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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
4b95cf5c 2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
32ca9640 5 Largely rewritten by Alan Modra.
5bd4f169 6
ae9a127f 7 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 8
ae9a127f
NC		 9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
ae9a127f 12 (at your option) any later version.
5bd4f169 13
ae9a127f
NC		 14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
5bd4f169 18
4ce794b7
AM		 19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 22
cd123cb7 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
5bd4f169 30#include "bfd.h"
5bd4f169
AM		 31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
04c9666a 34#include "elf/ppc64.h"
5d1634d7 35#include "elf64-ppc.h"
58d180e8 36#include "dwarf2.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016 56static bfd_vma opd_entry_value
aef36ac1 57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
5bd4f169 58
6d00b590 59#define TARGET_LITTLE_SYM powerpc_elf64_le_vec
ad8e1ba5 60#define TARGET_LITTLE_NAME "elf64-powerpcle"
6d00b590 61#define TARGET_BIG_SYM powerpc_elf64_vec
ad8e1ba5
AM		 62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 64#define ELF_TARGET_ID PPC64_ELF_DATA
ad8e1ba5
AM		 65#define ELF_MACHINE_CODE EM_PPC64
66#define ELF_MAXPAGESIZE 0x10000
24718e3b 67#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM		 68#define elf_info_to_howto ppc64_elf_info_to_howto
69
70#define elf_backend_want_got_sym 0
71#define elf_backend_want_plt_sym 0
72#define elf_backend_plt_alignment 3
73#define elf_backend_plt_not_loaded 1
ad8e1ba5 74#define elf_backend_got_header_size 8
ad8e1ba5
AM		 75#define elf_backend_can_gc_sections 1
76#define elf_backend_can_refcount 1
77#define elf_backend_rela_normal 1
6bfdb61b 78#define elf_backend_default_execstack 0
ad8e1ba5 79
e717da7e 80#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 81#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
aa374f67 82#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ee67d69a
AM		 83#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84#define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
ad8e1ba5
AM		 85#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
90e3cdf2 87#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
aa374f67 88#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
ad8e1ba5
AM		 89
90#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 91#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 93#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 94#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 96#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
f6c7c3e8 97#define elf_backend_check_directives ppc64_elf_before_check_relocs
e5034e59 98#define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
8387904d 99#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 100#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 101#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 102#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 103#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106#define elf_backend_hide_symbol ppc64_elf_hide_symbol
9f296da3 107#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
ad8e1ba5
AM		 108#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
a345bc8d 110#define elf_backend_hash_symbol ppc64_elf_hash_symbol
74541ad4 111#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 112#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 113#define elf_backend_relocate_section ppc64_elf_relocate_section
114#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 117#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 118#define elf_backend_special_sections ppc64_elf_special_sections
6911b7dc 119#define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
ad8e1ba5 120
5bd4f169
AM		 121/* The name of the dynamic interpreter. This is put in the .interp
122 section. */
123#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
124
125/* The size in bytes of an entry in the procedure linkage table. */
b9e5796b 126#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
5bd4f169
AM		 127
128/* The initial size of the plt reserved for the dynamic linker. */
b9e5796b 129#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
5bd4f169 130
a078d95a
AM		 131/* Offsets to some stack save slots. */
132#define STK_LR 16
133#define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
eb8d7fda 134/* This one is dodgy. ELFv2 does not have a linker word, so use the
a078d95a
AM		 135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137#define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
138
5bd4f169 139/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 140#define TOC_BASE_OFF 0x8000
141
142/* Offset of tp and dtp pointers from start of TLS block. */
143#define TP_OFFSET 0x7000
144#define DTP_OFFSET 0x8000
5bd4f169 145
ad8e1ba5
AM		 146/* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
71a39c98 148 insert an addi to adjust r11. */
a078d95a 149#define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
71a39c98
AM		 150#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152#define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153#define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154#define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
5d1634d7
AM		 155#define BCTR 0x4e800420 /* bctr */
156
71a39c98 157#define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
ad8e1ba5
AM		 158#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
160
71a39c98
AM		 161#define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162#define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163#define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
794e51c0
AM		 164#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166#define BNECTR 0x4ca20420 /* bnectr+ */
167#define BNECTR_P4 0x4ce20420 /* bnectr+ */
168
71a39c98 169#define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
ac2df442
AM		 170#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
172
a078d95a 173#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
ad8e1ba5 174
397998fc 175#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
a345bc8d
AM		 176#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
178
ee4bf8d2 179/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 180#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 181 /* 0: */
182 /* .quad plt0-1f */
183 /* __glink: */
184#define MFLR_R12 0x7d8802a6 /* mflr %12 */
185#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
186 /* 1: */
187#define MFLR_R11 0x7d6802a6 /* mflr %11 */
71a39c98 188 /* ld %2,(0b-1b)(%11) */
ee4bf8d2 189#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
71a39c98
AM		 190#define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
191 /* ld %12,0(%11) */
192 /* ld %2,8(%11) */
193 /* mtctr %12 */
194 /* ld %11,16(%11) */
ee4bf8d2 195 /* bctr */
b9e5796b
AM		 196#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
5d1634d7
AM		 201
202/* Pad with this. */
203#define NOP 0x60000000
204
721956f4
AM		 205/* Some other nops. */
206#define CROR_151515 0x4def7b82
207#define CROR_313131 0x4ffffb82
208
cedb70c5 209/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 210#define LI_R0_0 0x38000000 /* li %r0,0 */
211#define B_DOT 0x48000000 /* b . */
212
213/* After that, we need two instructions to load the index, followed by
214 a branch. */
215#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 216#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 217
deb0e272
AM		 218/* Instructions used by the save and restore reg functions. */
219#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 223#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 225#define LI_R12_0 0x39800000 /* li %r12,0 */
226#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 229#define BLR 0x4e800020 /* blr */
230
41bd81ab
AM		 231/* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 234 relocate .opd without reloc entries. */
41bd81ab
AM		 235#ifndef NO_OPD_RELOCS
236#define NO_OPD_RELOCS 0
237#endif
810d4e75
AM		 238
239static inline int
240abiversion (bfd *abfd)
241{
242 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
243}
244
245static inline void
246set_abiversion (bfd *abfd, int ver)
247{
248 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
249 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
250}
5bd4f169 251\f
f5e87a1d 252#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 253
5bd4f169 254/* Relocation HOWTO's. */
04c9666a 255static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 256
257static reloc_howto_type ppc64_elf_howto_raw[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE, /* type */
260 0, /* rightshift */
411e1bfb
AM		 261 2, /* size (0 = byte, 1 = short, 2 = long) */
262 32, /* bitsize */
b34976b6 263 FALSE, /* pc_relative */
5bd4f169 264 0, /* bitpos */
f5e87a1d 265 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 266 bfd_elf_generic_reloc, /* special_function */
267 "R_PPC64_NONE", /* name */
b34976b6 268 FALSE, /* partial_inplace */
d006db6c 269 0, /* src_mask */
5bd4f169 270 0, /* dst_mask */
b34976b6 271 FALSE), /* pcrel_offset */
5bd4f169
AM		 272
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32, /* type */
275 0, /* rightshift */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
277 32, /* bitsize */
b34976b6 278 FALSE, /* pc_relative */
5bd4f169
AM		 279 0, /* bitpos */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_ADDR32", /* name */
b34976b6 283 FALSE, /* partial_inplace */
5bd4f169
AM		 284 0, /* src_mask */
285 0xffffffff, /* dst_mask */
b34976b6 286 FALSE), /* pcrel_offset */
5bd4f169
AM		 287
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 26, /* bitsize */
b34976b6 294 FALSE, /* pc_relative */
5bd4f169
AM		 295 0, /* bitpos */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_ADDR24", /* name */
b34976b6 299 FALSE, /* partial_inplace */
d006db6c 300 0, /* src_mask */
f5e87a1d 301 0x03fffffc, /* dst_mask */
b34976b6 302 FALSE), /* pcrel_offset */
5bd4f169
AM		 303
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16, /* type */
306 0, /* rightshift */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
b34976b6 309 FALSE, /* pc_relative */
5bd4f169
AM		 310 0, /* bitpos */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR16", /* name */
b34976b6 314 FALSE, /* partial_inplace */
5bd4f169
AM		 315 0, /* src_mask */
316 0xffff, /* dst_mask */
b34976b6 317 FALSE), /* pcrel_offset */
5bd4f169
AM		 318
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO, /* type */
321 0, /* rightshift */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
b34976b6 324 FALSE, /* pc_relative */
5bd4f169
AM		 325 0, /* bitpos */
326 complain_overflow_dont,/* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
b34976b6 329 FALSE, /* partial_inplace */
5bd4f169
AM		 330 0, /* src_mask */
331 0xffff, /* dst_mask */
b34976b6 332 FALSE), /* pcrel_offset */
5bd4f169
AM		 333
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI, /* type */
336 16, /* rightshift */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
b34976b6 339 FALSE, /* pc_relative */
5bd4f169 340 0, /* bitpos */
f9c6b907 341 complain_overflow_signed, /* complain_on_overflow */
5bd4f169
AM		 342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
b34976b6 344 FALSE, /* partial_inplace */
5bd4f169
AM		 345 0, /* src_mask */
346 0xffff, /* dst_mask */
b34976b6 347 FALSE), /* pcrel_offset */
5bd4f169
AM		 348
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA, /* type */
352 16, /* rightshift */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
354 16, /* bitsize */
b34976b6 355 FALSE, /* pc_relative */
5bd4f169 356 0, /* bitpos */
f9c6b907 357 complain_overflow_signed, /* complain_on_overflow */
805fc799 358 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 359 "R_PPC64_ADDR16_HA", /* name */
b34976b6 360 FALSE, /* partial_inplace */
5bd4f169
AM		 361 0, /* src_mask */
362 0xffff, /* dst_mask */
b34976b6 363 FALSE), /* pcrel_offset */
5bd4f169
AM		 364
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 16, /* bitsize */
b34976b6 371 FALSE, /* pc_relative */
5bd4f169 372 0, /* bitpos */
b80eed39 373 complain_overflow_signed, /* complain_on_overflow */
2441e016 374 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 375 "R_PPC64_ADDR14", /* name */
b34976b6 376 FALSE, /* partial_inplace */
d006db6c 377 0, /* src_mask */
f5e87a1d 378 0x0000fffc, /* dst_mask */
b34976b6 379 FALSE), /* pcrel_offset */
5bd4f169
AM		 380
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
b34976b6 388 FALSE, /* pc_relative */
5bd4f169 389 0, /* bitpos */
b80eed39 390 complain_overflow_signed, /* complain_on_overflow */
805fc799 391 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 392 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 393 FALSE, /* partial_inplace */
d006db6c 394 0, /* src_mask */
f5e87a1d 395 0x0000fffc, /* dst_mask */
b34976b6 396 FALSE), /* pcrel_offset */
5bd4f169
AM		 397
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
b34976b6 405 FALSE, /* pc_relative */
5bd4f169 406 0, /* bitpos */
b80eed39 407 complain_overflow_signed, /* complain_on_overflow */
805fc799 408 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 410 FALSE, /* partial_inplace */
d006db6c 411 0, /* src_mask */
f5e87a1d 412 0x0000fffc, /* dst_mask */
b34976b6 413 FALSE), /* pcrel_offset */
5bd4f169
AM		 414
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24, /* type */
417 0, /* rightshift */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
419 26, /* bitsize */
b34976b6 420 TRUE, /* pc_relative */
5bd4f169
AM		 421 0, /* bitpos */
422 complain_overflow_signed, /* complain_on_overflow */
2441e016 423 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 424 "R_PPC64_REL24", /* name */
b34976b6 425 FALSE, /* partial_inplace */
d006db6c 426 0, /* src_mask */
f5e87a1d 427 0x03fffffc, /* dst_mask */
b34976b6 428 TRUE), /* pcrel_offset */
5bd4f169
AM		 429
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14, /* type */
432 0, /* rightshift */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
b34976b6 435 TRUE, /* pc_relative */
5bd4f169
AM		 436 0, /* bitpos */
437 complain_overflow_signed, /* complain_on_overflow */
2441e016 438 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 439 "R_PPC64_REL14", /* name */
b34976b6 440 FALSE, /* partial_inplace */
d006db6c 441 0, /* src_mask */
f5e87a1d 442 0x0000fffc, /* dst_mask */
b34976b6 443 TRUE), /* pcrel_offset */
5bd4f169
AM		 444
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
447 zero. */
448 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
449 0, /* rightshift */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
451 16, /* bitsize */
b34976b6 452 TRUE, /* pc_relative */
5bd4f169
AM		 453 0, /* bitpos */
454 complain_overflow_signed, /* complain_on_overflow */
805fc799 455 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 456 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 457 FALSE, /* partial_inplace */
d006db6c 458 0, /* src_mask */
f5e87a1d 459 0x0000fffc, /* dst_mask */
b34976b6 460 TRUE), /* pcrel_offset */
5bd4f169
AM		 461
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
464 be zero. */
465 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
466 0, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
468 16, /* bitsize */
b34976b6 469 TRUE, /* pc_relative */
5bd4f169
AM		 470 0, /* bitpos */
471 complain_overflow_signed, /* complain_on_overflow */
805fc799 472 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 473 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 474 FALSE, /* partial_inplace */
d006db6c 475 0, /* src_mask */
f5e87a1d 476 0x0000fffc, /* dst_mask */
b34976b6 477 TRUE), /* pcrel_offset */
5bd4f169
AM		 478
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
480 symbol. */
481 HOWTO (R_PPC64_GOT16, /* type */
482 0, /* rightshift */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
484 16, /* bitsize */
b34976b6 485 FALSE, /* pc_relative */
5bd4f169
AM		 486 0, /* bitpos */
487 complain_overflow_signed, /* complain_on_overflow */
805fc799 488 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 489 "R_PPC64_GOT16", /* name */
b34976b6 490 FALSE, /* partial_inplace */
5bd4f169
AM		 491 0, /* src_mask */
492 0xffff, /* dst_mask */
b34976b6 493 FALSE), /* pcrel_offset */
5bd4f169
AM		 494
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
496 the symbol. */
497 HOWTO (R_PPC64_GOT16_LO, /* type */
498 0, /* rightshift */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
500 16, /* bitsize */
b34976b6 501 FALSE, /* pc_relative */
5bd4f169
AM		 502 0, /* bitpos */
503 complain_overflow_dont, /* complain_on_overflow */
805fc799 504 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 505 "R_PPC64_GOT16_LO", /* name */
b34976b6 506 FALSE, /* partial_inplace */
5bd4f169
AM		 507 0, /* src_mask */
508 0xffff, /* dst_mask */
b34976b6 509 FALSE), /* pcrel_offset */
5bd4f169
AM		 510
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
512 the symbol. */
513 HOWTO (R_PPC64_GOT16_HI, /* type */
514 16, /* rightshift */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
516 16, /* bitsize */
b34976b6 517 FALSE, /* pc_relative */
5bd4f169 518 0, /* bitpos */
f9c6b907 519 complain_overflow_signed,/* complain_on_overflow */
805fc799 520 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 521 "R_PPC64_GOT16_HI", /* name */
b34976b6 522 FALSE, /* partial_inplace */
5bd4f169
AM		 523 0, /* src_mask */
524 0xffff, /* dst_mask */
b34976b6 525 FALSE), /* pcrel_offset */
5bd4f169
AM		 526
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
528 the symbol. */
529 HOWTO (R_PPC64_GOT16_HA, /* type */
530 16, /* rightshift */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
532 16, /* bitsize */
b34976b6 533 FALSE, /* pc_relative */
5bd4f169 534 0, /* bitpos */
f9c6b907 535 complain_overflow_signed,/* complain_on_overflow */
805fc799 536 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 537 "R_PPC64_GOT16_HA", /* name */
b34976b6 538 FALSE, /* partial_inplace */
5bd4f169
AM		 539 0, /* src_mask */
540 0xffff, /* dst_mask */
b34976b6 541 FALSE), /* pcrel_offset */
5bd4f169
AM		 542
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY, /* type */
549 0, /* rightshift */
f5e87a1d
AM		 550 0, /* this one is variable size */
551 0, /* bitsize */
b34976b6 552 FALSE, /* pc_relative */
5bd4f169 553 0, /* bitpos */
f5e87a1d
AM		 554 complain_overflow_dont, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 556 "R_PPC64_COPY", /* name */
b34976b6 557 FALSE, /* partial_inplace */
5bd4f169
AM		 558 0, /* src_mask */
559 0, /* dst_mask */
b34976b6 560 FALSE), /* pcrel_offset */
5bd4f169
AM		 561
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
563 entries. */
564 HOWTO (R_PPC64_GLOB_DAT, /* type */
565 0, /* rightshift */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
567 64, /* bitsize */
b34976b6 568 FALSE, /* pc_relative */
5bd4f169
AM		 569 0, /* bitpos */
570 complain_overflow_dont, /* complain_on_overflow */
805fc799 571 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 572 "R_PPC64_GLOB_DAT", /* name */
b34976b6 573 FALSE, /* partial_inplace */
5bd4f169 574 0, /* src_mask */
f5e87a1d 575 ONES (64), /* dst_mask */
b34976b6 576 FALSE), /* pcrel_offset */
5bd4f169
AM		 577
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT, /* type */
581 0, /* rightshift */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
583 0, /* bitsize */
b34976b6 584 FALSE, /* pc_relative */
5bd4f169
AM		 585 0, /* bitpos */
586 complain_overflow_dont, /* complain_on_overflow */
805fc799 587 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 588 "R_PPC64_JMP_SLOT", /* name */
b34976b6 589 FALSE, /* partial_inplace */
5bd4f169
AM		 590 0, /* src_mask */
591 0, /* dst_mask */
b34976b6 592 FALSE), /* pcrel_offset */
5bd4f169
AM		 593
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
596 addend. */
597 HOWTO (R_PPC64_RELATIVE, /* type */
598 0, /* rightshift */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
600 64, /* bitsize */
b34976b6 601 FALSE, /* pc_relative */
5bd4f169
AM		 602 0, /* bitpos */
603 complain_overflow_dont, /* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
b34976b6 606 FALSE, /* partial_inplace */
5bd4f169 607 0, /* src_mask */
f5e87a1d 608 ONES (64), /* dst_mask */
b34976b6 609 FALSE), /* pcrel_offset */
5bd4f169
AM		 610
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32, /* type */
613 0, /* rightshift */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
615 32, /* bitsize */
b34976b6 616 FALSE, /* pc_relative */
5bd4f169
AM		 617 0, /* bitpos */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_UADDR32", /* name */
b34976b6 621 FALSE, /* partial_inplace */
5bd4f169
AM		 622 0, /* src_mask */
623 0xffffffff, /* dst_mask */
b34976b6 624 FALSE), /* pcrel_offset */
5bd4f169
AM		 625
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16, /* type */
628 0, /* rightshift */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
630 16, /* bitsize */
b34976b6 631 FALSE, /* pc_relative */
5bd4f169
AM		 632 0, /* bitpos */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR16", /* name */
b34976b6 636 FALSE, /* partial_inplace */
5bd4f169
AM		 637 0, /* src_mask */
638 0xffff, /* dst_mask */
b34976b6 639 FALSE), /* pcrel_offset */
5bd4f169
AM		 640
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32, /* type */
643 0, /* rightshift */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
645 32, /* bitsize */
b34976b6 646 TRUE, /* pc_relative */
5bd4f169 647 0, /* bitpos */
5bd4f169
AM		 648 complain_overflow_signed, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_REL32", /* name */
b34976b6 651 FALSE, /* partial_inplace */
5bd4f169
AM		 652 0, /* src_mask */
653 0xffffffff, /* dst_mask */
b34976b6 654 TRUE), /* pcrel_offset */
5bd4f169 655
10ed1bba 656 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 657 HOWTO (R_PPC64_PLT32, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
b34976b6 661 FALSE, /* pc_relative */
5bd4f169
AM		 662 0, /* bitpos */
663 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 664 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 665 "R_PPC64_PLT32", /* name */
b34976b6 666 FALSE, /* partial_inplace */
5bd4f169 667 0, /* src_mask */
f5e87a1d 668 0xffffffff, /* dst_mask */
b34976b6 669 FALSE), /* pcrel_offset */
5bd4f169
AM		 670
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32, /* type */
674 0, /* rightshift */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
676 32, /* bitsize */
b34976b6 677 TRUE, /* pc_relative */
5bd4f169
AM		 678 0, /* bitpos */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
b34976b6 682 FALSE, /* partial_inplace */
5bd4f169 683 0, /* src_mask */
f5e87a1d 684 0xffffffff, /* dst_mask */
b34976b6 685 TRUE), /* pcrel_offset */
5bd4f169
AM		 686
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
688 the symbol. */
689 HOWTO (R_PPC64_PLT16_LO, /* type */
690 0, /* rightshift */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
b34976b6 693 FALSE, /* pc_relative */
5bd4f169
AM		 694 0, /* bitpos */
695 complain_overflow_dont, /* complain_on_overflow */
805fc799 696 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 697 "R_PPC64_PLT16_LO", /* name */
b34976b6 698 FALSE, /* partial_inplace */
5bd4f169
AM		 699 0, /* src_mask */
700 0xffff, /* dst_mask */
b34976b6 701 FALSE), /* pcrel_offset */
5bd4f169
AM		 702
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
704 the symbol. */
705 HOWTO (R_PPC64_PLT16_HI, /* type */
706 16, /* rightshift */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
708 16, /* bitsize */
b34976b6 709 FALSE, /* pc_relative */
5bd4f169 710 0, /* bitpos */
f9c6b907 711 complain_overflow_signed, /* complain_on_overflow */
805fc799 712 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 713 "R_PPC64_PLT16_HI", /* name */
b34976b6 714 FALSE, /* partial_inplace */
5bd4f169
AM		 715 0, /* src_mask */
716 0xffff, /* dst_mask */
b34976b6 717 FALSE), /* pcrel_offset */
5bd4f169
AM		 718
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
720 the symbol. */
721 HOWTO (R_PPC64_PLT16_HA, /* type */
722 16, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
b34976b6 725 FALSE, /* pc_relative */
5bd4f169 726 0, /* bitpos */
f9c6b907 727 complain_overflow_signed, /* complain_on_overflow */
805fc799 728 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 729 "R_PPC64_PLT16_HA", /* name */
b34976b6 730 FALSE, /* partial_inplace */
5bd4f169
AM		 731 0, /* src_mask */
732 0xffff, /* dst_mask */
b34976b6 733 FALSE), /* pcrel_offset */
5bd4f169 734
c061c2d8 735 /* 16-bit section relative relocation. */
5bd4f169
AM		 736 HOWTO (R_PPC64_SECTOFF, /* type */
737 0, /* rightshift */
c061c2d8
AM		 738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
b34976b6 740 FALSE, /* pc_relative */
5bd4f169 741 0, /* bitpos */
b80eed39 742 complain_overflow_signed, /* complain_on_overflow */
805fc799 743 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 744 "R_PPC64_SECTOFF", /* name */
b34976b6 745 FALSE, /* partial_inplace */
5bd4f169 746 0, /* src_mask */
c061c2d8 747 0xffff, /* dst_mask */
b34976b6 748 FALSE), /* pcrel_offset */
5bd4f169 749
c061c2d8 750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 751 HOWTO (R_PPC64_SECTOFF_LO, /* type */
752 0, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
b34976b6 755 FALSE, /* pc_relative */
5bd4f169
AM		 756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
805fc799 758 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 759 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 760 FALSE, /* partial_inplace */
5bd4f169
AM		 761 0, /* src_mask */
762 0xffff, /* dst_mask */
b34976b6 763 FALSE), /* pcrel_offset */
5bd4f169
AM		 764
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI, /* type */
767 16, /* rightshift */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
b34976b6 770 FALSE, /* pc_relative */
5bd4f169 771 0, /* bitpos */
f9c6b907 772 complain_overflow_signed, /* complain_on_overflow */
805fc799 773 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 774 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 775 FALSE, /* partial_inplace */
5bd4f169
AM		 776 0, /* src_mask */
777 0xffff, /* dst_mask */
b34976b6 778 FALSE), /* pcrel_offset */
5bd4f169
AM		 779
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA, /* type */
782 16, /* rightshift */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
784 16, /* bitsize */
b34976b6 785 FALSE, /* pc_relative */
5bd4f169 786 0, /* bitpos */
f9c6b907 787 complain_overflow_signed, /* complain_on_overflow */
805fc799 788 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 789 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 790 FALSE, /* partial_inplace */
5bd4f169
AM		 791 0, /* src_mask */
792 0xffff, /* dst_mask */
b34976b6 793 FALSE), /* pcrel_offset */
5bd4f169 794
04c9666a
AM		 795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 797 2, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 30, /* bitsize */
b34976b6 800 TRUE, /* pc_relative */
5bd4f169
AM		 801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
04c9666a 804 "R_PPC64_REL30", /* name */
b34976b6 805 FALSE, /* partial_inplace */
d006db6c 806 0, /* src_mask */
5bd4f169 807 0xfffffffc, /* dst_mask */
b34976b6 808 TRUE), /* pcrel_offset */
5bd4f169
AM		 809
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
811
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64, /* type */
814 0, /* rightshift */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
816 64, /* bitsize */
b34976b6 817 FALSE, /* pc_relative */
5bd4f169
AM		 818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR64", /* name */
b34976b6 822 FALSE, /* partial_inplace */
5bd4f169 823 0, /* src_mask */
f5e87a1d 824 ONES (64), /* dst_mask */
b34976b6 825 FALSE), /* pcrel_offset */
5bd4f169
AM		 826
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
829 32, /* rightshift */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
831 16, /* bitsize */
b34976b6 832 FALSE, /* pc_relative */
5bd4f169
AM		 833 0, /* bitpos */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 837 FALSE, /* partial_inplace */
5bd4f169
AM		 838 0, /* src_mask */
839 0xffff, /* dst_mask */
b34976b6 840 FALSE), /* pcrel_offset */
5bd4f169
AM		 841
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
845 32, /* rightshift */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
b34976b6 848 FALSE, /* pc_relative */
5bd4f169
AM		 849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
805fc799 851 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 852 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 853 FALSE, /* partial_inplace */
5bd4f169
AM		 854 0, /* src_mask */
855 0xffff, /* dst_mask */
b34976b6 856 FALSE), /* pcrel_offset */
5bd4f169
AM		 857
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
860 48, /* rightshift */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
862 16, /* bitsize */
b34976b6 863 FALSE, /* pc_relative */
5bd4f169
AM		 864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 868 FALSE, /* partial_inplace */
5bd4f169
AM		 869 0, /* src_mask */
870 0xffff, /* dst_mask */
b34976b6 871 FALSE), /* pcrel_offset */
5bd4f169
AM		 872
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
876 48, /* rightshift */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
878 16, /* bitsize */
b34976b6 879 FALSE, /* pc_relative */
5bd4f169
AM		 880 0, /* bitpos */
881 complain_overflow_dont, /* complain_on_overflow */
805fc799 882 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 883 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 884 FALSE, /* partial_inplace */
5bd4f169
AM		 885 0, /* src_mask */
886 0xffff, /* dst_mask */
b34976b6 887 FALSE), /* pcrel_offset */
5bd4f169
AM		 888
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64, /* type */
891 0, /* rightshift */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
893 64, /* bitsize */
b34976b6 894 FALSE, /* pc_relative */
5bd4f169
AM		 895 0, /* bitpos */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC64_UADDR64", /* name */
b34976b6 899 FALSE, /* partial_inplace */
5bd4f169 900 0, /* src_mask */
f5e87a1d 901 ONES (64), /* dst_mask */
b34976b6 902 FALSE), /* pcrel_offset */
5bd4f169
AM		 903
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64, /* type */
906 0, /* rightshift */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 64, /* bitsize */
b34976b6 909 TRUE, /* pc_relative */
5bd4f169
AM		 910 0, /* bitpos */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_REL64", /* name */
b34976b6 914 FALSE, /* partial_inplace */
5bd4f169 915 0, /* src_mask */
f5e87a1d 916 ONES (64), /* dst_mask */
b34976b6 917 TRUE), /* pcrel_offset */
5bd4f169 918
cedb70c5 919 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 920 HOWTO (R_PPC64_PLT64, /* type */
921 0, /* rightshift */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
923 64, /* bitsize */
b34976b6 924 FALSE, /* pc_relative */
5bd4f169
AM		 925 0, /* bitpos */
926 complain_overflow_dont, /* complain_on_overflow */
805fc799 927 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 928 "R_PPC64_PLT64", /* name */
b34976b6 929 FALSE, /* partial_inplace */
5bd4f169 930 0, /* src_mask */
f5e87a1d 931 ONES (64), /* dst_mask */
b34976b6 932 FALSE), /* pcrel_offset */
5bd4f169
AM		 933
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
935 table. */
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64, /* type */
938 0, /* rightshift */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
940 64, /* bitsize */
b34976b6 941 TRUE, /* pc_relative */
5bd4f169
AM		 942 0, /* bitpos */
943 complain_overflow_dont, /* complain_on_overflow */
805fc799 944 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 945 "R_PPC64_PLTREL64", /* name */
b34976b6 946 FALSE, /* partial_inplace */
5bd4f169 947 0, /* src_mask */
f5e87a1d 948 ONES (64), /* dst_mask */
b34976b6 949 TRUE), /* pcrel_offset */
5bd4f169
AM		 950
951 /* 16 bit TOC-relative relocation. */
952
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16, /* type */
955 0, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
b34976b6 958 FALSE, /* pc_relative */
5bd4f169
AM		 959 0, /* bitpos */
960 complain_overflow_signed, /* complain_on_overflow */
805fc799 961 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 962 "R_PPC64_TOC16", /* name */
b34976b6 963 FALSE, /* partial_inplace */
5bd4f169
AM		 964 0, /* src_mask */
965 0xffff, /* dst_mask */
b34976b6 966 FALSE), /* pcrel_offset */
5bd4f169
AM		 967
968 /* 16 bit TOC-relative relocation without overflow. */
969
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO, /* type */
972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
5bd4f169
AM		 976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
805fc799 978 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 979 "R_PPC64_TOC16_LO", /* name */
b34976b6 980 FALSE, /* partial_inplace */
5bd4f169
AM		 981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
5bd4f169
AM		 984
985 /* 16 bit TOC-relative relocation, high 16 bits. */
986
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI, /* type */
989 16, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
b34976b6 992 FALSE, /* pc_relative */
5bd4f169 993 0, /* bitpos */
f9c6b907 994 complain_overflow_signed, /* complain_on_overflow */
805fc799 995 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 996 "R_PPC64_TOC16_HI", /* name */
b34976b6 997 FALSE, /* partial_inplace */
5bd4f169
AM		 998 0, /* src_mask */
999 0xffff, /* dst_mask */
b34976b6 1000 FALSE), /* pcrel_offset */
5bd4f169
AM		 1001
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1004 negative. */
1005
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 16, /* bitsize */
b34976b6 1011 FALSE, /* pc_relative */
5bd4f169 1012 0, /* bitpos */
f9c6b907 1013 complain_overflow_signed, /* complain_on_overflow */
805fc799 1014 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 1015 "R_PPC64_TOC16_HA", /* name */
b34976b6 1016 FALSE, /* partial_inplace */
5bd4f169
AM		 1017 0, /* src_mask */
1018 0xffff, /* dst_mask */
b34976b6 1019 FALSE), /* pcrel_offset */
5bd4f169
AM		 1020
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1022
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC, /* type */
1025 0, /* rightshift */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1027 64, /* bitsize */
b34976b6 1028 FALSE, /* pc_relative */
5bd4f169 1029 0, /* bitpos */
b80eed39 1030 complain_overflow_dont, /* complain_on_overflow */
805fc799 1031 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 1032 "R_PPC64_TOC", /* name */
b34976b6 1033 FALSE, /* partial_inplace */
5bd4f169 1034 0, /* src_mask */
f5e87a1d 1035 ONES (64), /* dst_mask */
b34976b6 1036 FALSE), /* pcrel_offset */
5bd4f169
AM		 1037
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16, /* type */
1048 0, /* rightshift */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1050 16, /* bitsize */
b34976b6 1051 FALSE, /* pc_relative */
5bd4f169
AM		 1052 0, /* bitpos */
1053 complain_overflow_signed, /* complain_on_overflow */
805fc799 1054 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE, /* partial_inplace */
1057 0, /* src_mask */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1060
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1064 0, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
1067 FALSE, /* pc_relative */
1068 0, /* bitpos */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE, /* partial_inplace */
1073 0, /* src_mask */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1076
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
f9c6b907 1085 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1086 ppc64_elf_unhandled_reloc, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1095 is negative. */
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 16, /* bitsize */
1101 FALSE, /* pc_relative */
1102 0, /* bitpos */
f9c6b907 1103 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE, /* partial_inplace */
1107 0, /* src_mask */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1110
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS, /* type */
1113 0, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
b80eed39 1118 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE, /* partial_inplace */
1122 0, /* src_mask */
1123 0xfffc, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1125
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1128 0, /* rightshift */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE, /* partial_inplace */
1137 0, /* src_mask */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS, /* type */
1143 0, /* rightshift */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 16, /* bitsize */
1146 FALSE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE, /* partial_inplace */
1152 0, /* src_mask */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1155
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1158 0, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE, /* partial_inplace */
1167 0, /* src_mask */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
b80eed39 1193 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1194 ppc64_elf_sectoff_reloc, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1203 0, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS, /* type */
1218 0, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_signed, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1233 0, /* rightshift */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1235 16, /* bitsize */
1236 FALSE, /* pc_relative */
1237 0, /* bitpos */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE, /* partial_inplace */
1242 0, /* src_mask */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1245
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1248 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 FALSE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xfffc, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xfffc, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
727fc41e 1278 /* Marker relocs for TLS. */
411e1bfb
AM		 1279 HOWTO (R_PPC64_TLS,
1280 0, /* rightshift */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1282 32, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
727fc41e
AM		 1293 HOWTO (R_PPC64_TLSGD,
1294 0, /* rightshift */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1296 32, /* bitsize */
1297 FALSE, /* pc_relative */
1298 0, /* bitpos */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE, /* partial_inplace */
1303 0, /* src_mask */
1304 0, /* dst_mask */
1305 FALSE), /* pcrel_offset */
1306
1307 HOWTO (R_PPC64_TLSLD,
1308 0, /* rightshift */
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1310 32, /* bitsize */
1311 FALSE, /* pc_relative */
1312 0, /* bitpos */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE, /* partial_inplace */
1317 0, /* src_mask */
1318 0, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1320
3b421ab3
AM		 1321 HOWTO (R_PPC64_TOCSAVE,
1322 0, /* rightshift */
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1324 32, /* bitsize */
1325 FALSE, /* pc_relative */
1326 0, /* bitpos */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE, /* partial_inplace */
1331 0, /* src_mask */
1332 0, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1334
411e1bfb
AM		 1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64,
1338 0, /* rightshift */
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1340 64, /* bitsize */
1341 FALSE, /* pc_relative */
1342 0, /* bitpos */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE, /* partial_inplace */
1347 0, /* src_mask */
1348 ONES (64), /* dst_mask */
1349 FALSE), /* pcrel_offset */
1350
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64,
1355 0, /* rightshift */
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1357 64, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE, /* partial_inplace */
1364 0, /* src_mask */
1365 ONES (64), /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16,
1370 0, /* rightshift */
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1372 16, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO,
1385 0, /* rightshift */
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 16, /* bitsize */
1388 FALSE, /* pc_relative */
1389 0, /* bitpos */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE, /* partial_inplace */
1394 0, /* src_mask */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1397
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 16, /* bitsize */
1403 FALSE, /* pc_relative */
1404 0, /* bitpos */
f9c6b907 1405 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE, /* partial_inplace */
1409 0, /* src_mask */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1412
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 16, /* bitsize */
1418 FALSE, /* pc_relative */
1419 0, /* bitpos */
f9c6b907 1420 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE, /* partial_inplace */
1424 0, /* src_mask */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1427
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 16, /* bitsize */
1433 FALSE, /* pc_relative */
1434 0, /* bitpos */
1435 complain_overflow_dont, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE, /* partial_inplace */
1439 0, /* src_mask */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1442
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 16, /* bitsize */
1448 FALSE, /* pc_relative */
1449 0, /* bitpos */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE, /* partial_inplace */
1454 0, /* src_mask */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1457
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 16, /* bitsize */
1463 FALSE, /* pc_relative */
1464 0, /* bitpos */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE, /* partial_inplace */
1469 0, /* src_mask */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1472
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 16, /* bitsize */
1478 FALSE, /* pc_relative */
1479 0, /* bitpos */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE, /* partial_inplace */
1484 0, /* src_mask */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1487
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS,
1490 0, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 16, /* bitsize */
1493 FALSE, /* pc_relative */
1494 0, /* bitpos */
1495 complain_overflow_signed, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE, /* partial_inplace */
1499 0, /* src_mask */
1500 0xfffc, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1502
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS,
1505 0, /* rightshift */
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 16, /* bitsize */
1508 FALSE, /* pc_relative */
1509 0, /* bitpos */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE, /* partial_inplace */
1514 0, /* src_mask */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1517
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64,
1521 0, /* rightshift */
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1523 64, /* bitsize */
1524 FALSE, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE, /* partial_inplace */
1530 0, /* src_mask */
1531 ONES (64), /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16,
1536 0, /* rightshift */
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1538 16, /* bitsize */
1539 FALSE, /* pc_relative */
1540 0, /* bitpos */
1541 complain_overflow_signed, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE, /* partial_inplace */
1545 0, /* src_mask */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1548
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO,
1551 0, /* rightshift */
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1553 16, /* bitsize */
1554 FALSE, /* pc_relative */
1555 0, /* bitpos */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE, /* partial_inplace */
1560 0, /* src_mask */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1563
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1568 16, /* bitsize */
1569 FALSE, /* pc_relative */
1570 0, /* bitpos */
f9c6b907 1571 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE, /* partial_inplace */
1575 0, /* src_mask */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1578
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1583 16, /* bitsize */
1584 FALSE, /* pc_relative */
1585 0, /* bitpos */
f9c6b907 1586 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE, /* partial_inplace */
1590 0, /* src_mask */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1593
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 16, /* bitsize */
1599 FALSE, /* pc_relative */
1600 0, /* bitpos */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE, /* partial_inplace */
1605 0, /* src_mask */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1608
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1613 16, /* bitsize */
1614 FALSE, /* pc_relative */
1615 0, /* bitpos */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE, /* partial_inplace */
1620 0, /* src_mask */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1623
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1628 16, /* bitsize */
1629 FALSE, /* pc_relative */
1630 0, /* bitpos */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE, /* partial_inplace */
1635 0, /* src_mask */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1638
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 16, /* bitsize */
1644 FALSE, /* pc_relative */
1645 0, /* bitpos */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE, /* partial_inplace */
1650 0, /* src_mask */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1653
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS,
1656 0, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 16, /* bitsize */
1659 FALSE, /* pc_relative */
1660 0, /* bitpos */
1661 complain_overflow_signed, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE, /* partial_inplace */
1665 0, /* src_mask */
1666 0xfffc, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1668
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS,
1671 0, /* rightshift */
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 16, /* bitsize */
1674 FALSE, /* pc_relative */
1675 0, /* bitpos */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE, /* partial_inplace */
1680 0, /* src_mask */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1683
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16,
1688 0, /* rightshift */
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1690 16, /* bitsize */
1691 FALSE, /* pc_relative */
1692 0, /* bitpos */
1693 complain_overflow_signed, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1696 FALSE, /* partial_inplace */
5bd4f169
AM		 1697 0, /* src_mask */
1698 0xffff, /* dst_mask */
b34976b6 1699 FALSE), /* pcrel_offset */
5bd4f169 1700
411e1bfb
AM		 1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1703 0, /* rightshift */
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 16, /* bitsize */
b34976b6 1706 FALSE, /* pc_relative */
5bd4f169
AM		 1707 0, /* bitpos */
1708 complain_overflow_dont, /* complain_on_overflow */
805fc799 1709 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1711 FALSE, /* partial_inplace */
5bd4f169
AM		 1712 0, /* src_mask */
1713 0xffff, /* dst_mask */
b34976b6 1714 FALSE), /* pcrel_offset */
5bd4f169 1715
411e1bfb
AM		 1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 16, /* bitsize */
b34976b6 1721 FALSE, /* pc_relative */
5bd4f169 1722 0, /* bitpos */
f9c6b907 1723 complain_overflow_signed, /* complain_on_overflow */
805fc799 1724 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1726 FALSE, /* partial_inplace */
5bd4f169
AM		 1727 0, /* src_mask */
1728 0xffff, /* dst_mask */
b34976b6 1729 FALSE), /* pcrel_offset */
5bd4f169 1730
411e1bfb
AM		 1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 16, /* bitsize */
b34976b6 1736 FALSE, /* pc_relative */
5bd4f169 1737 0, /* bitpos */
f9c6b907 1738 complain_overflow_signed, /* complain_on_overflow */
805fc799 1739 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1741 FALSE, /* partial_inplace */
5bd4f169
AM		 1742 0, /* src_mask */
1743 0xffff, /* dst_mask */
b34976b6 1744 FALSE), /* pcrel_offset */
5bd4f169 1745
411e1bfb
AM		 1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1750 0, /* rightshift */
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1752 16, /* bitsize */
b34976b6 1753 FALSE, /* pc_relative */
5bd4f169 1754 0, /* bitpos */
411e1bfb
AM		 1755 complain_overflow_signed, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1758 FALSE, /* partial_inplace */
d006db6c 1759 0, /* src_mask */
411e1bfb 1760 0xffff, /* dst_mask */
b34976b6 1761 FALSE), /* pcrel_offset */
5bd4f169 1762
411e1bfb
AM		 1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1765 0, /* rightshift */
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1767 16, /* bitsize */
b34976b6 1768 FALSE, /* pc_relative */
5bd4f169 1769 0, /* bitpos */
411e1bfb
AM		 1770 complain_overflow_dont, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1773 FALSE, /* partial_inplace */
d006db6c 1774 0, /* src_mask */
411e1bfb 1775 0xffff, /* dst_mask */
b34976b6 1776 FALSE), /* pcrel_offset */
5bd4f169 1777
411e1bfb
AM		 1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1780 16, /* rightshift */
5bd4f169
AM		 1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
b34976b6 1783 FALSE, /* pc_relative */
5bd4f169 1784 0, /* bitpos */
f9c6b907 1785 complain_overflow_signed, /* complain_on_overflow */
805fc799 1786 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1788 FALSE, /* partial_inplace */
d006db6c 1789 0, /* src_mask */
411e1bfb 1790 0xffff, /* dst_mask */
b34976b6 1791 FALSE), /* pcrel_offset */
5bd4f169 1792
411e1bfb
AM		 1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1795 16, /* rightshift */
5bd4f169
AM		 1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1797 16, /* bitsize */
b34976b6 1798 FALSE, /* pc_relative */
5bd4f169 1799 0, /* bitpos */
f9c6b907 1800 complain_overflow_signed, /* complain_on_overflow */
805fc799 1801 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1803 FALSE, /* partial_inplace */
d006db6c 1804 0, /* src_mask */
411e1bfb 1805 0xffff, /* dst_mask */
b34976b6 1806 FALSE), /* pcrel_offset */
5bd4f169 1807
411e1bfb
AM		 1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1811 0, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 16, /* bitsize */
b34976b6 1814 FALSE, /* pc_relative */
5bd4f169 1815 0, /* bitpos */
411e1bfb 1816 complain_overflow_signed, /* complain_on_overflow */
805fc799 1817 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1819 FALSE, /* partial_inplace */
d006db6c 1820 0, /* src_mask */
5bd4f169 1821 0xfffc, /* dst_mask */
b34976b6 1822 FALSE), /* pcrel_offset */
5bd4f169 1823
411e1bfb
AM		 1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1826 0, /* rightshift */
c061c2d8
AM		 1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1828 16, /* bitsize */
b34976b6 1829 FALSE, /* pc_relative */
5bd4f169 1830 0, /* bitpos */
411e1bfb
AM		 1831 complain_overflow_dont, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1834 FALSE, /* partial_inplace */
d006db6c 1835 0, /* src_mask */
c061c2d8 1836 0xfffc, /* dst_mask */
b34976b6 1837 FALSE), /* pcrel_offset */
5bd4f169 1838
411e1bfb
AM		 1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1841 16, /* rightshift */
5bd4f169
AM		 1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1843 16, /* bitsize */
b34976b6 1844 FALSE, /* pc_relative */
5bd4f169 1845 0, /* bitpos */
f9c6b907 1846 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1849 FALSE, /* partial_inplace */
d006db6c 1850 0, /* src_mask */
411e1bfb 1851 0xffff, /* dst_mask */
b34976b6 1852 FALSE), /* pcrel_offset */
5bd4f169 1853
411e1bfb
AM		 1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1858 16, /* bitsize */
1859 FALSE, /* pc_relative */
1860 0, /* bitpos */
f9c6b907 1861 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE, /* partial_inplace */
1865 0, /* src_mask */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1868
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1872 0, /* rightshift */
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 16, /* bitsize */
b34976b6 1875 FALSE, /* pc_relative */
5bd4f169
AM		 1876 0, /* bitpos */
1877 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1878 ppc64_elf_unhandled_reloc, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1880 FALSE, /* partial_inplace */
d006db6c 1881 0, /* src_mask */
ad8e1ba5 1882 0xfffc, /* dst_mask */
b34976b6 1883 FALSE), /* pcrel_offset */
5bd4f169 1884
411e1bfb
AM		 1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1887 0, /* rightshift */
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1889 16, /* bitsize */
b34976b6 1890 FALSE, /* pc_relative */
5bd4f169
AM		 1891 0, /* bitpos */
1892 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1895 FALSE, /* partial_inplace */
d006db6c 1896 0, /* src_mask */
ad8e1ba5 1897 0xfffc, /* dst_mask */
b34976b6 1898 FALSE), /* pcrel_offset */
5bd4f169 1899
411e1bfb
AM		 1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI,
1902 16, /* rightshift */
5bd4f169
AM		 1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1904 16, /* bitsize */
b34976b6 1905 FALSE, /* pc_relative */
5bd4f169 1906 0, /* bitpos */
f9c6b907 1907 complain_overflow_signed, /* complain_on_overflow */
805fc799 1908 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1909 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1910 FALSE, /* partial_inplace */
d006db6c 1911 0, /* src_mask */
411e1bfb 1912 0xffff, /* dst_mask */
b34976b6 1913 FALSE), /* pcrel_offset */
5bd4f169 1914
411e1bfb
AM		 1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA,
1917 16, /* rightshift */
5bd4f169
AM		 1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1919 16, /* bitsize */
b34976b6 1920 FALSE, /* pc_relative */
5bd4f169 1921 0, /* bitpos */
f9c6b907 1922 complain_overflow_signed, /* complain_on_overflow */
805fc799 1923 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1924 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1925 FALSE, /* partial_inplace */
d006db6c 1926 0, /* src_mask */
411e1bfb 1927 0xffff, /* dst_mask */
b34976b6 1928 FALSE), /* pcrel_offset */
5bd4f169 1929
25f23106
AM		 1930 HOWTO (R_PPC64_JMP_IREL, /* type */
1931 0, /* rightshift */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1933 0, /* bitsize */
1934 FALSE, /* pc_relative */
1935 0, /* bitpos */
1936 complain_overflow_dont, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE, /* partial_inplace */
1940 0, /* src_mask */
1941 0, /* dst_mask */
1942 FALSE), /* pcrel_offset */
1943
e054468f
AM		 1944 HOWTO (R_PPC64_IRELATIVE, /* type */
1945 0, /* rightshift */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1947 64, /* bitsize */
1948 FALSE, /* pc_relative */
1949 0, /* bitpos */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 bfd_elf_generic_reloc, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE, /* partial_inplace */
1954 0, /* src_mask */
1955 ONES (64), /* dst_mask */
1956 FALSE), /* pcrel_offset */
1957
25f23106
AM		 1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16, /* type */
1960 0, /* rightshift */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1962 16, /* bitsize */
1963 TRUE, /* pc_relative */
1964 0, /* bitpos */
b80eed39 1965 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE, /* partial_inplace */
1969 0, /* src_mask */
1970 0xffff, /* dst_mask */
1971 TRUE), /* pcrel_offset */
1972
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO, /* type */
1975 0, /* rightshift */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1977 16, /* bitsize */
1978 TRUE, /* pc_relative */
1979 0, /* bitpos */
1980 complain_overflow_dont,/* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE, /* partial_inplace */
1984 0, /* src_mask */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1987
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1992 16, /* bitsize */
1993 TRUE, /* pc_relative */
1994 0, /* bitpos */
f9c6b907 1995 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE, /* partial_inplace */
1999 0, /* src_mask */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2002
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 16, /* bitsize */
2009 TRUE, /* pc_relative */
2010 0, /* bitpos */
f9c6b907 2011 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 2012 ppc64_elf_ha_reloc, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE, /* partial_inplace */
2015 0, /* src_mask */
2016 0xffff, /* dst_mask */
2017 TRUE), /* pcrel_offset */
2018
f9c6b907
AM		 2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2023 16, /* bitsize */
2024 FALSE, /* pc_relative */
2025 0, /* bitpos */
2026 complain_overflow_dont, /* complain_on_overflow */
2027 bfd_elf_generic_reloc, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE, /* partial_inplace */
2030 0, /* src_mask */
2031 0xffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2033
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2038 16, /* bitsize */
2039 FALSE, /* pc_relative */
2040 0, /* bitpos */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE, /* partial_inplace */
2045 0, /* src_mask */
2046 0xffff, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2048
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2053 16, /* bitsize */
2054 FALSE, /* pc_relative */
2055 0, /* bitpos */
2056 complain_overflow_dont, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE, /* partial_inplace */
2060 0, /* src_mask */
2061 0xffff, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2063
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2068 16, /* bitsize */
2069 FALSE, /* pc_relative */
2070 0, /* bitpos */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE, /* partial_inplace */
2075 0, /* src_mask */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2078
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2083 16, /* bitsize */
2084 FALSE, /* pc_relative */
2085 0, /* bitpos */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE, /* partial_inplace */
2090 0, /* src_mask */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2093
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2098 16, /* bitsize */
2099 FALSE, /* pc_relative */
2100 0, /* bitpos */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE, /* partial_inplace */
2105 0, /* src_mask */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2108
45965137
AM		 2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2111 0, /* rightshift */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2113 64, /* bitsize */
2114 FALSE, /* pc_relative */
2115 0, /* bitpos */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 bfd_elf_generic_reloc, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE, /* partial_inplace */
2120 0, /* src_mask */
2121 ONES (64), /* dst_mask */
2122 FALSE), /* pcrel_offset */
2123
5bd4f169
AM		 2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2126 0, /* rightshift */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2128 0, /* bitsize */
b34976b6 2129 FALSE, /* pc_relative */
5bd4f169
AM		 2130 0, /* bitpos */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 NULL, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 2134 FALSE, /* partial_inplace */
5bd4f169
AM		 2135 0, /* src_mask */
2136 0, /* dst_mask */
b34976b6 2137 FALSE), /* pcrel_offset */
5bd4f169
AM		 2138
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2141 0, /* rightshift */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2143 0, /* bitsize */
b34976b6 2144 FALSE, /* pc_relative */
5bd4f169
AM		 2145 0, /* bitpos */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 NULL, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 2149 FALSE, /* partial_inplace */
5bd4f169
AM		 2150 0, /* src_mask */
2151 0, /* dst_mask */
b34976b6 2152 FALSE), /* pcrel_offset */
5bd4f169
AM		 2153};
2154
2155\f
2156/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2157 be done. */
2158
2159static void
4ce794b7 2160ppc_howto_init (void)
5bd4f169
AM		 2161{
2162 unsigned int i, type;
2163
2164 for (i = 0;
2165 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2166 i++)
2167 {
2168 type = ppc64_elf_howto_raw[i].type;
2169 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2170 / sizeof (ppc64_elf_howto_table[0])));
2171 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2172 }
2173}
2174
2175static reloc_howto_type *
4ce794b7
AM		 2176ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2177 bfd_reloc_code_real_type code)
5bd4f169 2178{
411e1bfb 2179 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 2180
2181 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2182 /* Initialize howto table if needed. */
2183 ppc_howto_init ();
2184
4ce794b7 2185 switch (code)
5bd4f169
AM		 2186 {
2187 default:
4ce794b7 2188 return NULL;
5bd4f169 2189
411e1bfb
AM		 2190 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2191 break;
2192 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2193 break;
2194 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2195 break;
2196 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2197 break;
2198 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2199 break;
2200 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2201 break;
f9c6b907
AM		 2202 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2203 break;
411e1bfb 2204 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2205 break;
f9c6b907
AM		 2206 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2207 break;
411e1bfb 2208 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2209 break;
411e1bfb 2210 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2211 break;
411e1bfb 2212 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2213 break;
411e1bfb 2214 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2215 break;
411e1bfb 2216 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2217 break;
411e1bfb 2218 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2219 break;
411e1bfb 2220 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2221 break;
411e1bfb 2222 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2223 break;
411e1bfb 2224 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2225 break;
411e1bfb 2226 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2227 break;
411e1bfb 2228 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2229 break;
411e1bfb 2230 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2231 break;
411e1bfb 2232 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2233 break;
411e1bfb 2234 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2235 break;
411e1bfb 2236 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2237 break;
411e1bfb 2238 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2239 break;
411e1bfb 2240 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2241 break;
411e1bfb 2242 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2243 break;
411e1bfb 2244 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2245 break;
411e1bfb 2246 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2247 break;
411e1bfb 2248 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2249 break;
411e1bfb 2250 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2251 break;
411e1bfb 2252 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2253 break;
411e1bfb 2254 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2255 break;
411e1bfb 2256 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2257 break;
411e1bfb 2258 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2259 break;
411e1bfb 2260 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2261 break;
411e1bfb 2262 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2263 break;
411e1bfb 2264 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2265 break;
411e1bfb 2266 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2267 break;
411e1bfb 2268 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2269 break;
411e1bfb 2270 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2271 break;
411e1bfb 2272 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2273 break;
411e1bfb 2274 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2275 break;
411e1bfb 2276 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2277 break;
411e1bfb 2278 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2279 break;
411e1bfb 2280 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2281 break;
411e1bfb 2282 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2283 break;
411e1bfb 2284 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2285 break;
411e1bfb 2286 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2287 break;
411e1bfb 2288 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2289 break;
411e1bfb 2290 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2291 break;
411e1bfb 2292 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2293 break;
411e1bfb 2294 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2295 break;
411e1bfb 2296 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2297 break;
411e1bfb 2298 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2299 break;
411e1bfb 2300 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2301 break;
411e1bfb 2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2303 break;
411e1bfb 2304 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2305 break;
411e1bfb 2306 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2307 break;
411e1bfb 2308 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2309 break;
411e1bfb 2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2311 break;
411e1bfb 2312 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2313 break;
727fc41e
AM		 2314 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2315 break;
2316 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2317 break;
411e1bfb 2318 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2319 break;
411e1bfb 2320 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2321 break;
411e1bfb 2322 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2323 break;
411e1bfb 2324 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2325 break;
f9c6b907
AM		 2326 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2327 break;
411e1bfb 2328 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2329 break;
f9c6b907
AM		 2330 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2331 break;
411e1bfb 2332 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2333 break;
411e1bfb
AM		 2334 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2335 break;
2336 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2337 break;
2338 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2339 break;
f9c6b907
AM		 2340 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2341 break;
411e1bfb
AM		 2342 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2343 break;
f9c6b907
AM		 2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2345 break;
411e1bfb
AM		 2346 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2347 break;
2348 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2349 break;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2351 break;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2353 break;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2355 break;
2356 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2357 break;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2359 break;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2361 break;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2363 break;
2364 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2365 break;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2367 break;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2369 break;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2371 break;
2372 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2373 break;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2375 break;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2377 break;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2379 break;
2380 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2381 break;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2383 break;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2385 break;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2387 break;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2389 break;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2391 break;
2392 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2393 break;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2395 break;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2397 break;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2399 break;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2401 break;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2403 break;
25f23106
AM		 2404 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2405 break;
2406 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2407 break;
2408 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2409 break;
2410 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2411 break;
45965137
AM		 2412 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2413 break;
411e1bfb
AM		 2414 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2415 break;
2416 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2417 break;
2418 }
2419
4ce794b7 2420 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2421};
2422
157090f7
AM		 2423static reloc_howto_type *
2424ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2425 const char *r_name)
2426{
2427 unsigned int i;
2428
2429 for (i = 0;
2430 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2431 i++)
2432 if (ppc64_elf_howto_raw[i].name != NULL
2433 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2434 return &ppc64_elf_howto_raw[i];
2435
2436 return NULL;
2437}
2438
5bd4f169
AM		 2439/* Set the howto pointer for a PowerPC ELF reloc. */
2440
2441static void
4ce794b7
AM		 2442ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2443 Elf_Internal_Rela *dst)
5bd4f169 2444{
65f38f15
AM		 2445 unsigned int type;
2446
ef60b7ff 2447 /* Initialize howto table if needed. */
5bd4f169 2448 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2449 ppc_howto_init ();
2450
65f38f15 2451 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2452 if (type >= (sizeof (ppc64_elf_howto_table)
2453 / sizeof (ppc64_elf_howto_table[0])))
2454 {
2455 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2456 abfd, (int) type);
2457 type = R_PPC64_NONE;
d0fb9a8d 2458 }
65f38f15 2459 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2460}
2461
04c9666a 2462/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2463
2464static bfd_reloc_status_type
4ce794b7
AM		 2465ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2466 void *data, asection *input_section,
2467 bfd *output_bfd, char **error_message)
5bd4f169 2468{
805fc799
AM		 2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2471 link time. */
2472 if (output_bfd != NULL)
cedb70c5 2473 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2474 input_section, output_bfd, error_message);
2475
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2478 doesn't matter. */
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2481}
5bd4f169 2482
2441e016
AM		 2483static bfd_reloc_status_type
2484ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2487{
2488 if (output_bfd != NULL)
2489 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2490 input_section, output_bfd, error_message);
2491
699733f6
AM		 2492 if (strcmp (symbol->section->name, ".opd") == 0
2493 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2494 {
2495 bfd_vma dest = opd_entry_value (symbol->section,
2496 symbol->value + reloc_entry->addend,
aef36ac1 2497 NULL, NULL, FALSE);
2441e016
AM		 2498 if (dest != (bfd_vma) -1)
2499 reloc_entry->addend = dest - (symbol->value
2500 + symbol->section->output_section->vma
2501 + symbol->section->output_offset);
2502 }
810d4e75
AM		 2503 else
2504 {
2505 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2506
2507 if (symbol->section->owner != abfd
2508 && abiversion (symbol->section->owner) >= 2)
2509 {
2510 unsigned int i;
2511
2512 for (i = 0; i < symbol->section->owner->symcount; ++i)
2513 {
2514 asymbol *symdef = symbol->section->owner->outsymbols[i];
2515
2516 if (strcmp (symdef->name, symbol->name) == 0)
2517 {
2518 elfsym = (elf_symbol_type *) symdef;
2519 break;
2520 }
2521 }
2522 }
2523 reloc_entry->addend
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2525 }
2441e016
AM		 2526 return bfd_reloc_continue;
2527}
2528
805fc799 2529static bfd_reloc_status_type
4ce794b7
AM		 2530ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2531 void *data, asection *input_section,
2532 bfd *output_bfd, char **error_message)
805fc799
AM		 2533{
2534 long insn;
04c9666a 2535 enum elf_ppc64_reloc_type r_type;
805fc799 2536 bfd_size_type octets;
794e51c0
AM		 2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2 = TRUE;
805fc799
AM		 2539
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2542 link time. */
5bd4f169 2543 if (output_bfd != NULL)
cedb70c5 2544 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2545 input_section, output_bfd, error_message);
2546
2547 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2548 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2549 insn &= ~(0x01 << 21);
4ce794b7 2550 r_type = reloc_entry->howto->type;
805fc799
AM		 2551 if (r_type == R_PPC64_ADDR14_BRTAKEN
2552 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2553 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799 2554
794e51c0 2555 if (is_isa_v2)
5bd4f169 2556 {
805fc799
AM		 2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn & (0x14 << 21)) == (0x04 << 21))
2561 insn |= 0x02 << 21;
2562 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2563 insn |= 0x08 << 21;
2564 else
2441e016 2565 goto out;
5bd4f169 2566 }
805fc799
AM		 2567 else
2568 {
2569 bfd_vma target = 0;
2570 bfd_vma from;
5bd4f169 2571
805fc799
AM		 2572 if (!bfd_is_com_section (symbol->section))
2573 target = symbol->value;
2574 target += symbol->section->output_section->vma;
2575 target += symbol->section->output_offset;
2576 target += reloc_entry->addend;
5bd4f169 2577
805fc799
AM		 2578 from = (reloc_entry->address
2579 + input_section->output_offset
2580 + input_section->output_section->vma);
5bd4f169 2581
805fc799
AM		 2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma) (target - from) < 0)
2584 insn ^= 0x01 << 21;
2585 }
4ce794b7 2586 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2587 out:
2588 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
805fc799 2590}
5bd4f169 2591
805fc799 2592static bfd_reloc_status_type
4ce794b7
AM		 2593ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2594 void *data, asection *input_section,
2595 bfd *output_bfd, char **error_message)
805fc799
AM		 2596{
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2599 link time. */
2600 if (output_bfd != NULL)
cedb70c5 2601 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2602 input_section, output_bfd, error_message);
5bd4f169 2603
805fc799
AM		 2604 /* Subtract the symbol section base address. */
2605 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2606 return bfd_reloc_continue;
2607}
2608
805fc799 2609static bfd_reloc_status_type
4ce794b7
AM		 2610ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2611 void *data, asection *input_section,
2612 bfd *output_bfd, char **error_message)
805fc799
AM		 2613{
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2616 link time. */
2617 if (output_bfd != NULL)
cedb70c5 2618 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2619 input_section, output_bfd, error_message);
2620
2621 /* Subtract the symbol section base address. */
2622 reloc_entry->addend -= symbol->section->output_section->vma;
2623
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry->addend += 0x8000;
2626 return bfd_reloc_continue;
2627}
2628
2629static bfd_reloc_status_type
4ce794b7
AM		 2630ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2631 void *data, asection *input_section,
2632 bfd *output_bfd, char **error_message)
805fc799
AM		 2633{
2634 bfd_vma TOCstart;
2635
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2638 link time. */
2639 if (output_bfd != NULL)
cedb70c5 2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2641 input_section, output_bfd, error_message);
2642
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2644 if (TOCstart == 0)
1c865ab2 2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2646
2647 /* Subtract the TOC base address. */
2648 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2649 return bfd_reloc_continue;
2650}
2651
2652static bfd_reloc_status_type
4ce794b7
AM		 2653ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
805fc799
AM		 2656{
2657 bfd_vma TOCstart;
2658
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2661 link time. */
2662 if (output_bfd != NULL)
cedb70c5 2663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2664 input_section, output_bfd, error_message);
2665
2666 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2667 if (TOCstart == 0)
1c865ab2 2668 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2669
2670 /* Subtract the TOC base address. */
2671 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2672
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry->addend += 0x8000;
2675 return bfd_reloc_continue;
2676}
2677
2678static bfd_reloc_status_type
4ce794b7
AM		 2679ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2680 void *data, asection *input_section,
2681 bfd *output_bfd, char **error_message)
805fc799
AM		 2682{
2683 bfd_vma TOCstart;
2684 bfd_size_type octets;
2685
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2688 link time. */
2689 if (output_bfd != NULL)
cedb70c5 2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2691 input_section, output_bfd, error_message);
2692
2693 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2694 if (TOCstart == 0)
1c865ab2 2695 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2696
2697 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2698 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2699 return bfd_reloc_ok;
2700}
2701
2702static bfd_reloc_status_type
4ce794b7
AM		 2703ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2704 void *data, asection *input_section,
2705 bfd *output_bfd, char **error_message)
805fc799
AM		 2706{
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2709 link time. */
2710 if (output_bfd != NULL)
cedb70c5 2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2712 input_section, output_bfd, error_message);
2713
2714 if (error_message != NULL)
2715 {
2716 static char buf[60];
2717 sprintf (buf, "generic linker can't handle %s",
2718 reloc_entry->howto->name);
2719 *error_message = buf;
2720 }
2721 return bfd_reloc_dangerous;
2722}
2723
927be08e
AM		 2724/* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2726struct got_entry
2727{
2728 struct got_entry *next;
2729
2730 /* The symbol addend that we'll be placing in the GOT. */
2731 bfd_vma addend;
2732
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2738
2739 Point to the BFD owning this GOT entry. */
2740 bfd *owner;
2741
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2744 unsigned char tls_type;
927be08e
AM		 2745
2746 /* Non-zero if got.ent points to real entry. */
f961d9dd 2747 unsigned char is_indirect;
927be08e
AM		 2748
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2750 union
2751 {
2752 bfd_signed_vma refcount;
2753 bfd_vma offset;
2754 struct got_entry *ent;
2755 } got;
2756};
2757
2758/* The same for PLT. */
2759struct plt_entry
2760{
2761 struct plt_entry *next;
2762
2763 bfd_vma addend;
2764
2765 union
2766 {
2767 bfd_signed_vma refcount;
2768 bfd_vma offset;
2769 } plt;
2770};
2771
e717da7e
AM		 2772struct ppc64_elf_obj_tdata
2773{
2774 struct elf_obj_tdata elf;
2775
2776 /* Shortcuts to dynamic linker sections. */
2777 asection *got;
2778 asection *relgot;
2779
b3fac117
AM		 2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection *deleted_section;
81688140 2783
927be08e 2784 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2785 sections means we potentially need one of these for each input bfd. */
927be08e 2786 struct got_entry tlsld_got;
8860955f 2787
729eabd5
AM		 2788 union {
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela *relocs;
2791
2792 /* Section contents. */
2793 bfd_byte *contents;
2794 } opd;
d77c8a4b
AM		 2795
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
98528052
AM		 2798 unsigned int has_small_toc_reloc : 1;
2799
560c8763
AM		 2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn : 1;
e717da7e
AM		 2803};
2804
2805#define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2807
2808#define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2810
0c8d6e5c
AM		 2811#define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2814
e717da7e
AM		 2815/* Override the generic function because we store some extras. */
2816
2817static bfd_boolean
2818ppc64_elf_mkobject (bfd *abfd)
2819{
0ffa91dd 2820 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2821 PPC64_ELF_DATA);
e717da7e
AM		 2822}
2823
feee612b
AM		 2824/* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2826
b34976b6 2827static bfd_boolean
4ce794b7 2828ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2829{
2830 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2831 {
2832 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2833
2834 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2835 {
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd->arch_info = abfd->arch_info->next;
2838 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2839 }
2840 }
b34976b6 2841 return TRUE;
feee612b
AM		 2842}
2843
d37c89e5
AM		 2844/* Support for core dump NOTE sections. */
2845
2846static bfd_boolean
2847ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2848{
eea6121a 2849 size_t offset, size;
d37c89e5
AM		 2850
2851 if (note->descsz != 504)
2852 return FALSE;
2853
2854 /* pr_cursig */
228e534f 2855 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
d37c89e5
AM		 2856
2857 /* pr_pid */
228e534f 2858 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM		 2859
2860 /* pr_reg */
2861 offset = 112;
eea6121a 2862 size = 384;
d37c89e5
AM		 2863
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2866 size, note->descpos + offset);
d37c89e5
AM		 2867}
2868
2869static bfd_boolean
2870ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2871{
2872 if (note->descsz != 136)
2873 return FALSE;
2874
228e534f 2875 elf_tdata (abfd)->core->pid
bc989cdc 2876 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 2877 elf_tdata (abfd)->core->program
d37c89e5 2878 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 2879 elf_tdata (abfd)->core->command
d37c89e5
AM		 2880 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2881
2882 return TRUE;
2883}
2884
183e98be
AM		 2885static char *
2886ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2887 ...)
