ee75
AM		 8887 r_type = ELF64_R_TYPE (rel->r_info);
8888 switch (r_type)
8889 {
8890 default:
8891 insn_check = no_check;
8892 break;
98528052 8893
d4f1ee75
AM		 8894 case R_PPC64_GOT_TLSLD16_HA:
8895 case R_PPC64_GOT_TLSGD16_HA:
8896 case R_PPC64_GOT_TPREL16_HA:
8897 case R_PPC64_GOT_DTPREL16_HA:
8898 case R_PPC64_GOT16_HA:
8899 case R_PPC64_TOC16_HA:
8900 insn_check = check_ha;
8901 break;
98528052 8902
d4f1ee75
AM		 8903 case R_PPC64_GOT_TLSLD16_LO:
8904 case R_PPC64_GOT_TLSGD16_LO:
8905 case R_PPC64_GOT_TPREL16_LO_DS:
8906 case R_PPC64_GOT_DTPREL16_LO_DS:
8907 case R_PPC64_GOT16_LO:
8908 case R_PPC64_GOT16_LO_DS:
8909 case R_PPC64_TOC16_LO:
8910 case R_PPC64_TOC16_LO_DS:
8911 insn_check = check_lo;
8912 break;
8913 }
560c8763 8914
d4f1ee75
AM		 8915 if (insn_check != no_check)
8916 {
8917 bfd_vma off = rel->r_offset & ~3;
8918 unsigned char buf[4];
8919 unsigned int insn;
c5614fa4 8920
d4f1ee75
AM		 8921 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8922 {
8923 free (used);
8924 goto error_ret;
8925 }
8926 insn = bfd_get_32 (ibfd, buf);
8927 if (insn_check == check_lo
8928 ? !ok_lo_toc_insn (insn)
8929 : ((insn & ((0x3f << 26) | 0x1f << 16))
8930 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8931 {
8932 char str[12];
8933
8934 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8935 sprintf (str, "%#08x", insn);
8936 info->callbacks->einfo
8937 (_("%P: %H: toc optimization is not supported for"
8938 " %s instruction.\n"),
8939 ibfd, sec, rel->r_offset & ~3, str);
8940 }
8941 }
c5614fa4 8942
d4f1ee75
AM		 8943 switch (r_type)
8944 {
8945 case R_PPC64_TOC16:
8946 case R_PPC64_TOC16_LO:
8947 case R_PPC64_TOC16_HI:
8948 case R_PPC64_TOC16_HA:
8949 case R_PPC64_TOC16_DS:
8950 case R_PPC64_TOC16_LO_DS:
8951 /* In case we're taking addresses of toc entries. */
8952 case R_PPC64_ADDR64:
8953 break;
c5614fa4 8954
d4f1ee75
AM		 8955 default:
8956 continue;
8957 }
c5614fa4 8958
d4f1ee75
AM		 8959 r_symndx = ELF64_R_SYM (rel->r_info);
8960 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8961 r_symndx, ibfd))
8962 {
8963 free (used);
8964 goto error_ret;
8965 }
c5614fa4 8966
d4f1ee75
AM		 8967 if (sym_sec != toc)
8968 continue;
c5614fa4 8969
d4f1ee75
AM		 8970 if (h != NULL)
8971 val = h->root.u.def.value;
8972 else
8973 val = sym->st_value;
8974 val += rel->r_addend;
ba761f19 8975
d4f1ee75
AM		 8976 if (val >= toc->size)
8977 continue;
ba761f19 8978
d4f1ee75
AM		 8979 if ((skip[val >> 3] & can_optimize) != 0)
8980 {
8981 bfd_vma off;
8982 unsigned char opc;
8983
8984 switch (r_type)
8985 {
8986 case R_PPC64_TOC16_HA:
ba761f19 8987 break;
ba761f19 8988
d4f1ee75
AM		 8989 case R_PPC64_TOC16_LO_DS:
8990 off = rel->r_offset;
8991 off += (bfd_big_endian (ibfd) ? -2 : 3);
8992 if (!bfd_get_section_contents (ibfd, sec, &opc,
8993 off, 1))
8994 {
8995 free (used);
8996 goto error_ret;
8997 }
8998 if ((opc & (0x3f << 2)) == (58u << 2))
8999 break;
9000 /* Fall thru */
ba761f19 9001
d4f1ee75
AM		 9002 default:
9003 /* Wrong sort of reloc, or not a ld. We may
9004 as well clear ref_from_discarded too. */
9005 skip[val >> 3] = 0;
9006 }
9007 }
9008
9009 if (sec != toc)
9010 used[val >> 3] = 1;
9011 /* For the toc section, we only mark as used if this
9012 entry itself isn't unused. */
9013 else if ((used[rel->r_offset >> 3]
9014 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9015 && !used[val >> 3])
9016 {
9017 /* Do all the relocs again, to catch reference
9018 chains. */
9019 repeat = 1;
9020 used[val >> 3] = 1;
9021 }
9022 }
9023 }
c5614fa4 9024 while (repeat);
854b41e7
AM		 9025
9026 if (elf_section_data (sec)->relocs != relstart)
9027 free (relstart);
c5614fa4
AM		 9028 }
9029
9030 /* Merge the used and skip arrays. Assume that TOC
9031 doublewords not appearing as either used or unused belong
9032 to to an entry more than one doubleword in size. */
9033 for (drop = skip, keep = used, last = 0, some_unused = 0;
9034 drop < skip + (toc->size + 7) / 8;
9035 ++drop, ++keep)
9036 {
9037 if (*keep)
9038 {
ba761f19
AM		 9039 *drop &= ~ref_from_discarded;
9040 if ((*drop & can_optimize) != 0)
9041 some_unused = 1;
c5614fa4
AM		 9042 last = 0;
9043 }
b140b010 9044 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9045 {
9046 some_unused = 1;
ba761f19 9047 last = ref_from_discarded;
c5614fa4
AM		 9048 }
9049 else
9050 *drop = last;
9051 }
9052
9053 free (used);
9054
9055 if (some_unused)
9056 {
9057 bfd_byte *contents, *src;
9058 unsigned long off;
d62b3684 9059 Elf_Internal_Sym *sym;
ba761f19 9060 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9061
9062 /* Shuffle the toc contents, and at the same time convert the
9063 skip array from booleans into offsets. */
9064 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9065 goto error_ret;
9066
9067 elf_section_data (toc)->this_hdr.contents = contents;
9068
9069 for (src = contents, off = 0, drop = skip;
9070 src < contents + toc->size;
9071 src += 8, ++drop)
9072 {
ba761f19
AM		 9073 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9074 off += 8;
c5614fa4
AM		 9075 else if (off != 0)
9076 {
9077 *drop = off;
9078 memcpy (src - off, src, 8);
9079 }
9080 }
854b41e7 9081 *drop = off;
c5614fa4
AM		 9082 toc->rawsize = toc->size;
9083 toc->size = src - contents - off;
9084
ba761f19
AM		 9085 /* Adjust addends for relocs against the toc section sym,
9086 and optimize any accesses we can. */
c5614fa4
AM		 9087 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9088 {
9089 if (sec->reloc_count == 0
dbaa2011 9090 || discarded_section (sec))
c5614fa4
AM		 9091 continue;
9092
9093 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9094 info->keep_memory);
c5614fa4
AM		 9095 if (relstart == NULL)
9096 goto error_ret;
9097
9098 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9099 {
9100 enum elf_ppc64_reloc_type r_type;
9101 unsigned long r_symndx;
9102 asection *sym_sec;
9103 struct elf_link_hash_entry *h;
854b41e7 9104 bfd_vma val;
c5614fa4
AM		 9105
9106 r_type = ELF64_R_TYPE (rel->r_info);
9107 switch (r_type)
9108 {
9109 default:
9110 continue;
9111
9112 case R_PPC64_TOC16:
9113 case R_PPC64_TOC16_LO:
9114 case R_PPC64_TOC16_HI:
9115 case R_PPC64_TOC16_HA:
9116 case R_PPC64_TOC16_DS:
9117 case R_PPC64_TOC16_LO_DS:
9118 case R_PPC64_ADDR64:
9119 break;
9120 }
9121
9122 r_symndx = ELF64_R_SYM (rel->r_info);
9123 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9124 r_symndx, ibfd))
9125 goto error_ret;
9126
ba761f19 9127 if (sym_sec != toc)
c5614fa4
AM		 9128 continue;
9129
ba761f19
AM		 9130 if (h != NULL)
9131 val = h->root.u.def.value;
9132 else
9133 {
9134 val = sym->st_value;
9135 if (val != 0)
9136 local_toc_syms = TRUE;
9137 }
9138
9139 val += rel->r_addend;
854b41e7
AM		 9140
9141 if (val > toc->rawsize)
9142 val = toc->rawsize;
ba761f19
AM		 9143 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9144 continue;
9145 else if ((skip[val >> 3] & can_optimize) != 0)
9146 {
9147 Elf_Internal_Rela *tocrel
425b145b 9148 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9149 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9150
9151 switch (r_type)
9152 {
9153 case R_PPC64_TOC16_HA:
9154 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9155 break;
9156
9157 case R_PPC64_TOC16_LO_DS:
9158 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9159 break;
9160
9161 default:
28942f62
AM		 9162 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9163 ppc_howto_init ();
b140b010 9164 info->callbacks->einfo
bc30df16 9165 (_("%P: %H: %s references "
b140b010
AM		 9166 "optimized away TOC entry\n"),
9167 ibfd, sec, rel->r_offset,
9168 ppc64_elf_howto_table[r_type]->name);
9169 bfd_set_error (bfd_error_bad_value);
9170 goto error_ret;
ba761f19
AM		 9171 }
9172 rel->r_addend = tocrel->r_addend;
9173 elf_section_data (sec)->relocs = relstart;
9174 continue;
9175 }
9176
9177 if (h != NULL || sym->st_value != 0)
9178 continue;
854b41e7
AM		 9179
9180 rel->r_addend -= skip[val >> 3];
9181 elf_section_data (sec)->relocs = relstart;
c5614fa4 9182 }
854b41e7
AM		 9183
9184 if (elf_section_data (sec)->relocs != relstart)
9185 free (relstart);
c5614fa4
AM		 9186 }
9187
9188 /* We shouldn't have local or global symbols defined in the TOC,
9189 but handle them anyway. */
df22d223
AM		 9190 if (local_syms != NULL)
9191 for (sym = local_syms;
9192 sym < local_syms + symtab_hdr->sh_info;
9193 ++sym)
9194 if (sym->st_value != 0
9195 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9196 {
9197 unsigned long i;
854b41e7 9198
df22d223
AM		 9199 if (sym->st_value > toc->rawsize)
9200 i = toc->rawsize >> 3;
9201 else
9202 i = sym->st_value >> 3;
854b41e7 9203
df22d223
AM		 9204 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9205 {
9206 if (local_toc_syms)
9207 (*_bfd_error_handler)
9208 (_("%s defined on removed toc entry"),
9209 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9210 do
9211 ++i;
9212 while ((skip[i] & (ref_from_discarded | can_optimize)));
9213 sym->st_value = (bfd_vma) i << 3;
9214 }
d62b3684 9215
df22d223
AM		 9216 sym->st_value -= skip[i];
9217 symtab_hdr->contents = (unsigned char *) local_syms;
9218 }
c5614fa4 9219
854b41e7 9220 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9221 if (toc_inf.global_toc_syms)
9222 {
9223 toc_inf.toc = toc;
9224 toc_inf.skip = skip;
9225 toc_inf.global_toc_syms = FALSE;
9226 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9227 &toc_inf);
9228 }
854b41e7
AM		 9229
9230 if (toc->reloc_count != 0)
9231 {
d4730f92 9232 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9233 Elf_Internal_Rela *wrel;
9234 bfd_size_type sz;
9235
854b41e7 9236 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9237 if (toc_relocs == NULL)
9238 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9239 info->keep_memory);
9240 if (toc_relocs == NULL)
9241 goto error_ret;
9242
425b145b
AM		 9243 wrel = toc_relocs;
9244 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9245 if ((skip[rel->r_offset >> 3]
9246 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9247 {
9248 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9249 wrel->r_info = rel->r_info;
9250 wrel->r_addend = rel->r_addend;
9251 ++wrel;
9252 }
9253 else if (!dec_dynrel_count (rel->r_info, toc, info,
9254 &local_syms, NULL, NULL))
9255 goto error_ret;
9256
425b145b
AM		 9257 elf_section_data (toc)->relocs = toc_relocs;
9258 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9259 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9260 sz = rel_hdr->sh_entsize;
9261 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9262 }
c5614fa4 9263 }
28be611c
AM		 9264 else if (toc_relocs != NULL
9265 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9266 free (toc_relocs);
c5614fa4
AM		 9267
9268 if (local_syms != NULL
9269 && symtab_hdr->contents != (unsigned char *) local_syms)
9270 {
9271 if (!info->keep_memory)
9272 free (local_syms);
9273 else
9274 symtab_hdr->contents = (unsigned char *) local_syms;
9275 }
9276 free (skip);
9277 }
9278
9279 return TRUE;
9280}
9281
1bbe0902
AM		 9282/* Return true iff input section I references the TOC using
9283 instructions limited to +/-32k offsets. */
9284
9285bfd_boolean
9286ppc64_elf_has_small_toc_reloc (asection *i)
9287{
9288 return (is_ppc64_elf (i->owner)
9289 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9290}
9291
927be08e
AM		 9292/* Allocate space for one GOT entry. */
9293
9294static void
9295allocate_got (struct elf_link_hash_entry *h,
9296 struct bfd_link_info *info,
9297 struct got_entry *gent)
9298{
9299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9300 bfd_boolean dyn;
9301 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9302 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9303 ? 16 : 8);
9304 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9305 ? 2 : 1) * sizeof (Elf64_External_Rela);
9306 asection *got = ppc64_elf_tdata (gent->owner)->got;
9307
9308 gent->got.offset = got->size;
9309 got->size += entsize;
9310
9311 dyn = htab->elf.dynamic_sections_created;
19e08130 9312 if (h->type == STT_GNU_IFUNC)
927be08e 9313 {
33e44f2e 9314 htab->elf.irelplt->size += rentsize;
19e08130 9315 htab->got_reli_size += rentsize;
927be08e 9316 }
19e08130
AM		 9317 else if ((info->shared
9318 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9319 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9320 || h->root.type != bfd_link_hash_undefweak))
927be08e 9321 {
19e08130 9322 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9323 relgot->size += rentsize;
927be08e
AM		 9324 }
9325}
9326
7865406b
AM		 9327/* This function merges got entries in the same toc group. */
9328
9329static void
9330merge_got_entries (struct got_entry **pent)
9331{
9332 struct got_entry *ent, *ent2;
9333
9334 for (ent = *pent; ent != NULL; ent = ent->next)
9335 if (!ent->is_indirect)
9336 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9337 if (!ent2->is_indirect
9338 && ent2->addend == ent->addend
9339 && ent2->tls_type == ent->tls_type
9340 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9341 {
9342 ent2->is_indirect = TRUE;
9343 ent2->got.ent = ent;
9344 }
9345}
9346
65f38f15
AM		 9347/* Allocate space in .plt, .got and associated reloc sections for
9348 dynamic relocs. */
5bd4f169 9349
b34976b6 9350static bfd_boolean
4ce794b7 9351allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9352{
65f38f15
AM		 9353 struct bfd_link_info *info;
9354 struct ppc_link_hash_table *htab;
5bd4f169 9355 asection *s;
65f38f15 9356 struct ppc_link_hash_entry *eh;
6061a67d 9357 struct elf_dyn_relocs *p;
0b8bcf0d 9358 struct got_entry **pgent, *gent;
5bd4f169 9359
e92d460e 9360 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9361 return TRUE;
5bd4f169 9362
65f38f15
AM		 9363 info = (struct bfd_link_info *) inf;
9364 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9365 if (htab == NULL)
9366 return FALSE;
5bd4f169 9367
e054468f
AM		 9368 if ((htab->elf.dynamic_sections_created
9369 && h->dynindx != -1
9370 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9371 || h->type == STT_GNU_IFUNC)
5bd4f169 9372 {
411e1bfb
AM		 9373 struct plt_entry *pent;
9374 bfd_boolean doneone = FALSE;
9375 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9376 if (pent->plt.refcount > 0)
9377 {
25f23106
AM		 9378 if (!htab->elf.dynamic_sections_created
9379 || h->dynindx == -1)
e054468f 9380 {
33e44f2e 9381 s = htab->elf.iplt;
e054468f 9382 pent->plt.offset = s->size;
b9e5796b 9383 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9384 s = htab->elf.irelplt;
e054468f
AM		 9385 }
9386 else
9387 {
9388 /* If this is the first .plt entry, make room for the special
9389 first entry. */
33e44f2e 9390 s = htab->elf.splt;
e054468f 9391 if (s->size == 0)
b9e5796b 9392 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9393
9394 pent->plt.offset = s->size;
9395
9396 /* Make room for this entry. */
b9e5796b 9397 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9398
9399 /* Make room for the .glink code. */
9400 s = htab->glink;
9401 if (s->size == 0)
9402 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9403 if (htab->opd_abi)
9404 {
9405 /* We need bigger stubs past index 32767. */
9406 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9407 s->size += 4;
9408 s->size += 2*4;
9409 }
9410 else
e054468f 9411 s->size += 4;
e054468f
AM		 9412
9413 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9414 s = htab->elf.srelplt;
e054468f 9415 }
eea6121a 9416 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9417 doneone = TRUE;
9418 }
9419 else
9420 pent->plt.offset = (bfd_vma) -1;
9421 if (!doneone)
65f38f15 9422 {
411e1bfb 9423 h->plt.plist = NULL;
f5385ebf 9424 h->needs_plt = 0;
65f38f15
AM		 9425 }
9426 }
9427 else
9428 {
411e1bfb 9429 h->plt.plist = NULL;
f5385ebf 9430 h->needs_plt = 0;
65f38f15
AM		 9431 }
9432
951fd09b
AM		 9433 eh = (struct ppc_link_hash_entry *) h;
9434 /* Run through the TLS GD got entries first if we're changing them
9435 to TPREL. */
e7b938ca 9436 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9437 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9438 if (gent->got.refcount > 0
9439 && (gent->tls_type & TLS_GD) != 0)
9440 {
9441 /* This was a GD entry that has been converted to TPREL. If
9442 there happens to be a TPREL entry we can use that one. */
9443 struct got_entry *ent;
9444 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9445 if (ent->got.refcount > 0
9446 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9447 && ent->addend == gent->addend
9448 && ent->owner == gent->owner)
951fd09b
AM		 9449 {
9450 gent->got.refcount = 0;
9451 break;
9452 }
9453
9454 /* If not, then we'll be using our own TPREL entry. */
9455 if (gent->got.refcount != 0)
9456 gent->tls_type = TLS_TLS | TLS_TPREL;
9457 }
9458
7865406b
AM		 9459 /* Remove any list entry that won't generate a word in the GOT before
9460 we call merge_got_entries. Otherwise we risk merging to empty
9461 entries. */
0b8bcf0d
AM		 9462 pgent = &h->got.glist;
9463 while ((gent = *pgent) != NULL)
411e1bfb 9464 if (gent->got.refcount > 0)
7865406b
AM		 9465 {
9466 if ((gent->tls_type & TLS_LD) != 0
9467 && !h->def_dynamic)
9468 {
9469 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9470 *pgent = gent->next;
9471 }
9472 else
9473 pgent = &gent->next;
9474 }
9475 else
9476 *pgent = gent->next;
9477
9478 if (!htab->do_multi_toc)
9479 merge_got_entries (&h->got.glist);
9480
9481 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9482 if (!gent->is_indirect)
411e1bfb
AM		 9483 {
9484 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9485 Undefined weak syms won't yet be marked as dynamic,
9486 nor will all TLS symbols. */
411e1bfb 9487 if (h->dynindx == -1
b099ab9f 9488 && !h->forced_local
25f23106 9489 && h->type != STT_GNU_IFUNC
b099ab9f 9490 && htab->elf.dynamic_sections_created)
411e1bfb 9491 {
c152c796 9492 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9493 return FALSE;
9494 }
65f38f15 9495
0c8d6e5c 9496 if (!is_ppc64_elf (gent->owner))
927be08e 9497 abort ();
0ffa91dd 9498
927be08e 9499 allocate_got (h, info, gent);
411e1bfb 9500 }
65f38f15 9501
b099ab9f 9502 if (eh->dyn_relocs == NULL
25f23106 9503 || (!htab->elf.dynamic_sections_created
14b5f73f 9504 && h->type != STT_GNU_IFUNC))
b34976b6 9505 return TRUE;
65f38f15
AM		 9506
9507 /* In the shared -Bsymbolic case, discard space allocated for
9508 dynamic pc-relative relocs against symbols which turn out to be
9509 defined in regular objects. For the normal shared case, discard
9510 space for relocs that have become local due to symbol visibility
9511 changes. */
9512
9513 if (info->shared)
9514 {
9c7a29a3 9515 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9516 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9517 generated via assembly. We want calls to protected symbols to
9518 resolve directly to the function rather than going via the plt.
9519 If people want function pointer comparisons to work as expected
9520 then they should avoid writing weird assembly. */
09695f56 9521 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9522 {
6061a67d 9523 struct elf_dyn_relocs **pp;
65f38f15
AM		 9524
9525 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9526 {
65f38f15
AM		 9527 p->count -= p->pc_count;
9528 p->pc_count = 0;
9529 if (p->count == 0)
9530 *pp = p->next;
9531 else
9532 pp = &p->next;
5bd4f169 9533 }
65f38f15 9534 }
4e795f50
AM		 9535
9536 /* Also discard relocs on undefined weak syms with non-default
9537 visibility. */
cab87ef9
AM		 9538 if (eh->dyn_relocs != NULL
9539 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9540 {
9541 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9542 eh->dyn_relocs = NULL;
9543
9544 /* Make sure this symbol is output as a dynamic symbol.
9545 Undefined weak syms won't yet be marked as dynamic. */
9546 else if (h->dynindx == -1
9547 && !h->forced_local)
9548 {
9549 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9550 return FALSE;
9551 }
9552 }
65f38f15 9553 }
25f23106
AM		 9554 else if (h->type == STT_GNU_IFUNC)
9555 {
9556 if (!h->non_got_ref)
9557 eh->dyn_relocs = NULL;
9558 }
f4656909 9559 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9560 {
9561 /* For the non-shared case, discard space for relocs against
9562 symbols which turn out to need copy relocs or are not
9563 dynamic. */
9564
f5385ebf 9565 if (!h->non_got_ref
f5385ebf 9566 && !h->def_regular)
65f38f15
AM		 9567 {
9568 /* Make sure this symbol is output as a dynamic symbol.
9569 Undefined weak syms won't yet be marked as dynamic. */
9570 if (h->dynindx == -1
f5385ebf 9571 && !h->forced_local)
65f38f15 9572 {
c152c796 9573 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9574 return FALSE;
65f38f15
AM		 9575 }
9576
9577 /* If that succeeded, we know we'll be keeping all the
9578 relocs. */
9579 if (h->dynindx != -1)
9580 goto keep;
9581 }
9582
9583 eh->dyn_relocs = NULL;
9584
ec338859 9585 keep: ;
65f38f15
AM		 9586 }
9587
9588 /* Finally, allocate space. */
9589 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9590 {
9591 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9592 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9593 sreloc = htab->elf.irelplt;
eea6121a 9594 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9595 }
9596
b34976b6 9597 return TRUE;
65f38f15
AM		 9598}
9599
a345bc8d
AM		 9600/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9601 to set up space for global entry stubs. These are put in glink,
9602 after the branch table. */
65f38f15 9603
b34976b6 9604static bfd_boolean
a345bc8d 9605size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9606{
a345bc8d
AM		 9607 struct bfd_link_info *info;
9608 struct ppc_link_hash_table *htab;
9609 struct plt_entry *pent;
9610 asection *s;
65f38f15 9611
a345bc8d
AM		 9612 if (h->root.type == bfd_link_hash_indirect)
9613 return TRUE;
65f38f15 9614
a345bc8d
AM		 9615 if (!h->pointer_equality_needed)
9616 return TRUE;
65f38f15 9617
a345bc8d
AM		 9618 if (h->def_regular)
9619 return TRUE;
65f38f15 9620
a345bc8d
AM		 9621 info = inf;
9622 htab = ppc_hash_table (info);
9623 if (htab == NULL)
9624 return FALSE;
9625
9626 s = htab->glink;
9627 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9628 if (pent->plt.offset != (bfd_vma) -1
9629 && pent->addend == 0)
9630 {
afe397ea
AM		 9631 /* For ELFv2, if this symbol is not defined in a regular file
9632 and we are not generating a shared library or pie, then we
9633 need to define the symbol in the executable on a call stub.
