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S390: Fix 'expedite' for s390-te-linux64
[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,
b53dfeb2 4808 bfd_vma *value)
555cd476 4809{
f1885d1e
AM		 4810 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4811 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 && (ibfd->flags & DYNAMIC) == 0
4813 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d
NC		 4814 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4815
b53dfeb2 4816 if (*sec != NULL
f1885d1e 4817 && strcmp ((*sec)->name, ".opd") == 0)
b53dfeb2
AM		 4818 {
4819 asection *code_sec;
4820
4821 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4822 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4824
4825 /* If the symbol is a function defined in .opd, and the function
4826 code is in a discarded group, let it appear to be undefined. */
4827 if (!info->relocatable
4828 && (*sec)->reloc_count != 0
4829 && opd_entry_value (*sec, *value, &code_sec, NULL,
4830 FALSE) != (bfd_vma) -1
4831 && discarded_section (code_sec))
4832 {
4833 *sec = bfd_und_section_ptr;
4834 isym->st_shndx = SHN_UNDEF;
4835 }
4836 }
433817dd 4837
6911b7dc
AM		 4838 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4839 {
4840 if (abiversion (ibfd) == 0)
4841 set_abiversion (ibfd, 2);
4842 else if (abiversion (ibfd) == 1)
4843 {
4844 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4845 " for ABI version 1\n"), name);
4846 bfd_set_error (bfd_error_bad_value);
4847 return FALSE;
4848 }
4849 }
4850
555cd476
AM		 4851 return TRUE;
4852}
4853
6911b7dc
AM		 4854/* Merge non-visibility st_other attributes: local entry point. */
4855
4856static void
4857ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4858 const Elf_Internal_Sym *isym,
4859 bfd_boolean definition,
4860 bfd_boolean dynamic)
4861{
4862 if (definition && !dynamic)
4863 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4864 | ELF_ST_VISIBILITY (h->other));
4865}
4866
8387904d 4867/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4868 inclusion of a new ABI object archive that defines "bar".
4869 NAME is a symbol defined in an archive. Return a symbol in the hash
4870 table that might be satisfied by the archive symbols. */
8387904d
AM		 4871
4872static struct elf_link_hash_entry *
4873ppc64_elf_archive_symbol_lookup (bfd *abfd,
4874 struct bfd_link_info *info,
4875 const char *name)
4876{
4877 struct elf_link_hash_entry *h;
4878 char *dot_name;
4879 size_t len;
4880
4881 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4882 if (h != NULL
4883 /* Don't return this sym if it is a fake function descriptor
4884 created by add_symbol_adjust. */
4885 && !(h->root.type == bfd_link_hash_undefweak
4886 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4887 return h;
4888
4889 if (name[0] == '.')
4890 return h;
4891
4892 len = strlen (name);
4893 dot_name = bfd_alloc (abfd, len + 2);
4894 if (dot_name == NULL)
4895 return (struct elf_link_hash_entry *) 0 - 1;
4896 dot_name[0] = '.';
4897 memcpy (dot_name + 1, name, len + 1);
4898 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4899 bfd_release (abfd, dot_name);
4900 return h;
4901}
4902
4903/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4904 new ABI object defines "bar". Well, at least, undefined dot symbols
4905 are made weak. This stops later archive searches from including an
4906 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4907 prevents the linker complaining about undefined symbols.
4908 We also check and correct mismatched symbol visibility here. The
4909 most restrictive visibility of the function descriptor and the
4910 function entry symbol is used. */
8387904d
AM		 4911
4912static bfd_boolean
b3fac117 4913add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4914{
8387904d
AM		 4915 struct ppc_link_hash_table *htab;
4916 struct ppc_link_hash_entry *fdh;
4917
b3fac117 4918 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4919 return TRUE;
4920
b3fac117
AM		 4921 if (eh->elf.root.type == bfd_link_hash_warning)
4922 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4923
b3fac117
AM		 4924 if (eh->elf.root.root.string[0] != '.')
4925 abort ();
8387904d 4926
b3fac117 4927 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4928 if (htab == NULL)
4929 return FALSE;
4930
b31867b6
AM		 4931 fdh = lookup_fdh (eh, htab);
4932 if (fdh == NULL)
4933 {
4934 if (!info->relocatable
4935 && (eh->elf.root.type == bfd_link_hash_undefined
4936 || eh->elf.root.type == bfd_link_hash_undefweak)
4937 && eh->elf.ref_regular)
4938 {
4939 /* Make an undefweak function descriptor sym, which is enough to
4940 pull in an --as-needed shared lib, but won't cause link
4941 errors. Archives are handled elsewhere. */
4942 fdh = make_fdh (info, eh);
4943 if (fdh == NULL)
4944 return FALSE;
4945 fdh->elf.ref_regular = 1;
4946 }
bb700d78 4947 }
b31867b6 4948 else
8387904d 4949 {
35b0ce59
AM		 4950 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4951 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4952 if (entry_vis < descr_vis)
4953 fdh->elf.other += entry_vis - descr_vis;
4954 else if (entry_vis > descr_vis)
4955 eh->elf.other += descr_vis - entry_vis;
4956
e87d886e
AM		 4957 if ((fdh->elf.root.type == bfd_link_hash_defined
4958 || fdh->elf.root.type == bfd_link_hash_defweak)
4959 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4960 {
4961 eh->elf.root.type = bfd_link_hash_undefweak;
4962 eh->was_undefined = 1;
4963 htab->twiddled_syms = 1;
4964 }
8387904d 4965 }
99877b66 4966
8387904d
AM		 4967 return TRUE;
4968}
4969
f6c7c3e8
AM		 4970/* Set up opd section info and abiversion for IBFD, and process list
4971 of dot-symbols we made in link_hash_newfunc. */
b3fac117 4972
8387904d 4973static bfd_boolean
f6c7c3e8 4974ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 4975{
99877b66 4976 struct ppc_link_hash_table *htab;
b3fac117 4977 struct ppc_link_hash_entry **p, *eh;
459609d6 4978 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
433817dd 4979
459609d6 4980 if (opd != NULL && opd->size != 0)
b3fac117 4981 {
459609d6
AM		 4982 if (abiversion (ibfd) == 0)
4983 set_abiversion (ibfd, 1);
4984 else if (abiversion (ibfd) == 2)
f6c7c3e8 4985 {
459609d6
AM		 4986 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4987 " version %d\n"),
4988 ibfd, abiversion (ibfd));
4989 bfd_set_error (bfd_error_bad_value);
4990 return FALSE;
f6c7c3e8
AM		 4991 }
4992
459609d6
AM		 4993 if ((ibfd->flags & DYNAMIC) == 0
4994 && (opd->flags & SEC_RELOC) != 0
4995 && opd->reloc_count != 0
4996 && !bfd_is_abs_section (opd->output_section))
b3fac117 4997 {
459609d6
AM		 4998 /* Garbage collection needs some extra help with .opd sections.
4999 We don't want to necessarily keep everything referenced by
5000 relocs in .opd, as that would keep all functions. Instead,
5001 if we reference an .opd symbol (a function descriptor), we
5002 want to keep the function code symbol's section. This is
5003 easy for global symbols, but for local syms we need to keep
5004 information about the associated function section. */
5005 bfd_size_type amt;
5006 asection **opd_sym_map;
5007
5008 amt = opd->size * sizeof (*opd_sym_map) / 8;
5009 opd_sym_map = bfd_zalloc (ibfd, amt);
5010 if (opd_sym_map == NULL)
b3fac117 5011 return FALSE;
459609d6
AM		 5012 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5013 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5014 ppc64_elf_section_data (opd)->sec_type = sec_opd;
b3fac117
AM		 5015 }
5016 }
5017
459609d6
AM		 5018 if (!is_ppc64_elf (info->output_bfd))
5019 return TRUE;
5020 htab = ppc_hash_table (info);
5021 if (htab == NULL)
5022 return FALSE;
5023
5024 /* For input files without an explicit abiversion in e_flags
5025 we should have flagged any with symbol st_other bits set
5026 as ELFv1 and above flagged those with .opd as ELFv2.
5027 Set the output abiversion if not yet set, and for any input
5028 still ambiguous, take its abiversion from the output.
5029 Differences in ABI are reported later. */
5030 if (abiversion (info->output_bfd) == 0)
5031 set_abiversion (info->output_bfd, abiversion (ibfd));
5032 else if (abiversion (ibfd) == 0)
5033 set_abiversion (ibfd, abiversion (info->output_bfd));
5034
5035 p = &htab->dot_syms;
5036 while ((eh = *p) != NULL)
5037 {
5038 *p = NULL;
5039 if (&eh->elf == htab->elf.hgot)
5040 ;
5041 else if (htab->elf.hgot == NULL
5042 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5043 htab->elf.hgot = &eh->elf;
5044 else if (!add_symbol_adjust (eh, info))
5045 return FALSE;
5046 p = &eh->u.next_dot_sym;
5047 }
5048
b3fac117
AM		 5049 /* Clear the list for non-ppc64 input files. */
5050 p = &htab->dot_syms;
5051 while ((eh = *p) != NULL)
5052 {
5053 *p = NULL;
5054 p = &eh->u.next_dot_sym;
5055 }
99877b66
AM		 5056
5057 /* We need to fix the undefs list for any syms we have twiddled to
5058 undef_weak. */
5059 if (htab->twiddled_syms)
5060 {
77cfaee6 5061 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5062 htab->twiddled_syms = 0;
5063 }
b3fac117 5064 return TRUE;
8387904d
AM		 5065}
5066
97fed1c9
JJ		 5067/* Undo hash table changes when an --as-needed input file is determined
5068 not to be needed. */
5069
5070static bfd_boolean
e5034e59
AM		 5071ppc64_elf_notice_as_needed (bfd *ibfd,
5072 struct bfd_link_info *info,
5073 enum notice_asneeded_action act)
97fed1c9 5074{
e5034e59
AM		 5075 if (act == notice_not_needed)
5076 {
5077 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5078
e5034e59
AM		 5079 if (htab == NULL)
5080 return FALSE;
4dfe6ac6 5081
e5034e59
AM		 5082 htab->dot_syms = NULL;
5083 }
5084 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5085}
5086
aa374f67
AM		 5087/* If --just-symbols against a final linked binary, then assume we need
5088 toc adjusting stubs when calling functions defined there. */
5089
5090static void
5091ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5092{
5093 if ((sec->flags & SEC_CODE) != 0
5094 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5095 && is_ppc64_elf (sec->owner))
5096 {
2c3f079f
AM		 5097 if (abiversion (sec->owner) >= 2
5098 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5099 sec->has_toc_reloc = 1;
5100 }
5101 _bfd_elf_link_just_syms (sec, info);
5102}
5103
e054468f 5104static struct plt_entry **
4ce794b7
AM		 5105update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5106 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5107{
5108 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5109 struct plt_entry **local_plt;
f961d9dd 5110 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5111
5112 if (local_got_ents == NULL)
5113 {
5114 bfd_size_type size = symtab_hdr->sh_info;
5115
e054468f
AM		 5116 size *= (sizeof (*local_got_ents)
5117 + sizeof (*local_plt)
5118 + sizeof (*local_got_tls_masks));
4ce794b7 5119 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5120 if (local_got_ents == NULL)
e054468f 5121 return NULL;
411e1bfb
AM		 5122 elf_local_got_ents (abfd) = local_got_ents;
5123 }
5124
e054468f 5125 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5126 {
5127 struct got_entry *ent;
5128
5129 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5130 if (ent->addend == r_addend
5131 && ent->owner == abfd
5132 && ent->tls_type == tls_type)
411e1bfb
AM		 5133 break;
5134 if (ent == NULL)
5135 {
5136 bfd_size_type amt = sizeof (*ent);
4ce794b7 5137 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5138 if (ent == NULL)
5139 return FALSE;
5140 ent->next = local_got_ents[r_symndx];
5141 ent->addend = r_addend;
e717da7e 5142 ent->owner = abfd;
411e1bfb 5143 ent->tls_type = tls_type;
927be08e 5144 ent->is_indirect = FALSE;
411e1bfb
AM		 5145 ent->got.refcount = 0;
5146 local_got_ents[r_symndx] = ent;
5147 }
5148 ent->got.refcount += 1;
5149 }
5150
e054468f 5151 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5152 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5153 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5154
5155 return local_plt + r_symndx;
65f38f15
AM		 5156}
5157
411e1bfb 5158static bfd_boolean
e054468f 5159update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5160{
411e1bfb 5161 struct plt_entry *ent;
1e2f5b6e 5162
e054468f 5163 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5164 if (ent->addend == addend)
5165 break;
5166 if (ent == NULL)
1e2f5b6e 5167 {
411e1bfb 5168 bfd_size_type amt = sizeof (*ent);
4ce794b7 5169 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5170 if (ent == NULL)
5171 return FALSE;
e054468f 5172 ent->next = *plist;
411e1bfb
AM		 5173 ent->addend = addend;
5174 ent->plt.refcount = 0;
e054468f 5175 *plist = ent;
1e2f5b6e 5176 }
411e1bfb 5177 ent->plt.refcount += 1;
b34976b6 5178 return TRUE;
1e2f5b6e
AM		 5179}
5180
e054468f
AM		 5181static bfd_boolean
5182is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5183{
5184 return (r_type == R_PPC64_REL24
5185 || r_type == R_PPC64_REL14
5186 || r_type == R_PPC64_REL14_BRTAKEN
5187 || r_type == R_PPC64_REL14_BRNTAKEN
5188 || r_type == R_PPC64_ADDR24
5189 || r_type == R_PPC64_ADDR14
5190 || r_type == R_PPC64_ADDR14_BRTAKEN
5191 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5192}
5193
5bd4f169 5194/* Look through the relocs for a section during the first phase, and
65f38f15 5195 calculate needed space in the global offset table, procedure
5d1634d7 5196 linkage table, and dynamic reloc sections. */
5bd4f169 5197
b34976b6 5198static bfd_boolean
4ce794b7
AM		 5199ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5200 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5201{
65f38f15 5202 struct ppc_link_hash_table *htab;
5bd4f169 5203 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5204 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5205 const Elf_Internal_Rela *rel;
5206 const Elf_Internal_Rela *rel_end;
5bd4f169 5207 asection *sreloc;
1e2f5b6e 5208 asection **opd_sym_map;
3a71aa26 5209 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5210
1049f94e 5211 if (info->relocatable)
b34976b6 5212 return TRUE;
5bd4f169 5213
680a3378
AM		 5214 /* Don't do anything special with non-loaded, non-alloced sections.
5215 In particular, any relocs in such sections should not affect GOT
5216 and PLT reference counting (ie. we don't allow them to create GOT
5217 or PLT entries), there's no possibility or desire to optimize TLS
5218 relocs, and there's not much point in propagating relocs to shared
5219 libs that the dynamic linker won't relocate. */
5220 if ((sec->flags & SEC_ALLOC) == 0)
5221 return TRUE;
5222
0c8d6e5c 5223 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5224
65f38f15 5225 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5226 if (htab == NULL)
5227 return FALSE;
5228
3a71aa26
AM		 5229 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5230 FALSE, FALSE, TRUE);
5231 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5232 FALSE, FALSE, TRUE);
0ffa91dd 5233 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5234 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5235 sreloc = NULL;
1e2f5b6e 5236 opd_sym_map = NULL;
f6c7c3e8
AM		 5237 if (ppc64_elf_section_data (sec) != NULL
5238 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5239 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5240
5241 rel_end = relocs + sec->reloc_count;
5242 for (rel = relocs; rel < rel_end; rel++)
5243 {
5244 unsigned long r_symndx;
5245 struct elf_link_hash_entry *h;
04c9666a 5246 enum elf_ppc64_reloc_type r_type;
727fc41e 5247 int tls_type;
7c8fe5c4 5248 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 5249 struct plt_entry **ifunc;
5bd4f169
AM		 5250
5251 r_symndx = ELF64_R_SYM (rel->r_info);
5252 if (r_symndx < symtab_hdr->sh_info)
5253 h = NULL;
5254 else
973a3492
L		 5255 {
5256 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5257 h = elf_follow_link (h);
81fbe831
AM		 5258
5259 /* PR15323, ref flags aren't set for references in the same
5260 object. */
5261 h->root.non_ir_ref = 1;
1c865ab2
AM		 5262
5263 if (h == htab->elf.hgot)
5264 sec->has_toc_reloc = 1;
973a3492 5265 }
5bd4f169 5266
727fc41e 5267 tls_type = 0;
e054468f 5268 ifunc = NULL;
25f23106
AM		 5269 if (h != NULL)
5270 {
5271 if (h->type == STT_GNU_IFUNC)
5272 {
5273 h->needs_plt = 1;
5274 ifunc = &h->plt.plist;
5275 }
5276 }
5277 else
5278 {
5279 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5280 abfd, r_symndx);
5281 if (isym == NULL)
5282 return FALSE;
5283
5284 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5285 {
5286 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5287 rel->r_addend, PLT_IFUNC);
5288 if (ifunc == NULL)
5289 return FALSE;
5290 }
5291 }
4ce794b7 5292 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM		 5293 if (is_branch_reloc (r_type))
5294 {
5295 if (h != NULL && (h == tga || h == dottga))
5296 {
5297 if (rel != relocs
5298 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5299 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5300 /* We have a new-style __tls_get_addr call with a marker
5301 reloc. */
5302 ;
5303 else
5304 /* Mark this section as having an old-style call. */
5305 sec->has_tls_get_addr_call = 1;
5306 }
727fc41e 5307
e054468f 5308 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM		 5309 if (ifunc != NULL
5310 && !update_plt_info (abfd, ifunc, rel->r_addend))
5311 return FALSE;
5312 }
727fc41e 5313
a33d1f77 5314 switch (r_type)
5bd4f169 5315 {
727fc41e
AM		 5316 case R_PPC64_TLSGD:
5317 case R_PPC64_TLSLD:
5318 /* These special tls relocs tie a call to __tls_get_addr with
5319 its parameter symbol. */
5320 break;
5321
411e1bfb
AM		 5322 case R_PPC64_GOT_TLSLD16:
5323 case R_PPC64_GOT_TLSLD16_LO:
5324 case R_PPC64_GOT_TLSLD16_HI:
5325 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5326 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5327 goto dogottls;
5328
5329 case R_PPC64_GOT_TLSGD16:
5330 case R_PPC64_GOT_TLSGD16_LO:
5331 case R_PPC64_GOT_TLSGD16_HI:
5332 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5333 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5334 goto dogottls;
5335
5336 case R_PPC64_GOT_TPREL16_DS:
5337 case R_PPC64_GOT_TPREL16_LO_DS:
5338 case R_PPC64_GOT_TPREL16_HI:
5339 case R_PPC64_GOT_TPREL16_HA:
afb93314 5340 if (info->shared)
411e1bfb
AM		 5341 info->flags |= DF_STATIC_TLS;
5342 tls_type = TLS_TLS | TLS_TPREL;
5343 goto dogottls;
5344
5345 case R_PPC64_GOT_DTPREL16_DS:
5346 case R_PPC64_GOT_DTPREL16_LO_DS:
5347 case R_PPC64_GOT_DTPREL16_HI:
5348 case R_PPC64_GOT_DTPREL16_HA:
5349 tls_type = TLS_TLS | TLS_DTPREL;
5350 dogottls:
5351 sec->has_tls_reloc = 1;
5352 /* Fall thru */
5353
5bd4f169 5354 case R_PPC64_GOT16:
5bd4f169 5355 case R_PPC64_GOT16_DS:
65f38f15
AM		 5356 case R_PPC64_GOT16_HA:
5357 case R_PPC64_GOT16_HI:
5358 case R_PPC64_GOT16_LO:
5bd4f169 5359 case R_PPC64_GOT16_LO_DS:
65f38f15 5360 /* This symbol requires a global offset table entry. */
4c52953f 5361 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5362 if (r_type == R_PPC64_GOT_TLSLD16
5363 || r_type == R_PPC64_GOT_TLSGD16
5364 || r_type == R_PPC64_GOT_TPREL16_DS
5365 || r_type == R_PPC64_GOT_DTPREL16_DS
5366 || r_type == R_PPC64_GOT16
5367 || r_type == R_PPC64_GOT16_DS)
5368 {
5369 htab->do_multi_toc = 1;
d77c8a4b 5370 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5371 }
5372
e717da7e
AM		 5373 if (ppc64_elf_tdata (abfd)->got == NULL
5374 && !create_got_section (abfd, info))
b34976b6 5375 return FALSE;
5bd4f169
AM		 5376
5377 if (h != NULL)
5378 {
411e1bfb
AM		 5379 struct ppc_link_hash_entry *eh;
5380 struct got_entry *ent;
65f38f15 5381
411e1bfb
AM		 5382 eh = (struct ppc_link_hash_entry *) h;
5383 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5384 if (ent->addend == rel->r_addend
e717da7e 5385 && ent->owner == abfd
411e1bfb
AM		 5386 && ent->tls_type == tls_type)
5387 break;
5388 if (ent == NULL)
5bd4f169 5389 {
411e1bfb 5390 bfd_size_type amt = sizeof (*ent);
4ce794b7 5391 ent = bfd_alloc (abfd, amt);
411e1bfb 5392 if (ent == NULL)
b34976b6 5393 return FALSE;
411e1bfb
AM		 5394 ent->next = eh->elf.got.glist;
5395 ent->addend = rel->r_addend;
e717da7e 5396 ent->owner = abfd;
411e1bfb 5397 ent->tls_type = tls_type;
927be08e 5398 ent->is_indirect = FALSE;
411e1bfb
AM		 5399 ent->got.refcount = 0;
5400 eh->elf.got.glist = ent;
5bd4f169 5401 }
411e1bfb 5402 ent->got.refcount += 1;
e7b938ca 5403 eh->tls_mask |= tls_type;
5bd4f169 5404 }
411e1bfb
AM		 5405 else
5406 /* This is a global offset table entry for a local symbol. */
5407 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5408 rel->r_addend, tls_type))
5409 return FALSE;
a345bc8d
AM		 5410
5411 /* We may also need a plt entry if the symbol turns out to be
5412 an ifunc. */
f6c7c3e8 5413 if (h != NULL && !info->shared && abiversion (abfd) != 1)
a345bc8d
AM		 5414 {
5415 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5416 return FALSE;
5417 }
5bd4f169
AM		 5418 break;
5419
5bd4f169 5420 case R_PPC64_PLT16_HA:
65f38f15
AM		 5421 case R_PPC64_PLT16_HI:
5422 case R_PPC64_PLT16_LO:
5423 case R_PPC64_PLT32:
5424 case R_PPC64_PLT64:
5bd4f169 5425 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 5426 actually build the entry in adjust_dynamic_symbol,
5427 because this might be a case of linking PIC code without
5428 linking in any dynamic objects, in which case we don't
5429 need to generate a procedure linkage table after all. */
5bd4f169
AM		 5430 if (h == NULL)
5431 {
5432 /* It does not make sense to have a procedure linkage
3fad3c7c 5433 table entry for a local symbol. */
5bd4f169 5434 bfd_set_error (bfd_error_bad_value);
b34976b6 5435 return FALSE;
5bd4f169 5436 }
411e1bfb 5437 else
e054468f
AM		 5438 {
5439 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5440 return FALSE;
5441 h->needs_plt = 1;
5442 if (h->root.root.string[0] == '.'
5443 && h->root.root.string[1] != '\0')
5444 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5445 }
5bd4f169
AM		 5446 break;
5447
5448 /* The following relocations don't need to propagate the
5449 relocation if linking a shared object since they are
5450 section relative. */
5451 case R_PPC64_SECTOFF:
5452 case R_PPC64_SECTOFF_LO:
5453 case R_PPC64_SECTOFF_HI:
5454 case R_PPC64_SECTOFF_HA:
5455 case R_PPC64_SECTOFF_DS:
5456 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5457 case R_PPC64_DTPREL16:
5458 case R_PPC64_DTPREL16_LO:
5459 case R_PPC64_DTPREL16_HI:
5460 case R_PPC64_DTPREL16_HA:
5461 case R_PPC64_DTPREL16_DS:
5462 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5463 case R_PPC64_DTPREL16_HIGH:
5464 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5465 case R_PPC64_DTPREL16_HIGHER:
5466 case R_PPC64_DTPREL16_HIGHERA:
5467 case R_PPC64_DTPREL16_HIGHEST:
5468 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5469 break;
5470
ad8e1ba5 5471 /* Nor do these. */
25f23106
AM		 5472 case R_PPC64_REL16:
5473 case R_PPC64_REL16_LO:
5474 case R_PPC64_REL16_HI:
5475 case R_PPC64_REL16_HA:
5476 break;
5477
45965137
AM		 5478 /* Not supported as a dynamic relocation. */
5479 case R_PPC64_ADDR64_LOCAL:
5480 if (info->shared)
5481 {
5482 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5483 ppc_howto_init ();
5484 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5485 "in shared libraries and PIEs.\n"),
5486 abfd, sec, rel->r_offset,
5487 ppc64_elf_howto_table[r_type]->name);
5488 bfd_set_error (bfd_error_bad_value);
5489 return FALSE;
5490 }
5491 break;
5492
ad8e1ba5 5493 case R_PPC64_TOC16:
33c0ec9d
AM		 5494 case R_PPC64_TOC16_DS:
5495 htab->do_multi_toc = 1;
d77c8a4b 5496 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM		 5497 case R_PPC64_TOC16_LO:
5498 case R_PPC64_TOC16_HI:
5499 case R_PPC64_TOC16_HA:
ad8e1ba5 5500 case R_PPC64_TOC16_LO_DS:
4c52953f 5501 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5502 break;
5503
5bd4f169
AM		 5504 /* This relocation describes the C++ object vtable hierarchy.
5505 Reconstruct it for later use during GC. */
5506 case R_PPC64_GNU_VTINHERIT:
c152c796 5507 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5508 return FALSE;
5bd4f169
AM		 5509 break;
5510
5511 /* This relocation describes which C++ vtable entries are actually
5512 used. Record for later use during GC. */
5513 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5514 BFD_ASSERT (h != NULL);
5515 if (h != NULL
5516 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5517 return FALSE;
5bd4f169
AM		 5518 break;
5519
721956f4
AM		 5520 case R_PPC64_REL14:
5521 case R_PPC64_REL14_BRTAKEN:
5522 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5523 {
5524 asection *dest = NULL;
5525
5526 /* Heuristic: If jumping outside our section, chances are
5527 we are going to need a stub. */
5528 if (h != NULL)
5529 {
5530 /* If the sym is weak it may be overridden later, so
5531 don't assume we know where a weak sym lives. */
5532 if (h->root.type == bfd_link_hash_defined)
5533 dest = h->root.u.def.section;
5534 }
5535 else
87d72d41
AM		 5536 {
5537 Elf_Internal_Sym *isym;
5538
5539 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5540 abfd, r_symndx);
5541 if (isym == NULL)
5542 return FALSE;
5543
5544 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5545 }
5546
220c76dd 5547 if (dest != sec)
7c8fe5c4 5548 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5549 }
721956f4
AM		 5550 /* Fall through. */
5551
5d1634d7 5552 case R_PPC64_REL24:
e054468f 5553 if (h != NULL && ifunc == NULL)
5d1634d7
AM		 5554 {
5555 /* We may need a .plt entry if the function this reloc
5556 refers to is in a shared lib. */
e054468f 5557 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5558 return FALSE;
e054468f
AM		 5559 h->needs_plt = 1;
5560 if (h->root.root.string[0] == '.'
5561 && h->root.root.string[1] != '\0')
5562 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5563 if (h == tga || h == dottga)
411e1bfb 5564 sec->has_tls_reloc = 1;
411e1bfb
AM		 5565 }
5566 break;
5567
5568 case R_PPC64_TPREL64:
5569 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
afb93314 5570 if (info->shared)
411e1bfb
AM		 5571 info->flags |= DF_STATIC_TLS;
5572 goto dotlstoc;
5573
5574 case R_PPC64_DTPMOD64:
5575 if (rel + 1 < rel_end
5576 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5577 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5578 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5579 else
951fd09b 5580 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5581 goto dotlstoc;
5582
5583 case R_PPC64_DTPREL64:
5584 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5585 if (rel != relocs
5586 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5587 && rel[-1].r_offset == rel->r_offset - 8)
5588 /* This is the second reloc of a dtpmod, dtprel pair.
5589 Don't mark with TLS_DTPREL. */
5590 goto dodyn;
5591
5592 dotlstoc:
5593 sec->has_tls_reloc = 1;
5594 if (h != NULL)
5595 {
5596 struct ppc_link_hash_entry *eh;
5597 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5598 eh->tls_mask |= tls_type;
411e1bfb
AM		 5599 }
5600 else
5601 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5602 rel->r_addend, tls_type))
5603 return FALSE;
5604
7c8fe5c4
AM		 5605 ppc64_sec = ppc64_elf_section_data (sec);
5606 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5607 {
3a71aa26
AM		 5608 bfd_size_type amt;
5609
e7b938ca 5610 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5611 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5612 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5613 if (ppc64_sec->u.toc.symndx == NULL)
5614 return FALSE;
5615 amt = sec->size * sizeof (bfd_vma) / 8;
5616 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5617 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5618 return FALSE;
7c8fe5c4
AM		 5619 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5620 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5621 }
5622 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5623 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5624 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5625
5626 /* Mark the second slot of a GD or LD entry.
5627 -1 to indicate GD and -2 to indicate LD. */
5628 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5629 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5630 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5631 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5632 goto dodyn;
5633
5634 case R_PPC64_TPREL16:
5635 case R_PPC64_TPREL16_LO:
5636 case R_PPC64_TPREL16_HI:
5637 case R_PPC64_TPREL16_HA:
5638 case R_PPC64_TPREL16_DS:
5639 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5640 case R_PPC64_TPREL16_HIGH:
5641 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5642 case R_PPC64_TPREL16_HIGHER:
5643 case R_PPC64_TPREL16_HIGHERA:
5644 case R_PPC64_TPREL16_HIGHEST:
5645 case R_PPC64_TPREL16_HIGHESTA:
5646 if (info->shared)
5647 {
afb93314 5648 info->flags |= DF_STATIC_TLS;
411e1bfb 5649 goto dodyn;
5d1634d7
AM		 5650 }
5651 break;
5652
e86ce104 5653 case R_PPC64_ADDR64:
1e2f5b6e 5654 if (opd_sym_map != NULL
1e2f5b6e 5655 && rel + 1 < rel_end
4ce794b7 5656 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5657 {
8387904d
AM		 5658 if (h != NULL)
5659 {
5660 if (h->root.root.string[0] == '.'
5661 && h->root.root.string[1] != 0
b31867b6 5662 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5663 ;
5664 else
5665 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5666 }
5667 else
5668 {
5669 asection *s;
87d72d41 5670 Elf_Internal_Sym *isym;
1e2f5b6e 5671
87d72d41
AM		 5672 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5673 abfd, r_symndx);
5674 if (isym == NULL)
8387904d 5675 return FALSE;
87d72d41
AM		 5676
5677 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5678 if (s != NULL && s != sec)
3f764659 5679 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5680 }
1e2f5b6e 5681 }
e86ce104
AM		 5682 /* Fall through. */
5683
65f38f15
AM		 5684 case R_PPC64_ADDR16:
5685 case R_PPC64_ADDR16_DS:
5686 case R_PPC64_ADDR16_HA:
5687 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5688 case R_PPC64_ADDR16_HIGH:
5689 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5690 case R_PPC64_ADDR16_HIGHER:
5691 case R_PPC64_ADDR16_HIGHERA:
5692 case R_PPC64_ADDR16_HIGHEST:
5693 case R_PPC64_ADDR16_HIGHESTA:
5694 case R_PPC64_ADDR16_LO:
5695 case R_PPC64_ADDR16_LO_DS:
f6c7c3e8 5696 if (h != NULL && !info->shared && abiversion (abfd) != 1
a345bc8d
AM		 5697 && rel->r_addend == 0)
5698 {
5699 /* We may need a .plt entry if this reloc refers to a
5700 function in a shared lib. */
5701 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5702 return FALSE;
5703 h->pointer_equality_needed = 1;
5704 }
5705 /* Fall through. */
5706
5707 case R_PPC64_REL30:
5708 case R_PPC64_REL32:
5709 case R_PPC64_REL64:
5710 case R_PPC64_ADDR14:
5711 case R_PPC64_ADDR14_BRNTAKEN:
5712 case R_PPC64_ADDR14_BRTAKEN:
65f38f15 5713 case R_PPC64_ADDR24:
65f38f15 5714 case R_PPC64_ADDR32:
65f38f15
AM		 5715 case R_PPC64_UADDR16:
5716 case R_PPC64_UADDR32:
5717 case R_PPC64_UADDR64:
5bd4f169 5718 case R_PPC64_TOC:
81848ca0
AM		 5719 if (h != NULL && !info->shared)
5720 /* We may need a copy reloc. */
f5385ebf 5721 h->non_got_ref = 1;
81848ca0 5722
41bd81ab 5723 /* Don't propagate .opd relocs. */
1e2f5b6e 5724 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5725 break;
e86ce104 5726
65f38f15
AM		 5727 /* If we are creating a shared library, and this is a reloc
5728 against a global symbol, or a non PC relative reloc
5729 against a local symbol, then we need to copy the reloc
5730 into the shared library. However, if we are linking with
5731 -Bsymbolic, we do not need to copy a reloc against a
5732 global symbol which is defined in an object we are
5733 including in the link (i.e., DEF_REGULAR is set). At
5734 this point we have not seen all the input files, so it is
5735 possible that DEF_REGULAR is not set now but will be set
5736 later (it is never cleared). In case of a weak definition,
5737 DEF_REGULAR may be cleared later by a strong definition in
5738 a shared library. We account for that possibility below by
f4656909 5739 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5740 table entry. A similar situation occurs when creating
5741 shared libraries and symbol visibility changes render the
5742 symbol local.
5743
5744 If on the other hand, we are creating an executable, we
5745 may need to keep relocations for symbols satisfied by a
5746 dynamic library if we manage to avoid copy relocs for the
5747 symbol. */
411e1bfb 5748 dodyn:
65f38f15 5749 if ((info->shared
1d483afe 5750 && (must_be_dyn_reloc (info, r_type)
65f38f15 5751 || (h != NULL
198f1157 5752 && (!SYMBOLIC_BIND (info, h)
65f38f15 5753 || h->root.type == bfd_link_hash_defweak
f5385ebf 5754 || !h->def_regular))))
f4656909
AM		 5755 || (ELIMINATE_COPY_RELOCS
5756 && !info->shared
65f38f15
AM		 5757 && h != NULL
5758 && (h->root.type == bfd_link_hash_defweak
25f23106
AM		 5759 || !h->def_regular))
5760 || (!info->shared
5761 && ifunc != NULL))
5bd4f169 5762 {
65f38f15
AM		 5763 /* We must copy these reloc types into the output file.
5764 Create a reloc section in dynobj and make room for
5765 this reloc. */
5bd4f169
AM		 5766 if (sreloc == NULL)
5767 {
83bac4b0
NC		 5768 sreloc = _bfd_elf_make_dynamic_reloc_section
5769 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5770
5bd4f169 5771 if (sreloc == NULL)
83bac4b0 5772 return FALSE;
5bd4f169
AM		 5773 }
5774
65f38f15
AM		 5775 /* If this is a global symbol, we count the number of
5776 relocations we need for this symbol. */
5777 if (h != NULL)
5778 {
19e08130
AM		 5779 struct elf_dyn_relocs *p;
5780 struct elf_dyn_relocs **head;
5781
ec338859 5782 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5783 p = *head;
5784 if (p == NULL || p->sec != sec)
5785 {
5786 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5787 if (p == NULL)
5788 return FALSE;
5789 p->next = *head;
5790 *head = p;
5791 p->sec = sec;
5792 p->count = 0;
5793 p->pc_count = 0;
5794 }
5795 p->count += 1;
5796 if (!must_be_dyn_reloc (info, r_type))
5797 p->pc_count += 1;
65f38f15
AM		 5798 }
5799 else
5800 {
ec338859
AM		 5801 /* Track dynamic relocs needed for local syms too.