2888{
2889 switch (note_type)
2890 {
2891 default:
2892 return NULL;
2893
2894 case NT_PRPSINFO:
2895 {
2896 char data[136];
2897 va_list ap;
2898
2899 va_start (ap, note_type);
75cd47ed 2900 memset (data, 0, sizeof (data));
183e98be
AM		 2901 strncpy (data + 40, va_arg (ap, const char *), 16);
2902 strncpy (data + 56, va_arg (ap, const char *), 80);
2903 va_end (ap);
2904 return elfcore_write_note (abfd, buf, bufsiz,
2905 "CORE", note_type, data, sizeof (data));
2906 }
2907
2908 case NT_PRSTATUS:
2909 {
2910 char data[504];
2911 va_list ap;
2912 long pid;
2913 int cursig;
2914 const void *greg;
2915
2916 va_start (ap, note_type);
2917 memset (data, 0, 112);
2918 pid = va_arg (ap, long);
2919 bfd_put_32 (abfd, pid, data + 32);
2920 cursig = va_arg (ap, int);
2921 bfd_put_16 (abfd, cursig, data + 12);
2922 greg = va_arg (ap, const void *);
2923 memcpy (data + 112, greg, 384);
2924 memset (data + 496, 0, 8);
2925 va_end (ap);
2926 return elfcore_write_note (abfd, buf, bufsiz,
2927 "CORE", note_type, data, sizeof (data));
2928 }
2929 }
2930}
2931
5d35169e
AM		 2932/* Add extra PPC sections. */
2933
b35d266b 2934static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2935{
0112cd26
NC		 2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2942 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2943};
2944
7c8fe5c4
AM		 2945enum _ppc64_sec_type {
2946 sec_normal = 0,
2947 sec_opd = 1,
2948 sec_toc = 2
2949};
2950
f0abc2a1
AM		 2951struct _ppc64_elf_section_data
2952{
2953 struct bfd_elf_section_data elf;
411e1bfb 2954
f0abc2a1
AM		 2955 union
2956 {
74f0fb50
AM		 2957 /* An array with one entry for each opd function descriptor. */
2958 struct _opd_sec_data
2959 {
2960 /* Points to the function code section for local opd entries. */
2961 asection **func_sec;
2962
2963 /* After editing .opd, adjust references to opd local syms. */
2964 long *adjust;
2965 } opd;
7c8fe5c4 2966
3a71aa26
AM		 2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2969 {
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2971 unsigned *symndx;
2972
2973 /* And the relocation addend. */
2974 bfd_vma *add;
2975 } toc;
7c8fe5c4
AM		 2976 } u;
2977
2978 enum _ppc64_sec_type sec_type:2;
411e1bfb 2979
7c8fe5c4
AM		 2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2983};
2984
2985#define ppc64_elf_section_data(sec) \
411e1bfb 2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2987
2988static bfd_boolean
4ce794b7 2989ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2990{
f592407e
AM		 2991 if (!sec->used_by_bfd)
2992 {
2993 struct _ppc64_elf_section_data *sdata;
2994 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2995
f592407e
AM		 2996 sdata = bfd_zalloc (abfd, amt);
2997 if (sdata == NULL)
2998 return FALSE;
2999 sec->used_by_bfd = sdata;
3000 }
f0abc2a1
AM		 3001
3002 return _bfd_elf_new_section_hook (abfd, sec);
3003}
4025353c 3004
74f0fb50 3005static struct _opd_sec_data *
4025353c
AM		 3006get_opd_info (asection * sec)
3007{
3008 if (sec != NULL
3009 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 3010 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 3011 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM		 3012 return NULL;
3013}
90e3cdf2
JJ		 3014\f
3015/* Parameters for the qsort hook. */
90e3cdf2
JJ		 3016static bfd_boolean synthetic_relocatable;
3017
699733f6 3018/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 3019
3020static int
3021compare_symbols (const void *ap, const void *bp)
3022{
3023 const asymbol *a = * (const asymbol **) ap;
3024 const asymbol *b = * (const asymbol **) bp;
3025
699733f6
AM		 3026 /* Section symbols first. */
3027 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 3028 return -1;
699733f6 3029 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 3030 return 1;
3031
699733f6 3032 /* then .opd symbols. */
ffcfec52
AM		 3033 if (strcmp (a->section->name, ".opd") == 0
3034 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 3035 return -1;
ffcfec52
AM		 3036 if (strcmp (a->section->name, ".opd") != 0
3037 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ		 3038 return 1;
3039
699733f6 3040 /* then other code symbols. */
90e3cdf2
JJ		 3041 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3042 == (SEC_CODE | SEC_ALLOC)
3043 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 != (SEC_CODE | SEC_ALLOC))
3045 return -1;
3046
3047 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3048 != (SEC_CODE | SEC_ALLOC)
3049 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 == (SEC_CODE | SEC_ALLOC))
3051 return 1;
3052
3053 if (synthetic_relocatable)
3054 {
3055 if (a->section->id < b->section->id)
3056 return -1;
3057
3058 if (a->section->id > b->section->id)
3059 return 1;
3060 }
3061
3062 if (a->value + a->section->vma < b->value + b->section->vma)
3063 return -1;
3064
3065 if (a->value + a->section->vma > b->value + b->section->vma)
3066 return 1;
3067
4d35a0aa
AM		 3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3071 return -1;
3072
3073 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3074 return 1;
3075
3076 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3077 return -1;
3078
3079 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3080 return 1;
3081
3082 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3083 return -1;
3084
3085 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3086 return 1;
3087
3088 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3089 return -1;
3090
3091 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3092 return 1;
3093
90e3cdf2
JJ		 3094 return 0;
3095}
3096
699733f6 3097/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 3098
699733f6
AM		 3099static asymbol *
3100sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 3101{
699733f6 3102 long mid;
90e3cdf2 3103
699733f6
AM		 3104 if (id == -1)
3105 {
3106 while (lo < hi)
3107 {
3108 mid = (lo + hi) >> 1;
3109 if (syms[mid]->value + syms[mid]->section->vma < value)
3110 lo = mid + 1;
3111 else if (syms[mid]->value + syms[mid]->section->vma > value)
3112 hi = mid;
3113 else
3114 return syms[mid];
3115 }
3116 }
3117 else
3118 {
3119 while (lo < hi)
3120 {
3121 mid = (lo + hi) >> 1;
3122 if (syms[mid]->section->id < id)
3123 lo = mid + 1;
3124 else if (syms[mid]->section->id > id)
3125 hi = mid;
3126 else if (syms[mid]->value < value)
3127 lo = mid + 1;
3128 else if (syms[mid]->value > value)
3129 hi = mid;
3130 else
3131 return syms[mid];
3132 }
3133 }
3134 return NULL;
90e3cdf2
JJ		 3135}
3136
468392fb
AM		 3137static bfd_boolean
3138section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3139{
3140 bfd_vma vma = *(bfd_vma *) ptr;
3141 return ((section->flags & SEC_ALLOC) != 0
3142 && section->vma <= vma
3143 && vma < section->vma + section->size);
3144}
3145
699733f6 3146/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 3147 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ		 3148
3149static long
a7535cf3
AM		 3150ppc64_elf_get_synthetic_symtab (bfd *abfd,
3151 long static_count, asymbol **static_syms,
3152 long dyn_count, asymbol **dyn_syms,
c9727e01 3153 asymbol **ret)
90e3cdf2
JJ		 3154{
3155 asymbol *s;
699733f6
AM		 3156 long i;
3157 long count;
90e3cdf2 3158 char *names;
a7535cf3 3159 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
ee67d69a 3160 asection *opd = NULL;
90e3cdf2 3161 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 3162 asymbol **syms;
ee67d69a 3163 int abi = abiversion (abfd);
90e3cdf2
JJ		 3164
3165 *ret = NULL;
3166
ee67d69a
AM		 3167 if (abi < 2)
3168 {
3169 opd = bfd_get_section_by_name (abfd, ".opd");
3170 if (opd == NULL && abi == 1)
3171 return 0;
3172 }
90e3cdf2 3173
a7535cf3 3174 symcount = static_count;
c9727e01 3175 if (!relocatable)
a7535cf3 3176 symcount += dyn_count;
90e3cdf2 3177 if (symcount == 0)
c9727e01 3178 return 0;
90e3cdf2 3179
a7535cf3
AM		 3180 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3181 if (syms == NULL)
7356fed5 3182 return -1;
a7535cf3
AM		 3183
3184 if (!relocatable && static_count != 0 && dyn_count != 0)
3185 {
3186 /* Use both symbol tables. */
3187 memcpy (syms, static_syms, static_count * sizeof (*syms));
3188 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3189 }
3190 else if (!relocatable && static_count == 0)
3191 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3192 else
3193 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3194
90e3cdf2 3195 synthetic_relocatable = relocatable;
595da8c5 3196 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3197
c9727e01
AM		 3198 if (!relocatable && symcount > 1)
3199 {
3200 long j;
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3203 different values, so trim any with the same value. */
c9727e01
AM		 3204 for (i = 1, j = 1; i < symcount; ++i)
3205 if (syms[i - 1]->value + syms[i - 1]->section->vma
3206 != syms[i]->value + syms[i]->section->vma)
3207 syms[j++] = syms[i];
3208 symcount = j;
3209 }
3210
699733f6 3211 i = 0;
ffcfec52 3212 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM		 3213 ++i;
3214 codesecsym = i;
90e3cdf2 3215
699733f6
AM		 3216 for (; i < symcount; ++i)
3217 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3218 != (SEC_CODE | SEC_ALLOC))
3219 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3220 break;
3221 codesecsymend = i;
90e3cdf2 3222
699733f6
AM		 3223 for (; i < symcount; ++i)
3224 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3225 break;
3226 secsymend = i;
90e3cdf2 3227
699733f6 3228 for (; i < symcount; ++i)
ffcfec52 3229 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM		 3230 break;
3231 opdsymend = i;
90e3cdf2 3232
699733f6
AM		 3233 for (; i < symcount; ++i)
3234 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3235 != (SEC_CODE | SEC_ALLOC))
3236 break;
3237 symcount = i;
3238
c9727e01 3239 count = 0;
90e3cdf2 3240
699733f6 3241 if (relocatable)
90e3cdf2 3242 {
699733f6
AM		 3243 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3244 arelent *r;
3245 size_t size;
3246 long relcount;
90e3cdf2 3247
468392fb
AM		 3248 if (opdsymend == secsymend)
3249 goto done;
3250
699733f6 3251 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3252 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3253 if (relcount == 0)
c9727e01 3254 goto done;
90e3cdf2 3255
7356fed5
AM		 3256 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3257 {
3258 count = -1;
3259 goto done;
3260 }
3261
699733f6 3262 size = 0;
595da8c5 3263 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 3264 {
3265 asymbol *sym;
90e3cdf2 3266
595da8c5 3267 while (r < opd->relocation + relcount
699733f6
AM		 3268 && r->address < syms[i]->value + opd->vma)
3269 ++r;
90e3cdf2 3270
595da8c5 3271 if (r == opd->relocation + relcount)
699733f6 3272 break;
90e3cdf2 3273
699733f6
AM		 3274 if (r->address != syms[i]->value + opd->vma)
3275 continue;
90e3cdf2 3276
699733f6
AM		 3277 if (r->howto->type != R_PPC64_ADDR64)
3278 continue;
90e3cdf2 3279
699733f6
AM		 3280 sym = *r->sym_ptr_ptr;
3281 if (!sym_exists_at (syms, opdsymend, symcount,
3282 sym->section->id, sym->value + r->addend))
3283 {
3284 ++count;
3285 size += sizeof (asymbol);
3286 size += strlen (syms[i]->name) + 2;
3287 }
3288 }
90e3cdf2 3289
699733f6
AM		 3290 s = *ret = bfd_malloc (size);
3291 if (s == NULL)
3292 {
7356fed5 3293 count = -1;
c9727e01 3294 goto done;
699733f6 3295 }
90e3cdf2 3296
699733f6 3297 names = (char *) (s + count);
90e3cdf2 3298
595da8c5 3299 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3300 {
699733f6 3301 asymbol *sym;
90e3cdf2 3302
595da8c5 3303 while (r < opd->relocation + relcount
699733f6
AM		 3304 && r->address < syms[i]->value + opd->vma)
3305 ++r;
90e3cdf2 3306
595da8c5 3307 if (r == opd->relocation + relcount)
699733f6
AM		 3308 break;
3309
3310 if (r->address != syms[i]->value + opd->vma)
3311 continue;
3312
3313 if (r->howto->type != R_PPC64_ADDR64)
3314 continue;
90e3cdf2 3315
699733f6
AM		 3316 sym = *r->sym_ptr_ptr;
3317 if (!sym_exists_at (syms, opdsymend, symcount,
3318 sym->section->id, sym->value + r->addend))
3319 {
3320 size_t len;
3321
3322 *s = *syms[i];
6ba2a415 3323 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3324 s->section = sym->section;
3325 s->value = sym->value + r->addend;
3326 s->name = names;
3327 *names++ = '.';
3328 len = strlen (syms[i]->name);
3329 memcpy (names, syms[i]->name, len + 1);
3330 names += len + 1;
6f610d07
UW		 3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s->udata.p = syms[i];
699733f6
AM		 3334 s++;
3335 }
3336 }
3337 }
3338 else
90e3cdf2 3339 {
468392fb 3340 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
ee67d69a 3341 bfd_byte *contents = NULL;
699733f6 3342 size_t size;
468392fb
AM		 3343 long plt_count = 0;
3344 bfd_vma glink_vma = 0, resolv_vma = 0;
3345 asection *dynamic, *glink = NULL, *relplt = NULL;
3346 arelent *p;
90e3cdf2 3347
ee67d69a 3348 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
699733f6 3349 {
ee67d69a 3350 free_contents_and_exit:
699733f6 3351 if (contents)
ee67d69a 3352 free (contents);
7356fed5 3353 count = -1;
c9727e01 3354 goto done;
699733f6 3355 }
90e3cdf2 3356
699733f6
AM		 3357 size = 0;
3358 for (i = secsymend; i < opdsymend; ++i)
3359 {
3360 bfd_vma ent;
90e3cdf2 3361
5ef11c02
AM		 3362 /* Ignore bogus symbols. */
3363 if (syms[i]->value > opd->size - 8)
3364 continue;
3365
699733f6
AM		 3366 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3367 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3368 {
3369 ++count;
3370 size += sizeof (asymbol);
3371 size += strlen (syms[i]->name) + 2;
3372 }
3373 }
90e3cdf2 3374
468392fb 3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3376 if (dyn_count != 0
3377 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3378 {
3379 bfd_byte *dynbuf, *extdyn, *extdynend;
3380 size_t extdynsize;
3381 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3382
3383 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3384 goto free_contents_and_exit;
3385
3386 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3387 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3388
3389 extdyn = dynbuf;
3390 extdynend = extdyn + dynamic->size;
3391 for (; extdyn < extdynend; extdyn += extdynsize)
3392 {
3393 Elf_Internal_Dyn dyn;
3394 (*swap_dyn_in) (abfd, extdyn, &dyn);
3395
3396 if (dyn.d_tag == DT_NULL)
3397 break;
3398
3399 if (dyn.d_tag == DT_PPC64_GLINK)
3400 {
b9e5796b
AM		 3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
468392fb
AM		 3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink = bfd_sections_find_if (abfd, section_covers_vma,
3408 &glink_vma);
3409 break;
3410 }
3411 }
3412
3413 free (dynbuf);
3414 }
3415
3416 if (glink != NULL)
3417 {
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3420 bfd_byte buf[4];
b9e5796b
AM		 3421 unsigned int off = 0;
3422
3423 while (bfd_get_section_contents (abfd, glink, buf,
3424 glink_vma + off - glink->vma, 4))
468392fb
AM		 3425 {
3426 unsigned int insn = bfd_get_32 (abfd, buf);
3427 insn ^= B_DOT;
3428 if ((insn & ~0x3fffffc) == 0)
b9e5796b
AM		 3429 {
3430 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3431 break;
3432 }
3433 off += 4;
3434 if (off > 4)
3435 break;
468392fb
AM		 3436 }
3437
3438 if (resolv_vma)
3439 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3440
066ee829
AM		 3441 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3442 if (relplt != NULL)
3443 {
3444 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3445 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3446 goto free_contents_and_exit;
68ffbac6 3447
066ee829
AM		 3448 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3449 size += plt_count * sizeof (asymbol);
468392fb 3450
066ee829
AM		 3451 p = relplt->relocation;
3452 for (i = 0; i < plt_count; i++, p++)
e054468f
AM		 3453 {
3454 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3455 if (p->addend != 0)
3456 size += sizeof ("+0x") - 1 + 16;
3457 }
066ee829 3458 }
468392fb
AM		 3459 }
3460
699733f6
AM		 3461 s = *ret = bfd_malloc (size);
3462 if (s == NULL)
7356fed5 3463 goto free_contents_and_exit;
90e3cdf2 3464
468392fb 3465 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3466
699733f6 3467 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3468 {
699733f6 3469 bfd_vma ent;
90e3cdf2 3470
5ef11c02
AM		 3471 if (syms[i]->value > opd->size - 8)
3472 continue;
3473
699733f6
AM		 3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3476 {
c9727e01 3477 long lo, hi;
699733f6 3478 size_t len;
c9727e01 3479 asection *sec = abfd->sections;
90e3cdf2 3480
699733f6
AM		 3481 *s = *syms[i];
3482 lo = codesecsym;
3483 hi = codesecsymend;
3484 while (lo < hi)
3485 {
c9727e01 3486 long mid = (lo + hi) >> 1;
699733f6
AM		 3487 if (syms[mid]->section->vma < ent)
3488 lo = mid + 1;
3489 else if (syms[mid]->section->vma > ent)
3490 hi = mid;
3491 else
c9727e01
AM		 3492 {
3493 sec = syms[mid]->section;
3494 break;
3495 }
699733f6
AM		 3496 }
3497
c9727e01 3498 if (lo >= hi && lo > codesecsym)
699733f6 3499 sec = syms[lo - 1]->section;
699733f6
AM		 3500
3501 for (; sec != NULL; sec = sec->next)
3502 {
3503 if (sec->vma > ent)
3504 break;
63524580
JK		 3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3506 info file. */
3507 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM		 3508 break;
3509 if ((sec->flags & SEC_CODE) != 0)
3510 s->section = sec;
3511 }
6ba2a415 3512 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3513 s->value = ent - s->section->vma;
3514 s->name = names;
3515 *names++ = '.';
3516 len = strlen (syms[i]->name);
3517 memcpy (names, syms[i]->name, len + 1);
3518 names += len + 1;
6f610d07
UW		 3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s->udata.p = syms[i];
699733f6 3522 s++;
90e3cdf2 3523 }
90e3cdf2 3524 }
699733f6 3525 free (contents);
468392fb
AM		 3526
3527 if (glink != NULL && relplt != NULL)
3528 {
3529 if (resolv_vma)
3530 {
3531 /* Add a symbol for the main glink trampoline. */
86a4952b 3532 memset (s, 0, sizeof *s);
468392fb 3533 s->the_bfd = abfd;
6ba2a415 3534 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3535 s->section = glink;
3536 s->value = resolv_vma - glink->vma;
3537 s->name = names;
3538 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names += sizeof ("__glink_PLTresolve");
3540 s++;
3541 count++;
3542 }
3543
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3551
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p = relplt->relocation;
3561 for (i = 0; i < plt_count; i++, p++)
3562 {
3563 size_t len;
3564
3565 *s = **p->sym_ptr_ptr;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s->flags & BSF_LOCAL) == 0)
3569 s->flags |= BSF_GLOBAL;
6ba2a415 3570 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3571 s->section = glink;
3572 s->value = glink_vma - glink->vma;
3573 s->name = names;
3574 s->udata.p = NULL;
3575 len = strlen ((*p->sym_ptr_ptr)->name);
3576 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3577 names += len;
e054468f
AM		 3578 if (p->addend != 0)
3579 {
3580 memcpy (names, "+0x", sizeof ("+0x") - 1);
3581 names += sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd, names, p->addend);
3583 names += strlen (names);
3584 }
468392fb
AM		 3585 memcpy (names, "@plt", sizeof ("@plt"));
3586 names += sizeof ("@plt");
3587 s++;
b9e5796b
AM		 3588 if (abi < 2)
3589 {
3590 glink_vma += 8;
3591 if (i >= 0x8000)
3592 glink_vma += 4;
3593 }
3594 else
468392fb
AM		 3595 glink_vma += 4;
3596 }
3597 count += plt_count;
3598 }
90e3cdf2
JJ		 3599 }
3600
c9727e01 3601 done:
a7535cf3 3602 free (syms);
90e3cdf2
JJ		 3603 return count;
3604}
5bd4f169 3605\f
65f38f15
AM		 3606/* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3612 called.
3613
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3617
3618 . .text
3619 . x:
3620 . bl .foo
3621 . nop
3622
3623 The function definition in another object file might be:
3624
3625 . .section .opd
3626 . foo: .quad .foo
3627 . .quad .TOC.@tocbase
3628 . .quad 0
3629 .
3630 . .text
3631 . .foo: blr
3632
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3638
3639 . x:
3640 . bl .foo_stub
3641 . ld 2,40(1)
3642 .
3643 .
3644 . .foo_stub:
71a39c98
AM		 3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3648 . ld 12,0(11)
3649 . ld 2,8(11)
3650 . mtctr 12
3651 . ld 11,16(11)
e86ce104
AM		 3652 . bctr
3653 .
3654 . .section .plt
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3656
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3659 copying.
3660
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3672 definition from some other object, eg. a static library.
3673
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
65f38f15 3677
1d483afe 3678/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
65f38f15 3681
1d483afe
AM		 3682static int
3683must_be_dyn_reloc (struct bfd_link_info *info,
3684 enum elf_ppc64_reloc_type r_type)
3685{
3686 switch (r_type)
3687 {
3688 default:
3689 return 1;
3690
3691 case R_PPC64_REL32:
3692 case R_PPC64_REL64:
3693 case R_PPC64_REL30:
3694 return 0;
3695
3696 case R_PPC64_TPREL16:
3697 case R_PPC64_TPREL16_LO:
3698 case R_PPC64_TPREL16_HI:
3699 case R_PPC64_TPREL16_HA:
3700 case R_PPC64_TPREL16_DS:
3701 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 3702 case R_PPC64_TPREL16_HIGH:
3703 case R_PPC64_TPREL16_HIGHA:
1d483afe
AM		 3704 case R_PPC64_TPREL16_HIGHER:
3705 case R_PPC64_TPREL16_HIGHERA:
3706 case R_PPC64_TPREL16_HIGHEST:
3707 case R_PPC64_TPREL16_HIGHESTA:
3708 case R_PPC64_TPREL64:
3709 return !info->executable;
3710 }
3711}
65f38f15 3712
f4656909
AM		 3713/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3724 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
a23b6845 3728#define ELIMINATE_COPY_RELOCS 1
f4656909 3729
721956f4 3730/* Section name for stubs is the associated section name plus this
29942be8
NC		 3731 string. */
3732#define STUB_SUFFIX ".stub"
721956f4
AM		 3733
3734/* Linker stubs.
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3738 . b dest
3739
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
71a39c98
AM		 3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3745 . mtctr %r12
721956f4
AM		 3746 . bctr
3747
3748 ppc_stub_plt_call:
2c66dc6c
AM		 3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
71a39c98 3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
721956f4 3752 . std %r2,40(%r1)
71a39c98
AM		 3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3755 . mtctr %r12
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
721956f4 3758 . bctr
ad8e1ba5
AM		 3759
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3763 . std %r2,40(%r1)
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3766 . b dest
3767
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3769 . std %r2,40(%r1)
71a39c98
AM		 3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
ad8e1ba5
AM		 3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
71a39c98 3774 . mtctr %r12
ad8e1ba5 3775 . bctr
ac2df442
AM		 3776
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3779*/
3780
3781enum ppc_stub_type {
3782 ppc_stub_none,
3783 ppc_stub_long_branch,
ad8e1ba5 3784 ppc_stub_long_branch_r2off,
721956f4 3785 ppc_stub_plt_branch,
ad8e1ba5 3786 ppc_stub_plt_branch_r2off,
794e51c0 3787 ppc_stub_plt_call,
7341d5e2
AM		 3788 ppc_stub_plt_call_r2save,
3789 ppc_stub_global_entry
721956f4
AM		 3790};
3791
3792struct ppc_stub_hash_entry {
3793
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root;
3796
ad8e1ba5
AM		 3797 enum ppc_stub_type stub_type;
3798
721956f4
AM		 3799 /* The stub section. */
3800 asection *stub_sec;
3801
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset;
3804
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value;
3808 asection *target_section;
3809
721956f4
AM		 3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry *h;
e054468f 3812 struct plt_entry *plt_ent;
721956f4
AM		 3813
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3816 asection *id_sec;
6911b7dc
AM		 3817
3818 /* Symbol st_other. */
3819 unsigned char other;
721956f4
AM		 3820};
3821
3822struct ppc_branch_hash_entry {
3823
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root;
3826
c456f082 3827 /* Offset within branch lookup table. */
721956f4
AM		 3828 unsigned int offset;
3829
3830 /* Generation marker. */
3831 unsigned int iter;
3832};
65f38f15 3833
19e08130
AM		 3834/* Used to track dynamic relocations for local symbols. */
3835struct ppc_dyn_relocs
3836{
3837 struct ppc_dyn_relocs *next;
3838
3839 /* The input section of the reloc. */
3840 asection *sec;
3841
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count : 31;
3844
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc : 1;
3847};
3848
65f38f15
AM		 3849struct ppc_link_hash_entry
3850{
3851 struct elf_link_hash_entry elf;
3852
b3fac117
AM		 3853 union {
3854 /* A pointer to the most recently used stub hash entry against this
3855 symbol. */
3856 struct ppc_stub_hash_entry *stub_cache;
3857
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry *next_dot_sym;
3860 } u;
721956f4 3861
65f38f15 3862 /* Track dynamic relocs copied for this symbol. */
6061a67d 3863 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3864
721956f4 3865 /* Link between function code and descriptor symbols. */
34814b9f 3866 struct ppc_link_hash_entry *oh;
721956f4 3867
e86ce104
AM		 3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func:1;
3870 unsigned int is_func_descriptor:1;
908b32fc 3871 unsigned int fake:1;
411e1bfb 3872
c5614fa4
AM		 3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3876 unsigned int adjust_done:1;
3877
99877b66
AM		 3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined:1;
3880
411e1bfb 3881 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889#define TLS_GD 1 /* GD reloc. */
3890#define TLS_LD 2 /* LD reloc. */
3891#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893#define TLS_TLS 16 /* Any TLS reloc. */
3894#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3896#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3897 unsigned char tls_mask;
65f38f15
AM		 3898};
3899
3900/* ppc64 ELF linker hash table. */
3901
3902struct ppc_link_hash_table
3903{
3904 struct elf_link_hash_table elf;
3905
721956f4
AM		 3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table;
3908
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table;
3911
3b421ab3
AM		 3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab;
3914
e7d1c40c
AM		 3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params *params;
721956f4
AM		 3917
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3920 struct map_stub {
3921 /* This is the section to which stubs in the group will be attached. */
3922 asection *link_sec;
3923 /* The stub section. */
3924 asection *stub_sec;
ad8e1ba5
AM		 3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3926 bfd_vma toc_off;
721956f4
AM		 3927 } *stub_group;
3928
ad8e1ba5
AM		 3929 /* Temp used when calculating TOC pointers. */
3930 bfd_vma toc_curr;
bf102f86
AM		 3931 bfd *toc_bfd;
3932 asection *toc_first_sec;
ad8e1ba5 3933
8f3bab57
AM		 3934 /* Highest input section id. */
3935 int top_id;
3936
734b6cf9
AM		 3937 /* Highest output section index. */
3938 int top_index;
3939
b3fac117
AM		 3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry *dot_syms;
3942
734b6cf9
AM		 3943 /* List of input sections for each output section. */
3944 asection **input_list;
721956f4 3945
33e44f2e 3946 /* Shortcuts to get to dynamic linker sections. */
4ce794b7
AM		 3947 asection *dynbss;
3948 asection *relbss;
3949 asection *glink;
82bd7b59 3950 asection *sfpr;
4ce794b7
AM		 3951 asection *brlt;
3952 asection *relbrlt;
58d180e8 3953 asection *glink_eh_frame;
ec338859 3954
8387904d
AM		 3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry *tls_get_addr;
3957 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3958
927be08e
AM		 3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size;
3961
9b5ecbd0 3962 /* Statistics. */
7341d5e2 3963 unsigned long stub_count[ppc_stub_global_entry];
9b5ecbd0 3964
ee75fd95
AM		 3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals;
3967
ee67d69a
AM		 3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi:1;
3970
4c52953f 3971 /* Support for multiple toc sections. */
33c0ec9d 3972 unsigned int do_multi_toc:1;
4c52953f 3973 unsigned int multi_toc_needed:1;
927be08e 3974 unsigned int second_toc_pass:1;
67f0cbdb 3975 unsigned int do_toc_opt:1;
4c52953f 3976
5d1634d7 3977 /* Set on error. */
99877b66 3978 unsigned int stub_error:1;
721956f4 3979
f6c7c3e8 3980 /* Temp used by ppc64_elf_before_check_relocs. */
99877b66 3981 unsigned int twiddled_syms:1;
721956f4
AM		 3982
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration;
5d1634d7 3985
87d72d41
AM		 3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache;
65f38f15
AM		 3988};
3989
4c52953f
AM		 3990/* Rename some of the generic section flags to better document how they
3991 are used here. */
b0dddeec
AM		 3992
3993/* Nonzero if this section has TLS related relocations. */
3994#define has_tls_reloc sec_flg0
3995
3996/* Nonzero if this section has a call to __tls_get_addr. */
3997#define has_tls_get_addr_call sec_flg1
3998
3999/* Nonzero if this section has any toc or got relocs. */
4000#define has_toc_reloc sec_flg2
4001
4002/* Nonzero if this section has a call to another section that uses
4003 the toc or got. */
d77c8a4b 4004#define makes_toc_func_call sec_flg3
b0dddeec
AM		 4005
4006/* Recursion protection when determining above flag. */
d77c8a4b 4007#define call_check_in_progress sec_flg4
70cc837d 4008#define call_check_done sec_flg5
4c52953f 4009
65f38f15
AM		 4010/* Get the ppc64 ELF linker hash table from a link_info structure. */
4011
4012#define ppc_hash_table(p) \
4dfe6ac6
NC		 4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 4015
721956f4
AM		 4016#define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4019
4020#define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4023
4024/* Create an entry in the stub hash table. */
4025
4026static struct bfd_hash_entry *
4ce794b7
AM		 4027stub_hash_newfunc (struct bfd_hash_entry *entry,
4028 struct bfd_hash_table *table,
4029 const char *string)
721956f4
AM		 4030{
4031 /* Allocate the structure if it has not already been allocated by a
4032 subclass. */
4033 if (entry == NULL)
4034 {
4035 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4036 if (entry == NULL)
4037 return entry;
4038 }
4039
4040 /* Call the allocation method of the superclass. */
4041 entry = bfd_hash_newfunc (entry, table, string);
4042 if (entry != NULL)
4043 {
4044 struct ppc_stub_hash_entry *eh;
4045
4046 /* Initialize the local fields. */
4047 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 4048 eh->stub_type = ppc_stub_none;
721956f4
AM		 4049 eh->stub_sec = NULL;
4050 eh->stub_offset = 0;
4051 eh->target_value = 0;
4052 eh->target_section = NULL;
721956f4 4053 eh->h = NULL;
6911b7dc 4054 eh->plt_ent = NULL;
721956f4 4055 eh->id_sec = NULL;
6911b7dc 4056 eh->other = 0;
721956f4
AM		 4057 }
4058
4059 return entry;
4060}
4061
4062/* Create an entry in the branch hash table. */
4063
4064static struct bfd_hash_entry *
4ce794b7
AM		 4065branch_hash_newfunc (struct bfd_hash_entry *entry,
4066 struct bfd_hash_table *table,
4067 const char *string)
721956f4
AM		 4068{
4069 /* Allocate the structure if it has not already been allocated by a
4070 subclass. */
4071 if (entry == NULL)
4072 {
4073 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4074 if (entry == NULL)
4075 return entry;
4076 }
4077
4078 /* Call the allocation method of the superclass. */
4079 entry = bfd_hash_newfunc (entry, table, string);
4080 if (entry != NULL)
4081 {
4082 struct ppc_branch_hash_entry *eh;
4083
4084 /* Initialize the local fields. */
4085 eh = (struct ppc_branch_hash_entry *) entry;
4086 eh->offset = 0;
4087 eh->iter = 0;
4088 }
4089
4090 return entry;
4091}
4092
65f38f15
AM		 4093/* Create an entry in a ppc64 ELF linker hash table. */
4094
4095static struct bfd_hash_entry *
4ce794b7
AM		 4096link_hash_newfunc (struct bfd_hash_entry *entry,
4097 struct bfd_hash_table *table,
4098 const char *string)
65f38f15
AM		 4099{
4100 /* Allocate the structure if it has not already been allocated by a
4101 subclass. */
4102 if (entry == NULL)
4103 {
4104 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4105 if (entry == NULL)
4106 return entry;
4107 }
4108
4109 /* Call the allocation method of the superclass. */
4110 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4111 if (entry != NULL)
4112 {
4113 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4114
b3fac117 4115 memset (&eh->u.stub_cache, 0,
908b32fc 4116 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 4117 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4118
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4123
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4126 "bar" too).
4127 A new object defines "foo" and references "bar".
4128
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4132
4133 Keep a list of newly added dot-symbols. */
4134
4135 if (string[0] == '.')
4136 {
4137 struct ppc_link_hash_table *htab;
4138
4139 htab = (struct ppc_link_hash_table *) table;
4140 eh->u.next_dot_sym = htab->dot_syms;
4141 htab->dot_syms = eh;
4142 }
65f38f15
AM		 4143 }
4144
4145 return entry;
4146}
4147
3b421ab3
AM		 4148struct tocsave_entry {
4149 asection *sec;
4150 bfd_vma offset;
4151};
4152
4153static hashval_t
4154tocsave_htab_hash (const void *p)
4155{
4156 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4157 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4158}
4159
4160static int
4161tocsave_htab_eq (const void *p1, const void *p2)
4162{
4163 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4164 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4165 return e1->sec == e2->sec && e1->offset == e2->offset;
4166}
4167
68faa637
AM		 4168/* Destroy a ppc64 ELF linker hash table. */
4169
4170static void
d495ab0d 4171ppc64_elf_link_hash_table_free (bfd *obfd)
68faa637 4172{
d495ab0d 4173 struct ppc_link_hash_table *htab;
68faa637 4174
d495ab0d 4175 htab = (struct ppc_link_hash_table *) obfd->link.hash;
68faa637
AM		 4176 if (htab->tocsave_htab)
4177 htab_delete (htab->tocsave_htab);
d495ab0d
AM		 4178 bfd_hash_table_free (&htab->branch_hash_table);
4179 bfd_hash_table_free (&htab->stub_hash_table);
4180 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 4181}
4182
65f38f15
AM		 4183/* Create a ppc64 ELF linker hash table. */
4184
4185static struct bfd_link_hash_table *
4ce794b7 4186ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 4187{
4188 struct ppc_link_hash_table *htab;
4189 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4190
4ce794b7 4191 htab = bfd_zmalloc (amt);
65f38f15
AM		 4192 if (htab == NULL)
4193 return NULL;
4194
66eb6687 4195 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 4196 sizeof (struct ppc_link_hash_entry),
4197 PPC64_ELF_DATA))
65f38f15 4198 {
e2d34d7d 4199 free (htab);
65f38f15
AM		 4200 return NULL;
4201 }
4202
721956f4 4203 /* Init the stub hash table too. */
66eb6687
AM		 4204 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4205 sizeof (struct ppc_stub_hash_entry)))
2915c55b 4206 {
d495ab0d 4207 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4208 return NULL;
4209 }
721956f4
AM		 4210
4211 /* And the branch hash table. */
66eb6687
AM		 4212 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4213 sizeof (struct ppc_branch_hash_entry)))
2915c55b
JK		 4214 {
4215 bfd_hash_table_free (&htab->stub_hash_table);
d495ab0d 4216 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4217 return NULL;
4218 }
721956f4 4219
3b421ab3
AM		 4220 htab->tocsave_htab = htab_try_create (1024,
4221 tocsave_htab_hash,
4222 tocsave_htab_eq,
4223 NULL);
4224 if (htab->tocsave_htab == NULL)
2915c55b 4225 {
d495ab0d 4226 ppc64_elf_link_hash_table_free (abfd);
2915c55b
JK		 4227 return NULL;
4228 }
d495ab0d 4229 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
3b421ab3 4230
3254fd24
AM		 4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
a6aa5195
AM		 4235 htab->elf.init_got_refcount.refcount = 0;
4236 htab->elf.init_got_refcount.glist = NULL;
4237 htab->elf.init_plt_refcount.refcount = 0;
4238 htab->elf.init_plt_refcount.glist = NULL;
4239 htab->elf.init_got_offset.offset = 0;
4240 htab->elf.init_got_offset.glist = NULL;
4241 htab->elf.init_plt_offset.offset = 0;
4242 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4243
65f38f15
AM		 4244 return &htab->elf.root;
4245}
4246
bfeb4a28
AM		 4247/* Create sections for linker generated code. */
4248
4249static bfd_boolean
4250create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4251{
4252 struct ppc_link_hash_table *htab;
4253 flagword flags;
4254
4255 htab = ppc_hash_table (info);
4256
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4261 flags);
4262 if (htab->sfpr == NULL
4263 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4264 return FALSE;
4265
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4268 flags);
4269 if (htab->glink == NULL
4270 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4271 return FALSE;
4272
4273 if (!info->no_ld_generated_unwind_info)
4274 {
4275 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4277 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4278 ".eh_frame",
4279 flags);
4280 if (htab->glink_eh_frame == NULL
4281 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4282 return FALSE;
4283 }
4284
4285 flags = SEC_ALLOC | SEC_LINKER_CREATED;
33e44f2e
AM		 4286 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4287 if (htab->elf.iplt == NULL
4288 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
bfeb4a28
AM		 4289 return FALSE;
4290
4291 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4292 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
33e44f2e
AM		 4293 htab->elf.irelplt
4294 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4295 if (htab->elf.irelplt == NULL
4296 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
bfeb4a28
AM		 4297 return FALSE;
4298
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags = (SEC_ALLOC | SEC_LOAD
4301 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4302 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4303 flags);
4304 if (htab->brlt == NULL
4305 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4306 return FALSE;
4307
4308 if (!info->shared)
4309 return TRUE;
4310
4311 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4312 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4313 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4314 ".rela.branch_lt",
4315 flags);
4316 if (htab->relbrlt == NULL
4317 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4318 return FALSE;
4319
4320 return TRUE;
4321}
4322
e717da7e
AM		 4323/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4324
bfeb4a28 4325bfd_boolean
e7d1c40c
AM		 4326ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4327 struct ppc64_elf_params *params)
e717da7e
AM		 4328{
4329 struct ppc_link_hash_table *htab;
4330
e7d1c40c 4331 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
e717da7e
AM		 4332
4333/* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab = ppc_hash_table (info);
4dfe6ac6 4337 if (htab == NULL)
bfeb4a28 4338 return FALSE;
e7d1c40c
AM		 4339 htab->elf.dynobj = params->stub_bfd;
4340 htab->params = params;
bfeb4a28
AM		 4341
4342 if (info->relocatable)
4343 return TRUE;
4344
4345 return create_linkage_sections (htab->elf.dynobj, info);
e717da7e
AM		 4346}
4347
721956f4
AM		 4348/* Build a name for an entry in the stub hash table. */
4349
4350static char *
4ce794b7
AM		 4351ppc_stub_name (const asection *input_section,
4352 const asection *sym_sec,
4353 const struct ppc_link_hash_entry *h,
4354 const Elf_Internal_Rela *rel)
721956f4
AM		 4355{
4356 char *stub_name;
bcaa2f82 4357 ssize_t len;
721956f4
AM		 4358
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4363
4364 if (h)
4365 {
4366 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4367 stub_name = bfd_malloc (len);
46de2a7c
AM		 4368 if (stub_name == NULL)
4369 return stub_name;
4370
bcaa2f82
AM		 4371 len = sprintf (stub_name, "%08x.%s+%x",
4372 input_section->id & 0xffffffff,
4373 h->elf.root.root.string,
4374 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 4375 }
4376 else
4377 {
ad8e1ba5 4378 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4379 stub_name = bfd_malloc (len);
46de2a7c
AM		 4380 if (stub_name == NULL)
4381 return stub_name;
4382
bcaa2f82
AM		 4383 len = sprintf (stub_name, "%08x.%x:%x+%x",
4384 input_section->id & 0xffffffff,
4385 sym_sec->id & 0xffffffff,
4386 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4387 (int) rel->r_addend & 0xffffffff);
721956f4 4388 }
bcaa2f82 4389 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
ee75fd95 4390 stub_name[len - 2] = 0;
721956f4
AM		 4391 return stub_name;
4392}
4393
4394/* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4396
4397static struct ppc_stub_hash_entry *
4ce794b7
AM		 4398ppc_get_stub_entry (const asection *input_section,
4399 const asection *sym_sec,
039b3fef 4400 struct ppc_link_hash_entry *h,
4ce794b7
AM		 4401 const Elf_Internal_Rela *rel,
4402 struct ppc_link_hash_table *htab)
721956f4
AM		 4403{
4404 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 4405 const asection *id_sec;
4406
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec = htab->stub_group[input_section->id].link_sec;
4413
b3fac117
AM		 4414 if (h != NULL && h->u.stub_cache != NULL
4415 && h->u.stub_cache->h == h
4416 && h->u.stub_cache->id_sec == id_sec)
721956f4 4417 {
b3fac117 4418 stub_entry = h->u.stub_cache;
721956f4
AM		 4419 }
4420 else
4421 {
4422 char *stub_name;
4423
4424 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4425 if (stub_name == NULL)
4426 return NULL;
4427
4428 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4429 stub_name, FALSE, FALSE);
721956f4 4430 if (h != NULL)
b3fac117 4431 h->u.stub_cache = stub_entry;
721956f4
AM		 4432
4433 free (stub_name);
4434 }
4435
4436 return stub_entry;
4437}
4438
4439/* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4441
4442static struct ppc_stub_hash_entry *
4ce794b7
AM		 4443ppc_add_stub (const char *stub_name,
4444 asection *section,
25f53a85 4445 struct bfd_link_info *info)
721956f4 4446{
25f53a85 4447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4
AM		 4448 asection *link_sec;
4449 asection *stub_sec;
4450 struct ppc_stub_hash_entry *stub_entry;
4451
4452 link_sec = htab->stub_group[section->id].link_sec;
4453 stub_sec = htab->stub_group[section->id].stub_sec;
4454 if (stub_sec == NULL)
4455 {
4456 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4457 if (stub_sec == NULL)
4458 {
d4c88bbb 4459 size_t namelen;
721956f4
AM		 4460 bfd_size_type len;
4461 char *s_name;
4462
d4c88bbb
AM		 4463 namelen = strlen (link_sec->name);
4464 len = namelen + sizeof (STUB_SUFFIX);
e7d1c40c 4465 s_name = bfd_alloc (htab->params->stub_bfd, len);
721956f4
AM		 4466 if (s_name == NULL)
4467 return NULL;
4468
d4c88bbb
AM		 4469 memcpy (s_name, link_sec->name, namelen);
4470 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
e7d1c40c 4471 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
721956f4
AM		 4472 if (stub_sec == NULL)
4473 return NULL;
4474 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4475 }
4476 htab->stub_group[section->id].stub_sec = stub_sec;
4477 }
4478
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4481 TRUE, FALSE);
721956f4
AM		 4482 if (stub_entry == NULL)
4483 {
8de848d8 4484 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4485 section->owner, stub_name);
721956f4
AM		 4486 return NULL;
4487 }
4488
4489 stub_entry->stub_sec = stub_sec;
4490 stub_entry->stub_offset = 0;
4491 stub_entry->id_sec = link_sec;
4492 return stub_entry;
4493}
4494
e717da7e
AM		 4495/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
65f38f15 4497
b34976b6 4498static bfd_boolean
e717da7e 4499create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4500{
e717da7e
AM		 4501 asection *got, *relgot;
4502 flagword flags;
4503 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4504
0c8d6e5c 4505 if (!is_ppc64_elf (abfd))
0ffa91dd 4506 return FALSE;
4dfe6ac6
NC		 4507 if (htab == NULL)
4508 return FALSE;
0ffa91dd 4509
33e44f2e
AM		 4510 if (!htab->elf.sgot
4511 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4512 return FALSE;
e717da7e
AM		 4513
4514 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED);
4516
c456f082 4517 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4518 if (!got
e717da7e
AM		 4519 || !bfd_set_section_alignment (abfd, got, 3))
4520 return FALSE;
65f38f15 4521
c456f082
AM		 4522 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4523 flags | SEC_READONLY);
e717da7e 4524 if (!relgot
e717da7e 4525 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4526 return FALSE;
e717da7e
AM		 4527
4528 ppc64_elf_tdata (abfd)->got = got;
4529 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4530 return TRUE;
65f38f15 4531}
5bd4f169 4532
82bd7b59 4533/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4534
b34976b6 4535static bfd_boolean
4ce794b7 4536ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4537{
65f38f15 4538 struct ppc_link_hash_table *htab;
5bd4f169 4539
65f38f15 4540 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4541 return FALSE;
65f38f15 4542
e717da7e 4543 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4544 if (htab == NULL)
4545 return FALSE;
4546
3d4d4302 4547 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
65f38f15 4548 if (!info->shared)
3d4d4302 4549 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
65f38f15 4550
33e44f2e 4551 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4ce794b7 4552 || (!info->shared && !htab->relbss))
65f38f15
AM		 4553 abort ();
4554
b34976b6 4555 return TRUE;
5bd4f169
AM		 4556}
4557
b31867b6
AM		 4558/* Follow indirect and warning symbol links. */
4559
4560static inline struct bfd_link_hash_entry *
4561follow_link (struct bfd_link_hash_entry *h)
4562{
4563 while (h->type == bfd_link_hash_indirect
4564 || h->type == bfd_link_hash_warning)
4565 h = h->u.i.link;
4566 return h;
4567}
4568
4569static inline struct elf_link_hash_entry *
4570elf_follow_link (struct elf_link_hash_entry *h)
4571{
4572 return (struct elf_link_hash_entry *) follow_link (&h->root);
4573}
4574
4575static inline struct ppc_link_hash_entry *
4576ppc_follow_link (struct ppc_link_hash_entry *h)
4577{
4578 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4579}
4580
40d16e0b
AM		 4581/* Merge PLT info on FROM with that on TO. */
4582
4583static void
4584move_plt_plist (struct ppc_link_hash_entry *from,
4585 struct ppc_link_hash_entry *to)
4586{
4587 if (from->elf.plt.plist != NULL)
4588 {
4589 if (to->elf.plt.plist != NULL)
4590 {
4591 struct plt_entry **entp;
4592 struct plt_entry *ent;
4593
4594 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4595 {
4596 struct plt_entry *dent;
4597
4598 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4599 if (dent->addend == ent->addend)
4600 {
4601 dent->plt.refcount += ent->plt.refcount;
4602 *entp = ent->next;
4603 break;
4604 }
4605 if (dent == NULL)
4606 entp = &ent->next;
4607 }
4608 *entp = to->elf.plt.plist;
4609 }
4610
4611 to->elf.plt.plist = from->elf.plt.plist;
4612 from->elf.plt.plist = NULL;
4613 }
4614}
4615
65f38f15
AM		 4616/* Copy the extra info we tack onto an elf_link_hash_entry. */
4617
4618static void
fcfa13d2
AM		 4619ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4620 struct elf_link_hash_entry *dir,
4621 struct elf_link_hash_entry *ind)
65f38f15
AM		 4622{
4623 struct ppc_link_hash_entry *edir, *eind;
4624
4625 edir = (struct ppc_link_hash_entry *) dir;
4626 eind = (struct ppc_link_hash_entry *) ind;
4627
c79d6685
AM		 4628 edir->is_func |= eind->is_func;
4629 edir->is_func_descriptor |= eind->is_func_descriptor;
4630 edir->tls_mask |= eind->tls_mask;
4631 if (eind->oh != NULL)
4632 edir->oh = ppc_follow_link (eind->oh);
4633
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind->elf.root.type != bfd_link_hash_indirect
4639 && edir->elf.dynamic_adjusted))
4640 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4641
4642 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4643 edir->elf.ref_regular |= eind->elf.ref_regular;
4644 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4645 edir->elf.needs_plt |= eind->elf.needs_plt;
a345bc8d 4646 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
c79d6685 4647
411e1bfb 4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4649 if (eind->dyn_relocs != NULL)
65f38f15 4650 {
bbd7ec4a
AM		 4651 if (edir->dyn_relocs != NULL)
4652 {
6061a67d
AM		 4653 struct elf_dyn_relocs **pp;
4654 struct elf_dyn_relocs *p;
bbd7ec4a 4655
fcfa13d2 4656 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4657 list. Merge any entries against the same section. */
4658 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4659 {
6061a67d 4660 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 4661
4662 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4663 if (q->sec == p->sec)
4664 {
4665 q->pc_count += p->pc_count;
4666 q->count += p->count;
4667 *pp = p->next;
4668 break;
4669 }
4670 if (q == NULL)
4671 pp = &p->next;
4672 }
4673 *pp = edir->dyn_relocs;
4674 }
4675
65f38f15
AM		 4676 edir->dyn_relocs = eind->dyn_relocs;
4677 eind->dyn_relocs = NULL;
4678 }
65f38f15 4679
68ba6d40
AM		 4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM		 4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4686 DIR sym here. */
4687 if (eind->elf.root.type != bfd_link_hash_indirect)
4688 return;
4689
81848ca0
AM		 4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
411e1bfb
AM		 4692 if (eind->elf.got.glist != NULL)
4693 {
4694 if (edir->elf.got.glist != NULL)
4695 {
4696 struct got_entry **entp;
4697 struct got_entry *ent;
4698
4699 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4700 {
4701 struct got_entry *dent;
4702
4703 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4704 if (dent->addend == ent->addend
e717da7e 4705 && dent->owner == ent->owner
411e1bfb
AM		 4706 && dent->tls_type == ent->tls_type)
4707 {
4708 dent->got.refcount += ent->got.refcount;
4709 *entp = ent->next;
4710 break;
4711 }
4712 if (dent == NULL)
4713 entp = &ent->next;
4714 }
4715 *entp = edir->elf.got.glist;
4716 }
4717
4718 edir->elf.got.glist = eind->elf.got.glist;
4719 eind->elf.got.glist = NULL;
4720 }
4721
4722 /* And plt entries. */
40d16e0b 4723 move_plt_plist (eind, edir);
411e1bfb 4724
fcfa13d2 4725 if (eind->elf.dynindx != -1)
411e1bfb 4726 {
fcfa13d2
AM		 4727 if (edir->elf.dynindx != -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4729 edir->elf.dynstr_index);
411e1bfb
AM		 4730 edir->elf.dynindx = eind->elf.dynindx;
4731 edir->elf.dynstr_index = eind->elf.dynstr_index;
4732 eind->elf.dynindx = -1;
4733 eind->elf.dynstr_index = 0;
4734 }
411e1bfb
AM		 4735}
4736
8387904d
AM		 4737/* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4739
4740static struct ppc_link_hash_entry *
b31867b6 4741lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM		 4742{
4743 struct ppc_link_hash_entry *fdh = fh->oh;
4744
4745 if (fdh == NULL)
4746 {
4747 const char *fd_name = fh->elf.root.root.string + 1;
4748
4749 fdh = (struct ppc_link_hash_entry *)
4750 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM		 4751 if (fdh == NULL)
4752 return fdh;
4753
4754 fdh->is_func_descriptor = 1;
4755 fdh->oh = fh;
4756 fh->is_func = 1;
4757 fh->oh = fdh;
8387904d
AM		 4758 }
4759
b31867b6 4760 return ppc_follow_link (fdh);
8387904d
AM		 4761}
4762
bb700d78
AM		 4763/* Make a fake function descriptor sym for the code sym FH. */
4764
4765static struct ppc_link_hash_entry *
4766make_fdh (struct bfd_link_info *info,
908b32fc 4767 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4768{
4769 bfd *abfd;
4770 asymbol *newsym;
4771 struct bfd_link_hash_entry *bh;
4772 struct ppc_link_hash_entry *fdh;
4773
4774 abfd = fh->elf.root.u.undef.abfd;
4775 newsym = bfd_make_empty_symbol (abfd);
4776 newsym->name = fh->elf.root.root.string + 1;
4777 newsym->section = bfd_und_section_ptr;
4778 newsym->value = 0;
908b32fc 4779 newsym->flags = BSF_WEAK;
bb700d78
AM		 4780
4781 bh = NULL;
4782 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4783 newsym->flags, newsym->section,
4784 newsym->value, NULL, FALSE, FALSE,
4785 &bh))
4786 return NULL;
4787
4788 fdh = (struct ppc_link_hash_entry *) bh;
4789 fdh->elf.non_elf = 0;
908b32fc
AM		 4790 fdh->fake = 1;
4791 fdh->is_func_descriptor = 1;
4792 fdh->oh = fh;
4793 fh->is_func = 1;
4794 fh->oh = fdh;
bb700d78
AM		 4795 return fdh;
4796}
4797
8387904d
AM		 4798/* Fix function descriptor symbols defined in .opd sections to be
4799 function type. */
555cd476
AM		 4800
4801static bfd_boolean
c16153ae 4802ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4803 struct bfd_link_info *info,
555cd476 4804 Elf_Internal_Sym *isym,
6911b7dc 4805 const char **name,
555cd476
AM		 4806 flagword *flags ATTRIBUTE_UNUSED,
4807 asection **sec,
4808 bfd_vma *value ATTRIBUTE_UNUSED)
4809{
f64b2e8d
NC		 4810 if ((ibfd->flags & DYNAMIC) == 0
4811 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4813
e054468f 4814 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c16153ae
L		 4815 {
4816 if ((ibfd->flags & DYNAMIC) == 0)
f64b2e8d 4817 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
c16153ae 4818 }
e054468f
AM		 4819 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4820 ;
4821 else if (*sec != NULL
70cc837d 4822 && strcmp ((*sec)->name, ".opd") == 0)
555cd476 4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4824
6911b7dc
AM		 4825 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4826 {
4827 if (abiversion (ibfd) == 0)
4828 set_abiversion (ibfd, 2);
4829 else if (abiversion (ibfd) == 1)
4830 {
4831 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4832 " for ABI version 1\n"), name);
4833 bfd_set_error (bfd_error_bad_value);
4834 return FALSE;
4835 }
4836 }
4837
555cd476
AM		 4838 return TRUE;
4839}
4840
6911b7dc
AM		 4841/* Merge non-visibility st_other attributes: local entry point. */
4842
4843static void
4844ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4845 const Elf_Internal_Sym *isym,
4846 bfd_boolean definition,
4847 bfd_boolean dynamic)
4848{
4849 if (definition && !dynamic)
4850 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4851 | ELF_ST_VISIBILITY (h->other));
4852}
4853
8387904d 4854/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4855 inclusion of a new ABI object archive that defines "bar".