9634 This is to avoid text relocations. */
a345bc8d 9635 s->size = (s->size + 15) & -16;
afe397ea
AM		 9636 h->root.u.def.section = s;
9637 h->root.u.def.value = s->size;
a345bc8d
AM		 9638 s->size += 16;
9639 break;
9640 }
9641 return TRUE;
9642}
9643
9644/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9645 read-only sections. */
9646
9647static bfd_boolean
9648maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9649{
9650 if (h->root.type == bfd_link_hash_indirect)
9651 return TRUE;
9652
9653 if (readonly_dynrelocs (h))
9654 {
9655 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9656
9657 /* Not an error, just cut short the traversal. */
9658 return FALSE;
65f38f15 9659 }
b34976b6 9660 return TRUE;
65f38f15
AM		 9661}
9662
9663/* Set the sizes of the dynamic sections. */
9664
b34976b6 9665static bfd_boolean
ee67d69a 9666ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9667 struct bfd_link_info *info)
65f38f15
AM		 9668{
9669 struct ppc_link_hash_table *htab;
9670 bfd *dynobj;
9671 asection *s;
b34976b6 9672 bfd_boolean relocs;
65f38f15 9673 bfd *ibfd;
7865406b 9674 struct got_entry *first_tlsld;
65f38f15
AM		 9675
9676 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9677 if (htab == NULL)
9678 return FALSE;
9679
65f38f15
AM		 9680 dynobj = htab->elf.dynobj;
9681 if (dynobj == NULL)
9682 abort ();
9683
9684 if (htab->elf.dynamic_sections_created)
9685 {
9686 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9687 if (info->executable)
65f38f15 9688 {
3d4d4302 9689 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9690 if (s == NULL)
9691 abort ();
eea6121a 9692 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9693 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9694 }
9695 }
9696
9697 /* Set up .got offsets for local syms, and space for local dynamic
9698 relocs. */
c72f2fb2 9699 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9700 {
411e1bfb
AM		 9701 struct got_entry **lgot_ents;
9702 struct got_entry **end_lgot_ents;
e054468f
AM		 9703 struct plt_entry **local_plt;
9704 struct plt_entry **end_local_plt;
f961d9dd 9705 unsigned char *lgot_masks;
65f38f15
AM		 9706 bfd_size_type locsymcount;
9707 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9708
0c8d6e5c 9709 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9710 continue;
9711
9712 for (s = ibfd->sections; s != NULL; s = s->next)
9713 {
19e08130 9714 struct ppc_dyn_relocs *p;
65f38f15 9715
6edfbbad 9716 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9717 {
ec338859
AM		 9718 if (!bfd_is_abs_section (p->sec)
9719 && bfd_is_abs_section (p->sec->output_section))
9720 {
9721 /* Input section has been discarded, either because
9722 it is a copy of a linkonce section or due to
9723 linker script /DISCARD/, so we'll be discarding
9724 the relocs too. */
9725 }
248866a8 9726 else if (p->count != 0)
ec338859 9727 {
19e08130
AM		 9728 asection *srel = elf_section_data (p->sec)->sreloc;
9729 if (p->ifunc)
33e44f2e 9730 srel = htab->elf.irelplt;
eea6121a 9731 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9732 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9733 info->flags |= DF_TEXTREL;
ec338859 9734 }
65f38f15
AM		 9735 }
9736 }
9737
411e1bfb
AM		 9738 lgot_ents = elf_local_got_ents (ibfd);
9739 if (!lgot_ents)
65f38f15
AM		 9740 continue;
9741
0ffa91dd 9742 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9743 locsymcount = symtab_hdr->sh_info;
411e1bfb 9744 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9745 local_plt = (struct plt_entry **) end_lgot_ents;
9746 end_local_plt = local_plt + locsymcount;
f961d9dd 9747 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9748 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9749 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9750 {
0b8bcf0d 9751 struct got_entry **pent, *ent;
411e1bfb 9752
0b8bcf0d
AM		 9753 pent = lgot_ents;
9754 while ((ent = *pent) != NULL)
411e1bfb
AM		 9755 if (ent->got.refcount > 0)
9756 {
e7b938ca 9757 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9758 {
927be08e 9759 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9760 *pent = ent->next;
411e1bfb
AM		 9761 }
9762 else
9763 {
19e08130
AM		 9764 unsigned int ent_size = 8;
9765 unsigned int rel_size = sizeof (Elf64_External_Rela);
9766
eea6121a 9767 ent->got.offset = s->size;
e7b938ca 9768 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9769 {
19e08130
AM		 9770 ent_size *= 2;
9771 rel_size *= 2;
9772 }
9773 s->size += ent_size;
9774 if ((*lgot_masks & PLT_IFUNC) != 0)
9775 {
33e44f2e 9776 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9777 htab->got_reli_size += rel_size;
9778 }
9779 else if (info->shared)
9780 {
9781 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9782 srel->size += rel_size;
927be08e 9783 }
0b8bcf0d 9784 pent = &ent->next;
411e1bfb
AM		 9785 }
9786 }
9787 else
0b8bcf0d 9788 *pent = ent->next;
65f38f15 9789 }
e054468f
AM		 9790
9791 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9792 for (; local_plt < end_local_plt; ++local_plt)
9793 {
9794 struct plt_entry *ent;
9795
9796 for (ent = *local_plt; ent != NULL; ent = ent->next)
9797 if (ent->plt.refcount > 0)
9798 {
33e44f2e 9799 s = htab->elf.iplt;
e054468f 9800 ent->plt.offset = s->size;
b9e5796b 9801 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9802
33e44f2e 9803 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9804 }
9805 else
9806 ent->plt.offset = (bfd_vma) -1;
9807 }
65f38f15
AM		 9808 }
9809
9810 /* Allocate global sym .plt and .got entries, and space for global
9811 sym dynamic relocs. */
4ce794b7 9812 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9813 /* Stash the end of glink branch table. */
9814 if (htab->glink != NULL)
9815 htab->glink->rawsize = htab->glink->size;
9816
9817 if (!htab->opd_abi && !info->shared)
9818 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9819
7865406b 9820 first_tlsld = NULL;
c72f2fb2 9821 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9822 {
7865406b
AM		 9823 struct got_entry *ent;
9824
0c8d6e5c 9825 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9826 continue;
9827
7865406b
AM		 9828 ent = ppc64_tlsld_got (ibfd);
9829 if (ent->got.refcount > 0)
102890f0 9830 {
7865406b 9831 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9832 {
7865406b
AM		 9833 ent->is_indirect = TRUE;
9834 ent->got.ent = first_tlsld;
9835 }
9836 else
9837 {
9838 if (first_tlsld == NULL)
9839 first_tlsld = ent;
9840 s = ppc64_elf_tdata (ibfd)->got;
9841 ent->got.offset = s->size;
9842 ent->owner = ibfd;
9843 s->size += 16;
9844 if (info->shared)
9845 {
9846 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9847 srel->size += sizeof (Elf64_External_Rela);
9848 }
102890f0
AM		 9849 }
9850 }
9851 else
7865406b 9852 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9853 }
9854
65f38f15
AM		 9855 /* We now have determined the sizes of the various dynamic sections.
9856 Allocate memory for them. */
b34976b6 9857 relocs = FALSE;
65f38f15
AM		 9858 for (s = dynobj->sections; s != NULL; s = s->next)
9859 {
9860 if ((s->flags & SEC_LINKER_CREATED) == 0)
9861 continue;
9862
4ce794b7 9863 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9864 /* These haven't been allocated yet; don't strip. */
9865 continue;
33e44f2e
AM		 9866 else if (s == htab->elf.sgot
9867 || s == htab->elf.splt
9868 || s == htab->elf.iplt
c456f082
AM		 9869 || s == htab->glink
9870 || s == htab->dynbss)
65f38f15
AM		 9871 {
9872 /* Strip this section if we don't need it; see the
9873 comment below. */
5bd4f169 9874 }
58d180e8
AM		 9875 else if (s == htab->glink_eh_frame)
9876 {
9877 if (!bfd_is_abs_section (s->output_section))
9878 /* Not sized yet. */
9879 continue;
9880 }
70cc837d 9881 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9882 {
c456f082 9883 if (s->size != 0)
5bd4f169 9884 {
33e44f2e 9885 if (s != htab->elf.srelplt)
b34976b6 9886 relocs = TRUE;
5bd4f169
AM		 9887
9888 /* We use the reloc_count field as a counter if we need
9889 to copy relocs into the output file. */
9890 s->reloc_count = 0;
9891 }
9892 }
65f38f15 9893 else
5bd4f169
AM		 9894 {
9895 /* It's not one of our sections, so don't allocate space. */
9896 continue;
9897 }
9898
eea6121a 9899 if (s->size == 0)
5bd4f169 9900 {
c456f082
AM		 9901 /* If we don't need this section, strip it from the
9902 output file. This is mostly to handle .rela.bss and
9903 .rela.plt. We must create both sections in
9904 create_dynamic_sections, because they must be created
9905 before the linker maps input sections to output
9906 sections. The linker does that before
9907 adjust_dynamic_symbol is called, and it is that
9908 function which decides whether anything needs to go
9909 into these sections. */
8423293d 9910 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9911 continue;
9912 }
9913
c456f082 9914 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9915 continue;
9916
65f38f15
AM		 9917 /* Allocate memory for the section contents. We use bfd_zalloc
9918 here in case unused entries are not reclaimed before the
9919 section's contents are written out. This should not happen,
411e1bfb
AM		 9920 but this way if it does we get a R_PPC64_NONE reloc in .rela
9921 sections instead of garbage.
9922 We also rely on the section contents being zero when writing
9923 the GOT. */
eea6121a 9924 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9925 if (s->contents == NULL)
b34976b6 9926 return FALSE;
5bd4f169
AM		 9927 }
9928
c72f2fb2 9929 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9930 {
0c8d6e5c 9931 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9932 continue;
9933
e717da7e 9934 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9935 if (s != NULL && s != htab->elf.sgot)
e717da7e 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 }
9945 }
9946 s = ppc64_elf_tdata (ibfd)->relgot;
9947 if (s != NULL)
9948 {
eea6121a 9949 if (s->size == 0)
8423293d 9950 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9951 else
9952 {
eea6121a 9953 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9954 if (s->contents == NULL)
9955 return FALSE;
9956 relocs = TRUE;
9957 s->reloc_count = 0;
9958 }
9959 }
9960 }
9961
e86ce104 9962 if (htab->elf.dynamic_sections_created)
5bd4f169 9963 {
e8910a83
AM		 9964 bfd_boolean tls_opt;
9965
5bd4f169
AM		 9966 /* Add some entries to the .dynamic section. We fill in the
9967 values later, in ppc64_elf_finish_dynamic_sections, but we
9968 must add the entries now so that we get the correct size for
9969 the .dynamic section. The DT_DEBUG entry is filled in by the
9970 dynamic linker and used by the debugger. */
dc810e39 9971#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9972 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9973
36af4a4e 9974 if (info->executable)
5bd4f169 9975 {
dc810e39 9976 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9977 return FALSE;
5bd4f169
AM		 9978 }
9979
33e44f2e 9980 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 9981 {
dc810e39
AM		 9982 if (!add_dynamic_entry (DT_PLTGOT, 0)
9983 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9984 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 9985 || !add_dynamic_entry (DT_JMPREL, 0)
9986 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 9987 return FALSE;
5bd4f169
AM		 9988 }
9989
ee67d69a 9990 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 9991 {
9992 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9993 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 9994 return FALSE;
19397422
AM		 9995 }
9996
e7d1c40c 9997 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 9998 && htab->tls_get_addr_fd != NULL
9999 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10000 if (tls_opt || !htab->opd_abi)
10001 {
10002 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10003 return FALSE;
10004 }
a7f2871e 10005
5bd4f169
AM		 10006 if (relocs)
10007 {
dc810e39
AM		 10008 if (!add_dynamic_entry (DT_RELA, 0)
10009 || !add_dynamic_entry (DT_RELASZ, 0)
10010 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10011 return FALSE;
5bd4f169 10012
65f38f15
AM		 10013 /* If any dynamic relocs apply to a read-only section,
10014 then we need a DT_TEXTREL entry. */
248866a8 10015 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10016 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10017
65f38f15 10018 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10019 {
65f38f15 10020 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10021 return FALSE;
5bd4f169 10022 }
5bd4f169 10023 }
5bd4f169 10024 }
65f38f15 10025#undef add_dynamic_entry
5bd4f169 10026
b34976b6 10027 return TRUE;
5bd4f169
AM		 10028}
10029
a345bc8d
AM		 10030/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10031
10032static bfd_boolean
10033ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10034{
10035 if (h->plt.plist != NULL
10036 && !h->def_regular
10037 && !h->pointer_equality_needed)
10038 return FALSE;
10039
10040 return _bfd_elf_hash_symbol (h);
10041}
10042
721956f4 10043/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10044
4ce794b7
AM		 10045static inline enum ppc_stub_type
10046ppc_type_of_stub (asection *input_sec,
10047 const Elf_Internal_Rela *rel,
10048 struct ppc_link_hash_entry **hash,
e054468f 10049 struct plt_entry **plt_ent,
6911b7dc
AM		 10050 bfd_vma destination,
10051 unsigned long local_off)
5bd4f169 10052{
721956f4
AM		 10053 struct ppc_link_hash_entry *h = *hash;
10054 bfd_vma location;
10055 bfd_vma branch_offset;
10056 bfd_vma max_branch_offset;
4ce794b7 10057 enum elf_ppc64_reloc_type r_type;
5bd4f169 10058
721956f4
AM		 10059 if (h != NULL)
10060 {
e054468f 10061 struct plt_entry *ent;
7fe2b9a6 10062 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10063 if (h->oh != NULL
10064 && h->oh->is_func_descriptor)
7b8f6675
AM		 10065 {
10066 fdh = ppc_follow_link (h->oh);
10067 *hash = fdh;
10068 }
8387904d 10069
e054468f
AM		 10070 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10071 if (ent->addend == rel->r_addend
10072 && ent->plt.offset != (bfd_vma) -1)
10073 {
e054468f
AM		 10074 *plt_ent = ent;
10075 return ppc_stub_plt_call;
10076 }
5bd4f169 10077
7fe2b9a6
AM		 10078 /* Here, we know we don't have a plt entry. If we don't have a
10079 either a defined function descriptor or a defined entry symbol
10080 in a regular object file, then it is pointless trying to make
10081 any other type of stub. */
854b41e7
AM		 10082 if (!is_static_defined (&fdh->elf)
10083 && !is_static_defined (&h->elf))
721956f4 10084 return ppc_stub_none;
5d1634d7 10085 }
e054468f
AM		 10086 else if (elf_local_got_ents (input_sec->owner) != NULL)
10087 {
10088 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10089 struct plt_entry **local_plt = (struct plt_entry **)
10090 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10091 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10092
10093 if (local_plt[r_symndx] != NULL)
10094 {
10095 struct plt_entry *ent;
10096
10097 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10098 if (ent->addend == rel->r_addend
10099 && ent->plt.offset != (bfd_vma) -1)
10100 {
10101 *plt_ent = ent;
10102 return ppc_stub_plt_call;
10103 }
10104 }
10105 }
5d1634d7 10106
721956f4
AM		 10107 /* Determine where the call point is. */
10108 location = (input_sec->output_offset
10109 + input_sec->output_section->vma
10110 + rel->r_offset);
5d1634d7 10111
721956f4
AM		 10112 branch_offset = destination - location;
10113 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10114
721956f4
AM		 10115 /* Determine if a long branch stub is needed. */
10116 max_branch_offset = 1 << 25;
4ce794b7 10117 if (r_type != R_PPC64_REL24)
721956f4 10118 max_branch_offset = 1 << 15;
5d1634d7 10119
6911b7dc 10120 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10121 /* We need a stub. Figure out whether a long_branch or plt_branch
10122 is needed later. */
10123 return ppc_stub_long_branch;
5d1634d7 10124
721956f4 10125 return ppc_stub_none;
5d1634d7
AM		 10126}
10127
794e51c0
AM		 10128/* With power7 weakly ordered memory model, it is possible for ld.so
10129 to update a plt entry in one thread and have another thread see a
10130 stale zero toc entry. To avoid this we need some sort of acquire
10131 barrier in the call stub. One solution is to make the load of the
10132 toc word seem to appear to depend on the load of the function entry
10133 word. Another solution is to test for r2 being zero, and branch to
10134 the appropriate glink entry if so.
10135
10136 . fake dep barrier compare
71a39c98
AM		 10137 . ld 12,xxx(2) ld 12,xxx(2)
10138 . mtctr 12 mtctr 12
10139 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10140 . add 2,2,11 cmpldi 2,0
10141 . ld 2,xxx+8(2) bnectr+
10142 . bctr b <glink_entry>
10143
10144 The solution involving the compare turns out to be faster, so
10145 that's what we use unless the branch won't reach. */
10146
10147#define ALWAYS_USE_FAKE_DEP 0
10148#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10149
5d1634d7
AM		 10150#define PPC_LO(v) ((v) & 0xffff)
10151#define PPC_HI(v) (((v) >> 16) & 0xffff)
10152#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10153
794e51c0
AM		 10154static inline unsigned int
10155plt_stub_size (struct ppc_link_hash_table *htab,
10156 struct ppc_stub_hash_entry *stub_entry,
10157 bfd_vma off)
10158{
b9e5796b
AM		 10159 unsigned size = 12;
10160
10161 if (ALWAYS_EMIT_R2SAVE
10162 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10163 size += 4;
10164 if (PPC_HA (off) != 0)
794e51c0 10165 size += 4;
b9e5796b
AM		 10166 if (htab->opd_abi)
10167 {
10168 size += 4;
e7d1c40c 10169 if (htab->params->plt_static_chain)
b9e5796b 10170 size += 4;
e7d1c40c 10171 if (htab->params->plt_thread_safe)
b9e5796b 10172 size += 8;
e7d1c40c 10173 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10174 size += 4;
10175 }
794e51c0
AM		 10176 if (stub_entry->h != NULL
10177 && (stub_entry->h == htab->tls_get_addr_fd
10178 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10179 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10180 size += 13 * 4;
10181 return size;
10182}
10183
10184/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10185 then return the padding needed to do so. */
10186static inline unsigned int
10187plt_stub_pad (struct ppc_link_hash_table *htab,
10188 struct ppc_stub_hash_entry *stub_entry,
10189 bfd_vma plt_off)
10190{
e7d1c40c 10191 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0
AM		 10192 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10193 bfd_vma stub_off = stub_entry->stub_sec->size;
10194
10195 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10196 > (stub_size & -stub_align))
10197 return stub_align - (stub_off & (stub_align - 1));
10198 return 0;
10199}
10200
10201/* Build a .plt call stub. */
10202
10203static inline bfd_byte *
10204build_plt_stub (struct ppc_link_hash_table *htab,
10205 struct ppc_stub_hash_entry *stub_entry,
10206 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10207{
e7d1c40c 10208 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10209 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c
AM		 10210 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10211 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
794e51c0
AM		 10212 bfd_boolean use_fake_dep = plt_thread_safe;
10213 bfd_vma cmp_branch_off = 0;
10214
10215 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10216 && plt_load_toc
794e51c0
AM		 10217 && plt_thread_safe
10218 && !(stub_entry->h != NULL
10219 && (stub_entry->h == htab->tls_get_addr_fd
10220 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10221 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10222 {
10223 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10224 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10225 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10226 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10227 bfd_vma to, from;
10228
68d62958
AM		 10229 if (pltindex > 32768)
10230 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10231 to = (glinkoff
10232 + htab->glink->output_offset
10233 + htab->glink->output_section->vma);
10234 from = (p - stub_entry->stub_sec->contents
10235 + 4 * (ALWAYS_EMIT_R2SAVE
10236 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10237 + 4 * (PPC_HA (offset) != 0)
10238 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10239 != PPC_HA (offset))
10240 + 4 * (plt_static_chain != 0)
10241 + 20
10242 + stub_entry->stub_sec->output_offset
10243 + stub_entry->stub_sec->output_section->vma);
10244 cmp_branch_off = to - from;
10245 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10246 }
10247
ac2df442
AM		 10248 if (PPC_HA (offset) != 0)
10249 {
176a0d42
AM		 10250 if (r != NULL)
10251 {
794e51c0
AM		 10252 if (ALWAYS_EMIT_R2SAVE
10253 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10254 r[0].r_offset += 4;
176a0d42 10255 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10256 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10257 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10258 r[1].r_addend = r[0].r_addend;
b9e5796b 10259 if (plt_load_toc)
176a0d42 10260 {
b9e5796b 10261 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10262 {
b9e5796b
AM		 10263 r[2].r_offset = r[1].r_offset + 4;
10264 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10265 r[2].r_addend = r[0].r_addend;
10266 }
10267 else
10268 {
10269 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10270 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10271 r[2].r_addend = r[0].r_addend + 8;
10272 if (plt_static_chain)
10273 {
10274 r[3].r_offset = r[2].r_offset + 4;
10275 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10276 r[3].r_addend = r[0].r_addend + 16;
10277 }
c7131b65 10278 }
176a0d42
AM		 10279 }
10280 }
794e51c0
AM		 10281 if (ALWAYS_EMIT_R2SAVE
10282 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10283 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10284 if (plt_load_toc)
10285 {
10286 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10287 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10288 }
10289 else
10290 {
10291 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10292 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10293 }
b9e5796b
AM		 10294 if (plt_load_toc
10295 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10296 {
71a39c98 10297 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10298 offset = 0;
10299 }
71a39c98 10300 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10301 if (plt_load_toc)
794e51c0 10302 {
b9e5796b
AM		 10303 if (use_fake_dep)
10304 {
10305 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10306 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10307 }
10308 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10309 if (plt_static_chain)
10310 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10311 }
ac2df442
AM		 10312 }
10313 else
10314 {
176a0d42
AM		 10315 if (r != NULL)
10316 {
794e51c0
AM		 10317 if (ALWAYS_EMIT_R2SAVE
10318 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10319 r[0].r_offset += 4;
176a0d42 10320 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10321 if (plt_load_toc)
176a0d42 10322 {
b9e5796b 10323 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10324 {
b9e5796b
AM		 10325 r[1].r_offset = r[0].r_offset + 4;
10326 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10327 r[1].r_addend = r[0].r_addend;
10328 }
10329 else
10330 {
10331 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10332 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10333 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10334 if (plt_static_chain)
10335 {
10336 r[2].r_offset = r[1].r_offset + 4;
10337 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10338 r[2].r_addend = r[0].r_addend + 8;
10339 }
c7131b65 10340 }
176a0d42
AM		 10341 }
10342 }
794e51c0
AM		 10343 if (ALWAYS_EMIT_R2SAVE
10344 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10345 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10346 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10347 if (plt_load_toc
10348 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10349 {
10350 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10351 offset = 0;
10352 }
71a39c98 10353 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10354 if (plt_load_toc)
794e51c0 10355 {
b9e5796b
AM		 10356 if (use_fake_dep)
10357 {
10358 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10359 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10360 }
10361 if (plt_static_chain)
10362 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10363 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10364 }
ac2df442 10365 }
b9e5796b 10366 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10367 {
10368 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10369 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10370 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10371 }
10372 else
10373 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10374 return p;
10375}
10376
a7f2871e
AM		 10377/* Build a special .plt call stub for __tls_get_addr. */
10378
10379#define LD_R11_0R3 0xe9630000
10380#define LD_R12_0R3 0xe9830000
10381#define MR_R0_R3 0x7c601b78
10382#define CMPDI_R11_0 0x2c2b0000
10383#define ADD_R3_R12_R13 0x7c6c6a14
10384#define BEQLR 0x4d820020
10385#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10386#define STD_R11_0R1 0xf9610000
10387#define BCTRL 0x4e800421
10388#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10389#define MTLR_R11 0x7d6803a6
10390
10391static inline bfd_byte *
794e51c0
AM		 10392build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10393 struct ppc_stub_hash_entry *stub_entry,
10394 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10395{
e7d1c40c 10396 bfd *obfd = htab->params->stub_bfd;
794e51c0 10397
a7f2871e
AM		 10398 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10399 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10400 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10401 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10402 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10403 bfd_put_32 (obfd, BEQLR, p), p += 4;
10404 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10405 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10406 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10407
10408 if (r != NULL)
10409 r[0].r_offset += 9 * 4;
794e51c0 10410 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10411 bfd_put_32 (obfd, BCTRL, p - 4);
10412
a078d95a
AM		 10413 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10414 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
a7f2871e
AM		 10415 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10416 bfd_put_32 (obfd, BLR, p), p += 4;
10417
10418 return p;
10419}
10420
176a0d42
AM		 10421static Elf_Internal_Rela *
10422get_relocs (asection *sec, int count)
10423{
10424 Elf_Internal_Rela *relocs;
10425 struct bfd_elf_section_data *elfsec_data;
10426
10427 elfsec_data = elf_section_data (sec);
10428 relocs = elfsec_data->relocs;
10429 if (relocs == NULL)
10430 {
10431 bfd_size_type relsize;
10432 relsize = sec->reloc_count * sizeof (*relocs);
10433 relocs = bfd_alloc (sec->owner, relsize);
10434 if (relocs == NULL)
10435 return NULL;