5802 We really need local syms available to do this
5803 easily. Oh well. */
19e08130
AM		 5804 struct ppc_dyn_relocs *p;
5805 struct ppc_dyn_relocs **head;
5806 bfd_boolean is_ifunc;
ec338859 5807 asection *s;
6edfbbad 5808 void *vpp;
87d72d41 5809 Elf_Internal_Sym *isym;
6edfbbad 5810
87d72d41
AM		 5811 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5812 abfd, r_symndx);
5813 if (isym == NULL)
b34976b6 5814 return FALSE;
ec338859 5815
87d72d41
AM		 5816 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5817 if (s == NULL)
5818 s = sec;
5819
6edfbbad 5820 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5821 head = (struct ppc_dyn_relocs **) vpp;
5822 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5823 p = *head;
5824 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5825 p = p->next;
5826 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5827 {
5828 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5829 if (p == NULL)
5830 return FALSE;
5831 p->next = *head;
5832 *head = p;
5833 p->sec = sec;
5834 p->ifunc = is_ifunc;
5835 p->count = 0;
5836 }
5837 p->count += 1;
ec338859 5838 }
65f38f15 5839 }
5bd4f169 5840 break;
65f38f15
AM		 5841
5842 default:
96e0dda4 5843 break;
5bd4f169
AM		 5844 }
5845 }
5846
b34976b6 5847 return TRUE;
5bd4f169
AM		 5848}
5849
ee67d69a
AM		 5850/* Merge backend specific data from an object file to the output
5851 object file when linking. */
5852
5853static bfd_boolean
5854ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5855{
5856 unsigned long iflags, oflags;
5857
5858 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5859 return TRUE;
5860
5861 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5862 return TRUE;
5863
5864 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5865 return FALSE;
5866
5867 iflags = elf_elfheader (ibfd)->e_flags;
5868 oflags = elf_elfheader (obfd)->e_flags;
5869
f6c7c3e8 5870 if (iflags & ~EF_PPC64_ABI)
ee67d69a
AM		 5871 {
5872 (*_bfd_error_handler)
5873 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5874 bfd_set_error (bfd_error_bad_value);
5875 return FALSE;
5876 }
f6c7c3e8 5877 else if (iflags != oflags && iflags != 0)
ee67d69a
AM		 5878 {
5879 (*_bfd_error_handler)
5880 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5881 ibfd, iflags, oflags);
5882 bfd_set_error (bfd_error_bad_value);
5883 return FALSE;
5884 }
5885
5886 /* Merge Tag_compatibility attributes and any common GNU ones. */
5887 _bfd_elf_merge_object_attributes (ibfd, obfd);
5888
5889 return TRUE;
5890}
5891
5892static bfd_boolean
5893ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5894{
5895 /* Print normal ELF private data. */
5896 _bfd_elf_print_private_bfd_data (abfd, ptr);
5897
5898 if (elf_elfheader (abfd)->e_flags != 0)
5899 {
5900 FILE *file = ptr;
5901
5902 /* xgettext:c-format */
5903 fprintf (file, _("private flags = 0x%lx:"),
5904 elf_elfheader (abfd)->e_flags);
5905
5906 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5907 fprintf (file, _(" [abiv%ld]"),
5908 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5909 fputc ('\n', file);
5910 }
5911
5912 return TRUE;
5913}
5914
8387904d 5915/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
b53dfeb2
AM		 5916 of the code entry point, and its section, which must be in the same
5917 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
8387904d
AM		 5918
5919static bfd_vma
5920opd_entry_value (asection *opd_sec,
5921 bfd_vma offset,
5922 asection **code_sec,
aef36ac1
AM		 5923 bfd_vma *code_off,
5924 bfd_boolean in_code_sec)
8387904d
AM		 5925{
5926 bfd *opd_bfd = opd_sec->owner;
8860955f 5927 Elf_Internal_Rela *relocs;
8387904d 5928 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5929 bfd_vma val;
8387904d 5930
9f296da3
AM		 5931 /* No relocs implies we are linking a --just-symbols object, or looking
5932 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 5933 if (opd_sec->reloc_count == 0)
5934 {
729eabd5 5935 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 5936
729eabd5
AM		 5937 if (contents == NULL)
5938 {
5939 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5940 return (bfd_vma) -1;
5941 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5942 }
ee1e4ede 5943
729eabd5 5944 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 5945 if (code_sec != NULL)
5946 {
5947 asection *sec, *likely = NULL;
ee1e4ede 5948
aef36ac1 5949 if (in_code_sec)
4b85d634 5950 {
aef36ac1
AM		 5951 sec = *code_sec;
5952 if (sec->vma <= val
5953 && val < sec->vma + sec->size)
5954 likely = sec;
5955 else
5956 val = -1;
5957 }
5958 else
5959 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5960 if (sec->vma <= val
5961 && (sec->flags & SEC_LOAD) != 0
5962 && (sec->flags & SEC_ALLOC) != 0)
5963 likely = sec;
5964 if (likely != NULL)
5965 {
5966 *code_sec = likely;
5967 if (code_off != NULL)
5968 *code_off = val - likely->vma;
4b85d634
AM		 5969 }
5970 }
aef36ac1 5971 return val;
4b85d634
AM		 5972 }
5973
0c8d6e5c 5974 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5975
729eabd5 5976 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 5977 if (relocs == NULL)
5978 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5979
8387904d 5980 /* Go find the opd reloc at the sym address. */
8860955f 5981 lo = relocs;
8387904d
AM		 5982 BFD_ASSERT (lo != NULL);
5983 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5984 val = (bfd_vma) -1;
8387904d
AM		 5985 while (lo < hi)
5986 {
5987 look = lo + (hi - lo) / 2;
5988 if (look->r_offset < offset)
5989 lo = look + 1;
5990 else if (look->r_offset > offset)
5991 hi = look;
5992 else
5993 {
0ffa91dd
NC		 5994 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5995
8387904d
AM		 5996 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5997 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5998 {
5999 unsigned long symndx = ELF64_R_SYM (look->r_info);
b53dfeb2 6000 asection *sec = NULL;
8387904d 6001
b53dfeb2
AM		 6002 if (symndx >= symtab_hdr->sh_info
6003 && elf_sym_hashes (opd_bfd) != NULL)
8387904d
AM		 6004 {
6005 struct elf_link_hash_entry **sym_hashes;
6006 struct elf_link_hash_entry *rh;
6007
6008 sym_hashes = elf_sym_hashes (opd_bfd);
6009 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6010 if (rh != NULL)
6011 {
6012 rh = elf_follow_link (rh);
6013 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6014 || rh->root.type == bfd_link_hash_defweak);
6015 val = rh->root.u.def.value;
6016 sec = rh->root.u.def.section;
b53dfeb2
AM		 6017 if (sec->owner != opd_bfd)
6018 {
6019 sec = NULL;
6020 val = (bfd_vma) -1;
6021 }
6022 }
6023 }
6024
6025 if (sec == NULL)
6026 {
6027 Elf_Internal_Sym *sym;
6028
6029 if (symndx < symtab_hdr->sh_info)
6030 {
6031 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6032 if (sym == NULL)
6033 {
6034 size_t symcnt = symtab_hdr->sh_info;
6035 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6036 symcnt, 0,
6037 NULL, NULL, NULL);
6038 if (sym == NULL)
6039 break;
6040 symtab_hdr->contents = (bfd_byte *) sym;
6041 }
6042 sym += symndx;
128205bb
AM		 6043 }
6044 else
6045 {
b53dfeb2
AM		 6046 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6047 1, symndx,
6048 NULL, NULL, NULL);
128205bb
AM		 6049 if (sym == NULL)
6050 break;
128205bb 6051 }
b53dfeb2
AM		 6052 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6053 if (sec == NULL)
6054 break;
6055 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6056 val = sym->st_value;
8387904d 6057 }
b53dfeb2 6058
8387904d
AM		 6059 val += look->r_addend;
6060 if (code_off != NULL)
6061 *code_off = val;
6062 if (code_sec != NULL)
aef36ac1
AM		 6063 {
6064 if (in_code_sec && *code_sec != sec)
6065 return -1;
6066 else
6067 *code_sec = sec;
6068 }
b53dfeb2 6069 if (sec->output_section != NULL)
8387904d 6070 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6071 }
6072 break;
6073 }
6074 }
645ea6a9 6075
645ea6a9 6076 return val;
8387904d
AM		 6077}
6078
aef36ac1
AM		 6079/* If the ELF symbol SYM might be a function in SEC, return the
6080 function size and set *CODE_OFF to the function's entry point,
6081 otherwise return zero. */
9f296da3 6082
aef36ac1
AM		 6083static bfd_size_type
6084ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6085 bfd_vma *code_off)
9f296da3 6086{
aef36ac1
AM		 6087 bfd_size_type size;
6088
6089 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6090 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6091 return 0;
6092
6093 size = 0;
6094 if (!(sym->flags & BSF_SYNTHETIC))
6095 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6096
6097 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6098 {
aef36ac1
AM		 6099 if (opd_entry_value (sym->section, sym->value,
6100 &sec, code_off, TRUE) == (bfd_vma) -1)
6101 return 0;
6102 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6103 symbol. This size has nothing to do with the code size of the
6104 function, which is what we're supposed to return, but the
6105 code size isn't available without looking up the dot-sym.
6106 However, doing that would be a waste of time particularly
6107 since elf_find_function will look at the dot-sym anyway.
6108 Now, elf_find_function will keep the largest size of any
6109 function sym found at the code address of interest, so return
6110 1 here to avoid it incorrectly caching a larger function size
6111 for a small function. This does mean we return the wrong
6112 size for a new-ABI function of size 24, but all that does is
6113 disable caching for such functions. */
6114 if (size == 24)
6115 size = 1;
9f296da3 6116 }
aef36ac1
AM		 6117 else
6118 {
6119 if (sym->section != sec)
6120 return 0;
6121 *code_off = sym->value;
6122 }
6123 if (size == 0)
6124 size = 1;
6125 return size;
9f296da3
AM		 6126}
6127
854b41e7
AM		 6128/* Return true if symbol is defined in a regular object file. */
6129
6130static bfd_boolean
6131is_static_defined (struct elf_link_hash_entry *h)
6132{
6133 return ((h->root.type == bfd_link_hash_defined
6134 || h->root.type == bfd_link_hash_defweak)
6135 && h->root.u.def.section != NULL
6136 && h->root.u.def.section->output_section != NULL);
6137}
6138
b31867b6
AM		 6139/* If FDH is a function descriptor symbol, return the associated code
6140 entry symbol if it is defined. Return NULL otherwise. */
6141
6142static struct ppc_link_hash_entry *
6143defined_code_entry (struct ppc_link_hash_entry *fdh)
6144{
6145 if (fdh->is_func_descriptor)
6146 {
6147 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6148 if (fh->elf.root.type == bfd_link_hash_defined
6149 || fh->elf.root.type == bfd_link_hash_defweak)
6150 return fh;
6151 }
6152 return NULL;
6153}
6154
6155/* If FH is a function code entry symbol, return the associated
6156 function descriptor symbol if it is defined. Return NULL otherwise. */
6157
6158static struct ppc_link_hash_entry *
6159defined_func_desc (struct ppc_link_hash_entry *fh)
6160{
6161 if (fh->oh != NULL
6162 && fh->oh->is_func_descriptor)
6163 {
6164 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6165 if (fdh->elf.root.type == bfd_link_hash_defined
6166 || fdh->elf.root.type == bfd_link_hash_defweak)
6167 return fdh;
6168 }
6169 return NULL;
6170}
6171
74f0fb50
AM		 6172/* Mark all our entry sym sections, both opd and code section. */
6173
6174static void
6175ppc64_elf_gc_keep (struct bfd_link_info *info)
6176{
6177 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6178 struct bfd_sym_chain *sym;
6179
4dfe6ac6
NC		 6180 if (htab == NULL)
6181 return;
6182
74f0fb50
AM		 6183 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6184 {
b31867b6 6185 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6186 asection *sec;
6187
6188 eh = (struct ppc_link_hash_entry *)
b31867b6 6189 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6190 if (eh == NULL)
6191 continue;
6192 if (eh->elf.root.type != bfd_link_hash_defined
6193 && eh->elf.root.type != bfd_link_hash_defweak)
6194 continue;
6195
b31867b6
AM		 6196 fh = defined_code_entry (eh);
6197 if (fh != NULL)
74f0fb50 6198 {
b31867b6 6199 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6200 sec->flags |= SEC_KEEP;
6201 }
6202 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6203 && opd_entry_value (eh->elf.root.u.def.section,
6204 eh->elf.root.u.def.value,
aef36ac1 6205 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6206 sec->flags |= SEC_KEEP;
6207
6208 sec = eh->elf.root.u.def.section;
6209 sec->flags |= SEC_KEEP;
6210 }
6211}
6212
64d03ab5
AM		 6213/* Mark sections containing dynamically referenced symbols. When
6214 building shared libraries, we must assume that any visible symbol is
6215 referenced. */
6216
6217static bfd_boolean
6218ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6219{
6220 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6221 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6222 struct ppc_link_hash_entry *fdh;
b407645f 6223 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6224
64d03ab5 6225 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6226 fdh = defined_func_desc (eh);
6227 if (fdh != NULL)
6228 eh = fdh;
64d03ab5
AM		 6229
6230 if ((eh->elf.root.type == bfd_link_hash_defined
6231 || eh->elf.root.type == bfd_link_hash_defweak)
6232 && (eh->elf.ref_dynamic
b407645f 6233 || (eh->elf.def_regular
64d03ab5 6234 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6235 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
b407645f
AM		 6236 && (!info->executable
6237 || info->export_dynamic
6238 || (eh->elf.dynamic
6239 && d != NULL
6240 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6241 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6242 || !bfd_hide_sym_by_version (info->version_info,
6243 eh->elf.root.root.string)))))
64d03ab5
AM		 6244 {
6245 asection *code_sec;
b31867b6 6246 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6247
6248 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6249
6250 /* Function descriptor syms cause the associated
6251 function code sym section to be marked. */
b31867b6
AM		 6252 fh = defined_code_entry (eh);
6253 if (fh != NULL)
6254 {
6255 code_sec = fh->elf.root.u.def.section;
6256 code_sec->flags |= SEC_KEEP;
6257 }
64d03ab5
AM		 6258 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6259 && opd_entry_value (eh->elf.root.u.def.section,
6260 eh->elf.root.u.def.value,
aef36ac1 6261 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6262 code_sec->flags |= SEC_KEEP;
6263 }
6264
6265 return TRUE;
6266}
6267
5bd4f169
AM		 6268/* Return the section that should be marked against GC for a given
6269 relocation. */
6270
6271static asection *
4ce794b7 6272ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6273 struct bfd_link_info *info,
4ce794b7
AM		 6274 Elf_Internal_Rela *rel,
6275 struct elf_link_hash_entry *h,
6276 Elf_Internal_Sym *sym)
5bd4f169 6277{
ccfa59ea
AM		 6278 asection *rsec;
6279
ccfa59ea
AM		 6280 /* Syms return NULL if we're marking .opd, so we avoid marking all
6281 function sections, as all functions are referenced in .opd. */
6282 rsec = NULL;
6283 if (get_opd_info (sec) != NULL)
6284 return rsec;
1e2f5b6e 6285
5bd4f169
AM		 6286 if (h != NULL)
6287 {
04c9666a 6288 enum elf_ppc64_reloc_type r_type;
b31867b6 6289 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6290
4ce794b7 6291 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6292 switch (r_type)
5bd4f169
AM		 6293 {
6294 case R_PPC64_GNU_VTINHERIT:
6295 case R_PPC64_GNU_VTENTRY:
6296 break;
6297
6298 default:
6299 switch (h->root.type)
6300 {
6301 case bfd_link_hash_defined:
6302 case bfd_link_hash_defweak:
ccfa59ea 6303 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6304 fdh = defined_func_desc (eh);
6305 if (fdh != NULL)
6306 eh = fdh;
1e2f5b6e
AM		 6307
6308 /* Function descriptor syms cause the associated
6309 function code sym section to be marked. */
b31867b6
AM		 6310 fh = defined_code_entry (eh);
6311 if (fh != NULL)
ccfa59ea
AM		 6312 {
6313 /* They also mark their opd section. */
74f0fb50 6314 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6315
b31867b6 6316 rsec = fh->elf.root.u.def.section;
ccfa59ea 6317 }
8387904d
AM		 6318 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6319 && opd_entry_value (eh->elf.root.u.def.section,
6320 eh->elf.root.u.def.value,
aef36ac1 6321 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6322 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6323 else
1e2f5b6e
AM		 6324 rsec = h->root.u.def.section;
6325 break;
5bd4f169
AM		 6326
6327 case bfd_link_hash_common:
1e2f5b6e
AM		 6328 rsec = h->root.u.c.p->section;
6329 break;
5bd4f169
AM		 6330
6331 default:
fb34365b 6332 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6333 }
6334 }
6335 }
6336 else
6337 {
74f0fb50 6338 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6339
6340 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6341 opd = get_opd_info (rsec);
6342 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6343 {
74f0fb50 6344 rsec->gc_mark = 1;
ccfa59ea 6345
74f0fb50 6346 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 6347 }
5bd4f169
AM		 6348 }
6349
1e2f5b6e 6350 return rsec;
5bd4f169
AM		 6351}
6352
65f38f15
AM		 6353/* Update the .got, .plt. and dynamic reloc reference counts for the
6354 section being removed. */
5bd4f169 6355
b34976b6 6356static bfd_boolean
4ce794b7
AM		 6357ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6358 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6359{
411e1bfb 6360 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6361 Elf_Internal_Shdr *symtab_hdr;
6362 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6363 struct got_entry **local_got_ents;
5bd4f169 6364 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6365
7dda2462
TG		 6366 if (info->relocatable)
6367 return TRUE;
6368
680a3378
AM		 6369 if ((sec->flags & SEC_ALLOC) == 0)
6370 return TRUE;
6371
ec338859
AM		 6372 elf_section_data (sec)->local_dynrel = NULL;
6373
411e1bfb 6374 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6375 if (htab == NULL)
6376 return FALSE;
6377
0ffa91dd 6378 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6379 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6380 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6381
6382 relend = relocs + sec->reloc_count;
6383 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6384 {
6385 unsigned long r_symndx;
04c9666a 6386 enum elf_ppc64_reloc_type r_type;
58ac9f71 6387 struct elf_link_hash_entry *h = NULL;
f961d9dd 6388 unsigned char tls_type = 0;
5bd4f169 6389
a33d1f77 6390 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6391 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6392 if (r_symndx >= symtab_hdr->sh_info)
6393 {
6394 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6395 struct elf_dyn_relocs **pp;
6396 struct elf_dyn_relocs *p;
58ac9f71
AM		 6397
6398 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6399 h = elf_follow_link (h);
58ac9f71
AM		 6400 eh = (struct ppc_link_hash_entry *) h;
6401
6402 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6403 if (p->sec == sec)
6404 {
6405 /* Everything must go for SEC. */
6406 *pp = p->next;
6407 break;
6408 }
6409 }
6410
e054468f
AM		 6411 if (is_branch_reloc (r_type))
6412 {
6413 struct plt_entry **ifunc = NULL;
6414 if (h != NULL)
6415 {
6416 if (h->type == STT_GNU_IFUNC)
6417 ifunc = &h->plt.plist;
6418 }
6419 else if (local_got_ents != NULL)
6420 {
6421 struct plt_entry **local_plt = (struct plt_entry **)
6422 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 6423 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM		 6424 (local_plt + symtab_hdr->sh_info);
6425 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6426 ifunc = local_plt + r_symndx;
6427 }
6428 if (ifunc != NULL)
6429 {
6430 struct plt_entry *ent;
6431
6432 for (ent = *ifunc; ent != NULL; ent = ent->next)
6433 if (ent->addend == rel->r_addend)
6434 break;
6435 if (ent == NULL)
6436 abort ();
6437 if (ent->plt.refcount > 0)
6438 ent->plt.refcount -= 1;
6439 continue;
6440 }
6441 }
6442
a33d1f77
AM		 6443 switch (r_type)
6444 {
411e1bfb
AM		 6445 case R_PPC64_GOT_TLSLD16:
6446 case R_PPC64_GOT_TLSLD16_LO:
6447 case R_PPC64_GOT_TLSLD16_HI:
6448 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6449 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6450 goto dogot;
6451
6452 case R_PPC64_GOT_TLSGD16:
6453 case R_PPC64_GOT_TLSGD16_LO:
6454 case R_PPC64_GOT_TLSGD16_HI:
6455 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6456 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6457 goto dogot;
6458
6459 case R_PPC64_GOT_TPREL16_DS:
6460 case R_PPC64_GOT_TPREL16_LO_DS:
6461 case R_PPC64_GOT_TPREL16_HI:
6462 case R_PPC64_GOT_TPREL16_HA:
6463 tls_type = TLS_TLS | TLS_TPREL;
6464 goto dogot;
6465
6466 case R_PPC64_GOT_DTPREL16_DS:
6467 case R_PPC64_GOT_DTPREL16_LO_DS:
6468 case R_PPC64_GOT_DTPREL16_HI:
6469 case R_PPC64_GOT_DTPREL16_HA:
6470 tls_type = TLS_TLS | TLS_DTPREL;
6471 goto dogot;
6472
a33d1f77
AM		 6473 case R_PPC64_GOT16:
6474 case R_PPC64_GOT16_DS:
6475 case R_PPC64_GOT16_HA:
6476 case R_PPC64_GOT16_HI:
6477 case R_PPC64_GOT16_LO:
6478 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6479 dogot:
6480 {
6481 struct got_entry *ent;
6482
58ac9f71
AM		 6483 if (h != NULL)
6484 ent = h->got.glist;
411e1bfb
AM		 6485 else
6486 ent = local_got_ents[r_symndx];
6487
6488 for (; ent != NULL; ent = ent->next)
6489 if (ent->addend == rel->r_addend
e717da7e 6490 && ent->owner == abfd
411e1bfb
AM		 6491 && ent->tls_type == tls_type)
6492 break;
6493 if (ent == NULL)
6494 abort ();
6495 if (ent->got.refcount > 0)
6496 ent->got.refcount -= 1;
6497 }
a33d1f77 6498 break;
65f38f15 6499
a33d1f77
AM		 6500 case R_PPC64_PLT16_HA:
6501 case R_PPC64_PLT16_HI:
6502 case R_PPC64_PLT16_LO:
6503 case R_PPC64_PLT32:
6504 case R_PPC64_PLT64:
721956f4
AM		 6505 case R_PPC64_REL14:
6506 case R_PPC64_REL14_BRNTAKEN:
6507 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6508 case R_PPC64_REL24:
58ac9f71 6509 if (h != NULL)
5d1634d7 6510 {
411e1bfb
AM		 6511 struct plt_entry *ent;
6512
411e1bfb
AM		 6513 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6514 if (ent->addend == rel->r_addend)
6515 break;
7c6c1722 6516 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6517 ent->plt.refcount -= 1;
5d1634d7 6518 }
e86ce104 6519 break;
5d1634d7 6520
a33d1f77
AM		 6521 default:
6522 break;
6523 }
6524 }
b34976b6 6525 return TRUE;
5bd4f169
AM		 6526}
6527
deb0e272
AM		 6528/* The maximum size of .sfpr. */
6529#define SFPR_MAX (218*4)
6530
6531struct sfpr_def_parms
6532{
699733f6
AM		 6533 const char name[12];
6534 unsigned char lo, hi;
deb0e272
AM		 6535 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6536 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6537};
6538
6539/* Auto-generate _save*, _rest* functions in .sfpr. */
6540
4dfe6ac6 6541static bfd_boolean
deb0e272
AM		 6542sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6543{
6544 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6545 unsigned int i;
6546 size_t len = strlen (parm->name);
6547 bfd_boolean writing = FALSE;
699733f6 6548 char sym[16];
deb0e272 6549
4dfe6ac6
NC		 6550 if (htab == NULL)
6551 return FALSE;
6552
deb0e272
AM		 6553 memcpy (sym, parm->name, len);
6554 sym[len + 2] = 0;
6555
6556 for (i = parm->lo; i <= parm->hi; i++)
6557 {
6558 struct elf_link_hash_entry *h;
6559
6560 sym[len + 0] = i / 10 + '0';
6561 sym[len + 1] = i % 10 + '0';
6562 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6563 if (h != NULL
f5385ebf 6564 && !h->def_regular)
deb0e272
AM		 6565 {
6566 h->root.type = bfd_link_hash_defined;
6567 h->root.u.def.section = htab->sfpr;
6568 h->root.u.def.value = htab->sfpr->size;
6569 h->type = STT_FUNC;
f5385ebf 6570 h->def_regular = 1;
deb0e272
AM		 6571 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6572 writing = TRUE;
6573 if (htab->sfpr->contents == NULL)
6574 {
6575 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6576 if (htab->sfpr->contents == NULL)
6577 return FALSE;
6578 }
6579 }
6580 if (writing)
6581 {
6582 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6583 if (i != parm->hi)
6584 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6585 else
6586 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6587 htab->sfpr->size = p - htab->sfpr->contents;
6588 }
6589 }
6590
6591 return TRUE;
6592}
6593
6594static bfd_byte *
6595savegpr0 (bfd *abfd, bfd_byte *p, int r)
6596{
6597 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6598 return p + 4;
6599}
6600
6601static bfd_byte *
6602savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6603{
6604 p = savegpr0 (abfd, p, r);
a078d95a 6605 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6606 p = p + 4;
6607 bfd_put_32 (abfd, BLR, p);
6608 return p + 4;
6609}
6610
6611static bfd_byte *
6612restgpr0 (bfd *abfd, bfd_byte *p, int r)
6613{
6614 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6615 return p + 4;
6616}
6617
6618static bfd_byte *
6619restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6620{
a078d95a 6621 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6622 p = p + 4;
6623 p = restgpr0 (abfd, p, r);
6624 bfd_put_32 (abfd, MTLR_R0, p);
6625 p = p + 4;
6626 if (r == 29)
6627 {
6628 p = restgpr0 (abfd, p, 30);
6629 p = restgpr0 (abfd, p, 31);
6630 }
6631 bfd_put_32 (abfd, BLR, p);
6632 return p + 4;
6633}
6634
6635static bfd_byte *
6636savegpr1 (bfd *abfd, bfd_byte *p, int r)
6637{
6638 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6639 return p + 4;
6640}
6641
6642static bfd_byte *
6643savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6644{
6645 p = savegpr1 (abfd, p, r);
6646 bfd_put_32 (abfd, BLR, p);
6647 return p + 4;
6648}
6649
6650static bfd_byte *
6651restgpr1 (bfd *abfd, bfd_byte *p, int r)
6652{
6653 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6654 return p + 4;
6655}
6656
6657static bfd_byte *
6658restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6659{
6660 p = restgpr1 (abfd, p, r);
6661 bfd_put_32 (abfd, BLR, p);
6662 return p + 4;
6663}
6664
6665static bfd_byte *
6666savefpr (bfd *abfd, bfd_byte *p, int r)
6667{
6668 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6669 return p + 4;
6670}
6671
6672static bfd_byte *
6673savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6674{
6675 p = savefpr (abfd, p, r);
a078d95a 6676 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6677 p = p + 4;
6678 bfd_put_32 (abfd, BLR, p);
6679 return p + 4;
6680}
6681
6682static bfd_byte *
6683restfpr (bfd *abfd, bfd_byte *p, int r)
6684{
6685 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6686 return p + 4;
6687}
6688
6689static bfd_byte *
6690restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6691{
a078d95a 6692 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6693 p = p + 4;
6694 p = restfpr (abfd, p, r);
6695 bfd_put_32 (abfd, MTLR_R0, p);
6696 p = p + 4;
6697 if (r == 29)
6698 {
6699 p = restfpr (abfd, p, 30);
6700 p = restfpr (abfd, p, 31);
6701 }
6702 bfd_put_32 (abfd, BLR, p);
6703 return p + 4;
6704}
6705
6706static bfd_byte *
6707savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6708{
6709 p = savefpr (abfd, p, r);
6710 bfd_put_32 (abfd, BLR, p);
6711 return p + 4;
6712}
6713
6714static bfd_byte *
6715restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6716{
6717 p = restfpr (abfd, p, r);
6718 bfd_put_32 (abfd, BLR, p);
6719 return p + 4;
6720}
6721
6722static bfd_byte *
6723savevr (bfd *abfd, bfd_byte *p, int r)
6724{
6725 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6726 p = p + 4;
6727 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6728 return p + 4;
6729}
6730
6731static bfd_byte *
6732savevr_tail (bfd *abfd, bfd_byte *p, int r)
6733{
6734 p = savevr (abfd, p, r);
6735 bfd_put_32 (abfd, BLR, p);
6736 return p + 4;
6737}
6738
6739static bfd_byte *
6740restvr (bfd *abfd, bfd_byte *p, int r)
6741{
6742 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6743 p = p + 4;
6744 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6745 return p + 4;
6746}
6747
6748static bfd_byte *
6749restvr_tail (bfd *abfd, bfd_byte *p, int r)
6750{
6751 p = restvr (abfd, p, r);
6752 bfd_put_32 (abfd, BLR, p);
6753 return p + 4;
6754}
6755
e86ce104
AM		 6756/* Called via elf_link_hash_traverse to transfer dynamic linking
6757 information on function code symbol entries to their corresponding
6758 function descriptor symbol entries. */
deb0e272 6759
b34976b6 6760static bfd_boolean
4ce794b7 6761func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6762{
e86ce104 6763 struct bfd_link_info *info;
65f38f15 6764 struct ppc_link_hash_table *htab;
411e1bfb 6765 struct plt_entry *ent;
50bc7936
AM		 6766 struct ppc_link_hash_entry *fh;
6767 struct ppc_link_hash_entry *fdh;
6768 bfd_boolean force_local;
5bd4f169 6769
50bc7936
AM		 6770 fh = (struct ppc_link_hash_entry *) h;
6771 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6772 return TRUE;
e86ce104 6773
4ce794b7 6774 info = inf;
65f38f15 6775 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6776 if (htab == NULL)
6777 return FALSE;
5bd4f169 6778
c09bdfe5
AM		 6779 /* Resolve undefined references to dot-symbols as the value
6780 in the function descriptor, if we have one in a regular object.
6781 This is to satisfy cases like ".quad .foo". Calls to functions
6782 in dynamic objects are handled elsewhere. */
6783 if (fh->elf.root.type == bfd_link_hash_undefweak
6784 && fh->was_undefined
b31867b6
AM		 6785 && (fdh = defined_func_desc (fh)) != NULL
6786 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6787 && opd_entry_value (fdh->elf.root.u.def.section,
6788 fdh->elf.root.u.def.value,
c09bdfe5 6789 &fh->elf.root.u.def.section,
aef36ac1 6790 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6791 {
b31867b6 6792 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6793 fh->elf.forced_local = 1;
b31867b6
AM		 6794 fh->elf.def_regular = fdh->elf.def_regular;
6795 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6796 }
6797
e86ce104
AM		 6798 /* If this is a function code symbol, transfer dynamic linking
6799 information to the function descriptor symbol. */
50bc7936 6800 if (!fh->is_func)
b34976b6 6801 return TRUE;
e86ce104 6802
50bc7936 6803 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6804 if (ent->plt.refcount > 0)
6805 break;
50bc7936
AM		 6806 if (ent == NULL
6807 || fh->elf.root.root.string[0] != '.'
6808 || fh->elf.root.root.string[1] == '\0')
6809 return TRUE;
5bd4f169 6810
50bc7936
AM		 6811 /* Find the corresponding function descriptor symbol. Create it
6812 as undefined if necessary. */
5bd4f169 6813
b31867b6 6814 fdh = lookup_fdh (fh, htab);
50bc7936 6815 if (fdh == NULL
df131623 6816 && !info->executable
50bc7936
AM		 6817 && (fh->elf.root.type == bfd_link_hash_undefined
6818 || fh->elf.root.type == bfd_link_hash_undefweak))
6819 {
908b32fc 6820 fdh = make_fdh (info, fh);
bb700d78
AM		 6821 if (fdh == NULL)
6822 return FALSE;
50bc7936 6823 }
648cca2c 6824
908b32fc 6825 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 6826 code symbol is strong undefined, make the fake sym the same.
6827 If the function code symbol is defined, then force the fake
6828 descriptor local; We can't support overriding of symbols in a
6829 shared library on a fake descriptor. */
908b32fc
AM		 6830
6831 if (fdh != NULL
6832 && fdh->fake
433817dd 6833 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6834 {
433817dd
AM		 6835 if (fh->elf.root.type == bfd_link_hash_undefined)
6836 {
6837 fdh->elf.root.type = bfd_link_hash_undefined;
6838 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6839 }
6840 else if (fh->elf.root.type == bfd_link_hash_defined
6841 || fh->elf.root.type == bfd_link_hash_defweak)
6842 {
6843 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6844 }
908b32fc
AM		 6845 }
6846
50bc7936 6847 if (fdh != NULL
f5385ebf 6848 && !fdh->elf.forced_local
df131623 6849 && (!info->executable
f5385ebf
AM		 6850 || fdh->elf.def_dynamic
6851 || fdh->elf.ref_dynamic
50bc7936
AM		 6852 || (fdh->elf.root.type == bfd_link_hash_undefweak
6853 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6854 {
6855 if (fdh->elf.dynindx == -1)
c152c796 6856 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6857 return FALSE;
f5385ebf
AM		 6858 fdh->elf.ref_regular |= fh->elf.ref_regular;
6859 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6860 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6861 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6862 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6863 {
40d16e0b 6864 move_plt_plist (fh, fdh);
f5385ebf 6865 fdh->elf.needs_plt = 1;
e86ce104 6866 }
50bc7936 6867 fdh->is_func_descriptor = 1;
34814b9f
AM		 6868 fdh->oh = fh;
6869 fh->oh = fdh;
e86ce104
AM		 6870 }
6871
50bc7936
AM		 6872 /* Now that the info is on the function descriptor, clear the
6873 function code sym info. Any function code syms for which we
6874 don't have a definition in a regular file, we force local.
6875 This prevents a shared library from exporting syms that have
6876 been imported from another library. Function code syms that
6877 are really in the library we must leave global to prevent the
6878 linker dragging in a definition from a static library. */
93f3fa99
AM		 6879 force_local = (!fh->elf.def_regular
6880 || fdh == NULL
6881 || !fdh->elf.def_regular
6882 || fdh->elf.forced_local);
50bc7936
AM		 6883 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6884
b34976b6 6885 return TRUE;
e86ce104 6886}
40b8271b 6887
e86ce104 6888/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 6889 this hook to a) provide some gcc support functions, and b) transfer
6890 dynamic linking information gathered so far on function code symbol
6891 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6892
b34976b6 6893static bfd_boolean
4ce794b7
AM		 6894ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6895 struct bfd_link_info *info)
e86ce104
AM		 6896{
6897 struct ppc_link_hash_table *htab;
82bd7b59 6898 unsigned int i;
27fc25a1 6899 static const struct sfpr_def_parms funcs[] =
deb0e272
AM		 6900 {
6901 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6902 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6903 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6904 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6905 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6906 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6907 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6908 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6909 { "._savef", 14, 31, savefpr, savefpr1_tail },
6910 { "._restf", 14, 31, restfpr, restfpr1_tail },
6911 { "_savevr_", 20, 31, savevr, savevr_tail },
6912 { "_restvr_", 20, 31, restvr, restvr_tail }
6913 };
e86ce104
AM		 6914
6915 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6916 if (htab == NULL)
6917 return FALSE;
6918
5295321c
AM		 6919 if (!info->relocatable
6920 && htab->elf.hgot != NULL)
dba6fa9b
AM		 6921 {
6922 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6923 /* Make .TOC. defined so as to prevent it being made dynamic.
6924 The wrong value here is fixed later in ppc64_elf_set_toc. */
6925 htab->elf.hgot->type = STT_OBJECT;
6926 htab->elf.hgot->root.type = bfd_link_hash_defined;
6927 htab->elf.hgot->root.u.def.value = 0;
6928 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6929 htab->elf.hgot->def_regular = 1;
6930 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6931 | STV_HIDDEN);
6932 }
c66bb0ee 6933
82bd7b59
AM		 6934 if (htab->sfpr == NULL)
6935 /* We don't have any relocs. */
b34976b6 6936 return TRUE;
82bd7b59 6937
deb0e272
AM		 6938 /* Provide any missing _save* and _rest* functions. */
6939 htab->sfpr->size = 0;
7d4c687d 6940 if (htab->params->save_restore_funcs)
27fc25a1
AM		 6941 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6942 if (!sfpr_define (info, &funcs[i]))
6943 return FALSE;
82bd7b59 6944
4ce794b7 6945 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6946
eea6121a 6947 if (htab->sfpr->size == 0)
8423293d 6948 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6949
b34976b6 6950 return TRUE;
e86ce104
AM		 6951}
6952
a345bc8d
AM		 6953/* Return true if we have dynamic relocs that apply to read-only sections. */
6954
6955static bfd_boolean
6956readonly_dynrelocs (struct elf_link_hash_entry *h)
6957{
6958 struct ppc_link_hash_entry *eh;
6959 struct elf_dyn_relocs *p;
6960
6961 eh = (struct ppc_link_hash_entry *) h;
6962 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6963 {
6964 asection *s = p->sec->output_section;
6965
6966 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6967 return TRUE;
6968 }
6969 return FALSE;
6970}
6971
e86ce104
AM		 6972/* Adjust a symbol defined by a dynamic object and referenced by a
6973 regular object. The current definition is in some section of the
6974 dynamic object, but we're not including those sections. We have to
6975 change the definition to something the rest of the link can
6976 understand. */
6977
b34976b6 6978static bfd_boolean
4ce794b7
AM		 6979ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6980 struct elf_link_hash_entry *h)
e86ce104
AM		 6981{
6982 struct ppc_link_hash_table *htab;
e86ce104 6983 asection *s;
e86ce104
AM		 6984
6985 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6986 if (htab == NULL)
6987 return FALSE;
e86ce104
AM		 6988
6989 /* Deal with function syms. */
6990 if (h->type == STT_FUNC
e054468f 6991 || h->type == STT_GNU_IFUNC
f5385ebf 6992 || h->needs_plt)
e86ce104
AM		 6993 {
6994 /* Clear procedure linkage table information for any symbol that
6995 won't need a .plt entry. */
411e1bfb
AM		 6996 struct plt_entry *ent;
6997 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6998 if (ent->plt.refcount > 0)
6999 break;
8387904d 7000 if (ent == NULL
e054468f
AM		 7001 || (h->type != STT_GNU_IFUNC
7002 && (SYMBOL_CALLS_LOCAL (info, h)
7003 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7004 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 7005 {
411e1bfb 7006 h->plt.plist = NULL;
f5385ebf 7007 h->needs_plt = 0;
d1eca1e4 7008 h->pointer_equality_needed = 0;
40b8271b 7009 }
a345bc8d
AM		 7010 else if (abiversion (info->output_bfd) == 2)
7011 {
d1eca1e4
AM		 7012 /* Taking a function's address in a read/write section
7013 doesn't require us to define the function symbol in the
7014 executable on a global entry stub. A dynamic reloc can
7015 be used instead. */
7016 if (h->pointer_equality_needed
1009ef28 7017 && h->type != STT_GNU_IFUNC
d1eca1e4
AM		 7018 && !readonly_dynrelocs (h))
7019 {
7020 h->pointer_equality_needed = 0;
7021 h->non_got_ref = 0;
7022 }
7023
a345bc8d
AM		 7024 /* After adjust_dynamic_symbol, non_got_ref set in the
7025 non-shared case means that we have allocated space in
7026 .dynbss for the symbol and thus dyn_relocs for this
7027 symbol should be discarded.
7028 If we get here we know we are making a PLT entry for this
7029 symbol, and in an executable we'd normally resolve
7030 relocations against this symbol to the PLT entry. Allow
7031 dynamic relocs if the reference is weak, and the dynamic
7032 relocs will not cause text relocation. */
d1eca1e4
AM		 7033 else if (!h->ref_regular_nonweak
7034 && h->non_got_ref
7035 && h->type != STT_GNU_IFUNC
7036 && !readonly_dynrelocs (h))
a345bc8d
AM		 7037 h->non_got_ref = 0;
7038
7039 /* If making a plt entry, then we don't need copy relocs. */
7040 return TRUE;
7041 }
5bd4f169 7042 }
bbd7ec4a 7043 else
411e1bfb 7044 h->plt.plist = NULL;
5bd4f169
AM		 7045
7046 /* If this is a weak symbol, and there is a real definition, the
7047 processor independent code will have arranged for us to see the
7048 real definition first, and we can just use the same value. */
f6e332e6 7049 if (h->u.weakdef != NULL)
5bd4f169 7050 {
f6e332e6
AM		 7051 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7052 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7053 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7054 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7055 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7056 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7057 return TRUE;
5bd4f169
AM		 7058 }
7059
5bd4f169
AM		 7060 /* If we are creating a shared library, we must presume that the
7061 only references to the symbol are via the global offset table.
7062 For such cases we need not do anything here; the relocations will
7063 be handled correctly by relocate_section. */
7064 if (info->shared)
b34976b6 7065 return TRUE;
5bd4f169 7066
65f38f15
AM		 7067 /* If there are no references to this symbol that do not use the
7068 GOT, we don't need to generate a copy reloc. */
f5385ebf 7069 if (!h->non_got_ref)
b34976b6 7070 return TRUE;
65f38f15 7071
b186458a
JJ		 7072 /* Don't generate a copy reloc for symbols defined in the executable. */
7073 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7074 return TRUE;
7075
a345bc8d
AM		 7076 /* If we didn't find any dynamic relocs in read-only sections, then
7077 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7078 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7079 {
a345bc8d
AM		 7080 h->non_got_ref = 0;
7081 return TRUE;
65f38f15
AM		 7082 }
7083
5d35169e 7084 if (h->plt.plist != NULL)
97b639ba
AM		 7085 {
7086 /* We should never get here, but unfortunately there are versions
7087 of gcc out there that improperly (for this ABI) put initialized
7088 function pointers, vtable refs and suchlike in read-only
7089 sections. Allow them to proceed, but warn that this might
7090 break at runtime. */
25f53a85 7091 info->callbacks->einfo
bc30df16 7092 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7093 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7094 h->root.root.string);
7095 }
5d35169e
AM		 7096
7097 /* This is a reference to a symbol defined by a dynamic object which
7098 is not a function. */
7099
5bd4f169
AM		 7100 /* We must allocate the symbol in our .dynbss section, which will
7101 become part of the .bss section of the executable. There will be
7102 an entry for this symbol in the .dynsym section. The dynamic
7103 object will contain position independent code, so all references
7104 from the dynamic object to this symbol will go through the global
7105 offset table. The dynamic linker will use the .dynsym entry to
7106 determine the address it must put in the global offset table, so
7107 both the dynamic object and the regular object will refer to the
7108 same memory location for the variable. */
5bd4f169 7109
04c9666a
AM		 7110 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7111 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7112 runtime process image. We need to remember the offset into the
7113 .rela.bss section we are going to use. */
1d7e9d18 7114 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7115 {
eea6121a 7116 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7117 h->needs_copy = 1;
5bd4f169
AM		 7118 }
7119
4ce794b7 7120 s = htab->dynbss;
5bd4f169 7121
027297b7 7122 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 7123}
7124
e86ce104
AM		 7125/* If given a function descriptor symbol, hide both the function code
7126 sym and the descriptor. */
7127static void
4ce794b7
AM		 7128ppc64_elf_hide_symbol (struct bfd_link_info *info,
7129 struct elf_link_hash_entry *h,
7130 bfd_boolean force_local)
e86ce104 7131{
34814b9f 7132 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7133 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7134
34814b9f
AM		 7135 eh = (struct ppc_link_hash_entry *) h;
7136 if (eh->is_func_descriptor)
e86ce104 7137 {
34814b9f 7138 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7139
721956f4 7140 if (fh == NULL)
d1329ca3
AM		 7141 {
7142 const char *p, *q;
7143 struct ppc_link_hash_table *htab;
7144 char save;
7145
7146 /* We aren't supposed to use alloca in BFD because on
7147 systems which do not have alloca the version in libiberty
7148 calls xmalloc, which might cause the program to crash
7149 when it runs out of memory. This function doesn't have a
7150 return status, so there's no way to gracefully return an
7151 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7152 accessed; It's either a string in an ELF string table,
7153 or allocated in an objalloc structure. */
d1329ca3 7154
34814b9f 7155 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7156 save = *p;
7157 *(char *) p = '.';
7158 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7159 if (htab == NULL)
7160 return;
7161
34814b9f
AM		 7162 fh = (struct ppc_link_hash_entry *)
7163 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7164 *(char *) p = save;
7165
7166 /* Unfortunately, if it so happens that the string we were
7167 looking for was allocated immediately before this string,
7168 then we overwrote the string terminator. That's the only
7169 reason the lookup should fail. */
7170 if (fh == NULL)
7171 {
34814b9f
AM		 7172 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7173 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7174 --q, --p;
34814b9f
AM		 7175 if (q < eh->elf.root.root.string && *p == '.')