4856 NAME is a symbol defined in an archive. Return a symbol in the hash
4857 table that might be satisfied by the archive symbols. */
8387904d
AM		 4858
4859static struct elf_link_hash_entry *
4860ppc64_elf_archive_symbol_lookup (bfd *abfd,
4861 struct bfd_link_info *info,
4862 const char *name)
4863{
4864 struct elf_link_hash_entry *h;
4865 char *dot_name;
4866 size_t len;
4867
4868 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4869 if (h != NULL
4870 /* Don't return this sym if it is a fake function descriptor
4871 created by add_symbol_adjust. */
4872 && !(h->root.type == bfd_link_hash_undefweak
4873 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4874 return h;
4875
4876 if (name[0] == '.')
4877 return h;
4878
4879 len = strlen (name);
4880 dot_name = bfd_alloc (abfd, len + 2);
4881 if (dot_name == NULL)
4882 return (struct elf_link_hash_entry *) 0 - 1;
4883 dot_name[0] = '.';
4884 memcpy (dot_name + 1, name, len + 1);
4885 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4886 bfd_release (abfd, dot_name);
4887 return h;
4888}
4889
4890/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4891 new ABI object defines "bar". Well, at least, undefined dot symbols
4892 are made weak. This stops later archive searches from including an
4893 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4894 prevents the linker complaining about undefined symbols.
4895 We also check and correct mismatched symbol visibility here. The
4896 most restrictive visibility of the function descriptor and the
4897 function entry symbol is used. */
8387904d
AM		 4898
4899static bfd_boolean
b3fac117 4900add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4901{
8387904d
AM		 4902 struct ppc_link_hash_table *htab;
4903 struct ppc_link_hash_entry *fdh;
4904
b3fac117 4905 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4906 return TRUE;
4907
b3fac117
AM		 4908 if (eh->elf.root.type == bfd_link_hash_warning)
4909 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4910
b3fac117
AM		 4911 if (eh->elf.root.root.string[0] != '.')
4912 abort ();
8387904d 4913
b3fac117 4914 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4915 if (htab == NULL)
4916 return FALSE;
4917
b31867b6
AM		 4918 fdh = lookup_fdh (eh, htab);
4919 if (fdh == NULL)
4920 {
4921 if (!info->relocatable
4922 && (eh->elf.root.type == bfd_link_hash_undefined
4923 || eh->elf.root.type == bfd_link_hash_undefweak)
4924 && eh->elf.ref_regular)
4925 {
4926 /* Make an undefweak function descriptor sym, which is enough to
4927 pull in an --as-needed shared lib, but won't cause link
4928 errors. Archives are handled elsewhere. */
4929 fdh = make_fdh (info, eh);
4930 if (fdh == NULL)
4931 return FALSE;
4932 fdh->elf.ref_regular = 1;
4933 }
bb700d78 4934 }
b31867b6 4935 else
8387904d 4936 {
35b0ce59
AM		 4937 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4938 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4939 if (entry_vis < descr_vis)
4940 fdh->elf.other += entry_vis - descr_vis;
4941 else if (entry_vis > descr_vis)
4942 eh->elf.other += descr_vis - entry_vis;
4943
e87d886e
AM		 4944 if ((fdh->elf.root.type == bfd_link_hash_defined
4945 || fdh->elf.root.type == bfd_link_hash_defweak)
4946 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4947 {
4948 eh->elf.root.type = bfd_link_hash_undefweak;
4949 eh->was_undefined = 1;
4950 htab->twiddled_syms = 1;
4951 }
8387904d 4952 }
99877b66 4953
8387904d
AM		 4954 return TRUE;
4955}
4956
f6c7c3e8
AM		 4957/* Set up opd section info and abiversion for IBFD, and process list
4958 of dot-symbols we made in link_hash_newfunc. */
b3fac117 4959
8387904d 4960static bfd_boolean
f6c7c3e8 4961ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 4962{
99877b66 4963 struct ppc_link_hash_table *htab;
b3fac117 4964 struct ppc_link_hash_entry **p, *eh;
459609d6 4965 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
433817dd 4966
459609d6 4967 if (opd != NULL && opd->size != 0)
b3fac117 4968 {
459609d6
AM		 4969 if (abiversion (ibfd) == 0)
4970 set_abiversion (ibfd, 1);
4971 else if (abiversion (ibfd) == 2)
f6c7c3e8 4972 {
459609d6
AM		 4973 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4974 " version %d\n"),
4975 ibfd, abiversion (ibfd));
4976 bfd_set_error (bfd_error_bad_value);
4977 return FALSE;
f6c7c3e8
AM		 4978 }
4979
459609d6
AM		 4980 if ((ibfd->flags & DYNAMIC) == 0
4981 && (opd->flags & SEC_RELOC) != 0
4982 && opd->reloc_count != 0
4983 && !bfd_is_abs_section (opd->output_section))
b3fac117 4984 {
459609d6
AM		 4985 /* Garbage collection needs some extra help with .opd sections.
4986 We don't want to necessarily keep everything referenced by
4987 relocs in .opd, as that would keep all functions. Instead,
4988 if we reference an .opd symbol (a function descriptor), we
4989 want to keep the function code symbol's section. This is
4990 easy for global symbols, but for local syms we need to keep
4991 information about the associated function section. */
4992 bfd_size_type amt;
4993 asection **opd_sym_map;
4994
4995 amt = opd->size * sizeof (*opd_sym_map) / 8;
4996 opd_sym_map = bfd_zalloc (ibfd, amt);
4997 if (opd_sym_map == NULL)
b3fac117 4998 return FALSE;
459609d6
AM		 4999 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5000 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5001 ppc64_elf_section_data (opd)->sec_type = sec_opd;
b3fac117
AM		 5002 }
5003 }
5004
459609d6
AM		 5005 if (!is_ppc64_elf (info->output_bfd))
5006 return TRUE;
5007 htab = ppc_hash_table (info);
5008 if (htab == NULL)
5009 return FALSE;
5010
5011 /* For input files without an explicit abiversion in e_flags
5012 we should have flagged any with symbol st_other bits set
5013 as ELFv1 and above flagged those with .opd as ELFv2.
5014 Set the output abiversion if not yet set, and for any input
5015 still ambiguous, take its abiversion from the output.
5016 Differences in ABI are reported later. */
5017 if (abiversion (info->output_bfd) == 0)
5018 set_abiversion (info->output_bfd, abiversion (ibfd));
5019 else if (abiversion (ibfd) == 0)
5020 set_abiversion (ibfd, abiversion (info->output_bfd));
5021
5022 p = &htab->dot_syms;
5023 while ((eh = *p) != NULL)
5024 {
5025 *p = NULL;
5026 if (&eh->elf == htab->elf.hgot)
5027 ;
5028 else if (htab->elf.hgot == NULL
5029 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5030 htab->elf.hgot = &eh->elf;
5031 else if (!add_symbol_adjust (eh, info))
5032 return FALSE;
5033 p = &eh->u.next_dot_sym;
5034 }
5035
b3fac117
AM		 5036 /* Clear the list for non-ppc64 input files. */
5037 p = &htab->dot_syms;
5038 while ((eh = *p) != NULL)
5039 {
5040 *p = NULL;
5041 p = &eh->u.next_dot_sym;
5042 }
99877b66
AM		 5043
5044 /* We need to fix the undefs list for any syms we have twiddled to
5045 undef_weak. */
5046 if (htab->twiddled_syms)
5047 {
77cfaee6 5048 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5049 htab->twiddled_syms = 0;
5050 }
b3fac117 5051 return TRUE;
8387904d
AM		 5052}
5053
97fed1c9
JJ		 5054/* Undo hash table changes when an --as-needed input file is determined
5055 not to be needed. */
5056
5057static bfd_boolean
e5034e59
AM		 5058ppc64_elf_notice_as_needed (bfd *ibfd,
5059 struct bfd_link_info *info,
5060 enum notice_asneeded_action act)
97fed1c9 5061{
e5034e59
AM		 5062 if (act == notice_not_needed)
5063 {
5064 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5065
e5034e59
AM		 5066 if (htab == NULL)
5067 return FALSE;
4dfe6ac6 5068
e5034e59
AM		 5069 htab->dot_syms = NULL;
5070 }
5071 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5072}
5073
aa374f67
AM		 5074/* If --just-symbols against a final linked binary, then assume we need
5075 toc adjusting stubs when calling functions defined there. */
5076
5077static void
5078ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5079{
5080 if ((sec->flags & SEC_CODE) != 0
5081 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5082 && is_ppc64_elf (sec->owner))
5083 {
2c3f079f
AM		 5084 if (abiversion (sec->owner) >= 2
5085 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5086 sec->has_toc_reloc = 1;
5087 }
5088 _bfd_elf_link_just_syms (sec, info);
5089}
5090
e054468f 5091static struct plt_entry **
4ce794b7
AM		 5092update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5093 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5094{
5095 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5096 struct plt_entry **local_plt;
f961d9dd 5097 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5098
5099 if (local_got_ents == NULL)
5100 {
5101 bfd_size_type size = symtab_hdr->sh_info;
5102
e054468f
AM		 5103 size *= (sizeof (*local_got_ents)
5104 + sizeof (*local_plt)
5105 + sizeof (*local_got_tls_masks));
4ce794b7 5106 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5107 if (local_got_ents == NULL)
e054468f 5108 return NULL;
411e1bfb
AM		 5109 elf_local_got_ents (abfd) = local_got_ents;
5110 }
5111
e054468f 5112 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5113 {
5114 struct got_entry *ent;
5115
5116 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5117 if (ent->addend == r_addend
5118 && ent->owner == abfd
5119 && ent->tls_type == tls_type)
411e1bfb
AM		 5120 break;
5121 if (ent == NULL)
5122 {
5123 bfd_size_type amt = sizeof (*ent);
4ce794b7 5124 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5125 if (ent == NULL)
5126 return FALSE;
5127 ent->next = local_got_ents[r_symndx];
5128 ent->addend = r_addend;
e717da7e 5129 ent->owner = abfd;
411e1bfb 5130 ent->tls_type = tls_type;
927be08e 5131 ent->is_indirect = FALSE;
411e1bfb
AM		 5132 ent->got.refcount = 0;
5133 local_got_ents[r_symndx] = ent;
5134 }
5135 ent->got.refcount += 1;
5136 }
5137
e054468f 5138 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5139 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5140 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5141
5142 return local_plt + r_symndx;
65f38f15
AM		 5143}
5144
411e1bfb 5145static bfd_boolean
e054468f 5146update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5147{
411e1bfb 5148 struct plt_entry *ent;
1e2f5b6e 5149
e054468f 5150 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5151 if (ent->addend == addend)
5152 break;
5153 if (ent == NULL)
1e2f5b6e 5154 {
411e1bfb 5155 bfd_size_type amt = sizeof (*ent);
4ce794b7 5156 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5157 if (ent == NULL)
5158 return FALSE;
e054468f 5159 ent->next = *plist;
411e1bfb
AM		 5160 ent->addend = addend;
5161 ent->plt.refcount = 0;
e054468f 5162 *plist = ent;
1e2f5b6e 5163 }
411e1bfb 5164 ent->plt.refcount += 1;
b34976b6 5165 return TRUE;
1e2f5b6e
AM		 5166}
5167
e054468f
AM		 5168static bfd_boolean
5169is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5170{
5171 return (r_type == R_PPC64_REL24
5172 || r_type == R_PPC64_REL14
5173 || r_type == R_PPC64_REL14_BRTAKEN
5174 || r_type == R_PPC64_REL14_BRNTAKEN
5175 || r_type == R_PPC64_ADDR24
5176 || r_type == R_PPC64_ADDR14
5177 || r_type == R_PPC64_ADDR14_BRTAKEN
5178 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5179}
5180
5bd4f169 5181/* Look through the relocs for a section during the first phase, and
65f38f15 5182 calculate needed space in the global offset table, procedure
5d1634d7 5183 linkage table, and dynamic reloc sections. */
5bd4f169 5184
b34976b6 5185static bfd_boolean
4ce794b7
AM		 5186ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5187 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5188{
65f38f15 5189 struct ppc_link_hash_table *htab;
5bd4f169 5190 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5191 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5192 const Elf_Internal_Rela *rel;
5193 const Elf_Internal_Rela *rel_end;
5bd4f169 5194 asection *sreloc;
1e2f5b6e 5195 asection **opd_sym_map;
3a71aa26 5196 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5197
1049f94e 5198 if (info->relocatable)
b34976b6 5199 return TRUE;
5bd4f169 5200
680a3378
AM		 5201 /* Don't do anything special with non-loaded, non-alloced sections.
5202 In particular, any relocs in such sections should not affect GOT
5203 and PLT reference counting (ie. we don't allow them to create GOT
5204 or PLT entries), there's no possibility or desire to optimize TLS
5205 relocs, and there's not much point in propagating relocs to shared
5206 libs that the dynamic linker won't relocate. */
5207 if ((sec->flags & SEC_ALLOC) == 0)
5208 return TRUE;
5209
0c8d6e5c 5210 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5211
65f38f15 5212 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5213 if (htab == NULL)
5214 return FALSE;
5215
3a71aa26
AM		 5216 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5217 FALSE, FALSE, TRUE);
5218 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5219 FALSE, FALSE, TRUE);
0ffa91dd 5220 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5221 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5222 sreloc = NULL;
1e2f5b6e 5223 opd_sym_map = NULL;
f6c7c3e8
AM		 5224 if (ppc64_elf_section_data (sec) != NULL
5225 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5226 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5227
5228 rel_end = relocs + sec->reloc_count;
5229 for (rel = relocs; rel < rel_end; rel++)
5230 {
5231 unsigned long r_symndx;
5232 struct elf_link_hash_entry *h;
04c9666a 5233 enum elf_ppc64_reloc_type r_type;
727fc41e 5234 int tls_type;
7c8fe5c4 5235 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 5236 struct plt_entry **ifunc;
5bd4f169
AM		 5237
5238 r_symndx = ELF64_R_SYM (rel->r_info);
5239 if (r_symndx < symtab_hdr->sh_info)
5240 h = NULL;
5241 else
973a3492
L		 5242 {
5243 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5244 h = elf_follow_link (h);
81fbe831
AM		 5245
5246 /* PR15323, ref flags aren't set for references in the same
5247 object. */
5248 h->root.non_ir_ref = 1;
1c865ab2
AM		 5249
5250 if (h == htab->elf.hgot)
5251 sec->has_toc_reloc = 1;
973a3492 5252 }
5bd4f169 5253
727fc41e 5254 tls_type = 0;
e054468f 5255 ifunc = NULL;
25f23106
AM		 5256 if (h != NULL)
5257 {
5258 if (h->type == STT_GNU_IFUNC)
5259 {
5260 h->needs_plt = 1;
5261 ifunc = &h->plt.plist;
5262 }
5263 }
5264 else
5265 {
5266 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5267 abfd, r_symndx);
5268 if (isym == NULL)
5269 return FALSE;
5270
5271 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5272 {
5273 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5274 rel->r_addend, PLT_IFUNC);
5275 if (ifunc == NULL)
5276 return FALSE;
5277 }
5278 }
4ce794b7 5279 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM		 5280 if (is_branch_reloc (r_type))
5281 {
5282 if (h != NULL && (h == tga || h == dottga))
5283 {
5284 if (rel != relocs
5285 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5286 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5287 /* We have a new-style __tls_get_addr call with a marker
5288 reloc. */
5289 ;
5290 else
5291 /* Mark this section as having an old-style call. */
5292 sec->has_tls_get_addr_call = 1;
5293 }
727fc41e 5294
e054468f 5295 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM		 5296 if (ifunc != NULL
5297 && !update_plt_info (abfd, ifunc, rel->r_addend))
5298 return FALSE;
5299 }
727fc41e 5300
a33d1f77 5301 switch (r_type)
5bd4f169 5302 {
727fc41e
AM		 5303 case R_PPC64_TLSGD:
5304 case R_PPC64_TLSLD:
5305 /* These special tls relocs tie a call to __tls_get_addr with
5306 its parameter symbol. */
5307 break;
5308
411e1bfb
AM		 5309 case R_PPC64_GOT_TLSLD16:
5310 case R_PPC64_GOT_TLSLD16_LO:
5311 case R_PPC64_GOT_TLSLD16_HI:
5312 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5313 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5314 goto dogottls;
5315
5316 case R_PPC64_GOT_TLSGD16:
5317 case R_PPC64_GOT_TLSGD16_LO:
5318 case R_PPC64_GOT_TLSGD16_HI:
5319 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5320 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5321 goto dogottls;
5322
5323 case R_PPC64_GOT_TPREL16_DS:
5324 case R_PPC64_GOT_TPREL16_LO_DS:
5325 case R_PPC64_GOT_TPREL16_HI:
5326 case R_PPC64_GOT_TPREL16_HA:
afb93314 5327 if (info->shared)
411e1bfb
AM		 5328 info->flags |= DF_STATIC_TLS;
5329 tls_type = TLS_TLS | TLS_TPREL;
5330 goto dogottls;
5331
5332 case R_PPC64_GOT_DTPREL16_DS:
5333 case R_PPC64_GOT_DTPREL16_LO_DS:
5334 case R_PPC64_GOT_DTPREL16_HI:
5335 case R_PPC64_GOT_DTPREL16_HA:
5336 tls_type = TLS_TLS | TLS_DTPREL;
5337 dogottls:
5338 sec->has_tls_reloc = 1;
5339 /* Fall thru */
5340
5bd4f169 5341 case R_PPC64_GOT16:
5bd4f169 5342 case R_PPC64_GOT16_DS:
65f38f15
AM		 5343 case R_PPC64_GOT16_HA:
5344 case R_PPC64_GOT16_HI:
5345 case R_PPC64_GOT16_LO:
5bd4f169 5346 case R_PPC64_GOT16_LO_DS:
65f38f15 5347 /* This symbol requires a global offset table entry. */
4c52953f 5348 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5349 if (r_type == R_PPC64_GOT_TLSLD16
5350 || r_type == R_PPC64_GOT_TLSGD16
5351 || r_type == R_PPC64_GOT_TPREL16_DS
5352 || r_type == R_PPC64_GOT_DTPREL16_DS
5353 || r_type == R_PPC64_GOT16
5354 || r_type == R_PPC64_GOT16_DS)
5355 {
5356 htab->do_multi_toc = 1;
d77c8a4b 5357 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5358 }
5359
e717da7e
AM		 5360 if (ppc64_elf_tdata (abfd)->got == NULL
5361 && !create_got_section (abfd, info))
b34976b6 5362 return FALSE;
5bd4f169
AM		 5363
5364 if (h != NULL)
5365 {
411e1bfb
AM		 5366 struct ppc_link_hash_entry *eh;
5367 struct got_entry *ent;
65f38f15 5368
411e1bfb
AM		 5369 eh = (struct ppc_link_hash_entry *) h;
5370 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5371 if (ent->addend == rel->r_addend
e717da7e 5372 && ent->owner == abfd
411e1bfb
AM		 5373 && ent->tls_type == tls_type)
5374 break;
5375 if (ent == NULL)
5bd4f169 5376 {
411e1bfb 5377 bfd_size_type amt = sizeof (*ent);
4ce794b7 5378 ent = bfd_alloc (abfd, amt);
411e1bfb 5379 if (ent == NULL)
b34976b6 5380 return FALSE;
411e1bfb
AM		 5381 ent->next = eh->elf.got.glist;
5382 ent->addend = rel->r_addend;
e717da7e 5383 ent->owner = abfd;
411e1bfb 5384 ent->tls_type = tls_type;
927be08e 5385 ent->is_indirect = FALSE;
411e1bfb
AM		 5386 ent->got.refcount = 0;
5387 eh->elf.got.glist = ent;
5bd4f169 5388 }
411e1bfb 5389 ent->got.refcount += 1;
e7b938ca 5390 eh->tls_mask |= tls_type;
5bd4f169 5391 }
411e1bfb
AM		 5392 else
5393 /* This is a global offset table entry for a local symbol. */
5394 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5395 rel->r_addend, tls_type))
5396 return FALSE;
a345bc8d
AM		 5397
5398 /* We may also need a plt entry if the symbol turns out to be
5399 an ifunc. */
f6c7c3e8 5400 if (h != NULL && !info->shared && abiversion (abfd) != 1)
a345bc8d
AM		 5401 {
5402 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5403 return FALSE;
5404 }
5bd4f169
AM		 5405 break;
5406
5bd4f169 5407 case R_PPC64_PLT16_HA:
65f38f15
AM		 5408 case R_PPC64_PLT16_HI:
5409 case R_PPC64_PLT16_LO:
5410 case R_PPC64_PLT32:
5411 case R_PPC64_PLT64:
5bd4f169 5412 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 5413 actually build the entry in adjust_dynamic_symbol,
5414 because this might be a case of linking PIC code without
5415 linking in any dynamic objects, in which case we don't
5416 need to generate a procedure linkage table after all. */
5bd4f169
AM		 5417 if (h == NULL)
5418 {
5419 /* It does not make sense to have a procedure linkage
3fad3c7c 5420 table entry for a local symbol. */
5bd4f169 5421 bfd_set_error (bfd_error_bad_value);
b34976b6 5422 return FALSE;
5bd4f169 5423 }
411e1bfb 5424 else
e054468f
AM		 5425 {
5426 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5427 return FALSE;
5428 h->needs_plt = 1;
5429 if (h->root.root.string[0] == '.'
5430 && h->root.root.string[1] != '\0')
5431 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5432 }
5bd4f169
AM		 5433 break;
5434
5435 /* The following relocations don't need to propagate the
5436 relocation if linking a shared object since they are
5437 section relative. */
5438 case R_PPC64_SECTOFF:
5439 case R_PPC64_SECTOFF_LO:
5440 case R_PPC64_SECTOFF_HI:
5441 case R_PPC64_SECTOFF_HA:
5442 case R_PPC64_SECTOFF_DS:
5443 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5444 case R_PPC64_DTPREL16:
5445 case R_PPC64_DTPREL16_LO:
5446 case R_PPC64_DTPREL16_HI:
5447 case R_PPC64_DTPREL16_HA:
5448 case R_PPC64_DTPREL16_DS:
5449 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5450 case R_PPC64_DTPREL16_HIGH:
5451 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5452 case R_PPC64_DTPREL16_HIGHER:
5453 case R_PPC64_DTPREL16_HIGHERA:
5454 case R_PPC64_DTPREL16_HIGHEST:
5455 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5456 break;
5457
ad8e1ba5 5458 /* Nor do these. */
25f23106
AM		 5459 case R_PPC64_REL16:
5460 case R_PPC64_REL16_LO:
5461 case R_PPC64_REL16_HI:
5462 case R_PPC64_REL16_HA:
5463 break;
5464
45965137
AM		 5465 /* Not supported as a dynamic relocation. */
5466 case R_PPC64_ADDR64_LOCAL:
5467 if (info->shared)
5468 {
5469 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5470 ppc_howto_init ();
5471 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5472 "in shared libraries and PIEs.\n"),
5473 abfd, sec, rel->r_offset,
5474 ppc64_elf_howto_table[r_type]->name);
5475 bfd_set_error (bfd_error_bad_value);
5476 return FALSE;
5477 }
5478 break;
5479
ad8e1ba5 5480 case R_PPC64_TOC16:
33c0ec9d
AM		 5481 case R_PPC64_TOC16_DS:
5482 htab->do_multi_toc = 1;
d77c8a4b 5483 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM		 5484 case R_PPC64_TOC16_LO:
5485 case R_PPC64_TOC16_HI:
5486 case R_PPC64_TOC16_HA:
ad8e1ba5 5487 case R_PPC64_TOC16_LO_DS:
4c52953f 5488 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5489 break;
5490
5bd4f169
AM		 5491 /* This relocation describes the C++ object vtable hierarchy.
5492 Reconstruct it for later use during GC. */
5493 case R_PPC64_GNU_VTINHERIT:
c152c796 5494 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5495 return FALSE;
5bd4f169
AM		 5496 break;
5497
5498 /* This relocation describes which C++ vtable entries are actually
5499 used. Record for later use during GC. */
5500 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5501 BFD_ASSERT (h != NULL);
5502 if (h != NULL
5503 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5504 return FALSE;
5bd4f169
AM		 5505 break;
5506
721956f4
AM		 5507 case R_PPC64_REL14:
5508 case R_PPC64_REL14_BRTAKEN:
5509 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5510 {
5511 asection *dest = NULL;
5512
5513 /* Heuristic: If jumping outside our section, chances are
5514 we are going to need a stub. */
5515 if (h != NULL)
5516 {
5517 /* If the sym is weak it may be overridden later, so
5518 don't assume we know where a weak sym lives. */
5519 if (h->root.type == bfd_link_hash_defined)
5520 dest = h->root.u.def.section;
5521 }
5522 else
87d72d41
AM		 5523 {
5524 Elf_Internal_Sym *isym;
5525
5526 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5527 abfd, r_symndx);
5528 if (isym == NULL)
5529 return FALSE;
5530
5531 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5532 }
5533
220c76dd 5534 if (dest != sec)
7c8fe5c4 5535 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5536 }
721956f4
AM		 5537 /* Fall through. */
5538
5d1634d7 5539 case R_PPC64_REL24:
e054468f 5540 if (h != NULL && ifunc == NULL)
5d1634d7
AM		 5541 {
5542 /* We may need a .plt entry if the function this reloc
5543 refers to is in a shared lib. */
e054468f 5544 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5545 return FALSE;
e054468f
AM		 5546 h->needs_plt = 1;
5547 if (h->root.root.string[0] == '.'
5548 && h->root.root.string[1] != '\0')
5549 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5550 if (h == tga || h == dottga)
411e1bfb 5551 sec->has_tls_reloc = 1;
411e1bfb
AM		 5552 }
5553 break;
5554
5555 case R_PPC64_TPREL64:
5556 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
afb93314 5557 if (info->shared)
411e1bfb
AM		 5558 info->flags |= DF_STATIC_TLS;
5559 goto dotlstoc;
5560
5561 case R_PPC64_DTPMOD64:
5562 if (rel + 1 < rel_end
5563 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5564 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5565 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5566 else
951fd09b 5567 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5568 goto dotlstoc;
5569
5570 case R_PPC64_DTPREL64:
5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5572 if (rel != relocs
5573 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5574 && rel[-1].r_offset == rel->r_offset - 8)
5575 /* This is the second reloc of a dtpmod, dtprel pair.
5576 Don't mark with TLS_DTPREL. */
5577 goto dodyn;
5578
5579 dotlstoc:
5580 sec->has_tls_reloc = 1;
5581 if (h != NULL)
5582 {
5583 struct ppc_link_hash_entry *eh;
5584 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5585 eh->tls_mask |= tls_type;
411e1bfb
AM		 5586 }
5587 else
5588 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5589 rel->r_addend, tls_type))
5590 return FALSE;
5591
7c8fe5c4
AM		 5592 ppc64_sec = ppc64_elf_section_data (sec);
5593 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5594 {
3a71aa26
AM		 5595 bfd_size_type amt;
5596
e7b938ca 5597 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5598 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5599 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5600 if (ppc64_sec->u.toc.symndx == NULL)
5601 return FALSE;
5602 amt = sec->size * sizeof (bfd_vma) / 8;
5603 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5604 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5605 return FALSE;
7c8fe5c4
AM		 5606 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5607 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5608 }
5609 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5610 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5611 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5612
5613 /* Mark the second slot of a GD or LD entry.
5614 -1 to indicate GD and -2 to indicate LD. */
5615 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5616 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5617 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5618 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5619 goto dodyn;
5620
5621 case R_PPC64_TPREL16:
5622 case R_PPC64_TPREL16_LO:
5623 case R_PPC64_TPREL16_HI:
5624 case R_PPC64_TPREL16_HA:
5625 case R_PPC64_TPREL16_DS:
5626 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5627 case R_PPC64_TPREL16_HIGH:
5628 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5629 case R_PPC64_TPREL16_HIGHER:
5630 case R_PPC64_TPREL16_HIGHERA:
5631 case R_PPC64_TPREL16_HIGHEST:
5632 case R_PPC64_TPREL16_HIGHESTA:
5633 if (info->shared)
5634 {
afb93314 5635 info->flags |= DF_STATIC_TLS;
411e1bfb 5636 goto dodyn;
5d1634d7
AM		 5637 }
5638 break;
5639
e86ce104 5640 case R_PPC64_ADDR64:
1e2f5b6e 5641 if (opd_sym_map != NULL
1e2f5b6e 5642 && rel + 1 < rel_end
4ce794b7 5643 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5644 {
8387904d
AM		 5645 if (h != NULL)
5646 {
5647 if (h->root.root.string[0] == '.'
5648 && h->root.root.string[1] != 0
b31867b6 5649 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5650 ;
5651 else
5652 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5653 }
5654 else
5655 {
5656 asection *s;
87d72d41 5657 Elf_Internal_Sym *isym;
1e2f5b6e 5658
87d72d41
AM		 5659 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5660 abfd, r_symndx);
5661 if (isym == NULL)
8387904d 5662 return FALSE;
87d72d41
AM		 5663
5664 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5665 if (s != NULL && s != sec)
3f764659 5666 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5667 }
1e2f5b6e 5668 }
e86ce104
AM		 5669 /* Fall through. */
5670
65f38f15
AM		 5671 case R_PPC64_ADDR16:
5672 case R_PPC64_ADDR16_DS:
5673 case R_PPC64_ADDR16_HA:
5674 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5675 case R_PPC64_ADDR16_HIGH:
5676 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5677 case R_PPC64_ADDR16_HIGHER:
5678 case R_PPC64_ADDR16_HIGHERA:
5679 case R_PPC64_ADDR16_HIGHEST:
5680 case R_PPC64_ADDR16_HIGHESTA:
5681 case R_PPC64_ADDR16_LO:
5682 case R_PPC64_ADDR16_LO_DS:
f6c7c3e8 5683 if (h != NULL && !info->shared && abiversion (abfd) != 1
a345bc8d
AM		 5684 && rel->r_addend == 0)
5685 {
5686 /* We may need a .plt entry if this reloc refers to a
5687 function in a shared lib. */
5688 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5689 return FALSE;
5690 h->pointer_equality_needed = 1;
5691 }
5692 /* Fall through. */
5693
5694 case R_PPC64_REL30:
5695 case R_PPC64_REL32:
5696 case R_PPC64_REL64:
5697 case R_PPC64_ADDR14:
5698 case R_PPC64_ADDR14_BRNTAKEN:
5699 case R_PPC64_ADDR14_BRTAKEN:
65f38f15 5700 case R_PPC64_ADDR24:
65f38f15 5701 case R_PPC64_ADDR32:
65f38f15
AM		 5702 case R_PPC64_UADDR16:
5703 case R_PPC64_UADDR32:
5704 case R_PPC64_UADDR64:
5bd4f169 5705 case R_PPC64_TOC:
81848ca0
AM		 5706 if (h != NULL && !info->shared)
5707 /* We may need a copy reloc. */
f5385ebf 5708 h->non_got_ref = 1;
81848ca0 5709
41bd81ab 5710 /* Don't propagate .opd relocs. */
1e2f5b6e 5711 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5712 break;
e86ce104 5713
65f38f15
AM		 5714 /* If we are creating a shared library, and this is a reloc
5715 against a global symbol, or a non PC relative reloc
5716 against a local symbol, then we need to copy the reloc
5717 into the shared library. However, if we are linking with
5718 -Bsymbolic, we do not need to copy a reloc against a
5719 global symbol which is defined in an object we are
5720 including in the link (i.e., DEF_REGULAR is set). At
5721 this point we have not seen all the input files, so it is
5722 possible that DEF_REGULAR is not set now but will be set
5723 later (it is never cleared). In case of a weak definition,
5724 DEF_REGULAR may be cleared later by a strong definition in
5725 a shared library. We account for that possibility below by
f4656909 5726 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5727 table entry. A similar situation occurs when creating
5728 shared libraries and symbol visibility changes render the
5729 symbol local.
5730
5731 If on the other hand, we are creating an executable, we
5732 may need to keep relocations for symbols satisfied by a
5733 dynamic library if we manage to avoid copy relocs for the
5734 symbol. */
411e1bfb 5735 dodyn:
65f38f15 5736 if ((info->shared
1d483afe 5737 && (must_be_dyn_reloc (info, r_type)
65f38f15 5738 || (h != NULL
198f1157 5739 && (!SYMBOLIC_BIND (info, h)
65f38f15 5740 || h->root.type == bfd_link_hash_defweak
f5385ebf 5741 || !h->def_regular))))
f4656909
AM		 5742 || (ELIMINATE_COPY_RELOCS
5743 && !info->shared
65f38f15
AM		 5744 && h != NULL
5745 && (h->root.type == bfd_link_hash_defweak
25f23106
AM		 5746 || !h->def_regular))
5747 || (!info->shared
5748 && ifunc != NULL))
5bd4f169 5749 {
65f38f15
AM		 5750 /* We must copy these reloc types into the output file.
5751 Create a reloc section in dynobj and make room for
5752 this reloc. */
5bd4f169
AM		 5753 if (sreloc == NULL)
5754 {
83bac4b0
NC		 5755 sreloc = _bfd_elf_make_dynamic_reloc_section
5756 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5757
5bd4f169 5758 if (sreloc == NULL)
83bac4b0 5759 return FALSE;
5bd4f169
AM		 5760 }
5761
65f38f15
AM		 5762 /* If this is a global symbol, we count the number of
5763 relocations we need for this symbol. */
5764 if (h != NULL)
5765 {
19e08130
AM		 5766 struct elf_dyn_relocs *p;
5767 struct elf_dyn_relocs **head;
5768
ec338859 5769 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5770 p = *head;
5771 if (p == NULL || p->sec != sec)
5772 {
5773 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5774 if (p == NULL)
5775 return FALSE;
5776 p->next = *head;
5777 *head = p;
5778 p->sec = sec;
5779 p->count = 0;
5780 p->pc_count = 0;
5781 }
5782 p->count += 1;
5783 if (!must_be_dyn_reloc (info, r_type))
5784 p->pc_count += 1;
65f38f15
AM		 5785 }
5786 else
5787 {
ec338859
AM		 5788 /* Track dynamic relocs needed for local syms too.
5789 We really need local syms available to do this
5790 easily. Oh well. */
19e08130
AM		 5791 struct ppc_dyn_relocs *p;
5792 struct ppc_dyn_relocs **head;
5793 bfd_boolean is_ifunc;
ec338859 5794 asection *s;
6edfbbad 5795 void *vpp;
87d72d41 5796 Elf_Internal_Sym *isym;
6edfbbad 5797
87d72d41
AM		 5798 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5799 abfd, r_symndx);
5800 if (isym == NULL)
b34976b6 5801 return FALSE;
ec338859 5802
87d72d41
AM		 5803 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5804 if (s == NULL)
5805 s = sec;
5806
6edfbbad 5807 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5808 head = (struct ppc_dyn_relocs **) vpp;
5809 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5810 p = *head;
5811 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5812 p = p->next;
5813 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5814 {
5815 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5816 if (p == NULL)
5817 return FALSE;
5818 p->next = *head;
5819 *head = p;
5820 p->sec = sec;
5821 p->ifunc = is_ifunc;
5822 p->count = 0;
5823 }
5824 p->count += 1;
ec338859 5825 }
65f38f15 5826 }
5bd4f169 5827 break;
65f38f15
AM		 5828
5829 default:
96e0dda4 5830 break;
5bd4f169
AM		 5831 }
5832 }
5833
b34976b6 5834 return TRUE;
5bd4f169
AM		 5835}
5836
ee67d69a
AM		 5837/* Merge backend specific data from an object file to the output
5838 object file when linking. */
5839
5840static bfd_boolean
5841ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5842{
5843 unsigned long iflags, oflags;
5844
5845 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5846 return TRUE;
5847
5848 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5849 return TRUE;
5850
5851 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5852 return FALSE;
5853
5854 iflags = elf_elfheader (ibfd)->e_flags;
5855 oflags = elf_elfheader (obfd)->e_flags;
5856
f6c7c3e8 5857 if (iflags & ~EF_PPC64_ABI)
ee67d69a
AM		 5858 {
5859 (*_bfd_error_handler)
5860 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5861 bfd_set_error (bfd_error_bad_value);
5862 return FALSE;
5863 }
f6c7c3e8 5864 else if (iflags != oflags && iflags != 0)
ee67d69a
AM		 5865 {
5866 (*_bfd_error_handler)
5867 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5868 ibfd, iflags, oflags);
5869 bfd_set_error (bfd_error_bad_value);
5870 return FALSE;
5871 }
5872
5873 /* Merge Tag_compatibility attributes and any common GNU ones. */
5874 _bfd_elf_merge_object_attributes (ibfd, obfd);
5875
5876 return TRUE;
5877}
5878
5879static bfd_boolean
5880ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5881{
5882 /* Print normal ELF private data. */
5883 _bfd_elf_print_private_bfd_data (abfd, ptr);
5884
5885 if (elf_elfheader (abfd)->e_flags != 0)
5886 {
5887 FILE *file = ptr;
5888
5889 /* xgettext:c-format */
5890 fprintf (file, _("private flags = 0x%lx:"),
5891 elf_elfheader (abfd)->e_flags);
5892
5893 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5894 fprintf (file, _(" [abiv%ld]"),
5895 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5896 fputc ('\n', file);
5897 }
5898
5899 return TRUE;
5900}
5901
8387904d
AM		 5902/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5903 of the code entry point, and its section. */
5904
5905static bfd_vma
5906opd_entry_value (asection *opd_sec,
5907 bfd_vma offset,
5908 asection **code_sec,
aef36ac1
AM		 5909 bfd_vma *code_off,
5910 bfd_boolean in_code_sec)
8387904d
AM		 5911{
5912 bfd *opd_bfd = opd_sec->owner;
8860955f 5913 Elf_Internal_Rela *relocs;
8387904d 5914 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5915 bfd_vma val;
8387904d 5916
9f296da3
AM		 5917 /* No relocs implies we are linking a --just-symbols object, or looking
5918 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 5919 if (opd_sec->reloc_count == 0)
5920 {
729eabd5 5921 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 5922
729eabd5
AM		 5923 if (contents == NULL)
5924 {
5925 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5926 return (bfd_vma) -1;
5927 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5928 }
ee1e4ede 5929
729eabd5 5930 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 5931 if (code_sec != NULL)
5932 {
5933 asection *sec, *likely = NULL;
ee1e4ede 5934
aef36ac1 5935 if (in_code_sec)
4b85d634 5936 {
aef36ac1
AM		 5937 sec = *code_sec;
5938 if (sec->vma <= val
5939 && val < sec->vma + sec->size)
5940 likely = sec;
5941 else
5942 val = -1;
5943 }
5944 else
5945 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5946 if (sec->vma <= val
5947 && (sec->flags & SEC_LOAD) != 0
5948 && (sec->flags & SEC_ALLOC) != 0)
5949 likely = sec;
5950 if (likely != NULL)
5951 {
5952 *code_sec = likely;
5953 if (code_off != NULL)
5954 *code_off = val - likely->vma;
4b85d634
AM		 5955 }
5956 }
aef36ac1 5957 return val;
4b85d634
AM		 5958 }
5959
0c8d6e5c 5960 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5961
729eabd5 5962 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 5963 if (relocs == NULL)
5964 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5965
8387904d 5966 /* Go find the opd reloc at the sym address. */
8860955f 5967 lo = relocs;
8387904d
AM		 5968 BFD_ASSERT (lo != NULL);
5969 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5970 val = (bfd_vma) -1;
8387904d
AM		 5971 while (lo < hi)
5972 {
5973 look = lo + (hi - lo) / 2;
5974 if (look->r_offset < offset)
5975 lo = look + 1;
5976 else if (look->r_offset > offset)
5977 hi = look;
5978 else
5979 {
0ffa91dd
NC		 5980 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5981
8387904d
AM		 5982 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5983 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5984 {
5985 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5986 asection *sec;
5987
62599110
AM		 5988 if (symndx < symtab_hdr->sh_info
5989 || elf_sym_hashes (opd_bfd) == NULL)
8387904d
AM		 5990 {
5991 Elf_Internal_Sym *sym;
5992
5993 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5994 if (sym == NULL)
5995 {
62599110
AM		 5996 size_t symcnt = symtab_hdr->sh_info;
5997 if (elf_sym_hashes (opd_bfd) == NULL)
5998 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5999 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
8387904d
AM		 6000 0, NULL, NULL, NULL);
6001 if (sym == NULL)
645ea6a9 6002 break;
8387904d
AM		 6003 symtab_hdr->contents = (bfd_byte *) sym;
6004 }
6005
6006 sym += symndx;
6007 val = sym->st_value;
cb33740c 6008 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM		 6009 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6010 }
6011 else
6012 {
6013 struct elf_link_hash_entry **sym_hashes;
6014 struct elf_link_hash_entry *rh;
6015
6016 sym_hashes = elf_sym_hashes (opd_bfd);
6017 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6018 if (rh != NULL)
6019 {
6020 rh = elf_follow_link (rh);
6021 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6022 || rh->root.type == bfd_link_hash_defweak);
6023 val = rh->root.u.def.value;
6024 sec = rh->root.u.def.section;
6025 }
6026 else
6027 {
6028 /* Handle the odd case where we can be called
6029 during bfd_elf_link_add_symbols before the
6030 symbol hashes have been fully populated. */
6031 Elf_Internal_Sym *sym;
6032
6033 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6034 symndx, NULL, NULL, NULL);
6035 if (sym == NULL)
6036 break;
6037
6038 val = sym->st_value;
6039 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6040 free (sym);
6041 }
8387904d
AM		 6042 }
6043 val += look->r_addend;
6044 if (code_off != NULL)
6045 *code_off = val;
6046 if (code_sec != NULL)
aef36ac1
AM		 6047 {
6048 if (in_code_sec && *code_sec != sec)
6049 return -1;
6050 else
6051 *code_sec = sec;
6052 }
8387904d
AM		 6053 if (sec != NULL && sec->output_section != NULL)
6054 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6055 }
6056 break;
6057 }
6058 }
645ea6a9 6059
645ea6a9 6060 return val;
8387904d
AM		 6061}
6062
aef36ac1
AM		 6063/* If the ELF symbol SYM might be a function in SEC, return the
6064 function size and set *CODE_OFF to the function's entry point,
6065 otherwise return zero. */
9f296da3 6066
aef36ac1
AM		 6067static bfd_size_type
6068ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6069 bfd_vma *code_off)
9f296da3 6070{
aef36ac1
AM		 6071 bfd_size_type size;
6072
6073 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6074 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6075 return 0;
6076
6077 size = 0;
6078 if (!(sym->flags & BSF_SYNTHETIC))
6079 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6080
6081 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6082 {
aef36ac1
AM		 6083 if (opd_entry_value (sym->section, sym->value,
6084 &sec, code_off, TRUE) == (bfd_vma) -1)
6085 return 0;
6086 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6087 symbol. This size has nothing to do with the code size of the
6088 function, which is what we're supposed to return, but the
6089 code size isn't available without looking up the dot-sym.
6090 However, doing that would be a waste of time particularly
6091 since elf_find_function will look at the dot-sym anyway.