10436 elfsec_data->relocs = relocs;
d4730f92
BS		 10437 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10438 sizeof (Elf_Internal_Shdr));
10439 if (elfsec_data->rela.hdr == NULL)
10440 return NULL;
10441 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10442 * sizeof (Elf64_External_Rela));
10443 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10444 sec->reloc_count = 0;
10445 }
10446 relocs += sec->reloc_count;
10447 sec->reloc_count += count;
10448 return relocs;
10449}
10450
aa374f67 10451static bfd_vma
25f53a85 10452get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10453 struct ppc_stub_hash_entry *stub_entry)
10454{
25f53a85 10455 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM		 10456 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10457
10458 if (r2off == 0)
10459 {
10460 /* Support linking -R objects. Get the toc pointer from the
10461 opd entry. */
10462 char buf[8];
b9e5796b
AM		 10463 if (!htab->opd_abi)
10464 return r2off;
aa374f67
AM		 10465 asection *opd = stub_entry->h->elf.root.u.def.section;
10466 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10467
10468 if (strcmp (opd->name, ".opd") != 0
10469 || opd->reloc_count != 0)
10470 {
bc30df16 10471 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10472 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10473 bfd_set_error (bfd_error_bad_value);
10474 return 0;
10475 }
10476 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10477 return 0;
10478 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10479 r2off -= elf_gp (info->output_bfd);
aa374f67
AM		 10480 }
10481 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10482 return r2off;
10483}
10484
b34976b6 10485static bfd_boolean
4ce794b7 10486ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10487{
721956f4
AM		 10488 struct ppc_stub_hash_entry *stub_entry;
10489 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10490 struct bfd_link_info *info;
10491 struct ppc_link_hash_table *htab;
721956f4
AM		 10492 bfd_byte *loc;
10493 bfd_byte *p;
ee75fd95 10494 bfd_vma dest, off;
721956f4 10495 int size;
176a0d42 10496 Elf_Internal_Rela *r;
e054468f 10497 asection *plt;
5d1634d7 10498
721956f4
AM		 10499 /* Massage our args to the form they really have. */
10500 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10501 info = in_arg;
5d1634d7 10502
5d1634d7 10503 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10504 if (htab == NULL)
10505 return FALSE;
5d1634d7 10506
721956f4 10507 /* Make a note of the offset within the stubs for this entry. */
eea6121a 10508 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 10509 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 10510
4ce794b7 10511 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10512 switch (stub_entry->stub_type)
5d1634d7 10513 {
721956f4 10514 case ppc_stub_long_branch:
ad8e1ba5 10515 case ppc_stub_long_branch_r2off:
721956f4 10516 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10517 dest = (stub_entry->target_value
10518 + stub_entry->target_section->output_offset
10519 + stub_entry->target_section->output_section->vma);
10520 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10521 off = dest;
5d1634d7 10522
721956f4
AM		 10523 /* And this is where we are coming from. */
10524 off -= (stub_entry->stub_offset
97b639ba
AM		 10525 + stub_entry->stub_sec->output_offset
10526 + stub_entry->stub_sec->output_section->vma);
e86ce104 10527
ac2df442
AM		 10528 size = 4;
10529 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10530 {
25f53a85 10531 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10532
aa374f67
AM		 10533 if (r2off == 0)
10534 {
10535 htab->stub_error = TRUE;
10536 return FALSE;
10537 }
e7d1c40c 10538 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10539 loc += 4;
ac2df442
AM		 10540 size = 12;
10541 if (PPC_HA (r2off) != 0)
10542 {
10543 size = 16;
e7d1c40c
AM		 10544 bfd_put_32 (htab->params->stub_bfd,
10545 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10546 loc += 4;
10547 }
e7d1c40c 10548 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10549 loc += 4;
ac2df442 10550 off -= size - 4;
ad8e1ba5 10551 }
e7d1c40c 10552 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10553
5c3dead3
AM		 10554 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10555 {
bc30df16
AM		 10556 info->callbacks->einfo
10557 (_("%P: long branch stub `%s' offset overflow\n"),
10558 stub_entry->root.string);
5c3dead3
AM		 10559 htab->stub_error = TRUE;
10560 return FALSE;
10561 }
ee75fd95
AM		 10562
10563 if (info->emitrelocations)
10564 {
176a0d42
AM		 10565 r = get_relocs (stub_entry->stub_sec, 1);
10566 if (r == NULL)
10567 return FALSE;
ee75fd95
AM		 10568 r->r_offset = loc - stub_entry->stub_sec->contents;
10569 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10570 r->r_addend = dest;
10571 if (stub_entry->h != NULL)
10572 {
10573 struct elf_link_hash_entry **hashes;
10574 unsigned long symndx;
10575 struct ppc_link_hash_entry *h;
10576
e7d1c40c 10577 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10578 if (hashes == NULL)
10579 {
10580 bfd_size_type hsize;
10581
10582 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10583 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10584 if (hashes == NULL)
10585 return FALSE;
e7d1c40c 10586 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10587 htab->stub_globals = 1;
10588 }
10589 symndx = htab->stub_globals++;
10590 h = stub_entry->h;
10591 hashes[symndx] = &h->elf;
10592 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10593 if (h->oh != NULL && h->oh->is_func)
b31867b6 10594 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10595 if (h->elf.root.u.def.section != stub_entry->target_section)
10596 /* H is an opd symbol. The addend must be zero. */
10597 r->r_addend = 0;
10598 else
10599 {
10600 off = (h->elf.root.u.def.value
10601 + h->elf.root.u.def.section->output_offset
10602 + h->elf.root.u.def.section->output_section->vma);
10603 r->r_addend -= off;
10604 }
10605 }
10606 }
721956f4 10607 break;
e86ce104 10608
721956f4 10609 case ppc_stub_plt_branch:
ad8e1ba5 10610 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10611 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10612 stub_entry->root.string + 9,
b34976b6 10613 FALSE, FALSE);
721956f4
AM		 10614 if (br_entry == NULL)
10615 {
8de848d8 10616 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10617 stub_entry->root.string);
b34976b6
AM		 10618 htab->stub_error = TRUE;
10619 return FALSE;
721956f4
AM		 10620 }
10621
176a0d42
AM		 10622 dest = (stub_entry->target_value
10623 + stub_entry->target_section->output_offset
10624 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10625 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10626 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10627
176a0d42 10628 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10629 htab->brlt->contents + br_entry->offset);
721956f4 10630
f94498ff 10631 if (br_entry->iter == htab->stub_iteration)
721956f4 10632 {
f94498ff 10633 br_entry->iter = 0;
84f5d08e 10634
f94498ff 10635 if (htab->relbrlt != NULL)
84f5d08e 10636 {
f94498ff
AM		 10637 /* Create a reloc for the branch lookup table entry. */
10638 Elf_Internal_Rela rela;
10639 bfd_byte *rl;
10640
10641 rela.r_offset = (br_entry->offset
10642 + htab->brlt->output_offset
10643 + htab->brlt->output_section->vma);
10644 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10645 rela.r_addend = dest;
f94498ff
AM		 10646
10647 rl = htab->relbrlt->contents;
10648 rl += (htab->relbrlt->reloc_count++
10649 * sizeof (Elf64_External_Rela));
10650 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10651 }
10652 else if (info->emitrelocations)
10653 {
176a0d42
AM		 10654 r = get_relocs (htab->brlt, 1);
10655 if (r == NULL)
10656 return FALSE;
10657 /* brlt, being SEC_LINKER_CREATED does not go through the
10658 normal reloc processing. Symbols and offsets are not
10659 translated from input file to output file form, so
10660 set up the offset per the output file. */
f94498ff
AM		 10661 r->r_offset = (br_entry->offset
10662 + htab->brlt->output_offset
10663 + htab->brlt->output_section->vma);
10664 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10665 r->r_addend = dest;
84f5d08e 10666 }
84f5d08e 10667 }
721956f4 10668
176a0d42
AM		 10669 dest = (br_entry->offset
10670 + htab->brlt->output_offset
10671 + htab->brlt->output_section->vma);
10672
10673 off = (dest
4ce794b7 10674 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10675 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10676
ad8e1ba5 10677 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10678 {
25f53a85 10679 info->callbacks->einfo
bc30df16 10680 (_("%P: linkage table error against `%T'\n"),
721956f4 10681 stub_entry->root.string);
5d1634d7 10682 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10683 htab->stub_error = TRUE;
10684 return FALSE;
5d1634d7 10685 }
41bd81ab 10686
176a0d42
AM		 10687 if (info->emitrelocations)
10688 {
10689 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10690 if (r == NULL)
10691 return FALSE;
10692 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10693 if (bfd_big_endian (info->output_bfd))
10694 r[0].r_offset += 2;
00f412ee 10695 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10696 r[0].r_offset += 4;
10697 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10698 r[0].r_addend = dest;
10699 if (PPC_HA (off) != 0)
10700 {
10701 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10702 r[1].r_offset = r[0].r_offset + 4;
10703 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10704 r[1].r_addend = r[0].r_addend;
10705 }
10706 }
10707
00f412ee 10708 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10709 {
176a0d42 10710 if (PPC_HA (off) != 0)
ac2df442
AM		 10711 {
10712 size = 16;
e7d1c40c 10713 bfd_put_32 (htab->params->stub_bfd,
397998fc 10714 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10715 loc += 4;
e7d1c40c 10716 bfd_put_32 (htab->params->stub_bfd,
397998fc 10717 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10718 }
10719 else
10720 {
10721 size = 12;
e7d1c40c
AM		 10722 bfd_put_32 (htab->params->stub_bfd,
10723 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10724 }
ad8e1ba5
AM		 10725 }
10726 else
10727 {
25f53a85 10728 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10729
00f412ee 10730 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10731 {
10732 htab->stub_error = TRUE;
10733 return FALSE;
10734 }
ad8e1ba5 10735
e7d1c40c 10736 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10737 loc += 4;
00f412ee 10738 size = 16;
176a0d42 10739 if (PPC_HA (off) != 0)
ac2df442
AM		 10740 {
10741 size += 4;
e7d1c40c 10742 bfd_put_32 (htab->params->stub_bfd,
397998fc 10743 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10744 loc += 4;
e7d1c40c 10745 bfd_put_32 (htab->params->stub_bfd,
397998fc 10746 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10747 }
10748 else
e7d1c40c 10749 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10750
10751 if (PPC_HA (r2off) != 0)
10752 {
10753 size += 4;
00f412ee 10754 loc += 4;
e7d1c40c
AM		 10755 bfd_put_32 (htab->params->stub_bfd,
10756 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10757 }
10758 if (PPC_LO (r2off) != 0)
10759 {
10760 size += 4;
ac2df442 10761 loc += 4;
e7d1c40c
AM		 10762 bfd_put_32 (htab->params->stub_bfd,
10763 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10764 }
ad8e1ba5
AM		 10765 }
10766 loc += 4;
e7d1c40c 10767 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10768 loc += 4;
e7d1c40c 10769 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10770 break;
5d1634d7 10771
721956f4 10772 case ppc_stub_plt_call:
794e51c0 10773 case ppc_stub_plt_call_r2save:
e054468f 10774 if (stub_entry->h != NULL
b31867b6
AM		 10775 && stub_entry->h->is_func_descriptor
10776 && stub_entry->h->oh != NULL)
c862ae31 10777 {
b31867b6
AM		 10778 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10779
10780 /* If the old-ABI "dot-symbol" is undefined make it weak so
10781 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10782 FIXME: We used to define the symbol on one of the call
10783 stubs instead, which is why we test symbol section id
10784 against htab->top_id in various places. Likely all
10785 these checks could now disappear. */
10786 if (fh->elf.root.type == bfd_link_hash_undefined)
10787 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10788 /* Stop undo_symbol_twiddle changing it back to undefined. */
10789 fh->was_undefined = 0;
c862ae31
AM		 10790 }
10791
721956f4 10792 /* Now build the stub. */
e054468f 10793 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10794 if (dest >= (bfd_vma) -2)
721956f4
AM		 10795 abort ();
10796
33e44f2e 10797 plt = htab->elf.splt;
25f23106
AM		 10798 if (!htab->elf.dynamic_sections_created
10799 || stub_entry->h == NULL
10800 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10801 plt = htab->elf.iplt;
e054468f
AM		 10802
10803 dest += plt->output_offset + plt->output_section->vma;
10804
10805 if (stub_entry->h == NULL
10806 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10807 {
10808 Elf_Internal_Rela rela;
10809 bfd_byte *rl;
10810
10811 rela.r_offset = dest;
ee67d69a
AM		 10812 if (htab->opd_abi)
10813 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10814 else
10815 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10816 rela.r_addend = (stub_entry->target_value
10817 + stub_entry->target_section->output_offset
10818 + stub_entry->target_section->output_section->vma);
10819
33e44f2e
AM		 10820 rl = (htab->elf.irelplt->contents
10821 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10822 * sizeof (Elf64_External_Rela)));
10823 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10824 stub_entry->plt_ent->plt.offset |= 1;
10825 }
176a0d42
AM		 10826
10827 off = (dest
e054468f 10828 - elf_gp (plt->output_section->owner)
176a0d42 10829 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10830
ad8e1ba5 10831 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10832 {
25f53a85 10833 info->callbacks->einfo
bc30df16 10834 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10835 stub_entry->h != NULL
10836 ? stub_entry->h->elf.root.root.string
10837 : "<local sym>");
721956f4 10838 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10839 htab->stub_error = TRUE;
10840 return FALSE;
721956f4
AM		 10841 }
10842
e7d1c40c 10843 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10844 {
10845 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10846
10847 stub_entry->stub_sec->size += pad;
10848 stub_entry->stub_offset = stub_entry->stub_sec->size;
10849 loc += pad;
10850 }
10851
176a0d42
AM		 10852 r = NULL;
10853 if (info->emitrelocations)
10854 {
10855 r = get_relocs (stub_entry->stub_sec,
3ba720c7
AM		 10856 ((PPC_HA (off) != 0)
10857 + (htab->opd_abi
e7d1c40c 10858 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10859 && PPC_HA (off + 16) == PPC_HA (off))
10860 : 1)));
176a0d42
AM		 10861 if (r == NULL)
10862 return FALSE;
10863 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10864 if (bfd_big_endian (info->output_bfd))
10865 r[0].r_offset += 2;
176a0d42
AM		 10866 r[0].r_addend = dest;
10867 }
a7f2871e
AM		 10868 if (stub_entry->h != NULL
10869 && (stub_entry->h == htab->tls_get_addr_fd
10870 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10871 && !htab->params->no_tls_get_addr_opt)
794e51c0 10872 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10873 else
794e51c0 10874 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10875 size = p - loc;
10876 break;
10877
10878 default:
10879 BFD_FAIL ();
b34976b6 10880 return FALSE;
721956f4
AM		 10881 }
10882
eea6121a 10883 stub_entry->stub_sec->size += size;
97b639ba 10884
e7d1c40c 10885 if (htab->params->emit_stub_syms)
97b639ba
AM		 10886 {
10887 struct elf_link_hash_entry *h;
ee75fd95
AM		 10888 size_t len1, len2;
10889 char *name;
10890 const char *const stub_str[] = { "long_branch",
10891 "long_branch_r2off",
10892 "plt_branch",
10893 "plt_branch_r2off",
794e51c0 10894 "plt_call",
ee75fd95
AM		 10895 "plt_call" };
10896
10897 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10898 len2 = strlen (stub_entry->root.string);
10899 name = bfd_malloc (len1 + len2 + 2);
10900 if (name == NULL)
10901 return FALSE;
10902 memcpy (name, stub_entry->root.string, 9);
10903 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10904 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10905 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10906 if (h == NULL)
10907 return FALSE;
10908 if (h->root.type == bfd_link_hash_new)
10909 {
10910 h->root.type = bfd_link_hash_defined;
10911 h->root.u.def.section = stub_entry->stub_sec;
10912 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10913 h->ref_regular = 1;
10914 h->def_regular = 1;
10915 h->ref_regular_nonweak = 1;
10916 h->forced_local = 1;
10917 h->non_elf = 0;
97b639ba
AM		 10918 }
10919 }
10920
b34976b6 10921 return TRUE;
721956f4
AM		 10922}
10923
10924/* As above, but don't actually build the stub. Just bump offset so
10925 we know stub section sizes, and select plt_branch stubs where
10926 long_branch stubs won't do. */
10927
b34976b6 10928static bfd_boolean
4ce794b7 10929ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10930{
10931 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10932 struct bfd_link_info *info;
721956f4
AM		 10933 struct ppc_link_hash_table *htab;
10934 bfd_vma off;
10935 int size;
10936
10937 /* Massage our args to the form they really have. */
10938 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 10939 info = in_arg;
10940
10941 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10942 if (htab == NULL)
10943 return FALSE;
721956f4 10944
794e51c0
AM		 10945 if (stub_entry->stub_type == ppc_stub_plt_call
10946 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10947 {
e054468f
AM		 10948 asection *plt;
10949 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10950 if (off >= (bfd_vma) -2)
411e1bfb 10951 abort ();
33e44f2e 10952 plt = htab->elf.splt;
25f23106
AM		 10953 if (!htab->elf.dynamic_sections_created
10954 || stub_entry->h == NULL
10955 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10956 plt = htab->elf.iplt;
e054468f
AM		 10957 off += (plt->output_offset
10958 + plt->output_section->vma
10959 - elf_gp (plt->output_section->owner)
ad8e1ba5 10960 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10961
794e51c0 10962 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 10963 if (htab->params->plt_stub_align)
794e51c0 10964 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 10965 if (info->emitrelocations)
10966 {
10967 stub_entry->stub_sec->reloc_count
b9e5796b
AM		 10968 += ((PPC_HA (off) != 0)
10969 + (htab->opd_abi
e7d1c40c 10970 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 10971 && PPC_HA (off + 16) == PPC_HA (off))
10972 : 1));
176a0d42
AM		 10973 stub_entry->stub_sec->flags |= SEC_RELOC;
10974 }
721956f4
AM		 10975 }
10976 else
10977 {
ad8e1ba5
AM		 10978 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10979 variants. */
ac2df442 10980 bfd_vma r2off = 0;
6911b7dc 10981 bfd_vma local_off = 0;
ac2df442 10982
721956f4
AM		 10983 off = (stub_entry->target_value
10984 + stub_entry->target_section->output_offset
10985 + stub_entry->target_section->output_section->vma);
eea6121a 10986 off -= (stub_entry->stub_sec->size
721956f4
AM		 10987 + stub_entry->stub_sec->output_offset
10988 + stub_entry->stub_sec->output_section->vma);
10989
ad8e1ba5
AM		 10990 /* Reset the stub type from the plt variant in case we now
10991 can reach with a shorter stub. */
10992 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10993 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10994
10995 size = 4;
10996 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10997 {
25f53a85 10998 r2off = get_r2off (info, stub_entry);
b9e5796b 10999 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 11000 {
11001 htab->stub_error = TRUE;
11002 return FALSE;
11003 }
ac2df442
AM		 11004 size = 12;
11005 if (PPC_HA (r2off) != 0)
11006 size = 16;
11007 off -= size - 4;
ad8e1ba5
AM		 11008 }
11009
6911b7dc
AM		 11010 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11011
b9e5796b
AM		 11012 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11013 Do the same for -R objects without function descriptors. */
11014 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11015 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11016 && r2off == 0))
721956f4
AM		 11017 {
11018 struct ppc_branch_hash_entry *br_entry;
11019
11020 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11021 stub_entry->root.string + 9,
b34976b6 11022 TRUE, FALSE);
721956f4
AM		 11023 if (br_entry == NULL)
11024 {
8de848d8 11025 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11026 stub_entry->root.string);
b34976b6
AM		 11027 htab->stub_error = TRUE;
11028 return FALSE;
721956f4
AM		 11029 }
11030
11031 if (br_entry->iter != htab->stub_iteration)
11032 {
11033 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11034 br_entry->offset = htab->brlt->size;
11035 htab->brlt->size += 8;
63bc6f6c 11036
ee75fd95 11037 if (htab->relbrlt != NULL)
eea6121a 11038 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11039 else if (info->emitrelocations)
11040 {
11041 htab->brlt->reloc_count += 1;
11042 htab->brlt->flags |= SEC_RELOC;
11043 }
721956f4 11044 }
ad8e1ba5
AM		 11045
11046 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11047 off = (br_entry->offset
11048 + htab->brlt->output_offset
11049 + htab->brlt->output_section->vma
11050 - elf_gp (htab->brlt->output_section->owner)
11051 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11052
176a0d42
AM		 11053 if (info->emitrelocations)
11054 {
11055 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11056 stub_entry->stub_sec->flags |= SEC_RELOC;
11057 }
11058
00f412ee 11059 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11060 {
11061 size = 12;
176a0d42 11062 if (PPC_HA (off) != 0)
ac2df442
AM		 11063 size = 16;
11064 }
11065 else
11066 {
00f412ee 11067 size = 16;
176a0d42 11068 if (PPC_HA (off) != 0)
ac2df442
AM		 11069 size += 4;
11070
11071 if (PPC_HA (r2off) != 0)
11072 size += 4;
00f412ee
AM		 11073 if (PPC_LO (r2off) != 0)
11074 size += 4;
ac2df442 11075 }
721956f4 11076 }
84f5d08e
AM		 11077 else if (info->emitrelocations)
11078 {
11079 stub_entry->stub_sec->reloc_count += 1;
11080 stub_entry->stub_sec->flags |= SEC_RELOC;
11081 }
721956f4
AM		 11082 }
11083
eea6121a 11084 stub_entry->stub_sec->size += size;
b34976b6 11085 return TRUE;
721956f4
AM		 11086}
11087
11088/* Set up various things so that we can make a list of input sections
11089 for each output section included in the link. Returns -1 on error,
cedb70c5 11090 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11091
11092int
e7d1c40c 11093ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4
AM		 11094{
11095 bfd *input_bfd;
734b6cf9 11096 int top_id, top_index, id;
721956f4 11097 asection *section;
734b6cf9 11098 asection **input_list;
721956f4
AM		 11099 bfd_size_type amt;
11100 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11101
4dfe6ac6
NC		 11102 if (htab == NULL)
11103 return -1;
4c52953f 11104
1e2f5b6e 11105 /* Find the top input section id. */
3d6f9012 11106 for (input_bfd = info->input_bfds, top_id = 3;
721956f4 11107 input_bfd != NULL;
c72f2fb2 11108 input_bfd = input_bfd->link.next)
721956f4 11109 {
721956f4
AM		 11110 for (section = input_bfd->sections;
11111 section != NULL;
11112 section = section->next)
11113 {
11114 if (top_id < section->id)
11115 top_id = section->id;
11116 }
11117 }
721956f4 11118
8f3bab57 11119 htab->top_id = top_id;
721956f4 11120 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 11121 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 11122 if (htab->stub_group == NULL)
11123 return -1;
11124
3d6f9012
AM		 11125 /* Set toc_off for com, und, abs and ind sections. */
11126 for (id = 0; id < 3; id++)
11127 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 11128
734b6cf9
AM		 11129 /* We can't use output_bfd->section_count here to find the top output
11130 section index as some sections may have been removed, and
8423293d 11131 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 11132 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM		 11133 section != NULL;
11134 section = section->next)
11135 {
11136 if (top_index < section->index)
11137 top_index = section->index;
11138 }
11139
11140 htab->top_index = top_index;
11141 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 11142 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 11143 htab->input_list = input_list;
11144 if (input_list == NULL)
11145 return -1;
11146
721956f4
AM		 11147 return 1;
11148}
11149
927be08e
AM		 11150/* Set up for first pass at multitoc partitioning. */
11151
11152void
11153ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11154{
11155 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11156
1c865ab2 11157 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11158 htab->toc_bfd = NULL;
11159 htab->toc_first_sec = NULL;
11160}
11161
e717da7e
AM		 11162/* The linker repeatedly calls this function for each TOC input section
11163 and linker generated GOT section. Group input bfds such that the toc
927be08e 11164 within a group is less than 64k in size. */
ad8e1ba5 11165
927be08e 11166bfd_boolean
4ce794b7 11167ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11168{
11169 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11170 bfd_vma addr, off, limit;
ad8e1ba5 11171
4dfe6ac6
NC		 11172 if (htab == NULL)
11173 return FALSE;
11174
927be08e 11175 if (!htab->second_toc_pass)
4c52953f 11176 {
927be08e 11177 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11178 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11179
11180 if (new_bfd)
bf102f86
AM		 11181 {
11182 htab->toc_bfd = isec->owner;
11183 htab->toc_first_sec = isec;
11184 }
927be08e 11185
bf102f86
AM		 11186 addr = isec->output_offset + isec->output_section->vma;
11187 off = addr - htab->toc_curr;
d77c8a4b
AM		 11188 limit = 0x80008000;
11189 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11190 limit = 0x10000;
11191 if (off + isec->size > limit)
bf102f86
AM		 11192 {
11193 addr = (htab->toc_first_sec->output_offset
11194 + htab->toc_first_sec->output_section->vma);
11195 htab->toc_curr = addr;
11196 }
99877b66 11197
927be08e
AM		 11198 /* toc_curr is the base address of this toc group. Set elf_gp
11199 for the input section to be the offset relative to the
11200 output toc base plus 0x8000. Making the input elf_gp an
11201 offset allows us to move the toc as a whole without
11202 recalculating input elf_gp. */
11203 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11204 off += TOC_BASE_OFF;
11205
11206 /* Die if someone uses a linker script that doesn't keep input
11207 file .toc and .got together. */
a4fd3de5
AM		 11208 if (new_bfd
11209 && elf_gp (isec->owner) != 0
927be08e
AM		 11210 && elf_gp (isec->owner) != off)
11211 return FALSE;
11212
11213 elf_gp (isec->owner) = off;
11214 return TRUE;
4c52953f 11215 }
927be08e
AM		 11216
11217 /* During the second pass toc_first_sec points to the start of
11218 a toc group, and toc_curr is used to track the old elf_gp.