7176 fh = (struct ppc_link_hash_entry *)
7177 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7178 }
7179 if (fh != NULL)
7180 {
34814b9f
AM		 7181 eh->oh = fh;
7182 fh->oh = eh;
d1329ca3
AM		 7183 }
7184 }
e86ce104 7185 if (fh != NULL)
34814b9f 7186 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7187 }
7188}
7189
411e1bfb 7190static bfd_boolean
8843416a
AM		 7191get_sym_h (struct elf_link_hash_entry **hp,
7192 Elf_Internal_Sym **symp,
7193 asection **symsecp,
f961d9dd 7194 unsigned char **tls_maskp,
8843416a
AM		 7195 Elf_Internal_Sym **locsymsp,
7196 unsigned long r_symndx,
7197 bfd *ibfd)
411e1bfb 7198{
0ffa91dd 7199 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7200
7201 if (r_symndx >= symtab_hdr->sh_info)
7202 {
7203 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7204 struct elf_link_hash_entry *h;
7205
7206 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7207 h = elf_follow_link (h);
411e1bfb
AM		 7208
7209 if (hp != NULL)
7210 *hp = h;
7211
7212 if (symp != NULL)
7213 *symp = NULL;
7214
7215 if (symsecp != NULL)
7216 {
7217 asection *symsec = NULL;
7218 if (h->root.type == bfd_link_hash_defined
7219 || h->root.type == bfd_link_hash_defweak)
7220 symsec = h->root.u.def.section;
7221 *symsecp = symsec;
7222 }
7223
e7b938ca 7224 if (tls_maskp != NULL)
411e1bfb
AM		 7225 {
7226 struct ppc_link_hash_entry *eh;
7227
7228 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7229 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7230 }
7231 }
7232 else
7233 {
7234 Elf_Internal_Sym *sym;
7235 Elf_Internal_Sym *locsyms = *locsymsp;
7236
7237 if (locsyms == NULL)
7238 {
7239 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7240 if (locsyms == NULL)
7241 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7242 symtab_hdr->sh_info,
7243 0, NULL, NULL, NULL);
7244 if (locsyms == NULL)
7245 return FALSE;
7246 *locsymsp = locsyms;
7247 }
7248 sym = locsyms + r_symndx;
7249
7250 if (hp != NULL)
7251 *hp = NULL;
7252
7253 if (symp != NULL)
7254 *symp = sym;
7255
7256 if (symsecp != NULL)
cb33740c 7257 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7258
e7b938ca 7259 if (tls_maskp != NULL)
411e1bfb
AM		 7260 {
7261 struct got_entry **lgot_ents;
f961d9dd 7262 unsigned char *tls_mask;
411e1bfb 7263
e7b938ca 7264 tls_mask = NULL;
411e1bfb
AM		 7265 lgot_ents = elf_local_got_ents (ibfd);
7266 if (lgot_ents != NULL)
7267 {
e054468f
AM		 7268 struct plt_entry **local_plt = (struct plt_entry **)
7269 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7270 unsigned char *lgot_masks = (unsigned char *)
e054468f 7271 (local_plt + symtab_hdr->sh_info);
e7b938ca 7272 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7273 }
e7b938ca 7274 *tls_maskp = tls_mask;
411e1bfb
AM		 7275 }
7276 }
7277 return TRUE;
7278}
7279
e7b938ca 7280/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7281 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7282 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7283
7284static int
f961d9dd 7285get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7286 unsigned long *toc_symndx,
7287 bfd_vma *toc_addend,
0d4792f7 7288 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7289 const Elf_Internal_Rela *rel,
7290 bfd *ibfd)
411e1bfb
AM		 7291{
7292 unsigned long r_symndx;
0d4792f7 7293 int next_r;
411e1bfb
AM		 7294 struct elf_link_hash_entry *h;
7295 Elf_Internal_Sym *sym;
7296 asection *sec;
7297 bfd_vma off;
7298
7299 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7300 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7301 return 0;
411e1bfb 7302
e7b938ca 7303 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7304 || sec == NULL
6bee8834 7305 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7306 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7307 return 1;
411e1bfb
AM		 7308
7309 /* Look inside a TOC section too. */
7310 if (h != NULL)
7311 {
7312 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7313 off = h->root.u.def.value;
7314 }
7315 else
7316 off = sym->st_value;
7317 off += rel->r_addend;
7318 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7319 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7320 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7321 if (toc_symndx != NULL)
7322 *toc_symndx = r_symndx;
3a71aa26
AM		 7323 if (toc_addend != NULL)
7324 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7325 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7326 return 0;
854b41e7 7327 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7328 && (next_r == -1 || next_r == -2))
7329 return 1 - next_r;
951fd09b 7330 return 1;
411e1bfb
AM		 7331}
7332
3b421ab3
AM		 7333/* Find (or create) an entry in the tocsave hash table. */
7334
7335static struct tocsave_entry *
7336tocsave_find (struct ppc_link_hash_table *htab,
7337 enum insert_option insert,
7338 Elf_Internal_Sym **local_syms,
7339 const Elf_Internal_Rela *irela,
7340 bfd *ibfd)
7341{
7342 unsigned long r_indx;
7343 struct elf_link_hash_entry *h;
7344 Elf_Internal_Sym *sym;
7345 struct tocsave_entry ent, *p;
7346 hashval_t hash;
7347 struct tocsave_entry **slot;
7348
7349 r_indx = ELF64_R_SYM (irela->r_info);
7350 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7351 return NULL;
7352 if (ent.sec == NULL || ent.sec->output_section == NULL)
7353 {
7354 (*_bfd_error_handler)
7355 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7356 return NULL;
7357 }
7358
7359 if (h != NULL)
7360 ent.offset = h->root.u.def.value;
7361 else
7362 ent.offset = sym->st_value;
7363 ent.offset += irela->r_addend;
7364
7365 hash = tocsave_htab_hash (&ent);
7366 slot = ((struct tocsave_entry **)
7367 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7368 if (slot == NULL)
7369 return NULL;
7370
7371 if (*slot == NULL)
7372 {
7373 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7374 if (p == NULL)
7375 return NULL;
7376 *p = ent;
7377 *slot = p;
7378 }
7379 return *slot;
7380}
7381
754021d0 7382/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7383 code for the old ABI, these will already have been done. */
754021d0
AM		 7384
7385static bfd_boolean
7386adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7387{
7388 struct ppc_link_hash_entry *eh;
7389 asection *sym_sec;
74f0fb50 7390 struct _opd_sec_data *opd;
754021d0
AM		 7391
7392 if (h->root.type == bfd_link_hash_indirect)
7393 return TRUE;
7394
754021d0
AM		 7395 if (h->root.type != bfd_link_hash_defined
7396 && h->root.type != bfd_link_hash_defweak)
7397 return TRUE;
7398
7399 eh = (struct ppc_link_hash_entry *) h;
7400 if (eh->adjust_done)
7401 return TRUE;
7402
7403 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7404 opd = get_opd_info (sym_sec);
7405 if (opd != NULL && opd->adjust != NULL)
754021d0 7406 {
74f0fb50 7407 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 7408 if (adjust == -1)
7409 {
7410 /* This entry has been deleted. */
b3fac117 7411 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7412 if (dsec == NULL)
7413 {
7414 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7415 if (discarded_section (dsec))
81688140 7416 {
b3fac117 7417 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7418 break;
7419 }
7420 }
4025353c 7421 eh->elf.root.u.def.value = 0;
81688140 7422 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7423 }
7424 else
7425 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7426 eh->adjust_done = 1;
7427 }
7428 return TRUE;
7429}
7430
8c1d1bb8 7431/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7432 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7433 have already been determined. */
7434
7435static bfd_boolean
7436dec_dynrel_count (bfd_vma r_info,
7437 asection *sec,
7438 struct bfd_link_info *info,
7439 Elf_Internal_Sym **local_syms,
7440 struct elf_link_hash_entry *h,
19e08130 7441 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7442{
7443 enum elf_ppc64_reloc_type r_type;
19e08130 7444 asection *sym_sec = NULL;
8c1d1bb8
AM		 7445
7446 /* Can this reloc be dynamic? This switch, and later tests here
7447 should be kept in sync with the code in check_relocs. */
7448 r_type = ELF64_R_TYPE (r_info);
7449 switch (r_type)
7450 {
7451 default:
7452 return TRUE;
7453
7454 case R_PPC64_TPREL16:
7455 case R_PPC64_TPREL16_LO:
7456 case R_PPC64_TPREL16_HI:
7457 case R_PPC64_TPREL16_HA:
7458 case R_PPC64_TPREL16_DS:
7459 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7460 case R_PPC64_TPREL16_HIGH:
7461 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7462 case R_PPC64_TPREL16_HIGHER:
7463 case R_PPC64_TPREL16_HIGHERA:
7464 case R_PPC64_TPREL16_HIGHEST:
7465 case R_PPC64_TPREL16_HIGHESTA:
7466 if (!info->shared)
7467 return TRUE;
7468
7469 case R_PPC64_TPREL64:
7470 case R_PPC64_DTPMOD64:
7471 case R_PPC64_DTPREL64:
7472 case R_PPC64_ADDR64:
7473 case R_PPC64_REL30:
7474 case R_PPC64_REL32:
7475 case R_PPC64_REL64:
7476 case R_PPC64_ADDR14:
7477 case R_PPC64_ADDR14_BRNTAKEN:
7478 case R_PPC64_ADDR14_BRTAKEN:
7479 case R_PPC64_ADDR16:
7480 case R_PPC64_ADDR16_DS:
7481 case R_PPC64_ADDR16_HA:
7482 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7483 case R_PPC64_ADDR16_HIGH:
7484 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7485 case R_PPC64_ADDR16_HIGHER:
7486 case R_PPC64_ADDR16_HIGHERA:
7487 case R_PPC64_ADDR16_HIGHEST:
7488 case R_PPC64_ADDR16_HIGHESTA:
7489 case R_PPC64_ADDR16_LO:
7490 case R_PPC64_ADDR16_LO_DS:
7491 case R_PPC64_ADDR24:
7492 case R_PPC64_ADDR32:
7493 case R_PPC64_UADDR16:
7494 case R_PPC64_UADDR32:
7495 case R_PPC64_UADDR64:
7496 case R_PPC64_TOC:
7497 break;
7498 }
7499
7500 if (local_syms != NULL)
7501 {
7502 unsigned long r_symndx;
8c1d1bb8
AM		 7503 bfd *ibfd = sec->owner;
7504
7505 r_symndx = ELF64_R_SYM (r_info);
7506 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7507 return FALSE;
7508 }
7509
7510 if ((info->shared
1d483afe 7511 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7512 || (h != NULL
198f1157 7513 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7514 || h->root.type == bfd_link_hash_defweak
7515 || !h->def_regular))))
7516 || (ELIMINATE_COPY_RELOCS
7517 && !info->shared
7518 && h != NULL
7519 && (h->root.type == bfd_link_hash_defweak
7520 || !h->def_regular)))
7521 ;
7522 else
7523 return TRUE;
7524
7525 if (h != NULL)
6edfbbad 7526 {
19e08130
AM		 7527 struct elf_dyn_relocs *p;
7528 struct elf_dyn_relocs **pp;
7529 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7530
7531 /* elf_gc_sweep may have already removed all dyn relocs associated
7532 with local syms for a given section. Also, symbol flags are
7533 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7534 report a dynreloc miscount. */
7535 if (*pp == NULL && info->gc_sections)
7536 return TRUE;
7537
7538 while ((p = *pp) != NULL)
60124e18 7539 {
19e08130
AM		 7540 if (p->sec == sec)
7541 {
7542 if (!must_be_dyn_reloc (info, r_type))
7543 p->pc_count -= 1;
7544 p->count -= 1;
7545 if (p->count == 0)
7546 *pp = p->next;
7547 return TRUE;
7548 }
7549 pp = &p->next;
60124e18 7550 }
6edfbbad 7551 }
19e08130
AM		 7552 else
7553 {
7554 struct ppc_dyn_relocs *p;
7555 struct ppc_dyn_relocs **pp;
7556 void *vpp;
7557 bfd_boolean is_ifunc;
8c1d1bb8 7558
19e08130
AM		 7559 if (local_syms == NULL)
7560 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7561 if (sym_sec == NULL)
7562 sym_sec = sec;
c57da1a7 7563
19e08130
AM		 7564 vpp = &elf_section_data (sym_sec)->local_dynrel;
7565 pp = (struct ppc_dyn_relocs **) vpp;
7566
7567 if (*pp == NULL && info->gc_sections)
7568 return TRUE;
7569
7570 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7571 while ((p = *pp) != NULL)
8c1d1bb8 7572 {
19e08130
AM		 7573 if (p->sec == sec && p->ifunc == is_ifunc)
7574 {
7575 p->count -= 1;
7576 if (p->count == 0)
7577 *pp = p->next;
7578 return TRUE;
7579 }
7580 pp = &p->next;
8c1d1bb8 7581 }
8c1d1bb8
AM		 7582 }
7583
8de848d8 7584 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7585 sec->owner, sec);
8c1d1bb8
AM		 7586 bfd_set_error (bfd_error_bad_value);
7587 return FALSE;
7588}
7589
754021d0
AM		 7590/* Remove unused Official Procedure Descriptor entries. Currently we
7591 only remove those associated with functions in discarded link-once
7592 sections, or weakly defined functions that have been overridden. It
7593 would be possible to remove many more entries for statically linked
7594 applications. */
7595
b34976b6 7596bfd_boolean
e7d1c40c 7597ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7598{
7599 bfd *ibfd;
754021d0 7600 bfd_boolean some_edited = FALSE;
3f764659 7601 asection *need_pad = NULL;
e7d1c40c
AM		 7602 struct ppc_link_hash_table *htab;
7603
7604 htab = ppc_hash_table (info);
7605 if (htab == NULL)
7606 return FALSE;
1e2f5b6e 7607
c72f2fb2 7608 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7609 {
7610 asection *sec;
7611 Elf_Internal_Rela *relstart, *rel, *relend;
7612 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7613 Elf_Internal_Sym *local_syms;
1e2f5b6e 7614 bfd_vma offset;
74f0fb50 7615 struct _opd_sec_data *opd;
3f764659
JJ		 7616 bfd_boolean need_edit, add_aux_fields;
7617 bfd_size_type cnt_16b = 0;
1e2f5b6e 7618
854b41e7
AM		 7619 if (!is_ppc64_elf (ibfd))
7620 continue;
7621
1e2f5b6e 7622 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7623 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7624 continue;
7625
dbaa2011 7626 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7627 continue;
7628
1e2f5b6e
AM		 7629 if (sec->output_section == bfd_abs_section_ptr)
7630 continue;
7631
7632 /* Look through the section relocs. */
7633 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7634 continue;
7635
6cdc0ccc 7636 local_syms = NULL;
0ffa91dd 7637 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7638
7639 /* Read the relocations. */
4ce794b7 7640 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7641 info->keep_memory);
1e2f5b6e 7642 if (relstart == NULL)
b34976b6 7643 return FALSE;
1e2f5b6e
AM		 7644
7645 /* First run through the relocs to check they are sane, and to
7646 determine whether we need to edit this opd section. */
b34976b6 7647 need_edit = FALSE;
3f764659 7648 need_pad = sec;
1e2f5b6e
AM		 7649 offset = 0;
7650 relend = relstart + sec->reloc_count;
50bc7936 7651 for (rel = relstart; rel < relend; )
1e2f5b6e 7652 {
04c9666a 7653 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7654 unsigned long r_symndx;
7655 asection *sym_sec;
7656 struct elf_link_hash_entry *h;
7657 Elf_Internal_Sym *sym;
7658
3f764659 7659 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7660 only interested in the reloc pointing to a function entry
7661 point. */
50bc7936
AM		 7662 if (rel->r_offset != offset
7663 || rel + 1 >= relend
7664 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 7665 {
7666 /* If someone messes with .opd alignment then after a
7667 "ld -r" we might have padding in the middle of .opd.
7668 Also, there's nothing to prevent someone putting
7669 something silly in .opd with the assembler. No .opd
b34976b6 7670 optimization for them! */
3f764659 7671 broken_opd:
1e2f5b6e 7672 (*_bfd_error_handler)
d003868e 7673 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7674 need_edit = FALSE;
1e2f5b6e
AM		 7675 break;
7676 }
7677
50bc7936
AM		 7678 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7679 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7680 {
7681 (*_bfd_error_handler)
d003868e
AM		 7682 (_("%B: unexpected reloc type %u in .opd section"),
7683 ibfd, r_type);
50bc7936
AM		 7684 need_edit = FALSE;
7685 break;
7686 }
7687
1e2f5b6e 7688 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7689 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7690 r_symndx, ibfd))
50bc7936 7691 goto error_ret;
1e2f5b6e
AM		 7692
7693 if (sym_sec == NULL || sym_sec->owner == NULL)
7694 {
411e1bfb
AM		 7695 const char *sym_name;
7696 if (h != NULL)
7697 sym_name = h->root.root.string;
7698 else
26c61ae5
L		 7699 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7700 sym_sec);
411e1bfb 7701
1e2f5b6e 7702 (*_bfd_error_handler)
d003868e
AM		 7703 (_("%B: undefined sym `%s' in .opd section"),
7704 ibfd, sym_name);
b34976b6 7705 need_edit = FALSE;
1e2f5b6e
AM		 7706 break;
7707 }
7708
51020317
AM		 7709 /* opd entries are always for functions defined in the
7710 current input bfd. If the symbol isn't defined in the
7711 input bfd, then we won't be using the function in this
7712 bfd; It must be defined in a linkonce section in another
7713 bfd, or is weak. It's also possible that we are
7714 discarding the function due to a linker script /DISCARD/,
7715 which we test for via the output_section. */
7716 if (sym_sec->owner != ibfd
7717 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7718 need_edit = TRUE;
1e2f5b6e 7719
50bc7936 7720 rel += 2;
3f764659
JJ		 7721 if (rel == relend
7722 || (rel + 1 == relend && rel->r_offset == offset + 16))
7723 {
7724 if (sec->size == offset + 24)
7725 {
7726 need_pad = NULL;
7727 break;
7728 }
7729 if (rel == relend && sec->size == offset + 16)
7730 {
7731 cnt_16b++;
7732 break;
7733 }
7734 goto broken_opd;
7735 }
7736
7737 if (rel->r_offset == offset + 24)
7738 offset += 24;
7739 else if (rel->r_offset != offset + 16)
7740 goto broken_opd;
7741 else if (rel + 1 < relend
7742 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7743 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7744 {
7745 offset += 16;
7746 cnt_16b++;
7747 }
7748 else if (rel + 2 < relend
7749 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7750 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7751 {
7752 offset += 24;
7753 rel += 1;
7754 }
7755 else
7756 goto broken_opd;
1e2f5b6e
AM		 7757 }
7758
e7d1c40c 7759 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659
JJ		 7760
7761 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 7762 {
7763 Elf_Internal_Rela *write_rel;
d4730f92 7764 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7765 bfd_byte *rptr, *wptr;
983bddc8 7766 bfd_byte *new_contents;
b34976b6 7767 bfd_boolean skip;
3f764659 7768 long opd_ent_size;
74f0fb50
AM		 7769 bfd_size_type amt;
7770
983bddc8 7771 new_contents = NULL;
74f0fb50
AM		 7772 amt = sec->size * sizeof (long) / 8;
7773 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7774 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7775 if (opd->adjust == NULL)
7776 return FALSE;
7777 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7778
7779 /* This seems a waste of time as input .opd sections are all
7780 zeros as generated by gcc, but I suppose there's no reason
7781 this will always be so. We might start putting something in
7782 the third word of .opd entries. */
7783 if ((sec->flags & SEC_IN_MEMORY) == 0)
7784 {
eea6121a
AM		 7785 bfd_byte *loc;
7786 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7787 {
eea6121a
AM		 7788 if (loc != NULL)
7789 free (loc);
50bc7936 7790 error_ret:
6cdc0ccc
AM		 7791 if (local_syms != NULL
7792 && symtab_hdr->contents != (unsigned char *) local_syms)
7793 free (local_syms);
6cdc0ccc
AM		 7794 if (elf_section_data (sec)->relocs != relstart)
7795 free (relstart);
b34976b6 7796 return FALSE;
6cdc0ccc 7797 }
1e2f5b6e
AM		 7798 sec->contents = loc;
7799 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7800 }
7801
7802 elf_section_data (sec)->relocs = relstart;
7803
3f764659 7804 new_contents = sec->contents;
3f764659
JJ		 7805 if (add_aux_fields)
7806 {
7807 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7808 if (new_contents == NULL)
7809 return FALSE;
7810 need_pad = FALSE;
3f764659 7811 }
b4f4e59f
AM		 7812 wptr = new_contents;
7813 rptr = sec->contents;
3f764659 7814
1e2f5b6e 7815 write_rel = relstart;
b34976b6 7816 skip = FALSE;
1e2f5b6e 7817 offset = 0;
3f764659 7818 opd_ent_size = 0;
1e2f5b6e
AM		 7819 for (rel = relstart; rel < relend; rel++)
7820 {
50bc7936
AM		 7821 unsigned long r_symndx;
7822 asection *sym_sec;
7823 struct elf_link_hash_entry *h;
7824 Elf_Internal_Sym *sym;
7825
7826 r_symndx = ELF64_R_SYM (rel->r_info);
7827 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7828 r_symndx, ibfd))
50bc7936
AM		 7829 goto error_ret;
7830
1e2f5b6e
AM		 7831 if (rel->r_offset == offset)
7832 {
50bc7936 7833 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 7834
7835 /* See if the .opd entry is full 24 byte or
7836 16 byte (with fd_aux entry overlapped with next
7837 fd_func). */
7838 opd_ent_size = 24;
7839 if ((rel + 2 == relend && sec->size == offset + 16)
7840 || (rel + 3 < relend
7841 && rel[2].r_offset == offset + 16
7842 && rel[3].r_offset == offset + 24
7843 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7844 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7845 opd_ent_size = 16;
7846
4025353c
AM		 7847 if (h != NULL
7848 && h->root.root.string[0] == '.')
c4f68ce3 7849 {
e7d1c40c 7850 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
c4f68ce3
AM		 7851 if (fdh != NULL
7852 && fdh->elf.root.type != bfd_link_hash_defined
7853 && fdh->elf.root.type != bfd_link_hash_defweak)
7854 fdh = NULL;
7855 }
1e2f5b6e 7856
51020317
AM		 7857 skip = (sym_sec->owner != ibfd
7858 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 7859 if (skip)
7860 {
4025353c 7861 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 7862 {
7863 /* Arrange for the function descriptor sym
7864 to be dropped. */
d6fe2dc1
AM		 7865 fdh->elf.root.u.def.value = 0;
7866 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7867 }
74f0fb50 7868 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 7869 }
7870 else
1e2f5b6e
AM		 7871 {
7872 /* We'll be keeping this opd entry. */
7873
4025353c 7874 if (fdh != NULL)
1e2f5b6e 7875 {
754021d0
AM		 7876 /* Redefine the function descriptor symbol to
7877 this location in the opd section. It is
7878 necessary to update the value here rather
7879 than using an array of adjustments as we do
7880 for local symbols, because various places
7881 in the generic ELF code use the value
7882 stored in u.def.value. */
3f764659 7883 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7884 fdh->adjust_done = 1;
1e2f5b6e 7885 }
754021d0
AM		 7886
7887 /* Local syms are a bit tricky. We could
7888 tweak them as they can be cached, but
7889 we'd need to look through the local syms
7890 for the function descriptor sym which we
7891 don't have at the moment. So keep an
7892 array of adjustments. */
74f0fb50 7893 opd->adjust[rel->r_offset / 8]
3f764659 7894 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 7895
7896 if (wptr != rptr)
3f764659
JJ		 7897 memcpy (wptr, rptr, opd_ent_size);
7898 wptr += opd_ent_size;
7899 if (add_aux_fields && opd_ent_size == 16)
7900 {
7901 memset (wptr, '\0', 8);
7902 wptr += 8;
7903 }
1e2f5b6e 7904 }
3f764659
JJ		 7905 rptr += opd_ent_size;
7906 offset += opd_ent_size;
1e2f5b6e
AM		 7907 }
7908
50bc7936
AM		 7909 if (skip)
7910 {
60124e18
AM		 7911 if (!NO_OPD_RELOCS
7912 && !info->relocatable
18d944df 7913 && !dec_dynrel_count (rel->r_info, sec, info,
19e08130 7914 NULL, h, sym))
8c1d1bb8 7915 goto error_ret;
50bc7936
AM		 7916 }
7917 else
1e2f5b6e 7918 {
50bc7936
AM		 7919 /* We need to adjust any reloc offsets to point to the
7920 new opd entries. While we're at it, we may as well
7921 remove redundant relocs. */
74f0fb50 7922 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 7923 if (write_rel != rel)
7924 memcpy (write_rel, rel, sizeof (*rel));
7925 ++write_rel;
7926 }
7927 }
7928
3f764659 7929 sec->size = wptr - new_contents;
1e2f5b6e 7930 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7931 if (add_aux_fields)
7932 {
7933 free (sec->contents);
7934 sec->contents = new_contents;
7935 }
7936
05bf9422 7937 /* Fudge the header size too, as this is used later in
cdcf6e38 7938 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7939 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7940 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7941 some_edited = TRUE;
1e2f5b6e 7942 }
6cdc0ccc 7943 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7944 free (relstart);
6cdc0ccc 7945
411e1bfb
AM		 7946 if (local_syms != NULL
7947 && symtab_hdr->contents != (unsigned char *) local_syms)
7948 {
7949 if (!info->keep_memory)
7950 free (local_syms);
7951 else
7952 symtab_hdr->contents = (unsigned char *) local_syms;
7953 }
7954 }
7955
754021d0
AM		 7956 if (some_edited)
7957 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7958
3f764659
JJ		 7959 /* If we are doing a final link and the last .opd entry is just 16 byte
7960 long, add a 8 byte padding after it. */
7961 if (need_pad != NULL && !info->relocatable)
7962 {
7963 bfd_byte *p;
7964
7965 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7966 {
7967 BFD_ASSERT (need_pad->size > 0);
7968
7969 p = bfd_malloc (need_pad->size + 8);
7970 if (p == NULL)
7971 return FALSE;
699733f6 7972
3f764659
JJ		 7973 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7974 p, 0, need_pad->size))
7975 return FALSE;
7976
7977 need_pad->contents = p;
7978 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7979 }
7980 else
7981 {
7982 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7983 if (p == NULL)
7984 return FALSE;
7985
7986 need_pad->contents = p;
7987 }
7988
7989 memset (need_pad->contents + need_pad->size, 0, 8);
7990 need_pad->size += 8;
7991 }
7992
411e1bfb
AM		 7993 return TRUE;
7994}
7995
e1918d23 7996/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7997
e1918d23 7998asection *
e7d1c40c 7999ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 8000{
411e1bfb
AM		 8001 struct ppc_link_hash_table *htab;
8002
411e1bfb 8003 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8004 if (htab == NULL)
8005 return NULL;
8006
ee67d69a
AM		 8007 if (abiversion (info->output_bfd) == 1)
8008 htab->opd_abi = 1;
8009
e7d1c40c 8010 if (htab->params->no_multi_toc)
33c0ec9d
AM		 8011 htab->do_multi_toc = 0;
8012 else if (!htab->do_multi_toc)
e7d1c40c 8013 htab->params->no_multi_toc = 1;
33c0ec9d 8014
3a71aa26
AM		 8015 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8016 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8017 FALSE, FALSE, TRUE));
a7f2871e
AM		 8018 /* Move dynamic linking info to the function descriptor sym. */
8019 if (htab->tls_get_addr != NULL)
8020 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8021 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8022 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8023 FALSE, FALSE, TRUE));
e7d1c40c 8024 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8025 {
8026 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8027
8028 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8029 FALSE, FALSE, TRUE);
8030 if (opt != NULL)
8031 func_desc_adjust (opt, info);
8032 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8033 FALSE, FALSE, TRUE);
8034 if (opt_fd != NULL
8035 && (opt_fd->root.type == bfd_link_hash_defined
8036 || opt_fd->root.type == bfd_link_hash_defweak))
8037 {
8038 /* If glibc supports an optimized __tls_get_addr call stub,
8039 signalled by the presence of __tls_get_addr_opt, and we'll
8040 be calling __tls_get_addr via a plt call stub, then
8041 make __tls_get_addr point to __tls_get_addr_opt. */
8042 tga_fd = &htab->tls_get_addr_fd->elf;
8043 if (htab->elf.dynamic_sections_created
8044 && tga_fd != NULL
8045 && (tga_fd->type == STT_FUNC
8046 || tga_fd->needs_plt)
8047 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8048 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8049 && tga_fd->root.type == bfd_link_hash_undefweak)))
8050 {
8051 struct plt_entry *ent;
8052
8053 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8054 if (ent->plt.refcount > 0)
8055 break;
8056 if (ent != NULL)
8057 {
8058 tga_fd->root.type = bfd_link_hash_indirect;
8059 tga_fd->root.u.i.link = &opt_fd->root;
8060 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8061 if (opt_fd->dynindx != -1)
8062 {
8063 /* Use __tls_get_addr_opt in dynamic relocations. */
8064 opt_fd->dynindx = -1;
8065 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8066 opt_fd->dynstr_index);
8067 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8068 return NULL;
a7f2871e
AM		 8069 }
8070 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8071 tga = &htab->tls_get_addr->elf;
8072 if (opt != NULL && tga != NULL)
8073 {
8074 tga->root.type = bfd_link_hash_indirect;
8075 tga->root.u.i.link = &opt->root;
8076 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8077 _bfd_elf_link_hash_hide_symbol (info, opt,
8078 tga->forced_local);
8079 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8080 }
8081 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8082 htab->tls_get_addr_fd->is_func_descriptor = 1;
8083 if (htab->tls_get_addr != NULL)
8084 {
8085 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8086 htab->tls_get_addr->is_func = 1;
8087 }
8088 }
8089 }
8090 }
8091 else
e7d1c40c 8092 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8093 }
33c0ec9d 8094 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8095}
8387904d 8096
3a71aa26
AM		 8097/* Return TRUE iff REL is a branch reloc with a global symbol matching
8098 HASH1 or HASH2. */
8387904d 8099
3a71aa26
AM		 8100static bfd_boolean
8101branch_reloc_hash_match (const bfd *ibfd,
8102 const Elf_Internal_Rela *rel,
8103 const struct ppc_link_hash_entry *hash1,
8104 const struct ppc_link_hash_entry *hash2)
8105{
8106 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8107 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8108 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8109
e054468f 8110 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8111 {
3a71aa26
AM		 8112 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8113 struct elf_link_hash_entry *h;
8387904d 8114
3a71aa26 8115 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8116 h = elf_follow_link (h);
3a71aa26
AM		 8117 if (h == &hash1->elf || h == &hash2->elf)
8118 return TRUE;
a48ebf4d 8119 }
3a71aa26 8120 return FALSE;
951fd09b 8121}
411e1bfb 8122
951fd09b
AM		 8123/* Run through all the TLS relocs looking for optimization
8124 opportunities. The linker has been hacked (see ppc64elf.em) to do
8125 a preliminary section layout so that we know the TLS segment
8126 offsets. We can't optimize earlier because some optimizations need
8127 to know the tp offset, and we need to optimize before allocating
8128 dynamic relocations. */
8129
8130bfd_boolean
33c0ec9d 8131ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8132{
8133 bfd *ibfd;
8134 asection *sec;
8135 struct ppc_link_hash_table *htab;
663a1470 8136 unsigned char *toc_ref;
102890f0 8137 int pass;
951fd09b 8138
1d483afe 8139 if (info->relocatable || !info->executable)
411e1bfb
AM		 8140 return TRUE;
8141
951fd09b 8142 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8143 if (htab == NULL)
8144 return FALSE;
8145
663a1470
AM		 8146 /* Make two passes over the relocs. On the first pass, mark toc
8147 entries involved with tls relocs, and check that tls relocs
8148 involved in setting up a tls_get_addr call are indeed followed by
8149 such a call. If they are not, we can't do any tls optimization.