6092 Now, elf_find_function will keep the largest size of any
6093 function sym found at the code address of interest, so return
6094 1 here to avoid it incorrectly caching a larger function size
6095 for a small function. This does mean we return the wrong
6096 size for a new-ABI function of size 24, but all that does is
6097 disable caching for such functions. */
6098 if (size == 24)
6099 size = 1;
9f296da3 6100 }
aef36ac1
AM		 6101 else
6102 {
6103 if (sym->section != sec)
6104 return 0;
6105 *code_off = sym->value;
6106 }
6107 if (size == 0)
6108 size = 1;
6109 return size;
9f296da3
AM		 6110}
6111
854b41e7
AM		 6112/* Return true if symbol is defined in a regular object file. */
6113
6114static bfd_boolean
6115is_static_defined (struct elf_link_hash_entry *h)
6116{
6117 return ((h->root.type == bfd_link_hash_defined
6118 || h->root.type == bfd_link_hash_defweak)
6119 && h->root.u.def.section != NULL
6120 && h->root.u.def.section->output_section != NULL);
6121}
6122
b31867b6
AM		 6123/* If FDH is a function descriptor symbol, return the associated code
6124 entry symbol if it is defined. Return NULL otherwise. */
6125
6126static struct ppc_link_hash_entry *
6127defined_code_entry (struct ppc_link_hash_entry *fdh)
6128{
6129 if (fdh->is_func_descriptor)
6130 {
6131 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6132 if (fh->elf.root.type == bfd_link_hash_defined
6133 || fh->elf.root.type == bfd_link_hash_defweak)
6134 return fh;
6135 }
6136 return NULL;
6137}
6138
6139/* If FH is a function code entry symbol, return the associated
6140 function descriptor symbol if it is defined. Return NULL otherwise. */
6141
6142static struct ppc_link_hash_entry *
6143defined_func_desc (struct ppc_link_hash_entry *fh)
6144{
6145 if (fh->oh != NULL
6146 && fh->oh->is_func_descriptor)
6147 {
6148 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6149 if (fdh->elf.root.type == bfd_link_hash_defined
6150 || fdh->elf.root.type == bfd_link_hash_defweak)
6151 return fdh;
6152 }
6153 return NULL;
6154}
6155
74f0fb50
AM		 6156/* Mark all our entry sym sections, both opd and code section. */
6157
6158static void
6159ppc64_elf_gc_keep (struct bfd_link_info *info)
6160{
6161 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6162 struct bfd_sym_chain *sym;
6163
4dfe6ac6
NC		 6164 if (htab == NULL)
6165 return;
6166
74f0fb50
AM		 6167 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6168 {
b31867b6 6169 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6170 asection *sec;
6171
6172 eh = (struct ppc_link_hash_entry *)
b31867b6 6173 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6174 if (eh == NULL)
6175 continue;
6176 if (eh->elf.root.type != bfd_link_hash_defined
6177 && eh->elf.root.type != bfd_link_hash_defweak)
6178 continue;
6179
b31867b6
AM		 6180 fh = defined_code_entry (eh);
6181 if (fh != NULL)
74f0fb50 6182 {
b31867b6 6183 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6184 sec->flags |= SEC_KEEP;
6185 }
6186 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6187 && opd_entry_value (eh->elf.root.u.def.section,
6188 eh->elf.root.u.def.value,
aef36ac1 6189 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6190 sec->flags |= SEC_KEEP;
6191
6192 sec = eh->elf.root.u.def.section;
6193 sec->flags |= SEC_KEEP;
6194 }
6195}
6196
64d03ab5
AM		 6197/* Mark sections containing dynamically referenced symbols. When
6198 building shared libraries, we must assume that any visible symbol is
6199 referenced. */
6200
6201static bfd_boolean
6202ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6203{
6204 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6205 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6206 struct ppc_link_hash_entry *fdh;
b407645f 6207 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6208
64d03ab5 6209 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6210 fdh = defined_func_desc (eh);
6211 if (fdh != NULL)
6212 eh = fdh;
64d03ab5
AM		 6213
6214 if ((eh->elf.root.type == bfd_link_hash_defined
6215 || eh->elf.root.type == bfd_link_hash_defweak)
6216 && (eh->elf.ref_dynamic
b407645f 6217 || (eh->elf.def_regular
64d03ab5 6218 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6219 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
b407645f
AM		 6220 && (!info->executable
6221 || info->export_dynamic
6222 || (eh->elf.dynamic
6223 && d != NULL
6224 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6225 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6226 || !bfd_hide_sym_by_version (info->version_info,
6227 eh->elf.root.root.string)))))
64d03ab5
AM		 6228 {
6229 asection *code_sec;
b31867b6 6230 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6231
6232 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6233
6234 /* Function descriptor syms cause the associated
6235 function code sym section to be marked. */
b31867b6
AM		 6236 fh = defined_code_entry (eh);
6237 if (fh != NULL)
6238 {
6239 code_sec = fh->elf.root.u.def.section;
6240 code_sec->flags |= SEC_KEEP;
6241 }
64d03ab5
AM		 6242 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6243 && opd_entry_value (eh->elf.root.u.def.section,
6244 eh->elf.root.u.def.value,
aef36ac1 6245 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6246 code_sec->flags |= SEC_KEEP;
6247 }
6248
6249 return TRUE;
6250}
6251
5bd4f169
AM		 6252/* Return the section that should be marked against GC for a given
6253 relocation. */
6254
6255static asection *
4ce794b7 6256ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6257 struct bfd_link_info *info,
4ce794b7
AM		 6258 Elf_Internal_Rela *rel,
6259 struct elf_link_hash_entry *h,
6260 Elf_Internal_Sym *sym)
5bd4f169 6261{
ccfa59ea
AM		 6262 asection *rsec;
6263
ccfa59ea
AM		 6264 /* Syms return NULL if we're marking .opd, so we avoid marking all
6265 function sections, as all functions are referenced in .opd. */
6266 rsec = NULL;
6267 if (get_opd_info (sec) != NULL)
6268 return rsec;
1e2f5b6e 6269
5bd4f169
AM		 6270 if (h != NULL)
6271 {
04c9666a 6272 enum elf_ppc64_reloc_type r_type;
b31867b6 6273 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6274
4ce794b7 6275 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6276 switch (r_type)
5bd4f169
AM		 6277 {
6278 case R_PPC64_GNU_VTINHERIT:
6279 case R_PPC64_GNU_VTENTRY:
6280 break;
6281
6282 default:
6283 switch (h->root.type)
6284 {
6285 case bfd_link_hash_defined:
6286 case bfd_link_hash_defweak:
ccfa59ea 6287 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6288 fdh = defined_func_desc (eh);
6289 if (fdh != NULL)
6290 eh = fdh;
1e2f5b6e
AM		 6291
6292 /* Function descriptor syms cause the associated
6293 function code sym section to be marked. */
b31867b6
AM		 6294 fh = defined_code_entry (eh);
6295 if (fh != NULL)
ccfa59ea
AM		 6296 {
6297 /* They also mark their opd section. */
74f0fb50 6298 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6299
b31867b6 6300 rsec = fh->elf.root.u.def.section;
ccfa59ea 6301 }
8387904d
AM		 6302 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6303 && opd_entry_value (eh->elf.root.u.def.section,
6304 eh->elf.root.u.def.value,
aef36ac1 6305 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6306 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6307 else
1e2f5b6e
AM		 6308 rsec = h->root.u.def.section;
6309 break;
5bd4f169
AM		 6310
6311 case bfd_link_hash_common:
1e2f5b6e
AM		 6312 rsec = h->root.u.c.p->section;
6313 break;
5bd4f169
AM		 6314
6315 default:
fb34365b 6316 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6317 }
6318 }
6319 }
6320 else
6321 {
74f0fb50 6322 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6323
6324 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6325 opd = get_opd_info (rsec);
6326 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6327 {
74f0fb50 6328 rsec->gc_mark = 1;
ccfa59ea 6329
74f0fb50 6330 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 6331 }
5bd4f169
AM		 6332 }
6333
1e2f5b6e 6334 return rsec;
5bd4f169
AM		 6335}
6336
65f38f15
AM		 6337/* Update the .got, .plt. and dynamic reloc reference counts for the
6338 section being removed. */
5bd4f169 6339
b34976b6 6340static bfd_boolean
4ce794b7
AM		 6341ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6342 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6343{
411e1bfb 6344 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6345 Elf_Internal_Shdr *symtab_hdr;
6346 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6347 struct got_entry **local_got_ents;
5bd4f169 6348 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6349
7dda2462
TG		 6350 if (info->relocatable)
6351 return TRUE;
6352
680a3378
AM		 6353 if ((sec->flags & SEC_ALLOC) == 0)
6354 return TRUE;
6355
ec338859
AM		 6356 elf_section_data (sec)->local_dynrel = NULL;
6357
411e1bfb 6358 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6359 if (htab == NULL)
6360 return FALSE;
6361
0ffa91dd 6362 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6363 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6364 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6365
6366 relend = relocs + sec->reloc_count;
6367 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6368 {
6369 unsigned long r_symndx;
04c9666a 6370 enum elf_ppc64_reloc_type r_type;
58ac9f71 6371 struct elf_link_hash_entry *h = NULL;
f961d9dd 6372 unsigned char tls_type = 0;
5bd4f169 6373
a33d1f77 6374 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6375 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6376 if (r_symndx >= symtab_hdr->sh_info)
6377 {
6378 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6379 struct elf_dyn_relocs **pp;
6380 struct elf_dyn_relocs *p;
58ac9f71
AM		 6381
6382 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6383 h = elf_follow_link (h);
58ac9f71
AM		 6384 eh = (struct ppc_link_hash_entry *) h;
6385
6386 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6387 if (p->sec == sec)
6388 {
6389 /* Everything must go for SEC. */
6390 *pp = p->next;
6391 break;
6392 }
6393 }
6394
e054468f
AM		 6395 if (is_branch_reloc (r_type))
6396 {
6397 struct plt_entry **ifunc = NULL;
6398 if (h != NULL)
6399 {
6400 if (h->type == STT_GNU_IFUNC)
6401 ifunc = &h->plt.plist;
6402 }
6403 else if (local_got_ents != NULL)
6404 {
6405 struct plt_entry **local_plt = (struct plt_entry **)
6406 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 6407 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM		 6408 (local_plt + symtab_hdr->sh_info);
6409 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6410 ifunc = local_plt + r_symndx;
6411 }
6412 if (ifunc != NULL)
6413 {
6414 struct plt_entry *ent;
6415
6416 for (ent = *ifunc; ent != NULL; ent = ent->next)
6417 if (ent->addend == rel->r_addend)
6418 break;
6419 if (ent == NULL)
6420 abort ();
6421 if (ent->plt.refcount > 0)
6422 ent->plt.refcount -= 1;
6423 continue;
6424 }
6425 }
6426
a33d1f77
AM		 6427 switch (r_type)
6428 {
411e1bfb
AM		 6429 case R_PPC64_GOT_TLSLD16:
6430 case R_PPC64_GOT_TLSLD16_LO:
6431 case R_PPC64_GOT_TLSLD16_HI:
6432 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6433 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6434 goto dogot;
6435
6436 case R_PPC64_GOT_TLSGD16:
6437 case R_PPC64_GOT_TLSGD16_LO:
6438 case R_PPC64_GOT_TLSGD16_HI:
6439 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6440 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6441 goto dogot;
6442
6443 case R_PPC64_GOT_TPREL16_DS:
6444 case R_PPC64_GOT_TPREL16_LO_DS:
6445 case R_PPC64_GOT_TPREL16_HI:
6446 case R_PPC64_GOT_TPREL16_HA:
6447 tls_type = TLS_TLS | TLS_TPREL;
6448 goto dogot;
6449
6450 case R_PPC64_GOT_DTPREL16_DS:
6451 case R_PPC64_GOT_DTPREL16_LO_DS:
6452 case R_PPC64_GOT_DTPREL16_HI:
6453 case R_PPC64_GOT_DTPREL16_HA:
6454 tls_type = TLS_TLS | TLS_DTPREL;
6455 goto dogot;
6456
a33d1f77
AM		 6457 case R_PPC64_GOT16:
6458 case R_PPC64_GOT16_DS:
6459 case R_PPC64_GOT16_HA:
6460 case R_PPC64_GOT16_HI:
6461 case R_PPC64_GOT16_LO:
6462 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6463 dogot:
6464 {
6465 struct got_entry *ent;
6466
58ac9f71
AM		 6467 if (h != NULL)
6468 ent = h->got.glist;
411e1bfb
AM		 6469 else
6470 ent = local_got_ents[r_symndx];
6471
6472 for (; ent != NULL; ent = ent->next)
6473 if (ent->addend == rel->r_addend
e717da7e 6474 && ent->owner == abfd
411e1bfb
AM		 6475 && ent->tls_type == tls_type)
6476 break;
6477 if (ent == NULL)
6478 abort ();
6479 if (ent->got.refcount > 0)
6480 ent->got.refcount -= 1;
6481 }
a33d1f77 6482 break;
65f38f15 6483
a33d1f77
AM		 6484 case R_PPC64_PLT16_HA:
6485 case R_PPC64_PLT16_HI:
6486 case R_PPC64_PLT16_LO:
6487 case R_PPC64_PLT32:
6488 case R_PPC64_PLT64:
721956f4
AM		 6489 case R_PPC64_REL14:
6490 case R_PPC64_REL14_BRNTAKEN:
6491 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6492 case R_PPC64_REL24:
58ac9f71 6493 if (h != NULL)
5d1634d7 6494 {
411e1bfb
AM		 6495 struct plt_entry *ent;
6496
411e1bfb
AM		 6497 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6498 if (ent->addend == rel->r_addend)
6499 break;
7c6c1722 6500 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6501 ent->plt.refcount -= 1;
5d1634d7 6502 }
e86ce104 6503 break;
5d1634d7 6504
a33d1f77
AM		 6505 default:
6506 break;
6507 }
6508 }
b34976b6 6509 return TRUE;
5bd4f169
AM		 6510}
6511
deb0e272
AM		 6512/* The maximum size of .sfpr. */
6513#define SFPR_MAX (218*4)
6514
6515struct sfpr_def_parms
6516{
699733f6
AM		 6517 const char name[12];
6518 unsigned char lo, hi;
deb0e272
AM		 6519 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6520 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6521};
6522
6523/* Auto-generate _save*, _rest* functions in .sfpr. */
6524
4dfe6ac6 6525static bfd_boolean
deb0e272
AM		 6526sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6527{
6528 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6529 unsigned int i;
6530 size_t len = strlen (parm->name);
6531 bfd_boolean writing = FALSE;
699733f6 6532 char sym[16];
deb0e272 6533
4dfe6ac6
NC		 6534 if (htab == NULL)
6535 return FALSE;
6536
deb0e272
AM		 6537 memcpy (sym, parm->name, len);
6538 sym[len + 2] = 0;
6539
6540 for (i = parm->lo; i <= parm->hi; i++)
6541 {
6542 struct elf_link_hash_entry *h;
6543
6544 sym[len + 0] = i / 10 + '0';
6545 sym[len + 1] = i % 10 + '0';
6546 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6547 if (h != NULL
f5385ebf 6548 && !h->def_regular)
deb0e272
AM		 6549 {
6550 h->root.type = bfd_link_hash_defined;
6551 h->root.u.def.section = htab->sfpr;
6552 h->root.u.def.value = htab->sfpr->size;
6553 h->type = STT_FUNC;
f5385ebf 6554 h->def_regular = 1;
deb0e272
AM		 6555 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6556 writing = TRUE;
6557 if (htab->sfpr->contents == NULL)
6558 {
6559 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6560 if (htab->sfpr->contents == NULL)
6561 return FALSE;
6562 }
6563 }
6564 if (writing)
6565 {
6566 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6567 if (i != parm->hi)
6568 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6569 else
6570 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6571 htab->sfpr->size = p - htab->sfpr->contents;
6572 }
6573 }
6574
6575 return TRUE;
6576}
6577
6578static bfd_byte *
6579savegpr0 (bfd *abfd, bfd_byte *p, int r)
6580{
6581 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6582 return p + 4;
6583}
6584
6585static bfd_byte *
6586savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6587{
6588 p = savegpr0 (abfd, p, r);
a078d95a 6589 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6590 p = p + 4;
6591 bfd_put_32 (abfd, BLR, p);
6592 return p + 4;
6593}
6594
6595static bfd_byte *
6596restgpr0 (bfd *abfd, bfd_byte *p, int r)
6597{
6598 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6599 return p + 4;
6600}
6601
6602static bfd_byte *
6603restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6604{
a078d95a 6605 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6606 p = p + 4;
6607 p = restgpr0 (abfd, p, r);
6608 bfd_put_32 (abfd, MTLR_R0, p);
6609 p = p + 4;
6610 if (r == 29)
6611 {
6612 p = restgpr0 (abfd, p, 30);
6613 p = restgpr0 (abfd, p, 31);
6614 }
6615 bfd_put_32 (abfd, BLR, p);
6616 return p + 4;
6617}
6618
6619static bfd_byte *
6620savegpr1 (bfd *abfd, bfd_byte *p, int r)
6621{
6622 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6623 return p + 4;
6624}
6625
6626static bfd_byte *
6627savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6628{
6629 p = savegpr1 (abfd, p, r);
6630 bfd_put_32 (abfd, BLR, p);
6631 return p + 4;
6632}
6633
6634static bfd_byte *
6635restgpr1 (bfd *abfd, bfd_byte *p, int r)
6636{
6637 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6638 return p + 4;
6639}
6640
6641static bfd_byte *
6642restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6643{
6644 p = restgpr1 (abfd, p, r);
6645 bfd_put_32 (abfd, BLR, p);
6646 return p + 4;
6647}
6648
6649static bfd_byte *
6650savefpr (bfd *abfd, bfd_byte *p, int r)
6651{
6652 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6653 return p + 4;
6654}
6655
6656static bfd_byte *
6657savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6658{
6659 p = savefpr (abfd, p, r);
a078d95a 6660 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6661 p = p + 4;
6662 bfd_put_32 (abfd, BLR, p);
6663 return p + 4;
6664}
6665
6666static bfd_byte *
6667restfpr (bfd *abfd, bfd_byte *p, int r)
6668{
6669 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6670 return p + 4;
6671}
6672
6673static bfd_byte *
6674restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6675{
a078d95a 6676 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6677 p = p + 4;
6678 p = restfpr (abfd, p, r);
6679 bfd_put_32 (abfd, MTLR_R0, p);
6680 p = p + 4;
6681 if (r == 29)
6682 {
6683 p = restfpr (abfd, p, 30);
6684 p = restfpr (abfd, p, 31);
6685 }
6686 bfd_put_32 (abfd, BLR, p);
6687 return p + 4;
6688}
6689
6690static bfd_byte *
6691savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6692{
6693 p = savefpr (abfd, p, r);
6694 bfd_put_32 (abfd, BLR, p);
6695 return p + 4;
6696}
6697
6698static bfd_byte *
6699restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6700{
6701 p = restfpr (abfd, p, r);
6702 bfd_put_32 (abfd, BLR, p);
6703 return p + 4;
6704}
6705
6706static bfd_byte *
6707savevr (bfd *abfd, bfd_byte *p, int r)
6708{
6709 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6710 p = p + 4;
6711 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6712 return p + 4;
6713}
6714
6715static bfd_byte *
6716savevr_tail (bfd *abfd, bfd_byte *p, int r)
6717{
6718 p = savevr (abfd, p, r);
6719 bfd_put_32 (abfd, BLR, p);
6720 return p + 4;
6721}
6722
6723static bfd_byte *
6724restvr (bfd *abfd, bfd_byte *p, int r)
6725{
6726 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6727 p = p + 4;
6728 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6729 return p + 4;
6730}
6731
6732static bfd_byte *
6733restvr_tail (bfd *abfd, bfd_byte *p, int r)
6734{
6735 p = restvr (abfd, p, r);
6736 bfd_put_32 (abfd, BLR, p);
6737 return p + 4;
6738}
6739
e86ce104
AM		 6740/* Called via elf_link_hash_traverse to transfer dynamic linking
6741 information on function code symbol entries to their corresponding
6742 function descriptor symbol entries. */
deb0e272 6743
b34976b6 6744static bfd_boolean
4ce794b7 6745func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6746{
e86ce104 6747 struct bfd_link_info *info;
65f38f15 6748 struct ppc_link_hash_table *htab;
411e1bfb 6749 struct plt_entry *ent;
50bc7936
AM		 6750 struct ppc_link_hash_entry *fh;
6751 struct ppc_link_hash_entry *fdh;
6752 bfd_boolean force_local;
5bd4f169 6753
50bc7936
AM		 6754 fh = (struct ppc_link_hash_entry *) h;
6755 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6756 return TRUE;
e86ce104 6757
4ce794b7 6758 info = inf;
65f38f15 6759 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6760 if (htab == NULL)
6761 return FALSE;
5bd4f169 6762
c09bdfe5
AM		 6763 /* Resolve undefined references to dot-symbols as the value
6764 in the function descriptor, if we have one in a regular object.
6765 This is to satisfy cases like ".quad .foo". Calls to functions
6766 in dynamic objects are handled elsewhere. */
6767 if (fh->elf.root.type == bfd_link_hash_undefweak
6768 && fh->was_undefined
b31867b6
AM		 6769 && (fdh = defined_func_desc (fh)) != NULL
6770 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6771 && opd_entry_value (fdh->elf.root.u.def.section,
6772 fdh->elf.root.u.def.value,
c09bdfe5 6773 &fh->elf.root.u.def.section,
aef36ac1 6774 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6775 {
b31867b6 6776 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6777 fh->elf.forced_local = 1;
b31867b6
AM		 6778 fh->elf.def_regular = fdh->elf.def_regular;
6779 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6780 }
6781
e86ce104
AM		 6782 /* If this is a function code symbol, transfer dynamic linking
6783 information to the function descriptor symbol. */
50bc7936 6784 if (!fh->is_func)
b34976b6 6785 return TRUE;
e86ce104 6786
50bc7936 6787 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6788 if (ent->plt.refcount > 0)
6789 break;
50bc7936
AM		 6790 if (ent == NULL
6791 || fh->elf.root.root.string[0] != '.'
6792 || fh->elf.root.root.string[1] == '\0')
6793 return TRUE;
5bd4f169 6794
50bc7936
AM		 6795 /* Find the corresponding function descriptor symbol. Create it
6796 as undefined if necessary. */
5bd4f169 6797
b31867b6 6798 fdh = lookup_fdh (fh, htab);
50bc7936 6799 if (fdh == NULL
df131623 6800 && !info->executable
50bc7936
AM		 6801 && (fh->elf.root.type == bfd_link_hash_undefined
6802 || fh->elf.root.type == bfd_link_hash_undefweak))
6803 {
908b32fc 6804 fdh = make_fdh (info, fh);
bb700d78
AM		 6805 if (fdh == NULL)
6806 return FALSE;
50bc7936 6807 }
648cca2c 6808
908b32fc 6809 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 6810 code symbol is strong undefined, make the fake sym the same.
6811 If the function code symbol is defined, then force the fake
6812 descriptor local; We can't support overriding of symbols in a
6813 shared library on a fake descriptor. */
908b32fc
AM		 6814
6815 if (fdh != NULL
6816 && fdh->fake
433817dd 6817 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6818 {
433817dd
AM		 6819 if (fh->elf.root.type == bfd_link_hash_undefined)
6820 {
6821 fdh->elf.root.type = bfd_link_hash_undefined;
6822 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6823 }
6824 else if (fh->elf.root.type == bfd_link_hash_defined
6825 || fh->elf.root.type == bfd_link_hash_defweak)
6826 {
6827 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6828 }
908b32fc
AM		 6829 }
6830
50bc7936 6831 if (fdh != NULL
f5385ebf 6832 && !fdh->elf.forced_local
df131623 6833 && (!info->executable
f5385ebf
AM		 6834 || fdh->elf.def_dynamic
6835 || fdh->elf.ref_dynamic
50bc7936
AM		 6836 || (fdh->elf.root.type == bfd_link_hash_undefweak
6837 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6838 {
6839 if (fdh->elf.dynindx == -1)
c152c796 6840 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6841 return FALSE;
f5385ebf
AM		 6842 fdh->elf.ref_regular |= fh->elf.ref_regular;
6843 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6844 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6845 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6846 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6847 {
40d16e0b 6848 move_plt_plist (fh, fdh);
f5385ebf 6849 fdh->elf.needs_plt = 1;
e86ce104 6850 }
50bc7936 6851 fdh->is_func_descriptor = 1;
34814b9f
AM		 6852 fdh->oh = fh;
6853 fh->oh = fdh;
e86ce104
AM		 6854 }
6855
50bc7936
AM		 6856 /* Now that the info is on the function descriptor, clear the
6857 function code sym info. Any function code syms for which we
6858 don't have a definition in a regular file, we force local.
6859 This prevents a shared library from exporting syms that have
6860 been imported from another library. Function code syms that
6861 are really in the library we must leave global to prevent the
6862 linker dragging in a definition from a static library. */
93f3fa99
AM		 6863 force_local = (!fh->elf.def_regular
6864 || fdh == NULL
6865 || !fdh->elf.def_regular
6866 || fdh->elf.forced_local);
50bc7936
AM		 6867 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6868
b34976b6 6869 return TRUE;
e86ce104 6870}
40b8271b 6871
e86ce104 6872/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 6873 this hook to a) provide some gcc support functions, and b) transfer
6874 dynamic linking information gathered so far on function code symbol
6875 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6876
b34976b6 6877static bfd_boolean
4ce794b7
AM		 6878ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6879 struct bfd_link_info *info)
e86ce104
AM		 6880{
6881 struct ppc_link_hash_table *htab;
82bd7b59 6882 unsigned int i;
27fc25a1 6883 static const struct sfpr_def_parms funcs[] =
deb0e272
AM		 6884 {
6885 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6886 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6887 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6888 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6889 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6890 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6891 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6892 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6893 { "._savef", 14, 31, savefpr, savefpr1_tail },
6894 { "._restf", 14, 31, restfpr, restfpr1_tail },
6895 { "_savevr_", 20, 31, savevr, savevr_tail },
6896 { "_restvr_", 20, 31, restvr, restvr_tail }
6897 };
e86ce104
AM		 6898
6899 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6900 if (htab == NULL)
6901 return FALSE;
6902
5295321c
AM		 6903 if (!info->relocatable
6904 && htab->elf.hgot != NULL)
dba6fa9b
AM		 6905 {
6906 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6907 /* Make .TOC. defined so as to prevent it being made dynamic.
6908 The wrong value here is fixed later in ppc64_elf_set_toc. */
6909 htab->elf.hgot->type = STT_OBJECT;
6910 htab->elf.hgot->root.type = bfd_link_hash_defined;
6911 htab->elf.hgot->root.u.def.value = 0;
6912 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6913 htab->elf.hgot->def_regular = 1;
6914 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6915 | STV_HIDDEN);
6916 }
c66bb0ee 6917
82bd7b59
AM		 6918 if (htab->sfpr == NULL)
6919 /* We don't have any relocs. */
b34976b6 6920 return TRUE;
82bd7b59 6921
deb0e272
AM		 6922 /* Provide any missing _save* and _rest* functions. */
6923 htab->sfpr->size = 0;
7d4c687d 6924 if (htab->params->save_restore_funcs)
27fc25a1
AM		 6925 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6926 if (!sfpr_define (info, &funcs[i]))
6927 return FALSE;
82bd7b59 6928
4ce794b7 6929 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6930
eea6121a 6931 if (htab->sfpr->size == 0)
8423293d 6932 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6933
b34976b6 6934 return TRUE;
e86ce104
AM		 6935}
6936
a345bc8d
AM		 6937/* Return true if we have dynamic relocs that apply to read-only sections. */
6938
6939static bfd_boolean
6940readonly_dynrelocs (struct elf_link_hash_entry *h)
6941{
6942 struct ppc_link_hash_entry *eh;
6943 struct elf_dyn_relocs *p;
6944
6945 eh = (struct ppc_link_hash_entry *) h;
6946 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6947 {
6948 asection *s = p->sec->output_section;
6949
6950 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6951 return TRUE;
6952 }
6953 return FALSE;
6954}
6955
e86ce104
AM		 6956/* Adjust a symbol defined by a dynamic object and referenced by a
6957 regular object. The current definition is in some section of the
6958 dynamic object, but we're not including those sections. We have to
6959 change the definition to something the rest of the link can
6960 understand. */
6961
b34976b6 6962static bfd_boolean
4ce794b7
AM		 6963ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6964 struct elf_link_hash_entry *h)
e86ce104
AM		 6965{
6966 struct ppc_link_hash_table *htab;
e86ce104 6967 asection *s;
e86ce104
AM		 6968
6969 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6970 if (htab == NULL)
6971 return FALSE;
e86ce104
AM		 6972
6973 /* Deal with function syms. */
6974 if (h->type == STT_FUNC
e054468f 6975 || h->type == STT_GNU_IFUNC
f5385ebf 6976 || h->needs_plt)
e86ce104
AM		 6977 {
6978 /* Clear procedure linkage table information for any symbol that
6979 won't need a .plt entry. */
411e1bfb
AM		 6980 struct plt_entry *ent;
6981 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6982 if (ent->plt.refcount > 0)
6983 break;
8387904d 6984 if (ent == NULL
e054468f
AM		 6985 || (h->type != STT_GNU_IFUNC
6986 && (SYMBOL_CALLS_LOCAL (info, h)
6987 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6988 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 6989 {
411e1bfb 6990 h->plt.plist = NULL;
f5385ebf 6991 h->needs_plt = 0;
d1eca1e4 6992 h->pointer_equality_needed = 0;
40b8271b 6993 }
a345bc8d
AM		 6994 else if (abiversion (info->output_bfd) == 2)
6995 {
d1eca1e4
AM		 6996 /* Taking a function's address in a read/write section
6997 doesn't require us to define the function symbol in the
6998 executable on a global entry stub. A dynamic reloc can
6999 be used instead. */
7000 if (h->pointer_equality_needed
1009ef28 7001 && h->type != STT_GNU_IFUNC
d1eca1e4
AM		 7002 && !readonly_dynrelocs (h))
7003 {
7004 h->pointer_equality_needed = 0;
7005 h->non_got_ref = 0;
7006 }
7007
a345bc8d
AM		 7008 /* After adjust_dynamic_symbol, non_got_ref set in the
7009 non-shared case means that we have allocated space in
7010 .dynbss for the symbol and thus dyn_relocs for this
7011 symbol should be discarded.
7012 If we get here we know we are making a PLT entry for this
7013 symbol, and in an executable we'd normally resolve
7014 relocations against this symbol to the PLT entry. Allow
7015 dynamic relocs if the reference is weak, and the dynamic
7016 relocs will not cause text relocation. */
d1eca1e4
AM		 7017 else if (!h->ref_regular_nonweak
7018 && h->non_got_ref
7019 && h->type != STT_GNU_IFUNC
7020 && !readonly_dynrelocs (h))
a345bc8d
AM		 7021 h->non_got_ref = 0;
7022
7023 /* If making a plt entry, then we don't need copy relocs. */
7024 return TRUE;
7025 }
5bd4f169 7026 }
bbd7ec4a 7027 else
411e1bfb 7028 h->plt.plist = NULL;
5bd4f169
AM		 7029
7030 /* If this is a weak symbol, and there is a real definition, the
7031 processor independent code will have arranged for us to see the
7032 real definition first, and we can just use the same value. */
f6e332e6 7033 if (h->u.weakdef != NULL)
5bd4f169 7034 {
f6e332e6
AM		 7035 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7036 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7037 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7038 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7039 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7040 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7041 return TRUE;
5bd4f169
AM		 7042 }
7043
5bd4f169
AM		 7044 /* If we are creating a shared library, we must presume that the
7045 only references to the symbol are via the global offset table.
7046 For such cases we need not do anything here; the relocations will
7047 be handled correctly by relocate_section. */
7048 if (info->shared)
b34976b6 7049 return TRUE;
5bd4f169 7050
65f38f15
AM		 7051 /* If there are no references to this symbol that do not use the
7052 GOT, we don't need to generate a copy reloc. */
f5385ebf 7053 if (!h->non_got_ref)
b34976b6 7054 return TRUE;
65f38f15 7055
b186458a
JJ		 7056 /* Don't generate a copy reloc for symbols defined in the executable. */
7057 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7058 return TRUE;
7059
a345bc8d
AM		 7060 /* If we didn't find any dynamic relocs in read-only sections, then
7061 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7062 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7063 {
a345bc8d
AM		 7064 h->non_got_ref = 0;
7065 return TRUE;
65f38f15
AM		 7066 }
7067
5d35169e 7068 if (h->plt.plist != NULL)
97b639ba
AM		 7069 {
7070 /* We should never get here, but unfortunately there are versions
7071 of gcc out there that improperly (for this ABI) put initialized
7072 function pointers, vtable refs and suchlike in read-only
7073 sections. Allow them to proceed, but warn that this might
7074 break at runtime. */
25f53a85 7075 info->callbacks->einfo
bc30df16 7076 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7077 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7078 h->root.root.string);
7079 }
5d35169e
AM		 7080
7081 /* This is a reference to a symbol defined by a dynamic object which
7082 is not a function. */
7083
5bd4f169
AM		 7084 /* We must allocate the symbol in our .dynbss section, which will
7085 become part of the .bss section of the executable. There will be
7086 an entry for this symbol in the .dynsym section. The dynamic
7087 object will contain position independent code, so all references
7088 from the dynamic object to this symbol will go through the global
7089 offset table. The dynamic linker will use the .dynsym entry to
7090 determine the address it must put in the global offset table, so
7091 both the dynamic object and the regular object will refer to the
7092 same memory location for the variable. */
5bd4f169 7093
04c9666a
AM		 7094 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7095 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7096 runtime process image. We need to remember the offset into the
7097 .rela.bss section we are going to use. */
1d7e9d18 7098 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7099 {
eea6121a 7100 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7101 h->needs_copy = 1;
5bd4f169
AM		 7102 }
7103
4ce794b7 7104 s = htab->dynbss;
5bd4f169 7105
027297b7 7106 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 7107}
7108
e86ce104
AM		 7109/* If given a function descriptor symbol, hide both the function code
7110 sym and the descriptor. */
7111static void
4ce794b7
AM		 7112ppc64_elf_hide_symbol (struct bfd_link_info *info,
7113 struct elf_link_hash_entry *h,
7114 bfd_boolean force_local)
e86ce104 7115{
34814b9f 7116 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7117 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7118
34814b9f
AM		 7119 eh = (struct ppc_link_hash_entry *) h;
7120 if (eh->is_func_descriptor)
e86ce104 7121 {
34814b9f 7122 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7123
721956f4 7124 if (fh == NULL)
d1329ca3
AM		 7125 {
7126 const char *p, *q;
7127 struct ppc_link_hash_table *htab;
7128 char save;
7129
7130 /* We aren't supposed to use alloca in BFD because on
7131 systems which do not have alloca the version in libiberty
7132 calls xmalloc, which might cause the program to crash
7133 when it runs out of memory. This function doesn't have a
7134 return status, so there's no way to gracefully return an
7135 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7136 accessed; It's either a string in an ELF string table,
7137 or allocated in an objalloc structure. */
d1329ca3 7138
34814b9f 7139 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7140 save = *p;
7141 *(char *) p = '.';
7142 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7143 if (htab == NULL)
7144 return;
7145
34814b9f
AM		 7146 fh = (struct ppc_link_hash_entry *)
7147 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7148 *(char *) p = save;
7149
7150 /* Unfortunately, if it so happens that the string we were
7151 looking for was allocated immediately before this string,
7152 then we overwrote the string terminator. That's the only
7153 reason the lookup should fail. */
7154 if (fh == NULL)
7155 {
34814b9f
AM		 7156 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7157 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7158 --q, --p;
34814b9f
AM		 7159 if (q < eh->elf.root.root.string && *p == '.')
7160 fh = (struct ppc_link_hash_entry *)
7161 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7162 }
7163 if (fh != NULL)
7164 {
34814b9f
AM		 7165 eh->oh = fh;
7166 fh->oh = eh;
d1329ca3
AM		 7167 }
7168 }
e86ce104 7169 if (fh != NULL)
34814b9f 7170 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7171 }
7172}
7173
411e1bfb 7174static bfd_boolean
8843416a
AM		 7175get_sym_h (struct elf_link_hash_entry **hp,
7176 Elf_Internal_Sym **symp,
7177 asection **symsecp,
f961d9dd 7178 unsigned char **tls_maskp,
8843416a
AM		 7179 Elf_Internal_Sym **locsymsp,
7180 unsigned long r_symndx,
7181 bfd *ibfd)
411e1bfb 7182{
0ffa91dd 7183 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7184
7185 if (r_symndx >= symtab_hdr->sh_info)
7186 {
7187 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7188 struct elf_link_hash_entry *h;
7189
7190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7191 h = elf_follow_link (h);
411e1bfb
AM		 7192
7193 if (hp != NULL)
7194 *hp = h;
7195
7196 if (symp != NULL)
7197 *symp = NULL;
7198
7199 if (symsecp != NULL)
7200 {
7201 asection *symsec = NULL;
7202 if (h->root.type == bfd_link_hash_defined
7203 || h->root.type == bfd_link_hash_defweak)
7204 symsec = h->root.u.def.section;
7205 *symsecp = symsec;
7206 }
7207
e7b938ca 7208 if (tls_maskp != NULL)
411e1bfb
AM		 7209 {
7210 struct ppc_link_hash_entry *eh;
7211
7212 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7213 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7214 }
7215 }
7216 else
7217 {
7218 Elf_Internal_Sym *sym;
7219 Elf_Internal_Sym *locsyms = *locsymsp;
7220
7221 if (locsyms == NULL)
7222 {
7223 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7224 if (locsyms == NULL)
7225 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7226 symtab_hdr->sh_info,
7227 0, NULL, NULL, NULL);
7228 if (locsyms == NULL)
7229 return FALSE;
7230 *locsymsp = locsyms;
7231 }
7232 sym = locsyms + r_symndx;
7233
7234 if (hp != NULL)
7235 *hp = NULL;
7236
7237 if (symp != NULL)
7238 *symp = sym;
7239
7240 if (symsecp != NULL)
cb33740c 7241 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7242
e7b938ca 7243 if (tls_maskp != NULL)
411e1bfb
AM		 7244 {
7245 struct got_entry **lgot_ents;
f961d9dd 7246 unsigned char *tls_mask;
411e1bfb 7247
e7b938ca 7248 tls_mask = NULL;
411e1bfb
AM		 7249 lgot_ents = elf_local_got_ents (ibfd);
7250 if (lgot_ents != NULL)
7251 {
e054468f
AM		 7252 struct plt_entry **local_plt = (struct plt_entry **)
7253 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7254 unsigned char *lgot_masks = (unsigned char *)
e054468f 7255 (local_plt + symtab_hdr->sh_info);
e7b938ca 7256 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7257 }
e7b938ca 7258 *tls_maskp = tls_mask;
411e1bfb
AM		 7259 }
7260 }
7261 return TRUE;
7262}
7263
e7b938ca 7264/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7265 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7266 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7267
7268static int
f961d9dd 7269get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7270 unsigned long *toc_symndx,
7271 bfd_vma *toc_addend,
0d4792f7 7272 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7273 const Elf_Internal_Rela *rel,
7274 bfd *ibfd)
411e1bfb
AM		 7275{
7276 unsigned long r_symndx;
0d4792f7 7277 int next_r;
411e1bfb
AM		 7278 struct elf_link_hash_entry *h;
7279 Elf_Internal_Sym *sym;
7280 asection *sec;
7281 bfd_vma off;
7282
7283 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7284 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7285 return 0;
411e1bfb 7286
e7b938ca 7287 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7288 || sec == NULL
6bee8834 7289 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7290 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7291 return 1;
411e1bfb
AM		 7292
7293 /* Look inside a TOC section too. */
7294 if (h != NULL)
7295 {
7296 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7297 off = h->root.u.def.value;
7298 }
7299 else
7300 off = sym->st_value;
7301 off += rel->r_addend;
7302 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7303 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7304 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7305 if (toc_symndx != NULL)
7306 *toc_symndx = r_symndx;
3a71aa26
AM		 7307 if (toc_addend != NULL)
7308 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7309 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7310 return 0;
854b41e7 7311 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7312 && (next_r == -1 || next_r == -2))
7313 return 1 - next_r;
951fd09b 7314 return 1;
411e1bfb
AM		 7315}
7316
3b421ab3
AM		 7317/* Find (or create) an entry in the tocsave hash table. */
7318
7319static struct tocsave_entry *
7320tocsave_find (struct ppc_link_hash_table *htab,
7321 enum insert_option insert,
7322 Elf_Internal_Sym **local_syms,
7323 const Elf_Internal_Rela *irela,
7324 bfd *ibfd)
7325{
7326 unsigned long r_indx;
7327 struct elf_link_hash_entry *h;
7328 Elf_Internal_Sym *sym;
7329 struct tocsave_entry ent, *p;
7330 hashval_t hash;
7331 struct tocsave_entry **slot;
7332
7333 r_indx = ELF64_R_SYM (irela->r_info);
7334 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7335 return NULL;
7336 if (ent.sec == NULL || ent.sec->output_section == NULL)
7337 {
7338 (*_bfd_error_handler)
7339 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7340 return NULL;
7341 }
7342
7343 if (h != NULL)
7344 ent.offset = h->root.u.def.value;
7345 else
7346 ent.offset = sym->st_value;
7347 ent.offset += irela->r_addend;
7348
7349 hash = tocsave_htab_hash (&ent);
7350 slot = ((struct tocsave_entry **)
7351 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7352 if (slot == NULL)
7353 return NULL;
7354
7355 if (*slot == NULL)
7356 {
7357 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7358 if (p == NULL)
7359 return NULL;
7360 *p = ent;
7361 *slot = p;
7362 }
7363 return *slot;
7364}
7365
754021d0 7366/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7367 code for the old ABI, these will already have been done. */
754021d0
AM		 7368
7369static bfd_boolean
7370adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7371{
7372 struct ppc_link_hash_entry *eh;
7373 asection *sym_sec;
74f0fb50 7374 struct _opd_sec_data *opd;
754021d0
AM		 7375
7376 if (h->root.type == bfd_link_hash_indirect)
7377 return TRUE;
7378
754021d0
AM		 7379 if (h->root.type != bfd_link_hash_defined
7380 && h->root.type != bfd_link_hash_defweak)
7381 return TRUE;
7382
7383 eh = (struct ppc_link_hash_entry *) h;
7384 if (eh->adjust_done)
7385 return TRUE;
7386
7387 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7388 opd = get_opd_info (sym_sec);
7389 if (opd != NULL && opd->adjust != NULL)
754021d0 7390 {
74f0fb50 7391 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 7392 if (adjust == -1)
7393 {
7394 /* This entry has been deleted. */
b3fac117 7395 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7396 if (dsec == NULL)
7397 {
7398 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7399 if (discarded_section (dsec))
81688140 7400 {
b3fac117 7401 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7402 break;
7403 }
7404 }
4025353c 7405 eh->elf.root.u.def.value = 0;
81688140 7406 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7407 }
7408 else
7409 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7410 eh->adjust_done = 1;
7411 }
7412 return TRUE;
7413}
7414
8c1d1bb8 7415/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7416 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7417 have already been determined. */
7418
7419static bfd_boolean
7420dec_dynrel_count (bfd_vma r_info,
7421 asection *sec,
7422 struct bfd_link_info *info,
7423 Elf_Internal_Sym **local_syms,
7424 struct elf_link_hash_entry *h,
19e08130 7425 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7426{
7427 enum elf_ppc64_reloc_type r_type;
19e08130 7428 asection *sym_sec = NULL;
8c1d1bb8
AM		 7429
7430 /* Can this reloc be dynamic? This switch, and later tests here
7431 should be kept in sync with the code in check_relocs. */
7432 r_type = ELF64_R_TYPE (r_info);
7433 switch (r_type)
7434 {
7435 default:
7436 return TRUE;
7437
7438 case R_PPC64_TPREL16:
7439 case R_PPC64_TPREL16_LO:
7440 case R_PPC64_TPREL16_HI:
7441 case R_PPC64_TPREL16_HA:
7442 case R_PPC64_TPREL16_DS:
7443 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7444 case R_PPC64_TPREL16_HIGH:
7445 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7446 case R_PPC64_TPREL16_HIGHER:
7447 case R_PPC64_TPREL16_HIGHERA:
7448 case R_PPC64_TPREL16_HIGHEST:
7449 case R_PPC64_TPREL16_HIGHESTA:
7450 if (!info->shared)
7451 return TRUE;
7452
7453 case R_PPC64_TPREL64:
7454 case R_PPC64_DTPMOD64:
7455 case R_PPC64_DTPREL64:
7456 case R_PPC64_ADDR64:
7457 case R_PPC64_REL30:
7458 case R_PPC64_REL32:
7459 case R_PPC64_REL64:
7460 case R_PPC64_ADDR14:
7461 case R_PPC64_ADDR14_BRNTAKEN:
7462 case R_PPC64_ADDR14_BRTAKEN:
7463 case R_PPC64_ADDR16:
7464 case R_PPC64_ADDR16_DS:
7465 case R_PPC64_ADDR16_HA:
7466 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7467 case R_PPC64_ADDR16_HIGH:
7468 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7469 case R_PPC64_ADDR16_HIGHER:
7470 case R_PPC64_ADDR16_HIGHERA:
7471 case R_PPC64_ADDR16_HIGHEST:
7472 case R_PPC64_ADDR16_HIGHESTA:
7473 case R_PPC64_ADDR16_LO:
7474 case R_PPC64_ADDR16_LO_DS:
7475 case R_PPC64_ADDR24:
7476 case R_PPC64_ADDR32:
7477 case R_PPC64_UADDR16:
7478 case R_PPC64_UADDR32:
7479 case R_PPC64_UADDR64:
7480 case R_PPC64_TOC:
7481 break;
7482 }
7483
7484 if (local_syms != NULL)
7485 {
7486 unsigned long r_symndx;
8c1d1bb8
AM		 7487 bfd *ibfd = sec->owner;
7488
7489 r_symndx = ELF64_R_SYM (r_info);
7490 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7491 return FALSE;
7492 }
7493
7494 if ((info->shared
1d483afe 7495 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7496 || (h != NULL
198f1157 7497 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7498 || h->root.type == bfd_link_hash_defweak
7499 || !h->def_regular))))
7500 || (ELIMINATE_COPY_RELOCS
7501 && !info->shared
7502 && h != NULL
7503 && (h->root.type == bfd_link_hash_defweak
7504 || !h->def_regular)))
7505 ;
7506 else
7507 return TRUE;
7508
7509 if (h != NULL)
6edfbbad 7510 {
19e08130
AM		 7511 struct elf_dyn_relocs *p;
7512 struct elf_dyn_relocs **pp;
7513 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7514
7515 /* elf_gc_sweep may have already removed all dyn relocs associated
7516 with local syms for a given section. Also, symbol flags are
7517 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7518 report a dynreloc miscount. */
7519 if (*pp == NULL && info->gc_sections)
7520 return TRUE;
7521
7522 while ((p = *pp) != NULL)
60124e18 7523 {
19e08130
AM		 7524 if (p->sec == sec)
7525 {
7526 if (!must_be_dyn_reloc (info, r_type))
7527 p->pc_count -= 1;
7528 p->count -= 1;
7529 if (p->count == 0)
7530 *pp = p->next;
7531 return TRUE;
7532 }
7533 pp = &p->next;
60124e18 7534 }
6edfbbad 7535 }
19e08130
AM		 7536 else
7537 {
7538 struct ppc_dyn_relocs *p;
7539 struct ppc_dyn_relocs **pp;
7540 void *vpp;
7541 bfd_boolean is_ifunc;
8c1d1bb8 7542
19e08130
AM		 7543 if (local_syms == NULL)
7544 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7545 if (sym_sec == NULL)
7546 sym_sec = sec;
c57da1a7 7547
19e08130
AM		 7548 vpp = &elf_section_data (sym_sec)->local_dynrel;
7549 pp = (struct ppc_dyn_relocs **) vpp;
7550
7551 if (*pp == NULL && info->gc_sections)
7552 return TRUE;
7553
7554 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7555 while ((p = *pp) != NULL)
8c1d1bb8 7556 {
19e08130
AM		 7557 if (p->sec == sec && p->ifunc == is_ifunc)
7558 {
7559 p->count -= 1;
7560 if (p->count == 0)
7561 *pp = p->next;
7562 return TRUE;
7563 }
7564 pp = &p->next;
8c1d1bb8 7565 }
8c1d1bb8
AM		 7566 }
7567
8de848d8 7568 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7569 sec->owner, sec);
8c1d1bb8
AM		 7570 bfd_set_error (bfd_error_bad_value);
7571 return FALSE;
7572}
7573
754021d0
AM		 7574/* Remove unused Official Procedure Descriptor entries. Currently we
7575 only remove those associated with functions in discarded link-once
7576 sections, or weakly defined functions that have been overridden. It
7577 would be possible to remove many more entries for statically linked
7578 applications. */
7579
b34976b6 7580bfd_boolean
e7d1c40c 7581ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7582{
7583 bfd *ibfd;
754021d0 7584 bfd_boolean some_edited = FALSE;
3f764659 7585 asection *need_pad = NULL;
e7d1c40c
AM		 7586 struct ppc_link_hash_table *htab;
7587
7588 htab = ppc_hash_table (info);
7589 if (htab == NULL)
7590 return FALSE;
1e2f5b6e 7591
c72f2fb2 7592 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7593 {
7594 asection *sec;
7595 Elf_Internal_Rela *relstart, *rel, *relend;
7596 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7597 Elf_Internal_Sym *local_syms;
1e2f5b6e 7598 bfd_vma offset;
74f0fb50 7599 struct _opd_sec_data *opd;
3f764659
JJ		 7600 bfd_boolean need_edit, add_aux_fields;
7601 bfd_size_type cnt_16b = 0;
1e2f5b6e 7602
854b41e7
AM		 7603 if (!is_ppc64_elf (ibfd))
7604 continue;
7605
1e2f5b6e 7606 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7607 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7608 continue;
7609
dbaa2011 7610 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7611 continue;
7612
1e2f5b6e
AM		 7613 if (sec->output_section == bfd_abs_section_ptr)
7614 continue;
7615
7616 /* Look through the section relocs. */
7617 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7618 continue;
7619
6cdc0ccc 7620 local_syms = NULL;
0ffa91dd 7621 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7622
7623 /* Read the relocations. */
4ce794b7 7624 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7625 info->keep_memory);
1e2f5b6e 7626 if (relstart == NULL)
b34976b6 7627 return FALSE;
1e2f5b6e
AM		 7628
7629 /* First run through the relocs to check they are sane, and to
7630 determine whether we need to edit this opd section. */
b34976b6 7631 need_edit = FALSE;
3f764659 7632 need_pad = sec;
1e2f5b6e
AM		 7633 offset = 0;
7634 relend = relstart + sec->reloc_count;
50bc7936 7635 for (rel = relstart; rel < relend; )
1e2f5b6e 7636 {
04c9666a 7637 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7638 unsigned long r_symndx;
7639 asection *sym_sec;
7640 struct elf_link_hash_entry *h;
7641 Elf_Internal_Sym *sym;
7642
3f764659 7643 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7644 only interested in the reloc pointing to a function entry
7645 point. */
50bc7936
AM		 7646 if (rel->r_offset != offset
7647 || rel + 1 >= relend
7648 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 7649 {
7650 /* If someone messes with .opd alignment then after a
7651 "ld -r" we might have padding in the middle of .opd.
7652 Also, there's nothing to prevent someone putting
7653 something silly in .opd with the assembler. No .opd
b34976b6 7654 optimization for them! */
3f764659 7655 broken_opd:
1e2f5b6e 7656 (*_bfd_error_handler)
d003868e 7657 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7658 need_edit = FALSE;
1e2f5b6e
AM		 7659 break;
7660 }
7661
50bc7936
AM		 7662 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7663 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7664 {
7665 (*_bfd_error_handler)
d003868e
AM		 7666 (_("%B: unexpected reloc type %u in .opd section"),
7667 ibfd, r_type);
50bc7936
AM		 7668 need_edit = FALSE;
7669 break;
7670 }
7671
1e2f5b6e 7672 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7673 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7674 r_symndx, ibfd))
50bc7936 7675 goto error_ret;
1e2f5b6e
AM		 7676
7677 if (sym_sec == NULL || sym_sec->owner == NULL)
7678 {
411e1bfb
AM		 7679 const char *sym_name;
7680 if (h != NULL)
7681 sym_name = h->root.root.string;
7682 else
26c61ae5
L		 7683 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7684 sym_sec);
411e1bfb 7685
1e2f5b6e 7686 (*_bfd_error_handler)
d003868e
AM		 7687 (_("%B: undefined sym `%s' in .opd section"),
7688 ibfd, sym_name);
b34976b6 7689 need_edit = FALSE;
1e2f5b6e
AM		 7690 break;
7691 }
7692
51020317
AM		 7693 /* opd entries are always for functions defined in the
7694 current input bfd. If the symbol isn't defined in the
7695 input bfd, then we won't be using the function in this
7696 bfd; It must be defined in a linkonce section in another
7697 bfd, or is weak. It's also possible that we are
7698 discarding the function due to a linker script /DISCARD/,
7699 which we test for via the output_section. */
7700 if (sym_sec->owner != ibfd
7701 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7702 need_edit = TRUE;
1e2f5b6e 7703
50bc7936 7704 rel += 2;
3f764659
JJ		 7705 if (rel == relend
7706 || (rel + 1 == relend && rel->r_offset == offset + 16))
7707 {
7708 if (sec->size == offset + 24)
7709 {
7710 need_pad = NULL;
7711 break;
7712 }
7713 if (rel == relend && sec->size == offset + 16)
7714 {
7715 cnt_16b++;
7716 break;
7717 }
7718 goto broken_opd;
7719 }
7720
7721 if (rel->r_offset == offset + 24)
7722 offset += 24;
7723 else if (rel->r_offset != offset + 16)
7724 goto broken_opd;
7725 else if (rel + 1 < relend
7726 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7727 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7728 {
7729 offset += 16;
7730 cnt_16b++;
7731 }
7732 else if (rel + 2 < relend
7733 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7734 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7735 {
7736 offset += 24;
7737 rel += 1;
7738 }
7739 else
7740 goto broken_opd;
1e2f5b6e
AM		 7741 }
7742
e7d1c40c 7743 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659
JJ		 7744
7745 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 7746 {
7747 Elf_Internal_Rela *write_rel;
d4730f92 7748 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7749 bfd_byte *rptr, *wptr;
983bddc8 7750 bfd_byte *new_contents;
b34976b6 7751 bfd_boolean skip;
3f764659 7752 long opd_ent_size;
74f0fb50
AM		 7753 bfd_size_type amt;
7754
983bddc8 7755 new_contents = NULL;
74f0fb50
AM		 7756 amt = sec->size * sizeof (long) / 8;
7757 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7758 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7759 if (opd->adjust == NULL)
7760 return FALSE;
7761 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7762
7763 /* This seems a waste of time as input .opd sections are all
7764 zeros as generated by gcc, but I suppose there's no reason
7765 this will always be so. We might start putting something in
7766 the third word of .opd entries. */
7767 if ((sec->flags & SEC_IN_MEMORY) == 0)
7768 {
eea6121a
AM		 7769 bfd_byte *loc;
7770 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7771 {
eea6121a
AM		 7772 if (loc != NULL)
7773 free (loc);
50bc7936 7774 error_ret:
6cdc0ccc
AM		 7775 if (local_syms != NULL
7776 && symtab_hdr->contents != (unsigned char *) local_syms)
7777 free (local_syms);
6cdc0ccc
AM		 7778 if (elf_section_data (sec)->relocs != relstart)
7779 free (relstart);
b34976b6 7780 return FALSE;
6cdc0ccc 7781 }
1e2f5b6e
AM		 7782 sec->contents = loc;
7783 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7784 }
7785
7786 elf_section_data (sec)->relocs = relstart;
7787
3f764659 7788 new_contents = sec->contents;
3f764659
JJ		 7789 if (add_aux_fields)
7790 {
7791 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7792 if (new_contents == NULL)
7793 return FALSE;
7794 need_pad = FALSE;
3f764659 7795 }
b4f4e59f
AM		 7796 wptr = new_contents;
7797 rptr = sec->contents;
3f764659 7798
1e2f5b6e 7799 write_rel = relstart;
b34976b6 7800 skip = FALSE;
1e2f5b6e 7801 offset = 0;
3f764659 7802 opd_ent_size = 0;
1e2f5b6e
AM		 7803 for (rel = relstart; rel < relend; rel++)
7804 {
50bc7936
AM		 7805 unsigned long r_symndx;
7806 asection *sym_sec;
7807 struct elf_link_hash_entry *h;
7808 Elf_Internal_Sym *sym;
7809
7810 r_symndx = ELF64_R_SYM (rel->r_info);
7811 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7812 r_symndx, ibfd))
50bc7936
AM		 7813 goto error_ret;
7814
1e2f5b6e
AM		 7815 if (rel->r_offset == offset)
7816 {
50bc7936 7817 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 7818
7819 /* See if the .opd entry is full 24 byte or
7820 16 byte (with fd_aux entry overlapped with next
7821 fd_func). */
7822 opd_ent_size = 24;
7823 if ((rel + 2 == relend && sec->size == offset + 16)
7824 || (rel + 3 < relend
7825 && rel[2].r_offset == offset + 16
7826 && rel[3].r_offset == offset + 24
7827 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7828 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7829 opd_ent_size = 16;
7830
4025353c
AM		 7831 if (h != NULL
7832 && h->root.root.string[0] == '.')
c4f68ce3 7833 {
e7d1c40c 7834 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
c4f68ce3
AM		 7835 if (fdh != NULL
7836 && fdh->elf.root.type != bfd_link_hash_defined
7837 && fdh->elf.root.type != bfd_link_hash_defweak)
7838 fdh = NULL;
7839 }
1e2f5b6e 7840
51020317
AM		 7841 skip = (sym_sec->owner != ibfd
7842 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 7843 if (skip)
7844 {
4025353c 7845 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 7846 {
7847 /* Arrange for the function descriptor sym
7848 to be dropped. */
d6fe2dc1
AM		 7849 fdh->elf.root.u.def.value = 0;
7850 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7851 }
74f0fb50 7852 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 7853 }
7854 else
1e2f5b6e
AM		 7855 {
7856 /* We'll be keeping this opd entry. */
7857
4025353c 7858 if (fdh != NULL)
1e2f5b6e 7859 {
754021d0
AM		 7860 /* Redefine the function descriptor symbol to
7861 this location in the opd section. It is
7862 necessary to update the value here rather
7863 than using an array of adjustments as we do
7864 for local symbols, because various places
7865 in the generic ELF code use the value
7866 stored in u.def.value. */
3f764659 7867 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7868 fdh->adjust_done = 1;
1e2f5b6e 7869 }
754021d0
AM		 7870
7871 /* Local syms are a bit tricky. We could
7872 tweak them as they can be cached, but
7873 we'd need to look through the local syms
7874 for the function descriptor sym which we
7875 don't have at the moment. So keep an
7876 array of adjustments. */
74f0fb50 7877 opd->adjust[rel->r_offset / 8]
3f764659 7878 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 7879
7880 if (wptr != rptr)
3f764659
JJ		 7881 memcpy (wptr, rptr, opd_ent_size);
7882 wptr += opd_ent_size;
7883 if (add_aux_fields && opd_ent_size == 16)
7884 {
7885 memset (wptr, '\0', 8);
7886 wptr += 8;
7887 }
1e2f5b6e 7888 }
3f764659
JJ		 7889 rptr += opd_ent_size;
7890 offset += opd_ent_size;
1e2f5b6e
AM		 7891 }
7892
50bc7936
AM		 7893 if (skip)
7894 {
60124e18
AM		 7895 if (!NO_OPD_RELOCS
7896 && !info->relocatable
18d944df 7897 && !dec_dynrel_count (rel->r_info, sec, info,
19e08130 7898 NULL, h, sym))
8c1d1bb8 7899 goto error_ret;
50bc7936
AM		 7900 }
7901 else
1e2f5b6e 7902 {
50bc7936
AM		 7903 /* We need to adjust any reloc offsets to point to the
7904 new opd entries. While we're at it, we may as well
7905 remove redundant relocs. */
74f0fb50 7906 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 7907 if (write_rel != rel)
7908 memcpy (write_rel, rel, sizeof (*rel));
7909 ++write_rel;
7910 }
7911 }
7912
3f764659 7913 sec->size = wptr - new_contents;
1e2f5b6e 7914 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7915 if (add_aux_fields)
7916 {
7917 free (sec->contents);
7918 sec->contents = new_contents;
7919 }
7920
05bf9422 7921 /* Fudge the header size too, as this is used later in
cdcf6e38 7922 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7923 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7924 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7925 some_edited = TRUE;
1e2f5b6e 7926 }
6cdc0ccc 7927 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7928 free (relstart);
6cdc0ccc 7929
411e1bfb
AM		 7930 if (local_syms != NULL
7931 && symtab_hdr->contents != (unsigned char *) local_syms)
7932 {
7933 if (!info->keep_memory)
7934 free (local_syms);
7935 else
7936 symtab_hdr->contents = (unsigned char *) local_syms;
7937 }
7938 }
7939
754021d0
AM		 7940 if (some_edited)
7941 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7942
3f764659
JJ		 7943 /* If we are doing a final link and the last .opd entry is just 16 byte
7944 long, add a 8 byte padding after it. */
7945 if (need_pad != NULL && !info->relocatable)
7946 {
7947 bfd_byte *p;
7948
7949 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7950 {
7951 BFD_ASSERT (need_pad->size > 0);
7952
7953 p = bfd_malloc (need_pad->size + 8);
7954 if (p == NULL)
7955 return FALSE;
699733f6 7956
3f764659
JJ		 7957 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7958 p, 0, need_pad->size))
7959 return FALSE;
7960
7961 need_pad->contents = p;
7962 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7963 }
7964 else
7965 {
7966 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7967 if (p == NULL)
7968 return FALSE;
7969
7970 need_pad->contents = p;
7971 }
7972
7973 memset (need_pad->contents + need_pad->size, 0, 8);
7974 need_pad->size += 8;
7975 }
7976
411e1bfb
AM		 7977 return TRUE;
7978}
7979
e1918d23 7980/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7981
e1918d23 7982asection *
e7d1c40c 7983ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 7984{
411e1bfb
AM		 7985 struct ppc_link_hash_table *htab;
7986
411e1bfb 7987 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7988 if (htab == NULL)
7989 return NULL;
7990
ee67d69a
AM		 7991 if (abiversion (info->output_bfd) == 1)
7992 htab->opd_abi = 1;
7993
e7d1c40c 7994 if (htab->params->no_multi_toc)
33c0ec9d
AM		 7995 htab->do_multi_toc = 0;
7996 else if (!htab->do_multi_toc)
e7d1c40c 7997 htab->params->no_multi_toc = 1;
33c0ec9d 7998
3a71aa26
AM		 7999 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8000 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8001 FALSE, FALSE, TRUE));
a7f2871e
AM		 8002 /* Move dynamic linking info to the function descriptor sym. */
8003 if (htab->tls_get_addr != NULL)
8004 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8005 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8006 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8007 FALSE, FALSE, TRUE));
e7d1c40c 8008 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8009 {
8010 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8011
8012 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8013 FALSE, FALSE, TRUE);
8014 if (opt != NULL)
8015 func_desc_adjust (opt, info);
8016 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8017 FALSE, FALSE, TRUE);
8018 if (opt_fd != NULL
8019 && (opt_fd->root.type == bfd_link_hash_defined
8020 || opt_fd->root.type == bfd_link_hash_defweak))
8021 {
8022 /* If glibc supports an optimized __tls_get_addr call stub,
8023 signalled by the presence of __tls_get_addr_opt, and we'll
8024 be calling __tls_get_addr via a plt call stub, then
8025 make __tls_get_addr point to __tls_get_addr_opt. */
8026 tga_fd = &htab->tls_get_addr_fd->elf;
8027 if (htab->elf.dynamic_sections_created
8028 && tga_fd != NULL
8029 && (tga_fd->type == STT_FUNC
8030 || tga_fd->needs_plt)
8031 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8032 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8033 && tga_fd->root.type == bfd_link_hash_undefweak)))
8034 {
8035 struct plt_entry *ent;
8036
8037 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8038 if (ent->plt.refcount > 0)
8039 break;
8040 if (ent != NULL)
8041 {
8042 tga_fd->root.type = bfd_link_hash_indirect;
8043 tga_fd->root.u.i.link = &opt_fd->root;
8044 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8045 if (opt_fd->dynindx != -1)
8046 {
8047 /* Use __tls_get_addr_opt in dynamic relocations. */
8048 opt_fd->dynindx = -1;
8049 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8050 opt_fd->dynstr_index);
8051 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8052 return NULL;
a7f2871e
AM		 8053 }
8054 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8055 tga = &htab->tls_get_addr->elf;
8056 if (opt != NULL && tga != NULL)
8057 {
8058 tga->root.type = bfd_link_hash_indirect;
8059 tga->root.u.i.link = &opt->root;
8060 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8061 _bfd_elf_link_hash_hide_symbol (info, opt,
8062 tga->forced_local);
8063 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8064 }
8065 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8066 htab->tls_get_addr_fd->is_func_descriptor = 1;
8067 if (htab->tls_get_addr != NULL)
8068 {
8069 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8070 htab->tls_get_addr->is_func = 1;
8071 }
8072 }
8073 }
8074 }
8075 else
e7d1c40c 8076 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8077 }
33c0ec9d 8078 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8079}
8387904d 8080
3a71aa26
AM		 8081/* Return TRUE iff REL is a branch reloc with a global symbol matching
8082 HASH1 or HASH2. */
8387904d 8083
3a71aa26
AM		 8084static bfd_boolean
8085branch_reloc_hash_match (const bfd *ibfd,
8086 const Elf_Internal_Rela *rel,
8087 const struct ppc_link_hash_entry *hash1,
8088 const struct ppc_link_hash_entry *hash2)
8089{
8090 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8091 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8092 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8093
e054468f 8094 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8095 {
3a71aa26
AM		 8096 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8097 struct elf_link_hash_entry *h;
8387904d 8098
3a71aa26 8099 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8100 h = elf_follow_link (h);
3a71aa26
AM		 8101 if (h == &hash1->elf || h == &hash2->elf)
8102 return TRUE;
a48ebf4d 8103 }
3a71aa26 8104 return FALSE;
951fd09b 8105}
411e1bfb 8106
951fd09b
AM		 8107/* Run through all the TLS relocs looking for optimization
8108 opportunities. The linker has been hacked (see ppc64elf.em) to do
8109 a preliminary section layout so that we know the TLS segment
8110 offsets. We can't optimize earlier because some optimizations need
8111 to know the tp offset, and we need to optimize before allocating
8112 dynamic relocations. */
8113
8114bfd_boolean
33c0ec9d 8115ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8116{
8117 bfd *ibfd;
8118 asection *sec;
8119 struct ppc_link_hash_table *htab;
663a1470 8120 unsigned char *toc_ref;
102890f0 8121 int pass;
951fd09b 8122
1d483afe 8123 if (info->relocatable || !info->executable)
411e1bfb
AM		 8124 return TRUE;
8125
951fd09b 8126 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8127 if (htab == NULL)
8128 return FALSE;
8129
663a1470
AM		 8130 /* Make two passes over the relocs. On the first pass, mark toc
8131 entries involved with tls relocs, and check that tls relocs
8132 involved in setting up a tls_get_addr call are indeed followed by
8133 such a call. If they are not, we can't do any tls optimization.