11219 We use toc_bfd to ensure we only look at each bfd once. */
11220 if (htab->toc_bfd == isec->owner)
11221 return TRUE;
11222 htab->toc_bfd = isec->owner;
11223
11224 if (htab->toc_first_sec == NULL
11225 || htab->toc_curr != elf_gp (isec->owner))
11226 {
11227 htab->toc_curr = elf_gp (isec->owner);
11228 htab->toc_first_sec = isec;
11229 }
11230 addr = (htab->toc_first_sec->output_offset
11231 + htab->toc_first_sec->output_section->vma);
11232 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11233 elf_gp (isec->owner) = off;
11234
11235 return TRUE;
ad8e1ba5
AM		 11236}
11237
927be08e
AM		 11238/* Called via elf_link_hash_traverse to merge GOT entries for global
11239 symbol H. */
11240
11241static bfd_boolean
11242merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11243{
11244 if (h->root.type == bfd_link_hash_indirect)
11245 return TRUE;
11246
927be08e
AM		 11247 merge_got_entries (&h->got.glist);
11248
11249 return TRUE;
11250}
11251
11252/* Called via elf_link_hash_traverse to allocate GOT entries for global
11253 symbol H. */
11254
11255static bfd_boolean
11256reallocate_got (struct elf_link_hash_entry *h, void *inf)
11257{
11258 struct got_entry *gent;
11259
11260 if (h->root.type == bfd_link_hash_indirect)
11261 return TRUE;
11262
927be08e
AM		 11263 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11264 if (!gent->is_indirect)
11265 allocate_got (h, (struct bfd_link_info *) inf, gent);
11266 return TRUE;
11267}
11268
11269/* Called on the first multitoc pass after the last call to
11270 ppc64_elf_next_toc_section. This function removes duplicate GOT
11271 entries. */
11272
11273bfd_boolean
11274ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11275{
11276 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11277 struct bfd *ibfd, *ibfd2;
11278 bfd_boolean done_something;
11279
11280 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11281
7865406b
AM		 11282 if (!htab->do_multi_toc)
11283 return FALSE;
11284
d0fae19d 11285 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11286 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11287
11288 /* And tlsld_got. */
c72f2fb2 11289 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11290 {
11291 struct got_entry *ent, *ent2;
11292
11293 if (!is_ppc64_elf (ibfd))
11294 continue;
11295
11296 ent = ppc64_tlsld_got (ibfd);
11297 if (!ent->is_indirect
11298 && ent->got.offset != (bfd_vma) -1)
11299 {
c72f2fb2 11300 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11301 {
11302 if (!is_ppc64_elf (ibfd2))
11303 continue;
11304
11305 ent2 = ppc64_tlsld_got (ibfd2);
11306 if (!ent2->is_indirect
11307 && ent2->got.offset != (bfd_vma) -1
11308 && elf_gp (ibfd2) == elf_gp (ibfd))
11309 {
11310 ent2->is_indirect = TRUE;
11311 ent2->got.ent = ent;
11312 }
11313 }
11314 }
11315 }
11316
11317 /* Zap sizes of got sections. */
33e44f2e
AM		 11318 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11319 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11320 htab->got_reli_size = 0;
11321
c72f2fb2 11322 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11323 {
11324 asection *got, *relgot;
11325
11326 if (!is_ppc64_elf (ibfd))
11327 continue;
11328
11329 got = ppc64_elf_tdata (ibfd)->got;
11330 if (got != NULL)
11331 {
11332 got->rawsize = got->size;
11333 got->size = 0;
11334 relgot = ppc64_elf_tdata (ibfd)->relgot;
11335 relgot->rawsize = relgot->size;
11336 relgot->size = 0;
11337 }
11338 }
11339
11340 /* Now reallocate the got, local syms first. We don't need to
11341 allocate section contents again since we never increase size. */
c72f2fb2 11342 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11343 {
11344 struct got_entry **lgot_ents;
11345 struct got_entry **end_lgot_ents;
11346 struct plt_entry **local_plt;
11347 struct plt_entry **end_local_plt;
f961d9dd 11348 unsigned char *lgot_masks;
927be08e
AM		 11349 bfd_size_type locsymcount;
11350 Elf_Internal_Shdr *symtab_hdr;
19e08130 11351 asection *s;
927be08e
AM		 11352
11353 if (!is_ppc64_elf (ibfd))
11354 continue;
11355
11356 lgot_ents = elf_local_got_ents (ibfd);
11357 if (!lgot_ents)
11358 continue;
11359
11360 symtab_hdr = &elf_symtab_hdr (ibfd);
11361 locsymcount = symtab_hdr->sh_info;
11362 end_lgot_ents = lgot_ents + locsymcount;
11363 local_plt = (struct plt_entry **) end_lgot_ents;
11364 end_local_plt = local_plt + locsymcount;
f961d9dd 11365 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11366 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11367 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11368 {
11369 struct got_entry *ent;
11370
11371 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11372 {
19e08130
AM		 11373 unsigned int ent_size = 8;
11374 unsigned int rel_size = sizeof (Elf64_External_Rela);
11375
d0fae19d
AM		 11376 ent->got.offset = s->size;
11377 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11378 {
19e08130
AM		 11379 ent_size *= 2;
11380 rel_size *= 2;
11381 }
11382 s->size += ent_size;
11383 if ((*lgot_masks & PLT_IFUNC) != 0)
11384 {
33e44f2e 11385 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11386 htab->got_reli_size += rel_size;
11387 }
11388 else if (info->shared)
11389 {
11390 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11391 srel->size += rel_size;
d0fae19d
AM		 11392 }
11393 }
927be08e
AM		 11394 }
11395 }
11396
11397 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11398
c72f2fb2 11399 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11400 {
11401 struct got_entry *ent;
11402
11403 if (!is_ppc64_elf (ibfd))
11404 continue;
11405
11406 ent = ppc64_tlsld_got (ibfd);
11407 if (!ent->is_indirect
11408 && ent->got.offset != (bfd_vma) -1)
11409 {
11410 asection *s = ppc64_elf_tdata (ibfd)->got;
11411 ent->got.offset = s->size;
11412 s->size += 16;
11413 if (info->shared)
11414 {
11415 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11416 srel->size += sizeof (Elf64_External_Rela);
11417 }
11418 }
11419 }
11420
33e44f2e 11421 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11422 if (!done_something)
c72f2fb2 11423 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11424 {
11425 asection *got;
11426
11427 if (!is_ppc64_elf (ibfd))
11428 continue;
11429
11430 got = ppc64_elf_tdata (ibfd)->got;
11431 if (got != NULL)
11432 {
11433 done_something = got->rawsize != got->size;
11434 if (done_something)
11435 break;
11436 }
11437 }
11438
11439 if (done_something)
e7d1c40c 11440 (*htab->params->layout_sections_again) ();
927be08e
AM		 11441
11442 /* Set up for second pass over toc sections to recalculate elf_gp
11443 on input sections. */
11444 htab->toc_bfd = NULL;
11445 htab->toc_first_sec = NULL;
11446 htab->second_toc_pass = TRUE;
11447 return done_something;
11448}
11449
11450/* Called after second pass of multitoc partitioning. */
11451
11452void
11453ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11454{
11455 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11456
11457 /* After the second pass, toc_curr tracks the TOC offset used
11458 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11459 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11460}
11461
9b5ecbd0
AM		 11462/* No toc references were found in ISEC. If the code in ISEC makes no
11463 calls, then there's no need to use toc adjusting stubs when branching
11464 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11465 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11466 needed, and 2 if a cyclical call-graph was found but no other reason
11467 for a stub was detected. If called from the top level, a return of
11468 2 means the same as a return of 0. */
9b5ecbd0
AM		 11469
11470static int
4ce794b7 11471toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11472{
9b5ecbd0 11473 int ret;
70cc837d
AM		 11474
11475 /* Mark this section as checked. */
11476 isec->call_check_done = 1;
9b5ecbd0 11477
772119ce
AM		 11478 /* We know none of our code bearing sections will need toc stubs. */
11479 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11480 return 0;
11481
eea6121a 11482 if (isec->size == 0)
082c50f8
AM		 11483 return 0;
11484
4c52953f
AM		 11485 if (isec->output_section == NULL)
11486 return 0;
11487
4c52953f 11488 ret = 0;
70cc837d 11489 if (isec->reloc_count != 0)
9b5ecbd0 11490 {
70cc837d
AM		 11491 Elf_Internal_Rela *relstart, *rel;
11492 Elf_Internal_Sym *local_syms;
11493 struct ppc_link_hash_table *htab;
2917689a 11494
70cc837d
AM		 11495 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11496 info->keep_memory);
11497 if (relstart == NULL)
11498 return -1;
90aecf7a 11499
70cc837d
AM		 11500 /* Look for branches to outside of this section. */
11501 local_syms = NULL;
11502 htab = ppc_hash_table (info);
11503 if (htab == NULL)
11504 return -1;
4c52953f 11505
70cc837d 11506 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11507 {
70cc837d
AM		 11508 enum elf_ppc64_reloc_type r_type;
11509 unsigned long r_symndx;
11510 struct elf_link_hash_entry *h;
11511 struct ppc_link_hash_entry *eh;
11512 Elf_Internal_Sym *sym;
11513 asection *sym_sec;
11514 struct _opd_sec_data *opd;
11515 bfd_vma sym_value;
11516 bfd_vma dest;
11517
11518 r_type = ELF64_R_TYPE (rel->r_info);
11519 if (r_type != R_PPC64_REL24
11520 && r_type != R_PPC64_REL14
11521 && r_type != R_PPC64_REL14_BRTAKEN
11522 && r_type != R_PPC64_REL14_BRNTAKEN)
11523 continue;
4c52953f 11524
70cc837d
AM		 11525 r_symndx = ELF64_R_SYM (rel->r_info);
11526 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11527 isec->owner))
4c52953f 11528 {
70cc837d
AM		 11529 ret = -1;
11530 break;
11531 }
4c52953f 11532
70cc837d
AM		 11533 /* Calls to dynamic lib functions go through a plt call stub
11534 that uses r2. */
11535 eh = (struct ppc_link_hash_entry *) h;
11536 if (eh != NULL
11537 && (eh->elf.plt.plist != NULL
11538 || (eh->oh != NULL
11539 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11540 {
11541 ret = 1;
11542 break;
4c52953f
AM		 11543 }
11544
70cc837d
AM		 11545 if (sym_sec == NULL)
11546 /* Ignore other undefined symbols. */
4c52953f 11547 continue;
4c52953f 11548
70cc837d
AM		 11549 /* Assume branches to other sections not included in the
11550 link need stubs too, to cover -R and absolute syms. */
11551 if (sym_sec->output_section == NULL)
11552 {
11553 ret = 1;
11554 break;
11555 }
4c52953f 11556
70cc837d
AM		 11557 if (h == NULL)
11558 sym_value = sym->st_value;
11559 else
11560 {
11561 if (h->root.type != bfd_link_hash_defined
11562 && h->root.type != bfd_link_hash_defweak)
11563 abort ();
11564 sym_value = h->root.u.def.value;
11565 }
11566 sym_value += rel->r_addend;
4c52953f 11567
70cc837d
AM		 11568 /* If this branch reloc uses an opd sym, find the code section. */
11569 opd = get_opd_info (sym_sec);
11570 if (opd != NULL)
11571 {
11572 if (h == NULL && opd->adjust != NULL)
11573 {
11574 long adjust;
4c52953f 11575
70cc837d
AM		 11576 adjust = opd->adjust[sym->st_value / 8];
11577 if (adjust == -1)
11578 /* Assume deleted functions won't ever be called. */
11579 continue;
11580 sym_value += adjust;
11581 }
4c52953f 11582
aef36ac1
AM		 11583 dest = opd_entry_value (sym_sec, sym_value,
11584 &sym_sec, NULL, FALSE);
70cc837d
AM		 11585 if (dest == (bfd_vma) -1)
11586 continue;
11587 }
11588 else
11589 dest = (sym_value
11590 + sym_sec->output_offset
11591 + sym_sec->output_section->vma);
4c52953f 11592
70cc837d
AM		 11593 /* Ignore branch to self. */
11594 if (sym_sec == isec)
11595 continue;
4c52953f 11596
70cc837d
AM		 11597 /* If the called function uses the toc, we need a stub. */
11598 if (sym_sec->has_toc_reloc
11599 || sym_sec->makes_toc_func_call)
4c52953f 11600 {
70cc837d 11601 ret = 1;
4c52953f
AM		 11602 break;
11603 }
70cc837d
AM		 11604
11605 /* Assume any branch that needs a long branch stub might in fact
11606 need a plt_branch stub. A plt_branch stub uses r2. */
11607 else if (dest - (isec->output_offset
11608 + isec->output_section->vma
6911b7dc
AM		 11609 + rel->r_offset) + (1 << 25)
11610 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11611 ? h->other
11612 : sym->st_other))
4c52953f 11613 {
70cc837d
AM		 11614 ret = 1;
11615 break;
11616 }
11617
11618 /* If calling back to a section in the process of being
11619 tested, we can't say for sure that no toc adjusting stubs
11620 are needed, so don't return zero. */
11621 else if (sym_sec->call_check_in_progress)
11622 ret = 2;
11623
11624 /* Branches to another section that itself doesn't have any TOC
11625 references are OK. Recursively call ourselves to check. */
11626 else if (!sym_sec->call_check_done)
11627 {
11628 int recur;
11629
11630 /* Mark current section as indeterminate, so that other
11631 sections that call back to current won't be marked as
11632 known. */
11633 isec->call_check_in_progress = 1;
11634 recur = toc_adjusting_stub_needed (info, sym_sec);
11635 isec->call_check_in_progress = 0;
11636
4c52953f
AM		 11637 if (recur != 0)
11638 {
70cc837d
AM		 11639 ret = recur;
11640 if (recur != 2)
11641 break;
4c52953f
AM		 11642 }
11643 }
4c52953f 11644 }
70cc837d
AM		 11645
11646 if (local_syms != NULL
11647 && (elf_symtab_hdr (isec->owner).contents
11648 != (unsigned char *) local_syms))
11649 free (local_syms);
11650 if (elf_section_data (isec)->relocs != relstart)
11651 free (relstart);
9b5ecbd0
AM		 11652 }
11653
70cc837d
AM		 11654 if ((ret & 1) == 0
11655 && isec->map_head.s != NULL
11656 && (strcmp (isec->output_section->name, ".init") == 0
11657 || strcmp (isec->output_section->name, ".fini") == 0))
11658 {
11659 if (isec->map_head.s->has_toc_reloc
11660 || isec->map_head.s->makes_toc_func_call)
11661 ret = 1;
11662 else if (!isec->map_head.s->call_check_done)
11663 {
11664 int recur;
11665 isec->call_check_in_progress = 1;
11666 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11667 isec->call_check_in_progress = 0;
11668 if (recur != 0)
11669 ret = recur;
11670 }
11671 }
11672
11673 if (ret == 1)
11674 isec->makes_toc_func_call = 1;
4c52953f 11675
9b5ecbd0
AM		 11676 return ret;
11677}
11678
721956f4
AM		 11679/* The linker repeatedly calls this function for each input section,
11680 in the order that input sections are linked into output sections.
11681 Build lists of input sections to determine groupings between which
11682 we may insert linker stubs. */
11683
9b5ecbd0 11684bfd_boolean
4ce794b7 11685ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11686{
11687 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11688
4dfe6ac6
NC		 11689 if (htab == NULL)
11690 return FALSE;
11691
734b6cf9
AM		 11692 if ((isec->output_section->flags & SEC_CODE) != 0
11693 && isec->output_section->index <= htab->top_index)
721956f4 11694 {
734b6cf9 11695 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11696 /* Steal the link_sec pointer for our list. */
721956f4 11697#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 11698 /* This happens to make the list in reverse order,
11699 which is what we want. */
734b6cf9
AM		 11700 PREV_SEC (isec) = *list;
11701 *list = isec;
721956f4 11702 }
ad8e1ba5 11703
4c52953f 11704 if (htab->multi_toc_needed)
9b5ecbd0 11705 {
8b974ba3
AM		 11706 /* Analyse sections that aren't already flagged as needing a
11707 valid toc pointer. Exclude .fixup for the linux kernel.
11708 .fixup contains branches, but only back to the function that
11709 hit an exception. */
11710 if (!(isec->has_toc_reloc
11711 || (isec->flags & SEC_CODE) == 0
11712 || strcmp (isec->name, ".fixup") == 0
11713 || isec->call_check_done))
11714 {
11715 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11716 return FALSE;
8b974ba3
AM		 11717 }
11718 /* Make all sections use the TOC assigned for this object file.
11719 This will be wrong for pasted sections; We fix that in
11720 check_pasted_section(). */
11721 if (elf_gp (isec->owner) != 0)
11722 htab->toc_curr = elf_gp (isec->owner);
11723 }
11724
ad8e1ba5 11725 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11726 return TRUE;
721956f4
AM		 11727}
11728
70cc837d
AM		 11729/* Check that all .init and .fini sections use the same toc, if they
11730 have toc relocs. */
11731
11732static bfd_boolean
11733check_pasted_section (struct bfd_link_info *info, const char *name)
11734{
11735 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11736
11737 if (o != NULL)
11738 {
11739 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11740 bfd_vma toc_off = 0;
11741 asection *i;
11742
11743 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11744 if (i->has_toc_reloc)
11745 {
11746 if (toc_off == 0)
11747 toc_off = htab->stub_group[i->id].toc_off;
11748 else if (toc_off != htab->stub_group[i->id].toc_off)
11749 return FALSE;
11750 }
6683a28d
AM		 11751
11752 if (toc_off == 0)
11753 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11754 if (i->makes_toc_func_call)
11755 {
11756 toc_off = htab->stub_group[i->id].toc_off;
11757 break;
11758 }
11759
70cc837d
AM		 11760 /* Make sure the whole pasted function uses the same toc offset. */
11761 if (toc_off != 0)
11762 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11763 htab->stub_group[i->id].toc_off = toc_off;
11764 }
11765 return TRUE;
11766}
11767
11768bfd_boolean
11769ppc64_elf_check_init_fini (struct bfd_link_info *info)
11770{
11771 return (check_pasted_section (info, ".init")
11772 & check_pasted_section (info, ".fini"));
11773}
11774
721956f4
AM		 11775/* See whether we can group stub sections together. Grouping stub
11776 sections may result in fewer stubs. More importantly, we need to
11777 put all .init* and .fini* stubs at the beginning of the .init or
11778 .fini output sections respectively, because glibc splits the
11779 _init and _fini functions into multiple parts. Putting a stub in
11780 the middle of a function is not a good idea. */
11781
11782static void
4ce794b7
AM		 11783group_sections (struct ppc_link_hash_table *htab,
11784 bfd_size_type stub_group_size,
11785 bfd_boolean stubs_always_before_branch)
721956f4 11786{
7c8fe5c4
AM		 11787 asection **list;
11788 bfd_size_type stub14_group_size;
11789 bfd_boolean suppress_size_errors;
11790
11791 suppress_size_errors = FALSE;
11792 stub14_group_size = stub_group_size;
11793 if (stub_group_size == 1)
11794 {
11795 /* Default values. */
11796 if (stubs_always_before_branch)
11797 {
11798 stub_group_size = 0x1e00000;
11799 stub14_group_size = 0x7800;
11800 }
11801 else
11802 {
11803 stub_group_size = 0x1c00000;
11804 stub14_group_size = 0x7000;
11805 }
11806 suppress_size_errors = TRUE;
11807 }
11808
11809 list = htab->input_list + htab->top_index;
734b6cf9 11810 do
721956f4 11811 {
734b6cf9
AM		 11812 asection *tail = *list;
11813 while (tail != NULL)
721956f4 11814 {
734b6cf9
AM		 11815 asection *curr;
11816 asection *prev;
11817 bfd_size_type total;
11818 bfd_boolean big_sec;
11819 bfd_vma curr_toc;
11820
11821 curr = tail;
eea6121a 11822 total = tail->size;
6bee8834
AM		 11823 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11824 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11825 ? stub14_group_size : stub_group_size);
11826 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11827 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11828 tail->owner, tail);
734b6cf9
AM		 11829 curr_toc = htab->stub_group[tail->id].toc_off;
11830
11831 while ((prev = PREV_SEC (curr)) != NULL
11832 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11833 < (ppc64_elf_section_data (prev) != NULL
11834 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11835 ? stub14_group_size : stub_group_size))
ad8e1ba5 11836 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11837 curr = prev;
11838
11839 /* OK, the size from the start of CURR to the end is less
11840 than stub_group_size and thus can be handled by one stub
11841 section. (or the tail section is itself larger than
11842 stub_group_size, in which case we may be toast.) We
11843 should really be keeping track of the total size of stubs
11844 added here, as stubs contribute to the final output
11845 section size. That's a little tricky, and this way will
11846 only break if stubs added make the total size more than
11847 2^25, ie. for the default stub_group_size, if stubs total
11848 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11849 do
721956f4
AM		 11850 {
11851 prev = PREV_SEC (tail);
734b6cf9 11852 /* Set up this stub group. */
721956f4
AM		 11853 htab->stub_group[tail->id].link_sec = curr;
11854 }
734b6cf9
AM		 11855 while (tail != curr && (tail = prev) != NULL);
11856
11857 /* But wait, there's more! Input sections up to stub_group_size
11858 bytes before the stub section can be handled by it too.
11859 Don't do this if we have a really large section after the
11860 stubs, as adding more stubs increases the chance that
11861 branches may not reach into the stub section. */
11862 if (!stubs_always_before_branch && !big_sec)
11863 {
11864 total = 0;
11865 while (prev != NULL
11866 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11867 < (ppc64_elf_section_data (prev) != NULL
11868 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11869 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 11870 && htab->stub_group[prev->id].toc_off == curr_toc)
11871 {
11872 tail = prev;
11873 prev = PREV_SEC (tail);
11874 htab->stub_group[tail->id].link_sec = curr;
11875 }
11876 }
11877 tail = prev;
721956f4
AM		 11878 }
11879 }
734b6cf9
AM		 11880 while (list-- != htab->input_list);
11881 free (htab->input_list);
721956f4
AM		 11882#undef PREV_SEC
11883}
11884
58d180e8
AM		 11885static const unsigned char glink_eh_frame_cie[] =
11886{
11887 0, 0, 0, 16, /* length. */
11888 0, 0, 0, 0, /* id. */
11889 1, /* CIE version. */
11890 'z', 'R', 0, /* Augmentation string. */
11891 4, /* Code alignment. */
11892 0x78, /* Data alignment. */
11893 65, /* RA reg. */
11894 1, /* Augmentation size. */
11895 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11896 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11897};
11898
d969d15f
AM		 11899/* Stripping output sections is normally done before dynamic section
11900 symbols have been allocated. This function is called later, and
11901 handles cases like htab->brlt which is mapped to its own output
11902 section. */
11903
11904static void
11905maybe_strip_output (struct bfd_link_info *info, asection *isec)
11906{
11907 if (isec->size == 0
11908 && isec->output_section->size == 0
53d8967a 11909 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11910 && !bfd_section_removed_from_list (info->output_bfd,
11911 isec->output_section)
11912 && elf_section_data (isec->output_section)->dynindx == 0)
11913 {
11914 isec->output_section->flags |= SEC_EXCLUDE;
11915 bfd_section_list_remove (info->output_bfd, isec->output_section);
11916 info->output_bfd->section_count--;
11917 }
11918}
11919
721956f4
AM		 11920/* Determine and set the size of the stub section for a final link.
11921
11922 The basic idea here is to examine all the relocations looking for
11923 PC-relative calls to a target that is unreachable with a "bl"
11924 instruction. */
11925
b34976b6 11926bfd_boolean
e7d1c40c 11927ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11928{
11929 bfd_size_type stub_group_size;
b34976b6 11930 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11931 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11932
4dfe6ac6
NC		 11933 if (htab == NULL)
11934 return FALSE;
11935
e7d1c40c
AM		 11936 if (htab->params->plt_thread_safe == -1 && !info->executable)
11937 htab->params->plt_thread_safe = 1;
b9e5796b 11938 if (!htab->opd_abi)
e7d1c40c
AM		 11939 htab->params->plt_thread_safe = 0;
11940 else if (htab->params->plt_thread_safe == -1)
794e51c0 11941 {
e2458743 11942 static const char *const thread_starter[] =
794e51c0
AM		 11943 {
11944 "pthread_create",
11945 /* libstdc++ */
11946 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11947 /* librt */
11948 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11949 "mq_notify", "create_timer",
11950 /* libanl */
11951 "getaddrinfo_a",
11952 /* libgomp */
11953 "GOMP_parallel_start",
11954 "GOMP_parallel_loop_static_start",
11955 "GOMP_parallel_loop_dynamic_start",
11956 "GOMP_parallel_loop_guided_start",
11957 "GOMP_parallel_loop_runtime_start",
68ffbac6 11958 "GOMP_parallel_sections_start",
794e51c0
AM		 11959 };
11960 unsigned i;
11961
11962 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11963 {
11964 struct elf_link_hash_entry *h;
11965 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11966 FALSE, FALSE, TRUE);
e7d1c40c
AM		 11967 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11968 if (htab->params->plt_thread_safe)
794e51c0
AM		 11969 break;
11970 }
11971 }
e7d1c40c
AM		 11972 stubs_always_before_branch = htab->params->group_size < 0;
11973 if (htab->params->group_size < 0)
11974 stub_group_size = -htab->params->group_size;
721956f4 11975 else
e7d1c40c 11976 stub_group_size = htab->params->group_size;
721956f4
AM		 11977
11978 group_sections (htab, stub_group_size, stubs_always_before_branch);
11979
721956f4
AM		 11980 while (1)
11981 {
11982 bfd *input_bfd;
11983 unsigned int bfd_indx;
11984 asection *stub_sec;
721956f4
AM		 11985
11986 htab->stub_iteration += 1;
721956f4
AM		 11987
11988 for (input_bfd = info->input_bfds, bfd_indx = 0;
11989 input_bfd != NULL;
c72f2fb2 11990 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 11991 {
11992 Elf_Internal_Shdr *symtab_hdr;
11993 asection *section;
6cdc0ccc 11994 Elf_Internal_Sym *local_syms = NULL;
721956f4 11995
0c8d6e5c 11996 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 11997 continue;
11998
721956f4 11999 /* We'll need the symbol table in a second. */
0ffa91dd 12000 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 12001 if (symtab_hdr->sh_info == 0)
12002 continue;
12003
721956f4
AM		 12004 /* Walk over each section attached to the input bfd. */
12005 for (section = input_bfd->sections;
12006 section != NULL;
12007 section = section->next)
12008 {
721956f4 12009 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12010
12011 /* If there aren't any relocs, then there's nothing more
12012 to do. */
12013 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12014 || (section->flags & SEC_ALLOC) == 0
12015 || (section->flags & SEC_LOAD) == 0
12016 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12017 || section->reloc_count == 0)
12018 continue;
12019
12020 /* If this section is a link-once section that will be
12021 discarded, then don't create any stubs. */
12022 if (section->output_section == NULL
927be08e 12023 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12024 continue;
12025
1e2f5b6e
AM		 12026 /* Get the relocs. */
12027 internal_relocs
4ce794b7 12028 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12029 info->keep_memory);
721956f4 12030 if (internal_relocs == NULL)
1e2f5b6e 12031 goto error_ret_free_local;
721956f4
AM		 12032
12033 /* Now examine each relocation. */
12034 irela = internal_relocs;
12035 irelaend = irela + section->reloc_count;
12036 for (; irela < irelaend; irela++)
12037 {
4ce794b7
AM		 12038 enum elf_ppc64_reloc_type r_type;
12039 unsigned int r_indx;
721956f4
AM		 12040 enum ppc_stub_type stub_type;
12041 struct ppc_stub_hash_entry *stub_entry;
8387904d 12042 asection *sym_sec, *code_sec;
e054468f 12043 bfd_vma sym_value, code_value;
721956f4 12044 bfd_vma destination;
6911b7dc 12045 unsigned long local_off;
8843416a 12046 bfd_boolean ok_dest;
721956f4 12047 struct ppc_link_hash_entry *hash;
8387904d 12048 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12049 struct elf_link_hash_entry *h;
12050 Elf_Internal_Sym *sym;
721956f4
AM		 12051 char *stub_name;
12052 const asection *id_sec;
74f0fb50 12053 struct _opd_sec_data *opd;
e054468f 12054 struct plt_entry *plt_ent;
721956f4
AM		 12055
12056 r_type = ELF64_R_TYPE (irela->r_info);
12057 r_indx = ELF64_R_SYM (irela->r_info);
12058
4ce794b7 12059 if (r_type >= R_PPC64_max)
721956f4
AM		 12060 {
12061 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12062 goto error_ret_free_internal;
721956f4
AM		 12063 }
12064
12065 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12066 if (r_type != R_PPC64_REL24
12067 && r_type != R_PPC64_REL14
12068 && r_type != R_PPC64_REL14_BRTAKEN
12069 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12070 continue;
12071
12072 /* Now determine the call target, its name, value,
12073 section. */
411e1bfb
AM		 12074 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12075 r_indx, input_bfd))
12076 goto error_ret_free_internal;
12077 hash = (struct ppc_link_hash_entry *) h;
12078
8843416a 12079 ok_dest = FALSE;
8387904d 12080 fdh = NULL;
7fe2b9a6 12081 sym_value = 0;
411e1bfb 12082 if (hash == NULL)
721956f4 12083 {
411e1bfb 12084 sym_value = sym->st_value;
8843416a 12085 ok_dest = TRUE;
721956f4 12086 }
7fe2b9a6
AM		 12087 else if (hash->elf.root.type == bfd_link_hash_defined
12088 || hash->elf.root.type == bfd_link_hash_defweak)
12089 {
12090 sym_value = hash->elf.root.u.def.value;
12091 if (sym_sec->output_section != NULL)
12092 ok_dest = TRUE;
12093 }
12094 else if (hash->elf.root.type == bfd_link_hash_undefweak
12095 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12096 {
99877b66 12097 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12098 use the func descriptor sym instead if it is
12099 defined. */
ceb1f1ef 12100 if (hash->elf.root.root.string[0] == '.'
b31867b6 12101 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12102 {
8387904d
AM		 12103 if (fdh->elf.root.type == bfd_link_hash_defined
12104 || fdh->elf.root.type == bfd_link_hash_defweak)
12105 {
12106 sym_sec = fdh->elf.root.u.def.section;
12107 sym_value = fdh->elf.root.u.def.value;
12108 if (sym_sec->output_section != NULL)
12109 ok_dest = TRUE;
12110 }
99877b66
AM		 12111 else
12112 fdh = NULL;
8387904d 12113 }
7fe2b9a6
AM		 12114 }
12115 else
12116 {
12117 bfd_set_error (bfd_error_bad_value);
12118 goto error_ret_free_internal;
721956f4
AM		 12119 }
12120
8843416a 12121 destination = 0;
6911b7dc 12122 local_off = 0;
8843416a
AM		 12123 if (ok_dest)
12124 {
12125 sym_value += irela->r_addend;
12126 destination = (sym_value
12127 + sym_sec->output_offset
12128 + sym_sec->output_section->vma);
6911b7dc
AM		 12129 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12130 ? hash->elf.other
12131 : sym->st_other);
8843416a
AM		 12132 }
12133
8387904d 12134 code_sec = sym_sec;
e054468f 12135 code_value = sym_value;
74f0fb50
AM		 12136 opd = get_opd_info (sym_sec);
12137 if (opd != NULL)
8387904d
AM		 12138 {
12139 bfd_vma dest;
12140
74f0fb50 12141 if (hash == NULL && opd->adjust != NULL)
8387904d 12142 {
74f0fb50 12143 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 12144 if (adjust == -1)
12145 continue;
e054468f 12146 code_value += adjust;
8387904d
AM		 12147 sym_value += adjust;
12148 }
12149 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12150 &code_sec, &code_value, FALSE);
8387904d
AM		 12151 if (dest != (bfd_vma) -1)
12152 {
12153 destination = dest;
12154 if (fdh != NULL)
12155 {
12156 /* Fixup old ABI sym to point at code
12157 entry. */
99877b66 12158 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12159 hash->elf.root.u.def.section = code_sec;
e054468f 12160 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12161 }
12162 }
12163 }
12164
721956f4 12165 /* Determine what (if any) linker stub is needed. */
e054468f 12166 plt_ent = NULL;
721956f4 12167 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12168 &plt_ent, destination,
12169 local_off);
ad8e1ba5
AM		 12170
12171 if (stub_type != ppc_stub_plt_call)
12172 {
12173 /* Check whether we need a TOC adjusting stub.