8150 On the second pass twiddle tls_mask flags to notify
8151 relocate_section that optimization can be done, and adjust got
8152 and plt refcounts. */
8153 toc_ref = NULL;
8154 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8156 {
8157 Elf_Internal_Sym *locsyms = NULL;
8158 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8159
102890f0
AM		 8160 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8161 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8162 {
8163 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8164 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8165
102890f0
AM		 8166 /* Read the relocations. */
8167 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8168 info->keep_memory);
8169 if (relstart == NULL)
2915c55b
JK		 8170 {
8171 free (toc_ref);
8172 return FALSE;
8173 }
411e1bfb 8174
102890f0
AM		 8175 relend = relstart + sec->reloc_count;
8176 for (rel = relstart; rel < relend; rel++)
8177 {
8178 enum elf_ppc64_reloc_type r_type;
8179 unsigned long r_symndx;
8180 struct elf_link_hash_entry *h;
8181 Elf_Internal_Sym *sym;
8182 asection *sym_sec;
f961d9dd
AM		 8183 unsigned char *tls_mask;
8184 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8185 bfd_vma value;
8186 bfd_boolean ok_tprel, is_local;
8187 long toc_ref_index = 0;
8188 int expecting_tls_get_addr = 0;
663a1470 8189 bfd_boolean ret = FALSE;
411e1bfb 8190
102890f0
AM		 8191 r_symndx = ELF64_R_SYM (rel->r_info);
8192 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8193 r_symndx, ibfd))
8194 {
8195 err_free_rel:
8196 if (elf_section_data (sec)->relocs != relstart)
8197 free (relstart);
8198 if (toc_ref != NULL)
8199 free (toc_ref);
8200 if (locsyms != NULL
0ffa91dd 8201 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8202 != (unsigned char *) locsyms))
8203 free (locsyms);
663a1470 8204 return ret;
102890f0 8205 }
411e1bfb 8206
102890f0
AM		 8207 if (h != NULL)
8208 {
766bc656
AM		 8209 if (h->root.type == bfd_link_hash_defined
8210 || h->root.type == bfd_link_hash_defweak)
8211 value = h->root.u.def.value;
8212 else if (h->root.type == bfd_link_hash_undefweak)
8213 value = 0;
8214 else
663a1470
AM		 8215 {
8216 found_tls_get_addr_arg = 0;
8217 continue;
8218 }
102890f0
AM		 8219 }
8220 else
8221 /* Symbols referenced by TLS relocs must be of type
8222 STT_TLS. So no need for .opd local sym adjust. */
8223 value = sym->st_value;
8224
8225 ok_tprel = FALSE;
8226 is_local = FALSE;
8227 if (h == NULL
8228 || !h->def_dynamic)
8229 {
8230 is_local = TRUE;
766bc656
AM		 8231 if (h != NULL
8232 && h->root.type == bfd_link_hash_undefweak)
8233 ok_tprel = TRUE;
8234 else
8235 {
8236 value += sym_sec->output_offset;
8237 value += sym_sec->output_section->vma;
8238 value -= htab->elf.tls_sec->vma;
8239 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8240 < (bfd_vma) 1 << 32);
8241 }
102890f0 8242 }
951fd09b 8243
102890f0 8244 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8245 /* If this section has old-style __tls_get_addr calls
8246 without marker relocs, then check that each
8247 __tls_get_addr call reloc is preceded by a reloc
8248 that conceivably belongs to the __tls_get_addr arg
8249 setup insn. If we don't find matching arg setup
8250 relocs, don't do any tls optimization. */
8251 if (pass == 0
8252 && sec->has_tls_get_addr_call
8253 && h != NULL
8254 && (h == &htab->tls_get_addr->elf
8255 || h == &htab->tls_get_addr_fd->elf)
8256 && !found_tls_get_addr_arg
8257 && is_branch_reloc (r_type))
8258 {
25f53a85 8259 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8260 "TLS optimization disabled\n"),
8261 ibfd, sec, rel->r_offset);
8262 ret = TRUE;
8263 goto err_free_rel;
8264 }
8265
8266 found_tls_get_addr_arg = 0;
102890f0
AM		 8267 switch (r_type)
8268 {
8269 case R_PPC64_GOT_TLSLD16:
8270 case R_PPC64_GOT_TLSLD16_LO:
8271 expecting_tls_get_addr = 1;
663a1470 8272 found_tls_get_addr_arg = 1;
102890f0
AM		 8273 /* Fall thru */
8274
8275 case R_PPC64_GOT_TLSLD16_HI:
8276 case R_PPC64_GOT_TLSLD16_HA:
8277 /* These relocs should never be against a symbol
8278 defined in a shared lib. Leave them alone if
8279 that turns out to be the case. */
8280 if (!is_local)
8281 continue;
411e1bfb 8282
102890f0 8283 /* LD -> LE */
411e1bfb 8284 tls_set = 0;
102890f0
AM		 8285 tls_clear = TLS_LD;
8286 tls_type = TLS_TLS | TLS_LD;
8287 break;
411e1bfb 8288
102890f0
AM		 8289 case R_PPC64_GOT_TLSGD16:
8290 case R_PPC64_GOT_TLSGD16_LO:
8291 expecting_tls_get_addr = 1;
663a1470 8292 found_tls_get_addr_arg = 1;
102890f0
AM		 8293 /* Fall thru */
8294
8295 case R_PPC64_GOT_TLSGD16_HI:
8296 case R_PPC64_GOT_TLSGD16_HA:
8297 if (ok_tprel)
8298 /* GD -> LE */
411e1bfb 8299 tls_set = 0;
102890f0
AM		 8300 else
8301 /* GD -> IE */
8302 tls_set = TLS_TLS | TLS_TPRELGD;
8303 tls_clear = TLS_GD;
8304 tls_type = TLS_TLS | TLS_GD;
8305 break;
8306
8307 case R_PPC64_GOT_TPREL16_DS:
8308 case R_PPC64_GOT_TPREL16_LO_DS:
8309 case R_PPC64_GOT_TPREL16_HI:
8310 case R_PPC64_GOT_TPREL16_HA:
8311 if (ok_tprel)
8312 {
8313 /* IE -> LE */
8314 tls_set = 0;
8315 tls_clear = TLS_TPREL;
8316 tls_type = TLS_TLS | TLS_TPREL;
8317 break;
8318 }
411e1bfb
AM		 8319 continue;
8320
727fc41e
AM		 8321 case R_PPC64_TLSGD:
8322 case R_PPC64_TLSLD:
663a1470
AM		 8323 found_tls_get_addr_arg = 1;
8324 /* Fall thru */
8325
8326 case R_PPC64_TLS:
8327 case R_PPC64_TOC16:
8328 case R_PPC64_TOC16_LO:
102890f0
AM		 8329 if (sym_sec == NULL || sym_sec != toc)
8330 continue;
8331
8332 /* Mark this toc entry as referenced by a TLS
8333 code sequence. We can do that now in the
8334 case of R_PPC64_TLS, and after checking for
8335 tls_get_addr for the TOC16 relocs. */
8336 if (toc_ref == NULL)
663a1470
AM		 8337 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8338 if (toc_ref == NULL)
8339 goto err_free_rel;
8340
102890f0
AM		 8341 if (h != NULL)
8342 value = h->root.u.def.value;
8343 else
8344 value = sym->st_value;
8345 value += rel->r_addend;
73242275
AM		 8346 if (value % 8 != 0)
8347 continue;
8348 BFD_ASSERT (value < toc->size
8349 && toc->output_offset % 8 == 0);
663a1470 8350 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8351 if (r_type == R_PPC64_TLS
8352 || r_type == R_PPC64_TLSGD
8353 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8354 {
8355 toc_ref[toc_ref_index] = 1;
8356 continue;
8357 }
8358
8359 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8360 continue;
8361
8362 tls_set = 0;
8363 tls_clear = 0;
8364 expecting_tls_get_addr = 2;
8365 break;
8366
8367 case R_PPC64_TPREL64:
8368 if (pass == 0
8369 || sec != toc
8370 || toc_ref == NULL
663a1470 8371 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8372 continue;
8373 if (ok_tprel)
8374 {
8375 /* IE -> LE */
8376 tls_set = TLS_EXPLICIT;
8377 tls_clear = TLS_TPREL;
8378 break;
8379 }
8380 continue;
8381
8382 case R_PPC64_DTPMOD64:
8383 if (pass == 0
8384 || sec != toc
8385 || toc_ref == NULL
663a1470 8386 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8387 continue;
8388 if (rel + 1 < relend
8389 && (rel[1].r_info
8390 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8391 && rel[1].r_offset == rel->r_offset + 8)
8392 {
8393 if (ok_tprel)
8394 /* GD -> LE */
8395 tls_set = TLS_EXPLICIT | TLS_GD;
8396 else
8397 /* GD -> IE */
8398 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8399 tls_clear = TLS_GD;
8400 }
8401 else
8402 {
8403 if (!is_local)
8404 continue;
8405
8406 /* LD -> LE */
8407 tls_set = TLS_EXPLICIT;
8408 tls_clear = TLS_LD;
8409 }
8410 break;
8411
8412 default:
8413 continue;
8414 }
8415
8416 if (pass == 0)
8417 {
727fc41e
AM		 8418 if (!expecting_tls_get_addr
8419 || !sec->has_tls_get_addr_call)
102890f0
AM		 8420 continue;
8421
3a71aa26
AM		 8422 if (rel + 1 < relend
8423 && branch_reloc_hash_match (ibfd, rel + 1,
8424 htab->tls_get_addr,
8425 htab->tls_get_addr_fd))
102890f0 8426 {
3a71aa26 8427 if (expecting_tls_get_addr == 2)
102890f0 8428 {
3a71aa26 8429 /* Check for toc tls entries. */
f961d9dd 8430 unsigned char *toc_tls;
3a71aa26
AM		 8431 int retval;
8432
8433 retval = get_tls_mask (&toc_tls, NULL, NULL,
8434 &locsyms,
8435 rel, ibfd);
8436 if (retval == 0)
8437 goto err_free_rel;
663a1470
AM		 8438 if (toc_tls != NULL)
8439 {
8440 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8441 found_tls_get_addr_arg = 1;
8442 if (retval > 1)
8443 toc_ref[toc_ref_index] = 1;
8444 }
102890f0 8445 }
3a71aa26 8446 continue;
102890f0
AM		 8447 }
8448
8449 if (expecting_tls_get_addr != 1)
8450 continue;
8451
8452 /* Uh oh, we didn't find the expected call. We
8453 could just mark this symbol to exclude it
8454 from tls optimization but it's safer to skip
663a1470 8455 the entire optimization. */
25f53a85 8456 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8457 "TLS optimization disabled\n"),
8458 ibfd, sec, rel->r_offset);
8459 ret = TRUE;
8460 goto err_free_rel;
102890f0
AM		 8461 }
8462
85f7a9cb 8463 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8464 {
8465 struct plt_entry *ent;
8466 for (ent = htab->tls_get_addr->elf.plt.plist;
8467 ent != NULL;
8468 ent = ent->next)
8469 if (ent->addend == 0)
411e1bfb 8470 {
102890f0 8471 if (ent->plt.refcount > 0)
30038c59 8472 {
102890f0
AM		 8473 ent->plt.refcount -= 1;
8474 expecting_tls_get_addr = 0;
30038c59 8475 }
102890f0 8476 break;
411e1bfb 8477 }
102890f0 8478 }
411e1bfb 8479
85f7a9cb 8480 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8481 {
8482 struct plt_entry *ent;
8483 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8484 ent != NULL;
8485 ent = ent->next)
8486 if (ent->addend == 0)
411e1bfb 8487 {
102890f0
AM		 8488 if (ent->plt.refcount > 0)
8489 ent->plt.refcount -= 1;
8490 break;
411e1bfb 8491 }
102890f0 8492 }
411e1bfb 8493
102890f0 8494 if (tls_clear == 0)
30038c59
AM		 8495 continue;
8496
102890f0
AM		 8497 if ((tls_set & TLS_EXPLICIT) == 0)
8498 {
8499 struct got_entry *ent;
411e1bfb 8500
102890f0
AM		 8501 /* Adjust got entry for this reloc. */
8502 if (h != NULL)
8503 ent = h->got.glist;
8504 else
8505 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8506
102890f0
AM		 8507 for (; ent != NULL; ent = ent->next)
8508 if (ent->addend == rel->r_addend
8509 && ent->owner == ibfd
8510 && ent->tls_type == tls_type)
8511 break;
8512 if (ent == NULL)
8513 abort ();
411e1bfb 8514
102890f0
AM		 8515 if (tls_set == 0)
8516 {
8517 /* We managed to get rid of a got entry. */
8518 if (ent->got.refcount > 0)
8519 ent->got.refcount -= 1;
8520 }
8521 }
8522 else
8523 {
8524 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8525 we'll lose one or two dyn relocs. */
8526 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8527 NULL, h, sym))
102890f0 8528 return FALSE;
411e1bfb 8529
102890f0
AM		 8530 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8531 {
8532 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8533 NULL, h, sym))
102890f0
AM		 8534 return FALSE;
8535 }
8536 }
411e1bfb 8537
102890f0
AM		 8538 *tls_mask |= tls_set;
8539 *tls_mask &= ~tls_clear;
8540 }
8c1d1bb8 8541
102890f0
AM		 8542 if (elf_section_data (sec)->relocs != relstart)
8543 free (relstart);
8544 }
411e1bfb 8545
663a1470
AM		 8546 if (locsyms != NULL
8547 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8548 {
8549 if (!info->keep_memory)
8550 free (locsyms);
8551 else
8552 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8553 }
8554 }
411e1bfb 8555
663a1470
AM		 8556 if (toc_ref != NULL)
8557 free (toc_ref);
b34976b6 8558 return TRUE;
1e2f5b6e 8559}
b34976b6 8560
c5614fa4
AM		 8561/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8562 the values of any global symbols in a toc section that has been
8563 edited. Globals in toc sections should be a rarity, so this function
8564 sets a flag if any are found in toc sections other than the one just
8565 edited, so that futher hash table traversals can be avoided. */
8566
8567struct adjust_toc_info
8568{
8569 asection *toc;
8570 unsigned long *skip;
8571 bfd_boolean global_toc_syms;
8572};
8573
ba761f19
AM		 8574enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8575
c5614fa4
AM		 8576static bfd_boolean
8577adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8578{
8579 struct ppc_link_hash_entry *eh;
8580 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8581 unsigned long i;
c5614fa4 8582
c5614fa4
AM		 8583 if (h->root.type != bfd_link_hash_defined
8584 && h->root.type != bfd_link_hash_defweak)
8585 return TRUE;
8586
8587 eh = (struct ppc_link_hash_entry *) h;
8588 if (eh->adjust_done)
8589 return TRUE;
8590
8591 if (eh->elf.root.u.def.section == toc_inf->toc)
8592 {
854b41e7
AM		 8593 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8594 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8595 else
854b41e7
AM		 8596 i = eh->elf.root.u.def.value >> 3;
8597
ba761f19 8598 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8599 {
8600 (*_bfd_error_handler)
854b41e7
AM		 8601 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8602 do
8603 ++i;
ba761f19 8604 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8605 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8606 }
854b41e7
AM		 8607
8608 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8609 eh->adjust_done = 1;
8610 }
8611 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8612 toc_inf->global_toc_syms = TRUE;
8613
8614 return TRUE;
8615}
8616
560c8763
AM		 8617/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8618
8619static bfd_boolean
8620ok_lo_toc_insn (unsigned int insn)
8621{
8622 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8623 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8624 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8625 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8626 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8627 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8628 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8629 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8630 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8631 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8632 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8633 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8634 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8635 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8636 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8637 && (insn & 3) != 1)
8638 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8639 && ((insn & 3) == 0 || (insn & 3) == 3))
8640 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8641}
8642
c5614fa4
AM		 8643/* Examine all relocs referencing .toc sections in order to remove
8644 unused .toc entries. */
8645
8646bfd_boolean
33c0ec9d 8647ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8648{
8649 bfd *ibfd;
8650 struct adjust_toc_info toc_inf;
67f0cbdb 8651 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8652
67f0cbdb 8653 htab->do_toc_opt = 1;
c5614fa4 8654 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8655 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8656 {
8657 asection *toc, *sec;
8658 Elf_Internal_Shdr *symtab_hdr;
8659 Elf_Internal_Sym *local_syms;
425b145b 8660 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8661 unsigned long *skip, *drop;
8662 unsigned char *used;
8663 unsigned char *keep, last, some_unused;
8664
854b41e7
AM		 8665 if (!is_ppc64_elf (ibfd))
8666 continue;
8667
c5614fa4
AM		 8668 toc = bfd_get_section_by_name (ibfd, ".toc");
8669 if (toc == NULL
92b7a70f 8670 || toc->size == 0
dbaa2011
AM		 8671 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8672 || discarded_section (toc))
c5614fa4
AM		 8673 continue;
8674
425b145b 8675 toc_relocs = NULL;
c5614fa4 8676 local_syms = NULL;
0ffa91dd 8677 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8678
8679 /* Look at sections dropped from the final link. */
8680 skip = NULL;
8681 relstart = NULL;
8682 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8683 {
8684 if (sec->reloc_count == 0
dbaa2011 8685 || !discarded_section (sec)
c5614fa4
AM		 8686 || get_opd_info (sec)
8687 || (sec->flags & SEC_ALLOC) == 0
8688 || (sec->flags & SEC_DEBUGGING) != 0)
8689 continue;
8690
8691 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8692 if (relstart == NULL)
8693 goto error_ret;
8694
8695 /* Run through the relocs to see which toc entries might be
8696 unused. */
8697 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8698 {
8699 enum elf_ppc64_reloc_type r_type;
8700 unsigned long r_symndx;
8701 asection *sym_sec;
8702 struct elf_link_hash_entry *h;
8703 Elf_Internal_Sym *sym;
8704 bfd_vma val;
8705
8706 r_type = ELF64_R_TYPE (rel->r_info);
8707 switch (r_type)
8708 {
8709 default:
8710 continue;
8711
8712 case R_PPC64_TOC16:
8713 case R_PPC64_TOC16_LO:
8714 case R_PPC64_TOC16_HI:
8715 case R_PPC64_TOC16_HA:
8716 case R_PPC64_TOC16_DS:
8717 case R_PPC64_TOC16_LO_DS:
8718 break;
8719 }
8720
8721 r_symndx = ELF64_R_SYM (rel->r_info);
8722 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8723 r_symndx, ibfd))
8724 goto error_ret;
8725
8726 if (sym_sec != toc)
8727 continue;
8728
8729 if (h != NULL)
8730 val = h->root.u.def.value;
8731 else
8732 val = sym->st_value;
8733 val += rel->r_addend;
8734
8735 if (val >= toc->size)
8736 continue;
8737
8738 /* Anything in the toc ought to be aligned to 8 bytes.
8739 If not, don't mark as unused. */
8740 if (val & 7)
8741 continue;
8742
8743 if (skip == NULL)
8744 {
854b41e7 8745 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8746 if (skip == NULL)
8747 goto error_ret;
8748 }
8749
ba761f19 8750 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8751 }
8752
8753 if (elf_section_data (sec)->relocs != relstart)
8754 free (relstart);
8755 }
8756
ba761f19
AM		 8757 /* For largetoc loads of address constants, we can convert
8758 . addis rx,2,addr@got@ha
8759 . ld ry,addr@got@l(rx)
8760 to
8761 . addis rx,2,addr@toc@ha
8762 . addi ry,rx,addr@toc@l
8763 when addr is within 2G of the toc pointer. This then means
8764 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8765
ba761f19
AM		 8766 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8767 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8768 && toc->reloc_count != 0)
8769 {
8770 /* Read toc relocs. */
425b145b
AM		 8771 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8772 info->keep_memory);
8773 if (toc_relocs == NULL)
ba761f19
AM		 8774 goto error_ret;
8775
425b145b 8776 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8777 {
8778 enum elf_ppc64_reloc_type r_type;
8779 unsigned long r_symndx;
8780 asection *sym_sec;
8781 struct elf_link_hash_entry *h;
8782 Elf_Internal_Sym *sym;
8783 bfd_vma val, addr;
8784
8785 r_type = ELF64_R_TYPE (rel->r_info);
8786 if (r_type != R_PPC64_ADDR64)
8787 continue;
8788
8789 r_symndx = ELF64_R_SYM (rel->r_info);
8790 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8791 r_symndx, ibfd))
8792 goto error_ret;
8793
425b145b 8794 if (sym_sec == NULL
dbaa2011 8795 || discarded_section (sym_sec))
425b145b
AM		 8796 continue;
8797
afe397ea 8798 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8799 continue;
8800
8801 if (h != NULL)
bddc25c9
AM		 8802 {
8803 if (h->type == STT_GNU_IFUNC)
8804 continue;
8805 val = h->root.u.def.value;
8806 }
ba761f19 8807 else
bddc25c9
AM		 8808 {
8809 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8810 continue;
8811 val = sym->st_value;
8812 }
ba761f19
AM		 8813 val += rel->r_addend;
8814 val += sym_sec->output_section->vma + sym_sec->output_offset;
8815
8816 /* We don't yet know the exact toc pointer value, but we
8817 know it will be somewhere in the toc section. Don't
8818 optimize if the difference from any possible toc
8819 pointer is outside [ff..f80008000, 7fff7fff]. */
8820 addr = toc->output_section->vma + TOC_BASE_OFF;
8821 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8822 continue;
8823
8824 addr = toc->output_section->vma + toc->output_section->rawsize;
8825 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8826 continue;
8827
8828 if (skip == NULL)
8829 {
8830 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8831 if (skip == NULL)
8832 goto error_ret;
8833 }
8834
8835 skip[rel->r_offset >> 3]
425b145b 8836 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8837 }
ba761f19
AM		 8838 }
8839
c5614fa4
AM		 8840 if (skip == NULL)
8841 continue;
8842
8843 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8844 if (used == NULL)
8845 {
8846 error_ret:
8847 if (local_syms != NULL
8848 && symtab_hdr->contents != (unsigned char *) local_syms)
8849 free (local_syms);
8850 if (sec != NULL
8851 && relstart != NULL
8852 && elf_section_data (sec)->relocs != relstart)
8853 free (relstart);
425b145b
AM		 8854 if (toc_relocs != NULL
8855 && elf_section_data (toc)->relocs != toc_relocs)
8856 free (toc_relocs);
c5614fa4
AM		 8857 if (skip != NULL)
8858 free (skip);
8859 return FALSE;
8860 }
8861
30038c59
AM		 8862 /* Now check all kept sections that might reference the toc.
8863 Check the toc itself last. */
8864 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8865 : ibfd->sections);
c5614fa4 8866 sec != NULL;
c5614fa4 8867 sec = (sec == toc ? NULL
c5614fa4 8868 : sec->next == NULL ? toc
30038c59 8869 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8870 : sec->next))
8871 {
8872 int repeat;
8873
8874 if (sec->reloc_count == 0
dbaa2011 8875 || discarded_section (sec)
c5614fa4
AM		 8876 || get_opd_info (sec)
8877 || (sec->flags & SEC_ALLOC) == 0
8878 || (sec->flags & SEC_DEBUGGING) != 0)
8879 continue;
8880
854b41e7
AM		 8881 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8882 info->keep_memory);
c5614fa4 8883 if (relstart == NULL)
2915c55b
JK		 8884 {
8885 free (used);
8886 goto error_ret;
8887 }
c5614fa4
AM		 8888
8889 /* Mark toc entries referenced as used. */
c5614fa4 8890 do
d4f1ee75
AM		 8891 {
8892 repeat = 0;
8893 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8894 {
8895 enum elf_ppc64_reloc_type r_type;
8896 unsigned long r_symndx;
8897 asection *sym_sec;
8898 struct elf_link_hash_entry *h;
8899 Elf_Internal_Sym *sym;
8900 bfd_vma val;
8901 enum {no_check, check_lo, check_ha} insn_check;
98528052 8902
d4f1ee75
AM		 8903 r_type = ELF64_R_TYPE (rel->r_info);
8904 switch (r_type)
8905 {
8906 default:
8907 insn_check = no_check;
8908 break;
98528052 8909
d4f1ee75
AM		 8910 case R_PPC64_GOT_TLSLD16_HA:
8911 case R_PPC64_GOT_TLSGD16_HA:
8912 case R_PPC64_GOT_TPREL16_HA:
8913 case R_PPC64_GOT_DTPREL16_HA:
8914 case R_PPC64_GOT16_HA:
8915 case R_PPC64_TOC16_HA:
8916 insn_check = check_ha;
8917 break;
98528052 8918
d4f1ee75
AM		 8919 case R_PPC64_GOT_TLSLD16_LO:
8920 case R_PPC64_GOT_TLSGD16_LO:
8921 case R_PPC64_GOT_TPREL16_LO_DS:
8922 case R_PPC64_GOT_DTPREL16_LO_DS:
8923 case R_PPC64_GOT16_LO:
8924 case R_PPC64_GOT16_LO_DS:
8925 case R_PPC64_TOC16_LO:
8926 case R_PPC64_TOC16_LO_DS:
8927 insn_check = check_lo;
8928 break;
8929 }
560c8763 8930
d4f1ee75
AM		 8931 if (insn_check != no_check)
8932 {
8933 bfd_vma off = rel->r_offset & ~3;
8934 unsigned char buf[4];
8935 unsigned int insn;
c5614fa4 8936
d4f1ee75
AM		 8937 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8938 {
8939 free (used);
8940 goto error_ret;
8941 }
8942 insn = bfd_get_32 (ibfd, buf);
8943 if (insn_check == check_lo
8944 ? !ok_lo_toc_insn (insn)
8945 : ((insn & ((0x3f << 26) | 0x1f << 16))
8946 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8947 {
8948 char str[12];
8949
8950 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8951 sprintf (str, "%#08x", insn);
8952 info->callbacks->einfo
8953 (_("%P: %H: toc optimization is not supported for"
8954 " %s instruction.\n"),
8955 ibfd, sec, rel->r_offset & ~3, str);
8956 }
8957 }
c5614fa4 8958
d4f1ee75
AM		 8959 switch (r_type)
8960 {
8961 case R_PPC64_TOC16:
8962 case R_PPC64_TOC16_LO:
8963 case R_PPC64_TOC16_HI:
8964 case R_PPC64_TOC16_HA:
8965 case R_PPC64_TOC16_DS:
8966 case R_PPC64_TOC16_LO_DS:
8967 /* In case we're taking addresses of toc entries. */
8968 case R_PPC64_ADDR64:
8969 break;
c5614fa4 8970
d4f1ee75
AM		 8971 default:
8972 continue;
8973 }
c5614fa4 8974
d4f1ee75
AM		 8975 r_symndx = ELF64_R_SYM (rel->r_info);
8976 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8977 r_symndx, ibfd))
8978 {
8979 free (used);
8980 goto error_ret;
8981 }
c5614fa4 8982
d4f1ee75
AM		 8983 if (sym_sec != toc)
8984 continue;
c5614fa4 8985
d4f1ee75
AM		 8986 if (h != NULL)
8987 val = h->root.u.def.value;
8988 else
8989 val = sym->st_value;
8990 val += rel->r_addend;
ba761f19 8991
d4f1ee75
AM		 8992 if (val >= toc->size)
8993 continue;
ba761f19 8994
d4f1ee75
AM		 8995 if ((skip[val >> 3] & can_optimize) != 0)
8996 {
8997 bfd_vma off;
8998 unsigned char opc;
8999
9000 switch (r_type)
9001 {
9002 case R_PPC64_TOC16_HA:
ba761f19 9003 break;
ba761f19 9004
d4f1ee75
AM		 9005 case R_PPC64_TOC16_LO_DS:
9006 off = rel->r_offset;
9007 off += (bfd_big_endian (ibfd) ? -2 : 3);
9008 if (!bfd_get_section_contents (ibfd, sec, &opc,
9009 off, 1))
9010 {
9011 free (used);
9012 goto error_ret;
9013 }
9014 if ((opc & (0x3f << 2)) == (58u << 2))
9015 break;
9016 /* Fall thru */
ba761f19 9017
d4f1ee75
AM		 9018 default:
9019 /* Wrong sort of reloc, or not a ld. We may
9020 as well clear ref_from_discarded too. */
9021 skip[val >> 3] = 0;
9022 }
9023 }
9024
9025 if (sec != toc)
9026 used[val >> 3] = 1;
9027 /* For the toc section, we only mark as used if this
9028 entry itself isn't unused. */
9029 else if ((used[rel->r_offset >> 3]
9030 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9031 && !used[val >> 3])
9032 {
9033 /* Do all the relocs again, to catch reference
9034 chains. */
9035 repeat = 1;
9036 used[val >> 3] = 1;
9037 }
9038 }
9039 }
c5614fa4 9040 while (repeat);
854b41e7
AM		 9041
9042 if (elf_section_data (sec)->relocs != relstart)
9043 free (relstart);
c5614fa4
AM		 9044 }
9045
9046 /* Merge the used and skip arrays. Assume that TOC
9047 doublewords not appearing as either used or unused belong
9048 to to an entry more than one doubleword in size. */
9049 for (drop = skip, keep = used, last = 0, some_unused = 0;
9050 drop < skip + (toc->size + 7) / 8;
9051 ++drop, ++keep)
9052 {
9053 if (*keep)
9054 {
ba761f19
AM		 9055 *drop &= ~ref_from_discarded;
9056 if ((*drop & can_optimize) != 0)
9057 some_unused = 1;
c5614fa4
AM		 9058 last = 0;
9059 }
b140b010 9060 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9061 {
9062 some_unused = 1;
ba761f19 9063 last = ref_from_discarded;
c5614fa4
AM		 9064 }
9065 else
9066 *drop = last;
9067 }
9068
9069 free (used);
9070
9071 if (some_unused)
9072 {
9073 bfd_byte *contents, *src;
9074 unsigned long off;
d62b3684 9075 Elf_Internal_Sym *sym;
ba761f19 9076 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9077
9078 /* Shuffle the toc contents, and at the same time convert the
9079 skip array from booleans into offsets. */
9080 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9081 goto error_ret;
9082
9083 elf_section_data (toc)->this_hdr.contents = contents;
9084
9085 for (src = contents, off = 0, drop = skip;
9086 src < contents + toc->size;
9087 src += 8, ++drop)
9088 {
ba761f19
AM		 9089 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9090 off += 8;
c5614fa4
AM		 9091 else if (off != 0)
9092 {
9093 *drop = off;
9094 memcpy (src - off, src, 8);
9095 }
9096 }
854b41e7 9097 *drop = off;
c5614fa4
AM		 9098 toc->rawsize = toc->size;
9099 toc->size = src - contents - off;
9100
ba761f19
AM		 9101 /* Adjust addends for relocs against the toc section sym,
9102 and optimize any accesses we can. */
c5614fa4
AM		 9103 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9104 {
9105 if (sec->reloc_count == 0
dbaa2011 9106 || discarded_section (sec))
c5614fa4
AM		 9107 continue;
9108
9109 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9110 info->keep_memory);
c5614fa4
AM		 9111 if (relstart == NULL)
9112 goto error_ret;
9113
9114 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9115 {
9116 enum elf_ppc64_reloc_type r_type;
9117 unsigned long r_symndx;
9118 asection *sym_sec;
9119 struct elf_link_hash_entry *h;
854b41e7 9120 bfd_vma val;
c5614fa4
AM		 9121
9122 r_type = ELF64_R_TYPE (rel->r_info);
9123 switch (r_type)
9124 {
9125 default:
9126 continue;
9127
9128 case R_PPC64_TOC16:
9129 case R_PPC64_TOC16_LO:
9130 case R_PPC64_TOC16_HI:
9131 case R_PPC64_TOC16_HA:
9132 case R_PPC64_TOC16_DS:
9133 case R_PPC64_TOC16_LO_DS:
9134 case R_PPC64_ADDR64:
9135 break;
9136 }
9137
9138 r_symndx = ELF64_R_SYM (rel->r_info);
9139 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9140 r_symndx, ibfd))
9141 goto error_ret;
9142
ba761f19 9143 if (sym_sec != toc)
c5614fa4
AM		 9144 continue;
9145
ba761f19
AM		 9146 if (h != NULL)
9147 val = h->root.u.def.value;
9148 else
9149 {
9150 val = sym->st_value;
9151 if (val != 0)
9152 local_toc_syms = TRUE;
9153 }
9154
9155 val += rel->r_addend;
854b41e7
AM		 9156
9157 if (val > toc->rawsize)
9158 val = toc->rawsize;
ba761f19
AM		 9159 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9160 continue;
9161 else if ((skip[val >> 3] & can_optimize) != 0)
9162 {
9163 Elf_Internal_Rela *tocrel
425b145b 9164 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9165 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9166
9167 switch (r_type)
9168 {
9169 case R_PPC64_TOC16_HA:
9170 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9171 break;
9172
9173 case R_PPC64_TOC16_LO_DS:
9174 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9175 break;
9176
9177 default:
28942f62
AM		 9178 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9179 ppc_howto_init ();
b140b010 9180 info->callbacks->einfo
bc30df16 9181 (_("%P: %H: %s references "
b140b010
AM		 9182 "optimized away TOC entry\n"),
9183 ibfd, sec, rel->r_offset,
9184 ppc64_elf_howto_table[r_type]->name);
9185 bfd_set_error (bfd_error_bad_value);
9186 goto error_ret;
ba761f19
AM		 9187 }
9188 rel->r_addend = tocrel->r_addend;
9189 elf_section_data (sec)->relocs = relstart;
9190 continue;
9191 }
9192
9193 if (h != NULL || sym->st_value != 0)
9194 continue;
854b41e7
AM		 9195
9196 rel->r_addend -= skip[val >> 3];
9197 elf_section_data (sec)->relocs = relstart;
c5614fa4 9198 }
854b41e7
AM		 9199
9200 if (elf_section_data (sec)->relocs != relstart)
9201 free (relstart);
c5614fa4
AM		 9202 }
9203
9204 /* We shouldn't have local or global symbols defined in the TOC,
9205 but handle them anyway. */
df22d223
AM		 9206 if (local_syms != NULL)
9207 for (sym = local_syms;
9208 sym < local_syms + symtab_hdr->sh_info;
9209 ++sym)
9210 if (sym->st_value != 0
9211 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9212 {
9213 unsigned long i;
854b41e7 9214
df22d223
AM		 9215 if (sym->st_value > toc->rawsize)
9216 i = toc->rawsize >> 3;
9217 else
9218 i = sym->st_value >> 3;
854b41e7 9219
df22d223
AM		 9220 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9221 {
9222 if (local_toc_syms)
9223 (*_bfd_error_handler)
9224 (_("%s defined on removed toc entry"),
9225 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9226 do
9227 ++i;
9228 while ((skip[i] & (ref_from_discarded | can_optimize)));
9229 sym->st_value = (bfd_vma) i << 3;
9230 }
d62b3684 9231
df22d223
AM		 9232 sym->st_value -= skip[i];
9233 symtab_hdr->contents = (unsigned char *) local_syms;
9234 }
c5614fa4 9235
854b41e7 9236 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9237 if (toc_inf.global_toc_syms)
9238 {
9239 toc_inf.toc = toc;
9240 toc_inf.skip = skip;
9241 toc_inf.global_toc_syms = FALSE;
9242 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9243 &toc_inf);
9244 }
854b41e7
AM		 9245
9246 if (toc->reloc_count != 0)
9247 {
d4730f92 9248 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9249 Elf_Internal_Rela *wrel;
9250 bfd_size_type sz;
9251
854b41e7 9252 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9253 if (toc_relocs == NULL)
9254 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9255 info->keep_memory);
9256 if (toc_relocs == NULL)
9257 goto error_ret;
9258
425b145b
AM		 9259 wrel = toc_relocs;
9260 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9261 if ((skip[rel->r_offset >> 3]
9262 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9263 {
9264 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9265 wrel->r_info = rel->r_info;
9266 wrel->r_addend = rel->r_addend;
9267 ++wrel;
9268 }
9269 else if (!dec_dynrel_count (rel->r_info, toc, info,
9270 &local_syms, NULL, NULL))
9271 goto error_ret;
9272
425b145b
AM		 9273 elf_section_data (toc)->relocs = toc_relocs;
9274 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9275 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9276 sz = rel_hdr->sh_entsize;
9277 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9278 }
c5614fa4 9279 }
28be611c
AM		 9280 else if (toc_relocs != NULL
9281 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9282 free (toc_relocs);
c5614fa4
AM		 9283
9284 if (local_syms != NULL
9285 && symtab_hdr->contents != (unsigned char *) local_syms)
9286 {
9287 if (!info->keep_memory)
9288 free (local_syms);
9289 else
9290 symtab_hdr->contents = (unsigned char *) local_syms;
9291 }
9292 free (skip);
9293 }
9294
9295 return TRUE;
9296}
9297
1bbe0902
AM		 9298/* Return true iff input section I references the TOC using
9299 instructions limited to +/-32k offsets. */
9300
9301bfd_boolean
9302ppc64_elf_has_small_toc_reloc (asection *i)
9303{
9304 return (is_ppc64_elf (i->owner)
9305 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9306}
9307
927be08e
AM		 9308/* Allocate space for one GOT entry. */
9309
9310static void
9311allocate_got (struct elf_link_hash_entry *h,
9312 struct bfd_link_info *info,
9313 struct got_entry *gent)
9314{
9315 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9316 bfd_boolean dyn;
9317 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9318 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9319 ? 16 : 8);
9320 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9321 ? 2 : 1) * sizeof (Elf64_External_Rela);
9322 asection *got = ppc64_elf_tdata (gent->owner)->got;
9323
9324 gent->got.offset = got->size;
9325 got->size += entsize;
9326
9327 dyn = htab->elf.dynamic_sections_created;
19e08130 9328 if (h->type == STT_GNU_IFUNC)
927be08e 9329 {
33e44f2e 9330 htab->elf.irelplt->size += rentsize;
19e08130 9331 htab->got_reli_size += rentsize;
927be08e 9332 }
19e08130
AM		 9333 else if ((info->shared
9334 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9335 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9336 || h->root.type != bfd_link_hash_undefweak))
927be08e 9337 {
19e08130 9338 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9339 relgot->size += rentsize;
927be08e
AM		 9340 }
9341}
9342
7865406b
AM		 9343/* This function merges got entries in the same toc group. */
9344
9345static void
9346merge_got_entries (struct got_entry **pent)
9347{
9348 struct got_entry *ent, *ent2;
9349
9350 for (ent = *pent; ent != NULL; ent = ent->next)
9351 if (!ent->is_indirect)
9352 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9353 if (!ent2->is_indirect
9354 && ent2->addend == ent->addend
9355 && ent2->tls_type == ent->tls_type
9356 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9357 {
9358 ent2->is_indirect = TRUE;
9359 ent2->got.ent = ent;
9360 }
9361}
9362
65f38f15
AM		 9363/* Allocate space in .plt, .got and associated reloc sections for
9364 dynamic relocs. */
5bd4f169 9365
b34976b6 9366static bfd_boolean
4ce794b7 9367allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9368{
65f38f15
AM		 9369 struct bfd_link_info *info;
9370 struct ppc_link_hash_table *htab;
5bd4f169 9371 asection *s;
65f38f15 9372 struct ppc_link_hash_entry *eh;
6061a67d 9373 struct elf_dyn_relocs *p;
0b8bcf0d 9374 struct got_entry **pgent, *gent;
5bd4f169 9375
e92d460e 9376 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9377 return TRUE;
5bd4f169 9378
65f38f15
AM		 9379 info = (struct bfd_link_info *) inf;
9380 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9381 if (htab == NULL)
9382 return FALSE;
5bd4f169 9383
e054468f
AM		 9384 if ((htab->elf.dynamic_sections_created
9385 && h->dynindx != -1
9386 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9387 || h->type == STT_GNU_IFUNC)
5bd4f169 9388 {
411e1bfb
AM		 9389 struct plt_entry *pent;
9390 bfd_boolean doneone = FALSE;
9391 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9392 if (pent->plt.refcount > 0)
9393 {
25f23106
AM		 9394 if (!htab->elf.dynamic_sections_created
9395 || h->dynindx == -1)
e054468f 9396 {
33e44f2e 9397 s = htab->elf.iplt;
e054468f 9398 pent->plt.offset = s->size;
b9e5796b 9399 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9400 s = htab->elf.irelplt;
e054468f
AM		 9401 }
9402 else
9403 {
9404 /* If this is the first .plt entry, make room for the special
9405 first entry. */
33e44f2e 9406 s = htab->elf.splt;
e054468f 9407 if (s->size == 0)
b9e5796b 9408 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9409
9410 pent->plt.offset = s->size;
9411
9412 /* Make room for this entry. */
b9e5796b 9413 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9414
9415 /* Make room for the .glink code. */
9416 s = htab->glink;
9417 if (s->size == 0)
9418 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9419 if (htab->opd_abi)
9420 {
9421 /* We need bigger stubs past index 32767. */
9422 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9423 s->size += 4;
9424 s->size += 2*4;
9425 }
9426 else
e054468f 9427 s->size += 4;
e054468f
AM		 9428
9429 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9430 s = htab->elf.srelplt;
e054468f 9431 }
eea6121a 9432 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9433 doneone = TRUE;
9434 }
9435 else
9436 pent->plt.offset = (bfd_vma) -1;
9437 if (!doneone)
65f38f15 9438 {
411e1bfb 9439 h->plt.plist = NULL;
f5385ebf 9440 h->needs_plt = 0;
65f38f15
AM		 9441 }
9442 }
9443 else
9444 {
411e1bfb 9445 h->plt.plist = NULL;
f5385ebf 9446 h->needs_plt = 0;
65f38f15
AM		 9447 }
9448
951fd09b
AM		 9449 eh = (struct ppc_link_hash_entry *) h;
9450 /* Run through the TLS GD got entries first if we're changing them
9451 to TPREL. */
e7b938ca 9452 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9453 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9454 if (gent->got.refcount > 0
9455 && (gent->tls_type & TLS_GD) != 0)
9456 {
9457 /* This was a GD entry that has been converted to TPREL. If
9458 there happens to be a TPREL entry we can use that one. */
9459 struct got_entry *ent;
9460 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9461 if (ent->got.refcount > 0
9462 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9463 && ent->addend == gent->addend
9464 && ent->owner == gent->owner)
951fd09b
AM		 9465 {
9466 gent->got.refcount = 0;
9467 break;
9468 }
9469
9470 /* If not, then we'll be using our own TPREL entry. */
9471 if (gent->got.refcount != 0)
9472 gent->tls_type = TLS_TLS | TLS_TPREL;
9473 }
9474
7865406b
AM		 9475 /* Remove any list entry that won't generate a word in the GOT before
9476 we call merge_got_entries. Otherwise we risk merging to empty
9477 entries. */
0b8bcf0d
AM		 9478 pgent = &h->got.glist;
9479 while ((gent = *pgent) != NULL)
411e1bfb 9480 if (gent->got.refcount > 0)
7865406b
AM		 9481 {
9482 if ((gent->tls_type & TLS_LD) != 0
9483 && !h->def_dynamic)
9484 {
9485 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9486 *pgent = gent->next;
9487 }
9488 else
9489 pgent = &gent->next;
9490 }
9491 else
9492 *pgent = gent->next;
9493
9494 if (!htab->do_multi_toc)
9495 merge_got_entries (&h->got.glist);
9496
9497 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9498 if (!gent->is_indirect)
411e1bfb
AM		 9499 {
9500 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9501 Undefined weak syms won't yet be marked as dynamic,
9502 nor will all TLS symbols. */
411e1bfb 9503 if (h->dynindx == -1
b099ab9f 9504 && !h->forced_local
25f23106 9505 && h->type != STT_GNU_IFUNC
b099ab9f 9506 && htab->elf.dynamic_sections_created)
411e1bfb 9507 {
c152c796 9508 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9509 return FALSE;
9510 }
65f38f15 9511
0c8d6e5c 9512 if (!is_ppc64_elf (gent->owner))
927be08e 9513 abort ();
0ffa91dd 9514
927be08e 9515 allocate_got (h, info, gent);
411e1bfb 9516 }
65f38f15 9517
b099ab9f 9518 if (eh->dyn_relocs == NULL
25f23106 9519 || (!htab->elf.dynamic_sections_created
14b5f73f 9520 && h->type != STT_GNU_IFUNC))
b34976b6 9521 return TRUE;
65f38f15
AM		 9522
9523 /* In the shared -Bsymbolic case, discard space allocated for
9524 dynamic pc-relative relocs against symbols which turn out to be
9525 defined in regular objects. For the normal shared case, discard
9526 space for relocs that have become local due to symbol visibility
9527 changes. */
9528
9529 if (info->shared)
9530 {
9c7a29a3 9531 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9532 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9533 generated via assembly. We want calls to protected symbols to
9534 resolve directly to the function rather than going via the plt.
9535 If people want function pointer comparisons to work as expected
9536 then they should avoid writing weird assembly. */
09695f56 9537 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9538 {
6061a67d 9539 struct elf_dyn_relocs **pp;
65f38f15
AM		 9540
9541 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9542 {
65f38f15
AM		 9543 p->count -= p->pc_count;
9544 p->pc_count = 0;
9545 if (p->count == 0)
9546 *pp = p->next;
9547 else
9548 pp = &p->next;
5bd4f169 9549 }
65f38f15 9550 }
4e795f50
AM		 9551
9552 /* Also discard relocs on undefined weak syms with non-default
9553 visibility. */
cab87ef9
AM		 9554 if (eh->dyn_relocs != NULL
9555 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9556 {
9557 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9558 eh->dyn_relocs = NULL;
9559
9560 /* Make sure this symbol is output as a dynamic symbol.
9561 Undefined weak syms won't yet be marked as dynamic. */
9562 else if (h->dynindx == -1
9563 && !h->forced_local)
9564 {
9565 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9566 return FALSE;
9567 }
9568 }
65f38f15 9569 }
25f23106
AM		 9570 else if (h->type == STT_GNU_IFUNC)
9571 {
9572 if (!h->non_got_ref)
9573 eh->dyn_relocs = NULL;
9574 }
f4656909 9575 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9576 {
9577 /* For the non-shared case, discard space for relocs against
9578 symbols which turn out to need copy relocs or are not
9579 dynamic. */
9580
f5385ebf 9581 if (!h->non_got_ref
f5385ebf 9582 && !h->def_regular)
65f38f15
AM		 9583 {
9584 /* Make sure this symbol is output as a dynamic symbol.