8134 On the second pass twiddle tls_mask flags to notify
8135 relocate_section that optimization can be done, and adjust got
8136 and plt refcounts. */
8137 toc_ref = NULL;
8138 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8139 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8140 {
8141 Elf_Internal_Sym *locsyms = NULL;
8142 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8143
102890f0
AM		 8144 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8145 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8146 {
8147 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8148 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8149
102890f0
AM		 8150 /* Read the relocations. */
8151 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8152 info->keep_memory);
8153 if (relstart == NULL)
2915c55b
JK		 8154 {
8155 free (toc_ref);
8156 return FALSE;
8157 }
411e1bfb 8158
102890f0
AM		 8159 relend = relstart + sec->reloc_count;
8160 for (rel = relstart; rel < relend; rel++)
8161 {
8162 enum elf_ppc64_reloc_type r_type;
8163 unsigned long r_symndx;
8164 struct elf_link_hash_entry *h;
8165 Elf_Internal_Sym *sym;
8166 asection *sym_sec;
f961d9dd
AM		 8167 unsigned char *tls_mask;
8168 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8169 bfd_vma value;
8170 bfd_boolean ok_tprel, is_local;
8171 long toc_ref_index = 0;
8172 int expecting_tls_get_addr = 0;
663a1470 8173 bfd_boolean ret = FALSE;
411e1bfb 8174
102890f0
AM		 8175 r_symndx = ELF64_R_SYM (rel->r_info);
8176 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8177 r_symndx, ibfd))
8178 {
8179 err_free_rel:
8180 if (elf_section_data (sec)->relocs != relstart)
8181 free (relstart);
8182 if (toc_ref != NULL)
8183 free (toc_ref);
8184 if (locsyms != NULL
0ffa91dd 8185 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8186 != (unsigned char *) locsyms))
8187 free (locsyms);
663a1470 8188 return ret;
102890f0 8189 }
411e1bfb 8190
102890f0
AM		 8191 if (h != NULL)
8192 {
766bc656
AM		 8193 if (h->root.type == bfd_link_hash_defined
8194 || h->root.type == bfd_link_hash_defweak)
8195 value = h->root.u.def.value;
8196 else if (h->root.type == bfd_link_hash_undefweak)
8197 value = 0;
8198 else
663a1470
AM		 8199 {
8200 found_tls_get_addr_arg = 0;
8201 continue;
8202 }
102890f0
AM		 8203 }
8204 else
8205 /* Symbols referenced by TLS relocs must be of type
8206 STT_TLS. So no need for .opd local sym adjust. */
8207 value = sym->st_value;
8208
8209 ok_tprel = FALSE;
8210 is_local = FALSE;
8211 if (h == NULL
8212 || !h->def_dynamic)
8213 {
8214 is_local = TRUE;
766bc656
AM		 8215 if (h != NULL
8216 && h->root.type == bfd_link_hash_undefweak)
8217 ok_tprel = TRUE;
8218 else
8219 {
8220 value += sym_sec->output_offset;
8221 value += sym_sec->output_section->vma;
8222 value -= htab->elf.tls_sec->vma;
8223 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8224 < (bfd_vma) 1 << 32);
8225 }
102890f0 8226 }
951fd09b 8227
102890f0 8228 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8229 /* If this section has old-style __tls_get_addr calls
8230 without marker relocs, then check that each
8231 __tls_get_addr call reloc is preceded by a reloc
8232 that conceivably belongs to the __tls_get_addr arg
8233 setup insn. If we don't find matching arg setup
8234 relocs, don't do any tls optimization. */
8235 if (pass == 0
8236 && sec->has_tls_get_addr_call
8237 && h != NULL
8238 && (h == &htab->tls_get_addr->elf
8239 || h == &htab->tls_get_addr_fd->elf)
8240 && !found_tls_get_addr_arg
8241 && is_branch_reloc (r_type))
8242 {
25f53a85 8243 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8244 "TLS optimization disabled\n"),
8245 ibfd, sec, rel->r_offset);
8246 ret = TRUE;
8247 goto err_free_rel;
8248 }
8249
8250 found_tls_get_addr_arg = 0;
102890f0
AM		 8251 switch (r_type)
8252 {
8253 case R_PPC64_GOT_TLSLD16:
8254 case R_PPC64_GOT_TLSLD16_LO:
8255 expecting_tls_get_addr = 1;
663a1470 8256 found_tls_get_addr_arg = 1;
102890f0
AM		 8257 /* Fall thru */
8258
8259 case R_PPC64_GOT_TLSLD16_HI:
8260 case R_PPC64_GOT_TLSLD16_HA:
8261 /* These relocs should never be against a symbol
8262 defined in a shared lib. Leave them alone if
8263 that turns out to be the case. */
8264 if (!is_local)
8265 continue;
411e1bfb 8266
102890f0 8267 /* LD -> LE */
411e1bfb 8268 tls_set = 0;
102890f0
AM		 8269 tls_clear = TLS_LD;
8270 tls_type = TLS_TLS | TLS_LD;
8271 break;
411e1bfb 8272
102890f0
AM		 8273 case R_PPC64_GOT_TLSGD16:
8274 case R_PPC64_GOT_TLSGD16_LO:
8275 expecting_tls_get_addr = 1;
663a1470 8276 found_tls_get_addr_arg = 1;
102890f0
AM		 8277 /* Fall thru */
8278
8279 case R_PPC64_GOT_TLSGD16_HI:
8280 case R_PPC64_GOT_TLSGD16_HA:
8281 if (ok_tprel)
8282 /* GD -> LE */
411e1bfb 8283 tls_set = 0;
102890f0
AM		 8284 else
8285 /* GD -> IE */
8286 tls_set = TLS_TLS | TLS_TPRELGD;
8287 tls_clear = TLS_GD;
8288 tls_type = TLS_TLS | TLS_GD;
8289 break;
8290
8291 case R_PPC64_GOT_TPREL16_DS:
8292 case R_PPC64_GOT_TPREL16_LO_DS:
8293 case R_PPC64_GOT_TPREL16_HI:
8294 case R_PPC64_GOT_TPREL16_HA:
8295 if (ok_tprel)
8296 {
8297 /* IE -> LE */
8298 tls_set = 0;
8299 tls_clear = TLS_TPREL;
8300 tls_type = TLS_TLS | TLS_TPREL;
8301 break;
8302 }
411e1bfb
AM		 8303 continue;
8304
727fc41e
AM		 8305 case R_PPC64_TLSGD:
8306 case R_PPC64_TLSLD:
663a1470
AM		 8307 found_tls_get_addr_arg = 1;
8308 /* Fall thru */
8309
8310 case R_PPC64_TLS:
8311 case R_PPC64_TOC16:
8312 case R_PPC64_TOC16_LO:
102890f0
AM		 8313 if (sym_sec == NULL || sym_sec != toc)
8314 continue;
8315
8316 /* Mark this toc entry as referenced by a TLS
8317 code sequence. We can do that now in the
8318 case of R_PPC64_TLS, and after checking for
8319 tls_get_addr for the TOC16 relocs. */
8320 if (toc_ref == NULL)
663a1470
AM		 8321 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8322 if (toc_ref == NULL)
8323 goto err_free_rel;
8324
102890f0
AM		 8325 if (h != NULL)
8326 value = h->root.u.def.value;
8327 else
8328 value = sym->st_value;
8329 value += rel->r_addend;
8330 BFD_ASSERT (value < toc->size && value % 8 == 0);
663a1470 8331 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8332 if (r_type == R_PPC64_TLS
8333 || r_type == R_PPC64_TLSGD
8334 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8335 {
8336 toc_ref[toc_ref_index] = 1;
8337 continue;
8338 }
8339
8340 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8341 continue;
8342
8343 tls_set = 0;
8344 tls_clear = 0;
8345 expecting_tls_get_addr = 2;
8346 break;
8347
8348 case R_PPC64_TPREL64:
8349 if (pass == 0
8350 || sec != toc
8351 || toc_ref == NULL
663a1470 8352 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8353 continue;
8354 if (ok_tprel)
8355 {
8356 /* IE -> LE */
8357 tls_set = TLS_EXPLICIT;
8358 tls_clear = TLS_TPREL;
8359 break;
8360 }
8361 continue;
8362
8363 case R_PPC64_DTPMOD64:
8364 if (pass == 0
8365 || sec != toc
8366 || toc_ref == NULL
663a1470 8367 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8368 continue;
8369 if (rel + 1 < relend
8370 && (rel[1].r_info
8371 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8372 && rel[1].r_offset == rel->r_offset + 8)
8373 {
8374 if (ok_tprel)
8375 /* GD -> LE */
8376 tls_set = TLS_EXPLICIT | TLS_GD;
8377 else
8378 /* GD -> IE */
8379 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8380 tls_clear = TLS_GD;
8381 }
8382 else
8383 {
8384 if (!is_local)
8385 continue;
8386
8387 /* LD -> LE */
8388 tls_set = TLS_EXPLICIT;
8389 tls_clear = TLS_LD;
8390 }
8391 break;
8392
8393 default:
8394 continue;
8395 }
8396
8397 if (pass == 0)
8398 {
727fc41e
AM		 8399 if (!expecting_tls_get_addr
8400 || !sec->has_tls_get_addr_call)
102890f0
AM		 8401 continue;
8402
3a71aa26
AM		 8403 if (rel + 1 < relend
8404 && branch_reloc_hash_match (ibfd, rel + 1,
8405 htab->tls_get_addr,
8406 htab->tls_get_addr_fd))
102890f0 8407 {
3a71aa26 8408 if (expecting_tls_get_addr == 2)
102890f0 8409 {
3a71aa26 8410 /* Check for toc tls entries. */
f961d9dd 8411 unsigned char *toc_tls;
3a71aa26
AM		 8412 int retval;
8413
8414 retval = get_tls_mask (&toc_tls, NULL, NULL,
8415 &locsyms,
8416 rel, ibfd);
8417 if (retval == 0)
8418 goto err_free_rel;
663a1470
AM		 8419 if (toc_tls != NULL)
8420 {
8421 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8422 found_tls_get_addr_arg = 1;
8423 if (retval > 1)
8424 toc_ref[toc_ref_index] = 1;
8425 }
102890f0 8426 }
3a71aa26 8427 continue;
102890f0
AM		 8428 }
8429
8430 if (expecting_tls_get_addr != 1)
8431 continue;
8432
8433 /* Uh oh, we didn't find the expected call. We
8434 could just mark this symbol to exclude it
8435 from tls optimization but it's safer to skip
663a1470 8436 the entire optimization. */
25f53a85 8437 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8438 "TLS optimization disabled\n"),
8439 ibfd, sec, rel->r_offset);
8440 ret = TRUE;
8441 goto err_free_rel;
102890f0
AM		 8442 }
8443
85f7a9cb 8444 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8445 {
8446 struct plt_entry *ent;
8447 for (ent = htab->tls_get_addr->elf.plt.plist;
8448 ent != NULL;
8449 ent = ent->next)
8450 if (ent->addend == 0)
411e1bfb 8451 {
102890f0 8452 if (ent->plt.refcount > 0)
30038c59 8453 {
102890f0
AM		 8454 ent->plt.refcount -= 1;
8455 expecting_tls_get_addr = 0;
30038c59 8456 }
102890f0 8457 break;
411e1bfb 8458 }
102890f0 8459 }
411e1bfb 8460
85f7a9cb 8461 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8462 {
8463 struct plt_entry *ent;
8464 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8465 ent != NULL;
8466 ent = ent->next)
8467 if (ent->addend == 0)
411e1bfb 8468 {
102890f0
AM		 8469 if (ent->plt.refcount > 0)
8470 ent->plt.refcount -= 1;
8471 break;
411e1bfb 8472 }
102890f0 8473 }
411e1bfb 8474
102890f0 8475 if (tls_clear == 0)
30038c59
AM		 8476 continue;
8477
102890f0
AM		 8478 if ((tls_set & TLS_EXPLICIT) == 0)
8479 {
8480 struct got_entry *ent;
411e1bfb 8481
102890f0
AM		 8482 /* Adjust got entry for this reloc. */
8483 if (h != NULL)
8484 ent = h->got.glist;
8485 else
8486 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8487
102890f0
AM		 8488 for (; ent != NULL; ent = ent->next)
8489 if (ent->addend == rel->r_addend
8490 && ent->owner == ibfd
8491 && ent->tls_type == tls_type)
8492 break;
8493 if (ent == NULL)
8494 abort ();
411e1bfb 8495
102890f0
AM		 8496 if (tls_set == 0)
8497 {
8498 /* We managed to get rid of a got entry. */
8499 if (ent->got.refcount > 0)
8500 ent->got.refcount -= 1;
8501 }
8502 }
8503 else
8504 {
8505 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8506 we'll lose one or two dyn relocs. */
8507 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8508 NULL, h, sym))
102890f0 8509 return FALSE;
411e1bfb 8510
102890f0
AM		 8511 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8512 {
8513 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8514 NULL, h, sym))
102890f0
AM		 8515 return FALSE;
8516 }
8517 }
411e1bfb 8518
102890f0
AM		 8519 *tls_mask |= tls_set;
8520 *tls_mask &= ~tls_clear;
8521 }
8c1d1bb8 8522
102890f0
AM		 8523 if (elf_section_data (sec)->relocs != relstart)
8524 free (relstart);
8525 }
411e1bfb 8526
663a1470
AM		 8527 if (locsyms != NULL
8528 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8529 {
8530 if (!info->keep_memory)
8531 free (locsyms);
8532 else
8533 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8534 }
8535 }
411e1bfb 8536
663a1470
AM		 8537 if (toc_ref != NULL)
8538 free (toc_ref);
b34976b6 8539 return TRUE;
1e2f5b6e 8540}
b34976b6 8541
c5614fa4
AM		 8542/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8543 the values of any global symbols in a toc section that has been
8544 edited. Globals in toc sections should be a rarity, so this function
8545 sets a flag if any are found in toc sections other than the one just
8546 edited, so that futher hash table traversals can be avoided. */
8547
8548struct adjust_toc_info
8549{
8550 asection *toc;
8551 unsigned long *skip;
8552 bfd_boolean global_toc_syms;
8553};
8554
ba761f19
AM		 8555enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8556
c5614fa4
AM		 8557static bfd_boolean
8558adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8559{
8560 struct ppc_link_hash_entry *eh;
8561 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8562 unsigned long i;
c5614fa4 8563
c5614fa4
AM		 8564 if (h->root.type != bfd_link_hash_defined
8565 && h->root.type != bfd_link_hash_defweak)
8566 return TRUE;
8567
8568 eh = (struct ppc_link_hash_entry *) h;
8569 if (eh->adjust_done)
8570 return TRUE;
8571
8572 if (eh->elf.root.u.def.section == toc_inf->toc)
8573 {
854b41e7
AM		 8574 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8575 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8576 else
854b41e7
AM		 8577 i = eh->elf.root.u.def.value >> 3;
8578
ba761f19 8579 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8580 {
8581 (*_bfd_error_handler)
854b41e7
AM		 8582 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8583 do
8584 ++i;
ba761f19 8585 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8586 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8587 }
854b41e7
AM		 8588
8589 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8590 eh->adjust_done = 1;
8591 }
8592 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8593 toc_inf->global_toc_syms = TRUE;
8594
8595 return TRUE;
8596}
8597
560c8763
AM		 8598/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8599
8600static bfd_boolean
8601ok_lo_toc_insn (unsigned int insn)
8602{
8603 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8604 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8605 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8606 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8607 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8608 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8609 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8610 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8611 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8612 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8613 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8614 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8615 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8616 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8617 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8618 && (insn & 3) != 1)
8619 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8620 && ((insn & 3) == 0 || (insn & 3) == 3))
8621 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8622}
8623
c5614fa4
AM		 8624/* Examine all relocs referencing .toc sections in order to remove
8625 unused .toc entries. */
8626
8627bfd_boolean
33c0ec9d 8628ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8629{
8630 bfd *ibfd;
8631 struct adjust_toc_info toc_inf;
67f0cbdb 8632 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8633
67f0cbdb 8634 htab->do_toc_opt = 1;
c5614fa4 8635 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8636 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8637 {
8638 asection *toc, *sec;
8639 Elf_Internal_Shdr *symtab_hdr;
8640 Elf_Internal_Sym *local_syms;
425b145b 8641 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8642 unsigned long *skip, *drop;
8643 unsigned char *used;
8644 unsigned char *keep, last, some_unused;
8645
854b41e7
AM		 8646 if (!is_ppc64_elf (ibfd))
8647 continue;
8648
c5614fa4
AM		 8649 toc = bfd_get_section_by_name (ibfd, ".toc");
8650 if (toc == NULL
92b7a70f 8651 || toc->size == 0
dbaa2011
AM		 8652 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8653 || discarded_section (toc))
c5614fa4
AM		 8654 continue;
8655
425b145b 8656 toc_relocs = NULL;
c5614fa4 8657 local_syms = NULL;
0ffa91dd 8658 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8659
8660 /* Look at sections dropped from the final link. */
8661 skip = NULL;
8662 relstart = NULL;
8663 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8664 {
8665 if (sec->reloc_count == 0
dbaa2011 8666 || !discarded_section (sec)
c5614fa4
AM		 8667 || get_opd_info (sec)
8668 || (sec->flags & SEC_ALLOC) == 0
8669 || (sec->flags & SEC_DEBUGGING) != 0)
8670 continue;
8671
8672 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8673 if (relstart == NULL)
8674 goto error_ret;
8675
8676 /* Run through the relocs to see which toc entries might be
8677 unused. */
8678 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8679 {
8680 enum elf_ppc64_reloc_type r_type;
8681 unsigned long r_symndx;
8682 asection *sym_sec;
8683 struct elf_link_hash_entry *h;
8684 Elf_Internal_Sym *sym;
8685 bfd_vma val;
8686
8687 r_type = ELF64_R_TYPE (rel->r_info);
8688 switch (r_type)
8689 {
8690 default:
8691 continue;
8692
8693 case R_PPC64_TOC16:
8694 case R_PPC64_TOC16_LO:
8695 case R_PPC64_TOC16_HI:
8696 case R_PPC64_TOC16_HA:
8697 case R_PPC64_TOC16_DS:
8698 case R_PPC64_TOC16_LO_DS:
8699 break;
8700 }
8701
8702 r_symndx = ELF64_R_SYM (rel->r_info);
8703 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8704 r_symndx, ibfd))
8705 goto error_ret;
8706
8707 if (sym_sec != toc)
8708 continue;
8709
8710 if (h != NULL)
8711 val = h->root.u.def.value;
8712 else
8713 val = sym->st_value;
8714 val += rel->r_addend;
8715
8716 if (val >= toc->size)
8717 continue;
8718
8719 /* Anything in the toc ought to be aligned to 8 bytes.
8720 If not, don't mark as unused. */
8721 if (val & 7)
8722 continue;
8723
8724 if (skip == NULL)
8725 {
854b41e7 8726 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8727 if (skip == NULL)
8728 goto error_ret;
8729 }
8730
ba761f19 8731 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8732 }
8733
8734 if (elf_section_data (sec)->relocs != relstart)
8735 free (relstart);
8736 }
8737
ba761f19
AM		 8738 /* For largetoc loads of address constants, we can convert
8739 . addis rx,2,addr@got@ha
8740 . ld ry,addr@got@l(rx)
8741 to
8742 . addis rx,2,addr@toc@ha
8743 . addi ry,rx,addr@toc@l
8744 when addr is within 2G of the toc pointer. This then means
8745 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8746
ba761f19
AM		 8747 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8748 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8749 && toc->reloc_count != 0)
8750 {
8751 /* Read toc relocs. */
425b145b
AM		 8752 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8753 info->keep_memory);
8754 if (toc_relocs == NULL)
ba761f19
AM		 8755 goto error_ret;
8756
425b145b 8757 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8758 {
8759 enum elf_ppc64_reloc_type r_type;
8760 unsigned long r_symndx;
8761 asection *sym_sec;
8762 struct elf_link_hash_entry *h;
8763 Elf_Internal_Sym *sym;
8764 bfd_vma val, addr;
8765
8766 r_type = ELF64_R_TYPE (rel->r_info);
8767 if (r_type != R_PPC64_ADDR64)
8768 continue;
8769
8770 r_symndx = ELF64_R_SYM (rel->r_info);
8771 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8772 r_symndx, ibfd))
8773 goto error_ret;
8774
425b145b 8775 if (sym_sec == NULL
dbaa2011 8776 || discarded_section (sym_sec))
425b145b
AM		 8777 continue;
8778
afe397ea 8779 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8780 continue;
8781
8782 if (h != NULL)
bddc25c9
AM		 8783 {
8784 if (h->type == STT_GNU_IFUNC)
8785 continue;
8786 val = h->root.u.def.value;
8787 }
ba761f19 8788 else
bddc25c9
AM		 8789 {
8790 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8791 continue;
8792 val = sym->st_value;
8793 }
ba761f19
AM		 8794 val += rel->r_addend;
8795 val += sym_sec->output_section->vma + sym_sec->output_offset;
8796
8797 /* We don't yet know the exact toc pointer value, but we
8798 know it will be somewhere in the toc section. Don't
8799 optimize if the difference from any possible toc
8800 pointer is outside [ff..f80008000, 7fff7fff]. */
8801 addr = toc->output_section->vma + TOC_BASE_OFF;
8802 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8803 continue;
8804
8805 addr = toc->output_section->vma + toc->output_section->rawsize;
8806 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8807 continue;
8808
8809 if (skip == NULL)
8810 {
8811 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8812 if (skip == NULL)
8813 goto error_ret;
8814 }
8815
8816 skip[rel->r_offset >> 3]
425b145b 8817 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8818 }
ba761f19
AM		 8819 }
8820
c5614fa4
AM		 8821 if (skip == NULL)
8822 continue;
8823
8824 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8825 if (used == NULL)
8826 {
8827 error_ret:
8828 if (local_syms != NULL
8829 && symtab_hdr->contents != (unsigned char *) local_syms)
8830 free (local_syms);
8831 if (sec != NULL
8832 && relstart != NULL
8833 && elf_section_data (sec)->relocs != relstart)
8834 free (relstart);
425b145b
AM		 8835 if (toc_relocs != NULL
8836 && elf_section_data (toc)->relocs != toc_relocs)
8837 free (toc_relocs);
c5614fa4
AM		 8838 if (skip != NULL)
8839 free (skip);
8840 return FALSE;
8841 }
8842
30038c59
AM		 8843 /* Now check all kept sections that might reference the toc.
8844 Check the toc itself last. */
8845 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8846 : ibfd->sections);
c5614fa4 8847 sec != NULL;
c5614fa4 8848 sec = (sec == toc ? NULL
c5614fa4 8849 : sec->next == NULL ? toc
30038c59 8850 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8851 : sec->next))
8852 {
8853 int repeat;
8854
8855 if (sec->reloc_count == 0
dbaa2011 8856 || discarded_section (sec)
c5614fa4
AM		 8857 || get_opd_info (sec)
8858 || (sec->flags & SEC_ALLOC) == 0
8859 || (sec->flags & SEC_DEBUGGING) != 0)
8860 continue;
8861
854b41e7
AM		 8862 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8863 info->keep_memory);
c5614fa4 8864 if (relstart == NULL)
2915c55b
JK		 8865 {
8866 free (used);
8867 goto error_ret;
8868 }
c5614fa4
AM		 8869
8870 /* Mark toc entries referenced as used. */
c5614fa4 8871 do
d4f1ee75
AM		 8872 {
8873 repeat = 0;
8874 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8875 {
8876 enum elf_ppc64_reloc_type r_type;
8877 unsigned long r_symndx;
8878 asection *sym_sec;
8879 struct elf_link_hash_entry *h;
8880 Elf_Internal_Sym *sym;
8881 bfd_vma val;
8882 enum {no_check, check_lo, check_ha} insn_check;
98528052 8883
d4f1ee75
AM		 8884 r_type = ELF64_R_TYPE (rel->r_info);
8885 switch (r_type)
8886 {
8887 default:
8888 insn_check = no_check;
8889 break;
98528052 8890
d4f1ee75
AM		 8891 case R_PPC64_GOT_TLSLD16_HA:
8892 case R_PPC64_GOT_TLSGD16_HA:
8893 case R_PPC64_GOT_TPREL16_HA:
8894 case R_PPC64_GOT_DTPREL16_HA:
8895 case R_PPC64_GOT16_HA:
8896 case R_PPC64_TOC16_HA:
8897 insn_check = check_ha;
8898 break;
98528052 8899
d4f1ee75
AM		 8900 case R_PPC64_GOT_TLSLD16_LO:
8901 case R_PPC64_GOT_TLSGD16_LO:
8902 case R_PPC64_GOT_TPREL16_LO_DS:
8903 case R_PPC64_GOT_DTPREL16_LO_DS:
8904 case R_PPC64_GOT16_LO:
8905 case R_PPC64_GOT16_LO_DS:
8906 case R_PPC64_TOC16_LO:
8907 case R_PPC64_TOC16_LO_DS:
8908 insn_check = check_lo;
8909 break;
8910 }
560c8763 8911
d4f1ee75
AM		 8912 if (insn_check != no_check)
8913 {
8914 bfd_vma off = rel->r_offset & ~3;
8915 unsigned char buf[4];
8916 unsigned int insn;
c5614fa4 8917
d4f1ee75
AM		 8918 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8919 {
8920 free (used);
8921 goto error_ret;
8922 }
8923 insn = bfd_get_32 (ibfd, buf);
8924 if (insn_check == check_lo
8925 ? !ok_lo_toc_insn (insn)
8926 : ((insn & ((0x3f << 26) | 0x1f << 16))
8927 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8928 {
8929 char str[12];
8930
8931 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8932 sprintf (str, "%#08x", insn);
8933 info->callbacks->einfo
8934 (_("%P: %H: toc optimization is not supported for"
8935 " %s instruction.\n"),
8936 ibfd, sec, rel->r_offset & ~3, str);
8937 }
8938 }
c5614fa4 8939
d4f1ee75
AM		 8940 switch (r_type)
8941 {
8942 case R_PPC64_TOC16:
8943 case R_PPC64_TOC16_LO:
8944 case R_PPC64_TOC16_HI:
8945 case R_PPC64_TOC16_HA:
8946 case R_PPC64_TOC16_DS:
8947 case R_PPC64_TOC16_LO_DS:
8948 /* In case we're taking addresses of toc entries. */
8949 case R_PPC64_ADDR64:
8950 break;
c5614fa4 8951
d4f1ee75
AM		 8952 default:
8953 continue;
8954 }
c5614fa4 8955
d4f1ee75
AM		 8956 r_symndx = ELF64_R_SYM (rel->r_info);
8957 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8958 r_symndx, ibfd))
8959 {
8960 free (used);
8961 goto error_ret;
8962 }
c5614fa4 8963
d4f1ee75
AM		 8964 if (sym_sec != toc)
8965 continue;
c5614fa4 8966
d4f1ee75
AM		 8967 if (h != NULL)
8968 val = h->root.u.def.value;
8969 else
8970 val = sym->st_value;
8971 val += rel->r_addend;
ba761f19 8972
d4f1ee75
AM		 8973 if (val >= toc->size)
8974 continue;
ba761f19 8975
d4f1ee75
AM		 8976 if ((skip[val >> 3] & can_optimize) != 0)
8977 {
8978 bfd_vma off;
8979 unsigned char opc;
8980
8981 switch (r_type)
8982 {
8983 case R_PPC64_TOC16_HA:
ba761f19 8984 break;
ba761f19 8985
d4f1ee75
AM		 8986 case R_PPC64_TOC16_LO_DS:
8987 off = rel->r_offset;
8988 off += (bfd_big_endian (ibfd) ? -2 : 3);
8989 if (!bfd_get_section_contents (ibfd, sec, &opc,
8990 off, 1))
8991 {
8992 free (used);
8993 goto error_ret;
8994 }
8995 if ((opc & (0x3f << 2)) == (58u << 2))
8996 break;
8997 /* Fall thru */
ba761f19 8998
d4f1ee75
AM		 8999 default:
9000 /* Wrong sort of reloc, or not a ld. We may
9001 as well clear ref_from_discarded too. */
9002 skip[val >> 3] = 0;
9003 }
9004 }
9005
9006 if (sec != toc)
9007 used[val >> 3] = 1;
9008 /* For the toc section, we only mark as used if this
9009 entry itself isn't unused. */
9010 else if ((used[rel->r_offset >> 3]
9011 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9012 && !used[val >> 3])
9013 {
9014 /* Do all the relocs again, to catch reference
9015 chains. */
9016 repeat = 1;
9017 used[val >> 3] = 1;
9018 }
9019 }
9020 }
c5614fa4 9021 while (repeat);
854b41e7
AM		 9022
9023 if (elf_section_data (sec)->relocs != relstart)
9024 free (relstart);
c5614fa4
AM		 9025 }
9026
9027 /* Merge the used and skip arrays. Assume that TOC
9028 doublewords not appearing as either used or unused belong
9029 to to an entry more than one doubleword in size. */
9030 for (drop = skip, keep = used, last = 0, some_unused = 0;
9031 drop < skip + (toc->size + 7) / 8;
9032 ++drop, ++keep)
9033 {
9034 if (*keep)
9035 {
ba761f19
AM		 9036 *drop &= ~ref_from_discarded;
9037 if ((*drop & can_optimize) != 0)
9038 some_unused = 1;
c5614fa4
AM		 9039 last = 0;
9040 }
b140b010 9041 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9042 {
9043 some_unused = 1;
ba761f19 9044 last = ref_from_discarded;
c5614fa4
AM		 9045 }
9046 else
9047 *drop = last;
9048 }
9049
9050 free (used);
9051
9052 if (some_unused)
9053 {
9054 bfd_byte *contents, *src;
9055 unsigned long off;
d62b3684 9056 Elf_Internal_Sym *sym;
ba761f19 9057 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9058
9059 /* Shuffle the toc contents, and at the same time convert the
9060 skip array from booleans into offsets. */
9061 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9062 goto error_ret;
9063
9064 elf_section_data (toc)->this_hdr.contents = contents;
9065
9066 for (src = contents, off = 0, drop = skip;
9067 src < contents + toc->size;
9068 src += 8, ++drop)
9069 {
ba761f19
AM		 9070 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9071 off += 8;
c5614fa4
AM		 9072 else if (off != 0)
9073 {
9074 *drop = off;
9075 memcpy (src - off, src, 8);
9076 }
9077 }
854b41e7 9078 *drop = off;
c5614fa4
AM		 9079 toc->rawsize = toc->size;
9080 toc->size = src - contents - off;
9081
ba761f19
AM		 9082 /* Adjust addends for relocs against the toc section sym,
9083 and optimize any accesses we can. */
c5614fa4
AM		 9084 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9085 {
9086 if (sec->reloc_count == 0
dbaa2011 9087 || discarded_section (sec))
c5614fa4
AM		 9088 continue;
9089
9090 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9091 info->keep_memory);
c5614fa4
AM		 9092 if (relstart == NULL)
9093 goto error_ret;
9094
9095 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9096 {
9097 enum elf_ppc64_reloc_type r_type;
9098 unsigned long r_symndx;
9099 asection *sym_sec;
9100 struct elf_link_hash_entry *h;
854b41e7 9101 bfd_vma val;
c5614fa4
AM		 9102
9103 r_type = ELF64_R_TYPE (rel->r_info);
9104 switch (r_type)
9105 {
9106 default:
9107 continue;
9108
9109 case R_PPC64_TOC16:
9110 case R_PPC64_TOC16_LO:
9111 case R_PPC64_TOC16_HI:
9112 case R_PPC64_TOC16_HA:
9113 case R_PPC64_TOC16_DS:
9114 case R_PPC64_TOC16_LO_DS:
9115 case R_PPC64_ADDR64:
9116 break;
9117 }
9118
9119 r_symndx = ELF64_R_SYM (rel->r_info);
9120 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9121 r_symndx, ibfd))
9122 goto error_ret;
9123
ba761f19 9124 if (sym_sec != toc)
c5614fa4
AM		 9125 continue;
9126
ba761f19
AM		 9127 if (h != NULL)
9128 val = h->root.u.def.value;
9129 else
9130 {
9131 val = sym->st_value;
9132 if (val != 0)
9133 local_toc_syms = TRUE;
9134 }
9135
9136 val += rel->r_addend;
854b41e7
AM		 9137
9138 if (val > toc->rawsize)
9139 val = toc->rawsize;
ba761f19
AM		 9140 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9141 continue;
9142 else if ((skip[val >> 3] & can_optimize) != 0)
9143 {
9144 Elf_Internal_Rela *tocrel
425b145b 9145 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9146 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9147
9148 switch (r_type)
9149 {
9150 case R_PPC64_TOC16_HA:
9151 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9152 break;
9153
9154 case R_PPC64_TOC16_LO_DS:
9155 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9156 break;
9157
9158 default:
28942f62
AM		 9159 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9160 ppc_howto_init ();
b140b010 9161 info->callbacks->einfo
bc30df16 9162 (_("%P: %H: %s references "
b140b010
AM		 9163 "optimized away TOC entry\n"),
9164 ibfd, sec, rel->r_offset,
9165 ppc64_elf_howto_table[r_type]->name);
9166 bfd_set_error (bfd_error_bad_value);
9167 goto error_ret;
ba761f19
AM		 9168 }
9169 rel->r_addend = tocrel->r_addend;
9170 elf_section_data (sec)->relocs = relstart;
9171 continue;
9172 }
9173
9174 if (h != NULL || sym->st_value != 0)
9175 continue;
854b41e7
AM		 9176
9177 rel->r_addend -= skip[val >> 3];
9178 elf_section_data (sec)->relocs = relstart;
c5614fa4 9179 }
854b41e7
AM		 9180
9181 if (elf_section_data (sec)->relocs != relstart)
9182 free (relstart);
c5614fa4
AM		 9183 }
9184
9185 /* We shouldn't have local or global symbols defined in the TOC,
9186 but handle them anyway. */
df22d223
AM		 9187 if (local_syms != NULL)
9188 for (sym = local_syms;
9189 sym < local_syms + symtab_hdr->sh_info;
9190 ++sym)
9191 if (sym->st_value != 0
9192 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9193 {
9194 unsigned long i;
854b41e7 9195
df22d223
AM		 9196 if (sym->st_value > toc->rawsize)
9197 i = toc->rawsize >> 3;
9198 else
9199 i = sym->st_value >> 3;
854b41e7 9200
df22d223
AM		 9201 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9202 {
9203 if (local_toc_syms)
9204 (*_bfd_error_handler)
9205 (_("%s defined on removed toc entry"),
9206 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9207 do
9208 ++i;
9209 while ((skip[i] & (ref_from_discarded | can_optimize)));
9210 sym->st_value = (bfd_vma) i << 3;
9211 }
d62b3684 9212
df22d223
AM		 9213 sym->st_value -= skip[i];
9214 symtab_hdr->contents = (unsigned char *) local_syms;
9215 }
c5614fa4 9216
854b41e7 9217 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9218 if (toc_inf.global_toc_syms)
9219 {
9220 toc_inf.toc = toc;
9221 toc_inf.skip = skip;
9222 toc_inf.global_toc_syms = FALSE;
9223 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9224 &toc_inf);
9225 }
854b41e7
AM		 9226
9227 if (toc->reloc_count != 0)
9228 {
d4730f92 9229 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9230 Elf_Internal_Rela *wrel;
9231 bfd_size_type sz;
9232
854b41e7 9233 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9234 if (toc_relocs == NULL)
9235 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9236 info->keep_memory);
9237 if (toc_relocs == NULL)
9238 goto error_ret;
9239
425b145b
AM		 9240 wrel = toc_relocs;
9241 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9242 if ((skip[rel->r_offset >> 3]
9243 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9244 {
9245 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9246 wrel->r_info = rel->r_info;
9247 wrel->r_addend = rel->r_addend;
9248 ++wrel;
9249 }
9250 else if (!dec_dynrel_count (rel->r_info, toc, info,
9251 &local_syms, NULL, NULL))
9252 goto error_ret;
9253
425b145b
AM		 9254 elf_section_data (toc)->relocs = toc_relocs;
9255 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9256 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9257 sz = rel_hdr->sh_entsize;
9258 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9259 }
c5614fa4 9260 }
28be611c
AM		 9261 else if (toc_relocs != NULL
9262 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9263 free (toc_relocs);
c5614fa4
AM		 9264
9265 if (local_syms != NULL
9266 && symtab_hdr->contents != (unsigned char *) local_syms)
9267 {
9268 if (!info->keep_memory)
9269 free (local_syms);
9270 else
9271 symtab_hdr->contents = (unsigned char *) local_syms;
9272 }
9273 free (skip);
9274 }
9275
9276 return TRUE;
9277}
9278
1bbe0902
AM		 9279/* Return true iff input section I references the TOC using
9280 instructions limited to +/-32k offsets. */
9281
9282bfd_boolean
9283ppc64_elf_has_small_toc_reloc (asection *i)
9284{
9285 return (is_ppc64_elf (i->owner)
9286 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9287}
9288
927be08e
AM		 9289/* Allocate space for one GOT entry. */
9290
9291static void
9292allocate_got (struct elf_link_hash_entry *h,
9293 struct bfd_link_info *info,
9294 struct got_entry *gent)
9295{
9296 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9297 bfd_boolean dyn;
9298 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9299 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9300 ? 16 : 8);
9301 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9302 ? 2 : 1) * sizeof (Elf64_External_Rela);
9303 asection *got = ppc64_elf_tdata (gent->owner)->got;
9304
9305 gent->got.offset = got->size;
9306 got->size += entsize;
9307
9308 dyn = htab->elf.dynamic_sections_created;
19e08130 9309 if (h->type == STT_GNU_IFUNC)
927be08e 9310 {
33e44f2e 9311 htab->elf.irelplt->size += rentsize;
19e08130 9312 htab->got_reli_size += rentsize;
927be08e 9313 }
19e08130
AM		 9314 else if ((info->shared
9315 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9316 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9317 || h->root.type != bfd_link_hash_undefweak))
927be08e 9318 {
19e08130 9319 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9320 relgot->size += rentsize;
927be08e
AM		 9321 }
9322}
9323
7865406b
AM		 9324/* This function merges got entries in the same toc group. */
9325
9326static void
9327merge_got_entries (struct got_entry **pent)
9328{
9329 struct got_entry *ent, *ent2;
9330
9331 for (ent = *pent; ent != NULL; ent = ent->next)
9332 if (!ent->is_indirect)
9333 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9334 if (!ent2->is_indirect
9335 && ent2->addend == ent->addend
9336 && ent2->tls_type == ent->tls_type
9337 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9338 {
9339 ent2->is_indirect = TRUE;
9340 ent2->got.ent = ent;
9341 }
9342}
9343
65f38f15
AM		 9344/* Allocate space in .plt, .got and associated reloc sections for
9345 dynamic relocs. */
5bd4f169 9346
b34976b6 9347static bfd_boolean
4ce794b7 9348allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9349{
65f38f15
AM		 9350 struct bfd_link_info *info;
9351 struct ppc_link_hash_table *htab;
5bd4f169 9352 asection *s;
65f38f15 9353 struct ppc_link_hash_entry *eh;
6061a67d 9354 struct elf_dyn_relocs *p;
0b8bcf0d 9355 struct got_entry **pgent, *gent;
5bd4f169 9356
e92d460e 9357 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9358 return TRUE;
5bd4f169 9359
65f38f15
AM		 9360 info = (struct bfd_link_info *) inf;
9361 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9362 if (htab == NULL)
9363 return FALSE;
5bd4f169 9364
e054468f
AM		 9365 if ((htab->elf.dynamic_sections_created
9366 && h->dynindx != -1
9367 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9368 || h->type == STT_GNU_IFUNC)
5bd4f169 9369 {
411e1bfb
AM		 9370 struct plt_entry *pent;
9371 bfd_boolean doneone = FALSE;
9372 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9373 if (pent->plt.refcount > 0)
9374 {
25f23106
AM		 9375 if (!htab->elf.dynamic_sections_created
9376 || h->dynindx == -1)
e054468f 9377 {
33e44f2e 9378 s = htab->elf.iplt;
e054468f 9379 pent->plt.offset = s->size;
b9e5796b 9380 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9381 s = htab->elf.irelplt;
e054468f
AM		 9382 }
9383 else
9384 {
9385 /* If this is the first .plt entry, make room for the special
9386 first entry. */
33e44f2e 9387 s = htab->elf.splt;
e054468f 9388 if (s->size == 0)
b9e5796b 9389 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9390
9391 pent->plt.offset = s->size;
9392
9393 /* Make room for this entry. */
b9e5796b 9394 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9395
9396 /* Make room for the .glink code. */
9397 s = htab->glink;
9398 if (s->size == 0)
9399 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9400 if (htab->opd_abi)
9401 {
9402 /* We need bigger stubs past index 32767. */
9403 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9404 s->size += 4;
9405 s->size += 2*4;
9406 }
9407 else
e054468f 9408 s->size += 4;
e054468f
AM		 9409
9410 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9411 s = htab->elf.srelplt;
e054468f 9412 }
eea6121a 9413 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9414 doneone = TRUE;
9415 }
9416 else
9417 pent->plt.offset = (bfd_vma) -1;
9418 if (!doneone)
65f38f15 9419 {
411e1bfb 9420 h->plt.plist = NULL;
f5385ebf 9421 h->needs_plt = 0;
65f38f15
AM		 9422 }
9423 }
9424 else
9425 {
411e1bfb 9426 h->plt.plist = NULL;
f5385ebf 9427 h->needs_plt = 0;
65f38f15
AM		 9428 }
9429
951fd09b
AM		 9430 eh = (struct ppc_link_hash_entry *) h;
9431 /* Run through the TLS GD got entries first if we're changing them
9432 to TPREL. */
e7b938ca 9433 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9434 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9435 if (gent->got.refcount > 0
9436 && (gent->tls_type & TLS_GD) != 0)
9437 {
9438 /* This was a GD entry that has been converted to TPREL. If
9439 there happens to be a TPREL entry we can use that one. */
9440 struct got_entry *ent;
9441 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9442 if (ent->got.refcount > 0
9443 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9444 && ent->addend == gent->addend
9445 && ent->owner == gent->owner)
951fd09b
AM		 9446 {
9447 gent->got.refcount = 0;
9448 break;
9449 }
9450
9451 /* If not, then we'll be using our own TPREL entry. */
9452 if (gent->got.refcount != 0)
9453 gent->tls_type = TLS_TLS | TLS_TPREL;
9454 }
9455
7865406b
AM		 9456 /* Remove any list entry that won't generate a word in the GOT before
9457 we call merge_got_entries. Otherwise we risk merging to empty
9458 entries. */
0b8bcf0d
AM		 9459 pgent = &h->got.glist;
9460 while ((gent = *pgent) != NULL)
411e1bfb 9461 if (gent->got.refcount > 0)
7865406b
AM		 9462 {
9463 if ((gent->tls_type & TLS_LD) != 0
9464 && !h->def_dynamic)
9465 {
9466 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9467 *pgent = gent->next;
9468 }
9469 else
9470 pgent = &gent->next;
9471 }
9472 else
9473 *pgent = gent->next;
9474
9475 if (!htab->do_multi_toc)
9476 merge_got_entries (&h->got.glist);
9477
9478 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9479 if (!gent->is_indirect)
411e1bfb
AM		 9480 {
9481 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9482 Undefined weak syms won't yet be marked as dynamic,
9483 nor will all TLS symbols. */
411e1bfb 9484 if (h->dynindx == -1
b099ab9f 9485 && !h->forced_local
25f23106 9486 && h->type != STT_GNU_IFUNC
b099ab9f 9487 && htab->elf.dynamic_sections_created)
411e1bfb 9488 {
c152c796 9489 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9490 return FALSE;
9491 }
65f38f15 9492
0c8d6e5c 9493 if (!is_ppc64_elf (gent->owner))
927be08e 9494 abort ();
0ffa91dd 9495
927be08e 9496 allocate_got (h, info, gent);
411e1bfb 9497 }
65f38f15 9498
b099ab9f 9499 if (eh->dyn_relocs == NULL
25f23106 9500 || (!htab->elf.dynamic_sections_created
14b5f73f 9501 && h->type != STT_GNU_IFUNC))
b34976b6 9502 return TRUE;
65f38f15
AM		 9503
9504 /* In the shared -Bsymbolic case, discard space allocated for
9505 dynamic pc-relative relocs against symbols which turn out to be
9506 defined in regular objects. For the normal shared case, discard
9507 space for relocs that have become local due to symbol visibility
9508 changes. */
9509
9510 if (info->shared)
9511 {
9c7a29a3 9512 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9513 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9514 generated via assembly. We want calls to protected symbols to
9515 resolve directly to the function rather than going via the plt.
9516 If people want function pointer comparisons to work as expected
9517 then they should avoid writing weird assembly. */
09695f56 9518 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9519 {
6061a67d 9520 struct elf_dyn_relocs **pp;
65f38f15
AM		 9521
9522 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9523 {
65f38f15
AM		 9524 p->count -= p->pc_count;
9525 p->pc_count = 0;
9526 if (p->count == 0)
9527 *pp = p->next;
9528 else
9529 pp = &p->next;
5bd4f169 9530 }
65f38f15 9531 }
4e795f50
AM		 9532
9533 /* Also discard relocs on undefined weak syms with non-default
9534 visibility. */
cab87ef9
AM		 9535 if (eh->dyn_relocs != NULL
9536 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9537 {
9538 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9539 eh->dyn_relocs = NULL;
9540
9541 /* Make sure this symbol is output as a dynamic symbol.
9542 Undefined weak syms won't yet be marked as dynamic. */
9543 else if (h->dynindx == -1
9544 && !h->forced_local)
9545 {
9546 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9547 return FALSE;
9548 }
9549 }
65f38f15 9550 }
25f23106
AM		 9551 else if (h->type == STT_GNU_IFUNC)
9552 {
9553 if (!h->non_got_ref)
9554 eh->dyn_relocs = NULL;
9555 }
f4656909 9556 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9557 {
9558 /* For the non-shared case, discard space for relocs against
9559 symbols which turn out to need copy relocs or are not
9560 dynamic. */
9561
f5385ebf 9562 if (!h->non_got_ref
f5385ebf 9563 && !h->def_regular)
65f38f15
AM		 9564 {
9565 /* Make sure this symbol is output as a dynamic symbol.
9566 Undefined weak syms won't yet be marked as dynamic. */
9567 if (h->dynindx == -1
f5385ebf 9568 && !h->forced_local)
65f38f15 9569 {
c152c796 9570 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9571 return FALSE;
65f38f15
AM		 9572 }
9573
9574 /* If that succeeded, we know we'll be keeping all the
9575 relocs. */
9576 if (h->dynindx != -1)
9577 goto keep;
9578 }
9579
9580 eh->dyn_relocs = NULL;
9581
ec338859 9582 keep: ;
65f38f15
AM		 9583 }
9584
9585 /* Finally, allocate space. */
9586 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9587 {
9588 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9589 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9590 sreloc = htab->elf.irelplt;
eea6121a 9591 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9592 }
9593
b34976b6 9594 return TRUE;
65f38f15
AM		 9595}
9596
a345bc8d
AM		 9597/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9598 to set up space for global entry stubs. These are put in glink,
9599 after the branch table. */
65f38f15 9600
b34976b6 9601static bfd_boolean
a345bc8d 9602size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9603{
a345bc8d
AM		 9604 struct bfd_link_info *info;
9605 struct ppc_link_hash_table *htab;
9606 struct plt_entry *pent;
9607 asection *s;
65f38f15 9608
a345bc8d
AM		 9609 if (h->root.type == bfd_link_hash_indirect)
9610 return TRUE;
65f38f15 9611
a345bc8d
AM		 9612 if (!h->pointer_equality_needed)
9613 return TRUE;
65f38f15 9614
a345bc8d
AM		 9615 if (h->def_regular)
9616 return TRUE;
65f38f15 9617
a345bc8d
AM		 9618 info = inf;
9619 htab = ppc_hash_table (info);
9620 if (htab == NULL)
9621 return FALSE;
9622
9623 s = htab->glink;
9624 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9625 if (pent->plt.offset != (bfd_vma) -1
9626 && pent->addend == 0)
9627 {
afe397ea
AM		 9628 /* For ELFv2, if this symbol is not defined in a regular file
9629 and we are not generating a shared library or pie, then we
9630 need to define the symbol in the executable on a call stub.
9631 This is to avoid text relocations. */
a345bc8d 9632 s->size = (s->size + 15) & -16;
afe397ea
AM		 9633 h->root.u.def.section = s;
9634 h->root.u.def.value = s->size;
a345bc8d
AM		 9635 s->size += 16;
9636 break;
9637 }
9638 return TRUE;
9639}
9640
9641/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9642 read-only sections. */
9643
9644static bfd_boolean
9645maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9646{
9647 if (h->root.type == bfd_link_hash_indirect)
9648 return TRUE;
9649
9650 if (readonly_dynrelocs (h))
9651 {
9652 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9653
9654 /* Not an error, just cut short the traversal. */
9655 return FALSE;
65f38f15 9656 }
b34976b6 9657 return TRUE;
65f38f15
AM		 9658}
9659
9660/* Set the sizes of the dynamic sections. */
9661
b34976b6 9662static bfd_boolean
ee67d69a 9663ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9664 struct bfd_link_info *info)
65f38f15
AM		 9665{
9666 struct ppc_link_hash_table *htab;
9667 bfd *dynobj;
9668 asection *s;
b34976b6 9669 bfd_boolean relocs;
65f38f15 9670 bfd *ibfd;
7865406b 9671 struct got_entry *first_tlsld;
65f38f15
AM		 9672
9673 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9674 if (htab == NULL)
9675 return FALSE;
9676
65f38f15
AM		 9677 dynobj = htab->elf.dynobj;
9678 if (dynobj == NULL)
9679 abort ();
9680
9681 if (htab->elf.dynamic_sections_created)
9682 {
9683 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9684 if (info->executable)
65f38f15 9685 {
3d4d4302 9686 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9687 if (s == NULL)
9688 abort ();
eea6121a 9689 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9690 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9691 }
9692 }
9693
9694 /* Set up .got offsets for local syms, and space for local dynamic
9695 relocs. */
c72f2fb2 9696 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9697 {
411e1bfb
AM		 9698 struct got_entry **lgot_ents;
9699 struct got_entry **end_lgot_ents;
e054468f
AM		 9700 struct plt_entry **local_plt;
9701 struct plt_entry **end_local_plt;
f961d9dd 9702 unsigned char *lgot_masks;
65f38f15
AM		 9703 bfd_size_type locsymcount;
9704 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9705
0c8d6e5c 9706 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9707 continue;
9708
9709 for (s = ibfd->sections; s != NULL; s = s->next)
9710 {
19e08130 9711 struct ppc_dyn_relocs *p;
65f38f15 9712
6edfbbad 9713 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9714 {
ec338859
AM		 9715 if (!bfd_is_abs_section (p->sec)
9716 && bfd_is_abs_section (p->sec->output_section))
9717 {
9718 /* Input section has been discarded, either because
9719 it is a copy of a linkonce section or due to
9720 linker script /DISCARD/, so we'll be discarding
9721 the relocs too. */
9722 }
248866a8 9723 else if (p->count != 0)
ec338859 9724 {
19e08130
AM		 9725 asection *srel = elf_section_data (p->sec)->sreloc;
9726 if (p->ifunc)
33e44f2e 9727 srel = htab->elf.irelplt;
eea6121a 9728 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9729 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9730 info->flags |= DF_TEXTREL;
ec338859 9731 }
65f38f15
AM		 9732 }
9733 }
9734
411e1bfb
AM		 9735 lgot_ents = elf_local_got_ents (ibfd);
9736 if (!lgot_ents)
65f38f15
AM		 9737 continue;
9738
0ffa91dd 9739 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9740 locsymcount = symtab_hdr->sh_info;
411e1bfb 9741 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9742 local_plt = (struct plt_entry **) end_lgot_ents;
9743 end_local_plt = local_plt + locsymcount;
f961d9dd 9744 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9745 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9746 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9747 {
0b8bcf0d 9748 struct got_entry **pent, *ent;
411e1bfb 9749
0b8bcf0d
AM		 9750 pent = lgot_ents;
9751 while ((ent = *pent) != NULL)
411e1bfb
AM		 9752 if (ent->got.refcount > 0)
9753 {
e7b938ca 9754 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9755 {
927be08e 9756 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9757 *pent = ent->next;
411e1bfb
AM		 9758 }
9759 else
9760 {
19e08130
AM		 9761 unsigned int ent_size = 8;
9762 unsigned int rel_size = sizeof (Elf64_External_Rela);
9763
eea6121a 9764 ent->got.offset = s->size;
e7b938ca 9765 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9766 {
19e08130
AM		 9767 ent_size *= 2;
9768 rel_size *= 2;
9769 }
9770 s->size += ent_size;
9771 if ((*lgot_masks & PLT_IFUNC) != 0)
9772 {
33e44f2e 9773 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9774 htab->got_reli_size += rel_size;
9775 }
9776 else if (info->shared)
9777 {
9778 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9779 srel->size += rel_size;
927be08e 9780 }
0b8bcf0d 9781 pent = &ent->next;
411e1bfb
AM		 9782 }
9783 }
9784 else
0b8bcf0d 9785 *pent = ent->next;
65f38f15 9786 }
e054468f
AM		 9787
9788 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9789 for (; local_plt < end_local_plt; ++local_plt)
9790 {
9791 struct plt_entry *ent;
9792
9793 for (ent = *local_plt; ent != NULL; ent = ent->next)
9794 if (ent->plt.refcount > 0)
9795 {
33e44f2e 9796 s = htab->elf.iplt;
e054468f 9797 ent->plt.offset = s->size;
b9e5796b 9798 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9799
33e44f2e 9800 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9801 }
9802 else
9803 ent->plt.offset = (bfd_vma) -1;
9804 }
65f38f15
AM		 9805 }
9806
9807 /* Allocate global sym .plt and .got entries, and space for global
9808 sym dynamic relocs. */
4ce794b7 9809 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9810 /* Stash the end of glink branch table. */
9811 if (htab->glink != NULL)
9812 htab->glink->rawsize = htab->glink->size;
9813
9814 if (!htab->opd_abi && !info->shared)
9815 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9816
7865406b 9817 first_tlsld = NULL;
c72f2fb2 9818 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9819 {
7865406b
AM		 9820 struct got_entry *ent;
9821
0c8d6e5c 9822 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9823 continue;
9824
7865406b
AM		 9825 ent = ppc64_tlsld_got (ibfd);
9826 if (ent->got.refcount > 0)
102890f0 9827 {
7865406b 9828 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9829 {
7865406b
AM		 9830 ent->is_indirect = TRUE;
9831 ent->got.ent = first_tlsld;
9832 }
9833 else
9834 {
9835 if (first_tlsld == NULL)
9836 first_tlsld = ent;
9837 s = ppc64_elf_tdata (ibfd)->got;
9838 ent->got.offset = s->size;
9839 ent->owner = ibfd;
9840 s->size += 16;
9841 if (info->shared)
9842 {
9843 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9844 srel->size += sizeof (Elf64_External_Rela);
9845 }
102890f0
AM		 9846 }
9847 }
9848 else
7865406b 9849 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9850 }
9851
65f38f15
AM		 9852 /* We now have determined the sizes of the various dynamic sections.
9853 Allocate memory for them. */
b34976b6 9854 relocs = FALSE;
65f38f15
AM		 9855 for (s = dynobj->sections; s != NULL; s = s->next)
9856 {
9857 if ((s->flags & SEC_LINKER_CREATED) == 0)
9858 continue;
9859
4ce794b7 9860 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9861 /* These haven't been allocated yet; don't strip. */
9862 continue;
33e44f2e
AM		 9863 else if (s == htab->elf.sgot
9864 || s == htab->elf.splt
9865 || s == htab->elf.iplt
c456f082
AM		 9866 || s == htab->glink
9867 || s == htab->dynbss)
65f38f15
AM		 9868 {
9869 /* Strip this section if we don't need it; see the
9870 comment below. */
5bd4f169 9871 }
58d180e8
AM		 9872 else if (s == htab->glink_eh_frame)
9873 {
9874 if (!bfd_is_abs_section (s->output_section))
9875 /* Not sized yet. */
9876 continue;
9877 }
70cc837d 9878 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9879 {
c456f082 9880 if (s->size != 0)
5bd4f169 9881 {
33e44f2e 9882 if (s != htab->elf.srelplt)
b34976b6 9883 relocs = TRUE;
5bd4f169
AM		 9884
9885 /* We use the reloc_count field as a counter if we need
9886 to copy relocs into the output file. */
9887 s->reloc_count = 0;
9888 }
9889 }
65f38f15 9890 else
5bd4f169
AM		 9891 {
9892 /* It's not one of our sections, so don't allocate space. */
9893 continue;
9894 }
9895
eea6121a 9896 if (s->size == 0)
5bd4f169 9897 {
c456f082
AM		 9898 /* If we don't need this section, strip it from the
9899 output file. This is mostly to handle .rela.bss and
9900 .rela.plt. We must create both sections in
9901 create_dynamic_sections, because they must be created
9902 before the linker maps input sections to output
9903 sections. The linker does that before
9904 adjust_dynamic_symbol is called, and it is that
9905 function which decides whether anything needs to go
9906 into these sections. */
8423293d 9907 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9908 continue;
9909 }
9910
c456f082 9911 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9912 continue;
9913
65f38f15
AM		 9914 /* Allocate memory for the section contents. We use bfd_zalloc
9915 here in case unused entries are not reclaimed before the
9916 section's contents are written out. This should not happen,
411e1bfb
AM		 9917 but this way if it does we get a R_PPC64_NONE reloc in .rela
9918 sections instead of garbage.