12174 Since the linker pastes together pieces from
12175 different object files when creating the
12176 _init and _fini functions, it may be that a
12177 call to what looks like a local sym is in
12178 fact a call needing a TOC adjustment. */
8387904d
AM		 12179 if (code_sec != NULL
12180 && code_sec->output_section != NULL
12181 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 12182 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 12183 && (code_sec->has_toc_reloc
12184 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12185 stub_type = ppc_stub_long_branch_r2off;
12186 }
12187
721956f4
AM		 12188 if (stub_type == ppc_stub_none)
12189 continue;
12190
411e1bfb
AM		 12191 /* __tls_get_addr calls might be eliminated. */
12192 if (stub_type != ppc_stub_plt_call
12193 && hash != NULL
8387904d
AM		 12194 && (hash == htab->tls_get_addr
12195 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12196 && section->has_tls_reloc
12197 && irela != internal_relocs)
12198 {
12199 /* Get tls info. */
f961d9dd 12200 unsigned char *tls_mask;
411e1bfb 12201
3a71aa26 12202 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12203 irela - 1, input_bfd))
12204 goto error_ret_free_internal;
e7b938ca 12205 if (*tls_mask != 0)
411e1bfb
AM		 12206 continue;
12207 }
12208
3b421ab3
AM		 12209 if (stub_type == ppc_stub_plt_call
12210 && irela + 1 < irelaend
12211 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12212 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12213 {
12214 if (!tocsave_find (htab, INSERT,
12215 &local_syms, irela + 1, input_bfd))
12216 goto error_ret_free_internal;
12217 }
12218 else if (stub_type == ppc_stub_plt_call)
12219 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12220
721956f4
AM		 12221 /* Support for grouping stub sections. */
12222 id_sec = htab->stub_group[section->id].link_sec;
12223
12224 /* Get the name of this stub. */
12225 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12226 if (!stub_name)
12227 goto error_ret_free_internal;
12228
12229 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12230 stub_name, FALSE, FALSE);
721956f4
AM		 12231 if (stub_entry != NULL)
12232 {
12233 /* The proper stub has already been created. */
12234 free (stub_name);
794e51c0
AM		 12235 if (stub_type == ppc_stub_plt_call_r2save)
12236 stub_entry->stub_type = stub_type;
721956f4
AM		 12237 continue;
12238 }
12239
25f53a85 12240 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12241 if (stub_entry == NULL)
12242 {
12243 free (stub_name);
6cdc0ccc
AM		 12244 error_ret_free_internal:
12245 if (elf_section_data (section)->relocs == NULL)
12246 free (internal_relocs);
12247 error_ret_free_local:
12248 if (local_syms != NULL
12249 && (symtab_hdr->contents
12250 != (unsigned char *) local_syms))
12251 free (local_syms);
b34976b6 12252 return FALSE;
721956f4
AM		 12253 }
12254
ad8e1ba5 12255 stub_entry->stub_type = stub_type;
794e51c0
AM		 12256 if (stub_type != ppc_stub_plt_call
12257 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12258 {
12259 stub_entry->target_value = code_value;
12260 stub_entry->target_section = code_sec;
12261 }
12262 else
12263 {
12264 stub_entry->target_value = sym_value;
12265 stub_entry->target_section = sym_sec;
12266 }
721956f4 12267 stub_entry->h = hash;
e054468f 12268 stub_entry->plt_ent = plt_ent;
6911b7dc 12269 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12270
12271 if (stub_entry->h != NULL)
12272 htab->stub_globals += 1;
721956f4
AM		 12273 }
12274
12275 /* We're done with the internal relocs, free them. */
6cdc0ccc 12276 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12277 free (internal_relocs);
721956f4 12278 }
6cdc0ccc
AM		 12279
12280 if (local_syms != NULL
12281 && symtab_hdr->contents != (unsigned char *) local_syms)
12282 {
12283 if (!info->keep_memory)
12284 free (local_syms);
12285 else
12286 symtab_hdr->contents = (unsigned char *) local_syms;
12287 }
721956f4
AM		 12288 }
12289
5c3dead3 12290 /* We may have added some stubs. Find out the new size of the
721956f4 12291 stub sections. */
e7d1c40c 12292 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12293 stub_sec != NULL;
12294 stub_sec = stub_sec->next)
e717da7e 12295 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12296 {
5c3dead3 12297 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12298 stub_sec->size = 0;
12299 stub_sec->reloc_count = 0;
84f5d08e 12300 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12301 }
eea6121a
AM		 12302
12303 htab->brlt->size = 0;
84f5d08e
AM		 12304 htab->brlt->reloc_count = 0;
12305 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12306 if (htab->relbrlt != NULL)
eea6121a 12307 htab->relbrlt->size = 0;
721956f4 12308
63bc6f6c 12309 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12310
176a0d42
AM		 12311 if (info->emitrelocations
12312 && htab->glink != NULL && htab->glink->size != 0)
12313 {
12314 htab->glink->reloc_count = 1;
12315 htab->glink->flags |= SEC_RELOC;
12316 }
12317
58d180e8
AM		 12318 if (htab->glink_eh_frame != NULL
12319 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12320 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12321 {
4bbe044a 12322 size_t size = 0, align;
58d180e8 12323
e7d1c40c 12324 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12325 stub_sec != NULL;
12326 stub_sec = stub_sec->next)
12327 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12328 size += 20;
12329 if (htab->glink != NULL && htab->glink->size != 0)
12330 size += 24;
12331 if (size != 0)
12332 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12333 align = 1;
12334 align <<= htab->glink_eh_frame->output_section->alignment_power;
12335 align -= 1;
12336 size = (size + align) & ~align;
58d180e8
AM		 12337 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12338 htab->glink_eh_frame->size = size;
12339 }
12340
e7d1c40c
AM		 12341 if (htab->params->plt_stub_align != 0)
12342 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12343 stub_sec != NULL;
12344 stub_sec = stub_sec->next)
12345 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12346 stub_sec->size = ((stub_sec->size
12347 + (1 << htab->params->plt_stub_align) - 1)
12348 & (-1 << htab->params->plt_stub_align));
794e51c0 12349
e7d1c40c 12350 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12351 stub_sec != NULL;
12352 stub_sec = stub_sec->next)
12353 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12354 && stub_sec->rawsize != stub_sec->size)
12355 break;
12356
12357 /* Exit from this loop when no stubs have been added, and no stubs
12358 have changed size. */
58d180e8
AM		 12359 if (stub_sec == NULL
12360 && (htab->glink_eh_frame == NULL
12361 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12362 break;
12363
721956f4 12364 /* Ask the linker to do its stuff. */
e7d1c40c 12365 (*htab->params->layout_sections_again) ();
721956f4
AM		 12366 }
12367
d969d15f
AM		 12368 maybe_strip_output (info, htab->brlt);
12369 if (htab->glink_eh_frame != NULL)
12370 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12371
b34976b6 12372 return TRUE;
721956f4
AM		 12373}
12374
12375/* Called after we have determined section placement. If sections
805fc799 12376 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12377
805fc799 12378bfd_vma
1c865ab2 12379ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12380{
805fc799
AM		 12381 asection *s;
12382 bfd_vma TOCstart;
721956f4 12383
805fc799
AM		 12384 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12385 order. The TOC starts where the first of these sections starts. */
12386 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12387 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12388 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12389 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12390 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12391 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12392 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12393 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12394 {
12395 /* This may happen for
12396 o references to TOC base (SYM@toc / TOC[tc0]) without a
12397 .toc directive
12398 o bad linker script
12399 o --gc-sections and empty TOC sections
12400
12401 FIXME: Warn user? */
12402
12403 /* Look for a likely section. We probably won't even be
12404 using TOCstart. */
12405 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12406 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12407 | SEC_EXCLUDE))
805fc799
AM		 12408 == (SEC_ALLOC | SEC_SMALL_DATA))
12409 break;
721956f4 12410 if (s == NULL)
805fc799 12411 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12412 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12413 == (SEC_ALLOC | SEC_SMALL_DATA))
12414 break;
721956f4 12415 if (s == NULL)
805fc799 12416 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12417 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12418 == SEC_ALLOC)
805fc799 12419 break;
721956f4 12420 if (s == NULL)
805fc799 12421 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12422 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12423 break;
12424 }
721956f4 12425
805fc799
AM		 12426 TOCstart = 0;
12427 if (s != NULL)
12428 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12429
1c865ab2
AM		 12430 _bfd_set_gp_value (obfd, TOCstart);
12431
810d4e75 12432 if (info != NULL && s != NULL)
1c865ab2
AM		 12433 {
12434 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12435
810d4e75
AM		 12436 if (htab != NULL)
12437 {
12438 if (htab->elf.hgot != NULL)
12439 {
12440 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12441 htab->elf.hgot->root.u.def.section = s;
12442 }
12443 }
12444 else
1c865ab2 12445 {
810d4e75
AM		 12446 struct bfd_link_hash_entry *bh = NULL;
12447 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12448 s, TOC_BASE_OFF, NULL, FALSE,
12449 FALSE, &bh);
1c865ab2
AM		 12450 }
12451 }
805fc799 12452 return TOCstart;
721956f4
AM		 12453}
12454
a345bc8d
AM		 12455/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12456 write out any global entry stubs. */
12457
12458static bfd_boolean
12459build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12460{
12461 struct bfd_link_info *info;
12462 struct ppc_link_hash_table *htab;
12463 struct plt_entry *pent;
12464 asection *s;
12465
12466 if (h->root.type == bfd_link_hash_indirect)
12467 return TRUE;
12468
12469 if (!h->pointer_equality_needed)
12470 return TRUE;
12471
12472 if (h->def_regular)
12473 return TRUE;
12474
12475 info = inf;
12476 htab = ppc_hash_table (info);
12477 if (htab == NULL)
12478 return FALSE;
12479
12480 s = htab->glink;
12481 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12482 if (pent->plt.offset != (bfd_vma) -1
12483 && pent->addend == 0)
12484 {
12485 bfd_byte *p;
12486 asection *plt;
12487 bfd_vma off;
12488
a345bc8d 12489 p = s->contents + h->root.u.def.value;
33e44f2e 12490 plt = htab->elf.splt;
a345bc8d
AM		 12491 if (!htab->elf.dynamic_sections_created
12492 || h->dynindx == -1)
33e44f2e 12493 plt = htab->elf.iplt;
a345bc8d
AM		 12494 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12495 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12496
12497 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12498 {
12499 info->callbacks->einfo
12500 (_("%P: linkage table error against `%T'\n"),
12501 h->root.root.string);
12502 bfd_set_error (bfd_error_bad_value);
12503 htab->stub_error = TRUE;
12504 }
12505
7341d5e2
AM		 12506 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12507 if (htab->params->emit_stub_syms)
12508 {
12509 size_t len = strlen (h->root.root.string);
12510 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12511
12512 if (name == NULL)
12513 return FALSE;
12514
12515 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12516 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12517 if (h == NULL)
12518 return FALSE;
12519 if (h->root.type == bfd_link_hash_new)
12520 {
12521 h->root.type = bfd_link_hash_defined;
12522 h->root.u.def.section = s;
12523 h->root.u.def.value = p - s->contents;
12524 h->ref_regular = 1;
12525 h->def_regular = 1;
12526 h->ref_regular_nonweak = 1;
12527 h->forced_local = 1;
12528 h->non_elf = 0;
12529 }
12530 }
12531
a345bc8d
AM		 12532 if (PPC_HA (off) != 0)
12533 {
12534 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12535 p += 4;
12536 }
12537 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12538 p += 4;
12539 bfd_put_32 (s->owner, MTCTR_R12, p);
12540 p += 4;
12541 bfd_put_32 (s->owner, BCTR, p);
12542 break;
12543 }
12544 return TRUE;
12545}
12546
721956f4
AM		 12547/* Build all the stubs associated with the current output file.
12548 The stubs are kept in a hash table attached to the main linker
12549 hash table. This function is called via gldelf64ppc_finish. */
12550
b34976b6 12551bfd_boolean
e7d1c40c 12552ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12553 char **stats)
5d1634d7
AM		 12554{
12555 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12556 asection *stub_sec;
5d1634d7 12557 bfd_byte *p;
e717da7e 12558 int stub_sec_count = 0;
5d1634d7 12559
4dfe6ac6
NC		 12560 if (htab == NULL)
12561 return FALSE;
12562
eea6121a 12563 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12564 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12565 stub_sec != NULL;
12566 stub_sec = stub_sec->next)
eea6121a
AM		 12567 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12568 && stub_sec->size != 0)
e717da7e 12569 {
e7d1c40c 12570 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12571 if (stub_sec->contents == NULL)
12572 return FALSE;
12573 /* We want to check that built size is the same as calculated
12574 size. rawsize is a convenient location to use. */
12575 stub_sec->rawsize = stub_sec->size;
12576 stub_sec->size = 0;
e717da7e 12577 }
5d1634d7 12578
23eb7e01 12579 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12580 {
9f951329 12581 unsigned int indx;
ad8e1ba5 12582 bfd_vma plt0;
9f951329 12583
721956f4 12584 /* Build the .glink plt call stub. */
e7d1c40c 12585 if (htab->params->emit_stub_syms)
97b639ba
AM		 12586 {
12587 struct elf_link_hash_entry *h;
468392fb
AM		 12588 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12589 TRUE, FALSE, FALSE);
97b639ba
AM		 12590 if (h == NULL)
12591 return FALSE;
12592 if (h->root.type == bfd_link_hash_new)
12593 {
12594 h->root.type = bfd_link_hash_defined;
12595 h->root.u.def.section = htab->glink;
ee4bf8d2 12596 h->root.u.def.value = 8;
f5385ebf
AM		 12597 h->ref_regular = 1;
12598 h->def_regular = 1;
12599 h->ref_regular_nonweak = 1;
12600 h->forced_local = 1;
12601 h->non_elf = 0;
97b639ba
AM		 12602 }
12603 }
33e44f2e
AM		 12604 plt0 = (htab->elf.splt->output_section->vma
12605 + htab->elf.splt->output_offset
12606 - 16);
176a0d42
AM		 12607 if (info->emitrelocations)
12608 {
12609 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12610 if (r == NULL)
12611 return FALSE;
12612 r->r_offset = (htab->glink->output_offset
12613 + htab->glink->output_section->vma);
12614 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12615 r->r_addend = plt0;
12616 }
4ce794b7 12617 p = htab->glink->contents;
176a0d42 12618 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12619 bfd_put_64 (htab->glink->owner, plt0, p);
12620 p += 8;
b9e5796b
AM		 12621 if (htab->opd_abi)
12622 {
12623 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12624 p += 4;
12625 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12626 p += 4;
12627 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12628 p += 4;
12629 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12630 p += 4;
12631 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12632 p += 4;
12633 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12634 p += 4;
12635 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12636 p += 4;
12637 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12638 p += 4;
12639 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12640 p += 4;
12641 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12642 p += 4;
12643 }
12644 else
12645 {
12646 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12647 p += 4;
12648 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12649 p += 4;
12650 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12651 p += 4;
12652 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12653 p += 4;
12654 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12655 p += 4;
12656 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12657 p += 4;
12658 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12659 p += 4;
12660 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12661 p += 4;
12662 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12663 p += 4;
12664 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12665 p += 4;
12666 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12667 p += 4;
12668 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12669 p += 4;
12670 }
4ce794b7 12671 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12672 p += 4;
ee4bf8d2
AM		 12673 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12674 {
12675 bfd_put_32 (htab->glink->owner, NOP, p);
12676 p += 4;
12677 }
ad8e1ba5 12678
9f951329
AM		 12679 /* Build the .glink lazy link call stubs. */
12680 indx = 0;
a345bc8d 12681 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12682 {
b9e5796b 12683 if (htab->opd_abi)
9f951329 12684 {
b9e5796b
AM		 12685 if (indx < 0x8000)
12686 {
12687 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12688 p += 4;
12689 }
12690 else
12691 {
12692 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12693 p += 4;
12694 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12695 p);
12696 p += 4;
12697 }
9f951329 12698 }
4ce794b7 12699 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12700 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12701 indx++;
9f951329
AM		 12702 p += 4;
12703 }
a345bc8d
AM		 12704
12705 /* Build .glink global entry stubs. */
12706 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12707 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12708 }
5d1634d7 12709
7341d5e2 12710 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12711 {
4ce794b7 12712 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12713 htab->brlt->size);
4ce794b7 12714 if (htab->brlt->contents == NULL)
b34976b6 12715 return FALSE;
721956f4 12716 }
ee75fd95 12717 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12718 {
12719 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12720 htab->relbrlt->size);
63bc6f6c
AM		 12721 if (htab->relbrlt->contents == NULL)
12722 return FALSE;
12723 }
5d1634d7 12724
58d180e8
AM		 12725 if (htab->glink_eh_frame != NULL
12726 && htab->glink_eh_frame->size != 0)
12727 {
12728 bfd_vma val;
4bbe044a
AM		 12729 bfd_byte *last_fde;
12730 size_t last_fde_len, size, align, pad;
58d180e8
AM		 12731
12732 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12733 if (p == NULL)
12734 return FALSE;
12735 htab->glink_eh_frame->contents = p;
4bbe044a 12736 last_fde = p;
58d180e8
AM		 12737
12738 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12739
12740 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12741 /* CIE length (rewrite in case little-endian). */
4bbe044a
AM		 12742 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12743 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
58d180e8
AM		 12744 p += sizeof (glink_eh_frame_cie);
12745
e7d1c40c 12746 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12747 stub_sec != NULL;
12748 stub_sec = stub_sec->next)
12749 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12750 {
4bbe044a
AM		 12751 last_fde = p;
12752 last_fde_len = 16;
58d180e8
AM		 12753 /* FDE length. */
12754 bfd_put_32 (htab->elf.dynobj, 16, p);
12755 p += 4;
12756 /* CIE pointer. */
12757 val = p - htab->glink_eh_frame->contents;
12758 bfd_put_32 (htab->elf.dynobj, val, p);
12759 p += 4;
12760 /* Offset to stub section. */
12761 val = (stub_sec->output_section->vma
12762 + stub_sec->output_offset);
12763 val -= (htab->glink_eh_frame->output_section->vma
12764 + htab->glink_eh_frame->output_offset);
12765 val -= p - htab->glink_eh_frame->contents;
12766 if (val + 0x80000000 > 0xffffffff)
12767 {
12768 info->callbacks->einfo
8de848d8 12769 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
58d180e8
AM		 12770 stub_sec->name);
12771 return FALSE;
12772 }
12773 bfd_put_32 (htab->elf.dynobj, val, p);
12774 p += 4;
12775 /* stub section size. */
12776 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12777 p += 4;
12778 /* Augmentation. */
12779 p += 1;
12780 /* Pad. */
12781 p += 3;
12782 }
12783 if (htab->glink != NULL && htab->glink->size != 0)
12784 {
4bbe044a
AM		 12785 last_fde = p;
12786 last_fde_len = 20;
58d180e8
AM		 12787 /* FDE length. */
12788 bfd_put_32 (htab->elf.dynobj, 20, p);
12789 p += 4;
12790 /* CIE pointer. */
12791 val = p - htab->glink_eh_frame->contents;
12792 bfd_put_32 (htab->elf.dynobj, val, p);
12793 p += 4;
12794 /* Offset to .glink. */
12795 val = (htab->glink->output_section->vma
12796 + htab->glink->output_offset
12797 + 8);
12798 val -= (htab->glink_eh_frame->output_section->vma
12799 + htab->glink_eh_frame->output_offset);
12800 val -= p - htab->glink_eh_frame->contents;
12801 if (val + 0x80000000 > 0xffffffff)
12802 {
12803 info->callbacks->einfo
8de848d8 12804 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
58d180e8
AM		 12805 htab->glink->name);
12806 return FALSE;
12807 }
12808 bfd_put_32 (htab->elf.dynobj, val, p);
12809 p += 4;
12810 /* .glink size. */
a345bc8d 12811 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
58d180e8
AM		 12812 p += 4;
12813 /* Augmentation. */
12814 p += 1;
12815
12816 *p++ = DW_CFA_advance_loc + 1;
12817 *p++ = DW_CFA_register;
12818 *p++ = 65;
12819 *p++ = 12;
12820 *p++ = DW_CFA_advance_loc + 4;
12821 *p++ = DW_CFA_restore_extended;
12822 *p++ = 65;
12823 }
4bbe044a
AM		 12824 /* Subsume any padding into the last FDE if user .eh_frame
12825 sections are aligned more than glink_eh_frame. Otherwise any
12826 zero padding will be seen as a terminator. */
12827 size = p - htab->glink_eh_frame->contents;
12828 align = 1;
12829 align <<= htab->glink_eh_frame->output_section->alignment_power;
12830 align -= 1;
12831 pad = ((size + align) & ~align) - size;
12832 htab->glink_eh_frame->size = size + pad;
12833 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
58d180e8
AM		 12834 }
12835
721956f4
AM		 12836 /* Build the stubs as directed by the stub hash table. */
12837 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12838
aa8a7074
AM		 12839 if (htab->relbrlt != NULL)
12840 htab->relbrlt->reloc_count = 0;
12841
e7d1c40c
AM		 12842 if (htab->params->plt_stub_align != 0)
12843 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12844 stub_sec != NULL;
12845 stub_sec = stub_sec->next)
12846 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12847 stub_sec->size = ((stub_sec->size
12848 + (1 << htab->params->plt_stub_align) - 1)
12849 & (-1 << htab->params->plt_stub_align));
794e51c0 12850
e7d1c40c 12851 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12852 stub_sec != NULL;
12853 stub_sec = stub_sec->next)
e717da7e
AM		 12854 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12855 {
12856 stub_sec_count += 1;
eea6121a 12857 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12858 break;
12859 }
5d1634d7 12860
721956f4 12861 if (stub_sec != NULL
58d180e8
AM		 12862 || (htab->glink_eh_frame != NULL
12863 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12864 {
b34976b6 12865 htab->stub_error = TRUE;
8de848d8 12866 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12867 }
721956f4 12868
d2a300cf
AM		 12869 if (htab->stub_error)
12870 return FALSE;
12871
12872 if (stats != NULL)
12873 {
12874 *stats = bfd_malloc (500);
12875 if (*stats == NULL)
12876 return FALSE;
12877
ee75fd95 12878 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 12879 " branch %lu\n"
12880 " toc adjust %lu\n"
12881 " long branch %lu\n"
12882 " long toc adj %lu\n"
794e51c0 12883 " plt call %lu\n"
7341d5e2
AM		 12884 " plt call toc %lu\n"
12885 " global entry %lu"),
e717da7e 12886 stub_sec_count,
ee75fd95 12887 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 12888 htab->stub_count[ppc_stub_long_branch - 1],
12889 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12890 htab->stub_count[ppc_stub_plt_branch - 1],
12891 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 12892 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 12893 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12894 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 12895 }
12896 return TRUE;
5bd4f169
AM		 12897}
12898
99877b66
AM		 12899/* This function undoes the changes made by add_symbol_adjust. */
12900
12901static bfd_boolean
12902undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12903{
12904 struct ppc_link_hash_entry *eh;
12905
12906 if (h->root.type == bfd_link_hash_indirect)
12907 return TRUE;
12908
99877b66
AM		 12909 eh = (struct ppc_link_hash_entry *) h;
12910 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12911 return TRUE;
12912
12913 eh->elf.root.type = bfd_link_hash_undefined;
12914 return TRUE;
12915}
12916
12917void
12918ppc64_elf_restore_symbols (struct bfd_link_info *info)
12919{
12920 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 12921
12922 if (htab != NULL)
12923 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 12924}
12925
60124e18
AM		 12926/* What to do when ld finds relocations against symbols defined in
12927 discarded sections. */
12928
12929static unsigned int
12930ppc64_elf_action_discarded (asection *sec)
12931{
12932 if (strcmp (".opd", sec->name) == 0)
12933 return 0;
12934
12935 if (strcmp (".toc", sec->name) == 0)
12936 return 0;
12937
bce50a28
JJ		 12938 if (strcmp (".toc1", sec->name) == 0)
12939 return 0;
12940
60124e18
AM		 12941 return _bfd_elf_default_action_discarded (sec);
12942}
12943
5bd4f169
AM		 12944/* The RELOCATE_SECTION function is called by the ELF backend linker
12945 to handle the relocations for a section.