9585 Undefined weak syms won't yet be marked as dynamic. */
9586 if (h->dynindx == -1
f5385ebf 9587 && !h->forced_local)
65f38f15 9588 {
c152c796 9589 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9590 return FALSE;
65f38f15
AM		 9591 }
9592
9593 /* If that succeeded, we know we'll be keeping all the
9594 relocs. */
9595 if (h->dynindx != -1)
9596 goto keep;
9597 }
9598
9599 eh->dyn_relocs = NULL;
9600
ec338859 9601 keep: ;
65f38f15
AM		 9602 }
9603
9604 /* Finally, allocate space. */
9605 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9606 {
9607 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9608 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9609 sreloc = htab->elf.irelplt;
eea6121a 9610 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9611 }
9612
b34976b6 9613 return TRUE;
65f38f15
AM		 9614}
9615
a345bc8d
AM		 9616/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9617 to set up space for global entry stubs. These are put in glink,
9618 after the branch table. */
65f38f15 9619
b34976b6 9620static bfd_boolean
a345bc8d 9621size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9622{
a345bc8d
AM		 9623 struct bfd_link_info *info;
9624 struct ppc_link_hash_table *htab;
9625 struct plt_entry *pent;
9626 asection *s;
65f38f15 9627
a345bc8d
AM		 9628 if (h->root.type == bfd_link_hash_indirect)
9629 return TRUE;
65f38f15 9630
a345bc8d
AM		 9631 if (!h->pointer_equality_needed)
9632 return TRUE;
65f38f15 9633
a345bc8d
AM		 9634 if (h->def_regular)
9635 return TRUE;
65f38f15 9636
a345bc8d
AM		 9637 info = inf;
9638 htab = ppc_hash_table (info);
9639 if (htab == NULL)
9640 return FALSE;
9641
9642 s = htab->glink;
9643 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9644 if (pent->plt.offset != (bfd_vma) -1
9645 && pent->addend == 0)
9646 {
afe397ea
AM		 9647 /* For ELFv2, if this symbol is not defined in a regular file
9648 and we are not generating a shared library or pie, then we
9649 need to define the symbol in the executable on a call stub.
9650 This is to avoid text relocations. */
a345bc8d 9651 s->size = (s->size + 15) & -16;
afe397ea
AM		 9652 h->root.u.def.section = s;
9653 h->root.u.def.value = s->size;
a345bc8d
AM		 9654 s->size += 16;
9655 break;
9656 }
9657 return TRUE;
9658}
9659
9660/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9661 read-only sections. */
9662
9663static bfd_boolean
9664maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9665{
9666 if (h->root.type == bfd_link_hash_indirect)
9667 return TRUE;
9668
9669 if (readonly_dynrelocs (h))
9670 {
9671 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9672
9673 /* Not an error, just cut short the traversal. */
9674 return FALSE;
65f38f15 9675 }
b34976b6 9676 return TRUE;
65f38f15
AM		 9677}
9678
9679/* Set the sizes of the dynamic sections. */
9680
b34976b6 9681static bfd_boolean
ee67d69a 9682ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9683 struct bfd_link_info *info)
65f38f15
AM		 9684{
9685 struct ppc_link_hash_table *htab;
9686 bfd *dynobj;
9687 asection *s;
b34976b6 9688 bfd_boolean relocs;
65f38f15 9689 bfd *ibfd;
7865406b 9690 struct got_entry *first_tlsld;
65f38f15
AM		 9691
9692 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9693 if (htab == NULL)
9694 return FALSE;
9695
65f38f15
AM		 9696 dynobj = htab->elf.dynobj;
9697 if (dynobj == NULL)
9698 abort ();
9699
9700 if (htab->elf.dynamic_sections_created)
9701 {
9702 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9703 if (info->executable)
65f38f15 9704 {
3d4d4302 9705 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9706 if (s == NULL)
9707 abort ();
eea6121a 9708 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9709 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9710 }
9711 }
9712
9713 /* Set up .got offsets for local syms, and space for local dynamic
9714 relocs. */
c72f2fb2 9715 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9716 {
411e1bfb
AM		 9717 struct got_entry **lgot_ents;
9718 struct got_entry **end_lgot_ents;
e054468f
AM		 9719 struct plt_entry **local_plt;
9720 struct plt_entry **end_local_plt;
f961d9dd 9721 unsigned char *lgot_masks;
65f38f15
AM		 9722 bfd_size_type locsymcount;
9723 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9724
0c8d6e5c 9725 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9726 continue;
9727
9728 for (s = ibfd->sections; s != NULL; s = s->next)
9729 {
19e08130 9730 struct ppc_dyn_relocs *p;
65f38f15 9731
6edfbbad 9732 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9733 {
ec338859
AM		 9734 if (!bfd_is_abs_section (p->sec)
9735 && bfd_is_abs_section (p->sec->output_section))
9736 {
9737 /* Input section has been discarded, either because
9738 it is a copy of a linkonce section or due to
9739 linker script /DISCARD/, so we'll be discarding
9740 the relocs too. */
9741 }
248866a8 9742 else if (p->count != 0)
ec338859 9743 {
19e08130
AM		 9744 asection *srel = elf_section_data (p->sec)->sreloc;
9745 if (p->ifunc)
33e44f2e 9746 srel = htab->elf.irelplt;
eea6121a 9747 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9748 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9749 info->flags |= DF_TEXTREL;
ec338859 9750 }
65f38f15
AM		 9751 }
9752 }
9753
411e1bfb
AM		 9754 lgot_ents = elf_local_got_ents (ibfd);
9755 if (!lgot_ents)
65f38f15
AM		 9756 continue;
9757
0ffa91dd 9758 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9759 locsymcount = symtab_hdr->sh_info;
411e1bfb 9760 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9761 local_plt = (struct plt_entry **) end_lgot_ents;
9762 end_local_plt = local_plt + locsymcount;
f961d9dd 9763 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9764 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9765 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9766 {
0b8bcf0d 9767 struct got_entry **pent, *ent;
411e1bfb 9768
0b8bcf0d
AM		 9769 pent = lgot_ents;
9770 while ((ent = *pent) != NULL)
411e1bfb
AM		 9771 if (ent->got.refcount > 0)
9772 {
e7b938ca 9773 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9774 {
927be08e 9775 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9776 *pent = ent->next;
411e1bfb
AM		 9777 }
9778 else
9779 {
19e08130
AM		 9780 unsigned int ent_size = 8;
9781 unsigned int rel_size = sizeof (Elf64_External_Rela);
9782
eea6121a 9783 ent->got.offset = s->size;
e7b938ca 9784 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9785 {
19e08130
AM		 9786 ent_size *= 2;
9787 rel_size *= 2;
9788 }
9789 s->size += ent_size;
9790 if ((*lgot_masks & PLT_IFUNC) != 0)
9791 {
33e44f2e 9792 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9793 htab->got_reli_size += rel_size;
9794 }
9795 else if (info->shared)
9796 {
9797 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9798 srel->size += rel_size;
927be08e 9799 }
0b8bcf0d 9800 pent = &ent->next;
411e1bfb
AM		 9801 }
9802 }
9803 else
0b8bcf0d 9804 *pent = ent->next;
65f38f15 9805 }
e054468f
AM		 9806
9807 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9808 for (; local_plt < end_local_plt; ++local_plt)
9809 {
9810 struct plt_entry *ent;
9811
9812 for (ent = *local_plt; ent != NULL; ent = ent->next)
9813 if (ent->plt.refcount > 0)
9814 {
33e44f2e 9815 s = htab->elf.iplt;
e054468f 9816 ent->plt.offset = s->size;
b9e5796b 9817 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9818
33e44f2e 9819 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9820 }
9821 else
9822 ent->plt.offset = (bfd_vma) -1;
9823 }
65f38f15
AM		 9824 }
9825
9826 /* Allocate global sym .plt and .got entries, and space for global
9827 sym dynamic relocs. */
4ce794b7 9828 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9829 /* Stash the end of glink branch table. */
9830 if (htab->glink != NULL)
9831 htab->glink->rawsize = htab->glink->size;
9832
9833 if (!htab->opd_abi && !info->shared)
9834 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9835
7865406b 9836 first_tlsld = NULL;
c72f2fb2 9837 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9838 {
7865406b
AM		 9839 struct got_entry *ent;
9840
0c8d6e5c 9841 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9842 continue;
9843
7865406b
AM		 9844 ent = ppc64_tlsld_got (ibfd);
9845 if (ent->got.refcount > 0)
102890f0 9846 {
7865406b 9847 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9848 {
7865406b
AM		 9849 ent->is_indirect = TRUE;
9850 ent->got.ent = first_tlsld;
9851 }
9852 else
9853 {
9854 if (first_tlsld == NULL)
9855 first_tlsld = ent;
9856 s = ppc64_elf_tdata (ibfd)->got;
9857 ent->got.offset = s->size;
9858 ent->owner = ibfd;
9859 s->size += 16;
9860 if (info->shared)
9861 {
9862 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9863 srel->size += sizeof (Elf64_External_Rela);
9864 }
102890f0
AM		 9865 }
9866 }
9867 else
7865406b 9868 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9869 }
9870
65f38f15
AM		 9871 /* We now have determined the sizes of the various dynamic sections.
9872 Allocate memory for them. */
b34976b6 9873 relocs = FALSE;
65f38f15
AM		 9874 for (s = dynobj->sections; s != NULL; s = s->next)
9875 {
9876 if ((s->flags & SEC_LINKER_CREATED) == 0)
9877 continue;
9878
4ce794b7 9879 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9880 /* These haven't been allocated yet; don't strip. */
9881 continue;
33e44f2e
AM		 9882 else if (s == htab->elf.sgot
9883 || s == htab->elf.splt
9884 || s == htab->elf.iplt
c456f082
AM		 9885 || s == htab->glink
9886 || s == htab->dynbss)
65f38f15
AM		 9887 {
9888 /* Strip this section if we don't need it; see the
9889 comment below. */
5bd4f169 9890 }
58d180e8
AM		 9891 else if (s == htab->glink_eh_frame)
9892 {
9893 if (!bfd_is_abs_section (s->output_section))
9894 /* Not sized yet. */
9895 continue;
9896 }
70cc837d 9897 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9898 {
c456f082 9899 if (s->size != 0)
5bd4f169 9900 {
33e44f2e 9901 if (s != htab->elf.srelplt)
b34976b6 9902 relocs = TRUE;
5bd4f169
AM		 9903
9904 /* We use the reloc_count field as a counter if we need
9905 to copy relocs into the output file. */
9906 s->reloc_count = 0;
9907 }
9908 }
65f38f15 9909 else
5bd4f169
AM		 9910 {
9911 /* It's not one of our sections, so don't allocate space. */
9912 continue;
9913 }
9914
eea6121a 9915 if (s->size == 0)
5bd4f169 9916 {
c456f082
AM		 9917 /* If we don't need this section, strip it from the
9918 output file. This is mostly to handle .rela.bss and
9919 .rela.plt. We must create both sections in
9920 create_dynamic_sections, because they must be created
9921 before the linker maps input sections to output
9922 sections. The linker does that before
9923 adjust_dynamic_symbol is called, and it is that
9924 function which decides whether anything needs to go
9925 into these sections. */
8423293d 9926 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9927 continue;
9928 }
9929
c456f082 9930 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9931 continue;
9932
65f38f15
AM		 9933 /* Allocate memory for the section contents. We use bfd_zalloc
9934 here in case unused entries are not reclaimed before the
9935 section's contents are written out. This should not happen,
411e1bfb
AM		 9936 but this way if it does we get a R_PPC64_NONE reloc in .rela
9937 sections instead of garbage.
9938 We also rely on the section contents being zero when writing
9939 the GOT. */
eea6121a 9940 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9941 if (s->contents == NULL)
b34976b6 9942 return FALSE;
5bd4f169
AM		 9943 }
9944
c72f2fb2 9945 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9946 {
0c8d6e5c 9947 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9948 continue;
9949
e717da7e 9950 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9951 if (s != NULL && s != htab->elf.sgot)
e717da7e 9952 {
eea6121a 9953 if (s->size == 0)
8423293d 9954 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9955 else
9956 {
eea6121a 9957 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9958 if (s->contents == NULL)
9959 return FALSE;
9960 }
9961 }
9962 s = ppc64_elf_tdata (ibfd)->relgot;
9963 if (s != NULL)
9964 {
eea6121a 9965 if (s->size == 0)
8423293d 9966 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9967 else
9968 {
eea6121a 9969 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9970 if (s->contents == NULL)
9971 return FALSE;
9972 relocs = TRUE;
9973 s->reloc_count = 0;
9974 }
9975 }
9976 }
9977
e86ce104 9978 if (htab->elf.dynamic_sections_created)
5bd4f169 9979 {
e8910a83
AM		 9980 bfd_boolean tls_opt;
9981
5bd4f169
AM		 9982 /* Add some entries to the .dynamic section. We fill in the
9983 values later, in ppc64_elf_finish_dynamic_sections, but we
9984 must add the entries now so that we get the correct size for
9985 the .dynamic section. The DT_DEBUG entry is filled in by the
9986 dynamic linker and used by the debugger. */
dc810e39 9987#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9988 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9989
36af4a4e 9990 if (info->executable)
5bd4f169 9991 {
dc810e39 9992 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9993 return FALSE;
5bd4f169
AM		 9994 }
9995
33e44f2e 9996 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 9997 {
dc810e39
AM		 9998 if (!add_dynamic_entry (DT_PLTGOT, 0)
9999 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10000 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 10001 || !add_dynamic_entry (DT_JMPREL, 0)
10002 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 10003 return FALSE;
5bd4f169
AM		 10004 }
10005
ee67d69a 10006 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 10007 {
10008 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10009 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 10010 return FALSE;
19397422
AM		 10011 }
10012
e7d1c40c 10013 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 10014 && htab->tls_get_addr_fd != NULL
10015 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10016 if (tls_opt || !htab->opd_abi)
10017 {
10018 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10019 return FALSE;
10020 }
a7f2871e 10021
5bd4f169
AM		 10022 if (relocs)
10023 {
dc810e39
AM		 10024 if (!add_dynamic_entry (DT_RELA, 0)
10025 || !add_dynamic_entry (DT_RELASZ, 0)
10026 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10027 return FALSE;
5bd4f169 10028
65f38f15
AM		 10029 /* If any dynamic relocs apply to a read-only section,
10030 then we need a DT_TEXTREL entry. */
248866a8 10031 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10032 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10033
65f38f15 10034 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10035 {
65f38f15 10036 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10037 return FALSE;
5bd4f169 10038 }
5bd4f169 10039 }
5bd4f169 10040 }
65f38f15 10041#undef add_dynamic_entry
5bd4f169 10042
b34976b6 10043 return TRUE;
5bd4f169
AM		 10044}
10045
a345bc8d
AM		 10046/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10047
10048static bfd_boolean
10049ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10050{
10051 if (h->plt.plist != NULL
10052 && !h->def_regular
10053 && !h->pointer_equality_needed)
10054 return FALSE;
10055
10056 return _bfd_elf_hash_symbol (h);
10057}
10058
721956f4 10059/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10060
4ce794b7
AM		 10061static inline enum ppc_stub_type
10062ppc_type_of_stub (asection *input_sec,
10063 const Elf_Internal_Rela *rel,
10064 struct ppc_link_hash_entry **hash,
e054468f 10065 struct plt_entry **plt_ent,
6911b7dc
AM		 10066 bfd_vma destination,
10067 unsigned long local_off)
5bd4f169 10068{
721956f4
AM		 10069 struct ppc_link_hash_entry *h = *hash;
10070 bfd_vma location;
10071 bfd_vma branch_offset;
10072 bfd_vma max_branch_offset;
4ce794b7 10073 enum elf_ppc64_reloc_type r_type;
5bd4f169 10074
721956f4
AM		 10075 if (h != NULL)
10076 {
e054468f 10077 struct plt_entry *ent;
7fe2b9a6 10078 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10079 if (h->oh != NULL
10080 && h->oh->is_func_descriptor)
7b8f6675
AM		 10081 {
10082 fdh = ppc_follow_link (h->oh);
10083 *hash = fdh;
10084 }
8387904d 10085
e054468f
AM		 10086 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10087 if (ent->addend == rel->r_addend
10088 && ent->plt.offset != (bfd_vma) -1)
10089 {
e054468f
AM		 10090 *plt_ent = ent;
10091 return ppc_stub_plt_call;
10092 }
5bd4f169 10093
7fe2b9a6
AM		 10094 /* Here, we know we don't have a plt entry. If we don't have a
10095 either a defined function descriptor or a defined entry symbol
10096 in a regular object file, then it is pointless trying to make
10097 any other type of stub. */
854b41e7
AM		 10098 if (!is_static_defined (&fdh->elf)
10099 && !is_static_defined (&h->elf))
721956f4 10100 return ppc_stub_none;
5d1634d7 10101 }
e054468f
AM		 10102 else if (elf_local_got_ents (input_sec->owner) != NULL)
10103 {
10104 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10105 struct plt_entry **local_plt = (struct plt_entry **)
10106 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10107 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10108
10109 if (local_plt[r_symndx] != NULL)
10110 {
10111 struct plt_entry *ent;
10112
10113 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10114 if (ent->addend == rel->r_addend
10115 && ent->plt.offset != (bfd_vma) -1)
10116 {
10117 *plt_ent = ent;
10118 return ppc_stub_plt_call;
10119 }
10120 }
10121 }
5d1634d7 10122
721956f4
AM		 10123 /* Determine where the call point is. */
10124 location = (input_sec->output_offset
10125 + input_sec->output_section->vma
10126 + rel->r_offset);
5d1634d7 10127
721956f4
AM		 10128 branch_offset = destination - location;
10129 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10130
721956f4
AM		 10131 /* Determine if a long branch stub is needed. */
10132 max_branch_offset = 1 << 25;
4ce794b7 10133 if (r_type != R_PPC64_REL24)
721956f4 10134 max_branch_offset = 1 << 15;
5d1634d7 10135
6911b7dc 10136 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10137 /* We need a stub. Figure out whether a long_branch or plt_branch
10138 is needed later. */
10139 return ppc_stub_long_branch;
5d1634d7 10140
721956f4 10141 return ppc_stub_none;
5d1634d7
AM		 10142}
10143
794e51c0
AM		 10144/* With power7 weakly ordered memory model, it is possible for ld.so
10145 to update a plt entry in one thread and have another thread see a
10146 stale zero toc entry. To avoid this we need some sort of acquire
10147 barrier in the call stub. One solution is to make the load of the
10148 toc word seem to appear to depend on the load of the function entry
10149 word. Another solution is to test for r2 being zero, and branch to
10150 the appropriate glink entry if so.
10151
10152 . fake dep barrier compare
71a39c98
AM		 10153 . ld 12,xxx(2) ld 12,xxx(2)
10154 . mtctr 12 mtctr 12
10155 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10156 . add 2,2,11 cmpldi 2,0
10157 . ld 2,xxx+8(2) bnectr+
10158 . bctr b <glink_entry>
10159
10160 The solution involving the compare turns out to be faster, so
10161 that's what we use unless the branch won't reach. */
10162
10163#define ALWAYS_USE_FAKE_DEP 0
10164#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10165
5d1634d7
AM		 10166#define PPC_LO(v) ((v) & 0xffff)
10167#define PPC_HI(v) (((v) >> 16) & 0xffff)
10168#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10169
794e51c0
AM		 10170static inline unsigned int
10171plt_stub_size (struct ppc_link_hash_table *htab,
10172 struct ppc_stub_hash_entry *stub_entry,
10173 bfd_vma off)
10174{
b9e5796b
AM		 10175 unsigned size = 12;
10176
10177 if (ALWAYS_EMIT_R2SAVE
10178 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10179 size += 4;
10180 if (PPC_HA (off) != 0)
794e51c0 10181 size += 4;
b9e5796b
AM		 10182 if (htab->opd_abi)
10183 {
10184 size += 4;
e7d1c40c 10185 if (htab->params->plt_static_chain)
b9e5796b 10186 size += 4;
e7d1c40c 10187 if (htab->params->plt_thread_safe)
b9e5796b 10188 size += 8;
e7d1c40c 10189 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10190 size += 4;
10191 }
794e51c0
AM		 10192 if (stub_entry->h != NULL
10193 && (stub_entry->h == htab->tls_get_addr_fd
10194 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10195 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10196 size += 13 * 4;
10197 return size;
10198}
10199
10200/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10201 then return the padding needed to do so. */
10202static inline unsigned int
10203plt_stub_pad (struct ppc_link_hash_table *htab,
10204 struct ppc_stub_hash_entry *stub_entry,
10205 bfd_vma plt_off)
10206{
e7d1c40c 10207 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0
AM		 10208 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10209 bfd_vma stub_off = stub_entry->stub_sec->size;
10210
10211 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
e05fa0ba 10212 > ((stub_size - 1) & -stub_align))
794e51c0
AM		 10213 return stub_align - (stub_off & (stub_align - 1));
10214 return 0;
10215}
10216
10217/* Build a .plt call stub. */
10218
10219static inline bfd_byte *
10220build_plt_stub (struct ppc_link_hash_table *htab,
10221 struct ppc_stub_hash_entry *stub_entry,
10222 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10223{
e7d1c40c 10224 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10225 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c
AM		 10226 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10227 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
794e51c0
AM		 10228 bfd_boolean use_fake_dep = plt_thread_safe;
10229 bfd_vma cmp_branch_off = 0;
10230
10231 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10232 && plt_load_toc
794e51c0
AM		 10233 && plt_thread_safe
10234 && !(stub_entry->h != NULL
10235 && (stub_entry->h == htab->tls_get_addr_fd
10236 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10237 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10238 {
10239 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10240 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10241 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10242 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10243 bfd_vma to, from;
10244
68d62958
AM		 10245 if (pltindex > 32768)
10246 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10247 to = (glinkoff
10248 + htab->glink->output_offset
10249 + htab->glink->output_section->vma);
10250 from = (p - stub_entry->stub_sec->contents
10251 + 4 * (ALWAYS_EMIT_R2SAVE
10252 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10253 + 4 * (PPC_HA (offset) != 0)
10254 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10255 != PPC_HA (offset))
10256 + 4 * (plt_static_chain != 0)
10257 + 20
10258 + stub_entry->stub_sec->output_offset
10259 + stub_entry->stub_sec->output_section->vma);
10260 cmp_branch_off = to - from;
10261 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10262 }
10263
ac2df442
AM		 10264 if (PPC_HA (offset) != 0)
10265 {
176a0d42
AM		 10266 if (r != NULL)
10267 {
794e51c0
AM		 10268 if (ALWAYS_EMIT_R2SAVE
10269 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10270 r[0].r_offset += 4;
176a0d42 10271 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10272 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10273 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10274 r[1].r_addend = r[0].r_addend;
b9e5796b 10275 if (plt_load_toc)
176a0d42 10276 {
b9e5796b 10277 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10278 {
b9e5796b
AM		 10279 r[2].r_offset = r[1].r_offset + 4;
10280 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10281 r[2].r_addend = r[0].r_addend;
10282 }
10283 else
10284 {
10285 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10286 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10287 r[2].r_addend = r[0].r_addend + 8;
10288 if (plt_static_chain)
10289 {
10290 r[3].r_offset = r[2].r_offset + 4;
10291 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10292 r[3].r_addend = r[0].r_addend + 16;
10293 }
c7131b65 10294 }
176a0d42
AM		 10295 }
10296 }
794e51c0
AM		 10297 if (ALWAYS_EMIT_R2SAVE
10298 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10299 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10300 if (plt_load_toc)
10301 {
10302 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10303 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10304 }
10305 else
10306 {
10307 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10308 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10309 }
b9e5796b
AM		 10310 if (plt_load_toc
10311 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10312 {
71a39c98 10313 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10314 offset = 0;
10315 }
71a39c98 10316 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10317 if (plt_load_toc)
794e51c0 10318 {
b9e5796b
AM		 10319 if (use_fake_dep)
10320 {
10321 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10322 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10323 }
10324 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10325 if (plt_static_chain)
10326 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10327 }
ac2df442
AM		 10328 }
10329 else
10330 {
176a0d42
AM		 10331 if (r != NULL)
10332 {
794e51c0
AM		 10333 if (ALWAYS_EMIT_R2SAVE
10334 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10335 r[0].r_offset += 4;
176a0d42 10336 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10337 if (plt_load_toc)
176a0d42 10338 {
b9e5796b 10339 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10340 {
b9e5796b
AM		 10341 r[1].r_offset = r[0].r_offset + 4;
10342 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10343 r[1].r_addend = r[0].r_addend;
10344 }
10345 else
10346 {
10347 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10348 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10349 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10350 if (plt_static_chain)
10351 {
10352 r[2].r_offset = r[1].r_offset + 4;
10353 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10354 r[2].r_addend = r[0].r_addend + 8;
10355 }
c7131b65 10356 }
176a0d42
AM		 10357 }
10358 }
794e51c0
AM		 10359 if (ALWAYS_EMIT_R2SAVE
10360 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10361 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10362 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10363 if (plt_load_toc
10364 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10365 {
10366 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10367 offset = 0;
10368 }
71a39c98 10369 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10370 if (plt_load_toc)
794e51c0 10371 {
b9e5796b
AM		 10372 if (use_fake_dep)
10373 {
10374 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10375 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10376 }
10377 if (plt_static_chain)
10378 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10379 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10380 }
ac2df442 10381 }
b9e5796b 10382 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10383 {
10384 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10385 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10386 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10387 }
10388 else
10389 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10390 return p;
10391}
10392
a7f2871e
AM		 10393/* Build a special .plt call stub for __tls_get_addr. */
10394
10395#define LD_R11_0R3 0xe9630000
10396#define LD_R12_0R3 0xe9830000
10397#define MR_R0_R3 0x7c601b78
10398#define CMPDI_R11_0 0x2c2b0000
10399#define ADD_R3_R12_R13 0x7c6c6a14
10400#define BEQLR 0x4d820020
10401#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10402#define STD_R11_0R1 0xf9610000
10403#define BCTRL 0x4e800421
10404#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10405#define MTLR_R11 0x7d6803a6
10406
10407static inline bfd_byte *
794e51c0
AM		 10408build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10409 struct ppc_stub_hash_entry *stub_entry,
10410 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10411{
e7d1c40c 10412 bfd *obfd = htab->params->stub_bfd;
794e51c0 10413
a7f2871e
AM		 10414 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10415 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10416 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10417 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10418 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10419 bfd_put_32 (obfd, BEQLR, p), p += 4;
10420 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10421 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10422 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10423
10424 if (r != NULL)
10425 r[0].r_offset += 9 * 4;
794e51c0 10426 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10427 bfd_put_32 (obfd, BCTRL, p - 4);
10428
a078d95a
AM		 10429 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10430 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
a7f2871e
AM		 10431 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10432 bfd_put_32 (obfd, BLR, p), p += 4;
10433
10434 return p;
10435}
10436
176a0d42
AM		 10437static Elf_Internal_Rela *
10438get_relocs (asection *sec, int count)
10439{
10440 Elf_Internal_Rela *relocs;
10441 struct bfd_elf_section_data *elfsec_data;
10442
10443 elfsec_data = elf_section_data (sec);
10444 relocs = elfsec_data->relocs;
10445 if (relocs == NULL)
10446 {
10447 bfd_size_type relsize;
10448 relsize = sec->reloc_count * sizeof (*relocs);
10449 relocs = bfd_alloc (sec->owner, relsize);
10450 if (relocs == NULL)
10451 return NULL;
10452 elfsec_data->relocs = relocs;
d4730f92
BS		 10453 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10454 sizeof (Elf_Internal_Shdr));
10455 if (elfsec_data->rela.hdr == NULL)
10456 return NULL;
10457 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10458 * sizeof (Elf64_External_Rela));
10459 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10460 sec->reloc_count = 0;
10461 }
10462 relocs += sec->reloc_count;
10463 sec->reloc_count += count;
10464 return relocs;
10465}
10466
aa374f67 10467static bfd_vma
25f53a85 10468get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10469 struct ppc_stub_hash_entry *stub_entry)
10470{
25f53a85 10471 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM		 10472 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10473
10474 if (r2off == 0)
10475 {
10476 /* Support linking -R objects. Get the toc pointer from the
10477 opd entry. */
10478 char buf[8];
b9e5796b
AM		 10479 if (!htab->opd_abi)
10480 return r2off;
aa374f67
AM		 10481 asection *opd = stub_entry->h->elf.root.u.def.section;
10482 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10483
10484 if (strcmp (opd->name, ".opd") != 0
10485 || opd->reloc_count != 0)
10486 {
bc30df16 10487 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10488 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10489 bfd_set_error (bfd_error_bad_value);
10490 return 0;
10491 }
10492 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10493 return 0;
10494 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10495 r2off -= elf_gp (info->output_bfd);
aa374f67
AM		 10496 }
10497 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10498 return r2off;
10499}
10500
b34976b6 10501static bfd_boolean
4ce794b7 10502ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10503{
721956f4
AM		 10504 struct ppc_stub_hash_entry *stub_entry;
10505 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10506 struct bfd_link_info *info;
10507 struct ppc_link_hash_table *htab;
721956f4
AM		 10508 bfd_byte *loc;
10509 bfd_byte *p;
ee75fd95 10510 bfd_vma dest, off;
721956f4 10511 int size;
176a0d42 10512 Elf_Internal_Rela *r;
e054468f 10513 asection *plt;
5d1634d7 10514
721956f4
AM		 10515 /* Massage our args to the form they really have. */
10516 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10517 info = in_arg;
5d1634d7 10518
5d1634d7 10519 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10520 if (htab == NULL)
10521 return FALSE;
5d1634d7 10522
721956f4 10523 /* Make a note of the offset within the stubs for this entry. */
eea6121a 10524 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 10525 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 10526
4ce794b7 10527 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10528 switch (stub_entry->stub_type)
5d1634d7 10529 {
721956f4 10530 case ppc_stub_long_branch:
ad8e1ba5 10531 case ppc_stub_long_branch_r2off:
721956f4 10532 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10533 dest = (stub_entry->target_value
10534 + stub_entry->target_section->output_offset
10535 + stub_entry->target_section->output_section->vma);
10536 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10537 off = dest;
5d1634d7 10538
721956f4
AM		 10539 /* And this is where we are coming from. */
10540 off -= (stub_entry->stub_offset
97b639ba
AM		 10541 + stub_entry->stub_sec->output_offset
10542 + stub_entry->stub_sec->output_section->vma);
e86ce104 10543
ac2df442
AM		 10544 size = 4;
10545 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10546 {
25f53a85 10547 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10548
aa374f67
AM		 10549 if (r2off == 0)
10550 {
10551 htab->stub_error = TRUE;
10552 return FALSE;
10553 }
e7d1c40c 10554 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10555 loc += 4;
ac2df442
AM		 10556 size = 12;
10557 if (PPC_HA (r2off) != 0)
10558 {
10559 size = 16;
e7d1c40c
AM		 10560 bfd_put_32 (htab->params->stub_bfd,
10561 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10562 loc += 4;
10563 }
e7d1c40c 10564 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10565 loc += 4;
ac2df442 10566 off -= size - 4;
ad8e1ba5 10567 }
e7d1c40c 10568 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10569
5c3dead3
AM		 10570 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10571 {
bc30df16
AM		 10572 info->callbacks->einfo
10573 (_("%P: long branch stub `%s' offset overflow\n"),
10574 stub_entry->root.string);
5c3dead3
AM		 10575 htab->stub_error = TRUE;
10576 return FALSE;
10577 }
ee75fd95
AM		 10578
10579 if (info->emitrelocations)
10580 {
176a0d42
AM		 10581 r = get_relocs (stub_entry->stub_sec, 1);
10582 if (r == NULL)
10583 return FALSE;
ee75fd95
AM		 10584 r->r_offset = loc - stub_entry->stub_sec->contents;
10585 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10586 r->r_addend = dest;
10587 if (stub_entry->h != NULL)
10588 {
10589 struct elf_link_hash_entry **hashes;
10590 unsigned long symndx;
10591 struct ppc_link_hash_entry *h;
10592
e7d1c40c 10593 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10594 if (hashes == NULL)
10595 {
10596 bfd_size_type hsize;
10597
10598 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10599 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10600 if (hashes == NULL)
10601 return FALSE;
e7d1c40c 10602 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10603 htab->stub_globals = 1;
10604 }
10605 symndx = htab->stub_globals++;
10606 h = stub_entry->h;
10607 hashes[symndx] = &h->elf;
10608 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10609 if (h->oh != NULL && h->oh->is_func)
b31867b6 10610 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10611 if (h->elf.root.u.def.section != stub_entry->target_section)
10612 /* H is an opd symbol. The addend must be zero. */
10613 r->r_addend = 0;
10614 else
10615 {
10616 off = (h->elf.root.u.def.value
10617 + h->elf.root.u.def.section->output_offset
10618 + h->elf.root.u.def.section->output_section->vma);
10619 r->r_addend -= off;
10620 }
10621 }
10622 }
721956f4 10623 break;
e86ce104 10624
721956f4 10625 case ppc_stub_plt_branch:
ad8e1ba5 10626 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10627 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10628 stub_entry->root.string + 9,
b34976b6 10629 FALSE, FALSE);
721956f4
AM		 10630 if (br_entry == NULL)
10631 {
8de848d8 10632 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10633 stub_entry->root.string);
b34976b6
AM		 10634 htab->stub_error = TRUE;
10635 return FALSE;
721956f4
AM		 10636 }
10637
176a0d42
AM		 10638 dest = (stub_entry->target_value
10639 + stub_entry->target_section->output_offset
10640 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10641 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10642 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10643
176a0d42 10644 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10645 htab->brlt->contents + br_entry->offset);
721956f4 10646
f94498ff 10647 if (br_entry->iter == htab->stub_iteration)
721956f4 10648 {
f94498ff 10649 br_entry->iter = 0;
84f5d08e 10650
f94498ff 10651 if (htab->relbrlt != NULL)
84f5d08e 10652 {
f94498ff
AM		 10653 /* Create a reloc for the branch lookup table entry. */
10654 Elf_Internal_Rela rela;
10655 bfd_byte *rl;
10656
10657 rela.r_offset = (br_entry->offset
10658 + htab->brlt->output_offset
10659 + htab->brlt->output_section->vma);
10660 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10661 rela.r_addend = dest;
f94498ff
AM		 10662
10663 rl = htab->relbrlt->contents;
10664 rl += (htab->relbrlt->reloc_count++
10665 * sizeof (Elf64_External_Rela));
10666 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10667 }
10668 else if (info->emitrelocations)
10669 {
176a0d42
AM		 10670 r = get_relocs (htab->brlt, 1);
10671 if (r == NULL)
10672 return FALSE;
10673 /* brlt, being SEC_LINKER_CREATED does not go through the
10674 normal reloc processing. Symbols and offsets are not
10675 translated from input file to output file form, so
10676 set up the offset per the output file. */
f94498ff
AM		 10677 r->r_offset = (br_entry->offset
10678 + htab->brlt->output_offset
10679 + htab->brlt->output_section->vma);
10680 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10681 r->r_addend = dest;
84f5d08e 10682 }
84f5d08e 10683 }
721956f4 10684
176a0d42
AM		 10685 dest = (br_entry->offset
10686 + htab->brlt->output_offset
10687 + htab->brlt->output_section->vma);
10688
10689 off = (dest
4ce794b7 10690 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10691 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10692
ad8e1ba5 10693 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10694 {
25f53a85 10695 info->callbacks->einfo
bc30df16 10696 (_("%P: linkage table error against `%T'\n"),
721956f4 10697 stub_entry->root.string);
5d1634d7 10698 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10699 htab->stub_error = TRUE;
10700 return FALSE;
5d1634d7 10701 }
41bd81ab 10702
176a0d42
AM		 10703 if (info->emitrelocations)
10704 {
10705 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10706 if (r == NULL)
10707 return FALSE;
10708 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10709 if (bfd_big_endian (info->output_bfd))
10710 r[0].r_offset += 2;
00f412ee 10711 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10712 r[0].r_offset += 4;
10713 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10714 r[0].r_addend = dest;
10715 if (PPC_HA (off) != 0)
10716 {
10717 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10718 r[1].r_offset = r[0].r_offset + 4;
10719 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10720 r[1].r_addend = r[0].r_addend;
10721 }
10722 }
10723
00f412ee 10724 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10725 {
176a0d42 10726 if (PPC_HA (off) != 0)
ac2df442
AM		 10727 {
10728 size = 16;
e7d1c40c 10729 bfd_put_32 (htab->params->stub_bfd,
397998fc 10730 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10731 loc += 4;
e7d1c40c 10732 bfd_put_32 (htab->params->stub_bfd,
397998fc 10733 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10734 }
10735 else
10736 {
10737 size = 12;
e7d1c40c
AM		 10738 bfd_put_32 (htab->params->stub_bfd,
10739 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10740 }
ad8e1ba5
AM		 10741 }
10742 else
10743 {