9919 We also rely on the section contents being zero when writing
9920 the GOT. */
eea6121a 9921 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9922 if (s->contents == NULL)
b34976b6 9923 return FALSE;
5bd4f169
AM		 9924 }
9925
c72f2fb2 9926 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9927 {
0c8d6e5c 9928 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9929 continue;
9930
e717da7e 9931 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9932 if (s != NULL && s != htab->elf.sgot)
e717da7e 9933 {
eea6121a 9934 if (s->size == 0)
8423293d 9935 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9936 else
9937 {
eea6121a 9938 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9939 if (s->contents == NULL)
9940 return FALSE;
9941 }
9942 }
9943 s = ppc64_elf_tdata (ibfd)->relgot;
9944 if (s != NULL)
9945 {
eea6121a 9946 if (s->size == 0)
8423293d 9947 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9948 else
9949 {
eea6121a 9950 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9951 if (s->contents == NULL)
9952 return FALSE;
9953 relocs = TRUE;
9954 s->reloc_count = 0;
9955 }
9956 }
9957 }
9958
e86ce104 9959 if (htab->elf.dynamic_sections_created)
5bd4f169 9960 {
e8910a83
AM		 9961 bfd_boolean tls_opt;
9962
5bd4f169
AM		 9963 /* Add some entries to the .dynamic section. We fill in the
9964 values later, in ppc64_elf_finish_dynamic_sections, but we
9965 must add the entries now so that we get the correct size for
9966 the .dynamic section. The DT_DEBUG entry is filled in by the
9967 dynamic linker and used by the debugger. */
dc810e39 9968#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9969 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9970
36af4a4e 9971 if (info->executable)
5bd4f169 9972 {
dc810e39 9973 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9974 return FALSE;
5bd4f169
AM		 9975 }
9976
33e44f2e 9977 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 9978 {
dc810e39
AM		 9979 if (!add_dynamic_entry (DT_PLTGOT, 0)
9980 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9981 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 9982 || !add_dynamic_entry (DT_JMPREL, 0)
9983 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 9984 return FALSE;
5bd4f169
AM		 9985 }
9986
ee67d69a 9987 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 9988 {
9989 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9990 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 9991 return FALSE;
19397422
AM		 9992 }
9993
e7d1c40c 9994 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 9995 && htab->tls_get_addr_fd != NULL
9996 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9997 if (tls_opt || !htab->opd_abi)
9998 {
9999 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10000 return FALSE;
10001 }
a7f2871e 10002
5bd4f169
AM		 10003 if (relocs)
10004 {
dc810e39
AM		 10005 if (!add_dynamic_entry (DT_RELA, 0)
10006 || !add_dynamic_entry (DT_RELASZ, 0)
10007 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10008 return FALSE;
5bd4f169 10009
65f38f15
AM		 10010 /* If any dynamic relocs apply to a read-only section,
10011 then we need a DT_TEXTREL entry. */
248866a8 10012 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10013 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10014
65f38f15 10015 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10016 {
65f38f15 10017 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10018 return FALSE;
5bd4f169 10019 }
5bd4f169 10020 }
5bd4f169 10021 }
65f38f15 10022#undef add_dynamic_entry
5bd4f169 10023
b34976b6 10024 return TRUE;
5bd4f169
AM		 10025}
10026
a345bc8d
AM		 10027/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10028
10029static bfd_boolean
10030ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10031{
10032 if (h->plt.plist != NULL
10033 && !h->def_regular
10034 && !h->pointer_equality_needed)
10035 return FALSE;
10036
10037 return _bfd_elf_hash_symbol (h);
10038}
10039
721956f4 10040/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10041
4ce794b7
AM		 10042static inline enum ppc_stub_type
10043ppc_type_of_stub (asection *input_sec,
10044 const Elf_Internal_Rela *rel,
10045 struct ppc_link_hash_entry **hash,
e054468f 10046 struct plt_entry **plt_ent,
6911b7dc
AM		 10047 bfd_vma destination,
10048 unsigned long local_off)
5bd4f169 10049{
721956f4
AM		 10050 struct ppc_link_hash_entry *h = *hash;
10051 bfd_vma location;
10052 bfd_vma branch_offset;
10053 bfd_vma max_branch_offset;
4ce794b7 10054 enum elf_ppc64_reloc_type r_type;
5bd4f169 10055
721956f4
AM		 10056 if (h != NULL)
10057 {
e054468f 10058 struct plt_entry *ent;
7fe2b9a6 10059 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10060 if (h->oh != NULL
10061 && h->oh->is_func_descriptor)
7b8f6675
AM		 10062 {
10063 fdh = ppc_follow_link (h->oh);
10064 *hash = fdh;
10065 }
8387904d 10066
e054468f
AM		 10067 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10068 if (ent->addend == rel->r_addend
10069 && ent->plt.offset != (bfd_vma) -1)
10070 {
e054468f
AM		 10071 *plt_ent = ent;
10072 return ppc_stub_plt_call;
10073 }
5bd4f169 10074
7fe2b9a6
AM		 10075 /* Here, we know we don't have a plt entry. If we don't have a
10076 either a defined function descriptor or a defined entry symbol
10077 in a regular object file, then it is pointless trying to make
10078 any other type of stub. */
854b41e7
AM		 10079 if (!is_static_defined (&fdh->elf)
10080 && !is_static_defined (&h->elf))
721956f4 10081 return ppc_stub_none;
5d1634d7 10082 }
e054468f
AM		 10083 else if (elf_local_got_ents (input_sec->owner) != NULL)
10084 {
10085 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10086 struct plt_entry **local_plt = (struct plt_entry **)
10087 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10088 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10089
10090 if (local_plt[r_symndx] != NULL)
10091 {
10092 struct plt_entry *ent;
10093
10094 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10095 if (ent->addend == rel->r_addend
10096 && ent->plt.offset != (bfd_vma) -1)
10097 {
10098 *plt_ent = ent;
10099 return ppc_stub_plt_call;
10100 }
10101 }
10102 }
5d1634d7 10103
721956f4
AM		 10104 /* Determine where the call point is. */
10105 location = (input_sec->output_offset
10106 + input_sec->output_section->vma
10107 + rel->r_offset);
5d1634d7 10108
721956f4
AM		 10109 branch_offset = destination - location;
10110 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10111
721956f4
AM		 10112 /* Determine if a long branch stub is needed. */
10113 max_branch_offset = 1 << 25;
4ce794b7 10114 if (r_type != R_PPC64_REL24)
721956f4 10115 max_branch_offset = 1 << 15;
5d1634d7 10116
6911b7dc 10117 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10118 /* We need a stub. Figure out whether a long_branch or plt_branch
10119 is needed later. */
10120 return ppc_stub_long_branch;
5d1634d7 10121
721956f4 10122 return ppc_stub_none;
5d1634d7
AM		 10123}
10124
794e51c0
AM		 10125/* With power7 weakly ordered memory model, it is possible for ld.so
10126 to update a plt entry in one thread and have another thread see a
10127 stale zero toc entry. To avoid this we need some sort of acquire
10128 barrier in the call stub. One solution is to make the load of the
10129 toc word seem to appear to depend on the load of the function entry
10130 word. Another solution is to test for r2 being zero, and branch to
10131 the appropriate glink entry if so.
10132
10133 . fake dep barrier compare
71a39c98
AM		 10134 . ld 12,xxx(2) ld 12,xxx(2)
10135 . mtctr 12 mtctr 12
10136 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10137 . add 2,2,11 cmpldi 2,0
10138 . ld 2,xxx+8(2) bnectr+
10139 . bctr b <glink_entry>
10140
10141 The solution involving the compare turns out to be faster, so
10142 that's what we use unless the branch won't reach. */
10143
10144#define ALWAYS_USE_FAKE_DEP 0
10145#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10146
5d1634d7
AM		 10147#define PPC_LO(v) ((v) & 0xffff)
10148#define PPC_HI(v) (((v) >> 16) & 0xffff)
10149#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10150
794e51c0
AM		 10151static inline unsigned int
10152plt_stub_size (struct ppc_link_hash_table *htab,
10153 struct ppc_stub_hash_entry *stub_entry,
10154 bfd_vma off)
10155{
b9e5796b
AM		 10156 unsigned size = 12;
10157
10158 if (ALWAYS_EMIT_R2SAVE
10159 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10160 size += 4;
10161 if (PPC_HA (off) != 0)
794e51c0 10162 size += 4;
b9e5796b
AM		 10163 if (htab->opd_abi)
10164 {
10165 size += 4;
e7d1c40c 10166 if (htab->params->plt_static_chain)
b9e5796b 10167 size += 4;
e7d1c40c 10168 if (htab->params->plt_thread_safe)
b9e5796b 10169 size += 8;
e7d1c40c 10170 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10171 size += 4;
10172 }
794e51c0
AM		 10173 if (stub_entry->h != NULL
10174 && (stub_entry->h == htab->tls_get_addr_fd
10175 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10176 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10177 size += 13 * 4;
10178 return size;
10179}
10180
10181/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10182 then return the padding needed to do so. */
10183static inline unsigned int
10184plt_stub_pad (struct ppc_link_hash_table *htab,
10185 struct ppc_stub_hash_entry *stub_entry,
10186 bfd_vma plt_off)
10187{
e7d1c40c 10188 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0
AM		 10189 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10190 bfd_vma stub_off = stub_entry->stub_sec->size;
10191
10192 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10193 > (stub_size & -stub_align))
10194 return stub_align - (stub_off & (stub_align - 1));
10195 return 0;
10196}
10197
10198/* Build a .plt call stub. */
10199
10200static inline bfd_byte *
10201build_plt_stub (struct ppc_link_hash_table *htab,
10202 struct ppc_stub_hash_entry *stub_entry,
10203 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10204{
e7d1c40c 10205 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10206 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c
AM		 10207 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10208 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
794e51c0
AM		 10209 bfd_boolean use_fake_dep = plt_thread_safe;
10210 bfd_vma cmp_branch_off = 0;
10211
10212 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10213 && plt_load_toc
794e51c0
AM		 10214 && plt_thread_safe
10215 && !(stub_entry->h != NULL
10216 && (stub_entry->h == htab->tls_get_addr_fd
10217 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10218 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10219 {
10220 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10221 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10222 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10223 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10224 bfd_vma to, from;
10225
68d62958
AM		 10226 if (pltindex > 32768)
10227 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10228 to = (glinkoff
10229 + htab->glink->output_offset
10230 + htab->glink->output_section->vma);
10231 from = (p - stub_entry->stub_sec->contents
10232 + 4 * (ALWAYS_EMIT_R2SAVE
10233 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10234 + 4 * (PPC_HA (offset) != 0)
10235 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10236 != PPC_HA (offset))
10237 + 4 * (plt_static_chain != 0)
10238 + 20
10239 + stub_entry->stub_sec->output_offset
10240 + stub_entry->stub_sec->output_section->vma);
10241 cmp_branch_off = to - from;
10242 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10243 }
10244
ac2df442
AM		 10245 if (PPC_HA (offset) != 0)
10246 {
176a0d42
AM		 10247 if (r != NULL)
10248 {
794e51c0
AM		 10249 if (ALWAYS_EMIT_R2SAVE
10250 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10251 r[0].r_offset += 4;
176a0d42 10252 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10253 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10254 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10255 r[1].r_addend = r[0].r_addend;
b9e5796b 10256 if (plt_load_toc)
176a0d42 10257 {
b9e5796b 10258 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10259 {
b9e5796b
AM		 10260 r[2].r_offset = r[1].r_offset + 4;
10261 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10262 r[2].r_addend = r[0].r_addend;
10263 }
10264 else
10265 {
10266 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10267 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10268 r[2].r_addend = r[0].r_addend + 8;
10269 if (plt_static_chain)
10270 {
10271 r[3].r_offset = r[2].r_offset + 4;
10272 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10273 r[3].r_addend = r[0].r_addend + 16;
10274 }
c7131b65 10275 }
176a0d42
AM		 10276 }
10277 }
794e51c0
AM		 10278 if (ALWAYS_EMIT_R2SAVE
10279 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10280 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10281 if (plt_load_toc)
10282 {
10283 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10284 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10285 }
10286 else
10287 {
10288 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10289 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10290 }
b9e5796b
AM		 10291 if (plt_load_toc
10292 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10293 {
71a39c98 10294 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10295 offset = 0;
10296 }
71a39c98 10297 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10298 if (plt_load_toc)
794e51c0 10299 {
b9e5796b
AM		 10300 if (use_fake_dep)
10301 {
10302 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10303 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10304 }
10305 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10306 if (plt_static_chain)
10307 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10308 }
ac2df442
AM		 10309 }
10310 else
10311 {
176a0d42
AM		 10312 if (r != NULL)
10313 {
794e51c0
AM		 10314 if (ALWAYS_EMIT_R2SAVE
10315 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10316 r[0].r_offset += 4;
176a0d42 10317 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10318 if (plt_load_toc)
176a0d42 10319 {
b9e5796b 10320 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10321 {
b9e5796b
AM		 10322 r[1].r_offset = r[0].r_offset + 4;
10323 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10324 r[1].r_addend = r[0].r_addend;
10325 }
10326 else
10327 {
10328 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10329 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10330 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10331 if (plt_static_chain)
10332 {
10333 r[2].r_offset = r[1].r_offset + 4;
10334 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10335 r[2].r_addend = r[0].r_addend + 8;
10336 }
c7131b65 10337 }
176a0d42
AM		 10338 }
10339 }
794e51c0
AM		 10340 if (ALWAYS_EMIT_R2SAVE
10341 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10342 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10343 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10344 if (plt_load_toc
10345 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10346 {
10347 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10348 offset = 0;
10349 }
71a39c98 10350 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10351 if (plt_load_toc)
794e51c0 10352 {
b9e5796b
AM		 10353 if (use_fake_dep)
10354 {
10355 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10356 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10357 }
10358 if (plt_static_chain)
10359 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10360 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10361 }
ac2df442 10362 }
b9e5796b 10363 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10364 {
10365 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10366 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10367 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10368 }
10369 else
10370 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10371 return p;
10372}
10373
a7f2871e
AM		 10374/* Build a special .plt call stub for __tls_get_addr. */
10375
10376#define LD_R11_0R3 0xe9630000
10377#define LD_R12_0R3 0xe9830000
10378#define MR_R0_R3 0x7c601b78
10379#define CMPDI_R11_0 0x2c2b0000
10380#define ADD_R3_R12_R13 0x7c6c6a14
10381#define BEQLR 0x4d820020
10382#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10383#define STD_R11_0R1 0xf9610000
10384#define BCTRL 0x4e800421
10385#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10386#define MTLR_R11 0x7d6803a6
10387
10388static inline bfd_byte *
794e51c0
AM		 10389build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10390 struct ppc_stub_hash_entry *stub_entry,
10391 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10392{
e7d1c40c 10393 bfd *obfd = htab->params->stub_bfd;
794e51c0 10394
a7f2871e
AM		 10395 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10396 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10397 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10398 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10399 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10400 bfd_put_32 (obfd, BEQLR, p), p += 4;
10401 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10402 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10403 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10404
10405 if (r != NULL)
10406 r[0].r_offset += 9 * 4;
794e51c0 10407 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10408 bfd_put_32 (obfd, BCTRL, p - 4);
10409
a078d95a
AM		 10410 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10411 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
a7f2871e
AM		 10412 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10413 bfd_put_32 (obfd, BLR, p), p += 4;
10414
10415 return p;
10416}
10417
176a0d42
AM		 10418static Elf_Internal_Rela *
10419get_relocs (asection *sec, int count)
10420{
10421 Elf_Internal_Rela *relocs;
10422 struct bfd_elf_section_data *elfsec_data;
10423
10424 elfsec_data = elf_section_data (sec);
10425 relocs = elfsec_data->relocs;
10426 if (relocs == NULL)
10427 {
10428 bfd_size_type relsize;
10429 relsize = sec->reloc_count * sizeof (*relocs);
10430 relocs = bfd_alloc (sec->owner, relsize);
10431 if (relocs == NULL)
10432 return NULL;
10433 elfsec_data->relocs = relocs;
d4730f92
BS		 10434 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10435 sizeof (Elf_Internal_Shdr));
10436 if (elfsec_data->rela.hdr == NULL)
10437 return NULL;
10438 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10439 * sizeof (Elf64_External_Rela));
10440 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10441 sec->reloc_count = 0;
10442 }
10443 relocs += sec->reloc_count;
10444 sec->reloc_count += count;
10445 return relocs;
10446}
10447
aa374f67 10448static bfd_vma
25f53a85 10449get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10450 struct ppc_stub_hash_entry *stub_entry)
10451{
25f53a85 10452 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM		 10453 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10454
10455 if (r2off == 0)
10456 {
10457 /* Support linking -R objects. Get the toc pointer from the
10458 opd entry. */
10459 char buf[8];
b9e5796b
AM		 10460 if (!htab->opd_abi)
10461 return r2off;
aa374f67
AM		 10462 asection *opd = stub_entry->h->elf.root.u.def.section;
10463 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10464
10465 if (strcmp (opd->name, ".opd") != 0
10466 || opd->reloc_count != 0)
10467 {
bc30df16 10468 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10469 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10470 bfd_set_error (bfd_error_bad_value);
10471 return 0;
10472 }
10473 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10474 return 0;
10475 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10476 r2off -= elf_gp (info->output_bfd);
aa374f67
AM		 10477 }
10478 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10479 return r2off;
10480}
10481
b34976b6 10482static bfd_boolean
4ce794b7 10483ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10484{
721956f4
AM		 10485 struct ppc_stub_hash_entry *stub_entry;
10486 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10487 struct bfd_link_info *info;
10488 struct ppc_link_hash_table *htab;
721956f4
AM		 10489 bfd_byte *loc;
10490 bfd_byte *p;
ee75fd95 10491 bfd_vma dest, off;
721956f4 10492 int size;
176a0d42 10493 Elf_Internal_Rela *r;
e054468f 10494 asection *plt;
5d1634d7 10495
721956f4
AM		 10496 /* Massage our args to the form they really have. */
10497 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10498 info = in_arg;
5d1634d7 10499
5d1634d7 10500 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10501 if (htab == NULL)
10502 return FALSE;
5d1634d7 10503
721956f4 10504 /* Make a note of the offset within the stubs for this entry. */
eea6121a 10505 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 10506 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 10507
4ce794b7 10508 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10509 switch (stub_entry->stub_type)
5d1634d7 10510 {
721956f4 10511 case ppc_stub_long_branch:
ad8e1ba5 10512 case ppc_stub_long_branch_r2off:
721956f4 10513 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10514 dest = (stub_entry->target_value
10515 + stub_entry->target_section->output_offset
10516 + stub_entry->target_section->output_section->vma);
10517 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10518 off = dest;
5d1634d7 10519
721956f4
AM		 10520 /* And this is where we are coming from. */
10521 off -= (stub_entry->stub_offset
97b639ba
AM		 10522 + stub_entry->stub_sec->output_offset
10523 + stub_entry->stub_sec->output_section->vma);
e86ce104 10524
ac2df442
AM		 10525 size = 4;
10526 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10527 {
25f53a85 10528 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10529
aa374f67
AM		 10530 if (r2off == 0)
10531 {
10532 htab->stub_error = TRUE;
10533 return FALSE;
10534 }
e7d1c40c 10535 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10536 loc += 4;
ac2df442
AM		 10537 size = 12;
10538 if (PPC_HA (r2off) != 0)
10539 {
10540 size = 16;
e7d1c40c
AM		 10541 bfd_put_32 (htab->params->stub_bfd,
10542 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10543 loc += 4;
10544 }
e7d1c40c 10545 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10546 loc += 4;
ac2df442 10547 off -= size - 4;
ad8e1ba5 10548 }
e7d1c40c 10549 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10550
5c3dead3
AM		 10551 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10552 {
bc30df16
AM		 10553 info->callbacks->einfo
10554 (_("%P: long branch stub `%s' offset overflow\n"),
10555 stub_entry->root.string);
5c3dead3
AM		 10556 htab->stub_error = TRUE;
10557 return FALSE;
10558 }
ee75fd95
AM		 10559
10560 if (info->emitrelocations)
10561 {
176a0d42
AM		 10562 r = get_relocs (stub_entry->stub_sec, 1);
10563 if (r == NULL)
10564 return FALSE;
ee75fd95
AM		 10565 r->r_offset = loc - stub_entry->stub_sec->contents;
10566 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10567 r->r_addend = dest;
10568 if (stub_entry->h != NULL)
10569 {
10570 struct elf_link_hash_entry **hashes;
10571 unsigned long symndx;
10572 struct ppc_link_hash_entry *h;
10573
e7d1c40c 10574 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10575 if (hashes == NULL)
10576 {
10577 bfd_size_type hsize;
10578
10579 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10580 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10581 if (hashes == NULL)
10582 return FALSE;
e7d1c40c 10583 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10584 htab->stub_globals = 1;
10585 }
10586 symndx = htab->stub_globals++;
10587 h = stub_entry->h;
10588 hashes[symndx] = &h->elf;
10589 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10590 if (h->oh != NULL && h->oh->is_func)
b31867b6 10591 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10592 if (h->elf.root.u.def.section != stub_entry->target_section)
10593 /* H is an opd symbol. The addend must be zero. */
10594 r->r_addend = 0;
10595 else
10596 {
10597 off = (h->elf.root.u.def.value
10598 + h->elf.root.u.def.section->output_offset
10599 + h->elf.root.u.def.section->output_section->vma);
10600 r->r_addend -= off;
10601 }
10602 }
10603 }
721956f4 10604 break;
e86ce104 10605
721956f4 10606 case ppc_stub_plt_branch:
ad8e1ba5 10607 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10608 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10609 stub_entry->root.string + 9,
b34976b6 10610 FALSE, FALSE);
721956f4
AM		 10611 if (br_entry == NULL)
10612 {
8de848d8 10613 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10614 stub_entry->root.string);
b34976b6
AM		 10615 htab->stub_error = TRUE;
10616 return FALSE;
721956f4
AM		 10617 }
10618
176a0d42
AM		 10619 dest = (stub_entry->target_value
10620 + stub_entry->target_section->output_offset
10621 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10622 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10623 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10624
176a0d42 10625 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10626 htab->brlt->contents + br_entry->offset);
721956f4 10627
f94498ff 10628 if (br_entry->iter == htab->stub_iteration)
721956f4 10629 {
f94498ff 10630 br_entry->iter = 0;
84f5d08e 10631
f94498ff 10632 if (htab->relbrlt != NULL)
84f5d08e 10633 {
f94498ff
AM		 10634 /* Create a reloc for the branch lookup table entry. */
10635 Elf_Internal_Rela rela;
10636 bfd_byte *rl;
10637
10638 rela.r_offset = (br_entry->offset
10639 + htab->brlt->output_offset
10640 + htab->brlt->output_section->vma);
10641 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10642 rela.r_addend = dest;
f94498ff
AM		 10643
10644 rl = htab->relbrlt->contents;
10645 rl += (htab->relbrlt->reloc_count++
10646 * sizeof (Elf64_External_Rela));
10647 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10648 }
10649 else if (info->emitrelocations)
10650 {
176a0d42
AM		 10651 r = get_relocs (htab->brlt, 1);
10652 if (r == NULL)
10653 return FALSE;
10654 /* brlt, being SEC_LINKER_CREATED does not go through the
10655 normal reloc processing. Symbols and offsets are not
10656 translated from input file to output file form, so
10657 set up the offset per the output file. */
f94498ff
AM		 10658 r->r_offset = (br_entry->offset
10659 + htab->brlt->output_offset
10660 + htab->brlt->output_section->vma);
10661 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10662 r->r_addend = dest;
84f5d08e 10663 }
84f5d08e 10664 }
721956f4 10665
176a0d42
AM		 10666 dest = (br_entry->offset
10667 + htab->brlt->output_offset
10668 + htab->brlt->output_section->vma);
10669
10670 off = (dest
4ce794b7 10671 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10672 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10673
ad8e1ba5 10674 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10675 {
25f53a85 10676 info->callbacks->einfo
bc30df16 10677 (_("%P: linkage table error against `%T'\n"),
721956f4 10678 stub_entry->root.string);
5d1634d7 10679 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10680 htab->stub_error = TRUE;
10681 return FALSE;
5d1634d7 10682 }
41bd81ab 10683
176a0d42
AM		 10684 if (info->emitrelocations)
10685 {
10686 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10687 if (r == NULL)
10688 return FALSE;
10689 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10690 if (bfd_big_endian (info->output_bfd))
10691 r[0].r_offset += 2;
00f412ee 10692 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10693 r[0].r_offset += 4;
10694 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10695 r[0].r_addend = dest;
10696 if (PPC_HA (off) != 0)
10697 {
10698 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10699 r[1].r_offset = r[0].r_offset + 4;
10700 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10701 r[1].r_addend = r[0].r_addend;
10702 }
10703 }
10704
00f412ee 10705 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10706 {
176a0d42 10707 if (PPC_HA (off) != 0)
ac2df442
AM		 10708 {
10709 size = 16;
e7d1c40c 10710 bfd_put_32 (htab->params->stub_bfd,
397998fc 10711 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10712 loc += 4;
e7d1c40c 10713 bfd_put_32 (htab->params->stub_bfd,
397998fc 10714 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10715 }
10716 else
10717 {
10718 size = 12;
e7d1c40c
AM		 10719 bfd_put_32 (htab->params->stub_bfd,
10720 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10721 }
ad8e1ba5
AM		 10722 }
10723 else
10724 {
25f53a85 10725 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10726
00f412ee 10727 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10728 {
10729 htab->stub_error = TRUE;
10730 return FALSE;
10731 }
ad8e1ba5 10732
e7d1c40c 10733 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10734 loc += 4;
00f412ee 10735 size = 16;
176a0d42 10736 if (PPC_HA (off) != 0)
ac2df442
AM		 10737 {
10738 size += 4;
e7d1c40c 10739 bfd_put_32 (htab->params->stub_bfd,
397998fc 10740 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10741 loc += 4;
e7d1c40c 10742 bfd_put_32 (htab->params->stub_bfd,
397998fc 10743 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10744 }
10745 else
e7d1c40c 10746 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10747
10748 if (PPC_HA (r2off) != 0)
10749 {
10750 size += 4;
00f412ee 10751 loc += 4;
e7d1c40c
AM		 10752 bfd_put_32 (htab->params->stub_bfd,
10753 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10754 }
10755 if (PPC_LO (r2off) != 0)
10756 {
10757 size += 4;
ac2df442 10758 loc += 4;
e7d1c40c
AM		 10759 bfd_put_32 (htab->params->stub_bfd,
10760 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10761 }
ad8e1ba5
AM		 10762 }
10763 loc += 4;
e7d1c40c 10764 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10765 loc += 4;
e7d1c40c 10766 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10767 break;
5d1634d7 10768
721956f4 10769 case ppc_stub_plt_call:
794e51c0 10770 case ppc_stub_plt_call_r2save:
e054468f 10771 if (stub_entry->h != NULL
b31867b6
AM		 10772 && stub_entry->h->is_func_descriptor
10773 && stub_entry->h->oh != NULL)
c862ae31 10774 {
b31867b6
AM		 10775 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10776
10777 /* If the old-ABI "dot-symbol" is undefined make it weak so
10778 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10779 FIXME: We used to define the symbol on one of the call
10780 stubs instead, which is why we test symbol section id
10781 against htab->top_id in various places. Likely all
10782 these checks could now disappear. */
10783 if (fh->elf.root.type == bfd_link_hash_undefined)
10784 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10785 /* Stop undo_symbol_twiddle changing it back to undefined. */
10786 fh->was_undefined = 0;
c862ae31
AM		 10787 }
10788
721956f4 10789 /* Now build the stub. */
e054468f 10790 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10791 if (dest >= (bfd_vma) -2)
721956f4
AM		 10792 abort ();
10793
33e44f2e 10794 plt = htab->elf.splt;
25f23106
AM		 10795 if (!htab->elf.dynamic_sections_created
10796 || stub_entry->h == NULL
10797 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10798 plt = htab->elf.iplt;
e054468f
AM		 10799
10800 dest += plt->output_offset + plt->output_section->vma;
10801
10802 if (stub_entry->h == NULL
10803 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10804 {
10805 Elf_Internal_Rela rela;
10806 bfd_byte *rl;
10807
10808 rela.r_offset = dest;
ee67d69a
AM		 10809 if (htab->opd_abi)
10810 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10811 else
10812 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10813 rela.r_addend = (stub_entry->target_value
10814 + stub_entry->target_section->output_offset
10815 + stub_entry->target_section->output_section->vma);
10816
33e44f2e
AM		 10817 rl = (htab->elf.irelplt->contents
10818 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10819 * sizeof (Elf64_External_Rela)));
10820 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10821 stub_entry->plt_ent->plt.offset |= 1;
10822 }
176a0d42
AM		 10823
10824 off = (dest
e054468f 10825 - elf_gp (plt->output_section->owner)
176a0d42 10826 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10827
ad8e1ba5 10828 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10829 {
25f53a85 10830 info->callbacks->einfo
bc30df16 10831 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10832 stub_entry->h != NULL
10833 ? stub_entry->h->elf.root.root.string
10834 : "<local sym>");
721956f4 10835 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10836 htab->stub_error = TRUE;
10837 return FALSE;
721956f4
AM		 10838 }
10839
e7d1c40c 10840 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10841 {
10842 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10843
10844 stub_entry->stub_sec->size += pad;
10845 stub_entry->stub_offset = stub_entry->stub_sec->size;
10846 loc += pad;
10847 }
10848
176a0d42
AM		 10849 r = NULL;
10850 if (info->emitrelocations)
10851 {
10852 r = get_relocs (stub_entry->stub_sec,
3ba720c7
AM		 10853 ((PPC_HA (off) != 0)
10854 + (htab->opd_abi
e7d1c40c 10855 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10856 && PPC_HA (off + 16) == PPC_HA (off))
10857 : 1)));
176a0d42
AM		 10858 if (r == NULL)
10859 return FALSE;
10860 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10861 if (bfd_big_endian (info->output_bfd))
10862 r[0].r_offset += 2;
176a0d42
AM		 10863 r[0].r_addend = dest;
10864 }
a7f2871e
AM		 10865 if (stub_entry->h != NULL
10866 && (stub_entry->h == htab->tls_get_addr_fd
10867 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10868 && !htab->params->no_tls_get_addr_opt)
794e51c0 10869 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10870 else
794e51c0 10871 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10872 size = p - loc;
10873 break;
10874
10875 default:
10876 BFD_FAIL ();
b34976b6 10877 return FALSE;
721956f4
AM		 10878 }
10879
eea6121a 10880 stub_entry->stub_sec->size += size;
97b639ba 10881
e7d1c40c 10882 if (htab->params->emit_stub_syms)
97b639ba
AM		 10883 {
10884 struct elf_link_hash_entry *h;
ee75fd95
AM		 10885 size_t len1, len2;
10886 char *name;
10887 const char *const stub_str[] = { "long_branch",
10888 "long_branch_r2off",
10889 "plt_branch",
10890 "plt_branch_r2off",
794e51c0 10891 "plt_call",
ee75fd95
AM		 10892 "plt_call" };
10893
10894 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10895 len2 = strlen (stub_entry->root.string);
10896 name = bfd_malloc (len1 + len2 + 2);
10897 if (name == NULL)
10898 return FALSE;
10899 memcpy (name, stub_entry->root.string, 9);
10900 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10901 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10902 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10903 if (h == NULL)
10904 return FALSE;
10905 if (h->root.type == bfd_link_hash_new)
10906 {
10907 h->root.type = bfd_link_hash_defined;
10908 h->root.u.def.section = stub_entry->stub_sec;
10909 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10910 h->ref_regular = 1;
10911 h->def_regular = 1;
10912 h->ref_regular_nonweak = 1;
10913 h->forced_local = 1;
10914 h->non_elf = 0;
97b639ba
AM		 10915 }
10916 }
10917
b34976b6 10918 return TRUE;
721956f4
AM		 10919}
10920
10921/* As above, but don't actually build the stub. Just bump offset so
10922 we know stub section sizes, and select plt_branch stubs where
10923 long_branch stubs won't do. */
10924
b34976b6 10925static bfd_boolean
4ce794b7 10926ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10927{
10928 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10929 struct bfd_link_info *info;
721956f4
AM		 10930 struct ppc_link_hash_table *htab;
10931 bfd_vma off;
10932 int size;
10933
10934 /* Massage our args to the form they really have. */
10935 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 10936 info = in_arg;
10937
10938 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10939 if (htab == NULL)
10940 return FALSE;
721956f4 10941
794e51c0
AM		 10942 if (stub_entry->stub_type == ppc_stub_plt_call
10943 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10944 {
e054468f
AM		 10945 asection *plt;
10946 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10947 if (off >= (bfd_vma) -2)
411e1bfb 10948 abort ();
33e44f2e 10949 plt = htab->elf.splt;
25f23106
AM		 10950 if (!htab->elf.dynamic_sections_created
10951 || stub_entry->h == NULL
10952 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10953 plt = htab->elf.iplt;
e054468f
AM		 10954 off += (plt->output_offset
10955 + plt->output_section->vma
10956 - elf_gp (plt->output_section->owner)
ad8e1ba5 10957 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10958
794e51c0 10959 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 10960 if (htab->params->plt_stub_align)
794e51c0 10961 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 10962 if (info->emitrelocations)
10963 {
10964 stub_entry->stub_sec->reloc_count
b9e5796b
AM		 10965 += ((PPC_HA (off) != 0)
10966 + (htab->opd_abi
e7d1c40c 10967 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 10968 && PPC_HA (off + 16) == PPC_HA (off))
10969 : 1));
176a0d42
AM		 10970 stub_entry->stub_sec->flags |= SEC_RELOC;
10971 }
721956f4
AM		 10972 }
10973 else
10974 {
ad8e1ba5
AM		 10975 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10976 variants. */
ac2df442 10977 bfd_vma r2off = 0;
6911b7dc 10978 bfd_vma local_off = 0;
ac2df442 10979
721956f4
AM		 10980 off = (stub_entry->target_value
10981 + stub_entry->target_section->output_offset
10982 + stub_entry->target_section->output_section->vma);
eea6121a 10983 off -= (stub_entry->stub_sec->size
721956f4
AM		 10984 + stub_entry->stub_sec->output_offset
10985 + stub_entry->stub_sec->output_section->vma);
10986
ad8e1ba5
AM		 10987 /* Reset the stub type from the plt variant in case we now
10988 can reach with a shorter stub. */
10989 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10990 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10991
10992 size = 4;
10993 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10994 {
25f53a85 10995 r2off = get_r2off (info, stub_entry);
b9e5796b 10996 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10997 {
10998 htab->stub_error = TRUE;
10999 return FALSE;
11000 }
ac2df442
AM		 11001 size = 12;
11002 if (PPC_HA (r2off) != 0)
11003 size = 16;
11004 off -= size - 4;
ad8e1ba5
AM		 11005 }
11006
6911b7dc
AM		 11007 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11008
b9e5796b
AM		 11009 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11010 Do the same for -R objects without function descriptors. */
11011 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11012 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11013 && r2off == 0))
721956f4
AM		 11014 {
11015 struct ppc_branch_hash_entry *br_entry;
11016
11017 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11018 stub_entry->root.string + 9,
b34976b6 11019 TRUE, FALSE);
721956f4
AM		 11020 if (br_entry == NULL)
11021 {
8de848d8 11022 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11023 stub_entry->root.string);
b34976b6
AM		 11024 htab->stub_error = TRUE;
11025 return FALSE;
721956f4
AM		 11026 }
11027
11028 if (br_entry->iter != htab->stub_iteration)
11029 {
11030 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11031 br_entry->offset = htab->brlt->size;
11032 htab->brlt->size += 8;
63bc6f6c 11033
ee75fd95 11034 if (htab->relbrlt != NULL)
eea6121a 11035 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11036 else if (info->emitrelocations)
11037 {
11038 htab->brlt->reloc_count += 1;
11039 htab->brlt->flags |= SEC_RELOC;
11040 }
721956f4 11041 }
ad8e1ba5
AM		 11042
11043 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11044 off = (br_entry->offset
11045 + htab->brlt->output_offset
11046 + htab->brlt->output_section->vma
11047 - elf_gp (htab->brlt->output_section->owner)
11048 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11049
176a0d42
AM		 11050 if (info->emitrelocations)
11051 {
11052 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11053 stub_entry->stub_sec->flags |= SEC_RELOC;
11054 }
11055
00f412ee 11056 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11057 {
11058 size = 12;
176a0d42 11059 if (PPC_HA (off) != 0)
ac2df442
AM		 11060 size = 16;
11061 }
11062 else
11063 {
00f412ee 11064 size = 16;
176a0d42 11065 if (PPC_HA (off) != 0)
ac2df442
AM		 11066 size += 4;
11067
11068 if (PPC_HA (r2off) != 0)
11069 size += 4;
00f412ee
AM		 11070 if (PPC_LO (r2off) != 0)
11071 size += 4;
ac2df442 11072 }
721956f4 11073 }
84f5d08e
AM		 11074 else if (info->emitrelocations)
11075 {
11076 stub_entry->stub_sec->reloc_count += 1;
11077 stub_entry->stub_sec->flags |= SEC_RELOC;
11078 }
721956f4
AM		 11079 }
11080
eea6121a 11081 stub_entry->stub_sec->size += size;
b34976b6 11082 return TRUE;
721956f4
AM		 11083}
11084
11085/* Set up various things so that we can make a list of input sections
11086 for each output section included in the link. Returns -1 on error,
cedb70c5 11087 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11088
11089int
e7d1c40c 11090ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4
AM		 11091{
11092 bfd *input_bfd;
734b6cf9 11093 int top_id, top_index, id;
721956f4 11094 asection *section;
734b6cf9 11095 asection **input_list;
721956f4
AM		 11096 bfd_size_type amt;
11097 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11098
4dfe6ac6
NC		 11099 if (htab == NULL)
11100 return -1;
4c52953f 11101
1e2f5b6e 11102 /* Find the top input section id. */
3d6f9012 11103 for (input_bfd = info->input_bfds, top_id = 3;
721956f4 11104 input_bfd != NULL;
c72f2fb2 11105 input_bfd = input_bfd->link.next)
721956f4 11106 {
721956f4
AM		 11107 for (section = input_bfd->sections;
11108 section != NULL;
11109 section = section->next)
11110 {
11111 if (top_id < section->id)
11112 top_id = section->id;
11113 }
11114 }
721956f4 11115
8f3bab57 11116 htab->top_id = top_id;
721956f4 11117 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 11118 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 11119 if (htab->stub_group == NULL)
11120 return -1;
11121
3d6f9012
AM		 11122 /* Set toc_off for com, und, abs and ind sections. */
11123 for (id = 0; id < 3; id++)
11124 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 11125
734b6cf9
AM		 11126 /* We can't use output_bfd->section_count here to find the top output
11127 section index as some sections may have been removed, and
8423293d 11128 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 11129 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM		 11130 section != NULL;
11131 section = section->next)
11132 {
11133 if (top_index < section->index)
11134 top_index = section->index;
11135 }
11136
11137 htab->top_index = top_index;
11138 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 11139 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 11140 htab->input_list = input_list;
11141 if (input_list == NULL)
11142 return -1;
11143
721956f4
AM		 11144 return 1;
11145}
11146
927be08e
AM		 11147/* Set up for first pass at multitoc partitioning. */
11148
11149void
11150ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11151{
11152 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11153
1c865ab2 11154 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11155 htab->toc_bfd = NULL;
11156 htab->toc_first_sec = NULL;
11157}
11158
e717da7e
AM		 11159/* The linker repeatedly calls this function for each TOC input section
11160 and linker generated GOT section. Group input bfds such that the toc
927be08e 11161 within a group is less than 64k in size. */
ad8e1ba5 11162
927be08e 11163bfd_boolean
4ce794b7 11164ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11165{
11166 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11167 bfd_vma addr, off, limit;
ad8e1ba5 11168
4dfe6ac6
NC		 11169 if (htab == NULL)
11170 return FALSE;
11171
927be08e 11172 if (!htab->second_toc_pass)
4c52953f 11173 {
927be08e 11174 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11175 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11176
11177 if (new_bfd)
bf102f86
AM		 11178 {
11179 htab->toc_bfd = isec->owner;
11180 htab->toc_first_sec = isec;
11181 }
927be08e 11182
bf102f86
AM		 11183 addr = isec->output_offset + isec->output_section->vma;
11184 off = addr - htab->toc_curr;
d77c8a4b
AM		 11185 limit = 0x80008000;
11186 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11187 limit = 0x10000;
11188 if (off + isec->size > limit)
bf102f86
AM		 11189 {
11190 addr = (htab->toc_first_sec->output_offset
11191 + htab->toc_first_sec->output_section->vma);
11192 htab->toc_curr = addr;
11193 }
99877b66 11194
927be08e
AM		 11195 /* toc_curr is the base address of this toc group. Set elf_gp
11196 for the input section to be the offset relative to the
11197 output toc base plus 0x8000. Making the input elf_gp an
11198 offset allows us to move the toc as a whole without
11199 recalculating input elf_gp. */
11200 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11201 off += TOC_BASE_OFF;
11202
11203 /* Die if someone uses a linker script that doesn't keep input
11204 file .toc and .got together. */
a4fd3de5
AM		 11205 if (new_bfd
11206 && elf_gp (isec->owner) != 0
927be08e
AM		 11207 && elf_gp (isec->owner) != off)
11208 return FALSE;
11209
11210 elf_gp (isec->owner) = off;
11211 return TRUE;
4c52953f 11212 }
927be08e
AM		 11213
11214 /* During the second pass toc_first_sec points to the start of
11215 a toc group, and toc_curr is used to track the old elf_gp.
11216 We use toc_bfd to ensure we only look at each bfd once. */
11217 if (htab->toc_bfd == isec->owner)
11218 return TRUE;
11219 htab->toc_bfd = isec->owner;
11220
11221 if (htab->toc_first_sec == NULL
11222 || htab->toc_curr != elf_gp (isec->owner))
11223 {
11224 htab->toc_curr = elf_gp (isec->owner);
11225 htab->toc_first_sec = isec;
11226 }
11227 addr = (htab->toc_first_sec->output_offset
11228 + htab->toc_first_sec->output_section->vma);
11229 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11230 elf_gp (isec->owner) = off;
11231
11232 return TRUE;
ad8e1ba5
AM		 11233}
11234
927be08e
AM		 11235/* Called via elf_link_hash_traverse to merge GOT entries for global
11236 symbol H. */
11237
11238static bfd_boolean
11239merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11240{
11241 if (h->root.type == bfd_link_hash_indirect)
11242 return TRUE;
11243
927be08e
AM		 11244 merge_got_entries (&h->got.glist);
11245
11246 return TRUE;
11247}
11248
11249/* Called via elf_link_hash_traverse to allocate GOT entries for global
11250 symbol H. */
11251
11252static bfd_boolean
11253reallocate_got (struct elf_link_hash_entry *h, void *inf)
11254{
11255 struct got_entry *gent;
11256
11257 if (h->root.type == bfd_link_hash_indirect)
11258 return TRUE;
11259
927be08e
AM		 11260 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11261 if (!gent->is_indirect)
11262 allocate_got (h, (struct bfd_link_info *) inf, gent);
11263 return TRUE;
11264}
11265
11266/* Called on the first multitoc pass after the last call to
11267 ppc64_elf_next_toc_section. This function removes duplicate GOT
11268 entries. */
11269
11270bfd_boolean
11271ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11272{
11273 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11274 struct bfd *ibfd, *ibfd2;
11275 bfd_boolean done_something;
11276
11277 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11278
7865406b
AM		 11279 if (!htab->do_multi_toc)
11280 return FALSE;
11281
d0fae19d 11282 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11283 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11284
11285 /* And tlsld_got. */
c72f2fb2 11286 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11287 {
11288 struct got_entry *ent, *ent2;
11289
11290 if (!is_ppc64_elf (ibfd))
11291 continue;
11292
11293 ent = ppc64_tlsld_got (ibfd);
11294 if (!ent->is_indirect
11295 && ent->got.offset != (bfd_vma) -1)
11296 {
c72f2fb2 11297 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11298 {
11299 if (!is_ppc64_elf (ibfd2))
11300 continue;
11301
11302 ent2 = ppc64_tlsld_got (ibfd2);
11303 if (!ent2->is_indirect
11304 && ent2->got.offset != (bfd_vma) -1
11305 && elf_gp (ibfd2) == elf_gp (ibfd))
11306 {
11307 ent2->is_indirect = TRUE;
11308 ent2->got.ent = ent;
11309 }
11310 }
11311 }
11312 }
11313
11314 /* Zap sizes of got sections. */
33e44f2e
AM		 11315 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11316 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11317 htab->got_reli_size = 0;
11318
c72f2fb2 11319 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11320 {
11321 asection *got, *relgot;
11322
11323 if (!is_ppc64_elf (ibfd))
11324 continue;
11325
11326 got = ppc64_elf_tdata (ibfd)->got;
11327 if (got != NULL)
11328 {
11329 got->rawsize = got->size;
11330 got->size = 0;
11331 relgot = ppc64_elf_tdata (ibfd)->relgot;
11332 relgot->rawsize = relgot->size;
11333 relgot->size = 0;
11334 }
11335 }
11336
11337 /* Now reallocate the got, local syms first. We don't need to
11338 allocate section contents again since we never increase size. */
c72f2fb2 11339 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11340 {
11341 struct got_entry **lgot_ents;
11342 struct got_entry **end_lgot_ents;
11343 struct plt_entry **local_plt;
11344 struct plt_entry **end_local_plt;
f961d9dd 11345 unsigned char *lgot_masks;
927be08e
AM		 11346 bfd_size_type locsymcount;
11347 Elf_Internal_Shdr *symtab_hdr;
19e08130 11348 asection *s;
927be08e
AM		 11349
11350 if (!is_ppc64_elf (ibfd))
11351 continue;
11352
11353 lgot_ents = elf_local_got_ents (ibfd);
11354 if (!lgot_ents)
11355 continue;
11356
11357 symtab_hdr = &elf_symtab_hdr (ibfd);
11358 locsymcount = symtab_hdr->sh_info;
11359 end_lgot_ents = lgot_ents + locsymcount;
11360 local_plt = (struct plt_entry **) end_lgot_ents;
11361 end_local_plt = local_plt + locsymcount;
f961d9dd 11362 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11363 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11364 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11365 {
11366 struct got_entry *ent;
11367
11368 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11369 {
19e08130
AM		 11370 unsigned int ent_size = 8;
11371 unsigned int rel_size = sizeof (Elf64_External_Rela);
11372
d0fae19d
AM		 11373 ent->got.offset = s->size;
11374 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11375 {
19e08130
AM		 11376 ent_size *= 2;
11377 rel_size *= 2;
11378 }
11379 s->size += ent_size;
11380 if ((*lgot_masks & PLT_IFUNC) != 0)
11381 {
33e44f2e 11382 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11383 htab->got_reli_size += rel_size;
11384 }
11385 else if (info->shared)
11386 {
11387 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11388 srel->size += rel_size;
d0fae19d
AM		 11389 }
11390 }
927be08e
AM		 11391 }
11392 }
11393
11394 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11395
c72f2fb2 11396 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11397 {
11398 struct got_entry *ent;
11399
11400 if (!is_ppc64_elf (ibfd))
11401 continue;
11402
11403 ent = ppc64_tlsld_got (ibfd);
11404 if (!ent->is_indirect
11405 && ent->got.offset != (bfd_vma) -1)
11406 {
11407 asection *s = ppc64_elf_tdata (ibfd)->got;
11408 ent->got.offset = s->size;
11409 s->size += 16;
11410 if (info->shared)
11411 {
11412 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11413 srel->size += sizeof (Elf64_External_Rela);
11414 }
11415 }
11416 }
11417
33e44f2e 11418 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11419 if (!done_something)
c72f2fb2 11420 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11421 {
11422 asection *got;
11423
11424 if (!is_ppc64_elf (ibfd))
11425 continue;
11426
11427 got = ppc64_elf_tdata (ibfd)->got;
11428 if (got != NULL)
11429 {
11430 done_something = got->rawsize != got->size;
11431 if (done_something)
11432 break;
11433 }
11434 }
11435
11436 if (done_something)
e7d1c40c 11437 (*htab->params->layout_sections_again) ();
927be08e
AM		 11438
11439 /* Set up for second pass over toc sections to recalculate elf_gp
11440 on input sections. */
11441 htab->toc_bfd = NULL;
11442 htab->toc_first_sec = NULL;
11443 htab->second_toc_pass = TRUE;
11444 return done_something;
11445}
11446
11447/* Called after second pass of multitoc partitioning. */
11448
11449void
11450ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11451{
11452 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11453
11454 /* After the second pass, toc_curr tracks the TOC offset used
11455 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11456 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11457}
11458
9b5ecbd0
AM		 11459/* No toc references were found in ISEC. If the code in ISEC makes no
11460 calls, then there's no need to use toc adjusting stubs when branching
11461 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11462 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11463 needed, and 2 if a cyclical call-graph was found but no other reason
11464 for a stub was detected. If called from the top level, a return of
11465 2 means the same as a return of 0. */
9b5ecbd0
AM		 11466
11467static int
4ce794b7 11468toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11469{
9b5ecbd0 11470 int ret;
70cc837d
AM		 11471
11472 /* Mark this section as checked. */
11473 isec->call_check_done = 1;
9b5ecbd0 11474
772119ce
AM		 11475 /* We know none of our code bearing sections will need toc stubs. */
11476 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11477 return 0;
11478
eea6121a 11479 if (isec->size == 0)
082c50f8
AM		 11480 return 0;
11481
4c52953f
AM		 11482 if (isec->output_section == NULL)
11483 return 0;
11484
4c52953f 11485 ret = 0;
70cc837d 11486 if (isec->reloc_count != 0)
9b5ecbd0 11487 {
70cc837d
AM		 11488 Elf_Internal_Rela *relstart, *rel;
11489 Elf_Internal_Sym *local_syms;
11490 struct ppc_link_hash_table *htab;
2917689a 11491
70cc837d
AM		 11492 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11493 info->keep_memory);
11494 if (relstart == NULL)
11495 return -1;
90aecf7a 11496
70cc837d
AM		 11497 /* Look for branches to outside of this section. */
11498 local_syms = NULL;
11499 htab = ppc_hash_table (info);
11500 if (htab == NULL)
11501 return -1;
4c52953f 11502
70cc837d 11503 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11504 {
70cc837d
AM		 11505 enum elf_ppc64_reloc_type r_type;
11506 unsigned long r_symndx;
11507 struct elf_link_hash_entry *h;
11508 struct ppc_link_hash_entry *eh;
11509 Elf_Internal_Sym *sym;
11510 asection *sym_sec;
11511 struct _opd_sec_data *opd;
11512 bfd_vma sym_value;
11513 bfd_vma dest;
11514
11515 r_type = ELF64_R_TYPE (rel->r_info);
11516 if (r_type != R_PPC64_REL24
11517 && r_type != R_PPC64_REL14
11518 && r_type != R_PPC64_REL14_BRTAKEN
11519 && r_type != R_PPC64_REL14_BRNTAKEN)
11520 continue;
4c52953f 11521
70cc837d
AM		 11522 r_symndx = ELF64_R_SYM (rel->r_info);
11523 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11524 isec->owner))
4c52953f 11525 {
70cc837d
AM		 11526 ret = -1;
11527 break;
11528 }
4c52953f 11529
70cc837d
AM		 11530 /* Calls to dynamic lib functions go through a plt call stub
11531 that uses r2. */
11532 eh = (struct ppc_link_hash_entry *) h;
11533 if (eh != NULL
11534 && (eh->elf.plt.plist != NULL
11535 || (eh->oh != NULL
11536 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11537 {
11538 ret = 1;
11539 break;
4c52953f
AM		 11540 }
11541
70cc837d
AM		 11542 if (sym_sec == NULL)
11543 /* Ignore other undefined symbols. */
4c52953f 11544 continue;
4c52953f 11545
70cc837d
AM		 11546 /* Assume branches to other sections not included in the
11547 link need stubs too, to cover -R and absolute syms. */
11548 if (sym_sec->output_section == NULL)
11549 {
11550 ret = 1;
11551 break;
11552 }
4c52953f 11553
70cc837d
AM		 11554 if (h == NULL)
11555 sym_value = sym->st_value;
11556 else
11557 {
11558 if (h->root.type != bfd_link_hash_defined
11559 && h->root.type != bfd_link_hash_defweak)
11560 abort ();
11561 sym_value = h->root.u.def.value;
11562 }
11563 sym_value += rel->r_addend;
4c52953f 11564
70cc837d
AM		 11565 /* If this branch reloc uses an opd sym, find the code section. */
11566 opd = get_opd_info (sym_sec);
11567 if (opd != NULL)
11568 {
11569 if (h == NULL && opd->adjust != NULL)
11570 {
11571 long adjust;
4c52953f 11572
70cc837d
AM		 11573 adjust = opd->adjust[sym->st_value / 8];
11574 if (adjust == -1)
11575 /* Assume deleted functions won't ever be called. */
11576 continue;
11577 sym_value += adjust;
11578 }
4c52953f 11579
aef36ac1
AM		 11580 dest = opd_entry_value (sym_sec, sym_value,
11581 &sym_sec, NULL, FALSE);
70cc837d
AM		 11582 if (dest == (bfd_vma) -1)
11583 continue;
11584 }
11585 else
11586 dest = (sym_value
11587 + sym_sec->output_offset
11588 + sym_sec->output_section->vma);
4c52953f 11589
70cc837d
AM		 11590 /* Ignore branch to self. */
11591 if (sym_sec == isec)
11592 continue;
4c52953f 11593
70cc837d
AM		 11594 /* If the called function uses the toc, we need a stub. */
11595 if (sym_sec->has_toc_reloc
11596 || sym_sec->makes_toc_func_call)
4c52953f 11597 {
70cc837d 11598 ret = 1;
4c52953f
AM		 11599 break;
11600 }
70cc837d
AM		 11601
11602 /* Assume any branch that needs a long branch stub might in fact
11603 need a plt_branch stub. A plt_branch stub uses r2. */
11604 else if (dest - (isec->output_offset
11605 + isec->output_section->vma
6911b7dc
AM		 11606 + rel->r_offset) + (1 << 25)
11607 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11608 ? h->other
11609 : sym->st_other))
4c52953f 11610 {
70cc837d
AM		 11611 ret = 1;
11612 break;
11613 }
11614
11615 /* If calling back to a section in the process of being
11616 tested, we can't say for sure that no toc adjusting stubs
11617 are needed, so don't return zero. */
11618 else if (sym_sec->call_check_in_progress)
11619 ret = 2;
11620
11621 /* Branches to another section that itself doesn't have any TOC
11622 references are OK. Recursively call ourselves to check. */
11623 else if (!sym_sec->call_check_done)
11624 {
11625 int recur;
11626
11627 /* Mark current section as indeterminate, so that other
11628 sections that call back to current won't be marked as
11629 known. */
11630 isec->call_check_in_progress = 1;
11631 recur = toc_adjusting_stub_needed (info, sym_sec);
11632 isec->call_check_in_progress = 0;
11633
4c52953f
AM		 11634 if (recur != 0)
11635 {
70cc837d
AM		 11636 ret = recur;
11637 if (recur != 2)
11638 break;
4c52953f
AM		 11639 }
11640 }
4c52953f 11641 }
70cc837d
AM		 11642
11643 if (local_syms != NULL
11644 && (elf_symtab_hdr (isec->owner).contents
11645 != (unsigned char *) local_syms))
11646 free (local_syms);
11647 if (elf_section_data (isec)->relocs != relstart)
11648 free (relstart);
9b5ecbd0
AM		 11649 }
11650
70cc837d
AM		 11651 if ((ret & 1) == 0
11652 && isec->map_head.s != NULL
11653 && (strcmp (isec->output_section->name, ".init") == 0
11654 || strcmp (isec->output_section->name, ".fini") == 0))
11655 {
11656 if (isec->map_head.s->has_toc_reloc
11657 || isec->map_head.s->makes_toc_func_call)
11658 ret = 1;
11659 else if (!isec->map_head.s->call_check_done)
11660 {
11661 int recur;
11662 isec->call_check_in_progress = 1;
11663 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11664 isec->call_check_in_progress = 0;
11665 if (recur != 0)
11666 ret = recur;
11667 }
11668 }
11669
11670 if (ret == 1)
11671 isec->makes_toc_func_call = 1;
4c52953f 11672
9b5ecbd0
AM		 11673 return ret;
11674}
11675
721956f4
AM		 11676/* The linker repeatedly calls this function for each input section,
11677 in the order that input sections are linked into output sections.
11678 Build lists of input sections to determine groupings between which
11679 we may insert linker stubs. */
11680
9b5ecbd0 11681bfd_boolean
4ce794b7 11682ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11683{
11684 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11685
4dfe6ac6
NC		 11686 if (htab == NULL)
11687 return FALSE;
11688
734b6cf9
AM		 11689 if ((isec->output_section->flags & SEC_CODE) != 0
11690 && isec->output_section->index <= htab->top_index)
721956f4 11691 {
734b6cf9 11692 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11693 /* Steal the link_sec pointer for our list. */
721956f4 11694#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 11695 /* This happens to make the list in reverse order,
11696 which is what we want. */
734b6cf9
AM		 11697 PREV_SEC (isec) = *list;
11698 *list = isec;
721956f4 11699 }
ad8e1ba5 11700
4c52953f 11701 if (htab->multi_toc_needed)
9b5ecbd0 11702 {
8b974ba3
AM		 11703 /* Analyse sections that aren't already flagged as needing a
11704 valid toc pointer. Exclude .fixup for the linux kernel.
11705 .fixup contains branches, but only back to the function that
11706 hit an exception. */
11707 if (!(isec->has_toc_reloc
11708 || (isec->flags & SEC_CODE) == 0
11709 || strcmp (isec->name, ".fixup") == 0
11710 || isec->call_check_done))
11711 {
11712 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11713 return FALSE;
8b974ba3
AM		 11714 }
11715 /* Make all sections use the TOC assigned for this object file.
11716 This will be wrong for pasted sections; We fix that in
11717 check_pasted_section(). */
11718 if (elf_gp (isec->owner) != 0)
11719 htab->toc_curr = elf_gp (isec->owner);
11720 }
11721
ad8e1ba5 11722 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11723 return TRUE;
721956f4
AM		 11724}
11725
70cc837d
AM		 11726/* Check that all .init and .fini sections use the same toc, if they
11727 have toc relocs. */
11728
11729static bfd_boolean
11730check_pasted_section (struct bfd_link_info *info, const char *name)
11731{
11732 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11733
11734 if (o != NULL)
11735 {
11736 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11737 bfd_vma toc_off = 0;
11738 asection *i;
11739
11740 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11741 if (i->has_toc_reloc)
11742 {
11743 if (toc_off == 0)
11744 toc_off = htab->stub_group[i->id].toc_off;
11745 else if (toc_off != htab->stub_group[i->id].toc_off)
11746 return FALSE;
11747 }
6683a28d
AM		 11748
11749 if (toc_off == 0)
11750 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11751 if (i->makes_toc_func_call)
11752 {
11753 toc_off = htab->stub_group[i->id].toc_off;
11754 break;
11755 }
11756
70cc837d
AM		 11757 /* Make sure the whole pasted function uses the same toc offset. */
11758 if (toc_off != 0)
11759 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11760 htab->stub_group[i->id].toc_off = toc_off;
11761 }
11762 return TRUE;
11763}
11764
11765bfd_boolean
11766ppc64_elf_check_init_fini (struct bfd_link_info *info)
11767{
11768 return (check_pasted_section (info, ".init")
11769 & check_pasted_section (info, ".fini"));
11770}
11771
721956f4
AM		 11772/* See whether we can group stub sections together. Grouping stub
11773 sections may result in fewer stubs. More importantly, we need to
11774 put all .init* and .fini* stubs at the beginning of the .init or
11775 .fini output sections respectively, because glibc splits the
11776 _init and _fini functions into multiple parts. Putting a stub in
11777 the middle of a function is not a good idea. */
11778
11779static void
4ce794b7
AM		 11780group_sections (struct ppc_link_hash_table *htab,
11781 bfd_size_type stub_group_size,
11782 bfd_boolean stubs_always_before_branch)
721956f4 11783{
7c8fe5c4
AM		 11784 asection **list;
11785 bfd_size_type stub14_group_size;
11786 bfd_boolean suppress_size_errors;
11787
11788 suppress_size_errors = FALSE;
11789 stub14_group_size = stub_group_size;
11790 if (stub_group_size == 1)
11791 {
11792 /* Default values. */
11793 if (stubs_always_before_branch)
11794 {
11795 stub_group_size = 0x1e00000;
11796 stub14_group_size = 0x7800;
11797 }
11798 else
11799 {
11800 stub_group_size = 0x1c00000;
11801 stub14_group_size = 0x7000;
11802 }
11803 suppress_size_errors = TRUE;
11804 }
11805
11806 list = htab->input_list + htab->top_index;
734b6cf9 11807 do
721956f4 11808 {
734b6cf9
AM		 11809 asection *tail = *list;
11810 while (tail != NULL)
721956f4 11811 {
734b6cf9
AM		 11812 asection *curr;
11813 asection *prev;
11814 bfd_size_type total;
11815 bfd_boolean big_sec;
11816 bfd_vma curr_toc;
11817
11818 curr = tail;
eea6121a 11819 total = tail->size;
6bee8834
AM		 11820 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11821 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11822 ? stub14_group_size : stub_group_size);
11823 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11824 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11825 tail->owner, tail);
734b6cf9
AM		 11826 curr_toc = htab->stub_group[tail->id].toc_off;
11827
11828 while ((prev = PREV_SEC (curr)) != NULL
11829 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11830 < (ppc64_elf_section_data (prev) != NULL
11831 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11832 ? stub14_group_size : stub_group_size))
ad8e1ba5 11833 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11834 curr = prev;
11835
11836 /* OK, the size from the start of CURR to the end is less
11837 than stub_group_size and thus can be handled by one stub
11838 section. (or the tail section is itself larger than
11839 stub_group_size, in which case we may be toast.) We
11840 should really be keeping track of the total size of stubs
11841 added here, as stubs contribute to the final output
11842 section size. That's a little tricky, and this way will
11843 only break if stubs added make the total size more than
11844 2^25, ie. for the default stub_group_size, if stubs total
11845 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11846 do
721956f4
AM		 11847 {
11848 prev = PREV_SEC (tail);
734b6cf9 11849 /* Set up this stub group. */
721956f4
AM		 11850 htab->stub_group[tail->id].link_sec = curr;
11851 }
734b6cf9
AM		 11852 while (tail != curr && (tail = prev) != NULL);
11853
11854 /* But wait, there's more! Input sections up to stub_group_size
11855 bytes before the stub section can be handled by it too.