12946
12947 The relocs are always passed as Rela structures; if the section
12948 actually uses Rel structures, the r_addend field will always be
12949 zero.
12950
12951 This function is responsible for adjust the section contents as
12952 necessary, and (if using Rela relocs and generating a
1049f94e 12953 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 12954 necessary.
12955
12956 This function does not have to worry about setting the reloc
12957 address or the reloc symbol index.
12958
12959 LOCAL_SYMS is a pointer to the swapped in local symbols.
12960
12961 LOCAL_SECTIONS is an array giving the section in the input file
12962 corresponding to the st_shndx field of each local symbol.
12963
12964 The global hash table entry for the global symbols can be found
12965 via elf_sym_hashes (input_bfd).
12966
1049f94e 12967 When generating relocatable output, this function must handle
5bd4f169
AM		 12968 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12969 going to be the section symbol corresponding to the output
12970 section, which means that the addend must be adjusted
12971 accordingly. */
12972
b34976b6 12973static bfd_boolean
4ce794b7
AM		 12974ppc64_elf_relocate_section (bfd *output_bfd,
12975 struct bfd_link_info *info,
12976 bfd *input_bfd,
12977 asection *input_section,
12978 bfd_byte *contents,
12979 Elf_Internal_Rela *relocs,
12980 Elf_Internal_Sym *local_syms,
12981 asection **local_sections)
5bd4f169 12982{
65f38f15 12983 struct ppc_link_hash_table *htab;
5bd4f169
AM		 12984 Elf_Internal_Shdr *symtab_hdr;
12985 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 12986 Elf_Internal_Rela *rel;
12987 Elf_Internal_Rela *relend;
411e1bfb
AM		 12988 Elf_Internal_Rela outrel;
12989 bfd_byte *loc;
411e1bfb 12990 struct got_entry **local_got_ents;
5bd4f169 12991 bfd_vma TOCstart;
b34976b6
AM		 12992 bfd_boolean ret = TRUE;
12993 bfd_boolean is_opd;
794e51c0
AM		 12994 /* Assume 'at' branch hints. */
12995 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 12996 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 12997
65f38f15 12998 /* Initialize howto table if needed. */
5bd4f169 12999 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 13000 ppc_howto_init ();
13001
65f38f15 13002 htab = ppc_hash_table (info);
4dfe6ac6
NC		 13003 if (htab == NULL)
13004 return FALSE;
ee75fd95
AM		 13005
13006 /* Don't relocate stub sections. */
e7d1c40c 13007 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 13008 return TRUE;
13009
0c8d6e5c 13010 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 13011
411e1bfb 13012 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 13013 TOCstart = elf_gp (output_bfd);
0ffa91dd 13014 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 13015 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 13016 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 13017
5bd4f169
AM		 13018 rel = relocs;
13019 relend = relocs + input_section->reloc_count;
13020 for (; rel < relend; rel++)
13021 {
04c9666a 13022 enum elf_ppc64_reloc_type r_type;
31c76678 13023 bfd_vma addend;
5bd4f169
AM		 13024 bfd_reloc_status_type r;
13025 Elf_Internal_Sym *sym;
13026 asection *sec;
039b3fef
AM		 13027 struct elf_link_hash_entry *h_elf;
13028 struct ppc_link_hash_entry *h;
13029 struct ppc_link_hash_entry *fdh;
5bd4f169 13030 const char *sym_name;
0d4792f7 13031 unsigned long r_symndx, toc_symndx;
3a71aa26 13032 bfd_vma toc_addend;
f961d9dd
AM		 13033 unsigned char tls_mask, tls_gd, tls_type;
13034 unsigned char sym_type;
5bd4f169 13035 bfd_vma relocation;
b34976b6
AM		 13036 bfd_boolean unresolved_reloc;
13037 bfd_boolean warned;
bc30df16 13038 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13039 unsigned int insn;
e11840f9 13040 unsigned int mask;
721956f4
AM		 13041 struct ppc_stub_hash_entry *stub_entry;
13042 bfd_vma max_br_offset;
13043 bfd_vma from;
31c76678 13044 const Elf_Internal_Rela orig_rel = *rel;
b80eed39
AM		 13045 reloc_howto_type *howto;
13046 struct reloc_howto_struct alt_howto;
5bd4f169 13047
4ce794b7 13048 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13049 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13050
13051 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13052 symbol of the previous ADDR64 reloc. The symbol gives us the
13053 proper TOC base to use. */
13054 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13055 && rel != relocs
13056 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13057 && is_opd)
13058 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13059
4ce794b7
AM		 13060 sym = NULL;
13061 sec = NULL;
039b3fef 13062 h_elf = NULL;
4ce794b7 13063 sym_name = NULL;
b34976b6
AM		 13064 unresolved_reloc = FALSE;
13065 warned = FALSE;
65f38f15 13066
0b13192e 13067 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13068 {
13069 /* It's a local symbol. */
74f0fb50 13070 struct _opd_sec_data *opd;
4025353c 13071
5bd4f169
AM		 13072 sym = local_syms + r_symndx;
13073 sec = local_sections[r_symndx];
26c61ae5 13074 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13075 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13076 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13077 opd = get_opd_info (sec);
13078 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13079 {
74f0fb50 13080 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 13081 if (adjust == -1)
13082 relocation = 0;
13083 else
4cc603a5
AM		 13084 {
13085 /* If this is a relocation against the opd section sym
13086 and we have edited .opd, adjust the reloc addend so
13087 that ld -r and ld --emit-relocs output is correct.
13088 If it is a reloc against some other .opd symbol,
13089 then the symbol value will be adjusted later. */
13090 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13091 rel->r_addend += adjust;
13092 else
13093 relocation += adjust;
13094 }
1e2f5b6e 13095 }
5bd4f169
AM		 13096 }
13097 else
13098 {
62d887d4
L		 13099 bfd_boolean ignored;
13100
b2a8e766
AM		 13101 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13102 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13103 h_elf, sec, relocation,
62d887d4 13104 unresolved_reloc, warned, ignored);
039b3fef
AM		 13105 sym_name = h_elf->root.root.string;
13106 sym_type = h_elf->type;
b69fdb4e
AM		 13107 if (sec != NULL
13108 && sec->owner == output_bfd
13109 && strcmp (sec->name, ".opd") == 0)
13110 {
13111 /* This is a symbol defined in a linker script. All
13112 such are defined in output sections, even those
13113 defined by simple assignment from a symbol defined in
13114 an input section. Transfer the symbol to an
13115 appropriate input .opd section, so that a branch to
13116 this symbol will be mapped to the location specified
13117 by the opd entry. */
13118 struct bfd_link_order *lo;
13119 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13120 if (lo->type == bfd_indirect_link_order)
13121 {
13122 asection *isec = lo->u.indirect.section;
13123 if (h_elf->root.u.def.value >= isec->output_offset
13124 && h_elf->root.u.def.value < (isec->output_offset
13125 + isec->size))
13126 {
13127 h_elf->root.u.def.value -= isec->output_offset;
13128 h_elf->root.u.def.section = isec;
13129 sec = isec;
13130 break;
13131 }
13132 }
13133 }
5bd4f169 13134 }
039b3fef 13135 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13136
dbaa2011 13137 if (sec != NULL && discarded_section (sec))
e4067dbb 13138 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR		 13139 rel, 1, relend,
13140 ppc64_elf_howto_table[r_type], 0,
e4067dbb 13141 contents);
ab96bf03
AM		 13142
13143 if (info->relocatable)
13144 continue;
13145
f40da81b
AM		 13146 if (h != NULL && &h->elf == htab->elf.hgot)
13147 {
13148 relocation = (TOCstart
13149 + htab->stub_group[input_section->id].toc_off);
13150 sec = bfd_abs_section_ptr;
13151 unresolved_reloc = FALSE;
13152 }
13153
951fd09b
AM		 13154 /* TLS optimizations. Replace instruction sequences and relocs
13155 based on information we collected in tls_optimize. We edit
13156 RELOCS so that --emit-relocs will output something sensible
13157 for the final instruction stream. */
13158 tls_mask = 0;
13159 tls_gd = 0;
0d4792f7 13160 toc_symndx = 0;
727fc41e
AM		 13161 if (h != NULL)
13162 tls_mask = h->tls_mask;
13163 else if (local_got_ents != NULL)
411e1bfb 13164 {
e054468f
AM		 13165 struct plt_entry **local_plt = (struct plt_entry **)
13166 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13167 unsigned char *lgot_masks = (unsigned char *)
e054468f 13168 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13169 tls_mask = lgot_masks[r_symndx];
13170 }
13171 if (tls_mask == 0
13172 && (r_type == R_PPC64_TLS
13173 || r_type == R_PPC64_TLSGD
13174 || r_type == R_PPC64_TLSLD))
13175 {
13176 /* Check for toc tls entries. */
f961d9dd 13177 unsigned char *toc_tls;
0d4792f7 13178
727fc41e
AM		 13179 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13180 &local_syms, rel, input_bfd))
13181 return FALSE;
0d4792f7 13182
727fc41e
AM		 13183 if (toc_tls)
13184 tls_mask = *toc_tls;
0d4792f7
AM		 13185 }
13186
13187 /* Check that tls relocs are used with tls syms, and non-tls
13188 relocs are used with non-tls syms. */
cf35638d 13189 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13190 && r_type != R_PPC64_NONE
13191 && (h == NULL
039b3fef
AM		 13192 || h->elf.root.type == bfd_link_hash_defined
13193 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13194 && (IS_PPC64_TLS_RELOC (r_type)
13195 != (sym_type == STT_TLS
13196 || (sym_type == STT_SECTION
13197 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13198 {
727fc41e
AM		 13199 if (tls_mask != 0
13200 && (r_type == R_PPC64_TLS
13201 || r_type == R_PPC64_TLSGD
13202 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13203 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13204 ;
13205 else
25f53a85 13206 info->callbacks->einfo
1d483afe 13207 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13208 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13209 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13210 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13211 ppc64_elf_howto_table[r_type]->name,
13212 sym_name);
411e1bfb
AM		 13213 }
13214
13215 /* Ensure reloc mapping code below stays sane. */
13216 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13217 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13218 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13219 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13220 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13221 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13222 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13223 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13224 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13225 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13226 abort ();
0d4792f7 13227
411e1bfb
AM		 13228 switch (r_type)
13229 {
13230 default:
411e1bfb
AM		 13231 break;
13232
ba761f19
AM		 13233 case R_PPC64_LO_DS_OPT:
13234 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13235 if ((insn & (0x3f << 26)) != 58u << 26)
13236 abort ();
13237 insn += (14u << 26) - (58u << 26);
13238 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13239 r_type = R_PPC64_TOC16_LO;
13240 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13241 break;
13242
411e1bfb
AM		 13243 case R_PPC64_TOC16:
13244 case R_PPC64_TOC16_LO:
13245 case R_PPC64_TOC16_DS:
13246 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13247 {
13248 /* Check for toc tls entries. */
f961d9dd 13249 unsigned char *toc_tls;
951fd09b 13250 int retval;
411e1bfb 13251
3a71aa26
AM		 13252 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13253 &local_syms, rel, input_bfd);
951fd09b 13254 if (retval == 0)
411e1bfb
AM		 13255 return FALSE;
13256
13257 if (toc_tls)
13258 {
951fd09b 13259 tls_mask = *toc_tls;
411e1bfb
AM		 13260 if (r_type == R_PPC64_TOC16_DS
13261 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13262 {
13263 if (tls_mask != 0
13264 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13265 goto toctprel;
13266 }
411e1bfb 13267 else
951fd09b
AM		 13268 {
13269 /* If we found a GD reloc pair, then we might be
13270 doing a GD->IE transition. */
13271 if (retval == 2)
13272 {
13273 tls_gd = TLS_TPRELGD;
13274 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13275 goto tls_ldgd_opt;
951fd09b
AM		 13276 }
13277 else if (retval == 3)
13278 {
13279 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13280 goto tls_ldgd_opt;
951fd09b
AM		 13281 }
13282 }
411e1bfb
AM		 13283 }
13284 }
13285 break;
13286
9d6ded02
AM		 13287 case R_PPC64_GOT_TPREL16_HI:
13288 case R_PPC64_GOT_TPREL16_HA:
13289 if (tls_mask != 0
13290 && (tls_mask & TLS_TPREL) == 0)
13291 {
13292 rel->r_offset -= d_offset;
13293 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13294 r_type = R_PPC64_NONE;
13295 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13296 }
13297 break;
13298
411e1bfb
AM		 13299 case R_PPC64_GOT_TPREL16_DS:
13300 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13301 if (tls_mask != 0
13302 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13303 {
81407a69 13304 toctprel:
4fe5ca5b 13305 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 13306 insn &= 31 << 21;
13307 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 13308 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 13309 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13310 if (toc_symndx != 0)
13311 {
13312 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13313 rel->r_addend = toc_addend;
0d4792f7
AM		 13314 /* We changed the symbol. Start over in order to
13315 get h, sym, sec etc. right. */
13316 rel--;
13317 continue;
13318 }
13319 else
13320 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13321 }
13322 break;
13323
13324 case R_PPC64_TLS:
951fd09b
AM		 13325 if (tls_mask != 0
13326 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13327 {
411e1bfb 13328 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13329 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13330 if (insn == 0)
411e1bfb 13331 abort ();
411e1bfb 13332 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13333 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13334 PPC64_TPREL16_LO which is at low-order half-word. */
13335 rel->r_offset += d_offset;
0d4792f7
AM		 13336 r_type = R_PPC64_TPREL16_LO;
13337 if (toc_symndx != 0)
13338 {
13339 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13340 rel->r_addend = toc_addend;
0d4792f7
AM		 13341 /* We changed the symbol. Start over in order to
13342 get h, sym, sec etc. right. */
13343 rel--;
13344 continue;
13345 }
13346 else
13347 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13348 }
13349 break;
13350
411e1bfb
AM		 13351 case R_PPC64_GOT_TLSGD16_HI:
13352 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13353 tls_gd = TLS_TPRELGD;
13354 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13355 goto tls_gdld_hi;
13356 break;
13357
411e1bfb
AM		 13358 case R_PPC64_GOT_TLSLD16_HI:
13359 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13360 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13361 {
951fd09b
AM		 13362 tls_gdld_hi:
13363 if ((tls_mask & tls_gd) != 0)
13364 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13365 + R_PPC64_GOT_TPREL16_DS);
13366 else
411e1bfb 13367 {
4fe5ca5b 13368 rel->r_offset -= d_offset;
727ac201 13369 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13370 r_type = R_PPC64_NONE;
411e1bfb 13371 }
951fd09b 13372 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13373 }
13374 break;
13375
951fd09b
AM		 13376 case R_PPC64_GOT_TLSGD16:
13377 case R_PPC64_GOT_TLSGD16_LO:
13378 tls_gd = TLS_TPRELGD;
13379 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13380 goto tls_ldgd_opt;
951fd09b 13381 break;
411e1bfb 13382
951fd09b
AM		 13383 case R_PPC64_GOT_TLSLD16:
13384 case R_PPC64_GOT_TLSLD16_LO:
13385 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13386 {
3a71aa26 13387 unsigned int insn1, insn2, insn3;
102890f0
AM		 13388 bfd_vma offset;
13389
13390 tls_ldgd_opt:
727fc41e
AM		 13391 offset = (bfd_vma) -1;
13392 /* If not using the newer R_PPC64_TLSGD/LD to mark
13393 __tls_get_addr calls, we must trust that the call
13394 stays with its arg setup insns, ie. that the next
13395 reloc is the __tls_get_addr call associated with
13396 the current reloc. Edit both insns. */
13397 if (input_section->has_tls_get_addr_call
13398 && rel + 1 < relend
13399 && branch_reloc_hash_match (input_bfd, rel + 1,
13400 htab->tls_get_addr,
13401 htab->tls_get_addr_fd))
13402 offset = rel[1].r_offset;
102890f0 13403 if ((tls_mask & tls_gd) != 0)
411e1bfb 13404 {
102890f0 13405 /* IE */
3a71aa26
AM		 13406 insn1 = bfd_get_32 (output_bfd,
13407 contents + rel->r_offset - d_offset);
102890f0
AM		 13408 insn1 &= (1 << 26) - (1 << 2);
13409 insn1 |= 58 << 26; /* ld */
13410 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13411 if (offset != (bfd_vma) -1)
f58d5a2d 13412 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13413 if ((tls_mask & TLS_EXPLICIT) == 0)
13414 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13415 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13416 else
102890f0
AM		 13417 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13418 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13419 }
13420 else
13421 {
13422 /* LE */
13423 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13424 insn2 = 0x38630000; /* addi 3,3,0 */
13425 if (tls_gd == 0)
951fd09b 13426 {
102890f0 13427 /* Was an LD reloc. */
1d483afe
AM		 13428 if (toc_symndx)
13429 sec = local_sections[toc_symndx];
13430 for (r_symndx = 0;
13431 r_symndx < symtab_hdr->sh_info;
13432 r_symndx++)
13433 if (local_sections[r_symndx] == sec)
13434 break;
13435 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13436 r_symndx = STN_UNDEF;
102890f0 13437 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13438 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13439 rel->r_addend -= (local_syms[r_symndx].st_value
13440 + sec->output_offset
13441 + sec->output_section->vma);
951fd09b 13442 }
102890f0 13443 else if (toc_symndx != 0)
3a71aa26
AM		 13444 {
13445 r_symndx = toc_symndx;
13446 rel->r_addend = toc_addend;
13447 }
102890f0
AM		 13448 r_type = R_PPC64_TPREL16_HA;
13449 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13450 if (offset != (bfd_vma) -1)
13451 {
13452 rel[1].r_info = ELF64_R_INFO (r_symndx,
13453 R_PPC64_TPREL16_LO);
13454 rel[1].r_offset = offset + d_offset;
13455 rel[1].r_addend = rel->r_addend;
13456 }
102890f0 13457 }
3a71aa26
AM		 13458 bfd_put_32 (output_bfd, insn1,
13459 contents + rel->r_offset - d_offset);
727fc41e
AM		 13460 if (offset != (bfd_vma) -1)
13461 {
13462 insn3 = bfd_get_32 (output_bfd,
13463 contents + offset + 4);
13464 if (insn3 == NOP
13465 || insn3 == CROR_151515 || insn3 == CROR_313131)
13466 {
13467 rel[1].r_offset += 4;
13468 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13469 insn2 = NOP;
13470 }
13471 bfd_put_32 (output_bfd, insn2, contents + offset);
13472 }
13473 if ((tls_mask & tls_gd) == 0
13474 && (tls_gd == 0 || toc_symndx != 0))
13475 {
13476 /* We changed the symbol. Start over in order
13477 to get h, sym, sec etc. right. */
13478 rel--;
13479 continue;
13480 }
13481 }
13482 break;
13483
13484 case R_PPC64_TLSGD:
13485 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13486 {
13487 unsigned int insn2, insn3;
13488 bfd_vma offset = rel->r_offset;
13489
13490 if ((tls_mask & TLS_TPRELGD) != 0)
13491 {
13492 /* IE */
13493 r_type = R_PPC64_NONE;
13494 insn2 = 0x7c636a14; /* add 3,3,13 */
13495 }
13496 else
13497 {
13498 /* LE */
13499 if (toc_symndx != 0)
13500 {
13501 r_symndx = toc_symndx;
13502 rel->r_addend = toc_addend;
13503 }
13504 r_type = R_PPC64_TPREL16_LO;
13505 rel->r_offset = offset + d_offset;
13506 insn2 = 0x38630000; /* addi 3,3,0 */
13507 }
13508 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13509 /* Zap the reloc on the _tls_get_addr call too. */
13510 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13511 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13512 insn3 = bfd_get_32 (output_bfd,
13513 contents + offset + 4);
102890f0
AM		 13514 if (insn3 == NOP
13515 || insn3 == CROR_151515 || insn3 == CROR_313131)
13516 {
727fc41e 13517 rel->r_offset += 4;
3a71aa26
AM		 13518 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13519 insn2 = NOP;
102890f0 13520 }
102890f0 13521 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13522 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 13523 {
102890f0
AM		 13524 rel--;
13525 continue;
411e1bfb 13526 }
411e1bfb 13527 }
411e1bfb
AM		 13528 break;
13529
727fc41e
AM		 13530 case R_PPC64_TLSLD:
13531 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13532 {
13533 unsigned int insn2, insn3;
13534 bfd_vma offset = rel->r_offset;
13535
13536 if (toc_symndx)
13537 sec = local_sections[toc_symndx];
13538 for (r_symndx = 0;
13539 r_symndx < symtab_hdr->sh_info;
13540 r_symndx++)
13541 if (local_sections[r_symndx] == sec)
13542 break;
13543 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13544 r_symndx = STN_UNDEF;
727fc41e 13545 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13546 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13547 rel->r_addend -= (local_syms[r_symndx].st_value
13548 + sec->output_offset
13549 + sec->output_section->vma);
13550
13551 r_type = R_PPC64_TPREL16_LO;
13552 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13553 rel->r_offset = offset + d_offset;
13554 /* Zap the reloc on the _tls_get_addr call too. */
13555 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13556 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13557 insn2 = 0x38630000; /* addi 3,3,0 */
13558 insn3 = bfd_get_32 (output_bfd,
13559 contents + offset + 4);
13560 if (insn3 == NOP
13561 || insn3 == CROR_151515 || insn3 == CROR_313131)
13562 {
13563 rel->r_offset += 4;
13564 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13565 insn2 = NOP;
13566 }
13567 bfd_put_32 (output_bfd, insn2, contents + offset);
13568 rel--;
13569 continue;
13570 }
13571 break;
13572
411e1bfb 13573 case R_PPC64_DTPMOD64:
951fd09b
AM		 13574 if (rel + 1 < relend
13575 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13576 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13577 {
951fd09b
AM		 13578 if ((tls_mask & TLS_GD) == 0)
13579 {
13580 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13581 if ((tls_mask & TLS_TPRELGD) != 0)
13582 r_type = R_PPC64_TPREL64;
13583 else
13584 {
4ce794b7 13585 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13586 r_type = R_PPC64_NONE;
13587 }
13588 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13589 }
13590 }
13591 else
13592 {
13593 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13594 {
4ce794b7 13595 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13596 r_type = R_PPC64_NONE;
951fd09b 13597 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13598 }
411e1bfb
AM		 13599 }
13600 break;
13601
13602 case R_PPC64_TPREL64:
951fd09b 13603 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13604 {
13605 r_type = R_PPC64_NONE;
13606 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13607 }
13608 break;
52a82034
AM		 13609
13610 case R_PPC64_REL16_HA:
13611 /* If we are generating a non-PIC executable, edit
13612 . 0: addis 2,12,.TOC.-0b@ha
13613 . addi 2,2,.TOC.-0b@l
13614 used by ELFv2 global entry points to set up r2, to
13615 . lis 2,.TOC.@ha
13616 . addi 2,2,.TOC.@l
13617 if .TOC. is in range. */
13618 if (!info->shared
810d4e75 13619 && !info->traditional_format
52a82034
AM		 13620 && h != NULL && &h->elf == htab->elf.hgot
13621 && rel + 1 < relend
13622 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13623 && rel[1].r_offset == rel->r_offset + 4
13624 && rel[1].r_addend == rel->r_addend + 4
13625 && relocation + 0x80008000 <= 0xffffffff)
13626 {
13627 unsigned int insn1, insn2;
13628 bfd_vma offset = rel->r_offset - d_offset;
13629 insn1 = bfd_get_32 (output_bfd, contents + offset);
13630 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13631 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13632 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13633 {
13634 r_type = R_PPC64_ADDR16_HA;
13635 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13636 rel->r_addend -= d_offset;
13637 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13638 rel[1].r_addend -= d_offset + 4;
13639 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13640 }
13641 }
13642 break;
411e1bfb
AM		 13643 }
13644
13645 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 13646 insn = 0;
b25116a9
AM		 13647 max_br_offset = 1 << 25;
13648 addend = rel->r_addend;
bc30df16 13649 reloc_dest = DEST_NORMAL;
65f38f15 13650 switch (r_type)
5bd4f169
AM		 13651 {
13652 default:
65f38f15 13653 break;
5bd4f169 13654
3b421ab3
AM		 13655 case R_PPC64_TOCSAVE:
13656 if (relocation + addend == (rel->r_offset
13657 + input_section->output_offset
13658 + input_section->output_section->vma)
13659 && tocsave_find (htab, NO_INSERT,
13660 &local_syms, rel, input_bfd))
13661 {
13662 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13663 if (insn == NOP
13664 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 13665 bfd_put_32 (input_bfd,
13666 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 13667 contents + rel->r_offset);
13668 }
13669 break;
13670
65f38f15
AM		 13671 /* Branch taken prediction relocations. */
13672 case R_PPC64_ADDR14_BRTAKEN:
13673 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 13674 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13675 /* Fall thru. */
65f38f15 13676
86c76c7b 13677 /* Branch not taken prediction relocations. */
65f38f15
AM		 13678 case R_PPC64_ADDR14_BRNTAKEN:
13679 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 13680 insn |= bfd_get_32 (output_bfd,
13681 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 13682 /* Fall thru. */
86c76c7b 13683
b25116a9
AM		 13684 case R_PPC64_REL14:
13685 max_br_offset = 1 << 15;
13686 /* Fall thru. */
5bd4f169 13687
65f38f15 13688 case R_PPC64_REL24:
ad8e1ba5
AM		 13689 /* Calls to functions with a different TOC, such as calls to
13690 shared objects, need to alter the TOC pointer. This is
13691 done using a linkage stub. A REL24 branching to these
13692 linkage stubs needs to be followed by a nop, as the nop
13693 will be replaced with an instruction to restore the TOC
13694 base pointer. */
8387904d 13695 fdh = h;
b31867b6
AM		 13696 if (h != NULL
13697 && h->oh != NULL
13698 && h->oh->is_func_descriptor)
13699 fdh = ppc_follow_link (h->oh);
31c76678
DK		 13700 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13701 htab);
6abec6bc 13702 if (stub_entry != NULL
ad8e1ba5 13703 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 13704 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 13705 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13706 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 13707 {
b25116a9 13708 bfd_boolean can_plt_call = FALSE;
721956f4 13709
ba8ca3e7
AM		 13710 /* All of these stubs will modify r2, so there must be a
13711 branch and link followed by a nop. The nop is
13712 replaced by an insn to restore r2. */
eea6121a 13713 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 13714 {
ba8ca3e7
AM		 13715 unsigned long br;
13716
13717 br = bfd_get_32 (input_bfd,
13718 contents + rel->r_offset);
13719 if ((br & 1) != 0)
41bd81ab 13720 {
ba8ca3e7
AM		 13721 unsigned long nop;
13722
13723 nop = bfd_get_32 (input_bfd,
13724 contents + rel->r_offset + 4);
13725 if (nop == NOP
13726 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 13727 {
ba8ca3e7
AM		 13728 if (h != NULL
13729 && (h == htab->tls_get_addr_fd
13730 || h == htab->tls_get_addr)
e7d1c40c 13731 && !htab->params->no_tls_get_addr_opt)
ba8ca3e7
AM		 13732 {
13733 /* Special stub used, leave nop alone. */
13734 }
13735 else
a078d95a
AM		 13736 bfd_put_32 (input_bfd,
13737 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 13738 contents + rel->r_offset + 4);
13739 can_plt_call = TRUE;
a7f2871e 13740 }
41bd81ab 13741 }
5bd4f169 13742 }
721956f4 13743
ba8ca3e7 13744 if (!can_plt_call && h != NULL)
721956f4 13745 {
ba8ca3e7
AM		 13746 const char *name = h->elf.root.root.string;
13747
13748 if (*name == '.')