25f53a85 10744 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10745
00f412ee 10746 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10747 {
10748 htab->stub_error = TRUE;
10749 return FALSE;
10750 }
ad8e1ba5 10751
e7d1c40c 10752 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10753 loc += 4;
00f412ee 10754 size = 16;
176a0d42 10755 if (PPC_HA (off) != 0)
ac2df442
AM		 10756 {
10757 size += 4;
e7d1c40c 10758 bfd_put_32 (htab->params->stub_bfd,
397998fc 10759 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10760 loc += 4;
e7d1c40c 10761 bfd_put_32 (htab->params->stub_bfd,
397998fc 10762 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10763 }
10764 else
e7d1c40c 10765 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10766
10767 if (PPC_HA (r2off) != 0)
10768 {
10769 size += 4;
00f412ee 10770 loc += 4;
e7d1c40c
AM		 10771 bfd_put_32 (htab->params->stub_bfd,
10772 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10773 }
10774 if (PPC_LO (r2off) != 0)
10775 {
10776 size += 4;
ac2df442 10777 loc += 4;
e7d1c40c
AM		 10778 bfd_put_32 (htab->params->stub_bfd,
10779 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10780 }
ad8e1ba5
AM		 10781 }
10782 loc += 4;
e7d1c40c 10783 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10784 loc += 4;
e7d1c40c 10785 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10786 break;
5d1634d7 10787
721956f4 10788 case ppc_stub_plt_call:
794e51c0 10789 case ppc_stub_plt_call_r2save:
e054468f 10790 if (stub_entry->h != NULL
b31867b6
AM		 10791 && stub_entry->h->is_func_descriptor
10792 && stub_entry->h->oh != NULL)
c862ae31 10793 {
b31867b6
AM		 10794 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10795
10796 /* If the old-ABI "dot-symbol" is undefined make it weak so
10797 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10798 FIXME: We used to define the symbol on one of the call
10799 stubs instead, which is why we test symbol section id
10800 against htab->top_id in various places. Likely all
10801 these checks could now disappear. */
10802 if (fh->elf.root.type == bfd_link_hash_undefined)
10803 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10804 /* Stop undo_symbol_twiddle changing it back to undefined. */
10805 fh->was_undefined = 0;
c862ae31
AM		 10806 }
10807
721956f4 10808 /* Now build the stub. */
e054468f 10809 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10810 if (dest >= (bfd_vma) -2)
721956f4
AM		 10811 abort ();
10812
33e44f2e 10813 plt = htab->elf.splt;
25f23106
AM		 10814 if (!htab->elf.dynamic_sections_created
10815 || stub_entry->h == NULL
10816 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10817 plt = htab->elf.iplt;
e054468f
AM		 10818
10819 dest += plt->output_offset + plt->output_section->vma;
10820
10821 if (stub_entry->h == NULL
10822 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10823 {
10824 Elf_Internal_Rela rela;
10825 bfd_byte *rl;
10826
10827 rela.r_offset = dest;
ee67d69a
AM		 10828 if (htab->opd_abi)
10829 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10830 else
10831 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10832 rela.r_addend = (stub_entry->target_value
10833 + stub_entry->target_section->output_offset
10834 + stub_entry->target_section->output_section->vma);
10835
33e44f2e
AM		 10836 rl = (htab->elf.irelplt->contents
10837 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10838 * sizeof (Elf64_External_Rela)));
10839 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10840 stub_entry->plt_ent->plt.offset |= 1;
10841 }
176a0d42
AM		 10842
10843 off = (dest
e054468f 10844 - elf_gp (plt->output_section->owner)
176a0d42 10845 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10846
ad8e1ba5 10847 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10848 {
25f53a85 10849 info->callbacks->einfo
bc30df16 10850 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10851 stub_entry->h != NULL
10852 ? stub_entry->h->elf.root.root.string
10853 : "<local sym>");
721956f4 10854 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10855 htab->stub_error = TRUE;
10856 return FALSE;
721956f4
AM		 10857 }
10858
e7d1c40c 10859 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10860 {
10861 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10862
10863 stub_entry->stub_sec->size += pad;
10864 stub_entry->stub_offset = stub_entry->stub_sec->size;
10865 loc += pad;
10866 }
10867
176a0d42
AM		 10868 r = NULL;
10869 if (info->emitrelocations)
10870 {
10871 r = get_relocs (stub_entry->stub_sec,
3ba720c7
AM		 10872 ((PPC_HA (off) != 0)
10873 + (htab->opd_abi
e7d1c40c 10874 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10875 && PPC_HA (off + 16) == PPC_HA (off))
10876 : 1)));
176a0d42
AM		 10877 if (r == NULL)
10878 return FALSE;
10879 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10880 if (bfd_big_endian (info->output_bfd))
10881 r[0].r_offset += 2;
176a0d42
AM		 10882 r[0].r_addend = dest;
10883 }
a7f2871e
AM		 10884 if (stub_entry->h != NULL
10885 && (stub_entry->h == htab->tls_get_addr_fd
10886 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10887 && !htab->params->no_tls_get_addr_opt)
794e51c0 10888 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10889 else
794e51c0 10890 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10891 size = p - loc;
10892 break;
10893
10894 default:
10895 BFD_FAIL ();
b34976b6 10896 return FALSE;
721956f4
AM		 10897 }
10898
eea6121a 10899 stub_entry->stub_sec->size += size;
97b639ba 10900
e7d1c40c 10901 if (htab->params->emit_stub_syms)
97b639ba
AM		 10902 {
10903 struct elf_link_hash_entry *h;
ee75fd95
AM		 10904 size_t len1, len2;
10905 char *name;
10906 const char *const stub_str[] = { "long_branch",
10907 "long_branch_r2off",
10908 "plt_branch",
10909 "plt_branch_r2off",
794e51c0 10910 "plt_call",
ee75fd95
AM		 10911 "plt_call" };
10912
10913 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10914 len2 = strlen (stub_entry->root.string);
10915 name = bfd_malloc (len1 + len2 + 2);
10916 if (name == NULL)
10917 return FALSE;
10918 memcpy (name, stub_entry->root.string, 9);
10919 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10920 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10921 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10922 if (h == NULL)
10923 return FALSE;
10924 if (h->root.type == bfd_link_hash_new)
10925 {
10926 h->root.type = bfd_link_hash_defined;
10927 h->root.u.def.section = stub_entry->stub_sec;
10928 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10929 h->ref_regular = 1;
10930 h->def_regular = 1;
10931 h->ref_regular_nonweak = 1;
10932 h->forced_local = 1;
10933 h->non_elf = 0;
97b639ba
AM		 10934 }
10935 }
10936
b34976b6 10937 return TRUE;
721956f4
AM		 10938}
10939
10940/* As above, but don't actually build the stub. Just bump offset so
10941 we know stub section sizes, and select plt_branch stubs where
10942 long_branch stubs won't do. */
10943
b34976b6 10944static bfd_boolean
4ce794b7 10945ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10946{
10947 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10948 struct bfd_link_info *info;
721956f4
AM		 10949 struct ppc_link_hash_table *htab;
10950 bfd_vma off;
10951 int size;
10952
10953 /* Massage our args to the form they really have. */
10954 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 10955 info = in_arg;
10956
10957 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10958 if (htab == NULL)
10959 return FALSE;
721956f4 10960
794e51c0
AM		 10961 if (stub_entry->stub_type == ppc_stub_plt_call
10962 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10963 {
e054468f
AM		 10964 asection *plt;
10965 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10966 if (off >= (bfd_vma) -2)
411e1bfb 10967 abort ();
33e44f2e 10968 plt = htab->elf.splt;
25f23106
AM		 10969 if (!htab->elf.dynamic_sections_created
10970 || stub_entry->h == NULL
10971 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10972 plt = htab->elf.iplt;
e054468f
AM		 10973 off += (plt->output_offset
10974 + plt->output_section->vma
10975 - elf_gp (plt->output_section->owner)
ad8e1ba5 10976 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10977
794e51c0 10978 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 10979 if (htab->params->plt_stub_align)
794e51c0 10980 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 10981 if (info->emitrelocations)
10982 {
10983 stub_entry->stub_sec->reloc_count
b9e5796b
AM		 10984 += ((PPC_HA (off) != 0)
10985 + (htab->opd_abi
e7d1c40c 10986 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 10987 && PPC_HA (off + 16) == PPC_HA (off))
10988 : 1));
176a0d42
AM		 10989 stub_entry->stub_sec->flags |= SEC_RELOC;
10990 }
721956f4
AM		 10991 }
10992 else
10993 {
ad8e1ba5
AM		 10994 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10995 variants. */
ac2df442 10996 bfd_vma r2off = 0;
6911b7dc 10997 bfd_vma local_off = 0;
ac2df442 10998
721956f4
AM		 10999 off = (stub_entry->target_value
11000 + stub_entry->target_section->output_offset
11001 + stub_entry->target_section->output_section->vma);
eea6121a 11002 off -= (stub_entry->stub_sec->size
721956f4
AM		 11003 + stub_entry->stub_sec->output_offset
11004 + stub_entry->stub_sec->output_section->vma);
11005
ad8e1ba5
AM		 11006 /* Reset the stub type from the plt variant in case we now
11007 can reach with a shorter stub. */
11008 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11009 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11010
11011 size = 4;
11012 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11013 {
25f53a85 11014 r2off = get_r2off (info, stub_entry);
b9e5796b 11015 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 11016 {
11017 htab->stub_error = TRUE;
11018 return FALSE;
11019 }
ac2df442
AM		 11020 size = 12;
11021 if (PPC_HA (r2off) != 0)
11022 size = 16;
11023 off -= size - 4;
ad8e1ba5
AM		 11024 }
11025
6911b7dc
AM		 11026 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11027
b9e5796b
AM		 11028 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11029 Do the same for -R objects without function descriptors. */
11030 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11031 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11032 && r2off == 0))
721956f4
AM		 11033 {
11034 struct ppc_branch_hash_entry *br_entry;
11035
11036 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11037 stub_entry->root.string + 9,
b34976b6 11038 TRUE, FALSE);
721956f4
AM		 11039 if (br_entry == NULL)
11040 {
8de848d8 11041 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11042 stub_entry->root.string);
b34976b6
AM		 11043 htab->stub_error = TRUE;
11044 return FALSE;
721956f4
AM		 11045 }
11046
11047 if (br_entry->iter != htab->stub_iteration)
11048 {
11049 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11050 br_entry->offset = htab->brlt->size;
11051 htab->brlt->size += 8;
63bc6f6c 11052
ee75fd95 11053 if (htab->relbrlt != NULL)
eea6121a 11054 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11055 else if (info->emitrelocations)
11056 {
11057 htab->brlt->reloc_count += 1;
11058 htab->brlt->flags |= SEC_RELOC;
11059 }
721956f4 11060 }
ad8e1ba5
AM		 11061
11062 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11063 off = (br_entry->offset
11064 + htab->brlt->output_offset
11065 + htab->brlt->output_section->vma
11066 - elf_gp (htab->brlt->output_section->owner)
11067 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11068
176a0d42
AM		 11069 if (info->emitrelocations)
11070 {
11071 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11072 stub_entry->stub_sec->flags |= SEC_RELOC;
11073 }
11074
00f412ee 11075 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11076 {
11077 size = 12;
176a0d42 11078 if (PPC_HA (off) != 0)
ac2df442
AM		 11079 size = 16;
11080 }
11081 else
11082 {
00f412ee 11083 size = 16;
176a0d42 11084 if (PPC_HA (off) != 0)
ac2df442
AM		 11085 size += 4;
11086
11087 if (PPC_HA (r2off) != 0)
11088 size += 4;
00f412ee
AM		 11089 if (PPC_LO (r2off) != 0)
11090 size += 4;
ac2df442 11091 }
721956f4 11092 }
84f5d08e
AM		 11093 else if (info->emitrelocations)
11094 {
11095 stub_entry->stub_sec->reloc_count += 1;
11096 stub_entry->stub_sec->flags |= SEC_RELOC;
11097 }
721956f4
AM		 11098 }
11099
eea6121a 11100 stub_entry->stub_sec->size += size;
b34976b6 11101 return TRUE;
721956f4
AM		 11102}
11103
11104/* Set up various things so that we can make a list of input sections
11105 for each output section included in the link. Returns -1 on error,
cedb70c5 11106 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11107
11108int
e7d1c40c 11109ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4
AM		 11110{
11111 bfd *input_bfd;
734b6cf9 11112 int top_id, top_index, id;
721956f4 11113 asection *section;
734b6cf9 11114 asection **input_list;
721956f4
AM		 11115 bfd_size_type amt;
11116 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11117
4dfe6ac6
NC		 11118 if (htab == NULL)
11119 return -1;
4c52953f 11120
1e2f5b6e 11121 /* Find the top input section id. */
3d6f9012 11122 for (input_bfd = info->input_bfds, top_id = 3;
721956f4 11123 input_bfd != NULL;
c72f2fb2 11124 input_bfd = input_bfd->link.next)
721956f4 11125 {
721956f4
AM		 11126 for (section = input_bfd->sections;
11127 section != NULL;
11128 section = section->next)
11129 {
11130 if (top_id < section->id)
11131 top_id = section->id;
11132 }
11133 }
721956f4 11134
8f3bab57 11135 htab->top_id = top_id;
721956f4 11136 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 11137 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 11138 if (htab->stub_group == NULL)
11139 return -1;
11140
3d6f9012
AM		 11141 /* Set toc_off for com, und, abs and ind sections. */
11142 for (id = 0; id < 3; id++)
11143 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 11144
734b6cf9
AM		 11145 /* We can't use output_bfd->section_count here to find the top output
11146 section index as some sections may have been removed, and
8423293d 11147 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 11148 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM		 11149 section != NULL;
11150 section = section->next)
11151 {
11152 if (top_index < section->index)
11153 top_index = section->index;
11154 }
11155
11156 htab->top_index = top_index;
11157 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 11158 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 11159 htab->input_list = input_list;
11160 if (input_list == NULL)
11161 return -1;
11162
721956f4
AM		 11163 return 1;
11164}
11165
927be08e
AM		 11166/* Set up for first pass at multitoc partitioning. */
11167
11168void
11169ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11170{
11171 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11172
1c865ab2 11173 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11174 htab->toc_bfd = NULL;
11175 htab->toc_first_sec = NULL;
11176}
11177
e717da7e
AM		 11178/* The linker repeatedly calls this function for each TOC input section
11179 and linker generated GOT section. Group input bfds such that the toc
927be08e 11180 within a group is less than 64k in size. */
ad8e1ba5 11181
927be08e 11182bfd_boolean
4ce794b7 11183ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11184{
11185 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11186 bfd_vma addr, off, limit;
ad8e1ba5 11187
4dfe6ac6
NC		 11188 if (htab == NULL)
11189 return FALSE;
11190
927be08e 11191 if (!htab->second_toc_pass)
4c52953f 11192 {
927be08e 11193 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11194 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11195
11196 if (new_bfd)
bf102f86
AM		 11197 {
11198 htab->toc_bfd = isec->owner;
11199 htab->toc_first_sec = isec;
11200 }
927be08e 11201
bf102f86
AM		 11202 addr = isec->output_offset + isec->output_section->vma;
11203 off = addr - htab->toc_curr;
d77c8a4b
AM		 11204 limit = 0x80008000;
11205 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11206 limit = 0x10000;
11207 if (off + isec->size > limit)
bf102f86
AM		 11208 {
11209 addr = (htab->toc_first_sec->output_offset
11210 + htab->toc_first_sec->output_section->vma);
11211 htab->toc_curr = addr;
11212 }
99877b66 11213
927be08e
AM		 11214 /* toc_curr is the base address of this toc group. Set elf_gp
11215 for the input section to be the offset relative to the
11216 output toc base plus 0x8000. Making the input elf_gp an
11217 offset allows us to move the toc as a whole without
11218 recalculating input elf_gp. */
11219 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11220 off += TOC_BASE_OFF;
11221
11222 /* Die if someone uses a linker script that doesn't keep input
11223 file .toc and .got together. */
a4fd3de5
AM		 11224 if (new_bfd
11225 && elf_gp (isec->owner) != 0
927be08e
AM		 11226 && elf_gp (isec->owner) != off)
11227 return FALSE;
11228
11229 elf_gp (isec->owner) = off;
11230 return TRUE;
4c52953f 11231 }
927be08e
AM		 11232
11233 /* During the second pass toc_first_sec points to the start of
11234 a toc group, and toc_curr is used to track the old elf_gp.
11235 We use toc_bfd to ensure we only look at each bfd once. */
11236 if (htab->toc_bfd == isec->owner)
11237 return TRUE;
11238 htab->toc_bfd = isec->owner;
11239
11240 if (htab->toc_first_sec == NULL
11241 || htab->toc_curr != elf_gp (isec->owner))
11242 {
11243 htab->toc_curr = elf_gp (isec->owner);
11244 htab->toc_first_sec = isec;
11245 }
11246 addr = (htab->toc_first_sec->output_offset
11247 + htab->toc_first_sec->output_section->vma);
11248 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11249 elf_gp (isec->owner) = off;
11250
11251 return TRUE;
ad8e1ba5
AM		 11252}
11253
927be08e
AM		 11254/* Called via elf_link_hash_traverse to merge GOT entries for global
11255 symbol H. */
11256
11257static bfd_boolean
11258merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11259{
11260 if (h->root.type == bfd_link_hash_indirect)
11261 return TRUE;
11262
927be08e
AM		 11263 merge_got_entries (&h->got.glist);
11264
11265 return TRUE;
11266}
11267
11268/* Called via elf_link_hash_traverse to allocate GOT entries for global
11269 symbol H. */
11270
11271static bfd_boolean
11272reallocate_got (struct elf_link_hash_entry *h, void *inf)
11273{
11274 struct got_entry *gent;
11275
11276 if (h->root.type == bfd_link_hash_indirect)
11277 return TRUE;
11278
927be08e
AM		 11279 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11280 if (!gent->is_indirect)
11281 allocate_got (h, (struct bfd_link_info *) inf, gent);
11282 return TRUE;
11283}
11284
11285/* Called on the first multitoc pass after the last call to
11286 ppc64_elf_next_toc_section. This function removes duplicate GOT
11287 entries. */
11288
11289bfd_boolean
11290ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11291{
11292 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11293 struct bfd *ibfd, *ibfd2;
11294 bfd_boolean done_something;
11295
11296 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11297
7865406b
AM		 11298 if (!htab->do_multi_toc)
11299 return FALSE;
11300
d0fae19d 11301 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11302 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11303
11304 /* And tlsld_got. */
c72f2fb2 11305 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11306 {
11307 struct got_entry *ent, *ent2;
11308
11309 if (!is_ppc64_elf (ibfd))
11310 continue;
11311
11312 ent = ppc64_tlsld_got (ibfd);
11313 if (!ent->is_indirect
11314 && ent->got.offset != (bfd_vma) -1)
11315 {
c72f2fb2 11316 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11317 {
11318 if (!is_ppc64_elf (ibfd2))
11319 continue;
11320
11321 ent2 = ppc64_tlsld_got (ibfd2);
11322 if (!ent2->is_indirect
11323 && ent2->got.offset != (bfd_vma) -1
11324 && elf_gp (ibfd2) == elf_gp (ibfd))
11325 {
11326 ent2->is_indirect = TRUE;
11327 ent2->got.ent = ent;
11328 }
11329 }
11330 }
11331 }
11332
11333 /* Zap sizes of got sections. */
33e44f2e
AM		 11334 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11335 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11336 htab->got_reli_size = 0;
11337
c72f2fb2 11338 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11339 {
11340 asection *got, *relgot;
11341
11342 if (!is_ppc64_elf (ibfd))
11343 continue;
11344
11345 got = ppc64_elf_tdata (ibfd)->got;
11346 if (got != NULL)
11347 {
11348 got->rawsize = got->size;
11349 got->size = 0;
11350 relgot = ppc64_elf_tdata (ibfd)->relgot;
11351 relgot->rawsize = relgot->size;
11352 relgot->size = 0;
11353 }
11354 }
11355
11356 /* Now reallocate the got, local syms first. We don't need to
11357 allocate section contents again since we never increase size. */
c72f2fb2 11358 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11359 {
11360 struct got_entry **lgot_ents;
11361 struct got_entry **end_lgot_ents;
11362 struct plt_entry **local_plt;
11363 struct plt_entry **end_local_plt;
f961d9dd 11364 unsigned char *lgot_masks;
927be08e
AM		 11365 bfd_size_type locsymcount;
11366 Elf_Internal_Shdr *symtab_hdr;
19e08130 11367 asection *s;
927be08e
AM		 11368
11369 if (!is_ppc64_elf (ibfd))
11370 continue;
11371
11372 lgot_ents = elf_local_got_ents (ibfd);
11373 if (!lgot_ents)
11374 continue;
11375
11376 symtab_hdr = &elf_symtab_hdr (ibfd);
11377 locsymcount = symtab_hdr->sh_info;
11378 end_lgot_ents = lgot_ents + locsymcount;
11379 local_plt = (struct plt_entry **) end_lgot_ents;
11380 end_local_plt = local_plt + locsymcount;
f961d9dd 11381 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11382 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11383 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11384 {
11385 struct got_entry *ent;
11386
11387 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11388 {
19e08130
AM		 11389 unsigned int ent_size = 8;
11390 unsigned int rel_size = sizeof (Elf64_External_Rela);
11391
d0fae19d
AM		 11392 ent->got.offset = s->size;
11393 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11394 {
19e08130
AM		 11395 ent_size *= 2;
11396 rel_size *= 2;
11397 }
11398 s->size += ent_size;
11399 if ((*lgot_masks & PLT_IFUNC) != 0)
11400 {
33e44f2e 11401 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11402 htab->got_reli_size += rel_size;
11403 }
11404 else if (info->shared)
11405 {
11406 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11407 srel->size += rel_size;
d0fae19d
AM		 11408 }
11409 }
927be08e
AM		 11410 }
11411 }
11412
11413 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11414
c72f2fb2 11415 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11416 {
11417 struct got_entry *ent;
11418
11419 if (!is_ppc64_elf (ibfd))
11420 continue;
11421
11422 ent = ppc64_tlsld_got (ibfd);
11423 if (!ent->is_indirect
11424 && ent->got.offset != (bfd_vma) -1)
11425 {
11426 asection *s = ppc64_elf_tdata (ibfd)->got;
11427 ent->got.offset = s->size;
11428 s->size += 16;
11429 if (info->shared)
11430 {
11431 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11432 srel->size += sizeof (Elf64_External_Rela);
11433 }
11434 }
11435 }
11436
33e44f2e 11437 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11438 if (!done_something)
c72f2fb2 11439 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11440 {
11441 asection *got;
11442
11443 if (!is_ppc64_elf (ibfd))
11444 continue;
11445
11446 got = ppc64_elf_tdata (ibfd)->got;
11447 if (got != NULL)
11448 {
11449 done_something = got->rawsize != got->size;
11450 if (done_something)
11451 break;
11452 }
11453 }
11454
11455 if (done_something)
e7d1c40c 11456 (*htab->params->layout_sections_again) ();
927be08e
AM		 11457
11458 /* Set up for second pass over toc sections to recalculate elf_gp
11459 on input sections. */
11460 htab->toc_bfd = NULL;
11461 htab->toc_first_sec = NULL;
11462 htab->second_toc_pass = TRUE;
11463 return done_something;
11464}
11465
11466/* Called after second pass of multitoc partitioning. */
11467
11468void
11469ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11470{
11471 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11472
11473 /* After the second pass, toc_curr tracks the TOC offset used
11474 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11475 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11476}
11477
9b5ecbd0
AM		 11478/* No toc references were found in ISEC. If the code in ISEC makes no
11479 calls, then there's no need to use toc adjusting stubs when branching
11480 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11481 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11482 needed, and 2 if a cyclical call-graph was found but no other reason
11483 for a stub was detected. If called from the top level, a return of
11484 2 means the same as a return of 0. */
9b5ecbd0
AM		 11485
11486static int
4ce794b7 11487toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11488{
9b5ecbd0 11489 int ret;
70cc837d
AM		 11490
11491 /* Mark this section as checked. */
11492 isec->call_check_done = 1;
9b5ecbd0 11493
772119ce
AM		 11494 /* We know none of our code bearing sections will need toc stubs. */
11495 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11496 return 0;
11497
eea6121a 11498 if (isec->size == 0)
082c50f8
AM		 11499 return 0;
11500
4c52953f
AM		 11501 if (isec->output_section == NULL)
11502 return 0;
11503
4c52953f 11504 ret = 0;
70cc837d 11505 if (isec->reloc_count != 0)
9b5ecbd0 11506 {
70cc837d
AM		 11507 Elf_Internal_Rela *relstart, *rel;
11508 Elf_Internal_Sym *local_syms;
11509 struct ppc_link_hash_table *htab;
2917689a 11510
70cc837d
AM		 11511 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11512 info->keep_memory);
11513 if (relstart == NULL)
11514 return -1;
90aecf7a 11515
70cc837d
AM		 11516 /* Look for branches to outside of this section. */
11517 local_syms = NULL;
11518 htab = ppc_hash_table (info);
11519 if (htab == NULL)
11520 return -1;
4c52953f 11521
70cc837d 11522 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11523 {
70cc837d
AM		 11524 enum elf_ppc64_reloc_type r_type;
11525 unsigned long r_symndx;
11526 struct elf_link_hash_entry *h;
11527 struct ppc_link_hash_entry *eh;
11528 Elf_Internal_Sym *sym;
11529 asection *sym_sec;
11530 struct _opd_sec_data *opd;
11531 bfd_vma sym_value;
11532 bfd_vma dest;
11533
11534 r_type = ELF64_R_TYPE (rel->r_info);
11535 if (r_type != R_PPC64_REL24
11536 && r_type != R_PPC64_REL14
11537 && r_type != R_PPC64_REL14_BRTAKEN
11538 && r_type != R_PPC64_REL14_BRNTAKEN)
11539 continue;
4c52953f 11540
70cc837d
AM		 11541 r_symndx = ELF64_R_SYM (rel->r_info);
11542 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11543 isec->owner))
4c52953f 11544 {
70cc837d
AM		 11545 ret = -1;
11546 break;
11547 }
4c52953f 11548
70cc837d
AM		 11549 /* Calls to dynamic lib functions go through a plt call stub
11550 that uses r2. */
11551 eh = (struct ppc_link_hash_entry *) h;
11552 if (eh != NULL
11553 && (eh->elf.plt.plist != NULL
11554 || (eh->oh != NULL
11555 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11556 {
11557 ret = 1;
11558 break;
4c52953f
AM		 11559 }
11560
70cc837d
AM		 11561 if (sym_sec == NULL)
11562 /* Ignore other undefined symbols. */
4c52953f 11563 continue;
4c52953f 11564
70cc837d
AM		 11565 /* Assume branches to other sections not included in the
11566 link need stubs too, to cover -R and absolute syms. */
11567 if (sym_sec->output_section == NULL)
11568 {
11569 ret = 1;
11570 break;
11571 }
4c52953f 11572
70cc837d
AM		 11573 if (h == NULL)
11574 sym_value = sym->st_value;
11575 else
11576 {
11577 if (h->root.type != bfd_link_hash_defined
11578 && h->root.type != bfd_link_hash_defweak)
11579 abort ();
11580 sym_value = h->root.u.def.value;
11581 }
11582 sym_value += rel->r_addend;
4c52953f 11583
70cc837d
AM		 11584 /* If this branch reloc uses an opd sym, find the code section. */
11585 opd = get_opd_info (sym_sec);
11586 if (opd != NULL)
11587 {
11588 if (h == NULL && opd->adjust != NULL)
11589 {
11590 long adjust;
4c52953f 11591
70cc837d
AM		 11592 adjust = opd->adjust[sym->st_value / 8];
11593 if (adjust == -1)
11594 /* Assume deleted functions won't ever be called. */
11595 continue;
11596 sym_value += adjust;
11597 }
4c52953f 11598
aef36ac1
AM		 11599 dest = opd_entry_value (sym_sec, sym_value,
11600 &sym_sec, NULL, FALSE);
70cc837d
AM		 11601 if (dest == (bfd_vma) -1)
11602 continue;
11603 }
11604 else
11605 dest = (sym_value
11606 + sym_sec->output_offset
11607 + sym_sec->output_section->vma);
4c52953f 11608
70cc837d
AM		 11609 /* Ignore branch to self. */
11610 if (sym_sec == isec)
11611 continue;
4c52953f 11612
70cc837d
AM		 11613 /* If the called function uses the toc, we need a stub. */
11614 if (sym_sec->has_toc_reloc
11615 || sym_sec->makes_toc_func_call)
4c52953f 11616 {
70cc837d 11617 ret = 1;
4c52953f
AM		 11618 break;
11619 }
70cc837d
AM		 11620
11621 /* Assume any branch that needs a long branch stub might in fact
11622 need a plt_branch stub. A plt_branch stub uses r2. */
11623 else if (dest - (isec->output_offset
11624 + isec->output_section->vma
6911b7dc
AM		 11625 + rel->r_offset) + (1 << 25)
11626 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11627 ? h->other
11628 : sym->st_other))
4c52953f 11629 {
70cc837d
AM		 11630 ret = 1;
11631 break;
11632 }
11633
11634 /* If calling back to a section in the process of being
11635 tested, we can't say for sure that no toc adjusting stubs
11636 are needed, so don't return zero. */
11637 else if (sym_sec->call_check_in_progress)
11638 ret = 2;
11639
11640 /* Branches to another section that itself doesn't have any TOC
11641 references are OK. Recursively call ourselves to check. */
11642 else if (!sym_sec->call_check_done)
11643 {
11644 int recur;
11645
11646 /* Mark current section as indeterminate, so that other
11647 sections that call back to current won't be marked as
11648 known. */
11649 isec->call_check_in_progress = 1;
11650 recur = toc_adjusting_stub_needed (info, sym_sec);
11651 isec->call_check_in_progress = 0;
11652
4c52953f
AM		 11653 if (recur != 0)
11654 {
70cc837d
AM		 11655 ret = recur;
11656 if (recur != 2)
11657 break;
4c52953f
AM		 11658 }
11659 }
4c52953f 11660 }
70cc837d
AM		 11661
11662 if (local_syms != NULL
11663 && (elf_symtab_hdr (isec->owner).contents
11664 != (unsigned char *) local_syms))
11665 free (local_syms);
11666 if (elf_section_data (isec)->relocs != relstart)
11667 free (relstart);
9b5ecbd0
AM		 11668 }
11669
70cc837d
AM		 11670 if ((ret & 1) == 0
11671 && isec->map_head.s != NULL
11672 && (strcmp (isec->output_section->name, ".init") == 0
11673 || strcmp (isec->output_section->name, ".fini") == 0))
11674 {
11675 if (isec->map_head.s->has_toc_reloc
11676 || isec->map_head.s->makes_toc_func_call)
11677 ret = 1;
11678 else if (!isec->map_head.s->call_check_done)
11679 {
11680 int recur;
11681 isec->call_check_in_progress = 1;
11682 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11683 isec->call_check_in_progress = 0;
11684 if (recur != 0)
11685 ret = recur;
11686 }
11687 }
11688
11689 if (ret == 1)
11690 isec->makes_toc_func_call = 1;
4c52953f 11691
9b5ecbd0
AM		 11692 return ret;
11693}
11694
721956f4
AM		 11695/* The linker repeatedly calls this function for each input section,
11696 in the order that input sections are linked into output sections.
11697 Build lists of input sections to determine groupings between which
11698 we may insert linker stubs. */
11699
9b5ecbd0 11700bfd_boolean
4ce794b7 11701ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11702{
11703 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11704
4dfe6ac6
NC		 11705 if (htab == NULL)
11706 return FALSE;
11707
734b6cf9
AM		 11708 if ((isec->output_section->flags & SEC_CODE) != 0
11709 && isec->output_section->index <= htab->top_index)
721956f4 11710 {
734b6cf9 11711 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11712 /* Steal the link_sec pointer for our list. */
721956f4 11713#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 11714 /* This happens to make the list in reverse order,
11715 which is what we want. */
734b6cf9
AM		 11716 PREV_SEC (isec) = *list;
11717 *list = isec;
721956f4 11718 }
ad8e1ba5 11719
4c52953f 11720 if (htab->multi_toc_needed)
9b5ecbd0 11721 {
8b974ba3
AM		 11722 /* Analyse sections that aren't already flagged as needing a
11723 valid toc pointer. Exclude .fixup for the linux kernel.
11724 .fixup contains branches, but only back to the function that
11725 hit an exception. */
11726 if (!(isec->has_toc_reloc
11727 || (isec->flags & SEC_CODE) == 0
11728 || strcmp (isec->name, ".fixup") == 0
11729 || isec->call_check_done))
11730 {
11731 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11732 return FALSE;
8b974ba3
AM		 11733 }
11734 /* Make all sections use the TOC assigned for this object file.
11735 This will be wrong for pasted sections; We fix that in
11736 check_pasted_section(). */
11737 if (elf_gp (isec->owner) != 0)
11738 htab->toc_curr = elf_gp (isec->owner);
11739 }
11740
ad8e1ba5 11741 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11742 return TRUE;
721956f4
AM		 11743}
11744
70cc837d
AM		 11745/* Check that all .init and .fini sections use the same toc, if they
11746 have toc relocs. */
11747
11748static bfd_boolean
11749check_pasted_section (struct bfd_link_info *info, const char *name)
11750{
11751 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11752
11753 if (o != NULL)
11754 {
11755 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11756 bfd_vma toc_off = 0;
11757 asection *i;
11758
11759 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11760 if (i->has_toc_reloc)
11761 {
11762 if (toc_off == 0)
11763 toc_off = htab->stub_group[i->id].toc_off;
11764 else if (toc_off != htab->stub_group[i->id].toc_off)
11765 return FALSE;
11766 }
6683a28d
AM		 11767
11768 if (toc_off == 0)
11769 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11770 if (i->makes_toc_func_call)
11771 {
11772 toc_off = htab->stub_group[i->id].toc_off;
11773 break;
11774 }
11775
70cc837d
AM		 11776 /* Make sure the whole pasted function uses the same toc offset. */
11777 if (toc_off != 0)
11778 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11779 htab->stub_group[i->id].toc_off = toc_off;
11780 }
11781 return TRUE;
11782}
11783
11784bfd_boolean
11785ppc64_elf_check_init_fini (struct bfd_link_info *info)
11786{
11787 return (check_pasted_section (info, ".init")
11788 & check_pasted_section (info, ".fini"));
11789}
11790
721956f4
AM		 11791/* See whether we can group stub sections together. Grouping stub
11792 sections may result in fewer stubs. More importantly, we need to
11793 put all .init* and .fini* stubs at the beginning of the .init or
11794 .fini output sections respectively, because glibc splits the
11795 _init and _fini functions into multiple parts. Putting a stub in
11796 the middle of a function is not a good idea. */
11797
11798static void
4ce794b7
AM		 11799group_sections (struct ppc_link_hash_table *htab,
11800 bfd_size_type stub_group_size,
11801 bfd_boolean stubs_always_before_branch)
721956f4 11802{
7c8fe5c4
AM		 11803 asection **list;
11804 bfd_size_type stub14_group_size;
11805 bfd_boolean suppress_size_errors;
11806
11807 suppress_size_errors = FALSE;
0cfb0717 11808 stub14_group_size = stub_group_size >> 10;
7c8fe5c4
AM		 11809 if (stub_group_size == 1)
11810 {
11811 /* Default values. */
11812 if (stubs_always_before_branch)
11813 {
11814 stub_group_size = 0x1e00000;
11815 stub14_group_size = 0x7800;
11816 }
11817 else
11818 {
11819 stub_group_size = 0x1c00000;
11820 stub14_group_size = 0x7000;
11821 }
11822 suppress_size_errors = TRUE;
11823 }
11824
11825 list = htab->input_list + htab->top_index;
734b6cf9 11826 do
721956f4 11827 {
734b6cf9
AM		 11828 asection *tail = *list;
11829 while (tail != NULL)
721956f4 11830 {
734b6cf9
AM		 11831 asection *curr;
11832 asection *prev;
11833 bfd_size_type total;
11834 bfd_boolean big_sec;
11835 bfd_vma curr_toc;
11836
11837 curr = tail;
eea6121a 11838 total = tail->size;
6bee8834
AM		 11839 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11840 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11841 ? stub14_group_size : stub_group_size);
11842 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11843 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11844 tail->owner, tail);
734b6cf9
AM		 11845 curr_toc = htab->stub_group[tail->id].toc_off;
11846
11847 while ((prev = PREV_SEC (curr)) != NULL
11848 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11849 < (ppc64_elf_section_data (prev) != NULL
11850 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11851 ? stub14_group_size : stub_group_size))
ad8e1ba5 11852 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11853 curr = prev;
11854
11855 /* OK, the size from the start of CURR to the end is less
11856 than stub_group_size and thus can be handled by one stub
11857 section. (or the tail section is itself larger than
11858 stub_group_size, in which case we may be toast.) We
11859 should really be keeping track of the total size of stubs
11860 added here, as stubs contribute to the final output
11861 section size. That's a little tricky, and this way will
11862 only break if stubs added make the total size more than
11863 2^25, ie. for the default stub_group_size, if stubs total
11864 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11865 do
721956f4
AM		 11866 {
11867 prev = PREV_SEC (tail);
734b6cf9 11868 /* Set up this stub group. */
721956f4
AM		 11869 htab->stub_group[tail->id].link_sec = curr;
11870 }
734b6cf9
AM		 11871 while (tail != curr && (tail = prev) != NULL);
11872
11873 /* But wait, there's more! Input sections up to stub_group_size
11874 bytes before the stub section can be handled by it too.
11875 Don't do this if we have a really large section after the
11876 stubs, as adding more stubs increases the chance that
11877 branches may not reach into the stub section. */
11878 if (!stubs_always_before_branch && !big_sec)
11879 {
11880 total = 0;
11881 while (prev != NULL
11882 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11883 < (ppc64_elf_section_data (prev) != NULL
11884 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11885 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 11886 && htab->stub_group[prev->id].toc_off == curr_toc)
11887 {
11888 tail = prev;
11889 prev = PREV_SEC (tail);
11890 htab->stub_group[tail->id].link_sec = curr;
11891 }
11892 }
11893 tail = prev;
721956f4
AM		 11894 }
11895 }
734b6cf9
AM		 11896 while (list-- != htab->input_list);
11897 free (htab->input_list);
721956f4
AM		 11898#undef PREV_SEC
11899}
11900
58d180e8
AM		 11901static const unsigned char glink_eh_frame_cie[] =
11902{
11903 0, 0, 0, 16, /* length. */
11904 0, 0, 0, 0, /* id. */
11905 1, /* CIE version. */
11906 'z', 'R', 0, /* Augmentation string. */
11907 4, /* Code alignment. */
11908 0x78, /* Data alignment. */
11909 65, /* RA reg. */
11910 1, /* Augmentation size. */
11911 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
da44f4e5
AM		 11912 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11913 0, 0, 0, 0
58d180e8
AM		 11914};
11915
d969d15f
AM		 11916/* Stripping output sections is normally done before dynamic section
11917 symbols have been allocated. This function is called later, and
11918 handles cases like htab->brlt which is mapped to its own output
11919 section. */
11920
11921static void
11922maybe_strip_output (struct bfd_link_info *info, asection *isec)
11923{
11924 if (isec->size == 0
11925 && isec->output_section->size == 0
53d8967a 11926 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11927 && !bfd_section_removed_from_list (info->output_bfd,
11928 isec->output_section)
11929 && elf_section_data (isec->output_section)->dynindx == 0)
11930 {
11931 isec->output_section->flags |= SEC_EXCLUDE;
11932 bfd_section_list_remove (info->output_bfd, isec->output_section);
11933 info->output_bfd->section_count--;
11934 }
11935}
11936
721956f4
AM		 11937/* Determine and set the size of the stub section for a final link.