11856 Don't do this if we have a really large section after the
11857 stubs, as adding more stubs increases the chance that
11858 branches may not reach into the stub section. */
11859 if (!stubs_always_before_branch && !big_sec)
11860 {
11861 total = 0;
11862 while (prev != NULL
11863 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11864 < (ppc64_elf_section_data (prev) != NULL
11865 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11866 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 11867 && htab->stub_group[prev->id].toc_off == curr_toc)
11868 {
11869 tail = prev;
11870 prev = PREV_SEC (tail);
11871 htab->stub_group[tail->id].link_sec = curr;
11872 }
11873 }
11874 tail = prev;
721956f4
AM		 11875 }
11876 }
734b6cf9
AM		 11877 while (list-- != htab->input_list);
11878 free (htab->input_list);
721956f4
AM		 11879#undef PREV_SEC
11880}
11881
58d180e8
AM		 11882static const unsigned char glink_eh_frame_cie[] =
11883{
11884 0, 0, 0, 16, /* length. */
11885 0, 0, 0, 0, /* id. */
11886 1, /* CIE version. */
11887 'z', 'R', 0, /* Augmentation string. */
11888 4, /* Code alignment. */
11889 0x78, /* Data alignment. */
11890 65, /* RA reg. */
11891 1, /* Augmentation size. */
11892 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
da44f4e5
AM		 11893 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11894 0, 0, 0, 0
58d180e8
AM		 11895};
11896
d969d15f
AM		 11897/* Stripping output sections is normally done before dynamic section
11898 symbols have been allocated. This function is called later, and
11899 handles cases like htab->brlt which is mapped to its own output
11900 section. */
11901
11902static void
11903maybe_strip_output (struct bfd_link_info *info, asection *isec)
11904{
11905 if (isec->size == 0
11906 && isec->output_section->size == 0
53d8967a 11907 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11908 && !bfd_section_removed_from_list (info->output_bfd,
11909 isec->output_section)
11910 && elf_section_data (isec->output_section)->dynindx == 0)
11911 {
11912 isec->output_section->flags |= SEC_EXCLUDE;
11913 bfd_section_list_remove (info->output_bfd, isec->output_section);
11914 info->output_bfd->section_count--;
11915 }
11916}
11917
721956f4
AM		 11918/* Determine and set the size of the stub section for a final link.
11919
11920 The basic idea here is to examine all the relocations looking for
11921 PC-relative calls to a target that is unreachable with a "bl"
11922 instruction. */
11923
b34976b6 11924bfd_boolean
e7d1c40c 11925ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11926{
11927 bfd_size_type stub_group_size;
b34976b6 11928 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11929 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11930
4dfe6ac6
NC		 11931 if (htab == NULL)
11932 return FALSE;
11933
e7d1c40c
AM		 11934 if (htab->params->plt_thread_safe == -1 && !info->executable)
11935 htab->params->plt_thread_safe = 1;
b9e5796b 11936 if (!htab->opd_abi)
e7d1c40c
AM		 11937 htab->params->plt_thread_safe = 0;
11938 else if (htab->params->plt_thread_safe == -1)
794e51c0 11939 {
e2458743 11940 static const char *const thread_starter[] =
794e51c0
AM		 11941 {
11942 "pthread_create",
11943 /* libstdc++ */
11944 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11945 /* librt */
11946 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11947 "mq_notify", "create_timer",
11948 /* libanl */
11949 "getaddrinfo_a",
11950 /* libgomp */
11951 "GOMP_parallel_start",
11952 "GOMP_parallel_loop_static_start",
11953 "GOMP_parallel_loop_dynamic_start",
11954 "GOMP_parallel_loop_guided_start",
11955 "GOMP_parallel_loop_runtime_start",
68ffbac6 11956 "GOMP_parallel_sections_start",
794e51c0
AM		 11957 };
11958 unsigned i;
11959
11960 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11961 {
11962 struct elf_link_hash_entry *h;
11963 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11964 FALSE, FALSE, TRUE);
e7d1c40c
AM		 11965 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11966 if (htab->params->plt_thread_safe)
794e51c0
AM		 11967 break;
11968 }
11969 }
e7d1c40c
AM		 11970 stubs_always_before_branch = htab->params->group_size < 0;
11971 if (htab->params->group_size < 0)
11972 stub_group_size = -htab->params->group_size;
721956f4 11973 else
e7d1c40c 11974 stub_group_size = htab->params->group_size;
721956f4
AM		 11975
11976 group_sections (htab, stub_group_size, stubs_always_before_branch);
11977
721956f4
AM		 11978 while (1)
11979 {
11980 bfd *input_bfd;
11981 unsigned int bfd_indx;
11982 asection *stub_sec;
721956f4
AM		 11983
11984 htab->stub_iteration += 1;
721956f4
AM		 11985
11986 for (input_bfd = info->input_bfds, bfd_indx = 0;
11987 input_bfd != NULL;
c72f2fb2 11988 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 11989 {
11990 Elf_Internal_Shdr *symtab_hdr;
11991 asection *section;
6cdc0ccc 11992 Elf_Internal_Sym *local_syms = NULL;
721956f4 11993
0c8d6e5c 11994 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 11995 continue;
11996
721956f4 11997 /* We'll need the symbol table in a second. */
0ffa91dd 11998 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 11999 if (symtab_hdr->sh_info == 0)
12000 continue;
12001
721956f4
AM		 12002 /* Walk over each section attached to the input bfd. */
12003 for (section = input_bfd->sections;
12004 section != NULL;
12005 section = section->next)
12006 {
721956f4 12007 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12008
12009 /* If there aren't any relocs, then there's nothing more
12010 to do. */
12011 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12012 || (section->flags & SEC_ALLOC) == 0
12013 || (section->flags & SEC_LOAD) == 0
12014 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12015 || section->reloc_count == 0)
12016 continue;
12017
12018 /* If this section is a link-once section that will be
12019 discarded, then don't create any stubs. */
12020 if (section->output_section == NULL
927be08e 12021 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12022 continue;
12023
1e2f5b6e
AM		 12024 /* Get the relocs. */
12025 internal_relocs
4ce794b7 12026 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12027 info->keep_memory);
721956f4 12028 if (internal_relocs == NULL)
1e2f5b6e 12029 goto error_ret_free_local;
721956f4
AM		 12030
12031 /* Now examine each relocation. */
12032 irela = internal_relocs;
12033 irelaend = irela + section->reloc_count;
12034 for (; irela < irelaend; irela++)
12035 {
4ce794b7
AM		 12036 enum elf_ppc64_reloc_type r_type;
12037 unsigned int r_indx;
721956f4
AM		 12038 enum ppc_stub_type stub_type;
12039 struct ppc_stub_hash_entry *stub_entry;
8387904d 12040 asection *sym_sec, *code_sec;
e054468f 12041 bfd_vma sym_value, code_value;
721956f4 12042 bfd_vma destination;
6911b7dc 12043 unsigned long local_off;
8843416a 12044 bfd_boolean ok_dest;
721956f4 12045 struct ppc_link_hash_entry *hash;
8387904d 12046 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12047 struct elf_link_hash_entry *h;
12048 Elf_Internal_Sym *sym;
721956f4
AM		 12049 char *stub_name;
12050 const asection *id_sec;
74f0fb50 12051 struct _opd_sec_data *opd;
e054468f 12052 struct plt_entry *plt_ent;
721956f4
AM		 12053
12054 r_type = ELF64_R_TYPE (irela->r_info);
12055 r_indx = ELF64_R_SYM (irela->r_info);
12056
4ce794b7 12057 if (r_type >= R_PPC64_max)
721956f4
AM		 12058 {
12059 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12060 goto error_ret_free_internal;
721956f4
AM		 12061 }
12062
12063 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12064 if (r_type != R_PPC64_REL24
12065 && r_type != R_PPC64_REL14
12066 && r_type != R_PPC64_REL14_BRTAKEN
12067 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12068 continue;
12069
12070 /* Now determine the call target, its name, value,
12071 section. */
411e1bfb
AM		 12072 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12073 r_indx, input_bfd))
12074 goto error_ret_free_internal;
12075 hash = (struct ppc_link_hash_entry *) h;
12076
8843416a 12077 ok_dest = FALSE;
8387904d 12078 fdh = NULL;
7fe2b9a6 12079 sym_value = 0;
411e1bfb 12080 if (hash == NULL)
721956f4 12081 {
411e1bfb 12082 sym_value = sym->st_value;
8843416a 12083 ok_dest = TRUE;
721956f4 12084 }
7fe2b9a6
AM		 12085 else if (hash->elf.root.type == bfd_link_hash_defined
12086 || hash->elf.root.type == bfd_link_hash_defweak)
12087 {
12088 sym_value = hash->elf.root.u.def.value;
12089 if (sym_sec->output_section != NULL)
12090 ok_dest = TRUE;
12091 }
12092 else if (hash->elf.root.type == bfd_link_hash_undefweak
12093 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12094 {
99877b66 12095 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12096 use the func descriptor sym instead if it is
12097 defined. */
ceb1f1ef 12098 if (hash->elf.root.root.string[0] == '.'
b31867b6 12099 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12100 {
8387904d
AM		 12101 if (fdh->elf.root.type == bfd_link_hash_defined
12102 || fdh->elf.root.type == bfd_link_hash_defweak)
12103 {
12104 sym_sec = fdh->elf.root.u.def.section;
12105 sym_value = fdh->elf.root.u.def.value;
12106 if (sym_sec->output_section != NULL)
12107 ok_dest = TRUE;
12108 }
99877b66
AM		 12109 else
12110 fdh = NULL;
8387904d 12111 }
7fe2b9a6
AM		 12112 }
12113 else
12114 {
12115 bfd_set_error (bfd_error_bad_value);
12116 goto error_ret_free_internal;
721956f4
AM		 12117 }
12118
8843416a 12119 destination = 0;
6911b7dc 12120 local_off = 0;
8843416a
AM		 12121 if (ok_dest)
12122 {
12123 sym_value += irela->r_addend;
12124 destination = (sym_value
12125 + sym_sec->output_offset
12126 + sym_sec->output_section->vma);
6911b7dc
AM		 12127 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12128 ? hash->elf.other
12129 : sym->st_other);
8843416a
AM		 12130 }
12131
8387904d 12132 code_sec = sym_sec;
e054468f 12133 code_value = sym_value;
74f0fb50
AM		 12134 opd = get_opd_info (sym_sec);
12135 if (opd != NULL)
8387904d
AM		 12136 {
12137 bfd_vma dest;
12138
74f0fb50 12139 if (hash == NULL && opd->adjust != NULL)
8387904d 12140 {
74f0fb50 12141 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 12142 if (adjust == -1)
12143 continue;
e054468f 12144 code_value += adjust;
8387904d
AM		 12145 sym_value += adjust;
12146 }
12147 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12148 &code_sec, &code_value, FALSE);
8387904d
AM		 12149 if (dest != (bfd_vma) -1)
12150 {
12151 destination = dest;
12152 if (fdh != NULL)
12153 {
12154 /* Fixup old ABI sym to point at code
12155 entry. */
99877b66 12156 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12157 hash->elf.root.u.def.section = code_sec;
e054468f 12158 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12159 }
12160 }
12161 }
12162
721956f4 12163 /* Determine what (if any) linker stub is needed. */
e054468f 12164 plt_ent = NULL;
721956f4 12165 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12166 &plt_ent, destination,
12167 local_off);
ad8e1ba5
AM		 12168
12169 if (stub_type != ppc_stub_plt_call)
12170 {
12171 /* Check whether we need a TOC adjusting stub.
12172 Since the linker pastes together pieces from
12173 different object files when creating the
12174 _init and _fini functions, it may be that a
12175 call to what looks like a local sym is in
12176 fact a call needing a TOC adjustment. */
8387904d
AM		 12177 if (code_sec != NULL
12178 && code_sec->output_section != NULL
12179 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 12180 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 12181 && (code_sec->has_toc_reloc
12182 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12183 stub_type = ppc_stub_long_branch_r2off;
12184 }
12185
721956f4
AM		 12186 if (stub_type == ppc_stub_none)
12187 continue;
12188
411e1bfb
AM		 12189 /* __tls_get_addr calls might be eliminated. */
12190 if (stub_type != ppc_stub_plt_call
12191 && hash != NULL
8387904d
AM		 12192 && (hash == htab->tls_get_addr
12193 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12194 && section->has_tls_reloc
12195 && irela != internal_relocs)
12196 {
12197 /* Get tls info. */
f961d9dd 12198 unsigned char *tls_mask;
411e1bfb 12199
3a71aa26 12200 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12201 irela - 1, input_bfd))
12202 goto error_ret_free_internal;
e7b938ca 12203 if (*tls_mask != 0)
411e1bfb
AM		 12204 continue;
12205 }
12206
3b421ab3
AM		 12207 if (stub_type == ppc_stub_plt_call
12208 && irela + 1 < irelaend
12209 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12210 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12211 {
12212 if (!tocsave_find (htab, INSERT,
12213 &local_syms, irela + 1, input_bfd))
12214 goto error_ret_free_internal;
12215 }
12216 else if (stub_type == ppc_stub_plt_call)
12217 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12218
721956f4
AM		 12219 /* Support for grouping stub sections. */
12220 id_sec = htab->stub_group[section->id].link_sec;
12221
12222 /* Get the name of this stub. */
12223 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12224 if (!stub_name)
12225 goto error_ret_free_internal;
12226
12227 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12228 stub_name, FALSE, FALSE);
721956f4
AM		 12229 if (stub_entry != NULL)
12230 {
12231 /* The proper stub has already been created. */
12232 free (stub_name);
794e51c0
AM		 12233 if (stub_type == ppc_stub_plt_call_r2save)
12234 stub_entry->stub_type = stub_type;
721956f4
AM		 12235 continue;
12236 }
12237
25f53a85 12238 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12239 if (stub_entry == NULL)
12240 {
12241 free (stub_name);
6cdc0ccc
AM		 12242 error_ret_free_internal:
12243 if (elf_section_data (section)->relocs == NULL)
12244 free (internal_relocs);
12245 error_ret_free_local:
12246 if (local_syms != NULL
12247 && (symtab_hdr->contents
12248 != (unsigned char *) local_syms))
12249 free (local_syms);
b34976b6 12250 return FALSE;
721956f4
AM		 12251 }
12252
ad8e1ba5 12253 stub_entry->stub_type = stub_type;
794e51c0
AM		 12254 if (stub_type != ppc_stub_plt_call
12255 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12256 {
12257 stub_entry->target_value = code_value;
12258 stub_entry->target_section = code_sec;
12259 }
12260 else
12261 {
12262 stub_entry->target_value = sym_value;
12263 stub_entry->target_section = sym_sec;
12264 }
721956f4 12265 stub_entry->h = hash;
e054468f 12266 stub_entry->plt_ent = plt_ent;
6911b7dc 12267 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12268
12269 if (stub_entry->h != NULL)
12270 htab->stub_globals += 1;
721956f4
AM		 12271 }
12272
12273 /* We're done with the internal relocs, free them. */
6cdc0ccc 12274 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12275 free (internal_relocs);
721956f4 12276 }
6cdc0ccc
AM		 12277
12278 if (local_syms != NULL
12279 && symtab_hdr->contents != (unsigned char *) local_syms)
12280 {
12281 if (!info->keep_memory)
12282 free (local_syms);
12283 else
12284 symtab_hdr->contents = (unsigned char *) local_syms;
12285 }
721956f4
AM		 12286 }
12287
5c3dead3 12288 /* We may have added some stubs. Find out the new size of the
721956f4 12289 stub sections. */
e7d1c40c 12290 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12291 stub_sec != NULL;
12292 stub_sec = stub_sec->next)
e717da7e 12293 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12294 {
5c3dead3 12295 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12296 stub_sec->size = 0;
12297 stub_sec->reloc_count = 0;
84f5d08e 12298 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12299 }
eea6121a
AM		 12300
12301 htab->brlt->size = 0;
84f5d08e
AM		 12302 htab->brlt->reloc_count = 0;
12303 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12304 if (htab->relbrlt != NULL)
eea6121a 12305 htab->relbrlt->size = 0;
721956f4 12306
63bc6f6c 12307 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12308
176a0d42
AM		 12309 if (info->emitrelocations
12310 && htab->glink != NULL && htab->glink->size != 0)
12311 {
12312 htab->glink->reloc_count = 1;
12313 htab->glink->flags |= SEC_RELOC;
12314 }
12315
58d180e8
AM		 12316 if (htab->glink_eh_frame != NULL
12317 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12318 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12319 {
4bbe044a 12320 size_t size = 0, align;
58d180e8 12321
e7d1c40c 12322 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12323 stub_sec != NULL;
12324 stub_sec = stub_sec->next)
12325 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
da44f4e5 12326 size += 24;
58d180e8
AM		 12327 if (htab->glink != NULL && htab->glink->size != 0)
12328 size += 24;
12329 if (size != 0)
12330 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12331 align = 1;
12332 align <<= htab->glink_eh_frame->output_section->alignment_power;
12333 align -= 1;
12334 size = (size + align) & ~align;
58d180e8
AM		 12335 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12336 htab->glink_eh_frame->size = size;
12337 }
12338
e7d1c40c
AM		 12339 if (htab->params->plt_stub_align != 0)
12340 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12341 stub_sec != NULL;
12342 stub_sec = stub_sec->next)
12343 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12344 stub_sec->size = ((stub_sec->size
12345 + (1 << htab->params->plt_stub_align) - 1)
12346 & (-1 << htab->params->plt_stub_align));
794e51c0 12347
e7d1c40c 12348 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12349 stub_sec != NULL;
12350 stub_sec = stub_sec->next)
12351 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12352 && stub_sec->rawsize != stub_sec->size)
12353 break;
12354
12355 /* Exit from this loop when no stubs have been added, and no stubs
12356 have changed size. */
58d180e8
AM		 12357 if (stub_sec == NULL
12358 && (htab->glink_eh_frame == NULL
12359 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12360 break;
12361
721956f4 12362 /* Ask the linker to do its stuff. */
e7d1c40c 12363 (*htab->params->layout_sections_again) ();
721956f4
AM		 12364 }
12365
da44f4e5
AM		 12366 if (htab->glink_eh_frame != NULL
12367 && htab->glink_eh_frame->size != 0)
12368 {
12369 bfd_vma val;
12370 bfd_byte *p, *last_fde;
12371 size_t last_fde_len, size, align, pad;
12372 asection *stub_sec;
12373
12374 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12375 if (p == NULL)
12376 return FALSE;
12377 htab->glink_eh_frame->contents = p;
12378 last_fde = p;
12379
12380 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12381 /* CIE length (rewrite in case little-endian). */
12382 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12383 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12384 p += sizeof (glink_eh_frame_cie);
12385
12386 for (stub_sec = htab->params->stub_bfd->sections;
12387 stub_sec != NULL;
12388 stub_sec = stub_sec->next)
12389 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12390 {
12391 last_fde = p;
12392 last_fde_len = 20;
12393 /* FDE length. */
12394 bfd_put_32 (htab->elf.dynobj, 20, p);
12395 p += 4;
12396 /* CIE pointer. */
12397 val = p - htab->glink_eh_frame->contents;
12398 bfd_put_32 (htab->elf.dynobj, val, p);
12399 p += 4;
12400 /* Offset to stub section, written later. */
12401 p += 4;
12402 /* stub section size. */
12403 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12404 p += 4;
12405 /* Augmentation. */
12406 p += 1;
12407 /* Pad. */
12408 p += 7;
12409 }
12410 if (htab->glink != NULL && htab->glink->size != 0)
12411 {
12412 last_fde = p;
12413 last_fde_len = 20;
12414 /* FDE length. */
12415 bfd_put_32 (htab->elf.dynobj, 20, p);
12416 p += 4;
12417 /* CIE pointer. */
12418 val = p - htab->glink_eh_frame->contents;
12419 bfd_put_32 (htab->elf.dynobj, val, p);
12420 p += 4;
12421 /* Offset to .glink, written later. */
12422 p += 4;
12423 /* .glink size. */
12424 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12425 p += 4;
12426 /* Augmentation. */
12427 p += 1;
12428
12429 *p++ = DW_CFA_advance_loc + 1;
12430 *p++ = DW_CFA_register;
12431 *p++ = 65;
12432 *p++ = 12;
12433 *p++ = DW_CFA_advance_loc + 4;
12434 *p++ = DW_CFA_restore_extended;
12435 *p++ = 65;
12436 }
12437 /* Subsume any padding into the last FDE if user .eh_frame
12438 sections are aligned more than glink_eh_frame. Otherwise any
12439 zero padding will be seen as a terminator. */
12440 size = p - htab->glink_eh_frame->contents;
12441 align = 1;
12442 align <<= htab->glink_eh_frame->output_section->alignment_power;
12443 align -= 1;
12444 pad = ((size + align) & ~align) - size;
12445 htab->glink_eh_frame->size = size + pad;
12446 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12447 }
12448
d969d15f
AM		 12449 maybe_strip_output (info, htab->brlt);
12450 if (htab->glink_eh_frame != NULL)
12451 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12452
b34976b6 12453 return TRUE;
721956f4
AM		 12454}
12455
12456/* Called after we have determined section placement. If sections
805fc799 12457 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12458
805fc799 12459bfd_vma
1c865ab2 12460ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12461{
805fc799
AM		 12462 asection *s;
12463 bfd_vma TOCstart;
721956f4 12464
805fc799
AM		 12465 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12466 order. The TOC starts where the first of these sections starts. */
12467 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12468 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12469 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12470 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12471 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12472 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12473 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12474 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12475 {
12476 /* This may happen for
12477 o references to TOC base (SYM@toc / TOC[tc0]) without a
12478 .toc directive
12479 o bad linker script
12480 o --gc-sections and empty TOC sections
12481
12482 FIXME: Warn user? */
12483
12484 /* Look for a likely section. We probably won't even be
12485 using TOCstart. */
12486 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12487 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12488 | SEC_EXCLUDE))
805fc799
AM		 12489 == (SEC_ALLOC | SEC_SMALL_DATA))
12490 break;
721956f4 12491 if (s == NULL)
805fc799 12492 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12493 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12494 == (SEC_ALLOC | SEC_SMALL_DATA))
12495 break;
721956f4 12496 if (s == NULL)
805fc799 12497 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12498 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12499 == SEC_ALLOC)
805fc799 12500 break;
721956f4 12501 if (s == NULL)
805fc799 12502 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12503 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12504 break;
12505 }
721956f4 12506
805fc799
AM		 12507 TOCstart = 0;
12508 if (s != NULL)
12509 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12510
1c865ab2
AM		 12511 _bfd_set_gp_value (obfd, TOCstart);
12512
810d4e75 12513 if (info != NULL && s != NULL)
1c865ab2
AM		 12514 {
12515 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12516
810d4e75
AM		 12517 if (htab != NULL)
12518 {
12519 if (htab->elf.hgot != NULL)
12520 {
12521 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12522 htab->elf.hgot->root.u.def.section = s;
12523 }
12524 }
12525 else
1c865ab2 12526 {
810d4e75
AM		 12527 struct bfd_link_hash_entry *bh = NULL;
12528 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12529 s, TOC_BASE_OFF, NULL, FALSE,
12530 FALSE, &bh);
1c865ab2
AM		 12531 }
12532 }
805fc799 12533 return TOCstart;
721956f4
AM		 12534}
12535
a345bc8d
AM		 12536/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12537 write out any global entry stubs. */
12538
12539static bfd_boolean
12540build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12541{
12542 struct bfd_link_info *info;
12543 struct ppc_link_hash_table *htab;
12544 struct plt_entry *pent;
12545 asection *s;
12546
12547 if (h->root.type == bfd_link_hash_indirect)
12548 return TRUE;
12549
12550 if (!h->pointer_equality_needed)
12551 return TRUE;
12552
12553 if (h->def_regular)
12554 return TRUE;
12555
12556 info = inf;
12557 htab = ppc_hash_table (info);
12558 if (htab == NULL)
12559 return FALSE;
12560
12561 s = htab->glink;
12562 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12563 if (pent->plt.offset != (bfd_vma) -1
12564 && pent->addend == 0)
12565 {
12566 bfd_byte *p;
12567 asection *plt;
12568 bfd_vma off;
12569
a345bc8d 12570 p = s->contents + h->root.u.def.value;
33e44f2e 12571 plt = htab->elf.splt;
a345bc8d
AM		 12572 if (!htab->elf.dynamic_sections_created
12573 || h->dynindx == -1)
33e44f2e 12574 plt = htab->elf.iplt;
a345bc8d
AM		 12575 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12576 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12577
12578 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12579 {
12580 info->callbacks->einfo
12581 (_("%P: linkage table error against `%T'\n"),
12582 h->root.root.string);
12583 bfd_set_error (bfd_error_bad_value);
12584 htab->stub_error = TRUE;
12585 }
12586
7341d5e2
AM		 12587 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12588 if (htab->params->emit_stub_syms)
12589 {
12590 size_t len = strlen (h->root.root.string);
12591 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12592
12593 if (name == NULL)
12594 return FALSE;
12595
12596 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12597 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12598 if (h == NULL)
12599 return FALSE;
12600 if (h->root.type == bfd_link_hash_new)
12601 {
12602 h->root.type = bfd_link_hash_defined;
12603 h->root.u.def.section = s;
12604 h->root.u.def.value = p - s->contents;
12605 h->ref_regular = 1;
12606 h->def_regular = 1;
12607 h->ref_regular_nonweak = 1;
12608 h->forced_local = 1;
12609 h->non_elf = 0;
12610 }
12611 }
12612
a345bc8d
AM		 12613 if (PPC_HA (off) != 0)
12614 {
12615 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12616 p += 4;
12617 }
12618 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12619 p += 4;
12620 bfd_put_32 (s->owner, MTCTR_R12, p);
12621 p += 4;
12622 bfd_put_32 (s->owner, BCTR, p);
12623 break;
12624 }
12625 return TRUE;
12626}
12627
721956f4
AM		 12628/* Build all the stubs associated with the current output file.
12629 The stubs are kept in a hash table attached to the main linker
12630 hash table. This function is called via gldelf64ppc_finish. */
12631
b34976b6 12632bfd_boolean
e7d1c40c 12633ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12634 char **stats)
5d1634d7
AM		 12635{
12636 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12637 asection *stub_sec;
5d1634d7 12638 bfd_byte *p;
e717da7e 12639 int stub_sec_count = 0;
5d1634d7 12640
4dfe6ac6
NC		 12641 if (htab == NULL)
12642 return FALSE;
12643
eea6121a 12644 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12645 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12646 stub_sec != NULL;
12647 stub_sec = stub_sec->next)
eea6121a
AM		 12648 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12649 && stub_sec->size != 0)
e717da7e 12650 {
e7d1c40c 12651 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12652 if (stub_sec->contents == NULL)
12653 return FALSE;
12654 /* We want to check that built size is the same as calculated
12655 size. rawsize is a convenient location to use. */
12656 stub_sec->rawsize = stub_sec->size;
12657 stub_sec->size = 0;
e717da7e 12658 }
5d1634d7 12659
23eb7e01 12660 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12661 {
9f951329 12662 unsigned int indx;
ad8e1ba5 12663 bfd_vma plt0;
9f951329 12664
721956f4 12665 /* Build the .glink plt call stub. */
e7d1c40c 12666 if (htab->params->emit_stub_syms)
97b639ba
AM		 12667 {
12668 struct elf_link_hash_entry *h;
468392fb
AM		 12669 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12670 TRUE, FALSE, FALSE);
97b639ba
AM		 12671 if (h == NULL)
12672 return FALSE;
12673 if (h->root.type == bfd_link_hash_new)
12674 {
12675 h->root.type = bfd_link_hash_defined;
12676 h->root.u.def.section = htab->glink;
ee4bf8d2 12677 h->root.u.def.value = 8;
f5385ebf
AM		 12678 h->ref_regular = 1;
12679 h->def_regular = 1;
12680 h->ref_regular_nonweak = 1;
12681 h->forced_local = 1;
12682 h->non_elf = 0;
97b639ba
AM		 12683 }
12684 }
33e44f2e
AM		 12685 plt0 = (htab->elf.splt->output_section->vma
12686 + htab->elf.splt->output_offset
12687 - 16);
176a0d42
AM		 12688 if (info->emitrelocations)
12689 {
12690 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12691 if (r == NULL)
12692 return FALSE;
12693 r->r_offset = (htab->glink->output_offset
12694 + htab->glink->output_section->vma);
12695 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12696 r->r_addend = plt0;
12697 }
4ce794b7 12698 p = htab->glink->contents;
176a0d42 12699 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12700 bfd_put_64 (htab->glink->owner, plt0, p);
12701 p += 8;
b9e5796b
AM		 12702 if (htab->opd_abi)
12703 {
12704 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12705 p += 4;
12706 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12707 p += 4;
12708 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12709 p += 4;
12710 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12711 p += 4;
12712 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12713 p += 4;
12714 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12715 p += 4;
12716 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12717 p += 4;
12718 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12719 p += 4;
12720 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12721 p += 4;
12722 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12723 p += 4;
12724 }
12725 else
12726 {
12727 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12728 p += 4;
12729 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12730 p += 4;
12731 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12732 p += 4;
12733 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12734 p += 4;
12735 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12736 p += 4;
12737 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12738 p += 4;
12739 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12740 p += 4;
12741 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), 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, SRDI_R0_R0_2, 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 | 8, p);
12750 p += 4;
12751 }
4ce794b7 12752 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12753 p += 4;
ee4bf8d2
AM		 12754 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12755 {
12756 bfd_put_32 (htab->glink->owner, NOP, p);
12757 p += 4;
12758 }
ad8e1ba5 12759
9f951329
AM		 12760 /* Build the .glink lazy link call stubs. */
12761 indx = 0;
a345bc8d 12762 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12763 {
b9e5796b 12764 if (htab->opd_abi)
9f951329 12765 {
b9e5796b
AM		 12766 if (indx < 0x8000)
12767 {
12768 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12769 p += 4;
12770 }
12771 else
12772 {
12773 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12774 p += 4;
12775 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12776 p);
12777 p += 4;
12778 }
9f951329 12779 }
4ce794b7 12780 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12781 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12782 indx++;
9f951329
AM		 12783 p += 4;
12784 }
a345bc8d
AM		 12785
12786 /* Build .glink global entry stubs. */
12787 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12788 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12789 }
5d1634d7 12790
7341d5e2 12791 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12792 {
4ce794b7 12793 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12794 htab->brlt->size);
4ce794b7 12795 if (htab->brlt->contents == NULL)
b34976b6 12796 return FALSE;
721956f4 12797 }
ee75fd95 12798 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12799 {
12800 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12801 htab->relbrlt->size);
63bc6f6c
AM		 12802 if (htab->relbrlt->contents == NULL)
12803 return FALSE;
12804 }
5d1634d7 12805
721956f4
AM		 12806 /* Build the stubs as directed by the stub hash table. */
12807 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12808
aa8a7074
AM		 12809 if (htab->relbrlt != NULL)
12810 htab->relbrlt->reloc_count = 0;
12811
e7d1c40c
AM		 12812 if (htab->params->plt_stub_align != 0)
12813 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12814 stub_sec != NULL;
12815 stub_sec = stub_sec->next)
12816 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12817 stub_sec->size = ((stub_sec->size
12818 + (1 << htab->params->plt_stub_align) - 1)
12819 & (-1 << htab->params->plt_stub_align));
794e51c0 12820
e7d1c40c 12821 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12822 stub_sec != NULL;
12823 stub_sec = stub_sec->next)
e717da7e
AM		 12824 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12825 {
12826 stub_sec_count += 1;
eea6121a 12827 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12828 break;
12829 }
5d1634d7 12830
da44f4e5
AM		 12831 /* Note that the glink_eh_frame check here is not only testing that
12832 the generated size matched the calculated size but also that
12833 bfd_elf_discard_info didn't make any changes to the section. */
721956f4 12834 if (stub_sec != NULL
58d180e8
AM		 12835 || (htab->glink_eh_frame != NULL
12836 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12837 {
b34976b6 12838 htab->stub_error = TRUE;
8de848d8 12839 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12840 }
721956f4 12841
d2a300cf
AM		 12842 if (htab->stub_error)
12843 return FALSE;
12844
12845 if (stats != NULL)
12846 {
12847 *stats = bfd_malloc (500);
12848 if (*stats == NULL)
12849 return FALSE;
12850
ee75fd95 12851 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 12852 " branch %lu\n"
12853 " toc adjust %lu\n"
12854 " long branch %lu\n"
12855 " long toc adj %lu\n"
794e51c0 12856 " plt call %lu\n"
7341d5e2
AM		 12857 " plt call toc %lu\n"
12858 " global entry %lu"),
e717da7e 12859 stub_sec_count,
ee75fd95 12860 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 12861 htab->stub_count[ppc_stub_long_branch - 1],
12862 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12863 htab->stub_count[ppc_stub_plt_branch - 1],
12864 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 12865 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 12866 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12867 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 12868 }
12869 return TRUE;
5bd4f169
AM		 12870}
12871
99877b66
AM		 12872/* This function undoes the changes made by add_symbol_adjust. */
12873
12874static bfd_boolean
12875undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12876{
12877 struct ppc_link_hash_entry *eh;
12878
12879 if (h->root.type == bfd_link_hash_indirect)
12880 return TRUE;
12881
99877b66
AM		 12882 eh = (struct ppc_link_hash_entry *) h;
12883 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12884 return TRUE;
12885
12886 eh->elf.root.type = bfd_link_hash_undefined;
12887 return TRUE;
12888}
12889
12890void
12891ppc64_elf_restore_symbols (struct bfd_link_info *info)
12892{
12893 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 12894
12895 if (htab != NULL)
12896 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 12897}
12898
60124e18
AM		 12899/* What to do when ld finds relocations against symbols defined in
12900 discarded sections. */
12901
12902static unsigned int
12903ppc64_elf_action_discarded (asection *sec)
12904{
12905 if (strcmp (".opd", sec->name) == 0)
12906 return 0;
12907
12908 if (strcmp (".toc", sec->name) == 0)
12909 return 0;
12910
bce50a28
JJ		 12911 if (strcmp (".toc1", sec->name) == 0)
12912 return 0;
12913
60124e18
AM		 12914 return _bfd_elf_default_action_discarded (sec);
12915}
12916
5bd4f169
AM		 12917/* The RELOCATE_SECTION function is called by the ELF backend linker
12918 to handle the relocations for a section.
12919
12920 The relocs are always passed as Rela structures; if the section
12921 actually uses Rel structures, the r_addend field will always be
12922 zero.
12923
12924 This function is responsible for adjust the section contents as
12925 necessary, and (if using Rela relocs and generating a
1049f94e 12926 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 12927 necessary.
12928
12929 This function does not have to worry about setting the reloc
12930 address or the reloc symbol index.
12931
12932 LOCAL_SYMS is a pointer to the swapped in local symbols.
12933
12934 LOCAL_SECTIONS is an array giving the section in the input file
12935 corresponding to the st_shndx field of each local symbol.
12936
12937 The global hash table entry for the global symbols can be found
12938 via elf_sym_hashes (input_bfd).
12939
1049f94e 12940 When generating relocatable output, this function must handle
5bd4f169
AM		 12941 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12942 going to be the section symbol corresponding to the output
12943 section, which means that the addend must be adjusted
12944 accordingly. */
12945
b34976b6 12946static bfd_boolean
4ce794b7
AM		 12947ppc64_elf_relocate_section (bfd *output_bfd,
12948 struct bfd_link_info *info,
12949 bfd *input_bfd,
12950 asection *input_section,
12951 bfd_byte *contents,
12952 Elf_Internal_Rela *relocs,
12953 Elf_Internal_Sym *local_syms,
12954 asection **local_sections)
5bd4f169 12955{
65f38f15 12956 struct ppc_link_hash_table *htab;
5bd4f169
AM		 12957 Elf_Internal_Shdr *symtab_hdr;
12958 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 12959 Elf_Internal_Rela *rel;
12960 Elf_Internal_Rela *relend;
411e1bfb
AM		 12961 Elf_Internal_Rela outrel;
12962 bfd_byte *loc;
411e1bfb 12963 struct got_entry **local_got_ents;
5bd4f169 12964 bfd_vma TOCstart;
b34976b6
AM		 12965 bfd_boolean ret = TRUE;
12966 bfd_boolean is_opd;
794e51c0
AM		 12967 /* Assume 'at' branch hints. */
12968 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 12969 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 12970
65f38f15 12971 /* Initialize howto table if needed. */
5bd4f169 12972 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 12973 ppc_howto_init ();
12974
65f38f15 12975 htab = ppc_hash_table (info);
4dfe6ac6
NC		 12976 if (htab == NULL)
12977 return FALSE;
ee75fd95
AM		 12978
12979 /* Don't relocate stub sections. */
e7d1c40c 12980 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 12981 return TRUE;
12982
0c8d6e5c 12983 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 12984
411e1bfb 12985 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 12986 TOCstart = elf_gp (output_bfd);
0ffa91dd 12987 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 12988 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 12989 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 12990
5bd4f169
AM		 12991 rel = relocs;
12992 relend = relocs + input_section->reloc_count;
12993 for (; rel < relend; rel++)
12994 {
04c9666a 12995 enum elf_ppc64_reloc_type r_type;
31c76678 12996 bfd_vma addend;
5bd4f169
AM		 12997 bfd_reloc_status_type r;
12998 Elf_Internal_Sym *sym;
12999 asection *sec;
039b3fef
AM		 13000 struct elf_link_hash_entry *h_elf;
13001 struct ppc_link_hash_entry *h;
13002 struct ppc_link_hash_entry *fdh;
5bd4f169 13003 const char *sym_name;
0d4792f7 13004 unsigned long r_symndx, toc_symndx;
3a71aa26 13005 bfd_vma toc_addend;
f961d9dd
AM		 13006 unsigned char tls_mask, tls_gd, tls_type;
13007 unsigned char sym_type;
5bd4f169 13008 bfd_vma relocation;
b34976b6
AM		 13009 bfd_boolean unresolved_reloc;
13010 bfd_boolean warned;
bc30df16 13011 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13012 unsigned int insn;
e11840f9 13013 unsigned int mask;
721956f4
AM		 13014 struct ppc_stub_hash_entry *stub_entry;
13015 bfd_vma max_br_offset;
13016 bfd_vma from;
31c76678 13017 const Elf_Internal_Rela orig_rel = *rel;
b80eed39
AM		 13018 reloc_howto_type *howto;
13019 struct reloc_howto_struct alt_howto;
5bd4f169 13020
4ce794b7 13021 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13022 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13023
13024 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13025 symbol of the previous ADDR64 reloc. The symbol gives us the
13026 proper TOC base to use. */
13027 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13028 && rel != relocs
13029 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13030 && is_opd)
13031 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13032
4ce794b7
AM		 13033 sym = NULL;
13034 sec = NULL;
039b3fef 13035 h_elf = NULL;
4ce794b7 13036 sym_name = NULL;
b34976b6
AM		 13037 unresolved_reloc = FALSE;
13038 warned = FALSE;
65f38f15 13039
0b13192e 13040 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13041 {
13042 /* It's a local symbol. */
74f0fb50 13043 struct _opd_sec_data *opd;
4025353c 13044
5bd4f169
AM		 13045 sym = local_syms + r_symndx;
13046 sec = local_sections[r_symndx];
26c61ae5 13047 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13048 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13049 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13050 opd = get_opd_info (sec);
13051 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13052 {
74f0fb50 13053 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 13054 if (adjust == -1)
13055 relocation = 0;
13056 else
4cc603a5
AM		 13057 {
13058 /* If this is a relocation against the opd section sym
13059 and we have edited .opd, adjust the reloc addend so
13060 that ld -r and ld --emit-relocs output is correct.
13061 If it is a reloc against some other .opd symbol,
13062 then the symbol value will be adjusted later. */
13063 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13064 rel->r_addend += adjust;
13065 else
13066 relocation += adjust;
13067 }
1e2f5b6e 13068 }
5bd4f169
AM		 13069 }
13070 else
13071 {
62d887d4
L		 13072 bfd_boolean ignored;
13073
b2a8e766
AM		 13074 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13075 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13076 h_elf, sec, relocation,
62d887d4 13077 unresolved_reloc, warned, ignored);
039b3fef
AM		 13078 sym_name = h_elf->root.root.string;
13079 sym_type = h_elf->type;
b69fdb4e
AM		 13080 if (sec != NULL
13081 && sec->owner == output_bfd
13082 && strcmp (sec->name, ".opd") == 0)
13083 {
13084 /* This is a symbol defined in a linker script. All
13085 such are defined in output sections, even those
13086 defined by simple assignment from a symbol defined in
13087 an input section. Transfer the symbol to an
13088 appropriate input .opd section, so that a branch to
13089 this symbol will be mapped to the location specified
13090 by the opd entry. */
13091 struct bfd_link_order *lo;
13092 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13093 if (lo->type == bfd_indirect_link_order)
13094 {
13095 asection *isec = lo->u.indirect.section;
13096 if (h_elf->root.u.def.value >= isec->output_offset
13097 && h_elf->root.u.def.value < (isec->output_offset
13098 + isec->size))
13099 {
13100 h_elf->root.u.def.value -= isec->output_offset;
13101 h_elf->root.u.def.section = isec;
13102 sec = isec;
13103 break;
13104 }
13105 }
13106 }
5bd4f169 13107 }
039b3fef 13108 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13109
dbaa2011 13110 if (sec != NULL && discarded_section (sec))
e4067dbb 13111 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR		 13112 rel, 1, relend,
13113 ppc64_elf_howto_table[r_type], 0,
e4067dbb 13114 contents);
ab96bf03
AM		 13115
13116 if (info->relocatable)
13117 continue;
13118
f40da81b
AM		 13119 if (h != NULL && &h->elf == htab->elf.hgot)
13120 {
13121 relocation = (TOCstart
13122 + htab->stub_group[input_section->id].toc_off);
13123 sec = bfd_abs_section_ptr;
13124 unresolved_reloc = FALSE;
13125 }
13126
951fd09b
AM		 13127 /* TLS optimizations. Replace instruction sequences and relocs
13128 based on information we collected in tls_optimize. We edit
13129 RELOCS so that --emit-relocs will output something sensible
13130 for the final instruction stream. */
13131 tls_mask = 0;
13132 tls_gd = 0;
0d4792f7 13133 toc_symndx = 0;
727fc41e
AM		 13134 if (h != NULL)
13135 tls_mask = h->tls_mask;
13136 else if (local_got_ents != NULL)
411e1bfb 13137 {
e054468f
AM		 13138 struct plt_entry **local_plt = (struct plt_entry **)
13139 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13140 unsigned char *lgot_masks = (unsigned char *)
e054468f 13141 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13142 tls_mask = lgot_masks[r_symndx];
13143 }
13144 if (tls_mask == 0
13145 && (r_type == R_PPC64_TLS
13146 || r_type == R_PPC64_TLSGD
13147 || r_type == R_PPC64_TLSLD))
13148 {
13149 /* Check for toc tls entries. */
f961d9dd 13150 unsigned char *toc_tls;
0d4792f7 13151
727fc41e
AM		 13152 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13153 &local_syms, rel, input_bfd))
13154 return FALSE;
0d4792f7 13155
727fc41e
AM		 13156 if (toc_tls)
13157 tls_mask = *toc_tls;
0d4792f7
AM		 13158 }
13159
13160 /* Check that tls relocs are used with tls syms, and non-tls
13161 relocs are used with non-tls syms. */
cf35638d 13162 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13163 && r_type != R_PPC64_NONE
13164 && (h == NULL
039b3fef
AM		 13165 || h->elf.root.type == bfd_link_hash_defined
13166 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13167 && (IS_PPC64_TLS_RELOC (r_type)
13168 != (sym_type == STT_TLS
13169 || (sym_type == STT_SECTION
13170 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13171 {
727fc41e
AM		 13172 if (tls_mask != 0
13173 && (r_type == R_PPC64_TLS
13174 || r_type == R_PPC64_TLSGD
13175 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13176 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13177 ;
13178 else
25f53a85 13179 info->callbacks->einfo
1d483afe 13180 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13181 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13182 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13183 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13184 ppc64_elf_howto_table[r_type]->name,
13185 sym_name);
411e1bfb
AM		 13186 }
13187
13188 /* Ensure reloc mapping code below stays sane. */
13189 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13190 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13191 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13192 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13193 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13194 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13195 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13196 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13197 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13198 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13199 abort ();
0d4792f7 13200
411e1bfb
AM		 13201 switch (r_type)
13202 {
13203 default:
411e1bfb
AM		 13204 break;
13205
ba761f19
AM		 13206 case R_PPC64_LO_DS_OPT:
13207 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13208 if ((insn & (0x3f << 26)) != 58u << 26)
13209 abort ();
13210 insn += (14u << 26) - (58u << 26);
13211 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13212 r_type = R_PPC64_TOC16_LO;
13213 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13214 break;
13215
411e1bfb
AM		 13216 case R_PPC64_TOC16:
13217 case R_PPC64_TOC16_LO:
13218 case R_PPC64_TOC16_DS:
13219 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13220 {
13221 /* Check for toc tls entries. */
f961d9dd 13222 unsigned char *toc_tls;
951fd09b 13223 int retval;
411e1bfb 13224
3a71aa26
AM		 13225 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13226 &local_syms, rel, input_bfd);
951fd09b 13227 if (retval == 0)
411e1bfb
AM		 13228 return FALSE;
13229
13230 if (toc_tls)
13231 {
951fd09b 13232 tls_mask = *toc_tls;
411e1bfb
AM		 13233 if (r_type == R_PPC64_TOC16_DS
13234 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13235 {
13236 if (tls_mask != 0
13237 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13238 goto toctprel;
13239 }
411e1bfb 13240 else
951fd09b
AM		 13241 {
13242 /* If we found a GD reloc pair, then we might be
13243 doing a GD->IE transition. */
13244 if (retval == 2)
13245 {
13246 tls_gd = TLS_TPRELGD;
13247 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13248 goto tls_ldgd_opt;
951fd09b
AM		 13249 }
13250 else if (retval == 3)
13251 {
13252 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13253 goto tls_ldgd_opt;
951fd09b
AM		 13254 }
13255 }
411e1bfb
AM		 13256 }
13257 }
13258 break;
13259
9d6ded02
AM		 13260 case R_PPC64_GOT_TPREL16_HI:
13261 case R_PPC64_GOT_TPREL16_HA:
13262 if (tls_mask != 0
13263 && (tls_mask & TLS_TPREL) == 0)
13264 {
13265 rel->r_offset -= d_offset;
13266 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13267 r_type = R_PPC64_NONE;
13268 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13269 }
13270 break;
13271
411e1bfb
AM		 13272 case R_PPC64_GOT_TPREL16_DS:
13273 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13274 if (tls_mask != 0
13275 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13276 {
81407a69 13277 toctprel:
4fe5ca5b 13278 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 13279 insn &= 31 << 21;
13280 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 13281 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 13282 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13283 if (toc_symndx != 0)
13284 {
13285 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13286 rel->r_addend = toc_addend;
0d4792f7
AM		 13287 /* We changed the symbol. Start over in order to
13288 get h, sym, sec etc. right. */
13289 rel--;
13290 continue;
13291 }
13292 else
13293 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13294 }
13295 break;
13296
13297 case R_PPC64_TLS:
951fd09b
AM		 13298 if (tls_mask != 0
13299 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13300 {
411e1bfb 13301 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13302 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13303 if (insn == 0)
411e1bfb 13304 abort ();
411e1bfb 13305 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13306 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13307 PPC64_TPREL16_LO which is at low-order half-word. */
13308 rel->r_offset += d_offset;
0d4792f7
AM		 13309 r_type = R_PPC64_TPREL16_LO;
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
411e1bfb
AM		 13324 case R_PPC64_GOT_TLSGD16_HI:
13325 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13326 tls_gd = TLS_TPRELGD;
13327 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13328 goto tls_gdld_hi;
13329 break;
13330
411e1bfb
AM		 13331 case R_PPC64_GOT_TLSLD16_HI:
13332 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13333 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13334 {
951fd09b
AM		 13335 tls_gdld_hi:
13336 if ((tls_mask & tls_gd) != 0)
13337 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13338 + R_PPC64_GOT_TPREL16_DS);
13339 else
411e1bfb 13340 {
4fe5ca5b 13341 rel->r_offset -= d_offset;
727ac201 13342 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13343 r_type = R_PPC64_NONE;
411e1bfb 13344 }
951fd09b 13345 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13346 }
13347 break;
13348
951fd09b
AM		 13349 case R_PPC64_GOT_TLSGD16:
13350 case R_PPC64_GOT_TLSGD16_LO:
13351 tls_gd = TLS_TPRELGD;
13352 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13353 goto tls_ldgd_opt;
951fd09b 13354 break;
411e1bfb 13355
951fd09b
AM		 13356 case R_PPC64_GOT_TLSLD16:
13357 case R_PPC64_GOT_TLSLD16_LO:
13358 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13359 {
3a71aa26 13360 unsigned int insn1, insn2, insn3;
102890f0
AM		 13361 bfd_vma offset;
13362
13363 tls_ldgd_opt:
727fc41e
AM		 13364 offset = (bfd_vma) -1;
13365 /* If not using the newer R_PPC64_TLSGD/LD to mark
13366 __tls_get_addr calls, we must trust that the call
13367 stays with its arg setup insns, ie. that the next
13368 reloc is the __tls_get_addr call associated with
13369 the current reloc. Edit both insns. */
13370 if (input_section->has_tls_get_addr_call
13371 && rel + 1 < relend
13372 && branch_reloc_hash_match (input_bfd, rel + 1,
13373 htab->tls_get_addr,
13374 htab->tls_get_addr_fd))
13375 offset = rel[1].r_offset;
102890f0 13376 if ((tls_mask & tls_gd) != 0)
411e1bfb 13377 {
102890f0 13378 /* IE */
3a71aa26
AM		 13379 insn1 = bfd_get_32 (output_bfd,
13380 contents + rel->r_offset - d_offset);
102890f0
AM		 13381 insn1 &= (1 << 26) - (1 << 2);
13382 insn1 |= 58 << 26; /* ld */
13383 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13384 if (offset != (bfd_vma) -1)
f58d5a2d 13385 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13386 if ((tls_mask & TLS_EXPLICIT) == 0)
13387 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13388 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13389 else
102890f0
AM		 13390 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13391 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13392 }
13393 else
13394 {
13395 /* LE */
13396 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13397 insn2 = 0x38630000; /* addi 3,3,0 */
13398 if (tls_gd == 0)
951fd09b 13399 {
102890f0 13400 /* Was an LD reloc. */
1d483afe
AM		 13401 if (toc_symndx)
13402 sec = local_sections[toc_symndx];
13403 for (r_symndx = 0;
13404 r_symndx < symtab_hdr->sh_info;
13405 r_symndx++)
13406 if (local_sections[r_symndx] == sec)
13407 break;
13408 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13409 r_symndx = STN_UNDEF;
102890f0 13410 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13411 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13412 rel->r_addend -= (local_syms[r_symndx].st_value
13413 + sec->output_offset
13414 + sec->output_section->vma);
951fd09b 13415 }
102890f0 13416 else if (toc_symndx != 0)
3a71aa26
AM		 13417 {
13418 r_symndx = toc_symndx;
13419 rel->r_addend = toc_addend;
13420 }
102890f0
AM		 13421 r_type = R_PPC64_TPREL16_HA;
13422 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13423 if (offset != (bfd_vma) -1)
13424 {
13425 rel[1].r_info = ELF64_R_INFO (r_symndx,
13426 R_PPC64_TPREL16_LO);
13427 rel[1].r_offset = offset + d_offset;
13428 rel[1].r_addend = rel->r_addend;
13429 }
102890f0 13430 }
3a71aa26
AM		 13431 bfd_put_32 (output_bfd, insn1,
13432 contents + rel->r_offset - d_offset);
727fc41e
AM		 13433 if (offset != (bfd_vma) -1)
13434 {
13435 insn3 = bfd_get_32 (output_bfd,
13436 contents + offset + 4);
13437 if (insn3 == NOP
13438 || insn3 == CROR_151515 || insn3 == CROR_313131)
13439 {
13440 rel[1].r_offset += 4;
13441 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13442 insn2 = NOP;
13443 }
13444 bfd_put_32 (output_bfd, insn2, contents + offset);
13445 }
13446 if ((tls_mask & tls_gd) == 0
13447 && (tls_gd == 0 || toc_symndx != 0))
13448 {
13449 /* We changed the symbol. Start over in order
13450 to get h, sym, sec etc. right. */
13451 rel--;
13452 continue;
13453 }
13454 }
13455 break;
13456
13457 case R_PPC64_TLSGD:
13458 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13459 {
13460 unsigned int insn2, insn3;
13461 bfd_vma offset = rel->r_offset;
13462
13463 if ((tls_mask & TLS_TPRELGD) != 0)
13464 {
13465 /* IE */
13466 r_type = R_PPC64_NONE;
13467 insn2 = 0x7c636a14; /* add 3,3,13 */
13468 }
13469 else
13470 {
13471 /* LE */
13472 if (toc_symndx != 0)
13473 {
13474 r_symndx = toc_symndx;
13475 rel->r_addend = toc_addend;
13476 }
13477 r_type = R_PPC64_TPREL16_LO;
13478 rel->r_offset = offset + d_offset;
13479 insn2 = 0x38630000; /* addi 3,3,0 */
13480 }
13481 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13482 /* Zap the reloc on the _tls_get_addr call too. */
13483 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13484 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13485 insn3 = bfd_get_32 (output_bfd,
13486 contents + offset + 4);
102890f0
AM		 13487 if (insn3 == NOP
13488 || insn3 == CROR_151515 || insn3 == CROR_313131)
13489 {
727fc41e 13490 rel->r_offset += 4;
3a71aa26
AM		 13491 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13492 insn2 = NOP;
102890f0 13493 }
102890f0 13494 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13495 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 13496 {
102890f0
AM		 13497 rel--;
13498 continue;
411e1bfb 13499 }
411e1bfb 13500 }
411e1bfb
AM		 13501 break;
13502
727fc41e
AM		 13503 case R_PPC64_TLSLD:
13504 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13505 {
13506 unsigned int insn2, insn3;
13507 bfd_vma offset = rel->r_offset;
13508
13509 if (toc_symndx)
13510 sec = local_sections[toc_symndx];
13511 for (r_symndx = 0;
13512 r_symndx < symtab_hdr->sh_info;
13513 r_symndx++)
13514 if (local_sections[r_symndx] == sec)
13515 break;
13516 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13517 r_symndx = STN_UNDEF;
727fc41e 13518 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13519 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13520 rel->r_addend -= (local_syms[r_symndx].st_value
13521 + sec->output_offset
13522 + sec->output_section->vma);
13523
13524 r_type = R_PPC64_TPREL16_LO;
13525 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13526 rel->r_offset = offset + d_offset;
13527 /* Zap the reloc on the _tls_get_addr call too. */
13528 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13529 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13530 insn2 = 0x38630000; /* addi 3,3,0 */
13531 insn3 = bfd_get_32 (output_bfd,
13532 contents + offset + 4);
13533 if (insn3 == NOP
13534 || insn3 == CROR_151515 || insn3 == CROR_313131)
13535 {
13536 rel->r_offset += 4;
13537 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13538 insn2 = NOP;
13539 }
13540 bfd_put_32 (output_bfd, insn2, contents + offset);
13541 rel--;
13542 continue;
13543 }
13544 break;
13545
411e1bfb 13546 case R_PPC64_DTPMOD64:
951fd09b
AM		 13547 if (rel + 1 < relend
13548 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13549 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13550 {
951fd09b
AM		 13551 if ((tls_mask & TLS_GD) == 0)
13552 {
13553 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13554 if ((tls_mask & TLS_TPRELGD) != 0)
13555 r_type = R_PPC64_TPREL64;
13556 else
13557 {
4ce794b7 13558 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13559 r_type = R_PPC64_NONE;
13560 }
13561 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13562 }
13563 }
13564 else
13565 {
13566 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13567 {
4ce794b7 13568 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13569 r_type = R_PPC64_NONE;
951fd09b 13570 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13571 }
411e1bfb
AM		 13572 }
13573 break;
13574
13575 case R_PPC64_TPREL64:
951fd09b 13576 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13577 {
13578 r_type = R_PPC64_NONE;
13579 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13580 }
13581 break;
52a82034
AM		 13582
13583 case R_PPC64_REL16_HA:
13584 /* If we are generating a non-PIC executable, edit
13585 . 0: addis 2,12,.TOC.-0b@ha
13586 . addi 2,2,.TOC.-0b@l
13587 used by ELFv2 global entry points to set up r2, to
13588 . lis 2,.TOC.@ha
13589 . addi 2,2,.TOC.@l
13590 if .TOC. is in range. */
13591 if (!info->shared
810d4e75 13592 && !info->traditional_format
52a82034
AM		 13593 && h != NULL && &h->elf == htab->elf.hgot
13594 && rel + 1 < relend
13595 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13596 && rel[1].r_offset == rel->r_offset + 4
13597 && rel[1].r_addend == rel->r_addend + 4
13598 && relocation + 0x80008000 <= 0xffffffff)
13599 {
13600 unsigned int insn1, insn2;
13601 bfd_vma offset = rel->r_offset - d_offset;
13602 insn1 = bfd_get_32 (output_bfd, contents + offset);
13603 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13604 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13605 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13606 {
13607 r_type = R_PPC64_ADDR16_HA;
13608 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13609 rel->r_addend -= d_offset;
13610 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13611 rel[1].r_addend -= d_offset + 4;
13612 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13613 }
13614 }
13615 break;
411e1bfb
AM		 13616 }
13617
13618 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 13619 insn = 0;
b25116a9
AM		 13620 max_br_offset = 1 << 25;
13621 addend = rel->r_addend;
bc30df16 13622 reloc_dest = DEST_NORMAL;
65f38f15 13623 switch (r_type)
5bd4f169
AM		 13624 {
13625 default:
65f38f15 13626 break;
5bd4f169 13627
3b421ab3
AM		 13628 case R_PPC64_TOCSAVE:
13629 if (relocation + addend == (rel->r_offset
13630 + input_section->output_offset
13631 + input_section->output_section->vma)
13632 && tocsave_find (htab, NO_INSERT,
13633 &local_syms, rel, input_bfd))
13634 {
13635 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13636 if (insn == NOP
13637 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 13638 bfd_put_32 (input_bfd,
13639 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 13640 contents + rel->r_offset);
13641 }
13642 break;
13643
65f38f15
AM		 13644 /* Branch taken prediction relocations. */
13645 case R_PPC64_ADDR14_BRTAKEN:
13646 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 13647 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13648 /* Fall thru. */
65f38f15 13649
86c76c7b 13650 /* Branch not taken prediction relocations. */
65f38f15
AM		 13651 case R_PPC64_ADDR14_BRNTAKEN:
13652 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 13653 insn |= bfd_get_32 (output_bfd,
13654 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 13655 /* Fall thru. */
86c76c7b 13656
b25116a9
AM		 13657 case R_PPC64_REL14:
13658 max_br_offset = 1 << 15;
13659 /* Fall thru. */
5bd4f169 13660
65f38f15 13661 case R_PPC64_REL24:
ad8e1ba5
AM		 13662 /* Calls to functions with a different TOC, such as calls to
13663 shared objects, need to alter the TOC pointer. This is
13664 done using a linkage stub. A REL24 branching to these
13665 linkage stubs needs to be followed by a nop, as the nop
13666 will be replaced with an instruction to restore the TOC
13667 base pointer. */
8387904d 13668 fdh = h;
b31867b6
AM		 13669 if (h != NULL
13670 && h->oh != NULL
13671 && h->oh->is_func_descriptor)
13672 fdh = ppc_follow_link (h->oh);
31c76678
DK		 13673 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13674 htab);
6abec6bc 13675 if (stub_entry != NULL
ad8e1ba5 13676 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 13677 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 13678 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13679 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 13680 {
b25116a9 13681 bfd_boolean can_plt_call = FALSE;
721956f4 13682
ba8ca3e7
AM		 13683 /* All of these stubs will modify r2, so there must be a
13684 branch and link followed by a nop. The nop is
13685 replaced by an insn to restore r2. */
eea6121a 13686 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 13687 {
ba8ca3e7
AM		 13688 unsigned long br;
13689
13690 br = bfd_get_32 (input_bfd,
13691 contents + rel->r_offset);
13692 if ((br & 1) != 0)
41bd81ab 13693 {
ba8ca3e7
AM		 13694 unsigned long nop;
13695
13696 nop = bfd_get_32 (input_bfd,
13697 contents + rel->r_offset + 4);
13698 if (nop == NOP
13699 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 13700 {
ba8ca3e7
AM		 13701 if (h != NULL
13702 && (h == htab->tls_get_addr_fd
13703 || h == htab->tls_get_addr)
e7d1c40c 13704 && !htab->params->no_tls_get_addr_opt)
ba8ca3e7
AM		 13705 {
13706 /* Special stub used, leave nop alone. */
13707 }
13708 else
a078d95a
AM		 13709 bfd_put_32 (input_bfd,
13710 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 13711 contents + rel->r_offset + 4);
13712 can_plt_call = TRUE;
a7f2871e 13713 }
41bd81ab 13714 }
5bd4f169 13715 }
721956f4 13716
ba8ca3e7 13717 if (!can_plt_call && h != NULL)
721956f4 13718 {
ba8ca3e7
AM		 13719 const char *name = h->elf.root.root.string;
13720
13721 if (*name == '.')