13749 ++name;
13750
13751 if (strncmp (name, "__libc_start_main", 17) == 0
13752 && (name[17] == 0 || name[17] == '@'))
6ab189d5 13753 {
ba8ca3e7
AM		 13754 /* Allow crt1 branch to go via a toc adjusting
13755 stub. Other calls that never return could do
13756 the same, if we could detect such. */
b25116a9 13757 can_plt_call = TRUE;
6ab189d5 13758 }
ba8ca3e7
AM		 13759 }
13760
13761 if (!can_plt_call)
13762 {
13763 /* g++ as of 20130507 emits self-calls without a
13764 following nop. This is arguably wrong since we
13765 have conflicting information. On the one hand a
13766 global symbol and on the other a local call
13767 sequence, but don't error for this special case.
13768 It isn't possible to cheaply verify we have
13769 exactly such a call. Allow all calls to the same
13770 section. */
13771 asection *code_sec = sec;
13772
13773 if (get_opd_info (sec) != NULL)
ad8e1ba5 13774 {
ba8ca3e7
AM		 13775 bfd_vma off = (relocation + addend
13776 - sec->output_section->vma
13777 - sec->output_offset);
bc30df16 13778
ba8ca3e7 13779 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 13780 }
ba8ca3e7
AM		 13781 if (code_sec == input_section)
13782 can_plt_call = TRUE;
13783 }
13784
13785 if (!can_plt_call)
13786 {
13787 info->callbacks->einfo
13788 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
1a1fb627 13789 "recompile with -fPIC\n"),
ba8ca3e7
AM		 13790 input_bfd, input_section, rel->r_offset, sym_name);
13791
13792 bfd_set_error (bfd_error_bad_value);
13793 ret = FALSE;
721956f4
AM		 13794 }
13795
b25116a9 13796 if (can_plt_call
794e51c0
AM		 13797 && (stub_entry->stub_type == ppc_stub_plt_call
13798 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13799 unresolved_reloc = FALSE;
13800 }
13801
6abec6bc
AM		 13802 if ((stub_entry == NULL
13803 || stub_entry->stub_type == ppc_stub_long_branch
13804 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13805 && get_opd_info (sec) != NULL)
13806 {
13807 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13808 bfd_vma off = (relocation + addend
13809 - sec->output_section->vma
13810 - sec->output_offset);
aef36ac1 13811 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13812 if (dest != (bfd_vma) -1)
13813 {
13814 relocation = dest;
13815 addend = 0;
bc30df16 13816 reloc_dest = DEST_OPD;
8387904d
AM		 13817 }
13818 }
13819
b25116a9
AM		 13820 /* If the branch is out of reach we ought to have a long
13821 branch stub. */
13822 from = (rel->r_offset
13823 + input_section->output_offset
13824 + input_section->output_section->vma);
13825
6911b7dc
AM		 13826 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13827 ? fdh->elf.other
13828 : sym->st_other);
13829
6abec6bc
AM		 13830 if (stub_entry != NULL
13831 && (stub_entry->stub_type == ppc_stub_long_branch
13832 || stub_entry->stub_type == ppc_stub_plt_branch)
13833 && (r_type == R_PPC64_ADDR14_BRTAKEN
13834 || r_type == R_PPC64_ADDR14_BRNTAKEN
13835 || (relocation + addend - from + max_br_offset
13836 < 2 * max_br_offset)))
13837 /* Don't use the stub if this branch is in range. */
13838 stub_entry = NULL;
b25116a9
AM		 13839
13840 if (stub_entry != NULL)
13841 {
13842 /* Munge up the value and addend so that we call the stub
13843 rather than the procedure directly. */
13844 relocation = (stub_entry->stub_offset
13845 + stub_entry->stub_sec->output_offset
13846 + stub_entry->stub_sec->output_section->vma);
13847 addend = 0;
bc30df16 13848 reloc_dest = DEST_STUB;
3b421ab3 13849
794e51c0
AM		 13850 if ((stub_entry->stub_type == ppc_stub_plt_call
13851 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13852 && (ALWAYS_EMIT_R2SAVE
13853 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13854 && rel + 1 < relend
13855 && rel[1].r_offset == rel->r_offset + 4
13856 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13857 relocation += 4;
b25116a9
AM		 13858 }
13859
13860 if (insn != 0)
13861 {
794e51c0 13862 if (is_isa_v2)
721956f4 13863 {
b25116a9
AM		 13864 /* Set 'a' bit. This is 0b00010 in BO field for branch
13865 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13866 for branch on CTR insns (BO == 1a00t or 1a01t). */
13867 if ((insn & (0x14 << 21)) == (0x04 << 21))
13868 insn |= 0x02 << 21;
13869 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13870 insn |= 0x08 << 21;
13871 else
13872 break;
13873 }
13874 else
13875 {
13876 /* Invert 'y' bit if not the default. */
4cc603a5 13877 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13878 insn ^= 0x01 << 21;
721956f4 13879 }
b25116a9
AM		 13880
13881 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13882 }
e86ce104 13883
06da1e8e
AM		 13884 /* NOP out calls to undefined weak functions.
13885 We can thus call a weak function without first
13886 checking whether the function is defined. */
b25116a9 13887 else if (h != NULL
039b3fef 13888 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13889 && h->elf.dynindx == -1
b25116a9
AM		 13890 && r_type == R_PPC64_REL24
13891 && relocation == 0
4cc603a5 13892 && addend == 0)
e86ce104 13893 {
06da1e8e
AM		 13894 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13895 continue;
e86ce104 13896 }
65f38f15
AM		 13897 break;
13898 }
5bd4f169 13899
65f38f15 13900 /* Set `addend'. */
411e1bfb 13901 tls_type = 0;
65f38f15
AM		 13902 switch (r_type)
13903 {
13904 default:
25f53a85 13905 info->callbacks->einfo
bc30df16 13906 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13907 input_bfd, (int) r_type, sym_name);
5bd4f169 13908
65f38f15 13909 bfd_set_error (bfd_error_bad_value);
b34976b6 13910 ret = FALSE;
65f38f15 13911 continue;
5bd4f169 13912
65f38f15 13913 case R_PPC64_NONE:
411e1bfb 13914 case R_PPC64_TLS:
727fc41e
AM		 13915 case R_PPC64_TLSGD:
13916 case R_PPC64_TLSLD:
3b421ab3 13917 case R_PPC64_TOCSAVE:
04c9666a
AM		 13918 case R_PPC64_GNU_VTINHERIT:
13919 case R_PPC64_GNU_VTENTRY:
65f38f15 13920 continue;
5bd4f169
AM		 13921
13922 /* GOT16 relocations. Like an ADDR16 using the symbol's
13923 address in the GOT as relocation value instead of the
411e1bfb 13924 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13925 symbol and put the symbol value there. */
411e1bfb
AM		 13926 case R_PPC64_GOT_TLSGD16:
13927 case R_PPC64_GOT_TLSGD16_LO:
13928 case R_PPC64_GOT_TLSGD16_HI:
13929 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13930 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 13931 goto dogot;
13932
13933 case R_PPC64_GOT_TLSLD16:
13934 case R_PPC64_GOT_TLSLD16_LO:
13935 case R_PPC64_GOT_TLSLD16_HI:
13936 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13937 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 13938 goto dogot;
13939
13940 case R_PPC64_GOT_TPREL16_DS:
13941 case R_PPC64_GOT_TPREL16_LO_DS:
13942 case R_PPC64_GOT_TPREL16_HI:
13943 case R_PPC64_GOT_TPREL16_HA:
13944 tls_type = TLS_TLS | TLS_TPREL;
13945 goto dogot;
13946
13947 case R_PPC64_GOT_DTPREL16_DS:
13948 case R_PPC64_GOT_DTPREL16_LO_DS:
13949 case R_PPC64_GOT_DTPREL16_HI:
13950 case R_PPC64_GOT_DTPREL16_HA:
13951 tls_type = TLS_TLS | TLS_DTPREL;
13952 goto dogot;
13953
65f38f15
AM		 13954 case R_PPC64_GOT16:
13955 case R_PPC64_GOT16_LO:
13956 case R_PPC64_GOT16_HI:
13957 case R_PPC64_GOT16_HA:
13958 case R_PPC64_GOT16_DS:
13959 case R_PPC64_GOT16_LO_DS:
411e1bfb 13960 dogot:
5bd4f169
AM		 13961 {
13962 /* Relocation is to the entry for this symbol in the global
13963 offset table. */
e717da7e 13964 asection *got;
d881513a 13965 bfd_vma *offp;
5bd4f169 13966 bfd_vma off;
d881513a 13967 unsigned long indx = 0;
927be08e 13968 struct got_entry *ent;
65f38f15 13969
d881513a
AM		 13970 if (tls_type == (TLS_TLS | TLS_LD)
13971 && (h == NULL
f5385ebf 13972 || !h->elf.def_dynamic))
927be08e 13973 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13974 else
5bd4f169 13975 {
5bd4f169 13976
d881513a
AM		 13977 if (h != NULL)
13978 {
13979 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 13980 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13981 &h->elf)
d881513a 13982 || (info->shared
afe397ea 13983 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 13984 /* This is actually a static link, or it is a
13985 -Bsymbolic link and the symbol is defined
13986 locally, or the symbol was forced to be local
13987 because of a version file. */
13988 ;
13989 else
13990 {
14acf4dc 13991 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 13992 indx = h->elf.dynindx;
d881513a
AM		 13993 unresolved_reloc = FALSE;
13994 }
039b3fef 13995 ent = h->elf.got.glist;
d881513a 13996 }
411e1bfb 13997 else
5bd4f169 13998 {
d881513a
AM		 13999 if (local_got_ents == NULL)
14000 abort ();
14001 ent = local_got_ents[r_symndx];
5bd4f169 14002 }
d881513a
AM		 14003
14004 for (; ent != NULL; ent = ent->next)
31c76678 14005 if (ent->addend == orig_rel.r_addend
e717da7e 14006 && ent->owner == input_bfd
d881513a
AM		 14007 && ent->tls_type == tls_type)
14008 break;
5bd4f169 14009 }
411e1bfb 14010
927be08e
AM		 14011 if (ent == NULL)
14012 abort ();
14013 if (ent->is_indirect)
14014 ent = ent->got.ent;
14015 offp = &ent->got.offset;
14016 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 14017 if (got == NULL)
14018 abort ();
14019
411e1bfb
AM		 14020 /* The offset must always be a multiple of 8. We use the
14021 least significant bit to record whether we have already
14022 processed this entry. */
d881513a 14023 off = *offp;
411e1bfb
AM		 14024 if ((off & 1) != 0)
14025 off &= ~1;
5bd4f169
AM		 14026 else
14027 {
411e1bfb
AM		 14028 /* Generate relocs for the dynamic linker, except in
14029 the case of TLSLD where we'll use one entry per
14030 module. */
25f23106
AM		 14031 asection *relgot;
14032 bfd_boolean ifunc;
e717da7e 14033
d881513a 14034 *offp = off | 1;
25f23106
AM		 14035 relgot = NULL;
14036 ifunc = (h != NULL
14037 ? h->elf.type == STT_GNU_IFUNC
14038 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14039 if (ifunc)
33e44f2e 14040 relgot = htab->elf.irelplt;
19e08130
AM		 14041 else if ((info->shared || indx != 0)
14042 && (h == NULL
14043 || (tls_type == (TLS_TLS | TLS_LD)
14044 && !h->elf.def_dynamic)
14045 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14046 || h->elf.root.type != bfd_link_hash_undefweak))
14047 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14048 if (relgot != NULL)
5bd4f169 14049 {
e717da7e
AM		 14050 outrel.r_offset = (got->output_section->vma
14051 + got->output_offset
411e1bfb 14052 + off);
4cc603a5 14053 outrel.r_addend = addend;
d881513a 14054 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14055 {
411e1bfb 14056 outrel.r_addend = 0;
e515b051 14057 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14058 if (tls_type == (TLS_TLS | TLS_GD))
14059 {
e717da7e
AM		 14060 loc = relgot->contents;
14061 loc += (relgot->reloc_count++
d881513a
AM		 14062 * sizeof (Elf64_External_Rela));
14063 bfd_elf64_swap_reloca_out (output_bfd,
14064 &outrel, loc);
e515b051 14065 outrel.r_offset += 8;
4cc603a5 14066 outrel.r_addend = addend;
d881513a
AM		 14067 outrel.r_info
14068 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14069 }
411e1bfb 14070 }
951fd09b 14071 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14072 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14073 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14074 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14075 else if (indx != 0)
14076 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14077 else
81407a69 14078 {
25f23106
AM		 14079 if (ifunc)
14080 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14081 else
14082 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14083
14084 /* Write the .got section contents for the sake
14085 of prelink. */
e717da7e 14086 loc = got->contents + off;
23fbd6fa
JJ		 14087 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14088 loc);
81407a69 14089 }
81407a69
AM		 14090
14091 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14092 {
14093 outrel.r_addend += relocation;
14094 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 14095 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 14096 }
e717da7e
AM		 14097 loc = relgot->contents;
14098 loc += (relgot->reloc_count++
411e1bfb
AM		 14099 * sizeof (Elf64_External_Rela));
14100 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14101 }
14102
ad8e1ba5 14103 /* Init the .got section contents here if we're not
81407a69 14104 emitting a reloc. */
d881513a 14105 else
411e1bfb 14106 {
4cc603a5 14107 relocation += addend;
7b609f53
AM		 14108 if (tls_type == (TLS_TLS | TLS_LD))
14109 relocation = 1;
14110 else if (tls_type != 0)
411e1bfb 14111 {
e1918d23 14112 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 14113 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14114 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 14115
7b609f53
AM		 14116 if (tls_type == (TLS_TLS | TLS_GD))
14117 {
14118 bfd_put_64 (output_bfd, relocation,
e717da7e 14119 got->contents + off + 8);
7b609f53
AM		 14120 relocation = 1;
14121 }
411e1bfb 14122 }
7b609f53 14123
411e1bfb 14124 bfd_put_64 (output_bfd, relocation,
e717da7e 14125 got->contents + off);
5bd4f169
AM		 14126 }
14127 }
14128
65f38f15
AM		 14129 if (off >= (bfd_vma) -2)
14130 abort ();
14131
bf102f86
AM		 14132 relocation = got->output_section->vma + got->output_offset + off;
14133 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 14134 }
65f38f15
AM		 14135 break;
14136
14137 case R_PPC64_PLT16_HA:
14138 case R_PPC64_PLT16_HI:
14139 case R_PPC64_PLT16_LO:
14140 case R_PPC64_PLT32:
14141 case R_PPC64_PLT64:
14142 /* Relocation is to the entry for this symbol in the
14143 procedure linkage table. */
14144
14145 /* Resolve a PLT reloc against a local symbol directly,
14146 without using the procedure linkage table. */
14147 if (h == NULL)
14148 break;
14149
411e1bfb
AM		 14150 /* It's possible that we didn't make a PLT entry for this
14151 symbol. This happens when statically linking PIC code,
14152 or when using -Bsymbolic. Go find a match if there is a
14153 PLT entry. */
33e44f2e 14154 if (htab->elf.splt != NULL)
65f38f15 14155 {
411e1bfb 14156 struct plt_entry *ent;
039b3fef 14157 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14158 if (ent->plt.offset != (bfd_vma) -1
14159 && ent->addend == orig_rel.r_addend)
411e1bfb 14160 {
33e44f2e
AM		 14161 relocation = (htab->elf.splt->output_section->vma
14162 + htab->elf.splt->output_offset
411e1bfb
AM		 14163 + ent->plt.offset);
14164 unresolved_reloc = FALSE;
a345bc8d 14165 break;
411e1bfb 14166 }
65f38f15 14167 }
65f38f15 14168 break;
5bd4f169 14169
0b13192e
AM		 14170 case R_PPC64_TOC:
14171 /* Relocation value is TOC base. */
14172 relocation = TOCstart;
cf35638d 14173 if (r_symndx == STN_UNDEF)
0b13192e 14174 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 14175 else if (unresolved_reloc)
14176 ;
14177 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 14178 relocation += htab->stub_group[sec->id].toc_off;
14179 else
14180 unresolved_reloc = TRUE;
ab96bf03 14181 goto dodyn;
0b13192e 14182
5bd4f169
AM		 14183 /* TOC16 relocs. We want the offset relative to the TOC base,
14184 which is the address of the start of the TOC plus 0x8000.
14185 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14186 in this order. */
65f38f15
AM		 14187 case R_PPC64_TOC16:
14188 case R_PPC64_TOC16_LO:
14189 case R_PPC64_TOC16_HI:
14190 case R_PPC64_TOC16_DS:
14191 case R_PPC64_TOC16_LO_DS:
14192 case R_PPC64_TOC16_HA:
ad8e1ba5 14193 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 14194 break;
14195
14196 /* Relocate against the beginning of the section. */
65f38f15
AM		 14197 case R_PPC64_SECTOFF:
14198 case R_PPC64_SECTOFF_LO:
14199 case R_PPC64_SECTOFF_HI:
14200 case R_PPC64_SECTOFF_DS:
14201 case R_PPC64_SECTOFF_LO_DS:
14202 case R_PPC64_SECTOFF_HA:
4ce794b7 14203 if (sec != NULL)
65f38f15 14204 addend -= sec->output_section->vma;
5bd4f169
AM		 14205 break;
14206
25f23106
AM		 14207 case R_PPC64_REL16:
14208 case R_PPC64_REL16_LO:
14209 case R_PPC64_REL16_HI:
14210 case R_PPC64_REL16_HA:
14211 break;
14212
721956f4
AM		 14213 case R_PPC64_REL14:
14214 case R_PPC64_REL14_BRNTAKEN:
14215 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14216 case R_PPC64_REL24:
14217 break;
14218
411e1bfb
AM		 14219 case R_PPC64_TPREL16:
14220 case R_PPC64_TPREL16_LO:
14221 case R_PPC64_TPREL16_HI:
14222 case R_PPC64_TPREL16_HA:
14223 case R_PPC64_TPREL16_DS:
14224 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14225 case R_PPC64_TPREL16_HIGH:
14226 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14227 case R_PPC64_TPREL16_HIGHER:
14228 case R_PPC64_TPREL16_HIGHERA:
14229 case R_PPC64_TPREL16_HIGHEST:
14230 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14231 if (h != NULL
14232 && h->elf.root.type == bfd_link_hash_undefweak
14233 && h->elf.dynindx == -1)
14234 {
14235 /* Make this relocation against an undefined weak symbol
14236 resolve to zero. This is really just a tweak, since
14237 code using weak externs ought to check that they are
14238 defined before using them. */
14239 bfd_byte *p = contents + rel->r_offset - d_offset;
14240
14241 insn = bfd_get_32 (output_bfd, p);
14242 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14243 if (insn != 0)
14244 bfd_put_32 (output_bfd, insn, p);
14245 break;
14246 }
e1918d23 14247 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14248 if (info->shared)
14249 /* The TPREL16 relocs shouldn't really be used in shared
14250 libs as they will result in DT_TEXTREL being set, but
14251 support them anyway. */
14252 goto dodyn;
14253 break;
14254
14255 case R_PPC64_DTPREL16:
14256 case R_PPC64_DTPREL16_LO:
14257 case R_PPC64_DTPREL16_HI:
14258 case R_PPC64_DTPREL16_HA:
14259 case R_PPC64_DTPREL16_DS:
14260 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14261 case R_PPC64_DTPREL16_HIGH:
14262 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14263 case R_PPC64_DTPREL16_HIGHER:
14264 case R_PPC64_DTPREL16_HIGHERA:
14265 case R_PPC64_DTPREL16_HIGHEST:
14266 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 14267 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14268 break;
14269
45965137
AM		 14270 case R_PPC64_ADDR64_LOCAL:
14271 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14272 ? h->elf.other
14273 : sym->st_other);
14274 break;
14275
e515b051
AM		 14276 case R_PPC64_DTPMOD64:
14277 relocation = 1;
14278 addend = 0;
14279 goto dodyn;
14280
411e1bfb 14281 case R_PPC64_TPREL64:
e1918d23 14282 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14283 goto dodyn;
14284
14285 case R_PPC64_DTPREL64:
e1918d23 14286 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14287 /* Fall thru */
14288
65f38f15
AM		 14289 /* Relocations that may need to be propagated if this is a
14290 dynamic object. */
04c9666a 14291 case R_PPC64_REL30:
65f38f15
AM		 14292 case R_PPC64_REL32:
14293 case R_PPC64_REL64:
14294 case R_PPC64_ADDR14:
14295 case R_PPC64_ADDR14_BRNTAKEN:
14296 case R_PPC64_ADDR14_BRTAKEN:
14297 case R_PPC64_ADDR16:
14298 case R_PPC64_ADDR16_DS:
14299 case R_PPC64_ADDR16_HA:
14300 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14301 case R_PPC64_ADDR16_HIGH:
14302 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14303 case R_PPC64_ADDR16_HIGHER:
14304 case R_PPC64_ADDR16_HIGHERA:
14305 case R_PPC64_ADDR16_HIGHEST:
14306 case R_PPC64_ADDR16_HIGHESTA:
14307 case R_PPC64_ADDR16_LO:
14308 case R_PPC64_ADDR16_LO_DS:
14309 case R_PPC64_ADDR24:
65f38f15
AM		 14310 case R_PPC64_ADDR32:
14311 case R_PPC64_ADDR64:
14312 case R_PPC64_UADDR16:
14313 case R_PPC64_UADDR32:
14314 case R_PPC64_UADDR64:
411e1bfb 14315 dodyn:
5d1634d7 14316 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14317 break;
14318
41bd81ab
AM		 14319 if (NO_OPD_RELOCS && is_opd)
14320 break;
14321
65f38f15 14322 if ((info->shared
4e795f50 14323 && (h == NULL
039b3fef
AM		 14324 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14325 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14326 && (must_be_dyn_reloc (info, r_type)
039b3fef 14327 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 14328 || (ELIMINATE_COPY_RELOCS
14329 && !info->shared
65f38f15 14330 && h != NULL
039b3fef 14331 && h->elf.dynindx != -1
f5385ebf 14332 && !h->elf.non_got_ref
25f23106
AM		 14333 && !h->elf.def_regular)
14334 || (!info->shared
14335 && (h != NULL
14336 ? h->elf.type == STT_GNU_IFUNC
14337 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14338 {
b34976b6 14339 bfd_boolean skip, relocate;
65f38f15 14340 asection *sreloc;
1cf1f670 14341 bfd_vma out_off;
65f38f15
AM		 14342
14343 /* When generating a dynamic object, these relocations
14344 are copied into the output file to be resolved at run
14345 time. */
14346
b34976b6
AM		 14347 skip = FALSE;
14348 relocate = FALSE;
65f38f15 14349
1cf1f670
AM		 14350 out_off = _bfd_elf_section_offset (output_bfd, info,
14351 input_section, rel->r_offset);
14352 if (out_off == (bfd_vma) -1)
b34976b6 14353 skip = TRUE;
1cf1f670 14354 else if (out_off == (bfd_vma) -2)
b34976b6 14355 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14356 out_off += (input_section->output_section->vma
14357 + input_section->output_offset);
14358 outrel.r_offset = out_off;
411e1bfb 14359 outrel.r_addend = rel->r_addend;
65f38f15 14360
1cf1f670
AM		 14361 /* Optimize unaligned reloc use. */
14362 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14363 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14364 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14365 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14366 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14367 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14368 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14369 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14370 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14371
65f38f15 14372 if (skip)
0bb2d96a 14373 memset (&outrel, 0, sizeof outrel);
afe397ea 14374 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14375 && !is_opd
14376 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14377 {
14378 BFD_ASSERT (h->elf.dynindx != -1);
14379 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14380 }
65f38f15
AM		 14381 else
14382 {
41bd81ab
AM		 14383 /* This symbol is local, or marked to become local,
14384 or this is an opd section reloc which must point
14385 at a local function. */
65f38f15 14386 outrel.r_addend += relocation;
e86ce104 14387 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14388 {
3fad3c7c 14389 if (is_opd && h != NULL)
afbe61cf
AM		 14390 {
14391 /* Lie about opd entries. This case occurs
14392 when building shared libraries and we
14393 reference a function in another shared
3fad3c7c
AM		 14394 lib. The same thing happens for a weak
14395 definition in an application that's
14396 overridden by a strong definition in a
14397 shared lib. (I believe this is a generic
14398 bug in binutils handling of weak syms.)
14399 In these cases we won't use the opd
1e2f5b6e 14400 entry in this lib. */
b34976b6 14401 unresolved_reloc = FALSE;
afbe61cf 14402 }
25f23106
AM		 14403 if (!is_opd
14404 && r_type == R_PPC64_ADDR64
14405 && (h != NULL
14406 ? h->elf.type == STT_GNU_IFUNC
14407 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14408 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14409 else
14410 {
14411 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14412
25f23106
AM		 14413 /* We need to relocate .opd contents for ld.so.