11938
11939 The basic idea here is to examine all the relocations looking for
11940 PC-relative calls to a target that is unreachable with a "bl"
11941 instruction. */
11942
b34976b6 11943bfd_boolean
e7d1c40c 11944ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11945{
11946 bfd_size_type stub_group_size;
b34976b6 11947 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11948 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11949
4dfe6ac6
NC		 11950 if (htab == NULL)
11951 return FALSE;
11952
e7d1c40c
AM		 11953 if (htab->params->plt_thread_safe == -1 && !info->executable)
11954 htab->params->plt_thread_safe = 1;
b9e5796b 11955 if (!htab->opd_abi)
e7d1c40c
AM		 11956 htab->params->plt_thread_safe = 0;
11957 else if (htab->params->plt_thread_safe == -1)
794e51c0 11958 {
e2458743 11959 static const char *const thread_starter[] =
794e51c0
AM		 11960 {
11961 "pthread_create",
11962 /* libstdc++ */
11963 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11964 /* librt */
11965 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11966 "mq_notify", "create_timer",
11967 /* libanl */
11968 "getaddrinfo_a",
11969 /* libgomp */
2300b5a1 11970 "GOMP_parallel",
794e51c0 11971 "GOMP_parallel_start",
2300b5a1 11972 "GOMP_parallel_loop_static",
794e51c0 11973 "GOMP_parallel_loop_static_start",
2300b5a1 11974 "GOMP_parallel_loop_dynamic",
794e51c0 11975 "GOMP_parallel_loop_dynamic_start",
2300b5a1 11976 "GOMP_parallel_loop_guided",
794e51c0 11977 "GOMP_parallel_loop_guided_start",
2300b5a1 11978 "GOMP_parallel_loop_runtime",
794e51c0 11979 "GOMP_parallel_loop_runtime_start",
2300b5a1 11980 "GOMP_parallel_sections",
68ffbac6 11981 "GOMP_parallel_sections_start",
f9dffbf0
AM		 11982 /* libgo */
11983 "__go_go",
794e51c0
AM		 11984 };
11985 unsigned i;
11986
11987 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11988 {
11989 struct elf_link_hash_entry *h;
11990 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11991 FALSE, FALSE, TRUE);
e7d1c40c
AM		 11992 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11993 if (htab->params->plt_thread_safe)
794e51c0
AM		 11994 break;
11995 }
11996 }
e7d1c40c
AM		 11997 stubs_always_before_branch = htab->params->group_size < 0;
11998 if (htab->params->group_size < 0)
11999 stub_group_size = -htab->params->group_size;
721956f4 12000 else
e7d1c40c 12001 stub_group_size = htab->params->group_size;
721956f4
AM		 12002
12003 group_sections (htab, stub_group_size, stubs_always_before_branch);
12004
721956f4
AM		 12005 while (1)
12006 {
12007 bfd *input_bfd;
12008 unsigned int bfd_indx;
12009 asection *stub_sec;
721956f4
AM		 12010
12011 htab->stub_iteration += 1;
721956f4
AM		 12012
12013 for (input_bfd = info->input_bfds, bfd_indx = 0;
12014 input_bfd != NULL;
c72f2fb2 12015 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 12016 {
12017 Elf_Internal_Shdr *symtab_hdr;
12018 asection *section;
6cdc0ccc 12019 Elf_Internal_Sym *local_syms = NULL;
721956f4 12020
0c8d6e5c 12021 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 12022 continue;
12023
721956f4 12024 /* We'll need the symbol table in a second. */
0ffa91dd 12025 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 12026 if (symtab_hdr->sh_info == 0)
12027 continue;
12028
721956f4
AM		 12029 /* Walk over each section attached to the input bfd. */
12030 for (section = input_bfd->sections;
12031 section != NULL;
12032 section = section->next)
12033 {
721956f4 12034 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12035
12036 /* If there aren't any relocs, then there's nothing more
12037 to do. */
12038 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12039 || (section->flags & SEC_ALLOC) == 0
12040 || (section->flags & SEC_LOAD) == 0
12041 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12042 || section->reloc_count == 0)
12043 continue;
12044
12045 /* If this section is a link-once section that will be
12046 discarded, then don't create any stubs. */
12047 if (section->output_section == NULL
927be08e 12048 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12049 continue;
12050
1e2f5b6e
AM		 12051 /* Get the relocs. */
12052 internal_relocs
4ce794b7 12053 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12054 info->keep_memory);
721956f4 12055 if (internal_relocs == NULL)
1e2f5b6e 12056 goto error_ret_free_local;
721956f4
AM		 12057
12058 /* Now examine each relocation. */
12059 irela = internal_relocs;
12060 irelaend = irela + section->reloc_count;
12061 for (; irela < irelaend; irela++)
12062 {
4ce794b7
AM		 12063 enum elf_ppc64_reloc_type r_type;
12064 unsigned int r_indx;
721956f4
AM		 12065 enum ppc_stub_type stub_type;
12066 struct ppc_stub_hash_entry *stub_entry;
8387904d 12067 asection *sym_sec, *code_sec;
e054468f 12068 bfd_vma sym_value, code_value;
721956f4 12069 bfd_vma destination;
6911b7dc 12070 unsigned long local_off;
8843416a 12071 bfd_boolean ok_dest;
721956f4 12072 struct ppc_link_hash_entry *hash;
8387904d 12073 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12074 struct elf_link_hash_entry *h;
12075 Elf_Internal_Sym *sym;
721956f4
AM		 12076 char *stub_name;
12077 const asection *id_sec;
74f0fb50 12078 struct _opd_sec_data *opd;
e054468f 12079 struct plt_entry *plt_ent;
721956f4
AM		 12080
12081 r_type = ELF64_R_TYPE (irela->r_info);
12082 r_indx = ELF64_R_SYM (irela->r_info);
12083
4ce794b7 12084 if (r_type >= R_PPC64_max)
721956f4
AM		 12085 {
12086 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12087 goto error_ret_free_internal;
721956f4
AM		 12088 }
12089
12090 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12091 if (r_type != R_PPC64_REL24
12092 && r_type != R_PPC64_REL14
12093 && r_type != R_PPC64_REL14_BRTAKEN
12094 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12095 continue;
12096
12097 /* Now determine the call target, its name, value,
12098 section. */
411e1bfb
AM		 12099 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12100 r_indx, input_bfd))
12101 goto error_ret_free_internal;
12102 hash = (struct ppc_link_hash_entry *) h;
12103
8843416a 12104 ok_dest = FALSE;
8387904d 12105 fdh = NULL;
7fe2b9a6 12106 sym_value = 0;
411e1bfb 12107 if (hash == NULL)
721956f4 12108 {
411e1bfb 12109 sym_value = sym->st_value;
8843416a 12110 ok_dest = TRUE;
721956f4 12111 }
7fe2b9a6
AM		 12112 else if (hash->elf.root.type == bfd_link_hash_defined
12113 || hash->elf.root.type == bfd_link_hash_defweak)
12114 {
12115 sym_value = hash->elf.root.u.def.value;
12116 if (sym_sec->output_section != NULL)
12117 ok_dest = TRUE;
12118 }
12119 else if (hash->elf.root.type == bfd_link_hash_undefweak
12120 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12121 {
99877b66 12122 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12123 use the func descriptor sym instead if it is
12124 defined. */
ceb1f1ef 12125 if (hash->elf.root.root.string[0] == '.'
b31867b6 12126 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12127 {
8387904d
AM		 12128 if (fdh->elf.root.type == bfd_link_hash_defined
12129 || fdh->elf.root.type == bfd_link_hash_defweak)
12130 {
12131 sym_sec = fdh->elf.root.u.def.section;
12132 sym_value = fdh->elf.root.u.def.value;
12133 if (sym_sec->output_section != NULL)
12134 ok_dest = TRUE;
12135 }
99877b66
AM		 12136 else
12137 fdh = NULL;
8387904d 12138 }
7fe2b9a6
AM		 12139 }
12140 else
12141 {
12142 bfd_set_error (bfd_error_bad_value);
12143 goto error_ret_free_internal;
721956f4
AM		 12144 }
12145
8843416a 12146 destination = 0;
6911b7dc 12147 local_off = 0;
8843416a
AM		 12148 if (ok_dest)
12149 {
12150 sym_value += irela->r_addend;
12151 destination = (sym_value
12152 + sym_sec->output_offset
12153 + sym_sec->output_section->vma);
6911b7dc
AM		 12154 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12155 ? hash->elf.other
12156 : sym->st_other);
8843416a
AM		 12157 }
12158
8387904d 12159 code_sec = sym_sec;
e054468f 12160 code_value = sym_value;
74f0fb50
AM		 12161 opd = get_opd_info (sym_sec);
12162 if (opd != NULL)
8387904d
AM		 12163 {
12164 bfd_vma dest;
12165
74f0fb50 12166 if (hash == NULL && opd->adjust != NULL)
8387904d 12167 {
74f0fb50 12168 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 12169 if (adjust == -1)
12170 continue;
e054468f 12171 code_value += adjust;
8387904d
AM		 12172 sym_value += adjust;
12173 }
12174 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12175 &code_sec, &code_value, FALSE);
8387904d
AM		 12176 if (dest != (bfd_vma) -1)
12177 {
12178 destination = dest;
12179 if (fdh != NULL)
12180 {
12181 /* Fixup old ABI sym to point at code
12182 entry. */
99877b66 12183 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12184 hash->elf.root.u.def.section = code_sec;
e054468f 12185 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12186 }
12187 }
12188 }
12189
721956f4 12190 /* Determine what (if any) linker stub is needed. */
e054468f 12191 plt_ent = NULL;
721956f4 12192 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12193 &plt_ent, destination,
12194 local_off);
ad8e1ba5
AM		 12195
12196 if (stub_type != ppc_stub_plt_call)
12197 {
12198 /* Check whether we need a TOC adjusting stub.
12199 Since the linker pastes together pieces from
12200 different object files when creating the
12201 _init and _fini functions, it may be that a
12202 call to what looks like a local sym is in
12203 fact a call needing a TOC adjustment. */
8387904d
AM		 12204 if (code_sec != NULL
12205 && code_sec->output_section != NULL
12206 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 12207 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 12208 && (code_sec->has_toc_reloc
12209 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12210 stub_type = ppc_stub_long_branch_r2off;
12211 }
12212
721956f4
AM		 12213 if (stub_type == ppc_stub_none)
12214 continue;
12215
411e1bfb
AM		 12216 /* __tls_get_addr calls might be eliminated. */
12217 if (stub_type != ppc_stub_plt_call
12218 && hash != NULL
8387904d
AM		 12219 && (hash == htab->tls_get_addr
12220 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12221 && section->has_tls_reloc
12222 && irela != internal_relocs)
12223 {
12224 /* Get tls info. */
f961d9dd 12225 unsigned char *tls_mask;
411e1bfb 12226
3a71aa26 12227 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12228 irela - 1, input_bfd))
12229 goto error_ret_free_internal;
e7b938ca 12230 if (*tls_mask != 0)
411e1bfb
AM		 12231 continue;
12232 }
12233
3b421ab3
AM		 12234 if (stub_type == ppc_stub_plt_call
12235 && irela + 1 < irelaend
12236 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12237 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12238 {
12239 if (!tocsave_find (htab, INSERT,
12240 &local_syms, irela + 1, input_bfd))
12241 goto error_ret_free_internal;
12242 }
12243 else if (stub_type == ppc_stub_plt_call)
12244 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12245
721956f4
AM		 12246 /* Support for grouping stub sections. */
12247 id_sec = htab->stub_group[section->id].link_sec;
12248
12249 /* Get the name of this stub. */
12250 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12251 if (!stub_name)
12252 goto error_ret_free_internal;
12253
12254 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12255 stub_name, FALSE, FALSE);
721956f4
AM		 12256 if (stub_entry != NULL)
12257 {
12258 /* The proper stub has already been created. */
12259 free (stub_name);
794e51c0
AM		 12260 if (stub_type == ppc_stub_plt_call_r2save)
12261 stub_entry->stub_type = stub_type;
721956f4
AM		 12262 continue;
12263 }
12264
25f53a85 12265 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12266 if (stub_entry == NULL)
12267 {
12268 free (stub_name);
6cdc0ccc
AM		 12269 error_ret_free_internal:
12270 if (elf_section_data (section)->relocs == NULL)
12271 free (internal_relocs);
12272 error_ret_free_local:
12273 if (local_syms != NULL
12274 && (symtab_hdr->contents
12275 != (unsigned char *) local_syms))
12276 free (local_syms);
b34976b6 12277 return FALSE;
721956f4
AM		 12278 }
12279
ad8e1ba5 12280 stub_entry->stub_type = stub_type;
794e51c0
AM		 12281 if (stub_type != ppc_stub_plt_call
12282 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12283 {
12284 stub_entry->target_value = code_value;
12285 stub_entry->target_section = code_sec;
12286 }
12287 else
12288 {
12289 stub_entry->target_value = sym_value;
12290 stub_entry->target_section = sym_sec;
12291 }
721956f4 12292 stub_entry->h = hash;
e054468f 12293 stub_entry->plt_ent = plt_ent;
6911b7dc 12294 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12295
12296 if (stub_entry->h != NULL)
12297 htab->stub_globals += 1;
721956f4
AM		 12298 }
12299
12300 /* We're done with the internal relocs, free them. */
6cdc0ccc 12301 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12302 free (internal_relocs);
721956f4 12303 }
6cdc0ccc
AM		 12304
12305 if (local_syms != NULL
12306 && symtab_hdr->contents != (unsigned char *) local_syms)
12307 {
12308 if (!info->keep_memory)
12309 free (local_syms);
12310 else
12311 symtab_hdr->contents = (unsigned char *) local_syms;
12312 }
721956f4
AM		 12313 }
12314
5c3dead3 12315 /* We may have added some stubs. Find out the new size of the
721956f4 12316 stub sections. */
e7d1c40c 12317 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12318 stub_sec != NULL;
12319 stub_sec = stub_sec->next)
e717da7e 12320 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12321 {
5c3dead3 12322 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12323 stub_sec->size = 0;
12324 stub_sec->reloc_count = 0;
84f5d08e 12325 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12326 }
eea6121a
AM		 12327
12328 htab->brlt->size = 0;
84f5d08e
AM		 12329 htab->brlt->reloc_count = 0;
12330 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12331 if (htab->relbrlt != NULL)
eea6121a 12332 htab->relbrlt->size = 0;
721956f4 12333
63bc6f6c 12334 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12335
176a0d42
AM		 12336 if (info->emitrelocations
12337 && htab->glink != NULL && htab->glink->size != 0)
12338 {
12339 htab->glink->reloc_count = 1;
12340 htab->glink->flags |= SEC_RELOC;
12341 }
12342
58d180e8
AM		 12343 if (htab->glink_eh_frame != NULL
12344 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12345 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12346 {
4bbe044a 12347 size_t size = 0, align;
58d180e8 12348
e7d1c40c 12349 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12350 stub_sec != NULL;
12351 stub_sec = stub_sec->next)
12352 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
da44f4e5 12353 size += 24;
58d180e8
AM		 12354 if (htab->glink != NULL && htab->glink->size != 0)
12355 size += 24;
12356 if (size != 0)
12357 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12358 align = 1;
12359 align <<= htab->glink_eh_frame->output_section->alignment_power;
12360 align -= 1;
12361 size = (size + align) & ~align;
58d180e8
AM		 12362 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12363 htab->glink_eh_frame->size = size;
12364 }
12365
e7d1c40c
AM		 12366 if (htab->params->plt_stub_align != 0)
12367 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12368 stub_sec != NULL;
12369 stub_sec = stub_sec->next)
12370 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12371 stub_sec->size = ((stub_sec->size
12372 + (1 << htab->params->plt_stub_align) - 1)
12373 & (-1 << htab->params->plt_stub_align));
794e51c0 12374
e7d1c40c 12375 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12376 stub_sec != NULL;
12377 stub_sec = stub_sec->next)
12378 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12379 && stub_sec->rawsize != stub_sec->size)
12380 break;
12381
12382 /* Exit from this loop when no stubs have been added, and no stubs
12383 have changed size. */
58d180e8
AM		 12384 if (stub_sec == NULL
12385 && (htab->glink_eh_frame == NULL
12386 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12387 break;
12388
721956f4 12389 /* Ask the linker to do its stuff. */
e7d1c40c 12390 (*htab->params->layout_sections_again) ();
721956f4
AM		 12391 }
12392
da44f4e5
AM		 12393 if (htab->glink_eh_frame != NULL
12394 && htab->glink_eh_frame->size != 0)
12395 {
12396 bfd_vma val;
12397 bfd_byte *p, *last_fde;
12398 size_t last_fde_len, size, align, pad;
12399 asection *stub_sec;
12400
12401 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12402 if (p == NULL)
12403 return FALSE;
12404 htab->glink_eh_frame->contents = p;
12405 last_fde = p;
12406
12407 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12408 /* CIE length (rewrite in case little-endian). */
12409 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12410 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12411 p += sizeof (glink_eh_frame_cie);
12412
12413 for (stub_sec = htab->params->stub_bfd->sections;
12414 stub_sec != NULL;
12415 stub_sec = stub_sec->next)
12416 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12417 {
12418 last_fde = p;
12419 last_fde_len = 20;
12420 /* FDE length. */
12421 bfd_put_32 (htab->elf.dynobj, 20, p);
12422 p += 4;
12423 /* CIE pointer. */
12424 val = p - htab->glink_eh_frame->contents;
12425 bfd_put_32 (htab->elf.dynobj, val, p);
12426 p += 4;
12427 /* Offset to stub section, written later. */
12428 p += 4;
12429 /* stub section size. */
12430 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12431 p += 4;
12432 /* Augmentation. */
12433 p += 1;
12434 /* Pad. */
12435 p += 7;
12436 }
12437 if (htab->glink != NULL && htab->glink->size != 0)
12438 {
12439 last_fde = p;
12440 last_fde_len = 20;
12441 /* FDE length. */
12442 bfd_put_32 (htab->elf.dynobj, 20, p);
12443 p += 4;
12444 /* CIE pointer. */
12445 val = p - htab->glink_eh_frame->contents;
12446 bfd_put_32 (htab->elf.dynobj, val, p);
12447 p += 4;
12448 /* Offset to .glink, written later. */
12449 p += 4;
12450 /* .glink size. */
12451 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12452 p += 4;
12453 /* Augmentation. */
12454 p += 1;
12455
12456 *p++ = DW_CFA_advance_loc + 1;
12457 *p++ = DW_CFA_register;
12458 *p++ = 65;
12459 *p++ = 12;
12460 *p++ = DW_CFA_advance_loc + 4;
12461 *p++ = DW_CFA_restore_extended;
12462 *p++ = 65;
12463 }
12464 /* Subsume any padding into the last FDE if user .eh_frame
12465 sections are aligned more than glink_eh_frame. Otherwise any
12466 zero padding will be seen as a terminator. */
12467 size = p - htab->glink_eh_frame->contents;
12468 align = 1;
12469 align <<= htab->glink_eh_frame->output_section->alignment_power;
12470 align -= 1;
12471 pad = ((size + align) & ~align) - size;
12472 htab->glink_eh_frame->size = size + pad;
12473 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12474 }
12475
d969d15f
AM		 12476 maybe_strip_output (info, htab->brlt);
12477 if (htab->glink_eh_frame != NULL)
12478 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12479
b34976b6 12480 return TRUE;
721956f4
AM		 12481}
12482
12483/* Called after we have determined section placement. If sections
805fc799 12484 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12485
805fc799 12486bfd_vma
1c865ab2 12487ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12488{
805fc799
AM		 12489 asection *s;
12490 bfd_vma TOCstart;
721956f4 12491
805fc799
AM		 12492 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12493 order. The TOC starts where the first of these sections starts. */
12494 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12495 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12496 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12497 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12498 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12499 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12500 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12501 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12502 {
12503 /* This may happen for
12504 o references to TOC base (SYM@toc / TOC[tc0]) without a
12505 .toc directive
12506 o bad linker script
12507 o --gc-sections and empty TOC sections
12508
12509 FIXME: Warn user? */
12510
12511 /* Look for a likely section. We probably won't even be
12512 using TOCstart. */
12513 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12514 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12515 | SEC_EXCLUDE))
805fc799
AM		 12516 == (SEC_ALLOC | SEC_SMALL_DATA))
12517 break;
721956f4 12518 if (s == NULL)
805fc799 12519 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12520 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12521 == (SEC_ALLOC | SEC_SMALL_DATA))
12522 break;
721956f4 12523 if (s == NULL)
805fc799 12524 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12525 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12526 == SEC_ALLOC)
805fc799 12527 break;
721956f4 12528 if (s == NULL)
805fc799 12529 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12530 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12531 break;
12532 }
721956f4 12533
805fc799
AM		 12534 TOCstart = 0;
12535 if (s != NULL)
12536 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12537
1c865ab2
AM		 12538 _bfd_set_gp_value (obfd, TOCstart);
12539
810d4e75 12540 if (info != NULL && s != NULL)
1c865ab2
AM		 12541 {
12542 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12543
810d4e75
AM		 12544 if (htab != NULL)
12545 {
12546 if (htab->elf.hgot != NULL)
12547 {
12548 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12549 htab->elf.hgot->root.u.def.section = s;
12550 }
12551 }
12552 else
1c865ab2 12553 {
810d4e75
AM		 12554 struct bfd_link_hash_entry *bh = NULL;
12555 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12556 s, TOC_BASE_OFF, NULL, FALSE,
12557 FALSE, &bh);
1c865ab2
AM		 12558 }
12559 }
805fc799 12560 return TOCstart;
721956f4
AM		 12561}
12562
a345bc8d
AM		 12563/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12564 write out any global entry stubs. */
12565
12566static bfd_boolean
12567build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12568{
12569 struct bfd_link_info *info;
12570 struct ppc_link_hash_table *htab;
12571 struct plt_entry *pent;
12572 asection *s;
12573
12574 if (h->root.type == bfd_link_hash_indirect)
12575 return TRUE;
12576
12577 if (!h->pointer_equality_needed)
12578 return TRUE;
12579
12580 if (h->def_regular)
12581 return TRUE;
12582
12583 info = inf;
12584 htab = ppc_hash_table (info);
12585 if (htab == NULL)
12586 return FALSE;
12587
12588 s = htab->glink;
12589 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12590 if (pent->plt.offset != (bfd_vma) -1
12591 && pent->addend == 0)
12592 {
12593 bfd_byte *p;
12594 asection *plt;
12595 bfd_vma off;
12596
a345bc8d 12597 p = s->contents + h->root.u.def.value;
33e44f2e 12598 plt = htab->elf.splt;
a345bc8d
AM		 12599 if (!htab->elf.dynamic_sections_created
12600 || h->dynindx == -1)
33e44f2e 12601 plt = htab->elf.iplt;
a345bc8d
AM		 12602 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12603 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12604
12605 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12606 {
12607 info->callbacks->einfo
12608 (_("%P: linkage table error against `%T'\n"),
12609 h->root.root.string);
12610 bfd_set_error (bfd_error_bad_value);
12611 htab->stub_error = TRUE;
12612 }
12613
7341d5e2
AM		 12614 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12615 if (htab->params->emit_stub_syms)
12616 {
12617 size_t len = strlen (h->root.root.string);
12618 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12619
12620 if (name == NULL)
12621 return FALSE;
12622
12623 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12624 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12625 if (h == NULL)
12626 return FALSE;
12627 if (h->root.type == bfd_link_hash_new)
12628 {
12629 h->root.type = bfd_link_hash_defined;
12630 h->root.u.def.section = s;
12631 h->root.u.def.value = p - s->contents;
12632 h->ref_regular = 1;
12633 h->def_regular = 1;
12634 h->ref_regular_nonweak = 1;
12635 h->forced_local = 1;
12636 h->non_elf = 0;
12637 }
12638 }
12639
a345bc8d
AM		 12640 if (PPC_HA (off) != 0)
12641 {
12642 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12643 p += 4;
12644 }
12645 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12646 p += 4;
12647 bfd_put_32 (s->owner, MTCTR_R12, p);
12648 p += 4;
12649 bfd_put_32 (s->owner, BCTR, p);
12650 break;
12651 }
12652 return TRUE;
12653}
12654
721956f4
AM		 12655/* Build all the stubs associated with the current output file.
12656 The stubs are kept in a hash table attached to the main linker
12657 hash table. This function is called via gldelf64ppc_finish. */
12658
b34976b6 12659bfd_boolean
e7d1c40c 12660ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12661 char **stats)
5d1634d7
AM		 12662{
12663 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12664 asection *stub_sec;
5d1634d7 12665 bfd_byte *p;
e717da7e 12666 int stub_sec_count = 0;
5d1634d7 12667
4dfe6ac6
NC		 12668 if (htab == NULL)
12669 return FALSE;
12670
eea6121a 12671 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12672 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12673 stub_sec != NULL;
12674 stub_sec = stub_sec->next)
eea6121a
AM		 12675 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12676 && stub_sec->size != 0)
e717da7e 12677 {
e7d1c40c 12678 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12679 if (stub_sec->contents == NULL)
12680 return FALSE;
12681 /* We want to check that built size is the same as calculated
12682 size. rawsize is a convenient location to use. */
12683 stub_sec->rawsize = stub_sec->size;
12684 stub_sec->size = 0;
e717da7e 12685 }
5d1634d7 12686
23eb7e01 12687 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12688 {
9f951329 12689 unsigned int indx;
ad8e1ba5 12690 bfd_vma plt0;
9f951329 12691
721956f4 12692 /* Build the .glink plt call stub. */
e7d1c40c 12693 if (htab->params->emit_stub_syms)
97b639ba
AM		 12694 {
12695 struct elf_link_hash_entry *h;
468392fb
AM		 12696 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12697 TRUE, FALSE, FALSE);
97b639ba
AM		 12698 if (h == NULL)
12699 return FALSE;
12700 if (h->root.type == bfd_link_hash_new)
12701 {
12702 h->root.type = bfd_link_hash_defined;
12703 h->root.u.def.section = htab->glink;
ee4bf8d2 12704 h->root.u.def.value = 8;
f5385ebf
AM		 12705 h->ref_regular = 1;
12706 h->def_regular = 1;
12707 h->ref_regular_nonweak = 1;
12708 h->forced_local = 1;
12709 h->non_elf = 0;
97b639ba
AM		 12710 }
12711 }
33e44f2e
AM		 12712 plt0 = (htab->elf.splt->output_section->vma
12713 + htab->elf.splt->output_offset
12714 - 16);
176a0d42
AM		 12715 if (info->emitrelocations)
12716 {
12717 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12718 if (r == NULL)
12719 return FALSE;
12720 r->r_offset = (htab->glink->output_offset
12721 + htab->glink->output_section->vma);
12722 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12723 r->r_addend = plt0;
12724 }
4ce794b7 12725 p = htab->glink->contents;
176a0d42 12726 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12727 bfd_put_64 (htab->glink->owner, plt0, p);
12728 p += 8;
b9e5796b
AM		 12729 if (htab->opd_abi)
12730 {
12731 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12732 p += 4;
12733 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12734 p += 4;
12735 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12736 p += 4;
12737 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12738 p += 4;
12739 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12740 p += 4;
12741 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12742 p += 4;
12743 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12744 p += 4;
12745 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12746 p += 4;
12747 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12748 p += 4;
12749 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12750 p += 4;
12751 }
12752 else
12753 {
12754 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12755 p += 4;
12756 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12757 p += 4;
12758 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12759 p += 4;
12760 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12761 p += 4;
12762 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12763 p += 4;
12764 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12765 p += 4;
12766 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12767 p += 4;
12768 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12769 p += 4;
12770 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12771 p += 4;
12772 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12773 p += 4;
12774 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12775 p += 4;
12776 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12777 p += 4;
12778 }
4ce794b7 12779 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12780 p += 4;
ee4bf8d2
AM		 12781 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12782 {
12783 bfd_put_32 (htab->glink->owner, NOP, p);
12784 p += 4;
12785 }
ad8e1ba5 12786
9f951329
AM		 12787 /* Build the .glink lazy link call stubs. */
12788 indx = 0;
a345bc8d 12789 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12790 {
b9e5796b 12791 if (htab->opd_abi)
9f951329 12792 {
b9e5796b
AM		 12793 if (indx < 0x8000)
12794 {
12795 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12796 p += 4;
12797 }
12798 else
12799 {
12800 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12801 p += 4;
12802 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12803 p);
12804 p += 4;
12805 }
9f951329 12806 }
4ce794b7 12807 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12808 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12809 indx++;
9f951329
AM		 12810 p += 4;
12811 }
a345bc8d
AM		 12812
12813 /* Build .glink global entry stubs. */
12814 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12815 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12816 }
5d1634d7 12817
7341d5e2 12818 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12819 {
4ce794b7 12820 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12821 htab->brlt->size);
4ce794b7 12822 if (htab->brlt->contents == NULL)
b34976b6 12823 return FALSE;
721956f4 12824 }
ee75fd95 12825 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12826 {
12827 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12828 htab->relbrlt->size);
63bc6f6c
AM		 12829 if (htab->relbrlt->contents == NULL)
12830 return FALSE;
12831 }
5d1634d7 12832
721956f4
AM		 12833 /* Build the stubs as directed by the stub hash table. */
12834 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12835
aa8a7074
AM		 12836 if (htab->relbrlt != NULL)
12837 htab->relbrlt->reloc_count = 0;
12838
e7d1c40c
AM		 12839 if (htab->params->plt_stub_align != 0)
12840 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12841 stub_sec != NULL;
12842 stub_sec = stub_sec->next)
12843 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12844 stub_sec->size = ((stub_sec->size
12845 + (1 << htab->params->plt_stub_align) - 1)
12846 & (-1 << htab->params->plt_stub_align));
794e51c0 12847
e7d1c40c 12848 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12849 stub_sec != NULL;
12850 stub_sec = stub_sec->next)
e717da7e
AM		 12851 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12852 {
12853 stub_sec_count += 1;
eea6121a 12854 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12855 break;
12856 }
5d1634d7 12857
da44f4e5
AM		 12858 /* Note that the glink_eh_frame check here is not only testing that
12859 the generated size matched the calculated size but also that
12860 bfd_elf_discard_info didn't make any changes to the section. */
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 {
4805fc55
AM		 13787 if (stub_entry->stub_type == ppc_stub_plt_call
13788 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13789 info->callbacks->einfo
13790 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13791 "recompile with -fPIC\n"),
13792 input_bfd, input_section, rel->r_offset, sym_name);
13793 else
13794 info->callbacks->einfo
13795 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13796 "(-mcmodel=small toc adjust stub)\n"),
13797 input_bfd, input_section, rel->r_offset, sym_name);
ba8ca3e7
AM		 13798
13799 bfd_set_error (bfd_error_bad_value);
13800 ret = FALSE;
721956f4
AM		 13801 }
13802
b25116a9 13803 if (can_plt_call
794e51c0
AM		 13804 && (stub_entry->stub_type == ppc_stub_plt_call
13805 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13806 unresolved_reloc = FALSE;
13807 }
13808
6abec6bc
AM		 13809 if ((stub_entry == NULL
13810 || stub_entry->stub_type == ppc_stub_long_branch
13811 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13812 && get_opd_info (sec) != NULL)
13813 {
13814 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13815 bfd_vma off = (relocation + addend
13816 - sec->output_section->vma
13817 - sec->output_offset);
aef36ac1 13818 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13819 if (dest != (bfd_vma) -1)
13820 {
13821 relocation = dest;
13822 addend = 0;
bc30df16 13823 reloc_dest = DEST_OPD;
8387904d
AM		 13824 }
13825 }
13826
b25116a9
AM		 13827 /* If the branch is out of reach we ought to have a long
13828 branch stub. */
13829 from = (rel->r_offset
13830 + input_section->output_offset
13831 + input_section->output_section->vma);
13832
6911b7dc
AM		 13833 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13834 ? fdh->elf.other
13835 : sym->st_other);
13836
6abec6bc
AM		 13837 if (stub_entry != NULL
13838 && (stub_entry->stub_type == ppc_stub_long_branch
13839 || stub_entry->stub_type == ppc_stub_plt_branch)
13840 && (r_type == R_PPC64_ADDR14_BRTAKEN
13841 || r_type == R_PPC64_ADDR14_BRNTAKEN
13842 || (relocation + addend - from + max_br_offset
13843 < 2 * max_br_offset)))
13844 /* Don't use the stub if this branch is in range. */
13845 stub_entry = NULL;
b25116a9
AM		 13846
13847 if (stub_entry != NULL)
13848 {
13849 /* Munge up the value and addend so that we call the stub
13850 rather than the procedure directly. */
13851 relocation = (stub_entry->stub_offset
13852 + stub_entry->stub_sec->output_offset
13853 + stub_entry->stub_sec->output_section->vma);
13854 addend = 0;
bc30df16 13855 reloc_dest = DEST_STUB;
3b421ab3 13856
794e51c0
AM		 13857 if ((stub_entry->stub_type == ppc_stub_plt_call
13858 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13859 && (ALWAYS_EMIT_R2SAVE
13860 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13861 && rel + 1 < relend
13862 && rel[1].r_offset == rel->r_offset + 4
13863 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13864 relocation += 4;
b25116a9
AM		 13865 }
13866
13867 if (insn != 0)
13868 {
794e51c0 13869 if (is_isa_v2)
721956f4 13870 {
b25116a9
AM		 13871 /* Set 'a' bit. This is 0b00010 in BO field for branch
13872 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13873 for branch on CTR insns (BO == 1a00t or 1a01t). */
13874 if ((insn & (0x14 << 21)) == (0x04 << 21))
13875 insn |= 0x02 << 21;
13876 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13877 insn |= 0x08 << 21;
13878 else
13879 break;
13880 }
13881 else
13882 {
13883 /* Invert 'y' bit if not the default. */
4cc603a5 13884 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13885 insn ^= 0x01 << 21;
721956f4 13886 }
b25116a9
AM		 13887
13888 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13889 }
e86ce104 13890
06da1e8e
AM		 13891 /* NOP out calls to undefined weak functions.
13892 We can thus call a weak function without first
13893 checking whether the function is defined. */
b25116a9 13894 else if (h != NULL
039b3fef 13895 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13896 && h->elf.dynindx == -1
b25116a9
AM		 13897 && r_type == R_PPC64_REL24
13898 && relocation == 0
4cc603a5 13899 && addend == 0)
e86ce104 13900 {
06da1e8e
AM		 13901 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13902 continue;
e86ce104 13903 }
65f38f15
AM		 13904 break;
13905 }
5bd4f169 13906
65f38f15 13907 /* Set `addend'. */
411e1bfb 13908 tls_type = 0;
65f38f15
AM		 13909 switch (r_type)
13910 {
13911 default:
25f53a85 13912 info->callbacks->einfo
bc30df16 13913 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13914 input_bfd, (int) r_type, sym_name);
5bd4f169 13915
65f38f15 13916 bfd_set_error (bfd_error_bad_value);
b34976b6 13917 ret = FALSE;
65f38f15 13918 continue;
5bd4f169 13919
65f38f15 13920 case R_PPC64_NONE:
411e1bfb 13921 case R_PPC64_TLS:
727fc41e
AM		 13922 case R_PPC64_TLSGD:
13923 case R_PPC64_TLSLD:
3b421ab3 13924 case R_PPC64_TOCSAVE:
04c9666a
AM		 13925 case R_PPC64_GNU_VTINHERIT:
13926 case R_PPC64_GNU_VTENTRY:
65f38f15 13927 continue;
5bd4f169
AM		 13928
13929 /* GOT16 relocations. Like an ADDR16 using the symbol's
13930 address in the GOT as relocation value instead of the
411e1bfb 13931 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13932 symbol and put the symbol value there. */
411e1bfb
AM		 13933 case R_PPC64_GOT_TLSGD16:
13934 case R_PPC64_GOT_TLSGD16_LO:
13935 case R_PPC64_GOT_TLSGD16_HI:
13936 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13937 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 13938 goto dogot;
13939
13940 case R_PPC64_GOT_TLSLD16:
13941 case R_PPC64_GOT_TLSLD16_LO:
13942 case R_PPC64_GOT_TLSLD16_HI:
13943 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13944 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 13945 goto dogot;
13946
13947 case R_PPC64_GOT_TPREL16_DS:
13948 case R_PPC64_GOT_TPREL16_LO_DS:
13949 case R_PPC64_GOT_TPREL16_HI:
13950 case R_PPC64_GOT_TPREL16_HA:
13951 tls_type = TLS_TLS | TLS_TPREL;
13952 goto dogot;
13953
13954 case R_PPC64_GOT_DTPREL16_DS:
13955 case R_PPC64_GOT_DTPREL16_LO_DS:
13956 case R_PPC64_GOT_DTPREL16_HI:
13957 case R_PPC64_GOT_DTPREL16_HA:
13958 tls_type = TLS_TLS | TLS_DTPREL;
13959 goto dogot;
13960
65f38f15
AM		 13961 case R_PPC64_GOT16:
13962 case R_PPC64_GOT16_LO:
13963 case R_PPC64_GOT16_HI:
13964 case R_PPC64_GOT16_HA:
13965 case R_PPC64_GOT16_DS:
13966 case R_PPC64_GOT16_LO_DS:
411e1bfb 13967 dogot:
5bd4f169
AM		 13968 {
13969 /* Relocation is to the entry for this symbol in the global
13970 offset table. */
e717da7e 13971 asection *got;
d881513a 13972 bfd_vma *offp;
5bd4f169 13973 bfd_vma off;
d881513a 13974 unsigned long indx = 0;
927be08e 13975 struct got_entry *ent;
65f38f15 13976
d881513a
AM		 13977 if (tls_type == (TLS_TLS | TLS_LD)
13978 && (h == NULL
f5385ebf 13979 || !h->elf.def_dynamic))
927be08e 13980 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13981 else
5bd4f169 13982 {
5bd4f169 13983
d881513a
AM		 13984 if (h != NULL)
13985 {
13986 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 13987 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13988 &h->elf)
d881513a 13989 || (info->shared
afe397ea 13990 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 13991 /* This is actually a static link, or it is a
13992 -Bsymbolic link and the symbol is defined
13993 locally, or the symbol was forced to be local
13994 because of a version file. */
13995 ;
13996 else
13997 {
14acf4dc 13998 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 13999 indx = h->elf.dynindx;
d881513a
AM		 14000 unresolved_reloc = FALSE;
14001 }
039b3fef 14002 ent = h->elf.got.glist;
d881513a 14003 }
411e1bfb 14004 else
5bd4f169 14005 {
d881513a
AM		 14006 if (local_got_ents == NULL)
14007 abort ();
14008 ent = local_got_ents[r_symndx];
5bd4f169 14009 }
d881513a
AM		 14010
14011 for (; ent != NULL; ent = ent->next)
31c76678 14012 if (ent->addend == orig_rel.r_addend
e717da7e 14013 && ent->owner == input_bfd
d881513a
AM		 14014 && ent->tls_type == tls_type)
14015 break;
5bd4f169 14016 }
411e1bfb 14017
927be08e
AM		 14018 if (ent == NULL)
14019 abort ();
14020 if (ent->is_indirect)
14021 ent = ent->got.ent;
14022 offp = &ent->got.offset;
14023 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 14024 if (got == NULL)
14025 abort ();
14026
411e1bfb
AM		 14027 /* The offset must always be a multiple of 8. We use the
14028 least significant bit to record whether we have already
14029 processed this entry. */
d881513a 14030 off = *offp;
411e1bfb
AM		 14031 if ((off & 1) != 0)
14032 off &= ~1;
5bd4f169
AM		 14033 else
14034 {
411e1bfb
AM		 14035 /* Generate relocs for the dynamic linker, except in
14036 the case of TLSLD where we'll use one entry per
14037 module. */
25f23106
AM		 14038 asection *relgot;
14039 bfd_boolean ifunc;
e717da7e 14040
d881513a 14041 *offp = off | 1;
25f23106
AM		 14042 relgot = NULL;
14043 ifunc = (h != NULL
14044 ? h->elf.type == STT_GNU_IFUNC
14045 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14046 if (ifunc)
33e44f2e 14047 relgot = htab->elf.irelplt;
19e08130
AM		 14048 else if ((info->shared || indx != 0)
14049 && (h == NULL
14050 || (tls_type == (TLS_TLS | TLS_LD)
14051 && !h->elf.def_dynamic)
14052 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14053 || h->elf.root.type != bfd_link_hash_undefweak))
14054 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14055 if (relgot != NULL)
5bd4f169 14056 {
e717da7e
AM		 14057 outrel.r_offset = (got->output_section->vma
14058 + got->output_offset
411e1bfb 14059 + off);
4cc603a5 14060 outrel.r_addend = addend;
d881513a 14061 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14062 {
411e1bfb 14063 outrel.r_addend = 0;
e515b051 14064 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14065 if (tls_type == (TLS_TLS | TLS_GD))
14066 {
e717da7e
AM		 14067 loc = relgot->contents;
14068 loc += (relgot->reloc_count++
d881513a
AM		 14069 * sizeof (Elf64_External_Rela));
14070 bfd_elf64_swap_reloca_out (output_bfd,
14071 &outrel, loc);
e515b051 14072 outrel.r_offset += 8;
4cc603a5 14073 outrel.r_addend = addend;
d881513a
AM		 14074 outrel.r_info
14075 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14076 }
411e1bfb 14077 }
951fd09b 14078 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14079 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14080 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14081 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14082 else if (indx != 0)
14083 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14084 else
81407a69 14085 {
25f23106
AM		 14086 if (ifunc)
14087 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14088 else
14089 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14090
14091 /* Write the .got section contents for the sake
14092 of prelink. */
e717da7e 14093 loc = got->contents + off;
23fbd6fa
JJ		 14094 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14095 loc);
81407a69 14096 }
81407a69
AM		 14097
14098 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14099 {
14100 outrel.r_addend += relocation;
14101 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 14102 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 14103 }
e717da7e
AM		 14104 loc = relgot->contents;
14105 loc += (relgot->reloc_count++
411e1bfb
AM		 14106 * sizeof (Elf64_External_Rela));
14107 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14108 }
14109
ad8e1ba5 14110 /* Init the .got section contents here if we're not
81407a69 14111 emitting a reloc. */
d881513a 14112 else
411e1bfb 14113 {
4cc603a5 14114 relocation += addend;
7b609f53
AM		 14115 if (tls_type == (TLS_TLS | TLS_LD))
14116 relocation = 1;
14117 else if (tls_type != 0)
411e1bfb 14118 {
e1918d23 14119 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 14120 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14121 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 14122
7b609f53
AM		 14123 if (tls_type == (TLS_TLS | TLS_GD))
14124 {
14125 bfd_put_64 (output_bfd, relocation,
e717da7e 14126 got->contents + off + 8);
7b609f53
AM		 14127 relocation = 1;
14128 }
411e1bfb 14129 }
7b609f53 14130
411e1bfb 14131 bfd_put_64 (output_bfd, relocation,
e717da7e 14132 got->contents + off);
5bd4f169
AM		 14133 }
14134 }
14135
65f38f15
AM		 14136 if (off >= (bfd_vma) -2)
14137 abort ();
14138
bf102f86
AM		 14139 relocation = got->output_section->vma + got->output_offset + off;
14140 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 14141 }
65f38f15
AM		 14142 break;
14143
14144 case R_PPC64_PLT16_HA:
14145 case R_PPC64_PLT16_HI:
14146 case R_PPC64_PLT16_LO:
14147 case R_PPC64_PLT32:
14148 case R_PPC64_PLT64:
14149 /* Relocation is to the entry for this symbol in the
14150 procedure linkage table. */
14151
14152 /* Resolve a PLT reloc against a local symbol directly,
14153 without using the procedure linkage table. */
14154 if (h == NULL)
14155 break;
14156
411e1bfb
AM		 14157 /* It's possible that we didn't make a PLT entry for this
14158 symbol. This happens when statically linking PIC code,
14159 or when using -Bsymbolic. Go find a match if there is a
14160 PLT entry. */
33e44f2e 14161 if (htab->elf.splt != NULL)
65f38f15 14162 {
411e1bfb 14163 struct plt_entry *ent;
039b3fef 14164 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14165 if (ent->plt.offset != (bfd_vma) -1
14166 && ent->addend == orig_rel.r_addend)
411e1bfb 14167 {
33e44f2e
AM		 14168 relocation = (htab->elf.splt->output_section->vma
14169 + htab->elf.splt->output_offset
411e1bfb
AM		 14170 + ent->plt.offset);
14171 unresolved_reloc = FALSE;
a345bc8d 14172 break;
411e1bfb 14173 }
65f38f15 14174 }
65f38f15 14175 break;
5bd4f169 14176
0b13192e
AM		 14177 case R_PPC64_TOC:
14178 /* Relocation value is TOC base. */
14179 relocation = TOCstart;
cf35638d 14180 if (r_symndx == STN_UNDEF)
0b13192e 14181 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 14182 else if (unresolved_reloc)
14183 ;
14184 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 14185 relocation += htab->stub_group[sec->id].toc_off;
14186 else
14187 unresolved_reloc = TRUE;
ab96bf03 14188 goto dodyn;
0b13192e 14189
5bd4f169
AM		 14190 /* TOC16 relocs. We want the offset relative to the TOC base,
14191 which is the address of the start of the TOC plus 0x8000.