13722 ++name;
13723
13724 if (strncmp (name, "__libc_start_main", 17) == 0
13725 && (name[17] == 0 || name[17] == '@'))
6ab189d5 13726 {
ba8ca3e7
AM		 13727 /* Allow crt1 branch to go via a toc adjusting
13728 stub. Other calls that never return could do
13729 the same, if we could detect such. */
b25116a9 13730 can_plt_call = TRUE;
6ab189d5 13731 }
ba8ca3e7
AM		 13732 }
13733
13734 if (!can_plt_call)
13735 {
13736 /* g++ as of 20130507 emits self-calls without a
13737 following nop. This is arguably wrong since we
13738 have conflicting information. On the one hand a
13739 global symbol and on the other a local call
13740 sequence, but don't error for this special case.
13741 It isn't possible to cheaply verify we have
13742 exactly such a call. Allow all calls to the same
13743 section. */
13744 asection *code_sec = sec;
13745
13746 if (get_opd_info (sec) != NULL)
ad8e1ba5 13747 {
ba8ca3e7
AM		 13748 bfd_vma off = (relocation + addend
13749 - sec->output_section->vma
13750 - sec->output_offset);
bc30df16 13751
ba8ca3e7 13752 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 13753 }
ba8ca3e7
AM		 13754 if (code_sec == input_section)
13755 can_plt_call = TRUE;
13756 }
13757
13758 if (!can_plt_call)
13759 {
4805fc55
AM		 13760 if (stub_entry->stub_type == ppc_stub_plt_call
13761 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13762 info->callbacks->einfo
13763 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13764 "recompile with -fPIC\n"),
13765 input_bfd, input_section, rel->r_offset, sym_name);
13766 else
13767 info->callbacks->einfo
13768 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13769 "(-mcmodel=small toc adjust stub)\n"),
13770 input_bfd, input_section, rel->r_offset, sym_name);
ba8ca3e7
AM		 13771
13772 bfd_set_error (bfd_error_bad_value);
13773 ret = FALSE;
721956f4
AM		 13774 }
13775
b25116a9 13776 if (can_plt_call
794e51c0
AM		 13777 && (stub_entry->stub_type == ppc_stub_plt_call
13778 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13779 unresolved_reloc = FALSE;
13780 }
13781
6abec6bc
AM		 13782 if ((stub_entry == NULL
13783 || stub_entry->stub_type == ppc_stub_long_branch
13784 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13785 && get_opd_info (sec) != NULL)
13786 {
13787 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13788 bfd_vma off = (relocation + addend
13789 - sec->output_section->vma
13790 - sec->output_offset);
aef36ac1 13791 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13792 if (dest != (bfd_vma) -1)
13793 {
13794 relocation = dest;
13795 addend = 0;
bc30df16 13796 reloc_dest = DEST_OPD;
8387904d
AM		 13797 }
13798 }
13799
b25116a9
AM		 13800 /* If the branch is out of reach we ought to have a long
13801 branch stub. */
13802 from = (rel->r_offset
13803 + input_section->output_offset
13804 + input_section->output_section->vma);
13805
6911b7dc
AM		 13806 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13807 ? fdh->elf.other
13808 : sym->st_other);
13809
6abec6bc
AM		 13810 if (stub_entry != NULL
13811 && (stub_entry->stub_type == ppc_stub_long_branch
13812 || stub_entry->stub_type == ppc_stub_plt_branch)
13813 && (r_type == R_PPC64_ADDR14_BRTAKEN
13814 || r_type == R_PPC64_ADDR14_BRNTAKEN
13815 || (relocation + addend - from + max_br_offset
13816 < 2 * max_br_offset)))
13817 /* Don't use the stub if this branch is in range. */
13818 stub_entry = NULL;
b25116a9
AM		 13819
13820 if (stub_entry != NULL)
13821 {
13822 /* Munge up the value and addend so that we call the stub
13823 rather than the procedure directly. */
13824 relocation = (stub_entry->stub_offset
13825 + stub_entry->stub_sec->output_offset
13826 + stub_entry->stub_sec->output_section->vma);
13827 addend = 0;
bc30df16 13828 reloc_dest = DEST_STUB;
3b421ab3 13829
794e51c0
AM		 13830 if ((stub_entry->stub_type == ppc_stub_plt_call
13831 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13832 && (ALWAYS_EMIT_R2SAVE
13833 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13834 && rel + 1 < relend
13835 && rel[1].r_offset == rel->r_offset + 4
13836 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13837 relocation += 4;
b25116a9
AM		 13838 }
13839
13840 if (insn != 0)
13841 {
794e51c0 13842 if (is_isa_v2)
721956f4 13843 {
b25116a9
AM		 13844 /* Set 'a' bit. This is 0b00010 in BO field for branch
13845 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13846 for branch on CTR insns (BO == 1a00t or 1a01t). */
13847 if ((insn & (0x14 << 21)) == (0x04 << 21))
13848 insn |= 0x02 << 21;
13849 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13850 insn |= 0x08 << 21;
13851 else
13852 break;
13853 }
13854 else
13855 {
13856 /* Invert 'y' bit if not the default. */
4cc603a5 13857 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13858 insn ^= 0x01 << 21;
721956f4 13859 }
b25116a9
AM		 13860
13861 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13862 }
e86ce104 13863
06da1e8e
AM		 13864 /* NOP out calls to undefined weak functions.
13865 We can thus call a weak function without first
13866 checking whether the function is defined. */
b25116a9 13867 else if (h != NULL
039b3fef 13868 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13869 && h->elf.dynindx == -1
b25116a9
AM		 13870 && r_type == R_PPC64_REL24
13871 && relocation == 0
4cc603a5 13872 && addend == 0)
e86ce104 13873 {
06da1e8e
AM		 13874 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13875 continue;
e86ce104 13876 }
65f38f15
AM		 13877 break;
13878 }
5bd4f169 13879
65f38f15 13880 /* Set `addend'. */
411e1bfb 13881 tls_type = 0;
65f38f15
AM		 13882 switch (r_type)
13883 {
13884 default:
25f53a85 13885 info->callbacks->einfo
bc30df16 13886 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13887 input_bfd, (int) r_type, sym_name);
5bd4f169 13888
65f38f15 13889 bfd_set_error (bfd_error_bad_value);
b34976b6 13890 ret = FALSE;
65f38f15 13891 continue;
5bd4f169 13892
65f38f15 13893 case R_PPC64_NONE:
411e1bfb 13894 case R_PPC64_TLS:
727fc41e
AM		 13895 case R_PPC64_TLSGD:
13896 case R_PPC64_TLSLD:
3b421ab3 13897 case R_PPC64_TOCSAVE:
04c9666a
AM		 13898 case R_PPC64_GNU_VTINHERIT:
13899 case R_PPC64_GNU_VTENTRY:
65f38f15 13900 continue;
5bd4f169
AM		 13901
13902 /* GOT16 relocations. Like an ADDR16 using the symbol's
13903 address in the GOT as relocation value instead of the
411e1bfb 13904 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13905 symbol and put the symbol value there. */
411e1bfb
AM		 13906 case R_PPC64_GOT_TLSGD16:
13907 case R_PPC64_GOT_TLSGD16_LO:
13908 case R_PPC64_GOT_TLSGD16_HI:
13909 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13910 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 13911 goto dogot;
13912
13913 case R_PPC64_GOT_TLSLD16:
13914 case R_PPC64_GOT_TLSLD16_LO:
13915 case R_PPC64_GOT_TLSLD16_HI:
13916 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13917 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 13918 goto dogot;
13919
13920 case R_PPC64_GOT_TPREL16_DS:
13921 case R_PPC64_GOT_TPREL16_LO_DS:
13922 case R_PPC64_GOT_TPREL16_HI:
13923 case R_PPC64_GOT_TPREL16_HA:
13924 tls_type = TLS_TLS | TLS_TPREL;
13925 goto dogot;
13926
13927 case R_PPC64_GOT_DTPREL16_DS:
13928 case R_PPC64_GOT_DTPREL16_LO_DS:
13929 case R_PPC64_GOT_DTPREL16_HI:
13930 case R_PPC64_GOT_DTPREL16_HA:
13931 tls_type = TLS_TLS | TLS_DTPREL;
13932 goto dogot;
13933
65f38f15
AM		 13934 case R_PPC64_GOT16:
13935 case R_PPC64_GOT16_LO:
13936 case R_PPC64_GOT16_HI:
13937 case R_PPC64_GOT16_HA:
13938 case R_PPC64_GOT16_DS:
13939 case R_PPC64_GOT16_LO_DS:
411e1bfb 13940 dogot:
5bd4f169
AM		 13941 {
13942 /* Relocation is to the entry for this symbol in the global
13943 offset table. */
e717da7e 13944 asection *got;
d881513a 13945 bfd_vma *offp;
5bd4f169 13946 bfd_vma off;
d881513a 13947 unsigned long indx = 0;
927be08e 13948 struct got_entry *ent;
65f38f15 13949
d881513a
AM		 13950 if (tls_type == (TLS_TLS | TLS_LD)
13951 && (h == NULL
f5385ebf 13952 || !h->elf.def_dynamic))
927be08e 13953 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13954 else
5bd4f169 13955 {
5bd4f169 13956
d881513a
AM		 13957 if (h != NULL)
13958 {
13959 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 13960 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13961 &h->elf)
d881513a 13962 || (info->shared
afe397ea 13963 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 13964 /* This is actually a static link, or it is a
13965 -Bsymbolic link and the symbol is defined
13966 locally, or the symbol was forced to be local
13967 because of a version file. */
13968 ;
13969 else
13970 {
14acf4dc 13971 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 13972 indx = h->elf.dynindx;
d881513a
AM		 13973 unresolved_reloc = FALSE;
13974 }
039b3fef 13975 ent = h->elf.got.glist;
d881513a 13976 }
411e1bfb 13977 else
5bd4f169 13978 {
d881513a
AM		 13979 if (local_got_ents == NULL)
13980 abort ();
13981 ent = local_got_ents[r_symndx];
5bd4f169 13982 }
d881513a
AM		 13983
13984 for (; ent != NULL; ent = ent->next)
31c76678 13985 if (ent->addend == orig_rel.r_addend
e717da7e 13986 && ent->owner == input_bfd
d881513a
AM		 13987 && ent->tls_type == tls_type)
13988 break;
5bd4f169 13989 }
411e1bfb 13990
927be08e
AM		 13991 if (ent == NULL)
13992 abort ();
13993 if (ent->is_indirect)
13994 ent = ent->got.ent;
13995 offp = &ent->got.offset;
13996 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 13997 if (got == NULL)
13998 abort ();
13999
411e1bfb
AM		 14000 /* The offset must always be a multiple of 8. We use the
14001 least significant bit to record whether we have already
14002 processed this entry. */
d881513a 14003 off = *offp;
411e1bfb
AM		 14004 if ((off & 1) != 0)
14005 off &= ~1;
5bd4f169
AM		 14006 else
14007 {
411e1bfb
AM		 14008 /* Generate relocs for the dynamic linker, except in
14009 the case of TLSLD where we'll use one entry per
14010 module. */
25f23106
AM		 14011 asection *relgot;
14012 bfd_boolean ifunc;
e717da7e 14013
d881513a 14014 *offp = off | 1;
25f23106
AM		 14015 relgot = NULL;
14016 ifunc = (h != NULL
14017 ? h->elf.type == STT_GNU_IFUNC
14018 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14019 if (ifunc)
33e44f2e 14020 relgot = htab->elf.irelplt;
19e08130
AM		 14021 else if ((info->shared || indx != 0)
14022 && (h == NULL
14023 || (tls_type == (TLS_TLS | TLS_LD)
14024 && !h->elf.def_dynamic)
14025 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14026 || h->elf.root.type != bfd_link_hash_undefweak))
14027 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14028 if (relgot != NULL)
5bd4f169 14029 {
e717da7e
AM		 14030 outrel.r_offset = (got->output_section->vma
14031 + got->output_offset
411e1bfb 14032 + off);
4cc603a5 14033 outrel.r_addend = addend;
d881513a 14034 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14035 {
411e1bfb 14036 outrel.r_addend = 0;
e515b051 14037 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14038 if (tls_type == (TLS_TLS | TLS_GD))
14039 {
e717da7e
AM		 14040 loc = relgot->contents;
14041 loc += (relgot->reloc_count++
d881513a
AM		 14042 * sizeof (Elf64_External_Rela));
14043 bfd_elf64_swap_reloca_out (output_bfd,
14044 &outrel, loc);
e515b051 14045 outrel.r_offset += 8;
4cc603a5 14046 outrel.r_addend = addend;
d881513a
AM		 14047 outrel.r_info
14048 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14049 }
411e1bfb 14050 }
951fd09b 14051 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14052 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14053 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14054 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14055 else if (indx != 0)
14056 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14057 else
81407a69 14058 {
25f23106
AM		 14059 if (ifunc)
14060 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14061 else
14062 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14063
14064 /* Write the .got section contents for the sake
14065 of prelink. */
e717da7e 14066 loc = got->contents + off;
23fbd6fa
JJ		 14067 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14068 loc);
81407a69 14069 }
81407a69
AM		 14070
14071 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14072 {
14073 outrel.r_addend += relocation;
14074 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 14075 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 14076 }
e717da7e
AM		 14077 loc = relgot->contents;
14078 loc += (relgot->reloc_count++
411e1bfb
AM		 14079 * sizeof (Elf64_External_Rela));
14080 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14081 }
14082
ad8e1ba5 14083 /* Init the .got section contents here if we're not
81407a69 14084 emitting a reloc. */
d881513a 14085 else
411e1bfb 14086 {
4cc603a5 14087 relocation += addend;
7b609f53
AM		 14088 if (tls_type == (TLS_TLS | TLS_LD))
14089 relocation = 1;
14090 else if (tls_type != 0)
411e1bfb 14091 {
e1918d23 14092 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 14093 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14094 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 14095
7b609f53
AM		 14096 if (tls_type == (TLS_TLS | TLS_GD))
14097 {
14098 bfd_put_64 (output_bfd, relocation,
e717da7e 14099 got->contents + off + 8);
7b609f53
AM		 14100 relocation = 1;
14101 }
411e1bfb 14102 }
7b609f53 14103
411e1bfb 14104 bfd_put_64 (output_bfd, relocation,
e717da7e 14105 got->contents + off);
5bd4f169
AM		 14106 }
14107 }
14108
65f38f15
AM		 14109 if (off >= (bfd_vma) -2)
14110 abort ();
14111
bf102f86
AM		 14112 relocation = got->output_section->vma + got->output_offset + off;
14113 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 14114 }
65f38f15
AM		 14115 break;
14116
14117 case R_PPC64_PLT16_HA:
14118 case R_PPC64_PLT16_HI:
14119 case R_PPC64_PLT16_LO:
14120 case R_PPC64_PLT32:
14121 case R_PPC64_PLT64:
14122 /* Relocation is to the entry for this symbol in the
14123 procedure linkage table. */
14124
14125 /* Resolve a PLT reloc against a local symbol directly,
14126 without using the procedure linkage table. */
14127 if (h == NULL)
14128 break;
14129
411e1bfb
AM		 14130 /* It's possible that we didn't make a PLT entry for this
14131 symbol. This happens when statically linking PIC code,
14132 or when using -Bsymbolic. Go find a match if there is a
14133 PLT entry. */
33e44f2e 14134 if (htab->elf.splt != NULL)
65f38f15 14135 {
411e1bfb 14136 struct plt_entry *ent;
039b3fef 14137 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14138 if (ent->plt.offset != (bfd_vma) -1
14139 && ent->addend == orig_rel.r_addend)
411e1bfb 14140 {
33e44f2e
AM		 14141 relocation = (htab->elf.splt->output_section->vma
14142 + htab->elf.splt->output_offset
411e1bfb
AM		 14143 + ent->plt.offset);
14144 unresolved_reloc = FALSE;
a345bc8d 14145 break;
411e1bfb 14146 }
65f38f15 14147 }
65f38f15 14148 break;
5bd4f169 14149
0b13192e
AM		 14150 case R_PPC64_TOC:
14151 /* Relocation value is TOC base. */
14152 relocation = TOCstart;
cf35638d 14153 if (r_symndx == STN_UNDEF)
0b13192e 14154 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 14155 else if (unresolved_reloc)
14156 ;
14157 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 14158 relocation += htab->stub_group[sec->id].toc_off;
14159 else
14160 unresolved_reloc = TRUE;
ab96bf03 14161 goto dodyn;
0b13192e 14162
5bd4f169
AM		 14163 /* TOC16 relocs. We want the offset relative to the TOC base,
14164 which is the address of the start of the TOC plus 0x8000.
14165 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14166 in this order. */
65f38f15
AM		 14167 case R_PPC64_TOC16:
14168 case R_PPC64_TOC16_LO:
14169 case R_PPC64_TOC16_HI:
14170 case R_PPC64_TOC16_DS:
14171 case R_PPC64_TOC16_LO_DS:
14172 case R_PPC64_TOC16_HA:
ad8e1ba5 14173 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 14174 break;
14175
14176 /* Relocate against the beginning of the section. */
65f38f15
AM		 14177 case R_PPC64_SECTOFF:
14178 case R_PPC64_SECTOFF_LO:
14179 case R_PPC64_SECTOFF_HI:
14180 case R_PPC64_SECTOFF_DS:
14181 case R_PPC64_SECTOFF_LO_DS:
14182 case R_PPC64_SECTOFF_HA:
4ce794b7 14183 if (sec != NULL)
65f38f15 14184 addend -= sec->output_section->vma;
5bd4f169
AM		 14185 break;
14186
25f23106
AM		 14187 case R_PPC64_REL16:
14188 case R_PPC64_REL16_LO:
14189 case R_PPC64_REL16_HI:
14190 case R_PPC64_REL16_HA:
14191 break;
14192
721956f4
AM		 14193 case R_PPC64_REL14:
14194 case R_PPC64_REL14_BRNTAKEN:
14195 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14196 case R_PPC64_REL24:
14197 break;
14198
411e1bfb
AM		 14199 case R_PPC64_TPREL16:
14200 case R_PPC64_TPREL16_LO:
14201 case R_PPC64_TPREL16_HI:
14202 case R_PPC64_TPREL16_HA:
14203 case R_PPC64_TPREL16_DS:
14204 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14205 case R_PPC64_TPREL16_HIGH:
14206 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14207 case R_PPC64_TPREL16_HIGHER:
14208 case R_PPC64_TPREL16_HIGHERA:
14209 case R_PPC64_TPREL16_HIGHEST:
14210 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14211 if (h != NULL
14212 && h->elf.root.type == bfd_link_hash_undefweak
14213 && h->elf.dynindx == -1)
14214 {
14215 /* Make this relocation against an undefined weak symbol
14216 resolve to zero. This is really just a tweak, since
14217 code using weak externs ought to check that they are
14218 defined before using them. */
14219 bfd_byte *p = contents + rel->r_offset - d_offset;
14220
14221 insn = bfd_get_32 (output_bfd, p);
14222 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14223 if (insn != 0)
14224 bfd_put_32 (output_bfd, insn, p);
14225 break;
14226 }
e1918d23 14227 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14228 if (info->shared)
14229 /* The TPREL16 relocs shouldn't really be used in shared
14230 libs as they will result in DT_TEXTREL being set, but
14231 support them anyway. */
14232 goto dodyn;
14233 break;
14234
14235 case R_PPC64_DTPREL16:
14236 case R_PPC64_DTPREL16_LO:
14237 case R_PPC64_DTPREL16_HI:
14238 case R_PPC64_DTPREL16_HA:
14239 case R_PPC64_DTPREL16_DS:
14240 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14241 case R_PPC64_DTPREL16_HIGH:
14242 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14243 case R_PPC64_DTPREL16_HIGHER:
14244 case R_PPC64_DTPREL16_HIGHERA:
14245 case R_PPC64_DTPREL16_HIGHEST:
14246 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 14247 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14248 break;
14249
45965137
AM		 14250 case R_PPC64_ADDR64_LOCAL:
14251 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14252 ? h->elf.other
14253 : sym->st_other);
14254 break;
14255
e515b051
AM		 14256 case R_PPC64_DTPMOD64:
14257 relocation = 1;
14258 addend = 0;
14259 goto dodyn;
14260
411e1bfb 14261 case R_PPC64_TPREL64:
e1918d23 14262 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14263 goto dodyn;
14264
14265 case R_PPC64_DTPREL64:
e1918d23 14266 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14267 /* Fall thru */
14268
65f38f15
AM		 14269 /* Relocations that may need to be propagated if this is a
14270 dynamic object. */
04c9666a 14271 case R_PPC64_REL30:
65f38f15
AM		 14272 case R_PPC64_REL32:
14273 case R_PPC64_REL64:
14274 case R_PPC64_ADDR14:
14275 case R_PPC64_ADDR14_BRNTAKEN:
14276 case R_PPC64_ADDR14_BRTAKEN:
14277 case R_PPC64_ADDR16:
14278 case R_PPC64_ADDR16_DS:
14279 case R_PPC64_ADDR16_HA:
14280 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14281 case R_PPC64_ADDR16_HIGH:
14282 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14283 case R_PPC64_ADDR16_HIGHER:
14284 case R_PPC64_ADDR16_HIGHERA:
14285 case R_PPC64_ADDR16_HIGHEST:
14286 case R_PPC64_ADDR16_HIGHESTA:
14287 case R_PPC64_ADDR16_LO:
14288 case R_PPC64_ADDR16_LO_DS:
14289 case R_PPC64_ADDR24:
65f38f15
AM		 14290 case R_PPC64_ADDR32:
14291 case R_PPC64_ADDR64:
14292 case R_PPC64_UADDR16:
14293 case R_PPC64_UADDR32:
14294 case R_PPC64_UADDR64:
411e1bfb 14295 dodyn:
5d1634d7 14296 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14297 break;
14298
41bd81ab
AM		 14299 if (NO_OPD_RELOCS && is_opd)
14300 break;
14301
65f38f15 14302 if ((info->shared
4e795f50 14303 && (h == NULL
039b3fef
AM		 14304 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14305 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14306 && (must_be_dyn_reloc (info, r_type)
039b3fef 14307 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 14308 || (ELIMINATE_COPY_RELOCS
14309 && !info->shared
65f38f15 14310 && h != NULL
039b3fef 14311 && h->elf.dynindx != -1
f5385ebf 14312 && !h->elf.non_got_ref
25f23106
AM		 14313 && !h->elf.def_regular)
14314 || (!info->shared
14315 && (h != NULL
14316 ? h->elf.type == STT_GNU_IFUNC
14317 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14318 {
b34976b6 14319 bfd_boolean skip, relocate;
65f38f15 14320 asection *sreloc;
1cf1f670 14321 bfd_vma out_off;
65f38f15
AM		 14322
14323 /* When generating a dynamic object, these relocations
14324 are copied into the output file to be resolved at run
14325 time. */
14326
b34976b6
AM		 14327 skip = FALSE;
14328 relocate = FALSE;
65f38f15 14329
1cf1f670
AM		 14330 out_off = _bfd_elf_section_offset (output_bfd, info,
14331 input_section, rel->r_offset);
14332 if (out_off == (bfd_vma) -1)
b34976b6 14333 skip = TRUE;
1cf1f670 14334 else if (out_off == (bfd_vma) -2)
b34976b6 14335 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14336 out_off += (input_section->output_section->vma
14337 + input_section->output_offset);
14338 outrel.r_offset = out_off;
411e1bfb 14339 outrel.r_addend = rel->r_addend;
65f38f15 14340
1cf1f670
AM		 14341 /* Optimize unaligned reloc use. */
14342 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14343 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14344 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14345 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14346 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14347 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14348 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14349 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14350 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14351
65f38f15 14352 if (skip)
0bb2d96a 14353 memset (&outrel, 0, sizeof outrel);
afe397ea 14354 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14355 && !is_opd
14356 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14357 {
14358 BFD_ASSERT (h->elf.dynindx != -1);
14359 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14360 }
65f38f15
AM		 14361 else
14362 {
41bd81ab
AM		 14363 /* This symbol is local, or marked to become local,
14364 or this is an opd section reloc which must point
14365 at a local function. */
65f38f15 14366 outrel.r_addend += relocation;
e86ce104 14367 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14368 {
3fad3c7c 14369 if (is_opd && h != NULL)
afbe61cf
AM		 14370 {
14371 /* Lie about opd entries. This case occurs
14372 when building shared libraries and we
14373 reference a function in another shared
3fad3c7c
AM		 14374 lib. The same thing happens for a weak
14375 definition in an application that's
14376 overridden by a strong definition in a
14377 shared lib. (I believe this is a generic
14378 bug in binutils handling of weak syms.)
14379 In these cases we won't use the opd
1e2f5b6e 14380 entry in this lib. */
b34976b6 14381 unresolved_reloc = FALSE;
afbe61cf 14382 }
25f23106
AM		 14383 if (!is_opd
14384 && r_type == R_PPC64_ADDR64
14385 && (h != NULL
14386 ? h->elf.type == STT_GNU_IFUNC
14387 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14388 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14389 else
14390 {
14391 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14392
25f23106
AM		 14393 /* We need to relocate .opd contents for ld.so.
14394 Prelink also wants simple and consistent rules
14395 for relocs. This make all RELATIVE relocs have
14396 *r_offset equal to r_addend. */
14397 relocate = TRUE;
14398 }
65f38f15
AM		 14399 }
14400 else
14401 {
14402 long indx = 0;
14403
25f23106
AM		 14404 if (h != NULL
14405 ? h->elf.type == STT_GNU_IFUNC
14406 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14407 {
25f53a85 14408 info->callbacks->einfo
bc30df16
AM		 14409 (_("%P: %H: %s for indirect "
14410 "function `%T' unsupported\n"),
25f53a85 14411 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14412 ppc64_elf_howto_table[r_type]->name,
14413 sym_name);
14414 ret = FALSE;
14415 }
cf35638d 14416 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14417 ;
14418 else if (sec == NULL || sec->owner == NULL)
14419 {
14420 bfd_set_error (bfd_error_bad_value);
b34976b6 14421 return FALSE;
65f38f15
AM		 14422 }
14423 else
14424 {
14425 asection *osec;
14426
14427 osec = sec->output_section;
14428 indx = elf_section_data (osec)->dynindx;
14429
74541ad4
AM		 14430 if (indx == 0)
14431 {
14432 if ((osec->flags & SEC_READONLY) == 0
14433 && htab->elf.data_index_section != NULL)
14434 osec = htab->elf.data_index_section;
14435 else
14436 osec = htab->elf.text_index_section;
14437 indx = elf_section_data (osec)->dynindx;
14438 }
14439 BFD_ASSERT (indx != 0);
14440
65f38f15
AM		 14441 /* We are turning this relocation into one
14442 against a section symbol, so subtract out
14443 the output section's address but not the
14444 offset of the input section in the output
14445 section. */
14446 outrel.r_addend -= osec->vma;
14447 }
14448
14449 outrel.r_info = ELF64_R_INFO (indx, r_type);
14450 }
14451 }
14452
14453 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14454 if (h != NULL
14455 ? h->elf.type == STT_GNU_IFUNC
14456 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14457 sreloc = htab->elf.irelplt;
65f38f15
AM		 14458 if (sreloc == NULL)
14459 abort ();
14460
dfbb6ac9
AM		 14461 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14462 >= sreloc->size)
14463 abort ();
947216bf
AM		 14464 loc = sreloc->contents;
14465 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14466 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14467
14468 /* If this reloc is against an external symbol, it will
14469 be computed at runtime, so there's no need to do
81407a69
AM		 14470 anything now. However, for the sake of prelink ensure
14471 that the section contents are a known value. */
65f38f15 14472 if (! relocate)
81407a69
AM		 14473 {
14474 unresolved_reloc = FALSE;
14475 /* The value chosen here is quite arbitrary as ld.so
14476 ignores section contents except for the special
14477 case of .opd where the contents might be accessed
14478 before relocation. Choose zero, as that won't
14479 cause reloc overflow. */
14480 relocation = 0;
14481 addend = 0;
14482 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14483 to improve backward compatibility with older
14484 versions of ld. */
14485 if (r_type == R_PPC64_ADDR64)
14486 addend = outrel.r_addend;
14487 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14488 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14489 addend = (input_section->output_section->vma
14490 + input_section->output_offset
14491 + rel->r_offset);
81407a69 14492 }
65f38f15 14493 }
5bd4f169
AM		 14494 break;
14495
65f38f15
AM		 14496 case R_PPC64_COPY:
14497 case R_PPC64_GLOB_DAT:
14498 case R_PPC64_JMP_SLOT:
25f23106 14499 case R_PPC64_JMP_IREL:
65f38f15
AM		 14500 case R_PPC64_RELATIVE:
14501 /* We shouldn't ever see these dynamic relocs in relocatable
14502 files. */
ae9a127f 14503 /* Fall through. */
65f38f15
AM		 14504
14505 case R_PPC64_PLTGOT16:
14506 case R_PPC64_PLTGOT16_DS:
14507 case R_PPC64_PLTGOT16_HA:
14508 case R_PPC64_PLTGOT16_HI:
14509 case R_PPC64_PLTGOT16_LO:
14510 case R_PPC64_PLTGOT16_LO_DS:
14511 case R_PPC64_PLTREL32:
14512 case R_PPC64_PLTREL64:
14513 /* These ones haven't been implemented yet. */
14514
25f53a85 14515 info->callbacks->einfo
bc30df16 14516 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14517 input_bfd,
4ce794b7 14518 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14519
14520 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14521 ret = FALSE;
5bd4f169 14522 continue;
65f38f15 14523 }
5bd4f169 14524
67f0cbdb
AM		 14525 /* Multi-instruction sequences that access the TOC can be
14526 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14527 to nop; addi rb,r2,x; */
14528 switch (r_type)
14529 {
14530 default:
14531 break;
14532
14533 case R_PPC64_GOT_TLSLD16_HI:
14534 case R_PPC64_GOT_TLSGD16_HI:
14535 case R_PPC64_GOT_TPREL16_HI:
14536 case R_PPC64_GOT_DTPREL16_HI:
14537 case R_PPC64_GOT16_HI:
14538 case R_PPC64_TOC16_HI:
14539 /* These relocs would only be useful if building up an
14540 offset to later add to r2, perhaps in an indexed
14541 addressing mode instruction. Don't try to optimize.
14542 Unfortunately, the possibility of someone building up an
14543 offset like this or even with the HA relocs, means that
14544 we need to check the high insn when optimizing the low
14545 insn. */
14546 break;
14547
14548 case R_PPC64_GOT_TLSLD16_HA:
14549 case R_PPC64_GOT_TLSGD16_HA:
14550 case R_PPC64_GOT_TPREL16_HA:
14551 case R_PPC64_GOT_DTPREL16_HA:
14552 case R_PPC64_GOT16_HA:
14553 case R_PPC64_TOC16_HA:
98528052 14554 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14555 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14556 {
14557 bfd_byte *p = contents + (rel->r_offset & ~3);
14558 bfd_put_32 (input_bfd, NOP, p);
14559 }
67f0cbdb
AM		 14560 break;
14561
14562 case R_PPC64_GOT_TLSLD16_LO:
14563 case R_PPC64_GOT_TLSGD16_LO:
14564 case R_PPC64_GOT_TPREL16_LO_DS:
14565 case R_PPC64_GOT_DTPREL16_LO_DS:
14566 case R_PPC64_GOT16_LO:
14567 case R_PPC64_GOT16_LO_DS:
14568 case R_PPC64_TOC16_LO:
14569 case R_PPC64_TOC16_LO_DS:
98528052 14570 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14571 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14572 {
14573 bfd_byte *p = contents + (rel->r_offset & ~3);
14574 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14575 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14576 {
14577 /* Transform addic to addi when we change reg. */
14578 insn &= ~((0x3f << 26) | (0x1f << 16));
14579 insn |= (14u << 26) | (2 << 16);
14580 }
14581 else
67f0cbdb 14582 {
98528052
AM		 14583 insn &= ~(0x1f << 16);
14584 insn |= 2 << 16;
67f0cbdb 14585 }
560c8763 14586 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14587 }
14588 break;
14589 }
14590
65f38f15 14591 /* Do any further special processing. */
b80eed39 14592 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14593 switch (r_type)
14594 {
14595 default:
14596 break;
14597
25f23106 14598 case R_PPC64_REL16_HA:
f9c6b907
AM		 14599 case R_PPC64_ADDR16_HA:
14600 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14601 case R_PPC64_ADDR16_HIGHERA:
14602 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14603 case R_PPC64_TOC16_HA:
14604 case R_PPC64_SECTOFF_HA:
411e1bfb 14605 case R_PPC64_TPREL16_HA:
f9c6b907 14606 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14607 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14608 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14609 case R_PPC64_DTPREL16_HA:
14610 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14611 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14612 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14613 /* It's just possible that this symbol is a weak symbol
14614 that's not actually defined anywhere. In that case,
14615 'sec' would be NULL, and we should leave the symbol
14616 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14617 if (sec == NULL)
14618 break;
14619 /* Fall thru */
14620
14621 case R_PPC64_GOT16_HA:
14622 case R_PPC64_PLTGOT16_HA:
14623 case R_PPC64_PLT16_HA:
14624 case R_PPC64_GOT_TLSGD16_HA:
14625 case R_PPC64_GOT_TLSLD16_HA:
14626 case R_PPC64_GOT_TPREL16_HA:
14627 case R_PPC64_GOT_DTPREL16_HA:
14628 /* Add 0x10000 if sign bit in 0:15 is set.
14629 Bits 0:15 are not used. */
14630 addend += 0x8000;
65f38f15
AM		 14631 break;
14632
14633 case R_PPC64_ADDR16_DS:
14634 case R_PPC64_ADDR16_LO_DS:
14635 case R_PPC64_GOT16_DS:
14636 case R_PPC64_GOT16_LO_DS:
14637 case R_PPC64_PLT16_LO_DS:
14638 case R_PPC64_SECTOFF_DS:
14639 case R_PPC64_SECTOFF_LO_DS:
14640 case R_PPC64_TOC16_DS:
14641 case R_PPC64_TOC16_LO_DS:
14642 case R_PPC64_PLTGOT16_DS:
14643 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14644 case R_PPC64_GOT_TPREL16_DS:
14645 case R_PPC64_GOT_TPREL16_LO_DS:
14646 case R_PPC64_GOT_DTPREL16_DS:
14647 case R_PPC64_GOT_DTPREL16_LO_DS:
14648 case R_PPC64_TPREL16_DS:
14649 case R_PPC64_TPREL16_LO_DS:
14650 case R_PPC64_DTPREL16_DS:
14651 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14652 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14653 mask = 3;
14654 /* If this reloc is against an lq insn, then the value must be
14655 a multiple of 16. This is somewhat of a hack, but the
14656 "correct" way to do this by defining _DQ forms of all the
14657 _DS relocs bloats all reloc switches in this file. It
14658 doesn't seem to make much sense to use any of these relocs
14659 in data, so testing the insn should be safe. */
494dac0c 14660 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14661 mask = 15;
14662 if (((relocation + addend) & mask) != 0)
65f38f15 14663 {
25f53a85 14664 info->callbacks->einfo
8de848d8 14665 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14666 input_bfd, input_section, rel->r_offset,
b80eed39 14667 howto->name,
adadcc0c 14668 mask + 1);
65f38f15 14669 bfd_set_error (bfd_error_bad_value);
b34976b6 14670 ret = FALSE;
65f38f15
AM		 14671 continue;
14672 }
14673 break;
5bd4f169
AM		 14674 }
14675
239e1f3a
AM		 14676 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14677 because such sections are not SEC_ALLOC and thus ld.so will
14678 not process them. */
65f38f15 14679 if (unresolved_reloc
239e1f3a 14680 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14681 && h->elf.def_dynamic)
14682 && _bfd_elf_section_offset (output_bfd, info, input_section,
14683 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14684 {
25f53a85 14685 info->callbacks->einfo
bc30df16 14686 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14687 input_bfd, input_section, rel->r_offset,
b80eed39 14688 howto->name,
039b3fef 14689 h->elf.root.root.string);
b34976b6 14690 ret = FALSE;
9c07fe7c 14691 }
5bd4f169 14692
b80eed39
AM		 14693 /* 16-bit fields in insns mostly have signed values, but a
14694 few insns have 16-bit unsigned values. Really, we should
14695 have different reloc types. */
14696 if (howto->complain_on_overflow != complain_overflow_dont
14697 && howto->dst_mask == 0xffff
14698 && (input_section->flags & SEC_CODE) != 0)
14699 {
14700 enum complain_overflow complain = complain_overflow_signed;
14701
14702 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14703 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14704 complain = complain_overflow_bitfield;
14705 else if (howto->rightshift == 0
14706 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14707 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14708 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14709 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14710 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14711 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14712 complain = complain_overflow_unsigned;
14713 if (howto->complain_on_overflow != complain)
14714 {
14715 alt_howto = *howto;
14716 alt_howto.complain_on_overflow = complain;
14717 howto = &alt_howto;
14718 }
14719 }
14720
14721 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14722 rel->r_offset, relocation, addend);
5bd4f169 14723
ef60b7ff 14724 if (r != bfd_reloc_ok)
5bd4f169 14725 {
bc30df16 14726 char *more_info = NULL;
b80eed39 14727 const char *reloc_name = howto->name;
bc30df16
AM		 14728
14729 if (reloc_dest != DEST_NORMAL)
14730 {
14731 more_info = bfd_malloc (strlen (reloc_name) + 8);
14732 if (more_info != NULL)
14733 {
14734 strcpy (more_info, reloc_name);
14735 strcat (more_info, (reloc_dest == DEST_OPD
14736 ? " (OPD)" : " (stub)"));
14737 reloc_name = more_info;
14738 }
14739 }
14740
cd27b276 14741 if (r == bfd_reloc_overflow)
5bd4f169 14742 {
cd27b276
AM		 14743 if (warned)
14744 continue;
14745 if (h != NULL
039b3fef 14746 && h->elf.root.type == bfd_link_hash_undefweak
b80eed39 14747 && howto->pc_relative)
5bd4f169
AM		 14748 {
14749 /* Assume this is a call protected by other code that
14750 detects the symbol is undefined. If this is the case,
14751 we can safely ignore the overflow. If not, the
14752 program is hosed anyway, and a little warning isn't
14753 going to help. */
14754
14755 continue;
14756 }
14757
ef60b7ff 14758 if (!((*info->callbacks->reloc_overflow)
bc30df16
AM		 14759 (info, &h->elf.root, sym_name,
14760 reloc_name, orig_rel.r_addend,
14761 input_bfd, input_section, rel->r_offset)))
b34976b6 14762 return FALSE;
ef60b7ff
AM		 14763 }
14764 else
14765 {
25f53a85 14766 info->callbacks->einfo
bc30df16 14767 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14768 input_bfd, input_section, rel->r_offset,
bc30df16 14769 reloc_name, sym_name, (int) r);
b34976b6 14770 ret = FALSE;
ef60b7ff 14771 }
bc30df16
AM		 14772 if (more_info != NULL)
14773 free (more_info);
5bd4f169 14774 }
5bd4f169
AM		 14775 }
14776
645ea6a9
AM		 14777 /* If we're emitting relocations, then shortly after this function
14778 returns, reloc offsets and addends for this section will be
14779 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14780 file rather than the input. Save a copy of the relocs for
14781 opd_entry_value. */
4cc603a5 14782 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 14783 {
14784 bfd_size_type amt;
14785 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14786 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14787 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14788 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14789 if (rel == NULL)
14790 return FALSE;
14791 memcpy (rel, relocs, amt);
14792 }
5bd4f169
AM		 14793 return ret;
14794}
14795
754021d0
AM		 14796/* Adjust the value of any local symbols in opd sections. */
14797
6e0b88f1 14798static int
754021d0
AM		 14799ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14800 const char *name ATTRIBUTE_UNUSED,
14801 Elf_Internal_Sym *elfsym,
14802 asection *input_sec,
14803 struct elf_link_hash_entry *h)
14804{
74f0fb50
AM		 14805 struct _opd_sec_data *opd;
14806 long adjust;
754021d0
AM		 14807 bfd_vma value;
14808
4025353c 14809 if (h != NULL)
6e0b88f1 14810 return 1;
4025353c 14811
74f0fb50
AM		 14812 opd = get_opd_info (input_sec);
14813 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14814 return 1;
754021d0
AM		 14815
14816 value = elfsym->st_value - input_sec->output_offset;
14817 if (!info->relocatable)
14818 value -= input_sec->output_section->vma;
14819
74f0fb50 14820 adjust = opd->adjust[value / 8];
4025353c 14821 if (adjust == -1)
6e0b88f1
AM		 14822 return 2;
14823
14824 elfsym->st_value += adjust;
14825 return 1;
754021d0
AM		 14826}
14827
5bd4f169
AM		 14828/* Finish up dynamic symbol handling. We set the contents of various
14829 dynamic sections here. */
14830
b34976b6 14831static bfd_boolean
4ce794b7
AM		 14832ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14833 struct bfd_link_info *info,
14834 struct elf_link_hash_entry *h,
ab6dce23 14835 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14836{
65f38f15 14837 struct ppc_link_hash_table *htab;
8387904d
AM		 14838 struct plt_entry *ent;
14839 Elf_Internal_Rela rela;
14840 bfd_byte *loc;
5bd4f169 14841
65f38f15 14842 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14843 if (htab == NULL)
14844 return FALSE;
5bd4f169 14845
8387904d
AM		 14846 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14847 if (ent->plt.offset != (bfd_vma) -1)
14848 {
14849 /* This symbol has an entry in the procedure linkage
14850 table. Set it up. */
e054468f
AM		 14851 if (!htab->elf.dynamic_sections_created
14852 || h->dynindx == -1)
14853 {
14854 BFD_ASSERT (h->type == STT_GNU_IFUNC
14855 && h->def_regular
14856 && (h->root.type == bfd_link_hash_defined
14857 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14858 rela.r_offset = (htab->elf.iplt->output_section->vma
14859 + htab->elf.iplt->output_offset
25f23106 14860 + ent->plt.offset);
ee67d69a
AM		 14861 if (htab->opd_abi)
14862 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14863 else
14864 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14865 rela.r_addend = (h->root.u.def.value
14866 + h->root.u.def.section->output_offset
14867 + h->root.u.def.section->output_section->vma
14868 + ent->addend);
33e44f2e
AM		 14869 loc = (htab->elf.irelplt->contents
14870 + (htab->elf.irelplt->reloc_count++
25f23106 14871 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14872 }
14873 else
14874 {
33e44f2e
AM		 14875 rela.r_offset = (htab->elf.splt->output_section->vma
14876 + htab->elf.splt->output_offset
25f23106 14877 + ent->plt.offset);
e054468f
AM		 14878 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14879 rela.r_addend = ent->addend;
33e44f2e 14880 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14881 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14882 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14883 }
8387904d 14884 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14885
14886 if (!htab->opd_abi)
14887 {
14888 if (!h->def_regular)
14889 {
14890 /* Mark the symbol as undefined, rather than as
14891 defined in glink. Leave the value if there were
14892 any relocations where pointer equality matters
14893 (this is a clue for the dynamic linker, to make
14894 function pointer comparisons work between an
14895 application and shared library), otherwise set it
14896 to zero. */
14897 sym->st_shndx = SHN_UNDEF;
14898 if (!h->pointer_equality_needed)
14899 sym->st_value = 0;
14900 else if (!h->ref_regular_nonweak)
14901 {
14902 /* This breaks function pointer comparisons, but
14903 that is better than breaking tests for a NULL
14904 function pointer. */
14905 sym->st_value = 0;
14906 }
14907 }
14908 }
8387904d 14909 }
5bd4f169 14910
f5385ebf 14911 if (h->needs_copy)
5bd4f169 14912 {
65f38f15 14913 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 14914
65f38f15
AM		 14915 if (h->dynindx == -1
14916 || (h->root.type != bfd_link_hash_defined
14917 && h->root.type != bfd_link_hash_defweak)
4ce794b7 14918 || htab->relbss == NULL)
65f38f15 14919 abort ();
5bd4f169
AM		 14920
14921 rela.r_offset = (h->root.u.def.value
14922 + h->root.u.def.section->output_section->vma
14923 + h->root.u.def.section->output_offset);
14924 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14925 rela.r_addend = 0;
4ce794b7
AM		 14926 loc = htab->relbss->contents;
14927 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 14928 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 14929 }
14930
b34976b6 14931 return TRUE;
5bd4f169
AM		 14932}
14933
65f38f15
AM		 14934/* Used to decide how to sort relocs in an optimal manner for the
14935 dynamic linker, before writing them out. */
14936
14937static enum elf_reloc_type_class
7e612e98
AM		 14938ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14939 const asection *rel_sec,
14940 const Elf_Internal_Rela *rela)
65f38f15 14941{
04c9666a 14942 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 14943 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14944
33e44f2e 14945 if (rel_sec == htab->elf.irelplt)
7e612e98 14946 return reloc_class_ifunc;
a33d1f77 14947
4ce794b7 14948 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14949 switch (r_type)
65f38f15
AM		 14950 {
14951 case R_PPC64_RELATIVE:
14952 return reloc_class_relative;
14953 case R_PPC64_JMP_SLOT:
14954 return reloc_class_plt;
14955 case R_PPC64_COPY:
14956 return reloc_class_copy;
14957 default:
14958 return reloc_class_normal;
14959 }
14960}
14961
5bd4f169
AM		 14962/* Finish up the dynamic sections. */
14963
b34976b6 14964static bfd_boolean
4ce794b7
AM		 14965ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14966 struct bfd_link_info *info)
5bd4f169 14967{
65f38f15
AM		 14968 struct ppc_link_hash_table *htab;
14969 bfd *dynobj;
5bd4f169 14970 asection *sdyn;
5bd4f169 14971
65f38f15 14972 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14973 if (htab == NULL)
14974 return FALSE;
14975
65f38f15 14976 dynobj = htab->elf.dynobj;
3d4d4302 14977 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 14978
65f38f15 14979 if (htab->elf.dynamic_sections_created)
5bd4f169 14980 {
5bd4f169
AM		 14981 Elf64_External_Dyn *dyncon, *dynconend;
14982
33e44f2e 14983 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 14984 abort ();
5bd4f169
AM		 14985
14986 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 14987 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 14988 for (; dyncon < dynconend; dyncon++)
14989 {
14990 Elf_Internal_Dyn dyn;
19397422 14991 asection *s;
5bd4f169
AM		 14992
14993 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14994
14995 switch (dyn.d_tag)
14996 {
65f38f15
AM		 14997 default:
14998 continue;
5bd4f169 14999
5d1634d7 15000 case DT_PPC64_GLINK:
4ce794b7 15001 s = htab->glink;
6348e046 15002 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15003 /* We stupidly defined DT_PPC64_GLINK to be the start
15004 of glink rather than the first entry point, which is
15005 what ld.so needs, and now have a bigger stub to
15006 support automatic multiple TOCs. */
b9e5796b 15007 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15008 break;
15009
19397422
AM		 15010 case DT_PPC64_OPD:
15011 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15012 if (s == NULL)
15013 continue;
15014 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15015 break;
15016
e8910a83
AM		 15017 case DT_PPC64_OPT:
15018 if (htab->do_multi_toc && htab->multi_toc_needed)
15019 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15020 break;
15021
19397422
AM		 15022 case DT_PPC64_OPDSZ:
15023 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15024 if (s == NULL)
15025 continue;
eea6121a 15026 dyn.d_un.d_val = s->size;
19397422
AM		 15027 break;
15028
65f38f15 15029 case DT_PLTGOT:
33e44f2e 15030 s = htab->elf.splt;
6348e046 15031 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15032 break;
15033
15034 case DT_JMPREL:
33e44f2e 15035 s = htab->elf.srelplt;
6348e046 15036 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15037 break;
5bd4f169 15038
65f38f15 15039 case DT_PLTRELSZ:
33e44f2e 15040 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15041 break;
15042
15043 case DT_RELASZ:
15044 /* Don't count procedure linkage table relocs in the
15045 overall reloc count. */
33e44f2e 15046 s = htab->elf.srelplt;
6348e046
AM		 15047 if (s == NULL)
15048 continue;
eea6121a 15049 dyn.d_un.d_val -= s->size;
6348e046
AM		 15050 break;
15051
15052 case DT_RELA:
15053 /* We may not be using the standard ELF linker script.
15054 If .rela.plt is the first .rela section, we adjust
15055 DT_RELA to not include it. */
33e44f2e 15056 s = htab->elf.srelplt;
6348e046
AM		 15057 if (s == NULL)
15058 continue;
15059 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15060 continue;
eea6121a 15061 dyn.d_un.d_ptr += s->size;
65f38f15 15062 break;
5bd4f169 15063 }
5bd4f169 15064
65f38f15 15065 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15066 }
5bd4f169
AM		 15067 }
15068
33e44f2e 15069 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15070 {
15071 /* Fill in the first entry in the global offset table.
15072 We use it to hold the link-time TOCbase. */
15073 bfd_put_64 (output_bfd,
60ee0d4a 15074 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15075 htab->elf.sgot->contents);
5d1634d7
AM		 15076
15077 /* Set .got entry size. */
33e44f2e 15078 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15079 }
15080
33e44f2e 15081 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15082 {
15083 /* Set .plt entry size. */
33e44f2e 15084 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15085 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15086 }
15087
84f5d08e
AM		 15088 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15089 brlt ourselves if emitrelocations. */
15090 if (htab->brlt != NULL
15091 && htab->brlt->reloc_count != 0
15092 && !_bfd_elf_link_output_relocs (output_bfd,
15093 htab->brlt,
d4730f92 15094 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15095 elf_section_data (htab->brlt)->relocs,
15096 NULL))
15097 return FALSE;
15098
176a0d42
AM		 15099 if (htab->glink != NULL
15100 && htab->glink->reloc_count != 0
15101 && !_bfd_elf_link_output_relocs (output_bfd,
15102 htab->glink,
d4730f92 15103 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15104 elf_section_data (htab->glink)->relocs,
15105 NULL))
15106 return FALSE;
15107
58d180e8 15108 if (htab->glink_eh_frame != NULL
da44f4e5
AM		 15109 && htab->glink_eh_frame->size != 0)
15110 {
15111 bfd_vma val;
15112 bfd_byte *p;
15113 asection *stub_sec;
15114
15115 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15116 for (stub_sec = htab->params->stub_bfd->sections;
15117 stub_sec != NULL;
15118 stub_sec = stub_sec->next)
15119 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15120 {
15121 /* FDE length. */
15122 p += 4;
15123 /* CIE pointer. */
15124 p += 4;
15125 /* Offset to stub section. */
15126 val = (stub_sec->output_section->vma
15127 + stub_sec->output_offset);
15128 val -= (htab->glink_eh_frame->output_section->vma
15129 + htab->glink_eh_frame->output_offset
15130 + (p - htab->glink_eh_frame->contents));
15131 if (val + 0x80000000 > 0xffffffff)
15132 {
15133 info->callbacks->einfo
15134 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15135 stub_sec->name);
15136 return FALSE;
15137 }
15138 bfd_put_32 (dynobj, val, p);
15139 p += 4;
15140 /* stub section size. */
15141 p += 4;
15142 /* Augmentation. */
15143 p += 1;
15144 /* Pad. */
15145 p += 7;
15146 }
15147 if (htab->glink != NULL && htab->glink->size != 0)
15148 {
15149 /* FDE length. */
15150 p += 4;
15151 /* CIE pointer. */
15152 p += 4;
15153 /* Offset to .glink. */
15154 val = (htab->glink->output_section->vma
15155 + htab->glink->output_offset
15156 + 8);
15157 val -= (htab->glink_eh_frame->output_section->vma
15158 + htab->glink_eh_frame->output_offset
15159 + (p - htab->glink_eh_frame->contents));
15160 if (val + 0x80000000 > 0xffffffff)
15161 {
15162 info->callbacks->einfo
15163 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15164 htab->glink->name);
15165 return FALSE;
15166 }
15167 bfd_put_32 (dynobj, val, p);
15168 p += 4;
15169 /* .glink size. */
15170 p += 4;
15171 /* Augmentation. */
15172 p += 1;
15173 /* Ops. */
15174 p += 7;
15175 }
15176
15177 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15178 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15179 htab->glink_eh_frame,
15180 htab->glink_eh_frame->contents))
15181 return FALSE;
15182 }
58d180e8 15183
e717da7e 15184 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15185 since we didn't add them to DYNOBJ. We know dynobj is the first
15186 bfd. */
c72f2fb2 15187 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15188 {
15189 asection *s;
7b53ace3 15190
0c8d6e5c 15191 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15192 continue;
15193
e717da7e
AM		 15194 s = ppc64_elf_tdata (dynobj)->got;
15195 if (s != NULL
eea6121a 15196 && s->size != 0
e717da7e
AM		 15197 && s->output_section != bfd_abs_section_ptr
15198 && !bfd_set_section_contents (output_bfd, s->output_section,
15199 s->contents, s->output_offset,
eea6121a 15200 s->size))
e717da7e
AM		 15201 return FALSE;
15202 s = ppc64_elf_tdata (dynobj)->relgot;
15203 if (s != NULL
eea6121a 15204 && s->size != 0
e717da7e
AM		 15205 && s->output_section != bfd_abs_section_ptr
15206 && !bfd_set_section_contents (output_bfd, s->output_section,
15207 s->contents, s->output_offset,
eea6121a 15208 s->size))
e717da7e
AM		 15209 return FALSE;
15210 }
f6c52c13 15211
b34976b6 15212 return TRUE;
5bd4f169
AM		 15213}
15214
5bd4f169 15215#include "elf64-target.h"
7b8e7dad
AM		 15216
15217/* FreeBSD support */
15218
15219#undef TARGET_LITTLE_SYM
15220#undef TARGET_LITTLE_NAME
15221
15222#undef TARGET_BIG_SYM
6d00b590 15223#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15224#undef TARGET_BIG_NAME
15225#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15226
15227#undef ELF_OSABI
15228#define ELF_OSABI ELFOSABI_FREEBSD
15229
15230#undef elf64_bed
15231#define elf64_bed elf64_powerpc_fbsd_bed
15232
15233#include "elf64-target.h"
15234
GDB Binutils - Deliverables
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