14414 Prelink also wants simple and consistent rules
14415 for relocs. This make all RELATIVE relocs have
14416 *r_offset equal to r_addend. */
14417 relocate = TRUE;
14418 }
65f38f15
AM		 14419 }
14420 else
14421 {
14422 long indx = 0;
14423
25f23106
AM		 14424 if (h != NULL
14425 ? h->elf.type == STT_GNU_IFUNC
14426 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14427 {
25f53a85 14428 info->callbacks->einfo
bc30df16
AM		 14429 (_("%P: %H: %s for indirect "
14430 "function `%T' unsupported\n"),
25f53a85 14431 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14432 ppc64_elf_howto_table[r_type]->name,
14433 sym_name);
14434 ret = FALSE;
14435 }
cf35638d 14436 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14437 ;
14438 else if (sec == NULL || sec->owner == NULL)
14439 {
14440 bfd_set_error (bfd_error_bad_value);
b34976b6 14441 return FALSE;
65f38f15
AM		 14442 }
14443 else
14444 {
14445 asection *osec;
14446
14447 osec = sec->output_section;
14448 indx = elf_section_data (osec)->dynindx;
14449
74541ad4
AM		 14450 if (indx == 0)
14451 {
14452 if ((osec->flags & SEC_READONLY) == 0
14453 && htab->elf.data_index_section != NULL)
14454 osec = htab->elf.data_index_section;
14455 else
14456 osec = htab->elf.text_index_section;
14457 indx = elf_section_data (osec)->dynindx;
14458 }
14459 BFD_ASSERT (indx != 0);
14460
65f38f15
AM		 14461 /* We are turning this relocation into one
14462 against a section symbol, so subtract out
14463 the output section's address but not the
14464 offset of the input section in the output
14465 section. */
14466 outrel.r_addend -= osec->vma;
14467 }
14468
14469 outrel.r_info = ELF64_R_INFO (indx, r_type);
14470 }
14471 }
14472
14473 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14474 if (h != NULL
14475 ? h->elf.type == STT_GNU_IFUNC
14476 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14477 sreloc = htab->elf.irelplt;
65f38f15
AM		 14478 if (sreloc == NULL)
14479 abort ();
14480
dfbb6ac9
AM		 14481 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14482 >= sreloc->size)
14483 abort ();
947216bf
AM		 14484 loc = sreloc->contents;
14485 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14486 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14487
14488 /* If this reloc is against an external symbol, it will
14489 be computed at runtime, so there's no need to do
81407a69
AM		 14490 anything now. However, for the sake of prelink ensure
14491 that the section contents are a known value. */
65f38f15 14492 if (! relocate)
81407a69
AM		 14493 {
14494 unresolved_reloc = FALSE;
14495 /* The value chosen here is quite arbitrary as ld.so
14496 ignores section contents except for the special
14497 case of .opd where the contents might be accessed
14498 before relocation. Choose zero, as that won't
14499 cause reloc overflow. */
14500 relocation = 0;
14501 addend = 0;
14502 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14503 to improve backward compatibility with older
14504 versions of ld. */
14505 if (r_type == R_PPC64_ADDR64)
14506 addend = outrel.r_addend;
14507 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14508 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14509 addend = (input_section->output_section->vma
14510 + input_section->output_offset
14511 + rel->r_offset);
81407a69 14512 }
65f38f15 14513 }
5bd4f169
AM		 14514 break;
14515
65f38f15
AM		 14516 case R_PPC64_COPY:
14517 case R_PPC64_GLOB_DAT:
14518 case R_PPC64_JMP_SLOT:
25f23106 14519 case R_PPC64_JMP_IREL:
65f38f15
AM		 14520 case R_PPC64_RELATIVE:
14521 /* We shouldn't ever see these dynamic relocs in relocatable
14522 files. */
ae9a127f 14523 /* Fall through. */
65f38f15
AM		 14524
14525 case R_PPC64_PLTGOT16:
14526 case R_PPC64_PLTGOT16_DS:
14527 case R_PPC64_PLTGOT16_HA:
14528 case R_PPC64_PLTGOT16_HI:
14529 case R_PPC64_PLTGOT16_LO:
14530 case R_PPC64_PLTGOT16_LO_DS:
14531 case R_PPC64_PLTREL32:
14532 case R_PPC64_PLTREL64:
14533 /* These ones haven't been implemented yet. */
14534
25f53a85 14535 info->callbacks->einfo
bc30df16 14536 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14537 input_bfd,
4ce794b7 14538 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14539
14540 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14541 ret = FALSE;
5bd4f169 14542 continue;
65f38f15 14543 }
5bd4f169 14544
67f0cbdb
AM		 14545 /* Multi-instruction sequences that access the TOC can be
14546 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14547 to nop; addi rb,r2,x; */
14548 switch (r_type)
14549 {
14550 default:
14551 break;
14552
14553 case R_PPC64_GOT_TLSLD16_HI:
14554 case R_PPC64_GOT_TLSGD16_HI:
14555 case R_PPC64_GOT_TPREL16_HI:
14556 case R_PPC64_GOT_DTPREL16_HI:
14557 case R_PPC64_GOT16_HI:
14558 case R_PPC64_TOC16_HI:
14559 /* These relocs would only be useful if building up an
14560 offset to later add to r2, perhaps in an indexed
14561 addressing mode instruction. Don't try to optimize.
14562 Unfortunately, the possibility of someone building up an
14563 offset like this or even with the HA relocs, means that
14564 we need to check the high insn when optimizing the low
14565 insn. */
14566 break;
14567
14568 case R_PPC64_GOT_TLSLD16_HA:
14569 case R_PPC64_GOT_TLSGD16_HA:
14570 case R_PPC64_GOT_TPREL16_HA:
14571 case R_PPC64_GOT_DTPREL16_HA:
14572 case R_PPC64_GOT16_HA:
14573 case R_PPC64_TOC16_HA:
98528052 14574 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14575 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14576 {
14577 bfd_byte *p = contents + (rel->r_offset & ~3);
14578 bfd_put_32 (input_bfd, NOP, p);
14579 }
67f0cbdb
AM		 14580 break;
14581
14582 case R_PPC64_GOT_TLSLD16_LO:
14583 case R_PPC64_GOT_TLSGD16_LO:
14584 case R_PPC64_GOT_TPREL16_LO_DS:
14585 case R_PPC64_GOT_DTPREL16_LO_DS:
14586 case R_PPC64_GOT16_LO:
14587 case R_PPC64_GOT16_LO_DS:
14588 case R_PPC64_TOC16_LO:
14589 case R_PPC64_TOC16_LO_DS:
98528052 14590 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14591 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14592 {
14593 bfd_byte *p = contents + (rel->r_offset & ~3);
14594 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14595 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14596 {
14597 /* Transform addic to addi when we change reg. */
14598 insn &= ~((0x3f << 26) | (0x1f << 16));
14599 insn |= (14u << 26) | (2 << 16);
14600 }
14601 else
67f0cbdb 14602 {
98528052
AM		 14603 insn &= ~(0x1f << 16);
14604 insn |= 2 << 16;
67f0cbdb 14605 }
560c8763 14606 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14607 }
14608 break;
14609 }
14610
65f38f15 14611 /* Do any further special processing. */
b80eed39 14612 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14613 switch (r_type)
14614 {
14615 default:
14616 break;
14617
25f23106 14618 case R_PPC64_REL16_HA:
f9c6b907
AM		 14619 case R_PPC64_ADDR16_HA:
14620 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14621 case R_PPC64_ADDR16_HIGHERA:
14622 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14623 case R_PPC64_TOC16_HA:
14624 case R_PPC64_SECTOFF_HA:
411e1bfb 14625 case R_PPC64_TPREL16_HA:
f9c6b907 14626 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14627 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14628 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14629 case R_PPC64_DTPREL16_HA:
14630 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14631 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14632 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14633 /* It's just possible that this symbol is a weak symbol
14634 that's not actually defined anywhere. In that case,
14635 'sec' would be NULL, and we should leave the symbol
14636 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14637 if (sec == NULL)
14638 break;
14639 /* Fall thru */
14640
14641 case R_PPC64_GOT16_HA:
14642 case R_PPC64_PLTGOT16_HA:
14643 case R_PPC64_PLT16_HA:
14644 case R_PPC64_GOT_TLSGD16_HA:
14645 case R_PPC64_GOT_TLSLD16_HA:
14646 case R_PPC64_GOT_TPREL16_HA:
14647 case R_PPC64_GOT_DTPREL16_HA:
14648 /* Add 0x10000 if sign bit in 0:15 is set.
14649 Bits 0:15 are not used. */
14650 addend += 0x8000;
65f38f15
AM		 14651 break;
14652
14653 case R_PPC64_ADDR16_DS:
14654 case R_PPC64_ADDR16_LO_DS:
14655 case R_PPC64_GOT16_DS:
14656 case R_PPC64_GOT16_LO_DS:
14657 case R_PPC64_PLT16_LO_DS:
14658 case R_PPC64_SECTOFF_DS:
14659 case R_PPC64_SECTOFF_LO_DS:
14660 case R_PPC64_TOC16_DS:
14661 case R_PPC64_TOC16_LO_DS:
14662 case R_PPC64_PLTGOT16_DS:
14663 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14664 case R_PPC64_GOT_TPREL16_DS:
14665 case R_PPC64_GOT_TPREL16_LO_DS:
14666 case R_PPC64_GOT_DTPREL16_DS:
14667 case R_PPC64_GOT_DTPREL16_LO_DS:
14668 case R_PPC64_TPREL16_DS:
14669 case R_PPC64_TPREL16_LO_DS:
14670 case R_PPC64_DTPREL16_DS:
14671 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14672 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14673 mask = 3;
14674 /* If this reloc is against an lq insn, then the value must be
14675 a multiple of 16. This is somewhat of a hack, but the
14676 "correct" way to do this by defining _DQ forms of all the
14677 _DS relocs bloats all reloc switches in this file. It
14678 doesn't seem to make much sense to use any of these relocs
14679 in data, so testing the insn should be safe. */
494dac0c 14680 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14681 mask = 15;
14682 if (((relocation + addend) & mask) != 0)
65f38f15 14683 {
25f53a85 14684 info->callbacks->einfo
8de848d8 14685 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14686 input_bfd, input_section, rel->r_offset,
b80eed39 14687 howto->name,
adadcc0c 14688 mask + 1);
65f38f15 14689 bfd_set_error (bfd_error_bad_value);
b34976b6 14690 ret = FALSE;
65f38f15
AM		 14691 continue;
14692 }
14693 break;
5bd4f169
AM		 14694 }
14695
239e1f3a
AM		 14696 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14697 because such sections are not SEC_ALLOC and thus ld.so will
14698 not process them. */
65f38f15 14699 if (unresolved_reloc
239e1f3a 14700 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14701 && h->elf.def_dynamic)
14702 && _bfd_elf_section_offset (output_bfd, info, input_section,
14703 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14704 {
25f53a85 14705 info->callbacks->einfo
bc30df16 14706 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14707 input_bfd, input_section, rel->r_offset,
b80eed39 14708 howto->name,
039b3fef 14709 h->elf.root.root.string);
b34976b6 14710 ret = FALSE;
9c07fe7c 14711 }
5bd4f169 14712
b80eed39
AM		 14713 /* 16-bit fields in insns mostly have signed values, but a
14714 few insns have 16-bit unsigned values. Really, we should
14715 have different reloc types. */
14716 if (howto->complain_on_overflow != complain_overflow_dont
14717 && howto->dst_mask == 0xffff
14718 && (input_section->flags & SEC_CODE) != 0)
14719 {
14720 enum complain_overflow complain = complain_overflow_signed;
14721
14722 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14723 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14724 complain = complain_overflow_bitfield;
14725 else if (howto->rightshift == 0
14726 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14727 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14728 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14729 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14730 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14731 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14732 complain = complain_overflow_unsigned;
14733 if (howto->complain_on_overflow != complain)
14734 {
14735 alt_howto = *howto;
14736 alt_howto.complain_on_overflow = complain;
14737 howto = &alt_howto;
14738 }
14739 }
14740
14741 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14742 rel->r_offset, relocation, addend);
5bd4f169 14743
ef60b7ff 14744 if (r != bfd_reloc_ok)
5bd4f169 14745 {
bc30df16 14746 char *more_info = NULL;
b80eed39 14747 const char *reloc_name = howto->name;
bc30df16
AM		 14748
14749 if (reloc_dest != DEST_NORMAL)
14750 {
14751 more_info = bfd_malloc (strlen (reloc_name) + 8);
14752 if (more_info != NULL)
14753 {
14754 strcpy (more_info, reloc_name);
14755 strcat (more_info, (reloc_dest == DEST_OPD
14756 ? " (OPD)" : " (stub)"));
14757 reloc_name = more_info;
14758 }
14759 }
14760
cd27b276 14761 if (r == bfd_reloc_overflow)
5bd4f169 14762 {
cd27b276
AM		 14763 if (warned)
14764 continue;
14765 if (h != NULL
039b3fef 14766 && h->elf.root.type == bfd_link_hash_undefweak
b80eed39 14767 && howto->pc_relative)
5bd4f169
AM		 14768 {
14769 /* Assume this is a call protected by other code that
14770 detects the symbol is undefined. If this is the case,
14771 we can safely ignore the overflow. If not, the
14772 program is hosed anyway, and a little warning isn't
14773 going to help. */
14774
14775 continue;
14776 }
14777
ef60b7ff 14778 if (!((*info->callbacks->reloc_overflow)
bc30df16
AM		 14779 (info, &h->elf.root, sym_name,
14780 reloc_name, orig_rel.r_addend,
14781 input_bfd, input_section, rel->r_offset)))
b34976b6 14782 return FALSE;
ef60b7ff
AM		 14783 }
14784 else
14785 {
25f53a85 14786 info->callbacks->einfo
bc30df16 14787 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14788 input_bfd, input_section, rel->r_offset,
bc30df16 14789 reloc_name, sym_name, (int) r);
b34976b6 14790 ret = FALSE;
ef60b7ff 14791 }
bc30df16
AM		 14792 if (more_info != NULL)
14793 free (more_info);
5bd4f169 14794 }
5bd4f169
AM		 14795 }
14796
645ea6a9
AM		 14797 /* If we're emitting relocations, then shortly after this function
14798 returns, reloc offsets and addends for this section will be
14799 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14800 file rather than the input. Save a copy of the relocs for
14801 opd_entry_value. */
4cc603a5 14802 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 14803 {
14804 bfd_size_type amt;
14805 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14806 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14807 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14808 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14809 if (rel == NULL)
14810 return FALSE;
14811 memcpy (rel, relocs, amt);
14812 }
5bd4f169
AM		 14813 return ret;
14814}
14815
754021d0
AM		 14816/* Adjust the value of any local symbols in opd sections. */
14817
6e0b88f1 14818static int
754021d0
AM		 14819ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14820 const char *name ATTRIBUTE_UNUSED,
14821 Elf_Internal_Sym *elfsym,
14822 asection *input_sec,
14823 struct elf_link_hash_entry *h)
14824{
74f0fb50
AM		 14825 struct _opd_sec_data *opd;
14826 long adjust;
754021d0
AM		 14827 bfd_vma value;
14828
4025353c 14829 if (h != NULL)
6e0b88f1 14830 return 1;
4025353c 14831
74f0fb50
AM		 14832 opd = get_opd_info (input_sec);
14833 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14834 return 1;
754021d0
AM		 14835
14836 value = elfsym->st_value - input_sec->output_offset;
14837 if (!info->relocatable)
14838 value -= input_sec->output_section->vma;
14839
74f0fb50 14840 adjust = opd->adjust[value / 8];
4025353c 14841 if (adjust == -1)
6e0b88f1
AM		 14842 return 2;
14843
14844 elfsym->st_value += adjust;
14845 return 1;
754021d0
AM		 14846}
14847
5bd4f169
AM		 14848/* Finish up dynamic symbol handling. We set the contents of various
14849 dynamic sections here. */
14850
b34976b6 14851static bfd_boolean
4ce794b7
AM		 14852ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14853 struct bfd_link_info *info,
14854 struct elf_link_hash_entry *h,
ab6dce23 14855 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14856{
65f38f15 14857 struct ppc_link_hash_table *htab;
8387904d
AM		 14858 struct plt_entry *ent;
14859 Elf_Internal_Rela rela;
14860 bfd_byte *loc;
5bd4f169 14861
65f38f15 14862 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14863 if (htab == NULL)
14864 return FALSE;
5bd4f169 14865
8387904d
AM		 14866 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14867 if (ent->plt.offset != (bfd_vma) -1)
14868 {
14869 /* This symbol has an entry in the procedure linkage
14870 table. Set it up. */
e054468f
AM		 14871 if (!htab->elf.dynamic_sections_created
14872 || h->dynindx == -1)
14873 {
14874 BFD_ASSERT (h->type == STT_GNU_IFUNC
14875 && h->def_regular
14876 && (h->root.type == bfd_link_hash_defined
14877 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14878 rela.r_offset = (htab->elf.iplt->output_section->vma
14879 + htab->elf.iplt->output_offset
25f23106 14880 + ent->plt.offset);
ee67d69a
AM		 14881 if (htab->opd_abi)
14882 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14883 else
14884 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14885 rela.r_addend = (h->root.u.def.value
14886 + h->root.u.def.section->output_offset
14887 + h->root.u.def.section->output_section->vma
14888 + ent->addend);
33e44f2e
AM		 14889 loc = (htab->elf.irelplt->contents
14890 + (htab->elf.irelplt->reloc_count++
25f23106 14891 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14892 }
14893 else
14894 {
33e44f2e
AM		 14895 rela.r_offset = (htab->elf.splt->output_section->vma
14896 + htab->elf.splt->output_offset
25f23106 14897 + ent->plt.offset);
e054468f
AM		 14898 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14899 rela.r_addend = ent->addend;
33e44f2e 14900 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14901 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14902 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14903 }
8387904d 14904 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14905
14906 if (!htab->opd_abi)
14907 {
14908 if (!h->def_regular)
14909 {
14910 /* Mark the symbol as undefined, rather than as
14911 defined in glink. Leave the value if there were
14912 any relocations where pointer equality matters
14913 (this is a clue for the dynamic linker, to make
14914 function pointer comparisons work between an
14915 application and shared library), otherwise set it
14916 to zero. */
14917 sym->st_shndx = SHN_UNDEF;
14918 if (!h->pointer_equality_needed)
14919 sym->st_value = 0;
14920 else if (!h->ref_regular_nonweak)
14921 {
14922 /* This breaks function pointer comparisons, but
14923 that is better than breaking tests for a NULL
14924 function pointer. */
14925 sym->st_value = 0;
14926 }
14927 }
14928 }
8387904d 14929 }
5bd4f169 14930
f5385ebf 14931 if (h->needs_copy)
5bd4f169 14932 {
65f38f15 14933 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 14934
65f38f15
AM		 14935 if (h->dynindx == -1
14936 || (h->root.type != bfd_link_hash_defined
14937 && h->root.type != bfd_link_hash_defweak)
4ce794b7 14938 || htab->relbss == NULL)
65f38f15 14939 abort ();
5bd4f169
AM		 14940
14941 rela.r_offset = (h->root.u.def.value
14942 + h->root.u.def.section->output_section->vma
14943 + h->root.u.def.section->output_offset);
14944 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14945 rela.r_addend = 0;
4ce794b7
AM		 14946 loc = htab->relbss->contents;
14947 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 14948 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 14949 }
14950
b34976b6 14951 return TRUE;
5bd4f169
AM		 14952}
14953
65f38f15
AM		 14954/* Used to decide how to sort relocs in an optimal manner for the
14955 dynamic linker, before writing them out. */
14956
14957static enum elf_reloc_type_class
7e612e98
AM		 14958ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14959 const asection *rel_sec,
14960 const Elf_Internal_Rela *rela)
65f38f15 14961{
04c9666a 14962 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 14963 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14964
33e44f2e 14965 if (rel_sec == htab->elf.irelplt)
7e612e98 14966 return reloc_class_ifunc;
a33d1f77 14967
4ce794b7 14968 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14969 switch (r_type)
65f38f15
AM		 14970 {
14971 case R_PPC64_RELATIVE:
14972 return reloc_class_relative;
14973 case R_PPC64_JMP_SLOT:
14974 return reloc_class_plt;
14975 case R_PPC64_COPY:
14976 return reloc_class_copy;
14977 default:
14978 return reloc_class_normal;
14979 }
14980}
14981
5bd4f169
AM		 14982/* Finish up the dynamic sections. */
14983
b34976b6 14984static bfd_boolean
4ce794b7
AM		 14985ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14986 struct bfd_link_info *info)
5bd4f169 14987{
65f38f15
AM		 14988 struct ppc_link_hash_table *htab;
14989 bfd *dynobj;
5bd4f169 14990 asection *sdyn;
5bd4f169 14991
65f38f15 14992 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14993 if (htab == NULL)
14994 return FALSE;
14995
65f38f15 14996 dynobj = htab->elf.dynobj;
3d4d4302 14997 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 14998
65f38f15 14999 if (htab->elf.dynamic_sections_created)
5bd4f169 15000 {
5bd4f169
AM		 15001 Elf64_External_Dyn *dyncon, *dynconend;
15002
33e44f2e 15003 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 15004 abort ();
5bd4f169
AM		 15005
15006 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 15007 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 15008 for (; dyncon < dynconend; dyncon++)
15009 {
15010 Elf_Internal_Dyn dyn;
19397422 15011 asection *s;
5bd4f169
AM		 15012
15013 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15014
15015 switch (dyn.d_tag)
15016 {
65f38f15
AM		 15017 default:
15018 continue;
5bd4f169 15019
5d1634d7 15020 case DT_PPC64_GLINK:
4ce794b7 15021 s = htab->glink;
6348e046 15022 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15023 /* We stupidly defined DT_PPC64_GLINK to be the start
15024 of glink rather than the first entry point, which is
15025 what ld.so needs, and now have a bigger stub to
15026 support automatic multiple TOCs. */
b9e5796b 15027 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15028 break;
15029
19397422
AM		 15030 case DT_PPC64_OPD:
15031 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15032 if (s == NULL)
15033 continue;
15034 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15035 break;
15036
e8910a83
AM		 15037 case DT_PPC64_OPT:
15038 if (htab->do_multi_toc && htab->multi_toc_needed)
15039 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15040 break;
15041
19397422
AM		 15042 case DT_PPC64_OPDSZ:
15043 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15044 if (s == NULL)
15045 continue;
eea6121a 15046 dyn.d_un.d_val = s->size;
19397422
AM		 15047 break;
15048
65f38f15 15049 case DT_PLTGOT:
33e44f2e 15050 s = htab->elf.splt;
6348e046 15051 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15052 break;
15053
15054 case DT_JMPREL:
33e44f2e 15055 s = htab->elf.srelplt;
6348e046 15056 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15057 break;
5bd4f169 15058
65f38f15 15059 case DT_PLTRELSZ:
33e44f2e 15060 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15061 break;
15062
15063 case DT_RELASZ:
15064 /* Don't count procedure linkage table relocs in the
15065 overall reloc count. */
33e44f2e 15066 s = htab->elf.srelplt;
6348e046
AM		 15067 if (s == NULL)
15068 continue;
eea6121a 15069 dyn.d_un.d_val -= s->size;
6348e046
AM		 15070 break;
15071
15072 case DT_RELA:
15073 /* We may not be using the standard ELF linker script.
15074 If .rela.plt is the first .rela section, we adjust
15075 DT_RELA to not include it. */
33e44f2e 15076 s = htab->elf.srelplt;
6348e046
AM		 15077 if (s == NULL)
15078 continue;
15079 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15080 continue;
eea6121a 15081 dyn.d_un.d_ptr += s->size;
65f38f15 15082 break;
5bd4f169 15083 }
5bd4f169 15084
65f38f15 15085 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15086 }
5bd4f169
AM		 15087 }
15088
33e44f2e 15089 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15090 {
15091 /* Fill in the first entry in the global offset table.
15092 We use it to hold the link-time TOCbase. */
15093 bfd_put_64 (output_bfd,
60ee0d4a 15094 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15095 htab->elf.sgot->contents);
5d1634d7
AM		 15096
15097 /* Set .got entry size. */
33e44f2e 15098 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15099 }
15100
33e44f2e 15101 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15102 {
15103 /* Set .plt entry size. */
33e44f2e 15104 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15105 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15106 }
15107
84f5d08e
AM		 15108 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15109 brlt ourselves if emitrelocations. */
15110 if (htab->brlt != NULL
15111 && htab->brlt->reloc_count != 0
15112 && !_bfd_elf_link_output_relocs (output_bfd,
15113 htab->brlt,
d4730f92 15114 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15115 elf_section_data (htab->brlt)->relocs,
15116 NULL))
15117 return FALSE;
15118
176a0d42
AM		 15119 if (htab->glink != NULL
15120 && htab->glink->reloc_count != 0
15121 && !_bfd_elf_link_output_relocs (output_bfd,
15122 htab->glink,
d4730f92 15123 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15124 elf_section_data (htab->glink)->relocs,
15125 NULL))
15126 return FALSE;
15127
58d180e8
AM		 15128
15129 if (htab->glink_eh_frame != NULL
dbaa2011 15130 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
58d180e8
AM		 15131 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15132 htab->glink_eh_frame,
15133 htab->glink_eh_frame->contents))
15134 return FALSE;
15135
e717da7e 15136 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15137 since we didn't add them to DYNOBJ. We know dynobj is the first
15138 bfd. */
c72f2fb2 15139 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15140 {
15141 asection *s;
7b53ace3 15142
0c8d6e5c 15143 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15144 continue;
15145
e717da7e
AM		 15146 s = ppc64_elf_tdata (dynobj)->got;
15147 if (s != NULL
eea6121a 15148 && s->size != 0
e717da7e
AM		 15149 && s->output_section != bfd_abs_section_ptr
15150 && !bfd_set_section_contents (output_bfd, s->output_section,
15151 s->contents, s->output_offset,
eea6121a 15152 s->size))
e717da7e
AM		 15153 return FALSE;
15154 s = ppc64_elf_tdata (dynobj)->relgot;
15155 if (s != NULL
eea6121a 15156 && s->size != 0
e717da7e
AM		 15157 && s->output_section != bfd_abs_section_ptr
15158 && !bfd_set_section_contents (output_bfd, s->output_section,
15159 s->contents, s->output_offset,
eea6121a 15160 s->size))
e717da7e
AM		 15161 return FALSE;
15162 }
f6c52c13 15163
b34976b6 15164 return TRUE;
5bd4f169
AM		 15165}
15166
5bd4f169 15167#include "elf64-target.h"
7b8e7dad
AM		 15168
15169/* FreeBSD support */
15170
15171#undef TARGET_LITTLE_SYM
15172#undef TARGET_LITTLE_NAME
15173
15174#undef TARGET_BIG_SYM
6d00b590 15175#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15176#undef TARGET_BIG_NAME
15177#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15178
15179#undef ELF_OSABI
15180#define ELF_OSABI ELFOSABI_FREEBSD
15181
15182#undef elf64_bed
15183#define elf64_bed elf64_powerpc_fbsd_bed
15184
15185#include "elf64-target.h"
15186
GDB Binutils - Deliverables
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