14192 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14193 in this order. */
65f38f15
AM		 14194 case R_PPC64_TOC16:
14195 case R_PPC64_TOC16_LO:
14196 case R_PPC64_TOC16_HI:
14197 case R_PPC64_TOC16_DS:
14198 case R_PPC64_TOC16_LO_DS:
14199 case R_PPC64_TOC16_HA:
ad8e1ba5 14200 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 14201 break;
14202
14203 /* Relocate against the beginning of the section. */
65f38f15
AM		 14204 case R_PPC64_SECTOFF:
14205 case R_PPC64_SECTOFF_LO:
14206 case R_PPC64_SECTOFF_HI:
14207 case R_PPC64_SECTOFF_DS:
14208 case R_PPC64_SECTOFF_LO_DS:
14209 case R_PPC64_SECTOFF_HA:
4ce794b7 14210 if (sec != NULL)
65f38f15 14211 addend -= sec->output_section->vma;
5bd4f169
AM		 14212 break;
14213
25f23106
AM		 14214 case R_PPC64_REL16:
14215 case R_PPC64_REL16_LO:
14216 case R_PPC64_REL16_HI:
14217 case R_PPC64_REL16_HA:
14218 break;
14219
721956f4
AM		 14220 case R_PPC64_REL14:
14221 case R_PPC64_REL14_BRNTAKEN:
14222 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14223 case R_PPC64_REL24:
14224 break;
14225
411e1bfb
AM		 14226 case R_PPC64_TPREL16:
14227 case R_PPC64_TPREL16_LO:
14228 case R_PPC64_TPREL16_HI:
14229 case R_PPC64_TPREL16_HA:
14230 case R_PPC64_TPREL16_DS:
14231 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14232 case R_PPC64_TPREL16_HIGH:
14233 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14234 case R_PPC64_TPREL16_HIGHER:
14235 case R_PPC64_TPREL16_HIGHERA:
14236 case R_PPC64_TPREL16_HIGHEST:
14237 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14238 if (h != NULL
14239 && h->elf.root.type == bfd_link_hash_undefweak
14240 && h->elf.dynindx == -1)
14241 {
14242 /* Make this relocation against an undefined weak symbol
14243 resolve to zero. This is really just a tweak, since
14244 code using weak externs ought to check that they are
14245 defined before using them. */
14246 bfd_byte *p = contents + rel->r_offset - d_offset;
14247
14248 insn = bfd_get_32 (output_bfd, p);
14249 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14250 if (insn != 0)
14251 bfd_put_32 (output_bfd, insn, p);
14252 break;
14253 }
e1918d23 14254 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14255 if (info->shared)
14256 /* The TPREL16 relocs shouldn't really be used in shared
14257 libs as they will result in DT_TEXTREL being set, but
14258 support them anyway. */
14259 goto dodyn;
14260 break;
14261
14262 case R_PPC64_DTPREL16:
14263 case R_PPC64_DTPREL16_LO:
14264 case R_PPC64_DTPREL16_HI:
14265 case R_PPC64_DTPREL16_HA:
14266 case R_PPC64_DTPREL16_DS:
14267 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14268 case R_PPC64_DTPREL16_HIGH:
14269 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14270 case R_PPC64_DTPREL16_HIGHER:
14271 case R_PPC64_DTPREL16_HIGHERA:
14272 case R_PPC64_DTPREL16_HIGHEST:
14273 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 14274 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14275 break;
14276
45965137
AM		 14277 case R_PPC64_ADDR64_LOCAL:
14278 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14279 ? h->elf.other
14280 : sym->st_other);
14281 break;
14282
e515b051
AM		 14283 case R_PPC64_DTPMOD64:
14284 relocation = 1;
14285 addend = 0;
14286 goto dodyn;
14287
411e1bfb 14288 case R_PPC64_TPREL64:
e1918d23 14289 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14290 goto dodyn;
14291
14292 case R_PPC64_DTPREL64:
e1918d23 14293 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14294 /* Fall thru */
14295
65f38f15
AM		 14296 /* Relocations that may need to be propagated if this is a
14297 dynamic object. */
04c9666a 14298 case R_PPC64_REL30:
65f38f15
AM		 14299 case R_PPC64_REL32:
14300 case R_PPC64_REL64:
14301 case R_PPC64_ADDR14:
14302 case R_PPC64_ADDR14_BRNTAKEN:
14303 case R_PPC64_ADDR14_BRTAKEN:
14304 case R_PPC64_ADDR16:
14305 case R_PPC64_ADDR16_DS:
14306 case R_PPC64_ADDR16_HA:
14307 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14308 case R_PPC64_ADDR16_HIGH:
14309 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14310 case R_PPC64_ADDR16_HIGHER:
14311 case R_PPC64_ADDR16_HIGHERA:
14312 case R_PPC64_ADDR16_HIGHEST:
14313 case R_PPC64_ADDR16_HIGHESTA:
14314 case R_PPC64_ADDR16_LO:
14315 case R_PPC64_ADDR16_LO_DS:
14316 case R_PPC64_ADDR24:
65f38f15
AM		 14317 case R_PPC64_ADDR32:
14318 case R_PPC64_ADDR64:
14319 case R_PPC64_UADDR16:
14320 case R_PPC64_UADDR32:
14321 case R_PPC64_UADDR64:
411e1bfb 14322 dodyn:
5d1634d7 14323 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14324 break;
14325
41bd81ab
AM		 14326 if (NO_OPD_RELOCS && is_opd)
14327 break;
14328
65f38f15 14329 if ((info->shared
4e795f50 14330 && (h == NULL
039b3fef
AM		 14331 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14332 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14333 && (must_be_dyn_reloc (info, r_type)
039b3fef 14334 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 14335 || (ELIMINATE_COPY_RELOCS
14336 && !info->shared
65f38f15 14337 && h != NULL
039b3fef 14338 && h->elf.dynindx != -1
f5385ebf 14339 && !h->elf.non_got_ref
25f23106
AM		 14340 && !h->elf.def_regular)
14341 || (!info->shared
14342 && (h != NULL
14343 ? h->elf.type == STT_GNU_IFUNC
14344 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14345 {
b34976b6 14346 bfd_boolean skip, relocate;
65f38f15 14347 asection *sreloc;
1cf1f670 14348 bfd_vma out_off;
65f38f15
AM		 14349
14350 /* When generating a dynamic object, these relocations
14351 are copied into the output file to be resolved at run
14352 time. */
14353
b34976b6
AM		 14354 skip = FALSE;
14355 relocate = FALSE;
65f38f15 14356
1cf1f670
AM		 14357 out_off = _bfd_elf_section_offset (output_bfd, info,
14358 input_section, rel->r_offset);
14359 if (out_off == (bfd_vma) -1)
b34976b6 14360 skip = TRUE;
1cf1f670 14361 else if (out_off == (bfd_vma) -2)
b34976b6 14362 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14363 out_off += (input_section->output_section->vma
14364 + input_section->output_offset);
14365 outrel.r_offset = out_off;
411e1bfb 14366 outrel.r_addend = rel->r_addend;
65f38f15 14367
1cf1f670
AM		 14368 /* Optimize unaligned reloc use. */
14369 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14370 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14371 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14372 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14373 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14374 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14375 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14376 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14377 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14378
65f38f15 14379 if (skip)
0bb2d96a 14380 memset (&outrel, 0, sizeof outrel);
afe397ea 14381 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14382 && !is_opd
14383 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14384 {
14385 BFD_ASSERT (h->elf.dynindx != -1);
14386 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14387 }
65f38f15
AM		 14388 else
14389 {
41bd81ab
AM		 14390 /* This symbol is local, or marked to become local,
14391 or this is an opd section reloc which must point
14392 at a local function. */
65f38f15 14393 outrel.r_addend += relocation;
e86ce104 14394 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14395 {
3fad3c7c 14396 if (is_opd && h != NULL)
afbe61cf
AM		 14397 {
14398 /* Lie about opd entries. This case occurs
14399 when building shared libraries and we
14400 reference a function in another shared
3fad3c7c
AM		 14401 lib. The same thing happens for a weak
14402 definition in an application that's
14403 overridden by a strong definition in a
14404 shared lib. (I believe this is a generic
14405 bug in binutils handling of weak syms.)
14406 In these cases we won't use the opd
1e2f5b6e 14407 entry in this lib. */
b34976b6 14408 unresolved_reloc = FALSE;
afbe61cf 14409 }
25f23106
AM		 14410 if (!is_opd
14411 && r_type == R_PPC64_ADDR64
14412 && (h != NULL
14413 ? h->elf.type == STT_GNU_IFUNC
14414 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14415 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14416 else
14417 {
14418 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14419
25f23106
AM		 14420 /* We need to relocate .opd contents for ld.so.
14421 Prelink also wants simple and consistent rules
14422 for relocs. This make all RELATIVE relocs have
14423 *r_offset equal to r_addend. */
14424 relocate = TRUE;
14425 }
65f38f15
AM		 14426 }
14427 else
14428 {
14429 long indx = 0;
14430
25f23106
AM		 14431 if (h != NULL
14432 ? h->elf.type == STT_GNU_IFUNC
14433 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14434 {
25f53a85 14435 info->callbacks->einfo
bc30df16
AM		 14436 (_("%P: %H: %s for indirect "
14437 "function `%T' unsupported\n"),
25f53a85 14438 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14439 ppc64_elf_howto_table[r_type]->name,
14440 sym_name);
14441 ret = FALSE;
14442 }
cf35638d 14443 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14444 ;
14445 else if (sec == NULL || sec->owner == NULL)
14446 {
14447 bfd_set_error (bfd_error_bad_value);
b34976b6 14448 return FALSE;
65f38f15
AM		 14449 }
14450 else
14451 {
14452 asection *osec;
14453
14454 osec = sec->output_section;
14455 indx = elf_section_data (osec)->dynindx;
14456
74541ad4
AM		 14457 if (indx == 0)
14458 {
14459 if ((osec->flags & SEC_READONLY) == 0
14460 && htab->elf.data_index_section != NULL)
14461 osec = htab->elf.data_index_section;
14462 else
14463 osec = htab->elf.text_index_section;
14464 indx = elf_section_data (osec)->dynindx;
14465 }
14466 BFD_ASSERT (indx != 0);
14467
65f38f15
AM		 14468 /* We are turning this relocation into one
14469 against a section symbol, so subtract out
14470 the output section's address but not the
14471 offset of the input section in the output
14472 section. */
14473 outrel.r_addend -= osec->vma;
14474 }
14475
14476 outrel.r_info = ELF64_R_INFO (indx, r_type);
14477 }
14478 }
14479
14480 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14481 if (h != NULL
14482 ? h->elf.type == STT_GNU_IFUNC
14483 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14484 sreloc = htab->elf.irelplt;
65f38f15
AM		 14485 if (sreloc == NULL)
14486 abort ();
14487
dfbb6ac9
AM		 14488 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14489 >= sreloc->size)
14490 abort ();
947216bf
AM		 14491 loc = sreloc->contents;
14492 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14493 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14494
14495 /* If this reloc is against an external symbol, it will
14496 be computed at runtime, so there's no need to do
81407a69
AM		 14497 anything now. However, for the sake of prelink ensure
14498 that the section contents are a known value. */
65f38f15 14499 if (! relocate)
81407a69
AM		 14500 {
14501 unresolved_reloc = FALSE;
14502 /* The value chosen here is quite arbitrary as ld.so
14503 ignores section contents except for the special
14504 case of .opd where the contents might be accessed
14505 before relocation. Choose zero, as that won't
14506 cause reloc overflow. */
14507 relocation = 0;
14508 addend = 0;
14509 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14510 to improve backward compatibility with older
14511 versions of ld. */
14512 if (r_type == R_PPC64_ADDR64)
14513 addend = outrel.r_addend;
14514 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14515 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14516 addend = (input_section->output_section->vma
14517 + input_section->output_offset
14518 + rel->r_offset);
81407a69 14519 }
65f38f15 14520 }
5bd4f169
AM		 14521 break;
14522
65f38f15
AM		 14523 case R_PPC64_COPY:
14524 case R_PPC64_GLOB_DAT:
14525 case R_PPC64_JMP_SLOT:
25f23106 14526 case R_PPC64_JMP_IREL:
65f38f15
AM		 14527 case R_PPC64_RELATIVE:
14528 /* We shouldn't ever see these dynamic relocs in relocatable
14529 files. */
ae9a127f 14530 /* Fall through. */
65f38f15
AM		 14531
14532 case R_PPC64_PLTGOT16:
14533 case R_PPC64_PLTGOT16_DS:
14534 case R_PPC64_PLTGOT16_HA:
14535 case R_PPC64_PLTGOT16_HI:
14536 case R_PPC64_PLTGOT16_LO:
14537 case R_PPC64_PLTGOT16_LO_DS:
14538 case R_PPC64_PLTREL32:
14539 case R_PPC64_PLTREL64:
14540 /* These ones haven't been implemented yet. */
14541
25f53a85 14542 info->callbacks->einfo
bc30df16 14543 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14544 input_bfd,
4ce794b7 14545 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14546
14547 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14548 ret = FALSE;
5bd4f169 14549 continue;
65f38f15 14550 }
5bd4f169 14551
67f0cbdb
AM		 14552 /* Multi-instruction sequences that access the TOC can be
14553 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14554 to nop; addi rb,r2,x; */
14555 switch (r_type)
14556 {
14557 default:
14558 break;
14559
14560 case R_PPC64_GOT_TLSLD16_HI:
14561 case R_PPC64_GOT_TLSGD16_HI:
14562 case R_PPC64_GOT_TPREL16_HI:
14563 case R_PPC64_GOT_DTPREL16_HI:
14564 case R_PPC64_GOT16_HI:
14565 case R_PPC64_TOC16_HI:
14566 /* These relocs would only be useful if building up an
14567 offset to later add to r2, perhaps in an indexed
14568 addressing mode instruction. Don't try to optimize.
14569 Unfortunately, the possibility of someone building up an
14570 offset like this or even with the HA relocs, means that
14571 we need to check the high insn when optimizing the low
14572 insn. */
14573 break;
14574
14575 case R_PPC64_GOT_TLSLD16_HA:
14576 case R_PPC64_GOT_TLSGD16_HA:
14577 case R_PPC64_GOT_TPREL16_HA:
14578 case R_PPC64_GOT_DTPREL16_HA:
14579 case R_PPC64_GOT16_HA:
14580 case R_PPC64_TOC16_HA:
98528052 14581 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14582 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14583 {
14584 bfd_byte *p = contents + (rel->r_offset & ~3);
14585 bfd_put_32 (input_bfd, NOP, p);
14586 }
67f0cbdb
AM		 14587 break;
14588
14589 case R_PPC64_GOT_TLSLD16_LO:
14590 case R_PPC64_GOT_TLSGD16_LO:
14591 case R_PPC64_GOT_TPREL16_LO_DS:
14592 case R_PPC64_GOT_DTPREL16_LO_DS:
14593 case R_PPC64_GOT16_LO:
14594 case R_PPC64_GOT16_LO_DS:
14595 case R_PPC64_TOC16_LO:
14596 case R_PPC64_TOC16_LO_DS:
98528052 14597 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14598 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14599 {
14600 bfd_byte *p = contents + (rel->r_offset & ~3);
14601 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14602 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14603 {
14604 /* Transform addic to addi when we change reg. */
14605 insn &= ~((0x3f << 26) | (0x1f << 16));
14606 insn |= (14u << 26) | (2 << 16);
14607 }
14608 else
67f0cbdb 14609 {
98528052
AM		 14610 insn &= ~(0x1f << 16);
14611 insn |= 2 << 16;
67f0cbdb 14612 }
560c8763 14613 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14614 }
14615 break;
14616 }
14617
65f38f15 14618 /* Do any further special processing. */
b80eed39 14619 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14620 switch (r_type)
14621 {
14622 default:
14623 break;
14624
25f23106 14625 case R_PPC64_REL16_HA:
f9c6b907
AM		 14626 case R_PPC64_ADDR16_HA:
14627 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14628 case R_PPC64_ADDR16_HIGHERA:
14629 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14630 case R_PPC64_TOC16_HA:
14631 case R_PPC64_SECTOFF_HA:
411e1bfb 14632 case R_PPC64_TPREL16_HA:
f9c6b907 14633 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14634 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14635 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14636 case R_PPC64_DTPREL16_HA:
14637 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14638 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14639 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14640 /* It's just possible that this symbol is a weak symbol
14641 that's not actually defined anywhere. In that case,
14642 'sec' would be NULL, and we should leave the symbol
14643 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14644 if (sec == NULL)
14645 break;
14646 /* Fall thru */
14647
14648 case R_PPC64_GOT16_HA:
14649 case R_PPC64_PLTGOT16_HA:
14650 case R_PPC64_PLT16_HA:
14651 case R_PPC64_GOT_TLSGD16_HA:
14652 case R_PPC64_GOT_TLSLD16_HA:
14653 case R_PPC64_GOT_TPREL16_HA:
14654 case R_PPC64_GOT_DTPREL16_HA:
14655 /* Add 0x10000 if sign bit in 0:15 is set.
14656 Bits 0:15 are not used. */
14657 addend += 0x8000;
65f38f15
AM		 14658 break;
14659
14660 case R_PPC64_ADDR16_DS:
14661 case R_PPC64_ADDR16_LO_DS:
14662 case R_PPC64_GOT16_DS:
14663 case R_PPC64_GOT16_LO_DS:
14664 case R_PPC64_PLT16_LO_DS:
14665 case R_PPC64_SECTOFF_DS:
14666 case R_PPC64_SECTOFF_LO_DS:
14667 case R_PPC64_TOC16_DS:
14668 case R_PPC64_TOC16_LO_DS:
14669 case R_PPC64_PLTGOT16_DS:
14670 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14671 case R_PPC64_GOT_TPREL16_DS:
14672 case R_PPC64_GOT_TPREL16_LO_DS:
14673 case R_PPC64_GOT_DTPREL16_DS:
14674 case R_PPC64_GOT_DTPREL16_LO_DS:
14675 case R_PPC64_TPREL16_DS:
14676 case R_PPC64_TPREL16_LO_DS:
14677 case R_PPC64_DTPREL16_DS:
14678 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14679 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14680 mask = 3;
14681 /* If this reloc is against an lq insn, then the value must be
14682 a multiple of 16. This is somewhat of a hack, but the
14683 "correct" way to do this by defining _DQ forms of all the
14684 _DS relocs bloats all reloc switches in this file. It
14685 doesn't seem to make much sense to use any of these relocs
14686 in data, so testing the insn should be safe. */
494dac0c 14687 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14688 mask = 15;
14689 if (((relocation + addend) & mask) != 0)
65f38f15 14690 {
25f53a85 14691 info->callbacks->einfo
8de848d8 14692 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14693 input_bfd, input_section, rel->r_offset,
b80eed39 14694 howto->name,
adadcc0c 14695 mask + 1);
65f38f15 14696 bfd_set_error (bfd_error_bad_value);
b34976b6 14697 ret = FALSE;
65f38f15
AM		 14698 continue;
14699 }
14700 break;
5bd4f169
AM		 14701 }
14702
239e1f3a
AM		 14703 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14704 because such sections are not SEC_ALLOC and thus ld.so will
14705 not process them. */
65f38f15 14706 if (unresolved_reloc
239e1f3a 14707 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14708 && h->elf.def_dynamic)
14709 && _bfd_elf_section_offset (output_bfd, info, input_section,
14710 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14711 {
25f53a85 14712 info->callbacks->einfo
bc30df16 14713 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14714 input_bfd, input_section, rel->r_offset,
b80eed39 14715 howto->name,
039b3fef 14716 h->elf.root.root.string);
b34976b6 14717 ret = FALSE;
9c07fe7c 14718 }
5bd4f169 14719
b80eed39
AM		 14720 /* 16-bit fields in insns mostly have signed values, but a
14721 few insns have 16-bit unsigned values. Really, we should
14722 have different reloc types. */
14723 if (howto->complain_on_overflow != complain_overflow_dont
14724 && howto->dst_mask == 0xffff
14725 && (input_section->flags & SEC_CODE) != 0)
14726 {
14727 enum complain_overflow complain = complain_overflow_signed;
14728
14729 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14730 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14731 complain = complain_overflow_bitfield;
14732 else if (howto->rightshift == 0
14733 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14734 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14735 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14736 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14737 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14738 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14739 complain = complain_overflow_unsigned;
14740 if (howto->complain_on_overflow != complain)
14741 {
14742 alt_howto = *howto;
14743 alt_howto.complain_on_overflow = complain;
14744 howto = &alt_howto;
14745 }
14746 }
14747
14748 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14749 rel->r_offset, relocation, addend);
5bd4f169 14750
ef60b7ff 14751 if (r != bfd_reloc_ok)
5bd4f169 14752 {
bc30df16 14753 char *more_info = NULL;
b80eed39 14754 const char *reloc_name = howto->name;
bc30df16
AM		 14755
14756 if (reloc_dest != DEST_NORMAL)
14757 {
14758 more_info = bfd_malloc (strlen (reloc_name) + 8);
14759 if (more_info != NULL)
14760 {
14761 strcpy (more_info, reloc_name);
14762 strcat (more_info, (reloc_dest == DEST_OPD
14763 ? " (OPD)" : " (stub)"));
14764 reloc_name = more_info;
14765 }
14766 }
14767
cd27b276 14768 if (r == bfd_reloc_overflow)
5bd4f169 14769 {
cd27b276
AM		 14770 if (warned)
14771 continue;
14772 if (h != NULL
039b3fef 14773 && h->elf.root.type == bfd_link_hash_undefweak
b80eed39 14774 && howto->pc_relative)
5bd4f169
AM		 14775 {
14776 /* Assume this is a call protected by other code that
14777 detects the symbol is undefined. If this is the case,
14778 we can safely ignore the overflow. If not, the
14779 program is hosed anyway, and a little warning isn't
14780 going to help. */
14781
14782 continue;
14783 }
14784
ef60b7ff 14785 if (!((*info->callbacks->reloc_overflow)
bc30df16
AM		 14786 (info, &h->elf.root, sym_name,
14787 reloc_name, orig_rel.r_addend,
14788 input_bfd, input_section, rel->r_offset)))
b34976b6 14789 return FALSE;
ef60b7ff
AM		 14790 }
14791 else
14792 {
25f53a85 14793 info->callbacks->einfo
bc30df16 14794 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14795 input_bfd, input_section, rel->r_offset,
bc30df16 14796 reloc_name, sym_name, (int) r);
b34976b6 14797 ret = FALSE;
ef60b7ff 14798 }
bc30df16
AM		 14799 if (more_info != NULL)
14800 free (more_info);
5bd4f169 14801 }
5bd4f169
AM		 14802 }
14803
645ea6a9
AM		 14804 /* If we're emitting relocations, then shortly after this function
14805 returns, reloc offsets and addends for this section will be
14806 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14807 file rather than the input. Save a copy of the relocs for
14808 opd_entry_value. */
4cc603a5 14809 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 14810 {
14811 bfd_size_type amt;
14812 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14813 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14814 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14815 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14816 if (rel == NULL)
14817 return FALSE;
14818 memcpy (rel, relocs, amt);
14819 }
5bd4f169
AM		 14820 return ret;
14821}
14822
754021d0
AM		 14823/* Adjust the value of any local symbols in opd sections. */
14824
6e0b88f1 14825static int
754021d0
AM		 14826ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14827 const char *name ATTRIBUTE_UNUSED,
14828 Elf_Internal_Sym *elfsym,
14829 asection *input_sec,
14830 struct elf_link_hash_entry *h)
14831{
74f0fb50
AM		 14832 struct _opd_sec_data *opd;
14833 long adjust;
754021d0
AM		 14834 bfd_vma value;
14835
4025353c 14836 if (h != NULL)
6e0b88f1 14837 return 1;
4025353c 14838
74f0fb50
AM		 14839 opd = get_opd_info (input_sec);
14840 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14841 return 1;
754021d0
AM		 14842
14843 value = elfsym->st_value - input_sec->output_offset;
14844 if (!info->relocatable)
14845 value -= input_sec->output_section->vma;
14846
74f0fb50 14847 adjust = opd->adjust[value / 8];
4025353c 14848 if (adjust == -1)
6e0b88f1
AM		 14849 return 2;
14850
14851 elfsym->st_value += adjust;
14852 return 1;
754021d0
AM		 14853}
14854
5bd4f169
AM		 14855/* Finish up dynamic symbol handling. We set the contents of various
14856 dynamic sections here. */
14857
b34976b6 14858static bfd_boolean
4ce794b7
AM		 14859ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14860 struct bfd_link_info *info,
14861 struct elf_link_hash_entry *h,
ab6dce23 14862 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14863{
65f38f15 14864 struct ppc_link_hash_table *htab;
8387904d
AM		 14865 struct plt_entry *ent;
14866 Elf_Internal_Rela rela;
14867 bfd_byte *loc;
5bd4f169 14868
65f38f15 14869 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14870 if (htab == NULL)
14871 return FALSE;
5bd4f169 14872
8387904d
AM		 14873 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14874 if (ent->plt.offset != (bfd_vma) -1)
14875 {
14876 /* This symbol has an entry in the procedure linkage
14877 table. Set it up. */
e054468f
AM		 14878 if (!htab->elf.dynamic_sections_created
14879 || h->dynindx == -1)
14880 {
14881 BFD_ASSERT (h->type == STT_GNU_IFUNC
14882 && h->def_regular
14883 && (h->root.type == bfd_link_hash_defined
14884 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14885 rela.r_offset = (htab->elf.iplt->output_section->vma
14886 + htab->elf.iplt->output_offset
25f23106 14887 + ent->plt.offset);
ee67d69a
AM		 14888 if (htab->opd_abi)
14889 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14890 else
14891 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14892 rela.r_addend = (h->root.u.def.value
14893 + h->root.u.def.section->output_offset
14894 + h->root.u.def.section->output_section->vma
14895 + ent->addend);
33e44f2e
AM		 14896 loc = (htab->elf.irelplt->contents
14897 + (htab->elf.irelplt->reloc_count++
25f23106 14898 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14899 }
14900 else
14901 {
33e44f2e
AM		 14902 rela.r_offset = (htab->elf.splt->output_section->vma
14903 + htab->elf.splt->output_offset
25f23106 14904 + ent->plt.offset);
e054468f
AM		 14905 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14906 rela.r_addend = ent->addend;
33e44f2e 14907 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14908 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14909 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14910 }
8387904d 14911 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14912
14913 if (!htab->opd_abi)
14914 {
14915 if (!h->def_regular)
14916 {
14917 /* Mark the symbol as undefined, rather than as
14918 defined in glink. Leave the value if there were
14919 any relocations where pointer equality matters
14920 (this is a clue for the dynamic linker, to make
14921 function pointer comparisons work between an
14922 application and shared library), otherwise set it
14923 to zero. */
14924 sym->st_shndx = SHN_UNDEF;
14925 if (!h->pointer_equality_needed)
14926 sym->st_value = 0;
14927 else if (!h->ref_regular_nonweak)
14928 {
14929 /* This breaks function pointer comparisons, but
14930 that is better than breaking tests for a NULL
14931 function pointer. */
14932 sym->st_value = 0;
14933 }
14934 }
14935 }
8387904d 14936 }
5bd4f169 14937
f5385ebf 14938 if (h->needs_copy)
5bd4f169 14939 {
65f38f15 14940 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 14941
65f38f15
AM		 14942 if (h->dynindx == -1
14943 || (h->root.type != bfd_link_hash_defined
14944 && h->root.type != bfd_link_hash_defweak)
4ce794b7 14945 || htab->relbss == NULL)
65f38f15 14946 abort ();
5bd4f169
AM		 14947
14948 rela.r_offset = (h->root.u.def.value
14949 + h->root.u.def.section->output_section->vma
14950 + h->root.u.def.section->output_offset);
14951 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14952 rela.r_addend = 0;
4ce794b7
AM		 14953 loc = htab->relbss->contents;
14954 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 14955 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 14956 }
14957
b34976b6 14958 return TRUE;
5bd4f169
AM		 14959}
14960
65f38f15
AM		 14961/* Used to decide how to sort relocs in an optimal manner for the
14962 dynamic linker, before writing them out. */
14963
14964static enum elf_reloc_type_class
7e612e98
AM		 14965ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14966 const asection *rel_sec,
14967 const Elf_Internal_Rela *rela)
65f38f15 14968{
04c9666a 14969 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 14970 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14971
33e44f2e 14972 if (rel_sec == htab->elf.irelplt)
7e612e98 14973 return reloc_class_ifunc;
a33d1f77 14974
4ce794b7 14975 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14976 switch (r_type)
65f38f15
AM		 14977 {
14978 case R_PPC64_RELATIVE:
14979 return reloc_class_relative;
14980 case R_PPC64_JMP_SLOT:
14981 return reloc_class_plt;
14982 case R_PPC64_COPY:
14983 return reloc_class_copy;
14984 default:
14985 return reloc_class_normal;
14986 }
14987}
14988
5bd4f169
AM		 14989/* Finish up the dynamic sections. */
14990
b34976b6 14991static bfd_boolean
4ce794b7
AM		 14992ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14993 struct bfd_link_info *info)
5bd4f169 14994{
65f38f15
AM		 14995 struct ppc_link_hash_table *htab;
14996 bfd *dynobj;
5bd4f169 14997 asection *sdyn;
5bd4f169 14998
65f38f15 14999 htab = ppc_hash_table (info);
4dfe6ac6
NC		 15000 if (htab == NULL)
15001 return FALSE;
15002
65f38f15 15003 dynobj = htab->elf.dynobj;
3d4d4302 15004 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 15005
65f38f15 15006 if (htab->elf.dynamic_sections_created)
5bd4f169 15007 {
5bd4f169
AM		 15008 Elf64_External_Dyn *dyncon, *dynconend;
15009
33e44f2e 15010 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 15011 abort ();
5bd4f169
AM		 15012
15013 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 15014 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 15015 for (; dyncon < dynconend; dyncon++)
15016 {
15017 Elf_Internal_Dyn dyn;
19397422 15018 asection *s;
5bd4f169
AM		 15019
15020 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15021
15022 switch (dyn.d_tag)
15023 {
65f38f15
AM		 15024 default:
15025 continue;
5bd4f169 15026
5d1634d7 15027 case DT_PPC64_GLINK:
4ce794b7 15028 s = htab->glink;
6348e046 15029 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15030 /* We stupidly defined DT_PPC64_GLINK to be the start
15031 of glink rather than the first entry point, which is
15032 what ld.so needs, and now have a bigger stub to
15033 support automatic multiple TOCs. */
b9e5796b 15034 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15035 break;
15036
19397422
AM		 15037 case DT_PPC64_OPD:
15038 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15039 if (s == NULL)
15040 continue;
15041 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15042 break;
15043
e8910a83
AM		 15044 case DT_PPC64_OPT:
15045 if (htab->do_multi_toc && htab->multi_toc_needed)
15046 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15047 break;
15048
19397422
AM		 15049 case DT_PPC64_OPDSZ:
15050 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15051 if (s == NULL)
15052 continue;
eea6121a 15053 dyn.d_un.d_val = s->size;
19397422
AM		 15054 break;
15055
65f38f15 15056 case DT_PLTGOT:
33e44f2e 15057 s = htab->elf.splt;
6348e046 15058 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15059 break;
15060
15061 case DT_JMPREL:
33e44f2e 15062 s = htab->elf.srelplt;
6348e046 15063 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15064 break;
5bd4f169 15065
65f38f15 15066 case DT_PLTRELSZ:
33e44f2e 15067 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15068 break;
15069
15070 case DT_RELASZ:
15071 /* Don't count procedure linkage table relocs in the
15072 overall reloc count. */
33e44f2e 15073 s = htab->elf.srelplt;
6348e046
AM		 15074 if (s == NULL)
15075 continue;
eea6121a 15076 dyn.d_un.d_val -= s->size;
6348e046
AM		 15077 break;
15078
15079 case DT_RELA:
15080 /* We may not be using the standard ELF linker script.
15081 If .rela.plt is the first .rela section, we adjust
15082 DT_RELA to not include it. */
33e44f2e 15083 s = htab->elf.srelplt;
6348e046
AM		 15084 if (s == NULL)
15085 continue;
15086 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15087 continue;
eea6121a 15088 dyn.d_un.d_ptr += s->size;
65f38f15 15089 break;
5bd4f169 15090 }
5bd4f169 15091
65f38f15 15092 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15093 }
5bd4f169
AM		 15094 }
15095
33e44f2e 15096 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15097 {
15098 /* Fill in the first entry in the global offset table.
15099 We use it to hold the link-time TOCbase. */
15100 bfd_put_64 (output_bfd,
60ee0d4a 15101 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15102 htab->elf.sgot->contents);
5d1634d7
AM		 15103
15104 /* Set .got entry size. */
33e44f2e 15105 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15106 }
15107
33e44f2e 15108 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15109 {
15110 /* Set .plt entry size. */
33e44f2e 15111 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15112 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15113 }
15114
84f5d08e
AM		 15115 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15116 brlt ourselves if emitrelocations. */
15117 if (htab->brlt != NULL
15118 && htab->brlt->reloc_count != 0
15119 && !_bfd_elf_link_output_relocs (output_bfd,
15120 htab->brlt,
d4730f92 15121 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15122 elf_section_data (htab->brlt)->relocs,
15123 NULL))
15124 return FALSE;
15125
176a0d42
AM		 15126 if (htab->glink != NULL
15127 && htab->glink->reloc_count != 0
15128 && !_bfd_elf_link_output_relocs (output_bfd,
15129 htab->glink,
d4730f92 15130 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15131 elf_section_data (htab->glink)->relocs,
15132 NULL))
15133 return FALSE;
15134
58d180e8 15135 if (htab->glink_eh_frame != NULL
da44f4e5
AM		 15136 && htab->glink_eh_frame->size != 0)
15137 {
15138 bfd_vma val;
15139 bfd_byte *p;
15140 asection *stub_sec;
15141
15142 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15143 for (stub_sec = htab->params->stub_bfd->sections;
15144 stub_sec != NULL;
15145 stub_sec = stub_sec->next)
15146 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15147 {
15148 /* FDE length. */
15149 p += 4;
15150 /* CIE pointer. */
15151 p += 4;
15152 /* Offset to stub section. */
15153 val = (stub_sec->output_section->vma
15154 + stub_sec->output_offset);
15155 val -= (htab->glink_eh_frame->output_section->vma
15156 + htab->glink_eh_frame->output_offset
15157 + (p - htab->glink_eh_frame->contents));
15158 if (val + 0x80000000 > 0xffffffff)
15159 {
15160 info->callbacks->einfo
15161 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15162 stub_sec->name);
15163 return FALSE;
15164 }
15165 bfd_put_32 (dynobj, val, p);
15166 p += 4;
15167 /* stub section size. */
15168 p += 4;
15169 /* Augmentation. */
15170 p += 1;
15171 /* Pad. */
15172 p += 7;
15173 }
15174 if (htab->glink != NULL && htab->glink->size != 0)
15175 {
15176 /* FDE length. */
15177 p += 4;
15178 /* CIE pointer. */
15179 p += 4;
15180 /* Offset to .glink. */
15181 val = (htab->glink->output_section->vma
15182 + htab->glink->output_offset
15183 + 8);
15184 val -= (htab->glink_eh_frame->output_section->vma
15185 + htab->glink_eh_frame->output_offset
15186 + (p - htab->glink_eh_frame->contents));
15187 if (val + 0x80000000 > 0xffffffff)
15188 {
15189 info->callbacks->einfo
15190 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15191 htab->glink->name);
15192 return FALSE;
15193 }
15194 bfd_put_32 (dynobj, val, p);
15195 p += 4;
15196 /* .glink size. */
15197 p += 4;
15198 /* Augmentation. */
15199 p += 1;
15200 /* Ops. */
15201 p += 7;
15202 }
15203
15204 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15205 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15206 htab->glink_eh_frame,
15207 htab->glink_eh_frame->contents))
15208 return FALSE;
15209 }
58d180e8 15210
e717da7e 15211 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15212 since we didn't add them to DYNOBJ. We know dynobj is the first
15213 bfd. */
c72f2fb2 15214 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15215 {
15216 asection *s;
7b53ace3 15217
0c8d6e5c 15218 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15219 continue;
15220
e717da7e
AM		 15221 s = ppc64_elf_tdata (dynobj)->got;
15222 if (s != NULL
eea6121a 15223 && s->size != 0
e717da7e
AM		 15224 && s->output_section != bfd_abs_section_ptr
15225 && !bfd_set_section_contents (output_bfd, s->output_section,
15226 s->contents, s->output_offset,
eea6121a 15227 s->size))
e717da7e
AM		 15228 return FALSE;
15229 s = ppc64_elf_tdata (dynobj)->relgot;
15230 if (s != NULL
eea6121a 15231 && s->size != 0
e717da7e
AM		 15232 && s->output_section != bfd_abs_section_ptr
15233 && !bfd_set_section_contents (output_bfd, s->output_section,
15234 s->contents, s->output_offset,
eea6121a 15235 s->size))
e717da7e
AM		 15236 return FALSE;
15237 }
f6c52c13 15238
b34976b6 15239 return TRUE;
5bd4f169
AM		 15240}
15241
5bd4f169 15242#include "elf64-target.h"
7b8e7dad
AM		 15243
15244/* FreeBSD support */
15245
15246#undef TARGET_LITTLE_SYM
15247#undef TARGET_LITTLE_NAME
15248
15249#undef TARGET_BIG_SYM
6d00b590 15250#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15251#undef TARGET_BIG_NAME
15252#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15253
15254#undef ELF_OSABI
15255#define ELF_OSABI ELFOSABI_FREEBSD
15256
15257#undef elf64_bed
15258#define elf64_bed elf64_powerpc_fbsd_bed
15259
15260#include "elf64-target.h"
15261
GDB Binutils - Deliverables
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